Internal protection device for paper-plastic packaging box for household appliances
By incorporating cushioning and clamping components within the paper-plastic packaging box, the problem of insufficient cushioning performance of the paper-plastic packaging box is solved, achieving effective protection and stable clamping of electrical appliances of different specifications, and improving the protection effect and practicality during transportation.
Patent Information
- Application Number
- CN202520430237.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Existing paper-plastic packaging boxes have insufficient internal cushioning, weak load-bearing capacity, poor impact resistance, and cannot be adapted to different specifications of electrical appliances, resulting in poor practicality.
A paper-plastic packaging box for household appliances was designed, which includes a cushioning component and a clamping component. The cushioning component consists of a rotating block, a spring, and a buffer block. The rotation of the rotating block and the sliding of the slider allow it to adapt to appliances of different shapes. The clamping component uses a bidirectional screw and a clamping block to achieve stable clamping. The combination of a threaded rod and a gear structure enables quick installation and removal of the buffer block.
It improves the cushioning performance of paper-plastic packaging boxes and the stability of electrical appliances, making them adaptable to electrical appliances of different specifications and enhancing protection and practicality during transportation.
Smart Images

Figure CN223792034U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of internal protection technology for paper-plastic packaging boxes, and in particular to an internal protection device for paper-plastic packaging boxes used in household appliances. Background Technology
[0002] Paper-plastic packaging boxes are an environmentally friendly packaging container, mainly made of paper pulp or plant fibers and produced using specific processes. They typically use renewable fibers such as waste paper, sugarcane pulp, and bamboo pulp, and sometimes add environmentally friendly adhesives or waterproofing agents. They are biodegradable or recyclable, reducing plastic pollution and conforming to the trend of sustainable development.
[0003] Existing paper-plastic packaging boxes have insufficient internal cushioning performance, resulting in weak load-bearing capacity and poor impact resistance, which can easily lead to damage to electrical appliances during transportation. Furthermore, most paper-plastic packaging boxes adopt an integral structure, and their internal structure cannot be adjusted. Therefore, one type of packaging box can only be used for one type of electrical appliance, which is not very practical. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an internal protective device for paper-plastic packaging boxes used in household appliances.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An internal protective device for a paper-plastic packaging box for household appliances includes a box body. The box body is equipped with two sets of symmetrical cushioning components. Each cushioning component includes two symmetrical openings within the box body. A slider is slidably connected to each of the two openings. A rotating block is rotatably mounted on each of the two sliders. Both rotating blocks are L-shaped. Multiple springs are fixedly mounted on the sidewalls of the rotating blocks. A cushioning block is solidly fixed to the end of each spring away from the rotating block. A clamping assembly is installed within the box body, and two sets of symmetrical mounting assemblies are also installed within the box body.
[0007] Preferably, the mounting assembly includes mounting openings on the two sliders, a control cavity is formed inside the housing, a threaded rod is rotatably connected inside the control cavity, a spur gear is fixedly mounted on one end of the threaded rod, two centrally symmetrical racks are slidably mounted inside the control cavity, both racks mesh with the spur gear, a sliding block is fixedly mounted on the end of each rack away from the spur gear, and mounting blocks are fixedly mounted on the sidewalls of the two sliding blocks that are away from each other, and the two mounting blocks slide through the control cavity and are slidably connected to the two mounting openings respectively.
[0008] Preferably, the clamping assembly includes a bidirectional screw rotatably connected to the housing, two mutually symmetrical moving blocks are threadedly connected to the bidirectional screw, and a clamping block is fixedly installed on each of the two moving blocks. A slide rod is fixedly installed inside the housing, and the other ends of the two moving blocks are slidably connected to the slide rod.
[0009] Preferably, the box body has an observation window, which is made of transparent plastic.
[0010] Preferably, the two threaded rods are fixedly connected at their ends close to each other, and a knob is fixedly installed on one end of one of the threaded rods.
[0011] Preferably, the front ends of the four buffer blocks are all installed in a wavy shape.
[0012] 1. Compared with the prior art, the beneficial effects of this utility model are: by combining the spring and the buffer block on the rotating block, a buffer structure is formed, which can protect the internal electrical components. At the same time, by rotating the rotating block and the slider, the rotating block can be adjusted to adapt to the protection of electrical components with curved surfaces. Furthermore, by restricting the mounting opening with the mounting block, the slider and the buffer block can be quickly installed and replaced. Therefore, buffer blocks of different specifications can be provided according to different specifications of electrical components, thus improving practicality.
[0013] 2. The rotation of the bidirectional screw drives the two moving blocks to move closer to each other, and drives the two clamping blocks to clamp the electrical appliance, thereby further improving the stability of the electrical appliance and meeting the needs of the staff. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of an internal protective device for a paper-plastic packaging box for household appliances, as proposed in this utility model.
[0015] Figure 2 This is a three-dimensional structural diagram of the internal protective device for a paper-plastic packaging box for household appliances proposed in this utility model.
[0016] Figure 3 This is a three-dimensional structural diagram of the rotating block of the internal protective device for a paper-plastic packaging box for household appliances proposed in this utility model.
[0017] Figure 4 This is a three-dimensional cross-sectional view of the installation components of an internal protective device for a paper-plastic packaging box for household appliances, as proposed in this utility model.
[0018] In the diagram: 1. Box body, 2. Opening, 3. Slider, 4. Rotating block, 5. Spring, 6. Buffer block, 7. Mounting port, 8. Control cavity, 9. Threaded rod, 10. Spur gear, 11. Rack, 12. Sliding block, 13. Mounting block, 14. Bidirectional screw, 15. Moving block, 16. Clamping block, 17. Slide rod, 18. Observation window, 19. Knob. Detailed Implementation
[0019] Reference Figures 1-4 An internal protective device for a paper-plastic packaging box for household appliances includes a box body 1. The box body 1 has an observation window 18 made of transparent plastic. Through the observation window 18, the user can clearly observe the condition of the appliance inside the box body 1, improving the aesthetics. The box body 1 is equipped with two sets of mutually symmetrical buffer components. The buffer components include two mutually symmetrical openings 2 inside the box body 1. A slider 3 is slidably connected in each of the two openings 2. A rotating block 4 is rotatably installed on each of the two sliders 3. The two rotating blocks 4 are L-shaped. Multiple springs 5 are fixedly installed on the side wall of the rotating block 4.
[0020] Multiple springs 5 are fixedly mounted with buffer blocks 6 at the ends away from the rotating block 4. The front ends of the four buffer blocks 6 are all installed in a wave shape. Through their wave shape, they can more effectively relieve impact, thereby improving the protection effect and meeting the user's needs. A clamping assembly is installed inside the box body 1. The clamping assembly includes a bidirectional screw 14 rotatably connected inside the box body 1. The bidirectional screw 14 is existing technology. The two ends of the bidirectional screw 14 have opposite rotation directions. Therefore, two objects threaded on it will move in different directions. Two mutually symmetrical moving blocks 15 are threadedly connected to the bidirectional screw 14. A clamping block 16 is fixedly mounted on each of the two moving blocks 15. A slide rod 17 is fixedly mounted inside the box body 1. The other ends of the two moving blocks 15 are slidably connected to the slide rod 17.
[0021] With the above structure, when the bidirectional screw 14 rotates, it drives the two moving blocks 15 to move closer to each other, and causes the two clamping blocks 16 to clamp the electrical appliance, improving the stability of the electrical appliance and thus effectively improving the protection of the electrical appliance. The box 1 is equipped with two sets of mutually symmetrical mounting components. The mounting components include mounting ports 7 opened on the two sliders 3. The box 1 is equipped with a control cavity 8. The control cavity 8 is rotatably connected with a threaded rod 9. The two threaded rods 9 are fixedly connected at their close ends. A knob 19 is fixedly installed on one end of one of the threaded rods 9. Because of the fixed connection of the two threaded rods 9, when one threaded rod 9 rotates, the two threaded rods 9 will rotate simultaneously.
[0022] Therefore, two sets of mounting components can simultaneously restrict multiple sliders 3. Operators can easily rotate the threaded rod 9 via knob 19. A spur gear 10 is fixedly mounted on one end of the threaded rod 9. Two centrally symmetrical racks 11 are slidably mounted inside the control cavity 8, both meshing with the spur gear 10. Sliding blocks 12 are fixedly mounted on the ends of the two racks 11 away from the spur gear 10. Mounting blocks 13 are fixedly mounted on the sidewalls of the two sliding blocks 12 that are far from each other. The two mounting blocks 13 slide through the control cavity 8 and are slidably connected to the two mounting ports 7 respectively. Through this structure, rotating knob 19 rotates the threaded rod 9, causing the spur gear 10 to rotate, which in turn causes the two racks 11 to slide within the control cavity 8. This allows the two sliding blocks 12 to move the two mounting blocks 13 into the two mounting ports 7, completing the restriction and installation of the sliders 3. This allows for quick installation and disassembly, facilitating rapid replacement of the buffer block 6 by operators, improving practicality, and meeting the user's needs.
[0023] In this invention, the working principle is as follows: The user selects the appropriate slider 3 and buffer block 6 according to the current electrical appliance. Then, multiple sliders 3 are placed into the opening 2. The user rotates knob 19, which drives threaded rod 9 to rotate, thereby driving spur gear 10 to rotate. This causes the two meshing racks 11 to slide within the control cavity 8, driving two sliding blocks 12 and two mounting blocks 13 into the mounting opening 7 to complete the installation and restriction of the slider 3. Simultaneously, through the fixed installation of the two threaded rods 9, another set of mounting components also completes the installation of the slider 3. The user can then rotate rotating block 4 to adapt it to the shape of the electrical appliance. The user then places the electrical appliance in, and the appliance presses against the buffer block 6, causing it to retract. Under the rebound of spring 5, the buffer block 6 is pressed tightly against the appliance, providing protection. The user then rotates bidirectional screw 14, which drives two moving blocks 15 to move closer together, causing two clamping blocks 16 to clamp the appliance. Finally, the box 1 is closed, completing the protection of the electrical appliance and meeting the user's needs.
Claims
1. A paper-plastic packaging box interior protection device for household appliances, comprising a box body (1), characterized in that, The box (1) is provided with two sets of mutually symmetrical buffer assemblies, the buffer assembly comprises two mutually symmetrical openings (2) in the box (1), two sliding blocks (3) are slidably connected in the openings (2), two rotating blocks (4) are rotatably connected on the sliding blocks (3), the rotating blocks (4) are L-shaped, a plurality of springs (5) are fixedly connected on the side wall of the rotating block (4), a plurality of buffer blocks (6) are fixedly connected on the ends of the springs (5), a clamping assembly is arranged in the box (1), and two sets of mutually symmetrical mounting assemblies are arranged in the box (1).
2. A paper-plastic packing box interior protection device for a household appliance according to claim 1, characterized in that, The mounting assembly comprises a mounting hole (7) in the sliding block (3), a control cavity (8) is formed in the box (1), a threaded rod (9) is rotatably connected in the control cavity (8), a straight gear (10) is fixedly connected on one end of the threaded rod (9), two center symmetrical racks (11) are slidably arranged in the control cavity (8), a sliding block (12) is fixedly connected on the end of each rack (11) away from the straight gear (10), an installation block (13) is fixedly connected on the side wall of each sliding block (12) away from each other, and the installation blocks (13) are slidably connected in the control cavity (8) and the mounting holes (7).
3. A paper-plastic packing box interior protection device for a household appliance according to claim 1, characterized in that, The clamping assembly comprises a bidirectional screw rod (14) rotatably connected in the box (1), two mutually symmetrical moving blocks (15) are threadedly connected on the bidirectional screw rod (14), clamping blocks (16) are fixedly connected on the moving blocks (15), a sliding rod (17) is fixedly connected in the box (1), and the other ends of the moving blocks (15) are slidably connected on the sliding rod (17).
4. A paper-plastic packing box interior protection device for a household appliance according to claim 1, characterized in that, An observation window (18) is formed in the box (1), and the observation window (18) is made of transparent plastic material.
5. A paper-plastic packing box interior protection device for a household appliance according to claim 2, characterized in that, The ends of the threaded rods (9) close to each other are fixedly connected, and a knob (19) is fixedly connected on one end of one threaded rod (9).
6. A paper-plastic packing box interior protection device for a household appliance according to claim 1, characterized in that, The front ends of the four buffer blocks (6) are in wave shape.