CN215299706U - Plug with polarity detection function - Google Patents

Abstract

The utility model discloses a plug with polarity detects function, it includes plug body and polarity detection circuitry, the plug body includes the inner tower, fixes the live wire on the inner tower and participates in, the ground wire participates in, the zero line participates in and with the shell of inner tower cladding, polarity detection circuitry includes diode, resistance and warning device, warning device's one end is participated in with the ground wire and is connected, and warning device's the other end is connected through the N utmost point of resistance with the diode, and the P utmost point of diode is participated in with the zero line and is connected. The utility model has the advantages of ingenious structural design, the polarity detection circuit is reasonably arranged in the plug, when the plug or the socket is out of order, the warning device can emit light or/and sound to remind the user, the plug is not inserted for use, and the power utilization safety is ensured; and the whole structure is compact and simple, the volume is small, the realization is easy, and the safety and the reliability are realized.

Description

Plug with polarity detection function

Technical Field

The utility model relates to a plug technical field, concretely relates to plug with polarity detects function.

Background

Nowadays, more and more electric equipment is used, and a power plug also becomes an article which can be touched everywhere in daily life. In modern society, power plugs are commonly used in the electrical appliance industry, and power plugs sold on the market are various and have different design concepts, so that the power plugs can meet the use requirements of different users.

Although the current plug on the market can approximately meet the use requirement, the design is not ingenious, particularly in the US/Chinese/Japan market, a DIY type female socket/socket exists, and the female socket/socket which needs to be maintained is damaged on household appliances, machine equipment, caravans, ships and the like. When assembling/repairing/renewing these female sockets/receptacles, it is possible to connect the electrical polarity arrangement error, such as the electrical line that would have been connected to the hot line (L), to the ground (G) location of the female socket/receptacle. Therefore, the air switch/the leakage protection switch can not be switched on, or electrical equipment is damaged and burnt, or a fire disaster is caused, so that the air switch/the leakage protection switch is safe to get stuck.

SUMMERY OF THE UTILITY MODEL

To the above, an object of the utility model is to provide a structural design is ingenious, reasonable, can detect polarity, effectively ensures the plug that has polarity and detects the function of power consumption safety.

In order to achieve the above purpose, the utility model provides a technical scheme is:

the utility model provides a plug with polarity detects function, its includes plug body and polarity detection circuitry, the plug body includes the inner tower, fixes live wire that inner tower was participated in, the ground wire is participated in, the zero line is participated in and with the shell of inner tower cladding, polarity detection circuitry includes diode, resistance and warning device, warning device's one end is participated in with the ground wire and is connected, and warning device's the other end is connected through the N utmost point of resistance with the diode mutually, and the P utmost point of diode is participated in with the zero line and is connected.

As an improvement of the utility model, the warning device is an LED lamp or/and a buzzer. The warning function is achieved through light emitting or/and sound emitting.

As an improvement of the present invention, the warning device is fixed on the inner frame, and the housing is provided with a hole corresponding to the warning device. The purpose of light transmission or sound output can be realized through the opening.

As an improvement of the utility model, a transparent or semitransparent sealing cover is arranged on the open pore. The sealing effect is good.

As an improvement of the present invention, the diode and the resistor are located in the heat shrinkage tube. The diode and the resistor are fixed and insulated by the heat shrink tube.

As an improvement of the utility model, the polarity detection circuit still includes circuit substrate, diode, resistance and warning device all weld in circuit substrate is last. Simple structure and easy realization.

As an improvement of the utility model, the inner frame is provided with a cavity for placing the circuit substrate, and the cavity is provided with an inner cover which can seal the opening of the cavity. The device in the cavity can be protected from damage.

As an improvement of the utility model, be equipped with on the internal surface of inner cup and insert the post, and be equipped with on the cavity with this jack of inserting post looks adaptation. The insertion posts are inserted into the insertion holes to be in interference fit, and the installation is simple and convenient.

As an improvement of the utility model, the two sides of the upper part of the shell are provided with concave positions, which are convenient to be held by hands and bring convenience to plugging and unplugging.

As an improvement of the utility model, the handle is arranged on the shell, which brings convenience for plugging.

The utility model has the advantages that: the utility model has the advantages of ingenious structural design, the polarity detection circuit is reasonably arranged in the plug, when the plug or the socket is out of order, the warning device can emit light or/and sound to remind the user, the plug is not inserted for use, and the power utilization safety is ensured; and the whole structure is compact and simple, the volume is small, the realization is easy, and the safety and the reliability are realized.

The present invention will be further explained with reference to the drawings and the embodiments.

Drawings

Fig. 1 is a schematic perspective view of embodiment 1 of the present invention.

Fig. 2 is an exploded schematic view of embodiment 1 of the present invention.

Fig. 3 is a schematic circuit diagram according to embodiment 1 of the present invention.

Fig. 4 is a schematic perspective view of embodiment 2 of the present invention.

Fig. 5 is a schematic circuit diagram according to embodiment 3 of the present invention.

Fig. 6 is a schematic circuit diagram according to embodiment 4 of the present invention.

Detailed Description

Example 1: referring to fig. 1 to 3, the plug with polarity detection function provided in this embodiment includes a plug body 1 and a polarity detection circuit 2, where the plug body 1 includes an inner frame 11, a fire wire pin, an earth wire pin, a zero wire pin fixed on the inner frame 11, and a housing 12 covering the inner frame 11, the polarity detection circuit 2 includes a diode, a resistor, and a warning device, one end of the warning device is connected to the earth wire pin G, the other end of the warning device is connected to an N pole of the diode through the resistor, and a P pole of the diode is connected to the zero wire pin W.

In this embodiment, the warning device is an LED lamp. The warning effect is achieved through light emission. Specifically, the warning device is fixed on the inner frame 11, and the outer shell 12 is provided with an opening corresponding to the warning device. The purpose of light transmission can be achieved through the opening. Then, a transparent or semitransparent sealing cover can be arranged on the opening hole, so that the sealing effect is achieved, and the observation is facilitated. Alternatively, the entire housing 12 may be designed to be transparent or translucent, thereby eliminating the need for a cover.

In this embodiment, the polarity detection circuit 2 further includes a circuit substrate, and the diode, the resistor and the warning device are all welded on the circuit substrate. Simple structure and easy realization. In other embodiments, the diode and the resistor may be directly placed in a heat shrink tube without a circuit substrate, and then the heat shrink tube is shrunk by heating to fix and insulate the diode and the resistor.

In order to facilitate the installation of the circuit substrate, a concave cavity for placing the circuit substrate is arranged on the inner frame 11, an inner cover 13 capable of sealing the opening of the concave cavity is arranged on the concave cavity, an inserting column is arranged on the inner surface of the inner cover 13, and an inserting hole matched with the inserting column is arranged on the concave cavity. The insertion posts are inserted into the insertion holes to be in interference fit, and the installation is simple and convenient.

The concave positions 14 are arranged on the two sides of the upper part of the shell 12, so that the shell can be conveniently pinched by hands, and convenience is brought to plugging and unplugging.

Example 2: referring to fig. 4, the plug with polarity detection function provided in this embodiment has substantially the same structure as that of embodiment 1, except that a handle is provided on the housing 12, so that the plug can be pulled by hand more conveniently, which facilitates plugging and unplugging.

Example 3: referring to fig. 5, the plug with polarity detection function provided in this embodiment is substantially the same as the structure of embodiment 1, except that the warning device is a buzzer. The warning effect is achieved through sound production.

Example 4: referring to fig. 6, the present embodiment provides a plug with a polarity detection function, which has a structure substantially the same as that of embodiment 1, except that the warning device is an LED lamp and a buzzer. The warning effect is achieved by simultaneously emitting light and making sound, and the warning effect is better.

When the plug or the socket is used, if the polarity of the plug or the socket is wrong, namely the live wire and the zero wire are wrong, the warning device can emit light or/and sound to remind a user, the plug or the socket is not inserted for use, and the electricity utilization safety is ensured.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation. If the present invention is applied to the plug of other structure obtained by using the same or similar structure, the protection scope of the present invention is also included.

Claims (10)

1. The utility model provides a plug with polarity detects function, its includes the plug body, its characterized in that, it still includes polarity detection circuitry, the plug body includes the inner tower, fixes live wire that inner tower was put in, ground wire is participated in, the zero line is participated in and with the shell of inner tower cladding, polarity detection circuitry includes diode, resistance and warning device, warning device's one end is participated in with the ground wire and is connected, and warning device's the other end is connected through the N utmost point of resistance with the diode, and the P utmost point of diode is participated in with the zero line and is connected.

2. The plug with polarity detection function according to claim 1, wherein the warning device is an LED lamp or/and a buzzer.

3. The plug with polarity detection function according to claim 2, wherein the warning device is fixed on the inner frame, and the outer shell is provided with an opening corresponding to the warning device.

4. The plug with polarity detection function as claimed in claim 3, wherein a transparent or translucent cover is provided on the opening.

5. The plug with polarity detection function according to claim 1, wherein the diode and the resistor are located in a heat shrink tube.

6. The plug with polarity detection function according to claim 1, wherein said polarity detection circuit further comprises a circuit substrate, and said diode, said resistor and said warning device are soldered on said circuit substrate.

7. The plug with polarity detection function as claimed in claim 6, wherein the inner frame is provided with a cavity for placing the circuit substrate, and the cavity is provided with an inner cover capable of closing the opening.

8. The plug with polarity detection function of claim 7, wherein the inner cover has a post on its inner surface, and the cavity has a socket adapted to the post.

9. The plug with polarity detection function according to any one of claims 1 to 8, wherein the housing is provided with recessed portions on both sides of the upper portion thereof.

10. The plug with polarity detection function according to any one of claims 1 to 8, wherein a handle is provided on the housing.

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