Hair removal head

Abstract

The hair removing head comprises a fixed non-rotating center shaft, a rotating column assembly which is installed on the center shaft and rotates relative to the center shaft, a main body of the rotating column assembly is formed by stacking and connecting a plurality of roller units in the axial direction of the center shaft, and the center hole diameter of each roller unit is larger than the outer diameter of the center shaft. A plurality of clamping units are uniformly clamped between two adjacent roller units along the circumference, and each clamping unit comprises two clamping pieces which are respectively arranged on opposite roller walls of the two roller units and are exposed out of the roller units through the window grooves to form clamping nozzles, and two elastic bodies which are respectively clamped between the roller units and the clamping pieces; caulking grooves for embedding the clamping pieces are respectively formed in the wheel walls of the roller units, convex ribs abutting against the outer side surfaces of the clamping pieces are formed in the positions, close to the central holes of the roller units, in the caulking grooves in a protruding manner, and the clamp-shaped clamping units form clamp opening and closing fulcrums through the convex ribs abutting against the middle parts of the back surfaces of the clamp-shaped clamping units. The two clamping pieces of the clamp type clamping unit are assembled in a split mode, a clamp fulcrum is not provided with the clamping pieces, assembly of the hair removing head is simplified, and the consistency of the clamping unit is high.

Description

Technical Field

[0001] This utility model relates to a hair removal device, and more particularly to a hair removal head for an electric hair removal device. Background Technology

[0002] Hair removal devices are generally used to remove body hair. Existing hair removal devices are mainly characterized by low efficiency. Current electric hair removal devices primarily consist of a hair removal assembly and a motor drive. The hair removal assembly includes a hair removal bracket, side brackets, a central shaft, a cylindrical cam, a cylindrical roller assembly, a clamping plate assembly, and a return spring. The clamping plate assembly includes a stationary clamping plate and a movable clamping plate, i.e., a single-sided movable clamp. Hair clamping is achieved by the cylindrical cam and spring, which, when the clamping plate assembly rotates, clamps and opens the movable clamping plate relative to the stationary clamping plate. Its structure is compact and quiet. However, its efficiency is low; each clamping plate assembly can only clamp hair once per revolution. Furthermore, its structure limits the addition of multiple hair removal assemblies in the circumferential direction of the hair removal assembly, as this would affect the hair removal force and significantly increase production costs. Current clamp-type assemblies use hinges between the two clamping plates. Hinged clamps lack symmetry after assembly, placing pressure on the assembly process. Moreover, after rotation and prolonged use, the hinges may loosen, causing the clamps to not grip tightly. Summary of the Invention

[0003] This invention provides a hair removal head with a simplified structure, convenient assembly, and uniform, stable, and balanced clamping force.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a hair removal head, comprising a rotating column assembly with a fixed, non-rotating central shaft, mounted on the central shaft and rotating relative to the central shaft. The main body of the rotating column assembly is formed by stacking and connecting several roller units along the central shaft axial direction. The central hole diameter of the roller unit is larger than the outer diameter of the central shaft. Several clamping units are evenly clamped circumferentially between two adjacent roller units. Each clamping unit includes two clamping pieces respectively mounted on the opposing wheel walls of the two roller units and exposed through window slots to form clamping mouths, and two elastic bodies respectively clamping between the roller units and the clamping pieces. The wheel walls of the roller units are respectively provided with grooves for the clamping pieces to be embedded. A rib protrudes from the groove near the central hole of the roller unit to form abutment against the outer side of the clamping piece. The grooves on the opposing wheel walls of two adjacent roller units are combined to form a clamping head. The mounting slot contains two symmetrical and opposite clamping plates of the clamping unit. The distance between the ribs on the opposite wheel walls of the two roller units in the mounting slot is consistent with the thickness of the two clamping plates. The clamping unit, which is shaped like a clamp, forms a clamping fulcrum by the ribs abutting at the center of its back. Several leaf-shaped convex rails are arranged parallel to each other along the central shaft, corresponding to the lower part of the clamping unit. Each leaf-shaped convex rail includes several leaf-shaped convex rails radially distributed along the central shaft wall. The gap between two adjacent rows of leaf-shaped convex rails forms the moving track of the lower part of the clamping unit. The two leaf-shaped convex rails on the adjacent rows push against the outer side of the lower part of the clamping unit, so that when the lower part of the clamping unit is at the position of maximum width of the moving track, the clamping unit jaws are closed; when the lower part of the clamping unit is at the position of minimum width of the moving track, the clamping unit jaws are open.

[0005] As an improvement: the central shaft includes a central shaft and a positioning sleeve shaft sleeved on the central shaft with a leaf-shaped convex rail on its peripheral wall. The positioning sleeve shaft is connected in sections, that is, the positioning sleeve shaft is composed of a first positioning shaft section, several intermediate positioning shaft sections and a last positioning shaft section connected in sequence. The free ends of the first positioning shaft section and the last positioning shaft section are equipped with a stop structure for fixed connection.

[0006] As an improvement, the grooves on the front and back walls of the roller unit are staggered.

[0007] As an improvement, a projectile limiting hole for accommodating the projectile is opened on the wheel wall of the roller unit above the protruding rib in the groove, and the two projectiles act symmetrically on the upper part of the fulcrum of the clamping unit.

[0008] As an improvement: the head of the clip protruding from the window groove includes a clamping section and a winged guide section formed by bending outward at least one end of the clamping section. The winged guide section is bent outward at an angle of less than 45 degrees relative to the clamping section, so that the two opposing winged guide sections form a guide funnel that converges towards the clamping section at one end of the clamping unit.

[0009] As an improvement, the axial width of the window groove is greater than the sum of the thicknesses between the two clamping pieces, so that the clamping unit's jaws can be opened and closed at or above the window groove.

[0010] The beneficial effects of this utility model are as follows: the two clamping plates of the clamping unit are assembled separately, and the opening and closing fulcrum of the clamp is formed by the convex ribs on the roller unit. The main body of the rotating column assembly is formed by the stacking of units, that is, the clamping fulcrum is not integrated with the clamping plates, which greatly simplifies the assembly of the hair removal head. The consistency of the clamping units on the hair removal head is very strong. Compared with the existing pocket-shaped rotating column body, the central balance of this utility model is stronger, and the number of rings of the ring unit is more open. For the clamping unit, the clamps are symmetrically arranged. The opening and closing of the clamping unit is driven by the leaf-shaped convex rail. Specifically, during the rotation of the rotating column assembly, under the action of the spring, the outer sides of the two lower clamping feet of the clamping unit move against the side wall of the leaf-shaped convex rail with two tips and a middle belly, thereby realizing the opening and closing action of the jaw. The gap between two adjacent rows of leaf-shaped convex rails forms the moving track of the lower part of the clamping unit. The width of the moving track changes smoothly, so that the clamping force of the jaw is uniform, stable and balanced.

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the hair removal head of this utility model.

[0013] Figure 2 yes Figure 1 A sectional view.

[0014] Figure 3 This is a schematic diagram of an explosion of a hair removal head.

[0015] Figure 4 This is a structural diagram of the roller unit. Detailed Implementation

[0016] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be understood that the terms "connected," "joined," and "fixed," etc., used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or a welded connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction relationship of two components, unless otherwise explicitly defined. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0017] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, one embodiment of the hair removal head of this utility model includes a rotating column assembly with a fixed, non-rotating central shaft 5, mounted on the central shaft and rotating relative to the central shaft. The main body of the rotating column assembly is formed by stacking and connecting a certain number of roller units along the central shaft axis. The central hole diameter of the roller unit is larger than the outer diameter of the central shaft, thereby leaving room for the clamping feet of the clamping unit to move. In this embodiment, four clamping units are evenly clamped around the circumference between two adjacent roller units 1. Of course, the number of clamping units arranged around the circumference can be set as needed. The clamping unit includes two clamping pieces 2 respectively mounted on the opposite wheel wall of the two roller units and exposed through the window groove 4 to form a clamping mouth of the roller unit, and two elastic bodies 3 respectively clamped between the roller unit and the clamping pieces. The wheel wall of the roller unit is provided with a groove 11 for the clamping pieces to be embedded. A rib 12 protrudes from the groove near the central hole of the roller unit to form abutment against the outer side of the clamping piece. The rib 12 is a straight line extending with a certain length. An installation groove is formed by the combination of grooves on the opposing wheel walls of two adjacent roller units. Within this groove, two clamping plates 2 of the clamping unit are symmetrical and opposite each other. The distance between the ribs on the opposing wheel walls of the two roller units within the installation groove is equal to the thickness of the two clamping plates, forming a clamp-like clamping unit. This clamping unit, with its pincer-like shape, forms a clamping fulcrum by the rib abutting at the center of its back. This limits the clamping plates within the groove while ensuring the stability of the clamping fulcrum. To ensure balance on both sides of the clamping, a projectile-limiting hole 13 is provided on the roller unit's wheel wall above the rib 12 within the groove to accommodate projectiles. The two projectiles act symmetrically on the upper part of the clamping unit's fulcrum. The window groove has an axial width greater than the sum of the thicknesses between the two clamping plates, allowing the clamping unit's jaws to open and close at or above the window groove.

[0018] The central shaft 5 has several rows of leaf-shaped convex rails arranged parallel to each other along the shaft, corresponding to the lower part of the clamping unit. The number of rows of leaf-shaped convex rails is the same as the number of roller units. Each row of leaf-shaped convex rails includes four leaf-shaped convex rails 51 radially distributed along the central shaft wall. The gap between two adjacent rows of leaf-shaped convex rails forms the moving track of the lower part of the clamping unit. The two leaf-shaped convex rails on the adjacent rows push against the outer side of the lower part of the clamping unit, so that when the lower part of the clamping unit is at the position of maximum width of the moving track, the jaws of the clamping unit are closed; when the lower part of the clamping unit is at the position of minimum width of the moving track, the jaws of the clamping unit are open. In this embodiment, the two clamping feet of the clamping unit are respectively shaped like the number 7, and the length of the bottom edge 23 of the clamping piece forming the clamping foot is greater than the shortest chord distance between two adjacent leaf-shaped convex rails along the circumference of the same row of leaf-shaped convex rails, thereby ensuring that the clamping feet always move along the moving track. That is, the moving track provided by the two adjacent rows of leaf-shaped convex rails for the clamping unit clamping feet is a continuous closed loop.

[0019] For ease of assembly, the central shaft in this embodiment includes a central shaft and a positioning sleeve shaft fitted onto the central shaft with leaf-shaped convex rails on its peripheral wall. The positioning sleeve shaft is connected in sections, that is, the positioning sleeve shaft is formed by sequentially connecting a first positioning shaft section, several intermediate positioning shaft sections, and a final positioning shaft section. The free ends of the first and final positioning shaft sections have stop structures for fixed connection. Alternatively, the central shaft can be integrally formed, with stop structures for fixed connection at both ends. To improve hair removal efficiency, the grooves 11 on the front and back walls of the roller unit 1 are staggered in this embodiment.

[0020] In this embodiment, the head of the clip protruding from the window groove includes a clamping section 21 and a winged guide section 22 formed by bending outward at least one end of the clamping section. The winged guide section bends outward at an angle of less than 45 degrees relative to the clamping section; in this embodiment, it is about 15 degrees. This allows the two opposing winged guide sections to form a guide funnel that converges towards the clamping section at one end of the clamping unit's jaws. The guide funnel can guide hair into the clamping section of the jaws more quickly during opening and closing, improving hair removal efficiency.

[0021] Although the present invention has been disclosed above with specific embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of the appended claims.

Claims

1. An epilating head, characterized in that: The utility model discloses a rotating column assembly and fixed non-rotating middle shaft (5) of belt installation on middle shaft and relative middle shaft rotation, the main part of rotating column assembly is connected by the axial stacking of a plurality of gyro wheel units along middle shaft, the center hole diameter of gyro wheel unit is greater than the outer diameter of middle shaft, and a plurality of clamping units are clamped between two gyro wheel units (1) and are evenly arranged along the circumference, the clamping unit includes two clamping pieces (2) that are respectively installed on the opposite wheel wall of two gyro wheel units and are exposed to gyro wheel unit 1 and form the clamping mouth through window groove (4), two elastic bodies (3) that are respectively clamped between gyro wheel unit and clamping piece, the wheel wall of gyro wheel unit is provided with the embedding groove (11) that is embedded for clamping piece respectively, and the convex rib (12) that is formed on the top of embedding groove and is located the center hole of gyro wheel unit is formed and is used to abut the outer side of clamping piece, the embedding groove on the opposite wheel wall of two gyro wheel units is combined and forms the installation groove, and the two clamping pieces (2) of clamping unit are symmetrical and stand opposite in the installation groove, the distance between the convex rib on the opposite wheel wall of two gyro wheel units in the installation groove is consistent with the thickness of two clamping pieces, and the clamping unit of pincer type is formed through the convex rib that the back middle part of clamping unit abuts and forms the opening and closing branch point of clamping pincer, a plurality of leaf-shaped convex rail ring columns that are corresponding with the lower part of clamping unit are distributed on the shaft wall of middle shaft (5) and are parallel, and each leaf-shaped convex rail ring column includes a plurality of leaf-shaped convex rails (51) that are distributed along the radial direction of middle shaft, the gap between two adjacent leaf-shaped convex rails forms the moving track of the lower part of clamping unit, and the two leaf-shaped convex rails on adjacent columns abut and push the lower part of clamping unit and the outer side, so that when the lower part of clamping unit is located at the maximum width position of moving track, the clamping mouth of pincer type clamping unit is closed, and when the lower part of clamping unit is located at the minimum width position of moving track, the clamping mouth of pincer type clamping unit is opened.

2. The epilating head according to claim 1, characterized in that: The middle shaft includes a center shaft, a positioning sleeve shaft sleeved on the center shaft and provided with leaf-shaped convex rails on the peripheral wall, the positioning sleeve shaft is connected in a sectional manner, i.e., the positioning sleeve shaft is sequentially connected by a first section positioning shaft segment, a plurality of middle section positioning shaft segments and a last section positioning shaft segment, and the free ends of the first section positioning shaft segment and the last section positioning shaft segment are provided with stop structures for fixed connection.

3. The epilating head according to claim 1 or 2, characterized in that: The embedding grooves (11) on the front wheel wall and the back wheel wall of the gyro wheel unit (1) are arranged in a staggered manner.

4. The epilating head according to claim 1 or 2, characterized in that: The gyro body limiting holes (13) for accommodating the gyro bodies are formed above the convex ribs (12) in the embedding grooves on the wheel wall of the gyro wheel unit, and the two gyro bodies are symmetrically arranged above the branch points of the pincer type clamping unit.

5. The epilating head of claim 3, characterized in that: The gyro body limiting holes (13) for accommodating the gyro bodies are formed above the convex ribs (12) in the embedding grooves on the wheel wall of the gyro wheel unit, and the two gyro bodies are symmetrically arranged above the branch points of the pincer type clamping unit.

6. The epilating head according to claim 1 or 2, characterized in that: The head of the clamping piece exposure window groove includes a clamping section (21) and a folding wing guide section (22) formed by outwardly bending at least one end of the clamping section, the outward bending angle of the folding wing guide section away from the clamping section is less than 45 degrees, so that the two opposite folding wing guide sections form a guide funnel converging towards the clamping section at one end of the clamping mouth of the clamping unit.

7. The epilating head of claim 3, characterized in that: The head of the window slot exposed by the clamping piece comprises a clamping section, a flange guide section formed by outwardly bending at least one end of the clamping section, and the outward bending angle of the flange guide section away from the clamping section is less than 45 degrees, so that two opposite flange guide sections form a guide funnel converging towards the clamping section at one end of the clamping unit.

8. The epilating head of claim 4, characterized in that: The head of the window slot exposed by the clamping piece comprises a clamping section, a flange guide section formed by outwardly bending at least one end of the clamping section, and the outward bending angle of the flange guide section away from the clamping section is less than 45 degrees, so that two opposite flange guide sections form a guide funnel converging towards the clamping section at one end of the clamping unit.

9. The epilating head of claim 5, characterized in that: The head of the window slot exposed by the clamping piece comprises a clamping section, a flange guide section formed by outwardly bending at least one end of the clamping section, and the outward bending angle of the flange guide section away from the clamping section is less than 45 degrees, so that two opposite flange guide sections form a guide funnel converging towards the clamping section at one end of the clamping unit.

10. The epilating head according to claim 1 or 2, characterized in that: The window slot has an axial width greater than the thickness between the two clamping pieces, so that the clamping unit of the pincer type can be opened and closed at the position of the window slot or the window slot exposed.

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