Power plug

Abstract

The utility model belongs to the technical field of power plugs, and provides a power plug, which comprises a plug bottom plate and at least two metal pins, the plug bottom plate is provided with plugging holes for the metal pins to be plugged one by one, one end of each metal pin penetrates out of the corresponding plugging hole and overhangs on one side of the plug bottom plate, and the other end of each metal pin is provided with at least two metal pins. The metal pin comprises a hollow outer shell and a solid binding post, the outer shell comprises a plugging part and a wiring part which are connected, one end, far away from the plugging part, of the wiring part is provided with an insertion hole, and the binding post is connected in the wiring part through the insertion hole. The utility model has the advantages that: metal materials are saved through the outer shell with the hollow structure, and the conductive effect after the wire connection is ensured through the connection of the wire and the binding post with the solid structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of power connection devices, and in particular relates to a power plug. Background Art

[0002] The power plug is set at the power input end of various electrical devices such as televisions, computers, fans, etc. The power plug is used to electrically connect the electrical device to the socket end of the power supply, that is, the electrical device is electrically connected to the socket of the power supply through the power plug.

[0003] Common types of power plugs include assembled power plugs. When using assembled power plugs, the metal pins are plugged into the sockets on the plug base, and then the power cord and the wiring holes on the metal pins are connected together by screws, and then the plug cover is snapped onto the plug base to complete the connection. During use, if the metal pins of the power plug are deformed by force, only the metal pins of the plug can be replaced without causing the entire electrical device to be unusable. Existing assembled power plugs are provided with abutment plates on both sides of the upper end of the pin holes. When the plug cover is covered on the plug base, the corresponding socket holes on the plug cover will abut against the abutment plates to limit the metal pins and prevent the metal pins from moving up and down under force during use.

[0004] However, the metal pins used in the existing assembled power plugs generally adopt a solid structure, which is simple in structure and wastes materials. Utility Model Content

[0005] In order to solve one of the above technical problems, the utility model provides a power plug, which not only saves metal materials through the hollow structure of the outer shell, but also connects with the solid structure of the terminal through the wire, thereby ensuring the conductive effect after the wire is connected.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows: a power plug is provided, comprising: a plug base and at least two metal pins, the plug base is provided with plugging holes for the metal pins to be plugged in one by one, one end of the metal pin passes through the plugging hole and overhangs on one side of the plug base, the metal pin comprises a hollow outer shell and a solid terminal, the outer shell comprises a connected plugging part and a wiring part, an end of the wiring part away from the plugging part is provided with an insertion hole, and the terminal is connected to the wiring part through the insertion hole.

[0007] Through the above technical features, when in use, the solid terminal is inserted into the wiring part of the hollow outer shell, and the solid terminal is used for wiring. Therefore, the utility model saves metal materials through the hollow structure of the outer shell, and connects the solid structure terminal through the wire, thereby ensuring the conductive effect after the wire is connected.

[0008] Preferably, a first threaded hole is provided on the terminal post, the first threaded hole extends from one end of the terminal post away from the plug-in portion to one side of the plug-in portion, the first threaded hole is threadedly connected to a wiring screw, a first wiring hole is provided on one side of the wiring portion, the first wiring hole passes through one side of the wiring portion and one side of the terminal post and is connected to the first threaded hole.

[0009] Through the above technical features, when in use, the wire is inserted into the first threaded hole from the first wiring hole, and then the wiring screw is screwed in from the top of the first threaded hole to connect the wire to the solid structure of the wiring post in the wiring part, thereby completing the connection of the wire and ensuring the conductive effect after the wire is connected.

[0010] Preferably, the first wiring hole passes through the wiring post and both sides of the wiring portion.

[0011] Through the above technical features, when the wire is inserted into the first wiring hole, the wire passes through the wiring part and both sides of the terminal, ensuring that a sufficiently long wire is inserted into the first threaded hole, so that when the wiring screw is screwed in, the wire is ensured to be connected to the solid structure of the terminal.

[0012] Preferably, an inwardly protruding limiting step is provided inside the outer shell and at the junction of the plug-in portion and the wiring portion. When the terminal is connected to the wiring portion, one end of the terminal abuts against the limiting step.

[0013] Through the above technical features, when the terminal is inserted into the terminal part from the insertion hole, the terminal moves toward the plug-in part inside the terminal part. When the terminal abuts against the limiting step, the terminal can no longer move toward the plug-in part. The limiting step plays a limiting role in the insertion of the terminal.

[0014] Preferably, the plug base plate is located on one side of the insertion port of the plug hole and is connected to two abutment plates, the abutment plates are provided with positioning protrusions extending along the plugging direction, and both sides of the wiring part are provided with positioning grooves extending along the plugging direction, the positioning grooves and the first wiring hole are located on the side surfaces connected to the wiring part, and when the metal pin is inserted into the plug hole, the positioning protrusions cooperate with the positioning grooves.

[0015] Through the above technical features, when the staff inserts the metal pin into the plug hole, if the positioning groove on the metal pin is not aligned with the positioning protrusion on the abutment plate, the metal pin cannot be inserted into the plug hole. Only when the positioning groove on the wiring part is aligned with the positioning protrusion on the abutment plate, the metal pin can be inserted into the plug hole. At this time, the first wiring hole on the metal pin is just offset from the abutment plate, which facilitates the connection between the wire and the metal pin.

[0016] Preferably, abutment protrusions are provided around the wiring portion, and when the metal plug pin is inserted into the plug hole, the abutment protrusion abuts against the upper part of the plug hole along the plugging direction.

[0017] Through the above technical features, when the metal pin is inserted into the plug-in hole of the plug base plate, the abutment protrusion on the wiring portion of the metal pin abuts against the upper side of the plug-in hole along the plug-in direction, which plays a limiting role when the metal pin is inserted along the plug-in hole. When the abutment protrusion abuts against the upper side of the plug-in hole along the plug-in direction, the metal pin cannot be inserted any further.

[0018] Preferably, the above-mentioned power plug further includes a plug cover plate (2), which is connected to a side of the plug base plate away from the overhanging end of the metal pin, and a positioning column is provided on the plug cover plate corresponding to the plug hole, and a positioning hole is provided on the positioning column. When the plug cover plate is connected to the plug base plate, the top of the wiring screw extends into the positioning hole, and one end of the positioning column abuts against the upper end of the wiring part.

[0019] Through the above technical features, when the plug cover is connected to the plug base, it abuts against the upper end of the wiring part, preventing the metal pin from being forced to move to the side away from the plug hole during use.

[0020] Preferably, first sealing grooves are provided on the surrounding side walls of the plug base, and sealing rings are connected between the first sealing grooves. When the plug cover is connected to the plug base, the inner peripheral wall of the plug cover abuts against the sealing ring.

[0021] Through the above technical features, when the plug cover is connected to the socket base, the plug cover and the socket base are sealed by a sealing ring to prevent water leakage between the plug cover and the socket base, thereby playing a waterproof role.

[0022] Preferably, a first mounting groove is provided on the plug base plate, and a second mounting groove is correspondingly provided on the plug cover plate, a sealing plate is connected to the first mounting groove, a second wiring hole is provided on the sealing plate, and a diameter of the second wiring hole is smaller than a diameter of the connected wire, and when the plug cover plate is connected to the plug base plate, one end of the sealing plate is connected to the second mounting groove.

[0023] Through the above technical features, after the wires are connected to the first wiring holes on the metal pins respectively, the plug cover is connected to the plug base. At this time, the sealing plate on the plug base is connected to the second installation groove of the plug cover, and the wires extend from the second wiring hole on the sealing plate. The diameter of the second wiring hole is smaller than the diameter of the wire after the outer sheath, ensuring that there is no gap between the wire and the second wiring hole, further achieving the effect of sealing and waterproofing.

[0024] Preferably, a first waterproof groove is provided on the inner wall of one end of the plug hole away from the plug cover, a sealing ring is provided in the first waterproof groove, and when the metal pin is inserted into the plug hole, the outer wall of the metal pin abuts against the sealing ring.

[0025] Through the above technical features, the metal pin and the plug hole are sealed by a sealing ring, which further plays a role of sealing and waterproofing.

[0026] Preferably, a threaded through hole is provided on the plug base plate, a second threaded hole is provided on the plug cover plate corresponding to the threaded through hole, a screw is connected between the threaded through hole and the second threaded hole, a second waterproof groove is provided on the side of the threaded through hole away from the plug cover plate, a sealing ring is connected in the second waterproof groove, and the outer peripheral wall of the screw abuts against the inner peripheral wall of the sealing ring.

[0027] Through the above technical features, after the plug cover is connected to the plug base, the screw is screwed into the threaded through hole on the plug base, and one end of the screw is screwed into the second threaded hole on the plug cover to complete the connection between the plug cover and the plug base. The screw and the threaded through hole are sealed with a sealing ring to ensure the sealing and waterproof effect of the power socket.

[0028] In summary, the utility model has the following beneficial effects:

[0029] (1) The hollow outer shell saves metal materials, and the wires are connected to the solid terminal, ensuring the conductive effect after the wires are connected;

[0030] (2) The cooperation between the positioning groove on the wiring part and the positioning protrusion on the abutment plate ensures that when the metal pin is inserted into the plug-in hole, the first wiring hole and the abutment plate are staggered, which facilitates wiring and improves the plug-in efficiency of the metal pin;

[0031] (3) The sealing performance of the power plug is improved by providing a sealing structure between the plug base plate and the plug cover plate, as well as a sealing structure between the metal pin and the plug hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of an implementation scheme of the utility model;

[0033] Figure 2 This is a schematic structural diagram of a first metal pin according to an embodiment of the utility model;

[0034] Figure 3 This is a schematic diagram of the exploded structure of a first metal pin according to an embodiment of the utility model;

[0035] Figure 4The figure is a schematic diagram of the exploded structure of the second metal pin according to one embodiment of the utility model.

[0036] Figure 5 This is a schematic cross-sectional structure diagram of a first metal pin according to an embodiment of the utility model;

[0037] Figure 6 This is a schematic diagram of an explosion structure of an embodiment of the utility model;

[0038] Figure 7 The structure of the plug base plate of one embodiment of the utility model is shown in FIG. Figure 1 ;

[0039] Figure 8 This is a schematic structural diagram of a plug cover plate according to an embodiment of the utility model;

[0040] Fig. 9 The structure of the plug base plate of one embodiment of the utility model is shown in FIG. Figure 2 ;

[0041] In the figure, 1, plug base plate; 11, plug hole; 111, first waterproof groove; 12, abutment plate; 121, positioning protrusion; 13, first sealing groove; 14, threaded through hole; 141, second waterproof groove; 15, sealing plate; 151, second wiring hole; 2, plug cover; 21, second threaded hole; 22, positioning column; 221, positioning hole; 3, metal pin; 31, outer shell; 311, plug-in part; 312, wiring part; 3121, insertion hole; 3122, first wiring hole; 3123, positioning groove; 3124, abutment protrusion; 313, limiting step; 32, wiring column; 321, first threaded hole; 33, wiring screw. DETAILED DESCRIPTION

[0042] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0043] Embodiment 1:

[0044] like Figure 1 As shown, this embodiment discloses a power plug, comprising: a plug base plate 1 and a plug cover plate 2 connected together, the plug base plate 1 is provided with three plug holes 11, and metal pins 3 are plugged into the plug holes 11.

[0045] like Figure 2 , Figure 3As shown, the metal pin 3 includes a hollow outer shell 31, and the outer shell 31 includes a connected plug-in portion 311 and a wiring portion 312. An insertion hole 3121 is provided at one end of the wiring portion 312 away from the plug-in portion 311, and a solid terminal 32 is connected to the wiring portion 312 through the insertion hole 3121. A first threaded hole 321 is provided on the terminal 32, and a wiring screw 33 is threadedly connected to the first threaded hole 321. The first threaded hole 321 extends from one end of the terminal 32 away from the plug-in portion 311 to one side of the plug-in portion 311. A first wiring hole 3122 is provided on one side of the wiring portion 312, and the first wiring hole 3122 passes through the wiring portion 312 and the terminal 32 and is connected to the first threaded hole 321. Thus, the wire is inserted from the first wiring hole 3122, and the wire passes through both sides of the first wiring hole 3122, and then one end of the wiring screw 33 is screwed into the first threaded hole 321, and the wire in the first wiring hole 3122 is pressed down to connect with the solid metal structure of the terminal 32 to ensure the connection effect of the wire.

[0046] like Figure 3 , Figure 4 As shown, the solid terminal 32 may be in the shape of a cuboid, a cylinder, or other shapes are also within the protection scope of the present utility model.

[0047] like Figure 5 As shown, a limiting step 313 protruding inward is provided at the junction of the plug-in portion 311 and the wiring portion 312. When the terminal 32 is connected to the wiring portion 312, one end of the terminal 32 abuts against the limiting step 313. Therefore, when the terminal 32 is inserted into the wiring portion 312 from the insertion hole 3121, the terminal 32 moves toward the plug-in portion 311 inside the wiring portion 312. When the terminal 32 abuts against the limiting step 313, the terminal 32 can no longer move toward the plug-in portion 311. The limiting step 313 plays a limiting role in the insertion of the terminal 32.

[0048] like Figure 6 As shown, the plug base plate 1 is located above the plug hole 11 and is connected to the abutment plates 12 on both sides. The inner side of the abutment plates 12 is provided with positioning protrusions 121 extending along the plugging direction. The two sides of the wiring part 312 are provided with positioning grooves 3123 extending along the plugging direction. The positioning grooves 3123 and the first wiring hole 3122 are located on the side connected to the wiring part 312. Among them, the shapes of the positioning protrusions 121 and the positioning grooves 3123 can be diversified, as long as they can achieve sliding engagement. When the metal pin 3 is inserted into the plug hole 11, the positioning protrusions 121 and the positioning grooves 3123 match. In this way, when the metal pin 3 is inserted into the plug hole 11, the first wiring hole 3122 on the metal pin 3 avoids the abutment plates 12 on the plug base plate 1, and the operator does not need to lift the metal pin 3 before disassembling the power cord, thereby improving the assembly efficiency of the power plug to a certain extent.

[0049] like Figure 6 , Figure 7 As shown, abutment protrusions 3124 are provided around the wiring portion 312 . When the metal plug pin 3 is inserted into the plug hole 11 , the abutment protrusions 3124 abut against the top of the plug hole 11 , which can limit the metal plug pin 3 when inserted into the plug hole 11 .

[0050] like Figure 7 , Figure 8 As shown, a threaded through hole 14 is provided on the plug base plate 1, and a second threaded hole 21 is provided on the plug cover plate 2 corresponding to the threaded through hole 14. After the plug base plate 1 is connected to the plug cover plate 2, a screw is inserted from one side of the threaded through hole 14 and threadedly connected in the second threaded hole 21 to complete the threaded connection of the diameter of the plug base plate 1 and the plug cover plate 2.

[0051] like Figure 7 , Figure 8 As shown, the first sealing groove 13 is provided on the peripheral side walls of the plug base plate 1, and a sealing ring is connected in the first sealing groove 13. When the plug cover plate 2 is connected to the plug base plate 1, the inner peripheral wall of the plug cover plate 2 abuts against the sealing ring. Thus, the sealing performance of the connection between the plug base plate 1 and the plug cover plate 2 is improved.

[0052] like Figure 7 , Figure 8 As shown, a positioning column 22 is provided on the plug cover plate 2 corresponding to the plug hole 11, and a positioning hole 221 is provided on the positioning column 22. When the plug cover plate 2 is connected to the plug base plate 1, the top of the wiring screw 33 extends into the positioning hole 221, and one end of the positioning column 22 abuts against the upper end of the wiring portion 312. The positioning column 22 plays a role in positioning the metal pin 3 to prevent the metal pin 3 from moving up and down under force during use.

[0053] like Figure 7 , Figure 8 As shown, a first mounting groove is provided on the plug base plate 1, a sealing plate 15 is connected in the first mounting groove, and a second mounting groove is provided on the plug cover plate 2. When the plug cover plate 2 and the plug base plate 1 are connected together, one end of the sealing plate 15 is inserted into the second mounting groove, and a second wiring hole 151 is provided on the sealing plate 15 to facilitate the wires to extend into or out of the socket for wiring, and the diameter of the second wiring hole 151 is smaller than the diameter of the connected wires, thereby improving the sealing of the wiring.

[0054] like Fig. 9 As shown, a second waterproof groove 141 is provided on one side of the threaded through hole 14 away from the plug cover plate 2, and a sealing ring is connected in the second waterproof groove 141. Therefore, when the screw is threadedly connected in the threaded through hole 14, the outer peripheral wall of the screw abuts against the inner peripheral wall of the sealing ring, further improving the sealing between the plug base plate 1 and the plug cover plate 2.

[0055] like Fig. 9 As shown, a first waterproof groove 111 is provided on the inner wall of one end of the plug hole 11 away from the plug cover plate 2, and a sealing ring is provided in the first waterproof groove 111. When the metal plug pin 3 is plugged into the plug hole 11, the outer wall of the metal plug pin 3 abuts against the sealing ring, thereby ensuring the sealing of the connection between the metal plug pin 3 and the plug base plate 1.

[0056] Working principle: When in use, the metal pin 3 is inserted into the plug hole 11 on the plug base plate 1, so that the positioning groove 3123 on the wiring part 312 matches the positioning protrusion 121 on the abutment plate 12, and the abutment part on the wiring part 312 abuts against the top of the plug hole 11, so as to complete the connection between the metal pin 3 and the plug base plate 1, and then the wire is inserted into the second wiring hole 151 on the sealing plate 15 with a foreskin, and then the foreskin of the wire inserted into the plug base plate 1 is removed, and the wires are respectively inserted into the first wiring hole 3122 on the wiring part 312, and then the wiring screw hole is screwed in from the upper end of the first threaded hole 321, and the wire is pressed tightly against the solid structure terminal 32 at the lower end of the first threaded hole 321, and then the connecting screw is tightened, and finally the plug cover plate 2 is connected to the plug base plate 1, and the threaded through hole 14 and the second threaded hole 21 are connected by screws to complete the connection of the power socket.

[0057] The specific embodiments described herein are merely examples of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner without departing from the scope defined by the present invention.

Claims

1. A power plug, comprising: A plug base (1) and at least two metal pins (3), wherein the plug base (1) is provided with plugging holes (11) for the metal pins (3) to be plugged in one by one, and one end of the metal pin (3) extends out of the plugging hole (11) and overhangs on one side of the plug base (1), characterized in that the metal pin (3) comprises a hollow outer shell (31) and a solid terminal (32), the outer shell (31) comprises a connected plugging portion (311) and a terminal portion (312), an end of the terminal portion (312) away from the plugging portion (311) is provided with an insertion hole (3121), and the terminal (32) is connected to the terminal portion (312) through the insertion hole (3121).

2. The power plug according to claim 1, characterized in that: The terminal (32) is provided with a first threaded hole (321), the first threaded hole (321) extending from one end of the terminal (32) away from the plug-in portion (311) to one side of the plug-in portion (311), the first threaded hole (321) is threadedly connected with a terminal screw (33), one side of the terminal portion (312) is provided with a first terminal hole (3122), the first terminal hole (3122) passes through one side of the terminal portion (312) and one side of the terminal (32) and is in communication with the first threaded hole (321).

3. The power plug according to claim 2, characterized in that: The first wiring hole (3122) passes through the wiring post (32) and two sides of the wiring portion (312).

4. The power plug according to claim 2, characterized in that: An inwardly protruding limiting step (313) is provided inside the outer shell (31) and at the junction of the plug-in portion (311) and the wiring portion (312); when the wiring post (32) is connected to the wiring portion (312), one end of the wiring post (32) abuts against the limiting step (313).

5. The power plug according to claim 2, characterized in that: The plug base plate (1) is connected to two abutment plates (12) on one side of the insertion port of the plug hole (11); the abutment plates (12) are provided with positioning protrusions (121) extending along the plugging direction; both sides of the wiring portion (312) are provided with positioning grooves (3123) extending along the plugging direction; the positioning grooves (3123) and the first wiring hole (3122) are located on the side surfaces of the wiring portion (312) connected to each other; when the metal plug pin (3) is inserted into the plug hole (11), the positioning protrusions (121) are matched with the positioning grooves (3123).

6. The power plug according to claim 5, characterized in that: Abutment protrusions (3124) are provided around the wiring portion (312), and when the metal plug pin (3) is inserted into the plug hole (11), the abutment protrusions (3124) abut against the upper side of the plug hole (11) along the plugging direction.

7. The power plug according to claim 2, characterized in that: The invention also comprises a plug cover plate (2), wherein the plug cover plate (2) is connected to a side of the plug base plate (1) away from the overhanging end of the metal pin (3), and a positioning column (22) is provided on the plug cover plate (2) corresponding to the plug hole (11), and a positioning hole (221) is provided on the positioning column (22). When the plug cover plate (2) is connected to the plug base plate (1), the top of the wiring screw (33) extends into the positioning hole (221), and one end of the positioning column (22) abuts against the upper end of the wiring portion (312).

8. The power plug according to claim 7, characterized in that: The plug base plate (1) is provided with first sealing grooves (13) on the surrounding side walls, and a sealing ring is connected between the first sealing grooves (13). When the plug cover plate (2) is connected to the plug base plate (1), the inner peripheral wall of the plug cover plate (2) abuts against the sealing ring.

9. The power plug according to claim 8, characterized in that: A first waterproof groove (111) is provided on the inner peripheral wall of one end of the plug hole (11) away from the plug cover plate (2), and a sealing ring is provided in the first waterproof groove (111). When the metal plug pin (3) is plugged into the plug hole (11), the outer peripheral wall of the metal plug pin (3) abuts against the sealing ring.

10. The power plug according to claim 9, characterized in that: The plug base plate (1) is provided with a threaded through hole (14), the plug cover plate (2) is provided with a second threaded hole (21) corresponding to the threaded through hole (14), a screw is connected between the threaded through hole (14) and the second threaded hole (21), a second waterproof groove (141) is provided on a side of the threaded through hole (14) away from the plug cover plate (2), a sealing ring is connected inside the second waterproof groove (141), and the outer peripheral wall of the screw abuts against the inner peripheral wall of the sealing ring.

Images