KR20070021391A - Combination structure of filler neck in radiator - Google Patents

Abstract

The present invention relates to a filler neck coupling structure of the radiator, and more particularly, by inserting the filler neck made of synthetic resin toward the outer circumferential surface side of the connecting pipe formed in the header tank and rotating the lens at a predetermined angle, thereby simplifying the coupling structure. It is easy to assemble and omit separate parts for joining, and it is possible to install synthetic resin filler neck in aluminum radiator to reduce manufacturing cost and to keep the radiator filler always constant in the direction of overflow pipe and cap. It relates to a neck coupling structure.

Accordingly, the present invention provides a plurality of tubes 111 arranged at a predetermined interval, a heat dissipation fin 112 interposed between the tubes 111, and a pair of header tanks 110 coupled to both ends of the tube 111. And a filler neck 120 which is coupled to the connection pipe 116 formed in any one of the pair of header tanks 110 to perform a passage function for replenishment / exchange of cooling water and at the same time adjust the pressure inside. In the radiator comprising a, the filler neck 120 is characterized in that the coupling means 130 is provided to be coupled by inserting to the outer peripheral surface side of the connecting pipe 116 and rotated by a predetermined angle.

Radiator, filler neck, connecting pipe, protrusion, guide groove, flow prevention part

Description

Combination structure of filler neck in radiator

1 is a perspective view showing a conventional radiator,

Figure 2 is a perspective view showing a state in which the filler neck disassembled in the radiator according to the present invention,

3 and 4 are plan views showing the coupling process of the filler neck in the radiator according to the present invention.

<Code Description of Main Parts of Drawing>

100: radiator 101: reservoir tank

102: hose

110: header tank 111: tube

112: heat sink fin 113: side support

114: inlet pipe 115: outlet pipe

116: connecting pipe 117: protrusion

120: filler neck 121: filler neck body

121a: guide groove 121b: flow preventing portion

121c: engaging jaw 122: pillar neck portion

123: overflow pipe 124: cap

125: O-ring 130: coupling means

The present invention relates to a filler neck coupling structure of the radiator, and more particularly, by inserting the filler neck made of synthetic resin toward the outer circumferential surface side of the connecting pipe formed in the header tank and rotating the lens at a predetermined angle, thereby simplifying the coupling structure. It is easy to assemble and omit separate parts for joining, and it is possible to install synthetic resin filler neck in aluminum radiator to reduce manufacturing cost and to keep the radiator filler always constant in the direction of overflow pipe and cap. It relates to a neck coupling structure.

In general, in a vehicle equipped with an internal combustion engine, heat generated during operation of the engine is conducted to a cylinder head, a piston, a valve, and the like. As a result, excessively high temperatures of these components reduce the strength of the components due to thermal expansion or deterioration, shorten the engine life, deteriorate the combustion state, cause knocking or premature ignition, and reduce engine output.

In addition, when the engine is incompletely cooled, the oil film on the inner circumferential surface of the cylinder is broken, and the lubrication function is deteriorated. As a result, the engine oil is deteriorated, which causes abnormal cylinder wear and the piston is fused to the inner wall of the cylinder. Done.

As such, in order to prevent a phenomenon caused by overheating of the engine, the vehicle is provided with a water cooling device for cooling the engine.

The water-cooled cooling device uses a water pump to circulate cooling water into a water jacket formed in a vehicle engine to cool the engine, and then circulate the cooling water to a radiator to dissipate heat of the cooling water to the outside. The radiator is cooled by air forcedly blown by a fan installed at one side thereof.

As shown in FIG. 1, the radiator 1 includes a pair of header tanks 2 and 3 spaced apart from each other and formed with a flow path therein, and a pair of header tanks 2 ( 3) a plurality of tubes (4) installed in communication with each other, and the heat dissipation fin (5) interposed between the tubes (4) to promote heat exchange with the cooling water passing through each tube (4) by increasing the heat transfer area And, it is composed of the side support (6) which is installed on the outermost so as to prevent deformation of the tube (4) and the heat radiation fin (5).

In addition, the pair of header tanks (2) (3) is provided with inlet and outlet pipes (7) (8) so that the coolant can be introduced / discharged.

In addition, any one of the pair of header tanks (2) and (3) serves as a passage function of replenishment / replacement of the coolant, and to reduce the pressure when the pressure inside the radiator 1 rises excessively. The filler neck 10 is installed to guide the movement to the reservoir tank 15.

The pillar neck 10 includes a pillar neck main body 11, a cap 12 that opens and closes an upper opening of the pillar neck main body 11, and includes a pressure valve (not shown), and the pillar neck main body. It is composed of an overflow pipe 13 coupled to the reservoir 11 and connected to the reservoir tank 15.

The pillar neck 10 may be directly coupled to the header tank 2, or may form a connection pipe 9 on one side of the header tank 2, and may be coupled to the connection pipe 9.

Therefore, the coolant circulated in the water jacket of the engine is introduced into the one side header tank 2 through the inlet pipe 7 by the action of the water pump. Subsequently, the coolant is gradually cooled while performing active heat exchange with the outside air in the course of passing through the plurality of tubes (4), and then discharged through the outlet pipe (8) of the other header tank (3) and back into the engine water jacket. Inflow.

In addition, when the cooling water in the radiator 1 is a high temperature, the cooling water expands, and the expanded cooling water flows into the reservoir tank 15 through the overflow pipe 13 of the filler neck 10, and conversely, in the radiator 1. When the coolant is at a low temperature, shrinkage occurs. At this time, the coolant in the reservoir tank 15 flows back into the radiator 1 through the overflow pipe 13 of the filler neck 10.

On the other hand, various methods have been developed for coupling the filler neck 10 to the header tank 2 side,

First, Korean Patent Publication No. 10-2002-72888 (name: aluminum radiator) is a technology of forming a filler neck made of aluminum material and fitting it to a mounting hole formed in the inlet and outlet pipes of aluminum material and then joining them through a brazing process. to be.

However, since the filler neck can be bonded through the brazing process, a filler neck made of aluminum must be used, and thus, there is a problem in that the shape of the filler neck is restricted in manufacturing.

In addition, Korean Patent Publication No. 10-2002-57008 (name: aluminum radiator) is a technology in which the filler neck is formed of a synthetic resin and screwed to the header tank.

However, the technique has a problem that the direction of the ore flow pipe is not constant as the filler neck is screwed into the header tank.

An object of the present invention for solving the above problems is to insert the synthetic resin filler neck to the outer peripheral surface side of the connecting pipe formed in the header tank and to be fixed / coupled by rotating a predetermined angle, so that the assembly structure is simple and easy to assemble. In addition to the simplicity, it is possible to omit a separate part for joining, and the resin filler neck can be installed on the aluminum radiator to reduce the manufacturing cost and to maintain the constant direction of the overflow pipe and cap. To provide.

The present invention for achieving the above object is a plurality of tubes arranged at a predetermined interval, the heat dissipation fin interposed between the tubes, a pair of header tanks coupled to both ends of the tube, the pair of header tanks In the radiator coupled to the connection pipe formed in any one of the radiator including a filler neck for adjusting the internal pressure at the same time to perform the passage function for the replacement / replacement of the cooling water, the filler neck is inserted into the outer peripheral surface side of the connection pipe And characterized in that the coupling means is provided to be coupled by rotating a predetermined angle.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Repeated description of the same construction and operation as in the prior art will be omitted.

Figure 2 is a perspective view showing an exploded state of the filler neck in the radiator according to the present invention, Figure 3 and Figure 4 is a plan view showing the coupling process of the filler neck in the radiator according to the present invention.

As shown, as long as the radiator 100 according to the present invention is provided with inlet and outlet pipes 114 and 115 so that the flow path is formed inside the outlet 100 and the coolant can be introduced / exited at a predetermined interval in parallel to each other. A plurality of tubes 114 installed in communication with the pair of header tanks 110, the pair of header tanks 110, and the respective tubes ( And a heat dissipation fin 112 for facilitating heat exchange with the coolant passing through the 114 water, and a side support 113 disposed at the outermost side thereof so as to prevent deformation of the tube 114 and the heat dissipation fin 112. .

In addition, any one of the pair of header tanks 110 performs a function of replenishing / exchanging the coolant, and also reduces the coolant when the pressure inside the radiator 100 rises excessively. Filler neck 120 is guided to move to 101.

Filler neck 120 in the present invention is coupled to the connection pipe 116 formed to communicate with one side of the header tank (110).

The filler neck 120 has a filler neck body 121 having one end opened so as to be coupled to the connection pipe 116, a filler neck part 122 formed to communicate perpendicularly to the filler neck main body 121, and the The overflow pipe 123 is formed to communicate with one side of the filler neck portion 122 and connected to the reservoir tank 101 and the hose 102, and is coupled to the upper opening of the pillar neck portion 122 and is inside the radiator 100. In order to open and close the overflow pipe 123 according to the pressure of the pressure valve (not shown) is composed of a cap 124 to adjust the pressure.

Here, the filler neck 120 is formed of a synthetic resin material except for the cap 124.

Since the operation of the filler neck 120 is the same as in the prior art, a detailed description thereof will be omitted, and the coupling structure of the filler neck 120 will be described in detail below.

Filler neck 120 according to the present invention is provided with a coupling means 130 to be coupled by inserting to the outer peripheral surface side of the connecting pipe 116 and rotated by a predetermined angle.

The coupling means 130 has a protrusion 117 formed on the outer circumferential surface of the connection pipe 116, and guides the protrusion 117 at an open end of the pillar neck body 121 in the pillar neck 120. The guide groove 121a is formed to be inserted while the filler neck 120 is rotated, and a flow preventing part is formed at one side of the guide groove 121a to prevent the flow of the filler neck 120 by being caught by the protrusion 117 when the insertion is completed. 121b is formed and formed.

Here, the guide groove 121a is formed to be curved at a predetermined length from one end of the pillar neck body 121.

Therefore, when the filler neck 120 is inserted into the outer circumferential surface of the connecting pipe 116, the filler neck 120 is curved guide groove 121a from the moment when the protrusion 117 is inserted into the guide groove 121a. Since it is inserted while being guided in the shape of will be rotated at the same time as insertion.

In addition, the flow preventing part 121b is formed to extend in the circumferential direction along the guide groove at one end of the guide groove 121a, and a locking step 121c is formed to be caught by the protrusion 117 inside. .

That is, the flow preventing part 121b has a certain elasticity as the filler neck body 121 is formed of synthetic resin, and thus, the protrusion 117 is inserted along the guide groove 121a to guide the groove 121a. The flow prevention portion 121b is elastically deformed in the outward direction as it faces the end of the), and when the protrusion 117 arrives at the end of the guide groove 121a, the flow prevention portion 121b is initially initialized by a restoring force. The locking step 121c is caught by the protrusion 117 while being restored to the position.

As such, when the protrusion 117 is inserted to the end of the guide groove 121a and is caught by the locking jaw 121c, the pillar neck 120 is prevented from flowing and thus the direction of the overflow pipe 123. You can always keep it constant.

On the other hand, it is preferable that the O-ring 125 is installed between the filler neck 120 and the connection pipe 116 to improve the sealing property.

In other words, the O-ring 125 is installed on the inner circumferential surface of the pillar neck body 121 to insert the pillar neck 120 into the connection pipe 116 when the insertion and rotation are completed. It can be pressed to the end of the pipe 116 to improve the sealing property.

Of course, after the bead (not shown) is formed on the outer circumferential surface of the connecting pipe 116, the O-ring 125 may be pressed against the bead, thereby improving the sealing property.

As described above, the filler neck coupling structure of the radiator according to the present invention, the protrusion 117 is formed on the outer circumferential surface of the connecting pipe 116 and the curved guide groove 121a and the flow prevention in the filler neck 120 By forming the portion 121b, when the filler neck 120 is inserted into the connection pipe 116, the filler neck 120 is inserted into the protrusion 117 in the shape of the curved guide groove 121a. It is inserted while rotating.

Thereafter, as the protrusion 117 faces the end of the guide groove 121a, the flow preventing portion 121b is elastically deformed in the outward direction, and the protrusion 117 reaches the end of the guide groove 121a. When the flow prevention portion 121b is restored to the initial position by the restoring force, the locking jaw 121c is caught by the protrusion 117 so that the filler neck 120 is fixed at the current position.

According to the present invention as described above, by inserting the filler neck of the synthetic resin material to the outer peripheral surface side of the connecting pipe and to be fixed / coupled by rotating a predetermined angle, the coupling structure is simple and easy to assemble and at the same time separate for coupling Parts can be omitted, and the resin filler neck can be installed in the aluminum radiator to reduce manufacturing costs and keep the overflow pipe and cap in a constant direction at all times.

Claims (5)

A plurality of tubes 111 arranged at a predetermined interval, a heat dissipation fin 112 interposed between the tubes 111, a pair of header tanks 110 coupled to both ends of the tube 111, and the Radiator coupled to the connection pipe 116 formed in any one of the pair of header tanks 110, including a filler neck 120 to adjust the pressure inside the passage function for refilling / replacing the cooling water To The filler neck 120 is a filler neck coupling structure of the radiator, characterized in that the coupling means 130 is provided to be coupled by inserting to the outer peripheral surface side of the connection pipe 116 by a predetermined angle. The method of claim 1, The coupling means 130, the protrusion 117 is formed on the outer circumferential surface of the connecting pipe 116, one end of the filler neck 120 is guided to the protrusion 117, the filler neck 120 is rotated Filler of the radiator, characterized in that the guide groove (121a) is formed to be inserted and inserted into the flow prevention portion 121b is formed on one side of the guide groove (121a) so as to prevent the flow when the insertion is completed. Neck joint structure. The method of claim 2, The flow preventing part 121b is formed to extend in the circumferential direction along the guide groove 121a at one end of the guide groove 121a, and the locking jaw 121c is formed to be caught by the protrusion 117 inside. Filler neck coupling structure of the radiator. The method of claim 2, The pillar neck 120 is formed to communicate with the pillar neck main body 121 in which the guide groove 121a and the flow preventing part 121b are formed at one end thereof, and perpendicular to the pillar neck main body 121. Filler neck portion 122, the overflow pipe 123 is formed in communication with one side of the filler neck portion 122, coupled to the upper opening of the filler neck portion 122 and over in accordance with the pressure inside the radiator 100 Filler neck coupling structure of the radiator, characterized in that consisting of a cap 124 to adjust the pressure by opening and closing the flow pipe (123). The method of claim 1, Filler neck coupling structure of the radiator, characterized in that the O-ring 125 is installed between the filler neck 120 and the connecting pipe 116.

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