JPH0429381Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a water level gauge that uses a measuring tape.

(Prior art) Conventionally, according to Japanese Utility Model Publication No. 42-10526, there was a handle-less type that was placed on top of a tank, and the main body of the tape measure was irremovably connected to the winding drum, and a battery, switch, and variable The main part of the electrical alarm circuit consisting of a resistor, an ammeter, etc. is provided on the outer case used in a fixed state, and the signal catch terminal is provided on the tape measure body that moves when in use, so that the main part and the terminal are electrically connected. The conductive band is provided by printing, and the printed conductive band is electrically insulated from the metal tape measure body and insulating paint, and the main part and terminal of the electric alarm circuit are provided on the side of the outer case that is used in a fixed state. A contactor (see reference numeral 18 in the same publication) and a rotating ring provided on the side of the rotating take-up reel (see reference numeral 15 in the same publication)
An empty gauge for measuring tank water level is disclosed in which electricity is relayed to prevent lead wires from tangling.

(Problem to be solved by the invention) The empty measuring tape for tank water level measurement described in the above-mentioned prior art is a type without a handle that is used by placing it on top of the tank. There is an inconvenience in that it cannot be used to feed or wind up the main body, and since the tape measure main body is connected to the winding drum in a non-removable manner, it is not convenient to use it by arbitrarily replacing it with a tape measure main body of a different size. The main part of the electric alarm circuit, which consists of batteries, switches, variable resistors, ammeters, etc., is installed in the outer case that is used in a fixed state, and the terminal for the signal catch is installed in the main body of the tape measure that moves when in use. The main part of the circuit and the terminals are a contact provided on the side of the outer case used in a fixed state (see reference numeral 18 in the same publication) and a rotating ring provided on the side of the rotating take-up reel (see reference numeral 15 in the same publication).
(Reference)), the power is relayed to prevent the lead wires from tangling, and there is a risk of poor contact between the contact and the rotating ring. The conductive band that makes the terminal electrically conductive is provided by printing, and the printed conductive band is electrically insulated from the metal tape measure body with insulating paint, so it is prone to disconnection and dielectric breakdown and has a long lifespan. It had some disadvantages, such as being inferior to

The object of the present invention is to provide a new water level gauge using a measuring tape that eliminates the above-mentioned drawbacks.

(Means for Solving the Problems) In order to achieve the above object, the water level gauge using the tape measure tape of the present invention includes a winding drum 12 rotatably supported in a frame 4 with a handle 3, and a frame. a rotational operation handle 13 for rotating the winding drum 12 provided outside the body 4;
A notch 18 for fitting male and female connectors provided on the circumferential surface of the winding drum 12, a recess 19 bored at the bottom of the notch 18, and a two-pole female connector 20 fitted into the recess 19 in a manner that cannot be removed. , a male connector 27 that is detachable from the female connector 20 , and a tape measure tape 25 with a dimensional scale 26 made of an insulating material and containing a fiber thread 22 whose one end is connected to the male connector 27 and wound around the winding drum 12 . A closed circuit is formed by a two-pole probe 42 fixed to the other end of the measuring tape 25 and catching the electric resistance of the liquid as a signal when the liquid lands, and the signal from the probe 42 provided on the handle 13. an electric alarm circuit and a battery for the circuit;
A pair of tape measure tapes 25 are embedded in a state in which signals from each pole of the probe 42 are transmitted to an electrical alarm circuit via each pole of the male and female connectors 20 and 27, and in a state in which they are separated over the entire length by an insulating material. It has twisted conductor wires 23, 23'.

(Function) and (Effects of the Invention) The water level gauge using a tape measure according to the present invention has all parts attached to a frame body 4 with a handle 3, and can be held in one hand and used with the tape measure in the other hand. It can be used to feed out and wind up the main body, and is highly portable and easy to use.After unwinding the measuring tape, the male connector 27 can be removed from the female connector 20. Measuring tape 2
5 can be removed from the tape measure drum 12, and if you have several tape measure bodies with different lengths and sizes available, you can replace them as you like, which is useful. Electrical related parts such as the electrical alarm circuit, the battery for the circuit, the probe 42, and the conductive wires 23, 23' are provided in the parts that move when rotating, and are not provided in the parts that do not move. This can be carried out without using sliding contact type relay components that are likely to cause contact failure accidents such as a slip spring mechanism consisting of This tape measure tape 25 has twisted conductor wires 2 for transmitting signals from each pole of the probe 42 to each pole of the male and female connectors 20 and 27.
3 and 23' are embedded in an insulating material so as to be spaced apart over the entire length, so wire breakage and dielectric breakdown are less likely to occur, and durability is excellent.
2 is provided with a notch 18 for fitting the male and female connectors, and the male and female connectors 20 and 27 are fitted into the notch 18, so that when the tape measure tape 25 is wound around the winding drum 12, the tape measure tape 25 is distorted. This has excellent effects such as not creating an unsightly shape.

(Embodiment) In the embodiment shown in the figure, a cross-shaped frame 5 having a handle 3 at the upper end and a stone protrusion 4 at the lower end is constructed by attaching hard plastic left and right members 1 and 1' with screws 2. A pair of feed rolls 6, 6' are provided near the lower end of the frame 5, and large and small diameter shaft holes 7, 7' are provided at the center of the left and right members 1, 1'. Separately, we installed an integrated small-diameter shaft 9 on the left side using hard plastic, and a screw 1 on the right side.
A winding drum 12 is constructed which is provided with separate large diameter shafts 11 according to 0, and the winding drums 12 are inserted between the left and right members 1 and 1' to form a small diameter shaft 9. The large-diameter shaft 11 is rotatably fitted into the large-diameter shaft hole 7', respectively, and the rotary operation handle 13 is rotatably supported on the outer end of the large-diameter shaft 11 with a free rotation knob 13' at the tip. An electric circuit board 14, a buzzer 48, and a box 17 for a battery 16 are integrally provided on the outer surface of the operating handle 13, and a notch 18 for fitting a male connector is provided on the circumferential surface of the winding drum 12 at the bottom of the notch 18. A recess 19 is formed respectively, a female connector 20 is irremovably fitted into the recess 19, and the female connector 20 and the electric circuit board 14 are connected by lead wires 21, 21'. Separately, a large number of glass fiber threads 22 and two twisted conductive wires 23, 23' are arranged so that the twisted conductive wires 23, 23' are arranged apart from each other, and the outer peripheral surface of the arranged body is made of soft synthetic resin. A tape measure tape 25 is constructed by being coated with the material 24, and a dimension scale 26 is displayed on the surface of the tape measure tape 25, and a bipolar male connector 2 is attached to one end of the tape measure tape 25.
7, with each pole of the male connector 27 connected to one end of each of the twisted conductor wires 23, 23',
Separately from these, there is a substrate 32 made of an insulating material, which consists of a pipe 30 for attaching an electrode and a plate part 31 for connecting a tape measure, in a tube body 29 made of a conductive material such as stainless steel.
is fixed with one screw 33, a bolt-shaped zero value detection electrode 34 is inserted into the electrode mounting pipe 30 from below, and the upper end of this electrode 34 is connected to the pipe 3.
The zero value point 36 is determined by screwing a nut 35 onto the protruding end, and the tube body 29 and zero value detection are performed by tightening the fixing screw 33 of the board 32 and the nut 35. electrode 34
A probe 42 is constructed by attaching the terminals 37 and 38 in contact with each other, and the other end of the measuring tape 25 is inserted into the probe 42 from above, and the other end is attached to the plate portion 31 with a screw 39'. and fixed with a clamping plate 39 made of an insulating material, and the other ends of the twisted conductors 23 and 23' are connected to each terminal 37 and 38, and an insulating synthetic resin 4
0 is filled and hardened, and a rubber cover 41 is placed on the tube body 29.
It is coated with

In the figure, 43 and 43' are the locations corresponding to the zero value point 36 in the tube body 29 and communication holes opened on the bottom surface of the tube body 29, 44 is a probe holder, 45 is an on/off switch, and 46 is a power source. For display
47 is a water detection display LED, 48 is a water detection alarm buzzer, 49 is a transistor, 50 is an IC circuit, and 51 is a resistor.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view showing an embodiment of the water level meter using the tape measure tape of the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a cross-sectional view taken along the line A'-A' in Fig. 1. 4 is a sectional view showing a portion where the tape measure tape is attached to the winding drum, FIG. 5 is a structural diagram of the tape measure tape, and FIG. 6 is an overall electrical circuit diagram. 1, 1'... Left and right parts, 2... Screws, 3...
Handle, 4... Stone protrusion, 5... Frame, 6, 6'...
Feeding roll, 7, 7'...shaft hole, 9...small diameter shaft,
10... Screw, 11... Large diameter shaft, 12... Winding drum, 13... Operation handle, 13'... Idle knob, 14... Electrical information circuit board, 16... Battery, 17... Box , 18...notch, 19...
Recess, 20...Female connector, 21, 21'...Lead wire, 22...Glass fiber thread, 23, 23'...
... Twisted conductor wire, 24 ... Synthetic resin material, 25 ... Tape measure tape, 26 ... Dimensional scale, 27 ... Male connector, 29 ... Tube body, 30 ... Pipe, 31 ... Plate, 32 ... Board , 33... screw, 34... electrode, 35... nut, 36... zero value point, 37,
38...terminal, 39...pinching plate, 40...
Synthetic resin, 41... Rubber cover, 42... Probe, 43, 43'... Distribution hole, 44... Probe holder, 45... On/off switch, 46, 4
7...LED, 48...buzzer, 49...transistor, 50...IC circuit, 51...resistance, 52
...ceramic capacitor.

Claims (1)

[Scope of utility model registration request] A winding drum 12 rotatably supported in a frame 4 with a handle 3; a rotation operation handle 13 for rotating the winding drum 12 provided outside the frame 4;
A notch 18 for fitting male and female connectors provided on the circumferential surface of the winding drum 12, a recess 19 bored at the bottom of the notch 18, and a two-pole female connector 20 fitted into the recess 19 in a manner that cannot be removed. , a female connector 27 that is detachable from the female connector 20 , and a tape measure tape 25 with a dimensional scale 26 made of an insulating material and containing a fiber thread 22 whose one end is connected to the female connector 27 and wound around the winding drum 12 . A closed circuit is formed by a two-pole probe 42 fixed to the other end of the measuring tape 25 and catching the electric resistance of the liquid as a signal when the liquid lands, and the signal from the probe 42 provided on the handle 13. an electric alarm circuit and a battery for the circuit;
A pair of tape measure tapes 25 are embedded in a state in which signals from each pole of the probe 42 are transmitted to an electrical alarm circuit via each pole of the male and female connectors 20 and 27, and in a state in which they are separated over the entire length by an insulating material. A water level gauge using a measuring tape, characterized in that it has twisted conductor wires 23, 23'.