JP2012171465A - Air-conditioning case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air-conditioning case constituted of a plurality of divided cases firmly joined by simple operation.SOLUTION: This air-conditioning case 20 includes a first divided case 21 for forming a first space 21a, a second divided case 22 for forming a second space 22a, and a joining means 24 for mutually slidably joining the first divided case 21 and the second divided case 22 for connecting the first space 21a and the second space 22a. The joining means 24 includes a first fitting part 30 formed in the first divided case 21 and extending in the sliding direction, and a second fitting part 40 formed in the second divided case 22 so as to be slidably fitted to the first fitting part 30. The first fitting part 30 and the second fitting part 40 can support force substantially orthogonal to the sliding direction when mutually fitted, that is, force in the tensile direction to the joined first divided case 21 and second divided case 22.

Description

  The present invention relates to an air conditioning case in which an air flow path is formed inside, and relates to an air conditioning case composed of a plurality of combined divided cases.

  This type of air conditioning case according to the prior art is described in US Pat. In this prior art air conditioning case, a rectangular frame provided in the lower case is used to prevent the air leakage by fitting the end portions of the upper and lower cases by concave and convex fitting and to join the upper and lower cases. One-touch type coupling means for hooking the shape portion on a locking claw portion provided in the upper case is used. However, screw fastening is also used together.

JP 2008-80931 A

  Although the case where the one-touch type coupling means using the rectangular frame-shaped part and the locking claw part and the screw fastening are used together as shown in Patent Document 1 is used as an air conditioning case for a vehicle, it is assembled. In order to reduce the cost, it is also required that the screw fastening is not performed. Usually, this type of case is often made of plastic, so that the lack of rigidity or creep deformation of the one-touch type coupling means becomes a problem, and screw fastening must be used together as an air conditioning case for vehicles. There wasn't.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide an air conditioning case including a plurality of divided cases that are firmly coupled by a simple operation.

  In order to solve the above-described problem, the first aspect of the present invention includes a first divided case (21) that forms the first space (21a) and a second divided case (22) that forms the second space (22a). ), And the first dividing case (21) and the second dividing case (22) are coupled to each other by sliding the first dividing case (21a) and the second dividing case (22) to connect the first space (21a) and the second space (22a) A first fitting portion (30) formed in the first split case (21) and extending in the sliding direction, and a first fitting A second fitting portion (40) formed in the second split case (22) so as to slide and fit to the portion (30), and the first fitting portion (30) and the second fitting portion (30). When the fitting portions (40) are fitted to each other, the force is substantially perpendicular to the direction of the slide. It provides a combined first separate casing (21) and the air conditioning case, characterized in that to support the pulling direction of the force on the second case member (22) (20).

  According to this, the first split case (21) and the second split case (22) can be easily combined with each other by the fitting in the sliding direction, and the first fitting portion (30) and the second fitting can be easily realized. If the length of the joint portion (40) is increased to, for example, a length substantially equal to the total length of each divided case, the force transmission surface between the first fitting portion (30) and the second fitting portion (40) is increased. It becomes possible to increase the area, and it is possible to increase the fitting rigidity with respect to the force in the tension direction.

  In the first aspect of the present invention, the first fitting portion (30) and the second fitting portion (40) are in contact with each other in order to support the force in the tensile direction. It is preferable to have two support planes (43), respectively.

  In the first aspect of the present invention, the first fitting portion (30) and the second fitting portion (40) are engaged with each other so as to support the force in the tensile direction. Each may have two serrated portions (42).

  In the first aspect of the present invention, the first fitting part (30) has a groove part (31) extending in the direction of the slide, and the second fitting part (40) is in relation to the groove part (31). It is preferable to have a tenon (41) formed to slide and fit.

  In the first aspect of the present invention, the linear expansion coefficient of the material of the second fitting portion (40) can be made larger than the linear expansion coefficient of the material of the first fitting portion (30). Thereby, the simple assembly of the 1st division | segmentation case (21) and 2nd division | segmentation case (22) in a low-temperature environment can be made compatible with the tight fitting in a normal temperature range.

  In the first aspect of the present invention, the first split case (21) further includes a first convex portion (27) protruding in the slide direction or a first concave portion recessed in the slide direction, It is preferable that the divided case (22) further includes a second concave portion (28) fitted into the first convex portion (27) or a second convex portion fitted into the first concave portion. According to this, the supporting force with respect to the tensile direction is further increased, and the airtightness is further increased.

  In the first aspect of the present invention, it is preferable that two coupling means (24) are arranged in parallel.

  The second aspect of the present invention includes a first divided case (121) that forms a first space (121a), a second divided case (122) that forms a second space (122a), and a first space (121a). ) And the second space (122a), and an air-conditioning case (120) comprising coupling means (124) for joining the first divided case (121) and the second divided case (122) by bringing them close to each other. The coupling means (124) is formed in the first fitting part (130) formed in the first split case (121) and in the second split case (122), and the first fitting part (130) is provided with a second fitting portion (140) that fits in the approaching direction, and the first fitting portion (130) includes a first groove portion (133) and a first groove portion. (133) facing each other and at the bottom of the first groove (133) The first wall member (131) and the second wall member (132) are coupled to the first fitting portion (130), and the second fitting portion (140) is connected to the first groove portion (133) of the first fitting portion (130). ) And an insertion member (141) sandwiched between the first wall member (131) and the second wall member (132), a second groove (142) for receiving the second wall member (132), A third wall member (143) extending from the insertion member (141) so as to form a second groove (142) between the insertion member (141) and the first wall member (131). ) And the insertion member (141) are formed so as to support a tensile force acting in the opposite direction of the approaching direction, and the first sawtooth portion (134) and the second sawtooth portion (144) are engaged with each other. The third wall member (143) has a first sawtooth portion (134) and a second saw. Providing an air conditioning case (120), wherein the acting force on the second wall member (132) so as Jo portion meshing of (144) deeper.

  According to this, while the airtight connection of the first divided case and the second divided case can be easily realized, the lengths of the first fitting part (130) and the second fitting part (140) are divided into each. If the length of the case is increased to a length substantially equal to the total length, for example, the area of the force transmission surface between the first fitting portion (130) and the second fitting portion (140) can be increased, and the tension can be increased. It is possible to increase the fitting rigidity with respect to the direction force. Further, the third wall member (143) exerts a force on the second wall member (132) so as to deepen the engagement between the first serrated portion (134) and the second serrated portion (144). Are less susceptible to manufacturing errors or changes over time in dimensions related to meshing, thus achieving stable meshing and stable coupling of the first split case (121) and the second split case (122). be able to.

  In the second aspect of the present invention, the insertion member (141) has a protrusion (145) on the side surface opposite to the second serrated portion (144), and the second wall member (132) is the insertion member. It is preferable to be formed so as to support the protruding portion (145) of (141). Thereby, the further stable coupling | bonding of the 1st division | segmentation case (121) and the 2nd division | segmentation case (122) can be achieved.

  In the second aspect of the present invention, the first fitting portion (130) and the second fitting portion (140) are formed of a plastic material, and the second wall member (132) exerts a force based on its elastic deformation. In addition to the insertion member (141), the third wall member (143) preferably applies a force based on its elastic deformation to the second wall member (132).

It is a typical front view of the indoor air conditioning unit of the vehicle air conditioner including the air conditioning case of the first embodiment of the present invention. It is an expanded partial sectional view by the AA cutting line of FIG. 1, Comprising: It is sectional drawing which shows the coupling | bonding means of the air-conditioning case of 1st Embodiment. It is sectional drawing which drew only the 1st division | segmentation case side of the coupling | bonding means of the air-conditioning case of 1st Embodiment. It is a typical fragmentary perspective view which shows the state before fitting of the coupling means of the air-conditioning case of 1st Embodiment. It is a typical fragmentary sectional view which shows the wall part in which the coupling | bonding means is not provided of the air conditioning case of 1st Embodiment. It is an expanded partial sectional view which shows the coupling means of the air-conditioning case of 2nd Embodiment. It is sectional drawing which drawn only the 1st division | segmentation case side of the coupling | bonding means of the air-conditioning case of 2nd Embodiment. It is a typical fragmentary perspective view of the 1st division | segmentation case of the air-conditioning case of 2nd Embodiment.

  An air conditioning case according to a first embodiment of the present invention will be described below with reference to FIGS. 1 to 5 showing an embodiment in which the air conditioning case is applied to an indoor air conditioning unit of a vehicle air conditioner.

  FIG. 1 is a schematic front view of an indoor air conditioning unit 10 of a vehicle air conditioner including an air conditioning case 20 according to a first embodiment of the present invention, as viewed from the line of sight toward the rear side of the vehicle. In FIG. 1, the X and Z directions are shown for ease of explanation, and although not shown in FIG. 1, the Y direction is defined as a direction perpendicular to the paper surface. These X, Y, and Z directions in the figure correspond to the left, right, front, back, and top and bottom directions in the vehicle mounted state. The indoor air-conditioning unit 10 is fixed to a vehicle body side member (not shown) with bolts or the like using six attachment portions 11 protruding in a tab shape inside the vehicle instrument panel (not shown) at the foremost part of the vehicle interior. .

  The indoor air conditioning unit 10 in FIG. 1 includes a blower unit 12 and an air conditioning main unit 13. The air conditioning body unit 13 is disposed at the approximate center in the vehicle left-right X direction, and the blower unit 12 is disposed away from the air conditioning body unit 13 by a predetermined dimension on the passenger seat side.

  The blower unit 12 has an inside / outside air switching box 12a for switching and introducing the inside / outside air at the upper part thereof, and a blower (not shown) comprising a centrifugal blower fan in the blower housing part 12b below the inside / outside air switching box 12a. ) Is arranged.

  The inside / outside air switching box 12a introduces switching between inside air and outside air as is well known, and a blower outlet (not shown) of a centrifugal blower fan inside the blower housing portion 12b is connected to the air conditioning main unit 13 side. ing.

  The air conditioning case 20 of the blower unit 12 includes a first divided case 21 as an inside / outside air switching box 12a located on the upper side in the vehicle vertical direction, a second divided case 22 located in the center, and a third divided position located on the lower side. The three divided cases are formed from a plastic material.

  The first divided case 21 has a first space 21a formed therein, and an upper portion of the first space 21a is opened as an air introduction opening, and a lower portion of the first divided case 21 is also opened but is not shown. It communicates with a second space 22a formed inside the case 22. The second space 22 a inside the second divided case 22 communicates with a third space formed in the third divided case 23. The first divided case 21 and the second divided case 22, and the second divided case 22 and the third divided case 23 are integrally coupled by the coupling means 24, respectively.

  On the other hand, the case of the air conditioning main unit 13 includes a right case 14 located on the right side in the vehicle left-right direction, a left case 15 located on the left side, and a lower case 16 located below these left and right cases. Yes. In the example of FIG. 1, the right case 14 and the left case 15 are connected to a connecting means 17 according to a conventional technique using a hooking structure of a rectangular frame-shaped part and a locking claw part and a screw according to the prior art disclosed in Patent Document 1. Then, the case is combined with the lower case 16 by the same connecting means 24 as the air conditioning case 20 of the first embodiment to form the case of the air conditioning main unit 13.

  In this example, the lower case 16 is an integrally molded product with the third divided case 23 of the air conditioning case 20 of the blower unit 12. Further, the left case 15 and the right case 14 are also formed of the same plastic material as each case of the air conditioning case 20 of the blower unit 12 described above.

  The lower case 16 is provided with an air inlet (not shown) for receiving an air flow sent from the blower unit 12 side, and an air passage (not shown) formed in the case of the air conditioning main unit 13. A cooling evaporator (not shown) is provided upstream of the air passage, and a heater core (not shown) is provided downstream of the air passage.

  The air sent from the blower unit 12 side is cooled or heated by a cooling evaporator (not shown) and / or a heating heater core (not shown) in the air conditioning unit 13, and an outlet switching mechanism (not shown). )) And blow out into the passenger compartment.

  Next, about the air-conditioning case 20 of the air blower unit 12 by 1st Embodiment of this invention, except the 2nd division | segmentation case 22 from FIG.2 and FIG.2 which is an expanded partial sectional view by the AA cutting | disconnection line of FIG. This will be described below with reference to FIG. 3 illustrating only the first divided case 21.

  The air conditioning case 20 of the first embodiment includes a first divided case 21 and a second divided case 22 formed from a plastic material and having a substantially rectangular plane shape, a third divided case 23, and four pieces that combine them. Coupling means 24. Of the four coupling means 24 of the air conditioning case 20, only two are shown in FIG. FIG. 2 shows the left one of the two left and right coupling means 24 for coupling the first divided case 21 and the second divided case 22 of the air conditioning case 20. The right coupling means 24 (not shown) is the same as the left one, and is arranged symmetrically with respect to a central axis (not shown) extending in the Z direction of each divided case. In addition, since the second divided case 22 and the third divided case 23 are coupled in the same manner, in this specification, the coupling portion 24 is exemplified by a coupling portion between the first divided case 21 and the second divided case 22. Will be described.

  The coupling means 24 of the air conditioning case 20 of the first embodiment includes a first fitting portion 30 formed integrally with a lower end portion of the wall portion 25 of the first split case 21 and a wall portion 26 of the second split case 22. A second fitting portion 40 that is formed integrally with the upper end portion and is slid and fitted to the first fitting portion 30 in the X direction is provided. FIG. 4 is a schematic partial perspective view of the air conditioning case 20 showing a state before the first fitting portion 30 and the second fitting portion 40 are fitted, and the right side not shown in FIGS. 1 and 2. It is a typical fragmentary perspective view which partially cuts out and shows the connection means 24 of this. As shown in FIG. 4, the first fitting portion 30 and the second fitting portion 40 are aligned, and the first fitting portion 30 is parallel to the X direction with respect to the second fitting portion 40. When it is slid in the direction of arrow B, it is fitted. Further, when they are fitted, they are formed so as to be able to support a force in the Z direction that is substantially perpendicular to the direction of the slide and in the tensile direction against the combined first divided case 21 and second divided case 22. ing.

  When viewed in the cross section of FIG. 3, the first fitting portion 30 has a substantially rectangular outline protruding leftward from the wall portion 25 of the first divided case 21, more specifically, the upper left corner is chamfered at about 45 degrees. It has a substantially rectangular outer contour, and has a groove portion 31 extending through it in the X direction. Moreover, the 1st fitting part 30 has the length substantially equal to the length of the X direction of the 1st division | segmentation case 21 in this embodiment.

  When viewed in the cross-section of FIG. 3, the groove portion 31 includes a rectangular opening portion 32 having a narrow width on the lower right side and a polygonal portion 33 having a wide width on the upper side, and the polygonal portion 33. Is formed of an upper trapezoidal portion and a lower rectangular portion.

The right vertical member 34 of the first fitting portion 30, which is the right side of the rectangular portion of the groove portion 31 in the drawing, that is, the downward extending portion of the wall portion 25 of the first divided case 21, has a first vertical extension. A serrated portion 35 is formed, and the first serrated portion 35 has three saw teeth each composed of an upward horizontal surface and an obliquely inclined surface. The first fitting portion 30 has a horizontal member 36 that extends horizontally on the left side of the opening 32 of the groove 31.
It should be noted that the terms “right” and “left” in the description relating to the left first fitting portion 30 illustrated and described are the symmetrically arranged right first fitting portions 30 that are not shown. The cases are reversed to “left” and “right”, respectively. This also applies to the second fitting portion 40 described below.

  On the other hand, the 2nd fitting part 40 formed in the upper end part of the wall part 26 of the 2nd division | segmentation case 22 is a shape which can be fitted in the groove part 31 of the 1st fitting part 30, as FIG. 2 shows. The tenon portion 41 having a cross-sectional shape complementary to the cross-sectional shape of the groove portion 31 is formed. Therefore, the tenon portion 41 of the second fitting portion 40 is formed in the first fitting portion 30. A second sawtooth portion 42 made of three saw teeth that mesh with the sawtooth portion 35 is also provided. Each saw blade of the second sawtooth portion 42 has a downward horizontal surface and an obliquely upward inclined surface.

The tenon portion 41 of the second fitting portion 40 has a lower surface 43 of the tenon portion 41 that contacts the inner surface 37 of the horizontal member 36 of the first fitting portion 30. Here, the inner surface 37 of the horizontal member 36 and the lower surface 43 of the tenon portion 41 can provide support for the force that pulls and pulls the combined first divided case 21 and second divided case 22 in the Z direction. In the specification, they are referred to as a first support plane 37 and a second support plane 43, respectively.
Further, the tenon portion 41 is coupled to the upper end portion of the wall portion 26 of the second divided case 22 at the lower right portion thereof, and therefore the wall portion 26 of the second divided case 22 is a groove portion of the first fitting portion 30. 31 through the opening 32.

  Since the 1st fitting part 30 and the 2nd fitting part 40 are formed as mentioned above, the 1st division case 21 and the 2nd division case 22 are combined by sliding them together and making them fit. Thus, the first space 21a and the second space 22a are connected with good airtightness. In addition, when a force in the pulling direction that separates the first divided case 21 and the second divided case 22 that are joined, and a force in the pulling direction that is substantially orthogonal to the direction of the slide, is applied, the first divided case 21 has a relatively large area. The force in the tension direction is supported by the first support plane 37 and the second support plane 43, and the connection between the first divided case 21 and the second divided case 22 is maintained. Furthermore, in the present embodiment, the force in the tension direction is also supported by the first sawtooth portion 35 and the second sawtooth portion 42 that mesh with each other.

  In the present embodiment, the fitting dimension of the cross section of the groove portion 31 of the first fitting portion 30 and the tenon portion 41 of the second fitting portion 40 is the slide of the first fitting portion 30 and the second fitting portion 40. The dimension is set so that a suitable frictional force against the relative movement of the direction can be obtained. However, in the present invention, a tolerance equivalent to a clearance fit or an intermediate fit is set in the fitting dimensions of the cross section of the groove portion 31 of the first fitting portion 30 and the tenon portion 41 of the second fitting portion 40. Is also possible. In that case, in order to prevent relative movement in the sliding direction of the first fitting portion 30 and the second fitting portion 40 after fitting, a stopper protruding from a member on the vehicle body side, etc. The movement preventing means (not shown) may be used.

Furthermore, the material of the second fitting portion 40 of the second divided case 22 can be easily assembled while the first divided case 21 and the second divided case 22 can be assembled easily. An embodiment in which the linear expansion coefficient is larger than the linear expansion coefficient of the material of the first fitting portion 30 of the first divided case 21 is also possible. In this embodiment, the fitting between the first fitting part 30 and the second fitting part 40 is maintained tightly in the normal temperature range, but the first fitting part 30 and the second fitting part are at a low temperature such as −30 ° C., for example. The fitting with the fitting portion 40 can be performed with a clearance fit. As a specific material combination for realizing the air conditioning case 20 of such an embodiment, for example, a polypropylene material having a linear expansion coefficient of 8.5 × 10 ⁻⁵ ° C. ⁻¹ for the first fitting portion 30 and a second material are used. A combination using a nylon material having a linear expansion coefficient of 13 × 10 ⁻⁵ ° C. ⁻¹ for the fitting portion 40 is possible.

  Next, about the structure of the wall part of the air conditioning case 20 of the first embodiment shown in FIGS. 1 to 4 where the coupling means 24 is not provided, a schematic diagram of the air conditioning case 20 with cut surfaces extending in the X direction and the Z direction. This will be described with reference to FIG.

  A semicircular shape projecting in the direction of sliding toward the fitting of the first fitting portion 30 at the ends of the left and right wall portions 25 of FIG. The first convex part 27 having the tip contour is formed, and the second concave part 28 formed so as to be fitted to the first convex part 27 is formed on the corresponding wall part 26 of the second divided case 22. ing. In the present embodiment, the first convex portion 27 and the second concave portion 28 extend with a length substantially equal to the width of each divided case in the Y direction. Further, the height of each wall portion 25, 26 of the first and second divided cases on the left side of FIG. The height is set higher than 26.

  Thus, providing the 1st convex part 27 and the 2nd recessed part 28 which concavo-convexly fit in each wall part 25 and 26 in which the connection means 24 of the 1st division | segmentation case 21 and the 2nd division | segmentation case 22 is not provided. As a result, an additional support for the tension force described above is provided, and the airtightness of the air conditioning case 20 is enhanced.

  In the embodiment shown in FIG. 5, the first projecting portion 27 is formed in the first divided case 21 and the second recessed portion 28 is formed in the second divided case 22. An embodiment (not shown) in which a first concave portion is formed in the first divided case 21 and a second convex portion is formed in the second divided case 22 is also possible (not shown).

  The cross-sectional shapes of the groove portion 31 and the tenon portion 41 of the coupling means 24 of the air conditioning case 20 of the first embodiment are not limited to the shapes shown in FIG. Any shape may be used as long as it can support force, that is, can maintain the connection between the first divided case 21 and the second divided case 22. Alternatively, the first sawtooth portion 35 and the second sawtooth portion 42 may be omitted, or the first support plane 37 and the second support may be provided although the first sawtooth portion 35 and the second sawtooth portion 42 are provided. The shape without the flat surface 43 may be sufficient.

  The saw blades of the first sawtooth portion 35 and the second sawtooth portion 42 have a horizontal plane and are suitable for supporting the force in the tension direction. However, in the first embodiment, the sawtooth does not necessarily need to be a saw blade. It will be understood that the pulling force can be supported even if the tooth shape is replaced by, for example, an isosceles triangle.

  In the above-described embodiment, the coupling means 24 has a total length substantially equal to the total length in the X direction of each divided case, but the coupling means 24 partially extends with respect to the total length in the X direction of each divided case. Embodiments are possible. Further, it is possible to provide a plurality of coupling means 24 at intervals in the X direction.

  In the above-described embodiment, the first fitting portion 30 and the second fitting portion 40 of the coupling means 24 are formed integrally with each divided case. 2 fitting part 40 formed separately from each division case may be joined to each division case by joining methods, such as welding, adhesion, or screwing.

  Next, an air conditioning case 20 according to a second embodiment of the present invention will be described below with reference to FIGS. In this specification, the case where the air-conditioning case 20 by 2nd Embodiment is applied to the air blower unit 12 of the indoor air-conditioning unit 10 of the vehicle air conditioner shown by FIG. 1 similar to the case of 1st Embodiment is taken as an example. explain.

The air conditioning case 120 of the second embodiment, like the air conditioning case 20 of the first embodiment, is formed of a plastic material and has a first rectangular case 121 and a second divided case 122 having a substantially rectangular planar shape, A three-divided case (not shown) and four coupling means 124 for coupling them are provided. However, as shown in the enlarged partial sectional view of FIG. 6, the structure of the coupling means 124 of the air conditioning case 120 of the second embodiment is different from that of the first embodiment. Here, FIG. 6 is an enlarged partial cross-sectional view of the air conditioning case 120 of the second embodiment viewed in the same cutting direction as the cutting direction along the AA cutting line of FIG. The left one of the two left and right coupling means 124 for coupling the first divided case 121 and the second divided case 122 is shown. The right coupling means 124 (not shown) is the same as the left one, and is arranged symmetrically with respect to a central axis (not shown) extending in the Z direction of each divided case. FIG. 7 is a diagram illustrating only the first divided case 121 excluding the second divided case 122 from FIG. 6, and FIG. 8 is a schematic partial perspective view of the first divided case 121.
In addition, since the second divided case 122 and the third divided case are coupled in the same manner, in this specification, the coupling unit 124 is structured by using the coupling portion of the first divided case 121 and the second divided case 122 as an example. explain.

  The air conditioning case 120 of the second embodiment is not shown in order to improve the airtightness of the air conditioning case 120, but each wall of the first divided case 121 and the second divided case 122 on two sides where the coupling means 124 is not arranged. Convex portions and concave portions that are concave and convex fitted in the vertical direction are provided at the ends of the portions 125 and 126.

  The coupling means 124 of the air conditioning case 120 of the second embodiment has the first split case 121 and the first split case 121 in a state where the first space 121a of the first split case 121 and the second space 122a of the second split case 122 face each other. A first fitting part 130 formed so as to be coupled to each other by bringing the two split cases 122 close to each other, and formed integrally with the lower end of the wall part 125 of the first split case 121, and a second A second fitting portion 140 that is integrally formed with the upper end portion of the wall portion 126 of the divided case 122 and moves and fits in the vertical Z direction with respect to the first fitting portion 130 is provided.

When the first fitting part 130 is viewed in the cross section of FIG. 7, the first groove part 133 opened at the bottom, the first wall member 131 on the right side and the second wall on the left side facing each other across the first groove part 133. The first wall member 131 and the second wall member 132 are coupled to the wall portion 125 of the first divided case 121 at the bottom portion or the tip portion of the first groove portion 133. The first wall member 131 extends inwardly from the wall portion 125 of the first split case 121, and the second wall member 132 extends outwardly from the wall portion 125 of the first split case 121. Yes.
Moreover, in this embodiment, the 1st fitting part 130 and the 2nd fitting part 140 have the equal length of a X direction, The length is about 80 of the full length of the X direction of the 1st division | segmentation case 121. %.

  A first serrated portion 134 is formed on the inner surface of the first wall member 131, and the first serrated portion 134 includes six saw teeth each composed of an upward horizontal surface and an obliquely inclined surface. .

  When viewed in the cross section of FIG. 7, the second wall member 132 has a distal end portion 132 a extending vertically upward from the distal end surface, a proximal end portion 132 b extending obliquely downward to the left from the proximal end side, and an upper end of the distal end portion 132 a. It is formed from an intermediate portion 132c that extends obliquely to the left and is connected to the base end portion 132b. Since the 2nd wall member 132 is formed in this way, the 1st groove part 133 has the enlarged part 133a which swelled in the triangle shape to the left. For this reason, the width | variety of the inlet_port | entrance of the 1st groove part 133 is narrower than the width | variety of the said triangular-shaped expansion part 133a.

  As shown in FIG. 6, the second fitting portion 140 is an insertion member 141 formed at the upper end portion as an extension portion of the wall portion 126 of the second divided case 122, and includes the first fitting portion 130. An insertion member 141 formed so as to be inserted and fitted from the inlet of the first groove portion 133, a second groove portion 142 that receives the second wall member 132 of the first fitting portion 130, and the second groove portion 142. And a third wall member 143 extending from the base end portion of the insertion member 141 so as to be formed between the insertion member 141 and the insertion member 141.

  A second serrated portion 144 is formed on the right side surface of the insertion member 141, and the second serrated portion 144 has a sawtooth that can mesh with the first serrated portion 134 of the first wall member 131. There are six. Further, near the distal end portion of the insertion member 141, there is a protrusion 145 protruding in a triangular shape on the outside (left side), and the width of the insertion member 141 in the portion where the protrusion 145 is formed is The width of the entrance of the first groove part 133 of the 1 fitting part 130 is larger.

  The third wall member 143 includes a base end portion 143a that branches from the insertion member 141 horizontally to the left, an intermediate portion 143b that extends obliquely to the upper left from the base end portion 143a, and an inclination that further increases from the intermediate portion 143b to the upper left. The distal end portion 143c is located below the distal end of the insertion member 141. In this embodiment, the distal end portion 143c is located about 60% of the entire length of the insertion member 141. The width of the second groove 142 formed by the insertion member 141 and the third wall member 143 is larger than the thickness of the second wall member 132 at the inlet, but gradually narrows in a tapered shape, and the third wall The thickness of the second wall member 132 is smaller in the intermediate portion 143 b of the member 143. The width of the second groove 142 is such that when the first fitting part 130 and the second fitting part 140 are completely fitted, the third wall member 143 in contact with the distal end part 132a of the second wall member 132 is shown in the figure. The dimension is set so that the second wall member 132 is pressed slightly toward the insertion member 141 while being elastically slightly bent to the left.

  Since the 1st fitting part 130 and the 2nd fitting part 140 are formed in this way, the 1st division case 121 and the 2nd division case 122 are combined by fitting them together, and the 1st division case 121 and the 2nd division case 122 are combined. The space 121a and the second space 122a are connected with good airtightness. Further, when a force in a pulling direction that separates the combined first divided case 121 and the second divided case 122 is applied, the force in the pulling direction is caused by the engagement between the first sawtooth portion 134 and the second sawtooth portion 144. Is supported, and the connection between the first divided case 121 and the second divided case 122 is maintained.

  In the present embodiment, when the first fitting portion 130 and the second fitting portion 140 are completely fitted, the second wall member 132 is in contact with the insertion member 141 and presses the first wall member Since it is formed so as to be clamped with 131, it is possible to counter a force that disengages the serrated portion. Further, since the third wall member 143 presses the second wall member 132 to the right in the drawing, that is, in the direction of deepening the engagement, the engagement of the sawtooth portion can be reliably maintained. Further, even when the third wall member 143 is deformed so that the second wall member 132 rotates outward (clockwise in FIG. 6), the third wall member 143 does not deform in such a direction as to deepen the engagement of the serrated portion. Acts to correct.

  Moreover, since the insertion member 141 has a triangular protrusion 145 that protrudes to the outside (left side) of the second divided case 122 near the tip thereof, the insertion member 141 is in a direction in which the sawtooth portion is disengaged. Is moved sideways, the tensile force can be countered by the frictional force between the protrusion 145 and the inner surface of the intermediate portion 132c of the second wall member 132 supporting the protrusion 145.

  In the above-described embodiment, the width of the second groove 142 is such that the third fitting portion 130 and the second fitting portion 140 are in contact with the distal end portion 132a of the second wall member 132 when the first fitting portion 130 and the second fitting portion 140 are completely fitted. Although the wall member 143 is elastically slightly bent to the left in the drawing and is sized so as to press the second wall member 132 toward the insertion member 141, the width of the second groove portion 142 is When the fitting portion 130 and the second fitting portion 140 are completely fitted, the width may be such that only a slight gap is formed between the distal end portion 132a of the second wall member 132 and the third wall member 143. In this case, when the second wall member 132 is deformed so as to rotate outward (clockwise in FIG. 6), the third wall member 143 is deformed in such a direction as to deepen the engagement of the serrated portion. Acts to correct.

  Although the number of saw teeth of the first sawtooth portion 134 and the second sawtooth portion 144 of the second embodiment is a plurality of six, the number of saw teeth may be any integer greater than or equal to one. This is not limited to 3 for the number of saw teeth of the first sawtooth portion 35 and the second sawtooth portion 42 in the first embodiment, and may be any integer of 1 or more.

  In the air conditioning case 120 of the second embodiment, when the first divided case 121 and the second divided case 122 have a substantially rectangular planar shape, the coupling means 124 may be provided on all four sides of the rectangle.

DESCRIPTION OF SYMBOLS 20 Air-conditioning case 21 1st division | segmentation case 21a 1st space 22 2nd division | segmentation case 22a 2nd space 24 Connection means 30 1st fitting part 31 Groove part 35 1st serrated part 37 1st support plane 40 2nd fitting part 41 Tenon

Claims (10)

A first split case (21) forming a first space (21a);
A second split case (22) forming a second space (22a);
In order to connect the first space (21a) and the second space (22a), a coupling means (24) for slidably coupling the first divided case (21) and the second divided case (22) to each other. An air conditioning case (20) comprising:
The coupling means (24) slides with respect to the first fitting portion (30) and a first fitting portion (30) formed in the first split case (21) and extending in the sliding direction. A second fitting part (40) formed in the second divided case (22) so as to be fitted,
When the first fitting portion (30) and the second fitting portion (40) are fitted to each other, the force is substantially perpendicular to the direction of the slide, and the combined first divided case (21 ) And the air-conditioning case (20), which can support a force in a tensile direction against the second divided case (22).   The first fitting portion (30) and the second fitting portion (40) have a first support plane (37) and a second support plane (43) that come into contact with each other to support the force in the tensile direction. Air conditioning case (20) according to claim 1, characterized in that each has an air conditioning case (20).   A first serrated portion (35) and a second sawtooth portion (42) in which the first fitting portion (30) and the second fitting portion (40) mesh with each other so as to support the force in the tensile direction. The air conditioning case (20) according to claim 1 or 2, characterized by comprising   The first fitting part (30) has a groove part (31) extending in the sliding direction, and the second fitting part (40) slides and fits into the groove part (31). The air conditioning case (20) according to any one of claims 1 to 3, characterized in that it has a tenon (41) formed as described above.   The air conditioning according to claim 4, wherein a linear expansion coefficient of a material of the second fitting part (40) is larger than a linear expansion coefficient of a material of the first fitting part (30). Case (20). The first split case (21) further has a first protrusion (27) protruding in the direction of the slide, or a first recess recessed in the direction of the slide,
The second split case (22) further includes a second concave portion (28) fitted into the first convex portion (27) or a second convex portion fitted into the first concave portion. The air conditioning case (20) according to any one of claims 1 to 5.   The air conditioning case (20) according to any one of claims 1 to 6, characterized in that two of the coupling means (24) are arranged in parallel. A first split case (121) forming a first space (121a);
A second split case (122) forming a second space (122a);
A coupling means (124) for coupling the first divided case (121) and the second divided case (122) by bringing the first divided case (121) and the second divided case (122) close to each other with the first space (121a) and the second space (122a) facing each other. An air conditioning case (120) comprising:
The coupling means (124) is formed on the first fitting part (130) formed on the first split case (121) and on the second split case (122). 130), and a second fitting part (140) fitted in the approaching direction,
The first fitting part (130) is opposed to the first groove part (133) across the first groove part (133) and is integrally coupled at the bottom part of the first groove part (133). A wall member (131) and a second wall member (132);
The second fitting part (140) is inserted into the first groove part (133) of the first fitting part (130), and the first wall member (131) and the second wall member (132). The insertion member (141) sandwiched between the second wall member (132), the second groove portion (142) that receives the second wall member (132), and the second groove portion (142) are formed between the insertion member (141). A third wall member (143) extending from the insertion member (141) and extending,
The first wall member (131) and the insertion member (141) are formed so as to support a tensile force acting in the direction opposite to the approach direction, and the first sawtooth portion (134) and the second meshing portion are engaged with each other. Each having a serrated portion (144);
The third wall member (143) exerts a force on the second wall member (132) so as to deepen the engagement between the first sawtooth portion (134) and the second sawtooth portion (144). An air conditioning case (120) characterized by: The insertion member (141) has a protrusion (145) on the side surface opposite to the second serrated portion (144),
The air conditioning case (120) according to claim 8, wherein the second wall member (132) is formed to support the protruding portion (145) of the insertion member (141). The first fitting part (130) and the second fitting part (140) are made of a plastic material,
The second wall member (132) applies a force based on its elastic deformation to the insertion member (141);
The air conditioning case (120) according to claim 8 or 9, wherein the third wall member (143) applies a force based on its elastic deformation to the second wall member (132).

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