JP4538986B2 - Unit connection structure of air conditioner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a unit coupling structure of an air conditioner suitable for use in, for example, a vehicle air conditioner composed of a plurality of units.
[0002]
[Prior art]
In an air conditioner comprising a temperature adjustment unit that introduces inside air or outside air, blows introduction air by a blower, and cools and heats the blown air, and blows out the conditioned air into the vehicle interior, A plurality of pins and holes provided in both units are fitted and positioned, and then mechanically coupled with a plurality of screws.
[0003]
[Problems to be solved by the invention]
However, since the inside / outside air unit is usually installed in the instrument panel on the passenger side of the vehicle, the inside / outside air unit is installed to secure a space for the passenger's feet with respect to the temperature adjustment unit installed in the instrument panel on the center side of the vehicle. The shape has a space on the side. And the position of the screw that fastens both units is restricted to the part where the tightening tool does not interfere with either unit, and after joining both units, the inside / outside air unit is in a state where there is no support of the lower part. A downward moment is applied around the screw fastening part. As a result, the case of the inside / outside air unit is deformed so that the upper side of the coupling surface where the screw cannot be set is opened, for example, the blowing air leaks from the gap of the coupling portion, or the pitch of the mounting stay to the vehicle formed by both units Problems such as reduced dimensional accuracy occur.
[0004]
In view of the above problems, an object of the present invention is to provide a unit coupling structure of an air conditioner that adds a retaining function to the positioning mechanism of both units and can suppress deformation of the case after the coupling of both units.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention employs the following technical means.
[0006]
In the invention according to claim 1, the inside / outside air unit (200) for introducing the inside air or the outside air and blowing the introduction air;
A temperature adjustment unit (300) that is provided adjacent to the inside / outside air unit (200) in the horizontal direction, cools and heats the air blown from the inside / outside air unit (200), and blows it out into the passenger compartment as conditioned air;
A plurality of positioning pins (360) provided on at least one of both units (200, 300);
A plurality of positioning pins (360) and a plurality of positioning holes (281) provided in both units (200, 300) on the opposite side;
After the positioning pin (360) and the positioning hole (281) are fitted between the two units (200, 300), the two units (200, 300) are joined by the fastening member (400). In unit connection structure,
The positioning pin (360) and the positioning hole (281) are fitted in the horizontal direction,
At least one positioning pin (360) has an engaging portion (361) that is locked in a direction opposite to the positioning hole (281).
The engaging portion (361) is a hook portion (361) provided at the tip end portion of the positioning pin (360) and protruding upward in the vertical direction.
The positioning hole (281) is formed so as to penetrate the plate-like portion (280),
The hook part (361) and the flat part (283) of the plate-like part (280) are adapted to be engaged in the vertical direction,
The upper end of the positioning pin (360) is characterized by being arranged so as to coincide with the upper end of the unit (300) provided with the positioning pin (360) of both units (200, 300) .
[0008]
As a result, the positioning pin (360) can be prevented from coming off in the counter-fitting direction after being fitted into the positioning hole (281). The deformation of the case that opens can be suppressed.
Further, when the both units (200, 300) are assembled, after the positioning pin (360) and the positioning hole (281) are fitted in the horizontal direction, the hook portion (by the weight of either unit (200, 300) is caused by 361) can be engaged with the flat surface portion (283), so that the assembling work can be facilitated.
In addition, after the positioning pin (360) is fitted and engaged with the positioning hole (281), the inside / outside air unit (200) and the temperature adjustment unit (300) can be temporarily fixed, and the fastening member ( 400), it is not necessary to support both units (200, 300), and the fastening operation can be easily performed.
[0019]
In addition, the code | symbol in the bracket | parenthesis of each said means shows a corresponding relationship with the specific means of embodiment description mentioned later.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
A first embodiment of the present invention is shown in FIGS. 1 to 3, and the specific configuration will be described below. FIG. 1 and FIG. 2 show the overall configuration of the present invention applied to an automotive air conditioner.
[0021]
The air conditioner 100 includes an inside / outside air unit 200 and a temperature adjustment unit 300, and is disposed on the front side of the instrument panel in front of the vehicle interior.
[0022]
The inside / outside air unit 200 includes a case 210 made of polypropylene and having a thin wall, and is provided with an inside / outside air switching door 220 and a blower 230. The inside / outside air switching door 220 is interlocked by air conditioning mode switching means in a vehicle interior (not shown). Then, the outside air or the inside air is selectively introduced into the blower 230 by opening and closing the outside air inlet 240 or the inside air inlet 250. The motor 231 of the blower 230 is voltage-controlled by a not-shown electronic control unit via a blower controller to drive the fan 232, and the introduced air flows through the case 210 a formed in a scroll shape by the fan 232, and the blower duct 260. Is blown out to the temperature adjustment unit 300 described later.
[0023]
The case 210 forms a mounting portion with the vehicle side, forms a mounting portion with the vehicle mounting stay 211 and the temperature adjustment unit 300 having a long hole at the tip, and a temperature control unit mounting stay with a round hole at the tip. 212 and 213 are integrally formed.
Further, a mounting stay 280 that forms a positioning and fixing portion with the temperature adjustment unit 300 and a stay 290 that has a positioning pin 290a at the tip are integrally formed so as to form a diagonal with the temperature control unit mounting stays 212 and 213. The mounting stay 280 is provided on the upper side of the case 210 (inside / outside air unit 200) in the vertical direction. Details of the mounting stay 280 will be described later.
[0024]
The temperature adjustment unit 300 is provided with an evaporator 320 that cools the blown air and a heater 330 that heats the blown air in a temperature control case 310 that is made of polypropylene and thin. The air blown into the temperature adjustment case 310 from the suction part 380 provided so as to communicate with the blowing part 270 of the case 210 passes through the evaporator 320 and is cooled by the latent heat of vaporization of the refrigerant flowing inside. Then, when the air mix door is opened and closed by an air conditioning mode switching means in the vehicle interior (not shown), an air flow path in which air is heated by heat exchange with hot water passing through the heater 330 and flowing through the interior, and the heater 330 The air flow path to be bypassed is selected, and the air temperature is adjusted according to the ratio of the heated air and the cooling air passing through both air flow paths.
[0025]
Further, when a plurality of blow mode doors (not shown) are opened and closed, a face blow port 351, a defroster blow port 352 provided on the upper surface 315 of the temperature control case 310, and a foot blow port (not shown) provided on the left and right side surfaces 316 and 317 are provided. Air conditioned air blows out from.
[0026]
The temperature control case 310 is provided with vehicle mounting stays 311 and 312 that form a mounting portion with the vehicle side and have a reference hole and a long hole at the tip, respectively, and the temperature control unit mounting stays 212 and 213 of the case 210. The bosses 313 and 314 each having an inner diameter hole corresponding to the outer diameter of the screw of the tapping screw 400 constituting the fastening member are provided at positions facing each other, and these are integrally formed. Further, a positioning fixing pin 360 and a positioning boss 370 having a positioning hole 370a are formed integrally at positions facing the mounting stay 280 and the positioning pin 290a, respectively. Similar to the stay 280, the temperature adjustment case 310 (temperature adjustment unit 300) is provided on the upper side. The details of the positioning and fixing pins 360 will be described later.
[0027]
In the inside / outside air unit 200 and the temperature adjustment unit 300, the positioning fixing pin 360 is fitted to the mounting stay 280 (described later in detail), and the positioning pin 290a is fitted to the positioning hole 370a, and then the temperature control unit mounting stays 212, 213 are fitted. And the bosses 313 and 314 are fastened using a tapping screw 400, respectively, to form the air conditioner 100.
[0028]
And the air conditioning apparatus 100 is assembled | attached to a vehicle by using the vehicle attachment stay 211,311,312 provided in both units 200 and 300, and fastening mechanically with a volt | bolt etc. FIG.
[0029]
Hereafter, the structure of the mounting stay 280 and the positioning fixing pin 360 which are the principal part of this invention is demonstrated in detail using Fig.3 (a).
[0030]
The mounting stay (hereinafter referred to as stay) 280 forms a plate-like portion having a plate thickness t, and is provided so that a long hole 281 forming a positioning hole is penetrated inside. The long hole 281 is a conventional positioning hole provided with a fixing function. The long hole 281 has a longitudinal length such that the major axis is D and the minor axis is E according to the outermost dimension of a positioning fixing pin 360 described later. It is a hole. A plate thickness portion 282 is formed on the outside of the long hole 281 by the plate thickness t.
[0031]
On the other hand, a positioning and fixing pin (hereinafter referred to as pin) 360 is a conventional positioning pin having a fixing function, and protrudes in a direction intersecting with the fitting direction of the long hole 281 at the upper end of the tip. A hook portion 361 is provided as an engaging portion. A recess 362 is formed between the hook portion 361 and the root wall portion 319 of the pin 360. The dimension F of the concave portion 362 in the longitudinal direction of the pin 360 is substantially equal to the thickness dimension t of the thick portion 282 of the stay 280 so that the thick portion 282 is engaged with the concave portion 362. The pin 360 has a cross-shaped cross section to prevent sink marks due to thick wall, and the tip side is inclined to improve insertability with the long hole 281. Is provided.
[0032]
When assembling the stay 280 and the pin 360, as shown in FIG. 3B, the pin 360 is fitted into the elongated hole 281 and horizontally penetrated until it abuts against the coupling surface 110, and thereafter, FIG. ), The plate thickness portion 282 is engaged with the concave portion 362 toward the lower side X in the vertical direction by the dead weight of the inside / outside air unit 200.
[0033]
As a result, the plate thickness portion 282 and the concave portion 362 are locked with respect to the fitting direction of the long hole 281 and the pin 360 and perform the fixing function of both units 200 and 300. The deformation of the case 210 that opens can be suppressed. As a result, it is possible to suppress the leakage of blown air due to the gap between the coupling portions, or the decrease in accuracy of the pitch dimensions (dimensions A and B in FIG. 2) of the vehicle mounting stays 211 and 311 formed by the two units 200 and 300.
[0034]
Further, when the two units 200 and 300 are coupled, the plate thickness portion 282 and the concave portion 362 can be engaged by the own weight of the inside / outside air unit 200 after the long hole 281 and the pin 360 are fitted, so that the assembling work can be performed. Easy to do.
[0035]
Further, since the mounting stay 280 and the pin 360 are provided above the respective units 200 and 300, after the pin 360 is fitted and engaged with the long hole 281 of the mounting stay 280, the inside and outside air units 200 and The temperature adjustment unit 300 can be held in a temporarily fixed state, and when fastening with the tapping screw 400, the supporting operation to the both units 200 and 300 is not required, and the fastening operation can be easily performed.
[0036]
Further, incidentally, in the detachment of both units 200 and 300 in the market, the two parts 200 and 300 at the time of loosening and fastening of the tapping screw 400 also serve as temporary fixing by the engagement of the plate thickness portion 282 and the concave portion 362. Desorption workability can be improved without requiring support to 200 and 300.
[0037]
(Other embodiments)
As shown in FIG. 4, the setting position of the pin 360 and the long hole 281 is reversed between the case 210 and the temperature adjustment case 310 with respect to the first embodiment, and the pin 360 is provided on the case 210 side. Also good. In this case, the concave portion 362 of the pin 360 is formed by providing a hook portion 363 on the lower side.
[0038]
As a result, when the light inside / outside air unit 200 is assembled toward the temperature adjustment unit 300 in the inside / outside air unit 200 and the temperature adjustment unit 300, the pin 360 is provided on the case 210 side of the inside / outside unit 200. Work becomes easy.
[0039]
Moreover, the recessed part 362 can be easily engaged with the plate | board thickness part 282 toward the lower side by the dead weight of the inside / outside air unit 200, and both units 200 and 300 can be reliably latched.
[0040]
Further, as shown in FIG. 5, the pin 360 may be provided at the upper end portion of the temperature adjustment case 310 and may not have the concave portion 362 with respect to the first embodiment. In this case, the hook 361 engages with the flat portion 283 of the stay 280, and after the pin 360 and the long hole 281 are fitted, the hook 361 can be prevented from coming off in the anti-fitting direction. The deformation of 210 can be suppressed.
[0041]
Furthermore, in the first embodiment, the hook portion 361 has been described with one setting. However, if the hook portions 361 are similarly provided for the other positioning pins 290a, the retaining function can be improved. .
[0042]
Although the fitting direction is horizontal and the engaging direction is vertical, the present invention is not limited to this, and the fitting direction may be set according to the shape of the unit and the assembly direction.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an overall configuration of an air conditioner according to a first embodiment of the present invention.
2A and 2B show an overall configuration of an air conditioning apparatus according to a first embodiment of the present invention, in which FIG. 2A is a front view, and FIG. 2B is a side view.
FIGS. 3A and 3B show a main part of the present invention, FIG. 3A is a side view showing a detailed shape of a long hole and a pin, FIG. 3B is a side view showing a fitting state of the two, and FIG. It is a side view which shows a state.
FIG. 4 is a side view showing a detailed shape of a long hole and a pin according to another embodiment (Modification 1) of the present invention.
FIG. 5 is a side view showing a detailed shape of a long hole and a pin according to another embodiment (Modification 2) of the present invention.
[Explanation of symbols]
100 Air Conditioning Device 200 Inside / Outside Air Unit 210 Case 280 Mounting Stay (Plate-shaped Part)
281 long hole (positioning hole)
282 Thickness portion 283 Planar portion 300 Temperature adjustment unit 310 Temperature adjustment case 319 Root wall portion 360 Positioning fixing pin (positioning pin)
361 Hook part (engagement part)
362 Recess 400 Tapping screw (fastening member)

Claims (1)

An inside / outside air unit (200) for introducing inside air or outside air and blowing the introduction air;
A temperature adjustment unit (300) that is provided adjacent to the inside / outside air unit (200) in the horizontal direction, cools and heats the air blown from the inside / outside air unit (200), and blows it out into the passenger compartment as conditioned air. When,
A plurality of positioning pins (360) provided on at least one of the units (200, 300);
A plurality of positioning holes (281) provided in the both units (200, 300) on the side facing the plurality of positioning pins (360);
After the positioning pin (360) and the positioning hole (281) are fitted between the two units (200, 300), the two units (200, 300) are joined by a fastening member (400). In the unit connection structure of the air conditioner,
The positioning pin (360) and the positioning hole (281) are fitted in a horizontal direction,
At least one of the positioning pins (360) includes an engaging portion (361) that is locked in a direction opposite to the positioning hole (281).
The engagement portion (361) is a hook portion (361) provided at the tip of the positioning pin (360) and protruding upward in the vertical direction.
The positioning hole (281) is formed to penetrate the plate-like portion (280),
The hook part (361) and the flat part (283) of the plate-like part (280) are adapted to be engaged in the vertical direction,
The upper end of the positioning pin (360) is disposed so as to coincide with the upper end of the unit (300) provided with the positioning pin (360) among the two units (200, 300). The unit connection structure of the air conditioner.

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