CN212616929U - Pipeline connecting joint for automobile cooling system - Google Patents

Abstract

The utility model provides a pipeline connecting joint for an automobile cooling system, belonging to the technical field of joints, comprising a core pipe, a hose sleeved on the core pipe and a heat-shrinkable ring sleeved on the hose, wherein the core pipe is also provided with an annular bulge; the inner wall of the hose is tightly abutted with the annular bulge under the fastening of the heat-shrinkable ring so as to realize the sealing connection of the core pipe and the hose; the front end of the core tube is provided with a bulge part, and the front end of the bulge part is provided with a guide surface; the annular bulges are provided with a plurality of annular bulges and are distributed on the core pipe at intervals along the axial direction of the core pipe; the core pipe is further provided with a limiting ring, and the limiting ring is located behind the annular protrusion and used for being abutted to the corresponding end face of the hose. The utility model provides a pipeline attach fitting leakproofness for automobile cooling system is good, can be in the fluid temperature be-40 ℃ -150 ℃, does not take place to leak and have advantages such as with low costs, equipment low in labor strength, excellent performance, lightweight, can realize batch automated production simultaneously.

Description

Pipeline connecting joint for automobile cooling system

Technical Field

The utility model belongs to the technical field of connect, more specifically say, relate to a tube coupling joint for automobile cooling system.

Background

The primary operation of an automotive cooling system is to dissipate heat into the air to prevent overheating of the engine. Another important function of an automotive cooling system is to warm up the engine as quickly as possible and keep it at a constant temperature. The automobile cooling system comprises a soft core pipe assembly, and the soft core pipe joint is a key part of the soft core pipe assembly and is used for connecting two sections of pipelines for low-temperature or high-temperature fluid to pass through.

In the process of implementing the present invention, the inventor finds that there are at least the following problems in the prior art: at present, the joint is fastened by a clamp and a snap ring, the cost is high, and the leakage is easy to occur when the fluid temperature is between 40 ℃ below zero and 30 ℃ below zero.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a tube coupling connects for car cooling system aims at solving present joint and adopts clamp, snap ring fastening more, and the cost is higher, easily takes place the technical problem of seepage when the fluid temperature is in-40-/-30 ℃ simultaneously.

In one aspect, a pipe coupling joint for an automotive cooling system is provided, including:

the heat-shrinkable tube comprises a core tube, a hose sleeved on the core tube and a heat-shrinkable ring sleeved on the hose, wherein the core tube is also provided with an annular bulge;

the inner wall of the hose is tightly abutted to the annular bulge under the fastening of the heat-shrinkable ring, so that the core pipe is hermetically connected with the hose.

Furthermore, the front end of the core tube is provided with a protruding part, and the front end of the protruding part is provided with a guide surface.

Furthermore, the annular bulges are provided with a plurality of annular bulges and are distributed on the core tube at intervals along the axial direction of the core tube.

Furthermore, a limiting ring is further arranged on the core pipe, and the limiting ring is located behind the annular protrusion and used for being abutted to the corresponding end face of the hose.

Further, the limiting ring, the annular protrusion, the protrusion and the core tube are integrally formed.

Further, the heat-shrinkable ring is located on a portion of the hose that contacts the annular projection.

Further, the width of the heat-shrinkable ring is consistent with the width of an assembly formed by combining a plurality of annular protrusions.

Further, the core pipe is a nylon pipe.

Further, the hose is a rubber tube.

One of the above technical solutions has the following beneficial effects: compared with the prior art, the fixed mode that the hose and the core pipe are fastened through the hoop or the snap ring after being sleeved is changed, and the heat-shrinkable ring is adopted to fasten the assembly of the hose and the core pipe after being sleeved. The inner parts and unsealed positions of the core tube and the hose are used as fluid channels, and tests show that the pipeline connecting joint for the automobile cooling system provided by the embodiment is applied to a phi 5-phi 50 standard water-cooling tube connecting structure, and fluid at the temperature of minus 40-150 ℃ is introduced without leakage. Therefore, the pipeline connecting joint for the automobile cooling system provided by the embodiment has good sealing performance, and can not leak in the range of the fluid temperature of-40-150 ℃. Meanwhile, the embodiment of the utility model provides a pipeline attach fitting for automobile cooling system still has advantages such as with low costs, low in labor strength, excellent performance, lightweight, can realize batch automated production simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic vertical sectional view of a pipe joint for an automobile cooling system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a core tube according to an embodiment of the present invention.

In the figure: 100. a core tube; 200. a hose; 300. a heat-shrinkable ring; 400. an annular projection; 500. a boss portion; 600. a limit ring.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and fig. 2, a pipeline connecting joint for an automobile cooling system according to an embodiment of the present invention will now be described. The pipeline connecting joint for the automobile cooling system comprises a core pipe 100, a hose 200 sleeved on the core pipe 100 and a heat-shrinkable ring 300 sleeved on the hose 200, wherein the core pipe 100 is further provided with an annular bulge 400. The inner wall of the hose 200 is tightly abutted with the annular protrusion 400 under the fastening of the heat-shrinkable ring 300 to realize the sealing connection of the core tube 100 and the hose 200.

During assembly, the front end of the core tube 100 is inserted into the rear end of the hose 200 until the annular protrusion 400 completely enters the hose 200, the heat-shrinkable ring 300 is sleeved on the hose 200 and moved to a specified position (a certain distance away from the rear end face of the hose 200), and then the heat-shrinkable ring 300 is heated and pressurized by using a special tool, so that the heat-shrinkable ring 300 can fasten the assembly of the hose 200 and the core tube 100.

The embodiment of the utility model provides a pipeline attach fitting for automobile cooling system compares with prior art, has changed the inherent mode that hose 200 and core pipe 100 cup jointed the back and fasten through clamp or snap ring, adopts pyrocondensation ring 300 to fasten the sub-assembly after hose 200 and core pipe 100 cup jointed. The inner parts and unsealed positions of the core tube 100 and the hose 200 are used as fluid channels, and tests show that the pipeline connecting joint for the automobile cooling system provided by the embodiment is applied to a phi 5-phi 50 standard water-cooling tube connecting structure, and fluid with the temperature of minus 40-150 ℃ is introduced without leakage. Therefore, the pipeline connecting joint for the automobile cooling system provided by the embodiment has good sealing performance, and can not leak in the range of the fluid temperature of-40-150 ℃. Meanwhile, the embodiment of the utility model provides a pipeline attach fitting for automobile cooling system still has advantages such as with low costs, low in labor strength, excellent performance, lightweight, can realize batch automated production simultaneously.

In order to facilitate the smooth and fast insertion of the core tube 100 into the hose 200, as a specific embodiment of the pipe connection joint for the automobile cooling system provided by the present invention, the front end of the core tube 100 is provided with a protrusion 500, please refer to fig. 1 and 2, the front end of the protrusion 500 is provided with a guide surface. Wherein the guide surface is provided to facilitate insertion of the core tube 100 into the hose 200. The provision of the protruding portion 500 reduces the risk of the core tube 100 being pulled out of the hose 200 after being inserted into the hose 200, and the protruding portion 500 and the annular protrusion 400 are both tightly fitted to the inner wall of the hose 200 to form an effective sealing joint.

Further, the protrusion 500 is annular, and the guide surface is a tapered surface with a small front and a large rear. The width of the projection 500 in the axial direction of the core tube 100 is larger than the width of the annular projection 400 in the axial direction of the core tube 100.

One or more of the annular projections 400 may be provided, and when a plurality of the annular projections 400 are provided, referring to fig. 1 and 2, the plurality of the annular projections 400 are spaced apart from each other in the axial direction of the core tube 100. The plurality of annular protrusions 400 effectively ensure that the frictional force between the core tube 100 and the hose 200 is sufficiently large, thereby ensuring the sealability between the hose 200 and the core tube 100.

After the front end of the core tube 100 is inserted into the rear end of the hose 200, the annular protrusion 400 on the core tube 100 is shielded by the wall of the hose 200, so that an operator cannot accurately judge whether the length of the core tube 100 inserted into the hose 200 meets the requirement. Referring to fig. 1 and 2, the core tube 100 is further provided with a limiting ring 600, and the limiting ring 600 is located behind the annular protrusion 400 and is used for abutting against a corresponding end surface of the hose 200.

During assembly, the front end of the core tube 100 is inserted into the rear end of the hose 200 until the rear end surface of the hose 200 abuts against the annular wall of the retainer ring 600. The arrangement of the limiting ring 600 limits the maximum length of the core tube 100 inserted into the hose 200, ensures the assembly consistency of different hose 200 and core tube 100 assemblies, and is convenient for an operator to determine whether the action area of the heat-shrinkable ring 300 is consistent with the position of the annular bulge 400, thereby ensuring the sealing performance of a pipeline connecting joint for an automobile cooling system.

In order to ensure the stability and the convenience of the production of the pipe joint structure for the cooling system of the automobile in the above embodiments, please refer to fig. 1 and fig. 2, as a specific embodiment of the pipe joint structure for the cooling system of the automobile of the present invention, the limiting ring 600, the annular protrusion 400, the protruding portion 500 and the core pipe 100 are integrally formed.

In order to ensure that the action area of the heat-shrinkable ring 300 is consistent with that of the annular bulge 400, the good sealing performance of the pipeline connecting joint for the automobile cooling system is further ensured. In the present embodiment, referring to fig. 1, a heat shrinkable ring 300 is located on the portion of the flexible tube 200 contacting the annular protrusion 400.

Further, referring to fig. 1, the width of the heat-shrinkable ring 300 is consistent with the width of the assembly formed by combining the plurality of annular protrusions 400. Therefore, material waste caused by the fact that the thermal shrinkage ring 300 is too wide is avoided, and good sealing performance of the pipeline connecting joint for the automobile cooling system is guaranteed.

Referring to fig. 1, as a specific embodiment of the pipe joint for an automobile cooling system according to the present invention, a core pipe 100 is a nylon pipe.

The nylon tube has the characteristics of wear resistance, smooth surface, resistance reduction, rust and scale deposition prevention, softness, flexibility, convenience in installation, simplicity in processing, resistance to corrosion of a plurality of chemical substances, stable size, small permeability, extremely high resistance and the like, can be used as an insulator, has long service life, even decades of years and good temperature resistance, and can work in an environment of-40-100 ℃. The core tube 100 is made of a nylon tube, and meets the use requirement of a pipeline connecting joint for an automobile cooling system.

Further, the stop collar 600, the annular protrusion 400, and the protrusion 500 are integrally injection molded with the core tube 100.

Referring to fig. 1, as a specific embodiment of the pipe joint for an automobile cooling system according to the present invention, a hose 200 is a rubber pipe.

The rubber tube has the performances of physiological inertia, ultraviolet resistance, ozone resistance, high and low temperature resistance (-80 to 300 ℃), high transparency, strong resilience, compression permanent deformation resistance, oil resistance, stamping resistance, acid and alkali resistance, wear resistance, flame retardancy, voltage resistance, electric conduction and the like. The rubber tube is adopted as the hose 200, which meets the use requirement of the pipeline connecting joint for the automobile cooling system.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. A tube coupling connects for car cooling system, its characterized in that: the heat-shrinkable tube comprises a core tube, a hose sleeved on the core tube and a heat-shrinkable ring sleeved on the hose, wherein the core tube is also provided with an annular bulge; the inner wall of the hose is tightly abutted to the annular bulge under the fastening of the heat-shrinkable ring, so that the core pipe is hermetically connected with the hose.

2. A pipe joint for a cooling system of an automobile according to claim 1, wherein: the front end of the core pipe is provided with a protruding part, and the front end of the protruding part is provided with a guide surface.

3. A pipe joint for a cooling system of an automobile according to claim 2, wherein: the annular bulges are arranged in a plurality of numbers and are distributed on the core pipe at intervals along the axial direction of the core pipe.

4. A pipe joint for a cooling system of an automobile according to claim 3, wherein: the core pipe is further provided with a limiting ring, and the limiting ring is located behind the annular protrusion and used for being abutted to the corresponding end face of the hose.

5. A pipe joint for a cooling system of an automobile according to claim 4, wherein: the limiting ring, the annular bulge, the bulge and the core pipe are integrally formed.

6. A pipe joint for a cooling system of an automobile according to claim 4, wherein: the heat-shrinkable ring is located on a portion of the hose that contacts the annular projection.

7. A pipe joint for a cooling system of an automobile according to claim 6, wherein: the width of the heat-shrinkable ring is consistent with the width of an assembly formed by combining the annular bulges.

8. A pipe joint for a cooling system of an automobile according to any one of claims 1 to 7, wherein: the core pipe is a nylon pipe.

9. A pipe joint for a cooling system of an automobile according to any one of claims 1 to 7, wherein: the hose is a rubber tube.

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