A refrigerator

Abstract

The present invention discloses a refrigerator, which relates to the field of refrigeration technology. The present invention solves the technical problem of the continuous noise during the automatic opening of the door of an existing refrigerator. The refrigerator of the present invention includes a box body and a door body. The interior of the box body forms a storage chamber. The door body is hinged to the opening of the storage chamber by a hinge shaft and a hinge plate. The refrigerator also includes a drive assembly, an ejection mechanism, and a rotation mechanism. The ejection mechanism includes a push rod arranged in a mounting seat and a groove wheel connected to the drive assembly. The sliding direction of the push rod is parallel to the thickness direction of the door body. The push rod has a plurality of guide posts arranged along its extension direction. The guide posts and the push rod are perpendicular to each other. The groove wheel is provided with a plurality of radial grooves. When the groove wheel rolls along the extension direction of the push rod, the radial grooves can be sequentially sleeved on the corresponding guide posts, and the guide posts are moved to drive the push rod to slide between a retracted position and an extended position. When the push rod is in the extended position, the guide posts are disengaged from the radial grooves. The present invention can be used to improve the performance of refrigerators.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration, and in particular to a refrigerator. Background Art

[0002] The refrigerator in the prior art uses a door opening and closing device to realize the automatic opening and closing of the refrigerator door. Figure 1 At present, the door opening and closing device includes a driving motor (not shown in the figure) connected to the control unit, a driving wheel 03 installed on the output shaft of the driving motor, and a driven wheel 05 meshing with the driving wheel 03. The driven wheel 05 meshes with the circumferential meshing teeth 06 set on the hinge shaft (used to rotate and connect the door body 02 and the box body 01), and a push rod 04 is provided on the box body 01, and a transmission tooth 07 meshing with the driving wheel 03 is provided on the push rod 04.

[0003] The specific process of opening door body 02 is as follows: the control unit controls the output shaft of the drive motor to rotate in a first rotation direction, driving the driving wheel 03 to rotate, thereby driving the push rod 04 to move toward door body 02 to push door body 02 open. At the same time, the driving wheel 03 also drives the driven wheel 05 to rotate in the opposite direction. The rotating driven wheel 05 acts on the meshing teeth 06 on the hinge shaft to drive the door body 02 to rotate around the hinge shaft, ultimately achieving the opening of door body 02. The specific process of closing door body 02 is as follows: the control unit controls the output shaft of the drive motor to rotate in a second rotation direction, driving the driving wheel 03 to rotate, thereby driving the push rod 04 to move away from door body 02. At the same time, the driving wheel 03 also drives the driven wheel 05 to rotate in the opposite direction, thereby driving the door body 02 to rotate around the hinge shaft to close door body 02. The first rotation direction is opposite to the second rotation direction.

[0004] Figure 1 In the door opening and closing device shown, when the control unit controls the driving motor to rotate, the driving wheel 03 drives the push rod 04 to move and push open the door body. In the process, the driving wheel 03 also drives the driven wheel 05 to rotate to open the door body 02. Therefore, when the push rod 04 reaches the extended position, since the door body 02 needs to continue to open, the driving wheel 03 still needs to continue to rotate. At this time, the driving wheel 03 and the push rod 04 are not engaged but are still in contact with each other. The push rod 04 is always in the extended position. Every time the driving wheel 03 rotates one tooth, the push rod 04 moves back and forth slightly. The teeth of the driving wheel 03 rub against the transmission teeth 06 of the push rod 04 once, generating a noise. In order to meet the set transmission ratio, the number of teeth of the driving wheel 03 is generally large. Therefore, there will be continuous noise in the entire process from the refrigerator door body 02 being pushed open to being fully opened, resulting in a poor user experience. Summary of the Invention

[0005] An embodiment of the present invention provides a refrigerator, which solves the technical problem of continuous noise during the automatic opening process of the door of the existing refrigerator.

[0006] To achieve the above-mentioned object, an embodiment of the present invention provides a refrigerator, comprising: a box body having a storage chamber formed therein; a door body hinged at an opening of the storage chamber; and a driving assembly; an ejection mechanism and a rotation mechanism driven by the driving assembly; the ejection mechanism being used to push the door body open to a preset angle; the rotation mechanism being used to cause the door body to continue to rotate after the ejection mechanism pushes the door body open to open the storage chamber; the ejection mechanism comprising: a push rod disposed in a mounting seat and slidable between a retracted position and an extended position, the sliding direction of the push rod being parallel to the thickness direction of the door body, the push rod having a plurality of guide posts disposed along its extension direction, the guide posts being perpendicular to the push rod; a sheave transmission-connected to the driving assembly, the sheave being provided with a plurality of radial grooves, wherein when the sheave rolls along the extension direction of the push rod, the plurality of radial grooves can be sequentially sleeved on corresponding guide posts, and the guide posts are moved to drive the push rod to slide between the retracted position and the extended position; and when the push rod is in the extended position, the guide posts at the end thereof are out of the radial grooves.

[0007] The refrigerator provided by the embodiment of the present invention includes a driving assembly and an ejection mechanism and a rotation mechanism driven by the driving assembly. The ejection mechanism is used to push the door body open to a preset angle; the rotation mechanism is used to make the door body continue to rotate to open the storage chamber after the ejection mechanism pushes the door body open; the ejection mechanism adopts a grooved wheel guide column structure, the push rod has a plurality of guide columns arranged along its extension direction, the guide columns and the push rod are perpendicular to each other, the grooved wheel is transmission-connected to the driving assembly, and the grooved wheel is correspondingly provided with a plurality of radial grooves. When the driving assembly drives the grooved wheel to roll along the extension direction of the push rod, the radial grooves can be sequentially sleeved on the corresponding guide columns, and the guide columns are moved to drive the push rod to slide between the retracted position and the extended position. Since the sliding direction of the push rod is parallel to the thickness direction of the door body, the push rod can push the door body open when it is in the extended position. After the push rod reaches the extended position, the guide column at the end disengages from the radial groove, and the grooved wheel continues to rotate. When the radial notch portion hits the top of the guide column again, a noise is generated. Therefore, since the transmission ratio does not need to be considered, the number of radial slots can be set as needed, and the number of radial slots can be much less than the number of teeth of the driving wheel, so the frequency of the radial slot hitting the guide column is greatly reduced. Therefore, in the subsequent door opening process, the noise frequency is also greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0009] Figure 1 It is a structural diagram of the ejection mechanism and the rotation mechanism of a refrigerator in the prior art;

[0010] Figure 2 This is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;

[0011] Figure 3 Schematic diagram of the installation appearance of the drive motor, ejection mechanism and mounting base in the refrigerator according to an embodiment of the present invention;

[0012] Figure 4 This is a schematic diagram of the installation of a drive motor, an ejection mechanism, and a rotation mechanism in a refrigerator according to an embodiment of the present invention;

[0013] Figure 5 This is a schematic diagram of the connection between the first steering mechanism, the first speed reduction mechanism and the ejection mechanism in the refrigerator according to the present invention;

[0014] Figure 6 This is a schematic structural diagram of an ejection mechanism in a refrigerator according to an embodiment of the present invention;

[0015] Figure 7 This is a diagram showing a state in which a push rod in a refrigerator according to an embodiment of the present invention is about to be ejected;

[0016] Figure 8 This is a diagram showing a state where a push rod is being pushed out in a refrigerator according to an embodiment of the present invention;

[0017] Figure 9 This is a diagram showing a state where a push rod is being pushed out in a refrigerator according to an embodiment of the present invention;

[0018] Figure 10 This is a state diagram of a refrigerator in an embodiment of the present invention when the push rod is pushed out;

[0019] Figure 11 Schematic diagram of the structure of the second steering mechanism in the refrigerator according to an embodiment of the present invention;

[0020] Figure 12 The figure is a schematic structural diagram of a rotating mechanism in a refrigerator according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0025] Reference Figures 2 to 7 , an embodiment of the present invention provides a refrigerator, comprising a box body 1 and a door body 2, wherein a storage chamber is formed inside the box body 1, and the door body 2 is hinged at the opening of the storage chamber by a hinge shaft 4 and a hinge plate 5, and the refrigerator further comprises a driving assembly and an ejection mechanism 33 and a rotation mechanism 36 driven by the driving assembly; the ejection mechanism 33 is used to push the door body 2 open to a preset angle; the rotation mechanism 36 is used to make the door body 3 continue to rotate after the ejection mechanism 33 pushes the door body 2 open, so as to open the storage chamber; the ejection mechanism 33 comprises a push rod 332 arranged in a mounting seat 392 and a groove wheel 331 connected to the driving assembly, the push rod 33 The push rod 332 can slide between a retracted position and an extended position. The sliding direction of the push rod 332 is parallel to the thickness direction of the door body 2. The push rod 332 has a plurality of guide posts 334 arranged along its extension direction. The guide posts 334 and the push rod 332 are perpendicular to each other. The sheave 331 has a plurality of radial grooves 335. When the sheave 331 rolls along the extension direction of the push rod 332, the radial grooves 335 can be sequentially sleeved on corresponding guide posts 334, and the guide posts 334 are moved to drive the push rod 332 to slide between the retracted position and the extended position. When the push rod 332 is in the extended position, the end guide post 334 is disengaged from the radial groove 335. The end guide post 334 is the last guide post to engage with the radial groove 335 during the extension process of the push rod 332.

[0026] When the push rod 332 is in the extended position, the guide posts 334 at the end are disengaged from the radial grooves 335, and the pulley 331 continues to rotate. When the mouth of the radial groove 335 hits the top of the guide post 334 again, a noise is generated. Therefore, since the transmission ratio is not a consideration, the number of radial slots 335 can be set as needed. The number of radial slots 335 can be significantly less than the number of teeth on the driving wheel. This significantly reduces the frequency of the openings of radial slots 335 striking guide posts 334, thereby significantly reducing the frequency of noise during the subsequent door opening process. For example, the number of radial slots 335 on the sheave 331 can be four, with sheave 331 generating a slipping tooth every quarter turn, significantly reducing the frequency of noise.

[0027] The distance between two adjacent radial grooves 335 along the outer circumferential surface of the groove wheel 331 is equal to the distance between two adjacent guide pillars 334. Therefore, when the groove wheel 331 drives the push rod 332 to move, every time the groove wheel 331 rotates one circle, two adjacent radial grooves 335 will simultaneously move the corresponding guide pillars 334, which can improve the stability of the transmission.

[0028] Since the push rod 332 has a large inertia when extending or retracting, in order to prevent the push rod 332 from sliding out of the mounting seat 392 or directly colliding with the mounting seat 392, causing damage to the push rod 332 or the mounting seat 392, refer to Figures 7 to 10 A first limiting member 336 and a second limiting member 338 can be set inside the mounting seat 392. The first limiting member 336 is close to the outer side of the mounting seat 392 to prevent the push rod 332 from sliding out of the mounting seat 392 when the push rod 332 is in the extended position; the second limiting member 338 is located on the inner side of the mounting seat 392 to prevent the push rod 332 from directly contacting the mounting seat 392 when the push rod 332 is in the retracted position, thereby preventing the push rod 332 or the mounting seat 392 from being damaged.

[0029] The first limiting member 336 and the second limiting member 338 can both be limiting plates. The ejection mechanism 33 can also include a third limiting member 339 provided on the side of the push rod. When the push rod 332 is in the extended position, the third limiting member 339 contacts the first limiting member 336. When the push rod 332 is in the retracted position, the third limiting member 339 contacts the second limiting member 338. The third limiting member 339 can be an elastic member. Figures 7 to 10 When the push rod 332 is extended, driven by the driving motor 31, as the groove wheel 331 continues to rotate in the clockwise direction, the groove wheel 331 will be separated from the guide post on the outermost edge of the push rod 332. Since the groove wheel 331 has been separated from the guide post on the push rod 332, the groove wheel 331 can continue to rotate in the clockwise direction, but it is difficult to rotate in the counterclockwise direction. Therefore, an elastic member, namely the third limiting member 339 and the first limiting member 336 and the second limiting member 338, can be used. In coordination, when the third limiting member 339 moves synchronously with the push rod 332 and the third limiting member 339 contacts the first limiting member 336, if the sheave 331 tends to rotate counterclockwise, the push rod 332 will be pushed toward the sheave 331 under the elastic force of the two limiting members. This ensures that the sheave 331 engages with the guide post 334 on the push rod 332, thereby ensuring that the sheave 331 rotates counterclockwise and smoothly drives the push rod 332. Similarly, when the push rod 332 retracts, the sheave 331 is difficult to rotate clockwise. At this time, the push rod 332 will be pushed toward the sheave 331 under the action of the third limiting member 339. This ensures that the sheave 331 engages with the guide post 334 at the other end of the push rod 332, thereby ensuring that the sheave 331 rotates clockwise and smoothly drives the push rod 332. Therefore, the combination of the limiting plate and the elastic member not only limits the movement of the push rod 332 , but also ensures the continuity of the movement of the entire push rod 332 and the groove wheel 331 .

[0030] In order to obtain a suitable transmission ratio, the drive assembly may include a drive motor 31 and a transmission mechanism arranged on the output shaft of the drive motor 31. For example, the transmission mechanism may be a chain drive. The disadvantage of this structure is that the structure is loose and the transmission smoothness is poor. For another example, the transmission mechanism may also be a gear drive, and the transmission gear 333 is connected to the groove wheel 331 for transmission. Specifically, the transmission gear 333 can be fixed on the same transmission shaft as the groove wheel 331. The advantages of this structure are compact structure, smooth transmission and high transmission accuracy.

[0031] Reference Figure 6The sheave 331 and the transmission gear 333 can be an integral part or a separate part. If the sheave 331 and the transmission gear 333 are separate parts, the sheave 331 and the transmission gear 333 need to be disassembled and assembled separately during disassembly and assembly, which is inconvenient, and the structure is loose and occupies a large space. If the sheave 331 and the transmission gear 333 are an integral part, it is easy to disassemble and assemble, and the structure is compact and occupies a small space.

[0032] The mounting base 392 can be installed in a variety of positions. For example, the mounting base 392 can be installed on the outside of the top of the box body 1; for another example, refer to Figure 2 and Figure 4 , a mounting cavity can also be provided at the top of the door body 2, and the mounting seat 392 can be installed in the mounting cavity; if the mounting seat 392 is installed on the outside of the top of the box body 1, the mounting seat 392 will protrude from the top of the box body 1, which will cause the top of the refrigerator to be uneven, affecting the aesthetics of the refrigerator, and it is also inconvenient to place items on the top of the refrigerator; if the mounting seat 392 is installed in the mounting cavity at the top of the door body 2, since the mounting seat 392 will not be higher than the height of the door body 2, after the door body 2 is closed, the mounting seat 392 will not be exposed, the top of the refrigerator is also flat, which will not affect the aesthetics of the refrigerator, and it is also very convenient to place items on the top of the refrigerator. In order to prevent debris from falling into the mounting seat 392 and to make it more beautiful, an upper cover 391 is provided on the upper part of the mounting seat 392, which is interlocked with the mounting seat 392. The upper end of the hinge shaft 4 extends out of the upper cover 391 and is connected to the hinge plate 5. The output shaft of the drive motor 31 is located in the mounting seat 392, and the main part of the drive motor 31 is located outside the mounting seat 392. In order to prevent the drive motor 31 from being bumped, a motor cover 311 is provided on the outside of the drive motor 31.

[0033] Reference Figure 4 and Figure 12 The rotating mechanism 36 includes a second driven gear 361 , and the hinge shaft 4 has meshing teeth 362 arranged along its circumference and meshing with the second driven gear 361 . The rotating mechanism 36 converts the rotation of the drive motor 31 into the rotation of the hinge shaft 4 .

[0034] Reference Figure 4 The output end of the driving motor 31 can also be connected to the rotating mechanism 36 through the clutch 34. That is, when the driving motor 31 drives the ejection mechanism 33 to move, the power is cut off through the clutch 34 to put the rotating mechanism 36 in a locked state, thereby preventing the large torque at the moment of opening the door from damaging the rotating mechanism 36, thereby improving the working stability of the refrigerator.

[0035] Because the drive motor 31 typically rotates at a high speed, and if the door 2 opens too quickly, its inertia is significant, if the door 2 encounters resistance during rotation, it cannot stop rotating in time, potentially damaging the door 2 or the drive motor 31. Furthermore, if a user accidentally bumps into the rapidly opening door 2, they can be injured. To ensure that the ejection mechanism 33 can push the door 2 open within a preset timeframe and the rotation mechanism 36 can fully open the door 2 within another preset timeframe, a first reduction mechanism 32 can be provided between the output end of the drive motor 31 and the clutch 34, and a second reduction mechanism 35 can be provided between the output end of the clutch 34 and the rotation mechanism 36. After the ejection mechanism 33 pushes the door 2 open, the second reduction mechanism 35 can further reduce the speed of the drive motor 31, allowing the rotation mechanism 36 to slowly open the door 2. This reduces damage to the door 2 or the drive motor 31 and improves refrigerator safety. Furthermore, the second reduction mechanism 35 can increase torque and transmit the increased torque to the rotation mechanism 36, reducing performance requirements for the rotation mechanism 36. The second speed reduction mechanism 35 may be a speed reduction gear set.

[0036] By controlling the reduction ratio of the first reduction mechanism 32, the ejection mechanism 33 can push the door body 2 to a preset position within a preset time, and by controlling the reduction ratio of the second reduction mechanism 35, the rotation mechanism 36 can fully open the door body 2 within another preset time period. For example, the ejection mechanism 33 can push the door body 2 to 8° to 15° within 1 second, and the rotation mechanism 36 can fully open the door body 2 within 4 seconds.

[0037] In order to make the transmission smoother, the first reduction mechanism 32 generally adopts multi-stage reduction. For example, the first reduction mechanism 32 may include a second driving gear provided on the driving shaft and a plurality of first driven gears respectively provided on different driven shafts. The disadvantage of this structure is that if the number of transmission stages needs to be increased, the number of driven shafts must be increased, the structure is complex, and the space occupied is large. For another example, referring to Figure 5 The first reduction mechanism 32 may further include a first mounting shaft 321 connected to the output end of the drive motor 31, a first gear 322 and at least one second duplex gear 324, both of which are sleeved on the first mounting shaft 321, a second mounting shaft 325 arranged parallel to the first mounting shaft 321, and at least one first duplex gear 323 sleeved on the second mounting shaft 325. The second duplex gear 324 is rotatable relative to the first mounting shaft 321, meaning that the first mounting shaft 321 does not transmit torque. The first duplex gear 323 is rotatable relative to the second mounting shaft 325, meaning that the second mounting shaft 325 does not transmit torque.

[0038] Reference Figure 5, for example, the number of the first double gears 323 can be two, and the number of the second double gears 324 can also be two. Since the first gear 322 is fixedly connected to the first installation shaft 321, and the first double gear 323 can rotate relative to the second installation shaft 325, and the second double gear 324 can rotate relative to the first installation shaft 321, the two gears in the first double gear 323 and the second double gear 324 are different in size. Therefore, when the driving motor 31 drives the first installation shaft 321 to rotate, the first gear 322 can drive one of the large gears in the first double gear 323 to rotate, The first double gear 323 rotates the large gear in one of the second double gears 324, achieving a second reduction. The second double gear 324 rotates the large gear in another first double gear 323, achieving a third reduction. The first double gear 323 rotates the large gear in another second double gear 324, achieving a fourth reduction. The small gear in the second double gear 324 meshes with the transmission gear 333, transmitting the increased torque to the ejection mechanism 33 and the rotation mechanism 36. The output end of the second mounting shaft 325 is fitted with a shaft head 327. One end of the shaft head 327 is fixedly connected to the other second double gear 324, and the other end is fixedly connected to the input shaft of the clutch 34. This structure has the advantage that when the number of transmission stages needs to be increased, only the number of first and second double gears 323, 324, needs to be increased, without increasing the number of mounting shafts. This results in a simpler and more compact structure, taking up less space.

[0039] Reference Figure 4 and Figure 5 In order to make the structure of the refrigerator more compact, the drive motor 31 can be arranged along the height direction of the door body 2, and the first installation shaft 321 can be arranged along the width direction of the door body 2. A first steering mechanism 37 is arranged between the drive motor 31 and the first installation shaft 321 to convert the rotation of the output shaft of the drive motor 31 around the height direction of the door body 2 into a rotation of the first installation shaft 321 around the width direction of the door body 2, so that the ejection mechanism 33 can smoothly push open the door body 2; a second steering mechanism 38 can be arranged between the output end of the clutch 34 and the rotating mechanism 36, and the second steering mechanism 38 can convert the rotation of the output shaft of the clutch 34 around the width direction of the door body 2 into the rotation of the rotating mechanism 36 around the height direction of the door body 2, so that the rotating mechanism 36 can smoothly drive the door body 2 to rotate.

[0040] The first steering mechanism 37 has a variety of structures that can be realized. For example, the first steering mechanism 37 can adopt a bevel gear mechanism; for another example, refer to Figure 5The first steering mechanism 37 can also be a worm gear mechanism, which includes a worm wheel 371 and a worm 372. The worm 372 is disposed on the output shaft of the drive motor 31, and the worm wheel 371 is disposed at the input end of the first mounting shaft 321 and meshes with the worm 372. Since the first steering mechanism 37 is directly connected to the drive motor 31, the larger the transmission ratio of the first steering mechanism 37, the better. Compared with a bevel gear mechanism, a worm gear mechanism has a more compact structure, a larger transmission ratio, and a smoother transmission. In addition, since the meshing tooth surfaces of the two wheels in the worm gear mechanism are in line contact, its load-bearing capacity is also much higher than that of a bevel gear mechanism. Therefore, a worm gear mechanism is preferred.

[0041] The second steering mechanism 38 has a variety of achievable structures. For example, the second steering mechanism 38 can be a worm gear mechanism; for another example, refer to Figure 11 The second steering mechanism 38 can also be a bevel gear mechanism. The bevel gear mechanism includes a first bevel gear 381, a second bevel gear 382, ​​and a transmission shaft 383. The first bevel gear 381 is mounted on the output shaft of the clutch 34. The second bevel gear 382 meshes with the first bevel gear 381. The rotation axis of the second bevel gear 382 is perpendicular to the rotation axis of the first bevel gear 381. The transmission shaft 383 is arranged along the height direction of the door body 2. The second bevel gear 382 is mounted on the input end of the transmission shaft 383, and the output end of the transmission shaft 383 is connected to the second reduction mechanism 35. Compared with worm gear mechanisms, bevel gear mechanisms have higher transmission efficiency and lower cost. Therefore, bevel gear mechanisms are preferred.

[0042] During the opening process of the door body 2, if the door body 2 encounters resistance but the drive motor 31 cannot stop rotating in time, the drive motor 31 or the rotating mechanism 36 is easily damaged. Therefore, a potentiometer 6 that rotates synchronously with the door body 2 can be used to detect the rotation angle of the door body 2. The rotating shaft of the potentiometer 6 is connected to the hinge shaft 4 of the door body 2. As the rotation angle of the hinge shaft 4 changes, the output voltage value of the potentiometer 6 also changes accordingly. The control unit is configured to control the operation of the drive component according to the output voltage value of the potentiometer 6. If the output voltage value of the potentiometer 6 continues to change, it means that the movement state of the door body 2 is normal and the drive component continues to operate; if the output voltage value of the potentiometer 6 does not change, it means that the door body 2 encounters resistance during movement and the drive component stops operating. Therefore, when the door body 2 encounters resistance, the drive component can be stopped in time, effectively avoiding damage to the drive component or the rotating mechanism 36.

[0043] There are many possible installation methods for the potentiometer 6. For example, the rotating shaft of the potentiometer 6 can be directly connected to the hinge shaft 4 or the first driven gear 351. The disadvantage of this structure is that the rotation speed of the rotating shaft of the potentiometer 6 needs to be the same as that of the hinge shaft 4 or the first driven gear 351. The rotation speed of the rotating shaft of the potentiometer 6 cannot be adjusted separately, and it is not easy to make the peak and valley values ​​of the output voltage of the potentiometer 6 correspond exactly to the fully open state and the fully closed state of the door body 2, which may cause inaccurate detection. For another example, refer to Figure 12 The rotating shaft of the potentiometer 6 can also rotate with the mounting gear 7. The mounting gear 7 is engaged with the first driven gear 351. The first driven gear 351 can drive the rotating shaft of the potentiometer 6 to rotate, so that the output voltage of the potentiometer 6 changes. The advantage of this structure is that the rotation speed of the rotating shaft of the potentiometer 6 can be adjusted by adjusting the transmission ratio of the mounting gear 7 and the first driven gear 351, so that the peak and valley values ​​of the output voltage value of the potentiometer 6 correspond exactly to the fully open state and the fully closed state of the door body 2, and the detection is more accurate.

[0044] The potentiometer 6 includes three ports, namely an input terminal P1, an input terminal P2 and an output terminal P3. The input terminal P1 is connected to the negative pole of the power supply, the input terminal P2 is connected to the positive pole of the power supply, and the output terminal P3 is connected to the control unit.

[0045] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A refrigerator comprising: A box body having a storage chamber formed therein; The door body is hinged at the opening of the storage chamber; characterized in that it also includes: Drive components; An ejection mechanism and a rotation mechanism driven by the drive assembly; The ejection mechanism is used to push the door body open to a preset angle; the rotation mechanism is used to make the door body continue to rotate after the ejection mechanism pushes the door body open, so as to open the storage chamber; The ejection mechanism comprises: A push rod is disposed in the mounting seat and is slidable between a retracted position and an extended position, wherein the sliding direction of the push rod is parallel to the thickness direction of the door body, and the push rod has a plurality of guide posts disposed along the extension direction thereof, wherein the guide posts are perpendicular to the push rod; The drive assembly includes a drive motor and a transmission mechanism provided on the output shaft of the drive motor, the transmission mechanism is engaged with a transmission gear, the transmission gear and the sheave are fixed on the same transmission shaft, the sheave is provided with a plurality of radial grooves, when the sheave rolls along the extension direction of the push rod, the plurality of radial grooves can be sequentially sleeved on the corresponding guide posts, and the guide posts are moved to drive the push rod to slide between the retracted position and the extended position; when the push rod is in the extended position, the guide post at the end is out of the radial groove; The distance between two adjacent radial grooves along the outer circumferential surface of the sheave is equal to the distance between two adjacent guide pillars; The ejection mechanism further comprises: a first limiting member, disposed in the mounting seat, for preventing the push rod from sliding out of the mounting seat when the push rod is in the extended position; a second limiting member, disposed in the mounting seat, for preventing the push rod from directly contacting the mounting seat when the push rod is in the retracted position; The first limiting member and the second limiting member are both limiting plates, and the ejection mechanism further includes: The third limiting member is arranged on the side of the push rod. When the push rod is in the extended position, the third limiting member contacts the first limiting member; when the push rod is in the retracted position, the third limiting member contacts the second limiting member; the third limiting member is an elastic member.

2. The refrigerator according to claim 1, wherein: The driving assembly includes a driving motor and a transmission gear arranged at an output end of the driving motor, and the transmission gear is drivingly connected to the grooved wheel.

3. The refrigerator according to claim 2, characterized in that The sheave and the transmission gear are an integral part.

4. The refrigerator according to claim 3, characterized in that A mounting cavity is provided on the top of the door body, and the mounting seat is located in the mounting cavity.

5. The refrigerator according to claim 4, characterized in that The rotating mechanism comprises: A second driven gear is transmission-connected to the driving motor; The hinge shaft of the door body is provided with meshing teeth arranged along its circumference and meshing with the second driven gear.

6. The refrigerator according to claim 5, characterized in that Also includes: A clutch is provided between the output end of the driving motor and the rotating mechanism.

7. The refrigerator according to claim 6, characterized in that Also includes: a first speed reduction mechanism, provided between the output of the drive motor and the clutch; The second speed reduction mechanism is arranged at the output end of the clutch and is transmission-connected to the rotating mechanism.

8. The refrigerator according to claim 7, characterized in that The first reduction mechanism comprises: a first mounting shaft connected to the output end of the drive motor; a first gear fixedly connected to the first mounting shaft; at least one second duplex gear sleeved on the first mounting shaft, the second duplex gear being rotatable relative to the first mounting shaft; two gears in the second duplex gear being of different sizes; a second mounting axis, arranged parallel to the first mounting axis; at least one first duplex gear mounted on the second mounting shaft, the first duplex gear being rotatable relative to the second mounting shaft; two gears in the first duplex gear being of different sizes; The first gear is meshed with the large gear of the first duplex gear, the small gear of the first duplex gear is meshed with the large gear of the second duplex gear; the small gear of the second duplex gear is meshed with the transmission gear, and the second duplex gear is fixedly connected to the input end of the clutch.

9. The refrigerator according to claim 8, characterized in that The second reduction mechanism is a reduction gear set.

10. The refrigerator according to claim 9, characterized in that The driving motor is arranged along the height direction of the door body, and the first mounting shaft is arranged along the width direction of the door body; The drive assembly further includes: a first steering mechanism, provided between the output end of the drive motor and the first mounting shaft, for converting the rotation of the output shaft of the drive motor around the height direction of the door body into the rotation of the first mounting shaft around the width direction of the door body; The second steering mechanism is provided between the output end of the clutch and the rotating mechanism, and is used for converting the rotation of the output shaft of the clutch around the width direction of the door body into the rotation of the rotating mechanism around the height direction of the door body.

11. The refrigerator according to claim 10, characterized in that The first steering mechanism comprises: a worm, arranged on the output shaft of the driving motor; A worm wheel is arranged at the input end of the first mounting shaft and meshes with the worm.

12. The refrigerator according to claim 11, characterized in that The second steering mechanism comprises: a first bevel gear, disposed on the output shaft of the clutch; a second bevel gear meshing with the first bevel gear, wherein a rotation axis of the second bevel gear is perpendicular to the rotation axis of the first bevel gear; A transmission shaft is arranged along the height direction of the door body, an input end of the transmission shaft is connected to the second bevel gear, and an output end of the transmission shaft is connected to the second reduction mechanism.

13. The refrigerator according to claim 12, wherein: Also includes: A potentiometer, wherein the rotating shaft of the potentiometer is in driving connection with the hinge shaft of the door body, and the output voltage value of the potentiometer changes accordingly with the change of the rotation angle of the hinge shaft; A control unit, the control unit being configured to: The operation of the driving component is controlled according to the output voltage value of the potentiometer. If the output voltage value of the potentiometer continues to change, the driving component continues to operate; if the output voltage value of the potentiometer does not change, the driving component stops operating.

14. The refrigerator according to claim 13, wherein: It also includes a potentiometer mounting gear, the resistor body of the potentiometer is fixed, and the rotating shaft of the potentiometer rotates with the mounting gear; The second reduction mechanism includes a first driven gear; the mounting gear is meshed with the first driven gear.

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