A shock absorber and graded energy-absorbing underpad

Abstract

The utility model relates to packing equipment technical field provides a kind of shock absorber, including support body, support body is opened in and is equipped with containing cavity;Containing cavity is fixed with reinforcing sleeve, reinforcing sleeve is equipped with bushing, reinforcing sleeve and bushing between filling energy-absorbing body;The both ends of bushing extend to the two end faces of support body respectively, and are connected first cover plate and second cover plate respectively;Reinforcing sleeve, first cover plate and second cover plate are rigid material;Bushing is nylon material.By this, the utility model can resist greater impact by enhancing the strength of axial, and have energy-absorbing effect.Shape change is small, and it is not easy to produce larger deformation failure.The utility model further provides a kind of hierarchical energy-absorbing bottom pad, with seat body, the bottom of seat body is fixed with shock absorber.Through seat body and shock absorber absorb energy respectively, the deformation of seat body can be effectively reduced, permanent deformation failure is avoided.Utilize the axial resistance capacity of shock absorber, avoid seat body fracture failure under the condition of high impact force such as drop.

Description

Technical Field

[0001] This utility model belongs to the field of packaging equipment technology, and in particular relates to a shock absorber and a graded energy-absorbing base pad. Background Technology

[0002] Existing refrigerators or freezers generally use EPS (expandable polystyrene) foam padding as cushioning packaging, which absorbs impact energy by deforming the foam itself, protecting the product from damage during transportation and handling.

[0003] Foam is brittle, highly elastic, and has low strength. When subjected to high impacts such as drops, it is prone to breakage, causing the product to detach and directly impact the outer packaging, resulting in dents and damage. The high elasticity of foam means that during transportation, vibrations can cause rebound forces, further damaging the product. Furthermore, existing packaging can easily couple with transport vibration frequencies, creating resonance that reduces protective capabilities and may even damage the product. The high plasticity of foam means that repeated impacts can result in significant permanent deformation (compression rate exceeding 30%), leading to a sharp decline in protective performance.

[0004] Currently, the common solution is to increase the volume of the foam. However, due to the limitations of the overall packaging size and cost control, the increase in the volume of the foam is limited and it is difficult to adapt to complex stress environments.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] To address the aforementioned shortcomings, this utility model primarily provides a shock absorber that solves the technical problem that existing base pads are unable to effectively protect products under complex stress environments such as high impact and vibration.

[0007] To solve the above problems, this utility model provides a vibration damper, including a support body, the support body having a receiving cavity; a reinforcing sleeve is fixed inside the receiving cavity, a bushing is provided inside the reinforcing sleeve, and an energy-absorbing body is filled between the reinforcing sleeve and the bushing; The two ends of the bushing extend to the two end faces of the support body, and are respectively connected to the first cover plate and the second cover plate; The reinforcing sleeve, the first cover plate, and the second cover plate are all made of rigid materials; the bushing is made of nylon.

[0008] According to the vibration damper of this utility model, the energy-absorbing body is made of rubber.

[0009] According to the vibration damper of this utility model, the hardness of the energy-absorbing body is 50±5 Shore A.

[0010] According to the vibration damper of this utility model, the first cover plate has an annular assembly portion; the assembly portion protrudes into the bushing and forms a surface contact fit with the inner wall of the bushing.

[0011] According to the present invention, the energy-absorbing body has a partition extending outward from the main body; the partition is sandwiched between the second cover plate and the reinforcing sleeve.

[0012] According to the vibration damper of this utility model, a clearance cavity is formed between the second cover plate and the energy absorber.

[0013] According to the vibration damper of this utility model, the support body includes vibration isolation blocks and filling blocks connected to each other; the vibration isolation blocks are made of wood, and the filling blocks are formed of polyurethane foam.

[0014] According to the vibration damper of this utility model, the periphery of the reinforcing sleeve forms a flange structure, and the flange structure is sandwiched between the vibration isolation block and the filling block; a limiting groove is formed on the vibration isolation block; the first cover plate is embedded in the limiting groove and fixedly connected to the vibration isolation block; The vibration isolation block is also provided with a relief hole that extends to the limiting groove; the bushing can pass through the relief hole to connect to the first cover plate.

[0015] A graded energy-absorbing base pad includes a base body, the bottom of which has an installation cavity; the vibration damper is fixed inside the installation cavity.

[0016] According to the graded energy-absorbing base pad of this utility model, the mounting cavity of the base body is two and symmetrically distributed; a vibration damper is fixed in each mounting cavity.

[0017] In summary, the vibration damper of this invention, by enhancing axial strength, can resist significant impacts and has an energy absorption function. It exhibits minimal deformation, making it less prone to large deformation failures. This invention also provides a graded energy-absorbing base pad, comprising a seat with a vibration damper fixed to its bottom. By having the seat and vibration damper absorb energy separately, the deformation of the seat can be effectively reduced, preventing permanent deformation failure. Utilizing the axial resistance of the vibration damper, the seat is prevented from breaking under high impact forces such as drops. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the vibration damper of this utility model; Figure 2 This is a cross-sectional structural schematic diagram of the vibration damper of this utility model; Figure 3 This is a schematic diagram of the structure of the graded energy-absorbing base pad of this utility model; Figure 4 yes Figure 3 A schematic diagram of the structure in direction A; In the figure: 1-vibration isolation block, 11-filling block, 12-limiting groove, 13-relief hole; 2-energy absorber, 21-shield, 22-reinforcing sleeve, 23-separation part, 24-relief cavity; 3-first cover plate, 31-assembly part; 4-second cover plate, 5-seat body, 51-installation cavity. Detailed Implementation

[0019] See Figure 1 and Figure 2 The present invention provides a shock absorber, including a support body, wherein a receiving cavity is formed in the support body; a reinforcing sleeve 22 is fixed in the receiving cavity, a bushing 21 is provided in the reinforcing sleeve 22, and an energy-absorbing body 2 is filled between the reinforcing sleeve 22 and the bushing 21. The two ends of the bushing 21 extend to the two end faces of the support body, and are respectively connected to the first cover plate 3 and the second cover plate 4; The reinforcing sleeve 22, the first cover plate 3, and the second cover plate 4 of this utility model are all made of rigid materials, such as steel. The bushing 21 is made of nylon, which has a certain strength and a certain degree of toughness.

[0020] The bushing 21 is connected to the first cover plate 3 and the second cover plate 4 at both ends, and can resist a certain impact force. External impact or vibration is transmitted to the energy absorber 2, and the energy absorber 2 undergoes shear deformation to absorb energy. Preferably, the energy absorber 2 is made of rubber. Furthermore, in order to have a better energy absorption effect, the hardness of the energy absorber 2 of this invention is 50±5 Shore A.

[0021] The reinforcing sleeve 22 wraps around the outside of the energy absorber 2 to fasten it and prevent the energy absorber 2 from expanding too much laterally, which would result in a large rebound.

[0022] This novel vibration damper enhances axial strength, enabling it to withstand greater impacts and absorb energy. It also exhibits minimal deformation, reducing the likelihood of significant deformation failure.

[0023] In one embodiment, the first cover plate 3 has an annular assembly portion 31; the assembly portion 31 protrudes into the bushing 21 and forms a surface contact fit with the inner wall of the bushing 21; thus achieving the connection and fit between the two. The surface contact fit between the two can effectively transmit vibrations to the internal energy absorber 2; Optionally, the second cover plate 4 and the bushing 21 are fixed together by welding; for example, ultrasonic welding.

[0024] As one embodiment, the energy absorber 2 has a partition 23 extending outward from the body; the partition 23 is sandwiched between the second cover plate 4 and the reinforcing sleeve 22; to avoid hard contact between the two; and to absorb the vibration transmitted by the two.

[0025] Furthermore, a clearance cavity 24 is formed between the second cover plate 4 and the energy absorber 2, enabling the energy absorber 2 to deform smoothly and absorb energy.

[0026] In one embodiment, the support includes an interconnected vibration damping block 1 and a filling block 11; the vibration damping block 1 is made of wood, has a certain strength, and can absorb some impact energy. The filling block 11 is formed of polyurethane foam and is used to fix the components inside the cavity.

[0027] Optionally, the periphery of the reinforcing sleeve 22 is formed with a flange structure, which is sandwiched between the vibration isolation block 1 and the filling block 11 to fix it in the receiving cavity.

[0028] As one embodiment, a limiting groove 12 is formed on the vibration isolation block 1; the first cover plate 3 is embedded in the limiting groove 12 and fixedly connected to the vibration isolation block 1; the upper surface of the first cover plate 3 does not extend beyond the vibration isolation block 1, and is fixedly connected to the vibration isolation block 1 by through bolts, so as to jointly bear the external force.

[0029] The vibration isolation block 1 is also provided with a relief hole 13 that extends to the limiting groove 12; the bushing 21 can pass through the relief hole 13 to connect to the first cover plate 3; See Figure 3 and Figure 4 The present invention also provides a graded energy-absorbing base pad, including a base body 5, wherein the bottom of the base body 5 is provided with an installation cavity 51; the vibration damper is fixed in the installation cavity 51. The seat 5 is made of foam material, which is soft and in direct contact with the product, providing good protection for its appearance. When subjected to external impact, the seat 5 absorbs some energy, and the energy-absorbing body 2 of the shock absorber absorbs some energy, effectively reducing the deformation of the seat 5. Through staged energy absorption, the seat 5 is prevented from losing its protective performance due to large permanent deformation after multiple impacts.

[0030] Because the energy absorber 2 absorbs some of the energy, it reduces the rebound force of the seat 5, protecting the product from damage. During transportation, the energy absorber 2 of the shock absorber plays a role in vibration isolation, changing the system's natural frequency and preventing resonance.

[0031] When subjected to drop impact, the high rigidity of the shock absorber enables it to withstand a large impact force, preventing the seat 5 from breaking and failing.

[0032] As one embodiment, the mounting cavity 51 of the seat body 5 is two and symmetrically distributed; a vibration damper is fixed in each mounting cavity 51; it can balance and support the product and prevent the seat body 5 on one side from tilting due to large deformation.

[0033] In summary, this invention provides a vibration damper that, by enhancing axial strength, can resist significant impacts and also has an energy-absorbing function. It exhibits minimal deformation, making it less prone to large deformation failures. This invention also provides a graded energy-absorbing base pad, comprising a seat with a vibration damper fixed to its bottom. By having the seat and vibration damper absorb energy separately, the deformation of the seat can be effectively reduced, preventing permanent deformation failure. Utilizing the axial resistance of the vibration damper, the seat is prevented from breaking under high impact forces such as drops.

[0034] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A vibration damper, characterized in that, It includes a support body, which has a receiving cavity; a reinforcing sleeve is fixed inside the receiving cavity, a bushing is provided inside the reinforcing sleeve, and an energy-absorbing body is filled between the reinforcing sleeve and the bushing; The two ends of the bushing extend to the two end faces of the support body, and are respectively connected to the first cover plate and the second cover plate; The reinforcing sleeve, the first cover plate, and the second cover plate are all made of rigid materials; the bushing is made of nylon.

2. The vibration damper as described in claim 1, characterized in that, The energy absorber is made of rubber.

3. The vibration damper as described in claim 2, characterized in that, The hardness of the energy absorber is 50±5 Shore A.

4. The vibration damper as described in claim 1, characterized in that, The first cover plate has an annular assembly portion; the assembly portion protrudes into the bushing and forms a surface contact fit with the inner wall of the bushing.

5. The vibration damper as described in claim 1, characterized in that, The energy absorber has a partition extending outward from the main body; the partition is sandwiched between the second cover plate and the reinforcing sleeve.

6. The vibration damper as described in claim 1, characterized in that, A clearance cavity is formed between the second cover plate and the energy absorber.

7. The vibration damper as described in claim 1, characterized in that, The support structure includes interconnected vibration isolation blocks and filling blocks; the vibration isolation blocks are made of wood, and the filling blocks are formed of polyurethane foam.

8. The vibration damper as described in claim 7, characterized in that, The periphery of the reinforcing sleeve forms a flanged structure, which is sandwiched between the vibration isolation block and the filling block; a limiting groove is formed on the vibration isolation block; the first cover plate is embedded in the limiting groove and fixedly connected to the vibration isolation block. The vibration isolation block is also provided with a relief hole that extends to the limiting groove; the bushing can pass through the relief hole to connect to the first cover plate.

9. A graded energy-absorbing base pad, characterized in that, The device includes a base, the bottom of which has a mounting cavity; a vibration damper as described in any one of claims 1 to 8 is fixed inside the mounting cavity.

10. The graded energy-absorbing base pad as described in claim 9, characterized in that, The mounting cavity of the seat is two and symmetrically distributed; a vibration damper is fixed in each mounting cavity.

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