A plastic quick-connect connector for new energy bus brake system

Abstract

The utility model discloses a plastic quick-connect connector for a new energy passenger car brake system, which relates to the technical field of quick-connect plugs and comprises a plastic connector body, wherein a plug-in portion is arranged in the plastic connector body, a plug-in hose is inserted on the plug-in portion, a first filling piece and a second filling piece are sleeved on the plug-in hose, the first filling piece is inserted into the plastic connector body along the plug-in hose, the second filling piece is inserted into the first filling piece along the plug-in hose, the first filling piece is inserted into the plastic connector body along the hose, and then the second filling piece is inserted into the first filling piece along the hose, so that the convex shoulder block on the second filling piece is pressed against the groove of the first filling piece, and the inverted teeth on the side wall of the first filling piece are in conflict with the inner wall of the plastic connector body, so that the first filling piece, the second filling piece and the plug-in hose are squeezed against each other in the plastic connector body, so that the plug-in hose will not fall off from the plug-in portion.

Description

Technical Field

[0001] The utility model relates to the technical field of quick-connect plugs, in particular to a plastic quick-connect connector for a brake system of a new energy bus. Background Art

[0002] During the assembly process of the pipeline system, the pipe joints will be subjected to loads such as vibration, impact, and alternating loads during operation, which may cause loosening between the quick-connect connector and the hose. The existing quick-connect plug connects the plug hose and the plug directly. Over time, due to external forces such as vibration, the plug hose is easily separated from the plug connector. Therefore, this problem needs to be solved.

[0003] The existing patent (publication number: CN215445516U) proposes a plastic right-angle quick-connect connector for air brakes, a plastic right-angle quick-connect connector for air brakes, including a main body, the main body is an "L" right angle shape, the horizontal end of the main body is a reverse tooth end, the vertical end of the reverse tooth end is a quick-connect end, an SV230 NG12 nut seat is inserted below the quick-connect end, a sealing ring 1 and a sealing ring 2 are arranged on the outside of the quick-connect end, the inner diameter of the quick-connect end is φ9.8mm, the reverse tooth end can be connected to a nylon tube with an inner diameter of φ9.0mm, the inner diameter of the reverse tooth end is φ9.8mm, and the cross-sections of the reverse tooth end and the quick-connect end are mutually perpendicular rectangular shapes, and reinforcing ribs are arranged inside the quick-connect end. The injection molding process performance is optimized, while the flow resistance is significantly reduced to meet the flow requirements. Compared with other connectors of the same specifications, this connector has a larger air flow, lower cost and weight. At the same time, this product is an upgrade of the original quick-insert right-angle brass connector for air brakes, providing more options for the design and optimization of the OEM's air brake system.

[0004] The above-mentioned quick-connect plug adopts the technical solution of connecting the plug and the pipeline that the inverted tooth end can be connected to a nylon tube with an inner diameter of φ9.0mm, that is, the pipeline and the plug are connected by direct plug-in. Although this solution can connect the plug and the pipeline, and the inverted teeth directly act on the pipeline, it is easy to cause damage to the inner wall of the pipeline. In addition, when subjected to external force, the pipeline is still very easy to fall off from the plug. Therefore, we propose a plastic quick-connect connector for a new energy bus brake system to solve the above problem. Utility Model Content

[0005] The utility model provides a plastic quick-connect connector for a new energy passenger car brake system, which solves the technical problem that the current connector and the hose are not firmly connected.

[0006] In order to solve the above technical problems, the utility model provides a plastic quick-connect connector for a new energy passenger car brake system, including a plastic connector body, a plug-in portion is arranged in the plastic connector body, a plug-in hose is inserted on the plug-in portion, a plug-in groove adapted to the plug-in hose is provided on the plug-in portion, a connector inner cavity connected to the interior of the plastic connector body is provided in the plug-in portion, a fixed retaining spring is arranged on the end of the plug-in portion away from the plug-in groove, the fixed retaining spring is fixed on the inner wall of the plastic connector body, a first filling piece and a second filling piece are sleeved on the plug-in hose, the first filling piece is inserted in the plastic connector body along the plug-in hose, the second filling piece is inserted in the first filling piece along the plug-in hose, the second filling piece is clamped with the first filling piece, and the first filling piece is clamped with the fixed retaining spring.

[0007] Preferably, one end of the first filling piece is provided with a limiting shoulder abutting against the plug interface of the plastic joint body, and the side wall of the first filling piece is provided with a plurality of inverted teeth abutting against the inner wall of the plug interface of the plastic joint body.

[0008] The above technical solution is adopted: a limiting shoulder is provided at one end of the first filling piece, which abuts against the plug-in interface of the plastic joint body, so that the first filling piece is inserted and fixed in the plug-in interface of the plastic joint body, and a plurality of inverted teeth are provided on the side wall of the first filling piece, which abut against the inner wall of the plug-in interface of the plastic joint body, so that the first filling piece and the plastic joint body are not easily separated.

[0009] Preferably, a convex shoulder block is arranged at one end of the second filling piece, and a groove which is engaged with the convex shoulder block is arranged at one end of the first filling piece away from the limiting shoulder.

[0010] The above technical solution is adopted: a shoulder block is provided at one end of the second filling piece, and a groove that is engaged with the shoulder block is opened at the end of the first filling piece away from the limiting shoulder, so that the shoulder block can be engaged in the groove to prevent the second filling piece from falling off the first filling piece.

[0011] Preferably, a sealing ring is embedded on the fixing clamping ring, and the sealing ring is sleeved on the plug-in hose.

[0012] By adopting the above technical solution, a sealing ring is embedded on the fixed clamping spring, and the sealing ring is sleeved on the plug-in hose, thereby improving the sealing performance between the plug-in part and the plug-in hose.

[0013] Preferably, the size of the sealing ring is adapted to the plug hose, and the sealing ring is made of rubber material.

[0014] The above technical solution is adopted: the size of the sealing ring is adapted to the plug-in hose, and the sealing ring is made of rubber material, so that a good sealing effect is achieved between the plug-in hose and the plug-in part to prevent leakage.

[0015] Preferably, a plurality of inverted teeth are provided and evenly distributed on the side wall of the plug-in portion.

[0016] By adopting the above technical solution, a plurality of inverted teeth are arranged and evenly distributed on the side wall of the plug-in portion, so that the first filling piece can be fixed in contact with the inner wall of the plastic joint body.

[0017] Preferably, the protruding height of the shoulder block is greater than the depth of the groove.

[0018] The above technical solution is adopted: the protruding height of the shoulder block is greater than the depth of the groove, so that the shoulder block can squeeze the groove, thereby making the first filling piece squeeze the inner wall of the plastic joint body. Since the size of the inner wall of the plastic joint body cannot be changed, the first filling piece, the second filling piece and the plug-in hose bracket are squeezed against each other, thereby preventing the plug-in hose from falling off the plug-in part.

[0019] Compared with the related art, the utility model has the following beneficial effects:

[0020] 1. Compared with the traditional quick-connect connector, the utility model is provided with a first filling piece and a second filling piece, the first filling piece and the second filling piece are both sleeved on the plug-in hose, and then the plug-in hose is plugged into the plug-in portion in the plastic connector body. After plugging, the first filling piece is inserted into the plastic connector body along the hose, and then the second filling piece is inserted into the first filling piece along the hose, so that the convex shoulder block on the second filling piece is against the groove of the first filling piece, and the inverted teeth on the side wall of the first filling piece are in conflict with the inner wall of the plastic connector body, so that the first filling piece, the second filling piece, and the plug-in hose are squeezed against each other in the plastic connector body, so that the plug-in hose will not fall off from the plug-in portion and will not cause damage to the plug-in hose.

[0021] 2. In the utility model, a base is provided, and the base is composed of two waterproof seats. The design of the waterproof seats is that the two waterproof seats are tightly connected by connecting threaded rods, which avoids the problem of many holes in the board house and easy water seepage caused by the traditional use of multiple bolts. At the same time, the bottom plate can be further reinforced during the assembly of the waterproof seats, reducing the gap between the board house structures and further improving the waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a plastic quick-connect connector for a new energy bus brake system;

[0023] Figure 2It is a cross-sectional view of a plug-in hose and a plastic quick-connect connector body in a plastic quick-connect connector for a new energy bus brake system;

[0024] Figure 3 This is a disassembled diagram of a plug-in part, a first filler, and a second filler in a plastic quick-connect connector for a new energy bus brake system;

[0025] Figure 4 This is a partial view of a plastic quick-connect connector used in the brake system of a new energy bus.

[0026] Numbers in the figure: 1, plastic connector body; 2, plug-in part; 21, plug-in groove; 22, connector inner cavity; 3, fixing retaining ring; 4, sealing ring; 5, first filling piece; 51, limiting shoulder; 52, groove; 53, inverted tooth; 6, second filling piece; 61, boss block; 7, plug-in hose. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] Embodiment 1

[0029] like Figure 1-Figure 4 As shown, a plastic quick-connect connector for a new energy passenger car brake system comprises a plastic connector body 1, a plug-in portion 2 is arranged in the plastic connector body 1, a plug-in hose 7 is inserted on the plug-in portion 2, a plug-in groove 21 adapted to the plug-in hose 7 is provided on the plug-in portion 2, a connector inner cavity 22 communicating with the inside of the plastic connector body 1 is provided in the plug-in portion 2, a fixed clamping spring 3 is arranged at one end of the plug-in portion 2 away from the plug-in groove 21, the fixed clamping spring 3 is fixed on the inner wall of the plastic connector body 1, a first filling piece 5 and a second filling piece 6 are sleeved on the plug-in hose 7, the first filling piece 5 is inserted in the plastic connector body 1 along the plug-in hose 7, the second filling piece 6 is inserted in the first filling piece 5 along the plug-in hose 7, the second filling piece 6 is clamped with the first filling piece 5, and the first filling piece 5 is clamped with the fixed clamping spring 3;

[0030] A plug-in hose 7 is inserted into the plug-in portion 2, a plug-in groove 21 adapted to the plug-in hose 7 is provided on the plug-in portion 2, a joint inner cavity 22 connected to the inside of the plastic joint body 1 is provided in the plug-in portion 2, a fixed clamping spring 3 is provided at one end of the plug-in portion 2 away from the plug-in groove 21, the fixed clamping spring 3 is fixed on the inner wall of the plastic joint body 1, a first filling piece 5 and a second filling piece 6 are sleeved on the plug-in hose 7, the first filling piece 5 is inserted into the plastic joint body 1 along the plug-in hose 7, the second filling piece 6 is inserted into the first filling piece 5 along the plug-in hose 7, the second filling piece 6 is clamped with the first filling piece 5, the first filling piece 5 is clamped with the fixed clamping spring 3, and the first filling piece 5 is clamped with the fixed clamping spring 3. The first filling piece 5 and the second filling piece 6 are both sleeved on the plug-in hose 7, and then the plug-in hose 7 is inserted into the plug-in part 2 in the plastic joint body 1. After the plug-in, the first filling piece 5 is inserted into the plastic joint body 1 along the hose, and then the second filling piece 6 is inserted into the first filling piece 5 along the hose, so that the shoulder block 61 on the second filling piece 6 is against the groove 52 of the first filling piece 5, and the inverted teeth 53 on the side wall of the first filling piece 5 are in conflict with the inner wall of the plastic joint body 1, so that the first filling piece 5, the second filling piece 6, and the plug-in hose 7 are squeezed against each other in the plastic joint body 1, so that the plug-in hose 7 will not fall off from the plug-in part 2 and will not cause damage to the plug-in hose 7.

[0031] Embodiment 2

[0032] like Figure 1-Figure 4 As shown, a limiting shoulder 51 is provided at one end of the first filling piece 5 to abut against the plug interface of the plastic joint body 1, and a plurality of inverted teeth 53 are provided on the side wall of the first filling piece 5 to abut against the inner wall of the plug interface of the plastic joint body 1. A convex shoulder block 61 is provided at one end of the second filling piece 6, and a groove 52 is provided at the end of the first filling piece 5 away from the limiting shoulder 51 to clamp the convex shoulder block 61. A sealing ring 4 is inlaid on the fixed clamping spring 3, and the sealing ring 4 is sleeved on the plug hose 7. The size of the sealing ring 4 is adapted to the plug hose 7. The sealing ring 4 is made of rubber material, so that the plug hose 7 and the plug part 2 have a good sealing effect to prevent leakage. A plurality of inverted teeth 53 are provided and evenly distributed on the side wall of the plug part 2, and the protruding height of the convex shoulder block 61 is greater than the depth of the groove 52.

[0033] One end of the first filling piece 5 is provided with a limiting shoulder 51 that abuts against the plug interface of the plastic joint body 1, so that the first filling piece 5 is inserted and fixed in the plug interface of the plastic joint body 1, and the side wall of the first filling piece 5 is provided with a plurality of inverted teeth 53 that abut against the inner wall of the plug interface of the plastic joint body 1, so that the first filling piece 5 and the plastic joint body 1 are not easily separated, and the sealing ring 4 is inlaid on the fixing clamp 3, and the sealing ring 4 is sleeved on the plug hose 7, so as to improve the sealing between the plug part 2 and the plug hose 7;

[0034] A plurality of inverted teeth 53 are arranged and evenly distributed on the side wall of the plug-in portion 2, so that the first filling piece 5 can be fixed in contact with the inner wall of the plastic joint body 1. The protruding height of the shoulder block 61 is greater than the depth of the groove 52, so that the shoulder block 61 can squeeze the groove 52, thereby making the first filling piece 5 squeeze the inner wall of the plastic joint body 1. Since the size of the inner wall of the plastic joint body 1 cannot be changed, the first filling piece 5, the second filling piece 6 and the plug-in hose 7 bracket are squeezed against each other, thereby preventing the plug-in hose 7 from falling off from the plug-in portion 2.

[0035] Working principle: Figure 1-4 As shown, the first filling piece 5 and the second filling piece 6 are both sleeved on the plug hose 7, and then the plug hose 7 is inserted into the plug-in part 2 in the plastic joint body 1. After the plug-in, the first filling piece 5 is inserted into the plastic joint body 1 along the hose, and then the second filling piece 6 is inserted into the first filling piece 5 along the hose, so that the shoulder block 61 on the second filling piece 6 is against the groove 52 of the first filling piece 5, and the inverted teeth 53 on the side wall of the first filling piece 5 are in conflict with the inner wall of the plastic joint body 1, so that the first filling piece 5, the second filling piece 6, and the plug hose 7 are squeezed against each other in the plastic joint body 1, so that the plug hose 7 will not fall off from the plug-in part 2 and will not cause damage to the plug hose 7.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic quick-connect connector for a new energy passenger car brake system, comprising a plastic connector body (1), characterized in that: The plastic joint body (1) is provided with a plug-in portion (2), a plug-in hose (7) is inserted into the plug-in portion (2), a plug-in slot (21) adapted to the plug-in hose (7) is provided on the plug-in portion (2), a joint inner cavity (22) connected to the inside of the plastic joint body (1) is provided in the plug-in portion (2), a fixing spring (3) is provided at one end of the plug-in portion (2) away from the plug-in slot (21), the fixing spring (3) is fixed to the inner wall of the plastic joint body (1), a first filling piece (5) and a second filling piece (6) are sleeved on the plug-in hose (7), the first filling piece (5) is inserted into the plastic joint body (1) along the plug-in hose (7), the second filling piece (6) is inserted into the first filling piece (5) along the plug-in hose (7), the second filling piece (6) is clamped with the first filling piece (5), and the first filling piece (5) is clamped with the fixing spring (3).

2. The plastic quick-connect connector for a new energy bus brake system according to claim 1, characterized in that: One end of the first filling piece (5) is provided with a limiting shoulder (51) that abuts against the plug-in interface of the plastic joint body (1), and the side wall of the first filling piece (5) is provided with a plurality of inverted teeth (53) that abut against the inner wall of the plug-in interface of the plastic joint body (1).

3. The plastic quick-connect connector for a new energy bus brake system according to claim 1, characterized in that: A convex shoulder block (61) is provided at one end of the second filling piece (6), and a groove (52) engaged with the convex shoulder block (61) is provided at one end of the first filling piece (5) away from the limiting shoulder (51).

4. The plastic quick-connect connector for a new energy bus brake system according to claim 1, characterized in that: A sealing ring (4) is inlaid on the fixed clamping ring (3), and the sealing ring (4) is sleeved on the plug-in hose (7).

5. The plastic quick-connect connector for a new energy bus brake system according to claim 4, characterized in that: The size of the sealing ring (4) is adapted to the plug-in hose (7), and the sealing ring (4) is made of rubber material.

6. The plastic quick-connect connector for a new energy bus brake system according to claim 2, characterized in that: A plurality of inverted teeth (53) are arranged and evenly distributed on the side wall of the plug-in portion (2).

7. The plastic quick-connect connector for a new energy bus brake system according to claim 3, characterized in that: The protruding height of the shoulder block (61) is greater than the depth of the groove (52).

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