JP6436864B2 - Gas stove - Google Patents

Description

  The present invention relates to a gas stove in which a burner ring is disposed on an upper surface of a top plate at the periphery of a burner opening.

  Conventionally, as shown in FIG. 8, there is known a gas stove having a configuration in which a gas burner 802 is accommodated in a stove body 810 that is a rectangular box body that is open upward, and an upper open portion of the stove body 810 is covered with a top plate 803. Yes. In this type of gas stove, the gas burner 802 is fixed at a predetermined position in the stove body 810, and a burner opening 830 is formed at each position of the top plate 803 corresponding to the burner head 820 of the gas burner 802.

  The burner head 820 is placed on the upper end of a burner body 822 that extends upward from the downstream end of the mixing tube 821, and there are a number of flames between the lower surface of the burner head 820 and the upper surface of the burner body 822. A hole 824 is formed. Further, a burner head 820 protrudes above the top plate 803 from the burner opening 830, following the burner body 822, and a flame hole 824 is exposed above the top plate 803.

  An annular gap Sa is formed between the peripheral edge of the burner opening 830 and the outer peripheral surface of the burner body 822, and an annular burner ring 804 fixed to the lower ring 860 is disposed so as to close the gap Sa. ing.

  As a structure for fixing the burner ring 804 to the periphery of the burner opening 830, for example, the structure shown in FIGS. 9 and 10 has been proposed (Patent Documents 1 and 2). 9, the burner ring 804 is disposed on the top surface of the top plate 803, the lower ring 860 is disposed on the lower surface of the top plate 803, and the fixing screw is attached to the lower surface of the burner ring 804 from the lower ring 860 side. By screwing 833, the burner ring 804 and the lower ring 860 are fixed to the periphery of the burner opening 830. In FIG. 10, the locking piece 905 projects from the lower surface of the burner ring 904, and on the periphery of the burner opening 930, the sandwiching portion 910 that sandwiches the periphery and the sandwiching portion 910 projects into the gap Sb. By attaching an elastic ring 900 having a locking portion 911 that locks the locking piece 905 in a downward state by an elastic force, and pushing the locking piece 905 into the locking portion 911 from the top plate 903 side, A burner ring 904 is fixed to the periphery of the burner opening 930.

JP 2010-216775 A JP 2007-285626 A

  By the way, in recent years, from the viewpoint of improving the design of the gas stove, it has been required to reduce the size of the member disposed on the top plate. For this reason, the diameter of the burner ring also tends to be reduced.

  However, when a fixing screw is screwed from the lower surface of the burner ring to fix the burner ring and the bottom of the ring as in Patent Document 1, a mounting seat having a certain thickness is required to form a screw hole with a predetermined diameter. A plurality of burner rings must be provided on the lower surface, and it is difficult to reduce the diameter of the burner ring. Moreover, when inserting the latching piece of a burner ring into the latching | locking part of an elastic ring like patent document 2, since several fitting locations of a latching piece are required, all the latching pieces are latched uniformly. It is difficult to fit it in the case, and workability is inferior when the diameter of the burner ring is reduced. Furthermore, when the locking pieces are fitted into the locking portions one by one, the locking pieces are easily fitted in a state inclined with respect to the locking portions, and the locking portions are deformed or the fitting is incomplete. There is a problem that.

  The present invention solves the above-mentioned problems, and the object of the present invention is to properly install the burner ring without using a fixing screw when fixing the burner ring to the periphery of the burner opening. It is in providing the fixing structure excellent in.

The present invention includes a top plate in which an opening for a burner that faces the gas burner is formed,
A burner ring disposed on the top surface of the top plate at the periphery of the burner opening so as to cover the gap between the burner opening and the gas burner;
Under the ring disposed on the lower surface of the top plate at the periphery of the burner opening,
A fixing member disposed on the lower surface under the ring,
The burner ring has a ring hole into which the gas burner is inserted, an insertion portion that extends downward from the lower surface of the burner ring, and has a lower end protruding below the lower surface under the ring when inserted into the burner opening, A fixing projection protruding outward from the outer peripheral surface of the insertion portion,
Under the ring has an insertion hole into which the insertion part of the burner ring is inserted,
The fixing member has a mounting hole into which the insertion portion of the burner ring is inserted, and a fixing engagement portion that engages with a fixing protrusion of the burner ring on the periphery of the mounting hole.
With the lower end portion of the insertion portion of the burner ring protruding downward from the insertion hole under the ring, the fixing member is rotated in the circumferential direction with respect to the lower end portion of the insertion portion of the burner ring to fix the burner ring. This is a gas stove in which the burner ring and the bottom of the ring are fixed to the peripheral edge of the burner opening with the top plate interposed therebetween by engaging the engaging portion with the fixing engaging portion of the fixing member.

  According to the gas stove, when the burner ring is disposed on the top surface of the top plate at the periphery of the burner ring and the bottom of the ring is disposed on the bottom surface of the top plate at the periphery of the burner ring, the burner ring extends downward from the bottom surface of the burner ring. The insertion portion protrudes downward from the insertion hole under the ring. On the outer periphery of the insertion part of the burner ring, a fixing protrusion protruding outward is formed, while on the periphery of the mounting hole of the fixing member disposed below the ring, a fixing engaging part is formed. If the fixing member is rotated in the circumferential direction with respect to the lower end portion of the insertion portion of the burner ring that protrudes downward from below the ring, the fixing protrusion and the fixing engaging portion engage with each other. The burner ring and the fixing member are fixed in a non-rotating state. The lower surface of the top plate at the periphery of the opening for the burner is provided below the ring, and a fixing member is provided below the ring. By fixing the burner ring and the fixing member, the ceiling The burner ring and the bottom of the ring can be fixed to the peripheral edge of the burner opening across the plate.

In the gas stove, preferably,
The fixing engaging portion of the fixing member has a bulging portion that bulges downward on the periphery of the mounting hole,
The bulging part is formed so that the amount of protrusion downward is increased along the circumferential direction,
With the lower end portion of the insertion portion of the burner ring protruding downward from the insertion hole under the ring, the fixing member is rotated in the circumferential direction with respect to the lower end portion of the insertion portion of the burner ring to fix the burner ring. The portion and the bulging portion of the fixing member are engaged.

  According to the gas stove, the fixing protrusion is formed at the lower end portion of the outer peripheral surface of the insertion portion of the burner ring, and the fixing engagement portion formed at the periphery of the mounting hole of the fixing member bulges downward. In addition, since the bulging portion is formed so that the amount of protrusion downward in the circumferential direction increases, when fixing the burner ring, when the fixing member is rotated in the circumferential direction, the fixing member The peripheral edge of the mounting hole can be slid with a low frictional resistance against the fixing protrusion formed on the lower end of the outer peripheral surface of the insertion portion of the burner ring, and the fixing member can be smoothly inserted into the gap with the fixing protrusion. It can be rotated. Further, when the bulging portion is provided as the fixing engaging portion, higher processing accuracy can be obtained than when the bent portion is provided, so that the fixing protrusion and the bulging portion can be reliably engaged. Further, the fixing protrusion of the burner ring protrudes outward from the outer peripheral surface of the insertion part, while the bulging part of the fixing member is provided at the peripheral edge of the mounting hole, and accordingly, in the disengagement direction of the burner ring. Since the fixing protrusion and the bulging portion are engaged with each other in a manner substantially perpendicular to a certain circumferential direction, even if an impact is applied to the burner ring, the burner ring is hardly released.

In the gas stove, preferably,
The fixing member has a convex portion protruding downward from the lower surface of the bulging portion,
With the lower end of the insertion part of the burner ring protruding downward from the insertion hole under the ring, the insertion part of the burner ring is positioned until the fixing protrusion of the burner ring gets over the convex part of the bulging part of the fixing member. The fixing member is rotated in the circumferential direction with respect to the lower end portion to engage the fixing protrusion of the burner ring with the bulging portion of the fixing member.

  According to the gas stove, a convex portion projecting downward is formed on the bulging portion of the fixing engagement portion that engages with the fixing projection portion, and the fixing member is moved in the circumferential direction until the fixing projection portion gets over the convex portion. Therefore, the rotation of the burner ring in the disengagement direction can be restricted. As a result, the burner ring and the fixing member are securely fixed in a non-rotating state, and the release of the burner ring can be prevented from being released.

In the gas stove, preferably,
The burner ring has, on the outer peripheral surface of the insertion portion, a ridge portion with a small amount of outward projection from the fixing projection,
Under the ring, the inner periphery of the insertion hole has a cut portion into which the burner ring fixing protrusion is inserted, and a cutout portion into which the burner protrusion is inserted.

  According to the gas stove, the fixing protrusion and the protrusion formed on the outer peripheral surface of the insertion portion of the burner ring are respectively inserted into the notch and the notch formed on the inner periphery of the insertion hole under the ring. Therefore, it is difficult for the burner ring to be released even if an impact is applied to the burner ring. Moreover, according to the said gas stove, the center position of the ring hole of a burner ring and the insertion hole under a ring can be match | combined easily. Further, when fixing the burner ring, the fixing protrusions and protrusions formed on the outer periphery of the burner ring insertion part are respectively inserted into the notch part and the notch part under the ring so as to prevent rotation. For example, by rotating the fixing member in the circumferential direction while holding the burner ring, it is possible to prevent only the burner ring from rotating together with the fixing member.

  As described above, according to the present invention, the burner ring disposed on the top surface of the top plate and the bottom ring disposed on the bottom surface of the top plate are burned by the fixing member disposed from below the ring. Therefore, it is not necessary to use a fixing screw or the like for fixing the burner ring, and the diameter of the burner ring can be reduced. Also, by rotating the fixing member in the circumferential direction, the burner ring and the fixing member are fixed in a non-rotating state, thereby fixing the burner ring and the bottom of the ring with the top plate at the periphery of the opening for the burner interposed therebetween. Therefore, it is possible to prevent the inclination of the burner ring and deformation under the ring. As a result, according to the present invention, it is possible to provide a fixing structure that is not only excellent in the design of the gas stove but also excellent in workability during assembly.

FIG. 1 is a schematic perspective view showing an example of a gas stove according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of an essential part showing an example of a gas stove according to an embodiment of the present invention. FIG. 3 is a schematic perspective view showing an example of the burner ring according to the embodiment of the present invention. FIG. 4 is an upper schematic perspective view showing an example under the ring according to the embodiment of the present invention. FIG. 5 is a schematic lower perspective view showing an example of the fixing member according to the embodiment of the present invention. FIG. 6 is a main part schematic perspective view showing an example of a state in which the burner ring is assembled in the gas stove according to the embodiment of the present invention. FIG. 7 is a schematic enlarged cross-sectional view of a main part of FIG. FIG. 8 is a schematic cross-sectional view of an essential part showing an example of a conventional gas stove. FIG. 9 is a main part schematic enlarged cross-sectional view showing an example of a conventional gas stove. FIG. 10 is a main part schematic enlarged cross-sectional view showing another example of a conventional gas stove.

Hereinafter, the gas stove according to the present embodiment will be specifically described with reference to the drawings.
FIG. 1 is a schematic perspective view showing an example of a gas stove according to the present embodiment, and FIG. 2 is a schematic cross-sectional view of a main part of the gas stove shown in FIG. As shown in FIG. 1, the gas stove according to the present embodiment has a plurality of external flame type stove burners 2 accommodated in the stove body 10, and the upper surface of the stove body 10 is shown in FIG. 2. The top plate 3 is formed with a circular burner opening 30 for projecting the burner portion 2A of the stove burner 2 upward. In addition, the annular virtues 12 are placed on the upper peripheral edge of the burner opening 30 (the upper surface of the top plate 3). Further, a pan bottom temperature sensor 31 protrudes from the stove body 10 at the center of the burner portion 2A.
In the present specification, the direction in which the top plate 3 and the stove main body 10 face each other in a state where a burner ring 24 to be described later is attached to the top plate 3 is referred to as a vertical direction. Therefore, when attaching the burner ring 24 to the top plate 3, even when the top plate 3 is turned upside down or tilted, the upper surface side of the top plate 3 is referred to as the upper side and the lower surface side is referred to as the lower side.

  The stove burner 2 has a mixing tube 20 having one end opened to a gas injection nozzle of a gas supply device (not shown) and the other end opened to a burner opening 30. A burner body 21, a burner head 22, and a burner cap 23 constituting the burner portion 2A are disposed in the outlet portion 201, which is the opening at the other end, so as to be stacked upward in this order.

  As shown in FIG. 2, the outlet portion 201 of the mixing tube 20 is formed in an inner and outer double cylindrical shape extending upward toward the burner opening 30, and the burner body 21 is formed at the upper end portion of the outlet portion outer peripheral wall 202. The lower end of the burner head 22 is fitted into the upper end of the outlet inner peripheral wall 203 (the lower end of the head inner peripheral wall 223 described later). As a result, a gas conduction path S <b> 2 that opens up and down is defined inside the burner body 21.

  The burner head 22 is attached to the upper part of the burner body 21 so as to cover the gas conduction path S2 from above. A plurality of slit-shaped flame holes 220 connected to the gas conduction path S2 are formed at the lower end portion of the head outer peripheral wall 222 so as to face the outer circumference, and are sent from the outlet 201 of the mixing tube 20 into the gas conduction path S2. The mixed gas is ejected to the outer peripheral side of the burner head 22 through the flame hole 220.

  The burner body 21 is formed in an inner and outer double cylindrical shape, and the lower end portion of the body inner peripheral wall 213 is fitted to the upper end portion of the outlet portion outer peripheral wall 202 described above. The body outer peripheral wall 212 has an outer diameter inserted into a ring hole 240 of the burner ring 24 described later, and the upper end of the body inner peripheral wall 213 and the body outer peripheral wall 212 are connected by the body upper wall 214. Although not shown, between the body inner peripheral wall 213 and the body outer peripheral wall 212, an ignition electrode and a thermocouple are erected upward from the inside of the stove body 10, and are formed in the body upper wall 214. These tips face the flame holes 220 formed upward from the through holes.

  An annular gap S <b> 1 is formed between the peripheral edge of the burner opening 30 of the top plate 3 and the outer peripheral surface of the burner body 21. An aluminum die-cast burner ring 24 formed in an annular body so as to cover the gap S1 is disposed on the upper surface of the top plate 3 via an annular upper packing 41 made of a graphite sheet. A rectangular aluminum heat radiating plate 43 in which an opening 430 having substantially the same diameter as the burner opening 30 is formed on the entire lower surface of the top plate 3 excluding the burner opening 30. A rectangular metal lower ring 50 is disposed on the lower surface of the top plate 3 at the periphery of the burner opening 30 via a heat sink 43 and an annular lower packing 42 made of a graphite sheet. In addition, an annular fixing member 60 made of a thin metal plate is disposed below.

  As shown in FIGS. 2 and 3, the burner ring 24 has a substantially circular ring hole 240 concentric with the burner body 21, and the burner portion 2 </ b> A protrudes upward from the ring hole 240. On the outer peripheral edge of the burner ring 24, downwardly protruding outer peripheral ribs 260 are provided over the entire area, and although not shown, the five virtues 12 are locked on the upper surface of the outer peripheral edge of the burner ring 24 at opposite positions. A concave portion is formed. Further, a recess 242 into which the upper packing 41 is fitted is formed on the entire lower surface of the outer peripheral edge of the burner ring 24. Further, an annular insertion portion 250 that extends downward and is inserted into the burner opening 30 is formed on the lower surface of the inner periphery of the burner ring 24 where the ring hole 240 is formed. The insertion portion 250 may be provided on the lower surface closer to the outer periphery than the ring hole 240, or may be provided in an arc shape only on a part of the lower surface.

  A plurality of protrusions 252 projecting outward are formed on the outer peripheral surface of the insertion portion 250. The protruding portion 252 protrudes outward in the vertical direction over the entire insertion portion 250, and has an outer diameter formed in an inner periphery of an insertion hole 510 in the lower ring 50 described later. It is formed in a size that can be inserted into. In addition, a plurality of (three in the present embodiment) boss portions 253 are formed on the outer peripheral surface of the insertion portion 250 between the ridge portions 252 and 252 at a certain angle and spaced apart from each other. Yes. The boss portion 253 protrudes outward in the vertical direction over the entire insertion portion 250 in the same manner as the protruding portion 252, but inwardly between the upper boss portion 254 and the lower boss portion 255. A notched recess 256 is provided. The outer diameter of the lower boss portion 255 is a size that protrudes outward from the ridge portion 252, and is large enough to be inserted into a notch portion 512 that is larger in diameter than a notch portion 511 of the lower ring 50 described later. Is formed. Further, the upper surface of the lower boss portion 255 is provided with an upper surface of the lower boss portion 255 and a lower surface of the burner ring 24 positioned above the lower boss portion 255 in order to fix the burner ring 24 and the ring lower portion 50 to the periphery of the burner opening 30. The upper packing 41, the top plate 3, the heat radiating plate 43, the lower packing 42, the lower ring 50, and the inner periphery of the fixing member 60 are formed at positions that can be accommodated. The lower boss portion 255 functions as a fixing protrusion for fixing the burner ring 24 as will be described later.

  As shown in FIG. 4, the lower ring 50 has an insertion hole 510 in the center, and the insertion part 250 of the burner ring 24 is inserted into the insertion hole 510. Further, in the inner periphery of the insertion hole 510, a plurality of semicircular arc-shaped notches 511 into which the protrusions 252 of the insertion portion 250 of the burner ring 24 described above are inserted, and notches A plurality of substantially rectangular incisions 512 having a diameter larger than 511 and into which the lower boss portion 255 of the insertion portion 250 is fitted are formed. Furthermore, a downwardly protruding recess 520 into which the lower packing 42 is fitted is formed on the outer side of the insertion hole 510, and the insertion of the lower packing 42 is confirmed near the outer periphery of the recess 520. A confirmation hole 530 is formed.

  As shown in FIGS. 5 and 6, the fixing member 60 has a mounting hole 610 formed in a deformed round hole shape at the center, and the mounting hole 610 includes three small-diameter arc portions 611, A linear portion 612 having a diameter expanded between the arc portions 611 and 611 is continuously formed. The small-diameter arc portion 611 is smaller than the outer diameter of the lower boss portion 255 formed in the insertion portion 250 of the burner ring 24, but has an inner diameter that allows the lower end portion of the protruding portion 252 to be inserted, and has a larger diameter. The straight line portion 612 has an inner diameter into which the lower boss portion 255 can be inserted. Thereby, at the time of attachment, the insertion part 250 of the burner ring 24 can be easily inserted into the attachment hole 610 of the fixing member 60.

  A plurality of bulging portions 611a bulging downward are formed on a part of the periphery of the small-diameter arc portion 611 of the fixing member 60 by drawing (three in the present embodiment). The bulging portion 611a functions as a fixing engagement portion that engages with the lower boss portion 255 that is a fixing protrusion. The bulging portion 611a is formed so that the amount of downward protrusion increases stepwise in the circumferential direction (in this embodiment, counterclockwise when viewed from below). In addition, in order to prevent the inclination when the burner ring 24 is attached, all the bulging portions 611a are formed to have the same protruding amount, but the lower surface of one bulging portion 611a has a lower side. Convex part 611b which protrudes is formed. Further, the bulging portion 611a is formed with a constant width in the radial direction so as to engage with the upper surface of the lower boss portion 255 with a surface having a constant area. The bulging portion 611a may be formed with the same protruding amount in the circumferential direction, or may be formed so that the protruding amount continuously increases. Moreover, the convex part 611b may be provided in the some bulging part 611a, and two or more may be provided in one bulging part 611a.

  A claw portion 615 that protrudes downward is formed in each large-diameter linear portion 612 constituting a part of the attachment hole 610 of the fixing member 60. The claw portion 615 functions as a grip portion for rotating the fixing member 60 in the circumferential direction when fixing the burner ring 24. A plurality of confirmation holes 616 for confirming insertion of the lower packing 42 are formed in the vicinity of the outer periphery of the fixing member 60.

  Returning to FIG. 1, the five virtues 12 are placed around the burner ring 24. The virtues 12 have a virtuosity frame 121 placed around the burner ring 24 and a plurality of virtues claws 122 attached thereto, and a pair of virtuosity claws 122 located at opposing positions among the virtues claw 122. An extending portion extending inward is formed from the lower side. These extending portions are locked to the recesses formed on the upper surface of the outer peripheral edge of the burner ring 24 described above.

Next, assembly of the burner ring 24 to the top plate 3 will be described with the gas stove of the present embodiment. It is assumed that the heat radiating plate 43 is attached to the lower surface of the top plate 3.
A burner ring 24 is disposed on the upper surface of the top plate 3 at the periphery of the burner opening 30 from above via an upper packing 41, while a heat radiating plate 43 provided on the lower surface of the top plate 3 at the periphery of the burner opening 30 is provided. The lower ring 50 is disposed from below through the lower packing 42. At this time, as described above, the notch 511 formed in the inner periphery of the insertion hole 510 in the lower ring 50 is formed in the inner diameter into which the protrusion 252 is inserted, and the notch 512 is formed in the lower part Since the boss portion 255 is formed to have an inner diameter into which the boss portion 255 is inserted, when the insertion portion 250 of the burner ring 24 is inserted into the insertion hole 510 of the lower ring 50, the burner ring 24 and the lower ring 50 are connected to the burner opening 30. Although it is rotatable with respect to the peripheral edge, the burner ring 24 is prevented from rotating with respect to the lower ring 50. When the insertion portion 250 of the burner ring 24 is inserted into the insertion hole 510 under the ring 50, the ring hole 240 of the burner ring 24 and the insertion hole 510 under the ring 50 are concentrically arranged above and below the top plate 3. Is done.

  Next, the insertion portion 250 of the burner ring 24 protruding downward from the lower surface of the lower ring 50 is inserted into the mounting hole 610 of the fixing member 60. Since the mounting hole 610 of the fixing member 60 has a small-diameter arc portion 611 and a large-diameter linear portion 612, the protruding portion 252 is inserted at a position where the arc portion 611 is formed, and the linear portion 612 is inserted. The lower boss portion 255 is inserted at the position where the is formed. Thereby, the fixing member 60 is externally fitted in a loosely fitted state to the insertion portion 250 of the burner ring 24.

  Next, the claw portion 615 of the fixing member 60 is gripped so that the lower surface of the peripheral edge of the mounting hole 610 of the fixing member 60 rides on the upper surface of the lower boss portion 255, and in the circumferential direction (in this embodiment, it is opposite in the lower view). Rotate clockwise. At this time, the bulging portion 611a formed on the peripheral edge of the mounting hole 610 is formed so that the protruding amount is increased in the circumferential direction and has a certain width, so that the bulging portion 611a is connected to the lower boss portion 255. Is smoothly inserted into the gap. Further, the ridge portion 252 and the lower boss portion 255 formed on the outer peripheral surface of the insertion portion 250 of the burner ring 24 are fitted and inserted into the notch portion 511 and the notch portion 512 of the lower ring 50, respectively, so as to prevent rotation. Therefore, if the fixing member 60 is rotated in the circumferential direction while holding the burner ring 24, only the burner ring 24 does not rotate with the fixing member 60.

  Further, as shown in FIG. 7, the distance between the upper surface of the lower boss portion 255 and the lower surface of the burner ring 24 is set such that the inner peripheral edges of the top plate 3 and the upper and lower packings 41 and 42 are accommodated therebetween. However, since the bulging portion 611a is formed so that the protruding amount is increased in the circumferential direction, when the fixing member 60 is rotated in the circumferential direction, it is below the ring disposed above the fixing member 60. 50 and the like are pushed upward, and the upper surface of the lower boss portion 255 comes into contact with the lower surface of the bulging portion 611a. And since the convex part 611b which protrudes below is formed in the lower surface of one bulging part 611a, if the fixing member 60 is further rotated to the circumferential direction, the lower boss | hub part 255 will contact | abut to the convex part 611b. As described above, the elastically deformable upper and lower packings 41 and 42 made of a graphite sheet are provided on the periphery of the burner opening 30, and the bulging portion 611a is formed by drawing and is slightly elastic. Since it is deformable, when the fixing member 60 is further rotated in the circumferential direction from the state in which the lower boss portion 255 is in contact with the convex portion 611b, the lower boss portion 255 gets over the convex portion 611b as shown in FIG. Rotate to position. As a result, the upper surface of the lower boss portion 255 that is a fixing protrusion formed to protrude outwardly on the outer peripheral surface of the insertion portion 250 of the burner ring 24, and the fixing engagement portion formed on the fixing member 60. Is engaged with the lower surface of the bulging portion 611a, and the burner ring 24 and the fixing member 60 are fixed to each other in a non-rotating state. Since the lower ring 50 is disposed above the fixing member 60, the burner ring 24 is fixed by the fixing member 60, so that the burner ring 24 and the lower ring 50 sandwich the top plate 3. It is fixed to the periphery of the opening 30 for use.

  As described in detail above, according to the fixing structure of the present embodiment, the fixing member 60 disposed below the lower ring 50 is rotated so that the outer peripheral surface of the insertion portion 250 of the burner ring 24 is moved outward. By engaging the lower boss portion 255 formed so as to protrude into the bulging portion 611a formed at the peripheral edge of the mounting hole 610 of the fixing member 60, the burner ring 24 and the lower ring 50 are opened for the burner. Since it is fixed to the periphery of 30, it is not necessary to provide a thick mounting seat on the burner ring 24. For this reason, the diameter of the burner ring 24 can be reduced, and the top surface of the top plate 3 can have a clean appearance. Thereby, the design property of a gas stove can be improved.

  In addition, the fixing of the burner ring 24 to the periphery of the burner opening 30 is merely by rotating the fixing member 60, so that a complicated fitting operation to a small fixed part is unnecessary, and the inclination of the burner ring 24 or the lower ring 50 deformation is also unlikely to occur. In addition, since the bulging portion 611a is formed by drawing, the bulging portion 611a can be positioned with higher processing accuracy than the bending processing. Thereby, while being able to assemble | attach each member with a suitable attitude | position, the workability | operativity at the time of an assembly | attachment can be improved.

  Furthermore, according to the fixing structure of the present embodiment, when the burner ring 24 and the lower ring 50 are fixed to the periphery of the burner opening 30, the ridges 252 and the lower bosses 255 of the burner ring 24 are respectively The strength of the burner ring 24 in the rotational direction can be increased because it is inserted into the notch 511 and the notch 512 formed on the inner periphery of the insertion hole 510 under the ring 50. Therefore, even if a cooking device such as a pot collides with the virtues 12 and an impact is applied to the burner ring 24, the fixing of the burner ring 24 is difficult to be released.

  In addition, the impact is often applied in the circumferential direction of the burner ring 24 due to the cooker colliding from the side of the Gotoku 12, but the lower boss portion 255 of the burner ring 24 is outside the outer peripheral surface of the insertion portion 250. On the other hand, since the bulging portion 611a of the fixing member 60 is provided at the periphery of the mounting hole 610, the fixing protrusion 60 and The bulge is engaged. Furthermore, since the convex part 611b which protrudes below is formed in the lower surface of the bulging part 611a, even if the burner ring 24 rotates in a disengagement direction, rotation of the burner ring 24 is carried out by the convex part 611b. I can stop. Accordingly, it is possible to more reliably prevent the burner ring 24 from being released.

(Other embodiments)
(1) In the above embodiment, the bulging portion bulging downward is provided at the periphery of the mounting hole as the fixing engaging portion of the fixing member. The fixing protrusion and the fixing engagement portion may be engaged with each other by forming a fixing engagement portion having a diameter smaller than the outer diameter of the fixing protrusion formed in the insertion portion.
(2) Although the heat sink is attached to the lower surface of the top plate in the above embodiment, a top plate without a heat sink may be used, or a top plate with an integrated heat sink is used. May be.

2 Combustor 3 Top plate 30 Burner opening 24 Burner ring 240 Ring hole 250 Insertion section 255 Lower boss (fixing protrusion)
50 under ring 510 insertion hole 511 notch portion 512 notch portion 60 fixing member 610 mounting hole 611a bulging portion (fixing engagement portion)
611b Convex part

Claims (4)

A top plate in which an opening for the burner that faces the gas burner is formed;
A burner ring disposed on the top surface of the top plate at the periphery of the burner opening so as to cover the gap between the burner opening and the gas burner;
Under the ring disposed on the lower surface of the top plate at the periphery of the burner opening,
A fixing member disposed on the lower surface under the ring,
The burner ring has a ring hole into which the gas burner is inserted, an insertion portion that extends downward from the lower surface of the burner ring, and has a lower end protruding below the lower surface under the ring when inserted into the burner opening, A fixing projection protruding outward from the outer peripheral surface of the insertion portion,
Under the ring has an insertion hole into which the insertion part of the burner ring is inserted,
The fixing member has a mounting hole into which the insertion portion of the burner ring is inserted, and a fixing engagement portion that engages with a fixing protrusion of the burner ring on the periphery of the mounting hole.
With the lower end portion of the insertion portion of the burner ring protruding downward from the insertion hole under the ring, the fixing member is rotated in the circumferential direction with respect to the lower end portion of the insertion portion of the burner ring to fix the burner ring. A gas stove in which the burner ring and the bottom of the ring are fixed to the peripheral edge of the burner opening with the top plate interposed therebetween by engaging the fixing portion with the fixing engaging portion of the fixing member. The gas stove according to claim 1, wherein
The fixing engaging portion of the fixing member has a bulging portion that bulges downward on the periphery of the mounting hole,
The bulging part is formed so that the amount of protrusion downward is increased along the circumferential direction,
With the lower end portion of the insertion portion of the burner ring protruding downward from the insertion hole under the ring, the fixing member is rotated in the circumferential direction with respect to the lower end portion of the insertion portion of the burner ring to fix the burner ring. Gas stove for engaging the portion and the bulging portion of the fixing member. The gas stove according to claim 2, wherein
The fixing member has a convex portion protruding downward from the lower surface of the bulging portion,
With the lower end of the insertion part of the burner ring protruding downward from the insertion hole under the ring, the insertion part of the burner ring is positioned until the fixing protrusion of the burner ring gets over the convex part of the bulging part of the fixing member. A gas stove that rotates the fixing member in the circumferential direction with respect to the lower end portion to engage the fixing protrusion of the burner ring with the bulging portion of the fixing member. The gas stove according to any one of claims 1 to 3,
The burner ring has, on the outer peripheral surface of the insertion portion, a ridge portion with a small amount of outward projection from the fixing projection,
Below the ring is a gas stove having a notch portion into which the fixing protrusion of the burner ring is inserted and a notch portion into which the burner ridge is inserted on the inner periphery of the insertion hole.

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