Adjustable damping rotating mechanism of spa bed handrail

Abstract

The utility model discloses a kind of adjustable damping rotating mechanism of SPA bed handrail, belong to cosmetology and physiotherapy equipment technical field.Aiming at the angle adjustment gear limited, operation is complicated, easy to shake and there is hidden danger problem existing in the current SPA bed handrail adopts index pin structure.The mechanism includes handrail mounting plate, rotating frame assembly, controllable gas spring, fixed rotating shaft assembly and rotating assembly;Handrail mounting plate top installs handrail pillow, rotating frame assembly is hinged with handrail mounting plate upper and lower support plate, controllable gas spring is located between the two and is equipped with handle switch to adjust locking height;Rotating assembly contains plane thrust bearing and self-locking nut, can realize horizontal arbitrary angle's stay and damping adjustable, cooperate nylon friction plate can reduce clearance shake and wear, rotating limiting column and buffer rubber sleeve can limit rotation range and provide buffer.The mechanism is used for the height and horizontal angle adjustment of SPA bed handrail, improves the regulation flexibility, operation convenience and use stability.

Description

Technical Field

[0001] This utility model relates to the field of beauty and physiotherapy equipment technology, and in particular to an adjustable damping rotation mechanism for the armrests of a SPA bed. Background Technology

[0002] A SPA bed is a professional bed designed specifically for spas, massage parlors, and beauty salons. It comes in various types and functions to suit different needs. However, some existing SPA beds still have the following problems during use: When using some SPA beds, the stability and flexibility of the armrest components directly affect the user's experience and the operator's convenience. This is especially true in delicate operations such as manicures and massages, where the flexibility and stability of the armrest's position adjustment are crucial. Currently, most SPA beds with manual rotation adjustment functions use a type of indexing pin limiter design for their armrests. This design uses indexing pins to cooperate with pin holes at different angles to achieve fixed angle adjustments. This type of structure usually only provides a limited number of fixed angle positions, making it impossible to achieve arbitrary angle stops according to actual usage needs and difficult to adapt to diverse operating postures and usage scenarios. Meanwhile, this type of indexing pin structure requires the operator to use both hands, one hand pulling the indexing pin and the other hand pushing or pulling the handrail, which is cumbersome and inconvenient. In addition, there is an unavoidable assembly gap between the indexing pin and the pin hole, which makes the handrail prone to shaking during use. This poses a significant safety hazard in delicate operations such as manicures and may cause accidental injury to the user.

[0003] To address the aforementioned issues, this utility model document proposes an adjustable damping rotation mechanism for the armrests of a SPA bed. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of existing SPA bed armrests, which use indexing pin structures for locking, have limited angle adjustment ranges, require both hands for operation, are cumbersome, and are prone to gaps that cause the armrests to wobble, posing safety hazards for delicate operations such as manicures. Therefore, this utility model proposes an adjustable damping rotation mechanism for SPA bed armrests.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An adjustable damping rotation mechanism for a SPA bed armrest includes: The armrest mounting plate and the rotating frame assembly, wherein an armrest cushion is fixedly mounted on the top of the armrest mounting plate; The rotating frame assembly consists of a support part and a sleeve part. An upper support plate and a lower support plate are hinged between the support part of the rotating frame assembly and the handrail mounting plate. The upper support plate is located above the lower support plate. A controllable gas spring is disposed between the upper support plate and the lower support plate to provide support force for adjusting the height of the armrest cushion. A fixed rotating shaft assembly is provided, which consists of a mounting plate and a bottom shaft body that are fixedly connected. The mounting plate is used to connect with the leather cushion of the SPA bed backrest, and the bottom shaft body cooperates with the sleeve part of the rotating frame assembly. A rotating assembly is used to realize the rotational engagement between the bottom shaft of the fixed rotating shaft assembly and the sleeve part of the rotating frame assembly, so as to complete the horizontal angle adjustment of the armrest cushion. The rotating component provides adjustable rotational damping, allowing the armrest cushion to remain stably stationary at any angle on a horizontal surface.

[0006] In one possible design, one end of the cylinder of the controllable gas spring is hinged to the support portion of the rotating frame assembly, and its hinge point with the lower support plate is on the same hinge axis. One end of the piston rod of the controllable gas spring is fixedly connected to a rotating frame, and the rotating frame is hinged to the upper support plate near the handrail mounting plate.

[0007] In one possible design, the rotating assembly includes a 51101 planar thrust bearing disposed at the bottom end of the sleeve portion of the rotating frame assembly. The 51101 planar thrust bearing is embedded in a groove at the bottom end of the sleeve portion of the rotating frame assembly. The bottom shaft of the fixed rotating shaft assembly passes through the rotating frame assembly and the 51101 planar thrust bearing. An M12 self-locking nut is threaded onto the end of the bottom shaft of the fixed rotating shaft assembly. The M12 self-locking nut cooperates with the bottom end of the sleeve portion of the rotating frame assembly, thereby providing adjustable rotational damping by adjusting the tightness of the M12 self-locking nut.

[0008] In one possible design, a nylon friction plate is fitted on the outer wall of the bottom shaft of the fixed rotating shaft assembly. The nylon friction plate is located at the top of the sleeve portion of the rotating frame assembly to reduce frictional loss between components.

[0009] In one possible design, a rotation limiting post is fixedly installed on the top of the support portion of the rotating frame assembly, and two positioning posts are fixedly installed on the bottom of the mounting plate of the fixed rotating shaft assembly. Both positioning posts abut against the rotation limiting post to limit the horizontal rotation range of the armrest cushion.

[0010] In one possible design, the outer wall of the rotating limiting post is fitted with a PVC buffer sleeve, which cooperates with the two positioning posts to provide cushioning when the rotating limiting post contacts and is limited by the corresponding positioning post.

[0011] In one possible design, the controllable gas spring further includes a gas spring handle switch disposed on one side of the rotating frame. The gas spring handle switch is used to operate the controllable gas spring to achieve height adjustment and locking of the armrest cushion.

[0012] In one possible design, the upper support plate and the lower support plate are adjustable by rotation within a range of 0-29° to achieve changes in the vertical height of the armrest cushion.

[0013] In one possible design, the two positioning posts limit the horizontal rotation range of the rotating frame assembly to 0-90°.

[0014] In this application, when the height of the armrest cushion needs to be adjusted, the operator can activate the gas spring handle switch. At this time, the piston rod of the controllable gas spring can extend and retract under the action of external force. Simultaneously, the operator can push the armrest cushion up and down. The armrest mounting plate, the rotating frame assembly, and the upper and lower support plates form a parallelogram structure, which can adjust the height of the armrest cushion by using the rotating frame assembly as a base point, thereby smoothly changing the vertical position of the armrest cushion. When the armrest cushion reaches the desired height, the gas spring handle switch is released, and the controllable gas spring locks the current length, maintaining the support force at the set state and fixing the height of the armrest cushion. When horizontal angle adjustment is required, the operator only needs to move the armrest pad. At this time, the bottom shaft of the fixed rotating shaft assembly can rotate inside the sleeve of the rotating frame assembly to complete the horizontal position adjustment of the armrest pad. During this process, the planar thrust bearing embedded at the bottom of the sleeve bears the axial load and ensures smooth rotation. At the same time, the operator can use a wrench to adjust the tightness of the M self-locking nut under the rotating frame assembly, and also change the clamping force between the sleeve and the thrust bearing and the bottom shaft, thereby providing adjustable rotational damping. This damping force gives the handrail a moderate resistance when rotating and allows it to stay stably at any angle. During horizontal rotation, the rotation limit post on the rotating frame assembly will rotate accordingly. When the rotation limit post contacts the corresponding positioning post, the rotational movement of the entire bracket is restricted, thereby defining the horizontal rotation range of the armrest cushion. The PVC buffer sleeve on the outside of the rotation limit post can effectively buffer the impact when the limit contact occurs, which can reduce noise and protect the components. Through the synergistic effect of the above processes, the mechanism achieves flexible adjustment and reliable locking of the armrest cushion in vertical height, as well as damped rotation and angle limiting in horizontal plane, meeting various posture requirements during use.

[0015] Beneficial effects: The adjustable damping rotation mechanism for SPA bed armrests described in this utility model enables flexible adjustment and reliable locking of the vertical height of the armrest cushion. Through the parallelogram structure formed by the controllable gas spring, upper support plate, lower support plate and rotating frame assembly, the operator only needs to turn the gas spring handle switch to push the armrest cushion to rise and fall. The adjustment process is smooth, and the height is locked after releasing the switch. It meets the height needs of users of different heights and in different operating scenarios, and the operation is convenient and efficient. In this utility model, an adjustable damping rotation mechanism for SPA bed armrests solves the problem that traditional structures cannot stop at any angle. By using the cooperation of a planar thrust bearing and a self-locking nut, it not only ensures the smoothness of the armrest cushion when rotating horizontally, but also changes the rotation damping by adjusting the tightness of the self-locking nut, so that the armrest has a moderate resistance during rotation and can stop stably at any horizontal angle, adapting to a variety of usage postures. In this utility model, the adjustable damping rotation mechanism for the armrest of a SPA bed eliminates the gap and wobbling problem of the traditional indexing pin structure. Through the tight cooperation between the nylon friction plate and each component, the assembly gap between the parts is reduced, avoiding the wobbling phenomenon during the use of the armrest, significantly improving the stability of the operation process, and reducing the risk of accidental injury in delicate operations such as manicure. In this utility model, the adjustable damping rotation mechanism for the armrest of a SPA bed simplifies the operation process of armrest adjustment. When adjusting the horizontal rotation of the armrest, only one hand is needed to move the armrest cushion to complete the angle adjustment, without the need for both hands, which greatly improves the convenience of operation and reduces the workload of the operator. In this utility model, the adjustable damping rotation mechanism for the armrest of a SPA bed uses nylon friction pads to reduce frictional wear between parts, and PVC buffer sleeves to effectively buffer impacts during rotational limiting, which reduces noise generation, protects the parts, ensures the smoothness of the rotation process, and avoids abnormal noise problems. In this invention, the mechanism allows for flexible adjustment of the vertical height and horizontal angle of the SPA bed armrest cushion. The vertical height is supported and positioned by a controllable gas spring, while the horizontal direction is achieved by a thrust bearing and a self-locking nut, allowing the cushion to stop at any angle. The rotational damping is adjustable, effectively eliminating the swaying problem that may exist in traditional structures and reducing the risk of accidental injury. At the same time, the adjustment operation is simple and convenient, with low noise and a smooth adjustment process, comprehensively improving the user experience. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an adjustable damping rotation mechanism for a SPA bed armrest proposed in this utility model. Figure 2 This is a three-dimensional structural diagram of an adjustable damping rotation mechanism for a SPA bed armrest proposed in this utility model, taken from another perspective. Figure 3 This is a schematic diagram showing the disassembled structure of an adjustable damping rotation mechanism for a SPA bed armrest proposed in this utility model. Figure 4 This is a schematic diagram showing the adjustment range of an adjustable damping rotation mechanism for a SPA bed armrest proposed in this utility model; Figure 5 This is a schematic diagram of the horizontal adjustment state of an adjustable damping rotation mechanism for a SPA bed armrest proposed in this utility model; Figure 6 This is a schematic diagram of the vertical adjustment state structure of an adjustable damping rotation mechanism for a SPA bed armrest proposed in this utility model.

[0017] In the diagram: 1. Handrail mounting plate; 2. Handrail cushion; 3. Rotating frame assembly; 4. Upper support plate; 5. Lower support plate; 6. Controllable gas spring; 7. Fixed rotating shaft assembly; 8. Gas spring handle switch; 9. Nylon friction plate; 10. 51101 flat thrust bearing; 11. M12 self-locking nut; 12. Rotation limit post; 13. PVC buffer sleeve; 14. Positioning post. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In one embodiment: Refer to Figure 1-6 A rotating mechanism includes: a handrail mounting plate 1, a rotating frame assembly 3, a controllable gas spring 6, a fixed rotating shaft assembly 7, and a rotating assembly. In this embodiment, an armrest cushion 2 is bolted to the top of the armrest mounting plate 1. The armrest cushion 2 is made of a soft yet supportive material, providing comfortable support for the user's arms. The rotating frame assembly 3 is formed by welding a support section and a sleeve section. An upper support plate 4 and a lower support plate 5 are hinged between the support section and the armrest mounting plate 1. The upper support plate 4 is positioned directly above the lower support plate 5. Both are parallel to each other and are made of high-strength metal to ensure structural stability.

[0020] In this embodiment, a controllable gas spring 6 is provided between the upper support plate 4 and the lower support plate 5. One end of the cylinder of the controllable gas spring 6 is hinged to the support portion of the rotating frame assembly 3, and this hinge point is on the same hinge axis as the hinge point of the lower support plate 5 and the support portion, making the structure more evenly stressed. A rotating frame is welded to one end of the piston rod of the controllable gas spring 6. The rotating frame is hinged to the upper support plate 4 near the armrest mounting plate 1, so that the controllable gas spring 6 can provide stable support force for adjusting the height of the armrest cushion 2. A gas spring handle switch 8 is provided on one side of the rotating frame. By operating the gas spring handle switch 8, the extension and retraction state of the controllable gas spring 6 can be controlled, thereby realizing the height adjustment of the armrest cushion 2. After adjusting to the appropriate height, releasing the gas spring handle switch 8 can lock the height of the armrest cushion 2, making the operation convenient and efficient. The upper support plate 4 and the lower support plate 5 can be rotated and adjusted within the range of 0-29°.

[0021] In this embodiment, the fixed rotating shaft assembly 7 is composed of a mounting plate and a bottom shaft welded together. The top of the mounting plate is fixedly connected to the bottom of the SPA bed backrest cushion by bolts, so as to realize the fixed installation of the entire mechanism with the SPA bed. The bottom shaft of the fixed rotating shaft assembly 7 cooperates with the sleeve part of the rotating frame assembly 3 to provide a basic connection structure for the horizontal angle adjustment of the armrest cushion 2.

[0022] In this embodiment, the rotating assembly is used to realize the rotational engagement between the bottom shaft of the fixed rotating shaft assembly 7 and the rotating frame assembly 3. It includes a 51101 planar thrust bearing 10, which is embedded in the groove at the bottom end of the sleeve of the rotating frame assembly 3. The bottom shaft of the fixed rotating shaft assembly 7 passes through the sleeve of the rotating frame assembly 3 and engages with the 51101 planar thrust bearing 10. The bottom end of the fixed rotating shaft assembly 7 is machined with an external thread, and the threaded end passes through the 51101 planar thrust bearing 10. An M12 self-locking nut 11 is threaded on its outer wall. The M12 self-locking nut 11 abuts against the bottom end of the sleeve of the rotating frame assembly 3. By adjusting the tightness of the M12 self-locking nut 11, the fixed rotating shaft assembly 7 can be locked, and different sizes of rotational damping force can be provided to meet the different needs of users for the horizontal rotational damping of the armrest cushion 2.

[0023] This application can be used in the field of beauty and physiotherapy equipment technology, or in other fields applicable to this application.

[0024] In another embodiment: Reference Figure 2 , 3 4. An adjustable damping rotation mechanism for the armrests of a SPA bed, which is applied to the field of beauty and physiotherapy equipment technology; In this embodiment, a nylon friction plate 9 is sleeved on the outer wall of the bottom shaft of the fixed shaft assembly 7. The nylon friction plate 9 is located at the top of the sleeve of the rotating frame assembly 3, which can reduce the frictional loss between the fixed shaft assembly 7 and the rotating frame assembly 3 and extend the service life of the entire mechanism.

[0025] In this embodiment, a rotation limiting post 12 is welded and fixed to the top of the support portion of the rotating frame assembly 3, and two positioning posts 14 are welded and fixed to the bottom of the mounting plate of the fixed rotating shaft assembly 7. The two positioning posts 14 are respectively arranged on the rotation path of the rotation limiting post 12, and both can form an abutment engagement with the rotation limiting post 12. When the rotating frame assembly 3 drives the armrest cushion 2 to rotate horizontally, the rotation limiting post 12 rotates with it. When the rotation limiting post 12 abuts against one of the positioning posts 14, the armrest cushion 2 cannot continue to rotate in that direction. Similarly, when it abuts against the other positioning post 14, it achieves reverse rotation limitation, thereby completing the limitation of the horizontal rotation range of the armrest cushion 2. The two positioning posts 14 can limit the rotation range of the rotating frame assembly 3 to 0-90°.

[0026] In this embodiment, the outer wall of the rotating limiting post 12 is fitted with a PVC buffer sleeve 13. The PVC buffer sleeve 13 is adapted to the two positioning posts 14. When the rotating limiting post 12 contacts the positioning post 14 to achieve the limiting, the PVC buffer sleeve 13 can absorb the impact force of the collision and play a buffering role, avoiding damage to the parts due to rigid collision, and reducing the noise generated by the collision.

[0027] The working principle and usage process of this technical solution are as follows: When the height of the armrest cushion 2 needs to be adjusted, the operator can move the gas spring handle switch 8. At this time, the piston rod of the controllable gas spring 6 can extend and retract under the action of external force. At the same time, the operator can push the armrest cushion 2 up and down. The armrest mounting plate 1, the rotating frame assembly 3, and the upper support plate 4 and the lower support plate 5 form a parallelogram structure, which can realize the lifting and lowering adjustment of the armrest cushion 2 with the rotating frame assembly 3 as the base point, thereby smoothly changing the vertical position of the armrest cushion 2. When the armrest cushion 2 reaches the required height, the gas spring handle switch 8 is released, and the controllable gas spring 6 can lock the current length, which can maintain the support force at the set state and fix the height of the armrest cushion 2. When horizontal angle adjustment is required, the operator only needs to move the armrest pad 2. At this time, the bottom shaft of the fixed rotating shaft assembly 7 can rotate inside the sleeve of the rotating frame assembly 3 to complete the horizontal position adjustment of the armrest pad 2. During this process, the 51101 planar thrust bearing embedded at the bottom of the sleeve plays the role of bearing axial load and ensuring smooth rotation; at the same time, the operator can also use a wrench to adjust the tightness of the M12 self-locking nut under the rotating frame assembly 3, and can also change the clamping force between the sleeve and the thrust bearing and the bottom shaft, thereby providing adjustable rotational damping; this damping force makes the handrail have a moderate resistance when rotating and can stay stably at any angle; During horizontal rotation, the rotation limit post 12 on the rotating frame assembly 3 will rotate accordingly. When the rotation limit post 12 contacts the corresponding positioning post 14, the rotational movement of the entire bracket is restricted, thereby defining the horizontal rotation range of the armrest cushion 2. The PVC buffer sleeve 13 sleeved on the outside of the rotation limit post 12 can effectively buffer the impact when the limit contact is made, which can reduce noise and protect the components. Through the synergistic effect of the above processes, the mechanism achieves flexible adjustment and reliable locking of the armrest cushion 2 in vertical height, as well as damped rotation and angle limiting in horizontal plane, meeting various posture requirements during use.

[0028] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An adjustable damping rotation mechanism for the armrests of a SPA bed, characterized in that, include: Handrail mounting plate (1) and rotating frame assembly (3), wherein a handrail cushion (2) is fixedly mounted on the top of the handrail mounting plate (1). The rotating frame assembly (3) consists of a support part and a sleeve part. The support part of the rotating frame assembly (3) is hinged to the handrail mounting plate (1) with an upper support plate (4) and a lower support plate (5). The upper support plate (4) is located above the lower support plate (5). A controllable gas spring (6) is disposed between the upper support plate (4) and the lower support plate (5) to provide support force for adjusting the height of the armrest cushion (2); Fixed pivot assembly (7), which is composed of a mounting plate and a bottom shaft body fixedly connected. The mounting plate is used to connect with the backrest leather pad of the SPA bed, and the bottom shaft body cooperates with the sleeve part of the rotating frame assembly (3). Rotating assembly, the rotating assembly is used to realize the rotational engagement between the bottom shaft of the fixed rotating shaft assembly (7) and the sleeve part of the rotating frame assembly (3) to complete the horizontal angle adjustment of the armrest cushion (2); The rotating component provides adjustable rotational damping, enabling the armrest cushion (2) to remain stably stationary at any angle on the horizontal plane.

2. A SPA bed handrail adjustable damping rotating mechanism according to claim 1, characterized in that, One end of the cylinder of the controllable gas spring (6) is hinged to the support part of the rotating frame assembly (3), and its hinge point with the lower support plate (5) is on the same hinge axis. One end of the piston rod of the controllable gas spring (6) is fixedly connected to a rotating frame, and the rotating frame is hinged to the upper support plate (4) near the handrail mounting plate (1).

3. The adjustable damping rotation mechanism for a SPA bed armrest according to claim 1, characterized in that, The rotating assembly includes a 51101 planar thrust bearing (10) disposed at the bottom end of the sleeve portion of the rotating frame assembly (3). The 51101 planar thrust bearing (10) is embedded in the groove at the bottom end of the sleeve portion of the rotating frame assembly (3). The bottom shaft of the fixed rotating shaft assembly (7) passes through the rotating frame assembly (3) and the 51101 planar thrust bearing (10). The bottom shaft of the fixed rotating shaft assembly (7) is threaded with an M12 self-locking nut (11). The M12 self-locking nut (11) cooperates with the bottom end of the sleeve portion of the rotating frame assembly (3), thereby providing adjustable rotational damping by adjusting the locking degree of the M12 self-locking nut (11).

4. The adjustable damping rotation mechanism for a SPA bed armrest according to claim 3, characterized in that, The bottom shaft of the fixed rotating shaft assembly (7) is fitted with a nylon friction plate (9), which is located at the top of the sleeve of the rotating frame assembly (3) to reduce frictional loss between components.

5. The adjustable damping rotation mechanism for a SPA bed armrest according to claim 4, characterized in that, The top of the support of the rotating frame assembly (3) is fixedly installed with a rotation limiting post (12), and the bottom of the mounting plate of the fixed rotating shaft assembly (7) is fixedly installed with two positioning posts (14). The two positioning posts (14) abut against the rotation limiting post (12) to limit the horizontal rotation range of the armrest cushion (2).

6. The adjustable damping rotation mechanism for a SPA bed armrest according to claim 5, characterized in that, The outer wall of the rotating limiting post (12) is fitted with a PVC buffer sleeve (13), which cooperates with the two positioning posts (14) to provide buffering when the rotating limiting post (12) contacts and limits the corresponding positioning post (14).

7. The adjustable damping rotation mechanism for a SPA bed armrest according to claim 2, characterized in that, The controllable gas spring (6) also includes a gas spring handle switch (8) disposed on one side of the rotating frame. The gas spring handle switch (8) is used to control the controllable gas spring (6) to realize the height adjustment and locking of the armrest cushion (2).

8. The adjustable damping rotation mechanism for a SPA bed armrest according to claim 1, characterized in that, The upper support plate (4) and the lower support plate (5) can be rotated and adjusted within the range of 0-29° to achieve the vertical height change of the armrest cushion (2).

9. A SPA bed handrail adjustable damping rotating mechanism according to claim 5, characterized in that, The two positioning posts (14) limit the horizontal rotation range of the rotating frame assembly (3) to 0-90°.

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