JP4338007B2 - Lid opening / closing mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lid opening / closing mechanism.
[0002]
[Prior art]
As a lid opening / closing mechanism, for example, there is a lid provided on the upper surface of a main body such as a container main body so that the lid can be locked in a closed state, and is always urged in the opening direction to A device is known that is configured to automatically open when the body is unlocked. In the conventional opening / closing mechanism of this type, a torsion spring or the like is attached to a shaft attachment portion of the lid body, and the lid body is always urged in the opening direction.
[0003]
[Problems to be solved by the invention]
A torsion spring or the like is fine as a member, and its assembling operation is troublesome. Further, since it is generally made of metal, it is inconvenient when it is used for a lid opening / closing mechanism composed of a synthetic resin container body, a lid body, or the like, in the case of disposal with a recent separation process.
[0004]
The present invention has been made in view of the above points, and can urge the lid in the opening direction with an extremely simple structure, does not use metal, does not require separation processing, and is easy to assemble. In addition, the present invention proposes a lid opening / closing mechanism capable of exerting a sufficient urging force in the opening direction.
[0005]
[Means for Solving the Problems]
The first means is configured as follows. That is, a lid opening / closing mechanism provided with a lid 3 on the upper surface of the main body 2 that can be opened and closed and can be locked in a closed state, and is provided with a biasing means 4 that biases the lid 3 in the opening direction. The biasing means 4 connects one end of the flexible and elastic elastic plate 5 to the upper surface of the rear part of the main body 2, connects the other end to the lower surface of the rear part of the lid body, and curves the intermediate part in an elastically deformed state. The lid was urged in the opening direction .
[0006]
The second means is configured as follows. That is, in the first means, the elastic plate 5 is provided with a plurality of slits 21 extending from the main body 2 side end to the lid 3 side end .
[0007]
The third means was configured as follows. That is, in the second means, the elastic plate 5 has one end fitted on the upper surface of the rear part of the main body 2 through the concave and convex engaging means, and the other end is fitted through the concave and convex engaging means. 3 Ru elastic plate 5 der made by connecting each by fitted to the rear lower surface.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0009]
As shown in the drawings, the lid opening / closing mechanism A according to the present invention is provided with a lid 3 that can be opened and closed on the main body 2 and can be locked in a closed state, and the lid 3 is biased in the opening direction. Force means 4 is provided. Therefore, when the locking of the lid 3 is released, the lid is automatically opened by the action of the urging means 4. The main body 2 and the lid 3 are made of synthetic resin or the like, and can take various forms as long as they have the above requirements.
[0010]
Various means can be employed as means for locking the main body 2 in the closed state of the lid 3, and a fitting tube projecting from the lid 3 is fitted into a recess on the main body as shown in the illustrated example. Or a means for fitting a cylinder projecting from both sides, a means for engaging one hook over the other engaging projection, and a means for locking the lid, and other conventionally used. The locking means can be employed. In this case, as a means for releasing the lock, a publicly known means such as a method of releasing the engagement portion by opening the lid with the user's finger or a release of the engagement portion via a push button or the like is adopted. Can do.
[0011]
In the present invention, as shown in the drawing, the urging means 4 connects one end of the elastic plate 5 to the upper surface of the rear part of the main body 2, connects the other end to the lower surface of the rear part of the lid 3, and The lid 3 is urged in the opening direction by being bent in an elastically deformed state.
[0012]
The elastic plate 5 is a plate-like material formed of a flexible and elastic material such as an elastomer, and can be variously used as its connecting means. As shown in the drawing, one end is connected to the main body via the concave-convex engaging means. 2 While being fitted to the upper surface of the rear part, the other end can be fitted and connected to the lower surface of the lid 3 via the concave and convex engaging means. Moreover, not only this but various means, such as adhesion | attachment by an adhesive material or these combined use, can be taken.
[0013]
As the concavo-convex engaging means, as shown in the illustrated example, in addition to a method in which a locking protrusion protruding from one side is fitted and fixed to the other fitting hole or fitting hole, both the protrusions are engaged with each other. It means that the concave and convex portions can be engaged and fixed by pressing.
[0014]
Hereinafter, the illustrated example will be described in detail. In the illustrated example, the main body 2 has a box shape with a bottom, and a top wall 7 extending from the upper edge of the peripheral wall 6 is provided with a first recess 8 for fitting a lid body having a quadrangular shape in plan view. In the first recess 8, a second recess 9 having an elliptical shape in plan view for tightly fitting a fitting cylinder (described later) of the lid 3 is provided, and an outlet 10 is provided in the second recess. It is drilled. Further, the first recess 8 is provided with a rectangular projecting portion extending to the rear end edge at the center of the rear end, and a third recess 11 for attaching an elastic plate having a horizontally long rectangular shape in plan view is provided in the projecting portion. .
[0015]
The lid 3 has a top wall 13 extending from the upper end edge of the peripheral wall 12 fitted in the first recess 8, and a fitting cylinder 14 is provided inwardly at a predetermined distance from the peripheral wall 12. The fitting cylinder is closely fitted to the inner peripheral surface of the second recess 9 so that the closed state can be maintained against the urging force of the elastic plate 5 in the opening direction. Further, an attachment plate 15 for attaching an elastic plate extends from the rear upper end of the peripheral wall 12 to the rear, and side plates 16 are suspended from both side edges thereof.
[0016]
The elastic plate 5 is fitted at one end edge portion with the tip portion in the third recess 11 and fitted with a locking projection 17 projecting from both sides of the lower surface into a fitting hole 18 provided in the inner bottom surface of the third recess 11. The other end is connected to the lid 3 by fitting the engaging projection 20 suspended from the mounting plate 15 into the fitting hole 19 formed in the other end. Further, in the illustrated example, a plurality of slits 21 extending from the main body 2 side end of the elastic plate 5 to the lid end side are formed.
[0017]
In the lid opening / closing mechanism as described above, when the engagement between the fitting cylinder 14 and the second recess 9 is released from the state of FIG. 2, the lid 3 is opened by the elastic restoring force of the elastic plate 5. When the lid 3 is closed, the top wall 13 is pushed to engage the fitting cylinder 14 with the second recess 9.
[0018]
【The invention's effect】
As described above, since the lid opening / closing mechanism of the present invention is configured as described above, it can sufficiently exert the urging force in the opening direction of the lid with a very simple structure, and the main body 2 and the lid 3. In the case of a synthetic resin, since it is not necessary to use a metal spring or the like as in the conventional product, it is not necessary to consider a separation process between the synthetic resin and the metal.
[0019]
Further, the lid opening / closing mechanism of the second means uses the elastic plate 5 provided with a plurality of slits 21 extending from the main body 2 side end portion to the lid body 3 side end portion, thereby preventing stress concentration. Thus, the durability of the elastic plate 5 is enhanced, and as a result, the durability of the opening / closing mechanism is enhanced.
[0020]
Further, the lid opening / closing mechanism of the third means has one end portion fitted to the upper surface of the rear portion of the main body 2 through the concave and convex engaging means, and the other end portion is attached to the lower surface of the rear portion of the lid body 3 through the concave and convex engaging means. Since the elastic plates 5 that are fitted and connected to each other are used, it is very easy to attach the elastic plate 5 to the main body 2 and the lid 3, and as a result, the entire assembling operation is extremely easy. Have both.
[Brief description of the drawings]
FIG. 1 is a perspective view of an essential part showing an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of a main part of the same embodiment.
FIG. 3 is a longitudinal sectional view of an essential part of the embodiment in the opened state.
FIG. 4 is a perspective view showing an elastic plate in the same embodiment.
FIG. 5 is a perspective view showing the elastic plate in a bent state in the embodiment.
[Explanation of symbols]
2 ... Body, 3 ... Cover, 4 ... Biasing means, 5 ... Elastic material, 21 ... Slit

Claims (2)

A lid opening / closing mechanism provided with a lid 3 on the upper surface of the main body 2 so as to be able to be opened and closed and locked in a closed state, and provided with a biasing means 4 for biasing the lid 3 in the opening direction, The biasing means 4 connects one end of the flexible and elastic elastic plate 5 to the upper surface of the rear part of the main body 2, connects the other end to the lower surface of the rear part of the lid body, and curves the intermediate part in an elastically deformed state. A lid opening / closing mechanism characterized in that the lid is urged in the opening direction, and the elastic plate 5 is provided with a plurality of slits 21 extending from the main body 2 side end to the lid 3 side end . The elastic plate 5 has one end portion fitted to the upper surface of the rear portion of the main body 2 through the concave-convex engaging means, and the other end portion fitted to the lower surface of the rear portion of the lid body 3 through the concave-convex engaging means. The lid opening / closing mechanism according to claim 1, wherein the lid is an elastic plate.

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