An angle-adjustable oral care toothbrush handle assembly

Abstract

The utility model belongs to oral hygiene appliance technical field especially is a kind of angle-adjustable oral care toothbrush handle assembly. Including handle main part, the top of handle main part is provided with brush head connecting rod, the top fixedly connected with functional brush head of brush head connecting rod, the top fixedly connected with adjusting mechanism base of handle main part, the upper surface fixedly connected with angle adjusting seat of adjusting mechanism base, the inner surface of angle adjusting seat is equipped with ball head rotating groove, the inside of angle adjusting seat is provided with medical stainless steel ball head, medical stainless steel ball head rotates in the inner surface of angle adjusting seat by ball head rotating groove. The utility model is through flexible angle adjustment and stable locking design, adapts complex cleaning scene in oral cavity, detachable brush head reduces use cost, multi-dimension antiskid structure and adaptability handle design, ensure holding firm and comfortable, adapt to the crowd of hand activity inconvenience.

Description

Technical Field

[0001] This utility model belongs to the field of oral hygiene appliance technology, specifically relating to an adjustable-angle oral care toothbrush handle assembly. Background Technology

[0002] Oral care is the core of maintaining oral health. As a basic care tool, the toothbrush's primary function is to remove food debris and plaque from the tooth surface, between teeth, and in the gingival sulcus, preventing oral diseases such as cavities, gingivitis, and periodontitis, and ensuring the health of the oral mucosa and overall physiological function. The toothbrush is the most basic and effective tool for actively removing plaque. For hospitalized patients, the elderly, and those with limited mobility, their oral self-cleaning ability is reduced, and their risk of disease is higher, but their hand strength and dexterity are often insufficient, making it difficult to effectively clean their mouths using ordinary toothbrushes.

[0003] In existing designs, the brush head and handle are often fixedly connected, and the brush head angle cannot be adjusted. However, the internal structure of the oral cavity is complex, with teeth arranged densely and hidden areas such as gaps between teeth, gingival sulcus, and the inner side of molars. A toothbrush with a fixed angle cannot accurately adapt to the cleaning needs of each area, resulting in incomplete cleaning, easy accumulation of plaque and food debris, and subsequent oral diseases such as tooth decay and gingivitis. Some toothbrush products with adjustable angles have unreasonable locking mechanisms, resulting in poor stability after locking. When cleaning force is applied, the angle is prone to shift, which not only affects the cleaning effect but may also puncture the oral mucosa due to sudden angle changes.

[0004] To address this issue, an adjustable-angle oral care toothbrush handle assembly was designed. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides an adjustable-angle toothbrush handle assembly. This device, through flexible angle adjustment and a secure locking design, adapts to complex oral hygiene scenarios and solves the problem of fixed angle in traditional toothbrushes.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable-angle oral care toothbrush handle assembly, comprising a handle body, a brush head connecting rod at the top of the handle body, a functional brush head fixedly connected to the top of the brush head connecting rod, an adjustment mechanism base fixedly connected to the top of the handle body, an angle adjustment seat fixedly connected to the upper surface of the adjustment mechanism base, a ball head rotation groove on the inner surface of the angle adjustment seat, a medical stainless steel ball head inside the angle adjustment seat, the medical stainless steel ball head rotating on the inner surface of the angle adjustment seat through the ball head rotation groove, the medical stainless steel ball head being fixedly connected to the brush head connecting rod, a locking knob threadedly connected to the surface of the angle adjustment seat, a sloping guide groove on the upper surface of the angle adjustment seat, four sets of elastic openings evenly distributed on the surface of the angle adjustment seat, and a clamping oblique block cooperating with the sloping guide groove fixedly connected to the inner surface of the locking knob.

[0007] As a preferred embodiment of the adjustable angle oral care toothbrush handle assembly of this utility model, the inner surface of the angle adjustment seat is provided with an arc-shaped fitting groove that fits with the outer surface of the medical stainless steel ball head.

[0008] As a preferred embodiment of the adjustable-angle oral care toothbrush handle assembly of this utility model, the medical stainless steel ball head is interference-fitted with the angle adjustment seat.

[0009] As a preferred embodiment of the adjustable-angle oral care toothbrush handle assembly of this utility model, the surface of the locking knob is evenly provided with six sets of knob anti-slip grooves.

[0010] As a preferred embodiment of the adjustable-angle oral care toothbrush handle assembly of this utility model, the medical stainless steel ball head has symmetrical ball head cut surfaces on both sides.

[0011] As a preferred embodiment of the adjustable-angle oral care toothbrush handle assembly of this utility model, the medical stainless steel ball head is provided with elastic deformation grooves symmetrically on both sides.

[0012] As a preferred embodiment of the adjustable-angle oral care toothbrush handle assembly of this utility model, the surface of the handle body is provided with four sets of anti-slip grip grooves.

[0013] As a preferred embodiment of the adjustable-angle oral care toothbrush handle assembly of this utility model, the surface of the handle body is covered with an anti-slip handle sleeve, and the surface of the anti-slip handle sleeve is fixedly connected with several sets of evenly distributed anti-slip protrusions.

[0014] As a preferred embodiment of the adjustable-angle oral care toothbrush handle assembly of this utility model, the anti-slip handle sleeve is made of medical-grade TPE soft rubber, and the inner layer of the handle body is embedded with a lightweight ABS skeleton.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The angle adjustment mechanism can flexibly adapt to the cleaning needs of different areas of the oral cavity. The locking structure ensures that the angle does not shift during cleaning, ensuring thorough cleaning. The detachable brush head design allows for convenient replacement, avoiding resource waste caused by replacing the whole brush and reducing usage costs.

[0017] 2. The handle features anti-slip grip grooves, anti-slip sleeves, and anti-slip protrusions, providing multiple layers of anti-slip protection. Combined with a medical-grade TPE soft rubber and ABS skeleton, it balances grip comfort and structural support, making it suitable for people with weak or trembling hands. The overall design is simple to operate, reliable in locking, and widely adaptable, improving both the efficiency and safety of oral cleaning while enhancing ease of use and comfort, effectively meeting the oral care needs of different groups. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0020] Figure 2 This is a schematic diagram of the angle adjustment seat in this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the stainless steel ball head for traditional Chinese medicine of this utility model;

[0022] Figure 4 This is a schematic diagram of the anti-slip grip sleeve in this utility model;

[0023] In the picture:

[0024] 1. Handle body; 2. Brush head connecting rod; 3. Functional brush head; 4. Adjustment mechanism base; 5. Angle adjustment seat; 6. Ball head rotation groove; 7. Medical stainless steel ball head; 8. Locking knob; 9. Angled guide groove; 10. Elastic opening of adjustment seat; 11. Pressing inclined block; 12. Arc-shaped adapter groove; 13. Knob anti-slip groove; 14. Ball head cut surface; 15. Elastic deformation groove; 16. Handle anti-slip grip groove; 17. Anti-slip handle sleeve; 18. Anti-slip protrusions. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] All standard parts used in this application can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, welding, and bonding that are mature in the prior art. The components used for circuit connection are all conventional models in the prior art.

[0027] Meanwhile, to clearly illustrate the connection relationships and working principles between the components and highlight key points, the accompanying drawings in the instruction manual are organized and drawn in a simplified manner. One simplified diagram can correspond to multiple materials and actual external structural shapes. Example 1

[0028] like Figure 1 As shown;

[0029] An adjustable-angle oral care toothbrush handle assembly includes a handle body 1, a brush head connecting rod 2 at the top of the handle body 1, and a functional brush head 3 fixedly connected to the top of the brush head connecting rod 2.

[0030] In this implementation plan: In existing designs, the brush head and handle are often fixedly connected, and the brush head angle cannot be adjusted. However, the internal structure of the oral cavity is complex, with densely packed teeth and hidden areas such as gaps between teeth, gingival sulci, and the inner surface of molars. A fixed-angle toothbrush cannot accurately adapt to the cleaning needs of each area, resulting in incomplete cleaning, easy accumulation of plaque and food debris, and subsequent oral diseases such as tooth decay and gingivitis. Some angle-adjustable toothbrush products have unreasonable locking mechanisms, resulting in poor stability after locking. When cleaning force is applied, the angle is prone to shift, which not only affects the cleaning effect but may also cause injury to the oral mucosa due to sudden angle changes. Considering the usage, this problem is obviously a real and difficult problem to solve.

[0031] Furthermore:

[0032] This application incorporates the aforementioned prior art, such as Figures 1 to 4 As shown:

[0033] Based on the above: An adjustable angle oral care toothbrush handle assembly, wherein an adjustment mechanism base 4 is fixedly connected to the top of the handle body 1, an angle adjustment seat 5 is fixedly connected to the upper surface of the adjustment mechanism base 4, a ball head rotation groove 6 is opened on the inner surface of the angle adjustment seat 5, a medical stainless steel ball head 7 is provided inside the angle adjustment seat 5, the medical stainless steel ball head 7 rotates on the inner surface of the angle adjustment seat 5 through the ball head rotation groove 6, the medical stainless steel ball head 7 is fixedly connected to the brush head connecting rod 2, a locking knob 8 is threadedly connected to the surface of the angle adjustment seat 5, a sloping guide groove 9 is opened on the upper surface of the angle adjustment seat 5, four sets of adjustment seat elastic openings 10 are evenly opened on the surface of the angle adjustment seat 5, and a clamping inclined block 11 that cooperates with the sloping guide groove 9 is fixedly connected to the inner surface of the locking knob 8.

[0034] In this implementation scheme: the handle body 1 provides basic support for the entire assembly, and the adjustment mechanism base 4 fixed at its top supports the angle adjustment seat 5, making the angle adjustment seat 5 a stable installation reference. The ball head rotation groove 6 on the inner surface of the angle adjustment seat 5 provides rotation space for the medical stainless steel ball head 7. The medical stainless steel ball head 7 is fixedly connected to the brush head connecting rod 2. When the medical stainless steel ball head 7 rotates in the ball head rotation groove 6, it can simultaneously drive the brush head connecting rod 2 and the functional brush head 3 at the top to adjust the angle, realizing different posture adaptations required for oral cleaning. The locking knob 8 threaded on the surface of the angle adjustment seat 5 can move along the axial direction of the angle adjustment seat 5. When the locking knob 8 is rotated, the clamping inclined block 11 fixed inside it will cooperate with the inclined guide groove 9 on the upper surface of the angle adjustment seat 5. With the help of the inclined plane transmission, the clamping inclined block 11 squeezes the inner wall of the inclined guide groove 9. At the same time, the four sets of elastic openings 10 on the surface of the angle adjustment seat 5 provide elastic deformation space for the angle adjustment seat 5. Under the squeezing action of the clamping inclined block 11, the inner wall of the angle adjustment seat 5 contracts towards the center, thereby clamping the medical stainless steel ball head 7 and realizing the angle locking. This realizes the angle adjustment function of the functional brush head 3, providing a stable, flexible and controllable universal angle adjustment capability, perfectly adapting to the cleaning angle needs of different parts of the oral cavity. The cooperative design of the locking knob 8 with the clamping inclined block 11 and the inclined guide groove 9, combined with the elastic deformation characteristics of the elastic openings 10 of the adjustment seat, makes the angle locking operation simple and efficient, and the structure is stable after locking, avoiding angle deviation during cleaning.

[0035] Furthermore:

[0036] In an optional embodiment, the inner surface of the angle adjustment seat 5 is provided with an arc-shaped adapter groove 12 that fits against the outer surface of the medical stainless steel ball head 7.

[0037] In this embodiment: the arc-shaped adapter groove 12 on the inner surface of the angle adjustment seat 5 fits against the outer surface of the medical stainless steel ball head 7. When the locking knob 8 is rotated, the clamping block 11 squeezes the inclined guide groove 9, causing the angle adjustment seat 5 to contract towards the center through the elastic opening 10 of the adjustment seat and hug the medical stainless steel ball head 7. At this time, the arc-shaped adapter groove 12 fits against the outer surface of the medical stainless steel ball head 7, increasing the contact area between the angle adjustment seat 5 and the medical stainless steel ball head 7. By increasing the contact friction, the rotation of the medical stainless steel ball head 7 is further restricted, making the medical stainless steel ball head 7 more firmly fixed and preventing the medical stainless steel ball head 7 from loosening or shifting in angle due to force during the cleaning process.

[0038] Furthermore:

[0039] In an optional embodiment, the medical stainless steel ball head 7 is interference-fitted with the angle adjustment seat 5.

[0040] In this embodiment: the medical stainless steel ball head 7 and the angle adjustment seat 5 are interference-fitted. When the locking knob 8 is not rotated to lock, the friction generated by the interference fit allows the medical stainless steel ball head 7 to maintain its current angle within the ball head rotation groove 6, preventing it from rotating arbitrarily due to its own weight or slight external force. When a certain force is applied to adjust the angle, the medical stainless steel ball head 7 can overcome the friction of the interference fit and rotate smoothly within the ball head rotation groove 6. After adjusting to the target angle, the friction of the interference fit can temporarily fix the angle, facilitating subsequent locking operations. Simultaneously, when the function brush... When the head 3 is damaged or needs to be replaced with a different type of functional brush head 3, rotate the locking knob 8 in the opposite direction to release the clamping force of the clamping block 11 from the angle adjustment seat 5. Then, apply axial tension to pull the medical stainless steel ball head 7 out of the ball head rotation groove 6 of the angle adjustment seat 5, so that the medical stainless steel ball head 7 is completely separated from the angle adjustment seat 5. After replacing with a new functional brush head 3, align the new medical stainless steel ball head 7 with the ball head rotation groove 6 and apply axial pressure to re-embed it into the angle adjustment seat 5. The interference fit will then fix it again, completing the replacement of the functional brush head 3.

[0041] Furthermore:

[0042] In an optional embodiment, the surface of the locking knob 8 is provided with six sets of knob anti-slip grooves 13.

[0043] In this embodiment, the six sets of knob anti-slip grooves 13 evenly distributed on the surface of the locking knob 8 can increase the friction between the hand and the surface of the locking knob 8. When the user rotates the locking knob 8 to lock or unlock the angle, the contact area between the hand and the knob anti-slip groove 13 increases, and the anti-slip groove structure can prevent relative sliding between the hand and the locking knob 8, reducing the force required for rotation operation, so that people with inconvenient hand activity or weak strength can easily complete the angle locking and unlocking operation.

[0044] Furthermore:

[0045] In an optional embodiment, the medical stainless steel ball head 7 has symmetrical ball head cut surfaces 14 on both sides.

[0046] In this embodiment, the symmetrical ball head cut surfaces 14 on both sides of the medical stainless steel ball head 7 reduce the contact area between the medical stainless steel ball head 7 and the inner wall of the angle adjustment seat 5. During the angle adjustment process, the friction force when the medical stainless steel ball head 7 rotates can be reduced, making angle adjustment easier. At the same time, when the locking knob 8 drives the clamping wedge 11 to squeeze the angle adjustment seat 5, the inner wall of the angle adjustment seat 5 contracts and fits against the ball head cut surface 14. The planar structure of the ball head cut surface 14 makes the clamping force of the angle adjustment seat 5 more concentrated, improving the locking effect.

[0047] Furthermore:

[0048] In an optional embodiment, the medical stainless steel ball head 7 has symmetrical elastic deformation grooves 15 on both sides.

[0049] In this embodiment, the symmetrical elastic deformation grooves 15 on both sides of the medical stainless steel ball head 7 provide a small amount of elastic deformation space for the medical stainless steel ball head 7. When the inner wall of the angle adjustment seat 5 contracts towards the center to clamp the medical stainless steel ball head 7 under the action of the locking knob 8, the medical stainless steel ball head 7 can generate slight elastic deformation through the elastic deformation grooves 15, so that the medical stainless steel ball head 7 fits more tightly with the inner wall of the angle adjustment seat 5, increasing the friction between the two and improving the locking strength. When unlocked, the medical stainless steel ball head 7 can return to its original shape, ensuring the smoothness of the next angle adjustment.

[0050] Furthermore:

[0051] In an optional embodiment, the surface of the grip body 1 is provided with four sets of grip anti-slip grip grooves 16.

[0052] In this embodiment, four sets of grip anti-slip grip grooves 16 are provided on the surface of the grip body 1 to adapt to the natural curvature of the fingers. When the user grips the grip body 1, the fingers can be embedded in the grip anti-slip grip grooves 16. The contact between the groove wall and the fingers forms a limit to prevent relative sliding between the hand and the grip body 1. At the same time, the grip anti-slip grip grooves 16 distribute the gripping force of the hand to multiple contact points to avoid excessive local force.

[0053] Furthermore:

[0054] In an optional embodiment, the surface of the grip body 1 is covered with an anti-slip grip sleeve 17, and the surface of the anti-slip grip sleeve 17 is fixedly connected with a number of evenly distributed anti-slip protrusions 18.

[0055] In this embodiment, the anti-slip grip sleeve 17, which is fitted on the surface of the grip body 1, directly contacts the hand. Several sets of evenly distributed anti-slip protrusions 18 fixed on its surface can increase the friction between the hand and the anti-slip grip sleeve 17. The even distribution of the anti-slip protrusions 18 ensures balanced force when gripping and increases grip comfort, avoiding hand discomfort caused by an overly hard anti-slip structure. The detachable fitting method facilitates the replacement and cleaning of the anti-slip grip sleeve 17, improving the hygiene and durability of the components.

[0056] Furthermore:

[0057] In an optional embodiment, the anti-slip grip sleeve 17 is made of medical-grade TPE soft rubber, and a lightweight ABS skeleton is embedded in the inner layer of the grip body 1.

[0058] In this embodiment: the anti-slip grip sleeve 17 is made of medical-grade TPE soft rubber material, which has good softness and conformability. When in contact with the hand, it can adapt to the shape of the hand and enhance the grip comfort. At the same time, the medical-grade TPE soft rubber material itself has a certain friction, which can further improve the anti-slip effect. The lightweight ABS skeleton embedded in the inner layer of the grip body 1 provides rigid support for the grip body 1, ensuring that the grip body 1 will not bend or deform during use. At the same time, the lightweight design can reduce the overall weight of the components and reduce fatigue during long-term gripping.

[0059] Working principle:

[0060] When adjusting the angle, the user holds the handle body 1, and applies a directional force to the functional brush head 3 or the brush head connecting rod 2 with the other hand or with the help of other objects. This force is directly transmitted to the medical stainless steel ball head 7, which is fixedly connected to the brush head connecting rod 2. The medical stainless steel ball head 7 rolls in the ball head rotation groove 6 inside the angle adjustment seat 5. Due to the spherical fit, the medical stainless steel ball head 7 can rotate in any direction, thereby causing the brush head connecting rod 2 and the functional brush head 3 to change their spatial orientation relative to the handle body 1. At this time, the locking knob 8 is in the loose state, the clamping block 11 does not apply pressure to the inclined guide groove 9, and the angle adjustment seat 5 is in a naturally open state under the action of the elastic opening 10 of the adjustment seat, providing space for the rotation of the medical stainless steel ball head 7. The slight damping force generated by the interference fit between the medical stainless steel ball head 7 and the angle adjustment seat 5 can temporarily maintain the current angle after releasing the hand, which is convenient for the user to observe and fine-tune.

[0061] After adjusting the functional brush head 3 to the ideal angle, the user pinches the anti-slip groove 13 on the surface of the locking knob 8 with their fingers and rotates the locking knob 8. The locking knob 8 engages with the external thread of the angle adjustment seat 5 through its internal thread, generating a downward axial movement during rotation. As the locking knob 8 moves downward, the clamping wedge 11 fixed on its inner surface slides along the inclined guide groove 9 on the upper surface of the angle adjustment seat 5. The inclined surface of the clamping wedge 11 interacts with the inclined surface of the inclined guide groove 9, converting the axial movement of the locking knob 8 into a radial inward squeezing force on the top wall of the angle adjustment seat 5. This radial force forces the top of the angle adjustment seat 5 to undergo elastic contraction deformation, contracting... The inner wall of the angle adjustment seat 5 tightly presses against the outer spherical surface of the medical stainless steel ball head 7. At the same time, the elastic deformation grooves 15 on both sides of the medical stainless steel ball head 7 may undergo slight elastic deformation, making the fit tighter. When the angle needs to be changed, the user rotates the locking knob 8 in the opposite direction. The locking knob 8 rotates upward, and the clamping inclined block 11 rises accordingly, releasing the radial pressure on the inclined guide groove 9. The angle adjustment seat 5, relying on the elasticity of its own material, returns to its naturally open state through the elastic opening 10 of the adjustment seat. The clamping force between its inner wall and the medical stainless steel ball head 7 disappears, and the medical stainless steel ball head 7 returns to a free rotation state. The user can then perform the angle adjustment process again.

[0062] When it is necessary to replace the functional brush head 3, first, loosen the locking knob 8 to ensure that the angle adjustment seat 5 is completely relaxed. Then, pull the functional brush head 3 and the brush head connecting rod 2 in a direction away from the handle body 1. The pulling force is transmitted to the medical stainless steel ball head 7 through the brush head connecting rod 2. Previously, the medical stainless steel ball head 7 was held in the ball head rotation groove 6 by the friction of the interference fit. When the axial pulling force is greater than this friction force, the medical stainless steel ball head 7 will be pulled out from the angle adjustment seat 5. Then, align the new brush head connecting rod 2 assembly with the medical stainless steel ball head 7 with the opening of the angle adjustment seat 5 and apply axial pressure until it is inserted into place. You will hear a "click" or feel a clear sense of insertion. Then, the medical stainless steel ball head 7 is squeezed into the ball head rotation groove 6 of the angle adjustment seat 5, and the initial fixation is achieved by the interference fit.

[0063] When in use, the user's palm wraps around the handle body 1, and the fingers naturally fall into the anti-slip grip groove 16. The anti-slip grip groove 16 provides initial positioning and anti-slip. The outermost anti-slip grip sleeve 17 and its surface anti-slip protrusions 18 generate maximum static friction with the skin of the hand, effectively preventing the handle from slipping when wet or when the hand is weak. The internal lightweight ABS skeleton ensures that the handle body 1 has sufficient support rigidity when subjected to force and does not bend.

Claims

1. An adjustable-angle oral care toothbrush handle assembly, comprising a handle body (1), wherein a brush head connecting rod (2) is provided at the top end of the handle body (1), and a functional brush head (3) is fixedly connected to the top end of the brush head connecting rod (2), characterized in that: The top of the handle body (1) is fixedly connected to an adjustment mechanism base (4). An angle adjustment seat (5) is fixedly connected to the upper surface of the adjustment mechanism base (4). A ball head rotation groove (6) is opened on the inner surface of the angle adjustment seat (5). A medical stainless steel ball head (7) is provided inside the angle adjustment seat (5). The medical stainless steel ball head (7) rotates on the inner surface of the angle adjustment seat (5) through the ball head rotation groove (6). The medical stainless steel ball head (7) is fixedly connected to the brush head connecting rod (2). A locking knob (8) is threadedly connected to the surface of the angle adjustment seat (5). A sloping guide groove (9) is opened on the upper surface of the angle adjustment seat (5). Four sets of adjustment seat elastic openings (10) are evenly opened on the surface of the angle adjustment seat (5). A pressing sloping block (11) that cooperates with the sloping guide groove (9) is fixedly connected to the inner surface of the locking knob (8).

2. The adjustable-angle oral care toothbrush handle assembly according to claim 1, characterized in that: The inner surface of the angle adjustment seat (5) is provided with an arc-shaped fitting groove (12) that fits the outer surface of the medical stainless steel ball head (7).

3. The adjustable-angle oral care toothbrush handle assembly according to claim 1, characterized in that: The medical stainless steel ball head (7) is interference-fitted with the angle adjustment seat (5).

4. The adjustable-angle oral care toothbrush handle assembly according to claim 1, characterized in that: The surface of the locking knob (8) is evenly provided with six sets of knob anti-slip grooves (13).

5. The adjustable-angle oral care toothbrush handle assembly according to claim 1, characterized in that: The medical stainless steel ball head (7) has symmetrical ball head cut surfaces (14) on both sides.

6. The adjustable-angle oral care toothbrush handle assembly according to claim 1, characterized in that: The medical stainless steel ball head (7) has symmetrical elastic deformation grooves (15) on both sides.

7. The adjustable-angle oral care toothbrush handle assembly according to claim 1, characterized in that: The surface of the handle body (1) is provided with four sets of grip anti-slip grip grooves (16).

8. The adjustable-angle oral care toothbrush handle assembly according to claim 1, characterized in that: The surface of the grip body (1) is covered with an anti-slip grip sleeve (17), and the surface of the anti-slip grip sleeve (17) is fixedly connected with several sets of evenly distributed anti-slip protrusions (18).

9. An adjustable-angle oral care toothbrush handle assembly according to claim 8, characterized in that: The anti-slip grip sleeve (17) is made of medical-grade TPE soft rubber, and the inner layer of the grip body (1) is embedded with a lightweight ABS skeleton.

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