JPH045747U - - Google Patents

Description

[Brief explanation of the drawing]

The attached drawings show the embodiments of this invention. Fig. 1 is a perspective view of the first embodiment, Fig. 2 is a plan view of the same as seen from the modular plug side, Fig. 3 is a wiring diagram of the above, and Fig. 4 is a diagram of the second embodiment. FIG. 5 is a wiring diagram of the embodiment, FIG. 6 is a reference perspective view of a conventional modular jack plug. In addition, the symbol M1 in the figure...Modular plug, N1
, N2...Bipolar contact piece, 1...Case, 2...Lock ring, 3...Knurl, LED...Light emitting diode, B...Buzzer, S...Slit.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Both poles N1 and N2 of a modular plug M1 capable of double-sided contact with the positive and negative poles of a modular jack are configured, and the modular plug M1 is made into a rectangle and fixed to the end face of a flat case 1. The circuit device described in (a) below, which is connected to each contact piece N1, N2 of the modular plug M1, is built into the case, and a part of the light emitting diode LED incorporated in the circuit device is exposed on the surface of the case. An in-home tester for telephone lines, which is characterized by: (a) Connect the lines L1 and L2 to both contact pieces N1 and N2 of the modular plug M1, connect the varistor R to the lines L1 and L2, and connect the branch line L of the above lines L1 and L2.
Resistors R1 and R2 are connected to 1X and L2X, respectively, both resistors R1 and R2 are connected by a line LR, and a diode D1 is connected to the other branch lines L1Y and L2Y, respectively.
, D2 are connected, and both diodes D1 and D2 are connected to the line L.
A circuit device in which terminals La and Lb connected by line D and drawn out from the line LR and line LD are connected to a light emitting diode LED. 2 Fix the modular plug M1 to case 1,
A varistor R is connected to the wires L1 and L2 connected to the bipolar contacts N1 and N2 of the modular plug M1, which is a circuit device built inside the case, and the wires L1 and
Resistors R1 and R are connected to branch lines L1X and L2X of L2.
2 are connected, both resistors R1 and R2 are connected by line LR, diodes D1 and D2 are connected to other branch lines L1Y and L2Y, and both diodes D1 and D2 are connected.
are connected by wire LD, and a buzzer B is connected to terminals La and Lb drawn out from wires LR and LD, respectively.
2. The telephone line in-home tester according to claim 1, further comprising an audio slit S provided on the surface of the case where the buzzer B is located. 3 Modular plug M1 fixed to case 1
is not equipped with a latch that locks with the modular jack, and when inserted into both contact pieces of the modular jack from both front and back directions, both pole contact pieces N of the modular plug
3. The telephone line in-home testing device according to claim 1, further comprising a U-shaped contact fitting mounted across the main body so as to be able to contact the telephone lines N1 and N2. 4. A claim characterized in that a case 1 to which a modular plug M1 is fixed and a necessary circuit device built therein has a large number of knurling holes 3 formed in a direction perpendicular to the axis of the case 1 on the front and back surfaces of the lower half of the case 1. An in-home tester for the telephone line described in Sections 1 and 2. 5. Claim 1 characterized in that a locking ring 2 is protruded from the end face of the case 1, in which the modular plug M1 is fixed and the necessary line equipment is built therein, on the opposite side to the mounting direction of the modular plug M1. ，
2, 4. In-house test equipment for the telephone line described.