JP2015031468A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a configuration which has less load in terms of component management as the number of components accompanying assembly of a protective cap can easily be suppressed, and in which appearance of an upper surface of the protective cap hardly be impaired.SOLUTION: On an upper surface part 22 of a burner cap body 20, a plurality of projections 24 engaged with a protective cap 60 are provided respectively, and at the protective cap 60, a plurality of parts 64 to be engaged which are engaged with each of the projections 24 are provided respectively. At these parts 64 to be engaged, insertion parts 68a, 68b, 68c are formed respectively which are inserted into recess parts 25a, 25b, 25c of each of the projections by relative movement with respect to the projections 24, and on one side in a circumferential direction of the insertion parts 68a, 68b, 68c, first regulation parts 69a, 69b, 69c are formed, and on the other side in the circumferential direction, second regulation parts 66a, 66b, 66c are formed. Then, the second regulation parts 66a, 66b, 66c are made to be a falling-off prevention posture by plastic deformation processing.

Description

  The present invention relates to a heating cooker.

  A burner used for a gas stove has a configuration including a burner cap in which a protective cap is fixed on a burner cap body. In this type of burner cap, for example, a configuration is adopted in which the burner cap body and the protection cap are fixed by a scissors or the like while the protection cap is supported by a plurality of protrusions protruding from the upper surface portion of the burner cap body.

JP 2012-83036 A

  When the burner cap body is covered with a protective cap and these are fixed with scissors or screws, the scissors or screws are hit from the upper surface side of the protective cap. However, in such a configuration, since wrinkles and screws are exposed on the upper surface side of the protective cap, the wrinkles and screws easily damage the aesthetic appearance of the upper surface of the protective cap. In particular, in the configuration in which the scissors and screws are driven from the upper surface side of the protective cap, there is a problem that the tool easily comes into contact with the upper surface during assembly work, and the protective cap upper surface is likely to be scratched or soiled. There is also a problem that the unevenness of the jars and screws tends to cause clogging of dust and broth, making it difficult to perform the cleaning operation.

  On the other hand, as a technique related to this problem, a technique such as Patent Document 1 is provided. In the technique of this Patent Document 1, a plurality of protrusions 11 are formed on the upper surface side of the burner cap 3, and a holding groove 14 for holding the wire spring 13 is formed on these protrusions 11. A plurality of latching claws 20 are formed on the side. The protective cap 4 is pressed in a state where the wire spring 13 is held in an annular shape by the plurality of protrusions 11 formed on the upper surface side of the burner cap 3, so that each latching claw 20 is latched to the wire spring 13. The protective cap 4 is assembled to the burner cap 3.

  However, in the technique of Patent Document 1, a dedicated component (wire spring) for connecting the burner cap 3 and the protective cap 4 must be prepared and managed, which increases the number of components and increases the component management. Will increase the burden. In this technique, when the protective cap 4 is assembled to the burner cap 3 holding the wire spring 13, the protective cap 4 must be pressed with a certain amount of force from the upper surface side in order to elastically deform the wire spring 13. For this reason, a tool or the like must be brought into strong contact with the upper surface of the protective cap 4 during pressing work during assembly, and dirt or scratches are likely to occur during contact.

  The present invention has been made to solve the above-described problems, and in a cooking device provided with a burner cap in which a protective cap is fixed on the burner cap body, the number of parts associated with the assembly of the protective cap is suppressed. Another object of the present invention is to provide a structure that is easy and has a small burden in terms of component management, and that the aesthetic appearance of the upper surface of the protective cap is not easily impaired.

The present invention is a heating cooker having a burner cap comprising an annular burner cap body and a protective cap fixed on the burner cap body,
In the burner cap main body, on the upper surface portion side facing the protective cap, protrusions that engage with the protective cap are provided at a plurality of positions in the circumferential direction of the burner cap main body,
The protective cap includes a cover member that covers the burner cap main body, and a plurality of engaged portions that engage with the plurality of protruding portions are provided on opposite sides of the cover member facing the burner cap main body, respectively. And
The protrusion has a recess formed on the outer peripheral side of the burner cap body or on the center side of the burner cap body,
Each of the engaged parts is formed with an insertion part to be inserted into the plurality of concave parts by relative movement with respect to the protrusion part, and each of the insertion parts is provided on one side in the circumferential direction of the insertion part. Are formed in each of the insertion portions on the other circumferential side of each of the insertion portions. Each of the second restricting portions for restricting the escape to one side in the circumferential direction is formed,
The second restricting portion has a retaining posture by plastic deformation after each of the insertion portions is inserted into the recess.

  According to the first aspect of the present invention, a plurality of protrusions formed on the burner cap body and a plurality of engaged portions formed on the protective cap are engaged to form a second part of the engaged portion. Since it is a structure that can be fixed using plastic deformation of the restricting portion, it is possible to suppress the generation of dedicated assembly parts, and it is possible to reduce the number of parts and the burden of parts management.

In the invention of claim 2, when each extending piece (second restricting portion) is deformed into the retaining posture, it may be performed by a relatively simple process of bending them to the center side of the burner cap body. It is easy to reduce the work load, and it is difficult for troubles in work to occur.
In particular, even if a very strong force is not applied from the upper surface side of the protective cap, a stable connection state in which the insertion portion is difficult to be pulled out to one side in the circumferential direction by bending using the gap between the cover member and the burner cap body. be able to. Therefore, it is not necessary to give a strong impact to the upper surface portion of the protective cap or press the upper surface portion with a very strong force during fixing, and the upper surface portion of the protective cap is hardly damaged.
Furthermore, since the extension piece is bent toward the center, the extension piece is pushed linearly toward the center from the gap near the extension piece (the gap between the cover member and the burner cap body). If it comes out, it can be easily set in a retaining posture. Therefore, even within the gap, it becomes easier to process from a closer position.

FIG. 1 is a perspective view illustrating a heating cooker according to the first embodiment of the present invention. FIG. 2 is a perspective view illustrating a burner cap used in the cooking device of FIG. 3A is a plan view of the burner cap of FIG. 2, and FIG. 3B is an AA sectional view showing a section of the burner cap of FIG. 3A cut at the AA position. is there. 4A is a left side view of the burner cap of FIG. 2, and FIG. 4B is a front view of the burner cap. FIG. 5A is a plan view of a protective cap used in the burner cap of FIG. 2, and FIG. 5B is a perspective view of the protective cap as viewed obliquely from above. 6A is a bottom view of a protective cap used in the burner cap of FIG. 2, and FIG. 6B is a perspective view of the protective cap as viewed obliquely from below. FIG. 7A is a perspective view of a burner cap body used in the burner cap of FIG. 2 as viewed obliquely from above, and FIG. 7B is a plan view of the burner cap body. FIG. 8 (A) is an explanatory view showing a state before assembling the protective cap to the burner cap body in relation to the manufacturing process of the burner cap of FIG. 2, and FIG. 8 (B) is a state before assembling to the burner cap body. It is the perspective view which looked at only the protective cap from diagonally downward. FIG. 9A is an explanatory view showing a state in which the protective cap is moved relative to the burner cap body from the state of FIG. 8A, with respect to the manufacturing process of the burner cap of FIG. These are explanatory drawings which show the state which performed the plastic deformation process which bends each 2nd control part from the state of FIG. 9 (A).

[First embodiment]
Hereinafter, a first embodiment embodying the present invention will be described with reference to the drawings.
(Overall configuration of cooking device)
First, the overall configuration of the heating cooker 1 will be outlined with reference to FIG.
The heating cooker 1 shown in FIG. 1 is configured as a stove that can heat cooking utensils such as cooking pots. In the heating cooker 1, for example, three circular openings 3 a are provided on a top plate 3 (top plate) constituting the upper surface of the heating cooker main body 2, and at the center position in the openings 3 a, A burner cap 10 that constitutes the head of each gas burner 5 is arranged. On the top 3, metal virtues 7 are provided so as to surround each burner cap 10.

  The gas burner 5 is provided with a gas mixture chamber (not shown) that is connected to a throat portion for sucking fuel gas and primary air and mixes the fuel gas and primary air. A burner body 5a communicates with the gas mixture chamber. It is connected. A burner cap 10 is placed on each burner body 5a. The burner cap 10 includes a burner cap main body 20 having a large number of flame holes 41 (see also FIG. 2) formed on the outer periphery, and an ignition electrode 8 and flame detection are provided in the vicinity of any one of the flame holes 41. And a thermocouple (not shown). In FIG. 2 and the like, only some of the flame holes 41 are illustrated, but a large number of flame holes 41 are formed over the entire circumferential direction of the burner cap body 20. Further, a temperature sensor 9 is arranged so as to penetrate the center of the burner body 5a and the burner cap 10. The temperature sensor 9 functions to contact the bottom of a cooking utensil (such as a cooking pan) placed on the virtues 7 and detect the temperature of the bottom of the cooking utensil.

  In the cooking device 1 configured as described above, the operation units 6 corresponding to the respective gas burners 5 are provided on the front side of the cooking device body 2. When any one of the operation sections 6 is operated, fuel gas is supplied to the burner body 5a corresponding to the operation section together with the primary air through an air-fuel mixture chamber (not shown) to become an air-fuel mixture. The gas flows out from a number of flame holes 41 of the burner cap 10 placed on the main body 5a. Then, a controller (not shown) provided inside the heating cooker body 2 sparks the electrode 8 corresponding to the burner cap 10 to ignite the air-fuel mixture, and generates a flame around the burner cap 10. Thereby, the bottom part of the cooking utensil placed on the five virtues 7 around the burner cap 10 can be heated, and cooking by heating becomes possible.

(Detailed configuration of burner cap)
Next, the detailed configuration of the burner cap 10 will be described.
As shown in FIGS. 2 to 4, the burner cap 10 includes an annular burner cap body 20 and a protective cap 60 fixed on the burner cap body, and these are assembled to each other to form an annular shape as a whole. It is configured. The protective cap 60 disposed on the upper side is configured as a substantially circular annular plate as shown in FIGS. 5 and 6, and the burner cap body 20 disposed on the lower side is an annular plate portion on the upper surface side. It has a substantially cylindrical structure in which a cylindrical portion 20b protrudes downward from 20a. Hereinafter, specific configurations of the burner cap body 20 and the protective cap 60 will be described in detail.

First, the configuration of the burner cap 10 will be described in detail.
The burner cap body 20 shown in FIGS. 2 to 4 is made of, for example, a metal material such as aluminum die casting, and is located below the protective cap 60 and has a function of supporting the lower surface portion of the protective cap 60. As shown in FIG. 2, the burner cap body 20 includes an annular plate portion 20a configured in an annular and plate shape, and a cylindrical shape configured in a cylindrical shape downward from the lower surface portion of the annular plate portion 20a. The part 20b protrudes. And the through-hole 20c extended up and down is formed in the center part of the protective cap 60, and gas can pass to an up-down direction so that the inside of the through-hole 20c may be passed.

  As shown in FIG. 2, FIG. 3 (B), and FIG. 7 (A), in the burner cap body 20, a large number of the above-mentioned flame holes 41 are formed in the lower surface portion of the annular plate portion 20a over the entire circumferential direction. ing. In addition, a protrusion 43 is formed on the lower surface portion of the annular plate portion 20a so as to protrude downward from the vicinity of the outer edge portion of the annular plate portion 20a. In this configuration, the burner cap body 20 is placed on the burner body 5a while the projection 43 is inserted into a not-shown notch portion formed on the burner body 5a, so that the burner cap body 20 is placed on the burner body 5a. The flame hole 41 is formed while being positioned at. In addition, the annular plate portion 20a has a circular shape in plan view with a large part of the outer peripheral edge, and a part of the outer peripheral edge extends outward from an outer edge portion that is circular when viewed in plan. An extending portion 45 is formed. The extending portion 45 (convex portion) is a portion facing the electrode 8 shown in FIG.

  As shown in FIG. 7, in the annular plate portion 20 a of the burner cap main body 20, the protective cap is provided at a plurality of positions in the circumferential direction of the burner cap main body 20 on the upper surface portion side (upper surface portion 22 side) facing the protective cap 60. A plurality of projecting portions 24 that engage with 60 are provided. The plurality of protrusions 24 are configured as a first protrusion 24a, a second protrusion 24b, and a third protrusion 24c. The first protrusion 24a, the second protrusion 24b, Each of the three projecting portions 24c projects in an axial shape upward from the upper surface portion 22 of the annular plate portion 20a. In the example of FIG. 7, the through holes 20c are arranged in the circumferential direction centering on the central axis G (specifically, the central axis of the cylindrical surface constituting the inner surface of the cylindrical portion 20b). More specifically, the first projecting portion 24a and the second projecting portion are positioned so as to be located on a circle C having a predetermined radius centered on the central axis G when viewed in plan as shown in FIG. 7B. 24, third protrusions 24 are arranged at predetermined intervals in the direction of the circle C (circumferential direction).

  Further, as shown in FIG. 7, the annular plate portion 20a has a flat surface portion 22a configured as a flat surface whose upper surface is annular (for example, a horizontal surface in a direction orthogonal to the central axis G), in the vicinity of the outer periphery of the annular plate portion 20a Are arranged in an annular shape along the outer periphery. Further, a tapered (mortar-shaped) portion 22b that is located at a lower position as the outer surface approaches the central axis G is disposed annularly on the center side of the flat surface portion 22a. The first projecting portion 24a, the second projecting portion 24b, and the third projecting portion 24c each project from a position straddling the flat surface portion 22a and the tapered portion 22b.

  The first protrusion 24a, the second protrusion 24b, and the third protrusion 24c are on the outer peripheral side of the burner cap body 20 (on the outer peripheral part 20d side forming the outer peripheral edge of the burner cap main body 20, More specifically, recesses 25a, 25b, and 25c are formed on the outer peripheral edge side of the annular plate portion 20a. These recesses 25a, 25b, and 25c are all configured as grooves in the circumferential direction (circumferential direction centered on the central axis G), and any protrusion 24 is provided with a recess closer to the center than the recess. There are no areas configured.

  As shown in FIG. 7, for example, the concave portion 25 a is located at the middle in the vertical direction of the first protrusion 24 a (the position between the upper and lower ends in the vertical direction) from the radially outer side centered on the central axis G. It has a configuration that is recessed. And the space in the recessed part 25a continues from the circumferential direction one end part of the 1st protrusion part 24a along the said circumferential direction centering on the central axis G to the circumferential direction other end part. Therefore, if the member has a thickness smaller than the width (vertical width) of the recess 25a, the first projecting portion 24a passes between one end in the circumferential direction and the other end in the circumferential direction through the recess 25a. It is possible to relatively move in the circumferential direction. Similarly, the recess 25b is configured to be recessed inward from the radially outer side centered on the central axis G at the intermediate position in the vertical direction of the second protrusion 24b (position between the upper end and the lower end in the vertical direction). ing. And the space in the recessed part 25b continues from the circumferential direction one end part of the 2nd protrusion part 24b along the said circumferential direction centering on the central axis G to the circumferential direction other end part. Therefore, if it is a member having a thickness smaller than the width (vertical width) of the recess 25b, it passes through the recess 25b between one circumferential end and the other circumferential end of the second protrusion 24b. It is possible to relatively move in the circumferential direction. Further, the recess 25c is configured to be recessed inward from the radially outer side centering on the central axis G at the intermediate position in the vertical direction of the third protrusion 24c (position between the upper and lower ends in the vertical direction). Yes. And the space in the recessed part 25c continues from the circumferential direction one end part of the 3rd protrusion part 24c along the said circumferential direction centering on the central axis G to the circumferential direction other end part. Accordingly, if the member has a thickness smaller than the width (vertical width) of the concave portion 25c, it passes through the concave portion 25c between the circumferential one end and the other circumferential end of the third projecting portion 24c. It is possible to relatively move in the circumferential direction.

  Next, the protective cap 60 will be described. FIG. 6 shows only the configuration of the back side of the protective cap 60 in the burner cap 10. As shown in FIGS. 5 and 6, the protective cap 60 includes a cover member 62 that covers the burner cap body 20, and the cover member 62 has a cover surface 62 facing the burner cap body 20 on the opposite surface side (back surface side). A plurality of engaged portions 64 that engage with the plurality of protrusions 24 are provided, respectively. And while this protective cap 60 is mounted on the above-mentioned burner cap main body 20, several to-be-engaged parts 64 engage with each protrusion part 24 of the burner cap main body 20, Therefore It is supposed to be fixed.

  The cover member 62 shown in FIG. 5 and FIG. 6 is configured as an annular plate configured in an annular and plate shape. In the cover member 62, most of the outer peripheral portion 62c has a substantially circular outer shape when seen in a plan view as shown in FIG. And the extension part 62b is formed so that the external shape may extend outside from the part comprised by substantially circular shape. The extension part 62b faces the extension part 45 of the protective cap 60 when the protective cap 60 is assembled to the burner cap body 20 as shown in FIGS. It is the part to cover. The extension part 62b is wider than the extension part 45 and longer than the extension part 45 so as to cover the entire extension part 45 at a position above the electrode 8 (FIG. 1). It is formed with a length.

  Further, as shown in FIGS. 5 and 6, a through hole 62 a having a diameter substantially the same as the inner peripheral surface of the cylindrical portion 20 b described above is formed at the center of the cover member 62. It is formed in a configuration that penetrates in the direction. As shown in FIGS. 2 and 3B, the through hole 62a is arranged in communication with the through hole 20c such that the internal space continues above the internal space of the through hole 20c.

  The cover member 62 shown in FIGS. 5 and 6 is made of, for example, a metal material. As shown in FIG. 5, the upper surface portion has a smooth and glossy structure in which other members do not protrude. In this configuration, the upper surface portion of the cover member 62 functions as the upper surface portion 60 a of the protective cap 60 and is exposed to the outside of the heating cooker 1. Further, as shown in FIG. 6, most of the lower surface of the cover member 62 (the opposed surface on the side facing the burner cap body 20) is configured as the lower surface of the protective cap 60. A plurality of engaged portions 64 are formed on the facing surface side of the cover member 62 (that is, the lower surface portion 60c side of the protective cap 60).

  The plurality of engaged portions 64 are formed by processing, for example, a plate-like metal material. In the example shown in FIG. 6 and the like, the plate-like metal materials (metal plate materials) constituting the plurality of engaged portions 64 are used. 63) is joined to the lower surface of the cover member 62 by a known metal joining method such as welding. In this configuration, “the portion of the lower surface portion of the cover member 62 that is not covered with the metal plate material 63” and “the portion of the metal plate material 63 on the side opposite to the joining side with the cover member 62” are protective caps. 60 constitutes a lower surface portion 60b.

  Each engaged portion 64 includes a first engaged portion 64a, a second engaged portion 64b, and a third engaged portion 64c. Part "," first restriction part "," second restriction part ". Specifically, the plurality of engaged portions 64a, 64b, and 64c have a plurality of engagement portions 64a, 64b, and 64c that move relative to the plurality of protruding portions 24a, 24b, and 24c. It has insertion parts 68a, 68b, 68c inserted into the recesses 25a, 25b, 25c, respectively. And on the one circumferential direction side of each insertion part 68a, 68b, 68c, it is the 1st which controls that each insertion part 68a, 68b, 68c slips out from the recessed part 25a, 25b, 25c to the circumferential direction other side. Restricting portions 69a, 69b, and 69c are formed, respectively. Further, on the other circumferential side of each of the insertion parts 68a, 68b, 68c, a second part for restricting the insertion parts 68a, 68b, 68c from coming out from the recesses 25a, 25b, 25c to the one side in the circumferential direction is provided. Restricting portions 66a, 66b, and 66c are formed, respectively. The second restricting portions 66a, 66b, and 66c are set in a retaining posture by plastic deformation after the insertion portions 68a, 68b, and 68c are inserted into the recesses 25a, 25b, and 25c.

  For example, as shown in FIGS. 6, 8A, and 9B, the first engaged portion 64a is moved relative to the protruding portion 24a. Is provided with an insertion portion 68a to be inserted into the recess 25a. In this relative movement, for example, the lower surface portion 60b of the protective cap 60 is the first protrusion portion 24a and the second protrusion portion, as in the movement from the state of FIG. 8A to the state of FIG. 8B. This is a relative movement in which the protective cap 60 is relatively rotated in the circumferential direction in a state where the protective cap 60 is in contact with the tip portions of the portion 24b and the third protrusion 24c. On one side in the circumferential direction of the insertion portion 68a (counterclockwise side with the central axis G when viewed in plan as shown in FIG. 9B), the insertion portion 68a extends from the recess 25a to the other side in the circumferential direction. A first restricting portion 69a that restricts slipping out is formed. In this structure, the insertion part 68a and the 1st control part 69a are comprised as the flat board piece part 67a extended integrally from the lower surface part 60b, and the 1st control part 69a extends more than the insertion part 68a. The amount is getting bigger. In addition, the end part (end part by the side of the central axis G) inserted in the recessed part 25a in the insertion part 68a is extended along the plane orthogonal to the central axis G, for example. That is, when the plane orthogonal to the central axis G is a horizontal plane, the end of the insertion portion 68a extends in the horizontal direction. Further, on the other circumferential side of the insertion portion 68a (clockwise side with the central axis G when viewed in plan as shown in FIG. 9B), the insertion portion 68a extends from the recessed portion 25a in the circumferential direction. A second restricting portion 66a for restricting to the side is formed. The second restricting portion 66a is configured as a flat plate piece portion extending from the lower surface portion 60b, and the amount extending from the lower surface portion 60b is larger than that of the insertion portion 68a and is approximately the same as that of the first restricting portion 69a. ing. Note that the “circumferential one side” is a clockwise side around the central axis G when viewed from the lower side as shown in FIG. 6A, and the “circumferential other side” is the same as FIG. When viewed from the lower side as in A), it is the counterclockwise direction with the central axis G as the center.

  As shown in FIGS. 6, 8 </ b> A, and 9 </ b> B, the second engaged portion 64 b and the third engaged portion 64 c are the same as the first engaged portion 64 a described above. It has a configuration. The second engaged portion 64b has an insertion portion on one side in the circumferential direction of the insertion portion 68b (counterclockwise side with the central axis G when viewed in plan as shown in FIG. 9B). A first restricting portion 69b that restricts 68b from slipping out from the recess 25b to the other side in the circumferential direction is formed. In this structure, the insertion part 68b and the 1st control part 69b are comprised as the flat board piece part 67b extended integrally from the lower surface part 60b, and the 1st control part 69b extends more than the insertion part 68b. The amount is getting bigger. An end portion (end portion on the central axis G side) inserted into the recess 25b in the insertion portion 68b also extends, for example, along a plane orthogonal to the central axis G, and the plane orthogonal to the central axis G is a horizontal plane. In this case, the end of the insertion portion 68b extends in the horizontal direction. Further, on the other circumferential side of the insertion portion 68b (clockwise side with the central axis G when viewed in plan as shown in FIG. 9B), the insertion portion 68b extends from the recessed portion 25b in the circumferential direction. A second restricting portion 66b that restricts removal to the side is formed. The second restricting portion 66b is configured as a flat plate piece portion extending from the lower surface portion 60b, and the amount extending from the lower surface portion 60b is larger than that of the insertion portion 68b, and is about the same as the first restricting portion 69b. ing.

  The third engaged portion 64c has an insertion portion on one side in the circumferential direction of the insertion portion 68c (counterclockwise side around the central axis G when viewed in plan as shown in FIG. 9B). A first restricting portion 69c that restricts 68c from coming off from the recess 25c to the other circumferential side is formed. In this structure, the insertion part 68c and the 1st control part 69c are comprised as the flat board piece part 67c extended integrally from the lower surface part 60b, and the 1st control part 69c extends more than the insertion part 68c. The amount is getting bigger. An end portion (end portion on the central axis G side) inserted into the recess 25c in the insertion portion 68c also extends, for example, along a plane orthogonal to the central axis G, and the plane orthogonal to the central axis G is a horizontal plane. In this case, the end of the insertion portion 68b extends in the horizontal direction. In addition, on the other circumferential side of the insertion portion 68c (clockwise side with the central axis G when viewed in plan as shown in FIG. 9B), the insertion portion 68c extends from the recessed portion 25c in the circumferential direction. A second restricting portion 66c that restricts to the side is formed. The second restricting portion 66c is configured as a flat plate piece portion extending from the lower surface portion 60b, and the amount extending from the lower surface portion 60c is larger than that of the insertion portion 68b and is approximately the same as that of the first restricting portion 69b. ing.

  Next, assembly of the protective cap 60 to the burner cap body 20 will be described with reference to FIGS. 8A and 9 mainly show the state of the burner cap body 20 at the time of assembly from the upper side, and a part of the protective cap 60 to be assembled (engaged portion 64 etc.) is indicated by a two-dot chain line. Shown virtually.

  The burner cap body 20 and the protective cap 60 configured as described above are assembled in the order of FIG. 8A, FIG. 9A, and FIG. 9B. When assembling, first, as shown in FIGS. 8A and 8B, a protective cap 60 in which the second restricting portions 66a, 66b, and 66c are not in a retaining posture is prepared, and the lower surface of the protective cap 60 is prepared. The part 60b (FIG. 6A, etc.) is disposed in contact with the tips of the first protrusion 24a, the second protrusion 24b, and the third protrusion 24c. At this time, the positional relationship is such that the center of the through hole 62a in the protective cap 60 and the central axis G of the through hole 20c in the burner cap body 20 are substantially matched when viewed in plan. Further, as shown in FIG. 8A, the protrusions 24a, 24b, and 24c are respectively viewed from the other side in the circumferential direction with respect to the insertion portions 68a, 68b, and 68c (as viewed in a plan view as shown in FIG. 8A). The positional relationship is slightly shifted in the clockwise direction around the central axis G. At this time, each insertion part 68a, 68b, 68c is each arrange | positioned in the circumferential direction between the protrusion part 24a and the protrusion part 24b, between the protrusion part 24b and the protrusion part 24c, and between the protrusion part 24c and the protrusion part 24a. Is done.

  As shown in FIG. 8B, in the protective cap 60 in which the second restricting portions 66a, 66b, 66c are not in the retaining posture, the second restricting portions 66a, 66b, 66c are, for example, the lower surface portion 60b (FIG. 6). ) From below. In this case, in the contact state as shown in FIG. 8A, the distances between the second restricting portions 66a, 66b, and 66c and the central axis G are the distances from the central axis G to the farthest positions in the protruding portions 24. It is sufficient to make it larger. By doing so, the second restricting portions 66a, 66b, 66c do not interfere with the projecting portions 24 during relative movement described later.

  Then, relative movement is performed from the state shown in FIG. 8A to the state shown in FIG. Specifically, the protective cap 60 maintains a positional relationship such that the center of the through hole 62a in the protective cap 60 and the central axis G of the through hole 20c in the burner cap body 20 are substantially matched when viewed in plan. 60, while maintaining the state in which the lower surface portion 60b (FIG. 6) of the 60 is in contact with the tip portions of the first projecting portion 24a, the second projecting portion 24b, and the third projecting portion 24c, On the other hand, the protective cap 60 is rotated relatively in the circumferential direction. That is, the protective cap 60 is rotated about the central axis G.

  In this configuration, when the direction of the central axis G shown in FIGS. 8 and 9 is the height direction, the recesses 25a, 25b, and 25c are formed at the same height. On the other hand, when the lower surface portion 60b of the protective cap 60 is in contact with the tip portions of the first projecting portion 24a, the second projecting portion 24b, and the third projecting portion 24c as shown in FIG. The end portions on the central axis G side of the insertion portions 68a, 68b, and 68c are maintained at the same height (in the height direction, the height of the range of the internal space of the recesses 25a, 25b, and 25c). It has become. When the relative rotation is performed while maintaining the contact state as described above, each of the insertion portions 68a, 68b, 68c moves in the horizontal direction (plane direction orthogonal to the central axis G) and in the circumferential direction. Then, as shown in FIG. 9 (A), it enters the respective recesses 25a, 25b, 25c extending in the horizontal direction and the circumferential direction.

  However, first restricting portions 69a, 69b, and 69c are formed adjacent to the insertion portions 68a, 68b, and 68c, respectively, and the distance between each tip portion of the first restricting portions 69a, 69b, and 69c and the central axis G is Since the distance between each concave portion 25a, 25b, 25c and the central axis G is shorter than the distance between the insertion portions 68a, 68b, 68c after entering the respective concave portions 25a, 25b, 25c, 9 (A), the first restricting portions 69a, 69b, and 69c contact the outer peripheral portions of the projecting portions 24a, 24b, and 24c without passing through the concave portions 25a, 25b, and 25c, respectively. Directional rotation is regulated.

  At this time, as shown in FIG. 9A, each of the second restricting portions 66a, 66b, and 66c that are not in the retaining posture has each of the first restricting portions 69a across the concave portions 25a, 25b, and 25c in the circumferential direction. , 69b and 69c are located on the opposite side. Since these second restricting portions 66a, 66b, 66c are all configured as extending pieces extending downward from the lower surface portion 60c, the second restricting portions 66a, 66b, 66c are shown in FIG. ) Fa, Fb, and Fc in the direction of Fa, Fb, Fc, and the base end positions 70a, 70b, and 70c (the second restricting portions 66a, 66b, and 66c in the lower surface portion 60c extend from the lower surface portion 60c). The second restricting portions 66a, 66b, and 66c can be set in a retaining posture by being processed so as to be bent toward the center of the burner cap body 20 from the position). In the retaining posture shown in FIG. 9B, the distance between the tip of the second restricting portions 66a, 66b, and 66c and the central axis G is the distance from the central axis G to each of the concave portions 25a, 25b, and 25c. It is shorter than the distance from the central axis G. For this reason, even if it is going to return to the position as shown in FIG. 9A from the state as shown in FIG. 9B, the second restricting portions 66a, 66b and 66c do not pass through the recesses 25a, 25b and 25c, respectively. It abuts on the outer periphery of each protrusion 24a, 24b, 24c, and further rotation is restricted.

  As described above, in this configuration, the plurality of projecting portions 24 are formed on the upper surface portion 22 side of the burner cap main body 20, and the opposing surface side of the protective cap 60 (the surface side facing the burner cap main body 20 in the cover member 62). A plurality of engaged portions 64 that engage with the plurality of protruding portions 24 are provided. As described above, since the plurality of protruding portions 24 formed on the burner cap body 20 and the plurality of engaged portions 64 formed on the protective cap 60 are engaged and fixed, a dedicated assembly component is provided. Can be suppressed, and the increase in the number of parts and the burden of parts management can be reduced.

  Further, the engaged portion 64 of the protective cap 60 is formed with insertion portions 68a, 68b, 68c that are inserted into the plurality of concave portions 25a, 25b, 25c by relative movement with respect to the protruding portion 24, respectively. 68a, 68b, 68c on one side in the circumferential direction, first restricting portions 69a, 69b, 69c that restrict the insertion portions 68a, 68b, 68c from coming out from the recesses 25a, 25b, 25c to the other side in the circumferential direction. Are formed respectively. Then, on the other circumferential side of each of the insertion portions 68a, 68b, 68c, there is a second restriction that restricts the insertion portions 68a, 68b, 68c from coming out from the recesses 25a, 25b, 25c to the one side in the circumferential direction. Restricting portions 66a, 66b, and 66c are formed, respectively. Since it is configured in this manner, each insertion portion 68a, 68b, 68c is formed in each of the recesses 25a, 25b by an operation that does not require a simple and strong force of moving the protective cap 60 relative to the burner cap body 20. , 25c can be connected. Furthermore, since the second restricting portions 66a, 66b, 66c are configured to be in a retaining posture by plastic deformation after being in such a connected state, a very strong force is not applied from the upper surface side of the protective cap 60. However, by the plastic deformation process using the gap between the cover member 62 and the burner cap body 20, the insertion portions 68a, 68b, and 68c can be in a stable connection state that is difficult to come off to one side in the circumferential direction.

  In particular, in this configuration, a strong impact is applied to the upper surface portion 22 of the protective cap 60 in either the step of inserting the insertion portions 68a, 68b, 68c into the recesses 25a, 25b, 25c or the step of plastically deforming the second restricting portion. It is not necessary to press the upper surface portion 22 with a very strong force, and the upper surface portion 22 of the protective cap 60 is less likely to be damaged. For example, when shifting as shown in FIGS. 8A, 9A, and 9B, the protective cap 60 and the burner cap body 20 are held by a jig or the like to such an extent that the contact state is maintained. There is no need to press or shock with a very strong force from the upper surface side of the protective cap 60. Further, when bending as shown in FIG. 9B, a force may be applied to the inner position of the burner cap 10 with a jig or the like, and the direction of the force is also in the horizontal direction. The influence on (especially the upper surface portion of the protective cap 60) is further reduced.

  Each of the plurality of second restricting portions 66a, 66b, and 66c is configured as an extending piece extending downward from the lower surface portion 60b, and each extending piece has a base end position (lower surface portion on the lower surface portion side). The base end position 70a, 70b, 70c) at 60b is bent to the center side of the burner cap body 20, and is set in a retaining posture. In this configuration, when each extended piece is deformed into the retaining posture, it may be performed by a relatively simple process of bending them to the center side of the burner cap body 20 as shown in FIG. 9B. It is easy to suppress the work load, and it is difficult for troubles in work to occur. Particularly, since the bending direction of the extending piece is the direction toward the center side, the extending piece is linearly directed toward the center side from the gap near the extending piece (the gap between the cover member 62 and the burner cap body 20). If it is pushed out, it can be easily set in a retaining posture. Therefore, even within the gap, it becomes easier to process from a closer position.

[Other Embodiments]
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  In the above embodiment, the plurality of second restricting portions 66a, 66b, 66c are all set in the retaining posture by bending from the respective base end positions 70a, 70b, 70c to the center side of the burner cap body 20, The configuration is not limited to this. For example, any or all of the plurality of second restricting portions 66a, 66b, 66c are, for example, positions close to the central axis G from the positions shown in the first embodiment (positions closer to the central axis G than the protrusions 24). It is possible to adopt a configuration in which the posture is prevented from being removed by bending to the outside of the burner cap body 20.

  In the said embodiment, although the 1st control part 69a, 69b, 69c was comprised as a board piece respectively integral with insertion part 68a, 68b, 68c, these may be comprised as a separate board piece. . Further, the first restricting portion is not a plate piece as long as the first restricting portion is configured not to come out through the recesses 25a, 25b, and 25c and to come into contact with the protruding portion 24 when the protective cap 60 is relatively moved. The protrusion etc. which protrude from the lower surface part 60c may be sufficient.

DESCRIPTION OF SYMBOLS 1 ... Heating cooker 10 ... Burner cap 20 ... Burner cap main body 22 ... Upper surface part 24 ... Projection part 25a, 25b, 25c ... Recessed part 60 ... Protection cap 62 ... Cover member 64 ... Engaged part 66a, 66b, 66c ... No. 2 restriction | limiting part 68a, 68b, 68c ... insertion part 69a, 69b, 69c ... 1st restriction | limiting part 70a, 70b, 70c ... proximal end position

Claims (2)

A heating cooker having a burner cap comprising an annular burner cap body and a protective cap fixed on the burner cap body,
In the burner cap main body, on the upper surface portion side facing the protective cap, protrusions that engage with the protective cap are provided at a plurality of positions in the circumferential direction of the burner cap main body,
The protective cap includes a cover member that covers the burner cap main body, and a plurality of engaged portions that engage with the plurality of protruding portions are provided on opposite sides of the cover member facing the burner cap main body, respectively. And
The protrusion has a recess formed on the outer peripheral side of the burner cap body or on the center side of the burner cap body,
Each of the engaged parts is formed with an insertion part to be inserted into the plurality of concave parts by relative movement with respect to the protrusion part, and each of the insertion parts is provided on one side in the circumferential direction of the insertion part. Are formed in each of the insertion portions on the other circumferential side of each of the insertion portions. Each of the second restricting portions for restricting the escape to one side in the circumferential direction is formed,
The heating cooker characterized in that the second restricting portion has a retaining posture by plastic deformation after each of the insertion portions is inserted into the recess.   Each of the plurality of second restricting portions is configured as an extending piece extending downward from each base end position on the lower surface portion side of the cover member, and each of the extending pieces extends from the base end position. The cooking device according to claim 1, wherein the heating cooker is in a retaining posture by being bent toward the center side of the burner cap body.

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