A packaging structure for an electric water heater

Abstract

The present invention relates to the technical field of electric water heaters, and particularly to a packaging structure for an electric water heater, which includes a packaging pad. A receiving groove for receiving the end of the electric water heater is provided at the center of the first end face of the packaging pad. A convex rib for supporting the electric water heater is provided on the groove wall of the receiving groove. A first weight-reducing groove is provided at the center of the second end face of the packaging pad, and the diameter of the first weight-reducing groove is smaller than the diameter of the receiving groove at the convex rib. When stacking the electric water heaters, the packaging structure is padded at the end of the electric water heater, and the electric water heater is supported by the convex rib. Since the diameter of the first weight-reducing groove is smaller than the diameter of the receiving groove at the convex rib, the gravity of the electric water heater directly acts on the area covered by the second end face. When the strain of the packaging pad is small, the force-bearing support positions of the packaging pad are evenly distributed on the second end face, making the stacking of the electric water heaters stable; and the setting of the first weight-reducing groove can also reduce the material cost.

Description

Technical Field

[0001] The present invention relates to the technical field of electric water heaters, and particularly to a packaging structure for an electric water heater. Background Art

[0002] With the increasing production capacity of large household appliances, the warehouse storage pressure of household appliances is also increasing day by day. However, the problem of tilting after stacking cylindrical household appliances such as electric water heaters has always been difficult to solve. Most of the existing packaging pads for electric water heaters are made of expanded polystyrene (EPS) material. The expanded polystyrene material has the characteristic of insufficient rigidity. Therefore, when the electric water heater 100' is transported, a packing strap 200' needs to be used for fastening. As Figure 1 shown, the packaging pad 10' will be subjected to the pulling force of the packing strap 200' and the gravity of the electric water heater 100'. Under the action of the pulling force of the packing strap 200' and the gravity of the electric water heater 100', the packaging pad 10' is prone to deformation. The stress-bearing area at the bottom only focuses on the central area of the packaging structure, and the stress-bearing support area is small. When the stacking center of gravity shifts, a stacking tilt phenomenon occurs, resulting in a low stacking height of cylindrical household appliances, low storage utilization rate, and high storage cost. Summary of the Invention

[0003] The purpose of the present invention is to provide a packaging structure for an electric water heater to solve the technical problems of low stacking height and low storage utilization rate existing in the prior art.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] A packaging structure for an electric water heater includes a packaging pad. A receiving groove for receiving the end of the electric water heater is provided at the center of the first end face of the packaging pad. A rib for supporting the end of the electric water heater housing is provided on the groove wall of the receiving groove. A first weight-reducing groove is provided at the center of the second end face of the packaging pad, and the diameter of the first weight-reducing groove is smaller than the diameter of the receiving groove at the rib.

[0006] When stacking the electric water heater, this packaging structure is padded at both ends of the electric water heater, and the electric water heater is supported on the rib. Because the diameter of the first weight-reducing groove is smaller than the diameter of the receiving groove at the rib, the gravity of the electric water heater directly acts on the area covered by the second end face. When the strain of the packaging pad is small, the stress-bearing support positions of the packaging pad are evenly distributed on the second end face, making the stacking of the electric water heater stable; and the setting of the first weight-reducing groove can also reduce the material cost.

[0007] As a preferred technical solution of the packaging structure for an electric water heater, a secondary stress-bearing surface parallel to the second end face is formed at the bottom of the first weight-reducing groove.

[0008] When the strain of the packaging pad is relatively large, the secondary stress-bearing surface starts to bear force. By setting the secondary stress-bearing surface, it can ensure that there is still a certain force-bearing support area when the packaging pad undergoes stress deformation, thereby continuously ensuring the stability of the stacked electric water heaters.

[0009] As an optimal technical solution of the packaging structure of the electric water heater, the distance between the secondary stress-bearing surface and the second end face is 4 mm.

[0010] As an optimal technical solution of the packaging structure of the electric water heater, a reinforcing rib is connected between the groove wall of the first weight-reducing groove and the secondary stress-bearing surface.

[0011] As an optimal technical solution of the packaging structure of the electric water heater, several of the reinforcing ribs are evenly spaced along the circumferential direction of the secondary stress-bearing surface.

[0012] As an optimal technical solution of the packaging structure of the electric water heater, the thickness of the reinforcing rib gradually decreases in the direction from the groove wall of the first weight-reducing groove to the secondary stress-bearing surface.

[0013] As an optimal technical solution of the packaging structure of the electric water heater, the electric water heater is suspended in the accommodating groove.

[0014] As an optimal technical solution of the packaging structure of the electric water heater, several second weight-reducing grooves are provided on the second end face of the packaging pad.

[0015] As an optimal technical solution of the packaging structure of the electric water heater, several of the second weight-reducing grooves are distributed in a circular pattern around the circumferential direction of the first weight-reducing groove, and the diameter of the inner circle formed by the sides of several of the second weight-reducing grooves close to the first weight-reducing groove is larger than the diameter of the accommodating groove at the convex rib.

[0016] As an optimal technical solution of the packaging structure of the electric water heater, several third weight-reducing grooves are provided on the first end face of the packaging pad.

[0017] The beneficial effects of the present invention:

[0018] The present invention provides a packaging structure for an electric water heater, which includes a packaging pad. A receiving groove for receiving the end of the electric water heater is provided at the center of the first end face of the packaging pad. A rib for supporting the end of the electric water heater housing is provided on the groove wall of the receiving groove. A first weight-reducing groove is provided at the center of the second end face of the packaging pad, and the diameter of the first weight-reducing groove is smaller than the diameter of the receiving groove at the rib. When stacking the electric water heaters, this packaging structure is placed under the end of the electric water heater, and the electric water heater is supported on the rib. Since the diameter of the first weight-reducing groove is smaller than the diameter of the receiving groove at the rib, the gravity of the electric water heater directly acts on the area covered by the second end face. When the strain of the packaging pad is small, the force-bearing support positions of the packaging pad are evenly distributed on the second end face, making the stacking of the electric water heaters stable; and the setting of the first weight-reducing groove can also reduce the material cost.

[0019] Further, for the packaging structure of the electric water heater provided by the present invention, a secondary stress-bearing surface parallel to the second end face of the packaging pad is formed at the bottom of the first weight-reducing groove. When the strain of the packaging pad is large, the secondary stress-bearing surface starts to bear force. Through the setting of the secondary stress-bearing surface, it can be ensured that there is still a certain force-bearing support area when the packaging pad undergoes stress deformation, thereby continuously ensuring the stability of the stacking of the electric water heaters. Brief Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the deformation of the packaging structure of the electric water heater in the prior art;

[0021] Figure 2 is a schematic structural diagram of the first perspective of the packaging structure of the electric water heater provided by the embodiment of the present invention;

[0022] Figure 3 is a schematic structural diagram of the second perspective of the packaging structure of the electric water heater provided by the embodiment of the present invention;

[0023] Figure 4 is a top view of the packaging structure of the electric water heater provided by the embodiment of the present invention;

[0024] Figure 5 is Figure 4 a cross-sectional view along the A-A direction;

[0025] Figure 6 is a simplified force analysis diagram of the packaging structure of the electric water heater provided by the embodiment of the present invention.

[0026] In the figures:

[0027] 10’, packaging pad; 100’, electric water heater; 200’, packing strap;

[0028] 10. Packaging pad; 11. First end face; 111. Receiving groove; 1111. Convex rib; 112. Third weight reduction groove; 12. Second end face; 121. First weight reduction groove; 1211. Secondary stress surface; 122. Reinforcing rib; 123. Second weight reduction groove. Detailed implementation mode

[0029] The technical solution of the present invention will be further described below in conjunction with the drawings and implementation modes. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only the parts related to the present invention are shown in the drawings, rather than all of them.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0032] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0033] Such as Figures 2 to 5As shown in the figure, the present invention provides a packaging structure for an electric water heater, which includes a packaging pad 10. At the center of the first end face 11 of the packaging pad 10, there is a receiving groove 111 for receiving the end of the electric water heater. On the groove wall of the receiving groove 111, there are riblets 1111 for supporting the end of the electric water heater housing. At the center of the second end face 12 of the packaging pad 10, there is a first weight-reducing groove 121, and the diameter of the first weight-reducing groove 121 is smaller than the diameter of the receiving groove 111 at the riblets 1111.

[0034] When stacking the electric water heaters, place this packaging structure under the end of the electric water heater and make the electric water heater supported on the riblets 1111. Since the diameter of the first weight-reducing groove 121 is smaller than the diameter of the receiving groove 111 at the riblets 1111, the gravity of the electric water heater directly acts on the area covered by the second end face 12. When the strain of the packaging pad 10 is relatively small, the force-bearing support positions of the packaging pad 10 are evenly distributed on the second end face 12, making the stacking of the electric water heaters stable; and the setting of the first weight-reducing groove 121 can also reduce the material cost.

[0035] Furthermore, a secondary force-bearing surface 1211 parallel to the second end face 12 of the packaging pad 10 is formed at the bottom of the first weight-reducing groove 121. When the strain of the packaging pad 10 is relatively large, the secondary force-bearing surface 1211 starts to bear force. Through the setting of the secondary force-bearing surface 1211, it can be ensured that there is still a certain force-bearing support area when the packaging pad 10 undergoes stress deformation, thereby continuing to ensure the stability of the stacking of the electric water heaters.

[0036] In this embodiment, the distance between the secondary force-bearing surface 1211 and the second end face 12 is preferably 4 mm. Specifically, as Figure 6 shown, it is the stress state analysis of this packaging structure during transportation after being packed. Calculate the deflection of the packaging pad 10 after being stressed. The calculation formula is: where: F is the load applied by the packing strap, I is the rectangular moment of inertia, E is the elastic modulus, L is the length of the packaging pad 10, and a is the distance from the edge of the packaging pad 10 to the force application point of the packing strap. In this embodiment, it is set that: the gravity of the electric water heater G = 300 N, the load applied by the packing strap F = G / 2 = 150 N, the rectangular moment of inertia I = bh 2 / 12 = 7.7*10 -5 m 4 , the elastic modulus E = 3 Mpa, the length of the packaging pad 10 L = 0.7 m, and the distance from the edge of the packaging pad 10 to the force application point of the packing strap a = 0.15 m. It should be noted that the above numerical settings are all determined according to the actual use situation. After calculation, it is found that the deflection ω of the cushion after a single warehousing turnover max= 1.8 mm. In this embodiment, the material of the packaging pad 10 is preferably expanded polystyrene (EPS for short). EPS has the characteristic of light weight. Considering that the EPS material has a rebound rate of about 60%, the secondary stress surface 1211 being suspended by 4 mm can fully meet the requirement that there is still a large stress surface after the machine is transported multiple times. It can be seen that by setting the distance between the secondary stress surface 1211 and the second end face 12 as described above, it can not only ensure that the secondary stress surface 1211 is not suspended too high, but also ensure that there is still a large stress surface after the machine is transported multiple times. Of course, the above set values are not limited to this, and the distance between the secondary stress surface 1211 and the second end face 12 is not limited to this either, and can be adjusted according to the actual situation.

[0037] There is a reinforcing rib 122 connected between the groove wall of the first weight-reducing groove 121 and the secondary stress surface 1211. By providing the reinforcing rib 122, it can play a role in strengthening the local strength and supporting the secondary stress surface 1211. Preferably, several reinforcing ribs 122 are evenly spaced along the circumference of the secondary stress surface 1211 to better strengthen the local strength at the first weight-reducing groove 121 and better support the secondary stress surface 1211. Preferably, the thickness of the reinforcing rib 122 gradually decreases from the groove wall of the first weight-reducing groove 121 to the direction of the secondary stress surface 1211, that is to say, the reinforcing rib 122 smoothly transitions from the groove wall of the first weight-reducing groove 121 to the secondary stress surface 1211, and the structure is more reasonable, which can maximize the support and strengthening effects.

[0038] When the end cover of the electric water heater is supported on the convex rib 1111 , the end part of the electric water heater is suspended in the receiving groove 111 . Further ensure that all the gravity of the electric water heater acts on the convex rib 1111 , so as to ensure that the area covered by the second end face 12 is the primary stress area and can avoid the packaging pad 10 being deformed into a spherical shape due to stress to a certain extent.

[0039] There are several second weight-reducing grooves 123 provided on the second end face 12 of the packaging pad 10 to further reduce the material cost. Preferably, several second weight-reducing grooves 123 are circumferentially distributed around the first weight-reducing groove 121 , and the diameter of the inner circle formed by the sides of the several second weight-reducing grooves 123 close to the first weight-reducing groove 121 is larger than the diameter of the receiving groove 111 at the convex rib 1111 . In this embodiment, the cross-section of the second weight-reducing groove 123 is triangular, and the side close to the first weight-reducing groove 121 is set as the bottom edge, that is, the diameter of the inner circle formed by connecting the bottom edges of the several second weight-reducing grooves 123 is larger than the diameter of the receiving groove 111 at the convex rib 1111 . Through this setting, it is ensured that the gravity of the electric water heater acts on the annular plane between the first weight-reducing groove 121 and the second weight-reducing groove 123 , ensuring the stability of the stress support area.

[0040] A plurality of third weight-reducing grooves 112 are provided on the first end face 11 of the packaging pad 10 to further reduce the material cost.

[0041] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An electric water heater packaging structure, characterized in that, It includes a packaging pad (10). A receiving groove (111) for receiving the end of an electric water heater is provided at the center of the first end face (11) of the packaging pad (10). Ribs (1111) for supporting the electric water heater are provided only on the groove wall of the receiving groove (111). When the electric water heater is supported on the ribs (1111), the electric water heater is suspended in the receiving groove (111). A first weight-reducing groove (121) is provided at the center of the second end face (12) of the packaging pad (10), and the diameter of the first weight-reducing groove (121) is smaller than the diameter of the receiving groove (111) at the position of the ribs (1111). A secondary stress-bearing surface (1211) parallel to the second end face (12) is formed at the bottom of the first weight-reducing groove (121). Reinforcing ribs (122) are connected between the groove wall of the first weight-reducing groove (121) and the secondary stress-bearing surface (1211). The thickness of the reinforcing ribs (122) gradually decreases in the direction from the groove wall of the first weight-reducing groove (121) to the secondary stress-bearing surface (1211).

2. The electric water heater packaging structure according to claim 1, wherein, The distance between the secondary stress-bearing surface (1211) and the second end face (12) is 4 mm.

3. The electric water heater packaging structure according to claim 1, wherein, A plurality of the reinforcing ribs (122) are evenly spaced along the circumference of the secondary stress-bearing surface (1211).

4. The packaging structure of the electric water heater according to any one of claims 1-2, characterized in that, A plurality of second weight-reducing grooves (123) are provided on the second end face (12) of the packaging pad (10).

5. The electric water heater packaging structure according to claim 4, characterized in that, A plurality of the second weight-reducing grooves (123) are distributed in a circular pattern around the circumference of the first weight-reducing groove (121), and the diameter of the inner circle formed by the sides of the plurality of second weight-reducing grooves (123) close to the first weight-reducing groove (121) is larger than the diameter of the receiving groove (111) at the position of the ribs (1111).

6. The electric water heater packaging structure according to any one of claims 1-2, characterized in that, A plurality of third weight-reducing grooves (112) are provided on the first end face (11) of the packaging pad (10).

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