JPH065647Y2 - Driver with polarity detection function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a driver with a polarity detection function, which is integrated with a function of determining the polarity of a central line in a telephone line.

[Conventional technology]

When connecting a telephone set, a telephone device, and a communication terminal device to a telephone line, the polarities (positive and negative) of the station line must be properly adjusted in order to operate these devices normally.

Traditionally, to measure or detect the polarity of a local line, a voltage resistance milliamp meter (generally called a "tester")
The tester's probe is connected to the station line using.

[Problems to be solved by the invention]

However, in addition to tools such as a screwdriver, a tester must always be carried separately when performing work such as connecting a telephone or terminal device to a telephone line, and handling must be done carefully to prevent failure of the tester. However, there is a problem that handling is complicated compared to the ease of work content.

In addition, recently, small modular connectors are often used for connecting telephone lines, and the general-purpose probe of the tester is too large to be used directly, so a special adapter or probe must be prepared and replaced each time. However, there is a problem that the measurement operation is troublesome.

Furthermore, there is a voltage detector or a voltage detection driver in combination with this as a simple means for detecting the application of voltage, but this has the inconvenience that the polarity cannot be determined.

An object of the present invention is to solve the above problems and to provide a driver with a polarity detection function, which is capable of surely determining the polarity with a simple structure and is convenient to carry.

[Means for solving problems]

In order to achieve the above object, a driver with a polarity detection function of the present invention is characterized in that a modular jack and a light emitting diode connected between terminals of the modular jack are provided in a handle portion of the driver.

[Action]

According to such a driver with a polarity detection function, when the modular jack provided at the handle of the driver is inserted into the modular plug of the telephone line, which is the end of the telephone line, the polarity is properly connected to the central line. When the light emitting diode is turned on and the polarity is not properly connected or the connection is poor, the light emitting diode does not turn on. Therefore, whether or not the light emitting diode is turned on can detect whether the connection to the central line is normal.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a view showing a first embodiment of the present invention, in which 1 is a driver bit shaft, 2 is a driver handle, 3 is a modular jack, 4 is a light emitting diode, 5 is a light emitting diode mounting bracket. Is. The driver is usually composed of a metal bit shaft 1 and a handle 2 made of an insulating material such as plastic in which one end of the bit shaft 1 is integrally fixed by molding or the like. Here, the tip of the bit shaft 1 has a shape such as "+" or "-", and engages with a cross hole or a slot in the head of a screw or the like. A modular jack 3 is integrally provided on the side surface of the driver handle 2, and a light emitting diode 4 is provided on the rear end surface of the driver handle 2.
Are integrally provided by the mounting bracket 5.

FIG. 2 shows an electrical tangential circuit of the modular jack 3 and the light emitting diode 4 in the first embodiment. In the figure,
L ₁ and L ₂ indicate station lines, and station line L ₁ (-48V) is station line L ₂ (earth,
The voltage is set lower than OV). The terminal 31 to be connected to the office line L ₁ of the modular jack 3 is connected to the cathode of the light emitting diode 4 by the connecting line 6, and the terminal 32 to be connected to the office line L ₂ of the modular jack 3 is the connecting line 7. Is connected to the anode of the light emitting diode 4 via the protective resistor R.

Next, the operation of the first embodiment will be described. First, a driver composed of a bit shaft 1 and a handle portion 2 engages the tip of the bit shaft 1 with the head of a screw or the like and rotates the handle portion 2 to screw a screw or the like, which is the original function of the driver. Alternatively, the operation of unscrewing is performed. Second, plug in the modular plug of the telephone cord for connecting the telephone, which is the end of the telephone circuit. In this case, if the modular plug is correctly connected to the polarity of the office line, the current will be the curve L ₂ → terminal 32 → connection line 7 → resistance R → light emitting diode 4 → connection line 6 → terminal 31.
→ The line L ₁ flows and the light emitting diode 4 lights up. On the other hand, if the polarity of the modular plug is not properly connected to the station line or if the connection is poor, no current will flow through the light emitting diode 4, and the light emitting diode 4 will not light. In this way, insert the modular plug connected to the central line into the modular jack 3 provided on the handle 2 of the driver,
Whether or not the modular plug is properly connected to the central line can be detected based on whether or not the light emitting diode 4 is turned on at this time.

FIG. 3 is a view showing a second embodiment of the present invention, and a fourth embodiment
The figure is a diagram showing the connection relationship of the electrical circuit portion of the second embodiment. In the figure, the same reference numerals as those in the first embodiment indicate the same functional parts, 20 is a handle portion of a transparent driver such as plastic, and 41 and 42 are light-emitting devices integrally attached to the inside of the handle portion 20, respectively. Light emitting diodes of different colors.
Regarding the electrical connection, as shown in FIG. 4, the light emitting diode 41 corresponds to the light emitting diode 4 of the first embodiment, and the light emitting diode 42 is connected in parallel with the light emitting diode 41 so as to have the opposite polarity. All are the same as in the first embodiment (FIG. 2) except that they are connected. In this embodiment, the light emitting diode 41 emits light to the edge and the light emitting diode 42 emits light to red.

Next, the operation of the second embodiment will be described. First, the function as a driver is the same as that of the first embodiment. Next, the modular plug of the telephone line for the telephone tangent, which is the end of the telephone line, is inserted into the modular jack 3 of the handle portion 20. In this case, if the polarity of the modular plug is correctly connected to the station line, a current flows through the terminal 32 → the connecting line 7 → the resistor R → the light emitting diode 41 → the connecting line 6 → the terminal 31 and the light emitting diode 41 lights up in green. To do. On the other hand, if the modular plug is connected in reverse polarity to the station line, a current flows through the terminal 31 → connecting line 6 → light emitting diode 42 → resistor R → connecting line 7 → terminal 32, and the light emitting diode 42 lights up in red. To do. In addition, the modular plug has poor contact with the central line,
If the connection is not correct due to disconnection, etc.,
No current flows in the light emitting diodes 41 and 42 and the LEDs do not light up. FIG. 5 shows the relationship between the lighting of the light emitting diodes 41 and 42 and the state of connection to the central line. In this way, the modular plug to which the local line is connected is inserted into the modular jack 3 provided in the handle portion 20 of the driver, and as shown in FIG. 5, depending on whether the light emitting diodes 41 and 42 are lit at this time. The connection status to the central office line can be detected. In the case of the second embodiment, since the handle portion 20 of the driver is made transparent and the light emitting diodes 41, 42 are attached inside the transparent handle portion 20, the light emitting diodes 41, 42 are in the lighting state. Is very easy to see.
Further, since the light emitting colors of the light emitting diodes 41 and 42 are made different, the connection state can be easily discriminated by the light emitting color.

In the first and second embodiments, the shape is one that is normally used as a driver, but a driver with voltage detection may be used as another driver. In this case, the function of the driver, the power detection function, and the polarity detection function can be realized by one driver, and work such as construction can be performed more efficiently.

[Effect of device]

As described above, the driver with polarity detection function according to the present invention detects the function as a tool indispensable for construction of telephones and the quality of connection of the modular plug to the central line by the construction of one driver. This has the effect that the functions can be realized together, and the operability and efficiency of work and the like can be improved.

Further, since the present invention can be approximately the same size as the driver, it is convenient to carry and has the advantage that it can be easily carried with other tools.

[Brief description of drawings]

FIG. 1 shows the first embodiment of the present invention, and FIG. 2 shows the first embodiment.
FIG. 3 is a diagram showing the electrical connection relation of the embodiment, FIG. 3 is a diagram showing the second embodiment of the present invention, FIG. 4 is a diagram showing the electrical connection relation of the second embodiment, and FIG. The figure is a diagram showing the relationship between lighting and connection state of the light emitting diode according to the second embodiment. 1 ... Bit axis, 2 ... Handle, 3 ... Modular jack, 4 ... Light emitting diode.

Claims (1)

[Scope of utility model registration request] 1. A driver used for screwing or unscrewing a screw or the like, wherein a modular jack and a light emitting diode connected between terminals of the modular jack are provided in a handle portion of the driver. Characteristic driver with polarity detection function.