JP6259304B2 - Air conditioning unit - Google Patents

Description

  The present invention relates to an air conditioning unit including a case main body and a duct assembled to the case main body.

  There exists what was disclosed by patent document 1 as this kind of an air-conditioning unit. As shown in FIGS. 7 and 8, the air conditioning unit 100 includes a case body having an air passage 107 for creating conditioned air and an opening 102 through which the air conditioned air flows through the air passage 107. 101 and a foot duct 110 that is connected to the opening 102 and guides conditioned air from the opening 102.

  A pair of concave walls 103 and a stopper wall 104 are provided on the periphery of the opening 102 of the case body 101. One end of each concave wall 103 is an opening 103a that opens to the outside. A pair of hooks 105 are provided outside the periphery of the opening 102 of the case body 101. The foot duct 110 has an in-duct air duct 111 inside. One end of the duct internal air passage 111 is an upstream opening 112, and the other end is a downstream opening 113. A pair of convex walls 114 that enter the concave wall 103 are provided at the periphery of the upstream opening 112. A pair of hooks 115 are provided outside the periphery of the upstream opening 112 of the foot duct 110.

  The convex wall 114 of the foot duct 110 is slid and inserted until it abuts against the stopper wall 104 from the opening 103a of the concave wall 103. Then, both the hook part 105 of the case body 101 and the hook part 115 of the foot duct 110 are hooked together. Thereby, the case main body 101 and the foot duct 110 are connected.

  In this air conditioning unit 100, it is only necessary to slide the foot duct 110 into the case body 101, so that the assembling property is good.

JP 2000-6640 A

  However, in the conventional air conditioning unit 100, the connection between the case main body 101 and the foot duct 110 is one place (specifically, the position of the opening 102 of the case main body 101), so that the joining rigidity is weak. There was a problem.

  Then, this invention was made | formed to solve the above-mentioned subject, and it aims at providing the air-conditioning unit which can improve the joining rigidity, ensuring the assembly property of a case main body and a duct. To do.

  The present invention includes a case main body provided with an air passage and having an opening through which the conditioned air passing through the air passage is guided, and a duct connected to the opening and guiding the conditioned air from the opening. The case main body and the duct have a first connecting part connected to the opening of the air passage, and an assembling direction same as an assembling direction of the first connecting part. It is connected with the 2nd connection part connected in the downstream of an air flow direction, It is an air-conditioning unit characterized by the air passage inside a duct being constituted by the perimeter surface of the case body, and the duct. .

  The first connecting portion is provided on the other side of the opening of the case body and on the other side of the duct on the upstream side in the air flow direction, and on the other side. Including one having an inlay concave wall into which the inlay convex wall enters.

  The second connecting portion includes an extended convex wall provided in the case main body, and an insertion convex wall provided in the duct and inserted into the back side of the extended convex wall in the assembling process. .

An extended convex wall provided on either the downstream side of the duct in the air flow direction and the case body, and an inserted convex wall provided on the other side and inserted into the back side of the extended convex wall in the assembly process Including those having.

  The duct may be provided with a pair of seal walls that are in close contact with the outer peripheral surface of the case main body and a pair of guide rib walls that sandwich both ends of the outer peripheral surface of the case main body.

  According to the present invention, the case main body and the foot duct are connected at two locations of the first connection portion and the second connection portion, so that the joining rigidity is high. Since the 1st connection part and the 2nd connection part are the same assembling directions, the fall of assembling property is not caused. As described above, the joining rigidity of the case main body and the foot duct can be improved while securing the assemblability.

1 is an overall perspective view of an air conditioning unit according to an embodiment of the present invention. FIG. 4 is a perspective view of the case main body before the foot duct is assembled according to the embodiment of the present invention. 1 is a perspective view of a foot duct as viewed from the inside, showing an embodiment of the present invention. 1A and 1B are cross-sectional views illustrating an intermediate process of assembling a foot duct to a case body, and FIG. 1B is a cross-sectional view illustrating a state in which the foot duct is assembled to the case body. FIG. 5 shows an embodiment of the present invention, and is an enlarged view of part A in FIG. 4B and an enlarged view of part B in FIG. FIG. 5 shows the embodiment of the present invention, and is a cross-sectional view taken along the line CC of FIG. It is a disassembled perspective view of the air conditioning unit of a prior art example. It is principal part sectional drawing of the air conditioning unit of a prior art example.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 to 6 show an embodiment of the present invention. As shown in FIG. 1, the air conditioning unit 1 includes an intake side case 2, a case main body 3 connected to the intake side case 2, and a foot duct 4 that is a duct connected to the case body 3. A blower passage (not shown) is formed in the intake case 2. In the air passage of the intake side case 2, an inside / outside air switching door (not shown) for switching the inside air / outside air of the introduced air and a blower (not shown) for sucking air into the air passage are arranged.

  As shown in FIG. 2, the case body 3 is formed by combining two divided case parts. In the case body 3, an air passage 31 that communicates with the air passage in the intake case 2 is formed. In the air passage 31 of the case body 3, an evaporator (not shown) that is a cooling source of air, a heater core (not shown) that is a heating source of air, and a mix door (variable mixing ratio of cold air and hot air) (Not shown) is arranged. A foot opening 34, which is an opening, is formed together with the defrost opening 32 and the vent opening 33 downstream of the air passage 31 of the case body 3. The openings 32 to 34 are opened and closed by doors (not shown). The foot opening 34 opens along the outer peripheral surface 35 with the direction orthogonal thereto as the opening surface. That is, an outer peripheral surface (outer peripheral surface below the opening) 35 is disposed below the foot opening 34.

  The foot duct 4 is connected to the foot opening 34. The foot duct 4 is connected to the case body 3 so as to cover the outer peripheral surface 35 of the case body 3.

  As shown in FIG. 3, the foot duct 4 has a back plate portion 41 and a pair of side plate portions 42 protruding from both ends. One surface of the foot duct 4 facing the back plate 41 is open. The foot duct 4 that surrounds the three surfaces is disposed so as to cover the outer peripheral surface 35 of the case body 3 as described above. Thus, an in-duct air duct 43 is formed surrounded by the foot duct 4 and the outer peripheral surface 35 of the case body 3.

  Each side plate portion 42 is provided with a blowing opening 45 for a driver seat and a passenger seat.

  Next, the connection structure between the case body 3 and the foot duct 4 will be described in detail. As shown in FIGS. 4 to 6, the case body 3 and the foot duct 4 include a first connection portion 50 connected to the foot opening 34 of the air passage 31 and an assembly direction a of the first connection portion 50 (FIG. 4). In the same assembling direction as shown in (a), they are connected at two locations with the second connecting portion 60 connected on the downstream side of the air flow direction of the foot duct 4.

  The first connecting portion 50 is provided with an inlay convex wall 36 provided on the periphery of the foot opening 34 of the case body 3 and an inlay concave wall provided on the upstream periphery of the foot duct 4 and into which the inlay convex wall 36 enters during the assembly process. 46. The inlay convex wall 36 and the inlay concave wall 46 are provided over the entire periphery excluding one side (side on the outer peripheral surface 35 side). The first connection portion 50 has a so-called inlay structure, and restricts displacement in all directions other than the reverse direction of the assembly direction a of the foot duct 4.

  The second connection portion 60 is provided at an extended convex wall 37 provided on the downstream side in the air flow direction of the case body 3 and the downstream peripheral edge of the foot duct 4 at a position separated from the first connection portion 50. The insertion convex wall 47 is inserted into the back side of the extended convex wall 37 in the assembling process. The extending convex wall 37 is formed by extending the lower side portion of the outer peripheral surface 35 downward.

  The foot duct 4 is provided with a pair of seal walls 48 that are in close contact with the outer peripheral surface 35, and a pair of guide rib walls 49 that surround both ends of the outer peripheral surface 35 of the case body 3 from positions outside the pair of seal walls 48. . The pair of seal walls 48, the pair of guide rib walls 49, and the second connection portion 60 regulate displacement in all directions other than the reverse direction of the assembly direction a of the foot duct 4. In other words, the foot duct 4 is assembled as the removal direction only in the reverse direction of the assembly direction a.

  The case body 3 and the foot duct 4 are provided with screw mounting portions 3a and 4a that overlap each other at the position where the foot duct 4 is assembled. Screws 61 (shown in FIG. 4B) are fastened to the screw mounting portions 3a and 4a. Thereby, the movement to the removal direction (opposite direction of the assembly | attachment direction a) of the foot duct 4 is blocked | prevented. The foot duct 4 is connected to the case main body 3 by the above structure.

  Next, a procedure for assembling the foot duct 4 to the case body 3 will be briefly described. As shown in FIG. 4A, the pair of seal walls 48 are pressed against the outer peripheral surface 35 of the case main body 3 at a position below the normal assembly position, and the pair of guide rib walls 49 are fixed to the case main body 3. A position where both sides of the outer peripheral surface 35 are sandwiched.

  Next, the foot duct 4 is slid upward (assembled direction a) while the pair of seal walls 48 are brought into contact with the outer peripheral surface 35 of the case body 3. Then, the inlay convex wall 36 of the case body 3 enters the inlay concave wall 46 above the foot duct 4, and the extended convex wall 37 of the case body 3 is on the back side of the insertion convex wall 47 below the foot duct 4. Plugged in. After sliding to the position where the inlay convex wall 36 completely enters the inlay concave wall 46, the screw 61 is fastened. This completes (state shown in FIG. 4B).

  As described above, the case main body 3 and the foot duct 4 have the first connecting portion 50 connected to the foot opening 34 of the air passage 31 and the same mounting direction as the mounting direction a of the first connecting portion 50. The duct 4 is connected to the second connection portion 60 connected downstream of the duct 4 in the air flow direction, and is surrounded by the outer peripheral surface 35 of the case body 3 and the foot duct 4 to form an in-duct air passage 43. Therefore, since the case main body 3 and the foot duct 4 are connected at two locations of the first connection portion 50 and the second connection portion 60, the joint rigidity is high. Since the 1st connection part 50 and the 2nd connection part 60 are the same assembly | attachment directions a, the fall of an assembly | attachment property is not caused. As described above, the joining rigidity of the case main body 3 and the foot duct 4 can be improved while securing the assemblability.

  Moreover, since the duct internal ventilation path 43 is comprised using not only the foot duct 4 but the outer peripheral surface 35 of the case main body 3, it becomes the weight reduction of the air conditioning unit 1, cost reduction, etc. In addition, the structure of the foot duct 4 is simplified.

  The first connecting portion 50 is provided with an inlay convex wall 36 provided on the periphery of the foot opening 34 of the case body 3 and an inlay concave wall provided on the upstream periphery of the foot duct 4 and into which the inlay convex wall 36 enters during the assembly process. 46. Therefore, since the 1st connection part 50 is what is called a spigot structure, the displacement to the direction orthogonal to the assembly direction a can be prevented, maintaining the airtightness of the connection location of the 1st connection part 50. FIG. In contrast to this embodiment, an inlay concave wall may be provided in the foot opening 34 of the case body 3 and an inlay convex wall may be provided in the foot duct 4.

  The second connection portion 60 is provided at an extended convex wall 37 provided on the downstream side in the air flow direction of the case body 3 and the downstream peripheral edge of the foot duct 4 at a position separated from the first connection portion 50. The insertion convex wall 47 is inserted into the back side of the extended convex wall 37 in the assembling process. Accordingly, the second connecting portion 60 is displaced in the direction orthogonal to the assembly direction a (the direction in which the seal wall 48 of the foot duct 4 is separated from the outer peripheral surface 35) while maintaining the airtightness of the connecting portion of the second connecting portion 60. Can be prevented. Note that the second connection portion 60 may also have an inlay structure as with the first connection portion 50.

  The foot duct 4 is provided with a pair of seal walls 48 that are in close contact with the outer peripheral surface 35, and a pair of guide rib walls 49 that sandwich both ends of the outer peripheral surface 35 of the case body 3 from positions outside the pair of seal walls 48. . Therefore, the airtightness of the air duct 43 in the duct can be secured by the pair of seal walls 48. Since the pair of guide rib walls 49 serve as a guide when the foot duct 4 is assembled, the assembling property is improved. The pair of seal walls 48 also function as a guide when the foot duct 4 is assembled. The pair of guide rib walls 49 also contributes to improving the airtightness of the duct internal air passage 43.

  In this embodiment, the duct is the foot duct 4, but the present invention can of course be applied to ducts other than the foot duct 4.

1 Air conditioning unit 3 Case body 4 Foot duct (duct)
31 Air passage 34 Foot opening (opening)
35 Peripheral surface 36 Inner convex wall 37 Extending convex wall 43 Air duct in duct 46 Inner concave wall 47 Insert convex wall 48 Seal wall 49 Guide rib wall 50 First connection portion 60 Second connection portion

Claims (4)

The air passage (31) is provided inside, the case body (3) having an opening (34) through which the conditioned air passing through the air passage (31) is guided, and connected to the opening (34), An air conditioning unit (1) comprising a duct (4) for guiding conditioned air from an opening (34),
The case body (3) and the duct (4) are assembled to the first connection part (50) connected to the opening (34) of the air passage (31) and the first connection part (50). In the same assembly direction as the direction (a), connected with the second connection portion (60) connected downstream of the air flow direction of the duct (4),
An air conditioning unit (1), characterized in that an air duct (43) in the duct is constituted by being surrounded by the outer peripheral surface (35) of the case body (3) and the duct (4). An air conditioning unit (1) according to claim 1,
The first connection part (50) is an inlay convex provided on either the peripheral edge of the opening (34) of the case body (3) or the upstream peripheral edge of the duct (4) in the air flow direction. An air conditioning unit (1) comprising a wall (36) and an inlay concave wall (46) provided on the other side into which the inlay convex wall (36) enters during the assembly process. An air conditioning unit (1) according to claim 1 or claim 2,
The second connection part (60) is provided on the extended convex wall (37) provided on the case body (3) and on the duct (4), and is attached to the extended convex wall (37) in the assembling process. An air conditioning unit (1) having an insertion convex wall (47) to be inserted into the back side. The air conditioning unit (1) according to any one of claims 1 to 3,
The duct (4) sandwiches a pair of seal walls (48) that are in close contact with the outer peripheral surface (35) of the case main body (3) and both ends of the outer peripheral surface (35) of the case main body (3). An air conditioning unit (1) characterized in that a pair of guide rib walls (49) are provided.

Images