A five-finger fascia comb

Abstract

The utility model discloses a five-finger fascia comb belongs to the technical field of scalp nursing device, including comb body, be equipped with a plurality of comb tooth on the comb body, the comb body is equipped with the handle of spherical hinge connection, spherical hinge is equipped with soft protection layer and elastic device, the utility model discloses convenient operation, and the practicality is strong, and the problem that the single of existing five-finger comb force angle and hand force easy fatigue have been effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of scalp care device technology, specifically a five-finger fascia comb. Background Technology

[0002] Traditional five-finger fascia combs mainly consist of a comb body and multiple radially distributed comb teeth. The design purpose is to massage and stimulate the scalp through the density and tip curvature of the comb teeth.

[0003] Most existing five-finger fascia combs lack a scientifically designed grip. When using them, users need to directly grasp the edge of the comb to apply force. This grip method results in a small contact area between the hand and the comb, leading to insufficient stability. Since each user's grip shape is different, this largely requires users to constantly adjust the angle of use according to their own hand shape, significantly affecting stability and comfort. Furthermore, this method of applying force is inefficient; users must rely on direct finger pressure on the scalp for massage, which not only increases the difficulty of long-term use but may also lead to problems such as carpal tunnel syndrome.

[0004] In summary, existing five-finger fascia combs still have significant shortcomings in terms of force application efficiency and user comfort. There is an urgent need for a five-finger fascia comb designed to improve force application efficiency and reduce hand fatigue, so as to enhance the overall effectiveness and comfort of the product. Utility Model Content

[0005] The purpose of this invention is to overcome the aforementioned technical difficulties. This embodiment provides a five-finger fascia comb with an adjustable handle angle.

[0006] To achieve the above objectives, the technical solution adopted in this embodiment is as follows: a five-finger fascia comb, including a comb body, the comb body having multiple comb teeth, the comb body having a handle connected by a spherical hinge, and the spherical hinge having a soft protective layer and a tensioning device.

[0007] Furthermore, the tightening device includes a knob, a friction plate assembly, and positioning protrusions. The friction plate assembly consists of at least two copper-based sintered friction plates, and the surface roughness of the friction plates is 3.2–6.3 μm.

[0008] Furthermore, the knob is connected to a threaded rod with a thread pitch of 0.75 mm, wherein the locking torque increases by 1.5 N·m for every 90° rotation of the knob.

[0009] Furthermore, the end of the handle has a thickness of 3-5 mm, and its surface is provided with hemispherical anti-slip protrusions with a height of 0.5-1.2 mm and a density of 15-20 protrusions / cm². 2 .

[0010] Furthermore, the weight ratio of the comb body to the handle is 1:0.8 to 1.2, and the deviation of the center of gravity from the center of the comb tooth contact surface does not exceed ±5mm.

[0011] The five-finger fascia comb provided in this embodiment has the following beneficial effects:

[0012] This invention features a handle connected by a spherical hinge on the comb body, combined with a tensioning device. This allows for multi-angle adjustment of the handle while improving operational stability. The invention is easy to operate, highly practical, and effectively solves the problems of limited force application angle and easy hand fatigue associated with existing five-finger combs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the five-finger fascia comb of this utility model.

[0014] Figure 2 This is a schematic diagram of the five-finger fascia comb spherical hinge of this utility model.

[0015] In the diagram, 1 is the comb body; 2 is the comb teeth; 3 is the spherical hinge; 4 is the handle; 5 is the knob; 6 is the friction plate assembly; 7 is the positioning protrusion; and 9 is the threaded rod. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. The described embodiments are merely some, not all, of these embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0017] Example 1

[0018] like Figure 1 The present invention provides a five-finger fascia comb, comprising a comb body 1 and multiple comb teeth 2 located at the bottom of the comb body 1. The comb body 1 is made of ABS engineering plastic, and is 120mm long and 80mm wide. There are 25 comb teeth, each 3mm in diameter, with a spherical tip radius of 1.5mm. The teeth are spaced 20mm apart and radially distributed to conform to the curvature of the skull, with a tilt angle of 10°. The comb body 1 has a handle 4 connected by a spherical hinge 3. The handle 4 has a thickness of 3-5mm at its end. In this application, the thickness of the handle 4 gradually decreases along the gripping direction, reaching 4mm at the end. Its surface is staggered with hemispherical anti-slip protrusions, each protrusion having a height of 0.5-1.2mm, a bottom diameter of 1.5mm, and a density of 15-20 protrusions / cm². 2 The preferred protrusion height is 0.8mm, the bottom diameter is 1.5mm, and the density is 18 protrusions / cm³. 2The material is integrally injection molded with the handle 4. The applicant verified its performance and found that the friction coefficient μ of the five-finger fascia comb of this application is 0.62 when operating in an environment with 80% humidity, while the μ of the traditional striped comb is 0. (Test standard refers to ASTM D1894). The hemispherical anti-slip protrusions of this application are arranged in an alternating manner on the handle 4 to form a ratchet effect, which can generate resistance in any sliding direction, achieve multi-directional anti-slip, and improve anti-slip performance and comfort of use.

[0019] The weight ratio of the comb body 1 to the handle 4 is 1:0.8 to 1.2, and the deviation of the center of gravity from the center of the contact surface of the comb teeth 2 does not exceed ±5mm. Tests have shown that a weight ratio exceeding this range will lead to difficult operation (top-heavy) or unstable force application (top-light, bottom-heavy). In this application, the weight ratio of the comb body 1 to the handle 4 is preferably 1:1.2, and the deviation of the center of gravity of the handle 4 from the center of the contact surface of the comb teeth 2 does not exceed ±5mm. This allows the center of gravity to be closer to the comb body 1, which conforms to the lever balance principle, making the operation more stable and effectively reducing the amplitude of shaking. The wrist load when combing hair is reduced by 15% compared with the existing five-finger fascia comb.

[0020] The spherical hinge 3 includes a spherical body and a ball seat. The gap between the spherical body and the ball seat is 0.05mm to ensure smooth rotation without wobbling. The ball seat has a soft protective layer on its outer side, which is made of silicone or TPU material. The soft protective layer is used to buffer the grip pressure and prevent the spherical hinge 3 from digging into your hand or trapping your hair. The ball seat has a tightening device, which includes a knob 5, a friction plate group 6 and a positioning protrusion 7. The surface of the spherical body has a positioning groove 8 corresponding to the positioning protrusion 7. The tightening or loosening of the spherical body is controlled by rotating the knob 5.

[0021] The knob 5 described in this application is connected to a threaded rod 9. The inner wall of the knob 5 is provided with an internal thread that matches the external thread of the threaded rod. When the knob rotates, the threaded rod moves axially under the threaded drive of the knob, pushing the friction plate assembly to press or release the spherical body. The end of the threaded rod in this application is provided with a limiting groove, which cooperates with the corresponding structure on the inner wall of the ball seat to prevent the threaded rod from rotating with the knob, ensuring that only axial movement occurs. The thread pitch of the threaded rod 9 is 0.75mm. When locking, the knob rotates clockwise, and the threaded rod moves towards the friction plate assembly. The friction plate group moves in the direction of movement, pressing the friction plate together, increasing the static friction between the spherical body and the ball seat, and locking the angle. To release, the knob rotates counterclockwise, the threaded rod retracts, the pressure on the friction plate group is released, and the spherical body can be freely adjusted in angle. Each 90° rotation of knob 5 increases the locking torque by 1.5 N·m, achieving high locking torque within the limited stroke of knob 5. In this application, by loosening knob 5, the comb body 1 is manually adjusted to the target angle; the spherical groove and protrusion engage with a clicking sound. Tightening knob 5 locks the device. During use, the tightening and loosening device first pushes the threaded rod 9 to press the friction plate group 6 together, causing static friction between the copper-based sintered friction plate and the surface roughness of the spherical body.

[0022] This application employs a spherical hinge 3, which, through the universal joint structure of the spherical body and the ball seat, enables the comb body to be tilted forward from 10 to 45 degrees and backward from 0 to 30 degrees, covering the optimal force application angle for the main acupoints on the head. This aligns with the natural force application angle of the human forearm of 15 to 25 degrees. During use, the wrist and handle 4 form a lever effect. By adjusting the corresponding angle, the wrist rotation torque can be converted into vertical pressure on the comb teeth 2, allowing for precise force application. This avoids the problem of uneven scalp pressure caused by the deviation in the force application direction of traditional five-finger fascia combs. In contrast, traditional comb bodies 1 and handles 4 are fixedly connected, mostly at a 45° angle, resulting in a single force application angle and requiring the wrist to maintain an unnatural bend for extended periods. Compared to traditional fixed connections, the spherical hinge 3 provided in this application effectively alleviates hand fatigue and improves user comfort during use.

[0023] The friction plate group 6 is composed of at least two copper-based sintered friction plates. It utilizes the corrosion resistance and oil storage characteristics of copper alloy to maintain a stable friction coefficient. The positioning grooves 8 are distributed in a latitude and longitude pattern on the surface of the spherical body to ensure that at least one protrusion engages simultaneously when adjusting the angle, thereby improving the uniformity of torque resistance. During the adjustment process, the adjustment sound can be clearly heard without being harsh. The locking or releasing of the spherical body is controlled by rotating the knob 5.

[0024] The applicant conducted a force application efficiency test on the five-finger fascia comb provided in this application and the five-finger fascia comb in the prior art. The control group was the five-finger fascia comb without handle 4 in the prior art. The test was conducted using a pressure sensor of model XYZ-2000 with an accuracy of ±0.1N. The average value was taken after 10 tests. The control group required a finger pressure of 12.65N to apply force. The five-finger fascia comb in this embodiment required a wrist pressure of 4.86N under the lever action of handle 4. Compared with the five-finger fascia comb provided by the control group, the five-finger fascia comb provided in this application can effectively relieve hand fatigue and improve the comfort of use.

[0025] Example 2

[0026] Based on the above embodiments, in order to improve the service life of the five-finger fascia comb, the applicant may also provide an elastic buffer at the connection between the comb body 1 and the handle 4. The elastic buffer is connected to the spherical hinge 3 by ultrasonic welding or adhesive bonding. The elastic buffer has a wave-shaped hollow structure and is made of EVA foam material. Its elastic modulus is 15-25MPa, which is between the material of the comb body 1 and the material of the handle 4. It can realize the gradual transfer of stress, avoid material fatigue fracture caused by rigidity change, and improve its service life.

[0027] The applicant also verified the scalp care effect, including hair follicle density, scalp blood flow velocity, and subjective fatigue. Thirty patients (half male and half female, aged 25-45 years) were selected as test subjects. They massaged their scalp with the product of this embodiment for 15 minutes daily for 90 days. For testing indicators, dermoscopy combined with image analysis was used to detect hair follicle density, which was 85.3±12.1 follicles / cm² before the test and 102.7±15.6 follicles / cm² after the test. Laser Doppler was used to detect scalp blood flow velocity, which was 0.5±0.05 mm / s before massage and 0.51±0.07 mm / s after massage. Subjective fatigue was tested according to the VAS scoring system, with the traditional five-finger fascia comb scoring 4.7 / 10, while the five-finger fascia comb in this embodiment scored 1.9 / 10. In summary, the five-finger fascia comb provided in this application has significant practicality and technological advancement compared to existing five-finger fascia combs.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A five-finger fascia comb, comprising a comb body (1), wherein the comb body (1) is provided with a plurality of comb teeth (2), characterized in that: The comb body (1) is provided with a handle (4) connected by a spherical hinge (3), and the spherical hinge (3) is provided with a soft protective layer and a tensioning device.

2. The five-finger fascia comb according to claim 1, characterized in that: The tightening device includes a knob (5), a friction plate group (6) and a positioning protrusion (7). The friction plate group (6) is composed of at least two copper-based sintered friction plates, and the surface roughness of the friction plates is 3.2 to 6.3 μm.

3. The five-finger fascia comb according to claim 2, characterized in that: The knob (5) is connected to a threaded rod (9), the threaded rod (9) has a pitch of 0.75 mm, and the knob (5) increases the locking torque by 1.5 N·m for every 90° rotation.

4. The five-finger fascia comb according to claim 1, characterized in that: The handle (4) has a thickness of 3-5 mm at the end and a hemispherical anti-slip protrusion on the surface. The protrusion height is 0.5-1.2 mm and the density is 15-20 pieces / cm2.

5. The five-finger fascia comb according to claim 1, characterized in that: The weight ratio of the comb body (1) to the handle (4) is 1:0.8 to 1.2, and the deviation of the center of gravity from the center of the contact surface of the comb teeth (2) does not exceed ±5mm.

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