Multiple hair foreign object entanglement structure for a gear box

Abstract

The utility model discloses a multiple hair foreign matter entanglement structure of gear box, including rolling brush, gear box subassembly, bottom plate and prevent entanglement structure, gear box subassembly sets up in rolling brush, gear box subassembly's front end with rolling brush's front end drive connection is together, gear box subassembly rear end is connected with bottom plate, prevent entanglement structure sets up in rolling brush rear end, prevent entanglement structure includes first prevent entanglement structure, second prevent entanglement structure and third prevent entanglement structure, first prevent entanglement structure sets up in bottom plate rear end, second prevent entanglement structure sets up in bottom plate front end with rolling brush rear end's junction, third prevent entanglement structure sets up between gear box subassembly with bottom plate, it can multiple ways barrier hair and foreign matter enter gear box inside, not only convenient for user cleaning, reduce maintenance cost, still guarantee the stability of power transmission, prolong the life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, and in particular to a multi-layer anti-hair and foreign object entanglement structure for gearboxes. Background Technology

[0002] Gearboxes have become standard components in various household and commercial electronic devices, such as robotic vacuum cleaners, floor scrubbers, and commercial cleaning equipment. They ensure the operating efficiency of the equipment by precisely driving the rotation of the roller brush. However, the intrusion of hair and foreign objects in usage scenarios remains a core pain point, seriously affecting the performance and lifespan of electronic devices.

[0003] In home environments, everyday human hair, pet shed fur during shedding season, and mud from shoes easily adhere to the floor or carpet crevices. In commercial spaces or factory workshops, fiber debris from textile mills and fine dust particles from machining operations are ubiquitous. These foreign objects can be drawn into the gearbox by the suction force generated by the high-speed rotation of the roller brush. Without effective protection, they can penetrate into core transmission components. The damage is cascading: firstly, they can entangle the motor shaft, gear meshing points, and bearings, forming a resistance layer that drastically reduces power transmission efficiency, slows down the roller brush rotation, and severely affects the operation of electronic equipment. Secondly, they can easily cause component jamming, accelerate gear wear, damage bearing lubrication, and potentially cause motor overload, leading to anything from overheating and shutdown to motor burnout and casing cracking, significantly shortening equipment lifespan and increasing maintenance costs.

[0004] Some existing gearboxes feature designs that primarily prevent hair and foreign object entanglement. However, these often rely on simple sheet metal covers, which are insufficient to block fine fibers. Some designs incorporate a tapered, narrowing structure at the gearbox neck, but this can easily allow hair to become increasingly entangled, preventing it from falling off on its own. Manual cleaning often requires disassembling the entire gearbox, leading to high labor costs. This design not only fails to solve the problem of hair and foreign object intrusion but may also cause the gearbox to jam due to entangled hair and foreign objects, potentially leading to motor burnout and failing to extend the overall lifespan of the gearbox.

[0005] Therefore, it is necessary to improve existing technologies. Utility Model Content

[0006] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, one objective of the present invention is to propose a multi-layer anti-hair and foreign object entanglement structure for a gearbox, which can block hair and foreign objects from entering the gearbox through multiple pathways.

[0007] The above objective is achieved through the following technical solution:

[0008] A multi-layer anti-hair and foreign object entanglement structure for a gearbox includes a roller brush, a gearbox assembly, a base plate, and an anti-entanglement structure. The gearbox assembly is disposed inside the roller brush, with its front end connected to the front end of the roller brush, its rear end connected to the base plate, and the anti-entanglement structure disposed at the rear end of the roller brush.

[0009] The anti-entanglement structure includes a first anti-entanglement structure, a second anti-entanglement structure, and a third anti-entanglement structure. The first anti-entanglement structure is disposed at the rear end of the base plate, the second anti-entanglement structure is disposed at the connection between the front end of the base plate and the rear end of the roller brush, and the third anti-entanglement structure is disposed between the gearbox assembly and the base plate.

[0010] In some embodiments, a connecting portion is provided on the base plate. The connecting portion is cylindrical and detachably connected to the roller brush. The connecting portion includes a first snap-fit ​​portion, the outer periphery of which is connected to the roller brush. A first anti-entanglement structure is provided at the rear end of the first snap-fit ​​portion. The first anti-entanglement structure includes a first inclined surface formed by tilting from the outer peripheral wall towards the center.

[0011] In some embodiments, a second snap-fit ​​portion is provided on the front side of the first snap-fit ​​portion and on the connecting portion. The second snap-fit ​​portion has a second inclined surface that is inclined from the outer peripheral wall toward the center in the direction of the first snap-fit ​​portion. The second inclined surface and the front side of the first snap-fit ​​portion form a second anti-entanglement structure. The second anti-entanglement structure is a groove.

[0012] In some embodiments, the third anti-entanglement structure includes a base plate connector and a pin, a gearbox tailstock is provided at the rear end of the gearbox assembly, and the front end of the base plate connector is connected to the gearbox tailstock.

[0013] A cable outlet is provided in the middle of the connecting part, and a protruding limiting part is provided extending forward from the cable outlet. Pin holes are provided on both sides of the limiting part. Pin mounting parts are provided on both sides of the rear end of the base plate connector. The pin mounting parts on both sides are located outside the pin holes on both sides. The pin connects the pin holes and the pin mounting parts together.

[0014] In some embodiments, one end of the pin is provided with a pin seat, and the other end is provided with a snap ring groove, on which a snap ring is installed.

[0015] In some embodiments, a roller brush connecting assembly is provided on the outer periphery of the gearbox tailstock, the roller brush connecting assembly connecting the gearbox tailstock and the roller brush together.

[0016] In some embodiments, the roller brush connecting assembly includes a bearing, a roller brush connector, and a rubber washer. The bearing is sleeved on the outer periphery of the gearbox tailstock, the roller brush connector is disposed between the bearing and the roller brush, and the rubber washer is sleeved on the outer periphery of the roller brush connector to realize the connection between the roller brush and the roller brush connecting assembly.

[0017] In some embodiments, the gearbox assembly includes a terminal harness that passes sequentially through the gearbox tailstock and the base plate connector before being connected to an external power source via the outlet.

[0018] In some embodiments, the roller brush consists of a roller and spiral patterns, with a plurality of the spiral patterns evenly distributed on the outer periphery of the roller.

[0019] In some embodiments, the base plate is made of metal.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] This invention proposes a multi-layered anti-hair and foreign object entanglement structure for a gearbox, comprising at least three anti-entanglement structures to form a composite protective structure. Through the different structural arrangements, it effectively prevents hair and foreign objects from entering and entangled within the gearbox's internal structure, facilitating user cleaning and reducing maintenance costs; it also ensures the stability of power transmission and extends the equipment's lifespan. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram (1) of the gearbox in the embodiment;

[0023] Figure 2 This is a three-dimensional schematic diagram (2) of the gearbox in the embodiment;

[0024] Figure 3 This is an exploded view of the gearbox structure in the embodiment;

[0025] Figure 4 This is a partial cross-sectional view (top view) of the gearbox in the embodiment;

[0026] Figure 5 This is a three-dimensional schematic diagram of the base plate connector in the embodiment;

[0027] Figure 6 This is a three-dimensional schematic diagram of the base plate in the embodiment;

[0028] Figure 7 This is a three-dimensional schematic diagram of the connection between the base plate connector and the base plate in the embodiment;

[0029] Figure 8 This is a three-dimensional schematic diagram of the pin in the embodiment.

[0030] In the diagram: 1. Roller brush; 11. Roller; 12. Spiral pattern; 2. Gearbox assembly; 21. Terminal harness; 3. Base plate; 31. Connecting part; 311. First snap-fit ​​part; 312. Second snap-fit ​​part; 3121. Second inclined surface; 313. Cable outlet; 314. Limiting part; 3141. Pin hole; 4. Anti-entanglement structure; 41. First anti-entanglement structure; 42. Second anti-entanglement structure; 43. Third anti-entanglement structure; 431. Base plate connector; 4311. Pin mounting part; 432. Pin; 4321. Pin seat; 4322. Snap ring groove; 5. Gearbox tailstock; 6. Snap ring; 7. Roller brush connecting assembly; 71. Bearing; 72. Roller brush connector; 73. Rubber washer. Detailed Implementation

[0031] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0032] like Figures 1 to 8 As shown, this embodiment provides a multi-layer anti-hair and foreign object entanglement structure for a gearbox, including a roller brush 1, a gearbox assembly 2, a base plate 3, and an anti-entanglement structure 4. The gearbox assembly 2 is disposed inside the roller brush 1, and the front end of the gearbox assembly 2 is connected to the front end of the roller brush 1. The rear end of the gearbox assembly 2 is connected to the base plate 3, and the anti-entanglement structure 4 is disposed at the rear end of the roller brush 1.

[0033] The anti-entanglement structure 4 includes a first anti-entanglement structure 41, a second anti-entanglement structure 42, and a third anti-entanglement structure 43. The first anti-entanglement structure 41 is disposed at the rear end of the base plate 3, the second anti-entanglement structure 42 is disposed at the connection between the front end of the base plate 3 and the rear end of the roller brush 1, and the third anti-entanglement structure 43 is disposed between the gearbox assembly 2 and the base plate 3.

[0034] This invention proposes a multi-layered anti-hair and foreign object entanglement structure for a gearbox, comprising at least three anti-entanglement structures. This forms a composite protective structure, effectively preventing hair and foreign objects from entering and becoming entangled within the gearbox's internal structure through different structural configurations. This not only facilitates cleaning and reduces maintenance costs for users but also ensures stable power transmission and extends the equipment's lifespan.

[0035] Specifically, a connecting part 31 is provided on the base plate 3. The connecting part 31 is cylindrical and detachably connected to the roller brush 1. The connecting part 31 includes a first snap-fit ​​part 311, the outer periphery of which is connected to the roller brush 1. A first anti-entanglement structure 41 is provided at the rear end of the first snap-fit ​​part 311. The first anti-entanglement structure 41 includes a first inclined surface formed from the outer peripheral wall towards the center. The first anti-entanglement structure 41, at the connection between the roller brush 1 and the base plate 3, and the first inclined surface, guide the hair and foreign objects entangled on the roller brush 1 to fall off along the base plate 3, preventing the hair and foreign objects entangled on the roller brush 1 from entering the gearbox.

[0036] Furthermore, a second engaging portion 312 is provided on the front side of the first engaging portion 311 and on the connecting portion 31. The second engaging portion 312 has a second inclined surface 3121 that slopes from the outer peripheral wall towards the center towards the first engaging portion 311. The second inclined surface 3121 and the front side of the first engaging portion 311 form a second anti-entanglement structure 42, which is groove-shaped. The second anti-entanglement structure 42 is groove-shaped, forming a groove structure for collecting hair and foreign objects. When a small amount of hair and foreign objects cannot be filtered out by the first anti-entanglement structure 41 and begin to enter the inside of the roller brush 1, the second anti-entanglement structure 42 will block and collect them.

[0037] Furthermore, the third anti-entanglement structure 43 includes a base plate connector 431 and a pin 432. A gearbox tailstock 5 is provided at the rear end of the gearbox assembly 2, and the front end of the base plate connector 431 is connected to the gearbox tailstock 5.

[0038] A cable outlet 313 is provided in the middle of the connecting part 31, and a protruding limiting part 314 extends forward from the cable outlet 313. Pin holes 3141 are provided on both sides of the limiting part 314. Pin mounting parts 4311 are provided on both sides of the rear end of the base plate connector 431. The pin mounting parts 4311 on both sides are located outside the pin holes 3141 on both sides. The pin 432 connects the pin holes 3141 and the pin mounting parts 4311 together. The arrangement of the pin 432, pin holes 3141, and pin mounting parts 4311 allows the base plate connector 431 to fold relative to the base plate 3, facilitating the user's disassembly of the roller brush 1. The user can then easily remove hair and foreign objects entangled in the second anti-entanglement structure 42. After using the electronic device, the user only needs to disassemble the roller brush 1 to clean the hair and foreign objects collected in the second anti-entanglement structure 42. Then, the roller brush 1 can be reinstalled in its original position.

[0039] Preferably, one end of the pin 432 is provided with a pin seat 4321, and the other end is provided with a retaining ring groove 4322, on which a retaining ring 6 is installed. The retaining ring 6 restricts the axial movement of the pin 432 and serves to position the pin 432 on the pin mounting part 4311.

[0040] Furthermore, a roller brush connecting assembly 7 is provided on the outer periphery of the gearbox tailstock 5, which connects the gearbox tailstock 5 and the roller brush 1 together. The roller brush connecting assembly 7 enables the connection between the rear end of the roller brush 1 and the gearbox assembly 2.

[0041] Specifically, the roller brush connecting assembly 7 includes a bearing 71, a roller brush connector 72, and a rubber washer 73. The bearing 71 is sleeved on the outer periphery of the gearbox tailstock 5. The roller brush connector 72 is disposed between the bearing 71 and the roller brush 1. The rubber washer 73 is sleeved on the outer periphery of the roller brush connector 72 to achieve the connection between the roller brush 1 and the roller brush connecting assembly 7. The mutual cooperation of the bearing 71, the roller brush connector 72, and the rubber washer 73 ensures a tight connection between the roller brush 1 and the roller brush connecting assembly 7, and the front and rear ends of the roller brush 1 and the gearbox assembly 2 can be well connected together.

[0042] Furthermore, the gearbox assembly 2 includes a terminal harness 21, which passes sequentially through the gearbox tailstock 5 and the base plate connector 431 before connecting to an external power source via the outlet 313. This ensures that the terminal harness 21 is securely installed inside the gearbox and guarantees a stable power supply to the gearbox.

[0043] Furthermore, the roller brush 1 consists of a roller 11 and spiral patterns 12, with a plurality of spiral patterns 12 evenly distributed on the outer periphery of the roller 11. The roller brush 1, with its evenly distributed spiral patterns 12 on the roller 11, generates a directional spiral airflow and mechanical scraping force when the roller brush 1 rotates. In addition, the manufacturer can adjust the depth and density of the spiral patterns 12 as needed to adapt to different application scenarios.

[0044] Preferably, the base plate 3 is made of metal. The metal material makes the base plate 3 more structurally sound.

[0045] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A multi-layered anti-hair and foreign object entanglement structure for a gearbox, characterized in that: The device includes a roller brush (1), a gearbox assembly (2), a base plate (3), and an anti-entanglement structure (4). The gearbox assembly (2) is disposed inside the roller brush (1). The front end of the gearbox assembly (2) is connected to the front end of the roller brush (1) in a driving connection. The rear end of the gearbox assembly (2) is connected to the base plate (3). The anti-entanglement structure (4) is disposed at the rear end of the roller brush (1). The anti-entanglement structure (4) includes a first anti-entanglement structure (41), a second anti-entanglement structure (42), and a third anti-entanglement structure (43). The first anti-entanglement structure (41) is disposed at the rear end of the base plate (3), the second anti-entanglement structure (42) is disposed at the connection between the front end of the base plate (3) and the rear end of the roller brush (1), and the third anti-entanglement structure (43) is disposed between the gearbox assembly (2) and the base plate (3).

2. The multi-layer anti-hair and foreign object entanglement structure for a gearbox according to claim 1, characterized in that: A connecting part (31) is provided on the base plate (3). The connecting part (31) is cylindrical and detachably connected to the roller brush (1). The connecting part (31) includes a first snap-fit ​​part (311). The outer periphery of the first snap-fit ​​part (311) is connected to the roller brush (1). A first anti-entanglement structure (41) is provided at the rear end of the first snap-fit ​​part (311). The first anti-entanglement structure (41) includes a first inclined surface formed by tilting from the outer peripheral wall towards the center.

3. The multi-layer anti-hair and foreign object entanglement structure for a gearbox according to claim 2, characterized in that: A second snap-fit ​​portion (312) is provided on the front side of the first snap-fit ​​portion (311) and on the connecting portion (31). The second snap-fit ​​portion (312) has a second inclined surface (3121) that is inclined from the outer peripheral wall to the center in the direction of the first snap-fit ​​portion (311). The second inclined surface (3121) and the front side of the first snap-fit ​​portion (311) form a second anti-entanglement structure (42). The second anti-entanglement structure (42) is a groove.

4. The multi-layer anti-hair and foreign object entanglement structure for a gearbox according to claim 3, characterized in that: The third anti-entanglement structure (43) includes a base plate connector (431) and a pin (432). A gearbox tailstock (5) is provided at the rear end of the gearbox assembly (2). The front end of the base plate connector (431) is connected to the gearbox tailstock (5). A cable outlet (313) is provided in the middle of the connecting part (31), and a protruding limiting part (314) is provided extending forward from the cable outlet (313). Pin holes (3141) are provided on both sides of the limiting part (314). Pin mounting parts (4311) are provided on both sides of the rear end of the bottom plate connector (431). The pin mounting parts (4311) on both sides are located outside the pin holes (3141) on both sides. The pin (432) connects the pin holes (3141) and the pin mounting parts (4311) together.

5. The multi-layer anti-hair and foreign object entanglement structure for a gearbox according to claim 4, characterized in that: One end of the pin (432) is provided with a pin seat (4321), and the other end is provided with a snap ring groove (4322), on which a snap ring (6) is installed.

6. The multi-layer anti-hair and foreign object entanglement structure for a gearbox according to claim 4, characterized in that: A roller brush connecting assembly (7) is provided on the outer periphery of the gearbox tailstock (5), and the roller brush connecting assembly (7) connects the gearbox tailstock (5) and the roller brush (1) together.

7. The multi-layer anti-hair and foreign object entanglement structure for a gearbox according to claim 6, characterized in that: The roller brush connecting assembly (7) includes a bearing (71), a roller brush connector (72), and a rubber washer (73). The bearing (71) is sleeved on the outer periphery of the gearbox tailstock (5). The roller brush connector (72) is provided between the bearing (71) and the roller brush (1). The rubber washer (73) is sleeved on the outer periphery of the roller brush connector (72) to realize the connection between the roller brush (1) and the roller brush connecting assembly (7).

8. The multi-layer anti-hair and foreign object entanglement structure for a gearbox according to claim 6, characterized in that: The gearbox assembly (2) includes a terminal harness (21), which passes through the gearbox tailstock (5) and the base plate connector (431) in sequence and is connected to an external power source through the outlet (313).

9. A multi-layer anti-hair and foreign object entanglement structure for a gearbox according to any one of claims 1-8, characterized in that: The roller brush (1) consists of a roller (11) and spiral patterns (12), with several spiral patterns (12) evenly distributed on the outer periphery of the roller (11).

10. A multi-layer anti-hair and foreign object entanglement structure for a gearbox according to any one of claims 1-8, characterized in that: The base plate (3) is made of metal.

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