JP2007137464A - Packing device for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce impact load applied on components in an indoor unit in the event that a pack containing the indoor unit falls, and to prevent packs stacked for a long time from falling over. <P>SOLUTION: A packing device for an air conditioner, which has a pair of cushioning materials 4 and 5 fitted to the ends of the indoor unit 1 of the air conditioner and having recesses 2 fitted on the corresponding ends, and corrugated board 6 for covering the cushioning materials and the indoor unit. In the packing device, in the direction in which both ends of the indoor unit are connected, the thickness of the cushioning material 5 fitted to the end of indoor unit, which end is near the gravity center 16 of the indoor unit, is greater than that of the cushioning material 4 fitted to the other end of the indoor unit. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air conditioner, and more particularly to a packaging device for the indoor unit.

  A conventional air conditioner indoor unit packaging apparatus is shown in FIG. FIG. 11A is a perspective view showing a state in which the cushioning material attached to the side end portion of the air conditioner and the corrugated cardboard which is the exterior material are separated, and FIG. 11B is the cushioning material and the air conditioner. It is a perspective view which shows the state which was packaged with corrugated cardboard.

As shown in FIG. 11A, the air conditioner is packed in such a manner that the back side of the indoor unit 1 is faced down and cushioning materials 4 and 5 are attached to both side ends of the indoor unit 1.
A concave portion 2 is formed on one side of each cushioning material 4, 5 and is fitted to a side end of the air conditioner 1, and a grip portion 3 is formed on the other side.

  After the cushioning materials 4 and 5 are mounted on the side ends of the air conditioner, a sleeve-like cardboard 6 is mounted as shown in FIG. Thus, the cardboard 6 and the cushioning materials 4 and 5 are prevented from coming off.

  The cushioning materials 4 and 5 are made of foamed synthetic resin such as polystyrene foam, and in order to increase the strength thereof, the outer corner portions 4a and 5a that do not significantly affect the cushioning action of the cushioning materials 4 and 5 have a lower end (black in FIG. 11). The coated part) is cured by heat treatment. (For example, refer to Patent Document 1).

  By adopting such a configuration, the cushioning material is strengthened without losing the impact cushioning effect, the cushioning material is less damaged, its reuse is facilitated, and it helps to prevent pollution and the band 7 Problems such as loosening are reduced, and there is an advantage that the packaging work can be easily performed regardless of the rigidity of the cardboard 6 for exterior use.

JP 2003-26245 A

  As described above, since the cushioning material in the conventional packing device has a part of the foam material cured by heat treatment, the manufacturing cost of the cushioning material increases, and the cushioning material exhibits a spring action when the air conditioner falls. Although the impact load generated in the internal indoor unit is reduced, the spring becomes hard when a part of the interior unit is cured, so that it is difficult to obtain the effect of reducing the impact load.

  In addition, since only a part of the cushioning material is cured, when a plurality of packed indoor units are stacked in the height direction, the load is supported only by the cured part, so that the load tends to collapse. is there.

  The present invention has been made to solve the above-described problems, and has an air conditioning that can be made to be less likely to collapse even when the packaging body is piled up with the same manufacturing cost as that of the prior art, with an increased spring action. An object is to provide a packaging device for a machine.

  The air conditioner packaging apparatus according to the present invention includes a pair of shock-absorbing materials that are respectively attached to the side end portions of the indoor unit of the air conditioner and that have recesses that are fitted into the side end portions, and the respective shock-absorbing materials. In an air conditioner packaging apparatus including a cardboard for packaging the indoor unit, a thickness of a cushioning material attached to a side end near the center of gravity of the indoor unit in a direction connecting both side ends of the indoor unit The height dimension is larger than the thickness dimension in the corresponding direction of the cushioning material attached to the other side end of the indoor unit.

  The air conditioner packaging apparatus according to the present invention is configured as described above, and since the thickness of the cushioning material near the center of gravity is increased, the spring constant of the cushioning material is reduced, and the packed indoor unit is Even when it falls, the impact load applied to the indoor unit inside can be reduced. In addition, when falling from the buffer material side far from the center of gravity, the spring constant of the indoor unit itself and the spring constant of the buffer material are in series, so the impact load received by the components inside the indoor unit is reduced. .

  Also, if the thickness of the cushioning material is distributed according to the position of the center of gravity, the stress generated on the cushioning material struts becomes constant when stacking multiple packages. The material struts shrink due to a creep phenomenon, but the same stress is generated in each cushioning material at both end portions of the indoor unit, so that the shrinkage rate is the same and the stacking is less likely to collapse.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a general packing device of an air conditioner. The indoor unit 1 of the air conditioner is fitted into the recesses 2 of the cushioning materials 4 and 5 formed of foamed polystyrene or the like on both sides, and the periphery thereof is covered with the corrugated cardboard 6 and the end of the corrugated cardboard is stapled. Or it is fixed with an adhesive.

FIG. 2 is a perspective view showing a packaging body in which the packaging apparatus of FIG. 1 is assembled. In order to prevent the shock-absorbing materials 4 and 5 and the indoor unit 1 from falling, the outer periphery is generally stopped with a band 7 such as a strap. is there.
3 is a cross-sectional view showing the configuration of the packaging device according to Embodiment 1, and is a view of cross section 8 in FIG. 2 as viewed from above.

  The interior of the indoor unit 1 of the air conditioner includes a heat exchanger 10, a fan motor 11, a fan 12, and an electronic board 13. The weight of the fan motor 11 is large among the indoor units 1, and the center of gravity position 16 of the indoor unit 1 of the air conditioner is offset toward the fan motor 11 side. Furthermore, there are many parts such as the electronic board 13 that are susceptible to vibration on the fan motor 11 side. Furthermore, on the fan motor 11 side, there is a corner part 17 as shown in FIG. 4 for maintenance of piping and electric wiring, and there are many parts with weak strength.

  Note that the thickness C of the cushioning material 4 on the side far from the center of gravity position 16 is about 0.02 to 0.1 as compared with the rigidity of the air conditioner, and the average is 0.05. FIG. 5 shows the ratio of the thickness D of the cushioning material 5 on the side closer to the center of gravity position 16 to / (A + B) as the ratio to the thickness C of the cushioning material on the far side.

  From this figure, if the thickness of the buffer material 5 is 1.3 times the thickness of the buffer material 4 at a position where the center of gravity position 16 of the air conditioner 1 is 15% closer to one side (0.35 in the figure), the air conditioner 1 It can be seen that the impact force at the time of dropping from one side end portion or from the other side end portion can be made uniform.

  Since the rigidity of the buffer materials 4 and 5 has a variation of about 0.02 to 0.1, ± 20% of the thickness is within the design range. However, in the case of an air conditioner, since the center of gravity position 16 generally does not deviate by 15% or more, in the first embodiment, the thickness ratio of the buffer material 5 to the buffer material 4 is about 1.1 to 1.5 times or less. .

  FIG. 6 shows a state when the package 9 is dropped. FIG. 6A shows a case where it falls from the shock absorbing material 5 side on the side close to the center of gravity, and FIG. 6B shows a case where it falls from the shock absorbing material 4 side far from the center of gravity. When falling from either side, the load of the center of gravity is determined by the spring element from the side end of the indoor unit 1 of the air conditioner to the center of gravity.

  When the spring element is hard (when the spring constant is large), the impact load on the center of gravity is large. Conversely, when the spring element is soft (when the spring constant is small), the impact load on the center of gravity is small. Since the impact load on the center of gravity is the sum of the loads applied to the stop portions of the fan motor 11 and the heat exchanger 10, when the impact load on the center of gravity is large, the stop of the fan motor 11 and the heat exchanger 10 is stopped. In some cases, the stress applied to the portion is increased and scratches may be attached.

  When the center of gravity 18 is close to the cushioning material 5, the spring element 22 of the cushioning material 4 is compared to the spring element 22 of the cushioning material 5 and the spring element 21 from the indoor unit side end inside the cushioning material 5 to the center of gravity 18. The spring constant of the spring element 20 from the indoor unit side end to the center of gravity 18 inside the cushioning material 4 is small. This occurs because the distance between the side end portion and the fan motor 11 is different, and the rigidity of the resin component between them is different. In the conventional packing apparatus, since the buffer material 4 and the buffer material 5 have the same thickness, the impact maximum load applied to the center of gravity is different, and the shock load closer to the center of gravity is larger.

  FIG. 7 shows the relationship between the impact load and the time when the packing body attached with the cushioning material of the conventional packing device is dropped from a certain height. In the same figure, E shows the case where it falls from the shock absorbing material 5 side close | similar to a gravity center, and the same figure F shows the case where it falls from the shock absorbing material 4 side far from a gravity center. When the spring constant is small, the time for the spring to bend increases and the impact load applied to the center of gravity is reduced. Therefore, the maximum value of the impact load between E with a large spring constant between the center of gravity and the floor and F with a small spring constant is Unlikely, F is smaller.

  FIG. 8 shows a state at the time of dropping when the thicknesses of the buffer materials 4 and 5 according to Embodiment 1 are changed. The reference numerals correspond to those in FIG. Increasing the thickness of the cushioning material decreases the rigidity. FIG. 9 shows the relationship between the impact load and the time when the package according to Embodiment 1 is dropped. In the same figure, G shows the case where it falls from the buffer material 5 side near the gravity center, and the same figure H shows the case where it falls from the buffer material 4 side far from the gravity center.

  Since the thickness of the cushioning material 5 is inversely proportional to the shift amount of the center of gravity position, the impact load is almost the same as that when falling from the opposite cushioning material 4 side, and the maximum impact load can be reduced. Thereby, the impact load generated on the support of the fan motor 11, the electronic substrate 3, and the corner part 17 can be effectively reduced, and the thickness of the buffer material on the opposite side can be optimized, thereby reducing the cost.

Moreover, according to Embodiment 1, durability in the stacking at high temperature can also be raised. FIG. 10 shows the situation when the conventional packing apparatus and the first embodiment are stacked and stored for a long time.
In the case of the conventional packing apparatus, the weight of the upper part is received by the heat-cured corners or the foamed portions of the buffer materials 4 and 5. When stress is applied to the foamed material or resin at 20 degrees or more, creep occurs. When the compressive stress is large, the shrinkage due to creep becomes large. Therefore, when the center of gravity position 18 is shifted to the left and right, the shrinkage increases on the side where the compressive stress in the cushioning material is large, and as time passes, FIG. Start tilting as shown.

  According to the first embodiment, since the area of the cushioning material whose center of gravity is offset is large, there is an effect that the compressive stresses F1 and F2 are equalized on the left and right. As shown in 10 (a), the risk of falling is very low.

It is a perspective view which shows the general packing apparatus of an air conditioner. It is a perspective view which shows the package which assembled the packaging apparatus of FIG. It is sectional drawing which shows the structure of the packing apparatus by Embodiment 1 of this invention. It is a perspective view which shows the corner components in the indoor unit of an air conditioner. It is a figure which shows the relationship between the ratio of a gravity center position, and the thickness ratio of a buffer material. It is explanatory drawing which shows the model at the time of the fall of the conventional package. It is a figure which shows the relationship between the impact load at the time of the fall of the package of FIG. 6, and time. FIG. 5 is an explanatory diagram showing a model at the time of dropping of the packing body in the first embodiment. It is a figure which shows the relationship between the impact load at the time of the fall of the package in Embodiment 1, and time. It is explanatory drawing which shows the condition of the fall at the time of stacking and preserve | saving for a long term. It is a perspective view which shows the packing apparatus of the indoor unit of the conventional air conditioner.

Explanation of symbols

1 indoor unit, 2 recess, 4, 5 cushioning material, 6 cardboard, 7 strap,
8 cross section, 10 heat exchanger, 11 fan motor, 12 fan,
13 Electronic board, 16 Air conditioner center of gravity position, 17 Corner parts, 18 Center of gravity,
19 Spring element of cushioning material 4, 20, 21 Spring element between end of indoor unit and center of gravity,
22 Spring element of the cushioning material 5

Claims (3)

  A pair of shock-absorbing materials that are respectively attached to the side end portions of the indoor unit of the air conditioner and have recesses that are fitted into the side end portions, and corrugated cardboard that externally covers the buffer materials and the indoor unit. In the air conditioner packaging apparatus, the thickness dimension in the direction connecting both side ends of the indoor unit of the cushioning material attached to the side end near the center of gravity of the indoor unit is the other side end of the indoor unit. The air conditioner packaging apparatus is characterized in that it is larger than the thickness dimension in the corresponding direction of the cushioning material attached to the air conditioner.   A pair of shock-absorbing materials that are respectively attached to the side end portions of the indoor unit of the air conditioner and have recesses that are fitted into the side end portions, and corrugated cardboard that externally covers the buffer materials and the indoor unit. In the air conditioner packaging apparatus, the thickness dimension in the direction connecting the both end portions of the indoor unit of the cushioning material attached to the side end portion close to the fan motor position of the indoor unit is the other side end of the indoor unit. The air conditioner packaging apparatus is characterized in that it is larger than the thickness dimension in the corresponding direction of the cushioning material attached to the part.   The cushioning material attached to the other side end of the indoor unit is set to the thickness dimension in the direction connecting both side ends of the indoor unit of the cushioning material attached to the side end near the center of gravity or the fan motor position. The air conditioner packaging apparatus according to claim 1 or 2, wherein the thickness is 1.1 to 1.5 times the thickness dimension in the corresponding direction.

Images