Gas cooking stove

Abstract

To provide a technique capable of easily fitting a fixation part to the inside of a body part and facilitating stable maintenance of a fitting state in an operation button of a gas cooking stove.SOLUTION: A gas cooking stove 1 includes: a panel part 70B having a through hole 102 and constituting a part of a front surface of the gas cooking stove 1; and an operation button 6B that is inserted into the through hole 102 and is movable in the forward / backward direction and rotatable. The operation button 6B includes a body part 120 and a fixation part 150. The fixation part 150 is fixed to the body part 120 so that a claw part 138 is hooked on an engaged part 162 in the state where a regulation part 160 regulates a situation where a plate-like part 152 comes close to a front surface part 122 while the front surface part 122 of the body part 120 and the plate-like part 152 of the fixation part 150 are overlapped in the forward / backward direction and in the state where a projecting part 130 enters a fitting part 164.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present disclosure relates to gas stoves. [Background technology]

[0002] Patent Document 1 discloses an operating knob for a gas stove. The operating knob disclosed in Patent Document 1 is an operating part used to ignite and extinguish a burner. The main body of this operating knob has a circular front surface when viewed from the front and a cylindrical outer periphery extending rearward from the periphery of the front surface. The main body is made of a translucent synthetic resin. A metal film portion is provided on a first back surface portion, which is the back surface of the front surface. A metal film portion is provided on a second back surface portion, which is the inner circumferential surface of the outer periphery. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-150241 Summary of the Invention [Problem to be solved by the invention]

[0004] The operation knob disclosed in Patent Document 1 is configured such that a cylindrical fixing portion 139 is inserted into the inside of a cylindrical main body 131, and a hook piece 139B formed on a side surface 139A of the fixing portion 139 engages with the inside of the main body 131, thereby fixing the fixing portion 139 to the main body 131. Such a configuration in which a cylindrical member is fitted into the inner periphery of another cylindrical member for fixing is inevitably subject to disadvantages resulting from fitting two cylindrical members together for fixing. For example, if a misalignment occurs in the shape of the inner periphery of the main body 131 or the outer periphery of the fixing portion 139 for some reason (such as deformation due to manufacturing errors or other causes), it may become difficult to insert the fixing portion 139 into the main body 131, or the connection between the main body 131 and the fixing portion 139 may become insufficient, making the fixing portion 139 more likely to come off the main body 131.

[0005] One of the objects of the present disclosure is to provide a technology for easily attaching a fixing part to the inside of a main body of an operating button for a gas stove, and for easily maintaining the attached state stably. [Means for solving the problem]

[0006] The gas stove that is one of the disclosures is A gas stove comprising: a gas burner; an operated device having a shaft member, the shaft member being rotatable and movable back and forth; and a housing that accommodates the operated device and at least a part of the gas burner; A panel portion having a through hole and constituting a part of the front surface of the gas stove; an operation button inserted into the through hole and movable back and forth and rotatable; Equipped with the operation button has a main body portion integrally formed with a plate-like front surface portion and a tubular portion extending rearward from the front surface portion, and a fixing portion fixed to the main body portion, the main body portion includes an engaging portion that protrudes rearward from the rear surface of the front surface portion on an inner side away from the cylindrical portion and has a claw portion provided at a tip side thereof, and a protruding portion that protrudes rearward from the rear surface of the front surface portion on an inner side away from the cylindrical portion, the fixing portion includes a plate-shaped portion that is configured in a plate shape and is arranged to overlap the front portion, and an attachment shaft portion that protrudes rearward from the plate-shaped portion and is attached to the shaft member, The plate-shaped portion is provided with a restricting portion that protrudes forward from the front surface side of the plate-shaped portion, an engaged portion that is a portion on which the claw portion is hooked, and a recessed or hole-shaped fitting portion that is a portion into which the protruding portion is inserted and through which the protruding portion passes rearward from the plate-shaped portion, The fixing portion is fixed to the main body portion so that the claw portion catches on the engaged portion when the front portion and the plate-shaped portion overlap each other from front to back and the regulating portion regulates the plate-shaped portion from approaching the front portion, and when the protruding portion is inserted into the mating portion. [Effects of the Invention]

[0007] According to the technology disclosed herein, the fixing part of the gas stove operation button can be easily attached to the inside of the main body, and the attached state can be easily maintained stably. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view schematically illustrating a gas stove according to a first embodiment. [Figure 2] FIG. 2 is a front view of the gas stove of FIG. [Figure 3] FIG. 3 is an explanatory diagram schematically showing a gas supply structure to each gas burner in the gas stove of FIG. [Figure 4] FIG. 4 is a block diagram illustrating an example of the electrical configuration of the gas stove of FIG. [Figure 5] FIG. 5 is a perspective view schematically illustrating the structure of the gas stove of FIG. 1 cut along a plane perpendicular to the left-right direction at the position of the operation button. [Figure 6] FIG. 6 is a perspective view illustrating a front unit that forms a part of the gas stove of FIG. [Figure 7] FIG. 7 is a perspective view of the front unit of FIG. 6 as seen obliquely from the rear side. [Figure 8] Figure 8(A) is a perspective view illustrating the configuration of the operation button provided on the gas stove of Figure 1, as viewed from the diagonal front side, and Figure 8(B) is a perspective view illustrating the configuration of the operation button, as viewed from the diagonal rear side. [Figure 9] 9(A) is a front view of the operation button of FIG. 8, and FIG. 9(B) is a rear view of the operation button of FIG. [Figure 10] FIG. 10 is a perspective view of the operation button of FIG. 8, seen from a different direction than that of FIG. [Figure 11] FIG. 11 is an exploded perspective view of the operation button of FIG. 8, disassembled into a main body and a fixed part. [Figure 12] 12(A) is a rear view of a main body portion constituting the operation button of FIG. 8, and FIG. 12(B) is a rear view of a fixing portion constituting the operation button of FIG. 8; [Figure 13]Figure 13(A) is a cross-sectional view that schematically illustrates a cut surface of the operation button of Figure 8 cut along the front-to-back direction at the positions of both engagement portions, and Figure 13(B) is a cross-sectional view that schematically illustrates a cut surface of the operation button of Figure 8 cut along the front-to-back direction at the positions of both protrusions. [Figure 14] FIG. 14 is a perspective view that schematically illustrates the structure of the operation button of FIG. 8, cut along the front-rear direction at the positions of both engagement portions. [Figure 15] FIG. 15 is a perspective view schematically illustrating the structure of the operation button of FIG. 8 cut along the front-rear direction at the positions of both protrusions. [Figure 16] FIG. 16 is a perspective view that schematically illustrates the structure of the operation button of FIG. 8, cut along the front-rear direction at the positions of both engagement protrusions. DETAILED DESCRIPTION OF THE INVENTION

[0009] Each of the following [1] to [4] is an example of a characteristic technique included in the present disclosure.

[0010] [1] A gas stove having a gas burner, an operated device having a shaft member and configured so that the shaft member can rotate and move back and forth, and a housing that accommodates the operated device and at least a part of the gas burner, A panel portion having a through hole and constituting a part of the front surface of the gas stove; an operation button inserted into the through hole and movable back and forth and rotatable; Equipped with the operation button has a main body portion integrally formed with a plate-like front surface portion and a tubular portion extending rearward from the front surface portion, and a fixing portion fixed to the main body portion, the main body portion includes an engaging portion that protrudes rearward from the rear surface of the front surface portion on an inner side away from the cylindrical portion and has a claw portion provided at a tip side thereof, and a protruding portion that protrudes rearward from the rear surface of the front surface portion on an inner side away from the cylindrical portion, the fixing portion includes a plate-shaped portion that is configured in a plate shape and is arranged to overlap the front portion, and an attachment shaft portion that protrudes rearward from the plate-shaped portion and is attached to the shaft member, The plate-shaped portion is provided with a restricting portion that protrudes forward from the front surface side of the plate-shaped portion, an engaged portion that is a portion on which the claw portion is hooked, and a recessed or hole-shaped fitting portion that is a portion into which the protruding portion is inserted and through which the protruding portion passes rearward from the plate-shaped portion, The fixing portion is fixed to the main body portion such that the claw portion is caught on the engaged portion in a state in which the front surface portion and the plate-like portion overlap each other in the front-rear direction and the restricting portion restricts the plate-like portion from approaching the front surface portion, and in a state in which the protruding portion is inserted into the fitting portion. Gas stove.

[0011] In the gas stove described above in [1], the fixing part is fixed to the main body part so that, with the front part of the main body part and the plate-shaped part of the fixing part overlapping each other, the protruding part protruding rearward from the rear surface of the front part fits into the fitting part of the plate-shaped part, and the engaging part protruding rearward from the rear surface of the front part hooks onto the engaged part of the plate-shaped part. This fixing structure allows the protruding part extending away from the cylindrical part to fit into the fitting part of the plate-shaped part, and the claw part of the engaging part away from the cylindrical part to hook onto the engaged part of the plate-shaped part, so that the fixing part can be easily and stably fixed to the main body part in a manner that is not affected by the shape of the cylindrical part. Therefore, the fixing part is easily attached to the inside of the main body part, and the attached state is easily maintained.

[0012] [2] The front surface is configured in a disk shape, The tubular portion is configured in a cylindrical shape, The plate-shaped portion is configured in a disk shape, the fitting portion is a hole portion, the engaging portion has an extension portion that extends rearward from the rear surface of the front surface portion on an inner side away from the cylindrical portion, and the claw portion is provided on a tip side of the extension portion, the engaged portion is a recessed portion that is recessed toward the center of the plate-shaped portion at an outer edge of the plate-shaped portion, The front surface portion is provided with a pair of the engaging portions on both sides of a first center portion that is a center portion of the front surface portion, In the plate-shaped portion, a pair of the recesses is provided on both sides of a second center portion which is a center portion of the plate-shaped portion, a plurality of the protrusions are provided around the first center portion on the front surface portion at positions separated from the engagement portion; a plurality of the holes are provided around the second center portion of the plate-shaped portion at positions away from the recess; The rear surface of the front surface portion and the tip end of the restricting portion are configured to be in contact with each other, and the rear surface of the front surface portion and the front plate surface of the plate-like portion are configured to face each other, so that the front surface portion and the plate-like portion are in an overlapping state where they are overlapped from front to back, and in the overlapping state, the protruding portion is inserted into the hole portion, the extending portion is configured to fit into the recess, and the claw portion is configured to hook onto the edge of the recess, so that the fixing portion is fixed to the main body portion. The gas stove described in [1].

[0013] In the gas stove described in [2] above, the disk-shaped front portion and the disk-shaped plate portion are stacked inside the cylindrical tubular portion, and the fixing portion is fixed to the main body portion by a configuration in which the extension portions fit into a pair of recesses on the outer edge of the disk-shaped plate portion and the claws hook into them. This configuration in which the extension portions fit into the recesses and are stably positioned, and then the claws hook into the recesses, allows for more stable installation of the disk-shaped plate portion inside the cylindrical main body portion. Furthermore, since such a hooking structure is provided on both sides of the disk-shaped plate portion, installation of the plate portion is even more stable. Furthermore, since this gas stove is fixed to the main body portion by inserting the protrusions into the holes and inserting the extensions into the recesses, it is possible to increase adhesion at many positions around the circumference and stably restrict relative movement of the plate portion relative to the front portion.

[0014] [3] In the front surface portion, a pair of the engaging portions is provided on both sides of a first center portion, which is the center portion of the front surface portion, a pair of the protruding portions are provided on the front surface portion at positions separated from the pair of engaging portions and on both sides of the first center portion, The pair of engaging portions face each other in a first direction perpendicular to the front-rear direction and are disposed on both sides of the mounting shaft portion in the first direction, The pair of protrusions face each other in a second direction perpendicular to the front-rear direction and the first direction, and are disposed on both sides of the mounting shaft in the second direction, Each of the claws protrudes toward the center of the cylindrical portion. A gas stove according to [1] or [2].

[0015] In the gas stove described in [3] above, the pair of engaging portions and the pair of protruding portions are arranged in a circumferentially balanced manner on the main body, which allows for a more stable installation. Furthermore, the opposing directions of the pair of engaging portions and the pair of protruding portions are perpendicular to each other, and each of the claw portions protrudes toward the center of the cylindrical portion, so the claw portions are less likely to interfere with the protruding portions or the cylindrical portion.

[0016] [4] The fitting portion is a hole portion, The protruding portion has a first plate portion configured in a plate shape and protruding from the rear surface of the front surface portion, and a second plate portion configured in a plate shape and protruding from the rear surface of the front surface portion and protruding from a first plate surface of the first plate portion in a radial direction of the front surface portion, and the second plate surface of the first plate portion and an edge portion of the second plate portion opposite to the first plate portion are adjacent to an inner periphery of the hole portion. A gas stove according to [1] or [2].

[0017] The gas stove of [4] above is configured so that the protrusion is inserted into the hole so that the plate surface (second plate surface) of the first plate portion provided on the protrusion and the edge portion of the second plate portion opposite the first plate portion are adjacent to the inner periphery of the hole, thereby increasing the adhesion between the inner periphery of the hole and the protrusion and making it easier to suppress rattling of the fixed portion.

[0018] First Embodiment The following description relates to the first embodiment. 1. Overview of Gas Stove 1 The gas stove 1 shown in FIGS. 1 and 2 is configured as a built-in stove capable of heating cooking utensils such as cooking pots. The gas stove 1 has an outer shell (case body) formed by a stove main body 1A, and various components such as a gas burner are housed inside the stove main body 1A. The stove main body 1A includes a box-shaped housing 2, a top plate 3 fixed to the upper end of the housing 2, and panel units 70A and 70B (upper panel units) and panel units 80A and 80B (lower panel units) fixed to the front end side of the housing 2. The housing 2 is configured to house at least a portion of the operated device 190 and gas burners 51, 52, 53, and 54, which will be described later.

[0019] In this specification, in gas stove 1, the thickness direction of top plate 3 is the up-down direction, the direction parallel to the rotation axes of operation buttons (rotation operation units) 6A, 6B, 6C, and 6D is the front-rear direction, and the direction perpendicular to the up-down direction and the front-rear direction is the left-right direction. In Figure 2, the left-right direction is the left-right direction of gas stove 1, and the up-down direction is the up-down direction of gas stove 1.

[0020] Gas stove 1 has right burner section 4A, left burner section 4B, and rear burner section 4C, each of which is exposed from top plate 3 that forms the upper surface of stove body 1A. A grill 5 is provided near the center of the interior of stove body 1A below top plate 3 and can be opened and closed by grill door 5B. Gas burners 51, 52, 53, and 54, shown in Figure 3, are provided in right burner section 4A, left burner section 4B, rear burner section 4C, and grill 5. Branch supply paths 61, 62, 63, and 64 are connected to gas burners 51, 52, 53, and 54, respectively, and these branch supply paths 61, 62, 63, and 64 branch off from common supply path 60. The common supply path 60 is provided with a main solenoid valve N1 that opens and closes the common supply path 60, and each branch supply path 61, 62, 63 is provided with solenoid valves (safety valves) 51G, 52G, 53G that can open and close each branch supply path 61, 62, 63, shut-off valves 51F, 52F, 53F, and heat adjustment valves 51E, 52E, 53E, respectively.

[0021] The safety valve 51G, the shut-off valve 51F, and the heat power adjustment valve 51E are driven by a stepping motor M1 (FIG. 4), the safety valve 52G, the shut-off valve 52F, and the heat power adjustment valve 52E are driven by a stepping motor M2 (FIG. 4), and the safety valve 53G, the shut-off valve 53F, and the heat power adjustment valve 53E are driven by a stepping motor M3 (FIG. 4). The gas burner 54 (grill burner) of the grill 5 comprises an upper burner 54A arranged on the upper side within the grill 5 and a lower burner 54B arranged on the lower side, and a branch supply path 64 that branches off from the common supply path 60 and leads gas to the gas burner 54 branches off into a first supply path 65A that leads gas to the upper burner 54A and a second supply path 65B that leads gas to the lower burner 54B, and the gas supply is controlled by solenoid valve 54G, shut-off valve 54F, and solenoid valves 54H, 54J, and 54K.

[0022] 1 and 2, four operation buttons (rotary operation units) 6A, 6B, 6C, and 6D for igniting, extinguishing, and adjusting the flame power are provided corresponding to right burner unit 4A, left burner unit 4B, rear burner unit 4C, and grill 5, respectively. As shown in Fig. 4, switches 30A, 30B, 30C, and 30D are provided corresponding to operation buttons (rotary operation units) 6A, 6B, 6C, and 6D, respectively, and ignition signal input circuits 40A, 40B, 40C, and 40D are provided corresponding to switches 30A, 30B, 30C, and 30D, respectively. Furthermore, displacement detection units 32A, 32B, 32C, and 32D are provided corresponding to operation buttons (rotary operation units) 6A, 6B, 6C, and 6D, respectively, and fire power signal input circuits 42A, 42B, 42C, and 42D are provided corresponding to displacement detection units 32A, 32B, 32C, and 32D, respectively. Furthermore, igniters 26A, 26B, 26C, and 26D are provided adjacent to gas burners 51, 52, 53, and 54, respectively, and igniter circuits 46A, 46B, 46C, and 46D are provided corresponding to igniters 26A, 26B, 26C, and 26D, respectively.

[0023] The control circuit 10 is configured as, for example, a microcomputer and includes a CPU 10A, a ROM 10B, a RAM 10C, etc. The control circuit 10 can control the above-mentioned solenoid valves, igniters 26A, 26B, 26C, 26D, motors M1, M2, M3, M4, non-volatile memory 16, etc. The operation unit 18 is configured with a known input interface such as an operation button or a touch panel. The power supply circuit 48 receives power from batteries 49 (for example, two dry batteries) housed in a battery box and generates a predetermined power supply voltage.

[0024] 2. Operation buttons 6A, 6B, 6C, 6D and their surrounding structure The following description relates to the structure of operation buttons 6A, 6B, 6C, and 6D. Operation buttons 6A, 6B, 6C, and 6D are inserted into through-holes 101, 102, 103, and 104, respectively, provided in panel portions 70A and 70B that form part of the front surface of gas stove 1, and are movably and rotatably moved back and forth. An operated device is provided inside housing 2 corresponding to each of operation buttons 6A, 6B, 6C, and 6D, and operation buttons 6A, 6B, 6C, and 6D are fixed to shaft members provided on each operated device. Operation buttons 6A, 6B, 6C, and 6D have similar structures. The detailed structure of operation button 6B will be described below as a representative example.

[0025] As shown in FIGS. 5 to 7, the gas stove 1 is provided with a front component 180 that is fixed to the front portion of the housing 2. The front end of the housing 2 is configured as an open frame, and the front component 180 is attached to the front of the housing 2 by being inserted into the opening at the front end. As shown in FIG. 7, the front component 180 has an upper portion 180A that holds the upper panel portion 70B, and a lower portion 180B that holds the lower panel portion 80B. The upper portion 180A and the lower portion 180B are integrally formed from, for example, a resin material. The upper portion 180A includes a plate-shaped portion and a protruding portion that protrudes rearward from the plate-shaped portion, and a hole 182 (described below) is provided that penetrates the plate-shaped portion and the protruding portion.

[0026] 6, panel portions 70B, 80B are attached to front-side component 180 from the front side so as to cover the front surface of front-side component 180. Front-side unit 188 is configured by integrally assembling panel portions 70B, 80B and front-side component 180, and this front-side unit 188 is assembled to housing 2 from the front side.

[0027] The panel portion 70B is formed in a plate shape and forms part of the front surface of the gas stove 1 as shown in FIG. 1. The panel portion 70B is formed as a decorative panel to decorate part of the front surface of the gas stove 1. As shown in FIG. 1, the front surface (front plate surface) of the panel portion 70B is exposed to the space outside the gas stove 1 and faces forward. In the configurations of FIGS. 1 and 6, most of the front surface of the panel portion 70B is formed as a flat surface, and this flat surface is arranged perpendicular or approximately perpendicular to the front-to-rear direction. The panel portion 70B is attached to the upper portion 180A as shown in FIG. 7 and is configured to cover the front surface of the upper portion 180A.

[0028] The panel portion 70B is provided with a through-hole 102 that penetrates through the thickness direction (front-rear direction) of the plate-shaped panel portion 70B. Furthermore, a hole portion 182 is provided in the upper portion 180A of the front component portion 180 at a position rearward of the through-hole 102, and the through-hole 102 and the hole portion 182 are adjacent to each other in the front-rear direction and communicate with each other. As shown in FIGS. 5 to 7, the operation button 6B is held by the operated device 190 in a configuration in which it is inserted into the through-hole 102 and the hole portion 182, and is movable back and forth and rotatable.

[0029] As shown in FIG. 5, an operated device 190 is provided behind the operation button 6B. The operated device 190 is housed inside the housing 2 and operates in response to an operation from the operation button 6B. In the gas stove 1 of this embodiment, the operated device 190 is configured as, for example, a known ignition / fuel adjustment device. In the example of FIG. 5, the operated device 190 is a device that performs an ignition operation in response to a first predetermined operation (specifically, a rearward pressing operation) from the operation button 6B, and a device that increases or decreases the fuel supply in response to a rotation operation from the operation button 6B. For example, when the operation button 6B is pressed from the front while the stove unit 4B is in an extinguished state, and the operation button 6B and the shaft member 192 move rearward, the operated device 190 functions to perform an ignition operation for the stove unit 4B. Furthermore, when the stove unit 4B is in a combustion state, if the operation button 6B is pressed from the front and the operation button 6B and the shaft member 192 move backward, the operated device 190 functions to perform a fire extinguishing operation on the stove unit 4B. Furthermore, when the stove unit 4B is in a combustion state, if the operation button 6B is rotated in a first direction and the operation button 6B and the shaft member 192 rotate in the first direction, the operated device 190 functions to increase the amount of fuel supplied to the stove unit 4B, and if the operation button 6B is rotated in a second direction and the operation button 6B and the shaft member 192 rotate in the second direction, the operated device 190 functions to decrease the amount of fuel supplied to the stove unit 4B.

[0030] The operated device 190 has a shaft member 192 and a device main body 194 that holds the shaft member 192. The shaft member 192 is held by the device main body 194 so as to be rotatable and movable back and forth. In the example of FIG. 5, the shaft member 192 is partially or entirely rod-shaped (specifically, hollow shaft-shaped) and extends in the front-rear direction behind the operation button 6B. A portion of the shaft member 192 is fixed to a mounting shaft portion 154 (described later) of the operation button 6B near its tip, and the operation button 6B is disposed in front of the shaft member 192, so that the shaft member 192 and the operation button 6B are rotatable and movable back and forth together.

[0031] In a typical example, the operated device 190 is configured as the above-mentioned ignition / fuel adjustment device, but it may also be a device having other functions or configurations as long as it is configured to receive pressing or rotating operations from the operation button 6B and performs operations in response to operations from the operation button 6B.

[0032] The operation button 6B shown in FIGS. 5 to 7 is a part that receives an external operation, and is a button that presses an axis member 192 (FIG. 5) in response to a pressing operation received from the outside, and rotates the axis member 192 in response to a rotation operation received from the outside. The operation button 6B has an appearance as shown in FIGS. 8 to 10. FIG. 11 shows a structure in which the main body part 120 and the fixed part 150 are separated. As shown in FIGS. 8(B), 9(B), and 10, the operation button 6B includes the main body part 120 and the fixed part 150, and is configured such that the fixed part 150 is attached to the main body part 120.

[0033] 11, 12(A), 13, and 14, the main body 120 includes a plate-like front surface 122 and a cylindrical portion 124 extending rearward from the front surface 122, with the front surface 122 and the cylindrical portion 124 being integrally formed. The main body 120 has a cylindrical shape with a bottom. Specifically, the front end of the cylindrical portion 124 is closed by the front surface 122, and the rear end of the cylindrical portion 124 is open, forming a cylindrical shape.

[0034] As shown in FIG. 11 , the front surface portion 122 is configured in a disk shape centered on the rotation axis (imaginary central axis) of the operation button 6B. The front surface of the front surface portion 122 is the surface exposed to the outside of the gas stove 1 and is the pressing surface that receives pressing operations from the outside. Most or all of the area of ​​the front surface of the front surface portion 122 is configured as a flat surface perpendicular to the front-to-rear direction. The tubular portion 124 is configured in a cylindrical shape centered on the rotation axis of the operation button 6B, and is connected to the outer edge of the front surface portion 122, extending cylindrically rearward from the outer edge. Most or all of the inner circumferential surface of the tubular portion 124 is configured as a cylindrical surface centered on the rotation axis of the operation button 6B.

[0035] 11, 12(A), 13, and 14, the main body 120 includes a plurality of engaging portions 134 and a plurality of protruding portions 130. In the representative example shown in Fig. 11 etc., the main body 120 is a resin molded product, and the front surface portion 122, the cylindrical portion 124, the plurality of engaging portions 134, and the plurality of protruding portions 130 are integrally formed from a resin material.

[0036] In the example of FIG. 11, a pair of engagement portions 134 are provided on both sides of a first center portion P1, which is the center of the front surface portion 122. The first center portion P1 is a portion of the front surface portion 122 that intersects with the rotation axis of the operation button 6B. As shown in FIGS. 13(A) and 14, each engagement portion 134 is configured to protrude rearward from the back surface of the front surface portion 122 on the inside, away from the inner circumferential surface of the cylindrical portion 124. As shown in FIG. 14, each engagement portion 134 includes an extension portion 136 and a claw portion 138. The engagement portion 134 is configured to protrude in a cantilevered manner, and the claw portion 138 is provided on the tip side.

[0037] The extension portion 136 of each engagement portion 134 is a portion that extends rearward from the back surface of the front surface portion 122 on the inside away from the cylindrical portion 124. The extension portion 136 is elastically deformable and flexibly deformable, with the front end (base end) of the extension portion 136 connected to the back surface of the front surface portion 122 and the rear end of the extension portion 136 connected to the claw portion 138. Specifically, the extension portion 136 is configured in a plate shape with its thickness direction set in a predetermined direction perpendicular to the direction of the rotation axis of the operation button 6B (front-rear direction), and extends rearward in a thin plate-like configuration. In its natural state (a state maintained when no external pressing force is applied), each extension portion 136 extends along the front-rear direction so as to be parallel or approximately parallel to the rotation axis, as shown in FIGS. 13(A) and 14 . The extensions 136 are configured to be able to flexibly deform from this natural state so that the tip side approaches the rotation axis, or so that the tip side moves away from the rotation axis. When a pressing force is applied, each extension 136 elastically deforms so that the tip side moves closer to or farther away from the rotation axis than in the natural state, and returns to the natural state when the pressing force is released.

[0038] The claw portion 138 of each engaging portion 134 is a portion that is provided integrally with the extending portion 136 on the tip side of the extending portion 136, and is a portion that protrudes toward the center side (the rotation shaft side) from the extending portion 136. Specifically, as shown in Figures 13(A) and 14, it is structured so that it protrudes toward the center side (the rotation shaft side) from the plate surface of the plate-shaped extending portion 136 on the center side (the rotation shaft side).

[0039] As shown in Figures 13(A) and 14, the pair of engagement portions 134 face each other in a predetermined first direction perpendicular to the front-rear direction, and are disposed on both sides of the mounting shaft 154 in the first direction. Figure 13(A) shows a cross-sectional configuration taken along a cut surface parallel to the first direction and passing through the rotation axis of the operation button 6B. Each of the claw portions 138 protrudes toward the center of the tubular portion 124 (the mounting shaft 154 side). Specifically, one side of the pair of claw portions 138 protrudes toward the other side, and the other side protrudes toward the one side.

[0040] 11, a plurality of protrusions 130 are provided around the center (first center P1) of the front surface portion 122 at positions spaced apart from the engaging portions 134. Specifically, a pair of protrusions 130 is provided on the front surface portion 122 at positions spaced apart from the pair of engaging portions 134 and on both sides of the first center P1. Each protrusion 130 is configured to protrude in a cantilevered manner from the back surface of the front surface portion 122 toward the rear, on the inside away from the inner circumferential surface of the tubular portion 124.

[0041] 11, the protruding portion 130 has a first plate portion 131 configured in a plate shape and protruding from the back surface of the front surface portion 122, and a second plate portion 132 configured in a plate shape and protruding from the back surface of the front surface portion 122 and protruding in the radial direction of the front surface portion 122 from a first plate surface 131A of the first plate portion 131. The shape of a cross section of the protruding portion 130 perpendicular to the front-to-rear direction at a midpoint in the front-to-rear direction is shaped like the letter "T."

[0042] The pair of protrusions 130 face each other in the front-rear direction and in a second direction perpendicular to the first direction, and are disposed on both sides of the mounting shaft 154 in the second direction. Fig. 13(B) shows a cross-sectional configuration taken along a plane passing through the rotation axis of the operation button 6B and parallel to the second direction. As shown in Figs. 12(A) and 13(B), the first plate 131 has plate surfaces (first plate surface 131A, second plate surface 131B) parallel to the rotation axis of the operation button 6B, and is shaped like a thin plate extending in the direction of the rotation axis.

[0043] The first plate portions 131, 131 of the pair of protrusions 130 are provided in a pair, with the second plate surface 131B of one protrusion 130 facing the rotation axis and the other protrusion 130, and the second plate surface 131B of the other protrusion 130 facing the rotation axis and the one protrusion 130. The second plate surfaces 131B, 131B of the first plate portions 131, 131 are parallel to each other or approximately parallel to each other. The first plate surface 131A of one protrusion 130 faces the opposite side of the rotation axis and the opposite side of the other protrusion 130, and the first plate surface 131A of the other protrusion 130 faces the opposite side of the rotation axis and the opposite side of the one protrusion 130. The first plate surfaces 131A, 131A of the first plate portions 131, 131 are parallel to each other or approximately parallel to each other.

[0044] The second plate portions 132, 132 of the pair of protruding portions 130 are provided as a pair and protrude along the second direction. Both second plate portions 132, 132 are formed as thin plates extending in the direction of the rotation axis. The second plate portion 132 of one protruding portion 130 is provided to protrude from the first plate surface 131A of the first plate portion 131 of the one protruding portion 130 on the side opposite the rotation axis and opposite the other protruding portion 130. The second plate portion 132 of the other protruding portion 130 is provided to protrude from the first plate surface 131A of the first plate portion 131 of the other protruding portion 130 on the side opposite the rotation axis and opposite the one protruding portion 130.

[0045] 11, 12(B), 13, and 14, the fixing portion 150 is a member fixed to the main body portion 120. As shown in FIG. 11, the fixing portion 150 includes a plate-shaped portion 152 and an attachment shaft portion 154. As shown in FIGS. 13 and 14, the plate-shaped portion 152 is configured in a plate shape and is a portion that is disposed so as to overlap the front surface portion 122. In the example of FIG. 11, the plate-shaped portion 152 is configured in a disk shape. As shown in FIGS. 14 to 16, the plate-shaped portion 152 is provided with an engaged portion 162 (FIG. 14), a fitting portion 164 (FIG. 15), and a restricting portion 160 (FIG. 16).

[0046] 13 and 16 is a portion that protrudes forward from the front surface of the plate-shaped portion 152. In the example of FIGS. 13 and 16, a plurality of the restriction portions 160 protrude from a plurality of positions on the front surface of the plate-shaped portion 152, and the tip of each restriction portion 160 is configured to come into contact with the back surface of the front surface portion 122.

[0047] The engaged portions 162 shown in FIGS. 11 and 14 are portions of the plate-shaped portion 152 on which the claw portions 138 are hooked. In the example of FIG. 11, each engaged portion 162 is a recessed portion configured to be recessed toward the center side of the plate-shaped portion 152 (the rotation axis side of the operation button 6B) at the outer edge (outer periphery) of the disk-shaped plate-shaped portion 152. In the example of FIG. 11, a pair of engaged portions 162 (recessed portions) is provided to correspond to the pair of engaging portions 134. The pair of engaged portions 162 (recessed portions) is provided on both sides of a second center portion, which is the center of the plate-shaped portion 152. The second center portion is the portion of the plate-shaped portion 152 closest to the rotation axis of the operation button 6B. In the example of FIG. 11 etc., the inner edge portions of the pair of engaged portions 162 (recessed portions) on the rotation axis side are configured linearly so as to extend in a predetermined direction perpendicular to the rotation axis. Of the pair of engaged portions 162 (recesses), one engaged portion 162 (recesses) is recessed toward the other engaged portion 162 side, and the other engaged portion 162 (recesses) is recessed toward the one engaged portion 162 side.

[0048] The fitting portions 164 shown in FIGS. 11 and 15 are portions into which the protrusions 130 are inserted and through which the protrusions 130 pass rearward of the plate-shaped portion 152. In the example of FIG. 11, the plurality of fitting portions 164 are configured as hole-like holes. In the example of FIG. 11, the plurality of fitting portions 164 (holes) are provided around the center (second center) of the plate-shaped portion 152 at positions that are offset from the pair of engaged portions 162 (recesses). In the example of FIG. 11, a pair of fitting portions 164 (holes) is provided to correspond to the pair of protrusions 130. The pair of fitting portions 164 (holes) is provided on both sides of the second center, which is the center of the plate-shaped portion 152. Both fitting portions 164 are configured as rectangular holes, and the inner edge portions of the pair of fitting portions 164 (holes) on the rotation axis side are configured linearly so as to extend in a direction perpendicular to the rotation axis. Moreover, the inner edge portions of the pair of fitting portions 164 (hole portions) on the side opposite to the rotation axis are also formed linearly so as to extend in a direction perpendicular to the rotation axis.

[0049] 13 and 14, the mounting shaft portion 154 is formed integrally with the plate-shaped portion 152 and is a portion that protrudes rearward from the center of the plate-shaped portion 152 beyond the rear surface (back surface) of the plate-shaped portion 152. As shown in FIG. 5, the mounting shaft portion 154 is a portion that is mounted to the shaft member 192. An engaging protrusion 154A is provided near the tip of the mounting shaft portion 154, and the mounting shaft portion 154 is fixed to the shaft member 192 so that this engaging protrusion 154A enters and gets caught in a hole provided in the shaft member 192. Note that the fixing structure of the mounting shaft portion 154 described here is merely one example, and other structures may be adopted as long as they can fix the mounting shaft portion 154 to the shaft member 192.

[0050] The fixing portion 150 configured in this manner is fixed to the main body portion 120 so that each claw portion 138 is hooked onto each engaged portion 162 as shown in Figures 13(A) and 14, in a state where the front surface portion 122 and the plate-shaped portion 152 overlap front to back and the regulating portion 160 regulates the plate-shaped portion 152 from approaching the front surface portion 122 (see Figures 13 and 16), and in a state where each protrusion portion 130 is inserted into each fitting portion 164 (hole portion) (see Figures 13(B) and 15).

[0051] In the example of Figures 13 to 16, the rear surface of the front surface portion 122 and the tip of the regulating portion 160 are configured to be in contact with each other, and the rear surface of the front surface portion 122 and the front plate surface of the plate-shaped portion 152 are configured to face each other, so that the front surface portion 122 and the plate-shaped portion 152 are in an overlapping state overlapping from front to back, and in the overlapping state, each protrusion portion 130 is inserted into the fitting portion 164 (hole portion), each extension portion 136 is fitted into each engaged portion 162 (recess), and the claw portion 138 is configured to hook onto the edge of each engaged portion 162 (recess), so that the fixing portion 150 is fixed to the main body portion 120.

[0052] In the normal fixed state shown in FIGS. 13(A) and 14 , the pair of engaging portions 134 are in a natural state or a nearly natural state, the pair of extending portions 136 are respectively inserted into the pair of engaged portions 162 (recesses), and the portion of the plate-shaped portion 152 between the pair of engaged portions 162 is disposed between the pair of engaging portions 134. Then, each of the pair of claw portions 138 is hooked onto the corresponding engaged portion 162 (recesses) so that each is positioned adjacent to the rear of the corresponding edge of the engaged portion 162 (recesses). Therefore, the plate-shaped portion 152 is prevented from detaching rearward from each of the claw portions 138. Meanwhile, in the fixed state shown in FIGS. 13(A) and 14 , the tip portions of the plurality of restricting portions 160 (protrusions) provided to protrude forward from the plate-shaped portion 152 are positioned to contact the rear surface of the front surface portion 122, thereby restricting the plate-shaped portion 152 from moving forward (toward the front surface portion 122). The plurality of restricting portions 160 (protrusions) are set to have the same protrusion amount, and when the tips of the plurality of restricting portions 160 (protrusions) are all in contact with the rear surface of the front surface portion 122, the plate-shaped portion 152 and the front surface portion 122 are arranged in a parallel state. In this way, the plate-shaped portion 152 is stably held at a position a certain distance from the front surface portion 122 by being restricted from moving forward and prevented from slipping out backward, and therefore the fixing portion 150 is held in a state where rattle is suppressed.

[0053] In the fixed state described above, as shown in FIGS. 13B and 15, the second plate surface 131B of the first plate portion 131 of the protruding portion 130 and the edge portion of the second plate portion 132 opposite the first plate portion 131 are closely adjacent to the inner periphery of the fitting portion 164 (hole). Specifically, the second plate surface 131B of each first plate portion 131 is adjacent to the inner edge portion of each fitting portion 164 (hole) on the rotation shaft side, and the plate surface of the first plate portion 131 is closely adjacent to and along the inner edge portion of the fitting portion 164 (hole) on the rotation shaft side. In this state, the end portion of each second plate portion 132 opposite the rotation shaft is adjacent to or closely adjacent to the inner edge portion of each fitting portion 164 (hole) on the rotation shaft side. With this configuration, rattle of the fixing portion 150 is suppressed even near both protruding portions 130.

[0054] 13(A) and 14, the pair of engaging portions 134 can be bent outward. Specifically, by bending the tip side of one extension portion 136 away from the rotation axis so as to move one claw portion 138 away from the other claw portion 138, one claw portion 138 is moved outward from the edge of one engaged portion 162 (recess) on the rotation axis side that was hooked on that claw portion 138, and the hooking of one claw portion 138 is released, so that the vicinity of one engaged portion 162 (recess) can be released rearward. Similarly, by bending the tip side of the other extension portion 136 away from the rotation axis so as to move the other claw portion 138 away from one claw portion 138, the other claw portion 138 is moved outward from the edge of the rotation axis side of the other engaged portion 162 (recess) that was hooked on the other claw portion 138, and by releasing the hooking of the other claw portion 138, the vicinity of the other engaged portion 162 (recess) can also be released rearward. Once the hooking of both engaged portions 162 is released, the fixing portion 150 can be released from the main body portion 120.

[0055] 3.Example of effects In gas stove 1, with front surface 122 provided on main body 120 and plate-shaped portion 152 provided on fixing portion 150 overlapping each other from front to back, fixing portion 150 is fixed to main body 120 so that protruding portion 130 protruding rearward from the back surface of front surface 122 fits into fitting portion 164 provided on plate-shaped portion 152, and engaging portion 134 protruding rearward from the back surface of front surface 122 hooks into engaged portion 162 provided on plate-shaped portion 152. This fixing structure allows protruding portion 130 extending away from tubular portion 124 to fit into fitting portion 164 of plate-shaped portion 152, and hooks claw portion 138 of engaging portion 134 away from tubular portion 124 into engaged portion 162 of plate-shaped portion 152, so that fixing portion 150 can be easily and stably fixed to main body 120 in a manner that is not easily affected by the shape of tubular portion 124. Therefore, the fixing part 150 can be easily attached inside the main body part 120, and the attached state can be easily maintained stably.

[0056] In gas stove 1, fixing portion 150 is fixed to main body portion 120 in a configuration in which disc-shaped front surface portion 122 and disc-shaped plate-shaped portion 152 are stacked inside cylindrical tubular portion 124, and each extension portion 136 is fitted into a pair of recesses (engaged portions 162 configured as recesses) provided on the outer edge of disc-shaped plate-shaped portion 152, while each claw portion 138 is hooked onto each recess (engaged portions 162 configured as recesses). This configuration allows each extension portion 136 to be fitted into each recess (engaged portions 162 configured as recesses) and stably positioned, and then each claw portion 138 is hooked onto each recess (engaged portions 162 configured as recesses). This configuration allows disc-shaped plate-shaped portion 152 to be more stably attached inside cylindrical main body portion 120. Furthermore, because such hooking structures are provided on both sides of disc-shaped plate-shaped portion 152, the attachment of plate-shaped portion 152 is even more stable. Furthermore, in this gas stove 1, the fixing portion 150 is fixed to the main body portion 120 in a configuration in which each protrusion 130 is inserted into each hole portion (the mating portion 164 configured as a hole portion) and each extension portion 136 fits into each recess portion (the engaged portion 162 configured as a recess portion), so that adhesion can be increased at many positions in the circumferential direction and the relative movement of the plate-shaped portion 152 with respect to the front surface portion 122 can be stably restricted.

[0057] In the gas stove 1, the pair of engaging portions 134 face each other in a first direction perpendicular to the front-rear direction and are disposed on both sides of the mounting shaft 154 in the first direction. Meanwhile, the pair of protruding portions 130 face each other in a second direction perpendicular to the front-rear direction and the first direction and are disposed on both sides of the mounting shaft 154 in the second direction. In this way, the pair of engaging portions 134 and the pair of protruding portions 130 are disposed in a balanced manner in the circumferential direction of the main body 120 at a pitch of approximately 90 degrees, thereby further stabilizing the mounting state. Furthermore, the facing direction of the pair of engaging portions 134 and the facing direction of the pair of protruding portions 130 are perpendicular to each other, and each of the claw portions 138 is configured to protrude toward the center of the tubular portion 124, so the claw portions 138 are less likely to interfere with the protruding portions 130 or the tubular portion 124.

[0058] The gas stove 1 is configured so that the protrusion 130 is inserted into the hole so that the plate surface (second plate surface 131B) of the first plate portion 131 provided on the protrusion 130 and the edge portion of the second plate portion 132 opposite the first plate portion 131 are adjacent to the inner periphery of the hole (the engaging portion 164 configured as a hole).This improves the adhesion between the inner periphery of the hole and the protrusion 130, making it easier to suppress rattling of the fixing portion 150.

[0059] <Other embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, any combination of features of the above-described or following embodiments is possible within a range that does not contradict. Furthermore, any feature of the above-described or following embodiments may be omitted unless explicitly stated as essential. Furthermore, the above-described embodiments may be modified as follows.

[0060] In the gas stove 1 of the embodiment described above, the fitting portion 164 is configured as a hole portion and has a hole-like shape, but the fitting portion 164 may be changed to have a concave shape. For example, the fitting portion may be configured as a recess that is configured to be recessed toward the center of the plate-like portion at the outer edge of the plate-like portion 152.

[0061] In the gas stove 1 of the above-described embodiment, the engaged portion 162 is configured as a recess, but the engaged portion 162 may also be configured as a hole portion, or may be configured by the arc-shaped outer edge portion of the plate-shaped portion 152.

[0062] In the gas stove 1 of the embodiment described above, the shaft member 192 of the operated device 190 is formed in a cylindrical shape, and the mounting shaft portion 154 is inserted into and fixed to the inside of the shaft member 192, but any other configuration may be used as long as it is possible to fix the mounting shaft portion 154 to the shaft member 192. Furthermore, the configuration of the shaft member and the mounting shaft portion is not limited to the above example, and for example, the mounting shaft portion may be formed in a cylindrical shape extending in the front-rear direction, and a hollow or solid shaft member extending in the front-rear direction may be inserted into and fixed to the inside of the mounting shaft portion.

[0063] It should be noted that the embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is not limited to the embodiments disclosed herein, but is intended to include all modifications within the scope indicated by the claims or the scope equivalent to the claims. [Explanation of symbols]

[0064] 1: Gas stove 2: Housing 6A: Operation button 6B: Operation button 6C: Operation buttons 6D: Operation buttons 51: Gas burner 52: Gas burner 53: Gas burner 54: Gas burner 70A: Panel section 70B: Panel section 101: Through hole 102: Through hole 103: Through hole 104: Through hole 120: Main body 122: Front part 124: Cylindrical part 130: Protrusion 131: Section 1 131B: Second panel 132: Part 2 134: Department of Integration 136: Extension Section 138:Claws 150: Fixed part 152: plate-shaped part 154: Mounting shaft 160: Regulation Department 162: The unit of connection 164: Chimeric part 190: Operated device 192: Shaft material

Claims

1. A gas stove comprising: a gas burner; an operated device having a shaft member, the shaft member being rotatable and movable back and forth; and a housing that accommodates the operated device and at least a part of the gas burner; A panel portion having a through hole and constituting a part of the front surface of the gas stove; an operation button inserted into the through hole and movable back and forth and rotatable; Equipped with the operation button has a main body portion integrally formed with a plate-like front surface portion and a tubular portion extending rearward from the front surface portion, and a fixing portion fixed to the main body portion, the main body portion includes an engaging portion that protrudes rearward from the rear surface of the front surface portion on an inner side away from the cylindrical portion and has a claw portion provided at a tip side thereof, and a protruding portion that protrudes rearward from the rear surface of the front surface portion on an inner side away from the cylindrical portion, the fixing portion includes a plate-shaped portion that is configured in a plate shape and is arranged to overlap the front portion, and an attachment shaft portion that protrudes rearward from the plate-shaped portion and is attached to the shaft member, The plate-shaped portion is provided with a restricting portion that protrudes forward from the front surface side of the plate-shaped portion, an engaged portion that is a portion on which the claw portion is hooked, and a recessed or hole-shaped fitting portion that is a portion into which the protruding portion is inserted and through which the protruding portion passes rearward from the plate-shaped portion, The fixing portion is fixed to the main body portion such that the claw portion is caught on the engaged portion in a state in which the front surface portion and the plate-like portion overlap each other in the front-rear direction and the restricting portion restricts the plate-like portion from approaching the front surface portion, and in a state in which the protruding portion is inserted into the fitting portion. Gas stove.

2. The front surface is configured in a disk shape, The tubular portion is configured in a cylindrical shape, The plate-shaped portion is configured in a disk shape, the fitting portion is a hole portion, the engaging portion has an extension portion that extends rearward from the rear surface of the front surface portion on an inner side away from the cylindrical portion, and the claw portion is provided on a tip side of the extension portion, the engaged portion is a recessed portion that is recessed toward the center of the plate-shaped portion at an outer edge of the plate-shaped portion, The front surface portion is provided with a pair of the engaging portions on both sides of a first center portion that is a center portion of the front surface portion, The plate-shaped portion is provided with a pair of recesses on both sides of a second center portion that is a center portion of the plate-shaped portion, a plurality of the protrusions are provided around the first center portion on the front surface portion at positions spaced apart from the engaging portion; a plurality of the holes are provided around the second center portion of the plate-shaped portion at positions deviated from the recess; The rear surface of the front surface portion and the tip end of the restricting portion are configured to be in contact with each other, and the rear surface of the front surface portion and the front plate surface of the plate-like portion are configured to face each other, so that the front surface portion and the plate-like portion are in an overlapping state where they are overlapped from front to back, and in the overlapping state, the protruding portion is inserted into the hole portion, the extending portion is configured to fit into the recess, and the claw portion is configured to hook onto the edge of the recess, so that the fixing portion is fixed to the main body portion.

2. The gas stove according to claim 1.

3. The front surface portion is provided with a pair of the engaging portions on both sides of a first center portion that is a center portion of the front surface portion, a pair of the protruding portions are provided on the front surface portion at positions separated from the pair of engaging portions and on both sides of the first center portion, The pair of engaging portions face each other in a first direction perpendicular to the front-rear direction and are disposed on both sides of the mounting shaft portion in the first direction, The pair of protrusions face each other in a second direction perpendicular to the front-rear direction and the first direction, and are disposed on both sides of the mounting shaft in the second direction. Each of the claws protrudes toward the center of the cylindrical portion.

3. A gas stove according to claim 1 or claim 2.

4. the fitting portion is a hole portion, The protruding portion has a first plate portion configured in a plate shape and protruding from the rear surface of the front surface portion, and a second plate portion configured in a plate shape and protruding from the rear surface of the front surface portion and protruding from a first plate surface of the first plate portion in a radial direction of the front surface portion, and the second plate surface of the first plate portion and an edge portion of the second plate portion opposite to the first plate portion are adjacent to an inner periphery of the hole portion.

3. A gas stove according to claim 1 or claim 2.

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