JPH064512U - Door opening / closing device for heating cabinet - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the assembly and installation of the interlocking mechanism between the grill plate and the grill door. [Structure] A push rod 3 and a drive rod 5 are provided on the front side of the grill cabinet A.
Further, a link mechanism B composed of the movable rod 6 and the movable rod 6 is provided, and the link mechanism B transfers the forward / backward movement of the grill pan 1 with a constant stroke a by changing the movement of the grill door 2 from fully closed to fully open and from fully open to fully closed. To do.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door opening / closing device for a heating cabinet such as a grill and a gas oven incorporated in a gas table.

[0002]

[Prior art]

 In a grill, gas oven, etc. built into a gas table, the heating cabinet door opens and closes automatically as the cooking cabinet tray is moved in and out of the cooking cabinet. As such a door opening / closing device, there are, for example, Japanese Utility Model Laid-Open No. 2-487009 (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 above-mentioned conventional example 1, a door open rod is provided at an end portion of a slide rod that interlocks with a water receiving tray so as to stand in a bow shape obliquely rearward and upward. It is structured so that it can be lifted up and opened.

The conventional example 2 is, in particular, as shown in FIGS. 1 and 2 of the accompanying drawings, an arm and a water tray fixed at a predetermined distance inside the door body. The handle is linked to a cam that is interlocked with the handle, and the arm is pushed to swing to the open position as the cam moves outward in conjunction with the handle.

[0005]

[Problems to be solved by the device]

 In the conventional example 1 of the above-mentioned conventional technique, when the slide rod and the door open rod advance from the stored state to the front, the grill door is lifted by the door open rod and pivoted counterclockwise in the drawing to open the grill door. When the open rod is pushed rearward from the open state, as the door open rod retreats, its lifting hold is released, and the door open rod is rotated by its own weight in the clockwise direction in the figure to be closed.

Therefore, when the grill door is opened, the door open rod that is erected upward in a bow shape is pulled out to the front of the grill main body together with the water tray, so that, for example, when the cooked food such as fish is returned. The door open rod is a hindrance, making it difficult to return the door open rod, etc., and it may cause burns when the door open rod is touched by a fingertip, etc. There was a problem that there was no certainty.

Further, in Conventional Example 2, as the cam moves outward in conjunction with the handle when the water tray is pulled out, the tip of the arm is pushed outward by the cam, and the door body integrated with this is pushed. The door is pushed open to the open position via the arm and the door body is closed via the arm when the water tray is stored, which is the reverse of the operation when the water tray is pulled out.

Therefore, since the door body is opened and closed only by the contact movement 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 accompanied by the holding operation in the open position of the door body by the arm. Not only did the resistance increase significantly and there was a difficulty in operability, but there was also the problem that its operation was not reliable.

Therefore, in view of the above problems of the conventional technology, the applicant uses the door of the heating cabinet lightly and surely opened and closed when the tray for the object to be processed of the heating cabinet is taken in and out. I have previously filed a proposal for a door opening / closing device for a heating cabinet that is easy to operate and has excellent operability (Practical application Nos. 3-99386 and 4-30395).

In each of the inventions according to the above-mentioned prior applications, since the connecting rod in the interlocking mechanism of the saucer and the door, the link mechanism, etc. are provided in the rear part of the heating cabinet, for example, a double-sided grill of a gas table, etc. As described above, when there is an obstacle such as a burner in the depth direction of the heating chamber, it is difficult to accommodate the connecting rod and the link mechanism of the driving mechanism.

In view of the difficulty of the invention according to the prior application, the present invention eliminates the above-mentioned difficulty by placing the interlocking mechanism of the saucer and the door in the front side of the heating cabinet without obstacles such as a burner. It aims to provide a door opening / closing device for the heating cabinet.

[0012]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the door opening / closing device of the heating cabinet of the present invention is, for example, as shown in FIGS. In the door opening / closing device of the heating cabinet in which the door 2 of the heating cabinet A is opened and closed in a single opening direction in the vertical direction, the saucer 1 and the door 2 are placed at a constant stroke a of the saucer 1 on the front side of the heating cabinet A. The main feature is that the door 2 is connected continuously by a mechanical interlocking means B such as a link mechanism for converting the forward / backward movement into a rotational movement from the fully closed to the fully open and the fully open to the fully closed.

As the mechanical interlocking means B, a tray 1 and a push rod 3 interlocking only with its advancing / retreating stroke a, a base end of which is pivotally supported and a tip of which is biased in a pull-out direction of the tray 1 by a spring 4 or the like. It is also characterized by using a link mechanism in which the movable rod 5 and the end of a movable rod 6 whose one end is pivotally supported by the door 2 are gathered and pivoted.

[0014]

[Action]

 Since the door opening / closing device of the heating cabinet of the present invention is configured as described above, when the dish tray 1 to be cooked contained in the heating cabinet A is linearly drawn forward, the initial constant forward stroke a In the above, the mechanical interlocking means B such as a link mechanism interlocks the pan 1 and the door 2 to open the door 2 from the fully closed state.

That is, when the tray 1 is pulled out by a constant stroke a, the pulling force of the tray 1 is promoted by the driving force of the spring 4 and the like through the driving rod 5 and the pushing rod 3, and the movable rod 6 is used to move the door 2 Push it up to open it to the full open position.

When the door 2 reaches the fully opened position, the movement of the mechanical interlocking means B is stopped, the door 2 is held at the fully opened position by the pulling force of the spring 4, etc., and thereafter only the tray 2 is pulled out independently. .

Next, when the saucer 2 is stored in the heating cabinet A, the saucer 1 and the door 2 are interlocked with each other through a mechanical interlocking means B such as a link mechanism at a constant backward stroke a 2 in the latter half. From fully open to fully closed.

That is, while the tray 1 is pushed in by a constant stroke a in the latter half, a constant pulling force is applied to the spring 4 by the pushing rod 3 which is in communication with the tray 1 via the drive rod 5, and the tray 4 is movable. The door 2 is pulled down in a one-sided open state through the rod 6 to be fully closed, and the tray 1 is locked at the fully closed position of the door 2.

[0019]

【Example】

 An embodiment of a door opening / closing device for a heating cabinet according to the present invention will be described below with reference to the drawings.

The embodiment is applied to a grill built in a gas table, and in FIGS. 1 to 3, reference numeral 1 is a dish pan, that is, a grill pan, which is a heating chamber of the grill, that is, a grill chamber. A slides linearly along a guide rail 8 provided on the bottom wall 7 of A, so that storage in the grill cabinet A and withdrawal from the grill cabinet A can be easily performed from the front opening 9 of the grill cabinet A. It is provided.

A handle 10 is integrally attached and fixed to the front part of the grill plate 1 via a mounting bracket 11, and a protrusion 12 for a stopper is provided on the bottom surface of the rear part of the grill plate 1 so that the grill plate 1 can be attached to the grill cabinet A. When stored inside, the stopper projection 12 is engaged with the locking projection 13 provided on the bottom wall 7 of the grill cabinet A so that the grill plate 1 is locked at a predetermined storage position. There is.

Reference numeral 2 denotes a door of a heating cabinet, that is, a grill door, which is pivotally installed at a front opening 9 of the grill cabinet A by a support shaft 14, and the grill door 2 has a single-opening shape in a vertical direction with the support shaft 14 as a fulcrum. The front opening 9 of the grill cabinet A is opened and closed by the handle 10 of the grill plate 1.

The relationship between the grill door 2 and the handle 10 is that the lower end portion 2 a of the grill door 2 is provided on the handle 10 of the grill plate 1 when the grill door 2 is fully closed (when the grill plate is stored). When the grill door 2 is fully opened (when the grill plate is pulled out), the front opening 9 of the grill cabinet A is securely closed so that there is no gap. The linear advancing operation and the rotating operation of the grill door 2 in the opening direction are synchronized with each other so that the grill door 2 can be opened without any trouble.

Reference numeral B denotes a mechanical interlocking means such as a link mechanism, which is incorporated on both front sides of the grill cabinet A. The structure is such that the tip of the grill tray 1 is brought into contact with the inner surface 10 b of the handle 10 of the grill tray 1. The push rod 3 that interlocks with the grill plate 1 only for the advancing / retreating stroke a, and the base end swingably and pivotally supported by the support shaft 15, and the tip end pushes the grill door 2 with one end hooked on the base extension piece 16. A drive rod 5 urged in the pulling-out direction of the grill plate 1 by a spring 4 having an elastic force necessary for raising and releasing and holding the opening, and a lower portion of the spindle 14 of the grill door 2 at one end. A movable rod 6 pivotally supported by a support shaft 17, and the other ends of the pushing rod 3, the drive rod 5 and the movable rod 6 are gathered together and pivotally supported by a common support shaft 18. It has a mechanism.

The advancing / retreating stroke a of the grill plate 1 is determined by, for example, restricting the movement of the link mechanism B to a constant value by any means.

The mechanical interlocking means is not limited to the link mechanism B having the above structure.

In the figure, 22 is a grill burner, 23 is an exhaust passage, 24 is an exhaust port, 25 is a gas table Gotoku, and 26 is a pan placed on Gotoku.

The operation of the above-mentioned structure will be described below. The grill plate 1 is housed in the grill cabinet A, and the stopper projection 12 is engaged with the locking projection 13 to be locked at a predetermined position. When the grill case 2 is in a substantially vertical closed position, it is urged by the spring 4 in the opening direction (clockwise direction in the drawing) through the drive rod 5 and the movable rod 6 of the link mechanism B, and is pushed. The moving rod 3 is pressed against the inner surface 10b of the handle 10 to urge the grill plate 1 in the pull-out direction (see the position indicated by the solid line in FIG. 1).

Therefore, when the grill plate 1 in the storage lock state is pulled forward while holding the handle 10 when the grill is used, the stopper protrusion 12 of the grill plate 1 holds the locking protrusion 13. It unlocks the cross lock and is pulled out linearly.

In the constant forward stroke a which is regulated by the initial elongated guide hole 21 in the pulling-out operation of the grill plate 1, the driving rod 5 is rotated counterclockwise in the drawing by the pulling driving force of the spring 4 and pushed. The moving rod 3 pushes the inner surface 10b of the handle 10 to promote the pulling force of the grill plate 1, and the movable rod 6 pushes up the grill door 2 in the clockwise direction as shown in the drawing with the spindle 14 as a fulcrum to fully open it (( (See the position of the chain line in FIG. 1).

When the grill door 2 is fully opened by the forward stroke a of the grill plate 1, the movement of the link mechanism composed of the push rod 3, the drive rod 5 and the movable rod 6 is also stopped, and the grill door 2 is pulled by the pulling force of the bar 4. Is held in the fully open position.

After that, when the grill plate 1 is successively pulled out forward, only the grill plate 1 is pulled out to a predetermined position while keeping the grill door 2 in the fully opened position, and the grill plate 1 is escaped from the grill cabinet A as necessary.

After putting water in the pulled-out grill plate 1 and placing a food item such as fish on the grill, when the grill plate 1 is stored in the grill cabinet A, the grill plate 1 is placed on the guide rail 8. When the grill plate 1 is linearly pushed backward along the above, when the grill plate 1 enters a constant retreat stroke a, the tip of the pushing rod 3 waiting in the open position comes into contact with the inner surface 10b of the handle 10, and The drive rod 5 is rotated clockwise in the drawing by the push rod 3 that is interlocked with the handle 10 at the backward stroke a to apply a constant tensile force to the spring 4, and the grill door 2 is pulled down via the movable rod 6. Then, the support shaft 14 is pivoted counterclockwise in the drawing to a substantially vertical fully closed position (see the solid line position in FIG. 1).

When the grill door 2 is fully closed by the retreat stroke a of the grill plate 1, the movement of the link mechanism composed of the push rod 3, the drive rod 5 and the movable rod 6 is stopped, and the grill plate 1 is used for the stopper. The protrusion 12 is engaged over the locking protrusion 13 and is locked in a predetermined storage position (see FIG. 1).

With the above series of operations, the grill door 2 is automatically opened and closed by rotating the grill door 2 in the vertical direction via the link mechanism when the grill plate 1 is taken in and out of the grill cabinet A. The link mechanism that links the grill plate 1 and the grill door 2 is compactly installed on both front sides of the grill cabinet A.

[0036]

[Effect of device]

 The door opening / closing device of the heating cabinet according to the present invention is provided with a mechanical interlocking mechanism such as a link mechanism for interlocking the saucer and the door on the front side of the heating cabinet without obstacles such as a burner. Even if there is an obstacle such as a burner in the depth direction (rear side) of the heating cabinet like the above, the assembly and installation of the burner becomes easy.

If a link mechanism including a push rod, a drive rod and a movable rod is used as the mechanical interlocking means, the structure is extremely simple and the operation is light and reliable.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view 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.

[Explanation of symbols]

 A heating cabinet (grill cabinet) 1 saucer (grill tray) 2 door (grill door) a stroke of advance / retreat B mechanical interlocking mechanism (link mechanism) 3 push rod 4 spring 5 drive rod 6 movable rod

Claims (2)

[Scope of utility model registration request] 1. A door opening / closing device for a heating cabinet in which the door of the cooking cabinet is opened and closed in a vertical direction with opening and closing of the dish to be cooked in and out of the cooking cabinet. The door of the heating cabinet is characterized in that it is continuously connected by a mechanical interlocking means such as a ring mechanism for transmitting the forward / backward movement of the tray in a constant stroke in a manner of changing the movement from the fully closed to the fully opened and the rotational movement from the fully opened to the fully closed. Switchgear. 2. A mechanically interlocking means, a push rod that interlocks with a tray and an advance / retreat stroke thereof, and a drive rod whose base end is pivotally supported and whose tip is biased in a pull-out direction of the tray by a spring or the like.
2. The door opening / closing device for a heating cabinet according to claim 1, wherein a link mechanism is used in which the ends of movable rods, one end of which is pivotally supported by the door, are assembled and pivotally supported.