JP3111329B2 - Toaster oven - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oven toaster used in ordinary households.

[0002]

2. Description of the Related Art Conventionally, an oven toaster of this kind has an operation part provided on the front side as shown in FIG. 4 of Japanese Utility Model Publication No. 3-5768.
The structure shown in FIG.

[0003] That is, upper and lower heaters 3 and 4 are suspended on the side wall of an inner casing 2 forming the cooking cabinet 1, and the upper and lower heaters 3 and 4 are suspended.
4, a grille 5 is provided, a door 6 that opens and closes a front opening of the inner housing 2 is provided, and a timer 7 is attached to the lower side of the door 6. Is provided.
Further, a mounting bracket 11 to which a switch 10 for switching the thermal power is mounted is attached to the bottom plate 9 of the main body.

[0004]

However, in such a configuration, the depth of the depression of the front plate 8 having a U-shaped cross section is such that the lower end surface of the door 6 projects outward and does not catch a hand with a corner. In addition, in order to improve the appearance of the exterior, the size of the door 6 is equal to or greater than the thickness of the door 6, and the front plate 8 is formed by bending.
The corner portion of the front plate 8 has a shape in which a thin metal plate is formed, and there is a disadvantage that a gap is easily formed in the corner portion, the appearance is poor, and the strength is weak and the shape is easily deformed.

In addition, if water is accidentally spilled on the main body, or if the timer 7 breaks down and insulation becomes defective, the metal front plate on which the timer 7 is mounted may have a short circuit.

[0006] Further, since the mounting bracket 11 to which the switch 10 is mounted is attached to the bottom plate 9, the position of the switch 10 may be shifted from front to back and left and right.
If the position shift is large, the switch 10 may come into contact with the front plate 8 when the switch 10 is operated, and the operability may be deteriorated.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide an oven toaster having high strength, good appearance and high safety.

[0008]

In order to achieve the above object, an invention according to claim 1 is directed to an inner housing which forms a cooking cabinet in which a heater and a grill are disposed in a main body, and the inner housing. In the oven toaster having a door body for opening and closing the front opening of the body, a metal plate provided with a switch operation unit on the lower side of the door body, and a front plate having a U-shaped cross section, the substrate holder holding the circuit board is provided. The substrate holder is provided inside the main body so as to face the front plate, and left and right side surfaces of the substrate holder are exposed to the outside from the side surfaces of the front plate, and the front plate is attached to the main body with the substrate holder interposed therebetween.

According to a second aspect of the present invention, a burring hole through which a switch button and a switch knob penetrate is provided on the front plate, and a convex claw is provided on a side surface of the burring hole, and the burring hole is provided on the front plate. A hole is provided in a portion of the substrate holder opposite to the claw, and a claw having a convex shape on a side surface of a burring hole provided in the front plate is inserted into the hole provided in the substrate holder, and both are mounted.

[0010]

According to the structure of the first aspect, the depth of the U-shaped depression of the front plate can be made small, and the corner portion of the front plate has a shape capable of being drawn continuously. The strength can be increased, and the appearance can be improved.

According to the second aspect of the present invention, the position of the switch button and the switch knob is less shifted, and the electric and electronic components of the circuit board are fixed to the board holder 30 so that the electric and electronic parts are broken due to failure.
Even if insulation failure occurs in the electronic component, the outer shell of the main body does not leak and the safety can be improved.

[0012]

An embodiment of the present invention will be described below with reference to the drawings.

1 to 4, reference numeral 21 denotes a cooking cabinet, 2
Reference numeral 2 denotes an inner housing forming a cooking cabinet, 23 denotes an upper heater suspended on an upper side wall of the inner housing 22, and 24 denotes a lower heater suspended on a lower portion of the inner housing 22.

Reference numeral 25 denotes a grill which is provided on the inner casing 22 between the upper heater 23 and the lower heater 24 so as to be slidable back and forth.
Reference numeral 6 denotes a door that opens and closes a front opening of the inner housing 22, and is attached to the main body 28 so as to be rotatable around a lower shaft 27. The grill 25 slides back and forth in conjunction with opening and closing of the door 26.

A metal front plate 29 having a U-shaped cross section is provided on the front side of the main body below the door 26.

Inside the front plate 29, a resin substrate holder 30 is mounted substantially parallel to the front plate 29. The left and right side surfaces of the substrate holder 30 are exposed to the outside from the side surfaces of the front plate, and constitute the left and right side surfaces of the front plate 29.

A circuit board 34 having a plurality of tact switches 31, LEDs 32, capacitors, resistors, and other electrical and electronic components 33 mounted on the inside of the front plate 29 substantially parallel to the front plate 29 is mounted on the substrate holder 30. I have.

At a position facing the front side of the tact switch 31, the substrate holder 3 is provided with a thin rib so as to have flexibility.
A rib 36 is provided in a substantially vertical direction from a peripheral portion of the switch button portion 35 provided integrally with the
6, a substantially L-shaped rib 37 is further provided, and the tip of the rib 37 faces near the tact switch and the tip of the rib 36 faces near the circuit board 34. The gap between the tip of the rib 36 and the circuit board is larger than the gap.

A burring hole 38 through which the switch button 35 penetrates is provided in the front plate 29, a convex claw 39 is provided on a side surface of the burring hole 38, and a square hole 40 is provided in a portion of the substrate holder 30 facing the claw 39. The nail 39 is inserted into the square hole 40 and bent, and the substrate holder 30 is attached to the front plate 29.
Is fixed.

A through hole 41 is provided in a switch button portion 35 provided at a position facing the LED 32 provided on the circuit board 34 near the tact switch 31, and a through hole 41 is provided at a position facing the through hole 41. A switch button cover 43 having a hole 42 and covering the outer periphery of the switch button portion 35 is press-fitted, and a transparent resin lamp cover 44 having a boss in which a boss portion is inserted into the through holes 41 and 42 is fitted to its flange portion 44a. Is mounted between the switch button section 35 and the switch cover 43.

Further, a heat shield plate 45 is provided between the circuit board 34 and the inner housing 22 in parallel with the inner housing 22.

The bottom plate constituting the bottom portion of the outer housing is provided with a hole except for a portion of the portion covering the space between the front plate 29 and the inner housing 22 which is opposed to the circuit board 34 at a substantially central portion.

As described above, according to this embodiment, the front plate 29
The left and right side surfaces of the substrate holder 30 are exposed to the outside from the side surfaces of the front plate 29 on both sides of the substrate holder 30.
The front plate 29 is attached with the front plate 29 interposed therebetween, so that the depth of the recess of the front plate 29 can be reduced, and the corners of the front plate 29 have a shape that enables continuous drawing processing.
9, and the appearance can be improved.

Further, a convex claw 37 is provided on the side surface of a burring hole 36 provided in the front plate 29 penetrating the switch button portion 35, and a portion of the substrate holder 30 at a position facing the claw 37 provided on the front plate 29. A square hole 38 provided in the substrate holder 30 and a convex claw 37 on a side surface of a burring hole 36 provided in the front plate 29 is inserted into and attached to the square hole 38 provided in the substrate holder 30 to shift the position of the switch button portion 35. It is easy to assemble with a configuration in which the substrate holder 30 is mounted between the main body 28 and the front plate 29 with the substrate holder 30 interposed therebetween.
Also, by mounting and fixing the electric and electronic components of the circuit board 34 to the resin-made substrate holder 30, even if the electric or electronic components are poorly insulated due to a failure or the like, the outer shell of the main body does not leak and the safety is improved. it can.

[0025]

As described above, according to the present invention, the left and right sides of the substrate holder are exposed on both sides of the front plate to the outside from the side surfaces of the front plate, and the front plate is attached to the main body with the substrate holder interposed therebetween. The depth of the depression of the front plate can be made shallow, and the corner portion of the front plate has a shape capable of being drawn in a continuous state, so that the strength of the front plate is increased and the appearance of the appearance can be improved.

Further, a convex claw is provided on a side surface of a burring hole provided on the front plate through the switch button portion, and a square hole is provided on a portion of the substrate holder opposed to the claw provided on the front plate. By inserting and attaching the convex nail on the side of the burring hole provided on the front plate to the square hole provided on this board holder, the position of the switch button part is less displaced,
In addition, since the substrate holder and the front plate are fixed in the vicinity of the switch button portion, even if the switch button portion is strongly pressed, the amount of deformation can be reduced and the strength can be increased.
In addition, it is possible to easily assemble the device by mounting the substrate holder between the main body and the front plate. Further, by mounting and fixing the electric / electronic parts of the circuit board to the resin-made substrate holder, even if the electric / electronic parts have defective insulation due to a failure or the like, the outer shell of the main body does not leak and the safety can be improved.

Thus, according to the present invention,
An oven toaster with good appearance, high safety, and excellent assemblability and serviceability can be provided.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an oven toaster according to one embodiment of the present invention.

FIG. 2 is a cross-sectional view of the main part.

FIG. 3 is an exploded perspective view of the main part.

FIG. 4 is a perspective view of the same.

FIG. 5 is a cross-sectional view of a conventional oven toaster.

FIG. 6 is a cross-sectional view of the other part.

FIG. 7 is a perspective view of the same.

[Explanation of symbols]

 22 Inner Case 23 Upper Heater 24 Lower Heater 25 Grid 26 Door 29 Front Plate 30 Board Holder 34 Circuit Board 38 Burring Hole 39 Claw 40 Square Hole

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model 62-171716 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24C ⁷ /04-7/06 A47J 37 / 08 F24C 7/08 340 F24C 15/06

Claims (2)

(57) [Claims] 1. An inner housing forming a cooking cabinet in which a heater and a grill are arranged in a main body, a door body for opening and closing a front opening of the inner housing, and a switch operating part provided below the door body. In the oven toaster having a front plate having a U-shaped cross section of a metal plate, a substrate holder holding a circuit board is provided inside the main body so as to face the front plate, and the left and right side surfaces of the substrate holder are provided on the front plate. An oven toaster with a front plate attached to the body with a substrate holder sandwiched between the sides and exposed to the outside. 2. An inner housing forming a cooking cabinet in which a heater and a grill are arranged in a main body, a door body for opening and closing a front opening of the inner housing, and a switch operating part provided below the door body. In an oven toaster having a U-shaped front plate having a cross section of a metal plate,
A burring hole through which a switch button and a switch knob penetrate is provided in the front plate, and a convex claw is provided on a side surface of the burring hole, and a hole is formed in a portion of the substrate holder at a position facing the claw provided on the front plate. An oven toaster in which a convex nail on the side surface of a burring hole provided in the front plate is inserted into a hole provided in the substrate holder, and both are mounted.