JPH0357531Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a blower mounting structure suitable for, for example, a blower of a vehicle air conditioner.

(Prior art) For example, in large buses, where the cooling unit of the vehicle air conditioner is installed on the roof,
When servicing and inspecting the blower motor of the blower built into the above unit, it is necessary to remove the blower motor from the above unit.Due to the structure of the cooling unit, maintenance can be carried out from the roof side or from the passenger compartment. The motor was removed from the cooling unit under the respective maintenance conditions.

(Problem that the invention aims to solve) However, in this case, the structure of the cooling unit will differ depending on the maintenance method, and the problem is that it cannot be used with a cooling unit that uses a different maintenance method. There is.

Therefore, in order to solve the above problem, the applicant
Utility Model No. 62-63354 developed a blower mounting structure that can be serviced from the roof side or the passenger compartment side, and the blower motor can be easily removed in either case.
It has already been proposed as a number.

The present invention further improves this already filed proposal,
It is an object of the present invention to provide a blower mounting structure that facilitates attachment/detachment work and improves blower motor maintenance.

(Means for solving the problem) For this reason, the blower mounting structure of the present invention has a blower motor with a smaller diameter than the outer diameter of the blower fan,
A motor holder of the motor is removably attached to the mounting board, and a through hole having a diameter larger than the outer diameter of the blower fan is formed in the board, and the blower fan, blower motor, and motor holder are attached to one side of the mounting board through the through hole. In the blower mounting structure, the blower motor can be attached and detached from the mounting board by providing an engaging part on the circumferential surface of the blower motor that is detachable from the upper end of the motor holder, so that the motor can be separated from the motor holder, and the blower motor is attached to the mounting board. By making it possible to attach and detach the blower motor from the other side and by separating the blower motor from the motor holder, the blower motor can be attached and detached from both sides of the mounting board. The blower motor can be easily and quickly attached and detached, and the blower motor itself can be maintained easily and precisely.

(Embodiment) Hereinafter, an illustrated embodiment in which the present invention is applied to a blower constituting a cooling unit mounted on the roof as an air conditioner for a large bus will be explained. This is a box-shaped cooling unit case installed on the roof of a vehicle, the bottom of which is used as a mounting board, and a plurality of through holes 3 communicating with a vehicle interior 2 are formed in this board 1a.

The through holes 3 are formed to have a larger diameter than the outer diameter of a blower fan which will be described later, and a plurality of blowers 4 such as Sirotskov fans are installed facing these holes 3.

The blower 4 includes a deep bottom scroll 5,
It has a shallow upper scroll 6 that can be joined to the upper edge of the scroll 5, of which the lower scroll 5
A through hole 7 having approximately the same diameter as the through hole 3 is formed at the bottom of the cooling unit case 1, and the opening edge thereof is fixed to the cooling unit case 1 via bolts and nuts 8 and 9.

On the other hand, an intake hole 10 communicating with the atmosphere is formed in the upper scroll 6, and flanged joint edges 5a, 6a between the scroll 6 and the lower scroll 5.
A plurality of clips 11 made of an elastic material are inserted into the scrolls 5 and 5, respectively.
6 are joined to form a scroll chamber 12 inside. In the figure, 13 is a screw that fixes the throats of both scrolls 5 and 6.

A blower motor 14 is installed in the scroll chamber 12.
and a blower fan 15 are accommodated, and the motor 14
is supported by the motor holder 16. That is, the blower motor 14 is provided with a plurality of engagement protrusions 17 and a fixing band 18 on the circumferential surface of the middle and high part thereof, and the motor holder 16 is provided with a hollow cylindrical support capable of accommodating the motor 14. drum 19
An engaging opening 20 is provided on the upper peripheral surface of the drum 19, and the engaging protrusion 17 is engaged with the upper end of the supporting drum 19, and the fixing band 1
The blower motor 14 is fixed by hooking a clip 21 made of an elastic material to the upper edge of the engagement opening 8 and the mouth edge of the engagement opening 20.

A plurality of brackets 22 are protruded from the peripheral surface of the support drum 19, and a bridging piece 23 is fixed to the lower surface of the bracket, and the other end of the bridging piece 23 is fixed to a holder plate 24.

The holder plate 24 is attached to the bottom of the cooler unit case 1 via the bolts and nuts 8, 9, and has a ventilation hole 25 with a diameter larger than the outer diameter of the blower fan 15 formed in the center thereof.
A locking piece 26 is formed upright on the edge of the opening.

On the other hand, on the inside of the blower fan 15, a substantially bell-shaped support cylinder 27 is protruded, and the upper end of the support cylinder 27 is locked to a motor shaft 28, and a nut screwed onto the upper end of the shaft 28 is attached to the upper end of the support cylinder 27. They are integrally connected via 29.

In addition, numeral 30 in the figure is a ventilation chamber housing a heat exchanger (not shown) such as an evaporator inside, which communicates with the ventilation port of the scroll chamber 12;
2 is a refrigerant conduit connected to the heat exchanger, and 33 is a cooler unit cover that closes the upper opening of the cooler unit case 1.

Figures 7a to 7d show other embodiments of the present invention,
The same reference numerals are used for components corresponding to those in the previous embodiment. Among these, in the second embodiment shown in FIG. 7a, an engaging piece 34 is cut and raised on the support drum 19 instead of the engaging hole 20, and a clip 21 is attached to the lower edge of the piece 34 and the upper edge of the fixing band 18. It is characterized in that both legs are latched, and the fixing properties of the clip 21 are improved.

Further, in the third embodiment shown in FIG.
In addition, an engaging piece 34 having the same cross-section as the band 18 is cut and raised at the upper end of the support drum 19, and both legs of the clip 21 are hooked to the upper and lower edges thereof.

The fourth and fifth embodiments shown in FIGS. 7c and 7d show examples in which the clip 21 is omitted, and the motor 1
An engaging protrusion 35 as an engaging part is protrudingly provided on the circumferential surface of the support drum 19, and the supporting drum 19 is made of a suitably strong synthetic resin, and an engaging pawl that can be engaged with and detached from the engaging protrusion 35 is provided at the upper end of the support drum 19. 36 or an engagement hole 37 is provided,
It is characterized by an attempt to reduce the number of parts.

(Function) In the blower mounting structure configured as described above, when the blower 4 is assembled to the cooling unit case 1, for example, the case 1 is fixed at a predetermined position on the bus roof with bolts and nuts, and the inside The upper and lower scrolls 5 and 6, which are joined in advance with clips 11, are placed at predetermined positions.

Next, the blower 4 assembled into the motor holder 16 in advance
is positioned in the case 1 from the passenger compartment 2 side through the through hole 3, and the holder plate 24 of the holder 16 is pressed against the lower surface of the case 1 to connect the plate 24, the cooling unit case 1, and the lower part. Attach the bottom piece of scroll 5 to bolt/nut 8,
Just tighten them together with 9.

When assembling the blower 4 to the motor holder 16, the blower motor 14 is inserted into the support drum 19, its engagement protrusion 17 is hooked to the upper edge of the drum 19, and the fixing band 18 and engagement opening 20 are aligned. Then, the legs of the clip 21 are hooked onto these, and the blower motor 14 is fixed to the motor holder 16. Next, the support cylinder 27 integrated with the blower fan 15 is attached to the motor shaft 28, and this is fixed by tightening the nut 29.

As shown in FIG. 2, the blower 4 assembled into the cooling unit case 1 has a structure in which the blower motor 14 is located in the center of the ventilation path that communicates with the passenger compartment 2 through the ventilation hole 25, and in the upper half of the blower motor 14. is a scroll chamber 1 divided by upper and lower scrolls 5 and 6.
A blower fan 15 is located within the chamber 10 on the intake hole 10 side.

Therefore, when the blower motor 14 is driven in accordance with the air conditioning operation of the vehicle, the motor shaft 28 rotates, the blower fan 15 fixed to the motor shaft 28 rotates, and the inside and outside air flows through the ventilation hole 25 and the intake hole 10. The air is sucked into the scroll chamber 12 as shown by the arrow in FIG.
and is guided to a heat exchanger (not shown) in the chamber 30.

Next, when the blower motor 14 of the blower 4 incorporated in this manner is to be removed from the cooler unit case 1 for periodic inspection or the like, it can be removed from both the roof side of the vehicle and the passenger compartment 2 side.

First, when removing the blower motor 14 from the roof side of the vehicle, as shown in FIG. 6a, for example, close the cooler unit cover 33, loosen the screws 13 and unhook each clip 11, and remove the upper scroll 6. .

Next, the nut 29 is loosened to remove the blower fan 15, and each clip 21 is then hooked and removed to lift the blower motor 14 from the support drum 19.

Therefore, in this case, the blower motor 14 can be separated from the motor holder 16 and taken out.
Compared to the case where these are taken out in one piece, it is not necessary to remove the motor holder 16, and this work does not become large-scale.

In addition, the above-mentioned removal work can be done by simply loosening the screw 13 and nut 29 and attaching and removing the clips 11 and 21, and by removing the parts one by one from above, the next part can be removed. Since the part is exposed and the upward removal path is opened, this series of operations can be performed smoothly and easily without being forced into an unnatural posture or requiring special skill.

On the other hand, when removing the blower motor 14 from the passenger compartment 2 side, for example, as shown in FIG.
All you have to do is loosen the nuts 8 and 9 and take out the motor holder 16 together with the motor 14 from the cooler unit case 1.

In this case, since the through hole 3 of the case 1 and the through hole 7 of the lower scroll 5 are formed to have a larger diameter than the outer diameter of the blower fan 15, the fan 15 rubs against the opening edge of the through hole 3. The motor 14 and blower fan 15 can be taken out smoothly and safely.

Therefore, once the motor 14 integrated with the motor holder 16 is carried to a suitable maintenance workshop, the nut 29 is loosened, the blower fan 15 is removed, each clip 21 is hooked and removed, and the blower motor 14 is pulled out from the support drum 19. good.

Therefore, maintenance and inspection of the blower motor 14 itself can be performed easily and accurately. In addition, in this case, the simple work of loosening the nuts/bolts 8, 9 and nuts 29 and the work of hooking and removing the clips 21 is sufficient, and since the motor holder 16 can be removed with the motor 14 still assembled, it is possible to Work at high places within the building can be done in a short time, and subsequent disassembly work can be carried out easily and safely by carrying this assembly to a suitable maintenance workshop.

After completing the specified maintenance work, all you have to do is assemble the related parts from the roof side of the vehicle or from the passenger compartment 2 side in the reverse order of removal. 1
Since it can be easily assembled by making full use of parts 1 and 21, this can be done easily and quickly.

In this way, in the present invention, since the blower 14 can be removed from the roof side of the vehicle or the passenger compartment 2 side and the blower motor 14 etc. can be maintained and inspected, the above two types of maintenance methods can be accommodated, and it can be adopted regardless of these maintenance methods. By being able to do this, it is possible to share the cooling unit.

(Effects of the invention) As described above, the mounting structure of the blower of the present invention is such that an engaging part is provided on the circumferential surface of the blower motor that can be engaged with and detached from the upper end of the motor holder, thereby making it possible to separate the motor from the motor holder. Therefore, compared to a case where these are integrally constructed, there is no need to attach or detach the motor holder, the blower motor can be attached or detached easily and quickly, and the blower motor itself can be maintained easily and precisely.

In addition, in the present invention, since the blower motor can be attached and detached from the top and bottom of the mounting board, the attaching and detaching direction can be selected as appropriate depending on the maintenance work, and there is a practical effect of improving the convenience of maintenance of the blower.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention, showing the external appearance of the cooling unit, Fig. 2 is an enlarged cross-sectional view taken along line A-A in Fig. 1, and Fig. 3 is a perspective view showing an embodiment of the present invention. FIG. 4 is an exploded perspective view showing the assembly of the blower applied to the present invention; FIG. 5 is an exploded perspective view showing the main parts of the blower motor and motor holder. The enlarged sectional view and FIG. 6 are perspective views showing how the blower is removed.
7 shows a state of removal from the passenger compartment side, and FIGS. 7a to 7d are sectional views showing main parts of another embodiment of the present invention. 1a...Mounting board, 3...Through hole, 4...Blower, 5...Lower scroll, 6...Upper scroll, 7...Through hole, 11...Clip, 14...Blower motor, 15...Blower fan, 16...Motor holder.

Claims (1)

[Scope of utility model registration request] It has a blower motor with a smaller diameter than the outer diameter of the blower fan, a motor holder of the motor is removably attached to a mounting board, and a through hole with a larger diameter than the outside diameter of the blower fan is formed in the board, and the motor is inserted through the through hole. In a blower mounting structure in which a blower fan, a blower motor, and a motor holder can be integrally attached and detached from one side of the mounting board, an engaging part that can be engaged and detached from the upper end of the motor holder is provided on the circumferential surface of the blower motor, and the above-mentioned motor is connected to the motor. A mounting structure for a blower, characterized in that the blower motor is detachable from the holder, the blower motor is detachable from the other side of the mounting board, and the blower motor is detachable from the motor holder.