JPH048025Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] This invention relates to an insulated trolley wire connecting device that connects the ends of insulated trolley wires to each other in an insulated trolley system that supplies electricity while moving to a hoist, crane, etc. It is.

[Background technology]

Conventionally, as shown in FIG.
1, the conductor 23 is made to protrude by peeling off the covering 22 of the terminal portion, and the protruding portion is inserted into a rectangular cylindrical conductor joint 24 for connection.
A set screw 25 is screwed into the conductor joint 24 to fix the conductor 23. The connection portion is insulated with a cover 26.

However, with this structure, the conductor 23 is fixed with the set screw 25, which requires a large number of screw tightening operations, which takes time and effort, and there is also the risk of forgetting to tighten the screws or loosening due to vibration.

Therefore, we devised a device in which conductors could be connected by simply inserting a contact wire into the main body of the connection device, with a terminal pressed in by a pressure spring. However, when inserting the trolley wire, there was a problem in that it caught on the edge of the terminal and could not be inserted smoothly.

[Purpose of invention]

This idea allows you to simply insert an insulated trolley wire.
To provide an insulated trolley wire connecting device which can be connected reliably and can be inserted smoothly without getting caught or the like.

[Disclosure of invention]

The insulated trolley wire connection device of this invention consists of a main body of the connection device, which has a guide section for inserting and holding a pair of insulated trolley wires from both sides with exposed top surfaces of the tips of the conductors, and a contact piece section folded back into a U-shape at both ends. a terminal formed in the shape of a strip and provided in the main body of the connecting device and in contact with exposed conductor portions of both the insulated trolley wires at the contact pieces at both ends; and a force that presses the terminal in the direction of contact with the conductor. The device includes a pressure spring, and a cover that presses down the pressure spring, covers the terminal, and is fixed to the main body of the connection device.

According to this configuration, by sandwiching the pressure spring and the terminal and fixing the cover to the main body of the connecting device in advance, connection can be made by simply inserting the insulated trolley wire from both sides. Moreover, both ends of the terminal have a smooth curved shape that is folded back into a U-shape.
A conductor of an insulated trolley wire can be smoothly inserted under a terminal without getting caught. In addition, since the terminal is held down by a pressure spring without using screws,
No chance of loosening due to vibration or forgetting to tighten. Furthermore, since the conductor comes into sliding contact with the terminal when the insulated trolley wire is attached or detached, foreign matter such as an oxide film on the contact surface can be removed, and the contact resistance can therefore be stabilized.

Embodiment An embodiment of this invention is shown in FIGS. 1 to 6. This connecting device consists of a connecting device main body 1, a cover 2, a terminal 3, and a pressure spring 4. Reference numeral 5 designates a pair of insulated trolley wires, in which a rectangular conductor 6 is simultaneously molded with an insulating coating 7. Insulated trolley wire 5
In this case, the insulating coating 7 is cut out to expose the top surface of the end of the conductor 6. Further, a notch 15 is provided in the insulation coating 7 to increase the creepage distance between the conductors 6.

The connecting device main body 1 has three guide grooves 8 on the lower surface into which the insulated trolley wires 5 are inserted and held from both sides, and has a partition wall 9 in the center. Each guide groove 8
has a step 8a at an intermediate depth, and the back side (upper part in the figure) is deeper than the step 8a. Also,
The connecting device main body 1 has a terminal arrangement opening 10 penetrating vertically and has flanges 11 projecting to both sides. A screw insertion hole 12 is formed in the flange 11, and a screw hole 13 is formed in the upper surface of the connecting device main body 1. The connection device main body 1 has a screw insertion hole 1
It is fixed to the construction material 17 with a mounting screw 16 inserted through the hole 2. The terminal 3 is formed by folding both ends of a strip downward in a U-shape at a curved bent portion to form a contact piece portion 3a, and contacts the conductor 6 at the contact piece portion 3a. The pressure spring 4 is a strip-like plate spring bent into a wave shape.

Operation: Assemble the cover 2 to the main body 1 of the connecting device in advance with the cover mounting screws 14, sandwiching the terminal 3 and the pressure spring 4. In this state, a pair of insulated trolley wires 5 with exposed ends of the conductors 6 are inserted into the guide grooves 8 of the connection device main body 1 from both sides. As a result, the contact pieces 3a on both sides of the terminal 3 are brought into pressure contact with the exposed portion of the conductor 6 of the insulated trolley wire 5, and an electrical connection is established. In addition, if necessary, the connection device main body 1
A screw (not shown) inserted into the screw insertion hole 12 of the flange 11 is passed through the insulation coating 7 of the insulated trolley wire 5 to obtain mechanical connection strength.

The connection is made in this way, but the connection is very simple because the connection can be made by simply inserting the insulated trolley wire 5 from both sides.The terminal 3 has both ends folded back into a U-shape. Therefore, when inserting the insulated trolley wire, the conductor 6 does not get caught on the terminal 3, and the insertion can be performed smoothly. Also, since it is held in place by a pressure spring, there is no chance of loosening due to vibration or forgetting to tighten, unlike those that are fixed with screws.
The pressure spring 4 uses a wavy leaf spring,
Therefore, stable pressing force can be obtained in a small space. Furthermore, since it is a plug-in structure,
Even if there is an oxide film or foreign matter attached to the surface of the terminal 3 or the conductor 6, there is an advantage that it can be removed at the time of connection.
Further, since the terminal 3 is incorporated into the connecting device main body 1 and the cover 2, there is no fear that it will be deformed during the connection work. That is, in the conventional example shown in FIG. 7, the conductor 23 protrudes during the connection work and is easily deformed by external force because there is nothing to support it, but this embodiment does not have this problem.

[Effect of idea]

The insulated trolley wire connection device of this invention allows for a secure connection simply by inserting the insulated trolley wire, and also allows for smooth insertion without causing any snags. Because of the dynamic contact, foreign substances such as oxide films on the contact surface can be removed, resulting in the effect of stabilizing the contact resistance.

[Brief explanation of drawings]

Fig. 1 is a cutaway front view of an embodiment of this invention, Fig. 2 is a bottom view thereof, Fig. 3 is a cutaway side view thereof, Fig. 4 is an exploded perspective view thereof, and Fig. 5 is a connection thereof. FIG. 6 is a perspective view showing the operation, FIG. 6 is a perspective view of the connected state, and FIG. 7 is an exploded perspective view of the conventional example. DESCRIPTION OF SYMBOLS 1... Connecting device body, 2... Cover, 3... Terminal, 3a... Contact piece part, 4... Pressure spring, 5...
Insulated trolley wire, 6...conductor, 7...insulation coating,
8...Guide groove.

Claims (1)

[Scope of utility model registration request] The main body of the connecting device has a guide portion for inserting and holding a pair of insulated trolley wires from both sides with exposed top surfaces of the tips of the conductors, and a strip-shaped connecting device body having contact pieces folded back in a U-shape at both ends. a terminal provided in a connecting device main body and in contact with exposed conductor portions of both the insulated trolley wires at contact pieces at both ends; and a pressure spring that presses the terminal in a direction of contact with the conductor;
An insulated trolley wire connection device comprising: a cover that presses down the pressure spring and covers the terminal and is fixed to the connection device main body.