Motion transmission mechanism of massager

Abstract

The utility model discloses a motion transmission mechanism of a massager, relates to the technical field of massage instruments, and aims to realize efficient output of various massage actions in miniaturized massage equipment. Comprising a driving part, a gear set, an eccentric wheel, a first transmission path, a first massage head, a second transmission path and a second massage head, the driving piece is provided with double output shafts which are arranged on the two sides of the driving piece correspondingly. The gear sets are respectively driven by corresponding output shafts of the driving piece; the eccentric wheel is driven by a gear set to rotate; the first transmission path is used for converting the rotary motion of the eccentric wheel into rotary swing of the first massage head, and the second transmission path is used for converting the rotary motion of the eccentric wheel into front-back swing of the second massage head. Two different massage actions can be output by a single power source at the same time, two paths work cooperatively so that the massager can output two hand-imitated massage actions of rotating, swinging and kneading and front and back pressing at the same time, and the massager has the effects of reducing cost, reducing size and reducing energy consumption.

Description

TECHNICAL FIELD

[0001] The utility model relates to massage instrument technical field especially a motion transmission mechanism of massager. BACKGROUND

[0002] Nowadays, the massager has become the common equipment of modern people's daily health care, and it drives the massage head to simulate the hand to knead, knock, press and the like through the mechanical transmission mechanism. In order to improve the real feeling and comfort of massage, the market expects that the massager can reproduce more complex composite motion close to the hand, for example, simultaneously realizes the massage function for different parts or different methods.

[0003] At present, the common massager transmission mechanism is mostly by one drive motor output one kind of motion form. For example, through the motor drive eccentric wheel, can drive the massage head to do the circumferential kneading motion, or through another set of connecting rod mechanism, realizes the front and back swing of massage head.

[0004] However, the mechanism of this single motion mode is difficult to meet the needs of the user to the diversification, coordination massage experience. If wanting to integrate two different massage actions on a device, such as one massage head does circumferential motion, another massage head does front and back swing, the common solution of prior art is to set up two independent drive motors and two sets of transmission system, respectively drive different massage heads. Although this scheme can realize the function, but inevitably leads to the complex structure of the whole machine, the increase of the number of parts, the large volume, the high manufacturing cost, and the greater energy consumption, which is very unfavorable to the massager, especially the miniaturization, light weight and cost control of portable or wearable massager product. UTILITY MODEL CONTENTS

[0005] The utility model discloses a motion transmission mechanism of massager, and aims at how to realize the efficient output of multiple massage actions in the limited installation space through the simplified transmission structure in the miniaturization massage equipment.

[0006] The utility model discloses a technical scheme: including drive part, gear set, eccentric wheel, first transmission path, first massage head, second transmission path and second massage head, drive part has double output shaft, and is divided and located at the both sides of drive part, gear set is driven respectively by the corresponding output shaft of drive part, eccentric wheel is driven rotation by gear set, first transmission path is used for converting the rotation of eccentric wheel into the gyration swing of first massage head, second transmission path is used for converting the rotation of eccentric wheel into the back and forth swing of second massage head, wherein, first transmission path includes inclined bar, rocker and fixedly arranged spherical base, the top of inclined bar is fixedly connected to the bottom of eccentric wheel, and the bottom of inclined bar is coaxially connected with rocker, and the top side of rocker has a hemisphere, and the spherical base is provided with a spherical groove, and the hemisphere is matched with the spherical groove, and the bottom side of rocker is used for connecting first massage head, second transmission path includes eccentric ring rod, connecting arm, swing lever and fixed base, eccentric ring rod has a ring part and eccentric rod part extending from the ring part, the ring part is arranged on the eccentric position of eccentric wheel, the eccentric rod part is connected with one end of connecting arm, the other end of connecting arm is hinged with the top of swing lever, and the middle part of swing lever is hinged on fixed base, and the bottom side of swing lever is used for connecting second massage head.

[0007] Adopt the above technical scheme, through one double output shaft's drive part cooperation one eccentric wheel, cleverly shunt and drive two independent transmission paths, thereby realized single power source simultaneously output two completely different massage actions, compared with traditional multiple drive part scheme, the mechanism volume and the number of parts are simplified, and the assembly complexity and manufacturing cost are reduced, wherein, first transmission path utilizes the cooperation structure of inclined bar - rocker - spherical base, and the rotation of eccentric wheel is converted into the gyration swing of first massage head, and the adaptive design of spherical groove and hemisphere provides stable swing fulcrum for rocker, ensures that the motion trajectory is accurate and the action is stable, avoids the decline of massage comfort caused by motion deviation, second transmission path is hinged by eccentric ring rod - connecting arm - swing lever, and the rotation of eccentric wheel is converted into the back and forth swing of second massage head, realizes the action differentiation with first massage head, and the two paths work together to make the massager can simultaneously output gyration swing kneading and front and back pressing two kinds of imitated human hand massage actions, enriches the massage method, improves the muscle relaxation effect, solves the problem that the experience of traditional single action massager is single, has the effects of cost reduction, volume reduction and energy consumption reduction, and is especially favorable to the miniaturization and light weight of massager product.

[0008] In a possible design, the eccentric wheel includes an eccentric part located at an eccentric position, which is in the shape of a cylinder eccentric to the axis of the eccentric wheel, and the outer diameter of the eccentric part is adapted to the inner diameter of the ring part.

[0009] With the above design, the assembly between the ring part of the eccentric ring rod and the eccentric part of the eccentric wheel is more convenient through the cylindrical surface cooperation. Compared with point contact or line contact, the radial shaking of the eccentric ring rod during rotation with the eccentric wheel is avoided, ensuring that the power output by the eccentric rod is stably transmitted to the connecting arm, thereby improving the consistency and reliability of the front and rear swinging of the second massage head, running smoothly and reducing noise and wear during movement, prolonging the service life of the mechanism.

[0010] In a possible design, the bottom side of the eccentric wheel is provided with an inclined slot, the inclined slot is fixedly inserted with the inclined rod through interference fit, and the axis of the inclined rod and the axis of the eccentric wheel form a preset angle, and the preset angle is in the range of 5°-30°.

[0011] With the above design, the interference fit ensures the firmness of the connection between the inclined rod and the eccentric wheel, preventing loosening under rotation and stress, and ensuring the accuracy and reliability of the movement of the first transmission path; and the inclined rod axis and the eccentric wheel axis are set to a preset angle of 5°-30°, which is an optimal choice to realize the ideal swinging trajectory of the massage head. The angle directly determines the size of the cone angle of the rocker, thereby optimizing the movement amplitude and intensity of the massage head, making the massage effect closer to the physiological needs; if the angle is too small, the amplitude will be insufficient, and if the angle is too large, it may cause structural interference or stress deterioration.

[0012] In a possible design, the top side of the eccentric wheel is provided with a coaxial polygonal inner groove; the gear set includes a worm, a turbine and a driven gear, the worm is arranged on the corresponding output shaft of the driving member, the turbine is engaged with the worm, and the driven gear is engaged with the turbine and has a polygonal protrusion at the bottom for adaptive insertion into the polygonal inner groove.

[0013] With the above design, the driven gear and the eccentric wheel are connected through the insertion mode of the polygonal inner groove and the polygonal protrusion, which can completely limit the relative rotation between the driven gear and the eccentric wheel, ensuring that the power of the gear set is transmitted to the eccentric wheel without loss, avoiding the decrease of transmission efficiency caused by slipping, realizing reliable transmission without relative rotation, and facilitating assembly and positioning, improving production efficiency and assembly accuracy.

[0014] In a possible design, the swing rod and the fixed base, the swing rod and the connecting arm, and the connecting arm and the eccentric rod part are connected through pin shafts.

[0015] With the above design, the pin shaft connection has the characteristics of simple structure, flexible rotation and strong bearing capacity, which can ensure smooth rotation of each hinge point, reduce friction resistance in the transmission process, and reduce energy loss.

[0016] In a possible design, limit shafts are outwardly protrudingly arranged on both sides of the hemispheres, limit holes are arranged on the spherical base, and the limit shafts are rotatably installed in the limit holes and can float up and down in the limit holes.

[0017] With the above design, the rocker is connected with the base through the spherical pair, and theoretically has the freedom of rotating around its own axis, and the excess freedom of the rocker in the horizontal direction is limited through the limiting shaft, and the adaptation of the hemispherical body and the spherical groove can effectively limit the self-rotation of the rocker, which meets the needs of the rocking of the rocker around the spherical groove and provides a floating allowance for the rocker, avoids structural interference, and ensures that the massage head always maintains the preset and stable working posture during the whole working process.

[0018] In a possible design, the driving member is a double-output-shaft brush motor.

[0019] With the above design, the brush motor has the advantages of large starting torque, simple speed regulation and low cost; the structural design of the double-output-shaft brush motor is suitable for the layout of the gear sets, can directly provide power for the gear sets on both sides, does not need to additionally set a power distribution mechanism, realizes bidirectional synchronous driving, simplifies the transmission chain, improves the driving efficiency, and makes the overall structure most simple and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic view of the internal structure of the utility model;

[0021] Figure 2 is a perspective sectional view of the utility model;

[0022] Figure 3 is a schematic view of the main structure of the utility model;

[0023] Figure 4 is a schematic view of part of the utility model;

[0024] Figure 5 is an exploded view of the utility model Figure 4 ;

[0025] Figure 6 is a schematic view of the first transmission path of the utility model;

[0026] Figure 7 is an exploded view of the utility model Figure 6 ;

[0027] Figure 8 is a schematic view of the eccentric wheel of the utility model;

[0028] Figure 9 is a schematic view of the second transmission path of the utility model;

[0029] Wherein, 1, drive piece; 2, gear set; 21, worm; 22, turbine; 23, driven gear; 231, polygonal protrusion; 3, eccentric wheel; 31, polygonal inner groove; 32, eccentric part; 33, inclined slot; 41, inclined rod; 42, rocker; 421, hemisphere; 422, limiting shaft; 43, spherical base; 431, spherical groove; 432, limiting hole; 51, eccentric ring rod; 511, ring part; 512, eccentric rod part; 52, connecting arm; 53, swing rod; 54, fixed base; 55, first pin shaft; 56, second pin shaft; 57, third pin shaft; 61, first massage head; 62, second massage head. DETAILED DESCRIPTION

[0030] As Figures 1 to 3 shown, a motion transmission mechanism of a massager simultaneously drives two transmission paths through a drive piece 1 to output two different massage actions, so as to realize compact structure and rich functions. Specifically, it includes the drive piece 1, a gear set 2, an eccentric wheel 3, a first transmission path, a first massage head 61, a second transmission path, and a second massage head 62. The drive piece 1 provides a power source for the entire mechanism, and the power is transmitted to the eccentric wheel 3 through the gear set 2. The eccentric wheel 3 synchronously drives the first transmission path and the second transmission path, respectively, to make the first massage head 61 swing in a circular manner and the second massage head 62 swing forward and backward, so as to finally realize a compound massage effect.

[0031] The drive piece 1 is preferably a brush motor with double output shafts, and the two output shafts respectively extend from two sides of the motor. A set of gear sets 2 is arranged on each output shaft. Taking one side as an example, the gear set 2 includes a worm 21 fixedly installed on the output shaft, a turbine 22 meshing with the worm 21, and a driven gear 23 with a variable transmission ratio with the turbine 22. The bottom center of the driven gear 23 is provided with a polygonal protrusion 231 protruding downward, such as a quadrilateral, a hexagon, etc.

[0032] As Figures 3 to 8 shown, the motion transmission mechanism further includes an eccentric wheel 3, which is in a stepped cylindrical structure. A polygonal inner groove 31 is formed in the top center of the eccentric wheel 3, which is matched with the shape of the polygonal protrusion 231, so that the driven gear 23 can drive the eccentric wheel 3 to rotate synchronously through the plug-in structure. An eccentric part 32 is arranged on the main body of the eccentric wheel 3, which is in a cylindrical shape, and the axis thereof is parallel to but deviates from the main axis of the eccentric wheel 3.

[0033] At the bottom of the eccentric wheel 3, at least one inclined slot 33 is formed at a position deviated from the center. The top end of an inclined rod 41 is fixedly inserted into the inclined slot 33 by interference fit. The axis of the inclined rod 41 and the axis of the eccentric wheel 3 form a preset angle a, and the optimal range of the preset angle a is between 5° and 30°, which is a key parameter of the movement track of the first massage head 61.

[0034] As shown in Figures 4 to 8 , the first transmission path is used to convert the rotary motion of the eccentric wheel 3 into the swinging motion of the first massage head 61, and the path mainly includes the inclined rod 41, the rocker 42 and the fixedly arranged spherical base 43.

[0035] The bottom end of the inclined rod 41 is coaxially connected to the top center of the rocker 42, and the top side of the rocker 42 has a smooth hemisphere 421. The spherical base 43 is fixedly installed on the internal frame of the massager, and the inside is provided with a spherical groove 431 matched with the hemisphere 421. Through the cooperation of the hemisphere 421 and the spherical groove 431, the rocker 42 is constrained to swing at multiple angles, but the spherical center position is relatively fixed. The bottom side of the rocker 42 is used to connect the first massage head 61.

[0036] In order to limit the self-rotation of the rocker 42 around its own axis, which will cause the first massage head 61 connected thereto to deflect uncontrollably, so that the contact surface of the first massage head 61 cannot act on the human body in a preset stable posture. Therefore, on both sides of the hemisphere 421, two coaxial limiting shafts 422 are integrally protruded radially outward. Correspondingly, a horizontally extending long circular limiting hole 432 is formed on the spherical base 43, and the ends of the two limiting shafts 422 are rotatably inserted into the corresponding limiting hole 432. The width of the limiting hole 432 in the horizontal direction and the diameter of the limiting shaft 422 form a sliding fit, thereby forming a strong constraint in the horizontal plane, effectively preventing the self-rotation of the rocker 42 around its axis; at the same time, the height of the limiting hole 432 in the vertical direction is greater than the diameter of the limiting shaft 422, which provides a space for the limiting shaft 422 to float up and down. In this way, it is ensured that the self-rotation is prevented while the multi-angle swinging motion of the rocker 42 through the spherical pair and the necessary axial buffering are not affected. Through this structure, the first massage head 61 can maintain a stable preset posture throughout the working process, perform a swinging kneading action, and avoid problems such as deflection of the massage head and poor massage effect caused by self-rotation.

[0037] The first transmission path working process: when the eccentric wheel 3 rotates, the top side of the rocker 42 is driven to make a spatial conical trajectory movement through the inclined rod 41 at an angle with the eccentric wheel 3, and the bottom end of the rocker 42 makes a circular rotation movement. Since the rocker 42 is connected to the massage head at the bottom end, the movement is finally transmitted to the first massage head 61 as a rolling and kneading movement on the contact surface.

[0038] As shown in Figures 2 to 5 , Figure 9 The second transmission path is used for converting the rotating movement of the eccentric wheel 3 into the forward and backward swinging of the second massage head 62, and mainly includes the eccentric ring rod 51, the connecting arm 52, the swing rod 53 and the fixed base 54.

[0039] The eccentric ring rod 51 is integrally formed by a ring part 511 and an eccentric rod part 512. The ring part 511 is sleeved on the eccentric part 32 of the eccentric wheel 3 and is in a relative rotating sleeve connection with the eccentric part 32. The eccentric rod part 512 is rotationally connected with one end of the connecting arm 52 through the first pin shaft 55, and the other end of the connecting arm 52 is hingedly connected with the top end of the swing rod 53 through the second pin shaft 56. The middle part of the swing rod 53 is hingedly connected to the fixed base 54 through the third pin shaft 57, and the fixed base 54 is fixed in the massage device, so that the connecting position of the swing rod 53 is in the interior of the massage device, avoiding being exposed outside to cause difficulty in sealing and improving the aesthetic appearance. The bottom side of the swing rod 53 is sleeved with the second massage head 62.

[0040] The second transmission path working process: when the eccentric wheel 3 rotates, the eccentric part 32 thereof makes a circular movement. Since the ring part 511 of the eccentric ring rod 51 is sleeved on the eccentric part 32, the circular movement of the eccentric part 32 pushes and pulls the eccentric ring rod 51, and then converts the reciprocating pushing and pulling force on the top end of the swing rod 53 through the connecting arm 52. Since the middle part of the swing rod 53 is hingedly connected to the fixed base 54, according to the lever principle, the bottom end of the swing rod 53 drives the second massage head 62 to swing in the forward and backward directions, so as to realize a massage effect similar to forward and backward pressing and kneading.

[0041] Summary of the working principle of the utility model:

[0042] Start the double-output shaft driving member 1, and power is transmitted to the eccentric wheel 3 through the worm gear sets 2 on both sides, so that the eccentric wheel 3 rotates at high speed. The rotating movement is simultaneously distributed to two paths:

[0043] The inclined rod 41 and the spherical surface matched rocker 42 output a rolling and swinging kneading movement to the first massage head 61.

[0044] The eccentric ring rod 51 and the connecting arm 52 and the like output a forward and backward swinging movement to the second massage head 62.

[0045] Through the above process, the first massage head 61 and the second massage head 62 are synchronized to perform the rolling and kneading and the forward and backward pressing actions, a compound massage effect is formed, and the whole mechanism only realizes power output through a single driving piece, so that the structure is compact and the operation is stable.

[0046] In addition, in an optional implementation, the angle between the inclined rod 41 and the axis of the eccentric wheel 3 can be adjusted within a reasonable range according to the massage requirements. For example, if it is required to enhance the swing movement amplitude of the first massage head 61, the angle can be appropriately increased. The transmission ratio of the gear set 2 can be realized by adjusting the tooth number of the turbine 22 and the driven gear 23, so as to meet different torque output requirements. The driving piece 1 can also be a double-output-shaft brushless motor, so as to improve the service life and adapt to high-end massager requirements.

Claims

1. A motion transmission mechanism of a massager, characterized by comprising: The drive member, gear set, eccentric wheel, first transmission path, first massage head, second transmission path and second massage head are included. The drive member has double output shafts and is arranged on both sides of the drive member; the gear set is driven by the corresponding output shaft of the drive member; the eccentric wheel is driven to rotate by the gear set. The first transmission path is used for converting the rotating motion of the eccentric wheel into the rotary swing of the first massage head, and the second transmission path is used for converting the rotating motion of the eccentric wheel into the forward and backward swing of the second massage head. The first transmission path includes a slanting rod, a rocker and a fixed spherical base, the top end of the slanting rod is fixedly connected to the bottom of the eccentric wheel, the bottom end of the slanting rod is coaxially connected with the rocker, the top side of the rocker has a hemisphere, the spherical base is provided with a spherical groove, the hemisphere is matched with the spherical groove, and the bottom side of the rocker is used for connecting the first massage head. The second transmission path includes an eccentric ring rod, a connecting arm, a swing rod and a fixed base, the eccentric ring rod has a circular ring part and an eccentric rod part extending from the circular ring part, the circular ring part is sleeved on the eccentric position of the eccentric wheel, the eccentric rod part is connected with one end of the connecting arm, the other end of the connecting arm is hingedly connected with the top end of the swing rod, the middle part of the swing rod is hingedly connected to the fixed base, and the bottom side of the swing rod is used for connecting the second massage head.

2. The massage apparatus of claim 1, wherein: The eccentric wheel includes an eccentric part, the eccentric part is located at the eccentric position, has a cylindrical shape eccentric to the axis of the eccentric wheel, and the outer diameter of the eccentric part is matched with the inner diameter of the circular ring part.

3. A movement transmission mechanism for a massager according to claim 1 or 2, characterized in that: The bottom side of the eccentric wheel is provided with a slanting slot, the slanting slot is fixedly inserted with the slanting rod through interference fit, the axis of the slanting rod and the axis of the eccentric wheel form a preset angle, and the preset angle ranges from 5° to 30°.

4. A movement transmission mechanism for a massager according to claim 1 or 2, characterized in that: The top side of the eccentric wheel is provided with a polygonal inner groove coaxial with the axis; the gear set includes a worm, a turbine and a driven gear, the worm is arranged on the corresponding output shaft of the drive member, the turbine is engaged with the worm, the driven gear is engaged with the turbine, and the bottom part of the driven gear has a polygonal protrusion matched with the polygonal inner groove.

5. The massage apparatus of claim 1 or 2, wherein: The swing rod and the fixed base, the swing rod and the connecting arm, and the connecting arm and the eccentric rod part are rotationally connected through a pin shaft.

6. The massage apparatus of claim 1 or 2, wherein: The two sides of the hemisphere are outwardly provided with limiting shafts, the spherical base is provided with limiting holes, the limiting shafts are rotationally installed in the limiting holes and can float up and down in the limiting holes.

7. A movement transmission mechanism for a massager according to claim 1 or 2, characterized in that: The drive member is a double-output-shaft brush motor.

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