JP4334510B2 - rice cooker - Google Patents

Description

The present invention relates to a rice cooker for home appliances, and relates to a structure for strengthening the flange portion of the pan.

  Electric rice cookers are now a daily necessities and a major product among home appliances. The basic function of this rice cooker is a simple function of cooking rice, but in order to differentiate it as a product, various contrivances have been made by each home appliance maker regarding techniques for deliciously cooking rice. In such a background, when the rice cooker pot is made of carbon material, the far-infrared radiation function and deodorizing function derived from the properties of carbon are given, and rice can be cooked more deliciously, and the product can be differentiated. I can plan. However, the structure of the pan of the rice cooker has a cylindrical shape with an open top surface, and a flange portion protruding outward is formed on the outer periphery of the open end portion. Since this flange portion protrudes from the side surface, it is easy to hit an object, and since the force tends to concentrate when it hits, the strength is weak and it is easy to crack. As described above, when the pan is formed of a carbon material, there is a problem that the flange portion is more easily broken.

As a conventional technique that can cope with such a problem, for example, a slight gap is formed between the end of the flange part in the radial direction of the pan, and a metal flange ring is crimped over the outer periphery of the flange part. There was something to install by. Thereby, even when a strong impact is applied due to dropping or the like, the flange ring cushions the impact force, so that this impact force can be prevented from being directly transmitted to the pan, and a stronger pan can be provided.
(For example, patent document 1).

JP 2000-107022 (2nd page, FIG. 1)

However, since the above technique is a structure in which the flange ring is attached by caulking, an excessive force may be applied to the pan when the flange ring is attached to the pan, and the pan may be damaged. Thereby, there existed a problem that the intensity | strength of a pan deteriorated or the external appearance of a pan was impaired. In particular, when the pan is made of a carbon material, the above problem becomes more noticeable because carbon is weaker than metal. Further, when a hole is made for positioning the ring, there is a problem that the strength of the carbon material is further reduced.

The present invention has been made to solve the above-described problems, and it is intended to obtain a pot-shaped container for a rice cooker that is hard to break and does not impair the aesthetic appearance even when the flange portion is impacted by dropping or the like. Objective.

The rice cooker according to the present invention comprises a condensate of powder mainly composed of carbon, and includes a pot-shaped container having a flange portion on the outer periphery of the upper surface opening, and the pot-shaped container is formed of a material that is harder to break than carbon. contact with the entire outer periphery of the flange portion, and have a same or protruding annular member and the outer periphery of the flange portion, said annular member, the divided on the circumference, wherein the divided portion is bonded flange portion The divided portions are connected to each other through a connecting point provided at an end, and are opened and closed with the connecting point as a fulcrum.

In the present invention, since the resin-like annular member is provided in the flange portion of the pan mainly composed of carbon, even when the flange portion is subjected to an impact due to dropping or the like, the force transmitted to the flange portion is reduced and the strength of the flange portion is increased. Can be strengthened.

Embodiment 1 FIG.
Hereinafter, the pot of the rice cooker in Embodiment 1 of this invention is demonstrated. In the following drawings, the same numbered components are the same.

1 is a perspective view of a pan of a rice cooker according to Embodiment 1. FIG. As shown in FIG. 1, the convex part 2 is provided in four places by the predetermined space | interval on the surface of the upper part of the side surface of the pan main body 1 which is a pan-shaped container. A flange portion 3 protruding in a collar shape is provided on the outer periphery of the upper surface opening of the pan body 1. And the resin-made annular member 4 is provided so that it may be pinched | interposed into the flange part 3 and the convex part 2. FIG.

2 is a configuration diagram showing the configuration of the pan of the rice cooker in the first embodiment. FIG. 2 (a) is a front view, FIG. 2 (b) is a bottom view seen from below, FIG. (C) is sectional drawing cut | disconnected by the XX plane of (b) of FIG. In FIG. 2B, 5 is the bottom of the pan. The pan body 1 is made by compressing or overheating and condensing powder mainly composed of carbon, and cutting. Or you may process by putting the powder grain which has carbon as a main component into a pan-shaped type | mold.

As shown in FIG. 2C, the flange portion 3 has a shape protruding outward from the upper surface opening of the pan body 1. The convex part 2 is provided in the upper part of the side surface of the pan main body 1 as shown to (a) of FIG. 2, and as shown to (b) of FIG. In four places. The convex portion 2 may be provided with the same material as the pan body 1 at the same time when the pan body 1 is cut or formed, or may be formed of resin or the like and attached by adhesion or the like.

The annular member 4 is formed of, for example, a resin that is harder to break than carbon, and is a circular member having a thickness and a width as shown in FIGS. 2 (a) and 2 (b). is there. As shown in FIG. 2C, the annular member 4 is in contact with the flange portion 3 so as to be sandwiched between the flange portion 3 and the four convex portions 2 at the upper portion of the side surface of the pan body 1. Yes. The reason why the annular member 4 is made of resin is that strength is obtained while having heat resistance. The pan body 1 is used by putting it in a pan storage part of a rice cooker body (not shown) and closing the lid of the rice cooker (not shown).

Next, a procedure for attaching the annular member 4 to the pan body 1 will be described. FIG. 3 is a diagram illustrating a procedure for attaching the annular member 4 in the first embodiment to the pan body 1. As shown to (a) of FIG. 3, the cyclic | annular member 4 is arrange | positioned at the lower side of the pan main body 1, and as shown to (b) of FIG. Move to. Next, as shown in (c) of FIG. 3, the annular member 4 is moved to a place where it comes into contact with the convex portion 2. And as shown to (d) of FIG. 3, the cyclic | annular member 4 gets over the convex part 2 which exists in four places on the side surface of the pan main body 1 by applying force further upward with respect to the cyclic | annular member 4. FIG. Thereby, in this position, the annular member 4 is fixed by the four convex portions 2 and the flange portions 3. With such a configuration, the flange portion 3 and the annular member 4 are brought into close contact with each other, and the strength of the flange portion is enhanced. The thickness of the convex portion 2 is not limited as long as the annular member 4 can be overcome and can hold the annular member 4 as described above, and is preferably 1 mm or less, for example. Moreover, since the annular member 4 is formed of resin, the pan body 1 can be attached without being damaged.

Next, the force applied to the flange portion 3 of the pan body 1 having such a configuration will be described. For example, when the pan body 1 falls and the flange portion 3 collides with the floor, the annular member 4 protrudes in the radial direction from the flange portion 3. To join. Therefore, the force applied to the annular member 4 causes the annular member 4 to be deformed from the elastic region to the plastic region, thereby absorbing the impact energy. As a result, the impact energy generated when colliding with the floor disappears or is somewhat reduced and is transmitted from the annular member 4 to the flange portion 3. Thus, the impact force applied to the flange portion 3 is absorbed by the annular member 4, and the impact force transmitted directly to the flange portion 3 is reduced. Thereby, the flange part 3 becomes a strong structure strong against impacts such as dropping.

As described above, by adding the annular member 4 to the pan of the rice cooker of Embodiment 1, the strength of the flange portion 3 of the pan body 1 can be enhanced. Moreover, since it was set as the structure where the annular member 4 is easy to attach, the damage given to a pan main body at the time of attachment can be suppressed.

  In the first embodiment, the example in which four convex portions 2 are provided on the side surface of the pan body 1 is shown, but any number other than four may be used as long as it is two or more. Moreover, although the example which protruded the annular member 4 from the flange part 3 was shown, the same as the flange part 3 may be sufficient. In this case, even when an impact force is applied to the flange portion 3, the impact force is absorbed by the annular member 4, so that the flange portion is hardly broken.

Embodiment 2. FIG.
In Embodiment 1, the annular member is fixed by being sandwiched between the convex portion and the flange portion, but Embodiment 2 shows an example in which an annular member having another structure is used. FIG. 4 is a configuration diagram showing the structure of the annular member 6 according to the second embodiment. FIGS. 4A and 4B are views showing the state in which the annular member 6 is opened. (D) is a figure which shows the state which the annular member 6 closed. 4 (a) and 4 (c) are plan views of the annular member, and FIGS. 4 (b) and 4 (d) are front views of the annular member. As shown in FIG. 4 (a), the annular member 6 is made of, for example, a resin that is harder to break than carbon, and is divided into a divided part 6a and a divided part 6b on the circumference in two on the right and left sides. One ends of the portions 6a and 6b are connected by a connecting portion 6c at one end. And the division parts 6a and 6b of this annular member 6 have a structure that opens and closes with the coupling part 6c as a fulcrum. Moreover, as shown in FIG. 4 (b), a groove 6f is provided on the inner side surfaces of the divided portions 6a and 6b. The groove 6f is formed by the thickness of the flange portion 3 of the pan body 1 and the thickness of the pan. It is the same dimension as the length of the protrusion part of the flange part 3 which does not include this, or the dimension beyond it. As a result, the groove 6f is engaged with the flange portion 3.

Further, as shown in FIG. 4C, when the dividing portions 6a and 6b are closed, a coupling portion 6d at one end of the dividing portion 6a and a coupling portion 6e at one end of the dividing portion 6b are provided. It has a structure that fits together. In this state, the annular member 6 can be fixed in a closed state by screwing a hole opened in the center of the coupling portions 6d and 6e.

Next, a procedure for attaching the annular member 6 to the pan body 1 will be described. FIG. 5 is a diagram for explaining a procedure for attaching the annular member 6 to the pan body 1 according to the second embodiment. As shown to (a) of FIG. 5, the groove | channel 6f of the division | segmentation part 6a of the annular member 6 is made to engage with the flange part 3 of the pan body 1 in the state which opened the annular member 6. FIG. Next, as shown in FIG. 5B, the dividing portion 6 b is moved in the direction of the flange portion 3, and the groove portion f of the dividing portion 6 b is engaged with the flange portion 3. And the coupling | bond part 6d in the one end of the division | segmentation part 6a and the coupling | bond part 6e in the one end of the division | segmentation part 6b fit, the center hole of the division | segmentation part 6d and 6e is screwed, and the annular member 6 is flanged part 3 Secure to.

As mentioned above, in Embodiment 2, since it is set as the structure covered with the annular member 6 over the whole surface of the flange part 3 of the pan main body 1, strengthening the intensity | strength of the flange part 3 further from Embodiment 1. I can do it. Further, since the annular member 6 is divided into the divided portions 6a and 6b, and the divided portions 6a and 6b are attached to the flange portion 3 from the outside, the annular member 6 is more easily attached. Damage to the pan body 1 can be further suppressed. Moreover, you may enlarge the dimension of the connection parts 6c and 6d of an annular member, and may use it as a handle of the pan main body 1. FIG. Or you may attach the handle of the pan main body 1 so that the connection parts 6c and 6d of an annular member may be covered.

Embodiment 3 FIG.
In the second embodiment, the structure in which the annular member is divided into the left and right two parts is shown. However, in the third embodiment, an example in which the annular member is divided into the upper and lower parts is shown. 6 is a configuration diagram of the annular member 7 according to the third embodiment. FIGS. 6A and 6B are perspective views of the annular member 7. FIG. 6C is a plan view of the annular member 7. FIG. FIGS. 6D and 6E are front views of the annular member 7.

As shown in FIG. 6 (a), the annular member 7 is made of, for example, a resin that is harder to break than carbon, and is divided into two upper and lower parts by a divided part 7a and a divided part 7b on its side surface. Then, the split portions 7a and 7b are vertically overlapped with the flange portion 3 interposed therebetween, and the connecting portion 7c of the split portion 7a and the connecting portion 7e of the split portion 7b are fixed by screwing or the like. Similarly, the connecting portion 7d of the dividing portion 7a and the connecting portion 7f of the dividing portion 7b are fixed by screwing or the like. Further, the divided portions 7a and 7b are respectively provided with grooves 7g and 7h on the annular inner surface, and the inner diameters thereof are the same as the outer dimensions of the flange portion 3, respectively. As a result, the grooves 7g and 7h are engaged with the flange portion 3.

Next, a procedure for attaching the annular member 7 to the pan body 1 will be described. FIG. 7 is a diagram for explaining a procedure for attaching the annular member 7 to the pan body 1 in the third embodiment. As shown to (a) of FIG. 7, the division parts 7a and 7b of the annular member 7 are arrange | positioned up and down so that the flange part 3 of the pan main body 1 may be pinched | interposed. And as shown to (b) of FIG. 7, the division parts 7a and 7b are moved toward the flange part 3 of the pan main body 1, and as shown to (c) of FIG. 7, division part 7a and 7b, Are coupled with the flange portion 3 interposed therebetween. Thereby, the groove 7g inside the dividing portion 7a and the groove 7h inside the dividing portion 7b are fitted into the flange portion 3. Then, as described above, the coupling portion 7c and the coupling portion 7e, and the coupling portion 7d and the coupling portion 7f are fixed by screwing or the like.

As mentioned above, in Embodiment 3, since it is set as the structure covered with the annular member 7 over the whole surface of the flange part 3 of the pan main body 1, strengthening the intensity | strength of the flange part 3 further from Embodiment 1. I can do it. In addition, since the annular member 7 is divided into upper and lower divided parts 7a and 7b and the divided parts 7a and 7b are attached to the flange part 3 from the outside, the annular member 7 is more easily attached. The damage to the pan body during installation can be further suppressed. Moreover, you may enlarge the dimension of the connection parts 6c and 6d of an annular member, and may use it as a handle of the pan main body 1. FIG. Or you may attach the handle of the pan main body 1 so that the connection parts 6c and 6d of an annular member may be covered. Further, even when the flange portion is short as shown in the sixth embodiment described later, the effect that it is easy to hold can be obtained if the annular members 1 to 3 are provided.

Embodiment 4 FIG.
In the first to third embodiments, an example in which the flange portion 3 is reinforced by covering it with an annular member has been shown. However, in the fourth embodiment, the surface of the flange portion 3 is coated with, for example, a resin that is harder to break than carbon. It shows about the annular member to form. (A) of FIG. 8 is a perspective view of the pan body 1 of Embodiment 4, and (b) of FIG. 8 is a cross-sectional view when cut along the XX plane of (a) of FIG. As shown in FIG. 8A, the annular member 8 is provided on the surface of the flange portion 3 of the pan body 1 by coating with a resin or the like. As shown in FIG. 8B, the annular member 8 is applied to the front and back surfaces of the flange portion 3 with a predetermined thickness over the entire outer periphery. Further, the annular member 8 may be coated such that only the upper surface of the flange portion 3 extends to the outer peripheral edge of the flange portion 3 or protrudes, or only the lower surface of the flange portion 3 is coated on the outer peripheral edge of the flange portion 3. Or may be coated so as to protrude.

As mentioned above, in Embodiment 4, since it is set as the structure covered with the annular member 8 over the whole surface of the flange part 3 of the pan main body 1, the intensity | strength of the flange part 3 can be strengthened. Moreover, since the annular member 8 is provided by coating, the number of parts as the annular member can be reduced. Moreover, the damage given to a pan main body at the time of attachment can be suppressed more.

Embodiment 5 FIG.
In the first to fourth embodiments, an example in which the flange portion 3 is reinforced by covering it with an annular member has been shown. However, in the fifth embodiment, a plurality of convex portions are provided on the back surface of the flange portion 3 in a streak shape. Show about. FIG. 9 is a perspective view of the pan body 1 of the fifth embodiment. As shown in FIG. 9, a plurality of the same material as the pan body is formed on the back surface of the flange 3 of the pan body 1 when the pan body 1 is processed. The convex part 9 is provided. Alternatively, after processing the pan body 1, a plurality of convex portions 9 made of resin or the like are provided by bonding or the like. The convex portion 9 is provided in a streak shape so as to be in contact with the back side end portion of the flange portion 3, the back surface of the flange portion 3, and the side surface of the pan body 1.

As described above, in the fifth embodiment, since the plurality of convex portions 9 are provided on the back surface of the flange portion 3 of the pan body 1, the strength of the flange portion 3 can be enhanced.

Embodiment 6 FIG.
In the first to fifth embodiments, an example in which the flange portion 3 is reinforced is shown, but in the sixth embodiment, a structure that reinforces the strength of the flange portion 3 itself is shown. FIG. 10 is a cross-sectional view of the flange portion 3 of the pan body 1 of the sixth embodiment. In FIG. 10, T is the thickness of the side surface of the pan body 1, and L is the length of the protruding portion in the radial direction of the flange portion 3 including the thickness of the pan body 1. The length L of the protrusion is set to be not more than three times the thickness T. That is, the dimensions are such that L <T × 3. In this way, by setting the dimension L of the protruding portion and the thickness T of the pan body to these dimensions, a bending moment generated at the root portion of the flange portion 3 is reduced, and a structure in which shearing or bending stress is reduced is obtained.

As described above, in the sixth embodiment, since the flange portion 3 itself of the pan body 1 is reinforced, a compact and strong flange portion 3 can be configured. Moreover, the strength of the flange portion 3 can be further strengthened when combined with the annular member of the first to fifth embodiments.

Embodiment 7 FIG.
In the first to sixth embodiments, an example in which the strength of the flange portion 3 is strengthened has been shown. However, in the seventh embodiment, a configuration of a material for strengthening the strength of the pan itself including the flange portion 3 will be described. FIG. 11 is a cross-sectional view of the flange portion 3 of the pan body 1 of the seventh embodiment. In the case of forming a combined body mainly composed of carbon, first, large particles 10 mainly composed of carbon as shown in FIG.
And this large granular material 10 and the small granular material 11 which has carbon as a main body are mixed, and the whole is compressed or heated and a condensate is formed. Thereafter, this condensate is cut into a pot shape to form a pot-shaped container. Alternatively, the large granular material 10 and the small granular material 11 as described above are mixed and poured into a pan-shaped mold to form a pan-shaped container. Thus, since it is comprised from various large and small powder grains, it becomes a structure where the small and large irregularly shaped powder grains are intertwined and the bonding force between the carbon grains and the grains is further strengthened. This large granular material 10 may be generated by roughly cutting a carbon material, or may be generated by solidifying carbon particles in a dumpling shape. Further, the small particles 11 may be generated by finely cutting a carbon material, or the carbon particles may be generated by hardening the carbon particles larger than the large particles 10. Or only the large granular material 10 or only the small granular material 11 may be sufficient. Although only the peripheral part of the flange part 3 is shown in FIG. 11, the whole pot-shaped container also has the same cross-sectional structure.

As described above, in the seventh embodiment, since the pan including the flange portion 3 is reinforced, a pan having a compact and strong flange portion can be configured. Moreover, when combined with the annular member of the first to fifth embodiments, the strength of the flange portion 3 can be further strengthened.

In the description of the first to seventh embodiments, an example in which the pan-like container 1 is circular is shown, but it may be oval or rectangular. Moreover, although the case where there is no handle in the flange part 3 was shown, you may attach a handle to a flange part or an annular member. Further, the annular members of the first to fourth embodiments may cover most of the flange portion 3 even if there is a partially cut portion.

It is a perspective view of the pan of the rice cooker by Embodiment 1 of this invention. It is a block diagram of the pot of the rice cooker by Embodiment 1 of this invention. It is a figure explaining the procedure which attaches the annular member 4 to the pan main body 1 of the rice cooker by Embodiment 1 of this invention. It is a block diagram of the annular member 6 by Embodiment 2 of this invention. It is a figure explaining the procedure which attaches the annular member 6 to the pan main body 1 of the rice cooker by Embodiment 2 of this invention. It is a block diagram of the annular member 7 by Embodiment 3 of this invention. Explanatory drawing which attaches the annular member 7 to the pan main body 1 of the rice cooker by Embodiment 3 of this invention. It is the perspective view and sectional drawing of a pan by Embodiment 4 of this invention. It is a perspective view of the pan by Embodiment 5 of this invention. It is sectional drawing of the flange part of the pan by Embodiment 6 of this invention. It is sectional drawing of the flange part of the pan by Embodiment 7 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pan body, 2 convex part, 3 flange part, 4 annular member, 5 bottom part, 6 annular member, 7 annular member, 8 annular member, 9, convex part, 10 large granular material, 11 small granular material

Claims (3)

It consists of a condensed body of powder mainly composed of carbon, and comprises a pan-like container having a flange on the outer periphery of the upper surface opening,
The pot-like container is in contact with the entire outer periphery of the flange portion made of hard material crack of carbon, and have a circular member the same or projecting outer periphery of the flange portion,
The annular member is divided on a circumference thereof and has a structure in which the divided portions are joined to cover the outer periphery of the flange portion, and the divided portions are mutually connected via a joining point provided at an end portion. The rice cooker has a structure that is connected to each other and opens and closes with the connection point as a fulcrum . It consists of a condensed body of powder mainly composed of carbon, and comprises a pan-like container having a flange on the outer periphery of the upper surface opening,
The pot-like container is in contact with the entire outer periphery of the flange portion made of hard material crack of carbon, and have a circular member the same or projecting outer periphery of the flange portion,
The said annular member consists of two members divided | segmented up and down by the side surface, The rice cooker characterized by having the structure which couple | bonds the said divided | segmented part and covers the outer periphery of a flange part .   The rice cooker according to claim 1 or 2, wherein the annular member is made of resin.

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