A protection structure of a motorcycle crankcase fine filter

Abstract

The application provides a protection structure of a motorcycle crankcase fine filter and belongs to the motorcycle technical field. The protection structure solves the problem that the existing motorcycle fine filter is easily hit by stones. The motorcycle comprises a frame and a suspension assembly, a crankcase is arranged at the bottom of the frame, the front end of the crankcase is connected with the frame through the suspension assembly, the suspension assembly comprises a connecting shaft which is hinged with the crankcase, the protection structure comprises a hanging arm, the top of the hanging arm is hinged with the frame, the bottom of the hanging arm is hinged with the connecting shaft, a fine filter is fixedly connected to the side of the front end of the crankcase, the fine filter is located right behind the hanging arm in the front-rear direction of the motorcycle, and the fine filter is set back in the left-right direction of the motorcycle relative to the hanging arm. The protection structure of the motorcycle crankcase fine filter has the advantages of reducing the probability that the fine filter is hit by stones and prolonging the service life of the fine filter.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of motorcycles and relates to a protection structure of a motorcycle crankcase fine filter. BACKGROUND

[0002] The engine comprises a crankcase, the crankcase is provided with lubricating oil, and a fine filter is installed on the crankcase to filter the lubricating oil, so that the lubricating effect and service life of the lubricating oil are ensured.

[0003] The existing fine filter installation mode, for example, the engine with a chain tensioner disclosed in Chinese patent document [Patent No.: 201110436644.1; Application Publication No.: CN102562288B] has a driving rotating member fixed to a driving shaft connected to a housing member through a shaft neck, a driven rotating member fixed to a driven shaft connected to the housing member through a shaft neck, an annular transmission belt wound between the driving rotating member and the driven rotating member, a guide member arranged in contact with the annular transmission belt, one end of the guide member being rotatably supported on the housing member, and the other end of the guide member being a free end, and a chain tensioner for pressing the free end of the guide member to apply tension to the annular transmission belt, the chain tensioner comprising a containing recess arranged in the housing member, the containing recess having an opening portion located outward in the direction of the driving shaft, an elastic member passing through the opening portion and contained in the containing recess to press the guide member towards the annular transmission belt, and a cover member for covering the opening portion of the containing recess.

[0004] The engine with the above structure comprises a crankcase and a fine filter, the fine filter is fixed to the outside of the crankcase and fixed to the front end of the crankcase, and in the process of driving, the front wheel of the vehicle exists the problem of throwing stones on the road backwards, and the thrown stones exist the problem of hitting the fine filter, which makes the fine filter be deformed by being hit, even causes the direct damage of the fine filter, and reduces the service life of the fine filter. SUMMARY

[0005] The application aims at the above problems in the prior art, and provides a protection structure of a motorcycle crankcase fine filter, and solves the technical problem of how to reduce the probability of the fine filter being hit by stones and improve the service life of the fine filter.

[0006] The purpose of the present application can be achieved by the following technical solutions: a protection structure of a motorcycle crankcase fine filter, the motorcycle comprising a frame and a suspension assembly, the crankcase being arranged at the bottom of the frame, the front end of the crankcase being connected with the frame through the suspension assembly, the suspension assembly comprising a connecting shaft hinged with the crankcase, characterized in that the protection structure comprises a boom, the top of the boom being hinged with the frame, the bottom being hinged with the connecting shaft, the fine filter being fixedly connected to the side of the front end of the crankcase, the fine filter being located directly behind the boom in the front-rear direction of the motorcycle, and the fine filter being recessed relative to the boom in the left-right direction of the motorcycle.

[0007] During driving of the motorcycle, the rotation of the front wheel can cause the stones on the road to be thrown backward, since the boom is installed directly in front of the fine filter, and the fine filter is recessed relative to the boom in the left-right direction of the motorcycle, i.e., the fine filter is completely hidden behind the boom, the boom can block the stones, so that the fine filter is not hit by the stones, the probability of the fine filter being hit by the thrown stones is reduced, and the service life of the fine filter is improved. The suspension assembly can alleviate the transmission of the vibration of the engine to the frame, the top of the boom is hinged with the frame, the bottom is hinged with the connecting shaft, and the connecting shaft connects the suspension assembly and the crankcase, i.e., the boom can also play an auxiliary buffering role, the transmission of the vibration of the engine to the frame is alleviated, and the comfort of the vehicle is improved.

[0008] In the protection structure of the motorcycle crankcase fine filter, in the vertical direction, the top of the fine filter is not higher than the top of the boom, and the bottom of the fine filter is not lower than the bottom of the boom. This structure ensures that the boom shields the fine filter as a whole, reduces the probability of the fine filter being hit by the thrown stones, and improves the service life of the fine filter.

[0009] In the protection structure of the motorcycle crankcase fine filter, one side of the crankcase has a box wall protrudingly arranged for mounting a chain, a mounting space recessedly arranged is formed between the front end of the box wall and the boom, and the fine filter is located in the mounting space. The box wall is used in cooperation with the boom to avoid the fine filter being hit by the thrown stones from the rear, further reduces the probability of the fine filter being hit by the thrown stones, and improves the service life of the fine filter.

[0010] In the protective structure of the motorcycle crankcase fine filter, the frame includes a suspension pipe and a pair of hanging plates, the pair of hanging plates are fixedly connected to the bottom of the suspension pipe, the top of the hanging arm is located between the rear portions of the pair of hanging plates, and the top of the hanging arm is hingedly connected to the pair of hanging plates. The setting of the hanging plates makes the position of the hanging arm more reasonable, the top of the hanging arm is located between the rear portions of the pair of hanging plates, that is, the pair of hanging plates protect the hanging arm, the hanging plates can block part of the flying stones, reduce the probability of the hanging arm being hit by the stones, reduce the probability of the fine filter being hit by the flying stones, and prolong the service life of the fine filter.

[0011] In the protective structure of the motorcycle crankcase fine filter, the suspension pipe is located in front of the hanging arm in the front-rear direction of the motorcycle. This structure makes the suspension pipe block part of the flying stones, reduces the probability of the fine filter being hit by the flying stones, and prolongs the service life of the fine filter.

[0012] In the protective structure of the motorcycle crankcase fine filter, the suspension pipe is located in front of the hanging arm in the front-rear direction of the motorcycle. This structure makes the suspension pipe block part of the flying stones, reduces the probability of the fine filter being hit by the flying stones, and prolongs the service life of the fine filter.

[0013] In the protective structure of the motorcycle crankcase fine filter, the front side of the hanging arm is protrudingly arranged forward, and the rear side of the hanging arm is recessedly arranged forward. This structure of the hanging arm in the front-rear direction of the motorcycle makes the hanging arm have sufficient strength and better rotation, ensures the damping effect, and enables the fine filter to be better installed in the installation space without being in contact with the hanging arm.

[0014] In the protection structure of the motorcycle crankcase fine filter, the top of the hanging arm is provided with a first hinge hole, a first buffer ring is fixed in the first hinge hole, a first hinge rod is arranged in the first buffer ring, the first hinge rod is hinged to the frame, the bottom of the hanging arm is provided with a second hinge hole, a second buffer ring is fixed in the second hinge hole, and one end of the connecting shaft is arranged in the second buffer ring, so that the hanging arm is hinged to the suspension assembly and the crankcase. The first buffer ring and the second buffer ring can absorb a certain buffer, reduce the vibration of the hanging arm, make the hanging arm better alleviate the vibration of the engine transmitted to the frame, and improve the comfort of the whole vehicle.

[0015] In the protection structure of the motorcycle crankcase fine filter, the top of the hanging arm is provided with a first hinge hole, a first buffer ring is fixed in the first hinge hole, a first hinge rod is arranged in the first buffer ring, the first hinge rod is hinged to the frame, the bottom of the hanging arm is provided with a second hinge hole, a second buffer ring is fixed in the second hinge hole, and one end of the connecting shaft is arranged in the second buffer ring, so that the hanging arm is hinged to the suspension assembly and the crankcase. The first buffer ring and the second buffer ring can absorb a certain buffer, reduce the vibration of the hanging arm, make the hanging arm better alleviate the vibration of the engine transmitted to the frame, and improve the comfort of the whole vehicle.

[0016] In the protection structure of the motorcycle crankcase fine filter, the top of the hanging arm is provided with a first hinge hole, a first buffer ring is fixed in the first hinge hole, a first hinge rod is arranged in the first buffer ring, the first hinge rod is hinged to the frame, the bottom of the hanging arm is provided with a second hinge hole, a second buffer ring is fixed in the second hinge hole, and one end of the connecting shaft is arranged in the second buffer ring, so that the hanging arm is hinged to the suspension assembly and the crankcase. The first buffer ring and the second buffer ring can absorb a certain buffer, reduce the vibration of the hanging arm, make the hanging arm better alleviate the vibration of the engine transmitted to the frame, and improve the comfort of the whole vehicle.

[0017] Compared with the prior art, the protection structure of the motorcycle crankcase fine filter has the following advantages:

[0018] 1. The protection structure hides the fine filter completely behind the hanging arm, the hanging arm blocks the stones, so that the stones cannot hit the fine filter, reduces the probability that the fine filter is hit by the flying stones, and improves the service life of the fine filter.

[0019] 2. The protection structure of the hanging arm cooperates with the suspension assembly to play a role in assisting the engine buffer, alleviates the vibration of the engine transmitted to the frame, and improves the comfort of the whole vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 This is a schematic diagram showing the location of the protective structure of this fine filter.

[0021] Figure 2 This is a schematic diagram of the overall structure of the protective structure of this fine filter.

[0022] Figure 3 This is a schematic diagram showing the connection of the protective structure and suspension components of this fine filter.

[0023] Figure 4 This is a schematic diagram of the overall structure of the boom of the protective structure for this fine filter.

[0024] Figure 5 This is a cross-sectional view of the third buffer ring of the protective structure of this fine filter.

[0025] Figure 6 This is a cross-sectional view of the weight reduction hole of the boom in the protective structure of this fine filter.

[0026] In the diagram, 1. Chassis; 11. Suspension tube; 12. Suspension plate; 2. Suspension assembly; 21. Connecting shaft; 22. Cantilever; 3. Crankcase; 31. Crankcase wall; 4. Hanger arm; 41. First hinge hole; 42. First buffer ring; 43. First hinge rod; 44. Second hinge hole; 45. Second buffer ring; 46. Third hinge hole; 47. Third buffer ring; 471. Buffer hole; 48. Third hinge rod; 49. Weight reduction hole; 410. Buffer pad; 5. Fine filter; 6. Installation space; 7. Support frame. Detailed Implementation

[0027] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0028] like Figure 1 , Figure 2 As shown, the motorcycle includes a frame 1, a suspension assembly 2, a crankcase 3, a fine filter 5, and a protective structure. The protective structure of the fine filter 5 includes a boom 4 and a support frame 7.

[0029] like Figure 3 As shown, the crankcase 3 is located at the bottom of the frame 1. The front end of the crankcase 3 is connected to the frame 1 via a suspension assembly 2. The suspension assembly 2 includes a connecting shaft 21 and a cantilever 22. The cantilever 22 is hinged to the crankcase 3 via the connecting shaft 21. The top of the boom 4 is hinged to the frame 1, and the bottom is hinged to the connecting shaft 21. The boom 4 is hinged to the frame 1, the suspension assembly 2, and the crankcase 3.

[0030] Specifically, the frame 1 includes a suspension tube 11 and a pair of hangers 12. The pair of hangers 12 are fixed to the bottom of the suspension tube 11. The top of the boom 4 is located between the rear portions of the pair of hangers 12. The top of the boom 4 is hinged to both the suspension tube 11 and the hangers 12. The suspension tube 11 is located directly in front of the boom 4 along the longitudinal direction of the motorcycle. A support frame 7 is fixed to the side of the boom 22. The bottom of the boom 4 is located between the boom 22 and the support frame 7. A connecting shaft 21 passes through the bottom of the boom 4 and is hinged to the support frame 7. The support frame 7 is located directly in front of the bottom of the boom 4 along the longitudinal direction of the motorcycle.

[0031] The front side of the boom 4 protrudes forward, and the rear side of the boom 4 is recessed forward. For example... Figure 4 The boom 4 has a first hinge hole 41 at its top, in which a first buffer ring 42 is fixedly connected. A first hinge rod 43 passes through the first buffer ring 42 and is hinged to the vehicle frame 1. The boom 4 has a second hinge hole 44 at its bottom, in which a second buffer ring 45 is fixedly connected. One end of the connecting shaft 21 passes through the second buffer ring 45, making the boom 4 hinged to both the suspension assembly 2 and the crankcase 3. The boom 4 has a third hinge hole 46 in its middle, in which a third buffer ring 47 is fixedly connected. A third hinge rod 48 passes through the third buffer ring 47 and is hinged to the vehicle frame 1. Figure 5 As shown, in this embodiment, the third buffer ring 47 has two buffer holes 471 spaced apart. The buffer holes 471 are recessed along the axial direction of the third hinge rod 48. In actual production, the number of buffer holes 471 can be three or four. The buffer holes 471 penetrate the third buffer ring 47 along the axial direction of the third hinge rod 48.

[0032] like Figure 6 As shown, the boom 4 has a weight reduction hole 49 that runs through the motorcycle in the left-right direction. The inner diameter of the weight reduction hole 49 gradually decreases from the inside to the outside. A buffer pad 410 is snapped and fixed to the outer end of the weight reduction hole 49. The buffer pad 410 protrudes and is located on the outer side of the boom 4.

[0033] The fine filter 5 is fixed to the side of the front end of the crankcase 3. One side of the crankcase 3 has a protruding housing wall 31 for mounting the chain. A recessed mounting space 6 is formed between the front end of the housing wall 31 and the boom 4, and the fine filter 5 is located in the mounting space 6. The fine filter 5 is located directly behind the boom 4 in the longitudinal direction of the motorcycle. The fine filter 5 is recessed relative to the boom 4 in the lateral direction of the motorcycle. In the vertical direction, the top of the fine filter 5 is not higher than the top of the boom 4, and the bottom of the fine filter 5 is not lower than the bottom of the boom 4.

[0034] When the motorcycle is in motion, the front wheel rotates and throws stones on the road backward. The thrown stones hit the suspension tube 11, the suspension plate 12 and the boom 4. This prevents the stones from hitting the fine filter 5.

[0035] The specific embodiments described herein are merely illustrative of the principles of this application. Numerous modifications or adaptations will be readily apparent to those skilled in the art of this application without departing from the spirit or scope of the application as defined by the following claims.

[0036] Although the terms frame 1, suspension tube 11, hanger plate 12, suspension assembly 2, connecting shaft 21, suspension arm 22, crankcase 3, case wall 31, hanger arm 4, first hinged hole 41, first buffer ring 42, first hinged rod 43, second hinged hole 44, second buffer ring 45, third hinged hole 46, third buffer ring 47, buffer hole 471, third hinged rod 48, weight-reducing hole 49, buffer pad 410, fine filter 5, mounting space 6, support frame 7, etc. are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the nature of the present application; any interpretation of them as being any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A protective structure for a motorcycle crankcase filter, the motorcycle including a frame (1) and a suspension assembly (2), the crankcase (3) being disposed at the bottom of the frame (1), the front end of the crankcase (3) being connected to the frame (1) via the suspension assembly (2), the suspension assembly (2) including a connecting shaft (21) hinged to the crankcase (3), characterized in that, The protective structure includes a boom (4), the top of which is hinged to the frame (1) and the bottom of which is hinged to the connecting shaft (21). The fine filter (5) is fixed to the side of the front end of the crankcase (3). The fine filter (5) is located directly behind the boom (4) in the longitudinal direction of the motorcycle. The fine filter (5) is recessed relative to the boom (4) in the left-right direction of the motorcycle. One side of the crankcase (3) has a protruding box wall (31) for installing the chain. A recessed installation space (6) is formed between the front end of the box wall (31) and the boom (4). The fine filter (5) is located in the installation space (6).

2. The protective structure for a motorcycle crankcase fine filter according to claim 1, characterized in that, In the vertical direction, the top of the fine filter (5) is not higher than the top of the boom (4), and the bottom of the fine filter (5) is not lower than the bottom of the boom (4).

3. The protective structure for a motorcycle crankcase fine filter according to claim 1 or 2, characterized in that, The frame (1) includes a suspension tube (11) and a pair of hangers (12), the pair of hangers (12) being fixed to the bottom of the suspension tube (11), the top of the boom (4) being located between the rear of the pair of hangers (12), and the top of the boom (4) being hinged to both of the pair of hangers (12).

4. The protective structure for a motorcycle crankcase fine filter according to claim 3, characterized in that, The suspension tube (11) is located directly in front of the boom (4) along the front-rear direction of the motorcycle.

5. The protective structure for a motorcycle crankcase fine filter according to claim 1 or 2, characterized in that, The suspension assembly (2) also includes a cantilever (22), which is hinged to the crankcase (3) via the connecting shaft (21). A support frame (7) is fixed to the side of the cantilever (22). The bottom of the boom (4) is located between the cantilever (22) and the support frame (7). The connecting shaft (21) passes through the bottom of the boom (4) and is hinged to the support frame (7). The support frame (7) is located in front of the bottom of the boom (4) along the front-rear direction of the motorcycle.

6. The protective structure for a motorcycle crankcase fine filter according to claim 1 or 2, characterized in that, The front side of the boom (4) protrudes forward, and the rear side of the boom (4) is recessed forward.

7. The protective structure for a motorcycle crankcase fine filter according to claim 1 or 2, characterized in that, The top of the boom (4) has a first hinge hole (41), in which a first buffer ring (42) is fixedly connected. A first hinge rod (43) passes through the first buffer ring (42), and the first hinge rod (43) is hinged to the frame (1). The bottom of the boom (4) has a second hinge hole (44), in which a second buffer ring (45) is fixedly connected. One end of the connecting shaft (21) passes through the second buffer ring (45) so that the boom (4) is hinged to the suspension assembly (2) and the crankcase (3).

8. The protective structure for a motorcycle crankcase fine filter according to claim 1 or 2, characterized in that, The boom (4) has a third hinge hole (46) in the middle, a third buffer ring (47) is fixed in the third hinge hole (46), a third hinge rod (48) is passed through the third buffer ring (47), the third hinge rod (48) is hinged to the frame (1), the third buffer ring (47) has a number of buffer holes (471) arranged at intervals, the buffer holes (471) are recessed along the axial direction of the third hinge rod (48) or the buffer holes (471) pass through the third buffer ring (47) along the axial direction of the third hinge rod (48).

9. The protective structure for a motorcycle crankcase fine filter according to claim 1 or 2, characterized in that, The boom (4) has a weight reduction hole (49) that runs through the motorcycle in the left-right direction. The inner diameter of the weight reduction hole (49) gradually decreases from the inside to the outside. The outer end of the weight reduction hole (49) is fixedly connected to a buffer pad (410). The buffer pad (410) protrudes out and is located on the outside of the boom (4).

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