JP2008001172A - Door supporting structure of air conditioner case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door supporting structure of an air conditioner case capable of making rattling of a door smaller. <P>SOLUTION: In this door supporting structure, a case assembly 10 forming a cavity at the inside by butting opening edges 2c and 3c of two bottomed cylindrical cases 2 and 3 formed by resin against each other, and a door 4 having a shaft part 4a and a planar part 4b projectingly provided in the shaft part 4a are provided, and the shaft part 4a of the door 4 is rotatably mounted between the two cases 2 and 3 and is extended along side walls 2b and 3b of the cases 2 and 3. A cross-sectionally substantially C-shaped sleeve 5 having an opening 5a extended along the shaft direction is externally fitted to the shaft part 4a. The sleeve 5 is arranged in a part where the opening edges 2c and 3c of the two cases 2 and 3 are butted against each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a door support structure for an air conditioner case.

As this type of air conditioner case, there is known an air conditioner case that is assembled such that two resin-molded bottomed cylindrical cases are joined together so that a cavity is formed inside (for example, Patent Document 1). reference).
JP 2001-270318 A

  In this case, in order to more easily and surely remove the mold used when the case is resin-molded, the inner cavity of each bottomed cylindrical case is usually expanded on the opening side compared to the bottom side. May be set.

  Here, between the two bottomed cylindrical cases, a door having a plate-like portion protruding from the shaft portion is rotatably mounted and the shaft portion extends along the side wall of the bottomed cylindrical case. In the vicinity of the opening edge far from the bottom, there is a possibility that the gap between the shaft portion and the side wall of the case becomes large and contributes to the rattling of the door.

  Then, an object of this invention is to obtain the door support structure of the air conditioner case which can make the backlash of a door smaller.

  The present invention includes a case assembly (10) in which the opening edges (2c, 3c) of two bottomed cylindrical cases (2, 3) molded with resin are brought into contact with each other to form a cavity therein, and a shaft portion (4a). And a door (4) having a plate-like portion (4b) projecting from the shaft portion (4a), and the shaft portion (4a) of the door (4) is the two cases (2, 3). In the door support structure of the air conditioner case that is constructed so as to be rotatable between the two cases (2, 3) and extends along the side walls (2b, 3b), the shaft (4a) A sleeve (5) having a substantially C-shaped cross section having an opening (5a) extending along the axial direction is externally fitted, and the sleeve (5) is attached to the opening edges (2c, 3c) of the two cases (2, 3). ) The most important feature is that it is arranged at the part where they are abutted.

  According to the present invention, it is possible to fill the gap that is widened between the opening edge and the shaft portion with the sleeve, and it is possible to suppress backlash of the shaft portion.

  Hereinafter, preferred embodiments of the present invention will be described.

  FIG. 1 is an exploded perspective view of a part of the air conditioner according to the present embodiment, FIG. 2 is a perspective view of a door used in the air conditioner, and FIG. 3 is a perspective view of a sleeve fitted around the shaft portion of the door. 4 is a perspective view showing a state where the shaft portion of the door is pivotally supported by a bearing portion formed in the air conditioner case, FIG. 5 is a cross-sectional view taken along the line V-V in FIG. 1, and FIG. It is VI-VI sectional drawing.

  In the air conditioner 1 according to the present embodiment, a case assembly 10 having a cavity inside is formed by joining the resin-molded two bottomed cylindrical cases 2 and 3 with the opening edges 2c and 3c butting each other. Is configured.

  The case 2 is provided with a bottom wall 2a and a peripheral wall (side wall) 2b having a substantially constant height that is substantially suspended from the periphery thereof, and is formed in a bottomed cylindrical shape. And a peripheral wall (side wall) 3b having a substantially constant height substantially suspended from the periphery thereof, and is formed in a bottomed cylindrical shape. However, these bottom walls 2a, 3a and peripheral walls 2b, 3b are not completely closed, and openings 2e, 3e and the like are appropriately formed.

  The case assembly 10 accommodates various parts such as a filter and an evaporator (not shown) and forms an air passage therein. And in order to open and close the air passage and to switch a flow path, the door 4 is rotatably supported by the case assembly 10.

  As shown in FIG. 2, the door 4 includes a substantially cylindrical shaft portion 4a and a substantially rectangular plate-shaped plate portion 4b protruding from the shaft portion 4a. The end portions 4c and 4c are inserted into and supported by bearing holes 2d and 3d formed in the case assembly 10. In addition, the sealing material 7 is affixed on the front and back of the plate-shaped part 4b (refer FIG. 6).

  As shown in FIG. 1, the shaft portion 4 a of the door 4 is rotatably mounted between the two cases 2 and 3, and extends along the peripheral walls 2 b and 3 b of the two cases 2 and 3. Has been.

  By the way, when the cases 2 and 3 are resin-molded, for each case 2 and 3, two molds are used that sandwich the bottom walls 2a and 3a and the peripheral walls 2b and 3b from inside and outside. That is, after molding, it is necessary to pull out the inner mold from the inside of the cylinder. In this embodiment, the peripheral walls 2b and 3b of the cases 2 and 3 As shown in FIG. 5, it is formed in a shape slightly expanded from the bottom wall 2a (or bottom wall 3a) side to the opening edges 2c, 3c side.

  Accordingly, the gap 20 between the shaft portion 4a of the door 4 extending along the peripheral walls 2b and 3b and the peripheral walls 2b and 3b is closer to the opening edges 2c and 3c than the bottom wall 2a (or bottom wall 3a). In this case, the movable range increases at the substantially central portion of the shaft portion 4a supported at both ends by the case assembly 10, so that the deformation of the shaft portion 4a and the rattling of the door 4 increase. There is a risk of it.

  Therefore, in the present embodiment, the sleeve 5 is externally fitted at a position corresponding to the portion where the opening edges 2c and 3c of the shaft portion 4a are abutted with each other, and the gap 20 is filled with the sleeve 5.

  As shown in FIG. 3, the sleeve 5 is resin-molded as a cylindrical body having a substantially C-shaped cross section having a slit-like opening 5a extending along the axial direction.

  And the thin part 5c is provided in the part facing the opening 5a, The opening 5a side can be elastically expanded by using this thin part 5c as a fulcrum. Therefore, by pressing the opening 5a against the shaft portion 4a, the opening 5a is expanded, and the sleeve 5 can be easily fitted into the shaft portion 4a. As shown in FIG. 2, a pair of flange portions 4d and 4d are formed at a substantially central portion in the longitudinal direction of the shaft portion 4a with a gap substantially the same as or slightly longer than the height of the sleeve 5, and these flange portions 4d. 4d so that the sleeve 5 is gently sandwiched so that the sleeve 5 is not displaced in the axial direction. That is, a section sandwiched between the pair of flange portions 4d and 4d in the shaft portion 4a is a sleeve mounting portion 4e.

  In the present embodiment, as shown in FIG. 3, a recess 5 e is provided on the outer peripheral surface 5 b of the sleeve 5. According to this configuration, the thin portion 5c can be formed by providing the recess 5e, and the lubricant is used to improve the slidability between the outer peripheral surface 5b and the bearing portion (the inner peripheral surface) 2f. In this case, the recess 5e can be used as a grease reservoir to increase grease retention, reduce rotational friction, reduce wear, and suppress the generation of noise and vibration. The effect that it can do is acquired.

  In the thin portion 5c, a recess may be formed on the inner peripheral surface 5d side of the sleeve 5, and further, grease is interposed between the inner peripheral surface 5d and the sleeve mounting portion 4e (the outer peripheral surface thereof). May be. In the present embodiment, the concave portion has a V-groove shape, but may have another cross-sectional shape such as a U-groove shape, or may have a shape other than the groove, such as a relatively small bottomed concave portion arranged side by side. .

  As described above, according to the present embodiment, the sleeve 5 having the substantially C-shaped cross section having the opening 5a extending along the axial direction is externally fitted to the shaft portion 4a. , 3 are arranged in a portion where the opening edges 2c, 3c are abutted with each other, so that the gap 20 between the shaft portion 4a and the peripheral walls 2b, 3b is widened on the opening edges 2c, 3c side in order to improve the die-cutting property, The gap 20 can be filled with the sleeve 5, so that bending deformation of the shaft portion 4 a, rattling of the door 4, and generation of sound and vibration can be suppressed.

  Further, since the sleeve 5 can be attached to and detached from the shaft portion 4a, rattling can be more reliably suppressed by selectively fitting the sleeve 5 according to the gap 20, and the specifications (shape) are different. There is also an advantage that the same door 4 can be applied to the case assembly by exchanging the sleeve 5 (that is, the door 4 can be easily shared).

  Further, according to the present embodiment, the thin portion 5c is provided in the portion facing the opening 5a of the sleeve 5, and the opening 5a is configured to be elastically expandable with the thin portion 5c as a fulcrum. Can be easily fitted into the shaft portion 4a. Further, at the time of maintenance or the like, it is possible to easily remove the sleeve 5 from the shaft portion 4a.

  Furthermore, according to this embodiment, since the recessed part 5e is formed in the outer peripheral surface 5b of the sleeve 5 in the thin part 5c, the thin part 5c can be formed by this recessed part 5e, and the said recessed part 5e is lubricated. Since it can be used as a grease reservoir as an agent, rotational friction can be reduced, wear can be reduced, and generation of sound and vibration can be further suppressed.

  Furthermore, in this embodiment, as shown in FIGS. 5 and 6, the shaft portion 4a and the sleeve 5 are substantially columnar or cylindrical, and the inner peripheral surfaces of the side walls 2b and 3b are also inclined substantially cylindrical surfaces. Therefore, they are in contact with each other through a clearance. Therefore, there is an advantage that the door can be easily assembled to the case without worrying about the angle of attachment of the sleeve.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various modifications can be made. For example, the shapes of the case and the door are not limited to those disclosed in the above embodiment, and the shape of the sleeve can be variously changed.

The disassembled perspective view of a part of the air conditioner according to the embodiment of the present invention. The perspective view of the door used with the air conditioner concerning one Embodiment of this invention. The perspective view of the sleeve fitted by the axial part of the door of the air conditioner concerning one Embodiment of this invention. The perspective view which shows the state by which the axial part of the door was pivotally supported by the bearing part formed in the air conditioner concerning one Embodiment of this invention. VV sectional drawing of FIG. VI-VI sectional drawing of FIG.

Explanation of symbols

2,3 Case 2b, 3b Peripheral wall (side wall)
2c, 3c Opening edge 4 Door 4a Shaft 4b Plate-like part 5 Sleeve 5a Opening 5b Outer peripheral surface 5c Thin part 5d Inner peripheral surface 5e Concave part 10 Case assembly

Claims (3)

A case assembly (10) in which the opening edges (2c, 3c) of two bottomed cylindrical cases (2, 3) molded with resin are brought into contact with each other to form a cavity therein, a shaft portion (4a), and the shaft A door (4) having a plate-like portion (4b) projecting from the portion (4a), and the shaft portion (4a) of the door (4) is rotated between the two cases (2, 3). In the door support structure of the air conditioner case that is movably installed and extends along the side walls (2b, 3b) of the two cases (2, 3),
A sleeve (5) having a substantially C-shaped cross section having an opening (5a) extending along the axial direction is fitted onto the shaft (4a), and the sleeve (5) is attached to two cases (2, 3). A door support structure for an air conditioner case, wherein the opening edges (2c, 3c) of the air conditioner case are arranged at a portion where they are butted.   A thin portion (5c) is provided in a portion of the sleeve (5) facing the opening (5a), and the opening (5a) is configured to be elastically expandable with the thin portion (5c) as a fulcrum. The door support structure for an air conditioner case according to claim 1.   The door support structure for an air conditioner case according to claim 2, wherein a concave portion (5e) is formed in the outer peripheral surface (5b) of the sleeve (5) in the thin portion (5c).

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