JPH0242964Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to an electric stove with a compact structure that can be used in accordance with the required number of heating units and the environment, and is suitable for multiple purposes.

(Prior Art) Electric stoves have recently become popular as clean heaters that have a lightweight and portable structure and do not emit any combustion exhaust gas.

This is because far-infrared heaters that emit electromagnetic waves with strong penetrating power have come to be used in place of so-called electric heaters such as nichrome wires, and these heaters have the advantage of greatly reducing running costs.

By the way, a typical conventional electric stove of this type has a structure disclosed in Japanese Utility Model Application Publication No. 59-103105, in which it is rotatably supported on a stand base 1' in an upright position. By repeatedly rotating and swinging the heater body 3' at an appropriate angle, heat rays can be emitted over a wide range of about 70 degrees.

(Problems to be solved by the invention) In the conventional electric stove mentioned above, the heater body 3' stands vertically and is fixed in a position facing directly to the side, and cannot change direction diagonally upward or diagonally downward. Of course, since it cannot be turned horizontally at 90 degrees, there are restrictions on how it can be used, such as heating a small group of people, such as two people sitting close together on tatami mats. It was an inconvenience.

The present invention has been developed in view of the fact that conventional electric heaters have the disadvantage of being restricted in the usage conditions, and it is desired to improve the problem. By creating a structure that has both a horizontal spread direction switching function and an elevation adjustment function, the purpose is to enable multipurpose local heating with a single unit and contribute to promoting the spread of electric heaters.

(Means for Solving the Problems) The present invention provides an electric stove capable of achieving the above object, which includes a stand base 1 serving as a support base, and a stand base 1 serving as a support base. It is composed of a swinging shaft 2 provided on a stand 1, a swinging drive device 4 similarly attached to the stand base 1, a heater main body 3 which is the part that performs heating, and a heater angle adjustment mechanism 5.

The swing base shaft 2 is rotatably provided around a swing center shaft 14 provided on the stand base 1.

The swing drive device 4 is composed of driving members such as a motor and a cam, and is formed into a mechanism that repeatedly rotates the swing base shaft 2 at a predetermined swing angle, for example, 70 degrees.

The heater main body 3 is formed into an elongated heater having an elongated heater 6 such as a quartz tube heater and a reflecting plate 7 provided at the rear of the heater 6.

The heater angle adjustment mechanism 5 has two rotating shafts that are perpendicular to each other, and the first shaft 8 rotates the heater main body 3 in two directions, one in the vertical direction and the other in the horizontal direction.
It is a rotatably supported shaft that can be fixed in position, and is provided, for example, in relation to the rear side of the heater body 3 at a position that substantially equally divides the longitudinal side of the heater body 3.

In addition, the second shaft 9 directs the heater body 3 diagonally upward,
A shaft that is supported so as to be tilted upward and downward so that it can be fixed diagonally downward and at any inclination angle therebetween,
It is provided interposed between the swing base shaft 2 and the first shaft 8.

(Function) In the present invention, by arranging the heater main body 3 vertically with its longitudinal side vertically positioned and repeatedly rotating the swinging shaft 2, it is possible to provide local heating to two people in the vicinity.

In addition, by rotating the heater main body 3 from the vertical position to a horizontal position by rotating it by 90 degrees and performing swinging motion, local heating for three people nearby is possible.

Furthermore, by adjusting the heater body 3 diagonally downward or diagonally upward in a vertical or horizontal arrangement, it is possible to locally heat the feet or the hand.

(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

1 to 5, reference numeral 1 denotes a stand base with a disc-shaped pedestal part 11 and a truncated quadrangular pyramid-shaped cylinder placed on the top surface of the pedestal part 11 and fixed integrally. The cylinder body 12 is made up of a circular cover 13 that loosely fits into a circular opening provided on the top surface of the cylinder body 12.

The internal space of the stand base 1 contains a swinging shaft 2 and a swinging drive device 4, and a lower part of a frame 10 is inserted in connection with the swinging shaft 2. The base shaft 2 and the swing drive device 4 are completely hidden from view from the outside, and only the frame 10 protrudes from the stand base 1.

The swinging base shaft 2 is rotatable around a swinging center shaft 14 which has a lower end supported and fixed by a bearing hole of a pedestal 11 and a bearing hole of a pedestal 20 fixed to the pedestal 11. The illustrated example is a combination of an L-shaped frame mounting portion 15 having a through-round hole into which the swinging center shaft 14 is fitted, and a bracket-shaped cam cylinder portion 16 also having a through-hole. The structure is as follows.

Therefore, the frame mounting base part 15 has a small hole drilled in the lower surface of the horizontal plate part which is made to project horizontally, and a chip 21 which is provided with elastic force on the protruding side by a spring is inserted into the small hole. On the other hand, on the upper surface of the cam cylinder section 16 that is in sliding contact with the lower surface of the horizontal plate section, there is a circle with the center of the through hole as the center and the same radius as the tip 21. A plurality of chip engagement holes 22... (see Fig. 3) are bored at positions on an arc drawn with a dimension equal to the distance from the center of the through-hole, and these chip engagement holes 22... Said chip 21 on any of
The tip can be elastically engaged.

The thus configured chip 21 and chip engagement hole 22...
By engaging with each other, the frame mounting base part 15 and the cam cylinder part 16 do not become a sliding pair but are integrally connected with respect to rotational movement about the swing center shaft 14. In this case, when an external force that overcomes the elastic force is applied to the frame mounting base part 15 as a braking force, the chip 21 will rotate in the chip engagement hole 2 that is being engaged.
2 and engages with the adjacent chip engagement hole 22, the phase shift relationship between both members 15 and 16 changes, and in the illustrated example, the phase shift angle can be changed by up to 60 degrees. , five chip engagement holes 22...
They are placed at 1.5° intervals.

Note that the swing center axis 14 is connected to the cylinder body portion 12.
It is fixed upright coaxially with the central axis of the.

Next, the oscillating drive device 4 includes a motor 17 with an integrated reducer fixed to the pedestal 20 and having an output shaft directed vertically upward, a lever-shaped cam 18 fitted to the output shaft, and the cam 18. A connecting plate 19 that extends between the cam cylinder portion 16 and is rotatably linked to each other via pins is used as an element member,
When the motor 17 is energized, the cam cylinder portion 16 is repeatedly rotated through a rotation angle of approximately 70° about the central swing axis 14.

Naturally, the frame mount part 15 repeatedly rotates integrally with the cam cylinder part 16, which rotates repeatedly in this way, but in the frame mount part 15, the cam cylinder part 16 rotates repeatedly, parallel to the swing center axis 14, and offset. The lower end of the frame 10, which is a rectangular tube, is fixed with screws to the vertical plane formed by the center of the frame, and the frame 10 is placed eccentrically and parallel to the swinging center axis 14, and stands upward from the stand base 1. It is set up.

Therefore, the frame 10 repeatedly moves in an arc along a virtual cylindrical surface centered around the central swing axis 14 at a rotation angle of about 70 degrees.

In FIGS. 1 to 4, reference numeral 3 denotes a heater body, in which a tubular heater 6 is installed inside an elongated casing 23 having a rectangular cross-section.
Furthermore, it is a front-radiating heater body with a gutter-shaped reflector 7 disposed behind the heater 6, and a switch 24, an indicator light 25, and a capacity adjustment knob 26 are provided at one longitudinal end. Department has been set up.

The heater 6 has a structure in which a nichrome wire is embedded in a metal tube whose surface is coated with ceramic, and is formed into a heater capable of emitting a large amount of far-infrared rays having a high thermal effect.

A heater angle adjustment mechanism 5 is attached to the rear part of the heater body 3 at a position that roughly divides the longitudinal side thereof into equal parts, and the heater body 3 is connected to the upper end of the frame 10 via this adjustment mechanism 5. It's dressed up.

As shown in FIGS. 3 and 4, the heater angle adjustment mechanism 5 includes a disk 27 fixed to the rear portion of the heater body 3 with screws, and the disk 27
A pin 8 is inserted into a hole provided in the center of the disk 27 and fixed by welding to the disk 27, and a hole provided in the center of the bottom part is loosely fitted into the pin 8, so that both legs protrude backwards. Bracket 28, this bracket 2
In order to keep the bottom of the bracket 28 in strong pressure contact with the disk 27 at all times, a coil spring 29 is fitted and locked onto the pin 8, and holes 34, 34 ( 10), and a pair of angle members 30, 30 fixed oppositely to the upper end of the frame 10, with both ends of the pin 9 supported, respectively. The heater angle adjustment mechanism 5 is located approximately at the upper extension of the oscillating central axis 14, and distributes the heater body 3 forward and the frame 10 rearward, thereby adjusting the center of gravity of the movable portion of the oscillating central axis 14. It is arranged so that it can be stably supported upwards.

As shown in FIG. 6 and FIG.
Four small holes 31 to be burred are drilled at equally divided positions, and stopper pins 32 are inserted at appropriate locations.
is fixed in a protruding manner.

On the other hand, the bracket 28 has a total of four hemispherical protrusions 33 protruding from the bottom that slides into contact with the disc 27 and can fit into the small hole 31 at positions symmetrical to the small hole 31. , further, two abutting portions 35, 35 that abut on the stopper pin 32,
The end portion near the boundary between the bottom portion and the leg portion is provided with a rotation angle of 90°.

The bracket 28 further has an arc-shaped elongated hole 36 formed in one leg thereof with the hole 34 as the center of rotation, and a bolt 37 (see FIG. 4) is inserted through this elongated hole 36.

The bolt 37 has a shaft portion that contacts the bolt head formed into a square body that can fit into the elongated hole 36, and a threaded portion at the tip of the bolt that is bored into one of the opposing angle members 30. It is inserted through the hole, and a nut knob 38 (see FIG. 3) is screwed onto the tip of the screw.

The heater angle adjustment mechanism 5 having the above structure is
When the heater body 3 is rotated 90 degrees around the pin 8 from a vertically placed state where the longitudinal side is vertical, the longitudinal side becomes horizontal, as is clear from the engagement relationship between the small holes 31 and the protrusions 33. It is possible to reliably shift to the horizontal state and maintain that state, and the stopper pin 32 and the contact portion 3
5, it cannot be rotated any further in the same direction.

Also, if you want to change from horizontal to vertical, just rotate it 90 degrees in the opposite direction.
It is possible to reliably return to the initial state in which the operating section is located upward.

Thus, the pin 8 functions as a first shaft 8 that rotatably supports the heater main body 3 so that its longitudinal side can be fixed in two positions, vertical and horizontal.

On the other hand, if the nut knob 38 is loosened and the heater body 3 is rotated around the pin 9, the rotation angle range determined by the length of the elongated hole 36, for example, 35 degrees, upwards by 30 degrees, and downwards by 30 degrees. It can be oriented and fixed at any angle within a 5° range.

Note that fixing can be easily done by tightening the nut knob 38.

Thus, the pin 9 supports the heater main body 3 so that it can be tilted up and down so that it can be oriented diagonally upward, diagonally downward, and at any inclination angle in between.
It functions as an axis 9 and is perpendicular to the first axis 8 .

Therefore, a smooth swinging motion is transmitted through the swinging shaft 2 and the frame 10 in any state, such as vertically placed, horizontally placed, diagonally upward, sideways, and diagonally downward.

By the way, when the electric stove is performing an oscillating motion, the frame 10, which is eccentric with respect to the oscillating central axis 14, naturally moves along a cylindrical surface centered on the oscillating central axis 14.

Therefore, in the illustrated example, a circular cover 13 through which the frame 10 is penetrated is loosely fitted in a lid-like manner into a circular opening provided on the top surface of the cylinder body 12 with the swing center axis 14 as the center of the circle. Along with arranging
Since the structure is such that a square hole is formed at a predetermined position to pass through the frame 10, the cover 13 can rotate integrally with the frame 10 to keep the circular opening closed at all times. Therefore, by allowing the cover 13 to cover the top surface of the cylinder body 12 while the frame 10 moves smoothly in an arc, it is possible to prevent foreign matter such as dust from entering the stand base 1. However, it also brings about favorable results in terms of design.

(Effects of the invention) As detailed above, in the present invention, the long and slender heater body 3 can be placed in two different positions, vertically vertically and horizontally and horizontally, and can be oscillated, depending on the purpose of use. You can use narrow-angle and wide-angle.

Furthermore, when placed vertically or horizontally, it can be swung diagonally upwards, horizontally, and diagonally downwards, providing greater flexibility in foot heating, hand heating, and local heating. Its practical value is truly great because of its excellent flexibility in terms of methods.

[Brief explanation of the drawing]

1 to 3 are a partially omitted right side view of an example of the present invention, a sectional view taken along the line - in Fig. 1, a sectional view taken along the - line in Fig. 1, and Figs.
The figures are a schematic front view and a schematic right side view, FIGS. 6 and 7 are a front view and a plan view of the first shaft part of a heater angle adjustment mechanism according to an example of the present invention, and FIGS. 8 to 10. The figures are a plan view, a right side view and a front view of the second shaft part in the heater angle adjustment mechanism, and the 11th
The figure is a cross-sectional view of a conventional electric stove. 1...stand base, 2...swing axis, 3...
. . . Heater main body, 4 . . . Oscillating drive device, 5 . . . Heater angle adjustment mechanism, 6 .

Claims (1)

[Scope of utility model registration request] A stand base 1, a swing base shaft 2 rotatably provided on the stand base 1 about a swing center shaft 14, and a swing base shaft 2 attached to the stand base 1,
A heater body 3 having a swing drive device 4 for repeatedly rotating the swing base shaft 2 at a predetermined swing angle, a long and narrow heater 6 such as a quartz tube heater, and a reflection plate 7 provided correspondingly to the rear of the heater 6. and a heater angle adjustment mechanism 5 interposed between the central part of the back surface that divides the length of the heater body 3 into approximately equal parts and the swing axis 2, and the heater angle adjustment mechanism 5 includes: A first shaft 8 rotatably supports the heater body 3 so that its longitudinal side can be fixed in two positions, vertical and horizontal, and the heater body 3 is tilted diagonally upward, diagonally downward, and any inclination between these An electric stove characterized by having two rotating shafts orthogonal to a second shaft 9 that is supported so as to be tiltable and vertical so as to be fixed at an angle.