JP2009292216A - Mounting structure and mounting method for air blower for cooling high voltage unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure and a mounting method for an air blower for cooling a high voltage unit, allowing singly attaching and detaching the air blower for higher maintenability and improving the ease of mounting. <P>SOLUTION: An air duct 2 is connected to a base 3 in the connection direction perpendicular to the direction of its connection to the air blower 1, and the air blower 1 is provided with a first mounting bracket 12 and a second mounting bracket 13 fixed to the base 3 via vibration absorbing members 23, 17, respectively. The first mounting bracket 12 is disposed removably with respect to the vibration absorbing member 23 in the same direction as the direction of connection to the air feeding duct 2, and the second mounting bracket 13 is disposed with respect to the vibration absorbing member 17 in the direction restricting the movement of the air blower 1 in its connection direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a mounting structure and a mounting method for a high-power unit cooling blower.

Conventionally, a hybrid vehicle or the like has been mounted with a battery for driving, an inverter circuit, and the like as a high-power unit, and since these generate heat and become high temperature, there is a technology for guiding the wind of the blower through the air duct and cooling it. It is publicly known (see Patent Documents 1 and 2).
In general, the blower and the air supply duct are each installed and fixed from above on a base such as a battery pack or a vehicle body floor.
JP 2006-298141 A JP 2005-205953 A

However, in the conventional invention, there is a problem that the blower cannot be detached alone and the maintainability is poor.
In addition, there are many bolt fastening points with the base in the blower and the sending machine duct, and there is a problem that the mounting workability is poor.

  The present invention has been made in order to solve the above-described problems, and the object of the present invention is to improve the maintainability while allowing the blower to be detached and installed at the same time, and to improve the mounting workability. It is providing the attachment structure and attachment method of the blower for cooling a strong electric unit which can do.

  In invention of Claim 1, it is an attachment structure of the air blower, the air supply duct connected to this air blower, which guides air to the high power unit, and the base for fixing the air blower, wherein the air supply duct is A first mounting bracket and a second mounting bracket are provided that are connected to the base in other connection directions orthogonal to the direction of connection with the blower, and are respectively fixed to the base via the vibration absorbing member. The first mounting bracket is detachably attached to the vibration absorbing member in the same direction as the connection direction with the air supply duct, and the second mounting bracket is a direction for restricting movement of the blower in the connection direction. It is provided with respect to a vibration-absorbing member.

  The invention according to claim 5 is an attachment method of a blower, an air supply duct that is connected to the blower and guides air to the high voltage unit, and a base that fixes the blower, and the air supply duct Connecting the fan to the base from above, and sliding the fan in the horizontal direction to connect to the air supply duct, and at the same time, absorbing the vibration formed by fixing the slit formed in the first mounting bracket of the fan to the base The step of fitting and fixing to the member and the step of fixing the second mounting bracket of the blower to the base via the vibration absorbing member in a direction that restricts the movement of the blower in the horizontal direction are performed in this order. Features.

  According to the present invention, it is possible to attach and detach the blower alone to improve the maintainability, and at the same time, it is possible to improve the mounting workability.

  Embodiments of the present invention will be described below with reference to the drawings.

Example 1 will be described below.
1 is an exploded perspective view of the blower side and the base side of the first embodiment, FIG. 2 is a perspective view thereof, FIGS. 3 and 4 are perspective views for explaining the connection between the blower and the air supply duct of the first embodiment, and FIG. FIG. 6 is a cross-sectional view taken along line S6-S6 of FIG.
FIG. 7 is a cross-sectional view of a vibration absorbing member corresponding to the first mounting bracket of the first embodiment, and FIGS. 8 to 14 are views for explaining a method for mounting the blower of the first embodiment.

First, the overall configuration will be described.
As shown in FIGS. 1 and 2, the first embodiment includes a blower 1, an air supply duct 2, a base 3, a high-power unit 4, and the like.

  As shown in FIGS. 3 and 4, the blower 1 is a so-called centrifugal fan, and includes a case 5, an impeller 6 accommodated in the case 5, a motor 7 that rotates the impeller 6 (see FIGS. 11 and 12), and the like. It is composed of

The case 5 is composed of a plate-like lid 8 and a substantially vessel-like case body 9 fastened to each other by a plurality of screws 5a, and has a substantially p-type in a plan view.
The case 5 is provided with an intake port 10 in the axial direction and an exhaust port 11 in the radial direction.
Specifically, the air inlet 10 is a through-hole penetrating upward at the center position of the lid 8, and a cylindrical hood 8 a is provided on the periphery of the air inlet 10 for the purpose of preventing entry of foreign matter into the case 5. ing.
The exhaust port 11 has a quadrangular cross section from the side of the case body 9 and projects outward in a cylindrical shape.
The exhaust port 11 is disposed at a position where the diameter of the case 5 is gradually increased outward from the inside of the case 5, and the expanded shape of the case 5 is designed based on the flow of air inside the case 5. The speed and the air flow rate of the airflow discharged from the airflow 11 are made uniform.

Further, a first mounting bracket 12 and a second mounting bracket 13 for fixing the blower 1 to the base 3 are respectively projected downward from the outer peripheral portion of the case body 9.
The first mounting bracket 12 is provided at two positions in a position close to the exhaust port 11 side and a position spaced in the opening direction, as well as a leg portion 14 extending downward from the outer peripheral portion of the case body 9, A slit 15 having a semi-long hole shape opened from the bottom surface of the leg portion 14 toward the exhaust port 11 is provided.

The second mounting bracket 13 is arranged at a position that forms the apex of a substantially equilateral triangle with the two first mounting brackets 12 on the outer peripheral portion of the case 5, and is refracted in a substantially L shape from the outer peripheral portion of the case body 9. Leg 16 is provided.
A vibration absorbing member 17 made of an elastic material such as rubber is attached to the side wall 16a having an L-shaped cross section of the leg portion 16.
Specifically, as shown in FIGS. 5 and 6, the side wall 16 a of the leg portion 16 is formed with a slit 16 b that is opened downward in a substantially long hole shape, and a substantially cylindrical vibration absorbing member 17 is formed here. A stepped portion 17a that is annularly recessed in the outer peripheral portion is fitted and fixed from below.

The impeller 6 includes a substantially conical hub 6a, a bottom plate (not shown) formed integrally with the bottom portion of the hub, and a plurality of rotor blades 6b standing upright with the bottom plate.
The hub 6a is connected to a center shaft (not shown) of the motor 7 by a bolt B1 provided at the apex portion.

  As a result, the blower 1 causes the axial air flow that has flowed into the case 5 through the air inlet 10 by the rotation of the impeller 6 driven by the motor 7 to flow along the radial direction of the impeller 6, and then the exhaust Air is supplied from the mouth 11.

As shown in FIGS. 3 and 4, the air supply duct 2 has a blower side connection port 18 connected to the exhaust port 11 of the blower 1 and a base side connection port 19 connected to the base 3 described later. It is formed in a tubular shape.
The blower side connection port 18 has a rectangular cross section with a predetermined length and is opened in the horizontal direction, and has an inclined inclined portion 20 whose opening end becomes lower as it goes downward.
On the other hand, the base side connection port 19 has a shape whose diameter is gradually expanded from the blower side connection port 18 to a cross-sectional shape flattened in the vertical direction, and is opened obliquely downward.
In addition, the opposing side wall of the blower side connection port 18 of the air supply duct 2 is formed with a locking portion 18a that bulges outward in a bag shape, and corresponds to the locking portion 18a in the exhaust port 11 of the blower 1. A claw portion 11a is formed at a position where the air outlet duct 2 is inserted, and the exhaust port 11 of the blower 1 is inserted inside the blower side connection port 18 of the air supply duct 2 so that each claw portion 11a is locked to the corresponding locking portion 18a. Thus, both of them can be connected.
Furthermore, two brackets 21 each having a clip insertion hole 21 a are provided on the outer peripheral portion of the base side connection port 19 of the air supply duct 2.

As shown in FIGS. 1 and 2, the base 3 is a vehicle body floor in a trunk room at the rear of the vehicle, and a high-power unit 4 is accommodated below the floor 3.
An insertion hole 22 is formed in the base 3 at a position corresponding to the base side connection port 19 of the air supply duct 2 so as to penetrate the high power unit 4 side.
A vibration absorbing member 23 made of an elastic material such as rubber is fixed to the base 3 at a position corresponding to each first mounting bracket 12 of the blower 1.
Specifically, as shown in FIG. 7, each vibration absorbing member 23 is formed in a cylindrical shape having a stepped portion 23 a that is annularly recessed in the outer peripheral portion, and in the center hole 23 b. The bolt B <b> 2 passes through and is fastened to a screw hole 24 formed in the base 3, thereby being fixed to the base 3.

  A step portion 25 having a height difference is formed at a position corresponding to the second mounting bracket 13 of the blower 1 on the base 3, and a plate-like fixing portion having a screw hole 26 a so as to straddle the step portion 25. 26 is erected.

  Furthermore, fixing holes 27 penetratingly formed on the high power unit 4 side are provided at positions corresponding to the clip insertion holes 21a of the brackets 21 of the air supply duct 2 in the base 3.

The high-power unit 4 is a battery that supplies electricity to an electric motor (mainly a traveling motor) such as a hybrid bicycle, and similarly to known ones, a nickel cadmium battery, a nickel hydride battery, or a lithium ion that can be repeatedly charged and discharged. Secondary batteries such as batteries are employed.
In addition, the space below the base 3 in which the high voltage unit 4 is accommodated communicates with the outside through an exhaust duct (not shown).

Next, the operation will be described.
<Blower installation>
In order to attach the blower 1 and the air supply duct 2 configured as described above to the base 3, first, as shown in FIGS. 8 and 9, the base side connection port 19 of the air supply duct 2 is inserted into the base 3. After being inserted into the hole 22 from above, the air supply duct 2 is fixed to the base 3 by inserting and fixing the clip 28 into the fixing hole 27 of the base 3 through the clip insertion hole 21 a of each bracket 21.
As shown in FIG. 10, the clip 28 according to the first embodiment inserts a substantially cylindrical main body portion 28a through the clip insertion hole 21a into the fixing hole 27, and then presses the piston-like pin portion 28b. A so-called push-on-fix type resin clip that is fixed by expanding the diameter of the main body 28a is employed.
The clip 28 may be replaced with a screw or a bolt.

Next, as shown in FIGS. 11 and 12, the blower 1 is horizontally slid to the air supply duct 2 side above the base 3, and the blower 1 is placed inside the blower side connection port 18 of the air supply duct 2. The exhaust port 11 is inserted, and the claw portions 11a are locked to the corresponding locking portions 18a of the air supply duct 2 to connect them.
In addition, as shown in FIG. 13, the step portions 23 a of the vibration absorbing member 23 corresponding to the slits 15 of the first mounting brackets 12 are fitted and fixed.
Accordingly, each first mounting bracket 12 can be fixed to the base 3 via the vibration absorbing member 23.

At this time, when the inclined portion 20 of the blower side connection port 18 of the air supply duct 2 slides on the exhaust port 11 of the blower 1, the connection workability between them can be improved.
In addition, since the movement of the first mounting bracket 12 is properly guided, it is fitted with high accuracy while sliding the step portion 23a of the vibration absorbing member 23 corresponding to the slit 15 of each first mounting bracket 12 thereafter. Can be made.

Finally, as shown in FIG. 14, the bolt B <b> 3 is inserted through the center hole 17 b of the vibration absorbing member 17 of the second mounting bracket 13 of the blower 1 and screwed into the screw hole 26 a of the fixing portion 26.
Thereby, the second mounting bracket 13 can be fixed to the base 3 via the vibration absorbing member 23.

If necessary, the vibration absorbing member 23 is pressed and deformed with the base 3 by tightening the bolt B1 of the vibration absorbing member 23 fitted to the first mounting bracket 12 as necessary. The holding force of the mounting bracket 12 is improved.
Or the clearance gap between the step parts 23a of the vibration absorption member 23 is previously made smaller than the thickness of the slit 15, and the slit 15 is fitted to the step part 23a in the press-fitted state.

<Positioning and fixing the blower>
The blower 1 can be fixed in a state where the vertical direction of the blower 1 and the horizontal direction excluding the connection direction with the air supply duct 2 are positioned by fixing the first mounting bracket 12 and the base 3.
Further, by fixing the second mounting bracket 13 and the base 3, it can be fixed in a state where the movement in the vertical direction of the blower 1 and the connection direction of the blower 1 in the connection direction with the air supply duct 2 is regulated and positioned. The blower 1 can be easily and reliably fixed in a state where the blower 1 is accurately positioned.

Further, the blower 1 can be supported and stably fixed at three points of the first mounting bracket 12 and the second mounting bracket 13.
Moreover, since the bolt fastening work point is provided at one place on the second mounting bracket 13, the number of parts and work processes can be reduced as compared with the case where the work is performed at three places.

<Blower maintenance>
The blower 1 fixed to the base 3 slidably moves the blower 1 away from the air supply duct 2 after removing the bolt B3 from the screw hole 26a of the fixing portion 26 and releasing the fixing of the second mounting bracket 13. The first mounting bracket 12 can be released from the fixing operation, whereby the blower 1 can be easily detached upward alone.
Therefore, maintenance inspection and repair replacement of the blower 1 can be facilitated, and maintainability can be improved.
In addition, since the vibration absorbing member 23 that slides and fits into the slit 15 of the first mounting bracket 12 is fixed to the base 3 with the bolts B <b> 2, there is no possibility of dropping off when the blower 1 is detached.

<Operation of blower>
The blower 1 configured as described above is configured so that the blower 1 is configured so that the air in the trunk room or the vehicle compartment that flows into the case 5 through the intake port 10 by the rotation operation of the impeller 6 driven by the motor 7 is the diameter of the impeller 6. After flowing along the direction, the high-power unit 4 can be cooled by introducing it into the high-power unit 4 from the exhaust port 11 via the air supply duct 2 and functions as a blower.
The air after cooling the high voltage unit 4 is discharged to the outside or the like by an exhaust duct (not shown).

Next, the effect will be described.
As described above, in the invention of the first embodiment, the blower 1, the air supply duct 2 that is connected to the blower 1 and guides the high-power unit 4, and the base 3 that fixes the blower 1 are provided. In the mounting structure, the air supply duct 2 is connected to the base 3 in another connection direction orthogonal to the connection direction with the blower 1, and the blower 1 is connected to the blower 1 via vibration absorbing members 23 and 17, respectively. A first mounting bracket 12 and a second mounting bracket 13 fixed to the base 3 are provided, and the first mounting bracket 12 can be attached to and detached from the vibration absorbing member 23 in the same direction as the connection direction with the air supply duct 2. The second mounting bracket 13 is provided to the vibration absorbing member 17 in a direction that restricts movement of the blower 1 in the connecting direction.
As a result, the blower 1 can be detached and attached to improve the maintainability, and at the same time, the attachment workability can be improved.

  In addition, the first mounting bracket 12 is provided with a slit 15 that opens in the same direction as the connection direction with the air supply duct 2, and the base 3 is a vibration absorber that can be attached to and detached from the slit 15 to be detachable. Since the member 23 is fixed, the first mounting bracket 12 can be attached to and detached from the vibration absorbing member 23 by the operation of connecting the blower 1 to the air supply duct 2.

  Moreover, while forming the connection part of the air blower 1 and the air supply duct 2 (exhaust port 10 and the air blower side connection port 18) each in a cylindrical shape, the opening edge part of the air blower side connection port 18 is formed in inclination, Since the exhaust port 10 of the blower 1 is inserted and overlapped in the blower side connection port 18 of the air supply duct 2 and overlapped, the connection workability between the blower 1 and the air supply duct 2 can be improved.

Further, since the high-power unit 4 is a battery for a traveling motor, it is suitable to be applied to a battery for a traveling motor mounted in a narrow installation space such as a trunk room.
In addition, since the centrifugal fan is employed in the first embodiment, the installation space in the vertical direction can be further reduced.

  In addition, it is an attachment method of the blower 1, the air supply duct 2 that is connected to the blower 1 and guides the high-power unit 4, and the base 3 that fixes the blower 1. The step of connecting to the base 3 from above, and the fan 1 is slid in the horizontal direction and connected to the air duct 2, and at the same time, the slit 15 formed in the first mounting bracket 12 of the fan 1 is fixed to the base 3. Fitting and fixing to the vibration absorbing member 23 and fixing the second mounting bracket 13 of the blower 1 to the base 3 via the vibration absorbing member 17 in a direction to restrict the movement of the blower 1 in the horizontal direction. However, since it is performed in this order, the blower 1 can be attached to the base 3 by a simple method.

Although the embodiments have been described above, the present invention is not limited to the above-described embodiments, and design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.
For example, the material and detailed shape of each component described in the first embodiment can be set as appropriate.
Similarly, the number of installations and installation positions of both brackets 12 and 13 can be set as appropriate.
Further, the timing of fitting and fixing with the vibration absorbing member 23 in the two second mounting brackets 13 may be different.

Further, the high power unit 4 is not limited to the battery of the motor for traveling, but may be applied to an inverter circuit or the like.
The base 3 is not limited to the vehicle body floor, and may be a battery pack in which a battery module is accommodated.
Furthermore, the position and relative position where the blower and the battery are provided can be set as appropriate. For example, both of them may be arranged at positions separated via the air supply duct 2.

It is a disassembled perspective view of the fan side and base side of Example 1. It is a perspective view of the air blower side and base side of Example 1. It is a perspective view explaining the connection of the air blower and air supply duct of Example 1. FIG. It is a front view of the 2nd mounting bracket of Example 1. FIG. It is a front view of the 2nd mounting bracket of Example 1. FIG. It is sectional drawing in the S6-S6 line of FIG. 6 is a cross-sectional view of a vibration absorbing member corresponding to the first mounting bracket of Example 1. FIG. It is a figure explaining the attachment method of the air blower of Example 1. FIG. It is a figure explaining the attachment method of the air blower of Example 1. FIG. It is a figure explaining the attachment method of the air blower of Example 1. FIG. It is a figure explaining the attachment method of the air blower of Example 1. FIG. It is a figure explaining the attachment method of the air blower of Example 1. FIG. It is a figure explaining the attachment method of the air blower of Example 1. FIG. It is a figure explaining the attachment method of the air blower of Example 1. FIG.

Explanation of symbols

B1, B2, B3 Bolt 1 Blower 2 Air supply duct 3 Base 4 High power unit 5 Case 5a Screw 6 Impeller 6a Hub 6b Rotor blade 7 Motor 8 Lid 8a Hood 9 Case body 10 Inlet 11 Exhaust 11a Claw 12 First Mounting bracket 13 Second mounting bracket 14 Leg portion 15 Slit 16 Leg portion 16a Side wall 16b Slit 17 Vibration absorbing member 17a Step portion 17b Center hole 18 Blower side connection port 18a Locking portion 19 Base side connection port 20 Inclined portion 21 Bracket 21a Clip insertion hole 22 Insertion hole 23 Vibration absorbing member 23a Step portion 23b Center hole 24 Screw hole 25 Step portion 26 Fixing portion 26a Screw hole 27 Fixing hole 28 Clip 28a Body portion 28b Pin portion

Claims (5)

An attachment structure of a blower, an air supply duct connected to the blower and guiding wind to the high power unit, and a base for fixing the blower,
The air supply duct is connected to the base in another connection direction perpendicular to the connection direction with the blower,
The blower is provided with a first mounting bracket and a second mounting bracket that are each fixed to a base via a vibration absorbing member,
The first mounting bracket is detachably attached to the vibration absorbing member in the same direction as the connection direction with the air supply duct,
The structure for mounting a blower for cooling a high-power unit, wherein the second mounting bracket is provided to the vibration absorbing member in a direction in which movement of the blower in the connection direction is restricted. In the mounting structure of the blower for cooling a strong electric unit according to claim 1,
The first mounting bracket is provided with a slit that opens in the same direction as the connection direction with the air supply duct,
An attachment structure for a cooling fan for cooling a high-power unit, wherein a vibration absorbing member that can be attached to and detached from the slit and attached to and detached from the slit is fixed to the base. In the mounting structure of the high voltage unit cooling fan according to claim 1 or 2,
While forming the connecting portion between the blower and the air supply duct in a cylindrical shape, one of the opening end portions of both the connecting portions is formed in an inclined shape,
An attachment structure of a cooling fan for cooling a high-power unit, wherein one of the connecting portions of the blower and the air supply duct is inserted into the other and overlapped and fixed. In the mounting structure of the high-power unit cooling blower according to any one of claims 1 to 3,
An attachment structure of a cooling fan for cooling a high-power unit, wherein the high-power unit is a battery of a traveling motor or an inverter circuit. A mounting method of a blower, an air supply duct connected to the blower and guiding wind to the high-power unit, and a base for fixing the blower,
Connecting the air supply duct to the base from above;
At the same time as sliding the blower in the horizontal direction and connecting to the air duct, fitting and fixing the slit formed in the first mounting bracket of the blower to the vibration absorbing member fixed to the base;
A step of fixing the second mounting bracket of the blower to the base via a vibration absorbing member in a direction that restricts the movement of the blower in the horizontal direction is performed in this order. Mounting method.

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