CN217788838U - Plug with improved structure - Google Patents

Abstract

The utility model provides a plug, include: an insulated housing, an insulated wire and a pin; the pins are fixedly connected to one side of the insulating shell; the insulated wires extend into the insulated shell from the side surface of the insulated shell, which is far away from the pins, and are arranged along the extending direction of the pins; the insulated wire extending into the insulated shell is electrically connected with the pin; an operation boss is arranged on the side face, parallel to the extension direction of the pin, of the insulating shell, and the height direction of the operation boss is perpendicular to the extension direction of the pin. The plug is matched with a socket with an arc extinguish chamber, so that the breaking time of a switch of the socket is earlier than that of a conductive pin and a chuck on the socket, and the switch matching of the plug and the socket is effectively realized to control the breaking of a power supply.

Description

a plug

technical field

The utility model relates to the technical field of low-voltage electrical appliances, in particular to a plug.

Background technique

With the development of the economy and the improvement of environmental awareness, the country has continuously increased its investment in clean energy fields such as photovoltaics and wind energy in recent years. Therefore, DC power distribution systems will be used in more and more actual production scenarios in the near future.

As we all know, the waveform of alternating current is a sinusoidal waveform, and every cycle will pass through zero. For our household plugs, normal plugging and unplugging will not produce a large arc. Even if the load is large and the plug generates an arc when it is plugged in, the arc will extinguish itself when the circuit crosses zero. But DC power is different. It has no zero point, so the whole circuit cannot extinguish the arc at the zero point like AC power. As a result, in the actual production process, there are problems in the DC power distribution system that the arc is difficult to extinguish and the arc burns the pins and affects the life of the plug.

With the wide application of the DC power distribution system, various DC sockets gradually appear, and the DC sockets are equipped with an arc extinguishing chamber, but currently there is no plug matching the socket with an arc extinguishing chamber on the market.

Utility model content

In order to solve the problem that there is no plug matching the socket with the arc extinguishing chamber at present, the utility model proposes a plug, including: an insulating shell, an insulating wire and a pin;

The pins are fixedly connected to one side of the insulating shell;

The insulated wires extend into the insulating shell from the side of the insulating shell away from the pins, and are arranged along the extending direction of the pins;

The insulated wire extending into the insulating shell is electrically connected to the pin;

An operation boss is provided on the side of the insulating shell parallel to the extension direction of the pin, and the height direction of the operation boss is perpendicular to the extension direction of the pin.

Preferably, the operation boss is arranged in a triangular structure, including two slopes and a pointed top provided at the junction of the two slopes.

Preferably, the pointed top is set as an arc surface.

Preferably, the operating boss is arranged in a trapezoidal structure, including two slopes and a plane parallel to the insulating casing provided at the junction of the two slopes.

Preferably, the connection between the plane and the two inclined surfaces is set as an arc surface.

Preferably, it also includes a protective ring sleeved on the outside of the pin;

The protective ring is extended on the side of the insulating shell.

Preferably, the height of the operating boss is 1-2.5 mm.

Preferably, the height of the operating boss is 3-4.5mm.

Preferably, the height of the operating boss is 5-7mm.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model provides a plug, comprising: an insulating shell, an insulated wire and a pin; the pin is fixedly connected to one side of the insulating shell; the insulated wire extends from the side of the insulating shell away from the pin into the insulating shell and arranged along the extending direction of the pins; the insulated wires extending into the insulating shell are electrically connected to the pins; the extending direction of the pins on the insulating shell An operation boss is arranged on the parallel side, and the height direction of the operation boss is perpendicular to the extension direction of the pin. A plug used in conjunction with a socket with an arc extinguishing chamber is provided, so that the breaking time of the socket switch is earlier than the breaking time of the conductive pin and the chuck on the socket, effectively realizing the switch cooperation between the plug and the socket to control the power breaking.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the plug of the present utility model;

Fig. 2 is a top view schematic diagram of the plug of the present utility model;

Fig. 3 is an enlarged view of part A of Fig. 2;

Fig. 4 is a structural schematic diagram of a rounded corner at the top of the operating boss of the plug of the utility model;

Fig. 5 is a structural schematic diagram of the trapezoidal structure of the operation boss of the plug of the present invention;

Fig. 6 is a schematic diagram of the structure of the plug pin side of the utility model;

Fig. 7 is a schematic diagram of the external structure of the plug of the present invention plugged into the socket;

Figure 8 is a schematic diagram of the internal structure of the plug of the utility model with the legs not inserted into the socket;

Fig. 9 is a schematic diagram of the internal structure of the plug of the utility model where the legs are inserted into the socket;

Fig. 10 is a schematic diagram of the internal structure of the plug of the utility model with the legs fully inserted into the socket.

Among them, 10, socket; 110, chuck; 120, lock; 121, lug; 123, slot; 124, spring; 125, first shaft; 130, jumper; 131, torsion spring; 132, second Rotating shaft; 133, bump; 140, rod; 20, plug; 200, insulating shell; 210, operating boss; 211, pointed top; 212, upper slope; 213, lower slope; 214, plane; 230, insulated wire; 240, protective ring.

Detailed ways

The utility model discloses a plug. The device makes the disconnection time of the socket switch earlier than the disconnection time of the conductive pin and the chuck on the socket, and effectively realizes the switching cooperation between the plug and the socket to control the power disconnection.

Example

A plug 20, as shown in Figures 1 and 2, includes: an insulating shell 200, an insulated wire 230 and a pin 220; the pin 220 is fixedly connected to one side of the insulating shell 200; the insulated wire 230 is away from the pin 220 from the insulating shell 200 The side of the insulating shell 200 extends into the insulating shell 200 and is arranged along the extension direction of the pin 220; the insulated wire 230 extending into the insulating shell 200 is electrically connected to the pin 220; At least one operation boss 210 is provided, and the height direction of the operation boss 210 is perpendicular to the extension direction of the pin 220 . The socket 10 is provided with at least one switch, and the pin 220 is inserted into the chuck 110 inside the socket 10 to be energized. In this embodiment, the operating boss 210 drives the mechanism in the socket 10 to directly or indirectly drive at least one switch in the socket 10 to close or Opening, the time when the switch is closed or opened is earlier than the time when the conductive pin 220 is connected or disconnected from the collet 110 inside the socket 10 .

The insulating shell 200 is a shell structure with a hollow inside, and the material is made of insulating material.

The operating boss 210 can be arranged in a triangular structure. As shown in FIG. 3 , it is set on the insulating housing 200 and includes two inclined surfaces and a pointed top 211 arranged at the junction of the two inclined surfaces. The inclined surface above the pointed top 211 is The upper slope 212 and the slope below the pointed top 211 are the lower slope 213 . The pointed top 211 can be set as an arc surface, as shown in FIG. 4 . In addition, the operating boss 210 can also be arranged in a trapezoidal structure, as shown in FIG. 5 , including two slopes and a plane 214 parallel to the insulating housing 200 provided at the connection of the two slopes. The connection between the plane 214 and the two inclined surfaces is set as an arc surface. In order to make it move more smoothly relative to the lug 121 of the latch 120 of the socket 10 , the operation is more labor-saving. The connection mode between the operation boss 210 and the plug 20 is not limited, and the fixed connection between the two can be realized. In this embodiment, the operation boss 210 and the insulating shell 200 of the plug 20 are integrally formed, the space utilization is reasonable, and the process is simple. low cost.

The socket 10 required by the conventional mechanical life can make the height of the operating boss 210 be 3-4.5mm, that is, the height of the operating boss 210 is 3-4.5mm higher than the surface of the plug 20, and such a height requires a certain space for movement; if If the requirements for mechanical life are not too high, the height of the operating boss 210 can be 1-2.5mm, that is, the height of the operating boss 210 is 1-2.5mm higher than the surface of the plug 20, so that the action space required is small and the operation is flexible , the supporting socket 10 can be reduced in size; if you want to have a higher mechanical life, you can make the height of the operating boss 210 5-7mm, that is, the height of the operating boss 210 is 5-7mm higher than the surface of the plug 20, so that the reliability is better High, of course, the volume of the socket 10 that needs to be matched is also relatively large.

As shown in FIG. 6 , the pins 220 are sheet-like structures with a certain thickness, and the cross-section of each pin 220 is rectangular. In this embodiment, three pins 220 are selected. The long sides of the cross-sections of the pins 220 on both sides are parallel to each other. At the same time, the pins 220 on both sides are distributed symmetrically along the central axis between them. The long side of the middle pin 220 is perpendicular to the long sides of the pins 220 on both sides for grounding protection. . The pins 220 are welded to the conductive core of the insulated wire 230 inside the plug 20 , and the insulated wire 230 protrudes from the side of the insulating shell 200 away from the pins 220 .

As shown in FIG. 1 , a protective ring 240 is sheathed on the outer side of the pin 220 ; the protective ring 240 is extended on the side of the insulating housing 200 . The protection ring 240 is integrated with the insulating shell 200 , and the operation boss 210 is disposed on the outer wall of the protection ring 240 .

As shown in Figures 7 and 8, before the plug 20 is inserted, the lower inclined surface 213 of the operating boss 210 squeezes the lug 121 of the latch 120 in the socket 10, so that the lug 121 compresses the spring 124 and moves along the first rotating shaft 125. Do a counterclockwise rotation. As shown in FIG. 9 , the plug 20 continues to move downward, and the pointed top 211 of the operating boss 210 passes through the lug 121 of the lock 120 , and the lock 120 is rotated clockwise along the first rotating shaft 125 to reset, and the plug 20 continues to move downward. Downward movement, as shown in Figure 10, the insulating shell 200 of the plug 20 squeezes the jumper 130 of the socket 10, makes the jumper 130 rotate clockwise along the second rotating shaft 132, and compresses the torsion spring 131 to store energy until the jumper 130 The protrusion 133 is locked in the slot 123 of the locking buckle 120 . At this time, the plug 20 continues to move downward, the insulating shell 200 pressure drives the switch driving rod 140 of the socket 10, and the switch is closed.

When the plug 20 is pulled out, the upper inclined surface 212 of the operation boss 210 squeezes the lug 121 of the locking buckle 120 in the socket 10, so that the lug 121 compresses the spring 124, and rotates counterclockwise along the first rotating shaft 125, jumping The protrusion 133 of the buckle 130 is released from the slot 123 of the lock buckle 120, and under the action of the stored energy torsion spring 131, the jumper 130 rotates rapidly counterclockwise to drive the switch driving rod 140, and the switch is quickly disconnected.

The plug 20 is used in conjunction with the corresponding socket 10 , which can effectively reduce the burning of the pin 220 and the conductive clip 110 caused by the arc, and improve the service life of the plug 20 and the socket 10 .

The above are only embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model are included in the pending application. Within the scope of the claims of the present utility model.

Claims (9)

1. A plug, comprising: an insulating housing (200), an insulated wire (230), and a pin (220);

the pins (220) are fixedly connected to one side of the insulating shell (200);

the insulated wires (230) extend into the insulating shell (200) from the side of the insulating shell (200) away from the pins (220) and are arranged along the extending direction of the pins (220);

the insulated wire (230) extending into the insulating housing (200) is electrically connected with the pin (220);

an operation boss (210) is arranged on a side surface of the insulating shell (200) parallel to the extension direction of the pin (220), and the height direction of the operation boss (210) is perpendicular to the extension direction of the pin (220).

2. A plug according to claim 1, wherein the operating projections (210) are arranged in a triangular configuration comprising two angled surfaces and a pointed apex (211) provided at the junction of the two angled surfaces.

3. A plug according to claim 2, characterised in that the pointed tip (211) is provided as a circular arc.

4. A plug according to claim 1, wherein the operating projections (210) are arranged in a trapezoidal configuration comprising two inclined surfaces and a flat surface (214) parallel to the insulating housing (200) provided at the junction of the two inclined surfaces.

5. A plug according to claim 4, characterised in that the junction between the flat surface (214) and the two inclined surfaces is provided as a circular arc.

6. A plug according to claim 1, further comprising a protective ring (240) arranged to surround the pin (220);

the protection ring (240) is extended and arranged on the side surface of the insulation shell (200).

7. A plug according to claim 1, characterised in that the height of the operating projection (210) is 1-2.5mm.

8. A plug according to claim 1, characterised in that the height of the operating projection (210) is 3-4.5mm.

9. A plug according to claim 1, characterised in that the height of the operating projection (210) is 5-7mm.

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