JPH0417495Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sealed container, and more specifically to a container such as a lunch box in which a main body member and a lid member are sealed via a gasket.

[Conventional technology and its problems]

BACKGROUND ART Conventionally, containers have been commercialized in which a gasket is interposed between a main body member and a lid member, and the gasket is crimped onto the gasket using a hook device to seal the container. However, there is a problem in that when hot food is put into the container and the container is sealed and the food is cooled, the pressure inside the container decreases, making it difficult to remove the lid member.

[Purpose of invention]

The present invention was developed in view of the above problem, and when the rotary lock member is rotated to the locking position, the main body member and the lid member are crimped and a seal is formed, while the rotary lock member is unlocked. It is an object of the present invention to provide a container in which a main body member and a lid member are separated from each other against negative pressure within the container when rotated to a position, and the lid member can be easily removed.

Furthermore, the present invention has one of the two rotary lock members in the locked position and the other in the unlocked position, so that even when the lid member is in a half-open state centered on the rotary lock member in the locked position, the cam groove An object of the present invention is to provide a container in which a protrusion that engages with the container is not bent and damaged.

[Structure of the present invention]

The present invention has the following structural features to achieve the above object. That is, the present invention provides a sealed container in which a gasket is interposed between a main body member and a lid member, in which protruding shafts are provided at two opposing positions on the sides of either the main body member or the lid member. The rotation lock member is pivotally supported by the rotation lock member, and a protrusion is provided on the side of the other member at a position perpendicular to the protrusion shaft when the lid member is engaged with the main body member, and further, the rotation lock member is A cam groove consisting of a continuous outer cam part and a continuous inner cam part is provided in the locking member,
When one rotary lock member is in the locked position and the other rotary lock member is in the unlocked position, the continuous outer cam part rotates to a predetermined angle around the rotary lock member in the locked position. It has a recessed cam surface portion that is recessed to the extent that the protrusion does not come into contact with it even when opened, and a convex cam surface portion that widens the distance between the protrusion shaft and the protrusion when the rotation locking member is in the unlocked position. The continuous inner cam portion has a convex cam surface portion that narrows the distance between the protruding shaft and the protrusion when the rotation locking member is in the locked position, and a convex cam surface portion that narrows the distance between the protrusion and the protrusion when the rotation locking member is in the unlocked position. A sealed container characterized by having a relief cam surface portion that does not engage.

〔Example〕

Examples of the present invention will be described below. As shown in FIGS. 1 and 2, the container 1 includes a main body member 2, a lid member 4, and a rotation lock member 6 pivotally supported by the lid member 4. The main body member 2 has horizontally extending cylindrical protrusions 8 at two opposing locations on its outer side wall.

The lid member 4 has a downward groove 10 on the lower surface of its periphery.
The groove 10 is filled with a gasket 12. Projecting shafts 14 are provided at two locations on the outside of the side wall portion of the lid member 4 and above the projection 8 when the lid member 4 is engaged with the main body member 2.

A shaft hole 16 of the rotation lock member 6 is fitted into the protrusion shaft 14, and a protrusion 8 is fitted into the rotation lock member 6.
A cam groove 20 is provided in which the cam groove 20 is engaged. The cam groove 20 consists of a continuous outer cam part 34 and a continuous inner cam part 40. The continuous outer cam portion 34 engages the protrusion 8 when the rotation locking member 6 is in the locked position shown in FIG.
and the escape cam surface portion 30 separated by a distance D from the
and a convex cam surface portion 32 that abuts the protrusion 8 and separates the protrusion shaft 14 and the protrusion 8 to open the lid member 4 when in the unlocked position shown in FIG. When the rotation locking member 6 is in the locking position, the continuous inner cam portion 40 contacts the protruding portion 8 and brings the protruding shaft 14 and the protruding portion 8 closer together to create a seal between the main body member 2 and the lid member 4. It consists of a convex cam surface part 36 that forms a relationship, and an escape cam surface part 38 that does not come into contact with the protrusion 8 when in the unlocked position. The convex cam surface portion 36 has
A click recess 42 is provided if desired.

In the above configuration, when the lid member 4 is engaged with the main body member 2 and the rotation lock member 6 is rotated to the locking position shown in FIG.
The convex cam surface portion 36 of 0 comes into contact, the protruding shaft 14 and the protruding portion 8 are brought closer together, and a sealing relationship is established between the main body member 2 and the lid member 4. Here, if the click concave portion 42 is provided in the convex cam surface portion 36,
The protrusion 8 falls into the click part 42, and the rotation of the rotary lock member 6 in the locking position is prevented by a certain amount of click force.

Next, when the rotation lock member 6 is rotated against the friction force or click force between the protrusion 8 and the convex cam surface 36 to the unlocked position shown in FIG. The convex cam surface portion 3 comes into contact with the protruding shaft 14 and the protruding portion 8 to separate them. At this time, for example, even if negative pressure is generated in the container 1 due to cooling of the food,
Due to the lever action and wedge action of the rotating lock member 6, the projecting shaft 14 and the projecting portion 8 can be separated with a relatively small force, and the lid member 4 can be lifted from the main body member 2.

By the way, when only one rotary lock member 6 is rotated from the state in which the two rotary lock members 6 are in the locked position to the unlocked position, the lid member 4 moves the other rotary lock member 6 to the protrusion 8. While it is still locked, move the fifth
It opens on one side as shown in the figure. At this time, the rotation locking member 6 in the locking position is tilted as shown in FIG. 5 while maintaining the engagement between the convex cam surface 36 of the continuous inner cam section 40 and the protrusion 8, but the escape cam surface 30 and the protrusion 8, there is a distance D shown in FIG.
, the cam groove 20 will not damage the protrusion 8.

[Effect of idea]

In the present invention described above, the body member and the lid member can be easily sealed and opened and separated by rotating the rotary lock member, and in particular, one rotary lock member can be set to the unlocked position. Even when the other rotary lock member is placed in the locking position and the lid member is left in a half-open state, the protrusion of the rotary lock member that engages with the cam groove provided therein will not be damaged.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a container according to an embodiment of the present invention;
is a side view of the container shown in FIG. 1, FIGS. 3 and 4 are cross-sectional views taken along the line - in FIG.
The figure shows the rotating lock member in the locked position, Figure 4 shows the rotating lock member in the unlocked position, and Figure 5 is a sectional view of the container with the lid half open. . 1... Container, 2... Main body member, 4... Lid member,
6...Rotation lock member, 8...Protrusion, 12...
Packing, 14...Protruding shaft, 16...Shaft hole, 20
...Cam groove, 30... Relief cam surface portion, 32... Convex cam surface portion, 34... Continuous outer cam portion, 36... Convex cam surface portion, 38... Relief cam surface portion, 40... Continuous inner cam portion 42... ...Click recess.

Claims (1)

[Claims for Utility Model Registration] In a sealed container in which a gasket is interposed between the main body member and the lid member, protruding shafts are provided at two opposing positions on either side of the main body member or the lid member. , thereby pivotally supporting the rotation lock member, and providing a protrusion on the side of the other member at a position perpendicular to the protrusion shaft when the lid member is engaged with the main body member; The rotary lock member is provided with a cam groove consisting of a continuous outer cam portion and a continuous inner cam portion, and the continuous outer cam portion has one rotary lock member in a locked position and the other rotary lock member in an unlocked position. At some point, when the lid member is opened to a predetermined angle around the rotary lock member in the locked position, the relief cam surface portion is recessed to such an extent that the protrusion does not come into contact with the rotary lock member, and the rotary lock member is in the unlocked position. The continuous inner cam part has a convex cam surface portion that widens the distance between the projecting shaft and the projecting portion when the rotating lock member is in the locking position. A sealed container comprising a convex cam surface portion and a relief cam surface portion that does not engage with the protrusion when the rotation locking member is in the unlocked position.