Power plug inner frame

Abstract

The utility model discloses a power plug inner frame, which comprises a base and two pins, the base is provided with two mounting holes in one-to-one correspondence with the two pins, the lower ends of the pins penetrate through the corresponding mounting holes, and the upper ends of the pins are provided with wire slots for inserting wires. The upper end part of the pin and the wire slot are in a flat mouth shape, a fastener is arranged on the upper end surface of the base, and the fastener abuts against the outer side surface of the pin so as to prevent the wire slot from being opened outwards; the device has the advantages of being good in stability and beneficial to prolonging the service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of plugs, in particular to an inner frame of a power plug. Background Art

[0002] The inner frame of a power plug includes a base and pins mounted on the base. There are generally two or three pins. One end of the pin passes through the base and is used to connect to an external power outlet. The other end of the pin is provided with a through-hole, which is connected to the wire through the through-hole. For example, a three-pin solid plug inner frame disclosed in application number CN202322481361.X includes a base and three pins fixed to the base. The three pins are parallel and extend through the base from top to bottom. The upper end of each pin is provided with a wiring hole. One side of the base is a plane with a slot connected to the upper end face. A connector is mounted in the slot. The upper end of the connector extends upward through the base. The connector is provided with at least one through-hole. This technical solution uses external pressure to squeeze the upper end of the pin into which the input wire is inserted, causing it to deform, thereby connecting the input wire to the pin. No other auxiliary connecting materials are required for connection, simplifying the connection process, improving connection efficiency, and reducing costs.

[0003] However, this technical solution also has some potential drawbacks. Since the pins rely solely on deformation to secure the wire, the connection between the pins and the wire is not very secure and may become loose or lose contact over time. This connection method is difficult to maintain long-term stability due to repeated plugging and unplugging, vibration, and external impact during use, so there is room for improvement. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an inner frame of a power plug, which has good stability and helps to prolong the service life.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: an inner frame of a power plug, including a base and two pins, the base is provided with two mounting holes corresponding to the two pins, the lower ends of the pins are penetrated by the corresponding mounting holes, the upper ends of the pins are provided with wire slots for inserting wires, the upper ends of the pins and the wire slots are both flat-mouthed, and a fastener is provided on the upper end surface of the base, which abuts against the outer side surfaces of the pins to prevent the wire slots from opening outward.

[0006] Preferably, a base is fixedly provided on the upper end surface of the base, and the fastener includes a connecting seat and two first limit blocks, the connecting seat is detachably connected to the base, the first limit block is connected to the connecting seat through a connecting rod, and a first limit groove is provided on one side of the first limit block, the first limit groove passes through the upper and lower end surfaces of the first limit block, the two first limit grooves correspond one-to-one to the two pins, and the upper ends of some of the pins extend into the corresponding first limit grooves and abut against the inner walls of the first limit grooves.

[0007] Preferably, a screw hole is provided on the upper end surface of the base, and a through hole and a bolt are provided on the connecting seat. The through hole and the screw hole are located on the same axis, and the bolt passes through the through hole and is threadedly connected to the screw hole.

[0008] Preferably, a positioning groove is provided on the upper end surface of the base, the screw hole is located at the bottom of the positioning groove, and a positioning ring surrounding the through hole is fixedly provided on the lower end surface of the connecting seat, the positioning ring extends into the positioning groove, and the outer side surface of the positioning ring contacts the inner wall of the positioning groove.

[0009] Preferably, the lower end surface of the positioning ring is provided with an inclined guide surface sloping from the inside to the outside and upward.

[0010] Preferably, a second limiting block is detachably connected to one side of the first limiting block, and a second limiting groove is provided on the side of the second limiting block. The second limiting groove passes through the upper and lower end surfaces of the second limiting block, and the second limiting groove cooperates with the first limiting groove to form a strip hole, and the upper end of the pin is passed through the strip hole.

[0011] Preferably, two dovetail grooves are provided on one side of the first limit block, and the two dovetail grooves are symmetrically distributed on both sides of the first limit groove. The upper ends of the dovetail grooves pass through the upper end surface of the first limit block, and two dovetail blocks are fixedly provided on the side of the second limit block. The two dovetail blocks correspond one-to-one to the two dovetail grooves and are plugged into each other.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] 1. By adding fasteners, the pins can be mechanically fixed to prevent the wire slot at the upper end of the pins from opening outward, and the tightness of the connection between the pins and the wire is enhanced, reducing the poor contact caused by loose or deformed pins. Ultimately, it can improve the connection stability of the power plug during long-term use and help extend its service life;

[0014] 2. By adding fasteners, the connection between the pins and the wires is more stable, which helps reduce safety hazards. Especially in high-power electrical appliances, stable electrical connections can reduce the risk of overheating, short circuit or fire caused by poor contact;

[0015] 3. The setting of the fasteners can also improve the stability of the connection between the pins and the base, reduce the risk of bending damage to the pins, and have better reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0017] Figure 2 Schematic diagram of the explosion structure of the utility model Figure 1 ;

[0018] Figure 3 This is a schematic diagram of the local structure of the utility model Figure 1 ;

[0019] Figure 4 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0020] Figure 5 Schematic diagram of the explosion structure of the utility model Figure 2 ;

[0021] Figure 6 This is a schematic diagram of the local structure of the utility model Figure 2 ;

[0022] Figure 7 This is a schematic structural diagram of the second limiting block in the present utility model.

[0023] In the figure: 1. Base; 11. Mounting hole; 12. Base; 121. Screw hole; 122. Positioning slot; 2. Pin; 21. Wire insertion slot; 3. Fastener; 31. Connecting seat; 311. Through hole; 312. Bolt; 313. Positioning ring; 32. First limit block; 321. First limit slot; 322. Dovetail slot; 33. Connecting rod; 34. Second limit block; 341. Second limit slot; 342. Dovetail block. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on 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.

[0026] Example 1: Figure 1 and Figure 2 As shown, a power plug inner frame includes a base 1 and two pins 2. The base 1 is provided with two mounting holes 11 corresponding to the two pins 2. The lower ends of the pins 2 are penetrated by the corresponding mounting holes 11. The upper ends of the pins 2 are provided with wire slots 21 for inserting wires. The upper ends of the pins 2 and the wire slots 21 are both flat-mouthed. A fastener 3 is provided on the upper end surface of the base 1. The fastener 3 abuts against the outer side surfaces of the upper ends of the two pins 2 to prevent the wire slots 21 from opening outward.

[0027] It should be noted that initially, the upper end of the pin 2 and the wire slot 21 are both circular. After the wire is inserted, external pressure is used to deform the upper end of the pin 2 and the wire slot 21 to squeeze the wire to complete the electrical connection, and then the fastener 3 is assembled. The fastener 3 is in contact with the outer side surfaces of the two pins 2 to prevent the wire slot 21 from opening outward.

[0028] Example 2: Figure 1 and Figure 2 As shown, the rest of the parts are the same as those in Example 1, except that a base 12 is fixedly provided on the upper end surface of the base 1, the fastener 3 includes a connecting seat 31 and two first limit blocks 32, the connecting seat 31 is detachably connected to the base 12, the first limit block 32 is connected to the connecting seat 31 through a connecting rod 33, a first limit groove 321 is provided on one side of the first limit block 32, the first limit groove 321 passes through the upper and lower end surfaces of the first limit block 32, the two first limit grooves 321 correspond one-to-one to the two pins 2, the upper ends of some pins 2 extend into the corresponding first limit grooves 321 and abut against the inner wall of the first limit groove 321, and the first limit grooves 321 limit the pins 2 in contact with them from opening outward.

[0029] In this embodiment, a screw hole 121 is provided on the upper end surface of the base 12, and a through hole 311 and a bolt 312 are provided on the connecting seat 31. The through hole 311 and the screw hole 121 are located on the same axis. The bolt 312 passes through the through hole 311 and is threadedly connected to the screw hole 121. The structure is simple and convenient for quick assembly.

[0030] In this embodiment, the connecting seat 31 , the connecting rod 33 and the first limiting block 32 are integrally formed, and the first limiting block 32 is U-shaped.

[0031] Example 3: Figure 2 and Figure 3 As shown, the rest of the structure is the same as that of the second embodiment, except that a positioning groove 122 is provided on the upper end surface of the base 12, the screw hole 121 is located at the bottom of the positioning groove 122, and a positioning ring 313 is fixedly provided on the lower end surface of the connecting seat 31, surrounding the through hole 311. The positioning ring 313 extends into the positioning groove 122, and the outer side of the positioning ring 313 contacts the inner wall of the positioning groove 122. The positioning ring 313 cooperates with the positioning groove 122 to provide a positioning function, making it easier for workers to quickly and accurately assemble the connecting seat 31 to the base 12 and subsequently tighten the bolts 312, thereby helping to improve assembly efficiency.

[0032] In this embodiment, the lower end surface of the positioning ring 313 is provided with an inclined guide surface that is inclined from the inside to the outside and upward.

[0033] Example 4: Figures 4 to 7 As shown, the rest of the structure is the same as that of the second embodiment, except that a second limiting block 34 is detachably connected to one side of the first limiting block 32. A second limiting groove 341 is provided on the side of the second limiting block 34. The second limiting groove 341 extends through the upper and lower end surfaces of the second limiting block 34. The second limiting groove 341 cooperates with the first limiting groove 321 to form a strip-shaped hole, through which the upper end of the pin 2 is passed. By adding the second limiting block 34, the second limiting block 34 cooperates with the first limiting block 32 to fully surround the corresponding upper end of the pin 2, thereby improving the fastening effect.

[0034] In this embodiment, one side of the first limiting block 32 is provided with two dovetail grooves 322, symmetrically located on either side of the first limiting groove 321. The upper ends of the dovetail grooves 322 extend through the upper end surface of the first limiting block 32. Two dovetail blocks 342 are fixedly provided on the side of the second limiting block 34. The two dovetail blocks 342 correspond one-to-one with the two dovetail grooves 322 and engage with each other. The dovetail blocks 342 engage with the dovetail grooves 322, preventing the second limiting block 34 from easily separating from the first limiting block 32 after connection, thus providing a more stable connection.

[0035] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A power plug inner frame, comprising a base (1) and two pins (2), wherein the base (1) is provided with two mounting holes (11) corresponding to the two pins (2), the lower ends of the pins (2) are provided with the corresponding mounting holes (11), and the upper ends of the pins (2) are provided with a wire slot (21) for inserting wires, characterized in that The upper end of the plug pin (2) and the wire insertion slot (21) are both flat-mouthed, and a fastener (3) is provided on the upper end surface of the base (1). The fastener (3) abuts against the outer side surface of the plug pin (2) to prevent the wire insertion slot (21) from opening outward.

2. A power plug inner frame according to claim 1, characterized in that A base (12) is fixedly provided on the upper end surface of the base (1); the fastener (3) comprises a connecting seat (31) and two first limiting blocks (32); the connecting seat (31) is detachably connected to the base (12); the first limiting block (32) is connected to the connecting seat (31) via a connecting rod (33); a first limiting groove (321) is provided on one side of the first limiting block (32); the first limiting groove (321) passes through the upper and lower end surfaces of the first limiting block (32); the two first limiting grooves (321) correspond to the two pins (2) one by one; the upper ends of some of the pins (2) extend into the corresponding first limiting grooves (321) and abut against the inner wall of the first limiting groove (321).

3. A power plug inner frame according to claim 2, characterized in that A screw hole (121) is provided on the upper end surface of the base (12), and a through hole (311) and a bolt (312) are provided on the connecting seat (31). The through hole (311) and the screw hole (121) are located on the same axis, and the bolt (312) passes through the through hole (311) and is threadedly connected to the screw hole (121).

4. A power plug inner frame according to claim 3, characterized in that A positioning groove (122) is provided on the upper end surface of the base (12), the screw hole (121) is located at the bottom of the positioning groove (122), and a positioning ring (313) surrounding the through hole (311) is fixedly provided on the lower end surface of the connecting seat (31), the positioning ring (313) extends into the positioning groove (122), and the outer side surface of the positioning ring (313) contacts the inner wall of the positioning groove (122).

5. A power plug inner frame according to claim 4, characterized in that The lower end surface of the positioning ring (313) is provided with an inclined guide surface that is inclined from the inside outward and upward.

6. A power plug inner frame according to claim 2, characterized in that A second limiting block (34) is detachably connected to one side of the first limiting block (32); a second limiting groove (341) is provided on the side of the second limiting block (34); the second limiting groove (341) passes through the upper and lower end surfaces of the second limiting block (34); the second limiting groove (341) cooperates with the first limiting groove (321) to form a strip hole; the upper end of the pin (2) is penetrated by the strip hole.

7. A power plug inner frame according to claim 6, characterized in that Two dovetail grooves (322) are provided on one side of the first limiting block (32), and the two dovetail grooves (322) are symmetrically distributed on both sides of the first limiting groove (321). The upper ends of the dovetail grooves (322) pass through the upper end surface of the first limiting block (32). Two dovetail blocks (342) are fixedly provided on the side of the second limiting block (34), and the two dovetail blocks (342) correspond to the two dovetail grooves (322) one by one and are plugged into each other.

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