Electric flip-up door opening mechanism

Abstract

An electric flip-up door opening mechanism. The electric flip-up door opening mechanism comprises a base (6) fixed to a cabinet and a link seat (5) mounted on a cabinet door, wherein a first link (1) and a second link (2) are hinged and mounted in the base (6); the middle of the first link (1) is hinged to the middle of a third link (3); the tail of the first link (1) is hinged to a fourth link (4); the other end of the fourth link (4) is hinged to the link seat (5); and the head of the third link (3) is hinged to the second link (2), and the tail of the third link (3) is hinged to the link seat (5). The electric flip-up door opening mechanism further comprises a screw (7) arranged in the base (6), wherein a gear motor (71) is connected to the screw (7), and the gear motor (71) drives the screw (7) to rotate; and a driving nut (72) is screwed onto the screw (7), and the driving nut (72) is connected to the third link (3) by means of a first pull arm (73). When the driving nut (72) moves linearly, the first link (1), the second link (2), the third link (3), the fourth link (4) and the link seat (5) are driven by means of the first pull arm (73) to move relative to the hinge points thereof, thereby opening and closing the cabinet door.

Description

An electric lift-up door opening mechanism Technical Field

[0001] This invention relates to a home hardware accessory, specifically an electric lift-up door opening mechanism. Background Technology

[0002] Existing lift-up door mechanisms are widely used in cabinets and cupboards to open and close the doors. However, traditional lift-up door mechanisms typically rely on manual operation by the user. This type of structure has some significant drawbacks, as described below:

[0003] 1. Reliance on manual operation: Traditional top-opening door mechanisms mostly use a purely mechanical structure, which requires the user to manually pull or push to complete the opening and closing operation. Especially when the cabinet door is heavy or used frequently, manual operation is both laborious and inconvenient, and is not suitable for cabinet doors that need to be used frequently or are large in size.

[0004] 2. Limited and difficult-to-control opening angle: Existing lift-up door structures typically achieve opening and support through fixed support rods or mechanical hinges, but lack precise control over the opening angle. Users cannot easily adjust the door's opening angle, resulting in problems of over-opening or under-opening, which not only affects the user experience but also increases the risk of cabinet door impact.

[0005] 3. High pressure on the electric actuator due to driving force: During the electrification process, the existing door opening mechanism cannot alleviate the working pressure on the electric drive 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 performance.

[0006] 4. Lack of adaptability to different door weights: In practical applications, the weight of cabinet doors varies depending on the material and size, and the existing mechanism struggles to flexibly adapt to doors of different weights. The lack of structural flexibility can lead to difficulties in smoothly opening heavier doors, while lightweight doors may experience unstable vibrations. Therefore, further improvements are necessary. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an electric upward-opening door mechanism that is simple in structure, easy to use, can control the opening angle of the cabinet door, and is suitable for cabinet doors of greater weight.

[0008] The objective of this invention is achieved in the following manner: an electric upward-opening door 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 hinged to the middle part of a third connecting rod, the tail of the third connecting rod is hinged to a fourth connecting rod, and the other end of the fourth connecting rod is hinged to 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.

[0009] It also includes a screw installed in the base, the screw is connected to a geared motor, and the geared motor drives the screw to rotate; a drive nut is screwed onto the screw, and the drive nut is connected to the third link through the first pull arm. When the drive nut moves linearly, it drives the first link, the second link, the third link, the fourth link and the link seat to move relative to their hinge points through the first pull arm, thereby realizing the opening and closing of the cabinet door.

[0010] Furthermore, the drive nut is fitted with a guide sleeve, and correspondingly, the base is provided with a guide groove, in which the guide sleeve is slidably installed.

[0011] Furthermore, the guide sleeve sidewall is provided with a first hinge shaft that is hinged to the first pull arm, and the other end of the first pull arm is hinged to the hinge joint between the second link and the third link.

[0012] Furthermore: a drive plate is also hingedly installed inside the base, and the drive plate is hinged to the middle of the second connecting rod via the second pull arm; an assist device is also provided inside the base, one end of the assist device is hinged to the base, and the other end is hinged to the drive plate, and the thrust generated by the assist device is always applied to the drive plate to push the drive plate to swing.

[0013] Furthermore: the assist device includes a spring fixed tube and a spring telescopic tube. The spring telescopic tube is fitted inside the spring fixed tube. One end of the spring telescopic tube is hinged to the drive plate through a spring bracket. The tail end of the spring fixed tube is connected to the base through an elastic adjustment device. The assist spring is fitted on the cylindrical surface of the spring fixed tube and the spring telescopic tube. The assist spring pushes the drive plate to swing through the spring bracket.

[0014] Furthermore: a spring base is installed at the tail end of the spring fixing tube, one end of the assist spring presses against the spring base, and a support pin is provided on the spring base, with both ends of the support pin extending into the adjustment groove provided on the base.

[0015] Furthermore: the elasticity adjustment device is a support column installed in the base, the support column is provided with a first elasticity adjustment screw hole, a first elasticity adjustment bolt is screwed into the first elasticity adjustment screw hole, the end of the first elasticity adjustment bolt is connected to the spring base, rotating the first elasticity adjustment bolt drives the spring base to move, so as to adjust the elasticity of the assist spring.

[0016] Furthermore: the drive plate is provided with an elastic guide groove, and the spring bracket is slidably installed in the elastic guide groove through the elastic guide post. The drive plate is also provided with a second elastic adjustment screw hole, and a second elastic adjustment bolt is screwed into the second elastic adjustment screw hole. The other end of the second elastic adjustment bolt is connected to the spring bracket. Rotating the second elastic adjustment bolt drives the elastic guide post to slide in the elastic guide groove.

[0017] Furthermore, an angle limiting plate is hingedly installed inside the base, and an angle adjusting bolt is rotatably installed inside the angle limiting plate. The angle adjusting bolt is screwed to an angle adjusting nut set inside the base. Rotating the angle adjusting bolt drives the angle limiting plate to swing inside the base, so that the angle limiting plate enters the movement trajectory of the second link, thereby limiting the maximum opening angle of the door opening mechanism.

[0018] Furthermore, a door-closing damper is also installed inside the base. The door-closing damper extends into the movement trajectory of the first link and plays a buffering role when the door-opening mechanism closes.

[0019] The beneficial effects of this invention are: 1. Simple structure, low production cost, and improved market competitiveness.

[0020] This invention integrates an electric drive device to achieve fully automatic opening and closing of the top-hinged door. Users only need to press the control switch to open and close the door, eliminating the need to manually pull the door, greatly improving ease of use and intelligence. It is especially suitable for applications requiring frequent opening and closing or heavy cabinet doors.

[0021] This invention designs an angle limiting structure that, using an angle limiting plate and angle adjusting bolts, allows users to flexibly adjust the maximum opening angle of the door. This feature not only improves structural safety and prevents damage caused by over-opening, but also enhances the durability of the mechanism, ensuring that the door opening mechanism can be customized to meet different needs.

[0022] This invention incorporates an assist device in the drive mechanism, which provides additional thrust for opening the door, thus sharing the load on the electric drive system. By reducing the workload of the electric mechanism, energy consumption and wear of the motor are reduced, thereby extending the service life of the electric drive system.

[0023] 5. This invention is equipped with an adjustable spring device, which can adjust the spring force according to the different weights of the door. Whether the door is light or heavy, the spring can provide appropriate auxiliary force to ensure that the opening mechanism always operates smoothly and avoids imbalance caused by weight differences. This function makes the opening mechanism suitable for cabinet doors of various materials and weights, enhancing the product's applicability and flexibility. Attached Figure Description

[0024] Figure 1 is a schematic diagram of the present invention and the cabinet door assembly in the open state.

[0025] Figure 2 is a schematic diagram of the present invention and the cabinet door assembly in the closed state.

[0026] Figures 4-6 are schematic diagrams of the structure of the present invention after the outer shell is hidden.

[0027] Figure 7 is a schematic diagram of the structure of the present invention in the closed state.

[0028] Figure 8 is an enlarged view of the structure of part A in Figure 5 of this invention.

[0029] Figure 9 is a schematic diagram of the assist device structure in this invention.

[0030] Figure 10 is a schematic diagram of the angle limiting plate structure in this invention. Detailed Implementation

[0031] The invention will be further described below with reference to the accompanying drawings. An electric upward-opening door mechanism includes a base 6 fixed to a cabinet body and a connecting rod seat 5 installed on the cabinet door. A first connecting rod 1 and a second connecting rod 2 are hinged within the base 6. The middle portion of the first connecting rod 1 is hinged to the middle portion of a third connecting rod 3, and the tail portion of the third connecting rod 3 is hinged to a fourth connecting rod 4. The other end of the fourth connecting rod 4 is hinged to the connecting rod seat 5. The head of the third connecting rod 3 is hinged to the second connecting rod 2, and the tail portion of the third connecting rod 3 is hinged to the connecting rod seat 5.

[0032] It also includes a screw 7 set in the base 6, the screw 7 is connected to a geared motor 71, the geared motor 71 drives the screw 7 to rotate; a drive nut 72 is screwed on the screw 7, the drive nut 72 is connected to the third link 3 through the first pull arm 73, when the drive nut 72 moves linearly, it drives the first link 1, the second link 2, the third link 3, the fourth link 4 and the link seat 5 to move relative to their hinge points through the first pull arm 73, so as to realize the opening and closing of the cabinet door.

[0033] In one embodiment: the drive nut 72 is fitted 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.

[0034] In one embodiment: the guide sleeve 74 is provided with a first hinge shaft 75 on its side wall, which is 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.

[0035] In one embodiment: a drive plate 8 is also hingedly installed inside the base 6, and the drive plate 8 is hinged to the middle of the second connecting rod 2 via the second pull arm 81; an assist device 9 is also provided inside the base 6, one end of the assist device 9 is hinged to the base 6, and the other end is hinged to the drive plate 8, and the thrust generated by the assist device 9 is always applied to the drive plate 8 to push the drive plate 8 to swing.

[0036] In one embodiment: the assist device 9 includes a spring fixing tube 91 and a spring telescopic tube 92. The spring telescopic tube 92 is fitted inside the spring fixing tube 91. One end of the spring telescopic tube 92 is hinged to the drive plate 8 through a spring bracket 93. The tail end of the spring fixing tube 91 is connected to the base 6 through a spring adjustment device. The assist spring 94 is fitted on the cylindrical surface of the spring fixing tube 91 and the spring telescopic tube 92. The assist spring 94 pushes the drive plate 8 to swing through the spring bracket 93.

[0037] In one embodiment: a spring base 95 is installed at the tail of the spring fixing tube 91, one end of the assist spring 94 presses against the spring base 95, and a support pin 96 is provided on the spring base 95, with both ends of the support pin 96 extending into the adjustment groove 97 provided on the base 6.

[0038] In one embodiment: the elasticity adjustment device is a support column 61 set in the base 6. The support column 61 is provided with a first elasticity adjustment screw hole 62. A first elasticity adjustment bolt 63 is screwed into the first elasticity adjustment screw hole 62. The end of the first elasticity adjustment bolt 63 is connected to the spring base 95. Rotating the first elasticity adjustment bolt 63 drives the spring base 95 to move, so as to adjust the elasticity of the assist spring 94.

[0039] In one embodiment: the drive 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 post 83. The drive plate 8 is also provided with a second elastic adjustment screw hole 84, and a second elastic adjustment bolt 85 is screwed into the second elastic adjustment screw hole 84. The other end of the second elastic adjustment bolt 85 is connected to the spring bracket 93. Rotating the second elastic adjustment bolt 85 drives the elastic guide post 83 to slide in the elastic guide groove 82.

[0040] In one embodiment: An angle limiting plate 64 is also hingedly installed inside the base 6. An angle adjusting bolt 65 is rotatably installed inside the angle limiting plate 64. The angle adjusting bolt 65 is screwed to the angle adjusting nut 66 set inside the base 6. Rotating the angle adjusting bolt 65 drives the angle limiting plate 64 to swing inside the base 6, so that the angle limiting plate 64 enters the movement trajectory of the second link 2, thereby limiting the maximum opening angle of the door opening mechanism.

[0041] In one embodiment, a door-closing damper 67 is also installed in the base 6. The door-closing damper 67 extends into the movement trajectory of the first link 1 and plays a buffering role when the door opening mechanism closes.

[0042] Working Principle: In this invention, a geared motor 71 drives a screw 7 to rotate, thereby causing the drive nut 72 screwed onto the screw to move linearly along the screw. When the geared motor receives an open or close command, the screw begins to rotate, and the drive nut moves along the screw according to the direction of rotation. The drive nut 72 is connected to the third link 3 via a first pull arm 73. As the drive nut moves, the first pull arm 73 is pulled or pushed, thereby driving the third link 3 to move. The movement of the third link causes the first link 1, second link 2, fourth link 4, and link seat 5 to move together relative to their hinge points, thus realizing the upward opening or closing of the door. The coordinated action of each link can stably transmit power, allowing the door to smoothly open or close. The electric drive method avoids the need for manual pulling of the cabinet door, greatly improving convenience and intelligence. Furthermore, since there is no need to manually drive the cabinet door to open or close, this product is particularly suitable for use with taller cabinets.

[0043] Furthermore, the present invention includes an angle limiting plate 64 within the base 6, and the position of the angle limiting plate is controlled by an angle adjusting bolt 65. By rotating the angle adjusting bolt 65, the movement trajectory of the angle limiting plate entering or exiting the second link 2 can be adjusted. When the cabinet door is opened to a certain angle, the angle limiting plate blocks the second link from continuing to move, thereby limiting the maximum opening angle of the upward-opening door. This design allows users to precisely control the maximum opening range of the cabinet door according to actual needs, improving safety and avoiding damage caused by excessive opening of the door.

[0044] Furthermore, in this case, an assistive device 9 is also provided inside the base 6. This device consists of a spring fixing tube 91 and a spring telescopic tube 92, and is equipped with an assistive spring 94 inside. One end of the assistive device is hinged to the base 6, and the other end is hinged to the drive plate 8. During the opening or closing of the cabinet door, the assistive device continuously applies a pushing force to the drive plate 8 through the elastic force generated by the spring. For example, during the opening process, when the cabinet door is opened to a set angle, if the angle of the drive plate swings is greater than the dead point position, the pushing force generated by the spring will push the cabinet door open. When the cabinet door is closed to a set angle, if the angle of the drive plate swings is less than the dead point position, the pushing force generated by the spring will push the cabinet door close. Due to the setting of this assistive device, the workload of the geared motor and screw is reduced, the efficiency of the motor is significantly improved, its service life is extended, and energy consumption is reduced.

[0045] It is important to note that the spring fixing tube 91 of the assist device is equipped with a spring force adjustment device. Users can adjust the spring force of the assist spring by adjusting the spring force adjustment bolt 63, so as to adapt to the needs of door bodies of different weights.

[0046] As shown in Figure 9, the second elastic adjustment bolt 85 on the drive plate 8 can also be adjusted. The other end of the second elastic adjustment bolt 85 is connected to the spring bracket 93. Rotating the second elastic adjustment bolt 85 drives the elastic guide post 83 to slide within the elastic guide groove 82. By changing the force point of the assist spring 94 on the drive plate 8, the length of the assist lever is changed, thus adjusting the magnitude of the assist. Therefore, regardless of whether the door is light or heavy, by reasonably adjusting the elasticity of the assist spring or the length of the assist lever, the door can remain stable when opening or closing, avoiding vibration or instability during operation, and improving overall adaptability and reliability.

[0047] In summary, compared with traditional technologies, the present invention uses an electric drive device, which avoids the tediousness of manual operation. The cabinet door can be opened and closed by electric buttons or remote control, which is especially suitable for larger or heavier cabinet doors and greatly improves the user experience.

[0048] Meanwhile, by combining the angle limiting plate and the angle adjusting bolt, this invention enables flexible control of the opening angle of the upward-opening door. Users can adjust the maximum opening angle according to the needs of the usage environment, effectively avoiding over-opening and improving the safety and durability of the door opening mechanism.

[0049] In addition, by setting up the 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.

[0050] Furthermore, the spring force in the assist device is adjustable to accommodate doors of different weights, making the opening mechanism highly adaptable. Whether the door is lightweight or heavy-duty, it can maintain smooth opening and closing, avoiding inconvenience caused by differences in door weight. This design allows the mechanism to be used in a wider range of scenarios, meeting diverse usage needs.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An electric upward-opening door mechanism, characterized in that: It includes a base (6) fixed on the cabinet body and a connecting rod seat (5) installed on the cabinet door. The base (6) has a first connecting rod (1) and a second connecting rod (2) hinged in it. The middle part of the first connecting rod (1) is hinged to the middle part of the third connecting rod (3), the tail of the third connecting rod (3) is hinged to the fourth connecting rod (4), and the other end of the fourth connecting rod (4) is hinged to the connecting rod seat (5). The head of the third connecting rod (3) is hinged to the second connecting rod (2), and the tail of the third connecting rod (3) is hinged to the connecting rod seat (5). It also includes a screw (7) set in the base (6), the screw (7) is connected to a geared motor (71), the geared motor (71) drives the screw (7) to rotate; a drive nut (72) is screwed on the screw (7), the drive nut (72) is connected to the third link (3) through the first pull arm (73), when the drive nut (72) moves linearly, it drives the first link (1), the second link (2), the third link (3), the fourth link (4) and the link seat (5) to move relative to their hinge points through the first pull arm (73) to realize the opening and closing of the cabinet door.

2. The electric upward-opening door mechanism according to claim 1, characterized in that: The drive nut (72) is fitted 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 upward-opening door mechanism according to claim 2, characterized in that: The guide sleeve (74) has a first hinge shaft (75) on its side wall that is hinged to the first pull arm (73). The other end of the first pull arm (73) is hinged to the hinge between the second link (2) and the third link (3).

4. The electric upward-opening door mechanism according to claim 1, characterized in that: The base (6) is also hinged to a drive plate (8), which is hinged to the middle of the second connecting rod (2) via the second pull arm (81). The base (6) is also equipped with an assist device (9), one end of which is hinged to the base (6) and the other end is hinged to the drive plate (8). The thrust generated by the assist device (9) is always applied to the drive plate (8), which pushes the drive plate (8) to swing.

5. The electric upward-opening door mechanism according to claim 4, characterized in that: The assist device (9) includes a spring fixing tube (91) and a spring telescopic tube (92). The spring telescopic tube (92) is fitted inside the spring fixing tube (91). One end of the spring telescopic tube (92) is hinged to the drive plate (8) through a spring bracket (93). The tail of the spring fixing tube (91) is connected to the base (6) through an elastic adjustment device. The assist spring (94) is fitted on the cylindrical surface of the spring fixing tube (91) and the spring telescopic tube (92). The assist spring (94) pushes the drive plate (8) to swing through the spring bracket (93).

6. The electric upward-opening door mechanism according to claim 5, characterized in that: The spring fixing tube (91) is equipped with a spring base (95) at its tail end. One end of the assist spring (94) presses against the spring base (95). A support pin (96) is provided on the spring base (95). Both ends of the support pin (96) extend into the adjustment groove (97) provided on the base (6).

7. The electric upward-opening door mechanism according to claim 5, characterized in that: The elasticity adjustment device is a support column (61) set in the base (6). The support column (61) is provided with a first elasticity adjustment screw hole (62). A first elasticity adjustment bolt (63) is screwed into the first elasticity adjustment screw hole (62). The end of the first elasticity adjustment bolt (63) is connected to the spring base (95). Rotating the first elasticity adjustment bolt (63) drives the spring base (95) to move, so as to adjust the elasticity of the assist spring (94).

8. The electric upward-opening door 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 installed in the elastic guide groove (82) through the elastic guide post (83). The drive plate (8) is also provided with a second elastic adjustment screw hole (84), and a second elastic adjustment bolt (85) is screwed into the second elastic adjustment screw hole (84). The other end of the second elastic adjustment bolt (85) is connected to the spring bracket (93). Rotating the second elastic adjustment bolt (85) drives the elastic guide post (83) to slide in the elastic guide groove (82).

9. The electric upward-opening door mechanism according to claim 1, characterized in that: An angle limiting plate (64) is also hinged inside the base (6). An angle adjusting bolt (65) is rotatably installed inside the angle limiting plate (64). The angle adjusting bolt (65) is screwed to the angle adjusting nut (66) set inside the base (6). Rotating the angle adjusting bolt (65) drives the angle limiting plate (64) to swing inside the base (6), so that the angle limiting plate (64) enters the movement trajectory of the second link (2) and limits the maximum opening angle of the door opening mechanism.

10. The electric upward-opening door mechanism according to claim 1, characterized in that: The base (6) is also equipped with a door damper (67), which extends into the movement trajectory of the first link (1) and plays a buffering role when the door opening mechanism is closed.

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