JPH04118755U - Electric shock prevention device at generator terminal - Google Patents

Abstract

(57) [Summary] [Purpose] In an engine generator, if an unskilled worker touches the output terminal 7 inside the terminal case 10,
This is to prevent accidents such as electric shock from occurring. [Structure] A terminal case lid 9 is arranged on the front surface of a terminal case 10 in which an output terminal 7 is arranged, and the terminal case lid 9 is forcibly closed by an actuator 1 when electricity is applied.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention can be used to drive work equipment at construction sites, civil engineering sites, etc. where commercial power is not available. This invention relates to an electric shock prevention device for an engine generator that supplies power for motion.

0002

[Conventional technology]

The technology of installing a lid on the terminal case of engine generators has been known for a long time. It is being done. For example, the technology described in Japanese Utility Model Publication No. 63-30220 It is. However, in the conventional technology, there is no electric shock protection in the terminal case. The technology related to the stopping device had not been constructed.

0003

[Problems that the idea should solve]

Therefore, in the conventional technology, if the user forgets to close the terminal case lid, The output terminal is exposed and a worker is unaware that high pressure is flowing through this area. There was a problem where people could get an electric shock if they touched it. This invention is based on such targets. The terminal case lid 9 that covers the terminal case 10 is automatically moved along with the current flow. By closing the terminal, you can prevent electrical shock due to contact with output terminal 6 due to incorrect operation. This is to prevent

0004

[Means to solve the problem]

The problems to be solved by this invention are as described above, and next we will explain the means to solve the problems. I will clarify. That is, in the engine generator, the voltage generation or output voltage from the generator 5 is When current flows through the terminal, the actuator is actuated by the electrical signal. Additionally, a terminal case lid is provided to cover the terminal case.

[0005]

[Effect]

Next, the effect will be explained. When starting the engine inside the engine generator case 15 This is done using the charging power of the battery 4. And when the engine speed reaches a certain level, When the rotation is reached and the circuit breaker 3 is turned on, the output outlet 6 and the output A current flows through the terminal 7, and power is supplied to the work machine. Then, the molded circuit breaker 3 At the same time as is turned ON, relay 2 of the present invention is activated, and actuator 1 is excited. By doing so, the terminal case lid 9 is forcibly closed.

[0006]

【Example】

Next, embodiments of the present invention will be described. Figure 1 is a side view of the operation side of the engine generator. FIG. 2 is an enlarged side sectional view of the terminal case 10, and FIG. 3 is a generator terminal of the present invention. FIG. 4 is an electric circuit diagram of another embodiment of the terminal electric shock prevention device. In FIG. 1, an output terminal is provided on the side of the operation panel 14 of the engine generator case 15. 7 and an output outlet 6 are arranged. The output outlet 6 is on the work machine side. Even if the outlet is unplugged, do not touch the part of the output outlet 6 that carries current. There is no possibility of contact and there is no risk of electric shock. However, output terminal 7 The metal part of the terminal is exposed, and this terminal is connected to the work equipment side. Since the exposed part of the power line is wrapped around, there are many bare wires in the cable. , there is a high possibility that the worker will come into contact with the bare wire portion of the cable.

[0007] A generator 5 is arranged inside the engine generator case 15. It rotates while being integrated with the engine's crankshaft. and Electric power is generated by the generator 5 and transmitted from the output outlet 6 and the output terminal 7. In the past, the person operating the engine generator was a skilled person at the work site. This kind of electric shock accident never occurred. However, recently Jin generators can be easily rented by leasing and can be used by foreign workers or inexperienced operators. Since they are often operated by contractors, there are no prohibitions or dangers when operating engine generators. Because people operated the machine without knowing its condition, there were many accidents resulting in personal injury due to electric shock. . The present invention is a mechanism to avoid this electric shock accident.

[0008] In FIG. 2, a side sectional view of the engine generator case 15 on the operation panel 14 side is shown. It shows. A recess is formed on the side surface, and the recess is used as the terminal case 10. ing. Then, the output terminal 7 is juxtaposed and protruded into the terminal case 10. Ru. In the present invention, the terminal case 10 is closed by the terminal case lid 9. The generator 5 generates electricity and power is supplied to the output terminal 7. In the case where the terminal case 10 is closed with the terminal case lid 9. This is the structure that was designed to do so. That is, the surface of the terminal case 10 and the engine The actuator 1 is fixed at a position inside the generator case 15. A piston 13 protrudes from the tuator 1. The tip of the piston 13 is It is pivotally supported by Mu 12. The arm 12 is the pivot shaft of the terminal case lid 9. It is fixed at 11. Therefore, the actuator 1 is composed of a solenoid. If current flows from the generator 5, the actuator 1 is excited. Then, the piston 13 contracts, and the pivot shaft 11 moves the terminal case lid 9 in the closing direction. The terminal case 10 is rotated to close the entrance surface of the terminal case 10.

[0009] However, if the generator 5 does not supply power, the actuator 1 will not be energized. Therefore, the piston 13 is free and the terminal case lid 9 can be opened and closed freely. It can be done. Next, the electric circuit will be explained with reference to FIGS. 3 and 4. In Figure 3, When molded circuit breaker 3 is OFF, no current flows through the circuit of relay 2, so it is not activated. No current flows through the circuit of the ulator 1 either. Therefore, the terminal case lid 9 is opened. It is in a free state where it can be closed. In this state, output terminal 7 is also energized. Since the cable is not connected to the terminal, the worker needs to connect the external cable of the work equipment to the terminal. Even if you touch the terminal, you will not get an electric shock. 4 is the battery -, 5 is a generator.

0010 Next, when the circuit breaker 3 is turned on and the engine is started, the output A three-phase power supply is applied to the terminal 7, and a DC power supply is applied to the circuit of the actuator 1. A voltage of 12V is applied, the actuator 1 operates, and the terminal case lid 9 is opened. It is brought into a closed state by the ton 13. The terminal case lid 9 transmits power Since the inside cannot be opened, there is no risk of electric shock. Figure 4 shows the actuator 2 is a circuit diagram showing another embodiment of the interposed circuit of the controller 1. FIG. In this example, the voltage The contact 8' of the establishment relay 8 is used as is to connect it to the actuator 1. It is. Therefore, when the engine rotates, the generator 5 rotates, and the voltage increases, the voltage The establishment relay 8 is turned ON, and at the same time, the actuator 1 is also excited, and the piston 13 This closes the terminal case lid 9.

[0011]

[Effect of the idea]

Since the present invention is constructed as described above, it has the following effects. That is, , when the output terminal 7 is energized, the terminal case 10 is forcibly turned on. The output terminal 7 is covered and closed by the terminal case lid 9, so the operator cannot touch the output terminal 7. This makes it impossible to touch the bare wires of the cable. Also output When terminal 7 is not energized or generator 5 is not generating electricity In this case, the terminal case lid 9 is in an open state or in a state where it can be opened and closed freely. Also, cables can be easily installed.

[Brief explanation of drawings]

FIG. 1 is a side view of the operation surface side of an engine generator.

FIG. 2 is an enlarged side sectional view of a portion of the terminal case 10. FIG.

FIG. 3 is an electrical circuit diagram of the electric shock prevention device of the generator terminal of the present invention.

FIG. 4 is an electrical circuit diagram of another embodiment.

[Explanation of symbols]

1 Actuator 2 relay 3 Hardwire circuit breaker 4 Battery 5 Generator 6 Output outlet 7 Output terminal 8 Voltage establishment relay 9 Terminal case lid 10 Terminal case

Claims (1)

[Scope of utility model registration request] Claim 1: The engine generator is provided with a terminal case lid that operates an actuator and covers the terminal case when voltage is generated from the generator 5 or current flows through the output terminal. An electric shock prevention device for generator terminals, which is characterized by: