Single-source, dual-output wave-like oscillating massage mechanism

Abstract

In the field of home massage equipment technology, we provide a single-drive source, dual-output wave-like oscillating massage mechanism. [Solution] The device includes a gear case lower cover 9, at least one electric motor 10, a main gear, an iron shaft, and a driven gear. The electric motor is fixedly positioned inside the gear case lower cover, and the main gear is fixed to the output shaft of the electric motor. Two iron shafts are fixed vertically to the inner bottom surface of the gear case lower cover, and a corresponding driven gear is rotatably supported on each iron shaft, so that the driven gear always rotates around the iron shaft. The two driven gears are positioned on the left and right sides of the main gear and mesh with the main gear to transmit power. Furthermore, this mechanism includes a fixed base 3. By driving the main gear with an electric motor, synchronously rotating the driven gears which are symmetrically positioned with respect to the main gear, and acting the internal rigid transmission shaft 5 and the outer joint component 2 via the fixed base connected to each driven gear, the problem of the device becoming large, which is required to provide multiple motors individually in conventional dual-drive massage devices, can be solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of household massage devices, and particularly relates to a single drive source and two-output type wave-like rocking massage mechanism.

Background Art

[0002] With the improvement of living standards and the increasing emphasis on health, various massage devices have been widely popularized in ordinary households and are used as important health assistance devices for fatigue recovery and physical and mental relaxation. Among these massage devices, biomimetic massage mechanisms that mimic the movement patterns of the living body, such as serpentine rocking or a left-right alternating movement like a fish tail, have high followability to the human body, flexible movements, and rich stimulation, and thus have received high evaluations from users. In particular, in handheld rod-shaped massage appliances, etc., in order to achieve a more realistic tactile sensation, a mechanism configuration that generates a continuous and smooth rocking movement is strongly demanded. However, in conventional biomimetic rocking massage mechanisms, there are essential limitations in their drive methods. In a general configuration, a vibration drive by an eccentric cam or a drive method by single-axis rotation is adopted, but in these methods, the movement trajectory is monotonous and rigid, and it is difficult to sufficiently reproduce the flexible and continuous peristaltic movement peculiar to the living body. Although some high-functional products achieve multi-degree-of-freedom movement by arranging a multi-joint link mechanism or a plurality of servo motors in series, the structure becomes extremely complicated, leading to an increase in manufacturing costs and the enlargement of the device, making it difficult to apply to portable devices. A further significant challenge is that, when synchronously driving two separate left and right massage units within the same device, conventional technology typically requires two sets of independent motors and transmission systems. As a result, internal space is severely restricted, reducing battery capacity and the flexibility of other functional components. Moreover, it becomes difficult to accurately maintain phase synchronization between the two systems, leading to malfunctions such as operational mismatch and vibration cancellation, which greatly impairs the user experience. Establishing a technology to stably and synchronously perform biomimetic oscillations of two separate left and right massage units using a single power source within a limited enclosure space is a crucial technological challenge in this field. Therefore, in order to solve the above problems, this invention proposes a single-drive source, dual-output wave-like oscillation massage mechanism. [Overview of the project]

[0003] In view of the problems of the prior art, this invention aims to provide a single-drive-source, dual-output wave-like oscillation massage mechanism that can stably and synchronously mimic the bio-imaginative oscillation of two massage units (left and right) using a single drive source in a limited installation space.

[0004] This invention achieves the above objective through the following technical configuration. Specifically, the single-drive source, dual-output wave-like oscillating massage mechanism according to this invention includes a gear case lower cover, at least one electric motor, a main gear, an iron shaft, and a driven gear. The electric motor is fixedly positioned inside the lower cover of the gear case, and a main gear is fixed to the output shaft of the electric motor. Two iron shafts are fixed vertically to the inner bottom surface of the lower cover of the gear case, and a corresponding driven gear is rotatably supported on each iron shaft, so that the driven gear always rotates around the iron shaft. The two driven gears are positioned on both the left and right sides of the main gear and mesh with the main gear to transmit power. Furthermore, it comprises a fixed base, a fixed base, and multiple joint components. A fixed base is fixedly attached to the upper part of each of the driven gears, and the fixed base rotates synchronously with the rotation of the driven gears. A rigid transmission shaft is inserted and fixed inside the fixed base, and the rigid transmission shaft is formed in a spiral curve. The rigid transmission shaft may be made of iron wire, a hard resin material, or a hard rubber material. Multiple joint components are arranged in layers on the outer circumference of the rigid transmission shaft, and adjacent joint components are rotatably connected to each other by a pin connection structure. The fixed base drives the rigid transmission shaft and rotates it inside the joint components, thereby generating a reciprocating oscillating motion in the joint components. Preferably, the mechanism further includes a lower gear case cover, the upper gear case cover is positioned over the lower gear case cover, and the lower surface of the upper gear case cover abuts against the upper end surface of the driven gear, thereby restricting the axial movement of the driven gear and preventing misalignment. Preferably, the mechanism includes a support member, the upper ends of the two rigid transmission shafts are rotatably supported within the support member, and the support member serves to restrict the position of the upper ends of the rigid transmission shafts. Preferably, the support member is made of a plate-shaped member, a positioning hole is formed on the lower surface of the support member, the upper end of the rigid transmission shaft extends into this positioning hole and is capable of rotating within the support member. Preferably, a fitting recess is formed on the upper surface of the fixed base, and the lower end of the rigid transmission shaft is fitted and held within the fitting recess, so that the rigid transmission shaft rotates integrally with the rotation of the fixed base. Preferably, a rectangular guide hole is formed in the center of each joint component through which a rigid transmission shaft can pass, and the inner wall of the rectangular guide hole is configured to slidably contact the helical outer surface of the rigid transmission shaft, so that the pressing action caused by the rotation of the rigid shaft displaces the joint component. Preferably, the electric motor is positioned vertically through the bottom surface of the gear case lower cover, the main gear is positioned at the bottom interior of the gear case lower cover, and the tooth thickness of the main gear matches the tooth thickness of the driven gear. Preferably, the plurality of joint components are arranged continuously in the axial direction of the rigid transmission shaft, and each joint component is rotatable only within a specific plane relative to the adjacent member. Preferably, the two driven gears are arranged symmetrically with respect to the main gear, thereby achieving the effect of simultaneously driving two systems by the simultaneous operation of two sets of rigid transmission shafts and joint components. The iron shaft is fixed to a predetermined depth within the lower cover of the gear case, and the upper end of the iron shaft is set in a position that does not protrude above the upper end surface of the driven gear, so as not to obstruct the rotation of the fixed base.

[0005] This invention provides the following beneficial effects. 1. By using an electric motor to drive the main gear, synchronously rotating driven gears arranged symmetrically with respect to the main gear, and acting on the internal rigid transmission shaft and the outer joint components via fixed bases connected to each driven gear, this configuration eliminates the need for multiple motors individually, which leads to larger size and increased costs, as well as the problem of phase misalignment between left and right movements in conventional dual-drive massage devices. As a result, it becomes possible to drive both left and right systems with a single power source, simultaneously achieving miniaturization of the device, simplification of structure, reduction of power consumption, and stable coordination of left and right movements. 2. By inserting and fixing a rigid transmission shaft, which is formed in a spiral curve, into a fixed base so that it can rotate, and by making the outer surface of the rigid transmission shaft slidably contact the inner walls of the rectangular guide holes formed in the multiple joint components, the problem of being limited to simple vibrational motion or circumferential rotational motion, which is rigid and lacks a biological feel, as seen in conventional massage mechanisms can be resolved. In other words, by efficiently converting simple rotational motion into continuous and flexible reciprocating oscillation motion and reproducing an oscillation trajectory similar to the wave-like motion of living organisms, the comfort and perceived quality during massage can be significantly improved. 3. By restricting the axial movement of the driven gear with the gear case top cover and position-restraining the upper end of the rigid transmission shaft with a plate-shaped support member, gear misalignment and wobble / unstable behavior at the tip of the long shaft during high-speed rotation can be prevented. This improves the overall operational stability of the transmission system, reduces operating noise, and extends the lifespan of the mechanism. [Brief explanation of the drawing]

[0006] [Figure 1] Figure 1 is a three-dimensional view of the present invention. [Figure 2] Figure 2 is a schematic diagram of the joint component according to the present invention. [Figure 3] Figure 3 is a schematic diagram of the lower gear case cover according to the present invention. [Figure 4] Figure 4 is a schematic diagram of the rigid transmission shaft according to the present invention. [Figure 5] Figure 5 is a schematic diagram of the steel shaft according to the present invention. [Figure 6] Figure 6 is a schematic diagram of the dustproof cap according to the present invention. [Figure 7] Figure 7 is a schematic diagram of the soft rubber according to the present invention. [Figure 8] Figure 8 is a schematic diagram of the decorative member according to the present invention. [Modes for carrying out the invention]

[0007] The technical means of embodiments of the present invention will be clearly and completely described below with reference to the drawings of the specification. Clearly, the embodiments described are only some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative ingenuity based on the embodiments of the present invention are within the scope of the protection of the present invention.

[0008] Examples: As shown in Figures 1 to 3, a single-drive source, dual-output wave-like oscillating massage mechanism according to one embodiment of the present invention comprises a gear case lower cover 9, at least one electric motor 10, a main gear 8, an iron shaft 7, and a driven gear 6. The electric motor 10 is fixedly positioned inside the gear case lower cover 9 and is configured to prevent displacement or vibration during operation. The main gear 8 is fixedly connected to the output shaft of the electric motor 10, and the main gear 8 rotates when the motor is driven. Two iron shafts 7 are fixed vertically to the inner bottom surface of the gear case lower cover 9, and these iron shafts 7 are securely fixed to mounting holes formed on the gear case lower cover 9 by welding or the like. A corresponding driven gear 6 is rotatably supported on each iron shaft 7, and the driven gear 6 always rotates around the iron shaft 7. The two driven gears 6 are positioned on the left and right sides of the main gear 8 and, by meshing with the main gear 8, rotate synchronously with the rotation of the main gear 8.

[0009] As shown in Figures 3 to 5, this mechanism further comprises a fixed base 3, a rigid transmission shaft 5, and a plurality of joint components 2. The fixed base 3 is fixedly joined to the upper part of each driven gear 6, and the fixed base 3 and the driven gear 6 are firmly integrated by welding or the like, so that no power loss occurs during rotation. A fitting recess is formed on the upper surface of the fixed base 3, and the shape and dimensions of the fitting recess are set to correspond to the cross-sectional shape of the lower end of the rigid transmission shaft 5. The fitting recess can be securely fitted to the rigid transmission shaft 5, and is configured so that the rigid transmission shaft 5 rotates integrally with the rotation of the fixed base 3. The rigid transmission shaft 5 is inserted and fixed inside the fixed base 3, and the rigid transmission shaft 5 is made of high-strength stainless steel and is formed in a predetermined spiral shape. The pitch of this spiral shape is set to impart a desired oscillating motion to the joint components 2, which will be described later. The lower end of the rigid transmission shaft 5 is fitted and held within the fitting recess, and the inner wall of the fitting recess restricts the relative movement of the rigid transmission shaft 5 with respect to the fixed base 3 in the circumferential and axial directions. As a result, the rigid transmission shaft 5 rotates integrally with the rotation of the fixed base 3. The rigid transmission shaft 5 may be made of iron wire, a hard resin material, or a hard rubber material. Multiple joint components 2 are arranged in layers on the outer circumference of the rigid transmission shaft 5, and adjacent joint components 2 are rotatably connected to each other by a pin connection structure, so that the movement of the joint components 2 is flexible and smooth. The fixed base 3 drives the rigid transmission shaft 5 to rotate inside the joint components 2, thereby generating a reciprocating oscillating motion in the joint components 2, and the trajectory of this motion is designed to conform to the massage requirements of the human body. A rectangular guide hole is formed in the center of each joint component 2 through which the rigid transmission shaft 5 can pass, thereby reducing friction and wear with the rigid transmission shaft 5. The inner wall of this rectangular guide hole is configured to slidably contact the helical outer surface of the rigid transmission shaft 5, and the pressing action caused by the rotation of the rigid shaft 5 displaces the joint component 2, converting the simple rotational motion of the rigid transmission shaft 5 into a reciprocating oscillating motion of the joint component 2.Multiple joint components 2 are arranged continuously in the axial direction of the rigid transmission shaft 5 to form a series of massage contact units, and each joint component 2 is rotatable only within a specific plane relative to adjacent members.

[0010] As shown in Figures 1, 4, and 5, this mechanism further includes a gear case upper cover 4. The gear case upper cover 4 is positioned over the gear case lower cover 9 and is detachably fastened by a plurality of bolts located on its periphery. The lower surface of the gear case upper cover 4 abuts against the upper end surface of the driven gear 6, restricting the axial movement of the driven gear 6 and preventing displacement during rotation. Furthermore, this mechanism includes a support member 1, and the upper ends of the two rigid transmission shafts 5 are each rotatably supported within the support member 1, with the support member 1 playing a role in restricting the position of the upper ends of the rigid transmission shafts 5. The support member 1 is made of a plate-like member, and positioning holes are formed on its lower surface to reduce frictional resistance during rotation of the rigid transmission shafts 5. The upper ends of the rigid transmission shafts 5 extend into these positioning holes and are able to rotate within the support member, and their position is constrained, thereby suppressing runout and unstable behavior. The electric motor 10 is positioned vertically, penetrating the bottom surface of the gear case lower cover 9, and the main gear 8 is positioned at the bottom interior of the gear case lower cover 9. The tooth thickness of the main gear 8 matches the tooth thickness of the driven gear 6, and they are designed to make complete contact at their meshing surfaces. The two driven gears 6 are arranged symmetrically around the main gear 8, so that the two sets of rigid transmission shafts 5 and joint components 2 operate simultaneously and synchronously, achieving the effect of driving two systems at the same time. The iron shaft 7 is fixed at a predetermined depth inside the gear case lower cover 9, and is configured to prevent loosening or falling out during use. In addition, the upper end of the iron shaft 7 is set so as not to protrude above the upper end surface of the driven gear 6, so as not to interfere with the rotation of the fixed base 3. As shown in Figures 6 to 8, the housing body 11 is fitted around the outer circumference of the gear case top cover 4, protecting the gear case top cover 4. An upper cover 12 is fitted to the front end of the housing body 11, and a lower cover 13 is fitted to the rear end, forming an exterior structure with the housing body 11, upper cover 12, and lower cover 13. A dustproof cap 14 is screwed onto the upper end of the housing body 11, preventing dust from entering the internal mechanism. Soft rubber 15 is placed inside the support member 1 to improve the tactile feel during massage. Two decorative members 16 are attached to the lower end of the housing body 11 to improve its appearance.

[0011] Operating principle: This mechanism is used while incorporated inside the housing body 11 and the lower cover 13. When in use, the dust cap 14 is opened, and the electric motor 10 fixed inside the gear case lower cover 9 is started. The electric motor 10 drives the main gear 8 fixed to its output shaft, causing two driven gears 6 that mesh with the main gear 8 to rotate synchronously. The rotation of the driven gears 6 is performed with the rotation center restricted by the iron shaft 7, and further axial movement is suppressed by the gear case upper cover 4, preventing deviation during rotation. As the driven gears 6 rotate, the fixed base 3 fixed to its upper part rotates, and the rigid transmission shaft 5 rotates integrally with it due to the fitting recess in the fixed base 3. Because the rigid transmission shaft 5 has a helical shape, its rotation pushes multiple joint components 2 arranged on its outer circumference, causing each joint component 2 to reciprocate and oscillate. Adjacent joint components 2 are connected by a pin connection structure. The upper end positions of the two rigid transmission shafts 5 on the left and right are constrained by the support members 1. This enables the simultaneous driving effect of both systems.

[0012] Although embodiments of the present invention have been illustrated and described, those skilled in the art will understand that various modifications, alterations, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention shall be defined by the appended claims and their equivalents. [Explanation of Symbols]

[0013] 1 Support member 2 Joint component 3 Fixed base 4 Gear case upper cover 5 Rigid transmission shaft 6 Driven gear 7 Iron shaft 8 Main gear 9 Gear case lower cover 10 Electric motor 11 Housing body 12 Upper cover 13 Lower cover 14 Dust cap 15 Soft rubber 16 Decorative member

Claims

1. A single-drive source, dual-output wave-like oscillating massage mechanism, It comprises a gear case lower cover (9), at least one electric motor (10), a main gear (8), an iron shaft (7), and a driven gear (6), The electric motor (10) is fixedly positioned inside the lower cover (9) of the gear case, and the main gear (8) is fixed to the output shaft of the electric motor (10). Two iron shafts (7) are fixed vertically to the inner bottom surface of the gear case lower cover (9), and a corresponding driven gear (6) is rotatably supported on each iron shaft (7). The driven gears (6) always rotate around the iron shaft (7), and the two driven gears (6) are positioned on the left and right sides of the main gear (8), meshing with the main gear (8) to transmit power. Furthermore, it comprises a fixed base (3), a rigid transmission shaft (5), and a plurality of joint components (2), A fixed base (3) is fixedly attached to the upper part of each of the driven gears (6), and the fixed base (3) rotates synchronously with the rotation of the driven gears (6). A rigid transmission shaft (5) is inserted and fixed inside the fixed base (3), and the rigid transmission shaft (5) is formed in a spiral curve. The rigid transmission shaft (5) may be made of iron wire, a hard resin material, or a hard rubber material. Multiple joint components (2) are arranged in layers on the outer circumference of the rigid transmission shaft (5), and adjacent joint components (2) are rotatably connected to each other by a pin connection structure. The fixed base (3) drives the rigid transmission shaft (5) to rotate inside the joint components (2), thereby generating a reciprocating oscillating motion in the joint components (2). A single-drive source, dual-output wave-like oscillating massage mechanism characterized by the following:

2. The gear case is equipped with an upper cover (4), which is positioned over the lower cover (9), and the lower surface of the upper cover (4) abuts against the upper end surface of the driven gear (6), thereby restricting the axial movement of the driven gear (6) and preventing misalignment. A single-drive source, dual-output wave-like oscillating massage mechanism according to claim 1, characterized by the above.

3. The system is equipped with a support member (1), the upper ends of the two rigid transmission shafts (5) are each rotatably supported within the support member (1), and the support member (1) serves to restrict the position of the upper ends of the rigid transmission shafts (5). A single-drive source, dual-output wave-oscillating massage mechanism according to claim 2, characterized by the above.

4. The support member (1) is made of a plate-shaped member, and a positioning hole is formed on the lower surface of the support member (1). The upper end of the rigid transmission shaft (5) extends into this positioning hole and is capable of rotating within the support member (1). A single-drive source, dual-output wave-oscillating massage mechanism according to claim 3, characterized by the above.

5. A fitting recess is formed on the upper surface of the fixed base (3), and the lower end of the rigid transmission shaft (5) is fitted and held within the fitting recess, so that the rigid transmission shaft (5) rotates integrally with the rotation of the fixed base (3). A single-drive source, dual-output wave-like oscillating massage mechanism according to claim 1, characterized by the above.

6. Each of the aforementioned joint components (2) has a rectangular guide hole formed in its center through which a rigid transmission shaft (5) can pass. The inner wall of the rectangular guide hole is configured to slidably contact the helical outer surface of the rigid transmission shaft (5), and the pressing action caused by the rotation of the rigid shaft (5) displaces the joint component (2). A single-drive source, dual-output wave-like oscillating massage mechanism according to claim 1, characterized by the above.

7. The electric motor (10) is positioned vertically through the bottom surface of the gear case lower cover (9), the main gear (8) is positioned at the bottom inside the gear case lower cover (9), and the tooth thickness of the main gear (8) matches the tooth thickness of the driven gear (6). A single-drive source, dual-output wave-like oscillating massage mechanism according to claim 1, characterized by the above.

8. Multiple joint components (2) are arranged continuously in the axial direction of the rigid transmission shaft (5), and each joint component (2) is rotatable only within a specific plane relative to the adjacent member. A single-drive source, dual-output wave-like oscillating massage mechanism according to claim 1, characterized by the above.

9. The two driven gears (6) are arranged symmetrically with respect to the main gear (8), thereby enabling the two sets of rigid transmission shafts (5) and joint components (2) to operate simultaneously, thereby achieving the effect of driving two systems at the same time. The iron shaft (7) is fixed at a predetermined depth within the gear case lower cover (9), and the upper end of the iron shaft (7) is set in a position that does not protrude beyond the upper end surface of the driven gears (6), taking care not to obstruct the rotation of the fixed base (3). A single-drive source, dual-output wave-like oscillating massage mechanism according to claim 1, characterized by the above.

10. The outer circumference of the gear case top cover (4) is fitted with the housing body (11), the front end of the housing body (11) is fitted with an upper cover (12), the rear end is fitted with a lower cover (13), a dust cap (14) is screwed onto the upper end of the housing body (11), soft rubber (15) is placed inside the support member (1), and two decorative members (16) are attached to the lower end of the housing body (11). A single-drive source, dual-output wave-oscillating massage mechanism according to claim 3, characterized by the above.

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