Outboard motor transmission system

Abstract

The utility model discloses an outboard motor transmission system, including box and propeller, install transmission part for driving propeller rotation in the box, and transmission part includes: driving shaft and driven shaft, and the vertical and each other intercommunication of longitudinal cavity and horizontal cavity of being provided with in the box inside, driving shaft and driven shaft are installed in the longitudinal cavity and horizontal cavity of box respectively, and two verticals, and driven shaft is used for driving propeller rotation, connecting piece, install between driving shaft and driven shaft, for kinetic energy transmission. Compared with prior art, the utility model has the advantages that the box only horizontal cavity both ends and the outside world intercommunication can make the box adopt metal or plastic integrated molding, reduce the risk of water body penetration as far as possible, and the transmission part can be detachably arranged, the end cover is taken off, the internal driven shaft and connecting piece can be taken off, the propeller can be taken off through the sleeve of driving shaft end, and when maintaining, only need to operate the two end portions of horizontal cavity, can comprehensively check or replace the internal transmission component.

Description

Technical Field

[0001] This utility model relates to the field of outboard motor technology, and in particular to outboard motor transmission systems. Background Technology

[0002] The main function of an outboard motor is to generate power by burning fuel in an engine or consuming electrical energy in an electric motor, which drives the propeller to rotate in the water and generates a thrusting force to propel the hull forward.

[0003] In the patent with publication number CN205239876U and titled "Electric Outboard Motor", the figure shows that the input shaft and output shaft are driven by bevel gears. However, the transmission parts between the input shaft and output shaft and the propeller are submerged in water for a long time. During the start-up and operation of the outboard motor, certain vibrations are often generated. At the same time, the propeller needs to rotate in the water. During this process, when the service life reaches a certain point, water leakage is likely to occur, causing water to leak into the transmission parts in the gearbox, making the transmission parts more susceptible to corrosion, wear, and jamming. Furthermore, when water seeps into the gearbox, it is often difficult to detect, and even if the amount of water is small, it can emulsify the lubricating oil inside the gearbox, causing it to form a milky white paste, which greatly reduces its lubrication performance. Based on this, improvements are proposed for the outboard motor transmission components. Utility Model Content

[0004] In view of the problems mentioned above, the technical problem to be solved by this utility model is to provide an outboard motor transmission system.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an outboard motor transmission system, including a housing and a propeller, wherein a transmission part for driving the propeller to rotate is installed inside the housing, and the transmission part includes: The drive shaft and driven shaft are respectively installed in the longitudinal and transverse cavities of the housing, which are vertically connected. The driven shaft and driven shaft are respectively installed in the longitudinal and transverse cavities of the housing, and the two are perpendicular to each other. The driven shaft is used to drive the propeller to rotate. A connecting component, installed between the drive shaft and the driven shaft, is used for kinetic energy transmission; The drive shaft end is fixed to the propeller and extends inward from one end of the transverse cavity to mate with one end of the driven shaft. The end cap is used to seal the other end of the transverse cavity, and the end cap abuts against the other end of the driven shaft.

[0006] A further preferred embodiment of this utility model is: the housing is further provided with an installation cavity located at the lower end of the longitudinal cavity, and the connecting parts include a bevel gear one that cooperates with the drive shaft and a bevel gear two that cooperates with the driven shaft. The bevel gear one and the bevel gear two mesh with each other, and the bevel gear one is located in the installation cavity.

[0007] A further preferred embodiment of this utility model is that the outer side of the bevel gear contacts the inner wall of the mounting cavity to prevent the bevel gear from shaking.

[0008] A further preferred embodiment of this utility model is: the lower end of the drive shaft is provided with an upwardly extending inlay groove, and the inner ring surface of the bevel gear is integrally provided with a protruding strip that cooperates with the inlay groove, and the protruding strip abuts against the inner end of the inlay groove. The driven shaft has a groove 2 extending along its axis at the other end, and the inner ring surface of the bevel gear 2 has an integral protruding strip 2 that mates with the groove 2, with the protruding strip 2 abutting against the inner end of the groove 2.

[0009] A further preferred embodiment of this utility model is: a plurality of mating holes are provided at the end of the drive shaft, and a shaft rod that mates with the mating holes is fixed at one end of the driven shaft.

[0010] A further preferred embodiment of this utility model is: an outer sleeve is rotatably mounted on the outer ring of the drive shaft end, the outer sleeve is fixed to the housing, and the inner side of the outer sleeve has a sealing ring that is pressed against the housing.

[0011] A further preferred embodiment of this utility model is: the end cap is threadedly connected to the other end of the transverse cavity, and the inward side of the end cap also has a sealing ring that is pressed against the box body.

[0012] A further preferred embodiment of this utility model is: the inner wall of the transverse cavity is fixed with multiple support rings, which are used to support the portion of the driven shaft near one end and the end of the drive shaft.

[0013] A further preferred embodiment of this utility model is: the inner wall of the transverse cavity is also fixed with multiple supporting segments arranged in a row. The multiple supporting segments are used to support the driven shaft. The multiple supporting segments are located at the lower end of the bevel gear, and the outermost supporting segment abuts against the inner end of the second bevel gear. Multiple support rings and multiple support segments have channels opened along the axis of the transverse cavity near the lower end.

[0014] A further preferred embodiment of this utility model is: a support ring with the same outer diameter as the inner diameter of the transverse cavity is sleeved on the outer wall of the driven shaft, and the support ring is supported between the bevel gear and the end cover.

[0015] Compared with the prior art, the advantages of this utility model are: 1. The enclosure is only connected to the outside at both ends of the horizontal cavity, which allows the enclosure to be made of metal or plastic in one piece, minimizing gaps and reducing the risk of water seepage.

[0016] 2. The transmission components are detachable. By removing the end cover, the driven shaft and connecting parts inside can be removed. The propeller can be removed by removing the outer sleeve at the drive shaft end. During maintenance, only the two ends of the transverse cavity need to be operated to fully inspect or replace the internal transmission components.

[0017] 3. The transverse cavity is equipped with multiple support rings and multiple support sections to support the driven shaft, so that the driven shaft can be removed while maintaining relatively high stability. There are gaps between the multiple support rings and multiple support sections to fill with lubricating oil. At the same time, the lubricating oil can smoothly fill or discharge the transverse cavity along the channel to ensure that the lubricating oil fully lubricates the connecting parts. Attached Figure Description

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be regarded as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the half-section structure of the box body of this utility model; Figure 3 This is a schematic diagram of the disassembled structure of the transmission part of this utility model; Figure 4 This is a schematic diagram of the inner wall structure of the box of this utility model; Figure 5 This is an exploded structural diagram of the connector of this utility model; Figure 6 This is a schematic diagram of the planar structure of the connector of this utility model.

[0020] In the diagram: 1. Housing; 11. Longitudinal cavity; 12. Transverse cavity; 13. Mounting cavity; 14. Support ring; 15. Support section; 16. Channel; 2. Propeller; 3. Transmission unit; 31. Drive shaft; 32. Driven shaft; 321. Shaft; 33. Connecting piece; 331. Bevel gear one; 332. Protruding strip one; 333. Bevel gear two; 334. Protruding strip two; 335. Insert groove one; 336. Insert groove two; 337. Support ring; 34. End cover; 35. Drive shaft end; 351. Outer sleeve; 352. Mating hole; 353. Sealing ring. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0022] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0023] This embodiment mainly describes the outboard motor drive system. Please refer to [link / reference]. Figures 1-6 Specifically, the following applies: Outboard motor gearboxes are prone to leaks and are relatively difficult to repair. Therefore, an outboard motor transmission system is proposed, including a housing 1 and a propeller 2. The housing 1 houses a transmission unit 3 for driving the propeller 2. The transmission unit 3 includes: The drive shaft 31 and driven shaft 32 are provided. The housing 1 has a vertically connected longitudinal cavity 11 and a transverse cavity 12. The drive shaft 31 and driven shaft 32 are respectively installed in the longitudinal cavity 11 and the transverse cavity 12 of the housing 1, and the two are perpendicular. The driven shaft 32 is used to drive the propeller 2 to rotate. Connector 33 is installed between drive shaft 31 and driven shaft 32 for kinetic energy transmission; The drive shaft end 35 is fixed to the propeller 2 and extends inward from one end of the transverse cavity 12 to cooperate with one end of the driven shaft 32. End cap 34 is used to close the other end of transverse cavity 12, and end cap 34 abuts against the other end of driven shaft 32.

[0024] Specifically, the upper end of the housing 1 is fixed to the body of the outboard motor, and the drive shaft 31 is driven to rotate by the engine or motor inside the outboard motor. The drive shaft 31 is in a vertical state, and it drives the driven shaft 32 to rotate through the connecting piece 33, thereby causing the propeller 2 to rotate. It should be noted that the transmission part 3 is designed for easy disassembly, and the housing 1 can be integrally molded from metal or plastic to minimize the generation of gaps, making maintenance easier and less prone to water leakage.

[0025] like Figure 5 As shown, the housing 1 also has an installation cavity 13 located at the lower end of the longitudinal cavity 11. The connecting member 33 includes a bevel gear 331 that cooperates with the drive shaft 31 and a bevel gear 333 that cooperates with the driven shaft 32. The bevel gear 331 meshes with the bevel gear 333, and the bevel gear 331 is located in the installation cavity 13.

[0026] Specifically, the drive shaft 31 and driven shaft 32 inside the housing 1 are driven by bevel gear 331 and bevel gear 333. When the drive shaft 31 rotates, the driven shaft 32 also rotates.

[0027] like Figures 4-6 As shown, the outer side of bevel gear 331 contacts the inner wall of mounting cavity 13 to prevent bevel gear 331 from shaking.

[0028] Specifically, bevel gear 331 engages with drive shaft 31 and is embedded in mounting cavity 13. The lower end of bevel gear 331 contacts driven shaft 32 to ensure that the position of bevel gear 331 does not change.

[0029] like Figure 5As shown, the lower end of the drive shaft 31 is provided with an upwardly extending inlay groove 335, and the inner ring surface of the bevel gear 331 is integrally provided with a protruding strip 332 that mates with the inlay groove 335. The protruding strip 332 abuts against the inner end of the inlay groove 335. The driven shaft 32 has a groove 336 extending along its axis at the other end. The inner ring surface of the bevel gear 333 has an integral protrusion 334 that mates with the groove 336. The protrusion 334 abuts against the inner end of the groove 336.

[0030] Specifically, through the setting of the inlay groove 335, the protruding strip 332, the inlay groove 336 and the protruding strip 334, the bevel gear 331 and the bevel gear 333 can be installed and disassembled without the aid of any external equipment. The operation can be carried out by opening and closing the end cover 34.

[0031] like Figure 3 and Figure 5 As shown, the drive shaft end 35 has multiple mating holes 352, and one end of the driven shaft 32 is fixed with a shaft rod 321 that mates with the mating holes 352; Specifically, by engaging the shaft 321 at the end of the driven shaft 32 with the mating hole 352, the propeller 2 can be driven to rotate, while also facilitating the disassembly and maintenance of the driven shaft 32.

[0032] like Figure 3 and Figure 5 As shown, an outer sleeve 351 is rotatably mounted on the outer ring of the drive shaft end 35. The outer sleeve 351 is fixed to the housing 1, and the inward-facing side of the outer sleeve 351 has a sealing ring 353 that presses against the housing 1. This allows the drive shaft end 35 to be disassembled, facilitating the removal and maintenance of the entire propeller 2.

[0033] The end cap 34 is threaded to the other end of the transverse cavity 12, and the inward side of the end cap 34 also has a sealing ring 353 that is pressed against the housing 1.

[0034] Specifically, the housing 1 is only connected to the outside at both ends. As long as the two ends are sealed, water can be prevented from seeping into the transverse cavity 12. During maintenance, only the two ends need to be disassembled to remove the internal transmission structure for maintenance or replacement.

[0035] like Figures 3-6 As shown, the inner wall of the transverse cavity 12 is fixed with multiple support rings 14, which are used to support the portion of the driven shaft 32 near one end and the drive shaft end 35.

[0036] The inner wall of the transverse cavity 12 is also fixed with multiple supporting sections 15 arranged in a row. The multiple supporting sections 15 are used to support the driven shaft 32. The multiple supporting sections 15 are located at the lower end of the first bevel gear 331, and the outermost supporting section 15 abuts against the inner end of the second bevel gear 333. A channel 16 is formed along the axis of the transverse cavity 12 near the lower end of the multi-ring support 14 and the multi-segment support section 15.

[0037] Specifically, the aforementioned support ring 14 and support section 15 are used to support the driven shaft 32 and drive shaft end 35, keeping the driven shaft 32 and drive shaft end 35 in a stable state. Secondly, they also leave a gap around the driven shaft 32 for lubricating oil, preventing wear on the connecting part 33. It should be noted that the channel 16... Figure 4 As shown, when the support ring 14 and support section 15 are cut off, lubricating oil is added to or poured out of the transverse cavity 12, and the lubricating oil moves along the channel 16 so that the lubricating oil can be filled or completely flowed out.

[0038] like Figures 5-6 As shown, a support ring 337 with the same outer diameter as the inner diameter of the transverse cavity 12 is sleeved on the outer wall of the driven shaft 32. The support ring 337 is supported between the bevel gear 333 and the end cover 34.

[0039] Specifically, the support ring 337 is used to support the second bevel gear 333 to prevent the second bevel gear 333 from shifting, and also to support the driven shaft 32 to keep the driven shaft 32 stable.

[0040] Working principle: By rotating the end cover 34, the end cover 34 is separated from the transverse cavity 12. Based on this, the driven shaft 32, bevel gear 333 and support ring 337 can be directly tilted out. When the driven shaft 32 is taken out, bevel gear 331 can also be disengaged from the drive shaft 31 downwards. Similarly, it can be taken out along the transverse cavity 12, which makes it easy to take out and replace or maintain the various components inside the box 1. By taking out the outer sleeve 351, the propeller 2 can be separated from the box 1, so that only the two ends of the transverse cavity 12 of the box 1 are connected to the outside. This allows the box 1 to be set up as a whole, minimizing gaps and keeping the box 1 in a complete state, making it less likely for water to move inward along the gaps.

[0041] In addition, the support ring 14, support section 15 and support ring 337 ensure that the driven shaft 32 and drive shaft end 35 are in a stable support state, and vibration is not easily generated even when rotating. It should be noted that there is a cavity between the support ring 14 and support section 15, which is filled with lubricating oil to ensure that bevel gear 1 331 and bevel gear 2 333 are immersed in lubricating oil. When lubricating oil is added into the transverse cavity 12, bevel gear 1 331, drive shaft end 35 and driven shaft 32 are installed first. Then the transverse cavity 12 is controlled to be in a vertical state. Then the lubricating oil is poured into the transverse cavity 12. Then bevel gear 2 333 and support ring 337 are installed. Finally, the end cover 34 is installed.

[0042] It should be noted that when the lubricating oil is poured in or out, it flows along channel 16 to avoid residue.

[0043] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] The outboard motor transmission system provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand this utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An outboard motor drive system, comprising a housing and a propeller, characterized in that, The housing contains a transmission unit for driving the propeller to rotate. The transmission unit includes: The drive shaft and driven shaft are respectively installed in the longitudinal and transverse cavities of the housing, which are vertically connected. The driven shaft and driven shaft are respectively installed in the longitudinal and transverse cavities of the housing, and the two are perpendicular to each other. The driven shaft is used to drive the propeller to rotate. A connecting component, installed between the drive shaft and the driven shaft, is used for kinetic energy transmission; The drive shaft end is fixed to the propeller and extends inward from one end of the transverse cavity to mate with one end of the driven shaft. The end cap is used to seal the other end of the transverse cavity, and the end cap abuts against the other end of the driven shaft.

2. The outboard motor drive system according to claim 1, characterized in that, The housing also has an installation cavity located at the lower end of the longitudinal cavity. The connecting parts include a bevel gear one that meshes with the drive shaft and a bevel gear two that meshes with the driven shaft. The bevel gear one and the bevel gear two mesh with each other, and the bevel gear one is located in the installation cavity.

3. The outboard motor drive system according to claim 2, characterized in that, The outer side of the bevel gear contacts the inner wall of the mounting cavity to prevent the bevel gear from shaking.

4. The outboard motor drive system according to claim 2, characterized in that, The lower end of the drive shaft is provided with an upwardly extending inlay groove, and the inner ring surface of the bevel gear is integrally provided with a protruding strip that mates with the inlay groove. The protruding strip abuts against the inner end of the inlay groove. The driven shaft has a groove 2 extending along its axis at the other end, and the inner ring surface of the bevel gear 2 has an integral protruding strip 2 that mates with the groove 2, with the protruding strip 2 abutting against the inner end of the groove 2.

5. The outboard motor drive system according to claim 4, characterized in that, The drive shaft has multiple mating holes at one end, and a shaft rod that mates with the mating holes is fixed at one end of the driven shaft.

6. The outboard motor drive system according to claim 1, characterized in that, The outer ring of the drive shaft is rotatably mounted with an outer sleeve, which is fixed to the housing. The inner side of the outer sleeve has a sealing ring that is pressed against the housing.

7. The outboard motor drive system according to claim 6, characterized in that, The end cap is threaded to the other end of the transverse cavity, and the inward-facing side of the end cap also has a sealing ring that is pressed against the housing.

8. The outboard motor drive system according to claim 2, characterized in that, The inner wall of the transverse cavity is fixed with multiple support rings, which are used to support the part of the driven shaft near one end and the end of the drive shaft.

9. The outboard motor drive system according to claim 8, characterized in that, The inner wall of the transverse cavity is also fixed with multiple supporting sections arranged in a row. These supporting sections are used to support the driven shaft. The supporting sections are located at the lower end of the bevel gear, and the outermost supporting section abuts against the inner end of the second bevel gear. Multiple support rings and multiple support segments have channels opened along the axis of the transverse cavity near the lower end.

10. The outboard motor drive system according to claim 9, characterized in that, A support ring with the same outer diameter as the inner diameter of the transverse cavity is fitted on the outer wall of the driven shaft. The support ring is supported between the bevel gear and the end cover.

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