Damping lightweight transmission shaft

Abstract

The utility model discloses a shock attenuation light weight transmission shaft, including first axle body, second axle body and connecting axle, first axle body and second axle body all are composed of outer axle body, intermediate axle and multiple connecting plate, and one end of outer axle body is equipped with the connecting end, and the connecting end has the spline groove in, and one end of intermediate axle extends out of outer axle body and is equipped with the connecting hole, and both ends of connecting axle are equipped with the spline shaft respectively, and still have the through -hole of two splines shafts in connecting axle, and still have two pairs of waist hole of going through the inside of connecting axle in connecting axle outside, two spline shafts are inserted in the connecting end of first axle body and second axle body respectively, and the intermediate axle of first axle body and second axle body respectively passes two spline shafts and inserts in the intermediate axle, and two limit rods pass through corresponding waist hole and connecting hole and limit first axle body, second axle body and connecting axle, and the connecting place of first axle body, second axle body and connecting axle is equipped with the thick elastic gasket still, the utility model discloses lighter in quality, and can buffer the vibration better.

Description

Technical Field

[0001] This utility model relates to a shock-absorbing and lightweight transmission shaft. Background Technology

[0002] Patent CN207403559U discloses a lightweight automotive driveshaft, comprising a driveshaft body, a coupling, a sliding sleeve, and a splined shaft fork. One end of the driveshaft body is connected to the coupling, and a first transition zone is provided at the end of the driveshaft body near the coupling. The other end is connected to the sliding sleeve. The splined shaft fork is slidably fitted into the cavity of the sliding sleeve to form a closed space. The end of the splined shaft fork away from the sliding sleeve is connected to the coupling. A second transition zone is provided at the end of the splined shaft near the coupling. Both the first and second transition zones of the shaft body are filled with shock-absorbing filler, which has the effects of lightweighting and absorbing vibration and noise.

[0003] The drive shaft of the above structure only features a lightweight design in the first and second transition zones, and the damping fillers in the first and second transition zones are actually unable to absorb vibrations effectively. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a lightweight drive shaft that is lighter and can better buffer vibrations.

[0005] The technical solution of this utility model is: a shock-absorbing and lightweight transmission shaft, comprising a first shaft body, a second shaft body, and a connecting shaft; The first shaft and the second shaft are both composed of an outer shaft, an intermediate shaft and multiple connecting plates arrayed between the outer shaft and the intermediate shaft. One end of the outer shaft is provided with a connecting end, and the connecting end has a spline groove. One end of the intermediate shaft extends out of the outer shaft and is provided with a connecting hole. The connecting shaft is provided with spline shafts at both ends, and the connecting shaft also has through holes that pass through the two spline shafts. The connecting shaft also has two pairs of waist holes that pass through the interior of the connecting shaft. The two splined shafts are respectively inserted into the connecting end of the first shaft and the second shaft. The intermediate shafts of the first shaft and the second shaft pass through the two splined shafts and are inserted into the intermediate shafts. The two limiting rods pass through the corresponding waist holes and connecting holes to limit the first shaft, the second shaft and the connecting shaft. The connection of the first shaft, the second shaft and the connecting shaft is also provided with a thickened elastic gasket.

[0006] Furthermore, couplings are fixed to the outer ends of the first and second shafts respectively.

[0007] Specifically, each of the connecting plates extends to the connection between the outer shaft and the connecting end.

[0008] Furthermore, the outer sides of the first shaft, the second shaft, and the connecting shaft are each provided with corresponding positioning marks.

[0009] Furthermore, the outer periphery of the connecting end of the first shaft and the second shaft also has a convex ring, and the connection between the connecting shaft and the spline shaft has an annular step corresponding to the elastic washer, and the elastic washer is disposed between the convex ring and the annular step.

[0010] Specifically, a gap is maintained between the two intermediate shafts located within the connecting shaft.

[0011] Furthermore, nuts are screwed onto both ends of the limiting rod.

[0012] Specifically, the outer shaft and the connecting end are integrally formed.

[0013] Specifically, the intermediate shaft and the spline shaft are integrally formed.

[0014] Preferably, the outer shaft and the intermediate shaft are arranged with eight connecting plates.

[0015] The beneficial effects of this utility model are as follows: In this utility model, the first shaft, the second shaft, and the intermediate shaft all adopt a lightweight design, which can effectively reduce the weight of the transmission shaft. The first shaft and the second shaft are both composed of an outer shaft, an intermediate shaft, and multiple connecting plates arrayed between the outer shaft and the intermediate shaft, which can ensure the strength of the first shaft and the second shaft. The connection between the first shaft, the second shaft, and the connecting shaft is connected to the intermediate shaft by a spline shaft, which can ensure the strength of the connection. The two intermediate shafts can extend and retract to a certain extent along the waist hole, and the connection between the first shaft, the second shaft, and the connecting shaft is also provided with a thickened elastic pad, which can better buffer vibration and effectively improve the shock resistance of the transmission shaft. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a cross-sectional view of the first or second shaft in this utility model.

[0017] In the diagram: First shaft 1, Second shaft 2, Connecting shaft 3, Outer shaft 4, Intermediate shaft 5, Connecting plate 6, Connecting end 7, Spline shaft 8, Limiting rod 9, Elastic washer 10, Protruding ring 11, Nut 12. Detailed Implementation

[0018] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0019] Combination Figure 1-3As shown, a shock-absorbing and lightweight drive shaft includes a first shaft body 1, a second shaft body 2, and a connecting shaft 3; The first shaft 1 and the second shaft 2 are both composed of an outer shaft 4, an intermediate shaft 5 and multiple connecting plates 6 arrayed between the outer shaft 4 and the intermediate shaft 5. One end of the outer shaft 4 is provided with a connecting end 7, and the connecting end 7 has a spline groove. One end of the intermediate shaft 5 extends out of the outer shaft 4 and is provided with a connecting hole. The connecting shaft 3 is provided with spline shafts 8 at both ends, and the connecting shaft 3 also has through holes that pass through the two spline shafts 8. The connecting shaft 3 also has two pairs of waist holes that pass through the interior of the connecting shaft 3 on the outside. The two splined shafts 8 are respectively inserted into the connecting end 7 of the first shaft 1 and the second shaft 2. The intermediate shafts 5 of the first shaft 1 and the second shaft 2 pass through the two splined shafts 8 and are inserted into the intermediate shafts 5. The two limiting rods 9 pass through the corresponding waist holes and connecting holes to limit the first shaft 1, the second shaft 2 and the connecting shaft 3. The connection of the first shaft 1, the second shaft 2 and the connecting shaft 3 is also provided with a thickened elastic gasket 10.

[0020] In the above structure, the first shaft 1, the second shaft 2, and the intermediate shaft 5 all adopt a lightweight design, which can effectively reduce the weight of the drive shaft. The first shaft 1 and the second shaft 2 are both composed of an outer shaft 4, an intermediate shaft 5, and multiple connecting plates 6 arrayed between the outer shaft 4 and the intermediate shaft 5, which can ensure the strength of the first shaft 1 and the second shaft 2. The connection between the first shaft 1, the second shaft 2 and the connecting shaft 3 is connected to the intermediate shaft 5 by a spline shaft 8, which can ensure the strength of the connection. The two intermediate shafts 5 can extend and retract to a certain extent along the waist hole, and the connection between the first shaft 1, the second shaft 2 and the connecting shaft 3 is also provided with a thickened elastic pad 10, which can better buffer vibration and effectively improve the vibration resistance of the drive shaft.

[0021] In another embodiment, couplings are also fixed to the outer ends of the first shaft 1 and the second shaft 2, respectively.

[0022] In another embodiment, such as Figure 1 As shown, each of the connecting plates 6 extends to the connection point between the outer shaft body 4 and the connecting end 7.

[0023] In another embodiment, the first shaft 1, the second shaft 2 and the connecting shaft 3 are respectively provided with corresponding positioning marks on their outer sides to facilitate the assembly of the first shaft 1, the second shaft 2 and the connecting shaft 3.

[0024] In another embodiment, the outer periphery of the connecting end 7 of the first shaft 1 and the second shaft 2 is also provided with a convex ring 11, and the connection between the connecting shaft 3 and the spline shaft 8 is provided with an annular step corresponding to the elastic pad 10. The elastic pad 10 is disposed between the convex ring 11 and the annular step to avoid premature damage to the elastic pad 10.

[0025] In another embodiment, such as Figure 1 As shown, the two intermediate shafts 5 located within the connecting shaft 3 maintain a distance from each other to avoid collision between the two intermediate shafts 5.

[0026] In another embodiment, combined Figure 1 and Figure 2 As shown, nuts 12 are screwed onto both ends of the limiting rod 9.

[0027] Specifically, the outer shaft 4 and the connecting end 7 are integrally formed structures.

[0028] Specifically, the intermediate shaft 5 and the spline shaft 8 are integrally formed structures.

[0029] Specifically, such as Figure 3 As shown, eight connecting plates 6 are arranged between the outer shaft body 4 and the intermediate shaft 5.

Claims

1. A shock-absorbing and lightweight drive shaft, characterized in that, It includes a first shaft (1), a second shaft (2), and a connecting shaft (3); The first shaft (1) and the second shaft (2) are both composed of an outer shaft (4), an intermediate shaft (5) and multiple connecting plates (6) arrayed between the outer shaft (4) and the intermediate shaft (5). One end of the outer shaft (4) is provided with a connecting end (7), and the connecting end (7) has a spline groove. One end of the intermediate shaft (5) extends out of the outer shaft (4) and is provided with a connecting hole. The connecting shaft (3) is provided with spline shafts (8) at both ends, and the connecting shaft (3) also has through holes that pass through the two spline shafts (8). The connecting shaft (3) also has two pairs of waist holes that pass through the interior of the connecting shaft (3) on the outside. The two splined shafts (8) are respectively inserted into the connecting end (7) of the first shaft (1) and the second shaft (2). The intermediate shaft (5) of the first shaft (1) and the second shaft (2) passes through the two splined shafts (8) and is inserted into the intermediate shaft (5). The two limiting rods (9) pass through the corresponding waist hole and connecting hole to limit the first shaft (1), the second shaft (2) and the connecting shaft (3). The connection of the first shaft (1), the second shaft (2) and the connecting shaft (3) is also provided with a thickened elastic gasket (10).

2. The shock-absorbing and lightweight drive shaft as described in claim 1, characterized in that, The outer ends of the first shaft (1) and the second shaft (2) are respectively fixed with couplings.

3. The shock-absorbing and lightweight drive shaft as described in claim 2, characterized in that, Each of the connecting plates (6) extends to the connection between the outer shaft (4) and the connecting end (7).

4. The shock-absorbing and lightweight drive shaft as described in claim 3, characterized in that, The first shaft (1), the second shaft (2) and the connecting shaft (3) are also provided with corresponding positioning marks on their outer sides.

5. A shock-absorbing and lightweight drive shaft as described in claim 4, characterized in that, The outer periphery of the connecting end (7) of the first shaft (1) and the second shaft (2) also has a convex ring (11), and the connection between the connecting shaft (3) and the spline shaft (8) has an annular step corresponding to the elastic pad (10), and the elastic pad (10) is disposed between the convex ring (11) and the annular step.

6. The shock-absorbing and lightweight drive shaft as described in claim 5, characterized in that, The two intermediate shafts (5) located within the connecting shaft (3) maintain a distance.

7. A shock-absorbing and lightweight drive shaft as described in claim 6, characterized in that, Nuts (12) are screwed onto both ends of the limiting rod (9).

8. A shock-absorbing and lightweight drive shaft as described in claim 7, characterized in that, The outer shaft (4) and the connecting end (7) are integrally formed.

9. A shock-absorbing and lightweight drive shaft as described in claim 8, characterized in that, The intermediate shaft (5) and the spline shaft (8) are integrally formed.

10. A shock-absorbing and lightweight drive shaft as described in claim 9, characterized in that, Eight connecting plates (6) are arranged between the outer shaft (4) and the intermediate shaft (5).

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