Top plate and gas stove for gas stove

Abstract

The objective is to provide a technology that can suppress problems caused by differences in the degree of expansion between the main body of the tabletop and the reinforcing plate. [Solution] The top plate 4 for the gas stove comprises a top plate body portion 20, a reinforcing plate 70, and an adhesive medium 98. The top plate body portion 20 comprises a plate portion 24 (glass plate portion) and a decorative layer 26 that is visible from above through the plate portion 24. A portion of the reinforcing plate 70 near one of the outer peripheral edges 29 of the top plate body portion 20 is designated as an adhesive portion that is bonded to the top plate body portion 20 by the adhesive medium 98. On the side of the reinforcing plate 70 that is further from the outer peripheral edge 29 than the adhesive portion, a slit 80 is provided that penetrates the reinforcing plate 70 in the thickness direction. At least a portion of the reinforcing plate 70 that is further from the outer peripheral edge 29 than the slit 70 is designated as an unadhesive portion that is not bonded to the top plate body portion 20 by the adhesive medium 98.

Description

Technical Field

[0001] The present disclosure relates to a top plate for a gas stove and a gas stove.

Background Art

[0002] Patent Document 1 discloses a gas stove and a method for manufacturing a gas stove. In the gas stove of Patent Document 1, the inner frame includes a covering portion arranged along the inner edge of the top plate main body portion so as to cover the front side of the inner edge, and an engaged portion that engages with an anti-lifting plate, and is bonded to the inner edge of the top plate main body portion by an adhesive stored between the covering portion and the front surface of the inner edge. On the outer edge side of the inner frame, an abutting portion that abuts against the front surface of the top plate main body portion is provided along the outer edge of the inner frame as a part of the covering portion. The anti-lifting plate has an engaging portion that engages with the inner frame, and is fixed to the back side of the top plate main body portion in a state where the engaging portion applies a downward pressing force to the engaged portion.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] Some top plates of gas stoves have a configuration in which a plurality of types of plate materials made of different materials are laminated. For example, in a top plate main body portion configured such that the top plate main body is formed of a transparent glass plate and a decorative layer is laminated on the lower surface of the glass plate, a user or the like can visually recognize the decorative layer through the glass plate from above. If a metal reinforcing plate is bonded to such a top plate main body portion from the lower side, a structure that easily achieves both design and strength can be obtained. Besides such a configuration, there are cases where the top plate main body portion and the reinforcing plate on the lower side are made of different materials.

[0005] In this type of configuration, the materials of the plates that make up the main body of the tabletop and the reinforcing plates that are bonded to the main body of the tabletop from below are different, which can lead to stress caused by differences in thermal expansion coefficients. For example, if the reinforcing plates are more prone to expansion and contraction due to thermal changes than the main body of the tabletop, stress will be applied to the adhesive joints that bond the main body of the tabletop and the reinforcing plates, raising concerns that this could cause unexpected malfunctions.

[0006] One of the purposes of this disclosure is to provide a technology that can suppress defects caused by differences in the degree of expansion between the main body of the top plate and the reinforcing plate. [Means for solving the problem]

[0007] One of the disclosures is a top plate for a gas stove, A top plate for a gas stove, which is installed on a gas stove. A tabletop body comprising: a glass plate section made of glass material and having an opening through which a gas burner is inserted; and a decorative layer stacked on the underside of the glass plate section and visible from above through the glass plate section; A reinforcing plate, which is made of a metal material and is bonded to the main body of the top plate from below the decorative layer, An adhesive medium that contacts a predetermined area of ​​the reinforcing plate and adheres the top plate body and the reinforcing plate, Equipped with, In the reinforcing plate, a portion of the reinforcing plate near any of the outer edges of the main body of the top plate is designated as a portion to be bonded to the main body of the top plate by the adhesive medium. In the reinforcing plate, a slit is provided on the side further away from the outer peripheral edge than the adhesive portion, with the slit penetrating the reinforcing plate in the thickness direction. In the reinforcing plate, at least a portion of the area on the side further away from the outer peripheral edge than the slit is a non-adhesive portion that is not bonded to the top plate body by the adhesive medium. [Effects of the Invention]

[0008] According to the technology disclosed herein, it is possible to suppress defects caused by differences in the degree of expansion between the main body of the top plate and the reinforcing plate. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a schematic front view illustrating a gas stove according to the first embodiment. [Figure 2] Figure 2 is a perspective view illustrating a gas stove top plate used in the gas stove shown in Figure 1. [Figure 3] Figure 3 is a plan view of the top plate for the gas stove shown in Figure 2. [Figure 4] Figure 4 is a front view of the top plate for the gas stove shown in Figure 2. [Figure 5] Figure 5 is a view of the underside of the top plate for the gas stove shown in Figure 2. [Figure 6] Figure 6 is an exploded perspective view of the top plate for the gas stove shown in Figure 2. [Figure 7] Figure 7 is a rear view illustrating the structure of the top plate for the gas stove shown in Figure 2, including the main top plate, reinforcing plate, ring member, plate-shaped member, connecting member, etc. [Figure 8] Figure 8 is a rear view showing the reinforcing plate for the gas stove top plate shown in Figure 2. [Figure 9] Figure 9 is a rear view showing the structure obtained by removing the plate-like member from the structure in Figure 7. [Figure 10] Figure 10 is a rear view showing the structure with the reinforcing plate removed from the structure in Figure 9. [Figure 11] Figure 11 is a rear view showing the structure obtained by removing the ring member from the structure in Figure 10. [Figure 12] Figure 12 is a rear view showing the main body of the top plate for the gas stove shown in Figure 2. [Figure 13] Figure 13 is a magnified and partially shown view of the structure obtained by cutting the top plate for the gas stove shown in Figure 2 horizontally at position AA of the first clamping structure (Figure 3), and is a perspective view taken from diagonally above. [Figure 14]Fig. 14(A) is a perspective view showing an enlarged part of the structure of Fig. 13, and Fig. 14(B) is a perspective view showing an enlarged part of the structure of Fig. 13 different from Fig. 14(A). [Figure 15] Fig. 15 is a partially enlarged view showing a structure obtained by laterally cutting the top plate for the gas stove of Fig. 2 at the position A-A of the first sandwiching structure (Fig. 3), and is a perspective view seen from an obliquely lower side. [Figure 16] Fig. 16 is a partially and schematically enlarged view showing a structure obtained by laterally cutting the top plate for the gas stove of Fig. 2 at the position B-B of the second sandwiching structure (Fig. 3), and is a perspective view seen from an obliquely upper side. [Figure 17] Fig. 17 is a partially and schematically enlarged view showing a structure obtained by laterally cutting the top plate for the gas stove of Fig. 2 at the position C-C of the third sandwiching structure (Fig. 3), and is a perspective view seen from an obliquely upper side. [Figure 18] Fig. 18 is a partially enlarged view showing a structure obtained by laterally cutting the top plate for the gas stove of Fig. 2 at a position near the outer slit, and is a perspective view seen from an obliquely lower side. [Figure 19] Fig. 19 is a back view illustrating a part of the top plate for a gas stove used in the gas stove according to the second embodiment. [Figure 20] Fig. 20 is a back view showing a reinforcing plate of the top plate for a gas stove used in the gas stove according to the second embodiment. DESCRIPTION OF EMBODIMENTS

[0010] Each of the following [1] to [6] is an example of a gas stove included in the present disclosure.

[0011] [1] A top plate for a gas stove provided in the gas stove, a top plate main body portion including: a glass plate portion formed of a glass material and provided with an opening through which a gas burner is inserted; and a decorative layer laminated on a lower side of the glass plate portion so as to overlap the glass plate portion and visually recognizable from an upper side through the glass plate portion, A reinforcing plate, which is made of a metal material and is bonded to the main body of the top plate from below the decorative layer, An adhesive medium that contacts a predetermined area of ​​the reinforcing plate and adheres the top plate body and the reinforcing plate, Equipped with, In the reinforcing plate, a portion of the reinforcing plate near any of the outer edges of the main body of the top plate is designated as a portion to be bonded to the main body of the top plate by the adhesive medium. In the reinforcing plate, a slit is provided on the side further away from the outer peripheral edge than the adhesive portion, with the slit penetrating the reinforcing plate in the thickness direction. In the reinforcing plate, at least a portion of the area on the side further away from the outer peripheral edge than the slit is a non-adhesive portion that is not adhered to the top plate body by the adhesive medium. A top plate for a gas stove.

[0012] In the gas stove top plate described in [1] above, the decorative layer is visible from above through the glass plate, thus enhancing the design. However, in this top plate, the reinforcing plate is bonded to the decorative layer via an adhesive medium. For example, if the degree of expansion or contraction of the reinforcing plate is greater than that of the main top plate near the adhesive medium, there is a concern that the reinforcing plate may shift position relative to the main top plate, causing the decorative layer to peel off. Such "thermal effects" are more likely to be a problem near the opening through which the gas burner is inserted. In contrast, in the top plate described in [1] above, a portion of the reinforcing plate near the outer edge where the influence of the gas burner is relatively small is designated as the bonding area, and this bonding area is bonded to the main top plate. Therefore, the main top plate and the reinforcing plate can be reliably positioned by the adhesive medium at a position near the outer edge where the influence of the gas burner is relatively small. Furthermore, since the reinforcing plate has a slit on the side further from the outer edge than the adhesive area, even if a relative displacement of the reinforcing plate relative to the main body of the top plate occurs on the side further from the outer edge than the slit, the effect of that relative displacement is relieved by the slit. Therefore, it is possible to effectively prevent or suppress problems such as peeling or damage caused by the effect of the above relative displacement extending to the adhesive area near the outer edge.

[0013] [2] In the reinforcing plate, the adhesive portion is a longitudinal region along the outer peripheral edge, The slit is a longitudinal through-hole along the outer peripheral edge. A top plate for the gas stove described in [1].

[0014] In the gas stove top plate described in [2] above, a wider bonding area can be secured along the outer edge at a position closer to the outer edge where it is less affected by the gas burner. On the other hand, since the slits are provided longitudinally along the outer edge inside the bonding area closer to the outer edge, the influence of the relative displacement on the bonding area can be effectively suppressed by efficiently arranging the slits without making the openings arbitrarily large.

[0015] [3] The main body of the top plate is provided with one outer peripheral edge extending in a predetermined first direction and another outer peripheral edge extending in the first direction, In the reinforcing plate, a portion of one of the parts near the outer peripheral edge is the part to be bonded, In the reinforcing plate, a portion of the other outer peripheral edge is the other adhesive portion. In the reinforcing plate, one slit is provided on the side of one of the outer peripheral edges in a second direction perpendicular to the first direction, and on the side further away from one of the outer peripheral edges than the adhesive portion. In the reinforcing plate, another slit is provided on the other outer peripheral edge side in the second direction and on the side further away from the other outer peripheral edge than the other adhesive portion, In the main body of the top plate, the opening is provided at a position between one of the slits and the other slit in the second direction. In the reinforcing plate, at least a portion of the region between one slit and the other slit is the non-adhesive portion. A top plate for a gas stove as described in [1] or [2].

[0016] In the gas stove top plate described in [3] above, an opening is provided in the top plate body between one slit and the other slit. Therefore, in the region of the reinforcing plate between the one slit and the other slit, differences in expansion and contraction due to the heat of the gas burner are likely to occur in relation to the top plate body. In the top plate described above, a non-adhesive portion is provided in this region. Therefore, at the location of the non-adhesive portion, it is easier to prevent or suppress problems caused by relative displacement of the reinforcing plate while the top plate body and the reinforcing plate are bonded together. Furthermore, since the inner region between the one slit and the other slit and the outer bonded region (the region of the one bonded part and the region of the other bonded part) are separated by the one slit and the other slit, even if relative displacement due to heat occurs in the inner region, the effects of that relative displacement can be easily dissipated in the one slit or the other slit. Therefore, problems such as peeling or damage caused by the effects of that relative displacement extending to the one bonded part and other bonded parts can be effectively prevented or suppressed.

[0017] [4] In the reinforcing plate, the entire region between one slit and the other slit is the non-adhesive portion. A top plate for the gas stove described in [3].

[0018] In the gas stove top plate described in [4] above, the entire inner region between one slit and the other slit is a non-adhesive area. Therefore, even if the relative displacement described above occurs in the inner region, it is possible to more reliably prevent the adhesive from being forcibly peeled off in the inner region.

[0019] [5] The main body of the top plate is provided with a first outer peripheral edge extending along a predetermined front-rear direction, a second outer peripheral edge extending along the front-rear direction, a third outer peripheral edge extending along a left-right direction perpendicular to the front-rear direction, and a fourth outer peripheral edge extending along the left-right direction, as the outer peripheral edges. The reinforcing plate is provided with a first adhesive portion near the first outer edge, a second adhesive portion near the second outer edge, a third adhesive portion near the third outer edge, and a fourth adhesive portion near the fourth outer edge, as the adhesive portions. In the reinforcing plate, the first slit is provided on the side of the first outer peripheral edge in the left-right direction and on the side further away from the first outer peripheral edge than the first adhesive portion. In the reinforcing plate, a second slit is provided on the side of the second outer peripheral edge in the left-right direction and on the side further away from the second outer peripheral edge than the second adhesive portion. In the reinforcing plate, the third slit is provided on the side of the third outer peripheral edge in the front-rear direction and on the side further away from the third outer peripheral edge than the third adhesive portion. In the reinforcing plate, the fourth slit is provided on the side of the fourth outer peripheral edge in the front-rear direction and on the side further away from the fourth outer peripheral edge than the fourth adhesive portion. In the main body of the top plate, the openings are provided at a position between the first slit and the second slit in the left-right direction, and at a position between the third slit and the fourth slit in the front-rear direction. In the reinforcing plate, at least a portion of the region between the first slit and the second slit, and the region between the third slit and the fourth slit, is the non-adhesive portion. A top plate for a gas stove, as described in any one of [1] through [4].

[0020] In the gas stove top plate described in [5] above, openings are provided in the top plate body between the first and second slits, and between the third and fourth slits. Therefore, in the reinforcing plate, differences in expansion and contraction due to the heat of the gas burner are likely to occur in the region surrounded by these slits in relation to the top plate body. In the top plate described above, a non-adhesive portion is provided in this region. Therefore, at the location of the non-adhesive portion, it is easier to prevent or suppress problems caused by relative displacement of the reinforcing plate while the top plate body and the reinforcing plate are bonded together. Furthermore, the inner region between the first and second slits and the adhesive region outside of these (the region of the first bonded portion and the region of the second bonded portion) are separated by the first and second slits, and the inner region between the third and fourth slits and the adhesive region outside of these (the region of the third bonded portion and the region of the fourth bonded portion) are separated by the third and fourth slits. Therefore, even if relative displacement due to heat occurs in the region surrounded by these slits, the slits surrounding the region can easily dissipate the effects of that relative displacement. Therefore, it is possible to effectively prevent or suppress problems such as peeling or damage caused by the relative displacement affecting the bonded parts outside the slit surrounding the region (first bonded part, second bonded part, third bonded part, fourth bonded part).

[0021] A gas stove equipped with a top plate for gas stoves as described in any one of [6], [1] through [5].

[0022] <First Embodiment> The following description relates to a gas stove according to the first embodiment. 1-1. Basic configuration of a gas stove The gas stove 1 shown in Figure 1 is configured as a built-in stove capable of heating cooking utensils such as cooking pots. The gas stove 1 is equipped with multiple burner sections 6A, 6B, and 6C, and has a built-in grill compartment 10. The gas stove 1 is configured with a top plate 4, which is the top plate for the gas stove, attached to the main body 1A of the device. The main body 1A is the part of the gas stove 1 excluding the top plate 4 and the trivets 9A, 9B, 9C, etc. The main body 1A has a housing section 2 that forms the outer shell of the gas stove 1, and various parts (such as the grill compartment 10) housed within the housing section 2.

[0023] The top plate 4 is fixed to the upper end of the housing 2. The gas stove 1 is provided with a left-side stove section 6A and a right-side stove section 6B, respectively, exposed from the top plate 4, and a small stove section 6C is provided between the left and right stove sections 6A and 6B in the left-right direction and towards the rear. The left stove section 6A is provided with a gas burner 8A, the right stove section 6B is provided with a gas burner 8B, and the small stove section 6C is provided with a gas burner 8C. The gas burners 8A, 8B, and 8C are configured as known gas burners and are supplied with gas via a gas supply passage (not shown in Figure 1), with a portion of each positioned above the top plate 4. Trivets 9A, 9B, and 9C are assembled around each of the gas burners 8A, 8B, and 8C, respectively, while resting on the top plate 4. Below the top plate 4, near the center of the inside of the main body 1A, there is a grill compartment 10.

[0024] 1-2. Basic configuration of the tabletop The top plate 4 is a top plate for a gas stove that can be applied to gas stoves such as the one shown in Figure 1 and other gas stove configurations. The housing 2 to which the top plate 4 is attached comprises left and right side walls (not shown), a rear wall (not shown), a front panel 2A that functions as a front wall, and a bottom wall (not shown). The housing 2 has a configuration in which the component storage space is enclosed by the front, rear, left, and right walls, and the lower side of the component storage space is closed by the bottom wall. The housing 2 has a box-like shape with its upper end open so that its upper end is configured as an opening, and it houses various components such as gas burners 8A, 8B, 8C and a grill compartment 10. The top plate 4 is attached to the upper end (open end) of the housing 2 in a configuration that closes the opening configured on the upper end side of the housing 2. In this way, the top plate 4 forms the top surface of the gas stove 1 while closing the housing 2.

[0025] The top plate 4 has the appearance shown in Figures 2 to 5 and is equipped with the components shown in Figure 6. As shown in Figure 3, the top plate 4, when viewed from above, is elongated with the left-right direction as its longitudinal direction, and specifically, it is a roughly rectangular shape that is horizontally elongated. As shown in Figure 4, the top plate 4 has a thin plate-like structure. As shown in Figure 6, the top plate 4 is equipped with a top plate body 20, a reinforcing plate 70, a ring member 61, a plate-like member 62, a first packing 63 (Figures 13, 16, 17), a second packing 64 (Figures 13, 16, 17), a connecting member 65 (Figures 13, 16, 17), an adhesive medium 98, and other components are also provided. Packing 64 is an example of a packing placed between the first peripheral part and the second peripheral part.

[0026] As shown in Figures 6 and 12, the main body of the top plate 20 is a plate-shaped body comprising a plate portion 24 and a decorative layer 26. The plate portion 24 is a glass plate portion made of glass material. Various known glass materials can be used as the glass material constituting the plate portion 24. The plate portion 24 has openings 21 through which the gas burner 8 is inserted, and specifically, it is a glass plate in which multiple openings 21 (three in the representative example in Figures 2 and 6) are configured as through holes. The multiple openings 21 are insertion holes through which the gas burner 8 is inserted from below.

[0027] The decorative layer 26 is a printed layer formed, for example, by printing, and is a layer formed integrally with the plate portion 24. The decorative layer 26 is laminated on the underside of the glass plate portion, overlapping the plate portion 24 (glass plate portion), and is visible from above through the glass plate portion. As shown in Figures 13 to 16, the top plate body portion 20 has a configuration in which the plate portion 24 and the decorative layer 26 are stacked vertically, with the decorative layer 26 covering part or all of the underside of the plate portion 24. In the example in Figure 12, the entire back surface of the top plate body portion 20 is the decorative layer 26. That is, the entire back surface of the plate portion 24 is covered by the decorative layer 26. The top plate body portion 20 has a uniform thickness overall. In the examples in Figures 13 to 16, the decorative layer 26 is shown with a thick line. The plate portion 24 (glass plate portion) is a light-transmitting (for example, transparent) glass plate, so that when a user looks at the top plate body portion 20 from above, the color and pattern of the upper surface of the decorative layer 26 can be seen through the light-transmitting plate portion 24. The decorative layer 26 may be arranged in such a way that it covers only a part of the back surface of the plate portion 24. The plate portion 24 may be transparent or semi-transparent.

[0028] As shown in Figures 6 and 12, multiple openings 21 are formed in the center of the top plate body 20 as through holes through which gas burners 8A, 8B, and 8C (Figure 1) are inserted. In the example of Figure 6, the multiple openings 21 are provided as a first opening 21A, a second opening 21B, and a third opening 21C. As shown in Figures 2 and 3, multiple clamping structures 60, which will be described later, are arranged around each of the first opening 21A, the second opening 21B, and the third opening 21C, and the vicinity of each of the first opening 21A, the second opening 21B, and the third opening 21C are covered by each clamping structure 60.

[0029] As shown in Figure 12, the outer peripheral edge 29 of the top plate body 20 is rectangular in plan view (specifically, roughly rectangular), and the third outer peripheral edge 29C, which is the front outer peripheral edge of the outer peripheral edge 29, has an end (edge) that extends in the left-right direction. The first outer peripheral edge 29A and the second outer peripheral edge 29B, which are the left and right outer peripheral edges of the outer peripheral edge 29, have ends that extend in the front-back direction.

[0030] In this specification, the thickness direction (plate thickness direction) of the tabletop body 20 is the vertical direction, the longitudinal direction when the tabletop body 20 is viewed from above is the left-right direction, and the direction perpendicular to the vertical and left-right directions is the front-back direction. In the vertical direction, the front side of the tabletop body 20 (the side on which the trivets 9A, 9B, and 9C are placed) is the upper side, and the opposite side, the back side, is the lower side. The left-right direction is also referred to as the transverse direction. In the example in Figure 3, the direction in which each edge at the front and rear ends of the tabletop 4 extends is the left-right direction, and the direction in which each edge at the left and right ends extends is the front-back direction.

[0031] The reinforcing plate 70 shown in Figures 6 and 8 is constructed in a plate shape from a different material than the plate portion 24. In the representative example shown in Figure 6, etc., the reinforcing plate 70 is a metal plate made of a metal material. As shown in Figure 9, the reinforcing plate 70 is bonded to the top plate body portion 20 and fixed to the top plate body portion 20 by clamping with the clamping structure portion 60 described later. The reinforcing plate 70 comprises a flat portion 73 whose upper and lower surfaces are flat surfaces, and a plurality of stepped portions 42 which are configured in a stepped shape so as to be lower than the flat portion 73. Each stepped portion 42 is circular and annular in shape, and an opening 71 is provided at the inner edge.

[0032] The frame 30 shown in Figures 2 and 6 is a component that surrounds the structure formed by integrally assembling the top plate body 20 and the reinforcing plate 70 from the outside. Specifically, as shown in Figure 2, it is arranged to surround the top plate body 20 and the rear side member 40, which is positioned on the rear side of the top plate body 20, from the outside. The frame 30 is made of, for example, a metal material and is configured in a rectangular frame shape as shown in Figure 6. The frame 30 is bonded to the outer edge of the plate-like body formed by the integral assembly of the top plate body 20 and the rear side member 40 using an adhesive medium such as an adhesive, and has the function of reinforcing the vicinity of the outer edge 29 of the top plate body 20.

[0033] The packing 102 is a sealing member fixed to the lower surface of the frame 30 and is positioned along the frame 30. When the top plate 4 is placed on the mounting surface of the kitchen counter (the upper surface of the periphery of the mounting hole), for example, the packing 102 is sandwiched between the mounting surface and the frame 30, and is a component that seals the gap between the top plate 4 and the mounting surface.

[0034] 1-3. Clamping structure As shown in Figures 2 and 3, the top plate 4 has clamping structures 60 positioned near each of the openings 21. In each clamping structure 60, a ring member 61 is fixed to the upper surface 20B side of the top plate body 20, and a plate-shaped member 62 is fixed to the lower surface 20A (Figure 6) side of the top plate body 20, and these are connected by a connecting member 65. Specifically, as shown in Figures 13, 17, and 18, in each clamping structure 60, a packing 64 is positioned between the first peripheral portion 20Z, which is the part of the top plate body 20 located around the opening 21, and the second peripheral portion 70Z, which is the part of the reinforcing plate 70 located below the first peripheral portion 20Z, and the annular protrusion 124 and the plate-shaped member 62 sandwich the first peripheral portion 20Z, the packing 64, and the second peripheral portion 70Z. The first peripheral portion 20Z is the part of the top plate body 20 located around the opening 21, and is one side of the portion that sandwiches the packing 64 (the part of the top plate body 20 located above the packing 64). The second peripheral portion 70Z is the part of the reinforcing plate 70 located around the opening 71, and is the other side of the portion that sandwiches the packing 64 (the part of the reinforcing plate 670 located below the packing 64).

[0035] In this embodiment, the clamping structure 60 is provided with a first clamping structure 60A (hereinafter also referred to as clamping structure 60A), a second clamping structure 60B (hereinafter also referred to as clamping structure 60B), and a third clamping structure 60C (hereinafter also referred to as clamping structure 60C).

[0036] The clamping structure 60A shown in Figure 13 has a ring member 61A fixed to the upper surface 20B side of the top plate body 20, and a plate-shaped member 62A fixed to the lower surface 20A side of the top plate body 20, and these are connected by a connecting member 65. The clamping structure 60A is configured such that the annular protrusion 124 and the plate-shaped member 62A clamp the first peripheral portion 20Z, the packing 64A and the second peripheral portion 70Z, with a packing 64A positioned between the first peripheral portion 20Z near the opening 21A and the second peripheral portion 70Z located below the first peripheral portion 20Z.

[0037] The clamping structure 60B shown in Figure 17 has a ring member 61B fixed to the upper surface 20B side of the top plate body 20, and a plate-shaped member 62B fixed to the lower surface 20A side of the top plate body 20, and these are connected by a connecting member 65. The clamping structure 60B is configured such that the annular protrusion 124 and the plate-shaped member 62B clamp the first peripheral portion 20Z, the packing 64B and the second peripheral portion 70Z, with a packing 64B positioned between the first peripheral portion 20Z near the opening 21B and the second peripheral portion 70Z located below the first peripheral portion 20Z.

[0038] The clamping structure 60C shown in Figure 18 has a ring member 61C fixed to the upper surface 20B side of the top plate body 20, and a plate-shaped member 62C fixed to the lower surface 20A side of the top plate body 20, and these are connected by a connecting member 65. The clamping structure 60C is configured such that the annular protrusion 124 and the plate-shaped member 62C clamp the first peripheral portion 20Z, the packing 64B and the second peripheral portion 70Z, with a packing 64C positioned between the first peripheral portion 20Z near the opening 21C and the second peripheral portion 70Z located below the first peripheral portion 20Z.

[0039] As shown in Figures 2 and 3, each of the clamping structures 60A, 60B, and 60C has through holes 69 (through holes 69A, 69B, and 69C) that penetrate vertically, and these are positioned inside the openings 21A, 21B, and 21C (Figure 6) in the top plate body 20. That is, the opening areas of the through holes 69A, 69B, and 69C are located inside the opening areas of the openings 21A, 21B, and 21C, respectively. When the top plate 4 is installed as shown in Figure 1, the gas burners (cooker burners) 8A, 8B, and 8C are inserted into the through holes 69A, 69B, and 69C from below, respectively. In this configuration, the clamping structures 60A, 60B, and 60C have similar characteristics and are all equipped with a ring member 61, a plate-shaped member 62, a packing 63, a packing 64, and a connecting member 65.

[0040] In each clamping structure 60, the ring member 61 mainly comprises a cylindrical portion 122 and an annular protruding portion 124. In a typical example, the cylindrical portion 122 and the annular protruding portion 124 are integrated by integral molding, but the cylindrical portion 122 and the annular protruding portion 124 may be made of separate parts and assembled together. The cylindrical portion 122 is configured to be annular (specifically circular) and cylindrical (specifically cylindrical). The cylindrical portion 122 is inserted into the opening 21 and positioned in the gap between the gas burner and the opening 21. The inner circumference of the cylindrical portion 122 constitutes part of the through hole 69. Specifically, the through hole 69 is formed by the inner circumference of the cylindrical portion 122 and the opening 142 provided in the plate-shaped member 62. As shown in Figure 1, when the top plate 4 is assembled to the housing portion 2, the gas burner is inserted into the through hole 69. For example, as shown in Figures 13 and 14, the ring member 61A of the clamping structure 60A comprises a cylindrical portion 122 and an annular protruding portion 124. The cylindrical portion 122 of the ring member 61A, which is annular and cylindrical, is inserted into the opening 21A and positioned in the gap between the gas burner 8A (Figure 1) and the opening 21A. The inner circumference of the cylindrical portion 122 constitutes part of the through hole 69A. The through hole 69A is configured such that the inner circumference of the cylindrical portion 122 and the opening 142 provided in the plate-shaped member 62A communicate vertically. As shown in Figure 1, when the top plate 4 is assembled to the housing portion 2, the gas burner 8A is inserted into the through hole 69A.

[0041] In all clamping structures 60, the annular protrusion 124 has a flange-like structure that extends from the outer circumference of the upper end of the cylindrical portion 122. The annular protrusion 124 is positioned to be arranged in a ring along the opening 21 and to cover the upper side of the opening 21. Specifically, the annular protrusion 124 covers the inner edge of the opening 21, concealing the inner edge of the opening 21 so that it cannot be seen from above. For example, in the clamping structure 60A of Figures 13 and 14, the annular protrusion 124 is arranged in a ring along the opening 21A and to cover the upper side of the opening 21A. The annular protrusion 124 has a mounting portion 124A (engaged portion) which is the target area for engaging the trivet 9A.

[0042] In each of the clamping structures 60, the packing 63 is a sealing member made of a non-metallic material such as carbon, and is thin and annular in shape. The packing 63A is not limited to carbon as long as it is a heat-resistant material. The packing 63 is arranged annularly along the inner periphery of the opening 21 and is fixed while being sandwiched between the annular projection 124 and the upper surface 20B of the top plate body 20. The packing 63 is in close contact with the upper surface 20B of the top plate body 20 and the ring member 61A around its entire circumference. The entire upper surface of the packing 63 is covered by the annular projection 124. For example, as shown in Figures 13 and 14, the packing 63A is in close contact with the annular projection 124 around the entire circumferential direction of the opening 21A, and is also in close contact with the upper surface 20B (specifically, the portion of the upper surface 20B near the opening 21A) around the entire circumferential direction of the opening 21A.

[0043] In each of the clamping structures 60, the plate-shaped member 62 is a plate-shaped component, and is made of a metal plate, for example, made of a metal material. As shown in Figure 7, each of the plate-shaped members 62A, 62B, and 62C is made of a plate material with a rectangular outer edge, and an opening 142 is provided near the center as a through hole that penetrates the plate-shaped member 62 in the thickness direction. In this typical example, the plate-shaped member 62 is made of a rectangular plate, but it may also be made of a circular disc or any other shape. The plate-shaped member 62 is placed on top of the top plate body 20 on the lower side (lower surface 20A side) of the top plate body 20 such that its own thickness direction and the thickness direction of the top plate body 20 are in the same direction or approximately the same direction, and is fixed to the cylindrical portion 122 of the ring member 61. The plate-shaped member 62 is positioned so that the portion of the plate-shaped member 62 near the opening 142 covers the lower end of the cylindrical portion 122 from below and is in contact with the lower end, and the cylindrical portion 122 and the plate-shaped member 62 are fixed together by the connecting member 65. For example, as shown in Figures 13 and 14, the plate-shaped member 62A is positioned below the top plate body portion 20 (on the bottom surface 20A side) and is fixed to the cylindrical portion 122 of the ring member 61A. The portion of the plate-shaped member 62A near the opening 142 is positioned so that the portion of the plate-shaped member 62A covers the lower end of the cylindrical portion 122 from below and is in contact with the lower end, and the cylindrical portion 122 and the plate-shaped member 62A are fixed together by the connecting member 65.

[0044] In each of the clamping structures 60, the packing 64 is a sealing member made of a non-metallic material such as carbon, and is thin, plate-shaped and annular in shape. The packing 64 is not limited to carbon as long as it is a heat-resistant material. As shown in Figure 11, each of the multiple packings 64 is arranged in an annular shape along the inner periphery of each opening 21 and is fixed while being sandwiched between the plate-shaped member 62 and the lower surface 20A of the top plate body 20. The packing 64 is in close contact with the lower surface 20A of the top plate body 20 and the reinforcing plate 70 around its entire circumference. The inner periphery of the packing 64 is circular, and the entire upper surface of the packing 64 is covered by the top plate body 20. For example, as shown in Figures 13 and 14, the packing 64A adheres tightly to the lower surface 20A (specifically, the portion of the lower surface 20A of the first peripheral portion 20Z near the opening 21A) over the entire circumferential direction of the opening 21A, and adheres tightly to the second peripheral portion 70Z of the reinforcing plate 70 over the entire circumferential direction of the opening 21A.

[0045] As shown in Figures 8 and 9, the reinforcing plate 70 is provided with a plurality of openings 71 (openings 71A, 71B, 71C) that penetrate the reinforcing plate 70 in the thickness direction, and each of the openings 71A, 71B, 71C is arranged to communicate with each of the openings 21A, 21B, 21C of the top plate body 20. For example, opening 71A is provided in a form that communicates with opening 21A so that the space inside opening 71A and the space inside opening 21A are connected. Near each of the openings 71 (each of the openings 71A, 71B, 71C) in the reinforcing plate 70, annular stepped portions 72 (stepped portions 72A, 72B, 72C) are provided. The stepped portions 72 have a configuration that includes the openings 71 and are configured to be annular and stepped so that they are lower than the flat portion 73 of the reinforcing plate 70. The inner edge of the stepped portion 72 is the opening 71. A packing 64 is fitted into the stepped portion 72, and the stepped portion 72 positions the packing 64 so that the position of the opening on the inner circumference of the packing 64 aligns with the position of the opening 71 of the stepped portion 72. For example, as shown in Figure 14, an annular stepped portion 72A is provided near the opening 71A, and a packing 64A is fitted into the stepped portion 72A. The stepped portion 72A positions the packing 64A so that the opening on the inner circumference of the packing 64A communicates with the openings of opening 71A, opening 21A, and packing 63A.

[0046] The connecting member 65 is configured as a fastening member (specifically a screw member) and functions to connect and fix the ring member 61 and the plate-shaped member 62. In both clamping structures 60, the ring member 61 and the plate-shaped member 62 are fixed by the connecting member 65 with the lower end of the cylindrical portion 122 of the ring member 61 in full circumferential contact with the peripheral edge of the opening 142 of the plate-shaped member 62.

[0047] 1-4.Adhesive structure The reinforcing plate 70 shown in Figure 7 is bonded to the main body of the top plate 20 from the underside of the decorative layer 26. As shown in Figure 8, an adhesive medium 98, such as an adhesive, is used as the medium for bonding the main body of the top plate 20 and the reinforcing plate 70. The adhesive medium 98 contacts a predetermined area of ​​the reinforcing plate 70 and functions to bond the main body of the top plate 20 and the reinforcing plate 70. In the example in Figure 8, the adhesive medium 98 placed between the reinforcing plate 70 and the main body of the top plate 20 is conceptually shown by a dashed line. The adhesive medium 98 in Figure 8 is placed sandwiched between the upper surface of the reinforcing plate 70, which is configured as shown in Figure 18, and the lower surface of the main body of the top plate 20 (in the example in Figure 18, the lower surface of the decorative layer 26).

[0048] In the reinforcing plate 70 shown in Figure 7, the area in contact with the adhesive medium 98 functions as the adhesive portion. In this embodiment, a portion of the reinforcing plate 70 near one of the outer peripheral edges of the top plate body 20 is designated as the adhesive portion. In the example in Figure 7, the outer peripheral edge 29 of the top plate body 20 is provided with a first outer peripheral edge 29A and a second outer peripheral edge 29B extending linearly in the front-to-back direction (first direction), and a third outer peripheral edge 29C extending linearly in the left-to-right direction (second direction). The first outer peripheral edge 29A corresponds to an example of one outer peripheral edge, and the second outer peripheral edge 29B corresponds to an example of the other outer peripheral edge. The clamping structure 60A is an outer peripheral edge-side structure positioned near the first outer peripheral edge 29A (one outer peripheral edge). The clamping structure 60B is an outer peripheral edge-side structure positioned near the second outer peripheral edge 29B (the other outer peripheral edge). Specifically, the clamping structure 60A is positioned on the top plate 4 closer to the first outer edge 29A (one outer edge) than to the left-right center of the top plate 4, and the clamping structure 60B is positioned on the top plate 4 closer to the second outer edge 29B (the other outer edge) than to the left-right center of the top plate 4.

[0049] In the lower surface of the top plate body 20 shown in Figure 7, a portion of the area between the first outer peripheral edge 29A (one outer peripheral edge) and the clamping structure 60A corresponds to an example of an adhesive area near the one outer peripheral edge, and is the area where the adhesive medium 98 is placed, and is the area where the adhesive medium 98 adheres the top plate body 20 and the reinforcing plate 70. In the example of Figure 7, the range of the adhesive medium 98 that adheres in the "adhesion area near the one outer peripheral edge" is conceptually shown by a dashed line. The "adhesion area near the one outer peripheral edge" is provided longitudinally in the front-to-back direction along the first outer peripheral edge 29A (one outer peripheral edge) which extends in the front-to-back direction. In the reinforcing plate 70, a portion of the area near the first outer peripheral edge 29A (one outer peripheral edge) (specifically, the portion that comes into contact with the adhesive medium 98) corresponds to an example of a portion to be adhered.

[0050] In the lower surface of the top plate body 20 shown in Figure 7, a portion of the area between the second outer edge 29B and the clamping structure 60B corresponds to an example of an adhesive area closer to the other outer edge, and is the area where the adhesive medium 98 is placed, and is the area where the adhesive medium 98 adheres the top plate body 20 and the reinforcing plate 70. In the example of Figure 7, the range of the adhesive medium 98 that adheres in the "adhesion area closer to the other outer edge" is conceptually shown by a dashed line. The "adhesion area closer to the other outer edge" is provided longitudinally in the front-to-back direction along the second outer edge 29B (other outer edge) which extends in the front-to-back direction. In the reinforcing plate 70, a portion of the part closer to the second outer edge 29B (other outer edge) (specifically, the part that comes into contact with the adhesive medium 98) corresponds to an example of another part to be adhered.

[0051] 1-5. Slit As shown in Figures 7 and 8, slits 81 and 82 are provided in the reinforcing plate 70 on the side further from the outer edge 29 than the adhesive portion, and these slits penetrate the reinforcing plate 70 in the thickness direction. In the example in Figure 7, both the "one adhesive portion" and the "other adhesive portion" in the reinforcing plate 70 are longitudinal regions that contact the longitudinally arranged adhesive medium 98, and are longitudinal regions along the outer edge 29. The slits 81 and 82 are also longitudinal penetrations along the outer edge 29. In the top plate body portion 20, openings 21A and 21B (see Figures 6 and 11, etc.) are provided at positions between slit 81 (the first slit) and slit 82 (the other slit) in the left-right direction (second direction).

[0052] In the reinforcing plate 70, a slit 81 is provided on the side of the first outer peripheral edge 29A (one outer peripheral edge) in the left-right direction (second direction) and on the side further from the first outer peripheral edge 29A than the one adhesive portion. The slit 81 corresponds to an example of an outer slit and is positioned on the side of the first outer peripheral edge 29A than the center position in the left-right direction of the reinforcing plate 70. It is provided in the reinforcing plate 70 between the adhesive region near the first outer peripheral edge 29A (one outer peripheral edge) (the region that contacts the longitudinal adhesive medium 98 on the side of the first outer peripheral edge 29A) and the clamping structure 60A (outer peripheral edge-side structure), penetrating the reinforcing plate 70 in the thickness direction. The slit 81 (outer slit) is provided in a form that extends front to back along the first outer peripheral edge 29A (one outer peripheral edge) on the inside (towards the center in the left-right direction) of the "adhesion region near the one outer peripheral edge" described above.

[0053] In the reinforcing plate 70, another slit, slit 82, is provided on the side of the second outer peripheral edge 29B (other outer peripheral edge) in the left-right direction (second direction) and on the side further from the second outer peripheral edge 29B than the other adhesive portion. Slit 82 corresponds to an example of an outer slit and is positioned on the side of the second outer peripheral edge 29B from the center position in the left-right direction of the reinforcing plate 70. It is provided in the reinforcing plate 70 between the adhesive area near the second outer peripheral edge 29B (other outer peripheral edge) (the area that contacts the longitudinal adhesive medium 98 on the second outer peripheral edge 29B side) and the clamping structure 60B (outer peripheral edge-side structure), with the slit penetrating the reinforcing plate 70 in the thickness direction. Slit 82 (outer slit) is provided in a form that extends front to back along the second outer peripheral edge 29B (other outer peripheral edge) on the inside (towards the center in the left-right direction) of the "adhesion area near the other outer peripheral edge" described above.

[0054] In the reinforcing plate 70, at least a portion of the area on the side further from the first outer peripheral edge 29A than the slit 81 is a non-adhesive area that is not adhered to the top plate body 20 by the adhesive medium 98, and at least a portion of the area on the side further from the second outer peripheral edge 29B than the slit 82 is a non-adhesive area that is not adhered to the top plate body 20 by the adhesive medium 98. For example, the area on the lower surface of the top plate body 20 that is covered by the plate-shaped member 62 is a non-adhesive area where the adhesive medium 98 is not placed, and the area of ​​the reinforcing plate 70 that is covered by the plate-shaped member 62 (the area directly above each plate-shaped member 62) is a non-adhesive area that is not adhered to the top plate body 20 by the adhesive medium 98. More specifically, in the reinforcing plate 70, at least a portion of the area between slit 81 (one slit) and slit 82 (the other slit) is a non-adhesive area where the adhesive medium 98 is not interposed between it and the top plate body 20. In a typical example, the entire region between slit 81 (one slit) and slit 82 (the other slit) in the reinforcing plate 70 is a non-adhesive area.

[0055] The clamping structure 60C corresponds to one example of a clamping structure. Clamping structures 60A and 60B correspond to other examples of clamping structures. In the example in Figure 7, the reinforcing plate 70 is positioned to straddle the clamping structure 60C (one clamping structure) and the clamping structure 60A (the other clamping structure). Specifically, one reinforcing plate 70 continues continuously from the position of clamping structure 60C to the position of clamping structure 60A. The reinforcing plate 70 is sandwiched between the top plate body 20 and the plate-like member 62 at the position of clamping structure 60A, and is also sandwiched between the top plate body 20 and the plate-like member 62 at the position of clamping structure 60C. Furthermore, in the reinforcing plate 70, a slit 86 (inter-structural slit) is provided between the clamping structure 60C (one clamping structure) and the clamping structure 60A (the other clamping structure), with the slit penetrating the reinforcing plate 70 in the thickness direction. When a virtual line L1 is set on the upper surface of the reinforcing plate 70 that connects the packing 64C (one packing) located in the clamping structure 60C (one clamping structure) and the packing 64A (the other packing) located in the clamping structure 60A (the other clamping structure) by the shortest distance, the slit 86 (inter-structural slit) extends elongatedly in the direction intersecting the virtual line L1 at the position where it intersects the virtual line L1. From another perspective, if a virtual line L3 is set that connects the plate-shaped member 62C constituting the clamping structure 60C (one clamping structure) and the plate-shaped member 62A constituting the clamping structure 60A (the other clamping structure) by the shortest distance, the slit 86 extends elongated in the direction intersecting the virtual line L3 at the position where it intersects the virtual line L3.

[0056] Similarly, the reinforcing plate 70 is positioned to straddle the clamping structure 60C (one clamping structure) and the clamping structure 60B (the other clamping structure). Specifically, one reinforcing plate 70 continues continuously from the position of clamping structure 60C to the position of clamping structure 60A. The reinforcing plate 70 is sandwiched between the top plate body 20 and the plate-like member 62 at the position of clamping structure 60B, and is also sandwiched between the top plate body 20 and the plate-like member 62 at the position of clamping structure 60C. In the reinforcing plate 70, a slit 87 (inter-structural slit) is provided between the clamping structure 60C (one clamping structure) and the clamping structure 60B (the other clamping structure), with the slit penetrating the reinforcing plate 70 in the thickness direction. When a virtual line L2 is set on the upper surface of the reinforcing plate 70 to connect a packing 64C (one packing) located in the clamping structure 60C (one clamping structure) and a packing 64B (the other packing) located in the clamping structure 60B (the other clamping structure) via the shortest distance, the slit 87 (inter-structure slit) extends elongatedly in a direction that intersects with the virtual line L1 at the point where it intersects with the virtual line L2. From another perspective, when a virtual line L4 is set to connect a plate-shaped member 62C constituting the clamping structure 60C (one clamping structure) and a plate-shaped member 62B constituting the clamping structure 60B (the other clamping structure) via the shortest distance, the slit 87 extends elongatedly in a direction that intersects with the virtual line L4 at the point where it intersects with the virtual line L4.

[0057] 1-6. Examples of effects In the gas stove top plate 4, the area on the underside of the top plate body 20 that is covered by the plate-shaped member 62 is designated as a non-adhesive area where no adhesive medium 98 is placed. In this way, the reinforcing plate 70 and the top plate body 20 are not bonded by the adhesive medium 98 in the area covered by the plate-shaped member 62. For example, even if the expansion and contraction of the reinforcing plate 70 due to heat is greater than that of the top plate body 20, the area covered by the plate-shaped member 62 can tolerate a misalignment of the reinforcing plate 70 relative to the top plate body 20. Therefore, this top plate 4 can prevent or suppress "defects (e.g., peeling or damage) caused by differences in expansion and contraction between the top plate body 20 and the reinforcing plate 70 when they are bonded together in the area covered by the plate-shaped member 62." On the other hand, in the clamping structure 60, the annular protrusion 124 and the plate-shaped member 62 are sandwiched between the first peripheral portion 20Z of the top plate body 20 and the second peripheral portion 70Z of the reinforcing plate 70. Therefore, in the area covered by the plate-shaped member 62, the reinforcing plate 70 is held in a state pressed against the top plate body 20 even without the interposition of the adhesive medium 98. Moreover, since the packing 64 is positioned between the first peripheral portion 20Z of the top plate body 20 and the second peripheral portion 70Z of the reinforcing plate 70, even without the interposition of the adhesive medium 98 between the top plate body 20 and the reinforcing plate 70 in the area covered by the plate-shaped member 62, it is possible to prevent or suppress liquid (such as broth) from entering between the top plate body 20 and the reinforcing plate 70 from near the opening 21.

[0058] In the top plate 4, the decorative layer 26 is visible from above through the plate portion 24 (glass plate portion), thus enhancing its design appeal. However, in this top plate 4, the reinforcing plate 70 is bonded to the decorative layer 26 via an adhesive medium 98. For example, if the degree of expansion or contraction of the reinforcing plate 70 becomes greater than that of the top plate body portion 20 near the adhesive medium 98, there is a concern that the reinforcing plate 70 may shift position relative to the top plate body portion 20, potentially peeling off the decorative layer 26. Such "thermal effects" are more likely to be a problem near the opening 21 through which the gas burner 8 is inserted. In contrast, in the top plate 4, in the "area covered from below by the plate-like member 62" near the opening 21, the reinforcing plate 70 and the top plate body portion 20 are not bonded by the adhesive medium 98, but rather a sandwich structure 60 is formed, making the above-mentioned problems less likely to occur.

[0059] Even if the reinforcing plate 70 of the top plate 4 is misaligned relative to the top plate body 20 on the clamping structure 60A side, the effect of the relative displacement of the reinforcing plate 70 can be relieved by the slit 80. Similarly, even if the reinforcing plate 70 is misaligned relative to the top plate body 20 on the clamping structure 60C side, the effect of the relative displacement of the reinforcing plate 70 can be relieved by the slit 80. Therefore, with this top plate 4, the concentration of stress on the top plate body 20 due to the relative displacement of the reinforcing plate 70 can be reduced, and problems caused by stress concentration can be suppressed more effectively.

[0060] As shown in Figure 7, the top plate 4 has slits 86 and 87 that cross imaginary lines L1 and L2 that connect one packing (packing 64C) and the other packings (packings 64A and 64B) by the shortest distance. This allows the relative displacement of the reinforcing plate 70 to be effectively relieved in areas where stress concentration due to heat is likely to occur.

[0061] As shown in Figure 7, the top plate 4 can be reliably positioned by bonding the top plate body 20 and the reinforcing plate 70 with an adhesive medium 98 in the area near the outer edge 29 where the influence of the gas burner 8 is relatively small. On the other hand, near the outer edge structure (clamping structure 60A, 60B) where the influence of the gas burner 8 is relatively large, differences in expansion and contraction caused by combustion in the gas burner 8 are likely to occur between the reinforcing plate 70 and the top plate body 20. However, since the reinforcing plate 70 can be pressed and held against the top plate body 20 without using the adhesive medium 98, even if the above differences occur, problems such as peeling or damage are less likely to occur. Furthermore, since slits 81 and 82 (outer slits) are provided between the adhesive area near the outer edge 29 and the structural part near the outer edge (clamping structural parts 60A and 60B) of the reinforcing plate 70, even if a relative displacement of the reinforcing plate 70 with respect to the top plate body 20 occurs near the structural part near the outer edge, the effect of that relative displacement is relieved by the slits 81 and 82. This effectively prevents or suppresses problems such as peeling or damage caused by the effect of the relative displacement extending to the adhesive area.

[0062] The top plate 4 can secure a wider adhesive area along the outer edge 29 at a position closer to the outer edge 29, which is less affected by the gas burner 8. On the other hand, since slits 81 and 82 (outer slits) are provided along the outer edge 29, inside the adhesive area closer to the outer edge 29, the influence of the above relative displacement on the adhesive area can be effectively suppressed by efficiently arranging the slits 81 and 82 without making the openings arbitrarily large.

[0063] In the tabletop 4, the decorative layer 26 is visible from above through the plate portion 24 (glass plate portion), thus enhancing the design. However, in this tabletop 4, the reinforcing plate 70 is bonded to the decorative layer 26 via an adhesive medium 98. For example, if the degree of expansion or contraction of the reinforcing plate 70 becomes greater than that of the main body of the tabletop 20 near the adhesive medium 98, there is a concern that the reinforcing plate 70 may shift position relative to the main body of the tabletop 20, potentially peeling off the decorative layer 26. Such "thermal effects" are more likely to be a problem near the opening 21 through which the gas burner 8 is inserted. In contrast, in the tabletop 4, a portion of the reinforcing plate 70 near the outer edge 29, where the influence of the gas burner 8 is relatively small, is designated as the bonded portion, and this bonded portion is bonded to the main body of the tabletop 20. Therefore, the main body of the tabletop 20 and the reinforcing plate 70 can be reliably positioned by the adhesive medium 98 near the outer edge 29, where the influence of the gas burner 8 is relatively small. Furthermore, since the slit 80 is provided on the reinforcing plate 70 on the side further away from the outer edge 29 than the adhesive portion, even if a relative displacement of the reinforcing plate 70 with respect to the top plate body 20 occurs on the side further away from the outer edge 29 than the slit 80, the effect of that relative displacement is relieved by the slit 80. Therefore, it is possible to effectively prevent or suppress problems such as peeling or damage caused by the effect of the relative displacement extending to the adhesive area near the outer edge 29.

[0064] In the top plate 4, an opening 21 is provided in the top plate body 20 at a position between slit 81 (the first slit) and slit 82 (the other slit). Therefore, in the region of the reinforcing plate 70 between slit 81 (the first slit) and slit 82 (the other slit), differences in expansion and contraction due to the heat of the gas burner 8 are likely to occur in relation to the top plate body 20. In the top plate 4, a non-adhesive portion is provided in this region. Therefore, at the location of this non-adhesive portion, it is easier to prevent or suppress problems caused by "relative displacement of the reinforcing plate 70 while the top plate body 20 and the reinforcing plate 70 are bonded together." Furthermore, since the inner region between slit 81 (the first slit) and slit 82 (the other slit) and the outer adhesive region (the region of the first bonded portion and the region of the other bonded portion) are separated by slit 81 (the first slit) and slit 82 (the other slit), even if relative displacement due to heat occurs in the inner region, the effects of that relative displacement can be easily dissipated by slit 81 (the first slit) or slit 82 (the other slit). Therefore, it is possible to effectively prevent or suppress defects such as peeling or damage caused by the relative displacement affecting one bonded part and other bonded parts.

[0065] In the representative example of the top plate 4, the entire inner region between slit 81 (one slit) and slit 82 (the other slit) is a non-adhesive area. Therefore, even if the relative displacement described above occurs in the inner region, it is possible to more reliably prevent the adhesive from being forcibly peeled off in the inner region.

[0066] <Second Embodiment> The following description relates to a gas stove according to a second embodiment. The gas stove of the second embodiment differs from the first embodiment only in the configuration of the top plate. The top plate used in the gas stove of the second embodiment differs from the top plate 4 of the first embodiment only in the structure behind the rear end of the third clamping structure 60C shown in Figure 7, the presence of slit 83, and the omission of slits 86 and 87. It is identical to the top plate 4 of the first embodiment except for the structure in front of the rear end of the third clamping structure 60C, the presence of slit 83, and the omission of slits 86 and 87.

[0067] In the top plate of the second embodiment, the configuration in front of the dashed line Lz in Figure 19 is the same as that of the top plate 4 of the first embodiment, except that slit 83 is provided and slits 86 and 87 are omitted. Note that in the top plate of the second embodiment, the configuration in front of the dashed line Lz in Figure 19 may be the same as that of the top plate 4 of the first embodiment. In the top plate of the second embodiment, in the configuration of Figure 19, the outer edge of the reinforcing plate 70 is rectangular, and a longitudinal opening 210 is provided at the rear end, formed by the longitudinal opening of the reinforcing plate 70 and the longitudinal opening of the top plate body 20. This longitudinal opening is used as a grill exhaust port.

[0068] Although not shown in Figure 19, in the top plate of the second embodiment, which is partially shown in Figure 19, clamping structures 60A, 60B, and 60C with the same structure as in the first embodiment are provided near each opening 71, and function in the same way as in the first embodiment.

[0069] In the top plate body portion 20 shown in Figure 19, the configurations of the first outer peripheral edge portion 29A extending along the front-rear direction, the second outer peripheral edge portion 29B extending along the front-rear direction, and the third outer peripheral edge portion 29C extending along the left-right direction perpendicular to the front-rear direction are the same as those of the respective parts in the first embodiment. On the other hand, in the top plate body portion 20 shown in Figure 19, a fourth outer peripheral edge portion 29D extending along the left-right direction is further provided as an outer peripheral edge portion 29.

[0070] In Figure 19, the reinforcing plate 70 is provided with the following adhesive portions: a first adhesive portion near the first outer peripheral edge 29A (the portion that contacts the longitudinally oriented adhesive medium 98A of the adhesive medium 98 that is located on one side of the reinforcing plate 70 in the left-right direction); a second adhesive portion near the second outer peripheral edge 29B (the portion that contacts the longitudinally oriented adhesive medium 98B of the adhesive medium 98 that is located on the other side of the reinforcing plate 70 in the left-right direction); a third adhesive portion near the third outer peripheral edge 29C (the portion that contacts the longitudinally oriented adhesive medium 98C of the adhesive medium 98 that is located on the front end side of the reinforcing plate 70); and a fourth adhesive portion near the fourth outer peripheral edge 29D (the portion that contacts the longitudinally oriented adhesive medium 98D of the adhesive medium 98 that is located on the rear end side of the reinforcing plate 70).

[0071] In the reinforcing plate 70, a slit 81 (first slit) is provided on the side of the first outer peripheral edge 29A in the left-right direction and on the side further away from the first outer peripheral edge 29A than the first adhesive portion. In the reinforcing plate 70, a slit 82 (second slit) is provided on the side of the second outer peripheral edge 29B in the left-right direction and on the side further away from the second outer peripheral edge 29B than the second adhesive portion. Slits 81 and 82 have the same structure and function as slits 81 and 82 in the first embodiment. Slit 81 is provided as a through hole and elongated hole extending in the front-rear direction along the first outer peripheral edge 29A which extends in the front-rear direction. Slit 82 is provided as a through hole and elongated hole extending in the front-rear direction along the second outer peripheral edge 29B which extends in the front-rear direction.

[0072] In the reinforcing plate 70, a slit 83 (third slit) is provided on the third outer peripheral edge 29C side of the center position in the front-rear direction and on the side further from the third adhesive portion (the portion that contacts the longitudinal adhesive medium 98C in the left-right direction) and in a form that is aligned with the third adhesive portion that extends in the left-right direction. The slit 83 is provided as a through hole and elongated hole that extends in the left-right direction so as to be aligned with the third outer peripheral edge 29C that extends in the left-right direction. In the reinforcing plate 70, a slit 84 (fourth slit) is provided on the fourth outer peripheral edge 29D side of the center position in the front-rear direction and on the side further from the fourth adhesive portion 29D (the portion that contacts the longitudinal adhesive medium 98D in the left-right direction) and in a form that is aligned with the fourth adhesive portion that extends in the left-right direction. The slit 84 is provided as a through hole and elongated hole that extends in the left-right direction so as to be aligned with the fourth outer peripheral edge 29D that extends in the left-right direction. Specifically, as shown by the dashed line, an adhesive medium 98A similar to that of the first embodiment is provided between the reinforcing plate 70 and the top plate body 20 in a manner extending in the front-to-back direction, on the side of the first outer peripheral edge 29A beyond the slit 81 (first slit) in the left-to-right direction. Then, as shown by the dashed line, an adhesive medium 98B similar to that of the first embodiment is provided between the reinforcing plate 70 and the top plate body 20 in a manner extending in the front-to-back direction, on the side of the second outer peripheral edge 29B beyond the slit 82 (second slit) in the left-to-right direction. Furthermore, an adhesive medium 98C is provided between the reinforcing plate 70 and the top plate body 20 in a manner extending in the left-to-right direction, in front of the slit 83 (third slit), and an adhesive medium 98D is provided between the reinforcing plate 70 and the top plate body 20 in a manner extending in the left-to-right direction, in a manner extending in the left-to-right direction, in the direction behind the slit 84 (fourth slit).

[0073] In the top plate body portion 20, openings 21A, 21B, and 21C, similar to those in the first embodiment, are provided at positions between slit 81 (first slit) and slit 82 (second slit) in the left-right direction, and between slit 83 (third slit) and slit 84 (fourth slit) in the front-rear direction. At the positions of these openings 21A, 21B, and 21C, the same clamping structures 60A, 60B, and 60C (not shown) as in the first embodiment are provided to achieve the same structure and function as in the first embodiment. Furthermore, in the reinforcing plate 70, at least a portion of the area between slit 81 (first slit) and slit 82 (second slit), and the area between slit 83 (third slit) and slit 84 (fourth slit) is a non-adhesive portion that is not bonded by the adhesive medium 98. For example, the entire area between slit 81 (first slit) and slit 82 (second slit), and the entire area between slit 83 (third slit) and slit 84 (fourth slit) is a non-adhesive portion. For example, the adhesive medium 98 may be completely absent in the entire region between slit 81 (first slit) and slit 82 (second slit), or it may be provided only in a portion of the region between slit 81 (first slit) and slit 82 (second slit), excluding the region covered by the plate-like member 62. Alternatively, the adhesive medium 98 may be completely absent in the entire region between slit 83 (third slit) and slit 84 (fourth slit), or it may be provided only in a portion of the region between slit 83 (third slit) and slit 84 (fourth slit), excluding the region covered by the plate-like member 62.

[0074] In the second embodiment of the top plate 4, openings 21 are provided in the top plate body 20 at positions between the first and second slits, and between the third and fourth slits. Therefore, in the reinforcing plate 70, differences in expansion and contraction due to the heat of the gas burner 8 are likely to occur in the region surrounded by these slits in relation to the top plate body 20. In the top plate 4, a non-adhesive portion is provided in this region. Therefore, at the location of the non-adhesive portion, it is easier to prevent or suppress problems caused by relative displacement of the reinforcing plate 70 while the top plate body 20 and the reinforcing plate 70 are bonded together.

[0075] Furthermore, the inner region between the first and second slits and the adhesive region outside of them (the region of the first and second adhesive parts) are separated by the first and second slits, and the inner region between the third and fourth slits and the adhesive region outside of them (the region of the third and fourth adhesive parts) are separated by the third and fourth slits. Therefore, even if relative displacement due to heat occurs in the region surrounded by these slits, the slits surrounding the region can easily dissipate the effects of that relative displacement. Consequently, it is possible to effectively prevent or suppress defects such as peeling or damage caused by the effects of that relative displacement extending to the adhesive parts outside the slits surrounding the region (the first adhesive part, the second adhesive part, the third adhesive part, and the fourth adhesive part).

[0076] <Other Embodiments> The present invention is not limited to the embodiments described above and in the drawings. For example, any combination of the features of the embodiments described above or below is possible as long as it does not contradict each other. Furthermore, any feature of the embodiments described above or below may be omitted unless explicitly stated as essential. In addition, the embodiments described above may be modified as follows.

[0077] In the configuration shown in Figure 19 of the second embodiment, slits 86 and 87 are not provided, but as in Figure 7, slits 86 and 87 may be provided.

[0078] It should be noted that the embodiments disclosed herein are illustrative and not restrictive in all respects. The scope of the present invention is not limited to the embodiments disclosed herein, and is intended to include all modifications within the scope set forth in the claims or equivalents thereof. [Explanation of symbols]

[0079] 1: Gas stove 4: Top plate 8: Gas burner 20: Main body of the top panel 20Z: First peripheral area 21: Opening 24: Board part 26: Decorative layer 29: Outer edge 29A: First outer edge 29B: Second outer edge 29C: Third outer edge 29D: Fourth outer edge 60: Clamping structure 61: Ring component 62: Plate-shaped member 64: Packing 65: Connecting member 70: Reinforcement plate 70Z: Second peripheral area 71: Opening 72: Stepped section 73: Flat part 80: Slit 81: Slit 82: Slit 83: Slit 84: Slit 86: Slit 87: Slit 98: Adhesive medium 122: Cylindrical part 124: Annular protrusion 142: Opening 210: Longitudinal opening L1: Virtual line L2: Virtual line Lz: dash-dotted line

Claims

1. A top plate for a gas stove, which is installed on a gas stove. A tabletop body comprising: a glass plate section made of glass material and having an opening through which a gas burner is inserted; and a decorative layer stacked on the underside of the glass plate section and visible from above through the glass plate section; A reinforcing plate, which is made of a metal material and is bonded to the main body of the top plate from below the decorative layer, An adhesive medium that contacts a predetermined area of ​​the reinforcing plate and adheres the top plate body and the reinforcing plate, Equipped with, In the reinforcing plate, a portion of the reinforcing plate near any of the outer edges of the main body of the top plate is designated as a portion to be bonded to the main body of the top plate by the adhesive medium. In the reinforcing plate, a slit is provided on the side further away from the outer peripheral edge than the adhesive portion, with the slit penetrating the reinforcing plate in the thickness direction. In the reinforcing plate, at least a portion of the area on the side further away from the outer peripheral edge than the slit is a non-adhesive portion that is not adhered to the top plate body by the adhesive medium. A top plate for a gas stove.

2. In the reinforcing plate, the portion to be bonded is a longitudinal region along the outer peripheral edge, The slit is a longitudinal through-hole along the outer peripheral edge. A top plate for a gas stove according to claim 1.

3. The main body of the top plate is provided with one outer peripheral edge extending in a predetermined first direction and another outer peripheral edge extending in the first direction. In the reinforcing plate, a portion of one of the parts near the outer peripheral edge is the part to be bonded, In the reinforcing plate, a portion of the other outer peripheral edge is the other adhesive portion. In the reinforcing plate, one slit is provided on the side of one of the outer peripheral edges in a second direction perpendicular to the first direction, and on the side further away from the one of the outer peripheral edges than the one of the adhesive portions. In the reinforcing plate, another slit is provided on the other outer peripheral edge side in the second direction and on the side further away from the other outer peripheral edge than the other adhesive portion, In the main body of the top plate, the opening is provided at a position between one of the slits and the other slit in the second direction. In the reinforcing plate, at least a portion of the region between one slit and the other slit is the non-adhesive portion. A top plate for a gas stove according to claim 1 or claim 2.

4. In the reinforcing plate, the entire region between one slit and the other slit is the non-adhesive portion. A top plate for a gas stove according to claim 3.

5. The main body of the top plate is provided with a first outer peripheral edge extending along a predetermined front-to-back direction, a second outer peripheral edge extending along the front-to-back direction, a third outer peripheral edge extending along a left-to-right direction perpendicular to the front-to-back direction, and a fourth outer peripheral edge extending along the left-to-right direction, as the outer peripheral edges. The reinforcing plate is provided with a first adhesive portion near the first outer edge, a second adhesive portion near the second outer edge, a third adhesive portion near the third outer edge, and a fourth adhesive portion near the fourth outer edge, as the adhesive portions. In the reinforcing plate, the first slit is provided on the side of the first outer peripheral edge in the left-right direction and on the side further away from the first outer peripheral edge than the first adhesive portion. In the reinforcing plate, a second slit is provided on the side of the second outer peripheral edge in the left-right direction and on the side further away from the second outer peripheral edge than the second adhesive portion. In the reinforcing plate, the third slit is provided on the side of the third outer peripheral edge in the front-rear direction and on the side further away from the third outer peripheral edge than the third adhesive portion. In the reinforcing plate, the fourth slit is provided on the side of the fourth outer peripheral edge in the front-rear direction and on the side further away from the fourth outer peripheral edge than the fourth adhesive portion. In the main body of the top plate, the openings are provided at a position between the first slit and the second slit in the left-right direction, and at a position between the third slit and the fourth slit in the front-rear direction. In the reinforcing plate, at least a portion of the region between the first slit and the second slit, and the region between the third slit and the fourth slit, is the non-adhesive portion. A top plate for a gas stove according to claim 1 or claim 2.

6. A gas stove comprising a top plate for a gas stove according to claim 1 or claim 2.

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