Combined cleaning brush

Abstract

The utility model discloses a combined cleaning brush, which relates to brush products and comprises a soft rubber body. One end of the hard rubber body is connected with the soft rubber body, a communicated ventilation channel is formed between the hard rubber body and the soft rubber body, and one end of the ventilation channel penetrates through the end of the hard rubber body; and the bristles are arranged at the other end of the hard rubber body. According to the utility model, the soft rubber body and the hard rubber body are combined, and the hard rubber body is used as a carrier for mounting the bristles to support the brush head, so that the brush head is kept stable in the cleaning process; the soft rubber realizes slight adjustment of the angle of the brush head by utilizing the flexibility of the soft rubber, so that the angle of the brush head can be adjusted, and the brush head can be more conveniently aligned with a corner difficult to clean. Meanwhile, the soft rubber body and the hard rubber body form a ventilation channel and can be used in cooperation with a dust collector, and during cleaning, dust can be sucked through negative pressure suction force generated by the dust collector, dust and residues can be thoroughly removed, and dust splashing is avoided.

Description

Technical Field

[0001] This utility model relates to brush products, specifically a combination cleaning brush. Background Technology

[0002] Hand-cranked coffee grinders, pour-over coffee grinders, and electric grinders require cleaning with a brush after grinding grains or coffee to remove any remaining powder. Common cleaning brush heads are made of nylon or PP (polypropylene), while the handles are made of rigid materials (such as wood, plastic, or metal). This design has the following drawbacks:

[0003] 1. Low cleaning efficiency: The brush head cannot be flexibly adjusted during the cleaning process, making it difficult to clean the corners of the machine's inner wall or the corners of the blade head.

[0004] Second, the cleaning effect is limited. It relies solely on the physical friction of the bristles, and the fixed angle of the brush head makes it difficult to remove coffee powder residue from the crevices of the brush, and it cannot completely remove fine dust or residue. Its function is relatively simple. Utility Model Content

[0005] The purpose of this invention is to provide a combined cleaning brush to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a combined cleaning brush, comprising:

[0007] Soft colloid;

[0008] A rigid colloid is connected to a soft colloid at one end, forming a ventilation channel between the rigid and soft colloids, with one end of the ventilation channel penetrating the end of the rigid colloid.

[0009] The bristles are located at the other end of the hard colloid.

[0010] Furthermore, a connecting ring is fixedly installed at the center of one end of the hard colloid where the bristles are located, and the connecting ring is connected to the ventilation channel.

[0011] Furthermore, a plug-in portion is fixedly installed at one end of the hard plastic body, and a plug-in hole matching the plug-in portion is opened at one end of the soft plastic body.

[0012] Furthermore, an annular protrusion is provided on the outer side of the plug portion.

[0013] Furthermore, a recessed ring is formed on the inner wall of the insertion hole.

[0014] Furthermore, both the protrusion and the concave ring are tapered structures.

[0015] Furthermore, one end of the hard colloid has multiple evenly distributed hair-implanting holes.

[0016] Furthermore, the angle of the hypotenuse of the tapered structure is 20-60 degrees.

[0017] Furthermore, the hard colloid and the soft colloid are detachably connected.

[0018] Furthermore, the hard colloid and the soft colloid are fixedly connected.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This invention combines soft and hard rubber materials. The hard rubber material serves as a carrier for the brush bristles, providing support and ensuring stability during cleaning. The soft rubber material, with its flexibility, allows for slight adjustments to the brush head angle, making it easier to target hard-to-reach corners. Simultaneously, the soft and hard rubber materials form a ventilation channel, enabling use with a vacuum cleaner. During cleaning, the negative pressure suction generated by the vacuum cleaner effectively removes dust and residue, preventing dust from splashing. Attached Figure Description

[0021] Figure 1 This is an exploded view of the present invention;

[0022] Figure 2 This is a structural diagram of the brush bristles and two colloids of this utility model;

[0023] Figure 3 This is a structural diagram of the present invention;

[0024] Figure 4 This is a cross-sectional view of the present invention.

[0025] In the diagram: 1. Soft gel; 2. Hard gel; 3. Bristles; 4. Connecting ring; 5. Ventilation channel; 6. Connecting part. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-2 As shown, this embodiment discloses a combined cleaning brush, including:

[0028] Soft body 1 is a soft cylindrical structure made of elastic rubber or silicone. It has a Shore hardness of A30-A50, possesses a certain degree of flexibility, and can maintain its bent state after bending. Both ends are open. Figure 1 and Figure 2 As shown, one end is a small opening and the other end is a large opening. The large opening can be plugged into the air inlet of the suction fan. The suction fan can be directly adopted from the market without any specific restrictions.

[0029] Hard colloid 2 is made of polypropylene / ABS material (acrylonitrile-butadiene-styrene copolymer) and serves as the main frame of the brush head, providing rigid support. Its wall thickness is >2.0mm, providing resistance to deformation.

[0030] One end of the hard colloid 2 is open, and the open side can be inserted into the small open end of the soft colloid 1. The hard colloid 2 and the soft colloid 1 are connected to form a ventilation channel 5. A connecting ring 4 is fixedly installed at the center of the other end of the hard colloid 2. A through hole is opened at the axis of the connecting ring 4. The connecting ring 4 is connected to the ventilation channel 5. The through hole serves as the through part of the ventilation channel 5, so that the ventilation channel 5 has an open structure at both ends.

[0031] The rigid colloid 2 has multiple evenly distributed hair-implanting holes at one end of the connecting ring 4, such as... Figures 2-4 As shown, the bristle holes are arranged in a ring array around the through hole. Bristles 3 are fixedly installed in the bristle holes for physical cleaning. They can be used to scrub the surface of containers or blades. The bristle material can be plastic bristles, nylon bristles, or animal and plant hair, etc., which can be selected according to the specific application scenario. The brush can be used to clean products such as hand-cranked coffee grinders and pour-over coffee grinders, as well as hard-to-reach areas such as deep containers, pipes, and the inside of instruments and equipment.

[0032] In this embodiment, the rigid colloid 2 and the soft colloid 1 are detachably connected. The specific design is as follows: Figure 1 and Figure 4 As shown, a connector 6 (which is integrally molded with the hard plastic body 2 during injection molding) is fixedly installed at one end of the hard plastic body 2 where it connects to the soft plastic body 1. An outwardly protruding protrusion is fixedly installed on the connector 6. This protrusion serves as a snap-fit ​​structure, enabling the connection between the two plastic bodies. Figure 1 As shown, the inverted snap-fit ​​structure is an inverted cone shape with an angle of 20-60 degrees, meaning the angle of the conical side is 20-60 degrees, and the inverted snap-fit ​​structure has at least two loops. By using this inverted snap-fit ​​structure, the stability of the connection between the two adhesive components is ensured, preventing them from easily detaching after assembly.

[0033] One end of the soft rubber body 1 has an insertion hole that matches the insertion part 6 and the inverted buckle structure. The side wall of the insertion hole has a concave ring that matches the inverted buckle structure. When the insertion part 6 is inserted into the insertion hole, the hard rubber body 2 and the soft rubber body 1 can be inserted together, and the two can be disassembled.

[0034] When using it, you can directly use the soft and hard gels and brush bristles together to clean the container; it can also be used with a vacuum cleaner. Plug the large opening of the soft gel 1 into the vacuum cleaner's suction port. When cleaning the container with the brush bristles, the negative pressure generated by the vacuum cleaner will cause the ventilation channel 5 to generate negative pressure, allowing for vacuuming while cleaning the container. When used with a vacuum cleaner, it achieves a one-stop operation of cleaning and vacuuming. Attach the cleaning brush to the vacuum cleaner, and use the vacuum cleaner's negative pressure to suck away the dust or residue generated during the brush cleaning process. This makes its use more flexible and diverse.

[0035] Alternatively, the brush head, consisting of the hard rubber body 2 and the bristles 3, can be removed from the soft rubber body 1, and the larger end of the opening of the soft rubber body 1 can be connected to the suction port of the vacuum cleaner for vacuuming under negative pressure.

[0036] In this embodiment, the detachable connection between the hard colloid 2 and the soft colloid 1 can be achieved not only by insertion but also by thread. For example, an external thread is provided on the outer side of the insertion part 6 of the hard colloid 2, and an internal thread is provided on the inner sidewall of the insertion hole of the soft colloid 1, so that the two colloids are connected together by threads.

[0037] Of course, to meet different usage needs, the hard colloid 2 and the soft colloid 1 can also be glued together.

[0038] In this application, the hard gel body 2 provides structural support to ensure the brush head remains stable during cleaning. The soft gel body 1, combined with the hard gel body 2, utilizes its flexibility to allow for slight adjustments to the brush head angle. When cleaning the container, the soft gel body 1 contacts the inner wall of the container (compared to existing hard cleaning brushes), reducing the contact area between the hard part and the inner wall of the container. In other words, the soft gel body effectively prevents the hard gel from directly contacting the container surface, thus protecting the inner wall of the container to a certain extent.

[0039] soft rubber Figure 1 Its flexibility allows the brush head to adjust its angle according to the shape of the container, making it easy to clean hard-to-reach areas such as the inner corners of the container, resulting in a more thorough cleaning.

[0040] In designing the product, the applicant also performed the following work and verified the product's advantages:

[0041] The pre-compression assembly process is adopted: the plug part 6 is pre-compressed with the soft rubber body by 0.3-0.5mm, and the contact pressure during operation is converted into structural stress;

[0042] Silicone material retains over 92% elastic recovery rate after 100,000 cycles of compression;

[0043] Test and verification:

[0044] The brush head passed the ISO20345:2011 standard bending resistance test: the maximum deformation under 50N pressure was ≤1.2mm, and the performance degradation after 1000 cycles of brushing was <3%.

[0045] When the soft colloid 1 comes into contact with the container, it forms a three-point support (based on the finite element analysis results), and the maximum deformation is controlled within 5% (enterprise standard Q / XXX-2023).

[0046] The three points of support are as follows:

[0047] 1. Support point for rigid plastic connector

[0048] Location: The connection point between the insertion part 6 of the hard colloid 2 and the insertion hole of the soft colloid 1, providing axial support force.

[0049] 2. Position of the support ring at the edge of the open end of the soft colloid:

[0050] Location: Edge area of ​​the large end of the opening of soft colloid 1

[0051] (When using silicone) Wall thickness 3-5mm, Shore hardness A40 (specific selection depends on the material), forming a 270° annular support surface when in contact with the container;

[0052] 3. Dynamic support zone in the middle of the soft colloid

[0053] Location: The area in contact between the middle of soft gel 1 and the inner wall of the container.

[0054] | (When using silicone) The wall thickness is 1.5-2.0mm, forming a variable support point (which changes as the brush head angle is adjusted).

[0055] Supporting mechanical model:

[0056] The insertion part 6 (fulcrum A) of the rigid colloid 2 provides rigid support, the edge of the large opening end (fulcrum B) provides surface contact support, and the middle dynamic zone (fulcrum C) provides flexible compensation support, forming a three-point support.

[0057] This design achieves the following: the rigid support structure provides more than 85% brush head rigidity, the soft colloid 1 allows for ±20° dynamic angle adjustment, and the contact pressure dispersion efficiency is improved by 60%, effectively solving the problems of traditional soft brush heads being prone to collapse and insufficient support.

[0058] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combination cleaning brush, characterized in that, include: Soft colloid; A rigid colloid is connected to a soft colloid at one end, forming a ventilation channel between the rigid and soft colloids, with one end of the ventilation channel penetrating the end of the rigid colloid. The bristles are located at the other end of the hard colloid.

2. The combined cleaning brush according to claim 1, characterized in that: A connecting ring is fixedly installed at the center of one end of the hard colloid where the bristles are located, and the connecting ring is connected to the ventilation channel.

3. A combined cleaning brush according to claim 2, characterized in that: One end of the hard rubber body is fixedly fitted with a plug-in part, and one end of the soft rubber body is provided with a plug-in hole that matches the plug-in part.

4. A combined cleaning brush according to claim 3, characterized in that: The outer side of the plug portion is provided with an annular protrusion.

5. A combined cleaning brush according to claim 4, characterized in that: A recessed ring is provided on the inner side wall of the insertion hole.

6. A combined cleaning brush according to claim 5, characterized in that: Both the protrusion and the concave ring are conical structures.

7. A combined cleaning brush according to claim 1, characterized in that: One end of the hard colloid has multiple evenly distributed hair-implanting holes.

8. A combined cleaning brush according to claim 6, characterized in that: The angle of the hypotenuse of the tapered structure is 20-60 degrees.

9. A combined cleaning brush according to claim 1, characterized in that: The hard colloid and the soft colloid are detachably connected.

10. A combined cleaning brush according to claim 1, characterized in that: The hard colloid and the soft colloid are fixedly connected.

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