JP2556509Y2 - Rice cooker lid ring set - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid ring set incorporated in a rice cooker lid set.

[0002]

2. Description of the Related Art A lid set of a rice cooker has a lid ring attached to an inner peripheral surface of an outer lid, and a heat radiating plate having a heat retaining heater mounted on an upper surface is attached to the center of the lid ring.
A lid packing that seals the outer peripheral flange of the pot is attached to the inner peripheral edge of the lid ring.

As shown in FIG. 5, the lid ring, the radiator plate, and the lid packing secure the radiator plate 2 with screws 3 on the lower surface of the inner peripheral portion of the lid ring 1 and the outer peripheral edge of the radiator plate 2. The lid packing 4 is sandwiched between the lid ring 1 and the lid ring 1.

[0004]

[Problems to be solved by the invention] In the above configuration,
In order to stably fix the heat radiating plate 2 and the lid packing 4 to the lid ring 1, it is necessary to use at least six screws to secure the whole.

For this reason, there is a problem that the work of assembling the heat radiating plate 2 and the cover packing 4 to the cover ring 1 is inefficient, and the number of screws 3 increases, which is one factor that hinders a reduction in product cost. Was.

Therefore, the present invention aims to increase the efficiency of assembling the heat sink and the lid packing to the lid ring,
It is an object to reduce costs.

[0007]

In order to solve the above-mentioned problems, the present invention provides a lid ring set comprising a combination of a lid ring, a radiator plate and a ring-shaped lid packing. A packing receiving portion having a required width, and a plurality of engaging rails are provided at regular intervals in the circumferential direction along the outside of the packing receiving portion, and the engaging rails stand upright from the packing receiving portion. A wall and an inward wall provided at the upper end of the upright wall are formed in an inverted L-shaped section, and the number of the engagement rails is equal to the number of the engagement rails on the periphery of the heat sink, and the distance between the engagement rails is An engaging projection having a length fitting into the outer periphery of the lid packing is provided, an outward flange-shaped mounting portion is provided on the lid packing, the lid packing is provided on an inner peripheral side of the lid ring, and the heat radiation plate is provided on the lid packing. On the inner peripheral side of By contacting a part of the engaging protrusion to the lower surface of the inward wall of the engaging rail, the mounting portion of the lid packing and the engaging protrusion of the heat sink are moved between the packing receiving portion and the inward wall. It is configured to be sandwiched between.

[0008]

In order to assemble the lid ring set having the above structure, the mounting portion of the lid packing is fitted to the packing receiving portion of the lid ring, and the engaging projection of the heat sink is positioned at a space between the engaging rails of the lid ring. Then, the heat radiating plate is rotated to one side, and the engaging projection is fitted into the engaging rail from the open end thereof.

Then, inside the engagement rail,
When the rib of the engaging projection of the heat sink hits the lower surface of the inward wall of the engaging rail, the engaging portion and the mounting portion of the lid packing are in contact with the inward wall of the engaging rail and the packing receiving portion of the lid ring. The lid ring, the radiator plate and the lid packing are integrated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a lid ring set according to an embodiment comprises a combination of a lid ring 10, a radiator plate 11, and a lid packing 12.

On the upper surface of the cover ring 10, a packing receiving portion 13 having a constant width is provided along the inner periphery thereof over the entire circumference. An engagement rail 14 is provided outside the packing receiving portion 13.
Are provided at six locations at regular intervals in the circumferential direction. As shown in FIG. 2, the engagement rail 14
The upright wall 14a has an inverted L-shaped cross section in which an inward wall 14b is formed at the upper end of the wall 14a. In addition, one end surface of the one engagement rail 14 (that is, the end surface opposite to the end surface of the heat sink 11 into which the engagement protrusion 22 is fitted) is closed by the stopper wall 15.

The lid packing 12 is ring-shaped, and has a flange-shaped mounting portion 16 formed outward at the upper end and a lip portion 17 having a U-shaped cross section at the lower end.

At the center of the lower surface of the mounting portion 16, FIG.
The rib 18 is formed over the entire circumference as shown in FIG.

The heat radiating plate 11 is formed in a dish shape with a shallow bottom as a whole, and is provided with a mounting hole 19 and a steam vent hole 20 in the center. The radiator plate 11 has a flange 21 over its entire circumference.
And engaging projections 22 protruding outward from the outer peripheral edge of the flange 21 are provided at regular intervals at six locations on the entire circumference. The circumferential length of the engaging protrusion 22 is set to be smaller than the interval between the engaging rails 14 of the heat radiating plate 11.

The outer peripheral edge of the flange 21 including the outer edge of the engaging projection 22 is provided with a rib 23 bent upward.
Is formed, and a stopper claw 24 is provided on the rib 23 of the flange 21 close to one end of any one of the engaging projections 22. The position where the stopper claw 24 is provided, that is, the position close to one end of the engaging projection 22 is
When viewed in the direction of rotation when attaching to the lid ring 10 (see the arrow a in FIG. 1), the position is closer to the end of the engagement protrusion 22 that has advanced in the rotational phase.

The above-described lid ring 10, radiator plate 11, and lid packing 12 are assembled as follows.

That is, as shown in FIG. 2, the packing 12 is mounted so that the mounting portion 16 on which the rib 18 is formed is placed on the packing receiving portion 13 on the inner peripheral edge of the lid ring 10.

The heat radiating plate 11 is fitted to the inner diameter portion of the lid ring 10, and its engaging projection 22 is placed between the engaging rails 14 of the lid ring 10 (see the two-dot chain line in FIG. 3). When the plate 11 is rotated by a certain angle (arrow b in FIG. 3)
), The engaging protrusion 22 is provided on the engaging rail 14 of the lid ring 10.
Fit inside. The heat radiating plate 11 is rotated until one of the engagement protrusions 22 hits the stopper wall 15 of one engagement rail 14.

When the stopper claw 24 is bent outward with the engaging projection 22 abutting on the stopper wall 15, the stopper claw 24 contacts the outer end surface of the stopper wall 15. Thereby, the relative rotation between the heat sink 11 and the lid ring 10 is prevented.

In the case shown in the figure, the stopper claw 24 comes into contact with the outer end surface of the stopper wall 15.
The stopper claw 24 may be provided at a position corresponding to one end surface of the engagement rail 14 without the stopper wall 15.

In the assembled state as described above, between the inward wall 14b of the engagement rail 14 and the packing receiving portion 13, as shown in FIG.
The rib 18 contacts the packing receiving portion 13, and the rib 23 of the engaging protrusion 22 of the heat sink 11 contacts the lower surface of the inward wall 14b. For this reason, the mounting portion 16 and the engaging protrusion 22 are sandwiched between the packing receiving portion 13 and the inward wall 14b, and the two are brought into close contact with each other to achieve sealing. Since the ribs 18 of the lid packing 12 give the mounting portion 16 flexibility, the adhesion is further improved.

The means for preventing the relative rotation between the lid ring 10 and the heat radiating plate 11 is not limited to the above-described stopper wall 15 and the stopper claw 24, but also includes a concave and convex portion provided on the lid ring 10 and the heat radiating plate 11. For example, the engagement rails 14 may be provided with an inclined surface that becomes lower as the rotational phase advances, and the engaging protrusion 22 may be tightened with the inclined surface.

The lid ring set A described above is incorporated into a lid set B of a rice cooker, as shown in FIG. 4, and a heat retaining heater 26 is mounted on the upper surface of the radiator plate 11, and an inner lid 27 is mounted on the lower surface. Can be The lid ring 10 is mounted inside the outer lid 28. Lip part 17 of lid packing 12 is pot 2
9 in close contact with the outer peripheral flange.

When the hook 30 is pushed, the lid set B is opened around the hinge pin 31.

[0025]

As described above, according to the present invention, the seal is secured by sandwiching the heat sink and the lid packing between the packing receiving portion provided on the lid ring and the inward wall of the engaging rail. In addition, these members are integrated to form a lid ring set. For this reason, the assembling work of the lid ring set is streamlined, and the cost can be reduced by reducing the number of parts.

Further, since the heat radiating plate is mounted so that the rib of the engaging projection abuts on the lower surface of the inward wall of the engaging rail, the radiating plate does not become higher than the engaging rail. Since it is installed inside the joint rail, there is an advantage that the lid ring set is compact.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment.

FIG. 2 is a partial sectional view of an assembled state of the same.

FIG. 3 is a partial plan view showing an assembled state of the same.

FIG. 4 is a cross-sectional view of a state in which the rice cooker is assembled.

FIG. 5 is a partial cross-sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Lid ring 11 Heat radiating plate 12 Lid packing 13 Packing receiving part 14 Engaging rail 14a Standing wall 14b Inward wall 15 Stopper wall 16 Mounting part 17 Lip part 18 Rib 19 Mounting hole 20 Steam vent hole 21 Flange 22 Engaging projection 23 Rib 24 Stopper claw 26 Insulation heater 27 Inner lid 28 Outer lid 29 Pot 30 Hook 31 Hinge pin

Claims (1)

(57) [Scope of request for utility model registration] 1. A lid ring set comprising a combination of a lid ring, a heat radiating plate and a ring-shaped lid packing, wherein a packing receiver having a required width is formed along an inner periphery of an upper surface of the lid ring, and A plurality of engaging rails are provided at regular intervals in the circumferential direction along the outside, and the engaging rail is provided on an upright wall rising from the packing receiving portion.
A length which is formed in an inverted L shape in cross section composed of an inward wall provided at the upper end of the upright wall, and which is fitted to the periphery of the heat radiating plate in a number equal to the number of the engaging rails and at a distance between the engaging rails. provided protruding the engagement protrusion outward, outward to the lid packing
Provide a brim-shaped mounting part and attach the lid packing to the lid ring.
The heat sink to the inner periphery of the lid packing.
Respectively, and a part of the engagement protrusion is inserted into the engagement rail.
By touching the lower surface of the facing wall,
The attachment part and the engagement projection of the heat sink are connected to the packing receiving part.
A rice cooker lid ring set sandwiched between an inward facing wall .