WO2021012808A1 - Multi-motor driving mechanism and massager - Google Patents

Abstract

A multi-motor driving mechanism (100), comprising: a housing (10), a driven wheel (20) and at least two power assemblies (30); the driven wheel (20) is rotatably connected to the housing (10), and the at least two power assemblies (30) are simultaneously engaged with the driven wheel (20), so as to drive the driven wheel (20) to rotate; the power assemblies (30) each comprise a motor (31) and a driving member (32), the motor (31) is connected to the housing (10), and the driving member (32) is connected to an output end of the motor (31), and is engaged with the driven wheel (20). The multi-motor driving mechanism (100) can drive, by means of at least two motors (31), the driven wheel (20) to rotate, so that the load shared by each motor (31) is reduced, reducing the power of the motors (31), and prolonging the service life of the motors (31). Further disclosed is a corresponding massager.

Description

Multi-motor driving mechanism and massager Technical field

The invention relates to the technical field of massagers, in particular to a multi-motor drive mechanism and a massager.

Background technique

With the accelerating pace of life, people’s work pressure is also increasing. In order to complete their work tasks, people often work overtime. After a day of intense work, people's bodies become tired. In order to relieve fatigue and maintain physical and mental health, people generally use massagers to massage their bodies. Existing massagers are generally vibrating massage or telescopic massage. The motor drives the eccentric structure to rotate to produce vibration, or drives the massage component to telescopic and reciprocate, repeatedly impacting the parts of the body that need to be massaged, thereby achieving the effect of massaging the body

However, the motor drive structure of the existing massager has low power, which makes the intensity of vibration and impact weaker. When the power of the motor of the massager is increased, the motor is easily burned out due to overload.

Summary of the invention

The invention provides a multi-motor drive mechanism to solve the technical problem of low service life of the motor of the existing massager.

The present invention provides a multi-motor drive mechanism. The multi-motor drive mechanism includes a housing, a driven wheel, and at least two power components. The driven wheel is rotatably connected with the housing, and the at least two power components mesh with the driven wheel at the same time. The driven wheel is driven to rotate; the power assembly includes: a motor and a driving part, the motor is connected with the housing; the driving part is connected with the output end of the motor, and is meshed with the driven wheel.

Optionally, the power assembly further includes a transmission group, which meshes with the driving part and the driven wheel respectively, and the transmission group is any one of gear transmission, belt transmission, chain transmission, and rack and pinion transmission.

Optionally, the transmission group includes one or more double-layer gears, the double-layer gears include a rotating shaft, a first-layer gear and a second-layer gear, the rotating shaft is rotatably connected with the housing, and the first-layer gear and the second-layer gear are stacked It is arranged in the circumferential direction of the rotating shaft, the diameter of the first layer gear is larger than the diameter of the second layer gear, the first layer gear meshes with the driving part, and the second layer gear meshes with the driven wheel.

Optionally, the number of double-layer gears is multiple, and the first-layer gear of one of the adjacent double-layer gears meshes with the other second-layer gear of the adjacent double-layer gears.

Optionally, the multi-motor drive mechanism further includes a connecting shaft and a rotating part, the driven wheel is arranged on the connecting shaft, the connecting shaft is rotatably connected with the housing, and the rotating part is connected with the connecting shaft to rotate together with the connecting shaft.

Optionally, the multi-motor drive mechanism further includes a bump, which is provided on the rotating part and does not coincide with the axis of the connecting shaft.

Optionally, the multi-motor drive mechanism further includes a swinging member, the swinging member is slidably connected with the housing, a matching portion is provided on the swinging member, the sliding direction of the matching portion and the swinging member are not parallel, and the protrusion is inserted into the matching portion.

Optionally, one of the casing and the swinging member is provided with a protrusion, and the other of the casing and the swinging member is provided with a sliding groove, and the protrusion is slidably inserted in the sliding groove.

Optionally, the driving member is a gear or a worm.

The present invention provides a massager, which includes the above-mentioned multi-motor drive mechanism.

The beneficial effects of the present invention are as follows: on the premise that the driving torque required for the rotation of the driven wheel is certain, the multi-motor drive structure drives the same driven gear to rotate through at least two motors, so that the load of each motor is small, and the motor is increased. Life. At the same time, when the output torque of the multi-motor drive structure is increased, at least two motors share the motor power that needs to be increased, and the output power increase of each motor is significantly smaller than the previous output power increase of a single motor.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.

Fig. 1 is an exploded structural diagram of an embodiment of a multi-motor drive mechanism provided by the present invention;

2 is a schematic diagram of an exploded structure of another embodiment of a multi-motor drive mechanism provided by the present invention;

FIG. 3 is an exploded structural diagram of another embodiment of the multi-motor drive mechanism provided by the present invention;

Figure 4 is a schematic diagram of the structure of area A in Figure 2;

5 is a schematic diagram of the assembly structure of another embodiment of the multi-motor drive mechanism provided by the present invention;

Fig. 6 is a schematic diagram of an embodiment of the massager provided by the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It can be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for ease of description, the drawings only show part of the structure related to the present invention, but not all of the structure. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Reference to "embodiments" herein means that a specific feature, structure or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art clearly and implicitly understand that the embodiments described herein can be combined with other embodiments.

Please refer to FIG. 1. FIG. 1 is an exploded structural diagram of an embodiment of a multi-motor drive mechanism 100 provided by the present invention.

The multi-motor drive mechanism 100 of this embodiment includes a housing 10, a driven wheel 20, and at least two power components 30. The driven wheel 20 is rotatably connected to the housing 10, and at least two power components 30 mesh with the driven wheel 20 at the same time to drive The driven wheel 20 rotates. Therefore, under the premise that the driving torque required for the rotation of the driven wheel 20 is constant, the driven wheel 20 is driven to rotate by the at least two power components 30, and the load shared by each power component 30 is reduced, thereby reducing the output power of the power component 30 , Increase the service life of the power assembly 30. The number of power components 30 may be 2, 4, 8, 10, etc. The power assembly 30 shown in FIG. 1 has four cases.

The power assembly 30 includes a motor 31 and a driving part 32. The motor 31 is connected to the housing 10, the driving member 32 is connected to the output end of the motor 31, the motor 31 is used to drive the driving member 32 to rotate, the driving member 32 and the driven wheel 20 mesh, and the driving member 32 drives the driven wheel 20 to rotate.

Understandably, when there are two power components 30, the two transmission groups 33 simultaneously drive the driven wheel 20 to rotate; when the power components 30 are four, the four transmission groups 33 simultaneously drive the driven wheel 20 to rotate, and so on, I will not repeat them one by one.

In this embodiment, under the premise that the driving torque required for the rotation of the driven wheel 20 is constant, the multi-motor drive structure 100 drives the same driven gear 20 to rotate through at least two motors 31, so that the load on each motor 31 is small. , Increase the service life of the motor 31. At the same time, when the output torque of the multi-motor 31 drive structure is increased, at least two motors 31 share the power of the motors 31 that need to be increased, and the output power increase of each motor 31 is significantly smaller than the previous output power increase of a single motor 31.

Please refer to FIG. 2, which is an exploded structural diagram of another embodiment of the multi-motor driving mechanism 100 provided by the present invention.

The power assembly 30 also includes a transmission group 33. The transmission group 33 meshes with the driving member 32 and the driven wheel 20 respectively, the driving member 32 drives the transmission group 33 to rotate, and the transmission group 33 drives the driven wheel 20 to rotate.

The transmission group 33 can be any of gear transmission, belt transmission, chain transmission, and rack and pinion transmission.

The driving member 32 may be a gear structure as shown in FIG. 2, and a gear refers to a mechanical element with gears on the rim that continuously engages and transmits movement and power. The driving member 32 may also be a worm structure as shown in FIG. 3. A worm refers to a gear having one or several helical teeth and meshing with a worm gear to form a cross-axis gear pair. In the following embodiments, the driving member 32 is a gear structure as an example for explanation.

Please refer to FIG. 2 and FIG. 4. FIG. 4 is a schematic diagram of the structure of area A in FIG. 2.

The transmission group 33 includes one or more double-layer gears 34. The double-layer gear 34 includes a rotating shaft 341, a first layer gear 342, and a second layer gear 343. The rotating shaft 341 is rotatably connected with the housing 10, and the first layer gear 342 and The second gear 343 is stacked on the circumference of the rotating shaft 341, the diameter of the first gear 342 is larger than the diameter of the second gear 343, the first gear 342 is meshed with the driving member 32, and the second gear 343 is engaged with the driven gear. 20 meshing to achieve the purpose of reducing speed and increasing torque.

When the number of double-layer gears 34 is multiple, the first-layer gear 342 of one of the adjacent double-layer gears 34 meshes with the other second-layer gear 343 of the adjacent double-layer gear 34. For example, the number of double-layer gears 34 is three, the first-layer gear 342 of the double-layer gear 34a meshes with the driving member 32, and the second-layer gear 343 of the double-layer gear 34a is connected to the first-layer gear of the adjacent double-layer gear 34b. 342 meshes, the second-layer gear 343 of the double-layer gear 34b meshes with the first-layer gear 342 of the adjacent double-layer gear 34c, and the second-layer gear 343 of the double-layer gear 34c meshes with the adjacent driven wheel 20.

In an optional embodiment, on each rotating shaft 341, the second gear 343 is on the side of the first gear 342 away from the motor 31. That is, the orientation of each double-layer gear 34 is the same, and the large-diameter first-layer gear 342 is under the small-diameter second-layer gear 343.

Please refer to FIG. 2 and FIG. 5. FIG. 5 is a schematic diagram of the assembly structure of another embodiment of the multi-motor drive mechanism 100 provided by the present invention.

The multi-motor drive mechanism 100 also includes a connecting shaft 40 and a rotating member 50. The driven wheel 20 is arranged on the connecting shaft 40. The connecting shaft 40 is rotatably connected to the housing 10, and the rotating member 50 is connected to the connecting shaft 40 to be together with the connecting shaft 40. Rotate.

The multi-motor drive mechanism 100 further includes a protrusion 60 which is arranged on the rotating member 50 and does not coincide with the axis of the connecting shaft 40, that is, the protrusion 60 is eccentrically arranged. The bump 60 can be connected with the action component, so that the action component completes a predetermined movement, and the predetermined movement includes eccentric vibration, telescopic movement and the like.

The multi-motor drive mechanism 100 also includes a swinging member 70, which is slidably connected to the housing 10. A matching portion is formed on the swinging member 70. The sliding direction of the matching portion and the swinging member 70 is not parallel, and the protrusion 60 is inserted into the matching portion. , The bump 60 is in clearance fit with the mating part. The mating part is roughly elongated, which can be a through hole structure or a through groove structure, or a pit or groove structure. In this embodiment, the mating part is a long through hole. When the driven wheel drives the bump 60 When rotating, the protrusion 60 acts on the inner wall of the long through hole to push the swing member 70 to telescopically and reciprocately move.

Optionally, the included angle of the sliding direction of the matching portion and the swing member 70 is 10 degrees to 90 degrees, preferably, 45 degrees to 90 degrees. For example, 45 degrees, 60 degrees, 75 degrees, 90 degrees, etc.

Specifically, the housing 10 includes two mounting frames 11 and two fixing frames 12, the two mounting frames 11 and the two fixing frames 12 are alternately connected in turn to form an accommodating space, and the motor 31 is connected to the mounting frame 11, The transmission group 33 is rotatably connected with the mounting frame 11, the connecting shaft 40 is rotatably connected with the mounting frame 11, and the swing member 70 is slidably connected with the fixing frame 12 to slide through the accommodating space.

The swing member 70 is provided with a sliding block 71, the fixed frame 12 is provided with a sliding groove 121, and the sliding block 71 is slidably inserted in the sliding groove 121; or the fixed frame 12 is provided with a sliding block 71, and the swing member 70 is provided with a sliding groove 121, The sliding block 71 slides through the sliding groove 121. Optionally, the cross-sectional shape of the sliding groove 121 is a dovetail shape, and correspondingly, the cross-sectional shape of the bump 60 is also a dovetail shape.

Please refer to FIG. 6, which is a schematic diagram of an embodiment of the massager provided by the present invention.

The massager of the present invention includes the multi-motor driving mechanism 100 in the above-mentioned embodiment, and the multi-motor driving mechanism 100 of the massager realizes the effect of massage.

The above are only the embodiments of the present invention and do not limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the description and drawings of the present invention, or directly or indirectly applied to other related technologies In the same way, all fields are included in the scope of patent protection of the present invention.

Claims (10)

A multi-motor drive mechanism, characterized in that, the multi-motor drive mechanism includes a housing, a driven wheel and at least two power components, the driven wheel is rotatably connected with the housing, and the at least two power components Simultaneously mesh with the passive wheel to drive the passive wheel to rotate; The power assembly includes: A motor connected to the housing; and The active part is connected with the output end of the motor and meshes with the passive wheel. The multi-motor drive mechanism according to claim 1, wherein the power assembly further comprises a transmission group, the transmission group meshes with the driving member and the driven wheel respectively, and the transmission group is gear transmission, Any of belt drive, chain drive, gear rack drive. The multi-motor drive mechanism according to claim 2, wherein the transmission group includes one or more double-layer gears, and the double-layer gears include a rotating shaft, a first-layer gear, and a second-layer gear. The rotating shaft is rotatably connected with the housing, the first layer gear and the second layer gear are stacked in the circumferential direction of the rotating shaft, and the diameter of the first layer gear is larger than that of the second layer gear. Diameter, the first layer gear meshes with the driving member, and the second layer gear meshes with the driven wheel. The multi-motor drive mechanism of claim 3, wherein the number of the double-layer gears is multiple, and the first-layer gear of one of the adjacent double-layer gears is connected to the adjacent double-layer gear. The second gear in the other gear meshes. The multi-motor drive mechanism according to claim 1, wherein the multi-motor drive mechanism further comprises a connecting shaft and a rotating member, the driven wheel is arranged on the connecting shaft, and the connecting shaft is connected to the housing The body is rotationally connected, and the rotating member is connected with the connecting shaft to rotate together with the connecting shaft. The multi-motor driving mechanism according to claim 5, wherein the multi-motor driving mechanism further comprises a protrusion, the protrusion is disposed on the rotating member and does not coincide with the axis of the connecting shaft. The multi-motor drive mechanism according to claim 6, wherein the multi-motor drive mechanism further comprises a swinging member, the swinging member is slidably connected to the housing, and a matching portion is provided on the swinging member, so The sliding direction of the mating part and the swinging member is not parallel, and the protrusion is inserted into the mating part. The multi-motor drive mechanism according to claim 7, wherein one of the housing and the swinging member is provided with a bump, and the other of the housing and the swinging member is provided with a sliding groove, The protrusion is slidably penetrated in the sliding groove. The multi-motor drive mechanism according to claim 1, wherein the driving member is a gear or a worm. A massager, characterized in that, the massager comprises the multi-motor drive mechanism according to any one of claims 1 to 9.

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