An extension socket
By using a snap-fit and snap-hole connection between the upper and lower housings, combined with the locking mechanism of the screw post and screw hole in the middle, the problem of complex connections in existing power strips is solved, achieving material savings and improved production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 李德松
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-16
AI Technical Summary
Existing power strip connection methods require multiple screws, resulting in high material and labor costs, as well as occupying internal space, leading to large power strip sizes.
The upper and lower housings are connected by snaps and buckles, and locked in the middle by a screw post and screw hole, simplifying the installation process.
It saves materials and manpower, improves production efficiency, and reduces the size of the power strip.
Smart Images

Figure CN224367204U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power strip technology, and in particular to a power strip. Background Technology
[0002] Current power strips typically consist of an upper casing and a lower casing. During assembly, these two casings need to be fitted together and then secured with screws. To increase the strength of the connection, a ring of screw posts is usually installed along the side wall of the upper casing. This requires multiple screws, leading to high material costs. The time spent screwing them in also results in high labor costs, and the power strip itself occupies internal space, making it bulky. Utility Model Content
[0003] To solve the above problems, this technical solution provides a power strip.
[0004] To achieve the above objectives, the technical solution is as follows:
[0005] A power strip, including
[0006] The upper housing has a recessed cavity on its back side, and a buckle is provided along the opening of the cavity; at least one screw post is provided in the cavity;
[0007] The lower housing has snap holes and screw holes;
[0008] When the lower housing is closed with the upper housing, the buckle holes and the snap fasteners are engaged in a one-to-one correspondence; the screw holes and the screw posts are aligned.
[0009] In the type of power strip described above, the screw post is located in the middle of the cavity.
[0010] As described above, a groove is provided between the cavity opening and the back of the upper housing, recessed in the direction of the thickness of the side wall of the upper housing. The lower housing includes a body and a flange protruding along the periphery of the body and in the direction of the cavity. When the lower housing and the upper housing are closed, the groove allows the flange to be inserted.
[0011] As described above, the inner wall of the cavity is provided with a limiting rib, the limiting rib includes a limiting part protruding towards the opening of the cavity, and the main body is provided with a limiting groove. When the lower shell and the upper shell are closed, the limiting part is embedded in the limiting groove.
[0012] In the type of power strip described above, the height of the limiting part is higher than the bottom of the groove and lower than the top surface of the cavity opening, and the inner side of the flange forms the sidewall of the limiting groove.
[0013] As described above, the main body is provided with a plurality of limiting plates for insertion into the cavity, and the two limiting plates are spaced apart to form a clearance space for the limiting rib.
[0014] As described above, in a power strip, the buckle hole is provided on the limiting plate, and the buckle hole includes a first opening communicating with the outer side of the limiting plate and a second opening communicating with the front side of the lower housing.
[0015] In one type of power strip as described above, the flange spans across the buckle hole to separate the first opening and the second opening.
[0016] The power strip described above also includes a power cord, the power cord being equipped with an anti-pull connector, and a fixing post being provided on the upper housing, the anti-pull connector being sleeved on the fixing post.
[0017] As described above, the upper housing is provided with a copper busbar, and the copper busbar is provided with an upper pressing part and a lower pressing part that are recessed and offset to the upper and lower sides respectively, and a plug hole for inserting a conductive wire is formed between the upper pressing part and the lower pressing part.
[0018] The beneficial effects of this application are:
[0019] This utility model provides a power strip where the upper and lower housings are connected around their peripheries via snap-fit and snap-hole connections, and then locked in place by a single screw passed through the screw hole and tightened onto the screw post. This installation process requires only one screw, saving materials, reducing manpower, and improving production efficiency. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.
[0021] Figure 1 This is a structural schematic diagram of the present invention.
[0022] Figure 2 yes Figure 1 Rear view;
[0023] Figure 3 yes Figure 2 Sectional view at point AA;
[0024] Figure 4 yes Figure 2 Sectional view at BB. Detailed Implementation
[0025] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0026] A power strip, including
[0027] The upper housing 1 has a recessed cavity 11 on its back side, with a buckle 12 arranged along the opening of the cavity 11; at least one screw post 13 is provided in the cavity 11; the front of the upper housing has a two-pronged or three-pronged socket. In this embodiment, only one screw post is provided, but the number of screw posts can be increased as appropriate according to the size of the power strip.
[0028] The lower housing 2 has a snap hole 21 and a screw hole 22 on it;
[0029] When the lower housing 2 is closed with the upper housing 1, the buckle hole 21 and the buckle 12 are engaged in a one-to-one correspondence; the screw hole 22 corresponds to the screw post 13.
[0030] This utility model provides a power strip where the upper and lower housings are connected around their peripheries via snap-fit and snap-hole connections, and then locked in place by a single screw passed through the screw hole and tightened onto the screw post. This installation process requires only one screw, saving materials, reducing manpower, and improving production efficiency.
[0031] Furthermore, as a preferred embodiment of this solution and not a limitation, the screw post 13 is located in the middle of the cavity 11. The upper and lower housings are connected around their perimeter by snap-fit and snap-hole connections, and the middle section is connected by screws through the screw post and screw hole, resulting in a simple and reasonable structure.
[0032] Furthermore, as a preferred embodiment of this solution and not a limitation, a groove 14 is provided between the opening of the cavity 11 and the back surface of the upper housing 1, recessed in the thickness direction of the side wall of the upper housing 1. The lower housing 2 includes a body 23 and a flange 24 protruding along the periphery of the body 23 and towards the cavity 11. When the lower housing 2 is closed with the upper housing 1, the groove 14 allows the flange 24 to be inserted. The groove and the flange cooperate to provide support and limit the movement.
[0033] Furthermore, as a preferred embodiment of this solution and not a limitation, a limiting rib 15 is provided on the inner sidewall of the cavity 11. The limiting rib 15 includes a limiting portion 151 protruding towards the opening of the cavity 11, and a limiting groove 25 is recessed on the body 23. When the lower shell 2 is closed with the upper shell 1, the limiting portion 151 is embedded in the limiting groove 25. The limiting rib enhances the strength of the upper shell sidewall while supporting the lower shell.
[0034] Furthermore, as a preferred embodiment of this solution and not a limitation, the height of the limiting part 151 is higher than the bottom of the groove 14 and lower than the top surface of the opening of the cavity 11, and the inner side of the flange 24 forms the sidewall of the limiting groove 25.
[0035] Furthermore, as a preferred embodiment of this solution and not a limitation, the main body 23 is provided with a plurality of limiting plates 26 for insertion into the cavity 11. Two limiting plates 26 are spaced apart and form a clearance space 27 for making way for the limiting rib 15. The clearance space allows the limiting plates to deform elastically, facilitating the snap fastener to enter the buckle hole.
[0036] Furthermore, as a preferred embodiment of this solution and not a limitation, the buckle hole 21 is provided on the limiting plate 26. The buckle hole 21 includes a first opening 211 communicating with the outer side of the limiting plate 26, and a second opening 212 communicating with the front side of the lower housing 2. The buckle enters the buckle hole through the first opening, and the buckle can be observed through the second opening. Figure 2 The image shown is the front of the lower casing.
[0037] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the flange 24 extends across the buckle hole 21 to separate the first opening 211 and the second opening 212.
[0038] Furthermore, as a preferred embodiment of this solution and not a limitation, it also includes a power cord 3, which is provided with an anti-pull connector 31, and a fixing post 28 is provided on the upper housing 1, with the anti-pull connector 31 sleeved on the fixing post 28. This effectively prevents the power cord from being pulled out or loosened.
[0039] Furthermore, as a preferred embodiment of this solution and not a limitation, the upper housing 1 is provided with a copper busbar 4, which has an upper pressing part 41 and a lower pressing part 42 that are respectively recessed and offset to the upper and lower sides. A insertion hole 43 for inserting a conductive wire is formed between the upper pressing part 41 and the lower pressing part 42. After the conductive wire is inserted into the insertion hole, pressing the upper pressing part and the lower pressing part together can fix the conductive wire, which is convenient and quick.
[0040] The above description is only a preferred embodiment of this application and is not intended to limit the scope of implementation of this application. Any other embodiments whose principles and basic structures are the same as or similar to those of this application are within the protection scope of this application.
Claims
1. A power strip, characterized in that: include The upper housing (1) has a recessed cavity (11) on its back side, and a buckle (12) is provided along the opening of the cavity (11); at least one screw post (13) is provided in the cavity (11); The lower housing (2) is provided with a snap hole (21) and a screw hole (22); When the lower housing (2) is closed with the upper housing (1), the buckle hole (21) and the buckle (12) are engaged in a one-to-one correspondence; the screw hole (22) corresponds to the screw post (13).
2. A power strip according to claim 1, characterized in that: The screw post (13) is located in the middle of the cavity (11).
3. A power strip according to claim 1, characterized in that: The cavity (11) opening and the back of the upper shell (1) are provided with a groove (14) recessed in the thickness direction of the side wall of the upper shell (1). The lower shell (2) includes a body (23) and a flange (24) protruding along the periphery of the body (23) and in the direction of the cavity (11). When the lower shell (2) is closed with the upper shell (1), the groove (14) allows the flange (24) to be inserted.
4. A power strip according to claim 3, characterized in that: The inner wall of the cavity (11) is provided with a limiting rib (15), the limiting rib (15) includes a limiting part (151) protruding in the opening direction of the cavity (11), the body (23) is recessed with a limiting groove (25), when the lower shell (2) is closed with the upper shell (1), the limiting part (151) is embedded in the limiting groove (25).
5. A power strip according to claim 4, characterized in that: The height of the limiting part (151) is higher than the bottom of the groove (14) and lower than the top surface of the opening of the cavity (11), and the inner side of the flange (24) forms the sidewall of the limiting groove (25).
6. A power strip according to claim 4, characterized in that: The main body (23) is provided with a plurality of limiting plates (26) for insertion into the cavity (11), and two limiting plates (26) are spaced apart to form a clearance space (27) for making way for the limiting rib (15).
7. A power strip according to claim 6, characterized in that: The buckle hole (21) is provided on the limiting plate (26). The buckle hole (21) includes a first opening (211) communicating with the outer side of the limiting plate (26) and a second opening (212) communicating with the front of the lower housing (2).
8. A power strip according to claim 7, characterized in that: The flange (24) spans across the buckle hole (21) to separate the first opening (211) and the second opening (212).
9. A power strip according to claim 6, characterized in that: It also includes a power cord (3), on which an anti-pull connector (31) is provided, and a fixing post (28) is provided on the upper housing (1), and the anti-pull connector (31) is sleeved on the fixing post (28).
10. A power strip according to claim 6, characterized in that: The upper housing (1) is provided with a copper busbar (4), and the copper busbar (4) is provided with an upper pressing part (41) and a lower pressing part (42) that are recessed and offset to the upper and lower sides respectively. A plug hole (43) for inserting conductive wires is formed between the upper pressing part (41) and the lower pressing part (42).