Power mechanism for lifting cupboard

Abstract

A power mechanism for a lifting cabinet comprises a bottom shell and a face cover, a containing cavity is formed between the bottom shell and the face cover, a first worm gear and a second worm gear are installed in the containing cavity, a worm is installed between the first worm gear and the second worm gear and meshed with the first worm gear and the second worm gear respectively, the side wall of the bottom shell extends outwards to form a motor base, and the motor base is connected with the motor base. The driving motor is installed on the motor base and provided with a driving shaft which extends into the containing cavity to be connected with the worm and drives the worm to rotate. The steel wire hoisting mechanism has the advantages that a transmission structure that the worm is meshed with the worm gear is adopted, the power transmission process is more stable through matching of the worm and the worm gear, and the common problems of shaking and instability in an existing steel wire hoisting mechanism can be effectively avoided. The stability of the whole system is further enhanced through the matched design of a worm gear, a bevel gear and a ball, and it is ensured that the cabinet is kept stable and quiet in the lifting process.

Description

Technical Field

[0001] The utility model relates to an electric lifting cabinet accessory, in particular to a power mechanism for the lifting cabinet. Background Art

[0002] In existing technology, lift cabinets widely use wire rope winches as a power source. These mechanisms typically use a motor to wind or unwind a wire rope, thereby achieving the lift function of the cabinet. Due to their simple structure and low cost, wire rope winches are widely used in various lifting devices, including lift cabinets. However, this technical solution has some significant drawbacks in practical applications:

[0003] 1. Wire ropes are prone to wear and tear over long periods of use, especially with frequent lifting operations. A broken wire rope not only affects the normal operation of the lift cabinet but can also cause safety accidents. Furthermore, wire rope replacement and maintenance are complex and require specialized personnel, increasing maintenance costs.

[0004] 2. Because the wire hoist mechanism relies on the winding and tensioning of the wire rope to control lifting and lowering, the elasticity and winding method of the wire rope can easily cause shaking and instability during the lifting process. This instability can cause noise during the cabinet lifting process, affecting the user experience and potentially causing damage to items inside the cabinet.

[0005] 3. The wire hoisting mechanism requires a certain amount of space to place the hoisting device and the winding part of the wire rope, which makes the overall structure of the lifting cabinet relatively bulky and occupies a large installation space, which is not conducive to application in small kitchens or occasions that require a compact design.

[0006] 4. The load-bearing capacity of a wire rope is limited by its material and diameter. With age, its load-bearing capacity gradually decreases. This means that the wire rope winch mechanism may not provide sufficient power when handling heavy cabinets or during frequent use, thus affecting the reliability of the lifting function. Therefore, further improvements are necessary. Utility Model Content

[0007] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a power mechanism for lifting cabinets with simple structure, easy use, long service life, stable operation and high efficiency.

[0008] The purpose of the utility model is achieved by the following manner: a power mechanism for lifting cabinets, comprising a bottom shell and a face mask, a receiving cavity provided between the bottom shell and the face mask, a first worm gear and a second worm gear installed in the receiving cavity, a worm installed between the first worm gear and the second worm gear, the worm gear meshing with the first worm gear and the second worm gear respectively, a motor base extending outward from the side wall of the bottom shell, a drive motor installed on the motor base, the drive motor provided with a drive shaft extending into the receiving cavity to connect with the worm gear and drive the same to rotate;

[0009] Bearing seats are provided on both sides of the accommodating cavity, and a transmission shaft is horizontally installed in the bearing seat through bearings. A first bevel gear and a second bevel gear are provided on the transmission shaft. The first bevel gear and the second bevel gear are respectively engaged with the first bevel gear and the second bevel gear at the bottom of the first worm gear and the second worm gear.

[0010] Furthermore, a gear rack is fixedly installed in the accommodating cavity, and a first rotating shaft and a second rotating shaft are provided on the gear rack. The first worm gear and the second worm gear are rotatably mounted on the first rotating shaft and the second rotating shaft.

[0011] Furthermore: a positioning hole is also provided in the accommodating cavity, and the worm is rotatably installed in the positioning hole.

[0012] Furthermore: the worm is arranged on the driving shaft of the driving motor, and the two are formed in one piece.

[0013] Furthermore: In the bottom shell, a number of positioning recessed holes are arranged around the rotation centers of the first worm gear and the second worm gear, and balls are installed in the positioning recessed holes. Correspondingly, an annular support groove is provided on the side of the first worm gear and the second worm gear facing the positioning recessed holes, and the balls are located in the positioning recessed holes and the annular support groove and roll.

[0014] Furthermore: the transmission shaft extends outward from both sides of the bottom shell and the mask and is synchronously connected to the lifting device of the lifting cabinet.

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

[0016] 2. This utility model utilizes a worm-wheel meshing transmission structure. This combination of worm and worm wheel ensures smooth power transmission, effectively avoiding the wobble and instability common in existing wire winches. The coordinated design of the worm wheel, bevel gear, and ball bearing further enhances the stability of the entire system, ensuring smooth and quiet cabinet lifting.

[0017] 3. Because this utility model uses a mechanical transmission method of worm, worm wheel and gear, it reduces the wear and tear of traditional wire ropes during the lifting process and extends the service life of the device. At the same time, the worm and worm wheel have a simple and strong structure and low maintenance costs. There is no need for frequent component replacement during daily use, which reduces the maintenance burden on users.

[0018] 4. By using a worm and worm gear transmission method, this utility model can achieve precise control of the cabinet lifting height, avoiding the inconsistent lifting problem existing in traditional wire winch mechanisms. This precise control feature allows users to better adjust the cabinet height during use to meet different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the general assembly effect diagram of the utility model.

[0020] Figure 2 、 3 This is a structural exploded view of the utility model.

[0021] Figure 4 This is an exploded view of the structure behind the hidden bottom shell and mask in this utility model.

[0022] Figure 5 This is a cross-sectional view of the structure of the utility model. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings. A power mechanism for a lifting cabinet includes a bottom shell 1 and a face mask 2. A receiving chamber 3 is provided between the bottom shell 1 and the face mask 2. A first worm gear 4 and a second worm gear 5 are mounted within the receiving chamber 3. A worm 6 is mounted between the first and second worm gears 4 and 5, meshing with the first and second worm gears 4 and 5, respectively. A motor base 7 extends outward from the sidewall of the bottom shell 1. A drive motor 71 is mounted on the motor base 7. The drive motor 71 is provided with a drive shaft 72 that extends into the receiving chamber 3, connects to the worm 6, and drives the worm 6 to rotate.

[0024] Bearing seats 31 are provided on both sides of the accommodating chamber 3, and a transmission shaft 83 is horizontally installed in the bearing seat 31 through a bearing 8. A first bevel gear 81 and a second bevel gear 82 are provided on the transmission shaft 83. The first bevel gear 81 and the second bevel gear 82 are respectively engaged with the first bevel gear 41 and the second bevel gear 42 at the bottom of the first worm gear 4 and the second worm gear 5.

[0025] In one embodiment, a gear rack 9 is fixedly installed in the accommodating chamber 3 , and a first rotating shaft 91 and a second rotating shaft 92 are provided on the gear rack 9 . The first worm gear 4 and the second worm gear 5 are rotatably mounted on the first rotating shaft 91 and the second rotating shaft 92 .

[0026] In one embodiment, a positioning hole 32 is further provided in the accommodating cavity 3 , and the worm 6 is rotatably installed in the positioning hole 32 .

[0027] In one embodiment, the worm 6 is disposed on the drive shaft 72 of the drive motor 71 , and the two are integrally formed.

[0028] In one embodiment: In the bottom shell 1, a plurality of positioning recessed holes 33 are provided around the rotation centers of the first worm gear 4 and the second worm gear 5, and balls 34 are installed in the positioning recessed holes 33. Correspondingly, an annular support groove 35 is provided on the side of the first worm gear 4 and the second worm gear 5 facing the positioning recessed holes 33, and the balls 34 are located in the positioning recessed holes 33 and the annular support groove 35 and roll.

[0029] In one embodiment, the transmission shaft 83 extends outward from both sides of the bottom shell 1 and the mask 2 and is synchronously connected to the lifting device of the lifting cabinet.

[0030] This utility model relates to a power mechanism for lifting cabinets. Its main working principle is based on a mechanical transmission system of a worm and worm gear. Driven by a motor, it achieves smooth lifting of the cabinet. The following is a detailed description of the working principle and technical advantages of this power mechanism:

[0031] When the user turns on the switch of the lifting cabinet, the drive motor 71 mounted on the motor base starts to work. The drive motor transmits power to the worm 6 through its drive shaft 72. In the present utility model, the worm and the drive shaft are integrally formed, ensuring efficient power transmission and simplifying the device structure.

[0032] The worm 6 is located within the accommodating chamber 3 and meshes with the first worm gear 4 and the second worm gear 5, respectively. As the worm rotates, the helical meshing between the worm and the worm gear drives the worm gear's rotation. Due to the large transmission ratio between the worm and worm gear, this design not only provides sufficient power transmission but also significantly reduces rotational speed, increasing the system's output torque and ensuring smooth cabinet lifting and lowering. Furthermore, the worm gear's reduction transmission mechanism features a self-locking function, effectively preventing the cabinet from falling.

[0033] Furthermore, in this case, the first worm gear 4 and the second worm gear 5 are connected to the first bevel gear disc 41 and the second bevel gear disc 42 at their bottoms, respectively. When the worm gear rotates, it drives the first bevel gear 81 and the second bevel gear 82 meshing with it to rotate. The bevel gears are mounted on a transmission shaft 83, which passes horizontally through the accommodating cavity 3 and is supported by the bearing 8 in the bearing seat 31 to achieve smooth rotation. The transmission ratio is further increased by the transmission of the bevel gear disc and the bevel gears, thereby converting the high speed and low torque of the motor into a low speed and high torque output of the transmission shaft, providing a stable power input for the lifting mechanism of the lifting cabinet.

[0034] Furthermore, in order to achieve a smooth and vibration-free lifting process, the positioning recessed hole 33 and the ball bearing 34 provided in the bottom shell 1 cooperate with the annular support groove 35 to further ensure the axial positioning and stability of the worm gear, prevent displacement in any direction, and enhance the stability of the system.

[0035] Compared to traditional technologies, the power mechanism of this utility model achieves highly stable lifting and lowering operations through the efficient meshing transmission of the worm and worm wheel. The introduction of a self-locking function in the worm structure prevents accidental sliding due to motor stalling during the lifting process. This precise control allows users to adjust the cabinet to the desired height and maintain a stable position.

[0036] At the same time, the utility model utilizes the high transmission ratio between the worm and the worm wheel to effectively convert the high-speed rotation of the motor into a low-speed, high-torque output of the worm wheel. At the same time, the drive shaft is connected to the first worm wheel and the second worm wheel through the first and second bevel gears, respectively, so that the power of the drive motor can drive the drive shaft to move in parallel through two reduction mechanisms, thereby driving the heavy cabinet to be raised and lowered. This efficient power transmission system can not only provide sufficient lifting force, but also extend the service life of the entire device and reduce mechanical wear. In dual power transmission, when one of the channels fails, the other channel can still operate normally, avoiding the hidden danger of rapid falling of the cabinet during use.

[0037] In summary, the present invention can achieve smooth, efficient, low-noise and high-stability lifting operations of lifting cabinets through optimized mechanical transmission structure and precise component design, so it can be widely promoted and used.

[0038] 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 to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A power mechanism for lifting cabinets, characterized by: It comprises a bottom shell (1) and a mask (2), a receiving chamber (3) is provided between the bottom shell (1) and the mask (2), a first worm gear (4) and a second worm gear (5) are installed in the receiving chamber (3), a worm (6) is installed between the first worm gear (4) and the second worm gear (5), and the worm (6) is meshed with the first worm gear (4) and the second worm gear (5) respectively, a motor seat (7) is extended outward from the side wall of the bottom shell (1), a driving motor (71) is installed on the motor seat (7), and the driving motor (71) is provided with a driving shaft (72) extending into the receiving chamber (3) to be connected with the worm gear (6) and drive the worm gear (6) to rotate; Bearing seats (31) are provided on both sides of the accommodating cavity (3), a transmission shaft (83) is transversely installed in the bearing seat (31) through a bearing (8), and a first bevel gear (81) and a second bevel gear (82) are provided on the transmission shaft (83), and the first bevel gear (81) and the second bevel gear (82) are respectively engaged with the first bevel gear (41) and the second bevel gear (42) at the bottom of the first worm gear (4) and the second worm gear (5).

2. The power mechanism for a lifting cabinet according to claim 1, characterized in that: A gear rack (9) is also fixedly installed in the accommodating chamber (3), and a first rotating shaft (91) and a second rotating shaft (92) are provided on the gear rack (9), and the first worm gear (4) and the second worm gear (5) are rotatably mounted on the first rotating shaft (91) and the second rotating shaft (92).

3. The power mechanism for a lifting cabinet according to claim 1, characterized in that: A positioning hole (32) is also provided in the accommodating cavity (3), and the worm (6) is rotatably mounted in the positioning hole (32).

4. A power mechanism for a lifting cabinet according to claim 1 or 3, characterized in that: The worm (6) is arranged on the drive shaft (72) of the drive motor (71), and the two are formed integrally.

5. The power mechanism for a lifting cabinet according to claim 1, characterized in that: In the bottom shell (1), a plurality of positioning recessed holes (33) are provided around the rotation centers of the first worm gear (4) and the second worm gear (5), and balls (34) are installed in the positioning recessed holes (33). Correspondingly, an annular support groove (35) is provided on the side of the first worm gear (4) and the second worm gear (5) facing the positioning recessed holes (33), and the balls (34) are located in the positioning recessed holes (33) and the annular support groove (35) and roll.

6. The power mechanism for a lifting cabinet according to claim 1, characterized in that: The transmission shaft (83) extends outward from both sides of the bottom shell (1) and the face mask (2) and is synchronously connected to the lifting device of the lifting cabinet.

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