An auxiliary door opening device for a refrigerator door frame assembly

Abstract

The application discloses an auxiliary door opening device of a refrigerator door frame assembly, which comprises a box body and a door body, a push rod, the push rod is slidably connected with the box body, the first end of the push rod is connected with the door body, at least one side of the push rod is provided with a sliding surface, the width from the first end to the second end of the push rod on the other side of the push rod is gradually reduced, a clamping driving part is arranged on the box body, the clamping driving part is provided with a pushing piece matched with the sliding surface, the pushing piece is arranged in a track cavity, an elastic piece is arranged between the bottom of the track cavity and the pushing piece, the pushing piece end is slidably matched with the sliding surface, the pushing piece end extrudes the sliding surface, the door body is subjected to a component force perpendicular to the door body, and the component force assists the door body in being opened. The door frame assembly makes the extrusion force output by the spring matched with the sliding surface, the component force of the extrusion force acting on the door body is utilized to assist the door body in being opened, the device does not need to be provided with a driving motor, has the advantages of energy saving and consumption reduction, and has the advantages of simple structure, low failure rate and maintenance-free.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to an auxiliary door opening device of a refrigerator door frame assembly. BACKGROUND

[0002] With the improvement of life, people have higher and higher requirements for existing ordinary refrigerators, so that high-end refrigerators in the market have developed rapidly. The door frame structure of the existing refrigerator door is usually simply hinged to the door body by a hinge. However, this structure must be actively pulled open by a person when opening the refrigerator door, and the refrigerator door needs to be kept open when repeatedly taking and placing objects in the refrigerator. However, such a refrigerator door is easily rotated and closed by the torque due to the influence of the levelness of the refrigerator placement, which causes the user to have to repeatedly pull open the refrigerator door.

[0003] Secondly, such a refrigerator door does not have an auxiliary door opening setting, and its intelligence is low. To achieve the auxiliary door opening function, some auxiliary door opening designs have appeared, for example, application No. CN201911014048.7 discloses an automatic door opening device and a refrigerator. The automatic door opening device is applied to a box body provided with a door body in rotation, and includes: a push rod, which is slidably arranged relative to the box body, a first end of the push rod being slidably extended or retracted from the box body and being detachably connected with the door body; a driving mechanism connected with the push rod, for driving the first end of the push rod to extend or retract from the box body, thereby driving the door body to rotate relative to the box body; and a control mechanism connected with the driving mechanism, for receiving a control instruction to control the driving mechanism to drive the first end of the push rod to extend or retract from the box body according to the control instruction. The application file sets a circular arc-shaped push rod, and a speed reduction gear set is arranged on the inner side of the push rod to drive the door body to open through meshing with the push rod. The defect of this structure is that: although the meshing of the gear realizes the opening of the door body, the refrigerator door is also in a state of being limited by the meshing of the gear at this time, that is, the opening degree of the door body cannot be controlled by a person, and if the opening degree is directly controlled by a person, the phenomenon of "gear tooth" will occur, and the meshing of the push rod and the gear will be worn out after a long time. In addition, this opening mechanism is limited by the push rod and can only open the door body by 90° at most, while the refrigerator door usually needs a larger opening angle in actual use.

[0004] In view of the above, it is necessary to provide an auxiliary door opening device of a refrigerator door frame assembly to solve the above problems. SUMMARY

[0005] The purpose of the present application is to solve the above technical problems and provide an auxiliary door opening device of a refrigerator door frame assembly.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary door opening device for a refrigerator door frame assembly, including a cabinet and a door, and a push rod, wherein the push rod is slidably connected to the cabinet, the first end of the push rod is connected to the door, and the push rod has a sliding surface on at least one side, wherein the width of the sliding surface from the other side of the push rod gradually narrows from the first end to the second end of the push rod.

[0007] The clamping drive unit is mounted on the housing and has a pusher that cooperates with the sliding surface. The pusher is placed inside the track cavity, and an elastic element is provided between the bottom of the track cavity and the pusher. The end of the pusher is slidably engaged with the sliding surface. The end of the pusher presses against the sliding surface, causing the door to be subjected to a component force perpendicular to the door. This component force assists the door in opening.

[0008] Furthermore, the push rod is arc-shaped, and the center of the push rod coincides with the hinge axis of the door. The sliding surface is provided with a limiting groove at one end near the door. When the door is closed, the end of the push member is placed in the limiting groove.

[0009] Furthermore, the clamping drive unit is connected to the outside of the housing, and the housing is fixedly installed at the top of the box near the corner of the door hinge axis. The housing has a guide slot for inserting a push rod on the side facing the door.

[0010] Furthermore, a support roller is rotatably connected inside the housing. The support roller is located inside the guide groove. The pusher and the support roller are located on opposite sides of the push rod. The outer wall of the support roller is tangent to the inner circle of the push rod.

[0011] Furthermore, the push rod is a straight rod, the first end of the push rod is hinged to the door body, and the sliding surfaces are respectively arranged on both sides of the push rod, with the distance between the sliding surfaces on both sides gradually decreasing from the first end to the second end of the push rod.

[0012] Furthermore, the clamping drive unit is disposed on the turntable, which is rotatably connected to the housing. There are two clamping drive units, which are symmetrically disposed on the turntable, and the two pushers are disposed opposite to each other.

[0013] Furthermore, the turntable is also provided with a roller channel, and the push rod is slidably connected and placed in the roller channel. The roller channel is perpendicular to the line connecting the two clamping drive parts. The roller channel is provided with an inner wall roller, which is slidably connected to the side wall of the push rod. The second end of the push rod is provided with a stop block, and the width of the stop block is greater than the width of the roller channel.

[0014] Furthermore, the sliding surfaces on both sides of the push rod near the door body are symmetrically provided with limiting grooves, and the sliding surfaces on both sides of the middle part of the push rod are provided with segment grooves.

[0015] Furthermore, the end of the pusher is rotatably connected to a contact roller, and the elastic element is a spring.

[0016] Further, the track cavity is further provided with an elastic adjusting part, the elastic adjusting part comprises a push plate and a bolt, the push plate is arranged between the spring and the track cavity, the bolt is in threaded connection with the bottom surface of the track cavity, and the end of the bolt is in rotary connection with the push plate.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] 1. The door frame assembly can cooperate with the sliding surface by the extrusion force of the spring, and the component force of the extrusion force on the door body can assist in opening the door body, the device does not need to be provided with a driving motor, has the advantages of energy saving and consumption reduction, and has simple structure, low failure rate and maintenance-free.

[0019] 2. Since the sliding surface and the pusher are in relative sliding contact, the user can intervene in opening or closing the door body at any time when the door body is at each opening degree, and the auxiliary door opening device will not be damaged.

[0020] 3. The limiting groove arranged at the first end of the push rod can keep the closed state of the door body when the door body is closed, can assist in fixing the door body when the door body is closed, and once the starting displacement of the door body is opened, the pusher can automatically open the door body after passing through the limiting groove.

[0021] 4. The segment groove arranged in the middle of the straight rod-shaped push rod can realize the segment feeling of the opening of the door body, that is, the push rod can limit the door body when the push rod moves to the segment groove position, so as to facilitate the control of the angle of the automatically opened door body. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is one of the axial drawings of the auxiliary door opening device of the refrigerator door frame assembly of the present application;

[0023] Figure 2 It is a structural schematic view of the first embodiment of the present application;

[0024] Figure 3 It is a structural schematic view of the second embodiment of the present application;

[0025] Figure 4 It is a door body closed state diagram in the third embodiment of the present application;

[0026] Figure 5 It is a door body opened state diagram in the third embodiment of the present application;

[0027] In the figure: 1, box body; 2, door body; 3, push rod; 4, sliding surface; 5, clamping driving part; 6, push piece; 7, elastic piece; 8, limiting groove; 9, shell; 10, guide groove; 11, supporting roller; 12, rotating disc; 13, roller channel; 14, inner wall roller; 15, stop block; 16, paragraph groove; 17, contact roller; 18, door opener; 19, push plate; 20, bolt. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0029] Embodiment one:

[0030] A kind of auxiliary door opening device of refrigerator door frame assembly, including box body 1 and door body 2, door body 2 is hinged in the side of box body 1, it is close to the corner where door body 2 is hinged to install auxiliary door opening device, as Figure 1 Shown, it can be installed in the top of box body 1 close to hinged shaft, the auxiliary door opening device inside is equipped with push rod 3, door body 2 is pushed open by push rod 3, in actual use, since the door body 2 of refrigerator and box body 1 are attracted by magnetic force, the initial force that door body 2 is pushed open can be provided by the door opener 18 set on door body 2, and there are many in the prior art of the door opener 18 on refrigerator, which will not be repeated here, can adopt for example the refrigerator door opener 18 disclosed in application No.CN201810836691.7, the door opener 18 is arranged on box body 1, and the door opener 18 acts as pushing door body 2 to open a smaller angle, since door body 2 and box body 1 are pushed open a certain distance, so that the magnetic force of attraction disappears basically, at this time, the door body 2 can be automatically opened under the action of the auxiliary door opening device of the present device.

[0031] Specifically as Figure 1 , Figure 2As shown, the push rod 3 is slidably connected to the housing 1, and the first end of the push rod 3 is connected to the door 2. The push rod 3 has a sliding surface 4 on its side and a clamping drive part 5 that interacts with the push rod 3. The clamping drive part 5 is disposed on the housing 1 and has a pushing member 6 that cooperates with the sliding surface 4. Since the clamping drive part 5 is disposed on the housing 1, the driving force of the clamping drive part 5 acting on the sliding surface 4 can drive the door 2 to open actively. Specifically, the pushing member 6 is placed in the track cavity. It can move axially within the track cavity. An elastic element 7 is provided between the bottom of the track cavity and the pusher 6. The elastic element 7 pushes one end of the pusher 6 out of the track cavity. The elastic element 7 can be a spring. The point of force application is in contact with the sliding surface 4, that is, there is a sliding fit between the end of the pusher 6 and the sliding surface 4. A contact roller 17 is rotatably connected to the end of the pusher 6. The contact roller 17 changes the sliding friction between the pusher 6 and the sliding surface 4 to rolling friction, thereby reducing the overall resistance and making the opening of the door 2 smoother.

[0032] Furthermore, in order to enable the push rod 3 to open the door 2 under the pressure of the push member 6, the structure of the sliding surface 4 on the push rod 3 needs to be further designed. The distance between the sliding surface 4 and the other side is used as a variable. As shown in the figure, the distance is larger near the first end of the push rod 3 and gradually decreases as it moves towards the second end of the push rod 3. With this design, when the push member 6 presses on the sliding surface 4, the pressure can be divided into a force along the direction of the push member 6 and a component force perpendicular to the door 2. When the door 2 is subjected to the vertical component force, the door 2 can be automatically opened by this component force.

[0033] Understandably, the force required to open the refrigerator door 2 and cabinet 1 is usually small, and the resistance during the opening process of door 2 is not significant. Therefore, door 2 can be easily pushed open using the aforementioned component force, and this force can be adjusted by changing the elastic coefficient of the elastic element 7, such as... Figure 3 As shown, a push plate 19 can be installed at the bottom of the track cavity, and a bolt 20 is installed at the other end of the push plate 19. The bolt 20 is screwed to the track cavity. When the bolt 20 is rotated, the push plate 19 can be pushed against the push member 6, thereby squeezing the elastic member 7 and changing the pressure applied by the push member 6 to the sliding surface 4. As the pressure increases, the opening force that the door body 2 can receive also increases. When adjusted in the opposite direction, the opening force can be reduced.

[0034] Example 2:

[0035] In this embodiment, the push rod 3 is arc-shaped, and its center coincides with the hinge axis of the door body 2. The clamping drive part 5 is connected to the outside of the housing 9. The housing 9 is fixedly installed on the top of the box body 1 near a corner of the hinge axis of the door body 2. The housing 9 has a guide slot 10 for the push rod 3 to be inserted on the side facing the door body 2.Figure 3 As shown, since the push rod 3 is in the shape of a circular arc, the push rod 3 can be machined into 1 / 4 of a circular arc, and since the center of the push rod 3 coincides with the axis of the hinge shaft, the push rod 3 moves along the track of the circle formed by the axis of the hinge shaft when the door body 2 is opened, and when the door body 2 is fully opened, the second end of the push rod 3 can be pulled out of the guide slot 10, and since no limiting structure is arranged at the end of the push rod 3, the door body 2 can be opened to the maximum angle, the opening and closing of the door body 2 is relatively free, and the device does not have a gear meshing structure, but uses a sliding fit, so no matter how the door body 2 is opened and closed, it will not cause the gear teeth damage as in the background art cited patent.

[0036] Further, in the present embodiment, it can be known that only the outer side of the push rod 3 will be subjected to extrusion force, and the inner side lacks support, which easily causes the push rod 3 to be easily extruded and twisted, so a support roller 11 is rotatably connected in the housing 9, the support roller 11 is arranged inside the guide slot 10, the pusher 6 and the support roller 11 are respectively located on both sides of the push rod 3, and the outer wall of the support roller 11 is tangentially arranged with the inner circle of the push rod 3; when the push rod 3 moves in the housing 9, the inner side thereof is always in rolling contact with the support roller 11, thereby well offsetting the deflection torque caused by the pusher 6 on the outer side, so that the push rod 3 is more stable in use.

[0037] A limiting groove 8 can also be arranged at the end of the sliding surface 4 close to the door body 2, and when the door body 2 is closed, the end of the pusher 6 is arranged in the limiting groove 8, as shown in Figure 2 When the door body 2 is closed, the end of the pusher 6 is clamped in the limiting groove 8 at this time, so the component force perpendicular to the direction of the door body 2 disappears, and the door will not be automatically opened under the action of the pusher 6, and the limiting groove 8 can assist in realizing the locking effect of the closed door body 2.

[0038] Embodiment three:

[0039] In the present embodiment, the push rod 3 is designed as a straight rod, and the principle of assisting in opening the door is similar to that of embodiment one, but in the present embodiment, a straight rod is used and the clamping driving part 5 is arranged on both sides of the push rod 3, so that the door body 2 can obtain a higher pushing torque, and the extrusion force of the pusher 6 can be well offset from both sides, and the support roller 11 in embodiment two is improved, which has no direct force on the opening of the door body 2, and when the two-sided force in the present embodiment is changed, not only the opening force is increased, but also the force is more balanced.

[0040] Specifically, as shown in Figure 4 , Figure 5As shown, the first end of the push rod 3 is hingedly connected to the door body 2, and the sliding surfaces 4 are respectively arranged on both sides of the push rod 3. Different from the foregoing embodiment, since two groups of clamping pushers 6 need to be arranged, two corresponding sliding surfaces 4 are arranged, and the distance between the two sliding surfaces 4 gradually decreases from the first end to the second end of the push rod 3, so that the two sliding surfaces 4 form an acute triangle. In the foregoing embodiment, the push rod 3 is fixedly arranged on the door body 2, and in this embodiment, the straight rod is changed to a rotating connection. In order to cooperate with the rotation of the push rod 3, the clamping driving parts 5 on both sides need to be correspondingly rotated on the box body 1, so the clamping driving parts 5 on both sides are arranged on the rotating disc 12, and the rotating disc 12 is rotatably connected to the box body 1. The clamping driving parts 5 on both sides are symmetrically arranged on the rotating disc 12, so that the two pushers 6 are oppositely arranged. The oppositely arranged pushers 6 can extrude the sliding surfaces 4 on both sides towards the middle, and cooperate with the inclined arrangement of the sliding surfaces 4 to realize the vertical component force on the door body 2 as described in the first embodiment, so as to push the door body 2 open.

[0041] Since the rotating disc 12 needs to be rotated with the opening of the door body 2, so that the pushers 6 on both sides can vertically act on the push rod 3. The rotating disc 12 is provided with a roller groove 13, and the push rod 3 is slidably connected in the roller groove 13. The roller groove 13 is perpendicular to the connecting line direction of the clamping driving parts 5 on both sides, as shown in Figure 4 、 Figure 5 When the push rod 3 swings, the rotating angle of the rotating disc 12 can be immediately corrected through the roller grooves 13 on both sides, so that the clamping driving parts 5 are always perpendicular to the push rod 3, so that the pushers 6 have a vertical force on the push rod 3.

[0042] The inner wall roller 14 is arranged in the roller groove 13, and the inner wall roller 14 is rollingly connected with the side wall of the push rod 3. The sliding friction between the push rod 3 and the roller groove 13 is changed to rolling friction through the inner wall roller 14, so as to reduce the problem of jamming.

[0043] A stop block 15 can also be arranged at the second end of the push rod 3, and the width of the stop block 15 is greater than the width of the roller groove 13, as shown in Figure 5 The arrangement of the stop block 15 can prevent the push rod 3 from being pulled out of the roller groove 13, and can also limit the opening angle of the door body 2. It can be understood that within the opening angle, the user can intervene and control the opening direction of the door body 2 at any time.

[0044] Similar to the embodiment two, the limiting grooves 8 are symmetrically arranged on the two sides of the sliding surface 4 near the end of the door body 2, the working principle and effect of the limiting grooves 8 are the same as those of the limiting grooves 8 in the embodiment two, and the limiting grooves 8 can provide auxiliary limiting effect when the door body 2 is closed. Further, the corresponding segment grooves 16 can be arranged on the two sides of the sliding surface 4 in the middle of the push rod 3, when the contact roller 17 of the pushing piece 6 moves to the segment groove 16, the door body 2 can be stopped, so that the opening angle of the door body 2 is fixed, and when the door body 2 needs to be opened by a small angle for use, the segment groove 16 can be used.

[0045] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An auxiliary door opening device of a refrigerator door frame assembly comprising a cabinet (1) and a door body (2), characterized in that, Also include push rod (3), the push rod (3) is slidably connected with the box (1), the first end of the push rod (3) is connected with the door body (2), at least one side of the push rod (3) is provided with sliding surface (4), the width of the sliding surface (4) from the first end to the second end of the push rod (3) is gradually narrowed; Clamping drive part (5), the clamping drive part (5) is arranged on the box (1), the clamping drive part (5) has pusher (6) matched with sliding surface (4), the pusher (6) is placed in the track cavity, the elastic element (7) is arranged between the bottom of the track cavity and the pusher (6), the end of the pusher (6) is slidably connected with the sliding surface (4), the end of the pusher (6) extrudes the sliding surface (4), so that the door body (2) is subjected to the component force perpendicular to the door body (2), which assists the door body (2) to open; The push rod (3) is a straight rod, the first end of the push rod (3) is hingedly connected with the door body (2), the sliding surface (4) is arranged on both sides of the push rod (3) respectively, and the distance between the two sliding surfaces (4) gradually decreases from the first end to the second end of the push rod (3); The clamping drive part (5) is arranged on the turntable (12), the turntable (12) is rotatably connected with the box (1), the clamping drive part (5) is provided with two, and the two clamping drive parts (5) are symmetrically arranged on the turntable (12), and the two pushers (6) are oppositely arranged.

2. The door opening assist device of claim 1, wherein, The turntable (12) is also provided with a roller groove (13), the push rod (3) is slidably connected in the roller groove (13), the roller groove (13) is perpendicular to the line direction of the two clamping drive parts (5), the roller groove (13) is provided with an inner wall roller (14), the inner wall roller (14) is rotatably connected with the side wall of the push rod (3), the second end of the push rod (3) is provided with a stop block (15), and the width of the stop block (15) is greater than the width of the roller groove.

3. The auxiliary door opening device of a refrigerator door frame assembly according to claim 2, characterized in that, The two sliding surfaces (4) on both sides of the push rod (3) close to the door body (2) are symmetrically provided with limiting grooves (8), and the two sliding surfaces (4) on both sides of the middle part of the push rod (3) are provided with segment grooves (16).

4. The door opening assist device of claim 1, wherein The end of the pusher (6) is rotatably connected with a contact roller (17), and the elastic element (7) is a spring.

5. The door opening assist device of any one of claims 1-4, wherein, The track cavity is also provided with an elastic adjusting part, the elastic adjusting part comprises a push plate (19) and a bolt (20), the push plate (19) is arranged between the spring and the track cavity, the bolt (20) is threadedly connected with the bottom surface of the track cavity, and the end of the bolt (20) is rotatably connected with the push plate (19).

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