Double-screw-rod synchronous lifting plate mechanism

Abstract

The utility model relates to the technical field of lifting cabinets, lifting tables and lifting plate devices, and discloses a double-screw-rod synchronous lifting plate mechanism which comprises a mounting plate, supporting columns are fixedly connected to the left side and the right side of the front face of the mounting plate, a fixing frame is fixedly connected to the upper portions of the supporting columns, through grooves are formed in the surfaces of the outer walls of the supporting columns, and the through grooves are communicated with the through grooves. A transmission lead screw is rotationally connected to the inner bottom face of the supporting column, a driving unit is arranged above the supporting column, and a sliding block nut is connected to the outer side of the transmission lead screw in a threaded mode. According to the utility model, through the cooperation of the supporting column, the fixing frame, the driving unit, the through groove, the sliding block nut, the connecting block, the support and the back plate, the transmission lead screws on the two sides can be synchronously driven to rotate synchronously, double-lead-screw transmission is realized, the load strength is improved, and the transmission mechanism can be used as an electromechanical module accessory for output, is applied to a lifting cabinet, a lifting platform, a lifting plate and the like, and is high in adaptability and high in practicability. And the application range is wider.

Description

Technical Field

[0001] This utility model relates to the technical field of lifting cabinets, lifting platforms, and lifting plate devices, and in particular to a double screw synchronous lifting plate mechanism. Background Technology

[0002] Lift cabinets, lifting platforms, and lifting panels are modern home or industrial storage solutions widely used in everyday scenarios such as kitchens and studies. They are easy to operate, highly practical, and can effectively utilize the unused upper space of a house, hence their widespread use. They achieve vertical lifting of cabinets, countertops, panels, etc. through electric or mechanical systems to facilitate the storage and retrieval of items at higher locations.

[0003] A search revealed Chinese Patent Publication No. CN209499086U, which discloses a lift-up wall cabinet, including an inner cabinet and a base cabinet. The base cabinet includes a back panel and slide rails, with the slide rails including an inner slide rail and an outer slide rail. The back panel supports the inner slide rail along the normal direction of the back panel. Correspondingly, the sliding of the outer slide rail is guided by the inner slide rail along the axial direction of the inner slide rail and supported along the normal direction of the back panel. Since the inner and outer slide rails are in line contact, the support provided by the inner slide rail to the outer slide rail along the normal direction of the back panel is very solid, and the outer slide rail will not wobble excessively along the normal direction of the back panel during sliding.

[0004] The aforementioned hanging cabinet mechanism is only applicable to cabinets, limiting its scope of application. Furthermore, the three-point support structure of inner and outer slide rails plus intermediate transmission is complex in actual use, and the single-screw drive has limited load capacity. During use, the single-screw experiences significant wear due to the pressure from the lifting cabinet and its contents. If the single-screw malfunctions, the entire mechanism will stop working, greatly reducing its lifespan and impacting the performance of the lifting cabinet. Therefore, a dual-screw synchronous lifting plate mechanism is proposed. This not only solves the above problems but also serves as an output electromechanical module accessory, allowing for the addition of cabinets, platforms, and plates, upgrading traditional cabinets, platforms, and plates into automatic lifting systems. This offers greater adaptability and a wider range of applications. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a dual-screw synchronous lifting plate mechanism, which aims to improve the problems of limited load, high failure rate and short service life of the existing lifting cabinet using single screw transmission.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a dual-screw synchronous lifting plate mechanism, comprising a mounting plate, the mounting plate including an upper mounting plate and a lower mounting plate; the dual-screw synchronous lifting plate mechanism further includes: a drive unit, a support column, a fixing frame, a transmission screw, a slider nut, a connecting block, a bracket and a back plate;

[0007] The two support columns are respectively fixedly installed on the left and right sides of the front of the mounting plate, wherein the upper end of the support column is fixedly connected to the upper mounting plate and the lower end of the support column is fixedly connected to the lower mounting plate.

[0008] The two fixing frames are respectively fixedly installed on the upper ends of the two support columns; the drive unit is installed above the support columns, and the drive unit drives the transmission screw to rotate. The drive unit includes a motor, which is fixedly connected to the left side surface of the fixing frame located on the right side of the mounting plate. The output end of the motor is connected to a rotating shaft through a differential, and both ends of the rotating shaft are fixedly connected to transmission bevel gears.

[0009] The transmission screw is rotatably disposed on the inner bottom surface of the support column, the top end of the transmission screw passes through the support column and the fixing frame, and a rotating bevel gear is fixedly connected to the top end of the transmission screw;

[0010] The slider nut is connected to the outer thread of the transmission screw. A connecting block is fixedly connected to the outer wall surface of the slider nut. The connecting block passes through the support column. A bracket is fixedly connected to the end of the connecting block away from the slider nut. A back plate is provided on the front side of the support column. The front sides of the two brackets on the front sides of the two support columns on the left and right sides of the front of the mounting plate are fixedly connected to the back side of the back plate. The back plate has an H-shaped structure.

[0011] As a further description of the above technical solution: the rotating bevel gears at the top of the two transmission screws on the left and right sides of the front of the mounting plate mesh with the two transmission bevel gears on the left and right sides of the rotating shaft, respectively.

[0012] As a further description of the above technical solution: the slider nut is internally inserted into the support column.

[0013] As a further description of the above technical solution: the bracket is sleeved on the front side of the support column.

[0014] As a further description of the above technical solution: several threaded holes are provided on both the left and right sides of the front of the back plate.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, through the cooperation of the set support column, fixed frame, drive unit, rotating bevel gear, slider nut, connecting block, bracket and back plate, the transmission screws on both sides can be driven to rotate synchronously to realize double screw transmission, so as to reduce the load pressure of a single screw and improve the overall load strength. Moreover, it can be output as an electromechanical module accessory, which is suitable for various applications such as lifting cabinets, platforms, and plates. It is flexible in use and has a wider range of applications.

[0017] 2. In this utility model, by using the multiple threaded holes on the front side of the back plate, bolts can be used to fix objects of different sizes through the threaded holes, thereby improving the adaptability of the lifting mechanism. At the same time, a current sensor is installed inside the motor. When the object encounters resistance during the lifting process, the current sensor can determine whether the object is encountering resistance by increasing the current, thereby stopping the lifting mechanism and preventing damage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the dual-screw synchronous lifting plate mechanism proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the interior of the support column of a dual-screw synchronous lifting plate mechanism proposed in this utility model;

[0020] Figure 3 This utility model proposes a dual-screw synchronous lifting plate mechanism. Figure 1 A partial schematic diagram of point A;

[0021] Figure 4 This utility model proposes a dual-screw synchronous lifting plate mechanism. Figure 2 A schematic diagram of part C;

[0022] Figure 5 This utility model proposes a dual-screw synchronous lifting plate mechanism. Figure 1 A schematic diagram of part B;

[0023] Figure 6 This is a schematic diagram of the drive unit of a dual-screw synchronous lifting plate mechanism proposed in this utility model.

[0024] Legend:

[0025] 1. Mounting plate; 2. Support column; 3. Fixing frame; 41. Motor; 42. Rotating shaft; 43. Transmission bevel gear; 44. Rotating bevel gear; 6. Transmission lead screw; 7. Sliding nut; 8. Connecting block; 9. Bracket; 10. Back plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1-3This utility model provides an embodiment of a dual-screw synchronous lifting plate mechanism, including a mounting plate 1, which comprises an upper mounting plate and a lower mounting plate. The dual-screw synchronous lifting plate mechanism also includes a drive unit, a support column 2, a fixing frame 3, a transmission screw 6, a slider nut 7, a connecting block 8, a bracket 9, and a back plate 10.

[0028] Support columns 2 are fixedly connected to both the left and right sides of the front of the mounting plate 1, meaning that two support columns 2 are respectively fixedly installed on the left and right sides of the front of the mounting plate 1. The upper end of each support column 2 is fixedly connected to the upper mounting plate, and the lower end of each support column 2 is fixedly connected to the lower mounting plate. Each support column 2 consists of a base plate, a top plate, and a U-shaped housing. Two U-shaped housings are fixedly connected to the front and rear sides of the upper surface of the base plate in a mirror-like structure, with a gap between the two U-shaped housings. The top plate is fixedly connected to the top of the two U-shaped housings. A fixing frame 3 is fixedly connected above the support column 2, and two fixing frames 3 are respectively fixedly installed at the upper ends of the two support columns 2. A transmission screw 6 is rotatably connected to the inner bottom surface of the support column 2. The top end of the transmission screw 6 passes through the support column 2 and the fixing frame 3. A rotating bevel gear 44 is fixedly connected to the top end of the transmission screw 6. When the rotating bevel gear 44 rotates, it drives the transmission screw 6 to rotate synchronously.

[0029] Reference Figures 2-4 A sliding nut 7 is threaded onto the outer side of the transmission screw 6. The sliding nut 7 is inserted into the support column 2. The support column 2 guides and limits the movement of the sliding nut 7, allowing it to move only linearly up and down within the support column 2. When the transmission screw 6 rotates, it drives the sliding nut 7 to move synchronously. At this time, the sliding nut 7 is limited by the support column 2, allowing it to move only linearly up and down. A connecting block 8 is fixedly connected to the outer surface of the sliding nut 7. When the sliding nut 7 moves, it drives the connecting block 8. The connecting block 8 passes through the support column 2 and through the gap between the two U-shaped shells in the support column 2, which can avoid the support column 2 from obstructing the movement of the connecting block 8. The end of the connecting block 8 away from the slider nut 7 is fixedly connected to the bracket 9. When the slider nut 7 moves, the connecting block 8 can drive the bracket 9 to move synchronously. The bracket 9 is sleeved on the front side of the support column 2. When the transmission screw 6 rotates, it can drive the slider nut 7 to move linearly in the up and down direction under the limit of the support column 2, and then drive the bracket 9 to move synchronously through the connecting block 8.

[0030] A back plate 10 is provided on the front side of the support column 2. The front sides of the two brackets 9 on the front sides of the two support columns 2 on the left and right sides of the front of the mounting plate 1 are fixedly connected to the back side of the back plate 10. The back plate 10 has an H-shaped structure. When the brackets 9 move, they can drive the back plate 10 to move synchronously. In this solution, the back plate 10 can be driven to move in a straight line in the up and down direction by the rotation of the two transmission screws 6 inside the two support columns 2 on the left and right sides of the front of the mounting plate 1. This can drive the object fixed on the front side of the back plate 10 to move up and down. While increasing the load strength of the transmission screws 6, it also ensures the smooth operation of the object. Several threaded holes are opened on the left and right sides of the front of the back plate 10. Bolts can be used to fix objects of different sizes through the threaded holes at different positions. The object can be fixed on the front side of the back plate 10, so that the lifting mechanism can drive objects of different sizes to move up and down, improving the adaptability of the lifting structure.

[0031] Reference Figure 1 , Figure 5 and Figure 6 A drive unit is installed above the support column 2. The drive unit includes a motor 41, which contains a current sensor. When an object encounters resistance during lifting, the load on the motor 41 suddenly increases, and the current changes abruptly. The current sensor can determine whether the object is encountering resistance during lifting by detecting the increase in current. When the current changes abruptly, the motor 41 can be controlled to stop in time, thus stopping the lifting mechanism and preventing damage. The motor 41 is fixedly connected to the left side of the mounting bracket 3 located on the right side of the mounting plate 1. The output end of the motor 41 is connected to the rotating shaft 42 through a differential. When the motor 41 starts, it can drive the rotating shaft 42 through the differential. The rotating shaft 42 has two fixed transmission bevel gears 43 at both ends. When the rotating shaft 42 rotates, it can synchronously drive the two transmission bevel gears 43 fixed on both sides to rotate. The rotating bevel gears 44 at the top of the two transmission screws 6 on the left and right sides of the front of the mounting plate 1 mesh with the two transmission bevel gears 43 on the left and right sides of the rotating shaft 42 respectively. When the transmission bevel gears 43 rotate, they can drive the rotating bevel gears 44 to rotate synchronously, which in turn can drive the two transmission screws 6 on the front side of the mounting plate 1 to rotate synchronously, realizing the synchronous transmission of the two transmission screws 6, so as to reduce the load pressure of a single transmission screw 6 and improve the overall load strength.

[0032] Working principle: The object is fixed to the front of the back plate 10 with bolts. The motor 41 is started, which drives the rotating shaft 42 and the transmission bevel gear 43 to rotate. Then, the rotating bevel gear 44 drives the transmission bevel gear 43 to rotate synchronously, so that the two transmission screws 6 on the front of the mounting plate 1 rotate synchronously, realizing the synchronous transmission of the two transmission screws 6, thereby reducing the load pressure of a single transmission screw 6. When the transmission screw 6 rotates, it can drive the slider nut 7, connecting block 8, bracket 9 and back plate 10 to move up and down under the limit of the support column 2, thereby driving the object to rise and fall. It is easy to operate, has high stability, and can be output as an electromechanical module accessory for use in lifting cabinets, lifting platforms, lifting plates, etc., with strong adaptability. When the object encounters resistance during the lifting process, the current sensor set at the motor 41 detects a sudden change in the current and can control the motor 41 to stop in time, realizing the obstacle encounter stop and avoiding damage to the lifting mechanism.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dual lead screw synchronous lifting plate mechanism comprising a mounting plate (1), characterized in that: The mounting plate (1) comprises an upper mounting plate and a lower mounting plate; The double-wire rod synchronous lifting plate mechanism further comprises a driving unit, support columns (2), fixing frames (3), transmission wire rods (6), sliding block nuts (7), connecting blocks (8), brackets (9) and back plates (10); Two support columns (2) are fixedly arranged on the left and right sides of the front of the mounting plate (1), wherein the upper ends of the support columns (2) are fixedly connected with the upper mounting plate, and the lower ends of the support columns (2) are fixedly connected with the lower mounting plate. Two fixing frames (3) are fixedly arranged at the upper ends of the two support columns (2); the driving unit is arranged above the support columns (2), and the driving unit drives the transmission wire rod (6) to rotate; the driving unit comprises a motor (41), the motor (41) is fixedly connected to the left side surface of the fixing frame (3) on the right side of the mounting plate (1), the output end of the motor (41) is connected with a rotating shaft (42) through a differential mechanism, and the left and right ends of the rotating shaft (42) are fixedly connected with transmission bevel gears (43). The transmission wire rod (6) is rotatably arranged at the inner bottom surface of the support column (2), the top end of the transmission wire rod (6) penetrates the support column (2) and the fixing frame (3), and the top end of the transmission wire rod (6) is fixedly connected with a rotating bevel gear (44). The sliding block nut (7) is connected to the outer thread of the transmission wire rod (6), the outer wall surface of the sliding block nut (7) is fixedly connected with the connecting block (8), the connecting block (8) penetrates the support column (2), one end of the connecting block (8) away from the sliding block nut (7) is fixedly connected with the bracket (9), the front side of the support column (2) is provided with the back plate (10), the front sides of the two brackets (9) of the two support columns (2) on the left and right sides of the front of the mounting plate (1) are fixedly connected with the back of the back plate (10), and the back plate (10) has an H-shaped structure.

2. A dual lead screw synchronous lift plate mechanism as claimed in claim 1, wherein: The rotating bevel gears (44) at the top of the two transmission wire rods (6) on the left and right sides of the front of the mounting plate (1) are respectively engaged with the two transmission bevel gears (43) on the left and right sides of the rotating shaft (42).

3. A dual lead screw synchronous lift plate mechanism as described in claim 1, wherein: The sliding block nut (7) is inserted into the support column (2).

4. A dual lead screw synchronous lift plate mechanism as described in claim 1, wherein: The bracket (9) is sleeved on the front side of the support column (2).

5. A dual lead screw synchronous lift plate mechanism as described in claim 1, wherein: The front left and right sides of the back plate (10) are provided with a plurality of threaded holes.

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