A waterproof gear box structure of a scrubber

Abstract

The utility model discloses a waterproof gear box structure of scrubber, including rolling brush, gear box subassembly, fan blade and metal bottom plate, gear box subassembly sets up in the rolling brush, gear box subassembly front end is provided with the second pivot, the fan blade is connected in the other end of second pivot, and gear box subassembly is through the fan blade and rolling brush transmission connection, and gear box subassembly rear end is connected with metal bottom plate, and gear box subassembly rear end is provided with rolling brush connecting subassembly, and gear box subassembly rear end and rolling brush are connected through rolling brush connecting subassembly, be provided with output waterproof structure between gear box subassembly front end and second pivot, be provided with tail waterproof structure at gear box subassembly rear end and metal bottom plate connecting place, be provided with gear box bottom waterproof structure between gear box subassembly rear end and rolling brush. It can effectively prevent the gear box to enter the water, thereby avoid the failure of scrubber due to water inlet short circuit, guarantee gear box transmission stability to prolong the life.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, and in particular to a waterproof gearbox structure for a floor scrubber. Background Technology

[0002] Gearboxes, as key drive components, are widely used in various electrical appliances, especially in equipment such as floor scrubbers, where they are the core component ensuring power output. Their design must simultaneously meet requirements for sealing, corrosion resistance, and long-term reliability. A conventional gearbox mainly consists of a metal casing, a motor, and a gear set. The motor and gear set are encapsulated together inside the metal casing, and the motor shaft is directly connected to the gear set, thus achieving efficient power transmission.

[0003] However, floor scrubbers need to operate in water or humid environments for extended periods, making them highly susceptible to water ingress. This can lead to short circuits, equipment failure, compromised transmission stability, and shortened lifespan. Therefore, there is an urgent need for a specially designed waterproof gearbox for floor scrubbers. This gearbox should retain the power transmission advantages of conventional gearboxes while incorporating a reinforced waterproof structure to effectively prevent water ingress and avoid short circuits. Simultaneously, it is crucial to ensure the stability of the gearbox transmission, extend its overall lifespan, and guarantee good sealing and durability even in humid environments.

[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 waterproof gearbox structure for a floor scrubber that can effectively prevent water from entering the gearbox.

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

[0007] A waterproof gearbox structure for a floor scrubber includes a roller brush, a gearbox assembly, fan blades, and a metal base plate. The gearbox assembly is disposed inside the roller brush. A second rotating shaft is provided at the front end of the gearbox assembly, and the fan blades are connected to the other end of the second rotating shaft. The gearbox assembly is drivenly connected to the roller brush through the fan blades. The rear end of the gearbox assembly is connected to the metal base plate. A roller brush connecting assembly is provided at the rear end of the gearbox assembly, and the rear end of the gearbox assembly and the roller brush are connected through the roller brush connecting assembly.

[0008] An output end waterproof structure is provided between the front end of the gearbox assembly and the second rotating shaft, a tail waterproof structure is provided at the connection between the rear end of the gearbox assembly and the metal base plate, and a gearbox bottom waterproof structure is provided between the rear end of the gearbox assembly and the roller brush.

[0009] In some embodiments, the gearbox assembly includes a metal housing, a motor, a gear set, a positive wiring harness, a negative wiring harness, and a first rotating shaft. The motor is disposed within the rear end of the metal housing, and the gear set is disposed within the front end of the metal housing. The gear set and the motor are connected via the first rotating shaft. A waterproof structure is provided on the side of the gearbox between the gear set and the metal housing. The positive and negative wiring harnesses are connected to the rear end of the motor. A wire outlet hole is provided on the metal base plate. One end of the positive and negative wiring harnesses is electrically connected to the motor, and the other end passes through the wire outlet hole and is connected to a power source.

[0010] In some embodiments, a motor base is provided at the bottom of the motor, and a tail bearing seat extending rearward is provided in the middle of the motor base. A lead wire hole is provided in the middle of the tail bearing seat. After the positive wire harness and the negative wire harness are led out from the lead wire hole, the lead wire hole is filled with potting compound to form the tail waterproof structure.

[0011] In some embodiments, a gearbox bottom waterproof structure is provided at the rear end of the motor base and in front of the roller brush connecting assembly. The gearbox bottom waterproof structure includes a support member and a rubber rear cover. The support member is sleeved on the outer periphery of the tail bearing seat, and the rubber rear cover is sleeved on the front end of the support member. The rubber rear cover, the metal shell, and the motor base are tightly fitted to form a sealed structure.

[0012] In some embodiments, the waterproof structure at the output end includes a rubber internal gear ring, an oil-impregnated copper bearing, an oil seal, a ball bearing, and a rubber sealing ring. The oil-impregnated copper bearing, the oil seal, the ball bearing, and the rubber sealing ring are sequentially fitted around the outer circumference of the second rotating shaft from back to front. The rear end of the rubber internal gear ring wraps around the outer circumference of the gear set, and the outer side of the front end of the rubber internal gear ring wraps around the inner side and top end of the metal shell. The inner side of the front end extends to the outer circumference of the second rotating shaft. The rubber internal gear ring encloses the oil-impregnated copper bearing, the oil seal, the ball bearing, and the rubber sealing ring.

[0013] In some embodiments, the gearbox side waterproof structure includes an O-ring, a sealing groove is provided on the outer periphery of the rubber internal gear ring, the O-ring is disposed on the sealing groove, and the O-ring is tightly fitted with the metal shell to form a sealing structure.

[0014] In some embodiments, a screw hole is recessed at the front end of the second shaft, a connecting hole is provided in the middle of the fan blade, a rubber ring is provided between the screw hole and the connecting hole to enhance the connection between the second shaft and the fan blade, a washer is provided at the front end of the connecting hole, and a screw passes through the washer in the connecting hole and connects to the screw hole.

[0015] In some embodiments, a plurality of corrugated rings are provided on the outer periphery of the rubber back cover, and the corrugated rings are tightly connected to the inner side of the metal shell.

[0016] In some embodiments, the rear end of the rubber back cover is provided with a connecting groove, and the upper end of the support member is provided with a support portion, which extends into the connecting groove to support the rubber back cover.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] The present invention proposes a waterproof gearbox structure for a floor scrubber, which can effectively prevent water from entering the gearbox, thereby avoiding failure of the floor scrubber due to short circuit caused by water ingress, ensuring the transmission stability of the gearbox and extending its service life. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the waterproof gearbox in the embodiment;

[0020] Figure 2 This is a cross-sectional view of the waterproof gearbox in the embodiment;

[0021] Figure 3 yes Figure 2 A magnified view of part A in the middle;

[0022] Figure 4 yes Figure 2 A magnified view of part B in the middle section;

[0023] Figure 5 This is a three-dimensional schematic diagram of the metal base plate in the embodiment;

[0024] Figure 6 This is a three-dimensional schematic diagram of the rubber back cover in the embodiment;

[0025] Figure 7 This is a three-dimensional schematic diagram of the support member in the embodiment;

[0026] Figure 8 This is a three-dimensional schematic diagram of the motor base in the embodiment.

[0027] In the diagram: 1. Roller brush; 2. Gearbox assembly; 21. Second shaft; 211. Screw hole; 22. Metal casing; 23. Motor; 24. Gear set; 25. Positive wiring harness; 26. Negative wiring harness; 27. First shaft; 28. Motor base; 281. Tail bearing housing; 282. Lead wire hole; 3. Fan blade; 31. Connecting hole; 32. Rubber ring; 33. Washer ring; 4. Metal base plate; 41. Cable outlet hole; 5. Roller brush 6. Connecting components; 6. Output end waterproof structure; 61. Rubber internal gear ring; 611. Sealing ring groove; 62. Oil-impregnated copper bearing; 63. Oil seal; 64. Ball bearing; 65. Rubber sealing ring; 7. Tail end waterproof structure; 8. Gearbox bottom waterproof structure; 81. Support component; 811. Support part; 82. Rubber rear cover; 821. Corrugated ring; 822. Connecting groove; 9. Gearbox side waterproof structure; 91. O-ring seal. Detailed Implementation

[0028] 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.

[0029] like Figures 1 to 8 As shown, this embodiment provides a waterproof gearbox structure for a floor scrubber, including a roller brush 1, a gearbox assembly 2, a fan blade 3, and a metal base plate 4. The gearbox assembly 2 is disposed inside the roller brush 1. A second rotating shaft 21 is provided at the front end of the gearbox assembly 2, and the fan blade 3 is connected to the other end of the second rotating shaft 21. The gearbox assembly 2 is connected to the roller brush 1 through the fan blade 3. The rear end of the gearbox assembly 2 is connected to the metal base plate 4. A roller brush connecting assembly 5 is provided at the rear end of the gearbox assembly 2, and the rear end of the gearbox assembly 2 and the roller brush 1 are connected through the roller brush connecting assembly 5.

[0030] An output end waterproof structure 6 is provided between the front end of the gearbox assembly 2 and the second rotating shaft 21, a tail waterproof structure 7 is provided at the connection between the rear end of the gearbox assembly 2 and the metal base plate 4, and a gearbox bottom waterproof structure 8 is provided between the rear end of the gearbox assembly 2 and the roller brush 1.

[0031] The present invention proposes a waterproof gearbox structure for a floor scrubber, which can effectively prevent water from entering the gearbox, thereby avoiding failure of the floor scrubber due to short circuit caused by water ingress, ensuring the transmission stability of the gearbox and extending its service life.

[0032] Furthermore, the gearbox assembly 2 includes a metal housing 22, a motor 23, a gear set 24, a positive wiring harness 25, a negative wiring harness 26, and a first rotating shaft 27. The motor 23 is located inside the rear end of the metal housing 22, and the gear set 24 is located inside the front end of the metal housing 22. The gear set 24 and the motor 23 are connected by transmission through the first rotating shaft 27. A gearbox side waterproof structure 9 is provided between the gear set 24 and the metal housing 22. The positive wiring harness 25 and the negative wiring harness 26 are connected to the rear end of the motor 23. A cable outlet hole 41 is provided on the metal base plate 4. One end of the positive wiring harness 25 and the negative wiring harness 26 is electrically connected to the motor 23, and the other end passes through the cable outlet hole 41 and is connected to the power source. The components of the gearbox assembly 2 are arranged reasonably, enabling the gearbox assembly 2 to be effectively connected to the roller brush 1 and the metal base plate 4.

[0033] Specifically, the motor 23 has a motor base 28 at its bottom, and a rear bearing seat 281 extending rearward is provided in the middle of the motor base 28. A lead wire hole 282 is provided in the middle of the rear bearing seat 281. After the positive terminal harness 25 and the negative terminal harness 26 are led out from the lead wire hole 282, the lead wire hole 282 is filled with potting compound to form the rear waterproof structure 7. The rear waterproof structure 7 prevents water from entering the middle position of the gearbox while it is connected to the power supply.

[0034] Furthermore, a gearbox bottom waterproof structure 8 is provided at the rear end of the motor base 28 and in front of the roller brush connecting assembly 5. The gearbox bottom waterproof structure 8 includes a support member 81 and a rubber rear cover 82. The support member 81 is fitted around the outer periphery of the tail bearing seat 281, and the rubber rear cover 82 is fitted around the front end of the support member 81. The rubber rear cover 82, the metal outer shell 22, and the motor base 28 fit tightly together to form a sealed structure. The gearbox bottom waterproof structure 8 allows the rubber rear cover 82, the motor base 28, and the metal outer shell 22 to form a sealed structure, preventing water from entering the circumferential edge of the gearbox bottom.

[0035] Furthermore, the output-end waterproof structure 6 includes a rubber internal gear ring 61, an oil-impregnated copper bearing 62, an oil seal 63, a ball bearing 64, and a rubber sealing ring 65. The oil-impregnated copper bearing 62, the oil seal 63, the ball bearing 64, and the rubber sealing ring 65 are sequentially fitted around the outer circumference of the second rotating shaft 21 from back to front. The rear end of the rubber internal gear ring 61 wraps around the outer circumference of the gear set 24, and the outer side of the front end of the rubber internal gear ring 61 wraps around the inner side and top of the metal housing 22. The inner side of the front end extends to the outer circumference of the second rotating shaft 21. The rubber internal gear ring 61 encloses the oil-impregnated copper bearing 62, the oil seal 63, the ball bearing 64, and the rubber sealing ring 65. The output-end waterproof structure 6, through the tight cooperation of the rubber sealing ring 65, the oil seal 63, and the rubber internal gear ring 61, forms a double waterproof structure, thus preventing water ingress due to the movement of the roller brush 1.

[0036] Furthermore, the gearbox side waterproof structure 9 includes an O-ring 91. A sealing groove 611 is provided on the outer periphery of the rubber internal gear ring 61, and the O-ring 91 is disposed on the sealing groove 611. The O-ring 91 and the metal shell 22 are tightly fitted to form a sealing structure, thereby making the front edge of the gearbox waterproof.

[0037] Furthermore, a screw hole 211 is recessed at the front end of the second rotating shaft 21, and a connecting hole 31 is provided in the middle of the fan blade 3. A rubber ring 32 is provided between the screw hole 211 and the connecting hole 31 to enhance the connection between the second rotating shaft 21 and the fan blade 3. A washer 33 is provided at the front end of the connecting hole 31, and a screw passes through the washer 33 and connects to the screw hole 211 within the connecting hole 31. This ensures a tight connection between the second rotating shaft 21 and the fan blade 3, allowing the power of the gearbox assembly 2 to be transmitted to the roller brush 1 as much as possible, thus enhancing the cleaning efficiency of the floor scrubber.

[0038] In particular, the outer periphery of the rubber back cover 82 is provided with a plurality of corrugated rings 821, which are tightly connected to the inner side of the metal outer shell 22. The corrugated rings 821 provide multiple waterproof functions.

[0039] Furthermore, a connecting groove 822 is provided at the rear end of the rubber back cover 82, and a supporting part 811 is provided at the upper end of the supporting member 81. The supporting part 811 extends into the connecting groove 822 to support the rubber back cover 82. The supporting part 811 provides support force to the rubber back cover 82, preventing the rubber back cover 82 from easily deforming and enhancing the durability of the waterproof structure 8 at the bottom of the gearbox.

[0040] 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 waterproof gearbox structure for a floor scrubber, characterized in that: The assembly includes a roller brush (1), a gearbox assembly (2), a fan blade (3), and a metal base plate (4). The gearbox assembly (2) is disposed inside the roller brush (1). A second rotating shaft (21) is provided at the front end of the gearbox assembly (2). The fan blade (3) is connected to the other end of the second rotating shaft (21). The gearbox assembly (2) is connected to the roller brush (1) through the fan blade (3). The rear end of the gearbox assembly (2) is connected to the metal base plate (4). A roller brush connecting assembly (5) is provided at the rear end of the gearbox assembly (2). The rear end of the gearbox assembly (2) and the roller brush (1) are connected through the roller brush connecting assembly (5). An output end waterproof structure (6) is provided between the front end of the gearbox assembly (2) and the second rotating shaft (21), a tail waterproof structure (7) is provided at the connection between the rear end of the gearbox assembly (2) and the metal base plate (4), and a gearbox bottom waterproof structure (8) is provided between the rear end of the gearbox assembly (2) and the roller brush (1).

2. The waterproof gearbox structure of a floor scrubber according to claim 1, characterized in that: The gearbox assembly (2) includes a metal housing (22), a motor (23), a gear set (24), a positive wire harness (25), a negative wire harness (26), and a first rotating shaft (27). The motor (23) is located inside the rear end of the metal housing (22), and the gear set (24) is located inside the front end of the metal housing (22). The gear set (24) and the motor (23) are connected by transmission through the first rotating shaft (27). A gearbox side waterproof structure (9) is provided between the gear set (24) and the metal housing (22). The positive wire harness (25) and the negative wire harness (26) are connected to the rear end of the motor (23). A wire outlet hole (41) is provided on the metal base plate (4). One end of the positive wire harness (25) and the negative wire harness (26) are electrically connected to the motor (23), and the other end passes through the wire outlet hole (41) and is connected to the power supply.

3. The waterproof gearbox structure of a floor scrubber according to claim 2, characterized in that: The motor (23) is provided with a motor base (28) at the bottom. The motor base (28) is provided with a rear bearing seat (281) extending to the rear side in the middle. A lead wire hole (282) is provided in the middle of the rear bearing seat (281). After the positive wire harness (25) and the negative wire harness (26) are led out from the lead wire hole (282), the lead wire hole (282) is filled with potting compound to form the rear waterproof structure (7).

4. The waterproof gearbox structure of a floor scrubber according to claim 3, characterized in that: A gearbox bottom waterproof structure (8) is provided at the rear end of the motor base (28) and the front side of the roller brush connecting assembly (5). The gearbox bottom waterproof structure (8) includes a support member (81) and a rubber back cover (82). The support member (81) is sleeved on the outer periphery of the tail bearing seat (281), and the rubber back cover (82) is sleeved on the front end of the support member (81). The rubber back cover (82), the metal shell (22), and the motor base (28) are tightly fitted to form a sealed structure.

5. A waterproof gearbox structure for a floor scrubber according to any one of claims 2, 3, or 4, characterized in that: The output end waterproof structure (6) includes a rubber internal gear ring (61), an oil-impregnated copper bearing (62), an oil seal (63), a ball bearing (64), and a rubber sealing ring (65). The oil-impregnated copper bearing (62), the oil seal (63), the ball bearing (64), and the rubber sealing ring (65) are sequentially fitted around the outer periphery of the second rotating shaft (21) from back to front. The rear end of the rubber internal gear ring (61) wraps around the outer periphery of the gear set (24), and the outer side of the front end of the rubber internal gear ring (61) wraps around the inner side and top end of the metal shell (22). The inner side of the front end extends to the outer periphery of the second rotating shaft (21). The rubber internal gear ring (61) encloses the oil-impregnated copper bearing (62), the oil seal (63), the ball bearing (64), and the rubber sealing ring (65).

6. The waterproof gearbox structure of a floor scrubber according to claim 5, characterized in that: The gearbox side waterproof structure (9) includes an O-ring (91). A sealing groove (611) is provided on the outer periphery of the rubber internal gear ring (61). The O-ring (91) is disposed on the sealing groove (611). The O-ring (91) and the metal shell (22) are tightly fitted to form a sealing structure.

7. The waterproof gearbox structure of a floor scrubber according to claim 6, characterized in that: The second rotating shaft (21) has a screw hole (211) recessed at the front end, and a connecting hole (31) is provided in the middle of the fan blade (3). A rubber ring (32) is provided between the screw hole (211) and the connecting hole (31) to enhance the connection between the second rotating shaft (21) and the fan blade (3). A washer (33) is provided at the front end of the connecting hole (31), and the screw passes through the washer (33) in the connecting hole (31) and connects with the screw hole (211).

8. The waterproof gearbox structure of a floor scrubber according to claim 4, characterized in that: The outer periphery of the rubber back cover (82) is provided with a plurality of wave rings (821), and the wave rings (821) are tightly connected to the inner side of the metal shell (22).

9. The waterproof gearbox structure of a floor scrubber according to claim 8, characterized in that: The rubber back cover (82) has a connecting groove (822) at its rear end, and the support member (81) has a support part (811) at its upper end. The support part (811) extends into the connecting groove (822) to support the rubber back cover (82).

Images