Miniature plug for three-phase power

Abstract

The utility model discloses a three-phase miniature plug, which belongs to the field of electric power accessories and comprises a plug shell, a switching mechanism is arranged on the inner surface of the plug shell, and the switching mechanism comprises a support column fixedly connected with the center of the lower side of the inner surface of the plug shell. According to the plug, a rotary knob is rotated leftwards, then a threaded rod drives a cross-shaped sliding plate to move upwards, then a first annular rotating block is rotated to drive a mounting block to rotate through a rotating column, so that the mounting block moves to the position below the cross-shaped sliding plate, then the rotary knob is rotated rightwards to drive the threaded rod to rotate, and then the cross-shaped sliding plate is driven to move downwards; when the plug is inserted into the socket, the mounting block is driven to move downwards, and then the rectangular pin or the circular pin is driven to move downwards to penetrate through the through hole, so that the rectangular pin or the circular pin of the plug can be converted according to the shape of the jack of the socket, the plug can be inserted into different sockets, and the practicability of the plug is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric power accessories, especially to a micro plug of three-phase electricity. BACKGROUND

[0002] The connecting head of general electronic products and the electric appliance bolt are called plugs. The plug of household alternating current power supply and the socket have rod-shaped or copper plate-shaped male connectors that are inserted into female connector type power sockets with slots or recesses in a physical way. Three-phase electricity refers to three different phase live wires, and the voltage between each two wires is 380 volts. It is generally used in power systems. Therefore, the three-phase plug generally has four pins, which are connected to three live wires and one ground wire.

[0003] The existing three-phase plug cannot indicate when it is connected. If the electrical equipment is a three-phase asynchronous motor at this time, the three-phase asynchronous motor winding coil can be easily burned out for a long time. When the phase sequence of the three-phase asynchronous motor is opposite, the motor reverses only by disassembling the plug, changing the phase sequence after swapping the wire ends, which is very inconvenient and affects production efficiency. The existing three-phase plug cannot be adjusted, and the plug may fall off

[0004] The existing patent (publication number: CN209266750U) is a new three-phase power plug. When using the three-phase power plug, first assemble the entire device, connect three-phase electricity through the first wiring terminal, the second wiring terminal, the third wiring terminal and the fourth wiring terminal, then press the installation assembly, move the pins inward, move the three pins to the socket adapter position, then insert the pins into the socket, then release the button body, push the pins through the return spring, and tightly fit the pins in the socket to complete the wiring. When reversing is needed, press the switch assembly, the switch assembly is connected through the reversing circuit inside to realize the reversing of the three-phase electricity and the forward and reverse rotation of the three-phase motor.

[0005] To solve the above problems, the existing patent provides a solution, but the plug cannot be switched according to the shape of the socket when in use because most of the power sockets are round or rectangular. Therefore, the pins of the plug must match the shape of the socket before the plug can be inserted into the socket. However, the pins of the plug cannot be switched according to the shape of the socket, reducing the practicality of the plug. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a new three-phase power plug that can solve the problem of the pins of the plug not being able to be switched according to the shape of the socket.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a micro plug of three -phase electricity, including plug shell, the inner surface of plug shell is provided with conversion mechanism, the conversion mechanism includes with the lower side center position fixed connection of plug shell inner surface support column, the upper surface of support column is equipped with cross -sectional slide groove, the cross -sectional slide groove inside is connected cross -sectional slide with sliding, the inner circle of plug shell and the outer circle of support column is rotatably connected with eight rotatory column of circular ring shape even distribution,

[0008] Eight rotatory column between all slidingly connected with installation piece, the lower surface of eight installation piece is fixedly connected with four rectangular pins and four round pins, and the position of four rectangular pins and four round pins is staggered, the lower surface of cross -sectional slide is equipped with the through -hole of the lower surface of plug shell, the outer circle of eight rotatory column upper side is fixedly connected with one ring -shaped block, and one ring -shaped block penetrates the outer circle of plug shell.

[0009] Preferably, the cross -sectional slide and installation piece between be provided with fixed mechanism, the fixed mechanism includes with the four ends of cross -sectional slide all be equipped with one sliding slot, the inside of one sliding slot is connected with the limit block of sliding, the outer surface one side of limit block is fixedly connected with triangular clamping block, and triangular clamping block penetrates cross -sectional slide, the outer surface of installation piece is equipped with triangular slot near triangular clamping block one side, the outer surface other side one sliding slot of limit block is provided with two one spring.

[0010] Preferably, the outer surface of eight rotatory column is equipped with two sliding slots on the upper side near installation piece one side, the inner surface of two sliding slots is connected with sliding clamping block, and one end of sliding clamping block penetrates rotatory column, the outer surface one side of sliding clamping block is provided with two two -way springs in two sliding slots.

[0011] Preferably, the inner surface of plug shell lower side center position is fixedly connected with threaded rod, one end of threaded rod penetrates cross -sectional slide and the upper surface of plug shell and is fixedly connected with knob, and threaded rod and cross -sectional slide are threadedly connected.

[0012] Preferably, the upper surface and the lower surface of one ring -shaped block are equipped with annular slide groove, the inner surface of two annular slide grooves is connected with annular slide block with sliding, and two annular slide blocks are fixedly connected with plug shell.

[0013] Preferably, the outer surface of the eight mounting blocks is provided with an electrical connection hole away from one end of the triangular clamping groove, and the electrical connection hole is electrically connected with the rectangular pin or the circular pin, the lower part of the inner first annular rotating block of the plug shell is provided with a cavity, the inner surface of the cavity is fixedly connected with a fixed mounting block at the position corresponding to the four ends of the cross-shaped sliding plate, the upper surface of the fixed mounting block is provided with a third sliding groove, the inner surface of the third sliding groove is slidably connected with a first sliding block, the upper surface of the first sliding block is fixedly connected with an electric wire mounting column, the outer surface of the first sliding block is fixedly connected with an electrical connection column on the side close to the rotating column, and the electrical connection column penetrates the plug shell, and the outer surface of the first sliding block is provided with a third spring in the third sliding groove away from the electrical connection column.

[0014] Preferably, the inner surface of the cavity is slidably connected with a second sliding block on one side of the first sliding block, and the second sliding block is slidably connected with the first sliding block, the outer surface of the plug shell is provided with a through groove at the position corresponding to the second sliding block, and the second sliding block is slidably connected with the through groove, and the second sliding block is fixedly connected with a second annular rotating block at one end penetrating the through groove.

[0015] Preferably, the position between the first annular rotating block and the second annular rotating block on one side of the outer surface of the plug shell is fixedly connected with an electric wire mounting pipe, and the electric wire mounting pipe penetrates the plug shell and is connected with the cavity.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1. The conversion mechanism is provided, the knob is turned to the left to drive the threaded rod to rotate, then the cross-shaped sliding plate is driven to move upwards, then the first annular rotating block is turned to drive the rotating column to rotate, then the mounting block is driven to rotate, so that the mounting block moves to the lower part of the cross-shaped sliding plate, then the knob is turned to the right to drive the threaded rod to rotate, then the cross-shaped sliding plate is driven to move downwards, then the mounting block is driven to move downwards, then the rectangular pin or the circular pin is driven to move downwards, so that the rectangular pin or the circular pin penetrates the through hole, so that the rectangular pin or the circular pin of the plug can be converted according to the shape of the socket, so that the plug can be inserted into different sockets, and the practicability of the plug is improved.

[0018] 2. The fixing mechanism is provided, the first spring drives the limiting block to slide in the first sliding groove, then the triangular clamping block is driven to move, so that the triangular clamping block is clamped with the triangular clamping groove, the cross-shaped sliding plate can drive the mounting block to move upwards and downwards, the convenience of using the conversion mechanism is improved, then the second spring drives the sliding clamping block to move in the second sliding groove, so that the sliding clamping block can limit the lower surface of the mounting block, the mounting block can rotate with the rotating column, the convenience of using the conversion mechanism is further improved, and the efficiency of converting the rectangular pin or the circular pin of the plug is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 It is the overall structural view of the present application;

[0021] Figure 2 It is the cross-sectional view of the conversion mechanism of the present application;

[0022] Figure 3 It is the Figure 2 enlarged view of A;

[0023] Figure 4 It is the cross-sectional view of the fixing mechanism of the present application;

[0024] Figure 5 It is the Figure 4 enlarged view of B.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1, plug shell; 2, conversion mechanism; 21, support column; 22, cross-shaped sliding groove; 23, cross-shaped sliding plate; 24, rotating column; 25, mounting block; 26, No. 1 annular rotating block; 27, rectangular pin; 28, circular pin; 29, threaded rod; 210, knob; 211, annular sliding groove; 212, annular sliding block; 213, through hole; 3, fixing mechanism; 31, No. 1 sliding groove; 32, limiting block; 33, triangular clamping block; 34, triangular clamping groove; 35, No. 1 spring; 36, No. 2 sliding groove; 37, sliding clamping block; 38, No. 2 spring; 4, electrical connection hole; 5, cavity; 6, fixed mounting block; 7, No. 3 sliding groove; 8, No. 1 sliding block; 9, electrical connection column; 10, wire mounting column; 11, No. 3 spring; 12, No. 2 sliding block; 13, through slot; 14, No. 2 annular rotating block; 15, wire mounting pipe. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0028] Please refer to Figures 1 to 5 The utility model provides a technical scheme:

[0029] A micro plug of three -phase electricity, including plug shell 1, the inner surface of plug shell 1 is provided with conversion mechanism 2, conversion mechanism 2 includes with the lower center position fixed connection of plug shell 1 inner surface support column 21, the upper surface of support column 21 is equipped with cross -shaped sliding slot 22, cross -shaped sliding slot 22 inside sliding connection cross -shaped sliding plate 23, the inner circular surface of plug shell 1 and the outer circular surface of support column 21 are rotatably connected with eight circular ring shape evenly distributed rotating column 24;

[0030] Eight rotating column 24 between slidingly connected with mounting block 25, the lower surface of eight mounting block 25 is fixedly connected with four rectangular pins 27 and four circular pins 28, and the position of four rectangular pins 27 and four circular pins 28 is staggered, the lower rectangular pin 27 or circular pin 28 below cross -shaped sliding plate 23 is equipped with through hole 213 that penetrates the lower surface of plug shell 1, the upper side of the outer circular surface of eight rotating column 24 is fixedly connected with No. Annular rotating block 26, and No. Annular rotating block 26 penetrates the outer circular surface of plug shell 1.

[0031] Specifically, as shown in Figure 2 The lower center position of the inner surface of plug shell 1 is fixedly connected with threaded rod 29, one end of threaded rod 29 penetrates the upper surface of cross -shaped sliding plate 23 and plug shell 1 and is fixedly connected with knob 210, and threaded rod 29 and cross -shaped sliding plate 23 are screw connected.

[0032] By rotating knob 210 to the left drive threaded rod 29 rotates, then drive cross -shaped sliding plate 23 moves upwards, then rotating No. Annular rotating block 26 drive rotating column 24 rotates, then drive mounting block 25 rotates, make mounting block 25 move to the lower cross -shaped sliding plate 23, then rotate knob 210 to the right drive threaded rod 29 rotates, then drive cross -shaped sliding plate 23 moves downwards, then drive four mounting blocks 25 downwards, then drive four rectangular pins 27 or four circular pins 28 downwards, make four rectangular pins 27 or four circular pins 28 penetrate through hole 213, so that the rectangular pin 27 or circular pin 28 of the plug can be converted according to the shape of the socket jack, so that the plug can be inserted into different sockets, improve the practicability of the plug.

[0033] Specifically, as shown in Figure 4 、 Figure 5As shown, the cross-shaped slide plate 23 and the mounting block 25 are provided with a fixing mechanism 3, the fixing mechanism 3 comprises a first sliding groove 31 opened at four ends of the cross-shaped slide plate 23, a limiting block 32 is slidably connected in the first sliding groove 31, a triangular clamping block 33 is fixedly connected to one side of the outer surface of the limiting block 32, and the triangular clamping block 33 penetrates the cross-shaped slide plate 23, a triangular clamping groove 34 is opened on one side of the outer surface of the mounting block 25 close to the triangular clamping block 33, and two first springs 35 are arranged in the first sliding groove 31 on the other side of the outer surface of the limiting block 32.

[0034] Specifically, as shown in the figure, Figure 5 The outer surface of the eight rotating columns 24 is opened with a second sliding groove 36 on the upper side of one side close to the mounting block 25, the inner surface of the second sliding groove 36 is slidably connected with a sliding clamping block 37, and one end of the sliding clamping block 37 penetrates the rotating column 24, and the outer surface of the sliding clamping block 37 is provided with two second springs 38 inside the second sliding groove 36.

[0035] The first spring 35 drives the limiting block 32 to slide in the first sliding groove 31, then drives the triangular clamping block 33 to move, so that the triangular clamping block 33 is clamped with the triangular clamping groove 34, which can facilitate the cross-shaped slide plate 23 to drive the mounting block 25 to move up and down, improve the convenience of using the conversion mechanism 2, then the second spring 38 drives the sliding clamping block 37 to move in the second sliding groove 36, so that the sliding clamping block 37 can limit the lower surface of the mounting block 25, facilitate the mounting block 25 to rotate with the rotating column 24, further improve the convenience of using the conversion mechanism 2, and improve the efficiency of the plug to convert the rectangular pin 27 or the circular pin 28.

[0036] Specifically, as shown in the figure, Figure 2 The upper surface and the lower surface of the first annular rotating block 26 are opened with an annular sliding groove 211, the inner surfaces of the two annular sliding grooves 211 are slidably connected with annular sliding blocks 212, and the two annular sliding blocks 212 are fixedly connected with the plug housing 1.

[0037] Through the sliding connection of the annular sliding block 212 and the annular sliding groove 211, the stability of the rotation of the first annular rotating block 26 is improved.

[0038] Specifically, as shown in the figure, Figure 3As shown, the outer surface of the eight mounting blocks 25 is provided with an electrical connection hole 4 away from one end of the triangular clamping groove 34, and the electrical connection hole 4 and the rectangular pin 27 or the circular pin 28 are electrically connected, the inside of the first annular rotating block 26 of the plug shell 1 is provided with a cavity 5, the inner surface of the cavity 5 is fixedly connected with a fixed mounting block 6 at the corresponding position of the four ends of the cross-shaped sliding plate 23, the upper surface of the fixed mounting block 6 is provided with a third sliding groove 7, the inner surface of the third sliding groove 7 is slidably connected with a first sliding block 8, the upper surface of the first sliding block 8 is fixedly connected with a wire mounting column 10, the outer surface of the first sliding block 8 is fixedly connected with an electrical connection column 9 on the side close to the rotating column 24, and the electrical connection column 9 penetrates the plug shell 1, and a third spring 11 is arranged in the third sliding groove 7 on the side of the first sliding block 8 away from the electrical connection column 9.

[0039] Specifically, as shown in the figure, Figure 3 The inner surface of the cavity 5 is slidably connected with a second sliding block 12 on one side of the first sliding block 8, and the second sliding block 12 is slidably connected with the first sliding block 8, the outer surface of the plug shell 1 is provided with a through groove 13 at the corresponding position of the second sliding block 12, and the second sliding block 12 is slidably connected with the through groove 13, and the second sliding block 12 is fixedly connected with a second annular rotating block 14 at one end penetrating the through groove 13.

[0040] The wire is fixedly connected with the wire mounting column 10, then the first sliding block 8 is driven to move by the third spring 11, then the electrical connection column 9 is driven to move, so that the electrical connection column 9 is inserted into the electrical connection hole 4, so that the electrical connection column 9 is electrically connected with the electrical connection hole 4, so that the wire is electrically connected with the electrical connection hole 4, when the pin is converted, the second sliding block 12 is driven to rotate by rotating the second annular rotating block 14, then the first sliding block 8 is driven to move reversely, then the electrical connection column 9 is driven to move reversely, so that the electrical connection column 9 is separated from the electrical connection hole 4, which is convenient for converting the pin.

[0041] Specifically, as shown in the figure, Figure 2 The outer surface of the plug shell 1 is fixedly connected with a wire mounting pipe 15 between the first annular rotating block 26 and the second annular rotating block 14 on one side, and the wire mounting pipe 15 penetrates the plug shell 1 and is connected with the cavity 5.

[0042] The wire can be fixedly connected with the wire mounting column 10 by penetrating the wire mounting pipe 15.

[0043] Working principle: in use, first, the power line is fixedly connected with the wire mounting column 10, then the first sliding block 8 is driven to move by the third spring 11, then the electrically connecting column 9 is driven to move, the electrically connecting column 9 is inserted into the electrically connecting hole 4, the electrically connecting column 9 is electrically connected with the electrically connecting hole 4, so that the power line is electrically connected with the electrically connecting hole 4, when the prongs are converted, the second sliding block 12 is driven to rotate by rotating the second annular rotating block 14, then the first sliding block 8 is reversely moved, then the electrically connecting column 9 is reversely moved, the electrically connecting column 9 is separated from the electrically connecting hole 4, then the cross-shaped sliding plate 23 is driven to move upwards by rotating the knob 210, then the mounting block 25 is driven to rotate by rotating the first annular rotating block 26, then the mounting block 25 is moved below the cross-shaped sliding plate 23, then the cross-shaped sliding plate 23 is driven to move downwards by rotating the knob 210, then the four mounting blocks 25 are driven to move downwards, then the four rectangular prongs 27 or the four circular prongs 28 are driven to move downwards, so that the four rectangular prongs 27 or the four circular prongs 28 penetrate through the through hole 213, so that the rectangular prongs 27 or the circular prongs 28 of the plug can be converted according to the shape of the socket outlet.

[0044] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A miniature plug for three-phase electricity, comprising a plug housing (1), characterized in that: The inner surface of the plug shell (1) is provided with a conversion mechanism (2), the conversion mechanism (2) includes a support column (21) fixedly connected with the lower center position of the inner surface of the plug shell (1), a cross-shaped sliding groove (22) is opened on the upper surface of the support column (21), and a cross-shaped sliding plate (23) is slidably connected in the cross-shaped sliding groove (22); eight rotating columns (24) are rotatably connected between the inner circular surface of the plug shell (1) and the outer circular surface of the support column (21) and are uniformly distributed in a circular ring shape. Eight mounting blocks (25) are slidably connected between the eight rotating columns (24), the lower surfaces of the eight mounting blocks (25) are fixedly connected with four rectangular pins (27) and four circular pins (28), the positions of the four rectangular pins (27) and the four circular pins (28) are staggered, through holes (213) penetrating the lower surface of the plug shell (1) are formed below the rectangular pins (27) or the circular pins (28) of the cross-shaped sliding plate (23), a first annular rotating block (26) is fixedly connected to the upper side of the outer circular surface of the eight rotating columns (24), and the first annular rotating block (26) penetrates the outer circular surface of the plug shell (1).

2. A three-phase miniature plug according to claim 1, characterized in that: A fixing mechanism (3) is arranged between the cross-shaped sliding plate (23) and the mounting block (25), the fixing mechanism (3) includes a first sliding groove (31) formed in each of the four ends of the cross-shaped sliding plate (23), a limiting block (32) is slidably connected in the first sliding groove (31), a triangular clamping block (33) is fixedly connected to one side of the outer surface of the limiting block (32) and penetrates the cross-shaped sliding plate (23), a triangular clamping groove (34) is formed in the side of the outer surface of the mounting block (25) close to the triangular clamping block (33), and two first springs (35) are arranged in the first sliding groove (31) on the other side of the outer surface of the limiting block (32).

3. A three-phase miniature plug according to claim 2, characterized in that: A second sliding groove (36) is formed in the upper side of the side of the outer surface of the eight rotating columns (24) close to the mounting block (25), a sliding clamping block (37) is slidably connected to the inner surface of the second sliding groove (36) and penetrates the rotating column (24) at one end, and two second springs (38) are arranged in the second sliding groove (36) on one side of the outer surface of the sliding clamping block (37).

4. A three-phase miniature plug as defined in claim 1, wherein: A threaded rod (29) is fixedly connected to the lower center position of the inner surface of the plug shell (1), a knob (210) is fixedly connected to one end of the threaded rod (29) and penetrates the upper surface of the cross-shaped sliding plate (23) and the plug shell (1), and the threaded rod (29) is threadedly connected with the cross-shaped sliding plate (23).

5. A three-phase miniature plug according to claim 1, characterized in that: Annular sliding grooves (211) are formed in the upper surface and the lower surface of the first annular rotating block (26), annular sliding blocks (212) are slidably connected to the inner surfaces of the two annular sliding grooves (211), and the two annular sliding blocks (212) are fixedly connected with the plug shell (1).

6. A three-phase miniature plug according to claim 2, characterized in that: The outer surface of eight mounting blocks (25) is provided with an electrical connection hole (4) away from one end of the triangular slot (34), and the electrical connection hole (4) and the rectangular pin (27) or the circular pin (28) are electrically connected, the lower part of the inner first annular rotating block (26) of the plug shell (1) is provided with a cavity (5), the inner surface of the cavity (5) is fixedly connected with a fixed mounting block (6) at the corresponding position of the four ends of the cross-shaped sliding plate (23), the upper surface of the fixed mounting block (6) is provided with a third sliding groove (7), the inner surface of the third sliding groove (7) is slidably connected with a first sliding block (8), the upper surface of the first sliding block (8) is fixedly connected with a wire mounting column (10), the outer surface of the first sliding block (8) is fixedly connected with an electrical connection column (9) on the side close to the rotating column (24), and the electrical connection column (9) penetrates the plug shell (1), and the outer surface of the first sliding block (8) is provided with a third spring (11) in the third sliding groove (7) away from the electrical connection column (9).

7. A three-phase miniature plug according to claim 6, characterized in that: The inner surface of the cavity (5) is slidably connected with a second sliding block (12) on one side of the first sliding block (8), and the second sliding block (12) is slidably connected with the first sliding block (8), the outer surface of the plug shell (1) is provided with a through groove (13) at the corresponding position of the second sliding block (12), and the second sliding block (12) is slidably connected with the through groove (13), and the second sliding block (12) is fixedly connected with a second annular rotating block (14) at one end penetrating the through groove (13).

8. A three-phase miniature plug according to claim 7, characterized in that: The outer surface of the plug shell (1) is fixedly connected with a wire mounting pipe (15) between the first annular rotating block (26) and the second annular rotating block (14) on one side, and the wire mounting pipe (15) penetrates the plug shell (1) and is connected with the cavity (5).

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