JP7446561B2 - vehicle radiator - Google Patents

Description

The present invention relates to a vehicular radiator, and particularly to a vehicular radiator in which two radiators are arranged one above the other.

Conventionally, vehicles have a high water temperature radiator that cools coolant to cool high temperature parts such as the engine, and a low water temperature radiator that cools coolant that cools low temperature parts such as intercoolers and electrical components whose temperature is lower than the high temperature parts. A water temperature radiator may be installed.

A high water temperature radiator and a low water temperature radiator are placed in front of the engine in order to promote heat exchange between the running air taken in from the front and the coolant, with one placed on top of the other as in Patent Document 1, for example. will be placed. In addition, a condenser for heat exchange between the running wind and the air conditioner refrigerant is installed in front of the high water temperature radiator and the low water temperature radiator.

Furthermore, a grille shutter may be provided in front of the condenser to reduce air resistance during driving. Furthermore, a radiator fan and a fan shroud that supports the radiator fan are disposed behind the high water temperature radiator and the low water temperature radiator.

The high water temperature radiator and the low water temperature radiator are connected to an inlet pipe that introduces the coolant whose temperature has increased, and an outlet pipe that sends out the coolant whose temperature has been lowered by the running wind to various parts. Therefore, it is not easy to arrange parts such as a high water temperature radiator, a low water temperature radiator, a capacitor, etc., and piping, wiring, etc. connected to these parts without interfering with each other in the limited space in front of the engine.

JP2019-203625A

The high water temperature radiator and the low water temperature radiator are each provided with a discharge portion for discharging the coolant, for example, for exchanging the coolant. In order to discharge the coolant using gravity, coolant discharge portions are provided at the lower part of the high water temperature radiator and the lower part of the low water temperature radiator, respectively. However, when one is placed on top of the other as in Patent Document 1, it is possible to operate the discharge part of the lower radiator from the bottom of the vehicle to discharge coolant, but the upper radiator The exhaust part is located above the lower radiator and cannot be easily accessed.

Therefore, it is conceivable to provide a drain passage that extends the discharge part of the upper radiator in the form of a passage from the underside of the vehicle to a position where it can be easily operated. However, it is difficult to provide a drain passage in the limited space in front of the engine while avoiding interference with other parts.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicular radiator that allows easy operation of the discharge section and has a drain passage that does not interfere with other parts.

A vehicular radiator according to the invention of claim 1 is a vehicular radiator in which a lower radiator having a second side tank is disposed below an upper radiator having a first side tank, wherein the second side tank is a discharge portion including a protruding pin portion on the bottom for attaching a radiator mount, and a drain passage in the second side tank that communicates from the first side tank to the protruding pin portion ; The second side tank is formed by resin molding, and the drain passage is formed by a partition wall that partitions the inside of the second side tank .

According to the above configuration, the discharge section can be easily operated from the lower side of the vehicle, so that the burden of maintenance work for discharging the coolant from the upper radiator is reduced. Further, since the drain passage of the vehicle radiator is not projected to the outside of the vehicle radiator, the vehicle radiator does not become large and can be easily mounted on the vehicle.

Further, since the drain passage is formed by the partition wall that partitions the inside of the second side tank, when molding the second side tank of the lower radiator with resin, the drain passage can be easily formed by the partition wall. be able to.

A vehicle radiator according to a second aspect of the present invention is characterized in that, in the first aspect of the present invention, a drain plug that can be attached and detached from below is attached to the protruding pin portion.
According to the above configuration, the drain plug attached to the protruding pin portion can be easily operated from below the vehicle, so that the burden of maintenance work for draining the coolant from the upper radiator 15 is reduced.

According to the vehicle radiator of the present invention, the discharge part can be easily operated and the radiator has a drain passage that does not interfere with other parts, so that maintenance is improved and it is easy to install it in a vehicle.

1 is a front view of a vehicular radiator according to an embodiment of the present invention. FIG. 1 is a bottom view of a vehicle radiator according to an embodiment of the present invention. FIG. 3 is a sectional view of a main part taken along line III-III in FIG. 2; FIG. 4 is an exploded perspective view of a main part of the drain passage in FIG. 3; FIG. 2 is a sectional view of a main part taken along line VV in FIG. 1; FIG. 2 is a sectional view of a main part of a drain passage formed of a pipe member.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated. The following description of preferred embodiments is merely exemplary in nature and is not intended to limit the invention, its applications, or its uses.

As shown in FIGS. 1 to 3, a radiator 1 (vehicle radiator) is supported by a pair of brackets 3 fixed to a cross member 2 in front of an engine so as to project forward. It is fixed to a shroud upper member 4 extending in the vehicle width direction by a fixture 5. The cross member 2 connects the distal ends of a pair of left and right suspension frames 6. Note that arrow F, arrow L, and arrow U in the figure indicate the front, left, and upper sides of the vehicle, respectively.

An upper cover 7 and a lower cover 8 are attached to the upper and lower surfaces of the radiator 1. A fan shroud 9 that supports a radiator fan is attached to the rear side of the radiator 1 (see FIG. 6). Furthermore, an injection port for pouring coolant into the radiator 1 is provided on the rear side of the radiator 1, and a radiator cap 20 is attached to this injection port.

A pair of cylindrical protruding pin parts 11a and 11b protruding downward are provided at the bottom of both left and right ends of the radiator 1. A cylindrical mount member 12 (radiator mount) made of, for example, synthetic rubber is fitted onto the pair of protruding pin portions 11a and 11b, respectively. The mount member 12 has a large diameter part 12a having a tapered part and a large outer diameter, and a small diameter part 12b having a smaller outer diameter than the large diameter part 12a. covered.

The lower surface of the pair of brackets 3 is provided with an insertion hole large enough to allow the tips of the protruding pin parts 11a and 11b covered by the small diameter part 12b to be inserted therethrough, but not large enough to allow the large diameter part 12 to be inserted therethrough. It is being By fixing the radiator 1 to the shroud upper member 4 with the tips of the protruding pin parts 11a and 11b covered by the small diameter part 12b inserted into these insertion holes, the radiator 1 can be moved in the front-rear direction, left-right direction, Movement in the vertical direction is restricted. The mount member 12 absorbs shocks and vibrations transmitted to the radiator 1 during driving.

Next, the structure of the radiator 1 will be explained.
The radiator 1 includes a high water temperature radiator that cools a coolant that cools high temperature parts such as an engine, and a low water temperature radiator that cools a coolant that cools low temperature parts such as an intercooler and electrical components that are cooler than the high temperature parts. Although the low water temperature radiator is arranged as the lower radiator 16 under the high water temperature radiator as the upper radiator 15, the arrangement may be reversed.

The upper radiator 15 has a core part 15a that exchanges heat between the cooling fluid and the running wind, and side tanks 15b and 15c provided on both left and right sides of the core part 15a. Similarly, the lower radiator 16 has a core portion 16a and side tanks 16b and 16c on both left and right sides of the core portion 16a. Although not shown, the core parts 15a and 16a are cross-flow heat exchangers having a plurality of coolant passages extending left and right and a plurality of fins in contact with the plurality of coolant passages.

Pipe connection ports are formed in the side tanks 15b, 15c of the upper radiator 15 and the side tanks 16b, 16c of the lower radiator 16, respectively. For example, the side tanks 16b and 16c of the lower radiator 16 each have a piping connection port 16d on the front and rear surfaces, and the side tanks 15b and 15c of the upper radiator 15 each have a piping connection port 15d on the rear surface. We are prepared. Further, a plurality of component attachment portions 17 for fixing other components are formed in the side tanks 15b, 15c, 16b, and 16c.

A cooling liquid introduction pipe is connected to a pipe connection port 15d of one of the side tanks 15b, 15c, and a cooling liquid outlet pipe is connected to a pipe connection port 15d of the other tank. The coolant introduced from the introduction pipe is distributed to a plurality of coolant passages in the core portion 15a, and the cooled liquid that passes through the plurality of coolant passages is combined and supplied to the outlet pipe. The same applies to the side tanks 16b and 16c of the lower radiator 16.

As shown in FIG. 3, the coolant discharge part 25a of the lower radiator 16 is formed by communicating the inside of the left side tank 16b and the inside of the protruding pin part 11a. A drain plug 24 that can be attached and detached by operating from below is attached to this protruding pin portion 11a.

As shown in FIGS. 3 to 5, the coolant discharge part 25b of the upper radiator 15 is connected from the bottom of the right side tank 15c (first side tank) to the right side of the lower radiator 16 by the drain passage 21. It passes through the inside of the side tank 16c (second side tank) and is formed to communicate with the right protruding pin portion 11b. A drain plug 24 that can be attached and detached by operating from below is also attached to this right protruding pin portion 11b.

The side tank 15c and the side tank 16c are integrally formed with the protruding pin part 11b by, for example, resin molding, and are divided into the side tank 15c and the side tank 16c by partition walls 15f and 16f that partition the inside. ing. Similarly, the left side tanks 15b and 16b are integrally formed with the protruding pin portion 11a by, for example, resin molding, and are divided into a side tank 15b and a side tank 16b by partition walls 15e and 16e that partition the inside. It is being

The drain passage 21 is formed by a partition wall 16g having a substantially U-shaped horizontal section, for example, which partitions the inside of the side tank 16c. For example, a recessed part surrounded by a partition wall 16g formed by extending a part of the side wall of the side tank 16c into the side tank 16c is made to communicate with the inside of the side tank 15c and the protruding pin part 11b. The drain passage 21 is formed by welding the side wall member 16h that closes the recess.

Furthermore, instead of the drain passage 21, the drain passage 22 may be formed by a pipe member 22a extending from the bottom of the side tank 15c into the side tank 16c and communicating with the protruding pin portion 11b, as shown in FIG. You can also do it. The tube member 22a is integrally formed with, for example, the protruding pin portion 11b, and is inserted and fixed into the side tank 16c so as to communicate with the side tank 15c.

The functions and effects of the radiator 1 of the above embodiment will be explained.
The radiator 1 (vehicle radiator) includes a lower radiator 16 having a side tank 16c (second side tank) arranged below an upper radiator 15 having a side tank 15c (first side tank). It is formed. The bottom of the side tank 16c is provided with a cylindrical protruding pin portion 11b for mounting the mount member 12 (radiator mount). The coolant discharge part 25b has a drain passage 21 in the side tank 16c that communicates from the side tank 15c to the protruding pin part 11b. A drain plug 24 that can be attached and detached by operating from below is attached to the protruding pin portion 11b.

The tip of the protruding pin portion 11b is inserted into the insertion hole of the bracket 3 that supports the radiator 1, and the drain plug 24 attached to the protruding pin portion 11b with which the drain passage 21 communicates from the bottom of the vehicle can be easily operated. Can be done. Therefore, the burden of maintenance work for draining the coolant from the upper radiator 15 is reduced.

Further, since the drain passage 21 of the radiator 1 is not projected to the outside of the radiator 1, the drain passage 21 does not interfere with other parts, and the radiator 1 does not become large, so it is easy to mount it on a vehicle.

The side tank 16c is formed by resin molding, and the drain passage 21 is formed by a partition wall 16f that partitions the inside of the side tank 16c. Therefore, when molding the side tank 16c of the lower radiator 16 with resin, the drain passage 21 can be easily formed by the partition wall 16f.

Further, instead of the drain passage 21, the drain passage 22 can be formed by a pipe member 22a extending from the bottom of the side tank 15 and communicating with the inside of the protruding pin portion 11b. The drain passage 22 can be formed while avoiding interference with the component attachment portion 17 provided on the side tank 16c for attaching other components to the radiator 1.

The drain passage 22 may be formed by molding the tube member 22a separately from the protruding pin portion 11b and installing the tube member 22a so as to communicate from the inside of the protruding pin portion 11b into the side tank 15c. Further, a drain passage may be provided in the left side tank 16b, and a discharge portion for the coolant of the lower radiator 16 may be provided in the right side tank 16c. In addition, those skilled in the art can implement various modifications to the above embodiments without departing from the spirit of the present invention, and the present invention includes such modifications.

1: Radiator 2: Cross member 3: Bracket 11a, 11b: Projecting pin portion 12: Mount member (radiator mount)
15: Upper radiator 15a: Core portion 15b, 15c: Side tank 15d: Piping connection port 15e, 15f: Partition wall 16: Lower radiator 16a: Core portion 16b, 16c: Side tank 16d: Piping connection port 16e, 16f , 16g: Division wall 16h: Side wall members 21, 22: Drain passage 22a: Pipe member 24: Drain plugs 25a, 25b: Discharge section

Claims (2)

In a vehicle radiator in which a lower radiator having a second side tank is disposed below an upper radiator having a first side tank,
a protruding pin portion for mounting a radiator mount on the bottom of the second side tank;
a discharge part including a drain passage in the second side tank that communicates from the inside of the first side tank to the inside of the protruding pin part;
A radiator for a vehicle , wherein the second side tank is formed by resin molding, and the drain passage is formed by a partition wall that partitions the inside of the second side tank . 2. The vehicle radiator according to claim 1 , wherein a drain plug that can be attached and detached from below is attached to the protruding pin portion .