Head massager

Abstract

This utility model provides a head massager, which includes a liquid filling component. The liquid filling component includes a liquid storage chamber and a liquid guide tube. The liquid guide tube is connected to the liquid storage chamber. A spring and a ball bearing are provided inside the liquid guide tube. The spring is used to push the ball bearing. The liquid guide tube includes a tube section and a sealing head. One end of the tube section is connected to the liquid storage chamber, and the sealing head is connected to the other end of the tube section away from the liquid storage chamber. The inner wall of the tube section includes a vertical inner cylindrical surface. The inner wall of the sealing head is an annular inclined surface. One end of the inclined surface is connected to the inner cylindrical surface, and the other end of the inclined surface extends inclinedly towards the axis of the liquid guide tube and forms a liquid outlet at the end. The ball bearing is located at the liquid outlet. The diameter of the ball bearing is smaller than the diameter of the inner wall of the tube section so that there is a liquid outlet gap between the maximum diameter position of the ball bearing and the inner cylindrical surface. The ball bearing has a sealed state and a liquid outlet state. When the liquid outlet is open, the liquid outlet gap is connected to the liquid outlet, allowing the liquid in the liquid storage chamber to flow out smoothly.

Description

Technical Field

[0001] This utility model relates to the field of massage equipment, and in particular to a head massager. Background Technology

[0002] Existing head massagers typically include a liquid filling component that stores liquids such as medications or essential oils and applies them to the scalp during use. The liquid filling tube is made of metal, with a spun-formed inward-curving sealing head at the lower end. Both the inner and outer surfaces of the sealing head are machined into arc shapes. Inside the metal tube are a spring and a ball bearing. The spring presses against the ball bearing, causing it to engage with the inner surface of the sealing head to seal the liquid outlet. Because the circular ball bearing also has an arc surface, even when it moves a certain distance into the liquid filling tube under pressure against the scalp, the inner surface of the sealing head and the outer surface of the ball bearing remain tightly fitted together with almost no or minimal gaps. The liquid cannot flow out automatically; it only slowly exits when the ball bearing rolls. Therefore, there are problems with liquid exit and easy clogging of the liquid outlet, resulting in a poor user experience for consumers. Utility Model Content

[0003] To at least solve one of the above-mentioned technical problems, one objective of this utility model is to provide a head massager that allows the liquid in the reservoir to flow out smoothly, making it convenient for users to apply medicine.

[0004] The head massager of this utility model embodiment includes a liquid filling assembly, which includes a liquid storage chamber and a liquid guide tube. The liquid guide tube is connected to the liquid storage chamber. A spring and a ball bearing are provided inside the liquid guide tube. The spring is used to push the ball bearing. The liquid guide tube includes a tube section and a sealing head. One end of the tube section is connected to the liquid storage chamber, and the sealing head is connected to the other end of the tube section away from the liquid storage chamber. The inner wall of the tube section includes a vertical inner cylindrical surface. The inner wall of the sealing head is an annular inclined surface. One end of the inclined surface is connected to the inner cylindrical surface, and the other end of the inclined surface extends obliquely towards the axis of the liquid guide tube and forms a liquid outlet at the end. The ball bearing is disposed at the liquid outlet. The diameter of the ball bearing is smaller than the diameter of the inner wall of the tube section so that there is a liquid outlet gap between the maximum diameter position of the ball bearing and the inner cylindrical surface. The ball bearing has a sealed state and a liquid outlet state.

[0005] In the sealed state, the ball is in close contact with the inclined surface to seal the liquid outlet; in the dispensing state, when the ball is subjected to external force, it overcomes the elastic force of the spring and moves away from the liquid outlet, the liquid outlet opens, and the liquid outlet gap communicates with the liquid outlet.

[0006] In this embodiment of the invention, by setting the inner wall of the sealing head as an inclined surface, the ball bearing, under force, easily forms a gap with the inclined surface to open the liquid outlet. Furthermore, a liquid outlet gap is formed between the ball bearing and the inner wall of the tube, which communicates with the liquid outlet of the sealing head. Thus, when the liquid outlet is open during product use, the liquid in the storage chamber enters the guide tube and flows smoothly through the liquid outlet gap before exiting through the outlet. This makes it easier to apply the medicine / essential oil to the scalp, reducing or even eliminating the problem of slow liquid flow or blockage of the storage outlet, thus improving the comfort of product use.

[0007] In some embodiments, 2. on the axial section of the liquid guide tube, the vertical straight segment of the inner cylindrical surface is connected to the inclined straight segment of the inclined surface, and the included angle between the two is 155°~175°.

[0008] In some embodiments, the size of the liquid outlet gap between the maximum diameter position of the ball and the inner cylindrical surface is 0.03≤d1≤0.15mm.

[0009] In some embodiments, there is a clearance between the spring and the inner cylindrical surface, wherein the clearance is 0.05≤d2≤0.3mm.

[0010] In some embodiments, the inclined surface of the sealing head is formed by turning.

[0011] In some embodiments, the outer wall of the lower end of the tube is connected to the outer wall of the sealing head to form a smooth arc surface.

[0012] In some embodiments, the upper end of the tube connected to the liquid storage cavity is provided with an inner tube, the inner tube is sleeved inside the tube, and the end of the spring away from the ball abuts against the inner tube.

[0013] In some embodiments, the upper end of the tube connected to the liquid storage cavity is provided with a limiting step protruding into the tube, and the end of the spring away from the ball abuts against the limiting step.

[0014] In some embodiments, the outer wall of the upper end of the tube is provided with an outwardly protruding boss, the bottom wall of the liquid storage cavity is provided with a downwardly extending limiting post, the liquid guide tube is made of metal material, the liquid storage cavity and the limiting post are both made of plastic material, and the liquid guide tube and the limiting post are connected as one piece by injection molding.

[0015] In some embodiments, the head massager includes a comb head and a handheld part. The liquid dispensing component is disposed on the comb head. The comb head includes a first outer shell and a plurality of comb tooth groups. Each comb tooth group has a plurality of comb teeth, which are exposed outside the first outer shell. The handheld part is provided with a driving component, and the first outer shell contains a transmission component. The driving component drives the transmission component to move, thereby driving the comb teeth to swing inward and outward in the direction of the comb head to massage the head. The liquid guide tubes include a plurality of tubes, and the comb teeth surround the outer periphery of the plurality of liquid guide tubes. The length of the comb teeth protruding relative to the first outer shell is greater than the length of the liquid guide tubes protruding relative to the first outer shell.

[0016] In some embodiments, the comb head is provided with a hollowed-out portion, which is located between the comb teeth and the liquid guide tube.

[0017] In some embodiments, the liquid guide tubes are multiple, a lamp plate is provided below the liquid storage cavity, the lamp plate is provided with a lamp that emits infrared light, the lamp plate is provided with multiple first through holes, and the multiple liquid guide tubes are respectively sleeved on the lamp plate through the first through holes; and / or, a heating plate is provided below the liquid storage cavity, the heating plate is provided with multiple second through holes, and the multiple liquid guide tubes are respectively sleeved on the heating plate through the second through holes.

[0018] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a head massager according to one embodiment.

[0020] Figure 2 This is a cross-sectional schematic diagram of one embodiment of a head massager.

[0021] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0022] Figure 4 This is an exploded view of one embodiment of a head massager.

[0023] Figure 5 This is an exploded structural diagram of the comb-like components.

[0024] Figure 6 This is a schematic diagram of the structure of a ring gear.

[0025] Figure 7 It is a cross-sectional schematic diagram of the assembly of the liquid guide tube, spring, ball bearing, inner tube and boss.

[0026] Figure 8 yes Figure 7 A magnified view of a portion of point B in the middle.

[0027] Figure label: Comb head 1, hard shell 111, soft shell 112, hollow part 12, concave cavity 13, handheld part 2, second shell 21, liquid filling assembly 3, liquid storage box 31, liquid storage cavity 311, liquid guide tube 32, tube part 321, inner cylindrical surface 3211, sealing head 322, inclined surface 3221, liquid outlet 323, arc surface 324, spring 33, ball bearing 34, inner tube 35, boss 36, cover 37, limiting post 38, motor 41, gear set 42, ring gear 5, rib 51, comb tooth set 6, comb tooth 61, swing block 62, slot 621, pivot 63, light plate 7, first through hole 71, heating plate 8, second through hole 81, battery 9 Detailed Implementation

[0028] Although the present invention can be readily embodied in various forms of implementation, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is also understood that this specification should be regarded as an exemplary description of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0029] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0030] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, inside, outside, left, right, front, back, etc.) used to explain the structure and movement of the various components of this invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0031] It should also be noted that when the connection between components is described as "fixed to" or "set on" another component, the component can be directly on the other component or there may be an intervening component. When a component is described as "connected" to another component, it can be directly connected to the other component or indirectly connected to the other component.

[0032] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided to make the description of the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The drawings are merely illustrative of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0033] The preferred embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0034] This utility model relates to a head massager, with reference to... Figures 1 to 8 As shown, the head massager includes a comb head 1 and a handheld part 2. The comb head 1 has a liquid filling component 3 in its middle. The comb head 1 includes a first outer shell, which comprises a hard shell 111 and a soft shell 112 connected to each other. The comb head 1 also has multiple comb tooth groups 6, each comb tooth group 6 having several comb teeth 61 exposed outside the first outer shell. A transmission component is located within the space formed by the hard shell 111 and the soft shell 112. The transmission component includes a ring gear 5 and a wave-shaped rib 51 below the ring gear 5. The comb teeth 61 are connected to the soft shell 112 and exposed outside the first outer shell. The handheld part 2 has a second outer shell 21, which contains a drive component. The moving assembly includes a motor 41 and a gear set 42. Each comb tooth set 6 is connected to a swing block 62. The swing block 62 is pivotally mounted inside the first housing via a pivot 63. The swing block 62 is provided with a slot 621. The protruding rib 51 is inserted into the slot 621 of each swing block 62. The motor 41 drives the gear set 42 to rotate, and the gear set 42 drives the ring gear 5 to rotate. Through the cooperation of the protruding rib 51 and the slot 621, the comb teeth 61 are driven to swing back and forth in the direction close to the center of the comb head 1 and away from the center of the comb head 1, that is, to swing repeatedly in and out. The scalp is massaged by the movement of the comb teeth. The opening and closing massage mode of the comb teeth simulates the hand grasping massage mode, and the massage effect is good.

[0035] Among them, such as Figure 4 As shown, the rigid shell 111 of the first outer shell can be integrally molded with the second outer shell 21 by injection molding. The second outer shell 21 is also equipped with a rechargeable battery 9, which supplies power to electronic components such as the motor 41 and the circuit board.

[0036] The liquid filling assembly 3 includes a liquid storage box 31 and multiple liquid guide tubes 32. The liquid storage box 31 has a liquid storage cavity 311 inside, and the liquid storage box 31 is assembled in the cavity 13 on the rigid shell 111. Of course, in other embodiments, the liquid storage cavity can also be formed directly on the rigid shell 111, eliminating the need for the liquid storage box.

[0037] The liquid storage chamber 311 is located in the central area of ​​the first outer shell. The liquid storage chamber 311 is equipped with a cover 37 that can be opened and closed. Opening the cover 37 allows liquid to be introduced into the liquid storage chamber 311 for storage, so the liquid in the liquid storage chamber 311 can be used for a period of time before needing to be refilled, making it convenient for users. The liquid guide tube 32 communicates with the liquid storage chamber 311. The liquid guide tube 32 contains a spring 33 and a ball bearing 34. The spring 33 pushes the ball bearing 34. The liquid guide tube 32 includes a tube section 321 and a sealing head 322. One end of the tube section 321 is connected to the liquid storage chamber 311, and the sealing head 322 is connected to the other end of the tube section 321 away from the liquid storage chamber 311. The inner wall of the tube section 321 includes a vertical inner cylindrical surface 3211. When the comb head 1 is circular, the "vertical" direction of the inner wall of the tube section basically refers to a direction parallel to the axis of the comb head 1, i.e., it can be like... Figure 2 The indicated direction of the head massager is up and down. The inner wall of the sealing head 322 is an annular inclined surface 3221. One end of the inclined surface 3221 is connected to the inner cylindrical surface 3211, and the other end of the inclined surface 3221 extends inclinedly towards the axis of the liquid guide tube 32, forming a liquid outlet 323 at the extended end. A ball bearing 34 is disposed at the liquid outlet 323 to seal or open the liquid outlet. Therefore, the ball bearing 34 has a sealed state and a liquid outlet state. The diameter of the ball bearing is smaller than the diameter of the inner wall of the tube so that there is a liquid outlet gap between the maximum diameter position of the ball bearing and the inner cylindrical surface. Figure 8 As shown, the liquid outlet gap d1 mainly refers to the minimum distance between the outer wall of the ball 34 and the inner wall of the inner tube 35 in the radial direction of the liquid guide tube.

[0038] Normally, when the product is not in use, the ball bearing is in a sealed state. The ball bearing 34 is pushed by the spring, so that the ball bearing 34 can make close contact with the inclined surface 3221 to seal the liquid outlet 323. The sealing effect of the ball bearing and the inclined surface is better than the sealing effect of the ball bearing and the curved surface in the prior art. Normally, when the product is in use, the ball bearing is in the liquid dispensing state because of the force of the scalp. The ball bearing 34 overcomes the elastic force of the spring 33 due to the external force and moves away from the liquid outlet 323, and the liquid outlet 323 opens. At this time, the liquid dispensing gap between the maximum diameter position of the ball bearing 34 and the inner cylindrical surface 3211 is connected to the liquid outlet 323, so that the liquid in the liquid storage chamber 311 enters the liquid guide tube 32, flows through the liquid dispensing gap, and flows out from the liquid outlet 323 to be applied to the scalp. The liquid stored in the reservoir can be hair growth essential oil, which can promote the growth of the user's hair, or it can be a medicinal liquid with therapeutic effects, used to treat headaches or relieve head fatigue. The liquid can also be other substances added according to the user's own needs, such as shampoo or water.

[0039] By setting the inner wall of the sealing head as an inclined surface, and since the surface of the ball is an arc, the ball's movement under force easily forms a gap with the inclined surface to open the liquid outlet. Furthermore, a liquid outlet gap is formed between the ball and the inner wall of the tube, which is connected to the liquid outlet of the sealing head. In this way, when the liquid outlet is open during product use, the liquid in the reservoir can flow smoothly through the liquid outlet gap after entering the guide tube, making it easier to apply the medicine / essential oil to the scalp. This reduces or even avoids the problem of the liquid flowing out too slowly or the reservoir being blocked, thus improving the comfort of product use.

[0040] like Figure 8 As shown, on the axial cross-section of the liquid guide tube 32, the vertical straight segment of the inner cylindrical surface 3211 is connected to the inclined straight segment of the inclined surface 3221, and the included angle α formed between them is 150°~175°. Preferably, as shown... Figure 8 The angle between the vertical straight line segment of the inner cylindrical surface 3211 and the inclined straight line segment of the inclined surface 3221 is 168°.

[0041] Setting the included angle α to 150°~175° means setting the inclined surface to a relatively steep angle. This makes the sealing position between the inclined surface and the ball closer to the maximum diameter of the ball. This allows a larger portion of the ball (e.g., no less than 1 / 3 of the total volume of the ball) to be exposed outside the liquid guide tube, so that the scalp can have a larger contact area with the ball during massage, thereby effectively propelling the ball's movement.

[0042] like Figure 8 As shown, the liquid outlet gap d1 between the maximum diameter position of the ball bearing 34 and the inner cylindrical surface 3211 can be 0.03≤d1≤0.15mm. Maintaining the liquid outlet gap within the range of 0.03≤d1≤0.15mm ensures that the liquid outlet speed is kept within a suitable range, avoiding either insufficient dispensing due to slow dispensing or waste of medicine or essential oil due to excessive dispensing speed. The radial direction of the liquid guide tube is perpendicular to its axial direction.

[0043] There is a clearance d2 between the spring 33 and the inner cylindrical surface 3211, and the size of the clearance d2 can be 0.05≤d2≤0.3mm. Figure 8As shown, the clearance d2 mainly refers to the minimum distance between the outer surface of the spring 33 and the inner wall of the inner tube 35 in the radial direction of the liquid guide tube 32. In the prior art, the spring and the inner cylindrical surface of some products are in close contact with each other with almost no gap. When the ball is subjected to force and moves upward away from the liquid outlet, the lower end of the spring in contact with the ball will be trapped in the gap between the ball and the inner cylindrical surface, making the liquid outlet gap smaller or even blocking the liquid outlet gap, resulting in a slow liquid outflow speed or even no liquid outflow. This application designs a certain gap between the spring and the inner cylindrical surface to ensure a more suitable liquid outflow speed. The clearance is designed to be 0.05≤t≤0.3mm. This not only ensures a suitable liquid outflow speed, but also avoids the problem of designing an excessively large clearance, which would make the spring too small, resulting in insufficient spring force and insufficient pushing force on the ball, or easy deformation of the spring.

[0044] The inclined surface 3221 of the sealing head is formed by turning. The inclined surface machined by turning has the advantages of high precision and good dimensional stability, which allows the ball to form a tight fit with the inclined surface, resulting in a good sealing effect on the liquid outlet. In the liquid discharge state, the inclined surface can also maintain a good gap with the ball to achieve the required liquid discharge speed.

[0045] The outer wall of the lower end of the tube 321 connects with the outer wall of the sealing head 322 to form a smooth arc surface 324. By making the outer wall of the sealing head and the outer wall of the lower end of the tube both arc surfaces, a smooth transition can be achieved at the connection between the outer walls of the sealing head and the tube, and the connection is smooth with the surface of the sealing head, avoiding sharp corners at the lower end of the liquid guide tube that could scratch the scalp or hands.

[0046] like Figure 3 and Figure 7 As shown, the upper end of the tube 321 connected to the liquid storage chamber is provided with an inner tube 35, which is sleeved inside the tube 321. The end of the spring 33 away from the ball 34 abuts against the lower end of the inner tube 35. The inner tube can limit the end of the spring away from the ball, preventing the spring from detaching from the tube. By using the inner tube alone to limit the spring, the tube structure of the liquid guide tube is simple and easy to manufacture.

[0047] In some other embodiments, the upper end of the tube 321 connected to the liquid storage chamber 311 is provided with a limiting step protruding inward, and the end of the spring 33 away from the ball 34 abuts against the limiting step. The limiting step can also limit the end of the spring away from the ball, preventing the spring from disengaging from the tube. The limiting step is provided inwardly, and can be formed directly on the tube without the need for additional components or assembly, which helps to save on the number of parts and processes, resulting in higher production efficiency.

[0048] like Figure 3As shown, the outer wall of the upper end of the tube 321 is provided with an outward protrusion 36, the bottom wall of the liquid storage cavity 311 is provided with a downward extending limiting post 38, the liquid guide tube 32 is made of metal material, and the liquid storage cavity 311 and the limiting post 38 are both made of plastic material. The liquid guide tube 32 and the limiting post 38 are connected as one piece by injection molding.

[0049] When injection molding the liquid storage cavity and the limiting post, the metal liquid guide tube is first placed into the mold, and then plastic is injected into the mold. The liquid guide tube is wrapped by the molten plastic of the limiting post. The protrusion can make the connection between the limiting post and the liquid guide tube more secure, effectively preventing the limiting post and the liquid guide tube from loosening and separating.

[0050] All the teeth 61 of the multiple comb groups 6 are circumferentially distributed and surround the outer periphery of the multiple liquid guide tubes 32. The length of the comb teeth 61 protruding relative to the first outer shell is greater than the length of the liquid guide tubes 32 protruding relative to the first outer shell. That is, as shown... Figure 2 As shown, in the vertical direction of the head massager, both the comb teeth 61 and the liquid guide tube 32 extend downward from the first outer shell, and the lower end of the comb teeth is lower than the lower end of the liquid guide tube. Since the human head is round, this allows the longer outer circumference of the comb teeth to also contact the scalp when the liquid guide tube comes into contact with the scalp. This allows the comb teeth to swing and massage and apply the liquid simultaneously. The massage of the comb teeth promotes the absorption of the liquid and improves the comfort of using the product.

[0051] The comb head 1 has a hollow section 12, which is located between the annularly distributed comb teeth 61 and the central liquid guide tube 32. By providing a hollow section in the comb head, the hollow section can serve as a hanging hole, allowing the head massager to be hung on other objects or on the wall through the hollow section, making the head massager easier to store and saving storage space; in addition, the hollow section can separate the central heating component area from the outer comb tooth area, thus reducing the problem of mutual interference between the components in the central area and the outer area.

[0052] Below the liquid storage chamber 311 is a lamp plate 7, which is equipped with a lamp that emits infrared light. The lamp plate 7 has multiple first through holes 71, and multiple liquid guide tubes 32 pass through the first through holes 71 and are fitted onto the lamp plate 7. For example... Figure 4 As shown, both the liquid guide tube 32 and the infrared lamp plate are located in the central area of ​​the comb 1, inside the hollow part 12. By fitting the liquid guide tube onto the lamp plate, the assembly structure of the lamp plate and the liquid guide tube is simple and robust. Furthermore, the liquid outlet and the infrared light therapy are located in the same central area of ​​the comb. This allows the applied liquid and infrared light therapy to act simultaneously on the same area of ​​the scalp when using the head massager. The infrared rays help promote the absorption of the liquid, improving the scalp's absorption of hair growth essential oils or medicinal solutions.

[0053] A heating plate 8 is located below the liquid storage chamber 311. The heating plate is used for heat therapy on the scalp. The heating plate 8 has multiple second through holes 81, and multiple liquid guide tubes 32 pass through the second through holes 81 and are sleeved on the heating plate 8. Figure 4 The liquid guide tube 32 and the heating plate 8 are both located in the central area of ​​the comb 1, inside the hollowed-out portion 12. By fitting the liquid guide tube onto the heating plate, the assembly structure of the heating plate and the liquid guide tube is simple and robust. Furthermore, the liquid outlet and the heat application are both located in the same central area of ​​the comb. Once the liquid flows out of the outlet tube, it can be quickly heated and applied to the scalp below this central area, which helps to rapidly promote liquid absorption and improves the scalp's absorption of hair growth oil or medication. Moreover, the heating element can be used independently to heat the scalp and promote blood circulation in the head, regardless of whether medication is being used.

[0054] Although this application has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Because this application can be embodied in many forms without departing from the spirit or essence of the embodiments, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A head massager characterized by comprising: The device includes a liquid filling assembly, which comprises a liquid storage chamber and a liquid guide tube. The liquid guide tube communicates with the liquid storage chamber and contains a spring and a ball bearing. The spring pushes the ball bearing. The liquid guide tube includes a tube section and a sealing head. One end of the tube section is connected to the liquid storage chamber, and the sealing head is connected to the other end of the tube section away from the liquid storage chamber. The inner wall of the tube section includes a vertical inner cylindrical surface, and the inner wall of the sealing head is an annular inclined surface. One end of the inclined surface is connected to the inner cylindrical surface, and the other end of the inclined surface extends inclinedly towards the axis of the liquid guide tube and forms a liquid outlet at the end. The longitudinal section of the inclined surface is an inclined straight line segment. The ball bearing is located at the liquid outlet, and its diameter is smaller than the diameter of the inner wall of the tube section so that there is a liquid outlet gap between the maximum diameter position of the ball bearing and the inner cylindrical surface. The ball bearing has a sealed state and a liquid outlet state. In the sealed state, the ball is in close contact with the inclined surface to seal the liquid outlet; in the dispensing state, when the ball is subjected to external force, it overcomes the elastic force of the spring and moves away from the liquid outlet, the liquid outlet opens, and the liquid outlet gap communicates with the liquid outlet.

2. The head massager of claim 1, wherein On the axial cross-section of the liquid guide tube, the vertical straight line segment of the inner cylindrical surface is connected to the inclined straight line segment of the inclined surface, and the included angle between the two is 155°~175°.

3. The head massager of claim 1, wherein The size of the liquid outlet gap between the maximum diameter position of the ball and the inner cylindrical surface is 0.03≤d1≤0.15mm; and / or, the spring and the inner cylindrical surface have a clearance gap, the clearance gap being 0.05≤d2≤0.3mm.

4. The head massager of claim 1, wherein The inclined surface of the sealing head is formed by turning.

5. The head massager of claim 1, wherein The outer wall of the lower end of the tube is connected to the outer wall of the sealing head to form a smooth arc surface.

6. The head massager of claim 1, wherein The upper end of the tube connected to the liquid storage cavity is provided with an inner tube, which is sleeved inside the tube. The end of the spring away from the ball abuts against the inner tube; and / or, the upper end of the tube connected to the liquid storage cavity is provided with a limiting step protruding into the tube, and the end of the spring away from the ball abuts against the limiting step.

7. The head massager of claim 1, wherein The outer wall of the upper end of the tube is provided with an outward protrusion, and the bottom wall of the liquid storage cavity is provided with a downward extending limiting post. The liquid guide tube is made of metal material, and the liquid storage cavity and the limiting post are both made of plastic material. The liquid guide tube and the limiting post are connected as one piece by injection molding.

8. The head massager of claim 1, wherein, The head massager includes a comb head and a handheld part. The liquid filling component is disposed on the comb head. The comb head includes a first outer shell and multiple comb tooth groups. Each comb tooth group has several comb teeth, which are exposed outside the first outer shell. The handheld part is provided with a driving component, and the first outer shell contains a transmission component. The driving component drives the transmission component to move, thereby driving the comb teeth to swing inward and outward in the comb head to massage the head. Multiple liquid guide tubes are included, and the comb teeth surround the outer periphery of the multiple liquid guide tubes. The length of the comb teeth protruding relative to the first outer shell is greater than the length of the liquid guide tubes protruding relative to the first outer shell.

9. The head massager of claim 8, wherein, The comb head has a hollowed-out section, which is located between the comb teeth and the liquid guide tube.

10. The head massager of claim 1, wherein, The liquid guiding tubes are multiple, and a lamp plate is provided below the liquid storage cavity. The lamp plate is provided with a lamp that emits infrared light. The lamp plate is provided with multiple first through holes, and the multiple liquid guiding tubes pass through the first through holes and are sleeved on the lamp plate; and / or, a heating plate is provided below the liquid storage cavity. The heating plate is provided with multiple second through holes, and the multiple liquid guiding tubes pass through the second through holes and are sleeved on the heating plate.

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