CN114267984B - Waterproof electric connector of USB - Google Patents

Abstract

The invention relates to a USB waterproof electric connector, which comprises an insulating body and a metal shell connected with one end of the insulating body, wherein a sealing component is detachably fixed on the outer side of the metal shell, a contact piece for completing electric connection and data transmission is arranged in the insulating body, an insulating block is fixedly connected to one inner side wall of the metal shell, a conductive terminal connected with the contact piece is arranged in the insulating block, and a jack is formed between the upper side of the insulating block and the inner wall of the metal shell. The sealing assembly comprises a protection shell and a plug-in block fixed inside the protection shell, when the protection shell is mounted on the metal shell, the plug-in block is inserted into the jack, and the metal shell is embedded inside the protection shell and in interference fit with the inner wall of the protection shell. Install the protection casing on metal casing for the grafting piece is inserted and is established in the jack, has realized the protection casing to the omnidirectional parcel of metal casing, has effectually protected USB electric connector, has improved life.

Description

A USB waterproof electrical connector

technical field

The invention relates to the technical field of USB electrical connectors, in particular to a USB waterproof electrical connector.

Background technique

Universal Serial Bus (USB) is a very common connection interface at present. Due to the various types and diverse structures of the existing USB connectors, it is widely used in many electronic communication industries such as computer peripherals.

In the prior art, a USB electrical connector is generally composed of an insulating body and a metal shell installed at one end of the insulating body. When using a USB electrical connector to charge an electronic device, one end of the USB cable is usually connected to the device, and the other end, which is the metal shell of the USB electrical connector, is plugged into the power adapter for charging. When the USB electrical connector is used for data transmission, the metal shell of the USB electrical connector is inserted into the USB interface of a PC or other devices to realize data transmission.

The above-mentioned prior art solutions have the following defects: since the metal shells of almost all USB electrical connectors on the market are exposed, they will be exposed to the outside air when not in use. Due to various external unstable factors, it is easy to cause water to enter the interior of the metal shell, which in turn causes water to enter the electronic device inside the insulating body and cause a short circuit, resulting in damage to the USB electrical connector and reducing the service life.

Contents of the invention

Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a USB waterproof electrical connector. By setting a matching sealing component on the metal shell of the USB electrical connector, the USB electrical connector can be The interior of the metal shell is not easy to enter water, which enhances the waterproof capability of the USB electrical connector and has the effect of improving the service life.

Above-mentioned purpose of the invention of the present invention is achieved through the following technical solutions:

A USB waterproof electrical connector, comprising an insulating body and a metal shell connected to one end of the insulating body, a sealing assembly is detachably fixed on the outside of the metal shell, and a sealing assembly is provided inside the insulating body for completing the electrical connection. A contact piece for connection and data transmission, an insulating block is fixedly connected to one of the inner side walls of the metal housing, and a conductive terminal connected to the contact piece is installed in the insulating block, and the upper part of the insulating block is connected to the A socket is formed between the inner walls of the metal shell;

The sealing assembly includes a protective shell and a socket block fixed inside the protective shell, when the protective shell is installed on the metal shell, the socket block is inserted into the socket , the metal shell is embedded in the inside of the protective shell and has an interference fit with the inner wall of the protective shell.

Through the above technical solution, when the USB electrical connector is not used, the protective shell is installed on the metal shell, so that the plug-in block is inserted into the jack, and the protective shell wraps the metal shell in all directions. , avoiding the phenomenon of short circuit caused by external moisture entering the metal shell, effectively protecting the USB electrical connector and improving the service life. The outer wall of the metal shell is in interference fit with the inner wall of the protective shell, and on the basis of improving the sealing performance of the connection between the two, it is convenient to insert and remove the sealing component. When using the USB electrical connector, the sealing assembly is pulled out from the metal shell, and the metal shell is inserted into the USB interface so that the conductive terminal is in contact with the pin in the interface, and the connection between the contact and the pin is realized. It is convenient for charging or data transmission. The USB electrical connection has strong water resistance, simple structure and convenient use, and has strong economic promotion value.

In a preferred example, the present invention can be further configured as follows: a rubber ring is installed on the outside of the end of the protective shell close to the insulating body, and a rubber ring is fixed on the outside of the end of the insulating body close to the metal shell. metal toothed pads that match the rubber rings described above.

Through the above technical solution, when the protective shell is installed on the metal shell, when the protective shell is pressed, the rubber ring is pressed into the tooth gap of the metal tooth-shaped pad, and a thickness of 0.05mm is left at the tip of the tooth. In order to fill the defect of the sealing surface of the protective shell, a sealing effect is produced, thereby enhancing the waterproofness of the USB electrical connector.

In a preferred example, the present invention can be further configured as: a first shielding block is fixedly connected to the end of the plug-in block away from the protective shell, a first magnet is installed in the first shielding block, and the insulating A groove is opened on the body, and a second shielding block is fixedly connected to the bottom of the groove, and a second magnet that is adsorbed and connected to the first magnet is installed in the second shielding block.

Through the above technical solution, the first magnet and the second magnet are respectively arranged in the first shielding block and the second shielding block, thereby avoiding the influence of the magnets on the electronic components inside the USB electrical connector. At the same time, when the protective shell is installed on the metal shell, the first magnet and the second magnet are attracted to each other, so that the connection between the sealing assembly and the insulating body is more stable. Moreover, the rubber ring can be stably pressed into the tooth space of the metal toothed pad, which further increases the sealing effect and greatly improves the water resistance.

In a preferred example, the present invention can be further configured as follows: a bracket is installed inside the insulating body, a plastic sheath is wrapped on the outside of the contact piece, and the plastic sheath is interference-fitted with the inner wall of the bracket.

Through the above technical solution, the bracket ensures the structural strength of the insulating body, and the plastic jacket wraps the contact piece and has an interference fit with the inner wall of the bracket, so that dust and water are not easy to enter the inside of the contact piece, so that the USB electrical connector has a relatively high performance. Good waterproof and dustproof function, better adapted to the development trend.

In a preferred example, the present invention can be further configured as: a shielding layer is fixedly connected to the outer side of the bracket, and a fireproof layer is fixedly connected to the outer side of the shielding layer.

Through the above technical solution, the shielding layer can shield the influence of external electromagnetic signals on the contacts in the USB connector, thereby improving the working stability of the USB connector. The fireproof layer has good high temperature resistance, which enables the USB electrical connector to adapt to various harsh operating environments, effectively protects the USB electrical connector, and improves practicability.

In a preferred example, the present invention can be further configured as follows: an electronic wire is connected to the end of the contact member away from the conductive terminal, the electronic wire passes through the insulating body, and the outer side of the insulating body is connected to the electronic wire. A sealing ring is installed at the line.

Through the above technical solution, the sealing ring increases the sealing performance of the insulating body at the position where the electronic wire passes through, thereby further improving the waterproofness of the USB electrical connector.

In summary, the present invention includes at least one of the following beneficial technical effects:

1. When the USB electrical connector is not used, the protective shell is installed on the metal shell so that the plug-in block is inserted into the jack, so that the protective shell wraps the metal shell in all directions, avoiding the Moisture from the outside enters into the metal shell to cause a short circuit, which effectively protects the USB electrical connector and improves the service life. The outer wall of the metal shell is in interference fit with the inner wall of the protective shell, and on the basis of improving the sealing performance of the connection between the two, it is convenient to insert and remove the sealing component.

When using the USB electrical connector, the sealing assembly is pulled out from the metal shell, and the metal shell is inserted into the USB interface so that the conductive terminal is in contact with the pin in the interface, and the connection between the contact and the pin is realized. It is convenient for charging or data transmission. The USB electrical connection has strong water resistance, simple structure and convenient use, and has strong economic promotion value.

2. When the protective shell is installed on the metal shell, when the protective shell is pressed, the rubber ring is pressed into the tooth gap of the metal tooth pad, and a thickness of 0.05mm is left at the tip of the tooth to fill the protection The defect of the sealing surface of the shell produces a sealing effect, thereby enhancing the waterproofness of the USB electrical connector.

3. The bracket ensures the structural strength of the insulating body, and the plastic jacket wraps the contact and fits tightly with the inner wall of the bracket, so that dust and water are not easy to enter the inside of the contact, so that the USB electrical connector has better waterproof The dustproof function better adapts to the development trend.

Description of drawings

Fig. 1 is a sectional view of the present invention.

Reference signs: 1. Insulation body; 11. Contact piece; 12. Metal tooth pad; 13. Second shielding block; 131. Second magnet; 14. Bracket; 15. Plastic jacket; 16. Shielding layer; 17. Fireproof layer; 18. Electronic wire; 19. Sealing ring; 2. Metal shell; 21. Insulation block; 22. Conductive terminal; 3. Sealing component; 31. Protective shell; 32. Plug-in block; 33. Rubber ring ; 34, the first shielding block; 341, the first magnet.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Referring to Fig. 1, it is a USB waterproof electrical connector disclosed by the present invention, which includes an insulating body 1 and a metal shell 2 connected to one end of the insulating body 1, and a sealing assembly 3 is detachably fixed on the outer side of the metal shell 2. The inside of the body 1 is provided with a contact piece 11 for completing electrical connection and data transmission, and an insulating block 21 is fixedly connected to one of the inner side walls of the metal shell 2, and a conductive terminal 22 connected to the contact piece 11 is installed in the insulating block 21 , An insertion hole is formed between the top of the insulating block 21 and the inner wall of the metal casing 2 . The sealing assembly 3 includes a protective shell 31 and a plug-in block 32 fixed inside the protective shell 31. When the protective shell 31 is installed on the metal shell 2, the plug-in block 32 is inserted into the jack, and the metal shell 2 It is embedded in the protective shell 31 and is interference fit with the inner wall of the protective shell 31 .

Wherein, referring to FIG. 1 , a rubber ring 33 is installed on the outer side of the protective shell 31 near one end of the insulating body 1 , and a metal toothed pad 12 matching the rubber ring 33 is fixed on the outer side of the insulating body 1 near one end of the metal shell 2 . When the protective shell 31 is installed on the metal shell 2, when the protective shell 31 is pressed, the rubber ring 33 is pressed into the tooth space of the metal tooth-shaped pad 12, leaving a thickness of 0.05mm at the tip of the tooth, The defect of the sealing surface of the protective housing 31 is filled to produce a sealing effect, thereby enhancing the waterproofness of the USB electrical connector.

Further, the end of the plug-in block 32 away from the protective shell 31 is fixedly connected with the first shielding block 34, the first magnet 341 is installed in the first shielding block 34, a groove is opened on the insulating body 1, and the bottom of the groove is fixed The second shielding block 13 is connected, and the second magnet 131 is installed in the second shielding block 13 and connected with the first magnet 341 by suction. The first magnet 341 and the second magnet 131 are arranged in the first shielding block 34 and the second shielding block 13 respectively, so as to avoid the influence of the magnets on the internal electronic components of the USB electrical connector. At the same time, when the protective shell 31 is installed on the metal shell 2, the first magnet 341 and the second magnet 131 are attracted to each other, so that the connection between the sealing assembly 3 and the insulating body 1 is more stable. Moreover, the rubber ring 33 can be stably pressed into the tooth space of the metal tooth-shaped pad 12, which further increases the sealing effect and greatly improves the waterproofness.

Referring to FIG. 1 , a bracket 14 is installed inside the insulating body 1 , and a plastic jacket 15 is wrapped on the outside of the contact piece 11 , and the plastic jacket 15 is in interference fit with the inner wall of the bracket 14 . The bracket 14 ensures the structural strength of the insulating body 1, and the plastic jacket 15 wraps the contact piece 11 and has an interference fit with the inner wall of the bracket 14, so that dust and water are not easy to enter the inside of the contact piece 11, so that the USB electrical connector has better performance. Excellent waterproof and dustproof function, better adapted to the development trend.

Further, the end of the contact piece 11 away from the conductive terminal 22 is connected with an electronic wire 18 , and the electronic wire 18 passes through the insulating body 1 , and a sealing ring 19 is installed on the outer side of the insulating body 1 at the electronic wire 18 . The sealing ring 19 increases the sealing performance of the insulating body 1 at the position where the electronic wire 18 passes through, thereby further improving the waterproofness of the USB electrical connector.

The outer side of the bracket 14 is fixedly connected with a shielding layer 16, and the outer side of the shielding layer 16 is fixedly connected with a fireproof layer 17. In this embodiment, the shielding layer 16 is preferably made of metal foil material, and the fireproof layer 17 is preferably made of phlogopite. Mica can withstand high temperatures of 1000 degrees, so it will not be destroyed by fire. The shielding layer 16 can shield the influence of external electromagnetic signals on the contacts 11 in the USB connector, and improve the working stability of the USB connector. The fireproof layer 17 has better high temperature resistance, which enables the USB electrical connector to adapt to various harsh environments, effectively protects the USB electrical connector, and improves practicability.

The implementation principle of this embodiment is: when the USB electrical connector is not used, the protective shell 31 is installed on the metal shell 2, so that the plug block 32 is inserted in the jack, and the protective shell 31 is realized. The all-round wrapping of the metal shell 2 prevents the phenomenon of short circuit caused by external moisture entering the metal shell 2, effectively protects the USB electrical connector, and improves the service life. The outer wall of the metal shell 2 is in interference fit with the inner wall of the protective shell 31 , which facilitates the insertion and removal of the sealing assembly 3 on the basis of improving the sealing performance of the connection between the two.

When using the USB electrical connector, the sealing assembly 3 is pulled out from the metal shell 2, and the metal shell 2 is inserted into the USB interface so that the conductive terminal 22 is in contact with the pins in the interface, and the contacts 11 and the pins in the interface are realized. The connection of pins is convenient for charging or data transmission. The USB electrical connection has strong water resistance, simple structure and convenient use, and has strong economic promotion value.

The embodiments of this specific implementation mode are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the present invention should be covered by within the protection scope of the present invention.

Claims (4)

1. The utility model provides a waterproof electric connector of USB, includes insulator (1) and with metal casing (2) that one end of insulator (1) is connected, its characterized in that: the device comprises a metal shell (2), wherein a sealing assembly (3) is detachably fixed on the outer side of the metal shell (2), a contact (11) for completing electric connection and data transmission is arranged in the insulation body (1), an insulation block (21) is fixedly connected to one of the inner side walls of the metal shell (2), a conductive terminal (22) connected with the contact (11) is arranged in the insulation block (21), and an inserting hole is formed between the upper side of the insulation block (21) and the inner wall of the metal shell (2);

the sealing assembly (3) comprises a protection shell (31) and a plug-in block (32) fixed inside the protection shell (31), when the protection shell (31) is installed on the metal shell (2), the plug-in block (32) is inserted into the jack, and the metal shell (2) is embedded inside the protection shell (31) and in interference fit with the inner wall of the protection shell (31);

a rubber ring (33) is arranged on the outer side of one end, close to the insulating body (1), of the protective shell (31), and a metal tooth-shaped pad (12) matched with the rubber ring (33) is fixed on the outer side of one end, close to the metal shell (2), of the insulating body (1);

the utility model discloses a protection casing, including protection casing (31) and insulator, including grafting piece (32), first shielding piece (34) of one end fixedly connected with of protection casing (31), install first magnet (341) in first shielding piece (34), set up flutedly on insulator (1), the bottom fixedly connected with second shielding piece (13) of recess, install in second shielding piece (13) with second magnet (131) that first magnet (341) adsorb and be connected.

2. The USB waterproof electrical connector of claim 1, wherein: the insulation body is characterized in that a support (14) is arranged in the insulation body (1), a plastic jacket (15) is wrapped on the outer side of the contact (11), and the plastic jacket (15) is in interference fit with the inner wall of the support (14).

3. A USB waterproof electrical connector according to claim 2, wherein: the outside fixedly connected with shielding layer (16) of support (14), the outside fixedly connected with flame retardant coating (17) of shielding layer (16).

4. A USB waterproof electrical connector according to claim 3, wherein: one end of the contact piece (11) far away from the conductive terminal (22) is connected with an electronic wire (18), the electronic wire (18) penetrates out of the insulating body (1), and a sealing ring (19) is arranged on the outer side of the insulating body (1) at the electronic wire (18).

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