JP4027846B2 - Rice cooker lid mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lid mounting structure in a rice cooker.
[0002]
[Prior art]
In the rice cooker, a structure is employed in which a lid is attached to a hinge part provided at the rear part of the rice cooker body via a hinge pin so as to be freely opened and closed. In this case, the lid mounting structure generally employs a structure in which a hinge pin having a hinge spring inserted therein is inserted in advance and the hinge pin is rotatably supported by the hinge portion of the trunk portion (for example, Patent Document 1). reference).
[0003]
In the above lid mounting structure, the hinge pin inserted through the hinge spring is mounted on the lid in advance, and the assembly procedure for engaging the hinge pin with the hinge portion of the trunk is taken. Will be exposed on the back of the trunk. For this reason, a hinge cover is attached to the back surface of the hinge portion of the trunk portion so that these members cannot be seen from the outside, thereby enhancing the aesthetics and preventing the entry of dust and the like.
[0004]
[Patent Document 1]
JP 2002-355168 A (see FIGS. 7 and 8)
[0005]
[Problems to be solved by the invention]
However, according to the above-described lid mounting structure, the hinge cover is necessary as one part, and the boundary line of the hinge cover shape remains on the back surface of the trunk portion.
[0006]
Accordingly, an object of the present invention is to reduce the number of parts by eliminating the hinge cover, and to improve the design of the back surface of the body portion.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a rice cooker in which a lid of a rice cooker is attached to a rice cooker body by a hinge pin so as to be freely opened and closed, and the lid is biased in an opening direction by a hinge spring attached to the hinge pin In the lid mounting structure of the cooker, the lid is constituted by an outer lid, an inner lid attached to the inner surface of the outer lid, and a lid hinge member attached to the rear surface of the outer lid on the inner side of the outer lid, and the lid on the rice cooker body A mounting base is provided and the hinge spring is housed in the lid mounting base, the lid hinge member is assembled to the lid mounting base and coupled by the hinge pin, and then the outer lid is combined with an inner lid. A structure that fits and fixes to the lid hinge member is adopted.
[0008]
According to the above-described structure, the lid hinge member is attached to the lid mounting base with the hinge pin in advance, and then the outer lid is fitted and fixed to the lid hinge member. Therefore, the hinge pin and the hinge spring are placed inside the lid mounting base. Can be stored. Therefore, since these members are not exposed on the back surface of the rice cooker body, a hinge cover is not necessary.
[0009]
Furthermore, as a specific structure, the lid mounting base is a case-shaped portion having an open upper end projecting on the rear upper surface of the body portion of the rice cooker body, and the body side having bearing holes on both side surfaces thereof. A hinge portion is provided, and the lid hinge member has left and right fitting portions to be fitted to both side surfaces of the lid mounting base, and a pin hole is provided in the fitting portion, and the pin hole and the bearing hole are provided. By inserting the hinge pin, the lid hinge member can be rotatably attached to the lid mounting base, and a structure in which a notch that matches the lid mounting base is provided at the rear edge of the outer lid can be adopted. According to this structure, since the lid mounting base matches the notch portion of the outer lid, there is no gap between the lid mounting base and the outer lid. Further, in this case, when the rear wall surface of the lid mounting base is configured to be flush with the wall surface of the trunk portion that is continuous on both side surfaces thereof, the aesthetics of the trunk rear surface is further increased.
[0010]
A structure in which screwing bosses are provided in the vicinity of the left and right ends of the notch on the inner surface of the outer lid, and the boss is fitted and screwed to a boss fitting provided on the lid hinge member. Can be taken.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows the rice cooker of the embodiment as viewed from the back side, and a lid 2 is attached to the rice cooker body 1 so as to be openable and closable, and both end portions of the handle 3 are rotatable on both sides of the rice cooker body 1. It is installed. On the back surface of the body 4 of the rice cooker body 1, a protruding piece 5 for receiving the handle 3 tilted backward is provided, and the lid 2 is provided with a steam hole 6.
[0012]
FIG. 2 shows a state where the lid 2 is opened. The lid 2 includes an outer lid 2a, an inner lid 2b fixed to the inner surface thereof, and a lid hinge member 2c attached to the rear end portion of the outer lid 2a along the rear end edge of the inner lid 2b.
[0013]
A rice cooker 7 is housed inside the rice cooker body 1 and an operation panel 8 is provided on the front surface. An unlock button 9 is provided at the upper part of the operation panel 8. As shown in FIG. 3, the heating plate 11 is provided inside the rice cooker body 1, and the rice cooker 7 is placed thereon. A steam hole set 12 communicating with the steam hole 6 is attached to the inner lid 2b. A lid packing 13 is attached to the outer periphery of the inner lid 2b and is in close contact with the opening periphery of the rice cooker 7. A lid mounting base 14 is provided on the upper surface of the rear part of the body 4, and an outer lid 2 a and an inner lid 2 b combined therewith are attached to the lid mounting base 14 via a lid hinge member 2 c.
[0014]
As shown in FIGS. 3 and 4, the lid mounting base 14 is a case-shaped part formed integrally with the upper surface of the body 4. As shown in FIG. 4, the overall configuration has front and rear wall surfaces 16 and 17 and both side surfaces 18 and 19 (see FIG. 5) that are long in the left-right direction, and the upper surface is a slit-shaped opening 20 that is long in the left-right direction. Is provided. Bearing holes 21 and 22 are provided concentrically on both side surfaces 18 and 19. Further, as shown in FIG. 1, the rear wall surface 17 rises on the same plane as the body portions 4 on both sides thereof, and a notch 23 is provided at the upper edge. As will be described later, the notch 23 is provided to prevent interference with one hook portion 32 of the hinge spring 29 when the lid 2 is opened (see FIG. 10).
[0015]
As shown in FIG. 4, the lid hinge member 2c is provided with hinge portions 24 and 25 which are fitted to the outer surfaces of both side surfaces 18 and 19 of the lid mounting base 14 so as to protrude rearward on both the left and right sides. Hinge holes 26 and 27 are concentrically provided in the portions 24 and 25, respectively. A U-shaped fitting portion 28 in plan view is formed between the left and right hinge portions 24 and 25, and the fitting portion 28 is fitted to the front wall surface 16 side of the lid mounting base 14.
[0016]
A hinge spring 29 is housed inside the opening 20 of the lid mounting base 14 and a hinge pin 30 inserted through the hinge holes 26 and 27 of the hinge portions 24 and 25 and the bearing holes 21 and 22 of the lid mounting base 14. Inside the lid mount 14, the coil portion of the hinge spring 29 is penetrated. The hook portion 31 at one end of the hinge spring 29 is engaged with the inside of the lid mounting base 14, and the hook portion 32 at the other end is inserted into the hook receiving portion 33 of the lid hinge member 2 c and engaged with the inner surface of the outer lid 2 a. (See FIGS. 3 and 5).
[0017]
The lid hinge member 2c is rotatable about the hinge pin 30 and the fitting portion 28 is fitted to the front wall surface 16 of the lid mounting base 14 when the lid is tilted forward (the lid 2 is closed, see FIG. 10). The fitting portion 28 fits above the opening portion 20 of the lid mounting base 14 in the upright state (the open state of the lid 2; see FIG. 2). The lid hinge member 2 c is always urged in the standing direction by the spring force of the hinge spring 29.
[0018]
The connection structure of the lid hinge member 2c and the outer lid 2a is as shown in FIGS. That is, a rectangular notch 34 shaped to fit the lid mounting base 14 is provided on the rear end surface of the outer lid 2a (see FIGS. 4 and 6), and on the left and right sides of the notch 34. The prismatic screwing boss portions 35 and 36 are integrally formed. Further, an annular reinforcing rib 37 is formed inside the screwing boss portions 35, 36, a positioning portion formed by a pair of notches 38, 39 on the reinforcing rib 37, and a rectangular engagement hole 41, 42 is formed.
[0019]
On the other hand, the lid hinge member 2c is provided with boss fitting portions 43 and 44 (see FIG. 4) that match the screwed boss portions 35 and 36 in the vicinity of the hinge portions 24 and 25. Screw holes 45 and 46 (see FIG. 7) are provided in the portions 43 and 44, respectively. Further, a circular arc portion 47 is formed along the outer peripheral surface of the reinforcing rib 37 on the surface of the lid hinge member 2c opposite to the fitting portion 28, and the circular arc portion 47 is fitted into the notches 38 and 39. Positioning pieces 48 and 49 and engagement claws 51 and 52 that engage with the engagement holes 41 and 42 are provided outside the positioning pieces 48 and 49.
[0020]
As shown in FIGS. 11 and 12, the inner lid 2 b bends and forms a mounting portion 53 that protrudes in the shape of a collar on the peripheral portion of a metal disk-shaped heat radiating plate 55. A caulking portion 54 is provided at the upper portion, and the fitting groove 57 provided in the base portion 56 of the lid packing 13 is fitted into the mounting portion 53, and the upper base portion 56 of the fitting groove 57 is fitted by the caulking portion 54. It is caulked and fixed. A pair of engaging claws 58, 58 and a pair of fixing pieces 59, 59 are provided in a part of the caulking portion 54. A lid heater 61 is mounted on the upper surface of the heat radiating plate 55 and is covered with an aluminum foil 62.
[0021]
As shown in FIG. 7, the pair of engagement claws 58, 58 are engaged with engagement pieces 63, 63 provided on the inner surface of the outer lid 2a, and the fixing pieces 59, 59 are It fits into the notches 38 and 39, and engages with engaging protrusions 64 and 64 provided outside the notches 38 and 39, and is combined by temporary fixing (see FIG. 8).
[0022]
As described above, the lid hinge member 2c is previously attached to the lid mounting base 14 of the body 4 by the hinge pin 30, and the lid mounting base 14 is urged by the biasing force of the hinge spring 29 as shown in FIG. Held upright. In the standing state, the notch 34 of the outer lid 2a combined with the inner lid 2b is inserted from the arc portion 47 side of the lid hinge member 2c, the arc portion 47 is along the outer peripheral surface of the reinforcing rib 37, and the positioning piece 48, 49 is fitted into the notches 37 and 38 of the reinforcing rib 37, and the engaging claws 51 and 52 are engaged with the engaging holes 41 and 42. Thereafter, the boss fitting portions 43 and 44 are fitted into the screw-fixed boss portions 35 and 36 and fixed by screws 65 and 65 that are passed through the screw holes 45 and 46 (see FIGS. 8B and 9C). ).
[0023]
The lid hinge member 2c is fitted and fixed to the outer lid 2a as described above, and at the same time, the fixing pieces 59 and 59 of the inner lid 2b are pressed against the inner surface of the outer lid 2a by the positioning pieces 48 and 49 and fixed. (See FIG. 9B).
[0024]
As described above, the lid 2 is cooked by fitting and fixing the outer lid 2a combined with the inner lid 2b to the lid hinge member 2c that is rotatably attached to the lid mounting base 14 of the body 4 by the hinge pin 30. It is attached to the container body 1 so as to be openable and closable (see FIG. 2). When the rear surface of the rice cooker body 1 is viewed with the lid 2 closed, the rear wall surface 17 of the lid mounting base 14 on the same plane as the left and right body parts 4 rises above the protruding pieces 5 as shown in FIG. The state fitted to the notch 34 of the outer lid 2a is observed. FIG. 10 shows that the lid hinge member 2 c is tilted forward in the closed state of the lid 2, and shows the positional relationship between one hook portion 32 of the hinge spring 29 and the notch 23. When the lid 2 is opened, the straight portion of the hook portion 32 enters the notch 23, whereby interference between the hook portion 32 and the rear wall surface 17 is prevented.
[0025]
As shown in FIG. 13, the right half of the lid mounting base 14 as viewed from the rear upper surface is a storage portion 66 of the hinge spring 29, and the upper surface is opened by the opening 20. There is a case where rice balls generated with cooking rice flow into the inside through the opening 20. However, since the notch 23 is formed to a depth reaching the bottom surface of the storage portion 66, the internal rice pad is discharged from the notch 23 to the outside. An insertion hole 67 of the hook portion 31 of the hinge spring 29 is provided at the end of the storage portion 66, and a screw may flow into the insertion hole 67, but it is a bag path and overflows to the outside. There is no need to actively discharge.
[0026]
In the above embodiment, the structure in which the hinge cover is omitted is described for the type that does not use the lid ring member as the constituent member of the lid. However, the hinge cover is also formed by the same structure in the lid using the lid ring member. Can be omitted.
[0027]
【The invention's effect】
As described above, according to the present invention, the lid hinge member constituting a part of the lid is first attached to the lid attaching base of the trunk portion by the hinge pin, and the biasing force is applied to the lid hinge member by the hinge spring housed in the lid attaching base. In this state, since the outer lid combined with the inner lid in advance is fitted and fixed to the lid hinge member, the hinge spring and the hinge pin are not exposed to the outside. For this reason, while a hinge cover can be abbreviate | omitted and cost reduction can be aimed at, the aesthetics of the trunk | drum back surface of a rice cooker can be improved.
[Brief description of the drawings]
FIG. 1 is a perspective view as seen from the back side of the embodiment. FIG. 2 is a perspective view as seen from the front side when the lid is opened. FIG. 3 is a cross-sectional view. FIG. 5 is a cross-sectional view of the same hinge part. FIG. 6 is an exploded perspective view of the same hinge part. FIG. 7 is an exploded perspective view of the same lid. FIG. (B) Cross-sectional view taken along line aa in FIG. 8 (b) (b) Cross-sectional view taken along line bb in FIG. 8 (b) FIG. 10 is a partial plan view of the same. FIG. 11 is a perspective view of the inner lid. FIG. 12A is a partial sectional view of the inner lid. (C) Partial cross-sectional view of the inner lid of the same. [FIG. 13] (a) Top view of the lid mounting base (b) Cross-sectional view taken along line bb in (a). c) Cross-sectional view taken along line cc in (a) (d) in FIG. Sectional view of the d-line (e) cross-sectional view of line e-e in (a) Figure EXPLANATION OF REFERENCE NUMERALS
DESCRIPTION OF SYMBOLS 1 Rice cooker body 2 Lid 2a Outer lid 2b Inner lid 2c Lid hinge member 3 Handle 4 Body part 5 Protrusion piece 6 Steam hole 7 Rice cooker 8 Operation panel 9 Lock release button 11 Heating plate 12 Steam hole set 13 Lid packing 14 Lid installation Base 16 Front wall surface 17 Rear wall surface 18, 19 Side surface 20 Opening portion 21, 22 Bearing hole 23 Notch 24, 25 Hinge portion 26, 27 Hinge hole 28 Fitting portion 29 Hinge spring 30 Hinge pins 31, 32 Hook portion 33 Hook receiving portion 34 Notch 35, 36 Screwed boss 37 Reinforcement rib 38, 39 Notch 41, 42 Engagement hole 43, 44 Boss fitting part 45, 46 Screw hole 47 Arc part 48, 49 Positioning piece 51, 52 Engagement claw 53 mounting portion 54 crimping portion 55 heat sink 56 base 57 fitting groove 58 engaging claw 59 fixing piece 61 lid heater 62 aluminum foil 63 engaging piece 64 engaging protrusion 6 Bis 66 housing portion 67 insertion hole

Claims (3)

A rice cooker lid is attached to the rice cooker body by a hinge pin so that it can be opened and closed. The hinge spring attached to the hinge pin urges the lid in the opening direction, and the lid is attached to the outer lid and an inner lid and an outer lid attached to the inner surface. A lid hinge member mounted on the inner surface of the lid toward the rear side of the inner lid, and a lid mounting base is provided in the rice cooker body, and the hinge spring is housed in the lid mounting base, the lid mounting base In the lid attachment structure of the rice cooker, the lid is attached to the lid hinge member and the outer lid combined with the lid is fitted and fixed to the lid hinge member. Is a case-shaped part with an open upper end that protrudes from the rear upper surface of the body portion of the rice cooker body and has bearing holes on both sides, and the lid hinge member is fitted to both sides of the lid mounting base. The hinge portion is provided with a hinge hole, and the hinge pin is inserted into the hinge hole and the bearing hole so that the lid hinge member is rotatably attached to the lid mounting base. A lid mounting structure for a rice cooker, characterized in that a notch that matches the lid mounting base is provided at the rear edge of the rice cooker. The lid mounting structure for a rice cooker according to claim 1 , wherein a rear wall surface of the lid mounting base is flush with a wall surface of a body portion continuous on both side surfaces thereof. In the inner surface of the outer lid, screwing bosses are provided in the vicinity of both left and right ends of the notch, and the bosses are fitted and screwed to boss fittings provided on the lid hinge member. The lid attachment structure of the rice cooker according to claim 1 or 2 .

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