JPH081931Y2 - Automotive air conditioners - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to an air conditioner for a vehicle provided with an air distribution guide for controlling the direction of temperature-controlled air blown into a vehicle interior.

(Prior Art) A typical example of an air conditioner for a vehicle will be described below.
As shown in the figure, the automobile air conditioner includes an intake unit 1, a cooler unit 2, and a heater unit 3. A motor 4 is provided in the intake unit 1.
A fan 5 driven by the intake unit 1 and an intake door 8 built in the intake unit 1 for alternately opening and closing the inside air intake 6 and the outside air intake 7 between the A position and the B position. .

Inside the cooler unit 2 is provided an evaporator 11 into which the refrigerant flows from a refrigerant conduit 9 to which an expansion valve 10 is attached. Further, a heater core 12 in which warm water circulates is provided in the heater unit 3, and air is heated by the heater core 12 through the cooler unit 2. In the heater unit 3, a mix door 13 is provided to adjust the ratio of the amount of air passing through the heater core 12 and the amount of air not passing through the air cooled through the cooler unit 2. ing. In order to mix the warm air that has passed through the heater core 12 and the cold air that does not pass,
A mix chamber 14 is formed in the heater unit 3, and a defrost outlet 15 and a foot outlet 16 are provided in order to blow the air from the mix chamber 14 into the passenger compartment.
The vent outlet 17 is formed in the heater unit 3.

A duct (not shown) is attached to the defrost outlet 15 so that the air from the outlet 15 is blown to the inner surfaces of the front window and the side windows. Further, a duct (not shown) is attached to the vent outlet 17, so that the temperature-controlled air from the outlet 17 is blown out toward the upper body of the occupant. Furthermore, temperature-controlled air is blown from the foot outlet 16 toward the feet of the occupant directly or through a duct.

As shown in FIG. 3, the heater unit 3 includes a differential door 18 for opening and closing the defrost outlet 15, a vent door 20 for opening and closing the vent outlet 17, and a foot door 19 for opening and closing the foot outlet 16. It is installed inside.

In addition, in such a heater unit 3, the actual development 55
No. 129810, the guide passages are installed in the heater unit 3 so that the warm air that has passed through the heater core 12 and the cold air that does not pass through the mix chamber 14 are sufficiently mixed, The air distribution guide is attached so that the temperature-controlled air blown from the air-conditioning air is directed in a predetermined direction.

FIG. 4 is a diagram showing the details of the defrost outlet 15 shown in FIGS. 2 and 3, and a flange is provided outside the outlet 15.
21 is provided so as to project to the outside of the heater unit 3. Then, in order to change the direction of the temperature-controlled air blown from the defrost outlet 15 into the defrost duct (not shown), as shown in FIG. Can be stopped.

(Problems to be solved by the invention) However, conventionally, in order to attach the air distribution guide 22 to the heater unit 3, a screw 24 is used for a support member 23 provided in the heater unit 3, and this air distribution guide
Since the 22 and Franch 21 parts are separated, when the screw 24 is rotated using a screwdriver or the like (not shown) when attaching the air distribution guide 22 to the heater unit 3, the outer surface of the air distribution guide 22 and the flange portion 21 are separated. Since a predetermined clearance is provided between the inner surface and the inner surface, the air distribution guide 22 itself may rotate in the direction indicated by the arrow in FIG.
When the air distribution guide 22 rotates in this way, a gap S is generated between the air distribution guide 22 and the flange 21, and an error occurs in the air distribution state. In this state, the air distribution guide 22 may come off the heater unit 3 due to the vibration of the vehicle with the heater unit 3 mounted on the vehicle. Therefore, it is necessary to carefully perform the fastening work with the screw 24 with both hands, and the workability is not good.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to facilitate the work of attaching the air distribution guide to the heater unit.

[Structure of the Invention] (Means for Solving the Problems) The present invention for achieving the above-mentioned object forms a blowout port for blowing temperature-controlled air from the inside of the heater unit, and In an air conditioner for an automobile, in which an air distribution guide that changes the direction of air flow to an outlet is installed in the heater unit, the air conditioner is projected outside the heater unit so as to surround the outlet outside the outlet. By the main body portion located along the inner surface of the provided flange portion, the connecting portion screwed to the support portion provided in the heater unit, and the air distribution portion rising from the main body portion and the connecting portion. The air distribution guide is formed in the main body portion and abuts on the flange portion of the outlet, and a slit is provided on the flange portion to engage with the slit and the outside of the flange portion. A protrusion having a contact surface that abuts against the main body of the air distribution guide is provided at a position displaced from the center of the main body of the air distribution guide by a predetermined distance in the direction of rotation when the screw used for the screw connection is screwed in. It is an automobile air conditioner.

(Operation) Since the protrusion and the slit of the air distribution guide are engaged with each other and the connection portion of the air distribution guide is fixed to the supporting tool in the heater unit with a screw, the protrusion is not attached during the screw fixing work. And the slits are engaged with each other, and the air distribution guide can be easily and quickly attached without the operator having to manually press the air distribution guide.

Also, since the engagement position between the protrusion and the slit is a position displaced from the center of the main body of the air distribution guide by the predetermined distance in the direction of rotation when the screw is screwed in, the screw fastening work Due to this, the air distribution guide tries to rotate in the direction in which the main body on the side where the projection is provided rather than the center moves away from the flange, but the contact surface of the projection due to the engagement between the projection and the slit. Contacts the outer surface of the flange to prevent the air distribution guide from rotating, so the gap between the air distribution guide on the rotating direction and the flange when the screw is screwed in is widened as in the past. It is possible to reliably prevent this, and to minimize the gap between the air distribution guide and the flange portion as a whole. In this way, when fixing the screws, not only can the protrusions and the slits be engaged with each other, but also the gap between the air distribution guide and the flange can be minimized as a whole. It is possible to attach the air distribution guide to the heater unit with one hand without the operator having to press the air distribution guide by hand. In this way, the workability of the work of installing the air distribution guide is improved and the installation of the air distribution guide is ensured, so that it is possible to prevent an error in the air distribution state and prevent the air distribution guide from coming off.

(Embodiment) FIGS. 1 (A) and 1 (B) are cross-sectional views showing the main part of an automobile air conditioner according to an embodiment of the present invention, in which the defrost outlet port 15 in FIGS. , As in FIG. 4, is shown in FIGS. 1 (A) and (B).

The air distribution guide 22 is, as shown in FIGS. 1 (A) and (B),
The main body 30 has a U-shaped cross section, and extends along the flange 21 provided outside the heater unit 3 so as to surround the blowout port 15 outside the defrost blowout port 15.
A connecting portion 31 bent from the lower end of the main body portion, the main body portion 30, the left and right air distribution portions 32 that are integrated with the connecting portion 31 and stand up from the main body portion 30 and the connecting portion 31, It consists of 33 and. The connecting portion 31 of the air distribution guide 22 is provided with a hole through which the screw 24 penetrates, and the screw 24 is penetrated through this hole portion and the screw 24 is fixed to the support tool 23, whereby the air distribution guide 22 is attached to the heater unit 3.

In addition, a protrusion 34 is provided on the outer surface of the main body 30 of the air distribution guide
The projection 34 has a T-shaped cross section and has an abutment surface that abuts the outer surface of the flange 21. A slit 35 with which the protrusion 34 engages is formed in the flange portion 21 of the defrost outlet 15 of the heater unit 3. The protrusion 34 is engaged with the slit 35 and the screw 24 is used. The air distribution guide 22 is fixed to the flange portion 21 of the heater unit 3 by fixing the air distribution guide 22 at the connecting portion 31.

The central portion of the main body portion 30 is orthogonal to the inner surface of the flange portion 21 on the side of the air distribution guide 22 facing the main body portion 30 and passes through the connecting portion 31, as indicated by the symbol P in FIG. 1 (B). It is located at a position where the virtual surface and the main body 30 of the air distribution guide 22 intersect, and the protrusion 34 is a predetermined distance R with respect to the central portion P in the direction of rotation when the screw 24 is screwed. It is provided at a shifted position.

Therefore, in order to attach the air distribution guide 22 having such a structure to the heater unit 3, first, the protrusion 34 is formed in the slit 35.
After fixing the air distribution guide 22 to the flange portion 21 of the heater unit 3 by engaging with the
And the connecting portion 31 of the air distribution guide 22 are integrally connected. In the operation of fastening the screw 24, the air distribution guide 22 tries to rotate around the fastening position of the screw 24 in the direction indicated by the arrow in FIG. 1 (B). That is, when the screw 24 is a right-hand screw, the air distribution guide 22 tries to rotate in a direction in which the main body portion on the side where the protrusion 34 is provided with respect to the central portion P moves away from the flange portion 21, but the protrusion 34 Since the contact surface of the projection 34 is brought into contact with the outer surface of the flange portion 21 by the engagement of the slit 35 with the slit 35, the rotation of the air distribution guide 22 is suppressed, and thus the screw is screwed in as in the conventional case. The air distribution guide 22 and the flange portion 21 on the side of the rotating direction are surely prevented from expanding in the gap, and the air distribution guide 22 and the flange portion 21 are entirely covered.
It is possible to minimize the mounting gap between and. In this way, when fixing the screws, not only can the protrusions and the slits be engaged with each other, but also the gap between the air distribution guide and the flange can be minimized as a whole. The screw 24 can be fixed with one hand without the operator having to press the air distribution guide 22 by hand. If the screw 24 is a left-hand thread, the protrusion 34 is provided on the opposite side to the center portion P.

On the other hand, when the protrusion 34 is provided on the opposite side of the center P from the above, that is, the protrusion 34 is screwed to the center P by screws 24.
When it is provided at a position displaced to the side opposite to the direction in which it rotates when it is screwed in, the contact surface of the projection 34 is the flange 21
Since it moves in a direction away from the outer surface of the air distribution guide 22, the rotation of the air distribution guide 22 cannot be restrained.
The air distribution guide 22 is allowed to rotate by a predetermined gap provided between the outer surface of 22 and the inner surface of the flange portion 21. In this embodiment, such a situation can be prevented.

[Advantages of the Invention] As described above, according to the present invention, the main body portion located along the inner surface of the flange portion provided outside the heater unit so as to surround the blower outlet outside the heater unit. And a connecting portion that is screwed to a supporting portion provided in the heater unit, and an air distribution portion that rises from the main body portion and the connecting portion, and the main body portion is provided on the flange portion of the outlet. The projection part having the abutment surface that forms the abutment guide and abuts the slit on the flange part and abuts the outer surface of the flange part while engaging the slit, Since the screw used for the screw connection is provided at a position displaced by a predetermined distance on the side in which the screw used for the screw connection is screwed from the portion, the main body on the side where the protrusion is provided from the center by screw fixing work. Department The air distribution guide tries to rotate in the direction away from the flange, but the contact surface of the projection contacts the outer surface of the flange due to the engagement of the projection and the slit, and the air distribution guide rotates. This prevents the expansion of the gap between the air distribution guide on the rotating direction side and the flange part when the screw is screwed in as in the conventional case, and it is possible to prevent the air distribution guide and the flange part from expanding overall. It is possible to minimize the gap between and.

In this way, the screw fixing work can be performed not only with the protrusion and the slit engaged,
Since the gap between the air distribution guide and the flange can be minimized as a whole, it is easy for the operator to attach the air distribution guide to the heater unit with one hand without the operator having to press the air distribution guide by hand. At the same time, since the air distribution guide is surely attached to the heater unit by a quick mounting operation, the error in the air distribution state is eliminated, and it becomes possible to prevent the air distribution guide from coming off for a long period of time.

[Brief description of drawings]

FIG. 1 (A) is a perspective view showing an essential part of an automobile air conditioner according to an embodiment of the present invention, and FIG. 1 (B) is from the opposite side after mounting the part shown in FIG. 1 (A). Perspective view,
FIG. 2 is a sectional view showing an automobile air conditioner, FIG. 3 is a perspective view showing a heater unit in FIG. 2, and FIG. 4 is an enlarged sectional view showing a portion of a conventional defrost outlet. 3 ... Heater unit, 15 ... Defrost outlet, 21 ...
… Flange, 22 …… Air distribution guide, 23 …… Support, 24…
… Screw, 30 …… Main body, 31 …… Coupling, 32,33 …… Air distribution section, 34 …… Projection, 35 …… Slit.

Claims (1)

[Scope of utility model registration request] 1. A blowout port (15) for blowing temperature-controlled air from the inside of the heater unit is formed in the heater unit (3),
An air conditioner for a vehicle, in which an air distribution guide (22) for changing the direction of air flow to the outlet (15) is mounted in the heater unit (3), wherein the outlet (15)
A flange portion (2) provided outside the heater unit (3) so as to surround the air outlet (15).
1) a main body portion (30) located along the inner surface, a connecting portion (31) screwed to a support portion (23) provided in the heater unit (3), and the main body portion (30) And the air distribution part (32, 33) standing up from the connection part (31) and contacting the flange part (21) of the blowout port (15) with the main body part (30) ( 22) forming
The flange portion (21) is provided with a slit (35), and a projection portion (34) having an abutting surface that engages with the slit and abuts an outer surface of the flange portion (21) is provided with the air distribution guide (22). For a vehicle provided at a position displaced by a predetermined distance (R) from the center (P) of the main body (30) of the main body (30) to the direction of rotation when the screw (24) used for the screw connection is screwed in. Air conditioner.