JP2001263676A - Heating cooking apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooking apparatus to prevent the occurrence of a failure in operation of a lamp due to vibration through simple structure. SOLUTION: Engaging holes (an engaging part on the flange part side) 9 are formed in two spots in a flange part 8 formed at the upper part of a holder 7. Meanwhile, a claw part 10 is formed in a manner to cover the engaging hole 9 and the claw part 10 is provided with an engaging protrusion (an engaging part on the claw part side) 11 coinciding with the engaging hole 9. The height of the claw part 10 is higher than the thickness of the flange part 8 and the diameter of the engaging hole 9 is formed larger than the diameter of the engaging protrusion 11. When the flange part 8 is inserted in a gap between an upper surface 5a of the duct 5 and the claw part 10 with a play, the engaging hole 9 and the engaging protrusion 11, simultaneously, are engaged with each other with a play.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking device such as a microwave oven, and more particularly to a cooking device having a lamp mounting structure for illuminating a heating chamber.

[0002]

2. Description of the Related Art A microwave oven which is an example of a cooking device will be described. In general, a heating chamber is provided in a microwave oven to accommodate an object to be heated, and a magnetron that supplies a microwave for heating the object to be heated,
A duct or the like for guiding cooling air for cooling the magnetron is provided. The duct is formed by bending a metal plate, and internally has a lamp mounted and held in a holder. And it is fixed to the outer surface of the side wall of the heating chamber by screws or the like. An infinite number of holes are formed in the side wall of the heating chamber to which the duct is fixed, and the lamp is illuminated into the heating chamber through the holes.

FIGS. 5 and 6 show a conventional lamp mounting structure. The holder 7 on which the lamp 6 is mounted has a flange 8
Are formed. On the other hand, a holder insertion opening 12 for inserting the holder 7 is formed in the upper surface 5a of the duct. The holder 7 is attached by inserting the holder 8 into the opening 12 and locking the flange 8 to the upper surface 5 a of the duct, and then fixing the end of the flange 8 with a screw 20. The flange 8 is provided with a hole 21, and a projection 22 formed by cutting and raising the upper surface 5 a of the duct is protruded from the hole 21 so that the flange 8 rotates about the screw 20. It is devised not to.

[0004]

However, the above-described lamp mounting structure, that is, a part of the holder (a flange portion).
When the door is opened and closed or delivered, the vibration received by the microwave oven body also vibrates the duct fixed to the side wall of the heating chamber, and the vibration is directly transmitted from the duct to the lamp through the holder to the lamp. It will be transmitted. When the lamp is subjected to such vibrations, the filament provided at the center of the lamp may be broken, causing a failure of the lamp.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heating cooker which can prevent a lamp failure caused by vibration with a simple structure.

[0006]

According to a first aspect of the present invention, there is provided a heating cooker comprising a heating chamber for accommodating an object to be heated, a lamp for illuminating the heating chamber, a holder for holding the lamp, and the holder. A flange portion, a flange-side engaging portion formed on the flange portion, a plate-like base material for mounting a holder provided outside the heating chamber, and a plate-like base material formed on the plate-like base material. A claw portion between which the collar portion is inserted with play, and formed on the claw portion;
When the flange portion is inserted, the flange portion side engagement portion is engaged with play with play, and the flange portion inserted with play between the plate-shaped base material and the claw portion is prevented from coming off. And a claw portion-side engaging portion.

According to a second aspect of the present invention, there is provided a heating cooker comprising: a heating chamber for accommodating an object to be heated; a lamp for illuminating the heating chamber; a holder for holding the lamp; a flange formed on the holder; A flange-side engaging portion formed on the flange portion, a plate-shaped base material for mounting a holder provided outside the heating chamber, a holder insertion opening formed in the plate-shaped base material, and the plate-shaped base material When the flange is slid with respect to the plate-shaped substrate in a state where the holder is inserted into the holder insertion opening, the flange is inserted with play between the plate and the substrate. Claw portion, which is formed on the claw portion, engages with play with the flange-side engaging portion when the flange portion is inserted, and has play between the plate-shaped base material and the claw portion. And a claw-side engaging portion for preventing the inserted flange portion from coming off.

According to a third aspect of the present invention, in the heating cooker according to the first or second aspect, the flange portion is inserted with play between the plate-shaped base and the claw portion. The plate-shaped base member is provided with a stopper for preventing movement of the base member in the non-insertion direction.

According to a fourth aspect of the present invention, there is provided a heating cooker according to the first or second aspect, further comprising a magnetron for supplying a microwave for heating the object to be heated into the heating chamber, and a duct for guiding cooling air for cooling the magnetron. Is used as the plate-shaped base material.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

Referring to FIGS. 1 to 4, reference numeral 1 denotes an exterior, 2 denotes a heating chamber for housing an object to be heated, 3 denotes a magnetron for supplying a microwave into the heating chamber 2, and 4 denotes a magnetron. A cooling fan 5 for supplying cooling air to the magnetron 3 is a duct for guiding the cooling air into the heating chamber 2. The duct 5
Is formed by bending a metal plate.
Is fixed to the outer surface of the side wall 2a of the heating chamber 2 while being connected to the heating chamber 2. The heating chamber 2 is provided on the upper surface 5a of the duct 5.
A holder 7 with a lamp 6 illuminating the inside is attached.

A number of holes (not shown) are formed in the side wall 2a of the heating chamber 2. Through the holes, cooling air that has cooled the magnetron 3 is exhausted into the heating chamber 2 and the lamp 6 Is illuminated into the heating chamber 2.

The mounting structure of the holder 7 on which the lamp 6 is mounted will be described. In the upper part of the holder 7, a flange 8 is formed. The flange 8 is provided with engagement holes (flange-side engagement portions) 9 at two ends, which are used to attach the holder 7 to the upper surface 5a of the duct 5. On the other hand, a claw portion 10 is formed on the upper surface 5 a of the duct 5 so as to cover the engagement hole 9. The claw portion 10 is formed so as to be thicker than the thickness of the flange portion 8, and has a tip 1.
0a are formed so as to face in opposite directions to each other. The claw portion 10 is provided with an engagement projection (claw portion-side engagement portion) 11 corresponding to the engagement hole 9. The diameter of the engagement hole 9 is formed larger than the diameter of the engagement protrusion 11.

Further, a holder 7 is provided on the upper surface 5a of the duct 5.
Insertion opening 12 for inserting a hole, and upper surface 5a of duct 5
A stopper 13 is provided to prevent the flange 8 inserted between the hook and the claw 10 from easily coming off. The stopper 13 and the claw portion 10 are provided by cutting and raising the upper surface 5a of the duct 5 made of a metal plate. Therefore, they have elasticity.

The mounting order of the holder 7 will be described. First, the holder 7 is inserted into the holder insertion opening 12. In the inserted state, the flange 8 formed on the upper portion of the holder 7 is slid so as to rotate on the upper surface 5a of the duct 5. Then, the flange portion 8 gets over the stopper 13 and is inserted with play between the upper surface 5a of the duct 5 and the claw portion 10. When the flange 8 is inserted, at the same time, the engaging hole 9 of the flange 8 and the engaging projection 11 of the claw 10 are engaged with play. As a result, the flange 8 is connected to the upper surface 5a of the duct 5 and the claw 1
0, the flange 8 is arranged at a predetermined position and can be held so as not to come off from between the upper surface 5a of the duct 5 and the claw 10. At this time, no components or tools are required for arrangement and holding.

After the stopper 13 has passed through the flange 8,
The elasticity has returned and is rising. Therefore, the flange 8 cannot be rotated except in the insertion direction.
However, if you want to remove the holder 7 from the duct 5,
If the flange 8 is rotated in the direction opposite to the direction at the time of insertion while pushing the stopper 13 below the upper surface 5a of the duct 5, the stopper can be easily removed.

In the above embodiment, a microwave oven is shown as an example. However, the present invention is not limited to this, and a lamp for illuminating the heating chamber, a holder for mounting the lamp, and a lamp provided outside the heating chamber may be provided. The present invention can be applied to a heating cooker provided with a plate-shaped substrate to which a holder is attached. In addition, in the description, the case where the engaging hole is provided on the flange portion side and the engaging protrusion is provided on the claw portion side is described.

[0018]

According to the heating cooker of the present invention, a heating chamber for accommodating an object to be heated, a lamp for illuminating the heating chamber, a holder for holding the lamp, and a flange formed on the holder A flange-side engaging portion formed on the flange portion, a plate-shaped base material for mounting a holder provided outside the heating chamber, and a plate-shaped base material formed on the plate-shaped base material. A claw portion in which the flange portion is inserted with play, formed on the claw portion, engages with play in the flange portion-side engaging portion when the flange portion is inserted, and The claw portion is provided with a claw-side engaging portion that prevents the flange portion inserted with play between the claw portion and the claw portion from coming off. It can be inserted and held with play between the claws. Therefore, the vibration given to the heating cooker main body is absorbed by the play, so that the vibration can be prevented from being transmitted to the lamp. In addition, when inserting and holding the flange, a dedicated part is not required, which leads to cost reduction, and a tool is not required, so that the work can be performed easily.

The holder is formed on the plate-shaped base by sliding the flange portion with respect to the plate-shaped base while being inserted into the holder insertion opening formed on the plate-shaped base. Since the mounting method is such that the holder is inserted between the plate-shaped base material and the claw portion, the holder is not easily removed.

Since the plate-shaped base material is used in common with a part of a duct for guiding cooling air for cooling the magnetron, the structure can be simplified and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan sectional view of a microwave oven according to an embodiment of the present invention.

FIG. 2 is a side sectional view of a lamp section of the microwave oven.

FIG. 3 is a plan view of a lamp section of the microwave oven.

FIG. 4 is a view when viewed from an A direction in FIG. 3;

FIG. 5 is a side sectional view of a lamp portion of a microwave oven in a conventional example.

FIG. 6 is a plan view of a lamp portion of a microwave oven in a conventional example.

[Explanation of symbols]

 2 Heating chamber 3 Magnetron 5 Duct (plate-like base material) 6 Lamp 7 Holder 8 Flange 9 Engagement hole (flange-side engagement part) 10 Claw 11 Engagement projection (claw-side engagement part) 12 Holder insertion Opening 13 Stopper

Claims (4)

[Claims] 1. A heating chamber for accommodating an object to be heated, a lamp for illuminating the heating chamber, a holder for holding the lamp, a flange formed on the holder, and a flange formed on the flange. A side engaging portion, a plate-like base material for holder attachment provided outside the heating chamber, and the flange portion is formed with play between the plate-like base material and the plate-like base material. Claw portion, which is formed on the claw portion, engages with play with the flange-side engaging portion when the flange portion is inserted, and has play between the plate-shaped base material and the claw portion. And a claw-side engaging portion for preventing the inserted flange portion from coming off. 2. A heating chamber for accommodating an object to be heated, a lamp for illuminating the heating chamber, a holder for holding the lamp, a flange formed on the holder, and a flange formed on the flange. Side engagement portion, a plate-shaped base material for mounting a holder provided outside the heating chamber, a holder insertion opening formed in the plate-shaped base material,
When the flange is slid with respect to the plate-shaped substrate while being formed in the plate-shaped substrate and the holder is inserted into the holder insertion opening, the flange has a play with the plate-shaped substrate. A claw portion to be inserted with the claw portion, which is formed on the claw portion and engages with play with the flange portion side engaging portion when the flange portion is inserted, and the plate-shaped base material and the claw portion And a claw-side engaging portion for preventing the flange portion inserted with play from being removed therefrom. 3. A stopper for preventing the flange from moving in the non-insertion direction when the flange is inserted with play between the plate-shaped base and the claw. The cooking device according to claim 1, wherein the cooking device is formed on a plate-shaped substrate. 4. A magnetron for supplying a microwave for heating an object to be heated into the heating chamber, and a part of a duct for guiding a cooling air for cooling the magnetron is used as the plate-shaped substrate. 3. The cooking device according to 2.