CN203826641U - Safety joint for experimental connection wires - Google Patents

Abstract

A safety joint for experimental wiring, including a plug matched with a conductive metal hole and a connecting wire connected to the plug, and an outer insulating cylinder, a spring and an inner insulating cylinder, the outer insulating cylinder is located on the outside of the plug and connected to the plug Form an integral structure, the inner insulating cylinder wraps the plug exposed outside the outer insulating cylinder and is arranged in the inner cavity of the outer insulating cylinder, the inner insulating cylinder can slide along the inner cavity of the outer insulating cylinder, and the spring is arranged on the inner insulating cylinder Between the end face and the outer insulating cylinder. The joint is not only safe and reliable in use, but also completely avoids short-circuit damage caused by careless operation; moreover, it does not need to refit the existing connecting hole button in the circuit board, so that the utility model is less expensive to be popularized and used, and is easy to realize. Thereby improving the utilization rate of experimental equipment and reducing equipment maintenance costs.

Description

A Safety Connector for Experimental Connection

technical field

The utility model relates to a circuit experiment connection line, in particular to a safety joint for an experiment connection line.

Background technique

In many experimental circuits, in order to allow students to recognize the appearance of electronic devices and facilitate testing, many experimental circuit boards deliberately install components and conductive metal hole buttons (hereinafter referred to as hole buttons) for wiring plugs. On the top of the circuit board, students can observe and learn various circuit functions by connecting these different hole buttons with wires. For the convenience of connection and operation, the common straight metal plugs for connecting wires are directly exposed. A little carelessness in operation will cause accidental short circuit events. The most common accidental short circuit has three situations: first, a single metal plug accidentally touches two conductive points on the circuit board at the same time; Three, the plug that has been inserted into the hole button is accidentally taken out from the hole button again, touching the irrelevant conductive point. Because in the experiment, sometimes there are a lot of connections, and some reach dozens. The more connections, the more likely accidental short-circuit events will occur. In mild cases, circuit devices will be damaged and experiments will be interrupted, which will not only affect normal teaching and increase equipment maintenance costs; in severe cases, it will even cause personal accidents and cause greater losses.

Utility model content

In order to solve the above technical problems, the utility model provides a safety joint for experimental connection, which is not only safe and reliable in use, but also completely avoids short-circuit damage caused by careless operation; moreover, it does not need to modify the existing connection hole button in the circuit board , so that the cost of popularizing and using the utility model is relatively low, and it is easy to realize. Thereby improving the utilization rate of experimental equipment and reducing equipment maintenance costs.

The technical solution adopted by the utility model is: a safety connector for experimental connection, including a plug matched with a conductive metal hole and a connecting wire for connecting the plug, and an outer insulating cylinder, a spring and an inner insulating cylinder are also provided. The outer insulating cylinder is located outside the plug and forms an integral structure with the plug. The inner insulating cylinder wraps the plug exposed outside the outer insulating cylinder and is arranged in the inner cavity of the outer insulating cylinder. The inner insulating cylinder can slide along the inner cavity of the outer insulating cylinder. The spring is arranged between the upper end surface of the inner insulating cylinder and the outer insulating cylinder.

To further optimize this solution, the outer insulating cylinder is composed of a cylinder body and an end cap connected to the port on one side of the cylinder body through fasteners, and a stepped portion is provided on the inner wall of the cylinder body.

To further optimize this solution, a boss is provided at one end of the inner insulating cylinder protruding into the inner cavity of the outer insulating cylinder, and the protruding length of the inner insulating cylinder is limited by the cooperation between the boss and the step portion of the outer insulating cylinder.

To further optimize this solution, the top of the inner insulating cylinder is provided with a slot for limiting the position of the spring.

The beneficial effects of the utility model are: the utility model is provided with an outer insulation cylinder and an inner insulation cylinder, and the outer insulation cylinder is located outside the plug and forms an integral structure with the plug, and the inner insulation cylinder wraps the exposed outside of the outer insulation cylinder. The plug is also arranged in the inner cavity of the outer insulating cylinder, and the spring is arranged between the upper end surface of the inner insulating cylinder and the outer insulating cylinder. The above structure realizes the safe and reliable use of the electric wire plug connector, and completely avoids short-circuit damage caused by inadvertent operation; Moreover, there is no need to refit the existing connecting hole button in the circuit board, so that the utility model is easy to implement with low cost for popularization and use. Thereby improving the utilization rate of experimental equipment and reducing equipment maintenance costs.

Description of drawings

Fig. 1 is a schematic diagram of the exploded structure of each component of the utility model.

Fig. 2 is a structural schematic diagram of the utility model in use.

Fig. 3 is a schematic structural diagram of the cooperation of the outer insulating cylinder and the inner insulating cylinder.

Fig. 4 is a top view of the inner insulating cylinder of the present invention.

Reference signs: 1, connecting wire, 2, outer insulation cylinder, 201, cylinder body, 202, step portion, 203, end cap, 3, plug, 4, spring, 5, top hole of inner insulation cylinder, 6, inner insulation Tube, 601, boss, 7, draw-in groove.

Detailed ways

    Below in conjunction with accompanying drawing the embodiment of the present utility model is described in detail, present embodiment is based on the premise of the utility model technical scheme, has provided detailed implementation and specific operation process, but the protection scope of the present utility model is not limited to the following the embodiment.

As shown in the figure, a safety connector for experimental wiring includes a plug 3 that matches the conductive metal hole and a connecting wire 1 that connects the plug and electrical equipment, and is also equipped with an outer insulating cylinder 2, a spring 4 and an inner insulating cylinder 6. The outer insulating cylinder 2 is located outside the plug 3 and forms an integral structure with the plug 3. The inner insulating cylinder 6 wraps the plug 3 exposed outside the outer insulating cylinder and is arranged in the inner cavity of the outer insulating cylinder 2. The inner insulating cylinder 6 It can slide along the inner cavity of the outer insulating cylinder 2. The spring 4 is arranged between the upper end surface of the inner insulating cylinder 6 and the outer insulating cylinder 2. When the joint is not in use, the inner insulating cylinder is always maintained by the elastic force of the spring. 6 wrapping the plug 3 exposed outside the outer insulating cylinder has the advantages of safety and reliability.

The inner insulating cylinder 6 is provided with an inner insulating cylinder top hole 5, the plug 3 passes through the inner insulating cylinder top hole 5, and the diameter of the inner insulating cylinder top hole 5 is slightly larger than the diameter of the plug 3, so that the inner insulating cylinder 6 It does not contact and rub against the plug 3 during telescopic movement driven by the spring.

In this embodiment, the outer insulation cylinder and the inner insulation cylinder are further optimized. The outer insulation cylinder 2 is composed of a cylinder body 201 and an end cap 203 connected to the port on one side of the cylinder body through fasteners. In the cylinder body 201 The inner wall is provided with a step portion 202; the end of the inner insulating cylinder 6 protruding into the inner cavity of the outer insulating cylinder 2 is provided with a boss 601, and the boss 601 cooperates with the step portion 202 of the outer insulating cylinder to define the inner The protruding length of the insulating cylinder 6.

In order to prevent the inconvenient sliding of the inner insulating cylinder caused by the shaking of the spring during use, a slot 7 for limiting the position of the spring 4 can also be provided on the top of the inner insulating cylinder 6 .

It can be clearly seen from Figure 2 that before the connector is inserted into the conductive metal hole button, its conductive plug is hidden in the inner insulating tube, even if it is dragged arbitrarily on a circuit board full of various components, it will not be damaged. Conductive contact will occur with any part of the circuit board; after the conductive plug is inserted into the hole button, regardless of the insertion depth, the inner insulating cylinder will be lifted by the top of the hole button on the circuit board (if the diameter of the inner insulating cylinder is smaller than the diameter of the top of the hole button) Or it is pushed up by the plane of the circuit board (if the diameter of the inner insulating cylinder is larger than the diameter of the top of the hole button), the conductive plugs are hidden in the inner insulating cylinder, which can prevent any accidental short circuit during the wiring operation. Even if the inserted connector accidentally slips out of the button during operation, the inner insulating cylinder will pop out in time due to the action of the spring, which can also prevent any accidental short circuit from happening.

Claims (4)

1. A safety connector for experimental wiring, including a plug (3) matching with a conductive metal hole and a connecting wire (1) connecting the plug, characterized in that: an outer insulating cylinder (2), a spring (4 ) and the inner insulating cylinder (6), the outer insulating cylinder (2) is located outside the plug (3) and forms an integral structure with the plug (3), and the inner insulating cylinder (6) wraps the plug exposed outside the outer insulating cylinder ( 3) and set in the inner cavity of the outer insulating cylinder (2), the inner insulating cylinder (6) can slide along the inner cavity of the outer insulating cylinder (2), and the spring (4) is arranged on the inner insulating cylinder (6) Between the end face and the outer insulating cylinder (2). 2. A safety joint for experimental connection according to claim 1, characterized in that: the outer insulating cylinder (2) is connected to the port on one side of the cylinder by the cylinder (201) and fasteners It consists of an end cap (203), and a stepped portion (202) is provided on the inner wall of the cylinder (201). 3. A safety joint for experimental connection according to claim 2, characterized in that: one end of the inner insulating cylinder (6) protruding into the inner cavity of the outer insulating cylinder (2) is provided with a boss ( 601), the protruding length of the inner insulating tube (6) is limited by the cooperation between the boss (601) and the stepped portion (202) of the outer insulating tube (202). 4. A safety joint for experimental connection according to claim 1, characterized in that: the top of the inner insulating cylinder (6) is provided with a slot (7) for limiting the position of the spring (4).