Cleaning tool with curled bristles at tail end

Abstract

The invention discloses a cleaning tool with bristles curled at the tail end, which comprises the bristles, a curled structure bent towards at least one side is arranged at the tail end of the bristles, and the bristles are fixed on a brush head of the cleaning tool. The curvature radius R of the curled structure ranges from 0.05 mm to 2 mm, and the bending angle alpha ranges from 90 degrees to 270 degrees. The curvature radius R of the curled structure and the diameter d of the bristles meet the formula: 0.2 < = R / d < = 5. And the bristles are arranged on the brush head at the density of 10-300 bristles / cm < 2 >. And an included angle beta between the arrangement direction of the bristles and the moving direction of the brush head is 0-75 degrees. The curl structure comprises a U-shaped curl, a hook-shaped curl, a door-shaped curl, a ring-shaped curl, a bent curl and a spiral curl. The toothbrush has the advantages that the contact area between the bristles and the working surface can be increased by 50%-300% compared with straight bristles, and stubborn attachments such as dental calculus and circuit board oxide can be effectively removed. The contact area is increased; and the curled structure 2 forms surface contact. The curling structure 2 applies lateral force to attachments through the combined action of sleeving pulling and hooking pulling so as to remove the attachments, and the ratio of lateral thrust to stubborn attachments is larger than 50%.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning tools with curled bristles at the ends, in particular to a cleaning tool with curled bristles at the ends. Background Art

[0002] Traditional straight-bristle brushes have a linear contact surface and a blind spot. They are easy to damage the surface being cleaned, and the stress concentration at the tip of the straight bristles causes surface damage (for example, traditional toothbrushes cause scratches on the surface of teeth). When cleaning stubborn attachments, the angle θ between the bristles and the surface decreases as the pressure increases, such as Figure 7 , resulting in the component Fx = F·cosθ of the friction force F = μN along the tangent direction of the surface. The effective lateral force (Fx) actually acting on the attachment is greatly reduced, the cleaning efficiency is low, and the vertical pressure N is concentrated on the surface, which can easily cause scratches.

[0003] Although some people have proposed wavy bristles (USPTO 8,234,567), the contact area improvement is limited. The present invention achieves surface contact cleaning through the end curling structure, which fundamentally solves the above problem. Summary of the invention

[0004] The object of the present invention is to provide a cleaning tool with curled bristles at the ends to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention discloses a cleaning tool with curled bristles at the end, comprising bristles. The ends of the bristles are provided with a curling structure bent toward at least one side, and the bristles are fixed to a brush head of the cleaning tool.

[0007] As an improvement, the curvature radius R of the curled structure is 0.05 mm to 2 mm, and the bending angle α is 90° to 270°.

[0008] As an improvement, the curvature radius R of the curling structure and the bristle diameter d satisfy: 0.2≤R / d≤5.

[0009] As an improvement, the bristles are arranged at a density of 10 to 300 bristles / cm 2 Arranged on the brush head.

[0010] As an improvement, the angle β between the arrangement direction of the bristles and the moving direction of the brush head is 0° to 75°.

[0011] As an improvement, the curling structure includes U-shaped curling, hook-shaped curling, gate-shaped curling, loop-shaped curling, bent curling, and spiral curling.

[0012] The advantages of the present invention over the prior art are: the bristles of the present invention have a curled structure with a curvature radius of 0.05mm to 2mm, and the contact area can be increased by 50% to 300% compared with straight bristles, which can effectively remove stubborn attachments such as dental calculus, tableware stains and circuit board oxides. The bristles of the present invention also perform well in makeup and painting scenes, because of its unique curved structure at the end, it has a better adsorption and carrying effect on liquids. When the bristles are extremely fine and densely arranged, they have an excellent capture effect on light dust particles.

[0013] The curled structure produces nonlinear force deformation during the cleaning process: when the bristles move along the cleaning surface, the curled part contacts the side of the attached object, and the direction of the deformation recovery force F_r is at an angle of 45° to 90° with the moving direction (see Figure 8 ), forming a lateral thrust F_y = F_r·sinθ, whose value can reach 3 to 5 times that of a traditional straight brush.

[0014] Increased contact area: The curled structure forms surface contact.

[0015] Mechanical optimization: The curled structure applies lateral force to the attachment through the combined action of "pull-hook" to remove the attachment, and the lateral thrust on the stubborn attachment accounts for more than 50%

[0016] Anti-damage design: The curvature disperses the pressure, reduces the pressure per unit area, and reduces damage to the surface being cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings listed below are only some structural schematic diagrams of the present invention, not all of them.

[0018] Figure 1 It is a schematic structural diagram of the U-shaped curled bristles of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the hook-shaped curled bristles of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the gate-shaped curled bristles of the present invention.

[0021] Figure 4 It is a schematic structural diagram of the ring-shaped curled bristles of the present invention.

[0022] Figure 5 It is a schematic structural diagram of the bent and curled bristles of the present invention.

[0023] Figure 6 It is a schematic structural diagram of the spiral curled bristles of the present invention.

[0024] Figure 7 This is a force analysis diagram of traditional straight hair.

[0025] Figure 8 This is a force analysis diagram of the bristles.

[0026] Reference numerals:

[0027] Bristles 1; curling structure 2; brush head 3. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In addition, if the terms "first", "second", "third", etc. appear, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance. If the terms "horizontal", "vertical", "overhanging", etc. appear, it does not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of the embodiments of the present invention, if the terms "multiple" or "several" appear, they represent at least two.

[0032] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] This embodiment combines the attached Figures 1 to 8 , a cleaning tool with curled bristles at the ends is described in detail.

[0034] The present embodiment provides a cleaning tool with curled bristles at the ends, comprising bristles 1. The ends of the bristles 1 are provided with curling structures 2 that are bent toward at least one side. The bristles 1 are fixed to a brush head 3 of the cleaning tool.

[0035] The curvature radius R of the curled structure 2 is 0.05 mm to 2 mm, and the bending angle α is 90° to 270°.

[0036] The curvature radius R of the curled structure 2 and the bristle diameter d satisfy: 0.2≤R / d≤5.

[0037] The bristles 1 have a density of 10 to 300 bristles / cm 2 Arranged on the brush head 3.

[0038] The angle β between the arrangement direction of the bristles 1 and the moving direction of the brush head 3 is 0° to 75°, so as to optimize the lateral thrust output.

[0039] The curling structure 2 includes U-shaped curling, hook-shaped curling, gate-shaped curling, loop-shaped curling, bent curling, and spiral curling.

[0040] The bristles 1 can be made of materials such as plastic, nylon, carbon fiber, plant fiber, animal hair, polyester or polybutylene terephthalate.

[0041] The cleaning tool also includes a tool in which the bristles 1 of the curled structure 2 and the straight bristles are alternately arranged to form a composite cleaning surface.

[0042] The method for preparing the bristles 1 comprises the following steps:

[0043] (1) Injection molding the bristle raw material into a straight blank;

[0044] (2) Performing local heat treatment on the end of the straight blank at a temperature of 80°C to 160°C for 5 to 60 seconds;

[0045] (3) During the heat treatment process, a directional pressure is applied to the end through the mold to form the curled structure 2.

[0046] In specific implementation, the bristles 1 are used for cleaning, and are suitable for scenes such as oral care, industrial cleaning, precision instrument maintenance, body beauty, wall painting, etc. Due to its unique end bending structure 2, it has a better adsorption and carrying effect on liquids, and when the bristles are extremely fine and densely arranged, it has an excellent capture effect on light and small dust particles.

[0047] The end of the bristle 1 has a curled structure 2 with a curvature radius of 0.05mm to 2mm, and its contact area can be increased by 50% to 300% compared with straight bristles, and stubborn attachments such as dental calculus and circuit board oxides can be effectively removed.

[0048] U-shaped curly hair with a curvature radius of R = 0.2mm is selected, and the material is ultra-fine nylon (diameter 0.1mm). When testing to remove cured glue stains on the glass surface, the traditional brush requires a pressure of 5N and repeated wiping 20 times, while the brush 1 only requires a pressure of 2N and two wipings to remove.

[0049] The curled structure 2 generates nonlinear force deformation during the cleaning process: when the bristles move along the cleaning surface, the curled part contacts the side of the attached object, and the direction of the deformation recovery force F_r is at an angle of 45° to 90° with the moving direction (see Figure 8 ), forming a lateral thrust F_y = F_r·sinθ, whose value can reach 3 to 5 times that of a traditional straight brush.

[0050] Increased contact area: The curled structure 2 forms a surface contact.

[0051] Mechanical optimization: The curling structure 2 applies lateral force to the attachment through the combined action of "pull-hook" to remove the attachment, and the lateral thrust on the stubborn attachment accounts for more than 50%

[0052] Anti-damage design: The curvature disperses the pressure, reduces the pressure per unit area, and reduces damage to the surface being cleaned.

[0053] Quantitative description of the mechanical principle of the bristle 1:

[0054] >Compare the forces exerted by the two types of bristles on surface attachments through finite element simulation (ANSYS Workbench):

[0055] >- Traditional straight brush: vertical pressure accounts for 85%, lateral thrust accounts for 15%;

[0056] >-This curling brush: vertical pressure accounts for 40%, lateral thrust accounts for 60% (see Figure 8 Vector force distribution diagram).

[0057] >The increase in lateral thrust significantly reduces the risk of surface damage (scratch depth on simulated enamel surface reduced by 70%).

[0058] The present invention and its embodiments are described above, and such description is not restrictive, and the actual protection scope is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A cleaning tool with curled bristles at the end, characterized in that: The brush comprises bristles (1), the ends of the bristles (1) are provided with a curling structure (2) bent towards at least one side, and the bristles (1) are fixed to a brush head (3) of a cleaning tool.

2. A cleaning tool with curled bristles at the end according to claim 1, characterized in that: The curvature radius R of the curled structure (2) is 0.05 mm to 2 mm, and the bending angle α is 90° to 270°.

3. A cleaning tool with curled bristles at the end according to claim 2, characterized in that: The curvature radius R of the curling structure (2) and the bristle diameter d satisfy: 0.2≤R / d≤5.

4. A cleaning tool with curled bristles at the end according to claim 1, characterized in that: The bristles (1) have a density of 10 to 300 bristles / cm 2 Arranged on the brush head (3).

5. A cleaning tool with curled bristles at the end according to claim 4, characterized in that: The angle β between the arrangement direction of the bristles (1) and the moving direction of the brush head (3) is 0° to 75°.

6. A cleaning tool with curled bristles at the end according to claim 1, characterized in that: The curling structure (2) includes U-shaped curling, hook-shaped curling, gate-shaped curling, loop-shaped curling, bent curling, and spiral curling.

7. A cleaning tool with curled bristles at the end according to claim 1, characterized in that: The method for preparing the bristles (1) comprises the following steps: (1) Injection molding the bristle raw material into a straight blank; (2) Performing local heat treatment on the end of the straight blank at a temperature of 80°C to 160°C for 5 to 60 seconds; (3) During the heat treatment process, a directional pressure is applied to the end through the mold to form the curled structure (2).

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