JPH07259561A - Clamping device of motor fan for radiator - Google Patents

Abstract

PURPOSE:To secure a motor fan for a radiator, being easy in the setting operation of this motor fan to the radiator and having a strong insertional mounting structure in which vertical vibrations are controlled. CONSTITUTION:An air flow passing through a core part performing a heat exchange between both air and heat exchange mediums is straightened by a fan shroud. At the time of setting, a lower leg part 28 of this fan shroud is pierced into a through hole 36c from the oblique direction of an arrow A, and subsequently, this leg part 28 is turned round in the direction of an arrow B, making a first claw 44 come into contact with an engaged surface 36g of a lower engaged part 36b, and a second claw part 46 is made so as to come into contact with an engaged surface 36f of an upper engaged part 36a. In this engaging state intact, any vertical motion of the lower leg part 28 of the fan shroud to a lower tank is regulated. Subsequently, the end of an upper leg part of the fan shroud is clamped tight to an upper tank. With this constitution, any vertical vibrations in the fan shroud to a radiator are controlled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric fan device for a radiator mounted on an automobile or the like and a method for mounting the electric fan.

[0002]

2. Description of the Related Art As a conventional automobile radiator, a fan shroud made of resin is attached so as to cover a core portion formed between an upper tank and a lower tank, as disclosed in Japanese Utility Model Publication No. 3-41124. It has been known. The radiator disclosed in this publication is provided with a locking recess or locking projection on the side of the upper tank that is opposite to the shroud body, and locks the shroud body in the locking recess or locking projection. Then, the legs of the shroud body are connected and fixed to the lower tank with bolts. Therefore, at the time of assembly, after locking the locking recess or locking projection on the upper part of the shroud main body to the radiator upper tank,
The procedure for bolting the shroud body to the lower tank is taken.

As another conventional electric fan device for radiator, the one shown in FIGS. 19 and 20 is known. In this conventional type, the electric fan 10 attached to the radiator has the lower side of the shroud main body 3 for fixing the electric fan 10 inserted and the upper side fixed with screws 8 by screws. More specifically, the cylindrical pin 9 formed at the lower end of the leg portion 4 of the fan shroud main body 3 is fitted into the mounting hole 2 of the mounting portion 1 of the lower tank 13 to prevent the fan shroud from being displaced in the left-right direction. The upper end of the upper stay portion 7 of the fan shroud main body 3 is joined and fixed to the upper tank 6 with bolts 8. The housing 1 of the electric fan 10 is provided substantially at the center of the fan shroud body 3.
1 is fixed.

[0004]

However, according to the radiator disclosed in Japanese Utility Model Laid-Open No. 3-41124, a locking recess or a locking projection is provided on the side of the upper tank opposite to the shroud body. Since the shroud body is bolted to the lower tank after the body is locked, the assembling work is complicated.

Further, according to the conventional radiator electric fan device shown in FIGS. 19 and 20, the lower side of the shroud to which the electric fan is fixed is inserted, and the upper side of the shroud is attached and fixed by bolt connection. It is not possible to suppress the vibration on the shroud insertion side with respect to the vertical direction, which is the main vibration direction that occurs when picking up irregularities on the road surface during traveling. For this reason, it is necessary to reinforce the motor stay portion so as to satisfy the vibration resistance strength only with the upper stay portion, resulting in an increase in cost. In addition, there is a problem that a tapping sound is generated due to the insertion difference surface of the fan shroud provided in the lower tank of the radiator and vertical vibration. Furthermore, it is difficult to suppress relative vertical vibration between the radiator and the shroud, so there is a problem that the seismic strength is reduced.

The present invention has been made in order to solve such a problem, and the electric fan for a radiator having a firm insertion mounting structure in which the work of assembling the electric fan to the radiator is easy and the vertical vibration is suppressed. The purpose is to provide a device.

[0007]

A fastening device for an electric fan for a radiator according to the present invention for achieving the above object comprises:
According to the first aspect of the present invention, there are provided a core portion for exchanging heat between the air and the heat exchange medium, an upper tank and a lower tank arranged above and below the core portion, and a fan shroud for rectifying an air flow passing through the core portion. In a fastening device for an electric fan for a radiator provided, a fitting portion provided outside the lower tank and having a fitting hole, and a locking portion formed on the fan shroud and capable of fitting to the fitting portion. And a locking portion having a locking surface for suppressing vertical vibration of the fan shroud.

According to a second aspect of the present invention, there is provided a radiator electric fan fastening device, wherein the locking surface is in contact with an upper surface of the fitting hole of the fitting portion and a lower surface of the fitting hole. And having. According to a third aspect of the present invention, there is provided a fastening device for an electric fan for a radiator in which at least two fastening means including the fitting portion and the locking portion are provided.

According to a fourth aspect of the present invention, there is provided a fastening device for an electric fan for a radiator, in which a core portion for exchanging heat between air and a heat exchange medium, and an upper tank and a lower tank arranged above and below the core portion are provided. In a fastening device for an electric fan for a radiator provided with a fan shroud for rectifying an air flow passing through the core part, a convex locking part provided outside the lower tank and the fan shroud are formed on the fan shroud. A fitting part that can be fitted to the stop part, and a fitting part that suppresses vertical vibration of the fan shroud is provided.

[0010]

According to the fastening device for the radiator electric fan of the present invention, the engaging portion of the fan shroud is inserted into the engaging hole of the engaging portion provided outside the lower tank, and the engaging portion of the engaging portion is engaged. The fitting part abuts against the stop surface and makes contact. As a result, the fan shroud can be easily assembled to the radiator during assembly, and after the assembly, the locking surface of the fan shroud is locked to the fitting part of the lower tank. Suppresses directional vibration.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) A first embodiment in which the present invention is applied to an automobile radiator is shown in FIGS. FIG. 2 shows a front view of a radiator for an automobile, and FIG. 1 shows an enlarged sectional view of a main part of a first embodiment of the present invention. 3 is a front view showing a fitting portion formed in the lower tank, FIG. 4 is an enlarged view of an IV portion shown in FIG. 2, and FIG. 5 is an end portion of a lower leg portion of a fan shroud according to the first embodiment of the present invention. FIG.

In FIG. 2, the radiator 12 comprises an upper tank 6, a lower tank 13 and a core portion 14. The core portion 14 is a core portion for radiating engine cooling water, which is a heat exchange medium, and includes a corrugated fin and a flat tube (not shown), and this tube connects the upper tank 6 and the lower tank 13. An inlet pipe 48 for introducing cooling water from an engine (not shown) and a water supply port 49 are integrally formed in the upper tank 6, and a cap 47 having a pressurizing valve and a negative pressure valve (not shown) is fitted to the water supply port 49. . On the other hand, the lower tank 13 is integrally formed with a discharge pipe 51 for discharging cooling water to the engine and a drain valve 52 for discharging the cooling water from the radiator 12 so as to project in the horizontal direction.

The fan shroud 18 has a core portion 1
4 is provided so as to cover 4 and is interposed between the electric fan 15 driven by the engine and the core portion 14, and the cooling water is rectified so that the cooling air generated by the fan can pass through the core portion 14 well. It is something to do. Radiator 12
Electric fans 15 and 16 are provided at the rear part. The motor bodies 55 and 56 of the electric fans 15 and 16 are fixed to a motor stay 21 integrally formed with the resin fan shrouds 18 and 19. The motor stay 21 is attached to the radiator 12 by two upper leg portions 22 and 24 and two lower leg portions 26 and 28 of the fan shroud 18.

The upper leg portions 22, 2 of the fan shroud 18
The end portions 22a and 24a of the bolt 4 are fastened and fixed to the upper tank 6 by bolts 32 and 34. The lower leg portions 26, 28 of the fan shroud 18 have a fitting portion 36 formed in the lower tank 13 as shown in an enlarged view of FIG.
The end portion 38 of the lower leg portion 28 is fitted and locked to the.

The fitting portion 36 is made of resin and is integrally formed so as to project from the lower tank 13 in the horizontal direction. The fitting portion 36 includes an upper locking portion 36a, a lower locking portion 36b, a right locking portion 36d, and a left locking portion 36e, and is formed in a rectangular shape. As shown in FIG. 1, the upper locking portion 36a is formed so as to horizontally project in a plate shape from the lower tank 13. The upper locking portion 36a has a locking surface 36f on its upper surface, with which a locking surface 46a of a second claw 46 described later is locked.

The lower locking portion 36b is the upper locking portion 3
Lower tank 1 in a plate shape substantially parallel to the lower side of 6a
It is formed so as to protrude from 3 in the same direction. The lower locking portion 36b has a first claw 44, which will be described later, on the lower surface thereof.
Has a locking surface 36g to which the locking surface 44a of FIG.
Is formed with a fitting hole 36c through which the end portion 38 of FIG. A space 42 is formed between the upper locking portion 36a and the lower locking portion 36b.

Right side engaging portion 36d and left side engaging portion 36e
Controls the lateral displacement of the end portion 38 of the lower leg portion 28 of the fan shroud 18. Meanwhile, fan shroud 1
As shown in FIG. 5, an end portion 38 of the lower leg portion 28 of the eighth member 8 has a shape engageable with the fitting portion 36, and has an L-shaped first claw 44 formed at the lower end thereof. A second claw 46 is formed on the opposite surface at a portion slightly above the first claw 44. The first claw 44 is fitted into the through hole 36c of the lower locking portion 36b and locked by contacting the locking surface 36g, and the second claw 46 on the other side is the upper locking portion. The locking surface 36f of 36a contacts and is locked. As shown in FIGS. 1 and 4, the state indicated by the solid line shows the state after the lower leg portion 28 is assembled.

At the time of assembling, as shown by the chain double-dashed line in FIG. 1, the lower leg portion 28 of the fan shroud 18 is inserted obliquely in the direction of arrow A into the through hole 36c, and then in the direction of arrow B. 28 is rotated so that the first claw 44 is moved to the lower locking portion 36.
The second claw portion 46 is brought into contact with the locking surface 36g of b and the second claw portion 46 is brought into contact with the locking surface 36f of the upper locking portion 36a. In this engaged state, as shown in FIG. 1 and FIG.
The lower side of the shroud with respect to the lower tank 13 in the C direction, that is, the vertical direction, as shown in FIG. 4, by engaging and engaging the lower side engaging portion 36b and the second pawl 46 with the upper side engaging portion 36a. The vertical movement of the leg portion 28 is restricted. After that, the end portions 22 a, 24 a of the upper leg portions 22, 24 of the fan shroud 18 are tightened and fixed to the upper tank 6 by the bolts 32, 34.

According to the first embodiment, the lower tank 13
On the other hand, since the end portions 38 of the lower leg portions 26 and 28 of the fan shroud 18 are fitted into the fitting portion 36 and are fixedly locked so that the vertical movement of the fan shroud 18 is restricted, the role of the motor stay is achieved. The motor main body 55 is attached to the radiator 12 so that vertical vibration does not occur in the fan shroud 18. Also, the lower leg portion 2 of the fan shroud 18 is
The fan shroud 18 is fixed by inserting the 6 and 28 into the fitting portion 36 of the lower tank 13 so as not to move up and down.
After the upper leg portions 22 and 24 of the above are fastened and fixed to the upper tank 6 by the bolts 32 and 34, the fan shroud 18 is firmly fixed to the radiator 12.

According to the first embodiment, at the time of assembling, the fan shroud 18 can be easily attached to the radiator 12, and after the assembling, the fan shroud first claws 44 are attached to the fitting portion 36 of the lower tank 13. Since the second claw 46 is locked, vibration of the fan shroud 18 with respect to the lower tank 13 of the radiator 12 in the vertical direction is suppressed. Further, according to the first embodiment, the upper leg portions 22 and 24 can be made relatively thin. That is, conventionally, the upper leg portion 22,
The member corresponding to No. 24 has a thick shape in order to secure high rigidity, but in the present embodiment, the upper leg 2 is provided due to the vibration suppressing effect.
2, 24 can be made relatively thinner than before.
Therefore, in this embodiment, the size and weight can be reduced.

(Second Embodiment) A second embodiment of the present invention is shown in FIGS. 6, 7 and 8. The second embodiment is an example in which the end portion 138 of the lower leg portion 28 of the fan shroud 18 is assembled and fixed to the lower tank 13 in the direction of arrow C and in the direction perpendicular to the core surface. An end portion 138 of the lower leg portion 28 of the fan shroud 18 has two lower plate portions 13 provided in parallel with each other.
8a and an upper plate portion 138b, and these lower plate portions 138a
And the upper plate portion 138b are connected by a connecting portion 138c. The lower surface of the fitting portion 136 has two claws 136a and 136a.
b is formed.

At the time of assembling, the lower leg portion 28 of the fan shroud 18 is inserted from the assembling direction of the arrow D, and when the upper surface of the lower plate portion 138a passes through the claw portions 136a and 136b in the arrow D direction, the fitting portion. The end 138 at 136 snaps into place.
At this time, it becomes difficult for the end portion 138 of the lower leg portion 28 to come off from the fitting portion 136 in the opposite assembly direction. At the same time, the upper plate portion 138b and the lower plate portion 138a are locked by the fitting portion 136 so as not to move up and down, so that the fan shroud 1 does not move against vertical vibration.
The lower leg 28 of 8 is prevented from moving up and down. afterwards,
Ends 22 of upper legs 22, 24 of fan shroud 18
The bolts a and 24a are fastened and fixed to the upper tank 6 with bolts 32 and 34.

Also according to this second embodiment, at the time of assembling, the fan shroud 18 can be easily assembled by inserting the fan shroud 18 into the radiator 12 and then tightening the bolts.
Claws 136a, 136b of the fitting portion 136 of the lower tank 13
Since the lower end 28 of the fan shroud 18 is locked to the fan shroud 18 and the fitting portion 136 is sandwiched and locked between the upper plate part 138b and the lower plate part 138a, the fan shroud 18 is firmly fixed to the radiator 12. Fixed. Therefore, radiator 1
The vertical vibration of the fan shroud 18 with respect to the second lower tank 13 is suppressed.

(Third Embodiment) A third embodiment of the present invention is shown in FIG.
And shown in FIG. The end portion 238 of the lower leg portion 28 of the fan shroud 18 is further provided with the bifurcated small legs 238a and 23.
8b. The two small legs 238a and 238b have first claws 238d and 238e on the opposite side surfaces thereof, and second claws 238f and 238g are formed on the upper side. On the other hand, the lower tank 13 is provided with a fitting portion 236 integrally formed of resin. The fitting portion 236 is formed with a tapered surface whose opening area decreases as it goes downward so as to form a tapered through hole 236a.

When the lower leg portion 28 of the fan shroud 18 is moved downward with respect to the fitting portion 236 during assembly, it is formed between the small leg 238a of the lower leg portion 28 of the fan shroud 18 and the other small leg 238b. By bending the two small legs 238a and 238b so that the hollow portion 300 to be narrowed is narrowed, the tapered through hole 236a formed in the fitting portion 236 is formed.
Pass through. The first claws 238d and 238e are the through holes 2
Immediately after passing through 36a, first claws 238d, 238e
Is locked to the lower surface of the fitting portion 236, and the second claw 238
f and 238g are restricted on the upper surface of the fitting portion 236 so as not to move downward. Thereby, the fitting portion 23 of the lower tank 13
At 6, the lower leg 28 of the fan shroud is locked so that it does not move up and down. Thereafter, the end portions 22a, 24a of the upper leg portions 22, 24 of the fan shroud 18 are attached to the bolts 32,
It is fastened and fixed to the upper tank 6 by 34.

When the lower leg portion 28 of the fan shroud 18 is pulled out from the fitting portion 236, the small legs 238a and 238 are used.
b to the extent that b passes through the through hole 236a.
Elastically bend the small legs 238a and 238b so that the small legs are narrowed, and then the small legs 238a and
38b is pulled out upward. According to this third embodiment,
At the time of assembling, the fan shroud 18 can be easily assembled by inserting the fan shroud 18 into the radiator 12 and then tightening the bolts.
38e is locked to the lower surface of the through hole 236a, and the second claws 238f and 238g are restricted so as not to move downward on the upper surface of the fitting portion 236, so that vertical vibration of the vehicle is effectively suppressed.

In the first, second, and third embodiments described above, the lower leg portion of the fan shroud is made of resin, but the lower leg portion of the fan shroud is made of iron plate. Fourth, fifth and sixth embodiments will be described. In the present invention, the material of the lower leg of the fan shroud fixed to the radiator is not limited to resin or iron. (Fourth Embodiment) A fourth embodiment of the present invention is shown in FIGS. 11, 12 and 13.

The fourth embodiment is an example in which the lower leg of the motor stay for fixing the fan shroud is formed of an iron plate. The fitting portion 336 is made of resin and is integrally formed so as to project from the lower tank 13 in the horizontal direction. This fitting part 336
Is composed of an upper locking portion 336a and a lower locking portion 336b. End 33 of lower leg 128 of fan shroud 18
8 has a first step 338a and a second step 338b.

The upper locking portion 336a is provided on the lower tank 13
It is formed so as to project horizontally in the form of a plate.
The upper locking portion 336a has a locking surface 336f on its upper surface, to which a second step portion 338b described later is locked. The lower side locking portion 336b is formed so as to project from the lower tank 13 in the same direction as a plate shape substantially in parallel to the lower side locking portion 336a. Lower locking part 33
The locking portion 3 with which the first step 338a is locked on the lower surface of 6b
Having 36 g.

Lower leg 128 of fan shroud 18
Is a flat plate-shaped member extending in the longitudinal direction, and has side walls 128a and 128b that are bent at substantially 90 ° at both edges thereof. Then, an L-shaped first step 338a is formed at the tip of the lower leg 128, and a second step 338b is formed in the middle thereof. The upper surface of the first step portion 338a is locked to the lower surface of the first lower locking portion 336b, and the lower surface of the second step portion 338b is locked to the upper surface of the upper locking portion 336a. As a result, the lower leg 128 of the fan shroud 18 is locked to the fitting portion 336 of the lower tank 13 so as not to move vertically.

At the time of assembly, after inserting the lower leg 128 of the fan shroud from the diagonal direction of arrow G shown in FIG. 11, by rotating this lower end 128 in the direction of arrow H,
As shown in FIG. 11, the first step 338a and the second step 338b of the lower leg 128 are fitted and locked in the fitting section 336. Then, the upper leg portion 22 of the fan shroud 18,
The end portions 22a, 24a of 24 are tightened and fixed to the upper tank 6 with bolts 32, 34.

Also according to the fourth embodiment, at the time of assembling, the fan shroud 18 can be easily assembled by inserting the fan shroud 18 into the radiator 12 and then tightening the bolts.
The first step portion 338a of the fan shroud 18 is locked to the lower surface of the lower locking portion 336b, and the second step portion 338b.
Regulates the upper surface of the upper locking portion 336a so as not to move downward, so that the vertical vibration of the vehicle is effectively suppressed.

(Fifth Embodiment) A fifth embodiment of the present invention is shown in FIG.
4 and FIG. Lower leg 1 of the fan shroud
The end portion 438 of 28 is bent in a U-shaped cross section, and tip portions 438a, 438b, 438c are formed. Four
38d is a reinforcement part. The fitting hole 43 is formed in the tip portion 438a.
8e is formed.

On the other hand, the locking portion 536 protruding horizontally from the lower tank 13 is formed with a tapered surface 536a, and a step portion 536 is formed on the side opposite to the tapered surface 536a.
b is formed, and a claw portion 536c is further formed on the lower surface. The locking portion 536 has a left-side locking portion 536d and a right-side locking portion 536e, and the left-side locking portion 536d and the right-side locking portion 36e are the lower leg portion 12 of the fan shroud 18.
The lateral displacement of the end portion 438 of No. 8 is regulated.

At the time of assembly, the lower leg 128 of the fan shroud 18 is inserted into the fitting portion 536 in the direction of arrow I shown in FIG. 14, and the claw portion 536c snaps into the fitting hole 438e of the tip portion 438a. The lower leg 12 with respect to the locking portion 536 when
The end portion 438 of No. 8 is fitted and fixed. Thereafter, the end portions 22a, 24a of the upper leg portions 22, 24 of the fan shroud 18 are
Is fastened and fixed to the upper tank 6 with bolts 32 and 34.

Also according to the fifth embodiment, at the time of assembling, the fan shroud 18 can be easily assembled by inserting the fan shroud 18 into the radiator 12 and then tightening the bolts.
Since the tip end portions 438a and 438c of the fan shroud 18 are fitted into the convex locking portions 536 and are regulated so as not to move vertically, vertical vibration of the vehicle is effectively suppressed. (Sixth Embodiment) A sixth embodiment of the present invention is shown in FIGS. 16, 17 and 18.

In the sixth embodiment shown in FIGS. 16, 17 and 18, the lower end portion 128 of the fan shroud is made of an iron plate. The locking portion 436 is made of resin. The fitting hole 5 is formed in the tip end portion 538a of the lower end portion 128 of the fan shroud.
38b is formed, a step portion 538c is formed on an upper portion thereof, and a reinforcing portion 538d is further formed.

On the other hand, the locking portion 436 integrally molded with the lower tank 13 by a resin has a through hole 60 penetrating vertically.
0 is formed, the first claw portion 436a is formed on the inner wall of the through hole 600, and the second claw portions 436b and 436c are formed on the upper side of the opposite surface. First claw portion 43
6a is fitted in the fitting hole 538b of the lower leg portion 128, and the step portion 538c is locked to the upper surface 436f of the locking portion 436. Further, the locking portion 436 has a left side locking portion 436d and a right side locking portion 436e, and the left side locking portion 436d and the right side locking portion 436e are left and right of the end portion 538 of the lower leg portion 128 of the fan shroud 18. Regulate the misalignment of.

At the time of assembly, as shown in FIG. 16, the lower leg 128 is inserted into the through hole 600 from the top to the bottom as shown by the arrow J, and the first claw portion 436a is fitted into the fitting hole 538b. When done, the assembly is completed. When removing this assembly, the tip end portion 538a of the lower leg portion 128 is elastically bent in the leftward direction in FIG. 16 so that the first claw portion 436a is fitted into the fitting hole 53.
The lower end 128 of the fan shroud can be removed upward by removing 8b. After that, fan shroud 1
The end portions 22a and 24a of the upper leg portions 22 and 24 of 8 are fastened and fixed to the upper tank 6 with bolts 32 and 34.

Also according to the sixth embodiment, at the time of assembling, the fan shroud 18 can be easily assembled by inserting the fan shroud 18 into the radiator 12 and then tightening the bolts.
The first claw portion 436a is a fitting hole 538b of the lower leg portion 128.
And the step portion 538c is attached to the upper surface 4 of the locking portion 436.
Since it is locked to 36f, vertical vibration of the vehicle is effectively suppressed.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view showing a main part of a first embodiment of the present invention.

FIG. 2 is a front view of a vehicle radiator according to the first exemplary embodiment of the present invention.

FIG. 3 is a front view showing a fitting portion formed in the lower tank.

FIG. 4 is an enlarged view of a portion IV shown in FIG.

FIG. 5 is a perspective view showing an end portion of a lower leg portion of the fan shroud according to the first embodiment of the present invention.

FIG. 6 is a side view of the main part of the second embodiment of the present invention.

FIG. 7 is a sectional view obtained by rotating the section taken along line VII-VII shown in FIG. 6 by 90 °.

FIG. 8 is a front view of the main part of the second embodiment of the present invention.

FIG. 9 is a sectional view of a main portion of a third embodiment of the present invention.

FIG. 10 is a front view of a main part of a third embodiment of the present invention.

FIG. 11 is a vertical side view of a main portion of a fourth embodiment of the present invention.

FIG. 12 is a front view of a main part of a fourth embodiment of the present invention.

FIG. 13 is a perspective view showing an end portion of a lower leg portion according to a fourth embodiment of the present invention.

FIG. 14 is a sectional view of a main portion of a fifth embodiment of the present invention.

FIG. 15 is a front view of the main part of the fifth embodiment of the present invention.

FIG. 16 is a sectional view of a main portion of a sixth embodiment of the present invention.

FIG. 17 is a front view of the main part of the sixth embodiment of the present invention.

FIG. 18 is a perspective view showing an end portion of a lower leg portion according to a sixth embodiment of the present invention.

FIG. 19 is a front view of a conventional vehicle radiator.

20 is an enlarged perspective view of a portion XX shown in FIG.

[Explanation of symbols]

6 Upper tank 12 Radiator 13 Lower tank 14 Core part 18 Shroud 22, 24 Upper leg (shroud) 26, 28, 128 Lower leg (shroud) 32, 33 Bolt (fastening means) 36, 136, 236, 336, 436 Stop portion (fitting portion) 36a Upper locking portion (fitting portion) 36b Lower locking portion (fitting portion) 38 End portion 44 First claw (locking portion) 44a Locking surface 46 Second claw (Locking part) 46a Locking surface 438 End part (fitting part) 536 Locking part (convex locking part)

Claims (4)

[Claims] 1. A core part for exchanging heat between air and a heat exchange medium, an upper tank and a lower tank arranged above and below the core part, and a fan shroud for rectifying an air flow passing through the core part. A radiator electric fan fastening device comprising: a fitting portion provided outside the lower tank, the fitting portion having a fitting hole; and a locking portion formed on the fan shroud and fitted to the fitting portion. And a locking portion having a locking surface for suppressing vertical vibration of the fan shroud. 2. The radiator according to claim 1, wherein the locking surface has a portion in contact with an upper surface of the fitting hole of the fitting portion and a portion in contact with a lower surface of the fitting hole. Fastening device for electric fans. 3. The fastening device for an electric fan for a radiator according to claim 1, wherein fastening means including the fitting portion and the locking portion are provided in at least two places. 4. A core part for exchanging heat between air and a heat exchange medium, an upper tank and a lower tank arranged above and below the core part, and a fan shroud for rectifying an air flow passing through the core part. In a fastening device for an electric fan for a radiator provided, a convex locking portion provided outside the lower tank, and a fitting portion that is formed on the fan shroud and can be fitted into the locking portion, A fastening device for an electric fan for a radiator, comprising: a fitting portion that suppresses vertical vibration of the fan shroud.