Power plug plastic housing with protective structure

Abstract

The utility model discloses a power plug plastic shell with protective structure, it includes the plastic shell, the inside fixedly connected with circuit board of plastic shell, the outer fixed surface of plastic shell is connected with the joint, the outer fixed surface of plastic shell is connected with the spile, the inside fixedly connected with guide rod of plastic shell. Through setting up guide rod, first spring, sliding block, plastic protective cover, slot, bolt column, fixed ring, hexagonal rotating block and third spring etc. structure, can in not influencing spile normal insertion socket's while, can ensure spile before completely inserted socket, always have plastic protective cover to spile unexposed part is shielded to spile half bare exposed risk of electrification is avoided, and cooperation sets up hole, cam block, limit block and second spring etc. structure, can after plug is pulled out to the protection of spile, thereby reduce the possibility of outside pollutant adhesion.

Description

Technical Field

[0001] This utility model relates to the field of power plug technology, and in particular to a plastic shell for a power plug with a protective structure. Background Technology

[0002] In daily life and industrial production, power plugs are key connectors for power transmission, and their safety and durability directly affect the stable operation of electrical equipment and the personal safety of users. Currently, most power plugs on the market use a traditional fixed structure design with their plastic shells exposed, with the metal prongs simply covered by the outer shell.

[0003] However, this type of traditional structure has many significant drawbacks in actual use. For example, when a user inserts the plug into the socket, the metal prongs undergo a gradual insertion process. During this process, the prongs that are not fully inserted into the socket are always in a semi-exposed state. Once this exposed part comes into contact with the human body or other conductive objects, it can easily cause an electric shock accident. Secondly, after the plug is pulled out, the metal prongs of the traditional plug shell are completely exposed to the external environment. Dust, oil, and other pollutants in the air will directly adhere to the surface of the prongs. Over a long period of time, poor contact of the prongs can cause the electrical equipment to malfunction. Utility Model Content

[0004] The purpose of this utility model is to provide a plastic shell for a power plug with a protective structure. This shell can ensure that the plug is always covered by a plastic protective cover before it is fully inserted into the socket, without affecting the normal insertion of the plug into the socket. This avoids the risk of the plug being partially exposed and energized. It can also protect the plug after it is unplugged, thereby reducing the possibility of external contaminants adhering to it.

[0005] To achieve the above objectives, a plastic housing for a power plug with a protective structure is provided, comprising: A plastic casing includes a circuit board fixedly connected inside, a connector fixedly connected to the outer surface of the plastic casing, pins fixedly connected to the outer surface of the plastic casing, a guide rod fixedly connected inside the plastic casing, a first spring provided on the outer surface of the guide rod, a slider slidably connected to the outer surface of the guide rod, a plastic protective cover fixedly connected to the upper surface of the slider, a through hole provided on the outer surface of the plastic protective cover, an arc-shaped stop block slidably connected inside the plastic protective cover, a limit block fixedly connected to the outer surface of the arc-shaped stop block, a second spring fixedly connected to the outer surface of the limit block, a slot provided on the outer surface of the plastic protective cover, a pin slidably connected inside the plastic casing, a retaining ring fixedly connected to the outer surface of the pin, a hexagonal rotating block fixedly connected to one end of the pin, and a third spring provided on the outer surface of the pin.

[0006] According to the aforementioned plastic housing for a power plug with a protective structure, the front end of the first spring is fixedly connected to the slider, and the rear end of the first spring is fixedly connected to the plastic housing.

[0007] According to the aforementioned power plug plastic housing with protective structure, the outer surface of the plastic protective cover is slidably connected to the plastic housing.

[0008] According to the aforementioned plastic housing of a power plug with a protective structure, the inner surface of the through hole is adapted to the pins.

[0009] According to the aforementioned power plug plastic shell with protective structure, the number of arc-shaped blocks is two and they are symmetrically distributed on the left and right, and the outer surface of the limiting block is slidably connected to the plastic protective cover.

[0010] According to the aforementioned plastic housing of a power plug with a protective structure, the inner surface of the slot is adapted to the pin, and the outer surface of the plastic protective cover is in contact with the pin.

[0011] According to the aforementioned power plug plastic housing with protective structure, the outer surface of the retaining ring is slidably connected to the plastic housing.

[0012] According to the aforementioned plastic housing for a power plug with a protective structure, one end of the third spring is fixedly connected to a retaining ring, and the other end of the third spring is fixedly connected to the plastic housing.

[0013] The above-mentioned solution has the following beneficial effects: By incorporating a guide rod, a first spring, a slider, a plastic protective cover, a slot, a pin post, a retaining ring, a hexagonal rotating block, and a third spring, the system ensures that the plug can be inserted into the socket normally without affecting the normal insertion of the plug. This ensures that the plastic protective cover always shields the unexposed parts of the plug before it is fully inserted, thus preventing the risk of the plug being partially exposed and energized. Furthermore, the inclusion of through holes, curved blocks, limit blocks, and a second spring protects the plug after it is removed, reducing the possibility of external contaminants adhering to it.

[0014] 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

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of a plastic shell for a power plug with a protective structure according to this utility model; Figure 2 This is a schematic diagram showing the storage state of the protective cover of the plastic shell of a power plug with a protective structure according to this utility model. Figure 3 This is a cross-sectional view of the overall structure of the plastic shell of a power plug with a protective structure according to this utility model. Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 This is a longitudinal sectional view of the overall structure of the plastic shell of a power plug with a protective structure according to this utility model.

[0016] Legend: The components are as follows: 1. Plastic shell; 2. Circuit board; 3. Connector; 4. Pin; 5. Guide rod; 6. First spring; 7. Slider; 8. Plastic protective cover; 9. Through hole; 10. Arc-shaped stop block; 11. Limiting block; 12. Second spring; 13. Slot; 14. Pin post; 15. Retaining ring; 16. Hexagonal rotating block; 17. Third spring. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. The 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 the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0018] Reference Figure 1-5This utility model discloses a plastic housing for a power plug with a protective structure, comprising: a plastic housing 1; a circuit board 2 fixedly connected inside the plastic housing 1; a connector 3 fixedly connected to the outer surface of the plastic housing 1; pins 4 fixedly connected to the outer surface of the plastic housing 1; a guide rod 5 fixedly connected inside the plastic housing 1; a first spring 6 provided on the outer surface of the guide rod 5; a slider 7 slidably connected to the outer surface of the guide rod 5; a plastic protective cover 8 fixedly connected to the upper surface of the slider 7; a through hole 9 provided on the outer surface of the plastic protective cover 8; an arc-shaped stop 10 slidably connected inside the plastic protective cover 8; a limit block 11 fixedly connected to the outer surface of the arc-shaped stop 10; a second spring 12 fixedly connected to the outer surface of the limit block 11; a slot 13 provided on the outer surface of the plastic protective cover 8; a pin 14 slidably connected inside the plastic housing 1; a fixing ring 15 fixedly connected to the outer surface of the pin 14; and a hexagonal rotating block 16 fixedly connected to one end of the pin 14. A third spring 17 is provided on the outer surface of 14. The front end of the first spring 6 is fixedly connected to the slider 7, and the rear end of the first spring 6 is fixedly connected to the plastic shell 1 to ensure the stability of the first spring 6. The outer surface of the plastic protective cover 8 is slidably connected to the plastic shell 1 for the movement of the plastic protective cover 8. The inner surface of the through hole 9 is adapted to the pin 4 to facilitate the pin 4 to pass through. There are two arc-shaped stop blocks 10, which are symmetrically distributed on the left and right. The outer surface of the limiting block 11 is slidably connected to the plastic protective cover 8 to limit the movement of the limiting block 11. The inner surface of the slot 13 is adapted to the pin post 14. The outer surface of the plastic protective cover 8 is in contact with the pin post 14 to facilitate the temporary limitation of the plastic protective cover 8 after retraction. The outer surface of the fixing ring 15 is slidably connected to the plastic shell 1 to limit the movement of the fixing ring. One end of the third spring 17 is fixedly connected to the fixing ring 15, and the other end of the third spring 17 is fixedly connected to the plastic shell 1 to ensure the stability of the third spring.

[0019] Working principle: In use, align pin 4 with the interface on the socket and insert it. During insertion, pin 4 first passes through the through hole 9, and under the action of the curved surface of the curved stop 10, it causes the two curved stop blocks 10 to retract into the interior of the plastic protective cover 8. Simultaneously, the second spring 12 is compressed. Then, under the action of the slider 7, the plastic protective cover 8 moves along the first spring 6 towards the interior of the plastic outer shell 1, compressing the first spring 6. When pin 4 is fully inserted into the socket, it will... Figure 2As shown, at this time, the slot 13 will correspond to the pin 14. Then, under the action of the rebound force of the third spring 17 in the compressed state, the pin 14 will automatically insert into the slot 13, thereby temporarily limiting the plastic protective cover 8. During the process of inserting the plug 4 into the socket, the plastic protective cover 8 will continuously cover the part of the plug 4 that is not inserted into the socket, thereby ensuring that there is no risk of the plug 4 being partially exposed and powered throughout the process. When the plug is completely pulled out, pull the hexagonal rotating block 16 outward. Under the action of the rebound force of the first spring 6 and the second spring 12, the plastic protective cover 8 and the arc-shaped stop block 10 will automatically reset, thereby covering and protecting the plug 4 to reduce the situation where external contaminants adhere and affect the normal use of the plug.

[0020] In the description of this utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. At the same time, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "fixed installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] 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. A plastic housing for a power plug with a protective structure, comprising: A plastic shell (1) has a circuit board (2) fixedly connected inside it, a connector (3) fixedly connected to the outer surface of it, and pins (4) fixedly connected to the outer surface of it. The plastic shell (1) is characterized by having a guide rod (5) fixedly connected inside it, a first spring (6) on the outer surface of the guide rod (5), a slider (7) slidably connected to the outer surface of the guide rod (5), a plastic protective cover (8) fixedly connected to the upper surface of the slider (7), and a through hole (9) on the outer surface of the plastic protective cover (8). The plastic protective cover (8) has an arc-shaped stop block (10) slidably connected inside. The outer surface of the arc-shaped stop block (10) is fixedly connected to a limit block (11). The outer surface of the limit block (11) is fixedly connected to a second spring (12). The outer surface of the plastic protective cover (8) is provided with a slot (13). The plastic shell (1) has a pin (14) slidably connected inside. The outer surface of the pin (14) is fixedly connected to a fixing ring (15). One end of the pin (14) is fixedly connected to a hexagonal rotating block (16). The outer surface of the pin (14) is provided with a third spring (17).

2. The plastic housing of a power plug with a protective structure according to claim 1, characterized in that, The front end of the first spring (6) is fixedly connected to the slider (7), and the rear end of the first spring (6) is fixedly connected to the plastic shell (1).

3. The plastic housing of a power plug with a protective structure according to claim 1, characterized in that, The outer surface of the plastic protective cover (8) is slidably connected to the plastic shell (1).

4. The plastic housing of a power plug with a protective structure according to claim 1, characterized in that, The inner surface of the through hole (9) is adapted to the pin (4).

5. The plastic housing of a power plug with a protective structure according to claim 1, characterized in that, The number of the arc-shaped stop blocks (10) is two and they are symmetrically distributed on the left and right. The outer surface of the limiting block (11) is slidably connected to the plastic protective cover (8).

6. The plastic housing of a power plug with a protective structure according to claim 1, characterized in that, The inner surface of the slot (13) is adapted to the pin (14), and the outer surface of the plastic protective cover (8) is in contact with the pin (14).

7. The plastic housing of a power plug with a protective structure according to claim 1, characterized in that, The outer surface of the fixing ring (15) is slidably connected to the plastic shell (1).

8. The plastic housing of a power plug with a protective structure according to claim 1, characterized in that, One end of the third spring (17) is fixedly connected to the fixing ring (15), and the other end of the third spring (17) is fixedly connected to the plastic shell (1).

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