Built-in stove

Abstract

To obtain a constitution which can easily attach a parking to a box body part and can suppress the come-off of the parking from the box body part after the attachment.SOLUTION: In a built-in stove 1, a fixing part 51 of a packing 50 comprises an upper-side coating part 53 for coating a hangout part 34 from above, a lower-side coating part 54 for coating the hangout part 34 from below, and a connecting part 55 for connecting the upper-side coating part 53 and the lower-side coating part 54. In the parking 50, a clearance between the upper-side coating part 53 and the lower-side coating part 54 is brought into an open state in a natural state that an extension part 52 does not receive a pressing force from an installation face 102A. By the installation of the built-in stove 1 to a kitchen counter 100, the clearance between the upper-side coating part 53 and the lower-side coating part 54 is brought into a closed state which is closed more than the open state in a pressing state that the extension part 52 receives the pressing force from the installation face 102A, and the hangout part 34 is brought into a closed state that the hangout part is sandwiched by the upper-side coating part 53 and the lower-side coating part 54.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a built-in stove. [Background technology]

[0002] Patent Document 1 discloses an example of a built-in stove that is used by dropping it into a counter hole opened in a countertop of a system kitchen. This built-in stove is provided with an engagement flange that protrudes from the outer periphery of the case opening and engages with the periphery of the counter hole, and an elastic packing is attached along the entire periphery. An engagement bent portion formed on the top plate abuts against the elastic packing from above. The annular packing is interposed between the periphery of the counter hole and the top plate, preventing broth and the like that spills from the top plate from entering the counter hole. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-28405 A Summary of the Invention [Problem to be solved by the invention]

[0004] The elastic packing in Patent Document 1 has an insertion slit around the entire inner circumference into which the outer periphery of the engagement flange is inserted. The opening width of this insertion slit is approximately the same as the width of the outer periphery of the engagement flange. Therefore, it is difficult to insert the outer periphery of the engagement flange into the opening of the insertion slit, and it is time-consuming to attach the elastic packing to the engagement flange.

[0005] One object of the present disclosure is to provide a technology that makes it easy to attach a gasket to a housing part of a built-in stove that is installed by passing it through a hole formed in a mounting base, and that can prevent the gasket from coming off the housing part after attachment. [Means for solving the problem]

[0006] The built-in stove disclosed in this disclosure is a housing portion including a peripheral wall portion and a protruding portion formed at an upper end portion of the peripheral wall portion so as to protrude outward in an annular shape, the housing portion being configured with an upper end side being open; a top plate attached in a configuration that covers the protruding portion from above and closes the housing portion; a packing provided along the protruding portion of the housing; having A built-in stove is installed on a mounting table having a mounting surface around a hole, and the protruding portion is supported on the mounting surface and the built-in stove is disposed through the hole, The packing is a fixing portion disposed annularly along the protruding portion and fixed to the protruding portion; an extension portion disposed annularly on the outer side of the fixing portion; Equipped with The fixing portion is an upper covering portion that covers the protruding portion from above; A lower covering portion that covers the protruding portion from below; a connecting portion that connects the upper covering portion and the lower covering portion; Equipped with The packing is When the extension portion is in a natural state where it is not subjected to a pressing force from the placement surface, the upper covering portion and the lower covering portion are in an open state, When the built-in stove is installed on the mounting base, in a pressed state in which the extension portion receives a pressing force from the mounting surface, the space between the upper covering portion and the lower covering portion is closed more than in the open state, and the upper covering portion and the lower covering portion sandwich the extension portion in a closed state. Effect of the Invention

[0007] According to the technology disclosed herein, in a built-in stove that is installed by passing it through a hole formed in the mounting base, it is easy to attach a gasket to the housing part and it is possible to prevent the gasket from coming off the housing part after attachment. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view that illustrates a schematic example of a built-in stove according to a first embodiment. [Diagram 2] FIG. 2 is a plan view of the built-in stove of FIG. [Diagram 3] FIG. 3 is a cross-sectional view showing a schematic example of the cross section AA of FIG. 2 together with a conceptual diagram of a counter kitchen. [Figure 4] FIG. 4 is a plan view that illustrates a schematic example of the built-in stove in FIG. 1 with a top plate removed. [Diagram 5] FIG. 5 is a side view of the configuration of FIG. [Figure 6] FIG. 6 is a cross-sectional view that diagrammatically illustrates a cross section taken along line CC in FIG. [Figure 7] FIG. 7 is a cross-sectional view of the packing in its natural state, and FIG. 8 is a cross-sectional view of the packing extracted from the original state. [Figure 8] FIG. 8 is an enlarged schematic cross-sectional view of a portion of cross section taken along line BB of FIG. [Figure 9] FIG. 9 is a cross-sectional view showing the configuration in the position shown in FIG. 8 when installed on a kitchen counter. [Figure 10] FIG. 10 is an enlarged cross-sectional view that shows, in an enlarged manner, a part of the cross section shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The following describes exemplary embodiments of the present disclosure. The following exemplary features [1] to [5] may be combined in any compatible combination.

[0010] [1] A housing part including a peripheral wall part and a protruding part formed so as to protrude outward in an annular shape at an upper end part of the peripheral wall part, the housing part being configured with an open upper end side; a top plate attached in a configuration that covers the protruding portion from above and closes the housing portion; a packing provided along the protruding portion of the housing; having A built-in stove is installed on a mounting table having a mounting surface around a hole, and the protruding portion is supported on the mounting surface and the built-in stove is disposed through the hole, The packing is a fixing portion disposed annularly along the protruding portion and fixed to the protruding portion; an extension portion disposed annularly on the outer side of the fixing portion; Equipped with The fixing portion is an upper covering portion that covers the protruding portion from above; A lower covering portion that covers the protruding portion from below; a connecting portion that connects the upper covering portion and the lower covering portion; Equipped with The packing is When the extension portion is in a natural state where it is not subjected to a pressing force from the placement surface, the upper covering portion and the lower covering portion are in an open state, In a pressing state in which the extension portion receives a pressing force from the placement surface due to the installation of the built-in stove on the placement stand, the space between the upper covering portion and the lower covering portion is closer than in the open state, and the protruding portion is sandwiched between the upper covering portion and the lower covering portion, resulting in a closed state. Built-in stove.

[0011] In the built-in stove described in [1], when the extension part is in a natural state where it is not subjected to a pressing force from the mounting surface, the packing is in an open state (more open than the closed state) between the upper covering part and the lower covering part. Therefore, in the mounting process of mounting the packing, it is easy to insert the protruding part between the upper covering part and the lower covering part, and it is easy to mount the packing to the protruding part. On the other hand, when the built-in stove is placed on the mounting base and the extension part is subjected to a pressing force from the mounting surface, the upper covering part and the lower covering part are in a closed state (more closed than the open state), and in this closed state, the protruding part is sandwiched between the upper covering part and the lower covering part. In other words, when the built-in stove is placed on the mounting base, the fixing part acts to be firmly fixed, and this action makes it possible to prevent the packing from coming off the protruding part. Therefore, this built-in stove can achieve both easy installation of the gasket and strong fixation of the gasket.

[0012] [2] A built-in stove as described in [1], wherein the extension portion extends to a lower position as it moves away from the fixed portion in a natural state where it is not receiving any pressing force from the placement surface.

[0013] The built-in stove described in [2] can increase the pressing force that the extension part receives from the mounting surface when the extension part is placed in contact with the mounting surface, and can increase the contact area of ​​the extension part with the mounting surface. Therefore, it is easier to ensure adhesion between the extension part and the mounting surface.

[0014] [3] A built-in stove as described in [1] or [2], wherein the upper surface of the gasket has a convex portion that is convex upward, and the lower surface of the gasket has a curved portion that is curved so as to be concave upward, at least a portion of the convex portion is provided on the extending portion side relative to the upper covering portion, and at least a portion of the curved portion is provided on the extending portion side relative to the lower covering portion.

[0015] In the built-in stove described in [3], when the extension is pushed up, the convex portion is less likely to deform, and the upper covering portion is more likely to displace downward while the shape around the convex portion is more likely to be maintained. Therefore, when the extension is pushed up by the mounting surface during installation, this built-in stove is more likely to prevent the transmission of force from being hindered by bending around the convex portion, and the force that the extension receives from the mounting surface is easily used to transition to the closed state. Furthermore, since the curved portion that curves upward is provided closer to the extension than the lower covering portion, when the extension is pushed up, the area around the lower surface is more likely to smoothly transition to a shape suitable for the mounting surface.

[0016] [4] A built-in stove described in any one of [1] to [3], wherein the gasket has a straight portion in which the fixing portion extends in a straight line along the protrusion portion, and in a cross section perpendicular to the direction in which the straight portion extends, the maximum value of the width in the vertical direction and in the direction perpendicular to the extending direction at the intermediate portion between the upper covering portion and the lower covering portion at the connecting portion is greater than the maximum thickness of the upper covering portion.

[0017] In the built-in stove described in [4], the width of the middle part of the connecting part (the part located between the upper and lower covering parts in the vertical direction) is relatively large, so that when the extension part receives a pressing force from the mounting surface, the vicinity of the middle part is less likely to deform, and bending of the packing upward (specifically bending of the packing upward near the connecting part) is easily suppressed. Therefore, the packing can more easily transmit the pressing force that the extension part receives from the mounting surface to the fixed part.

[0018] [5] A built-in stove described in any one of [1] to [4], wherein the gasket has a straight portion in which the fixing portion extends linearly along the protrusion portion, and in a cross section perpendicular to the direction in which the straight portion extends, the extension portion has a tapered shape toward its own extension direction.

[0019] In the built-in stove described in [5], the tip end portion of the extension is easily deformed by pressure from the support surface, and is easily changed into a shape that matches the support surface. Therefore, this built-in stove is likely to ensure close contact between the extension and the support surface of the support stand after installation. On the other hand, the base end portion of the extension is less likely to deform when the extension is subjected to pressure from the support surface. Therefore, this built-in stove is likely to prevent the entire extension from bending significantly upward, and it is even easier to ensure close contact between the extension and the support surface.

[0020] [6] A built-in stove described in any one of [1] to [5], wherein in the natural state, the gasket is held in the protrusion so that the upper surface and inner end of the lower covering portion are in close contact with the protrusion while the intermediate portion between the upper covering portion and the lower covering portion at the connecting portion is in close contact with the protrusion.

[0021] The built-in stove described in [6] makes it possible to easily attach the gasket before placing it on the base, while also preventing the gasket from coming off the protruding portion in its natural state after attachment (before being placed on the base).

[0022] First Embodiment In the following, a built-in stove 1 equipped with gas burners 5, 6 for a gas stove according to the first embodiment will be described.

[0023] 1. Overview of Built-in Stove 1

[0024] The built-in stove 1 has an external appearance as shown in FIG. 1 and FIG. 2, and an internal structure as shown in FIG. 3. The built-in stove 1 is installed in a state in which a part (such as a peripheral wall part 32 described later) is accommodated inside the kitchen counter 100 through a counter hole 104 formed in a predetermined mounting surface 102A of the kitchen counter 100 conceptually shown in FIG. 3, and a part (the protruding part 34) of the housing part 30 is supported by the mounting surface 102A around the counter hole 104. The kitchen counter 100 corresponds to an example of a "mounting stand" in the present disclosure. The counter hole 104 corresponds to an example of a "hole part" in the present disclosure. As shown in FIG. 1, the built-in stove 1 is configured by a top plate 2 formed in a plate shape and detachably attached to the housing part 30 (see FIG. 4 to FIG. 6, etc.). Note that FIG. 3 is a diagram showing the state immediately before the built-in stove 1 is mounted on the mounting surface 102A, and is a diagram showing the state when the packing 50 is in a natural state.

[0025] 4 and 5, the housing 30 is configured as a box-shaped case body with an open upper end 30A side and includes a peripheral wall 32 arranged around an accommodation space that accommodates various components such as the gas burners 5 and 6, and a protruding portion 34 formed to protrude outward in an annular shape at the upper end of the peripheral wall 32. The peripheral wall 32 has walls arranged on the front, rear, left and right sides, and is configured to accommodate various components such as the gas burners 5 and 6 in the internal space surrounded by these walls.

[0026] The top plate 2 shown in Figs. 1 and 2 is a plate-shaped part, and is assembled to the housing part 30 from above in such a way that it covers the upper end 30A (Figs. 4, 5, etc.) of the housing part 30, thereby closing the opening formed on the upper end side of the housing part 30. The top plate 2 has a rectangular peripheral part 2B, which is arranged to cover the upper side of the protruding part 34 of the housing part 30. In this configuration, the peripheral part 2B is a general term for the covering part of the top plate 2 that covers the protruding part 34 and the part that is arranged on the outside of the covering part. The top plate 2 functions as the upper surface part of the built-in stove 1 in a state where it is assembled to the housing part 30 as shown in Fig. 2. The top plate 2 is detachable from the housing part 30, and openings are formed on both the left and right sides of the top plate 2 in a manner that penetrates the top plate 2 in the thickness direction. In this configuration, the top plate 2 is provided with a flat portion 2A having a flat upper surface around the gas burners 5 and 6, and the direction perpendicular to the upper surface of this flat portion 2A is the up-down direction of the built-in stove 1. In addition, the direction along the rising direction of both the left and right walls of the peripheral wall portion 32 is the up-down direction.

[0027] As shown in Figs. 1 and 2, a gas burner 5 is provided inside the opening on the left side of the top plate 2, and a gas burner 6 is provided inside the opening on the right side. Trivets 11 and 12 are provided above the respective openings. Trivets 11 and 12 are configured so that a cooking vessel such as a cooking pot (not shown) can be placed on the upper surface of each. The gas burners 5 and 6 function to heat the cooking vessel placed on the trivets 11 and 12 by burning combustion gas. In this configuration, the direction perpendicular to the surface of a flat plate material placed on the trivets 11 and 12 corresponds to the up-down direction of the built-in stove 1. A sensor unit 15 is provided at the center of the gas burner 5, and a sensor unit 16 is provided at the center of the gas burner 6. On the upper surface of the built-in stove 1, in the areas near the front end and the right end of the top plate 2, ignition switches 21, 22 are provided through the top plate 2, the left ignition switch 21 is a switch for igniting the gas burner 5, and the right ignition switch 22 is a switch for igniting the gas burner 6. In the area near the rear end of the top plate 2, an exhaust cover part 13 is configured as a part of the top plate 2 in a manner that covers a grill exhaust port (not shown), and this exhaust cover part 13 has a plurality of exhaust holes 13A. On the front surface of the built-in stove 1, a grill door 17 and a grill ignition switch 23 are provided. The grill ignition switch 23 is configured as a switch for igniting the grill burner (not shown).

[0028] 2. Packing and its peripheral components As shown in FIGS. 4 to 6, the packing 50 is provided along the protruding portion of the casing 30, and is attached in an annular shape around the protruding portion . In this configuration, the peripheral wall portion 32 is formed with front, rear, left and right wall portions (front wall portion 32A, rear wall portion 32B, and a pair of side wall portions (side wall portion 32C and the side wall portion opposite it)), and the overhang portion 34 includes a front overhang portion (overhang portion extending along the left-right direction) provided so as to overhang forward at the upper end portion of the front wall portion 32A, a rear overhang portion (overhang portion extending along the left-right direction) provided so as to overhang rearward at the upper end portion of the rear wall portion 32B, a overhang portion on one side in the left-right direction (overhang portion extending along the front-to-rear direction) provided so as to overhang to one side at the upper end portion of the side wall portion on one side in the left-right direction (the side wall portion opposite side wall portion 32C), and a overhang portion on the other side in the left-right direction (overhang portion extending along the front-to-rear direction) provided so as to overhang the other side at the upper end portion of the side wall portion 32C on the other side in the left-right direction. The overhanging portion 34 is configured in a rectangular frame shape by connecting the front overhanging portion, the rear overhanging portion, the overhanging portion on one side in the left-right direction, and the overhanging portion on the other side in the left-right direction. A packing 50 is arranged along the outer edge (outer peripheral edge) of the overhanging portion 34 configured in this manner. Of the packing 50, the portion arranged along the front end portion (front overhanging portion) of the overhanging portion 34 extends in the left-right direction, the portion arranged along the rear end portion (rear overhanging portion) of the overhanging portion 34 extends in the left-right direction, the portion arranged along one end side portion in the left-right direction of the overhanging portion 34 (overhanging portion on one side in the left-right direction) extends in the front-rear direction, and the portion arranged along the other end side portion in the left-right direction of the overhanging portion 34 (overhanging portion on the other side in the left-right direction) extends in the front-rear direction.

[0029] 7 to 10 are views of a cross section perpendicular to the direction in which the packing 50 (fixing portion 51 described later) extends along the overhang portion 34. FIG. 8 shows an enlarged view of a portion of the cross section BB in the configuration of FIG. 2 (the vicinity of a portion of the packing 50 arranged along the left end portion (left overhang portion) of the overhang portion 34). FIG. 7 is a view showing the packing 50 extracted from FIG. 8. At the position of the cut surface shown in FIG. 8, the direction in which the overhang portion 34 (specifically, the left end portion (left overhang portion) of the overhang portion 34) extends is the front-rear direction, so the direction in which the packing 50 (fixing portion 51 described later) extends along the overhang portion 34 is also the front-rear direction. Therefore, the cross section of FIG. 8 is a cross section perpendicular to the front-rear direction (a cross section parallel to the left-right direction and the up-down direction). 9 is a cross section at the same position as FIG. 8 when the built-in stove 1 is installed on the kitchen counter 100, and this cross section is also perpendicular to the front-rear direction (parallel to the left-right direction and the up-down direction). Meanwhile, FIG. 10 shows an enlarged view of a part of the cross section shown in FIG. 3 (the vicinity of the part of the packing 50 arranged along the front end part (front overhang) of the overhang part 34). At the position of the cut surface shown in FIG. 10, the direction in which the overhang part 34 (specifically, the front end part (front overhang) of the overhang part 34) extends is the left-right direction, so the direction in which the packing 50 (fixing part 51 described later) extends along the overhang part 34 is also the left-right direction. Therefore, the cross section of FIG. 10 is a cross section perpendicular to the left-right direction (cross section in a plane parallel to the front-rear direction and the up-down direction).

[0030] 8, a first plate portion 34A, a second plate portion 34B, and a third plate portion 34C are provided on the outer edge portion (outer peripheral portion) of the overhanging portion 34 when viewed in a cross section perpendicular to the direction in which the packing 50 extends along the overhanging portion 34. The first plate portion 34A is a plate portion that overhangs outward from the upper end of the peripheral wall portion 32. The second plate portion 34B is a plate portion that rises from the end portion on the overhanging side of the first plate portion 34A. The third plate portion 34C is a plate portion that overhangs outward from the upper end of the second plate portion 34B.

[0031] When the packing 50 is not attached to the protruding portion 34, it is in a natural state as shown in Fig. 7. When the packing 50 is attached to the protruding portion 34, it is in a natural state as shown in Fig. 8. When the built-in stove 1 is installed on the kitchen counter 100, it is deformed from its natural state as shown in Figs. 9 and 10. As shown in Figs. 7 to 10, the packing 50 has a ring-shaped rectangular frame-like shape, and the cross section of the packing 50 cut in a plane perpendicular to the extension direction at each position has the same cross-sectional shape at any position in the circumferential direction of the packing 50.

[0032] The packing 50 includes a fixed portion 51 and an extending portion 52 . The fixing portion 51 is disposed in an annular shape along the overhanging portion 34 configured in a flange shape at the upper end portion 30A of the housing portion 30, and is fixed to the periphery of the overhanging portion 34. As shown in FIG. 7, the fixing portion 51 has an upper covering portion 53, a lower covering portion 54, and a connecting portion 55. The upper covering portion 53 covers the overhanging portion 34 from above. The lower covering portion 54 covers the overhanging portion 34 from below. The connecting portion 55 connects the upper covering portion 53 and the lower covering portion 54. The upper covering portion 53, the lower covering portion 54, and the connecting portion 55 are integrally formed and inseparable.

[0033] As shown in FIG. 7, the upper covering portion 53 includes an upper body portion 53A and a protruding portion 53B. The upper body portion 53A extends from the upper end of the connecting portion 55. When viewed in a cross section perpendicular to the extending direction of the packing 50, the upper body portion 53A extends obliquely upward so as to be located at an upper position as it moves away from the connecting portion 55. The protruding portion 53B protrudes downward from the tip of the upper body portion 53A. Specifically, when viewed in a cross section perpendicular to the extending direction of the packing 50, the protruding portion 53B extends obliquely downward so as to be located at a lower position as it moves away from the upper body portion 53A. On the outer side (the connecting portion 55 side) of the protruding portion 53B, a rib-shaped inner convex portion 53C protruding toward the outer side (the connecting portion 55 side) is provided. The lower end surface of the protruding portion 53B is a surface parallel to the horizontal plane.

[0034] 7, the lower covering portion 54 includes a lower main body portion 54A and a lower protrusion portion 54B. The lower main body portion 54A extends from the lower end of the connecting portion 55. When viewed in a cross section perpendicular to the extension direction of the packing 50, the lower main body portion 54A extends horizontally. The lower protrusion portion 54B is provided on the lower surface of the lower main body portion 54A at a position slightly from the tip end toward the base end. The lower protrusion portion 54B is formed in a rib shape so as to be convex downward.

[0035] 7, when viewed in a cross section perpendicular to the extension direction of the packing 50, the connecting portion 55 has a horizontal width that widens downward. The upper surface of the connecting portion 55 is continuous with the upper surface of the upper covering portion 53.

[0036] The extension portion 52 is configured to be elastically deformable. The extension portion 52 is arranged in an annular shape so as to protrude outward from the connecting portion 55 outside the fixing portion 51 configured in an annular shape. As shown in FIG. 7, the extension portion 52 is integrally connected to the connecting portion 55 and arranged in an annular shape protruding outward from the connecting portion 55. Specifically, when viewed in a cross section perpendicular to the direction in which the packing 50 extends, the extension portion 52 extends from the position of the connecting portion 55 as a starting point to a side (outward) away from the connecting portion 55. Specifically, the shape of the extension portion 52 in the cross section extends obliquely downward so as to be positioned lower as it moves away from the connecting portion 55.

[0037] As shown in FIG. 7, the packing 50 has a convex portion 50A and a curved portion 50B. The convex portion 50A is provided on the extending portion 52 side of the upper covering portion 53. The convex portion 50A is provided in a region AR1 on the upper surface portion 50C of the packing 50, which is outside the upper covering portion 53. The region AR1 is specifically a region formed by the upper surface portion of the connecting portion 55 and the upper surface portion of the extending portion 52. The boundary between the upper covering portion 53 and the connecting portion 55 is shown by a dashed line in FIG. 7. In the region AR1, only the convex portion 50A is provided, and no other recesses or the like are provided. The convex portion 50A is curved so as to be convex upward. The curved portion 50B is provided on the extending portion 52 side of the lower covering portion 54. The curved portion 50B is provided in a region AR2 on the lower surface portion 50D of the packing 50, which is outside the lower covering portion 54. The curved portion 50B is curved so as to be recessed toward the upper side. Specifically, the region AR2 is a region formed by the lower surface portion of the connecting portion 55 and the lower surface portion of the extending portion 52. The boundary between the lower covering portion 54 and the connecting portion 55 is shown by a dashed line in FIG. 7. In the region AR2, only the curved portion 50B is provided, and no other recesses or the like are provided. At least a part of the convex portion 50A and at least a part of the curved portion 50B overlap in the vertical direction. Specifically, the entire convex portion 50A overlaps with the entire curved portion 50B in the vertical direction. Since the packing 50 has the convex portion 50A and the curved portion 50B, when the extending portion 52 is pushed up, the convex portion 50A is less likely to deform, and the upper covering portion 53 is more likely to be displaced downward while the shape around the convex portion 50A is more likely to be maintained. Therefore, when the extension portion 52 is pushed up by the mounting surface 102A during installation, this built-in stove 1 can easily prevent the transmission of force from being hindered by bending near the convex portion 50A, and can easily utilize the force that the extension portion 52 receives from the mounting surface 102A to transition to the closed state. Furthermore, because the curved portion 50B that curves so as to be concave upward is provided closer to the extension portion 52 than the lower covering portion 54, the vicinity of the lower surface can easily transition smoothly to a shape suitable for the mounting surface 102A when the extension portion 52 is pushed up.

[0038] 4, the packing 50 has a plurality of linear portions 59 (specifically, portions of the packing 50 itself extending linearly along the protruding portion 34) where the fixing portion 51 extends linearly along the protruding portion 34. In a cross section perpendicular to the direction in which the linear portions 59 extend, the maximum value of the width of an intermediate portion 55A between the upper covering portion 53 and the lower covering portion 54 at the connecting portion 55 is greater than the maximum thickness of the upper covering portion 53. The width direction (width direction) of the intermediate portion 55A is perpendicular to the up-down direction and the direction in which the linear portions 59 extend. 4, the packing 50 is provided with a pair of linear portions 59W, 59X in which the fixing portion 51 extends linearly in the front-rear direction so as to be aligned with the respective portions 34W, 34X in the protruding portion 34 extending in the front-rear direction (specifically, a pair of portions in the protruding portion 34 arranged such that the outer edges (specifically, the side ends of the housing portion) extend along the front-rear direction). Furthermore, the packing 50 is provided with a pair of linear portions 59Y, 59Z in which the fixing portion 51 extends linearly in the left-right direction so as to be aligned with the respective portions 34Y, 34Z in the protruding portion 34 extending in the left-right direction (specifically, a pair of portions in the protruding portion 34 arranged such that the outer edges (specifically, the front and rear ends of the housing portion) extend along the left-right direction). In the packing 50, in each of the linear portions 59W, 59X (portions of the packing 50 itself extending linearly along the front-rear direction) where the fixing portion 51 extends linearly along the front-rear direction, the maximum value of the width of the intermediate portion 55A between the upper covering portion 53 and the lower covering portion 54 in the connecting portion 55 is greater than the maximum value of the thickness of the upper covering portion 53 in a cross section perpendicular to the direction in which the linear portions 59W, 59X extend (front-rear direction). In this case, the width direction of the intermediate portion 55A is the left-right direction. In addition, in each of the linear portions 59Y, 59Z extending linearly left-right, the maximum value of the width of the intermediate portion 55A between the upper covering portion 53 and the lower covering portion 54 in the connecting portion 55 is greater than the maximum value of the thickness of the upper covering portion 53 in a cross section perpendicular to the direction in which the linear portions 59Y, 59Z extend (left-right direction). In this case, the width direction of the intermediate portion 55A is the front-rear direction.

[0039] FIG. 8 is a cross-sectional view that shows a schematic cross section cut in a plane direction (a plane direction parallel to the left-right direction and the up-down direction) perpendicular to the direction in which the linear portion 59W extends (front-rear direction) at the position of the linear portion 59W, and FIG. 7 is a cross-sectional view in which the packing is extracted from FIG. 8. All linear portions 59 have the same cross-sectional shape as FIG. 7. In FIG. 7, the portion located between the upper covering portion 53 and the lower covering portion 54 in the connecting portion 55 is the middle portion 55A. The maximum width of the middle portion 55A in the direction perpendicular to the up-down direction (horizontal direction) is L1. In the example of FIG. 7, the width of the lower end position of the middle portion 55A is the maximum width L1 of the middle portion 55A. In the example of FIG. 7, the thickness of the upper covering portion 53 at the middle position in the direction in which the upper covering portion 53 extends (extension direction) is the maximum thickness L2 of the upper covering portion 53. L1 is greater than L2. The thickness direction of the upper covering part 53 is, for example, a direction perpendicular to the surface (flat surface) of the flat part 53Z that forms at least a part of the lower surface of the upper covering part 53, and in the example of Fig. 7, it is the plate thickness direction of the upper covering part 53 configured in a plate shape. In this way, by making the width of the middle part 55A of the connecting part 55 relatively large, the connecting part 55 becomes difficult to deform when the extending part 52 receives a pressing force from the mounting surface 102A, and it becomes easy to suppress the bending of the packing 50 upward. Therefore, the packing 50 becomes easy to transmit the pressing force that the extending part 52 receives from the mounting surface 102A to the fixing part 51.

[0040] The extending portion 52 has a tapered shape toward its own extension direction in a cross section perpendicular to the extension direction of the linear portion 59. As described above, the linear portion 59 includes linear portions 59W, 59X, 59Y, and 59Z. With this configuration, the tip side portion of the extending portion 52 is easily deformed by pressure from the mounting surface 102A and easily changes its shape to match the mounting surface 102A. Therefore, the built-in stove 1 is likely to ensure close contact between the extending portion 52 and the mounting surface 102A of the kitchen counter 100 after installation. On the other hand, the base end side portion of the extending portion 52 is unlikely to deform when the extending portion 52 is subjected to pressure from the mounting surface 102A. Therefore, the built-in stove 1 is likely to prevent the entire extending portion 52 from bending significantly upward, and is more likely to ensure close contact between the extending portion 52 and the mounting surface 102A.

[0041] The shape of packing 50 described above (the shape in a cross section perpendicular to the extension direction of packing 50 shown in FIG. 7) is formed over the entire circumference, and the same shape appears at any position in the circumferential direction of packing 50.

[0042] 3. Assembling the packing As shown in FIG. 8, the packing 50 is assembled to the overhanging portion 34 in a natural state. The overhanging portion 34 (specifically, the third plate portion 34C) is inserted into the space SP between the upper covering portion 53 and the lower covering portion 54. The packing 50 is held by the overhanging portion 34 such that the upper surface portion 54C and the inner end portion 54D of the lower covering portion 54 are in close contact with the overhanging portion 34 in a natural state, while the middle portion 55A of the connecting portion 55 is in close contact with the overhanging portion 34. The inner end portion 54D is the inner edge portion of the annular lower covering portion 54 in the annular packing 50. In the cross section shown in FIG. 7 and FIG. 8, the inner end portion 54D is the tip portion (the end portion opposite to the connecting portion 55 side) of the lower covering portion 54. Specifically, the end portion of the lower covering portion 54 is in contact with the outer surface of the second plate portion 34B (the surface on the overhanging side of the third plate portion 34C). The upper surface of the lower covering part 54 is in contact with the lower surface of the third plate part 34C. The base end of the upper covering part 53 is in contact with the upper surface of the third plate part 34C. The middle part 55A of the connecting part 55 (specifically, the inner edge part between the upper covering part 53 and the lower covering part 54 in the annular connecting part 55) is in contact with the outer edge part of the third plate part 34C. The packing 50 is assembled to the protruding part 34 in such a natural state, which makes it easy to attach the packing 50 before placing it on the kitchen counter 100. On the other hand, it is also possible to prevent the packing 50 from coming off the protruding part 34 in the natural state after the packing 50 is attached (the state before placing it on the kitchen counter 100).

[0043] The state of the packing 50 shown in FIG. 8 is a natural state in which the extension portion 52 is not subjected to a pressing force from the placement surface 102A. As shown in FIG. 7 and FIG. 8, the natural state of the packing 50 is a state in which the gap between the upper covering portion 53 and the lower covering portion 54 is wider than the closed state shown in FIG. 9 (a state in which both the upper covering portion 53 and the lower covering portion 54 are closed so as to contact the third plate portion 34C). The natural state of the packing 50 shown in FIG. 7 and FIG. 8 is a state in which no object other than the built-in stove 1 is in contact with the part of the extension portion 52 below the lower covering portion 54 (more specifically, a state in which no object other than the extension portion 52 is in contact). In the cross sections of FIG. 7 and FIG. 8, when the packing 50 is in the natural state, the part of the upper covering portion 53 that covers the third plate portion 34C is inclined so as to move away from the third plate portion 34C as it moves away from the connecting portion 55. In FIG. 8, the packing 50 is in an open state with the upper covering portion 53 and the lower covering portion 54 open. In the open state of the packing 50, a space SP is formed between the upper covering portion 53 and the lower covering portion 54. In the open state of the packing 50, when a cross section perpendicular to the extending direction of the packing 50 is seen as in FIG. 8, an opening AP (an opening formed by the tip (projecting portion 53B) of the upper covering portion 53 and the tip of the lower covering portion 54) of the space SP between the upper covering portion 53 and the lower covering portion 54 is wider than the plate thickness of the protruding portion 34. In the open state of the packing 50, when a cross section perpendicular to the extending direction of the packing 50 is seen as in FIG. 8, the upper main body portion 53A and the lower main body portion 54A are arranged so as to widen toward the inside (the opposite side to the connecting portion 55). 8, when a cross section perpendicular to the extension direction of the packing 50 is viewed, the tip (projection 53B) of the upper covering portion 53 and the tip of the lower covering portion 54 are spaced apart in the diagonal vertical direction. When the packing 50 is in the open state, it becomes easier to insert the overhanging portion 34 between the upper covering portion 53 and the lower covering portion 54, and it becomes easier to attach the packing 50 to the overhanging portion 34.

[0044] By installing the built-in stove 1 on the kitchen counter 100, the extension 52 is in a pressed state in which it receives a pressing force from the mounting surface 102A. In such a pressed state, the packing 50 is in a closed state in which the gap between the upper covering portion 53 and the lower covering portion 54 is closed more than in the open state, as shown in FIG. 9. In the closed state of the packing 50, the protruding portion 34 is sandwiched between the upper covering portion 53 and the lower covering portion 54. Specifically, the extension 52 receives a pressing force from the mounting surface 102A and is displaced upward so as to rotate around the connecting portion 55 as a fulcrum. In response to the deformation of the extension 52, the upper covering portion 53 is displaced downward so as to rotate around the connecting portion 55 as a fulcrum. At this time, the lower protruding portion 54B is in contact with the mounting surface 102A, and the lower covering portion 54 is sandwiched between the lower surface of the third plate portion 34C and the mounting surface 102A.

[0045] In the closed state of the packing 50, the space SP between the upper covering portion 53 and the lower covering portion 54 is narrower than in the open state. In the closed state of the packing 50, when a cross section perpendicular to the extension direction of the packing 50 is viewed as shown in FIG. 9, the opening AP of the space SP between the upper covering portion 53 and the lower covering portion 54 is smaller than in the open state. In the closed state of the packing 50, when a cross section perpendicular to the extension direction of the packing 50 is viewed as shown in FIG. 9, the upper main body portion 53A and the lower main body portion 54A are arranged so as to be parallel to each other with the third plate portion 34C interposed therebetween. In the closed state of the packing 50, when a cross section perpendicular to the extension direction of the packing 50 is viewed as shown in FIG. 9, the tip (projection portion 53B) of the upper covering portion 53 and the tip of the lower covering portion 54 are horizontally arranged with the second plate portion 34B interposed therebetween. When the packing 50 is in the closed state (when the built-in stove 1 is installed), the fixing portion 51 is fixed to the protruding portion 34, so that the packing 50 can be prevented from coming off the protruding portion 34.

[0046] 9, the lower protrusion 54B of the upper covering part 53 contacts the upper surface of the first plate part 34A. The inner protrusion 53C of the upper covering part 53 contacts the inner surface of the second plate part 34B (the surface opposite to the protruding side of the third plate part 34C). In this manner, the fixing part 51 is fixed in a state of being in close contact with the protruding part 34.

[0047] 9, by installing the built-in stove 1 on the kitchen counter 100, the extension 52 is sandwiched between the peripheral portion 2B of the top plate 2 and the mounting surface 102A. This allows the packing 50 to seal the gap between the overhang 34 and the mounting surface 102A.

[0048] FIG. 10 shows a cross-sectional structure of the built-in stove 1 at a position different from that shown in FIG. 8 (the position where the claw portion 38 is cut). As shown in FIGS. 3 and 10, the upper end of the housing portion 30 is provided with a claw portion 38 for fixing the housing portion 30 to the top plate 2, and when the top plate 2 is attached to the housing portion 30, the peripheral portion 2B of the top plate 2 is engaged so as to be hooked on the claw portion 38. In this configuration, the packing 50 is disposed below the claw portion 38. However, in the built-in stove 1 of the present disclosure, the extension portion 52 of the packing 50 extends obliquely downward so as to be positioned lower as it moves away from the connecting portion 55, so that a gap is generated between the claw portion 38 and the extension portion 52. Therefore, the peripheral portion 2B of the top plate 2 is less likely to interfere with the packing 50, and the process of hooking the peripheral portion 2B of the top plate 2 to the claw portion 38 is easily performed.

[0049] 4.Examples of effects In the built-in stove 1, in a natural state where the extension portion 52 is not receiving a pressing force from the mounting surface 102A, the packing 50 has an open state (a state more open than the closed state) between the upper covering portion 53 and the lower covering portion 54. Therefore, in the built-in stove 1, the overhanging portion 34 can be easily inserted between the upper covering portion 53 and the lower covering portion 54 during the installation process of installing the packing 50, and the packing 50 can be easily installed to the overhanging portion 34. On the other hand, in a pressing state where the extension portion 52 receives a pressing force from the mounting surface 102A due to the installation of the built-in stove 1 on the mounting base 102A, the upper covering portion 53 and the lower covering portion 54 are in a closed state (a state more closed than the open state), and in this closed state, the overhanging portion 34 is sandwiched between the upper covering portion 53 and the lower covering portion 54. That is, when the built-in stove 1 is placed on the mounting base 102A, the fixing portion 51 acts to be firmly fixed, and this action makes it possible to prevent the packing 50 from coming off the protruding portion 34. Therefore, this built-in stove 1 can achieve both easy installation of the packing 50 and strong fixation of the packing 50.

[0050] In a natural state where the extension portion 52 is not receiving any pressing force from the mounting surface 102A, the extension portion 52 extends so as to be positioned lower as it moves away from the fixed portion 51. When the extension portion 52 is placed in contact with the mounting surface 102A, the built-in stove 1 can increase the pressing force that the extension portion 52 receives from the mounting surface 102A, and can increase the area of ​​contact between the extension portion 52 and the mounting surface 102A. This makes it easier to ensure tight contact between the extension portion 52 and the mounting surface 102A.

[0051] In the built-in stove 1, the upper surface of the packing 50 is provided with a convex portion 50A that is convex upward, and the lower surface of the packing 50 is provided with a curved portion 50B that is curved so as to be recessed upward. At least a part of the convex portion 50A is provided closer to the extension portion 52 than the upper covering portion 53, and at least a part of the curved portion 50B is provided closer to the extension portion 52 than the lower covering portion 54. In this built-in stove 1, when the extension portion 52 is pushed up, the convex portion 50A is less likely to deform, and the upper covering portion 53 is more likely to be displaced downward while the shape around the convex portion 50A is more maintained. Therefore, in this built-in stove 1, when the extension portion 52 is pushed up by the mounting surface 102A during installation, it is easy to prevent the transmission of force from being hindered by bending around the convex portion 50A, and it is easy to use the force that the extension portion 52 receives from the mounting surface 102A to transition to the closed state. Furthermore, since the curved portion 50B, which is curved so as to be concave upward, is provided closer to the extending portion 52 side than the lower covering portion 54, when the extending portion 52 is pushed up, the area near the lower surface tends to smoothly transition to a shape suitable for the mounting surface 102A.

[0052] The packing 50 has a straight portion 59 in which the fixing portion 51 extends linearly along the overhanging portion 34, and in each straight portion 59, in a cross section perpendicular to the direction in which it extends, the maximum value of the width in the vertical direction and the direction perpendicular to the extending direction (the direction in which the straight portion 59 extends at the cross section) at an intermediate portion 55A (a portion located between the upper covering portion 53 and the lower covering portion 54 in the vertical direction) between the connecting portion 55 is larger than the maximum thickness of the upper covering portion 53. In this way, since the width of the intermediate portion 55A in the connecting portion 55 is relatively large, the vicinity of the intermediate portion 55A is less likely to deform when the extending portion 52 receives a pressing force from the mounting surface 102A, and the upward bending of the packing 50 (specifically, the upward bending near the connecting portion 55) is easily suppressed. Therefore, the packing 50 can transmit the pressing force that the extension portion 52 receives from the mounting surface 102A to the fixed portion 51 more easily.

[0053] In the packing 50, the extension portion 52 of each straight portion 59 is tapered toward the extension direction of the extension portion 52 itself in a cross section perpendicular to the extension direction of the straight portion 59 itself. Due to this configuration, the tip side portion of the extension portion 52 is easily deformed by pressure from the mounting surface 102A and is easily changed into a shape that matches the mounting surface 102A. Therefore, in this built-in stove 1, it is easy to ensure adhesion between the extension portion 52 and the mounting surface 102A of the mounting base 102 after installation. On the other hand, the base side portion of the extension portion 52 is difficult to deform when the extension portion 52 is subjected to pressure from the mounting surface 102A. Therefore, in this built-in stove 1, it is easy to prevent the entire extension portion 52 from bending significantly upward, and it is easy to ensure adhesion between the extension portion 52 and the mounting surface 102A.

[0054] In the built-in stove 1 described above, the packing 50 is held on the overhanging portion 34 such that in a natural state, the upper surface portion 54C and the inner end portion 54D of the lower covering portion 54 are in close contact with the overhanging portion 34, while the middle portion 55A of the connecting portion 55 is in close contact with the overhanging portion 34. As a result, the built-in stove 1 makes it possible to easily attach the packing 50 before placing it on the kitchen counter 100, while also preventing the packing 50 from coming off the overhanging portion 34 in a natural state after the packing 50 is attached (before placing it on the kitchen counter 100).

[0055] <Other embodiments> The present invention is not limited to the embodiments described above and in the drawings. For example, the features of the above or later described embodiments can be combined in any combination within a range that does not contradict. Furthermore, any feature of the above or later described embodiments can be omitted unless it is clearly stated as essential. Furthermore, the above described embodiments may be modified as follows.

[0056] In the above embodiment, when the built-in stove 1 is installed on the kitchen counter 100, the extension 52 is sandwiched between the peripheral portion 2B of the top plate 2 and the mounting surface 102A. However, a protrusion or the like that protrudes upward from the upper surface of the extension 52 may be provided, and such a protrusion or the like and the extension 52 may be sandwiched between the peripheral portion 2B of the top plate 2 and the mounting surface 102A.

[0057] In the description of the embodiment above, the convex portion 50A is provided in the region AR1 (region outside the upper covering portion 53) of the upper surface portion 50C of the packing 50, but it may be provided in a region including the upper surface portion of the upper covering portion 53. Similarly, the curved portion 50B is provided in the region AR2 (region outside the lower covering portion 54) of the lower surface portion 50D of the packing 50, but it may be provided in a region including the lower surface portion of the lower covering portion 54.

[0058] In the above embodiment, the convex portion 50A is provided over the entire area AR1 (area outside the upper covering portion 53) of the upper surface portion 50C of the packing 50, but may be provided over only a part of the area AR1. Similarly, the curved portion 50B is provided over the entire area AR2 (area outside the lower covering portion 54) of the lower surface portion 50D of the packing 50, but may be provided over only a part of the area AR2.

[0059] 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 indicated by the claims or within the scope equivalent to the claims. [Explanation of symbols]

[0060] 1. Built-in stove 2. Top plate 2A…Flat area 2B…periphery 5,6…Gas burner 11,12…Trivet 13...Exhaust cover part 13A…Exhaust hole 15…Sensor section 16…Sensor section 17...Grill door 21,22…Ignition switch 23…Grill ignition switch 30…Housing section 30A…Top end 32...Peripheral wall part 32A…Front wall part 32B…Rear wall part 32C…Side wall part 34...Protruding part 34A…1st plate part 34B…Second plate part 34C...Third plate part 38…Claw part 50…Packing 50A…Convex part 50B…Bent section 50C...Top part 50D…Bottom part 51...Fixed part 52...Extending part 53...Upper covering part 53A…Upper body part 53B...Protruding part 53C…Inner convex part 54…Lower covering part 54A…Lower main body part 54B…Lower convex part 54C...Top part 54D…Inner end 55...Connection part 55A…middle part 59...Straight section 100…Kitchen counter (mounting stand) 102A…Placement surface 104…Counter hole (hole) AP…Aperture AR1,AR2…area SP…Space

Claims

1. a housing portion including a peripheral wall portion and a protruding portion formed at an upper end portion of the peripheral wall portion so as to protrude outward in an annular shape, the housing portion being configured with an upper end side being open; a top plate attached in a configuration that covers the protruding portion from above and closes the housing portion; a packing provided along the protruding portion of the housing; having A built-in stove is installed on a mounting table having a mounting surface around a hole, and the protruding portion is supported on the mounting surface and the built-in stove is disposed through the hole, The packing is a fixing portion disposed annularly along the protruding portion and fixed to the protruding portion; an extension portion disposed annularly on the outer side of the fixing portion; Equipped with The fixing portion is an upper covering portion that covers the protruding portion from above; A lower covering portion that covers the protruding portion from below; a connecting portion that connects the upper covering portion and the lower covering portion; Equipped with The packing is When the extension portion is in a natural state where it is not subjected to a pressing force from the placement surface, the upper covering portion and the lower covering portion are in an open state, In a pressing state in which the extension portion receives a pressing force from the placement surface due to the installation of the built-in stove on the placement stand, the space between the upper covering portion and the lower covering portion is closer than in the open state, and the protruding portion is sandwiched between the upper covering portion and the lower covering portion, resulting in a closed state. Built-in stove.

2. The extension portion extends so as to be positioned lower as it moves away from the fixed portion in a natural state where the extension portion is not subjected to a pressing force from the placement surface. A built-in stove as claimed in claim 1.

3. The packing has an upper surface provided with a protruding portion that protrudes upward, The packing has a lower surface provided with a curved portion that is curved so as to be recessed upward, At least a part of the protrusion is provided on the extending portion side relative to the upper covering portion, At least a part of the curved portion is provided on the extending portion side relative to the lower covering portion. A built-in stove according to claim 1 or 2.

4. The packing has a linear portion where the fixing portion extends linearly along the protruding portion, In the linear portion, in a cross section perpendicular to the direction in which the linear portion extends, a maximum value of a width in a vertical direction and a direction perpendicular to the extending direction at an intermediate portion between the upper covering portion and the lower covering portion at the connecting portion is greater than a maximum value of a thickness of the upper covering portion. A built-in stove according to any one of claims 1 to 3.

5. The packing has a linear portion where the fixing portion extends linearly along the protruding portion, In a cross section perpendicular to the direction in which the linear portion extends, the extending portion has a tapered shape in the extending direction. A built-in stove according to any one of claims 1 to 4.

6. The packing is held by the overhanging portion such that, in the natural state, an upper surface portion and an inner end portion of the lower covering portion are in close contact with the overhanging portion, and an intermediate portion between the upper covering portion and the lower covering portion at the connecting portion is in close contact with the overhanging portion. A built-in stove according to any one of claims 1 to 5.

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