Drawer climbing platform lifting jack

Abstract

A drawer climbing platform lifting jack comprises a static sliding rail fixed to a cabinet body and a movable sliding rail installed on the static sliding rail in a sliding mode, and a bearing frame is installed at the front end of the movable sliding rail. The bottom of the bearing frame extends downwards to be provided with supporting legs connected with the ground. A movable area is arranged at the bottom of the bearing frame, and the front end of the movable sliding rail is installed in the movable area; a lifting seat is hinged in the bearing frame, the front end of the lifting seat extends outwards to form a driving arm, and the bottom of the driving arm is pressed on the movable sliding rail; a tension device is arranged between the bearing frame and the lifting seat and pulls the driving arm to swing downwards, the bearing frame is pushed to tilt upwards, and the bottoms of the supporting feet are forced to leave the ground. The beneficial effects of the utility model are that the supporting legs are automatically switched off from the ground under the condition that the supporting legs are never treaded, thereby ensuring that the drawer is separated from the ground in the sliding process or under the condition of no load, and preventing the supporting legs from being abraded and scraped with the ground.

Description

Technical Field

[0001] This utility model relates to a drawer lift, specifically a drawer lift device. Background Technology

[0002] To maximize space utilization and store more items, kitchen cabinets on the market are often designed as wall-mounted cabinets or high cabinets. However, in actual use, users often face the problem of insufficient height when reaching items in higher positions, especially for shorter individuals, the elderly, and children. Traditional solutions involve using separate ladders or stools, increasing the steps required to retrieve items. These separate ladders also occupy extra space, are difficult to store, and are inconvenient to use. To address these drawbacks, a ladder system has emerged that is integrated into the bottom of the cabinet body, using sliding rails to slide and pull the ladder in, eliminating the problems caused by separate storage and improving ease of use. However, new problems arise. To enhance support strength, the bottom of the ladder needs to contact the ground, leading to friction during sliding. This increased friction causes the ladder to jam or stop, causing wear and tear on the support legs or the ground, reducing the ladder's lifespan, affecting user experience, and increasing maintenance costs. Therefore, further improvements are necessary. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a drawer lifter with a simple structure, low manufacturing cost, automatic lifting of the support legs when not in use to avoid scratches, protection of the support legs from damage to the ground, extended service life, and smooth, stable, reliable, and safe drawer opening and closing process.

[0004] The purpose of this utility model is achieved in the following way: a drawer lifter, which includes a static slide rail fixed on the cabinet and a movable slide rail slidably installed on it, wherein a load-bearing frame is installed at the front end of the movable slide rail.

[0005] The bottom of the load-bearing frame extends downward and is equipped with support legs that connect to the ground;

[0006] The bottom of the load-bearing frame is provided with an movable area, and the front end of the movable slide rail is installed in the movable area; a lifting seat is hinged inside the load-bearing frame, and a drive arm extends outward from the front end of the lifting seat, with the bottom of the drive arm bearing on the movable slide rail.

[0007] A tensioning device is installed between the load-bearing frame and the lifting seat. The tensioning device pulls the drive arm downward to swing, pushing the load-bearing frame upward and forcing the bottom of the support foot off the ground.

[0008] The load-bearing frame has a clearance groove, and hinge seats are provided on both sides of the clearance groove. The drive arm has hinge shafts on both sides, and the hinge shafts are rotatably installed in the hinge seats.

[0009] The tension device includes a first spring column located on both sides of the bottom of the lifting seat and a second spring column located inside the load-bearing frame. The two ends of the tension spring are provided with hooks, which are hooked onto the first spring column and the second spring column respectively. The tension spring generates tension, which pulls the drive arm to swing downward.

[0010] The bottom of the load-bearing frame is provided with a fastening groove, and the elastic hook provided on the top of the movable slide rail is inserted into the fastening groove.

[0011] The load-bearing frame has a through slot, and the movable slide rail has a connection hole. A plug rod is installed in the connection hole, and the other end of the plug rod extends into the slot.

[0012] The slot is a vertically extending slot that limits the swing angle between the load-bearing frame and the movable slide rail.

[0013] The inner side of the load-bearing frame extends outward to form a front connecting platform. The front end of the cabinet is connected to the bottom by a front connecting rod, and the front connecting platform is inserted and fixed inside the front connecting rod. The bottom of the load-bearing frame extends downward to form a lower connecting platform, and the support legs are installed on the lower connecting platform.

[0014] The inner end of the drive arm is provided with a limiting groove, and the load-bearing frame is provided with a connecting platform. When the drive arm swings down, the connecting platform is locked in the limiting groove.

[0015] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.

[0016] The support feet automatically switch off the ground when never stepped on, ensuring that the drawer is separated from the ground during sliding or when there is no load, thus avoiding wear and scratches between the support feet and the ground.

[0017] Ensure smooth and unobstructed opening and closing of drawers to improve user convenience.

[0018] The support feet provide stable support when stepped on by the user, ensuring stability and reliability during use and improving the safety of the platform. Attached Figure Description

[0019] Figure 1 This is a rendering of the final assembly of this utility model.

[0020] Figure 2 This is a schematic diagram of the internal structure of the hidden part of the cabinet in this utility model.

[0021] Figure 3 This is a cross-sectional view of the tension device and the load-bearing frame in this utility model.

[0022] Figure 4 This is a cross-sectional view of the lifting seat and the movable slide rail in this utility model.

[0023] Figure 5 This is a schematic diagram of the bottom structure of the load-bearing frame in this utility model.

[0024] Figure 6 This is a structural schematic diagram of the support legs and load-bearing frame in this utility model.

[0025] Figure 7 This is a structural assembly drawing of the load-bearing frame and the lifting seat in this utility model. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings. A drawer lifter includes a static slide rail fixed to a cabinet body 1 and a movable slide rail 2 slidably mounted thereon, wherein a load-bearing frame 4 is installed at the front end of the movable slide rail 2;

[0027] The bottom of the load-bearing frame 4 extends downward and is equipped with support legs 5 that connect to the ground;

[0028] The bottom of the load-bearing frame 4 is provided with an active area 9, and the front end of the movable slide rail 2 is installed in the active area 9; a lifting seat 3 is hinged inside the load-bearing frame 4, and a drive arm 31 extends outward from the front end of the lifting seat 3, with the bottom of the drive arm 31 bearing on the movable slide rail 2.

[0029] A tension device 6 is provided between the load-bearing frame 4 and the lifting seat 3. The tension device 6 pulls the drive arm 31 to swing downward, pushing the load-bearing frame 4 to tilt upward, forcing the bottom of the support leg 5 to leave the ground.

[0030] The load-bearing frame 4 has a clearance groove 41, and hinge seats 42 are provided on both sides of the clearance groove 41. The drive arm 31 has hinge shafts 32 on both sides, and the hinge shafts 32 are rotatably installed in the hinge seats 42.

[0031] The tension device 6 includes a first spring column 61 located on both sides of the bottom of the lifting seat 3 and a second spring column 62 located inside the load-bearing frame 4. The two ends of the tension spring 63 are provided with hooks, which are respectively hooked onto the first spring column 61 and the second spring column 62. The tension spring 63 generates tension, which pulls the drive arm 31 to swing downward.

[0032] The bottom of the load-bearing frame 4 is provided with a fastening groove 43, and the elastic hook 21 provided on the top of the movable slide rail 2 is inserted into the fastening groove 43.

[0033] The load-bearing frame 4 has a through slot 44, and the movable slide rail 2 has a connection hole. A plug rod 7 is installed in the connection hole, and the other end of the plug rod 7 extends into the slot 44.

[0034] The slot 44 is a vertically extending slot that limits the swing angle between the load-bearing frame 4 and the movable slide rail 2.

[0035] The inner side of the load-bearing frame 4 extends outward to form a front connecting platform 45. The front end of the cabinet 1 is connected to the bottom by a front connecting rod 8, and the front connecting platform 45 is inserted and fixed inside the front connecting rod 8. The bottom of the load-bearing frame 4 extends downward to form a lower connecting platform 46, and the support leg 5 is installed on the lower connecting platform 46.

[0036] The inner end of the drive arm 31 is provided with a limiting groove 33, and the load-bearing frame 4 is provided with a connecting platform 47. When the drive arm 31 swings down, the connecting platform 47 is locked in the limiting groove 33.

[0037] Working principle: In this case, a load-bearing frame is installed at the front end of the movable slide rail. The support legs extending downward from the bottom of the load-bearing frame connect to the ground to support the cabinet of the step platform. When the step platform is in the storage state, there is no user stepping on the load-bearing frame, i.e., no external weight pressing down. Under the pull of the tensioning device, the drive arm inside the lifting seat presses its bottom against the movable slide rail, lifting the entire load-bearing frame away from the movable slide rail. The load-bearing frame tilts upward, forcing the bottom of the support legs off the ground.

[0038] The tensioning device includes a first spring column located on both sides of the bottom of the lifting seat and a second spring column located inside the load-bearing frame. The hooks at both ends of the tension spring are hooked onto the first and second spring columns respectively. The tension spring generates tension, which constantly pulls the drive arm downward. The lifting seat rotates through the hinge point of its hinge shaft, ensuring that the load-bearing frame is always tilted upward and that the bottom of the support foot is always far away from the ground when no external force is applied.

[0039] When the platform needs to be used, the user pulls it out, and the moving slide rail slides along the stationary slide rail. At this time, the platform is still unloaded, and the support legs maintain a certain distance from the ground under the tension of the springs. The support legs do not scrape the ground when sliding.

[0040] The support legs automatically lift off the ground when there is no load or when the drawer is folded up. This eliminates concerns about friction between the legs and the floor during drawer opening and closing, preventing jamming and abnormal sliding caused by resistance. This ensures smooth and unobstructed sliding, making it especially suitable for users with less strength. The simple and convenient operation enhances the user experience. Furthermore, the automatic lifting design of the support legs effectively protects the floor from scratches, reducing wear and tear on both the floor and the support legs, and effectively extending their lifespan.

[0041] When a user steps onto the platform, their weight is directly supported by the load-bearing frame, causing the entire frame to press down. This pressure overcomes the tension of the springs, causing the frame to swing downwards. A slot within the frame connects to a rod on the movable slide rail. This slot is a vertically extending groove that restricts the frame's swing to within its designated area, thus limiting the swing angle between the frame and the slide rail. Once the frame reaches its maximum swing angle, it comes to a stop, and the supporting legs contact the ground, providing support. At this point, the user can safely use the platform. The system offers high stability and safety, ensuring the platform will not sway or tilt during use, preventing falls due to insufficient support, as is common in existing technologies. This design is suitable for heavier users or those who use the platform frequently.

[0042] By utilizing the coordinated operation of a tensioning device, a drive arm, and a load-bearing frame, this device boasts a simple structure, facilitating user manufacturing and enhancing product competitiveness. When the user leaves and no longer needs the platform, the tensioning device automatically lifts the support legs, forcing them off the ground. When the user needs to use the platform, the support legs maintain a stable and secure connection to the ground. The support legs automatically switch between modes suitable for actual use, ensuring smooth opening and closing while maintaining safety and stability during operation. This enhances the overall safety of the platform and improves the user experience, making it suitable for widespread adoption.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A drawer lift, characterized in that: It includes a static slide rail fixed on the cabinet (1) and a movable slide rail (2) slidably mounted on it, wherein a load-bearing frame (4) is installed at the front end of the movable slide rail (2). The bottom of the load-bearing frame (4) extends downward and is equipped with support legs (5) that connect to the ground; The bottom of the load-bearing frame (4) is provided with an active area (9), and the front end of the movable slide rail (2) is installed in the active area (9); a lifting seat (3) is hinged inside the load-bearing frame (4), and a drive arm (31) extends outward from the front end of the lifting seat (3), and the bottom of the drive arm (31) is pressed on the movable slide rail (2). A tension device (6) is provided between the load-bearing frame (4) and the lifting seat (3). The tension device (6) pulls the drive arm (31) to swing downward, pushes the load-bearing frame (4) to tilt upward, and forces the bottom of the support foot (5) to leave the ground.

2. The drawer lift according to claim 1, characterized in that: The load-bearing frame (4) has a clearance groove (41) inside, and hinge seats (42) are provided on both sides of the clearance groove (41). The drive arm (31) has hinge shafts (32) on both sides, and the hinge shafts (32) are rotatably installed in the hinge seats (42).

3. The drawer lift according to claim 1, characterized in that: The tension device (6) includes a first spring column (61) located on both sides of the bottom of the lifting seat (3) and a second spring column (62) located inside the load-bearing frame (4). The ends of the tension spring (63) are provided with hooks, which are hooked onto the first spring column (61) and the second spring column (62) respectively. The tension spring (63) generates tension, which pulls the drive arm (31) to swing downward.

4. A drawer lift according to claim 1, characterized in that: The load-bearing frame (4) has a buckle groove (43) at the bottom, and the elastic hook (21) provided on the top of the sliding rail (2) is inserted into the buckle groove (43).

5. A drawer lift according to claim 1, characterized in that: The load-bearing frame (4) has a through slot (44), and the movable slide rail (2) has a connection hole. A plug rod (7) is installed in the connection hole, and the other end of the plug rod (7) extends into the slot (44).

6. A drawer lift according to claim 5, characterized in that: The slot (44) is a vertically extending slot that limits the swing angle between the load-bearing frame (4) and the movable slide rail (2).

7. A drawer lift according to claim 1, characterized in that: The inner side of the load-bearing frame (4) extends outward to form a front connecting platform (45). The front end of the cabinet (1) is connected to the bottom by a front connecting rod (8). The front connecting platform (45) is inserted and fixed inside the front connecting rod (8). The bottom of the load-bearing frame (4) extends downward to form a lower connecting platform (46). The support leg (5) is installed on the lower connecting platform (46).

8. A drawer lift according to claim 1, characterized in that: The inner end of the drive arm (31) is provided with a limiting groove (33), and the load-bearing frame (4) is provided with a connecting platform (47). When the drive arm (31) swings down, the connecting platform (47) is locked in the limiting groove (33).

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