JP2002347803A - Lid opening/closing mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lid opening/closing mechanism having an urging means 4 for always urging a lid body 3 to be openable/closable and lockable to an upper surface of a body 2 in a closed condition, capable of urging the lid body in the opening direction with a very simple structure unnecessarily sorting without using any metal, capable of easily assembling, and capable of sufficiently demonstrating the urging force in the opening direction. SOLUTION: The lid opening/closing mechanism comprises the urging means 4 for always urging the lid body 3 in the opening direction by stretching an elastic annular body 7 in an extended condition over a first locking part 5 of a rear of the lid body and a second locking part 6 of an upper part of the body forward thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover opening / closing mechanism.

[0002]

2. Description of the Related Art As an opening / closing mechanism for a lid, there is a mechanism in which a lid is provided on an upper surface of a main body such as a container body so as to be openable and closable. There is known a configuration in which the lid is automatically opened when the locking of the lid is released. These are often used, for example, in containers for wet tissues, but as means for urging the lid in this type of conventional opening / closing mechanism, means for attaching a torsion spring or the like to a shaft attachment portion of the lid is used. Is generally adopted.

[0003]

The torsion spring or the like is fine as a member, and its assembling operation is troublesome. Also,
Since it is generally formed of metal, it is inconvenient when it is used for a lid opening / closing mechanism including a container and a lid made of a synthetic resin, etc., in the case of disposal involving recent separation processing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and can urge the lid in the opening direction with a very simple structure.
Another object of the present invention is to provide a lid opening / closing mechanism that is easy to assemble and can exert a sufficient urging force in the opening direction.

[0005]

According to a first aspect of the present invention, there is provided a lid opening / closing mechanism including a lid body provided on an upper surface of a main body so as to be openable and closable and capable of being locked in a closed state. A lid opening / closing mechanism including a biasing means for biasing the cover in a normally open direction, wherein the biasing means includes a first locking portion at a rear portion of the lid and an upper portion of a main body in front of the first locking portion. And the second locking portion 6 of
A cover opening / closing mechanism is characterized in that the cover 3 is constantly urged in the opening direction by bridging the elastic ring 7 in an extended state.

According to a second aspect of the present invention, there is provided a lid opening / closing mechanism, wherein the first locking portion is protruded from a rear portion of the lid and is pivotally connected to a rear portion of the main body. A pair of locking projections projecting from the rear of the body 3 and recessed at predetermined positions on both sides of the hollow projection 10 at both side end openings formed in the lid plate 9 which can be partially opened and closed, and on both sides of the hollow projection 10. The inner surface whose position is specified by the step portion 11, wherein the second locking portion 6 is the back surface of the top wall 13 located between a pair of cut grooves 14 formed in the rear edge of the main body upper opening 12. Item 1 was configured as a lid opening / closing mechanism.

Further, in the lid opening / closing mechanism according to the third aspect of the present invention, the hollow projection 10 is provided with an upper plate 28 protruding from the upper rear surface of the lid 3.
And a rear plate 29 extending downward from the rear edge of the upper plate, a lower plate 31 extending forward from the lower edge of the rear plate 29 via the bending portion 30, and extending above the front edge of the lower plate 31. 3. A fitting plate 32 fitted on the rear surface of the lid, wherein the lower plate 31 is configured as the lid plate 9.
It was configured as the lid opening and closing mechanism described.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in the drawings, a lid opening / closing mechanism A of the present invention is shown.
Includes a biasing means 4 for constantly biasing the lid 3 provided on the main body 2 so as to be openable and closable and capable of being locked in a closed state in an opening direction. 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 formed of a synthetic resin or the like, and may take various forms as long as the above requirements are satisfied.

Various means can be employed for locking the main body 2 when the lid 3 is closed, and a locking plate protruding from one side as shown in the illustrated example can be removably slid on the other peripheral wall. The cover is engaged by means of contact fitting or means (not shown) by fitting cylinders projecting from both sides, or by engaging one hook over the other engaging projection. Locking means and other conventionally used locking means can be employed. In this case, as a means for releasing the lock, a method of releasing the engagement portion by grasping the finger hook projection with the user's finger and opening the lid, or releasing the engagement portion via a push button or the like Known means can be adopted.

In the present invention, the biasing means 4 comprises a resilient annular body 7 on the first locking portion 5 at the rear of the lid 3 and the second locking portion 6 on the upper part of the main body 2 in front of the same. In a stretched state to constantly bias the lid 3 in the opening direction.
The annular body 7 is formed of a material having high elasticity such as an elastomer, and specifically, a rubber band, an O-ring, or the like can be used.

The first locking portion 5 and the second locking portion 6 can lock the extended annular body 7 respectively, and can position and shape the cover 3 to always urge it in the opening direction. If so, various forms can be adopted. In the illustrated example, a lid plate 9 projecting from a rear part of the lid 3 and projecting from a rear part of the lid between a pair of pivotally projecting parts 8 pivotally attached to a rear part of the main body, and a part of which can be opened and closed.
On the inner surface of the hollow protrusion 10 of the opening on both side end surfaces, and
The inner surface whose position is specified by a pair of locking steps 11 recessed at predetermined positions on both sides of the hollow protrusion 10 is defined as a first engaging portion 5, and
The back surface of the top wall 13 located between the pair of cut grooves 14 formed in the rear edge of the upper end opening 12 of the main body 2 serves as the second locking portion 6.

In this case, the locking step portions 11 are provided on both sides of the rear end of the cover plate 9. However, the present invention is not limited to this, and the extended annular body can be locked, and the cover body 3 is constantly biased in the opening direction. Any position can be used as long as the position can be made. Further, instead of the locking step 11, a pair of cut grooves may be provided at predetermined positions on both sides of the hollow projection 10 to set the positions.

Hereinafter, the illustrated example will be described in detail. In the illustrated example, the main body 2 has the top wall 13 extending from the upper edge of the peripheral wall 15 and the bottom wall extending from the lower edge. Also,
A first recess 16 for fitting a push button provided at the center of the front part of the top wall 13; a second recess 17 for fitting the lid, which is recessed at the center of the top wall 13 continuously with the recess; A third concave portion 18 is provided at the rear center of the top wall 13 so as to be continuous with the lid and is pivotally mounted on the lid.

A push button 19 is fitted in the first recess 16 so as to be vertically swingable. The push button 19 is provided with a pair of pivoting feet (not shown) vertically provided from both sides of the lower surface of the top plate 20 so as to be pivotally attached to both sides of the concave portion so as to be able to swing up and down, and to push down the front portion of the top plate 20. Thereby, the pair of push-up protrusions 21 protruding from the rear portion is configured to move upward. A locking plate 22 for locking the lid 3 is provided upright between the push-up protrusions 21 from the front of the lid 3.

The second concave portion 17 has a horizontally long rectangular shape, and a second lower concave portion 17a is formed by further depressing a central portion. 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. Has been established. Further, a pair of cut grooves 14 are formed at intervals at the rear edge of the outlet 12, and the back surface of the top wall 13 between the cut grooves is configured as the second locking portion 6.

The third concave portion 18 has a horizontally long rectangular shape partially overlapping the rear center of the second concave portion 17 and formed deeper than the second concave portion 17. are doing.

The cover 3 has a peripheral wall 24 fitted in the second recess 17.
A top wall 25 is extended from the upper end edge of the base, and a pair of pivot projections 8 are projected from the rear surface of the peripheral wall 24 at intervals, and pivot shafts projecting from each outer surface of each pivot projection 8. 26 are pivotally attached to the pivot holes 23 so as to be openable and closable. The surrounding wall 24
On the inner periphery, a fitting cylinder 27 is vertically installed at a predetermined interval from the peripheral wall 24,
The cylinder is closely fitted to the inner surface of the second lower recess 17a. Furthermore,
The front central rear surface of the peripheral wall 24 is brought into sliding 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.

A hollow projection 10 is provided between the pivoting projections 8. As shown in FIG. 3, the protruding portion 10 includes an upper plate 28 protruding from the upper rear surface of the lid 3 and a rear plate 29 protruding from the rear edge of the upper plate.
Lower plate 31 extending forward from lower edge of rear plate 29 via bending 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 configured as the lid plate 9. Further, the rear plate 29 is formed narrower than the upper plate 28 and the lower plate 31, and the locking step 11 is formed on both sides of the rear edge of the lower plate 31.

When the annular body 7 is assembled in the opening / closing mechanism configured as described above, for example, as shown in FIG. The rear cover plate 9 wrapped in between is bent at the bent portion 30 and closed, and the fitting plate 32 is fitted to the rear surface of the cover body. At this time, as shown in FIG. 1, the fitting plate 32 may be provided with a projection 33 so as to make the fitting of the fitting plate 32 more difficult to be disengaged. Next, the lid 3
After each pivot shaft 26 is fitted into each pivot hole 23 of the main body and pivoted, the other end of the annular body 7 can be assembled by bridging the back surface of the top wall 13 between the cut grooves 14. . The assembling means is not limited to this.

The case where the above-described lid opening / closing mechanism is used will be described. First, when the front part of the push button 19 is depressed, the push-up projection 21 pushes up the front part of the lid peripheral wall 24, and the locking plate 22 and the peripheral wall 24 are pressed.
And the engagement between the fitting cylinder 27 and the second lower concave portion 17a is released, and then the lid 3 is opened by the elastic restoring force of the annular body 7.
When closing the lid 3, the top wall 25 is pushed and the locking plate 22 and the peripheral wall 24 and the fitting cylinder 27 are again engaged with the second lower concave portion 17a.

[0022]

As described above, the lid opening / closing mechanism according to the first aspect of the present invention can sufficiently exert a biasing force in the opening direction of the lid with an extremely simple structure by adopting the above-described structure. The assembling operation becomes extremely simple. Also, body 2
When the lid 3 is made of a synthetic resin, it is not necessary to use a metal spring or the like as in the conventional product, so that there is no need to consider a process of separating synthetic resin and metal.

In the lid opening / closing mechanism according to the second aspect of the present invention, the annular body 7 can be attached very easily, and there is no fear that the attached annular body 7 comes off. It exerts its power.

In the lid opening / closing mechanism according to the third aspect of the present invention, the lid can be formed by integral molding of synthetic resin or the like with the lid plate 9 opened, so that the production can be more easily performed and the fitting plate can be formed. With the presence of 32, the closed lid plate 9 can be securely locked,
The ring member 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 showing the same embodiment in an open state;

FIG. 3 is a vertical sectional view of a main part of the embodiment.

FIG. 4 is a longitudinal sectional view of a main part of the embodiment in an open state;

[Description of Signs] 2 ... body, 3 ... lid, 4 ... urging means, 5 ... first locking portion,
Reference numeral 6: second locking portion, 7: annular body, 8: pivoting projection, 9: lid plate, 10: hollow projection, 11: locking step, 12: upper end opening of the main body,
13 ... top wall, 14 ... cut groove, 28 ... upper plate, 29 ... rear plate, 30 ... bending part, 31 ... lower plate, 32 ... fitting plate

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E084 AA05 AA14 AA24 AB10 BA02 CA03 CC03 EA01 EB03 EC03 FA06 GA06 GB06 GB25 KB10 LA18 LB02 LB08

Claims (3)

[Claims] 1. A lid opening / closing mechanism comprising a biasing means 4 for constantly biasing a lid 3 provided on an upper surface of a main body 2 to be opened and closed and capable of being locked in a closed state in an opening direction. The urging means 4 extends the elastic annular body 7 in an extended state between the first locking portion 5 at the rear portion of the lid and the second locking portion 6 at the upper portion of the main body in front of the first locking portion 5. A lid opening / closing mechanism wherein the lid 3 is constantly biased in the opening direction. 2. The first locking portion 5 projects from the rear portion of the lid 3 between a pair of pivoting projections 8 projecting from the rear portion of the lid 3 and pivotally attached to the rear portion of the main body. On the inner surface of the hollow protrusion 10 having both side end openings formed on the cover plate 9 that can be opened and closed, and on the inner surface whose position is specified by a pair of locking steps 11 recessed at predetermined positions on both sides of the hollow protrusion 10. 2. The lid opening / closing mechanism according to claim 1, wherein the second locking portion is a back surface of the top wall located between a pair of cut grooves formed in the rear edge of the main body upper opening. 3. The hollow projection 10 includes an upper plate 28 projecting from the upper rear surface of the lid 3, a rear plate 29 vertically extending from the rear edge of the upper plate, and a bending portion 30 extending from a lower edge of the rear plate 29. Lower plate 31 extending forward through
3. The lid according to claim 2, further comprising: a fitting plate extending upward from a front edge of the lower plate and fitted to a rear surface of the lid, wherein the lower plate is configured as the lid plate. mechanism.