Accurately-adaptive water tank connecting pipe fitting
By designing a winding rod and locking mechanism for the water tank connection pipe fittings, the problems of inaccurate matching between the water tank connection pipe and the installation head and low installation efficiency were solved, achieving the effects of rapid installation and strong versatility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2026-03-13
AI Technical Summary
The existing automotive radiator connection pipe and radiator mounting head have dimensional errors, resulting in inaccurate fitting and low installation efficiency.
A connecting pipe fitting was designed, comprising a water tank body, a connecting pipe, a positioning block, a winding rod, a steel wire rope, and a locking mechanism. The winding rod and locking mechanism enable quick fixing and ensure precise fit between the connecting pipe and the water tank mounting head.
It enables rapid installation and precise fitting of connecting pipes, improves installation efficiency, and enhances the versatility of installation heads for water tanks of different sizes.
Smart Images

Figure CN223991806U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts technology, specifically to a precisely fitting water tank connection pipe. Background Technology
[0002] The engine radiator, also known as the engine water tank, is a key component of a water-cooled engine cooling system. It cools the engine through forced water circulation, ensuring continuous operation within its normal temperature range. The radiator works by utilizing the heat loss of the coolant; this heat loss is essential for maintaining the proper temperature of the internal combustion engine. Generally, a water pump driven by the engine forces the coolant to circulate throughout the engine. The radiator is the device that absorbs the heat generated by the engine and dissipates it into the air. This heat dissipation accounts for approximately 20% to 30% of the engine's total heat output.
[0003] In existing technologies, the connecting pipes used in automotive radiators often have dimensions that do not match the dimensions of the radiator mounting head, resulting in inaccurate fit between the connecting pipes and the radiator mounting head, and low installation efficiency. Therefore, we have introduced a precisely fitting radiator connecting pipe fitting. Utility Model Content
[0004] The purpose of this utility model is to provide a precisely fitting water tank connecting pipe that can quickly fix the connecting pipe to the water tank body. It not only has high installation efficiency, but also can accurately fit water tank mounting heads of different sizes, and has strong versatility, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A precisely fitting water tank connection fitting includes a water tank body and a connecting pipe. The water tank body is provided with a water tank mounting head that is compatible with the connecting pipe. Positioning blocks are fixedly provided on the outer sides of both ends of the connecting pipe. The positioning blocks have cavities inside. Through holes are provided on both sides of the cavity near the connecting pipe. A winding rod is rotatably provided in the cavity through a rolling bearing. One end of the winding rod passes through the outside of the positioning block and is provided with a locking mechanism. Steel wire ropes are provided on the outside of both ends of the connecting pipe. The two ends of the steel wire ropes pass through the two through holes respectively and are fixedly connected to the two sides of the winding rod.
[0007] Furthermore, the locking mechanism includes a rotating wheel with a circular groove at the lower center. The upper end of the winding rod extends into the circular groove, and the rod wall of the winding rod has a strip-shaped hole inside the circular groove. A limiting rod is slidably provided on the lower side of the strip-shaped hole. Both ends of the limiting rod are fixedly connected to the circular groove. A spring is fixedly provided on the upper side wall of the limiting rod. Two locking pins are fixedly provided at the bottom edge of the rotating wheel, and multiple locking holes that cooperate with the locking pins are evenly provided on the upper side of the positioning block.
[0008] Furthermore, the sidewall of the rotating wheel is provided with anti-slip texture.
[0009] Furthermore, the lower end of the locking pin is chamfered.
[0010] Furthermore, the chamfer angle is set to 45°.
[0011] Furthermore, the upper end of the spring is fixedly connected to the strip hole, and the spring is always in a compressed state.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This precisely fitting water tank connection fitting, consisting of a connecting pipe, positioning block, water tank mounting head, water tank body, steel wire rope, winding rod, limit rod, spring, rotating wheel, and locking pins, allows for quick installation. One end of the connecting pipe is fitted onto the water tank mounting head. Pulling the rotating wheel upwards moves the limit rod upwards, compressing the spring. Simultaneously, the rotating wheel moves the two locking pins to the outside of the locking holes. Rotating the rotating wheel then causes the winding rod to rotate through the limit rod and the slotted hole. The winding rod winds the steel wire rope, which, located outside the positioning block, tightly binds the end of the connecting pipe to the water tank mounting head. Returning the rotating wheel to its original position allows the two locking pins on its underside to engage with the corresponding locking holes, quickly fixing the connecting pipe to the water tank body. This not only offers high installation efficiency but also precisely fits water tank mounting heads of different sizes, making it highly versatile. Attached Figure Description
[0014] Figure 1 This is a structural diagram of a precisely fitted water tank connection pipe fitting.
[0015] Figure 2 This is a side view of a precisely fitted water tank connection pipe.
[0016] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle.
[0017] In the diagram: 1. Connecting pipe; 2. Positioning block; 3. Water tank mounting head; 4. Water tank body; 5. Steel wire rope; 6. Winding rod; 7. Limiting rod; 8. Spring; 9. Rotating wheel; 10. Locking pin. Detailed Implementation
[0018] 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.
[0019] Please see Figures 1 to 3 This utility model provides a technical solution:
[0020] A precisely fitting water tank connection fitting includes a water tank body 4 and a connecting pipe 1. The water tank body 4 is provided with a water tank mounting head 3 that is adapted to the connecting pipe 1. Positioning blocks 2 are fixedly provided on the outer sides of both ends of the connecting pipe 1. The positioning blocks 2 have cavities inside. Through holes are provided on both sides of the cavity near the connecting pipe 1. A winding rod 6 is rotatably provided in the cavity through a rolling bearing. One end of the winding rod 6 passes through the outside of the positioning block 2 and is provided with a locking mechanism. Steel wire ropes 5 are provided on the outer sides of both ends of the connecting pipe 1. The two ends of the steel wire ropes 5 pass through the two through holes respectively and are fixedly connected to the two sides of the winding rod 6. The steel wire ropes 5 are made of stainless steel, which is not easy to rust and has a long service life.
[0021] The locking mechanism includes a rotating wheel 9, with a circular groove in the middle of its lower end. The upper end of a winding rod 6 extends into the circular groove. A strip-shaped hole is provided on the rod wall of the winding rod 6 inside the circular groove. A limiting rod 7 is slidably provided on the lower side of the strip-shaped hole. Both ends of the limiting rod 7 are fixedly connected to the circular groove. A spring 8 is fixedly provided on the upper side of the limiting rod 7. Two locking pins 10 are fixedly provided at the bottom edge of the rotating wheel 9. Multiple locking holes that cooperate with the locking pins 10 are evenly provided on the upper side of the positioning block 2. The side wall of the rotating wheel 9 is provided with anti-slip texture, which increases the friction of the side wall of the rotating wheel 9, making it easier for the operator to rotate the rotating wheel 9. The lower end of the locking pin 10 is chamfered at an angle of 45°, which facilitates the locking pin 10 to be inserted into the locking hole, thereby locking the rotating wheel 9. The upper end of the spring 8 is fixedly connected to the strip-shaped hole, and the spring 8 is always in a compressed state. The spring 8 can push the limiting rod downward, and the limiting rod drives the two locking pins to be inserted into the locking hole through the rotating wheel.
[0022] In use, one end of the connecting pipe 1 is fitted onto the water tank mounting head 3, and the rotating wheel 9 is pulled upward. The rotating wheel 9 drives the limiting rod 7 to move upward, and the limiting rod 7 compresses the spring 8. At the same time, the rotating wheel 9 drives the two locking pins 10 to move outside the locking hole. At this time, the rotating wheel 9 is rotated, and the rotating wheel 9 drives the winding rod 6 to rotate through the limiting rod 7 and the strip hole. While the winding rod 6 drives the wire rope 5 to wind, the wire rope 5 is located outside the positioning block 2 and tightly binds the end of the connecting pipe 1 to the water tank mounting head 3. The rotating wheel 9 is then reset, and the two locking pins 10 on the lower side of the rotating wheel 9 are inserted into the corresponding locking holes. The connecting pipe 1 can be quickly fixed to the water tank body 4. It is not only efficient in installation, but also can accurately adapt to water tank mounting heads 3 of different sizes, and has strong versatility.
[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A precisely fitted water tank connecting pipe fitting, comprising a water tank body (4) and a connecting pipe (1), characterized in that: The water tank body (4) is provided with a water tank mounting head (3) matched with the connecting pipe (1), the connecting pipe (1) is fixedly provided with a positioning block (2) on the outer side of both ends, the positioning block (2) is internally provided with a cavity, the cavity is provided with a through hole on the side close to the connecting pipe (1), a winding rod (6) is rotatably arranged in the cavity through a rolling bearing, one end of the winding rod (6) penetrates to the outside of the positioning block (2) and is provided with a locking mechanism, the connecting pipe (1) is provided with a steel wire rope (5) on the outer side of both ends, the steel wire rope (5) passes through the two through holes respectively and is fixedly connected with the two sides of the winding rod (6).
2. A precisely fitted water tank connection pipe according to claim 1, characterized in that: The locking mechanism comprises a rotating wheel (9), the lower end of the rotating wheel (9) is provided with a circular groove in the middle, the upper end of the winding rod (6) extends into the circular groove, the rod wall of the winding rod (6) is provided with a strip-shaped hole at the position inside the circular groove, a limiting rod (7) is slidably arranged in the strip-shaped hole at the lower side, the limiting rod (7) is fixedly connected with the circular groove at both ends, a spring (8) is fixedly arranged on the upper side rod wall of the limiting rod (7), two locking columns (10) are fixedly arranged at the bottom edge of the rotating wheel (9), and the upper side of the positioning block (2) is uniformly provided with a plurality of locking holes matched with the locking columns (10).
3. A precisely fitted water tank connection pipe according to claim 2, characterized in that: The side wall of the rotating wheel (9) is provided with anti-skid lines.
4. A precisely fitted water tank connection pipe according to claim 2, characterized in that: The lower end of the locking column (10) is provided with a chamfer.
5. A precisely fitted water tank connection pipe according to claim 4, characterized in that: The angle of the chamfer is 45°.
6. A precisely fitted water tank connection pipe according to claim 2, characterized in that: The upper end of the spring (8) is fixedly connected with the strip-shaped hole, and the spring (8) is always in a compressed state.