JPH0688604B2 - Sealed container with lid opening / closing device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sealed container with a lid opening / closing device, and more particularly to a sealed container with a lid opening / closing device that opens and closes a lid by operating a foot lever or a foot pedal.

[Conventional technology]

In conventional containers with lid opening and closing devices, especially trash cans with lids used to maintain environmental hygiene and cleanliness in stations, hospitals, buildings, underground malls, etc., by pushing down the foot lever or foot pedal, Open the lid,
A so-called foot lever type trash can is widely used in which a lid is closed by its own weight when a foot is separated from a foot lever or a pedal.

[Problems to be Solved by the Invention]

Such a trash can has an advantage that it can be opened and closed without touching the lid with the touch of a foot, in other words, it has a bad effect of preventing the entry and exit of cockroaches and ants and the emission of odors, and the trash bag (polybag) ) Must be done with the foot lever down, otherwise the lid may drop suddenly and your hands may get caught, or it may interfere with the replacement work. There was one drawback. Although a sealed container such as a drum can having a sealing function used for chemicals, foods, chemicals, etc. is used, the opening and closing operation of the lid of such a container is cumbersome and frequently opened and closed, and Not suitable for a trash can that can be opened and closed easily.

[Means for Solving the Problems]

Therefore, the present invention is a lid opening / closing device including a container body 1, a container mouth fitting frame 2, a lid 3 whose one end is pivotably attached to the container body 1 and a lid opening / closing device 4 attached to an outer wall of the container body 1. In the sealed container with a lid, the lid opening / closing device 4 includes a U-shaped foot lever 41 having an intermediate portion pivotally supported on both side surfaces of the container body 1 and a pedal provided at one end, and a foot lever slidably having a lower end via a pin. Arc-shaped sliding groove 42a connected to the free end of 41
And the upper end having the hook lever 42d is a lid 3
A lid push-up rod 42 pivotally attached to a substantially middle portion of both side surfaces of the spring lever, a lower end pivotally attached between a free end and a pivot fulcrum of the foot lever 41, and an upper end extending upward.
And a swingable spring lever 44 having a central portion pivotally attached to the side surface of the container body 1, a tip having a free end, and a rear end pivotally attached to an upper end of the operating rod 43, and an upper end being a roller. 45a
The sliding pin 44c is slidably fitted into the sliding groove 44b formed on the spring lever 44, and the stopper pin 44c is attached to the spring lever 44 so that the roller 45a can move freely. 1 is composed of a main spring 45 that is hooked on the hooking portion 19 on the side surface, and an auxiliary spring 46 that is hooked at the upper end approximately midway of the lid push-up rod 42 and at the lower end that hooks at the tip of the foot lever 41. A sealed container with a lid opening / closing device.

[Action]

According to the present invention, the lid keeps the container opening always sealed by the urging force of the main spring 45, and when the pedal of the foot lever 41 is fully depressed toward the ground with the foot, the lid 3
Is opened half-opened by the lid push-up rod 42 of the lid opening / closing device 4 and fixed at that position. Then release your foot from the pedal,
The lid 3 closes the lid 3 by its own weight and the spring 45 which gradually recovers following this by applying a torque acting on the spring lever 44 to close the lid. If you pull out the stop pin 44c with the pedal depressed, or if you first remove the stop pin and then step down the pedal, the lid 3 will fully open and the lid opening / closing device 4 will maintain this state even if you pull your foot off the pedal. However, even if the lid 3 receives an external force, the spring bounces back to its original position so that the lid does not close unnecessarily, and there is no risk of getting in and out of the garbage bag and of not having a hand caught. Furthermore, after exchanging the garbage bag,
When the lid is pushed down to a position where it is almost closed, the lid descends by its own weight and the torque of the main spring 45 is also applied to close the container mouth, and at the same time, the main spring 45 acts and the lid is closed via the opening / closing device 4. Hold.

〔Example〕

1 to 3 show an embodiment in which the sealed container with a lid opening / closing device of the present invention is applied to a trash can. The container is detachably attached to the container body 1 and the upper opening peripheral portion of the container body 1. It comprises a fitting frame 2 fitted therein, a lid 3 pivotably attached to the rear end of the opening of the container body 1 so that one end can be opened and closed, and a link-like lid opening / closing device 4 arranged on both outer walls of the container body 1.

The container body 1 is a bottomed rectangular tubular body or a box-shaped or trough-shaped container in which at least both side walls are formed flat, and its opening is at a rim 12 having an annular step 11 on the inner wall. The stepped portion 11 is provided with an annular groove 13, a seal ring 14 is fitted in the groove, and a pair of stoppers 15 and a pair of elongated hole-like pivot holes are provided in the rear portion of the main body 1. A pivot support portion 17 provided with 16 is formed so as to project upward, and a pivot support portion 18 of a foot lever and a hooking portion 19 of a main spring, which will be described later, are provided in proximity to each other on both outer walls of the main body 1. There is. A stopper pin 10 for holding the lid push-up bar 42 at that position is provided on the rear upper part of the outer wall on both sides so that a hook member (hook lever) 42d described later becomes vertical.

The fitting frame 2 is an annular tubular body having a flange portion 21 on the upper end, and is fitted on the inner circumference of the rim portion 12 of the container body 1 and the lower end is a seal ring
It is configured to abut the stepped portion 11 via the
An annular groove 22 is formed on the upper surface of 21, and a seal ring 23 is fitted in the groove.

The lid 3 is a plate-shaped or shallow box-shaped (plate-shaped in this embodiment) lid that covers the opening of the container body 1, and a pivoting piece 31 protruding rearward is provided at the rear end of the lid 3. Shafts 32 fitted between both side walls of 17 and slidably fitted in the pivot support holes 16 at shaft ends 32 provided at both ends of the pivotally attaching piece 31 are interlocked with the lid opening / closing device 4 so that the lid is opened. It is attached to the container body 1 so as to open and close with respect to the opening with the shaft portion 32 as a fulcrum.

The lid opening / closing device 4 has a middle portion as a pivotal support portion on both sides of the main body 1.
A foot lever 41 having a substantially U-shape, in which a pedal 40 is provided on a front end rod portion 41a which is pivotally attached to a pivot 18 and can be bent via a hinge portion 41c extending to the front of the container body 1, and the lower end is an arc shape. It is formed in a groove member 42b having a sliding groove 42a, and the sliding groove 42a is slidably fitted into a pin 41b provided at the free end of the foot lever 41 to be linked so as to be interlockable with the foot lever 41, and the upper end is a pin. A pair of left and right lid push-up bars 42, which are rotatably pivotally attached to the side surface of the lid 3 by a portion 42c, and have hook members 42d extending vertically downward with respect to the lid 3, and a lower end thereof. Is rotatably pivoted between the free end of the foot lever 41 and the pivotally supporting portion 18 via a pin 43a, the upper end of which extends upward toward the lower end of the hook member 42d, and the middle portion of which is a pin. Both ends are swingably attached to the upper side surface of the container body 1 via 44a. It is pivotally attached so as to be in a flat state, and one end is pivotally attached to the upper end of the spring lever actuating rod 43 through a pin 43b, and this end always presses the hook member 42d when the lid is closed. The spring lever 44 with the roller guide groove (sliding groove) 44b and the upper end through the roller 45a and the sprinkle lever 4
4 It is slidably locked in the roller guide groove 44b of 4 and the locking pin
The moving distance in the groove is limited by 44c, and the lower end of the main spring 45 is hooked to the spring hooking portion 19 provided on the side surface of the container body 1, and the upper end of the main spring 45 is hooked almost midway. The lower end of the foot lever 41 is constituted by an auxiliary spring 46 that is hooked on the end portion of the foot lever 41 near the end on the pin 41b side.

When the container is used as a trash box, a trash bag 5 such as a vinyl bag is used in the container. After the bag mouth of this garbage bag 5 is folded back to the edge of the container body 1, the fitting frame 2 is fitted to fix the bag. The bag mouth may be folded back inward after the fitting frame 2 is fitted.

As shown in FIG. 1 and FIG. 4, the container constructed as described above causes the lid 3 to have the hook member 42 by the pulling force of the main spring 45.
The container mouth is covered by a spring lever 44 holding d. At this time, spring lever
44 is kept horizontal, the roller 45a is locked to one end of the roller guide groove 44b, the main spring 45 is kept substantially vertical, and the tip pin 41b of the foot lever 41 is at the lower end of the groove of the groove member 42b. , The pedal 40 is in the upper position in the operable state. The elastic force of the main spring 45 is stronger than that of the sub spring 46.

Next, the use and operating state of an embodiment in which the container of the present invention is used as a trash can will be described.

As shown in the operation explanatory view of the lid opening / closing device of FIG. 4, when the user depresses the pedal 40 with his / her foot, the foot lever 41 is pivotally supported.
It rotates in a direction indicated by an arrow, that is, in a clockwise direction with 18 as a fulcrum. At this time, the pin at the tip of the foot lever 41
Since 41b slides upward along the sliding groove 42a of the groove member 42b and performs a lost motion, the lid push-up rod 42 remains stationary, but the spring lever actuating rod 43 rotates the foot lever 41. Along with that, the spring lever 44 connected thereto is rotated clockwise about the pin 44a as a fulcrum and tilted. When the spring lever 44 tilts, one end of the spring lever 44 separates from the hook member 42d, the roller 45a at the upper end of the main spring 45 slides down to the lower end along the roller guide groove 44b, and the pin 41b becomes the upper end wall of the sliding groove 42a. At the time of locking, the roller 45a is close to the pivot point, and when the pedal 40 is further depressed, the stop pin 44 attached to the spring lever 44 is
It slips down to the position where it is locked at c, and the state shown by the chain line in Fig. 4 is reached. As the roller 45a of the main spring 45 moves from the tip of the spring lever 44 to the position of the stop pin 44c attached to the neutral position, the torque radius of the spring 45 with respect to the fulcrum pin 44a gradually decreases, so the torque applied to the spring lever 44 also increases. The torque gradually decreases, and the torque becomes almost zero when the roller 45 is locked to the stop pin 44c. After the pin 41b engages with the upper end wall of the sliding groove 42a, that is, after the foot lever 41 performs the lost motion, the pedal 40
Since the foot lever 41 is still depressed and descends, the foot lever 41 pushes up the lid push-up rod 42 with the tip pin 41b using the pivotally supporting portion 18 as a fulcrum, and the push-up rod 42 pushes up the lid 3 via the pin 42c.

The lid 3 has a long pivot hole 16 in the rear end pivot portion 17 of the container body 1 so that the effect of tightly closing the container mouth horizontally can be achieved in the state where the opening portion of the container body 1 is closed. Since it is formed in a hole shape, the lid 3 first becomes horizontal and is lifted by the push-up rod 42, and the shaft portion 32 also rises accordingly, and after this is locked at the upper end of the pivot hole 16, At this position, the shaft 3 is pivoted counterclockwise about the fulcrum to open the lid 3. This state is shown in FIG.

As described above, when the foot lever 41 is operated, the spring lever 44 tilts, and the torque applied to the lever 44 of the main spring 45 gradually decreases as the roller 45a moves toward the stop pin 44c, and finally becomes zero. , The lever 44 is separated from the hook member 42d before the lid push-up rod 42 lifts the lid 3, and the elastic force of the main spring 45 does not act on the lid 3, so the pedal 40 does not have the resistance force of the spring 45, and the pedal can be adjusted. Becomes lighter.

After the lid 3 is opened to a predetermined degree of opening / closing, that is, a half-open state as shown by the chain line in FIG. 5, dust and paper waste can be put into the container. When the foot is released from the pedal 40 after the insertion, the lid 3 pivots downward by its own weight to close the container mouth, and at the same time,
The lid opening / closing device 4 as a whole also returns to its original state, and the roller 45a of the main spring 45 moves to the left end of the lever 44 as the spring lever 44 pivots to return to the horizontal state, and urges the lever 44 downward again. , The hook member 42d is pressed to close the lid 3.

Then, when taking out the vinyl bag 5 in which dust inside the container is collected and replacing it with a clean bag, first, the tip of the locking pin 44c that locks the roller 45a is completely inserted into the screw hole of the lever 44 from the groove 44b. When the pedal 40 is fully depressed after it is screwed up, as shown in FIG. 6, the lid 3 opens as described above, but the roller pin 44b of the spring lever 44 is partially blocked by the stop pin 44c. Roller 45a is not grooved
The left end of the 44b passes below the pivot point (fulcrum pin) 44a in the neutral position, and slips down while rotating to the right end of the groove 44b. At this time, the main spring 45 is the spring lever
Since a torque that rotates clockwise with respect to 44 is generated, the left end of the spring lever 44 pulls up the operating rod 43, and only the clockwise rotational torque of the main spring 45 causes the lid 3 to rotate so that the lower end of the back surface of the lid 3 is the pivot portion 17. Fully open to the maximum until it is locked by stopper 15. In this case, since the clockwise torque applied to the spring lever 44 by the elastic force of the main spring 45 is set to be larger than the dead load of the sub spring 46 and the entire opening / closing device 4, the lid 3 is held in the fully opened state. Never falls. Therefore, even if the foot releases the pedal 40, the lid 3 remains fully opened, which is convenient for replacing the vinyl bag 5. At this time, even if the lid 3 is lightly hit or tapped,
Point A shown in FIG. 6 (that is, a point indicating the position of the lid 3 when the lower end of the hook member 42d is on the rotation locus drawn by the left end of the spring lever 44, at which time the main spring 45 is on the neutral line). Torque becomes zero and the spring lever 44 makes 90 ° with it), unless the lid 3 comes close to this lever.
The main spring 45, which applies a rightward torque to 44, returns the lid 3 to the fully opened state via the lid opening / closing device 4, so that the lid 3
There is no risk of accidentally falling (closing) and pinching your hands.

After replacing the bag, when the lid 3 is strongly pushed down toward you by hand, the spring lever 44 pushes up the rod 42 and the operating rod 4.
3, rotate counterclockwise by the interlocking of the foot lever 41,
After the roller 45a slides along the groove 44b from the right end to the left end and passes below the pivot point 44a, which is the neutral point, torque is generated in the opposite direction as when the lid is closed, and the tip of the spring lever 44 is hooked. The lid 3 is pressed downward via 42d to return to the closed state shown in FIG. After the lid 3 is closed, the stopper pin 44c is screwed in to limit the moving distance of the roller 45a to the position where the lid 3 is opened again, and the roller 45a can be used as described above.

Since the respective members of the lid opening / closing device 4 are set so as not to interfere with each other during operation, the lid can be opened / closed smoothly.

In the above embodiment, the reason why the pedal side end portion of the foot lever 41 is made into a two-step type capable of bending in one direction is adopted in consideration of an appropriate operating angle of the foot lever 41 and an operating altitude of the pedal 40. Depending on the design, the position of the pedal 40, the length and shape of the push-up rod 42 and the operating rod 43 may be changed to use a single foot lever 41. Further, an outer cylinder or a cover (not shown) may be provided to prevent the lid opening / closing device 4 from being exposed, and only the pedal end portion of the foot lever 41 may be operably projected to the front surface of the container body 1. . For example, two container bodies are arranged in parallel, a lid opening / closing device is provided on the inner surfaces of the respective container bodies that face each other, and a lid that covers both container openings at the same time and a common pedal that projects from the front of both containers are provided. Open and close both container ports at the same time by operating the pedals,
It can also be configured as a sorting trash box that stores burnable garbage and non-burnable garbage in their respective containers.

The necessity of incorporating lost motion will be described here.

When there is no lost motion when the pedal 40 is depressed to open the closed lid, the lid push-up rod 42 tries to immediately push up the lid 3, but the spring lever actuating rod 43 driven by the same foot lever 41 operates. Ascending speed slower than the push-up bar 42 (because the driving radius is smaller than the former)
Therefore, the lid 3 cannot be opened because the left end of the spring lever 44 still presses the hook member 42d. Therefore, the slide member 42b at the lower end of the lid push-up rod 42 is provided with a sliding groove 42a for performing lost motion. This lost motion, that is, the play of the pin 41b, gives the spring lever 44 a margin such that the hook pressing end of the spring lever 44 precedes the hook member 42d and does not prevent the lid 3 from opening. Therefore, the lid 3 can be smoothly opened. . This play can always precede the left end of the spring lever 44 until the latter comes to the intersection P between the turning locus of the left end of the spring lever 44 and the turning locus of the lower end of the hook member 42d as shown in FIG. I can afford it.

Further, in order to prevent the hook holding end of the spring lever 44 from returning earlier than the hook member 42d during operation, that is, falling off and not being able to press the hook member 42d, the relationship between the spring lever 44 and the main spring 45 is prevented. Is designed to work as follows. That is, as shown in FIG. 6, when the lid 3 is fully opened and closed by hand, when the lid 3 rotates clockwise and reaches the point A, the inclined spring lever 44 and the main spring 45 are Is 90 ° on the neutral line
It is designed to be orthogonal to (shown by the chain line). Therefore, before the lid 3 comes down to the position of this point A, if something causes or something is caught in the container mouth and the lid 3 does not come down completely, the roller 45a forms 90 °. On the right side of the neutral line, the left end of the spring lever 44 is the main spring 45.
Since the torque is generated in the clockwise direction by the above, the spring lever 44 does not fall in advance and naturally fall off. Further, in a general use state in which the pin 44c is inserted and the position of the roller 45a is limited, the roller 45a is locked to the pin 44c slightly to the right of the neutral line, so a small torque but a spring lever is used. Against 44, it is a clockwise torque, and this torque is the lid 3 and the push-up bar 4.
2. It is smaller than the total weight of the operating rod 43, but the lid 3
If an object is caught in, the total weight will be absorbed by the container,
Only the self-weight of the spring lever operating rod 43 remains, and the spring lever 44 and the foot lever 4 are considered to be zero because the self-weights on both sides of the fulcrum are canceled out, so this torque does not drop the spring lever 44 sufficiently. However, as a precaution, the auxiliary spring 46 is provided to keep the pin 41b in contact with the upper end of the lost motion generating sliding groove 42a and to increase the clockwise torque. Completely prevent emptiness. Further, when the lid 3 descends below the point A, the lower end of the hook member 42d is the intersection of the turning loci of the lower end of the hook member 42d and the left end of the spring lever 44 prior to the spring lever 44.
The spring lever 44 still does not fall empty because it has come to the point. When the lid 3 is fully opened, the spring action of the sub spring 46 is maximum, but since it is smaller than the spring force of the main spring 45 at this time, even if there is some residual elasticity when the lid is closed, the lid closing and sealing operation is performed. Has almost no effect on Then, when the lid 3 is just closed, the spring lever 44 is still in an inclined state, the main spring 45 generates a counterclockwise torque to pull down the left end of the spring lever 44, and the pin 41b.
Loosens in the groove 42a, and the spring lever 44 moves the hook member 42d.
The lid 3 can be tightly sealed by pressing. As described above, the action of the lost motion makes it possible to smoothly open and close the lid and prevent the spring lever from falling off.

〔The invention's effect〕

As described above, according to the present invention, when the pedal of the foot lever is depressed, the spring lever precedes and separates from the hook member, the lid lifting bar opens the lid, and the foot releases the pedal, the lid closes, The elastic force of the main spring keeps the lid tightly sealed, preventing the invasion of insects and the release of odor, pulling out the retaining pin of the spring lever, and fully depressing the pedal, the lid opens fully, At this time, even if the foot is removed from the pedal, even if the lid is subjected to an external force, the torque action of the main spring on the spring lever keeps the lid in the fully opened position or returns to that position, which is convenient for replacing the vinyl bag. , There is no danger of the lid falling off unexpectedly. Furthermore, after the bag is replaced, the lid can be closed by hand and the retaining pin can be inserted back to the original position to return to the closed state for reuse.

[Brief description of drawings]

1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a side view of the present invention showing a lid opening / closing device, FIG. 3 is a plan view of the present invention, and FIGS. 4 to 6 are lids. FIG. 4 is an explanatory view showing the opening / closing operation of FIG. 4, and FIG.
The figure shows the operating state from after the lost motion until the lid is opened again, and FIG. 6 shows the operating state from the lid opened to full opening. 1 ... Container body, 2 ... Fitting frame, 3 ... Lid, 4 ... Lid opening / closing device, 18 ... Pivot support part, 19 ... Latch part, 40 ... Pedal,
41 …… Foot lever, 41b …… Pin, 42 …… Lid pushing up rod, 42a …… Sliding groove, 42b …… Groove member, 42d …… Hook lever, 43 …… Spring lever operating rod, 44 …… Spring lever, 44b …… Sliding groove, 44c …… Stopping pin, 45 …… Main spring, 46 …… Sub spring, 45a …… Roller.

Claims (3)

[Claims] 1. A container opening / closing device which comprises a container body 1, a container mouth fitting frame 2, a lid 3 covering the container opening, and a lid opening / closing device 4 with a pedal 40, and which opens / closes the lid 3 by stepping down the pedal. In the attached container, the lid opening / closing device 4 has an intermediate portion pivotally attached to the pivotally supporting portions 18 on both side surfaces of the container body 1, a pedal 40 is attached to one end extending forward of the container body 1, and a pin 41b is attached to one end extending rearward. And a groove member 42 having a U-shaped foot lever 41 and a sliding groove 42a whose lower end is slidably fitted to the pin 41b.
The hook lever is linked to the rear end of the foot lever 41 via b, and the upper end is pivotally attached to a substantially central portion of the side surface of the lid 3 and the lower end extends downward from the pivot end. A lid push-up rod 42 provided with 42d, a lower end thereof is rotatably pivotally mounted between the pivotally supporting portion 18 of the foot lever 41 and an end on the pin 41b side, and an upper end thereof extends upward, and a spring lever 44 described below is provided.
A spring lever operating rod 43 pivotally connected to the spring lever operating rod 43, a central portion of which is pivotally attached to a side surface of the container body 1, a front end of which is a free end, and a rear end of which is pivotally attached to an upper end of the spring lever operating rod 43. The slide lever 44 with a sliding groove 44b is slidably attached to the sliding groove 4 through the roller 45a attached to the spring lever 44.
A main spring 45 fitted in 4b and having a lower end hooked on a hooking portion 19 provided on the side surface of the container body 1, an upper end hooked on an intermediate portion of a lid push-up rod 42, and a lower end a foot lever.
41. A sealed container with a lid opening / closing device, comprising: an auxiliary spring 46 hooked at the tip of 41. 2. A foot lever is provided at the lower end of the lid push-up rod 42.
The lid according to claim 1, wherein the lid 41 is formed on an arcuate groove member 42b provided with a sliding groove 42a corresponding to a lost motion of an arc locus performed by the pin 41b when the pin 41b is operated. Sealed container with switchgear. 3. When the upper portion of the spring lever 44 penetrates through a portion near the pivotal support portion and one end thereof projects into the sliding groove 44b, the movement of the roller 45a of the main spring 45 is limited to limit the cover 3 When fixed to the half-open state and retracted from the groove,
Removable retaining pin 44 configured to automatically fully open the lid 3 from the half-opened state and hold the lid 3 in the fully opened position.
The sealed container with a lid opening / closing device according to claim 1, wherein c is provided.