JPH0221697Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a door opening/closing device for a cooking appliance that constantly applies rotational force to the door in the closing direction, holds the door open in the fully open position, and allows the door to be easily attached and detached. It is.

Cooking appliances such as gas stove grills need to be cleaned relatively frequently as the interior is easily dirty due to spillage of ingredients, but recessed areas such as the bottom are difficult to clean without removing the door. It is something. On the other hand, this type of cooker generally has a door that rotates in the front and rear directions, and is supported by the main body frame so that it can rotate around a fulcrum.
Moreover, in order to make it easy to take food in and out, the structure is such that the door can be held open in the fully open position, and because of these opening/closing control mechanisms, the door cannot be easily attached or removed. It was hot.

The present invention was developed with the aim of addressing these problems and providing a cooker door opening/closing device that allows the door to be easily attached/detached, especially to be attached. A door opening/closing device for a cooking appliance that supports a pivoting door so that it can rotate, applies rotational force to the door in the closing direction, and has an opening/closing control mechanism that keeps the door open in the fully open position. The door has an engaging pin provided on one side of the door so as to protrude outward from a cutout hole in the main body frame at a position eccentric from the fulcrum of the door, and a pin holding part with which this engaging pin slides. It is rotatably supported on the body frame by a fulcrum placed opposite to the fulcrum on the movement locus of the engagement pin, and the rotational force biasing means applies a pressing force in the direction of closing the door to the engagement pin. The inclination of the pin holding part is selected so that the pressing force applied to the engagement pin is directed toward the fulcrum of the door when the door is fully open, and when the door is fully closed. The opening/closing control mechanism includes a cam plate configured to stop rotating at the opening/closing control mechanism. Further, the width of the notch hole in the main body frame through which the engaging pin of the door is inserted is formed to be large enough to allow the engaging pin to bypass the tip of the pin holding portion when the door is in the fully closed position.

Next, the present invention will be specifically explained with reference to an illustrated embodiment.

FIG. 1 is an exploded perspective view of the main parts, FIG. 2 is a side view of the same, and FIG. 3 is an explanatory diagram of the operation. In the figure, 1
is a door, 2 is a body frame to which the door 1 is attached, mounting holes 3 are provided on both sides of the lower part of the door 1, and corresponding holes 4 are also provided in the body frame 2,
Align these holes 3 and 4 and insert the long hinge pin 5.
By inserting the door 1 into the body frame 2, the door 1 is rotatably attached to the main body frame 2. 6 is an engagement pin provided near one hole 3 of the door 1, and the hinge pin 5
It is provided so as to protrude to the outside of the main body frame 2 in parallel with the main body frame 2 . Note that the other hole 3 of the door 1 has a structure in which a hinge pin 5 is inserted simply by aligning the position with the hole 4, and is not shown in the drawings. 7 is the engagement pin 6
It is a cutout hole provided in the side plate of the main body frame 2 corresponding to the hole 4, and is formed in an arc shape with the hole 4 as the center, and its lower edge approaches the hole 4 as it goes to the right, and the cutout hole 7 The width becomes wider at the right end.

11 is a cam plate attached to the outside of the main body frame 2 so as to be rotatable by a caulking pin 12;
The caulking pin 12 is provided at a position facing the hole 4 across the trajectory drawn by the engagement pin 6 when the door 1 rotates. The inclined side edge of the cam plate 11 is bent to form a bent piece 13, the lower surface of which serves as a pin holding part 13a.
An engagement pin 6 is always in sliding contact with the lower end of the door, regardless of the open/closed position of the door. Further, one end of a spring 14 is connected to the upper part of the bent piece 13, and the other end of the spring 14 is appropriately fixed to an upper fixing member (not shown). That is, a counterclockwise rotational force is applied to the cam plate 11 and presses the engagement pin 6, and the door 1
is always given a rotational force in the closing direction. Furthermore, an arcuate slit 15 is formed in the cam plate 11 and has a slit 15 centered around the caulking pin 12, into which a stopper 16 formed by cutting and bending the body frame 2 is inserted, and the bottom 15a of the slit 15 and The rotation range of the cam plate 11 is restricted by engaging with the inlet protrusion 15b.

Now, in the above-described structure, when the handle 1a is pulled to open the door 1 to the fully open state, the engagement pin 6 moves into the hole 4, that is, the fulcrum A, as shown in FIGS. 2 and 3.
It moves in the notch hole 7 from C ₁ to C ₂ by drawing an arcuate trajectory B with the center at . Along with this, the cam plate 11 is pressed against the pin holding part 13a, and the crimping pin 1
2, the spring 14 is rotated clockwise around the fulcrum D while stretching the spring 14, and is rotated to the position shown in FIG. The pin holding portion 13a of the cam plate 11 always presses the engagement pin 6, but in the present invention, the pin holding portion 13a is tilted so that this pressing force P is directed toward the fulcrum A in the state shown in FIG. is selected, no moment is generated that would cause the door 1 to rotate, and the door 1 is maintained in the fully open state.

Next, when the door 1 is returned a little in the closing direction, the engagement pin 6 is
Since it moves to the right from the _C2 position, the direction of the pressing force P deviates from the fulcrum A and a moment is generated that tries to rotate the door 1 in the closing direction, and the door 1 automatically returns to the closed position. It is.

When you want to remove the door 1 for purposes such as cleaning, remove the hinge pin 5 and pull the side where the engagement pin 6 is not provided toward you.
The engagement pin 6 also comes out through the cutout hole 7, allowing the door 1 to be removed. Next, when reattaching the removed door 1, the cam plate 11 is pulled by the spring 14 and assumes the same posture as shown in FIG. 2 when the door 1 is closed.
It is not easy to directly insert the engagement pin 6 into position C1 in the figure while keeping the door ₁ in a closed position because the insertion portion is pinched and located in a position that is difficult to see. However, in the present invention, the width of the notch hole 7 becomes wider as it goes deeper, so first, with the door 1 open, the engaging pin 6 is inserted in front of the notch hole 7, that is, near position _C2 in the figure. Then, while using the lower edge of the notch hole 7 as a guide, the engaging pin 6 is moved to the C ₁ position by bypassing the tip of the pin holding portion 13a like C ₄ and C ₃ . Since the engaging pin 6 can now be inserted into the specified position without being obstructed by the cam plate 11, the door 1 can be easily attached to the main body frame 2 by aligning the holes 3 and 4 and inserting the hinge pin 5. Can be done.

As is clear from the above explanation, according to the present invention, the width of the notch hole in the main body frame into which the engaging pin provided on the door is inserted is determined by the engaging pin provided on the cam plate when the door is in the fully closed position. Since the dimensions are selected so that the tip of the pin holding part can be bypassed, the door can be easily installed regardless of the cam plate that provides rotational force in the closing direction of the door, improving work efficiency when installing and removing the door. This device is effective as a door opening/closing device for cooking appliances whose interiors tend to get dirty easily and whose doors often have to be removed for cleaning in order to keep them clean.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the main parts of an embodiment of the present invention, Fig. 2 is a side view of the main parts of the same as above, and Fig. 3 is a side view of the main parts when the door is fully opened to explain the operation. . 1... Door, 2... Body frame, 3, 4... Hole, 5...
... Hinge pin, 6 ... Engagement pin, 7 ... Notch hole,
11...Cam plate, 12...Caulking pin, 13a...
...Pin holding part, 14... Spring, 16... Stopper, A, D... Fulcrum, B... Locus of engaging pin, P
...Pushing force.

Claims (1)

[Scope of Claim for Utility Model Registration] To apply a rotational force in the closing direction to a pivotable door that is rotatably supported by the main body frame around a fulcrum and to keep the door open in the fully open position. In a door opening/closing device for a cooker equipped with an opening/closing control mechanism, an engaging pin provided on the door so as to protrude outward from a cutout hole in a main body frame at a position eccentric from a fulcrum, and a pin with which the engaging pin slides into contact. It has a presser part, is rotatably supported on the main body frame by a fulcrum placed opposite to the fulcrum of the door at a position across the movement locus of the engagement pin, and the direction in which the door is closed by the rotational force biasing means. The inclination of the pin holding part is selected so that the pressing force applied to the engaging pin is directed toward the fulcrum of the door when the door is fully open. An opening/closing control mechanism is provided on one side of the door, and includes a cam plate that stops rotating when the door is in a fully closed position, and a cutout hole in the body frame through which the engaging pin is inserted. A door opening/closing device for a cooking appliance, the width of which is large enough for an engaging pin to bypass a tip of a pin holding part when the door is in a fully closed position.