JPH02149228A - Electric water heater with rotating stand - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 was disclosed in Japanese Patent Application No. 63-2070 (3).
As shown in item 6, the multiple lead wires taken out from the cover kite should not be installed so as to cover the lower end of the water heater body. Ta.

Problems to be Solved by the Invention In such a conventional structure, the core wires of the lead wire are made thin and flexible and are bundled in large numbers in order to withstand the rotation of the water heater body. Therefore, the ratio of the core wire thickness to the bending curvature of the lead wire could not be lower than a certain value, and sufficient rotational durability could not be obtained.

The present invention solves the above problems, and provides an electric water heater with a rotary stand that increases the bending radius of the lead wire, prevents the core wire for electrical conduction from breaking, and improves rotational durability. This is the purpose.

Means for Solving the Problems In order to solve the problems of the conventional art, the present invention provides a lead wire for a hot water temperature control device that penetrates a part of the cover and is taken out downward, and a lead wire that is installed near the outer edge of the rotary table. The lead wire connected to the terminal block is made of a lead wire reinforced with a different wire coaxially with the core wire for electrical continuity.

Further, in the present invention, the lead wire described above is constructed of a lead wire whose core wire is covered with an insulating coating material that allows a large bending radius.

Effect: With this configuration, the bending radius of the lead wire can be kept large and the core wire for electrical conduction can be prevented from being cut.
Sufficient rotational durability can be achieved.

Furthermore, since the lead wire itself becomes stronger, accidents such as accidental stretching or breakage can be reduced. Furthermore, by appropriately selecting the thickness, number, material, or insulation coating of the different wires that serve as reinforcement, it is possible to obtain the specified rotational durability even when using thick core wires, reducing the cost of lead wires. It becomes possible.

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a partially cutaway partial front view of a rotary table A-1 electric water boiler according to an embodiment of the present invention, and FIG. 2 is a partially cutaway tenth view. 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-stage 1 shape, and a donut-shaped flat plate 3 is attached to the middle part by a presser metal fitting 3a. A plurality of shaped container support plates 4 are appropriately attached. A cover 5 that covers the lower end opening of the water heater main body 2 is connected to the container support plate 4 by a screw 8 provided on a disk-shaped holding plate 7 inside the protruding link 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 space 9 approximately in the center between the cover 5 and the bottom of the container 1. Furthermore, on the lower surface near the outer periphery of the cover 5,
A ring groove 11 is provided, and a projection 13 of a substantially dish-shaped rotary table 12 is fitted into this ring groove 11. Further, a post 14 is provided at the center of the retaining plate central portion 7a of the cover 5, and is provided with a post 14 that projects downward and has a recessed portion in the center. The turntable 12 is rotatably attached to the cover 5 by means of a screw 16. 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 ring groove 11. Moreover, the cover 5 is attached to the rotary table 12 by the corrugated circular washer 17.
The same power is maintained properly, and the gap between the two is also maintained well.

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 fixed to a part near the outer periphery of the rotating table 12 in the compartment 18. The terminal bar 21 is attached to the outside, and the terminal plate 22 is attached to the inside.
and the terminal board 22 are electrically coupled.

On the other hand, multiple lead wires 23 coming out from the hot water temperature control device 10
is a through hole 2 provided in a part of the central portion 7a of the retaining plate of the cover 5.
It is taken out below from 4. This through hole 24 has a minimum size necessary for wiring the lead wire 23. Here, the lead @23 is connected to a lead wire 26 by a connector 25, and the lead wire 26 is further connected to the terminal plate 22 by a set screw 27. Connector 25 is held by guide 28.

By connecting the lead wires 23 and 26 with the connector 25 in this way, when assembling the lead wire 23 can be taken out from the cover 5 and the screws 8 can be tightened (J) to fix the cover 5 to the container support plate 4. , the electric water heater can be assembled easily and firmly.Since the lead wires 26 are short distances connecting the connectors 25 and the terminal plates 22, each of which has a fixed position, the length accuracy is well determined, and as a result, as shown in FIG. The bending of the lead wire 26 can be made in a shape that is convenient for bending, and assembly is easy.Furthermore, the boss 14 on the lower surface of the central part of the retainer plate of the cover 5 also absorbs the bending force of the lead wire 26. The kite pin 29 is used for rotation in the opposite direction and is provided on the lower surface of the support plate center 7a of the cover 5. 31 and 32 are the kite pins for rotation in the opposite direction. That's the center part 7 of the support plate of the cover 5.
a and the corresponding position of the turntable 12, the through hole 24 is located inside, and the terminal block 19 is located outside, so that the BCj is a link and the lead when the cover 5 is rotated. It serves as a guide kite for bending the wire 26, and prevents the lead wire 2G from getting caught or tangled.

When assembling the lead wires 26, one end is first connected to the lead wire 23 with the connector 25, and then stored in the kite 28. The other side is the recess 3 in the center part 7a of the retaining plate of the cover 5.
Connect to terminal block 19 temporarily fixed to terminal block 1, then connect terminal block 1 to terminal block 1.
9 is moved and fixed in a predetermined position on the rotary table 12 with screws 20. Because it is configured like this, the connector 25 can be removed when disassembling, etc., and the internal hot water temperature control device! 1
0 etc. and can be repaired separately.

Here, as shown in FIG. 3, the lead wire 26 has a rigid core 34 made of stainless steel or the like coaxially inserted into a large bundle of core wires 33 made of copper and having a diameter of about 0.051 m for electrical conduction. The outer peripheries of these are covered with an insulating coating material 35 such as rubber. Since the lead wire 26 has the mandrel 34 in its center, the bending radii a and b of the free part in the center, excluding both fixed ends, are the same even when the water heater main body 2 rotates to the left or right. It can always be made quite large, the ratio of the core wire 33 to the bending radii a and b of the lead wire 26 can be increased, and the rotation durability is significantly improved! ] Up.

In addition, by appropriately selecting the thickness and number of core wires 34, even if the thickness of the conventional thin core wire 33 is increased, a predetermined rotational durability can be obtained, and the cost of the lead wire 26 can be reduced. becomes.

Note that the core metal 34 may be made of a non-metallic material such as a nylon wire, and in short, any material may be used as long as it can have a large bending radius. Further, the core metal 34 may be buried in the insulating coating material 35. Furthermore, the material of the insulating coating material 35 may be carefully examined and a material that has the same effect as the material containing the core metal 34 may be used, or the thickness of the insulating liquid F'M35 may be increased or It is also possible to use a material that is made harder and has larger bending radii a and b so as to have the same effect.

According to the electric water heater with a rotary stand of the present invention, the lead wire that is bent during rotation is reinforced with a different wire that is coaxial with the core wire, or the bending radius can be increased. Since the core wire is covered with a removable insulating material, the bending radius of the lead wire can be increased, dramatically improving rotational durability.

Additionally, the lead wires themselves are now more durable, reducing accidents such as accidentally stretching or breaking them.

Furthermore, by appropriately selecting the thickness, number, material, or insulation coating of the core wire, it is possible to obtain the specified rotational durability even if the thin core wire is made thicker, making it possible to reduce the cost of the lead wire. It is.

[Brief explanation of the drawing]

Fig. 1 is a partial cutaway view of the rotary table (1) of the electric water heater according to the present invention, and Fig. 2 is a cutaway view of the rotary table (1) of the electric water heater as seen from below. The bottom view and FIG. 3 are cross-sectional views of the lead wire. DESCRIPTION OF SYMBOLS 1... Container, 2... Water heater main body, 3... Heater, 5... Cover, 7... Holding plate, 10... Hot water temperature control device, 11... Ring groove, 12 ...Rotary table, 13
...Protrusion, 19...Terminal block, 21...Terminal bar, 2
2...Terminal board, 24...Through hole, 25...:'l
connector, 26... lead wire, 33... core wire, 34...
... Core metal, 35... Insulating coating material. Agent Yoshihiro Morimoto

Claims (1)

[Scope of Claims] 1. A water temperature control device is provided in the lower space of a container suspended and supported within the water heater main body, and a cover is provided to cover the lower end of the water heater main body, and is rotatably attached to the lower surface of the cover. A turntable is provided, and a lead wire is connected between a lead wire of the hot water temperature control device that penetrates a part of the cover and is taken out downward, and a terminal block provided near the outer edge of the turntable. ,
An electric water heater with a rotary stand that consists of a lead wire reinforced with a different wire coaxially with the core wire. 2. Insulate the lead wire connected between the lead wire of the hot water temperature control device, which penetrates a part of the cover and takes it out downward, and the terminal block installed near the outer edge of the rotary table, so that it can have a large bending radius. 2. The electric water heater with a rotary table according to claim 1, comprising a lead wire whose core wire is covered with a material.