A plastic housing with concealed screw assembly

Abstract

The utility model discloses a plastic shell of hidden screw assembly, including first casing, the top of first casing and the bottom of second casing mutually adhere to, and the connecting place of first casing and second casing is provided with sealing mechanism, this plastic shell of hidden screw assembly is provided with positioning mechanism, when the positioning block and the positioning slot are engaged, first casing and second casing do not move misplacement between, thereby conveniently install screw on first hollow rod and second hollow rod, and the screw head hides in the inside of recess, does not affect the overall appearance of product, also can not cause screw loosening because of the collision, is provided with the plugging mechanism, and through the wrench rotation sealing plug, can press the rubber air bag, increased the sealing between sealing plug and recess, played the waterproof function, avoided the influence that screw received external environment, improved the service life of screw, guaranteed the firmness of product.

Description

Technical Field

[0001] This utility model relates to the field of plastic shell assembly technology, specifically a plastic shell with concealed screw assembly. Background Technology

[0002] Plastic housings are widely used in electronic products, home appliances, and other equipment due to their advantages such as light weight, low cost, and good insulation properties. Screw connections are a common and reliable assembly method for plastic housings. However, traditional screw assembly methods have significant drawbacks. Exposed screw heads not only affect the overall aesthetics of the product but may also loosen due to impacts during use, affecting product stability. Furthermore, exposed screws are susceptible to environmental corrosion, such as dust and moisture, reducing their lifespan and ultimately compromising the assembly strength of the plastic housing.

[0003] To address the aforementioned issues, there is an urgent need for innovative design based on the existing plastic housing with concealed screw assembly. Utility Model Content

[0004] The purpose of this invention is to provide a plastic housing with concealed screw assembly to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic shell with concealed screw assembly, comprising a first shell, the top of the first shell and the bottom of a second shell being fitted together, and a sealing mechanism being provided at the connection between the first shell and the second shell; a first hollow rod being fixed to the side of the bottom of the first shell, the upper end of the first hollow rod being fitted together with the lower end of the second hollow rod, and a positioning mechanism being provided at the connection between the first hollow rod and the second hollow rod; the upper end of the second hollow rod being fixedly connected to the side of the top of the second shell; a groove being provided on the side of the top of the second shell, and a through hole being provided at the center of the bottom of the groove; a screw being slidably installed through the through hole, and the screw being threadedly connected to both the first hollow rod and the second hollow rod, with the upper end of the screw engaging inside the groove; and a sealing mechanism being provided inside the groove.

[0006] Preferably, the positioning mechanism includes a positioning block, a positioning block is fixed to the top side of the first hollow rod, and a positioning groove is provided on the bottom side of the second hollow rod, wherein the positioning block and the positioning groove are engaged and connected.

[0007] Preferably, there are two positioning blocks and two positioning slots, and the positioning blocks and positioning slots are symmetrically distributed about the central axis of the first hollow rod.

[0008] Preferably, the sealing mechanism includes a rubber airbag, the rubber airbag is movably disposed inside the groove, a sealing plug is attached to the top of the rubber airbag, the sealing plug is threadedly connected to the groove, and a second screw groove is formed on the top of the sealing plug.

[0009] Preferably, the sealing mechanism includes a first annular groove, the top of the first housing has a first annular groove, the bottom of the second housing has a second annular groove, the top of the rubber sealing ring is engaged inside the second annular groove, and the bottom of the rubber sealing ring is engaged with the first annular groove.

[0010] Preferably, the top of the screw has a first screw groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The plastic shell of the concealed screw assembly is equipped with a positioning mechanism. When the positioning block and the positioning groove are engaged, the first shell and the second shell will not move or misalign, thus facilitating the installation of screws on the first hollow rod and the second hollow rod. The screw head is hidden inside the groove, which will not affect the overall aesthetics of the product and will not cause the screw to loosen due to collision. A sealing mechanism is provided. By rotating the sealing plug with a wrench, the rubber airbag can be squeezed, which increases the sealing performance between the sealing plug and the groove, playing a waterproof role, avoiding the screw from being affected by the external environment, improving the service life of the screw, and ensuring the firmness of the product. Attached Figure Description

[0012] Figure 1 This is a top view of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the first and second shells of this utility model;

[0014] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0015] Figure 4 This is a schematic diagram of the rubber sealing ring structure of this utility model;

[0016] Figure 5 This is a schematic diagram of the groove and through hole structure of this utility model;

[0017] Figure 6 This is a schematic diagram of the screw mounting structure of this utility model;

[0018] Figure 7 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 8 This utility model Figure 7 Enlarged structural diagram at point B;

[0020] Figure 9 This is a schematic diagram of the rubber airbag and screw structure of this utility model.

[0021] In the figure: 1. First housing; 2. Second housing; 3. First hollow rod; 4. Second hollow rod; 5. Groove; 6. Through hole; 7. Screw; 8. First screw groove; 9. Rubber airbag; 10. Sealing plug; 11. Second screw groove; 12. Positioning block; 13. Positioning groove; 14. First annular groove; 15. Second annular groove; 16. Rubber sealing ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3 This utility model provides a technical solution: a plastic shell with concealed screw assembly, including a first shell 1, the top of the first shell 1 and the bottom of the second shell 2 are fitted together, and a sealing mechanism is provided at the connection between the first shell 1 and the second shell 2. A first hollow rod 3 is fixed to the side of the bottom inside the first shell 1. The upper end of the first hollow rod 3 is fitted together with the lower end of the second hollow rod 4, and a positioning mechanism is provided at the connection between the first hollow rod 3 and the second hollow rod 4. The upper end of the second hollow rod 4 is fixedly connected to the side of the top inside the second shell 2. A groove 5 is opened on the side of the top of the second shell 2. A through hole 6 is opened at the center of the bottom of the groove 5. A screw 7 is slidably installed through the through hole 6. The screw 7 is threadedly connected to the first hollow rod 3 and the second hollow rod 4. The upper end of the screw 7 is engaged inside the groove 5. A sealing mechanism is provided inside the groove 5.

[0024] The positioning mechanism includes a positioning block 12. The positioning block 12 is fixed to the top side of the first hollow rod 3, and a positioning groove 13 is provided on the bottom side of the second hollow rod 4. The positioning block 12 and the positioning groove 13 are engaged and connected. There are two positioning blocks 12 and two positioning grooves 13. The positioning blocks 12 and the positioning grooves 13 are symmetrically distributed about the central axis of the first hollow rod 3. When the positioning blocks 12 and the positioning grooves 13 are engaged, the first housing 1 and the second housing 2 will not move, which makes it convenient to install screws 7 on the first hollow rod 3 and the second hollow rod 4.

[0025] The sealing mechanism includes a rubber airbag 9, which is movably disposed inside the groove 5. A sealing plug 10 is attached to the top of the rubber airbag 9 and is threadedly connected to the groove 5. A second screw groove 11 is provided on the top of the sealing plug 10. By inserting the end of a wrench into the second screw groove 11, the sealing plug 10 can be rotated, disassembled, and installed. During installation, the sealing plug 10 can compress the rubber airbag 9, increasing the sealing between the sealing plug 10 and the groove 5 and thus providing a waterproof function.

[0026] The sealing mechanism includes a first annular groove 14. The first annular groove 14 is provided on the top of the first housing 1, and a second annular groove 15 is provided on the bottom of the second housing 2. The top of the rubber sealing ring 16 is engaged inside the second annular groove 15, and the bottom of the rubber sealing ring 16 is engaged with the first annular groove 14, which increases the sealing at the connection between the first housing 1 and the second housing 2 and plays a waterproof role.

[0027] The top of the screw 7 has a first screw groove 8. The end of the wrench is inserted into the first screw groove 8, so that the screw 7 can be rotated to remove and install.

[0028] Working principle: When using the concealed screw assembly method for the plastic housing, firstly, the bottom of the rubber sealing ring 16 is installed inside the first annular groove 14. Then, the second housing 2 is lifted so that the second annular groove 15 at the bottom of the second housing 2 engages with the top of the rubber sealing ring 16. At this time, the positioning groove 13 at the lower end of the second hollow rod 4 engages with the positioning block 12 at the upper end of the first hollow rod 3, preventing movement between the first housing 1 and the second housing 2 and avoiding misalignment between the first hollow rod 3 and the second hollow rod 4. Then, the lower end of the screw 7 is passed through the through hole 6. Next, the screw 7 is rotated with a wrench so that the screw 7 is threaded together with the first hollow rod 3 and the second hollow rod 4, completing the fixation between the first housing 1 and the second housing 2. Then, the sealing plug 10 is rotated with a wrench so that the sealing plug 10 is threaded into the groove 5. The sealing plug 10 causes the rubber airbag 9 to be squeezed and deformed, thereby completing the assembly between the first housing 1 and the second housing 2.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plastic housing with concealed screw assembly, comprising a first housing (1), characterized in that: The top of the first housing (1) is in contact with the bottom of the second housing (2), and a sealing mechanism is provided at the connection between the first housing (1) and the second housing (2). A first hollow rod (3) is fixed to the side of the bottom of the first housing (1). The upper end of the first hollow rod (3) is in contact with the lower end of the second hollow rod (4), and a positioning mechanism is provided at the connection between the first hollow rod (3) and the second hollow rod (4). The upper end of the second hollow rod (4) is fixedly connected to the side of the top of the second housing (2). A groove (5) is provided on the side of the top of the second housing (2). A through hole (6) is provided at the center of the bottom of the groove (5). A screw (7) is slidably installed through the through hole (6). The screw (7) is threadedly connected to the first hollow rod (3) and the second hollow rod (4). The upper end of the screw (7) is engaged inside the groove (5). A sealing mechanism is provided inside the groove (5).

2. The plastic housing with concealed screw assembly according to claim 1, characterized in that: The positioning mechanism includes a positioning block (12). The positioning block (12) is fixed on the top side of the first hollow rod (3), and a positioning groove (13) is opened on the bottom side of the second hollow rod (4). The positioning block (12) and the positioning groove (13) are engaged and connected.

3. The snap-on plastic shell of claim 2, wherein: Two positioning blocks (12) and two positioning slots (13) are provided, and the positioning blocks (12) and two positioning slots (13) are symmetrically distributed about the central axis of the first hollow rod (3).

4. The snap-on plastic shell of claim 1 wherein: The sealing mechanism includes a rubber airbag (9), the rubber airbag (9) is movably disposed inside the groove (5), a sealing plug (10) is attached to the top of the rubber airbag (9), the sealing plug (10) is threadedly connected to the groove (5), and a second screw groove (11) is provided on the top of the sealing plug (10).

5. The snap-on plastic shell of claim 1 wherein: The sealing mechanism includes a first annular groove (14), the top of the first housing (1) is provided with the first annular groove (14), the bottom of the second housing (2) is provided with a second annular groove (15), the top of the second annular groove (15) is engaged inside the second annular groove (15), and the bottom of the rubber sealing ring (16) is engaged and connected with the first annular groove (14).

6. The snap-on plastic shell of claim 1 wherein: The screw (7) has a first groove (8) on its top.

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