Quick-change structure of brush disc of electric brush
Patent Information
- Application Number
- CN202521813142.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-26
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-08-26
AI Technical Summary
然而，现有电动清洗刷在实际使用中仍存在明显痛点：一方面，由于使用场景的多样性，不同场景需匹配不同尺寸的刷盘，而传统刷盘的更换过程往往较为繁琐，直接影响了用户的使用体验；另一方面，现有刷盘的中心区域为了设置与动力头连接的附接件，通常无法覆盖刷毛，这导致刷盘在高速旋转清洁时，中心区域会形成清洁盲区，难以对该部分待清洁表面进行有效擦洗，从而影响了整体的清洁效果
[0014] Compared with existing technologies, this utility model achieves the following beneficial effects: 1. The inner brush disc can be used to connect the outer brush disc and the power head, or it can be used independently as an inner brush disc, realizing two functions in a convenient and quick manner. 2. The inner brush disc is connected by a threaded connection, resulting in a stable structure, preventing the brush disc from easily falling off, and reducing costs. 3. Because the inner brush disc is located in the center, there are no blind spots during cleaning.
Smart Images
Figure CN224654878U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a quick-change structure for the brush disc of an electric brush, belonging to the field of power tool technology. Background Technology
[0002] With the continuous improvement of industrialization, the variety of power tools is becoming increasingly rich, and their functions are rapidly developing towards diversification. Among them, the electric cleaning brush, as a highly efficient and practical cleaning tool, relies on the working principle of a motor-driven brush head rotation to perform scraping operations on the object or surface to be cleaned. It has been widely used in various scenarios such as vehicle washing, kitchen utensil cleaning, floor and wall cleaning, significantly reducing the cleaning labor intensity for users. However, existing electric cleaning brushes still have significant pain points in actual use: on the one hand, due to the diversity of usage scenarios, different brush discs of different sizes are required for different scenarios, and the replacement process of traditional brush discs is often cumbersome, which directly affects the user experience; on the other hand, the central area of existing brush discs usually cannot cover the bristles in order to set up the attachments for connecting to the power head. This results in a cleaning blind spot in the central area when the brush disc rotates at high speed, making it difficult to effectively scrub the surface to be cleaned, thus affecting the overall cleaning effect. Utility Model Content
[0003] The purpose of this invention is to overcome the problems existing in the prior art and provide a quick-change structure for the brush disc of an electric brush, which can quickly replace the brush disc and has a sturdy structure that is not easily worn.
[0004] To solve the above technical problems, the present invention provides a quick-change structure for an electric brush, comprising: a brush disc and a power head. The brush disc is connected to the rotating shaft of the power head via an attachment component and rotates around the rotating shaft of the power head. The brush disc includes an outer brush disc and an inner brush disc. The inner brush disc is coaxial with the outer brush disc and placed in the inner ring of the outer brush disc. The inner brush disc and the outer brush disc are connected to form a large brush disc via a fastening component. The inner brush disc is connected to the power head via an attachment component. The attachment assembly is coaxially arranged with the power head, and the attachment assembly includes a threaded hole coaxially arranged with the rotating shaft. The center of the inner brush disk is screwed to the threaded hole by a screw.
[0005] Furthermore, the outer brush disk has a through-hole insertion ring in the middle, and the outer side of the insertion ring has several pin holes. The inner brush disk has a pin hole that matches the outer brush disk. The inner brush disk and the outer brush disk are fastened together by a pin that passes through the pin hole.
[0006] Furthermore, the inner brush disk is provided with a screw in the middle, and the inner brush disk is also provided with an annular groove that matches the insertion ring. The end of the insertion ring is embedded in the annular groove and abuts against the annular groove.
[0007] Furthermore, the screw is a stainless steel screw.
[0008] Furthermore, the attachment assembly also includes a protruding corner extending outward along the rotation axis, the protruding corner being inserted into a through hole in the middle of the insertion ring.
[0009] Furthermore, the outer diameter of the insertion ring is smaller than the inner diameter of the annular groove, and the outer diameter of the convex corner is smaller than the outer diameter of the inner brush disk.
[0010] Furthermore, the diameter of the insertion ring gradually decreases along the insertion direction of the convex angle.
[0011] Furthermore, five pin holes are evenly arranged around the insertion ring.
[0012] Furthermore, the convex corners are provided in four shapes, forming a cross, with the included angle between each convex corner being 90°.
[0013] Furthermore, one end of the pin is fixed inside the pin hole of the inner brush disk.
[0014] Compared with existing technologies, this utility model achieves the following beneficial effects: 1. The inner brush disc can be used to connect the outer brush disc and the power head, or it can be used independently as an inner brush disc, realizing two functions in a convenient and quick manner. 2. The inner brush disc is connected by a threaded connection, resulting in a stable structure, preventing the brush disc from easily falling off, and reducing costs. 3. Because the inner brush disc is located in the center, there are no blind spots during cleaning. Attached Figure Description
[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The drawings are provided for reference and illustration only and are not intended to limit the present invention.
[0016] Figure 1 This is a cross-sectional view of the quick-change structure of the electric brush of this utility model; Figure 2 A cross-sectional view showing the fastening connection between the large and small brush discs of the electric brush of this utility model. Figure 3 This is an exploded view of the quick-change structure of the electric brush disc in this utility model; Figure 4 This is an exploded view of the quick-change structure of the electric brush disc in this utility model.
[0017] Reference numerals: 1. Power head, 2. Outer brush disc, 3. Inner brush disc, 4. Threaded hole, 5. Screw, 6. Insertion ring, 6a. Through hole, 7. Pin hole, 8. Pin, 9. Annular groove, 10. Convex corner. Detailed Implementation
[0018] In the following description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device must have a specific orientation.
[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.
[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
[0021] like Figures 1 to 4 As shown, the present invention provides a quick-change structure for an electric brush, comprising: a brush disc and a power head 1. The brush disc is connected to the rotating shaft of the power head 1 via an attachment component and rotates around the rotating shaft of the power head 1. The brush disc includes an outer brush disc 2 and an inner brush disc 3. The inner brush disc 3 is coaxial with the outer brush disc 2 and placed in the inner ring of the outer brush disc 2. The inner brush disc 3 and the outer brush disc 2 are connected to form a large brush disc via a fastening component. The inner brush disc 3 is connected to the power head 1 via an attachment component. The attachment assembly is coaxially arranged with the power head 1. The attachment assembly includes a threaded hole 4 coaxially arranged with the rotating shaft. The center of the inner brush disk 3 is screwed to the threaded hole 4 via a screw 5. The screw 5 is a stainless steel screw 5.
[0022] The outer brush plate 2 has a through-hole insertion ring 6 in the middle, and several pin holes 7 are provided on the outer side of the insertion ring 6. Five pin holes 7 are evenly arranged around the insertion ring 6. The inner brush plate 3 has a pin hole 7 that matches the outer brush plate 2. The inner brush plate 3 and the outer brush plate 2 are fastened together by a pin 8 that passes through the pin hole 7. One end of the pin 8 can be fixed in the pin hole 7 of the inner brush plate 3. Alternatively, the pin 8 can be inserted into the pin hole of the inner brush plate 3 first, and then the pin 8 can be fixed to the outer brush plate 2.
[0023] The inner brush plate 3 has a screw 5 for installation in the middle. The inner brush plate 3 also has an annular groove 9 that matches the insertion ring 6. The end of the insertion ring 6 is embedded in the annular groove 9 and abuts against the annular groove 9. The outer diameter of the insertion ring 6 is smaller than the inner diameter of the annular groove 9, and the outer diameter of the convex angle 10 is smaller than the outer diameter of the inner brush plate 3.
[0024] The attachment assembly also includes a protruding corner 10 extending outward along the rotation axis, which inserts into the through hole 6a in the middle of the insertion ring 6. The insertion ring 6 gradually narrows in diameter along the insertion direction of the protruding corner 10, facilitating insertion and positioning. There are four protruding corners 10 arranged in a "cross" shape, with an included angle of 90° between each protruding corner 10. This invention employs a coaxial design of inner brush plate 3 and outer brush plate 2. The inner brush plate 3 covers the area in the center of the traditional brush plate that cannot be covered by the bristles due to the attachment, while the outer brush plate 2 covers the outer perimeter area. Together, they form a complete bristle coverage surface. When the brush plates rotate at high speed, the entire surface to be cleaned can be scrubbed without dead angles, effectively eliminating the central cleaning blind spot and significantly improving the comprehensiveness and effectiveness of cleaning.
[0025] This invention employs a coaxial design of inner brush plate 3 and outer brush plate 2. The inner brush plate 3 covers the area in the center of the traditional brush plate that cannot be covered by the bristles due to the attachment, while the outer brush plate 2 covers the outer perimeter area. Together, they form a complete bristle coverage surface. When the brush plates rotate at high speed, the entire surface to be cleaned can be scrubbed without dead angles, effectively eliminating the central cleaning blind spot and significantly improving the comprehensiveness and effectiveness of cleaning.
[0026] The above description is merely a preferred embodiment of the present utility model, showing and describing the basic principles, main features, and advantages of the present utility model. It is not intended to limit the scope of patent protection of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments. In addition to the above embodiments, the present utility model may have other implementations without departing from the spirit and scope of the present utility model. Various changes and improvements to the present utility model are also possible. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present utility model. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Technical features not described in the present utility model can be implemented by or using existing technology, and will not be elaborated here.
Claims
1. A quick-change structure for the brush disc of an electric brush, comprising: A brush disc and a power head, wherein the brush disc is connected to the rotation axis of the power head via an attachment assembly and rotates about the rotation axis of the power head, characterized in that: The brush disc includes an outer brush disc and an inner brush disc. The inner brush disc is coaxial with the outer brush disc and placed in the inner ring of the outer brush disc. The inner brush disc and the outer brush disc are connected to a large brush disc by a fastening assembly. The inner brush disc is connected to the power head by an attachment assembly. The attachment assembly is coaxially arranged with the power head, and the attachment assembly includes a threaded hole coaxially arranged with the rotating shaft. The center of the inner brush disk is screwed to the threaded hole by a screw.
2. The quick-change structure for the brush disc of the electric brush according to claim 1, characterized in that: The outer brush disk has a through-hole insertion ring in the middle, and the outer side of the insertion ring has several pin holes. The inner brush disk has pin holes that match the outer brush disk. The inner brush disk and the outer brush disk are fastened together by pins that pass through the pin holes.
3. The quick-change structure for the brush disc of the electric brush according to claim 2, characterized in that: The inner brush plate is provided with a screw in the middle and an annular groove that matches the insertion ring. The end of the insertion ring is embedded in the annular groove and abuts against the annular groove.
4. The quick-change structure for the brush disc of the electric brush according to claim 3, characterized in that: The screw is a stainless steel screw.
5. The quick-change structure for the brush disc of the electric brush according to claim 2, characterized in that: The attachment assembly also includes a protruding corner extending outward along the rotation axis, the protruding corner being inserted into a through hole in the middle of the insertion ring.
6. The quick-change structure for the brush disc of the electric brush according to claim 1, characterized in that: The outer diameter of the insertion ring is smaller than the inner diameter of the annular groove, and the outer diameter of the convex corner is smaller than the outer diameter of the inner brush disk.
7. The quick-change structure for the brush disc of the electric brush according to claim 5, characterized in that: The diameter of the insertion ring gradually decreases along the insertion direction of the convex angle.
8. The quick-change structure for the brush disc of the electric brush according to claim 2, characterized in that: The pin holes are evenly arranged in five places around the insertion ring.
9. The quick-change structure for the brush disc of the electric brush according to claim 2, characterized in that: The convex corners are provided in four shapes, forming a cross, with the included angle between each convex corner being 90°.
10. The quick-change structure for the brush disc of the electric brush according to claim 2, characterized in that: One end of the pin is fixed inside the pin hole of the inner brush plate.