JPH0528934Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a motor cooling device used in a blower of an automobile air conditioner, and particularly relates to an improvement in the mounting structure of a cooling hose.

(Prior art) As a conventional cooling device, for example,
The one shown in Publication No. 28650 is known.
This involves covering the motor that drives the fan with a motor cover attached to the fan storage case, connecting one end of the cooling hose to the air intake tube formed in the fan storage case, and connecting it to the air intake tube formed in the motor cover. The other end is fitted into the fan cylinder to guide the air inside the fan storage case into the inside of the motor.

(Problem that the invention aims to solve) However, in most of the air conditioners installed in automobiles, the blower is placed in front of the passenger seat, and the cooling hose is exposed near the footwell, so the above-mentioned cooling Just being fitted into a tube like a hose is not a solid installation, and there is a risk that it will easily come off when a work tool or foot is attached to it, resulting in the motor not being able to be cooled sufficiently. It was hot.

Therefore, an object of this invention is to provide a highly reliable motor cooling device for an automobile air conditioner that does not easily come out even when a working tool or the like gets stuck in the cooling hose.

(Means for Solving the Problems) Therefore, the gist of this invention is to fix a motor cover 4 that covers a motor 3 that rotates the fan 2 to a fan storage case 1 that stores the fan 2; One end of the cooling hose 7 is connected to the fan storage case 1, and the other end is connected to the motor 3 via the motor cover 4, so that air inside the fan storage case 1 is guided to the inside of the motor 3. In a motor cooling device for a blower, the motor cover 4 includes a bowl-shaped bulge 14 that covers the motor 3, and a bowl-shaped bulge 14 that extends around the opening edge of the bulge 14 toward one end of the cooling hose 7. The flange portion 15 is formed to have a portion 15a, and these bulging portions 1
4 and the flange portion 15 are formed by two cover members 4a, 4b, and the cover members 4a, 4b are divided into two parts.
Through holes 18a and 18b are formed in the flange portion 15 and the bulging portion 14 through which the cooling hose 7 passes, respectively, by cutting out the joint portion of the cooling hose 7. protrusions 13a and 13c protruding from the outer periphery of the fan housing case 1, the protrusion 13a on the side of the fan storage case 1 is placed on the periphery of the through hole 18a of the flange 15, and the protrusion 13c on the motor side is placed on the bulge. 14 through holes 18b, respectively.

(Function) Therefore, even if a working tool or the like gets caught in the cooling hose 7, the protrusion 13 of the hose
a, 13c are locked to the peripheries of the through holes 18a, 18b, so the initial attachment state of the cooling hose 7 can be maintained, and the through holes 18a, 18b
As long as the peripheral edges and protrusions 13a, 13c are not destroyed, there is no risk of them coming off easily, and therefore the above object can be achieved.

(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, the blower of the automobile air conditioner connects a fan 2 housed in a fan storage case 1 to a drive shaft 3a of a motor 3, which is partially inserted into the case 1, and Motor body 3
The motor cover 4 covers the portion exposed from the fan storage case 1 of b.

The fan storage case 1 has a scroll shape whose diameter gradually increases, and an air outlet portion 5 is formed on the side surface of the case 1 where the diameter has expanded most. On the other hand, the fan 2 is composed of a multi-blade fan such as a Shirotsuko fan, and its air inlet 2a faces into an intake box 30 fixed to the upper part of the fan storage case 1, and rotates when energized by a motor 3 to open the interior of the vehicle or the vehicle. It functions to suck in air from outside and forcefully send this air from the outlet section 5 into the rear case. A part of the air to be pressure-fed is sent into the motor 3 from an air introduction part 6 formed in the air outlet part 5 via a cooling hose 7.

The air introduction part 6 is surrounded by a side surface that transitions from the smallest diameter part of the fan storage case 1 to the air outlet part 5, and this surrounded part is divided into upper and lower parts by a partition plate 8. , the upper half is covered with an outer panel 9. And air introduction part 6
A cutout 10 is formed on the leeward side of the side surface above the partition plate 8, and this cutout 10
The air introduced from the cooling hose 7 is guided into the cooling hose 7 via an air intake tube 11 formed in the partition plate 8 and extending downward.

The cooling hose 7 is fitted into the air intake tube 11 on the fan storage case side (one end), and is formed on the motor body 3b via the motor cover 4 on the motor side (other end). It is fitted into the air suction port cylinder 12. Protrusions 13a, 13b, and 13c protruding from the outer periphery of the hose 7 are formed near both ends of the hose 7, and in this embodiment, the protrusions 13a, 13b, and 13c are the parts of the cooling hose. They are formed into an annular shape with an enlarged diameter, and two are formed at appropriate intervals on the side of the fan storage case of the hose 7, and one is formed on the side of the motor.

As shown in FIG. 3, the motor cover 4 includes a bowl-shaped bulge 14 that covers the motor 3, and the cooling hose 7 around the opening edge of the bulge 14.
It consists of a flange portion 15 that protrudes so as to have a portion 15a that largely extends toward one end, and is fixed to the fan storage case 1 by screwing the flange portion 15. Further, the motor cover 4 includes two cover members 4a and 4 that symmetrically divide the bulge portion 14 and the flange portion 15.
The motor 3 is activated by inserting the holding rods 16, 16 formed on the inner surfaces of the bulging portions 14 forming the cover members 4a, 4b into the holding holes 17 formed on the side surfaces of the motor body 3b. keeping.

Further, in the flange portion 15 and the bulging portion 14 of the motor cover 4, through-hole portions 18a and 18b are formed by cutting out the joint portions of the cover members 4a and 4b in an arc shape to allow the cooling hose 7 to pass through, respectively. ing.
The above-mentioned cooling hose 7 has both ends sandwiched between the bulge 14 and the flange 15 formed by the two cover members 4a and 4b, and the flange is sandwiched between the two protrusions 13a and 13b on the side of the fan storage case. 15, and one of the projections 13a is engaged with the periphery of the through hole 18a from the side facing the other end of the hose 7. Further, on the other nearby motor side, this protrusion 13c is locked to the periphery of the through hole 18b on the side facing one end of the hose 7.

In the above-described configuration, the procedure for attaching the cooling hose 7 will be described. First, the motor side of the cooling hose 7 is fitted into the air suction tube 12 of the motor body 3b. Next, the cover member 4a of the motor cover 4,
4b and the holding rod 16 is connected to the holding hole 17 of the motor body 3b.
The cooling hose 7 is inserted into the through holes 18a of the flange portion 15 and the bulging portion 14, respectively.
Pinch it from the left and right so that it is applied to 18b. At this time, on the fan storage case side of the cooling hose 7, the through hole 18a of the flange portion 15 is located between the two protrusions 13a, 13b, and on the motor side, the through hole 18b of the bulge 14 is located between the two projections 13a, 13b. sandwich the protrusion 13c so that it is positioned within the bulge 14. Thereafter, the motor cover 4 may be screwed to the fan storage case 1 while inserting the fan storage case side of the cooling hose 7 into the air intake tube 11 of the fan storage case 1.

Therefore, the attached cooling hose 7 is
Even if you try to pull it out by pulling the middle part, it will not come out easily because the protrusions 13a and 13c are locked to the periphery of the through holes 18a and 18b, and the motor 3 will drive and the fan 2 will rotate. During this period, part of the air sucked by the fan 2 is reliably supplied to the inside of the motor 3 through the cooling hose 7. In addition, the protrusion 1 on the side of the fan storage case
There are two 3a and 13b, but at least one
It is sufficient to have only the 3a side.

In FIG. 4, another embodiment of the invention is shown. In this embodiment, the flange portion 1
This embodiment differs from the previous embodiment in that the through hole 18a of No. 5 is formed by cutting out the joint portion of the cover members 4a, 4b up to the tip of the flange portion 15. In the case of the through hole portion 18a having such a structure, the fan storage case side of the cooling hose 7 is connected to the cover members 4a, 4b.
There is no need to apply it to the through hole 18a when joining.
It also has the advantage of simplifying the installation work since it is only necessary to push it in in the direction of the arrow after joining.

(Effects of the invention) As described above, according to this invention, the protrusion formed on the fan storage case side of the cooling hose is formed on the periphery of the through hole formed on the flange of the motor cover, and the protrusion is formed on the motor side. The formed protrusions are each locked to the periphery of the through hole formed in the bulge of the motor cover, so even if a work tool or the like gets caught in the cooling hose, there is a risk that it will easily come off. There is no.

Further, since the motor cover is made up of a cover member divided into two parts, the cooling hose can be attached by being sandwiched between the parts, and the attachment is easy.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway front view showing an embodiment of this invention, Figure 2 is a perspective view of the same, Figure 3 is a bottom view showing the motor cover and cooling hose used in the same, and Figure 4. shows the main part of another embodiment of this invention. 1...Fan storage case, 2...Fan, 3...
...Motor, 4...Motor cover, 4a, 4b...
Cover member, 7...cooling hose, 13a and 1
3b, 13c... protrusion, 14... bulge, 15
...Flange portion, 18a, 18b...Through hole portion.

Claims (1)

[Claims for Utility Model Registration] A motor cover 4 covering a motor 3 for rotating the fan 2 is fixed to a fan storage case 1 that stores a fan 2, and one end of a cooling hose 7 is connected to the fan storage case 1. In a blower motor cooling device, the other end of which is connected to the motor 3 via the motor cover 4 to guide air inside the fan storage case 1 into the motor 3, the motor cover 4 is connected to the motor 3. It is composed of a bowl-shaped bulge 14 that covers the motor 3, and a flange 15 formed to have a portion 15a around the opening edge of the bulge 14 that largely extends toward the vicinity of one end of the cooling hose 7. At the same time, these bulges 14
The cooling hose 7 is formed by two cover members 4a and 4b that separate the flange portion 15 and the flange portion 15, and the cooling hose 7 is passed through the flange portion 15 and the bulging portion 14 by cutting out the joint portion of the cover members 4a and 4b. Through hole part 1
8a and 18b, respectively, and protrusions 13a and 13c protruding from the outer periphery of the cooling hose 7 are provided near both ends of the cooling hose 7, respectively, and the protrusion 13a on the side of the fan storage case 1 is connected to the flange. A motor cooling device for a blower, characterized in that protrusions 13c on the motor side are respectively locked to the periphery of the through hole 18a of the section 15 and to the periphery of the through hole 18b of the bulge 14.