Water drop hole type handheld wire brush

Abstract

The utility model relates to the technical field of hardware tool manufacturing, in particular to a water drop hole type handheld steel wire brush. Which comprises a panel, a brush handle area and a brush wire area which are integrally formed, and is characterized in that a water drop hanging hole is formed in one end of the brush handle area, the brush handle area comprises a hard rubber area and a soft rubber area, the hard rubber area is formed by hard rubber 5017 blue materials in an injection molding mode, the surface roughness Ra of the hard rubber area is smaller than or equal to 3.2 micrometers, the soft rubber area is formed by soft rubber black TPR in a wrapping mode, and the surface roughness Ra of the soft rubber area is smaller than or equal to 3.2 micrometers. Through ergonomics optimization, operation is comfortable and efficient, the double-material composite brush handle (hard rubber and soft rubber) provides rigid-soft combined holding experience, the hard rubber area (5017 blue material) ensures structural rigidity, the hardness is 85 + / -3 HD, deformation is prevented, durability is improved, the soft rubber area (black TPR) provides buffering and damping, the elastic modulus is 8 + / -0.5 MPa, and hand fatigue is reduced; sharp edges are eliminated through arc transition and R angle treatment, and hand discomfort caused by long-time use is avoided; the design of the water drop hanging hole is convenient for hanging and storage, and accords with a natural hand shape during holding.

Description

TECHNICAL FIELD

[0001] The utility model relates to hardware tool manufacturing technical field, especially a water drop hole type handheld steel wire brush. BACKGROUND

[0002] In the industrial production and daily cleaning field, steel wire brush as an important surface treatment tool, its performance directly influences work efficiency and operation quality. The handheld steel wire brush on the market mainly has the following technical defects:

[0003] Poor structural reliability: split design leads to easy fracture of the connection between the panel and the brush handle (common failure position stress concentration up to 80MPa); no reinforcing base at the brush wire root, shedding rate >5% (industry average level);

[0004] Low cleaning efficiency: loose brush wire arrangement (tolerance ±0.3mm), cleaning coverage rate less than 40%;

[0005] Brush wire straightness deviation >3°, leading to uneven surface scratching;

[0006] Defects in human-machine engineering: hard brush handle (Shore hardness >90HD) leads to palm fatigue, and discomfort appears after 15 minutes of continuous use.

[0007] Chinese patent discloses a steel wire cutter brush (publication number: CN 206979071 U) including steel wire bristles, a brush handle and a strip-shaped brush handle, the cross section of the brush handle is U-shaped, has an inner cavity and a clamping opening, a pressing strip is arranged in the inner cavity, the steel wire bristles are pressed in the inner cavity at one end of the brush handle by the pressing strip, the two ends of the steel wire bristles extend outward from the clamping opening, and the brush handle is inserted and fixed with the brush handle. However, this steel wire cutter brush has the defects that the split design leads to easy fracture of the connection between the panel and the brush handle; no reinforcing base at the brush wire root, shedding rate >5%; therefore, a water drop hole type handheld steel wire brush is needed. UTILITY MODEL CONTENTS

[0008] The utility model aims at solving the defects in the prior art that the split design of the steel wire cutter brush leads to easy fracture of the connection between the panel and the brush handle; no reinforcing base at the brush wire root, shedding rate >5%, and provides a water drop hole type handheld steel wire brush

[0009] The utility model discloses a technical scheme that solves its technical problem is adopted: a kind of water droplet hole type handheld steel wire brush of the utility model, including integrally-formed panel, brush handle area and brush silk area, it is characterized by: the brush handle area one end is equipped with water droplet hanging hole, the brush handle area includes hard glue area and soft glue area, the hard glue area is formed by injection molding using hard glue 5017 blue material and surface roughness Ra≤3.2 μm, the soft glue area is formed by soft glue black TPR overmolding, the panel and the brush handle junction are equipped with arc transition part, overall profile is treated by R angle and eliminates sharp edge.Water droplet hanging hole realizes tool vertical suspension, avoid brush silk deformation (keep ≤1.5 ° straightness) under pressure;Save work space, meet 5S field management requirement structure reliability: integrally-formed avoids joint cracking, 49.5mm arc transition part disperses stress, reduces fracture risk (actual test life improves 40%));Ergonomics: hard glue+soft glue partition design, hard glue provides support force (85HD hardness) when holding, soft glue (8MPa elastic modulus) buffer vibration;Safety: R angle treatment eliminates sharp edge, and the risk of panel scratch reduces 90% (meet EN ISO 12100 safety standard).

[0010] Preferably, the hard glue 5017 blue material has a Shore hardness of 85±3HD, a melt index of 12±0.5 g / 10 min, the soft glue black TPR has a tensile strength of ≥15 MPa, and an elastic modulus in the range of 8±0.5 MPa. The melt index of 12±0.5 g / 10 min ensures the consistency of material flowability during injection molding, with a flash defect rate of <0.5%, which is 30% better than conventional processes; the elastic modulus of 8±0.5 MPa matches the vibration frequency of the steel wire brush, and the fatigue life is extended to 15,000 times (ISO 9352).

[0011] Preferably, the brush silk area includes 165±0.5 columns of steel wire bundle arrays, each column contains 5±0.2 bundles of brush silk, and each bundle of brush silk has a straightness deviation of ≤1.5°, the spacing tolerance between adjacent brush silks is controlled within ±0.1 mm, the total length of the steel wire bundle array is 49.5±0.5 mm, and the width is 8±0.5 mm. The 165-column array increases the cleaning coverage per unit area by 60%; the ±0.1 mm spacing tolerance avoids entanglement of the brush silks, and the maintenance cost is reduced by 70%; the 8 mm base diameter makes the single bundle pull-out force ≥50 N (far exceeding the requirement of 30 N).

[0012] Preferably, the brush silk is made of high-carbon steel wire with a diameter of 0.15±0.01 mm, which is treated with copper plating to form a 3-5 μm protective layer. The 3-5 μm copper plating layer has no rust after 168 hours of salt spray testing; the 0.15 mm diameter + high-carbon steel wire has a fatigue life of 8,000 times (2 times higher than ordinary steel wire).

[0013] Preferably, the effective working length of the single bundle of bristles is 15±1mm, the single bundle of bristles has a tensile strength of greater than or equal to 30N, and the root of the single bundle of bristles is provided with a reinforcing base with a diameter of 8±0.5mm. The effective working length of 15±1mm is designed to ensure a minimum cleaning contact surface of 14mm while avoiding bending deformation of more than 16mm, thereby improving the cleaning efficiency by 40%. The innovative reinforcing base with a diameter of 8±0.5mm enhances the pull-out resistance to more than 50N through a mechanical interlocking structure, thereby reducing the shedding rate of the bristles to less than 0.1% from an industry average of 5%.

[0014] Preferably, the panel has a water droplet-shaped hole type distribution structure and a width of 13±0.5mm. The water droplet-shaped hole type (sharp front end and round rear end) conforms to the principle of aerodynamics and can effectively guide dirt and cleaning agent out of the hole during brushing, thereby reducing residue (by 55% in actual measurement), avoiding the "vortex effect" caused by traditional round or square holes, and preventing dirt from accumulating in the hole. The gradually changing profile (from narrow to wide) of the water droplet-shaped hole type disperses the stress on the panel, and the bending strength reaches 120MPa (40% higher than that of a traditional round hole structure).

[0015] The utility model has the advantages that:

[0016] The present application is optimized by human engineering, comfortable and efficient operation, and the double-material composite brush handle (hard rubber + soft rubber) provides a rigid and flexible holding experience: the hard rubber area (5017 blue material) ensures structural rigidity, with a hardness of 85±3HD, preventing deformation and improving durability, and the soft rubber area (black TPR) provides cushioning and shock absorption, with an elastic modulus of 8±0.5MPa, reducing hand fatigue; the arc transition and R-angle treatment eliminate sharp edges, avoiding hand discomfort caused by long-term use; the water droplet-shaped hanging hole design facilitates hanging and storage, while conforming to the natural hand shape during holding, improving operation stability; the high-precision bristle array provides more uniform cleaning effect, with a high-density arrangement of 165±0.5 rows x 5±0.2 bundles / row, ensuring cleaning coverage without dead angles; the bristle spacing tolerance is ±0.1mm, avoiding bristle entanglement or uneven distribution and improving cleaning consistency; the single bundle bristle straightness deviation is less than or equal to 1.5°, ensuring that each steel wire is subjected to vertical force, reducing bias grinding, and prolonging service life; the high-carbon steel wire (diameter 0.15±0.01mm) + copper plating anti-rust layer (3-5μm) improves corrosion resistance by more than 50%, suitable for humid or chemical environments; the single bundle tensile strength is greater than or equal to 30N, cooperating with the 8±0.5mm reinforcing base, preventing bristle shedding and improving impact resistance; the hard rubber surface roughness Ra is less than or equal to 3.2μm, enhancing the friction coefficient and providing better anti-slip performance than ordinary plastic handles; the water droplet-shaped panel (width 13±0.5mm) optimizes stress distribution, reduces material waste, and ensures structural strength; the hard rubber melt index is 12±0.5g / 10min, ensuring stable injection flowability and reducing air bubbles or shrinkage defects; the soft rubber TPR overmolding process is mature and has high bonding strength, preventing delamination. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This utility model Figure 1 A magnified view of A in the middle.

[0020] Figure 3 This is a schematic diagram of the structure of this utility model from a bottom view.

[0021] In the diagram: 1. Hard rubber area; 2. Water droplet hanging hole; 3. Soft rubber area; 4. Arc-shaped transition section; 5. Steel wire bundle array; 6. Brush bristles; 7. Panel; 8. Reinforcing base. Detailed Implementation

[0022] 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 scope of protection of the present utility model.

[0023] Example

[0024] Please see Figures 1-3As shown, a water droplet hole type handheld steel wire brush includes an integrally formed faceplate 7, a brush handle area, and a brush wire 6 area, characterized in that: the brush handle area is provided with a water droplet hanging hole 2 at one end, the brush handle area includes a hard rubber area 1 and a soft rubber area 3, the hard rubber area 1 is injection molded with hard rubber 5017 blue material and the surface roughness Ra≤3.2μm, the soft rubber area 3 is overmolded with soft rubber black TPR, the faceplate 7 is provided with an arc-shaped transition part 4 at the connection with the brush handle, and the overall profile is treated with an R angle to eliminate sharp edges. The water droplet hanging hole 2 realizes vertical hanging of the tool, avoids deformation of the brush wire 6 under pressure (maintains ≤1.5° straightness), saves work space, meets the requirements of 5S site management, and has reliable structure: integrally formed to avoid joint cracking, 49.5mm arc-shaped transition part 4 disperses stress and reduces the risk of breakage (actual life is improved by 40%); human engineering: hard rubber + soft rubber partition design, hard rubber provides support force (85HD hardness) when holding, and soft rubber (8MPa elastic modulus) cushions vibration; safety: R angle treatment eliminates sharp edges, reduces the risk of faceplate 7 scratches by 90% (meets EN ISO 12100 safety standards).

[0025] In this embodiment, the hard rubber 5017 blue material has a Shore hardness of 85±3HD and a melt index of 12±0.5g / 10min, the tensile strength of the soft rubber black TPR is ≥15MPa, and the elastic modulus is in the range of 8±0.5MPa. The melt index of 12±0.5g / 10min ensures consistent material flowability during injection molding, with a flash defect rate of <0.5%, which is 30% better than conventional processes; the elastic modulus of 8±0.5MPa matches the vibration frequency of the steel wire brush, and the fatigue life is extended to 15,000 times (ISO 9352).

[0026] In this embodiment, the brush wire 6 area includes 165±0.5 column steel wire bundle arrays 5, each column contains 5±0.2 bundles of brush wires 6, and the straightness deviation of each bundle of brush wires 6 is ≤1.5°, the spacing tolerance between adjacent brush wires 6 is controlled within ±0.1mm, the total length of the steel wire bundle array 5 is 49.5±0.5mm, and the width is 8±0.5mm. The 165 column array increases the cleaning coverage per unit area by 60%; the ±0.1mm spacing tolerance avoids entanglement of the brush wires 6, reducing maintenance costs by 70%; and the 8mm base diameter makes the single bundle pull-out force ≥50N (far exceeding the requirement of 30N).

[0027] In this embodiment, the brush wire 6 is made of high-carbon steel wire with a diameter of 0.15±0.01mm, which is treated with copper plating to form a 3-5μm protective layer. The 3-5μm copper plating layer has no rust after 168 hours of salt spray testing; the 0.15mm diameter + high-carbon steel wire has a fatigue life of 8000 times (2 times higher than ordinary steel wire).

[0028] In this embodiment, the effective working length of a single bundle of brush bristles 6 is 15±1mm, the tensile strength of a single bundle of brush bristles 6 is ≥30N, and a reinforcing base 8 with a diameter of 8±0.5mm is provided at the root of the brush bristles 6. The 15±1mm effective working length design ensures a minimum cleaning contact area of ​​14mm while avoiding bending deformation of more than 16mm, thereby improving cleaning efficiency by 40%. The innovative 8±0.5mm diameter reinforcing base 8, through a mechanical interlocking structure, increases the pull-out resistance to more than 50N, reducing the brush bristle detachment rate from the industry average of 5% to below 0.1%.

[0029] In this embodiment, the panel 7 has a teardrop-shaped perforation structure with a width of 13±0.5mm. The teardrop-shaped perforation (pointed at the front end and rounded at the back end) conforms to aerodynamic principles, effectively guiding dirt and detergent out of the holes during the brushing process, reducing residue (measured detergent residue is reduced by 55%), avoiding the "vortex effect" caused by traditional round or square holes, and preventing dirt from accumulating inside the holes; the gradual contour of the teardrop-shaped perforation (from narrow to wide) disperses the stress on the panel 7, and the bending strength reaches 120MPa (40% higher than the traditional round hole structure).

[0030] The implementation principle of this embodiment is as follows: The user holds the soft-hard composite brush handle, the hard rubber area 1 provides support, the soft rubber area 3 absorbs vibration and reduces hand fatigue, the arc-shaped transition part 4 optimizes force transmission and avoids stress concentration leading to breakage; the high-density steel wire bundle array 5 (165 columns × 5 bundles) evenly distributes pressure to avoid localized wear, the bristles 6 have a straightness of ≤1.5° to ensure vertical force application, improve scraping efficiency, and reduce ineffective friction; the copper-plated high-carbon steel wire has moderate hardness, which can effectively remove stubborn stains without excessively damaging the surface being cleaned; the reinforcing base 8 (diameter 8±

[0031] The brush bristles are fixed at 6 points (0.5mm) to prevent them from falling off due to repeated bending; the TPR soft rubber coating absorbs the impact and vibration during operation, reducing the risk of metal fatigue; the hard rubber surface with a roughness Ra≤3.2μm enhances grip stability and prevents slipping even when wet or oily; the water droplet hanging hole 2 facilitates hanging and storage, preventing the brush bristles from deforming due to careless placement.

[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A teardrop-shaped handheld wire brush, comprising an integrally formed panel (7), a handle area, and a bristle (6) area, characterized in that... The brush handle area is provided with a water droplet hanging hole (2) at one end. The brush handle area includes a hard rubber area (1) and a soft rubber area (3). The hard rubber area (1) is injection molded with hard rubber 5017 blue material and the surface roughness Ra≤3.2μm. The soft rubber area (3) is covered with soft rubber black TPR. The panel (7) is provided with an arc transition part (4) at the connection between it and the brush handle. The overall outline is treated with R-angle to eliminate sharp edges.

2. The teardrop-shaped handheld wire brush according to claim 1, characterized in that: The hard 5017 blue material has a Shore hardness of 85±3HD and a melt flow index of 12±0.5g / 10min. The soft black TPR has a tensile strength ≥15MPa and an elastic modulus in the range of 8±0.5MPa.

3. The teardrop-shaped handheld wire brush according to claim 1, characterized in that: The bristle (6) area contains 165±0.5 columns of steel wire bundle array (5), each column contains 5±0.2 bundles of bristles (6) and the straightness deviation of each bundle of bristles (6) is ≤1.5°, the spacing tolerance between adjacent bristles (6) is controlled within ±0.1mm, the total length of the steel wire bundle array (5) is 49.5±0.5mm and the width is 8±0.5mm.

4. A teardrop-shaped handheld wire brush according to claim 3, characterized in that: The brush bristles (6) are made of high carbon steel wire with a diameter of 0.15±0.01mm, and are coated with copper for rust prevention to form a 3-5μm protective layer.

5. A teardrop-shaped handheld wire brush according to claim 1, characterized in that: The effective working length of a single bundle of brush bristles (6) is 15±1mm, the tensile strength of a single bundle of brush bristles (6) is ≥30N, and a reinforcing base (8) with a diameter of 8±0.5mm is provided at the root of the brush bristles (6).

6. A teardrop-shaped handheld wire brush according to claim 1, characterized in that: The panel (7) has a teardrop-shaped pore distribution structure with a width of 13±0.5mm.

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