JPH0834230A - Blower motor fixing device of on-vehicle air purifier - Google Patents

Abstract

PURPOSE:To develop a blower motor fixing device for obtaining a trunk builtin type air purifier which is compact, thin, and mounted in a vehicle. CONSTITUTION:A through hole 23 for mounting a blower motor is formed in a case 21 of an air purifier. A locking structure which locks a plurality of tongue pieces 31 formed around the blower motor by a bayonet means is provided at a peripheral fringe of the through hole 23. Furthermore, a mounting cover 33 on which a coming-off prevention means which prevents coming off of the blower motor locked by the locking structure is provided is provided. Consequently, it is possible to reduce the thickness of the air purifier, make it compact, and improve worakability for mounting the blower motor on the case greatly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower motor fixing device incorporated in a trunk built-in type air purifier mounted on a rear parcel shelf of an automobile.

[0002]

2. Description of the Related Art As a conventional trunk built-in type air cleaner structure which is attached to a rear parcel shelf of an automobile, there is, for example, a structure shown in FIG.

The conventional example will be described below. Reference numeral 1 denotes a rear parcel shelf installed in an automobile. A built-in type air purifier 2 is fixedly held on the rear surface of the rear parcel shelf 1, that is, on the trunk room side.

This air purifier 2 has an air discharge port 3
And a case 5 having an air intake 4, a filter 6 mounted near the air discharge port 3 in the case 5, a fan 7 arranged near the air intake 4, and a blower motor for driving the fan 7. 8 are equipped.

As shown in the detailed view of FIG. 2, the mounting structure of the blower motor 8 to the case 5 is formed with through holes 9 for positioning the blower motor 8 in the case 5, and three peripheral portions of the through holes 9 are provided. A fitting recess 11 surrounded by a rib 10 and a screwing boss 12 for a mounting screw 16 are provided on the. Reference numeral 13 is a mounting cover for the blower motor 8, and the mounting cover 13 is provided with a fitting recess 14 and a through hole 15 for a mounting screw 16, which are provided to face the fitting recess 11 and the screw boss 12. There is something.

Tongues 17 projecting in the radial direction are provided at approximately three positions around the blower motor 8 and vibration-proof rubbers 18 are attached to these tongues 17. It Then, in order to mount the blower motor 8 on the case 5, each tongue piece 17 formed around the blower motor is used.
Are fitted into the respective fitting recesses 11 of the case 5 via the vibration-proof rubber 18, and then the blower motor is covered by the mounting cover 13 so as to be pressed against the case 5 from below, and the fitting cover 13 is fitted. Each of the tongues 17 is fitted into the fitting recess 14 via the vibration-proof rubber 18, and then the mounting screw 16 is screwed into the screwing boss portion 12 through the insertion hole 15 so that the case 5 and the mounting cover 13 are joined together. The blower motor is clamped and fixed.

The purpose of attaching the anti-vibration rubber 18 to the tongue piece 17 is to prevent the vibration of the blower motor 8 from being propagated to the case 5 to cause noise, and the mounting cover 13 is used for the blower motor. The metal edge portion 18 is exposed to the inside of the luggage compartment so that the exposed portion does not damage the luggage stored in the luggage compartment.

[0008]

However, in such a conventional blower motor fixing structure, the case 5 is used.
Three mounting screws 1 screwed to the screwing boss 12 provided on the
Since the fixing force of the blower motor 8 and the holding frame 13 is held by 6, the blower motor 8 and the holding frame 1
The superposition of 3 is to be received by the three mounting screws 16.

Therefore, since the fixing force for fixing the blower motor 8 and the pressing frame 13 to the case 5 is due to the three mounting screws, for example, in order to secure or increase the fixing force, the mounting screw 16 is It is necessary to take measures such as increasing the length (size) and increasing the number of mounting screws to be used, which causes a problem that the blower motor fixing part of the case becomes large and the workability of installing the blower motor decreases. . In particular, in the case of an on-vehicle air purifier, it is used under environmental conditions where vehicle vibrations are constantly applied, so the conventional blower motor mounting structure has a larger mounting shape, which makes it a desirable thin air purifier. There was also a problem that it was difficult to provide.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and a receiving portion for receiving the blower motor in a suspended state is formed integrally with the case of the air purifier. By adopting a structure that receives most of the overlap of the blower motor with the part, even if the fixing force by the mounting screw is low, it is possible to secure a sufficient holding force for the case of the blower motor. An object of the present invention is to provide a blower motor fixing device for an on-vehicle air purifier that can be advantageously used as a container.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments shown in the drawings.

In FIGS. 3 and 4, reference numeral 21 is a case of the air purifier, and a lower surface 26 of the case 21 is formed with a through hole 23 for positioning the blower motor 22.
A rib 24 standing upright in the axial direction of the through hole 23 is formed integrally with the case 21 at the peripheral edge of the through hole 23, and side face cutouts 25 are formed at three circumferential positions of the rib 24. Has been done. In addition, a flat surface notch 2 is formed at the edge of the through hole 23 in a direction in which the hole diameter of the through hole 23 is widened.
7 are provided at three locations adjacent to each of the side surface notches 25.

A guide wall 28 and an abutment wall 29 extending in a direction perpendicular to the peripheral edges and one radial edge of each of the plane cutouts 27 are formed. A receiving surface 30 that is formed in a direction parallel to the case lower surface 26 is integrally formed at the leading edges of the wall 28 and the contact wall 29.

Tongues 31 projecting in the radial direction are provided at approximately three equal positions around the blower motor 22.
An anti-vibration rubber 32 is attached to these tongue pieces 31.

Reference numeral 33 is a mounting cover which covers the lower peripheral edge of the blower motor 22.
A side L-shaped pressing piece 36 corresponding to the tongue piece 31 of the blower motor 22 and further having a rising edge 34 and a horizontal edge 35.
And a screw insertion hole 38 corresponding to the screw hole 37 provided in the case 21 is formed. Reference numeral 39 denotes a mounting screw for mounting the mounting cover 33 on the case 21.

The above is the configuration of the present embodiment, and its operation will be described below.

First, the blower motor 22 is locked to the case 21, and the case 21 and the blower motor 22 are locked by a known bayonet method.

That is, each tongue piece 31 of the blower motor 22
An anti-vibration rubber 32 is attached to the ribs, and each tongue piece 31 to which the anti-vibration rubber 32 is attached is attached to the rib 2 formed on the case 21.
It is located in the side surface notch 25 formed in No. 4 and is applied to the case lower surface 26.

Next, the blower motor 22 is rotated in the circumferential direction until the end of the tongue piece 31 abuts against the abutment wall 29, and a part of the tongue piece 31 becomes a guide wall 28. Receiving surface 3
The blower motor 22 is positioned in the case 21 by fitting it into the concave step portion formed by 0 and 0.

Next, the blower motor 22 is attached to the lower surface 26 of the case 21 on which the blower motor 22 is positioned.
The mounting cover 33 is attached using the mounting screws 39 so as to cover the lower peripheral portion. By attaching the attachment cover 33, the corners of the tongue piece 31 are locked by the rising edge 34 and the horizontal edge 35 of the pressing piece 36 provided on the attachment cover 33, so that the tongue piece 31 contacts the case. The circumferential movement of the blower motor is restricted by the contact between the contact wall 29 and the upright edge 34 of the pressing piece 36, and the tongue piece 31 is fixed to the case lower surface 26.
The movement of the blower motor in the axial direction is restricted by the abutment of the receiving surface 30 and the horizontal edge 35 with each other, and the tongue piece 31 is further guided by the guide wall 2.
When the blower motor is in contact with 8, the radial movement of the blower motor is regulated, and the blower motor is firmly fixed to the case 21 in the vertical, front-rear, and left-right directions without being loosened.

When the mounting cover 33 is screwed to the case 21, the horizontal edge 35 of the pressing piece 36 is fixed to the case 21.
It may be set to be flush with the receiving surface 30 of the tongue piece 31, but if the horizontal edge 35 is set to project slightly above the receiving surface 30, the anti-vibration rubber 32 attached to the tongue piece 31.
Can be compressed and pinched, which allows the anti-vibration rubber 3
Even if 2 is subject to plastic deformation over time, the blower motor can be held for a long time without backlash.

Further, the receiving surface 30 has the opening edge portion or the entire surface thereof as an inclined surface which inclines downward, so that the tongue piece 31 to which the anti-vibration rubber is attached is received with the guide wall 28. The insertion operation into the concave step portion formed by the surface 30 is smoothly performed.

As described above, according to this embodiment, most of the weight of the blower motor attached to the case 21 is the case 21.
It is received by the receiving surface 30 formed on the
Since only a part of the blower motor weight is received by the horizontal edge 35 of the mounting cover 33, the weight of the blower motor added to the mounting cover 33 is small, and the mounting cover 33 is screwed onto the case 21. The load on the mounting screw 39 to be worn is small.

Therefore, since the mounting cover 33 can be fixed to the case 21 by using the small mounting screws 39, the overall shape of the air purifier can be reduced. In particular, the air purifier can be downsized by reducing the thickness.

Further, since the mounting cover 33 is screwed to the case 21 after the blower motor 22 is positioned in the case 21, the workability of mounting the blower motor 22 and the mounting cover 33 to the case 21 is greatly improved. It is something.

[0026]

As described above, according to the present invention, a plurality of tongues 31 are provided around the fan motor provided in the air purifier, and the tongues 31 are attached to the air purifier. Case bottom surface 2 for engaging the pieces 31 in a bayonet manner
6, a guide wall 28, an abutment wall 29, and a receiving surface 30 are provided, and a mounting cover 33 that covers the lower peripheral edge of the fan motor has a bayonet type rotation of the blower motor engaged with the case. Since the pressing piece for preventing the above-mentioned problem and the mounting screw insertion hole for screwing the mounting cover to the case are provided, the vibration-proof rubber-coated tongue piece 31 formed on the blower motor is provided on the case. By being locked to the case lower surface 26, the guide wall 28, the contact wall 29, and the receiving surface 30, the blower motor is held by the case, and most of the weight of the blower motor attached to the case 21 is in the case 21. Since the structure is such that it is received by the formed receiving surface 30 and only a part of the blower motor weight is received by the horizontal edge 35 of the mounting cover 33, the mounting cover Weight of blower motor applied to 3, there is little, only a small burden on the mounting screw 39 which is screwed to the mounting cover 33 to the case 21.

Therefore, since the mounting cover 33 can be fixed to the case 21 by using the small mounting screws 39, the overall shape of the air purifier can be reduced. In particular, the air purifier can be downsized by reducing the thickness.

Further, by fixing the mounting cover 33 to the case in which the blower motor is locked, the blower motor is vertically, forward, backward, leftward and rightward with respect to the case by the pressing piece 36 provided on the mounting cover 33. It is firmly and securely fixed and held without backlash.

Further, according to the present invention, after the blower motor 22 is positioned in the case 21, the mounting cover 33 is screwed to the case 21, so that the case 2
The workability of attaching the blower motor 22 and the attachment cover 33 to the No. 1 is significantly improved.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing a conventional built-in type air purifier.

FIG. 2 is an exploded perspective view showing a mounting structure of a fan motor and a case in a conventional air cleaner.

FIG. 3 is an exploded perspective view showing a mounting structure of a fan motor and a case in the air cleaner of the embodiment of the present invention.

FIG. 4 is a perspective view showing the detailed structure of essential parts of the embodiment of the present invention.

FIG. 5 is a perspective view of an essential part showing a motor fixing state of the embodiment of the present invention.

[Explanation of symbols]

 21 ... Case 22 ... Blower motor 23 ... Through hole 24 ... Rib 25 ... Side cutout 26 ... Case lower surface 27 ... Flat cutout 28 ... Guide wall 29 ... Abutment wall 30 ... Receiving surface 31 ... Tongue 32 ... Anti-vibration Rubber 33 ... Mounting cover 34 ... Standing edge 35 ... Horizontal edge 36 ... Holding piece 37 ... Screw hole 38 ... Screw insertion hole 39 ... Mounting screw

Claims (1)

[Claims] 1. A blower motor (22) provided with a plurality of tongues (31) protruding in the radial direction of the periphery and said tongues (3).
A case (21) formed with a vibration-proof rubber (32) to be covered with 1) and a through hole (23) for mounting the blower motor.
And a mounting cover (3) that is screwed to the case (21) and covers the lower peripheral edge of the blower motor (22).
3), the lower surface of the case (26) against which the upper surface of the tongue piece abuts the upper surface of the tongue piece (31) via the anti-vibration rubber on the peripheral edge of the through hole (23), and receives the lower surface of the tongue piece. Receiving surface (3
0), a guide wall (28) for guiding the tip edge of the tongue, an abutment wall (29) for abutting the side edge of the tongue, and the mounting cover (33) includes a case. Standing edge (3) that regulates the circumferential displacement of the blower motor locked to (21)
4) The blower motor fixing device for an in-vehicle air purifier characterized by being provided with.