JPH0438264Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a probe in a water level gauge that uses a measuring tape.

(Prior art) Conventionally, a rod-shaped electrode body is inserted into a tubular electrode body, one conductive wire is connected to the tubular electrode body, and the other conductive wire is connected to the rod-shaped electrode body, and an electrically insulating resin such as epoxy resin is applied to the tubular electrode body. Structures are known in which the tubular electrode body, the rod-shaped electrode body, the connection point of the conductor, and a part of the conductor are fixed by filling it with a mold or coating it on the outside. . (Refer to Utility Model Application Publication No. 54-6966) (Problem to be solved by the invention) The structure described in the above-mentioned prior art is as follows:
In order to obtain a product in which the rod-shaped electrode body is fixed in a fixed dimensional position within the tubular electrode body, a sophisticated and accurate molding technique for electrically insulating resin is required.

The object of the present invention is to provide a new probe for a water level gauge that uses a measuring tape, which does not require sophisticated and accurate molding technology for electrically insulating resin using a mold.

(Means for Solving the Problems) In order to achieve the above object, the probe in the water level meter using the tape measure tape of the present invention includes a pipe 30 for attaching an electrode that also serves as a bottom plate 53 and a tape measure tape connected in a tube body 29 made of a conductive material. A substrate 32 made of an insulating material consisting of a plate portion 31 is inserted and fixed in a non-conductive state with screws 33, a zero value detection electrode 34 is inserted from below into the electrode mounting pipe 30, and the upper end of this electrode 34 is connected to the pipe. 30 and screwing a nut 35 onto the protruding end, a zero value point 36 is determined, and a terminal 37 is attached to the pipe body 29 by tightening the fixing screw 33.
In addition, each terminal 38 is fixed to the zero value detection electrode 34 by tightening the nut 35, and the end of the measuring tape 25 is inserted into the pipe 30 from above, and the same end is attached to the plate part 31 with a screw 39' and an insulator. It is fixed by the material clamping plate 39 and each terminal 37,
The conductors 23 and 23' embedded in the tape measure tape 25 to the electric alarm circuit etc. are connected to 38, and when this connection is completed, the insulating synthetic resin 40 is filled into the tube body 29 and hardened, and the tube body 29 is A rubber cover 41 is attached, and communication holes 43 and 4 are formed in the tube body 29 at a location corresponding to the zero value point 36 and on the lower surface of the tube body 29.
3' was established.

(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 in which separate large-diameter shafts 11 according to the invention are provided, 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, an insulating material substrate 32 consisting of an electrode mounting pipe 30 which also serves as a bottom plate 53 and a measuring tape connecting plate portion 31 is fixed in a tube body 29 made of a conductive material such as stainless steel with a single screw 33. Then, insert the bolt-shaped zero value detection electrode 34 into the electrode mounting pipe 30 from below, and
By protruding the upper end of 4 onto the pipe 30 and screwing the nut 35 onto the protruding end, the zero value point 36 is set.
At the same time, fixing screws 33 of the board 32 are determined.
The probe 42 is constructed by attaching the terminals 37 and 38 in contact with the tube body 29 and the zero value detection electrode 34 by tightening the nut 35, and inserting the measuring tape 25 into the probe 42 from above. inserting the other end and fixing the same end to the plate part 31 with a screw 39' and an insulating material clamping plate 39, and connecting the other end of each of the twisted conductor wires 23, 23' to each terminal 37, 38, Further, the tube body 29 is filled with an insulating synthetic resin 40 and hardened.
9 is covered with a rubber cover 41.

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.

That is, the water level gauge of the above embodiment has an on/off switch 4.
5 is turned on to turn on the power display LED 46, remove the probe 42 from the probe holder 44, turn the operating handle 13, and insert the probe 42 into the measurement hole etc. to sound the buzzer 48 and turn on the water detection display LED 47. Lower it to the point where it lights up, and when it sounds and lights up, press the measuring tape 25
It is used for purposes such as measuring the height of the water surface by directly reading the dimension scale.

(Function) The present invention inserts an insulating material substrate 32 consisting of an electrode mounting pipe 30 which also serves as a bottom plate 53 and a measuring tape connecting plate portion 31 into a conductive material tube body 29 and makes it non-conductive with screws 33. The zero value detection electrode 34 is inserted into the electrode mounting pipe 30 from below, and the upper end of this electrode 34 is inserted into the pipe 30.
The zero value point 36 is determined by screwing the nut 35 onto the protruding end, and the terminal 37 is attached to the pipe body 29 by tightening the fixing screw 33, and the nut 35 is tightened. Terminals 38 are each fixed to the zero value detection electrode 34 by attachment, and the end of the measuring tape 25 is inserted into the pipe 30 from above, and the same end is fixed to the plate part 31 with the screw 39' and the insulating material clamping plate 39. In addition, tape measure tape 2 is attached to each terminal 37 and 38 to connect the electric alarm circuit, etc.
Connect the conductive wires 23, 23' embedded in the pipe body 5, and insert the insulating synthetic resin 40 into the pipe body 29 when the connection is completed.
is filled and hardened, and a rubber cover 4 is attached to the tube body 29.
1 is applied, and further a zero value point 36 is applied on the tube body 29.
Since the communication holes 43, 43 are opened at the corresponding locations and on the lower surface of the tube body 29, first, the tube body 29, the substrate 32, the electrode 34, and the screw 3 are opened.
3. After configuring the nut 35, terminals 37, 38, measuring tape 25, clamping plate 39, screw 39', and rubber cover 41, attach the electrode 3 to the substrate 32.
4. Attach the measuring tape 25 and the terminals 37 and 38 using the nuts 35, the clamping plate 39, and the screws 39', and connect the conductors 23 and 2 to the terminals 37 and 38.
3' with solder, and then attach the board 32 to the tube body 2.
9 and screwed together with screws 33, and in this screwed state, the insulating synthetic resin 40 is filled and hardened into the tube body 29, and then a rubber cover 41 is attached. It is something that can be done.

(Effects of the invention) The probe according to the invention can be obtained by performing the steps described in the above operation, and can be obtained without using sophisticated and accurate molding technology using a mold. It is.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view showing an embodiment of a probe in a water level meter using the tape measure tape of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a view similar to Fig. 1.
A cross-sectional view taken along the line A'-A'; Figure 4 is a cross-sectional view showing the attachment part of the tape measure tape to the winding drum;
The figure is an explanatory diagram of the structure of the measuring 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, 53...bottom plate.

Claims (1)

[Scope of utility model registration request] An insulating material substrate 32 consisting of an electrode mounting pipe 30 which also serves as a bottom plate 53 and a measuring tape connecting plate portion 31 is inserted into the conductive material tube body 29 and fixed in a non-conductive state with screws 33 for electrode mounting. The zero value point 36 is determined by inserting the zero value detection electrode 34 into the pipe 30 from below, protruding the upper end of the electrode 34 onto the pipe 30, and screwing the nut 35 onto the protruding end. The terminal 37 is attached to the pipe body 29 by tightening the fixing screw 33.
In addition, each terminal 38 is fixed to the zero value detection electrode 34 by tightening the nut 35, and the end of the measuring tape 25 is inserted into the pipe 30 from above, and the same end is attached to the plate part 31 with a screw 39' and an insulator. It is fixed by the material clamping plate 39 and each terminal 37,
The conductors 23 and 23' embedded in the tape measure tape 25 to the electric alarm circuit etc. are connected to 38, and when this connection is completed, the insulating synthetic resin 40 is filled into the tube body 29 and hardened, and the tube body 29 is A rubber cover 41 is attached, and communication holes 43 and 4 are formed in the tube body 29 at a location corresponding to the zero value point 36 and on the lower surface of the tube body 29.
A probe for a water level gauge using a measuring tape, characterized by having a 3' opening.