JPH02149227A - Electric water heater with rotating stand - Google Patents

Abstract

PURPOSE:To safely use an electric water heater incorporating a rotary table with no short- circuit even though any one of a plurality of lead wires is broken by changing the arrangements of the lead wires adapted to be subjected to bending during rotation, relative to each other so to allow the arrangement to have variations in the durability against bending. CONSTITUTION:The arrangement of a plurality of lead wires 23 from a water heating control device 10 which are made to pierce through a part of a cover 5 covering over the lower end of a water heater body 2 and which are taken out therefrom, and the arrangement of a plurality of lead wires 26 connected to a terminal board 19 provided in the vicinity of an external edge of a rotary bed 12 are made to be different from each other so as to take different diameters of curves. Further, the thickness or hardness of the insulating covers of the above-mentioned lead wires are changed, the thicknesses of core wires thereof are changed, different wires are laid coaxially with the core wires so as to reinforce the latter, or the above-mentioned measures are combined. With this arrangement, it is possible to increase the diameter of a curve in the lead wires or to increase the ratio between the diameter of the core wires and the radius of a curve in the lead wires, thereby it is possible to increase the durability of the lead wires against bending, to eliminate simultaneous breakage of the lead wires, and to prevent the lead wires from being short-circuited.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric water heater for use in general households.

Conventional technology Conventionally, this type of electric water heater has been developed by patent application No. 63-2070G6.
As shown in this issue, the multiple lead wires taken out from the kite of the cover attached to cover the lower end of the water heater body were each made of the same core wire covered with the same insulating coating material.

Problems to be Solved by the Invention In such a conventional configuration, the bending durability strength of the plurality of lead wires as the water heater body rotates is almost the same.
There was a problem in that the cut lead wires were short-circuited to each other.

The present invention solves the above problem, and provides an electric water heater with a rotary table in which a plurality of wires are made to have different bending durability strengths so that they are not cut at the same time.
(The purpose is to

Means for Solving the Problems In order to solve these conventional problems, the present invention has a plurality of lead wires of a hot water temperature control device taken out through a part of the cover and taken out below, and a wire near the outer edge of the rotary table. A plurality of lead wires connected between the terminal block and the provided terminal block are constructed by changing the configuration of each lead wire so that each lead wire can have a different bending radius.

Furthermore, the thickness or hardness of each insulating coating material may be changed, the thinness of a large number of core wires may be varied, or the core wires may be coaxially reinforced with a different type of wire, or these may be reinforced. It's a combination.

Effect: With this configuration, the bending depth of the lead wire can be increased, or the ratio of the core wire diameter to the lead edge bending radius can be increased.
By increasing the bending durability of the lead wires with this measure, it is possible to eliminate simultaneous cutting of a plurality of lead wires, and to prevent short circuits between the lead wires when one of the lead wires is cut.

EXAMPLE Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 is a partially cutaway front view of an electric water heater with a rotary table according to an embodiment of the present invention, and FIG. 2 is a partially cutaway bottom view thereof. In FIGS. 1 and 2, a cylindrical container 1 made of a thin plate of stainless steel or the like is suspended and supported within a water heater body 2, which is also cylindrical. The bottom surface of the container 1 is formed into a concentric multi-tiered shape, and a donut-shaped flattened plate 3 is held in the middle part by a presser metal fitting 3a, and the outer surface of the bottom of the container 1 near the outer periphery of the presser metal fitting 3a is removed. A plurality of U-shaped container support plates 4 or 4 are appropriately attached to the container.

A cover 5 covering the lower end opening of the water heater main body 2 is connected to the container support plate 4 by screws 8 provided on a disc-shaped holding plate 7 inside a protruding ring 6 on the lower surface of the cover 5, and is connected to the container support plate 4. It is fixed by pulling it downward. Further, a hot water temperature control device 10 is disposed in a medium-heat space 9 between the cover 5 and the bottom of the container 1. Furthermore, a ring groove 11 is provided on the lower surface near the outer periphery of the cover 5, and a projection 13 of a substantially dish-shaped rotary table 12 is fitted into this ring groove 11. A boss 14 that protrudes downward and has a recess in the center is provided at the center of the retaining plate central portion 7a of the cover 5, into which a protrusion 15 provided at the center of the rotary table 12 is fitted and rotated by a screw 16. The stand 12 is rotatably attached to the cover 5. Therefore, the rotary table 12 does not come off the cover 5, and the load of the electric water heater is stopped by the projection 13 via the link groove 11. Furthermore, the wave-shaped circular washer 17 maintains an appropriate rotational force of the cover 5 with respect to the rotary table 12, and also maintains a good gap therebetween.

Projection part 15 of rotary table 12 and retaining plate central part 7a of cover 5
A compartment 18 is formed between the compartment 18 and a terminal block 19 is fixed to a part of the outer periphery of the rotary table 12 in this compartment 18. A terminal bar 21 is attached to the inner side, and a terminal plate 22 is attached to the inner side, and the terminal bar 21 and the terminal plate 22 are electrically connected.

On the other hand, multiple lead wires 23 coming out from the hot water temperature control device 10
is taken out downward from a through hole 24 provided in the - section of the center portion 7a of the retaining plate of the cover 5. This through hole 24 has a minimum size necessary for wiring the lead wire 23. Here, the lead wire 23 is connected to the lead wire 26 by the connector 25.
a, 26b, and further connected to lead wires 26a, 26b.
is connected to the terminal plate 22 with a set screw 27. Connector 2
5 is held by kite 28.

By connecting the lead wires 23, 26a, and 26b with the connector 25 in this way, it is possible to
3 from the cover 5, tighten the screws 8, and fix the cover 5 to the container support plate 4, and the electric water heater can be assembled easily and firmly. Since the lead wires 26a and 26b are connected over a short distance between the connector 25 and the terminal plate 22, each having a fixed position, the length accuracy is well determined, and as a result, the bending of the lead wires 26a and 26b in FIG. It can be made into any convenient shape and is easy to assemble.

The post 14 also serves as a kite for bending the lead wires 26a and 26b, and no extra pins are required, making the configuration even simpler. Reference numeral 29 denotes a guide pin for rotation in the opposite direction, which is provided on the lower surface of the support plate central portion 7a of the cover 5. 31
．． Reference numerals 32 denote rings provided opposite to the support plate central portion 7a of the cover 5 and the corresponding rotating table 12, with the through hole 24 located inside and the terminal block 19 located outside. The lead wire 26a serves as a guide for bending the lead wires 26a and 26b when the cover 5 is rotated.

This prevents the 26b from getting caught or tangled.

When assembling the lead wires 26a and 26b, one wire is first connected to the lead wire 23 with the connector 25, and then stored in the kite 28. The other side is the center part 7 of the retaining plate of the cover 5.
The terminal block 19 is connected to the terminal block 19 temporarily fixed in the recess 30 of a, and then the terminal block 19 is moved and fixed in a predetermined position on the rotary table 12 with screws 20. Because of this structure, the connector 25 can be removed when disassembling the water heater, and the water temperature control device 10 and the like inside the water heater can be repaired separately.

As shown in FIG. 3, the lead wire 26a has a large number of thin core wires 36 made of copper with a diameter of about 0.05 mm for electrical conduction, and the entire outer circumference of the core wires 36 is covered with a flexible electrically insulating coating material 37. covered with. However, as shown in FIG. 4, the lead wire 26b on the side closer to the retaining plate center 7a of the cover 5 has a thicker sheathing material 38 than the sheathing material 37 of the lead wire 26a, and has a bending radius. a, b, etc. become larger, and the bending durability of the lead wire 26b increases.

Moreover, even if the core 49.36 of the lead wire 26b itself is made thinner, the same effect can be achieved by the same action.

Further, the lead wire 39 shown in FIG. 5 is a substitute for the lead wire 26b, and the sheathing 40 is slightly harder and stronger than that of the lead wire 26a.
Similarly, the bending radii a, b, etc. become larger. The lead wire 41 shown in FIG. 6 is also a substitute for the lead @26b shown in FIG. 4, and has a wire 42 having wJ4'i such as stainless steel mixed in the core wire 36, and is similar to the above. It has the effect of increasing the bending radii a, b, etc.

The lead wires 26b and 39.41, which have larger bending radii a and b, are less likely to be cut, so even if the lead wire 26a is cut first, the lead wires 26a and 39.
41 is cut at the same time as lead 1i26a, and lead wire 2
6a and the lead wires 26b and 39.41 will not be short-circuited.

Further, the reason why the lead wire 26a is arranged on the side away from the support plate central portion 7a of the cover 5 is that when the core wire 36 is bent and cut, the cut portion generates heat due to self-heating by the cut core wire 26a itself. This is to prevent the central portion 7a of the retaining plate of the cover 5 from catching fire.

In addition, if necessary, the lead wire 26a and the lead wire 26b
, 39.41 may be replaced.

Effects of the Invention As described above, according to the rotary table (=1 electric water heater) of the present invention, the mutual configuration of the plurality of lead wires that are bent during rotation is changed to improve the bending durability. It is safe to use as there is no chance of multiple lead wires breaking and short-circuiting of the core wires.

[Brief explanation of the drawing]

Fig. 1 is a partially cut-away front view of an embodiment of the electric water heater with a rotary stand of the present invention, and Fig. 2 is a partially cutaway bottom view of the rotary stand A.1 electric water heater as seen from below. 3 to 6 are sectional views of the lead wires, respectively. DESCRIPTION OF SYMBOLS 1... Container, 2... Water boiler body, 3... Heater, 5... Cover, 7... Holding plate, 10... Hot water temperature control device, 11... Ring well, 12 ...Rotary table, 13
...Protrusion, 19...Terminal block, 21...Terminal bar, 2
2...Terminal board, 24...Through hole, 25...Connector, 26a, 26b...-Lead wire, 36. ,,
Core wire, 37.38... Insulation coating material, 39.41...
Lead wire, 40... Insulating coating material, 42... Core metal. Agent Yoshihiro Morimoto Figure 3 %-/Q 瘉37- Insulation compound [) Figure 4 Moxibustion - Insulation product Kasai) Figure 5 Arrow - = 7) -91 line 40--Itentery Tomoe connection store 1 Honey Neo No. 6 Figure 41---Reel play 1 42---/Lr Gold

Claims (1)

[Claims] 1. A hot water temperature control device is provided in the lower space of a container suspended and supported within the water heater body, and a cover is provided to cover the lower end of the water heater body, and the cover is rotatably attached to the lower surface of the cover. A plurality of lead wires of the hot water temperature control device that penetrate a part of the cover and are taken out downward and a terminal block provided near the outer edge of the rotary table are provided. This is an electric water heater with a rotary stand that is constructed from book lead wires that have different configurations so that each lead wire can have a different bending radius. 2. Connect the multiple lead wires connected between the multiple lead wires of the hot water temperature control device that penetrated a part of the cover and took them out downward, and the terminal block installed near the outer edge of the rotating table. Leads that change the thickness or hardness of the insulation sheath, change the thinness of a large number of core wires, or reinforce with a different wire coaxially with the core wires, or a combination of these. The electric water heater with rotating stand according to claim 1, wherein the electric water heater is constructed of a wire.