JP3681649B2 - Rice cooker lid opening and closing structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lid opening / closing structure of a rice cooker (including a rice cooker).
[0002]
[Prior art]
The lid opening / closing device of the rice cooker has a lid rear portion attached to the rear portion of the rice cooker main body by a hinge structure, applies an urging force in the opening direction to the lid, and engages the lid with the rice cooker main body by a hook. Generally, the configuration is such that the lid is automatically opened by releasing the joint by operating the hook button.
[0003]
The hinge structure in this case is, for example, as shown in Japanese Patent Publication No. 6-102050, a pair of left and right main body side bearings, a hinge shaft supported by the body side, and one or two torsion coils inserted through the hinge shaft It is constituted by a spring, and a lid side bearing is rotatably attached to an intermediate portion of the hinge shaft.
[0004]
[Problems to be solved by the invention]
However, when a single hinge shaft is used as described above, the lid-side bearing is supported at one central portion of the hinge shaft, so that the lid can be opened and closed stably (open and closed without rattling). In addition, the axial length of the lid-side bearing needs to be set longer than a certain extent. For this reason, the structure of the whole hinge part becomes large and there exists a problem which receives design restrictions.
[0005]
Therefore, the present invention solves the above problem by dividing the hinge shaft into two left and right, and supporting the lid with the divided left and right hinge shafts, and the lid opening / closing structure of the rice cooker having a compact hinge structure It is an issue to provide.
[0006]
[Means for solving the problems]
In order to solve the above-mentioned problems, the present invention attaches a lid rear part to a rear part of a rice cooker body by a hinge shaft, and urges the lid in an opening direction by a hinge spring, the hinge shaft, its bearing part, and the hinge The hinge part cover applied from the back of the rice cooker body to the storage part of the spring is fixed, and the lid is automatically opened by releasing the engagement of the lid engaged with the rice cooker body. In the lid opening / closing structure, the hinge shaft is composed of two left and right hinge shafts facing each other at a predetermined interval, the outer end portion of each hinge shaft is fixed to the lid, and the bearing portion is attached to each hinge shaft. It is constituted by an outer bearing portion and an inner bearing portion provided on the hinge shaft, a hinge spring is inserted through each hinge shaft, and a part of the hinge portion cover is pressed against each hinge spring.
[0007]
According to the above configuration, the left and right hinge shafts are shorter than one conventional hinge shaft, and the lid is supported by the left and right outer bearings, so that a sufficient axial interval is secured. The lid opens and closes stably.
[0008]
As another means for solving the above-mentioned problems, a lid rear portion is attached to the rear portion of the rice cooker body by a hinge shaft, and the lid is biased in an opening direction by a hinge spring, and the hinge shaft, the bearing portion, and the hinge spring are The lid of the rice cooker that automatically opens the lid by fixing the hinge cover applied from the rear of the rice cooker body to the storage portion and releasing the engagement of the lid engaged with the rice cooker body. In the structure, the hinge shaft is composed of two left and right hinge shafts facing each other at a predetermined interval, the outer end portion of each hinge shaft is inserted through the lid, and the hinge spring is inserted through each hinge shaft. The bearing portion is constituted by an outer bearing portion and an inner bearing portion provided for each hinge shaft, the inner bearing is formed by a metal bearing member, and the bearing member is fixed to the rice cooker body. You can also adopt Kill.
[0009]
According to this configuration, as in the case described above, the left and right hinge shafts are shorter than the conventional single hinge shaft, and the rotation support of the lid is performed at the left and right outer bearing portions. In addition to ensuring a sufficient interval and stable opening and closing, the strength of the inner bearing portion is ensured by using a metal bearing member.
[0010]
In addition, the structure which reinforced the spring end support part of the said hinge spring with the said bearing member, the structure which reinforced the said bearing member with the metal reinforcement member fixed to the said rice cooker main body, and the inside of the said bearing member In addition, a configuration in which an inner bearing member that constitutes an inner bearing portion is provided opposite to this, and a configuration in which an opposing bearing portion that surrounds the hinge shaft end supported by each external bearing portion on the reinforcing member from above is provided. Can be adopted. Both configurations reinforce the bearing structure of the hinge shaft.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS A rice cooker lid opening / closing device according to an embodiment of the present invention will be described below. The rice cooker of the first embodiment shown in FIG. 1 to FIG. 3 is a torsion attached to the main body side hinge portion 2 by attaching the rear portion of the lid 3 via the main body side hinge portion 2 provided at the rear portion of the jar main body 1. The lid 3 is urged in the opening direction by a hinge spring 4 formed of a coil spring. Also, a known hook structure is provided at the front end of the lid 3, and the hook is disengaged by operating the hook button 6 so that the lid 3 is automatically opened. The lid 3 is provided with a steam hole set 5 for discharging steam.
[0012]
The outer end portions of the hinge shafts 8 and 8 that are concentrically opposed to each other are fixed to the left and right side walls of the notch-like lid-side hinge portion 7 provided at the rear portion of the lid 3. The hinge shafts 8 and 8 are usually formed integrally with the lid body 9.
[0013]
A hook 11 is detachably accommodated in the jar main body 1 and the main body side hinge portion 2 is provided behind the hook 11. The main body side hinge portion 2 is formed to be recessed from the rear surface of the jar main body 1, and its inner wall 12 stands between the storage portion of the hook 11. A hinge part cover 13 that covers the hinge part 2 from behind is fitted to the fitting step part 14. The hinge cover 13 is configured such that a pair of inwardly engaging claws 15 provided on the upper edge thereof are engaged with two engaging portions 16 provided on the back wall 12.
[0014]
As shown in FIG. 2, outer bearing portions 17 and 17 are provided on the left and right side walls of the main body side hinge portion 2. Each outer bearing portion 17 is formed by a groove-shaped shaft support portion opened upward. The back wall 12 is provided with a pair of left and right inner bearing portions 18, 18. Each inner bearing portion 18 is formed by a groove-shaped shaft support portion opened rearward. The left and right outer bearing portions 17 and the inner bearing portion 18 are respectively provided corresponding to the hinge shaft 8. The coil portion of the hinge spring 4 described above is inserted into each hinge shaft 8, and a relief 19 for avoiding interference between the coil portion and the back wall 12 is formed in the back wall 12.
[0015]
In the inner wall 12, a spring end support portion 20 is provided below the inner bearings 18 and 18. The spring end support portion 20 is provided with a spring end insertion pocket 21 into which one spring end portion 22 of the hinge spring 4 is inserted. The other spring end 23 of the hinge spring 4 is inserted and supported by the spring end support 24 (see FIG. 3B) of the lid body 9. Further, the spring end support portion 21 is provided with a screw hole 25 opened rearward.
[0016]
The above-described hinge part cover 13 is provided with an insertion hole 27 for a screw 26 screwed into the screw hole 25. A pair of left and right projections 28, 28 are provided on the inner surface of the hinge cover 13, and the projections 28 are pressed against the coil portions of the hinge springs 4. A knob 29 is provided on the back surface of the hinge cover 13.
[0017]
The lid opening / closing structure of the rice cooker according to the first embodiment is as described above, and the left and right hinge shafts 8 are supported by the outer bearing portion 17 and the inner bearing portion 18 and the protrusions 28 of the hinge portion cover 13. Is pressed against the hinge spring 4 to prevent rearward slipping. The width (axial length) of the main body side hinge portion 2 is a distance between the left and right outer bearing portions 17 and 17 at the maximum, and the opening / closing stability of the lid 3 is between the left and right outer bearing portions 17 and 17. Determined by distance. Accordingly, the width of the main body side hinge portion 2 is limited to a size necessary for the stable support of the lid 3, and no further width is required, so that the size reduction can be achieved.
[0018]
Next, the lid opening / closing structure of the second embodiment shown in FIGS. 4 and 5 will be described. The basic structure is the same as in the case of the first embodiment described above, except that the left and right hinge shafts 8 and 8 are metal pins independent of the lid 2, the metal bearing member 31 and the metal The point which used the reinforcement member 32 of this is different.
[0019]
The hinge shaft 8 is inserted from the outside of the lid body 9, and the hinge spring 4 is inserted through the hinge shaft 8 in the same manner as described above, and each hinge shaft 8 is supported by the outer bearing portion 17 and the inner bearing portion 18, respectively. . However, the inner bearing portion 18 in this case is provided in the bearing member 31 described above.
[0020]
As shown in FIG. 4, the bearing member 31 is provided with a U-shaped bent portion 33 at the upper end portion, and the inner bearing portion 18 has a groove opened to the U-shaped bent portion 33 on the back wall 12 side. Formed by a shaft support. A fixed portion 34 is provided below the U-shaped bent portion 33, and a screw insertion hole 35 is provided in the fixed portion 34. A screw 26 for fixing the hinge cover 13 (see FIG. 2) is inserted into the screw insertion hole 35, and thereby fixed to the screw hole 25. An inverted L-shaped bent portion 36 bent downward from the fixing portion 34 extends along the lower surface of the hook insertion pocket 21 and downward. The bearing member 31 forms the inner bearing 18 and reinforces the screw end support portion 20.
[0021]
Further, as shown in FIG. 4, the reinforcing member 32 has a structure in which the left and right outer bearing reinforcing portions 37, 37 are connected by a band-shaped bridge portion 38, and the bridge portion 38 is the spring end support portion 20. It is bent along the lower column part 39. Further, hook-shaped opposing bearing portions 41 that are opened downward are provided on the upper portions of the left and right outer bearing reinforcing portions 37, and are opposed to the upper side inside the outer bearing portion 17, from the rear of the hinge shaft 8. It goes around and supports the upper part of the hinge shaft 8. Further, the reinforcing member 32 is formed with a bent protrusion 43 that is inserted into the hole 42 of the back wall 12 and protrudes inward of the back wall 12. Each of the outer bearing portions 17 is reinforced by fixing the reinforcing member 32 to the back wall 12 with screws 44, 44, and the bridge portion 38 is pressed against the inverted L-shaped bent portion 36 of the bearing member 31 (see FIG. 5 (a) and (b)), thereby the bearing member 31 is reinforced. The protruding piece 43 is engaged with the hole 42 of the back wall 12 to ensure the stability of the reinforcing member 32 itself.
[0022]
The second embodiment is as described above. The inner bearing portion 18 is provided on the metal bearing member 31, and the bridge portion 38 of the reinforcing member 32 is pressed against the lower end portion of the bearing member 31. As a result, the support strength of the inner end portion of each hinge shaft 8 is improved. Further, since the opposing bearing portion 41 of the reinforcing member 32 is provided facing the outer bearing portion 17, the support strength at the outer end portion of each hinge shaft 8 is also improved.
[0023]
Next, the third embodiment shown in FIGS. 6 to 8 is the same except that the structure of the bearing member 31 in the second embodiment is partially different. That is, as shown in FIG. 6, the bearing member 31 in this case is provided with an inverted U-shaped bent portion 45 at the upper portion and fixed pieces 46 and 46 protruding left and right at the lower portion. The inverted U-shaped bent portion 45 forms an inner bearing portion 18a at the groove-like portion, and supports the inner end portion of the hinge shaft 8 by the inner bearing portion 18b of the back wall 12 facing the inner bearing portion 18a.
[0024]
Further, the screws 47 inserted through the respective fixing pieces 46 are fixed to the back wall 12 so as to be screwed at three locations together with the screws 26. The structure in which the inverted L-shaped bent portion 36 provided at the lower end portion of the bearing member 31 is pressed by the bridge portion 38 of the reinforcing member 32 is the same as described above. The structure of the reinforcing member 32 is the same. The bearing member 31 is more firmly fixed.
[0025]
Further, the fourth embodiment shown in FIGS. 9 to 11 is different from the third embodiment in that the shape of the bearing member 31 is slightly different and that the inner bearing member 48 is provided facing the bearing member 31. Is different. That is, the bearing member 31 in this case has a pressing piece 49 standing upward at the upper part thereof. The inner bearing member 48 is disposed at the center of the back wall 12 and is fixed by screws 47 and 47 that are the same as those of the bearing member 31 by mounting pieces 51 and 51.
[0026]
As shown in FIG. 11, the inner bearing member 48 includes a pair of upper and lower bearing pieces 53, 53 bent rearward on both sides of the back plate 52, and inner bearing portions 18, 18 opened rearward are formed. The open portion is closed by the pressing piece 49 so as to prevent the hinge shaft 8 from departing. Since both the bearing member 31 and the inner bearing member 48 are made of metal, the strength of the inner bearing portion 18 is improved.
[0027]
【The invention's effect】
As described above, the present invention divides the hinge shaft that supports the lid so as to be openable and closable into two left and right, and is supported by the bearing portion constituted by the outer bearing portion and the inner bearing portion, respectively. Each hinge shaft is shorter than the conventional one, and the lid opening / closing stability is high, and a compact opening / closing structure can be realized. Further, by using a metal bearing member or reinforcing member, the bearing structure of the hinge shaft can be strengthened and its durability can be improved.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a first embodiment. FIG. 2 is a partially enlarged exploded perspective view of the same. FIG. 3A is a front view of a part from which the hinge cover is removed. FIG. FIG. 4 is an exploded perspective view of the second embodiment. FIG. 5A is a front view of a portion where the hinge cover is removed. FIG. 4B is a hinge view cover attached. FIG. 6 is an exploded perspective view of the third embodiment. FIG. 7 is a perspective view of a part from which the hinge cover is removed. FIG. 8A is a front view of the part from which the hinge cover is removed. FIG. 9 (b) is a sectional view of a portion to which the hinge cover is attached. FIG. 9 is an exploded perspective view of the fourth embodiment. FIG. 10 (a) is a front view of the portion from which the hinge cover is removed. Sectional view of the portion with the hinge cover attached. [Fig. 11] Partially enlarged perspective view of the above [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Jar main body 2 Main body side hinge part 3 Lid 4 Hinge spring 5 Steam hole set 6 Hook button 7 Lid side hinge part 8, 8 'Hinge shaft 9 Lid main body 11 Pot 12 Back wall 13 Hinge part cover 14 Fitting step part 15 Engagement Stopper 16 Locking part 17 Outer bearing part 18 Inner bearing part 18a, 18b Inner bearing part 19 Bracing 20 Spring end support part 21 Spring end insertion pocket 22 Spring end part 23 Spring end part 24 Spring end support part 25 Screw hole 26 Screw 27 Screw hole 28 Projection 29 Knob 31 Bearing member 32 Reinforcement member 33 U-shaped bent portion 34 Fixing portion 35 Screw insertion hole 36 Reverse L-shaped bent portion 37 Outer bearing reinforcing portion 38 Bridge portion 39 Column portion 41 Opposing bearing portion 42 Hole 43 Projection piece 44 Screw 45 Reverse U-shaped bent portion 46 Fixing piece 47 Screw 48 Inner bearing member 49 Holding piece 51 Mounting piece 52 Back plate 53 Bearing piece

Claims (3)

  The rear part of the lid is attached to the rear part of the rice cooker body by a hinge shaft, the lid is urged in the opening direction by a hinge spring, and is applied to the hinge shaft, its bearing part and the storage part of the hinge spring from the rear of the rice cooker body. In the lid opening / closing structure of the rice cooker that automatically opens the lid by releasing the engagement of the lid engaged with the rice cooker body, and fixing the hinge cover, the hinge shaft has a predetermined interval. And the left and right hinge shafts opposed to each other, and the outer end portion of each hinge shaft is fixed to the lid, and the bearing portion is composed of an outer bearing portion and an inner bearing portion provided for each hinge shaft. A lid opening / closing structure for a rice cooker, wherein a hinge spring is inserted through each hinge shaft, and a part of the hinge cover is pressed against each hinge spring. The rear part of the lid is attached to the rear part of the rice cooker body with a hinge shaft, the lid is urged in the opening direction by a hinge spring, and applied to the hinge shaft, its bearing part and the storage part of the hinge spring from the rear of the rice cooker body. In the lid opening / closing structure of the rice cooker that automatically opens the lid by releasing the engagement of the lid engaged with the rice cooker body, and fixing the hinge cover, the hinge shaft has a predetermined interval. The left and right hinge shafts are opposed to each other, the outer end of each hinge shaft is inserted into the lid, the hinge spring is inserted into each hinge shaft, and the bearing portion is provided for each hinge shaft. was constructed by the outer bearing part and the inner bearing section, a shape bent portion in plan view U provided at the upper end portion of the metal bearing member is provided with a further inverse L-shaped bent portion which is bent downward from the fixed portion, Above of the metal bearing member A pair of groove-shaped bearing support portions that are opened on the back wall side of the storage portion of the hinge spring, and the inner bearing portions of the hinge shafts are formed by the bearing support portions. Is fixed to the rice cooker body, and a metal reinforcing member having a structure in which the left and right outer bearing reinforcing portions are connected by a belt-like bridge portion is fixed to the rear wall of the storage portion of the hinge spring, and the reinforcing member A hook-shaped opposed bearing portion opened downward is provided at the upper portion of the outer bearing reinforcing portion, the opposed bearing portion is opposed to the upper portion of the outer bearing portion, the outer bearing portion is reinforced, and the bridge portion is A lid opening / closing structure for a rice cooker, wherein the inner bearing portion is reinforced by being pressed against an inverted L-shaped bent portion of the bearing member . The lid opening / closing structure of the rice cooker according to claim 2 , wherein an inner bearing member that constitutes an inner bearing portion is provided inside the bearing member so as to face the bearing member.

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