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 invention relates to a household hardware accessory, in particular to an electric flip-up door opening mechanism. Background Art

[0002] Existing flip-up door opening mechanisms are widely used in cabinets and cupboards to open and close the cabinet doors. However, in the traditional flip-up door opening structure, the opening and closing are usually completed by manual operation of the user. Such a structure has some significant disadvantages, as described below: 1. Dependence on manual operation: Traditionally, the door opening mechanism of flip doors mostly adopts a purely mechanical structure, which must be manually pulled or pushed by the user to complete the opening and closing operation. Especially when the cabinet door is heavy or frequently used, manual operation is laborious and inconvenient, and is not suitable for cabinet doors that need to be used frequently or are large in size.

[0003] 2. The opening angle is limited and difficult to control: The existing flip door structure usually achieves opening and support through fixed support rods or mechanical hinges, but lacks precise control of the opening angle. Users cannot easily adjust the opening angle of the door, and there are problems of over-opening or insufficient angle, which not only affects the user experience, but also increases the risk of door collision.

[0004] 3. The driving force puts a lot of pressure on the electric device: In the process of realizing electrification transformation, the existing door opening mechanism is difficult to reduce the working pressure of the electric push mechanism. When the driving force demand is high, the motor needs to provide a large output, resulting in excessive load, increased energy consumption, shortened service life, and possible noise or vibration, affecting the use effect.

[0005] 4. Lack of adaptability to different door weights: In actual applications, the weight of the door will vary according to the material and size, and the existing mechanism is difficult to flexibly adapt to doors of different weights. The lack of flexibility in the structure may result in the inability to open smoothly when driving a heavier door body, and unstable vibrations in a lightweight door body. Therefore, it is necessary to make further improvements. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide an electric flip door opening mechanism which has a simple structure, is easy to use, can control the opening angle of the cabinet door, and is suitable for cabinet doors of greater weight.

[0007] The object of the present invention is achieved in the following manner: an electric flip door opening mechanism, comprising a base fixed on a cabinet body, and a connecting rod seat installed on the cabinet door, wherein a first connecting rod and a second connecting rod are hingedly installed in the base, the middle part of the first connecting rod is hingedly connected to the middle part of the third connecting rod, the tail part of the third connecting rod is hingedly connected to the fourth connecting rod, and the other end of the fourth connecting rod is hingedly connected to the connecting rod seat; the head part of the third connecting rod is hingedly connected to the second connecting rod, and the tail part of the third connecting rod is hingedly connected to the connecting rod seat; It also includes a screw rod arranged in the base, the screw rod is connected to a reduction motor, and the reduction motor drives the screw rod to rotate; a driving nut is threaded on the screw rod, and the driving nut is connected to the third connecting rod through a first pulling arm. When the driving nut moves linearly, the first pulling arm drives the first connecting rod, the second connecting rod, the third connecting rod, the fourth connecting rod and the connecting rod seat to move relative to their hinge points, thereby realizing the opening and closing of the cabinet door.

[0008] Furthermore, the driving nut is covered with a guide sleeve, and correspondingly, the base is provided with a guide groove, and the guide sleeve is slidably installed in the guide groove.

[0009] Furthermore: the side wall of the guide sleeve is provided with a first hinge shaft hinged to the first pull arm, and the other end of the first pull arm is hinged to the hinge between the second connecting rod and the third connecting rod.

[0010] Furthermore: a driving plate is hingedly installed in the base, and the driving plate is hinged to the middle part of the second connecting rod through the second pulling arm; a power-assisting device is also arranged in the base, one end of the power-assisting device is hinged to the base, and the other end is hinged to 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.

[0011] Furthermore: the power-assisting device includes 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 hinged to the driving plate through a spring bracket, the tail of the spring fixing tube is connected to the base through an elastic force adjustment device, the 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 bracket.

[0012] Furthermore: a spring base is installed at the tail of the spring fixing tube, one end of the assist spring is pressed on the spring base, a support pin is arranged on the spring base, and both ends of the support pin extend into adjustment slots arranged on the base.

[0013] Further: the elastic force adjustment device is a support column arranged in the base, and a first elastic force adjustment screw hole is arranged on the support column. A first elastic force adjustment bolt is threaded in the first elastic force adjustment screw hole, and the end of the first elastic force adjustment bolt is connected to the spring base. Rotating the first elastic force adjustment bolt drives the spring base to move to adjust the elastic force of the assisting spring.

[0014] Furthermore: an elastic guide groove is provided on the driving plate, and the spring bracket is slidably installed in the elastic guide groove through an elastic guide column. A second elastic force adjustment screw hole is also provided on the driving plate, and a second elastic force adjustment bolt is threaded in the second elastic force adjustment screw hole. The other end of the second elastic force adjustment bolt is connected to the spring bracket, and the second elastic adjustment bolt is rotated to drive the elastic guide column to slide in the elastic guide groove.

[0015] Furthermore: an angle limit plate is hingedly installed in the base, and an angle adjustment bolt is rotatably installed in the angle limit plate. The angle adjustment bolt is threadedly connected to an angle adjustment nut arranged in the base. The angle adjustment bolt is rotated to drive the angle limit plate to swing in the base, so that the angle limit plate enters the motion trajectory of the second connecting rod, thereby limiting the maximum opening angle of the door opening mechanism.

[0016] Furthermore: a door closing damper is also installed in the base, and the door closing damper extends into the motion track of the first connecting rod to play a buffering role when the door opening mechanism is closed.

[0017] The beneficial effects of the present invention are: 1. Simple structure, low production cost and improved market competitiveness.

[0018] The present invention realizes the fully automatic opening and closing function of the flip door by integrating an electric drive device. The user only needs to press the control switch to open and close the door body without manually pulling the door, which greatly improves the convenience and intelligence level of use, and is particularly suitable for application scenarios that require frequent opening and closing or heavy doors.

[0019] The invention designs an angle limit structure, which uses components such as an angle limit plate and an angle adjustment bolt to enable users 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 adjusted according to different needs.

[0020] The present invention provides a booster device in the driving mechanism, which is used to provide additional thrust for opening the door body and share 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 increased.

[0021] 5. The present invention is equipped with a spring device with adjustable elastic force, which can be adjusted according to the different weights of the door body. Whether the door body is light or heavy, the spring can provide appropriate auxiliary force to ensure that the door opening mechanism always maintains stable operation and avoids switch imbalance caused by weight differences. This function makes the door opening mechanism suitable for cabinet doors of various materials and weights, enhancing the applicability and flexibility of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the present invention and the cabinet door assembly in an open state.

[0023] Figure 2 It is a schematic diagram of the present invention and the cabinet door assembly in a closed state.

[0024] Figure 3 This is a schematic diagram of the overall assembly of the structure of the present invention. Figure 4-6 This is a schematic diagram of the structure of the present invention after the housing is hidden.

[0025] Figure 7 It is a schematic diagram of the structure of the present invention in a closed state.

[0026] Figure 8 For the present invention Figure 5 A-section structure enlarged view.

[0027] Fig. 9 It is a schematic diagram of the structure of the power assist device in the present invention.

[0028] Fig.10 It is a schematic diagram of the angle limiting plate structure in the present invention. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to the accompanying drawings. An electric flip-up door opening mechanism comprises a base 6 fixed on a cabinet body and a connecting rod seat 5 installed on the cabinet door, wherein a first connecting rod 1 and a second connecting rod 2 are hingedly installed in the base 6, the middle part of the first connecting rod 1 is hingedly connected to the middle part of the third connecting rod 3, the tail part of the third connecting rod 3 is hingedly connected to the fourth connecting rod 4, and the other end of the fourth connecting rod 4 is hingedly connected to the connecting rod seat 5; the head part of the third connecting rod 3 is hingedly connected to the second connecting rod 2, and the tail part of the third connecting rod 3 is hingedly connected to the connecting rod seat 5; It also includes a screw rod 7 arranged in the base 6, the screw rod 7 is connected to a reduction motor 71, and the reduction motor 71 drives the screw rod 7 to rotate; a driving nut 72 is threaded on the screw rod 7, and the driving nut 72 is connected to the third connecting rod 3 through a first pulling arm 73. When the driving nut 72 moves linearly, the first pulling arm 73 drives 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 to move relative to their hinge points, thereby realizing the opening and closing of the cabinet door.

[0030] In one embodiment, the driving nut 72 is covered with a guide sleeve 74, and correspondingly, the base 6 is provided with a guide groove, and the guide sleeve 74 is slidably installed in the guide groove.

[0031] In one embodiment, the side wall of the guide sleeve 74 is provided with a first hinge shaft 75 hinged to the first pull arm 73 , and the other end of the first pull arm 73 is hinged to the hinge of the second connecting rod 2 and the third connecting rod 3 .

[0032] In one of the embodiments: a driving plate 8 is also hingedly installed in the base 6, and the driving plate 8 is hinged to the middle part of the second connecting rod 2 through a second pulling arm 81; a power-assisting device 9 is also provided in the base 6, one end of the power-assisting device 9 is hinged to the base 6, and the other end is hinged to the driving plate 8. The thrust generated by the power-assisting device 9 is always applied to the driving plate 8, pushing the driving plate 8 to swing.

[0033] In one of the embodiments: the power-assisting device 9 includes 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 hinged to the driving plate 8 through a spring bracket 93, the tail of the spring fixing tube 91 is connected to the base 6 through an elastic force adjustment device, the power-assisting spring 94 is sleeved on the cylindrical surfaces 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 bracket 93.

[0034] In one of the embodiments: a spring base 95 is installed at the tail of the spring fixing tube 91, one end of the assist spring 94 is pressed against the spring base 95, a support pin 96 is provided on the spring base 95, and both ends of the support pin 96 extend into an adjustment slot 97 provided on the base 6.

[0035] In one of the embodiments: the elastic force adjustment device is a support column 61 arranged in the base 6, and a first elastic force adjustment screw hole 62 is arranged on the support column 61. A first elastic force adjustment bolt 63 is threaded in the first elastic force adjustment screw hole 62, and an end of the first elastic force adjustment bolt 63 is connected to the spring base 95. Rotating the first elastic force adjustment bolt 63 drives the spring base 95 to move to adjust the elastic force of the assist spring 94.

[0036] In one of the embodiments: the driving plate 8 is provided with an elastic guide groove 82, and the spring bracket 93 is slidably installed in the elastic guide groove 82 through the elastic guide column 83. The driving plate 8 is also provided with a second elastic force adjustment screw hole 84, and a second elastic force adjustment bolt 85 is threaded in the second elastic force adjustment screw hole 84. The other end of the second elastic force adjustment bolt 85 is connected to the spring bracket 93. The second elastic force adjustment bolt 85 is rotated to drive the elastic guide column 83 to slide in the elastic guide groove 82.

[0037] In one of the embodiments: the base 6 is also hingedly installed with an angle limit plate 64, and an angle adjustment bolt 65 is rotatably installed in the angle limit plate 64. The angle adjustment bolt 65 is threadedly connected to an angle adjustment nut 66 set in the base 6. The angle adjustment bolt 65 is rotated to drive the angle limit plate 64 to swing in the base 6, so that the angle limit plate 64 enters the movement trajectory of the second connecting rod 2, thereby limiting the maximum opening angle of the door opening mechanism.

[0038] In one of the embodiments: a door closing damper 67 is also installed in the base 6, and the door closing damper 67 extends into the movement track of the first connecting rod 1 to play a buffering role when the door opening mechanism is closed.

[0039] Working principle: In the present invention, the screw rod 7 is driven to rotate by the reduction motor 71, thereby driving the driving nut 72 screwed on the screw rod to move linearly along the screw rod. When the reduction motor receives the opening or closing command, the screw rod starts to rotate, and the driving nut moves along the screw rod according to the rotation direction. Among them, the driving nut 72 is connected to the third connecting rod 3 through the first pulling arm 73. As the driving nut moves, the first pulling 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 seat 5 to move relative to their hinge points, thereby realizing the upward flipping opening or closing of the door body. The synergistic effect of each connecting rod can stably transmit power, so that the door body can be smoothly flipped up or down. Through the electric drive mode, the operation of manually pulling the cabinet door is avoided, which greatly improves the convenience and intelligence. In addition, since there is no need to manually drive the cabinet door to open and close, this product is particularly suitable for use in some relatively high cabinets.

[0040] Furthermore, the present invention is provided with an angle limit plate 64 in the base 6, and the position of the angle limit plate is controlled by an angle adjustment bolt 65. By rotating the angle adjustment bolt 65, the angle limit plate can be adjusted to enter or exit the motion track of the second connecting rod 2. When the cabinet door is opened to a certain angle, the angle limit plate blocks the second connecting rod from continuing to move, thereby limiting the maximum opening angle of the flip door. This design allows 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.

[0041] Furthermore: In this case, a power-assisting device 9 is also provided in the base 6, and the device is composed of a spring fixing tube 91 and a spring telescopic tube 92, and is equipped with a power-assisting spring 94 inside. One end of the power-assisting device is hinged to the base 6, and the other end is hinged to the drive plate 8. In the process of opening or closing the cabinet door, the power-assisting device continuously applies thrust to the drive plate 8 through the elastic force generated by the spring. For example, in the process of opening the door, when the cabinet door is opened to the set angle, when the swing angle of the drive plate is greater than the dead point position, the thrust generated by the spring will push the cabinet door to open. When the cabinet door is closed to the set angle, when the swing angle of the drive plate is less than the dead point position, the thrust generated by the spring will push the cabinet door to close. Due to the setting of the power-assisting device, the workload of the reduction motor and the screw is reduced, the efficiency of the motor is significantly improved, its service life is extended, and energy consumption is reduced.

[0042] It should be emphasized that: the spring fixing tube 91 of the power assist device is equipped with an elastic force adjusting device, and the user can adjust the elastic force of the power assist spring by adjusting the elastic force adjusting bolt 63 to adapt to the requirements of door bodies of different weights.

[0043] like Fig. 9 As shown, the second elastic force adjusting bolt 85 on the driving plate 8 can also be adjusted. The other end of the second elastic force adjusting bolt 85 is connected to the spring bracket 93. The second elastic force adjusting bolt 85 is rotated to drive the elastic guide column 83 to slide in the elastic 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 can be 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 when opening or closing, avoiding vibration or instability during operation, and improving the overall adaptability and reliability.

[0044] To sum up, compared with traditional technology, the present invention adopts an electric drive device, avoiding the tedious manual operation. The cabinet door can be opened and closed by an electric button or remote control. It is especially suitable for larger or heavier cabinet doors, greatly improving the user experience.

[0045] At the same time, through the combination of the angle limit plate and the angle adjustment bolt, the present invention realizes flexible control of the opening angle of the flip door. The user can adjust the maximum opening angle according to the needs of the use environment, effectively avoiding excessive opening, and improving the safety and durability of the door opening mechanism.

[0046] In addition, through the setting of the power assist device, part of the driving force is provided by the spring, which effectively reduces the workload of the electric drive device, reduces the wear of the motor, extends the service life of the electric device, and at the same time reduces the energy consumption of the system and improves the overall work efficiency.

[0047] In addition, the elastic force of the spring in the power assist device can be adjusted to adapt to doors of different weights, making the door opening mechanism highly adaptable. Whether it is a light or heavy door, it can maintain smooth opening and closing, avoiding the inconvenience caused by the difference in door weight. This design allows the mechanism to have a wider range of application scenarios and meet different usage needs.

[0048] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An electric flip door opening mechanism, characterized in that: It comprises a base (6) fixed on the cabinet body, and a connecting rod seat (5) installed on the cabinet door, wherein a first connecting rod (1) and a second connecting rod (2) are hingedly installed in the base (6), the middle part of the first connecting rod (1) is hingedly connected to the middle part of the third connecting rod (3), the tail part of the third connecting rod (3) is hingedly connected to the fourth connecting rod (4), and the other end of the fourth connecting rod (4) is hingedly connected to the connecting rod seat (5); the head part of the third connecting rod (3) is hingedly connected to the second connecting rod (2), and the tail part of the third connecting rod (3) is hingedly connected to the connecting rod seat (5); The cabinet also includes a screw rod (7) arranged in the base (6), the screw rod (7) being connected to a reduction motor (71), and the reduction motor (71) driving the screw rod (7) to rotate; a driving nut (72) being threadedly connected to the screw rod (7), and the driving nut (72) being connected to the third connecting rod (3) via a first pulling arm (73); when the driving nut (72) moves linearly, the first pulling arm (73) drives 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) to move relative to their hinge points, thereby realizing the opening and closing of the cabinet door.

2. The electric flip door opening mechanism according to claim 1, characterized in that: The driving nut (72) is sheathed with a guide sleeve (74), and correspondingly, the base (6) is provided with a guide groove, and the guide sleeve (74) is slidably installed in the guide groove.

3. The electric flip door opening mechanism according to claim 2, characterized in that: The side wall of the guide sleeve (74) is provided with a first hinge shaft (75) hinged to the first pull arm (73), and the other end of the first pull arm (73) is hinged to the hinge between the second connecting rod (2) and the third connecting rod (3).

4. The electric flip door opening mechanism according to claim 1, characterized in that: A driving plate (8) is also hingedly mounted in the base (6), and the driving plate (8) is hingedly connected to the middle part of the second connecting rod (2) via a second pulling arm (81). A boosting device (9) is also provided in the base (6), and one end of the boosting device (9) is hingedly connected to the base (6), and the other end is hingedly connected to the driving plate (8). The thrust generated by the boosting device (9) is always applied to the driving plate (8), so as to push the driving plate (8) to swing.

5. The electric flip door opening mechanism according to claim 4, characterized in that: The booster device (9) comprises a spring fixing tube (91) and a spring telescopic tube (92), wherein the spring telescopic tube (92) is sleeved inside the spring fixing tube (91), one end of the spring telescopic tube (92) is hinged to the drive plate (8) via a spring bracket (93), the tail of the spring fixing tube (91) is connected to the base (6) via an elastic force adjustment device, and a booster spring (94) is sleeved on the cylindrical surfaces of the spring fixing tube (91) and the spring telescopic tube (92), and the booster spring (94) pushes the drive plate (8) to swing via the spring bracket (93).

6. The electric flip door opening mechanism according to claim 5, characterized in that: A spring base (95) is installed at the rear of the spring fixing tube (91), one end of the assist spring (94) is pressed against the spring base (95), a support pin (96) is provided on the spring base (95), and both ends of the support pin (96) extend into an adjustment slot (97) provided on the base (6).

7. The electric flip door opening mechanism according to claim 5, characterized in that: The elastic force adjustment device is a support column (61) arranged in the base (6), the support column (61) is provided with a first elastic force adjustment screw hole (62), a first elastic force adjustment bolt (63) is threadedly connected in the first elastic force adjustment screw hole (62), the end of the first elastic force adjustment bolt (63) is connected to the spring base (95), and the first elastic force adjustment bolt (63) is rotated to drive the spring base (95) to move, so as to adjust the elastic force of the assisting spring (94).

8. The electric flip door opening mechanism according to claim 5, characterized in that: The drive plate (8) is provided with an elastic guide groove (82), and the spring bracket (93) is slidably mounted in the elastic guide groove (82) via the elastic guide column (83). The drive plate (8) is also provided with a second elastic force adjustment screw hole (84), and a second elastic force adjustment bolt (85) is threadedly connected in the second elastic force adjustment screw hole (84). The other end of the second elastic force adjustment bolt (85) is connected to the spring bracket (93), and the second elastic force adjustment bolt (85) is rotated to drive the elastic guide column (83) to slide in the elastic guide groove (82).

9. The electric flip door opening mechanism according to claim 1, characterized in that: An angle limiting plate (64) is hingedly mounted in the base (6), an angle adjusting bolt (65) is rotatably mounted in the angle limiting plate (64), the angle adjusting bolt (65) is threadedly connected to an angle adjusting nut (66) arranged in the base (6), and the angle adjusting bolt (65) is rotated to drive the angle limiting plate (64) to swing in the base (6), so that the angle limiting plate (64) enters the movement trajectory of the second connecting rod (2), thereby limiting the maximum opening angle of the door opening mechanism.

10. The electric flip door opening mechanism according to claim 1, characterized in that: A door closing damper (67) is also installed in the base (6). The door closing damper (67) extends into the movement track of the first connecting rod (1) to play a buffering role when the door opening mechanism is closed.

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