USB power strip

Abstract

The USB power strip comprises an upper shell and a bottom cover, the surface of the upper shell is provided with a plurality of groups of plugging ports, a plurality of groups of fixing frames aligned with the plugging ports are fixed in the upper shell, the two fixing frames in the same group are relatively parallel, and hollow grooves communicated with the plugging ports are formed in the fixing frames; the fixing frame further comprises a null line copper sheet and a live wire copper sheet, the fixing frame is provided with an inserting groove in the direction perpendicular to the slotting direction of the hollow groove, the null line copper sheet and the live wire copper sheet are connected with the two fixing frames in the same group in an inserting mode through the inserting groove, connecting pieces located in the hollow groove are installed on the null line copper sheet and the live wire copper sheet, and positioning ribs are further fixed to the side wall of the hollow groove. In addition, the connecting piece abuts against the positioning rib, the null line copper sheet and the live wire copper sheet are stably fixed in the fixing frame, the copper sheets are prevented from loosening or disengaging due to plugging of the plug or external force, the positioning rib provides a strong mechanical fixing effect, and the null line copper sheet or the live wire copper sheet is further prevented from displacement or loosening in the using process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of a power strip, in particular to a USB power strip. BACKGROUND

[0002] A power strip (i.e. socket wiring row) is a common electrical connection device, widely used in households, industries and other fields. The traditional power strip usually includes an upper shell, a bottom cover and internal wiring copper sheets (including zero line copper sheets and fire line copper sheets). During the use of the power strip, the zero line copper sheets and the fire line copper sheets are prone to loosen or even detach due to the frequent plugging and unplugging of the plug or external force, resulting in poor contact or safety hazards.

[0003] In the prior art, the wiring copper sheets of the power strip are usually fixed by screws or buckle structures, but these fixing methods are prone to loosen the copper sheets due to factors such as vibration and plugging force during long-term use, affecting the stability and service life of the power strip. In addition, the traditional power strip structure is relatively cumbersome during installation and disassembly, and lacks effective positioning and limiting structures, resulting in insufficient overall stability of the power strip. CONTENT OF THE UTILITY MODEL

[0004] In order to facilitate the limiting of the zero line copper sheets and the fire line copper sheets, a USB power strip is provided.

[0005] The above application purpose of the present application is achieved by the following technical scheme:

[0006] A USB power strip includes an upper shell and a bottom cover, the surface of the upper shell is provided with a plurality of plug-in interfaces, and the upper shell is fixed with a plurality of fixed frames aligned with the plug-in interfaces, the two fixed frames of the same group are parallel to each other, and the fixed frame is provided with a hollow slot communicated with the plug-in interface; it also includes zero line copper sheets and fire line copper sheets, the fixed frame is provided with a plug-in slot in the direction perpendicular to the hollow slot, the zero line copper sheets and the fire line copper sheets are inserted into the two fixed frames of the same group through the plug-in slot, the connecting pieces located in the hollow slot are installed on the zero line copper sheets and the fire line copper sheets, and the positioning ribs are fixed on the side wall of the hollow slot, and the connecting pieces are in abutment with the positioning ribs.

[0007] By adopting the above technical scheme, the fixed frames aligned with the plug-in interfaces are installed in the upper shell, the zero line copper sheets and the fire line copper sheets are inserted into the fixed frames, and the connecting pieces are fixed on the zero line copper sheets and the fire line copper sheets, and the connecting pieces are in abutment with the positioning ribs, without the need for complex screw fixing or buckle operation, simplifying the installation process, and the zero line copper sheets and the fire line copper sheets are stably fixed inside the fixed frames, avoiding the looseness or detachment of the copper sheets due to the plugging and unplugging of the plug or external force, and the positioning ribs provide strong mechanical fixing effect, further preventing the zero line copper sheets or the fire line copper sheets from shifting or loosening during use.

[0008] Optionally, the connecting piece comprises two opposite parallel connecting pieces, and the two connecting pieces are raised on the side opposite to each other.

[0009] By adopting the above technical scheme, the two connecting pieces are raised on the side opposite to each other, which can provide additional mechanical clamping force, prevent the displacement of the zero line or live line copper sheet in the horizontal or vertical direction inside the cord board, and effectively prevent the zero line or live line copper sheet from loosening or separating due to vibration, plugging force or external force, thereby further improving the stability of the cord board.

[0010] Optionally, the connecting pieces near the side wall of the upper shell are provided with limiting protrusions.

[0011] By adopting the above technical scheme, the abutting force of the connecting piece and the plug is increased during the use of the cord board, thereby ensuring that the cord board can stably provide electrical connection.

[0012] Optionally, the bottom cover is provided with a baffle around the periphery, the upper shell is fixed with a clamping plate on the inner side wall around the periphery, the end of the clamping plate towards the bottom cover is provided with a clamping groove, and the baffle is inserted into the clamping groove and clamped with the clamping plate.

[0013] By adopting the above technical scheme, the relative position between the bottom cover and the upper shell can be effectively fixed, preventing the loosening or separation of the bottom cover and the upper shell due to vibration, external force or plug plugging, further enhancing the connection strength between the bottom cover and the upper shell, avoiding the internal deformation caused by the stress of the cord board, and ensuring the stability of the overall structure of the cord board.

[0014] Optionally, the upper shell is fixed with a first inserting ring, the bottom cover is fixed with a second inserting ring, and the first inserting ring and the second inserting ring are both fixed with an inserting piece.

[0015] By adopting the above technical scheme, the first inserting ring and the second inserting ring are used to limit the movement of the electric wire, and the structure design of the inserting ring and the inserting piece can effectively limit the movement range of the electric wire, and the electric wire is clamped and fixed by the inserting piece, without using screws. This design simplifies the installation and fixing steps of the electric wire and improves the assembly efficiency of the cord board.

[0016] Optionally, the bottom cover is fixed with an elastic reset member aligned with the fixed frame, the elastic reset member comprises a base and a protection plate slidably arranged in the base, a vertical reset spring is arranged between the protection plate and the base, and the end of the protection plate opposite to the base is inserted into the hollow groove.

[0017] By adopting the above technical scheme, the protective plate of the elastic reset member is lowered when the plug is inserted, allowing the plug to enter the hollow groove; after the plug is pulled out, the protective plate is popped up under the action of the reset spring, reinserting into the hollow groove, effectively preventing dust, moisture and other external impurities from entering the hollow groove when the plug interface of the power strip is not in use, avoiding the problem of poor contact or short circuit caused by impurity accumulation

[0018] Optionally, a gap is left between the outer periphery of the protective plate and the two connecting pieces.

[0019] By adopting the above technical scheme, it is ensured that the protective plate can move smoothly when the plug is inserted and pulled out, avoiding jamming or movement obstruction caused by contacting the connecting pieces, and improving the use experience of the power strip.

[0020] Optionally, a linkage box parallel to the base is further fixed on the bottom cover, a vertical stand is installed at the bottom of the linkage box, a linkage spring is installed on the inner wall of the linkage box on the side of the stand away from the elastic reset member, a pressing rod extending out of the linkage box is fixed on the side of the stand towards the elastic reset member, a protruding plate is fixed on the side of the protective plate towards the linkage box, and the protruding plate is clamped with the pressing rod.

[0021] By adopting the above technical scheme, when the plug is inserted, the protruding plate on the protective plate is clamped with the pressing rod, reducing the pressing force of the protective plate on the plug, avoiding the plug from being accidentally popped out due to the elastic potential energy of the reset spring, and ensuring that the plug can be stably inserted and kept in the hollow groove.

[0022] Optionally, the end of the pressing rod is inclinedly arranged from the upper shell towards the bottom cover.

[0023] By adopting the above technical scheme, after the pressing rod is inclinedly arranged, the friction force and mechanical stress between the pressing rod and the protruding plate are reduced, the pressing rod and the protective plate are protected from wear caused by vertical contact, and the service life of the power strip is prolonged.

[0024] Optionally, a vertical linkage rod is installed in the linkage box, one end of the linkage rod penetrates to the surface of the upper shell, the other end abuts against the upper end of the stand, and the end is inclinedly arranged from the stand towards the elastic reset member.

[0025] By adopting the above technical scheme, after the linkage rod is pressed, the linkage rod is lowered and moves the stand through the linkage member, so that the pressing rod and the protruding plate are disengaged from clamping, the restriction on the protective plate is removed, and the user can easily press to control the opening of the protective plate, improving the ease of use and operation experience of the power strip.

[0026] In summary, the present application has at least the following beneficial effects:

[0027] 1. The zero line copper sheet and the fire line copper sheet are limited in the hollow groove by the fixed frame, and are limited by the positioning ribs, so as to ensure the stable connection between the plug and the power strip, and prevent the zero line copper sheet or the fire line copper sheet from being displaced or loosened during use.

[0028] 2. The introduction of the elastic reset member and the linkage rod not only prevents impurities from entering the inside of the power strip, but also improves the usability and operation experience of the power strip. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a USB power strip;

[0030] Figure 2 It is a structural schematic diagram of an upper shell;

[0031] Figure 3 It is Figure 2 It is a partial enlarged view at A;

[0032] Figure 4 It is a structural schematic diagram of a bottom cover;

[0033] Figure 5 It is a sectional view of a USB power strip;

[0034] Figure 6 It is a sectional view of a USB power strip in Example Two;

[0035] Figure 7 It is Figure 6 It is a partial enlarged view at B.

[0036] Reference signs: 1, upper shell; 11, plug interface; 12, fixed frame; 121, hollow groove; 122, plug groove; 123, positioning rib; 13, zero line copper sheet; 14, fire line copper sheet; 15, ground line copper sheet; 151, ground line hole; 16, connecting piece; 161, connecting sheet; 1611, limiting protrusion; 17, clamping plate; 171, clamping groove; 18, first plug ring; 2, bottom cover; 21, baffle; 22, second plug ring; 23, circuit board; 24, USB plug column; 3, plug sheet; 4, elastic reset member; 41, base; 42, protection plate; 43, reset spring; 44, protruding plate; 5, linkage box; 51, vertical plate; 52, pressing rod; 53, linkage spring; 54, linkage rod. DETAILED DESCRIPTION

[0037] The following will be further described in detail in combination with the drawings of the specification:

[0038] Example One

[0039] As shown in the accompanying drawings Figure 1 and the accompanying drawings Figure 2 A USB power strip includes an upper shell 1 and a bottom cover 2.

[0040] The surface of the upper shell 1 is provided with a plurality of groups of plug interfaces 11 for connecting different electrical plug; the upper shell 1 is fixed with a plurality of groups of fixed frames 12 corresponding to the plug interfaces 11, the two fixed frames 12 in the same group are opposite and parallel, the fixed frame 12 is provided with a hollow slot 121 communicating with the plug interface 11, the shape of the hollow slot 121 matches the structure of the plug, ensuring that the plug can be inserted into the hollow slot 121 through the plug interface 11.

[0041] The upper shell 1 is also provided with a zero copper sheet 13, a live copper sheet 14 and a ground copper sheet 15, the ground copper sheet 15 is located between the two fixed frames 12 in the same group, the ground copper sheet 15 is provided with a ground hole 151 communicating with the plug interface 11, facilitating the plug connection, the fixed frame 12 is provided with a plug slot 122 on both sides along the direction perpendicular to the hollow slot 121, and the zero copper sheet 13 and the live copper sheet 14 are plugged into the fixed frame 12 through the plug slot 122.

[0042] As shown in the accompanying drawings Figure 2 and the accompanying drawings Figure 3 The zero copper sheet 13 and the live copper sheet 14 are provided with a connecting piece 16 located in the hollow slot 121, the connecting piece 16 includes two opposite and parallel connecting pieces 161, the end portions of the two connecting pieces 161 abut against each other, the middle portions of the two connecting pieces 161 are raised away from each other, and the connecting piece 161 close to the side wall of the upper shell 1 is further provided with a limiting protrusion 1611 facing the hollow slot 121, the limiting protrusion 1611 can increase the abutting force between the connecting piece 161 and the plug, ensuring that the power strip can stably provide electrical connection.

[0043] The side wall of the hollow slot 121 is provided with a positioning rib 123 facing the connecting piece 161, the number of the positioning rib 123 is multiple, which is four in this embodiment, and is located on the two opposite side walls of the hollow slot 121, and the four positioning ribs 123 abut against the connecting piece 161, further fixing the position of the connecting piece 16, preventing the connecting piece 16 from displacement or loosening during use.

[0044] As shown in the accompanying drawings Figure 2 and the accompanying drawings Figure 3 The bottom cover 2 and the upper shell 1 are fixedly connected by screws to form a closed power strip structure, the bottom cover 2 is provided with a baffle 21 around, and the inner side wall of the upper shell 1 is provided with a clamping plate 17 around, the end portion of the clamping plate 17 facing the bottom cover 2 is provided with a clamping slot 171, and the baffle 21 is inserted into the clamping slot 171 and clamped with the clamping plate 17, the clamping structure of the baffle 21 and the clamping plate 17 enhances the overall structural stability of the power strip, avoids the internal deformation caused by the internal stress of the power strip, and ensures the stability of the overall structure of the power strip.

[0045] The upper shell 1 has a wire installed at one end that is connected to the neutral copper piece 13, the live copper piece 14, and the ground copper piece 15. A first insert ring 18 is fixed at the end of the upper shell 1 near the wire. A second insert ring 22 parallel to the first insert ring 18 is fixed on the bottom cover 2. The first insert ring 18 and the second insert ring 22 abut against each other. Both the first insert ring 18 and the second insert ring 22 have a plug 3 fixed inside. The plug 3 is triangular in shape and is engaged with the wire. The structural design of the insert ring and the plug 3 can effectively limit the movement range of the wire and use the plug 3 to engage and fix the wire. The wire can be fixed without the use of screws, which improves the assembly efficiency of the extension cord.

[0046] As attached Figure 4 and attached Figure 5 As shown, a circuit board 23 is fixed on the end of the bottom cover 2 away from the wire. A USB plug 24 is also fixed on the end of the circuit board 23 facing the upper shell 1, and the end of the USB plug 24 extends outside the upper shell 1. The end of the circuit board 23 away from the USB plug 24 also abuts against the neutral and live wire copper plates 14, providing support for the neutral and live wire copper plates 14 while making electrical connections.

[0047] Example 2

[0048] As attached Figure 6 and attached Figure 7 As shown, this second embodiment is an improvement on the first embodiment, and the rest of the structure is the same as that of the first embodiment, so it will not be described in detail here.

[0049] An elastic reset member 4, aligned with the fixed frame 12, is fixed on the bottom cover 2. The elastic reset member 4 includes a base 41 and a protective plate 42 slidably disposed in the base 41. A reset spring 43 is installed between the protective plate 42 and the base 41. The end of the protective plate 42 facing away from the base 41 is fitted into the hollow groove 121. A gap is left between the outer periphery of the protective plate 42 and the two connecting pieces 161 to avoid jamming or obstruction of movement due to contact with the connecting pieces 161.

[0050] When the plug is inserted into the socket 11 and enters the hollow groove 121, the plug presses against the protective plate 42 and moves downward. When the plug is no longer inserted into the hollow groove 121, the protective plate 42 is lifted by the elastic potential energy compressed by the return spring 43, and then the protective plate 42 fits into the hollow groove 121, preventing external impurities from entering the hollow groove 121 and accumulating, which would affect the use of the extension cord.

[0051] The bottom cover 2 is further fixed with a linkage box 5, a vertical stand 51 is installed at the bottom of the linkage box 5, a linkage spring 53 connected with the inner wall of the linkage box 5 is fixed on the side of the stand 51 away from the elastic return member 4, a pressing rod 52 extending out of the linkage box 5 is fixed on the side of the stand 51 towards the elastic return member 4, and the end of the pressing rod 52 is obliquely arranged from the upper shell 1 towards the bottom cover 2, and the side of the protection plate 42 towards the linkage box 5 is fixed with a convex plate 44, and the convex plate 44 is clamped with the pressing rod 52.

[0052] A vertical linkage rod 53 is further installed in the linkage box 5, one end of the linkage rod 53 penetrates to the surface of the upper shell 1, the other end abuts with the upper end of the stand 51, and the end is obliquely arranged from the stand 51 towards the elastic return member 4.

[0053] After pressing the upper end of the linkage rod 53, the linkage rod 53 moves downward to drive the stand 51 to move and compress the linkage spring 53, so that the pressing rod 52 is disengaged from the clamping of the convex plate 44, the clamping of the protection plate 42 is released, and the user can easily press the opening of the control protection plate 42, which improves the ease of use and operation experience of the extension socket.

[0054] Working principle

[0055] When the plug needs to be inserted, the plug is inserted into the hollow slot 121 through the plug interface 11, the plug abuts and contacts the zero copper sheet 13, the live copper sheet 14 and the ground copper sheet 15 respectively, and the connecting sheet 161 abuts with the plug, at the same time, the plug drives the protection plate 42 to move downward, the reset spring 43 at the lower end of the protection plate 42 is compressed, the convex plate 44 at the side of the protection plate 42 is clamped with the pressing rod 52, thereby avoiding the protection plate 42 from ejecting the plug from the hollow slot 121.

[0056] When the plug is pulled out, the plug is pulled out from the hollow slot 121 and the plug interface 11 in turn, and then the plug no longer abuts with the protection plate 42, only the linkage rod 53 needs to be pressed, the linkage rod 53 moves downward, at the same time, drives the stand 51 to move horizontally away from the elastic return member 4, the linkage spring 53 is compressed, and then the pressing rod 52 is disengaged from the clamping of the convex plate 44, the elastic potential energy stored by the reset spring 43 is released, the protection plate 42 is ejected, and the protection plate 42 fills in the hollow slot 121 to protect the extension socket.

[0057] The specific embodiment is only an explanation of the application, which is not a limitation of the application, and those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as it is within the scope claimed by the application, it is protected by the patent law.

Claims

1. A USB extension board comprising an upper shell (1) and a bottom cover (2), a plurality of groups of plug-in interfaces (11) are arranged on the surface of the upper shell (1), characterized in that, The upper shell (1) is fixed with multiple groups of fixed frames (12) aligned with the plug-in interfaces (11), the two fixed frames (12) in the same group are opposite and parallel, the fixed frame (12) is provided with a hollow slot (121) communicated with the plug-in interface (11), further comprising a zero copper sheet (13) and a live copper sheet (14), the fixed frame (12) is provided with a plug-in slot (122) in the direction perpendicular to the hollow slot (121), the zero copper sheet (13) and the live copper sheet (14) are inserted into the two fixed frames (12) in the same group through the plug-in slot (122), the zero copper sheet (13) and the live copper sheet (14) are provided with a connecting piece (16) located in the hollow slot (121), the side wall of the hollow slot (121) is further fixed with a positioning rib (123), and the connecting piece (16) is in abutment with the positioning rib (123).

2. The USB power strip of claim 1, wherein, The connecting piece (16) comprises two opposite and parallel connecting pieces (161), and the two connecting pieces (161) are raised on the sides opposite to each other.

3. The USB power strip of claim 2, wherein, The connecting pieces (161) near the side wall of the upper shell (1) are provided with limiting protrusions (1611).

4. The USB power strip of claim 1, wherein, The bottom cover (2) is provided with a baffle (21) around, the inner side wall of the upper shell (1) is fixed with a clamping plate (17), the end of the clamping plate (17) towards the bottom cover (2) is provided with a clamping slot (171), and the baffle (21) is inserted into the clamping slot (171) and clamped with the clamping plate (17).

5. The USB power strip of claim 1, wherein, The upper shell (1) is fixed with a first plug-in ring (18), the bottom cover (2) is fixed with a second plug-in ring (22), and the first plug-in ring (18) and the second plug-in ring (22) are both fixed with a plug-in sheet (3).

6. The USB power strip of claim 2, wherein, The bottom cover (2) is fixed with an elastic reset piece (4) aligned with the fixed frame (12), the elastic reset piece (4) comprises a base (41) and a protection plate (42) slidably arranged in the base (41), a vertical reset spring (43) is arranged between the protection plate (42) and the base (41), and one end of the protection plate (42) away from the base (41) is inserted into the hollow slot (121).

7. The USB power strip of claim 6, wherein, The outer periphery of the protection plate (42) and the two connecting pieces (161) are left with a gap.

8. The USB power strip of claim 6, wherein, The bottom cover (2) is further fixed with a linkage box (5) opposite and parallel to the base (41), the bottom of the linkage box (5) is provided with a vertical stand plate (51), a linkage spring (53) is arranged between the side of the stand plate (51) away from the elastic reset piece and the inner wall of the linkage box, a pressing rod (52) extending out of the linkage box (5) is fixed on the side of the stand plate (51) towards the elastic reset piece (4), a convex plate (44) is fixed on the side of the protection plate (42) towards the linkage box (5), and the convex plate (44) is clamped with the pressing rod (52).

9. The USB power strip of claim 8, wherein, The end of the pressing rod (52) is inclined from the upper shell (1) towards the bottom cover (2).

10. The USB power strip of claim 8, wherein, The linkage box (5) is internally provided with a vertical linkage rod (54), one end of the linkage rod (54) penetrates to the surface of the upper shell (1), the other end abuts against the upper end of the vertical plate (51), and the end portion is obliquely arranged from the vertical plate (51) to the direction of the elastic reset member (4).

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