Rubber shell assembly structure with high space utilization rate
By using a sloping snap-fit structure and an anti-detachment stabilizing device, the design solves the problems of space waste and large impact force of traditional plastic shell assembly structures, achieving high space utilization and stable connection, and reducing mold costs.
Patent Information
- Application Number
- CN202423262190.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Traditional plastic housing assembly structures suffer from wasted space and high design difficulty, and the high impact force of plastic injection molding can easily damage the product.
It adopts inclined snap-fit blocks, inclined snap-fit grooves and anti-detachment stabilizing devices, combined with epoxy resin potting to avoid the impact of colloid injection molding. Stable connection is achieved through the cooperation of limit rods, sliding strips and locking strips.
It improves space utilization, simplifies the assembly structure, reduces mold manufacturing costs, enhances connection stability, and avoids product damage.
Smart Images

Figure CN223872578U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of small product assembly technology, and in particular to a plastic shell assembly structure with high space utilization. Background Technology
[0002] In electronic devices, appliances, and many other products, housings are common protective and securing components. Traditional housing assembly structures are often quite simple and straightforward. For example, some housings are simple box-like structures with an undesigned internal space layout. This can lead to wasted space when housing electronic components and other parts.
[0003] Existing assembly methods for plastic housings are most commonly external snap-fit, internal snap-fit, and low-pressure overmolding. External snap-fit and internal snap-fit require additional fasteners, which occupy the product's external dimensions. This results in either an increase in the external dimensions or a reduction in the internal space, leading to an increase in the product's overall volume. When the volume remains the same, the internal space can only be reduced, increasing the difficulty of product design. Low-pressure overmolding can achieve concealed sealing without changing the product's external dimensions. However, the impact force of plastic injection molding is very large, which can cause damage and destruction to the product. Therefore, this application proposes a plastic housing assembly structure with high space utilization. Summary of the Invention
[0004] The purpose of this utility model is to address the problems in the background technology where external and internal snap-fit designs require additional snap positions, which occupies the product's external dimensions, resulting in either an increased external size or a reduction in the internal space, thus increasing the product's overall volume; when the volume remains the same, the only option is to reduce the internal space, which increases the difficulty of product design. The present invention proposes a plastic shell assembly structure with high space utilization.
[0005] The technical solution of this utility model: a space-efficient plastic shell assembly structure, including a bottom shell and a top cover, and further comprising:
[0006] Two inclined snap-fit blocks are installed on one side of the face cover. The inner walls of the bottom shell are provided with inclined snap-fit grooves that match the inclined snap-fit blocks. The bottom shell and the face cover are matched. A support block is fixedly connected to the inner wall of the bottom shell near the inclined snap-fit blocks.
[0007] An anti-detachment stabilizing device is installed on the support block for a stable connection between the bottom shell and the top cover.
[0008] Optionally, the anti-detachment stabilizing device includes a sliding bar disposed on one side of the support block, and a limit rod is fixedly connected to the bottom end of the sliding bar.
[0009] Optionally, a groove is provided on one side of the support block, the sliding strip is slidably installed in the groove, and a retaining strip is fixedly connected to one side of the sliding strip.
[0010] Optionally, the inclined snap-fit block has a cavity, and an elastic rod is fixedly installed on one side of the inner wall of the cavity, with a limit block fixedly connected to the elastic rod.
[0011] Optionally, the limiting block is provided with a limiting hole that matches the limiting rod, and the limiting hole allows the limiting rod to be inserted through it.
[0012] Optionally, multiple elastic rods are provided, and a fastening block is fixedly connected to the bottom end of the lowest elastic rod corresponding to the limiting block.
[0013] Optionally, the fastening block has a fastening groove that matches the limiting rod.
[0014] In summary, this application includes at least one of the following beneficial technical effects:
[0015] This invention avoids the use of colloid injection molding by setting up inclined snap-fit blocks, inclined snap-fit grooves, and epoxy resin. This avoids the large impact force of colloid injection molding, which could cause damage and destruction to the product. The inclined snap-fit structure simplifies the assembly structure and reduces mold manufacturing costs.
[0016] Furthermore, by setting a limiting rod, sliding strip, locking strip, and limiting block, the limiting rod can slide through the limiting block and lock into the snap-fit groove, thus fixing the limiting rod in place. This strengthens the connection between the bottom shell and the top cover, making the snap-fit of the inclined snap-fit block more stable and less likely to fall off.
[0017] This invention realizes the assembly of the plastic shell with a beveled snap-fit structure, which simplifies the assembly structure, reduces the mold manufacturing cost, and improves the stability of the beveled snap-fit connection, making it less likely to fall off and improving product quality. Attached Figure Description
[0018] Figure 1 A schematic diagram of one embodiment of the present invention is provided;
[0019] Figure 2 A schematic diagram of the support block connection structure according to one embodiment of the present invention is provided;
[0020] Figure 3 A schematic diagram of the sliding bar connection structure according to an embodiment of the present invention is provided;
[0021] Figure 4 A schematic diagram of the limiting rod connection structure according to one embodiment of the present invention is provided.
[0022] Reference numerals in the attached drawings: 1. Bottom shell; 2. Top cover; 3. Angled snap-fit block; 4. Angled snap-fit groove; 5. Support block; 6. Slide groove; 7. Sliding strip; 8. Snap-fit block; 9. Limiting rod; 10. Locking strip; 11. Cavity; 12. Elastic rod; 13. Limiting block. Detailed Implementation
[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0024] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0025] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0027] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.
[0029] Example
[0030] like Figure 1 and Figure 2 As shown, the present invention proposes a space-efficient plastic shell assembly structure, including a bottom shell 1 and a top cover 2, and also includes two inclined snap-fit blocks 3 installed on one side of the top cover 2. The inner walls of the bottom shell 1 are provided with inclined snap-fit grooves 4 that match the inclined snap-fit blocks 3. The plastic shell assembly uses potted epoxy resin, which has no impact force, thus avoiding the large impact force of the colloid injection molding, which could cause damage and destruction to the product.
[0031] In addition, the bottom shell 1 and the top cover 2 are matched. The inner wall of the bottom shell 1 is fixedly connected to the position of the inclined snap block 3. There are four support blocks 5, which correspond to the top and bottom of the inclined snap block 3 respectively. That is, when the bottom shell 1 and the top cover 2 are fastened together, the inclined snap block 3 is located between two support blocks 5.
[0032] like Figure 1-4 As shown, the device also includes an anti-detachment stabilizing device, which is set on the support block 5 for the stable connection between the bottom shell 1 and the top cover 2. The anti-detachment stabilizing device includes a sliding bar 7 set on one side of the support block 5. The bottom end of the sliding bar 7 is fixedly connected to a limiting rod 9. A groove 6 is opened on one side of the support block 5. The sliding bar 7 is slidably installed in the groove 6. The sliding bar 7 can drive the limiting rod 9 to move downward along the direction of the groove 6.
[0033] Furthermore, a retaining strip 10 is fixedly connected to one side of the sliding strip 7, and a cavity 11 is opened inside the inclined snap block 3. The length of the retaining strip 10 is just outside the cavity 11. When the limiting rod 9 is lowered and moved into the cavity 11, the retaining strip 10 can just abut against the outer surface of the inclined snap block 3. An elastic rod 12 is fixedly installed on one side of the inner wall of the cavity 11. A limiting block 13 is fixedly connected to the elastic rod 12. A limiting hole matching the limiting rod 9 is opened on the limiting block 13. The limiting hole allows the limiting rod 9 to be inserted through. When the limiting rod 9 enters the cavity 11, it will pass through the limiting block 13, keeping the limiting rod 9 in a vertical state and preventing the bottom shell 1 and the top cover 2 from falling off.
[0034] Furthermore, multiple elastic rods 12 are provided, and a fastening block 8 is fixedly connected to the bottom end of the lowest elastic rod 12 corresponding to the limiting block 13. The fastening block 8 has a fastening groove that matches the limiting rod 9. When the locking strip 10 abuts against the outer surface of the inclined locking block 3, the limiting rod 9 inserts into multiple limiting holes, passes through the limiting block 13, and successfully enters the fastening groove to complete the limiting and fixing, thereby improving the stability of the connection.
[0035] In this embodiment, when it is necessary to connect the bottom shell 1 and the top cover 2, the inclined snap-fit block 3 is pressed into the inclined snap-fit groove 4, and the snap-fit strip 10 is pulled, so that the sliding strip 7 moves downward along the direction of the sliding groove 6, so that the limiting rod 9 moves down and enters the cavity 11. The limiting rod 9 passes through multiple limiting holes and inserts into the limiting block 13. When the snap-fit strip 10 abuts against the upper surface of the inclined snap-fit block 3, the limiting rod 9 successfully enters the snap-fit block 8, so that the top round handle of the limiting rod 9 is locked in the snap-fit groove, making the snap-fit of the inclined snap-fit block 3 more stable and firm, and preventing it from loosening.
[0036] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A space-efficient plastic shell assembly structure, comprising a bottom shell (1) and a top cover (2), characterized in that, Also includes: Two inclined snap-fit blocks (3) are installed on one side of the face cover (2). The inner walls of the bottom shell (1) are provided with inclined snap-fit grooves (4) that match the inclined snap-fit blocks (3). The bottom shell (1) and the face cover (2) are matched. A support block (5) is fixedly connected to the inner wall of the bottom shell (1) near the inclined snap-fit blocks (3). Anti-detachment stabilizing device, which is set on the support block (5) for stable connection of bottom shell (1) and top cover (2).
2. The space-efficient plastic shell assembly structure according to claim 1, characterized in that, The anti-detachment stabilizing device includes a sliding bar (7) disposed on one side of the support block (5), and a limit rod (9) is fixedly connected to the bottom end of the sliding bar (7).
3. The space-efficient plastic shell assembly structure according to claim 2, characterized in that, A groove (6) is provided on one side of the support block (5), and the sliding strip (7) is slidably installed in the groove (6). A retaining strip (10) is fixedly connected to one side of the sliding strip (7).
4. The space-efficient plastic shell assembly structure according to claim 2, characterized in that, The inclined snap-fit block (3) has a cavity (11) inside, and an elastic rod (12) is fixedly installed on one side of the inner wall of the cavity (11). A limit block (13) is fixedly connected to the elastic rod (12).
5. The space-efficient plastic shell assembly structure according to claim 4, characterized in that, The limiting block (13) has a limiting hole that matches the limiting rod (9), and the limiting hole allows the limiting rod (9) to be inserted through.
6. The space-efficient plastic shell assembly structure according to claim 4, characterized in that, Multiple elastic rods (12) are provided, and the limiting block (13) is fixedly connected to the bottom end of the lowest elastic rod (12) with a fastening block (8).
7. The space-efficient plastic shell assembly structure according to claim 6, characterized in that, The fastening block (8) has a fastening groove that matches the limiting rod (9).