CN210832718U - A supplementary switch door executor and refrigerator for refrigerator - Google Patents

Abstract

The utility model discloses an auxiliary door opening and closing actuator for refrigerators and a refrigerator, which relate to the technical field of refrigerators and are invented to solve the problem of insufficient torque for opening and closing doors of refrigerators in the prior art, and the doors cannot be opened and closed normally. The auxiliary door switch actuator of the utility model comprises a drive mechanism and a toggle member arranged on the box body, and a protrusion arranged on the door body. One end of the toggle member is rotatably connected with the box body, and the drive mechanism is used to drive the toggle member. The moving member rotates with its length as the radius, the protrusion is arranged on the side of the door body surface away from the hinge shaft of the door body, and the end of the rotating connection of the toggle member and the box body corresponds to the position of the protrusion; when the protrusion is located on the dial When the moving member is within the rotation track of the moving member, the driving mechanism can drive the turning member to rotate, and move the protrusion in the closing direction of the door body, so as to drive the door body to close. The auxiliary door opening and closing actuator for refrigerators of the utility model is used for refrigerators.

Description

Auxiliary switch door actuator for refrigerator and refrigerator

technical field

The utility model relates to the technical field of refrigerators, in particular to an auxiliary door opening and closing actuator for refrigerators and a refrigerator.

Background technique

Refrigerator is a common household appliance in people's daily life. Opening and closing the door of the refrigerator is the most frequent operation. However, in daily life, sometimes the hands are occupied due to too many things taken out from the refrigerator. When the door is closed in time, the preservation of food will be affected. Therefore, a refrigerator with an automatic door opening and closing function is required in the prior art.

A refrigerator with an automatic door opening and closing device in the prior art, as shown in FIG. 1, includes a box body 002 and a door body 001. The box body 002 is provided with a driving gear 003, and the door body 001 is provided with a driven gear 004. The gear 003 meshes with the driven gear 004, the driving gear 003 is driven by the motor, and the driven gear 004 is fixedly connected with the rotating shaft of the door body 001. When opening and closing the door, start the motor, the motor drives the driving gear 003 to rotate, and the driving gear 003 drives the driven gear 004 rotates, because the rotating shaft of the door body 001 is fixedly connected with the driven gear 004, therefore, when the driven gear 004 rotates, it will drive the rotating shaft of the door body 001 to rotate together, thereby realizing the automatic opening and closing of the door. However, as shown in Figure 1, the door opening and closing force provided by the motor is F, and the force arm is L. Therefore, the generated torque for opening and closing the door is F×L. That is, the lever arm L is small, and the automatic door opening and closing device installed on the refrigerator is completely powered by the motor, which drives the rotating shaft to rotate to open and close the door, especially when the door is closed, if it cannot provide enough torque, it will cause the door body 001 to not close properly. Strict situations occur.

In order to solve the above problems, the prior art adopts a hook-type suction aid to cooperate with the above-mentioned door opening and closing device. As shown in Figure 2, the hook-type suction aid includes a hook-type body 005 and a hinge 006. The hook-type body 005 is arranged on the door body, and the hinge 006 Set on the box body, the hook body 005 is provided with a first convex hook 051, and the hinge is provided with a second convex hook 061. When the door body rotates to the preset position in the closing direction, the first convex hook 051 and the second convex hook The protruding hooks 061 are engaged with each other. Since the hook-shaped body 005 is made of elastic material, the first protruding hook 051 and the second protruding hook 061 will deform when they are engaged with each other, and the restoring force of the first protruding hook 051 will cause the door However, when the first convex hook 051 and the second convex hook 061 are engaged with each other, the apex of the hook-shaped structure of the first convex hook 051 needs to cross the hook-shaped structure of the second convex hook 061 first. The apex of the structure, so that the first convex hook 051 and the second convex hook 061 are mutually clamped, and when the apex of the hook-shaped structure of the first convex hook 051 contacts the second convex hook, it will deform, as shown in FIG. 3 . It is shown that the deformation at this time will generate a restoring force that makes the door body rotate in the opening direction. Therefore, the automatic door opening and closing device needs to provide a torque sufficient to overcome the deformation, so that the hook-shaped structure vertex of the first convex hook 051 passes over the second convex hook. Only at the apex of the hook-shaped structure of 061 can the first protruding hook 051 and the second protruding hook 061 be snapped together, so that the door can be closed normally. The torque of the two convex hooks 061 being snapped to each other, therefore, there is still a problem that the torque is limited and the door cannot be closed normally.

Utility model content

The embodiments of the present invention provide an auxiliary door opening and closing actuator for a refrigerator and a refrigerator, which can provide assistance for closing the refrigerator door and realize normal door closing.

In order to achieve the above object, the embodiment of the present utility model adopts the following technical solutions:

One aspect of an embodiment of the present utility model provides an auxiliary door opening and closing actuator for a refrigerator, which includes a drive mechanism and a toggle member disposed on the box body, and a protrusion disposed on the door body, the toggle member has a One end is rotatably connected with the box body, the drive mechanism is used to drive the toggle member to rotate with its length as a radius, and the protrusion is arranged on a surface of the door body away from the hinge shaft of the door body. On the side, one end of the toggle member rotatably connected to the box body corresponds to the position of the protrusion;

When the protrusion is located in the rotation track of the toggle member, the driving mechanism can drive the toggle member to rotate, and toggle the protrusion in the closing direction of the door body to drive the door body closure.

The auxiliary door opening and closing actuator for the refrigerator provided by the embodiment of the present invention provides assistance for closing the door body through the toggle member and the protrusion arranged on the box body and the door body. At one end of the hinge shaft of the door body, the toggle piece corresponds to the position of the protrusion. Therefore, the distance between the driving mechanism and the hinge shaft of the door body is larger, that is, the force arm is larger. Therefore, it can provide a larger torque for closing the door. When the rotation track of the toggle member is within the range of rotation, the driving mechanism drives the toggle member to rotate, so that the toggle member can toggle the protrusion, so that the protrusion drives the door body to close, and no other resistance needs to be overcome during the closing process of the door body, in order to close the door. The door body provides assistance so that the door can be closed normally.

Another embodiment of the present utility model further provides a refrigerator, comprising a box body, a door body, and the auxiliary door opening and closing actuator for a refrigerator according to the above technical solution, the box body is provided with a storage room, and the The door body is hinged to the opening of the storage compartment, and the toggle member is used to pull the protrusion on the door body and drive the door body to close the storage compartment.

Since the refrigerator provided by the embodiment of the present invention is provided with the auxiliary door opening and closing actuator for the refrigerator according to the above solution, the same technical problem can be solved and the same technical effect can be produced, that is, the protrusion is pulled by the toggle member, The protrusion drives the door to close the storage compartment.

Description of drawings

1 is a schematic structural diagram of an automatic door opening and closing device in the prior art;

Fig. 2 is the structural representation of hook type suction aid in the prior art;

3 is a schematic structural diagram of the hook-type suction aid in the prior art before the first convex hook and the second convex hook are clamped when the door is closed;

4 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;

FIG. 5 is an exploded view of the implementing mechanism of the embodiment of the present utility model;

6 is a schematic structural diagram of the actuator push rod at the origin, the spur gear and the rack are separated, and the first bevel gear meshes with the second bevel gear according to the embodiment of the present utility model;

Fig. 7 is the front view of Fig. 6;

FIG. 8 is a schematic structural diagram of the relative position of the spur gear and the rack in the state of FIG. 6;

9 is a schematic structural diagram of the actuator push rod extending, the spur gear and the rack being separated, and the first bevel gear meshing with the second bevel gear according to an embodiment of the present utility model;

Fig. 10 is the front view of Fig. 9;

Figure 11 is a schematic structural diagram of the relative position of the spur gear and the rack in the state of Figure 9;

12 is a schematic structural diagram of an initial state in which both the push rod and the toggle member are at the origin when the door of the refrigerator according to the embodiment of the present invention is closed;

13 is a schematic structural diagram of the refrigerator door according to the embodiment of the present invention when it is pushed open by a push rod;

14 is a schematic structural diagram of the push rod returning to the origin after the door of the refrigerator according to the embodiment of the present invention is fully opened;

15 is a schematic diagram of the rotation direction of the toggle member after the door body of the refrigerator according to the embodiment of the present invention is rotated in the closing direction to a preset position;

16 is a schematic structural diagram of the guide plate of the toggle member in contact with the guide post according to the embodiment of the present invention;

17 is a schematic structural diagram of the guide post sliding along the guide plate and driving the door body to close according to the embodiment of the present invention;

18 is a schematic structural diagram of the guide post and the toggle member after the door body is closed according to the embodiment of the present invention.

Reference numerals: 1. Box; 11. Drive mechanism; 111, Drive motor; 112, Spur gear; 113, First bevel gear; 12, Toggle member; 121, Guide plate; 1211, Guide surface; ; 131, transmission section; 132, idling section; 133, push section; 134, rack; 14, shaft; 141, second bevel gear; 142, connecting key; 15, adjusting plate; 151, first plane; 152, Inclined surface; 153, second plane; 154, strip groove; 16, fixed seat; 17, spring; 18, bottom plate; 19, shell; 2, door body; 21, guide post.

Detailed ways

An auxiliary door opening and closing actuator for a refrigerator and a refrigerator provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" , "top", "bottom", "inside", "outside" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description, rather than indicating Or imply that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

The terms "first" and "second" are only used for descriptive purposes, and should not 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 expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

An auxiliary door opening and closing actuator for a refrigerator provided by an embodiment of the present invention, as shown in FIG. 4 and FIG. 5 , includes a drive mechanism 11 and a toggle member 12 arranged on the box body 1, and a door body arranged on the door body. 2, one end of the toggle member 12 is rotatably connected to the box 1, and the drive mechanism 11 is used to drive the toggle member 12 to rotate with its length as a radius. On the surface of the door body 2 away from the hinge shaft of the door body 2, the toggle member 12 corresponds to the position of the end of the rotating connection of the box body 1 and the guide post 21; when the When the protrusion is located in the rotation track of the toggle member 12, the driving mechanism 11 can drive the toggle member 12 to rotate, and move the protrusion in the closing direction of the door body 2, thereby driving the door Body 2 is closed.

The auxiliary door opening and closing actuator for the refrigerator provided by the embodiment of the present invention provides assistance for closing the door body 2 through the toggle member 12 and the protrusions arranged on the box body 1 and the door body 2. Since the protrusions are arranged on the door On the end of the body 2 away from the hinge shaft of the door body 2, the toggle member 12 corresponds to the convex position. Therefore, the distance between the driving mechanism 11 and the hinge shaft of the door body 2 is relatively large, that is, the force arm is relatively large. With larger torque, when the protrusion is within the range of the rotation track of the toggle member 12, the driving mechanism 11 drives the toggle member 12 to rotate, so that the toggle member 12 can toggle the protrusion in the closing direction of the door body 2, so that the protrusion The starter drives the door body 2 to close, and there is no need to overcome other resistances during the closing process of the door body 2, so as to provide assistance for closing the door body 2, thereby realizing normal door closing.

The toggle member 12 provided by the embodiment of the present invention is disposed on the top surface of the box body 1 . As shown in FIG. 12 , a guide plate 121 is provided on the surface of the free end of the toggle member 12 facing the box body 1 . , the guide plate 121 is provided with a guide surface 1211, and the protrusion is a guide post 21; when the guide post 21 is located in the rotation track of the toggle member 12, the toggle member 12 rotates and makes all The guide post 21 is in contact with the guide surface 1211, and then the toggle member 12 continues to rotate, so that the guide plate 121 can toggle the guide post 21 and the door body 2 to rotate, and make the guide post 21 rotate. slide relative to the guide surface 1211 . When the guide post 21 on the door body 2 is within the rotation track of the toggle member 12, as shown in FIG. The guide surface 1211 contacts, as shown in Figure 16, and the toggle member 12 continues to rotate. Since the toggle member 12 rotates in the direction of the box body 1 and is getting closer and closer to the box body 1, as shown in Figure 17, the guide The column 21 will slide along the guide surface 1211 of the guide plate 121, and drive the door body 2 to rotate in the door closing direction, thereby closing the door body 2, as shown in FIG. 18 .

After the toggle member 12 closes the door body 2 , the toggle member 12 can be rotated in the opposite direction to the initial position, or can continue to rotate in the original direction, so that the guide post 21 is driven from the guide plate 121 into the toggle member 12 One end of the rotating shaft is released, and then the toggle member 12 is rotated to the initial position; compared with the scheme in which the toggle member 12 rotates in the opposite direction, the toggle member 12 continues to rotate in the original direction without sending a reverse command to the drive mechanism 11. Control is more convenient.

Since the toggle member 12 needs to drive the door body 2 to close, the rotation direction of the toggle member 12 is the same as the rotation direction of the door body 2 when the door body 2 is closed, so that the driving mechanism 11 drives the toggle member 12 to provide assistance for the door body 2 to close. Then the door body 2 is closed.

When the refrigerator is opened, the torque is insufficient and the door cannot be opened normally. Therefore, in the embodiment of the present invention, a push rod 13 is provided on the box body 1. As shown in FIG. 5 , the push rod 13 is formed by the The drive mechanism 11 controls sliding, and the push rod 13 is used to push the door body 2 to open. Since the drive mechanism 11 is located away from the rotation axis of the door body 2, it can provide a large torque when opening the door, so that the push rod 13 pushes the door body 2 to separate from the box body 1, and provides assistance for the refrigerator to open the door, so that the door can be opened normally.

In order to enable the driving mechanism 11 to precisely control the rotation of the toggle member 12, the embodiment of the present invention adopts gear transmission to control the rotation of the toggle member 12. As shown in FIG. 5 and FIG. 12, the driving mechanism 11 includes a driving motor 111 and a first A bevel gear 113, the first bevel gear 113 is connected with the output shaft of the drive motor 111, the end of the toggle member 12 and the box 1 are connected by a rotating shaft 14, and the rotating shaft 14 is connected to the output shaft of the driving motor 111. The box body 1 is rotatably connected, the rotating shaft 14 is provided with a second bevel gear 141 , and the first bevel gear 113 meshes with the second bevel gear 141 . Because the gear transmission has the advantages of accurate transmission ratio and high efficiency, the extension and retraction of the push rod 13 can be precisely controlled, and the gear transmission is reliable and has a long service life, which can reduce the failure rate of the refrigerator.

The push rod 13 provided by the embodiment of the present invention also adopts gear transmission to control the sliding. As shown in FIG. 5 and FIG. 8 , the driving mechanism 11 includes a driving motor 111 and a spur gear 112 , and the spur gear 112 is connected with the drive The rotating shaft of the motor 111 is connected; the push rod 13 is provided with a rack 134 , the rack 134 is arranged parallel to the length direction of the push rod 13 , and the rack 134 meshes with the spur gear 112 . The first bevel gear 113 and the spur gear 112 are driven by the same driving motor 111, and one driving element is used, which effectively reduces the number of parts of the refrigerator.

The above-mentioned rack 134 and the push rod 13 can be a separate structure or an integrated structure. Compared with the split structure, the one-piece structure can further reduce the number of parts of the refrigerator, make the sliding of the push rod 13 more stable, and has the advantages of Good for beauty.

Since the process of opening and closing the door is two independent actions, the push rod 13 and the toggle member 12 cannot move at the same time. Therefore, two driving motors 111 can be provided to control the sliding of the push rod 13 and the rotation of the toggle member 12 respectively. Through the following technical solution, as shown in FIG. 5 , the box body 1 is further provided with an adjustment plate 15 , the adjustment plate 15 is connected with the push rod 13 and slides together, and the adjustment plate 15 is along its length. A strip-shaped groove 154 is opened in the direction of the adjustment plate 15. The top surface of the adjustment plate 15 includes a first plane 151, an inclined plane 152 and a second plane 153 in sequence along the length direction of the adjustment plate 15. The first plane 151 is arranged close to the At one end of the door body 2, the second plane 153 is higher than the first plane 151, as shown in Figures 6 and 9; the rotating shaft 14 is a stepped shaft, and the end of the rotating shaft 14 with a smaller diameter is inserted into The strip groove 154 is rotatably connected with the box body, and the stepped surface of the rotating shaft 14 is in contact with the top surface of the adjustment plate 15; the push rod 13 sequentially includes a transmission section 131 and a push section along the length direction. 133, as shown in FIG. 8 and FIG. 11, the push section 133 is arranged at one end close to the door body 2, the rack 134 is arranged on the transmission section 131, and the push section 133 is adjacent to the One end of the transmission segment 131 corresponds to the position of the first plane 151 ; as shown in FIGS. 9 , 10 and 11 , when the stepped surface of the rotating shaft 14 contacts the second plane 153 , the first The bevel gear 113 is separated from the second bevel gear 141, and the spur gear 112 meshes with the rack 134. As shown in FIG. 6, FIG. 7, and FIG. When a plane 151 is in contact, the first bevel gear 113 meshes with the second bevel gear 141 , the spur gear 112 is separated from the rack 134 and is located at the pushing section 133 . Compared with the solution of providing two driving motors 111, setting one driving motor 111 reduces the number of parts, making the overall structure more compact, and the sliding of the push rod 13 and the rotation of the toggle member 12 are controlled by one driving motor 111, and only need to adjust The driving motor 111 can be rotated forward or reversely, and the operation is simple and convenient.

The adjusting plate 15 provided by the embodiment of the present invention is provided with two parts, a high part and a low part, and the second plane 153 in the high part corresponds to the transmission section 131 of the push rod 13 , and the low first plane 151 corresponds to the push section 133 The end portion adjacent to the transmission section 131 corresponds. Specifically, as shown in FIG. 6 , when the push rod 13 is in the original position, the stepped surface of the rotating shaft 14 is in contact with the first plane 151. When the push rod 13 slides toward the door body 2, That is, during the door opening process, as shown in FIGS. 9 and 11 , the adjusting plate 15 also slides toward the side of the door body 2 , at this time, as shown in FIG. At this time, the first bevel gear 113 is separated from the second bevel gear 141, and the push rod 13 extends out and contacts with the door body 2. As shown in FIG. 13, the door body 2 is pushed to be separated from the box body 1, and then the door body 2 is pushed out manually or automatically by the refrigerator. The door opening and closing device continues to complete the door opening, as shown in FIG. 14 , and the driving motor 111 reverses and retracts the push rod 13 to the original position. At this time, the rotating shaft 14 is in contact with the first plane 151 , and the first bevel gear 113 is meshed with the second bevel gear 141 , the spur gear 112 is located at one end of the pushing segment 133 close to the transmission segment 131 , that is, the spur gear 112 is just separated from the gear, as shown in FIGS. 7 and 8 .

When the door is closed, the door body 2 rotates in the door-closing direction until the guide post 21 is located in the rotation track of the toggle member 12. At this time, the driving motor 111 continues to reverse. The gear 112 is idling, and the first bevel gear 113 drives the second bevel gear 141 to rotate, that is, the toggle member 12 rotates. As shown in FIGS. 6 , 7 , 8 and 15 , the toggle member 12 rotates to the guide post 21 . , and make the guide post 21 contact the guide surface 1211 of the guide plate 121, as shown in FIG. 16, and then the toggle member 12 continues to rotate. During the rotation of the toggle member 12, the guide post 21 slides along the guide surface 1211 of the guide plate 121, as shown in As shown in FIG. 17 , when the door body 2 is closed, as shown in FIG. 18 , the guide post 21 is separated from the other end of the guide plate 121 and separated from the toggle member 12 , and then the toggle member 12 continues to rotate to the original position, as shown in FIG. 12 . When the door is opened again, the drive motor 111 can be controlled to rotate forward, and then the above process is repeated.

In addition, the first plane 151 and the second plane 153 are connected by an inclined plane 152 , so that when the adjusting plate 15 slides, the rotating shaft 14 can be raised and lowered through the inclined plane 152 .

In order to prevent the spur gear 112 from idling in the push section 133, the push rod 13 is driven to slide due to the frictional force in contact with the surface of the push section 133. As shown in FIG. 8 and FIG. 11 , the push rod 13 further includes: The idling section 132, the idling section 132 is arranged between the transmission section 131 and the pushing section 133, the idling section 132 corresponds to the position of the first plane 151, as shown in FIG. 9 and FIG. 11 , The vertical distance from the surface of the box body 1 in contact with the push rod 13 to the surface of the idling section 132 facing the toggle member 12 is smaller than the distance from the surface of the box body 1 in contact with the push rod 13 to the surface of the box body 1 in contact with the push rod 13. The vertical distance of the surface of the push segment 133 facing the toggle member 12 . The idle section 132 is lower than the push section 133. Therefore, when the spur gear 112 is idle in the idle section 132, the push section 133 blocks the spur gear 112 to prevent the push rod 13 from sliding due to friction, which affects the normal opening and closing of the door.

The above-mentioned rotating shaft 14 needs to raise or lower the vertical position according to the opening or closing of the door. If ordinary rotating parts such as deep groove ball bearings are used, although the rotation can be realized, the end of the rotating shaft 14 with the smaller diameter is connected to the inner ring or outer ring of the bearing. The ring needs to be fixedly connected and cannot be lifted and lowered. Therefore, the technical effect to be achieved by this solution cannot be achieved. Therefore, the embodiment of the present invention adopts the technical solution shown in FIG. 5. The box body 1 is provided with a fixed seat 16, so The fixing seat 16 is provided with a hole for inserting the end of the rotating shaft 14 with a smaller diameter, and the end with a smaller diameter on the rotating shaft 14 penetrates the strip groove 154 and is inserted into the hole on the fixing seat 16 , Therefore, it is rotatably connected with the box body 1 . By arranging the fixing seat 16 on the box body 1, the fixing seat 16 is provided with a hole, and inserting the smaller diameter end of the rotating shaft 14 into the hole can realize the rotational connection between the rotating shaft 14 and the box body 1, and the rotating shaft 14 It can be expanded or retracted in the hole, that is, raised or lowered. The rotary connection has a simple structure and a reasonable design.

When the rotating shaft 14 slides from the second plane 153 to the first plane 151 , due to some external factors, the rotating shaft 14 cannot smoothly descend to contact the first plane 151 , so that the first bevel gear 113 cannot smoothly contact the second bevel gear 141 Meshing, for example, the components are worn for a long time, resulting in dimensional changes, which cannot be perfectly matched, or excessive dust and debris between the gaps lead to increased friction and other factors. In the illustrated solution, a spring 17 is sleeved on the rotating shaft 14 , and the spring 17 is arranged between the second bevel gear 141 and the toggle member 12 . When the rotating shaft 14 is on the second plane 153, the spring 17 is in a compressed state. When the rotating shaft 14 slides to the first plane 151, under the elastic force of the spring 17, the rotating shaft 14 is lowered and contacts the first plane 151, and the structure is simple. , easy to use.

A connection key 142 is provided at one end of the rotating shaft 14 provided by the embodiment of the present invention that is connected to the toggle member 12 . As shown in FIG. 5 , FIG. 9 , and FIG. 10 , the connection key 142 is inserted into the toggle member. 12, and the connecting key 142 can be retracted in the through hole, the through hole matches the shape of the connecting key 142, when the second bevel gear 141 on the rotating shaft 14 rotates , the connection key 142 can drive the toggle member 12 to rotate. The rotating shaft 14 and the toggle member 12 are connected through the connecting key 142 and the corresponding through hole. When the rotating shaft 14 slides up and down between the first plane 151 and the second plane 153 , the position of the toggle member 12 in the vertical direction can remain unchanged. , so as to avoid the situation that the guide plate 121 and the guide post 21 do not match the high and low positions of the guide plate 121 when the toggle member 12 rotates because they are not lowered to the original position after being raised.

Preferably, as shown in FIG. 5 , the box body 1 is provided with a bottom plate 18 and a housing 19 , the housing 19 is provided on the bottom plate 18 , the driving mechanism and the push rod 13 are provided in the housing, the An opening is provided on the side wall of the housing facing the door body 2 , and the opening is used to extend the push rod 13 , and the rotating shaft 14 extends from the top of the housing 19 and the toggle 12 connections. The bottom plate 18 can be more conveniently installed on the refrigerator, and the casing 19 can effectively protect the driving mechanism and the push rod 13, so that the overall actuator is more compact and easy to install.

The embodiment of the present invention also provides a refrigerator, as shown in FIG. 4 and FIG. 12 , comprising a box body 1, a door body 2, and the auxiliary door opening and closing actuator for the refrigerator described in the above-mentioned embodiments, the box body 1 is provided with a storage room, the door body 2 is hinged to the opening of the storage room, and the toggle member 12 is used to pull the protrusion on the door body 2 and drive the door body 2 Close the storage compartment.

Since the refrigerator provided by the embodiment of the present invention is provided with the auxiliary door opening and closing actuator for the refrigerator according to the above solution, the same technical problem can be solved and the same technical effect can be produced, that is, the protrusion can be pulled by the toggle member 12 . , so that the protrusion drives the door body 2 to close the storage room.

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

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (13)

1. An auxiliary door opening and closing actuator for a refrigerator is characterized by comprising a driving mechanism and a poking piece which are arranged on a refrigerator body, and a protrusion arranged on a door body, wherein one end of the poking piece is rotatably connected with the refrigerator body, the driving mechanism is used for driving the poking piece to rotate by taking the length of the poking piece as a radius, the protrusion is arranged on one side, far away from a hinge shaft of the door body, of the surface of the door body, and the position of the protrusion corresponds to that of one end, rotatably connected with the refrigerator body, of the poking piece;

when the protrusion is located in the rotating track of the poking piece, the driving mechanism can drive the poking piece to rotate and poke the protrusion towards the closing direction of the door body so as to drive the door body to close.

2. The auxiliary door opening and closing actuator for a refrigerator according to claim 1, wherein the toggle member is disposed on a top surface of the refrigerator body, a guide plate is disposed on a surface of a free end of the toggle member facing the refrigerator body, a guide surface is disposed on the guide plate, and the protrusion is a guide post;

when the guide post is located in the rotating track of the guide plate, the poking piece rotates and enables the guide post to be in contact with the guide surface, the poking piece continues to rotate, the guide plate can poke the guide post and the door body to rotate, and the guide post slides relative to the guide surface.

3. The auxiliary door opening and closing actuator for a refrigerator as claimed in claim 2, wherein after the door body is closed, the guide post is disengaged from one end of the guide plate close to the rotating shaft of the toggle member, and the driving mechanism can drive the toggle member to rotate continuously to an initial position.

4. The auxiliary door opening and closing actuator for the refrigerator as claimed in claim 2, wherein the rotation direction of the toggle member is the same as the rotation direction of the door body when the door body is closed.

5. The auxiliary door opening and closing actuator for the refrigerator as claimed in any one of claims 1 to 4, wherein a push rod is further disposed on the refrigerator body, the push rod is controlled by the driving mechanism to slide, and the push rod is used for pushing the door body to open.

6. The auxiliary door opening and closing actuator for the refrigerator as claimed in claim 5, wherein the driving mechanism comprises a driving motor and a first bevel gear, the first bevel gear is connected with an output shaft of the driving motor, the end of the toggle member is connected with the refrigerator body through a rotating shaft, a second bevel gear is arranged on the rotating shaft, and the first bevel gear is meshed with the second bevel gear.

7. The auxiliary door opening and closing actuator for a refrigerator as claimed in claim 6, wherein the driving mechanism further comprises a spur gear, one end of the spur gear is connected to the output shaft of the driving motor, and the other end of the spur gear is connected to the first bevel gear; and a rack is arranged on the push rod along the length direction of the push rod and is meshed with the straight gear.

8. The auxiliary door opening and closing actuator for the refrigerator as claimed in claim 7, wherein the box body is further provided with an adjusting plate, the adjusting plate is connected with the push rod and slides together with the push rod, a strip-shaped groove is formed in the adjusting plate along the length direction of the adjusting plate, the top surface of the adjusting plate sequentially comprises a first plane, an inclined plane and a second plane along the length direction of the adjusting plate, the first plane is arranged at one end close to the door body, the second plane is higher than the first plane, the rotating shaft is a stepped shaft, one end of the rotating shaft with a smaller diameter is inserted into the strip-shaped groove and is rotatably connected with the box body, and the stepped surface of the rotating shaft is in contact with the top surface of the adjusting plate;

the push rod sequentially comprises a transmission section and a pushing section along the length direction, the pushing section is arranged at one end close to the door body, the rack is arranged on the transmission section, and one end, close to the transmission section, of the pushing section corresponds to the position of the first plane;

when the step surface of the rotating shaft is in contact with the second plane, the first bevel gear is separated from the second bevel gear, the straight gear is meshed with the rack, when the step surface of the rotating shaft is in contact with the first plane, the first bevel gear is meshed with the second bevel gear, and the straight gear is separated from the rack.

9. The auxiliary door opening and closing actuator for a refrigerator of claim 8, further comprising an idle rotation section disposed between the transmission section and the push section, wherein the idle rotation section corresponds to the first plane, and wherein a top surface of the push section is higher than a top surface of the idle rotation section.

10. The door actuator as claimed in claim 8, wherein the housing has a fixing seat, the fixing seat has a hole for inserting the shaft, and the smaller end of the shaft is inserted into the hole of the fixing seat through the strip-shaped slot.

11. The auxiliary door opening and closing actuator for a refrigerator as claimed in claim 8, wherein a spring is sleeved on the rotating shaft and is arranged between the second bevel gear and the toggle member.

12. The auxiliary door opening and closing actuator for a refrigerator as claimed in claim 8, wherein a connection key is provided at an end of the rotating shaft connected to the toggle member, the connection key is inserted into a through hole of the toggle member and is capable of extending and retracting in the through hole, the through hole matches with the connection key in shape, and when the rotating shaft rotates, the connection key drives the toggle member to rotate.

13. A refrigerator, characterized in that, it includes a box body, a door body and the auxiliary door opening and closing actuator for a refrigerator according to any one of claims 1-12, the box body is provided with a storage chamber, the door body is hinged with an opening of the storage chamber, the toggle piece is used for pulling the protrusion on the door body and driving the door body to close the storage chamber.

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