JPH0613730U - Door opening / closing device for heating cabinet - Google Patents

Abstract

(57) [Summary] [Purpose] To improve usability by stabilizing the open / closed state of the grill door. [Structure] When the opening / closing operation of the grill door 2 by the advancing / retreating stroke a of the grill plate 3 is accelerated in the latter half of the advancing / retreating stroke a, the force of the rib 5 is reversed and promoted, and The grill door 2 is held at the open / closed position and the grill plate 3 is held at the storage position.

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, and when the water receiving tray is pulled out, the grill door is opened by the door open rod. 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, the door is opened and held at the open position by a mechanical drive means such as a spring, so that even when the door is closed, Since the saucer is pushed forward by a mechanical drive means such as a spring, a locking mechanism was necessary to prevent the saucer from popping out.

Further, since the base end portion of the connecting rod is only in contact with the back surface of the tray, the connecting rod may stick to the slide hole or the like and become difficult to separate due to oil stains or the like.

In view of the problems of the invention of the above-mentioned prior application, the present invention eliminates the need for a lock mechanism when storing a saucer, and stabilizes the open / closed state of the door to improve the usability of the door opening / closing of the heating cabinet. The purpose is to provide the device.

[0013]

[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, for example, as shown in FIGS. The door 2 is provided via the receiving plate 3 and the connecting rod 4 so as to be interlockable only with the forward / backward stroke a from full close to full open and from full open to full close, and the forward / backward movement of the tray 3 at the forward / backward stroke a is performed by the rotary movement of the door 2. In the door opening and closing device of the heating cabinet, the door 2 is opened and closed in a vertical direction by opening and closing the receiving tray 2 in and out of the heating cabinet 1 by transmitting it to the heating tray 1. The interlocking portion of the tray 3 is provided with a spring 5 in which the direction of the force is reversed during the forward / backward movement stroke a of the saucer 3. The spring 5 facilitates opening / closing of the door 2 and advance / retreat of the saucer 3, and the opening / closing position of the door 2 and the saucer. The main feature is that it is held at the storage position of 3.

In the first half of the forward / backward stroke a of the tray 3, the tray 3 and the connecting rod 4 are forcibly moved against the spring 5, and in the latter half, the force of the spring 5 reverses to move the tray 3 and the door 2. It is characterized in that it is configured to be pushed through the connecting rod 4.

Further, the spring 5 is hooked by applying a slight tensile force to the pivotal support portion 6 of the door 2 and the connecting rod 4 and the fixed hook portion 7, and the fixed hook portion 7 supports the pivot point P of the spring 5 and the pivot portion 8. It is characterized in that the line b connecting the fulcrums K of the door 2 is located between the changing positions A and B of the pivotal support portion 6 with the connecting rod 4 associated with the opening and closing of the door 2.

Further, in the case where the door 2 can be opened / closed by the advancing / retreating stroke a of the tray 3 through the link mechanism D with a substantially constant operating force, the spring 5 is fixed to the fixed side link 9 and the movable side of the link mechanism D. A line that connects the fulcrum P of the spring 5 by the fixed hook 12 and the fulcrum K of the fixed side link 9 by the pivot 13 by applying a slight pulling force to the pivot 11 and the fixed hook 12 of the link 10. It is characterized in that b is positioned between the fluctuation positions A and B of the pivot portion 11 of the link mechanism D as the tray 3 moves back and forth.

[0017]

[Action]

 Since the door opening / closing device of the heating cabinet of the present invention is configured as described above, when the saucer 3 of the food to be cooked stored in the heating cabinet 1 is linearly pulled forward, the forward stroke of the forward / backward stroke a 1 In the first half, the receiving tray 3 and the connecting rod 4 are integrally engaged with each other, and the connecting rod 4 is forcibly moved forward by the receiving tray 3 against the spring 5, so that the door 2 is opened halfway.

At a certain position where the forward stroke of the tray 3 moves from the first half of the forward stroke to the latter half of the forward stroke, the bar 5 connects the fulcrum P of the bar 5 and the fulcrum K of the door 2, that is, the reversal point. When it exceeds, the pulling force of the spring 5 is reversed and pushes the receiving tray 3 forward through the connecting rod 4 to facilitate the pulling out of the receiving tray 3.

When the saucer 3 reaches the end of the forward stroke, the door 2 is fully opened, and the engagement between the saucer 3 and the connecting rod 4 is disengaged. After that, only the saucer 3 is pulled out independently, and the door 2 is started. It is held in the fully open position with a pulling force of 5.

Next, when the saucer 3 is stored in the heating chamber 1, when the saucer 3 reaches the advancing / retreating stroke of the advancing / retreating stroke a, in the first half of the retreating stroke, the connecting rod 4 is opposed to the spring 5 by the saucer 3. And forcibly move it backward, and the tray 3 and the connecting rod 4 are integrally engaged by the end thereof, and the door 2 is semi-closed.

When the bar 5 crosses the line b connecting the fulcrum P of the bar 5 and the fulcrum K of the door 2, that is, the reversal point at a position where the first half to the second half of the backward stroke are moved, the pulling force of the bar 5 is reversed. Then, the receiving tray 3 is pushed rearward through the connecting rod 4 to promote the pushing of the receiving tray 3, and the receiving tray 3 is held at a constant storage position by the pulling force of the spring 5.

In the tray storing operation, when the tray 3 reaches the end of the backward stroke, the door 2 is fully closed and is held in the fully closed position by the pulling force of the spring 5.

[0023]

【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 incorporated in a gas table. In Embodiment 1 shown in FIGS. 1 to 3, 1 is a grill heating cabinet, that is, 2 is a door of the heating cabinet 1. That is, in the grill cabinet, the front opening 14 of the grill cabinet 1 is opened and closed, and is pivotally mounted on the front opening 14 of the grill cabinet 1 by a support shaft 8 in the vertical direction with the support shaft 8 as a fulcrum. It is provided so that it can be opened and closed in a one-sided open manner, and the front opening 14 of the grill cabinet 1 can be opened and closed surely with a handle 15 of a grill plate 3 described later.

Reference numeral 3 denotes a saucer for the food to be cooked, that is, a grill pan, which is linearly slid along a guide rail 16 provided on the bottom wall of the grill cabinet 1 for storage in the grill cabinet 1 and a grill cabinet. It is provided so that the drawer 1 can be easily accessed from the front opening 13 of the grill cabinet 1.

A handle 15 is integrally attached to the front portion of the grill plate 3 via a mounting bracket 17, and the relationship between the handle 15 and the grill door 2 is defined when the grill door 2 is fully closed (the grill plate is At the time of storage, the lower end 2a of the grill door 2 is brought into contact with the inside of the protrusion 18 provided on the handle 14 of the grill pan 3 to close the front opening 14 of the grill cabinet 1 without any gap, and the grill door 2 is closed. When fully open (when the grill pan is pulled out), the linear movement of the grill pan 3 and the pivoting movement of the grill door 2 in the opening direction are synchronized with each other to open the grill door 2 without any trouble. It has become so.

Reference numeral 4 denotes a connecting rod for interlocking the grill plate 3 and the grill door 2 with a certain forward / backward stroke a of the grill plate 3, and as shown in FIG. The front end shaft portions 6 of both side portions 4a are inserted into the arm rod 19 provided on the grill door 2, and the base end portion 4b is formed only on the front half of the side wall 20 of the grill case 1 which is formed in a U-shape in a plan view. It is inserted through a slanted slide hole 21 on the front upper side and is brought into contact with the back surface portion 3a of the grill plate 3 in relation to it.

The slide hole 21 regulates the forward / backward guide of the connecting rod 4 and the forward / backward movement of the connecting rod 4 to a constant forward / backward stroke a, and at the forward / backward stroke a, the base end portion 4b of the continuous rod 4 is moved. By engaging with or disengaging the grill plate 3 and the connecting rod 4 by moving up and down in the slanted portion 21a and engaging and disengaging the base end 4b with the engaging piece 22 provided on the back surface 3a of the grill plate 3. Then, in this advancing / retreating stroke a, the connecting rod 4 and the grill plate 3 are interlocked with the connecting rod 4 and the spring 5, and the advancing / retreating motion of the grill plate 3 in the advancing / retreating stroke a is converted into the rotary motion of the grill door 2 and transmitted. The grill door 2 is designed to be opened and closed.

Note that the fully open position (generally horizontal position) and the fully closed position (generally vertical position) of the grill door 2 are regulated by a constant forward / backward stroke a by the slide hole 21 as in the first embodiment, and are not shown. Alternatively, the rotation angle of the grill door 2 may be restricted to a certain angle. Further, the engagement and disengagement between the grill plate 3 and the connecting rod 4 is performed by vertically moving the base end portion 4b of the connecting rod 4 by the slanted portion 21a of the slide hole 21 as in the first embodiment, and the base of the connecting rod 4 is moved. A magnet may be provided at the end 4b and the magnet may be engaged and disengaged by a structure in which the magnet is attracted to the back surface of the grill plate 3 or other means.

Reference numeral 5 facilitates opening and closing of the grill door 2 and movement of the grill plate 3 by the stroke a of the grill plate 3, and holds the grill plate 2 at the open / close position and the storage position of the grill plate 3. In the first embodiment, the tension spring 5 is used and is provided in the interlocking portion on the grill door side.

That is, both ends of the pulling bar 5 are pivotally supported by the arm rod 19 of the grill door 2 and the tip shaft portion 6 of the connecting rod 4, that is, the tip shaft portion 6 and the hook rod 7 that can be fixed to the body 23. The pulling bar 5 is attached by applying a slight pulling force (elastic force) to the pulling bar 5, and the fulcrum P of the pulling bar 5 by the hooking rod 7 and the fulcrum K of the grill door 2 by the supporting shaft 8 are connected. Line b, that is, a position where the reversal point of the tension bar 5 is pivotally supported by the connecting rod 4 when the grill door 2 is opened and closed, that is, the tip shaft portion 6 of the connecting rod 4 keeps the same locus and fluctuates left and right. It is positioned between A and B so that the force of the tension spring 5 is reversed during the forward and backward stroke a of the grill plate 3.

In the figure, 24 is a grill burner, 25 is an exhaust passage, 26 is an exhaust port, 27 is a gas stove Gokutoku, and 28 is a pot placed on Gokutoku.

The operation of the configuration of the first embodiment will be described below. When the grill plate 3 is stored at a predetermined position in the grill cabinet 1, the grill door 2 is in a substantially vertical closed position. Yes, it is held in each position by the tension spring 5.

Therefore, when using the grill, the grill tray 3 stored and held in the grill cabinet 1 is pulled out linearly forward with the handle 15 at the front portion, and the forward and backward strokes a of the grill tray 3 are advanced. In the first half a'of the stroke, since the slide hole 21 is horizontal, the locking piece 22 of the grill plate 3 is engaged with the base end portion 4b of the connecting rod 4, and the grill plate 3 pulls the connecting rod 4 to start the movement. Forcibly move forward against 5 (while applying a predetermined tensile force to the spring 5) and at the same time open the grill door 2 to about half.

At a certain position where the forward stroke of the grill pan 3 moves from the first half movement of the forward stroke to the rear half a ″, the tension bar 5 connects the fulcrum P of the tension bar 5 and the fulcrum K of the grill door b, That is, when the reversal point is exceeded, the tension force accumulated in the first half of the tension rod 5 is reversed and the grill door 2 is pulled in the opening direction, and the grill plate 3 is pushed forward through the connecting rod 4. Promote its opening and withdrawal.

In the latter half operation, the grill door 2 is fully opened and is held in the fully opened position by the pulling force of the tension bar 5, and the latter half a ″ is the forward slanted portion 21 a of the slide hole 21 and the base of the connecting rod 4. Since the end portion 4b moves upward and a gap c is formed between the end portion 4b and the locking piece 22 of the grill plate 3, the base end portion 4b of the connecting rod 4 is reliably disengaged from the locking piece 22. Only the grill plate 3 is pulled out by itself, and it is made to escape from the grill case 1 if necessary.

Next, when the grill plate 3 is stored in the grill cabinet 1, the grill plate 3 is linearly pushed rearward along the guide rails 16, and the grill plate 3 is retracted by its forward / backward stroke a. When the stroke is reached, the back surface portion 3a of the grill plate 3 contacts the base end portion 4b of the connecting rod 4, and thereafter, the connecting rod 4 is pulled by the grill plate 3 to resist the ridge 5 (give a traction force to the ridge 5). Meanwhile, the first half a "of the backward stroke is forcibly moved backward to close the grill door 2 to about a half quantile.

In the first half operation, the base end portion 4b of the connecting rod 4 is moved downward by the forward slanted portion 21a of the slide hole 21 to be engaged with the locking piece 22 of the grill plate 3, and thereafter, the grill plate 3 And Renren 4 move backward together.

When the pulling bar 5 crosses a line b connecting the fulcrum P of the pulling bar 5 and the fulcrum K of the grill door 2, that is, the reversal point, at a certain position where the operation moves from the first half operation to the second half a ′, thereafter, it is stored in the first half. The pulling force of the pulled tension bar 5 reverses and pulls the grill door 2 toward the closing direction, and the grill plate 3 is pushed rearward through the connecting rod 4 to facilitate the closing and pushing of the grill plate 3 and the grill plate 3 is moved to a predetermined position. When it reaches the storage position, the grill plate 3 is held at that position by the pulling force of the pulling bar 5.

At the same time that the grill plate 3 is stored and held, the grill door 2 is fully closed and is held in the fully closed position by the pulling force of the pulling bar 5.

Next, a second embodiment of FIG. 4 is a link mechanism for correcting the operation force to a substantially constant value from the fully closed state to the fully opened state of the grill door 2 provided at the interlocking portion of the grill door 2 and the grill plate 3. The link mechanism D is a fixed side link 19 which is pivotally supported at its base end by a pivot 13, and a base end at the tip of the fixed side link 9 is a pivot 11. The pivoting tip consists of a movable side link 10 pivotally supported on the base end 4b of the connecting rod 4, and the pivot 11 of both links 9, 10 and the hooking rod 12 fixed to the body both ends of the pulling bar 5. Is applied with a slight pulling force, and the line b connecting the fulcrum P of the spring 5 by the hooking rod 12 and the fulcrum K of the fixed side link 9 by the pivot 13 is linked with the advancing / retreating of the grill plate 3. It is configured to be positioned between the left and right fluctuation positions A and B of the axis 11.

In the configuration of the second embodiment, the pulling bar 5 serves as the fulcrum P at a certain position from the first half to the second half of the forward or backward stroke of the forward or backward stroke a of the grill tray 3 when the grill tray 3 is pulled out or stored. When the line b connecting the fulcrums K of the fixed-side link 9, that is, when it exceeds the reversal point, the pulling force of the pulling bar 5 assists the movement of the grill door 2 and the grill plate 3, and the grill door 2 Is held in its open / closed position and the grill plate 3 is held in its stored position.

The other configurations and operations in the second embodiment are the same as the configurations and operations in the first embodiment described above, and the same parts are denoted by the same reference numerals and the description thereof is omitted.

[0044]

[Effect of device]

 The door opening / closing device of the heating device according to the present invention is convenient because the opening / closing of the door associated with the loading / unloading of the tray is facilitated by the movement of the tray in the latter half of the stroke of the tray, as well as the opening / closing movement of the tray. Is.

Further, since the holding at the receiving tray storage position is performed by the spring, not only a special locking mechanism is unnecessary, but also the receiving tray is safe and easy to use without danger of accidentally popping out.

Furthermore, since the door is held in the open / closed position reliably by the spring, the stability in use is doubled together with the holding of the tray.

If the tray and the connecting rod can be engaged and disengaged reliably by vertically moving the base end portion of the connecting rod with the slide hole, the sticking of the connecting rod and the like due to oil stains can be dealt with, It is practically beneficial.

[Brief description of drawings]

FIG. 1 is a partially cut side view showing an 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 the engagement / disengagement portion of the tray and the connecting rod.

FIG. 4 is a side view of only a main part of a different embodiment.

[Explanation of symbols]

 1 Grill Cabinet 2 Grill Door 3 Grill Plate 4 Linking Rod a Stroke 5 Stroke 6 Tip Rod Part of Linking Rod 7 Hooking Rod 8 Grill Door Spindle D Link Mechanism 9 Fixed Link 10 Movable Link 11 Link Link 12 Hook bar 13 Pivot of fixed link

Claims (4)

[Scope of utility model registration request] 1. A saucer in which the door (2) of the heating chamber (1) is fully closed to fully open and the door (2) is fully open to fully closed via a connecting rod (4) and a saucer (3) of an object to be cooked. It is provided so as to be interlockable only with the forward / backward stroke (a) of (3), and the forward / backward movement of the tray (3) in the forward / backward stroke (a) is converted into rotational movement of the door (2) and transmitted to the heating cabinet (1). In the door opening and closing device of the heating cabinet, in which the door (2) is opened and closed in a vertical single-opening manner as the saucer (2) is taken in and out, the saucer (3) is attached to the interlocking portion of the door (2) and the saucer (3). A spring (5) is provided which reverses the direction of force during the forward / backward stroke (a). The spring (5) facilitates opening / closing of the door (2) and advance / retreat of the tray (3), and the door (2). A door opening / closing device for a heating cabinet, characterized in that the door is opened / closed and the tray (3) is held at the storage position. 2. The first half of the forward / backward stroke (a) of the saucer (3) forcibly moves the saucer (3) and the connecting rod (4) against the spring (5), and the latter half of the spring (5). 2. The door opening / closing device for the heating cabinet according to claim 1, wherein the force of the above is reversed and the saucer (3) and the door (2) are pushed through the connecting rod (4). 3. The fixed hook portion (7) is hooked by applying a slight tensile force to the pivot (5) of the door (2), the pivotal support portion (6) of the connecting rod (4) and the fixed hook portion (7). ), The line (b) connecting the fulcrum (P) of the spring (5) and the fulcrum (K) of the door (2) by the pivotal support (8) with the connecting rod (4) associated with opening and closing of the door (2). The door opening / closing device for a heating cabinet according to claim 1 or 2, wherein the pivot opening (6) is located between the changing positions (A) and (B). 4. When the door (2) can be opened / closed by the advancing / retreating stroke (a) of the tray (3) with a substantially constant operating force via the link mechanism (D), the spring (5) is connected to the link mechanism (). D) fixed side link (9) and movable side link (10)
A slight pulling force is applied to the pivotal support portion (11) and the fixed hooking portion (12) to hook the fulcrum (P) of the spring (5) by the fixed hooking portion (12) and the fixed side by the pivotal supporting portion (13). Position the line (b) connecting the fulcrums (K) of the link (9) between the changing positions (A) and (B) of the pivotal support (11) of the link mechanism (D) as the saucer (3) moves back and forth. The door opening / closing device for a heating cabinet according to claim 1, wherein the door opening / closing device is provided.