JPS6333049B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric stove such as an electric fan heater having a vertical quartz tube heater used as a household heating appliance.

Structure of a conventional example and its problems A conventional device for preventing a heater from breaking when an electric fan heater falls over is configured as shown in FIG. That is, the top surface 101a of the main body case 101
A U-shaped front guard line 102 surrounding the front and a U-shaped rear guard line 103 surrounding the outside of the side and back side were attached to the upper part near the top. When the main body case 101 falls, either the front or rear guard wires 102, 103 come into contact with the floor to absorb the shock and prevent it from being violently transmitted to the heater 104. However, after the product falls over several times, the front guard wire 102 and the rear guard wire 103 are deformed and no longer perform their original functions, resulting in the heater cracking.
Also, in terms of appearance, the upper part of the main body case 101 becomes large, which is not preferable.

Purpose of the Invention The present invention solves these conventional drawbacks, and the impact force absorption and restoring properties of the spring effectively prevent the heater from cracking even when the product falls over many times. The purpose is to maintain quality and improve safety.

Structure of the Invention In order to achieve the above-mentioned object, the present invention includes end caps attached to the upper and lower ends of a vertical quartz tube heater unit, and the heads of the end caps are inserted and locked into holes in the bottom of a flat spring. , a positioning leg portion extending at right angles to a spring leg portion extending obliquely is provided on the periphery of the bottom surface portion of the thin plate spring, and the tip of the spring leg portion is brought into contact with the mounting bracket, and the tip of the positioning leg portion is brought into contact with the mounting bracket. This is a device for preventing cracking of a heater for an electric stove, in which the bent portion of the heater is secured to a mounting fitting.

DESCRIPTION OF EMBODIMENTS Examples of the present invention will be described below with reference to FIGS. 2 and 3.

In the figure, reference numeral 1 denotes a main body case of an electric fan heater in the form of a vertically long casing with an open front, inside which there is a vertical quartz tube heater unit 2 and a parabolic reflector whose focal point is at the center of the vertical quartz tube heater unit 2. There are 3. This parabolic reflector 3 is
An air flow path 3a is formed between the main body case 1 and the main body case 1. Conical end caps 4 are attached to the upper and lower edges of the vertical quartz tube heater unit 2,
The head 5 of the end cap 4 is inserted into a hole 8 provided in the bottom 7 of the thin plate spring 6.
The thin plate spring 6 includes spring leg portions 11 that extend obliquely upward from the outer edge of the bottom portion 7 and positioning leg portions 1 that extend upward from both sides of the bottom portion 7.
3, the tip 9 of the spring leg piece 11 contacts a mounting bracket 10 fixed to the main body case 1, and the bent portion 12 at the tip of the positioning leg 13 is locked to the mounting bracket 10. In addition, 14 in the figure is a power switch for turning on and off the operation, 15 is a fan motor for blowing air, which is built in the main body case 1, and the air sucked in as shown by the arrow is sent to the main body case 1 and the parabolic reflector 3. The structure is such that the air passes through the air gap and is discharged from the air outlet 16.

In the above configuration, when the power switch 14 is turned on, the vertical quartz tube heater 2 is energized, and the heat generated therefrom is radiated forward either directly or reflected by the parabolic reflector 3. On the other hand, the air sent by the blowing fan motor 15 is heated while passing between the main body case 1 and the parabolic reflecting plate 3, and is discharged from the blower outlet 16 as warm air.

Here, if the main body case 1 falls down by mistake, the spring plate legs 11 with spring properties of the prevention device attached to both ends of the heater unit will protect the tip 9 from the mounting bracket against the vertical impact. 10, the legs open and close to the left and right to weaken and absorb the impact force, and the spring plate legs 11 and the positioning legs 13, which have spring properties, are able to withstand impacts in the left and right direction.
The heater unit bends due to its many legs and vibrates from side to side at the center of the heater unit, but it absorbs the impact force and absorbs the impact force when it falls, and prevents it from spreading to the vertical quartz tube heater unit 2. To prevent.

Although this embodiment describes an electric stove with a fan, it goes without saying that the same effect can be achieved in a so-called electric stove that does not have a built-in fan motor.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention, an end cap provided at the end of a heating element such as a vertical quartz tube heater is held by a bottom plate portion of a thin plate spring, and the outer edge of this bottom portion is held by a bottom plate portion of a thin plate spring. The tip of the spring plate leg that spreads diagonally upward in all four directions touches the mounting bracket, and the bent part of the tip of the positioning leg that stands up from the outer edge of the bottom part is suspended on the mounting bracket, so it can withstand repeated falls. The impact force absorption and restoring properties of the thin plate springs effectively prevent cracking of the heater, which is highly effective in maintaining quality and improving safety.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional electric fan heater, FIG. 2 is a sectional view of an electric fan heater according to an embodiment of the present invention, and FIG. 3 is a sectional view of a heater cracking prevention device. 2... Vertical quartz tube heater unit, 4... End cap, 6... Thin plate spring, 7... Bottom part of thin plate spring, 10... Mounting bracket, 11... Spring plate leg of thin plate spring, 13... Legs for positioning thin leaf springs.

Claims (1)

[Claims] 1 Attach end caps to the upper and lower ends of the vertical quartz tube heater unit, insert and lock the heads of these end caps into the holes in the bottom of the flat spring, and attach the end caps to the bottom of the flat spring. A positioning leg is provided that extends at right angles to a spring leg extending in the shape of a shape, the tip of the spring leg is brought into contact with a mounting bracket, and the bent portion of the tip of the positioning leg is locked to the mounting bracket. An electric stove heater crack prevention device.