CN112212595A

CN112212595A - A kind of refrigerator

Info

Publication number: CN112212595A
Application number: CN201910632124.4A
Authority: CN
Inventors: 张树栋; 李利云; 申乃雨; 朱宇翔
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Refrigerator Co Ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2021-01-12
Anticipated expiration: 2039-07-12
Also published as: CN112212595B

Abstract

The invention discloses a refrigerator, relates to the technical field of refrigeration, and aims to provide a refrigerator which can ensure that a door body can be automatically opened and the appearance can be ensured to be attractive. The refrigerator includes that inside is formed with the box of storeroom and the door body of setting at the opening part of storeroom, installs the articulated slab on the box, and the articulated slab passes through the articulated shaft and rotates with the door body to be connected, still includes the switch door gear, and the top of the door body is formed with the extension that surpasss the top of box, is formed with the installation cavity in the extension, and the switch door gear sets up in the installation cavity, and the switch door gear includes: a drive mechanism; and the driving mechanism is used for driving the ejection mechanism to move so as to eject the door body. The refrigerator is used for ensuring the attractive appearance of the refrigerator on the basis of enabling the refrigerator to have an automatic door opening function.

Description

A kind of refrigerator

Technical Field

The invention relates to the technical field of refrigeration, in particular to a refrigerator.

Background

Along with the improvement of the living standard of residents, the refrigerator becomes a necessary household appliance product for families, the volume of the refrigerator also begins to be continuously enlarged, the door body of the refrigerator is heavier and heavier, the refrigerator door body is aggravated, people cannot conveniently open the refrigerator door, and particularly, the old and children have a great problem that how to realize easy door opening becomes a trouble for numerous consumers and refrigerator manufacturers.

According to the refrigerator in the prior art, a door opening and closing device is adopted to automatically open and close a refrigerator door, and referring to fig. 1 and 2, the existing door opening and closing device comprises a door opening and closing device 03 arranged on a refrigerator body 01, wherein the door opening and closing device 03 is an ejection mechanism and can eject a door body 02 towards a direction far away from the refrigerator body 01. Because the door opening and closing device 03 is arranged at the top of the box body 01, the top of the door opening and closing device 03 is higher than the top of the door body 02, so that the appearance attractiveness of the whole refrigerator is obviously reduced, and the experience of a user is further influenced.

Disclosure of Invention

The embodiment of the invention provides a refrigerator, and mainly aims to provide a refrigerator which can ensure that a door body can be automatically opened and the attractive appearance can be ensured.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

the embodiment of the invention provides a refrigerator, which comprises a refrigerator body and a door body, wherein a storage chamber is formed in the refrigerator body, the door body is arranged at an opening of the storage chamber, a hinged plate is installed on the refrigerator body and is rotatably connected with the door body through a hinged shaft, the refrigerator also comprises a door opening and closing device, an extending part which exceeds the top of the refrigerator body is formed at the top of the door body, an installation cavity is formed in the extending part, the door opening and closing device is arranged in the installation cavity, and the door opening and:

a drive mechanism;

and the driving mechanism is used for driving the ejection mechanism to move so as to eject the door body.

According to the refrigerator provided by the embodiment of the invention, the door opening and closing device is arranged in the installation cavity formed by the extension part of the door body, compared with the prior art, the door opening and closing device is hidden in the door body, and the phenomenon that the door opening and closing device protrudes out of the top of the door body to influence the overall appearance attractiveness of the refrigerator when the door opening and closing device is arranged at the top of the refrigerator body is avoided.

Drawings

Fig. 1 is a schematic structural view of a refrigerator having a door opening and closing apparatus according to the related art;

FIG. 2 is another perspective view of FIG. 1;

fig. 3 is an external perspective view of a refrigerator according to an embodiment of the present invention;

FIG. 4 is an enlarged view of FIG. 3 at A;

fig. 5 is a schematic structural diagram of a door opening and closing device according to an embodiment of the present invention;

FIG. 6 is an exploded view of FIG. 5;

fig. 7 is a schematic diagram illustrating a connection relationship between a driving mechanism and an ejection mechanism according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of an ejection mechanism according to an embodiment of the present invention, in which a push rod is in a retracted position;

fig. 9 is a schematic structural view of a push rod in an extended position in an ejection mechanism according to an embodiment of the present invention;

fig. 10 is a schematic view illustrating a connection relationship between a driving mechanism, a clutch and a rotating mechanism according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention, in which a door is in a closed state;

fig. 12 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention, in which a door body is in an open state;

FIG. 13 is a schematic structural diagram of an assist mechanism according to an embodiment of the present invention;

FIG. 14 is an exploded view of a portion of the structure of FIG. 13;

FIG. 15 is an exploded view of FIG. 13;

fig. 16 is a schematic view of an operating state of an absorption assisting mechanism in a closing process of a door body according to an embodiment of the present invention;

fig. 17 is a schematic view of an operating state of an absorption assisting mechanism in a closing process of a door body according to an embodiment of the present invention;

FIG. 18 is a schematic view of an operation state of the suction aid mechanism when the door body is closed according to the embodiment of the present invention;

FIG. 19 is a schematic view of an operation state of an absorption assisting mechanism during a door opening process according to an embodiment of the present invention;

FIG. 20 is a schematic view of an operation state of an absorption assisting mechanism during a door opening process according to an embodiment of the present invention;

FIG. 21 is a schematic view of the connection relationship between the connection shaft, the cam, the follower and the microswitch provided by the embodiment of the present invention;

FIG. 22 is a schematic structural diagram of a guiding mechanism according to an embodiment of the present invention;

FIG. 23 is a schematic view of the operation of a cam, a follower and a microswitch according to an embodiment of the present invention;

FIG. 24 is a schematic view of the operation of a cam, follower and microswitch provided by the embodiment of the invention;

fig. 25 is a schematic view of the working states of a cam, a follower and a microswitch provided by the embodiment of the invention.

Detailed Description

The refrigerator according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "central", "upper", "lower", and "upper" are used herein,

The directional or positional relationships "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are indicative of those directions or positional relationships illustrated in the drawings, merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Referring to fig. 3 and 4, an embodiment of the invention provides a refrigerator, which comprises a refrigerator body 1 with a storage chamber formed therein and a door body 2 arranged at an opening of the storage chamber, wherein a hinge plate 3 is installed on the refrigerator body 1, and the door body 2 is rotatably connected with the refrigerator body 1 through a hinge shaft 4. In order to realize the automatic opening and closing of the door body 2, the refrigerator provided by the embodiment of the invention further comprises a door opening and closing device, an extension part which exceeds the top of the refrigerator body 1 is formed at the top of the door body 2, a mounting cavity 201 is formed in the extension part, and the door opening and closing device is arranged in the mounting cavity 201, wherein, referring to fig. 6, the door opening and closing device comprises: the driving mechanism 5 is used for driving the ejection mechanism 7 to move so as to eject the door body 2.

Referring to fig. 4, an installation cavity 201 is formed above a door seal (the door seal is used for ensuring the sealing performance between the closed door 2 and the refrigerator body 1 and ensuring the refrigeration effect of the refrigerator) of the door 2, and the door opening and closing device is arranged in the installation cavity 201. In the field, the hinge plate 3 is generally installed on the top of the refrigerator body 1, in order to prevent the hinge plate 3 from being obviously viewed when the refrigerator is viewed from the front side of the refrigerator, the top of the door body 2 is higher than the top of the refrigerator body 1, so that an extending part for shielding the hinge plate 3 is formed above a door seal of the door body 2, and the hinge plate 3 is shielded by the extending part, thereby improving the appearance attractiveness of the refrigerator.

According to the door opening and closing device provided by the embodiment of the invention, the extension part of the existing door body 2, which is higher than the top of the refrigerator body 1, is fully utilized, and the door opening and closing device is arranged in the installation cavity 201 formed in the extension part, so that the arrangement position of the door opening and closing device is more hidden, and the extension part is positioned above the door seal of the door body, therefore, the refrigerator provided by the embodiment of the invention has the advantages that the sealing effect between the door body 2 and the refrigerator body 1 is ensured, and the door opening and closing device is exposed to the outside on the premise that the refrigerator has an automatic door opening and closing function, and the appearance attractiveness of the refrigerator is.

The driving mechanism 5 and the ejection mechanism 7 provided in the embodiment of the present invention may be disposed at a position close to the hinge shaft 4 (as shown in fig. 4), and may be disposed at a position away from the hinge shaft 4.

Referring to fig. 7, the drive mechanism 5 includes: referring to fig. 4, an output shaft of the driving motor 501 is parallel to a width direction L1 of the door body 2, and the driving wheel 502 is mounted on the output shaft of the driving motor 501 and is in transmission connection with the ejection mechanism 7 and the rotating mechanism 8, respectively. That is, the driving motor 501 is horizontally disposed in the installation cavity 201, so that a large space in the width direction of the door body 2 is also fully utilized.

In order to realize automatic opening and closing of the door body with ease and increase output torque, referring to fig. 5, the driving mechanism 5 according to the embodiment of the present invention further includes a transmission 503, the transmission 503 is mounted on the output shaft of the driving motor 501, the transmission 503 is configured to increase torque of the output shaft of the driving motor 501, and an output end of the transmission 503 is connected to the driving wheel 502.

In some embodiments, referring to fig. 6 and 7, the ejection mechanism 7 comprises: the driven wheel 701 is meshed with the driving wheel 502, the push rod 702 is arranged on the mounting seat 6 and can slide between a contraction position and an extension position, referring to fig. 4, the sliding direction of the push rod 702 is parallel to the thickness direction L2 of the door body 2, and the push rod 702 is provided with a transmission gear which is arranged along the extension direction and is meshed with the driven wheel 701. When the door body 2 needs to be opened, the driven wheel 701 is driven by the driving wheel 502, and the push rod 702 is driven to move towards the direction of the box body 1 along the thickness direction of the door body 2, and when the end of the push rod 702 abuts against the box body 1, thrust is generated on the box body 1, of course, due to the reaction force, the box body 1 can generate thrust with equal acting force and opposite direction on the door body 2, and under the reaction force of the box body 1 on the push rod 702, the door body 2 is pushed open.

Since the push rod 702 is also disposed in the installation cavity 201, in order to facilitate the push rod 702 to apply a pushing force to the box body 1, referring to fig. 4, a avoiding hole 202 for the push rod 702 to extend out is formed on a side wall of the door body 2 close to the box body 1. When the door body 2 needs to be opened, the push rod 702 extends out of the avoiding hole 202, and when the door body 2 is closed, the push rod 702 contracts into the installation cavity 201 along the avoiding hole 202, so that the appearance attractiveness of the whole refrigerator is guaranteed.

In order to make the whole door opening and closing device more compact, referring to fig. 6, the mounting base 6 includes a first mounting portion 601 and a second mounting portion 602 which are vertically arranged, the driving motor 501, the driving pulley 502, the transmission 503 and the driven pulley 701 may be mounted on the first mounting portion 601, and the push rod 702 may be slidably mounted on the second mounting portion 602. Therefore, the installation position is provided for the driving mechanism and the ejection mechanism through the installation seat 6, so that the structure of the whole door opening and closing device is centralized as much as possible, and the occupied space is reduced.

The sliding manner of the push rod 702 on the second mounting portion 602 has many cases, for example, the second mounting portion 602 of the mounting seat 6 is provided with a guiding rib, and the corresponding push rod 702 is provided with a guiding groove, so that the sliding of the push rod 702 is realized through the matching of the guiding groove and the guiding rib. Of course, the push rod 702 can be slidably mounted on the mounting seat 6 by using other sliding structures.

In order to prevent the driving teeth on the push rod 702 from disengaging from the upper engaging teeth of the follower 701 during the sliding process of the push rod 702, so as to cause discontinuous transmission, the door opening and closing device provided by the present invention further comprises a stopping structure, referring to fig. 8 and 9, the driving teeth of the push rod 702 located at both ends of the push rod 702 are a first end driving tooth 7021 and a second end driving tooth 7022, the first end driving tooth 7021 is close to the box body, and the second end driving tooth 7022 is far from the box body. Referring to fig. 9, the blocking structure is used to engage the second end gear 7022 with the driven wheel 701 when the push rod 702 is slid to the extended position, and referring to fig. 8, the blocking structure is used to engage the first end gear 7021 with the driven wheel 701 when the push rod 702 is slid to the retracted position.

Referring to fig. 8, when the driven wheel 701 rotates clockwise to drive the push rod 702 to slide to the retracted position, if the first end driving gear 7021 is not engaged with the driven wheel 701, when the driven wheel 701 rotates counterclockwise again and it is necessary to drive the push rod 702 to slide to the extended position, since the driving gear on the push rod 702 is already disengaged from the driven wheel 701, it is difficult to drive the push rod 702 to slide to the extended position again. Referring to fig. 9, when the driven wheel 701 rotates counterclockwise to drive the push rod 702 to slide to the extended position, if the second end driving gear 7022 is not engaged with the driven wheel 701, when the driven wheel 701 rotates clockwise again and the push rod 702 needs to be driven to slide toward the retracted position, since the driving gear on the push rod 702 is already disengaged from the driven wheel 701, it is difficult to drive the push rod 702 to slide toward the retracted position again. The push rod 702 can be guaranteed to be meshed with the driven wheel 701 in real time through the stopping structure, and therefore meshing transmission continuity of the driven wheel 701 and the push rod 702 is guaranteed.

In some embodiments, referring to fig. 8 and 9, the preventing structure includes: one end of the elastic member 703 is connected with the mounting seat 6, the other end of the elastic member 703 is connected with one end of the push rod 702 far away from the box body, and the connection position of the elastic member 703 and the mounting seat 6 is between a contraction position and an extension position. The specific working principle of the stopping structure is as follows: referring to fig. 8, when the push rod 701 slides to the retracted position, the elastic member 703 may apply a pulling force F1 to the push rod 702, so that the push rod 702 has a tendency to move toward the extended position, and the first end driving gear 7021 is engaged with the driven wheel 701; referring to fig. 9, when the push rod 701 slides to the extended position, the elastic member 703 may apply a pulling force F2 to the push rod 702, so that the push rod 702 has a tendency to move toward the retracted position, and the second end driving gear 7022 is engaged with the driven wheel 701.

The elastic member 703 may have various implementations, such as a spring, a spring plate, etc., and the specific structure of the elastic member 703 is not limited herein, and any structure is within the scope of the present invention.

Generally, when the door body 2 is pushed by the push rod 702 to a position where α is 10 to 12 °, α is a rotation angle of the door body 2, and the push rod 702 stops moving, in specific implementation, the number of teeth of the transmission teeth on the push rod 702 can be determined according to the rotation angle of the door body 2 under the action of the push rod 702, and the number of teeth of the transmission teeth on the push rod 702 is not limited, and any number of teeth is within the protection scope of the present invention.

Referring to fig. 6, the refrigerator provided by the invention further comprises a rotating mechanism 8, the driving mechanism 5 is further used for driving the rotating mechanism 8 to move so as to drive the door body to rotate around the hinge shaft, and the rotating mechanism 8 and the ejection mechanism 7 are both arranged close to the hinge shaft.

Referring to fig. 6 and 10, the rotation mechanism 8 includes: the door body 1 comprises a worm 801, a worm wheel 802, a first transmission wheel 803 and a second transmission wheel 805, wherein the worm 801 is in transmission connection with a driving wheel 502, the rotation axis of the worm 801 is parallel to the rotation axis of the driving wheel 501, the worm wheel 802 is meshed with the worm 801, and the rotation axis of the worm wheel 802 is parallel to the height direction L3 (refer to FIG. 4) of the door body 1; the first transmission wheel 803 is connected with the turbine 802 through a connecting shaft 804 and can synchronously rotate with the turbine 802, and a second transmission wheel 805 is meshed with the first transmission wheel 803; the hinge shaft 4 has engaging teeth 401 provided along its circumferential direction and engaged with the second driving wheel 805 (alternatively, a driving wheel engaged with the second driving wheel 805 may be fixed to the hinge shaft). When the driving wheel 502 drives the worm 801 to rotate, the worm wheel 802 is driven to rotate, the rotating worm wheel 802 drives the first driving wheel 803 to rotate synchronously through the connecting shaft 804, the first driving wheel 803 drives the second driving wheel 805 to rotate in the opposite direction, the rotating second driving wheel 805 transmits the acting force to the meshing teeth 401, but since the meshing teeth 401 are formed on the hinge shaft 4, the meshing teeth 401 apply a reaction force to the second driving wheel 805 to drive the door body 2 to rotate around the hinge shaft 4.

In specific implementation, in general, the engaging teeth 401 are made of metal, the second transmission teeth 805 are made of polymer material, and in order to prevent the reaction force applied by the engaging teeth 401 to the second transmission wheels 805 from damaging the second transmission wheels 805 and further affecting the performance of the entire door opening and closing device, referring to fig. 10, the rotating mechanism 8 further includes a third transmission wheel 806, the third transmission wheel 806 is made of metal, the third transmission wheel 806 is connected to the second transmission wheels 805 through a connecting shaft, and the third transmission wheel 806 is engaged with the engaging teeth 401.

If the driving wheel 502 is directly in transmission connection with the worm 801, when the door body 2 is opened, the driving wheel 502 drives the driven wheel 701 to rotate, and then drives the push rod 702 to move, so that in the process of destroying the larger door seal suction force between the door body and the box body, the driving wheel 502 can also generate larger torque for the worm 801, and then can generate larger torque for the meshing teeth 401, so that the meshing teeth 401 are damaged, the service life of the meshing teeth 401 is influenced, and further the service life of the whole door opening and closing device is shortened.

In order to prolong the service life of the meshing teeth 401, the door opening and closing device provided by the embodiment of the invention further comprises a time delay mechanism, and the time delay mechanism is used for delaying the rotation of the worm 801 driven by the driving wheel 501 from the movement of the ejection mechanism driven by the driving wheel 501. That is to say, in the process that the driving wheel 502 drives the ejection mechanism to move so as to destroy the door seal suction force to eject the door body 2, the driving wheel 502 cannot generate a large torque to the worm 801 through the delay mechanism, and further cannot generate a large torque to the meshing teeth 401, when the ejection mechanism ejects the door body 2 to a certain angle, the driving wheel 502 can drive the worm 801 to rotate so as to drive the door body to continue to rotate around the hinge shaft, so that the meshing teeth 401 can be protected.

Referring to fig. 10, the time delay mechanism includes a clutch 9 installed between a driving wheel 502 and a worm 801, in case that the clutch 9 is powered off, the clutch 9 prevents the driving wheel 502 from driving the worm 801 to rotate, in case that the clutch 9 is powered on, the driving wheel 502 drives the worm 801 to rotate through the clutch 9, and the clutch 9 is used as the time delay mechanism, so that the operation is stable, and the operation stability of the whole door opening and closing device can be improved.

In order to improve the appearance beauty of the whole door opening and closing device, referring to fig. 5 and 6, the door opening and closing device further comprises an installation box 11, wherein the installation box 11 comprises a bottom plate 111 and a cover body 112 which are buckled with each other, and the rotating mechanisms 8 are all installed in an installation cavity formed by buckling the bottom plate 111 and the cover body 112. The bottom plate 111 and the cover 112 are detachably connected, which also facilitates subsequent maintenance of the rotating mechanism 8.

In order to effectively control the opening and closing of the door, referring to fig. 21 and 22, the refrigerator further includes a cam transmission mechanism 12 and a micro switch 13, wherein the cam transmission mechanism 12 includes: the cam 121, the follower 122 and the guide structure 123 mounted on the connecting shaft 804, referring to fig. 23 to 25, a cam surface 1211 and a base circular surface 1212 are formed at the outer edge of the cam 121; the follower 122 is movably arranged on the bottom plate 111 and is positioned between the cam 121 and the microswitch 13; the guide structure 123 serves to guide the follower 122 to move between the cam 121 and the microswitch 13.

When the door body is opened, the connecting shaft 804 drives the cam 121 to rotate around the first rotating direction, and when the base circular surface 1212 is opposite to the driven member 122, the driven member 122 is static and does not press down the contact of the micro switch 13, and the micro switch 123 outputs a signal that the door body is opened; when the cam surface 1211 is engaged with the follower 123, the follower 122 is driven to move toward the microswitch 13, and the contact of the microswitch 13 is pressed, so that the microswitch 13 outputs a signal that the door body is in a fully opened state. The technical effects achieved in this way are: when the door body is in the fully opened state, the microswitch 13 outputs a signal that the door body is in the fully opened state, and the driving motor can be controlled to stop rotating through the controller, so that the phenomenon that the door body is damaged by continuous rotation of the door body is prevented.

When the door body is closed, the connecting shaft 804 drives the cam 121 to rotate around the second rotating direction, and when the base circular surface 1212 is opposite to the driven member 122, the driven member 122 is static and does not press down the contact of the micro switch 13, the micro switch 13 outputs a signal that the door body is in a closing process, and when the cam surface 1211 is matched with the driven member 122, the driven member 122 is driven to move towards the micro switch 13, and the contact of the micro switch 13 is pressed down, and the micro switch 13 outputs a signal that the door body is in a completely closed state; wherein the first rotational direction is opposite the second rotational direction. The technical effects achieved in this way are: when the door body is in the completely closed state, the microswitch 13 outputs a signal that the door body is in the completely closed state, and the driving motor can be controlled to stop rotating by the controller, so that the phenomenon that the door body is damaged by continuous rotation is prevented.

In some embodiments, referring to fig. 23, the follower 122 has a mounting groove 1221, the cam 121 is rotatably mounted in the mounting groove 1221, a convex hull 1222 is formed on a wall surface of the mounting groove 1221, the follower 122 is driven to move toward the microswitch 13 when the cam surface 1211 is engaged with the convex hull 1222, and the follower 122 is stationary when the base circular surface 1212 is engaged with the convex hull 1222. The follower 122 is sleeved on the cam 121, so that the working stability of the cam and the follower can be guaranteed.

In some embodiments, referring to fig. 22, the guiding structure 123 includes a guiding groove 1232 and a guiding post 1231 engaged with the guiding groove 1232, the extending direction of the guiding groove 1232 is parallel to the moving direction of the follower 122, one of the guiding groove 1232 and the guiding post 1231 is disposed on the follower 122, and the other is disposed on the base plate 111; for example, referring to fig. 22, the guide post 1231 is provided on the base plate 111, and the guide groove 1232 is opened on the follower 122. The guide structure formed by the guide groove 1232 and the guide post 1231 is simple in structure and convenient to implement.

In order to provide assistance for closing the refrigerator door, the refrigerator provided by the embodiment of the invention further comprises an absorption assisting mechanism which is matched with the door seal and acts together to enable the door body 2 to be closed more tightly, and the preservation performance of the refrigerator is improved.

Referring to fig. 11 to 15, the suction assist mechanism 10 includes: the suction aid is arranged on the box body and comprises a fixed shell 102, a channel 1022 and an insertion opening 1021 communicated with the channel 1022 are formed in the fixed shell 102, referring to fig. 14 and 15, a push block 104 is arranged in the channel 1022, a guide block 103 is arranged between the push block 104 and the side wall of the channel 1022, the guide block 103 is connected with an elastic tensioning piece 105, the elastic tensioning piece 105 is used for tensioning the guide block 103, the direction of the tensioning force is along the direction far away from the insertion opening, a limiting structure is formed at the position where the guide block 103 is matched with the channel 1022, the limiting structure is used for preventing the guide block 103 from moving under the action of the tensioning force, a pulling part is formed on the push block 104, one end of the pull rod 101 is connected with the door body 2, the other end of the pull rod 101 faces the box body 1, and a locking part is formed on the pull rod 101 and.

Referring to fig. 16 to 18, in the process of closing the door body, the pull rod 101 rotating synchronously with the door body may push the push block 104 to move along the channel 1022 toward the direction away from the insertion port 1021 through the insertion port 1021, and the push block 104 may drive the guide block 103 to approach the push block 104 through the pulling portion, so that the guide block 103 moves from the limiting state to the unlocking state, and is connected with the pull rod 101 through the locking portion to prevent the pull rod 101 from coming off the insertion port 1021.

Referring to fig. 19 to 20, in the process of opening the door body, the push block 104, the guide block 103 and the pull rod 101 rotating synchronously with the door body move along the channel 1022 toward the direction close to the insertion port 1021, the push block 104 can drive the guide block 103 to move away from the push block 104 through the pulling part, so that the guide block 103 in the unlocked state moves to the limit state, and the guide block 103 is separated from the pull rod 101, so that the pull rod 101 is separated from the insertion port 1021.

That is, when the door 2 is closed, the door 2 drives the pull rod 101 to move toward the box 1, referring to fig. 16 to 18, the moving pull rod 101 passes through the insertion opening 1021 to abut against the push block 104, and as the door 2 is continuously closed, the pull rod 101 pushes the push block 104 to move along the direction P1 in the channel 1022, when the pull rod 101 and the push block 104 initially move, because the guide block 103 is in a limit state through the limit structure, as the pull rod 101 and the push block 104 continue to move, the push block 104 drives the guide block 103 to move toward the push block 104 through the pulling part, so that the guide block 103 moves from the limit state to an unlock state, the guide block 103 also moves along the direction P1 along with the push block 104 and the pull rod 101 in synchronization, and the guide block 104 is connected with the pull rod 101 through the locking part to prevent the pull rod 101 from coming out of the insertion opening 1021.

At the initial stage that the door body 2 drives the pull rod 101 to rotate so as to push the push block 104 to move, the rotation torque of the door body 2 is still larger, and the pull rod 101 and the push block 104 can stably move along the direction P1, when the door body 2 is closer to the fully closed state, the rotational torque of the door body 2 becomes smaller, however, because the push block 104 and the pull rod 101 which move synchronously drive the guide block 103 to move to the unlocking state through the traction part, the guide block 103 is connected with the pull rod 101 through the locking part, and because the guide block 103 is connected with the elastic tension piece 105, the elastic tension member 105 thus exerts a pulling force in the direction P1 on the push block 104 and the guide block 103, together with the pull rod 101 connected to the door body 2, therefore, even if the rotating torque of the door body 2 is smaller, the door body 2 can be tightly closed under the combined action of the elastic tension piece 105 and the locking part, and the phenomenon of rebound can not occur.

When the door body 2 is opened, the door body 2 drives the pull rod 101 to move in a direction away from the box body 1, referring to fig. 18 and 20, the pull rod 101, the push block 104 and the guide block 103 are driven by the door body 2 to move synchronously in a direction P2, the push block 104 drives the guide block 103 to move away from the push block 104 through the pulling part, so that the guide block 103 is separated from the pull rod 101, the pull rod 101 is separated from the insertion opening, the guide block 103 in the unlocking state also moves to the limiting state, and the guide block 103 in the unlocking state moves in a direction away from the insertion opening through the limiting structure. During the movement of the pull rod 101 along the direction P2, the movement is smooth and continuous, and the door body 2 is smoothly opened.

In some embodiments, the guide block 103 comprises two oppositely disposed guide plates, the elastic tension member 105 is connected to one of the two guide plates, the two guide plates are oppositely disposed, and the push block 104 is disposed between the two guide plates. Referring to fig. 15 and 17, the two guide plates are a first guide plate 1031 and a second guide plate 1032, the first guide plate 1031 and the second guide plate 1032 are oppositely arranged, the push block 103 is disposed between the first guide plate 1031 and the second guide plate 1032, and the elastic tension member 105 is connected to the second guide plate 1032, but the elastic tension member 105 may also be connected to the first guide plate 1031.

Referring to fig. 16, the elastic tension member 105 is a tension spring, one end of which is connected to one of the two guide plates and the other end of which is connected to a side of the stationary case away from the insertion opening; of course, the elastic tension member 105 may have other configurations.

Referring to fig. 16, the pushing block 104 includes an abutting plate 1041 for abutting against an end of the pull rod 101, and the pulling part includes two pressing plates (a first pressing plate 1042 and a second pressing plate 1043) disposed on a side of the abutting plate 1041 away from the insertion opening, and both the pressing plates are inclined plates and inclined toward a side wall of the corresponding channel.

Referring to fig. 17, the guide plate includes a guide plate body located between the pressure plate and the side wall of the channel, one end of the guide plate body, which is far away from the insertion opening, is provided with a bearing plate, the bearing plate is bent towards the insertion opening, an insertion cavity is formed between the bearing plate and the guide plate body, and when the push block moves towards the direction far away from the insertion opening, the pressure plate can stretch into the insertion cavity to apply pressure to the bearing plate to drive the guide plate to move towards the push block. That is, the first guide plate 1031 includes a first guide plate body 10311 located between the first pressing plate 1042 and the side wall of the passage, an end of the first guide plate body 10311 away from the insertion opening has a first pressure receiving plate 10312, the first pressure receiving plate 10312 is bent toward the insertion opening, and a first insertion cavity is formed between the first pressure receiving plate 10312 and the first guide plate body 10311; the second guide plate 1032 includes a second guide plate body 10321 located between the second pressing plate 1043 and the sidewall of the channel, one end of the second guide plate body 10321 away from the insertion opening has a second bearing plate 10322, the second bearing plate 10322 is bent toward the insertion opening, and a second insertion cavity is formed between the second bearing plate 10322 and the second guide plate body 10321.

Through the effect of the first pressure plate 1042 on the first pressure bearing plate 10312 and the effect of the second pressure plate 1043 on the second pressure bearing plate 10322, the first guide plate 1031 and the second guide plate 1032 are pulled and move towards the push block 104, so that unlocking is realized, the structure of the pulling part is simple, and in the pulling process, resilience force cannot be applied to the push block 104 and the pull rod 101 which move synchronously, and the phenomenon of rebounding of the door body in the closing process is avoided.

In other embodiments, a spring is arranged between the pushing block 104 and the guiding block 103, one end of the spring is connected with the pushing block 104, the other end of the spring is connected with the guiding block 103, and when the pushing block 104 moves in the direction away from the insertion opening, the guiding block 103 can be driven by the spring to approach the pushing block, so that the guiding block 103 moves from the limited state to the unlocked state. However, when a spring is used as the pulling portion, there is a possibility that a repulsive force acts on the push block 104 and the pull rod 101, and therefore, the present invention is preferable to the structure of the pulling portion shown in fig. 17.

Referring to fig. 16, the locking portion includes a protrusion disposed at an end of the pull rod 101, and a locking groove engaged with the protrusion is disposed at a side of the guide plate body close to the push block. That is, the first guide plate body 10311 is provided with a first locking groove 10313, the second guide plate body 10321 is provided with a second locking groove 10323, and the end of the pull rod 101 is formed with a first protrusion 1011 engaged with the first locking groove 10313 and a second protrusion 1012 engaged with the second locking groove 10323. The locking part has a simple structure and a simple manufacturing process. In addition, other configurations of the latching portion are within the scope of the present invention.

Referring to fig. 18, the limiting structure includes a limiting block disposed on the guide plate body and close to the insertion opening, and a limiting groove matched with the limiting block is formed at a position of the channel located at the insertion opening. That is, a first stopper 10314 is formed on the first guide plate body 10311, a second stopper 10324 is formed on the second guide plate body 10321, and a first stopper 1023 engaged with the first stopper 10314 and a second stopper 1024 engaged with the second stopper 10324 are formed at a position of the passage 1022 close to the insertion port 1021. The limiting groove and the limiting block are matched to realize limiting effect, the structure is simple, the limiting structure is arranged at the insertion hole 1021, and the assembly and disassembly are convenient.

In some embodiments, referring to fig. 16, an elastic compression member 106 is installed between the two pressing plates, and when the pushing block 104, the guiding block 103 and the pull rod 101 rotating synchronously with the door body move along the channel in a direction approaching the insertion port 1021, the elastic compression member is used for applying an elastic force to the pushing block 104 in the direction approaching the insertion port 1021. When the door body is opened, the rotating door body needs to drive the pull rod 101, the push block 104 and the guide block 103 to move, meanwhile, the tension force of the elastic tension piece 105 needs to be overcome, the push block 104 is pushed by the elastic compression piece 106, the rotating torque of the door body can be improved, and the opening speed of the door body is further improved.

In various specific implementations of the elastic compression element 106, for example, referring to fig. 16, the elastic compression element 106 includes a compression spring, the compression spring is sleeved on a support pillar 1044 located between two compression plates, an extending direction of the support pillar 1044 is parallel to an inserting direction of the pull rod 101, and one end of the support pillar 1044 is fixed on the abutting plate 1041.

In order to make ejector pad 104, pull rod 101 and guide block 103 along the in-process of passageway motion, it is steady, do not deviate, refer to fig. 15, the deflector still includes the limiting plate of being connected with the one end of keeping away from the inserted hole of deflector body, the limiting plate extends towards the direction of keeping away from the inner wall of stationary housing, be provided with the perforation on the limiting plate, drive the condition that the guide block is close to the ejector pad at the ejector pad, the perforation on two limiting plates of laying relatively can be laid relatively, the relative perforation can be passed through to the support column, guide block 103 like this, ejector pad 104 and pull rod 101 link together along passageway synchronous motion, can effectively avoid taking place the skew phenomenon that influences door body pivoted. That is, the first guide plate 1031 further includes a first limiting plate 10314 connected to an end of the first guide plate body 10311 away from the insertion opening, a first through hole 10315 is provided on the first limiting plate 10314, the second guide plate 1032 further includes a second limiting plate 10324 connected to an end of the second guide plate body 10321 away from the insertion opening, and a second through hole 10325 is provided on the second limiting plate 10324.

The pull rod 101 provided by the embodiment of the invention can be connected with the connecting shaft 804, so that the connecting shaft does not need to be arranged independently, and the pull rod 101 can also be arranged on the door body through other connecting shafts.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The utility model provides a refrigerator, includes that inside is formed with the box of storeroom and sets up the door body at the opening part of storeroom, install the articulated slab on the box, the articulated slab pass through the articulated shaft with door body rotation is connected, its characterized in that still includes the door opening and closing device, the top of door body is formed with and surpasss the extension at the top of box, be formed with the installation cavity in the extension, the door opening and closing device sets up in the installation cavity, the door opening and closing device includes:

a drive mechanism;

the driving mechanism is used for driving the ejection mechanism to move so as to eject the door body.

2. The refrigerator according to claim 1, wherein the driving mechanism comprises:

the output shaft of the driving motor is parallel to the width direction of the door body;

and the driving wheels are respectively in transmission connection with the ejection mechanisms and are arranged on the output shaft of the driving motor.

3. The refrigerator according to claim 2, wherein the ejection mechanism comprises:

the driven wheel is meshed with the driving wheel;

the push rod is arranged on the mounting seat and can slide between a contraction position and an extension position, the sliding direction of the push rod is parallel to the thickness direction of the door body, and the push rod is provided with transmission teeth which are arranged along the extension direction of the push rod and are meshed with the driven wheel.

4. The refrigerator according to claim 3, further comprising a stopping structure, wherein the driving teeth at both ends of the push rod are a first end driving tooth and a second end driving tooth, the first end driving tooth is close to the cabinet, and the second end driving tooth is far away from the cabinet;

the preventing structure is used for enabling the second end transmission gear to be meshed with the driven wheel under the condition that the push rod slides to the stretching position;

the preventing structure is used for enabling the first end transmission gear to be meshed with the driven wheel under the condition that the push rod slides to the contraction position.

5. The refrigerator according to claim 4, wherein the preventing structure comprises an elastic member having one end connected to the mount and the other end connected to an end of the push rod away from the cabinet, the elastic member being between the contracted position and the extended position at the connection position of the mount.

6. The refrigerator as claimed in claim 2, wherein the door opening and closing device further comprises a rotating mechanism, the driving mechanism is further configured to drive the rotating mechanism to move so as to drive the door to rotate around the hinge shaft, and the rotating mechanism and the ejecting mechanism are both disposed near the hinge shaft.

7. The refrigerator according to claim 6, wherein the rotation mechanism comprises:

the worm is in transmission connection with the driving wheel, and the rotation axis of the worm is parallel to that of the driving wheel;

the worm wheel is meshed with the worm, and the rotation axis of the worm wheel is parallel to the height direction of the door body;

the first driving wheel is connected with the turbine through a connecting shaft and can synchronously rotate with the turbine;

the articulated shaft is provided with meshing teeth which are arranged along the circumferential direction of the articulated shaft and meshed with the second driving wheel.

8. The refrigerator as claimed in claim 7, wherein a clutch is installed between the capstan and the worm, the clutch prevents the capstan from rotating the worm in case of power-off of the clutch, and the capstan rotates the worm through the clutch in case of power-on of the clutch.

9. The refrigerator according to claim 6, further comprising a cam gear and a micro switch, the cam gear comprising: the cam is arranged on the connecting shaft, and a cam surface and a base circle surface are formed on the outer edge of the cam; the driven piece is movably arranged on the bottom plate and is positioned between the cam and the microswitch; a guide structure for guiding the follower to move between the cam and the microswitch;

when the door body is opened, the connecting shaft drives the cam to rotate around a first rotating direction, the base circular surface is opposite to the driven piece, the driven piece is static and does not press down a contact of the micro switch, and the micro switch outputs a signal of the door body in the opening process; when the cam surface is matched with the driven piece, the driven piece is driven to move towards the micro switch, and the contact of the micro switch is pressed down, the micro switch outputs a signal that the door body is in a fully opened state,

when the door body is closed, the connecting shaft drives the cam to rotate around a second rotating direction, the base circular surface faces the driven part, the driven part is static and does not press down a contact of the microswitch, the microswitch outputs a signal that the door body is in a closing process, when the cam surface is matched with the driven part, the driven part is driven to move towards the microswitch and presses down the contact of the microswitch, and the microswitch outputs a signal that the door body is in a completely closed state; wherein the first rotational direction is opposite the second rotational direction.

10. The refrigerator as claimed in claim 9, wherein the follower is formed with a mounting groove, the cam is rotatably mounted in the mounting groove, a convex hull is formed on a wall surface of the mounting groove, the follower is driven to move toward the micro switch when the cam surface is engaged with the convex hull, and the follower is stationary when the base circular surface is engaged with the convex hull.

11. The refrigerator of claim 9, wherein the guide structure includes a guide groove and a guide post engaged with the guide groove, the guide groove extends in a direction parallel to a moving direction of the follower, and one of the guide groove and the guide post is disposed on the follower and the other is disposed on the bottom plate.

12. The refrigerator as claimed in claim 2, wherein a transmission is mounted on an output shaft of the driving motor, the transmission is used for expanding the torque of the output shaft of the driving motor, and an output end of the transmission is rotatably connected with the driving wheel.

13. The refrigerator of claim 1, further comprising a suction-assist mechanism, the suction-assist mechanism comprising:

the suction aid is arranged on the box body and comprises a fixed shell, a channel and an insertion hole communicated with the channel are formed in the fixed shell, a push block is arranged in the channel, a guide block is arranged between the push block and the side wall of the channel and connected with an elastic tensioning piece, the elastic tensioning piece is used for applying tension to the guide block, the direction of the tension is along the direction far away from the insertion hole, a limiting structure is formed at the position where the guide block is matched with the channel and used for preventing the guide block from moving under the action of the tension, and a traction part is formed on the push block;

the pull rod and/or the guide block are/is provided with a locking part;

in the process of closing the door body, the pull rod which synchronously rotates with the door body can penetrate through the insertion opening to push the push block to move along the channel in the direction far away from the insertion opening, the push block can drive the guide block to be close to the push block through the traction part, so that the guide block moves from a limiting state to an unlocking state, and the pull rod is connected with the pull rod through the locking part to prevent the pull rod from falling out of the insertion opening;

in the process that the door body is opened, the push block, the guide block and the pull rod synchronously rotating with the door body move along the channel towards the direction close to the insertion opening, the push block can drive the guide block to be far away from the push block through the traction part, so that the guide block in the unlocking state moves to the limiting state, and the guide block is separated from the pull rod, so that the pull rod is separated from the insertion opening.

14. The refrigerator as claimed in claim 13, wherein the guide block includes two guide plates disposed oppositely, the elastic tension member is connected to one of the two guide plates disposed oppositely, and the push block is disposed between the two guide plates;

the pushing block comprises a butt plate used for abutting against the end part of the pull rod, the traction part comprises two pressing plates arranged on one side of the butt plate far away from the insertion opening, and the two pressing plates are inclined plates and inclined towards the side wall direction of the corresponding channel;

the deflector is including being located the pressure strip with deflector body between the lateral wall of passageway, keeping away from of deflector body the one end of inserted hole has the bearing plate, the bearing plate court the inserted hole direction is bent, the bearing plate with form between the deflector body and insert the chamber the ejector pad is towards keeping away from during the direction motion of inserted hole, the pressure strip can stretch into it is right to insert the intracavity the bearing plate is exerted and is driven the deflector court the pressure of ejector pad direction motion.

15. The refrigerator as claimed in claim 14, wherein the locking part includes a protrusion provided at an end of the pull rod, and a locking groove matched with the protrusion is provided at a side of the guide plate body adjacent to the push block.

16. The refrigerator as claimed in claim 14, wherein the stopper structure includes a stopper disposed on the guide plate body and adjacent to the insertion opening, and a stopper groove is formed at a position of the channel at the insertion opening to be engaged with the stopper.

17. The refrigerator according to claim 14, wherein an elastic compression member is installed between the two pressing plates, and when the push block, the guide block and the pull rod rotating synchronously with the door body move along the channel in a direction approaching the insertion opening, the elastic compression member is used for applying an elastic force to the push block in a direction approaching the insertion opening.