CN115823812A - Door opening device, control method thereof and refrigerator - Google Patents

Abstract

The invention provides a door opening device, a control method thereof and a refrigerator. The door opener includes: the ejection mechanism is arranged on the box body, and the first end of the ejection mechanism is in butt fit with the door body of the box body; a rotating mechanism; a drive mechanism. According to the door opening device, the control method thereof and the refrigerator, the driving mechanism is utilized to simultaneously drive the ejection mechanism to eject the door body and drive the rotating mechanism to rotate, the problem of complex structure caused by the fact that a propeller and a rotator are required to be arranged independently in the prior art is effectively solved, the utilization rate of devices is effectively improved, the cost of the door opening device is reduced, meanwhile, the clutch mechanism is arranged, the door body can not be driven to rotate when the door body is ejected, the problem that the rotating mechanism is damaged due to the fact that the rotating mechanism directly drives the door body to rotate is avoided, and the reliable operation of the door opening device is guaranteed.

Description

Door opening device, control method thereof and refrigerator

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to a door opening device, a control method thereof and a refrigerator.

Background

The traditional refrigerator generally adopts a manual door opening and closing device, when the door is opened, the door body and the refrigerator body are separated to overcome the sealing suction force of the door body and the refrigerator body door, and therefore, a large force is needed when the door is opened. However, the excessive force is easy to cause the articles on the bottle frame of the door body to topple over, and the children can be accidentally injured. Meanwhile, when the door is closed manually, the phenomenon that the articles on the bottle frame are knocked over or clamped by hands due to the fact that the door is too forcefully violently closed can occur. In addition, when both hands are occupied, the door can not be opened or closed.

Along with the development of the refrigerator industry, the intelligent and humanized design of the refrigerator brings convenience to the life of consumers, and is more and more popular with the consumers, particularly to the refrigerator with the door automatically opened and closed. However, most of automatic door opening and closing refrigerators need to push a door body and a refrigerator body open first, then the door body is rotated to open the door, a propeller needs to be arranged independently to jack the door body and a rotator needs to be arranged to realize automatic door opening and closing, and the inside of the propeller and the rotator needs to be provided with a power part and a transmission structure independently, so that the refrigerator is complicated in structure.

Disclosure of Invention

In order to solve the technical problem that the refrigerator is complex in structure due to the fact that a propeller and a rotator are required to be arranged independently in the prior art, the door opening device with the driving mechanism driving an ejection mechanism and a rotating mechanism to achieve automatic door opening and closing, the control method of the door opening device and the refrigerator are provided.

A door opener, comprising:

the ejection mechanism is arranged on the box body, and the first end of the ejection mechanism is in butt fit with the door body of the box body;

the rotating mechanism is arranged on the box body, and the door body is connected to the rotating mechanism;

the driving mechanism is arranged on the box body and connected with the ejection mechanism, and the driving mechanism is connected with the rotating mechanism through a clutch mechanism.

The driving mechanism comprises a push rod and a sleeve, the push rod is movably arranged in the sleeve, the sleeve is movably arranged on the box body and is connected with the ejection mechanism, and the push rod is connected with the clutch mechanism.

The door opening device further comprises a first limiting structure and a second limiting structure, wherein the first limiting structure and the second limiting structure are movably arranged on the box body, the first limiting structure is in limiting fit with the push rod, and the second limiting structure is in limiting fit with the sleeve.

The door opening device further comprises a connecting rod, the connecting rod is rotatably arranged on the box body, the first limiting structure is arranged at one end of the connecting rod, and the second limiting structure is arranged at the other end of the connecting rod.

The door opening device further comprises a limiting driving structure, the limiting driving structure is arranged on the box body, and the limiting driving structure can drive the first limiting structure to move or drive the second limiting structure to move.

The push rod is provided with a first groove, and the first limiting structure is clamped and matched with the first groove; and/or, be provided with the second recess on the sleeve, second limit structure with the cooperation of second recess joint.

The door opener further comprises a third limiting part and a fourth limiting part, the third limiting part and the fourth limiting part are arranged on the box body, and the sleeve can freely move between the third limiting part and the fourth limiting part.

And a limit switch is arranged on the fourth limiting part and is electrically connected with the clutch mechanism, the first limiting structure and the second limiting structure.

The driving mechanism further comprises a hydraulic supply mechanism, the hydraulic supply mechanism is communicated with the sleeve, and the hydraulic supply mechanism can drive the push rod to retract into or protrude out of the sleeve.

Clutch device includes driving gear, driven gear and connecting piece, the driving gear with driven gear all rotationally set up in on the box, be provided with first transmission rack on the push rod, the driving gear with first transmission rack meshing, driven gear with the slewing mechanism transmission cooperation, the connecting piece is movably set up in on the box, just the driving gear can pass through the connecting piece drives driven gear.

The clutch mechanism is characterized in that a first clamping hole is formed in the driving gear, a second clamping hole is formed in the driven gear, the connecting piece is movably arranged in the first clamping hole and the second clamping hole, and when the clutch mechanism is in a joint state, the connecting piece is in clamping fit with the first clamping hole and the second clamping hole simultaneously.

The clutch mechanism comprises a clutch driving mechanism, the clutch driving mechanism is arranged on the box body, and the clutch driving mechanism can drive the connecting piece to move.

The clutch driving mechanism comprises an electromagnet, the electromagnet is arranged on one side of the connecting piece, and the connecting piece can move under the action of magnetic force generated by the electromagnet.

And a first rotating meshing gear is arranged on a rotating shaft of the door body and is in transmission fit with the driven gear.

The door opening device further comprises a first transmission rod, wherein a first meshing tooth and a second meshing tooth are arranged on the first transmission rod, the first meshing tooth is meshed with the driven gear, and the second meshing tooth is meshed with the first rotating meshing gear.

The door opening device further comprises a first displacement detection mechanism, the first displacement detection mechanism can acquire the displacement of the first transmission rod, and the first displacement detection mechanism is electrically connected with the clutch mechanism and/or the driving mechanism.

The push rod is provided with a second displacement detection mechanism, the second displacement detection mechanism can acquire the displacement of the push rod, and the second displacement detection mechanism is electrically connected with the clutch mechanism and/or the driving mechanism.

The ejection mechanism comprises an ejector rod and a crank driving structure, the crank driving structure is arranged on the box body and is in transmission connection with the driving mechanism, the ejector rod is connected with the crank driving structure, and the ejector rod can protrude out of or retract into the box body.

The crank driving structure comprises a crank gear and a crank connecting rod, the crank gear is rotatably arranged on the box body, a second transmission rack is arranged on the sleeve, the crank gear is meshed with the second transmission rack, one end of the crank connecting rod is connected to the crank gear, and the other end of the crank connecting rod is connected with the ejector rod.

A refrigerator comprises the door opening device.

A control method of the door opening device is provided,

acquiring a control signal, wherein the control signal at least comprises a door opening instruction and a door closing instruction;

and controlling the working states of the driving mechanism and the clutch mechanism according to the control signal.

The driving mechanism includes a push rod and a sleeve, the push rod is movably arranged in the sleeve, the sleeve is movably arranged on the box, the sleeve is connected with the ejection mechanism, the push rod is connected with the clutch mechanism, the door opening device further includes a first limit structure and a second limit structure, the first limit structure and the second limit structure are movably arranged on the box, the first limit structure is in limit fit with the push rod, the second limit structure is in limit fit with the sleeve, the door opening device further includes a third limit part and a fourth limit part, the third limit part and the fourth limit part are arranged on the box, the sleeve can freely move between the third limit part and the fourth limit part, a limit switch is arranged on the fourth limit part, the limit switch is electrically connected with the clutch mechanism, the first limit structure and the second limit structure, and the door opening device is controlled to automatically open the door according to the control signal, the door opening device further includes:

when a door opening instruction is obtained, the push rod is controlled to extend out of the sleeve, the first limiting structure is controlled to be in limiting fit with the push rod, the second limiting structure is controlled to be separated from the sleeve, and the clutch mechanism is controlled to be switched to a separated state;

when a signal that the sleeve triggers the limit switch is acquired, the push rod is controlled to retract into the sleeve, the first limit structure is controlled to be separated from the push rod, the second limit structure is controlled to be separated from the sleeve, and the clutch mechanism is controlled to be switched to a joint state.

The driving mechanism includes a push rod and a sleeve, the push rod is movably arranged in the sleeve, the sleeve is movably arranged on the box, the sleeve is connected with the ejection mechanism, the push rod is connected with the clutch mechanism, the door opening device further includes a first limit structure and a second limit structure, the first limit structure and the second limit structure are movably arranged on the box, the first limit structure is in limit fit with the push rod, the second limit structure is in limit fit with the sleeve, the door opening device further includes a third limit part and a fourth limit part, the third limit part and the fourth limit part are arranged on the box, the sleeve can freely move between the third limit part and the fourth limit part, and the door opening device is controlled to automatically close according to the control signal, further including:

when a door closing instruction is acquired, the push rod is controlled to extend out of the sleeve, the second limiting structure is controlled to be in limiting fit with the sleeve, the first limiting structure is controlled to be disengaged from the push rod, and the clutch mechanism is controlled to be switched to a combined state.

The method further comprises the following steps:

judging whether a user rotates the door body;

if so, the driving mechanism and the clutch mechanism are closed.

In judging whether the user rotates the door body, still include:

acquiring the rotation rate of the door body;

and if the rotating speed rate of the door body is out of the preset range, determining that the user rotates the door body.

Clutch device includes driving gear, driven gear and connecting piece, the driving gear with driven gear all rotationally set up in on the box, be provided with first transmission rack on the push rod, the driving gear with first transmission rack meshing, driven gear with slewing mechanism transmission cooperation, the connecting piece is movably set up in on the box, just the driving gear can pass through the connecting piece drives driven gear, door opener still includes first transmission pole, be provided with first meshing tooth and second meshing tooth on the first transmission pole, first meshing tooth with driven gear meshing, second meshing tooth with first meshing gear meshing, door opener still includes first displacement detection mechanism, first displacement detection mechanism can acquire the displacement of first transmission pole, just first displacement detection mechanism with clutch device and/or the actuating mechanism electricity is connected, in the rotation rate who obtains the door body, still includes:

and acquiring the displacement rate of the first transmission rod, and acquiring the rotation rate of the door body according to the displacement rate of the first transmission rod.

If yes, after the driving mechanism and the clutch mechanism are closed, the method further comprises the following steps:

and when the driving mechanism and the clutch mechanism are closed for a first set time period, controlling the door body to rotate again.

In the control door body rotation again, still include:

acquiring the displacement direction of the first transmission rod;

and determining the rotation direction of the door body according to the displacement direction of the first transmission rod.

Clutch mechanism includes driving gear, driven gear and connecting piece, the driving gear with driven gear all rotationally set up in on the box, be provided with first transmission rack on the push rod, the driving gear with first transmission rack toothing, driven gear with slewing mechanism transmission cooperation, the connecting piece is movably set up in on the box, just the driving gear can pass through the connecting piece drives driven gear, be provided with first joint hole on the driving gear, be provided with second joint hole on the driven gear, the connecting piece is movably set up in first joint hole with second joint hole department when clutch mechanism is in the engaged state, the connecting piece with first joint hole with the cooperation of second joint hole joint simultaneously, after judging the user rotation door body, still include:

if, then control the driving gear rotates to make first joint hole can with the cooperation of connecting piece joint.

Further comprising: and when the door body rotates to the maximum opening, if the door body is not closed within a second preset time period, controlling the door body to be closed.

According to the door opening device, the control method thereof and the refrigerator, the driving mechanism is utilized to simultaneously drive the ejection mechanism to eject the door body and drive the rotating mechanism to rotate, the problem of complex structure caused by the fact that a propeller and a rotator are required to be arranged independently in the prior art is effectively solved, the utilization rate of devices is effectively improved, the cost of the door opening device is reduced, meanwhile, the clutch mechanism is arranged to enable the door body not to be driven to rotate when the door body is ejected, the problem that the rotating mechanism is damaged due to the fact that the rotating mechanism directly drives the door body to rotate is avoided, and the reliable operation of the door opening device is guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of a door opener according to an embodiment of the present invention;

fig. 2 is another schematic structural diagram of a door opener according to an embodiment of the present invention;

fig. 3 is another schematic structural diagram of a door opener according to an embodiment of the present invention;

fig. 4 is another schematic structural diagram of a door opener according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a clutch mechanism according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;

in the figure:

1. a box body; 2. a door body; 31. a push rod; 32. a sleeve; 41. a first limit structure; 42. a second limit structure; 43. a connecting rod; 44. a limiting driving structure; 45. a third limiting member; 46. a fourth limiting member; 51. a driving gear; 52. a driven gear; 53. a connecting member; 54. a clutch drive mechanism; 21. a first rotary engagement gear; 55. a first transmission lever; 56. a first displacement detection mechanism; 33. a second displacement detection mechanism; 61. a top rod; 62. a crank gear; 63. a crank connecting rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The door opening device shown in fig. 1 to 6 includes: the ejection mechanism is arranged on the box body 1, and the first end of the ejection mechanism is in butt fit with the door body 2 of the box body 1; the rotating mechanism is arranged on the box body 1, and the door body 2 is connected to the rotating mechanism; the driving mechanism is arranged on the box body 1 and connected with the ejection mechanism, and the driving mechanism is connected with the rotating mechanism through a clutch mechanism. Utilize actuating mechanism to drive ejection mechanism simultaneously and carry out ejecting operation and drive slewing mechanism to the door body 2 and rotate, the effectual problem that needs set up propeller and rotor alone and the structure is complicated that causes among the prior art of having overcome, effectively improve the device utilization ratio and reduce door opener's cost, set up clutch mechanism simultaneously and can not take the door body 2 to rotate when ejecting to the door body 2, avoid slewing mechanism directly to drive the door body 2 and rotate and cause the problem that slewing mechanism damaged, the reliable operation of door opener has been guaranteed.

When the door body 2 is automatically opened, the clutch mechanism is controlled to be switched to a separation state, the driving mechanism can only drive the ejection mechanism to work, the door body 2 is ejected out of the box body 1, the door body 2 is separated from the limit of the box body 1, then the clutch mechanism is switched to a connection state, the driving mechanism can drive the rotating mechanism to rotate, the door body 2 is continuously driven to rotate, and the purpose of automatically opening the door is achieved.

When the door body 2 is automatically closed, the clutch mechanism is switched to a joint state, and the driving mechanism acts reversely at the moment to further drive the door body 2 to rotate reversely, so that the door body 2 is gradually buckled on the box body 1 and is captured by the box body 1 when the box body 1 is to be closed, and finally the door body 2 is closed.

In one embodiment, the driving mechanism includes a push rod 31 and a sleeve 32, the push rod 31 is movably disposed in the sleeve 32, the sleeve 32 is movably disposed on the box body 1, the sleeve 32 is connected to the ejection mechanism, and the push rod 31 is connected to the clutch mechanism. The push rod 31 is retracted into or protruded out of the sleeve 32, so that the distance between one end of the push rod 31 far away from the sleeve 32 and one end of the sleeve 32 far away from the push rod 31 is changed, and the push-out mechanism can be driven to eject and the rotating mechanism can be driven to rotate by the distance change.

The door opening device further comprises a first limiting structure 41 and a second limiting structure 42, the first limiting structure 41 and the second limiting structure 42 are movably arranged on the box body 1, the first limiting structure 41 is in limiting fit with the push rod 31, and the second limiting structure 42 is in limiting fit with the sleeve 32. When the first limiting structure 41 limits the push rod 31, when the push rod 31 and the sleeve 32 generate relative movement, the push rod 31 cannot move relative to the box 1, so that the sleeve 32 moves relative to the box 1, that is, the driving mechanism generates a size change in the first direction, because the sleeve 32 is in transmission connection with the ejection mechanism, the ejection mechanism acts to eject the door body 2 from the box 1, and when the second limiting structure 42 limits the sleeve 32, when the push rod 31 and the sleeve 32 generate relative movement, the sleeve 32 cannot move relative to the box 1, so that the push rod 31 moves relative to the box 1, that is, the driving mechanism generates a size change in the second direction, because the push rod 31 is connected with the clutch mechanism, when the clutch mechanism is in an engaged state, the push rod 31 can drive the rotating mechanism to rotate, and rotation of the door body 2 is achieved.

The door opening device further comprises a connecting rod 43, the connecting rod 43 is rotatably arranged on the box body 1, the first limiting structure 41 is arranged at one end of the connecting rod 43, and the second limiting structure 42 is arranged at the other end of the connecting rod 43. The rotating shaft of the connecting rod 43 is located in the middle of the connecting rod 43, when the first limiting structure 41 is in limiting fit with the push rod 31 by using the connecting rod 43, the second limiting structure 42 is separated from the sleeve 32, and when the second limiting structure 42 is in limiting fit with the sleeve 32, the first limiting structure 41 is separated from the push rod 31, so that the action reliability of the driving mechanism is ensured.

The door opening device further comprises a limiting driving structure 44, wherein the limiting driving structure 44 is arranged on the box body 1, and the limiting driving structure 44 can drive the first limiting structure 41 to move or drive the second limiting structure 42 to move. The first limiting structure 41 is driven to move through the limiting driving structure 44 so as to realize the limiting matching and the separation of the first limiting structure 41 and the push rod 31, and the second limiting structure 42 is driven to move so as to realize the limiting matching and the separation of the second limiting structure 42 and the sleeve 32.

The push rod 31 is provided with a first groove, and the first limiting structure 41 is in clamping fit with the first groove.

A second groove is formed in the sleeve 32, and the second limiting structure 42 is in clamping fit with the second groove.

As shown in fig. 1, the limiting driving structure 44 is an electromagnet, the electromagnet can attract the second limiting structure 42, so that the second limiting structure 42 is clamped into the second groove, the clamping between the second limiting structure 42 and the sleeve 32 is realized, at the moment, the first limiting structure 41 can be separated from the first groove under the action of the connecting rod 43, and when the electromagnet stops attracting the second limiting structure 42, the spring arranged near the first limiting structure 41 can pull the connecting rod 43, so that the second limiting structure 42 is separated from the second groove, and the first limiting structure 41 is moved towards the inside of the first groove, so that the clamping matching between the first limiting structure 41 and the first groove is realized.

The door opening device further includes a third limiting member 45 and a fourth limiting member 46, the third limiting member 45 and the fourth limiting member 46 are both disposed on the box body 1, and the sleeve 32 can freely move between the third limiting member 45 and the fourth limiting member 46. The third limiting part 45 and the fourth limiting part 46 are used for limiting the moving range of the sleeve 32, when the sleeve 32 abuts against the third limiting part 45 or the fourth limiting part 46, the sleeve 32 cannot move continuously, and at the moment, only the push rod 31 can move, so that the rotating mechanism can be driven, and the door body 2 can be driven to rotate.

The fourth limiting member 46 is provided with a limiting switch, and the limiting switch is electrically connected with the clutch mechanism, the first limiting structure 41, and the second limiting structure 42. When the sleeve 32 triggers the limit switch, the limit switch can send a corresponding signal, the signal can control the clutch mechanism to switch to the engaged state, and simultaneously control the first limit structure 41 to be disengaged from the first groove, at this time, the sleeve 32 abuts against the fourth limit part 46, and when the push rod 31 continues to extend out of the sleeve 32, only the push rod 31 continues to move, so that the door body 2 is driven to rotate.

The driving mechanism further comprises a hydraulic supply mechanism, the hydraulic supply mechanism is communicated with the sleeve 32, and the hydraulic supply mechanism can drive the push rod 31 to retract into or protrude out of the sleeve 32. Use hydraulic pressure as power device, effectively reduce the running noise, promote user experience.

Clutch device includes driving gear 51, driven gear 52 and connecting piece 53, driving gear 51 with driven gear 52 all rotationally set up in on the box 1, be provided with first transmission rack on the push rod 31, driving gear 51 with first transmission rack meshing, driven gear 52 with slewing mechanism transmission cooperation, connecting piece 53 movably set up in on the box 1, just driving gear 51 can pass through connecting piece 53 drives driven gear 52. The driving gear 51 can be rotated by the first transmission rack in the moving process of the push rod 31, when the connecting piece 53 connects the driving gear 51 and the driven gear 52, the driving gear 51 can drive the driven gear 52 to rotate, the driven gear 52 can drive the door body 2 to rotate through the rotating mechanism, and when the connecting piece 53 is separated from the driving gear 51 or the connecting piece 53 is separated from the driven gear 52, the driving gear 51 can independently rotate.

Be provided with first joint hole on the driving gear 51, be provided with second joint hole on the driven gear 52, connecting piece 53 movably set up in first joint hole with second joint hole department when clutching mechanism is in the engaged state, connecting piece 53 with first joint hole with the cooperation of second joint hole joint simultaneously.

As shown in fig. 5, the driving gear 51 and the driven gear 52 are coaxially disposed, the first clamping hole is located at an axis of the driving gear 51, the second clamping hole is located at an axis of the driven gear 52, the first clamping hole and the second clamping hole are communicated along an axis of the driving gear 51, the connecting piece 53 can move along an axis of the driving gear 51, the connecting piece 53 can be partially located in the first clamping hole, and the remaining portion of the connecting piece is located in the second clamping hole, so that the driving gear 51 is connected with the driven gear 52, and can also be completely located in the first clamping hole or completely located in the second clamping hole, thereby achieving the separation of the driving gear 51 and the driven gear 52.

The clutch mechanism comprises a clutch driving mechanism 54, the clutch driving mechanism 54 is arranged on the box body 1, and the clutch driving mechanism 54 can drive the connecting piece 53 to move.

The clutch driving mechanism 54 includes an electromagnet disposed at one side of the connecting member 53, and the connecting member 53 can move under the magnetic force generated by the electromagnet.

A first rotating meshing gear 21 is arranged on a rotating shaft of the door body 2, and the first rotating meshing gear 21 is in transmission fit with the driven gear 52.

The door opener further comprises a first transmission rod 55, wherein a first meshing tooth and a second meshing tooth are arranged on the first transmission rod 55, the first meshing tooth is meshed with the driven gear 52, and the second meshing tooth is meshed with the first rotating meshing gear 21.

The door opening device further comprises a first displacement detection mechanism 56, the first displacement detection mechanism 56 can acquire the displacement of the first transmission rod 55, and the first displacement detection mechanism 56 is electrically connected with the clutch mechanism and/or the driving mechanism. The displacement of the first transmission rod 55 is obtained through the first displacement detection mechanism 56, so that the rotation angle of the door body 2 and the rotation direction of the door body 2 can be obtained, and whether the user rotates the door body 2 can also be judged by judging the displacement change rate of the first transmission rod 55. When a user rotates the door body 2, the clutch mechanism and the driving mechanism are powered off, the driving gear 51 is disengaged from the driven gear 52, the driving mechanism and the like cannot be driven by the rotation of the door body 2 to move, the door body 2 is guaranteed to move reliably, and meanwhile the door opening device is prevented from being damaged under the action of external force.

The push rod 31 is provided with a second displacement detection mechanism 33, the second displacement detection mechanism 33 can acquire the displacement of the push rod 31, and the second displacement detection mechanism 33 is electrically connected with the clutch mechanism and/or the driving mechanism. The second displacement detection mechanism 33 is utilized to determine the displacement of the push rod 31, when the user rotates the door body 2, the driven gear 52 rotates along with the rotation of the door body 2, and at this time, the connecting member 53 cannot cooperate with the driving gear 51, therefore, the driving gear 51 needs to be controlled to rotate, so that the connecting member 53 can cooperate with the driving gear 51 under the action of the clutch driving mechanism 54, and at this time, the push rod 31 can be controlled to move, and when the second displacement detection mechanism 33 obtains the displacement of the push rod 31, the rotation angle of the driving gear 51 is determined, and when the driving gear 51 rotates to a position capable of cooperating with the connecting member 53, the clutch driving mechanism 54 acts, so that the connecting member 53 cooperates with the driving gear 51, and thereby the door body 2 can be driven to rotate correspondingly.

The ejection mechanism comprises an ejector rod 61 and a crank driving structure, the crank driving structure is arranged on the box body 1 and is in transmission connection with the driving mechanism, the ejector rod 61 is connected with the crank driving structure, and the ejector rod 61 can protrude or retract into the box body 1. Utilize crank drive structure to carry out the diversion with the rectilinear movement of sleeve 32, when ejector pin 61 removed the maximum value to the door body 2 direction, sleeve 32's continuation removal can drive ejector pin 61 and remove to the direction of keeping away from the door body 2 to make ejector pin 61 withdraw, avoid ejector pin 61 to bulge all the time and cause the injury to the user.

The crank driving structure comprises a crank gear 62 and a crank connecting rod 63, the crank gear 62 is rotatably arranged on the box body 1, a second transmission rack is arranged on the sleeve 32, the crank gear 62 is meshed with the second transmission rack, one end of the crank connecting rod 63 is connected to the crank gear 62, and the other end of the crank connecting rod is connected with the ejector rod 61. The engagement of the second transmission rack and the crank gear 62 converts the linear motion of the sleeve 32 into circular motion, and the crank connecting rod 63 converts the circular motion into the reciprocating motion of the ejector rod 61, so that the ejection and the retraction of the ejector rod 61 can be realized by the linear motion in a single direction of the sleeve 32.

Because inconvenient setting second transmission rack on the sleeve 32, consequently additionally set up the sleeve extension rod on sleeve 32 to with the setting of second transmission rack on the sleeve extension rod, guarantee that sleeve 32's structure is reliable.

As shown in fig. 1 to 4, fig. 1 is an initial state of the door opening device, at this time, the door body 2 is in a door closing state, at this time, the first limiting structure 41 is clamped in the first groove, and the second limiting structure 42 is disengaged from the second groove, when a door needs to be opened, the door opening device will be switched to the state of completely ejecting the push rod 61 of fig. 2, in this process, because the first limiting structure 41 is clamped and matched with the first groove, when the push rod 31 extends out of the sleeve 32, the sleeve 32 will be forced to move towards the fourth limiting member 46, and at the same time, the second transmission rack is engaged with the crank gear 62, so that the push rod 61 is ejected, at this time, the sleeve 32 is abutted against the fourth limiting member 46 and cannot move continuously, then the first limiting structure 41 is disengaged from the first groove, the push rod 31 retracts into the sleeve 32, because both the push rod 31 and the sleeve 32 are not limited, therefore, the push rod 31 and the sleeve 32 can both move relative to the box 1, the first transmission rack is engaged with the driving gear 51, the clutch driving mechanism 54 drives the connecting piece 53 to move, so that the driving gear 51 is connected with the driven gear 52, the driven gear 52 rotates, the driven gear 52 is engaged with the first engagement tooth, the first transmission rod 55 generates displacement, the second engagement tooth is engaged with the first rotation gear, so as to drive the door body 2 to rotate and open, meanwhile, the sleeve 32 moves to drive the crank gear 62 to rotate, so as to drive the push rod 61 to retract, switch to the position shown in fig. 3, and as the push rod 31 continues, the door body 2 is gradually opened to the maximum opening, and the second limiting structure 42 is clamped into the second groove, at this time, the push rod 61 retracts completely, as shown in fig. 4.

When the door needs to be closed, in the state shown in fig. 4, the push rod 31 extends out of the sleeve 32, and since the sleeve 32 is limited by the second limiting structure 42, at this time, only the push rod 31 can move relative to the box body 1, the first transmission rack drives the driving gear 51 to perform reverse rotation, and meanwhile, the driven gear 52 also performs reverse rotation, so that the door body 2 rotates in a reverse direction, and the closing of the door body 2 is realized.

A refrigerator comprises the door opening device.

The control method of the door opener comprises the following steps:

acquiring control signals, wherein the control signals at least comprise door opening instructions and door closing instructions;

and controlling the working states of the driving mechanism and the clutch mechanism according to the control signal.

The driving mechanism includes a push rod 31 and a sleeve 32, the push rod 31 is movably disposed in the sleeve 32, the sleeve 32 is movably disposed on the box 1, the sleeve 32 is connected with the ejection mechanism, the push rod 31 is connected with the clutch mechanism, the door opening device further includes a first limiting structure 41 and a second limiting structure 42, the first limiting structure 41 and the second limiting structure 42 are both movably disposed on the box 1, the first limiting structure 41 is in limiting fit with the push rod 31, the second limiting structure 42 is in limiting fit with the sleeve 32, the door opening device further includes a third limiting part 45 and a fourth limiting part 46, the third limiting part 45 and the fourth limiting part 46 are both disposed on the box 1, the sleeve 32 can freely move between the third limiting part 45 and the fourth limiting part 46, the fourth limiting part 46 is provided with a limiting switch, the limiting switch is electrically connected with the clutch mechanism, the first limiting structure 41 and the second limiting structure 42, and controls the door opening device to automatically according to the control signal, further including:

when a door opening instruction is obtained, the push rod 31 is controlled to extend out of the sleeve 32, the first limiting structure 41 is controlled to be in limiting fit with the push rod 31, the second limiting structure 42 is controlled to be separated from the sleeve 32, and the clutch mechanism is controlled to be switched to a separated state;

when a signal that the sleeve 32 triggers the limit switch is acquired, the push rod 31 is controlled to retract into the sleeve 32, the first limit structure 41 is controlled to be separated from the push rod 31, the second limit structure 42 is controlled to be separated from the sleeve 32, and the clutch mechanism is controlled to be switched to an engaged state.

The driving mechanism includes a push rod 31 and a sleeve 32, the push rod 31 is movably disposed in the sleeve 32, the sleeve 32 is movably disposed on the box 1, the sleeve 32 is connected to the ejecting mechanism, the push rod 31 is connected to the clutch mechanism, the door opening device further includes a first limiting structure 41 and a second limiting structure 42, the first limiting structure 41 and the second limiting structure 42 are movably disposed on the box 1, the first limiting structure 41 is in limiting fit with the push rod 31, the second limiting structure 42 is in limiting fit with the sleeve 32, the door opening device further includes a third limiting member 45 and a fourth limiting member 46, the third limiting member 45 and the fourth limiting member 46 are disposed on the box 1, and the sleeve 32 can freely move between the third limiting member 45 and the fourth limiting member 46, and in controlling the door opening device to automatically close the door according to the control signal, the door opening device further includes:

when a door closing instruction is obtained, the push rod 31 is controlled to extend out of the sleeve 32, the second limiting structure 42 is controlled to be in limiting fit with the sleeve 32, the first limiting structure 41 is controlled to be separated from the push rod 31, and the clutch mechanism is controlled to be switched to a combined state.

The method further comprises the following steps:

judging whether the user rotates the door body 2;

if yes, the driving mechanism and the clutch mechanism are closed, namely, the automatic door opening or automatic door closing of the door body 2 is interrupted.

In judging whether the user rotates the door body 2, the method further includes:

acquiring the rotation rate of the door body 2;

and if the rotating speed rate of the door body 2 is out of the preset range, determining that the user rotates the door body 2.

Clutch device includes driving gear 51, driven gear 52 and connecting piece 53, driving gear 51 with driven gear 52 all rotationally set up in on the box 1, be provided with first transmission rack on the push rod 31, driving gear 51 with first transmission rack meshing, driven gear 52 with slewing mechanism transmission cooperation, connecting piece 53 movably set up in on the box 1, just driving gear 51 can pass through connecting piece 53 drives driven gear 52, door opener still includes first transfer line 55, be provided with first meshing tooth and second meshing tooth on the first transfer line 55, first meshing tooth with driven gear 52 meshes, second meshing tooth with first rotation meshing gear 21 meshes, door opener still includes first displacement detection mechanism 56, first displacement detection mechanism 56 can acquire the displacement of first transfer line 55, and first displacement detection mechanism 56 with clutch device and/or the actuating mechanism electricity is connected, in the rotation rate who acquires door body 2, still includes:

the displacement rate of the first transmission rod 55 is obtained, and the rotation rate of the door body 2 is obtained according to the displacement rate of the first transmission rod 55.

If yes, after the driving mechanism and the clutch mechanism are closed, the method further comprises the following steps:

and after the driving mechanism and the clutch mechanism are closed for a first set time period, controlling the door body 2 to rotate again, namely executing interrupted door opening and closing actions.

The first set period of time has a value in the range of 10s to 60s, preferably 30s.

In controlling the rotation of the door body 2 again, the method further comprises the following steps:

acquiring the displacement direction of the first transmission rod 55;

the rotating direction of the door body 2 is determined according to the displacement direction of the first transmission rod 55, and then the door body 2 is continuously driven to rotate according to the rotating direction of the door body 2, so that the automatic force continuing function is realized.

Clutch mechanism includes driving gear 51, driven gear 52 and connecting piece 53, the driving gear 51 with driven gear 52 all rotationally set up in on the box 1, be provided with first transmission rack on the push rod 31, the driving gear 51 with first transmission rack meshing, driven gear 52 with slewing mechanism transmission cooperation, connecting piece 53 is movably set up in on the box 1, just driving gear 51 can pass through connecting piece 53 drives driven gear 52, be provided with first joint hole on the driving gear 51, be provided with second joint hole on the driven gear 52, connecting piece 53 is movably set up in first joint hole with second joint hole department when clutch mechanism is in the engaged state, connecting piece 53 with first joint hole with second joint hole joint cooperation simultaneously, whether judge the user rotate the door body 2 after, still include:

if yes, the driving gear 51 is controlled to rotate, so that the first clamping hole can be in clamping fit with the connecting piece 53.

Further comprising: when the door body 2 rotates to the maximum opening, if the door body 2 is not closed within a second preset time period, which indicates that the user forgets to close the door at the moment, the door body 2 is controlled to be closed.

The second preset time is in the range of 1mim to 10min, preferably 3min.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (30)

1. A door opener characterized in that: the method comprises the following steps:

the ejection mechanism is arranged on the box body (1), and the first end of the ejection mechanism is in butt fit with the door body (2) of the box body (1);

the rotating mechanism is arranged on the box body (1), and the door body (2) is connected to the rotating mechanism;

the driving mechanism is arranged on the box body (1), connected with the ejection mechanism and connected with the rotating mechanism through a clutch mechanism.

2. The door opener of claim 1, wherein: the driving mechanism comprises a push rod (31) and a sleeve (32), the push rod (31) is movably arranged in the sleeve (32), the sleeve (32) is movably arranged on the box body (1), the sleeve (32) is connected with the ejection mechanism, and the push rod (31) is connected with the clutch mechanism.

3. The door opener of claim 2, wherein: the door opener further comprises a first limiting structure (41) and a second limiting structure (42), wherein the first limiting structure (41) and the second limiting structure (42) are movably arranged on the box body (1), the first limiting structure (41) is in limiting fit with the push rod (31), and the second limiting structure (42) is in limiting fit with the sleeve (32).

4. The door opener of claim 3, wherein: the door opening device further comprises a connecting rod (43), the connecting rod (43) is rotatably arranged on the box body (1), the first limiting structure (41) is arranged at one end of the connecting rod (43), and the second limiting structure (42) is arranged at the other end of the connecting rod (43).

5. The door opener of claim 4, wherein: the door opening device further comprises a limiting driving structure (44), wherein the limiting driving structure (44) is arranged on the box body (1), and the limiting driving structure (44) can drive the first limiting structure (41) to move or drive the second limiting structure (42) to move.

6. The door opener of claim 4, wherein: a first groove is formed in the push rod (31), and the first limiting structure (41) is in clamping fit with the first groove; and/or, be provided with the second recess on sleeve (32), second limit structure (42) with the cooperation of second recess joint.

7. The door opener of claim 3, wherein: the door opener further comprises a third limiting part (45) and a fourth limiting part (46), the third limiting part (45) and the fourth limiting part (46) are arranged on the box body (1), and the sleeve (32) can freely move between the third limiting part (45) and the fourth limiting part (46).

8. The door opener according to claim 7, wherein: and a limit switch is arranged on the fourth limiting part (46), and the limit switch is electrically connected with the clutch mechanism, the first limiting structure (41) and the second limiting structure (42).

9. The door opener of claim 2, wherein: the driving mechanism further comprises a hydraulic supply mechanism, the hydraulic supply mechanism is communicated with the sleeve (32), and the hydraulic supply mechanism can drive the push rod (31) to retract into or protrude out of the sleeve (32).

10. The door opener of claim 2, wherein: clutch mechanism includes driving gear (51), driven gear (52) and connecting piece (53), driving gear (51) with driven gear (52) all rotationally set up in on box (1), be provided with first transmission rack on push rod (31), driving gear (51) with first transmission rack meshing, driven gear (52) with slewing mechanism transmission cooperation, connecting piece (53) movably set up in on box (1), just driving gear (51) can pass through connecting piece (53) drive driven gear (52).

11. The door opener of claim 10, wherein: be provided with first joint hole on driving gear (51), be provided with second joint hole on driven gear (52), connecting piece (53) movably set up in first joint hole with second joint hole department when clutching mechanism is in the engaged state, connecting piece (53) with first joint hole with the cooperation of second joint hole joint simultaneously.

12. The door opener of claim 10, wherein: the clutch mechanism comprises a clutch driving mechanism (54), the clutch driving mechanism (54) is arranged on the box body (1), and the clutch driving mechanism (54) can drive the connecting piece (53) to move.

13. The door opener of claim 12, wherein: the clutch driving mechanism (54) comprises an electromagnet, the electromagnet is arranged on one side of the connecting piece (53), and the connecting piece (53) can move under the action of magnetic force generated by the electromagnet.

14. The door opener of claim 10, wherein: a first rotating meshing gear (21) is arranged on a rotating shaft of the door body (2), and the first rotating meshing gear (21) is in transmission fit with the driven gear (52).

15. The door opener of claim 14, wherein: the door opener further comprises a first transmission rod (55), wherein a first meshing tooth and a second meshing tooth are arranged on the first transmission rod (55), the first meshing tooth is meshed with the driven gear (52), and the second meshing tooth is meshed with the first rotating meshing gear (21).

16. The door opener of claim 15, wherein: the door opening device further comprises a first displacement detection mechanism (56), the first displacement detection mechanism (56) can acquire the displacement of the first transmission rod (55), and the first displacement detection mechanism (56) is electrically connected with the clutch mechanism and/or the driving mechanism.

17. The door opener of claim 2, wherein: the push rod (31) is provided with a second displacement detection mechanism (33), the second displacement detection mechanism (33) can acquire the displacement of the push rod (31), and the second displacement detection mechanism (33) is electrically connected with the clutch mechanism and/or the driving mechanism.

18. The door opener of claim 2, wherein: the ejection mechanism comprises an ejector rod (61) and a crank driving structure, the crank driving structure is arranged on the box body (1), the crank driving structure is in transmission connection with the driving mechanism, the ejector rod (61) is connected with the crank driving structure, and the ejector rod (61) can protrude out or retract into the box body (1).

19. The door opener of claim 18, wherein: the crank driving structure comprises a crank gear (62) and a crank connecting rod (63), the crank gear (62) is rotatably arranged on the box body (1), a second transmission rack is arranged on the sleeve (32), the crank gear (62) is meshed with the second transmission rack, one end of the crank connecting rod (63) is connected to the crank gear (62), and the other end of the crank connecting rod is connected with the ejector rod (61).

20. A refrigerator, characterized in that: comprising a door opening device according to any one of claims 1 to 19.

21. A control method of a door opening device according to any one of claims 1 to 19, characterized in that: the method comprises the following steps:

acquiring a control signal, wherein the control signal at least comprises a door opening instruction and a door closing instruction;

and controlling the working states of the driving mechanism and the clutch mechanism according to the control signal.

22. The method of claim 21, wherein: the driving mechanism comprises a push rod (31) and a sleeve (32), the push rod (31) is movably arranged in the sleeve (32), the sleeve (32) is movably arranged on the box body (1), the sleeve (32) is connected with the ejection mechanism, the push rod (31) is connected with the clutch mechanism, the door opening device further comprises a first limiting structure (41) and a second limiting structure (42), the first limiting structure (41) and the second limiting structure (42) are movably arranged on the box body (1), the first limiting structure (41) is in limiting fit with the push rod (31), the second limiting structure (42) is in limiting fit with the sleeve (32), the door opening device further comprises a third limiting part (45) and a fourth limiting part (46), the third limiting part (45) and the fourth limiting part (46) are both arranged on the box body (1), the sleeve (32) can freely move between the third limiting part (45) and the fourth limiting part (46), the fourth limiting part (46) is provided with a limit switch, the second limiting structure (41) and the second limiting structure (42) are electrically connected with the automatic door opening switch according to a control signal, and the clutch mechanism is electrically connected with the fourth limiting switch, further comprising:

when a door opening instruction is obtained, the push rod (31) is controlled to extend out of the sleeve (32), the first limiting structure (41) is controlled to be in limiting fit with the push rod (31), the second limiting structure (42) is controlled to be separated from the sleeve (32), and the clutch mechanism is controlled to be switched to a separated state;

when a signal that the sleeve (32) triggers the limit switch is acquired, the push rod (31) is controlled to retract into the sleeve (32), the first limit structure (41) is controlled to be separated from the push rod (31), the second limit structure (42) is controlled to be separated from the sleeve (32), and the clutch mechanism is controlled to be switched to an engaged state.

23. The method of claim 21, wherein: the driving mechanism comprises a push rod (31) and a sleeve (32), the push rod (31) is movably arranged in the sleeve (32), the sleeve (32) is movably arranged on the box body (1), the sleeve (32) is connected with the ejection mechanism, the push rod (31) is connected with the clutch mechanism, the door opening device further comprises a first limiting structure (41) and a second limiting structure (42), the first limiting structure (41) and the second limiting structure (42) are movably arranged on the box body (1), the first limiting structure (41) is in limiting fit with the push rod (31), the second limiting structure (42) is in limiting fit with the sleeve (32), the door opening device further comprises a third limiting part (45) and a fourth limiting part (46), the third limiting part (45) and the fourth limiting part (46) are both arranged on the box body (1), the sleeve (32) can freely move between the third limiting part (45) and the fourth limiting part (46), and the door opening device is controlled according to the control signal, and the door opening device further comprises:

when a door closing instruction is acquired, the push rod (31) is controlled to extend out of the sleeve (32), the second limiting structure (42) is controlled to be in limiting fit with the sleeve (32), the first limiting structure (41) is controlled to be separated from the push rod (31), and the clutch mechanism is controlled to be switched to a combined state.

24. The method of claim 21, wherein: the method further comprises the following steps:

judging whether the user rotates the door body (2);

if so, the driving mechanism and the clutch mechanism are closed.

25. The method of claim 24, wherein: in judging whether the user rotates the door body (2), the method further comprises the following steps:

acquiring the rotation rate of the door body (2);

and if the rotating speed rate of the door body (2) is out of the preset range, determining that the user rotates the door body (2).

26. The method of claim 25, wherein: clutch mechanism includes driving gear (51), driven gear (52) and connecting piece (53), driving gear (51) with driven gear (52) all rotationally set up in on box (1), be provided with first drive rack on push rod (31), driving gear (51) with first drive rack meshes, driven gear (52) with slewing mechanism transmission cooperation, connecting piece (53) movably set up in on box (1), just driving gear (51) can pass through connecting piece (53) drive driven gear (52), door opener still includes first transfer line (55), be provided with first meshing tooth and second meshing tooth on first transfer line (55), first meshing tooth with driven gear (52) meshing, second meshing tooth with first rotation meshing gear (21) meshing, door opener still includes first displacement detection mechanism (56), first displacement detection mechanism (56) can acquire the displacement of first transfer line (55), just first displacement detection mechanism (56) with clutch mechanism (56) and/or the drive mechanism (2) electricity is connected and the door body still includes:

the displacement rate of the first transmission rod (55) is obtained, and the rotation rate of the door body (2) is obtained according to the displacement rate of the first transmission rod (55).

27. The method of claim 25, wherein: if yes, after closing the driving mechanism and the clutch mechanism, the method further comprises the following steps:

and when the driving mechanism and the clutch mechanism are closed for a first set time period, controlling the door body (2) to rotate again.

28. The method of claim 27, wherein: in the rotation of the re-control door body (2), the method further comprises the following steps:

acquiring the displacement direction of the first transmission rod (55);

and determining the rotating direction of the door body (2) according to the displacement direction of the first transmission rod (55).

29. The method of claim 24, wherein: clutch mechanism includes driving gear (51), driven gear (52) and connecting piece (53), driving gear (51) with driven gear (52) all rotationally set up in on box (1), be provided with first drive rack on push rod (31), driving gear (51) with first drive rack meshes, driven gear (52) with slewing mechanism transmission cooperation, connecting piece (53) movably set up in on box (1), just driving gear (51) can pass through connecting piece (53) drive driven gear (52), be provided with first joint hole on driving gear (51), be provided with second joint hole on driven gear (52), connecting piece (53) movably set up in first joint hole with second joint hole department when clutch mechanism is in the engaged state, connecting piece (53) with first joint hole with second joint hole joint cooperation simultaneously, after judging that the user rotates the door body (2), still include:

if yes, the driving gear (51) is controlled to rotate, so that the first clamping hole can be matched with the connecting piece (53) in a clamping mode.

30. The method of claim 21, wherein: further comprising:

when the door body (2) rotates to the maximum opening, if the door body (2) is not closed within a second preset time period, the door body (2) is controlled to be closed.

Images