CN113490815A - Heating cooker - Google Patents

Abstract

The heating cooker according to the present disclosure includes: a housing having a pair of left and right side walls, an upper wall, a lower wall, and a back wall, and having a heating chamber; a support wall having a first wall portion that supports the left and right side walls from below and is joined to the left and right side walls from below, a second wall portion that is recessed downward inside the first wall portion in a plan view and receives the lower wall, and a bottom wall that is recessed downward inside the second wall portion in a plan view; and an adhesive portion that adheres the outer peripheral edge portion of the lower wall to the support wall. The adhesive portion has, as first and second regions, regions extending from the outer peripheral edge of the lower wall to gaps between the left and right side walls and the first wall portion on the left and right sides, respectively.

Description

Heating cooker

Technical Field

The present disclosure relates to a heating cooker.

Background

Conventionally, a heating cooker for cooking a food as an object to be heated by microwaves has been proposed (for example, see patent document 1).

The heating cooker of patent document 1 has a heating chamber for accommodating an object to be heated, and is provided with a partition plate for partitioning a power feeding chamber provided adjacent to a lower side of the heating chamber from the heating chamber. An adhesive material for fixing the partition plate to the wall of the heating chamber is applied to the outer periphery of the partition plate.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2010-261695

Disclosure of Invention

However, there is a gap between the wall portion and the wall portion of the heating chamber, and there is a possibility that steam or the like generated in the heating chamber leaks from the gap at a portion where the adhesive is not filled in the gap. In particular, the internal components such as the motor and the electric circuit are disposed below the partition plate, and when steam and water droplets adhere to these internal components, there is a possibility that the internal components may malfunction. As a result, the reliability of the heating cooker may be reduced.

Accordingly, an object of the present disclosure is to solve the above-described problems and provide a heating cooker with improved reliability.

A heating cooker according to one aspect of the present disclosure includes: a casing forming a heating chamber for accommodating an object to be heated, the casing being formed of a pair of left and right side walls, an upper wall, a lower wall, and a back wall, the left and right side walls being provided with a left-right direction interval from the lower wall; a support wall having a first wall portion that supports the left and right side walls and the lower wall from below and is joined to the left and right side walls from below, a second wall portion that is recessed downward inside the first wall portion in a plan view and receives the lower wall, and a bottom wall that is recessed downward inside the second wall portion in a plan view and forms a power feeding chamber between the bottom wall and the lower wall; and an adhesive portion that adheres an outer peripheral edge portion of the lower wall to the support wall. The adhesive portion has, as first and second regions, regions extending from the outer peripheral edge of the lower wall to gaps between the left and right side walls and the first wall portion on the left and right sides, respectively.

According to the heating cooker of the present disclosure, reliability can be improved.

Drawings

Fig. 1 is a perspective view of a heating cooker according to an embodiment.

Fig. 2 is a perspective view of a heating cooker according to the embodiment.

Fig. 3 is a schematic view of the heating chamber in the embodiment as viewed from the front.

Fig. 4 is a plan view of the lower wall of the heating chamber in the embodiment.

Fig. 5 is a partially enlarged view of the menu display unit in the embodiment.

Fig. 6 is a front view of the door in the embodiment.

Fig. 7 is a rear view of the door in the embodiment.

Fig. 8 is a sectional view a-a of fig. 7.

Fig. 9A is a sectional view showing a state of the gasket according to the embodiment (a state where the door is opened).

Fig. 9B is a cross-sectional view showing a state of the gasket according to the embodiment (a state in the middle of closing the door).

Fig. 9C is a cross-sectional view showing a state of the gasket according to the embodiment (a state after the door is closed).

Fig. 10 is a sectional view of a gasket in a modification.

Fig. 11 is a sectional view of a gasket according to another modification.

Fig. 12 is a cross-sectional view including the side walls, lower wall, and support wall of an embodiment.

Fig. 13 is a plan view of the support wall in a state where the lower wall of the embodiment is placed.

Fig. 14A is an enlarged cross-sectional view (left side) of the periphery of the bonding portion in the embodiment.

Fig. 14B is an enlarged cross-sectional view (left side) of the periphery of the bonding portion in the embodiment.

Fig. 14C is an enlarged cross-sectional view (left side) of the periphery of the bonding portion in the embodiment.

Fig. 15 is an enlarged sectional view (right side) of the periphery of the bonding portion in the embodiment.

Fig. 16 is an enlarged sectional view (front side) of the periphery of the bonding portion in the embodiment.

Detailed Description

A heating cooker of a first aspect includes: a casing forming a heating chamber for accommodating an object to be heated, the casing being formed of a pair of left and right side walls, an upper wall, a lower wall, and a back wall, the left and right side walls and the lower wall being provided with a left and right spacing therebetween; a support wall having a first wall portion that supports the left and right side walls and the lower wall from below and is joined to the left and right side walls from below, a second wall portion that is recessed downward inside the first wall portion in a plan view and receives the lower wall, and a bottom wall that is recessed downward inside the second wall portion in a plan view and forms a power supply chamber between the bottom wall and the lower wall; and an adhesive portion that adheres an outer peripheral edge portion of the lower wall and the support wall. The adhesive portion has, as first and second regions, regions extending from the outer peripheral edge of the lower wall to gaps between the left and right side walls and the first wall portion on the left and right sides, respectively.

According to such a configuration, the gap between the left and right side walls and the first wall portion of the support wall is sealed by the adhesive portion, so that the steam generated in the heating chamber can be prevented from leaking from the gap and falling down to the internal member provided in the space below the heating cooker. This can suppress the failure of the internal components of the heating cooker, and can improve the reliability of the heating cooker.

In the cooking device according to the second aspect, in particular, the adhesive portion according to the first aspect further includes a third region extending in the left-right direction so as to connect the first region and the second region, and a width of the first region and a width of the second region are wider than a width of the third region.

With this configuration, the gap between the left and right side walls and the first wall portion of the support wall can be more reliably sealed.

In the heating cooker of the third aspect, in particular, a guide line for guiding the application region of the adhesive portion is drawn on the surface of the first wall portion of the first or second aspect.

With this configuration, the gap between the left and right side walls and the first wall portion of the support wall can be more reliably sealed.

(embodiment mode)

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 1 to 3 are schematic diagrams showing a heating cooker 2 according to an embodiment. Fig. 1 and 2 are perspective views of the heating cooker 2 viewed from different angles, and fig. 3 is a schematic view of a cross section of the heating chamber 4 viewed from the front.

The heating cooker 2 shown in fig. 1 and 2 is an appliance for cooking a food (not shown) as an object to be heated by heating. The heating cooker 2 of the present embodiment includes a magnetron, a heater, and a steam generator (none of which is shown) as a heating portion for heating an object to be heated. The magnetron is a microwave generating unit that generates microwaves, and the microwaves are supplied to the heating chamber 4 from an antenna (microwave radiating unit) provided in a feeding chamber 19 described later. The heater is a member for heating the object to be heated in the heating chamber 4 by radiation. The steam generator supplies steam to the heating chamber 4. The heating cooker 2 of the present embodiment has a function of cooking an object to be heated by microwaves, and is referred to as a microwave oven.

As shown in fig. 1 and 2, the heating cooker 2 includes a casing 6 forming a heating chamber 4, a door 8, and an operation unit 10.

The heating chamber 4 is a space for disposing an object to be heated. As shown in fig. 1 and 2, the heating chamber 4 is formed by a plurality of inner wall surfaces of the casing 6. Specifically, as shown in fig. 3, the heating chamber 4 is formed into a substantially rectangular parallelepiped by a pair of left and right side walls 12A, 12B, an upper wall 14, a lower wall 16, and a rear wall 18. The side walls 12A, 12B may also be referred to as "left and right side walls" and "side surfaces", the upper wall 14 may also be referred to as "top surface" or "upper surface", the lower wall 16 may also be referred to as "bottom surface" or "lower surface", and the inner wall 18 may also be referred to as "back surface".

As shown in fig. 3, a support wall 17 is provided as a member for supporting the side walls 12A, 12B and the lower wall 16. The support wall 17 supports the lower wall 16 from below, and a power supply chamber 19 is formed between the support wall 17 and the lower wall 16 (see fig. 12). As a member for bonding the lower wall 16 and the support wall 17, bonding portions 21A and 21B are provided. The adhesive portions 21A and 21B and the support wall 17 will be described later.

Referring back to fig. 1 and 2, the door 8 opens and closes the heating chamber 4. The door 8 is rotatably fixed to the front surface 40 of the housing 6. The door 8 of the present embodiment is a "vertically-opened" door that rotates vertically about an axis extending in the horizontal direction as a rotation axis.

The operation unit 10 is a component for the user to select and operate a cooking menu. The operation unit 10 of the present embodiment is provided on the front surface 40 of the housing 6 at a position not facing the door 8. The operation unit 10 of the present embodiment is constituted by a liquid crystal display, buttons, dials, and the like.

(Menu display section)

As shown in fig. 2, in the heating cooker 2 of the present embodiment, a plurality of display portions 20, 22, and 24 are provided on the lower wall 16 of the heating chamber 4. These display portions will be described with reference to fig. 4 to 6.

Fig. 4 is a plan view of the lower wall 16 of the heating chamber 4. As shown in fig. 4, the first display unit 20, the second display unit 22, and the third display unit 24 are provided in this order from the rear side Y1 of the heating chamber 4 to the front side Y2.

The first display unit 20 is a guide display unit for guiding the location where the object is to be heated. The second display unit 22 is a caution display unit that displays a caution concerning the use of the heating cooker 2. The third display unit 24 is a menu display unit for displaying a cooking menu.

In particular, by describing the third display unit 24 in the lower wall 16 of the heating chamber 4, the user can view the cooking menu with the door 8 opened. Since the operation unit 10 (fig. 1 and 2) is provided at a position not facing the door 8, the user can select a cooking menu by operating the operation unit 10 while viewing the cooking menu on the basis of the third display unit 24 in a state where the door 8 is opened.

As shown in fig. 4, the third display portion 24 is provided on the front side Y2 of the heating chamber 4 with respect to the first display portion 20 located at the center of the lower wall 16 of the heating chamber 4. In particular, the third display unit 24 is provided at a position closer to the front side Y2 of the heating chamber 4 than the first display unit 20 and the second display unit 22, which are different display units from the third display unit 24. According to such a configuration, the menu display becomes easier to observe, and the convenience of the user can be further improved.

In the present embodiment, an in-box lamp (not shown) for irradiating the heating chamber 4 is provided. The interior lamp of the present embodiment is provided on the side wall 12A or the side wall 12B, and is inclined so as to irradiate the lower wall 16 of the heating chamber 4. The in-box lamp of the present embodiment is controlled by a control unit (not shown) so as to be automatically turned on when the door 8 is opened. According to such a configuration, when the door 8 is opened, the in-box lamp is automatically turned on, so that the third display portion 24 can be easily observed, and menu selection can be easily performed even in a dark place.

Next, fig. 5 shows a partially enlarged view of the third display unit 24. As shown in fig. 5, the third display portion 24 has a menu name 32 and a symbol 34. The menu name 32 is the name of the cooking menu. The symbol 34 is a symbol corresponding to each cooking menu. Reference numeral 34 in the present embodiment is a number corresponding to each cooking menu. The third display unit 24 is configured by collectively describing menu names 32 and symbols 34. With this configuration, the user can easily select the cooking menu.

Next, the front surface 26 of the door 8 is shown in fig. 6. Fig. 6 is a front view of the door 8. As shown in fig. 6, the front surface 26 of the door 8 includes a transparent portion 28 and a nontransparent portion 30. The transparent portion 28 is a portion made of a transparent material, and the non-transparent portion 30 is a portion coated with a non-transparent material. The user can visually confirm the inside of the heating chamber 4 through the transparent portion 28. The opaque portion 30 forms an outer frame of the front surface 26 of the door 8.

As shown in fig. 6, the transparent portion 28 is not provided with a display portion such as characters and symbols. In the conventional heating cooker, the menu display portion may be printed on the transparent portion 28, but in the heating cooker 2 of the present embodiment, the third display portion 24 is provided on the lower wall 16 of the heating chamber 4, and therefore the menu display portion is not provided on the transparent portion 28. This can enlarge the visual confirmation area of the transparent portion 28, and improve the visual confirmation of the inside of the heating chamber 4 through the transparent portion 28. Further, the design of the door 8 can be improved.

As described above, the heating cooker 2 of the embodiment includes: a casing 6 forming a heating chamber 4 for accommodating an object to be heated; a door 8 that opens and closes the heating chamber 4; and an operation portion 10 provided at a position not opposed to the door 8 on the front surface 40 of the housing 6. In such a configuration, the third display unit 24 as a menu display unit is provided on the lower wall 16 as the bottom surface of the heating chamber 4.

By providing the menu display portion on the bottom surface of the heating chamber 4 in this manner, the user can select a cooking menu by operating the operation portion 10 while viewing the menu display portion with the door 8 opened. Therefore, the convenience of the user can be improved. Further, since it is not necessary to print a menu display portion on the front surface 26 of the door 8 as in the conventional art, it is possible to improve the visibility of the inside of the heating chamber 4 through the door 8 and also improve the design of the door 8.

(gasket)

Returning to fig. 1, a gasket 38 is provided on the back surface 36 of the door 8. The gasket 38 used in the heating cooker 2 of the present embodiment will be described with reference to fig. 7 to 9C.

Fig. 7 is a rear view of the door 8 showing the back 36 of the door 8. The gasket 38 shown in fig. 7 is a sealing member attached to the back surface 36 of the door 8, and seals between the door 8 and the housing 6. In a state where the heating chamber 4 is closed by the door 8, that is, in a closed state of the door 8, when the back surface 36 of the door 8 faces the front surface 40 of the casing 6, the gap between the both surfaces is sealed by the gasket 38. This prevents steam and the like generated in the heating chamber 4 from leaking to the outside of the heating cooker 2.

As shown in fig. 7, the gasket 38 of the present embodiment is an annular member continuous along the outer frame of the door 8.

Fig. 8 shows a cross-sectional view a-a of fig. 7. Fig. 8 shows a state in which the door 8 is opened, that is, an opened state of the door 8. In fig. 8, a direction from the bottom to the top along the paper surface indicates a front-to-rear direction of the door 8, a lower surface of the door 8 in fig. 8 indicates the front surface 26, and an upper surface of the door 8 in fig. 8 indicates the rear surface 36. The front face 26 corresponds to the outer side of the door 8 and the back face 36 corresponds to the inner side of the door 8.

As shown in fig. 8, the rear surface 36 of the door 8 is constituted by a door body 41 and a choke cover 42.

The door main body portion 41 is a main body portion of the door 8, and is made of metal. The door body 41 is provided with an annular groove on the outer periphery to form a choke structure 44. The choke structure 44 is a structure for preventing microwave from passing therethrough, and a plurality of comb-shaped metal plates are arranged.

The choke cover 42 is a cover member that covers the choke structure 44 formed in a ring shape. The choke cover 42 is attached to the door main body portion 41 at a position covering the choke structure 44.

A groove 46 is formed between the door body 41 and the choke cover 42. A gasket 38 is mounted in the groove 46. The gasket 38 attached to the groove 46 seals between the door body 41 and the choke cover 42. The gasket 38 protrudes in the direction C away from the door 8 and is configured to be able to contact the front surface 40 of the housing 6.

The detailed structure of the gasket 38 will be described with reference to fig. 9A to 9C. Fig. 9A to 9C are sectional views showing different states of the gasket 38. Fig. 9A corresponds to the opened state of the door 8, and fig. 9B and 9C correspond to the closed state of the door 8. Fig. 9B shows a state during closing of the door 8, and fig. 9C shows a state after closing of the door 8.

As shown in fig. 9A, the gasket 38 includes a mounting portion 48, a first rising portion 50, and a second rising portion 52.

The mounting portion 48 is a portion for mounting the gasket 38 to the door 8. The mounting portion 48 of the present embodiment is fitted to the end of the choke cover 42.

The first rising portion 50 and the second rising portion 52 are both portions rising from the mounting portion 48. The first rising portion 50 and the second rising portion 52 rise in the C direction, which is a direction away from the door 8.

The first rising portion 50 is a portion rising from the first position P1 of the mounting portion 48. The first rising portion 50 faces the opposing wall 54 of the door main body 41. The opposing wall 54 is a portion that is curved halfway in the door main body 41 so as to enter the inside of the door 8.

The first rising portion 50 has a first extending portion 50A and a second extending portion 50B. The first extension 50A is a portion extending from the mounting portion 48, and the second extension 50B is a portion extending obliquely from the first extension 50A.

The first extension portion 50A is disposed at a distance from the opposing wall 54 and extends along the opposing wall 54. That is, the first extension 50A does not contact the opposing wall 54. The second extension portion 50B extends obliquely from the first extension portion 50A toward the opposite wall 54, and ends in contact with the opposite wall 54. With this structure, a gap S1 is formed between the first rising portion 50 and the opposing wall 54.

Similarly, a plurality of projections 56 are formed on the mounting portion 48 at positions facing the facing wall 54. The projection 56 is in contact with the opposing wall 54, and the portion of the mounting portion 48 other than the projection 56 is not in contact with the opposing wall 54. Similarly to the first rising portion 50, a gap S2 is formed between the mounting portion 48 and the opposing wall 54.

The second rising portion 52 is a portion that rises from a second position P2 different from the first position P1 in the mounting portion 48. The second rising portion 52 has a connection portion 52A, a first inclined portion 52B, a second inclined portion 52C, and a bent portion 52D.

The connection portion 52A is a portion standing from the mounting portion 48. The connection portion 52A of the present embodiment stands vertically from the mounting portion 48. The connection portion 52A is connected to the first inclined portion 52B.

The first inclined portion 52B is a portion extending obliquely from the connecting portion 52A. The first inclined portion 52B is inclined in a direction D1, which is a direction approaching the first rising portion 50. The direction D1 in the present embodiment is a direction toward the center of the back surface 36 of the door 8.

The second inclined portion 52C is a portion extending obliquely from the first inclined portion 52B. The second inclined portion 52C is inclined in a direction opposite to the first inclined portion 52B, i.e., in a direction D2 which is a direction away from the first rising portion 50. The direction D2 in this embodiment is opposite to the direction D1.

By having the first inclined portion 52B and the second inclined portion 52C, the second standing portion 52 is formed in a shape of "く". A point at which the first inclined portion 52B and the second inclined portion 52C are connected is set as a bending point 53. In the opened state of the door 8 shown in fig. 9A, neither the first inclined portion 52B nor the second inclined portion 52C is in contact with the first standing portion 50. A gap S3 is formed between the first rising portion 50 and the second rising portion 52. The gap S3 is a bag-like space that is not closed but exposed to the outside in the open state of the door 8.

As shown by the broken line in fig. 9A, when the first rising portion 50 and the second rising portion 52 are projected perpendicularly to the door 8, the respective rising portions 50 and 52 partially overlap each other.

The bent portion 52D is a portion bent inward from the second inclined portion 52C. By providing such a bent portion 52D, the second rising portion 52 can be prevented from rising excessively in the C direction away from the door 8.

As shown in fig. 9B, when the door 8 is closed with respect to the housing 6, the second rising portion 52 of the gasket 38 is in contact with the front surface 40 of the housing 6. The second rising portion 52 is compressed and bent by being pressed by the front surface 40 of the housing 6. As described above, since the second rising portion 52 is formed in the shape of "く", the first inclined portion 52B and the second inclined portion 52C are bent in a direction to approach each other, and the bending point 53 is moved in a direction to approach the first rising portion 50. Therefore, as shown in fig. 9B, the first inclined portion 52B contacts the first rising portion 50, and the gap S3 is closed.

As described above, in the open state of the door 8, the second rising portion 52 does not contact the first rising portion 50, and in the closed state of the door 8, the second rising portion 52 contacts the first rising portion 50, and the gap S3 is closed. Accordingly, the repulsive force generated by the gasket 38 is weak at a stage before the second rising portion 52 comes into contact with the first rising portion 50, whereas the repulsive force is strong at a stage after the contact. In this way, the stepwise cushioning property by the gasket 38 can be exhibited.

Although the gap S3 is closed, the first rising portion 50 and the second rising portion 52 are not integral members, and therefore the closing property of the gap S3 is weak. Therefore, even after the first rising portion 50 comes into contact with the second rising portion 52, the repulsive force by the gasket 38 does not become excessively strong. This enables the gasket 38 to exhibit a desired cushioning property.

Here, as a comparative example, a structure may be considered in which the first rising portion 50 and the second rising portion 52 are integrally configured, and the gap S3 is always closed to form a hollow portion. However, in the structure of this comparative example, since the hollow portion is a space that is always sealed, the internal pressure of the hollow portion increases due to a temperature rise, and the repulsive force of the gasket 38 may become excessively strong. The method for manufacturing the gasket 38 to form the hollow portion is limited to extrusion molding, and cannot be manufactured by other manufacturing methods. In contrast, in the gasket 38 of the present embodiment, the gap S3 is not a gap that is closed all the time, and therefore the repulsive force of the gasket 38 can be prevented from becoming excessively strong. Further, since the gasket 38 does not need to be formed with a hollow portion, the gasket 38 can be produced by other methods such as press working and injection molding, as well as extrusion molding.

Further, as shown in fig. 9A, since there is a region where the first rising portion 50 and the second rising portion 52 partially overlap when projected perpendicularly to the door 8, the second rising portion 52 can be brought into contact with the first rising portion 50 more reliably as shown in fig. 9B.

When the compression of the gasket 38 is further advanced from the state shown in fig. 9B, the first rising portion 50 is pressed by the second rising portion 52 and moves in the direction D1 toward the opposing wall 54 as shown in fig. 9C. As described above, the gap S1 is formed between the first rising portion 50 and the opposing wall 54, and the gap S1 becomes smaller as the first rising portion 50 moves. By providing such a gap S1, the first rising portion 50 can absorb the compressive force generated by the second rising portion 52 being pressed by the case 6. This makes it possible to smooth the increase in the repulsive force of the gasket 38, and to cause the gasket 38 to exhibit a desired cushion function.

Further, since the second rising portion 52 of the present embodiment includes the connecting portion 52A, the compression force generated when the second rising portion 52 is pressed by the case 6 can be further absorbed.

In the state shown in fig. 9C, the space between the casing 6 and the door 8 is sealed by the gasket 38, and the steam and the like in the heating chamber 4 are prevented from leaking to the outside.

As described above, the heating cooker 2 of the embodiment includes: a casing 6 forming a heating chamber 4 for accommodating an object to be heated; a door 8 that opens and closes the heating chamber 4; and a gasket 38. The gasket 38 is mounted on the door 8 and is an elastic material that seals between the door 8 in the closed state and a front surface 40 of the housing 6 facing the door 8. The gasket 38 includes a mounting portion 48 mounted to the rear surface 36, which is the inner surface of the door 8, a first rising portion 50, and a second rising portion 52. The first rising portion 50 and the second rising portion 52 are portions rising from the first position P1 and the second position P2 apart from each other in the mounting portion 48 in the C direction away from the door 8, respectively. The second rising portion 52 has a first inclined portion 52B and a second inclined portion 52C. The first inclined portion 52B is inclined in a direction D1 toward the first rising portion 50, and the second inclined portion 52C extends from the first inclined portion 52B and is inclined in a direction D2 away from the first rising portion 50. In the closed state of the door 8, the second rising portion 52 is pressed by the front surface 40 of the housing 6 and contacts the first rising portion 50.

With this configuration, the second rising portion 52 does not contact the first rising portion 50 in the open state of the door 8, and contacts the first rising portion 50 in the closed state of the door 8. This enables the gasket 38 to exhibit a desired cushioning function.

In the heating cooker 2 according to the embodiment, the door 8 includes the door body 41 and the choke cover 42. The door main body portion 41 is a member forming a choke structure 44 for preventing leakage of microwaves. The choke cover 42 is a member attached to the door main body 41 so as to cover the annular groove of the choke structure 44. The gasket 38 is disposed in a groove 46 between the door body 41 and the choke cover 42. According to such a configuration, the choke structure 44 can prevent the leakage of the microwave, and the gasket 38 can be disposed in the groove 46 between the choke cover 42 and the door main body 41 to exhibit the sealing property.

In the above description, the case where the cross-sectional shapes of the first inclined portion 52B and the second inclined portion 52C of the second standing portion 52 extend linearly has been described, but the present invention is not limited to this case. For example, as shown in fig. 10 and 11, the cross-sectional shape of the second inclined portion 58 may be curved. As shown in fig. 11, the curved portion 59 may be curved.

(adhesive part)

Next, the adhesive portions 21A and 21B and the support wall 17 shown in fig. 3 will be described with reference to fig. 12 to 16.

Fig. 12 is a sectional view including the side walls 12A, 12B, the lower wall 16, and the support wall 17. Fig. 13 is a plan view of the support wall 17 on which the lower wall 16 is placed.

As shown in fig. 12, the support wall 17 includes a first wall 60, a second wall 62, and a bottom wall 64.

The first wall portion 60 is a portion constituting the left and right end portions of the support wall 17. The first wall portion 60 supports the side walls 12A, 12B from below. The second wall portion 62 is a portion recessed downward from the first wall portion 60 inside the first wall portion 60. The second wall portion 62 supports the lower wall 16 from below. The bottom wall 64 is a portion recessed further downward inside the second wall 62. A power supply chamber 19 is formed between the bottom wall 64 and the lower wall 16.

The feeding chamber 19 is a space in which an antenna (not shown) or the like for radiating microwaves to the heating chamber 4 and stirring the microwaves is provided. The lower wall 16 is a partition member that vertically partitions the power supply chamber 19 and the heating chamber 4.

As shown in fig. 12, the left and right side walls 12A, 12B and the lower wall 16 of the present embodiment are provided at an interval X1 in the X direction, which is the left-right direction. Adhesive portions 21A, 21B are provided between the side walls 12A, 12B and the lower wall 16.

The bonding portions 21A and 21B are members for bonding the lower wall 16 and the support wall 17. The adhesive portions 21A and 21B are made of an adhesive such as silicone rubber.

A method of applying the adhesive portions 21A and 21B will be described with reference to fig. 14A, 14B, and 14C. Fig. 14A, 14B, and 14C are enlarged sectional views of the periphery of the left adhesive portion 21A when the heating chamber 4 is viewed from the front.

As shown in fig. 14A, first, lower wall 16 is placed on support wall 17. Specifically, the lower wall 16 is placed on the second wall portion 62 of the support wall 17.

Next, the adhesive portion 21A is applied. Specifically, as shown in fig. 14B, the adhesive portion 21A is applied so as to fill the gap between the outer peripheral edge 27 of the lower wall 16 and the support wall 17. Fig. 14B corresponds to fig. 13.

At this time, the coating is performed such that the end 66 on the side of the adhesive portion 21A is positioned on the upper surface of the lower wall 16. At the same time, the other end 67 of the adhesive portion 21A is applied so as to reach a predetermined position of the first wall portion 60 of the support wall 17. On the surface of the first wall portion 60, 2 guide lines 68A, 68B for guiding the position of the tip end 67 of the adhesive portion 21A are drawn. When the adhesive portion 21A is applied to the first wall portion 60, the adhesive portion 21A can be applied to a predetermined position by controlling the application amount so that the tip 67 of the adhesive portion 21A is positioned between the 2 guide lines 68A, 68B.

As shown in fig. 14B, the lateral width of the adhesive portion 21A is a width W1.

Next, the side wall 12A is joined to the support wall 17. Specifically, as shown in fig. 14C, the side wall 12A is placed on and joined to the first wall portion 60 of the support wall 17. In this embodiment, the side wall 12A is mechanically joined to the support wall 17 using a protruding flange aperture 70. Specifically, a screw is inserted into the protruding flange hole 70 and screwed. Not limited to the screw joining, any joining method such as caulking, welding, or the like may be employed.

As shown in fig. 14C, a gap 72 is formed between the side wall 12A and the first wall portion 60. The guide lines 68A and 68B are set in advance so that the adhesive portion 21A reaches the gap 72 between the side wall 12A and the first wall 60. Therefore, as shown in fig. 14C, the gap 72 is filled and sealed with the adhesive portion 21A.

By sealing the gap 72 with the adhesive portion 21A in this way, the joining of the side wall 12A and the first wall portion 60 can be strengthened. While steam or the like is generated in the heating chamber 4 during operation of the heating cooker 2, such steam or the like can be prevented from leaking to the outside of the heating chamber 4 through the gap 72. Internal components (not shown) such as a motor and a control circuit are disposed below the support wall 17, and if water droplets of steam adhere to such internal components, a failure may occur. Therefore, by sealing the gap 72, water droplets are prevented from adhering to the internal components via the gap 72. This can suppress the failure of the internal components of the heating cooker 2, and can improve the reliability of the heating cooker 2.

In fig. 14A to 14C, the left adhesive portion 21A and the side wall 12A when the heating chamber 4 is viewed from the front are described, but the same application method is applied to the right adhesive portion 21B. Specifically, as shown in fig. 15, while the outer peripheral edge portion 27 of the lower wall 16 is bonded to the support wall 17 by the bonding portion 21B, the bonding portion 21B is applied so that the bonding portion 21B reaches a position where the gap 74 between the side wall 12B and the first wall 60 is filled. This can increase the joining strength between the side wall 12B and the support wall 17 by fastening the screw inserted into the protruding flange hole 76, and can prevent steam or the like from leaking through the gap 74. This can suppress the failure of the internal components of the heating cooker 2, and can improve the reliability of the heating cooker 2.

As shown in fig. 15, the lateral width of the adhesive portion 21B is a width W2.

As described above, in the heating cooker 2 of the present embodiment, the bonding portions 21A, 21B have the regions extending from the outer peripheral edge portion 27 of the lower wall 16 to the gaps 72, 74 between the left and right side walls 12A, 12B and the first wall portion 60 as the first region and the second region on the left and right sides, respectively. This can suppress the failure of the internal components of the heating cooker 2, and can improve the reliability of the heating cooker 2.

Returning to fig. 13, a fourth wall portion 65 is provided at a front portion (i.e., on the front side of the paper) of the support wall 17. The fourth wall portion 65 is a portion provided at a position closest to the door 8, and is formed continuously from the first wall portion 60 described above. Like the first wall portion 60, the fourth wall portion 65 is bonded to the lower wall 16 by a bonding portion.

Fig. 16 is an enlarged cross-sectional view of the periphery of a bonding portion 77 that bonds the fourth wall portion 65 and the lower wall 16. As shown in fig. 16, the bonding portion 77 bonds the outer peripheral edge portion 27 of the lower wall 16 to the support wall 17, and has a width W3 in the lateral direction.

The adhesive portions 21A and 21B correspond to the first region and the second region, while the adhesive portion 77 corresponds to a third region extending in the left-right direction so as to connect the first region and the second region. In the present embodiment, the width W1 of the first region and the width W2 of the second region are both set to be wider than the width W3 of the third region. This can sufficiently secure the lateral width of the adhesive portions 21A and 21B, and can more reliably seal the gaps 72 and 74 between the side walls 12A and 12B and the first wall portion 60.

The invention of the present disclosure has been described above with reference to the above embodiments, but the invention of the present disclosure is not limited to the above embodiments.

The present disclosure has been fully described in connection with the preferred embodiments with reference to the accompanying drawings, but various variations and modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as included within the scope of the present disclosure as defined by the appended claims, unless they depart therefrom. Further, combinations of elements and changes in the order of the elements in the embodiments can be realized without departing from the scope and spirit of the present disclosure.

The present disclosure can be applied to any heating cooker that performs heating cooking on an object to be heated.

Description of the reference symbols

2: a heating cooker; 4: a heating chamber; 6: a housing; 8: a door; 10: an operation section; 12A, 12B: side walls (left and right side walls); 14: an upper wall (top surface); 16: a lower wall (bottom surface); 17: a support wall; 18: inner wall (back); 19: a power supply chamber; 20: a first display unit; 21A, 21B: an adhesive portion; 22: a second display unit; 24: a third display unit (menu display unit); 26: front surface (lateral side); 28: a transparent portion; 30: a non-transparent portion; 32: a menu name; 34: a symbol; 36: a back (medial side); 38: a gasket; 40: a front surface; 41: a door main body portion; 42: a choke cover; 44: a choke structure; 46: a groove; 48: an installation part; 50: a first rising portion; 50A: a first extension portion; 50B: a second extension portion; 52: a second rising portion; 52A: a connecting portion; 52B: a first inclined portion; 52C: a second inclined portion; 52D: a bending section; 53: a bending point; 54: an opposing wall; 56: a protrusion; 58: a second inclined portion; 59: a bending section; 60: a first wall portion; 62: a second wall portion; 64: a bottom wall; 65: a fourth wall portion; 66: a terminal end on one side; 67: the end of the other side; 68A, 68B: a guide wire; 70: a protruding flange aperture; 72: a gap; 74: a gap; 76: a protruding flange aperture; 77: an adhesive portion; p1: a first position; p2: a second position; s1, S2, S3: a gap; w1, W2, W3: a width; x1: spacing; y1: the inner side; y2: the anterior side.

Claims (3)

1. A heating cooker comprising:

a casing forming a heating chamber for accommodating an object to be heated, the casing being formed of a pair of left and right side walls, an upper wall, a lower wall, and a back wall, the left and right side walls and the lower wall being provided with a left and right spacing therebetween;

a support wall having: a first wall portion that supports the left and right side walls from below and is joined to the left and right side walls from below, a second wall portion that is recessed downward inside the first wall portion in a plan view and receives the lower wall, and a bottom wall that is recessed downward inside the second wall portion in a plan view and forms a power feeding chamber between the bottom wall and the lower wall; and

an adhesive portion that adheres an outer peripheral edge portion of the lower wall to the support wall,

the adhesive portion has, as first and second regions, regions extending from the outer peripheral edge of the lower wall to gaps between the left and right side walls and the first wall portion on the left and right sides, respectively.

2. The heating cooker according to claim 1,

the adhesive portion further includes a third region extending in the left-right direction so as to connect the first region and the second region,

the width of the first region and the width of the second region are wider than the width of the third region.

3. The heating cooker according to claim 1 or 2,

a guide line for guiding an application region of the adhesive portion is drawn on a surface of the first wall portion.

Images