JPH0678043B2 - Blower motor cover for vehicles - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a cover for a vehicle blower motor.

[Technical background and problems]

BACKGROUND ART Conventionally, as a cover for a vehicle blower motor of this type, for example, there is one shown in FIGS. 6 and 7 (see Japanese Utility Model Laid-Open No. 55-36968). That is, 1 is a case of the blower A arranged in the instrument of the automobile, and the fan 2 is arranged in the case 1. The motor 3 that drives the fan 2 is located outside the case 1, and through the mounting opening 1a formed in the case 1,
It is connected to the fan 2. The motor 3 and the cover 4 that covers the motor 3 are integrally fixed to the case 1 by the screws 6 through the bracket 5 and the flange 4a, respectively.

By the way, the inside of the instrument in which the blower A can be installed is arranged because many parts such as a speedometer, a combination meter, a control panel, a clock and a radio and wirings for the same must be arranged. It is desirable that each component be as small as possible.

However, this is one in which the fan 2 is arranged in the case 1 from the mounting opening 1a, and since the mounting opening 1a has to have a larger diameter than the fan 2, the bracket 5 attached to the mounting opening 1a has a mounting opening 1a. Get bigger. Therefore, the cover 4 to be attached to the case 1 with the bracket 5 interposed therebetween must be provided with the flange 4a according to the size of the bracket 5. Therefore, the cover 4 is increased in size by the flange 4a irrespective of the size of the motor 3 to be covered, and thus there is a problem that it is against the request for downsizing.

[Object of the Invention]

The present invention has been made in view of the above circumstances to solve the problem, and provides a cover for a vehicle blower motor that can cover the motor without enlarging the cover. The purpose is to

[Outline of Invention]

The present invention is a blower motor for a vehicle, comprising a cover that covers a motor that is fixed to a case by driving a motor that is connected to and driven by a fan housed in the case through a mounting opening formed in the case. It is formed in a tubular shape with one end open, has a pipe introduction hole extending from the opening of one end toward the other end, has an engaging portion on the inner peripheral surface of the other end, and engages with the front end of the motor. A locking portion that locks the portion with the pressing force from the other end side of the cover is provided, and when the cover covers the motor, the engaging portion is locked by the locking portion and extends from the case. A cooling pipe penetrates the pipe inlet hole.

〔Example〕

The present invention will be described based on an embodiment of the blower B arranged in the instrument of the automobile shown in FIGS. 1 to 4.

11 is a case of the blower B, and a fan is provided in the case 11.
Twelve are arranged. The fan 12 is removably interlockedly coupled to a motor 13 arranged on one side of the case 11 through a mounting port 11a formed in the case 11. And fans
The motor 12 is driven by a motor 13 so as to blow air into the vehicle compartment from a blower port 11b through a duct (not shown) or a cooling unit and a duct. motor
Reference numeral 13 denotes a screw 16 and a washer 16a via a bracket 15 arranged on a circular mounting portion 11c formed on the edge of the mounting opening 11a.
Are integrally fixed to the outside of the case 11. The motor 13 is driven by a switch (not shown) provided on the instrument.

The motor 13 is covered with a cover 14 on the outside of the case 11, and the motor 13 and the cover 14 are formed on the inner circumference of the cover 14 corresponding to the groove 13a formed in the frame 13A of the motor 13 and the groove 13a. It is fixed by fitting with the provided claw portion 14a. That is, the cover 14 is composed of a cylindrical portion and a truncated cone portion, and, as shown in FIG. 2, faces the opening end of the cylindrical portion through the gap of the mounting port 11a on the outer surface of the case 11, As shown in FIG. 4, a plurality of triangular pyramid-shaped claw portions 14a are arranged in the circumferential direction in the cylindrical portion near the boundary with the headwater portion toward the inner side of the cover 14 at the circumferential direction. It is provided. On the other hand, the frame 13A of the motor 13 faces inwardly toward a position corresponding to the claw portion 14a of the cover 14, that is, toward the engine portion side opposite to the connecting portion of the fan 12, and extends in a circumferential groove over a predetermined range of the outer peripheral surface. The groove portion 13a is provided. The claw portion 14a is made of a resin material, and the groove portion 13a has a circumferential groove shape as described above. Therefore, as shown in FIG. 3, the groove portion 1 can be formed at any position of the frame 13A.
It can be fitted in 3a freely.

17 is a power supply connector for the motor 13,
And one end of the cover 14 and the other end of the cover 14 are drawn to the outside from a connector drawing port 18 formed on the cylindrical portion side from the boundary with the frustoconical portion of the cover 14. In addition, 19 is a motor by sending a part of the wind generated by the fan 12 to the motor 13 side.
13 is a cooling pipe for preventing overheating. The cooling pipe 19 is drawn to the outside from a pipe outlet 11d formed in the mounting edge portion 11c on the side of the blower port 11b of the case 11, and the other end is a cylindrical portion from the boundary with the truncated cone portion of the cover 14. Cover from the pipe entry hole 20 formed by cutting out to the end on the side
It is drawn into the frame 14 and communicates with the frame 13A through a connection port (not shown) formed in the frame 13A.

Reference numerals 21 and 22 denote an outside air intake and an inside air intake, which communicate with the opposite side of the motor 13 mounting portion of the case 11, respectively, and are configured to be switchable by a switch provided in the instrument by an intake door (not shown). .

To assemble the blower B, the fan 12, the bracket 15 and the motor 13 are integrally assembled in advance. And
First, the assembled fan 12, bracket 15 and motor 13 are arranged inside the case 11 with the fan 12 and outside the case 11, respectively, and the bracket 15 is fixed with the screws 16, so that the fan 12 and the The motor 13 is fixed inside and outside the case 11. Next, one end of the cooling pipe 19 is connected to the pipe outlet 11d to communicate with the inside of the case 11, and the other end is connected to the connection port of the frame 13A of the motor 13 to communicate with the inside of the frame 13A and power supply. Connector 17 for motor is connected to motor 13. After that, align the pipe inlet hole 20 with the position of the cooling pipe 19, and
Align the connector outlet 18 with the position of the power supply connector 17, push the cover 14 from the end side of the motor 13 to the case 11 side, and form the claw portion 14a of the cover 14 within the predetermined range of the outer periphery of the frame 13A of the motor 13. The motor 13 is covered with the cover 14 by fitting it in the formed circumferential groove-shaped groove 13a, and the assembly is completed.

As described above, the cover 14 is not directly attached to the case 11, but is attached to the frame 13A of the motor 13, so that a flange for attaching to the attachment opening 11a of the case 11 is unnecessary. Therefore, the cover 14 does not depend on the size of the mounting opening 11a of the case 11, and may be configured according to only the size of the motor 13. Therefore, the case 11 can be downsized.

Further, in the above embodiment, the groove portion 13a formed in the frame 13A of the motor 13 is formed in a circumferential groove shape at a plurality of locations on the outer periphery of the frame 13A, and the degree of freedom in selecting the fitting position with respect to the frame 13A is increased. Enlarge the claws 14 of the cover 14
Since a can be fitted, the same cover 14 can be shared even if the mounting positions of the cooling pipe 19 or the power supply connector 17 on the motor 13 are different.

In order to drive the blower B, each switch provided on the instrument is actuated. First, either the outside air intake 21 or the inside air intake 22 is opened by switching the intake door. , Close the other. Next, when the motor 13 is started, the fan 12 in the case 11 connected to the motor 13 is driven to take in air from either the outside air intake 21 or the inside air intake 22 which is in the open state. This wind is blown from the blower port 11b into the vehicle compartment through a duct (not shown) or the cooling unit and the duct. Further, a part of the wind is blown from the pipe outlet 11d through the cooling pipe 19 to the motor 13 in the cover 14, so that the motor 13 is prevented from overheating.

In the above embodiment, the groove 13a is formed in a predetermined range on the outer circumference of the frame 13A of the motor 13, but the invention is not limited to this, and it may be formed in a circumferential groove shape over the entire outer circumference. .

Further, FIG. 5 shows another embodiment in which the groove 23a is formed in the axial direction by bending a part of the groove 23a on the end side of the frame 23A of the motor 23 in the radial direction,
Further, the claw portion 24a is formed on the cover 24 at a position corresponding to the groove portion 23a. A frame cover 23c is fixed to the bent piece 23b via a screw 23d.

[Structure of Invention]

As is clear from the above description, according to the present invention, it is possible to securely engage and disengage the cover by the engaging portion and the locking portion, firmly engage, easily mount, and reduce the thickness of the cover. . That is, if the engaging portion is provided on the opening side of the cover,
Although the engagement force drops due to the existence of the pipe introduction hole, the engagement portion of the present invention is located on the inner peripheral surface of the other end side and is a rigid portion of the cover itself, which enables strong engagement. Also, when the engaging part is on the opening side, the cover must be inserted so that the engaging part and the motor do not interfere with each other, and the other end side of the cover pushes and the force is transmitted to one end side to engage. Although the mounting is complicated, the present invention in which the engaging portion is located on the other end side does not hinder the engaging portion from being inserted into the motor, and the pressing force to the cover is also different. It can be directly transmitted on the end side and easily engaged and mounted. Further, the pressure at the time of mounting the cover is not transmitted from the other end of the cover to the one end opening, so that the cover itself can be thin, and the size can be further reduced.

Further, since the pressing force at the time of mounting the cover is not transmitted from the other end side of the cover to the one end opening, the cover itself can be thin, and the size can be further reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a vehicle blower motor cover according to the present invention, FIG. 2 is an overall side view of the same, FIG. 3 is a sectional view of the same main portion, and FIG. 4 is the same. Perspective view of part, fifth
FIG. 7 is an exploded perspective view of another embodiment, FIG. 6 is an exploded perspective view of a conventional example, and FIG. 7 is an overall side view of the same. B …… Blower 11 …… Case, 11a …… Mounting port 12 …… Fan, 13 …… Motor 13A …… Frame, 14 …… Cover

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Reference 55-19071 (JP, U)

Claims (1)

[Claims] 1. A blower motor for a vehicle, comprising a cover for covering a motor, the motor being connected to a fan housed in the case through a mounting opening formed in the case to be driven, and being fixed to the case. Is formed in a tubular shape with one end open, has a pipe introduction hole extending from the opening at one end toward the other end, has an engaging portion on the inner peripheral surface on the other end side, and has the engaging portion on the front end side of the motor. A locking portion is provided that locks the joint portion with the pressing force from the other end of the cover, and when the cover covers the motor, the engaging portion is locked by the locking portion, and at the same time from the case. A cover for a blower motor for a vehicle, wherein an extending cooling pipe penetrates the pipe inlet hole.