A cushioning device
By designing a buffer device with staggered ribs and corner reinforcement structures, the problems of insufficient energy dispersion and easy collapse of corners in existing buffer devices are solved, realizing the dispersion and layer-by-layer attenuation of impact energy, thereby improving impact resistance and product protection effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU SENTUO NEW ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-10-14
- Publication Date
- 2026-06-19
AI Technical Summary
Existing buffer devices have a simple structure, limited energy conduction paths, and lack specialized reinforcement design at the corners. This results in insufficient energy dispersion during high-intensity impacts, and the corners are prone to structural collapse, making it impossible to achieve gradual attenuation and effective absorption of impact energy.
A buffer device was designed, which employs an upper support component and a lower support component, including a fixed cavity, a limiting component and a support component. Multiple partitioned buffer cavities are formed by staggered airfoil ribs and ordinary ribs. Multi-dimensional limiting and graded buffering are achieved by using corner reinforcement structures to absorb impact energy.
It achieves the dispersion and layer-by-layer attenuation of impact energy, avoids stress concentration, improves impact resistance, protects product safety, and prevents corner collapse.
Smart Images
Figure CN224376506U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of product packaging and transportation technology, and in particular to a cushioning device. Background Technology
[0002] As new energy batteries and 3C electronic products develop towards miniaturization, lightweighting, and precision, higher requirements are placed on their cushioning and protection during transportation and storage.
[0003] Currently, common cushioning devices mainly use materials such as EPE foam and EPS foam. Although they have a certain shock absorption effect, they are expensive to produce and non-biodegradable. Traditional paper mold structures are mostly based on single cavities and straight ribs, resulting in poor energy dispersion and low cushioning efficiency. Existing technologies mainly have the following shortcomings:
[0004] 1. The structure is simple, and the energy conduction path is limited, which easily leads to concentrated impact;
[0005] 2. The corners lack specialized reinforcement design, resulting in poor drop resistance;
[0006] 3. The buffer cavity is simple and cannot achieve gradual attenuation of impact energy;
[0007] Chinese patent CN212530743U discloses an inflatable cushioning packaging device. Although the device solves the problem of providing partitioned cushioning protection for multi-component products and preventing internal items from colliding with each other, it still has problems such as relatively simple structure, limited energy conduction path, and lack of special reinforcement design at the corners. As a result, when subjected to high-intensity impact, the energy is not sufficiently dispersed and the corners are prone to structural collapse, making it impossible to achieve the gradual attenuation and effective absorption of impact energy.
[0008] Therefore, how to provide a one-piece molded buffer device with reasonable structure, excellent buffering performance and strong impact resistance has become an urgent technical problem to be solved. Utility Model Content
[0009] In view of this, in order to overcome the shortcomings of the prior art, the present invention aims to provide a buffer device.
[0010] This utility model provides a buffer device, which includes an upper support assembly and a lower support assembly. The upper support assembly includes a first fixed cavity and a first limiting assembly, and the lower support assembly includes a second fixed cavity and a second limiting assembly. The first limiting assembly is disposed on the inner wall of the first fixed cavity, and the second limiting assembly is disposed on the inner wall of the second fixed cavity. The first limiting assembly includes a first corner limiting buckle, a first stepped limiting rib, a first inclined guide rib, and a first longitudinal limiting rib. The first corner limiting buckle is disposed at the four corners of the first fixed cavity, forming a T-shape, with one end fixedly connected to the corner of the cavity and the other two ends connected to the first stepped limiting rib. Multiple sets of first stepped limiting ribs and first inclined guide ribs are alternately arranged along the inner side wall of the first fixed cavity. A first longitudinal limiting rib is disposed on the first inclined guide rib, and the lower end of the first longitudinal limiting rib is connected to the bottom of the first fixed cavity. The second limiting assembly is symmetrical in structure to the first limiting assembly and includes a second corner limiting buckle, a second stepped limiting rib, a second inclined guide rib, and a second longitudinal limiting rib.
[0011] Optionally, the buffer device of this utility model further includes a first main support component. The first main support component is located at the bottom of the first fixed cavity and includes a first support component, a first irregularly shaped limiting block, and a second positioning block. The two ends of multiple sets of first support components are respectively connected to the first stepped limiting ribs on both sides of the inner wall of the first fixed cavity. One end of the first irregularly shaped limiting block is connected to the first stepped limiting ribs on the other two sides of the inner wall of the first fixed cavity, and the other end is connected to the first support component through the second positioning block. Multiple sets of first support components are connected and fixed together through the second positioning block.
[0012] Optionally, in the buffer device of this utility model, the first support component includes two first support bosses and a first main support block, with both ends of the first main support block connected to the first support bosses respectively.
[0013] Optionally, the buffer device of this utility model further includes a second main support assembly in the lower support component. The second main support assembly is located at the bottom of the second fixed cavity and includes a second support assembly, a third support assembly, a third positioning block, and a fourth positioning block. The three ends of the two sets of second support assemblies are respectively connected to the second stepped limiting ribs on the inner wall of the second fixed cavity through the fourth positioning block, and one end is connected to the third support assembly through the third positioning block. The two ends of the third support assembly are connected to the second stepped limiting ribs on both sides of the inner wall of the second fixed cavity through the fourth positioning block. Multiple sets of third support assemblies are connected to each other through the third positioning block.
[0014] Optionally, in the buffer device of this utility model, the second support component includes a plurality of second support bosses and a fifth positioning block, and the second support bosses are connected and fixed to each other through the fifth positioning block.
[0015] Optionally, in the buffer device of this utility model, the third support component includes a plurality of second main support blocks and a sixth positioning block, and the second main support blocks are connected to each other through the sixth positioning block.
[0016] Optionally, the buffer device of this utility model further includes a first outer edge slot in the upper support assembly and a second outer edge slot in the lower support assembly. The first outer edge slot is located around the outer edge of the first fixed cavity and has multiple sets of alternating first flange limiting buckles and first flange positioning grooves. The second outer edge slot is located on the outer edge of the second fixed cavity and has multiple sets of alternating second flange limiting buckles and second flange positioning grooves.
[0017] Optionally, in the buffer device of this utility model, the first flange limiting buckle is provided with a first pressure relief groove, and the second flange limiting buckle is provided with a fourth pressure relief groove.
[0018] Optionally, in the buffer device of this utility model, a second pressure relief groove and a third pressure relief groove are formed at the overlap of the first fixed cavity shell, the first stepped limiting rib, and the first positioning block; and a fifth pressure relief groove, a sixth pressure relief groove, a seventh pressure relief groove, an eighth pressure relief groove, and a ninth pressure relief groove are formed at the overlap of the second fixed cavity shell, the second corner limiting buckle, the second stepped limiting rib, and the fourth positioning block.
[0019] Optionally, the buffer device of this utility model further includes a first positioning block, which connects and fixes the first stepped limiting ribs located at the four corners of the first fixed cavity through the first positioning block.
[0020] The buffer device of this utility model has the following beneficial technical effects:
[0021] 1. Rational Structure: Through the coordinated design of the fixed cavity, limiting ribs, and support components, multi-dimensional and hierarchical limiting and stable support for the product are achieved. The tight connections between components effectively prevent displacement and damage during product transportation.
[0022] 2. Excellent buffering performance: Multiple zoned buffer cavities are formed by alternating airfoil ribs and ordinary ribs. Impact energy can be guided and dispersed along the ribs and attenuated layer by layer in each cavity, avoiding stress concentration and achieving energy absorption and buffering.
[0023] 3. Strong impact resistance: The device features a reinforced structure formed integrally at all four corners, enhancing corner rigidity and compressive strength. In the event of a drop impact, the corners can preferentially absorb energy and deform, effectively preventing structural collapse and protecting the safety of the internal products. Attached Figure Description
[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a structural example diagram of a buffer device according to an embodiment of the present utility model;
[0026] Figure 2 This is an example diagram of the upper support component structure of a buffer device according to an embodiment of the present utility model;
[0027] Figure 3 This is another structural example diagram of the upper support assembly of a buffer device according to an embodiment of the present utility model;
[0028] Figure 4 This is an example diagram of the lower support assembly structure of a buffer device according to an embodiment of the present utility model;
[0029] Figure 5 This is another structural example diagram of the lower support assembly of a buffer device according to an embodiment of the present utility model;
[0030] In the figure, 1-upper support assembly, 2-lower support assembly, 11-first fixed cavity, 12-first limiting assembly, 13-first main body support assembly, 14-first outer edge slot, 21-second fixed cavity, 22-second limiting assembly, 23-second main body support assembly, 24-second outer edge slot, 111-second pressure relief groove, 112-third pressure relief groove, 121-first corner limiting buckle, 122-first stepped limiting rib, 123-first inclined guide rib, 124-first longitudinal limiting rib, 125-first positioning block, 131-first support assembly, 132-first irregularly shaped limiting block, 133-second positioning block, 141-first flange limiting buckle, 142-first flange positioning groove, 211-fifth pressure relief groove, 2 12-Sixth pressure relief groove, 213-Seventh pressure relief groove, 214-Eighth pressure relief groove, 215-Ninth pressure relief groove, 221-Second corner limiting buckle, 222-Second stepped limiting rib, 223-Second inclined guide rib, 224-Second longitudinal limiting rib, 231-Second support assembly, 232-Third support assembly, 233-Third positioning block, 234-Fourth positioning block, 241-Second flange limiting buckle, 242-Second flange positioning groove, 1311-First support boss, 1312-First main body support block, 1411-First pressure relief groove, 2311-Second support boss, 2312-Fifth positioning block, 2321-Second main body support block, 2322-Sixth positioning block, 2411-Fourth pressure relief groove. Detailed Implementation
[0031] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0032] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0034] Figure 1 This is a structural example diagram of a buffer device according to an embodiment of the present utility model, as shown below. Figure 1 As shown in this embodiment, a buffer device includes an upper support component 1 and a lower support component 2. The lower support component 2 and the upper support component 1 are structurally symmetrical and functionally corresponding, together achieving complete coverage and protection of the product.
[0035] Figure 2 This is an example diagram of the upper support component structure of a buffer device according to an embodiment of the present utility model. Figure 3 This is another structural example diagram of the upper support assembly of a buffer device according to an embodiment of the present invention. Figure 2 , Figure 3 As shown, in this embodiment, the upper support component 1 includes a first fixed cavity 11, a first limiting component 12, a first main body support component 13, and a first outer edge slot 14.
[0036] According to an optional example, the first limiting component 12 is disposed on the inner wall of the first fixed cavity 11, and includes a first corner limiting buckle 121, a first stepped limiting rib 122, a first inclined guide rib 123, a first longitudinal limiting rib 124, and a first positioning block 125. The first corner limiting buckle 121 is disposed at the four corners of the first fixed cavity 11, and has a T-shaped structure. One end of the buckle is fixedly connected to the corner of the cavity, and the other two ends are connected to the first stepped limiting rib 122.
[0037] Multiple sets of first-step limiting ribs 122 and first-sloping guide ribs 123 are alternately arranged along the inner wall of the first fixed cavity 11. The first-sloping guide ribs 123 are used to guide the product, reduce assembly friction, and improve the smoothness of demolding during molding.
[0038] The first longitudinal limiting rib 124 is fixed at one end to the first inclined guide rib 123, and its lower end is connected to the bottom of the first fixed cavity 11. The first longitudinal limiting rib 124 serves as a long support rib, used for longitudinal limiting and support of the product, while also enhancing the structural strength of the bottom of the cavity.
[0039] The alternating arrangement of the first stepped limiting rib 122 and the first inclined guide rib 123, together with the inner wall of the first fixed cavity 11, forms multiple independent partitioned buffer cavities, so that the external impact energy can be guided and dispersed along the ribs and attenuated layer by layer in each cavity, thus avoiding stress concentration.
[0040] The first stepped limiting ribs 122 located at the four corners are connected and fixed by the first positioning block 125. It should be noted that the number of steps of the first stepped limiting ribs 122 can be adjusted according to the specifications of the adapted product in actual application to achieve multi-level limiting and buffering requirements.
[0041] The first main support component 13 is located at the bottom of the first fixed cavity 11, and includes a first support component 131, a first irregularly shaped limiting block 132, and a second positioning block 133.
[0042] Multiple sets of first support components 131 are arranged along both sides of the first fixed cavity 11, with their two ends respectively connected to the oppositely arranged first stepped limiting ribs 122. One end of the first irregularly shaped limiting block 132 is connected to the other two first stepped limiting ribs 122 on the inner wall of the first fixed cavity 11, and the other end is connected to the first support component 131 through the second positioning block 133. The polygonal structure of the first irregularly shaped limiting block 132 conforms to the specific shape of the product to achieve precise positioning and effectively prevent the product from rotating. The multiple sets of first support components 131 are connected and fixed together by the second positioning block 133.
[0043] The first support component 131 includes two first support bosses 1311 and a first main support block 1312, with both ends of the first main support block 1312 connected to the first support bosses 1311 respectively.
[0044] It should be noted that, in practical applications, the number of the second positioning blocks 133 can be adaptively adjusted according to the actual structural requirements.
[0045] According to an optional example, in this embodiment, the first outer edge slot 14 is foldably disposed around the outer edge of the first fixed cavity 11. When the first outer edge slot 14 is in the folded state, it can achieve secondary positioning by engaging with the outer wall of the first fixed cavity 11. The first outer edge slot 14 is provided with multiple sets of alternating first flange limiting buckles 141 and first flange positioning grooves 142.
[0046] The first flange limiting buckle 141 is provided with a first pressure relief groove 1411, which facilitates the release of material stress during folding and provides a buffering effect through deformation when subjected to impact.
[0047] In addition, a second pressure relief groove 111 and a third pressure relief groove 112 are formed at the overlap of the outer shell of the first fixed cavity 11 with the first stepped limiting rib 122, the first positioning block 125 and other structures.
[0048] Figure 4 This is an example diagram of the lower support assembly structure of a buffer device according to an embodiment of the present utility model. Figure 5 This is another structural example diagram of the lower support assembly of a buffer device according to an embodiment of the present utility model, as shown below. Figure 4 , Figure 5 As shown, the lower support assembly 2 includes a second fixed cavity 21, a second limiting assembly 22, a second main body support assembly 23, and a second outer edge slot 24.
[0049] The second limiting component 22 is disposed inside the second fixed cavity 21, and includes a second corner limiting buckle 221, a second stepped limiting rib 222, a second inclined guide rib 223, and a second longitudinal limiting rib 224.
[0050] The second corner limiting buckle 221 is located at the four corners of the second fixed cavity 21 and has a T-shaped structure. One end of it is fixedly connected to the corner of the second fixed cavity 21, and the other two ends are respectively connected to the second stepped limiting rib 222.
[0051] It should be noted that, in practical applications, the T-shaped integrated structure of the first corner limiting buckle 121 and the second corner limiting buckle 221 can enhance the rigidity and compressive strength of the corners of the first fixed cavity 11 and the second fixed cavity 21. When subjected to drop impact, it can preferentially undergo controllable deformation to absorb energy, effectively preventing the corner structure from collapsing and providing primary protection for the product.
[0052] In practical applications, the first corner limiting buckle 121 and the second corner limiting buckle 221 can also be replaced with thickened block ribs, layered stacked ribs or arch bridge-shaped supports, which can also achieve the function of preferential energy absorption and preventing corner collapse.
[0053] Multiple sets of second-step limiting ribs 222 and second-sloping guide ribs 223 are alternately arranged and fixedly connected along the inner sidewall of the second fixed cavity 21. The second-sloping guide ribs 223 are used to guide the product, reduce assembly friction, and improve the smoothness of demolding during molding.
[0054] The side end of the second longitudinal limiting rib 224 is fixed to the second inclined guide rib 223, and its lower end is connected to the bottom of the second fixed cavity 21. The second longitudinal limiting rib 224 serves as a long support rib for longitudinal limiting and support of the product, while also enhancing the structural strength of the bottom of the cavity.
[0055] The alternating arrangement of the second stepped limiting rib 222 and the second inclined guide rib 223, together with the inner wall of the second fixed cavity 21, forms multiple independent partitioned buffer cavities, so that the external impact energy can be guided and dispersed along the ribs and attenuated layer by layer in each cavity, thus avoiding stress concentration.
[0056] It should be noted that in practical applications, one longitudinal limiting rib can be set on the first inclined guide rib 123 and the second inclined guide rib 223 according to product requirements (or none).
[0057] It should be noted that, in practical applications, the number of steps in the second-step limiting rib 222 can be adaptively adjusted according to the specifications and buffering requirements of the product being adapted, so as to achieve effective multi-level limiting and energy attenuation.
[0058] It should be noted that in practical applications, the first stepped limiting rib 122 and the second stepped limiting rib 222 can be replaced with arc-shaped ribs, wave-shaped ribs or gradient thickness ribs, which can also achieve the effect of dispersing stress and buffering impact.
[0059] The second main support assembly 23 is located at the bottom of the second fixed cavity 21, and includes a second support assembly 231, a third support assembly 232, a third positioning block 233, and a fourth positioning block 234. Three ends of the two sets of second support assemblies 231 are connected to the second stepped limiting ribs 222 on the inner wall of the second fixed cavity 21 via the fourth positioning block 234, and the other end is connected to the third support assembly 232 via the third positioning block 233. Both ends of each set of third support assemblies 232 are fixedly connected to the second stepped limiting ribs 222 on opposite sides of the inner wall of the second fixed cavity 21 via the fourth positioning block 234. Multiple sets of third support assemblies 232 arranged in the same direction are connected via the third positioning block 233.
[0060] The second support component 231 includes a plurality of second support bosses 2311 and a fifth positioning block 2312, and the second support bosses 2311 are connected and fixed to each other by the fifth positioning block 2312.
[0061] The third support component 232 includes multiple second main support blocks 2321 and a sixth positioning block 2322, and the second main support blocks 2321 are connected to each other through the sixth positioning block 2322.
[0062] It should be noted that in practical applications, the composition structure of the limiting components and main support components in the first fixed cavity 11 and the second fixed cavity 21 can be replaced with shoulder-type limiting, elastic slot or partition plate according to different products, which can also realize the multi-dimensional limiting of the product in the up and down, left and right and front and back directions.
[0063] The second outer edge slot 24 is foldably disposed on the outer edge of the second fixed cavity 21. When the second outer edge slot 24 is in the folded state, it can achieve secondary positioning by engaging with the outer wall of the second fixed cavity 21. The second outer edge slot 24 is provided with multiple sets of second flange limiting buckles 241 and second flange positioning grooves 242. The second flange limiting buckles 241 and second flange positioning grooves 242 are alternately arranged, and the second flange limiting buckles 241 is provided with a fourth pressure relief groove 2411.
[0064] It should be noted that in practical applications, the first flange limiting buckle 141, the first flange positioning groove 142, the second flange limiting buckle 241 and the second flange positioning groove 242 on the first outer edge slot 14 and the second outer edge slot 24 can be replaced with a tenon-groove fit, a wedge-type engagement or a friction fit structure, which can also ensure the stable positioning of the buffer device and the outer packaging box.
[0065] According to an optional example, in this embodiment, a fifth pressure relief groove 211, a sixth pressure relief groove 212, a seventh pressure relief groove 213, an eighth pressure relief groove 214 and a ninth pressure relief groove 215 are formed at the overlap of the outer shell of the second fixed cavity 21 with the second corner limiting buckle 221, the second stepped limiting rib 222, the fourth positioning block 234 and other structures.
[0066] It should be noted that in practical applications, the pressure-reducing groove facilitates material flow and venting during the one-piece molding process, preventing internal stress concentration and vacuum adsorption. Upon impact, the pressure-reducing groove can release localized stress through its own deformation, further enhancing the cushioning effect and preventing cracking or excessive deformation at weak points, thus improving overall reliability.
[0067] The application principle of this utility model is as follows:
[0068] The device guides the product into the first fixed cavity 11 and the second fixed cavity 21 through the first inclined guide rib 123 and the second inclined guide rib 223, and achieves multi-dimensional positioning and graded support for the product through the synergistic effect of the first stepped limiting rib 122, the second stepped limiting rib 222, the first longitudinal limiting rib 124, the second longitudinal limiting rib 224 and the first irregular limiting block 132.
[0069] After the upper and lower support components are closed, the first outer edge slot 14 and the second outer edge slot 24 are folded upwards, so that the first flange limiting buckle 141, the second flange limiting buckle 241, the first flange positioning groove 142, and the second flange positioning groove 242 fit and lock with the outer wall of their respective cavities. While reducing the overall height, displacement is prevented by cooperating with the outer box.
[0070] When subjected to external impact, the first corner limit buckle 121 and the second corner limit buckle 221 deform first to absorb energy. The impact force is dispersed to multiple partition buffer cavities through the first stepped limit rib 122 and the second stepped limit rib 222, and gradually attenuated. Combined with the deformation pressure relief and exhaust function of the pressure relief groove, stress concentration is avoided.
[0071] The first main support block 1312 and the second main support block 2321 together provide stable support, and the first irregularly shaped limiting block 132 conforms to the specific shape of the product to prevent rotation, so as to achieve full dissipation of impact energy before contacting the product and ensure transportation safety and reliability.
[0072] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A buffer device, characterized in that, The buffer device includes an upper support assembly and a lower support assembly. The upper support assembly includes a first fixed cavity and a first limiting assembly. The lower support assembly includes a second fixed cavity and a second limiting assembly. The first limiting assembly is disposed on the inner wall of the first fixed cavity, and the second limiting assembly is disposed on the inner wall of the second fixed cavity. The first limiting assembly includes a first corner limiting buckle, a first stepped limiting rib, a first inclined guide rib, and a first longitudinal limiting rib. The first corner limiting buckle is disposed at the four corners of the first fixed cavity in a T-shape, with one end fixedly connected to the corner of the cavity and the other two ends connected to the first stepped limiting rib. Multiple sets of the first stepped limiting rib and the first inclined guide rib are alternately arranged along the inner wall of the first fixed cavity. The first inclined guide rib is provided with a first longitudinal limiting rib, and the lower end of the first longitudinal limiting rib is connected to the bottom of the first fixed cavity. The second limiting assembly is symmetrical to the first limiting assembly and includes a second corner limiting buckle, a second stepped limiting rib, a second inclined guide rib, and a second longitudinal limiting rib.
2. The buffer device according to claim 1, characterized in that, The upper support assembly also includes a first main support assembly, which is located at the bottom of the first fixed cavity and includes a first support assembly, a first irregularly shaped limiting block, and a second positioning block. The two ends of the multiple sets of first support assemblies are respectively connected to the first stepped limiting ribs on opposite sides of the inner wall of the first fixed cavity. One end of the first irregularly shaped limiting block is connected to the first stepped limiting ribs on the other two sides of the inner wall of the first fixed cavity, and the other end is connected to the first support assembly through the second positioning block. The multiple sets of first support assemblies are connected and fixed together through the second positioning block.
3. The buffer device according to claim 2, characterized in that, The first support component includes two first support bosses and a first main support block, with both ends of the first main support block connected to the first support bosses respectively.
4. The buffer device according to claim 1, characterized in that, The lower support assembly also includes a second main support assembly, which is located at the bottom of the second fixed cavity and includes a second support assembly, a third support assembly, a third positioning block, and a fourth positioning block. The three ends of the two sets of second support assemblies are respectively connected to the second stepped limiting ribs on the inner wall of the second fixed cavity through the fourth positioning block, and one end is connected to the third support assembly through the third positioning block. The two ends of the third support assembly are connected to the second stepped limiting ribs on both sides of the inner wall of the second fixed cavity through the fourth positioning block. Multiple sets of third support assemblies are connected to each other through the third positioning block.
5. The buffer device according to claim 4, characterized in that, The second support component includes a plurality of second support bosses and a fifth positioning block, and the second support bosses are connected and fixed together by the fifth positioning block.
6. The buffer device according to claim 4, characterized in that, The third support component includes multiple second main support blocks and a sixth positioning block, and the second main support blocks are connected to each other through the sixth positioning block.
7. The buffer device according to claim 1, characterized in that, The upper support assembly further includes a first outer edge slot, and the lower support assembly further includes a second outer edge slot. The first outer edge slot is located around the outer edge of the first fixed cavity and has multiple sets of alternating first flange limiting buckles and first flange positioning grooves. The second outer edge slot is located on the outer edge of the second fixed cavity and has multiple sets of alternating second flange limiting buckles and second flange positioning grooves.
8. The buffer device according to claim 7, characterized in that, The first flange limiting buckle is provided with a first pressure relief groove, and the second flange limiting buckle is provided with a fourth pressure relief groove.
9. The buffer device according to claim 1, characterized in that, The first fixed cavity shell overlaps with the first stepped limiting rib and the first positioning block to form a second pressure relief groove and a third pressure relief groove. The second fixed cavity shell overlaps with the second corner limiting buckle, the second stepped limiting rib and the fourth positioning block to form a fifth pressure relief groove, a sixth pressure relief groove, a seventh pressure relief groove, an eighth pressure relief groove and a ninth pressure relief groove.
10. The buffer device according to claim 1, characterized in that, The first limiting component also includes a first positioning block, which is connected and fixed between the first stepped limiting ribs located at the four corners of the first fixed cavity.