Housing and heating regulator

Abstract

The engaging portion (70) of the second part 6 has an engaging claw portion (71) that protrudes outward from the engaging hole (51) and engages with the engaging portion (50) of the first part (4). The engaging portion (50) of the first part 4 has an abutting engaging band portion (53) that extends from the abutting surface (52) at the periphery of the engaging hole (51) along the insertion direction of the engaging portion (70). The abutting engaging band portion (53) has a through groove (55) that extends from the abutting surface (52) along the insertion direction of the engaging portion (70) and penetrates the outer side surface (530) of the abutting engaging band portion (53).

Description

Housing and cooking appliance The present invention relates to a housing and a cooking appliance having the housing. In particular, the present invention relates to a housing configured by connecting a first part and a second part by engaging an engaged part of the first part with an engaging part of the second part. There are known housings for housing substrates such as circuit boards. For example, such a housing sandwiches a substrate between a resin-made first part of one housing half and a resin-made second part of the other housing half and is formed by connecting the first part and the second part. When manufacturing such a housing that connects the first part and the second part, from the viewpoint of the ease of assembly work and maintenance work, a part connection structure is adopted in which an engaging part of a second part that can be elastically deformed and has an engaging claw part is inserted into an engaging hole of the first part and the engaging claw part is latched to the periphery of the engaging hole (for example: FIG. 4 of Japanese Patent Laid-Open Publication No. 2017-211153). However, once the engaging part is small, or the engaging part is deep from the surface of the housing, the engaging claw part cannot be pressed by a human finger. Therefore, a tool such as a screwdriver is required to release the engagement between the engaging part and the engaged part. However, when pressing a small engaging claw part with a tool, the tool slips from the engaging claw part or the tool rotates. Therefore, when releasing the engagement, the tool becomes unstable, and there is a problem that the tool damages the members near the housing. Especially when the operator uses a cross screwdriver, the tip of the cross screwdriver is difficult to engage with the engaging claw part. Therefore, the above problems are likely to occur. The present invention solves the above problems, and an object of the present invention is to improve the workability when releasing the engagement between the engaged part of the first part and the engaging part of the second part. According to the present invention, there is provided a housing formed by connecting a first part and a second part, wherein the first part has an engaged part, the engaged part has an engaging hole, the second part has an engaging part, the engaging part is inserted into the engaging hole, the engaging part has an engaging claw part, when the engaging part is inserted into the engaging hole, the engaging claw part projects outward from the engaging hole and engages with the engaged part, the engaged part has an abutting engagement belt part, the abutting engagement belt part extends along the insertion direction of the engaging part from an abutting surface of the periphery of the engaging hole where the engaging claw part abuts and engages, and the abutting engagement belt part has a through groove part, the through groove part extends along the insertion direction of the engaging part from the abutting surface and penetrates the outer surface of the abutting engagement belt part. According to the present invention, since the tool can be stabilized when releasing the engagement, the workability can be improved. Hereinafter, an embodiment in which the housing of the present invention is applied to an operation display of a gas stove will be described. FIG. 1 is a perspective view of a countertop gas stove 1 assembled on the countertop of a system kitchen. This countertop gas stove 1 includes a gas stove body (not shown in the figure) and a glass top plate 100 covering the upper part of the gas stove body. Although not shown in the figure, the top plate 100 is provided with a burner opening. The main body part of the gas burner 8 is housed in the gas stove body. The burner head 80 of the gas burner 8 protrudes upward from the burner opening of the top plate 100. An operation knob 101 for operating the gas burner 8 is provided on the front side near the upper surface of the top plate 100. Further, a stove rack 81 for placing a cooking container above the burner head 80 is provided around the burner head 80. As shown in FIGS. 1 and 2, a transparent viewing window 110 is formed on the top plate 100. The user can view the display of the seven-segment display panel 90 of the operation display 2 installed on the lower surface of the top plate 100 through the viewing window 110. Although not shown in the figure, an insertion hole through which the knob body of the operation knob 91 of the operation display 2 is inserted from below is provided in the top plate 100 near the viewing window 110. A threaded portion is formed on the upper surface of the operation display 2 at the peripheral edge of the lower end of the operation knob 91. In a state where the knob body is inserted through the insertion hole from below the top plate 100 and the knob body protrudes upward from the upper surface of the top plate 100, a decorative nut is screwed onto the threaded portion from the upper surface side of the top plate 100, whereby the operation display 2 is installed on the lower surface of the top plate 100. In addition, in this specification, one side where the user operates the countertop gas stove 1 is taken as the front side, the depth direction when viewing the countertop gas stove 1 from the front side is taken as the front-rear direction, the width direction is taken as the left-right direction, and the height direction is taken as the up-down direction. The expressions indicating these directions and positions are for the convenience of explanation and do not limit the present invention. In addition, when the top plate 100 is formed of a transparent material such as glass, the viewing window 110 may not be formed. As shown in FIGS. 2 and 3, the operation display 2 has a housing 3 and a circuit board 9 housed in the housing 3. The housing 3 is formed by connecting an upper housing 4 (first part) made of resin and a lower housing 6 (second part) made of resin. The upper housing 4 and the lower housing 6 can be separated up and down. The circuit board 9 includes the knob body of the operation knob 91 protruding upward from the upper housing 4 and the seven-segment display panel 90 exposed from the opening of the upper housing 4. The circuit board 9 is connected to the upper housing 4 by attaching a cross-groove connecting member 93 (for example: cross screw or cross bolt). By operating the operation knob 91, for example, setting a timer, the set time is displayed on the display panel 90. The upper outer shell 4 is formed by a flat box body that opens downward. The upper outer shell 4 has an upper plate 40, a front plate 41, a rear plate 42, a left plate 43, and a right plate 44 in the shape of a rectangular flat plate. The front plate 41, the rear plate 42, the left plate 43, and the right plate 44 extend downward from the peripheral edge of the upper plate 40 respectively. Guide holes 410 are formed at both ends in the left-right direction of the front plate 41 of the upper outer shell 4. A locking piece 610 extending upward from the front wall 61 of the lower outer shell 6 described later is inserted into the guide holes 410. A beam portion 411 is formed on the outer surface of the front plate 41, and the beam portion 411 connects both ends in the left-right direction of the guide holes 410 in a manner that covers the lower half of the guide holes 410. The front end hook portion 611 of the locking piece 610 of the lower outer shell 6 described later is provided on this beam portion 411. In addition, each component in the left and right engaging structures including the left and right guide holes 410 is the same on the left and right except for the formed positions. Therefore, the same component symbols are used for the same components, and the following description will be mainly based on the structure of one side of the engaging structure. As shown in FIGS. 2 to 4, at both ends in the left-right direction of the rear portion of the upper outer shell 4, from near the rear end of the upper plate 40 to the central portion in the up-down direction of the rear plate 42, it is cut in a U shape across the upper plate 40 and the rear plate 42. Furthermore, a front peripheral wall 46, a left peripheral wall 47, and a right peripheral wall 48 extending downward from the upper end of the cut are formed on the lower surface of the upper plate 40 to near the lower end of the rear plate 42. Therefore, recesses 45 and channel-shaped through holes (hereinafter referred to as "engagement holes 51") are continuously formed in the up-down direction at both ends in the left-right direction of the rear portion of the upper outer shell 4. The recess 45 is surrounded by the upper portions of the front peripheral wall 46, the left peripheral wall 47, and the right peripheral wall 48, and is open at the rear and in the up-down direction. The engagement hole 51 is surrounded by the lower portions of the front peripheral wall 46, the left peripheral wall 47, and the right peripheral wall 48 and a part of the lower portion of the rear plate 42, and is open in the up-down direction. The engagement portion 70 of the lower outer shell 6 described later is inserted into this engagement hole 51 from below. Furthermore, the engagement claw portion 71 provided at the upper end of the engagement portion 70 described later abuts against and engages with the upper end surface of the rear plate 42 (hereinafter referred to as "abutment surface 52") that forms the peripheral edge of the upper end opening of the engagement hole 51. Therefore, in this outer shell 3, the lower portions of the front peripheral wall 46, the left peripheral wall 47, and the right peripheral wall 48 and a part of the lower portion of the rear plate 42 (hereinafter referred to as "abutment and engagement belt portion 53") that form a part of the engagement hole 51 constitute the engaged portion 50. A through groove portion 55 is formed in the abutting engagement belt portion 53 that forms a part of the engaging hole 51, and the through groove portion 55 is linearly cut from the central portion in the left-right direction of the abutting surface 52 to a specified position above the lower end of the abutting engagement belt portion 53 (i.e., the lower end of the rear plate 42). The through groove portion 55 penetrates from the outer surface 530 of the abutting engagement belt portion 53 into the engaging hole 51 and forms a slit groove. Therefore, the inside and outside of the engaging hole 51 communicate with each other through the through groove portion 55. The length and width of the through groove portion 55 formed in the abutting engagement belt portion 53 are set to a size such that a part of the tip of a general-purpose cross screwdriver (e.g., PH Tip2 described in ISO-8764-1:2004(E)) can be inserted into the through groove portion 55. For example, the length of the through groove portion 55 is 2 to 3 mm, and the width of the through groove portion 55 is 1.5 to 2.5 mm. As long as the through groove portion 55 that can allow the tip of a general-purpose cross screwdriver to be inserted is formed, the disengagement of the engagement can be performed using the same tool as the tool used to connect the circuit board 9 to the upper housing 4 by the above-described cross groove connecting member 93. Thereby, the circuit board 9 can be disassembled and assembled and the engagement can be released using a single tool. In addition, the width of the through groove portion 55 can also be set such that not a part of the tip of the cross screwdriver but the tip can be inserted into the through groove portion 55. Thereby, the slipping of the tool can be suppressed by the left and right side walls of the through groove portion 55. The lower housing 6 has a flat plate shape. The lower housing 6 has a rectangular lower wall 60, a front wall 61 extending upward from the front edge of the lower wall 60, a rear wall 62 extending upward from the rear edge of the lower wall 60 to a specified position lower than the front wall 61, a left wall 63 extending upward from the left edge of the lower wall 60 to a specified position lower than the front wall 61, and a right wall 64 extending upward from the right edge of the lower wall 60 to a specified position lower than the front wall 61. Furthermore, a stepped portion 65 is formed in a portion more inside than the peripheral edges of the left wall 63, right wall 64, and rear wall 62 on the upper surface side of the lower wall 60 of the lower housing 6, and the stepped portion 65 protrudes upward from the lower wall 60 to the same height position as the upper end of the front wall 61. Therefore, a flange portion extending outward from the lower end peripheral edge of the stepped portion 65 is formed in the lower housing 6. The stepped portion 65 is embedded in the left plate 43, right plate 44, and rear plate 42 of the upper housing 4 when the upper housing 4 and the lower housing 6 are connected. L-shaped locking pieces 610 extending upward (i.e., toward the upper housing 4 side in the engaged state) are respectively formed at both ends in the left-right direction of the front wall 61 of the lower housing 6. A hook portion 611 that bends forward and extends is formed at the upper end portion of the locking piece 610. The locking piece 610 is inserted into the guiding hole 410 formed in the front plate 41 of the upper housing 4 when the upper housing 4 and the lower housing 6 are connected. Furthermore, when the locking piece 610 is inserted into the guiding hole 410, the hook portion 611 engages with the beam portion 411 of the upper housing 4. Both left and right ends of the rear wall 62 of the lower housing 6 are cut forward shallowly. At both left and right ends in the left-right direction of the rear part of the lower wall 60 of the lower housing 6, there are formed engaging portions 70 made of plate-like pieces in an L-shape that extend upward (i.e., toward the upper housing 4 side in the engaged state) from the cut portions and exceed the stepped portion 65. At the upper end portion of the engaging portion 70, there is formed an engaging claw portion 71 that extends by bending backward. When the upper housing 4 and the lower housing 6 are connected, the engaging portion 70 is inserted into the engaging hole 51 of the upper housing 4 described above. The engaging portion 70 that protrudes more forward than the stepped portion 65 has elasticity that can deform back and forth with the upper end of the stepped portion 65 as a fulcrum. The width of the engaging portion 70 is set to be slightly smaller than the width of the engaging hole 51 so that the engaging portion 70 can be inserted into the engaging hole 51. At both left and right ends of the engaging claw portion 71, there are respectively provided an inclined surface 72 that inclines outward in such a way that the thickness becomes thicker from the upper end 77 side (front end side) of the engaging claw portion 71 toward the base end side of the engaging portion 70, a flat surface 73 that extends straight downward from the top of the inclined surface 72 with a uniform thickness, and a standing surface (hereinafter referred to as "engaging surface 74") that extends by bending forward from the lower end of the flat surface 73 (refer to FIG. 6). The inclined surface 72 of the engaging claw portion 71 slides on the inner surface of the rear plate 42 forming the engaging hole 51 and is inserted into the engaging hole 51. Therefore, the engaging portion 70 can be smoothly inserted into the engaging hole 51. When the engaging portion 70 is inserted into the engaging hole 51 to the final position, the engaging claw portion 71 protrudes outward from the upper end opening of the engaging hole 51, and the engaging surface 74 of the engaging claw portion 71 abuts and engages with the abutting surface 52 of the abutting engagement belt portion 53 that constitutes a part of the engaging hole 51. At the center portion in the left-right direction of the engaging claw portion 71, there is formed a concave groove portion 75 that is linearly cut along the up-down direction of the extension of the engaging portion 70. The concave groove portion 75 is formed from the engaging surface 74 to the upper end 77 of the engaging claw portion 71. For example, the length of the concave groove portion 75 is 1.5 to 2 mm, the width of the concave groove portion 75 is 1.5 to 2.5 mm, and the depth of the deepest part of the concave groove portion 75 is 0.5 to 1.5 mm. Furthermore, the width of the concave groove portion 75 is set to be slightly equal to the width of the through groove portion 55 formed in the abutting engagement belt portion 53 of the upper housing 4. When the engaging portion 70 is inserted into the engaging hole 51 and the engaging surface 74 of the engaging claw portion 71 abuts and engages with the abutting surface 52 of the abutting engagement belt portion 53, the concave groove portion 75 of the engaging claw portion 71 and the through groove portion 55 of the abutting engagement belt portion 53 communicate with each other in the up-down direction of the extension of the engaging portion 70. Therefore, in the engaged state, a long communication groove that opens outward in the up-down direction is formed by the through groove portion 55 and the concave groove portion 75. Furthermore, the engaging surface 74 of the engaging claw portion 71 abuts and engages with the abutting surface 52 of the abutting engagement belt portion 53 in such a way that the communication groove intersects perpendicularly with the flat surface 73 of the engaging claw portion 71 (refer to FIG. 5). The bottom surface of the concave groove portion 75 is a flat surface. As shown in FIGS. 5 and 6, the engaging claw portion 71 is formed such that in the engaged state, the engaging surface 74 engages with the abutting surface 52 at a position further forward than the rear end of the abutting surface 52 (i.e., the outer surface 530 of the abutting engagement belt portion 53). Therefore, in the engaged state, the flat surface 73 of the engaging claw portion 71 is located more inward than the outer surface 530 of the abutting engagement belt portion 53. Thus, a gap of a certain size is formed between the flat surface 73 and the outer surface 530 of the abutting engagement belt portion 53. When the upper housing 4 is connected to the lower housing 6, as shown in FIG. 4, the upper housing 4 and the lower housing 6 are arranged such that the lower surface on the opening side of the upper housing 4 faces the upper surface on the side where the engaging portion 70 of the lower housing 6 protrudes. Then, the locking piece 610 protruding upward from the front wall 61 of the lower housing 6 is inserted into the guiding hole 410 of the upper housing 4 so that the hook portion 611 engages with the beam portion 411. Furthermore, the engaging portion 70 protruding upward from the lower wall 60 of the lower housing 6 is inserted into the engaging hole 51 of the upper housing 4. At this time, since the engaging portion 70 is formed of an elastic body that can be elastically deformed in the front-rear direction perpendicular to the insertion direction of the engaging portion 70, the engaging portion 70 is elastically deformed in a manner of bending forward. Furthermore, the engaging claw portion 71 contacts the inner surface of the abutting engagement belt portion 53 and moves upward. Then, as shown in FIGS. 2, 5, and 6, when the engaging claw portion 71 passes through the engaging hole 51 and the engaging claw portion 71 protrudes outward from the engaging hole 51, the engaging claw portion 71 moves backward by the elastic reaction force of the engaging portion 70. In this way, the lower end surface (i.e., the engaging surface 74) of the engaging claw portion 71 abuts against the upper end surface of the abutting engagement belt portion 53 (i.e., the abutting surface 52 at the periphery of the upper end opening of the engaging hole 51), and the engaging portion 70 engages with the engaged portion 50. When separating the upper housing 4 from the lower housing 6, as shown in FIGS. 5 and 6, the front end of the tool is abutted against the engaging portion from the rear side. For example, in the cross-shaped blade of the Phillips screwdriver 10, two blades connected in one direction are inserted into the communication groove formed by the through groove portion 55 and the concave groove portion 75, and the other two blades connected in a direction perpendicular to the one direction abut against the flat surface 73. Then, as long as a part of the front end of the tool is inserted into the communication groove and the engaging claw portion 71 is pressed toward the upper housing 4 side with the tool, the engagement can be released. According to the above embodiments, the abutting engagement belt portion 53 of the engaged portion 50 of the upper housing 4 extends from the abutting surface 52 where the engaging claws 71 of the engaging portion 70 of the lower housing 6 abut and engage along the insertion direction of the engaging portion 70 toward the lower housing 6 side. In addition, the abutting engagement belt portion 53 has a through groove portion 55 penetrating the outer surface 530 of the abutting engagement belt portion 53. Therefore, it is possible to easily insert a tool from the outside of the housing 3 into the through groove portion 55. Furthermore, since the through groove portion 55 extends from the abutting surface 52 where the engaging claws 71 abut and engage, the tip of the tool easily abuts against the engaging claws 71. In addition, since the tip of the tool is inserted into the through groove portion 55, the sliding and rotation of the tool are suppressed. Thereby, the tool can be stabilized when the engagement is released. Therefore, workability can be improved. Furthermore, in a state where the housing 3 is mounted on the glass top plate 100, damage to the top plate 100 can be prevented and the engagement can be smoothly released. Therefore, a cooking heater with excellent workability can be provided. Furthermore, according to the above embodiments, in the engaged state of the engaging portion 70 and the engaged portion 50, the through groove portion 55 and the concave groove portion 75 communicate with each other in the insertion direction of the engaging portion 70 to form a communication groove. Therefore, it is possible to easily insert the tip of the tool from the outside of the housing 3 into the communication groove. Furthermore, by the communication groove, the tip of the tool more easily abuts against the engaging claws 71. Therefore, the sliding and rotation of the tool are further suppressed. In addition, when releasing the engagement, not only a flat screwdriver but also a general-purpose cross screwdriver can be used, and a part of the blade of the cross screwdriver can be inserted into the communication groove to push the engaging claws 71 in the direction of releasing the engagement. Thereby, workability can be further improved. Alternatively, instead of forming the through groove portion 55 in the abutting engagement belt portion 53 of the engaged portion 50, a concave groove portion 75 may be formed only between the engaging surface 74 of the engaging claws 71 and the upper end 77 of the engaging claws 71. By using such an engaging portion 70, it is possible to easily insert the tip of the tool from the outside of the housing 3 into the concave groove portion 75. Furthermore, according to the above embodiments, since the flat surface 73 of the engaging claws 71 can be pushed by the tip of the tool, the sliding and rotation of the tool can be further suppressed. In particular, according to the above embodiments, the flat surface 73 is adjacent to the concave groove portion 75, and in the engaged state, the communication groove formed by the through groove portion 55 and the concave groove portion 75 perpendicularly intersects the flat surface 73 of the engaging claws 71. Therefore, when two blades connected in one direction in the cross blade of the cross screwdriver are inserted into the communication groove, the two blades connected in the direction perpendicular to the one direction abut against the flat surface 73. Thereby, the sliding and rotation of the tool can be further suppressed. Furthermore, a gap of a certain size in the insertion direction of the tool is formed between the flat surface 73 of the engaging claws 71 and the outer surface 530 of the abutting engagement belt portion 53. Therefore, the abutting surface 52 functions as a pedestal portion for supporting the tool. Thereby, the tool can be further stabilized and workability can be further improved. Furthermore, according to the above-described embodiments, when releasing the engagement, the same tool as the one used for disassembling and assembling the parts to be stored can be used. Therefore, there is no need to replace the tool, and the workability can be further improved. In addition, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims. For example, the following modified examples and combinations thereof are included in the present invention. In FIGS. 7 and 8, the same components as those of the above-described housing 3 are given similar reference numerals. As shown in FIG. 7, the through groove portion 55a of the abutting engagement belt portion 53a of the engaged portion 50a may also be formed so as to penetrate the entire abutting engagement belt portion 53a along the insertion direction of the above-described engaging portion 70. By forming such a through groove portion 55a, it is possible to easily insert the tool from the outside of the housing 3 into the through groove portion 55a. Furthermore, as shown in FIG. 8, the concave groove portion 75a of the engaging claw portion 71a may extend from the engaging surface 74a to a designated position closer to the front than the upper end 77a of the engaging claw portion 71a, and a standing wall portion 78 extending in the thickness direction of the engaging claw portion 71a may be formed between the upper end 77a of the engaging claw portion 71a and the front end 750 of the concave groove portion 75a. By forming such an engaging claw portion 71a, when the front end of the tool is inserted into the concave groove portion 75a, it is difficult for the tool to脱离 from the concave groove portion 75a due to the standing wall portion 78. Thereby, it is possible to further suppress the slipping and rotation of the tool when releasing the engagement. In addition, an inclined surface similar to the inclined surface 72 may be provided on the upper end 77a side of the standing wall portion 78 to facilitate the insertion of the engaging portion 70a into the engaged portion 50. Furthermore, although not shown in the figure, the concave groove portion 75 of the engaging claw portion 71 may also be formed such that the depth becomes deeper from the front end of the concave groove portion 75 toward the engaging surface 74. By forming such a concave groove portion 75, when a rod-shaped tool having a triangular pointed front end is inserted into the concave groove portion 75, the front end of the tool is embedded in the bottom surface of the concave groove portion 75, making it difficult for the tool to slide within the concave groove portion 75. Thereby, it is possible to further suppress the slipping and rotation of the tool when releasing the engagement. Furthermore, when the housing 3 and the members around the housing 3 are connected to each other by an attaching cross groove connecting member, the widths of the through groove portion 55 and the concave groove portion 75 may each be equal to or greater than the width of the wing of the cross groove of the attaching cross groove connecting member. Furthermore, as long as the engaging portion 70 can be elastically deformed, the lower housing 6 may also be made of other materials (e.g., rubber or metal, etc.). Furthermore, as long as the tool can be inserted into the concave groove portion 75, the concave groove portion 75 may be formed in any shape (e.g., circular shape or cross shape, etc.). Furthermore, a part of the concave groove portion 75 may also penetrate the engaging portion 70 in the thickness direction. Furthermore, the housing 3 may also store parts other than the substrate. Furthermore, the housing 3 can be applied not only to the countertop gas stove 1 but also to other heating cookers (e.g., built-in gas stove or oven). The present invention has been described in detail above, and the summary of the present invention is as follows. According to a first aspect of the present technology, a housing is provided, which is formed by connecting a first part and a second part. Among them, the first part has a part to be engaged, the part to be engaged has an engagement hole, the second part has an engaging part, the engaging part is inserted into the engagement hole, the engaging part has an engaging claw part, when the engaging part is inserted into the engagement hole, the engaging claw part protrudes outward from the engagement hole and engages with the part to be engaged, the part to be engaged has an abutting engagement belt part, the abutting engagement belt part extends along the insertion direction of the engaging part from the abutting surface of the periphery of the engagement hole where the engaging claw part abuts and engages, the abutting engagement belt part has a through groove part, the through groove part extends along the insertion direction of the engaging part from the abutting surface and penetrates the outer surface of the abutting engagement belt part. According to the above first aspect, the abutting engagement belt part of the part to be engaged extends along the insertion direction of the engaging part from the abutting surface where the engaging claw part abuts and engages. Further, the abutting engagement belt part has a through groove part penetrating the outer surface. Therefore, it is possible to easily insert a tool from the outside of the housing into the through groove part. Moreover, since the through groove part extends from the abutting surface where the engaging claw part abuts and engages, the tip of the tool easily abuts against the engaging claw part. Further, since the tip of the tool is inserted into the through groove part, the slipping and rotation of the tool are suppressed. Thereby, since the tool can be stabilized when the engagement is released, the workability can be improved. According to a second aspect of the present technology, in the above first aspect, the engaging claw part has a concave groove part, the concave groove part extends from the engaging surface of the engaging claw part to the front end of the engaging claw part, the engaging surface abuts and engages with the abutting surface, the through groove part of the abutting engagement belt part and the concave groove part of the engaging claw part are formed to communicate with each other in the insertion direction of the engaging part when the engaging surface of the engaging claw part abuts and engages with the abutting surface of the abutting engagement belt part. According to the above second aspect, in the engaged state of the engaging part and the part to be engaged, the through groove part and the concave groove part communicate with each other in the insertion direction of the engaging part to form a communication groove. Therefore, it is possible to easily insert the tip of the tool from the outside of the housing into the communication groove. Moreover, by means of the communication groove, the tip of the tool more easily abuts against the engaging claw part. Therefore, the slipping and rotation of the tool are further suppressed. Further, when the engagement is released, a part of the blade of a general-purpose cross screwdriver as a connecting tool can be inserted into the communication groove to push the engaging claw part in the engagement release direction. Thereby, the workability can be further improved. According to a third aspect of the present technology, in the above first aspect or second aspect, the engaging claw part has a flat surface, the flat surface has a uniform thickness and extends from the engaging surface of the engaging claw part to the front end of the engaging claw part. According to the above third aspect, the flat surface of the engaging claw part can be pushed by the tip of the tool. Thereby, the slipping and rotation of the tool can be further suppressed when the engagement is released. According to a fourth aspect of the present technology, in the above-described third aspect, the flat surface is formed so as to perpendicularly intersect the through groove portion of the abutment engagement belt portion and the concave groove portion of the engagement claw portion when the engagement surface of the engagement claw portion abuts and engages with the abutment surface of the abutment engagement belt portion. According to the above-described fourth aspect, a general-purpose cross screwdriver can be used to easily release the engagement. Thereby, the workability can be further improved. According to a fifth aspect of the present technology, in the housing described in any one of the above-described second to fourth aspects, the concave groove portion extends from the engagement surface to a specified position further forward than the front end of the engagement claw portion, and the engagement claw portion has a standing wall portion between the front end of the engagement claw portion and the front end of the concave groove portion. According to the above-described fifth aspect, when the front end of the tool is inserted into the concave groove portion, it is difficult for the tool to脱离 from the concave groove portion due to the standing wall portion. Thereby, slippage and rotation of the tool can be further suppressed when releasing the engagement. According to a sixth aspect of the present technology, in the housing described in any one of the above-described second to fifth aspects, a housed part is housed between the first part and the second part, and the housing, the housed part, and the peripheral members around the housing are interconnected by an attachment cross groove connecting member, and the width of the through groove portion or the width of the concave groove portion is equal to or greater than the width of the wings of the cross groove of the attachment cross groove connecting member. According to the above-described sixth aspect, when releasing the engagement, the same tool as the tool used for disassembling and assembling the attachment cross groove connecting member can be used. Thereby, it is not necessary to replace the tool, and the workability can be further improved. According to a seventh aspect of the present technology, in the housing described in any one of the above-described first to sixth aspects, a glass plate is installed on at least one of the first part and the second part. According to the above-described seventh aspect, damage to the glass plate installed on the first part or the second part can be prevented when releasing the engagement. According to an eighth aspect of the present technology, a heating cooker is provided, which has a housing described in any one of the above-described first to seventh aspects. According to the above-described eighth aspect, a heating cooker with excellent workability can be provided. [Industrial Applicability] According to the present invention, a housing with excellent workability when releasing the engagement can be provided. 1: Tabletop gas stove 2: Operation display 3: Housing 4: Upper housing 6: Lower housing 8: Gas burner 9: Circuit board 10: Phillips screwdriver 40: Upper plate 41: Front plate 42: Rear plate 43: Left plate 44: Right plate 45: Recess 46: Front peripheral wall 47: Left peripheral wall 48: Right peripheral wall 50: Engaged part 50a: Engaged part 51: Engagement hole 52: Contact surface 53: Contact engagement belt part 53a: Contact engagement belt part 55: Through groove part 55a: Through groove part 60: Lower wall 61: Front wall 62: Rear wall 63: Left wall 64: Right wall 65: Step part 70: Engagement part 70a: Engagement part 71: Engagement claw part 71a: Engagement claw part 72: Inclined surface 73: Flat surface 74: Engagement surface 74a: Engagement surface 75: Concave groove part 75a: Concave groove part 77: Upper end 77a: Upper end 78: Standing wall part 80: Burner head 81: Burner grate 90: Display panel 91: Operation knob 93: Connecting member with Phillips groove 100: Top plate 101: Operation knob 110: Transparent window 410: Guide hole 411: Beam part 530: Outer surface 610: Locking piece 611: Hook part 750: Front end FIG. 1 is a perspective schematic view of a cooking appliance using a housing according to an embodiment of the present invention. FIG. 2 is a perspective schematic view of key parts of a cooking appliance using a housing according to an embodiment of the present invention. FIG. 3 is an exploded perspective schematic view of a housing according to an embodiment of the present invention. FIG. 4 is an exploded perspective schematic view of key parts of a housing according to an embodiment of the present invention. FIG. 5 is a perspective schematic view of key parts of a housing according to an embodiment of the present invention. FIG. 6 is a cross-sectional schematic view of key parts of a housing according to an embodiment of the present invention. FIG. 7 is a perspective schematic view of key parts of another example of an upper housing according to an embodiment of the present invention. FIG. 8 is a perspective schematic view of key parts of another example of a lower housing according to an embodiment of the present invention. 4: Upper housing 6: Lower housing 10: Phillips screwdriver 45: Recess 51: Engagement hole 50: Engaged part 52: Contact surface 53: Contact engagement belt part 55: Through groove part 70: Engagement part 71: Engagement claw part 72: Inclined surface 73: Flat surface 75: Concave groove part 77: Upper end 530: Outer surface

Claims

1. A housing, comprising a first part and a second part connected together, wherein, The first part has a locking portion with a locking hole. The second part has a locking portion that is inserted into the locking hole. The locking portion has a locking claw portion. When the locking portion is inserted into the locking hole, the locking claw portion protrudes outward from the locking hole and locks into the locking portion. The locking portion has an abutting locking band portion. The abutting locking band portion extends from the abutting surface of the locking hole where the locking claw portion abuts and locks into the locking portion along the insertion direction of the locking portion. The abutting locking band portion has a through groove portion. The through groove portion extends from the abutting surface where the locking claw portion abuts and locks into the locking hole when the locking portion is inserted into the locking hole along the insertion direction of the locking portion and penetrates the outer surface of the abutting locking band portion. The width of the through groove portion is smaller than the width of the locking surface of the locking claw portion abutting and locking into the abutting surface.

2. The housing as claimed in claim 1, wherein the engaging claw portion has a groove portion extending from the engaging surface of the engaging claw portion to the front end of the engaging claw portion, and the through groove portion of the abutting engaging band portion and the groove portion of the engaging claw portion are formed to communicate with each other in the insertion direction of the engaging portion when the engaging surface of the engaging claw portion abuts against and engages with the abutting surface of the abutting engaging band portion.

3. The housing as claimed in claim 2, wherein the engaging claw portion has a flat surface having a uniform thickness and extending from the engaging surface of the engaging claw portion to the front end of the engaging claw portion.

4. The housing as claimed in claim 3, wherein the flat surface is formed such that it intersects perpendicularly with the through groove of the abutting band and the recess of the locking claw when the locking surface of the locking claw abuts and engages with the abutting surface of the abutting locking band.

5. The housing as described in any one of claims 2 to 4, wherein the groove extends from the engaging surface to a predetermined position further forward of the front end of the engaging claw, and the engaging claw has an erected wall portion between the front end of the engaging claw and the front end of the groove.

6. The housing as described in any one of claims 2 to 4, wherein a housed part is housed between the first part and the second part, the housing and the housed part and the peripheral members of the housing are connected to each other by a cross-groove connecting member, wherein the width of the through groove or the width of the recess is greater than the width of the wing of the cross groove of the cross-groove connecting member.

7. The housing as described in any one of claims 1 to 4, wherein at least one of the first part and the second part is fitted with a glass plate.

8. A heating regulator having a housing as described in any one of claims 1 to 4.

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