JP2018128240A - Gas cooker tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly perform push-in operation of an operation member, even in a gas cooker tool including a push switch mechanism using two cams.SOLUTION: A cam provided in a cam mechanism part 21 of a bush switch mechanism 20 comprises a front cam 25 connected to an ignition/extinction button 15, and a rear cam 26 configured to move a valve shaft 75 forward/backward. In the cam mechanism part 21, provided are a front coil spring 70 configured to energize the front cam 25 to the ignition/extinction button 15 side, and a rear coil spring 71 configured to energize the rear cam 26 to the ignition/extinction button 15 side. On external surfaces of the front cam 25 and rear cam 26, a plurality of guide projections 58, 67 is provided along a front-back direction.SELECTED DRAWING: Figure 3

Description

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

  In a gas cooker such as a stove, a push switch that includes a gas burner as a heating means for an object to be cooked, and that enables the gas burner to be extinguished by a push operation of a fire extinguishing button (operation member) provided on the front surface of the container. A device provided with a mechanism is known. For example, as disclosed in Patent Document 1, this push switch mechanism is configured such that a valve shaft provided with a valve body that opens and closes a gas flow path by repeatedly pressing a fire extinguishing button is moved in an axial direction via a heart cam mechanism. It is intended to move forward and backward. In particular, in the stove disclosed in Patent Document 1, as a heart cam mechanism, two front and rear cams (slider and relay slider) each having a cam groove for locking a locking pin are accommodated in a case and attached to the point of the fire extinguishing button by a coil spring. In the combustion position, the point extinguishing button is held at the protruding position from the operation panel by the slider held on the front side, and the valve shaft is held at the valve opening position by the relay slider.

JP 2017-3164 A

  In the above-mentioned conventional stove, the pushing force applied to the point-extinguishing button is transmitted to the valve shaft via two cams to open and close the gas flow path, so that the pushing force is applied to the point-extinguishing button from an oblique direction. As a result, the force along the front-rear direction may not be transmitted to the cam. In this case, the cams may be squeezed in the case to increase the sliding resistance, and the push-in operation cannot be performed smoothly.

  Accordingly, an object of the present invention is to provide a gas cooking utensil that can smoothly push the operating member and maintain a good feeling of use even if it has a push switch mechanism using two cams. It is what.

In order to achieve the above-mentioned object, the invention according to claim 1 is a rear flow path including a front operation member and a valve shaft for opening and closing a gas flow path to the burner in a body including the burner. A cam that can move back and forth between the opening / closing part and the operation member and the flow path opening / closing part is provided, and the front and rear positions of the cam are changed by repeatedly pushing the operation member to close the valve shaft and the gas flow path. A cam mechanism that moves back and forth between a fire extinguishing position and a combustion position that opens the gas flow path, and a rear side that moves the valve shaft back and forth, and a first cam connected to the operating member. And a second urging member for urging the second cam toward the operation member side, and a second urging member for urging the second cam toward the operation member side. Provided with a gas cooking utensil housed in a case from which the operating member protrudes. I,
A plurality of guide projections extending in the front-rear direction are provided on the outer surface of each cam and / or the inner surface of the case.
According to a second aspect of the present invention, in the configuration of the first aspect, the guide protrusion is provided on a different sliding surface with respect to the inner surface of the case on the outer surface of each cam.

According to the first aspect of the present invention, a plurality of guide protrusions along the front-rear direction are provided on the outer surface of each cam and / or the inner surface of the case, so that a pressing force is applied to the operation member from an oblique direction. Even if the force along the front-rear direction is not transmitted to the first and second cams, the cams are not twisted in the case. Therefore, even if a push switch mechanism using two cams is provided, the operation member can be pushed in smoothly, and a good usability can be maintained.
According to the second aspect of the present invention, in addition to the effect of the first aspect, the guide protrusions are provided on the different sliding surfaces with respect to the inner surface of the case on the outer surface of each cam. Is effectively obtained.

It is a perspective view of a built-in stove. It is a perspective view of a push switch mechanism. It is a disassembled perspective view of a push switch mechanism. (A) is a rear view of the front cam, and (B) is a rear view of the rear cam. It is explanatory drawing of the push switch mechanism of a fire extinguishing position, (A) shows a side surface, (B) shows a bottom face, respectively. It is explanatory drawing of the push switch mechanism of an ignition cutoff position, (A) shows a side surface, (B) shows a bottom face, respectively. It is explanatory drawing of the push switch mechanism of a combustion position, (A) shows a side surface, (B) shows a bottom face, respectively. It is explanatory drawing of the push switch mechanism of a fire extinguishing push-off position, (A) shows a side surface, (B) shows a bottom face, respectively.

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

  A grill door 14 is provided at the center of the front panel 7, and on the left and right sides of the front panel 7, the fire extinguishing buttons 15, 15.. An openable operation panel 16 for performing the operation is provided. The point-extinguishing button 15 is provided at the front end of the push switch mechanism housed in the body 2, and the point-extinguishing operation of each burner is possible by repeating the pressing operation of the point-extinguishing button 15. Hereinafter, this push switch mechanism will be described in detail.

  2 is a perspective view of the push switch mechanism 20, and FIG. 3 is an exploded perspective view thereof. The push switch mechanism 20 includes a cam mechanism portion 21 and a flow path opening / closing portion 22 attached to the rear of the cam mechanism portion 21. A gas pipe (not shown) in the container body 2 is connected to the upstream side of the flow path opening / closing unit 22, and a gas amount adjusting unit 23 is connected to the downstream side, and the fire extinguishing button 15 is connected to the front end of the cam mechanism unit 21. Is provided. The push switch mechanism 20 is installed in the front-rear direction with the cam mechanism portion 21 in the lower direction in the container 2, but for convenience of description of the cam mechanism portion 21, the cam mechanism portion is shown in FIGS. 21 is shown on the upper side.

  First, the cam mechanism portion 21 includes a mechanical box 24 and a front cam 25 and a rear cam 26 accommodated in the mechanical box 24. The mechanical box 24 is composed of a box main body 27 having a U-shaped cross section and having an opening on the lower surface and the front surface, and a cover 28 for closing the lower surface of the box main body 27. 29 and the igniter switch 30 are screwed in such a posture that the levers 29a and 30a are respectively downward and facing rearward. A partition plate 31 having a through hole 32 is formed at the center of the box body 27 in the front-rear direction, and a pair of cutout windows 33 are formed on the left and right sides of the box body 27. The locking protrusions 34, 34,... Protrude in the front-rear direction at a predetermined interval. The rear end of the box body 27 is closed by a closing plate 35 that protrudes to the left and right. A through hole 36 is formed at a portion facing the inside of the box body 27, and a ring-shaped protrusion 37 is formed around the hole 36. Yes. A rear pin receiving portion 38 protrudes from the lower rear side of the closing plate 35, and the rear end of the inverted U-shaped rear lever pin 39 is held by the holding spring 40 in the rear pin receiving portion 38. . Therefore, the rear lever pin 39 can swing left and right around the rear end. On the inner side of the front end of the box body 27, stoppers 41, 41 are provided on the left and right.

  The cover 28 has an inverted U-shaped cross section that covers the lower surface of the box body 27 from the lower surface to the left and right side surfaces. The left and right folded portions have square holes 42, 42,. A front pin receiving portion 43 projects from the center of the front end. In the front pin receiving portion 43, the front end of the inverted U-shaped front lever pin 44 is held by a holding spring 45. Therefore, the front lever pin 44 can swing left and right around the front end. Further, the front end of the rear lever pin 39 is inserted into the lower surface of the cover 28, and the arc-shaped rear elongated hole 46 centered on the rear end and the rear end of the front lever pin 44 are inserted into the arc-shaped centered on the front end. The front long hole 47 is formed in the left-right direction.

The front cam 25 is a U-shaped block body whose upper outer shape is fitted to the box body 27, and a connecting rod 50 to which the fire extinguishing button 15 is connected is connected to the front surface in a rotatable and forward direction. A front rod 51 that presses the rear cam 26 protrudes rearward from the rear surface. The left and right side surfaces on the front side of the front cam 25 are formed to have a width of two sides, and locking surfaces 52 and 52 that are locked to the stoppers 41 and 41 of the box body 27 from the rear are formed on the left and right sides of the rear part.
In addition, a plate-like cam plate portion 53 having a front cam groove 54 formed rearward is formed in the lower portion of the front cam 25, and a concave portion 55 whose bottom surface and front surface are open is formed on the front side of the cam plate portion 53. Has been. As shown in FIG. 5, the front cam groove 54 has a heart-shaped front circulation portion 56 whose front end is directed rearward and the left side is longer forward than the right side, and the front circulation portion 56 is rearward from the front end of the front circulation portion 56. It is a bottomed groove comprising a front straight portion 57 extending to the bottom. The rear end of the front lever pin 44 penetrating the front long hole 47 is inserted into and locked in the front cam groove 54 and moves in the front cam groove 54 as the front cam 25 moves forward and backward as will be described later. ing.
Further, on the outer surface of the front cam 25, as shown in FIG. 4 (A), a plurality of guide protrusions 58, 58... Are formed on the U-shaped upper surface and the left and right side surfaces and the lower surface along the cam plate portion 53.・ Is protruding in the front-rear direction.

  The rear cam 26 is also a block body having a U-shaped cross section whose upper outer shape is fitted to the box body 27, and the rear surface presses the valve shaft 75 of the flow path opening / closing portion 22 as shown in FIGS. A rear rod 60 protrudes rearward. A left arm 61 and a right arm 62 project from the left and right side surfaces, respectively. The left arm 61 pushes the lever 29a of the board switch 29 as the rear cam 26 moves backward, and the right arm 62 pushes the lever 30a of the igniter switch 30 as the rear cam 26 moves backward. 61 is formed to be longer rearward than the right arm 62, and the timing for turning on the substrate switch 29 is set earlier than the timing for turning on the igniter switch 30.

Further, a clearance recess 63 into which the cam plate portion 53 of the front cam 25 can enter is formed in the front-rear direction at the lower portion of the rear cam 26, and a rear cam groove 64 is formed in the bottom surface of the clearance recess 63. . The rear cam groove 64 includes a rear circulation part 65 having a heart shape in plan view in which the right side is longer forward than the left side with the pointed end facing rearward, and a rear straight part 66 extending rearward from the pointed end of the rear circulation part 65. It becomes a bottomed groove. The front end of the rear lever pin 39 that passes through the rear elongated hole 46 is inserted and locked into the rear cam groove 64, and moves in the rear cam groove 64 as the rear cam 26 moves back and forth as will be described later. Yes.
4B on the outer surface of the rear cam 26, as shown in FIG. 4B, a plurality of guide protrusions 67, 67,... Are formed on the U-shaped upper surface and the left and right side surfaces excluding the left and right arms 61, 62. Projected in the front-rear direction.

Here, the front cam 25 is accommodated in the box body 27 on the front side of the partition plate 31, and a front coil spring 70 into which the front rod 51 of the front cam 25 is inserted is provided between the front cam 25 and the partition plate 31. . Therefore, the front cam 25 is moved back and forth between a front position where the locking surfaces 52, 52 abut against the stoppers 41, 41 of the box body 27 and a rear position where the rear surface except the cam plate portion 53 abuts the partition plate 31. It becomes movable.
The rear cam 26 is accommodated in the box body 27 at the rear side of the partition plate 31, and a rear rod 60 of the rear cam 26 is inserted between the rear cam 26 and the closing plate 35 of the box body 27. A rear coil spring 71 is provided. The rear coil spring 71 is held with the rear end fitted to the ring-shaped protrusion 37 on the front surface of the closing plate 35. Therefore, the rear cam 26 can move back and forth between a front position where the front surface abuts against the partition plate 31 and a rear position where the rear rod 60 pushes the valve shaft 75 and the rear surface is close to the ring-shaped protrusion 37. .

In this state, the cover 28 is put on the box body 27 to close the lower surface, the rear end of the front lever pin 44 is locked to the front cam groove 54 of the front cam 25 through the front long hole 47, and the front end of the rear lever pin 39 is The rear cam 26 is engaged with the rear cam groove 64 through the rear long hole 46. The front cam 25 and the rear cam 26 are urged forward by a front coil spring 70 and a rear coil spring 71, respectively. As will be described later, the locking position of the front lever pin 44 to the front cam groove 54 and the rear lever pin The front-rear position in the mechanical box 24 is changed according to the locking position of the rear cam groove 64 by 39. At this time, in the front cam 25, guide protrusions 58, 58... Provided on the upper and lower surfaces and the left and right side surfaces which are different sliding surfaces with respect to the inner surface of the mechanical box 24 abut on the inner surface of the mechanical box 24. In the rear cam 26, guide protrusions 67, 67... Provided on the upper surface and the left and right side surfaces which are different sliding surfaces with respect to the inner surface of the mechanical box 24 abut on the inner surface of the mechanical box 24.
The left and right arms 61 and 62 of the rear cam 26 protrude outwardly from the left and right through the cutout windows 33 and 33 of the box body 27, respectively, and the substrate switch 29 and the igniter switch 30 are turned on / off as the rear cam 26 moves forward and backward. It will be turned off.

  The flow path opening / closing section 22 is a cylindrical body having a gas inlet 72 on the lower side and a gas outlet 73 on the upper side, and a gas flow path is formed therein, and the upstream side of the gas flow path is formed at the rear end. A magnet electromagnetic valve 74 that opens and closes is provided, and a valve shaft 75 including a main valve that opens and closes the downstream side of the gas flow path is accommodated in the gas flow path so as to be capable of moving forward and backward. However, the valve shaft 75 is normally biased to a forward position where the main valve is closed by a magnet electromagnetic valve 74 biased forward. A mounting flange 76 from which the valve shaft 75 protrudes is extended at the front end of the flow path opening / closing part 22, and the mounting flange 76 is screwed to the closing plate 35 of the box body 27, so that the through hole 36 of the closing plate 35 is provided. And the opening of the mounting flange 76 communicate coaxially so that the valve shaft 75 can protrude into the box body 27. Reference numeral 77 denotes a packing that seals between the closing plate 35 and the mounting flange 76 at the penetrating portion of the valve shaft 75.

  The gas amount adjusting unit 23 is a cylindrical body that is connected to the gas outlet 73 of the channel opening / closing unit 22 and extends in the front-rear direction in parallel with the channel opening / closing unit 22. A passage and a connection port (not shown) to which a gas pipe (not shown) for supplying fuel gas to the burner is connected downstream are formed. A needle valve 78 that changes the opening area of the gas adjusting channel by moving back and forth in the axial direction is provided in the gas adjusting channel.

The point-extinguishing button 15 has a circular shape when viewed from the front, and is integrally connected to the front end of the intermediate cylinder 80 that is externally mounted on the connecting rod 50 of the front cam 25. At the rear end of the intermediate cylinder 80, an engagement sleeve 82 is integrally packaged in the rotational direction by engaging with a protrusion 81 provided on the outer periphery of the intermediate cylinder 80.
In FIG. 2, 83 is a holding frame fixed to the back side of the front panel 7, and 84 is an adjustment ring that is coaxially and rotatably held by the holding frame 83 outside the point-extinguishing button 15. On the outer periphery of the adjustment ring 84, a spiral groove 86 that extends rearward under the needle valve 78 of the gas amount adjusting unit 23 and engages with a pin (not shown) that protrudes radially from the needle valve 78. The provided linkage piece 85 is provided integrally. The adjustment ring 84 is rotated via the engagement sleeve 82 in accordance with the rotation operation of the fire extinguishing button 15 by the engagement of the engagement sleeve 82 advanced at a combustion position described later. The needle piece 78 can be moved back and forth in the axial direction by moving the connecting piece 85 in an eccentric manner to relatively move the pin in the groove 86.

The operation from ignition to extinguishing in the push switch mechanism 20 of the built-in stove 1 configured as described above will be described with reference to FIGS. In each figure (A), the up and down directions are opposite to those in FIGS. 2 and 3. In each figure (B), the bottom surface is shown, the cover 28 is omitted, and the front long hole 47 and the rear long hole are shown. Only 46 is indicated by a virtual line.
First, in a state where the point fire button 15 is not operated, as shown in FIG. 5, the front cam 25 has the rear end of the front lever pin 44 through the front long hole 47 and the front center of the front circulation portion 56 of the front cam groove 54. By being locked, the front coil spring 70 is slightly rearward (initial position) against the urging force of the front coil spring 70. The rear cam 26 is in a front position where it abuts against the partition plate 31 due to the bias of the rear coil spring 71, and the front end of the rear lever pin 39 is positioned in the rear straight portion 66 of the rear cam groove 64 via the rear long hole 46. ing.

In this state, the point-extinguishing button 15 in which the front cam 25 and the forward / backward movement are integrated has a front surface slightly protruding from the front surface of the body 2 (here, the front surface of the front panel 7 and indicated by a line L) along the line L. In the position. Here, the cam plate portion 53 of the front cam 25 protrudes rearward from the partition plate 31, but the escape cam 63 is formed in the rear cam 26, so that the cam plate portion 53 does not interfere with the rear cam 26. Is superposed on the bottom surface of the relief recess 63.
In this state, the rear rod 60 of the rear cam 26 is spaced forward from the valve shaft 75, so that the valve shaft 75 of the flow path opening / closing portion 22 is in the forward position and the main valve and the magnet electromagnetic valve 74 are The valve is closed (fire extinguishing position). The left and right arms 61 and 62 of the rear cam 26 are also spaced forward from the levers 29 a and 30 a of the board switch 29 and the igniter switch 30.

  When the fire extinguishing button 15 is pushed in from here, as shown in FIG. 6, the front rod 51 of the retracted front cam 25 passes through the through hole 32 of the partition plate 31 and contacts the rear cam 26, and the rear cam 26 is moved to the rear. The coil spring 71 is retracted against the biasing force. Then, the rear rod 60 of the cam 26 after retreating contacts the valve shaft 75 to retract the valve shaft 75, and the retracted valve shaft 75 is pushed in with the magnet electromagnetic valve 74 forcibly opened. Regulated (ignition press-off position). At this time, the rear end of the front lever pin 44 moves in the front circulation portion 56 and is positioned at the left front end thereof, and the front end of the rear lever pin 39 moves in the rear circulation portion 65 and is positioned at the right front end thereof. At the bottom of the front cam groove 54 and the rear cam groove 64, a step portion is formed that restricts the moving direction of the end portions of the front lever pin 44 and the rear lever pin 39 to the right rotation direction in FIG. At the same time, since the front and rear lever pins 44 and 39 are pressed against the bottom side of the cam grooves 54 and 64 by the holding springs 40 and 45, they are guided only in one direction without escaping from the cam grooves 54 and 64.

Further, when the front cam 25 moves backward, the cam plate portion 53 that protrudes rearward slides on the bottom surface of the relief recess 63 of the rear cam groove 64, so that the front cam 25 moves backward via the cam plate portion 53. Guided by the relief recess 63 of the cam 26, it can move smoothly. Further, the cam plate portion 53 does not interfere with the rear cam groove 64.
Further, since guide protrusions 58 and 67 are formed in the front-rear direction on the outer surfaces of the front cam 25 and the rear cam 26, the guide protrusions 58 and 67 slide on the inner surface of the mechanical box 24, so that the front cam 25 And the attitude | position of the front-back direction of the rear cam 26 is maintained. Therefore, the front cam 25 and the rear cam 26 can be smoothly retracted without being twisted in the mechanical box 24.

  At this ignition cutoff position, the main valve is opened together with the magnet electromagnetic valve 74, and the fuel gas is supplied into the gas flow path of the flow path opening / closing section 22. Therefore, the fuel gas is supplied to the burner 10 or the grill burner via the gas amount adjusting unit 23. At the same time, the left arm 61 of the rear cam 26 pushes the lever 29a of the board switch 29 and the right arm 62 pushes the lever 30a of the igniter switch 30 in order to turn on both the switches 29 and 30. The magnet solenoid valve 74 is energized and the igniter is activated to perform an ignition operation.

Next, when the pushing of the point-extinguishing button 15 is released from the ignition cut-off position, the front cam 25 has the locking surfaces 52 and 52 of the stopper 41 of the box body 27 by the bias of the front coil spring 70 as shown in FIG. , 41 is moved to the front position. At the time of this advancement, since the concave portion 55 is formed in the front lower portion of the front cam 25, it does not interfere with the front pin receiving portion 43 on the mechanical box 24 side.
As the front cam 25 advances, the point-extinguishing button 15 also advances and protrudes forward more greatly than the front surface of the front panel 7. At this time, the rear end of the front lever pin 44 moves from the front circulation portion 56 to the front straight portion 57 and is locked to the rear end. Further, the rear cam 26 is restrained from moving forward by the front coil spring 71 being biased so that the front end of the rear lever pin 39 moves within the rear circulation portion 65 and is locked at the front center thereof. A locking protrusion 46a (FIGS. 2 and 6) that is lightly locked to the front end of the rear lever pin 39 is formed at the front edge of the rear long hole 46, and the rear lever pin 39 moves unexpectedly from the locking position. To prevent that.

In this state, since the magnet electromagnetic valve 74 is held open by energization in the flow path opening / closing section 22, the valve shaft 75 does not move and the main valve is also opened, and the supply of fuel gas continues. (Combustion position) Further, the left arm 61 of the rear cam 26 is in a state in which the lever 29a of the board switch 29 is pushed in, and the board switch 29 is kept ON, and the right arm 62 is separated from the lever 30a of the igniter switch 30 and the igniter switch 30 is turned on. Turn it off.
Further, when the point-extinguishing button 15 is rotated, the needle ring 78 is moved in the axial direction by rotating the adjustment ring 84 and the linkage piece 85 via the engagement sleeve 82 as described above, and the gas amount adjustment unit 23 The heating power can be adjusted by changing the opening area of the gas adjustment flow path.

Then, when the fire extinguishing button 15 is pushed in from the combustion position, as shown in FIG. 8, the front cam 25 moves backward, and the rear end of the front lever pin 44 moves in the front circulation portion 56 and is locked to the right front end. By doing so, the push-in is regulated (fire extinguishing position). When the front cam 25 is pushed in, it is pressed by the front rod 51 and the rear cam 26 is also retracted, and the front end of the rear lever pin 39 moves in the rear circulation portion 65 and is locked to the left front end thereof.
Also at this time, when the front cam 25 moves backward, the cam plate portion 53 again overlaps the bottom surface of the relief recess 63 of the rear cam groove 64 and slides on the bottom surface. Is guided by the escape recess 63 of the rear cam 26 and can move smoothly.

When the hand is released from the point-extinguishing button 15 at this fire extinguishing position, the front cam 25 is locked to the front center by the rear end of the front lever pin 44 moving in the front circulation portion 56 by the bias of the front coil spring 70. Return to the position shown in FIG. The rear cam 26 also returns to the position of FIG. 5 where the front end of the rear lever pin 39 moves from the rear circulation portion 65 to the rear straight portion 66 and contacts the partition plate 31. Thereafter, the left arm 61 is moved away from the lever 29a of the board switch 29 by the advancement of the cam 26 and turns off the board switch 29. Therefore, the control circuit board stops energizing the magnet solenoid valve 74 and closes the magnet solenoid valve 74. Let me speak. As a result, the valve shaft 75 also moves forward in the flow path opening / closing part 22 to close the main valve, so that the supply of fuel gas is stopped and the burner is extinguished.
Thus, even when the front cam 25 and the rear cam 26 move forward, the guide protrusions 58 and 67 slide on the inner surface of the mechanical box 24 so that the posture in the front-rear direction is maintained.

  Thus, according to the built-in stove 1 of the said form, in the cam mechanism part 21 of the push switch mechanism 20, several guide protrusion 58,67 along the front-back direction is protrudingly provided in the outer surface of the front cam 25 and the rear cam 26. As a result, even if a force along the front-rear direction is not transmitted to the front cam 25 and the rear cam 26 due to the pushing force applied to the point-extinguishing button 15 from an oblique direction, the cams 25, 26 are connected to the mechanical box. No twisting within 24. Therefore, even if it has the push switch mechanism 20 using the two cams 25 and 26, the push-in operation of the fire extinguishing button 15 can be performed smoothly, and a favorable usability can be maintained.

  In particular, here, the guide protrusions 58 and 67 are provided on the outer surfaces of the front cam 25 and the rear cam 26 with different sliding surfaces with respect to the inner surface of the mechanical box 24 (upper and lower surfaces and left and right side surfaces in the front cam 25, and upper and lower surfaces in the rear cam 26. The guide action by the guide protrusions 58 and 67 is effectively obtained.

Note that the number and shape of the guide protrusions are not limited to the above form, and the number can be increased or decreased or the shape can be changed. For example, the shape is not limited to the shape of a ridge that is continuous in the front-rear direction as in the above embodiment, and a short guide protrusion in the front-rear direction is intermittently protruded in the front-rear direction, or a wide guide protrusion is formed. Can be considered.
The guide protrusions can be provided not only on the outer surface of the cam but also on the inner surface of the case such as a mechanical box, or on the outer surface of the cam and the inner surface of the case.

On the other hand, the shape of the two cams and the shape of each cam groove is not limited to the above-described form, and can be changed as appropriate. In addition, a superposed portion having no cam groove can be provided. The shape and position of the front and rear lever pins and front and rear elongated holes can also be changed.
In the above embodiment, cam grooves are provided on the two cams and lever pins are provided on the side of the mechanical box that holds the cams. Conversely, lever pins are provided on the two cams, and cam grooves are provided on the side of the mechanical box. Even if the first and second cams are provided, the front and rear positions of the two cams can be changed by pressing the point-extinguishing button.

Furthermore, the operation member is not limited to the point-extinguishing button of the above form, and the size and shape can be changed as appropriate. In the above embodiment, the heating power can be adjusted by rotating the point-extinguishing button. However, the heating power adjustment may be performed by a heating power adjusting lever provided separately from the operation member.
Further, the form of the built-in stove is not limited to the above description, and the stove part may be one having two ports or the grill part, and is not limited to the built-in stove, but also in other gas cooking utensils such as a table stove. The present invention is applicable.

  1. · Built-in stove, 2 ·· Body, 3 ······, 4 ·· Grill portion, 5 ·· Main body, 7 ·· Front panel, 10 ·· Cover burner, 15 ·· Point-off button (operation member) ), 20 ..Push switch mechanism, 21 ..Cam mechanism section, 22 ..Flow path opening / closing section, 23 ..Gas amount adjusting section, 24 ..Mechanical box (case), 25 ..Front cam (first cam) ), 26..Rear cam (second cam), 27..Box body, 28..Cover, 29..Substrate switch, 30..Ignator switch, 31..Partition plate, 39..Rear lever pin, 41. · Stopper 44 · · Front lever pin 46 · · Rear long hole 47 · · Front long hole 51 · · Front rod 52 · · Locking surface 53 · · Cam plate portion 54 · · · Front cam groove 56 ··· Front circulation part, 57 ·· Front straight part, 58, 67 ·· Guide protrusion , 60 ··· Rear rod, 61 ·· Left arm, 62 ·· Right arm, 64 ·· Rear cam groove, 65 ·· Rear circulation portion, 66 ·· Rear straight portion, 70 ·· Front coil spring (first attachment) , 71... Rear coil spring (second urging member), 74... Magnet solenoid valve, 75... Valve shaft, L.

Claims (2)

In the vessel provided with a burner, a front operation member, a rear flow channel opening / closing unit having a valve shaft for opening / closing a gas flow channel to the burner, and between the operation member and the flow channel opening / closing unit. The cam is movable back and forth, the front and rear positions of the cam are changed by repeating the pushing operation of the operation member, and the fire extinguishing position that closes the gas flow path and the gas flow path are opened. A cam mechanism for moving back and forth to the combustion position,
The cam includes a front first cam coupled to the operation member and a rear second cam that moves the valve shaft back and forth, and the first cam is operated on the cam mechanism. A case in which a first urging member for urging the member side and a second urging member for urging the second cam toward the operation member side are provided, and the cam mechanism portion is projected from the operation member. A gas cooker housed inside,
A gas cooking utensil, wherein a plurality of guide protrusions along the front-rear direction are provided on the outer surface of each cam and / or the inner surface of the case.   2. The gas cooking appliance according to claim 1, wherein the guide protrusion is provided on a different sliding surface with respect to an inner surface of the case on an outer surface of each cam.

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