JPS5848486Y2 - High frequency heating device door - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a door for a high frequency heating device.

Generally, when a hinge part for opening and closing a door is provided with a stopper when opening, the outer periphery is bent on four sides, as shown in Figure 1.
Alternatively, the stopper 2 for opening the door was fixed by screwing or spot welding to a part of the hinge side corner of the lower surface of the frame 1 formed into a frame shape by drawing, etc., but the hole that becomes the axis when opening and closing the door was fixed. The notch effect of a and the distance from the threaded part or spot welding part to the stopper part cannot withstand the reaction force when the stopper is activated when the door is opened, and the lower surface of the stopper 2 or the frame 1 to which it is fixed is deformed. However, it is difficult to ensure the stopper function, and as a countermeasure to this problem, measures such as increasing the plate thickness or width of the stopper 2 and the frame 1 have been necessary in order to increase the effective cross-sectional area of the stopper 2 and the frame 1.

The present invention seeks to eliminate such conventional drawbacks.

One embodiment of the present invention will be described below. In Figures 2 and 3, 1 is a frame made by bending the four peripheral edges of a single flat metal plate in the same direction, and serves as the pivot shaft for opening and closing the door. A through hole into which a pin (not shown) is loosely fitted (
Similarly, a hole (not shown) larger than the through hole through which a pivot hinge pin (not shown) passes is formed at the end of the upper bent portion 3 (not shown). They are provided on the lower bent portion 4 so as to be located on the same vertical line.

Reference numeral 2 denotes a metal stopper provided to cover the hole (not shown) in the frame 1, and when the door D is opened at a predetermined angle, the stopper comes into contact with a stopper 7 fixed to the heating device main body 6. The portion 8 is formed by bending one end in advance.

Reference numeral 9 denotes a through hole provided in this stopper, which is provided at a position that coincides with a hole (not shown) in the frame 1.

As shown in FIG. 3, the stopper portion 8 straddles the lower bent portion 4 and the side bent portion 5 of the bent portions 3 and 4°5 formed around the frame 10. It is fixed by arc welding.

The door D is rotatably supported on the main body 6 by loosely fitting hinge pins (not shown) into holes (not shown) provided in the upper and lower bent portions 3 and 4 of the door D.

Note that C indicates an arc welded portion.

With the above configuration, when the door D is opened at a predetermined angle 1, the contact surface 10 of the stopper part 8 of the stopper 2 hits the stopper 7 fixed to the main body 6 and restricts the opening of the door D. , due to the reaction force of the impact force on the stopper 7, the stopper part 8 of the stopper 2 tends to separate from the frame 1 as shown by arrow A in FIG. There is a risk that permanent deformation will occur in this direction and the stopper function will eventually be lost.

However, in the present invention, the stopper part 8, the lower bent part 4 of the frame, and the bent part 5 provided in a direction orthogonal thereto are simultaneously fixed by arc welding or the like at a position close to the stopper part 8. , not only can deformation of the stopper be effectively prevented, but also the strength of the frame door can be increased, and a reliable stopper function can be expected.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional door, Fig. 2 is a perspective view of a high-frequency heating device to which the present invention is applied, with the door open;
FIG. 3 is a perspective view of the main part of the door. In the figure, 1 is a frame, 2 is a stopper, 3, 4° 5 is a bent part, and 8 is a part of a stopper. In the drawings, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] A door stopper for regulating the opening range of the door is provided on the outer peripheral surface of a metal frame that forms the outer shell of the door, and the frame is formed by bending the peripheral edges of a single flat metal plate in the same direction. A door for a high-frequency heating device, characterized in that a metal stopper is provided at a corner of the door, and the stopper and two adjacent bent portions are simultaneously fixed by welding.