JP2013014269A - Case fitting structure of air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the case fitting structure of an air conditioner for a vehicle, which is capable of suppressing water leakage from the fitting part of divided cases even with a simple sealing structure and facilitating dimensional correction in the fitting part.SOLUTION: The counter face 101a of a projection 101 opposing to the lower face 102c of a top end 102b, and the hole inner face 202a of a hole 202 to be combined with the counter face 101a are formed into inclined faces 101a, 202a inclined at the same angle as the inclination angle of the top end 102b. In the two pairs of combined faces along a predetermined direction in the projection 101 and the hole 202, a clearance 110a is formed between one of the two pairs of combined faces; and a fitting part rib 202c protruding from the face 202a on one side of the pair of combined faces to the other face is formed, and the top end of the fitting part rib 202c is brought into contact with the face 101a of the other side.

Description

  The present invention relates to a case fitting structure for a vehicle air conditioner mounted on a vehicle.

  As a conventional vehicle air conditioner, for example, the one shown in Patent Document 1 is known. That is, in the vehicle air conditioner of Patent Document 1, a drain port is provided at the bottom of the air conditioning case that houses the evaporator, and water in the air conditioning case such as condensed water generated by the evaporator is discharged from the drain port. It is designed to be discharged outside the passenger compartment.

  Moreover, in the vehicle air conditioner of Patent Document 1, a drain port is installed in the inside / outside air switching box, and the drain port of the inside / outside air switching box and the drain outlet at the bottom of the air conditioning case are connected by a hose. As a result, even if water droplets enter the inside / outside air switching box, the water droplets that have entered can be discharged out of the cabin through the drain port and hose through the drain port of the air conditioning case. The intrusion can be prevented.

Japanese Patent Laid-Open No. 2004-249907

  By the way, in the case where the air-conditioning case is formed by fitting the ends of the divided case, when water enters the air-conditioning case from the outside, the water is supplied from the fitting part of the divided case. It includes the problem of leakage and dripping of the water into the passenger compartment.

  In such an air conditioning case, in the air conditioning case, by providing a rib that preferentially guides water that has entered the upper side of the fitting portion to the discharge port side, water can reach the fitting portion directly. It can be suppressed, and it is considered that water leakage from the fitting portion can be eliminated without providing a sealing structure in which, for example, a seal member is interposed in the fitting portion. As a fitting part, the structure which inserts a simple convex part in a recessed part can be considered, for example.

  However, in the finished dimensions of the protrusions and recesses of the fitting part, deviation from the target value is likely to occur depending on the shape of the protrusions and recesses, and if there is a gap between the protrusions and the recesses, Leakage, backlash of the air-conditioning case, and poor assembly of the air-conditioning case. In such a case, if the air-conditioning case is made of resin, the molding die is corrected, and mainly the thickness dimension of the convex part over the entire surface where the convex part and the concave part contact each other, Alternatively, it is necessary to correct the width dimension of the recess.

  In view of the above problems, the present invention is a vehicle air conditioner case that can suppress water leakage from the fitting portion of the split case and can easily adjust the size of the fitting portion even with a simple seal structure. An object is to provide a fitting structure.

  In order to achieve the above object, the present invention employs the following technical means.

In the first aspect of the present invention, the case (110) that forms the air passage through which the blast air into the vehicle compartment passes is formed of at least the first case member (10) and the second case member (20) that are divided. ,
A case fitting structure for a vehicle air conditioner in which a first case member (10) and a second case member (20) are fitted in a predetermined direction,
The second case member (20) is provided with a drainage part (201) for discharging the water accumulated in the case (110) to the outside of the passenger compartment.
Inside the case (110), there is a second upper portion of the first case member (10) on the upper side in the vertical direction of the fitting portion (3) between the first case member (10) and the second case member (20). Ribs (102) extending toward the case member (20) side are provided,
The end portion (102b) of the rib (102) on the second case member (20) side is closer to the second case member (20) than the end portion (203) of the drainage portion (201) on the first case member (10) side. Is inclined to the lower side with respect to the horizontal direction,
The fitting part (3) is formed on the first case member (10), and a projection part (101) protruding from the first case member (10) to the second case member (20) in a predetermined direction. A hole (202) formed in the second case member (20) into which the protrusion (101) is inserted,
The opposed surface (101a) of the projection (101) facing the lower surface (102c) of the tip (102b), and the inner surface (202a) of the hole (202) combined with the opposed surface (101a) are: It is formed as an inclined surface (101a, 202a) inclined at an angle equivalent to the inclination angle of the tip (102b),
In the protrusion (101) and the hole (202), a gap (110a) is formed between any one of the two combinations of surfaces along a predetermined direction. A fitting portion rib (202c) protruding from the one side surface (202a) of the set combination surface to the other side surface is formed, and the tip of the fitting portion rib (202c) is the other side surface (202a). It is characterized by being in contact with.

  Thus, while making the front-end | tip part (102b) of a rib (102) protrude in the 2nd case member (20) side rather than the edge part by the side of the 1st case member (10) of a drainage part (201), a downward side The water that has entered the case (110) from the outside flows on the lower surface in the vertical direction of the first case member (10) from the front end (102b) of the rib (102). To the outside of the case (110). For this reason, since it can prevent that water reaches | attains a fitting part (3), even if it does not provide a complicated seal structure in a fitting part (3), the water leak from a fitting part (3) can be suppressed.

  Further, the opposed surface (101a) of the projecting portion (101) and the inner surface (202a) of the hole portion (202) combined with the opposed surface (101a) are inclined at the same angle as the inclined angle of the distal end portion (102b). Since it is formed as an inclined surface (101a, 202a) inclined at an angle, in the mold for forming the first case member (10), it is matched with the inclination of the tip (102b) and the protrusion (101). Since the punching direction can be formed and the undercut portion can be eliminated, the first case member (10) can be easily formed.

  Here, in the case where the inclined surfaces (101a, 202a) are formed on the protrusions (101) and the holes (202), the finished dimensions of the protrusions (101) and the holes (202) are shifted from the target values. If there is, a gap is generated between the protrusion (101) and the hole (202), and air-conditioning air leakage, assembly looseness, and assembly failure may occur. In such a case, the mold for forming the case (110) is corrected, and the protrusion is mainly formed over the entire surface where the protrusion (101) and the hole (202) should contact each other. It is necessary to correct the thickness dimension of (101) or the width dimension of the hole (202).

  However, in the present invention, in the protrusion (101) and the hole (202), a gap (110a) is formed in advance between any one of the two combination surfaces along a predetermined direction. To be. Furthermore, a fitting portion rib (202c) is formed so as to project from one surface (202a) to the other surface (101a) of one set of combination surfaces, and the tip of the fitting portion rib (202c) is the other end. It is made to contact | abut to the surface (101a) of the side. That is, the front end portion of the fitting portion rib (202c) is brought into contact with the other surface (101a), so that air-conditioning air leaks between the protrusion portion (101) and the hole portion (202). Furthermore, it is possible to prevent assembly failure and the like.

  As a result, even if a fitting failure occurs between the projection (101) and the hole (202) during the initial molding, only the portion of the fitting portion rib (202c) in the die is corrected for dimensional adjustment. By performing the above, the tip of the fitting portion rib (202c) can be brought into contact with the other surface (101a), and the projection (101) and the hole (202) should originally be in contact with each other. In comparison with the case where the mold is corrected, the mold can be easily corrected.

  The invention according to claim 2 is characterized in that the fitting portion rib (202c) is formed on the inclined surfaces (101a, 202a).

  If there are deviations from the target values in the finished dimensions of the protrusions (101) and the holes (202), the inclined surfaces (101a, 202a) of the two sets of combined surfaces are formed in consideration of variations in the inclination angle. A gap is easily formed between the combined surfaces. Therefore, according to the present invention, the fitting portion rib (202c) is formed on the inclined surfaces (101a, 202a), and the tip end portion of the fitting portion rib (202c) is brought into contact with the other surface (101a). By doing so, it is possible to reliably prevent air-conditioning air leakage between the protrusions (101) and the holes (202), looseness of assembly, and poor assembly.

  The invention according to claim 3 is characterized in that a plurality of fitting portion ribs (202c) are provided.

  According to the present invention, since the number of contact points between the protrusion (101) and the hole (202) can be increased, air-conditioning air leakage between the protrusion (101) and the hole (202) can be reduced. It is possible to improve the effect of preventing backlash and assembly failure.

  In the invention according to claim 4, in the projection part (101) and the hole part (202), one set of combination surfaces among the two sets of combination surfaces along a predetermined direction is an inclined surface (101a, 202a). At this time, the other combination surface is formed as a plane along a predetermined direction.

  According to the present invention, when one set of combination surfaces among the two sets of combination surfaces along a predetermined direction is the inclined surfaces (101a, 202a) in the protrusion (101) and the hole (202), Since one set of combined surfaces is a surface that is not affected by undercuts in the mold, it can be formed into a simple shape by forming it as a plane along a predetermined direction, and the mold can be easily manufactured. .

  The invention according to claim 5 is characterized in that a plurality of sets of the projecting portion (101) and the hole portion (202) are formed.

  According to the present invention, since the number of parts to be fitted in the fitting part (3) can be increased, leakage of air-conditioning air between the protrusion part (101) and the hole part (202), looseness of assembly, and further assembly The effect of preventing improper attachment can be improved.

  The invention according to claim 6 is characterized in that the inclination angle inclined downward of the tip end portion (102b) is 15 ° or more and 90 ° or less with respect to the horizontal direction.

  Since the vehicle air conditioner is mounted on a vehicle, water can be prevented from reaching the fitting portion (3) of the case (110) even when the vehicle is on an inclined surface inclined with respect to a horizontal plane. That is, it is necessary to ensure the waterproofness of the fitting portion (3).

  Here, one of the standards relating to the waterproof property of the vehicle air conditioner is “protection class (IP code) by the outline of the electric device for automobile” defined in JIS D 5020. As described above, in order to ensure the waterproofness of the fitting portion (3) even when the vehicle is on an inclined surface, it corresponds to “water protection class 2 (IPX2)” defined in the above standard. It is preferable to ensure waterproofness.

  On the other hand, in the present invention, the tip (102b) of the rib (102) is inclined 15 ° or more downward with respect to the horizontal direction, so that the vehicle is inclined 15 ° with respect to the horizontal plane. However, since water that has entered the case (110) from the outside is dropped from the tip (102b) of the rib (102) to the drainage (201), the water does not reach the fitting part (3). Absent. For this reason, it becomes possible to ensure waterproofness corresponding to “water protection class 2 (IPX2)” defined in the above standard. Therefore, even if the vehicle is on an inclined surface, water can be prevented from reaching the fitting portion (3), so that water from the fitting portions (3) of both case members (10, 20) can be prevented. Leakage can be suppressed.

  Further, when the rib (102) is formed integrally with the first case member (10) by making the inclination angle of the tip (102b) of the rib (102) with respect to the horizontal direction 90 ° or less, the first case It becomes possible to improve the moldability of the member (10).

  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.

It is a front view which shows the air conditioning unit of the vehicle air conditioner which concerns on 1st Embodiment. It is an expanded sectional view which shows the fitting part vicinity in the air blower unit case and air-conditioner unit case in the air-conditioning unit case of 1st Embodiment. It is the expanded sectional view which expanded further the fitting part vicinity in FIG. It is sectional drawing which shows the extraction direction of the metal mold | die at the time of shape | molding a projection part. It is an expanded sectional view showing the fitting part neighborhood in a 2nd embodiment. It is an expanded sectional view showing the fitting part neighborhood in a 3rd embodiment. It is an expanded sectional view showing the fitting part neighborhood in a 4th embodiment. It is an expanded sectional view showing the fitting part neighborhood in a 5th embodiment. It is an expanded sectional view showing the fitting part neighborhood in a 6th embodiment.

  A plurality of modes for carrying out the present invention will be described below with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each mode, the other modes described above can be applied to the other parts of the configuration. Not only combinations of parts that clearly indicate that the combination is possible in each embodiment, but also a combination of the embodiments even if they are not clearly specified unless there is a problem with the combination. It is also possible.

(First embodiment)
The fitting structure of the vehicle air conditioning case in the air conditioning unit 100 of the first embodiment will be described with reference to FIGS. The case fitting structure of the vehicle air conditioner is applied to the fitting portion 3 between the air blowing unit case 10 and the air conditioner unit case 20 in the air conditioning unit case 110. FIG. 1 is a front view showing an air conditioning unit 100 of a vehicle air conditioner, FIG. 2 is an enlarged cross-sectional view showing the vicinity of a fitting portion 3 between a blower unit case 10 and an air conditioner unit case 20 in an air conditioning unit case 110, and FIG. 2 is an enlarged cross-sectional view in which the vicinity of the fitting part 3 in FIG.

  As shown in FIG. 1, the air conditioning unit 100 includes a blower unit 1 and an air conditioner unit 2. The air-conditioning unit case 110 of the air-conditioning unit 100 includes a blower unit case 10 as a first case member formed in advance and an air-conditioner unit case 20 as a second case member in the horizontal direction in the fitting portion 3. By fitting in (in the left-right direction in FIGS. 1 to 3), an air passage through which blown air into the vehicle compartment passes is formed. The horizontal direction to be fitted corresponds to the predetermined direction of the present invention. The blower unit case 10 and the air conditioner unit case 20 are each formed of a resin material (for example, polypropylene) having a certain degree of elasticity and excellent in strength. The blower unit case 10 and the air conditioner unit case 20 are formed by a mold.

  In the present embodiment, the air conditioning unit 100 (the blower unit 1 and the air conditioner unit 2) is mounted in a dash panel (not shown) of the vehicle so that, for example, the left-right direction in FIG. 1 matches the left-right direction of the vehicle. ing.

  The blower unit case 10 is formed with an outside air introduction port 11 for introducing air outside the vehicle compartment (outside air) and an inside air introduction port 12 for circulating the air inside the vehicle compartment (inside air). In the blower unit case 10, an inside / outside air switching door (not shown) that changes the air volume ratio between the inside air volume and the outside air volume is arranged. The inside / outside air switching door is driven by an electric actuator (not shown) for the inside / outside air switching door, and the operation of this electric actuator is controlled by a control signal output from an air conditioning control device (not shown). It is like that.

  On the downstream side of the air flow of the inside / outside air switching door in the blower unit case 10, a blower 13 that blows air sucked through at least one of the outside air introduction port 11 and the inside air introduction port 12 toward the vehicle interior is arranged. . This blower is an electric blower that drives a centrifugal multiblade fan (not shown) by an electric motor 14, and the number of rotations (the amount of blown air) is controlled by a control signal output from an air conditioning control device. ing.

  An air inlet 21 into which air blown from the blower unit 1 flows is formed in the lower part of the side surface of the air conditioner unit case 20. An evaporator 22 is disposed on the air flow downstream side of the air inlet 21 in the air conditioner unit case 20. The evaporator 22 is a cooling heat exchanger that cools the blown air by exchanging heat between the refrigerant flowing through the evaporator 22 and the blown air. The evaporator 22 constitutes a refrigeration cycle together with a compressor, a condenser, a gas-liquid separator, an expansion valve and the like (not shown).

  A heater core 23 for heating the air that has passed through the evaporator 22 is arranged in parallel with a bypass passage (not shown) in the air conditioner unit case 20 above the evaporator 22 and downstream of the air flow. It is arranged to form. In the air conditioner unit case 20, a mixing space (not shown) for mixing the air that flows out of the heater core 23 and the bypass passage is formed.

  An air mix door (not shown) for adjusting the air volume ratio of the air passing through the heater core 23 and the bypass passage is provided on the side of the heater core 23 in the air conditioner unit case 20. The air mix door is driven by an electric actuator (not shown) for the air mix door, and the operation of the electric actuator is controlled by a control signal output from the air conditioning control device.

  A defroster opening, a face opening, and a foot (not shown) are provided at the uppermost part of the air conditioner unit case 20 and the most downstream part of the air flow in order to blow out the blown air whose temperature is adjusted from the mixing space to the vehicle interior that is the air conditioning target space. An opening is provided.

  A defroster duct (not shown) is connected to the defroster opening, and conditioned air is blown out from the defroster outlet at the tip of the defroster duct toward the inner surface of the vehicle front window glass. A face duct (not shown) is connected to the face opening, and air-conditioned air is blown out from the face outlet at the tip of the face duct toward the upper body of the passenger in the passenger compartment. Also, a foot duct (not shown) is connected to the foot opening, and air-conditioned air is blown out from the foot outlet at the tip of the foot duct toward the feet of the occupant.

  The air conditioner unit case 20 is provided with an air outlet mode door (not shown) that switches the air outlet mode, that is, switches the defroster opening, the face opening, and the foot opening. The air outlet mode door is driven by an electric actuator (not shown) for the air mix door, and the operation of the electric actuator is controlled by a control signal output from the air conditioning control device.

  Next, the detail of the fitting part 3 of the air-conditioning unit case 110 is demonstrated. As shown in FIG. 2, a protrusion 101 protruding in the horizontal direction (predetermined direction) with respect to the air conditioner unit case 20 is provided on the lower side of the blower unit case 10 and adjacent to the air conditioner unit case 20. It has been. In the present embodiment, the protrusion 101 is formed integrally with the blower unit case 10. The protrusion 101 is continuously formed over a predetermined area in a direction perpendicular to the paper surface of FIG.

  On the lower side in the vertical direction of the air conditioner unit case 20, a drainage unit 201 is provided for draining water that has entered the air conditioning unit case 110 from the outside to the outside of the passenger compartment. In the present embodiment, the drainage part 201 is formed in a groove shape in order to guide water that has entered the air conditioning unit case 110 from the outside to the outside of the air conditioning unit 100.

  In the air conditioner unit case 20, a hole 202 that fits with the protrusion 101 is provided at a position that is vertically above the drainage 201 and that corresponds to the protrusion 101. The hole 202 has a groove shape in cross section, and is formed as a recess into which the protrusion 101 is inserted. In the present embodiment, the hole 202 is formed integrally with the air conditioner unit case 20. The hole 202 is continuously formed over a predetermined region so as to correspond to the protrusion 101 in a direction perpendicular to the paper surface of FIG.

  The protrusion 101 is inserted into the hole 202 and fitted to form the fitting portion 3. In the blower unit case 10, a plate-like rib 102 that protrudes toward the air conditioner unit case 20 is provided on the upper side in the vertical direction of the fitting portion 3. The rib 102 is formed integrally with the blower unit case 10.

  The rib 102 has one end connected to the blower unit case 10 and the other end connected to the rib main body 102a extending in a substantially horizontal direction, and connected to the rib main body 102a and inclined downward in the vertical direction with respect to the horizontal direction. And a rib tip portion 102b. The rib main body portion 102a and the rib tip portion 102b are integrally formed.

  The inclination angle θ of the rib tip portion 102b with respect to the horizontal direction is set within a range of 15 ° or more and 90 ° or less. Moreover, the edge part which becomes the air-conditioner unit case 20 side of the rib 102, ie, the rib front-end | tip part 102b, protrudes in the air-conditioner unit case 20 side rather than the edge part 203 by the side of the fan unit case 10 of the drainage part 201.

  Here, in the projection 101, when the surface facing the lower surface 102c of the rib tip 102b (the surface on the upper side of the projection 101) is the facing surface 101a, the facing surface 101a has an inclination angle θ of the rib tip 102b. The inclined surface has the same inclination angle θ as On the other hand, the lower surface of the protrusion 101 is a fitting surface 101b extending along the horizontal direction. Further, a chamfered portion is formed at the end of the protrusion 101 on the fitting surface 101b side.

  Further, in the hole 202, when the surface that is combined with the facing surface 101a when the protruding portion 101 is inserted is the hole inner surface 202a, the hole inner surface 202a is inclined at the same inclination angle θ as the facing surface 101a. The inclined surface has an angle θ. On the other hand, the lower surface of the hole 202 is a fitting surface 202b extending along the horizontal direction. Further, the deep part of the hole 202 has a shape that is built up along the chamfered portion at the tip of the protrusion 101.

  The facing surface 101a and the hole inner surface 202a are a pair of combined surfaces when the protrusion 101 and the hole 202 are fitted, and the fitting surface 101b and the fitting surface 202b are When the projection 101 and the hole 202 are fitted, another set of combination surfaces is obtained.

  A gap 110a is formed between the facing surface 101a and the hole inner surface 202a when the protrusion 101 and the hole 202 are fitted. A fitting portion rib 202c that protrudes toward the facing surface 101a is formed at the tip end position on the opening portion side of the hole portion 202 on the hole inner surface 202a. The fitting portion rib 202c is continuously formed over a predetermined region so as to correspond to the protruding portion 101 and the hole portion 202 in a direction perpendicular to the paper surface of FIG. In addition, the fitting part rib 202c is good also as what is intermittently formed between predetermined areas with respect to the paper surface of FIG.

  The fitting portion rib 202c is formed so as to form a triangle in the cross-sectional views shown in FIGS. Of the three sides of the triangle, one side is a side that is common to the hole inner surface 202a, and the other side is a side that is extended from the vertical surface on the opening side of the hole 202. One side is a side extending in the horizontal direction from the tip of the side extended from the vertical surface to the back side of the hole 202. The shape of the fitting portion rib 202c is a shape that does not cause an undercut when the hole portion 202 is formed by a mold. And the front-end | tip part which the fitting part rib 202c protruded contact | abuts to the opposing surface 101a. Here, in one set of combination surfaces when the protrusion 101 and the hole 202 are fitted, the hole inner surface 202a corresponds to the surface on one side of the present invention, and the facing surface 101a corresponds to the surface of the present invention. It corresponds to the surface on the other side.

  In forming the fitting part rib 202c on the hole part inner surface 202a of the hole part 202, in actuality, the protrusion part of the fitting part rib 202c is made smaller than the target value at the initial stage of mold production. To do. Then, the fitting portion is cut in the direction of cutting the mold while observing the contact state between the tip portion of the fitting portion rib 202c and the facing surface 101a when the protrusion portion 101 and the hole portion 202 are fitted. It is preferable to adjust the projecting dimension of the rib 202c.

  Next, the effect of the case fitting structure of the vehicle air conditioner based on the above configuration will be described with reference to FIG.

  First, in the present embodiment, the tip end portion 102b of the rib 102 is protruded to the air conditioner unit case 20 side from the end portion of the drainage unit 201 on the blower unit case 10 side, and is inclined downward. Therefore, the water that has entered the air conditioning unit case 110 from the outside flows on the lower side surface in the vertical direction of the blower unit case 10 and is dropped from the front end portion 102b of the rib 102 to the drainage portion 201 and drained outside the air conditioning unit case 110. . For this reason, since water can be prevented from reaching the fitting portion 3, water leakage from the fitting portion 3 can be suppressed without providing a complicated seal structure in the fitting portion 3.

  Further, the opposing surface 101a of the protrusion 101 and the hole inner surface 202a of the hole 202 combined with the opposing surface 101a are formed as inclined surfaces inclined at an inclination angle θ equivalent to the inclination angle θ of the tip end portion 102b. ing. Therefore, as shown in FIG. 4, in the mold for forming the blower unit case 10, it is possible to form a pulling direction that matches the inclination of the tip 102 b and the protrusion 101 (opposing surface 101 a), and undercut Therefore, the blower unit case 10 can be easily formed.

  Here, in the case where inclined surfaces (opposing surface 101a, hole inner surface 202a) are formed on the protrusion 101 and the hole 202, there is a deviation from the target value in the finished dimensions of the protrusion 101 and the hole 202. In addition, a gap is generated between the protrusion 101 and the hole 202 (particularly, a gap between the inclined surfaces 101a and 202a is likely to be generated), and air-conditioning air leakage, loose assembly, and poor assembly may occur. Resulting in. In such a case, the mold for forming the air conditioning unit case 110 is corrected, and the thickness dimension of the protrusion 101 mainly over the entire surface where the protrusion 101 and the hole 202 should originally contact each other. (The vertical dimension in FIGS. 2 and 3) or the width dimension of the hole 202 (the vertical groove dimension in FIGS. 2 and 3) needs to be corrected.

  However, in the present embodiment, in the protrusion 101 and the hole 202, a gap 110a is formed in advance between any one of the two combination surfaces along a predetermined direction (horizontal direction). I try to do it. Further, a fitting portion rib 202c is formed to protrude from one side surface (hole inner surface 202a) of one set of combination surfaces to the other side surface (opposing surface 101a). It is made to contact | abut to the surface (opposing surface 101a) of the other side. That is, the front end portion of the fitting portion rib 202c is brought into contact with the other side surface (opposing surface 101a), so that air-conditioning air leaks between the projection portion 101 and the hole portion 202, looseness of assembly, and further assembly. It is intended to prevent improper attachment.

  As a result, even if a poor fitting between the projection 101 and the hole 202 occurs during the initial molding, only the portion of the fitting rib 202c in the mold is subjected to mold correction for dimension adjustment. The tip of the joint rib 202c can be brought into contact with the other surface (opposing surface 101a), and the mold correction is performed over the entire surface where the protrusion 101 and the hole 202 should contact each other. Compared to the above, the mold can be easily corrected.

  Moreover, in this embodiment, the fitting part rib 202c is formed in the hole inner surface 202a among the inclined surfaces (101a, 202a).

  If there is a deviation from the target value in the finished dimensions of the projecting part 101 and the hole part 202, considering the variation in the inclination angle, of the two combinations, the combination surface on which the inclined surfaces (101a, 202a) are formed. Gaps are easily formed between them. Therefore, according to the present embodiment, the fitting portion rib 202c is formed on the inclined surfaces (101a, 202a), and the tip end portion of the fitting portion rib 202c is brought into contact with the other surface (opposing surface 101a). By doing so, it is possible to reliably prevent air-conditioning air leakage between the projection 101 and the hole 202, looseness of assembly, and poor assembly.

  Further, in the present embodiment, when one set of combination surfaces is an inclined surface (101a, 202a) among the two sets of combination surfaces along a predetermined direction in the protrusion 101 and the hole 202, another set of The combination surface is formed as a plane along a predetermined direction.

  As a result, the other combination surface is a surface that is not affected by the undercut in the mold, and can be formed into a simple shape by forming it as a plane along a predetermined direction. Becomes easy.

  Here, since the vehicle air conditioner is mounted on the vehicle, water can be prevented from reaching the fitting portion 3 of the air conditioning case 110 even when the vehicle is on an inclined surface inclined with respect to the horizontal plane. That is, it is necessary to ensure the waterproofness of the fitting part 3.

  One of the standards relating to the waterproofness of a vehicle air conditioner is “the degree of protection (IP code) according to the outline of an automobile electrical device” defined in JIS D 5020. As described above, in order to ensure the waterproof property of the fitting portion 3 even when the vehicle is on an inclined surface, the waterproof property corresponding to “water protection class 2 (IPX2)” defined in the above standard. Is preferably ensured.

  On the other hand, in the present embodiment, the tip 102b of the rib 102 is inclined 15 ° or more downward with respect to the horizontal direction, so even if the vehicle is inclined 15 ° with respect to the horizontal plane, Since water that has entered the air conditioning unit case 110 from the outside is dropped from the tip end portion 102b of the rib 102 into the drainage portion 201, water does not reach the fitting portion 3. For this reason, it becomes possible to ensure waterproofness corresponding to “water protection class 2 (IPX2)” defined in the above standard. Therefore, even if the vehicle is on an inclined surface, it is possible to suppress water from reaching the fitting portion 3, so that water leakage from the fitting portion 3 of both unit cases 10 and 20 can be suppressed.

  Moreover, when the rib 102 is formed integrally with the blower unit case 10 by making the inclination angle of the tip 102b of the rib 102 with respect to the horizontal direction 90 ° or less, the moldability of the blower unit case 10 can be improved. It becomes possible.

(Second Embodiment)
The fitting part 3 of 2nd Embodiment is shown in FIG. In the second embodiment, a plurality of fitting portion ribs 202c are provided with respect to the first embodiment.

  The fitting portion rib 202c is formed at an intermediate position of the hole inner surface 202a in addition to the tip position on the hole inner surface 202a on the opening side of the hole 202.

  According to the present embodiment, the number of contact portions between the projection 101 and the hole 202 can be increased by the two fitting portion ribs 202c. It is possible to improve the effect of preventing backlash and further assembly failure.

(Third embodiment)
The fitting part 3 of 3rd Embodiment is shown in FIG. In the third embodiment, a plurality of sets of protrusions 101 and holes 202 are provided in the first embodiment.

  Two protrusions 101 are provided so as to be aligned in the vertical direction. Two holes 202 are provided in the vertical direction so as to correspond to the two protrusions 101. The fitting portion rib 202c is formed on the hole inner surface 202a of the hole portion 202 on the upper side, and the tip end portion of the fitting portion rib 202c is in contact with the opposing surface 101a.

  According to the present embodiment, since the number of parts to be fitted in the fitting part 3 can be increased, it is possible to prevent leakage of air-conditioning air between the projecting part 101 and the hole part 202, looseness of assembly, and poor assembly. The effect can be improved.

  In addition, with respect to the third embodiment, of the two hole inner surfaces 202a, the lower hole inner surface 202a may be provided with a fitting portion rib 202c in the same manner as the upper side.

(Fourth embodiment)
The fitting part 3 of 4th Embodiment is shown in FIG. 4th Embodiment changes the setting position of the fitting part rib 202c with respect to the said 1st Embodiment.

  In the present embodiment, a gap 110 a is formed between the fitting surface 101 b of the protrusion 101 and the fitting surface 202 b of the hole 202. And the fitting part rib 202c is formed in the fitting surface 202b, and the front-end | tip part of the fitting part rib 202c contacts the fitting surface 101b. That is, in this embodiment, with respect to the first embodiment, the other combination surface (fitting surface 101b) of the two combination surfaces when the protrusion 101 and the hole 202 are fitted together. In the fitting surface 202b), a fitting portion rib 202c is formed.

  The fitting portion rib 202c is formed on the back side of the hole portion 202 and is formed in a stepped shape with respect to the fitting surface 101b. The protruding tip portion of the fitting portion rib 202c is connected to the opposing surface 101a. It is formed as a parallel horizontal plane. Therefore, when the hole 202 is molded by a mold, the fitting portion rib 202c is shaped so as not to be undercut.

  In the present embodiment, only the setting position of the fitting portion rib 202c is changed from the upper side to the lower side with respect to the first embodiment, and the same effect as that of the first embodiment can be obtained.

(Fifth embodiment)
The fitting part 3 of 5th Embodiment is shown in FIG. 5th Embodiment changes the setting position of the fitting part rib 202c with respect to the said 1st Embodiment, and is set as the fitting part rib 101c.

  In the present embodiment, a fitting portion rib 101c is formed on the facing surface 101a among the facing surface 101a of the protrusion 101 and the hole inner surface 202a of the hole 202. The fitting portion rib 101 c is formed at the root portion of the protruding portion 101. The fitting portion rib 101c is formed in a stepped shape with respect to the facing surface 101a, and the protruding tip portion of the fitting portion rib 101c is formed as an inclined surface parallel to the facing surface 101a. Therefore, when the projection 101 is molded by a mold, the fitting portion rib 101c does not undercut.

  In the present embodiment, the fitting portion rib 202c is changed to the fitting portion rib 101c and is formed on the facing surface 101a with respect to the first embodiment, and the same effect as the first embodiment is obtained. Can be obtained.

(Sixth embodiment)
The fitting part 3 of 6th Embodiment is shown in FIG. 6th Embodiment changes the setting position of the fitting part rib 202c with respect to the said 1st Embodiment, and is set as the fitting part rib 101c.

  In the present embodiment, a gap 110 a is formed between the fitting surface 101 b of the protrusion 101 and the fitting surface 202 b of the hole 202. And the fitting part rib 101c is formed in the fitting surface 101b, and the front-end | tip part of the fitting part rib 101c contacts the fitting surface 202b. That is, in this embodiment, with respect to the first embodiment, the other combination surface (fitting surface 101b) of the two combination surfaces when the protrusion 101 and the hole 202 are fitted together. In the fitting surface 202b), a fitting portion rib 101c is formed.

  The fitting portion rib 101 c is formed at the root portion of the protruding portion 101. The fitting portion rib 101c is formed in a stepped shape with respect to the facing surface 101a, and the protruding tip portion of the fitting portion rib 101c is formed as a horizontal plane parallel to the facing surface 101a. Therefore, when the projection 101 is molded by a mold, the fitting portion rib 101c does not undercut.

  In this embodiment, compared with the first embodiment, the fitting portion rib 202c is changed to the fitting portion rib 101c and is formed on the facing surface 101b, and the same effect as the first embodiment is obtained. Can be obtained.

(Other embodiments)
In each of the above-described embodiments, the example in which the rib 102 is provided in the blower unit case 10 and the drainage unit 201 is provided in the air conditioner unit case 20 has been described, but the blower unit case 10 and the air conditioner unit case 20 may be interchanged. That is, the rib 102 may be provided in the air conditioner unit case 20 and the drainage unit 201 may be provided in the blower unit case 10.

  Further, when water flows from the air conditioner unit case to another air conditioner unit case, one air conditioner unit case may be provided with a rib, and the other air conditioner unit case to be fitted may be provided with a drain.

3 Fitting part 10 Blower unit case (first case member)
20 Air conditioner unit case (second case member)
101 Projection 101a Opposing surface (inclined surface, surface on the other side)
102 Rib 102b Rib tip 102c Lower side 110 Air conditioning unit case (case)
110a Clearance 201 Drainage portion 202 Hole portion 202a Hole inner surface (inclined surface, one side surface)
202c fitting part rib 203 end part

Claims (6)

A case (110) that forms an air passage through which blown air into the vehicle compartment passes is formed from at least the first case member (10) and the second case member (20) that are divided,
A case fitting structure for a vehicle air conditioner in which the first case member (10) and the second case member (20) are fitted in a predetermined direction,
The second case member (20) is provided with a drainage part (201) for discharging the moisture accumulated in the case (110) to the outside of the passenger compartment.
Inside the case (110), on the upper side in the vertical direction of the fitting portion (3) between the first case member (10) and the second case member (20) of the first case member (10). Is provided with a rib (102) extending toward the second case member (20).
The tip (102b) of the rib (102) on the second case member (20) side is more second than the end (203) of the drainage part (201) on the first case member (10) side. It is located on the case member (20) side and is inclined downward with respect to the horizontal direction,
The fitting portion (3) is a protrusion formed in the first case member (10) and protruding from the first case member (10) to the second case member (20) in the predetermined direction. A portion (101) and a hole (202) formed in the second case member (20) and into which the protrusion (101) is inserted,
The facing surface (101a) of the projection (101) facing the lower surface (102c) of the tip (102b), and the inner surface of the hole (202) combined with the facing surface (101a) ( 202a) is formed as an inclined surface (101a, 202a) inclined at an angle equivalent to the inclination angle of the tip (102b),
In the protrusion (101) and the hole (202), a gap (110a) is formed between any one of the two combinations of surfaces along the predetermined direction, Further, a fitting portion rib (202c) protruding from one side surface (202a) of the set of combination surfaces to the other side surface is formed, and a tip end portion of the fitting portion rib (202c) is formed on the other side. A case fitting structure for an air conditioner for vehicles, wherein the case is in contact with a side surface (202a).   The case fitting structure for a vehicle air conditioner according to claim 1, wherein the fitting portion rib (202c) is formed on the inclined surface (101a, 202a).   The case fitting structure for a vehicle air conditioner according to claim 1 or 2, wherein a plurality of the fitting ribs (202c) are provided.   In the projection (101) and the hole (202), when one set of combination surfaces among the two sets of combination surfaces along the predetermined direction is the inclined surface (101a, 202a), another set The case fitting structure for a vehicle air conditioner according to any one of claims 1 to 3, wherein the combination surface is formed as a plane along the predetermined direction.   The case fitting structure for an air conditioner for a vehicle according to any one of claims 1 to 4, wherein a plurality of sets of the protrusion (101) and the hole (202) are formed.   The inclination angle inclined downward on the tip portion (102b) is 15 ° or more and 90 ° or less with respect to the horizontal direction, according to any one of claims 1 to 5. Case fitting structure for a vehicle air conditioner.

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