A multi-link rear suspension for a snowmobile

Abstract

The utility model discloses a kind of multi-connecting rod rear suspensions of snowmobile, including suspension main body, the suspension main body includes a set of symmetrically arranged welding frame, and a plurality of connecting shafts and connecting seats are connected between welding frame, the connecting seat top is provided with buffer mechanism, the suspension main body rear end is provided with transmission wheel, the transmission wheel is used for track drive, the buffer mechanism includes a set of symmetrically arranged shock absorber, the shock absorber outside is provided with the isolating pipe of isolated snow, the shock absorber bottom is provided with hinged frame, compared with prior art, the utility model is characterized in that by isolating pipe and sealing ring for shock absorber build airtight space, effectively prevent snow accumulation, utilize the jolt in driving, drive reset shaft stretch, automatically shake off external ice and snow, strong anti-freezing capacity, guarantee suspension stable, transmission wheel side swing axle knock track inner side by centrifugal force change, automatic cleaning snow, prevent icing skid.

Description

Technical Field

[0001] This utility model relates to the field of snowmobile accessories technology, and in particular to a multi-link rear suspension for snowmobiles. Background Technology

[0002] Snowmobiles are snowmobiles that use a combination of tracks and skis. The front skis control the direction, while the rear tracks drive the vehicle. They do not require specific roads and are mainly used for ski resort monitoring, emergency rescue, and winter outdoor sports. Traditional snowmobile suspensions face key challenges when dealing with complex snow conditions: front-end skid suspensions are prone to understeer and a bumpy "kickback" phenomenon on hard snow surfaces, affecting handling stability; rear-end track suspensions generally suffer from "side-hanging" problems, where ice and snow get stuck in the gaps between the mechanisms, causing the suspension to freeze and fail. In actual driving, components such as the gearbox and brakes generate heat, melting the surrounding snow. After parking, this melted snow quickly refreezes into hard ice, freezing moving parts and affecting subsequent cushioning and shock absorption. Utility Model Content

[0003] This utility model addresses technical problems such as shock absorption failure caused by side mounting by providing a multi-link rear suspension for snowmobiles.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a multi-link rear suspension for snowmobiles, including a suspension body; The suspension body includes a set of symmetrically arranged welding frames, and several connecting shafts and connecting seats are connected between the welding frames. A buffer mechanism is provided on the top of the connecting seat, and a transmission wheel is provided at the rear end of the suspension body. The transmission wheel is used for track drive. The buffer mechanism includes a set of symmetrically arranged shock absorbers. Each shock absorber has an isolation tube for isolating snow accumulation. A hinge frame is located at the bottom of each shock absorber and is movably mounted outside the connecting seat. Each shock absorber has a snap-fit ​​ring connected to its top, and a lifting shaft is installed inside the snap-fit ​​ring. The isolation tube and sealing ring create a sealed space for the shock absorber, effectively preventing snow accumulation. The vibrations during driving drive the return shaft to extend, automatically shaking off external ice and snow. This provides strong anti-freezing capability and ensures suspension stability. The swing shaft on the drive wheel side uses centrifugal force to strike the inside of the track, automatically clearing snow and preventing icing and slippage.

[0005] A further preferred embodiment of this invention is as follows: A plurality of positioning plates are provided on one side of the drive wheel. Rectangular grooves are formed inside each positioning plate, and a plurality of swing shafts can be installed inside these grooves to clean the inner side of the track using centrifugal force. Swing shafts are installed within the positioning plates on one side of the drive wheel. When the speed of the snowmobile changes, the swing shafts utilize the resulting change in centrifugal force to strike the inner side of the track, effectively clearing away accumulated snow and larger snow chunks that have become trapped inside the track.

[0006] A further preferred embodiment of this utility model is: a snap-fit ​​shaft is provided at the bottom of the shock absorber, the snap-fit ​​shaft is connected to the top of the hinge frame, and a buffer spring is provided on the outside of the movable end of the shock absorber, which can play a buffering role during operation.

[0007] A further preferred embodiment of this utility model is as follows: a sealing ring is connected to the bottom of the inner wall of the isolation tube, a sealing ring is provided inside the sealing ring, and the sealing ring is attached to the bottom connecting snap shaft of the shock absorber. A docking ring is provided at the bottom of the sealing ring. The isolation tube, sealing ring and docking ring are arranged to create a relatively closed working space for the shock absorber, effectively preventing snow from accumulating directly on the key components of the shock absorber.

[0008] A further preferred embodiment of this utility model is as follows: a plurality of fixing grooves are formed on the surface of the isolation tube, and a reset shaft is hinged to the top of the fixing groove. A telescopic insert is provided at the bottom of the reset shaft. A reset spring plate is provided between the outer wall of the reset shaft and the inner wall of the straight groove. A plurality of support frames are provided outside the reset shaft. A heat insulation plate can be connected to the outside of the support frame. The heat insulation plate can reduce the situation where the external snow melts and refreezes in the cold wind.

[0009] A further preferred embodiment of this utility model is as follows: a sliding groove is provided on the inner wall of the sealing ring and the docking ring, and a connecting reset slider is provided inside the sliding groove. The reset slider is externally connected to the telescopic plug rod. Several conical push blocks are provided on the outer wall of the bottom of the shock absorber. The conical push blocks are used to insert into the sliding groove to control the reset slider to drive the reset shaft to extend outward, reducing the accumulation of snow or ice on the surface. The design of the outwardly extending reset shaft and support frame can automatically shake off the snow and ice attached to the outside of the isolation tube when the vehicle is bumpy, which significantly reduces the risk of suspension freezing caused by snow melting and recondensation, and ensures the reliability and durability of the buffer mechanism in extremely cold snowy environments.

[0010] A further preferred embodiment of this utility model is as follows: the reset slider is provided with a locking post connected to one side of the sliding groove, and a blocking end block is provided on the outside of the sliding groove inside the sealing ring to limit the locking post, which is used to control the movement stroke of the reset slider, control the movement formation, and reduce the excessive stretching resistance of the reset shaft.

[0011] A further preferred embodiment of this utility model is: a set of support shafts is provided at the top of the suspension body, and an installation shaft is provided at the top of the support shafts, with both ends of the installation shafts used to connect to the top support plate.

[0012] A further preferred embodiment of this utility model is: a set of transmission wheels is provided outside the lifting shaft, and the transmission wheels are used for track support, playing a supporting role.

[0013] Compared with the prior art, the advantages of this utility model are: 1. By setting up an isolation pipe, a sealing ring, and a docking ring, this utility model creates a relatively enclosed working space for the shock absorber, effectively preventing snow from accumulating directly on the key components of the shock absorber, and ensuring the reliability and durability of the buffer mechanism in extremely cold snowy environments.

[0014] 2. This utility model, through the design of an outwardly extendable reset shaft and support frame, can automatically shake off snow and ice attached to the outside of the isolation pipe when the vehicle is bumpy, which significantly reduces the risk of suspension freezing caused by snow melting and recondensation.

[0015] 3. This utility model has a swing shaft installed in the positioning plate on one side of the transmission wheel. When the speed of the snowmobile changes, the swing shaft uses the change in centrifugal force to knock on the inside of the track, which can promptly clear the snow and large snow chunks that have been rolled into the track, preventing the snow from being compacted and frozen in the track system, thereby avoiding transmission slippage and efficiency loss, and ensuring the smoothness and stability of power transmission. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural diagram of the transmission wheel of this utility model; Figure 3 This is a schematic diagram of the buffer mechanism structure of this utility model; Figure 4 This is a schematic diagram of the shock absorber structure of this utility model; Figure 5 This is a schematic diagram of the exploded disassembly structure of the shock absorber and isolation pipe of this utility model; Figure 6This is a schematic diagram of the exploded disassembly structure of the sealing ring of this utility model; Figure 7 This utility model Figure 6 A magnified schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Suspension body; 2. Drive wheel; 3. Buffer mechanism; 11. Connecting seat; 12. Support shaft; 21. Positioning plate; 31. Hinge frame; 311. Snap-fit ​​shaft; 32. Lifting shaft; 321. Buffer spring; 33. Shock absorber; 34. Isolation tube; 35. Sealing ring; 36. Connecting ring; 37. Reset shaft; 371. Support frame; 38. Reset slider; 39. Conical push block. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] This embodiment mainly describes the title of a multi-link rear suspension for a snowmobile. Please refer to [link / reference needed]. Figures 1-7 Specifically, a multi-link rear suspension for snowmobiles includes a suspension body 1. The suspension body 1 includes a set of symmetrically arranged welding frames, and several connecting shafts and connecting seats 11 are connected between the welding frames. A buffer mechanism 3 is provided on the top of the connecting seat 11, and a transmission wheel 2 is provided at the rear end of the suspension body 1. The transmission wheel 2 is used for track drive. The buffer mechanism 3 includes a set of symmetrically arranged shock absorbers 33. The shock absorbers 33 are equipped with isolation pipes 34 to isolate snow accumulation. The bottom of the shock absorbers 33 is equipped with a hinge frame 31, which is movably mounted outside the connecting seat 11. Each shock absorber 33 is connected to a snap ring at the top, and a lifting shaft 32 is provided inside the snap ring. The isolation pipe 34 and the sealing ring 35 form a sealed space for the shock absorbers 33, effectively preventing snow accumulation. By utilizing the bumps during driving, the reset shaft 37 is driven to extend and automatically shake off external ice and snow. It has strong anti-freezing ability and ensures suspension stability. The swing shaft on the transmission wheel side uses centrifugal force to strike the inner side of the track, automatically clearing snow accumulation and preventing icing and slippage.

[0022] A further preferred embodiment of this utility model is: Figure 1 and Figure 2As shown, several positioning plates 21 are provided on one side of the transmission wheel 2. Rectangular grooves are opened inside the positioning plates 21, and several swing shafts can be installed inside the rectangular grooves. These are used to clean the inside of the track by means of centrifugal force. In actual use, when the speed of the snowmobile changes, snow may fly and mix into the inside of the track. At this time, the swing shafts can also swing under the action of centrifugal force to knock on the inside of the track, reducing the situation of large snow chunks remaining. This is used to control the impact of snow melting and freezing on the track.

[0023] A further preferred embodiment of this utility model is: Figure 4 As shown, the bottom of the shock absorber 33 is provided with a snap-fit ​​shaft 311, which is connected to the top of the hinge frame 31. A buffer spring 321 is provided on the outside of the movable end of the shock absorber 33. With the help of the shock absorber 33, the shock absorber 33 can play a buffering role and reduce the bumps and vibrations generated during the operation of the snowmobile.

[0024] A further preferred embodiment of this utility model is: Figure 4 and Figure 5 As shown, a sealing ring 35 is connected to the bottom of the inner wall of the isolation tube 34. A sealing ring is provided inside the sealing ring 35, and the sealing ring is attached to the bottom of the shock absorber 33 at the connecting shaft 311. A docking ring 36 is provided at the bottom of the sealing ring 35. The isolation tube 34 and the sealing ring 35 can form a relatively closed buffer space, which reduces the accumulation of snow that would occur if the shock absorber 33 were directly suspended in the air, thus affecting the subsequent shock absorption effect and the overall driving experience.

[0025] A further preferred embodiment of this utility model is: Figure 6 and Figure 7 As shown, the surface of the isolation tube 34 has several fixed grooves, and a reset shaft 37 is hinged to the top of the fixed groove. A telescopic rod is provided at the bottom of the reset shaft 37. A reset spring plate is provided between the outer wall of the reset shaft 37 and the inner wall of the straight groove. Several support frames 371 are provided outside the reset shaft 37. A heat insulation plate can be connected to the outside of the support frame 371. In actual operation, as the shock absorber 33 moves due to bumps, the sealing ring 35 sleeved on the outside of the shock absorber 33 can move. At this time, the reset slider 38 inside the sliding groove can be pushed by the conical push block 39, thereby controlling the piston rod welding and the reset shaft 37 to extend outward. This can shake off the snow and ice debris accumulated on the outside, reducing the situation where the buffer mechanism 3 is frozen after the snow melts and turns into ice on the outside of the isolation tube 34. It plays an auxiliary role in clearing snow and ice debris during the bumps, thereby maintaining the overall shock absorption effect. In addition, the heat insulation plate can slow down the melting speed of the snow and reduce the situation where the snow re-condenses into ice in the cold wind.

[0026] A further preferred embodiment of this utility model is: Figure 7As shown, the inner walls of the sealing ring 35 and the docking ring 36 are provided with sliding grooves, and the sliding grooves are provided with a connecting reset slider 38. The reset slider 38 is connected to the telescopic rod. The bottom outer wall of the shock absorber 33 is provided with several conical push blocks 39. The conical push blocks 39 are used to insert into the sliding grooves and control the reset slider 38 to drive the reset shaft 37 to extend outward, reducing the accumulation of snow or ice on the surface. With the help of the conical push blocks 39, they can be locked inside the sliding grooves, thereby pushing the reset slider 38 to move. When the snowmobile encounters bumps and vibrations, it continues to push back and forth, which is convenient for subsequent snow and ice removal.

[0027] A further preferred embodiment of this utility model is: Figure 7 As shown, the reset slider 38 is connected to a snap-fit ​​post on one side of the sliding groove. The outer side of the sliding groove inside the sealing ring 35 is provided with a blocking end block to limit the snap-fit ​​post, which is used to control the movement stroke of the reset slider 38 and adjust the extension range of the reset shaft 37 according to the actual situation.

[0028] A further preferred embodiment of this utility model is: Figure 1 As shown, a set of support shafts 12 are provided on the top of the suspension body 1, and a mounting shaft is provided on the top of the support shafts 12, and the two ends of the mounting shaft are used to connect to the top support plate.

[0029] A further preferred embodiment of this utility model is: Figure 1 As shown, a set of transmission wheels is provided on the outside of the lifting shaft 32, and the transmission wheels are used for track support.

[0030] 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.

[0031] The present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the present invention and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A multi-link rear suspension for a snowmobile, characterized in that, Including the main suspension unit; The suspension body includes a set of symmetrically arranged welding frames, and several connecting shafts and connecting seats are connected between the welding frames. A buffer mechanism is provided on the top of the connecting seat, and a transmission wheel is provided at the rear end of the suspension body. The transmission wheel is used for track drive. The buffer mechanism includes a set of symmetrically arranged shock absorbers. The shock absorbers are equipped with isolation pipes to isolate snow accumulation. The bottom of the shock absorbers is equipped with a hinge frame, which is movably disposed outside the connecting seat. The top of each shock absorber is connected with a snap ring, and a lifting shaft is provided inside the snap ring.

2. The multi-link rear suspension for a snowmobile according to claim 1, characterized in that, A number of positioning plates are provided on one side of the drive wheel. The positioning plates have rectangular grooves inside, and a number of swing shafts can be provided inside the rectangular grooves to clean the inside of the track by means of centrifugal force.

3. A multi-link rear suspension for a snowmobile according to claim 1, characterized in that, The shock absorber has a snap-fit ​​shaft at its bottom, which is connected to the top of the hinge frame. A buffer spring is provided on the outside of the movable end of the shock absorber.

4. A multi-link rear suspension for a snowmobile according to claim 1, characterized in that, A sealing ring is connected to the bottom of the inner wall of the isolation tube. A sealing ring is provided inside the sealing ring and is attached to the bottom connecting snap shaft of the shock absorber. A mating ring is provided at the bottom of the sealing ring.

5. A multi-link rear suspension for a snowmobile according to claim 1, characterized in that, The surface of the isolation tube is provided with several fixing grooves, and a reset shaft is hinged to the top of the inside of the fixing groove. A telescopic plug is provided at the bottom of the reset shaft. A reset spring plate is provided between the outer wall of the reset shaft and the inner wall of the straight groove. Several support frames are provided outside the reset shaft. A heat insulation plate can be connected to the outside of the support frames.

6. A multi-link rear suspension for a snowmobile according to claim 4, characterized in that, The sealing ring and the docking ring are provided with sliding grooves on their inner walls, and a connecting reset slider is provided inside the sliding groove. The reset slider is connected to the telescopic plug rod on the outside. Several conical push blocks are provided on the bottom outer wall of the shock absorber. The conical push blocks are used to insert into the sliding groove to control the reset slider to drive the reset axis to extend outward, thereby reducing the accumulation of snow or ice on the surface.

7. A multi-link rear suspension for a snowmobile according to claim 6, characterized in that, The reset slider is provided on one side of the sliding groove and connected to a snap-fit ​​post. The outer side of the sliding groove inside the sealing ring is provided with a blocking end block that restricts the snap-fit ​​post, which is used to control the movement stroke of the reset slider.

8. A multi-link rear suspension for a snowmobile according to claim 1, characterized in that, The top of the suspension body is provided with a set of support shafts, and the top of the support shafts is provided with mounting shafts, and the two ends of the mounting shafts are used to connect to the top support plate.

9. A multi-link rear suspension for a snowmobile according to claim 1, characterized in that, A set of transmission wheels is provided outside the lifting shaft, and the transmission wheels are used for track support.

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