JPH08127221A - Air conditioner for vehicle - Google Patents

Abstract

PURPOSE: To facilitate attachment/detachment to/from a scroll casing of a motor fixing member by fitting the motor fixing member to an opening of the scroll casing, and turning the motor fixing member with an outer projection being coincided with an inner projection to allow the elastic deformation of each projection respectively. CONSTITUTION: A multiblade fan 3 of an air conditioner for a vehicle consists of a centrifugal fan 31, a motor 60 to drive the fan, and a scroll casing which stores the fan and the motor to form an air passage. The scroll casing consists of a bellmouth plate 32 to straighten the air flowing in from an inner air/outer air switching box, and a lower case 4 to discharge the air in the transverse direction. In addition, a motor fixing member 6 is added to the lower case 4. When the motor fixing member 6 is fitted to the lower case 4 in an attachable/detachable manner, the respective outer projections 7 are inserted between the inner projections 5 and turned to allow the respective elastic deformation of the upper and lower surface stopping projections 70, 71. This facilitates the attachment/detachment and improves the fabricability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improving the assemblability of a blower in a vehicle air conditioner.

[0002]

2. Description of the Related Art A vehicle air conditioner is equipped with a blower upstream of an air conditioning duct, and a multiblade blower 100 as shown in FIG. 6 is used as the blower. Multi-blade blower 100
Includes a centrifugal fan 105 arranged in a scroll casing 104 having an intake port 103 on the upper surface, and an inner / outer air switching box 102 for selectively taking in the inner / outer air from the upper portion by an inner / outer air switching door 101 on the upper surface. Be connected. The scroll casing 104 forms a ventilation path of the multiblade blower 100, and the centrifugal fan 105 is disposed so as to face the suction port 103 and rotates about an axis in the vertical direction. A motor 106 for rotating the centrifugal fan 105 is provided below the centrifugal fan 105 (see FIG. 7).

The scroll casing 104 has a suction port 1
Bell mouth plate 107 which is a top plate provided with 03.
And a lower case 108 having a blower port 109 for laterally discharging the intake air. The lower case 108 has a circular opening 110 on the bottom plate. The motor 106 is fixed to the motor fixing member 111.
11 is fastened to the lower case 108 by a screw screw 112.

[0004]

In the multi-blade blower having such a structure, the motor fixing member 111 has the inside case / outside air switching box 102 and the bell mouth plate 10 with respect to the lower case 108.
Since the mounting direction is opposite to that of 7, the lower case 108 must be turned upside down when mounting. Further, tightening with the screw screw 112 is required, and time and effort for loosening and tightening the screw screw 112 are required during maintenance. Therefore, it takes a lot of man-hours to assemble and remove. An object of the present invention is to provide a vehicle air conditioner in which the motor fixing member of the blower and the lower case can be easily attached and detached.

[0005]

The present invention includes an air conditioning duct for supplying conditioned air into a vehicle compartment, a scroll casing, a fan arranged in the scroll casing, and a motor for driving the fan. A blower that is mounted on an upstream portion of the air conditioning duct and that generates a flow of air that flows out into the vehicle compartment; and an inside / outside air switch that is connected to an intake port of the blower and selectively introduces air inside or outside the vehicle compartment In a vehicle air conditioner including a box and a temperature adjusting unit arranged in the air conditioning duct and adjusting a temperature of air flowing in the air conditioning duct, the blower includes a bottom plate of the scroll casing and the fan. It has a circular opening with a somewhat larger diameter, and an inner screw formed of an elastically deforming spiral inner protrusion is provided on the inner periphery of the circular opening. A motor fixing member that holds the motor is attached to form a screw plug that fits into the shape opening and is screwed, and the screw plug has an outer protrusion that elastically deforms. An air conditioner for a vehicle is adopted as a technical means, in which the inner protrusion is provided with an engaging means for engaging the outer protrusion and the inner protrusion at a predetermined screwing position.

According to the present invention, in the vehicle air conditioner of the technical means, the engaging means is provided on the outer ridge and is in contact with the upper end face and the lower end face of the inner ridge, respectively. A vehicle air conditioner, which is a protrusion that engages the outer ridge with the inner ridge, is adopted as the first embodiment.
The present invention relates to a vehicle air conditioner of technical means,
The engaging means is provided on the outer protruding strip side unevenness provided on the outer projecting strip, and is fitted to the outer projecting strip side unevenness on the inner projecting strip and engages the outer projecting strip with the inner projecting strip. The air conditioner for a vehicle, which is formed by the inner protrusion side unevenness, is adopted as the second embodiment.

In the air conditioner for a vehicle according to the technical means of the present invention, a plurality of the inner protrusions inclined with respect to the inner circumference of the circular opening are provided in a row, and the engaging means is A projection that is provided on the outer ridge and that abuts the upper and lower end surfaces of the adjacent inner ridges that sandwich the outer ridge and that engages the outer ridge with the inner ridge. An air conditioner for a vehicle is adopted as the third embodiment.

According to the present invention, in the vehicle air conditioner of the technical means, a plurality of the inner protrusions inclined with respect to the inner circumference of the circular opening are arranged in a row, and the engaging means is The inner protrusion-shaped irregularities provided on the inner protrusions and the inner protrusion-side irregularities of the adjacent inner protrusions that are provided on the outer protrusions and sandwich the outer protrusion, and the outer protrusions are fitted to each other. An air conditioner for a vehicle, which is formed by an outer protrusion side unevenness that engages with the inner protrusion, is adopted as the fourth embodiment. The present invention is the technical means according to the first to fourth embodiments, wherein the inner protrusion of the blower is a rib for closely contacting the outer protrusion with a peripheral edge of the upper surface of the circular opening excluding a root of the inner protrusion. The vehicle air conditioner provided with is adopted as the fifth embodiment.

[0009]

[Action]

[Operation of Claim 1] The screw plug of the motor fixing member is fitted into the circular opening of the scroll casing from above or below, and the motor fixing member is rotated with the outer ridge aligned with the inner ridge. As a result, the outer ridges and the inner ridges are elastically deformed to have an easily rotatable shape, and the outer ridges rotate to the screwing position. Then, the acting force between the outer ridge and the inner ridge, which retains the elastic deformation, is not in the screwing position, and the outer ridge and the inner ridge restore their original shapes. Further, the engaging means generates a blocking force for blocking the rotation of the outer protrusion by the unique shape, and the outer protrusion engages with the inner protrusion.

When the screw plug engaged with the circular opening is rotated, the outer ridge and the inner ridge are elastically deformed so that the blocking force of the engaging means is lost and the ridge easily rotates. Then, the motor fixing member comes off above or below the scroll casing depending on the direction of rotation.

[Operation of Claim 2] The outer and inner ridges are elastically deformed while rotating and screwing. Then, at the screwing position, the outer protrusion and the inner protrusion recover their shapes, and the protrusions of the outer protrusion contact the upper end surface and the lower end surface of the inner protrusion. As a result, the outer protrusion is prevented from rotating and is restrained in the vertical direction, and the motor fixing member is engaged with the scroll casing. In addition, when the outer ridge is rotated and displaced with respect to the inner ridge, the blocking force that blocks the rotation of the protrusion due to elastic deformation disappears. If the outer ridge is rotated with respect to the inner ridge as it is, the motor fixing member becomes Remove from the scroll casing.

[Operation of Claim 3] The outer and inner ridges are elastically deformed while rotating and screwing. Then, at the screwing position, the outer and inner ridges recover their shapes, and the outer and inner ridge-side irregularities fit together. As a result, the outer protrusion is prevented from rotating and is restrained in the vertical direction, and the motor fixing member is engaged with the scroll casing. Further, when the outer ridge is rotated and displaced with respect to the inner ridge, the outer protrusion-side unevenness and the inner ridge-side unevenness, which are fitted by elastic deformation, are disengaged from each other, and the blocking force for preventing rotation is lost. When the outer ridge is rotated with respect to the inner ridge as it is, the motor fixing member comes off from the scroll casing.

[Operation of Claim 4] 1) Attachment of motor fixing member to scroll casing Insert the motor fixing member into the scroll casing from above, and insert each outer ridge between adjacent inner ridges. When turned in, the protrusions on the lower surface of the outer protrusion run up from the end face to the upper surface above the lower inner protrusion due to elastic deformation. Then, the outer ridges spirally descend while the protrusions on the lower surface are compressed. Furthermore, the protrusion on the upper surface abuts on the upper end surface of the inner protrusion on the upper side, and the acting force from the lower end of the inner protrusion on the lower side compressing the protrusion on the lower surface disappears. The shape is restored and abuts on the lower end surface of the lower inner protrusion. As a result, the outer protrusion is prevented from rotating and is restrained in the vertical direction, and the motor fixing member is engaged with the scroll casing.

When the motor fixing member is inserted into the scroll casing from below, the outer protrusions are inserted between the adjacent inner protrusions, and the scroll casing is rotated in the opposite direction from the case of being inserted from above. The elastic protrusion causes the protrusion on the upper surface to penetrate from the end face to the lower surface below the inner protrusion on the upper side. Then, the outer ridges spirally rise while the protrusions on the upper surface are compressed. Furthermore, the projection on the lower surface comes into contact with the lower end surface of the lower inner projection, and the acting force from the upper end of the upper inner projection that compressed the projection on the upper surface disappears. The shape is restored and abuts on the upper end surface of the upper inner protrusion. As a result, the outer protrusion is prevented from rotating and is restrained in the vertical direction, and the motor fixing member is engaged with the scroll casing.

2) Removal of the motor fixing member from the scroll casing When the engaged motor fixing member is rotated in the same direction as when the motor fixing member is inserted from above, the projection on the upper surface causes the upper end of the upper inner protrusion to move upward. It is compressed by receiving the acting force from the portion, and the blocking force that blocks the rotation of the outer ridge by the projection on the upper surface disappears. After that, the outer projecting strip spirally descends and the entire outer projecting strip is separated from the lower inner projecting strip, so that the upward force exerted on the outer projecting strip disappears and the motor fixing member falls downward. When the engaged motor fixing member is rotated in the same direction as when it is inserted from below, the projection on the lower surface receives the force from the lower end of the lower inner protrusion and is compressed, The blocking force for blocking the rotation of the outer ridge by the projection of is lost.

After that, the outer projecting strip spirally rises, and the entire outer projecting strip is separated from the upper inner projecting strip, so that the downward force exerted on the outer projecting strip disappears and the motor fixing member can be pulled upward.

[Operation of Claim 5] 1) Attachment of Motor Fixing Member to Scroll Casing When each outer ridge is inserted between adjacent inner ridges and elastically deformed and turned in, the outer ridges are screwed out. The ridges and the inner ridges recover their shapes so that the outer ridge-side irregularities and the inner ridge-side irregularities fit together. As a result, the outer protrusion is prevented from rotating and is restrained in the vertical direction, and the motor fixing member is engaged with the scroll casing.

2) Removal of Motor Fixing Member from Scroll Casing When the engaged motor fixing member is rotated, the outer ridge-side unevenness and the inner ridge-side unevenness that were fitted due to elastic deformation come off. The blocking force that blocks the rotation of the ridges disappears.

[Operation of Claim 6] The lower surface of the outer ridge is pressed against the upper surface of the inner ridge, and the ribs of the inner ridge are elastically or plastically deformed so that the lower surface of the outer ridge and the upper surface of the inner ridge are formed. Seal the gap.

[0020]

The air conditioner for a vehicle of the present invention can be assembled in the blower by simply turning the motor fixing member into the scroll casing from the upper side and the lower side, and by turning the motor fixing member to the upper side and the lower side. Detachable.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a vehicle air conditioner of the present invention will be described based on an embodiment shown in the drawings.

[Structure of Embodiment] Vehicle air conditioner 1
As shown in FIG. 2, the air-conditioning duct 10 is provided at one end thereof with an intake port A and at the other end with a blow-out port B into the vehicle interior, and is provided with an air conditioning duct 10 for sending conditioned air into the vehicle interior. An air blower 2 for generating an air flow toward the vehicle interior in the air conditioning duct 10 is mounted on the upstream side of the air conditioning duct 10, and a vehicle-mounted refrigerating device for cooling the air in the air conditioning duct 10 on the downstream side thereof. The evaporator 11 of is disposed. A condenser 1 using engine cooling water for heating the air from the evaporator 11 is provided downstream of the evaporator 11 in the air conditioning duct 10.
2 is provided, and an air mix damper 13 is rotatably attached to the inlet side of the condenser 12.

The air conditioner 1 for a vehicle includes the blower unit 2 which is operated by the electric power of a vehicle-mounted power source (generator and battery).
Air volume, cooling capacity of evaporator 11, condenser 12
Electronic control device (not shown) for controlling the operating state of each air conditioner such as the heating capacity of the air conditioner, the opening degree of the air mix damper 13, etc.
It has. As shown in FIGS. 1 and 2, the blower unit 2 has a centrifugal multiblade blower 3, and the multiblade blower 3 is provided with an inside / outside air switching box 20 for selectively taking in the inside / outside air from above. The inside / outside air switching box 20 has an inside air introducing port 21 for introducing the air inside the vehicle facing the side surface, and an outside air introducing port 22 for introducing the outside air of the vehicle inside is provided in the upper part. An inside / outside air switching damper 23 that selectively opens and closes the inlet 22 is rotatably attached.

The multi-blade blower 3 has a centrifugal fan 31 for sending air, a motor 60 connected to the centrifugal fan 31 to rotate the centrifugal fan 31, and a centrifugal fan 31 disposed inside to fix the motor 60. And a scroll casing 30 that forms an air passage. The centrifugal fan 31 is
It is provided with a large number of blades 36 arranged along the circumference and a boss portion 37 into which the rotating shaft portion 61 of the motor 60 is fitted. Motor 60
Includes a rotating shaft portion 61 that fits into the centrifugal fan 31.

The scroll casing 30 has a bell mouth plate 32 for rectifying the air flowing in from the inside / outside air switching box 20, and a bell mouth plate 32 attached to the upper part thereof for discharging the air from the inside / outside air switching box 20 laterally. And a case 4. A motor fixing member 6 that fixes the motor 60 to the lower case 4 is attached to the lower case 4. The bell mouth plate 32 is a substantially disc-shaped upper plate 33 attached to the upper part of the lower case 4, and an outlet that forms an upper wall of an air passage outlet that is integrally formed with a part of the upper plate 33 and sends out air laterally. And a wall 34. Further, the upper plate 33 includes a bell mouth 35 having a diameter slightly larger than that of the centrifugal fan 31.

The lower case 4 has a substantially disc-shaped lower plate 40 to which the motor fixing member 6 is attached, and a side wall portion 43 which is connected to the outer periphery of the lower plate 40 to support the bell mouth plate 32 and blows out air in the lateral direction. Consists of. The lower plate 40 is the lower plate 40.
An opening 41 that is concentric with the outer circumference circle is opened, and a plurality of elastically deformable inner ridges 5 for holding the motor fixing member 6 are provided on the inner circumference of the opening 41.

The inner ridges 5 project in a spiral shape in the vertical direction along the inner peripheral surface and are arranged in the inner peripheral direction. The upper end 51 of each inner protrusion 5 is the lower end 52 of the adjacent inner protrusion 5.
And an air gap 53 in an obliquely vertical direction are separated (see FIG. 3).
Further, the inner ridge 5 has a rib 54 (FIG. 4A) protruding upward to the peripheral edge of the upper surface excluding the root to the inner circumference in order to prevent air leakage between the motor fixing member 6 and the lower case 4. (See (b)) is provided. Further, an outlet lower wall 42 forming a lower wall of the air passage outlet is integrally formed on a part of the outer peripheral circle of the lower plate 40.

The side wall portion 43 is joined to the outer periphery of the lower plate 40 except for a part of the outer periphery thereof, the bell mouth plate 32 is attached to the upper edge thereof, and vertical side portions 44 are provided at both ends of a part of the outer periphery. It has a partial cylindrical side surface 45. A pair of outlet side walls 46 and 47 facing each other forming the side wall of the air passage outlet are integrally formed on each side portion 44. The motor fixing member 6 is an annular fitting portion 6 into which the motor 60 is fitted.
2 and a disc-shaped coupling portion 63 that is coupled to the lower portion of the fitting portion 62 and is coaxial with the motor 60. The outer peripheral portion of the coupling portion 63 is provided with the outer protrusions 7 that are elastically deformed by the same number as the inner protrusions 5 and are held between the inner protrusions 5 that are adjacent to each other and project in a spiral shape in the vertical direction along the outer periphery. ing.

The outer ridge 7 has a thickness sandwiched between the adjacent inner ridges 5, and its upper surface abuts the upper end surface 55 of the upper inner ridge 5 so that the outer ridge 7 spirals. It is provided with an upper surface blocking protrusion 70 that blocks downward movement. Further, on the lower surface of the outer protrusion 7, the lower end surface of the lower inner protrusion 5 is located at a position where the outer protrusion 7 contacts the upper surface blocking protrusion 70 with the upper end surface 55 of the upper inner protrusion 5. A lower surface blocking projection 71 is provided which abuts 56 and prevents the outer protruding strip 7 from spiraling upward.

[Operation of Embodiment] 1) Mounting of Motor Fixing Member 6 to Lower Case 4 The motor fixing member 6 is inserted into the lower case 4 from above, and the respective outer protrusions 7 are adjacent to each other. When it is inserted and turned in between, the lower surface blocking protrusion 71 rides up from the end face to the upper face above the lower inner protruding strip 5 by elastic deformation. Then, the outer protrusion 7 spirally descends while the lower surface blocking protrusion 71 is compressed. Further, the reaction force from the lower end portion 52 of the lower inner protrusion 5, which is in contact with the upper end surface 55 of the upper inner protrusion 5 while the upper surface prevention protrusion 70 is compressing the lower surface prevention protrusion 71, is generated. The lower surface blocking projection 71 restores its shape and contacts the lower end surface 56 of the lower inner protruding strip 5.

As a result, the outer ridge 7 is prevented from rotating and is restrained in the vertical direction, and the motor fixing member 6 is engaged with the lower case 4 (see FIG. 3). Further, the lower surface of the outer protruding ridge 7 is pressed against the upper surface of the lower inner protruding ridge 5, and the ribs 54 of the lower inner protruding ridge 5 are elastically or plastically deformed, so that the lower surface of the outer protruding ridge 7 and the lower inner protruding ridge 7 are protruded. Seal the gap between the top surface of Article 5. In addition, the motor fixing member 6 is inserted into the lower case 4 from below, the outer projecting strips 7 are inserted between the adjacent inner projecting strips 5, and the outer projecting strips 7 are rotated in the opposite manner to the case where they are inserted from above in the lower case 4. Then, due to elastic deformation, the upper surface blocking projection 70 digs into the lower surface from the end surface on the lower side of the upper inner protrusion 5. Then, the outer protrusion 7 spirally rises in a state where the upper surface blocking protrusion 70 is compressed.

Further, the lower surface blocking projection 71 has a lower inner projection 5
Abutting the end face 56 on the lower side of the
The reaction force from the upper end 51 of the upper inner projecting ridge 5 that has been compressed disappears, and the upper surface blocking projection 70 restores its shape and contacts the upper end surface 55 of the upper inner projecting ridge 5. . As a result, the outer ridge 7 is prevented from rotating and is restrained in the vertical direction, and the motor fixing member 6 is engaged with the lower case 4 (see FIG. 3). Further, the lower surface of the outer protruding ridge 7 is pressed against the upper surface of the lower inner protruding ridge 5, and the ribs 54 of the lower inner protruding ridge 5 are elastically or plastically deformed, so that the lower surface of the outer protruding ridge 7 and the lower inner protruding ridge 7 are protruded. Seal the gap between the top surface of Article 5.

2) Removal of the motor fixing member 6 from the lower case 4 When the engaged motor fixing member 6 is rotated in the same direction as when the motor fixing member 6 is inserted from above, the upper surface blocking protrusion 70 causes the upper inner protrusion 5 to move. The upper end portion 51 is compressed by receiving a reaction force from the upper end portion 51 thereof, and the reaction force that blocks the rotation of the outer protrusion 7 by the upper surface blocking protrusion 70 disappears. After that, the outer ridge 7 spirally descends and the outer ridge 7
Of the outer ridge 7 by separating the whole of the inner ridge 5 from the lower inner ridge 5.
The upward force exerted on the motor is eliminated, and the motor fixing member 6
Falls down.

When the engaged motor fixing member 6 is rotated in the same direction as when it is inserted from below, the lower surface blocking protrusion 71 causes a reaction force from the lower end portion 52 of the lower inner protrusion 5. The external projection 7 is compressed by receiving the external projection 7 by the lower surface blocking projection 71.
There is no reaction force to prevent the rotation of. After that, the outer ridge 7 spirals up, and the entire outer ridge 7 is separated from the upper inner ridge 5, so that the downward force exerted on the outer ridge 7 disappears and the motor fixing member 6 can be pulled upward. Become.

[Effects of the Embodiment] In the vehicle air conditioner 1 of the present embodiment, the motor fixing member 6 in the blower unit 2 is arranged above the lower case 4 and above the inside / outside air switching box 20 and the bell mouth plate 32. It can be assembled by simply turning it in, and the man-hours involved in assembly are small. In addition, the vehicle air conditioner 1 of this embodiment can be attached and detached very easily by simply turning the motor fixing member 6 slightly from the lower side of the vehicle when the air blower 2 is maintained. In addition, the multi-blade blower 3 of the vehicle air conditioner 1 of the present embodiment includes the motor fixing member 6
When assembling with the lower case 4, the man-hours for preventing the air leakage between the motor fixing member 6 and the lower case 4 due to the ribs 54 provided in advance on the inner protrusions 5 are unnecessary. Further, the height and plate thickness of the ribs 54 can absorb variations in the positions of the inner protrusions 5 and the outer protrusions 7.

[Modification] Instead of providing the upper surface blocking projection 70 and the lower surface blocking projection 71, as shown in FIG. 5C, a convex portion 72 is provided on the upper surface or the lower surface of the outer protruding strip 7, and the convex portion 72 is provided. The recess 57 recessed in the same shape as the above may be provided on the lower surface or the upper surface of the inner protrusion 5 with which the projection 72 abuts (first modified example). On the contrary, as shown in FIG. 5D, the outer protrusion 7 may be provided with the recess 73 and the inner protrusion 5 may be provided with the protrusion 58 (second modification). The inner ridge and the outer ridge may have a single spiral shape, and may be fitted like a female screw and a male screw. The inner ridge and the outer ridge may be horizontal, and the inner ridge may alternately occupy the upper and lower positions, and the outer ridge may be sandwiched between the upper and lower inner ridges.

A protrusion may be provided on the inner ridge, and the inner ridge may be sandwiched between adjacent outer ridges to be engaged by the protrusion. Instead of the inner protrusion, a groove may be provided on the inner circumference of the circular opening.

[Application Example] The attachment / detachment mechanism of the motor fixing member 6 and the lower case 4 in this embodiment can be applied to parts such as a blower resistor, a power transistor, and a BPC.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a multi-blade blower.

FIG. 2 is a cross-sectional view of a vehicle air conditioner.

FIG. 3 is a cross-sectional view taken along the inner circumference showing a state where the outer and inner ridges are connected to each other.

FIG. 4A is a perspective view showing a rib of an inner protrusion.
(B) is an AA sectional view of (a).

FIG. 5 (c) is a diagram according to a first modified example of the protrusion. (D) is a figure concerning the 2nd modification about a projection.

FIG. 6 is an exploded perspective view of a conventional multi-blade blower for a vehicle air conditioner.

FIG. 7 is a cross-sectional view of a conventional multi-blade blower for a vehicle air conditioner.

[Explanation of symbols]

 1 Air Conditioner for Vehicle 3 Multiblade Blower (Blower) 5 Inner Ridge 6 Motor Fixing Member 7 Outer Ridge 10 Air Conditioning Duct 11 Evaporator (Temperature Adjusting Means) 12 Condenser (Temperature Adjusting Means) 20 Inner / Outer Air Switching Box 30 Scroll Casing 31 Centrifugal Fan (Fan) 40 Lower Plate (Bottom Plate) 41 Opening (Circular Opening) 54 Rib 55 Upper End Face (End Face) 56 Lower End Face (End Face) 57 Recess (Engaging Means) 58 Convex Part (Engagement) Means) 60 Motor 63 Coupling part (screw plug) 70 Upper surface blocking projection (engaging means) 71 Lower surface blocking projection (engaging means) 72 Convex part (engaging means) 73 Recessed part (engaging means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Teruhiko Kameoka 1-1-1, Showa-cho, Kariya city, Aichi Nihon Denso Co., Ltd.

Claims (6)

[Claims] 1. An air conditioning duct for supplying conditioned air to a vehicle compartment, a scroll casing, a fan arranged in the scroll casing, and a motor for driving the fan, and the upstream portion of the air conditioning duct. A blower mounted to generate a flow of air flowing out into the vehicle compartment, an inside / outside air switching box connected to an intake port of the blower to selectively introduce air inside and outside the vehicle compartment, and inside the air conditioning duct. In a vehicle air conditioner provided with temperature adjusting means for adjusting the temperature of the air flowing in the air conditioning duct, the blower comprises a circular opening having a diameter slightly larger than that of the fan on the bottom plate of the scroll casing. And an inner screw formed of an elastically deforming spiral inner protrusion is provided on the inner circumference of the circular opening, and the circular opening is fitted into the circular opening. A motor fixing member that holds the motor is formed while forming a screw plug to be fitted, and the screw plug has an outer protrusion that elastically deforms, and the outer protrusion or the inner protrusion has a predetermined screw. An air conditioner for a vehicle, comprising: engaging means for engaging an outer ridge and an inner ridge at a mating position. 2. The vehicle air conditioner according to claim 1, wherein the engaging means is provided on the outer ridge and is in contact with an upper end face and a lower end face of the inner ridge, respectively. An air conditioner for a vehicle, which is a protrusion that engages the outer ridge with the inner ridge. 3. The vehicle air conditioner according to claim 1, wherein the engaging means is provided on the outer ridge side unevenness provided on the outer ridge, and the outer ridge is provided on the inner ridge. An air conditioner for a vehicle, comprising: inner protrusions and recesses that engage with the inner protrusions by engaging side protrusions and recesses. 4. The vehicle air conditioner according to claim 1, wherein a plurality of the inner protrusions inclined with respect to the inner circumference of the circular opening are provided in a row, and the engagement means A projection that is provided on the outer ridge and that abuts the upper and lower end surfaces of the adjacent inner ridges that sandwich the outer ridge and that engages the outer ridge with the inner ridge. A vehicle air conditioner. 5. The vehicle air conditioner according to claim 1, wherein a plurality of the inner protrusions inclined with respect to the inner circumference of the circular opening are arranged in a row, and the engagement means The inner protrusion-shaped irregularities provided on the inner protrusions and the inner protrusion-side irregularities of the adjacent inner protrusions that are provided on the outer protrusions and sandwich the outer protrusion, and the outer protrusions are fitted to each other. An air conditioner for a vehicle, which comprises a protrusion and a protrusion on an outer protrusion side that engages with the inner protrusion. 6. The vehicle air conditioner according to any one of claims 1 to 5, wherein the inner protrusion of the blower is in close contact with the outer protrusion on a peripheral edge of the upper surface of the circular opening excluding a root of the inner periphery. An air conditioner for a vehicle, which is provided with ribs.