Opening mechanism of electric tilt-up door

Abstract

A door opening mechanism of an electric tilt-up door comprises a base fixed on a cabinet body and a connecting rod seat installed on a cabinet door, a first connecting rod and a second connecting rod are installed in the base in a hinged mode, the middle of the first connecting rod is hinged to the middle of a third connecting rod, and the tail of the third connecting rod is hinged to a fourth connecting rod. The other end of the fourth connecting rod is hinged with the connecting rod seat; the head of the third connecting rod is hinged to the second connecting rod, and the tail of the third connecting rod is hinged to the connecting rod seat; the screw rod is arranged in the base and is connected with a speed reducing motor, and the speed reducing motor drives the screw rod to rotate; a driving nut is in threaded connection with the screw and connected with the third connecting rod through a first pull arm, and when the driving nut moves linearly, the first pull arm drives the first connecting rod, the second connecting rod, the third connecting rod, the fourth connecting rod and the connecting rod base to move relative to hinge points of the connecting rods, so that opening and closing of the cabinet door are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to a household hardware fitting, in particular to an electric upturning door opening mechanism. BACKGROUND

[0002] The existing upturning door opening mechanism is widely used in cabinet bodies and cabinets to achieve the opening and closing of cabinet doors. However, in the traditional upturning door opening structure, the opening and closing is usually completed by manual operation of the user. Such structure has some significant disadvantages, as follows:

[0003] 1. Dependence on manual operation: The traditional upturning door opening mechanism adopts a pure mechanical structure, which must rely on the user's manual pulling or pushing to complete the opening and closing operation. Especially in the case of heavy cabinet doors or frequent use, manual operation is not only laborious but also inconvenient, which is not suitable for cabinet doors that need to be frequently used or have large volume.

[0004] 2. Limited and difficult to control opening angle: The existing upturning door structure usually achieves opening and support through fixed support rods or mechanical hinges, but lacks precise control of the opening angle. The user cannot conveniently adjust the opening angle of the door, which has the problems of excessive opening or insufficient angle, not only affecting the user experience, but also increasing the risk of cabinet door impact.

[0005] 3. Large driving force pressure on electric device: In the process of realizing electric transformation, the existing door opening mechanism is difficult to reduce the working pressure of the electric driving mechanism. When the driving force demand is high, the motor needs to provide a larger output, which leads to excessive load, increased energy consumption, shortened service life, and may produce noise or vibration, affecting the use effect.

[0006] 4. Lack of adaptability to different door body weights: In actual application, the weight of the cabinet door will vary according to the material and size, and the existing mechanism is difficult to flexibly adapt to different weights of cabinet doors. The structure lacks flexibility, which may not smoothly open when driving a heavy door body, and light weight door body may have unstable vibration phenomenon. Therefore, it is necessary to make further improvement. SUMMARY

[0007] The purpose of the present application is to overcome the shortcomings of the prior art, provide an electric upturning door opening mechanism with simple structure, convenient use, controllable opening angle of cabinet door, and adaptation to more weight cabinet doors.

[0008] The application aims at realizing the electric upturn door opening mechanism in the following way: a base fixed on the cabinet body, and a connecting rod base installed on the cabinet door, the first connecting rod and the second connecting rod are hingedly installed in the base, the middle part of the first connecting rod is hingedly connected with the middle part of the third connecting rod, the tail part of the third connecting rod is hingedly connected with the fourth connecting rod, and the other end of the fourth connecting rod is hingedly connected with the connecting rod base; the head part of the third connecting rod is hingedly connected with the second connecting rod, and the tail part of the third connecting rod is hingedly connected with the connecting rod base.

[0009] Further, a screw rod is arranged in the base, the screw rod is connected with a speed reduction motor, the speed reduction motor drives the screw rod to rotate; a driving nut is screwed on the screw rod, the driving nut is connected with the third connecting rod through the first pull arm, when the driving nut moves linearly, the first connecting rod, the second connecting rod, the third connecting rod, the fourth connecting rod and the connecting rod base are driven to move relative to the hinge joints through the first pull arm, so as to realize the opening and closing of the cabinet door.

[0010] Further, the driving nut is sleeved with a guide sleeve, and the base is provided with a guide groove, the guide sleeve is slidingly installed in the guide groove.

[0011] Further, the sidewall of the guide sleeve is provided with a first hinge shaft, and the first hinge shaft is hingedly connected with the first pull arm, the other end of the first pull arm is hingedly connected at the hinge joint of the second connecting rod and the third connecting rod.

[0012] Further, the base is further hingedly provided with a driving plate, the middle part of the second connecting rod is hingedly connected with the driving plate through the second pull arm; the base is further provided with a power assisting device, one end of the power assisting device is hingedly connected with the base, and the other end is hingedly connected with the driving plate, the thrust generated by the power assisting device is always applied to the driving plate to push the driving plate to swing.

[0013] Further, the power assisting device comprises a spring fixing tube and a spring telescopic tube, the spring telescopic tube is sleeved in the spring fixing tube, one end of the spring telescopic tube is hingedly connected with the driving plate through a spring support, the tail part of the spring fixing tube is connected with the base through a spring force adjusting device, a power assisting spring is sleeved on the cylindrical surface of the spring fixing tube and the spring telescopic tube, and the power assisting spring pushes the driving plate to swing through the spring support.

[0014] Further, the tail part of the spring fixing tube is provided with a spring base, one end of the power assisting spring is pressed on the spring base, and the spring base is provided with a supporting pin, the two ends of the supporting pin extend into adjusting grooves arranged in the base.

[0015] Further, the spring force adjusting device is a supporting column arranged in the base, the supporting column is provided with a first spring force adjusting screw hole, a first spring force adjusting bolt is screwed in the first spring force adjusting screw hole, the end part of the first spring force adjusting bolt is connected with the spring base, and rotating the first spring force adjusting bolt drives the spring base to move, so as to adjust the spring force of the power assisting spring.

[0016] Further, the driving plate is provided with an elastic guide groove, the spring support is slidingly installed in the elastic guide groove through an elastic guide column, and the driving plate is further provided with a second elastic force adjusting screw hole, a second elastic force adjusting bolt is screwed in the second elastic force adjusting screw hole, one end of the second elastic force adjusting bolt is connected with the spring support, and the second elastic force adjusting bolt is rotated to drive the elastic guide column to slide in the elastic guide groove.

[0017] Further, the base is further hingedly installed with an angle limiting plate, the angle limiting plate is rotatably installed with an angle adjusting bolt, the angle adjusting bolt is screwed with an angle adjusting nut arranged in the base, the angle adjusting bolt is rotated to drive the angle limiting plate to swing in the base, so that the angle limiting plate enters the movement track of the second connecting rod, and the maximum opening angle of the door opening mechanism is limited.

[0018] Further, the base is further installed with a door damper, and the door damper extends into the movement track of the first connecting rod, thereby playing a buffering role when the door opening mechanism is closed.

[0019] The application has the advantages of simple structure, low production cost and improved market competitiveness.

[0020] The application realizes the full-automatic opening and closing function of the upward turning door by integrating the electric driving device. The user can complete the opening and closing of the door body by pressing the control switch, without manually pulling the cabinet door, thereby greatly improving the convenience and intelligent level of use, and the application is especially suitable for the application scenarios of frequently opening and closing or heavy cabinet doors.

[0021] The application designs an angle limiting structure, which utilizes the angle limiting plate and the angle adjusting bolt and the like components to enable the user to flexibly adjust the maximum opening angle of the door body. This function not only improves the safety of the structure and avoids damage caused by excessive opening, but also improves the durability of the mechanism and ensures that the door opening mechanism can be individually adjusted according to different requirements.

[0022] The application provides an additional pushing force for the opening of the door body by arranging the power assisting device in the driving mechanism, thereby sharing the load of the electric driving system. By reducing the working pressure of the electric mechanism, the energy consumption and wear of the motor are reduced, and the service life of the electric driving system is improved.

[0023] 5. The application is equipped with a spring device with adjustable elastic force, which can adjust the elastic force according to the different weights of the door body. No matter the door body is light or heavy, the spring can provide appropriate auxiliary force to ensure that the door opening mechanism always runs smoothly and avoids imbalance caused by weight difference. This function makes the door opening mechanism applicable to cabinet doors of various materials and weights, thereby enhancing the applicability and flexibility of the product. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 Fig. 2 is a schematic view of the cabinet and the cabinet door assembly in an open state according to the present application.

[0025] Figure 2 Fig. 3 is a schematic view of the cabinet and the cabinet door assembly in a closed state according to the present application.

[0026] Figure 3 Fig. 4 is an assembly effect view of the structure according to the present application.

[0027] Figures 4-6 Fig. 5 is a schematic view of the structure behind the hidden shell according to the present application.

[0028] Figure 7 Fig. 6 is a schematic view of the structure in a closed state according to the present application.

[0029] Figure 8 Fig. 7 is an enlarged view of the A part structure in the present application. Figure 5

[0030] Figure 9 Fig. 8 is a schematic view of the power assisting device structure according to the present application.

[0031] Figure 10 Fig. 9 is a schematic view of the angle limiting plate structure according to the present application. DETAILED DESCRIPTION

[0032] The present application will be further described in detail below with reference to the accompanying drawings. An electrically operated upturning door opening mechanism comprises a base 6 fixed on a cabinet body, and a connecting rod seat 5 installed on a cabinet door. The base 6 is hingedly installed with a first connecting rod 1 and a second connecting rod 2. The middle part of the first connecting rod 1 is hingedly connected with the middle part of a third connecting rod 3. The tail part of the third connecting rod 3 is hingedly connected with a fourth connecting rod 4. The other end of the fourth connecting rod 4 is hingedly connected with the connecting rod seat 5. The head part of the third connecting rod 3 is hingedly connected with the second connecting rod 2. The tail part of the third connecting rod 3 is hingedly connected with the connecting rod seat 5.

[0033] A screw rod 7 is arranged in the base 6. The screw rod 7 is connected with a speed reducing motor 71. The speed reducing motor 71 drives the screw rod 7 to rotate. A driving nut 72 is screwed on the screw rod 7. The driving nut 72 is connected with the third connecting rod 3 through a first pull arm 73. When the driving nut 72 moves linearly, the first connecting rod 1, the second connecting rod 2, the third connecting rod 3, the fourth connecting rod 4 and the connecting rod seat 5 are driven to move relative to their hinged points through the first pull arm 73, thereby realizing the opening and closing of the cabinet door.

[0034] In one embodiment, the driving nut 72 is sleeved with a guide sleeve 74. Correspondingly, a guide groove is arranged in the base 6. The guide sleeve 74 is slidingly installed in the guide groove.

[0035] ​In one of the embodiments: the side wall of the guide sleeve 74 is provided with a first hinge shaft 75 hinged with the first pull arm 73, and the other end of the first pull arm 73 is hinged at the hinge between the second connecting rod 2 and the third connecting rod 3.

[0036] In one of the embodiments: the base 6 is further hingedly provided with a driving plate 8, and the driving plate 8 is hingedly connected with the middle part of the second connecting rod 2 through a second pull arm 81; the base 6 is further provided with a power assisting device 9, one end of which is hingedly connected with the base 6, and the other end is hingedly connected with the driving plate 8, and the thrust generated by the power assisting device 9 is always applied to the driving plate 8 to push the driving plate 8 to swing.

[0037] In one of the embodiments: the power assisting device 9 comprises a spring fixing tube 91 and a spring telescopic tube 92, the spring telescopic tube 92 is sleeved in the spring fixing tube 91, one end of the spring telescopic tube 92 is hingedly connected with the driving plate 8 through a spring support 93, the tail of the spring fixing tube 91 is connected with the base 6 through a spring force adjusting device, a power assisting spring 94 is sleeved on the cylindrical surface of the spring fixing tube 91 and the spring telescopic tube 92, and the power assisting spring 94 pushes the driving plate 8 to swing through the spring support 93.

[0038] In one of the embodiments: the tail of the spring fixing tube 91 is provided with a spring base 95, one end of the power assisting spring 94 is pressed on the spring base 95, and the spring base 95 is provided with a supporting pin 96, both ends of the supporting pin 96 extend into the adjusting groove 97 provided in the base 6.

[0039] In one of the embodiments: the spring force adjusting device is a supporting column 61 provided in the base 6, the supporting column 61 is provided with a first spring force adjusting screw hole 62, a first spring force adjusting bolt 63 is screwed in the first spring force adjusting screw hole 62, and the end of the first spring force adjusting bolt 63 is connected with the spring base 95, and rotating the first spring force adjusting bolt 63 drives the spring base 95 to move, so as to adjust the spring force of the power assisting spring 94.

[0040] In one of the embodiments: the driving plate 8 is provided with a spring force guide groove 82, the spring support 93 is slidingly installed in the spring force guide groove 82 through a spring force guide column 83, and the driving plate 8 is further provided with a second spring force adjusting screw hole 84, a second spring force adjusting bolt 85 is screwed in the second spring force adjusting screw hole 84, and the other end of the second spring force adjusting bolt 85 is connected with the spring support 93, and rotating the second spring force adjusting bolt 85 drives the spring force guide column 83 to slide in the spring force guide groove 82.

[0041] In one of the embodiments: the base 6 is also hingedly installed with an angle limiting plate 64, the angle limiting plate 64 is rotatably installed with an angle adjusting bolt 65, the angle adjusting bolt 65 is screwed with an angle adjusting nut 66 arranged in the base 6, rotating the angle adjusting bolt 65 drives the angle limiting plate 64 to swing in the base 6, so that the angle limiting plate 64 enters the movement track of the second connecting rod 2, limiting the maximum opening angle of the door opening mechanism.

[0042] In one of the embodiments: the base 6 is also installed with a door damper 67, the door damper 67 extends into the movement track of the first connecting rod 1, and plays a buffering role when the door opening mechanism is closed.

[0043] Working principle: in the application, the screw rod 7 is driven to rotate by the speed reducer motor 71, so as to drive the driving nut 72 screwed on the screw rod to move linearly along the screw rod. When the speed reducer motor receives an opening or closing instruction, the screw rod starts to rotate, and the driving nut moves along the screw rod according to the rotating direction. The driving nut 72 is connected with the third connecting rod 3 through the first pull arm 73. With the movement of the driving nut, the first pull arm 73 is pulled or pushed, thereby driving the third connecting rod 3 to move. The movement of the third connecting rod drives the first connecting rod 1, the second connecting rod 2, the fourth connecting rod 4 and the connecting rod base 5 to move relative to their hinge points, so as to realize the upturn opening or closing of the door body. The coordinated action of the connecting rods can stably transmit power, so that the door body can be smoothly upturned or lowered. Through the electric driving mode, the operation of manually pulling the cabinet door is avoided, and the convenience and intelligent degree are greatly improved. In addition, since the cabinet door does not need to be manually driven to open and close, the product is particularly suitable for some relatively high cabinet bodies.

[0044] Further, the application is provided with the angle limiting plate 64 in the base 6, and the position of the angle limiting plate is controlled through the angle adjusting bolt 65. By rotating the angle adjusting bolt 65, the angle limiting plate can be adjusted to enter or exit the movement track of the second connecting rod 2. When the cabinet door is opened to a certain angle, the angle limiting plate blocks the continuous movement of the second connecting rod, thereby limiting the maximum opening angle of the upturned door. This design enables the user to accurately control the maximum opening range of the cabinet door according to actual needs, improves the safety of use, and avoids damage caused by excessive opening of the door body.

[0045] Further, the base 6 is provided with a booster device 9, which is composed of a spring fixing tube 91 and a spring telescopic tube 92, and is internally provided with a booster spring 94. One end of the booster device is hinged to the base 6, and the other end is hinged to the driving plate 8. During the opening or closing of the cabinet door, the booster device continuously applies a pushing force to the driving plate 8 through the elastic force generated by the spring. For example, during the opening of the door, when the cabinet door is opened to a set angle, the angle of the swinging of the driving plate is greater than the dead point position, and the pushing force generated by the spring pushes the cabinet door to open. When the cabinet door is closed to a set angle, the angle of the swinging of the driving plate is less than the dead point position, and the pushing force generated by the spring pushes the cabinet door to close. Due to the arrangement of the booster device, the working load of the reduction motor and the screw rod is reduced, the efficiency of the motor is significantly improved, the service life of the motor is prolonged, and the energy consumption is reduced.

[0046] It should be particularly noted that the spring fixing tube 91 of the booster device is provided with an elastic force adjusting device, and the user can adjust the elastic force of the booster spring by adjusting the elastic force adjusting bolt, so as to adapt to the requirements of doors of different weights.

[0047] As shown in Figure 9 , the second elastic force adjusting bolt 85 at the other end is connected with the spring support 93, and the second elastic force adjusting bolt 85 is rotated to drive the elastic force guide column 83 to slide in the elastic force guide groove 82. By changing the force point of the booster spring 94 on the driving plate 8, the length of the force arm of the booster is changed, and the size of the booster can also be adjusted. Therefore, no matter whether the door body is light or heavy, by reasonably adjusting the elastic force of the booster spring or the length of the booster lever, the door body can be kept stable during opening or closing, the vibration or instability during operation is avoided, and the overall adaptability and reliability are improved.

[0048] In summary, compared with the traditional technology, the electric driving device is adopted in the present application, the tedious manual operation is avoided, the opening and closing of the cabinet door can be completed through the electric button or remote control, and the present application is especially suitable for large or heavy cabinet doors, and the use experience of the user is greatly improved.

[0049] Meanwhile, through the combination of the angle limiting plate and the angle adjusting bolt, the present application realizes the flexible control of the opening angle of the upward opening door. The user can adjust the maximum opening angle according to the requirements of the use environment, effectively avoids excessive opening, and improves the safety and durability of the door opening mechanism.

[0050] In addition, through the arrangement of the booster device, part of the driving force is provided by the spring, the working load of the electric driving device is effectively reduced, the wear of the motor is reduced, the service life of the electric device is prolonged, the energy consumption of the system is reduced, and the overall working efficiency is improved.

[0051] Moreover, the spring force of the assisting device can be adjusted to adapt to door bodies of different weights, so that the door opening mechanism has high adaptability, and can keep stable opening and closing whether the door body is light or heavy, avoiding inconvenience caused by weight difference of the door body. This design makes the mechanism have a wider application scene and meet different use requirements.

[0052] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. An electrically powered overhead door opening mechanism characterized by: It includes the base (6) fixed on the cabinet body, and the connecting rod seat (5) installed on the cabinet door, the first connecting rod (1) and the second connecting rod (2) are hingedly installed in the base (6), the middle part of the first connecting rod (1) is hingedly connected with the middle part of the third connecting rod (3), the tail part of the third connecting rod (3) is hingedly connected with the fourth connecting rod (4), and the other end of the fourth connecting rod (4) is hingedly connected with the connecting rod seat (5); the head part of the third connecting rod (3) is hingedly connected with the second connecting rod (2), and the tail part of the third connecting rod (3) is hingedly connected with the connecting rod seat (5); It also includes the screw rod (7) arranged in the base (6), the screw rod (7) is connected with the speed reducer motor (71), the speed reducer motor (71) drives the screw rod (7) to rotate; the driving nut (72) is screwed on the screw rod (7), the driving nut (72) is connected with the third connecting rod (3) through the first pull arm (73), when the driving nut (72) moves linearly, the first connecting rod (1), the second connecting rod (2), the third connecting rod (3), the fourth connecting rod (4) and the connecting rod seat (5) are driven to move relative to the hinge points thereof through the first pull arm (73), so that the cabinet door is opened and closed.

2. A motorized overhead door opening mechanism according to claim 1, wherein: The driving nut (72) is sleeved with the guide sleeve (74), and correspondingly, the base (6) is provided with a guide groove, and the guide sleeve (74) is slidingly installed in the guide groove.

3. An electrically operated overhead door opening mechanism as claimed in claim 2 wherein: The sidewall of the guide sleeve (74) is provided with the first hinge shaft (75) hingedly connected with the first pull arm (73), and the other end of the first pull arm (73) is hingedly connected at the hinge connection between the second connecting rod (2) and the third connecting rod (3).

4. The electrically operated overhead door opening mechanism according to claim 1, wherein: The base (6) is also hingedly provided with the driving plate (8), and the middle part of the second connecting rod (2) is hingedly connected with the driving plate (8) through the second pull arm (81); the base (6) is also provided with the power assisting device (9), one end of the power assisting device (9) is hingedly connected with the base (6), the other end is hingedly connected with the driving plate (8), the thrust generated by the power assisting device (9) is always applied to the driving plate (8), and the driving plate (8) is pushed to swing.

5. An electrically operated overhead door opening mechanism as claimed in claim 4 wherein: The power assisting device (9) includes the spring fixing pipe (91) and the spring telescopic pipe (92), the spring telescopic pipe (92) is sleeved in the spring fixing pipe (91), one end of the spring telescopic pipe (92) is hingedly connected with the driving plate (8) through the spring support (93), the tail part of the spring fixing pipe (91) is connected with the base (6) through the elastic force adjusting device, the power assisting spring (94) is sleeved on the cylindrical surface of the spring fixing pipe (91) and the spring telescopic pipe (92), and the power assisting spring (94) drives the driving plate (8) to swing through the spring support (93).

6. An electrically operated overhead door opening mechanism as claimed in claim 5 wherein: The tail part of the spring fixing pipe (91) is provided with the spring base (95), one end of the power assisting spring (94) is pressed on the spring base (95), the spring base (95) is provided with the supporting pin (96), and the two ends of the supporting pin (96) extend into the adjusting groove (97) arranged in the base (6).

7. An electrically operated overhead door opening mechanism as claimed in claim 5 wherein: The elastic force adjusting device is a supporting column (61) arranged in the base (6), the supporting column (61) is provided with a first elastic force adjusting screw hole (62), the first elastic force adjusting screw hole (62) is screwed with a first elastic force adjusting bolt (63), the end of the first elastic force adjusting bolt (63) is connected with a spring base (95), and the spring base (95) is driven to move by rotating the first elastic force adjusting bolt (63), so that the elastic force of the assisting spring (94) is adjusted.

8. An electrically operated overhead door opening mechanism as claimed in claim 5 wherein: The driving plate (8) is provided with an elastic force guide groove (82), the spring support (93) is slidingly arranged in the elastic force guide groove (82) through an elastic force guide column (83), the driving plate (8) is further provided with a second elastic force adjusting screw hole (84), the second elastic force adjusting screw hole (84) is screwed with a second elastic force adjusting bolt (85), the other end of the second elastic force adjusting bolt (85) is connected with the spring support (93), and the elastic force guide column (83) is driven to slide in the elastic force guide groove (82) by rotating the second elastic force adjusting bolt (85).

9. An electrically operated overhead door opening mechanism as claimed in claim 1 wherein: The base (6) is further hingedly provided with an angle limiting plate (64), the angle limiting plate (64) is rotatably provided with an angle adjusting bolt (65), the angle adjusting bolt (65) is screwed with an angle adjusting nut (66) arranged in the base (6), the angle limiting plate (64) is driven to swing in the base (6) by rotating the angle adjusting bolt (65), so that the angle limiting plate (64) enters the movement track of the second connecting rod (2), and the maximum opening angle of the door opening mechanism is limited.

10. An electrically operated overhead door opening mechanism as claimed in claim 1 wherein: The base (6) is further provided with a door damper (67), the door damper (67) extends into the movement track of the first connecting rod (1), and plays a buffering role when the door opening mechanism is closed.

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