JPH0333195Y2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Purpose The present invention relates to a phase detection device for an electric motor, particularly a phase detection device for a motor in a submersible electric pump.

Conventionally, a specially made phase detector has been used to check the phase of an electric motor. In the conventional phase detector, three lead wires with designated phases are led out from the main body of the phase detector, and the ends of these lead wires are connected to the detected part with a clip each time a detection is performed. This method detects the phase sequence and removes the lead wire from the detected part each time the detection is completed, which is very inconvenient in use and has the disadvantage that it is not suitable for constantly monitoring the phase sequence of the motor. are doing.

The purpose of the present invention is to provide a phase inspection device that is convenient to use, constantly displays the operating status of the motor, and allows the phase sequence to be clearly seen, eliminating the above-mentioned inconveniences in use. It is in.

(2) Structure In the motor phase detection device according to the present invention, a cable 1 led out from the motor side and connected to the power supply board is sandwiched between the cables 1 and 1, which are closed by closing members whose inner surfaces face each other. a fitting body, a required number of longitudinal grooves recessed in the closing surface of the closing member so as to sandwich the parting lines of the cable in parallel, and a groove formed at one end of the sandwiching body to hold the sheathing part of the cable. A pit built,
A conductive needle is planted in the bottom of the vertical groove to be inserted into the core wire of each cable split wire held when the clamping body is closed, and a signal light is electrically connected to the conductive needle to a predetermined circuit. It is composed of , and.

To explain the drawings of the embodiment, 1 is a cable led out from an electric pump and connected to a power supply panel, 2 is a clamping body that clamps the vicinity of the leading end of the cable 1, and the inner surfaces of each other are A required number of vertical grooves 3a...3a for holding the dividing lines 1a...1a of the cable 1 are formed on the closing surfaces of the closing members 2a...2a which are opposed to each other and are detachably closed. At the groove bottom of each vertical groove 3a...3a in one of the closing members 2a, there are core wires of each cable split line 1a...1a that are clamped in the vertical grooves 3a...3a when the clamping body 2 is closed. Conduction needle 4 inserted into...
4 and electrically connect the conductive needles 4...4 to the circuit of the signal light 5 buried in the closing member 2a, the cable split line 1a is connected via these conductive needles 4...4. ...The connection state of 1a, that is, the rotational state of the electric motor, is displayed so as to be visible from the outside (outer peripheral surface a or outer end surface b) of the member 2a. Therefore, signal light 5
It is desirable to have two lights 5a and 5b.
Reference numeral 6 denotes a closing mechanism attached to the outside of the closing members 2a...2a, and for example, as shown in FIG. A locking groove 6'a carved in the
6'a, or as shown in FIG. 2, a clamping tool is pressed between two opposing members 2a, 2a, or as shown in FIG. 3, screws 6c, 6
c may be screwed. The point is that the closing surfaces of the closing members 2a . . . 2a constituting the clamping body 2 need only be fixed in the closed state. 7 is the closing member 2a...
A vertical hole 8 formed in one end of the clamping body 2 so as to be concentric with the vertical groove 3a in the center when the clamping body 2a is closed.
is a ground wire outlet provided at the upper edge of the cable insertion ring 7.

To attach the detection device of the present invention to a motor, insert the sheath of the cable 1 into the pit 7 near the tip of the cable 1 led out from the motor, and lead out the ground wire 1b from the ground wire outlet 8. The conductive needles 4...4 are separated into cables by fixing the closing surfaces of the closing members 2a...2a by pressing the cable splitting lines 1a...1a into the vertical grooves 3a...3a in parallel. Wire 1a...Insert it into the core wire of 1a. and each vertical groove 3
Cable division line 1a...1 derived from a...3a
The remaining ends 1'a...1'a of a are connected to the power supply panel.

When the electric motor rotates forward, one signal light 5a
lights up and rotates in reverse, the other signal light 5b
For example, if one signal light 5a is set to display blue and the other signal light 5b is set to display red,
The operating status of the electric motor can be easily determined visually. Also, if one of the lead wires is disconnected, both signal lights will light up at the same time.

(3) Effects For electric motors equipped with the device of the present invention, phase detection can be performed immediately without the need for a separate meter. In addition, the device of the present invention can be attached at all times near the leading end of the cable 1 led out from the electric motor with the sheathed part of the cable 1 held in the well 7, and the phase detection can be carried out at the signal light. Since this can be done using the visual display shown in step 5, it is possible to constantly monitor the energization status of the motor and the phase sequence, making it possible to constantly monitor the energization status of the motor and the phase sequence. Even when the vehicle is running, the operating status can be clearly understood. Furthermore, even if it becomes necessary to change the power supply panel, it can be easily done by simply connecting the dividing lines 1a...1a at the ends of the cables to another power supply panel.

[Brief explanation of the drawing]

A in FIGS. 1 and 2 is a perspective view showing the divided state of the clamping body in the device of the present invention, B in FIGS. 1 and 2 is a plan view of the same, and C in FIGS. 1 and 2.
FIG. 3 is a perspective view showing the clamping state of the device of the present invention, and FIG. 4 is an example of an electric circuit diagram of the device of the present invention. 1...Cable, 1a...Cable dividing line, 2
... Clamping body, 2a ... Closing member, 3a ... Vertical groove,
4... Conduction needle, 5... Signal light, 7... Pit.

Claims (1)

[Scope of claim for utility model registration] A cable 1 led out from the electric motor side and connected to the power supply panel, and closing members 2a, 2a whose inner surfaces face each other.
A clamping body 2 that is closed by a recessed member 2, a required number of vertical grooves 3a, which are recessed in the closing surfaces of the closing members 2a, 2a, so as to sandwich the dividing lines 1a, 1a of the cable 1 in parallel. 3a, a vertical hole 7 formed at one end of the clamping body 2 to hold the sheathing portion of the cable 1, to the core wire of each cable split line 1a...1a which is clamped when the clamping body 2 is closed; Conductive needles 4 are implanted in the bottom of the vertical grooves 3a to be inserted.
4. A signal light 5 in which the conduction needles 4...4 are electrically connected to a predetermined circuit. A phase detection device for an electric motor.