JP2005297914A - Mounting structure of air conditioning unit for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure capable of sufficiently securing rigidity of a cross car beam without lowering air blow resistance of conditioned air, even in the structure for blowing the conditioned air from an air conditioning unit to a cabin via the cross car beam. <P>SOLUTION: This structure is provided with the cross car beam 4 arranged to cross the cabin on a rear side of an instrument panel and the air conditioning unit 2 mounted on the cross car beam 4. A block 12 for blowing air having air blow holes 15, 16 and 17 to be parts of an air blow path of the air conditioning unit 2 is provided at an air conditioning unit mounting portion in the cross car beam 4. A duct 3 for blowing air to the cabin and the air blow holes 15, 16, 17 of the block 12 for blowing air are connected to be communicated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mounting structure for a vehicle air conditioning unit in which an air conditioning unit is mounted on a cross car beam.

  An air conditioning unit that performs air conditioning of the passenger compartment is disposed on the back side of the instrument panel on the front side of the passenger compartment in the automobile. Further, in the automobile, in order to ensure the rigidity in the lateral direction of the vehicle body, the cross car beam is disposed on the back side of the instrument panel so as to cross the passenger compartment. For this reason, it is possible to reduce body parts and save space by associating and assembling the air conditioning unit and the cross car beam.

  FIG. 5 shows an instrument panel made from such a viewpoint, and is disclosed in Japanese Patent Application Laid-Open No. 2002-187459.

  As shown in FIG. 5, audio 101 and 102 and an air conditioner controller 103 are attached to the passenger compartment side of the instrument panel 100. On the back side of the instrument panel 100, a cross car beam 110 made of a frame structure is attached and an air conditioning unit 120 is arranged.

  The air conditioning unit 120 includes components such as a blower 121, an evaporator 122, and a heater core 123 inside, and is disposed below the cross car beam 110. A differential blowing opening 125 is formed in the upper part of the air conditioning unit 120, and a differential duct 130 is connected to the differential blowing opening 125.

The cross car beam 110 extends in a direction crossing the passenger compartment (through direction in the drawing), and both ends thereof are fixed to the vehicle body (not shown). Further, a leg portion 111 extends downward at a central portion in the length direction, and the leg portion 111 is fixed to the vehicle body. The air conditioning unit 120 is attached to the cross car beam 110 by being supported on the legs 111. Further, the cross car beam 110 includes a hollow air guide passage 115, and a vent blowing opening 117 of the air guide passage 115 communicates with the air outlet of the air conditioning unit 120. In other words, the cross car beam 110 serves as a passage for the conditioned air from the air conditioning unit 120, and the air guide passage 115 is connected to the duct so that the passenger compartment is air-conditioned.
JP 2002-187459 A

  In the structure shown in FIG. 5, since the hollow air guide passage 115 is formed in the cross car beam 110, the rigidity as the cross car beam 110 is lowered, and a predetermined rigidity cannot be obtained. . On the other hand, in order to give rigidity to the cross car beam 110, it is necessary to make the air guide passage 115 small. However, in this case, since the blowing resistance of the air guide passage 115 is lowered, the air conditioning unit 120 The conditioned air cannot be sufficiently supplied to the passenger compartment.

  The present invention has been made in consideration of such conventional problems, and the rigidity of the cross car beam is obtained even when the air conditioned air from the air conditioning unit is blown through the cross car beam. It is an object of the present invention to provide a mounting structure for a vehicle air-conditioning unit that can sufficiently secure the air-conditioning air and that does not reduce the blowing resistance of the conditioned air.

  The invention according to claim 1 is a mounting structure of a vehicle air conditioning unit in which the air conditioning unit is fixed to the vehicle body by a cross car beam disposed so as to cross the passenger compartment on the back side of the instrument panel. The crosscar beam from a blower block having a blower hole whose opening shape coincides with the provided opening, and a side beam extending from opposite side surfaces of the blower block and having an end fixed to the vehicle body The duct is communicated with the outlet side opening surface of the blower block while the opening portion of the air conditioning unit is communicated with the inlet side opening surface of the blower block, and the air conditioning unit passes through the blower block. It is fixed to the cross car beam.

  The invention according to claim 2 is the mounting structure of the air conditioning unit for vehicle according to claim 1, wherein the blower block and the side beam are configured as separate members, and the blower block and the side beam are fastened. It can be assembled by a member.

  Invention of Claim 3 is the attachment structure of the air conditioning unit for vehicles of Claim 1 or 2, Comprising: The engaging means to mutually engage with the said ventilation block and an air conditioning unit is provided, The said The blower block and the air conditioning unit are fastened by a fastening screw in an engaged state of the engaging means.

  Invention of Claim 4 is the attachment structure of the air conditioning unit for vehicles of any one of Claims 1-3, Comprising: The uneven | corrugated shape with which the external shape of the said air blower block fits with the uneven | corrugated shape of an air conditioning unit It is characterized by becoming.

  According to the first aspect of the present invention, the blower block having the blower holes is a component of the cross car beam, the air conditioning unit is attached to the blower block, and the blower hole of the blower block is the vehicle. Since it is connected in communication with the duct that blows air to the compartment, the conditioned air of the air conditioning unit is supplied to the duct via the air vent, and the passenger compartment can be air-conditioned.

  In the invention according to the first aspect, the air blowing holes formed in the air blowing block serve as a passage for the conditioned air, and it is not necessary to form the air conditioned air passage in the entire cross car beam. For this reason, the rigidity of the cross car beam can be ensured. Moreover, even if the air blowing hole is enlarged, the rigidity of the entire cross car beam is not affected. Thereby, it can guide to a duct, without reducing the ventilation resistance of the conditioned air from an air-conditioning unit.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the blower block is a separate body, and the cross car beam is configured by being assembled with the side beam of the cross car beam. Therefore, the cross car beam can be changed according to the vehicle type, and can be versatile.

  In addition, the disassembly of the cross car beam and the air conditioning unit is facilitated, and the workability of repair and maintenance is improved. Furthermore, since a pipe material can be used as the side beam, the cost can be reduced.

  According to the third aspect of the present invention, in addition to the effects of the first and second aspects of the invention, the engagement means provided on the blower block and the air conditioning unit are engaged, whereby the air conditioning unit with respect to the cross car beam is engaged. Positioning can be performed easily and accurately. For this reason, the assembly workability of the cross car beam and the air conditioning unit is improved.

  According to the fourth aspect of the present invention, in addition to the effects of the first to third aspects, the air conditioning unit for the cross car beam is formed by fitting the uneven shape of the air blowing block and the uneven shape of the air conditioning unit. Therefore, the assembling workability is improved.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. In each embodiment, the same member is assigned the same reference numeral.

(First embodiment)
1 to 4 show a first embodiment of the present invention, FIG. 1 is an exploded perspective view, FIG. 2 is a front view in an assembled state, and FIG. 3 is a side view in the assembled state.

  The vehicle air conditioning unit mounting structure 1 of this embodiment includes a cross car beam 4 and an air conditioning unit 2 assembled to the cross car beam 4. The cross car beam 4 and the air conditioning unit 2 are arranged on the back side of an instrument panel (not shown) provided on the front side of the passenger compartment.

  The cross car beam 4 extends in the width direction of the vehicle body on the back side of the instrument panel, and mounting brackets 11 (see FIG. 2) provided at both ends in the length direction are fixed to the vehicle body by screws or the like. The cross car beam 4 includes a blower block 12 positioned at a substantially central portion in the length direction, and a pair of side beams 13 and 14 extending along the vehicle width direction from the side surfaces of both ends of the blow block 12 in the length direction. And is composed of. The side beams 13 and 14 are configured by a member separate from the air blowing block 12 and are configured to give the cross car beam 4 predetermined rigidity by using a pipe material. The mounting bracket 11 described above is provided integrally with the tip portions of the side beams 13 and 14.

  The blower block 12 is formed in a substantially rectangular shape when viewed from above, and side bracket portions 12a and 12b to which the side beams 13 and 14 are connected are formed on both ends in the length direction so as to stand up. Yes. A substantially rectangular main block portion 12c is integrally formed between the side bracket portions 12a and 12b.

  The main block portion 12c is for attaching an air conditioning unit 2 to be described later, and the air conditioning unit 2 is arranged at a substantially central portion of the cross car beam 4 by positioning the blower block 12 at a substantially central portion of the cross car beam 4. Can be attached to. Three air holes 15, 16, and 17 are formed in the main block portion 12c so as to penetrate in the vertical direction (thickness direction). The three air blowing holes 15, 16, and 17 are formed so as to be independent from each other.

  These ventilation holes 15, 16, and 17 serve as passages of conditioned air from the air conditioning unit 2, and openings 25, 26, and 27 of the air conditioning unit 2 described later on the inlet side opening surface 12 g of the ventilation block 12. The vent duct 3 (described later) is communicated with the outlet side opening surface 12h of the blower block 12, and the air conditioning unit 2 is fixed to the cross car beam 4 via the blower block 12.

  The air conditioning unit 2 includes components such as a blower, an evaporator, and a heater core (not shown). A center opening 25 and side openings 26 and 27 are formed at the upper end. The center opening 25 corresponds to the blower hole 15 in the blower block 12, and the side openings 26 and 27 correspond to the left and right blower holes 16 and 17 in the blower block 12. Therefore, the air blowing holes 15, 16, and 17 in the air blowing block 12 are formed to have substantially the same shape and substantially the same size as the openings 25, 26, and 27 of the corresponding air conditioning unit 2. Furthermore, from the air conditioning unit 2, a differential passage 29 for preventing fogging to the front window extends upward.

  The air conditioning unit 2 is attached to the blower block 12 so as to be positioned directly below the blower block 12. The air conditioning unit 2 is attached to the blower block 12 by a fastening screw 41, and a hole 12 d through which the fastening screw 41 passes is formed in the blower block 12. A screw hole 2d into which the fastening screw 41 is screwed is formed in the part. In this case, the hole 12d of the blower block 12 is formed in the stopper portion 12f that is thin and hangs downward. The stopper portion 12f is a portion with which the upper side surface of the air conditioning unit 2 comes into contact when the air conditioning unit 2 is assembled.

  The blowing block 12 and the air conditioning unit 2 are provided with engaging means that engage with each other. In this embodiment, the engaging means includes an engaging pin 42 provided in the air conditioning unit 2 and an engaging hole 43 engaged with the blower block 12 so as to correspond to the engaging pin 42. . In this case, the engagement pin 42 is formed in a protruding shape on the side surface of the differential passage 29 extending upward from the air conditioning unit 2, and the engagement hole 43 is formed on the back surface of the central air hole 15 forming portion in the air blowing block 12. ing. Such engagement pins 42 and engagement holes 43 are engaged with each other, whereby the positioning of the air conditioning unit 2 with respect to the cross car beam 4 can be performed easily and reliably.

  Furthermore, in this embodiment, the outer shape of the blower block 12 is formed in a concavo-convex shape that fits with the concavo-convex shape of the air conditioning unit 2, and the air conditioning unit 2 includes the differential passage 29. A fitting recess 44 that fits into the differential passage 29 is formed on the back surface of the block 12. By fitting the differential passage 29 and the fitting recess 44, the air conditioning unit 2 can be firmly positioned with respect to the cross car beam 4, and the assembling workability is improved.

  The vent duct 3 constitutes a duct for sending conditioned air from the air conditioning unit 2 into the vehicle interior, and is attached to the block 12 while being covered on the blower block 12. The vent duct 3 includes a center duct 31 connected to a center vent (not shown) on the passenger compartment side, and side ducts 32 and 33 provided on both sides of the center duct 31. The side ducts 32 and 33 are connected to a side vent (not shown) on the passenger compartment side.

  The center duct 31 in the vent duct 3 corresponds to the central blow hole 15 of the blower block 12, and the left and right side ducts 32 and 33 correspond to the left and right blow holes 16 and 17 of the blower block 12. The center duct 31 and the left and right side ducts 32, 33 are integrated, and are fitted and fixed between the side bracket portions 12a, 12b of the blower block 12 in an integrated state.

  Next, the assembly procedure of this embodiment will be described. The air conditioning unit 2 is brought close to the blowing block 12 of the cross car beam 4 fixed to the vehicle body, and the engaging pin 42 is engaged with the engaging hole 43 of the blowing block 12. At the same time, the differential passage 29 of the air conditioning unit 2 is fitted into the fitting recess 44 of the blower block 12. Due to the engagement between the engagement pin 42 and the engagement hole 43 and the engagement between the differential passage 29 and the engagement recess 44, the air conditioning unit 2 is well positioned on the blower block 12, and its center opening 25. Coincides with the central blow hole 15 of the blower block 12, and the left and right side openings 26 and 27 coincide with the left and right blow holes 16 and 17 of the blower block 12. The combination of the engagement pin 42 and the engagement hole 43 and the combination of the differential passage 29 and the fitting recess 44 may be either one.

  After positioning the air conditioning unit 2 to the air blowing block 12, the air conditioning unit 2 is assembled to the air blowing block 12 by screwing the fastening screw 41 from the air blowing block 12 to the air conditioning unit 2. After this assembly, the vent duct 3 is inserted and assembled between the side bracket portions 12a and 12b of the blower block 12. Due to the insertion between the side bracket portions 12a and 12b, the vent duct 3 has its center duct 31 aligned with the central blow hole 15 of the blower block 12, and the left and right side ducts 32 and 33 are left and right of the blow block 12. These air holes 16 and 17 coincide with each other. Thereafter, the vent duct 3 is fixed to the blower block 12 by an appropriate means such as a screw.

  In such a state, the air blowing holes 15, 16, and 17 of the air blowing block 12 are connected in communication with the corresponding ducts 31, 32, and 33. Therefore, the temperature-controlled air from the air conditioning unit 2 can be supplied to the corresponding ducts 31, 32, 33 via the air blowing holes 15, 16, 17, and air conditioning is performed on necessary portions in the passenger compartment. it can.

  In such an embodiment, the ventilation holes 15, 16, and 17 formed in the blower block 12 serve as a passage for the conditioned air from the air conditioning unit 2, and thus it is necessary to form a passage for the conditioned air in the entire cross car beam 4. There is no. For this reason, the rigidity of the cross car beam 4 can be ensured. Further, even if the air blowing holes 15, 16, and 17 serving as the air-conditioned air passage are enlarged, the rigidity of the cross car beam 4 is not affected. For this reason, the ventilation holes 15, 16, and 17 can be formed so as not to lower the blowing resistance of the conditioned air from the air conditioning unit 2, and the air conditioning of the vehicle interior can be performed smoothly and efficiently.

  Furthermore, in this embodiment, since the air conditioning unit 2 is assembled by screwing the fastening screw 41 in the engaged state of the engagement pin 42 and the engagement hole 43, the air conditioning unit 2 can be assembled with high accuracy. At the same time, the workability of assembly is improved.

(Second Embodiment)
FIG. 4 shows an exploded perspective view of an embodiment of the present invention. In this embodiment, the left and right side beams 13 and 14 constituting the cross car beam 4 and the air blowing block 12 provided therebetween are separated.

  Mounting plates 53 and 54 are integrally provided at the ends of the left and right side beams 13 and 14 on the air blowing block 12 side, and the mounting plates 53 and 54 are provided on the left and right side brackets of the air blowing block 12, respectively. The left and right side beams 13 and 14 and the blower block 12 are assembled by contacting the outer surfaces of the portions 12a and 12b. The assembly of the left and right side beams 13 and 14 and the blower block 12 is performed by a screw 51 as a fastening member, and the mounting plates 53 and 54 are in contact with the side bracket portions 12a and 12b. The process is completed by screwing the screws 51 into the side bracket portions 12a and 12b from the mounting plates 53 and 54 side.

  Since the cross car beam 4 is configured by such assembly, the air conditioning unit 2 can be assembled to the blower block 12 in the same manner as in the first embodiment. Therefore, this embodiment also has the same operations and effects as the first embodiment.

  In this embodiment, the length, shape, or structure of the cross car beam 4 can be changed according to the vehicle type by separating the blower block 12 and the left and right side beams 13 and 14 as described above. Therefore, it can be made versatile. In addition, since the assembled cross car beam 4 and the air conditioning unit 2 can be easily disassembled, the workability of these repairs and maintenance is improved. Furthermore, since an inexpensive pipe material can be used as the left and right side beams 13, 14, the cost can be reduced.

  In addition to the above, in this embodiment, legs 55 and 56 are attached to the attachment plates 53 and 54 of the left and right side beams 13 and 14. The lower ends of the leg portions 55 and 56 are fixed to the vehicle body by screwing or the like, so that the left and right side beams 13 and 14 can be firmly supported. Since the leg portions 55 and 56 are provided on the mounting plates 53 and 54 that sandwich the air blowing block 12, the leg portions 55 and 56 support the air conditioning unit 2 that is attached to the air blowing block 12. For this reason, the support force of the air conditioning unit 2 can be strengthened, and the air conditioning unit 2 can be supported stably. In addition, you may provide the above leg parts 55 and 56 in the edge part by the side of the ventilation block 12 of the side beams 13 and 14 in 1st Embodiment.

It is a disassembled perspective view of 1st Embodiment of this invention. It is a front view of the assembly | attachment state of 1st Embodiment. It is a side view of the assembly state of a 1st embodiment. It is a disassembled perspective view of 2nd Embodiment of this invention. It is sectional drawing which shows the conventional structure which assembled | attached the air conditioning unit to the cross car beam.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cross car beam 2 Air-conditioning unit 3 Vent duct 12 Blower block 13, 14 Side beam 15, 16, 17 Blower hole 29 Def vent 41 Fastening screw 42 Engagement pin 43 Engagement hole 44 Fitting recessed part 51 Screw 53, 54 Mounting plate 55,56 legs

Claims (4)

A vehicle air conditioning unit mounting structure (1) in which the air conditioning unit (2) is fixed to the vehicle body by a cross car beam (4) arranged to cross the passenger compartment on the back side of the instrument panel,
An air blowing block (12) having air holes (15, 16, 17) whose opening shapes coincide with the openings (25, 26, 27) provided in the air conditioning unit (2);
The cross car beam (4) is composed of side beams (13, 14) extending from opposite side surfaces of the air blowing block (12) and having end portions fixed to the vehicle body,
The opening (25, 26, 27) of the air conditioning unit (2) communicates with the inlet-side opening (12g) of the blowing block (12), and the outlet-side opening of the blowing block (12). The vehicle air conditioning unit mounting structure is characterized in that the duct (3) communicates with (12h) and the air conditioning unit (2) is fixed to the cross car beam (4) via the blower block (12). . The vehicle air conditioning unit mounting structure (1) according to claim 1,
The blower block (12) and the side beams (13, 14) are configured as separate members, and the blower block (12) and the side beams (13, 14) can be assembled by the fastening member (51). A structure for mounting an air conditioning unit for a vehicle. The vehicle air conditioning unit mounting structure (1) according to claim 1 or 2,
Engaging means (42, 43) are provided to engage the air blowing unit (12) and the air conditioning unit (2). The vehicle air conditioning unit mounting structure, wherein the block (12) and the air conditioning unit (2) are fastened by a fastening screw (41). The vehicle air conditioning unit mounting structure (1) according to any one of claims 1 to 3,
The vehicle air-conditioning unit mounting structure is characterized in that an outer shape of the air blowing block (12) is a concave-convex shape (44) fitted to the concave-convex shape of the air-conditioning unit (2).

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