JP2017096579A - Cooking container detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure detection accuracy in a cooking container detection device which has adopted an L-shaped support shaft.SOLUTION: A temperature sensor is incorporated in a contact part pressed down by a cooking container, a lead wire 120 extending from the temperature sensor is inserted inside an L-shaped support shaft 130, and when the contact part moves in the vertical direction, a magnetic body mounted on the lead wire moves in the horizontal direction and switches ON/OFF of a switch. Then, at a curve part 151 of the support shaft, an opening 151a is provided which opens toward one direction orthogonal to a vertical linear part and a horizontal linear part. Thus, a state of cornering of the lead wire at the curve part can be confirmed from the opening, and when there is a defect, the cornering of the lead wire can be corrected by accessing the lead wire from the opening. As a result, it becomes possible to secure detection accuracy by suppressing variation of a movement amount (position of the magnetic body) transmitted to the magnetic body via the lead wire, when the contact part is pressed down.SELECTED DRAWING: Figure 5

Description

  The present invention is a cooking container that is mounted on a cooking utensil such as a stove or a rice cooker, detects that the cooking container is placed above a heat source, and can detect the temperature of the cooking container with a temperature sensor. The present invention relates to a detection device.

  When a cooking container such as a pan is placed on Gotoku on a gas stove, there is a cooking container detection device capable of detecting the cooking container by being pushed down at the bottom of the cooking container and simultaneously detecting the temperature of the cooking container with a temperature sensor Are known. This cooking container detection device with a temperature sensor includes an abutting portion that is brought into contact with a bottom portion of a cooking container placed on Gotoku and pressed down, an urging member that urges the abutting portion upward, and an abutting portion. A lead wire extending from the built-in temperature sensor, a support shaft that supports the contact portion so as to be movable in the vertical direction and the lead wire is movably inserted inside, a magnetic body attached to the lead wire, and a magnetic body And a switch that switches ON / OFF depending on the position of the switch. When the abutting portion is pushed down by the cooking container, the movement is transmitted to the magnetic body through the lead wire, and the switch is turned ON / OFF.

  Moreover, in such a cooking container detection apparatus, when there is a restriction on the height dimension of the gas stove to be mounted, the support shaft is formed in an L shape, and the vertical movement of the abutting portion is made horizontal. It has been proposed to change it and convey it to the magnetic body. For example, in the cooking container detection device of Patent Document 1, a support shaft is formed by joining a curved pipe that is curved at a substantially right angle between a vertical pipe and a horizontal straight pipe.

JP 2007-218524 A

  However, in such a cooking container detection device, a play is provided between the inner surface of the support shaft and the lead wire so that the lead wire easily moves inside the support shaft in accordance with the movement of the contact portion. On the other hand, if there is play, the lead wire may be twisted or twisted when the lead wire is passed through the support shaft, and the path along which the lead wire follows inside the support shaft may vary. In particular, in the curved portion of the L-shaped support shaft, the cornering of the lead wire is likely to vary. Therefore, the amount of movement transmitted to the magnetic body via the lead wire when the abutting portion is pushed down (that is, the position of the magnetic body) ) Greatly affects detection accuracy.

  The present invention has been made in response to the above-described problems in the prior art, and is capable of ensuring detection accuracy by suppressing variations in lead wire cornering at the curved portion of the L-shaped support shaft. The object is to provide a container detection device.

In order to solve the above-described problems, the cooking container detection device of the present invention employs the following configuration. That is,
In the cooking container detection device capable of detecting that the cooking container is placed above the heat source of the cooking utensil and detecting the temperature of the cooking container with a temperature sensor,
An abutting portion that is pressed against the bottom of the cooking vessel placed above the heat source;
A biasing member that biases the abutting portion upward;
A lead wire extending from the temperature sensor built in the contact portion;
A support shaft that supports the abutting portion so as to be movable in the vertical direction, and the lead wire is movably inserted therein.
A magnetic body attached to the lead wire;
A switch that switches between an off state and an on state according to the position of the magnetic body,
The support shaft has a curved portion between a vertical linear portion that is arranged in the vertical direction and to which the contact portion is attached, and a horizontal linear portion that is arranged in the horizontal direction and in which the magnetic body can move inside. It is formed in an L shape,
The curved portion is provided with an opening that opens toward one of the directions orthogonal to the vertical straight portion and the horizontal straight portion.

  In such a cooking container detection device of the present invention, the state of cornering of the lead wire in the curved portion of the support shaft can be confirmed from the opening. If there is a problem in cornering due to twisting or bending of the lead wire, it is possible to correct the cornering of the lead wire by accessing the lead wire from the opening. Thus, by making the cornering of the lead wire uniform by correction, it is possible to suppress variations in the amount of movement (position of the magnetic material) transmitted to the magnetic material via the lead wire when the contact portion is pushed down. As a result, it is possible to ensure detection accuracy in the cooking container detection device that employs a substantially L-shaped support shaft.

  In addition, by correcting the lead wire directly from the opening, the lead wire can be corrected more easily and accurately than when the lead wire is pulled from the open end side of the horizontal linear portion, and damage to the lead wire is suppressed. Can do.

  You may provide the opening part of the cooking vessel detection apparatus of this invention mentioned above ranging on the axis line of a horizontal straight line part from the axis line of an up-and-down straight line part.

  If the magnetic body is attached to the lead wire before inserting the lead wire into the support shaft, even if the outer diameter of the magnetic body is smaller than the inner diameter of the support shaft, depending on the relationship between the length of the magnetic body and the curvature of the curved portion, A magnetic body may be caught in the curved portion, and the lead wire may not be inserted through the support shaft. Even in this case, if the opening is provided from the axis of the vertical straight line to the axis of the horizontal straight line, the lead wire attached with the magnetic material can be pulled out from the vertical straight line side of the opening. . Then, by returning the lead wire to the horizontal linear portion side of the opening, the lead wire can be inserted into the support shaft without passing the magnetic body through the curved portion.

It is sectional drawing which showed the structure of the gas stove 1 carrying the cooking container detection apparatus 100 of a present Example. It is sectional drawing which showed the internal structure of the contact part 110 of a present Example. It is sectional drawing which showed the internal structure of the detection unit 150 of a present Example. FIG. 6 is an explanatory diagram showing an operation of detecting the vertical movement of the contact portion 110 by the detection unit 150. It is explanatory drawing which showed the structure of the support shaft 130 of a present Example. It is explanatory drawing which showed the structure of the cooking container detection apparatus 100 of a prior art example. It is explanatory drawing which showed the reason which can attach the magnetic body 121 to the lead wire 120 previously with the cooking container detection apparatus 100 of a present Example. It is the perspective view which showed the structure of the cooking container detection apparatus 100 of the modification.

  FIG. 1 is a cross-sectional view showing the structure of a gas stove 1 equipped with a cooking container detection device 100 of the present embodiment. The gas stove 1 includes a top plate 2 provided so as to cover the upper surface of a stove body (not shown), a stove burner 10 installed in the stove body with an upper portion protruding from a through hole 3 formed in the top plate 2, and a stove In order to place a cooking container such as a pan above the burner 10, there are provided the virtues 4 installed on the top surface of the top plate 2, and the cooking container detection device 100 for detecting that the cooking containers are placed on the virtues 4. Yes. The stove burner 10 of this embodiment corresponds to the “heat source” of the present invention.

  The stove burner 10 has a burner body 11 having an annular mixing chamber 11a formed therein, a mixing tube 12 extending from the burner body 11 in communication with the mixing chamber 11a, and an upper opening of the mixing chamber 11a. An annular burner head 13 placed on the burner body 11 so as to cover, an annular burner cover 14 attached above the burner head 13 and the like are provided.

  When the fuel gas is injected toward the upstream opening 12a of the mixing pipe 12 extending from the burner body 11, the fuel gas flows into the mixing pipe 12 while sucking the primary air for combustion. Then, the fuel gas passing through the mixing pipe 12 and the primary air are mixed, and the mixed gas is supplied to the mixing chamber 11a.

  A plurality of grooves (flame grooves) are formed radially with respect to the center of the burner head 13 on the lower surface of the outer peripheral wall of the burner head 13 (the surface on which the burner body 11 is placed). When placed on the burner body 11, a plurality of flame openings 13 a communicating with the mixing chamber 11 a are formed by the plurality of flame opening grooves and the upper surface of the burner body 11. The mixed gas supplied to the mixing chamber 11a is ejected from the plurality of flame ports 13a, and combustion of the mixed gas is started when a spark is blown by a spark plug (not shown). In addition, a supply passage 13h for secondary air necessary for the combustion of the mixed gas is formed in the center of the burner head 13. The burner cover 14 plays a role of preventing the boiled juice from being applied to the burner head 13 when spilled from a cooking container placed on the Gotoku 4.

  The cooking container detection device 100 is inserted into the supply passage 13h of the burner head 13. The cooking container detection device 100 according to the present embodiment has a function of detecting not only the cooking container but also the temperature of the cooking container, and the contact portion 110 having a built-in temperature sensor is provided at the central opening 14a of the burner cover 14. Projecting upward from Although the structure of the contact part 110 will be described later with reference to another drawing, when the cooking container is placed on the virtues 4, the contact part 110 contacts the bottom surface of the cooking container and is pushed down. The contact portion 110 is attached to an upper portion of a support shaft 130 fixed in the stove body of the gas stove 1, and is supported so as to be movable in the vertical direction.

  A lead wire 120 extending from a temperature sensor built in the contact portion 110 is inserted inside the support shaft 130, and the temperature sensor and the controller 170 are electrically connected via the lead wire 120. Yes.

  The support shaft 130 of the present embodiment is inserted in the supply passage 13h in the vertical direction, and a linear upper and lower pipe 140 to which the contact portion 110 is attached at the upper portion, and detection for detecting the movement of the contact portion 110. It is formed by joining the unit 150. Although the structure of the detection unit 150 will be described later with reference to another drawing, the detection unit 150 of the present embodiment has a straight pipe-shaped horizontal straight portion 153 arranged in the horizontal direction, and the horizontal straight portion 153 in the vertical direction. A curved portion 151 that is curved so as to communicate with the upper and lower pipes 140 is integrally formed. Note that the upper and lower pipes 140 of this embodiment correspond to the “upper and lower straight portions” of the present invention.

  A fixing screw 155 passes through the upper end side of the bending portion 151 from the radially outer side to the inner side, and the lower end of the upper and lower pipes 140 is inserted inward from the upper end of the bending portion 151 to tighten the fixing screw 155. A substantially L-shaped support shaft 130 is formed. Thus, by forming the support shaft 130 in a substantially L shape, it is possible to mount the cooking container detection device 100 even when the height dimension of the gas stove 1 is limited.

  FIG. 2 is a cross-sectional view showing the internal structure of the contact portion 110. The abutting portion 110 covers the outside of the holder 111 with a substantially cylindrical holder 111, a substantially disc-shaped heat collecting member 112 attached to the upper end of the holder 111, and a substantially cylindrical shape having a larger diameter than the holder 111. A cover 113 and a temperature sensor 115 attached to the lower surface of the heat collecting member 112 are provided. The temperature sensor 115 of the present embodiment uses a thermistor whose electric resistance changes according to a change in temperature. The temperature sensor 115 detects the temperature transmitted to the lower surface of the heat collecting member 112 in contact with the bottom of the cooking container. be able to.

  As described above, the abutting portion 110 is attached to the upper part of the upper and lower pipes 140, and an annular washer 141 having a smaller diameter than the holder 111 is joined to the upper ends of the upper and lower pipes 140 with a crimping not shown. ing. The upper and lower pipes 140 are inserted inside the holder 111, and a narrow diameter portion 111 a that is smaller in diameter than the washer 141 is formed on the lower end side of the holder 111. The washer 141 does not come out of the holder 111 even if it moves in the axial direction (vertical direction in the figure). The upper and lower pipes 140 are made of a metal material such as a stainless steel material because the temperature of the upper and lower pipes 140 is increased by the heat of the stove burner 10 and the strength to support the contact portion 110 is required.

  In addition, the coil spring 114 is accommodated in the holder 111 in a compressed state between the heat collecting member 112 and the washer 141, and the coil spring 114 urges the contact portion 110 upward. When the cooking container is placed on Gotoku 4, the contact portion 110 is pushed down against the biasing force of the coil spring 114. The coil spring 114 of this embodiment corresponds to the “biasing member” of the present invention.

  Furthermore, the lead wire 120 welded to the two terminals 116 of the temperature sensor 115 is inserted inside the coil spring 114 and inside the upper and lower pipes 140 (support shaft 130), and interlocks with the vertical movement of the contact portion 110. Thus, the lead wire 120 is movable in the support shaft 130.

  FIG. 3 is a cross-sectional view showing the internal structure of the detection unit 150 of this embodiment. In the figure, the state where the detection unit 150 of the cooking container detection device 100 installed in the gas stove 1 is viewed from above is shown, and the horizontal straight portion 153 is mainly shown. As shown in the figure, the detection unit 150 includes a substantially rectangular parallelepiped permanent magnet 156, a switch module 158 with a built-in reed switch 157, and the like, and a lead wire 159 extending from the reed switch 157 is electrically connected to the control unit 170. It is connected. In the detection unit 150 formed using a resin material such as polyphenylene sulfide (PPS) or syndiotactic polystyrene (SPS), a lead wire 120 inserted through a horizontal straight portion 153 in the shape of a straight pipe is sandwiched therebetween, A magnet mounting portion 153a into which the permanent magnet 156 is fitted and a switch mounting portion 153b into which the switch module 158 is fitted are integrally formed.

  In addition, a substantially cylindrical magnetic body 121 formed of a magnetic material (for example, stainless steel material SUS430) is attached to the outer periphery of the lead wire 120 by caulking or the like. When the contact portion 110 moves in the vertical direction, the movement is transmitted to the magnetic body 121 via the lead wire 120, so that the magnetic body 121 moves in the horizontal linear portion 153. In a state where the abutting portion 110 is not pushed down by the cooking container, the magnetic body 121 is located between the permanent magnet 156 and the reed switch 157 as shown in FIG. The positional relationship between the permanent magnet 156 and the reed switch 157 and the magnetic body 121 can be adjusted by the attachment position of the magnetic body 121 to the lead wire 120 and the insertion amount of the upper and lower pipes 140 above the bending portion 151. It is.

  FIG. 4 is an explanatory diagram showing an operation of detecting the vertical movement of the contact portion 110 by the detection unit 150. In FIG. 4, illustrations of the horizontal linear portion 153 made of a resin material and the exterior of the switch module 158 are omitted. First, FIG. 4A shows a state where the contact portion 110 is not pushed down. In the reed switch 157 built in the switch module 158, two lead pieces 157a made of a ferromagnetic material are opposed to each other via a contact portion 157b having a predetermined overlap and interval, as in a known reed switch. . As described above, when the contact portion 110 is not pushed down, the magnetic body 121 is positioned between the permanent magnet 156 and the reed switch 157, and the magnetism of the permanent magnet 156 is blocked by the magnetic body 121, leading to the lead. It is difficult to reach the switch 157. As a result, the lead piece 157a is not magnetized and the contact portion 157b remains open, so that the reed switch 157 is in the OFF state.

  On the other hand, FIG. 4B shows a state in which the contact portion 110 is pushed down. When the cooking container is placed on the virtues 4 and the abutting part 110 is pushed down, as the lead wire 120 moves in the axial direction of the horizontal straight part 153 as shown by the white arrow in the figure, The magnetic body 121 moves from between the permanent magnet 156 and the reed switch 157. As a result, the magnetism of the permanent magnet 156 can easily reach the reed switch 157, the lead piece 157a is magnetized, the contact portion 157b is closed by the magnetic attractive force, and the reed switch 157 is turned on.

  Further, when the cooking container is removed from the top of Gotoku 4, the magnetic body 121 returns between the permanent magnet 156 and the reed switch 157 as the abutting portion 110 is pushed up by the biasing force of the coil spring 114. The magnetism of the magnet 156 is interrupted and it becomes difficult to reach the reed switch 157. Then, the magnetization of the lead piece 157a disappears, the contact portion 157b is opened by the elastic force of the lead piece 157a, and the reed switch 157 is turned off. In this way, the ON state and the OFF state of the reed switch 157 are switched in conjunction with the vertical movement of the abutting portion 110, so that the cooking container on Gotoku 4 is based on the state of the reed switch 157 (ON or OFF). The presence or absence of can be detected. The reed switch 157 of this embodiment corresponds to the “switch” of the present invention.

  As described above, in the cooking container detection apparatus 100 that transmits the movement of the contact portion 110 to the magnetic body 121 through the lead wire 120 inserted through the support shaft 130, the lead wire is changed according to the movement of the contact portion 110. Since 120 is required to move lightly, it is necessary to provide a space between the inner surface of the support shaft 130 and the lead wire 120. On the other hand, if there is such play, the lead wire 120 twists or twists when the lead wire 120 is passed through the support shaft 130, thereby causing variations in the path that the lead wire 120 follows inside the support shaft 130 (individual difference). May occur. Particularly, in the curved portion 151 of the substantially L-shaped support shaft 130, the cornering of the lead wire 120 is likely to vary, and the amount of movement transmitted to the magnetic body 121 via the lead wire 120 when the contact portion 110 is pushed down ( That is, it greatly affects the position of the magnetic body 121). As a result, the ON state and OFF state of the reed switch 157 may not be switched correctly, leading to a decrease in detection accuracy. Therefore, in the cooking container detection device 100 of the present embodiment, the bending portion 151 of the support shaft 130 is configured as follows, so that the cornering variation of the lead wire 120 in the bending portion 151 can be suppressed. Yes.

  FIG. 5 is an explanatory view showing the structure of the support shaft 130 of this embodiment. First, FIG. 5A is a perspective view showing a state where the lead wire 120 is inserted into the support shaft 130. As described above, the support shaft 130 of the present embodiment is configured by joining the detection unit 150 integrally formed with the horizontal linear portion 153 and the curved portion 151 and the upper and lower pipes 140, and the upper and lower pipes 140 and the horizontal linear portion are configured. 153 is formed in a substantially L shape that communicates with the curved portion 151. The bending portion 151 is provided with an opening portion 151 a that opens toward one side (the front side in the drawing) orthogonal to the upper and lower pipes 140 and the horizontal straight line portion 153. In addition, a guide surface 152 is provided in the bending portion 151 to guide the lead wire 120 when the contact portion 110 is pushed down. Note that the distance between the inner surface on the corner side of the curved portion 151 and the guide surface 152 is set wider than the diameter of the lead wire 120.

  Thus, in the cooking container detection apparatus 100 of the present embodiment, by providing the opening 151a in the bending portion 151, it is possible to confirm the cornering state of the lead wire 120 in the bending portion 151 from the opening 151a. If there is a defect in the cornering of the lead wire 120 (for example, the lead wire 120 is twisted or twisted), the lead wire 120 is accessed from the opening 151a to correct the cornering of the lead wire 120. Can do. By correcting the lead wire 120 directly from the opening 151a in this way, the lead wire 120 can be corrected easily and accurately as compared with the case where the lead wire 120 is pulled from the open end side of the horizontal straight portion 153, and the lead wire 120 is damaged. Can be suppressed.

  FIG. 5B shows an example in which the lead wire 120 is corrected from the opening 151a. In the drawing, the lead wire 120 in the curved portion 151 is viewed from the opening 151a. As shown in the drawing, a guide surface 152 is provided in the curved portion 151 of the present embodiment on the protruding corner side from the lead wire 120, and the lead wire 120 extends along the guide surface 152 while pushing down the contact portion 110. Thus, the cornering of the lead wire 120 is corrected. In this way, when the contact portion 110 is pushed down, the lead wire 120 slides with respect to the guide surface 152, so that the downward movement of the contact portion 110 becomes a horizontal movement (leftward in the figure). Is transmitted to the magnetic body 121.

  In this way, the cornering of the lead wire 120 in the curved portion 151 is made uniform by correction, so that the amount of movement (position of the magnetic body 121) transmitted to the magnetic body 121 via the lead wire 120 when the abutting portion 110 is pushed down. Variations can be suppressed. As a result, it is possible to ensure detection accuracy in the cooking container detection device 100 employing the substantially L-shaped support shaft 130.

  In addition, in the support shaft 130 of the present embodiment, the guide surface 152 is provided separately from the inner surface on the protruding corner side of the bending portion 151, but the curvature of the protruding corner side of the bending portion 151 is changed, and the protruding corner side is changed. The inner surface may be the guide surface 152.

  Further, in the support shaft 130 of the present embodiment, the opening 151 a is provided in the entire area of the curved portion 151 extending from the axis of the upper and lower pipes 140 to the axis of the horizontal straight portion 153. However, the opening 151a does not necessarily have to be provided over the entire area of the bending portion 151, and the opening 151a has a size capable of confirming or correcting the cornering of the lead wire 120 in the bending portion 151. Just keep it. However, if the opening 151a is provided from the axis of the upper and lower pipes 140 to the axis of the horizontal straight line 153 as in the present embodiment, the magnetic body 121 is inserted before the lead wire 120 is inserted into the support shaft 130. It can be attached to the lead wire 120. Hereinafter, this point will be described, but as a comparison, a conventional cooking container detection device 100 in which the magnetic body 121 cannot be attached to the lead wire 120 first will be briefly described.

  FIG. 6 is an explanatory view showing the structure of a conventional cooking container detection apparatus 100. First, FIG. 6A shows a state in which the support shaft 130 of the conventional cooking container detection device 100 is disassembled. In the illustrated cooking container detection apparatus 100, a curved pipe that is curved at a substantially right angle between a straight vertical pipe 140 arranged in the vertical direction and a straight horizontal pipe 143 arranged in the horizontal direction. By joining 142, a substantially L-shaped support shaft 130 is formed. The permanent magnet 156 and the reed switch 157 are attached to the outer periphery of the horizontal pipe 143.

  In such a conventional cooking container detection device 100, if the magnetic body 121 is attached to the lead wire 120 before the lead wire 120 is inserted through the support shaft 130, the outer diameter of the magnetic body 121 is the inner diameter of the upper and lower pipes 140. If smaller, the lead wire 120 can be inserted into the upper and lower pipes 140 as shown in FIG.

  Subsequently, when trying to insert the lead wire 120 into the bending pipe 142, even if the outer diameter of the magnetic body 121 is smaller than the inner diameter of the bending pipe 142, the length of the magnetic body 121 and the curvature of the bending pipe 142 are high. Depending on the relationship, the magnetic body 121 may be caught in the curved pipe 142 as shown in the cross section of FIG. 6B, and the lead wire 120 may not be inserted into the curved pipe 142.

  In such a case, since the magnetic body 121 can only be attached to the lead wire 120 after the lead wire 120 is inserted into the curved pipe 142, the conventional cooking container detection apparatus 100 uses the curved pipe 142 and the horizontal pipe 143. It was necessary to join the curved pipe 142 and the horizontal pipe 143 after the lead wire 120 with the magnetic body 121 attached was inserted into the horizontal pipe 143 separately. In addition, since the outer diameter of the magnetic body 121 is smaller than the inner diameter of the horizontal pipe 143, the lead wire 120 to which the magnetic body 121 is attached can be inserted into the horizontal pipe 143.

  On the other hand, FIG. 7 is explanatory drawing which showed the reason why the magnetic body 121 can be previously attached to the lead wire 120 in the cooking container detection apparatus 100 of the present embodiment. As described above, in the cooking container detection device 100 of the present embodiment, the opening 151a of the bending portion 151 is provided from the axis of the upper and lower pipes 140 to the axis of the horizontal straight portion 153, and the magnetic body 121 is attached. When inserting the lead wire 120 into the bending portion 151, the lead wire 120 can be pulled out from the upper and lower pipes 140 side of the opening portion 151a as shown in the drawing. Then, by returning the lead wire 120 to the horizontal straight portion 153 side of the opening 151a, the lead wire 120 is not passed through the curved portion 151 (between the inner surface on the corner side and the guide surface 152). 120 can be inserted through the support shaft 130 (the upper and lower pipes 140, the bending portion 151, and the horizontal straight portion 153).

  And by attaching the magnetic body 121 to the lead wire 120 before inserting the lead wire 120 into the support shaft 130 in this way, in the cooking container detection device 100 of the present embodiment, the detection unit 150 has the bending portion 151 and The horizontal straight portion 153 can be formed integrally. As a result, compared to the case where the curved pipe 142 and the horizontal pipe 143 need to be separately provided as in the conventional cooking container detection apparatus 100 (see FIG. 6), the number of parts of the cooking container detection apparatus 100 is reduced. It is possible to reduce the number and simplify the assembly.

  The cooking container detection apparatus 100 according to the present embodiment described above includes the following modifications. In the following, modifications will be described focusing on differences from the above-described embodiment. In the description of the modified example, the same components as those in the above-described embodiment are denoted by the same reference numerals and the description thereof is omitted.

  FIG. 8 is a perspective view showing the structure of a cooking container detection device 100 according to a modification. In FIG. 8, illustration of the contact portion 110 is omitted. In the support shaft 130 of the above-described embodiment, the guide surface 152 is integrally formed in the curved portion 151 of the detection unit 150 made of resin. On the other hand, in the support shaft 130 according to the modified example, a guide surface is formed by fitting the guide plate 160 formed separately from the detection unit 150 into the curved portion 151 from the opening 151a side. It has become.

  The illustrated guide plate 160 is formed in a curved shape with a sheet metal using a stainless steel plate. The guide plate 160 is provided with a restricting portion 160a that restricts the path of the lead wire 120 from the opening 151a side. Further, the curved portion 151 of the detection unit 150 is open on the lower surface side in addition to the opening portion 151a, and an engagement portion 151b for fixing the guide plate 160 by engaging with the guide plate 160 is provided inside. Yes. The guide plate 160 may be formed in a flat plate shape using a resin material and may be fitted into the bending portion 151 while being bent.

  In the cooking container detection apparatus 100 of such a modification, when the lead wire 120 is inserted into the curved portion 151, the lead wire 120 is once pulled out from the opened lower surface side and inserted into the horizontal straight portion 153. Is possible. Thus, the guide plate 160 may be fitted from the opening 151a side with the lead wire 120 passing through the curved portion 151. Therefore, the magnetic body 121 is attached to the lead wire 120 before the lead wire 120 is inserted into the support shaft 130. It is possible to improve the workability of inserting the lead wire 120 through the support shaft 130. Then, by correcting the cornering of the lead wire 120 so as to follow the fitted guide plate 160, the amount of movement (magnetic material) transmitted to the magnetic body 121 via the lead wire 120 when the contact portion 110 is pushed down. 121) can be suppressed.

  The cooking container detection device 100 according to this embodiment and the modification has been described above. However, the present invention is not limited to the above-described embodiment and modification, and may be implemented in various modes without departing from the scope of the invention. Is possible.

  For example, in the above-described embodiment, the reed switch 157 is used as a switch that switches between the ON state and the OFF state according to the position of the magnetic body 121. However, the present invention is not limited to this, and a switch that switches between an ON state and an OFF state by changing the value of the coil inductance as the magnetic body 121 moves inside the coil may be used. Alternatively, a change in magnetism corresponding to the position of the magnetic body 121 may be detected by using a Hall sensor that uses the Hall effect or a magnetic sensor represented by an MR element that uses the magnetoresistive effect.

  In the above-described embodiment, the cooking container detection device 100 that detects that a pan is placed on the Gotoku 4 has been described by taking the gas stove 1 as an example of the cooking utensil. However, the cooking container detection device 100 is mounted. The cooking utensil is not limited to the gas stove 1. For example, the present invention can be suitably applied also when the cooking container detection device 100 is mounted on a rice cooker and it is detected that a rice cooking pot as a cooking container is installed above a burner as a heat source. .

1 ... gas stove, 2 ... top plate, 3 ... through hole,
4 ... Five virtues, 10 ... Stove burner, 11 ... Burner body,
11a ... mixing chamber, 12 ... mixing tube, 13 ... burner head,
13a ... Flame port, 13h ... Supply passage, 14 ... Burner cover,
DESCRIPTION OF SYMBOLS 100 ... Cooking container detection apparatus, 110 ... Contact part, 111 ... Holder,
112 ... Heat collecting member, 113 ... Cover, 114 ... Coil spring,
115 ... Temperature sensor, 120 ... Lead wire, 121 ... Magnetic material,
130 ... support shaft 140 ... upper and lower pipes 141 ... washer,
142 ... curved pipe, 143 ... horizontal pipe, 150 ... detection unit,
151 ... curved portion, 151a ... opening, 151b ... engaging portion,
152 ... Guide surface, 153 ... Horizontal linear part, 153a ... Magnet mounting part,
153b: Switch mounting portion, 155: Fixing screw, 156: Permanent magnet,
157 ... Reed switch, 157a ... Lead piece, 157b ... Contact part,
158 ... Switch module, 159 ... leader, 160 ... guide plate,
160a ... restriction part, 170 ... control part.

Claims (2)

In the cooking container detection device capable of detecting that the cooking container is placed above the heat source of the cooking utensil and detecting the temperature of the cooking container with a temperature sensor,
An abutting portion that is pressed against the bottom of the cooking vessel placed above the heat source;
A biasing member that biases the abutting portion upward;
A lead wire extending from the temperature sensor built in the contact portion;
A support shaft that supports the abutting portion so as to be movable in the vertical direction, and the lead wire is movably inserted therein.
A magnetic body attached to the lead wire;
A switch that switches between an off state and an on state according to the position of the magnetic body,
The support shaft has a curved portion between a vertical linear portion that is arranged in the vertical direction and to which the contact portion is attached, and a horizontal linear portion that is arranged in the horizontal direction and in which the magnetic body can move inside. It is formed in an L shape,
The cooking container detection device, wherein the curved portion is provided with an opening that opens toward one of the directions perpendicular to the vertical straight portion and the horizontal straight portion. In the cooking container detection device according to claim 1,
The said opening part is provided ranging on the axis line of the said horizontal linear part from the axis line of the said up-and-down linear part. The cooking container detection apparatus characterized by the above-mentioned.

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