CN105428864A - Firm-to-clamp USB plug and manufacturing method thereof - Google Patents

Abstract

The invention discloses a firmly clamped USB plug and a manufacturing method thereof. The plug includes a plug body and a socket. The socket is provided with at least one positioning hole. The positioning hole is provided with a clamping shrapnel, and the snapping shrapnel is close to the positioning hole. The edges of one end of the socket are connected, and the clamping shrapnel protrudes upward from the plane of the socket where the positioning hole is located. The firmly clamped USB plug of the present invention adopts the method of clamping and clamping the shrapnel, which can not only prevent the unintentional loosening and falling off of the USB interface, but also prevent attackers from maliciously pulling it out.

Description

A kind of USB plug with firm clamping and its manufacturing method

technical field

The invention relates to a connection device of an electronic device, in particular to a firmly clamped USB plug and a manufacturing method thereof.

Background technique

In applications such as industrial control and security, many USB devices are usually deployed, such as USB interface monitoring equipment required for security. Some devices must maintain a reliable connection to the host. In order to prevent loosening, falling off, unplugging by users by mistake, or damage by someone, it is very important for the USB interface to have reliable connection capabilities.

The connection mode that the traditional USB plug adopts is to set two positioning holes on the USB plug. When the plug is inserted into the bottom of the socket, the two positioning holes are engaged with the positioning springs in the USB socket to fix the USB plug.

However, this fixing method is very unreliable, because after the plug is inserted, the contact thickness between the positioning hole and the positioning spring piece of the socket is very small, and the resulting fixing force is also very small. In the actual application process, the user can easily pull out the USB plug, and the USB plug is also very easy to loosen under persistent vibration. Unable to achieve a reliable connection.

In confidential occasions, the monitoring device of the USB interface is used to monitor the file transfer of the USB interface so as to control the disclosure of confidential files of the host. However, in practical applications, an attacker can easily unplug the monitoring device from the host, and directly connect his own USB storage device to the host, resulting in the leakage of confidential files.

It follows that without a reliable connection method that prevents unplugging the USB plug, an attacker can easily bypass the monitoring device. In the field of industrial control, many industrial control devices are connected to the industrial control host through the USB interface. Because there are often huge mechanical vibrations and other interference factors in industrial control sites, under long-term vibrations, the USB interface may become loose or even fall off, causing losses to industrial production. Therefore, there is a need for a reliable USB plug that is securely snapped against falling off.

Contents of the invention

For the defects existing in the prior art mentioned in the background technology, the present invention proposes a USB plug with firm clamping and its manufacturing method. In order to achieve the purpose of the above invention, the present invention adopts the following technical solutions:

A USB plug with strong clamping connection, including a plug body and a socket. The socket is provided with at least one positioning hole, and the positioning hole is provided with a clamping shrapnel. The socket flat where the positioning hole is located protrudes upwards.

Further, the length of the sides of the clamping spring is 2-3 mm.

A method for manufacturing a firmly clamped USB plug, comprising the following steps:

Step 1, cut along the side parallel to the insertion direction of the positioning hole on the socket of the USB plug toward the direction of the USB socket;

Step 2, roll up the cut part parallel to the insertion direction to form a clip connected to the positioning hole.

Further, the length of the sides of the clamping spring is 2-3 mm.

The benefits of the present invention are:

1. The technical solution of the present invention adopts the method of clamping the shrapnel to be stuck, which can not only prevent the unintentional loosening and falling off of the USB interface, but also prevent the malicious removal of the attacker;

2. The realization of the present invention is relatively simple, as long as the positioning hole on the plug is cut and rolled up, it is not only suitable for mass production of this type of plug by the method of mass production, but in practical application, as long as there are needle-nose pliers This type of simple tool can also be quickly manufactured by hand;

3. The plug of the present invention is easy to manufacture and the cost is very low.

Description of drawings

FIG. 1 is a schematic diagram of a prior art USB plug;

Fig. 2 is the schematic diagram of the secure USB plug of the present application;

FIG. 3 is a schematic diagram of a USB socket.

detailed description

Hereinafter, the present invention will be described in detail with common embodiments of the present invention. It should be noted that the following embodiments are only used to illustrate the present invention rather than limit the present invention.

As shown in Figure 1-3, the existing USB plug includes a plug body and a socket. The socket is provided with positioning holes 1.1 and 1.2. When the plug is inserted into the USB socket, the positions of the positioning holes 1.1 and 1.2 are consistent with the positioning of the socket. The spring pieces 2.1 and 2.2 snap together to complete the connection between the plug and the socket.

However, due to the small contact thickness between the positioning holes 1.1 and 1.2 of the plug and the positioning springs 2.1 and 2.2, the clamping connection between the two is very weak, and it is easy to loosen in a long-term vibration environment. Man-made misplugging or damage.

As shown in Fig. 2, the secure USB plug of the present invention includes a plug body and a socket, the socket is also provided with positioning holes 3.1 and 3.2, and the positioning holes 3.1 and 3.2 are respectively provided with clips 4.1 and 4.2, The clamping springs 4.1, 4.2 are respectively connected to the edges of the positioning holes 3.1, 3.2 near the socket end, and the clamping springs 4.1, 4.2 protrude upward from the plane of the socket where the positioning holes 3.1, 3.2 are located.

When the firmly clamped USB plug moves toward the USB socket, the clamping springs 4.1, 4.2 first contact the positioning springs 2.1, 2.2 and conflict with the positioning springs 2.1, 2.2 to perform downward elastic deformation. After 4.1 and 4.2 have passed the positions of the positioning springs 2.1 and 2.2, the clamping springs 4.1 and 4.2 are reset to the original state and form a firm clamping connection with the space behind the positioning springs 2.1 and 2.2. The secure snap joint formed in this way cannot be pulled out by hand and will not cause loosening problems in vibration environments.

When it is really necessary to pull out the firmly locked USB plug, it can be done in a physical way, for example, you can use pliers to flatten the USB plug to make its thickness smaller, so that it can be pulled out from the USB socket smoothly.

The snap-on USB plug can be manufactured using the following steps:

Step 1: Cut along the sides parallel to the insertion direction of the positioning holes 3.1 and 3.2 on the socket of the USB plug toward the direction of the USB socket;

Step 2, roll up the cut part parallel to the insertion direction to form clips 4.1 and 4.2 connected to the positioning holes 3.1 and 3.2, and the side length of the clips is 2-3 mm.

The firmly clamping USB plug of the present invention has a good clamping effect, and is especially suitable for industrial control, security and other occasions. In the above-mentioned occasions, the cabinets are generally locked and only special management personnel can open them. This has ensured that the plug of the present invention will not be damaged or pulled out by irrelevant personnel.

The above-mentioned embodiments only express the implementation manner of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the patent of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (4)

1. a clamping firmly USB plug, comprise header body and socket, it is characterized in that, described socket is provided with at least one location hole, described location hole is provided with clamping shell fragment, described clamping shell fragment is connected near the limit of socket one end with described location hole, and described clamping shell fragment from the socket plane at hole place, described location upwardly.

2. clamping firmly USB plug as claimed in claim 1, it is characterized in that, the side edge length of described clamping shell fragment is 2-3 millimeter.

3. a manufacture method for clamping firmly USB plug, is characterized in that, comprise the following steps:

Step one, the side parallel with direction of insertion along the location hole on the socket of USB plug is cut off towards the direction of USB;

Step 2, scrolls up the part cut off in the mode being parallel to direction of insertion, and forms the clamping shell fragment be connected with described location hole.

4. the manufacture method of clamping as claimed in claim 3 firmly USB plug, it is characterized in that, the side edge length of described clamping shell fragment is 2-3 millimeter.