JPS63310593A - Microwave oven - Google Patents

Abstract

PURPOSE:To prevent external leak of microwaves so as to improve safety by installing one end of metal connecting means such as door arms connecting a door with a main body of a microwave oven outside the choke space inside the door. CONSTITUTION:Leaking waves from between a front panel 16 and a punching panel produced while microwave heating are restricted from external leak by action in a choke space. In the meanwhile, if a door 3 is turned clockwise after completion of heating, it is opened about a hinge 17. At this time, a door arm 22 moves up and down, and an absorbing plate 31 also waves up and down following the arm 22. A slit 23 in the front panel 16 is always choked by the absorbing plate 31, thereby foreign matters are not inserted through the slit 23, and leaking waves externally are stopped because they are absorbed by the absorbing plate 31. By insalling one end of the hinge 17 and the door 3 outside the choke space, therefore, external leak of microwaves can be prevented.

Description

[Detailed description of the invention] P) Industrial application fields The present invention relates to a microwave oven.

In the conventional microwave oven disclosed in Japanese Patent Publication No. 59-15759, etc., the microwave oven main body in which the heating chamber is arranged and the door that opens and closes the opening of the heating chamber are made of a metal door arm or the like. are in contact with each other.

However, one end of such a door arm, etc. generally reaches into the microwave choke space inside the door, and therefore, some of the microwaves in the choke space leak outside using the door arm, etc. as an antenna, which is extremely dangerous. It is.

(C) Problems to be Solved by the Invention The present invention attempts to provide a safe microwave oven by preventing microwaves from undesirably leaking from the microwave choke space inside the door by using the door arm, etc. as an antenna. It is.

B.) Means for Solving the Problems The present invention provides a heating chamber disposed inside a microwave oven body to which microwaves are supplied, and a metal door body that opens and closes an opening of the heating chamber to form a microwave choke space. a door with a
In a microwave oven equipped with a metal communication means communicating between the door and the microwave oven main body, the outer peripheral part of the door main body is bent outward, and the communication means is provided through the bent part. The device is characterized in that a trail of the means extends outside the choke space within the door.

(e) Function: One end of the metal communication means such as the door arm connected between the door and the microwave oven body was placed outside the choke space inside the door, so that the microwaves in the choke space could be transmitted to the metal. It is safe because there is no undesirable leakage when the manufactured communication means is used as an antenna.

Further, one end of the communication means extends outside the choke space in the door through the outer bent portion of the outer periphery of the door body and is attached thereto, so that the attached portion is attached to the outer bent portion. The outside bending part is formed by bending the outer peripheral part of the door body and is integral with the door body, so the structure is simple.

(v) Embodiment The drawings show a microwave oven according to an embodiment of the present invention, in which (1) is a microwave oven main body, and (2) is a microwave oven disposed inside the main body for heating food from a magnetron (not shown). (3) is the front opening (2) of the heating chamber where
&) is a door that opens and closes.

In such a door (3), (4) has a U-shaped cross section and the door (
3) A metal door body disposed around the door body, the inner peripheral part of the door body is bent inward to form an integral inward bending part (5
), and the outer periphery of the door body (4) is bent outward from the door to form an integral outward bending part (6).

(7) is a metal punching plate that is welded and fixed to the inner bent part (5) of the door body (4) and has a large number of punched holes (8k (8)...) formed in the center that do not allow microwaves to pass through. Here, the door body (4) has a punching plate (
7) to form a microwave choke space (9).

(1 (I is a dielectric cover that closes the opening of the choke space,
ttU is an inner transparent plate fixed to the inside of the punching plate (7), fi is an outer transparent plate fixed to the outside of the door body (4), and L12 is a door frame with a handle I integrally formed on the top. It is the body.

As shown in FIG. 2, α9 is a fixed plate (
Reference numeral 171 denotes a hinge fixed to the fixed plate, and one end of the hinge projects from the slit (Q♂) of the front plate ae to the outside of the microwave oven main body (1), and connects to the slit (1) of the outward bent portion (6).
The choke space (9) inside the door (3) via the
) to the outside and is rotatably connected to the metal fitting ■ there.

3υ is a roller rotatably supported on the fixed plate α9,
■ is a metal door arm, and one end of the door arm is similarly connected from the other slit (c) of the front plate αe to the microwave oven body (
1) Projects outward and reaches outside the choke space (9) in the door (3) through another slit @ of the outward bending part (6), and is freely rotatable around the fixed shaft (c) there. is connected to. Then, the door arm @ rides on the roller Qυ on the way), and the other end of the door arm extends rearward into the microwave oven main body (1) and is attached to the bottom wall c of the microwave oven main body by a spring (c). Connected to D. ■ is the door switch. Here, both the hinge aη and the door arm serve as metal communication means between the door (3) and the microwave oven main body (1). The crane is formed by bending a part of the fixed plate α9 to correspond to the back surface of the front plate,
a holding plate having a round opening through which the door arm is freely inserted; D is a microwave absorbing plate which is movably held on the holding plate and has a slit Q through which the door arm is inserted; The size of C33 is approximately the same as the cross-sectional size of the portion of the door arm that is inserted into the slotted sleeve C3a. Note that although Figure g2 shows the structure on the left side of the heating chamber (2), a similar structure is also present on the right side of the heating chamber (2).

To perform microwave heating, the door (3) is moved to close as shown in each figure. Then, the other end of the door arm Ω turns on the door switch (2), thereby enabling υ microwave heating. During microwave heating, some microwave leaks from between the front plate αG and the punching plate (7), but the leakage of the microwave to the outside of the microwave is significantly suppressed by the action of the choke space (9). .

On the other hand, to move the door (3) open after the microwave heating is finished, hold the handle I and apply force to the door (3) in the clockwise direction (Fig. 2).Then, the door (3) will open the hinge αη. The door arm rotates clockwise against the spring on all sides to open the door.At this time, the door arm moves up and down due to the opening movement of the door (3), and the absorption plate C31) also moves through the slit. Since the size of the arm is approximately the same as the cross-sectional size of the arm, the arm moves up and down following the arm. Therefore, the front plate (with 1G slit) is always blocked by the absorption plate C311, and foreign matter is not inserted into the microwave oven main body (11) through the slit. Microwaves that are about to leak to the outside through the slit are absorbed by the absorption plate C31+ and are blocked.

Now, the hinge αD as a communication means and one end of the door arm reach outside the choke space (9) in the door (3) and do not reach inside the choke space (9). It is safe because the microwave does not become an antenna and undesirably leaks from the choke space (9). Further, the hinge (17) and one end of the door arm Ω reach the outer west of the choke space (9) in the door (3) via the outward bending part (6) of the door body (4), and are rotatable there. This mounting part is covered by the outward bending part (61) and is not unsightly.Moreover,
The outer bent portion (6) is obtained by folding the outer circumferential portion of the door body (4), and is integral with the door body (4), making the structure simple.

(g) Effects of the Invention According to the present invention, microwaves do not leak undesirably from the micro temporary choke space in the door, making it safe, giving the door a good appearance, and simplifying the structure of the door, making it practical. 0 that can provide a microwave oven

[Brief explanation of drawings]

The drawings show a microwave oven according to an embodiment of the present invention, and Fig. 1 is a front view, Fig. 2 is a sectional view taken along line...-■ of Fig. 8g1, and Fig. 5 is a sectional view of Fig. 1.
It is a sectional view taken along the line 1-1 in the figure. (1)...Microwave oven body, (2)...Heating M, (
31...Door, (4)...Metal door body, (6)
...Outward bending part, (9)...Microwave choke space, Q7)...Hinge, ■...Metal door arm.

Claims (1)

[Claims] (1) A heating chamber disposed inside the microwave oven body to which microwaves are supplied, a door having a metal door body that opens and closes the opening of the heating chamber and forms a microwave choke space, and the door and the microwave oven. In a microwave oven equipped with a metal communication means connected to the main body, an outer peripheral part of the door main body is bent outward, and one end of the communication means is connected to the door through the bent part. A microwave oven characterized in that the choke space inside the microwave oven is extended outside the choke space.