JP2016080224A - Electric heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric heater in which heating capacity is lowered when used in a tilted state to a depression angle side.SOLUTION: An electric heater 1 has a body case part 2 including a heater 21 which can vary heating capacity and a support part 3, the body case part 2 and the support part 3 are connected by a rotary shaft unit 4, and the body case part 2 is rotatable to a depression angle side by the rotary shaft unit 4. It also includes: a micro switch 19 for detecting that the body case part 2 has rotated to the depression angle side; and control means 16 which, when the micro switch 19 has detected the depression angle of the body case part 2, in the case where the heating capacity of the heater 21 is equal to or greater than predetermined capacity, forcibly lowers the heating capacity to below the predetermined capacity.SELECTED DRAWING: Figure 11

Description

  The present invention relates to an electric heater, and more particularly to an electric heater that supports a heater so as to be rotatable in a depression direction.

  2. Description of the Related Art Conventionally, there is known an electric stove that can be adjusted in a downward depression angle direction in order to warm the feet intensively from a vertical state in which a main body case portion provided with a heater faces the front (for example, Patent Document 1).

Japanese Patent No. 4353012

  By the way, in this conventional electric stove, when the main body case portion is used while being tilted in the depression direction, there is a problem that the floor surface is burnt, even though it is used for a long time with a high heating capacity. .

  This invention pays attention to this point, and in order to solve the above-mentioned problem, in particular, the configuration has a main body case portion and a support portion provided with a heater capable of changing the heating capacity, and the main body case portion and the support portion are provided. In an electric stove that is connected by a rotary shaft unit, and the main body case portion can be turned to the depression side by the rotation shaft unit, the fact that the main body case portion has turned to the depression side is changed from the ON state to the OFF state. Control means for forcibly reducing the heating capacity to below the predetermined capacity if the heating capacity of the heater exceeds the predetermined capacity when the micro switch detects the depression angle of the main body case portion. It is equipped with.

As described above, according to the present invention, when the micro switch detects that the main body case portion is tilted in the depression direction, if the heating capacity of the heater is equal to or greater than the predetermined capacity, the heating capacity is forcibly reduced to less than the predetermined capacity. Since it is lowered, the floor surface is prevented from being burnt even if heated for a long time in a depression angle, and can be used safely and with peace of mind.
In addition, this micro switch detects by changing the depression angle from the ON state to the OFF state, so even if the micro switch is disconnected or the lead wire is cut off, it can be switched to the side that reduces the ability. It is safe and easy to use.

It is a perspective view which shows the external appearance of the electric heater which concerns on embodiment of this invention. It is a side view of FIG. 1 for demonstrating the attachment state of the rotating shaft unit which concerns on embodiment of this invention. It is a disassembled perspective view which shows the structure of the rotating shaft unit which concerns on embodiment of this invention. It is the perspective view which looked at the rotating shaft unit which concerns on embodiment of this invention from the back surface. The state of the depression angle position in the rotating shaft unit which concerns on embodiment of this invention is shown, (a) is a top view, (b) is a side view. It is sectional drawing for demonstrating operation | movement of the rotating shaft unit which concerns on embodiment of this invention, (a) is the BB sectional drawing of FIG.7 (b) in an elevation angle position, (b) is a figure in a depression angle position. FIG. 5B is a cross-sectional view taken along the line AA in FIG. 5B, and FIG. 7C is a cross-sectional view taken along the line CC in FIG. It is a side view for demonstrating operation | movement of the rotating shaft unit which concerns on embodiment of this invention, (a) shows a depression angle position, (b)-(e) shows an elevation angle position. It is a top view of the ability adjustment knob which concerns on embodiment of this invention. It is a block diagram of the electric circuit which concerns on embodiment of this invention. It is a principal part perspective view of the rotating shaft unit of the microswitch ON state which concerns on embodiment of this invention. It is a principal part perspective view of the rotating shaft unit of the microswitch OFF state which concerns on embodiment of this invention.

The configuration of the electric heater 1 according to the embodiment of the present invention will be described in detail with reference to FIGS. 1 to 7 as appropriate.
As shown in FIG. 1 and FIG. 2, the electric stove 1 is fixed to a main body case portion 2 having two heaters 21, a support portion 3 that supports the main body case portion 2, and an upper portion of the support portion 3. And a rotating shaft unit 4 (see FIG. 2) for connecting the case portion 2 and the support portion 3 to each other.

  As shown in FIG. 3, the rotating shaft unit 4 includes a rotating shaft mounting plate 51 to which the rotating shaft 5 is mounted when the main body case portion 2 rotates vertically and horizontally, and an angle adjusting plate support 6 fixed to the support portion 3. And an angle adjusting plate 8 pivotally supported by the angle adjusting plate support 6 so as to be rotatable in the elevation angle direction and the depression angle direction about the elevation angle depression shaft 81.

  The rotating shaft 5 is threaded on the outer periphery of its tip portion, and presses the angle adjusting plate 8 against the rotating shaft mounting plate 51 against the tip portion of the rotating shaft 5 while passing through the rotating shaft hole 82a of the angle adjusting plate 8. The rotary shaft mounting plate pressing spring 52 is fitted, the washers 53 and 54 are further fitted, and the rotary shaft mounting plate nut 55 is engaged with the threaded portion of the outer periphery of the rotary shaft 5 to rotate the rotary shaft mounting plate 51 freely. It is attached to the angle adjustment plate 8.

The angle adjusting plate 8 has a U-shaped cross section, and includes a front part 82 formed with a rotary shaft hole 82a through which the rotary shaft 5 passes, and a fan-like part that is a side part extending in the axial direction from one end side of the front part 82. And an angle adjusting portion 84 having a fan shape extending in the axial direction from the other end side of the front portion 82.
The angle adjusting portion 83 is formed with an elevation angle adjusting hole 83a and a depression angle adjusting hole 9a. The angle adjusting portion 84 is formed with an elevation angle adjusting hole 84a.
In addition, although the electric wire fixing means (not shown) is attached to the angle adjustment part 83, detailed description is abbreviate | omitted.

The angle adjustment plate support 6 has a U-shaped cross-section and a rotation shaft hole 61 through which the rotation shaft 5 penetrates. The angle adjustment plate 8 is supported by the elevation angle depression shaft 81 so that the angle can be adjusted.
The angle adjustment plate support 6 has a U-shaped cross-section when the angle adjustment plate support portion 63 is formed by bending both ends of the back surface portion 62 where the rotation shaft hole portion 61 is formed at a substantially right angle. An angle adjusting portion through-hole 64 through which the angle adjusting portion 83 of the angle adjusting plate 8 passes is formed at a bent portion between the back surface portion 62 and the angle adjusting plate support portion 63. A shaft support portion 63 a that receives the elevation angle depression shaft 81 is formed on the angle adjustment plate support portion 63.

<Configuration of elevation angle adjustment>
The angle adjustment portion 83 of the angle adjustment plate 8 has elevation angle adjustment holes 83a (83a1, 83a2, 83a3, 83a4) for holding the elevation angle of the angle adjustment plate 8 at several angles. Are formed at a distance of a turning radius R1 (see FIG. 5B).

The elevation engaging member urging means 80 is a means for urging the elevation adjusting hole 83a from the inside of the angle adjusting portion 83 to the elevation adjusting hole 83a. And a ball holding portion 85 that is urged and held by a spring 85a.
In the elevation angle adjusting hole 83a (83a1, 83a2, 83a3, 83a4), the ball 85b accommodated in the ball holding portion 85 is urged from the inside of the angle adjusting portion 83 by a spring 85a.
The ball holding portion 85 is attached to the angle adjustment plate support portion 63 of the angle adjustment plate support 6 at two places, an upper portion and a lower portion, by ball holding portion attachment screws 85c and 85c (see FIG. 6A).

  Specifically, the angle adjustment plate 8 is rotatably supported by the angle adjustment plate support 6 in a state where the angle adjustment portion 83 is passed through the angle adjustment portion through hole 64 of the angle adjustment plate support 6. The ball holding portion 85 is attached to the angle adjustment plate support 6 in a state where the ball 85b is positioned inside the angle adjustment plate support portion 63 so as to fit into the elevation angle adjustment holes 83a (83a1, 83a2, 83a3, 83a4). It is fixed.

  In the ball holding portion 85, an upper ball holding portion mounting screw 85c is inserted from the upper screw insertion hole 63b of the angle adjusting plate support portion 63, and passes through the ball holding portion hole 85d through a hollow spacer 85e. The ball holding portion 85 is engaged with the threaded groove 85f. The lower ball holding portion mounting screw 85c is inserted from the lower screw insertion hole 63c of the angle adjusting plate support portion 63 and is directly engaged with the threaded groove 85f of the ball holding portion 85 via a hollow spacer 85e.

  The angle adjusting unit 84 and the ball holding unit 86 disposed in the angle adjusting unit 84 are paired in the same manner as the angle adjusting unit 83 and the ball holding unit 85 disposed in the angle adjusting unit 83 in adjusting the elevation angle. Since the configuration is the same, the same reference numerals are given and the detailed description is omitted.

  The elevation angle depression shaft 81 has one end formed in a bowl shape, and the other end has a tip for an elevation depression angle shaft formed on one of the shaft support portions 63 a formed on the angle adjustment plate support 6 on the angle adjustment portion 84. By passing through the hole 84c and passing through the elevation depression shaft shaft hole 83c formed in the angle adjusting portion 83, the tip of the shaft projects into the other shaft support portion 63a, and the shaft push nut 81a is attached to the projected tip. It is to be incorporated.

  The adjustment of the elevation angle is performed by setting the elevation angle position by the balls 85b urged by the ball springs 85a being fitted into the elevation angle adjustment holes 83a (83a1, 83a2, 83a3, 83a4) formed in the angle adjustment unit 83. It can be done. The state in which the ball 85b is engaged with the elevation angle adjusting hole 83a (83a1, 83a2, 83a3, 83a4) is referred to as an elevation angle position in the rotary shaft unit 4.

  The elevation angle position is set as appropriate. For example, in consideration of its own weight acting on the main body case portion 2 (see FIG. 2), the main body case portion 2 (see FIG. 2) of the elevation angle adjusting hole 83a1 faces substantially front. The first elevation position (see FIG. 7B) set as described above. The elevation angle adjustment hole 83a2 is the second elevation angle position (see FIG. 7C), the elevation angle adjustment hole 83a3 is the third elevation angle position (see FIG. 7D), and the elevation angle adjustment hole 83a4 is the fourth elevation angle. Position (see FIG. 7E).

  7B to 7E show the elevation angle position of the rotary shaft unit 4 in which the spherical body 85b is engaged with the elevation angle adjustment holes 83a1, 83a2, 83a3, and 83a4, respectively. 2) is supported by the support portion 3, the elevation angle of the main body case portion 2 is about 5 degrees below (the depression angle direction) the elevation angle position of the rotary shaft unit 4 due to its own weight. Is set to

<Configuration of depression adjustment>
The included angle engaging body urging means 9 for adjusting the included angle includes an included angle adjusting hole 9a formed in the angle adjusting portion 83, and a spherical body 91 engaged with the included angle adjusting hole 9a from the outside of the angle adjusting portion 83. And a leaf spring 92 for urging the spherical body 91 from the outside of the angle adjusting portion 83 to the depression angle adjusting hole 9a.

The depression angle adjusting hole 9a is disposed at a distance of a turning radius R2 larger than the turning radius R1 of the elevation angle adjusting hole 83a from the elevation angle depression angle shaft 81.
The leaf spring 92 includes a through hole 92a through which the upper ball holding portion mounting screw 85c for fixing the ball holding portion 85 passes, a holding hole 92b for supporting the spherical body 91, and an insertion hole 92c for the fixing screw 93. I have.
A spherical body support hole 63 d that supports the spherical body 91 is formed in the angle adjustment plate support portion 63 of the angle adjustment plate support 6.

With this configuration, as shown in FIG. 6B, the spherical body 91 is urged inward by the leaf spring 92 from the outside of the angle adjusting plate support portion 63 while being supported by the spherical body support hole 63d. Yes. The inside of the spherical body 91 is engaged with a depression angle adjusting hole 9a formed in the angle adjusting portion 83, so that the depression angle position in the rotary shaft unit 4 is set (see FIG. 7A). ).
In the present embodiment, the pressing hole 92b for supporting the spherical body 91 is provided in the leaf spring 92, but the present invention is not limited to this, and the pressing hole 92b is formed in consideration of the manufacturability and rigidity of the leaf spring. It does not have to be provided.

The depression angle position in the rotary shaft unit 4 means a state in which the spherical body 91 is engaged with the depression angle adjusting hole 9a.
7A shows the depression position of the rotary shaft unit 4 in which the spherical body 91 is engaged with the depression adjustment hole 9a. In the use state where the main body case section 2 is supported by the support section 3, FIG. The depression angle of the main body case portion 2 is increased to about 5 degrees by its own weight.

  On the other hand, as shown in FIG. 6C, in a state where the spherical body 91 is not engaged with the depression angle adjusting hole 9a, the inner side of the spherical body 91 remains in contact with the outer side surface of the angle adjusting portion 83. The spherical body 91 is urged inward by a leaf spring 92 from the outside of the angle adjusting plate support 63 while being supported by the spherical body support hole 63d.

  10 is an ability adjustment knob that is provided on the upper surface of the main body case 2 and adjusts the power to the two heaters 21 and adjusts the heating ability in 10 steps from weak 1 to strong 10. Along with the power display unit 11 provided at the lower part of the main body case unit 2 for displaying the state of the heating capacity by the capability adjusting knob 10, the operation unit substrate 12 is connected. The power board 14 provided with the heater 21 and the swing motor 13 is also connected through the power supply circuit 15.

  Reference numeral 16 denotes a control means comprising a microcomputer provided in the operation unit board 12, and a thermistor switch 17 that detects the overturn of the electric stove 1 and stops it completely, and the thermistor that detects the abnormal overheating of the electric heater 1 and stops it completely. 18 and a micro switch 19 that detects that the main body case portion 2 has turned to the depression angle side are connected to control the heater 21 and the swing motor 13.

  The micro switch 19 is fixed to the angle adjustment plate support 6, and the main body case portion 2 is in a state other than the depression state by the pressing plate 20 fixed to the rotary shaft mounting plate 51 attached to the back surface of the main body case portion 2. The switch portion of the micro switch 19 is pressed by the R-shaped portion at the tip of the pressing plate 20 to maintain the ON state. On the contrary, when the depression angle is tilted, the pressing of the pressing plate 20 is released and released, and this is turned OFF. It is determined that the depression angle is tilted in the OFF state, the control means 16 first starts counting, and the depression angle state is determined with a count of 30 seconds. If it is 600 watts or more, the heating capacity is forcibly reduced to 500 watts of the dial 5 which is less than 600 watts less than the dial 6 and the floor surface is burnt. This decrease in heating capacity is displayed in real time on the power display unit 11. Further, when the depression state is released, the microswitch 19 is turned on again, so that the control means 16 is heated. The ability and display are restored to the original ability, and it is extremely convenient to use.

The electric heater 1 according to the embodiment of the present invention configured as described above has the following operational effects.
That is, from the depression position in the rotating shaft unit 4 shown in FIG.
The depression angle and the elevation angle can be adjusted as appropriate up to the elevation angle position shown in e).

  The electric stove 1 according to the embodiment of the present invention has an elevation angle engaging body urging means that forms an elevation angle adjusting hole 83a and a depression angle adjusting hole 9a in the angle adjusting portion 83 and urges the angle adjusting portion 83 from the inside of the elevation angle adjusting hole 8a. 80 and the depression engaging member urging means 9 for urging from the outside of the depression adjusting hole 9a are separately provided, so that the depression engaging member urging means 9 is more than the elevation engaging member urging means 80. And the depression angle adjusting hole 9a is disposed with a turning radius R2 larger than the turning radius R1 of the elevation angle adjusting hole 83a, so that the depression angle adjusting hole 9a is surely connected to the elevation angle adjusting hole 83a. Can be provided so as not to overlap.

  Further, by forming the elevation angle engaging body biasing means 80 and the depression angle engaging body biasing means 9 separately, the depression angle engaging body biasing means is adapted to the position of the depression angle adjusting hole 9a (turning radius R2). The urging force of the means 9 can be suitably set, and the urging force of the elevation engaging member urging means 80 can be suitably set according to the position (rotation radius R1) of the elevation angle adjusting hole 83a. The operation feeling for adjusting the depression angle and the depression angle can be suitably set to eliminate the user's uncomfortable feeling and improve the feeling of use (operation feeling).

  Further, as described above, when the main body case portion 2 is inclined to the depression angle side by the depression angle adjusting hole 9a, the micro switch 19 is turned off to detect this, and after the control means 16 starts counting, it is determined in 30 seconds. Shows the current heating capacity set for the heater 21, and if this heating capacity is greater than or equal to the predetermined capacity, the control means 16 forcibly reduces the heating capacity to below the predetermined capacity. When the ability is less than the predetermined ability, the low ability is continued as it is, and it is possible to surely prevent the floor surface from being burned by long-time heating with the high heating ability at the depression angle, It is extremely easy to use.

  Furthermore, since this micro switch detects the depression angle by changing from the ON state to the OFF state, even if the micro switch is disconnected or the lead wire is cut off, it can be switched to the side that reduces the ability. It is safe and easy to use.

DESCRIPTION OF SYMBOLS 1 Electric heater 2 Main body case part 3 Support part 4 Rotating shaft unit 16 Control means 19 Micro switch 20 Pressing plate 21 Heater

Claims (1)

  A main body case portion having a heater capable of changing the heating capacity and a support portion are provided, the main body case portion and the support portion are connected by a rotary shaft unit, and the main body case portion is turned to the depression side by the rotary shaft unit. In the electric stove that can be turned, a micro switch is provided to detect that the main body case portion is turned to the depression side from the ON state to the OFF state, and the micro switch detects the depression angle of the main body case portion. An electric stove provided with a control means for forcibly reducing the heating capacity to below the predetermined capacity when the heating capacity of the heater is equal to or higher than the predetermined capacity when detected.

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