Motor vehicle brake fluid filling and venting structure

Abstract

The utility model relates to a kind of motor vehicle brake fluid oiling exhaust structure, including brake caliper assembly connected with brake cylinder pipeline, the brake caliper assembly includes the oil drain nozzle connected with piston cylinder, its innovation point is at:Still include metal probe and suction hose, the metal probe is arranged in suction hose, and suction hose is assembled with oil drain nozzle connection, the tail of the metal probe is equipped with exhaust hole, and metal probe inserts the inside of oil drain nozzle, through the oil injection hole of brake cylinder, brake fluid is added to it, simultaneously, suction is carried out from the suction hose, negative pressure is formed in pipeline to speed up injection speed, after injection is completed, oil drain nozzle is tightened, suction hose is pulled down, under the action of metal probe, reduce residual liquid overflow along the thread gap of oil drain nozzle, and metal probe is removed to complete injection.

Description

Technical Field

[0001] This utility model relates to a refueling and venting structure, specifically a motor vehicle brake fluid refueling and venting structure for use on motorcycles. Background Technology

[0002] Currently, motorcycles use a top-fill, bottom-extraction braking process. Brake fluid is poured into the filler hole of the brake cylinder, and then air is drawn from the bleed valve of the brake caliper assembly, creating negative pressure in the brake lines and increasing the filling speed. When the filling is complete, the air hose is pulled out, and because the external air pressure is greater than the internal pressure of the brake caliper assembly, residual fluid is squeezed out. Simultaneously, under gravity, the residual fluid overflows from the piston cylinder end face of the brake caliper assembly along the threaded gap of the bleed valve. To ensure product quality, further investigation into the cause of the residual fluid overflow requires engineers to spend time checking whether it's a quality issue with the brake components themselves or due to overfilling. This makes the entire brake fluid filling process too time-consuming and inefficient. Utility Model Content

[0003] The purpose of this utility model is to provide a motor vehicle brake fluid filling and venting structure that is not only simple and reliable in structure, but also reduces the time for confirming and repairing defects caused by excessive residual fluid, improves quality, reduces on-site residual fluid cleaning procedures, and lowers labor costs.

[0004] To achieve the above objectives, the technical solution of this utility model is: a brake fluid filling and venting structure for motor vehicles, including a brake caliper assembly connected to the brake cylinder pipeline, the brake caliper assembly including a bleed nozzle connected to the piston cylinder, the bleed nozzle being located below the brake cylinder and used to vent air from the brake pipeline. Its innovation lies in:

[0005] It also includes a metal probe and a suction hose. The metal probe is disposed inside the suction hose, which is connected to the vent nozzle. The tail of the metal probe has a vent hole, and the metal probe is inserted into the vent nozzle.

[0006] Unscrew the bleed nozzle and add brake fluid through the filler hole of the brake cylinder. The fluid then flows into the brake caliper assembly through the pipeline. Simultaneously, evacuate air from the evacuation hose to create negative pressure in the pipeline, accelerating the fluid injection speed. After fluid injection is complete, tighten the bleed nozzle, disconnect the evacuation hose, and use a metal probe to reduce residual fluid overflow along the threaded gap of the bleed nozzle. Remove the metal probe to complete the fluid injection process.

[0007] In the above technical solution, the metal probe includes a needle tube and a needle tip that are connected as one piece and communicate with each other. The needle tube is inserted into the oil drain nozzle, the outer wall of the needle tip is fitted and connected to the inner wall of the suction hose, and the needle tip is provided with an exhaust hole.

[0008] In the above technical solution, the drain nozzle includes a valve body and a valve core disposed in the valve body. The external thread of the valve body is connected to the internal thread hole of the piston cylinder. The metal probe is inserted into the valve core, and the suction hose is inserted into the step of the valve body.

[0009] In the above technical solution, the piston cylinder has a connector that communicates with the body, and the external thread of the drain nozzle is connected to the internal thread hole of the connector.

[0010] The positive effects of this utility model are as follows: After adopting the motor vehicle brake fluid filling and venting structure of this utility model, since it also includes a metal probe and a suction hose, the metal probe is disposed inside the suction hose, and the suction hose is assembled and connected to the bleed nozzle. The tail of the metal probe has a vent hole, and the metal probe is inserted into the interior of the bleed nozzle.

[0011] To remove residual oil from the bottom of the bleed nozzle and the brake caliper assembly cavity, this invention adds a metal probe inside the suction hose, which is inserted to the bottom of the bleed nozzle to reduce residual oil. Secondly, to ensure filling speed, the metal probe has a vent at its tail to ensure efficient suction. Specifically…

[0012] Unscrew the bleed valve and add brake fluid through the filler hole of the brake cylinder, allowing it to flow into the brake caliper assembly via the pipeline. Simultaneously, evacuate air from the evacuation hose to create negative pressure within the pipeline, accelerating the fluid injection process. After injection, tighten the bleed valve and disconnect the evacuation hose. With the aid of a metal probe, ensure the residual fluid level is below the mating surface between the bleed valve and the piston cylinder, minimizing leakage along the threaded gap of the bleed valve. Lift the evacuation hose upwards until it no longer contacts the bleed valve. After 5 seconds, remove the metal probe to complete the fluid injection process.

[0013] Therefore, the advantages of this utility model are: First, it is not only simple and reliable in structure, but also easy to implement in production; second, it can reduce the time for confirmation and rework of defective products caused by excessive residual oil, which greatly improves the quality of the product; third, it can reduce the on-site residual oil cleaning process, reduce labor costs, and greatly improve the efficiency of the oiling process. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of the metal probe of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the oil drain nozzle of this utility model;

[0017] Figure 4 This is a schematic diagram illustrating the overflow caused by excessive residual oil in existing technologies. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and the given embodiments, but it is not limited thereto.

[0019] like Figure 1 , 2 As shown in Figure 3, a motor vehicle brake fluid filling and venting structure includes a brake caliper assembly connected to the brake cylinder pipeline. The brake caliper assembly includes a bleed nozzle 2 connected to a piston cylinder 1. The bleed nozzle 2 is located below the brake cylinder and is used to vent air from the brake pipeline.

[0020] It also includes a metal probe 3 and a suction hose 4. The metal probe 3 is disposed inside the suction hose 4, and the suction hose 4 is assembled and connected to the drain nozzle 2. The tail of the metal probe 3 is provided with a vent hole 31, and the metal probe 3 is inserted into the interior of the drain nozzle 2.

[0021] Unscrew the drain plug 2 and add brake fluid through the filler hole of the brake cylinder. The fluid then flows into the brake caliper assembly through the pipeline. At the same time, evacuate air from the evacuation hose 4 to create negative pressure in the pipeline, which will accelerate the fluid injection. After the fluid injection is complete, tighten the drain plug 2 and disconnect the evacuation hose 4. With the help of the metal probe 3, reduce the leakage of residual fluid along the thread gap of the drain plug 2. Remove the metal probe 3 to complete the fluid injection.

[0022] Furthermore, such as Figure 2 As shown, in order to simultaneously evacuate air and ensure filling efficiency, the metal probe 3 includes a needle tube 32 and a needle tip 33 that are connected as one piece and communicate with each other. The needle tube 32 is inserted into the drain nozzle 2, and the outer wall of the needle tip 33 is fitted and connected to the inner wall of the evacuation hose 4. The needle tip 33 is provided with an exhaust hole 31.

[0023] Furthermore, such as Figure 1 , 3 As shown, in order to make the structure more reasonable and complete the quick assembly, the drain nozzle 2 includes a valve body 21 and a valve core 22 provided in the valve body 21. The external thread of the valve body 21 is connected to the internal thread hole of the piston cylinder 1. The metal probe 3 is inserted into the valve core 22. The suction hose 4 is inserted into the step of the valve body 21.

[0024] Furthermore, such as Figure 1 As shown, in order to enable the piston cylinder and the drain nozzle to be connected efficiently, the piston cylinder 1 has a connector 11 that communicates with the body, and the external thread of the drain nozzle 2 is connected to the internal thread hole of the connector 11.

[0025] To address the problem in existing technologies where residual fluid overflows from the piston cylinder end face of the brake caliper assembly along the thread clearance of the bleed nozzle under gravity (see...) Figure 4In order to remove residual oil from the bottom of the drain plug and the brake caliper assembly cavity, this utility model adds a metal probe 3 inside the suction hose, which is inserted into the bottom of the drain plug 2 to reduce residual oil at the bottom. Secondly, to ensure the filling speed, the metal probe 3 has a vent hole 31 at its tail to ensure the efficiency of air extraction. The specific oil filling process is as follows:

[0026] Unscrew the bleed nozzle 2 and add brake fluid through the filler hole of the brake cylinder. The fluid then flows into the brake caliper assembly through the pipeline. Simultaneously, evacuate air from the evacuation hose 4 to create negative pressure in the pipeline, accelerating the fluid injection speed. After fluid injection is complete, tighten the bleed nozzle 2 and disconnect the evacuation hose. Under the action of the metal probe 3, the residual fluid is kept below the mating surface between the bleed nozzle and the piston cylinder, reducing the leakage of residual fluid along the thread gap of the bleed nozzle. Lift the evacuation hose upwards until it no longer contacts the bleed nozzle. After 5 seconds, remove the metal probe to complete the fluid injection.

[0027] Therefore, the advantages of this utility model are: First, it is not only simple and reliable in structure, but also easy to implement in production; second, it can reduce the time for confirmation and rework of defective products caused by excessive residual oil, which greatly improves the quality of the product; third, it can reduce the on-site residual oil cleaning process, reduce labor costs, and greatly improve the efficiency of the oiling process.

[0028] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A brake fluid filling and venting structure for motor vehicles, comprising a brake caliper assembly connected to a brake cylinder pipeline, the brake caliper assembly including a vent nozzle (2) connected to a piston cylinder (1), the vent nozzle (2) being located below the brake cylinder for venting air from the brake pipeline, characterized in that: It also includes a metal probe (3) and a suction hose (4). The metal probe (3) is disposed inside the suction hose (4), and the suction hose (4) is assembled and connected to the drain nozzle (2). The tail of the metal probe (3) is provided with a vent hole (31), and the metal probe (3) is inserted into the interior of the drain nozzle (2). Unscrew the drain plug (2), add brake fluid through the oil filling hole of the brake cylinder, and let it flow into the brake caliper assembly through the pipeline. At the same time, evacuate air from the air suction hose (4) to create negative pressure in the pipeline to speed up the fluid injection. After the fluid injection is completed, tighten the drain plug (2), pull out the air suction hose (4), and reduce the leakage of residual fluid along the thread gap of the drain plug (2) under the action of the metal probe (3). Remove the metal probe (3) to complete the fluid injection.

2. The motor vehicle brake fluid filling and venting structure according to claim 1, characterized in that: The metal probe (3) includes a needle tube (32) and a needle tip (33) that are connected as one unit and communicate with each other. The needle tube (32) is inserted into the drain nozzle (2). The outer wall of the needle tip (33) is in close contact with the inner wall of the suction hose (4), and the needle tip (33) is provided with an exhaust hole (31).

3. The motor vehicle brake fluid filling and venting structure according to claim 1, characterized in that: The drain nozzle (2) includes a valve body (21) and a valve core (22) disposed in the valve body (21). The external thread of the valve body (21) is connected to the internal thread hole of the piston cylinder (1). The metal probe (3) is inserted into the valve core (22). The suction hose (4) is inserted at the step of the valve body (21).

4. The motor vehicle brake fluid filling and venting structure according to claim 1, characterized in that: The piston cylinder (1) has a connector (11) that communicates with the body, and the external thread of the drain nozzle (2) is connected to the internal thread hole of the connector (11).

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