JPH0632031Y2 - Electric water heater - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention relates to an electric water heater used in general households, and relates to a discharge pipe for extracting hot water and a case for covering the discharge pipe, and particularly to a discharge pipe for the case. The present invention relates to locking means.

2. Description of the Related Art Conventionally, the protruding pipe 50 of this kind of electric water heater has a third
As shown in FIGS. 5 to 5, the projection 54 of the discharge pipe 50 is hooked and locked to the projection 53 provided on the separate support tool 52 fixed in the box-shaped case 51. It should be noted that this locking is performed when the case 51 is fixed to the housing 55 in the process of completing the assembly as shown in FIG.
This is to prevent 0 from dropping out.

Further, in this conventional example, since the display lamp 56 and the operation switch 57 of the electric water heater happen to be in the case 51, the support tool 52 for covering them is required, and the support tool 52 is integrated with the support tool 52. Since the projecting piece 53 is provided, the supporting tool 52 is not required.

However, when the display lamp 56 and the operation switch 57 are provided in the lower housing 58, the discharge pipe 50 and the support tool 52 for locking are required separately from the case 51, so management becomes complicated and cost is reduced. It was also up.

The present invention solves the above problems, and an object of the present invention is to provide an electric water heater having a discharge pipe holding means with a reduced number of parts and a simple structure.

Means for Solving the Problems In order to achieve the above object, the present invention provides a shelf plate integrated with a case without providing a separate support for preventing the discharge pipe from falling off, and a flange plate of the discharge pipe on the shelf plate. It is designed to be hooked.

The present invention has the above-described structure, and when the discharge pipe is inserted into the hole at the bottom of the case and assembled, the flange plate of the discharge pipe is forcibly inserted slightly downward from the shelf plate provided near the bottom of the case. The flange plate is held, and eventually the protruding pipe is prevented from falling off the case.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

As in the case of the conventional example shown in FIG. 5, the electric water heater body has a discharge pipe 2 in a case 1 in which hot water taken out from a water heater having a heater at the bottom is housed in a cylindrical housing and is provided above the housing. It is designed to discharge more.

The case 1 has a substantially box-like shape having walls except for the surface 3 and the upper surface 4 which are in contact with the housing, and is made of a molded product such as plastic.

Further, the lower discharge outlet side of the discharge pipe 2 which is directed obliquely downward has a slightly conical shape, and a rectangular flange plate 5 is formed on the outer surface of the middle straight portion of the discharge pipe 2 at a right angle to this axis. It is provided.

In addition, each ridge of the box-shaped case 1 is rounded so that no deformation occurs during molding. Bottom 6 of case 1
A hole 7 is provided in a part of the above, and a shelf plate 8 is provided on the inner side surface near the bottom 6 substantially in parallel with the flange 5.

The shelf plate 8 is provided so as to be slightly above the flange plate 5, and the bulge plate 5 is located inside the case 1. The discharge pipe 2 has a conical outlet slightly outside the case 1. It is only exposed.

When viewed from the axial center direction of the discharge pipe 2, the inner end 14 of the shelf plate 8 is slightly closer to the axial center side than the outer shape of the flange plate 5.

Numerals 9, 10, 11, 12, and 13 are claws provided in the opening of the case 1, whereby the case 1 is locked to the housing.

Here, in order to assemble the discharge pipe 2 into the case 1, first, the conical portion on the outlet side of the discharge pipe 2 is inserted into the hole 7 of the case 1 and the discharge pipe 2 is pushed downward, so that the flange plate 5 causes the shelf plate 8 to move. Hit against. When further pushed in, the flange plate 5 becomes the shelf plate 8
And goes under the shelf plate 8. At this point, the flange plate 5 hits the rib 15 of the claw 11 and stops descending.

For this reason, the flange plate 5 is sandwiched between the shelf plate 8 and the ribs 15, and the discharge pipe 2 has some play, and the case 1
Locked inside.

In this way, the case 1 integrated with the discharge pipe 2 is locked to the case by the claws 9, 10, 11, 12, and 13.

In the case of the present invention, the overlapping relationship between the flange plate 5 and the shelf plate 8 viewed from the axis is on the side of the case 1,
The same relationship can be made on the front side of the case 1. However, in this case, the shelf board 8 is provided on the inner surface of the front surface of the case 1, and when the case 1 is molded, molding distortion such as sink marks occurs due to this shelf board, and the case 1 becomes unsightly, so it is necessary to avoid it. There is.

Advantageous Effects of Invention According to the present invention as apparent from the above-described embodiments, the flange plate of the discharge pipe is locked by the integrated shelf plate provided on the inner surface of the side surface of the case. It has a simple structure without the need for supporting equipment, etc., and is easy to manage and the cost has been reduced.

Further, since the shelf board is provided on the inside of the side surface of the case and on the rounded part of the ridge, the appearance is improved without the occurrence of sink marks when the case is molded.

Since the discharge pipe is held by the case in this way, the case is attached to the housing, and the discharge pipe does not fall off, which facilitates the assembly.

[Brief description of drawings]

FIG. 1 is a rear view of a case of an electric water heater according to an embodiment of the present invention, FIG. 2 is a sectional view of the same side, FIG. 3 is a rear view of the case of a conventional electric water heater, and FIG. FIG. 5 is a side sectional view of the electric water heater. 1 ... Case, 2 ... Discharge pipe, 5 ... Flange plate,
6 ... bottom, 7 ... hole, 8 ... shelf, 14 ... inner end.

Claims (1)

[Scope of utility model registration request] 1. Hot water from a boiling water container housed in a housing is taken out from a discharge pipe in a case provided above the housing, and is stored in a housing of the discharge pipe whose tip is exposed through a hole at the bottom of a box-shaped case. A flange plate is provided on the outer surface of the discharge pipe substantially perpendicular to the axis of the discharge pipe, and a shelf plate is provided on the inner surface of the side surface near the rounded bottom of the case substantially parallel to the flange plate, and the shelf plate is more than the flange plate. When the discharge pipe is mounted inside the case with the inner end of the shelf plate closer to the axis than the outside diameter of the flange plate and slightly above, the flange plate is locked between the shelf plate and the inner surface of the bottom of the case. An electric water heater that prevents the discharge pipe from falling off.