Grinding and polishing brush with brush head convenient to replace

Abstract

The utility model belongs to the technical field of grinding and polishing brushes, and particularly relates to a grinding and polishing brush with a brush head convenient to replace, which comprises a machine body, a mounting seat is arranged at the lower end of the machine body, a limiting block is rotatably connected in the mounting seat, a limiting sleeve is fixedly connected at the lower end of the limiting block, and the limiting sleeve is in contact with the mounting seat. The lower end of the limiting sleeve is in contact with a brush, the upper end of the brush is fixedly connected with a positioning rod, and the outer side of the brush is fixedly connected with a mounting plate. The grinding and polishing brush is innovatively provided with the limiting sleeve, the mounting plate, the guide rod and the like, the limiting sleeve can be rotated to generate threaded motion with the positioning rod on the brush, the positioning rod can easily slide out of the limiting sleeve, the brush can be conveniently disassembled, the problem that the grinding and polishing brush is inconvenient to disassemble in the past is effectively solved, and the grinding and polishing brush is convenient to disassemble. The use convenience is greatly improved, and a user can replace and maintain the brush more easily.

Description

Technical Field

[0001] This utility model relates to the field of grinding and polishing brush technology, specifically to a grinding and polishing brush with an easy-to-replace brush head. Background Technology

[0002] Polishing brushes are essential tools in both industrial and handcrafted applications. They are primarily used for grinding and polishing the surfaces of various materials. In terms of material applicability, polishing brushes can handle a wide range of materials. For metals, they can remove rust and burrs, restoring a smooth finish, and are often used in the final stage of metal processing, such as for stainless steel kitchenware and automotive parts. For wood, they can smooth out uneven surfaces, making the woodwork smoother, and are commonly used in the furniture manufacturing industry. Plastics can also be handled well, playing a crucial role in the surface finishing of plastic products after demolding. Regarding bristle materials, there are natural materials like pig bristles, which are highly resilient and suitable for the initial grinding of materials requiring a high degree of surface roughness; and there are synthetic fiber materials, whose bristle length, density, and other parameters can be customized to meet different needs, performing excellently in fine polishing. According to the utility model disclosed in patent authorization announcement number CN222584708U, a card-type short-handled flat-head grinding and polishing brush includes a mounting head, the lower end of which is provided with bristles, and the upper end of which is fixedly connected with a connecting rod. The interior of the connecting rod is connected to a screw cylinder by a thread, and the upper end of the screw cylinder is fixedly connected with a connecting head. The edge of the connecting head is provided with an opening, and the connecting head is provided with a connecting mechanism.

[0003] In practical applications, the disassembly and replacement of grinding and polishing brushes present numerous inconveniences, significantly impacting ease of use. Their structural design makes disassembly relatively cumbersome, often requiring specialized tools and involving complex procedures. For users, this translates to a significant investment of time and effort in routine maintenance or brush replacement to suit different processing needs. This inconvenience not only reduces work efficiency but also risks damaging the equipment or brushes due to improper disassembly, further increasing operating costs and the complexity of subsequent maintenance. Utility Model Content

[0004] The purpose of this utility model is to provide a grinding and polishing brush with an easy-to-replace brush head, which solves the problem that grinding and polishing brushes are inconvenient to disassemble and replace during use, and are not convenient to use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a grinding and polishing brush with an easy-to-replace brush head, comprising a body, a mounting base at the lower end of the body, a limiting block rotatably connected inside the mounting base, a limiting sleeve fixedly connected to the lower end of the limiting block, the limiting sleeve contacting the mounting base, a brush at the lower end of the limiting sleeve, a positioning rod fixedly connected to the upper end of the brush, a mounting plate fixedly connected to the outer side of the brush, a guide rod fixedly connected to the upper end of the mounting plate, an annular groove inside the body, the annular groove slidably connected to the guide rod, and a limiting mechanism provided on the mounting plate.

[0006] Preferably, a protrusion is fixedly connected to the outer side of the limiting block, and the protrusion is slidably connected to the mounting base. Through the design of the protrusion, the limiting block can play a limiting role.

[0007] Preferably, the positioning rod and the limiting sleeve are connected by threads, and the positioning rod is movably connected to the limiting block. The design of the positioning rod can limit the movement of the brush.

[0008] Preferably, the limiting mechanism includes a limiting frame, the upper end of the mounting plate contacts the limiting frame, the limiting sleeve has a limiting groove inside, the lower end of the limiting frame is fixedly connected to a slider, the slider is slidably connected to the mounting plate, the left side of the slider is fixedly connected to a sliding rod, the sliding rod is slidably connected to the mounting plate, and the mounting plate is provided with a spring inside. Through the design of the limiting mechanism, the brush can be easily replaced while maintaining stable installation.

[0009] Preferably, the limiting frame contacts the brush, and the limiting frame is slidably connected to the limiting groove. Through the design of the limiting frame, it can limit the movement of the limiting sleeve.

[0010] Preferably, a limiting ring is fixedly connected inside the mounting plate, and the limiting ring is slidably connected to the slide rod. Through the design of the limiting ring, the slide rod can be limited.

[0011] Preferably, one end of the spring contacts the slide rod, and the other end of the spring contacts the mounting plate. Through the design of the spring, the limiting frame can be driven to limit the limiting sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model innovatively sets up components such as a limiting sleeve, a mounting plate, and a guide rod. Rotating the limiting sleeve can generate a threaded movement between it and the positioning rod on the brush, making it easy for the positioning rod to slide out of the limiting sleeve, thereby facilitating the disassembly of the brush. This design effectively solves the problem of inconvenient disassembly of grinding and polishing brushes in the past, greatly improving the convenience of use and making it easier for users to replace and maintain the brush.

[0014] 2. This utility model, by setting up components such as a limiting frame, a limiting groove, and a spring, can drive the limiting frame to move through the elastic force of the spring, so that the limiting frame slides into the limiting groove, thereby limiting the limiting sleeve and making the brush easy to disassemble and replace while maintaining stable installation. Attached Figure Description

[0015] Figure 1 The overall three-dimensional structure of this utility model Figure 1 ;

[0016] Figure 2 The overall three-dimensional structure of this utility model Figure 2 ;

[0017] Figure 3 For the present utility model Figure 1 Enlarged frontal sectional view;

[0018] Figure 4 For the present utility model Figure 3 Enlarged view of part A of the structure.

[0019] In the diagram: 1. Body; 2. Mounting base; 3. Limiting block; 31. Protrusion; 32. Limiting sleeve; 33. Brush; 34. Positioning rod; 4. Mounting plate; 41. Guide rod; 42. Ring groove; 5. Limiting mechanism; 51. Limiting frame; 52. Limiting groove; 53. Slider; 54. Sliding rod; 55. Limiting ring; 56. Spring. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4A grinding and polishing brush with easy-to-replace brush head includes a body 1. A mounting base 2 is provided at the lower end of the body 1. A limiting block 3 is rotatably connected inside the mounting base 2. A protrusion 31 is fixedly connected to the outer side of the limiting block 3. The protrusion 31 is slidably connected to the mounting base 2. The protrusion 31 can limit the limiting block 3 through its design. A limiting sleeve 32 is fixedly connected to the lower end of the limiting block 3. The limiting sleeve 32 contacts the mounting base 2. A brush 33 is contacted at the lower end of the limiting sleeve 32. A positioning rod 34 is fixedly connected to the upper end of the brush 33. The positioning rod 34 is threadedly connected to the limiting sleeve 32. The positioning rod 34 is movably connected to the limiting block 3. The positioning rod 34 can limit the brush 33 through its design. A mounting plate 4 is fixedly connected to the outer side of the brush 33. A guide rod 41 is fixedly connected to the upper end of the mounting plate 4. An annular groove 42 is opened inside the body 1. The annular groove 42 is slidably connected to the guide rod 41. A limiting mechanism 5 is provided on the mounting plate 4.

[0022] Please see Figure 2-4 The limiting mechanism 5 includes a limiting frame 51. The upper end of the mounting plate 4 contacts the limiting frame 51. A limiting groove 52 is opened inside the limiting sleeve 32. The limiting frame 51 contacts the brush 33. The limiting frame 51 and the limiting groove 52 are slidably connected. Through the design of the limiting frame 51, the limiting sleeve 32 can be limited. A slider 53 is fixedly connected to the lower end of the limiting frame 51. The slider 53 is slidably connected to the mounting plate 4. A sliding rod 54 is fixedly connected to the left side of the slider 53. The sliding rod 54 is slidably connected to the mounting plate 4.

[0023] Please see Figure 2-4 The mounting plate 4 has a fixed internal connection of a limiting ring 55, which is slidably connected to the slide rod 54. The limiting ring 55 is designed to limit the slide rod 54. The mounting plate 4 has a spring 56 inside, with one end of the spring 56 in contact with the slide rod 54 and the other end in contact with the mounting plate 4. The spring 56 is designed to drive the limiting frame 51 to limit the limiting sleeve 32. The limiting mechanism 5 is designed to keep the brush 33 stable while facilitating replacement.

[0024] The specific implementation process of this utility model is as follows: In use, by moving the square movable limiting frame 51 away from the limiting sleeve 32, the limiting frame 51 drives the slider 53 to move, and the slider 53 drives the sliding rod 54 to slide in the limiting ring 55, so that the sliding rod 54 squeezes the spring 56 and causes the limiting frame 51 to slide out of the limiting groove 52 on the limiting sleeve 32, thus releasing the limitation on the limiting sleeve 32;

[0025] By rotating the limiting sleeve 32, the limiting sleeve 32 and the positioning rod 34 will undergo threaded movement, thereby causing the positioning rod 34 to slide out of the limiting sleeve 32. The positioning rod 34 can then be used to remove the brush 33, allowing the brush 33 to be disassembled and replaced.

[0026] 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 polishing brush with a brush head that is easy to replace, comprising a body (1), characterized in that: The lower end of the machine body (1) is provided with a mounting seat (2), the inside of the mounting seat (2) is rotatably connected with a limiting block (3), the lower end of the limiting block (3) is fixedly connected with a limiting sleeve (32), the limiting sleeve (32) is in contact with the mounting seat (2), the lower end of the limiting sleeve (32) is in contact with a brush (33), the upper end of the brush (33) is fixedly connected with a positioning rod (34), the outer side of the brush (33) is fixedly connected with a mounting plate (4), the upper end of the mounting plate (4) is fixedly connected with a guide rod (41), the inside of the machine body (1) is provided with a ring groove (42), the ring groove (42) is slidably connected with the guide rod (41), and the mounting plate (4) is provided with a limiting mechanism (5).

2. The abrasive polishing brush with a replaceable brush head of claim 1, wherein: The outer side of the limiting block (3) is fixedly connected with a protruding block (31), and the protruding block (31) is slidably connected with the mounting seat (2).

3. The abrasive polishing brush of claim 1, wherein: The positioning rod (34) and the limiting sleeve (32) are connected through threads, and the positioning rod (34) and the limiting block (3) are movably connected.

4. The abrasive polishing brush of claim 1, wherein: The limiting mechanism (5) comprises a limiting frame (51), the upper end of the mounting plate (4) is in contact with the limiting frame (51), the inside of the limiting sleeve (32) is provided with a limiting groove (52), the lower end of the limiting frame (51) is fixedly connected with a sliding block (53), the sliding block (53) is slidably connected with the mounting plate (4), the left side of the sliding block (53) is fixedly connected with a sliding rod (54), the sliding rod (54) is slidably connected with the mounting plate (4), and the inside of the mounting plate (4) is provided with a spring (56).

5. The abrasive polishing brush of claim 4, wherein: The limiting frame (51) is in contact with the brush (33), and the limiting frame (51) is slidably connected with the limiting groove (52).

6. The abrasive polishing brush of claim 4, wherein: The inside of the mounting plate (4) is fixedly connected with a limiting ring (55), and the limiting ring (55) is slidably connected with the sliding rod (54).

7. The abrasive polishing brush of claim 4, wherein: One end of the spring (56) is in contact with the sliding rod (54), and the other end of the spring (56) is in contact with the mounting plate (4).

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