Toothbrush head and toothbrush

Abstract

The present disclosure relates to a toothbrush head and a toothbrush, the toothbrush head of the present disclosure comprises a tufting sheet, a bristle tuft, and a brush neck, wherein a plurality of tufting holes are arranged on the front surface of the tufting sheet, the tufting holes are blind holes; the number of the bristle tufts is equal to that of the tufting holes, and each bristle tuft is fixedly arranged in a tufting hole; the brush neck is fixedly connected with the tufting sheet; the back surface and the side surface of the tufting sheet and the connection position of the brush neck and the tufting sheet are covered with soft glue. In this way, the tufting holes of the toothbrush head of the present disclosure are blind holes, the tufting process is changed, the hot-melt end of the bristle tuft is located in the tufting hole, and only the bottom of the tufting sheet can be seen through the soft glue on the outside, and the hot-melt end cannot be seen, thereby improving the visual experience of the user. Meanwhile, one bristle tuft is arranged in each tufting hole, the excessive bottom of the bristle tuft is prevented from being bonded, the inclination angle of the bristles during tooth brushing is improved, and the bristle tuft can be attached to the complex tooth surface.

Description

Technical Field

[0001] This disclosure relates to the field of oral hygiene, and more particularly to a toothbrush head and a toothbrush. Background Technology

[0002] Traditional toothbrush heads typically use metal plates to hold the bristles in place. These metal plates are prone to oxidation and rust when exposed to humid environments, and they also fatigue under high-frequency vibrations, causing the bristles to loosen and fall out. Currently, copper-free toothbrush heads are available that use a heat-fusion technology to directly fix the bristles inside the brush head holes. This results in a more secure bristle hold, eliminates the risk of metal contamination, and makes them safer to use.

[0003] Existing transparent coated copper-free toothbrush heads reveal the internal bristle melting head through the transparent coating, significantly affecting the toothbrush's appearance and providing a poor user experience. Utility Model Content

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and to provide a toothbrush head and a toothbrush.

[0005] According to a first aspect of this disclosure, a toothbrush head is provided, the toothbrush head comprising: A hair implantation patch, wherein the front side of the hair implantation patch is provided with multiple hair implantation holes, and the hair implantation holes are blind holes; The number of bristle clusters is equal to the number of hair implantation holes, and each bristle cluster is fixedly disposed in one of the hair implantation holes; The brush neck is fixedly connected to the flocking plate. The back and sides of the bristle patch, as well as the connection point between the brush neck and the bristle patch, are covered with soft rubber.

[0006] In one embodiment of this disclosure, the ratio of the height of the hair implantation hole to the height of the hair implantation patch is 1:2.5-3.

[0007] In one embodiment of this disclosure, the soft adhesive is an opaque soft adhesive.

[0008] In one embodiment of this disclosure, the tail end of the bristle tuft is fixedly disposed in the corresponding bristle implantation hole by heat fusion.

[0009] In one embodiment of this disclosure, the hair implantation hole includes: Cleaning the pores of the tooth surface; Gingival cleaning and hair implantation pores are located at the left and right ends of the tooth surface cleaning and hair implantation pores. The interdental cleaning hair implantation holes are located at the upper and lower ends of the interdental cleaning hair implantation holes on the tooth surface.

[0010] In one embodiment of this disclosure, the tooth surface cleaning hair implantation hole includes a central hole and a plurality of peripheral holes surrounding the central hole; The central hole is a regular polygonal hole; The peripheral holes form a complete circle with the central hole as the center.

[0011] In one embodiment of this disclosure, the bristle implant is elliptical in shape, with the major axis of the ellipse located in the extending direction of the toothbrush handle. At least two bristle implant holes for cleaning the tooth surface are provided and are symmetrically arranged about the minor axis of the ellipse. The bristle implant holes for cleaning the gums and the bristle implant holes for cleaning the interdental spaces are arranged around the bristle implant holes for cleaning the tooth surface.

[0012] In one embodiment of this disclosure, the interdental cleaning hair implantation hole is a fan-shaped ring with the center of an ellipse as its center, and the central angle corresponding to the fan-shaped ring is greater than 90°.

[0013] In one embodiment of this disclosure, the cross-sectional profile of the gingival cleaning hair implantation hole includes: The first arc segment is concentric with the complete circle formed by the peripheral hole, and the radius of the first arc segment is greater than the radius of the complete circle formed by the peripheral hole. The second arc segment is a part of the ellipse; A straight line segment, which is parallel to the minor axis of the ellipse; The first arc segment and the second arc segment are connected by a smooth curve and the straight line segment.

[0014] In one embodiment of this disclosure, at least two interdental cleaning hair implantation holes are provided, and at least four gingival cleaning hair implantation holes are provided; The ratio of the area of ​​the hair implantation patch to the area of ​​the hair implantation hole for cleaning the tooth surface, the hair implantation hole for cleaning the gums, and the hair implantation hole for cleaning the interdental spaces is: 1:0.4-0.45:0.15-0.2:0.35-0.4.

[0015] In one embodiment of this disclosure, the gingival cleaning hair follicle holes are located on both sides of the short axis of the ellipse.

[0016] In one embodiment of this disclosure, the ratio of the gap length between the two tooth surface cleaning hair implantation holes to the length of the hair implantation piece is 1:7.5-8.

[0017] In one embodiment of this disclosure, the wall thickness of the tooth surface cleaning hair implantation hole, the gum cleaning hair implantation hole, and the interdental cleaning hair implantation hole is equal.

[0018] According to a second aspect of this disclosure, a toothbrush is provided, comprising: The brush head includes the brush head described in any of the above embodiments; Handheld part; A brush handle configured to connect the brush head and the handheld portion.

[0019] One beneficial effect of the toothbrush head disclosed herein is that the bristle implantation holes are blind holes, which changes the bristle implantation process. This allows the heat-fused ends of the bristle tufts to be located inside the implantation holes. The soft adhesive covering the outside only allows the bottom of the implanted bristle patch to be seen, while the heat-fused ends are not, thus improving the user's visual experience. At the same time, each implantation hole contains a bristle tuft, preventing excessive bristle tufts from sticking together at the bottom. This increases the bristle tilt angle during brushing, allowing the bristle tufts to conform to complex tooth surfaces.

[0020] The toothbrush disclosed herein includes the brush head, the hand handle, and the handle connecting the brush head and the hand handle, and therefore has the same beneficial effects as the brush head of the toothbrush disclosed herein, which will not be described in detail here. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the present disclosure and, together with their description, serve to explain the principles of the present disclosure.

[0022] Figure 1 This is an exploded structural diagram of the toothbrush head provided in one embodiment of the present disclosure; Figure 2 This is a front view of the brush head of a toothbrush provided in one embodiment of the present disclosure; Figure 3 This is a rear view of the brush head of a toothbrush provided in one embodiment of the present disclosure; Figure 4 This is a cross-sectional schematic diagram of the brush head of a toothbrush provided in one embodiment of the present disclosure; Figure 5 This is a schematic diagram of the exploded structure of a toothbrush provided in one embodiment of this disclosure.

[0023] Figures 1-5 The one-to-one correspondence between the component names and the reference numerals in the figures is as follows: 1- Hair implantation patch; 11- Tooth surface cleaning hair implantation hole; 111- Central hole; 112- Peripheral hole; 12- Gingival cleaning hair implantation hole; 13- Interdental cleaning hair implantation hole; 2- Bristle tuft; 3- Brush neck; 4- Soft rubber; 5- Handle; 6- Brush handle. Detailed Implementation

[0024] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0025] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0026] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0027] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0029] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0030] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0031] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0032] In this article, except when the toothbrush placement direction is specified, the left, right, up, and down directions are all based on the toothbrush being placed vertically.

[0033] Existing transparent, copper-free toothbrush heads with adhesive coatings reveal the internal bristle assembly through the coating, significantly impacting the toothbrush's appearance and providing a poor user experience. Therefore, this disclosure provides a toothbrush head and a toothbrush. For ease of understanding, please refer to the following... Figures 1-5 The toothbrush head and specific structure of the toothbrush, as well as its working principle, will be described in detail with reference to the embodiments.

[0034] The toothbrush head disclosed herein includes a bristle implant 1, bristle tufts 2, and a brush neck 3. The bristle implant 1 has multiple bristle implant holes on its front side, and the bristle implant holes are blind holes. The number of bristle tufts 2 is equal to the number of bristle implant holes, and each bristle tuft 2 is fixedly installed in one bristle implant hole. The brush neck 3 is fixedly connected to the bristle implant 1. The back and sides of the bristle implant 1 and the connection position between the brush neck 3 and the bristle implant 1 are covered with soft rubber 4.

[0035] Specifically, refer to Figure 1 , Figure 2 The bristle implant 1 has multiple implantation holes, each corresponding to the implantation of a bristle tuft 2. During the implantation process, the free end of the bristle tuft 2 is first rounded, and then the implanted end is heated to form a spindle-shaped heat-fused end, specifically, a heat-fused end that expands outward along the length of the bristle tuft 2. The bristle tuft 2 with the heat-fused end is implanted into the implantation hole by heating and pressurizing until it contacts the bottom of the implantation hole. After cooling, the implantation of the bristle tuft 2 is complete. Therefore, each bristle tuft 2 is placed in a corresponding implantation hole, preventing the bottom of the bristle tuft 2 from being completely glued together, which would cause the angle of the bristle tuft 2 to be fixed during brushing and make it difficult to conform to complex tooth surfaces.

[0036] The back and sides of the bristle implant 1 are covered with soft rubber 4 to protect it. The connection point between the brush neck 3 and the bristle implant 1 is also covered with soft rubber 4 to secure the bristle implant 1 to the brush neck 3. Currently, some children's toothbrushes use bright colors to appeal to children, while most toothbrushes use transparent soft rubber 4. Because transparent soft rubber 4 uses very few additives to avoid affecting transparency, it is often made of medical-grade TPU (thermoplastic polyurethane elastomer), which has advantages such as high strength, high toughness, and wear resistance. This also places higher demands on the manufacturing process and environment, making it more suitable for the manufacture of high-end toothbrush products.

[0037] Reference Figure 3 Existing bristle implantation holes are often designed as through holes. During the bristle implantation process, bundles of bristles 2 are typically inserted into the implantation hole, with one end protruding. Then, a heat-pressing method is used to fix the ends of the bristle bundles 2 to the bottom of the implantation piece 1. The ends of the bristle bundles 2 and the bottom of the implantation piece 1 are heated to soften them, and then mechanical pressure is used to press and fuse them together. After cooling, the bristle bundles 2 and the implantation piece 1 are fixed. However, in existing toothbrushes using transparent soft adhesive 4, the bonding area between the bristle bundles 2 and the implantation piece 1 is exposed, resulting in a poor visual experience. The toothbrush head of this disclosure uses a blind hole design for the bristle implantation hole, allowing the heat-fused ends of the bristle bundles 2 to be located inside the implantation hole. The heat-fused ends are not visible through the outer soft adhesive 4, improving the user's visual experience.

[0038] In summary, the bristle implantation holes of the toothbrush head disclosed herein are blind holes, which alters the bristle implantation process. This allows the heat-fused ends of the bristle tufts 2 to be located within the implantation holes. Only the bottom of the implanted bristle piece 1 is visible through the outer covering of the soft adhesive 4, while the heat-fused ends remain unseen, improving the user's visual experience. Furthermore, the placement of one bristle tuft 2 within each implantation hole prevents excessive bristle tufts 2 from adhering to their bottoms, increasing the bristle tilt angle during brushing and enabling the bristle tufts 2 to conform to complex tooth surfaces.

[0039] In one embodiment, the ratio of the height of the hair implantation hole to the height of the hair implantation patch 1 is 1:2.5-3.

[0040] Specifically, refer to Figure 2 , Figure 4 If the implantation holes are too shallow, it will affect the fixation effect of the bristle tuft 2. During toothbrush use, the free end of the bristle tuft 2 needs to rub against the tooth surface, exerting a force perpendicular to its length. If the implantation holes are too shallow, the bristle tuft 2 will easily collapse, lack sufficient rebound, and may even fall off under external force, greatly reducing the toothbrush's lifespan. On the other hand, if the implantation holes are too deep, the bristle tuft 2 will not easily change angle, making it difficult to conform to complex tooth surfaces, resulting in low cleaning efficiency. Furthermore, the thinner wall at the bottom of the implantation hole affects the structural strength of the bristle implant 1, making the structure of the bristle implant 1 prone to damage during the heat fusion process. Therefore, the height of the implantation holes is set to approximately one-third of the height of the bristle implant 1, achieving a good balance between the fixation effect of the bristle tuft 2, the cleaning efficiency of the bristle tuft 2, and the structural strength of the bristle implant 1.

[0041] In one embodiment, the soft rubber 4 is an opaque soft rubber.

[0042] Specifically, the soft rubber 4 uses opaque soft rubber, typically made of TPE (thermoplastic elastomer) and color masterbatch. This material is cheaper than the transparent soft rubber 4, which is prone to yellowing under ultraviolet light. The cost of the anti-yellowing material is nearly three times that of ordinary TPE (thermoplastic elastomer). The opaque soft rubber 4 not only conceals the hot melt head formed by the flocking but also hides stains, making it dirt-resistant, durable, and long-lasting. Different color designs provide consumers with more purchasing options.

[0043] In one embodiment, the tail end of the bristle tuft 2 is fixedly disposed in the corresponding bristle implantation hole by heat fusion.

[0044] Specifically, a bristle tuft 2 is implanted into each hair implantation hole. During the hair implantation process, one end of the bristle tuft 2 is first rounded, and the other end of the bristle tuft 2 is heated to form a spindle-shaped heat-melting end. During the heat-melting process, the bristle tuft 2 is tilted at an angle of 0-30° to adapt to the curvature of the gingival line. The shaped bristle tuft 2 is inserted into the hair implantation hole, and the brush head is heated to cause the hair implantation hole to shrink under heat pressure, and then cooled and fixed.

[0045] This design not only optimizes the hair implantation process and simplifies the process, but also ensures that the heat-fused ends of the hair implantation are located inside the hair implantation holes and do not protrude from the bottom of the hair implantation patch 1.

[0046] In one embodiment, the hair implantation holes include tooth surface cleaning hair implantation holes 11, gum cleaning hair implantation holes 12, and interdental cleaning hair implantation holes 13, wherein the gum cleaning hair implantation holes 12 are located at the left and right ends of the tooth surface cleaning hair implantation holes 11, and the interdental cleaning hair implantation holes 13 are located at the upper and lower ends of the tooth surface cleaning hair implantation holes 11.

[0047] Specifically, refer to Figure 2 The tooth surface cleaning hair implantation hole 11 is located in the center of the hair implantation piece 1. The bristle tuft 2 inside the tooth surface cleaning hair implantation hole 11 is mainly used to contact the tooth crown surface. The bristle tuft 2 with medium hardness is used. Under the action of external force, such as manual operation or motor-driven vibration, the bristle tuft 2 generates contact pressure with the tooth crown surface to clean the tooth surface.

[0048] Proper gum cleaning is essential. Inadequate deep cleaning can lead to oral diseases such as gingivitis and periodontitis, thus affecting oral health. Gum cleaning bristle implants 12 are located at both ends of the tooth surface cleaning bristle implants 11. The bristle tufts 2 of the gum cleaning implants 12 are mainly used for gum cleaning and massage. Since the gums are part of the oral mucosa and are relatively fragile, fine, soft bristles are used to clean them horizontally along the gum line under external force. Simultaneously, the bristle tufts 2 of the tooth surface cleaning implants 11 can clean the surface of the tooth crown.

[0049] The bristle tuft 2 is vertically inserted into the tooth surface cleaning implant hole 11, and during use, it is usually in perpendicular contact with the tooth crown surface. When the bristle tuft 2 of the gingival cleaning implant hole 12 is inserted, it forms a certain angle with the bristle tuft 2 inside the tooth surface cleaning implant hole 11, with an angle ranging from 0-30°, preferably 5°-9°. During the cleaning of the tooth crown surface by the bristle tuft 2 of the tooth surface cleaning implant hole 11, the toothbrush is usually placed horizontally in the mouth. At this time, the bristle tuft 2 of the upper gingival cleaning implant hole 12 is curved upwards at a certain angle, and the bristle tuft 2 of the lower gingival cleaning implant hole 12 is curved downwards at a certain angle. Furthermore, the length of the bristle tuft 2 of the gingival cleaning implant hole 12 is 1.5-2 mm longer than the length of the bristle tuft 2 of the tooth surface cleaning implant hole 11, allowing it to contact the upper and lower gums while cleaning the tooth crown surface, thus targeting the gingival area for cleaning.

[0050] Food debris and bacteria mainly remain in the gaps between teeth, easily forming plaque and gradually eroding tooth enamel. Therefore, it is necessary to clean the gaps between teeth. The interdental cleaning bristle tufts 13 are located at the upper and lower ends of the tooth surface cleaning bristle tufts 11. The bristle tufts 2 of the interdental cleaning bristle tufts 13 are mainly used for cleaning the gaps between teeth. Because the interdental area needs to be cleaned deeply, the bristle tufts 2 use extremely fine bristles with moderate hardness, softer than the bristle tufts 2 inside the tooth surface cleaning bristle tufts 11. The length of the bristle tufts 2 in the interdental cleaning bristle tufts 13 is equal to the length of the bristle tufts 2 in the gingival cleaning bristle tufts 12, both being 1.5-2 mm longer than the bristle tufts 2 in the tooth surface cleaning bristle tufts 11. While cleaning the tooth crown surface, the bristle tufts 2 in the interdental cleaning bristle tufts 13 can penetrate deep into the gaps between teeth for cleaning.

[0051] In one embodiment, the tooth surface cleaning hair implantation hole 11 includes a central hole 111 and a plurality of peripheral holes 112 surrounding the central hole 111; the central hole 111 is a regular polygonal hole; the plurality of peripheral holes 112 form a complete circle with the central hole 111 as the center.

[0052] Specifically, the tooth surface cleaning pore 11 is circular in shape, formed by several peripheral pores 112 surrounding the central pore 111. The number of peripheral pores 112 is the same as the number of sides of the central pore 111. First, the overall circular design matches the movement trajectory of the toothbrush head. Taking the widely accepted scientific Bass brushing technique as an example, the bristles are tilted and gently pressed against the teeth, then gently brushed back and forth in an arc. The brushing trajectory is roughly elliptical, which roughly matches the overall shape of the tooth surface cleaning pore 11. Second, the circular design ensures even pressure distribution during brushing. If the pores were square or triangular, the pressure would be concentrated at the corners, potentially causing damage to the enamel due to localized excessive pressure.

[0053] In one embodiment, the hair implant 1 is elliptical in shape, with the major axis of the ellipse located in the extension direction of the toothbrush handle. At least two tooth surface cleaning hair implant holes 11 are provided and are symmetrically arranged about the minor axis of the ellipse. Gum cleaning hair implant holes 12 and interdental cleaning hair implant holes 13 are arranged around the tooth surface cleaning hair implant holes 11.

[0054] Specifically, firstly, the oral mucosa is relatively fragile. Using square or triangular brush heads can damage these delicate tissues, and even if they are used, the corners should be rounded. Oval brush heads do not have this problem. The bristle insert 1 matches the shape of the brush head, which facilitates manufacturing and maximizes the cleaning area by utilizing the brush head's space. Secondly, while round brush heads also achieve the above effects, the oval shape is better suited to the oral cavity space based on tooth width and vertical height. If the diameter of a round brush head is set to match the vertical height of the teeth, its length can only cover one or two teeth, significantly reducing cleaning efficiency. An oval brush head, on the other hand, can have its short axis set to match the vertical height of the teeth, and its long axis to match the tooth width, allowing it to cover more tooth surfaces at once, thus improving cleaning efficiency.

[0055] The tooth surface cleaning hair implantation hole 11 is provided with at least two, and is arranged symmetrically about the short axis of the ellipse, so that the bristle tufts 2 of the tooth surface cleaning hair implantation hole 11 can cover the tooth surface as much as possible, while ensuring that the pressure is evenly distributed.

[0056] In one embodiment, the tooth gap cleaning pore 13 is a fan-shaped ring with the center of an ellipse as its center, and the central angle corresponding to the fan-shaped ring is greater than 90°.

[0057] Specifically, the interdental cleaning hair implantation hole 13 is shaped like a fan ring, which is suitable not only for the elliptical hair implant 1 but also for the circular tooth surface cleaning hair implantation hole 11. This allows the interdental cleaning hair implantation hole 13 to cover as much of the hair implant 1 as possible, effectively utilizing the area of ​​the hair implant 1 and ensuring even pressure distribution. The central angle corresponding to the fan ring determines the width of the fan ring; the larger the central angle, the wider the fan ring, up to a central angle of 180°. Therefore, the central angle corresponding to the fan ring is set to be greater than 90°, so that the width of the fan ring is close to the vertical height of the tooth. The bristles 2 of the interdental cleaning hair implantation hole 13 can penetrate deep into the entire interdental space between two teeth, performing a complete cleaning from top to bottom, reducing the occurrence of cleaning dead zones, and improving the cleaning effect.

[0058] In one embodiment, the cross-sectional profile of the gingival cleaning hair implantation hole 12 includes a first arc segment, a second arc segment, and a straight line segment, wherein the first arc segment and the second arc segment are connected by a smooth curve and a straight line segment, wherein the first arc segment is concentric with the full circle formed by the peripheral hole 112, and the radius of the first arc segment is greater than the radius of the full circle formed by the peripheral hole 112; the second arc segment is part of an ellipse; and the straight line segment is parallel to the minor axis of the ellipse.

[0059] Specifically, the cross-section of the gingival cleaning hair implantation hole 12 is irregular, consisting of three parts: a first arc segment, a second arc segment, and a straight line segment. The first arc segment is concentric with the full circle formed by the peripheral hole 112 and is adapted to the shape of the tooth surface cleaning hair implantation hole 11. The second arc segment is part of the elliptical hair implantation piece 1, and the straight line segment is parallel to the minor axis of the ellipse.

[0060] With this design, the cross-section of the gum cleaning hair implant 12 is adapted to the shape of the hair implant 1 and the tooth surface cleaning hair implant 11, which can better fill the hair implant 1, effectively utilize the area of ​​the hair implant 1, increase the area of ​​tooth cleaning, and achieve cleaning and massage of the gums.

[0061] In one embodiment, at least two interdental cleaning hair implantation holes 13 and at least four gingival cleaning hair implantation holes 12 are provided; the ratio of the area of ​​the hair implantation patch 1 to the area of ​​the tooth surface cleaning hair implantation holes 11, the gingival cleaning hair implantation holes 12 and the interdental cleaning hair implantation holes 13 is: 1:0.4-0.45:0.15-0.2:0.35-0.4.

[0062] Specifically, at least two interdental cleaning hair implantation holes 13 are provided, located on the upper and lower sides of the tooth surface cleaning hair implantation holes 11, respectively. At least four gingival cleaning hair implantation holes 12 are provided, with two located on the left side of the tooth surface cleaning hair implantation holes 11 and symmetrical about the short axis of the elliptical hair implant 1, and the other two located on the right side of the tooth surface cleaning hair implantation holes 11 and symmetrical about the short axis of the elliptical hair implant 1. With this arrangement, the edge shapes of the tooth surface cleaning hair implantation holes 11, gingival cleaning hair implantation holes 12, and interdental cleaning hair implantation holes 13 are mutually adapted and adapted to the elliptical shape of the hair implant 1. The tooth surface cleaning hair implantation holes 11, gingival cleaning hair implantation holes 12, and interdental cleaning hair implantation holes 13 basically cover the hair implant 1, and the area of ​​the hair implantation holes accounts for more than 75% of the area of ​​the hair implant 1. The ratio of the area of ​​the hair graft 1 to the area of ​​the tooth surface cleaning hair graft 11, the gum cleaning hair graft 12, and the interdental cleaning hair graft 13 is: 1:0.4-0.45:0.15-0.2:0.35-0.4.

[0063] In one embodiment, the gingival cleaning hair follicles 12 are located on both sides of the short axis of the ellipse.

[0064] Specifically, there are at least four gingival cleaning hair implant holes 12. Two of them are located on the left side of the tooth surface cleaning hair implant holes 11 and are symmetrical about the short axis of the elliptical hair implant plate 1. The other two are located on the right side of the tooth surface cleaning hair implant holes 11 and are symmetrical about the short axis of the elliptical hair implant plate 1. The straight segment of the cross section of the gingival cleaning hair implant holes 12 is parallel to the short axis of the ellipse, so that the pressure is evenly distributed. At the same time, when the toothbrush is placed horizontally in the mouth, it is not necessary to reverse the direction of the toothbrush to clean the upper and lower gingival areas.

[0065] In one embodiment, the ratio of the gap length between the two tooth surface cleaning hair implantation holes 11 to the length of the hair implantation piece 1 is 1:7.5-8.

[0066] Specifically, the larger the gap between the two tooth surface cleaning pores 11, the greater the relative freedom of the bristle tufts 2 of the two tooth surface cleaning pores 11, allowing them to conform to complex tooth surfaces. However, a larger gap also leads to cleaning dead zones, making it impossible to clean some areas in the oral cavity smoothly. This necessitates changing the user's posture and cleaning technique, causing inconvenience. Therefore, the ratio of the gap length between the two tooth surface cleaning pores 11 to the length of the bristle patch 1 is set at 1:7.5-8. In one embodiment, the wall thickness of the tooth surface cleaning hair implantation hole 11, the gum cleaning hair implantation hole 12, and the interdental cleaning hair implantation hole 13 is equal.

[0067] Specifically, firstly, inconsistent hole wall thickness leads to localized stress concentration, significantly reducing the lifespan of the toothbrush, especially for electric toothbrushes. Repeated high-frequency vibrations can cause the hole walls to crack, resulting in poorer bristle retention or even detachment. Secondly, if the hole wall thickness is inconsistent, the shrinkage rates in different directions during the heat-melting process will be uneven across the tooth surface cleaning pores 11, gum cleaning pores 12, and interdental cleaning pores 13, leading to poor bristle retention or even detachment, and a significant decrease in product yield.

[0068] Maintaining consistent hole wall thickness for tooth surface cleaning pore 11, gum cleaning pore 12, and interdental cleaning pore 13 effectively ensures product reliability and production yield.

[0069] The toothbrush disclosed herein includes a brush head, a handheld portion 5, and a handle 6, wherein the brush head includes the brush head described in any of the above embodiments; and the handle 6 is configured to connect the brush head and the handheld portion 5.

[0070] Specifically, refer to Figure 5 The toothbrush disclosed herein has a handheld part 5, a brush handle 6, and a brush head as described in the above embodiments of the present disclosure. The brush handle 6 and the brush neck 3 are integrally injection molded. The bottom of the brush handle 6 is provided with an inward mounting hole, and the wall of the hole is provided with a mounting position that is fixed to the mounting bracket by engaging. The top of the handheld part 5 is fixedly connected to the mounting bracket and is fixedly connected to the brush handle 6 through the mounting bracket. The handheld part is also equipped with a motor, a power supply unit, and an output end. The output end is connected to the brush neck 3 and is used to drive the brush head to vibrate.

[0071] In another embodiment, the brush neck 3 is inserted into and fixedly connected to the brush handle 6, and the soft rubber 4 covers the brush neck 3 up to the connection point between the brush handle 6 and the brush neck 3. The length and width dimensions of the cross-section of the brush neck 3 are both smaller than those of the brush handle 6, so that the brush neck 3 can be inserted into the brush handle 6. The cross-sectional shape and size of the soft rubber 4 covering the brush neck 3 are the same as those of the brush handle 6, so that the soft rubber 4 on the outside of the brush neck 3 and the brush handle 6 can transition smoothly, improving the user experience.

[0072] The toothbrush possesses the technical advantages of the brush head disclosed herein. The bristle implantation holes are blind holes, altering the bristle implantation process. This allows the heat-fused ends of the bristle tufts 2 to be located within the implantation holes. Through the outer covering of the soft adhesive 4, only the bottom of the bristle patch 1 is visible, while the heat-fused ends remain hidden, improving the user's visual experience. Simultaneously, each implantation hole contains one bristle tuft 2, preventing excessive adhesion at the bottom of the bristle tufts 2 and increasing the bristle tilt angle during brushing, enabling the bristle tufts 2 to conform to complex tooth surfaces.

[0073] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. A toothbrush head, characterized in that, The toothbrush head includes: Hair implantation patch (1), wherein multiple hair implantation holes are provided on the front side of the hair implantation patch (1), and the hair implantation holes are blind holes; The number of bristle tufts (2) is equal to the number of hair implantation holes, and each bristle tuft (2) is fixedly disposed in one of the hair implantation holes; Brush neck (3), the brush neck (3) is fixedly connected to the hair grafting plate (1); The back and sides of the hair graft (1) and the connection position between the brush neck (3) and the hair graft (1) are covered with soft rubber (4).

2. The toothbrush head according to claim 1, characterized in that, The ratio of the height of the hair implantation hole to the height of the hair implantation patch (1) is 1:2.5-3.

3. The toothbrush head according to claim 2, characterized in that, The soft rubber (4) is an opaque soft rubber.

4. The toothbrush head according to claim 3, characterized in that, The tail end of the bristle tuft (2) is fixed in the corresponding bristle hole by heat fusion.

5. The toothbrush head according to any one of claims 1-4, characterized in that, The hair follicle holes include: Cleaning the pores of the tooth surface (11); Gingival cleaning hair implantation holes (12) are located at the left and right ends of the tooth surface cleaning hair implantation holes (11). The interdental cleaning hair implantation hole (13) is located at the upper and lower ends of the tooth surface cleaning hair implantation hole (11).

6. The toothbrush head according to claim 5, characterized in that, The tooth surface cleaning hair implantation hole (11) includes a central hole (111) and a plurality of peripheral holes (112) surrounding the central hole (111). The central hole (111) is a regular polygonal hole; The peripheral holes (112) form a complete circle with the central hole (111) as the center.

7. The toothbrush head according to claim 6, characterized in that, The hair implant (1) is elliptical in shape, with the major axis of the ellipse located in the extension direction of the toothbrush handle. At least two hair implant holes (11) for cleaning the tooth surface are provided and are symmetrically arranged about the minor axis of the ellipse. The hair implant holes (12) for cleaning the gums and the hair implant holes (13) for cleaning the interdental spaces are arranged around the hair implant holes (11) for cleaning the tooth surface.

8. The toothbrush head according to claim 7, characterized in that, The tooth gap cleaning hair implantation hole (13) is a fan-shaped ring with the center of the ellipse as the center, and the central angle corresponding to the fan-shaped ring is greater than 90°.

9. The toothbrush head according to claim 8, characterized in that, The cross-sectional profile of the gingival cleaning hair follicle implant (12) includes: The first arc segment is concentric with the full circle formed by the peripheral hole (112), and the radius of the first arc segment is greater than the radius of the full circle formed by the peripheral hole (112). The second arc segment is a part of the ellipse; A straight line segment, which is parallel to the minor axis of the ellipse; The first arc segment and the second arc segment are connected by a smooth curve and the straight line segment.

10. The toothbrush head according to claim 9, characterized in that, At least two of the interdental cleaning hair implantation holes (13) are provided, and at least four of the gingival cleaning hair implantation holes (12) are provided; The ratio of the area of ​​the hair implant (1) to the area of ​​the tooth surface cleaning hair implant hole (11), the gingival cleaning hair implant hole (12) and the interdental cleaning hair implant hole (13) is: 1:0.4-0.45:0.15-0.2:0.35-0.

4.

11. The toothbrush head according to claim 10, characterized in that, The gingival cleaning pores (12) are located on both sides of the short axis of the ellipse.

12. The toothbrush head according to claim 11, characterized in that, The ratio of the length of the gap between the two tooth surface cleaning hair implantation holes (11) to the length of the hair implantation piece (1) is 1:7.5-8.

13. The toothbrush head according to claim 12, characterized in that, The wall thickness of the tooth surface cleaning hair implantation hole (11), the gum cleaning hair implantation hole (12), and the interdental cleaning hair implantation hole (13) is equal.

14. A toothbrush, characterized in that, include: The brush head includes the brush head according to any one of claims 1-13; Handheld part (5); A brush handle (6) is configured to connect the brush head and the handheld part (5).

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