Phase detector jig

Abstract

To provide a phase detector jig for electrically connecting a phase detector to a measurement target when measuring phase rotation of the measurement target using the phase detector, which can be easily adapted to measurement targets of various forms and enables safe and quick measurement.SOLUTION: A phase detector jig comprises a plurality of types of measurement target contact heads 1 composed of a plug-in type head to be inserted into a plurality of types of outlets and a contact-type head that can be brought into contact with terminals and conductor parts, and an adapter 2 that can be connected to a phase detector 50, where one of the plurality of types of measurement target contact heads 1 can be freely connected to and disconnected from the adapter 2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This invention relates to a phase detector jig having a plurality of adapters that can accommodate various shapes of outlets and various forms of conductor parts, and is a phase detector jig that comprises a measurement object contact head part consisting of a plug-in head that can be inserted into multiple types of outlets and a contact-type head that can abut against conductor parts such as terminals, and an adapter part that can be connected to a phase rotation detector (hereinafter simply referred to as a "phase detector"), and the measurement object contact head part and adapter part can be easily connected and detached. [Background technology]

[0002] A three-phase induction motor rotates when connected to a three-phase, three-wire power supply. The direction of rotation of this motor is determined by the order of the phases of the connected wires. Therefore, it is necessary to measure the phase of the power supply before connecting a power source such as an outlet to a load such as the three-phase induction motor. A device that checks this phase sequence is called a phase detector. If the phase is positive, the motor will rotate forward, and if the phase is negative, the motor will rotate in the reverse direction, but some devices will malfunction if operated with the phase reversed.

[0003] 7, three wires 51 are led out from the phase detector 50, and alligator clips 52 are connected to the ends of the wires 51. When detecting the phase rotation of a power source such as an outlet, all three phases are connected and measured, but conventionally, three uncoated copper wires are inserted into the three-phase holes of the outlet, the other end of each copper wire is clamped by each alligator clip 52 of the phase detector 50, and the phase sequence is measured by the phase detector 50. However, this method is time-consuming and dangerous.

[0004] Therefore, a "wiring inspection device for three-phase outlets" has been developed as described in Patent Document 1.

[0005] When a three-phase outlet 1 with three-phase wiring is embedded in a wall 21, the attachment 11 is fitted with three-phase plugs 12, each of which is inserted into the corresponding socket. Next, clips 22r, 22s, and 22t, each colored to correspond to the three phases, clamp each of the ring-shaped insulated wires 13r, 13s, and 13t pulled out of the attachment 11. This causes electrostatic induction to induce voltages for each phase of the three-phase wires connected to the three-phase outlet 1 in the clips 22r, 22s, and 22t. The phase detector 24 then displays a forward or reverse rotation indication based on the phase voltages of the clips 22r, 22s, and 22t. This allows the phase detector 24 to inspect the phase sequence of multiple three-phase outlets 1 in an assembly line while the three-phase outlets 1 remain live. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Utility Model Registration No. 3137960 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0007] However, three-phase 200V outlets, in particular, have a wide variety of configurations, as shown in Figure 8, and the device described in Patent Document 1 requires the preparation of a wide variety of attachments to match the outlet shapes. Furthermore, the measurement target is not limited to the shape of an outlet. It can also be the shape of a terminal block or a copper plate inside a panel. In these cases, the device described in Patent Document 1 cannot be used.

[0008] Therefore, an object of the present invention is to provide a jig for a phase detector that electrically connects a phase detector to an object to be measured when the phase rotation of the object to be measured is measured using a phase detector, and that can easily accommodate objects of various shapes and can perform measurements safely and quickly. [Means for solving the problem]

[0009] The invention of claim 1 is a jig for a phase detector that comprises multiple types of measurement object contact head parts, consisting of a plug-in type head that can be inserted into multiple types of outlets and a contact type head that can contact terminals and conductor parts, and an adapter part that can be connected to a phase detector, and one of these multiple types of measurement object contact head parts can be freely connected and detached from the adapter part.

[0010] The invention of claim 2 is a jig for a phase detector as described in claim 1, in which the plug-in head to be inserted into the outlet is provided with multiple types of plug-in heads having plug-in blades shaped to match the shape of the three-phase outlet.

[0011] The invention of claim 3 is a jig for a phase detector according to claim 1, in which the contact-type head that can contact the terminals or conductor portions has conductor terminals provided at the ends of the three-phase wiring that is led out from the measurement object contact head portion.

[0012] The invention of claim 4 is a jig for a phase detector according to claim 1, in which the contact-type head that can contact the terminals or conductor portions has conductor terminals made of magnets provided at the ends of the three-phase wiring that is led out from the measurement object contact head portion.

[0013] The invention of claim 5 is a jig for a phase detector according to claim 1, in which the contact-type head that can contact the terminals or conductors has pin-shaped terminals provided at the ends of the three-phase wiring that is led out from the measurement object contact head portion. [Effects of the Invention]

[0014] According to the invention of claim 1, when measuring the phase rotation of a measurement object using a phase detector, the phase detector jig is used, a measurement object contact head unit is selected according to the measurement object, and connected to the adapter unit, and the phase rotation can be measured easily and quickly using the phase detector.

[0015] Furthermore, according to the invention of claim 2, when the object to be measured by the phase detector is a power outlet, a power outlet plug-in head having a shape that matches the shape of the plug-in groove of the power outlet is selected, connected to the adapter part, and the jig is inserted into the power outlet, thereby enabling safe and quick phase detection of the power outlet.

[0016] Furthermore, according to the inventions of claims 3 and 4, if the object to be measured by the phase detector is not an outlet but a terminal or other conductor, the contact-type head can be easily used to contact or fix the terminal or conductor, and the phase rotation can be measured by the phase detector.

[0017] Furthermore, according to the invention of claim 5, when the object to be measured by the phase detector is not an outlet but a terminal or other conductive part, and the terminal of the phase detector jig cannot be fixed to the terminal or conductive part of the object to be measured, the phase can be detected safely and easily by contacting the pin-shaped terminal. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a conceptual diagram showing a schematic configuration of a state in which a jig for a phase detector according to a first embodiment of the present invention is connected to a phase detector. [Figure 2] 1A and 1B are schematic diagrams of a phase detector jig according to a first embodiment of the present invention, in which FIG. 1A is a diagram showing a state in which a measurement object contact head unit and an adapter unit are connected, and FIG. 1B is a diagram showing a state in which the measurement object contact head unit is detached from the adapter unit. [Figure 3] 1A, 1B, and 1C are diagrams showing a plug-in type head of a measurement object contact head part of a phase detector jig according to a first embodiment of the present invention, in which FIG. 1A is a front view, FIG. 1B is a side view, and FIG. 1C is a rear view. [Figure 4] 1A to 1C are diagrams showing an adapter part connectable to a phase detector of a phase detector jig according to a first embodiment of the present invention, in which FIG. 1A is a front view, FIG. 1B is a side view, and FIG. 1C is a rear view. [Figure 5] 1A and 1B are diagrams showing a contact-type head that can contact a terminal or a conductor portion of a contact head portion of an object to be measured of a phase detector jig according to a first embodiment of the present invention, where FIG. 1A is a side view and FIG. 1B is a rear view. [Figure 6]1A and 1B are diagrams showing another example of a contact-type head that can contact a terminal or a conductor portion of a head portion that contacts an object to be measured, of a jig for a phase detector according to a first embodiment of the present invention, where FIG. 1A is a side view and FIG. 1B is a rear view. [Figure 7] FIG. 1 is a perspective view of a conventional phase detector. [Figure 8] This is a diagram showing various shapes of three-phase 200V outlets. DETAILED DESCRIPTION OF THE INVENTION

[0019] (Embodiment Example 1) A phase detector jig A according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 6. FIG.

[0020] As shown in Figures 1 and 2, this phase detector jig A consists of a measurement object contact head part 1 and an adapter part 2 that can be connected to a phase detector 50, and the measurement object contact head part 1 and the adapter part 2 are configured so that the three phases of the measurement object contact head part 1 and the adapter part 2 are electrically connected to each other by detachably inserting the three-phase insertion blades 4 (see Figure 4) of one of the measurement object contact head parts into the three-phase insertion grooves 3 (see Figure 3) of the other three-phase.

[0021] When the measurement object contact head portion 1 is a plug-in type head, a plug blade 5 protrudes from one side of the measurement object contact head portion 1, and the plug blade 5 is inserted into a three-phase outlet, which is the measurement object, and the three alligator clips 52 of the phase detector 50 are gripped by each of the three-phase terminal rods 6 protruding from the adapter portion 2, thereby detecting the phase rotation of the outlet.

[0022] 3 shows a specific example in which the measurement object contact head 1 is a plug-in type head 7, with one side 7a of the plug-in type head 7 having a plug-in blade 5 corresponding to one of the shapes of the three-phase 200V socket to be measured. The other side 7b of the plug-in type head 7 is provided with the three-phase insertion grooves 3.

[0023] The outlet plug-in heads 7 are prepared with plug-in blades 5 corresponding to the various shapes of 200V phase outlets shown in Figure 8. However, the plug-in grooves 3 of the outlet plug-in heads 7 prepared in this way for each shape are all the same shape.

[0024] 4, the adapter part 2 connectable to the phase detector has the bayonet blades 4 on one side 2a of the adapter part 2 and the three-phase terminal rods 6 protruding from the other side 2b. The bayonet blades 4 are detachably fitted into the bayonet grooves 3 of the measurement object contact head 1.

[0025] 5 shows a specific example of a contact-type head 8 that can contact a terminal or conductor portion instead of the plug-in type head 7. The contact-type head 8 also has substantially the same shape as the plug-in type head 7 in order to fit into the adapter portion 2, with three-phase wiring 9 leading out from one side surface 8a and three-phase insertion grooves 3 formed on the other side surface 8b, similar to the plug-in type head 7. A flat terminal 10 having a notch on one side is provided at the tip of each of the wiring 9. The contact-type head 8 is used by securing the flat terminal 10 over a bolt on a terminal board for three-phase conductors or electric wires in a distribution board or the like.

[0026] Another specific example of the contact type head 8 that can contact a terminal or a conductor portion is a contact type head 11 that can contact a terminal or a conductor portion, as shown in FIG.

[0027] This abutment type head 11 has pin-shaped terminals 13 connected to the tips of three-phase wiring 12 extending from one side surface 11a, and the three pin-shaped terminals 13 are supported by an insulating support frame 14, with the spacing between the three pin-shaped terminals 13 being adjustable within the insulating support frame 14. This abutment type head 11 detects phase rotation with the three pin-shaped terminals 13 in contact with a terminal board for three-phase conductors or electric wires in a distribution board or the like. Also, the other side surface 11b is provided with three-phase insertion grooves 3, similar to the plug-in type head 7.

[0028] In the first embodiment, the terminal rod 6 protruding from the other side surface 2b of the adapter part 2 connectable to the phase detector grips the alligator clip 52 at the end of the wiring led out from the phase detector 50, thereby electrically connecting the jig and the phase detector, but instead, three-phase wiring may be led out from the other side surface 2b of the adapter part 2 and the alligator clip 52 may be clamped to the three-phase wiring, or other structures may be used. The key is to provide a terminal that can be easily clamped by the alligator clip 52. [Explanation of symbols]

[0029] A phase detector 1. Head for contacting the object to be measured 2. Adapter 2a One side 2b Other side 3 Insertion groove 4 Insertion blade 5 Insertion blade 6 Terminal bar 7. Plug-in head 7a One side 7b Other side 8 Contact type head 8a One side 8b Other side 9 Wiring 10 Flat terminal 11 Contact type head 11a One side 11b Other side 12 Wiring 13 Pin Shape Terminal 14 Insulation support frame 50 Phase detector 51 Wiring 52 Alligator clip

Claims

1. The device comprises a plurality of types of measurement object contact head units, each consisting of a plug-in type head that can be inserted into a plurality of types of outlets and a contact type head that can contact a terminal or a conductor, and an adapter unit that can be connected to a phase detector. The phase detector jig is characterized in that one of the plurality of types of measurement object contact head units and the adapter unit can be freely connected and detached.

2. 2. The phase detector jig according to claim 1, wherein the outlet plug-in head to be plugged into the outlet is provided with a plurality of plug-in heads having plug blades shaped to match the shapes of three-phase outlets.

3. 2. The phase detector jig according to claim 1, wherein the contact-type head capable of contacting the terminals or conductors has conductor terminals provided at the tips of three-phase wirings led out from the measurement object contact head portion.

4. 。 2. The phase detector jig according to claim 1, wherein the contact-type head capable of contacting the terminals or conductors has conductor terminals made of magnets provided at the ends of three-phase wiring led out from the measurement object contact head portion.

5. 2. The phase detector jig according to claim 1, wherein the contact-type head capable of contacting the terminals or conductors has pin-shaped terminals provided at the tips of three-phase wirings led out from the measurement object contact head portion.

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