JPH08110152A - Hinge device for container - Google Patents

Abstract

PURPOSE: To attach a hinge device for attaching a lid to the container main body in a freely operable manner, so as not to come off in use but easily come off when it is not in use. CONSTITUTION: A main body side hinge piece 11 is inserted detachable into a hinge receiving member 7 and an elastic lock pawl 16 provided on the main body side hinge piece 11 is engaged with the hinge receiving member 7 at all times to release locking by retreating the lock pawl 16 by the reverse twisting effect of a torsion spring 12 when a lid body 2 is opened by a given opening angle or more.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge device for a container, which is used, for example, as an opening / closing device for a lid of a portable cold / hot refrigerator.

[0002]

2. Description of the Related Art In a portable cold storage box, a heat insulating lid body (hereinafter referred to as a unit mounting lid body) equipped with a thermoelectric unit is used so that it can be used as an ordinary cold storage cabinet when power is not available outdoors. In addition to the above), a normal heat insulating lid body (hereinafter, referred to as a normal lid body) not equipped with such a unit is provided, and both are appropriately replaced and attached.

In this case, for convenience of opening and closing the lid,
The lid is attached to the container body by a hinge device.

[0004]

However, when the hinge device is used, there is the inconvenience that the lid cannot be replaced quickly. Therefore, the hinge piece of the hinge device is simply inserted into the receiving member on the main body side. May be configured. This structure has a merit that the cost is low because it is simple, but it may come off at any time when it is not necessary.

There is also a lock mechanism provided to prevent the hinge device from coming off easily, and a lock release button or the like is operated from the outside to release the lock, and then the hinge device is removed. Is complicated and the configuration becomes complicated.

Therefore, an object of the present invention is to provide a simple hinge device which does not come off during normal use and easily comes off when necessary.

[0007]

To achieve the above object, the present invention provides a hinge device for opening and closing a lid body on a container body, wherein the lid side hinge piece is attached to the body side hinge piece via a torsion spring. The hinge piece is rotatably connected by a hinge pin, and an elastic lock claw is formed on one side of the spring piece provided on the hinge piece on the main body side, and a lock release claw is formed on the other side, and the fixed end of the torsion spring is unlocked. To store the working end of the torsion spring between the lid side hinge piece and the lid body, and attach the lid side hinge piece to the lid body to form a lid side hinge device. The main body side hinge piece is removably inserted into the hinge receiving member provided on the container body to engage the elastic lock claw with the hinge receiving member, and the torsion spring is applied when the lid body is opened beyond a certain opening angle. Reverse twisting to Pushed open the fixed end Te, thereby it is obtained by a configuration to unlock.

[0008]

In the above hinge device, the lock claw normally engages the receiving member and is in the locked state, so that the hinge device does not come off, and the lid body is closed by its own weight. When the lid is opened wider than a certain opening angle, the torsion spring goes beyond the natural state and the reverse torsion action works. Due to its reverse twisting action,
The fixed end of the torsion spring is expanded, and the lock claw integrated with the lock claw engaged with this is retracted. As a result, the lock is released, the hinge device is released, and the lid can be removed from the container body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The hinge device of the embodiment shown in the accompanying drawings is
This is the case when applied to an electronic cold storage. As shown in FIG. 1, this electronic cold storage is composed of a combination of a heat insulating container body 1, a unit mounting lid body 2 and a normal lid body 3, and a handle 4 is rotatably attached to the container body 1. .

The hinge device 5 for mounting the unit mounting lid 2 on the container body 1 comprises a pair of hinge receiving members 7 mounted on the outer surface of the opening of the container body 1 with screws 6 (see FIG. 2) and the lid. It is composed of a lid side hinge piece 8 attached to the body 2, a main body side hinge piece 11 which is inserted into the vertical rectangular hole 9 of the hinge receiving member 7 without rattling, and a torsion spring 12.

The lid side hinge piece 8 and the main body side hinge piece 1 described above.
1 are connected by a hinge pin 14 inserted into each bearing portion 13, 13. Further, a spring piece 15 having two left and right sides and three lower sides surrounded by through grooves is provided in a central portion of the main body side hinge piece 11, and an outward lock claw 16 is provided at a lower end of the spring side 15 (see FIG. 3). And an inward unlocking claw 17 are provided. The spring piece 15 is formed of a material integral with the main body side hinge piece 11, and exhibits elasticity inward and outward due to the property of the material itself. In a natural state where no elasticity is exerted, the lock claw 16 is engaged with the engagement hole 18 of the hinge receiving member 7.
To be in a locked state (see FIG. 4 (a)).

As shown in FIG. 2, the torsion spring 12 has two twisted portions 19, and both ends of the wire extending from one end of each twisted portion 19 are used as working ends 21 and the lid side hinge piece 8 is formed. The unit mounting lid 2 is engaged with the inner surface of the unit.
The working end 21 is pressed between it and the end face.

The fixed end 22 forming the connecting portion between the twisted portions 19 extends along the inner surface of the main body side hinge piece 11 and is engaged with the inside of the lock releasing claw 17 (FIG. 2).
reference).

As shown in FIG. 4 (b), the torsion spring 12 described above is in a natural state when the working end 21 and the fixed end 22 have an opening angle of approximately 90 degrees (indicated by α in the drawing). Therefore, the twisting action is not exerted on the twisting portion 19. When the opening angle becomes larger than this (the opening angle of the lid body 2 becomes smaller conversely), the twisting action works (see FIG. 4 (a)), and conversely the opening angle becomes a certain angle α _1. When it becomes smaller (the opening angle of the lid body 2 becomes larger conversely), the reverse twisting action (screw portion 1
The action of untwisting 9) works.

Locking protrusions 23 are provided on both sides of the hinge receiving member 7. As shown in FIG.
3 is engaged with the locking piece 24 of the usual lid body 3, and the lid body 3
Can be hung on the side surface of the container body 1.

A locking piece 24 is provided on the inner surface of the ordinary lid 3.
A pair of hinge devices 5'is attached so as to face the position of. In this case, the hinge receiving member 7 of the hinge device 5'is
It also serves as the hinge receiving member 7 of the hinge device 5 of the unit mounting lid 2.

As shown in FIG. 5, the hinge device 5'of the ordinary lid body 3 connects the lid side hinge piece 8'and the main body side hinge piece 11 'with the hinge pin 14 as in the above-mentioned hinge device 5. However, the torsion spring and the lock mechanism are omitted. The reason why the torsion spring is omitted is that the ordinary lid body 3 is relatively light in weight, so that the cushioning action is unnecessary.

The hinge device of the embodiment is as described above, and when the unit mounting lid 2 is attached to the container body 1 as shown in FIG. 1, the weight of the lid 2 is the torsional action of the torsion spring 12. The spring force is overcome and the valve is closed (see FIG. 4A). When the lid body 2 is opened from this state, the lid body 2 is lightly opened by the above-mentioned spring force.

When the opening angle of the lid body 2 becomes larger than the natural opening angle α of the torsion spring 12 (see FIG. 4 (b)) by an angle α ₁ , the reverse twisting action acts and the fixed end 22 side has the angle α. Only ₂ pushes inward. At this time, the fixed end 22 engages with the lock release claw 17 and moves backward while bending the spring piece 15, so that the lock claw 16 is disengaged from the engagement hole 18 and the lock is released.

Therefore, when the lid 2 is pulled up from this state, the main body side hinge piece 11 is pulled out from the hinge receiving member 7, so that the lid 2 can be removed from the container main body 1. After that, a normal lid 3 is attached if necessary.

On the contrary, when the unit mounting lid 2 is attached to the container body 1, the body side hinge piece 11 is inserted into the square hole 9 of the hinge receiving member 7. Then, the lock claw 16 bends the spring piece 15 and retracts, and when the lock piece 16 matches the engagement hole 18, the spring piece 15 is engaged by its elasticity to be in a locked state.

When the lid 2 in the open state is closed, it is buffered by the action of the torsion spring 12 and is closed while being decelerated.

Although the above embodiment shows the case where the hinge device is used for the unit mounting lid, the hinge device of the present invention can be applied to various lids other than this.

[0024]

Since the present invention is as described above, the hinge device will not come off unless the lid body is opened wide more than a certain amount. Therefore, it does not come off in a normal use condition, and the lid body is replaced. If it is necessary to remove it, it can be easily removed by simply opening it a certain amount or more.

Further, since the hinge device is unlocked by using a torsion spring for cushioning the lid, there is an advantage that no special part is required for unlocking.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an insulating container according to an embodiment.

FIG. 2 is an exploded perspective view of the above hinge device.

FIG. 3 is an exploded perspective view of the above hinge device.

FIG. 4A is a cross-sectional view of the hinge device of the above hinge device in a closed state. FIG. 4B is a cross-sectional view of the hinge device of the same hinge device in an open state.

FIG. 5 is an exploded perspective view of a hinge device for a normal lid body.

[Explanation of symbols]

 1 Container Main Body 2 Unit-Mounted Lid 3 Normal Lid 4 Handle 5, 5'Hinge Device 6 Screw 7 Hinge Receiving Member 8, 8 'Lid Side Hinge Piece 9 Square Hole 11, 11' Body Side Hinge Piece 12 Torsion Spring 13 Bearing part 14 Hinge pin 15 Spring piece 16 Lock claw 17 Lock release claw 18 Engagement hole 19 Twisted part 21 Working end 22 Fixed end 23 Locking protrusion 24 Locking piece

Claims (1)

[Claims] 1. A hinge device for mounting a lid on a container body so as to be openable and closable, wherein the lid-side hinge piece is rotatably coupled to the body-side hinge piece by a hinge pin via a torsion spring, and is attached to the body-side hinge piece. An elastic lock claw is formed on one surface of the provided spring piece and a lock release claw is formed on the other surface, and the fixed end of the torsion spring is housed inside the lock release claw, and the working end of the torsion spring is covered by the lid. The hinge piece is housed between the side hinge piece and the lid body, and the lid side hinge piece is attached to the lid body to form a lid side hinge device, and the main body side hinge piece is attached to a hinge receiving member provided in the container body. Removably inserted to engage the elastic lock claw with the hinge receiving member,
A hinge device for a container, characterized in that, when the lid is opened beyond a certain opening angle, a reverse twisting action is given to the torsion spring to push and expand its fixed end, thereby releasing the lock.