JP3493508B2 - Hinged lid - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to electrical appliances.
The present invention relates to a hinged lid that is prevented from being lost or damaged without being detached from the case because the hinge portion is connected even if it is removed from the opening of the case.

[0002]

2. Description of the Related Art Conventionally, dry batteries and small batteries have been used for telephones, radios (transceivers), desk calculators, remote control operators, electric toys, wall clocks, clocks, etc., and storage cases for these have been provided. . This storage case is generally provided with a lid as a separate body so that a battery or a small battery can be easily replaced, and the lid is generally locked or fitted to cover the lid.

A hard resin such as ABS resin, nylon resin, polyolefin resin or polyacetal resin is used for such a case, and a similar hard resin is used for its lid.

Further, not only the battery case and the small battery, but also the cord storage case for household electric appliances and the like may have the lid as a separate body and are made of a hard resin.

[0005]

However, the lid of the above-mentioned conventional case has a risk of detaching only the lid when the lid is removed, and dropping or losing the lid when used outdoors. .

Further, since the hard resin has poor toughness, the locking portion or the like may be damaged when dropped or opened / closed.

The present invention solves the above-mentioned drawbacks of the prior art, and provides a hinged lid that is prevented from being lost or damaged without being detached from the case because the hinge portion is connected even if the hinge portion is removed from the case. That is the purpose.

[0008]

The technical means taken by the present invention to solve the above technical problems are as follows.

(1) A hinged lid for covering an opening of a case attached to an electric appliance, wherein a sheet-like hinge portion is extended from one end of a thick-walled lid body, and the lid body and the sheet-like hinge are provided. The hinge part and the hinge part are integrally molded with thermoplastic elastomer, and at the tip of the sheet-like hinge part,
The hinge storage space provided on the case
Stroke that locks to the convex part of the case when pulled out from
A hinged lid characterized by a top .

(2) Hook of the case on the lid body
The hinged lid according to the above (1), characterized in that an engaging portion for engaging with the concave portion is provided.

(3) The thickness of the lid body is 1 to 10 mm
There, hinged lid according the above (1) the thickness of the hinge portion is, wherein this <br/> and is 0.05 to 1 mm.

(4) The thermoplastic elastomer is polyester
The above (1), which is a stell elastomer
Hinged lid as described.

(5) Hardness of the thermoplastic elastomer
Has a Shore hardness of 47D to 72D , the hinged lid according to ( 4 ) above.

(6) The hinged lid covers the battery case.
Or a small battery case , the hinged lid according to (1) above.

[0015]

[0016]

1 to 3 show an example of a hinged lid of the present invention, FIG. 1 is a sectional view of the hinged lid, FIG. 2 is a rear view of a calculator having a battery case, and FIG. FIG. 7 is an explanatory view showing a state in which a hinged lid is opened.

Referring to FIG. 1, a hinged lid 1 of the present invention .
Is the lid main body 2 and the sheet-like hinge portion 3 (hereinafter, simply
(Referred to as a hinge part 3) , and the lid body 2 is an electric appliance.
Is a plate-like body having a size that can cover the opening of the battery case 4 of the calculator in this example .
A hook 5 provided on the battery case 4 is provided on the back surface at one end thereof.
A concave portion 6 that can be engaged with is formed, and a hook that engages with the concave portion of the battery case 4 is provided on the back surface of the other end. The hinge portion 3 is a thin sheet-like material, and extends from the rear end of the hook 7. The hinge portion 3 is housed in the hinge housing space 8 of the battery case 4 , and a convex stopper 9 is formed at the end thereof.

Although FIG. 1 shows a state in which the lid is fitted,
In order to open the lid from this state, first, the hook 7 side of the lid main body 2 is pressed in the direction of arrow A, the elasticity of the lid is used to remove the hook 7 from the recess, and the lid 7 is slid in the direction of arrow B. The hook 5 is removed from the recess 6 of the lid, and then the lid 2 is pulled up in the direction of arrow C. Then, the hinge part 3 is pulled out from the hinge storage space 8, but the stopper 9 contacts the convex part 10 of the battery case and stops there.

FIG. 2 shows a state in which the lid 1 with hinge is fitted in the battery case of the calculator 11.

FIG. 3 shows a state in which the lid body 2 is removed from the battery case 4.

The hinged lid in the present invention is made of a thermoplastic elastomer. Examples of the thermoplastic elastomer include olefin-based copolymers, soft polyvinyl chloride, polyester-based elastomers, polyamide-based elastomers and the like, but in consideration of moldability and heat resistance, polyester-based, particularly polyester-based hard segment and A polyether ester block copolymer in which an ether soft segment is block copolymerized is preferable.

The hardness of the thermoplastic elastomer forming the hinged lid varies depending on the size of the lid, but since the hardness required for the lid body and the flexibility required for the hinge portion are required, the Shore hardness of 47D to 72D is required. It is more preferably 63D to 72D.

The thickness of the lid body is 2 for fitting and shape retention.
-10 mm is preferable, and 2-8 mm is more preferable.

The thickness of the sheet of the hinge portion is preferably 0.05 to 1 mm, more preferably 0.1 to 0.5 mm in order to ensure flexibility and strength.

The shapes of the lid main body and the hinge portion are not particularly limited, but it is preferable that the lid main body is provided with a locking portion such as a hook, a convex portion or a concave portion in order to cover and fit the opening portion. . The hinge portion needs to be integrally extended from the lid body, but the shape thereof is not limited, and it is not necessary that the hinge portion has a width of one side of the lid body. It is sufficient if it has a function of preventing the battery from coming off from the battery case when it is removed, and in that sense, it may be a tape having a narrow width. However, it is preferable that the end portion is provided with a convex portion or the like that functions as a stopper so as not to separate from the case. Injection molding is preferable as the method of molding the lid with hinges, and the hinge portion can also be formed by injection molding, but it is also possible to stretch the hinge portion later in order to increase the strength.

The hinged lid of the present invention is preferably used as a lid for a battery case or a small battery case of a telephone, a radio (transceiver), a desktop calculator, a remote controller, an electric toy, a wall clock, a table clock, etc. It can also be used as a lid for cord storage cases for home appliances.

[0027]

In the hinged lid of the present invention, since the lid body is made of thermoplastic elastomer, it has appropriate flexibility,
Easy to put on and take off. Also, since the hinge part is sheet-shaped, it bends with the lid removed, making it look like turning the pages of a book.

[0028]

The hinged lid of the present invention has the following excellent effects.

(1) Since the lid main body has the hinge portion extended integrally, it does not separate from the case even if the lid main body is removed, and there is no fear of loss or drop.

(2) Since it is formed of a thermoplastic elastomer, the fitting portion is in good condition, and the end portion is chipped.
To prevent damage.

(3) Since the hinge portion is sheet-like and bends freely, the lid can be placed on the side with the pages of the book turned over, which does not interfere with the replacement of batteries or the like.

[Brief description of drawings]

1 is a cross-sectional view of a hinged lid of the present invention.

FIG. 2 is a schematic rear view of the desk calculator.

FIG. 3 is an explanatory view showing a state when the hinged lid of the present invention is opened.

[Explanation of symbols]

1 Hinged lid 2 Lid body 3 Hinge part 4 battery case 5 Battery case hook 6 recess 7 Lid hook 8 hinge storage space 9 stopper 10 Convex part of battery case 11 Desktop calculator

─────────────────────────────────────────────────── --Continued front page (56) Reference JP-A-2-80776 (JP, A) Actually open 4-48156 (JP, U) Actually open 50-112546 (JP, U) US Patent 4471881 (US) , A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65D 55/16 A45C 11/00 H05K 5/03

Claims (6)

(57) [Claims] 1. A hinged lid for covering an opening of a case attached to an electric appliance, wherein a sheet-shaped hinge portion extends from one end of a thick-walled lid body, and the lid body and the sheet-shaped hinge. Part is formed integrally with a thermoplastic elastomer, and at the tip of the sheet-like hinge part,
The hinge storage space provided in the case.
Stopper that locks on the convex part of the case when pulled out from
-Hinged lid characterized by being provided with Wherein said lid body, hinged lid according to claim 1, wherein a locking portion for locking the hook and / or the recess of the case is provided. Wherein the thickness of said lid body is 1 to 10 mm, hinged lid according to claim 1, wherein the thickness of said hinge portion is 0.05 to 1 mm. 4. The hinged lid of claim 1, wherein the thermoplastic elastomer is a polyester elastomer. 5. The hardness of the thermoplastic elastomer is a Shore hardness of 47D to 72D.
The hinged lid according to 4 . 6. The hinged lid according to claim 1, wherein the hinged lid is a dry battery case or a small battery case.