CN2110612U - Mechanism for opening and closing lid - Google Patents

Abstract

The utility model discloses a mechanism of foot pedal lever opening and closing lid, characterized in that the utility model is provided with an oscillating rod which is fixed with a tension arm and which rotates with the same axle wound, a rocker arm whose long arm end is fixed at the symmetric point of a gravity center at the edge of a cover and whose short arm end is hinged in an axial slot at the top end of the oscillating rod, and which rotates with a supporting axle wound, a reset spring whose one end is connected with a container and the other end of which is connected with the short arm end of the rocker arm or the top end of the oscillating rod and a gravity balancing spring whose one end is connected with the container directly or via a coupler and the other end of which is connected with the long arm of the rocker arm. The shaft lines of the axle and the supporting axle are positioned on the same vertical plane at the back of the container.

Description

Mechanism for opening and closing lid

The utility model is about container, particularly about the switching mechanism of container lid.

The lid of the lid of container, especially tun, (as hygienic requirements, easy to operate etc.) inconvenience directly opens and closes with hand, then adopts various foot-operated switching mechanisms to realize the opening and closing of lid because a variety of causes.October 10 nineteen ninety, Chinese Patent Office disclosed the utility application of a kind of " convenient and healthy sewage disposer " (notification number CN2063509U, application number 90200981.8), was exactly that a kind of representative type uses pedal lever mechanism to open lid.In the foot-operated lever opening of this class mechanism, the lid of container is hinged on the wall of container with the one end, lid is opened in the jacking campaign of the push rod of gravity arm of lever end by the hinge knot then, so must overcome the gravity of lid in the process of opening, the lid opening is bigger, and required crack force is bigger.If must be laborsaving, then must strengthen lever arm of force length, this be subjected to the restriction of pedal stroke again, and not so the people lifts that pin is too high to cause operation inconvenience.The second, lid close that itself gravity of mat realizes, so in a single day pedal loses external force, lid impacts and the annoying noise of generation down; Under the permanent effect of impulsive force, container and lid are also fragile simultaneously.The 3rd, owing to the gravity of mat lid is closed, so the aperture of lid is unfavorable for putting into and taking out of object less than 90 °.

The purpose of this utility model is to provide a kind of foot-operated lever open-close lid mechanism of novelty, and it only just can be opened lid fully with slight power, and multiple no matter lid itself has, and also need not increase the stroke of pedal.When SELF CL, do not have and impact and the noise generation.

The purpose of this utility model is achieved in that a kind of foot-operated lever open-close lid mechanism that comprises the arm of force and pedal, it is characterized in that being provided with the fork of fixing with the arm of force and rotating around same rotating shaft, long arm end is fixed on lid edge center of gravity symmetric points place and the galianconism end is hinged in the fork top axial slotted hole and the rocking bar that rotates around bolster, the one end retracing spring that the other end links to each other with rocking bar galianconism end or fork top that links to each other with container, one end is by coupling or the direct other end and the long-armed gravitational equilibrium spring that links to each other of rocking bar of linking to each other with container, and the axis of described rotating shaft and bolster is positioned at the same vertical plane surface of container back.

The utility model will be further described below in conjunction with accompanying drawing.

Accompanying drawing is a structural representation of the present utility model.

The utility model comprises pedal 12, the arm of force 11, fork 9, rocking bar 4, gravitational equilibrium spring 7, retracing spring 6 and bolster 3 as shown in drawings.Fork 9 is connected with each other fixing with the arm of force 11 and 10 rotates around the shaft jointly.Fork 9 tops are provided with axial long hole 5.Rocking bar 4 is bearing in bolster 3 Shang And and is divided into long-armed and galianconism two parts.The center of gravity symmetric points A place at lid 1 edge of above-mentioned long-armed top fixed container 2, galianconism is hinged in the axial long hole 5 by bearing pin.Gravitational equilibrium spring 7 one ends are connected the long-armed D point place of fork 9; The other end links to each other with the outer wall of container 2.The other end of above-mentioned gravitational equilibrium spring 7 also can link to each other with the outer wall of container 2 by coupling 8.Coupling 8 comprises base part with negative thread, has externally threaded extensible member and lock nut, by the elastic force of the adjustable bulk wight force balance of screw thread adjustment telescopic spare protruded length spring 7.When lid 1 was in closed condition, gravitational equilibrium spring 7 was in the maximum weighted state, and the moment that its spring tension produces bolster 3 is equal to or slightly less than the moment of the gravity G of lid to bolster 3 generations.Retracing spring 6 one ends link to each other with rear wall or its extended spot of container 2, and the other end links to each other with the galianconism end of rocking bar 4 or the top of fork 9.The axis of bolster 3 and rotating shaft 10 is positioned at the vertical plane surface I-I at container 2 rear wall places jointly.When lid 1 was closed, retracing spring 6 was in the state of the state of not stressing or stressed minimum.When uncapping, executing the power that makes on the pedal with pin with P, because the moment of 7 pairs of bolsters 3 of gravitational equilibrium spring equates the moment of bolster 3 with lid gravity G basically, therefore the P power deformation force that only need overcome retracing spring 6 just can, because retracing spring 6 is very little at the deformation force of the starting stage of opening, so P power need not just can make lid 1 rise very greatly.When rocking bar 4 rotation+α angles, center of gravity G just in time is in vertical plane surface I-I, and center of gravity G is born by bolster 3, and the tension force of gravitational equilibrium spring 7 equals zero or greater than zero.Along with pedal 12 continues to descend, lid 2 centers of gravity are crossed vertical plane surface I-I, and this moment, gravity G was that lid is opened to the moment of bolster 3, and above-mentioned moment and P power overcome the deformation force of retracing spring jointly.Rocking bar 4 is threaded to-and during the α angle, lid 1 is in standard-sized sheet, and the moment of gravity G increases increasing with compensation retracing spring power gradually in this process.This shows that in the whole process of uncapping, the size of P power and gravity G is irrelevant, as long as just lid all can be opened with little P power.When lifting pin, the P power on the pedal 12 disappears, and the moment of 6 pairs of bolsters 3 of retracing spring is oppositely covered lid and closed greater than the moment of gravity G to bolster 3.After center of gravity G crossed vertical plane surface I-I, the identical lid 1 that makes with the effect of retracing spring 6 of its moment to bolster 3 was closed, but along with the closing of lid 1, gravitational equilibrium spring 7 tension force are more and more big, the impact of strong having prevented when lid 1 is closed.

The utility model can also be provided with column 13.Column 13 is fixed on the vertical plane surface I-I place of container 2 rear walls.Bolster 3 and rotating shaft 10 are fixed on the column 13.Like this, container 2 uses the thin-walled material manufacturing to get final product.

The utility model can also can be provided with fork 9, rocking bar 4, bolster 3, gravitational equilibrium spring 7 and retracing spring 6 respectively in the both sides of container symmetrically only in container one side setting.The fork 9 of both sides is fixed in the same rotating shaft 10, can make the switching of lid 1 more stable like this.The arm of force 11 and pedal 12 only are arranged on container one side, captive joint with axle 10.Also the arm of force 11 and the pedal 12 that is fixedly linked with rotating shaft 10 can be set in the container both sides respectively.

Not only opening force is little for the utility model, the lid standard-sized sheet, close outside the shock-free characteristics, still has simple in structure, easily manufactured advantage.

Claims (5)

1, a kind of foot-operated lever open-close lid mechanism that comprises the arm of force and pedal, it is characterized in that being provided with the fork of fixing with the arm of force and rotating around same rotating shaft, long arm end is fixed on lid edge center of gravity symmetric points place and the galianconism end is hinged in the fork top axial slotted hole and the rocking bar that rotates around bolster, the one end retracing spring that the other end links to each other with rocking bar galianconism end or fork top that links to each other with container, one end is by coupling or the direct other end and the long-armed gravitational equilibrium spring that links to each other of rocking bar of linking to each other with container, and the axis of described rotating shaft and bolster is positioned at the same vertical plane surface of container back.

2, foot-operated lever open-close lid according to claim 1 mechanism is characterized in that being provided with the column that is fixed in container back vertical plane surface place, and described rotating shaft and bolster are arranged on this column.

3, foot-operated lever open-close lid according to claim 1 mechanism, it is characterized in that when lid is in closed condition, the tension force of gravitational equilibrium spring is equal to or slightly less than the moment of lid gravity to bolster to the moment of bolster, and retracing spring is in and does not stress or minimum strained condition.

4, according to claim 1,2 or 3 described foot-operated lever open-close lid mechanisms, it is characterized in that described fork, rocking bar, gravitational equilibrium spring, retracing spring, the arm of force and pedal are arranged on a side of container.

5, according to claim 1,2 or 3 described foot-operated lever open-close lid mechanisms, it is characterized in that the both sides of container are provided with fork, rocking bar, gravitational equilibrium spring, retracing spring respectively symmetrically; The fork of both sides is fixed in the same rotating shaft.

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