JP7634433B2 - Power meter - Google Patents

Description

The present invention relates to a watt-hour meter.

Conventionally, a watt-hour meter has a metering device, a communication device that is attached to the metering device and transmits the amount of electricity measured by the metering device to the outside, a terminal block, and a cover. Figures 15(a) to 15(d) are process diagrams showing the procedure for assembling the metering device, the terminal block, the communication device, and the cover in a conventional watt-hour meter. Figure 15(a) shows the direction in which the metering device is attached to the terminal block, Figure 15(b) shows the state in which the terminal block is attached to the metering device, Figure 15(c) shows the state in which the communication device is attached to the metering device, and Figure 15(d) shows the completed watt-hour meter with the cover attached to the terminal block. Figures 16(a) and (b) show exploded views of a conventional watt-hour meter. Figure 17(a) shows the appearance of a conventional communication device for a watt-hour meter, and Figure 17(b) shows the metering device attachment part 24a provided on the communication device.

As shown in Figs. 16(a) and 16(b), the measuring device is composed of a circuit section 1 having a display section 1a that displays the amount of power, a communication device connection section 1b, an open/close detection section 1c, a conductor connection section 1d, a sensor connection section 1e, and a base attachment section 1f, a sensor section 2 that has a sensor side circuit connection section 2a that connects to the sensor connection section 1e of the circuit section 1 and measures the current, a conductor 3 that has a conductor side circuit connection section 3a that connects to the conductor connection section 1d of the circuit section 1 to supply power and a conductor side terminal connection section 3b that connects to the terminal side conductor connection section 9b of the terminal 9 of the terminal block, a base 4 that has a communication device connection section through hole 4a, a communication device attachment section 4b, a block attachment section 4c, an open/close detection section through hole 4d, a case attachment section 4e, a conductor through hole 4f, and a circuit attachment section 4g, and a case 5 that houses them and has a display window 5a, a case side base attachment section 5b, a case waterproof rib storage section 5c, a case waterproof rib 5d, and a case side fixing screw attachment section 5e.

As shown in Fig. 17(a)-17(b), the communication device has a metering device connection part 21a and a metering device mounting part 24a. As shown in Fig. 16(a)-16(b), the terminal block is composed of a block mounting screw 6, a conductor connection screw 7, an electric wire mounting screw 8, a terminal 9 having an electric wire storage part 9a and a terminal side conductor connection part 9b, and a block 10 having a block side base mounting part 10a, a cover mounting female screw part 10b, an electric wire through hole 10c, a terminal mounting part 10d, a block side fixing screw mounting part 10e, and a block waterproof rib storage part 10f. As shown in Fig. 16(a)-16(b), the cover is composed of a cover 11 having a detection protrusion 11a and a cover waterproof rib 11b, and a cover mounting screw 12.

The procedure for assembling the metering device, communication device, terminal block, and cover configured in this way to the electricity meter is as follows. First, as shown in FIG. 15(a), the metering device is placed above the terminal block and moved downward. Then, as shown in FIG. 15(b), the metering device is mated with the terminal block. Then, the conductor side terminal connection portion 3b of the metering device is fixed to the terminal side conductor connection portion 9b of the terminal 9 with the conductor connection screw 7 of the terminal block, and the block mounting portion 4c of the metering device is fixed to the block side base mounting portion 10a of the terminal block with the block mounting screw 6, thereby attaching the metering device to the terminal block.

At this time, the case waterproof rib 5d of the case 5 is stored in the block waterproof rib storage portion 10f of the block 10. Then, as shown in FIG. 15(c), the weighing device mounting portion 24a of the communication device is fitted into the communication device mounting portion 4b of the weighing device base 4, and the weighing device connection portion 21a of the communication device is connected to the communication device connection portion 1b of the circuit portion 1 through the communication device connection portion through hole 4a of the weighing device base 4, thereby attaching the communication device to the weighing device.

After that, as shown in Fig. 15(d), the cover waterproof rib of the cover 11 is inserted into the case waterproof rib storage portion 5c of the case 5, and the cover mounting screw 12 provided on the cover 11 is attached to the cover mounting female screw portion 10b of the block 10, thereby assembling the watthour meter. When replacing the metering device by reusing the installed terminal block, first, the cover mounting screw 12 is loosened from the old watthour meter and the new watthour meter, the cover 11 is removed, and the old watthour meter is transported to a nearby location for storage, the metering device mounting portion 24a is removed from the communication device connection portion 1b, the communication device is removed, the new watthour meter is transported to a nearby location for storage, and the block mounting screw 6 and conductor connection screw 7 of the terminal block are loosened, the metering device is removed, and the new watthour meter is transported to a nearby location for storage. Next, the new watthour meter, the new communication device, and the new cover are attached to the old terminal block, completing the replacement of the watthour meter. Thus, when replacing the electricity meter, the cover needs to be loosened twice when removing it and tightened once when attaching it.

For reference, there is a power meter that does not require the removal of the power supply conductors and load supply conductors connected to the terminal block, and allows the power supply control device to be easily and safely attached and detached.

Patent No. 4991340

When replacing a power meter, the cover mounting screws had to be loosened and then tightened, which lengthened the work time and increased the labor costs.

The present invention provides a watt-hour meter that can reduce the time required to attach the watt-hour meter cover and cut installation costs.

In order to solve the above problem, claim 1 of the present invention provides a measuring device having a case and a base, a communication device attached to the measuring device and transmitting the amount of electric power measured by the measuring device to the outside, a terminal block attached to the measuring device and connected to an electric wire, and a cover covering the measuring device, the communication device and the terminal block and having a slide portion, the case is provided with a case waterproof rib storage portion, the base is provided with a rib mounting recess, the cover is provided with a mounting rib that fits into the rib mounting recess, a cover side sliding portion, and a cover side sliding and fixing portion of a snap-fit structure having a fixing protrusion, the slide portion is provided with a waterproof rib, a slide side sliding portion, and a slide side upper portion. The cover is characterized in that it has a sliding and fixing part, a lower sliding and fixing part on the slide side, and a recess, and the sliding part on the cover side is fitted to the sliding part to allow the sliding part to slide up and down, and when the fixing protrusion is fitted to the upper sliding and fixing part on the slide side, the mounting rib is inserted into the rib mounting recess, and then the recess on the slide part is pushed upward with a finger, so that the upper sliding and fixing part pushes the fixing protrusion, bending the cover side sliding and fixing part, and the fixing protrusion is released from the upper sliding and fixing part on the slide side, and the fixing protrusion is fitted to the lower sliding and fixing part on the slide side, and at the same time, the waterproof rib is inserted into the case waterproof rib storage part to attach the cover.

The invention of claim 2 comprises a metering device having a case, a base, and a slide section, a communication device attached to the metering device and transmitting the amount of electricity measured by the metering device to the outside, a terminal block attached to the metering device and connected to an electric wire, and a cover covering the metering device, the communication device, and the terminal block, the case being provided with a case waterproof rib storage section, a case side sliding section, a case side upper sliding and fixing section, and a case side lower sliding and fixing section, the base being provided with a rib mounting recess and a deformation recess, the slide section being provided with a waterproof rib, a slide side sliding section, a slide side sliding and fixing section having a snap-fit structure with a fixing protrusion, and a recess, and the cover being provided with an attachment section. The cover is attached by providing an attachment rib and a fixing recess, engaging the slide side sliding part with the case side sliding part to allow the slide part to slide up and down, and inserting the attachment rib into the rib attachment recess with the fixing protrusion engaged with the case side upper sliding fixed part, and then pressing the recess of the slide part downward with a finger, so that the fixing protrusion is pressed against the case side upper sliding fixed part, bending the slide side sliding fixed part towards the deformation recess, the fixing protrusion comes off the case side upper sliding fixed part, and the fixing protrusion engages with the case side lower sliding fixed part, and at the same time, the waterproof rib engages with the fixing recess, thereby attaching the cover.

The invention of claim 3 comprises a metering device having a case and a base, a communication device attached to the metering device and transmitting the amount of electric power measured by the metering device to the outside, a terminal block attached to the metering device and connected to an electric wire, and a cover covering the metering device, the communication device and the terminal block and having a slide section and a spring, the case is provided with a case waterproof rib storage section, the base is provided with a rib mounting recess, the cover is provided with a mounting rib that fits into the rib mounting recess, a cover side sliding section and a spring recess for inserting the spring, the slide section is provided with a waterproof rib, a slide side sliding section and a spring recess for inserting the spring. The cover is attached by providing a spring abutment portion, a spring abutment portion that abuts against the spring, and a recess, and the slide side sliding portion is fitted to the cover side sliding portion to allow the slide portion to slide up and down, and by pressing the recess of the slide portion downward with a finger, the spring abutment portion bends the spring, and the top surface of the waterproof rib becomes flush with the top surface of the mounting rib, and after the mounting rib is inserted into the rib mounting recess, the finger is released from the recess of the slide portion, and the slide portion is pushed up by the restoring force of the spring, and the waterproof rib is inserted into the case waterproof rib storage portion, thereby attaching the cover.

The invention of claim 4 comprises a metering device having a case, a base, a slide portion, and a spring, a communication device attached to the metering device and transmitting the amount of electricity measured by the metering device to the outside, a terminal block attached to the metering device and connected to an electric wire, and a cover that covers the metering device, the communication device, and the terminal block, the case being provided with a case waterproof rib storage section, a case side sliding section, and a spring recess for inserting the spring, the base being provided with a rib mounting recess, the sliding section being provided with a waterproof rib, a slide side sliding section, The cover is provided with a spring contact portion and an open contact surface that contacts the spring, an attachment rib and a fixing recess, the slide side sliding portion is engaged with the case side sliding portion to allow the slide portion to slide up and down, and the spring contact portion bends the spring by pushing the open contact surface upward with the upper surface of the attachment rib, and at the same time that the attachment rib is inserted into the rib attachment recess, the slide portion is pushed down by the restoring force of the spring, and the waterproof rib engages with the fixing recess, thereby attaching the cover.

The invention of claim 5 is characterized in that a seal mounting part is provided on the cover, a seal part is attached to the seal mounting part, a seal sliding recess and a sealing recess are provided on the slide part, the slide part is slid to the lower end to store the seal part in the slide side sliding part, the mounting rib is inserted into the rib mounting recess, and then the slide part is pushed up, so that the waterproof rib is inserted into the case waterproof rib storage part, and at the same time, the sealing part passes through the seal sliding recess and appears in the sealing recess, a sealing cap is attached to the sealing part, and the sealing cap is fitted into the sealing recess to fix and seal the slide part.

The invention of claim 6 is characterized in that a seal mounting part is provided on the cover, a seal part is attached to the seal mounting part, a sealing recess is provided on the slide part, and while the slide part is slid to the upper end, the mounting rib is inserted into the rib mounting recess, and then the slide part is pressed down, so that the waterproof rib fits into the fixing recess, and at the same time, the upper and lower ends of the seal mounting part match the upper and lower ends of the sealing recess, respectively, and the sealing cap is attached to the sealing part, so that the sealing cap fits into the seal mounting part and the sealing recess, and the slide part is fixed and sealed.

According to the inventions of claims 1 and 2, the cover can be attached and removed by sliding the slide part, which reduces the work time compared to the current product.

According to the inventions of claims 3 and 4, compared to the sliding part of claims 1 and 2, which is slid with a finger, the closed state is always maintained by the spring, so it is possible to prevent forgetting to close it.

According to the inventions of claims 5 and 6, the item can be sealed, preventing tampering.

1 is an assembled perspective view of a watt-hour meter according to a first embodiment of the present invention; 1 is an assembly cross-sectional view and a partial cross-sectional view of a watt-hour meter according to a first embodiment of the present invention; 1 is a perspective view of a base, a cover, and a sliding portion of an electricity meter according to a first embodiment of the present invention. FIG. 11 is an assembled perspective view of a watt-hour meter according to a second embodiment of the present invention. 5A and 5B are an assembly cross-sectional view and a partial cross-sectional view of a watt-hour meter according to a second embodiment of the present invention. FIG. 11 is a perspective view of a case, a base, a cover, and a sliding portion of an electricity meter according to a second embodiment of the present invention. 13A and 13B are a perspective view and a partial cross-sectional view of a cover of a watt-hour meter according to a third embodiment of the present invention; FIG. 11 is a perspective view of a cover and a sliding portion of an electricity meter according to a third embodiment of the present invention. 13 is an assembly perspective view and a partial cross-sectional view of a watt-hour meter according to a fourth embodiment of the present invention. FIG. FIG. 13 is a perspective view of a case and a sliding portion of an electricity meter according to a fourth embodiment of the present invention. 13 is an assembly perspective view and a partial cross-sectional view of a watt-hour meter according to a fifth embodiment of the present invention. FIG. 13A and 13B are a perspective view and a partial cross-sectional view of a cover and a sliding portion of an electricity meter according to a fifth embodiment of the present invention. 13 is an assembly perspective view and a partial cross-sectional view of a watt-hour meter according to a sixth embodiment of the present invention. FIG. 13A and 13B are a perspective view and a partial cross-sectional view of a cover and a sliding portion of an electricity meter according to a sixth embodiment of the present invention. FIG. 1 is a perspective view of a conventional watt-hour meter. FIG. 1 is an exploded view of a conventional watt-hour meter. FIG. 1 is a perspective view of a conventional communication device for an electricity meter.

The following describes in detail the electricity meter according to an embodiment of the present invention with reference to the drawings.

(First embodiment)
Fig. 1 is an assembled perspective view of a watt-hour meter according to a first embodiment of the present invention. Fig. 1(a) shows the direction in which a cover having a sliding part fixed to the lower end is attached to the metering device, Fig. 1(b) shows the state in which the cover is attached to the metering device, and Fig. 1(c) shows the watt-hour meter assembled by sliding the sliding part upward.

Figure 2 shows an assembled cross-sectional view and a partial cross-sectional view of the watt-hour meter according to the first embodiment of the present invention. Figure 2(a) is a vertical cross-sectional view of the watt-hour meter shown in Figure 1(b). Figure 2(b) is a vertical cross-sectional view of the watt-hour meter shown in Figure 1(c). Figure 2(c) is a horizontal cross-sectional view of the right side of the watt-hour meter shown in Figure 2(a). Figure 2(e) is a horizontal cross-sectional view of the right side of the watt-hour meter shown in Figure 2(b). Figure 2(d) is a horizontal cross-sectional view of the right side showing the process from Figure 2(c) to Figure 2(e) and showing how the cover-side sliding fixing part bends.

Figure 3 is a perspective view of the base, cover, and slide of the electricity meter according to the first embodiment of the present invention. Figure 3(a) shows a perspective view of the base, Figures 3(b) and (c) show perspective views of the cover, and Figures 3(d) and (e) show perspective views of the slide.

The electricity meter has a metering device with a case 5 and a base 4A, a communication device (upper case 23 and lower case 24 shown in FIG. 1(a)) that is attached to the metering device and transmits the amount of electricity measured by the metering device to the outside, a terminal block that is attached to the metering device and connects to an electric wire, and a cover 11A that covers the metering device, communication device, and terminal block and has a sliding portion 101.

As shown in FIG. 16(a), the case 5 has a waterproof rib storage section 5c on the front side and both left and right side sides inside the lower opening.

As shown in FIG. 3(a), the base 4A has rib mounting recesses 4A1 on the front and on the outer left and right sides.

As shown in Figures 3(b) and 3(c), the cover 11A has mounting ribs 11A1 on the back surface and on the inside of both left and right sides of the upper part so as to fit into the rib mounting recesses 4A1 of the base 4A, cover side sliding parts 11A2 on the front surface and on the outside of both left and right sides, and cover side sliding fixing parts 11A4 with a snap-fit structure having fixing protrusions 11A3 on both left and right sides.

As shown in Figures 3(d) and 3(e), the sliding part 101 has waterproof ribs 101a on the front and both left and right sides of the upper part that can be stored in the case waterproof rib storage part 5c of the case 5, sliding side sliding parts 101b provided on the back and the inside of both left and right sides to fit into the cover side sliding part 11A2 of the cover 11A to slide the sliding part 101 up and down, sliding side upper sliding fixing part 101c and sliding side lower sliding fixing part 101d provided on the inside of both left and right sides to fit into the fixing convex part 11A3 of the cover side sliding fixing part 11A4 of the cover 11A to fix the sliding part 101, and recessed parts 101e provided on the outside of both left and right sides to slide the sliding part 101 up and down with a finger.

Next, the procedure for assembling the cover and slide part of the first embodiment thus configured will be described. First, the cover side sliding part 11A2 of the cover 11A shown in FIG. 3(b) is mated with the slide side sliding part 101b of the slide part 101 shown in FIG. 3(d) to assemble the slide part 101 to the cover 11A and make the slide part 101 slidable up and down.

Next, the fixing protrusions 11A3 of the cover side sliding fixing part 11A4 provided on both the left and right side surfaces of the cover 11A shown in FIG. 3(b) are engaged with the slide side upper sliding fixing part 101c provided on the inside of both the left and right side surfaces of the slide part 101 shown in FIG. 3(e) to fix the slide part 101 to the lower end, so that the upper surface of the waterproof rib 101a of the slide part 101 and the upper surface of the mounting rib 11A1 of the cover 11A are flush with each other.

Next, we will explain the procedure for attaching the cover to the metering device and assembling it into a watt-hour meter after assembling the metering device, communication device, and terminal block. First, as shown in Figures 1(a) to 1(b), 2(a), and 2(c), insert the mounting rib 11A1 of the cover 11A into the rib mounting recess 4A1 of the base 4A.

Next, as shown in FIG. 2(d), when the recess 101e of the slide portion 101 is pushed upward with a finger, the slide-side upper sliding and fixing portion 101c pushes the fixing protrusion 11A3, causing the cover-side sliding and fixing portion 11A4 to bend inward, and the fixing protrusion 11A3 of the cover-side sliding and fixing portion 11A4 of the cover 11A to come off from the slide-side upper sliding and fixing portion 101c of the slide portion 101.

Furthermore, when the recess 101e of the slide portion 101 is pushed upward with a finger, as shown in Figures 1(c), 2(b), and 2(e), the fixing protrusion 11A3 of the cover side sliding fixing portion 11A4 of the cover 11A engages with the slide side lower sliding fixing portion 101d of the slide portion 101, and at the same time, the waterproof rib 101a of the slide portion 101 is inserted into the case waterproof rib storage portion 5c of the case 5, allowing the cover 11A to be attached and assembled into the watt-hour meter.

When removing the cover 11A, pressing the recess 101e of the slide part 101 downward with a finger causes the slide side lower sliding and fixing part 101d to press the fixing protrusion 11A3, causing the cover side sliding and fixing part 11A4 to bend inward, and the fixing protrusion 11A3 of the cover side sliding and fixing part 11A4 of the cover 11A to come off the slide side lower sliding and fixing part 101d of the slide part 101, and the fixing protrusion 11A3 of the cover side sliding and fixing part 11A4 of the cover 11A to engage with the slide side upper sliding and fixing part 101c of the slide part 101, fixing the slide part 101 to the lower end, and the top surface of the mounting rib 11A1 of the cover 11A and the top surface of the waterproof rib 101a of the slide part 101 are flush with each other, and the cover 11A can be removed.

As described above, with the electricity meter according to the first embodiment, the cover 11A can be attached and removed by sliding the slide portion 101, which reduces the work time compared to the current product.

Second Embodiment
Fig. 4 is an assembled perspective view of a watt-hour meter according to a second embodiment of the present invention, Fig. 4(a) shows the direction in which a cover is attached to a metering device with a sliding part fixed to the upper end, Fig. 4(b) shows a state in which the cover is attached to the metering device, and Fig. 4(c) shows the watt-hour meter assembled by sliding the sliding part downward.

Figure 5 shows an assembled cross-sectional view and a partial cross-sectional view of a watt-hour meter according to a second embodiment of the present invention. Figure 5(a) is a vertical cross-sectional view of the watt-hour meter shown in Figure 4(b). Figure 5(b) is a vertical cross-sectional view of the watt-hour meter shown in Figure 4(c). Figure 5(c) is a horizontal cross-sectional view of the right side of the watt-hour meter shown in Figure 5(a). Figure 5(e) is a horizontal cross-sectional view of the right side of the watt-hour meter shown in Figure 5(b). Figure 5(d) is a horizontal cross-sectional view of the right side showing the process from Figure 5(c) to Figure 5(e) and showing how the sliding side sliding fixing part bends.

Figure 6 is a perspective view of the case, base, cover, and slide part of an electricity meter according to a second embodiment of the present invention. Figure 6(a) shows a perspective view of the case, Figure 6(b) shows a perspective view of the base, Figure 6(c) shows a perspective view of the cover, and Figure 6(d) shows a perspective view of the slide part.

The electricity meter has a metering device with a case 5B, a base 4B, and a slide portion 201, a communication device (upper case 23 and lower case 24 shown in FIG. 4(a)) that is attached to the metering device and transmits the amount of electricity measured by the metering device to the outside, a terminal block that is attached to the metering device and connects to an electric wire, and a cover 11B that covers the metering device, the communication device, and the terminal block.

As shown in FIG. 6(a), the case 5B has a waterproof rib storage section 5Bc on the front side and both left and right side of the inside of the lower opening, and a case side sliding section 5B1, a case side upper sliding and fixing section 5B2, and a case side lower sliding and fixing section 5B3 on both left and right side of the inside of the lower opening.

As shown in FIG. 6(b), the base 4B has rib attachment recesses 4B1 on the front and on the outer left and right sides, and deformation recesses 4B2 on the outer left and right sides.

As shown in FIG. 6(c), the cover 11B has mounting ribs 11B1 and fixing recesses 11B5 on the back surface of the upper part and on the inside of both left and right sides so as to fit into the rib mounting recesses 4B1 of the base 4B.

As shown in FIG. 6(d), the slide section 201 has a waterproof rib 201a on the front of the upper part and on both left and right side sides that can be stored in the case waterproof rib storage section 5Bc of the case 5B and can be fitted into the fixing recess 11B5 of the cover 11B, slide side sliding sections 201b provided on the outside of both left and right side sides to fit into the case side sliding section 5B1 of the case 5B and slide the slide section 201 up and down, slide side sliding fixing section 201g of a snap fit structure having fixing convex sections 201f provided on both left and right sides to fit into the case side upper sliding fixing section 5B2 and the case side lower sliding fixing section 5B3 of the case 5B to fix the slide section 201, and recesses 201e provided on the outside of both left and right side sides to slide the slide section 201 up and down with a finger.

Next, the procedure for assembling the case and slide part of the second embodiment thus configured will be described. First, the slide side sliding part 201b of the slide part 201 shown in FIG. 6(d) is fitted to the case side sliding part 5B1 of the case 5B shown in FIG. 6(a) to assemble the slide part 201 to the case 5B and make the slide part 201 slidable up and down.

Next, as shown in FIG. 6(d), the fixing protrusions 201f of the slide-side sliding fixing parts 201g provided on both the left and right sides of the slide part 201 are engaged with the case-side upper sliding fixing parts 5B2 provided on both the left and right sides of the inside of the lower opening of the case 5B shown in FIG. 6(a) to fix the slide part 201 to the upper end, so that the top surface of the waterproof rib 201a of the slide part 201 and the top surface of the mounting rib 11B1 of the cover 11B are flush with each other.

Next, we will explain the procedure for attaching the cover to the metering device and assembling it into a watt-hour meter after assembling the metering device, communication device, and terminal block. First, as shown in Figures 4(a) to 4(b), 5(a), and 5(c), insert the mounting rib 11B1 of the cover 11B into the rib mounting recess 4B1 of the base 4B.

Next, as shown in FIG. 5(d), when the recess 201e of the slide portion 201 is pressed downward with a finger, the fixed protrusion 201f is pressed by the case side upper sliding fixed portion 5B2, causing the slide side sliding fixed portion 201g to bend inward, and the fixed protrusion 201f of the slide side sliding fixed portion 201g of the slide portion 201 comes off the case side upper sliding fixed portion 5B2 of the case 5B. At this time, the deformation recess 4B2 of the base 4B prevents the slide side sliding fixed portion 201g from coming into contact with the base 4B when it is bent inward.

Furthermore, when the recess 201e of the slide portion 201 is pressed downward with a finger, as shown in Figures 4(c), 5(b), and 5(e), the fixing protrusion 201f of the slide side sliding fixing portion 201g of the slide portion 201 engages with the case side lower sliding fixing portion 5B3 of the case 5B, and at the same time, the waterproof rib 201a of the slide portion 201 engages with the fixing recess 11B5 of the cover 11B, allowing the cover 11B to be attached and assembled into the watt-hour meter.

Even when the slide portion 201 is pressed down, the waterproof rib 201a of the slide portion 201 is stored in the case waterproof rib storage portion 5Bc of the case 5B. Therefore, the waterproof rib 201a of the slide portion 201 is located above the lower end of the case outer wall, so waterproofing can be maintained.

When removing the cover 11B, the concave portion 201e of the slide portion 201 is pushed upward with a finger, and the fixed convex portion 201f is pushed by the case side lower sliding fixed portion 5B3, causing the slide side sliding fixed portion 201g to bend inward, and the fixed convex portion 201f of the slide side sliding fixed portion 201g of the slide portion 201 comes off the case side lower sliding fixed portion 5B3 of the case 5B, and the fixed convex portion 201f of the slide side sliding fixed portion 201g of the slide portion 201 engages with the case side upper sliding fixed portion 5B2 of the case 5B, fixing the slide portion 201 to the upper end, and the upper surface of the mounting rib 11B1 of the cover 11B and the lower surface of the waterproof rib 201a of the slide portion 201 are flush with each other, and the cover 11B can be removed.

In this way, with the electricity meter according to the second embodiment, the cover 11B can be attached and removed by sliding the slide portion 201, which reduces the work time compared to the current product.

Third Embodiment
Fig. 7 is a perspective view and a partial cross-sectional view of a cover of an electricity meter according to a third embodiment of the present invention. Fig. 7(a) shows the cover with the sliding part pressed down, Fig. 7(b) shows the cover with the sliding part pressed up by a spring, Fig. 7(c) shows a horizontal cross-sectional view of the periphery of the spring on the right side of the cover shown in Fig. 7(a), and Fig. 7(d) shows a horizontal cross-sectional view of the periphery of the spring on the right side of the cover shown in Fig. 7(b).

Figure 8 is a perspective view of the cover and the sliding part of an electricity meter according to a third embodiment of the present invention. Figure 8(a) shows a perspective view of the cover, and Figure 8(b) shows a perspective view of the sliding part.

The electricity meter has a metering device with a case 5 and a base 4A, a communication device (upper case 23 and lower case 24 shown in FIG. 1(a)) that is attached to the metering device and transmits the amount of electricity measured by the metering device to the outside, a terminal block that is attached to the metering device and connects to an electric wire, and a cover 11C that covers the metering device, communication device, and terminal block, and has a slide portion 301 and a spring 302.

The watt-hour meter according to the third embodiment is different from the watt-hour meter according to the first embodiment in that a spring 302 is added. As shown in FIG. 8(a), the cover 11C is provided with mounting ribs 11C1 on the back surface and on the inside of both left and right sides of the upper part so as to fit into the rib mounting recess 4A1 of the base 4A, cover side sliding parts 11C2 on the front surface and on the outside of both left and right sides, and spring recesses 11C6 on both left and right sides for inserting the spring 302. As shown in FIG. 8(b), the slide part 301 is , waterproof ribs 301a that can be stored in the case waterproof rib storage section 5c of the case 5 on the front and both left and right sides of the upper part, slide side sliding sections 301b provided on the back and the inside of both left and right sides to fit into the cover side sliding section 11C2 of the cover 11C and slide the slide section 301 up and down, spring abutment sections 301h that abut the upper part of the spring 302 on both left and right sides, and recesses 301e provided on the outside of both left and right sides to slide the slide section 301 down with a finger. The other configurations are the same as those of the watt-hour meter according to the first embodiment.

Next, the procedure for assembling the cover and slide part of the third embodiment thus configured will be described. First, the springs 302 are inserted into the spring recesses 11C6 on both the left and right sides of the cover 11C shown in FIG. 8(a), and the slide side sliding part 301b of the slide part 301 shown in FIG. 8(b) is engaged with the cover side sliding part 11C2 of the cover 11C to assemble the slide part 301 and the spring 302 to the cover 11C and make the slide part 301 slidable up and down. At this time, the spring 302 abuts against the spring abutment part 301h of the slide part 301, and as shown in FIG. 7(b) and FIG. 7(d), the slide part 301 is constantly pushed up.

Next, with the metering device, communication device, and terminal block assembled, the procedure for attaching the cover to the metering device and assembling it into a watt-hour meter will be described. First, the recess 301e of the slide part 301 is pressed downward with a finger, so that the spring abutment part 301h of the slide part 301 bends the spring 302, and as shown in Figures 7(a) and 7(c), the top surface of the waterproof rib 301a of the slide part 301 and the top surface of the mounting rib 11C1 of the cover 11C are flush with each other.

Next, after inserting the mounting rib 11C1 of the cover 11C into the rib mounting recess 4A1 of the base 4A, the finger is released from the recess 301e of the slide part 301, and as shown in FIG. 7(d), the restoring force of the spring 302 pushes up the slide part 301, and the waterproof rib 301a of the slide part 301 is inserted into the case waterproof rib storage part 5c of the case 5, so that the cover 11C can be attached and assembled into the watt-hour meter.

When removing the cover 11C, the recess 301e of the slide portion 301 is pressed downward with a finger, the waterproof rib 301a of the slide portion 301 is disengaged from the case waterproof rib storage portion 5c of the case 5, and the top surface of the waterproof rib 301a of the slide portion 301 and the top surface of the mounting rib 11C1 of the cover 11C are flush with each other, and the cover 11C can then be removed.

In this way, with the electricity meter according to the third embodiment, compared to the first and second embodiments in which the sliding sections 101 and 201 are slid with a finger, the spring 302 ensures that the meter remains closed, preventing the meter from being forgotten to be closed.

(Fourth embodiment)
Fig. 9 is a perspective view and a partial cross-sectional view of a cover of a watt-hour meter according to a fourth embodiment of the present invention. Fig. 9(a) shows a state in which the cover is attached to a metering device with the slide portion pushed up, Fig. 9(b) shows the watt-hour meter assembled with the slide portion pushed down by a spring, Fig. 9(c) shows a horizontal cross-sectional view of the periphery of the spring on the right side of the watt-hour meter shown in Fig. 9(a), and Fig. 9(d) shows a horizontal cross-sectional view of the periphery of the spring on the right side of the watt-hour meter shown in Fig. 9(b).

Figure 10 is a perspective view of the case and the sliding part of a watt-hour meter according to a fourth embodiment of the present invention. Figure 10(a) shows a perspective view of the case, and Figure 10(b) shows a perspective view of the sliding part.

The electricity meter has a metering device that has a case 5D, a base 4B, a slide portion 401, and a spring 402, a communication device that is attached to the metering device and transmits the amount of electricity measured by the metering device to the outside, a terminal block that is attached to the metering device and connects to an electric wire, and a cover 11B that covers the metering device, the communication device, and the terminal block.

The watt-hour meter according to the fourth embodiment is different from the watt-hour meter according to the second embodiment in that a spring 402 is added, and as shown in FIG. 10(a), the case 5D is provided with a case waterproof rib storage section 5Dc on the front side and both left and right side sides of the inside of the lower opening, and a case side sliding section 5D1 and a spring recess 5D4 for inserting the spring 402 on the inside of the lower opening on both left and right side sides. As shown in FIG. 10(b), the sliding section 401 is provided with a spring recess 5D4 for inserting the spring 402 on the front side and both left and right side sides of the upper part of the case 5D. There are provided waterproof ribs 401a that can be stored in the case waterproof rib storage section 5Dc and can be fitted into the fixing recess 11B5 of the cover 11B, slide side sliding sections 401b provided on the outside of both left and right sides to fit into the case side sliding section 5D1 of the case 5D and slide the slide section 401 up and down, spring abutment sections 401h that abut against the lower part of the spring 402 on both left and right sides, and open abutment surfaces 401i provided on the front and the outside of both left and right sides to slide the slide section 401 up with a finger. The other configurations are the same as those of the watt-hour meter according to the second embodiment.

Next, the procedure for assembling the case and slide part of the fourth embodiment thus configured will be described. First, the spring 402 is inserted into the spring recesses 5D4 on both the left and right sides of the case 5D shown in FIG. 10(a), and the slide side sliding part 401b of the slide part 401 shown in FIG. 10(b) is engaged with the case side sliding part 5D1 of the case 5D to assemble the slide part 401 and spring 402 to the case 5D and make the slide part 401 slidable up and down. At this time, the spring 402 abuts against the spring abutment part 401h of the slide part 401, and the slide part is constantly pressed down.

Next, the procedure for attaching the cover to the metering device with the metering device, communication device, and terminal block assembled will be described. First, the open abutment surface 401i of the slide portion 401 is pushed up by the upper surface of the mounting rib 11B1 of the cover 11B, and the spring abutment portion 401h of the slide portion 401 bends the spring 402, so that the upper surface of the mounting rib 11B1 of the cover 11B, which is flush with the open abutment surface 401i of the slide portion 401, becomes flush with the upper surface of the rib mounting recess 4B1 of the base 4B. Then, as shown in Figures 9(a) and 9(c), the mounting rib 11B1 of the cover 11B is inserted into the rib mounting recess 4B1 of the base 4B.

Then, the restoring force of the spring 402 pushes the slide portion 401 down, and as shown in Figures 9(b) and 9(d), the waterproof rib 401a of the slide portion 401 engages with the fixing recess 11B5 of the cover 11B, allowing the cover 11B to be attached and assembled into the watt-hour meter.

When removing the cover 11B, the open abutment surface 401i of the slide portion 401 is pushed upward with a finger, and the spring abutment portion 401h of the slide portion 401 bends the spring 402, and the waterproof rib 401a of the slide portion 401 is inserted into the case waterproof rib storage portion 5Dc of the case 5D. The open abutment surface 401i of the slide portion 401 is flush with the upper surface of the rib mounting recess 4B1 of the base 4B, which is flush with the upper surface of the mounting rib 11B1 of the cover 11B, and the open abutment surface 401i of the slide portion 401 is flush with the upper surface of the rib mounting recess 4B1 of the base 4B, and the cover 11B can be removed.

In this way, with the electricity meter according to the fourth embodiment, the spring 402 ensures that the meter remains closed, compared to the first and second embodiments, when the sliding sections 101 and 201 are slid with a finger, making it possible to prevent the meter from forgetting to close.

Fifth Embodiment
Fig. 11 shows an assembled perspective view and a partial cross-sectional view of a watt-hour meter according to a fifth embodiment of the present invention. Fig. 11(a) shows a state in which a cover with a sliding part fixed at the lower end is attached to the metering device, Fig. 11(b) shows a state in which the sliding part is slid upward and a sealing part appears at the position of the sealing recess, Fig. 11(c) shows a sealed watt-hour meter with a sealing cap attached to the sealing part shown in Fig. 11(b), and Fig. 11(d) shows a vertical cross-sectional view of the periphery of the sealing part of the watt-hour meter shown in Fig. 11(c).

Figure 12 shows a perspective view and a cross-sectional view of the cover and the sliding part of a watt-hour meter according to the fifth embodiment of the present invention. Figure 12(a) shows a perspective view of the cover with the sealing part attached, Figure 12(b) shows a vertical cross-sectional view of the periphery of the sealing part of the cover shown in Figure 12(a), and Figure 12(c) shows a perspective view of the sliding part.

The watt-hour meter according to the fifth embodiment is different from the watt-hour meter according to the first embodiment in that a sealing section 503 is added. As shown in FIG. 12(a), the cover 11E is provided with mounting ribs 11E1 on the back surface and on the inside of both left and right sides of the upper part so as to fit into the rib mounting recess 4A1 of the base 4A, cover side sliding sections 11E2 on the front surface and on the outside of both left and right sides, a cover side sliding fixing section 11E4 having a snap-fit structure with fixing protrusions 11E3 on both left and right sides, and a seal mounting section 11E7 on the front surface to which the sealing section 503 is attached. As shown in FIG. 12(c), the slide section 501 is provided with waterproof ribs that can be stored in the case waterproof rib storage section 5c of the case 5 on the front surface and both left and right sides of the upper part. 501a, a slide side sliding part 501b provided on the back and both left and right side inner sides to slide the slide part 501 up and down by fitting with the cover side sliding part 11E2 of the cover 11E, a slide side upper sliding fixing part 501c and a slide side lower sliding fixing part 501d provided on the inside of both left and right sides to fit with the fixing convex part 11E3 of the cover side sliding fixing part 11E4 of the cover 11E to fix the slide part 501, a recess 501e provided on the outside of both left and right sides to slide the slide part 501 up and down with a finger, a seal sliding recess 501j through which the seal part 503 passes when the slide part 501 slides up and down, and a sealing recess 501k as a recess for attaching the sealing cap 504 are provided. The sealing recess 501k can be fitted into the seal mounting part 11E7. The other configurations are the same as those of the watt-hour meter according to the first embodiment.

Next, the procedure for assembling the cover and slide part of the fifth embodiment thus configured will be described. First, the slide side sliding part 501b of the slide part 501 shown in FIG. 12(c) is fitted to the cover side sliding part 11E2 of the cover 11E in which the sealing part 503 shown in FIG. 12(a) is attached to the seal attachment part 11E7, and the slide part 501 is assembled to the cover 11E and made slidable up and down.

Next, the fixing protrusions 11E3 of the cover side sliding fixing part 11E4 provided on both the left and right side surfaces of the cover 11E are engaged with the slide side lower sliding fixing parts 501d provided on the inside of both the left and right sides of the slide part 501 to fix the slide part 501 to the lower end, so that the upper surface of the waterproof rib 501a of the slide part 501 and the upper surface of the mounting rib 11E1 of the cover 11E are flush with each other. At this time, the sealing part 503 is stored inside the slide side sliding part 501b of the slide part 501.

Next, we will explain the procedure for attaching the cover to the metering device and assembling it into a watt-hour meter after assembling the metering device, communication device, and terminal block. First, as shown in Figure 11(a), insert the mounting rib 11E1 of the cover 11E into the rib mounting recess 4A1 of the base 4A.

Next, as shown in FIG. 11(b), when the concave portion 501e of the slide portion 501 is pushed upward with a finger, the slide side upper sliding and fixing portion 501c pushes the fixing convex portion 11E3, the cover side sliding and fixing portion 11E4 is bent inward, the fixing convex portion 11E3 of the cover side sliding and fixing portion 11E4 of the cover 11E is disengaged from the slide side upper sliding and fixing portion 501c of the slide portion 501, and the fixing convex portion 11E3 of the cover side sliding and fixing portion 11E4 of the cover 11E is disengaged from the cover side sliding and fixing portion 501c of the slide portion 501. When the fixed convex portion 11E3 engages with the slide side lower sliding fixed portion 501d of the slide portion 501 and the waterproof rib 501a of the slide portion 501 is inserted into the case waterproof rib storage portion 5c of the case 5, the sealing recess 501k is stored in the seal mounting portion 11E7, and the sealing portion 503 passes through the seal sliding recess 501j and is positioned at the position of the sealing recess 501k of the slide portion 501, as shown in FIG. 11(b).

After that, as shown in FIG. 11(c), by attaching a sealing cap 504 to the sealing portion 503, the sealing cap 504 fits into the sealing recess 501k of the sliding portion 501, fixing and sealing the sliding portion 501, thereby preventing tampering.

Furthermore, in the watt-hour meter according to the third embodiment, by adding a sealing section, providing a seal mounting section on the cover, and providing a seal sliding recess and a sealing recess on the sliding section, it is possible to seal and prevent tampering in the same way as the watt-hour meter according to the fifth embodiment.

Sixth Embodiment
Fig. 13 is an assembly perspective view and a partial cross-sectional view of a watt-hour meter according to a sixth embodiment of the present invention. Fig. 13(a) shows a state in which a cover with a sliding part fixed to the lower end is attached to the metering device, Fig. 13(b) shows a state in which the sliding part is slid downward, Fig. 13(c) shows a sealed watt-hour meter with a sealing cap attached to the sealing part shown in Fig. 13(b), and Fig. 13(d) shows a vertical cross-sectional view of the periphery of the sealing part of the watt-hour meter shown in Fig. 13(c).

Figure 14 shows a perspective view and a cross-sectional view of the cover and the sliding part of a watt-hour meter according to a sixth embodiment of the present invention. Figure 14(a) shows a perspective view of the cover with the sealing part attached, Figure 14(b) shows a vertical cross-sectional view of the periphery of the sealing part of the cover shown in Figure 14(a), and Figure 14(c) shows a perspective view of the sliding part.

The electricity meter according to the sixth embodiment is different from the electricity meter according to the second embodiment in that a sealing section 503 is added. As shown in FIG. 14(a), the cover 11F is provided with a mounting rib 11F1, a fixing recess 11F5, and a seal mounting section 11F7 for mounting the sealing section 503 and engaging with the sealing cap 504 on the back surface and the inside of both left and right sides of the upper part so as to engage with the rib mounting recess 4B1 of the base 4B. As shown in FIG. 14(c), the slide section 601 is provided with a waterproof rib that can be stored in the case waterproof rib storage section 5Bc of the case 5B on the front surface and both left and right sides of the upper part and can be fitted into the fixing recess 11B5 of the cover 11B. The slide side sliding part 601b is provided on the outside of both left and right sides to slide the slide part 601 up and down by engaging with the case side sliding part 5B1 of the case 5B, the slide side sliding fixing part 601g has a snap-fit structure having fixing convex parts 601f provided on both left and right sides to fix the slide part 601 by engaging with the case side upper sliding fixing part 5B2 and the case side lower sliding fixing part 5B3 of the case 5B, the recessed part 601e is provided on the outside of both left and right sides to slide the slide part 601 up and down with a finger, and the sealing recessed part 601k is provided as a recess for attaching the sealing cap 504. The other configurations are the same as those of the watt-hour meter according to the second embodiment.

Next, the procedure for assembling the case and slide part of the sixth embodiment thus configured will be described. First, the slide side sliding part 601b of the slide part 601 shown in FIG. 14(c) is fitted to the case side sliding part 5B1 of the case 5B shown in FIG. 6(a) to assemble the slide part 601 to the case 5B and make the slide part 601 slidable up and down.

Next, the fixing protrusions 601f of the slide side sliding fixing parts 601g provided on both the left and right sides of the slide part 601 are engaged with the case side upper sliding fixing parts 5B2 provided on both the left and right sides of the inside of the lower opening of the case 5B, fixing the slide part 601 to the upper end, so that the top surface of the waterproof rib 601a of the slide part 601 and the top surface of the mounting rib 11F1 of the cover 11F are flush with each other.

Next, we will explain the procedure for attaching the cover to the metering device and assembling it into a watt-hour meter after assembling the metering device, communication device, and terminal block. First, as shown in FIG. 13(a), the mounting rib 11F1 of the cover 11F, in which the sealing portion 503 is attached to the seal mounting portion 11F7, is inserted into the rib mounting recess 4B1 of the base 4B.

Next, as shown in FIG. 13(b), when the recess 601e of the slide portion 601 is pressed downward with a finger, the fixed protrusion 601f is pressed by the case side upper sliding fixed portion 5B2, causing the slide side sliding fixed portion 601g to bend inward, and the fixed protrusion 601f of the slide side sliding fixed portion 601g of the slide portion 601 comes off the case side upper sliding fixed portion 5B2 of the case 5B. At this time, the deformation recess 4B2 of the base 4B prevents the slide side sliding fixed portion 601g from coming into contact with the base 4B when it is bent inward.

Furthermore, when the recess 601e of the slide portion 601 is pressed downward with a finger, as shown in FIG. 13(b), the fixing protrusion 601f of the slide side sliding fixing portion 601g of the slide portion 601 engages with the case side lower sliding fixing portion 5B3 of the case 5B, and the waterproof rib 601a of the slide portion 601 engages with the fixing recess 11F5 of the cover 11F, and at the same time, the upper and lower ends of the seal mounting portion 11F7 of the cover 11F coincide with the upper and lower ends of the sealing recess 601k of the sealing recess of the slide portion 601.

Then, as shown in FIG. 13(c), by attaching the sealing cap 504 to the sealing portion 503, the sealing cap 504 is fitted into the seal mounting portion 11F7 of the cover 11F and the sealing recess 601k of the sliding portion 601, thereby fixing and sealing the sliding portion 601 and preventing tampering.

In addition, in the watthour meter according to the fourth embodiment, by adding a sealing section, providing a seal mounting section on the cover, and providing a sealing recess on the sliding section, it is possible to seal and prevent tampering in the same way as the watthour meter according to the sixth embodiment.

1 Circuit section 1a Display section 1b Communication device connection section 1c Open/close detection section 1d Conductor connection section 1e Sensor connection section 1f Base mounting section 2 Sensor section 2a Sensor side circuit connection section 3 Conductor 3a Conductor side circuit connection section 3b Conductor side terminal connection section 4, 4A, 4B Base 4a, 4Aa, 4Ba Communication device connection section through hole 4b, 4Ab, 4Bb Communication device mounting section 4c, 4Ac, 4Bc Block mounting section 4d, 4Ad, 4Bd Open/close detection section through hole 4e, 4Ae, 4Be Case mounting section 4f, 4Af, 4Bf Conductor through hole 4g, 4Ag, 4Bg Circuit mounting section 4A1, 4B1 Rib mounting recess 4B2 Deformation recess 5, 5B, 5D Case 5a, 5Ba, 5Da Display window 5b, 5Bb, 5Db Case side base mounting portion 5c, 5Bc, 5Dc Case waterproof rib storage portion 5d, 5Bd, 5Dd Case waterproof rib 5e, 5Be, 5De Case side fixing screw mounting portion 5B1, 5D1 Case side sliding portion 5B2 Case side upper sliding and fixing portion 5B3 Case side lower sliding and fixing portion 5D4 Spring recess 6 Block mounting screw 7 Conductor connection screw 8 Wire mounting screw 9 Terminal 9a Wire storage portion 9b Terminal side conductor connection portion 10 Block 10a Block side base mounting portion 10b Cover mounting female thread portion 10c Wire through hole 10d Terminal mounting portion 10e Block side fixing screw mounting portion 10f Block waterproof rib storage portion 11, 11A, 11B, 11C, 11E, 11F Cover 11a, 11Aa, 11Ba, 11Ca, 11Ea, 11Fa Detection convex portion 11b Cover waterproof rib 11A1, 11B1, 11C1, 11E1, 11F1 Mounting rib 11A2, 11C2, 11E2 Cover side sliding portion 11A3, 11E3 Fixing convex portion 11A4, 11E4 Cover side sliding fixing portion 11B5, 11F5 Fixing recess 11C6 Spring recess 11E7, 11F7 Seal mounting portion 12 Cover mounting screw 21 Cable 21a Weighing device connection portion 22 LED light guide portion 23 Upper case 24 Lower case 24a Weighing device mounting portion 101, 201, 301, 401, 501, 601 Slide portion 101a, 201a, 301a, 401a, 501a, 601a Waterproof ribs 101b, 201b, 301b, 401b, 501b, 601b Slide side sliding portion 101c, 501c Slide side upper sliding and fixing portion 101d, 501d Slide side lower sliding and fixing portion 101e, 201e, 301e, 501e, 601e Recess 201f, 601f Fixing protrusion
201g, 601g Slide side sliding fixing portion 301h, 401h Spring abutment portion 401i Open abutment surface 501j Seal sliding recess 501k, 601k Sealing recess 302, 402 Spring 503 Sealing portion 504 Sealing cap

Claims (6)

The power supply device includes a metering device having a case and a base, a communication device attached to the metering device and configured to transmit an amount of electric power measured by the metering device to an outside, a terminal block attached to the metering device and configured to connect to an electric wire, and a cover that covers the metering device, the communication device, and the terminal block and has a sliding portion;
a case waterproof rib storage section is provided on the case, a rib mounting recess is provided on the base, a cover side sliding and fixing section having a snap-fit structure having a mounting rib that fits into the rib mounting recess, a cover side sliding section, and a fixing protrusion is provided on the cover, and a waterproof rib, a slide side sliding section, a slide side upper sliding and fixing section, a slide side lower sliding and fixing section, and a recess are provided on the slide section,
The cover is attached by inserting the mounting rib into the rib mounting recess with the slide-side sliding part engaged with the cover-side sliding part and the mounting rib into the rib mounting recess, and then pushing the recess of the slide part upward with a finger, so that the mounting convex part comes off the slide-side upper sliding fixed part and the mounting convex part engages with the slide-side lower sliding fixed part, and at the same time, the waterproof rib is inserted into the case waterproof rib storage part. The power supply device includes a metering device having a case, a base, and a slide portion, a communication device attached to the metering device and configured to transmit an amount of electric power measured by the metering device to an outside, a terminal block attached to the metering device and configured to connect to an electric wire, and a cover for covering the metering device, the communication device, and the terminal block.
a case waterproof rib housing section, a case side sliding section, a case side upper sliding and fixing section, and a case side lower sliding and fixing section are provided on the case; a rib mounting recess and a deformation recess are provided on the base; a waterproof rib, a slide side sliding section, a slide side sliding and fixing section having a snap-fit structure having a fixing protrusion and a recess are provided on the slide section; a mounting rib and a fixing recess are provided on the cover;
a case-side sliding portion that is fitted to the case-side sliding portion to allow the slide portion to slide up and down, and a case-side upper sliding fixed portion that is fitted to the case-side upper sliding fixed portion, and a mounting rib is inserted into the rib mounting recess, and then the recess of the slide portion is pressed downward with a finger, whereby the mounting convex portion is pushed by the case-side upper sliding fixed portion, causing the slide-side sliding fixed portion to bend toward the deformation recess, and the mounting convex portion comes off the case-side upper sliding fixed portion, and the mounting convex portion fits into the case-side lower sliding fixed portion, and at the same time, the waterproof rib fits into the fixing recess, thereby attaching the cover. The power supply device includes a metering device having a case and a base, a communication device attached to the metering device and configured to transmit an amount of electric power measured by the metering device to an outside, a terminal block attached to the metering device and configured to connect to an electric wire, and a cover covering the metering device, the communication device, and the terminal block and configured to have a slide portion and a spring,
a waterproof rib storage section is provided on the case, a rib mounting recess is provided on the base, a mounting rib that fits into the rib mounting recess, a cover side sliding section, and a spring recess into which the spring is inserted are provided on the cover, and a waterproof rib, a slide side sliding section, a spring abutment section that abuts against the spring, and a recess are provided on the slide section,
This electricity meter is characterized in that the slide side sliding part is engaged with the cover side sliding part to allow the slide part to slide up and down, and by pressing the recess of the slide part downward with a finger, the spring abutment part bends the spring so that the upper surface of the waterproof rib becomes flush with the upper surface of the mounting rib, and after the mounting rib is inserted into the rib mounting recess, by releasing the finger from the recess of the slide part, the slide part is pushed up by the restoring force of the spring, and the waterproof rib is inserted into the case waterproof rib storage part, thereby attaching the cover. The power supply device includes a metering device having a case, a base, a slide portion, and a spring, a communication device attached to the metering device and configured to transmit to an outside an amount of electric power measured by the metering device, a terminal block attached to the metering device and configured to connect to an electric wire, and a cover for covering the metering device, the communication device, and the terminal block;
the case is provided with a waterproof rib storage section, a case side sliding section, and a spring recess for inserting the spring; the base is provided with a rib mounting recess; the slide section is provided with a waterproof rib, a slide side sliding section, a spring abutment section that abuts against the spring, and an open abutment surface; and the cover is provided with a mounting rib and a fixing recess;
The cover is attached by fitting the slide side sliding part to the case side sliding part, allowing the slide part to slide up and down, and by pushing the open abutment surface upward with the upper surface of the mounting rib, the spring abutment part bends the spring, and at the same time, the mounting rib is inserted into the rib mounting recess, and the slide part is pushed down by the restoring force of the spring, so that the waterproof rib fits into the fixing recess, thereby attaching the cover. The watt-hour meter according to claim 1 or 3, characterized in that a seal mounting part is provided on the cover, a seal part is attached to the seal mounting part, a seal sliding recess and a sealing recess are provided on the slide part, the slide part is slid to the lower end to store the seal part in the slide side sliding part, and then the mounting rib is inserted into the rib mounting recess, and then the slide part is pushed up, so that the waterproof rib is inserted into the case waterproof rib storage part, and at the same time, the sealing part passes through the seal sliding recess and appears in the sealing recess, and a sealing cap is attached to the sealing part, and the sealing cap is fitted into the sealing recess to fix and seal the slide part. The watt-hour meter according to claim 2 or 4, characterized in that a seal mounting part is provided on the cover, a seal part is attached to the seal mounting part, a sealing recess is provided on the slide part, and the mounting rib is inserted into the rib mounting recess while the slide part is slid to the upper end, and then the slide part is pressed down, so that the waterproof rib fits into the fixing recess, and at the same time, the upper and lower ends of the seal mounting part match the upper and lower ends of the sealing recess, respectively, and a seal cap is attached to the seal part, so that the seal cap fits into the seal mounting part and the sealing recess, and the slide part is fixed and sealed.

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