garbage can

Abstract

A trash can comprises a trash can body, a trash can cover, a foot switch and a feeding mechanism, wherein the trash can body comprises: an outer shell; a cylindrical inner wall arranged inside the outer shell for accommodating trash; and a locking device arranged on the inner side of the trash can body near the top, wherein the trash can cover is pivotally arranged on the top of the trash can body, the foot switch is arranged on the side of the trash can body, and the feeding mechanism is arranged between the outer shell and the cylindrical inner wall, and is characterized in that the feeding mechanism comprises: a trash can cover shaft arranged on the top of the outer shell and serving as a pivot shaft of the trash can cover; a damping mechanism having one end connected to the trash can cover and the other end connected to the cylindrical inner wall; and a release mechanism having one end connected to the trash can cover and the other end connected to the foot switch.

Description

Technical Field

[0001] The present application relates to a trash can. Background Art

[0002] At present, portable trash cans and underground trash cans are usually equipped with a foot switch on the wall of the trash can to control the opening and closing of the trash can lid, so as to avoid secondary pollution caused by the user touching the lid when throwing away the trash. When throwing away the trash, the user only needs to step on the foot switch to automatically open the lid. The connection between the foot switch and the lid usually includes direct mechanical connection, indirect mechanical connection and electrical connection.

[0003] In the case of a direct mechanical connection between the foot switch and the lid, the foot switch is connected to one side of the shaft via a flexible shaft. The lid is fixed to the shaft. The foot switch drives the shaft to rotate via the flexible shaft, thereby realizing the opening and closing of the lid. The problem with this connection method is that the lid opening speed is proportional to the pressing speed of the foot switch, so it is usually faster. The lid has no limit and is easy to hit the user's head. In addition, due to the lack of damping in the connection between the components, the lid swings to a large extent, and when the foot switch is no longer pressed (for example, the user's foot leaves the foot switch), the lid will close quickly, generating air turbulence in the trash can and blowing the lighter garbage out of the bucket.

[0004] In the case where the foot switch is indirectly mechanically connected to the bucket cover, the trash can usually includes a double-layer shell. The foot switch is connected to one end of the rotating shaft through a flexible shaft. A rotating piece is fixed to the middle part of the rotating shaft. The rotating piece is fixed to the bucket cover. The bucket cover can rotate along the long pin. The foot switch drives the rotating shaft and the rotating piece to rotate to lift the bucket cover and rotate the bucket cover along the long pin. The problem with this connection method is that the structure of the double-layer shell is complicated, so the manufacturing cost is high. The transmission mechanism is arranged between the double-layer shells, which is not convenient for inspection and maintenance.

[0005] In the case where the foot switch is electrically connected to the lid, the foot switch is connected to the controller. The controller controls the motor to drive the lid to perform corresponding opening and closing actions when the foot switch is pressed and released. The problem with this connection method is that the working environment of both the movable trash can and the buried trash can is poor for electronic devices, the electric opening failure rate is high, which makes it easy to trigger misoperation, and the controller cannot be used when the power is off.

[0006] Compared with traditional movable trash cans, underground trash cans are usually additionally provided with an electromagnetically actuated locking device to lock the lid and prevent it from being opened when the trash capacity of the underground trash can is close to saturation. After the locking device locks the lid, if there is a direct or indirect mechanical connection between the lid and the foot switch, when the user forcibly presses the foot switch due to ignorance or other reasons, the structural matching gap between the foot switch and the lid will become larger, which will cause the lid to fail to reach the maximum opening angle originally designed when the foot switch is pressed to the maximum extent, or fail to close properly when the foot switch is not pressed. In the prior art, using electronic devices to control the foot switch and the lid separately is a possible solution, but the disadvantages of such a solution are also as mentioned above, that is, whether it is a movable trash can or an underground trash can, its working environment is poor for electronic devices, the electric opening failure rate is high, which leads to easy triggering of misoperation, and the controller cannot be used when the power is off. Summary of the invention

[0007] In order to solve the above technical problems, the present application proposes a trash can, which can relatively isolate the actuation of the foot switch from the opening and closing of the bucket cover without using electronic devices for electrical connection between the foot switch and the bucket cover, so that after the locking device locks the bucket cover, even if the user forcibly presses the foot switch due to ignorance or other reasons, the structural matching clearance of the connection between the foot switch and the bucket cover will not change. As a result, the service life of the feeding mechanism is greatly extended, and it is easy to maintain and not affected by power failure compared with solutions using electronic devices. The trash can of the present application can be used as part of an underground trash can or as a traditional open-air trash can.

[0008] The present application discloses a trash can, comprising a trash can body, a trash can cover, a foot switch and a feeding mechanism, wherein the trash can body comprises: an outer shell; a cylindrical inner wall arranged inside the outer shell for accommodating trash; and a locking device arranged on the inner side of the trash can body near the top, wherein the trash can cover is pivotally arranged on the top of the trash can body, the foot switch is arranged on the side of the trash can body, and the feeding mechanism is arranged between the outer shell and the cylindrical inner wall, and is characterized in that the feeding mechanism comprises: a trash can cover rotating shaft arranged on the top of the outer shell and serving as a pivot shaft of the trash can cover; a damping mechanism having one end connected to the trash can cover and the other end connected to the cylindrical inner wall; and a release mechanism having one end connected to the trash can cover and the other end connected to the foot switch.

[0009] According to an optional embodiment, the feeding mechanism includes: a first connecting member connected between the release mechanism and the foot switch; and a second connecting member connected between the release mechanism and the barrel cover.

[0010] According to an optional embodiment, the release mechanism is a tension spring and is configured to extend when the tension at both ends thereof is greater than a critical tension, wherein the critical tension is greater than the force acting on the barrel lid through the second connecting member to open it when the barrel lid is not locked, and the first connecting member and the second connecting member are inextensible flexible ropes to transmit force and bend in the barrel body to adapt to the internal structure of the barrel body.

[0011] According to an optional embodiment, the feeding mechanism includes: a first connecting member connected between the release mechanism and the foot switch.

[0012] According to an optional embodiment, the release mechanism is a torque spring, one torsion arm of which is fixed to the barrel cover and the other torsion arm is connected to the first connecting member, and is configured to twist when the torque borne by its two ends is greater than a critical torque, wherein the critical torque is greater than the torque acting on the barrel cover by the release mechanism to open it when the barrel cover is not locked, and the first connecting member is an inextensible flexible rope to transmit force and bend in the barrel body to adapt to the internal structure of the barrel body.

[0013] According to an optional embodiment, the foot switch includes: a foot pedal shaft arranged in the barrel body; a pedal pivotally connected to the foot pedal shaft, wherein a portion of the pedal extends to the outside of the barrel body; a return spring connected between the pedal and the barrel body; and a limiting member fixed on the inner side of the outer shell, for limiting the movable range of the pedal.

[0014] According to an optional embodiment, the limiting member includes a limiting screw configured to adjust the position by screwing.

[0015] According to an alternative embodiment, the locking device is an electromagnetic lock.

[0016] According to an alternative embodiment, the bucket cover or a part thereof is made of a material that can be influenced by magnetic forces.

[0017] According to an optional embodiment, the barrel cover includes: a display device arranged on the outer surface of the barrel cover, for displaying information related to the locking state of the barrel cover; and a handle arranged near the edge of the barrel cover on the side opposite to the barrel cover rotation axis, for manually lifting the barrel cover.

[0018] With the trash can of the present application, the actuation of the foot switch and the opening and closing of the bucket cover are relatively independent, and no electronic device is used to electrically connect the foot switch and the bucket cover, so that after the locking device locks the bucket cover, even if the user forcibly presses the foot switch due to ignorance or other reasons, the structural matching clearance of the connection between the foot switch and the bucket cover will not change. As a result, the service life of the feeding mechanism is greatly extended, and compared with the solution using electronic devices, it is easy to maintain and is not affected by power failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Embodiments of the present application will now be described in further detail with reference to the accompanying drawings, in which:

[0020] Figure 1 is a three-dimensional diagram of a trash can according to the present application.

[0021] Figure 2 yes Figure 1 A cross-sectional view of a trash can with the lid in a closed position and the locking device unlocked.

[0022] Figure 3 yes Figure 1 A cross-sectional view of a trash can with the lid in an open state and the locking device unlocked.

[0023] Figure 4 yes Figure 1 A cross-sectional view of a trash can with the lid in a closed position and the locking device locked.

[0024] Figure 5 yes Figure 1 A sectional view of a trash can, wherein the lid is in an open state and the locking device is not locked, and the lid is lifted by means of a carrying handle.

[0025] Figure 6 is a cross-sectional view of another embodiment of a trash can according to the present application. DETAILED DESCRIPTION

[0026] The embodiments of the present application described herein are defined as trash cans, which can be put into practice in the embodiments described below. However, these embodiments can be illustrated and implemented in many different forms and are not limited to the embodiments set forth herein. The application is not limited to the disclosed embodiments. On the contrary, these illustrative embodiments of the embodiments are provided so that the application will be thorough and complete.

[0027] In this application, unless otherwise specified, directional words such as "up, down, left, right" generally refer to up, down, left, right as shown in the reference drawings; "inside and outside" refer to inside and outside relative to the outline of each component itself.

[0028] Figure 1 1 is a three-dimensional diagram of a trash can according to the present application. The trash can 1 comprises a body 11, a cover 12, a pedal switch 13 and a feeding mechanism 14 (not shown in the figure).

[0029] Figure 2 yes Figure 1The sectional view of the trash can. The body 11 includes: an outer shell 111; a cylindrical inner wall 112 disposed inside the outer shell for containing trash; and a locking device 113 disposed on the inner side of the body 11 near the top. The outer shell 111 has a removable back plate, which can be removed when necessary to expose the components in the outer shell 111, so as to facilitate maintenance personnel to repair or replace. The cover 12 is pivotally disposed on the top of the body 11. The foot switch 13 is disposed on the side of the body 11.

[0030] Specifically, in the present embodiment, the locking device 113 is an electromagnetic lock, which generates magnetic force to attract and fix the barrel cover 12 when powered, thereby locking the barrel cover 12 to prevent it from opening.

[0031] Specifically, the barrel cover 12 includes: a display device 121 disposed on the outer surface of the barrel cover 12, for displaying information related to the locking state of the barrel cover 12; and a handle 122 disposed near the edge of the barrel cover 12 on the side opposite to the barrel cover rotation shaft 141. The display device 121 may include a backlight component to prominently display relevant content in the dark. The handle 122 is used to manually lift the barrel cover 12 to open the barrel cover 12 when the foot switch 13 fails or is inconvenient to reach. In order to be attracted and fixed by the magnetic force generated by the locking device 113, the barrel cover 12 or a part thereof is made of a material that can be affected by the magnetic force.

[0032] Specifically, the feeding mechanism 14 includes: a barrel cover rotating shaft 141 disposed at the top of the shell 111 and serving as a pivot shaft of the barrel cover 12; a damping mechanism 142 connected to the barrel cover 12 at one end and to the cylindrical inner wall 112 at the other end; and a release mechanism 143 connected to the barrel cover 12 at one end and to the foot switch 13 at the other end. The damping mechanism 142 is connected between the barrel cover 12 and the barrel body 11 to provide damping to the barrel cover 12, so that the movement resistance becomes larger and the movement speed becomes slower when it is close to the closed position, thereby protecting the barrel body 11 from being hit by the barrel cover 12. One advantage of avoiding the barrel cover 12 from closing too quickly is that air turbulence will not be generated inside the barrel body 11 to blow the lighter garbage out of the barrel. The release mechanism 143 is connected between the barrel cover 12 and the foot switch 13 to convert the pressing (stepping) and release of the foot switch 13 into the opening and closing of the barrel cover 12. The damping mechanism 142 may be a damping spring or a hydraulic damper.

[0033] Specifically, the foot switch 13 includes: a foot rotating shaft 131 disposed in the barrel body 11; a pedal 132 pivotally connected to the foot rotating shaft 131, wherein a portion of the pedal 132 extends outside the barrel body 11; a return spring 133 connected between the pedal 132 and the barrel body 11; and a limiting member 134 fixed to the inner side of the housing 111, for limiting the range of motion of the pedal 132. When the pedal 132 is not stepped on or pressed in other ways, it is in the first position under the joint action of the return spring 133 and the limiting member 134, such as Figure 2 When the pedal 132 is stepped on or otherwise pressed, it pivots from the first position to the second position and stays at the second position due to being blocked by the stop member 134, as shown in FIG. Figure 3 As shown, the return spring 133 is stretched at this time. After the pressure on the pedal 132 disappears, it returns to the first position with the help of the return spring 133. Since the damping mechanism 142 is easily damaged when it is in its ultimate tension state for a long time, the limiting member 134 is configured so that when the pedal 132 pivots to the second position, the damping mechanism 142 has not yet reached its ultimate tension state. To this end, the limiting member 134 includes a limiting screw that can be adjusted by screwing.

[0034] In this embodiment, the feeding mechanism 14 further includes: a first connecting member 144 connected between the release mechanism 143 and the pedal 132; and a second connecting member 145 connected between the rear end of the barrel cover 12 and the release mechanism 143. In this embodiment, the first connecting member 144 and the second connecting member 145 are inextensible flexible ropes to transmit force and can be bent in the barrel body 11 to adapt to the internal structure of the barrel body 11.

[0035] In the present embodiment, the release mechanism 143 is a tension spring and is configured to extend when the tension at both ends thereof is greater than the critical tension. The critical tension is greater than the force acting on the barrel cover 12 through the second connecting member 145 to open it when the barrel cover 12 is not locked. The advantage of this configuration of the release mechanism 143 is that when the barrel cover 12 is not locked, the process of converting the pressing (stepping) and release of the foot switch 13 into the opening and closing of the barrel cover 12 is not affected; and when the barrel cover 12 is locked so that its position cannot be changed, the pressing (stepping) of the foot switch 13 is independent of the opening and closing of the barrel cover 12, that is, the pressing (stepping) of the foot switch 13 does not directly transmit the force applied to the pedal 132 to the barrel cover 12, but is buffered and absorbed by the release mechanism 143, resulting in the extension of the release mechanism 143, so that the force finally transmitted to the barrel cover 12 is only the force to maintain the current length of the release mechanism 143. The advantage of this is that after the locking device 113 locks the barrel cover, even if the user presses (steps on) the pedal 132 due to ignorance (for example, not seeing the information displayed on the display device 121) or other reasons, the structural matching clearance between the pedal 132, the barrel cover rotating shaft 141 and the barrel cover 12 will not change. As a result, the service life of the feeding mechanism 14 is greatly extended, and compared with the solution using electronic devices, it is easy to maintain and is not affected by power failure.

[0036] The states of the feeding mechanism 14 include at least the following four states. Figure 2-Figure 5 Take this as an example to illustrate.

[0037] exist Figure 2 In the normally closed state shown, the barrel cover 12 is in a closed state, and the locking device 113 is not locked. At this time, the damping mechanism 142 is in a contracted state, the release mechanism 143 is in a contracted state, and the return spring 133 is in a contracted state.

[0038] exist Figure 3 In the normal opening state shown, the barrel cover 12 is in the open state and the locking device 113 is not locked. When the user presses (e.g., steps on) the pedal 132, the return spring 133 is stretched, thereby pulling the release mechanism 143 with the help of the first connecting member 144. Since the locking device 113 is not locked, the tension acting on the release mechanism 143 is less than the critical tension, causing the release mechanism 143 to remain in a contracted state, and then pulling the second connecting member 145. The second connecting member 145 pulls the rear end of the barrel cover 12, so that the barrel cover 12 pivots along the barrel cover rotating shaft 141 to open the barrel cover 12. During the opening of the barrel cover 12, the damping mechanism 142 is pulled open. When the user no longer presses the pedal 132, for example, after the user's foot leaves the pedal 132, the barrel cover 12 is closed at a substantially uniform speed under the influence of the damping mechanism 142 and its own weight. The pedal 132 returns to its original state under the contraction of the return spring 133.

[0039] exist Figure 4 In the locked state shown, the bucket cover 12 is in a closed state and the locking device 113 is locked. When the user presses (e.g., steps on) the pedal 132, the return spring 133 is stretched, thereby pulling the release mechanism 143 with the help of the first connecting member 144. Since the locking device 113 is locked, the tension acting on the release mechanism 143 will gradually increase and eventually exceed the critical tension, causing the release mechanism 143 to be pulled open. As a result, the pedal 132 is smoothly stepped on, and the bucket cover 12 is still in a closed state. In this way, the position change of the pedal 132 is independent of the bucket cover 12, the bucket cover shaft 141 and the damping mechanism 142, that is, the position change of the pedal 132 will not transmit force to the bucket cover 12, the bucket cover shaft 141 and the damping mechanism 142. The technical effect of this is that after the locking device 113 locks the barrel cover, even if the user presses the pedal 132 due to ignorance (for example, not seeing the information displayed on the display device 121) or other reasons, the structural matching clearance between the pedal 132, the barrel cover rotating shaft 141 and the barrel cover 12 will not change. As a result, the service life of the feeding mechanism 14 is greatly extended, and compared with the solution using electronic devices, it is easy to maintain and is not affected by power failure.

[0040] exist Figure 5 In the manual opening state shown, the bucket cover 12 is in the open state and the locking device 113 is not locked. When the bucket cover 12 is manually lifted, for example, by means of the handle 122, the damping mechanism 142 is stretched. The release mechanism 143 moves downward as a whole under the action of its own weight and is in a retracted state. The pedal 132 remains stationary under the action of the return spring 133 because the displacement is absorbed by the first connecting member 144.

[0041] Specifically, the state of the feeding mechanism 14 involves the following moments: the moment MA relative to the barrel cover rotating shaft generated by the deadweight of the barrel cover 12; the moment MB relative to the barrel cover rotating shaft 141 generated by the damping mechanism 142; the moment MC relative to the barrel cover rotating shaft 141 generated by the release mechanism 143; the moment MD relative to the barrel cover rotating shaft 141 generated by the locking device 113; the moment ME relative to the pedal rotating shaft 131 generated by the return spring 133; the moment MF relative to the pedal rotating shaft 131 generated by the deadweight of the pedal 132; the moment MG (variable value) relative to the pedal rotating shaft 131 generated by the pedal 132 being pressed. The relationship between the moments is: MD>MC>MA>MB and ME>MF. When the locking device 113 is not locked, if MC>MG>MA, the barrel cover 12 is opened normally. When the locking device 113 is locked, if MD>MG>MC, the barrel cover 12 is still in a closed state under the action of the locking device 113. When the tension on the release mechanism 143 exceeds a critical value, the release mechanism 143 is pulled open to absorb the amount of downward displacement transmitted by the pedal 132 .

[0042] Figure 6 is a cross-sectional view of another embodiment of the trash can according to the present application. Figure 2 Compared with the implementation method, Figure 6The difference between the embodiments of the present invention and the embodiment of the present invention is that the feeding mechanism 14 includes a first connecting member 144 connected between the release mechanism 143 and the foot switch 13. The release mechanism 143 is a torque spring, one torsion arm of which is fixed to the barrel cover 12, and the other torsion arm is connected to the first connecting member 144, and is configured to twist when the torque borne by its two ends is greater than the critical torque. The critical torque is greater than the torque acting on the barrel cover 12 by the release mechanism 143 to open it when the barrel cover 12 is not locked. The first connecting member 144 is an inextensible flexible rope to transmit force and bends in the barrel body 11 to adapt to the internal structure of the barrel body 11. The advantage of this structure of the release mechanism 143 is that when the barrel cover 12 is not locked, the process of converting the pressing (stepping) and releasing of the foot switch 13 into the opening and closing of the barrel cover 12 is not affected; and when the barrel cover 12 is locked so that its position cannot be changed, the pressing (stepping) of the foot switch 13 is independent of the opening and closing of the barrel cover 12, that is, the pressing (stepping) of the foot switch 13 will not directly transfer the force applied to the pedal 132 to the barrel cover 12, but will be buffered and absorbed by the release mechanism 143, causing the release mechanism 143 to twist, so that the force finally transmitted to the barrel cover 12 is only the force to maintain the current twisting state of the release mechanism 143. The advantage of this is that after the locking device 113 locks the barrel cover, even if the user presses (steps) the pedal 132 due to ignorance (for example, not seeing the information displayed on the display device 121) or other reasons, the structural matching clearance of the connection between the pedal 132, the barrel cover shaft 141 and the barrel cover 12 will not change. As a result, the service life of the feeding mechanism 14 is greatly extended, and compared with a solution using electronic components, it is easy to maintain and is not affected by power failure.

[0043] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. As used herein, the term "or" is to be interpreted as a mathematical OR, i.e., an inclusive disjunction; not as a mathematical exclusive OR (XOR), unless expressly stated otherwise. In addition, the singular forms "a", "an" and "the" are to be interpreted as "at least one", and therefore, unless expressly stated otherwise, multiple entities of the same kind may also be included. It will also be understood that the terms "comprises" and "comprising" specify the presence of the stated features, actions, wholes, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, actions, wholes, steps, operations, elements, parts and / or groups thereof. The fact that certain measures are recited in mutually different dependent claims does not mean that a combination of these measures cannot be used to advantage.

Claims

1. A trash can, comprising a trash can body (11), a trash can cover (12), a foot switch (13) and a feeding mechanism (14), in, The barrel body (11) comprises: an outer shell (111); a cylindrical inner wall (112) arranged inside the outer shell for accommodating garbage; and a locking device (113) arranged on the inner side of the barrel body (11) near the top. The barrel cover (12) is pivotally arranged on the top of the barrel body (11), the foot switch (13) is arranged on the side of the barrel body (11), and the feeding mechanism (14) is arranged between the outer shell (111) and the cylindrical inner wall (112). It is characterized in that The feeding mechanism (14) comprises: A barrel cover rotating shaft (141) disposed on the top of the housing (111) and serving as a pivot shaft of the barrel cover (12); A damping mechanism (142) connected at one end to the barrel cover (12) and at the other end to the cylindrical inner wall (112); a release mechanism (143) connected at one end to the barrel cover (12) and at the other end to the foot switch (13); a first connecting member (144) connected between the release mechanism (143) and the foot switch (13); and A second connecting member (145) connected between the release mechanism (143) and the barrel cover (12); in, The release mechanism (143) is a tension spring and is configured to extend when the tension at both ends thereof is greater than a critical tension, wherein the critical tension is greater than the force acting on the barrel cover (12) through the second connecting member (145) to open the barrel cover (12) when the barrel cover (12) is not locked, and The first connecting member (144) and the second connecting member (145) are inextensible flexible ropes for transmitting force and bending in the barrel body (11) to adapt to the internal structure of the barrel body (11).

2. The trash can according to claim 1, characterized in that: The foot switch (13) comprises: A pedal shaft (131) disposed in the barrel body (11); A pedal (132) pivotably connected to the pedal shaft (131), wherein a portion of the pedal (132) extends outside the barrel (11); a return spring (133) connected between the pedal (132) and the barrel (11); and The limiting component (134) fixed on the inner side of the housing (111) is used to limit the range of movement of the pedal (132).

3. The trash can according to claim 2, characterized in that: The limiting member (134) includes a limiting screw configured to adjust the position by screwing.

4. The trash can according to any one of claims 1 to 3, characterized in that: The locking device (113) is an electromagnetic lock.

5. The trash can according to claim 4, characterized in that: The barrel cover (12) or a part thereof is made of a material that can be affected by magnetic force.

6. The trash can according to any one of claims 1 to 3, characterized in that: The barrel cover (12) comprises: a display device (121) disposed on the outer surface of the barrel cover (12), used for displaying information related to the locking state of the barrel cover (12); and A handle (122) is arranged near the edge of the barrel cover (12) on the side opposite to the barrel cover rotation axis (141) and is used to manually lift the barrel cover (12).

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