JPH07243326A - Mounting structure of radiator reserve tank for internal combustion engine - Google Patents

Abstract

PURPOSE:To provide supporting stricture having high mounting capability and high vibration resistance in reserve tank supporting structure. CONSTITUTION:A first supporting member 6 having a fitting hole 7, a second supporting member 5 having a reverse wedge-shaped part 20 recessed in a reverse wedge-shape, and a third supporting member 8 having a fitting part 9 are formed in a fan shroud 2. An inserting part 22 capable of inserting into the fitting hole 7, a wedge-shaped inserting part 20 capable of inserting into the reverse wedge-shaped part, and a locking part 23 capable of inserting into the fitting part 9 are formed in a reserve tank 1. When the inserting part 22 is inserted into the fitting hole 7, the wedge-shaped inserting part 20 into the reverse wedge-shaped part, and the locking part 23 into the fitting part 9, the reserve tank 1 is fixed to the fan shroud 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiator reserve tank mounting structure for an internal combustion engine.

[0002]

2. Description of the Related Art Conventionally, as a structure for mounting a reserve tank of a radiator for an internal combustion engine without using a bracket,
Some are described in JP-A-58-167818. This reserve tank is shown in FIG. A resin tank 102 is provided at a side end portion of a core 101 of the radiator 100, and a vehicle body mounting bracket 103 is integrally projected laterally to the resin tank 102 and is opened upward toward an inner side of the vehicle body. The engaging portion 105 having the fitting hole 104 formed therein is integrally formed so as to project. On the other hand, the reserve tank 106 is formed with a downward hook-shaped engaging portion 107 that fits and engages with the fitting hole 104 of the locking portion 105 from above to support the reserve tank 106. And
As shown in FIG. 8, the reserve tank 6 and the radiator 4 are supported by fitting and engaging the engaging portion 107 in the fitting hole 104 of the locking portion 105 in the direction of the alternate long and short dash line.

Further, as shown in FIG. 9, there is one in which the reserve tank 1 is attached using a bracket 65. The reserve tank 1 includes an insertion portion 62 that is formed downward at the bottom of the reserve tank 1. Further, the fan shroud 2 is formed with a fitting portion 61 having a through hole 63, and the insertion portion 22 is fitted into the fitting portion 61. Then, the radiator 65 and the reserve tank 1 are fixed with bolts 67 and 68 via a bracket 66.

[0004]

However, in the support structure of the reserve tank 106 and the radiator 100 shown in FIG. 8, only the engaging portion 61 and the fitting portion 51 are fitted, so that the vehicle travels. There is a problem in that the engaging portion 61 comes out of the fitting hole 51 because it is weak against the vibration caused by the vibration, especially in the vertical direction.

Further, in the support structure of the reserve tank 1 shown in FIG. 9, since the insertion portion 62 and the bolt 68 support the reserve tank 1 at two points, the reserve tank 1 is not supported by the vibration generated by the operation of the engine or the movement of the vehicle. There is a problem in that the bolt 68 is loosened by vibrating in an arc direction (direction indicated by an arrow G in FIG. 9) about the insertion portion 62 and the bolt 68 as an axis.

In view of the above problems, it is an object of the present invention to provide a support structure for a reserve tank that is strong in vibration resistance.

[0007]

The fan includes a radiator for cooling engine cooling water, a fan shroud provided on a side surface of the radiator for guiding cooling air of the radiator, and a reserve tank for storing the cooling water. A first support member that is formed on either the shroud or the reserve tank and has a fitting hole, and a reverse wedge shape that is formed on either the fan shroud or the reserve tank and is recessed into a reverse wedge shape. A second support member having a portion, provided on either the fan shroud or the radiator, and having a third support member having a fitting portion, and formed on the other of the fan shroud or the reserve tank, 1 Insertion part that can be inserted into the fitting hole of the support member, and the fan shroud or the reser Is formed on the other of the tank,
It has a wedge-shaped insertion portion that can be inserted into the inverted wedge-shaped portion of the second support member, and an engagement portion that is formed in the reserve tank and that can be inserted into the fitting portion of the third support member. And the insertion direction of the fitting hole and the insertion portion, the insertion direction of the reverse wedge-shaped portion and the wedge-shaped insertion portion, and the insertion direction of the fitting portion and the engagement portion The fact that and are in agreement is adopted as a technical means.

[0008]

According to the structure of the present invention described above, the first support member having the fitting hole is formed in either the fan shroud or the reserve tank. Then, a second support member having an inverted wedge-shaped recessed inverted wedge-shaped portion is formed on either the fan shroud or the reserve tank. Then, a third support member having a fitting portion is provided on either the fan shroud or the radiator. Then, an insertion portion that can be inserted into the fitting hole is formed in either the fan shroud or the reserve tank. A wedge-shaped insertion portion that can be inserted into the inverted wedge-shaped portion and an engagement portion that can be inserted into the fitting portion are formed on either the fan shroud or the reserve tank.
Further, since the engaging portion which can be inserted into the fitting portion is formed in the reserve tank, the insertion portion is formed in the fitting hole, the wedge-shaped insertion portion is formed in the reverse wedge-shaped portion, and the fitting portion is formed in the engagement portion. In the state in which is inserted and fixed to the reserve tank, the movement of the reserve tank in the vertical and horizontal directions is restricted by the vibration applied to the reserve tank. Further, the insertion direction of the fitting hole and the insertion portion, the insertion direction of the inverted wedge-shaped portion and the wedge-shaped insertion portion, and the insertion direction of the fitting portion and the engagement portion are the same. The installation becomes easy because

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 4 show a mounting structure of a radiator reserve tank for an internal combustion engine according to a first embodiment of the present invention. FIG. 1 shows a front view in which the reserve tank 1 is attached to the fan shroud 2.

FIG. 2 shows a top view of FIG. 1 as seen from the direction of arrow B. A radiator 38 that cools the engine cooling water of the vehicle running engine is arranged on the back side of the plane of FIG. 1 (see FIG. 2). The reserve tank 1 stores this cooling water and compensates for the increase or decrease due to the thermal expansion of the cooling water. The fan shroud 2 accommodates a fan (not shown) so that the outer edge of the fan and the inner surface of the cylindrical wall portion 3 face each other, and the airflow generated by the fan is favorably passed through the radiator to be sucked.

The fan shroud 2 is made of a resin material such as polypropylene, and has a cylindrical wall portion 3 formed along the outer diameter of the fan and a cylindrical wall portion 3 extending from the cylindrical wall portion 3 toward the radiator. The wind guide wall 4 has a trumpet shape whose inner diameter increases. The cylindrical wall portion 3 includes a second support member 5 and a first support member 6 which will be described later,
The wind guide wall 4 has a third support member 8.

Further, the reserve tank 1 is formed by blow molding using a resin material such as polypropylene. And the reserve tank 1 is the fan shroud 2
In the state where the fan shroud 2 is attached to the fan shroud 2, the inner diameter of the fan shroud 2 is reduced and the inner diameter is reduced. Also, reserve tank 1
Is provided with an insertion portion 22 described later and a wedge-shaped insertion portion 20 described later on the mold parting line which is a characteristic of the blow molded product, and an engagement portion 23 described later on the side surface 34 of the reserve tank 1. ing.

A second support member 5 is integrally formed on the outer peripheral upper portion of the cylindrical wall portion 3 of the fan shroud 2 in the upward direction. The second support member 5 is formed with an inverted wedge-shaped portion 21 having a reverse wedge-shaped cross section from one end to the other end in the standing direction of the second support member 5. Then, a wedge-shaped insertion portion 20 of the reserve tank 1 described later can be inserted into the inverted wedge-shaped portion 21.

A first support member 6 is integrally formed on the outer peripheral side of the cylindrical wall portion 3 of the fan shroud 2. And
The upper surface of the first support member 6 is substantially horizontal when mounted on a vehicle, and a rectangular fitting hole 7 is formed through the first support member 6, and the fitting hole 7 is reserved. The insertion portion 22 of the tank 1 described later can be inserted. A third support member 8 is integrally formed on the upper surface of the air guide wall 4 of the fan shroud 2. Then, a rectangular fitting portion 9 is formed in the third support member 8 so as to penetrate the third support member 8.
The fitting portion 9 is formed in a substantially horizontal direction when mounted on a vehicle, and an engaging portion 23 described later can be inserted therein. Note that the formation position of the third support member 8 having the fitting portion 9 can be made close to the inverted wedge-shaped portion 21 to obtain strong vibration resistance.

The wedge-shaped insertion portion 20 is integrally formed with the reserve tank 1 in the form of a parting line, and has a wedge-shaped shape that spreads outward as shown in FIG. As shown in FIG. 2, the wedge-shaped insertion portion 20 and the inverted wedge-shaped portion 21 have substantially the same shape area. FIG. 3 shows an enlarged view of the H portion shown in FIG.
As shown in FIG. 3, the insertion portion 22 includes a neck portion 25 formed below the bottom outer wall 10 of the reserve tank 1 and a pair of insertion leg portions 2 protruding downward from the vertical neck portion 25.
4 and. Then, the insertion leg portion 24 is connected to the neck portion 25.
The first inclined portion 2 which is branched from and is inclined so as to be distant from each other
6 and a second inclined portion 27 inclined so as to approach each other from the corner portion 33 at the lower end of the first inclined portion 26 toward the tip 29 of the insertion leg portion 24. The insertion portion 22 has a U-shaped slit 28 on the inner surface of the insertion leg portion 24, so that the tips 29 of the insertion leg portion 24 can be deformed so as to approach each other.

The distance between the corners 33 of the insertion leg 24 is slightly larger than the inner diameter of the fitting hole 7, and the width of the neck 25 is slightly smaller than the inner diameter of the fitting hole 7. By inserting the insertion portion 22 into the fitting hole 7 formed in the first support member 6, the bottom outer wall 10 of the reserve tank 1 is inserted into the first support member 6.
Abuts on the upper end surface 18 of the. The fitting state of the third supporting member 8 and the engaging portion 23 will be described based on FIG.

The engaging portion 23 is a side surface 3 of the reserve tank 1.
4, the engaging portion 23 is attached to the reserve tank 1 and the fan shroud 2,
It is provided at a position facing the fitting portion 9. The engaging portion 23 protrudes in the thickness direction of the side surface 34 and has a trapezoidal cross-sectional shape as shown in FIG. 4, and is parallel to the upper surface portion 11 of the reserve tank 1 (substantially horizontal when the vehicle is mounted). ) Contact surface 31, a vertical surface 35 formed in the vertical direction, and an inclined surface 32 inclined downward from the vertical surface 35.

Hereinafter, a method of mounting the reserve tank 1 and the fan shroud 2 will be specifically described. First, the wedge-shaped insertion portion 20 is inserted into the inverted wedge-shaped portion 21 from the direction B (vertical direction when mounted on the vehicle) shown in FIG. At this time, the inverted wedge-shaped portion 21 of the fan shroud 2 and the wedge-shaped insertion portion 20 of the reserve tank 1 are fitted to each other, so that the insertion portion 22
Serves as a guide when the engaging portion 23 is inserted into the fitting hole 7 and the engaging portion 23 is inserted into the fitting portion 9. As a result, when the reserve tank 1 is attached to the fan shroud 2, the insertion portion 22 and the fitting hole 7 are attached.
There is no need to position and the engaging portion 23 and the fitting portion 9.

When the wedge-shaped insertion portion 20 is further inserted into the inverted wedge-shaped portion 21, the second inclined portion 27 of the insertion portion 22 comes into contact with the vicinity of the entrance of the fitting hole 7 (see FIG. 3). . Along with this, the lowermost part of the inclined surface 32 of the engaging portion 23 contacts the corner portion 12 of the third supporting member 8 (see FIG. 4). Further, when the wedge-shaped insertion portion 20 is inserted into the inverted wedge-shaped portion 21, the tips 29 of the insertion legs 24 are brought closer to each other due to the repulsive force received from the second inclined surface 27 from the vicinity of the entrance of the fitting hole 7. , Corner 33
Advances through the fitting hole 7 while contacting the inner wall 30 of the fitting hole 7,
The lower end surface 19 of the first support member 6 is reached. Along with this, the inclined surface 32 of the engaging portion 23 contacts the corner portion 12 of the third supporting member 8 and advances downward, and the vertical surface 3 of the engaging portion 23.
5 contacts the third support member 8. At this time, the reserve tank 1 uses the wedge-shaped insertion portion 20 and the insertion portion 22 as fulcrums, and
Is pushed and bent in the direction of arrow C, and the repulsive force acts on the reserve tank 1 in the direction of arrow D, which is opposite to the direction of C.

Further, the wedge-shaped insertion portion 20 is replaced with the inverted wedge-shaped portion 2.
1 and the corner portion 33 passes the lower end surface 19, the tip ends 29 of the inserting leg portions 24 that are close to each other try to return to their original positions, and the second inclined portion 27 of the inserting portion 22 is inserted into the fitting hole. The vertical neck portion 2 of the insertion portion 22 is advanced while abutting the vicinity of the exit of 7
5 enters the fitting hole 7, and the bottom outer wall 10 of the reserve tank 1 contacts the upper end surface 18 of the second support member. Along with this, the contact surface 35 of the fitting portion 23 advances downward while contacting the third support member 8 and, when passing the contact surface 31, due to the repulsive force acting on the reserve tank 1, D shown in FIG.
It is pushed back in the direction, and the fitting portion 23 enters the fitting hole 9.

When the reserve tank 1 is attached to the fan shroud 2 as described above, the reserve tank 1 can move vertically and horizontally due to vibrations generated by the operation of the engine and the movement of the vehicle. However, in the upward direction, the first inclined portion 26 of the insertion portion 22 collides with the lower end surface 19 of the first support member 6 and the fitting portion 23 collides with the inner wall of the third support portion 8, so that the reserve tank 1 It is restricted to move up further. As for the downward direction, the bottom outer wall 1 of the reserve tank 1
Since 0 is in contact with the upper end surface 18 of the first support member 6,
The reserve tank 1 is restricted from moving further down. In the left-right direction, since the wedge-shaped insertion portion 20 is fitted in the inverted wedge-shaped portion 21, the reserve tank 1 is restricted from moving further left and right. As a result, the vibration strength between the reserve tank 1 and the fan shroud 2 is improved. Also, without using any brackets or bolts,
Since the reserve tank 1 and the fan shroud 2 can be reliably attached by simply pushing the reserve tank 1 into the fan shroud 2, the attaching process time can be shortened and the manufacturing cost can be reduced.

Since the reserve tank 1 is mounted along the cylindrical wall portion 3 of the fan shroud 2 and in the vicinity of the wind guide wall 4 and the cylindrical wall portion 3 of the fan shroud 2, the reserve tank 1 is installed in the engine room of the vehicle. No wasted space. Although the first embodiment of the present invention has been described above, the present invention can be applied to the following embodiments.

The second embodiment will be described below with reference to the drawings. FIG. 5 shows a support structure in which the reserve tank 1 is attached to the radiator 38 and the fan shroud 2.
The reserve tank 1 includes an insertion portion 22, a wedge-shaped portion 20,
A recess 39 (engagement portion) described later that is recessed inward is provided, and an insertion portion 44 of a mounting arm portion 36 described later is provided in the recess 39.
(Fit part) can be inserted.

The fan shroud 2 comprises a first supporting member 6 having a fitting hole 7 and a second supporting member 5 having an inverted wedge-shaped portion 21. A hole for mounting a mounting arm portion 36 (third support member), which will be described later, is provided in an upper portion of the radiator 38 (upward in a vehicle mounting state), and a fixing member 37, specifically a fixing member 37, is provided through the hole. The radiator 38 and the attachment arm portion 36 are attached by bolts.

FIG. 6 shows a side view seen from the direction F in FIG. In addition, FIG. 6 shows the reserve tank 1 and the radiator 38.
Are attached via the attachment arm portion 36. As shown in FIG. 6, the mounting arm portion 36 includes a parallel arm portion 41 that is parallel to the upper surface portion 11 of the reserve tank 1 (substantially horizontal when the vehicle is mounted), and a semi-circular semicircular arm portion 42 that projects upward. A fixed portion 43 extending from the end of the semicircular arm portion 42 in parallel with the parallel arm portion 41, and an insertion portion 44 (fitting portion) extending downward from the end of the semicircular arm portion 42. have.
The insertion portion 44 can be inserted into a recess (engagement portion) 39 described later. Further, the insertion portion 44 has a recessed portion 3 described later.
A protruding portion 47 is provided at a position facing 9. Further, a hole into which the bolt 37 is fitted is provided at one end of the mounting arm portion 36.

FIG. 7 is a sectional view taken along line EE of FIG. Recess 3
9 has a locking portion 46 and a recess 48, and the locking portion 46 is formed so as to project in parallel with the side surface 34 of the reserve tank 1. As a result, the insertion portion 44 of the mounting arm portion 36 is fitted into the recess 39 so as to cover the outer periphery thereof. Further, the recess 48 can be fitted to the above-mentioned protrusion 47.

Hereinafter, a method for mounting the reserve tank 1 will be described. First, the insertion portion 44 of the mounting arm portion 36 is inserted into the recess 39 of the reserve tank 1 from above (vertical direction when the vehicle is mounted), and the fixing portion 43 of the mounting arm portion 36 is brought into contact with the upper surface portion 11 of the reserve tank 1. Contact. Along with this, the recess 48 of the recess 39 and the insertion portion 44 are fitted together. In addition,
By fitting the recess portion 48 and the insertion portion 44,
The insertion portion 44 and the recess 39 are prevented from coming off.

Next, the wedge-shaped portion 20 of the reserve tank 1 is inserted into the inverted wedge-shaped portion 21 of the second support member 5. And
When it is further inserted, the insertion portion 22 penetrates the fitting hole 7, and the insertion portion 22 and the fitting hole 7 are fitted together. Then, the mounting arm portion 36
A hole (not shown) provided at one end of the radiator and the radiator 3
The mounting arm portion 36 and the radiator 38 are attached by a bolt 37 through a hole (not shown) provided in an upper portion of the vehicle 8 (upward in the vehicle mounted state).

As a result, the support portion between the insertion portion 22 and the first support member 6, and the wedge-shaped insertion portion 20 and the inverted wedge-shaped portion 2 are formed.
1 has the same effect as that of the first embodiment, and the support portion between the reserve tank 11 and the radiator 38 via the mounting arm portion 36 is vibrated in the vertical direction to cause the reserve tank 1 to move. Upward force is exerted on
An upward force also acts on the mounting arm portion 36 via the fixing portion 43 of the mounting arm portion 36. However, the semicircular arm portion 42 of the mounting arm portion 36
Has a semicircular shape and protrudes upward, and therefore a downward pressing force acts on the upward force, so that upward movement is restricted.

In the second embodiment, the same effect can be obtained even if the wedge-shaped insertion portion 20 is not wedge-shaped but pin-shaped. Further, in the first embodiment, the engaging portion 2
3 may have any shape as long as it is in contact with the inner surface of the fitting portion 9 of the third support member 9. Further, in the above embodiment, the insertion portion 22 has the neck portion 25 and the insertion leg portion 24, but the neck portion 25 may have only the extended shape, and in this case, the bottom outer wall 10 of the reserve tank 1 and the neck portion. The distance from the lower end of 25 is such that the neck 25 does not come off due to vibration generated by the operation of the engine or the movement of the vehicle. Further, in this case, the cross-sectional shape of the neck portion 25 may be rectangular or square.

[Brief description of drawings]

FIG. 1 is a view in which a fan shroud 2 and a reserve tank 1 according to a first embodiment of the present invention are attached.

FIG. 2 is a top view of the first embodiment seen from the direction B in FIG.

FIG. 3 is an enlarged view of a portion H in FIG.

FIG. 4 is a detailed view of an essential part of the first embodiment.

FIG. 5 shows a reserve tank mounting structure according to a second embodiment of the present invention.

FIG. 6 is a side view as seen from the F direction in FIG.

7 is a sectional view taken along line EE of FIG.

FIG. 8 is a detailed view showing a conventional structure for mounting a reserve tank.

FIG. 9 is a detailed view showing a conventional reserve tank mounting structure.

[Explanation of symbols]

 1 Reserve Tank 2 Fan Shroud 5 1st Supporting Member 6 2nd Supporting Member 7 Fitting Hole 8 3rd Supporting Member 9 Fitting Part 20 Wedge-shaped Inserting Part 21 Reverse Wedge-like Part 22 Inserting Part 23 Convex ( Engaging part) 36 Mounting arm part (third support member) 44 Inserting part (fitting part)

Claims (1)

[Claims] 1. A radiator for cooling engine cooling water, a fan shroud provided on a side surface of the radiator for guiding cooling air of the radiator, and a reserve tank for storing the cooling water, the fan shroud or A first support member formed in either one of the reserve tanks and having a fitting hole; and a reverse wedge-shaped portion formed in either the fan shroud or the reserve tank and recessed in a reverse wedge shape. A second support member having, a third support member provided on either the fan shroud or the radiator and having a fitting portion, and formed on the other of the fan shroud or the reserve tank, and the first support An insertion portion that can be inserted into a fitting hole of a member, the fan shroud or the reservoir And a wedge-shaped insertion portion that is formed on the other side of the second support member and that can be inserted into the inverted wedge-shaped portion of the second support member, and that is formed in the reserve tank and that is inserted into the fitting portion of the third support member. A fitting part capable of engaging, and an insertion direction of the fitting hole and the insertion part, an insertion direction of the reverse wedge-shaped part and the wedge-shaped insertion part, and the fitting part. The mounting structure of the radiator reserve tank for an internal combustion engine, wherein: