Rotary bed

Abstract

The utility model relates to a rotating bed which structurally comprises a supporting column, a lower box body arranged on the supporting column, an upper box body arranged on the lower box body and a bed body arranged on the upper box body. A main shaft is arranged in the lower box body in a penetrating mode, and the two ends of the main shaft both protrude out of the lower box body. A main transmission gear is connected to each of the two ends of the main shaft, transmission wheels matched with the main transmission gears are arranged at the left end and the right end of the lower box body, two inner gear rings are symmetrically arranged at the lower end of the upper box body, and the two inner gear rings are matched with the transmission wheels at one end of the lower box body respectively. According to the utility model, the main transmission gear on the main shaft is meshed with the gear ring and the transmission wheel, and the bed body is directly driven by the second rotary driving piece, so that the free rotation of the bed body in the horizontal direction and the vertical direction is realized, and the applicability and the flexibility of the bed body are improved.

Description

Technical Field

[0001] This utility model relates to a bed frame, specifically a rotating bed. Background Technology

[0002] In modern medical care, rehabilitation nursing, and home life, the rotation and adjustment functions of beds are of great significance for improving patient comfort, facilitating nursing procedures, and meeting specific treatment needs. However, current rotating bed designs on the market generally suffer from some technical and functional limitations, affecting their widespread application and user experience.

[0003] First, most existing rotating bed designs only support limited angle adjustments at the head or feet, failing to achieve full-range, multi-angle free rotation. This design restricts flexibility during care, treatment, or patient self-adjustment, reducing the equipment's applicability and comfort. Second, some rotating beds cannot reliably maintain a specific angle after rotation, or their fixing mechanisms are complex and cumbersome to operate, easily leading to accidental loosening or wobbling during use. This not only affects the bed's stability and safety but may also cause unnecessary inconvenience and risks to patients. Furthermore, many rotating beds employ complex mechanical structures or electrical control systems to achieve rotation and fixation functions, which not only increases operational difficulty but also raises the cost and complexity of equipment maintenance. Utility Model Content

[0004] The purpose of this invention is to provide a rotating bed to solve the problems existing in the rotation angle, stability of the fixing mechanism, and ease of operation and maintenance of the current bed.

[0005] This utility model is implemented as follows: A rotary bed, the structure of which includes a support column, a lower housing mounted on the support column, an upper housing mounted on the lower housing, and a bed mounted on the upper housing; a main shaft is inserted through the lower housing, with both ends of the main shaft protruding from the lower housing; a main drive gear is connected to each end of the main shaft; a drive wheel that cooperates with the main shaft is provided at both ends of the lower housing; two internal gear rings are symmetrically arranged at the lower end of the upper housing, and each of the two internal gear rings cooperates with the drive wheel at one end of the lower housing.

[0006] Furthermore, the lower housing is cylindrical and horizontally positioned, with its axis also horizontally positioned, and the axis of the main shaft coincides with the axis of the lower housing.

[0007] Furthermore, a connecting plate for connecting the two internal gear rings is provided at the lower part of the upper housing, and the connecting plate matches the curvature of the outer wall of the lower housing.

[0008] Furthermore, a first rotary drive is provided in the lower housing, a drive gear is provided on the output shaft of the first rotary drive, and a driven gear that cooperates with it is provided on the main shaft.

[0009] Furthermore, a drive box is provided inside the lower housing, and the first rotary drive component is disposed in the drive box.

[0010] Furthermore, a second rotary drive is provided in the upper housing, a cross connector is provided on the output shaft of the second rotary drive, and a cross coupling driven disc that cooperates with it is provided at the lower end of the bed. The output shaft of the second rotary drive is perpendicular to the bed.

[0011] Furthermore, a lower groove is provided at the upper end of the upper housing, and a corresponding upper groove is provided at the lower end of the driven disc of the cross coupling. Ball bearings are filled between the upper groove and the lower groove.

[0012] Furthermore, a brake disc is provided on the main shaft, and a disc brake device is provided on the brake disc.

[0013] Furthermore, the disc brake device includes a housing, an electromagnet, an iron core, and brake pads.

[0014] Furthermore, the first rotary drive and the second rotary drive are servo motors or stepper motors.

[0015] This invention achieves free rotation of the bed in both horizontal and vertical directions through the meshing of the main transmission gear on the main shaft with the gear ring and transmission wheel, and the direct drive of the bed by the second rotary drive component. This design breaks the limitations of traditional bed rotation angles, improving the bed's applicability and flexibility.

[0016] This invention employs a high-precision gear and disc brake device to ensure the bed can be reliably fixed at any angle after rotation. The disc brake device controls the engagement and disengagement of the brake pads and brake disc by switching the electromagnet on and off, achieving high-precision braking. This fixing mechanism not only responds quickly and controls precisely, but also effectively prevents the bed from accidentally loosening or shaking during use, improving the safety and reliability of the equipment.

[0017] This invention uses the connecting plate as a key load-bearing component, which not only achieves a rigid connection between the two gear rings, but also ensures the structural stability between the upper and lower housings.

[0018] The rational layout and modular design of this utility model make the entire rotary bed structure compact, easy to assemble and maintain. The drive box not only provides stable support for the first rotary drive component, but also plays a sealing and protective role, effectively isolating the transmission system from the influence of the external environment. In addition, the ball bearing filling design simplifies the friction and wear problems of the rotating parts of the bed, reducing maintenance costs.

[0019] This invention is not only suitable for medical settings such as hospital wards and rehabilitation centers, but can also be widely applied in fields such as home care and elderly care institutions. Its flexibility and reliability enable it to meet diverse needs in different scenarios, giving it broad market application prospects. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a structural diagram without the supporting columns.

[0022] Figure 3 This is a schematic diagram of the gear mechanism between the lower and upper housings.

[0023] Figure 4 This is a structural diagram of the internal gear ring, upper housing, and bed.

[0024] Figure 5 This is a structural diagram of the internal gear ring and the upper housing.

[0025] Figure 6 This is a schematic diagram of the internal structure of the drive box.

[0026] Figure 7 This is a schematic diagram of the disc brake system.

[0027] In the diagram: 1. Support column, 2. Lower housing, 3. Upper housing, 4. Bed, 5. Main spindle, 6. Main drive gear, 7. Drive wheel, 8. Internal gear ring, 9. Connecting plate, 10. First rotary drive component, 11. Driving gear, 12. Driven gear, 13. Second rotary drive component, 14. Cross connector, 15. Cross coupling driven disc, 16. Ball bearing, 17. Brake disc, 18. Disc brake device, 19. Drive box, 181. Housing, 182. Electromagnet, 183. Iron core, 184. Brake pad, 185. Control module. Detailed Implementation

[0028] like Figure 1As shown, this utility model includes a vertically mounted support column 1, a lower housing 2 fixedly connected to the upper end of the support column 1, an upper housing 3 vertically rotatably connected to the lower housing 2, and a bed 4 horizontally rotatably connected to the upper housing 3. One end of the bed 4 is arc-shaped. The support column 1 is the supporting foundation of the entire structure and is firmly fixed to the ground or base.

[0029] like Figure 2 As shown, the lower housing 2 is cylindrical in shape, and a main shaft 5 is inserted through the lower housing 2. The axis of the main shaft 5 coincides with the axis of the lower housing 2, and both the lower housing 2 and the main shaft 5 are horizontally arranged.

[0030] like Figure 3 As shown, both ends of the main shaft 5 protrude from the lower housing 2. A main drive gear 6 is connected to each end of the main shaft 5. Six drive wheels 7 meshing with the main shaft 6 are installed at each end of the lower housing 2. Two internal gear rings 8 are symmetrically arranged at the lower end of the upper housing 3, each internal gear ring 8 meshing with the six drive wheels 7 at each end of the lower housing 2. The drive wheels 7 are fixed to the lower housing 2 and only rotate on their own axis, not revolving around the main drive gears 6.

[0031] like Figure 4 and Figure 5 As shown, a connecting plate 9 connecting the two internal gear rings 8 is provided at the lower part of the upper housing 3. This connecting plate 9 is an arc-shaped structural plate that matches the curvature of the outer wall of the lower housing 2, forming the bottom support platform of the upper housing 3. When the main shaft 5 drives the main transmission gear 6 on it to rotate, the internal gear rings 8 will generate corresponding rotational motion through the transmission wheel 7, thereby driving the upper housing 3 to rotate vertically around the axis of the lower housing 2. As a key load-bearing component, the connecting plate 9 not only realizes the rigid connection of the two internal gear rings 8, but also transmits the motion of the gear mechanism to the upper housing 3, ensuring the motion synchronization and stability of the overall structure. This integrated design structure not only ensures transmission efficiency but also improves structural rigidity, providing reliable support for the stable operation of the upper mechanism.

[0032] like Figure 6As shown, a drive housing 19 is fixedly installed inside the lower housing 2, and the drive housing 19 is sleeved on the main shaft 5. A first rotary drive component 10 is fixedly connected inside the drive housing 19, forming the support housing for the first rotary drive mechanism. A drive gear 11 is installed on the output shaft of the first rotary drive component 10; a driven gear 12, meshing with the drive gear 11, is correspondingly installed on the main shaft 5. When the first rotary drive component 10 starts, the drive gear 11 rotates synchronously with the drive shaft, transmitting power to the main shaft 5 through meshing with the driven gear 12, driving it to rotate around its axis. This gear transmission mechanism employs a high-precision tooth profile design to ensure smooth power transmission and accurate motion control. The drive housing 19, as the mounting base for the first rotary drive component 10, not only provides stable support for the drive mechanism but also acts as a seal and protector, effectively isolating the transmission system from the influence of the external environment.

[0033] A second rotary drive unit 13 is vertically installed inside the upper housing 3, and is fixedly connected to the upper end of the connecting plate 9. The output shaft of the second rotary drive unit 13 passes vertically through the top plate of the upper housing 3 and connects to the bed 4, with the output shaft of the second rotary drive unit 13 perpendicular to the bed 4. A cross connector 14 is connected to the upper end of the output shaft of the second rotary drive unit 13, and a cross coupling driven plate 15 with a cross groove is installed at the lower end of the bed 4. When the cross connector 14 is inserted into the cross groove of the cross coupling driven plate 15, a firm connection is formed between them, allowing the second rotary drive unit 13 to drive the bed 4 to rotate through the output shaft.

[0034] A circular lower groove for accommodating balls is formed at the upper end of the upper housing 3. The output shaft of the second rotary drive 13 is located at the center of this lower groove. A corresponding upper groove is formed at the lower end of the driven disc 15 of the cross coupling. Balls 16 are filled between the upper and lower grooves. The balls 16 reduce the friction between the bed 4 and the upper housing 3, improve the smoothness and accuracy of rotation, and avoid the jamming or shaking phenomena commonly found in traditional mechanical transmissions.

[0035] like Figure 1 and Figure 7As shown, a brake disc 17 is mounted on the main shaft 5, and a disc brake device 18 is mounted on the brake disc 17. The disc brake device 18 includes a housing 181, an electromagnet 182, an iron core 183, brake pads 184, and a control module 185. The housing 181 serves as the main support structure and houses an electromagnetic drive mechanism composed of the electromagnet 182 and the iron core 183. The brake pads 184 are symmetrically arranged on both sides of the brake disc 17, and their engagement and disengagement with the brake disc 17 are controlled by the on / off state of the electromagnet 182. The control module 185 integrates signal processing and drive control functions, and can precisely adjust the excitation current of the electromagnet 182 according to braking requirements to achieve linear control of braking force. This disc brake device 18 features rapid response, precise control, and smooth braking, enabling high-precision braking.

[0036] A brake disc and disc brake device (not shown) are also provided on the output shaft of the second rotary drive 13. Its structure and function are the same as those of the brake disc 17 and disc brake device 18 on the main shaft 5.

[0037] The first rotary drive component 10 and the second rotary drive component 13 are servo motors or stepper motors, etc.

Claims

1. A rotating bed, characterized by, The utility model provides a bed body is provided with the main shaft, the main transmission gear wheel, the transmission wheel, the inner toothed ring and the connecting plate, and the main shaft, the main transmission gear wheel, the transmission wheel, the inner toothed ring and the connecting plate are connected through the transmission of the power.

2. A rotating bed according to claim 1, characterised in that The lower box is cylindrical and horizontally arranged, and the axis of the lower box is horizontally arranged.

3. A rotating bed according to claim 2, characterised in that the The lower part of the upper box is provided with a connecting plate for connecting the two inner toothed rings, and the connecting plate matches the curvature of the outer wall of the lower box.

4. A rotating bed according to claim 1, characterized in that The lower box is provided with a first rotary drive, a driving gear is arranged on the output shaft of the first rotary drive, and a driven gear is arranged on the main shaft and matched with the driving gear.

5. A rotating bed according to claim 4, characterised in that The lower box is provided with a driving box, and the first rotary drive is arranged in the driving box.

6. A rotating bed according to claim 1, characterised in that The upper box is provided with a second rotary drive, a cross connecting piece is arranged on the output shaft of the second rotary drive, a cross coupling driven disc is arranged at the lower end of the bed body and matched with the cross connecting piece, and the output shaft of the second rotary drive is perpendicular to the bed body.

7. A rotating bed according to claim 6, characterised in that the The upper end of the upper box is provided with a lower groove, the lower end of the cross coupling driven disc is provided with a corresponding upper groove, and the upper groove and the lower groove are filled with balls.

8. A rotating bed according to claim 1 or 4, characterised in that A brake disc is arranged on the main shaft, and a disc brake device is arranged on the brake disc.

9. A rotating bed according to claim 8, characterised in that The disc brake device comprises a shell, an electromagnet, an iron core and a brake pad.

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