JP4218784B2 - 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, there is a lid body that can be opened and closed on the upper surface of the main body of a container body or the like. The lid body is configured to be able to be locked in a closed state, and is always urged in the opening direction to open the lid body. There is known a configuration in which the lid is automatically opened when the lock is released. These are often used in, for example, wet tissue containers, etc., but as a biasing means of the lid in this type of conventional opening / closing mechanism, a means for attaching a torsion spring or the like to the axially attached portion of the lid Is generally adopted.
[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 comprising a biasing means 4 for constantly biasing the lid 3 provided on the upper surface of the main body 2 so as to be able to be opened and closed and locked in the closed state. The biasing means 4 covers the first annular locking portion 5 in a stretched state between the first locking portion 5 at the rear of the lid body and the second locking portion 6 at the upper part of the main body in front thereof. The body 3 was always urged in the opening direction .
[0006]
The second means is configured as follows. That is, in the first means, the first locking portion 5 protrudes from the rear portion of the lid 3 between a pair of pivoting projections 8 that protrude from the rear portion of the lid 3 and pivotally attach to the rear portion of the main body. And a pair of locking step portions 11 recessed at predetermined positions on both sides of the hollow protrusion 10 on the inner surface of the hollow protrusion 10 having both ends open on the cover plate 9 that can be partially opened and closed. It is the inner surface identifying the said second engaging portion 6, Ru top wall 13 backside der positioned between a pair of kerfs 14 which is formed in the rear edge of the main body upper end opening 12.
[0007]
The third means was configured as follows. That is, in the second means, the hollow projection 10 has an upper plate 28 projecting from the upper rear surface of the lid 3, a rear plate 29 suspended from the rear edge of the upper plate, A lower plate 31 extending forward from the edge through the refracting portion 30, and a fitting plate 32 extending upward from the front edge of the lower plate 31 and fitted to the rear surface of the lid, and the lower plate 31 is ing configured as a cover plate 9.
[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 a biasing means 4 for constantly biasing the lid body 3 that can be opened and closed on the main body 2 and can be locked in the closed state. It has. 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 adopted as means for locking the main body 2 in the closed state of the lid 3, and a locking plate protruding from one side as shown in the example of the drawing is slidably fitted to the other peripheral wall. Means, or means for fitting a cylinder projecting from both sides (not shown), or means for locking the lid by engaging one hook over the other locking projection In addition, other conventionally used locking means can be employed. As a means for releasing the lock in that case, a method of releasing the engaging portion by holding the finger hooking projection with the user's finger and opening the lid, releasing the engaging portion via a push button, etc. Known means can be employed.
[0011]
In the present invention, the biasing means 4 extends the elastic annular body 7 between the first locking portion 5 at the rear of the lid 3 and the second locking portion 6 at the top of the main body 2 in front of the lid 3. The lid body 3 is always urged in the opening direction by being hung over by. The annular body 7 is formed of a material having high elasticity such as an elastomer. Specifically, a rubber band, an O-ring or the like can be used.
[0012]
The first locking portion 5 and the second locking portion 6 can lock the extended annular body 7 respectively, and can be in a position and shape that can always bias the lid 3 in the opening direction. Various forms can be adopted. In the illustrated example, both sides of the lid plate 9 project from the rear of the lid 3 and project from the rear of the lid between a pair of pivot projections 8 pivotally attached to the rear of the main body, and a part of the lid 9 can be opened and closed. The inner surface of the hollow protrusion 10 having an opening at the end face and the position of the inner surface whose position is specified by a pair of locking step portions 11 recessed at predetermined positions on both sides of the hollow protrusion 10 is defined as the first engagement portion 5. 2 The back surface of the top wall 13 positioned between the pair of kerfs 14 formed in the rear edge of the upper end opening 12 is used as the second locking portion 6.
[0013]
In this case, the locking step portions 11 are provided on both sides of the rear end of the lid plate 9. However, the present invention is not limited to this, and the extended annular body can be locked, and the lid body 3 can always be urged in the opening direction. Any position can be used. Further, a position may be set by providing a pair of kerfs at predetermined positions on both sides of the hollow protrusion 10 instead of the locking step portion 11.
[0014]
Hereinafter, the illustrated example will be described in detail. In the illustrated example, the main body 2 has a top wall 13 extending from the upper end edge of the peripheral wall 15 and a bottom wall extending from the lower end edge. Further, a first recess 16 for fitting a push button provided in the center of the front portion of the top wall 13, a second recess 17 for fitting a lid body continuously provided in the center of the top wall 13, and the second A third concave portion 18 is provided that is continuous with the concave portion 17 and is recessed in the center of the rear portion of the top wall 13 and is worn by a lid.
[0015]
A push button 19 is fitted in the first recess 16 so as to be swingable up and down. The push button 19 is provided with a pair of pivot feet (not shown) suspended from both sides of the lower surface of the top plate 20 so as to be pivotable on both sides of the concave portion, and pushes down the front portion of the top plate 20. Thus, the pair of push-up protrusions 21 projecting from the rear portion is configured to move upward. Further, a locking plate 22 for locking the lid body 3 is provided between the push-up protrusions 21 from the front portion of the lid body 3.
[0016]
The second concave portion 17 is a horizontally long rectangular shape, and a central portion is further recessed to form a second lower concave portion 17a. An outlet 12 which is an upper end opening of the main body is formed in the central portion of the second lower concave portion 17a. Yes. In addition, a pair of kerfs 14 are formed at intervals in the rear edge of the outlet 12, and the back surface of the top wall 13 between the kerfs is configured as a second locking portion 6.
[0017]
The third recess 18 has a horizontally long rectangular shape partially overlapping the rear center of the second recess 17 and formed deeper than the second recess 17, and has pivoting holes 23 in the upper portions of both side walls. .
[0018]
The lid body 3 has a top wall 25 extending from the upper end edge of the peripheral wall 24 fitted in the second recess 17, and a pair of pivot attachment protrusions 8 protruding from the rear surface of the peripheral wall 24. A pivot shaft 26 projecting from each outer surface of the pivot projection 8 is pivotally mounted in each pivot hole 23 so as to be opened and closed. Further, a fitting cylinder 27 is suspended from the inner periphery of the peripheral wall 24 at a predetermined interval, and the cylinder is tightly fitted to the inner surface of the second lower recess 17a. Further, the rear center surface of the front portion of the peripheral wall 24 is slidably brought into contact with the locking plate 22 so that the closed state can be maintained against the urging force of the annular body 7 in the opening direction.
[0019]
A hollow protrusion 10 is provided between each pivot protrusion 8. As shown in FIG. 3, the protrusion 10 includes an upper plate 28 protruding from the upper rear surface of the lid 3, a rear plate 29 extending from the rear edge of the upper plate, and a refracting portion 30 from the lower edge of the rear plate 29. A lower plate 31 extending forward and a fitting plate 32 extending upward from the front edge of the lower plate 31 and fitted to the rear surface of the lid, and the lower plate 31 is configured as the lid plate 9. ing. Further, the rear plate 29 is formed narrower than the upper plate 28 and the lower plate 31, and the locking step portion 11 is formed on both sides of the rear end edge portion of the lower plate 31.
[0020]
When the annular body 7 is assembled in the opening / closing mechanism configured as described above, for example, as shown in FIG. 1, the annular body 7 is hung between the respective engaging step portions 11 with the cover plate 9 opened. The rear cover plate 9 that has been handed over is bent and closed at the refracting portion 30, and the fitting plate 32 is fitted to the rear surface of the cover. At this time, as shown in FIG. 1, the fitting plate 32 may be provided with a protrusion 33 so that the fitting of the fitting plate 32 is more difficult to come off. Next, after each pivoting shaft 26 of the lid 3 is fitted and pivoted into each pivoting hole 23 of the main body, the other end of the annular body 7 is spanned over the back surface of the top wall 13 between the grooves 14. Can be assembled. Of course, the assembling means is not limited to this.
[0021]
The case where the lid opening / closing mechanism as described above is used will be described. First, when the front part of the push button 19 is pushed down, the push-up projection 21 pushes up the front part of the cover peripheral wall 24 to disengage the engagement plate 22 and the peripheral wall 24 and disengage the fitting cylinder 27 and the second lower recess 17a. Then, the lid 3 is opened by the elastic restoring force of the annular body 7. When the lid 3 is closed, the top wall 25 is pushed and the locking plate 22, the peripheral wall 24, the fitting cylinder 27 and the second lower recess 17a are engaged again.
[0022]
【The invention's effect】
As described above, since the lid opening / closing mechanism of the first means has the above-described configuration, it can sufficiently exert the urging force in the opening direction of the lid with a very simple structure, and its assembling operation is also extremely difficult. It will be easy. Further, when the main body 2 and the lid 3 are made of a synthetic resin, it is not necessary to use a metal spring or the like as in the conventional product, so there is no need to consider a separation process between the synthetic resin and the metal.
[0023]
The lid opening / closing mechanism of the second means can attach the annular body 7 very easily and does not cause the attached annular body 7 to come off, and reliably exerts the biasing force in the opening direction of the lid. To do.
[0024]
Further, the lid opening / closing mechanism of the third means allows the lid body to be formed by integral molding of synthetic resin or the like with the lid plate 9 open, making it easier to manufacture and the presence of the fitting plate 32 Thus, the closed lid plate 9 can be reliably locked, and the annular body 7 can be more reliably prevented from coming off.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of the present invention.
FIG. 2 is a perspective view of an open state showing the embodiment;
FIG. 3 is a longitudinal sectional view of a main part of the same embodiment.
FIG. 4 is a longitudinal sectional view of an essential part of the embodiment in the opened state.
[Explanation of symbols]
2 ... main body, 3 ... lid, 4 ... biasing means, 5 ... first locking part, 6 ... second locking part,
7 ... annular body, 8 ... pivoting projection, 9 ... lid plate, 10 ... hollow projection, 11 ... locking step,
12 ... Upper end of main body, 13 ... Top wall, 14 ... Groove, 28 ... Upper plate, 29 ... Rear plate, 30 ... Refraction part, 31 ... Lower plate, 32 ... Fitting plate

Claims (1)

A lid opening / closing mechanism comprising a biasing means 4 for constantly biasing the lid body 3 provided on the top surface of the main body 2 so as to be openable and closable and capable of being locked in a closed state. 4 is a cover body 3 in which a resilient annular body 7 is stretched over a first locking section 5 at the rear of the lid body and a second locking section 6 at the top of the main body in front of the lid body 3. Is normally urged in the opening direction, and the first locking portion 5 protrudes from the rear portion of the lid 3 between a pair of pivoting protrusions 8 that protrude from the rear portion of the lid 3 and pivotally attach to the rear portion of the main body. At the same time, the position is specified by a pair of locking step portions 11 provided on the inner side surface of the hollow projection 10 with both ends open on the lid plate 9 that can be partially opened and closed , and recessed at predetermined positions on both sides of the hollow projection 10. an the inside surface, said second engaging portion 6 is a top wall 13 the back surface positioned between the pair of kerfs 14 which is formed in the rear edge of the main body upper end opening 12, the hollow protrusion 10 An upper plate 28 which projects from the lid 3 rear top, a plate 29 after vertically from the edge after the upper plate, a lower plate 31 which extends forwardly through the refracting portion 30 from the rear plate 29 the lower edge A lid opening / closing mechanism comprising a fitting plate 32 extending upward from the front edge of the lower plate 31 and fitted to the rear surface of the lid body , and the lower plate 31 being configured as the lid plate 9 .

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