Massage head comb

Abstract

The application discloses a massage head comb, which comprises a shell, a cavity formed in the shell, a plurality of massage head assemblies, a piston mechanism movably inserted into a mounting hole of the comb, and an essential oil cylinder installed in the mounting hole and movably inserted into the piston mechanism. The massage head comb further comprises a motor, a first transmission gear set, a transmission shaft, and a second transmission gear set. The motor and the first transmission gear set are located in the cavity, and the second transmission gear set is located in the piston mechanism. The motor drives the massage head assemblies to move through the first transmission gear set, and the second transmission gear set is used for driving the piston mechanism to squeeze out essential oil in the essential oil cylinder. The first transmission gear set and the second transmission gear set are transmissionally connected through the transmission shaft. The first transmission gear set, the transmission shaft, and the second transmission gear set are cooperated with each other, so that the massage head assemblies and the piston mechanism can share the same motor power source, and additional driving equipment is not needed, thereby effectively reducing the overall weight and production cost of the massage head comb.

Description

Technical Field

[0001] This invention relates to the field of nursing equipment technology, and in particular to a massage comb. Background Technology

[0002] As people's living standards improve, they are paying more attention to health and wellness. Among these practices, scalp massagers are frequently used to relieve scalp strain. Massagers can also be used to treat hair, along with other treatments such as hair root care with massage, essential oils, red light therapy, and essential oil misting.

[0003] Currently, existing massage combs for this type of sports hair care use various methods when using essential oil dispensers. Some use steel balls to press the oil onto the scalp, while others use an independent peristaltic pump for automatic dispensing. More commonly, an independent motor is used to assist with automatic dispensing. These methods, which add power to assist the oil dispenser, not only increase the overall weight of the massage comb but also require a series of electrical controls and limiters for the new power equipment, leading to increased costs. Therefore, this application proposes a massage comb to solve these problems. Summary of the Invention

[0004] Based on this, in order to solve the problems existing in the prior art, this application provides a massage head comb, including a housing, the housing including a handle and a comb head, the comb head is annular and has a mounting hole in the middle, the handle and the comb head are internally connected and enclosed to form a cavity; Several massage head components are movably mounted on the comb. The piston mechanism has one end that is movably inserted into the mounting hole of the comb head. The essential oil cylinder is installed in the mounting hole, and one end of the piston mechanism is movably inserted into the essential oil cylinder. The device includes a motor, a first transmission gear set, a transmission shaft, and a second transmission gear set. The motor and the first transmission gear set are located inside the cavity, while the second transmission gear set is located inside the piston mechanism. The motor drives the massage head assembly to move through the first transmission gear set, and the second transmission gear set is used to drive the piston mechanism to squeeze the essential oil out of the essential oil cylinder. The first transmission gear set and the second transmission gear set are connected by a transmission shaft.

[0005] Furthermore, the piston mechanism includes a housing, a rotating cylinder, a piston assembly, and a screw drive assembly. The second drive gear is installed on the housing, and one end of the rotating cylinder is rotatably installed on the housing. Both ends of the rotating cylinder are open. A toothed ring is fixedly fitted on the outer wall of the housing. The toothed ring meshes with the second drive gear set. The piston assembly is movably inserted into the rotating cylinder. The screw drive assembly is used to cooperate with the rotating cylinder to drive the piston assembly to move in the essential oil cylinder and squeeze out the essential oil in the cylinder.

[0006] Furthermore, the screw drive assembly includes a guide rod, a worm spring, and a movable washer. The guide rod is used to limit the circumferential rotation of the piston assembly. The worm spring is fixedly sleeved on the piston assembly. The movable washer is slidably disposed at the opening at the end of the rotating cylinder inserted into the essential oil cylinder. The piston assembly passes through the movable washer, and the movable washer, in conjunction with the worm spring, drives the piston assembly to move along the direction of the guide rod.

[0007] Furthermore, the piston mechanism also includes a support pad, which is annular in shape, with lugs on both sides. A locking block is provided on the outer wall of the rotating cylinder, with the lugs abutting against the locking block. The movable pad is slidably disposed between the support pad and the rotating cylinder.

[0008] Furthermore, the piston assembly includes a piston rod and a piston head. The piston rod is movably inserted into the rotating cylinder, and a worm spring is fixedly sleeved on the piston rod. The piston rod has a guide hole. One end of the guide rod is fixed to the inner wall of the housing, and the other end is inserted into the guide hole. The other end of the piston rod extends to the outside of the rotating cylinder and is connected to the piston head. The piston head is interference-fitted with the inner wall of the essential oil cylinder.

[0009] Furthermore, the movable washer has a through hole with a diameter slightly larger than the overall diameter of the piston rod and worm spring. The movable washer has a flange on the side near the through hole, which extends toward the center of the through hole.

[0010] Furthermore, the edge of the movable shim is provided with an adjustment component, which is used to adjust the limiting state of the movable shim on the worm spring.

[0011] Furthermore, the adjustment assembly includes an adjustment block and an adjustment spring. The edge of the movable shim is provided with a mounting part. The adjustment block is fixedly installed on the mounting part. One end of the adjustment spring abuts against the mounting part, and the other end abuts against the outer wall of the rotating cylinder.

[0012] Furthermore, the piston mechanism also includes a return spring. The inner wall of the rotating cylinder near the piston head is provided with a groove, and the piston rod away from the piston head is provided with a protrusion. One end of the return spring is engaged in the groove, and the other end abuts against the protrusion.

[0013] Furthermore, the first transmission gear set includes planetary gears and multiple transmission gears. The planetary gears consist of a sun gear and multiple planetary gears, with each planetary gear corresponding to a set of massage head assemblies. The massage head assembly includes comb teeth, a hinge, a transmission block, and an eccentric column. The comb teeth are hinged to the comb head through the hinge, and the hinge is equipped with a rocker arm. The transmission block is slidably disposed in the cavity and has a first insertion hole and a second insertion hole. One end of the eccentric column is fixed to the position of the planetary gear off-center, and the other end is rotatably inserted into the first insertion hole. The rocker arm is movably inserted into the second insertion hole.

[0014] Beneficial effects: By setting up a first transmission gear set, a transmission shaft and a second transmission gear set to cooperate with each other, the massage head assembly and the piston mechanism can share the same motor power source, eliminating the need to add extra drive equipment, and effectively reducing the overall weight and production cost of the massage head comb. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the massage comb of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the massage head comb of the present invention; Figure 3 This is a schematic diagram of the massage head comb transmission assembly of the present invention; Figure 4 This is a schematic diagram of the structure of the massage head comb assembly of the present invention; Figure 5 This is a schematic diagram of the piston mechanism of the massage head comb of the present invention; Figure 6 This is a schematic cross-sectional view of the piston mechanism of the massage head comb of the present invention; Figure 7 This is a schematic diagram of the movable pad structure of the massage comb of the present invention; In the diagram: 1. Outer shell; 11. Handle; 12. Comb head; 121. Mounting hole; 2. Massage head assembly; 21. Comb teeth; 22. Hinge; 23. Rocker arm; 24. Transmission block; 241. First insertion hole; 242. Second insertion hole; 3. Piston mechanism; 31. Sleeve; 32. Rotating cylinder; 321. Gear ring; 322. Return spring; 323. Locking block; 324. Groove; 33. Piston rod; 331. Guide hole; 332. Protruding edge; 34. Guide rod; 35. Piston head; 36. Worm spring; 3 7. Movable gasket; 371. Through hole; 372. Flange; 373. Mounting part; 38. Adjustment assembly; 381. Adjustment block; 382. Adjustment spring; 39. Support gasket; 391. Hanging lug; 4. Oil cylinder; 41. Oil outlet pipe; 5. Motor; 51. Output shaft; 6. First transmission gear set; 61. Transmission wheel; 62. Planetary gear; 621. Sun gear; 622. Planetary gear; 7. Transmission shaft; 71. First shaft; 72. Second shaft; 8. Second transmission gear set; 9. Storage battery.

[0017] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0020] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0021] like Figures 1 to 3 As shown, this application provides a massage head comb, including: a housing 1, the housing 1 including a handle 11 and a comb head 12, the comb head 12 is annular and has a mounting hole 121 in the middle, the handle 11 and the comb head 12 are internally connected and surround to form a cavity; Several massage head assemblies 2 are movably mounted on the comb 12; Piston mechanism 3, one end of piston mechanism 3 is movably inserted into the mounting hole 121 of comb head 12; The essential oil cylinder 4 is installed in the mounting hole 121. The essential oil cylinder 4 is used to store essential oils. One end of the piston mechanism 3 is movably inserted into the essential oil cylinder 4. The motor 5, the first transmission gear set 6, the transmission shaft 7, and the second transmission gear set 8 are located inside the cavity. The second transmission gear set 8 is located inside the piston mechanism 3. The motor 5 drives the massage head assembly 2 to move through the first transmission gear set 6. The second transmission gear set 8 is used to drive the piston mechanism 3 to squeeze the essential oil in the essential oil cylinder 4. The first transmission gear set 6 and the second transmission gear set 8 are connected by the transmission shaft 7.

[0022] In this embodiment, the massage head assembly 2 is arranged in a ring along the outer wall of the comb head 12, and the piston mechanism 3 is detachably installed on the outer shell 1. When the piston mechanism 3 is inserted into the mounting hole 121 of the comb head 12, the piston mechanism 3 is snapped and fixed to the outer shell 1 at the comb head 12. The essential oil cylinder 4 is equipped with several oil outlet pipes 41. After the piston mechanism 3 applies pressure to the essential oil in the essential oil cylinder 4, the essential oil flows out from the oil outlet pipes 41. The motor 5 is installed inside the handle 11, and the motor 5 has an output shaft 51; The first transmission gear set 6 consists of multiple transmission gears and planetary gears. The output shaft 51 of the motor 5 is connected to the planetary gear 62 through multiple transmission gears 61. The planetary gear 62 includes a sun gear 621 and multiple planetary gears 622. The massage head assembly 2 is connected to the planetary gear through the planetary gears 622, which can simultaneously drive multiple massage head assemblies 2 to form an oscillating motion. One end of the transmission shaft 7 meshes with the sun gear 621 of the planetary gear. The second transmission gear set 8 consists of multiple transmission gears, and the other end of the transmission shaft 7 is connected to the piston mechanism 3 through multiple transmission gears (this is existing technology and will not be described in detail here). During operation, after the motor 5 starts, the output shaft 51 drives multiple transmission gears of the first transmission gear set 6 to rotate, which in turn drives the planetary gears to rotate. The auxiliary gears around the planetary gears drive each massage head assembly 2 to form a regular oscillating motion through the eccentric wheel, realizing the scalp massage function. At the same time, the main gear of the planetary gear drives the transmission shaft 7 to rotate synchronously. The transmission shaft 7 transmits power to the second transmission gear set 8. Through the deceleration and force amplification effect of multiple transmission gears, the piston mechanism 3 is driven to make linear motion in the essential oil cylinder 4. When the piston mechanism 3 pushes into the essential oil cylinder 4, it generates pressure on the essential oil in the cylinder. The pressurized essential oil then flows out evenly from each oil outlet pipe 41, directly acting on the scalp area in contact with the massage head assembly 2, realizing the simultaneous massage and essential oil care. In the entire transmission system, the first transmission gear set 6 and the second transmission gear set 8 share the same power source of the motor 5. Power distribution is achieved through the transmission shaft 7. The structure is compact, the transmission efficiency is high, and there is no need to add extra drive equipment, effectively reducing the weight of the massage head assembly 2 and the production cost. This application enables the massage head assembly 2 and the piston mechanism 3 to share the same power source of the motor 5 by setting the first transmission gear set 6, the transmission shaft 7 and the second transmission gear set 8 to cooperate with each other, so that the massage head assembly 2 and the piston mechanism 3 can share the same power source of the motor 5 without the need to add extra drive equipment, which effectively reduces the overall weight and production cost of the massage head assembly 2.

[0023] In one embodiment, the massage comb also includes a battery 9 disposed within the handle 11.

[0024] In this embodiment, the battery 9 provides independent power support for the electric function of the entire massage comb, freeing it from dependence on external power and improving portability.

[0025] In one embodiment, the drive shaft 7 includes a first shaft 71 and a second shaft 72. The first shaft 71 is rotatably mounted inside the housing 1, and the second shaft 72 is rotatably mounted inside the sleeve 31. One end of the second shaft 72 meshes with the second transmission gear set 8, and one end of the first shaft 71 meshes with the first transmission gear set 6. The other end passes through the housing 1 and extends into the sleeve 31 to form a surface connection with the other end of the second shaft 72.

[0026] In this embodiment, the first shaft 71 and the second shaft 72 are connected by a profile to achieve torque transmission, so that the rotational motion of the first transmission gear set 6 can be transmitted to the second transmission gear set 8 in sequence through the first shaft 71 and the second shaft 72, thereby driving the piston mechanism 3 to move. The profile connection can adopt a structure such as a square shaft or a hexagonal shaft to ensure that the two shafts can still maintain reliable circumferential transmission when they move relative to each other in the axial direction, while facilitating the disassembly and separation between the housing 31 and the comb head 12.

[0027] like Figure 4 As shown, in one embodiment, each planetary gear 622 corresponds to a set of massage head assemblies 2 for transmission; The massage head assembly 2 includes comb teeth 21, hinge 22, transmission block 24 and eccentric column 6221. The comb teeth 21 are hinged to the comb head 12 through the hinge 22. The hinge 22 is provided with a rocker arm 23. The transmission block 24 is slidably disposed in the cavity. The transmission block 24 has a first insertion hole 241 and a second insertion hole 242. One end of the eccentric column 6221 is fixed to the planetary gear 62 at a position off-center from the center, and the other end is rotatably inserted into the first insertion hole 241. The rocker arm 23 is movably inserted into the second insertion hole 242.

[0028] During operation, the planetary gear 622 rotates under the drive of the sun gear 621, and the eccentric column 6221 makes a circular motion around the axis of the planetary gear 622. This, in turn, drives the transmission block 24 to slide back and forth in the cavity through the first insertion hole 241. During the sliding process of the transmission block 24, the second insertion hole 242 drives the rocker arm 23 to swing around the hinge center of the hinge member 22, thereby driving the comb teeth 21 to swing periodically relative to the comb head 12, thus achieving the purpose of massage. Since each planetary gear 622 drives a set of massage head components 2, the multiple sets of massage head components 2 form staggered massage movements under the uniform distribution of the planetary gear system, simulating the rhythm of human hand kneading massage, and improving the comfort and stimulation uniformity of scalp massage.

[0029] like Figure 5 As shown, in one embodiment, the piston mechanism 3 includes a housing 31, a rotating cylinder 32, a piston assembly, and a helical transmission assembly. A second transmission gear is installed on the housing 31. One end of the rotating cylinder 32 is rotatably installed on the housing 31. Both ends of the rotating cylinder 32 are open. A toothed ring 321 is fixedly sleeved on the outer wall of the housing 31. The toothed ring 321 meshes with the second transmission gear set 8. The piston assembly is movably inserted into the rotating cylinder 32. The helical transmission assembly is used to cooperate with the rotating cylinder 32 to drive the piston assembly to move in the essential oil cylinder 4 and squeeze out the essential oil in the cylinder.

[0030] In this embodiment, the other end of the drive shaft 7 is connected to the gear ring 321 by multiple drive gears. When the motor 5 is started, the second drive gear set 8 drives the gear ring 321 to rotate the rotating cylinder 32. During the rotation of the rotating cylinder 32, in conjunction with the screw drive assembly, the piston assembly is pushed into the essential oil cylinder 4, thereby squeezing out the essential oil in the essential oil cylinder 4.

[0031] In one embodiment, the helical drive assembly includes a guide rod 34, a worm spring 36, and a movable washer 37. The guide rod 34 is used to limit the piston assembly from circumferential rotation. The worm spring 36 is fixedly sleeved on the piston assembly. The movable washer 37 is slidably disposed at the opening at one end of the rotating cylinder 32 that is inserted into the essential oil cylinder 4. The piston assembly passes through the movable washer 37. The movable washer 37, in conjunction with the worm spring 36, drives the piston assembly to move along the direction of the guide rod 34.

[0032] In this embodiment, the guide rod 34 is fixedly installed inside the housing 31 along the axial direction of the rotating cylinder 32. The guide rod 34 provides precise guidance for the movement of the piston assembly and prevents the piston assembly from rotating synchronously. The worm spring 36 forms a spiral groove structure on the outer wall of the piston assembly. When the piston mechanism 3 is inserted into the oil cylinder 4, the movable shim 37 will be inserted into the spiral groove structure formed by the outer wall of the piston assembly and the worm spring 36. At this time, when the rotating cylinder 32 rotates, the movable shim 37 will slide along the spiral groove structure. The worm spring 36 is limited by the movable shim 37, converting the rotational motion into axial linear motion, thereby pushing the piston assembly to smoothly advance into the oil cylinder 4 along the guide rod 34. When one end of the piston assembly moves to contact the bottom surface inside the oil cylinder 4, the movable washer 37 just slides out from the spiral groove structure at the end of the piston assembly away from the oil cylinder 4. At this time, the movable washer 37 disengages from the worm spring 36 and no longer limits the worm spring 36. If the rotating cylinder 32 continues to rotate, it will not drive the piston assembly to continue to advance, and it will not affect the massage head assembly 2 from continuing to perform massage movements.

[0033] In one embodiment, the piston mechanism 3 further includes a support pad 39, which is annular and has lugs 391 on both sides. The outer wall of the rotating cylinder 32 is provided with a locking block 323, and the lugs 391 are attached to the locking block 323. The movable pad 37 is slidably disposed between the support pad 39 and the rotating cylinder 32.

[0034] In this embodiment, the support pad 39 is detachably connected to the rotating cylinder 32 through the cooperation of the lug 391 and the locking block 323, which facilitates assembly and subsequent maintenance. The movable pad 37 is slidably installed on the end of the rotating cylinder 32 through the support pad 39.

[0035] In one embodiment, the piston assembly includes a piston rod 33 and a piston head 35. The piston rod 33 is movably inserted into the rotating cylinder 32, and the worm spring 36 is fixedly sleeved on the piston rod 33. The piston rod 33 has a guide hole 331. One end of the guide rod 34 is fixed to the inner wall of the housing 31, and the other end is inserted into the guide hole 331. The other end of the piston rod 33 extends to the outside of the rotating cylinder 32 and is connected to the piston head 35. The piston head 35 is interference-fitted with the inner wall of the essential oil cylinder 4.

[0036] In this embodiment, the guide hole 331 is a regular polygon, and the shape of the guide rod 34 matches the guide hole 331. The polygonal mating structure of the guide rod 34 and the guide hole 331 can effectively restrict the circumferential rotation of the piston rod 33, so that it can only move linearly along the axial direction, thereby ensuring that the piston head 35 is smoothly pushed forward in the oil cylinder 4. The piston head 35 is made of elastic material, and its outer diameter is slightly larger than the inner diameter of the essential oil cylinder 4. It achieves a tight fit with the inner wall of the essential oil cylinder 4 through an interference fit, ensuring the sealing of the essential oil. The piston rod 33 and the piston head 35 are connected by a threaded or snap-fit ​​structure, which makes it easy to replace the piston head 35 of different sizes according to the viscosity of the essential oil or the liquid output. The outer wall of the piston rod 33 and the worm spring 36 form a spiral groove structure. After the piston mechanism 3 is inserted into the oil cylinder 4, the movable shim 37 will be inserted into the spiral groove structure formed by the outer wall of the piston rod 33 and the worm spring 36. At this time, when the rotating cylinder 32 rotates, the movable shim 37 will slide along the spiral groove structure. The worm spring 36 is limited by the movable shim 37, converting the rotational motion into axial linear motion, thereby pushing the piston rod 33 and the piston head 35 to be smoothly pushed into the oil cylinder 4 along the guide rod 34. When the piston head 35 moves to contact the bottom surface inside the oil cylinder 4, the movable pad 37 just slides out from the spiral groove structure at the end of the piston rod 33 away from the oil cylinder 4. At this time, the movable pad 37 disengages from the worm spring 36 and no longer limits the worm spring 36. If the rotating cylinder 32 continues to rotate, it will not drive the piston rod 33 to continue to advance, and it will not affect the massage head assembly 2 from continuing to perform massage.

[0037] like Figure 6 As shown, in one embodiment, the movable pad 37 has a through hole 371, the diameter of which is slightly larger than the overall diameter of the piston rod 33 plus the worm spring 36. The movable pad 37 has a flange 372 on the side near the through hole 371, and the flange 372 extends toward the center of the through hole 371.

[0038] In this embodiment, the thickness of the flange 372 is matched with the pitch of the spiral groove structure to ensure that the movable pad 37 can be smoothly guided during sliding without shaking or jamming due to excessive gap. When the flange 372 is inserted into the spiral groove structure, the flange 372 limits the worm spring 36. The diameter of the through hole 371 is slightly larger than the overall diameter of the piston rod 33 plus the worm spring 36, which makes the distance between the flange 372 and the outer wall of the piston rod 33 adjustable, and at the same time facilitates the smooth passage of the piston rod 33 and the worm spring 36.

[0039] In one embodiment, the edge of the movable shim 37 is provided with an adjustment component 38, which is used to adjust the limiting state of the movable shim 37 on the worm spring 36.

[0040] In this embodiment, by setting the adjustment component 38, when the rotating cylinder 32 is inserted into the essential oil cylinder 4, the adjustment component 38 cooperates with the inner wall of the essential oil cylinder 4 to push the flange 372 of the movable pad 37 into the spiral groove structure formed by the outer wall of the piston rod 33 and the worm spring 36, thereby limiting the worm spring 36. When the rotating cylinder 32 is pulled out of the essential oil cylinder 4, the adjusting component 38 drives the movable shim 37 to reset, so that the flange 372 is away from the outer wall of the piston rod 33, thus preventing the worm spring 36 from being limited.

[0041] like Figure 7As shown, in one embodiment, the adjustment assembly 38 includes an adjustment block 381 and an adjustment spring 382. The edge of the movable shim 37 is provided with a mounting part 373. The adjustment block 381 is fixedly installed on the mounting part 373. One end of the adjustment spring 382 abuts against the mounting part 373, and the other end abuts against the outer wall of the rotating cylinder 32.

[0042] In this embodiment, when the rotating cylinder 32 is inserted into the essential oil cylinder 4, the inner wall of the essential oil cylinder 4 applies radial extrusion force to the adjusting block 381. At this time, the adjusting spring 382 is in a compressed state, pushing the movable pad 37 to move towards the center of the rotating cylinder 32, so that the flange 372 is accurately embedded in the spiral groove structure, thereby achieving reliable limiting of the worm spring 36. When the rotating cylinder 32 is pulled out of the essential oil cylinder 4, the squeezing force of the inner wall of the essential oil cylinder 4 on the adjusting block 381 disappears, the adjusting spring 382 rebounds, and drives the movable shim 37 to return to the initial position, so that the flange 372 is away from the outer wall of the piston rod 33, thus not causing a limit on the worm spring 36.

[0043] In one embodiment, the piston mechanism 3 further includes a return spring 322. The inner wall of the rotating cylinder 32 near the piston head 35 is provided with a groove 324, and the piston rod 33 away from the piston head 35 is provided with a protrusion 332. One end of the return spring 322 is engaged in the groove 324, and the other end abuts against the protrusion 332.

[0044] In this embodiment, when the piston head 35 is pushed to the bottom of the essential oil cylinder 4, all the essential oil inside the essential oil cylinder 4 is squeezed out. At this time, the return spring 322 is in a compressed state. If the rotating cylinder 32 is always in the essential oil cylinder 4, the flange 372 of the movable shim 37 will restrict the worm spring 36. At this time, the return spring 322 remains in a compressed state. When it is necessary to add essential oil to the essential oil cylinder 4, simply pull the entire piston mechanism 3 out of the essential oil cylinder 4. At this time, the movable shim 37 is reset under the action of the adjusting spring 382. The flange 372 of the movable shim 37 will not restrict the worm spring 36. At this time, under the action of the return spring 322, the piston rod 33, the piston head 35 and the worm spring 36 are driven back to the position before the push, which is convenient for the next push.

[0045] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A massage comb, characterized in that, include: The outer casing includes a handle and a comb head, the comb head being annular and having a mounting hole in the center, the handle and the comb head being internally connected and enclosing each other to form a cavity; A plurality of massage head assemblies, wherein the plurality of massage head assemblies are movably mounted on the comb; A piston mechanism, one end of which is movably inserted into the mounting hole of the comb head; An essential oil cylinder is installed in the mounting hole, and one end of the piston mechanism is movably inserted into the essential oil cylinder; The device includes a motor, a first transmission gear set, a transmission shaft, and a second transmission gear set. The motor and the first transmission gear set are located inside the cavity, and the second transmission gear set is located inside the piston mechanism. The motor drives the massage head assembly to move through the first transmission gear set, and the second transmission gear set drives the piston mechanism to squeeze the essential oil out of the essential oil cylinder. The first transmission gear set and the second transmission gear set are connected by the transmission shaft.

2. The massage comb according to claim 1, characterized in that, The piston mechanism includes a housing, a rotating cylinder, a piston assembly, and a helical transmission assembly. The second transmission gear is installed on the housing. One end of the rotating cylinder is rotatably installed on the housing. Both ends of the rotating cylinder are open. A toothed ring is fixedly fitted on the outer wall of the housing. The toothed ring meshes with the second transmission gear set. The piston assembly is movably inserted into the rotating cylinder. The helical transmission assembly is used to cooperate with the rotating cylinder to drive the piston assembly to move within the essential oil cylinder and squeeze out the essential oil within the cylinder.

3. The massage comb according to claim 2, characterized in that, The helical transmission assembly includes a guide rod, a worm spring, and a movable washer. The guide rod is used to restrict the piston assembly from rotating circumferentially. The worm spring is fixedly sleeved on the piston assembly. The movable washer is slidably disposed at the opening at one end of the rotating cylinder inserted into the essential oil cylinder. The piston assembly passes through the movable washer. The movable washer, in conjunction with the worm spring, drives the piston assembly to move along the direction of the guide rod.

4. The massage comb according to claim 3, characterized in that, The piston mechanism further includes a support pad, which is annular in shape and has lugs on both sides. The outer wall of the rotating cylinder is provided with a locking block, and the lugs are attached to the locking block. The movable pad is slidably disposed between the support pad and the rotating cylinder.

5. The massage comb according to claim 3, characterized in that, The piston assembly includes a piston rod and a piston head. The piston rod is movably inserted into the rotating cylinder. The worm spring is fixedly sleeved on the piston rod. The piston rod has a guide hole. One end of the guide rod is fixed to the inner wall of the housing, and the other end is inserted into the guide hole. The other end of the piston rod extends to the outside of the rotating cylinder and is connected to the piston head. The piston head is interference-fitted with the inner wall of the essential oil cylinder.

6. The massage comb according to claim 5, characterized in that, The movable washer has a through hole, the diameter of which is slightly larger than the overall diameter of the piston rod and the worm spring. The movable washer has a flange on the side near the through hole, and the flange extends toward the center of the through hole.

7. The massage comb according to claim 3, characterized in that, An adjustment component is provided on the edge of the movable shim, which is used to adjust the limiting state of the movable shim on the worm spring.

8. The massage comb according to claim 7, characterized in that, The adjustment assembly includes an adjustment block and an adjustment spring. The edge of the movable shim is provided with a mounting part. The adjustment block is fixedly installed on the mounting part. One end of the adjustment spring abuts against the mounting part, and the other end abuts against the outer wall of the rotating cylinder.

9. The massage comb according to claim 5, characterized in that, The piston mechanism also includes a return spring. The inner wall of the rotating cylinder near the piston head is provided with a groove, and the piston rod away from the piston head is provided with a protruding edge. One end of the return spring is engaged in the groove, and the other end abuts against the protruding edge.

10. The massage comb according to claim 1, characterized in that, The first transmission gear set includes planetary gears and multiple transmission gears. The planetary gears consist of a sun gear and multiple planetary gears, and each planetary gear corresponds to a set of massage head assemblies. The massage head assembly includes comb teeth, a hinge, a transmission block, and an eccentric column. The comb teeth are hinged to the comb head via the hinge, and the hinge is provided with a rocker arm. The transmission block is slidably disposed in the cavity and has a first insertion hole and a second insertion hole. One end of the eccentric column is fixed to the position of the planetary gear off-center, and the other end is rotatably inserted into the first insertion hole. The rocker arm is movably inserted into the second insertion hole.

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