JP2019032117A - Gas cooking equipment - Google Patents

Abstract

To facilitate assembly or confirmation on an assembly state, and further simplify a shape of a cam, even in gas cooking equipment including a grill part with upper and lower burners and configured to adjust fire power of the upper and lower burners on the basis of ON/OFF of a pair of micro switches.SOLUTION: In a mechanical box 33 where a cam mechanism part 31 is stored, a stationary plate 91 is fixed in a horizontal direction, and on a front face of the stationary plate 91, first and second micro switches 92, 93 are aligned and fixed in a circumferential direction where an ignition/extinction button 15 is rotationally operated. An operational cam 94 moves in the circumferential direction below each lever 92a, 93a of the first and second micro switches 92, 93 in association with rotation of the ignition/extinction button 15, so that each lever 92a, 93a oscillates vertically.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a gas cooker such as a stove.

  In a gas cooker such as a stove, a push switch that includes a gas burner as a heating means for an object to be cooked, and that enables the gas burner to be extinguished by a push operation of a fire extinguishing button (operation member) provided on the front surface of the container. A device provided with a mechanism is known. Moreover, in this push switch mechanism, the heating power of the gas burner can be adjusted by rotating the point-extinguishing button at the combustion position (for example, Patent Document 1). In this patent document 1, a gas stove having a grille having an upper burner and a lower burner is disclosed, and a pair of thermal power adjustment switches (microswitches) are provided on the upper casing of the push switch mechanism on the grille side. Switch operation cams that rotate together with the grill operating tool (point extinguisher button) are arranged side by side, and two switch operation cams turn on / off a pair of micro switches as the point extinguishing button rotates. By turning it off, the control unit can open and close the grill side solenoid valve to adjust the heating power of the upper and lower burners in four stages.

JP 2017-3164 A

  In the adjustment of the heating power of the grill of Patent Document 1, since the microswitches are arranged side by side before and after the upper casing, the assembly is troublesome and it is difficult to check (view) the assembled state. Further, in order to turn the front and rear microswitches ON / OFF, the switch operation cams also need to be provided with different shapes in the front and rear, which complicates the shape of the cams.

  Therefore, the present invention includes a grill part having upper and lower burners, and even if the heating power of the upper and lower burners is adjusted based on the ON / OFF operation of a pair of microswitches, the assembly and the assembled state can be easily checked. The purpose of the present invention is to provide a gas cooker that can be configured with a simple cam.

In order to achieve the above object, according to the first aspect of the present invention, an operation member on the front side and a gas flow path to the upper burner and the lower burner are provided in a vessel body having a grill portion having an upper burner and a lower burner. It has a rear flow path opening / closing part with a valve shaft that opens and closes, and a cam that can move back and forth between the operating member and the flow path opening / closing part, and the front / rear position of the cam is changed by repeatedly pushing the operation member. A cam mechanism that moves the valve shaft back and forth between a fire extinguishing position that closes the gas flow path and a combustion position that opens the gas flow path, and the thermal power of the upper and lower burners at the combustion position by rotating the operating member. A thermal power adjustment unit that adjusts the thermal power adjustment unit, the thermal power adjustment unit is provided below each of the two micro switches arranged with the levers facing downward, and the two micro switches, and in conjunction with the rotation of the operation member Center of rotation of operation member Gas to the upper and lower burners according to the combination of the operation cam that moves in the circumferential direction around the center and swings each lever up and down, and the ON / OFF operation of the two micro switches by swinging each lever A gas cooking utensil comprising gas amount changing means for changing the amount,
A fixed plate is fixed in the left-right direction in the case in which the cam mechanism unit is accommodated, and two micro switches are fixed in the left-right direction on the front surface of the fixed plate, and the operation cam is interlocked with the rotation of the operation member. Each lever is rocked up and down by moving in the circumferential direction below each lever of the two microswitches.
According to a second aspect of the present invention, in the configuration of the first aspect, a V-shaped action portion is formed at the tip of each lever, and an action on the action cam is provided at both ends in the circumferential direction of the action cam. An inclined portion that guides the entry and exit of the portion is formed, and the rising angle of the inclined portion from the tangential direction with respect to the circumferential direction is smaller than the rising angle of the action portion from the tangential direction.
According to a third aspect of the present invention, in the configuration of the first or second aspect, a cut is formed in the side edge of the fixing plate, and the wiring extending from the two microswitches is locked to the cut and routed backward. And are bound to each other behind the fixed plate.

According to the first aspect of the present invention, even if the grill portion having the upper and lower burners is provided and the heating power of the upper and lower burners is adjusted based on the ON / OFF operation of the two microswitches, Confirmation can be performed easily. Even when the two micro switches are turned ON / OFF, the operation cam has a simple shape.
According to the second aspect of the present invention, in addition to the effect of the first aspect, the rising angle of the inclined portion of the operation cam is made smaller than the rising angle of the action portion of the lever. It is possible to prevent the operating cam from hitting the lever strongly, and the operating feeling of the operating member when adjusting the thermal power is not impaired.
According to the third aspect of the present invention, in addition to the effect of the first or second aspect, the wiring extending from the two microswitches is locked to the notch provided on the side edge of the fixed plate, and is routed backward to fix the fixed plate. By binding them to each other at the rear, a plurality of wirings of the two microswitches can be combined, and workability during assembly and maintenance is improved.

It is a perspective view of a built-in stove. It is a block diagram of a grill part. It is a perspective view of a push switch mechanism. It is a disassembled perspective view of a push switch mechanism. It is a disassembled perspective view of a cam mechanism part. (A) is a front view of a front cam, (B) is a front view of a rear cam. It is a table | surface which shows the relationship between the rotation angle of a point fire extinguishing button, the ON / OFF state of each micro switch, and the heating power of an upper and lower burner. It is explanatory drawing of the thermal power adjustment part in case the rotation angle of a point fire extinguishing button is 0 degree, (A) shows a side surface, (B) shows the AA line cross section, (B) shows an expansion perspective view, respectively. It is explanatory drawing of the thermal-power adjustment part in case the rotation angle of a point-extinguishing button is 45 degrees, (A) shows a side surface, (B) shows a BB line cross section, (B) shows an enlarged perspective view, respectively. It is explanatory drawing of the thermal-power adjustment part in case the rotation angle of a point-extinguishing button is 75 degrees, (A) shows a side surface, (B) shows a CC line cross section, (B) shows an enlarged perspective view, respectively. It is explanatory drawing of the thermal-power adjustment part in case the rotation angle of a point-extinguishing button is 90 degrees, (A) shows a side surface, (B) shows a DD line cross section, (B) shows an expansion perspective view, respectively. It is explanatory drawing of the push switch mechanism of a fire extinguishing position, (A) shows a side surface, (B) shows a bottom face, respectively. It is explanatory drawing of the push switch mechanism of an ignition cutoff position, (A) shows a side surface, (B) shows a bottom face, respectively. It is explanatory drawing of the push switch mechanism of a combustion position, (A) shows a side surface, (B) shows a bottom face, respectively. It is explanatory drawing of the push switch mechanism of a fire extinguishing push-off position, (A) shows a side surface, (B) shows a bottom face, respectively.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a built-in stove that is an example of a gas cooker. This built-in stove 1 has three stove parts 3, 3,... In a horizontally long rectangular body 2 in plan view, two on the left and right on the front side (lower left side in FIG. 1), and one on the rear side in between. The grill part 4 is provided between the two stove parts 3 and 3 on the front side.
The body 2 is attached to a main body 5 having an open front surface and an upper surface, a front frame 6 attached to the front surface of the main body 5, a front panel 7 attached to the lower side of the front frame 6, and an opening on the upper surface of the main body 5. It consists of a top plate 8. In the opening on the upper surface of the container body 2, a flange 9 is provided around the top plate 8 so as to be engaged with the kitchen cabinet. Each stove unit 3 includes a stove burner 10 that is exposed upward from the top plate 8 and has a burner head 11 placed on the upper surface thereof, and five virtues 12 positioned around the burner head 11. Reference numeral 13 denotes an exhaust cap of the grill portion 4.

A grill door 14 is provided at the center of the front panel 7, and on the left and right thereof, a fire extinguishing button 15, 15... Serving as an operating member for operating the stove burner 10 and a grill burner described later, and timer cooking An openable operation panel 16 is provided for setting the above. The point-extinguishing button 15 is provided at the front end of the push switch mechanism housed in the body 2, and the point-extinguishing operation of each burner is possible by repeating the pressing operation of the point-extinguishing button 15.
FIG. 2 shows a configuration diagram of the grill portion 4. In the grill section 4, an upper burner 17 and a lower burner 18 are provided as grill burners, a magnet electromagnetic valve 19 and a main valve 20 are provided in a flow path from the gas inlet, and the upper burner 17 is disposed downstream thereof. It branches into an upper flow path 21 to the side and a lower flow path 22 to the lower burner 18 side. The upper flow path 21 is provided with an upper bypass flow path 23 having an upper switching electromagnetic valve 24, and the lower flow path 22 is provided with a lower bypass flow path 25 having a lower switching electromagnetic valve 26. A closing electromagnetic valve 27 is provided in the upper flow path 21 downstream of the upper bypass flow path 23.

The magnet solenoid valve 19 and the main valve 20 are incorporated in a push switch mechanism 30. The magnet solenoid valve 19 is opened by a push operation of the point-extinguishing button 15, and energization control from a controller (not shown) composed of a circuit board is performed. Is held open. The main valve 20 opens and closes by a push-push operation of the fire extinguishing button 15. The upper switching solenoid valve 24, the lower switching solenoid valve 26, and the closing solenoid valve 27 are opened and closed by energization control from the controller, respectively.
The structure of the stove part 3 is a grill except that a non-branching flow path to the stove burner 10 is provided with a heating power adjusting needle that adjusts the gas amount by rotating the fire extinguishing button 15 instead of the closing solenoid valve 27. Same as part 4.
Hereinafter, the push switch mechanism 30 in the grill part 4 will be described in detail.

[Description of push switch mechanism]
3 is a perspective view of the push switch mechanism 30, FIG. 4 is an exploded perspective view, and FIG. 5 is an exploded perspective view of the cam mechanism portion. The push switch mechanism 30 includes a cam mechanism portion 31 and a flow path opening / closing portion 32 attached to the rear of the cam mechanism portion 31. A gas pipe (not shown) in the container 2 is connected to the upstream side of the flow path opening / closing part 32, and a gas pipe (not shown) reaching the upper flow path 21 and the lower flow path 22 is connected to the downstream side. The point fire button 15 is provided at the front end of the cam mechanism 31. The push switch mechanism 30 is installed in the front-rear direction with the cam mechanism portion 31 facing downward as shown in FIGS. 3 and 4 in the container body 2, but in FIG. For convenience, it is shown upside down.

  First, the cam mechanism unit 31 includes a mechanical box 33 that is a case, and a front cam 34 and a rear cam 35 housed in the mechanical box 33. The mechanical box 33 is composed of a box main body 36 having a U-shaped cross section and an open lower surface and a front surface, and a cover 37 that closes the lower surface of the box main body 36. 38 and an igniter switch 39 are screwed in such a posture that the levers 38a and 39a are respectively positioned downward and rearward. A partition plate 40 having a through hole is formed at the center of the box body 36 in the front-rear direction, and a pair of cutout windows 41 and 41 are formed on the left and right sides of the box body 36. Stop protrusions 42, 42,... Protrude in the front-rear direction at a predetermined interval. The rear end of the box body 36 is closed by a closing plate 43 projecting left and right, and a through hole 44 is formed in a portion facing the inside of the box body 36, and a ring-shaped protrusion 45 is formed around the hole 44. Yes. A rear pin receiving portion 46 projects from the lower rear side of the closing plate 43, and the rear end of the inverted lever-shaped rear lever pin 47 is held by the holding spring 48 in the rear pin receiving portion 46. . Therefore, the rear lever pin 47 can swing left and right around the rear end. On the inner side of the front end of the box body 36, stoppers 49, 49 are provided on the left and right sides, and the same arcuate ridges 50, 50 are provided on the front end arcuate upper surface 36a at a predetermined interval in the front-rear direction. .

  The cover 37 has a U-shaped cross section that covers from the lower surface of the box body 36 to the lower portions of the left and right side surfaces, and the left and right folded portions have square holes 51, 51,. Is formed, and a front pin receiving portion 52 projects from the center of the front end. In the front pin receiving portion 52, the front end of the inverted U-shaped front lever pin 53 is held by a holding spring 54. Therefore, the front lever pin 53 can swing left and right around the front end. Further, the front end of the rear lever pin 47 is inserted into the lower surface of the cover 37, and the arc-shaped rear elongated hole 55 centered on the rear end and the rear end of the front lever pin 53 are inserted, and the arc shape centered on the front end. The front long hole 56 is formed in the left-right direction.

The front cam 34 is a block body having a U-shaped cross section whose upper outer shape is fitted to the box body 36, and a connecting rod 60 to which the fire extinguishing button 15 is connected is connected to the front surface, and a rear surface is connected to the rear surface. A front rod 61 that presses the rear cam 35 protrudes rearward. The left and right side surfaces of the front side of the front cam 34 are formed to have a width of two sides, and locking surfaces 62 and 62 that are locked to the stoppers 49 and 49 of the box body 36 from the rear are formed on the left and right sides of the rear part.
In addition, a plate-like cam plate portion 63 having a front cam groove 64 formed rearward is formed in the lower portion of the front cam 34, and a concave portion 65 whose bottom surface and front surface are open is formed on the front side of the cam plate portion 63. Has been. As shown in FIG. 12, the front cam groove 64 has a front circulation part 66 having a heart shape in plan view in which the left side is longer forward than the right side with the tip facing rearward, and the rear from the tip of the front circulation part 66. It is a bottomed groove comprising a front straight part 67 extending to the bottom. The rear end of the front lever pin 53 penetrating the front long hole 56 is inserted into and locked in the front cam groove 64 and moves in the front cam groove 64 as the front cam 34 moves forward and backward as will be described later. ing.
Further, on the outer peripheral surface of the front cam 34, as shown in FIG. 6A, a plurality of guide protrusions 68, 68 are formed on the U-shaped upper surface and the left and right side surfaces and the lower surface along the cam plate portion 63.・ ・ Is protruding in the front-rear direction.

  The rear cam 35 is also a U-shaped block body whose upper outer shape is fitted to the box main body 36, and a rear rod 70 that presses a valve shaft 82, which will be described later, of the flow path opening / closing portion 32 faces rearward. Projected. A left arm 71 and a right arm 72 project from the left and right side surfaces, respectively. The left arm 71 pushes the lever 38a of the board switch 38 as the rear cam 35 moves backward, and the right arm 72 pushes the lever 39a of the igniter switch 39 as the rear cam 35 moves backward. 71 is formed longer rearward than the right arm 72, and the timing for turning on the substrate switch 38 is set earlier than the timing for turning on the igniter switch 39.

Further, a clearance recess 73 into which the cam plate portion 63 of the front cam 34 can enter is formed in the front-rear direction below the rear cam 35, and a rear cam groove 74 is formed on the bottom surface of the clearance recess 73. . As shown in FIG. 12, the rear cam groove 74 has a heart-shaped rear circulation portion 75 whose tip is directed rearward and the right side is longer forward than the left side, and from the tip of the rear circulation portion 75 to the rear. It is a bottomed groove comprising a rear straight portion 76 that extends. The front end of the rear lever pin 47 that passes through the rear elongated hole 55 is inserted and locked into the rear cam groove 74, and moves in the rear cam groove 74 as the rear cam 35 moves forward and backward, as will be described later. Yes.
Further, on the outer peripheral surface of the rear cam 35, as shown in FIG. 6B, a plurality of guide projections 77, 77... Are formed on the U-shaped upper surface and the left and right side surfaces excluding the left and right arms 71, 72. Is projected in the front-rear direction.

Here, the front cam 34 is accommodated in the box body 36 on the front side of the partition plate 40, and a front coil spring 78 into which the front rod 61 of the front cam 34 is inserted is provided between the front cam 34 and the partition plate 40. . Therefore, the front cam 34 is moved back and forth between a front position where the locking surfaces 62, 62 abut against the stoppers 49, 49 of the box body 36 and a rear position where the rear surface except the cam plate portion 63 abuts the partition plate 40. It becomes possible to move.
The rear cam 35 is accommodated in the box body 36 on the rear side of the partition plate 40, and a rear rod 70 of the rear cam 35 is inserted between the rear cam 35 and the closing plate 43 of the box body 36. A rear coil spring 79 is provided. The rear coil spring 79 is held with the rear end fitted to the ring-shaped protrusion 45 on the front surface of the closing plate 43. Therefore, the rear cam 35 can move back and forth between a front position where the front surface abuts on the partition plate 40 and a rear position where the rear rod 70 pushes the valve shaft 82 and the rear surface is close to the ring-shaped protrusion 45. .

  In this state, the cover 37 is put on the box body 36 to close the lower surface, the rear end of the front lever pin 53 is locked to the front cam groove 64 of the front cam 34 through the front long hole 56, and the front end of the rear lever pin 47 is The rear cam 35 is engaged with the rear cam groove 74 through the rear long hole 55. The front cam 34 and the rear cam 35 are respectively urged forward by a front coil spring 78 and a rear coil spring 79. As will be described later, the locking position of the front lever pin 53 to the front cam groove 64 and the rear lever pin The front-rear position in the mechanical box 33 is changed according to the locking position of the rear cam groove 74 by 47. The left and right arms 71, 72 of the rear cam 35 protrude outwardly from the left and right through the cutout windows 41, 41 of the box body 36, respectively, and the substrate switch 38 and the igniter switch 39 are turned on / off as the rear cam 35 moves forward / backward. It will be turned off.

  The flow path opening / closing section 32 is a cylindrical body having a gas inlet 80 on the lower side and a gas outlet 81 on the upper side, and a gas flow path is formed inside, and the upstream side of the gas flow path is formed at the rear end. A magnet electromagnetic valve 19 that opens and closes is provided, and a valve shaft 82 including a main valve 20 that opens and closes the downstream side of the gas flow path is housed in the gas flow path so as to be movable back and forth. However, the valve shaft 82 is normally biased to a forward position where the main valve 20 is closed by the magnet electromagnetic valve 19 biased forward. A mounting flange 83 from which the valve shaft 82 projects is extended at the front end of the flow path opening / closing portion 32, and the mounting flange 83 is screwed to the closing plate 43 of the box body 36, so that the through hole 44 of the closing plate 43. And the opening 84 of the mounting flange 83 communicate coaxially so that the valve shaft 82 can protrude into the box body 36.

  The point-extinguishing button 15 includes a button portion 85 having a circular shape when viewed from the front, and a circular cap 86 assembled to the button portion 85 from the front, and a locking portion 87 protruding from the center of the rear surface of the cap 86. It penetrates from the center of the button portion 85 and is locked to the front end of the intermediate cylinder 88 that is rotatably mounted on the connecting rod 60 of the front cam 34. Thereby, the point fire extinguishing button 15 is rotatably connected to the connecting rod 60 together with the intermediate cylinder 88.

[Explanation of thermal power adjustment unit]
And between the mechanical box 33 and the point fire extinguishing button 15, the thermal power adjustment part 90 which adjusts the thermal power of the upper and lower burners 17 and 18 is provided. This thermal power adjustment unit 90 turns on / off a fixed plate 91 provided in the mechanical box 33, two first and second micro switches 92 and 93 provided on the fixed plate 91, and both micro switches 92 and 93. An operating cam 94 to be operated, an interlocking body 95 that is provided between the intermediate cylinder 88 and the operating cam 94 and rotates the operating cam 94 in conjunction with the rotation operation of the fire extinguishing button 15; And a detent member 96 that regulates the rotation angle.

First, the fixing plate 91 is fixed in the left-right direction on the upper surface of the box body 36 at the front side position with respect to the substrate switch 38 and the igniter switch 39, and cuts 97, 97 are formed on the left and right side edges. The first and second microswitches 92 and 93 are formed by a positioning plate 98 and a positioning pin 99 provided on the front surface of the fixed plate 91 so that the levers 92a and 93a face downward and the tips of the levers 92a and 93a are formed. The character-shaped action portions 92b and 93b are fixed side by side so that the first micro switch 92 on the left side is slightly lowered to the left in a direction adjacent to each other. Support pins 100 and 100 that receive the levers 92a and 93a when the levers 92a and 93a are in an OFF position (downward swing position) are provided on the front surface of the fixing plate 91 below the positioning pins 99. .
Further, as shown in FIG. 3, the lead wires 101 and 101 of the first and second microswitches 92 and 93 are respectively engaged with the adjacent outer cuts 97 and 97 and then drawn backward to fix the fixed plate. They are bound to each other behind 91 and connected to the controller.

The operation cam 94 is provided on the arc-shaped upper surface 36 a of the box body 36 below the first and second micro switches 92 and 93. As shown in FIG. 8, the operation cam 94 has an arc-shaped bottom surface along the upper surface 36a, and a rear protrusion 50 projecting from the upper surface 36a is fitted into a concave groove 102 provided on the bottom surface. By doing so, it is possible to slide in the circumferential direction along the upper surface 36a. Further, the operation cam 94 has a thick portion 103 at the center in the circumferential direction, and inclined portions 104 and 104 that gradually become thinner toward the outer side in the circumferential direction at the left and right ends connected in the circumferential direction.
The interlocking body 95 includes a cam side interlocking part 105 on the operation cam 94 side and an operation side interlocking part 106 on the point of the fire extinguishing button 15 side. First, the cam-side interlocking portion 105 is integrally formed with the operation cam 94 and extends forward, and the cross-sectional shape is folded inward from the arcuate upper plate along the upper surface 36a of the box body 36 and its left and right ends. It has a semi-cylindrical shape having a bent side plate. On the bottom surfaces of the both side plates, fitting concave portions 107 and 107 into which the front protrusions 50 of the upper surface 36a are fitted are formed. Therefore, the cam side interlocking part 105 is mounted on the upper surface 36a together with the operation cam 94 in a state in which it can slide in the circumferential direction along the upper surface 36a.

  On the other hand, the operation side interlocking portion 106 is integrally formed with the flange 108 provided around the intermediate cylinder 88 and extends rearward, and the cross-sectional shape is along the upper surface 36a of the box body 36 like the cam side interlocking portion. It has a semi-cylindrical shape having an arcuate upper plate and side plates bent inward from the left and right ends thereof. However, the operation side interlocking portion 106 is formed to be slightly larger than the cam side interlocking portion 105, and the cam side interlocking portion 105 is loosely inserted into the operation side interlocking portion 106 as shown in FIGS. Yes. Accordingly, the interlocking body 95 extends in the front-rear direction following the front-rear position of the point-extinguishing button 15 and moves the operation cam 94 in the circumferential direction along the upper surface 36 a of the box body 36 in conjunction with the rotation of the point-extinguishing button 15. It will slide to.

[Description of anti-rotation member]
The anti-rotation member 96 is a two-stage cylindrical body having a small-diameter portion 110 through which the connecting rod 60 penetrates and a large-diameter portion 111 connected to the front side of the small-diameter portion 110. Further, the ribs 60a, 60a,... Provided radially to the connecting rod 60 are engaged with each other so that the connecting rod 60 is assembled in a state where the rotation is restricted. On the outer periphery of the large-diameter portion 111, a left-side restricting piece 112 and a right-side restricting piece 113 project in a symmetrical manner, and the upper surfaces of both the restricting pieces 112, 113 pass through the center of rotation of the point-extinguishing button 15 180. Located on a horizontal plane. The intermediate cylinder 88 is inserted through the connecting rod 60 in a state in which the intermediate cylinder 88 is in contact with the bottom surface of the large diameter portion 111 via the thrust washer 114.

[Explanation of thermal power adjustment]
In the heating power adjustment unit 90 formed in this way, the first and second micro switches 92 and 93 are slid by moving the operation cam 94 via the interlocking body 95 in accordance with the rotation operation of the point-extinguishing button 15 at the combustion position described later. Can be turned ON / OFF. The controller that has obtained this combination of ON / OFF signals can adjust the heating power of the upper and lower burners 17 and 18 by opening and closing the upper and lower switching solenoid valves 24 and 26. FIG. 7 shows the rotation angle of the fire extinguishing button 15 (the rotation limit angle 0 ° to 90 ° divided into four ranges) and the ON / OFF of the first and second micro switches 92 and 93 for each range. The relationship between the OFF state and the heating power of the upper and lower burners 17 and 18 is shown. Hereinafter, although heating power adjustment is explained in full detail, the left-right direction here is demonstrated in the state which looked at the fire extinguishing button 15 from the front.

First, when the rotation angle of the point-extinguishing button 15 is 0 to 15 °, as shown in FIGS. 3 and 8, the thick portion 103 of the operation cam 94 is the action portion of the levers 92a and 93a of both the micro switches 92 and 93. Both microswitches 92 and 93 are turned off further to the left than 92b and 93b. In this combination of OFF / OFF signals, the controller turns off (closes) the upper and lower switching electromagnetic valves 24 and 26 for the upper flow path 21 and the lower flow path 22 respectively, so that the amount of gas supplied to the upper and lower burners 17 and 18 is Each is the minimum, and each firepower is "weak".
If the rotation angle of the point-extinguishing button 15 is 0 °, the left side plate of the operation side interlocking portion 106 abuts against the right regulating piece 113 of the rotation stop member 96 as shown in FIG. Rotation is regulated.

  Next, when the turning angle of the fire extinguishing button 15 is 15 to 45 °, as shown in FIG. 9, the operating cam 94 moves to the right side, so that the action portion 93b of the lever 92a of the first micro switch 92 on the left side. Relatively rides on the inclined portion 104 and moves directly onto the thick portion 103, so that the lever 92a swings upward and the first micro switch 92 is turned on. The second micro switch 93 on the right side remains OFF because the inclined portion 104 does not reach. In this ON / OFF signal combination, the controller turns on (opens) the lower switching electromagnetic valve 26 of the lower flow path 22, so that the amount of gas supplied to the lower burner 18 increases in addition to the lower bypass flow path 25. . Therefore, the fire power of the lower burner 18 is “strong”. The upper burner 17 remains “weak”.

  Here, as shown by the arrow in FIG. 8B, the tangent line S passing through the tip of the inclined portion 104 is defined with respect to the circumference of the operation cam 94 as the slide locus of the bottom surface of the operation cam 94. In this case, the rising angle θ1 of the inclined portion 104 with respect to the tangent line S acts on the tangent line S when the operating portion 92b of the lever 92a of the first microswitch 92 is located at the tip of the inclined portion 104 (indicated by a two-dot chain line). It is smaller (acute angle) than the rising angle θ2 of the portion 92b. Therefore, when the operation cam 94 moves and the action portion 92b rides on the inclined portion 104, the action portion 92b smoothly rides on the inclined portion 104 having a shallower angle than itself and swings the lever 92a upward. Therefore, resistance is less likely to occur in the rotation operation of the point fire button 15. This is the same when riding on the inclined portion 104 on the opposite side, and the same applies to the action portion 93b of the lever 93a of the second microswitch 93.

  Next, when the turning angle of the point-extinguishing button 15 is 45 to 75 °, as shown in FIG. 10, the operating cam 94 is further moved to the right side, so that the action portion of the lever 93a of the second micro switch 93 on the right side. Since 93b also rides on the inclined portion 104 and moves on the thick portion 103, the lever 93a swings upward and the second micro switch 93 is also turned on. In this ON / ON signal combination, the controller turns off the lower switching electromagnetic valve 26 of the lower flow path 22 and turns on the upper switching electromagnetic valve 24 of the upper flow path 21, so that the amount of gas supplied to the lower burner 18 decreases. However, the amount of gas supplied to the upper burner 17 increases. Therefore, the thermal power of the upper burner 17 is “strong”, and the thermal power of the lower burner 18 is “weak”.

  Next, when the rotation angle of the point-extinguishing button 15 is 75 to 90 °, as shown in FIG. 11, the operation cam 94 moves further to the right side, so that the action portion of the lever 92a of the first micro switch 92 on the left side. Since 92b relatively descends the left inclined portion 104 and disengages from the thick portion 103, the lever 92a swings downward and the first micro switch 92 is turned OFF. The second micro switch 93 remains ON. In this combination of OFF / ON signals, the controller turns on both the upper switching electromagnetic valve 24 of the upper flow path 21 and the lower switching electromagnetic valve 26 of the lower flow path 22, so that the amount of gas supplied to the upper burner 17 is also bypassed. The flow path 23 is added to increase. The amount of gas to the lower burner 18 remains the same. Accordingly, the heating power of the upper and lower burners 17 and 18 is “strong”.

And when the rotation angle of the point-extinguishing button 15 is 90 °, the right side plate of the operation side interlocking portion 106 abuts on the left side regulation piece 112 of the anti-rotation member 96, so that further clockwise rotation is regulated. It is possible to prevent the operation-side interlocking unit 106 from getting over the left regulation piece 112.
Thus, the upper bypass passage 23 and the upper switching solenoid valve 24, the lower bypass passage 25 and the lower switching solenoid valve 26 provided in the upper and lower passages 21 and 22 to the upper and lower burners 17 and 18 are added with a controller. A gas amount changing means is configured.

[Explanation of point-extinguishing operation in push switch mechanism]
The operation from ignition to extinguishing in the push switch mechanism 30 in the grill 4 of the built-in stove 1 configured as described above will be described with reference to FIGS. In addition, each figure (A) shows the same up-and-down side surface as FIG. 4, each figure (B) shows a bottom face, the cover 37 is abbreviate | omitted, and only the rear long hole 55 and the front long hole 56 are shown with the virtual line. ing. The operation of the push switch mechanism in the stove unit 3 is the same as that of the grill unit 4 except for the configuration of the heating power adjustment unit 90.
First, in a state where the point fire button 15 is not operated, as shown in FIG. 12, the front cam 34 has a rear end of the front lever pin 53 through a front long hole 56 and a front center of the front circulation portion 66 of the front cam groove 64. By being locked, the front coil spring 78 is slightly rearward (initial position) against the urging force of the front coil spring 78. The rear cam 35 is in a front position where it abuts against the partition plate 40 by the bias of the rear coil spring 79, and the front end of the rear lever pin 47 is positioned in the rear straight portion 76 of the rear cam groove 74 via the rear elongated hole 55. ing.

In this state, the point-extinguishing button 15 in which the front cam 34 and the back-and-forth movement are integrated has a cap 86 slightly protruding from the front surface of the body 2 (here, indicated by the line L on the front surface of the front panel 7) to the line L. It is in a position along. Here, the cam plate portion 63 of the front cam 34 protrudes rearward from the partition plate 40, but the escape cam 73 is formed in the rear cam 35, so that the cam plate portion 63 does not interfere with the rear cam 35. Is superposed on the bottom surface of the escape recess 73.
In this state, the rear rod 70 of the rear cam 35 is spaced forward from the valve shaft 82, so that the valve shaft 82 of the flow path opening / closing portion 32 is in the forward position and the magnet electromagnetic valve 19 and the main valve 20. Is closed (fire extinguishing position). The left and right arms 71 and 72 of the rear cam 35 are also spaced forward from the levers 38 a and 39 a of the board switch 38 and the igniter switch 39.

When the fire extinguishing button 15 is pushed in from here, as shown in FIG. 13, the front rod 61 of the retracted front cam 34 passes through the through hole of the partition plate 40 and comes into contact with the rear cam 35, and the rear cam 35 is moved to the rear coil spring. Retreat against 79 forces. Then, after the retreat, the rear rod 70 of the cam 35 abuts on the valve shaft 82 to retract the valve shaft 82, and the retracted valve shaft 82 is pushed in the state where the magnet electromagnetic valve 19 is forcibly opened. Regulated (ignition press-off position). At this time, the rear end of the front lever pin 53 moves in the front circulation portion 66 and is located at the left front end thereof, and the front end of the rear lever pin 47 moves in the rear circulation portion 75 and is located in the right front end thereof. A step portion is formed at the bottom of the front cam groove 64 and the rear cam groove 74 to restrict the moving direction of the end portions of the front lever pin 53 and the rear lever pin 47 to the right rotation direction in FIG. Since the lever pins 53 and 47 are pressed against the bottoms of the cam grooves 64 and 74 by the holding springs 54 and 48, they are guided only in one direction without escaping from the cam grooves 64 and 74.
Further, when the front cam 34 moves backward, the cam plate portion 63 protruding rearward slides on the bottom surface of the relief recess 73 of the rear cam groove 74, so that the front cam 34 moves backward via the cam plate portion 63. It is guided by the relief recess 73 of the cam 35 and can move smoothly. At this time, the cam plate portion 63 does not interfere with the rear cam groove 74. Further, since guide protrusions 68 and 77 are formed in the front-rear direction on the outer peripheral surfaces of the front cam 34 and the rear cam 35, the front cam 34 and the rear cam 35 can be smoothly moved back and forth without being twisted in the mechanical box 33.

  At this ignition cutoff position, the main valve 20 is opened together with the magnet electromagnetic valve 19, and fuel gas is supplied into the gas flow path of the flow path opening / closing section 32. Therefore, the fuel gas is supplied to the upper and lower burners 17 and 18. At the same time, the left arm 71 of the rear cam 35 pushes the lever 38a of the substrate switch 38 and the right arm 72 pushes the lever 39a of the igniter switch 39 in turn to turn on both switches 38, 39. The valve 19 is energized and the igniter is activated to perform an ignition operation.

Next, when the push-off of the fire extinguishing button 15 is released from the ignition push-off position, the front cam 34 has the locking surfaces 62 and 62 held by the stopper 49 of the box body 36 by the bias of the front coil spring 78 as shown in FIG. , 49 to move to the forward position. During the forward movement, the recess 65 is formed in the upper front portion of the front cam 34, so that it does not interfere with the front pin receiving portion 52 on the mechanical box 33 side.
As the front cam 34 advances, the point extinguishing button 15 also advances, and protrudes forward more greatly than the front surface of the front panel 7. At this time, the rear end of the front lever pin 53 moves from the front circulation portion 66 to the front straight portion 67 and is located near the rear end. Further, the rear cam 35 is restrained from moving forward by the front coil spring 79 being biased so that the front end of the rear lever pin 47 moves in the rear circulation portion 75 and is locked at the front center. A locking protrusion 55a (FIGS. 5 and 13) that is lightly locked to the front end of the rear lever pin 47 is formed at the front edge of the rear long hole 55, and the rear lever pin 47 moves unexpectedly from the locking position. To prevent that.

In this state, since the magnet electromagnetic valve 19 is held open by energization in the flow path opening / closing section 32, the valve shaft 82 does not move, and the main valve 20 is also opened to supply fuel gas. Continued (burning position). Further, the left arm 71 of the rear cam 35 is in a state where the lever 38a of the board switch 38 is pushed in, and the board switch 38 is kept on, and the right arm 72 is separated from the lever 39a of the igniter switch 39 and the igniter switch 39 is turned on. Turn it off.
Further, when the point-extinguishing button 15 is rotated, the operation cam 94 is slid through the interlocking body 95 as described above, and the first and second micro switches 92 and 93 are turned ON / OFF. The heating power of the upper and lower burners 17 and 18 can be adjusted by turning the electromagnetic valves 24 and 26 on and off. When the ON / OFF operation of the first and second micro switches 92 and 93 is switched according to the rotation of the point-extinguishing button 15, the controller generates an electronic sound that notifies the user of the switching of the thermal power.

Then, when the fire extinguishing button 15 is pushed in from the combustion position, as shown in FIG. 15, the front cam 34 moves backward, and the rear end of the front lever pin 53 moves in the front circulation portion 66 and is locked to the right front end thereof. By doing so, the push-in is regulated (fire extinguishing position). When the front cam 34 is pushed in, it is pressed by the front rod 61 and the rear cam 35 is also retracted, and the front end of the rear lever pin 47 moves in the rear circulation portion 75 and is positioned near the left front end.
Also at this time, when the front cam 34 moves backward, the cam plate portion 63 again overlaps with the bottom surface of the relief recess 73 of the rear cam groove 74 and comes into sliding contact with the bottom surface. Is guided by the escape recess 73 of the rear cam 35 and can move smoothly.

  When the hand is released from the point fire extinguishing button 15 at this fire extinguishing position, the front cam 34 is moved by the front coil spring 78 and the rear end of the front lever pin 53 moves in the front circulation portion 66 and is locked to the front center. Return to the position of FIG. The rear cam 35 also returns to the position of FIG. 12 where the front end of the rear lever pin 47 moves from the rear circulation portion 75 to the rear straight portion 76 and contacts the partition plate 40. Thereafter, since the left arm 71 is moved away from the lever 38a of the substrate switch 38 by the advance of the cam 35 and the substrate switch 38 is turned off, the controller stops energizing the magnet electromagnetic valve 19 and closes the magnet electromagnetic valve 19. . As a result, the valve shaft 82 also moves forward in the flow path opening / closing section 32 to close the main valve 20, so that the supply of fuel gas is stopped and the upper and lower burners 17, 18 are extinguished.

When the fire extinguishing button 15 is rotated at the combustion position in FIG. 14 to adjust the heating power, the operation side interlocking portion 106 of the interlocking body 95 is on the left side or right side restricting piece 112 of the detent member 96 at both ends of the rotation range. 113, the interlocking body 95 can be prevented from getting over the left or right restricting pieces 112, 113, and further rotation can be restricted. In particular, the anti-rotation member 96 is provided in front of the insertion portion of the operation side interlocking portion 106 and the cam side interlocking portion 105, and the left and right restricting pieces 112, 113 are in front of the operation side interlocking portion 106. Since they are in contact with each other, it is possible to more reliably prevent the interlocking body 95 from getting over.
However, since the operation side interlocking portion 106 is formed of a resin having a lower strength than the rotation stopper member 96, if an excessive rotational force is applied to the fire extinguishing button 15, the operation side interlocking portion 106 may be damaged first. become. For this reason, the cam side interlocking part 105 and the operation cam 94 loosely inserted in the operation side interlocking part 106 are in a non-fixed state and fall from the upper surface 36 a of the box body 36. Therefore, even if the interlocking body 95 is damaged, the point-extinguishing button 15 can be pushed to the fire extinguishing position, and the upper and lower burners 17 and 18 can be surely extinguished.

[Effect of the invention relating to the thermal power adjustment unit]
Thus, according to the built-in stove 1 of the said form, the fixed plate 91 is fixed to the mechanical box 33 in which the cam mechanism part 31 is accommodated in the left-right direction, and it is 1st, 2nd on the front surface of the fixed plate 91. The microswitches 92 and 93 are fixed side by side in the left-right direction, and the operation cam 94 is circumferentially below the levers 92a and 93a of the first and second microswitches 92 and 93 in conjunction with the rotation of the fire extinguishing button 15. The levers 92a and 93a are swung up and down. Therefore, even if the grill portion 4 having the upper and lower burners 17 and 18 is provided and the heating power of the upper and lower burners 17 and 18 is adjusted based on the ON / OFF operation of the first and second micro switches 92 and 93, the assembly is performed. It is possible to easily check the assembled state. Even when the first and second micro switches 92 and 93 are turned on and off, the operation cam 94 has a simple shape in which the inclined portions 104 and 104 are provided at both ends of the thick portion 103.

In particular, here, V-shaped action portions 92b and 93b are formed at the distal ends of the levers 92a and 93a, and action portions 92b and 93b to the action cam 94 are provided at both ends in the circumferential direction of the action cam 94. Are formed so that the rising angle θ1 of the inclined portion 104 from the tangent line S to the circumferential direction is smaller than the rising angle θ2 of the action portions 92b and 93b from the tangential line S. Yes. Therefore, it is possible to prevent the operation cam 94 from strongly hitting the levers 92a, 93a of the first and second micro switches 92, 93, and the operational feeling of the point-extinguishing button 15 at the time of adjusting the thermal power is not impaired.
Further, notches 97 and 97 are formed on the side edge of the fixing plate 91, and the lead wire 101 extending from the first and second microswitches 92 and 93 is engaged with the notch 97 and drawn backward to be fixed. Since they are bound to each other behind the plate 91, the plurality of lead wires 101, 101,... Of the first and second microswitches 92, 93 can be combined, and workability during assembly and maintenance is improved. .

  In the above embodiment, the two micro switches are arranged side by side in the direction in which the action parts are adjacent to each other. However, the action parts are oriented in the same direction on either the left or right side or in different outward directions. It can also be arranged. The action part is not limited to the V shape, and may be a semicircular shape.

[Effect of the invention relating to the rotation preventing member]
Thus, according to the built-in stove 1 of the said form, it moves to the point-extinguishing button 15 side back and forth integrally with pushing operation of the point-extinguishing button 15, it cannot rotate, and the predetermined | prescribed rotation limit angle ( (0 ° and 90 °) is provided with a rotation preventing member 96 that abuts on the operation side interlocking portion 106 and restricts further rotation, thereby effectively rotating the point-extinguishing button 15 beyond the rotation limit angle. It is possible to prevent damage and deformation of the interlocking body 95 that is interlocked with the point-extinguishing button 15.
In particular, here, the anti-rotation member 96 can be separated from the coupling portion with the cam-side interlocking portion 105 by contacting the operation-side interlocking portion 106 at a position close to the fire extinguishing button 15 side in the operation-side interlocking portion 106. Further, it is possible to more reliably prevent the rotation preventing member 96 from getting over.

The operation cam 94 is provided integrally with the cam-side interlocking unit 105 and is placed on the box body 36 that houses the cam mechanism unit 31. As described above, when an excessive rotational force is applied to the point-extinguishing button 15 and the interlocking body 95, the interlocking body 95 is damaged at the operation-side interlocking portion 106 that is in contact with the anti-rotation member 96. At this time, since the cam-side interlocking portion 105 and the operation cam 94 are completely unfixed, the cam-side interlocking portion 105 and the operation cam 94 fall downward from the box body 36 and the operation of the fire extinguishing button 15 is performed. It won't interfere. That is, even if the operation-side interlocking unit 10 is damaged, the pushing operation of the point-extinguishing button 15 can be ensured, and at least the fire can be extinguished.
Further, since the operation side interlocking portion 10 is lower in strength than the cam side interlocking portion 105, it can be more reliably damaged by the operation side interlocking portion 10, and the cam side interlocking portion 105 and the operation cam 94 can be reliably connected. Can be dropped.

In the above-described embodiment, the cam side interlocking portion is loosely inserted into the operation side interlocking portion, but conversely, the operation side interlocking portion may be loosely inserted into the cam side interlocking portion. In addition, the two interlocking portions are not limited to a semi-cylindrical shape, and the shape can be changed as appropriate, for example, one is plate-shaped and the other is cylindrical.
Further, the shape of the anti-rotation member can be changed as appropriate, and the restriction piece is not limited to the case where it is provided on the left and right in accordance with both ends of the rotation limit angle, but can be provided only on the maximum side (here, 90 ° left restriction piece 112). . The contact position with the operation side interlocking unit can also be changed back and forth.
In addition, the difference in strength between the operation side interlocking part and the cam side interlocking part is not limited to the difference in resin material, but the difference in shape and structure, for example, even if the same resin material is used, The operation side interlocking part may be damaged first by making it thinner than the thickness of the interlocking part or by providing a through hole in the operation side interlocking part.
In the above embodiment, the rotation prevention member is provided in the push switch mechanism of the grill part. However, the rotation switch of the operation member may be restricted by providing a rotation prevention member in the push switch mechanism of the stove part.

In addition, in common with each invention, the shape of the two cams of the cam mechanism and the shape of each cam groove are not limited to the above-mentioned forms, and can be changed as appropriate. For example, a cam plate portion serving as an overlapping portion is provided on the rear cam. It can be brought into sliding contact with the front cam, or an overlapped portion without a cam groove can be provided. The shape and position of the front and rear lever pins and front and rear elongated holes can also be changed.
In the above embodiment, cam grooves are provided on the two cams and lever pins are provided on the side of the mechanical box that holds the cams. Conversely, lever pins are provided on the two cams, and cam grooves are provided on the side of the mechanical box. Even if the first and second cams are provided, the front and rear positions of the two cams can be changed by pressing the point-extinguishing button.
Furthermore, the cam mechanism portion is not limited to two cams, and even if the cam mechanism portion is a single cam, it is possible to adjust the heating power using two microswitches and to restrict the rotation of the operation member using a non-rotating member. is there.

  The form of the built-in stove is not limited to the above description, and the stove unit may have two units. The present invention is not limited to the built-in stove, and may be applied to other gas cooking utensils such as a table stove. is there.

  1 .... Built-in stove, 2 .... Body, 3 .... Hot part, 4 .... Grill part, 5 .... Main body, 7 .... Front panel, 10 .... Combo burner, 15 .... Fire extinguishing button, 17 ....・ Upper burner, 18 ・ ・ Lower burner, 19 ・ ・ Magnetic solenoid valve, 20 ・ ・ Main valve, 21 ・ ・ Upper flow path, 22 ・ ・ Lower flow path, 24 ・ ・ Upper switching solenoid valve, 26 ・ ・ Lower switching solenoid valve , 30 ·· Push switch mechanism, 31 ·· Cam mechanism portion, 32 ·· Flow path opening / closing portion, 33 ·· Mechanical box, 34 ·· Front cam, 35 ·· Rear cam, 36 ·· Box body, 36a ·· Upper surface, 37 ... Cover, 38 ... Board switch, 39 ... Igniter switch, 40 ... Partition plate, 47 ... Rear lever pin, 53 ... Front lever pin, 55 ... Rear slot, 56 ... Front slot 64, front cam groove, 68, 77, guide protrusion, 4 .... rear cam groove, 80 ... gas inlet, 81 ... gas outlet, 82 ... valve stem, 90 ... thermal power adjustment part, 91 ... fixed plate, 92 ... first micro switch, 92a, 93a ... ..Lever, 92b, 93b..Operating portion, 93..Second micro switch, 94..Operating cam, 95..Interlocking body, 96..Rotating stop member, 97..Incision, 101..Lead wire, 103 ··· Thick part, 104 ·· Inclined part, 105 ·· Cam side interlocking part, 106 ·· Operating side interlocking part, 112 ·· Left side regulating piece, 113 ·· Right side regulating piece, S ·· Tangential, L · · Front of the front panel.

Claims (3)

In the body having a grill portion provided with an upper burner and a lower burner, a front operation member, and a rear flow passage opening / closing portion provided with a valve shaft for opening and closing a gas flow passage to the upper burner and the lower burner, A cam that is movable back and forth between the operation member and the flow path opening / closing portion, and by changing the front and rear positions of the cam by repeatedly pushing the operation member, the valve shaft is connected to the gas flow path. A cam mechanism that moves back and forth to a fire extinguishing position that closes the gas flow and a combustion position that opens the gas flow path, and a thermal power that adjusts the thermal power of the upper burner and the lower burner at the combustion position by rotating the operation member And an adjustment section,
The thermal power adjustment unit is provided below the two micro switches arranged with the levers facing downward, respectively, and is centered on the rotation center of the operation member in conjunction with the rotation of the operation member. The upper burner and the lower burner according to a combination of an operation cam that moves in the circumferential direction and swings each lever up and down, and an ON / OFF operation of the two micro switches by swinging each lever A gas cooking utensil comprising gas amount changing means for changing the gas amount to
A fixing plate is fixed in the left-right direction in the case in which the cam mechanism portion is accommodated, and the two micro switches are fixed in the left-right direction on the front surface of the fixing plate,
The operation cam swings the levers up and down by moving in the circumferential direction below the levers of the two micro switches in conjunction with rotation of the operation member. Gas cookware.   A V-shaped action part is formed at the tip of each lever, and inclined parts are formed at both ends in the circumferential direction of the operation cam to guide the action part to get in and out of the action cam. The gas cooker according to claim 1, wherein a rising angle of the inclined portion from a tangential direction with respect to the circumferential direction is smaller than a rising angle of the action portion from the tangential direction.   Cuts are formed in the side edges of the fixed plate, and the wires extending from the two microswitches are locked to the cuts and routed backward, and are bound to each other behind the fixed plate. The gas cooker according to claim 1 or 2, characterized in that

Images