JP2018179540A - Electronic energy meter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic energy meter that can be used for both a high-pressure gauge and a low-pressure gauge.SOLUTION: An electronic energy meter comprises: a basic base formed in a concave shape using a front wall part, a rear wall part, a first side wall part, and a second side wall part; a power terminal part disposed from the first side wall part toward a center part on the side of the front wall part of the basic base, and formed integrally with the basic base; a shared space positioned amongst a power terminal side wall part of the power terminal part, the front wall part and the second side wall part; and a middle base mounted on the basic base. The electronic energy meter further includes: a first engaging body provided at an inner face of the front wall part of the basic base; a second engaging body provided at an inner face of the second side wall part of the basic base positioned at the shared space; a third engaging body provided at the power terminal side wall part of the power terminal part; and a power terminal holding part provided for holding the power terminal part to the middle base.SELECTED DRAWING: Figure 4

Description

  The present invention relates to, for example, an electronic watt-hour meter in which a meter for measuring the amount of power is housed, and more particularly to a power supply terminal portion disposed on a basic base and a mid-base structure mounted on the basic base.

  The conventional electronic watt-hour meter arranges the switch section at the upper or lower part with respect to the metering pulse service terminal and the communication terminal, and further concaves the metering pulse service terminal, the communication terminal and the switch section separately from the terminal block. It is characterized in that it is incorporated into a separate piece block of a shape, and the separate piece block is incorporated into a terminal block as a unit.

  In addition to the setting operation unit for setting the processing unit, the terminal block may be provided with an interface unit that causes the processing unit to communicate from the outside and output processed data processed by the processing unit. The face portion is configured to be disposed other than the face on which the setting operation portion of the terminal block is disposed in view of the mounting space.

JP 2002-365314 A

  The conventional electronic watt-hour meter mentioned above is for high pressure instruments and low pressure instruments. For high pressure instruments, screw terminal of resin (power supply terminal + communication · pulse terminal) on basic base made of iron It has a structure that

  The communication and pulse terminals are necessary only for the high-pressure meter of the electronic watt-hour meter, and the terminal of the high-pressure meter and the terminal of the low-pressure meter are dedicated terminals. The power terminal of the high-voltage instrument terminal and the power terminal of the low-voltage instrument have the same dimensions and can be shared. However, to share the power terminal, the communication / pulse terminal must be powered. There is a problem that it is necessary to separate from the terminal and screw the power supply terminal and the communication and pulse terminal to the basic base.

  Since the rubber packing is used to fill the gap between the basic base and the terminal and to fix the terminal fitting, the method of fixing the communication / pulse terminal and the basic base and the gap to prevent foreign matter from entering The issue is what to do with the filling.

  Also, for high-voltage meters of electronic watt-hour meters, the communication / pulse terminal section simultaneously has three components (a board with modular jacks and switches, a board with earphone jacks and switches, and a jack spacer) simultaneously in one direction. It is necessary to insert into the substrate storage space from the above, and since it is the structure which can not insert each substrate alone, there existed a problem that the freedom degree of assemblability was low.

The present invention has been made to solve the problems as described above, and its object is to provide a basic base integrally formed with power supply terminal portions for sharing high pressure instruments and low pressure instruments. An electronic energy meter capable of realizing sharing of high pressure instruments and low pressure instruments can be provided by arranging a combined use space capable of accommodating a communication / pulse terminal section on the side wall section side.

  According to the present invention, there is provided an electronic watt-hour meter comprising: a basic base formed in a concave shape by a front wall, a rear wall, a first side wall, and a second side wall; Between a power supply terminal portion which is disposed from the first side wall portion to the central portion and integrally formed with the basic base, and between the power supply terminal side wall portion of the power supply terminal portion, the front wall portion and the second side wall portion The joint base is provided with a central space mounted on the basic base, and a first engaging body is provided on an inner surface of the front wall portion of the basic base, and the basic base is provided in the common space. A second engagement body is provided on the inner surface of the second side wall portion, a third engagement body is provided on the power supply terminal side wall portion of the power supply terminal portion, and a power supply terminal pressing portion for holding the power supply terminal portion is provided on the middle base It is

  According to the electronic watt-hour meter according to the present invention, the power supply terminal part sharing the high pressure instrument and the low pressure instrument is integrally formed with the basic base, and the side wall part side of the power supply terminal of the basic base By arranging the combined space which can accommodate the pulse terminal part, it is possible to obtain an electronic power meter capable of realizing sharing for high-pressure and low-pressure instruments.

It is a top view which shows the electronic energy meter concerning Embodiment 1 of this invention. It is a top view which shows the state which removed the instrument cover in the electronic energy meter concerning Embodiment 1 of this invention. It is a front view of FIG. 2 which shows the electronic-type energy meter concerning Embodiment 1 of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is an expansion | deployment perspective view which shows the electronic-type energy meter concerning Embodiment 1 of this invention. It is a top view which shows the basic base in the electronic energy meter concerning Embodiment 1 of this invention. It is a perspective view which shows the basic base in the electronic energy meter concerning Embodiment 1 of this invention. It is a top view which shows the communication * pulse terminal part in the electronic energy meter concerning Embodiment 1 of this invention. It is a front view which shows the communication * pulse terminal part in the electronic energy meter concerning Embodiment 1 of this invention. It is a perspective view which shows the communication * pulse terminal part in the electronic energy meter concerning Embodiment 1 of this invention. It is the principal part perspective view which shows the state which looked at the state which mounts the communication * pulse terminal part in a basic base in the electronic-type energy meter concerning Embodiment 1 of this invention from the front. It is the principal part perspective view which shows the state which looked at the state which mounts the communication * pulse terminal part in a basic base in the electronic-type energy meter concerning Embodiment 1 of this invention from the back. It is a whole perspective view which shows the state which mounts | wears with a basic base the communication * pulse terminal part in the electronic-type energy meter concerning Embodiment 1 of this invention. It is an expanded perspective view which shows the state which attaches an inside base to the basic base in the electronic energy meter concerning Embodiment 1 of this invention. It is a perspective view which shows the inside base in the electronic energy meter concerning Embodiment 1 of this invention. It is a front view which shows the inside base in the electronic energy meter concerning Embodiment 1 of this invention. It is sectional drawing in the CC line of FIG. 14 which shows the electronic energy meter concerning Embodiment 1 of this invention. It is sectional drawing in the AA line of FIG. 2 which shows the electronic energy meter concerning Embodiment 1 of this invention. It is an expanded sectional view of the D section of FIG. 17 which shows the electronic energy meter concerning Embodiment 1 of this invention. It is a perspective view which shows the 2nd terminal metal fitting in the electronic energy meter concerning Embodiment 1 of this invention. It is a schematic cross section which shows the state which mounts | wears with a basic base the communication * pulse terminal part in the electronic-type energy meter concerning Embodiment 1 of this invention. It is sectional drawing in the AA line of FIG. 2 which shows the electronic energy meter concerning Embodiment 1 of this invention. It is an expanded sectional view of the E section of FIG. 21 which shows the electronic energy meter concerning Embodiment 1 of this invention. It is a perspective view which shows the 1st terminal metal fitting in the electronic energy meter concerning Embodiment 1 of this invention. It is a schematic cross section which shows the state which mounts | wears with a communication and pulse terminal part in the inside base in the electronic energy meter concerning Embodiment 1 of this invention. It is sectional drawing in the BB line of FIG. 3 which shows the electronic energy meter concerning Embodiment 1 of this invention. It is an expanded sectional view of the F section of FIG. 25 which shows the electronic energy meter concerning Embodiment 1 of this invention. It is a schematic cross section which shows the state which mounts | wears with a basic base the communication * pulse terminal part in the electronic-type energy meter concerning Embodiment 1 of this invention. It is an expanded perspective view which shows the electronic-type energy meter concerning Embodiment 2 of this invention. It is a front view which shows the inside base in the electronic energy meter concerning Embodiment 2 of this invention. FIG. 18 is a cross-sectional view corresponding to FIG. 17 showing an electronic energy meter according to Embodiment 2 of the present invention. It is an expanded sectional view of the G section of FIG. 30 which shows the electronic energy meter concerning Embodiment 2 of this invention. It is a front view equivalent to FIG. 3 which shows the electronic-type energy meter concerning Embodiment 2 of this invention. It is sectional drawing in the HH line | wire of FIG. 32 which shows the electronic energy meter concerning Embodiment 2 of this invention. It is an expanded sectional view of the I section of FIG. 33 which shows the electronic energy meter concerning Embodiment 2 of this invention.

Embodiment 1
Hereinafter, Embodiment 1 of the present invention will be described based on FIGS. 1 to 27. In the respective drawings, the same or corresponding members and portions will be described with the same reference numerals. In the first embodiment, the description will be made for high-pressure measuring instruments. That is, the communication / pulse terminal unit is mounted on the basic base.

The entire configuration will be described based on FIGS. 1 to 16. FIG. 1 is a plan view showing an electronic power meter according to Embodiment 1 of the present invention. FIG. 2 is a plan view showing the electronic energy meter according to Embodiment 1 of the present invention with the instrument cover removed. FIG. 3 is a front view of FIG. 2 showing the electronic power meter according to Embodiment 1 of the present invention. FIG. 4 is an exploded perspective view showing the electronic power meter according to Embodiment 1 of the present invention. FIG. 5 is a plan view showing a basic base in the electronic energy meter according to Embodiment 1 of the present invention. FIG. 6 is a perspective view showing a basic base in the electronic energy meter according to Embodiment 1 of the present invention. FIG. 7 is a plan view showing a communication / pulse terminal portion in the electronic energy meter according to the first embodiment of the present invention. FIG. 8 is a front view showing a communication / pulse terminal portion in the electronic energy meter according to the first embodiment of the present invention. FIG. 9 is a perspective view showing a communication / pulse terminal portion in the electronic energy meter according to the first embodiment of the present invention. FIG. 10 is an essential perspective view showing a state in which the communication / pulse terminal portion in the electronic energy meter according to Embodiment 1 of the present invention is attached to the basic base as viewed from the front. FIG. 11 is a main part perspective view showing a state in which the communication / pulse terminal portion in the electronic energy meter according to Embodiment 1 of the present invention is attached to the basic base as viewed from the rear. FIG. 12 is an overall perspective view showing a state in which the communication / pulse terminal portion in the electronic energy meter according to Embodiment 1 of the present invention is attached to the basic base. FIG. 13 is an exploded perspective view showing a state in which a middle base is attached to a basic base in the electronic energy meter according to Embodiment 1 of the present invention. FIG. 14 is a perspective view showing a middle base in the electronic energy meter according to Embodiment 1 of the present invention. FIG. 15 is a front view showing a middle base in the electronic energy meter according to Embodiment 1 of the present invention. FIG. 16 is a cross-sectional view taken along the line C-C of FIG. 14 showing the electronic energy meter according to the first embodiment of the present invention.

  The electronic watt-hour meter in this Embodiment 1 shows the case for high voltage | pressure meters, and is provided with the power supply terminal part 110 and the communication * pulse terminal part 500 which are mentioned later. As shown in FIG. 1, the middle base 200 is attached to the basic base 100, and an instrument cover 300 made of synthetic resin and a terminal cover 400 made of synthetic resin are provided.

  The basic base 100 is resin-molded of, for example, a synthetic resin, and is formed in a concave shape by the front wall portion 101, the rear wall portion 102, the first side wall portion 103, and the second side wall portion 104. As shown in FIG. 5 and FIG. 6, the power supply terminal portion 110 sharing the high-pressure instrument and low-pressure instrument common from the first side wall portion 103 of the front wall portion 101 of the basic base 100 to the central portion is integrated with the basic base 100. Plastically molded. That is, since the basic base 100 is shared and used for high pressure instruments and low pressure instruments, it is necessary to manufacture separate basic bases for high pressure instruments and basic bases for low pressure instruments, as in the prior art. It is possible to reduce the cost significantly.

  A dual use space 120 is provided between the power supply terminal side wall 111 and the second side wall 104 and the front wall 101 of the power supply terminal 110 of the basic base 100, and in the case of a high pressure instrument, communication and pulses are made in this dual use space 120. Terminal portion 500 is attached. In the case of low pressure instruments, it is a space.

  The front wall portion 101 on the shared space 120 side of the basic base 100 has a first external wire insertion port 151 for connecting to a second terminal fitting 570 of a second timed pulse terminal 510b described later, and a second service pulse described later A second external wire insertion opening 152 for connecting to the second terminal fitting 570 of the terminal 511b and a third external wire insertion opening 153 for connecting to the second terminal fitting 570 of the second communication terminal 512b described later are formed. It is done.

  As shown in FIGS. 7-9, the communication / pulse terminal unit 500 mounted as an electronic energy meter for a high-pressure meter includes a setting / memory switch 501, a number feed switch 502, a DM recovery switch 503, and an earphone jack 504. , Modular jack 505 is disposed, for example, in the right half. The first timed pulse terminal 510a, the first service pulse terminal 511a, and the first communication terminal 512a are disposed, for example, above the left half, and the second timed pulse terminal 510b, the second service pulse terminal 511b, and the second communication terminal 512b are It is located below the left half. It has a front end 515 that is flush with the entry face of the modular jack 505.

A second front surface portion 521 is formed on the first side surface 520 side of the first front surface 520 located on the entrance surface of the modular jack 505 of the communication / pulse terminal portion 500, and a second front surface portion 521 is formed. A stepped portion 530 is formed on the upper surface on the modular jack side.

  For example, a protruding fourth engaging body 540 is provided on the second front surface portion 521 of the communication / pulse terminal portion 500, and the fourth engaging body 540 is an inner surface portion of the front wall portion 101 of the basic base 100 located in the shared space 120. It is engaged with, for example, a concave first engaging body 106 provided at a position corresponding to the fourth engaging body 540.

  The fifth engaging member 541 is provided on the lower rear side of the first side surface 522 of the communication / pulse terminal unit 500, and the fifth engaging member 541 is an inner surface of the second side wall 104 of the basic base 100 located in the shared space 120. It engages with the lower surface side of the 2nd engaging body 107 as a snap fit provided above the position corresponding to the 5th engaging body 541 of a part.

  The sixth engagement body 542 is provided on the lower side of the center of the second side surface portion 523 of the communication / pulse terminal portion 500, and the sixth engagement body 542 is a side wall portion 111 of the power supply terminal portion 110 located in the shared space 120. It is engaged with the lower surface side of the third engaging body 108 as a snap fit provided on the upper side of the position corresponding to the sixth engaging body 542.

  The middle base 200 for a high-pressure gauge, which is mounted on the basic base 100 and is resin-molded of, for example, a synthetic resin, is provided with a power terminal pressing portion 201 for pressing the power terminal portion 110 of the basic base 100. A printed circuit board 250 and a metal name plate 260 are mounted on the middle base 200.

  After the communication / pulse terminal portion 500 is mounted in the combined space 120 of the basic base 100, the middle base 200 to which the printed board 250 and the metal name plate 260 are attached is fitted to the basic base 100 and mounted. Thereafter, the instrument cover 300 is attached to the basic base 100 and the terminal cover 400 is attached.

  As shown in FIGS. 14 to 16, the middle base 200 for high-pressure gauges is provided with a pressing body 210 on the front surface side on which the pressing piece 214 is brought into contact with the stepped portion 530 of the communication / pulse terminal 500. The first support piece 211 for blocking the movement of the first terminal fitting 550, described later, of the first time-limited pulse terminal 510a, and the movement of the first terminal fitting 550, described later, of the first service pulse terminal 511a are blocked on the pressing body 210. A third support piece 213 for blocking the movement of a first terminal fitting 550 described later of the second support piece 212 and the first communication terminal 512a is provided.

  Next, how to assemble the basic base 100, the communication / pulse terminal unit 500, and the middle base 200 of the electronic energy meter for high-pressure meters will be described with reference to FIGS.

  The fifth engaging body 541 and the sixth engaging body 542 of the communication / pulse terminal unit 500 are attached to the mounting of the basic terminal 100 of the communication / pulse terminal unit 500 from the second engaging body 107 and the third engaging body 108. At the rear side position, as shown by arrow P1, the first side surface 522 of the communication / pulse terminal 500 is on the second side wall 104 of the basic base 100, and the second side surface 523 of the communication / pulse terminal 500 is After the power supply terminal portion 110 is inserted toward the power supply side wall portion 111 of the power supply terminal portion 110 from the upper side to the lower side without any gap and placed at the bottom of the combined space 120, the communication / pulse terminal portion 500 is indicated by arrow P2. Slide it to the front wall 101 side.

The fifth engaging body 541 of the communication / pulse terminal portion 500 is the lower surface of the second engaging body 107 of the basic base 100 by sliding the communication / pulse terminal portion 500 along the bottom surface of the combined space 120 in the direction of arrow P2. The sixth engaging body 542 of the communication / pulse terminal 500 is engaged with the lower surface of the third engaging body 108 of the basic base 100 as a snap fit, and the sixth engaging body 542 of the communication / pulse terminal 500 is The four engaging bodies 540 are engaged with the first engaging bodies 106 of the basic base 100. By these engagement states, the communication / pulse terminal portion 500 is fixed so as not to come out of the combined space 120 of the basic base 100 without performing a tightening operation of a bolt or the like.

  As described above, after the communication / pulse terminal portion 500 is fixed to the combined space 120 of the basic base 100, as shown in FIG. 13, the middle base 200 is fitted and attached to the basic base 100. The power supply terminal pressing part 201 of the middle base 200 is disposed on the upper part of the power supply terminal part 110 of the basic base 100, and presses and fixes the power supply terminal part 110.

  The pressing piece 214 of the pressing body 210 of the middle base 200 is in pressure contact with the step portion 530 of the communication / pulse terminal portion 500, and the communication / pulse terminal portion 500 is used as the space of the basic base 100 unless the middle base 200 is removed. It can not be removed from 120.

  The first support piece 211 provided on the pressing body 210 of the middle base 200 is engaged with the rear side of the first terminal fitting 550 of the first time-limited pulse terminal 510 a to move the first terminal fitting 550 upward and backward. It is blocking. The second support piece 212 is engaged with the rear side of the first terminal fitting 550 of the first service pulse terminal 511 a to prevent the upward and backward movement of the first terminal fitting 550. The third support piece 213 is engaged with the rear side of the first terminal fitting 550 of the first communication terminal 512 a to prevent the upward and backward movement of the first terminal fitting 550.

  Next, the fitted state of the upper surface 101a of the front wall portion 101 of the basic base 100 and the communication / pulse terminal portion 500 will be described based on FIGS. FIG. 17 is a cross-sectional view taken along line AA of FIG. 2 showing the electronic power meter according to Embodiment 1 of the present invention. FIG. 18 is an enlarged cross-sectional view of a portion D of FIG. 17 showing the electronic power meter according to Embodiment 1 of the present invention. FIG. 19 is a perspective view showing a second terminal fitting in the electronic energy meter according to Embodiment 1 of the present invention. FIG. 20 is a schematic cross-sectional view showing a state in which the communication / pulse terminal portion in the electronic energy meter according to Embodiment 1 of the present invention is attached to the basic base.

  The upper surface 101a of the front wall portion 101 of the basic base 100 and the lower surface of the front end portion 500a of the communication / pulse terminal portion 500 are in contact with each other without a gap. A first external wire insertion slot 151, a second external wire insertion slot 152, and a third external wire insertion slot 153 are respectively provided in the front wall portion 101 on the shared space 120 side, and for example, FIG. The case where the 2nd terminal metal fitting 570 of the 2nd communication terminal 512b of communication / pulse terminal part 500 is arrange | positioned at the back position of the opening 153 is shown. Further, the front wall portion 101 of the basic base 100 is formed with a step portion 101 b located below the upper surface 101 a.

  The second terminal fitting 570 includes an external wire storage portion 571, a terminal screw hole 572 communicating with the external wire storage portion 571, a communication terminal screw hole 573 on the rear side of the external wire storage portion 571, and a terminal screw hole 572. And a communication terminal screw 575 screwed into the communication terminal screw hole 573. The second terminal fitting 570 is also disposed on the second time-limited pulse terminal 510 b and the second service pulse terminal 511 b of the communication / pulse terminal unit 500.

The fitting of the communication / pulse terminal portion 500 and the second terminal fitting 570 to the basic base 100 will be described based on the schematic cross-sectional view of FIG. In FIG. 20A, the communication / pulse terminal portion 500 and the second terminal fitting 570 are positioned on the rear side of the front wall portion 101 of the combined space 120 of the basic base 100. In FIG. 20 (b), the communication / pulse terminal 500 and the second terminal fitting 570 are placed from above on the bottom of the combined space 120 of the basic base 100. In FIG. 20C, the communication / pulse terminal 500 and the second terminal fitting 570 are slid to the front wall 101 side of the basic base 100 to communicate with the upper surface 101 a of the front wall 101 of the basic base 100. The lower surface of the front end portion 500 a of the terminal portion 500 is brought into contact with and fitted with substantially no gap.

  When the upper surface 101a of the front wall portion 101 of the basic base 100 and the lower surface of the front end portion 500a of the communication / pulse terminal portion 500 are brought into contact with each other without a substantial gap and fitted, foreign matter and the like will not intrude. Assuming that foreign matter or the like may intrude, as shown by the dotted line S1 in FIG. 18, the invading route is from the outside of the top surface 101a of the front wall portion 101 of the basic base 100 and the communication / pulse terminal portion 500 from the outside. It passes through between the lower surface of the front end portion 500a, and is bent from the upper surface 101a of the front wall portion 101 to the stepped portion 101b, passes through the stepped portion 101b, and abuts against the end surface to the second terminal fitting 570. Instead of the rubber packing, it is possible to prevent the intrusion of foreign matter and the like by using a complicated intrusion route.

  In the above description, although the second terminal fitting 570 in the second communication terminal 512b is described, although not shown, the same applies to the second terminal fitting 570 in the second timed pulse terminal 510b and the second service pulse terminal 511b. It is a structure and exhibits the same effect.

  Next, the fitting state of the communication / pulse terminal unit 500 and the middle base 200 will be described based on FIGS. FIG. 21 is a cross-sectional view taken along line AA of FIG. 2 showing the electronic power meter according to Embodiment 1 of the present invention. FIG. 22 is an enlarged sectional view of a portion E of FIG. 21 showing the electronic power meter according to Embodiment 1 of the present invention. FIG. 23 is a perspective view showing a first terminal fitting in the electronic energy meter according to Embodiment 1 of the present invention. FIG. 24 is a schematic cross-sectional view showing a state in which the middle base in the electronic energy meter according to the first embodiment of the present invention is attached to the communication / pulse terminal portion.

  The stepped portion 530 of the communication / pulse terminal portion 500 and the pressing piece 214 of the pressing body 210 of the middle base 200 and the third support piece 213 are in contact with each other without a substantial gap. The first terminal fitting 550 of the communication / pulse terminal unit 500 is disposed above the communication / pulse terminal unit 500. FIG. 22 shows the case of the first terminal fitting 550 disposed at the first communication terminal 512 a of the communication / pulse terminal unit 500.

  The first terminal fitting 550 is screwed into the wire housing 551, a terminal screw hole 552 communicating with the wire housing 551, a communication terminal screw hole 553 on the rear side of the wire housing 551, and the terminal screw hole 552. The communication terminal screw 555 is screwed into the communication terminal screw hole 553. A cable 560 is connected to the communication terminal screw 555. The first terminal fitting 550 is also disposed on the first time-limited pulse terminal 510a and the first service pulse terminal 511a of the communication / pulse terminal unit 500, respectively.

  The fitting of the middle base 200 to the communication / pulse terminal 500 and the second terminal fitting 570 will be described based on the schematic cross-sectional view of FIG. In FIG. 24A, the pressing body 210 of the middle base 200 is positioned above the communication / pulse terminal 500 and the first terminal fitting 550. In FIG. 24B, the pressing body 210 of the middle base 200 is located in the vicinity of the upper surface of the step portion 530 of the communication / pulse terminal portion 500 from above. In FIG. 24C, the pressing body 210 of the middle base 200 is placed on the stepped portion 530 of the communication / pulse terminal unit 500 and is slid, and the pressing piece 214 of the pressing body 210 of the middle base 200 and the third support piece Step 213 and the step portion 530 of the communication / pulse terminal portion 500 and the first terminal fitting 550 are brought into contact with each other with substantially no gap and fitted.

  The pressing piece 214, the first support piece 211, the second support piece 212, the third support piece 213 of the pressing body 210 of the middle base 200, and the step portion 530 of the communication / pulse terminal portion 500 and the first terminal fitting 550 By fitting them without contact, foreign matter and the like will not intrude. If it is assumed that foreign matter or the like may intrude, as shown by a dotted line S2 in FIG. 22, the invading route is from the upper surface of the communication / pulse terminal portion 500 to the wall surface of the step portion 530 and the pressing body of the middle base 200. It is bent to the side between the front face on the side of the pressing piece 214 on the side 210 and passes between the wall surface of the step portion 530 and the front face on the side of the pressing piece 214 of the pressing body 210 of the middle base 200. It passes between the lower surface of the pressing piece 214 and the upper surface of the stepped portion 530, passes through the upper surface of the stepped portion 530, and is bent to the side between the first terminal fitting 550 and the third support piece 213. And the third support piece 213 and pass through to the lower end side of the third support piece 213, and it is not a single intrusion path but a complicated intrusion path, so that foreign matter etc. does not enter without rubber packing. To prevent Kill.

  In the above description, although the first terminal fitting 550 for the first communication terminal 512a has been described, although not shown, the same applies to the first terminal fitting 550 for the first time-limited pulse terminal 510a and the first service pulse terminal 511a. It is a structure and exhibits the same effect.

  Next, the fitting state of the communication / pulse terminal 500 and the front wall 101 and the second side wall 104 of the basic base 100 will be described with reference to FIGS. FIG. 25 is a cross-sectional view taken along the line B-B of FIG. 3 showing the electronic energy meter according to the first embodiment of the present invention. FIG. 26 is an enlarged cross-sectional view of a portion F of FIG. 25 showing the electronic energy meter according to Embodiment 1 of the present invention. FIG. 27 is a schematic cross-sectional view showing a state in which the communication / pulse terminal portion in the electronic energy meter according to Embodiment 1 of the present invention is attached to the basic base.

  As shown in FIG. 26, on the front wall portion 101 of the basic base 100, a protrusion projecting to the back side in a portion fitted in contact with the first front surface portion 520 of the modular jack 505 of the communication / pulse terminal portion 500. And an engaging body 590 having an engaging recess 591 fitted in contact with the protrusion 130 of the front wall 101 on the first front surface 520 of the modular jack 505, A first contact body 592 fitted in contact with the inner surface of the wall portion 101 is provided, connected to the first contact body 592 and fitted in contact with the inner surface of the second side wall portion 104 of the basic base 100 A second contact 593 is provided. The second side surface portion 523 of the communication / pulse terminal portion 500 is in contact with and fitted to the power terminal sidewall portion 111 of the power terminal portion 110 of the basic base 100 with substantially no gap.

  The fitting of the communication / pulse terminal portion 500 with the front wall portion 101 and the second side wall portion 104 of the basic base 100 will be described based on the schematic cross-sectional view of FIG. In FIG. 27A, the communication / pulse terminal portion 500 is positioned on the rear side of the front wall portion 101 of the combined space 120 of the basic base 100. In FIG. 27B, the engaging recess 591 of the engaging member 590 of the communication / pulse terminal portion 500 is slid to engage with the protrusion 130 of the basic base 100. In FIG. 27C, the communication / pulse terminal portion 500 is further slid, and the engaging recess 591 of the engaging member 590 is completely engaged with the protrusion 130 of the basic base 100. The first front surface 520 of the modular jack 505 and the front wall 101 of the basic base 100 are disposed on the same plane.

  The wall surface of the protrusion 130 of the front wall portion 101 of the basic base 100 and the inner surface of the engagement recess 591 of the communication / engagement body 590 of the communication / pulse terminal portion 500, the inner surface of the front wall portion 101 of the basic base 100 and the communication / pulse terminal portion 500 The front surface of the first contact body 592, the inner surface of the second side wall portion 104 of the basic base 100, and the side surface of the second contact body 593 are brought into contact with each other substantially without a gap and fitted.

  Thus, the wall surface of the protrusion 130 of the front wall portion 101 of the basic base 100 communicates with the inner surface of the engagement recess 591 of the engaging member 590 of the pulse terminal portion 500 and the inner surface of the front wall portion 101 of the basic base 100 The foreign matter etc. is made contact by bringing the front surface of the first contact body 592 of the pulse terminal portion 500, the inner surface of the second side wall portion 104 of the basic base 100, and the side surface of the second contact body 593 into contact with substantially no gap. There is no intrusion. If it is assumed that foreign matter or the like may invade, as shown by dotted line S3 in FIG. 26, the intrusion path is from the outside to the front wall portion 101 of the basic base 100 and the modular jack 505 of the communication / pulse terminal portion 500. Between the left inner surface of the engaging recess 591 of the engaging member 590 and the left wall surface of the protrusion 130 through the gap between the first front surface 520 of the engaging member 590 and the recess bottom surface of the engaging recess 591 of the engaging member 590 and the protrusion It bends to the side of the projection wall of 130 and passes between the bottom of the recess of engagement recess 591 of engagement body 590 and the projection wall of projection 130, and the right inner surface of engagement recess 591 of engagement body 590 and projection It bends between the right side wall surface of 130 and passes between the right side inner surface of the engaging recess 591 of the engaging body 590 and the right side wall surface of the protrusion 130, and the front side of the first contact body 592 and the inner surface of the front wall portion 101 Turn to the side between and the first The contact body 592 is bent between the front surface of the contact body 592 and the inner surface of the front wall portion 101 and between the side surface of the second contact 593 and the inner surface of the second side wall portion 104. The passage between the inner surface of the two side wall portion 104 and the tip side of the second contact 593 is not a single penetration route but a complicated penetration route instead of a single penetration route, so that foreign matter etc. Can be prevented.

Second Embodiment
Second Embodiment A second embodiment of the present invention will be described based on FIGS. 28 to 34. In the respective drawings, the same or corresponding members and portions will be described with the same reference numerals.

  FIG. 28 is an exploded perspective view showing the electronic power meter according to Embodiment 2 of the present invention. FIG. 29 is a front view showing a middle base in the electronic energy meter according to Embodiment 2 of the present invention. FIG. 30 is a cross-sectional view corresponding to FIG. 17 showing an electronic energy meter according to Embodiment 2 of the present invention. FIG. 31 is an enlarged cross-sectional view of a portion G of FIG. 30 showing the electronic energy meter according to Embodiment 2 of the present invention. FIG. 32 is a front view corresponding to FIG. 3 showing an electronic energy meter according to Embodiment 2 of the present invention. FIG. 33 is a cross-sectional view taken along the line HH of FIG. 32, showing the electronic energy meter according to Embodiment 2 of the present invention. FIG. 34 is an enlarged cross-sectional view of a portion I of FIG. 33 showing an electronic energy meter according to Embodiment 2 of the present invention.

  The second embodiment shows the case of the electronic power meter for low pressure meter, and the communication / pulse terminal unit 500 such as the electronic power meter for high voltage meter of the first embodiment described above. Is unnecessary.

  The same basic base 100 as that for the high pressure gauge of the first embodiment described above is used also for the low pressure gauge. That is, since the basic base 100 is shared and used for high pressure instruments and low pressure instruments, it is necessary to manufacture separate basic bases for high pressure instruments and basic bases for low pressure instruments, as in the prior art. It is possible to reduce the cost significantly.

  In the case of low-pressure instruments, since the communication / pulse terminal portion 500 is unnecessary, the combined space 120 becomes a space, and the combined space 120 of the basic base 100 and the first external wire insertion port 151 of the front wall portion 101, the second external wire The insertion port 152 and the third external wire insertion port 153 are closed by the middle base 600.

The middle base 600 for a low-pressure instrument, which is mounted on the basic base 100 and is resin-molded with a synthetic resin, for example, is provided with a power terminal pressing portion 602 for pressing the power terminal portion 110 of the basic base 100 on the support 601. A printed circuit board 650 and a resin name plate 660 are attached to the middle base 600, and an instrument cover 700 is attached.

  A closing member 610 for closing the first external wire insertion port 151, the second external wire insertion port 152, and the third external wire insertion port 153 of the dual-use space 120 and the front wall portion 101 on the dual-use space 120 side of the middle base 600. Is provided.

  In the closing body 610, a first closing piece 611 which contacts the end face of the first external wire insertion port 151 of the front wall portion 101 and closes the first external wire insertion port 151, and a second external wire insertion port 152 The second closing piece 612 which contacts the end face and closes the second external wire insertion opening 152, and the third closing piece which contacts the end surface of the third external wire insertion opening 153 and closes the third external wire insertion opening 153 613 are provided.

  Next, the closed state of the upper surface 101a of the front wall portion 101 of the basic base 100 and the closed body 610 of the middle base 600 will be described. The upper surface 101 a of the front wall portion 101 of the basic base 100 and the lower surface 610 b of the front end portion 610 a of the closing body 610 are in contact with each other without a gap.

  The first external wire insertion opening 151 is closed by the first closing piece 611 of the closing body 610, and the second external wire insertion opening 152 is closed by the second closing piece 612, and the third external wire insertion opening by the third closing piece 613. 153 is blocked.

  The first closing piece 611 has a first engaging piece 611 a engaged with the lower side of the first external wire insertion opening 151, and the second closing piece 612 engages with the lower side of the second external wire insertion opening 152. The third closing piece 613 has a third engaging piece 613 a that engages with the lower side of the third external wire insertion opening 153.

  FIG. 31 shows the closed state of the third external wire insertion port 153, the third external wire insertion port 153 is closed by the third closing piece 613, and the third engagement piece 613 a is the third external wire insertion port 153. The lower side is engaged to prevent the closure body 610 from coming off. Although not shown, the first outer wire insertion opening 151 and the second outer wire insertion opening 152 are similarly closed by the first closing piece 611 and the second closing piece 612.

  When the upper surface 101a of the front wall portion 101 of the basic base 100 and the lower surface 610b of the front end portion 610a of the closing body 610 are brought into contact with each other with no substantial gap and fitted, foreign matter and the like will not intrude. If it is assumed that foreign matter or the like may intrude, it will be described based on FIG. 31, but the invading route is from the outside of the top surface 101a of the front wall 101 of the basic base 100 and the front end 610a of the closure 610 from the outside. It passes between the lower surface 610b and bends from the upper surface 101a of the front wall 101 to the step 101b, passes through the step 101b and abuts against the third closing piece 613, and the end face of the third outer wire insertion port 153 and the third It bends to the lower side of the closing piece 613 and passes between the end face of the third outer wire insertion port 153 and the third closing piece 613 to be a path for coming out to the third outer wire insertion slot 153.

  Further, foreign matter or the like does not intrude by bringing the end face of the third external wire insertion opening 153 into contact with the third closing piece 613 of the closing body 610 with almost no gap. If it is assumed that foreign matter or the like may intrude, this will be described based on FIG. 31. However, the end face of the third outer wire insertion slot 153 and the third closing piece through the third outer wire insertion slot 153 from the outside 613, and is bent below the third engagement piece 613a of the third closing piece 613 and the third external wire insertion slot 153, and is below the third engagement piece 613a and the third external wire insertion slot 153. And bend to the lower side of the front surface of the third engagement piece 613a, pass through the front surface of the third engagement piece 613a, and the bottom surface of the combined space 120 of the third engagement piece 613a and the basic base 100 Between the third engagement piece 613 a and the bottom surface of the combined space 120 of the basic base 100.

  As described above, since the route through which the foreign matter and the like invade is not a single intrusion path but a complicated intrusion path, it is possible to prevent the intrusion of the foreign matter and the like without the rubber packing. Although the penetration path between the third external wire insertion opening 153 and the third closing piece 613 of the closing body 610 has been described, although not shown, the first outer wire insertion opening 151 and the first closing piece 611 of the closing body 610 The same route of entry is also obtained for the route of entry and the route of entry between the second external wire insertion opening 152 and the second closing piece 612 of the closing body 610, and the same effect is exerted.

  Next, the fitting state of the closing body 610 of the middle base 600 and the front wall portion 101 and the second side wall portion 104 of the basic base 100 will be described. The lower surface 610 b of the front end portion 610 a of the closing body 610 is in contact with and fitted on the upper surface 101 a of the front wall portion 101 of the basic base 100 with substantially no gap. The first closing piece 614 of the closing body 610 is in contact with and fitted to the power supply terminal side wall portion 111 of the power supply terminal portion 110 of the basic base 100 substantially without a gap.

  As shown in FIG. 34, the second closing piece 615 of the closing body 610 is in contact with and fitted to the protrusion 130 of the front wall portion 101 of the basic base 100 with substantially no gap. A third closing piece 616 provided in connection with the second closing piece 615 is fitted in contact with the second side wall portion 104 of the basic base 100 with substantially no gap.

  As described above, the wall surface of the second closing piece 615 of the closing body 610, the wall surface of the protrusion 130 of the front wall portion 101 of the basic base 100, the third closing piece 616 and the inner surface of the second side wall portion 104 of the basic base 100 By bringing the components into contact without any gap, foreign matter and the like will not intrude. If it is assumed that foreign matter or the like may intrude, the intrusion path is from the outside between the front wall portion 101 of the basic base 100 and the front end portion 610a of the closing body 610 from the outside. And the upper surface side of the protrusion 130 and passes through the upper surface of the protrusion 130 and abuts against the inner surface of the second side wall portion 104 of the basic base 100, and then the third closure piece 616 and the basic base 100. The passage between the inner wall of the second side wall portion 104 and the inner side of the second side wall portion 104 is not a single intrusion route but is a complicated intrusion route instead of a single intrusion route, so that foreign matter can be prevented from entering without rubber packing. .

  In the present invention, within the scope of the invention, each embodiment can be freely combined, or each embodiment can be appropriately modified or omitted.

  The present invention is suitable for the realization of an electronic watt-hour meter capable of realizing sharing between high-pressure and low-pressure meters.

DESCRIPTION OF SYMBOLS 100 Basic base, 101 front wall part, 101a upper surface, 101b level difference part, 102 rear wall part, 103 1st side wall part, 104 2nd side wall part, 106 1st engaging body, 107 2nd engaging body, 108 3rd engaging body , 110 power supply terminal portion, 111 power supply terminal side wall portion, 120 combined space, 130 protrusion, 151 first external wire insertion slot, 152 second external wire insertion slot, 153 third external wire insertion slot, 200 middle base, 201 power supply Terminal pressing portion, 210 pressing body, 211 first supporting piece, 212 second supporting piece, 213 third supporting piece, 214 pressing piece, 300 instrument cover, 400 terminal cover, 500 communication / pulse terminal portion, 501 setting / memory switch , 502 digit switch, 503 DM recovery switch, 504 earphone jack, 505 modular jack, 510a first timed pulse Terminal, 510b Second timed pulse terminal, 511a first service pulse terminal, 511b second service pulse terminal, 512a first communication terminal, 512b second communication terminal, 515 front end portion, 520 first front portion, 521 second front portion , 522 first side portion, 523 second side portion, 530 step portion, 540 fourth engaging body, 541 fifth engaging body, 542 sixth engaging body, 550 first terminal fitting, 552 terminal screw hole, 554 first communication Terminal screw, 570 second terminal fitting, 572 terminal screw hole, 574 second communication terminal screw, 590 engagement body, 591 engagement recess, 592 first contact body, 593 second contact body, 600 middle base, 602 power terminal presser , 610 pressing body, 610a front end, 611 first support piece, 611a first engagement piece, 612 second support piece, 612a second engagement piece, 613 third support Piece, 613a third engagement piece 614 first closing side piece, 615 second closure side strip 616 third closing side piece

Claims (10)

  A basic base formed in a concave shape by a front wall portion, a rear wall portion, a first side wall portion, and a second side wall portion, and arranged from the first side wall portion to a central portion on the front wall portion side of the basic base; A power terminal portion integrally formed with the basic base, a common space located between the power terminal side wall portion of the power terminal portion, the front wall portion and the second side wall portion, and the basic base And a second engaging member provided on the inner surface of the second side wall portion of the basic base which is provided with a first engaging body on the inner surface of the front wall portion of the basic base and which is located in the combined space. And the third engaging member is provided on the side wall portion of the power terminal of the power terminal portion, and the middle base is provided with a power terminal pressing portion for pressing the power terminal portion. Total.   A communication / pulse terminal unit having a setting / memory switch, a digit feed switch, a DM return switch, an earphone jack, a modular jack, a timed pulse terminal, a service pulse terminal, and a communication terminal is disposed in the shared space. A fourth engaging body engaged with the first engaging body is provided on a front face portion of the second engaging body, and is engaged with the first side surface portion of the communication / pulse terminal portion by sliding to the lower side of the second engaging body A fifth engaging body is provided, and a sixth engaging body is provided on the second side surface portion of the communication / pulse terminal portion to be slid and engaged with the lower side of the third engaging body. The electronic energy meter according to claim 1.   The first engaging body is concave and the fourth engaging body is projecting, and the second engaging body and the fifth engaging body and the third engaging body and the sixth engaging body are in a snap fit engagement. The electronic energy meter according to claim 2, characterized in that   A stepped portion is provided on the upper surface on the rear side of the communication / pulse terminal portion, a pressing body is provided on the middle base in contact with the stepped portion, and the pressing body supports the terminal fitting of the communication / pulse terminal portion The electronic power meter according to claim 2 or 3, wherein a supporting piece is provided.   The lower surface of the front end portion of the communication / pulse terminal portion is in contact with the upper surface of the front wall portion of the basic base, and a stepped portion is provided below the upper surface of the front wall portion. The electronic power meter according to any one of claims 1 to 4.   The said pressing body of the said inside base is contacted to the level | step-difference part of the said communication * pulse terminal part, The said supporting piece provided in the said pressing body was contacted to the said terminal metal fitting. Electronic energy meter.   A protrusion is provided on the front wall of the basic base at a portion fitted in contact with the first front face of the communication / pulse terminal, and the first front face of the communication / pulse terminal is provided with the projection. There is provided an engaging body having an engaging recess which is fitted in contact with the protrusion, and a contact body is provided which is contiguous with the engaging body and fitted in contact with the inner surface of the second side wall portion of the basic base. The electronic power meter according to any one of claims 2 to 6, which is characterized in that.   The middle base is provided with a closing body for closing the combined space of the basic base and the front wall, and a closing piece is provided for closing the external wire insertion opening provided in the front wall. The electronic energy meter according to claim 1.   The lower surface of the front end of the closing body is in contact with the upper surface of the front wall of the basic base, and a step is provided below the upper surface of the front wall, and the closing piece of the closing body is the external wire The outer wire insertion hole is closed by contacting an end face of the insertion hole, and the engagement piece of the closing piece is engaged with the lower side of the outer wire insertion hole. Electronic energy meter.   A protrusion is provided on the front wall of the basic base at a portion fitted in contact with the front end of the closing body of the middle base, and the power supply of the power supply terminal of the closing body of the middle base is provided A first closing side piece that contacts and fits to the terminal side wall portion is provided, and a second closing side piece that contacts and fits to the protrusion is provided to the closing body, and the second closing side piece is continued to the second closing side piece The electronic power meter according to claim 8 or 9, further comprising: a third closing side piece that is provided and fitted in contact with the inner surface of the second side wall portion of the basic base. .

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