A washing and protecting massage device with bent arms and arches and a working method thereof
By using a curved arm-to-arch design and a dynamic adjustment mechanism, the problem of adapting the intelligent shampoo robot to different user head shapes has been solved, achieving better shampooing and care results and greater comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIAN TECH UNIV
- Filing Date
- 2026-04-14
- Publication Date
- 2026-07-31
AI Technical Summary
Existing intelligent hair washing robots have difficulty adapting to different head shapes, resulting in poor washing and care effects.
The design employs a curved arm against an arch, with the curved arm driven to swing via a swing mechanism. This causes the inner contour of the arched assembly to change with the swing of the curved arm, adapting to the user's outer contour. A four-bar linkage is used for limiting and adjusting the position, and combined with the lifting and lowering of the support mechanism, it ensures that the massage mechanism fits snugly against the head.
The inner side massage mechanism of the curved arm fits closely to the user's head, improving the washing and care effect and comfort, and adapting to the needs of users with different head shapes.
Smart Images

Figure CN122478337A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of washing and care equipment technology, and in particular to a washing and massage device with a curved arm against an arch and its working method. Background Technology
[0002] Intelligent hair-washing robots can adapt to various scenarios, such as serving home settings to help the elderly wash and care for their hair independently, freeing up the hands of ordinary users, and are also suitable for high-frequency operations in professional hair salons. They can also be deployed in public service venues such as community elderly care centers. However, given the different head shapes of various users, how to better adapt the intelligent hair-washing robot to each user's head shape is a crucial issue that needs to be addressed. Summary of the Invention
[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a washing and massage device with curved arms and its working method. A pair of curved arms with massage mechanisms on the inner side perform washing and massage on the user. The curved arms can swing and adjust to adapt to different washing objects.
[0004] Technical Solution: To achieve the above objectives, the present invention provides a curved arm-to-arch washing and massage device, comprising a left washing mechanism and a right washing mechanism arranged opposite to each other. Each of the two washing mechanisms is provided with a curved arm, and a massage mechanism is provided on the inner side of the curved arm. When the two curved arms are facing each other, they are assembled into an arch-shaped assembly in a split-type splicing manner. The curved arms are mounted on a movable support, which can actively rotate to drive the arch-shaped assembly to rotate around an axis and form a spherical rotation trajectory. The movable support is also provided with a swing mechanism, which can drive the curved arms to swing. The inner contour shape of the arch-shaped assembly changes with the swing of the curved arms to adapt to the outer contour shape of the object being washed and cared for.
[0005] Furthermore, both the left and right washing and care mechanisms are located inside the water tank, and a support mechanism is provided at the bottom of the water tank to support the object being washed and cared for.
[0006] Furthermore, the swing mechanism is movably connected to the curved arm, and the swing mechanism limits the curved arm; the curved arm can adaptively swing towards the object being washed and cared for, and the swing mechanism limits the curved arm when it swings away from the object being washed and cared for.
[0007] Furthermore, the swing mechanism includes a swing motor, which is movably connected to the curved arm via a four-bar linkage; the four-bar linkage includes opposing frame rods and connecting arm rods, which are connected by a double crank for translational motion; the frame rods are hinged to a movable support, and the connecting arm rods are fixedly connected to the curved arm; the swing motor is fixedly installed on the movable support, and the swing motor drives the frame rods to swing accordingly; when the frame rods are fixed, the connecting arm rods can move closer to the object being washed and cared for as the cranks swing.
[0008] Furthermore, the crank closer to the object being washed is the first crank, and the crank farther away from the object being washed is the second crank. The first crank and the second crank are in the same plane. When the frame rod is fixed, the second crank acts as a limiting structure to restrict the first crank from swinging away from the object being washed.
[0009] Furthermore, the supporting mechanism is height-adjustable; when the arched assembly rotates above the object being washed, the supporting mechanism can lift the object to be against the curved arm; when the arched assembly rotates below the object being washed, the supporting mechanism can lower the object to be against the curved arm.
[0010] Furthermore, the supporting mechanism includes a plurality of support blocks arranged in a row, and a massage mechanism is also provided on the top of the support blocks. The plurality of support blocks can independently perform lifting and lowering movements under the drive of the lifting mechanism.
[0011] Furthermore, a rotary motor is provided on each side of the water tank. The drive shaft of the rotary motor passes through the side wall of the water tank and is connected to a movable support located inside the water tank. The movable support is driven to rotate by the rotary motor.
[0012] Furthermore, a water pipe is provided on the outer periphery of the curved arm, and the water pipe has several water outlet holes facing the object being washed or cared for.
[0013] Furthermore, a method for operating a curved-arm-to-arch washing and massage device involves maintaining the curved arms on the two washing mechanisms in a constant state of opposition during the washing and massage of the object, so that the two curved arms are combined into an arch-shaped assembly in a split-type splicing manner; during the washing process, the supporting mechanism drives the object to rise and fall accordingly, so that the object is always in contact with the massage mechanism on the inner side of the curved arm, and then the swinging mechanism drives the curved arm to swing, adjusting the inner contour shape of the arch-shaped assembly to match the outer contour shape of the object.
[0014] Beneficial effects: The beneficial effects of the curved arm arch-shaped washing and massage device and its working method of the present invention are as follows:
[0015] 1) The user is washed and cared for by two curved arms that are combined into an arch shape. The inner side of the curved arms is equipped with a massage mechanism. The curved arms are driven to swing by a swing mechanism, so that the inner contour shape of the arch combination changes with the swing of the curved arms to adapt to the outer contour shape of the object being washed and cared for. This allows the massage mechanism on the inner side of the curved arms to fit as closely as possible to the object being washed and cared for, thereby achieving a better washing, care and massage effect.
[0016] 2) When the inner contour of the arched assembly matches the outer contour of the user's head, the inner contour of the arched assembly may not be exactly flush with the outer contour of the user's head. Therefore, the swing mechanism is connected to the curved arm through a four-bar linkage, allowing the curved arm to swing adaptively toward the object being washed. The swing mechanism also limits the movement of the curved arm as it swings away from the object being washed. Thus, when the inner contour of the arched assembly is flush with the outer contour of the user's head, the arched assembly can change its inner contour shape while remaining flush with the user's head, so that the inner contour shape of the arched assembly changes to match the outer contour shape of the user's head. Attached Figure Description
[0017] Appendix Figure 1 A schematic diagram of the overall structure of the washing and massage device;
[0018] Appendix Figure 2 A top view of the shampooing and massage device;
[0019] Appendix Figure 3 A schematic diagram of the internal transmission structure of a shampooing and massage device;
[0020] Appendix Figure 4 This is a schematic diagram showing the connection between the four-bar linkage and the bending arm.
[0021] Appendix Figure 5 This is a schematic diagram of the internal structure of a massage facility. Detailed Implementation
[0022] The invention will now be further described with reference to the accompanying drawings.
[0023] As attached Figures 1 to 5 The aforementioned curved-arm anti-arch washing and massage device includes a left washing mechanism 3 and a right washing mechanism 2 arranged opposite to each other. Each of the left washing mechanism 3 and the right washing mechanism 2 is provided with a curved arm 10, and a massage mechanism 11 is provided on the inner side of the curved arm 10. The massage mechanism 11 is provided with a plurality of massage heads 15, which rub and massage the object being washed when the massage heads 15 move.
[0024] When the two curved arms 10 are facing each other, they lie in the same plane and are assembled into an arched assembly in a split-type splicing manner. The curved arms 10 are mounted on the movable support 7, which can rotate actively to drive the arched assembly to rotate around an axis, and the arched assembly forms a spherical rotation trajectory when rotating. Taking the human head as an example, the spherical rotation trajectory of the arched assembly corresponds to and adapts to the shape of the human head. By rotating the arched assembly, the position of the massage mechanism 11 is adjusted, so that the massage mechanism 11 can massage and wash the human scalp area.
[0025] A swing mechanism is also provided on the movable support 7, which drives the curved arm 10 to swing. The shape of the curved arm 10 itself remains unchanged; what changes after the curved arm 10 swings is the inner contour shape of the arched assembly, not the shape of the curved arm 10 itself. The inner contour shape of the arched assembly changes with the swing of the curved arm 10 to adapt to the outer contour shape of the object being washed. When the object being washed is the human head, the shape of the curved arm 10 can adapt to the shape of the human head as it swings, so that the massage mechanism 11 on the inner side of the curved arm 10 fits as closely as possible to the human head, thereby achieving a better washing and massage effect.
[0026] Both the left washing and conditioning mechanism 3 and the right washing and conditioning mechanism 2 are located inside the water tank 1. Taking hair washing as an example, the wastewater generated during the hair washing process is collected by the water tank 1. There are 13 water outlet pipes at the bottom of the water tank 1 to discharge the wastewater. A support mechanism 4 is also provided at the bottom of the water tank 1 to support the object being washed and conditioned, so that the object being washed and conditioned is kept at a certain distance from the bottom of the water tank 1.
[0027] Rotary motors 6 are respectively installed on both sides of the water tank 1. The drive shaft of the rotary motor 6 passes through the side wall of the water tank 1 and is connected to a movable support 7 located inside the water tank 1. The movable support 7 is driven to rotate by the rotary motor 6. (See attached diagram) Figure 4 In one embodiment shown, the rotary motor 6 is connected to the movable support 7 via a reducer 16 and a coupling 17. When the rotary motor 6 is started, it drives the movable support 7 to rotate in the vertical plane.
[0028] A water pipe 13 is provided on the outer periphery of the curved arm 10. The water pipe 13 is supplied with water by an external water supply pipe 13. Several water outlets 14 are opened on the water pipe 13 facing the object being washed. During the shampooing process, shampoo is added to the user's head according to the appropriate dosage, and then water is sprayed onto the object being washed through the water outlets 14. Then, the massage mechanism 11 rubs and massages the user's head, thereby achieving the cleaning of the user's head.
[0029] A vision module is also installed inside the water tank 1. The vision module performs visual detection on the outer contour shape of the object being washed. After receiving the visual information, the cloud analyzes the outer contour shape of the object and then controls the curved arm 10 to swing according to the visual information, adjusting the shape of the inner contour of the arched assembly so that the inner contour shape of the arched assembly matches the outer contour shape of the object being washed. This ensures that each massage head 15 on the massage mechanism 11 can fit snugly against the user's head. (See attached image) Figure 2 In the embodiment shown, a camera 5 is positioned at the top center of the water tank 1 and on one side of the water tank 1, respectively. The two cameras 5 work together to acquire visual information about the user's head. A supplementary light is provided on each camera 5 to ensure that cleaning images can be captured even in low-light conditions.
[0030] The structure of a massage mechanism 11 is shown in the attached figure. Figure 5 As shown, the massage head 15 has several flexible rubber claws that massage and rub the user's head. These claws elastically deform upon contact with the user's head. The massage head 15 is connected to a gear via an eccentric rod 22. When the gear rotates, the massage head 15 reciprocates, simulating finger rubbing and enhancing massage comfort. A worm gear is embedded in the output shaft of the motor 20, which drives the massage head 15 to reciprocate via the worm gear and gear set 21. The massage mechanism 11 is detachably mounted on the curved arm 10; different massage mechanisms 11 can provide different massage experiences.
[0031] Different users have different head contours, and the position of the user's head is not fixed during washing and care. Therefore, even if the inner contour of the arched assembly matches the outer contour of the user's head after the swing mechanism controls the curved arm 10 to swing, the inner contour of the arched assembly may not be exactly in contact with the outer contour of the user's head.
[0032] To address the aforementioned problems, in this invention, a swing mechanism is movably connected to the curved arm 10, and the swing mechanism can limit the movement of the curved arm 10. The curved arm 10 can move relative to the swing mechanism, allowing it to adaptively swing towards the object being washed or cared for, while the swing mechanism limits its movement when the curved arm 10 swings away from the object. In short, the curved arm 10 has a degree of freedom of movement within a plane, allowing it to swing towards the object until the massage mechanism 11 on the inner side of the curved arm 10 is pressed against the user's head, and when it swings away from the object, it is limited by the swing mechanism.
[0033] In this way, the inner contour shape of the arched assembly will have two dimensions of change. So when the inner contour of the arched assembly is close to the outer contour of the user's head, the arched assembly can change its inner contour shape while maintaining close contact with the user's head, so that the inner contour shape of the arched assembly changes to match the outer contour shape of the user's head.
[0034] Specifically, as shown in the attached document Figure 4As shown, the swing mechanism includes a swing motor 8, which is movably connected to the curved arm 10 via a four-bar linkage 9. The four-bar linkage 9 includes opposing frame rods 91 and connecting arm rods 92, which are connected by a double-crank translational connection. Frame rod 91 is hinged to a movable support 7, while connecting arm rod 92 is fixedly connected to the curved arm 10. The swing motor 8 is fixedly mounted on the movable support 7, and a swing arm 18 is connected to the output shaft of the swing motor 8. The swing arm 18 is hinged to one end of a connecting rod 19, and the other end of the connecting rod 19 is hinged to the movable end of the frame rod 91. Therefore, the swing motor 8 can correspondingly drive the frame rod 91 to swing. When the frame rod 91 is fixed, the connecting arm rod 92 can move closer to the object being washed as the crank swings, thus giving the inner contour shape of the arched assembly two dimensions of change.
[0035] In the four-bar linkage 9, the frame rod 91 and the connecting arm 92 are parallel to each other. The position of the frame rod 91 is entirely controlled by the swing motor 8. When the frame rod 91 is fixed, the connecting arm 92 can swing via a double crank, but the connecting arm 92 always remains parallel to the frame rod 91 during the swing. Therefore, while keeping the inner contour of the arched assembly in contact with the outer contour of the user's head, the swing motor 8 controls the frame rod 91 to rotate. When the frame rod 91 rotates, the connecting arm 92 will also swing accordingly, thereby changing the inner contour shape of the arched assembly and adjusting the inner contour shape of the arched assembly to match the outer contour shape of the user's head.
[0036] The crank closer to the object being washed is the first crank 93, and the crank farther away from the object is the second crank 94. The first crank 93 and the second crank 94 are in the same plane. When the frame rod 91 is fixed, the second crank 94 acts as a limiting structure to restrict the first crank 93 from swinging away from the object being washed. Once the first crank 93 swings away from the user's head and contacts the second crank 94, the first crank 93 can no longer swing away from the user's head.
[0037] The supporting mechanism 4 is height-adjustable, and when it rises or falls, it causes the object to be washed or cared for to rise or fall synchronously, so that the outer contour of the user's head can remain against the inner contour of the arched assembly. Specifically, when the arched assembly rotates to above the object to be washed or cared for, the supporting mechanism 4 can lift the object to be washed or cared for until it is against the curved arm 10. When the arched assembly rotates to below the object to be washed or cared for, the supporting mechanism 4 can lower the object to be washed or cared for until it is against the curved arm 10.
[0038] The supporting mechanism 4 includes several support blocks arranged in a row. Each support block has a massage mechanism 11 on its top for massaging and kneading the back of the user's head. The support blocks can independently rise and fall under the action of a lifting mechanism. When a particular support block descends, the area of the user's back of the head corresponding to that support block is exposed for rinsing. In one embodiment, the lifting mechanism is a lifting motor 12.
[0039] The present invention also provides a method for operating a curved arm-to-arch washing and massage device. When washing and massaging the object, the curved arms 10 on the two washing mechanisms always remain opposite each other, so that the two curved arms 10 are combined into an arch-shaped assembly in a split splicing manner. During the washing process, the supporting mechanism 4 drives the object to rise and fall accordingly, so that the object is always in contact with the massage mechanism 11 on the inner side of the curved arm 10. Then, the swing mechanism drives the curved arm 10 to swing, adjusting the inner contour shape of the arch-shaped assembly to match the outer contour shape of the object.
[0040] Specifically, when the arched assembly rotates to a position above the object being washed, the supporting mechanism 4 lifts the object to a position against the curved arm 10, and the swing mechanism adjusts the inner contour shape of the arched assembly to match the outer contour shape of the object. When the arched assembly rotates to a position below the object being washed, the supporting mechanism 4 lowers the object to a position against the curved arm 10, and the swing mechanism adjusts the inner contour shape of the arched assembly to match the outer contour shape of the object.
[0041] In addition, the image information obtained by the visual inspection module is used to determine whether the inner contour shape of the arched assembly matches the user's head. After the image information is uploaded to the cloud, the cloud controls the swing of the curved arm 10 according to the image information until the inner contour shape of the arched assembly matches the outer contour shape of the object being washed and cared for.
[0042] The working method of this invention is explained by washing the user's head: First, the user lies on the washing and conditioning platform with their head placed in the water tank 1. The support mechanism 4 supports the user's head accordingly. Then, water sprays from the water outlet 14 on the water pipe 13 to wet the user's scalp and hair. Next, shampoo is added according to the appropriate dosage. Then, the left washing and conditioning mechanism 3 and the right washing and conditioning mechanism 2 start to work, and the support mechanism 4 and the massage mechanism 11 on the curved arm 10 also start to work. During the operation of the left washing and conditioning mechanism 3 and the right washing and conditioning mechanism 2, the two curved arms 10 maintain... In a relative state, they are combined into an arched assembly. A rotating bracket drives the arched assembly to rotate, allowing the massage mechanism 11 inside the curved arm 10 to massage and rub different areas of the user's head. During the washing and conditioning process, the supporting mechanism 4 slowly lifts and lowers the user's head, ensuring the head remains in contact with the massage mechanism 11 inside the curved arm 10. Then, a swing mechanism drives the curved arm 10 to swing, adjusting the inner contour of the arched assembly to match the outer contour of the user's head, ensuring each massage head 15 massages the scalp. After the massage and rubbing phase, water flows again from the pipe 13 to thoroughly rinse the user's head, removing residual shampoo and dirt, completing the washing and conditioning process. The user can then stand up.
[0043] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A curved arm-shaped washing and massage device, characterized in that: It includes a left washing and care mechanism (3) and a right washing and care mechanism (2) arranged opposite to each other. Each of the two washing and care mechanisms is provided with a curved arm (10). A massage mechanism (11) is provided on the inner side of the curved arm (10). When the two curved arms (10) are opposite to each other, they are combined into an arched assembly in a split splicing manner. The curved arm (10) is mounted on a movable bracket (7). The movable bracket (7) can rotate actively to drive the arched assembly to rotate around the axis and form a spherical rotation trajectory. The movable bracket (7) is also provided with a swing mechanism. The swing mechanism can drive the curved arm (10) to swing. The inner contour shape of the arched assembly changes with the swing of the curved arm (10) to adapt to the outer contour shape of the object to be washed and cared for.
2. The curved arm arch-shaped washing and massage device according to claim 1, characterized in that: The left washing and care mechanism (3) and the right washing and care mechanism (2) are both located in the water tank (1). The bottom of the water tank (1) is also provided with a support mechanism (4) for supporting the object to be washed and cared for.
3. The curved arm arch-shaped washing and massage device according to claim 2, characterized in that: The swing mechanism is movably connected to the curved arm (10), and the swing mechanism limits the curved arm (10); the curved arm (10) can swing adaptively toward the object being washed and cared for, and the swing mechanism limits the curved arm (10) when it swings away from the object being washed and cared for.
4. The curved arm arch-shaped washing and massage device according to claim 3, characterized in that: The swing mechanism includes a swing motor (8), which is movably connected to the bent arm (10) via a four-bar linkage (9); the four-bar linkage (9) includes opposing frame rods (91) and connecting arm rods (92), which are connected by a double crank for translational motion; the frame rod (91) is hinged on the movable support (7), and the connecting arm rod (92) is fixedly connected to the bent arm (10); the swing motor (8) is fixedly installed on the movable support (7), and the swing motor (8) drives the frame rod (91) to swing accordingly; when the frame rod (91) is fixed, the connecting arm rod (92) can approach the object being washed and cared for as the crank swings.
5. A curved arm-to-arch washing and massage device according to claim 4, characterized in that: The crank closer to the object being washed is the first crank (93), and the crank farther away from the object being washed is the second crank (94). The first crank (93) and the second crank (94) are in the same plane. When the frame rod (91) is fixed, the second crank (94) acts as a limiting structure to restrict the first crank (93) from swinging away from the object being washed.
6. A curved-arm, arched washing and massage device according to claim 3, characterized in that: The supporting mechanism (4) is liftable; when the arched assembly rotates to above the object to be washed, the supporting mechanism (4) can lift the object to be washed to the side of the curved arm (10); when the arched assembly rotates to below the object to be washed, the supporting mechanism (4) can support the object to be washed and lower it to the side of the curved arm (10).
7. A curved-arm, arched washing and massage device according to claim 6, characterized in that: The supporting mechanism (4) includes a plurality of supporting blocks arranged in a row, and a massage mechanism (11) is also provided on the top of the supporting blocks. The plurality of supporting blocks can independently perform lifting and lowering actions under the drive of the lifting mechanism.
8. A curved arm-to-arch washing and massage device according to claim 2, characterized in that: Rotary motors (6) are respectively provided on both sides of the water tank (1). The drive shaft of the rotary motor (6) passes through the side wall of the water tank (1) and is connected to the movable support (7) located inside the water tank (1). The movable support (7) is driven to rotate by the rotary motor (6).
9. A curved arm-to-arch washing and massage device according to claim 2, characterized in that: A water pipe (13) is provided on the outer periphery of the curved arm (10), and the water pipe (13) has several water outlet holes (14) facing the object to be washed.
10. The working method of the curved arm-to-arch washing and massage device according to claim 6, characterized in that: When washing and massaging the object, the curved arms (10) on the two washing mechanisms always remain opposite each other, so that the two curved arms (10) are combined into an arched assembly in a split splicing manner; during the washing process, the supporting mechanism (4) drives the object to rise and fall accordingly, so that the object is always in contact with the massage mechanism (11) on the inside of the curved arm (10), and then the swing mechanism drives the curved arm (10) to swing, so that the inner contour shape of the arched assembly is adjusted to match the outer contour shape of the object.