Quick-inserting water outlet pipe for automobile engine

By combining a quick-connect design with a damping rod and a wedge-shaped locking block, the problem of cumbersome and unstable connection of the traditional engine water outlet pipe is solved, achieving fast and stable water pipe connection and improving assembly efficiency and system stability.

CN224532824UActive Publication Date: 2026-07-21ZHENZHEN AUTO PARTS (NINGBO) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHENZHEN AUTO PARTS (NINGBO) CO LTD
Filing Date
2025-09-29
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Traditional car engine coolant outlet pipes are cumbersome and unstable to connect, easily becoming loose and causing coolant leaks, resulting in low assembly efficiency.

Method used

It adopts a quick-connect design, using a combination of damping rod and wedge-shaped block to achieve quick connection between water pipe and access pipe, and the connection stability is ensured by the cooperation of spring and retaining ring. The sleeve and conical structure facilitate disassembly and ensure sealing.

Benefits of technology

It enables quick and stable connection of water pipes and access pipes, improves assembly efficiency, avoids loosening and leakage, and ensures stable operation of the engine cooling system.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224532824U_ABST
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Abstract

The utility model relates to the technical field of automobile engine cooling system, concretely is a kind of quick plug type automobile engine water outlet pipe, including water pipe and access pipe, the both ends of water pipe are provided with connector, the front end of access pipe is provided with abutment ring, the surface of access pipe is provided with conical collar, the inner wall of connector is provided with several groups of containing groove. The utility model only needs to be directly aimed at the connector of water pipe end portion and be inserted into access pipe, can effectively connect between water pipe and access pipe, greatly improve the connection convenience between water pipe and access pipe, and then improve the efficiency of assembly work, in addition, when vehicle is subjected to the action of vibration, several groups of wedge-shaped clamping block can also always keep under the elastic force of spring and insert into the inside of connector and firmly hold the rear end of conical collar, so that water pipe and access pipe can be effectively connected and not prone to loosening, ensure the stable operation of engine cooling system.
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Description

Technical Field

[0001] This utility model relates to the technical field of automotive engine cooling systems, and more specifically, to a quick-connect automotive engine water outlet pipe. Background Technology

[0002] The engine coolant outlet pipe is an important component of the cooling system. Its main function is to guide the heated coolant from the engine water passage to the radiator for cooling, and then return the cooled liquid to the engine for recirculation.

[0003] Traditional automotive engine coolant outlet hoses typically use metal clamps or flange bolts for connection. Metal clamps require specialized tools for tightening, and the tightening force depends heavily on the operator's experience; overtightening can damage the hose, while undertightening can lead to coolant leaks, resulting in cumbersome operation and low assembly efficiency. Flange bolt connections are extremely difficult to assemble in the confined space of an engine compartment, and the bolts and nuts are likely to loosen under prolonged vehicle vibration, causing the hose connection to detach and resulting in coolant leaks. Therefore, there is an urgent need for an engine coolant outlet hose that allows for quick installation and reliable connection. Utility Model Content

[0004] This invention provides a quick-connect automotive engine water outlet pipe, which solves the technical problems in the prior art.

[0005] In view of the above problems, the technical solution proposed by this utility model is as follows: A quick-connect automotive engine coolant outlet pipe includes a water pipe and an inlet pipe. The water pipe has connectors at both ends, and the inlet pipe has an abutment ring at its front end. A tapered retaining ring is provided on the surface of the inlet pipe. The inner wall of the connector has several sets of receiving grooves. A damping rod is slidably disposed inside each set of receiving grooves. One end of the damping rod extends into the inner side of the connector and is connected to a wedge-shaped retaining block. The other end of the damping rod extends outward from the outer side of the connector. A spring is also sleeved on the surface of the damping rod, with both ends of the spring abutting between the wedge-shaped retaining block and the inner wall of the receiving groove, respectively.

[0006] Furthermore, the surface of the connector is threaded with a set of sleeves, the end of the sleeves is provided with a cone, and the end of the damping rod extending outward from the outside of the connector is connected to a conical abutment block that matches the cone.

[0007] Furthermore, the surface of the sleeve is covered with anti-slip textures.

[0008] Furthermore, a slot is provided around the front end of the access tube, and an O-ring is nested inside the slot.

[0009] Furthermore, the water pipe and the end of the connector are connected by a corrugated pipe section.

[0010] Furthermore, the surface of the water pipe is fixedly fitted with an installation bracket, and the installation bracket is provided with screw holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are: by simply aligning the connector at the end of the water pipe directly with and inserting it into the access pipe, an effective connection between the water pipe and the access pipe can be made, which greatly improves the convenience of the connection between the water pipe and the access pipe, thereby improving the efficiency of the assembly work. In addition, when the vehicle is subjected to vibration, several sets of wedge-shaped blocks can always be kept inserted into the interior of the connector under the elastic force of the spring and firmly lock the rear end of the conical retaining ring. Therefore, the connection between the water pipe and the access pipe can be kept effective and is not easy to loosen, thus ensuring the stable operation of the engine cooling system. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the disassembled structure of this utility model; Figure 3 This is a cross-sectional structural diagram of the connector in this utility model.

[0014] In the diagram: 1. Water pipe; 2. Connecting pipe; 3. Connector; 4. Abutment ring; 5. Conical retaining ring; 6. Receiving groove; 7. Damping rod; 8. Wedge-shaped retaining block; 9. Spring; 10. Sleeve; 11. Conical head; 12. Conical abutment block; 13. Anti-slip texture; 14. Receiving groove; 15. O-ring seal; 16. Mounting bracket; 17. Screw hole. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] Please see Figure 1-3 A quick-connect automotive engine water outlet hose includes a water pipe 1 and an inlet pipe 2. The inlet pipe 2 is located on both the radiator and the engine water jacket, and the two can be connected through the water pipe 1. Connectors 3 are provided at both ends of the water pipe 1. An abutment ring 4 is provided at the front end of the inlet pipe 2. When the inlet pipe 2 and the connector 3 are inserted into each other, the abutment ring 4 at the front end of the inlet pipe 2 will abut against the innermost end of the connector 3. A conical retaining ring 5 is provided on the surface of the inlet pipe 2. Several sets of receiving grooves 6 are provided on the inner wall of the connector 3. A damping rod 7 is slidably installed inside each set of receiving grooves 6. One end of the damping rod 7 extends into the inner side of the connector 3 and is connected to a wedge-shaped retaining block 8. The other end of the damping rod 7 extends out of the outer side of the connector 3. When the inlet pipe 2 is inserted into the connector 3, the inlet pipe 2... The conical retaining ring 5 on the surface will abut against the side of the wedge-shaped retaining block 8 that extends into the inside of the connector 3. The side of the wedge-shaped retaining block 8 and the side of the conical retaining ring 5 are mutually fitted inclined structures. As the conical retaining ring 5 extends into the inside of the connector 3, it will exert an outward squeezing force on the side of the wedge-shaped retaining block 8, causing several sets of wedge-shaped retaining blocks 8 to move towards the outside of the connector 3 and be stored in the receiving groove 6. The surface of the damping rod 7 is also fitted with a spring 9. The two ends of the spring 9 abut against the wedge-shaped retaining block 8 and the inner wall of the receiving groove 6, respectively. When the wedge-shaped retaining block 8 moves towards the outside of the connector 3 and is stored in the receiving groove 6, the spring 9 fitted on the surface of the damping rod 7 will be compressed and exert an elastic force on the wedge-shaped retaining block 8 to move towards the inside of the connector 3.

[0018] During installation, the connector 3 at the end of the water pipe 1 can be directly aligned and inserted into the connecting pipe 2. As the connecting pipe 2 extends into the connector 3, the conical retaining ring 5 on the surface of the connecting pipe 2 will abut against the sides of several sets of wedge-shaped retaining blocks 8 on the inner wall of the connector 3. At this time, the wedge-shaped retaining blocks 8 will move outward from the connector 3 under the pushing action of the conical retaining ring 5 and be housed in the receiving groove 6. At this time, the spring 9 located in the receiving groove 6 is compressed and exerts a spring force on the wedge-shaped retaining blocks 8, causing them to move inward from the connector 3. When the connecting pipe 2 and the connector 3 are fully inserted, the contact ring 4 at the end of the connecting pipe 2 abuts against the innermost end of the connector 3. At this time, the conical retaining ring 5 will move completely in front of the wedge-shaped retaining blocks 8, and the sides of the wedge-shaped retaining blocks 8 will no longer be squeezed by the conical retaining ring 5. The several sets of wedge-shaped retaining blocks 8 will then extend out of the receiving groove 6 under the spring force of the spring 9. Then it moves back into the interior of the connector 3. At this time, the several sets of wedge-shaped locking blocks 8 after resetting can be firmly locked into the rear end of the conical retaining ring 5, thereby locking the end of the connecting pipe 2 in the connector 3, so that the water pipe 1 and the connecting pipe 2 can maintain a connection. It can be seen that as long as the connector 3 at the end of the water pipe 1 is directly aligned and inserted into the connecting pipe 2, the water pipe 1 and the connecting pipe 2 can be effectively connected, which greatly improves the convenience of the connection between the water pipe 1 and the connecting pipe 2, and thus improves the efficiency of the assembly work. In addition, when the vehicle is subjected to vibration, the several sets of wedge-shaped locking blocks 8 can always be kept inserted into the interior of the connector 3 under the elastic force of the spring 9 and firmly lock the rear end of the conical retaining ring 5. Therefore, the water pipe 1 and the connecting pipe 2 can maintain an effective connection and are not easy to loosen, ensuring the stable operation of the engine cooling system.

[0019] For further details, please refer to Figure 1-3 A set of sleeves 10 are nested on the surface of the connector 3, and are threadedly connected to the connector 3. Therefore, by rotating the sleeves 10, its axial movement along the connector 3 can be controlled. The end of the sleeve 10 is provided with a cone head 11. The end of the damping rod 7 extending outside the connector 3 is connected to a conical abutment block 12 that fits with the cone head 11. When it is necessary to disassemble the water pipe 1 and the inlet pipe 2, the sleeve 10 can be rotated to move it closer to the conical abutment block 12. During this process, the cone head 11 at the end of the sleeve 10 will abut against the cone head 12. The conical abutment block 12 generates an outward pushing force, which causes the conical abutment block 12 to drive the spring 9 to move towards the outside of the connector 3 under the action of this pushing force. At this time, several sets of wedge-shaped locking blocks 8 will move out of the interior of the connector 3 and be stored in the damping rod 7 under the action of the spring 9. The rear end of the conical locking ring 5 will no longer lock the rear end of the wedge-shaped locking block 8. At this time, the connector 3 can be directly pulled off the inlet pipe 2 to separate the water pipe 1 from the inlet pipe 2, thus realizing the disassembly of the water pipe 1 and facilitating maintenance work. It is also worth noting that the surface of the sleeve 10 is covered with anti-slip textures 13. When the user rotates the sleeve 10, gripping the anti-slip textures 13 can increase the frictional resistance between the hand and the sleeve 10, thereby making it easier to rotate the sleeve 10 and preventing the hand from slipping.

[0020] For further details, please refer to Figure 2 The front end of the inlet pipe 2 is provided with a groove 14, and an O-ring 15 is nested inside the groove 14. When the inlet pipe 2 and the connector 3 are inserted into place, the front end of the inlet pipe 2 extends into the interior of the water pipe 1. At this time, the O-ring 15 around the front end of the inlet pipe 2 will tightly abut against the inner wall of the water pipe 1. The O-ring 15 can effectively improve the sealing of the connection between the water pipe 1 and the inlet pipe 2, and prevent liquid from leaking out from the joint between the two.

[0021] Furthermore, the ends of the water pipe 1 and the connector 3 are connected by a corrugated pipe section. The corrugated pipe section allows the connector 3 to extend and retract a certain distance at the end of the water pipe 1, making the connector 3 at the end of the water pipe 1 movable. This makes it easier for the user to insert the connector 3 into the access pipe 2.

[0022] For further details, please refer to Figure 1 The surface of the water pipe 1 is fixedly fitted with an installation bracket 16. The installation bracket 16 is provided with a screw hole 17. After the screw is passed through the screw hole 17, the water pipe 1 can be fixed inside the vehicle to prevent the water pipe 1 from shaking due to the vibration of the vehicle, and further improve the stability of the connection between the water pipe 1 and the connecting pipe 2.

[0023] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A quick-connect automotive engine water outlet pipe, comprising a water pipe (1) and an inlet pipe (2), characterized in that, The water pipe (1) is provided with connectors (3) at both ends, the inlet pipe (2) is provided with a contact ring (4) at the front end, the inlet pipe (2) is provided with a conical retaining ring (5) on the surface of the inlet pipe (2), and the inner wall of the connector (3) is provided with several sets of receiving grooves (6). Each set of receiving grooves (6) is slidably provided with a damping rod (7). One end of the damping rod (7) extends into the inner side of the connector (3) and is connected to a wedge-shaped retaining block (8). The other end of the damping rod (7) extends out of the outer side of the connector (3). The surface of the damping rod (7) is also fitted with a spring (9). The two ends of the spring (9) respectively abut against the wedge-shaped retaining block (8) and the inner wall of the receiving groove (6).

2. The quick-connect automotive engine coolant outlet pipe according to claim 1, characterized in that, The surface of the connector (3) is threaded with a set of sleeves (10), and the end of the sleeve (10) is provided with a cone head (11). The end of the damping rod (7) extending out of the outside of the connector (3) is connected to a conical abutment block (12) that matches the cone head (11).

3. The quick-connect automotive engine coolant outlet pipe according to claim 2, characterized in that, The surface of the sleeve (10) is covered with anti-slip textures (13).

4. The quick-connect automotive engine coolant outlet pipe according to claim 1, characterized in that, The front end of the access tube (2) is provided with a slot (14), and an O-ring (15) is nested inside the slot (14).

5. The quick-connect automotive engine coolant outlet pipe according to claim 1, characterized in that, The water pipe (1) and the end of the connector (3) are connected by a corrugated pipe section.

6. The quick-connect automotive engine coolant outlet pipe according to claim 1, characterized in that, The surface of the water pipe (1) is fixedly fitted with an installation bracket (16), and the installation bracket (16) is provided with screw holes (17).