JPH03215713A - Transmitter for automatic power generation type water supply meter - Google Patents

Abstract

PURPOSE:To incorporate a power generating mechanism in an indication part for size reduction and to provide a magnet with two poles and to increase an electromotive force by providing a couple of cores which face the N and S poles of a rotor at both ends of an electromagnetic coil wound around an iron core and the iron core. CONSTITUTION:An impeller 4 is rotated by running water flowing in from the intake body 2 of a water supply meter main body 1 and its rotating speed is transmitted to a gear 28 through a magnet coupling 30. The rotation of the gear 28 is transmitted to a number wheel 33 as an indicating mechanism through a speed reducing gear group 31 to indicate the flow rate. The speed reducing gear group 31 is associated with the power generating mechanism 36 through an intermittent fast forwarding mechanism 35. When the magnet 37 of the power generating mechanism 36 is in a stationary state, 1st and 2nd cores 41 and 42 are attracted, but when the magnet 37 makes a half turn by the fast feeding mechanism 35 at each unit flow rate, the 1st core 42 and 2nd core 42 are inverted in magnetic polarity to induce an electromotive force at an electromagnetic coil 40, thereby enabling transmission to a remote reception part.

Description

DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention] (Industrial Application Field) The present invention relates to a transmitting device for an automatic power generation type water meter with an improved power generation mechanism.

(Prior Art) An automatic power generation water meter is known as a remote meter that does not require an external power source. This automatic power generation type water meter is constructed as shown in FIGS. 6 to 8. That is, 1 is an impeller type water meter body, and this water meter body 1 is provided with an inlet 2 and an outlet 3.

An impeller 4 is provided inside the water meter main body 1,
This rotating shaft 5 is interlocked with one magnetic joint 9 of a magnetic coupling 8 via a reduction gear group 7 constituting a flow rate measuring section 6, and is also connected to an indicating section 10 of the water meter main body 1.
It is linked to.

A cylindrical transmitter case 11 constituting a transmitter is mounted on the indicator 10 of the water meter main body 1, and the other magnetic coupling 12 of the magnetic coupling 8 is provided inside the transmitter case 11. There is. The rotation of the magnetic coupling 12 is linked to the intermittent rapid feed mechanism 14 via a reduction gear group 13 that constitutes a transmission mechanism. Furthermore, the intermittent rapid forwarding mechanism 1
4 is linked to a power generation mechanism 15. The intermittent rapid forwarding mechanism 14 is composed of a cam, a locking mechanism 16 and a mainspring spring 17. When the cam rotates and fits into one position of the locking gear, the energy stored in the mainspring spring 17 is instantaneously transferred to the power generating mechanism 15. It rotates to generate voltage.

As shown in FIGS. 9 and 10, the power generation mechanism 15 includes an electromagnetic coil 15b wound around an iron core 15a.

The magnet 15c has four poles, and as shown in FIG. 10, when the magnet 15c is stationary, the first and second cores 15d,
15e, and the first core 1 is attached to the iron core 15a.
5 d+. : S pole, second core 15e is magnetized to N pole. From this state, when the magnet 15c is rotated 90" by the intermittent fast-forwarding mechanism 14, the first core 15d1
The polarity of magnetization of the second core 15e is reversed to generate an induced electromotive force in the electromagnetic coil 15b, which is transmitted to a receiving section (not shown).

Therefore, the impeller 4 is rotated by the tap water flowing in from the inlet body 2 of the water meter main body 1, and this rotational speed is transmitted from the intermittent rapid feed mechanism 14 via the magnetic coupling 8 and the reduction gear/wheel group 13. The magnet 15c of the power generating mechanism 15 is connected to the power generating mechanism 15, and when it is stationary, it is attracted to the first and second cores 15d and 15e. When rotated, the first core 15d1 second
The polarity of magnetization of the core 15e of the electromagnetic coil 1 is reversed.
An induced electromotive force is generated at 5b and transmitted to a remote receiving section (not shown).

(Problem 8 to be Solved by the Invention) However, in the automatic power generation type water meter configured as described above, the cylindrical transmitter case 11 constituting the transmitter is mounted on the indicator 10 of the water meter main body 1. The power generation mechanism 15 built into the transmitter case 11 is composed of a magnet 15c, an iron core 15a provided on the upper part of the magnet 15C, an electromagnetic coil 15b, and first and second cores 15d and 15e. It is configured. Therefore, there is a problem in that the transmitting device becomes vertically long, and the entire automatic power generation type water meter including the transmitting device becomes large-sized, and the installation location is restricted.

This invention was made in view of the above-mentioned circumstances.The purpose of this invention is to incorporate the power generation mechanism into the indicator part, to create a structure that is compact and free from restrictions on the installation location, and to have a core with two poles. The object of the present invention is to provide an automatic power generation type water meter that can increase the electromotive force.

[Structure of the invention]

(Means and effects for solving the problem) In order to achieve the above-mentioned object, the present invention provides a power generation mechanism that is rotatably provided in a standing position inside a transmitter case provided in a water meter main body. , a rotor with north and south poles symmetrically provided around the axis, an iron core installed next to the rotor in a state perpendicular to the rotor, and an electromagnetic coil wound around this iron core. , a pair of cores provided at both ends of the iron core and facing the north and south poles of the rotor.

When one core is drawn to the north pole of the rotor and the other core is drawn to the south pole, the iron core on one core side is magnetized to the north pole, and the iron core on the other core side is magnetized to the south pole. When the rotor is magnetized and rotates half a revolution from this state by the intermittent rapid feed mechanism, the polarity of both cores is reversed and an induced electromotive force is generated in the electromagnetic coil.

(Embodiment) Hereinafter, an embodiment of the present invention will be described based on the drawings, but since the water meter has the same structure as the conventional one, the explanation will be omitted.

Reference numeral 20 shown in FIGS. 1 and 2 is a transmitting device provided inside the water meter main body 1. As shown in FIG. Reference numeral 21 denotes a transmitter case, which is composed of an upper case 21a having a cylindrical shape with a head and a lower case 2lb having a cylindrical shape with a bottom. The peripheral wall of the upper case 21a is inserted into the peripheral wall of the lower case 2lb, and the transmitter case 21 is fitted into the opening 22 of the water meter main body 1. A flange portion 21c provided on the outer peripheral wall of the upper case 21H is engaged with an edge 22a of the opening 22. Further, the flange portion 21c is tightened by a tightening ring 23 that is screwed onto the edge 22a of the water meter main body 1, and the transmitter case 21 is provided to be detachable from the water meter main body.

A partition plate 2 is installed approximately in the middle of the transmitter case 21.
5 is provided, and a bearing plate 26 is provided at the lower stage. A pin 27 projecting downward is provided approximately at the center of the partition plate 25, and a gear 28 is rotatably supported on this pin 27. A magnetic coupling 29 facing substantially the center of the bottom plate 22 is fixed to this gear 28, forming a magnetic coupling 30. The gear 28 includes a reduction gear [3] that constitutes a transmission mechanism that is rotatably supported between the partition plate 25 and the bearing plate 26.
This reduction gear group 31 is interlocked with a number wheel 33 as an indicating mechanism via a transmission shaft 32. Note that this number wheel 33 corresponds to the instruction window 3 of the transmitter case 21.
It is facing 4.

The reduction gear group 31 is an intermittent rapid feed mechanism 35 similar to the conventional one.
is linked to the power generation mechanism 36 via the power generation mechanism 3.
6 is provided on the upper part of the partition plate 25 and adjacent to the number wheel 33.

The power generation mechanism 36 is constructed as shown in FIGS. 3 to 5. That is, 37 is a cylindrical magnet as a rotor, which is rotatably provided in the transmitter case 21 in an upright position. It is linked to the department. This magnet 37 has a north pole and a south pole arranged symmetrically around the axis. An iron core 38 is provided adjacent to the magnet 37 in a state perpendicular thereto, that is, in the lateral direction. This iron core 38 is inserted into a bobbin 39, and an electromagnetic coil 40 is wound around this bobbin 39. A first core 41 is provided at one end of the iron core 38, and a second core 42 is provided at the other end.
The cores 41 and 42 are provided with arcuate portions 41a and 42a facing the north and south poles of the magnet 37, respectively.

As shown in FIG. 3, when the magnet 37 is stationary, it is attracted to the first and second cores 41 and 42, and the iron core 38 of the first core 41 has an N pole and the second core 42 has an N pole. The iron core 38 is magnetized to the south pole.

From this state, the magnet 3 is moved by the intermittent rapid feed mechanism 35.
7 rotates half a rotation, the polarity of the magnetization of the first core 41 and the second core 42 is reversed, and an induced electromotive force is generated in the electromagnetic coil 40, which is transmitted to the receiving section (not shown). do.

Therefore, the impeller 4 is rotated by the tap water flowing in from the inlet body 2 of the water meter main body 1, and this rotational speed is transmitted to the granite wheel 28 via the magnetic coupling 30. The rotation of the gear 28 is transmitted via a reduction gear group 31 to a number wheel 33 as an indicating mechanism to indicate the flow rate. The reduction gear group 31 is linked to the power generation mechanism 36 via an intermittent fast forwarder F1435, and when the magnet 37 of the generator @36 is stationary, it is attracted to the first and second cores 41 and 42. , when the magnet 37 rotates half a turn by the intermittent rapid feed mechanism 35 for each unit flow rate, the first coil 741
, the polarity of magnetization of the second core 42 is reversed, and an induced electromotive force is generated in the electromagnetic coil 40, which is transmitted to a remote receiving section (not shown).

The transmitter 20 configured in this manner has a magnet 37 that constitutes a power generation mechanism 36 inside the transmitter case 21.
Since the transmitter case 21 and the electromagnetic coil 40 including the iron core 38 are provided adjacent to each other in the lateral direction, the transmitter case 21 can be housed inside the water meter main body 1, and the overall configuration can be made smaller.

In the above embodiment, the cylindrical magnet 37 was used as the rotor, but any magnet may be used as long as the different poles are provided symmetrically. good.

[Effects of the Invention] As explained above, in the present invention, the power generating mechanism is rotatably provided in an upright position inside the transmitter case housed inside the water meter main body, and N A rotor in which poles and S poles are symmetrically provided, an iron core provided next to the rotor in a state orthogonal to the rotor, an electromagnetic coil wound around this iron core, and an electromagnetic coil provided at both ends of the iron core. Since the generator consists of a pair of cores facing the north and south poles of the rotor, the generator itself can be made smaller, the height of the water meter can be made smaller than before, and the overall structure can be made smaller. can be converted into Therefore, there are no restrictions on the installation location of the automatic power generation type water meter. Furthermore, since the core has a bipolar shape in order to increase the induced electromotive force of the power generation mechanism, the torque is reduced, the amount of starting current is also reduced, and the performance of the water meter is improved.

[Brief explanation of drawings]

Figures 1 to 5 show an embodiment of the present invention, in which Figure 1 is a vertical side view of an automatic power generation water meter, Figure 2 is a vertical side view of the transmitter, and Figure 3 is a numeric wheel. and a plan view of the power generation mechanism, Figure 4 is a cross-sectional plan view of the power generation mechanism, Figure 5 is a vertical cross-sectional side view of the power generation mechanism, Figure 6 is a front view of a conventional automatic power generation water meter, and Figure 7 is the same plane. 8 are perspective views of a flow rate measuring section and a transmitting section, and FIGS. 9 and 10 are explanatory diagrams of a conventional power generation mechanism. DESCRIPTION OF SYMBOLS 1... Water meter main body, 20... Transmission device, 21.
- Transmitter case, 3 6... Power generation mechanism, 3 7... Magnet (rotor) 3 8... Iron core, 4 0... Electromagnetic coil, 4 1 4 2... Core.

Claims (1)

[Claims] The water meter body is provided with a transmitter case that incorporates a power generation mechanism and a transmission mechanism that transmits power from the flow rate measuring section via a magnetic coupling, and the power generation mechanism is rotated in a standing position inside the transmitter case. A rotor that is freely provided and rotates in intermittent fast forward motion in conjunction with the transmission mechanism, and has north and south poles symmetrically provided around the axis, and a rotor that is arranged perpendicularly to the rotor on the side adjacent to the rotor. An automatic power generator characterized by comprising an iron core provided, an electromagnetic coil wound around the iron core, and a pair of cores provided at both ends of the iron core and facing the north and south poles of the rotor. Water meter transmitter.