Double-roller brush waterproof gear box structure

Abstract

The utility model discloses a double roll brush waterproof gear box structure, including gear box subassembly and metal bottom plate, gear box subassembly sets up on metal bottom plate, gear box subassembly includes shell, gear box, motor and waterproof subassembly, wherein gear box sets up in the front side of shell, motor sets up in the back of shell, and the rotating shaft of motor is connected with gear box transmission, waterproof subassembly includes front waterproof subassembly and rear waterproof part, front waterproof subassembly sets up in the shell, gear box front, rear waterproof part sets up in the shell, motor back, the same side both ends of metal bottom plate are provided with first gear box subassembly and second gear box subassembly respectively, the utility model provides a double roll brush waterproof gear box structure can be used in double roll brush equipment, prevents water seepage into the inside gear box, prolongs the service life of gear box.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, and in particular to a double-roller brush waterproof gearbox structure. Background Technology

[0002] Gearboxes are widely used as drive components in various electrical appliances. Existing gearboxes consist of a housing, a motor, and a gear set. The motor shaft connects to the gear set, and a rubber sealing ring is installed at the bottom of the housing for waterproofing. However, this design suffers from thermal expansion and contraction of the rubber sealing ring due to the heat generated by the motor and ambient temperature differences during gearbox operation. This causes gaps to appear on the sealing surface, allowing water to seep into the interior. Long-term water accumulation can lead to internal component failure and shorten the gearbox's lifespan.

[0003] In addition, the existing waterproof gearboxes have a single output end and are only compatible with single roller brush devices. They cannot provide synchronous power for dual roller brush devices, which is not conducive to the development of dual roller brush cleaning products.

[0004] Therefore, it is necessary to improve existing technologies. Utility Model Content

[0005] 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 double roller brush waterproof gearbox structure with better waterproof performance, which can be used in double roller brush equipment.

[0006] The above objective is achieved through the following technical solution:

[0007] A dual-roller brush waterproof gearbox structure includes a gearbox assembly and a metal base plate, wherein the gearbox assembly is disposed on the metal base plate;

[0008] The gearbox assembly includes a housing, a gearbox, a motor, and a waterproof component. The gearbox is located inside the front side of the housing, the motor is located inside the rear side of the housing, and the motor shaft is connected to the gearbox. The waterproof component includes a front waterproof component and a rear waterproof component. The front waterproof component is located inside the housing and in front of the gearbox, and the rear waterproof component is located inside the housing and behind the motor.

[0009] A mounting portion for connecting to the rear end of the housing is provided on the metal base plate. A positioning seat is provided at the bottom of the motor. A bearing is provided on the outside of the positioning seat. A bearing seat is provided on the outside of the bearing. The rear waterproof component is provided between the bearing seat and the mounting portion. The rear waterproof component is pressed between the rear end of the housing, the outer periphery of the bearing seat and the end of the mounting portion. The rear waterproof component is a rubber component.

[0010] In some embodiments, a rear gasket is provided in the middle of the outer peripheral wall of the rear waterproof component, and a plurality of annular sealing protrusions are provided on both sides of the rear gasket. The sealing protrusions are tightly attached to the inner wall of the end of the housing or the inner wall of the mounting part, and the rear gasket is pressed between the rear end of the housing and the mounting part.

[0011] In some embodiments, the rear waterproof component is provided with a first sealing lip and a second sealing lip near one end of the metal base plate and extending inward. The first sealing lip has an opening facing the direction of the motor, and the second sealing lip has an opening that extends radially outward. The first sealing lip and the second sealing lip form a double waterproof structure that seals the bottom of the gearbox assembly.

[0012] In some embodiments, the front waterproof assembly includes a connecting shaft located at the front side of the gearbox, the rear end of the connecting shaft being connected to the front end of the gearbox, and a bolt with internal threads formed at the front end of the connecting shaft. The front waterproof assembly also includes a screw, a front first sealing ring, and a front second sealing ring. The front first sealing ring is installed between the outer periphery of the bolt and the front end of the housing, and the front second sealing ring is installed at the front end of the front first sealing ring. A front washer is provided between the front second sealing ring and the screw, and the front first sealing ring and the bolt are interference-fitted.

[0013] In some embodiments, sealant is injected into the front end of the housing to seal the front end of the housing.

[0014] In some embodiments, a bus harness assembly is also included. The bus harness assembly includes a wire harness assembly and a terminal. A wire harness hole is provided in the middle of the metal base plate. Gearbox assemblies are respectively installed at both ends of the same side of the metal base plate. The two gearbox assemblies are a first gearbox assembly and a second gearbox assembly, respectively. A group of connecting holes is provided on the metal base plate between the bottom of the first gearbox assembly and the second gearbox assembly. A limiting groove is provided on the bottom of the metal base plate from the connecting hole group on both sides to the wire harness hole. A first wire harness assembly is provided on the first gearbox assembly, and a second wire harness assembly is provided on the second gearbox assembly. The first wire harness assembly and the second wire harness assembly pass through the metal base plate and extend along the limiting groove to the wire harness hole. The first wire harness assembly and the second wire harness assembly pass through the wire harness hole together and converge to form a bus harness assembly. The terminal is installed at the end of the bus harness assembly.

[0015] In some embodiments, the metal base plate is fixed to the gearbox assembly by screws, and the connection hole group is sealed by injecting sealant after the first wiring harness assembly and / or the second wiring harness are led out.

[0016] In some embodiments, the first wiring harness assembly includes a first positive wiring harness and a first negative wiring harness, one end of the first wiring harness assembly is electrically connected to the first gearbox assembly, and the other end merges into the bus wiring harness assembly and is connected to the terminal; the second wiring harness assembly includes a second positive wiring harness and a second negative wiring harness, one end of the second wiring harness assembly is electrically connected to the second gearbox assembly, and the other end merges into the bus wiring harness assembly and is connected to the terminal.

[0017] In some embodiments, the outer casing is made of plastic.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] The present invention proposes a double roller brush waterproof gearbox structure, which can be used in double roller brush equipment to prevent water from seeping into the gearbox and extend the service life of the gearbox. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the dual-roller brush waterproof gearbox structure in the embodiment;

[0021] Figure 2 This is a right view of the dual-roller brush waterproof gearbox structure in the embodiment;

[0022] Figure 3 This is a cross-sectional view of the dual-roller brush waterproof gearbox structure in the embodiment;

[0023] Figure 4 yes Figure 3 A magnified view of part A in the middle;

[0024] Figure 5 yes Figure 3 A magnified view of part B in the middle section;

[0025] Figure 6 This is an exploded view of the structure of the dual-roller brush waterproof gearbox in the embodiment;

[0026] Figure 7 This is a three-dimensional schematic diagram of the rear waterproof component in the embodiment;

[0027] Figure 8 This is a right view of the rear waterproof component in the embodiment;

[0028] Figure 9 This is a three-dimensional schematic diagram of the metal base plate in the embodiment.

[0029] In the diagram: 1. Gearbox assembly; 11. Housing; 12. Gearbox; 13. Motor; 131. Positioning seat; 2. Metal base plate; 21. Mounting part; 22. Wiring harness hole; 23. Connecting hole group; 24. Limiting groove; 3. Waterproof assembly; 31. Front waterproof assembly; 311. Connecting shaft; 3111. Bolt; 312. Screw; 313. Front first sealing ring; 314. Front second sealing ring; 315. Front washer; 32. Rear waterproof... Water component; 321, rear gasket; 322, sealing convex ring; 323, second sealing lip; 324, first sealing lip; 4, bearing; 5, bearing housing; 6, bus harness assembly; 61, harness assembly; 611, first harness assembly; 6111, first positive harness; 6112, first negative harness; 612, second harness assembly; 6121, second positive harness; 6122, second negative harness; 62, terminal; 7, screw. Detailed Implementation

[0030] 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.

[0031] like Figures 1 to 9 As shown, this embodiment provides a dual-roller brush waterproof gearbox structure, including a gearbox assembly 1 and a metal base plate 2, wherein the gearbox assembly 1 is disposed on the metal base plate 2;

[0032] The gearbox assembly 1 includes a housing 11, a gearbox 12, a motor 13, and a waterproof assembly 3. The gearbox 12 is located inside the front side of the housing 11, and the motor 13 is located inside the rear side of the housing 11, with the motor 13's shaft connected to the gearbox 12. The waterproof assembly 3 includes a front waterproof assembly 31 and a rear waterproof assembly 32. The front waterproof assembly 31 is located inside the housing 11, in front of the gearbox 12, and the rear waterproof assembly 32 is located inside the housing 11, behind the motor 13. The front and rear waterproof assemblies 31 and 32 provide a sealed protection for the gearbox 12 and motor 13, preventing water from penetrating into the gearbox 12.

[0033] A mounting portion 21 for connecting to the rear end of the housing 11 is provided on the metal base plate 2. A positioning seat 131 is provided at the bottom of the motor 13. A bearing 4 is provided on the outer side of the positioning seat 131, and a bearing seat 5 is provided on the outer side of the bearing 4. The rear waterproof component 32 is provided between the bearing seat 5 and the mounting portion 21. The rear waterproof component 32 is pressed between the rear end of the housing 11, the outer periphery of the bearing seat 5, and the end of the mounting portion 21. The rear waterproof component 32 is a rubber component. The provision of the rear waterproof component 32 enables double waterproofing of the bottom of the gearbox 12.

[0034] The present invention proposes a double roller brush waterproof gearbox structure, which can be used in double roller brush equipment to prevent water from seeping into the gearbox and extend the service life of the gearbox.

[0035] Specifically, a rear gasket 321 is provided in the middle of the outer peripheral wall of the rear waterproof component 32. Several annular sealing protrusions 322 are provided on both sides of the rear gasket 321, spaced apart. The sealing protrusions 322 are tightly attached to the inner wall of the end of the housing 11 or the inner wall of the mounting part 21. The rear gasket 321 is pressed between the rear end of the housing 11 and the mounting part 21. This unique mechanism of the rear waterproof component 32 provides multiple waterproofing functions. First, the rear gasket 321, pressed between the rear end of the housing 11 and the mounting part 21, fills the gap between them. Second, the variously shaped sealing protrusions 322 ensure that both sides of the rear gasket 321 fully fill the inner wall of the end of the housing 11 and the inner wall of the mounting part 21, forming a sealed waterproof structure on the side of the gearbox assembly 1.

[0036] Preferably, the rear waterproof component 32 is provided with a first sealing lip 324 and a second sealing lip 323 near one end of the metal base plate 2 and extending inward. The first sealing lip 324 has an opening facing the motor 13, and the second sealing lip 323 has an opening extending radially outward. The first sealing lip 324 and the second sealing lip 323 form a double waterproof structure sealing the bottom of the gearbox assembly 1. The provision of the first sealing lip 324 and the second sealing lip 323 not only forms a double waterproof structure at the bottom of the gearbox assembly 1, but also mitigates the damage to the rear waterproof component 32 caused by different air pressures due to different temperatures generated during and after use of the gearbox 12.

[0037] Furthermore, the front waterproof assembly 31 includes a connecting shaft 311 located at the front of the gearbox 12. The rear end of the connecting shaft 311 is connected to the front end of the gearbox 12. The front end of the connecting shaft 311 has an internally threaded bolt 3111. The front waterproof assembly 31 also includes a screw 312, a front first sealing ring 313, and a front second sealing ring 314. The front first sealing ring 313 is installed between the outer periphery of the bolt 3111 and the front end of the housing 11. The front second sealing ring 314 is installed at the front end of the front first sealing ring 313. A front washer 315 is provided between the front second sealing ring 314 and the screw 312. The front first sealing ring 313 and the bolt 311 are interference-fitted. This fills the gap between the housing 11 and the gearbox 12 without affecting the operation of the gearbox 12, preventing water from flowing into the gearbox assembly 1.

[0038] Specifically, sealant is injected into the front end of the housing 11 to seal the front end of the housing 11. After the screw 312 is connected to the bolt 311, the front end of the housing 11 is sealed by the sealant. This strengthens the sealing strength of the front end of the housing 11.

[0039] Furthermore, it also includes a bus harness assembly 6, which includes a wire harness assembly 61 and a terminal 62. A wire harness hole 22 is provided in the middle of the metal base plate 2. Gearbox assemblies 1 are respectively installed at both ends of the same side of the metal base plate 2. The two gearbox assemblies 1 are a first gearbox assembly (1A) and a second gearbox assembly (2A). A connection hole group 23 is provided on the metal base plate 2 at the bottom middle of the first gearbox assembly (1A) and the second gearbox assembly (2A). The bottom of the metal base plate 2 extends from the connection hole group 23 on both sides to the terminal 62. A limiting groove 24 is provided between the wire harness holes 22. A first wire harness assembly 611 is provided on the first gearbox assembly (1A), and a second wire harness assembly 612 is provided on the second gearbox assembly (2A). The first wire harness assembly 611 and the second wire harness assembly 612 pass through the metal base plate 2 and extend along the limiting groove 24 to the wire harness hole 22. The first wire harness assembly 611 and the second wire harness assembly 612 pass together through the wire harness hole 22 and converge to form a bus wire harness assembly 6. The terminal 62 is installed at the end of the bus wire harness assembly 6. The specific design of the bus wire harness assembly 6 and the metal base plate 2 realizes the connection of the double waterproof gearboxes. Manufacturers can install the double waterproof gearboxes onto the roller brush as needed to realize the production of double roller brush equipment.

[0040] Preferably, the metal base plate 2 is fixed to the gearbox assembly 1 by screws 7. After the first wiring harness assembly 611 and / or the second wiring harness 612 are led out, the connection hole group 23 is sealed by injecting sealant. Sealing the connection hole group 23 can further achieve the purpose of high sealing performance at the rear end of the gearbox assembly 1.

[0041] Furthermore, the first wiring harness assembly 611 includes a first positive wiring harness 6111 and a first negative wiring harness 6112. One end of the first wiring harness assembly 611 is electrically connected to the first gearbox assembly, and the other end merges into the main wiring harness assembly 6 and is connected to the terminal 62. The second wiring harness assembly 612 includes a second positive wiring harness 6121 and a second negative wiring harness 6122. One end of the second wiring harness assembly 612 is electrically connected to the second gearbox assembly, and the other end merges into the main wiring harness assembly 6 and is connected to the terminal 62. This enables electrical control of two gearbox assemblies 1 through a single terminal 62, reducing production costs for dual roller brush manufacturers.

[0042] Preferably, the housing 11 is made of plastic. This design reduces the production cost of the gearbox assembly 1 and the manufacturing difficulty of the housing 11.

[0043] 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 double-roller brush waterproof gearbox structure, characterized in that: It includes a gearbox assembly (1) and a metal base plate (2), wherein the gearbox assembly (1) is disposed on the metal base plate (2); The gearbox assembly (1) includes a housing (11), a gearbox (12), a motor (13), and a waterproof assembly (3). The gearbox (12) is located inside the front side of the housing (11), and the motor (13) is located inside the rear side of the housing (11). The shaft of the motor (13) is connected to the gearbox (12) in a transmission manner. The waterproof assembly (3) includes a front waterproof assembly (31) and a rear waterproof component (32). The front waterproof assembly (31) is located inside the housing (11) in front of the gearbox (12), and the rear waterproof component (32) is located inside the housing (11) behind the motor (13). A mounting part (21) for connecting to the rear end of the housing (11) is provided on the metal base plate (2). A positioning seat (131) is provided at the bottom of the motor (13). A bearing (4) is provided on the outside of the positioning seat (131). A bearing seat (5) is provided on the outside of the bearing (4). The rear waterproof component (32) is provided between the bearing seat (5) and the mounting part (21). The rear waterproof component (32) is pressed between the rear end of the housing (11), the outer periphery of the bearing seat (5) and the end of the mounting part (21). The rear waterproof component (32) is a rubber component.

2. The double-roller brush waterproof gearbox structure according to claim 1, characterized in that, A rear gasket (321) is provided in the middle of the outer peripheral wall of the rear waterproof component (32). Several ring-shaped sealing protrusions (322) are provided on both sides of the rear gasket (321) and are spaced apart. The sealing protrusions (322) are tightly attached to the inner wall of the end of the housing (11) or the inner wall of the mounting part (21). The rear gasket (321) is pressed between the rear end of the housing (11) and the mounting part (21).

3. The double-roller brush waterproof gearbox structure according to claim 2, characterized in that, The rear waterproof component (32) is located near one end of the metal base plate (2) and extends inwardly, and is provided with a first sealing lip (324) and a second sealing lip (323). The first sealing lip (324) has an opening facing the direction of the motor (13), and the second sealing lip (323) has an opening that extends radially outward. The first sealing lip (324) and the second sealing lip (323) form a double waterproof structure that seals the bottom of the gearbox assembly (1).

4. A double-roller brush waterproof gearbox structure according to claim 1, 2 or 3, characterized in that: The front waterproof assembly (31) includes a connecting shaft (311) located on the front side of the gearbox (12). The rear end of the connecting shaft (311) is connected to the front end of the gearbox (12). The front end of the connecting shaft (311) has a bolt (3111) with an internal thread. The front waterproof assembly (31) also includes a screw (312), a front first sealing ring (313), and a front second sealing ring (314). The front first sealing ring (313) is installed between the outer periphery of the bolt (3111) and the front end of the housing (11). The front second sealing ring (314) is installed at the front end of the front first sealing ring (313). A front washer (315) is provided between the front second sealing ring (314) and the screw (312). The front first sealing ring (313) and the bolt (3111) are interference-fitted.

5. The double-roller brush waterproof gearbox structure according to claim 4, characterized in that: Sealant is injected into the front end of the housing (11) to seal the front end of the housing (11).

6. A double-roller brush waterproof gearbox structure according to claim 1, 2 or 3, characterized in that, It also includes a bus harness assembly (6), which includes a wire harness assembly (61) and terminals (62). A wire harness hole (22) is provided in the middle of the metal base plate (2). Gearbox assemblies (1) are respectively installed at both ends of the same side of the metal base plate (2). The gearbox assemblies (1) on both sides are the first gearbox assembly and the second gearbox assembly, respectively. A group of connecting holes (23) is provided on the metal base plate (2) in the middle of the bottom of the first gearbox assembly and the second gearbox assembly. The bottom of the metal base plate (2) extends from the group of connecting holes (23) on both sides to the wire harness hole (22). A limiting groove (24) is provided between the two gearboxes. A first wire harness assembly (611) is provided on the first gearbox assembly, and a second wire harness assembly (612) is provided on the second gearbox assembly. The first wire harness assembly (611) and the second wire harness assembly (612) pass through the metal base plate (2) and extend along the limiting groove (24) to the wire harness hole (22). The first wire harness assembly (611) and the second wire harness assembly (612) pass through the wire harness hole (22) together and are then combined to form a bus harness assembly (6). The terminal (62) is installed at the end of the bus harness assembly (6).

7. The double-roller brush waterproof gearbox structure according to claim 6, characterized in that, The metal base plate (2) is fixed to the gearbox assembly (1) by screws (7). After the first wire harness assembly (611) and / or the second wire harness assembly (612) are led out, the connection hole group (23) is sealed by injecting sealant.

8. The double-roller brush waterproof gearbox structure according to claim 6, characterized in that: The first wiring harness assembly (611) includes a first positive wiring harness (6111) and a first negative wiring harness (6112). One end of the first wiring harness assembly (611) is electrically connected to the first gearbox assembly, and the other end is connected to the terminal (62) after entering the bus wiring harness assembly (6). The second wiring harness assembly (612) includes a second positive wiring harness (6121) and a second negative wiring harness (6122). One end of the second wiring harness assembly (612) is electrically connected to the second gearbox assembly, and the other end is connected to the terminal (62) after entering the bus wiring harness assembly (6).

9. A double-roller brush waterproof gearbox structure according to claim 1, 2 or 3, characterized in that, The outer shell (11) is made of plastic.

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