Air brake pipeline quick connector self-sealing dustproof structure

Abstract

The utility model provides a kind of air brake pipeline quick plug connector self-sealing dustproof structure, it is related to the field of automobile condensing pipeline, including sleeve mechanism, the right side fixedly connected with threaded joint A of sleeve mechanism, the outside of threaded joint A is screwed and connected with connecting nut A, solve the many problems that still exist in the actual use process of current air brake pipeline quick plug connector, in sealing performance aspect, the sealing structure design of traditional quick plug connector is often relatively simple, most only rely on single sealing ring to realize sealing, when pipeline is connected with connector, the compression of sealing structure is smaller, if compression is insufficient, it will lead to gap between connector and pipeline, air leakage phenomenon problem is prone to occur, through multiple sealing mechanism, the problem of insufficient sealing performance is solved, elastic embedding of plug block assembly and limit clamping groove, magnetic attraction plug block and limit slot magnetic attraction sealing, again cooperation limit clamping block and the mechanical locking of clamping groove assembly, form multidimensional sealing system.

Description

Technical Field

[0001] This utility model belongs to the field of automotive condenser pipes, and specifically relates to a self-sealing dustproof structure for a quick-connect fitting of an air brake pipe. Background Technology

[0002] Currently, with the rapid development of the automotive industry, vehicle safety and reliability have become a core focus of industry attention. As a crucial component of vehicle braking, the stability of the air braking system directly affects vehicle driving safety. In air braking systems, the efficiency and quality of pipeline connections are paramount. Quick-connect couplings, due to their ease of operation and significantly improved assembly efficiency, are widely used in air braking pipeline connections.

[0003] However, existing quick-connect fittings for air brake lines still have many problems that need to be solved in actual use. In terms of sealing performance, the sealing structure design of traditional quick-connect fittings is often relatively simple, mostly relying on a single sealing ring to achieve sealing. When the pipeline is connected to the fitting, the compression of the sealing structure is small. If the compression is insufficient, gaps will appear between the fitting and the pipeline, which can easily lead to air leakage. Once the air brake system leaks, it will directly affect the stability of the braking pressure, thereby reducing the braking effect. In severe cases, it may cause major safety accidents such as brake failure.

[0004] Therefore, considering the shortcomings of the above-mentioned solutions in actual production and implementation, modifications and improvements have been made. In the spirit of striving for excellence, and with the assistance of professional knowledge and experience, and after much ingenuity and experimentation, this utility model was created. It provides a self-sealing dustproof structure for quick-connect fittings in air brake systems, addressing many problems that still need to be solved in the actual use of existing quick-connect fittings. Regarding sealing performance, the sealing structure design of traditional quick-connect fittings is often relatively simple, mostly relying on a single sealing ring for sealing. When the pipeline is connected to the fitting, the compression of the sealing structure is small. If the compression is insufficient, gaps will appear between the fitting and the pipeline, easily leading to air leakage. Once the air brake system leaks, it will directly affect the stability of the braking pressure, thereby reducing the braking effect, and in severe cases, may cause major safety accidents such as brake failure. Utility Model Content

[0005] This utility model proposes a self-sealing dustproof structure for quick-connect fittings in air brake lines, which solves many problems that still need to be addressed in the actual use of existing quick-connect fittings in air brake lines. In terms of sealing performance, the sealing structure design of traditional quick-connect fittings is often relatively simple, mostly relying on a single sealing ring to achieve sealing. When the pipeline is connected to the fitting, the compression of the sealing structure is small. If the compression is insufficient, gaps will appear between the fitting and the pipeline, which can easily lead to air leakage. Once the air brake system leaks, it will directly affect the stability of the braking pressure, thereby reducing the braking effect. In severe cases, it may lead to major safety accidents such as brake failure.

[0006] The technical solution of this utility model is implemented as follows: a quick-connect fitting for air brake pipeline with self-sealing dustproof structure includes: a sleeve mechanism, a threaded joint A is fixedly connected to the right side of the sleeve mechanism, and a connecting nut A is screwed onto the outside of the threaded joint A. The outer circumferential surface of the sleeve mechanism is provided with a slot assembly. There are two slot assemblies, which are arranged opposite each other on the upper and lower sides of the outer circumferential surface of the sleeve mechanism. A limiting guide plate is fixedly connected to the outer circumferential surface of the sleeve mechanism. The limiting guide plate has a ring structure, and an annular groove is provided on the left side of the limiting guide plate. This annular groove is a limiting slot. A support guide ring is fixedly connected to the inner wall of the sleeve mechanism. In a preferred embodiment, the main body of the support guide ring is an annular structure, and the diameter of the support guide ring is smaller than the diameter of the sleeve mechanism. An annular groove is provided on the left end face of the support guide ring, and the annular groove is a limiting slot.

[0007] In a preferred embodiment, an inner tube mechanism is inserted inside the sleeve mechanism, and a threaded joint B is fixedly connected to the side of the inner tube mechanism away from the sleeve mechanism, and a connecting nut B is screwed onto the outside of the threaded joint B.

[0008] In a preferred embodiment, a baffle assembly is fixedly connected to the outer circumferential surface of the inner tube mechanism. The baffle assembly has a ring structure and is located on the left side of the limiting guide plate. A spring cover is fixedly connected to the right side of the baffle assembly.

[0009] In a preferred embodiment, a reset spring is installed inside the spring cover, and an insert assembly is fixedly connected to the side of the spring cover away from the baffle assembly. The insert assembly has a ring structure.

[0010] In a preferred embodiment, the insert assembly matches a limiting slot opened on the left side of the limiting guide plate, and the reset spring pushes the insert assembly toward one side of the limiting guide plate.

[0011] In a preferred embodiment, a magnetic plug is fixedly connected to the side of the inner tube mechanism near the sleeve mechanism. The magnetic plug is inserted into the limiting slot. Two support mechanisms are fixedly connected to each other on the inner wall of the inner tube mechanism. A spring assembly is fixedly connected to the inner side of the support mechanism. A limiting block is fixedly connected to the side of the spring assembly away from the support mechanism. The limiting block matches the slot assembly.

[0012] After using the above technical solution, the beneficial effects of this utility model are: 1. In this utility model, the problem of insufficient sealing performance is solved by multiple sealing mechanisms. The elastic fitting of the insert component and the limiting slot, the magnetic sealing of the magnetic insert and the limiting slot, and the mechanical locking of the limiting block and the slot component form a multi-dimensional sealing system, which greatly improves the compression stability of the sealing structure, effectively avoids air leakage caused by insufficient compression, ensures the pressure stability of the air braking system, and reduces the risk of brake failure.

[0013] 2. In this utility model, by using a reset spring inside the spring cover to continuously push the plug assembly to fit with the limiting slot, it can not only prevent external dust from entering the connector, but also offset the vibration and impact during vehicle operation through elastic force, thus avoiding loosening of the connection. Compared with the prior art, this structure does not rely on the aging performance of a single sealing ring. Through the synergistic effect of the mechanical structure and elastic components, the service life of the sealing and dustproof structure is extended, while improving the safety and reliability of the air brake pipeline connection. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 these drawings without creative effort.

[0015] Figure 1 This is a cross-sectional front view of the self-sealing dustproof device of this utility model. Figure 2 This is a schematic diagram of the right side view of the assembled self-sealing dustproof device of this utility model; Figure 3 This is a schematic diagram of the combined structure of the inner tube mechanism and threaded joint B of the self-sealing dustproof device of this utility model. Figure 4 This is a schematic diagram of the combined structure of the sleeve mechanism and threaded joint A of the self-sealing dustproof device of this utility model; Figure 5 This is a front view structural diagram of the self-sealing dustproof device of this utility model; Figure 6 This is a schematic diagram of the left side of the self-sealing dustproof device of this utility model; In the diagram, 1. Sleeve mechanism; 101. Threaded connector A; 1011. Connecting nut A; 1012. Slot assembly; 1013. Limiting guide plate; 1014. Limiting slot; 1015. Supporting guide ring; 1016. Limiting slot; 2. Inner tube mechanism; 201. Threaded connector B; 2011. Connecting nut B; 2012. Baffle assembly; 2013. Spring cover; 2014. Insertion block assembly; 2015. Magnetic insertion block; 3. Support mechanism; 301. Spring assembly; 3011. Limiting block. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1-6 As shown, a self-sealing dustproof structure for a quick-connect fitting of a pneumatic brake pipeline includes: a sleeve mechanism 1, a threaded connector A101 fixedly connected to the right side of the sleeve mechanism 1, and a connecting nut A1011 screwed onto the outside of the threaded connector A101. The outer peripheral surface of the sleeve mechanism 1 is provided with a slot assembly 1012. There are two slot assemblies 1012, which are arranged opposite each other on the upper and lower sides of the outer peripheral surface of the sleeve mechanism 1. A limiting guide plate 1013 is fixedly connected to the outer peripheral surface of the sleeve mechanism 1. The limiting guide plate 1013 has a ring structure, and an annular groove is provided on the left side of the limiting guide plate 1013. This annular groove is a limiting slot 1014. A support guide ring 1015 is fixedly connected to the inner wall of the sleeve mechanism 1.

[0018] The main body of the support guide ring 1015 is a ring structure, and the diameter of the support guide ring 1015 is smaller than the diameter of the sleeve mechanism 1. An annular groove is provided on the left end face of the support guide ring 1015. The annular groove is a limiting slot 1016. An inner tube mechanism 2 is inserted into the sleeve mechanism 1. A threaded joint B201 is fixedly connected to the side of the inner tube mechanism 2 away from the sleeve mechanism 1. A connecting nut B2011 is screwed onto the outside of the threaded joint B201.

[0019] Among them, a baffle assembly 2012 is fixedly connected to the outer peripheral surface of the inner tube mechanism 2. The baffle assembly 2012 has a ring structure and is located on the left side of the limiting guide plate 1013. A spring cover 2013 is fixedly connected to the right side of the baffle assembly 2012. A reset spring is installed inside the spring cover 2013. An insert block assembly 2014 is fixedly connected to the side of the spring cover 2013 away from the baffle assembly 2012. The insert block assembly 2014 has a ring structure.

[0020] Among them, the insert block assembly 2014 matches the limiting slot 1014 opened on the left side of the limiting guide plate 1013, and the reset spring pushes the insert block assembly 2014 to move towards one side of the limiting guide plate 1013. The inner tube mechanism 2 is also fixedly connected to the side near the sleeve mechanism 1. The magnetic insert block 2015 is inserted into the limiting slot 1016. Two support mechanisms 3 are fixedly connected to each other on the inner wall of the inner tube mechanism 2. The inner side of the support mechanism 3 is fixedly connected to the spring assembly 301. The side of the spring assembly 301 away from the support mechanism 3 is fixedly connected to the limiting slot 3011. The limiting slot 3011 matches the slot assembly 1012.

[0021] In use, the inner tube mechanism 2 is first inserted into the sleeve mechanism 1. At this time, the magnetic plug 2015 on the inner tube mechanism 2 will be precisely connected with the limiting slot 1016 on the inner wall support guide ring 1015 of the sleeve mechanism 1, and the initial positioning is achieved through magnetic attraction. The baffle assembly 2012 on the outer periphery of the inner tube mechanism 2 is located on the left side of the limiting guide plate 1013 on the outer periphery of the sleeve mechanism 1. The reset spring in the spring cover 2013 is in a compressed state. Under the pushing force of the reset spring, the plug assembly 2014 moves to the side of the limiting guide plate 1013 and finally embeds into the limiting slot 1014 on the left side of the limiting guide plate 1013, forming an axial pre-fixation. After the inner tube mechanism 2 is fully inserted, the two support mechanisms 3 on its inner wall push the limiting block 3011 towards the outer circumference of the sleeve mechanism 1 through the spring assembly 301. Since the limiting block 3011 matches the slot assembly 1012 on the outer circumference of the sleeve mechanism 1, under the elastic force of the spring assembly 301, the limiting block 3011 will be locked into the slot assembly 1012, realizing the radial fixation of the inner tube mechanism 2 and the sleeve mechanism 1, and completing the mechanical connection between the two. Then, the sleeve mechanism 1 and the inner tube mechanism 2 are connected to the external pipeline through the threaded joint A101 and the connecting nut A1011, and the threaded joint B201 and the connecting nut B2011, respectively. Tightening the connecting nut A1011 and the connecting nut B2011 further enhances the sealing of the overall connection. The tight fit between the insert assembly 2014 and the limiting slot 1014, combined with the continuous thrust of the return spring, forms the first line of defense, preventing external dust from entering the connector. The magnetic insertion block 2015 and the limiting slot 1016 magnetically adhere to each other, forming the second sealing structure and reducing the possibility of gas leakage. The engagement between the limiting block 3011 and the slot assembly 1012, as well as the tightening action of the connecting nut, ensure that the overall structure will not loosen due to vibration or other factors during operation, maintaining a stable compression of the sealing structure and ensuring sealing performance. During disassembly, first manually press the limiting block 3011 inward, then apply a pulling force to the inner tube mechanism 2 in the opposite direction, forcing the spring assembly 301 to compress. The limiting block 3011 disengages from the slot assembly 1012, and at the same time, the insert assembly 2014 exits from the limiting slot 1014 under the pulling force. The reset spring is further compressed, and the magnetic insert 2015 separates from the limiting slot 1016. Finally, the inner tube mechanism 2 is pulled out from the sleeve mechanism 1, completing the disassembly.

[0022] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components, and can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0023] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A self-sealing dustproof structure for a quick-connect fitting in a pneumatic brake pipeline, comprising a sleeve mechanism (1), characterized in that, The right side of the sleeve mechanism (1) is fixedly connected to a threaded joint A (101), and a connecting nut A (1011) is screwed onto the outside of the threaded joint A (101). The outer peripheral surface of the sleeve mechanism (1) is provided with a slot assembly (1012). There are two slot assemblies (1012), and the two slot assemblies (1012) are opened opposite each other on the upper and lower sides of the outer peripheral surface of the sleeve mechanism (1). A limiting guide plate (1013) is fixedly connected to the outer peripheral surface of the sleeve mechanism (1). The limiting guide plate (1013) is a ring structure, and an annular groove is opened on the left side of the limiting guide plate (1013). The annular groove is a limiting slot (1014). A support guide ring (1015) is fixedly connected to the inner wall of the sleeve mechanism (1).

2. The self-sealing dustproof structure of a quick-connect fitting for a pneumatic brake pipeline according to claim 1, characterized in that, The main body of the support guide ring (1015) is a ring structure, and the diameter of the support guide ring (1015) is smaller than the diameter of the sleeve mechanism (1). An annular groove is provided on the left end face of the support guide ring (1015), and the annular groove is a limiting slot (1016).

3. The self-sealing dustproof structure of a quick-connect fitting for a pneumatic brake pipeline according to claim 1, characterized in that, The inner tube mechanism (2) is inserted into the sleeve mechanism (1). A threaded joint B (201) is fixedly connected to the side of the inner tube mechanism (2) away from the sleeve mechanism (1). A connecting nut B (2011) is screwed onto the outside of the threaded joint B (201).

4. The self-sealing dustproof structure of a quick-connect fitting for a pneumatic brake pipeline according to claim 3, characterized in that, A baffle assembly (2012) is fixedly connected to the outer circumferential surface of the inner tube mechanism (2). The baffle assembly (2012) is a ring structure and is located on the left side of the limiting guide plate (1013). A spring cover (2013) is fixedly connected to the right side of the baffle assembly (2012).

5. The self-sealing dustproof structure of a quick-connect fitting for a pneumatic brake pipeline according to claim 4, characterized in that, The spring cover (2013) is equipped with a reset spring inside. A plug assembly (2014) is fixedly connected to the side of the spring cover (2013) away from the baffle assembly (2012). The plug assembly (2014) is a ring structure.

6. The self-sealing dustproof structure of a quick-connect fitting for a pneumatic brake pipeline according to claim 5, characterized in that, The insert assembly (2014) matches the limiting slot (1014) opened on the left side of the limiting guide plate (1013), and the reset spring pushes the insert assembly (2014) to move toward one side of the limiting guide plate (1013).

7. The self-sealing dustproof structure of a quick-connect fitting for a pneumatic brake pipeline according to claim 3, characterized in that, A magnetic plug (2015) is fixedly connected to the side of the inner tube mechanism (2) near the sleeve mechanism (1). The magnetic plug (2015) is inserted into the limiting slot (1016). Two support mechanisms (3) are fixedly connected to each other on the inner wall of the inner tube mechanism (2). A spring assembly (301) is fixedly connected to the inner side of the support mechanism (3). A limiting block (3011) is fixedly connected to the side of the spring assembly (301) away from the support mechanism (3). The limiting block (3011) matches the slot assembly (1012).

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