Leakage-proof sealing structure of automobile brake pipe

Abstract

The utility model discloses an automobile brake pipe leakproof sealing structure which comprises a sealing connecting pipe, internal threads are arranged in the sealing connecting pipe, a sealing ring is arranged in the middle of the sealing connecting pipe, brake pipe main pipes are arranged at the two ends of the sealing connecting pipe, each brake pipe main pipe is composed of a metal pipe and a reinforcing pipe, and the reinforcing pipes are welded to one ends of the metal pipes. The other end of the reinforcing pipe is in threaded connection with the sealing connecting pipe; an annular bulge is arranged at the welding part between the metal pipe and the reinforcing pipe; the annular protrusions on the two sides are sleeved with limiting assemblies, each limiting assembly comprises a first limiting ring and a second limiting ring, the two ends of the sealing connecting pipe are fixedly connected with limiting rods, the other ends of the limiting rods on the two sides are slidably connected with the first limiting ring and the second limiting ring respectively, and the limiting rods located on the outer sides of the first limiting ring and the second limiting ring are in threaded connection with nuts. By means of the structure, when the brake pipe is used, the sealing performance and stability of the brake pipe can be improved, and meanwhile the situation that vibration is generated in the vehicle running process and consequently the connecting position is loosened is avoided.

Description

Technical Field

[0001] This utility model relates to the field of automotive brake pipe technology, and in particular to an anti-leakage sealing structure for automotive brake pipes. Background Technology

[0002] The automotive braking system is one of the key systems to ensure driving safety, and the brake pipe, as an important component in the braking system that transmits brake hydraulic or air pressure, has a sealing performance that directly affects the reliability and safety of the braking system.

[0003] Automotive brake lines are mostly long, one-piece metal tubes with bent sections at both ends for connecting the pump body and brake calipers. However, during long-term use of automobiles, the traditional brake line sealing structure often has some shortcomings:

[0004] 1. Due to factors such as vibration and temperature changes, the seals are prone to aging and deformation, which can lead to leakage problems, affect braking performance, and even cause safety accidents. At the same time, after the seals have aged, they are not easy to replace and maintain.

[0005] 2. Traditional brake pipes are designed as a single unit. If the brake pipe is corroded or damaged during routine maintenance, the entire brake pipe needs to be replaced, resulting in high maintenance costs. Utility Model Content

[0006] The purpose of this invention is to provide a leak-proof sealing structure for automotive brake pipes, which solves the problems mentioned above.

[0007] To achieve the above objectives, a leak-proof sealing structure for automotive brake pipes is provided, including a sealing connecting pipe with an internal thread and a sealing ring in the middle. Both ends of the sealing connecting pipe are provided with brake pipe mains, which are composed of a metal pipe and a reinforcing pipe. The reinforcing pipe is welded to one end of the metal pipe, and the other end of the reinforcing pipe is threaded to the sealing connecting pipe. An annular protrusion is provided at the weld between the metal pipe and the reinforcing pipe.

[0008] Limiting components are fitted onto the annular protrusions on both sides. The limiting components include a first limiting ring and a second limiting ring. Limiting rods are fixedly connected to both ends of the sealing connecting pipe. The other ends of the limiting rods on both sides are slidably connected to the first limiting ring and the second limiting ring, respectively. Nuts are threaded onto the limiting rods located outside the first limiting ring and the second limiting ring.

[0009] According to the aforementioned automotive brake pipe anti-leakage sealing structure, the sealing connecting pipe is cylindrical or L-shaped, and the L-shaped sealing connecting pipe is provided with a fixing ring inside, with the internal thread and sealing ring of the L-shaped sealing connecting pipe located outside the fixing ring.

[0010] According to the aforementioned automotive brake pipe anti-leakage sealing structure, the outer side of the reinforcing pipe is provided with an external thread that is compatible with the internal thread.

[0011] According to the aforementioned automotive brake pipe anti-leakage sealing structure, a connecting rod is fixedly connected to the outside of the sealing connecting pipe, and the connecting rod is used to connect the sealing connecting pipes on both sides.

[0012] This utility model has the following beneficial effects:

[0013] 1. Compared with the existing technology, the metal tube is connected by a sealing connecting tube and a limiting component, so that the reinforcing tubes on both sides are threaded onto the sealing connecting tube. At this time, the inner ends of the reinforcing tubes on both sides are located on both sides of the sealing ring, which improves the sealing performance of the brake tube connection. Then, the first limiting ring and the second limiting ring are sleeved on the metal tube and fixed by the limiting rod and nut, which further improves the stability of the brake tube and avoids vibration during vehicle operation that could cause the connection to loosen.

[0014] 2. Compared with existing technologies, by connecting the reinforcing tube and the sealing connection tube by thread, if the metal tube corrodes after long-term use and requires maintenance, the corroded part of the metal tube can be directly removed from the sealing connection tube and replaced, avoiding the need to replace the entire brake tube.

[0015] 3. Compared with existing technologies, since the sealing connection pipe is available in either a straight cylindrical or L-shaped form, it can be used for both straight and bent sections during installation, offering good applicability and flexibility. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a structural diagram of a leak-proof sealing structure for automotive brake pipes according to this utility model;

[0018] Figure 2 This is a partial structural diagram of a leak-proof sealing structure for automotive brake pipes according to this utility model;

[0019] Figure 3 This is a structural diagram of the limiting component of an anti-leakage sealing structure for automotive brake pipes according to this utility model;

[0020] Figure 4 This is a cross-sectional view of the sealing connection pipe of the leak-proof sealing structure for automotive brake pipes according to this utility model;

[0021] Figure 5 This is another structural diagram of the leak-proof sealing structure for automotive brake pipes according to this utility model;

[0022] Figure 6 This is a cross-sectional view of another sealing connection pipe of the leak-proof sealing structure for automotive brake pipes according to this utility model.

[0023] Legend:

[0024] 1. Sealing connecting pipe; 2. Brake pipe main pipe; 21. Metal pipe; 22. Reinforcing pipe; 23. Annular protrusion; 3. Limiting assembly; 31. First limiting ring; 32. Second limiting ring; 33. Limiting rod; 34. Nut; 4. Connecting rod; 5. Internal thread; 6. Sealing ring; 7. Fixing ring. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-6 This utility model provides a leak-proof sealing structure for automotive brake pipes, comprising a sealing connecting pipe 1, with a connecting rod 4 fixedly connected to the outside of the sealing connecting pipe 1. The connecting rod 4 is used to connect the two sealing connecting pipes 1. Brake pipes are usually used in pairs. The sealing connecting pipe 1 has an internal thread 5 and a sealing ring 6 in the middle. The sealing ring 6 is made of rubber. Under the action of the sealing ring 6, the sealing performance of the brake pipe connection is improved. The sealing connecting pipe 1 is cylindrical or L-shaped. The L-shaped sealing connecting pipe 1 has a fixing ring 7 inside. The fixing ring 7 is the same size as the sealing ring 6. The internal thread 5 and the sealing ring 6 of the L-shaped sealing connecting pipe 1 are both located outside the fixing ring 7. Under the action of the L-shaped sealing connecting pipe 1, the bent part of the brake pipe can be connected, which is flexible.

[0027] Both ends of the sealing connection pipe 1 are equipped with brake pipe main pipe 2. The brake pipe main pipe 2 consists of a metal pipe 21 and a reinforcing pipe 22. The reinforcing pipe 22 is welded to one end of the metal pipe 21, and the other end of the reinforcing pipe 22 is threaded to the sealing connection pipe 1. The outer side of the reinforcing pipe 22 is provided with an external thread that matches the internal thread 5. The weld between the metal pipe 21 and the reinforcing pipe 22 is provided with an annular protrusion 23. The outer diameter of the annular protrusion 23 is larger than the inner diameter of the first limiting ring 31 and the second limiting ring 32, and it has a limiting function. After long-term use, if the metal pipe 21 is corroded and needs maintenance, the corroded part of the metal pipe 21 can be directly removed from the sealing connection pipe 1 and replaced, avoiding the need to replace the entire brake pipe.

[0028] Limiting components 3 are fitted onto the annular protrusions 23 on both sides. The limiting components 3 include a first limiting ring 31 and a second limiting ring 32. The first limiting ring 31 and the second limiting ring 32 are the same size. Limiting rods 33 are fixedly connected to both ends of the sealing connecting pipe 1. The other ends of the limiting rods 33 on both sides are slidably connected to the first limiting ring 31 and the second limiting ring 32 respectively. Nuts 34 are threaded onto the limiting rods 33 located outside the first limiting ring 31 and the second limiting ring 32. Under the action of the nuts 34, the brake pipe main pipe 2 is further fixed to the sealing connecting pipe 1. Under the action of the limiting rings, the stability of the brake pipe is further improved, and vibration during vehicle operation is prevented from causing the connection to loosen.

[0029] Working principle: During installation, multiple brake pipe mains 2 are connected through a straight cylindrical sealing connecting pipe 1, so that the reinforcing pipes 22 on both sides are threaded onto the sealing connecting pipe 1. At this time, the inner ends of the reinforcing pipes 22 on both sides are located on both sides of the sealing ring 6, which improves the sealing performance of the brake pipe connection. Then, the first limiting ring 31 and the second limiting ring 32 are sleeved on the metal pipe 21 and fixed by the limiting rod 33 and the nut 34, which further improves the stability of the brake pipe.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A leak-proof sealing structure for automotive brake pipes, characterized in that, Includes a sealing connecting pipe (1), which has an internal thread (5) and a sealing ring (6) in the middle. Both ends of the sealing connecting pipe (1) are provided with brake pipe main pipes (2). The brake pipe main pipe (2) is composed of a metal pipe (21) and a reinforcing pipe (22). The reinforcing pipe (22) is welded to one end of the metal pipe (21), and the other end of the reinforcing pipe (22) is threaded to the sealing connecting pipe (1). An annular protrusion (23) is provided at the weld between the metal pipe (21) and the reinforcing pipe (22). Limiting components (3) are fitted onto the annular protrusions (23) on both sides. The limiting components (3) include a first limiting ring (31) and a second limiting ring (32). Both ends of the sealing connecting pipe (1) are fixedly connected to limiting rods (33). The other ends of the limiting rods (33) on both sides are slidably connected to the first limiting ring (31) and the second limiting ring (32). Nuts (34) are threaded onto the limiting rods (33) located outside the first limiting ring (31) and the second limiting ring (32).

2. The leak-proof sealing structure for automotive brake pipes according to claim 1, characterized in that, The sealing connection pipe (1) is cylindrical or L-shaped. The L-shaped sealing connection pipe (1) is provided with a fixing ring (7). The internal thread (5) and sealing ring (6) of the L-shaped sealing connection pipe (1) are located outside the fixing ring (7).

3. The leak-proof sealing structure for automotive brake pipes according to claim 2, characterized in that, The outer side of the reinforcing tube (22) is provided with an external thread that is compatible with the internal thread (5).

4. The leak-proof sealing structure for automotive brake pipes according to claim 3, characterized in that, A connecting rod (4) is fixedly connected to the outside of the sealing connecting pipe (1), and the connecting rod (4) is used to connect the sealing connecting pipes (1) on both sides.

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