JP4122981B2 - Blower unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a blower unit, and is effective when applied to a vehicle blower unit that is mounted on a vehicle front end and blows cooling air to a heat exchanger such as a radiator or a condenser.
[0002]
[Problems to be solved by the prior art invention]
In recent years, a vehicle having a crushable zone (crushing allowance) for absorbing a collision force on the front end side of the vehicle has been researched and developed in order to improve the collision safety of the vehicle.
[0003]
By the way, since the vehicle blower unit is mounted on the front end of the vehicle, a collision force acts with the front end side body such as the front end panel at the time of a collision. Since it is harder than that, it does not deform in the same way as a vehicle front end body such as a front end panel during a collision.
[0004]
For this reason, since the collision force cannot be absorbed by the blower unit, the substantial crushable zone becomes small, and it is difficult to ensure high collision safety.
[0005]
In view of the above points, the present invention firstly provides a novel blower unit that is different from the conventional one, and secondly, it aims to increase the impact absorption capability of the blower unit.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, a fan (11) for blowing air to a heat exchanger, a motor (12) for rotating the fan (11), and a motor (12) are provided. A plurality of motor stays (13) extending in a direction substantially orthogonal to the rotation axis of the motor and supporting the motor (12). The motor stay (13) includes a rotation axis direction of the motor (12). A plurality of bending induction means (15) are provided for bending the motor stay (13) so as to be inclined with respect to the ventilation surface of the heat exchanger when an external force is applied to the motor stay (13) from a substantially parallel direction. The bending inducing means (15) on one side of the bending inducing means (15) located at a substantially symmetrical position across a reference direction (L) passing through the rotating shaft of the motor (12) and orthogonal to the rotating shaft direction. The motor steering is directed toward one end in the rotational axis direction. (13) provided so as to bend the curved induction means on the other side (15) is provided so as to bend the motor stay (13) toward the rotation axis direction end side, bending induced means ( 15) is configured by thinning the motor stay (13) so as to cut out a part of the motor stay (13). Further, the bending inducing means (15) is located substantially symmetrically across the reference direction (L). One of the bending induction means (15) is cut out at the other end in the rotation axis direction, and the other bending induction means (15) is cut out at one end in the rotation axis direction. To do.
[0007]
Thus, when an external force is applied to the motor stay (13) from a direction substantially parallel to the rotational axis direction of the motor (12), as shown in FIG. 3 to be described later, the reference direction (L), that is, perpendicular to the paper surface. The motor stay (13) is deformed so that the motor (12) rotates around a certain axial direction.
[0008]
Therefore, the motor (12) rotates around the reference direction (L) in the event of a collision, so that a larger crushable zone is ensured than when the motor (12) is simply displaced in the external force direction without rotating. can do.
[0009]
In the second aspect of the invention, the bending inducing means (15) for bending the motor stay (13) toward one end side in the rotation axis direction and the bending for bending the motor stay (13) toward the other end side in the rotation axis direction. The induction means (15) and the induction means (15) are provided as a set, and at least one set of the induction means (15) is provided for each motor stay (13).
[0010]
Thereby, since the motor stay (13) curves symmetrically with respect to the reference direction (L), the motor (12) can be reliably rotated around the reference direction L when a collision force is applied.
[0011]
According to the third aspect of the present invention, the plurality of bending induction means (15) existing on one side among the bending induction means (15) at substantially symmetrical positions with respect to the reference direction (L) include the reference direction ( It is located on a reference line (L1) parallel to L).
[0012]
Thereby, since the motor stay (13) curves symmetrically with respect to the reference direction (L), the motor (12) can be rotated more reliably around the reference direction L when a collision force is applied.
[0016]
Incidentally, the reference numerals in parentheses of each means described above are an example showing the correspondence with the specific means described in the embodiments described later.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
In the present embodiment, the present invention is applied to a vehicle blower unit that is mounted at a vehicle front end and blows cooling air to a heat exchanger such as a radiator or a condenser. FIG. 1 shows a blower according to this embodiment. FIG. 2 is a schematic view of the unit 10, FIG. 2 is a view as seen from an arrow A in FIG. 1, and FIG.
[0018]
In FIG. 1, a fan 11 is an axial fan that blows cooling air to a radiator 21 and a condenser 22, and is a driving unit that rotates the motor 12 fan 11. In this embodiment, the motor 12 is a rotating electric machine, that is, an electric motor. Although a motor is employed, other driving means such as a hydraulic motor may be used.
[0019]
The axial fan is a fan in which gas passes through the impeller in the axial direction as described in JIS B 0132 No. 1012 and the like.
[0020]
The plurality of motor stays 13 are beam-like members that extend in a direction substantially orthogonal to the rotation shaft 12a of the motor 12 and support the motor 12. In the present embodiment, as shown in FIG. It extends radially at equal intervals and is integrated with the fan shroud 14.
[0021]
The fan shroud 14 forms a duct from the heat exchanger to the fan 11 by closing a gap between the heat exchanger such as the radiator 21 and the condenser 22 and the fan 11, so that the air flow induced by the fan 11 exchanges heat. It suppresses flowing around the vessel.
[0022]
In the present embodiment, the motor stay 13 and the fan shroud 14 are integrally formed of resin so as to be integrated with each other. However, the present invention is not limited to this. , 14 may be integrated by fastening means such as screws.
[0023]
Further, the motor stay 13 is thinned so that a part of the motor stay 13 is cut out, so that an external force (collision) is applied to the motor stay 13 in a direction substantially parallel to the rotation axis direction of the motor 12, that is, from the vehicle front side. As shown in FIG. 3, thin portions 15 serving as bending induction means for bending the motor stay 13 so as to be convex in a direction parallel to the rotating shaft 12a are provided at a plurality of locations. ing.
[0024]
And as shown in FIG. 1, the thin part of one side among the thin parts 15 in the substantially symmetrical position across the reference direction L (see FIG. 2) passing through the rotation shaft 12a of the motor 12 and orthogonal to the rotation axis direction. 15, that is, the thin portion 15 above the rotation shaft 12 a in FIG. 1 and above the reference direction L in FIG. 2 bends the motor stay 13 toward one end side in the rotation shaft direction. The thin portion 15 on the other side, that is, the lower side of the rotating shaft 12a in FIG. 1, and the thinner portion 15 on the lower side of the reference direction L in FIG. The motor stay 13 is curved.
[0025]
Specifically, the thin portion 15 on one side of the thin portions 15 located substantially symmetrically across the reference direction L is thinned so that the other end in the rotation axis direction is cut away as shown in FIG. The thin portion 15 on the other side is thinned so as to cut out one end in the rotation axis direction.
[0026]
At this time, in this embodiment, the thin portion 15 that curves the motor stay 13 toward one end side in the rotation axis direction and the thin portion 15 that curves the motor stay 13 toward the other end side in the rotation axis direction are one. Since at least one thin portion 15 is provided for each motor stay 13 as a set, the portion cut out in a substantially V shape is the longitudinal direction of the motor stay 13, that is, the motor 12 as shown in FIG. Are formed in a zigzag pattern from the upper end side of the motor stay 13 on the upper side to the lower end side of the motor stay 13 on the lower side of the motor 12.
[0027]
In FIG. 1, the thin portion 15a and the thin portion 15b form a pair, and the thin portions 15a and the thin portions 15b are substantially symmetrical with respect to the reference direction L with the rotating shaft 12a interposed therebetween. It becomes the thin part 15 which exists in.
[0028]
Next, the function and effect of this embodiment will be described.
[0029]
The thin portion 15 on one side of the thin portions 15 that are substantially symmetrical with respect to the reference direction L that passes through the rotation shaft 12a of the motor 12 and that is orthogonal to the rotation shaft direction is directed toward one end of the rotation shaft direction. The thin wall portion 15 on the other side is provided so as to curve the motor stay 13 toward the other end side in the rotation axis direction, so that the direction is substantially parallel to the rotation axis direction of the motor 12. That is, when an external force (collision force) is applied to the motor stay 13 from the front side of the vehicle, the motor 12 rotates in the reference direction L, that is, the axial direction perpendicular to the paper surface, as shown in FIG. The stay 13 is deformed.
[0030]
Therefore, even if the motor 12 is not deformed due to a collision, the motor 12 rotates around the reference direction L, so that a larger crushable zone is formed compared to a case where the motor 12 does not rotate and is simply displaced in the external force direction. Can be secured.
[0031]
That is, if the motor 12 is simply displaced in the direction of external force without rotating, the motor 12 will collide with a rigid body such as the engine before the vehicle front end body such as the front end panel is sufficiently deformed. In this embodiment, the motor 12 rotates around the reference direction L and the motor 12 collides with a rigid body such as an engine. Since the vehicle front end side body such as the front end panel can be sufficiently deformed before the shock absorption, the shock absorbing ability can be enhanced.
[0032]
Further, as shown in FIG. 2, a plurality of thin portions 15 existing on one side among the thin portions 15 located substantially symmetrically with respect to the reference direction L are connected to a reference line L1 parallel to the reference direction L (see FIG. 2, the motor stay 13 bends symmetrically with respect to the reference direction L. Therefore, when a collision force is applied, the motor 12 is more reliably rotated around the reference direction L. be able to.
[0033]
Moreover, in this embodiment, since a big crushable zone can be ensured, it is especially effective when applied to a blower unit having a motor whose axial dimension is larger than the diameter dimension. Needless to say, the present invention may be applied to a blower unit having a flat motor having a smaller axial dimension than a diameter dimension.
[0034]
Since the thin portion 15 is substantially symmetric with respect to the reference direction L, the plurality of thin portions 15 existing on the other side of the thin portions 15 at substantially symmetric positions with respect to the reference direction L are also the reference line. Needless to say, it is located on L1.
[0035]
(Other embodiments)
In the above-described embodiment, the reference direction L is substantially horizontal. However, the present invention is not limited to this. For example, the reference direction L may be substantially vertical.
[0036]
In the above-described embodiment, at least two thin portions 15 are provided for each motor stay 13, but the present invention is not limited to this. When at least two thin portions 15 are provided for each motor stay 13, the notched portions are formed in a zigzag shape along the longitudinal direction of the motor stay 13 with the motor 12 interposed therebetween. Become.
[0037]
Moreover, in the above-mentioned embodiment, although the thin part 15 was formed so that a part of motor stay 13 might be notched in substantially V shape, this invention is not limited to this.
[Brief description of the drawings]
FIG. 1 is a schematic view of a blower unit according to an embodiment of the present invention.
FIG. 2 is a view taken in the direction of arrow A in FIG.
FIG. 3 is a view showing a state where the blower unit according to the embodiment of the present invention is deformed.
[Explanation of symbols]
10 ... knit for blowing, 11 ... fan, 12 ... motor,
13 ... Motor stay, 14 ... Fan shroud, 15 ... Thin part.

Claims (3)

A fan (11) for blowing air to the heat exchanger ;
A motor (12) for rotating the fan (11);
A plurality of motor stays (13) extending in a direction substantially orthogonal to the rotation axis of the motor (12) and supporting the motor (12);
When the external force acts on the motor stay (13) from the direction substantially parallel to the rotation axis direction of the motor (12), the motor stay (13) is attached to the motor stay (13) . A plurality of bending induction means (15) for bending so as to be inclined with respect to the ventilation surface are provided,
The bending induction means (15) on one side of the bending induction means (15) at a substantially symmetrical position across the reference direction (L) passing through the rotation axis of the motor (12) and orthogonal to the rotation axis direction is: The motor stay (13) is provided to bend toward the one end side in the rotation axis direction, and the other bending induction means (15) is provided to the motor stay (13) toward the other end side in the rotation axis direction. ) To bend ,
The bending induction means (15) is configured by thinning the motor stay (13) so as to cut out a part of the motor stay (13).
Further, the bending induction means (15) on one side of the bending induction means (15) located substantially symmetrically across the reference direction (L) is cut off at the other end in the rotational axis direction, The other side bending induction means (15) is a blower unit characterized in that one end in the rotational axis direction is cut out .   The bending induction means (15) for bending the motor stay (13) toward the one end side in the rotation axis direction and the bending induction means (for bending the motor stay (13) toward the other end side in the rotation axis direction. 15. The blower unit according to claim 1, wherein the bending induction means (15) is provided at least one set for each motor stay (13).   A plurality of bending induction means (15) existing on one side among the bending induction means (15) at substantially symmetrical positions with respect to the reference direction (L) is a reference parallel to the reference direction (L). It is located on a line (L1), The ventilation unit of Claim 1 or 2 characterized by the above-mentioned.

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