CN215951917U

CN215951917U - Refrigerator with a door

Info

Publication number: CN215951917U
Application number: CN202122339948.8U
Authority: CN
Inventors: 李利云; 鲍雨锋; 张建; 申乃雨
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-03-04
Anticipated expiration: 2031-09-26

Abstract

The utility model provides a refrigerator, which comprises a refrigerator body, a door body and a door opening and closing actuator, wherein the refrigerator body is hollow inside, the door body is hinged with the refrigerator body, and the door opening and closing actuator is connected between the refrigerator body and the door body; the door opening and closing actuator includes: the clutch gear module is arranged at the top of the box body; the rack is arc-shaped; the rack is meshed with the output part of the clutch gear module and moves towards the direction of the door body under the driving of the clutch gear module; the push rod comprises a first rod section and a second rod section which are connected in a bent mode; the tail end of the first rod section, which is far away from the second rod section, is connected with the door body; the second rod section is arranged on the rack, the tail end of the second rod section is positioned on the inner side of the opening of the rack, and the tail end is hinged with the top of the box body; the second rod section moves along with the rack and rotates around the hinged end of the second rod section and the box body, so that the first rod section is driven to push the door body away, and the door body is separated from the box body. The door opening and closing actuator can reliably realize automatic door opening and closing of the refrigerating chamber by adopting smaller torque, and has high practicability.

Description

Refrigerator with a door

Technical Field

The utility model relates to the technical field of household refrigeration equipment, in particular to a refrigerator.

Background

At present, the market of high-end refrigerators tends to be more intelligent and automatic, wherein the refrigeration automatic opening and closing door is one of the more important components. Through the auto-induction, alright realize the automatic switch door of refrigerator, liberated consumer's both hands.

The existing refrigeration automatic opening and closing door mainly has two forms, one is small-angle top opening; the other is a rotary switch, the latter is more applied, generally, the hinge shaft of the door body is driven to rotate together through the rotation of the gear, however, the torque required for opening the door is very large, the requirement on the strength of the gear is high, the gear is easy to damage, the service life of the gear is short, and the normal use is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a refrigerator, which meets the requirements of convenience in opening and closing a door and high reliability of the refrigerator.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a refrigerator comprises a refrigerator body with a hollow interior, a door body hinged with the refrigerator body, and a door opening and closing actuator connected between the refrigerator body and the door body; the door opening and closing actuator includes: the clutch gear module is arranged at the top of the box body; the rack is arc-shaped; the rack is meshed with the output part of the clutch gear module and moves towards the door body under the driving of the clutch gear module; the push rod comprises a first rod section and a second rod section which are connected in a bent mode; the tail end of the first rod section, which is far away from the second rod section, is connected with the door body; the second rod section is arranged on the rack, the tail end of the second rod section is positioned on the inner side of the opening of the rack, and the tail end is hinged with the top of the box body; the second rod section moves along with the rack and rotates around the hinged end of the second rod section and the box body, so that the first rod section is driven to push the door body away, and the door body is separated from the box body.

According to one aspect of the utility model, the axis of rotation of the rack coincides with the hinged end of the second rod section.

According to one aspect of the utility model, the end of the second segment near the first segment is hinged to the rack.

According to one aspect of the utility model, the upper surface of the rack is concavely provided with a guide hole; the second pole section is provided with a guide post in a protruding mode, the guide post is matched with the guide hole in size, and the guide post is rotatably arranged in the guide hole.

According to one aspect of the utility model, the guide hole is located on the front end of the rack close to the door body.

According to one aspect of the utility model, the end of the first segment is bent and spaced from and opposite to the second segment.

According to one aspect of the utility model, the door opening and closing actuator further comprises a guide rail; the guide rail is arranged on the upper end face of the door body and extends along the width direction of the door body; the end is in sliding fit with the guide rail.

According to one aspect of the utility model, the clutch gear module comprises a base fixed on the top of the box body, and a motor, a transmission gear and an electromagnetic clutch which are arranged on the base; the motor is provided with a worm, and the worm is meshed with the transmission gear and drives the transmission gear to rotate; the electromagnetic clutch is arranged on one side, far away from the worm, of the transmission gear, teeth are arranged on the outer peripheral surface of the electromagnetic clutch and are respectively meshed with the transmission gear and the rack, and the electromagnetic clutch is an output portion.

According to one aspect of the utility model, the electromagnetic clutch comprises a friction plate and a clutch rotor which are opposite up and down, wherein the friction plate is coaxially sleeved on an input shaft of the clutch rotor and is attracted with the clutch rotor when being electrified; the outer peripheral surfaces of the friction plate and the clutch rotor are respectively provided with teeth, and the friction plate is meshed with the transmission gear so as to drive the clutch rotor to synchronously rotate; the rack is engaged with the outer periphery of the clutch rotor and moves in the circumferential direction of the clutch rotor.

According to one aspect of the utility model, the base is recessed to form a rack slot having an arcuate profile adapted to the shape of the rack for receiving the rack; a notch is formed in the middle of the rack groove and is opposite to the electromagnetic clutch; openings at two ends of the rack groove are respectively communicated with the outside, so that the rack can extend out or retract into the groove in the direction close to the door body.

According to the technical scheme, the refrigerator provided by the utility model at least has the following advantages and positive effects:

the door opening and closing actuator adopts a movable push rod to drive the door body to rotate, and the door body is automatically opened and closed by using smaller driving torque. Specifically, the clutch gear module and the rack are arranged at the top of the box body, and the rack can move towards the door body under the driving of the clutch gear module. The push rod is provided with two parts which are connected in a bending way, wherein the first rod section is connected with the door body; the second rod section is connected with the rack and can move along with the rack, so that the first rod section is pushed, the door body is opened outwards and separated from the box body, and automatic door opening is realized; the force arm that first pole section and second pole section can provide is longer, and the power of required switch door is less, has prolonged overall structure's life. Meanwhile, the tail end of the second rod section is positioned on the inner side of the opening of the rack and is hinged with the top of the box body; so, the second pole section still rotates around above-mentioned hinged end when removing, and the atress of second pole section is more even, removes more stably, has guaranteed the switch door steady reliable, guarantees the normal use of refrigerator.

Drawings

Fig. 1 is a schematic view of the overall structure of a refrigerator according to an embodiment of the present invention.

Fig. 2 is an assembly view of the door opening and closing actuator of fig. 1.

Fig. 3 is an exploded view of a door actuator according to an embodiment of the present invention.

Fig. 4 is a schematic view illustrating a door body in a closed state according to an embodiment of the present invention.

Fig. 5 is a schematic view illustrating that the push rod pushes the door body forward in the embodiment of the utility model.

Fig. 6 is a schematic view illustrating that the door body is pushed away completely according to the embodiment of the utility model.

The reference numerals are explained below:

200-a box body,

300-door body,

100-a door opening and closing actuator,

1-clutch gear module, 11-base, 101-mounting groove, 102-rack groove, 103-notch, 12-motor base, 13-motor, 131-worm, 14-transmission gear, 141-turbine, 142-gear, 15-electromagnetic clutch, 151-friction plate, 152-clutch rotor,

2-a rack,

3-push rod, 31-first rod section, 32-second rod section, 321-hinged end, 33-sliding shaft, 34-guide column, 4-guide rail and 401-sliding groove.

Detailed Description

Exemplary embodiments that embody features and advantages of the utility model are described in detail below in the specification. It is to be understood that the utility model is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the utility model and the description and drawings are to be regarded as illustrative in nature and not as restrictive.

This embodiment provides a refrigerator, and it has the switch door executor of locating between the box and the door body, can adopt less moment of torsion just can realize walk-in automatic switch door reliably, and the practicality is high.

Referring to fig. 1, fig. 1 shows a specific structure of a refrigerator provided in this embodiment. The refrigerator mainly comprises a refrigerator body 200 with a hollow inner part, a door body 300 hinged with the refrigerator body 200, and a door opening and closing actuator 100 connected between the refrigerator body 200 and the door body 300. The door opening and closing actuator 100 includes a clutch gear module 1, a rack 2 and a push rod 3. The clutch gear module 1 and the rack 2 are disposed at the top of the box 200, and the rack 2 is engaged with the output part of the clutch gear module 1 and moves toward the door 300 under the driving of the clutch gear module 1. One end of the push rod 3 is connected with the door body 300, the other end of the push rod is hinged with the top of the box body 200, and the push rod 3 rotates around the hinged end under the driving of the rack 2, so that the door body 300 is pushed open to separate the door body 300 from the box body 200.

The refrigerator of the present embodiment is a multi-door refrigerator, and the space inside the cabinet 200 is divided into a refrigerating chamber at an upper portion, a temperature-changing chamber at a middle portion, and a freezing chamber at a lower portion according to the refrigerating temperature. The door bodies 300 of the refrigerating chamber are designed as double doors, and one door body 300 is provided with a touch display screen for a user to observe and adjust the temperature of each chamber. The door opening and closing actuator 100 is disposed close to the door 300 provided with the display screen to automatically open and close the refrigerating chamber, thereby bringing convenience to life of users.

In other embodiments, not limited to a multi-door refrigerator, the door opening and closing actuator 100 may be applied to various refrigerators such as a rotary single-door refrigerator and a double-door refrigerator.

Referring to fig. 2 and 3 together, the clutch gear module 1 includes a base 11 fixed on the top of the box 200, and a motor 13, a transmission gear 14 and an electromagnetic clutch 15 disposed on the base 11.

The base 11 is approximately rectangular. The periphery of the base 11 is provided with an annular side edge so as to enclose the installation groove 101 with an upward opening. A motor base 12 is provided at a corner of the mounting groove 101.

The motor 13 is horizontally mounted on the motor base 12. The motor 13 is a dc motor. The output shaft of the motor 13 projects forward and is coaxially connected to the worm 131 through a coupling.

The transmission gear 14 is arranged beside the worm 131, is in meshed transmission with the worm 131 and rotates around a vertical axis under the driving of the motor 13. Specifically, the transmission gear 14 includes a combined worm gear 141 and gear 142. The worm wheel 141 is directly engaged with the worm 131, and the worm wheel 141 rotates and drives the gear 142 to rotate.

The electromagnetic clutch 15 is provided on the side of the transmission gear 14 remote from the worm 131. The outer peripheral surface of the electromagnetic clutch 15 is provided with teeth, and is engaged with the pinion 14 and the rack 2 via the teeth, respectively. In operation, the transmission gear 14 rotates, and the electromagnetic clutch 15 engaged with the transmission gear rotates around the axis of the electromagnetic clutch under the power of rotation. At this time, the rack 2 is located on the other side of the electromagnetic clutch 15 from the transmission gear 14.

When the electromagnetic clutch 15 rotates, the position of the electromagnetic clutch 15 is kept, and the electromagnetic clutch 15 is used as an active output part to drive the rack 2 to perform integral translation along the circumferential direction. When the electromagnetic clutch 15 rotates forward, the rack 2 moves forward close to the door 300, and when the electromagnetic clutch rotates backward, the rack 2 retracts forward away from the door 300 to an initial position.

The electromagnetic clutch 15 can control the engagement and disengagement of the clutch by turning on and off the coil. The principle is as follows: the electromagnetic clutch 15 is an electromagnetic mechanical connector that can couple or decouple a driven member to or from a driving member in a mechanical transmission system without stopping rotation of the driving member by applying an electromagnetic induction principle and a frictional force between inner and outer friction plates.

As shown in fig. 3, the electromagnetic clutch 15 includes a friction plate 151 and a clutch rotor 152 that are opposed to each other in the up-down direction. The friction plate 151 has a through hole at the center thereof, and the friction plate 151 is coaxially fitted on the input shaft at the upper end of the clutch rotor 152 through the through hole. When energized, the friction plate 151 and the clutch rotor 152 are attracted together and are in an engaged state. The outer circumferential surfaces of the friction plate 151 and the clutch rotor 152 each have teeth. The friction plate 151 is engaged with the transmission gear 14, and the friction plate 151 rotates around a set vertical axis and transmits a rotational torque to the clutch rotor 152, thereby driving the clutch rotor 152 to rotate synchronously. The rack 2 is engaged with the outer periphery of the clutch rotor 152 and moves along the circumferential direction of the clutch rotor 152, so that the push rod 3 is driven, and automatic door opening is realized.

When the electromagnetic clutch 15 is not electrified, the resistance of the motor 13 and the gear cannot be transmitted to the rack 2 because the electromagnetic clutch 15 is not attracted, and the door is opened and closed manually.

In the present embodiment, the electromagnetic clutch 15 has a small size, can transmit a large torque, and has an advantage that braking is rapid and smooth when used for braking control. In other embodiments, the electromagnetic clutch is not limited.

Further, the base 11 is also recessed to form a rack groove 102.

The rack slot 102 has an arcuate profile adapted to the shape of the rack 2 for receiving the rack 2. One end (front end) of the rack groove 102 in the circumferential direction thereof is located in the mounting groove 101, and a notch 103 is provided on one side of the end, the notch 103 allowing the rack groove 102 to communicate with the mounting groove 101. The notch 103 faces the electromagnetic clutch 15, so that the portion of the rack 2 exposed from the notch 103 can mesh with the electromagnetic clutch 15. The other end of the rack slot 102 is located outside the mounting slot 101.

Both ends of the rack slot 102 are open to the outside, respectively, so that the rack 2 is extended or retracted into the slot in a direction close to the door body 300.

The push rod 3 comprises a first rod segment 31 and a second rod segment 32 which are integrally formed by bending.

The first segment 31 and the second segment 32 are approximately perpendicular to each other, forming an "L" shaped structure. The two are in arc transition connection.

The end of the first rod segment 31, which is far away from the second rod segment 32, is connected to the door 300. Also, the length of the first pole segment 31 is greater than the length of the second pole segment 32. When pushing the door body 300, the moment arm that first pole section 31 can provide is longer, and the power that required motor 13 opened the door is less, and is low to the intensity requirement of gear 142 and rack 2, has avoided the too big damage that causes the structure of moment of torsion, has prolonged holistic life.

The first rod segment 31 has a bent end, which is opposite to the second rod segment 32 at a distance. The end is used for realizing sliding connection with the door body 300.

Correspondingly, the door actuator 100 further comprises a guide rail 4. The guide rail 4 is provided on an upper end surface of the door 300 and extends in the width direction of the door 300. The guide rail 4 is internally provided with a sliding chute 401, and the cross section of the sliding chute 401 is similar to a convex shape. A sliding shaft 33 is arranged at the end of the first rod section 31 in a penetrating manner, and the sliding shaft 33 extends into the sliding groove 401 and forms sliding fit with the guide rail 4.

The second rod section 32 is connected to the toothed rack 2 and can be moved together with the toothed rack 2. The end of the second rod segment 32 remote from the first rod segment 31, which is hinged to the top of the box 200, is located inside the opening of the rack 2, and is a hinged end 321. During rotation, the rotation axis of the rack 2 coincides with the hinge end 321 of the second rod segment 32, so that the stability of rotation of the second rod segment 32 can be better ensured.

At the same time, the end of the second rod section 32 close to the first rod section 31 is articulated to the toothed rack 2.

Specifically, a guide hole (not shown) is concavely formed in an upper surface of a front end of the rack 2, and the guide hole has a cylindrical shape. The second pole section 32 is provided with a guide post 34 in a protruding manner, the guide post 34 is matched with the guide hole in size, and the guide post 34 is accommodated in the guide hole so as to be pivoted with the guide hole. The advantage is that when the second rod section 32 rotates, the part of the second rod section connected with the rack 2 can rotate in the guide hole together, and is not rigidly connected, so that the concentration of stress is avoided, and the damage of the second rod section 32 is avoided.

In this embodiment, the door opening and closing actuator 100 drives the door 300 to rotate through the push rod 3, the required torque is only 1/10-1/5 of the traditional rotary switch, and the reliability is better. Furthermore, the manual and automatic opening and closing of the door are not affected by the electromagnetic clutch 15.

Referring to fig. 4 to 6 together, when the user issues a door opening/closing command during door opening, the motor 13 is energized, the electromagnetic clutch 15 is energized, and the motor 13 drives the rack 2 to rotate. The second rod segment 32 moves forward together with the rack 2, and at the same time, the second rod segment 32 rotates around the hinged end 321, so as to drive the first rod segment 31 to extend forward, and further push the door 300 to rotate outward. Along with the increase of the extending length of the first rod section 31, the outward opening angle of the door body 300 is larger and larger until the door body 300 is completely separated from the box body 200, so that the automatic door opening is realized.

When the door is opened and closed manually, the electromagnetic clutch 15 is not electrified, and when the door is opened and closed manually, the push rod 3 is drawn to drive the rack 2 to rotate, and because the electromagnetic clutch 15 is not attracted, the resistance of the motor 13 and the gear cannot be transmitted to the rack 2, and the door opening and closing force is not influenced.

In summary, the refrigerator provided by the utility model at least has the following advantages and positive effects:

the door opening and closing actuator 100 drives the door body 300 to rotate by adopting the movable push rod 3, and realizes the automatic opening and closing of the door body 300 by using smaller driving torque. Specifically, the clutch gear module 1 and the rack 2 are both disposed at the top of the box 200, and the rack 2 can move toward the door 300 under the driving of the clutch gear module 1. The push rod 3 has two parts which are connected in a bending way, wherein the first rod section 31 is connected with the door body 300; the second rod section 32 is connected with the rack 2 and can move along with the rack 2, so that the first rod section 31 is pushed, the door body 300 is separated from the box body 200 and is opened outwards, and automatic door opening is realized; the first rod section 31 and the second rod section 32 can provide a longer arm of force, and the power required for opening and closing the door is smaller. Meanwhile, the end of the second rod segment 32 is located inside the opening of the rack 2 and is hinged with the top of the box body 200; so, second pole section 32 still rotates around above-mentioned hinged end when removing, and the atress of second pole section 32 is more even, and it is more stable to remove, has guaranteed that the switch door is steady reliable.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A refrigerator comprises a refrigerator body with a hollow interior, a door body hinged with the refrigerator body, and a door opening and closing actuator connected between the refrigerator body and the door body; characterized in that, the switch door executor includes:

the clutch gear module is arranged at the top of the box body;

the rack is arc-shaped; the rack is meshed with the output part of the clutch gear module and moves towards the door body under the driving of the clutch gear module;

the push rod comprises a first rod section and a second rod section which are connected in a bent mode; the tail end of the first rod section, which is far away from the second rod section, is connected with the door body; the second rod section is arranged on the rack, the tail end of the second rod section is positioned on the inner side of the opening of the rack, and the tail end is hinged with the top of the box body; the second rod section moves along with the rack and rotates around the hinged end of the second rod section and the box body, so that the first rod section is driven to push the door body away, and the door body is separated from the box body.

2. The refrigerator as claimed in claim 1, wherein the rotational axis of the rack coincides with the hinge end of the second rod section.

3. The refrigerator of claim 1, wherein an end of the second pole segment proximate to the first pole segment is hinged to the rack.

4. The refrigerator according to claim 3, wherein a guide hole is concavely formed on an upper surface of the rack; the second pole section is provided with a guide post in a protruding mode, the guide post is matched with the guide hole in size, and the guide post is rotatably arranged in the guide hole.

5. The refrigerator according to claim 4, wherein the guide hole is located at a front end of the rack adjacent to the door body.

6. The refrigerator as claimed in claim 1, wherein the first rod segment has a bent end and is spaced apart from and opposite to the second rod segment.

7. The refrigerator of claim 6, wherein the door opening and closing actuator further comprises a guide rail; the guide rail is arranged on the upper end face of the door body and extends along the width direction of the door body; the end is in sliding fit with the guide rail.

8. The refrigerator according to claim 1, wherein the clutch gear module comprises a base fixed on the top of the refrigerator body, and a motor, a transmission gear and an electromagnetic clutch arranged on the base; the motor is provided with a worm, and the worm is meshed with the transmission gear and drives the transmission gear to rotate; the electromagnetic clutch is arranged on one side, far away from the worm, of the transmission gear, teeth are arranged on the outer peripheral surface of the electromagnetic clutch and are respectively meshed with the transmission gear and the rack, and the electromagnetic clutch is an output portion.

9. The refrigerator according to claim 8, wherein the electromagnetic clutch includes a friction plate and a clutch rotor which are opposite up and down, the friction plate is coaxially sleeved on the input shaft of the clutch rotor and is attracted with the clutch rotor when being electrified; the outer peripheral surfaces of the friction plate and the clutch rotor are respectively provided with teeth, and the friction plate is meshed with the transmission gear so as to drive the clutch rotor to synchronously rotate; the rack is engaged with the outer periphery of the clutch rotor and moves in the circumferential direction of the clutch rotor.

10. The refrigerator of claim 8, wherein the base is recessed to form a rack slot having an arcuate profile adapted to a shape of the rack for receiving the rack; a notch is formed in the middle of the rack groove and is opposite to the electromagnetic clutch; openings at two ends of the rack groove are respectively communicated with the outside, so that the rack can extend out or retract into the groove in the direction close to the door body.