Door opening and closing actuator unlimited to refrigerator door shaft hinge

Abstract

The utility model provides a door opening and closing actuator not limited to a refrigerator door shaft hinge, which comprises a box body, one side of the box body is opened, a door body is hinged to the box body, the box body is connected with an actuating device, and the actuating device drives the door body to be opened and closed. The executing device comprises a driving mechanism and a swing arm, the driving mechanism is connected to the top of the box body, one end of the swing arm is connected to the door body, the driving mechanism is in driving connection with the swing arm, the driving mechanism drives the swing arm to stretch out and draw back, and meanwhile the swing arm rotates around the driving mechanism. The utility model is used for opening and closing the box door, has the advantages of less integral parts, less motor output power loss, low manufacturing cost, low failure rate, direct drive connection to the door body or the hinge, suitability for various hinges and high applicability.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of actuator, concretely relates to a door opening and closing actuator without refrigerator door shaft hinge. BACKGROUND

[0002] With the continuous development and progress of society, the improvement of living standards. The types of box body are also more and more, there is independent box body, embedded box body. Embedded box body is divided into free embedding, zero embedding, super-thin embedding, zero distance flat embedding, etc., more and more high-end, more and more popular among the public, the door body of embedded box body can normally open and close in narrow space, and the hinge is specially designed, so that the traditional automatic door opening and closing actuator is difficult to be applied to the embedded box body. And the output end of the traditional actuator uses a connecting rod mechanism, which has the problems of complex structure, many parts and high failure rate.

[0003] Therefore, the above problems need to be solved. UTILITY MODEL CONTENTS

[0004] The utility model discloses a door opening and closing actuator without refrigerator door shaft hinge, which is not limited by the door shaft hinge, has compact structure, large output power, low manufacturing cost and low failure rate.

[0005] Technical scheme: in order to realize the above object, the utility model provides a door opening and closing actuator without refrigerator door shaft hinge, which comprises a box body, the box body is provided with an opening on one side, the box body is hingedly connected with a door body, and the box body is connected with an execution device; the execution device drives the door body to open and close. The execution device comprises a driving mechanism and a swing arm; the driving mechanism is connected to the top of the box body; one end of the swing arm is connected to the door body; the driving mechanism and the swing arm are drivingly connected; the driving mechanism drives the swing arm to stretch out and retract; and the swing arm rotates around the driving mechanism. When the door body is opened or closed, the driving mechanism drives the swing arm to stretch out and retract; the swing arm pushes the door body to rotate around the hinge; one end of the swing arm and the door body moves along an arc line with the door body; and the swing arm rotates around the driving mechanism to open or close the door body. The utility model is used for opening and closing the door of the box body, has few overall parts, compact structure, low motor output power loss, low manufacturing cost, low failure rate, direct driving connection with the door body, and no requirement for the hinge.

[0006] Further, in the door opening and closing actuator without refrigerator door shaft hinge, the driving mechanism comprises a shell, the shell is a hollow shell, a motor is connected in the shell, the motor is drivingly connected with a gear set, the gear set is connected in the shell, and the gear set and the swing arm are drivingly connected. During the opening or closing of the door body, the motor rotates; the motor drives the swing arm to move through the gear set; the door body is opened or closed; the door body is opened or closed through the control of the motor; the stability is high; the control system can accurately and stably open or close the door body; and the failure is reduced.

[0007] Furthermore, in the aforementioned door actuator, which is not limited to refrigerator door hinges, the swing arm is configured as an elongated strip with a through slot along the swing arm. A rack is fixedly connected to the top surface of the swing arm, and the rack is disposed along the through slot. The output gear of the gear set passes through the through slot and meshes with the rack. Rotation of the output gear of the gear set drives the rack, which in turn drives the swing arm. Simultaneously, because the output gear of the gear set passes through the through slot, the swing arm can move along the output gear of the gear set and simultaneously rotate around the output gear of the gear set. In other words, the swing arm can open or close the door, and the swing arm can also rotate around the output gear of the gear set according to the angle of the door opening or closing. This simple structure, minimal output torque loss, and a low failure rate are all advantages.

[0008] Furthermore, in the above-mentioned door opening and closing actuator not limited to the refrigerator door shaft hinge, the motor shaft of the motor is connected to a worm, the gear set includes a worm wheel and a planetary gear mechanism, and the worm wheel and the worm are driven and connected. The worm wheel and the planetary gear mechanism are driven and connected through an idler gear, and the planetary gear mechanism is driven and connected to the rack. The worm wheel, worm and planetary gear mechanism give the gear set a larger transmission ratio, amplifying the output torque of the motor, and the worm wheel and worm have self-locking characteristics. When the door body is opened to a certain angle, the self-locking characteristics of the worm wheel and worm can prevent the door body from moving due to its own weight, improving the user experience, and when the door body is closed, it can also avoid some unnecessary opening of the door body.

[0009] Furthermore, in the aforementioned door opening and closing actuator, which is not limited to refrigerator door shaft hinges, the planetary gear mechanism includes an inner ring gear and an outer ring gear. The outer ring gear is provided with external teeth and a base plate. A first gear is connected to the center of the base plate of the outer ring gear. The outer ring gear and the first gear rotate synchronously and mesh with the idler gear. The inner ring gear is connected to the inner side of the outer ring gear and is fixedly connected to the top of the housing. The inner ring gear is provided with internal teeth and meshes with a planetary gear. The planetary gear meshes with the first gear. The planetary gear is connected to a drive shaft. The drive shaft is connected to a second gear at the end away from the planetary gear. The second gear serves as the output gear of the gear set. The second gear meshes with the rack. During the door opening and closing process, the motor drives the worm gear, which drives the outer ring gear through the idler gear. The first gear connected to the outer ring gear rotates synchronously. The first gear drives the planetary gear, which rotates between the inner ring gear and the first gear. The planetary gear drives the drive shaft, which in turn drives the second gear, which in turn drives the rack along the second gear. The planetary gear mechanism has a compact structure, a large transmission ratio, a strong load-bearing capacity, and a smooth operation. It amplifies the motor output torque and improves the driving ability of the actuator.

[0010] Further, the door opening and closing actuator not limited to the refrigerator door shaft hinge described above, the planet gears are provided with three or more, and the planet gears are arranged around the first gear array. The planet gears are provided with three or more, and rotate between the inner ring gear and the first gear, so that the planet gears are evenly stressed during operation, the stability of the planet gear mechanism is improved, the smooth operation of the planet gears is ensured, and the failure rate is reduced.

[0011] Further, the door opening and closing actuator not limited to the refrigerator door shaft hinge described above, the transmission shaft is connected with a synchronous wheel, the synchronous wheel is coaxially connected with the transmission shaft, the synchronous wheel is connected with an angle wheel in meshing connection, an angle sensor is connected in the housing, the angle wheel is connected with the angle sensor, the connecting shaft of the angle wheel and the angle sensor is provided with a notch, and the angle sensor detects the rotation angle of the angle wheel. The angle sensor sends the detected angle signal to the control system, the control system controls the start and stop of the driving mechanism to control the opening or closing of the door body, prevents damage caused by over-opening or over-closing of the door body, and automatically controls the opening angle of the door body according to the received angle signal to realize the automation of opening or closing the door.

[0012] Further, the door opening and closing actuator not limited to the refrigerator door shaft hinge described above, the worm gear is coaxially connected with an electromagnetic clutch mechanism, the electromagnetic clutch mechanism magnetically attracts the worm gear to separate the worm gear and the worm. When it is necessary to automatically open the door body, the electromagnetic clutch mechanism is not started, the worm gear is lowered under the action of its own gravity, the worm gear and the worm are engaged, and the motor can drive the door body to open or close. When it is necessary to manually open or close the door body, the control system starts the electromagnetic clutch mechanism, the electromagnetic clutch mechanism magnetically attracts the worm gear, the worm gear and the worm are separated, and the door body can be manually opened or closed at this time.

[0013] Further, the door opening and closing actuator not limited to the refrigerator door shaft hinge described above, the top of the box body is provided with a groove, and the driving mechanism is connected in the groove. The driving mechanism is arranged in the groove, which can improve the appearance of the box body.

[0014] Further, the door opening and closing actuator not limited to the refrigerator door shaft hinge described above, the box body and the door body are hinged through a hinge mechanism, the hinge mechanism includes a fixed seat and a movable part, the fixed seat and the movable part are hinged, the fixed seat is connected with the box body, and the movable part is connected with the door body. The end of the swing arm away from the box body is connected with the movable part. The embedded box body needs special hinge design, the movement track of the special hinge movable part is a special curve, the traditional actuator usually has a straight line or arc type movement track, which cannot meet the needs of the embedded box body. The swing arm is connected with the movable part of the hinge mechanism, the swing arm rotates during movement following the movement of the movable part, the needs of the special movement curve are met, the opening and closing of the door body are realized, and the applicability of the actuator is improved.

[0015] The technical scheme has the following beneficial effects: the door opening and closing actuator of the utility model is not limited by the refrigerator door shaft hinge, has compact structure, large output power, low manufacturing cost and low failure rate, is directly connected with the door body driving or connected with the hinge movable part driving, the swing arm can rotate and move with the movable part, meets the special motion curve requirement, is not limited by the hinge, and is suitable for high application. The electromagnetic clutch mechanism magnetically attracts the worm gear, separates the worm gear and the worm, and realizes manual opening and closing of the door body. The self-locking characteristics of the worm gear and the worm can prevent the door body from moving due to its own weight, improve the use experience, and when the door body is closed, unnecessary opening of the door body can also be avoided. The planetary gear mechanism is used to amplify the motor output torque, improve the driving capacity of the actuator, and the planetary gear mechanism has compact structure, large transmission ratio and strong carrying capacity, stable operation, and low failure rate of the actuator. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the door opening and closing actuator of the utility model not limited by the refrigerator door shaft hinge.

[0017] Figure 2 It is a structure schematic view of the actuator.

[0018] Figure 3 It is an internal schematic view of the driving mechanism.

[0019] Figure 4 It is a structure schematic view of the swing arm.

[0020] Figure 5 It is Figure 3 An explosion schematic view.

[0021] Figure 6 It is Figure 1 A local enlarged view.

[0022] In the figure: 1, box body, 11, groove, 2, door body, 3, driving mechanism, 31, shell, 32, motor, 33, gear set, 331, worm gear, 332, planetary gear mechanism, 3321, inner ring gear, 3322, outer ring gear, 3323, first gear, 3324, planetary gear, 3325, transmission shaft, 3326, second gear, 3327, synchronous wheel, 3328, angle wheel, 3329, angle sensor, 333, idler gear, 334, electromagnetic clutch mechanism, 34, worm, 4, swing arm 41, through slot, 42, rack, 5, hinge mechanism, 51, fixed seat, 52, movable part. DETAILED DESCRIPTION

[0023] Example 1

[0024] As Figures 1-2The illustrated embodiment of a refrigerator door actuator, not limited to a refrigerator door hinge, comprises a housing 1 with an opening on one side. A door 2 is hingedly connected to the housing 1, and an actuator is connected to the housing 1. The actuator drives the door 2 to open and close. The actuator includes a drive mechanism 3 and a swing arm 4. The drive mechanism 3 is connected to the top of the housing 1, and one end of the swing arm 4 is connected to the door 2. The drive mechanism 3 and the swing arm 4 are in driving connection, and the drive mechanism 3 drives the swing arm 4 to extend and retract, while the swing arm 4 rotates around the drive mechanism 3. A groove 11 is provided at the top of the housing 1, and the drive mechanism 3 is connected to the groove 11.

[0025] like Figure 3 The door opening and closing actuator shown is not limited to the refrigerator door shaft hinge, and the driving mechanism 3 includes a shell 31, which is a hollow shell. A motor 32 is connected to the shell 31, and the motor 32 is driven by a gear set 33. The gear set 33 is connected to the shell 31, and the gear set 33 is driven by the swing arm 4.

[0026] like Figure 4 The door opening and closing actuator shown is not limited to the refrigerator door shaft hinge, and the swing arm 4 is set to a long strip shape, and a through groove 41 is provided along the swing arm 4. A rack 42 is fixedly connected to the top surface of the swing arm 4, and the rack 42 is set along the through groove 41. The output gear of the gear set 33 passes through the through groove 41 and engages with the rack 42.

[0027] like Figure 5 The illustrated door actuator, which is not limited to refrigerator door hinges, has a motor shaft connected to a worm 34. A gear set 33 includes a worm gear 331 and a planetary gear mechanism 332. The worm gear 331 and the planetary gear mechanism 332 are drivingly connected. The worm gear 331 and the planetary gear mechanism 332 are drivingly connected via an idler gear 333. The planetary gear mechanism 332 is drivingly connected to the rack 42. The worm gear 331, worm 34, and planetary gear mechanism 332 provide a large transmission ratio for the gear set 33, amplifying the output torque of the motor 32. Furthermore, the worm gear 331 and the worm 34 have self-locking properties.

[0028] The planetary gear mechanism 332 comprises an inner ring gear 3321 and an outer ring gear 3322, the outer ring gear 3322 is provided with external teeth, the outer ring gear 3322 is provided with a bottom plate, the center of the bottom plate of the outer ring gear 3322 is connected with a first gear 3323, the outer ring gear 3322 and the first gear 3323 rotate synchronously, and the outer ring gear 3322 is meshed with an idler gear 333. The inner ring gear 3321 is connected to the inner side of the outer ring gear 3322, the inner ring gear 3321 is fixedly connected to the top of the shell 31, the inner ring gear 3321 is provided with internal teeth, the inner ring gear 3321 is meshed with a planetary gear 3324, the planetary gear 3324 is meshed with the first gear 3323, the planetary gear 3324 is connected with a transmission shaft 3325, one end of the transmission shaft 3325 away from the planetary gear 3324 is connected with a second gear 3326, and the second gear 3326 is an output gear of the gear set 33. The second gear 3326 is meshed with the rack 42. The planetary gear 3324 is provided with three or more than three, and the planetary gears 3324 are arranged around the first gear 3323. The transmission shaft 3325 is connected with a synchronous wheel 3327, the synchronous wheel 3327 is coaxially connected with the transmission shaft 3325, the synchronous wheel 3327 is meshed with an angle wheel 3328, an angle sensor 3329 is connected in the shell 31, the angle wheel 3328 is connected with the angle sensor 3329, the connecting shaft connected between the angle wheel 3328 and the angle sensor 3329 is provided with a notch, and the angle sensor 3329 detects the rotation angle of the angle wheel 3328. The worm gear 331 is coaxially connected with an electromagnetic clutch mechanism 334, the electromagnetic clutch mechanism 334 magnetically attracts the worm gear 331, so that the worm gear 331 and the worm 34 are separated.

[0029] When the door 2 needs to be opened automatically, the electromagnetic clutch mechanism 334 is deactivated, the worm gear 331 descends due to its own gravity, and the worm gear 331 engages with the worm 34. The motor 32 is started, which drives the worm gear 331 to rotate. The worm gear 331 drives the outer ring gear 3322 to rotate via the idler gear 333. The first gear 3323 connected to the outer ring gear 3322 rotates synchronously. The first gear 3323 drives the planetary gear 3324 to rotate between the inner ring gear 3321 and the first gear 3323. The planetary gear 3324 drives the transmission shaft 3325 to rotate. The transmission shaft 3325 drives the second gear 3326 to rotate, which in turn drives the rack 42 to move along the second gear 3326. The swing arm 4 extends, pushing the door 2 to rotate about the hinge. The end of the swing arm 4 connected to the door 2 moves in an arc along with the door 2. At the same time, the swing arm 4 rotates around the second gear 3326, opening or closing the door 2. Angle sensor 3329 detects the rotational angle of the shaft connected to angle wheel 3328 and transmits the detected angle signal to the control system, which in turn controls the operation of motor 32 and the opening angle of door 2. Accordingly, when door 2 needs to be automatically closed, motor 32 reverses, closing door 2 via swing arm 4. When door 2 needs to be opened or closed manually, electromagnetic clutch mechanism 334 magnetically engages worm gear 331, separating worm gear 331 and worm 34, allowing manual opening or closing of door 2.

[0030] Example 2

[0031] The difference between this embodiment and embodiment 1 is that Figure 6 As shown, the housing 1 and door 2 are hingedly connected by a hinge mechanism 5, which includes a fixed base 51 and a movable portion 52. The fixed base 51 and movable portion 52 are hingedly connected, with the fixed base 51 connected to the housing 1 and the movable portion 52 connected to the door 2. A swing arm 4 is axially connected to the movable portion 52 at one end away from the housing 1. The swing arm 4 is connected to the movable portion 52 of the hinge mechanism 5, and the swing arm 4 drives the movable portion 5 to move. The swing arm 4 rotates in response to the movement of the movable portion 5 during the ejection process.

[0032] The above embodiments are illustrative and intended to illustrate the technical concepts and features of the present invention so that those skilled in the art can understand the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A door opening and closing actuator not limited to refrigerator door hinges, characterized by: The invention comprises a box body (1), one side of the box body (1) is open, the box body (1) is hinged with a door body (2), the box body (1) is connected with an actuator, and the actuator drives the door body (2) to open and close; the actuator comprises a driving mechanism (3) and a swing arm (4), the driving mechanism (3) is connected to the top of the box body (1), one end of the swing arm (4) is connected to the door body (2), the driving mechanism (3) and the swing arm (4) are connected in a driving manner, the driving mechanism (3) drives the swing arm (4) to extend and retract, and at the same time, the swing arm (4) rotates around the driving mechanism (3).

2. The door opening and closing actuator according to claim 1, which is not limited to refrigerator door hinges, is characterized in that: The driving mechanism (3) comprises a housing (31), the housing (31) being a hollow housing, a motor (32) being connected inside the housing (31), a gear set (33) being drivingly connected to the motor (32), the gear set (33) being connected inside the housing (31), and the gear set (33) being drivingly connected to the swing arm (4).

3. The door opening and closing actuator according to claim 2, which is not limited to refrigerator door hinges, is characterized in that: The swing arm (4) is configured as a long strip, a through slot (41) is provided along the swing arm (4), a rack (42) is fixedly connected to the top surface of the swing arm (4), the rack (42) is provided along the through slot (41), and the output gear of the gear set (33) passes through the through slot (41) and meshes with the rack (42).

4. The door opening and closing actuator according to claim 3, which is not limited to refrigerator door hinges, is characterized in that: The motor shaft of the motor (32) is connected to a worm (34); the gear set (33) includes a worm wheel (331) and a planetary gear mechanism (332); the worm wheel (331) and the worm (34) are drivingly connected; the worm wheel (331) and the planetary gear mechanism (332) are drivingly connected via an idler wheel (333); and the planetary gear mechanism (332) and the rack (42) are drivingly connected.

5. The door opening and closing actuator according to claim 4, which is not limited to refrigerator door hinges, is characterized in that: The planetary gear mechanism (332) includes an inner ring gear (3321) and an outer ring gear (3322), wherein the outer ring gear (3322) is provided with external teeth and a bottom plate, and the center of the bottom plate of the outer ring gear (3322) is connected to a first gear (3323), and the outer ring gear (3322) and the first gear (3323) rotate synchronously, and the outer ring gear (3322) and the idler gear (333) are meshed; the inner ring gear (3321) is connected to the inner side of the outer ring gear (3322), and the inner ring gear (3321) is fixed to the inner side of the outer ring gear (3322). The inner ring gear (3321) is fixedly connected to the top of the housing (31), and is provided with internal teeth. The inner ring gear (3321) is meshed with a planetary gear (3324), and the planetary gear (3324) is meshed with a first gear (3323). The planetary gear (3324) is connected to a transmission shaft (3325), and the transmission shaft (3325) is connected to a second gear (3326) at one end away from the planetary gear (3324). The second gear (3326) is the output gear of the gear set (33), and the second gear (3326) is meshed with the rack (42).

6. The door opening and closing actuator according to claim 5, which is not limited to refrigerator door hinges, is characterized in that: There are three or more planetary gears (3324), and the planetary gears (3324) are arranged in an array around the first gear (3323).

7. The door opening and closing actuator according to claim 5, which is not limited to refrigerator door hinges, is characterized in that: The transmission shaft (3325) is connected to a synchronous wheel (3327), the synchronous wheel (3327) and the transmission shaft (3325) are coaxially connected, the synchronous wheel (3327) is meshingly connected to an angle wheel (3328), an angle sensor (3329) is connected inside the housing (31), the angle wheel (3328) is axially connected to the angle sensor (3329), a connecting shaft connecting the angle wheel (3328) and the angle sensor (3329) is provided with a notch, and the angle sensor (3329) detects the rotation angle of the angle wheel (3328).

8. The door opening and closing actuator according to claim 4, regardless of the refrigerator door hinge, is characterized in that: The worm wheel (331) is coaxially connected to an electromagnetic clutch mechanism (334), and the electromagnetic clutch mechanism (334) magnetically attracts the worm wheel (331), thereby separating the worm wheel (331) and the worm (34).

9. The door opening and closing actuator according to claim 1, which is not limited to refrigerator door hinges, is characterized in that: A groove (11) is provided on the top of the box body (1), and the driving mechanism (3) is connected in the groove (11).

10. The door opening and closing actuator according to claim 1, which is not limited to refrigerator door hinges, is characterized in that: The box body (1) and the door body (2) are hingedly connected via a hinge mechanism (5), wherein the hinge mechanism (5) comprises a fixed seat (51) and a movable portion (52), wherein the fixed seat (51) and the movable portion (52) are hingedly connected, wherein the fixed seat (51) is connected to the box body (1), and the movable portion (52) is connected to the door body (2); and the end of the swing arm (4) away from the box body (1) is axially connected to the movable portion (52).

Images