A stowable undercarriage gap cleaning brush
By designing a retractable car chassis crevices cleaning brush, and utilizing structures such as sliders, moving plates, and threaded rods, the brush head angle can be flexibly adjusted, solving the cleaning inconvenience and portability problems caused by the fixed brush head angle in existing technologies, thus improving cleaning efficiency and convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUZHOU HUACE DEYU AUTOMOBILE TECHNOLOGY CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-02
AI Technical Summary
Existing car chassis gap cleaning brushes have a fixed brush head angle that cannot be flexibly adjusted, making it difficult to reach deep into the gaps. They also take up a lot of space and are inconvenient to carry.
A retractable cleaning brush for cleaning gaps in automotive chassis was designed. Through the cooperation of sliders, moving plates, and limiting blocks, the sliding slider releases the limitation on the rotating shaft and adjusts the brush head angle. The threaded rod, rotating block, and nut work together to flexibly adjust the opening and closing angle between the rotating block and the grip shell to prevent rotation. A convex rotating shaft, snap rings, and washers are used to enhance fixation and cushioning.
It allows for flexible adjustment of the brush head angle to adapt to different gaps, improves cleaning efficiency, reduces space occupation, and is easy to carry and store.
Smart Images

Figure CN224306974U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of car cleaning, specifically a retractable car chassis crevices cleaning brush. Background Technology
[0002] The gaps in a car chassis are irregularly shaped and narrow, and they easily accumulate dirt, dust and other debris. When cleaning with a cleaning brush, because the gaps vary in depth and angle, it is often difficult to reach the inner wall of the gap due to the fixed angle of the brush head. If you force it in, the brush head may become crooked due to the unsuitable angle, and it will not be able to effectively clean the dead corners.
[0003] Existing brush heads have a fixed angle and cannot be flexibly adjusted according to the tilt angle of different gaps, making it difficult to penetrate deep into the gaps. In addition, the overall structure is mostly fixed and cannot be folded or the opening angle adjusted, taking up a lot of space when stored and making it inconvenient to carry.
[0004] To address this issue, the present invention provides a retractable cleaning brush for cleaning gaps in automotive chassis. Utility Model Content
[0005] To address the shortcomings of existing technologies, this invention provides a retractable automotive chassis gap cleaning brush, which solves the aforementioned problems.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a retractable car chassis gap cleaning brush, comprising a grip shell, a storage mechanism rotatably connected to the outer surface of the grip shell, an adjustment mechanism fixedly connected to the outer surface of the storage mechanism, the storage mechanism comprising a rotating block rotatably connected to the inner wall of the grip shell, and a threaded rod fixedly connected to the inner wall of the grip shell, a section of the threaded rod passing through the rotating block and the outer surface of the grip shell and threadedly connected to a nut, the adjustment mechanism comprising a connecting shell fixedly connected to the outer surface of the rotating block, a rotating plate rotatably connected to the outer surface of the connecting shell, a brush head fixedly connected to the outer surface of the rotating plate, and a rotating shaft fixedly connected to the outer surface of the rotating plate, the rotating shaft rotatably connected to the inner wall of the connecting shell, and a limiting sleeve fixedly connected to the outer surface of the rotating shaft, the inner wall of the limiting sleeve being slidably connected to a limiting block.
[0007] Furthermore, a spring is fixedly connected to the inner wall of the connecting housing, and a movable plate is fixedly connected to the other end of the spring. The movable plate is slidably connected to the inner wall of the connecting housing.
[0008] The above technical solution allows for easy repositioning of the moving plate using a spring.
[0009] Furthermore, the outer surface of the movable plate is fixedly connected to the outer surface of the limiting block, and a slider is fixedly connected to the outer surface of the movable plate.
[0010] By adopting the above technical solution, the moving plate drives the limiting block to move, so that the limiting block and the limiting sleeve are separated, which makes it easier to release the limitation on the rotating shaft, so that the rotating shaft and the rotating plate can rotate, and thus makes it easier to adjust the rotation angle of the rotating plate and the brush head.
[0011] Furthermore, the slider is slidably connected to the outer surface of the connecting housing, and the cross-section of the rotating shaft has a convex shape.
[0012] By adopting the above technical solution, the position of the moving plate can be easily adjusted by sliding the slider, and the rotating shaft adopts a convex structure to prevent the rotating shaft from detaching from the connecting shell.
[0013] Furthermore, the outer surface of the rotating block is provided with a through hole to match the threaded rod, and the outer surface of the threaded rod is fitted with a washer and a retaining spring, and a retaining ring is fixedly connected to the lower surface of the gripping housing.
[0014] By adopting the above technical solution, the threaded rod can pass through the through hole provided on the outer surface of the rotating block, so that the rotating block can rotate around the threaded rod as the central axis.
[0015] Furthermore, the outer surface of the nut is in contact with the outer surface of the retaining spring, the side of the retaining spring away from the nut is in contact with the outer surface of the washer, and the other side of the washer is in contact with the outer surface of the rotating block.
[0016] By adopting the above technical solution, by rotating the nut, the outer surface of the nut applies pressure to the outer surface of the snap ring, which in turn applies pressure to the outer surface of the washer, thereby increasing the friction between the washer, the rotating block and the inner wall of the gripping housing, preventing the rotating block from rotating during use, and facilitating the adjustment of the opening and closing angle of the rotating block and the gripping housing.
[0017] Beneficial effects
[0018] This invention provides a retractable cleaning brush for cleaning gaps in automotive chassis. Compared with existing technologies, it has the following advantages:
[0019] 1. This retractable car chassis gap cleaning brush, through the cooperation of sliders, moving plates, and limiting blocks, allows the sliding slider to release the limit on the rotating shaft, easily adjust the brush head angle to adapt to different gaps, and the spring can automatically reset and fix the angle. The convex rotating shaft prevents detachment, making it easy to operate and ensuring flexible and efficient cleaning.
[0020] 2. This retractable car chassis gap cleaning brush, through the cooperation of threaded rod, rotating block, nut, etc., can flexibly adjust the opening angle between the rotating block and the grip shell. Tightening the nut can enhance the friction and fix the angle to prevent rotation during use, while loosening it makes rotation adjustment easier. The through hole design allows the rotating block to rotate stably, and the retaining spring and washer enhance fixation and cushioning. The fixing ring makes it easy to hang, improving the convenience of use and storage. Attached Figure Description
[0021] 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 from these drawings without creative effort.
[0022] Figure 1 This is a perspective view of the external structure of this utility model;
[0023] Figure 2 This is a front sectional view of the structure of this utility model;
[0024] Figure 3 yes Figure 2 A magnified structural diagram of A in the middle;
[0025] Figure 4 This is a side sectional view of the structure of this utility model.
[0026] Figure 5 This is a top sectional view of the structure of this utility model.
[0027] In the diagram: 1. Holding shell; 2. Adjustment mechanism; 201. Brush head; 202. Connecting shell; 203. Rotating plate; 204. Rotating shaft; 205. Limiting block; 206. Limiting sleeve; 207. Moving plate; 208. Spring; 209. Slider; 3. Storage mechanism; 301. Threaded rod; 302. Rotating block; 303. Nut; 304. Snap ring; 305. Washer; 4. Fixing ring. Detailed Implementation
[0028] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0029] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.
[0030] Reference Figures 1 to 4 This application provides a retractable car chassis gap cleaning brush, including a grip shell 1. A storage mechanism 3 is rotatably connected to the outer surface of the grip shell 1. An adjustment mechanism 2 is fixedly connected to the outer surface of the storage mechanism 3. The storage mechanism 3 includes a rotating block 302 rotatably connected to the inner wall of the grip shell 1, and a threaded rod 301 is fixedly connected to the inner wall of the grip shell 1. A section of the threaded rod 301 passes through the rotating block 302 and is threadedly connected to the outer surface of the grip shell 1 with a nut 303. The adjustment mechanism 2 includes a connecting shell 202 fixedly connected to the outer surface of the rotating block 302. A rotating plate 203 is rotatably connected to the outer surface of the connecting shell 202. A brush head 201 is fixedly connected to the outer surface of the rotating plate 203, and a rotating shaft 204 is fixedly connected to the outer surface of the rotating plate 203. The rotating shaft 204 is rotatably connected to the inner wall of the connecting shell 202, and a limiting sleeve 206 is fixedly connected to the outer surface of the rotating shaft 204. A limiting block 205 is slidably connected to the inner wall of the limiting sleeve 206.
[0031] Furthermore, a spring 208 is fixedly connected to the inner wall of the connecting housing 202, and a movable plate 207 is fixedly connected to the other end of the spring 208. The movable plate 207 is slidably connected to the inner wall of the connecting housing 202. The outer surface of the movable plate 207 is fixedly connected to the outer surface of the limiting block 205, and a slider 209 is fixedly connected to the outer surface of the movable plate 207. The slider 209 is slidably connected to the outer surface of the connecting housing 202, and the cross-section of the rotating shaft 204 is a convex structure.
[0032] In this embodiment, with the help of slider 209, moving plate 207, limit block 205, etc., the sliding slider 209 can release the limit on the rotating shaft 204, easily adjust the angle of brush head 201 to adapt to different gaps, the spring 208 can automatically reset the fixed angle, and the convex rotating shaft 204 is prevented from detaching. The operation is simple and ensures flexible and efficient cleaning.
[0033] Reference Figures 1 to 4 In one aspect of this embodiment, the outer surface of the rotating block 302 is provided with a through hole for the threaded rod 301, and the outer surface of the threaded rod 301 is fitted with a washer 305 and a retaining spring 304, and a retaining ring 4 is fixedly connected to the lower surface of the holding housing 1.
[0034] Furthermore, the outer surface of the nut 303 is in contact with the outer surface of the snap ring 304, the side of the snap ring 304 away from the nut 303 is in contact with the outer surface of the washer 305, and the other side of the washer 305 is in contact with the outer surface of the rotating block 302.
[0035] In this embodiment, the opening and closing angle between the rotating block 302 and the gripping housing 1 can be flexibly adjusted by the cooperation of the threaded rod 301, the rotating block 302, and the nut 303. Tightening the nut 303 can enhance the friction fixing angle and prevent rotation during use, while loosening it makes rotation adjustment easier. The through hole design allows the rotating block 302 to rotate stably. The snap ring 304 and the washer 305 enhance fixation and buffering, and the fixing ring 4 facilitates hanging, improving the convenience of use and storage.
[0036] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0037] Working principle: The operator holds the outer casing 1 and can adjust the opening and closing state of the cleaning brush through the storage mechanism 3. When it is necessary to adjust the opening and closing angle between the rotating block 302 and the outer casing 1, the nut 303 is loosened. At this time, the pressure of the nut 303 on the retaining spring 304 is reduced, and the pressure of the retaining spring 304 on the washer 305 is also weakened. The friction between the rotating block 302 and the inner wall of the outer casing 1 and the washer 305 is reduced, and the rotating block 302 can rotate freely around the threaded rod 301 as the central axis, thereby changing the opening and closing angle. After the angle is determined, the nut 303 is tightened. The nut 303 squeezes the retaining spring 304, and the retaining spring 304 further squeezes the washer 305, so that the washer 305, the rotating block 302 and the inner wall of the outer casing 1 are tightly fitted, the friction is increased, and the rotating block 302 is prevented from rotating accidentally during use. Meanwhile, the retaining ring 304 and washer 305 on the outer surface of the threaded rod 301 serve to buffer and enhance the fixing effect. The fixing ring 4 on the lower surface of the holding housing 1 can be used to suspend or fix the cleaning brush. When it is necessary to adjust the angle of the brush head 201, the slider 209 on the outer surface of the connecting housing 202 is slidably connected. The slider 209 drives the movable plate 207 fixed to it to slide on the inner wall of the connecting housing 202. The movable plate 207 simultaneously drives the limiting block 205 to move, so that the limiting block 205 separates from the limiting sleeve 206, releasing the limitation on the rotating shaft 204. At this time, the rotating plate 203 can drive the rotating shaft 204 to rotate freely, thereby adjusting the angle of the brush head 201. Since the rotating shaft 204 adopts a convex structure, it can effectively prevent it from detaching from the connecting housing 202. After adjustment, release the slider 209. The spring 208 connected to the inner wall of the outer shell 202 will push the moving plate 207 to reset. The moving plate 207 will drive the limit block 205 to re-engage the limit sleeve 206, thereby limiting the rotating shaft 204 again and fixing the angle of the brush head 201.
[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0039] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A retractable automotive chassis gap cleaning brush, comprising a grip shell (1), characterized in that: The outer surface of the grip shell (1) is rotatably connected to a storage mechanism (3), and the outer surface of the storage mechanism (3) is fixedly connected to an adjustment mechanism (2). The storage mechanism (3) includes a rotating block (302) rotatably connected to the inner wall of the grip shell (1), and a threaded rod (301) is fixedly connected to the inner wall of the grip shell (1). A section of the threaded rod (301) passes through the rotating block (302) and the outer surface of the grip shell (1) and is threadedly connected to a nut (303). The adjustment mechanism (2) includes a connecting shell (202) fixedly connected to the outer surface of the rotating block (302), a rotating plate (203) rotatably connected to the outer surface of the connecting shell (202), a brush head (201) fixedly connected to the outer surface of the rotating plate (203), and a rotating shaft (204) fixedly connected to the outer surface of the rotating plate (203). The rotating shaft (204) is rotatably connected to the inner wall of the connecting shell (202), and a limiting sleeve (206) is fixedly connected to the outer surface of the rotating shaft (204). A limiting block (205) is slidably connected to the inner wall of the limiting sleeve (206).
2. The retractable automotive chassis gap cleaning brush according to claim 1, characterized in that: A spring (208) is fixedly connected to the inner wall of the connecting housing (202), and a movable plate (207) is fixedly connected to the other end of the spring (208). The movable plate (207) is slidably connected to the inner wall of the connecting housing (202).
3. A retractable automotive chassis gap cleaning brush according to claim 2, characterized in that: The outer surface of the movable plate (207) is fixedly connected to the outer surface of the limiting block (205), and a slider (209) is fixedly connected to the outer surface of the movable plate (207).
4. A retractable automotive chassis gap cleaning brush according to claim 3, characterized in that: The slider (209) is slidably connected to the outer surface of the connecting housing (202), and the cross-section of the rotating shaft (204) is a convex structure.
5. A retractable automotive chassis gap cleaning brush according to claim 1, characterized in that: The outer surface of the rotating block (302) is provided with a through hole in conjunction with the threaded rod (301), and the outer surface of the threaded rod (301) is fitted with a washer (305) and a retaining ring (304), and a retaining ring (4) is fixedly connected to the lower surface of the gripping shell (1).
6. A retractable automotive chassis gap cleaning brush according to claim 5, characterized in that: The outer surface of the nut (303) is in contact with the outer surface of the snap ring (304), the side of the snap ring (304) away from the nut (303) is in contact with the outer surface of the washer (305), and the other side of the washer (305) is in contact with the outer surface of the rotating block (302).