JPS6135134A - Phase detector of motor - Google Patents

Abstract

PURPOSE:To readily detect the phase of a motor by dividing a cable connected from a motor to a switchboard in a slot provided in closing members opposed at the insides into three phases and holding them, and inserting conductive styluses into the divided wirings to connect them to signal means. CONSTITUTION:3 semicircular slots 3a are formed inside closing members 2a, 2a' opposed at the insides. The lower porting of the member 2a has an annular unit 7 for inserting a cable 1, the cable 1 is divided into three phases, and the divided wirings are held from both sides in the slot 3a. The members 2a, 2a' are secured by closing mechanisms 6a, 6a'. A conductive stylus 4 is implanted to the slot 3a of the member 2a, and when the divided wirings passed through the slot 3a close the members 2a, 2a', they are contacted with the cores of the divided wirings. On the other hand, the other end of the stylus 4 is connected with an electric circuit, not shown to detect the normal or reverse of the rotating directions of the three phases to fire a signal lamp 5a or 5b. Thus, the phase can be readily detected.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a phase detection device for an electric motor, particularly to a phase detection device for a motor in an underwater electric bonder.

Conventionally, a specially made phase detector has been used to check the phase of an electric motor. In conventional phase detectors, three lead wires with designated phases are led out from the main body of the detector, and the ends of these lead wires are connected to the detected part with clips each time detection is performed. The lead wires are all removed from the detected part each time the detection is completed.
It is extremely inconvenient to use, and has the disadvantage that it is not suitable for constantly monitoring the phase sequence of the motor.

SUMMARY OF THE INVENTION An object 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 electric motor inspection bag device according to the present invention, a cable is connected to the closing surface of the closing member, which is closed with the inner surfaces facing each other, and is led out from the electric motor side and connected to the power supply board. A required number of vertical grooves are formed to hold the cable splitting wires in parallel to form a clamping body, and conductive needles to be inserted into each core wire of the cable splitting wire are inserted in parallel to the inner surface of the closing member. It has a structure in which these conductive needles are connected to the electric circuit of a predetermined signal engine.

To explain the drawings of the embodiment, 1 is a cable led out from the electric bong and connected to the power supply panel, 2 is a clamping body that clamps the vicinity of the leading end of the cape lV1, and the inner surfaces of the cables are connected to each other. The cape/I/10 parting line 1 is attached to the closing surface of the closing members 2a...2a which are opposed to each other and are detachably closed.
A required number of vertical grooves 3a...3a are formed to hold the cables 1a, and conductive needles 4...4 are provided on the inner surface of the closing member 2a to be inserted into the core wires of the cable splitting lines 1a-1a. By planting them in parallel, and connecting the conductive needles 4...4 to the electric circuits of the signal lights 5a, 5b buried in the member 2a, the cable splitting line can be connected via these conductive needles 4...4. The connected states of the members 1a, . . . , and the rotational state of the shim mower are displayed so as to be visible from the outside (the outer peripheral surface a or the outer end surface b) of the member 2a. Reference numeral 6 denotes a closing mechanism attached to the outside of the closing member 2...2a. For example, as shown in FIG. The clamping bodies 6b, 6b can be locked into the locking grooves 6'a, 6'a carved in the member 2a, or the clamping bodies 6b, 6b can be properly aligned between the two opposing members 2a-2a, as shown in FIG. Alternatively, as shown in FIG. 3, screws 6c, 6c 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.

Reference numeral 7 denotes a cable insertion ring that is provided concentrically with the longitudinal groove 3a in the center immediately below the longitudinal groove 3a when the closing members 2a...2a are closed, and 3b is provided at the upper edge of the cable insertion ring 7. This is the ground wire outlet.

be.

When attaching the detection device of the present invention to an electric motor, near the leading end of the cable 1 led out from the electric motor,
Insert the covering part of the cape/l/1 into the cable insertion ring 7 and lead out the ground wire 11) from the ground wire outlet 3b, and connect each cable split line 1a...1a to the vertical groove 3a.
…The closing member 2 is sandwiched in parallel inside 3a.
a-...Fix the closing surface of 2a. and each vertical groove 3a
The remaining ends 1'a...1/a of the cable splitting lines 1a--1a led out from...3a are connected to the power supply panel.

When the motor rotates in the forward direction, one signal light 5a lights up, and when the motor rotates in the reverse direction, the other signal light 5b lights up.

For example, if one signal light 5a has a back color display and the other signal light has a red display, the operating status of the electric WJ machine can be easily determined visually. . Also, if one of the lead wires is disconnected, both signal lights will light up at the same time.

(8) Effects In an electrical equipment equipped with the device of the present invention, phase detection can be performed immediately without requiring a separate meter. In addition, the device of the present invention can be attached to the cable of the electric GTH machine at all times, and the phase detection can be performed using a signal system such as a visual display. [] can be constantly monitored, and the operating status can be clearly understood even when multiple electric pumps are being operated or when they are being operated alternately. Furthermore, even if it becomes necessary to change the power supply panel, it can be easily done by simply connecting the dividing line at the end of the cable to another power supply panel.

[Brief explanation of drawings]

[M] in FIGS. 1 and 2 is a perspective view showing the divided state of the clamping body in the device of the present invention, and (M) in FIGS.
B) is a plan view of the same, FIG. 1 and FIG. 1... Cable, 1a... Cable division line, 2... Clamping body,
2a...Closing member, 3a...K1 groove, 4...Conducting needle. Patent applicant Tsurumi Manufacturing Co., Ltd. Kaya 1j sword

[0] Kaya E Sen (A) Kaya? :,)'fJcc]

Claims (1)

[Claims] Closing members (2a) whose inner surfaces face each other and are closed
...(2a), the dividing line (1a) of the cable (1) led out from the motor side and connected to the power supply panel is placed on the closing surface (1a)...(1a)
) in order to hold them in parallel, the required number of vertical grooves (3a)...(
3a) to form a clamping body (2), and conductive needles (4)...(4) inserted into each core wire of the cable splitting lines (1a)...(1a) as a closing member (2a). A phase detection device for a motor, in which the conductive needles (4) are installed in parallel on the inner surface of the motor, and the conductive needles (4) are connected to the electric circuit of a predetermined signal engine.