JP3775566B2 - Lid fixing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lid fixing device attached to a case main body by a butterfly plate so as to be opened and closed, and more particularly to a device for preventing the lid from being opened.
[0002]
[Prior art]
For example, in a small device using a battery as a power source, the battery is housed in a housing chamber that can be sealed by a lid that can be opened and closed so that the battery can be replaced.
However, when the apparatus main body falls, the lid is opened by impact, the battery pops out of the storage chamber, and when it contacts the conductor, a spark discharge occurs due to a short circuit and becomes a source of ignition.
[0003]
[Problems to be solved by the invention]
In order to solve such a problem, it may be possible to fix the lid to the main body with a screw, but there is a problem that the operation is troublesome because a tool or a coin is required for attachment and detachment.
The present invention has been made in view of such a problem, and an object of the present invention is to provide a lid that can be opened and closed without the need of a tool or the like, and can reliably prevent the contents from popping out. It is to provide a body fixation device .
[0004]
[Means for Solving the Problems]
In order to solve such a problem, in the present invention, in the lid fixing device attached to the case main body so that one end of the case is rotatable, a key-shaped fixture is provided on the other end of the lid. A protrusion that is pivotably attached to the main body, and that controls the rotation of the lid in contact with the case main body so as to maintain the state where the lid floats from the case main body and faces the fixture. Is detachably mounted on the fixture, and a projecting surface is formed on the case main body in the vicinity of the pivoting fulcrum of the fixture, and the protrusion is configured to abut against the projecting surface when rotation is prevented . .
[0005]
[Action]
The projection is prevented from rotating until the lid is fully opened, and the projection is pulled out to limit the rotation angle of the lid.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Therefore, details of the present invention will be described below based on the illustrated embodiment.
FIG. 1 (a) shows an embodiment of a case to which the lid fixing device of the present invention is applied. The lid 1 is attached to the case main body 2 by a hinge 3 so as to be rotatable. The end is fixed to the case body 2 by the fixture 4 of the present invention.
[0007]
The fixture 4 is formed in a bowl shape so as to have a main body portion 5 parallel to the side wall 2a of the case main body 2 and an overhang portion 6 parallel to the lid body 1, and both sides of one end portion of the main body portion are hinged. 7 (FIG. 2) is attached to the case main body 2 so as to be rotatable, and is configured such that the key portion 6a at the tip of the overhang portion 6 and the concave portion 1a of the lid body 1 are engaged.
[0008]
A protrusion 8 that can be inserted and removed is attached to the lower end of the main body 5 as shown in FIG. 1B. The protrusion 8 and the side wall 2a of the case main body 2, more specifically, substantially perpendicular to the side wall 2a. It is configured to regulate the rotation angle of the fixture 4 in contact with the protruding projecting surface 2b.
[0009]
In this embodiment, with the lid 1 closed, the lid 1 is fixed by the fixture 4 and the protrusion 8 is inserted. In this state, as shown in FIG. 2 (a), the lid body 1 is not expanded beyond the state in which the key portion 6a of the fixture 4 is engaged with the concave portion 1a, so that it is not opened by an impact. .
[0010]
On the other hand, a large force is applied to the lid body 1 by an impact or the like so that the fixture 4 cannot resist the rotation of the lid body 1 and the lock between the key portion 6a and the concave portion 1a is released, as shown in FIG. As described above, when the projection body 8 is rotated outward, the protrusion 8 abuts against the side wall 2 a of the case body 2. Thereby, the rotation angle of the fixture 4 is limited, the state where the tip of the overhanging portion 6 is opposed to the lid body 1 is maintained, and the lid body 1 is prevented from opening.
[0011]
When the lid 1 is opened in order to correct the disturbance of the contents due to the impact, the lid 1 can be opened by pulling out the protrusion 8 and rotating the fixture 4 to the maximum extent. After the arrangement of the contents is completed and the lid 1 is closed, the fixture 4 is rotated to the lid 1 side to engage the key portion 6a with the recess 1a, and finally the protrusion 8 is attached.
[0012]
FIG. 3 shows another embodiment of the fixture. In this embodiment, the protrusion 10 is formed in a rectangular parallelepiped shape, and convex portions 11 and claw portions 12 are formed on both sides thereof. A concave portion 13 and a key portion 14 are formed in the main body portion 5 of the fixture 4 so as to engage with them. Thereby, the convex part 11 and the claw part 12 of the protrusion 10 can be attached to and detached from the concave part 13 and the key part 14 of the protrusion.
[0013]
In this embodiment, with the lid 1 closed, the lid 1 is fixed by the fixture 4 and the protrusion 10 is inserted. In this state, the lid 1 is not opened more than the state in which the key portion 6a of the fixture 4 is engaged with the concave portion 1a as in the above-described embodiment, so that it is not opened even when receiving an impact. .
[0014]
Since the contact area with the case body 2 is large, it is possible to more reliably prevent the lid 1 from being opened due to an impact, and the protrusion 10 is engaged in the vicinity of both ends in the longitudinal direction of the fixture 4. Therefore, shortening of the distance between the rotating shafts due to elastic deformation of the fixture 4 due to external force such as impact is prevented as much as possible, and the fixture 4 itself is prevented from being detached from the case body 2.
The
[0015]
In the above-described embodiment, the protrusions 10 are formed on the projections 10 and the recesses 13 are formed on the fixture side so as to ensure a large rotation angle of the fixtures 4. If the protrusion 10 can be opened, a concave portion is formed on the protrusion 10 and a convex portion is formed on the fixture side, so that the same effect can be obtained.
[0016]
【The invention's effect】
As described above, according to the present invention, the protrusion is prevented from rotating until the cover is fully opened, and the rotation angle of the cover is eliminated by a simple operation of pulling out the protrusion. It can be made openable.
[Brief description of the drawings]
FIGS. 1A and 1B are an example of a case using a fixing device of the present invention and an enlarged view of a fixing tool, respectively.
[2] Figure (a), (b) is a diagram showing the respective ibid fixing device, a state where the lid is sealed properly, the state in which block the opening by the impact.
FIGS. 3A and 3B are diagrams showing another embodiment of the case using the fixing device of the present invention and a fixing tool, respectively.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cover 1a Recessed part 2 Case main body 2a Side wall 2b Projection surface 3 Hinge 4 Fixing tool 5 Main body part 6 Overhang part 6a Key part 7 Hinge 8 Projection body

Claims (2)

In the lid fixing device , one end of which is rotatably attached to the case body,
A key-shaped fixture is pivotally attached to the case body on the other end side of the lid body, and the lid body is lifted from the case body and maintains a state of facing the fixture. A protrusion that contacts and regulates the rotation of the lid in contact with the case body is detachably attached to the fixture, and a protruding surface is formed on the case body in the vicinity of the rotation fulcrum of the fixture to prevent rotation. A lid fixing device configured such that the protrusion sometimes abuts against the protruding surface . 2. The protrusion is formed in a substantially rectangular parallelepiped shape, and is formed by forming a convex portion for engagement on a surface facing the fixture and a concave portion for engaging the convex portion on the fixture. The lid fixing device according to claim 1 .

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