JP6919892B2 - Gas stove - Google Patents

Description

The present invention relates to a gas stove.

The gas stove is equipped with a fuel supply device that supplies gas to the burner. For example, the combustion amount adjusting body described in Patent Document 1 has a push-push mechanism that alternately ignites and extinguishes a fire each time a pushing operation is performed in which a rotatable operation knob is pushed backward from the front surface of the stove body. .. Specifically, when extinguishing a fire, the operation knob is in a standby position where the tip surface is located near the front surface of the stove body. When the operation knob is pushed backward from the standby position by the pushing operation, gas is supplied to the burner and ignition is performed in the process. After ignition, the operation knob is moved to the operation position protruding from the front of the stove body by the spring. At the operating position, the operating knob can be rotated to adjust the thermal power. When the operation knob is pushed backward from the operation position by the pushing operation, the gas supply to the burner is cut off in the process. The operation knob returns to the standby position by the spring.

In Patent Document 1, the supply and cutoff of gas to the burner is performed by electronic control using a solenoid valve. The child lock function mounted on such a gas stove can be in a state where the gas supply to the burner is cut off, for example, by controlling the solenoid valve not to be energized when it is effective.

In order to reduce costs, when the function of electronically controlling gas supply and shutoff is omitted and a fuel supply device that mechanically supplies and shuts off gas by a valve linked to the push-push mechanism is manufactured, electronic control is performed. The child lock mechanism by is not available. In this case, for example, a child lock mechanism is conceivable in which a lock portion that mechanically restricts the pushing operation of the operating knob is inserted behind the operating knob to prevent the operating knob from being pushed backward from the standby position. Such a mechanical child lock mechanism should be disabled when using the burner. For example, when another member is provided on the rear side of the operation knob, the size of the lock portion is formed according to the size of the gap between the operation knob and the other member, and the operation knob is in the standby position and the burner is extinguished. Only the lock should be able to be inserted into the gap.

JP-A-2015-36593

However, the operation knob is pushed backward from the front of the stove body when the burner is ignited by the pushing operation, and then moves to the operation position via the standby position, and when the fire is extinguished, the operation knob moves from the operation position to the front of the stove body via the standby position. Pushed backwards. When passing through the standby position, for example, if the lock portion is inserted into the gap due to an erroneous operation, the operation knob cannot move from the standby position. Therefore, it is necessary to release the child lock in order to ignite or extinguish the burner. Since the operation knob is urged to the side protruding by the spring, when the lock portion receives a pressing force from the inner surface of the gap due to the urging force of the spring, the lock portion becomes difficult to move. In order to release the child lock, it was necessary to move the lock part with a larger force than when it was locked.

An object of the present invention is to provide a gas stove that can be easily released even if the operation unit is locked due to an erroneous operation.

The gas stove of the invention according to claim 1 of the present invention flows through a housing provided with a burner, a gas flow path through which gas supplied to the burner flows, an on-off valve for opening and closing the gas flow path, and the gas flow path. A fuel supply device provided with a control valve for adjusting the flow rate of the gas to be used, and an operation unit for opening / closing the on-off valve and adjusting the control valve, and a fuel supply device arranged at the front portion in the housing, and the operation unit. A gas stove provided with a lock member for restricting and releasing the operation of the fuel supply device, the control valve of the fuel supply device can be operated by a rotation operation, and the control valve can be operated by one or more urging members. An operation knob that is urged forward, and an operation position in which the operation knob protrudes from the front surface of the housing each time a pushing operation is performed in which the operation knob is pushed backward from the front surface of the housing. A mechanism for alternately moving the operation knob between a standby position where the tip surface of the operation knob is located closer to the front surface of the housing than the operation position, and the operation knob is the standby position. When the pushing operation is performed at the time of If the pushing operation is performed while the operating knob is in the operating position, the gas is pushed backward from the front surface of the housing via the standby position. When the push-push mechanism that urges the operation knob forward by the urging member and moves it to the standby position and the push-push mechanism that is interlocked with the push-push mechanism and the operation knob is in the standby position, the operation knob is described. The operation unit includes a valve opening / closing mechanism that keeps the on-off valve closed in the gas flow path and, when the on-off valve is in the operating position, keeps the gas flow path open. Is a shaft portion that extends in the front-rear direction with a diameter smaller than that of the operation knob, holds the operation knob at the tip portion, and moves in the front-rear direction together with the operation knob, and the circumference of the shaft portion behind the operation knob. The lock member includes an overhanging portion that is provided so as to project outward in the radial direction in at least a part of the direction, moves in the front-rear direction together with the shaft portion, and forms a gap between the operating knob and the operating knob. Is arranged at a position of a moving portion that performs an operation of moving the lock member in a moving direction orthogonal to the front-rear direction and the gap when the operation knob is located in the standby position in the front-rear direction, and is arranged in the front-rear direction. The size is the size of the gap It is provided with a lock portion smaller than the diameter, and when the operation knob is in the standby position, it can be moved from the release position on one side in the moving direction to the lock position on the other side in the moving direction by operating the moving portion. The lock portion has a relief inclined surface on the rear surface where the side closer to the shaft portion is located forward of the far side, and when the lock member is located at the lock position, the lock portion approaches the shaft portion. When the lock member is located radially inside the shaft portion with respect to the overhang portion and has entered the gap, and the lock member is located at the release position, the overhang portion is separated from the shaft portion. It is characterized in that it is located on the radial side of the shaft portion with respect to the portion and is in a state of being separated from the gap.

In the gas stove of the invention according to claim 2, in addition to the configuration of the invention according to claim 1, when the operation knob is in the operation position, the overhanging portion has the lock portion and the shaft portion in the moving direction. It is characterized by being located between.

In addition to the configuration of the invention according to claim 1, the gas stove of the invention according to claim 3 has an extruded inclined surface in which the overhanging portion is located on the front surface and the side near the shaft portion is located in front of the far side. When the lock portion is located in the gap, the extruded inclined surface faces the escape inclined surface.

The gas stove of the invention according to claim 4 has a plurality of fuel supply devices in addition to the configuration of the invention according to any one of claims 1 to 3, and is arranged side by side at the front portion of the housing. The lock member is provided so as to be movable in the left-right direction, and is provided with two lock portions corresponding to the gaps of the adjacent fuel supply devices.

According to the gas stove of the invention according to claim 1, when the burner is ignited, the operation knob is pushed from the standby position to the rear of the front surface of the housing by a pushing operation, and then moves to the operating position via the standby position. When the burner is extinguished, the operation knob is pushed from the operation position through the standby position to the rear of the front surface of the housing by the pushing operation, and then moves to the standby position. When passing through the standby position, the lock portion may be inserted into the gap of the operation portion by operating the lock member. The operation knob is urged forward by one or more urging members, and presses the lock portion on the front surface of the overhanging portion. The lock portion has a relief inclined surface on the rear surface. When the front surface of the overhanging portion escapes and presses the inclined surface forward, the stress that moves the lock member toward the release position acts on the lock portion due to the component force. As a result, the lock member can be easily moved from the lock position to the release position, so that the lock portion can be released from the gap and the operation knob can be moved from the locked state. Therefore, even if the lock portion of the gas stove is inserted into the gap by an erroneous operation and the operation portion is locked, the lock can be easily released. In addition, the lock member may impose a load on the movement in the moving direction so that the operation by, for example, a child's mischief is not easy. In this case, even if the component force that the overhanging portion releases and presses the inclined surface acts on the lock member, the lock member may not move to the release position. However, when the lock member is stressed in the direction toward the release position, the lock member can be easily manually moved from the lock position to the release position, and the lock state can be released.

According to the gas stove of the invention according to claim 2, in addition to the effect of the invention according to claim 1, when the operation knob is in the operation position, the overhanging portion moves in the front-rear direction together with the operation knob and the shaft portion. It is located between the lock and the shaft. That is, the gap between the operation knob and the overhanging portion is not in the moving direction of the locking portion. Therefore, even if the lock member tries to move to the lock position, the lock portion abuts on the overhanging portion and cannot approach the shaft portion, and cannot move into the gap. Therefore, the gas stove can prevent the lock member from moving to the lock position due to an erroneous operation or the like when the operation knob is in the operation position and the burner is burning.

According to the gas stove of the invention according to claim 3, in addition to the effect of the invention according to claim 1 or 2, by providing an extruded inclined surface on the front surface of the overhanging portion, the overhanging portion can be efficiently pushed to the lock portion. Pressure can be applied, and the stress applied to the lock member in the direction toward the release position can be further increased. This makes it easier for the lock member to move from the lock position to the release position. Further, even when the lock member is manually moved from the lock position to the release position, the lock member can be moved to the release position with a smaller force.

According to the gas stove of the invention according to claim 4, in addition to the effect of the invention according to any one of claims 1 to 3, the lock member includes two lock portions, and each lock portion has two fuel supply devices. Corresponds to each gap. Therefore, in order for the two locks to enter their respective corresponding gaps, the operating knobs of the two fuel supply devices need to be located in their respective standby positions. That is, when one of the burners is in use, the operation knob of the fuel supply device corresponding to the burner is in the operation position, and the lock portion cannot be inserted into the gap, so that the lock member cannot be moved to the lock position. Therefore, the gas stove can reduce the possibility that the lock portion is inserted into the gap due to an erroneous operation and the operation portion is locked.

In the present invention, the matters specifying the invention according to claims 1 to 4 may be arbitrarily combined.

It is a perspective view of the gas stove 1. It is a perspective view of the fuel supply device 20 and the operation knob 14. It is sectional drawing of the fuel supply device 20 and the operation knob 14. It is a perspective view which looked at the operation part 21 from the front left obliquely lower part. It is a figure for demonstrating operation of a push-push mechanism 24. It is an exploded perspective view of the panel device 9B. It is a perspective view which looked at the lock member 60 from the rear right diagonally upper side. It is the figure which looked at the operation part 21 when the operation knob 14 is in a standby position from the rear left diagonally above. It is the figure which looked at the operation part 21 when the operation knob 14 is in an operation position, seen from the rear left diagonally above. It is a figure which looked at the operation part 21 when the operation knob 14 moves from a standby position to an operation position from the rear left diagonally upper side.

Hereinafter, embodiments of the present invention will be described. Unless otherwise specified, the structure of the device described below is not intended to be limited thereto, but is merely an example of explanation. The drawings are used to illustrate the technical features that can be adopted by the present invention. In the following description, the left and right, front and back, and top and bottom indicated by arrows in the figure are used.

The gas stove 1 will be described with reference to FIG. The gas stove 1 is a built-in stove. The gas stove 1 includes a housing 2 and a top plate 3. The upper part of the housing 2 is open, and the top plate 3 is installed in the opening portion. In the top plate 3, a right burner 4 is provided on the front right side, a left burner 5 is provided on the front left side, and a back burner 6 is provided on the back side of the center. An exhaust port 7 of a grill device (not shown) installed in the housing 2 is provided at the rear portion of the top plate 3.

A grill door 8 is provided at substantially the center of the front surface of the gas stove 1. The grill door 8 opens and closes a front opening portion of a grill storage (not shown) provided in the grill device. In the area on the right side of the grill door 8, two operation knobs 11 and 12 having a circular front view are provided side by side in the horizontal direction. In the area on the left side of the grill door 8, two operation knobs 13 and 14 having the same shape are provided side by side at the same height position as the operation knobs 11 and 12. Each of the operation knobs 11 to 14 is operated to ignite, extinguish, and adjust the fire power of the right burner 4, the grill burner in the grill (not shown), the back burner 6, and the left burner 5. The operation knobs 11 to 14 are attached to the front ends of the fuel supply device 20 (see FIG. 2), respectively.

The fuel supply device 20 will be described with reference to FIGS. 2 to 5. The gas stove 1 includes a right burner 4, a left burner 5, a back burner 6, and four fuel supply devices for supplying gas to the grill device. Among them, the fuel supply device 20 for supplying gas to the right burner 4, the left burner 5, and the back burner 6 is a device having the same configuration provided with a known push-push mechanism 24. Further, the fuel supply device (not shown) that supplies gas to the grill device has a push-push mechanism similar to that of the fuel supply device 20, but since the gas flow rate is adjusted by a solenoid valve, the flow rate adjusting unit (not shown). ) Is provided separately. Hereinafter, the fuel supply device 20 for supplying gas to the left burner 5 will be described as an example, and the description of the fuel supply device for supplying gas to the right burner 4, the back burner 6, and the grill device will be omitted. Since the fuel supply device that supplies gas to the right burner 4 and the fuel supply device that supplies gas to the back burner 6 have the same configuration as the fuel supply device 20, they are designated by the same reference numerals for convenience. It is called a device 20.

As shown in FIGS. 2 to 4, the fuel supply device 20 is a device that ignites and extinguishes the left burner 5 and adjusts the amount of gas supplied to the left burner 5 by pushing and rotating the operation knob 14. Is. The pushing operation is an operation of pressing the front surface of the operation knob 14 backward and pushing it to the back side of the front surface of the gas stove 1. The rotation operation is an operation of gripping the side surface of the operation knob 14 and rotating about the axis (axis center AX) in the front-rear direction. The fuel supply device 20 includes an operation unit 21, a gas flow path unit 22, a thermal power adjustment cam 26, a flow rate adjustment unit 31, and the like.

The operation unit 21 includes an operation knob 14, a push / push mechanism 24, a connecting member 25, and a medium heat guide 90. The connecting member 25 and the medium heat guide 90 will be described later. The operation knob 14 is formed in a substantially columnar shape. Each time the operation knob 14 is pushed toward the rear of the gas stove 1, the operation knob 14 moves from the standby position to the operation position via the first push position, and moves from the operation position to the standby position via the second push position. The operation of moving is performed alternately. As shown in FIG. 5A, the standby position is a position where the tip surface of the operation knob 14 is substantially flush with the front surface F (front surface of the panel device 9B) of the housing 2. In the standby position, the front end surface of the operation knob 14 may be located slightly behind the front surface F of the housing 2, or may be located slightly in front of the front surface F of the housing 2. In the fuel supply device 20 shown in FIGS. 2 to 4, the operation knob 14 is located at the standby position.

As shown in FIG. 5B, the first pushing position is a position where the tip surface of the operation knob 14 is pushed rearward from the front surface F of the housing 2. The operation knob 14 is located behind the standby position in the first pushing position. As shown in FIG. 5C, the operation position is a position where the tip surface of the operation knob 14 projects with respect to the front surface F of the housing 2. The operation knob 14 is located in front of the standby position in the operation position. When in the operating position, the operating knob 14 is rotatable (rotatable) about the axial center AX along the front-rear direction. As shown in FIG. 5D, the second pushing position is a position where the tip surface of the operation knob 14 is pushed rearward from the front surface F of the housing 2. The operation knob 14 is located at the second pushing position, behind the standby position and in front of the first pushing position.

As shown in FIG. 3, the push-push mechanism 24 positions the operation knob 14 at each position of the standby position, the first push position, the operation position, and the second push position, and the main valve 39 described later according to each position. To be kept open or closed. Inside the push / push mechanism 24, there are two sliders 40 and 41 that move in the front-rear direction according to the pushing operation of the operation knob 14, and springs 42 and 43 that urge the sliders 40 and 41 toward the front, respectively. Provided. Cam mechanisms 44 and 45 are provided on the sliders 40 and 41, respectively. Since the cam mechanisms 44 and 45 are all well-known, detailed description of the operation will be omitted.

Each time the operation knob 14 is pushed in, the slider 40 moves the operation knob 14 from the standby position to the operation position via the first push position and from the operation position via the second push position by the cam mechanism 44. The operation of moving to the standby position is repeated. The slider 41 is interlocked with the slider 40, and when the operation knob 14 moves from the standby position to the first pushing position, the main valve 39 and the safety valve 48 are pushed backward to open the main valve 39, and the cam mechanism 45 releases the main valve 39. Keep open. Further, the slider 41 releases the pressed state of the main valve 39 when the operation knob 14 moves from the operating position to the standby position via the second pushing position.

The gas flow path portion 22 is connected to the rear side of the push / push mechanism 24. A first gas passage 46 is formed inside the gas passage portion 22. The first gas passage 46 circulates the gas supplied from the gas supply pipe (not shown) connected to the introduction port 23 that opens at the bottom to the flow rate adjusting unit 31. A main valve 39 and a safety valve 48 are provided in the first gas passage 46. The main valve 39 is elastically urged by a spring 47 in a closed state in which the first gas passage 46 is closed. As described above, when the main valve 39 is pressed by the slider 41 interlocking with the slider 40 that moves in response to the pushing operation of the operation knob 14, the first gas passage 46 is opened. Further, when the pressure by the slider 41 is released, the main valve 39 closes the first gas passage 46 by the spring 47. The safety valve 48 is an electromagnetically operated valve that is elastically urged in a closed state in which the first gas passage 46 is closed by a spring 49. When the safety valve 48 is pressed together with the main valve 39 by the slider 41 interlocking with the slider 40 that moves in response to the pushing operation of the operation knob 14, the safety valve 48 opens the first gas passage 46. The safety valve 48 is an electromagnetically operated valve, and when it is opened by the slider 41, it is maintained in the open state by the control device (not shown) of the gas stove 1. When the left burner 5 is extinguished by closing the main valve 39, the control device releases the open state of the safety valve 48. In this case, the safety valve 48 closes the first gas passage 46 by the spring 49.

As shown in FIGS. 2 to 4, the flow rate adjusting unit 31 is provided above the push / push mechanism 24 and the gas flow rate unit 22. A second gas passage 19 (see FIG. 3) is formed inside the flow rate adjusting unit 31. The second gas passage 19 circulates the gas supplied from the gas flow path portion 22 and supplies the gas to the left burner 5 via a gas supply pipe (not shown) connected to the outlet 32 that opens at the top. A hole 30 communicating with the second gas passage 19 is formed at the front end portion of the flow rate adjusting portion 31, and the needle valve 28 is inserted into the hole portion 30. The front end side of the needle valve 28 is exposed to the outside from the hole 30, and the rear end side is arranged so as to be movable in the front-rear direction in the second gas passage 19. A pin 29 extending in the vertical direction is provided at the front end of the needle valve 28.

The thermal power adjusting cam 26 is formed in a substantially semi-cylindrical shape, and is rotatably provided around the axis AX so as to cover the upper part on the front end side of the push / push mechanism 24. The thermal power adjusting cam 26 is restricted from moving in the front-rear direction. A cam groove 27 is provided on the outer peripheral portion of the thermal power adjusting cam 26. The cam groove 27 is formed in a spiral shape centered on the axis AX. The lower end of the pin 29 provided on the needle valve 28 engages with the cam groove 27. When the thermal power adjusting cam 26 rotates, the cam groove 27 guides the pin 29 and moves the needle valve 28 in the front-rear direction.

The thermal power adjusting cam 26 includes an extension portion 34 extending forward, and has a tooth portion 35 protruding inward at the front end portion of the extension portion 34. The tooth portion 35 meshes with the tooth portion 38 (described later) of the connecting member 25 when the operating knob 14 is in the operating position (see FIG. 5C), and the operating knob 14 operates the thermal power adjusting cam 26 via the connecting member 25. At the same time, it rotates around the axis AX. The stretched portion 34 includes a tapered portion 34A that narrows in the middle. When the pushing operation is performed on the operation knob 14, the tapered portion 34A engages with the medium heat guide 90 and rotates the medium heat guide 90.

A substantially semi-cylindrical LED operating member 36 is fixed to the outer peripheral surface of the extending portion 34 of the thermal power adjusting cam 26. The LED operating member 36 is connected to a thermal power display member (not shown) of the decorative panel 80 (see FIG. 6). The thermal power display member displays the thermal power by shielding the LED light. The LED operating member 36 rotates around the axis AX together with the thermal power adjusting cam 26, and displays the thermal power by the thermal power display member according to the flow rate of the gas. The LED operating member 36 has a groove 36A on the lower surface that narrows from the front to the rear.

The connecting member 25 of the operation unit 21 extends forward from the slider 40 of the push / push mechanism 24 and engages with the shaft body 37 centered on the axis AX. The connecting member 25 is held at the front end portion of the shaft body 37, and is provided so as to be movable in the front-rear direction together with the slider 40 in a state where the connecting member 25 can rotate around the shaft body 37 about the axis center AX. The operation knob 14 is held by the tip portion 25A of the connecting member 25, is movable in the front-rear direction together with the connecting member 25, and is rotatably provided about the axis AX. The connecting member 25 has a tooth portion 38 that meshes with the tooth portion 35 of the thermal power adjusting cam 26 on the outer peripheral surface of the rear end portion. When the operating knob 14 is in the operating position, the tooth portion 38 of the connecting member 25 meshes with the tooth portion 35 of the thermal power adjusting cam 26 to connect the operating knob 14 and the thermal power adjusting cam 26. When the operation knob 14 is not in the operation position, the tooth portion 35 of the thermal power adjustment cam 26 is located in front of the tooth portion 38 of the connecting member 25 and does not mesh with each other, so that the operation knob 14 and the thermal power adjustment cam 26 are connected. unlock.

The medium heat guide 90 is arranged on the rear side of the connecting member 25. The medium heat guide 90 is fixed to the shaft body 37 of the slider 40 and is provided so as to be movable in the front-rear direction together with the slider 40. The medium heat guide 90 has a fixed portion 91, a half collar portion 92, and a guide portion 93. The fixing portion 91 has a tubular shape, and the medium heat guide 90 is fixed to the shaft body 37. The half collar portion 92 projects radially outward from the lower portion of the front end portion of the fixing portion 91 in a collar shape. The connecting member 25 is rotatably provided with respect to the front surface of the half collar portion 92.

The guide portion 93 has a substantially tubular shape, and the inner surface of the rear end portion of the lower portion is connected to the outer peripheral portion of the half flange portion 92. That is, the guide portion 93 is provided so as to project outward in the radial direction of the connecting member 25. The guide portion 93 is arranged with a gap G in the front-rear direction between the guide portion 93 and the operation knob 14. The upper portion of the guide portion 93 is provided with a diameter larger than that of the lower portion, and an opening 94 is formed between the inner surface of the rear end portion and the upper portion of the front end portion of the fixing portion 91. An extension portion 34 of the thermal power adjusting cam 26 is inserted through the opening portion 94. The inner diameter of the lower portion is larger than the maximum diameter of the tooth portion 38 of the connecting member 25. Further, a guide protrusion 95 is provided on the upper surface of the upper portion of the guide portion 93. The guide protrusion 95 engages with the groove portion 36A provided on the lower surface of the LED operating member 36.

Further, as shown in FIG. 4, an inclined portion 96 projecting diagonally downward to the left is provided at the lower left corner portion of the lower portion of the guide portion 93. An inclined surface 97 is formed on the inclined portion 96 so as to face diagonally downward to the front left. The inclined portion 96 is provided symmetrically, and a similar portion is formed in the lower right corner portion.

Next, ignition and extinguishing and adjustment of thermal power by rotating the operation knob 14 will be described. As shown in FIGS. 2 to 4, when the left burner 5 is extinguished, the operation knob 14 is in the standby position. At the time of ignition, the user performs a pushing operation on the operation knob 14. The safety valve 48 and the main valve 39 are opened in the process of moving the operation knob 14 from the standby position to the first pushing position. Further, the left burner 5 is ignited by an igniter (not shown). The medium heat guide 90 rotates the thermal power adjusting cam 26 to a position substantially centered on the left and right by pressing the tapered portion 34A of the extending portion 34 of the thermal power adjusting cam 26 with the edge portion of the opening 94. Further, the guide protrusion 95 assists the rotation of the thermal power adjusting cam 26 by pressing the groove portion 36A of the LED operating member 36 so that the thermal power adjusting cam 26 rotates to a position substantially centered on the left and right. As a result, the needle valve 28 moves to a position where the flow rate of the gas corresponds to medium heat, so that a sufficient amount of gas for ignition is supplied to the left burner 5 and flame overflow at the time of ignition is prevented.

When the user releases the operation knob 14, the operation knob 14 moves from the first pushing position to the operation position by the urging force of the spring 42 of the slider 40. The main valve 39 is maintained in an open state by the slider 41. The safety valve 48 is electromagnetically operated by the control device and is maintained in an open state. When the tooth portion 38 of the connecting member 25 and the tooth portion 35 of the thermal power adjusting cam 26 mesh with each other, the operation knob 14 is connected to the thermal power adjusting cam 26.

When the operation knob 14 is rotated while the operation knob 14 is in the operation position, the thermal power adjusting cam 26 rotates around the axis AX together with the operation knob 14. When the thermal power adjusting cam 26 rotates, the pin 29 of the needle valve 28 is guided by the cam groove 27 and moves in the front-rear direction. As a result, the needle valve 28 moves in the front-rear direction, so that the flow rate of the gas flowing through the second gas passage is adjusted according to the position of the needle valve 28, and the thermal power of the left burner 5 is changed.

When extinguishing a fire, the user performs a pushing operation on the operation knob 14. In the process of moving the operation knob 14 from the operation position to the second push-in position, the meshing state of the connecting member 25 and the thermal power adjusting cam 26 is released. Therefore, even if the operation knob 14 rotates in the process of the pushing operation, the thermal power adjusting cam 26 does not rotate.

When the user releases the operation knob 14, the pressing state by the slider 41 is released, so that the main valve 39 is closed by the urging force of the spring 47. Further, the operation knob 14 moves from the second pushing position to the standby position by the urging force of the spring 42 of the slider 40, the spring 43 of the slider 41, and the spring 47 of the main valve 39. Since the main valve 39 is closed while the operation knob 14 is moving from the second pushing position to the standby position, the urging force of the spring 47 is while the operation knob 14 is moving from the second pushing position to the standby position. Will disappear. When the left burner 5 is extinguished by closing the main valve 39, the control device releases the electromagnetic operation of the safety valve 48, so that the safety valve 48 is closed by the urging force of the spring 49.

In this way, the fuel supply device 20 repeatedly ignites and extinguishes the fire each time a pushing operation is performed on the operation knob 14. The same applies to the operation knobs 11 and 13 corresponding to the right burner 4 and the back burner 6, respectively. Further, the fuel supply device of the grill device includes a plurality of switches (not shown) that are switched on and off according to the rotation position of the operation knob 12. The flow rate adjusting unit of the grill device adjusts the thermal power of the grill burner by switching the open / closed state of the plurality of solenoid valves according to the on / off states of the plurality of switches. The point that the grill burner is ignited and extinguished by pushing the operation knob 12 is the same as the fuel supply device 20 of the right burner 4, the left burner 5, and the back burner 6.

The gas stove 1 has a child lock function that prevents the operation knobs 11 to 14 from being pushed in when the operation knobs 11 to 14 are in the standby position in order to prevent accidental operation of the operation knobs 11 to 14 and unintentional ignition of the burner due to mischief by a child. Be prepared. The child lock function is performed by the lock member 60 provided on the panel devices 9A and 9B attached to the front portion of the housing 2.

As shown in FIG. 1, the gas stove 1 is provided with a right burner 4 and a panel device 9A for displaying the thermal power of the grill device in the area on the right side of the grill door 8, and a left burner 5 in the area on the left side of the grill door 8. A panel device 9B for displaying the thermal power of the back burner 6 is provided.

The panel device 9B will be described with reference to FIGS. 6 and 7. The configuration for the child lock function in the panel device 9A is the same as the configuration for the child lock function in the panel device 9B. Therefore, the configuration of the panel device 9A is assumed to be similar to the configuration of the panel device 9B, and the description thereof will be omitted.

The panel device 9B includes a panel main body 50, a decorative panel 80, and a lock member 60. The panel body 50 is assembled to the front end of the housing 2. As shown in FIG. 6, the lower portion 51 of the panel main body 50 is formed in a box shape and accommodates an operation panel (not shown). The upper portion 52 of the panel main body portion 50 projects upward from the lower portion 51 in a plate shape. In the upper portion 52, two through holes 53 penetrating in the front-rear direction are formed side by side in the left-right direction. The inner diameter of the through hole 53 is larger than the outer diameter of the operation knobs 13 and 14. The fuel supply devices 20 of the left burner 5 and the back burner 6 are fixed side by side to the upper portion 52 of the panel main body 50 with screws from the rear side by using the mounting bracket 33. The connecting member 25 and the operation knobs 13 and 14 of the two fuel supply devices 20 are arranged in the two through holes 53, respectively.

An electronic substrate (not shown) on which a plurality of LEDs for displaying thermal power are mounted is provided on the rear surface of the upper portion 52. The LEDs are arranged side by side in an arc shape on the upper outer peripheral portion of the two through holes 53. The thermal power display member that engages with the LED operating member 36 is arranged on the front side of the LED, and the LED light is partially shielded according to the rotation of the operation knobs 13 and 14 to display the thermal power.

The decorative panel 80 is a plate-like body assembled on the front side of the upper portion 52 of the panel main body 50. The decorative panel 80 has a substantially rectangular shape when viewed from the front, and is provided with a slide lock 85 at the upper end portion. When the decorative panel 80 is assembled to the upper portion 52 of the panel main body 50, when the slide lock 85 is slid to the right, the decorative panel 80 is fixed to the panel main body 50. The decorative panel 80 is formed with two openings 86 that penetrate in the front-rear direction and are arranged in the left-right direction. The inner diameter of the two openings 86 is larger than the outer diameter of the operation knobs 13 and 14, respectively. Operation knobs 13 and 14 are arranged in the two openings 86, respectively. A translucent portion 87 that transmits LED light is provided on the upper outer peripheral portion of each of the two openings 86. The translucent portion 87 displays the thermal power by illuminating the portion not shielded by the thermal power display member brightly by the LED light and darkening the shielded portion. An elongated hole 88 that penetrates the decorative panel 80 in the front-rear direction and extends in an oval shape in the left-right direction is formed between the two openings 86 at the lower part of the decorative panel 80.

The lock member 60 is arranged on the upper wall of the lower portion 51 of the panel main body 50, and is provided so as to be slidable in the left-right direction. The lock member 60 includes a base portion 61, a lever 62, and a lock portion 66. The base portion 61 has a substantially rectangular shape in a plan view and a long plate shape in the left-right direction, and has four ribs 63 extending in the left-right direction on the lower surface. The rib 63 makes it possible to reduce the contact area of the lock member 60 with the upper surface of the upper wall of the lower portion 51, and the lock member 60 can be easily slid. The lever 62 is provided in the center of the front surface of the base portion 61 and projects forward. The lever 62 is inserted into the elongated hole 88 at the lower part of the decorative panel 80 from the rear side, and the tip portion protrudes forward from the front surface F. The user can operate the lever 62 to move the lock member 60 to the lock position and the release position. The lock position is a position where the lever 62 is located at the right end of the elongated hole 88 and the lock member 60 functions the child lock so that the operation knob 14 cannot be moved. The release position is a position where the lever 62 is located at the left end of the elongated hole 88, the lock member 60 does not function as a child lock, and the operation knob 14 can be moved.

Two sets of lock portions 66 are provided, and each of the lock portions 66 projects upward at both left and right ends of the base portion 61. The size W of the lock portion 66 in the front-rear direction is smaller than the gap G in the front-rear direction of the medium heat guide 90 and the operation knob 14. A slope 65 facing diagonally upward to the right is formed on the upper portion of the lock portion 66. Further, an arc-shaped arc surface 64 having a curvature larger than the outer diameter of the connecting member 25 is formed on the upper portion of the slope 65. With the lock member 60 and the fuel supply device 20 assembled to the panel body 50, the upper portion of the slope 65 and the arc surface 64 are located above the lower end positions of the operation knob 14 and the medium heat guide 90 in the vertical direction. do. Further, the lock portion 66 is formed with an inclined surface 67 which is connected to the rear end of the inclined surface 65 and the arc surface 64 and faces diagonally upward to the rear right. A rib 69 that supports the lock portion 66 is provided on the rear side of the inclined surface 67. Then, the front surface 68 of the lock portion 66 faces forward.

Next, the operation of the lock member 60 will be described with reference to FIGS. 5 and 8 to 10. In the following description, for convenience, the operation knob 13 of the back burner 6 is assumed to be in the standby position. As shown in FIG. 8A, when the lock member 60 is located at the left end release position in the left-right direction, the lock portion 66 is located to the left of the operation knob 14. The operation knob 14 and the lock portion 66 do not overlap in the front-rear direction. Therefore, when the pushing operation is performed on the operating knob 14, the operating knob 14 can move to the first pushing position without contacting the lock portion 66.

As shown in FIG. 5A, when the operation knob 14 is in the standby position, the lock portion 66 is located in the gap G between the operation knob 14 and the medium heat guide 90 in the front-rear direction. As described above, the size W of the lock portion 66 in the front-rear direction is smaller than the size of the gap G. Therefore, when the operation knob 14 is in the standby position, when the user operates the lever 62 of the lock member 60 as shown in FIG. 8 (B), the lock member 60 is moved to the right lock position as shown by the arrow M1. You can move and activate the child lock. The lock portion 66 overlaps with the operation knob 14 in the front-rear direction at the lock position. Even if the operating knob 14 is pushed in in this state, the rear surface of the operating knob 14 comes into contact with the front surface 68 of the lock portion 66 to restrict movement, so that the operating knob 14 cannot move to the first pushing position.

As shown in FIG. 5B, at the time of ignition, the operation knob 14 is pushed from the standby position to the first pushing position by the pushing operation. When the operation knob 14 is in the first pushing position, the lock portion 66 is located on the side of the operation knob 14 in the front-rear direction. Therefore, even if the user tries to move the lock member 60 from the release position to the lock position, the lock portion 66 comes into contact with the side surface of the operation knob 14 and the movement is restricted. The child lock does not work because the lock portion 66 cannot move to the lock position.

As shown in FIG. 9A, when the user stops the pushing operation and releases the operation knob 14, the operation knob 14 moves from the first pushing position to the operating position as shown by the arrow M2. As shown in FIG. 5C, when the operation knob 14 is in the operation position, the lock portion 66 is located on the side of the medium heat guide 90 in the front-rear direction. Therefore, when the operation knob 14 is in the operation position, as shown in FIG. 9B, even if the user tries to move the lock member 60 from the release position to the lock position, the lock portion 66 is on the side surface of the medium heat guide 90. The movement is restricted by contact. In FIG. 9B, a two-dot chain line shows how the position of the lock portion 66 in the front-rear direction and the position of the inclined portion 96 of the medium heat guide 90 in the front-rear direction overlap. The child lock does not work because the lock portion 66 cannot move to the lock position. The user can adjust the thermal power of the left burner 5 by rotating the operation knob 14.

As shown in FIG. 5D, when the fire is extinguished, the operation knob 14 is pushed from the operation position to the second push position by the push operation. When the operation knob 14 is in the second pushing position, the lock portion 66 is located on the side of the operation knob 14 in the front-rear direction. Therefore, when the operation knob 14 is in the second pushing position, even if the user tries to move the lock member 60 from the release position to the lock position, the lock portion 66 comes into contact with the side surface of the operation knob 14 and the movement is restricted. The child lock does not work because the lock portion 66 cannot move to the lock position. When the user stops the pushing operation and releases the operation knob 14, the operation knob 14 moves from the second pushing position to the standby position. When the operation knob 14 moves to the standby position, the user can operate the lever 62 to operate the child lock as described above.

By the way, at the time of ignition, after the operation knob 14 is pushed from the standby position to the first push position by the pushing operation, the operation knob 14 is moved from the first push position to the operation position by the urging force of the spring 42, and the operation knob 14 is in the standby position. Pass through. Further, when the fire is extinguished, the operation knob 14 passes through the standby position in the process of moving the operation knob 14 from the operation position to the second push position by the push operation. As shown in FIG. 5A, when the operation knob 14 passes the standby position, the lock portion 66 is located in the gap G between the operation knob 14 and the medium heat guide 90 in the front-rear direction. Therefore, as shown in FIG. 10A, when the operation knob 14 passes through the standby position and the lever 62 of the lock member 60 is operated due to an erroneous operation or mischief, the lock member 60 is indicated by an arrow M3. , You can move from the release position to the lock position. Since the lock portion 66 enters the gap G, it is temporarily impossible to push the operation knob 14 to the second pushing position, especially when the fire is extinguished.

In this case, as shown in FIG. 10B, at the time of ignition, as shown by the arrow M4, the medium heat guide 90 tries to move forward together with the operation knob 14 by the urging force of the spring 42. Further, when the fire is extinguished, the user cancels the pushing operation of the operation knob 14, so that the medium heat guide 90 is urged by the spring 42 and together with the operation knob 14 as shown by the arrow M4, as in the case of ignition. Try to move forward. As the medium heat guide 90 moves forward, the inclined surface 97 of the inclined portion 96 of the medium heat guide 90 comes into contact with the inclined surface 67 of the lock portion 66 of the lock member 60. The lock portion 66 is as shown by an arrow M5 due to the component force generated by the medium heat guide 90 pressing forward on the inclined surface 97 facing diagonally downward to the front left and diagonally upward to the rear right. , Pressed to the left. As a result, the lock member 60 moves from the lock position to the release position, so that the child lock is released and the user can perform the ignition operation or the fire extinguishing operation again.

The lock member 60 may be loaded when moving in the left-right direction in order to suppress an operation due to mischief. In this case, the lock member 60 may not move to the left only by the component force of the urging force of the spring 42. However, since the component force of the urging force of the spring 42 applies a pressing force that moves from the lock position to the release position to the lock member 60, the load applied to the lock member 60 is reduced. Therefore, the user can operate the lever 62 of the lock member 60 with a lighter load, easily release the child lock, and perform the ignition operation or the fire extinguishing operation again.

In the above description, the operation of the lock member 60 according to the position of the operation knob 14 has been described, but the lock member 60 operates in the same manner according to the positions of the operation knobs 11 to 13. In particular, the lock portion 66 that regulates the pushing operation with respect to the operation knob 13 and the lock portion 66 that regulates the pushing operation with respect to the operation knob 14 are provided as a set in one lock member 60. Therefore, in order for the two locking portions 66 to enter the corresponding gaps G, the operation knob 13 and the operation knob 14 must both be located in the standby positions. Therefore, when one of the operation knobs is in the operation position, for example, the lock member 60 cannot move to the lock position even if an erroneous operation or mischief is performed in the process of pushing the other operation knob.

As described above, when the burner is ignited, the operation knob 14 is pushed from the standby position to the first push position by the push operation, and then moves to the operation position via the standby position. When the burner is extinguished, the operation knob 14 is pushed from the operation position to the second push position via the standby position by the push operation, and then moves to the standby position. When passing through the standby position, the lock portion 66 may be inserted into the gap G of the operation portion 21 by the operation of the lock member 60. The operation knob 14 is urged forward by the spring 42, and the medium heat guide 90 presses the lock portion 66. The lock portion 66 has an inclined surface 67 on the rear surface. When the medium heat guide 90 presses the inclined surface 67 forward, the stress that moves the lock member 60 toward the release position acts on the lock portion 66 due to the component force. As a result, the lock member 60 can be easily moved from the lock position to the release position, so that the lock portion 66 can be separated from the gap G and the operation knob 14 can be moved from the locked state. Therefore, even if the lock portion 66 is inserted into the gap G by an erroneous operation and the operation portion 21 is locked, the gas stove 1 can be easily unlocked. Further, the lock member 60 may impose a load on the movement in the moving direction so that the operation by, for example, a child's mischief is not easy. In this case, even if the component force of the medium heat guide 90 pressing the inclined surface 67 acts on the lock member 60, the lock member 60 may not move to the release position. However, when the lock member 60 is stressed in the direction toward the release position, the lock member 60 can be easily manually moved from the lock position to the release position, and the lock state can be released.

When the operation knob 14 is in the operation position, the medium heat guide 90 moves in the front-rear direction together with the operation knob 14 and the connecting member 25, and is located between the lock portion 66 and the connecting member 25. That is, the gap G between the operation knob 14 and the medium heat guide 90 is not in the moving direction of the lock portion 66. Therefore, even if the lock member 60 tries to move to the lock position, the lock portion 66 comes into contact with the medium heat guide 90 and cannot approach the connecting member 25, and cannot move into the gap G. Therefore, the gas stove 1 can prevent the lock member 60 from moving to the lock position due to an erroneous operation or the like when the operation knob 14 is in the operation position and the burner is burning.

By providing the inclined surface 97 on the front surface of the medium heat guide 90, the pressing force can be efficiently applied from the medium heat guide 90 to the lock portion 66, and the stress applied to the lock member 60 in the direction toward the release position is further increased. can do. This makes it easier for the lock member 60 to move from the lock position to the release position. Further, even when the lock member 60 is manually moved from the lock position to the release position, the lock member 60 can be moved to the release position with a smaller force.

The lock member 60 includes two lock portions 66, each of which corresponds to a gap G of each of the two fuel supply devices. Therefore, in order for the two lock portions 66 to enter the corresponding gaps G, the operation knobs of the two fuel supply devices need to be located in their respective standby positions. That is, when one of the burners is in use, the operation knob of the fuel supply device corresponding to the burner is in the operation position, and the lock portion 66 cannot be inserted into the gap G, so that the lock member 60 cannot be moved to the lock position. Therefore, the gas stove 1 can reduce the possibility that the lock portion 66 is inserted into the gap G due to an erroneous operation and the operation portion 21 is locked.

The present invention is not limited to the above embodiment, and various modifications can be made. Although the medium heat guide 90 has been described as an example of the overhanging portion according to the present invention, the overhanging portion is not limited to the medium heat guide 90. For example, in the case of a fuel supply device for a grill burner, a member that changes to medium heat at the time of ignition is unnecessary. Therefore, it may be a member that is simply provided so as to project around the shaft portion and forms a gap G between the shaft portion and the operation knob 12.

The inclined surface 97 of the medium heat guide 90 may not be provided. Alternatively, the inclined surface 67 of the lock member 60 may not be provided. Either the inclined surface 97 or the inclined surface 67 may be provided. The lock member 60 includes two sets of lock portions 66, but only one set may be provided, and the child locks of the operation knobs 11 to 14 may function independently. When the operation knob 14 moves from the first push-in position to the operation position, or when it moves from the operation position to the second push-in position, the urging force applied to the operation knob 14 is the urging force applied by the spring 42 of the slider 40. , Other urging forces such as springs may also be applied.

The lever 62 of the lock member 60 projects forward from the front surface F of the housing 2 through the elongated hole 88 of the decorative panel 80, but the present invention is not limited to this, and the tip end portion is located behind the front surface F, for example. It may be in the slotted hole 88. Further, the lever 62 may be operated at any part such as the front side, the top surface side, the side surface side, and the bottom surface side of the housing 2, the panel device 50, the decorative panel 80, the top plate 3, and the like. Further, the lever 62 may be configured to be concealed when not operated. For example, the tip of the lever 62 is bent downward so that the lever 62 can be operated on the bottom surface of the decorative panel 80. In this case, the lever 62 can be operated when the operation panel (not shown) provided in the lower portion 51 of the panel main body 50 is opened for operation, and when the operation panel is closed (accommodated in the lower portion 51). In the case), the lever 62 can be covered from below with an operation panel. If a recess is formed on the bottom surface of the decorative panel 80 and the tip of the lever 62 is arranged in the recess, it is possible to prevent the lever 62 from interfering with the opening and closing of the operation panel.

In the above description, the right burner 4, the left burner 5, the back burner 6, and the grill burner are examples of the "burner" of the present invention. The first gas passage 46 and the second gas passage 19 are examples of the "gas flow path" of the present invention. The main valve 39 is an example of the "opening / closing valve" of the present invention. The needle valve 28 is an example of the "regulatory valve" of the present invention. The springs 42, 43, 47 are examples of the "biasing member" of the present invention. The gas flow path portion 22 is an example of the "valve opening / closing mechanism" of the present invention. The connecting member 25 is an example of the "shaft portion" of the present invention. The medium heat guide 90 is an example of the "overhanging portion" of the present invention. The lever 62 is an example of the “moving portion” of the present invention. The inclined surface 67 is an example of the “missing inclined surface” of the present invention. The inclined surface 97 is an example of the "extruded inclined surface" of the present invention.

1 Gas stove 2 Housing 4 Right burner 5 Left burner 6 Back burner 11-14 Operation knob 19 Second gas passage 20 Fuel supply device 21 Operation unit 22 Gas flow path 24 Push / push mechanism 25 Connecting member 25A Tip 28 Needle valve 39 Main valves 42, 43, 47 Spring 46 First gas passage 60 Lock member 62 Lever 66 Lock part 67 Inclined surface 90 Medium heat guide 97 Inclined surface F Front surface G Gap

Claims (4)

A housing with a burner and
A gas flow path through which the gas supplied to the burner flows, an on-off valve for opening and closing the gas flow path, a control valve for adjusting the flow rate of the gas flowing through the gas flow path, and an opening / closing operation and the adjustment of the on-off valve. A fuel supply device provided with an operation unit for adjusting the valve and arranged at the front portion in the housing, and a fuel supply device.
A lock member that regulates and releases the operation of the operation unit,
It is a gas stove equipped with
The operation unit of the fuel supply device is
The control valve can be operated by a rotation operation, and an operation knob that is urged forward by one or more urging members and
Each time the operation knob is pushed backward from the front surface of the housing, the operation position where the operation knob protrudes with respect to the front surface of the housing and the tip surface of the operation knob are the operation. A mechanism for alternately moving the operation knob between the position and the standby position located closer to the front surface of the housing.
When the pushing operation is performed while the operating knob is in the standby position, the operating knob in a state of being pushed backward from the front surface of the housing is urged forward by the urging member. , Move to the operation position via the standby position,
When the pushing operation is performed while the operating knob is in the operating position, the operating knob in a state of being pushed rearward from the front surface of the housing via the standby position is urged. A push-push mechanism that urges forward with a member and moves it to the standby position,
In conjunction with the push-push mechanism, when the operation knob is in the standby position, the on-off valve keeps the gas flow path closed, and when the operation knob is in the operating position, the on-off valve A valve opening / closing mechanism that keeps the gas flow path open,
With
The operation unit
A shaft portion that extends in the front-rear direction with a diameter smaller than that of the operation knob, holds the operation knob at the tip portion, and moves in the front-rear direction together with the operation knob.
Behind the operation knob, at least a part of the shaft portion in the circumferential direction is provided so as to project radially outward, move in the front-rear direction together with the shaft portion, and form a gap between the shaft portion and the operation knob. Overhanging part and
With
The lock member is
A moving unit that performs an operation of moving the lock member in a moving direction orthogonal to the front-rear direction,
A lock portion that is arranged at the position of the gap when the operation knob is located at the standby position in the front-rear direction and whose size in the front-rear direction is smaller than the size of the gap.
With
When the operation knob is in the standby position, it is possible to move from the release position on one side in the moving direction to the lock position on the other side in the moving direction by operating the moving unit.
The lock portion is
On the rear surface, the side near the shaft portion has a relief inclined surface located in front of the far side.
When the lock member is located at the lock position, it is in a state of approaching the shaft portion, being located radially inside the shaft portion with respect to the overhanging portion, and entering the gap.
When the lock member is located at the release position, it is characterized in that it is separated from the shaft portion and is located radially outside the shaft portion from the overhanging portion and is separated from the gap. Gas stove to be. The gas stove according to claim 1, wherein when the operation knob is in the operation position, the overhanging portion is located between the lock portion and the shaft portion in the moving direction. The overhanging portion has an extruded inclined surface on the front surface where the side closer to the shaft portion is located forward than the far side.
The gas stove according to claim 1 or 2, wherein when the lock portion is located in the gap, the extruded inclined surface faces the escape inclined surface. When there are a plurality of the fuel supply devices and they are arranged side by side at the front of the housing,
6. Gas stove.

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