JP3365322B2 - Rice cooker lid - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a structure of a lid of a rice cooker used in general households.

[0002]

2. Description of the Related Art Conventionally, the structure of this type of lid is generally shown in FIG.
The configuration is as shown in. The configuration will be described below with reference to the drawings.

In FIG. 8, a pot 41 is detachably housed in a rice cooker body 42. Pan 41 in the rice cooker body 42
A heating coil 47 for inductively heating the pan 41 and a heating substrate 48 for controlling the heating are provided below. The lid 43 covers the upper opening of the rice cooker main body 42 in an openable and closable manner, the lower frame is constituted by the outer lid cover 44, and the heating plate 45 is provided on the lower surface of the pan 41 side.
An annular pot packing 46 having a dogleg-shaped cross section is provided on the outer peripheral side of the heating plate 45, and is in contact with the flange portion of the pot 41.

Inside the lid 43, an operation board 50 having a liquid crystal plate 57 and operation buttons 58, an outer lid 49 constituting the upper surface of the lid 43 to which the operation board 50 is attached, and an operation board 50.
Located below the cover 43 to shield the space where the operation board 50 is attached and other spaces inside the cover 43 in order to prevent the invasion of steam, and the cover 43 is made thinner by screwing the entire circumference on the outer cover 49 instead of screwing. A substrate cover 51 having an outer shape larger than that of the operation substrate 50 heated and welded by 59, a lid IH coil 52 for inductively heating the heating plate 45, and a moisture retaining cap 54 on the upper portion for discharging the steam in the pan 41 to the outside of the rice cooker main body 42. ,
A steam port 55 having a steam plate packing 56 configured to come into contact with the heating plate 45 and the outer lid 43 to seal the heating plate 45 is disposed in the lower portion.

The shape of the outer lid 49 is curved to improve the design, and holes corresponding to the liquid crystal display 57 and the operation buttons 58 are opened for viewing the liquid crystal display and for button operation. On the upper surface of the above, the function display of each operation button is described in addition to covering all the holes, and a large-sized curved film-like display plate 53 conforming to the outer shape of the outer lid 49 is provided so that water does not enter the inside of the lid body 43. Attached with double-sided tape.

[0006]

However, in the above-mentioned conventional structure, when the operation board is not operating properly when the operation of the rice cooker is confirmed in the production factory, the operation board 50 is provided with the outer lid 49 and the board cover 51. Since the outer lid 49 and the substrate cover 51 are set by the welding wire 59 and are welded to each other, the operation substrate 50 cannot be easily removed from the lid body 43. In this case, the assembled lid 43 will be removed from the rice cooker main body 42 and replaced.
To remove the operation substrate 50 determined to be defective from the lid 43, the outer lid 49 attached by welding and the substrate cover 51 are removed by heating and melting the welding wire 59 again, and the outer lid 49 deformed by heating and melting. The substrate cover 51 cannot be reused and will be discarded.

Similarly, at the time of servicing in the market, it is not possible to replace only the operation board 50 due to a malfunction of the operation board 50 or the like, so that the lid 43 is entirely replaced.

Further, in recent years, there has been a demand for miniaturization of rice cookers due to kitchen circumstances, but on the other hand, the display characters have become large and the number of operation buttons has also increased due to improvement of usability and multifunctionality. Operation board 50
Becomes larger, and the film-like display plate 53 becomes the operation board 50.
Similarly, due to the larger size, the sticking work becomes difficult at the time of assembling in the factory, and the sticking failure due to the sticking work, the boss for mounting the operation board 50 on the inner surface of the curved surface, the positioning rib, etc. (not shown). ) Is attached to the outer lid 49 having a sink mark on one side, so it deforms in the use of the rice cooker under steam and severe cold heat conditions,
However, there is a problem that the appearance quality is deteriorated due to the occurrence of floating and the like.

The present invention is intended to solve the above-mentioned problems and provides a curved rice cooker having an electronic part such as an operation board inside, a large display on the top surface, an operation section, and a display plate having a steam port. In the lid body, a large number of operation buttons are arranged on the top surface of the lid body, and further, the welding of the outer lid and the substrate cover is not required, and the malfunction of the operation substrate can be easily and promptly dealt with. The first is to improve the adhesion between the display plate and the outer lid.
The purpose of.

A second object is to improve the coupling force between the outer lid and the display plate and the ease of mounting the display plate in addition to the first object.

A third object is to improve the strength of the outer shell of the display plate by the outer cover and the liquid crystal support plate in addition to the first object.

A fourth object is, in addition to the first object, to improve the strength of the outer shell of the display plate by the outer cover and the display plate.

A fifth object is, in addition to the first object, to improve the strength of the outer shell of the display plate by the display plate alone.

A sixth object is to add the above-mentioned objects 1 to 5,
The lid IH coil structure is used to make the lid thin.

[0015]

In order to achieve the first object, the present invention provides a rice cooker main body, a pot detachably accommodated in the rice cooker main body, and an upper opening of the rice cooker main body. A cover body which is openably and closably coverable and has an operation section above, and a recess having a lead wire lead-out port on the rear side provided with the cover body on the upper surface; and a liquid crystal plate housed in the recess.
An operation board having a horseshoe shape having a plurality of operation buttons, a lead wire communicating with a heating device, and the like, and an engaging portion for the lead wire provided on the rear side of the horseshoe shape, and an upper surface of the operation board outside the lid. A large display plate fixed to the lid body by adhesion with a double-sided tape in a shape that individually surrounds the entire circumference of the concave portion that houses the plurality of engaging claws and the operation board and the entire circumference of the engaging claw, A steam port that discharges steam inside the pan and a board cover that closes the lead wire outlet of the recess are provided behind the operation board and approximately in the center of the display board, and further behind the horseshoe-shaped back of the operation board. is there.

In order to achieve the above-mentioned second object, the present invention provides an engaging pawl near the steam port and with the hooking side facing the steam port.

In order to achieve the third object, according to the present invention, a supporting rib for supporting the operation substrate is provided at about the center of the recess of the lid and in the vicinity of the operation button, and the liquid crystal support plate for supporting the liquid crystal plate is used. Proximity bosses that are close to the operation board and the display board are provided at the relative positions of the support ribs.

In order to achieve the above-mentioned fourth object, the present invention provides a supporting rib for supporting the operation board from approximately the center of the recess of the lid and the vicinity of the operation button, and the relative position of the support rib on the lower surface of the display plate. In addition, a proximity rib that is close to the operation substrate is provided.

In order to achieve the fifth object, the present invention is to provide a grid-like rib around the operation button arrangement portion on the lower surface of the display plate.

In order to achieve the sixth object, the present invention provides
A lid IH coil for heating the heating plate is provided below the concave surface.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a rice cooker main body, a pan detachably accommodated in the rice cooker main body, an upper opening portion of the rice cooker main body which is openably and closably covered, and an operating portion is provided above. And a recess having a rear lead wire outlet provided on the upper surface of the cover, a liquid crystal plate housed in the recess, a plurality of operation buttons, a lead wire communicating with a heating device, and the like. An operation board having a horseshoe shape and having an engaging portion for engaging with the lead wire provided in the rear of the horseshoe shape, and a plurality of engaging claws and an operation board are housed on the upper surface of the operation board from outside the lid. A large display plate fixed to the lid by adhesion with double-sided tape that individually surrounds the entire circumference of the recess and the entire circumference of the engaging claw, and a pan inside the operation board and approximately in the center of the display board. Steam port that discharges the steam of the By providing a board cover that closes the opening further behind the horseshoe-shaped rear side of the operation board, it is possible to attach a large operation board from the top surface of the lid, and it is necessary to weld the outer lid and the board cover with a welding wire. Since the welding wire is removed, the cost can be reduced, and since the display board is the outermost part, it can be installed after checking the operation of the rice cooker, so when the operation board malfunctions, it does not disassemble at all and the lid top Since only the operation board can be removed, the production loss cost can be reduced, and the sink mark on the outer lid can be eliminated and the double-sided tape can be used to prevent the intrusion of water from the outside by surrounding the recess and the engaging claw. .

According to the second aspect of the present invention, the engaging claw is provided near the steam port and with the claw hooking side facing the steam port.
The mounting position of the display plate can be established with the engaging claws centering on the steam port of the lid, and because the fitting is done by the claws, the display plate floats or peels off due to the decrease in the adhesive strength of the double-sided tape due to steam or heat. Does not occur.

According to a third aspect of the present invention, a supporting rib for supporting the operation substrate is provided at approximately the center of the concave portion of the lid and in the vicinity of the operation button, and the liquid crystal supporting plate for supporting the liquid crystal plate is provided at a position relative to the supporting rib. By providing the proximity boss that is close to the operation substrate and the display plate, the strength of the display plate that also serves as the outer shell of the lid can be improved by the outer lid and the liquid crystal support plate.

According to a fourth aspect of the present invention, a supporting rib for supporting the operation board is provided near the center of the recess of the lid and in the vicinity of the operation button. Further, the relative position of the support rib on the lower surface of the display plate is close to the operation board. By providing the proximity ribs, the strength of the display plate that also serves as the outer shell of the lid can be improved by the outer lid and the display plate.

According to the fifth aspect of the present invention, by providing the grid-like ribs around the operation button arrangement portion on the lower surface of the display plate, it is possible to improve the strength of the display plate which also serves as the outer shell of the lid body by the display plate alone. it can.

According to the sixth aspect of the present invention, the lid IH coil for causing the heating plate to generate heat is arranged below the recessed surface in the lid body, thereby reducing the temperature rise in the lid body space and reducing the thickness of the lid body. You can

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

1 to 7, the pot 1 is the rice cooker body 2
It is stored detachably in. Below the pot 1 in the rice cooker body 2, a heating coil 7 for inductively heating the pot 1 and a heating substrate 8 for controlling heating are provided. The lid 3 covers the upper opening of the rice cooker body 2 in an openable and closable manner, the lower frame is constituted by the outer lid cover 4, and the heating plate 5 is provided on the lower surface of the pan 1 side. An annular pot packing 6 with a V-shaped cross section
Is provided and is in contact with the flange portion of the pan 1. The lid 3 has a curved shape for design and thinning, and has a thick central portion and a thinner outer edge. The upper frame of the lid 3 is
A horseshoe provided with a vapor port 15 having a moisturizing cap 14 in the approximate center for discharging vapor to the outside of the main body, a liquid crystal plate 17 in the front supported by a liquid crystal support plate 20, an operation button 18, and a lead wire in the rear. An outlet 2 for accommodating the shaped operation board 10 and for wiring the lead wire 25 in a concave shape with a bottom
The outer lid 9 forms the concave portion 22 provided with 1.

By providing the outer lid 9 constituting the upper surface of the lid body 3 with the concave portion 22 for accommodating the operation substrate 10, the operation substrate 10 can be attached and detached from the outside of the lid body 3, and further to the curved surface. By matching the curved surfaces, the rigidity of the outer lid 9 is improved. Further, by making the shape of the operation board 10 similar to the outer edge shape of the outer lid 9 and further forming a horseshoe shape in which the vicinity of the steam port 15 is depressed, the steam port 15 is covered.
It is possible to arrange the buttons approximately in the center, and to arrange the operation buttons 18 in a well-balanced manner, and further to arrange the buttons in the front for easy use.

The heating plate 5 is induction-heated on the upper surface of the outer lid cover 4, and the annular lid IH coil 12 which can be attached by being able to dispose the steam port 15 in the approximate center of the lid body 3 as described above. I have it. By using the lid IH coil 12 that does not self-heat by induction heating the heating plate, the temperature rise in the lid body is reduced unlike the heater type heating system, and it is not necessary to provide a heat shield plate or a heat shield space. The thickness of can be reduced. The steam port 15 is provided with a steam plate packing 16 configured to come into contact with and seal the heating plate 5 and the outer lid 3, and the outlet port 21 is a space inside the recess in which the operation substrate 10 is attached inside the lid body 3. A substrate cover 11 is provided to shield the space inside the other lid 3. The vapor plate packing 1 is temporarily provided by shielding with the substrate cover 11.
Even if the seal of 6 is not maintained, the vapor does not reach the operation substrate 10, and the vapor does not damage the operation substrate 10 or cause a malfunction, so that safety can be ensured.

The recess 22 of the outer lid 9 for accommodating the operation board 10
On the upper surface of the display panel 13, which is an outer surface made of a resin material formed by laminating a film on the surface of which the functions of the operation buttons 18 are adhered, and the claw hook side is provided around the six steam ports 15 with the steam ports The watertightness is formed by surrounding the engaging claw 23a disposed on the 15 side, the engaging claw 23b disposed on the outer edge of the display plate 13, and the entire circumference of the recess 22 and the entire circumference of the engaging claw 23b. It is tightly fixed to the outer lid 9 by adhesion with the double-sided tape 24. By making the double-sided tape 24 individually surround the engaging claws 23a and 23b and the recess 22, it is possible to prevent water from entering the lid 3 from the outside. Further, the thickness of the display plate 13 is about 2 mm, and the upper surface of the operation button 18 is a film-only surface 19 without a resin surface because the button operation instruction is transmitted. By providing the grid-like ribs 30 that reinforce the surface, the strength of the display plate 13, which also serves as the outer shell of the outer lid 3, against deformation and bending due to external stress is improved.

Further, the display plate 13 and the liquid crystal plate 17 are close to each other, and between the two parts, the liquid crystal plate packing 2 which is elastic and waterproof and which surrounds the outer periphery of the upper surface of the liquid crystal plate 17 and contacts the display plate 13 is provided.
6 is sealed and the space on the upper surface of the liquid crystal plate 17 is filled with another recess 2
By separating from the inner space of 2, the influence of the temperature change of the lid 3 caused by the heat generated during rice cooking can be mitigated, and the dew condensation on the inner surface of the display plate 13 can be prevented.

A viscous, heat-resistant and vapor-resistant rubber member 27 is provided between the outlet 21 and the substrate cover 11 to provide the outer lid 9, the substrate cover 11 and the lead wire 25.
Although the space is hermetically sealed, the substrate cover 11
Since the operation board 10 and the rubber member 27 do not overlap with each other by providing the rear side of the operation board 10, the thickness of the lid 3 can be reduced.

In the concave portion 22 of the outer lid 9, a supporting rib 28 is provided in the vicinity of the operation button 18 of the operation board 10 and where no board component is provided, and a slight amount (about 0.5 mm) is provided on the lower surface of the operation board 10. It is provided with a gap. Further, on the liquid crystal support plate 20, the display plate 13 and the operation substrate 1 are provided at positions facing the support ribs 28 so as to sandwich the operation substrate 10.
By configuring the proximity boss 29a with a slight gap similarly to 0, the operation button 1 with the excessively large display plate 13 is formed.
When the support rib 28 receives deformation of the display plate 13 due to an external force via the proximity boss 29a and the operation substrate 10, the operation button 18 is protected and the display plate 13 is deformed when the display plate 13 is deformed by the operation force of 8. Can be prevented.

Similarly, as a means for protecting the operation buttons 18 and preventing the deformation of the display plate 13, the boss is used as the display plate 1.
3 is provided on the inner surface is the proximity boss 29b. The proximity boss b is extended from the inner surface of the display plate 13 to the operation board 10, and the effect of the proximity boss 29a can be obtained by the display plate 13 itself.

[0036]

As described above, according to the invention of claim 1, the rice cooker main body, the pan detachably accommodated in the rice cooker main body, and the top opening of the rice cooker main body can be opened and closed. A lid having an operation section above the cover, the lid having a lead wire outlet in the rear provided on the upper surface, a liquid crystal plate housed in the depression, a plurality of operation buttons, and a heating device. An operation board having a horseshoe shape having connecting lead wires and the like, and the lead wire engaging portion provided on the rear side of the horseshoe shape, and a plurality of engaging claws and an operation board on the upper surface of the operation board from outside the lid. A large display plate fixed to the lid by adhesion with a double-sided tape in a shape that individually surrounds the entire circumference of the recess for accommodating and the entire circumference of the engagement claw, and behind the operation board and approximately in the center of the display board. Steam port for discharging steam in the pan and By providing a board cover that closes the lead wire outlet further behind the horseshoe-shaped rear of the operation board, a large operation board can be attached from the top of the lid, and the outer lid and the board cover are welded by welding wires. Since it is not necessary, cost can be reduced by removing the welding wire.Because the display board is the outermost part, it can be installed after checking the operation of the rice cooker, so if the operation board malfunctions, the lid body does not disassemble at all. By removing only the operation board from the top surface, it is possible to reduce manufacturing loss costs, and to prevent sinking of the outer lid and to prevent water from entering from the outside by surrounding the recess and engaging claws with double-sided tape. be able to.

According to the second aspect of the present invention, the engaging claw is provided in the vicinity of the steam port, and the claw hooking side is directed toward the steam port, so that the display plate is attached with the steam port of the lid as the center. The position can be established by the engaging claws, and since the fitting is performed by the claws, the floating or peeling of the display plate due to the decrease in the adhesive force of the double-sided tape due to steam or heat does not occur.

According to the third aspect of the present invention, a supporting rib for supporting the operation substrate is provided near the center of the concave portion of the lid and in the vicinity of the operation button, and the supporting rib is formed by the liquid crystal supporting plate supporting the liquid crystal plate. By providing the proximity boss that is close to the operation substrate and the display plate at the relative position of, the strength of the display plate, which also serves as the outer shell of the lid, can be improved by the outer lid and the liquid crystal support plate.

According to the fourth aspect of the present invention, a support rib for supporting the operation substrate is provided at approximately the center of the recess of the lid and in the vicinity of the operation button, and the operation is performed at the relative position of the support rib on the lower surface of the display plate. By providing the proximity rib adjacent to the substrate, the strength of the display plate that also serves as the outer shell of the lid can be improved by the outer lid and the display plate.

Further, according to the invention of claim 5, by providing a grid-like rib around the operation button disposition portion on the lower surface of the display plate, the strength of the display plate also serving as the outer shell of the lid can be achieved by the display plate alone. Can be improved.

According to the sixth aspect of the present invention, the lid IH coil for heating the heating plate is disposed below the recessed surface in the lid body, so that the temperature rise in the lid body space is reduced and the lid body is formed. It can be thin.

[Brief description of drawings]

FIG. 1 is a cutaway sectional view of a rice cooker showing an embodiment of the present invention.

FIG. 2 is a sectional view of the main part around the lid of the rice cooker.

[Fig. 3] Same as above, an external view of the lid of the rice cooker before the display plate is attached.

FIG. 4 is a bottom view of the display panel of the lid of the rice cooker.

[Fig. 5] Same as above, external view of rice cooker

FIG. 6 is a sectional view of another main part around the lid of the rice cooker.

FIG. 7 is a sectional view of another main part around the lid of the rice cooker.

FIG. 8 is a cutaway sectional view of a rice cooker showing a conventional example.

[Explanation of symbols]

1 pot 2 rice cooker body 3 lid 5 heating plate 10 Operation board 11 board cover 12 Lid IH coil 13 Display board 15 Steam port 17 LCD plate 18 Operation board 20 LCD support plate 21 outlet 22 recess 23a Engaging claw a 23b Engaging claw b 24 double-sided tape 25 lead wire 28 Support ribs 29a Proximity boss a 29b Proximity boss b 30 grid ribs

Front page continued (72) Inventor Kazunori Kono 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Masaaki Shibata, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. 72) Inventor Masahiro Koyama 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) Reference JP-A-7-265197 (JP, A) JP-A-3-47210 (JP, A) JP 5-309034 (JP, A) JP 9-108098 (JP, A) JP 6-105740 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47J 27 / 00

Claims (6)

(57) [Claims] 1. A rice cooker body, a pan detachably housed in the rice cooker body, and a lid body which covers an upper opening of the rice cooker body so as to be openable and closable and has an operation portion above the lid. A horseshoe-shaped lead wire having a concave portion provided on the upper surface of the body and having a lead wire outlet in the rear, a liquid crystal plate accommodated in the concave portion, a plurality of operation buttons, a lead wire communicating with a heating device, and the like; The operating board having the horseshoe-shaped rearward engaging portion of the operating board, a plurality of engaging claws from the outside of the lid on the upper surface of the operating board, and the entire circumference of the recess for accommodating the operating board and the entire engaging claw. A large display plate fixed to the lid by adhesion with a double-sided tape in a shape that individually surrounds the circumference, a steam port for discharging steam in the pan behind the operation board and approximately in the center of the display board, Use the board cover that closes the lead wire outlet of the recess A lid of a rice cooker that is provided further rearward than the horseshoe-shaped rear of the plate. 2. The lid of the rice cooker according to claim 1, wherein the engaging claw is provided in the vicinity of the steam port and with the claw hooking side facing the steam port. 3. A support rib for supporting the operation board is provided near the center of the concave portion of the lid and in the vicinity of the operation button, and the operation board and the display board are located at a relative position of the support rib with respect to the liquid crystal support plate for supporting the liquid crystal plate. The lid body of the rice cooker according to claim 1, wherein a proximity boss is provided adjacent to the lid. 4. A support rib for supporting the operation board is provided near the center of the lid recess and near the operation button, and a proximity rib is provided on the lower surface of the display plate in a position relative to the support rib so as to be close to the operation board. The lid of the rice cooker according to claim 1. 5. The lid of the rice cooker according to claim 1, wherein a grid-like rib is provided around the operation button arrangement portion on the lower surface of the display plate. 6. The lid body of the rice cooker according to claim 1, wherein a lid IH coil for causing the heating plate to generate heat is provided in the lid body below the concave surface.