Gear box capable of rapidly and nondestructively disassembling driving wheel

Abstract

The utility model discloses a gear box capable of quickly and nondestructively disassembling a driving wheel, which comprises a shell and the driving wheel, a multi-stage gear transmission group is arranged in the shell, an output shaft is connected onto a last-stage gear of the multi-stage gear transmission group, one end of the output shaft extends out of the shell, one end of the output shaft extending out of the shell is provided with an external thread connecting end and an internal thread hole, and the other end of the output shaft extends out of the shell. A copper bushing is fixedly installed in the middle of the driving wheel, a threaded connecting hole is formed in the axial direction of the copper bushing, the external thread connecting end is in threaded connection with the threaded connecting hole, and a screw penetrates into the driving wheel from one side of the driving wheel and is in threaded connection with the internal thread hole. The connecting mode of the output shaft and the gear and the connecting mode of the output shaft and the driving wheel are changed, and the output shaft and the driving wheel can be rapidly disassembled and replaced in a lossless mode in the process of assembling the output shaft and the driving wheel. And when the rubber pad of the driving wheel is seriously worn after long-time use, the rubber pad can be quickly disassembled and replaced by a new rubber pad, so that the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to a gear box for a mopping robot, in particular to a gear box for quickly and non-destructively disassembling a driving wheel. Background Art

[0002] At present, smart mopping robots are widely used in various households. In order to meet the daily use of high-performance products, the requirements for mopping robots are getting higher and higher. The current plastic gearbox is mainly composed of a plastic shell, a motor, a shaft, a plastic gear pair, a drive wheel, a shell bolt, etc.; the last gear and the drive wheel of the plastic gearbox are tightly matched with the knurled surface of the output shaft, which makes it difficult to disassemble the drive wheel and replace the new rubber ring when the rubber pad of the drive wheel is severely worn. When the rubber pad of the drive wheel is severely worn, the entire mopping robot will not operate normally, and eventually the function of the entire mopping robot will fail. If the rubber pad is difficult to replace, the service life of the entire gearbox will be reduced, affecting the customer experience. Summary of the invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the utility model aims to provide a gear box for quickly and non-destructively disassembling a drive wheel.

[0004] The purpose of the utility model is achieved through the following technical solutions: a gear box for quickly and non-destructively disassembling a driving wheel, comprising a housing and a driving wheel, a multi-stage gear transmission group being arranged in the housing, an output shaft being connected to the last-stage gear of the multi-stage gear transmission group, one end of the output shaft extending from the housing, an end of the output shaft extending from the housing being provided with an externally threaded connection end and an internally threaded hole, a copper cup being fixedly installed in the middle of the driving wheel, a threaded connection hole being provided in the axial direction of the copper cup, the externally threaded connection end being screwed with the threaded connection hole, a screw being inserted from one side of the driving wheel and being screwed with the internally threaded hole.

[0005] As an improvement of the gearbox for quick and non-destructive disassembly of the driving wheel of the utility model, an elastic gasket is also included, and the elastic gasket is located between the head of the screw and the side of the driving wheel. The output shaft and the driving wheel are locked by an elastic gasket and an M3 screw, and the purpose is to prevent the output shaft and the driving wheel from loosening during the driving process, and the two become an elastic connection.

[0006] As an improvement to the gearbox for quick and non-destructive disassembly of the driving wheel of the utility model, the surface of the copper cup is provided with a first knurled surface, and the first knurled surface is interference fit with the middle mounting hole of the driven wheel.

[0007] As an improvement of the gearbox for quick and non-destructive disassembly of the driving wheel of the utility model, a second knurled surface is provided in the middle of the output shaft, and the second knurled surface is interference fit with the last stage gear of the multi-stage gear transmission group.

[0008] As an improvement of the gear box for quickly and non-destructively disassembling the driving wheel of the utility model, a rubber ring is sleeved on the driving wheel.

[0009] As an improvement of the gearbox for quick and non-destructive disassembly of the drive wheel of the utility model, the multi-stage gear transmission group includes a first-stage bevel gear, a second-stage gear group, a third-stage gear group, a fourth-stage gear group and a fifth-stage gear, the first-stage bevel gear and the second-stage gear group are meshed for transmission, the second-stage gear group and the third-stage gear group are meshed for transmission, the third-stage gear group and the fourth-stage gear group are meshed for transmission, the fourth-stage gear group and the fifth-stage gear are meshed for transmission, and the last-stage gear is the fifth-stage gear.

[0010] As an improvement of the gearbox for quick and non-destructive disassembly of the driving wheel of the utility model, the second-stage gear set includes a second bevel gear and a second spur gear, the second bevel gear and the second spur gear are coaxially arranged, and the second bevel gear is meshed with the first-stage bevel gear for transmission, the third-stage gear set includes a third input spur gear and a third output spur gear, the third input spur gear and the third output spur gear are coaxially arranged, and the third input spur gear is meshed with the second spur gear for transmission, the fourth-stage gear set includes a fourth input spur gear and a fourth output spur gear, the fourth input spur gear and the fourth output spur gear are coaxially arranged, the fourth input spur gear is meshed with the third output spur gear for transmission, and the fourth output spur gear is meshed with the fifth-stage gear for transmission.

[0011] As an improvement of the gearbox for quick and non-destructive disassembly of the driving wheel of the utility model, the first-stage helical gear is connected to the transmission shaft of the motor, a motor mounting sleeve is provided at one end of the housing, the motor is accommodated in the motor mounting sleeve, the transmission shaft of the motor extends into the housing and is connected to the first-stage helical gear.

[0012] As an improvement of the gearbox for quick and non-destructive disassembly of the driving wheel of the utility model, the housing comprises a bottom shell and an upper cover, the upper cover is fixed to the bottom shell by a plurality of screws, the upper cover is covered on the bottom shell to form a cavity, and the multi-stage gear transmission group is accommodated in the cavity.

[0013] The beneficial effects of the utility model are as follows: the utility model changes the connection mode of the output shaft with the gear and the driving wheel, and the utility model can be quickly disassembled and replaced without damage during the assembly of the output shaft and the driving wheel. When the rubber pad of the driving wheel is seriously worn after long-term use, it can be quickly disassembled and replaced with a new rubber pad, thereby reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 It is an exploded schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0017] The accompanying drawings are marked as follows: 1. housing, 2. driving wheel, 3. multi-stage gear transmission group, 4. output shaft, 5. copper cup, 6. screw, 7. elastic gasket, 8. motor, 9. motor mounting sleeve, 11. bottom shell, 12. upper cover, 21. rubber ring, 41. external threaded connection end, 42. second knurled surface, 51. threaded connection hole, 52. first knurled surface. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0020] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0021] like Figure 1-Figure 3As shown, a gearbox for rapid and non-destructive disassembly of a driving wheel comprises a housing 1 and a driving wheel 2. A multi-stage gear transmission group 3 is arranged in the housing 1. An output shaft 4 is connected to the last gear of the multi-stage gear transmission group 3. One end of the output shaft 4 extends out of the housing 1. The end of the output shaft 4 extending out of the housing 1 is provided with an external threaded connection end 41 and an internal threaded hole. A copper cup 5 is fixedly installed in the middle of the driving wheel 2. A threaded connection hole 51 is arranged in the axial direction of the copper cup 5. The external threaded connection end 41 is screwed with the threaded connection hole 51. A screw 6 is inserted from one side of the driving wheel 2 and screwed with the internal threaded hole. A rubber ring 21 is sleeved on the driving wheel 2.

[0022] Preferably, an elastic gasket 7 is further included, and the elastic gasket 7 is located between the head of the screw 6 and the side of the driving wheel 2. The output shaft and the driving wheel are locked by an elastic gasket 7 and an M3 screw, and the purpose is to prevent the output shaft and the driving wheel from loosening during the driving process, and the two become an elastic connection.

[0023] Preferably, the surface of the copper cup 5 is provided with a first knurled surface 52 , and the first knurled surface 52 is interference fit with the middle mounting hole of the driven wheel 2 .

[0024] Preferably, a second knurled surface 42 is provided in the middle of the output shaft 4 , and the second knurled surface 42 is interference fit with the last stage gear of the multi-stage gear transmission set 3 .

[0025] Preferably, the multi-stage gear transmission group 3 includes a first-stage bevel gear 31, a second-stage gear group 32, a third-stage gear group 33, a fourth-stage gear group 34 and a fifth-stage gear 35. The first-stage bevel gear 31 and the second-stage gear group 32 are meshed for transmission, the second-stage gear group 32 and the third-stage gear group 33 are meshed for transmission, the third-stage gear group 33 and the fourth-stage gear group 34 are meshed for transmission, the fourth-stage gear group 34 and the fifth-stage gear 35 are meshed for transmission, and the last-stage gear is the fifth-stage gear 35.

[0026] Preferably, the second-stage gear set 32 ​​includes a second bevel gear and a second spur gear, the second bevel gear and the second spur gear are coaxially arranged, and the second bevel gear is meshed with the first-stage bevel gear for transmission. The third-stage gear set 33 includes a third input spur gear and a third output spur gear, the third input spur gear and the third output spur gear are coaxially arranged, and the third input spur gear is meshed with the second spur gear for transmission. The fourth-stage gear set 34 includes a fourth input spur gear and a fourth output spur gear, the fourth input spur gear and the fourth output spur gear are coaxially arranged, the fourth input spur gear is meshed with the third output spur gear for transmission, and the fourth output spur gear is meshed with the fifth-stage gear for transmission.

[0027] Preferably, the first-stage bevel gear 31 is connected to the transmission shaft of the motor 8 , a motor mounting sleeve 9 is provided at one end of the housing 1 , the motor 8 is accommodated in the motor mounting sleeve 9 , the transmission shaft of the motor 8 extends into the housing 1 and is connected to the first-stage bevel gear 31 .

[0028] Preferably, the housing 1 comprises a bottom shell 11 and an upper cover 12, and the upper cover 12 is fixed to the bottom shell 11 by a plurality of screws. The upper cover 12 is covered on the bottom shell 11 to form a cavity, and the multi-stage gear transmission group 3 is accommodated in the cavity.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and structures of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gearbox for rapid and non-destructive disassembly of a driving wheel, comprising a housing and a driving wheel, characterized in that: A multi-stage gear transmission group is arranged in the shell, and an output shaft is connected to the last-stage gear of the multi-stage gear transmission group, one end of the output shaft extends out from the shell, and the end of the output shaft extending out of the shell is provided with an external threaded connection end and an internal threaded hole, a copper cup is fixedly installed in the middle of the driving wheel, and a threaded connection hole is arranged axially of the copper cup, the external threaded connection end is screwed with the threaded connection hole, and a screw is inserted from one side of the driving wheel and screwed with the internal threaded hole.

2. The gearbox for rapid and non-destructive disassembly of the driving wheel according to claim 1, characterized in that: An elastic washer is also included, and the elastic washer is located between the head of the screw and the side of the driving wheel.

3. The gearbox for rapid and non-destructive disassembly of the driving wheel according to claim 2, characterized in that: The surface of the copper cup is provided with a first knurled surface, and the first knurled surface is interference fit with the middle mounting hole of the driven wheel.

4. The gearbox for rapid and non-destructive disassembly of the driving wheel according to claim 2, characterized in that: A second knurled surface is provided at the middle portion of the output shaft, and the second knurled surface is interference fit with the last stage gear of the multi-stage gear transmission group.

5. The gearbox for rapid and non-destructive disassembly of the driving wheel according to claim 1, characterized in that: The driving wheel is sleeved with a rubber ring.

6. The gearbox for rapid and non-destructive disassembly of driving wheels according to claim 1, characterized in that: The multi-stage gear transmission group includes a first-stage bevel gear, a second-stage gear group, a third-stage gear group, a fourth-stage gear group and a fifth-stage gear. The first-stage bevel gear and the second-stage gear group are meshed for transmission, the second-stage gear group and the third-stage gear group are meshed for transmission, the third-stage gear group and the fourth-stage gear group are meshed for transmission, the fourth-stage gear group and the fifth-stage gear are meshed for transmission, and the last-stage gear is the fifth-stage gear.

7. The gearbox for rapid and non-destructive disassembly of the driving wheel according to claim 6, characterized in that: The second-stage gear set includes a second bevel gear and a second spur gear, which are coaxially arranged, and the second bevel gear is meshed with the first-stage bevel gear for transmission. The third-stage gear set includes a third input spur gear and a third output spur gear, which are coaxially arranged, and the third input spur gear is meshed with the second spur gear for transmission. The fourth-stage gear set includes a fourth input spur gear and a fourth output spur gear, which are coaxially arranged, and the fourth input spur gear is meshed with the third output spur gear for transmission. The fourth output spur gear is meshed with the fifth-stage gear for transmission.

8. The gearbox for rapid and non-destructive disassembly of driving wheels according to claim 6, characterized in that: The first-stage helical gear is connected to the transmission shaft of the motor. A motor mounting sleeve is provided at one end of the housing. The motor is accommodated in the motor mounting sleeve. The transmission shaft of the motor extends into the housing and is connected to the first-stage helical gear.

9. The gearbox for rapid and non-destructive disassembly of a driving wheel according to claim 1, characterized in that: The housing comprises a bottom shell and an upper cover, and the upper cover is fixed on the bottom shell by a plurality of screws.

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