JP3274386B2 - Commercial rice cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a commercial rice cooker for automatically weighing, washing rice, adding and subtracting water, and cooking rice under the control of a microcomputer.

[0002]

2. Description of the Related Art Conventionally, a weighed rice is put into a rice washing tank, water is supplied to the rice washing tank, and the rice is washed by stirring the rice with a stirring means. By lowering the rice valve to open the rice discharge hole, the microcomputer performs a series of operations of dropping and supplying the hydrated rice to the inner pot of the rice cooker located below the rice washing tank and cooking rice with the rice cooker. There is a commercial rice cooker that automatically performs the control.

In this type of commercial rice cooker, the rice cooker is mounted on a mounting table that can be pulled out from below the rice washing tub, and the inner cooker of the rice cooker is vertically moved up and down. Is provided between the rice cooker and the rice washing tub, and an elevating device is provided between the rice cooker and the rice washing tub to vertically move the upper lid up and down at a position where the inner pot is closed and an open position. Then, after the rice cooker finishes the rice cooker, raise the upper lid to the position to open the inner pot, pull out the rice cooker from the bottom of the rice washing tank to the side while leaving the upper lid at the lower position of the rice washing tank, and remove the rice cooker outside. Take out the inner pot from the kettle, replace it with another inner pot, place the rice cooker again below the rice washing tub, and cover the inner pot with the upper lid via the elevating device so that continuous rice cooking can be performed. I have to.

[0004]

In the prior art, when the rice cooker is taken out of the rice cooker after cooking (that is, when the cooked rice is taken out), the upper lid remains below the rice washing tank. Therefore, the rice cooker could not be pulled out from the bottom of the rice-washing tank and the inner pot could be taken out until after the "purple" after the rice was cooked. Therefore, when cooking rice continuously, "Murashi"
If the user does not wait for a while, the next rice cooking operation cannot be performed.

In order to solve such a problem, it is conceivable that the rice cooker can be pulled out together with the upper lid so that the upper lid can be removed from the lifting device so that the covered inner pot can be taken out of the outer pot. If the upper lid cannot be easily attached to the elevating device, time and labor are required, and the workability may be impaired.

[0006] Therefore, the present invention provides a business in which the lifting device and the upper lid can be detachably attached so that continuous rice cooking can be performed without waiting for the time of "Mura", and the upper lid can be easily mounted on the lifting device. An object of the present invention is to provide a rice cooker.

[0007]

The present invention employs the following technical means to achieve the above object. That is, the present invention provides a rice cooker 5 below the rice washing section 4 for washing rice.
The rice cooker 5 of the rice cooker 5 is provided with an upper lid 31 that opens and closes the inner cooker 29 by vertically moving up and down, and between the rice cooker 5 and the rice washing unit 4 is provided with an elevating device 36 that moves the upper lid 31 up and down. A rice cooker for business use wherein the rice cooker 5 can be pulled out horizontally between a position below the rice washing unit 4 and a side position thereof, wherein the elevating device 36 detachably mounts the upper lid 31. And a connecting means 51 which has a supporting portion 37 which can be moved up and down with respect to the inner pot 29, and between the supporting portion 37 and the upper lid 31, a connecting means 51 for horizontally attaching and detaching the upper lid 31 to and from the supporting portion 37, When the rice cooker 5 is set at a position below the rice washing unit 4, the support unit 37 is provided with positioning means 55 for positioning the vertical mounting position of the support unit 37 with respect to the upper cover 31 by contacting the upper cover 31. To the upper lid 31 by the positioning means 55 The upper part 31 is attached to the support part 37 via the connecting means 51 by positioning the support part 37 in the vertical direction and horizontally moving the rice cooker 5 to a position below the rice washing part 4. Features.

[0008] According to this, the "purple" process after the rice cooker 5 has finished cooking rice is performed directly below the rice washing section 4 after cooking, and the upper lid 31 and the supporting portion 37 of the elevating device 36 are separated. It is possible to select the case of detaching and taking out the inner pot covered with the upper lid 31, and in the latter case, the next rice cooking operation can be immediately performed without waiting for the "purple" time.

In addition, when the rice cooker 5 covered with the inner lid with the upper lid 31 is set below the rice washing tank 4 when the inner lid 29 is taken out together with the upper lid 31, the support portion 37 is provided. By directly contacting the positioning means 55 with the upper lid 31,
The upper lid 31 and the support portion 37 are positioned in the vertical direction, and the rice cooker 5 is pushed under the rice washing tub 4 so that the upper lid 31 is mounted on the support portion 37 via the connecting means 51.
Thereby, the support portion 37 is always positioned so as to follow the vertical height of the upper lid 31, and the upper lid 31 can be easily and reliably mounted on the support portion 37.

Further, the present invention is characterized in that there is provided a lid locking means 39 for locking the upper lid 31 at the mounting position with respect to the support section 37, whereby the upper lid is fixed to the support section 37 of the lifting device 36. Even if the attachment 31 is detachable, it is possible to prevent the upper lid 31 from accidentally detaching from the support portion 37.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 10 and FIG. 11 are schematic general configuration diagrams of a commercial rice cooker 1 for automatically performing rice metering to rice cooking under microcomputer control. This commercial rice cooker 1
The rice storage unit 3 is fixed on the upper part of the main frame 2,
A rice washing tank (rice washing section) 4 is attached and fixed to the lower surface of the rice storage section 3, and a space where a rice cooker 5 can be arranged is provided below the rice washing tank 4. ,
A mounting table 6 on which the rice cooker 5 is mounted and which can be pulled out forward is provided.

The main frame 2 has support members 8 erected on the left and right sides of the rear end of a rectangular base member 7 at a lower end in a plan view, and a lower part of the left and right support members 8 is connected to a connecting member 9.
And are connected to each other. The mounting table 6 is provided with a handle 6A at a front portion thereof, is movable in the front-rear direction via a guide rail or the like on a base member 7, and has a rice cooker 5 mounted thereon.
Can be horizontally moved in the front-rear direction from a position below the rice washing tank 4 to a position in front thereof.

The rice storage unit 3 includes a box-shaped case 10 whose front and top surfaces are freely openable and closable, and a hopper 11 for storing rice is fixed to an upper portion of the case 10.
At the lower end of 1, a weighing device 12 for weighing a desired amount of rice in the hopper 11 and discharging it downward is provided. This measuring device 12 is a hollow rotary drum type. As shown in FIG. 9, a rotary drum 14 is rotatably held around a longitudinal axis in a drum case 13 fixed to a lower end portion of a hopper 11 by bolts. Then, by rotating the rotating drum 14 with an electric motor, the cutout 14a formed on the outer periphery of the drum 14 is turned upward, a certain amount of rice is introduced into the drum 14 from the hopper 11, and the cutout 14a is further turned down. Thus, a fixed amount of rice is supplied from the drum to the rice washing tank 4 below.

The drum case 13 is made of a hard synthetic resin, and has a rice inlet 15 from the hopper 11 at the upper part, a rotating drum holding space 16 at the middle of the upper and lower parts, and a supply port 17 to the rice washing tank 4 at the lower part. Each has a vertical connection. The drum case 13 includes a pair of left and right symmetrical case constituent members 13A and 13B formed on the left and right sides of the introduction port 15, the drum holding space 16 and the supply port 17, respectively.
The case 13A and 13B are abutted against each other and fixed by bolts 13a.

As described above, the drum case 13 forms the introduction port 15, the drum holding space 16 and the supply port 17 by abutting the pair of left and right case constituent members 13A and 13B. Between space 16
There is no gap between the holding space 16 and the supply port 17, so that spilling of rice and foreign substances do not enter, the confidentiality is improved, and the manufacture and assembly of the drum case are facilitated.

The rice washing tank 4 has an upper and lower two-layer structure.
The upper end of the upper tank 4A is formed in a flat plate shape and is attached to and supported by the lower part of the case 10, and the lower part is formed in a cylindrical shape. The lower tank 4B of the rice washing tank 4 has a cylindrical upper part and a funnel-shaped lower part, and is open at the top and bottom.
The upper end of the lower layer 4B is detachably connected to the lower end of the lower layer 4 by a plurality of fixtures 18.

A rice washing means for washing rice is provided in the rice washing tank 4, and the rice washing means in the present embodiment has a stirring rod 19 for stirring rice in the tank, and the stirring rod 19 is rotated around a vertical axis. By rotating the rice in the tank, the rice in the tank is washed and polished. In addition, as the rice washing means, in addition to the above, a method of washing rice by a jet stream can be used. Further, a water supply pipe (not shown) is connected to the upper part of the rice washing tank 4 so that the washing water at the time of washing the rice and the water after the washing can be appropriately supplied into the rice washing tank 4.

At the lower end of the rice washing tank 4, a drainage jacket 20 for draining water from the lower end opening is detachably provided by a fixture 21, and the drainage jacket 20 has a tubular shape and is open at the top and bottom. The lower opening is a rice discharge port. The rice discharge port is closed by a conical rice discharge valve 22, and the rice discharge port is opened by the downward movement of the rice discharge valve 22 to open the rice washing tank 4.
Rice and water can be drained downward.

One end of a left-right drain pipe 23 is connected to the side surface of the drain jacket 20.
The other end is detachably connected to a drain box 24 located on the side of the rice-washing tank 4, and in the drain box 24, a drain valve (not shown in the drawings) for opening and closing a drain port of the drain pipe 23 is provided. )
Is provided. The upper part of the drain box 24 and the rice washing tank 4
A vertical drainage pipe 25 is connected between the drainage box 24 and an overflow port, and a rearward drainage hose 26 is connected to the rear surface of the drainage box 24 as shown in FIG.

Thus, the drainage from the overflow port of the rice washing tank 4 and the drainage jacket 20 is discharged from the drainage hose 26 at the rear through the drainage box 24. As shown in FIG. 8 and FIG.
The mounting stay 27 is attached to the left support 8 of the main frame 2.
The mounting stay 27 is formed to have a U-shaped cross section in which the left and right ends of the flat plate are bent upward, and the rear end is attached to the column 8 by bolts, and the drain box 24 is attached to the front end. Is detachably mounted and supported by bolts.

The mounting stay 27 also serves as a support member that covers and supports the drain hose 26 from below, and further protects the drain hose 26 from steam of the rice cooker 5 on the lower side, and Drain hose 26 and drain box 2
4 serves as a cover for preventing the water from dropping onto the rice cooker 5 when drainage leaks from the connection portion. The rice cooker 5 includes an inner pot 29 and an outer pot 3 to which the inner pot 29 is attached.
0 and an upper lid 31 for closing the upper end opening of the inner pot 30.
It is mounted on a mounting table 6 via the second.

As shown in FIGS. 1 and 2, the upper lid 31 has a circular shape in a plan view, and a radially central portion of an upper surface thereof has an inner pot 29.
The outer peripheral side of this horizontal plane is inclined downward in a side view, and the outer peripheral end of the top lid 31 is provided below the upper peripheral part of the inner pot 29 on the inner peripheral side. It is placed on the lid receiving portion 29a. At the center of the upper surface of the upper cover 31, a circular rice inlet 33 through which the washed rice passes is formed. The rice inlet 33 is openably and closably closed by a shutter 34 arranged on the upper surface of the upper cover 31. Then, by opening the shutter 34 and the rice discharge valve 22, the rice in the rice washing tank 4 and the water addition / drainage are adjusted by the inner pot 2 of the rice cooker 5.
9.

An elevating device 36 is provided between the rice washing tank 4 and the rice cooker 5 to open and close the inner pot by moving the upper lid 31 up and down. The elevating device 36 has a support frame (supporting portion) 37 on which the upper lid 31 is mounted and supported and supported by the main frame 2 so as to be able to move up and down, and an elevating device which raises the upper lid 31 and locks the inner pot 29 at an open position. Locking means 38;
Lid locking means 39 for locking the upper lid 31 at a position mounted on the support frame 37;
9 and a lock release means 40 for releasing the lock by the lifting lock means 38.

As shown in FIG. 1 to FIG.
Reference numeral 7 denotes a pair of left and right arm portions 42 which are formed of a plate material and are located on the left and right sides of the rice input port 33 on the upper surface of the upper cover 31 and extend in the front-rear direction. A plate-shaped connecting portion 43 for integrally connecting
It has a frame portion 44 having a substantially gate-shaped front view having left and right side walls 44a rising upward from a rear portion of the left and right arm portions 42 and an upper wall 44b connecting the upper ends of the side walls 44a.
The front surface of the frame portion 44 is closed by a front cover 50.

The front portions of the left and right arm portions 42 are bent obliquely upward, and the front ends are connected to each other by an elevating lever 45 made of a cylindrical bar. The frame part 44
A pair of upper and lower guide rollers 46 are provided on both left and right sides of the left and right sides so as to freely rotate around an axis in the left and right direction. On the other hand, as shown in FIG. 11, a pair of left and right guide rails 47 extending in the vertical direction are provided between the connecting member 9 of the main frame 2 and the lower surface of the case 10 on the left and right sides of the frame portion 44. ing. The guide rail 47 is formed in a U-shaped cross section and has concave grooves on the left and right inner sides. The guide rollers 46 are engaged with the concave grooves to guide the support frame 37 up and down.

A pair of left and right tension coil springs 49 are provided between a connecting piece 48 connecting the upper sides of the left and right guide rails 47 and the upper wall 44b of the frame portion 44, and the support frame 37 is formed by the coil springs 49. It is supported in a hanging shape. A connecting means 51 is provided between the support frame 37 and the upper lid 31 so as to removably connect the upper lid 31 to the support frame 37 in a horizontal direction.

The connecting means 51 is connected to each of the left and right arm portions 42.
A protruding portion 52 that is formed to be bent horizontally left and right from the lower end of the front and rear halfway, and a slider 5 provided on the upper surface of the upper lid 31.
And 3. The slider 53 is formed by forming an engagement groove 53 a on the outer periphery of a columnar member, and is provided on a pair of front and rear positions on the left and right sides of the rice inlet 33. The front side of the overhang portion 52 formed on the arm portion 42 is provided with a slider 53.
The engaging portion 52a is engageable with the engaging groove 53a, and the rear side of the protruding portion 52 projects left and right outward from the engaging portion 52a. A restricting piece 52b abuts on the rear portion of the slider 53 to restrict the rearward movement of the slider 53.

Therefore, the upper lid 31 is connected to the support frame 37.
When the slider 31 is moved horizontally from the front side to the rear side, the engagement piece 52a is engaged with the engagement groove 53a of the slider 53, and when the slider 31 comes into contact with the restriction piece 52b, the upper cover 3 is moved at a predetermined front and rear position.
1 is mounted on the support frame 37.
When the upper lid 31 is horizontally moved forward with respect to the support frame 37, the slider 53 slides on and off the engagement piece 52 a, and the upper lid 31 is separated from the support frame 37.

When the elevating lever 45 is moved up and down while the upper lid 31 is mounted on the support frame 37, the support frame 37 is moved up and down along the guide rail 47, and the upper lid 31 is moved up and down.
Also move up and down, and the inner hook 29 can be opened and closed by this operation. The support frame 37
Is provided with positioning means 55 for positioning the upper lid 31 in the vertical direction when the upper lid 31 is mounted on the support frame 37.

As shown in FIG. 4, the positioning means 55 is provided on a lower surface of the mounting plate 56 and a mounting plate 56 which is provided between the front portions of the left and right arm portions 42 at a position behind the lifting lever 45. And a lower surface of the positioning member 57 can be brought into contact with an upper surface of the upper lid 31,
In the contact state, the engagement groove 5 of the slider 53 on the upper lid 31 side is used.
The vertical height of 3a and the height of the engaging piece 52a on the support frame 37 side are matched.

The positioning member 57 is formed in a horizontally long block shape by a hard resin or the like, and has on its lower surface a shutter 33 provided on the upper lid 31, a support shaft 59 for supporting the shutter 34 on the upper lid 31, and a shutter. A recess 57a is formed that can pass through a pin 69 (details of the shutter 34 will be described later) standing upright on the shutter 34. In the above, when the rice cooker 5 (with the inner lid 29 covered with the upper lid 31) on the mounting table 6 is set below the rice washing tub 4, as shown in FIG. Lifting and lowering lever 45
The rice cooker 5 is moved backward via the mounting table 6 until the rear portion of the upper lid 31 is positioned below the positioning member 57, and the support frame 37 is lowered to lower the positioning member 5
7 is placed at the rear of the upper surface of the upper lid 31.

As a result, the vertical height of the engaging groove 53a of the slider 53 on the upper cover 31 and the vertical height of the engaging piece 52a of the support frame 37 match, and the vertical mounting position of the support frame 37 with respect to the upper cover 31 is set appropriately. Is done. When the rice cooker 5 is further horizontally moved rearward, the shutter 34 and the like pass through the concave portion 57a of the positioning member 57, and
Is disposed on the front side of the upper surface of the upper lid 31. At the same time, the engaging piece 52a is engaged with the engaging groove 53a of the slider 53, and the rear part of the slider 53 comes into contact with the regulating piece 52b, so that the mounting position in the front-rear direction is changed. Is set.

As described above, since the vertical positioning of the support frame 37 with respect to the upper lid 31 of the rice cooker 5 is performed via the positioning member 57 which comes into contact with the upper lid 31, the support frame 37 always follows the height of the upper lid. And the connection is made possible. Further, the connection between the upper lid 31 and the support frame 37 by the connecting means 51 can be performed by moving the rice cooker 5 back and forth via the mounting table 6, and the connecting operation is facilitated.

A pair of left and right handle plates 54 are provided on the upper surface of the slider 53. The handle plates 54 are formed as rectangular flat plates in plan view, and are provided with screws 31a for fixing the slider 53 to the upper lid 31. And are fastened together. When the rice cooker 5 is pulled out from the rice washing apparatus together with the upper lid 31 from below the rice washing apparatus by the handle plate 54, the upper lid 31 can be easily removed from the inner pot 29 by holding the handle plate 54. Further, since the handle plate 54 is provided using the screw 31a for fixing the slider 53, the number of components is reduced.

The shutter 34 for closing the rice slot 33 of the upper lid 31 is formed of a substantially rectangular flat plate material arranged along the upper surface of the upper lid 31, and a rear left end portion thereof is located at the left end side.
Is supported rotatably around a vertical axis through a support shaft 59 fixed to the shaft. As shown in FIGS. 2 and 3, the shutter 34 is opened and closed by an opening and closing device 60. The opening and closing device 60 rotates the shutter 34 back and forth to open and close the rice slot 33. Opening / closing section 61, a motor 62 as a driving means for driving the opening / closing section 61, an interlocking mechanism 63 for interlockingly connecting the motor 62 and the opening / closing section 61, and a detecting means 64 for detecting the open / closed state of the shutter 34. Mainly composed. The opening and closing unit 61,
The motor 62 and the interlocking mechanism 63 are provided near one side of the support frame 37, and the detecting means 64 is provided near the other side.

The opening / closing portion 61 includes a substrate 65 mounted on the connecting portion 43 of the support frame 37 so as to be movable back and forth.
An operation plate 67 having a rear end connected to a rear portion of the substrate 65 via a shaft portion 66 in the left-right direction is provided. The substrate 6
5 is guided by a left and right guide plate 68 provided on the connecting portion 43 of the support frame 37 to move back and forth. A torsion coil spring 68 is externally fitted to the support shaft 66, and urges the operation plate 67 to swing the distal end side downward.

The front end of the operation plate 67 is bent obliquely forward and upward, and an engagement hole 67b long in the left-right direction is formed behind the bent portion 67a. The engaging hole 67b is provided with an engaging pin 6 provided on the shutter 34 so as to protrude upward.
9 is inserted. The motor 62 is mounted on the frame upper wall 44 b of the support frame 37 and is covered by a cover 70. The interlocking mechanism 63 includes a vertically rotating shaft 71 connected to an output shaft of the motor 62, a crank arm 72 fixed to a lower end of the rotating shaft 71,
A roller 73 provided at the tip of the crank arm 72 so as to freely rotate around a vertical axis;
1 has a bracket 74 provided on the frame side wall 44a.
The roller 73 is fitted in a fitting groove 65 </ b> A at the rear end of the substrate 65 of the opening / closing section 61.

Therefore, when the motor 62 is operated, the crank arm 72 rotates horizontally via the rotating shaft 71,
The substrate 65 of the opening / closing section 61 moves back and forth via the roller 73 at the tip, whereby the operation plate 67 also moves back and forth. By the front and rear movement of the operation plate 67, the shutter 34 is rotated back and forth around the support shaft 59 via the engagement holes 67b and the engagement pins 69, and the rice slot 33 is opened and closed.

The operation plate 67 of the opening / closing portion 61 is pivoted upward about the shaft portion 66 so that the engagement hole 67b is formed.
Can be disengaged from the pin 69 of the shutter 34, and this disengagement operation is performed by an unlocking means 40 described later. When the upper lid 31 is mounted on the support frame 37, the bent portion 6 at the front end of the operation plate 67 is used.
The upper end of the pin 69 of the shutter 34 comes into contact with 7 a to push up the operation plate 67, whereby the engagement hole 67 b and the pin 69 can be engaged.

Detecting means 6 for detecting opening and closing of shutter 34
Reference numeral 4 denotes a frame upper wall 44b of the support frame 37 and a connecting portion 43
A vertical rotation shaft 75 rotatably supported by
The cam 76 is fixed by projecting the upper end of the rotating shaft 75 from the frame upper wall 44b, and a pair of front and rear detection sensors 77 that contact the cam 76 are provided on the frame upper wall 44b. The detection sensor 77 is covered by the cover 70 together with the motor 62.

A base end of an operation link 78A arranged in the left-right direction is fixed to a lower end of the rotation shaft 75, and a rear end of a relay link 78B arranged in the front-rear direction is attached to a tip of the operation link 78A. The front end of the relay link 78B is pivotally connected to a middle part of the swing link 78C, one end of which is pivotally supported by the connecting portion 43 of the support frame 37 and the other end of which is in contact with the pin 69 on the shutter 34 from behind. Is tied. The operation link 78A is urged by a spring 79 in a direction of swinging forward, whereby the relay link 78B
, The free end of the swing link 78C is pressed against the pin 69 of the shutter 34.

Therefore, the shutter 34 is opened and closed
When opened, the free end of the swing link 78C is pushed by the pin 69 on the shutter 34 and swings backward, and the operation link 78A swings backward via the relay link 78B to rotate the rotation shaft 75. Then, the cam 76 contacts one of the detection sensors 77 to detect that the shutter 34 has been opened. When the shutter 34 is closed, the operation link 78A and the swing link 78C swing forward by the urging of the spring 79, and the cam 7
6 contacts the other detection sensor 77 to detect that the shutter 34 has been closed.

As shown in FIGS. 1, 2 and 5 to 7,
The attached top cover 3 is mounted on the support frame 37 of the lifting device 36.
The cover locking means 39 is provided to lock the left and right arms 42 of the support frame 37 at a position above the overhanging portion 52 of the connecting means 51. Has a lid locking device 80 rotatably connected to the left and right outer walls around a shaft pin 81 in the left and right direction.

The lid locking member 80 is formed in an inverted letter shape when viewed from the side, the shaft pin 81 is inserted in the middle part in the front and rear direction, and the front lower end of the lid locking member 80 is bent right and left outward. , The upper lid 3 is brought into contact with the slider 53 on the front side of the upper lid 31.
1 is a restricting piece 82 for restricting the forward movement, and a rear part of the lid lock 80 is a detent piece 83 when the restricting piece 82 is rotated upward around the shaft pin 81.

When the front portion of the lid lock device 80 is pivoted upward around the shaft pin 81, the restricting piece 82 is retracted to a position above the slider 53, and the unlocked state is established in which the slider 53 is allowed to move forward. At this time, the rotation preventing piece 83 is in contact with the overhanging part 52 of the arm part 42 to prevent the regulating piece 82 from rotating more than necessary. Further, the front end of the lid lock device 80 is bent obliquely forward and upward, and when the upper lid 31 is mounted on the support frame 37, the slider 53 is moved by the lid lock device 80.
The restriction piece 82 is pushed up by contacting the bent portion 84 at the front end,
The engagement piece 52a on the support frame 37 side can be engaged with the engagement groove 53b of the slider 53.

At the rear side of the support frame 37, there is provided the elevating lock means 38 for locking the upper lid 31 at a predetermined elevating position. The elevating lock means 38 is provided in FIGS. As shown in FIG.
The guide rail 47 has a locking device 85 provided on the left and right outer surfaces of the guide rail 47 and engaged with the lifting lock device 84.

The lifting and lowering lock member 84 is formed of a plate material, and is provided between the left and right side walls 44a above the frame portion 44.
6, the upper end of the lifting lock 84 is pivotally connected, and the lower end can swing back and forth. A torsion coil spring 87 is externally fitted to the pivot 86 and is engaged with the tongue piece 84b bent left and right inward from the elevating lock device 84 and the frame portion 44, so that the lock device 84 swings rearward. It is energizing. The upper and lower portions of the lock member 84 are bent right and left outward and project from the side wall 44a through a window 44c formed in the frame plate side wall 44a. 84a.

The hook 85 has a hook 85a projecting forward from the guide rail 47, and a regulating hook 85b projecting above the hook 85a and forward from the hook 85a. The lower side of the hooking claw 85a is inclined forward and the upper side is horizontal. The lower side of the restriction piece 85b is horizontal, and the upper side is inclined rearward. When the inner pot 29 of the rice cooker 5 is closed by the upper lid 31 attached to the support frame 37 (the state shown in FIG. 1), the lock piece 84a of the lifting lock device 84 is disposed below the hooking claw 85a. Have been.
Then, when the support frame 37 is raised via the elevating lever 45, the lock piece 84a comes into contact with the lower side of the hooking claw 85a and swings forward along the slope, and when passing through the lower side, the spring 87 moves.
The lock piece 84a engages with the upper side of the hook claw 85a by the urging, and the upper lid 31 opens the inner hook 29 at a predetermined raised position to be locked. At this time, the locking piece 84 is
a is prevented from rising above a predetermined value, and the upper lid 31 and the like are prevented from colliding with the lower end of the rice washing tank 4.

As described above, when the upper cover 31 is raised and is in the lock position, the upper cover 31 is disengaged upward from the inner pot 29 so that the inner pot 29 of the rice cooker 5 can be pulled forward.
As shown in FIGS. 1 to 3 and FIGS. 5 to 7, both the release of the lock by the elevating lock means 38 and the release of the lock by the lid lock means 39 are provided on the support frame 37.
There is provided a lock release means 40 which can be performed by one operation lever.

The lock release means 40 has a pair of left and right operation arms 88 extending back and forth along the left and right inner sides of the arm portion 42 of the support frame 37. The front portion of the left and right operation arm 88 is bent obliquely upward, and its front end is connected to each other by an operation lever 89 made of a cylindrical bar. The rear portion of the left and right operation arm 88 is connected by a connection member 90. Interconnected. As shown in FIG. 3, the connecting member 90 has a board 65 and an operation plate 67 in the opening / closing section 61 of the shutter 34 on one of the left and right sides.
The other side is bent at the middle part in the left-right direction so as to be disposed above each arm 78 of the detection means 64.

The operation lever 89 is connected to the lifting lever 4.
5, it is arranged in parallel with the elevation lever at substantially the same height as the elevation lever, and is provided so as to be gripped with one hand together with the elevation lever 45. The rear end of the operation arm 88 is provided with a pin 91 at the lower end of the lock member 84 of the lifting lock means 38.
As shown in FIG. 7B, when the operation lever 89 is gripped together with the elevating lever 45 and the operation lever 89 is pulled forward (in the direction of the arrow a), as shown in FIG. The elevating lock device 84 swings forward (in the direction of arrow b) around the pivot 86, and the lock piece 8 of the lock device 84 is locked.
The hook 4a is detached from the hook 85a of the hook 85. As a result, the lifting lock of the support frame 37 and the upper lid 31 by the lifting / lowering locking means 38 is released, and the lowering can be performed.

At this time, since the lifting lever 45 can be grasped together with the operation lever 89, the support frame 37 which is free in the vertical direction can be supported with one hand via the lifting lever 45, and the lifting frame 37 and the upper lid 31 are suddenly moved. Prevents descending. As shown in FIG. 1, FIG. 2, FIG. 5, and FIG.
At the upper end of the support frame 37, a contact piece 92 is provided which bends left and right inward. The contact piece 92 extends above the operation arm 88 beyond the arm portion 42 of the support frame 37.

Then, as shown in FIG. 7A, when the operation arm 88 is lifted upward (in the direction of arrow c) via the operation lever 89, the operation arm 88 swings upward with the pin 91 as a fulcrum. The stopper piece 82 contacts the contact piece 92 of the lid lock device 80 and pushes the regulating piece 82 upward (in the direction indicated by the arrow d) around the shaft pin 81, and pushes the regulating piece 82 to the slider 5 of the upper lid 31.
3 from above.

By operating the operation lever 89, the opening / closing section 61 is connected via the connecting member 90 of the operation arm 88.
The operation plate 67 swings upward around the support shaft 66 and the shutter 3
The engagement hole 67b is detached from the engagement pin 69 on the upper part 4. Thereby, the front horizontal movement of the upper lid 31 with respect to the support frame 37 is allowed, and in this state, the rice cooker 5 can be pulled forward to take out the inner pot 29 together with the upper lid 31. When the upper lid 31 is detached forward from the support frame 37, the support frame 37 is allowed to move downward. However, when the lift lever 45 is gripped together with the operation lever 89, the support frame 37 is moved.
Can be supported with one hand so as not to fall sharply.

The lock releasing means 40 is provided with an operation restricting means 94 for restricting the operation of one of the lid lock release and the elevation lock release by the operation lever 89 so that the other is not operated. The operation restricting means 94 includes a contact piece 95 protruding upward from the front and rear halfway of the operation arm 88 and an upper end protruding from the front and rear halfway of the arm 42 of the support frame 37 and having upper ends in the left and right directions. And a restricting piece 96 which is bent toward the upper side and covers the contact piece 95 from above.

The contact piece 95 has a rear side 95b projecting above the front side 95a and is formed slightly lower than the lower surface of the regulating piece 96. The rear side 95b of the contact piece 95 is located rearward of the restriction piece 96, and enters below the restriction piece 96 when the operation arm 88 is pulled forward by the operation lever 89.

When the operating arm 88 is swung upward, the front portion 95a of the contact piece 95 contacts the lower surface of the regulating piece 96, and the rear portion 95b engages with the rear end of the regulating piece 96. Has become. Therefore, when the operating lever 89 is pulled forward to release the lifting lock, the rear side 95b of the contact piece 95 enters below the regulating piece 96, and the rear side 95b of the contact piece 95 becomes an obstacle. The operation arm 88 cannot swing upward.

When the operating lever 89 is lifted upward to release the lid lock, the rear side 95b of the contact piece 95 engages with the rear end of the restricting piece 96 to operate the operating arm 8
8 prevents it from being pulled forward. In this way, when one operation is performed, the other operation is regulated,
An erroneous operation caused by performing two operations with one operation lever 89 is prevented.

In the commercial rice cooker described above, after the rice cooking by the rice cooker 5 is completed, the unlocking means 40 is used.
Of the cover locking means 3 by swinging the operation arm 88 upward.
9 can be released, the placing table 6 can be pulled forward, and the rice cooker 5 can be pulled out while the inner pot 29 is closed with the upper lid 31.
Thereby, the covered inner pot 29 is taken out from the rice cooker 5 to perform “Murashi”, and another covered inner pot 29 is inserted into the rice cooker 5 and set again below the rice washing tank 4. In addition, continuous cooking is possible without waiting for the "Murashi" time of the previous cooking.

Further, the rice cooker 5 with the upper lid 31 is placed in the rice washing tank 4
When setting to the lower position, the positioning member 57 provided on the elevating lever 45 is placed on the upper lid 31 to set the vertical position of the upper lid 31 and the support frame 37, and the mounting table 6 is pushed in as it is. Thus, the connection between the upper lid 31 and the support frame 37 can be easily performed. Then, after the rice cooking is completed, if “moraying” is directly performed at a position below the rice washing tank 4, the supporting frame 37 is moved through the lifting lever 45.
Is raised and locked by the elevating lock means 38, whereby the upper lid 31 opens the inner pot 29, the rice cooker 5 is pulled out via the mounting table 6, and the inner pot 29 may be replaced with another inner pot 29.

Further, the rice cooker 5 in which the inner pot 29 has been replaced is horizontally moved rearward, and is disposed below the rice washing tank 4.
Is pulled together with the lift lever 45 to pull the upper lid 31
Is lifted and the upper lid 31 is lowered via the raising / lowering lever 45 to cover the inner pot 29. The present invention can be appropriately changed in design without being limited to the above-described embodiment. For example, in the above-described embodiment, the rice cooker 5 is horizontally moved in the front-rear direction via the mounting table 6. The rice cooker 5 may be horizontally movable in the left-right direction, and the upper lid 31 may be attached to and detached from the support frame 37 of the elevating device 36 in the left-right direction.

The arrangement of the commercial rice cooker is such that the rice storage 3 is arranged below the rice cooker 5 and the rice is supplied to the rice washing tank 4 using a blower, a conveyor or the like. There may be.

[0063]

According to the present invention, the upper lid can be freely attached to and detached from the supporting portion of the lifting device, and the inner pot can be taken out of the rice cooker with the upper lid covered. Can be performed with the inner pot removed, and the next rice cooking operation can be performed without waiting for this "murashi" time, thereby shortening the operation time. When the rice cooker with the inner pot covered with the upper lid is set at a position below the rice washing section, the positioning means can accurately position the upper lid and the support section in the vertical direction, and the upper lid can be securely and securely attached to the support section. It can be easily mounted.

[Brief description of the drawings]

FIG. 1 is a side view of a lifting device of a commercial rice cooker according to an embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrows BB in FIG. 1;

FIG. 3 is a diagram showing an arrow AA in FIG. 2;

FIG. 4 is a front view showing a connecting means and a positioning means between the upper lid and the elevating device.

FIG. 5 is a front view showing a lid locking unit.

FIG. 6 is a side view showing the connecting operation of the upper lid and the elevating device.

FIG. 7 shows an unlocking operation by an operation lever;
(A) is a side view showing the state of lid unlocking, (b)
FIG. 5 is a side view showing a state of lifting lock release.

FIG. 8 is a perspective view showing a drain box and a mounting portion.

FIG. 9 is a front view showing the weighing machine.

FIG. 10 is an overall front view of the commercial rice cooker.

FIG. 11 is an overall side view of the commercial rice cooker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Commercial rice cooker 4 Rice washing tank 5 Rice cooker 29 Inner pot 31 Upper lid 36 Elevating device 37 Supporting part 39 Lid lock means 51 Connecting means 55 Positioning means

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinji Harada 2-2-227 Mizuhashi, Higashiosaka-shi, Osaka Daiwa Seiko Co., Ltd. (72) Kiyoto Kasamatsu 2-chome Mizuhashi, Higashiosaka-shi, Osaka JP-A-7-313359 (JP, A) JP-A 8-243022 (JP, A) JP-A 9-131260 (JP, A) Hei 3-75010 (JP, A) JP-A-10-117927 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47J 27/14-27/18 A47J 27/00

Claims (2)

(57) [Claims] A rice cooker (5) is provided below a rice washing section (4) for washing rice, and an upper lid for opening and closing the inner kettle (29) by vertically moving the inner kettle (29) of the rice cooker (5). (31), and an upper lid (3) is provided between the rice cooker (5) and the rice washing section (4).
1) A commercial rice cooker provided with a lifting device (36) for raising and lowering the rice cooker (5) so that the rice cooker (5) can be pulled out horizontally between a position below the rice washing section (4) and a side position thereof. The elevating device (36) has a support part (37) to which the upper lid (31) is detachably mounted and which can be raised and lowered with respect to the inner pot (29). A connecting means (51) for horizontally attaching / detaching the upper lid (31) to / from the support part (37) between the support part (31) and the upper part (31);
7), the upper lid (31) is brought into contact with the upper lid (31).
Positioning means (55) for positioning the support portion (37) in the vertical direction with respect to the rice cooker (5) when the rice cooker (5) is set below the rice washing section (4). The supporter (37) is positioned vertically with respect to (31), and the rice cooker (5) is horizontally moved to a position below the rice washing unit (4), so that the top cover (51) is connected via the connecting means (51). 31. A commercial rice cooker, wherein 31) is mounted on a support portion (37). 2. An upper cover (3) with respect to the support portion (37).
2. The rice cooker for business use according to claim 1, further comprising a lid locking means (39) for locking (1) at the mounting position.