Plug connector for electric appliance

Abstract

The utility model discloses a plug connector for electric appliances, which comprises a male connector body and a female connector body, the opposite ends of the male connector body and the female connector body are provided with connecting seats, the two sides of the middle part of each connecting seat are provided with threading holes, and the outer sides of the two connecting seats are fixedly sleeved with injection molding protective sleeves. A wire is arranged on the inner side of the injection molding protective sleeve, a bent protective sleeve is arranged on the outer side of the end, close to the injection molding protective sleeve, of the wire, and a slot sleeve is arranged at the end, close to the female head body, of the male head body. According to the utility model, the rectangular limiting groove and the rectangular limiting strip are arranged between the slot sleeve and the insertion block, compared with the original arc-shaped notch, the creepage gap distance can be increased by extending in the longitudinal direction and the transverse direction of the arc, and the creepage distance increasing condition caused by the high-humidity environment can be adapted.

Description

Technical Field

[0001] This utility model relates to the field of plug-in technology, and in particular to an electrical plug-in. Background Technology

[0002] In the production and sale of electrical appliances, in order to facilitate sales and customer selection, the various components of some electrical appliances are often designed with independent packaging in a modular way so that customers can mix and match them themselves. The various modules are generally connected by connectors, including power plugs and sockets, which are male connectors with rod-shaped or copper plate-shaped protrusions and female connectors with slots or recesses. In environments with high humidity, or when the surface is covered with dirt, the live metal parts and the insulating material will produce a phenomenon of electric arcs like water ripples crawling along the outer skin. This phenomenon is called creepage, which will lead to insulation damage over time.

[0003] Existing electrical connectors typically have an arc-shaped groove on the female end. This groove serves to limit the insertion of the male and female connectors and also increases the creepage distance, reducing the probability of creepage. However, when electrical appliances are in humid environments such as bathrooms or toilets for extended periods, the creepage distance increases. The existing arc-shaped groove is insufficient to meet the requirements for reducing creepage and has room for further improvement. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide an electrical plug connector that solves the above-mentioned problem.

[0005] To achieve the above objectives, an electrical connector is provided, comprising a male connector body and a female connector body. Each of the male and female connector bodies has a connector base at one end. Both connector bases have wire-passing holes on both sides of their middle portions. A molded protective sleeve is fixedly fitted onto the outer side of each connector base. A wire is provided inside the molded protective sleeve. A bending protective sleeve is provided on the outer side of the end of the wire near the molded protective sleeve. A slot sleeve is provided at the end of the male connector body near the female connector body. A connecting latch is fixedly connected to the middle of one side of the slot sleeve. A connecting plate is fixedly connected to the female connector body at a position corresponding to the connecting latch. An insertion block is provided at the end of the female connector body near the male connector body.

[0006] The male connector body has power pins fixedly connected to both sides inside the slot sleeve. The insertion block has power sockets at the positions corresponding to the two power sockets at one end near the male connector body. The insertion block has a rectangular limiting groove in the middle of the side near the connecting plate. The slot sleeve has a rectangular limiting strip fixedly connected to the middle of the side near the connecting slot. Both sides of the rectangular limiting groove and the rectangular limiting strip are provided with rounded corners.

[0007] According to the aforementioned electrical connector, the shape, size, and length of the insertion block correspond to the inner shape and depth of the slot sleeve.

[0008] According to the aforementioned electrical connector, the bending protective sleeve has bending buffer grooves on both sides and both sides.

[0009] According to the aforementioned electrical connector, one end of the injection-molded protective sleeve is integrally formed with the bending protective sleeve.

[0010] According to the aforementioned electrical connector, both of the wires are two-core wires, and each core wire is electrically connected to a corresponding power socket and power connection hole.

[0011] According to the aforementioned electrical connector, both of the two connectors have arc-shaped grooves in the middle of their respective ends away from the bending protective sleeve, and the internal shape of the injection-molded protective sleeve corresponds to the shape of the connector.

[0012] The above solution has at least one of the following beneficial effects:

[0013] 1. The male and female heads of this utility model are equipped with slot sleeves and insertion blocks. Compared with the existing method of directly inserting the power pin into the power socket, an additional layer of indirect isolation can be added to hide the male and female head joints where the power pin can be exposed, avoiding direct contact with the humid environment. With the help of the connecting bayonet and connecting plate, a certain degree of stable connection capability can be provided, ensuring the stability of the internal environment and reducing the intrusion of dirt. At the same time, the rectangular limiting groove and rectangular limiting strip set between the slot sleeve and the insertion block, compared with the original arc-shaped groove, can increase the creepage gap distance by extending the arc in the longitudinal and transverse directions. This can adapt to the situation where the creepage distance increases due to high humidity environment, thus enhancing the practicality of the device.

[0014] 2. The connectors of this utility model are provided with an arc-shaped groove at the middle position of the end. Without affecting the wire hole, the connection strength between the injection molded protective sleeve and the male and female heads can be improved by increasing the injection depth of the injection molded protective sleeve, thereby enhancing the practicality of the device.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a front perspective view of an electrical plug according to the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the back of an electrical plug according to the present invention;

[0019] Figure 3 This is a side view of the electrical plug connector of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the male and female heads of this utility model.

[0021] Legend:

[0022] 1. Male connector body; 2. Female connector body; 3. Connector; 4. Wire hole; 5. Injection molded protective sleeve; 6. Wire; 7. Bending protective sleeve; 8. Slot sleeve; 9. Power connector pin; 10. Insertion block; 11. Power connector socket; 12. Rectangular limiting groove; 13. Rectangular limiting strip; 14. Rounded corner edge; 15. Connecting bayonet; 16. Connecting plate. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. Preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present utility model. The drawings are all in a very simplified form and use non-precise proportions. They are only used to help to explain the embodiments of the present utility model in a convenient and clear way, and should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1-4 This utility model provides an electrical connector, including a male connector body 1 and a female connector body 2. Each of the male connector body 1 and the female connector body 2 has a connecting seat 3 at one end. Both sides of the middle of the two connecting seats 3 have wire holes 4. A molded protective sleeve 5 is fixedly fitted onto the outer side of each of the two connecting seats 3. A wire 6 is provided inside the molded protective sleeve 5. A bending protective sleeve 7 is provided on the outer side of the end of the wire 6 closest to the molded protective sleeve 5. Bending buffer grooves are provided on both sides and sides of the bending protective sleeve 7. One end of the molded protective sleeve 5 is integrally injection molded with the bending protective sleeve 7. Arc-shaped grooves are provided in the middle of both sides of the end of each connecting seat 3 away from the bending protective sleeve 7. The internal shape of the molded protective sleeve 5 corresponds to the shape of the connecting seat 3. By increasing the injection depth of the molded protective sleeve 5 without affecting the wire holes, the connection strength between the molded protective sleeve 5 and the male / female connector can be improved.

[0025] The male head body 1 is provided with a slot sleeve 8 at one end near the female head body 2. A connecting slot 15 is fixedly connected to the middle of one side of the slot sleeve 8. A connecting plate 16 is fixedly connected to the female head body 2 at the position corresponding to the connecting slot 15. An insertion block 10 is provided at one end of the female head body 2 near the male head body 1. The shape, size and length of the insertion block 10 correspond to the inner shape and depth of the slot sleeve 8. Compared with the existing method of directly inserting the power pin 9 into the power socket 11, the male and female head joint that can expose the power pin 9 is hidden, which can add an extra layer of indirect isolation to avoid direct contact with the humid environment. With the connection slot 15 and the connecting plate 16, a certain stable connection capability can be provided to ensure the stability of the internal environment and reduce the intrusion of dirt.

[0026] The male connector body 1 has two electrical pins 9 fixedly connected inside the slot sleeve 8 on both sides. The diameter of the two electrical pins 9 is 0.5 mm and the center-to-center distance is 8.56 mm. The insertion block 10 has electrical sockets 11 at the positions corresponding to the two electrical sockets 11 on one end near the male connector body 1. Both wires 6 are two-core wires, and each core wire is electrically connected to the corresponding electrical socket 11. A rectangular limiting groove 12 is formed in the middle of the side of the insertion block 10 near the connecting plate 16. The groove is 4.1 mm wide, and the distance between the bottom of the rectangular limiting groove 12 and the line connecting the centers of the two electrical sockets 11 is... The creepage gap is 1.4 mm. Inside the slot sleeve 8, a rectangular limiting strip 13 is fixedly connected to the middle of the side near the connecting slot 15. The limiting strip is 3.5 mm wide. At the same time, the distance between the bottom of the rectangular limiting strip 13 and the line connecting the centers of the two connecting pins 9 is 1.9 mm. Both sides of the rectangular limiting groove 12 and the rectangular limiting strip 13 are provided with rounded corner edges 14. The radius of the rounded corner edges 14 corresponds to the radius of the original arc-shaped groove. Compared with the original arc-shaped groove, the creepage gap distance can be increased by extending the arc in the longitudinal and transverse directions, which can adapt to the situation where the creepage distance increases due to high humidity environment.

[0027] Working principle: Compared with the existing method of directly inserting the power connector 9 into the power connector socket 11, this utility model hides the male and female joint of the power connector 9, which can expose the power connector 9. This adds an extra layer of indirect isolation, avoiding direct contact with the humid environment. With the connection bayonet 15 and the connection plate 16, it can provide a certain degree of stable connection capability, ensure the stability of the internal environment, and reduce the intrusion of dirt. At the same time, the rectangular limiting groove 12 and the rectangular limiting strip 13 set between the slot sleeve 8 and the insertion block 10, compared with the original arc-shaped groove, can increase the creepage gap distance by extending the arc in the longitudinal and transverse directions, which can adapt to the situation where the creepage distance increases due to high humidity environment.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An electrical connector for an electrical appliance comprising a male body (1) and a female body (2), characterised in that: The male head body (1) and the female head body (2) are provided with connecting seats (3) at opposite ends, the middle portions of the two connecting seats (3) are provided with wire holes (4) on both sides, the outer sides of the two connecting seats (3) are fixedly sleeved with injection molding protective sleeves (5), the inner sides of the injection molding protective sleeves (5) are provided with wires (6), the outer sides of the wires (6) near the injection molding protective sleeves (5) are provided with bending protective sleeves (7), the male head body (1) is provided with a slot sleeve (8) at one end near the female head body (2), one side of the slot sleeve (8) is fixedly connected with a connecting bayonet (15) in the middle portion, the female head body (2) is fixedly connected with a connecting clamping plate (16) at a position corresponding to the connecting bayonet (15), and the female head body (2) is provided with an insertion block (10) at one end near the male head body (1). The male head body (1) is fixedly connected with power supply pins (9) on both sides in the slot sleeve (8), the insertion block (10) is provided with power supply sockets (11) at positions corresponding to the two power supply sockets (11) at one end near the male head body (1), the insertion block (10) is provided with a rectangular limiting groove (12) in the middle portion of one side near the connecting clamping plate (16), the slot sleeve (8) is fixedly connected with a rectangular limiting strip (13) in the middle portion of one side near the connecting bayonet (15), and the two sides of the rectangular limiting groove (12) and the rectangular limiting strip (13) are provided with rounded edges (14).

2. An electrical appliance plug according to claim 1, wherein The shape, size and length of the insertion block (10) correspond to the shape and depth of the inner side of the slot sleeve (8).

3. An electrical plug according to claim 1, wherein The bending buffering grooves are formed in the two sides and the two edges of the bending protective sleeve (7).

4. An electrical plug according to claim 1, wherein One end of the injection molding protective sleeve (5) is integrally formed with the bending protective sleeve (7).

5. The plug according to claim 1, wherein The two wires (6) are double-core wires, and the core wires are respectively electrically connected with the corresponding power supply sockets (11) and power supply sockets (11).

6. An electrical plug according to claim 1, wherein The middle portions of the two connecting seats (3) are provided with arc-shaped grooves on both sides away from the bending protective sleeve (7), and the inner shape of the injection molding protective sleeve (5) corresponds to the shape of the connecting seat (3).

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