JP2912206B2 - Heater door opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening and closing device for a heating cabinet such as a grill and a gas oven incorporated in a gas table.

[0002]

2. Description of the Related Art In a grill, a gas oven, or the like incorporated in a gas table, a door of a heating cabinet is automatically rotated by opening and closing a door in a vertical direction as a work receiving tray is put in and out of the heating cabinet. As a door opening / closing device for a heating cabinet that opens and closes,
Conventionally, there are, for example, Japanese Utility Model Laid-Open No. 2-48709 (hereinafter referred to as Conventional Example 1) and Japanese Utility Model Laid-Open No. 1-100017 (hereinafter referred to as Conventional Example 2).

In the prior art example 1, a door open rod is provided at the tip of a slide rod interlocking with a water tray so as to rise obliquely rearward and upward, and when the water tray is pulled out, the grill door is raised by the door oven rod. It is structured to lift and open.

In addition, as shown in FIGS. 1 and 2 of the accompanying drawings, the prior art example 2 has an arm and a water tray fixed at a predetermined distance inside a door body. The handle is provided in association with a cam linked to the handle, and the arm is pushed to swing the door body to the open position as the cam moves outward in conjunction with the handle.

[0005]

In the prior art 1 of the prior art described above, when the slide rod and the door open rod advance forward from the stored state, the grill door is lifted by the door open rod and pivots counterclockwise in the drawing. When the slide rod and the door open rod are pushed backward from the open state, as the door open rod retreats, the lifting and holding thereof is released, and the door open rod is rotated by its own weight in the clockwise direction in the drawing to close.

Accordingly, when the grill door is opened, the door opening rod standing upward in an arc shape is pulled out to the front of the grill main body together with the water pan, so that when the object to be cooked such as fish is returned, the door opening rod is raised. The door open rod is in the way and it is difficult to return the door.It is difficult to use it in actual use, as the fingers may touch the door open rod and cause burns. There was a problem that there was no.

Further, in the prior art 2, when the water is moved out of the dish, the tip of the arm is pushed outward by the cam as the cam moves outward in conjunction with the handle, and the door body integral with the cam is pushed. The door body is pushed open to the open position via the arm, and the door body is closed via the arm when the water-filled dish is stored, in a manner opposite to that when the water-filled dish is pulled out.

Therefore, since the door body is opened and closed only by the contact operation in which the arm makes a circular movement with respect to the horizontal movement of the cam, the friction between the cam and the arm is combined with the holding operation of the door body in the open position by the arm. Not only was the resistance significantly increased, resulting in a problem in operability, but there was also a problem that the operation was not reliable.

In view of the above-mentioned problems of the prior art, the applicant has found that the door of the heating chamber can be opened and closed lightly and securely with opening / closing of the dish to be cooked in and out of the heating chamber. In addition, the inventors have previously filed an application for an invention of a door opening / closing device for a heating chamber which has excellent operability (Japanese Utility Model Application No. 3-9).
No. 9386 and Japanese Utility Model Application No. 4-30395).

In any of the inventions according to the prior applications, since the base end connecting portion of the connecting rod is only in contact with the back portion of the receiving tray, the connecting rod and the door when the grill or the like is not used for a long period of time. If the connecting rod sticks to the slide hole or the like and becomes difficult to separate due to oil contamination during use, the sticking will overcome the force of the firing and only the tray will be pulled out and the door will not open. May occur.

In view of the disadvantages of the invention according to the prior application, the present invention is particularly directed to forcibly moving the connecting rod with the receiving tray at least in the first half of the forward stroke when the receiving tray is pulled out. Another object of the present invention is to provide a door opening / closing device for a heating cabinet, in which sticking of a connecting rod or the like can be easily released and the interlocking of the tray and the door can always be reliably performed.

[0012]

In order to achieve the above object, a door opening / closing device for a heating chamber according to the present invention is, for example, as shown in FIGS.
The door 1 is provided so as to be interlocked with the tray 2 of the object to be cooked via the connecting rod 3 and the sprung 4 by the advance / retreat stroke a of the tray 2 in which the door 1 is fully opened from fully closed and fully opened to fully closed. A door opening and closing device for a heating cabinet in which the door 1 is opened and closed in a vertically open and closed direction when the tray 2 is moved into and out of the heating cabinet A by transmitting the advancing and retreating movement of the tray 2 to the rotating movement of the door at the time of transmission. A slide hole 5 for guiding the base end portion 3c of the connecting rod 3 is formed obliquely.
An engagement piece 6 is provided at the abutment portion on the back side of the tray, and the base end 3c of the connecting rod 3 is moved up and down by the oblique slide hole in the advancing / retreating stroke a of the tray 2 on the engagement piece 6 and automatically. In the forward stroke when the tray is pulled out, the base 3c of the connecting rod 3 is engaged with the engaging piece 6 at least in the first half of the forward stroke when the tray is pulled out, and the connecting rod 3 is forcibly disengaged by the receiving tray 2. , The engaging relationship is released in the latter half, and the base end 3c of the connecting rod 3 is automatically engaged with the engaging piece 6 in at least the latter half of the retracting stroke when the pan is stored. It is characterized by having a relationship.

[0013]

The door opening / closing device for a heating chamber according to the present invention is constructed as described above, so that when the pan 2 of the object to be cooked stored in the heating chamber A is pulled out forward, the forward / backward stroke a Since the base end 3c of the connecting rod 3 is engaged with the engaging piece 6 at least in the first half of the stroke, the connecting rod 3 is forcibly moved forward by the receiving tray 2.

Therefore, even if the connecting rod 3 or the like is stuck due to oil stains, the sticking is released at least in the first half of the forward stroke, and the door 1 is reliably opened.

When the tray 2 reaches the latter half of the forward stroke of the forward / backward stroke a, the base end 3c of the connecting rod 3 moves upward along the oblique slide hole 5, so that the base end 3c is engaged. The engagement between the tray 2 and the connecting rod 3 is released by disengaging from the piece 6, and thereafter, only the tray 2 is pulled out alone.

Next, when the tray 2 is stored in the heating chamber A, when the tray 2 reaches the second half of the retreating stroke of the reciprocating stroke a, the base end 3c of the connecting rod 3 is inserted into the oblique slide hole 5. Therefore, the base end 3c is engaged with the engagement piece 6 at least in the second half of the retraction stroke, and the tray 2 and the connecting rod 3 are integrally engaged. And
In the retreat stroke, the door 1 is closed via the connecting rod 3.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of an apparatus for opening and closing a door of a heating cabinet according to the present invention.

In the embodiment, the present invention is applied to a grill incorporated in a gas table.
Is a door of the heating cabinet, that is, a grill door for opening and closing the front opening 7 of the grill cabinet A. The grill door is pivotally mounted on the front opening 7 of the grill cabinet A so as to be freely rotatable around a support shaft 8, and is vertically moved with the support shaft 8 as a fulcrum. The front opening 7 of the grill storage A is securely opened and closed by a handle 9 of the grill pan 2 described later.

Reference numeral 2 denotes a pan for receiving the object to be cooked, that is, a grill pan, and a guide rail 1 provided on the bottom wall 10 of the grill storage A.
1 and slides in a straight line along the front of the grill warehouse A.
It is provided so that it can be easily maintained while maintaining a horizontal level.

A handle 9 is integrally attached to a front portion of the grill plate 2 via a mounting bracket 12.
When the grill plate 2 is accommodated in the grill storage A by providing the stopper projection 13 on the rear bottom surface, the stopper projection 13 engages with the locking projection 14 provided on the bottom wall 10 of the grill storage A. Then, the grill plate 2 is locked at a predetermined storage position.

The relationship between the grill door 1 and the handle 9 of the grill plate 2 is such that when the grill door 1 is fully closed (when the grill plate is stored), the lower end 1a of the grill door 1 is held by the handle of the grill plate 2. 9
, The front opening 7 of the grill warehouse A is securely closed without any gap, and the grill door 1 is closed.
Is fully open (when the grill pan is pulled out), the linear forward movement of the grill pan 2 and the rotation of the grill door 1 in the opening direction are synchronized so that the grill door 1 can be opened without any trouble. Has become.

Reference numeral 3 denotes a connecting rod, and the grill plate 2 and the grill door 1 are provided.
Are linked with each other at a constant forward / backward stroke a of the grill pan 2, and as shown in FIG.
b is inserted into the front end shaft hole 15a of the arm rod 15 provided on the grille door 1, and the base end 3c is inserted into the front-upward slanting slide hole 5 formed in the side wall 16 of the grill warehouse A, and Back part 2
a.

The slide hole 5 regulates the forward / backward movement of the connecting rod 3 and the forward / backward movement of the connecting rod 3 at a constant forward / backward stroke a.
Is moved up and down to engage and disengage with an engagement piece 6 described later. In this forward / backward stroke a, the connecting rod 3 and the grill pan 2 are interlocked via the connecting rod 3 and the spline 4. , The reciprocating motion of the grill pan 2 during the reciprocating stroke a is changed to the rotational motion of the grill door 1 and transmitted.
Is opened and closed.

The regulation of the fully open position (substantially horizontal position) and the fully closed position (substantially vertical position) of the grill door 1 is performed by a constant forward / backward stroke a by the slide hole 5 as in the embodiment. This may be performed by restricting the rotation angle of the grill door 1 to a certain angle.

The above-mentioned spur 4 performs the upward rotation of the grill door 1 and the holding of the open state of the grill door 1 during the forward stroke a of the grill plate 2 when the grill door 1 is fully opened.
The grill door 1 is opened in a direction in which the grill door 1 is opened by hooking both ends to a base rod 3c of the connecting rod 3 and a hanging rod 17 pivotally provided on the side wall 16 of the grill warehouse A, and the grill pan 2 in the stored state is pulled out. It is urged via the connecting rod 3.

Reference numeral 6 denotes an engagement piece integrally provided on the back surface 2a of the grill plate 2. The base end 3c of the connecting rod 3 inserted into and supported by the engagement piece 6 in the oblique slide hole 5 is a grill plate. In the second advancing / retreating stroke a, the oblique slide hole 5 moves up and down to automatically engage and disengage.

The oblique slide hole 5 and the base end 3 of the connecting rod 3
c and the engagement piece 6, at least in the first half of the forward stroke when the grill pan 2 is pulled out,
Is moved downward along the oblique slide hole 5 so that the engagement piece 6 integrated with the grill pan 2 and the base end 3 of the connecting rod 3 are moved downward.
c, the connecting rod 3 is forcibly moved by the grill pan 2, and in the latter half of the forward stroke, the base end portion 3c of the connecting rod 3 moves upward along the oblique slide hole 5 to engage the engaging piece. 6, the base end portion 3 c is disengaged, and the grill pan 2 can be moved separately from the connecting rod 3.
In addition, in the retreat stroke when the grill pan 2 is stored, at least in the latter half, the proximal end 3c of the connecting rod 3 moves downward along the oblique slide hole 5, and the proximal end 3c is engaged with the engaging piece 6. It is a relationship that is combined.

In the figure, 18 is a grill burner, 19 is an exhaust passage, 20 is an exhaust port, 21 is a gas stove santoku, and 22 is a pot placed on santoku.

In the above structure, the operation will be described below. The grill plate 2 is housed in the grill storage A, and the stopper projection 13 is engaged with the locking projection 14 and locked at a predetermined position. When the grill door 1 is in the substantially vertical closing position, the grill door 2 is urged in the opening direction (clockwise direction in the figure) by the sprung 4 through the connecting rod 3, and the grill plate 2 is also pulled out in the drawing direction (left side in the figure). It is energized (see the position of the solid line in FIG. 1).

Therefore, when using the grill, the grill storage A
When the grill plate 2 housed and locked inside is pulled forward with the front handle 9, the grill plate 2 is unlocked by the stopper projection 13 extending beyond the locking projection 14 and straightened. Be withdrawn.

In at least the first half of the forward stroke of the forward / backward stroke a when the grill pan 2 is pulled out, the base end 3c of the connecting rod 3 moves downward along the oblique slide hole 5 and is integrated with the grill pan 2 The base 3c of the connecting rod 3 is engaged with the engaging piece 6 of the above, and the connecting rod 3 is forcibly moved forward by the grill pan 2.

Therefore, even if the connecting rod 3 and the like are stuck due to oil stains or the like, the sticking is released in at least the first half of the forward stroke, so that the grill pan 2 and the connecting rod 3 exert a pulling force of the sprung 4 in a certain forward stroke. To move to the left in the figure, and push up and rotate the grill door 1 clockwise with the pulling force of the sprung 4 about the support shaft 8 as a fulcrum to make it fully open (see the position of the chain line in FIG. 1). .

By the time the connecting rod 3 reaches the end of the forward stroke, the base end 3c of the connecting rod 3 moves upward along the oblique slide hole 5 to be disengaged from the engaging piece 6, and the engaging piece 6 A gap b is formed between the grill plate 2 and the engagement relationship between the grill plate 2 and the connecting rod 3 is released, so that after the base end 3c of the connecting rod 3 reaches the end of the forward stroke and its movement is restricted, the grill plate 2 2 alone is pulled out to a predetermined position, and escapes from the grill storage A as needed.

When the grill plate 2 is stored in the grill storage A after water is put into the drawn grill plate 2 and the food such as fish is placed on the grill, the grill plate 2 is placed on the guide rail 11. When the grill pan 2 is pushed straight back along the rear side, the rear part 2a of the grill pan 2 and the base end 3c of the connecting rod 3 come into contact with each other when the grilling pan 2 enters the retreat stroke, and the grill pan 2 and the connecting rod 3 are integrally formed. And retreats against Origination 4.

At least in the latter half of the retraction stroke of the advancing / retreating stroke a when the grill pan 2 is stored, the base end 3c of the connecting rod 3 is lowered along the oblique slide hole 5 into the engaging piece 6 integral with the grill pan 2. To be engaged and ready for the next withdrawal.

That is, when the grill pan 2 reaches the retreat stroke, the connecting rod 3 moves integrally with the grill pan 2, and in the latter half thereof, the base end 3c of the connecting rod 3 moves downward along the oblique slide hole 5. Moving. Then, in the fixed retreat stroke, the connecting rod 3 is moved rightward in the figure by the grill pan 2, and the grill door 1 is pulled down and rotated counterclockwise in FIG. 4 is given a constant tensile force (see the position of the solid line in FIG. 1).

When the grill door 1 is fully closed by the retreat stroke, the grill plate 2 is locked with the stopper projection 13 extending beyond the engagement projection 14 and locked in the predetermined storage position.

[0038]

The door opening / closing device for a heating cabinet according to the present invention comprises:
Since the connecting rod is forcibly moved by the receiving tray at least in the first half of the forward stroke when the tray is pulled out, if the connecting rod sticks when it is not used for a long period of time, or if the connecting rod sticks due to oil stains even during use, Even in this case, there is an effect that the receiving tray and the connecting rod are always interlocked and the door can always be reliably opened.

Further, as the engaging / disengaging means, the base end of the connecting rod which moves up and down by the oblique slide hole is engaged with and disengaged from the engaging piece provided on the tray, so that the structure becomes extremely simple and Since the operation is light and reliable, it is easy to use.

[Brief description of the drawings]

FIG. 1 is a partially cut-away side view showing one embodiment of a door opening / closing device for a heating cabinet according to the present invention.

FIG. 2 is a schematic plan view of only a main part.

FIG. 3 is a cross-sectional view of only an engaging and disengaging portion.

[Explanation of symbols]

 A Heating cabinet (grill cabinet) 1 Door (grill door) 2 Receiving tray (grill dish) a Reciprocating stroke 3 Connecting rod 4 Spring 5 Slide hole 6 Engagement piece

Claims (1)

(57) [Claims] A door of a heating chamber is provided so as to be interlockable with a pan of a dish to be cooked through a pan and a connecting rod and a sprung and retractable stroke of a pan from a fully closed state to a fully opened state and a fully closed state from a fully opened state. A door opening / closing device for a heating chamber, in which the pan is opened and closed in a vertical direction when the pan is moved into and out of the heating chamber by transmitting the advancing and retreating movement of the pan to the rotating movement of the door, and A slide hole for guiding the end portion is formed obliquely, and an engagement piece is provided at a back contact portion with the connecting rod of the saucer,
The engaging piece is provided such that the base end of the connecting rod moves up and down by the oblique slide hole in the forward and backward strokes of the pan and automatically engages and disengages. At least in the first half, the base end of the connecting rod engages with the engaging piece to forcibly move the connecting rod with the pan, and in the second half, the engagement relationship is released, and in the retreat stroke when the pan is stored, A door opening / closing device for a heating cabinet, wherein a base end portion of a connecting rod is automatically engaged with an engagement piece at least in a latter half thereof.