CN105896165B - Collapsible plug and its assemble method - Google Patents

Abstract

The invention relates to a foldable plug and its assembly method. The plug has a reasonable structure and is easy to assemble. It mainly includes a hollow main shaft, side wings, metal sheets, plastic sleeves and electric wires. Prevent falling off; there are protrusions on the end cover and the hollow main shaft, and there are grooves on both sides of the wing, thereby limiting the range of movement of the side wings and preventing excessive twisting and breaking of the internal wires; the main wire penetrates into the hollow main shaft, and the outer skin and the inner wall of the hollow main shaft are bonded glue together to prevent falling off; the hollow main shaft communicates with the two side wings through the hole, the live wire and the zero line pass through the hole, and are introduced into the junction groove on the side wing, and are fixed with the metal sheet by welding; the plastic sleeve raises the metal sheet The strength of the root, and it is fixed with the junction slot by adhesive; the filler is placed in the junction slot, and the wires are left on both sides of the filler, which ensures the separation of the fixed section and the movable section of the wire, and further ensures the connection between the fixed section and the movable section. After repeated folding and deformation, the wires are in good contact.

Description

Foldable plug and its assembly method

technical field

The invention relates to a plug, in particular to a foldable three-phase plug.

Background technique

Generally speaking, a plug refers to a movable joint that is connected to a device that uses electricity through a wire, and usually has a protruding rod-shaped, blade-shaped electronic contact (called a male joint); while a socket is fixed on the On equipment or building structures, there are electronic contact slots (called female connectors) with corresponding shapes. To reduce the risk of electric shock, sockets and plugs are equipped with many different safety devices. For example sockets may be designed to accept only corresponding plugs. There are also a number of devices that shield the socket when the plug is not inserted, and some are designed so that hazardous high voltage electrical connections are not exposed. Some outlets have exposed electrical contacts, but only for grounding purposes.

Since the three-phase plug has a ground wire, it can introduce the charge generated by the electrical casing into the ground, reducing the occurrence of leakage accidents and protecting the safety of personnel. Therefore, this plug is used in most electrical appliances. With the development of information technology, notebook computers and tablet computers are becoming more and more popular. Due to the needs of portability, their thickness is getting thinner and thinner. In order to take into account the structural strength and heat dissipation, the shell is made of metal alloy. In order to ensure the safety of users, The plug must choose a three-phase plug.

Generally, the main body of the host computer is placed separately in the bag of these portable devices, and the mouse, power adapter, etc. are placed in the outer bag. For the sake of safety and portability, the power adapter is generally made flat, and the mouse is also a flat wireless mouse, and the three-phase power plug is placed in it, which will make a piece of the bag bulge, which is particularly prominent. If there is extrusion, the three-phase plug will be damaged. There is greater pressure on the host, and if it is the upper surface of the notebook, it is easier to damage the display. In response to this problem, there have been many solutions to reduce the volume of the three-phase plug. First, the metal sheet can be folded in by opening a groove on the plug or the metal sheet can be designed to be retractable, but there must be other mechanical structures between the wire and the metal sheet to conduct current, and there is no guarantee that it will not generate electricity after long-term use. For problems such as virtual connection, this method is not safe for notebooks with a power of about 90 watts; second, the folding method has nothing to do with the power cord, and is too thin. This method is not only unreliable but also extremely unsafe.

Contents of the invention

The purpose of the present invention is to provide a three-phase plug with variable shape and easy to carry, which achieves the deformation effect without changing the overall volume, and ensures the original structural strength to the greatest extent.

The present invention adopts following technical scheme for realizing above-mentioned purpose of the invention:

The foldable plug provided by the present invention includes a main electric wire, a hollow main shaft, side wings and a metal sheet end connected in sequence; the side wings include a fixed part and a rotating part that can rotate around the fixed part, and the fixed part is coaxially connected with the hollow main shaft, Both the fixed part and the rotating part are equipped with wiring slots; the metal sheet end includes a metal sheet and a plastic sleeve connecting the metal sheet and the side wings; the main wire is wrapped with a ground wire, a live wire and a neutral wire, and the three wires are bundled into one strand Pass through the hollow main shaft and separate at the side wings. The side wings include two left and right sides. Two of the three wires pass through the left and right side wings respectively and connect with the metal sheet respectively.

Further, the wing is divided into two sides, the fixed parts of the two wings are hinged on the hollow main shaft, and one end of the wing is fixed to the hollow main shaft through the end cover; wherein, the position where the end of the wing contacts the end cover and the corresponding position on the end cover The position is provided with a mutually cooperating limiting mechanism, and the position where the other end of the wing contacts the hollow main shaft and the corresponding position of the hollow main shaft are provided with a mutually cooperating limiting mechanism.

Further, through holes are provided at the joints of the hollow main shaft and the rotating part, and the through holes communicate with the wiring slots, and the electric wires extend from the inner cavity of the hollow main shaft to the wiring slots on the side wings through the through holes.

Further, a groove is formed at one end of the metal sheet, and the metal sheet is clamped and fixed with a plastic sleeve through the groove, and the plastic sleeve is bonded in the wiring groove.

As a preferred method, fillers are provided in the wiring grooves of the rotating parts of the two wings, and there is room for electric wires between the wiring grooves and the fillers.

The method for assembling the foldable plug includes the following steps:

Step 1, stack the fixed parts of the two wings coaxially, insert them into the hollow main shaft, and apply adhesive to the hollow main shaft with the end cover;

Step 2: Peel off the outer sheath of the wire, pass it through the hollow main shaft, fix the live wire and the neutral wire respectively from the space margin of the filler in the wiring groove of the rotating part of the side wing; connect the ground wire from the wiring of the fixed part of the side wing out of the groove;

Step 3: Weld the metal sheet with the neutral wire and the live wire respectively, adjust the angle of the metal sheet, attach the metal sheet to the plastic sleeve, insert the entire metal sheet end into the wiring slot, and fix it with an adhesive;

Step 4: Weld the ground wire with the metal sheet, adjust the angle, bond it to the end cover, and fix the hollow main shaft and the wires inside it.

Further, a pit is formed on the tail of the hollow main shaft, the pit communicates with the interior of the hollow main shaft, and an adhesive is injected into the pit to fix the hollow main shaft and the electric wires inside.

Compared with the prior art, the present invention adopts the above technical scheme and has the following technical effects:

The foldable plug adopts two rotatable side wings, so that the relative positions of the three metal sheets of the plug can be changed according to the use conditions. It can be adjusted to the triangular shape of a common plug in the working state, and can be changed to a triangular shape in the non-working state. Another form reduces the minimum radial size, is easy to carry, and protects the display screen from excessive pressure.

The design of the whole device is reasonable. There is an anti-slip groove outside the plug, which is convenient to hold; the limit device on the side wing prevents the internal wire from being excessively twisted and broken, which is safe and reliable; the filler in the wiring groove separates the fixed section and the movable section of the wire on both sides It ensures that the wires are in good contact after being folded and deformed for many times; the whole plug is easy to install, small and easy to use, especially suitable for three-phase plugs of portable mobile devices.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing:

Fig. 1 is the structural schematic diagram when folding plug of the present invention works;

Fig. 2 is a structural schematic diagram of the foldable plug of the present invention when carried;

Fig. 3 is a structural exploded view of the foldable plug of the present invention;

Fig. 4 is the structural representation of end cap;

Fig. 5 is a schematic structural view of the hollow main shaft;

Fig. 6 is a schematic structural view of the metal sheet;

Fig. 7 is the structural representation of plastic cover;

Figure 8 is a schematic structural view of the flanks;

In the figure: 1—main wire, 2—sheath, 3—ground wire, 4—live wire, 5—neutral wire, 6—dimple, 7—hollow main shaft, 8—flank, 9—groove, 10—end cover, 11—metal sheet, 12—plastic sleeve, 13—junction groove, 14—anti-skid groove, 15—first through hole; 17—first protrusion; 20—second protrusion; 16—groove; 18—filler, 19—the second through hole.

Detailed ways

The present invention provides a foldable plug and an assembly method thereof. In order to make the object, technical solution and effect of the present invention clearer and clearer, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific implementations described here are only used to explain the present invention, not to limit the present invention.

A new type of plug provided by the present invention, as shown in Figures 1 to 8, includes a hollow main shaft 7, side wings 8, metal sheets 11 and electric wires 1, the two side wings 8 are hinged on the hollow main shaft 7, and the end cap 10 is fixed by an adhesive. Connected to the hollow main shaft 7 to fix the axial position of the side wings 8 and prevent them from falling off; both the end cover 10 and the hollow main shaft 7 have limit mechanisms, that is, protrusions 17 and 20, and the corresponding positions of the two ends of the side wings 8 are provided with mutual cooperation. The limiting mechanism is the groove 9, which limits the range of motion of the side wings 8 and prevents the internal wires from being excessively twisted and broken; the main wire 1 penetrates the hollow main shaft 7, and the outer skin 2 and the inner wall of the hollow main shaft 7 are bonded together by an adhesive. There are through holes 15 and 19 on the main shaft 7 and both side wings 8, so that the inner cavity of the hollow main shaft 7 communicates with the wiring groove 13, and the live wire 4 and the neutral wire 5 pass through the through holes 15 and 19, and are introduced into the wiring groove on the side wings 8 13, it is fixedly connected with the metal sheet 11 by welding; on the one hand, the plastic sleeve 12 fixes the metal sheet 11 through the groove on the metal sheet 11 to improve the strength of the root of the metal sheet 11; Junction strength; before the plastic sleeve 12 is bonded with the junction slot 13 adhesive, filler 18 needs to be put into the junction slot 13, and both sides of the filler 18 are left margins for the wires, which ensures the fixed section and the movement of the wires. Segment separation further ensures good wire contact after repeated folding and deformation.

As shown in the figure, first place the two wings on the same axis and insert them into the hollow main shaft; apply adhesive on the lower edge of the end cover and bond with the hollow main shaft, so that the two wings will not fall off and the movement is limited; then peel off part of the wire sheath , penetrate from the back of the hollow main shaft, and lead the zero wire and live wire into the wiring slot through the through hole, leave enough wiring margin, fill the filler into the wiring slot and fix the wire; the metal sheet and the plastic sleeve are integrated , the metal sheet needs to be processed first, and fixed to the metal sheet when the plastic sleeve is injected. After the angle of the metal sheet is fixed, insert it in; move the two wings and adjust the position of the wire. After setting the position, inject a certain amount of adhesive into the hollow main shaft pit, and connect the outer skin of the wire to the hollow main shaft; finally weld the ground wire and the corresponding metal sheet , Since the ground wire does not move during the movement, there is no need to fill the inner cavity of the hollow main shaft with fillers, and the outer edge of the plastic sleeve of the ground wire metal sheet is coated with adhesive, and bonded to the end cover to complete the entire installation process.

When using, bend down the two side wings, pinch the pits on the side wings with your hands, and insert it into the socket, as shown in Figure 1; when carrying, flatten the two sides and put it in the bag, as shown in Figure 2.

The above is only for explaining the simple implementation designed by the present invention, but the scope of protection of the present invention is not limited thereto, any changes that can be easily imagined by those skilled in the art within the technical scope disclosed in the present invention Or replacement, all should be covered within the protection scope of the present invention.

Claims (5)

1. Foldable plug, including main wires, hollow main shaft, side wings and sheet metal ends connected in sequence; it is characterized in that the side wings include a fixed part and a rotating part that can rotate around the fixed part, and the fixed part is coaxial with the hollow main shaft connection, the rotating part rotates around the fixed part along the axis of the hollow main shaft; both the fixed part and the rotating part are provided with wiring slots; the metal sheet end includes a metal sheet and a plastic sleeve connecting the metal sheet and the side wings; the main wire There are ground wires, live wires and neutral wires wrapped inside, and the three wires are bundled into one strand and pass through the hollow main shaft, and are separated at the side wings. connected to the metal sheet respectively; The connection between the hollow main shaft and the rotating part is provided with a through hole, and the through hole communicates with the wiring groove, and the electric wire extends from the inner cavity of the hollow main shaft to the wiring groove of the side wing through the through hole; a groove is opened at one end of the metal sheet , the metal sheet cooperates with the protrusion on the plastic sleeve through the groove, and the plastic sleeve is bonded in the wiring groove. 2. The foldable plug according to claim 1, wherein the side wings are divided into two sides, the fixing parts of the two sides are hinged on the hollow main shaft, and one end of the side wings is fixed to the hollow main shaft through an end cap; wherein, in The position where the wing end touches the end cap and the corresponding position on the end cap are provided with a mutually cooperating limiting mechanism, and the position where the other end of the wing contacts the hollow main shaft and the corresponding position of the hollow main shaft are provided with a cooperating limiting mechanism. 3 . The foldable plug according to claim 1 , wherein fillers are provided in the connection grooves of the rotating parts of the two wings, and there is a space margin between the connection grooves and the fillers for electric wires. 4 . 4. The method for assembling the foldable plug is characterized in that the method comprises the following steps: Step 1, stack the fixed parts of the two wings coaxially, insert them into the hollow main shaft, and apply adhesive to the hollow main shaft with the end cover; Step 2: Peel off the outer sheath of the wire, pass it through the hollow main shaft, fix the live wire and the neutral wire respectively from the space margin of the filler in the wiring groove of the rotating part of the side wing; connect the ground wire from the wiring of the fixed part of the side wing out of the groove; Step 3: Weld the metal sheet with the neutral wire and the live wire respectively, assemble the metal sheet and the plastic sleeve into the metal sheet end parts through the cooperation of the groove and the protrusion, adjust the angle of the metal sheet, put fillers into the wiring groove, and place the entire metal The chip end is inserted into the wiring groove and fixed by adhesive; Step 4: Weld the ground wire with the metal sheet, adjust the angle, bond it to the end cover, and fix the hollow main shaft and the wires inside it. 5. The method for assembling a foldable plug according to claim 4, wherein a pit is formed on the tail of the hollow main shaft, the pit communicates with the interior of the hollow main shaft, and an adhesive is injected into the pit to make the hollow The spindle is fixed to each other with the wires inside it.