JP2017009242A - Gas cooking stove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas cooking stove capable of acquiring a click feeling by predetermined fire power when adjusting the fire power, with a simple constitution.SOLUTION: An operation shaft 50 is pivotally supported by a valve body 21 of a fire power adjustment device 20 in a rotatable manner. A rotary plate 60 rotates integrally with the operation shaft 50. In front of the rotary plate 60, an engaging hole 66 is provided. A plate spring 70 is fixed via a supporting member 40 to the valve body 21, and extends to the front surface side of the rotary plate 60 from a fixing part 71 which is fixed to the supporting member 40. A pin 78 provided at a tip part of the plate spring 70 is arranged on a rotation locus of the engaging hole 66 for rotating according to the rotation of the rotary plate 60. The plate spring 70 energizes the tip part in which the pin 78 is provided to the front surface side of the rotary plate 60. When the rotary plate 60 rotates to a position of being switched to predetermined fire power, the pin 78 is engaged with the engaging hole 66. An impact at this time is transmitted to the hand of a user as a click feeling.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a gas stove.

  In the push-and-push type gas stove, there has been proposed a gas stove that provides a click feeling with a predetermined heat power when adjusting the heat power. For example, a holding plate that supports an operation component inserted and disposed in the operation shaft is provided, and a rotating plate that comes into contact with the holding plate is inserted and arranged so as to rotate integrally with the operation shaft. Provided with grooves or protrusions containing metal balls on the surface and holes or grooves on the contact surface of the pressing plate, or provided with convex pieces on the outer periphery of the rotating plate and protruding on the contact surface of the pressing plate There has been proposed a stove provided with a protrusion that comes into contact with and engages with the end of one piece (see, for example, Patent Document 1).

JP 2008-1405050 A

  The stove described in Patent Document 1 has a problem that it is difficult to assemble and disassemble because the structure for obtaining a click feeling is complicated.

  An object of the present invention is to provide a gas stove having a simple structure and capable of obtaining a click feeling with a predetermined heating power when adjusting the heating power.

  A gas stove according to a first aspect of the present invention is a gas stove provided with a thermal power control device that adjusts the thermal power of a burner, wherein the thermal power control device is pivotally supported by the main body portion and the main body portion, and the thermal power control An operating shaft that is rotationally operated for the purpose, a rotating plate that is provided integrally with the operating shaft and rotates around the operating shaft, and a groove or a hole provided on one surface of the rotating plate, A leaf spring fixed to the main body portion and extending from the fixed portion fixed to the main body portion to the one surface side of the rotating plate; and provided at a tip portion of the leaf spring and rotating the rotating plate A pin that is disposed on a turning locus of the groove or the hole that rotates with the pin and engages with the groove or the hole when the rotating plate is rotated to a predetermined thermal power position. The leaf spring has the tip provided with the pin on the rotating plate. And wherein the biasing to the serial one side.

  A gas stove according to a second aspect of the present invention is the gas stove of the invention according to the first aspect. In addition to the configuration of the first aspect, the thermal power control device reduces the thermal power while pushing a knob provided on the operational shaft in the axial direction of the operational shaft. It has a function of opening a gas flow path to the burner by performing an ignition operation that rotates in one direction, which is a direction when adjusting from a thermal power to a large thermal power, and the rotating plate is centered on the operation shaft One end on the downstream side in the one direction, which is formed in a substantially fan shape, and rotates together with the operation shaft among both ends in the outer peripheral direction of the rotating plate before the ignition operation and when the burner is extinguished. And is disposed with a gap from the one end on the downstream side to the one direction side, and during the ignition operation, the pin is located on the downstream side of the rotating plate that rotates in the one direction. Ride on one side from one end side, The end portion of the flow side, characterized in that slide toward the other end of the upstream side of the opposite side.

  The gas stove of the invention according to claim 3 is characterized in that, in addition to the configuration of the invention of claim 2, play is provided in the rotation direction of the operation shaft with respect to the operation shaft before ignition operation and during fire extinguishing. And

  A gas stove according to a fourth aspect of the invention includes, in addition to the configuration of the invention according to the second or third aspect, urging means for urging the operation shaft on a side opposite to a direction in which the knob is pushed, The rotating plate rotates in a state of being pushed together with the operation shaft.

  A gas stove according to a fifth aspect of the present invention is the gas stove of the invention according to any one of the second to fourth aspects, in addition to the rotation at the contact point where the tip of the pin contacts the one surface of the rotary plate. The one direction in which the plate rotates together with the operation shaft is substantially opposite to the direction from the fixed portion fixed to the main body portion of the leaf spring toward the tip portion, and the axial direction of the pin Is inclined in a direction away from the fixed portion side with respect to a direction perpendicular to the one surface of the rotating plate at the contact point.

  The gas stove of the invention according to claim 6 is characterized in that, in addition to the configuration of the invention according to any one of claims 1 to 5, the inner edge of the groove or the hole is formed in a tapered shape. And

  The gas stove of the invention according to claim 7 is the configuration of the invention according to any one of claims 1 to 6, and the predetermined thermal power position is a thermal power position between a medium thermal power and a small thermal power. It is characterized by.

  In the gas stove according to the first aspect of the present invention, when the user rotates the operation shaft to adjust the heating power of the burner and the rotating plate rotates to a predetermined heating power position, the gas stove is provided at the tip of the leaf spring. The provided pin engages with a groove or a hole provided in the rotating plate. Thereby, when adjusting the thermal power, a click feeling can be obtained with a predetermined thermal power. Therefore, the thermal power can be easily adjusted by using the click feeling as a clue. And since it has a simple structure in which a rotation plate is provided on the operating shaft and a leaf spring provided with a pin at the tip is simply attached to the gas stove, it is easy to install, and maintenance such as repair and replacement is easy. Can be kept cheap.

  In the gas stove according to the second aspect of the invention, in addition to the effect of the first aspect of the invention, before the ignition operation, the pin provided at the tip of the leaf spring is detached from the rotating plate to leave a gap. Are arranged. That is, before the ignition operation, since the rotating plate does not contact the leaf spring, no load is applied to the leaf spring. Thereby, durability of a leaf | plate spring can be improved.

  In addition to the effect of the invention according to claim 2, the gas stove of the invention according to claim 3 is within the range of play when the operation shaft is turned without being pushed by an erroneous operation of the user before the ignition operation. Since it only rotates, even if the rotating plate contacts the leaf spring, no load is applied to the leaf spring. Thereby, the durability of the leaf spring can be further improved.

  In addition to the effect of the invention of claim 2 or 3, the gas stove of the invention according to claim 4 rotates in a state in which the pin moves in a direction away from one side of the rotating plate when the knob is pushed around during the ignition operation. Slide on one side of the moving plate. Thereby, when the pin slides on one side of the rotating plate, the leaf spring only bends to a small extent, so that the click feeling that occurs when the pin passes through the groove or hole can be alleviated. Therefore, the user can perform the ignition operation without a sense of incongruity.

  In addition to the effect of the invention according to any one of claims 2 to 4, the gas stove of the invention according to claim 5 can exhibit the following effect. If the tip of the pin slides perpendicularly to one side of the rotating plate, the rotating plate and the operation shaft are in one direction (substantially opposite to the direction from the leaf spring fixed portion to the tip). When rotating in the direction), the leaf spring is easily pulled out from the groove or hole because it is pulled to the opposite side of the fixed part via the pin engaging the groove or hole. On the other hand, when the rotating plate rotates in the direction opposite to the one direction together with the operation shaft, the leaf spring is pushed into the fixed portion side via the pin that engages with the groove or the hole. It is hard to come off. Therefore, in the present invention, the axial direction of the pin is inclined in a direction away from the fixed portion side with respect to a direction perpendicular to one surface of the rotating plate at a contact point between the tip of the pin and one surface of the rotating plate. . Accordingly, it is possible to make it easy to remove the pin from the groove or hole when the rotating plate rotates together with the operation shaft in the opposite direction to the one direction. Therefore, it is possible to align the click feeling that occurs when the operating shaft is rotated in one direction and in the opposite direction.

  In addition to the effect of the invention according to any one of claims 1 to 5, the gas stove of the invention according to claim 6 can naturally engage and disengage the pin from the groove or hole. Can get a sense of click.

  In addition to the effect of the invention according to any one of claims 1 to 6, the gas stove of the invention according to claim 7 is configured to reduce the thermal power when, for example, the thermal power is reduced from medium thermal power to small thermal power in cooking such as boiled food. It can prevent the fire from extinguishing too much.

1 is a perspective view of a gas stove 1. FIG. 3 is a perspective view of a thermal power adjustment device 20. FIG. 3 is a right side view of the thermal power control device 20. 2 is a left side view of a thermal power control device 20. FIG. 2 is a front view of a thermal power control device 20. FIG. FIG. 6 is a cross-sectional view taken along the line I-I in FIG. 5. 3 is a front view of a rotating plate 60. FIG. 3 is a side view of a leaf spring 70. FIG. It is a front view (at the time of ignition) of the thermal power control apparatus 20. It is a front view of the thermal power control device 20 (at the time of medium thermal power). It is a front view of the thermal power control device 20 (when a click occurs). It is a front view of the thermal power control device 20 (at the time of small thermal power). It is a figure (at the time of ignition) which shows the positional relationship of the rotation board 60 and the leaf | plate spring 70. It is a figure which shows the positional relationship of the rotation board 60 and the leaf | plate spring 70 (at the time of clicking generation | occurrence | production). It is a figure which shows the positional relationship of the rotation board 60 and the leaf | plate spring 170 (at the time of a large thermal power). It is a figure which shows the positional relationship of the rotation board 60 and the leaf | plate spring 170 (at the time of clicking generation | occurrence | production).

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The gas stove 1 shown in FIG. 1 is a table cooker with a grill provided with push-type knobs 11 to 13, but may be a table cooker without a grill or a built-in stove installed on a countertop of a kitchen. In the following description, the top, bottom, left and right, front and back indicated by arrows in the figure are used.

  With reference to FIG. 1, the external structure of the gas stove 1 is demonstrated. The gas stove 1 includes a horizontally long substantially rectangular parallelepiped instrument 2. A right stove 5 is provided on the right side of the top surface 4 of the instrument 2 and a left stove 6 is provided on the left side. An exhaust port 9 is provided behind the top surface 4. The exhaust port 9 is provided with a slit-shaped cover 9A. The exhaust port 9 communicates with the inside of a grill box (not shown) provided in the appliance 2. A grill opening (not shown) provided in the front surface of the grill cabinet is provided in the center of the front surface of the appliance 2. A grill door 10 is provided at the grill opening so as to be movable in the front-rear direction. When the grill door 10 is pulled out to the near side, a tray (not shown) and a grill net connected to the lower rear portion of the grill door 10 can be taken out from the grill cabinet at the same time.

  Knobs 11 and 12 are provided on the right side of the grill door 10 on the front surface of the appliance 2. A knob 13 is provided on the left side of the grill door 10. The knobs 11 to 13 are push-push type. The knob 11 is pushed about 90 ° counterclockwise when viewed from the front when the burner of the right stove 5 (hereinafter simply referred to as a burner) is ignited. After ignition, the heating power is adjusted from a large heating power to a small heating power by rotating clockwise. When the knob 11 is returned to the position before ignition, the burner is extinguished. Although not described in detail, the operation method of the knobs 12 and 13 is the same as that of the knob 11. The knob 12 is pushed to ignite a grill burner (not shown) in the grill cabinet, and the knob 13 is pushed to ignite the burner of the left stove 6.

  In the present embodiment, when the knobs 11 to 13 are rotated to adjust the heating power of various burners, when the heating power of the various burners is switched from medium heating power to small heating power, a light catching feeling (so-called “click feeling”) is provided. The knobs 11 to 13 can be given. A mechanism for giving a click feeling will be described later.

  A thermal power control device 20 (see FIG. 2) is provided at each position on the front side of the appliance 2 and corresponding to the knobs 11 to 13, respectively. For example, the thermal power control device 20 corresponding to the right stove 5 drives an igniter (not shown) that ignites the burner of the right stove 5 in accordance with the pushing operation of the knob 11 and supplies gas to the burner of the right stove 5 Adjust the amount. A battery box 15 is provided on the left side of the knob 13. The battery box 15 stores a dry battery (not shown) that supplies power to the gas stove 1.

  With reference to FIGS. 2-5, the structure of the thermal-power adjustment apparatus 20 is demonstrated. Since the thermal power control devices 20 corresponding to the various burners all have the same structure, the structure of the thermal power control device 20 corresponding to the burner of the right stove 5 will be described here. The thermal power control device 20 includes a valve body 21, a machine body 22, an operation mechanism 23, and the like. The valve body 21 is provided in the lower part of the thermal power control apparatus 20, and is formed in the substantially cylindrical shape extended substantially horizontal. The valve body 21 is a main body part of the thermal power adjusting device 20, and adjusts the amount of gas supplied to the burner of the right stove 5 by turning an operation shaft 50 described later of the operation mechanism 23. The body 22 is mounted on the upper part of the valve body 21 and is fixed by two screws 81 (see FIGS. 2 to 4). A substantially cylindrical gas discharge part 37 is provided on the upper part of the machine body 22. The machine body 22 discharges the gas flowing from the valve body 21 from the gas discharge unit 37 toward the burner of the right stove 5. The operation mechanism 23 is provided on the front side portion of the valve body 21. The operation mechanism 23 drives an igniter (not shown) provided in the vicinity of the burner of the right stove 5 by pushing and rotating the knob 11 (see FIGS. 3 and 4) fitted to the front end portion of the operation shaft 50. The amount of gas flowing through the valve body 21 is adjusted.

  The internal structure of the valve body 21 and the airframe 22 will be described with reference to FIG. The valve body 21 includes a gas flow path inside. The gas flow path extends in the axial direction of the valve body 21. The valve body 21 includes a spindle 25, a main valve 26, a safety valve 27, a gas inlet 29, a discharge port 31, a gas flow path 32, and the like. The spindle 25 is inserted into the gas flow path of the valve body 21 and can advance and retreat in the front-rear direction along the flow path. A front end portion of the spindle 25 is connected to a rear end portion of an operation shaft 50 of the operation mechanism 23 described later. The spindle 25 is pushed backward together with the operation shaft 50 by a pushing operation of the knob 11 fitted to the front end portion of the operation shaft 50. The main valve 26 is fixed to the spindle 25, and opens and closes a gas flow path to a discharge port 31 to be described later by pushing and turning the knob 11. The safety valve 27 is of a magnet type, and is opened rearward by a thermoelectromotive force during burner combustion of the right stove 5 by being pushed backward by a push operation of the knob 11 at the time of ignition.

  The gas inlet 29 is provided in the vicinity of the main valve 26. The gas inlet 29 opens downward and allows gas to flow into the gas flow path in the valve body 21. The discharge port 31 is provided on the inner peripheral surface of the gas flow path in the valve body 21 and on the downstream side of the main valve 26. The discharge port 31 changes the amount of gas discharged toward the gas flow path 32 according to the overlapping area with the spindle 25 that rotates together with the operation shaft 50. The gas flow path 32 extends upward from the discharge port 31, and an outlet thereof is provided to open at an upper portion of the valve body 21.

  The machine body 22 includes gas flow paths 33 to 35 therein. The outlet of the gas flow path 32 provided at the upper part of the valve body 21 communicates with the inlet of the gas flow path 33 provided at the lower part of the machine body 22. The gas sequentially flows through the gas flow paths 33 to 35 and is discharged from the gas discharge unit 37 toward the burner of the right stove 5.

  The structure of the operation mechanism 23 will be described with reference to FIGS. The operation mechanism 23 includes an operation shaft 50, a support member 40, a rotating plate 60, a leaf spring 70, a first spring locking member 51 (see FIGS. 3 and 4), and a second spring locking member 52 (FIGS. 3 and 4). 4), a return spring 53 (see FIGS. 3 and 4), a drive switch 55 (see FIG. 4), and the like.

  The operation shaft 50 will be described with reference to FIG. The operation shaft 50 is disposed substantially horizontally so as to extend in the front-rear direction, and the rear end side is inserted into the gas flow path from an opening (not shown) provided in the front end portion of the valve body 21, and the front end side is forward from the opening. (See FIGS. 2 and 3). A cross section perpendicular to the axial direction of the operation shaft 50 is formed in a substantially rectangular shape. The front end portion of the operation shaft 50 projects forward from between a left end portion of a right front wall portion 43 of the support member 40 described later and a cutout portion 44A provided at the right end portion of the left front wall portion 44 (see FIG. 2, see FIG. The knob 11 is fitted to the front end portion of the operation shaft 50. The rear end portion of the operation shaft 50 is connected to the front end portion of the spindle 25 in the gas flow path. The operation shaft 50 can be rotated together with the spindle 25 and can move back and forth in the front-rear direction, and pushes the spindle 25 rearward by pushing the knob 11.

  The structure of the support member 40 will be described with reference to FIGS. As shown in FIG. 2, the support member 40 is formed in a substantially inverted U shape that opens downward in a side view by bending a sheet metal, and is fixed to the front end portion of the valve body 21. The support member 40 includes a main body portion 41, an upper wall portion 42, a right front wall portion 43, a left front wall portion 44, and the like. The main body 41 is formed in a substantially rectangular shape that is vertically long when viewed from the front, and is provided with a substantially circular opening (not shown) at the approximate center thereof. The main body 41 is fixed to the front end of the valve body 21 with two screws 84 and 85. An operation shaft 50 that protrudes forward from the front end of the valve body 21 is inserted inside the opening of the main body 41 so as to be able to advance and retreat in the front-rear direction. A support portion 41 </ b> A (see FIG. 4) that extends back and extends backward is provided at a substantially central position in the vertical direction of the left end portion of the main body portion 41. A drive switch 55 described later is fixed to the support portion 41A. The upper wall portion 42 is formed in a substantially rectangular shape in plan view, and extends from the upper end portion of the main body portion 41 by folding forward.

  As shown in FIGS. 2 and 5, the right front wall portion 43 extends vertically downward from the right side at the front end portion of the upper wall portion 42 and is formed in a substantially rectangular shape in front view. An arcuate cutout 43 </ b> A is provided at the lower left corner of the right front wall 43. The notch 43A avoids interference with a pin 78 provided at the tip of a leaf spring 70 described later. A fixing hole (not shown) for fixing a later-described leaf spring 70 with a screw 82 is provided in the upper portion of the right front wall portion 43. Above the fixing hole, a pair of engagement holes 43B and 43C are provided with a gap in the left-right direction. A pair of locking pieces 75 (see FIG. 4 and FIG. 8), which will be described later, of the leaf spring 70 are locked in the pair of engaging holes 43B and 43C.

  The left front wall portion 44 is provided on the left side of the front end portion of the upper wall portion 42, extends vertically downward from a position extending forward from the position of the left front wall portion 44, and is formed in a substantially rectangular shape in front view. . Therefore, the left front wall portion 44 is disposed in front of the right front wall portion 43. An arcuate notch 44 </ b> A is provided at the lower right corner of the left front wall 44. The notch 44A avoids interference with the knob 11 (see FIG. 3) fitted to the front end of the operation shaft 50.

  The shape of the rotating plate 60 will be described with reference to FIGS. As shown in FIG. 2, the rotating plate 60 is fixed to the front end side of the operation shaft 50 that protrudes forward from the front end portion of the valve body 21. The rotating plate 60 is disposed at substantially the same position as the right front wall portion 43 in the front-rear direction (see FIG. 3). The rotating plate 60 rotates integrally with the operation shaft 50 around the operation shaft 50. As shown in FIG. 7, the rotating plate 60 includes a disk portion 61 and a sliding portion 62 and is formed in a substantially fan shape when viewed from the front. The disc portion 61 is formed in a substantially circular shape when viewed from the front, and a substantially rectangular insertion hole 65 is provided at a substantially central portion thereof. The operation shaft 50 is inserted into the insertion hole 65.

  The sliding part 62 is formed in a substantially fan shape when viewed from the front, and is provided along the outer peripheral part of the disk part 61. As the rotary plate 60 rotates, a pin 78 provided at the tip of a leaf spring 70 described later slides on the front surface of the sliding portion 62. When the sliding portion 62 is viewed from the front, the sliding portion 62 includes a downstream end portion 67 in the counterclockwise direction around the insertion hole 65 and an upstream end portion 68. The one end portion 67 is provided with a concave portion 67A that is recessed in an arc shape. The recess 67A is located on the locus of the pin 78 that slides on the front surface of the sliding portion 62. Furthermore, an engagement hole 66 is provided on the locus of the pin 78 in the sliding portion 62 and in the vicinity of the recess 67A. The front end portion of the pin 78 that slides on the front surface of the sliding portion 62 can be settled and engaged with the engaging hole 66. The engagement hole 66 is formed in a substantially elliptical shape that is slightly longer in the direction perpendicular to the locus of the pin 78 on the front surface of the sliding portion 62. The inner edge part of the engagement hole 66 is formed in a taper shape that tapers from the front side to the back side of the sliding part 62 (see FIG. 13).

  When the rotation plate 60 is attached to the operation shaft 50, as described above, the rotation plate 60 is formed in a substantially fan shape when viewed from the front, so that the front end portion of the operation shaft 50 protruding forward of the support member 40 is rotated. By inserting it into the insertion hole 65 of the moving plate 60 and pushing it back as it is, the rotating plate 60 is moved to the right front wall portion 43 without interfering with the notch portion 44A provided at the right end portion of the left front wall portion 44. And can be arranged at substantially the same position. Therefore, the mounting operation of the rotating plate 60 is easy. A portion where the operation shaft 50 is inserted into the insertion hole 65 is fixed by a fixing washer 58 having a substantially C shape in front view. Thereby, the rotating plate 60 is fixed to the operation shaft 50.

  The structure of the leaf spring 70 will be described with reference to FIGS. As shown in FIG. 2, the leaf spring 70 is fixed to the front surface of the right front wall portion 43 of the support member 40. The leaf spring 70 is formed by bending an elongated sheet metal extending downward from above, and extends from the portion fixed to the front surface of the right front wall portion 43 by a screw 82 to the front surface side of the rotating plate 60. As shown in FIG. 8, the leaf spring 70 includes a fixed portion 71, an inclined portion 72, a pin support portion 73, a pin 78, and the like in order from the top.

  The fixing portion 71 is a portion that is fixed along the front surface of the right front wall portion 43 of the support member 40 and extends in the vertical direction. The fixing portion 71 is formed in a substantially rectangular shape that is vertically long when viewed from the front, and includes a fixing hole (not shown), a pair of locking pieces 75, a positioning portion 76, and the like. The fixing hole is provided substantially at the center of the fixing portion 71. A screw 82 is inserted into the fixing hole and fastened to a fixing hole (not shown) provided in the right front wall portion 43 of the support member 40. A pair of locking pieces 75 (only one side is shown in FIG. 8) protrudes rearward from a position slightly above the fixing hole at both left and right ends of the fixing portion 71, and is formed in a substantially semicircular shape when viewed from the side. Yes. The pair of locking pieces 75 are respectively locked in a pair of engagement holes 43B and 43C (see FIG. 2) provided in the right front wall portion 43 of the support member 40. Therefore, the present embodiment can prevent the displacement of the right front wall portion 43 of the leaf spring 70 in the left-right direction. The positioning portion 76 protrudes backward from the upper end portion of the fixing portion 71 and is formed in a substantially semicircular shape. The positioning portion 76 is locked to the upper surface of the upper wall portion 42 of the support member 40. Therefore, this embodiment can easily position the right front wall portion 43 of the leaf spring 70 in the vertical direction.

  The inclined portion 72 is bent slightly forward from the lower end of the fixed portion 71 and extends obliquely downward. The inclined portion 72 is formed in a substantially rectangular shape that is vertically long when viewed from the front (see FIGS. 2 and 5). The pin support portion 73 is slightly bent from the front end portion of the inclined portion 72 to the rear side, and extends obliquely downward. The pin support portion 73 is formed in a substantially rectangular shape that is vertically long when viewed from the front (see FIGS. 2 and 5). The distal end portion of the pin support portion 73 is formed in a substantially arc shape.

  The pin 78 is made of metal and is supported by the pin support portion 73. The pin 78 includes a base portion 78A and a conical portion 78B on the same axis. The rear end surface of the base portion 78 </ b> A is fixed to the back surface of the pin support portion 73 by a rivet 77. The conical portion 78B is a tip portion of the pin 78 and is formed in a substantially conical shape. In a state where the leaf spring 70 is fixed to the front surface of the right front wall portion 43 of the support member 40, the pin 78 is disposed in the vicinity of the notch portion 43 </ b> A of the right front wall portion 43. The tip of the pin 78 is positioned on the rotation locus of the engagement hole 66 of the rotation plate 60 that rotates together with the operation shaft 50. Therefore, as the rotating plate 60 rotates, the tip of the pin 78 rides on the front surface of the rotating plate 60 and slides, and settles in the engagement hole 66. When the rotating plate 60 further rotates, the tip end portion of the pin 78 comes out of the engagement hole 66. As will be described later, the axial direction of the pin 78 is in a direction away from the fixed portion 71 side with respect to a direction perpendicular to the front surface of the rotating plate 60 at a contact point where the tip of the pin 78 contacts the front surface of the rotating plate 60. It is inclined (see FIG. 13). The effect of tilting the axial direction of the pin 78 will be described later.

  Other members will be described with reference to FIGS. The first spring locking member 51 is a substantially cylindrical member made of resin. The first spring locking member 51 is attached to the operation shaft 50 and is fixed to the back side of the rotating plate 60. The first spring locking member 51 includes a locking portion 51A and a biasing portion 51B. The locking portion 51 </ b> A is formed in a substantially cylindrical shape and is attached to the operation shaft 50. One end side in the axial direction of a substantially cylindrical return spring 53 attached to the operation shaft 50 is locked to the locking portion 51A. The urging portion 51B is formed in an arm shape and protrudes leftward from the left side portion of the locking portion 51A. The tip of the urging portion 51B comes into contact with a manipulator 56 of a drive switch 55, which will be described later, and urges upward (see FIG. 4).

  The second spring locking member 52 is also a substantially cylindrical member made of resin similar to the first spring locking member 51. The second spring locking member 52 is attached to the operation shaft 50 and is fixed to the front side of the main body 41 of the support member 40. The other end side in the axial direction of the return spring 53 is locked to the second spring locking member 52. The first spring locking member 51 and the second spring locking member 52 are separated from each other in the front-rear direction between the front surface of the main body 41 of the support member 40 and the back surface of the rotating plate 60. The return spring 53 is attached to the operation shaft 50 in a compressed state between the first spring locking member 51 and the second spring locking member 52.

  As shown in FIG. 4, the drive switch 55 is fixed to the support portion 41 </ b> A provided at the left end portion of the main body portion 41 of the support member 40 with a screw 86. The drive switch 55 is a switch for driving the igniter of the right stove 5. On the bottom side of the drive switch 55, an arm-shaped operation element 56 is provided. The operation element 56 is pivotally supported at the base end side, and the front end side extending forward is rotatable in the vertical direction. The urging portion 51B of the first spring locking member 51 is in contact with the distal end portion of the operation element 56 from below. When the tip of the operation element 56 is biased upward, a micro switch (not shown) provided on the bottom surface of the drive switch 55 is pushed upward by the operation element 56 to be turned off. On the other hand, when the first spring locking member 51 is rotated together with the operation shaft 50 by the pushing operation of the knob 11, the urging portion 51B moves downward, so that the distal end portion of the operation element 56 also moves downward. At this time, the microswitch (not shown) is turned on.

  Next, the state before the ignition operation of the thermal power control device 20 (when extinguishing) will be described. As shown in FIG. 1, the portion gripped by the hand of the knob 11 before the ignition operation is in a state of facing up and down. As shown in FIG. 4, the urging portion 51 </ b> B of the first spring locking member 51 attached to the operation shaft 50 abuts against the distal end portion of the operation element 56 of the drive switch 55 from below and urges upward. To do. The micro switch on the bottom surface of the drive switch 55 is pushed upward and is in an off state.

  As shown in FIGS. 2 and 5, the one end 67 of the rotating plate 60 is disposed with a gap in the clockwise direction with respect to the pin 78 of the leaf spring 70. As shown in FIGS. 3 and 4, the rotating plate 60 is urged forward by the return spring 53, and thus is disposed at substantially the same position as the right front wall portion 43 of the support member 40. In this state, as shown in FIG. 5, the pin 78 is not in contact with the one end 67 of the rotating plate 60. Therefore, since the load is not applied to the leaf spring 70 before the ignition operation, the durability of the leaf spring 70 can be improved.

  Further, in the state before the ignition operation, unless the knob 11 is pushed and turned, the operation shaft 50 does not turn inside the valve body 21, but a predetermined play is provided in the turning direction. Yes. Therefore, even if the user rotates the knob 11 without pressing the knob 11 by mistake in the state before the ignition operation, the operation shaft 50 only rotates within a predetermined play range. No load is applied. Therefore, the durability of the leaf spring 70 can be further improved.

  Next, the operation | movement at the time of ignition operation of the thermal power control apparatus 20 is demonstrated. In order to ignite the burner, the user performs an ignition operation of rotating about 90 ° counterclockwise while pressing the knob 11. Along with the knob 11, the operation shaft 50 is also rotated about 90 ° counterclockwise. Then, the main valve 26 in the valve body 21 shown in FIG. 6 opens and closes the gas flow path to the discharge port 31. The safety valve 27 is pushed backward to open the gas flow path. Since the spindle 25 rotates together with the operation shaft 50, the discharge port 31 is opened and gas flows toward the gas flow path 32. The gas that has flowed from the gas flow path 32 to the gas flow path 33 flows through the gas flow paths 34 and 35, and from the gas discharge portion 37 to the mixing tube (not shown) provided in the burner body (not shown) of the right stove 5. The gas is discharged toward. The mixed gas produced by mixing the primary air in the mixing tube is ejected from a plurality of flame openings (not shown) formed between the burner body of the right stove 5 and the burner head (not shown).

  On the other hand, together with the operating shaft 50, the first spring locking member 51 also rotates about 90 ° counterclockwise while being pushed backward against the biasing force of the return spring 53. Then, as shown in FIG. 9, since the urging portion 51B of the first spring locking member 51 moves downward, the operation element 56 of the drive switch 55 also moves downward. The drive switch 55 is turned on, and the igniter provided on the right stove 5 is driven. The igniter ignites the gas ejected from the plurality of flame openings, thereby forming a flame at the plurality of flame openings of the right stove 5. The safety valve 27 in the valve body 21 is held in the open state by the thermoelectromotive force during burner combustion of the right stove 5.

  Further, as shown in FIG. 5, together with the operation shaft 50, the rotating plate 60 is rotated about 90 ° counterclockwise (P direction in FIG. 5) while being pushed backward against the biasing force of the return spring 53. Move. At this time, the rotation plate 60 rotates counterclockwise from a state where the rotation plate 60 is pushed from substantially the same position as the right front wall portion 43 of the support member 40 to the tip end position of the conical portion 78B of the pin 78. Therefore, as shown in FIG. 9, the tip end portion of the pin 78 can smoothly ride on the front surface from the concave portion 67 </ b> A of the one end portion 67 of the rotating plate 60.

  As the rotating plate 60 rotates counterclockwise, the tip of the pin 78 slides from the one end side toward the other end side of the front surface of the rotating plate 60. As described above, the rotating plate 60 rotates counterclockwise while being pushed backward, so that the leaf spring 70 is fixed to the fixed portion when the tip of the pin 78 is in contact with the front surface of the rotating plate 60. Starting from 71, the inclined portion 72 and the pin support portion 73 are only slightly bent in a direction away from the right front wall portion 43. Therefore, since the impact when the tip part of the pin 78 settles and engages with the engagement hole 66 is small, the user hardly feels the click feeling. Therefore, this embodiment can realize a natural pushing operation of the knob 11 during the ignition operation by the knob 11.

  After completion of ignition, the user releases his / her hand from the knob 11, so that the operating shaft 50 is urged forward by the return spring 53. Accordingly, as shown in FIG. 13, the rotating plate 60 also moves forward. However, since the tip end portion of the pin 78 contacts the front surface of the rotating plate 60, the leaf spring 70 is fixed to the screw 82 of the fixing portion 71. With the vicinity as a base point, the inclined portion 72 and the pin support portion 73 are bent so as to warp in a direction away from the front surface of the right front wall portion 43. The tip of the pin 78 is pressed against the front surface of the rotating plate 60 by the elastic restoring force generated in the leaf spring 70.

Next, the operation | movement at the time of the thermal power adjustment of the thermal power control apparatus 20 is demonstrated.
-From large thermal power to medium thermal power-
After completion of the ignition, the mutual positional relationship between the pin 78 and the rotating plate 60 is as shown in FIG. The burner after completion of ignition is adjusted to a large heating power. In order to adjust the heating power of the burner from a large heating power to a medium heating power, the user rotates the knob 11 clockwise. Then, as shown in FIG. 6, together with the knob 11, the operation shaft 50 and the spindle 25 rotate clockwise. Along with this, since the overlapping area of the discharge port 31 and the spindle 25 increases, the opening area of the discharge port 31 decreases. Therefore, since the amount of gas flowing toward the gas flow path 32 is reduced, the burner of the right stove 5 is adjusted to medium heating power.

  On the other hand, as shown in FIGS. 9, 10, and 13, together with the operation shaft 50, the rotation plate 60 also rotates clockwise (Q direction in the figure). Accordingly, the tip of the pin 78 slides in an arc shape from the other end 68 side toward the one end 67 side while being pressed against the front surface of the rotating plate 60. The mutual positional relationship between the pin 78 and the rotating plate 60 in the medium heating power is as shown in FIG.

-From medium heat to small heat-
In order to adjust the heating power of the burner from medium heating power to small heating power, the user further rotates the knob 11 clockwise. Accordingly, as shown in FIG. 6, since the overlapping area of the spindle 25 and the discharge port 31 is further reduced, the amount of gas flowing through the gas flow path 32 is further reduced, and the burner of the right stove 5 is adjusted to a small heating power. Is done.

  On the other hand, as shown in FIGS. 10 and 11, together with the operation shaft 50, the rotating plate 60 further rotates clockwise (Q direction in the figure). When the medium heating power is switched to the small heating power, the tip portion of the pin 78 that has been sliding on the front surface of the rotating plate 60 until then is firmly settled in the engagement hole 66 by the elastic return force of the leaf spring 70. (See FIGS. 11 and 14). A small impact received on the rotating plate 60 from the pin 78 at this time is given to the user's hand as a click feeling through the operation shaft 50 and the knob 11. By using this click feeling as a clue, the user can clearly recognize the position at which the medium heating power switches to the small heating power, so that the operability of the heating power adjustment can be improved. In addition, when cooking power such as boiled food is reduced from medium power to small heat power, it is possible to prevent the fire from being extinguished by excessively reducing the heat power.

-From small thermal power to fire extinguishing-
In order to extinguish the fire by further reducing the burner's heating power from the small heating power, the user further rotates the knob 11 clockwise from the position where the click feeling is generated. Accordingly, as shown in FIG. 6, since the overlapping area of the spindle 25 and the discharge port 31 is further reduced, the amount of gas flowing through the gas flow path 32 is further reduced, and the heating power of the burner of the right stove 5 is further weakened. Become.

  On the other hand, as shown in FIGS. 11 and 12, together with the operating shaft 50, the rotating plate 60 further rotates clockwise (Q direction in the figure). At this time, the tip of the pin 78 engaged with the engagement hole 66 is pulled out toward the one end 67 along the tapered surface of the inner edge of the engagement hole 66 and rides on the front surface of the rotating plate 60 again (FIG. 12). reference). At this time, the leaf spring 70 is bent again with the vicinity of the screw 82 of the fixing portion 71 as a base point so that the inclined portion 72 and the pin support portion 73 are warped away from the front surface of the right front wall portion 43. The tip of the pin 78 is pressed against the front surface of the rotating plate 60 by the elastic restoring force generated in the leaf spring 70.

  Then, by further rotating the knob 11 in the clockwise direction (Q direction in the figure), the discharge port 31 is closed by the spindle 25, and the tip of the pin 78 makes the front surface of the rotating plate 60 the recess of the one end 67. Deviates counterclockwise from 67A. At this time, since the urging force of the leaf spring 70 applied to the front surface of the rotating plate 60 disappears all at once, the rotating plate 60 and the operation shaft 50 are pushed forward by the return spring 53. The tip of the pin 78 is disengaged from the front surface of the rotating plate 60 and is disposed in the gap between the notch 43A of the right front wall 43 and the recess 67A of the one end 67 of the rotating plate 60. Since the spindle 25 also moves forward together with the operation shaft 50, the main valve 26 closes the gas flow path to the discharge port 31, and the safety valve 27 also moves forward to close the gas flow path. In this way, the right stove 5 is extinguished and the state returns to the state of FIG. In addition, when adjusting from a small thermal power to a large thermal power, since it becomes the reverse flow of the said operation | movement, description is abbreviate | omitted.

  Thus, the gas stove 1 of this embodiment can provide a click feeling to the knob 11 at a predetermined thermal power position where the medium thermal power is switched to the small thermal power when adjusting the thermal power of various burners. Thereby, the user can finely adjust the heating power of the burner with the click feeling as a clue, so that the operability of the thermal power adjustment can be improved. And since this embodiment is a simple structure only using the rotation board 60 and the leaf | plate spring 70 provided with the pin 78, it can be easily attached to the structure of the conventional gas stove. Furthermore, since the structure is simple, maintenance such as parts replacement and repair is easy, and the part cost can be kept low.

  With reference to FIGS. 13 to 15, the effect of tilting the axial direction of the pin 78 with respect to the front surface of the rotating plate 60 will be described. The leaf spring 170 shown in FIG. 15 is obtained by adjusting the axial direction of the pin 78 so as to be perpendicular to the front surface of the rotating plate 60. The rest of the structure is the same as that of the leaf spring 70 shown in FIG. When such a leaf spring 170 is used to bring the tip of the pin 78 into contact with the front surface of the rotating plate 60, the leaf spring 170 is based on the vicinity of the screw 82 of the fixing portion 71 as in the leaf spring 70. The inclined portion 72 and the pin support portion 73 are bent so as to warp in a direction away from the front surface of the right front wall portion 43. In this state, when the knob 11 is rotated clockwise (from a large heating power to a small heating power: Q direction in FIG. 15), and counterclockwise (from a small heating power to a large heating power: R direction in FIG. 15). In the case where the pin 78 is rotated, the difference in the strength of the click feeling that occurs when the pin 78 passes through the engagement hole 66 of the rotation plate 60 occurs.

  For example, as shown in FIG. 16, when the knob 11 is rotated clockwise from the state in which the tip end portion of the pin 78 is engaged with the engagement hole 66 of the rotation plate 60 (from large thermal power to small thermal power). The rotating plate 60 rotates in the Q direction in FIG. The tip end of the pin 78 is pulled in the opposite direction (S direction in FIG. 16) to the fixed portion 71 side by the inner edge portion of the engagement hole 66, so that the leaf spring 170 is pulled in the opposite direction to the fixed portion 71 side. It will be in the state to be. And since the inner edge part of the engagement hole 66 is a taper surface, the front-end | tip part of the pin 78 slips out smoothly to the one end part 67 side by sliding along the taper surface. At this time, since a large stress is not applied to the leaf spring 170, it can be said that the tip of the pin 78 is relatively easy to come out of the engagement hole 66. Therefore, the click feeling generated when the tip of the pin 78 passes through the engagement hole 66 is reduced.

  On the other hand, when the knob 11 is rotated counterclockwise from the state in which the tip end portion of the pin 78 is engaged with the engagement hole 66 of the rotating plate 60 (from small heating power to large heating power), the rotating plate 60 rotates in the R direction in FIG. The tip of the pin 78 is pushed toward the fixing portion 71 (T direction in FIG. 16) by the inner edge of the engagement hole 66, but the leaf spring 170 is inclined because the fixing portion 71 is fixed by a screw 82. The part 72 and the pin support part 73 are compressed between the pin 78 and the screw 82. In this case, since a large stress is applied to the leaf spring 170, it can be said that the pin 78 is relatively difficult to be removed from the engagement hole 66. Therefore, the click feeling generated when the tip of the pin 78 passes through the engagement hole 66 is increased. As described above, the ease of removal of the pin 78 from the engagement hole 66 differs depending on the rotation direction of the rotation plate 60, so that the click feeling generated when the tip of the pin 78 passes through the engagement hole 66. Make a difference.

  Therefore, the present embodiment has the following features in order to align the click feeling that occurs when the pin 78 passes through the engagement hole 66 regardless of the direction in which the rotation plate 60 is rotated. . As shown in FIG. 13, the tip of the pin 78 contacts the front surface of the rotating plate 60 at the contact point A shown in FIG. 13. The direction in which the rotating plate 60 at the contact A rotates counterclockwise together with the operation shaft 50 is the R direction shown in FIG. The R direction is substantially opposite to the direction from the fixed portion 71 fixed to the front surface of the right front wall portion 43 of the support member 40 of the leaf spring 70 toward the tip portion of the pin support portion 73.

  In such a configuration, the axial direction of the pin 78 is inclined to the side away from the fixed portion 71 with respect to the direction (K direction in FIG. 13) perpendicular to the front surface of the rotating plate 60 at the contact A. Accordingly, as shown in FIG. 14, the conical portion 78 </ b> B of the pin 78 with respect to the tapered surface on the one end 67 side of the engagement hole 66 in a state where the tip end portion of the pin 78 is engaged with the engagement hole 66. The tapered surfaces come to face each other. Thereby, when the knob 11 is rotated clockwise and the rotation plate 60 is rotated in the Q direction in FIG. 14, the tapered surface of the conical portion 78 </ b> B of the pin 78 is at one end 67 of the engagement hole 66. Since it is strongly hooked to the taper surface on the side, it can be made somewhat difficult to come out compared to the leaf spring 170.

  On the other hand, the tapered surface of the conical portion 78B of the pin 78 is arranged to be more inclined with respect to the tapered surface of the engagement hole 66 on the other end portion 68 side. Thereby, when the knob 11 is rotated counterclockwise and the rotating plate 60 is rotated in the R direction in FIG. 14, the tapered surface of the conical portion 78 </ b> B of the pin 78 is a corner on the front side of the engagement hole 66. Since it comes out to the other end portion 68 side so as to slide on the portion 66A, it can be slightly removed as compared with the leaf spring 170. Thereby, since the click feeling can be made uniform when the knob 11 is rotated from a large heating power to a small heating power and when the knob 11 is rotated from a small heating power to a large heating power, the knob 11 can be rotated more naturally. Can provide operation.

  As described above, the gas stove 1 of the present embodiment includes the thermal power adjusting device 20 that adjusts the thermal power of the burner of the right stove 5. The thermal power adjusting device 20 includes an operation shaft 50, a rotating plate 60, and a leaf spring 70. The operation shaft 50 is pivotally supported by the valve body 21 which is a main body portion of the thermal power adjusting device 20, and is rotated for adjusting the thermal power. The rotation plate 60 is provided integrally with the operation shaft 50 and rotates around the operation shaft 50. An engagement hole 66 is provided on the front surface of the rotating plate 60. The leaf spring 70 is fixed to the valve body 21 via the support member 40, and extends from the fixing portion 71 fixed to the front surface of the right front wall portion 43 of the support member 40 to the front surface side of the rotating plate 60. A pin 78 is provided at the tip of the leaf spring 70. The pin 78 is disposed on the rotation locus of the engagement hole 66 that rotates as the rotation plate 60 rotates. The leaf spring 70 urges the front end portion on which the pin 78 is provided to the front surface side of the rotating plate 60. When the rotation plate 60 is rotated to a position where the rotation plate 60 is switched to a predetermined heating power, the pin 78 is settled in the engagement hole 66 and engaged. An impact generated when the pin 78 is engaged with the engagement hole 66 is transmitted to the user's hand as a click feeling through the operation shaft 50. By using this click feeling as a clue, the user can use it as a guide for adjusting the thermal power, so that the operability of the thermal power adjustment can be improved. Further, since the rotation plate 60 is provided on the operation shaft 50 and the leaf spring 70 with the pin 78 fixed is simply attached, the attachment, parts replacement, repair, etc. are easy, and the parts cost is kept low. It is done.

  Further, the thermal power control apparatus 20 of the above embodiment performs an ignition operation of rotating the knob 11 provided on the operation shaft 50 in the counterclockwise direction while pushing the knob 11 in the axial direction of the operation shaft 50, thereby providing gas to the burner. A function to open the flow path is provided. The counterclockwise direction is a direction for adjusting the thermal power from a small thermal power to a large thermal power. The rotating plate 60 is formed in a substantially fan shape with the operation shaft 50 as the center. Further, before the ignition operation and at the time of extinguishing the burner, the pin 78 is disengaged from the one end 67 on the downstream side in the counterclockwise direction rotating together with the operation shaft 50 among the both ends in the outer peripheral direction of the rotating plate 60, And it arrange | positions with the clearance gap from the one end part 67 to one direction side. During the ignition operation, the pin 78 rides on the front surface from the one end portion 67 side and slides toward the other end portion 68 side on the upstream side opposite to the one end portion 67. As described above, before the ignition operation of the knob 11, the pin 78 provided at the distal end portion of the leaf spring 70 is separated from the rotating plate 60 and disposed with a gap. Thereby, it is possible to prevent the leaf spring 70 from being loaded before the ignition operation, so that the durability of the leaf spring 70 can be improved.

  Further, in the above embodiment, since play is provided in the rotation direction of the operation shaft 50 with respect to the operation shaft 50 before the ignition operation and during the fire extinguishing operation, the knob 11 is not pushed by an erroneous operation of the user before the ignition operation. When the rotary shaft 60 is rotated, the operating shaft 50 only rotates within the range of play. Therefore, even if the rotating plate 60 contacts the leaf spring 70, no load is applied to the leaf spring 70. Thereby, durability of the leaf | plate spring 70 can be improved.

  Moreover, the said embodiment is provided with the return spring 53 which urges | biases the operating shaft 50 on the opposite side to the direction which pushes the knob 11. FIG. Further, during the ignition operation, the rotating plate 60 rotates while being pushed together with the operation shaft 50. Thereby, when the knob 11 is pushed around during the ignition operation, the pin 78 moves in a direction away from the front surface of the rotary plate 60, so that the click feeling obtained when passing through the engagement hole 66 can be alleviated. Therefore, the user can operate the knob 11 without feeling uncomfortable during the ignition operation.

  In the above embodiment, the counterclockwise direction (R direction in FIG. 13) in which the rotating plate 60 rotates with the operation shaft 50 at the contact point where the tip of the pin 78 contacts the front surface of the rotating plate 60 is the plate The direction is substantially opposite to the direction from the fixed portion 71 fixed to the support member 40 of the spring 70 toward the tip portion. And the axial direction of the pin 78 inclines in the direction away from the fixed part 71 side with respect to the direction (K direction in FIG. 13) perpendicular to the front surface of the rotating plate 60 at the contact point with the tip of the pin 78. Yes. Thereby, it is possible to make it easy to remove the pin 78 from the engagement hole 66 when the rotating plate 60 rotates clockwise and counterclockwise together with the operation shaft 50. Therefore, it is possible to align the click feeling generated when the operation shaft 50 is rotated clockwise and counterclockwise.

  Moreover, in the said embodiment, the inner edge part of the engagement hole 66 provided in the rotation board 60 is formed in the taper shape. Thereby, the tip end portion of the pin 78 is smoothly engaged with and disengaged from the engagement hole 66, so that a smooth click feeling can be obtained.

  Further, in the above embodiment, a click feeling is given at a thermal power position between a medium thermal power and a small thermal power.For example, when a thermal power is reduced from a medium thermal power to a small thermal power in cooking, the thermal power is reduced. It can prevent the fire from extinguishing too much.

  In addition, this invention is not limited to the said embodiment, A various change is possible. In the above embodiment, the position of the engagement hole 66 of the rotating plate 60 is determined so that the click feeling is given at the heating power position between the medium heating power and the small heating power, but the clicking feeling is at other heating power positions. It may be given. For example, a click feeling may be given at a thermal power position between large thermal power and medium thermal power. Moreover, in the said embodiment, although the one engagement hole 66 is provided in the rotation board 60, you may make it provide a click feeling in a several thermal power position by providing two or more.

  In addition, the rotation plate 60 of the above embodiment is provided with the engagement hole 66 penetrating in the plate thickness direction, but it may not be penetrated, and it is formed in a concave shape recessed from the front side to the back side. It may be a groove. Further, instead of the engagement hole 66, a convex portion protruding to the front side may be provided. Even such a thing can provide a click feeling.

  Moreover, in the said embodiment, the rotation direction of the knob 11 at the time of ignition operation, the time of thermal power adjustment, etc. may be a reverse direction. For example, when the ignition operation is performed, the knob 11 may be pushed and rotated clockwise, and when adjusting from a large heating power to a small heating power, the knob 11 may be rotated counterclockwise.

  Further, the structure in the valve body 21 is not limited to the above embodiment. Further, the shape of the rotating plate 60 may be, for example, a circle or a substantially fan shape with an obtuse central angle other than the substantially fan shape as in the above embodiment.

  Further, in the above-described embodiment, the leaf spring 70 is disposed with respect to the rotating plate 60 so as to extend downward from the fixing portion 71 fixed with the screw 82. You may make it arrange | position in the horizontal direction or the diagonal direction in the contact which contacts the front surface of the rotation board 60. FIG.

  In the above embodiment, the return spring 53 is used as the biasing means for biasing the operation shaft 50 in the direction opposite to the direction in which the knob 11 is pushed. However, an elastic member other than the spring may be used. An elastic member such as a spring, rubber, or resin may be used. Further, the return spring 53 may not be attached to the operation shaft 50.

DESCRIPTION OF SYMBOLS 1 Gas stove 5 Right stove 11 Knob 20 Thermal power control device 21 Valve body 40 Support member 50 Operation shaft 53 Return spring 60 Rotating plate 66 Engagement hole 67 One end portion 68 Other end portion 70 Plate spring 71 Fixing portion 78 Pin A Contact

Claims (7)

In a gas stove equipped with a thermal power control device that controls the thermal power of the burner,
The thermal power control device
The main body,
An operation shaft that is pivotally supported by the main body and is rotated for adjusting the heating power,
A rotating plate provided integrally with the operating shaft and rotating around the operating shaft;
A groove or a hole provided on one side of the rotating plate;
A leaf spring fixed to the main body portion and extending from the fixed portion fixed to the main body portion to the one side of the rotating plate;
It is provided at the tip of the leaf spring and is arranged on a turning locus of the groove or the hole that rotates as the rotating plate rotates, and the rotating plate rotates to a predetermined thermal power position. A pin that is engageable with the groove or the hole when moved.
The gas stove, wherein the leaf spring urges the tip portion provided with the pin to the one surface side of the rotating plate. The thermal power control device
By pressing the knob provided on the operation shaft in the axial direction of the operation shaft, by performing an ignition operation that rotates in one direction, which is a direction when adjusting the heating power from a small heating power to a large heating power, With the function to open the gas flow path,
The rotating plate is formed in a substantially fan shape centered on the operation shaft,
Before the ignition operation and when the burner is extinguished, the pin is disengaged from one end on the downstream side in the one direction rotating with the operation shaft among both ends in the outer peripheral direction of the rotating plate, and It is arranged with a gap from the one end on the downstream side to the one direction side,
During the ignition operation, the pin rides on the one surface from the downstream end portion of the rotating plate that rotates in the one direction, and the other upstream side opposite to the downstream end portion. The gas stove according to claim 1, wherein the gas stove slides toward the end side. The gas stove according to claim 2, wherein play is provided in a rotation direction of the operation shaft with respect to the operation shaft before ignition operation and at the time of fire extinguishing. Urging means for urging the operating shaft on the opposite side to the direction in which the knob is pushed in;
4. The gas stove according to claim 2, wherein during the ignition operation, the rotating plate rotates while being pushed together with the operation shaft. The one direction in which the rotating plate rotates together with the operation shaft at a contact point where the tip end portion of the pin contacts the one surface of the rotating plate is from the fixed portion fixed to the main body portion of the plate spring. A direction substantially opposite to the direction toward the tip,
The axial direction of the pin is inclined in a direction away from the fixed portion side with respect to a direction perpendicular to the one surface of the rotating plate at the contact point. The gas stove according to one.   The gas stove according to any one of claims 1 to 5, wherein an inner edge portion of the groove portion or the hole portion is formed in a tapered shape. The gas stove according to any one of claims 1 to 6, wherein the predetermined thermal power position is a thermal power position between a medium thermal power and a small thermal power.

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