Driving shaft

Abstract

The utility model discloses a driving shaft which comprises a transmission shaft tube, a spline shaft, a telescopic sleeve and a universal joint fork, and further comprises a spline groove, a transmission shaft, a transmission shaft and a transmission shaft, the lubricating unit is arranged on the telescopic sleeve and communicated into the spline groove; the lubricating unit comprises an oil injection channel which is arranged on the telescopic sleeve; the plurality of sub-runners are respectively connected to the oil injection channel and are communicated to the bottom surface of the spline groove; the sealing cover is fixedly mounted on the oil filling port of the oil filling channel; the oil storage channel is arranged on the spline shaft; the lubricating assemblies are evenly distributed on the spline shaft and communicate with the oil storage channel. Wherein the oil storage channel corresponds to the middle sub-runner in position, in daily production and life, through the arrangement of the oil injection channel, the sub-runner, the oil storage channel and the lubricating assembly, lubricating oil can be added into the telescopic sleeve, flows into the spline groove through the sub-runner and lubricates the spline shaft, and the lubrication is more uniform through the oil discharge channels distributed in the spline shaft.

Description

Technical Field

[0001] The utility model relates to a driving shaft. Background Art

[0002] The transmission shaft is a high-speed, less-supported rotating body, so its dynamic balance is crucial. Generally, the transmission shaft must undergo a dynamic balance test before leaving the factory and be adjusted on a balancing machine. For front-engine, rear-wheel-drive vehicles, it is the shaft that transmits the rotation of the transmission to the main reducer. It can have several sections, and the sections can be connected by universal joints. However, the traditional automobile transmission shaft lacks a shock-absorbing device between the cross shaft bearing and the universal joint fork, which is easy to cause wear, shorten the service life, and is not easy to disassemble and replace.

[0003] There is a transmission shaft that is easy to disassemble and assemble, for example, a new type of automobile transmission shaft with patent number CN215257463U, which includes a transmission shaft tube, a spline shaft is arranged on the left side of the transmission shaft tube, a telescopic sleeve is arranged on the left side of the spline shaft, a universal joint fork is fixedly connected to the left side of the telescopic sleeve and the right side of the transmission shaft tube, threaded sleeve holes and shock absorbing mechanisms are symmetrically arranged on the upper and lower sides of the universal joint fork, a cross shaft bearing is arranged in the groove of the universal joint fork, a shaft body is arranged at the center of the cross shaft bearing, threaded sleeves are fixedly connected around the shaft body, the universal joint fork is fixedly connected to the cross shaft bearing in the vertical direction by a first fixing bolt, the first fixing bolt is threadedly connected to the threaded sleeve hole and the vertical threaded sleeve, a flange fork is horizontally arranged on the cross shaft bearing, and the flange fork is fixedly connected to the horizontal threaded sleeve by a second fixing bolt.

[0004] This embodiment can achieve good shock absorption effect, is easy to disassemble and replace, and prolongs the service life of the transmission shaft, but it has the following defects:

[0005] 1. The transmission shaft has the problem of uneven distribution of lubricating oil;

[0006] 2. Although it can buffer the force between the cross shaft bearing and the universal joint fork, it cannot effectively alleviate the axial vibration of the entire drive shaft. Summary of the invention

[0007] The utility model aims to solve one of the technical problems existing in the prior art.

[0008] The present application provides a drive shaft, including a transmission shaft tube, a spline shaft, a telescopic sleeve and a universal joint fork, and also includes:

[0009] A spline groove disposed in the telescopic sleeve;

[0010] The lubrication unit is arranged on the telescopic sleeve and is connected to the spline groove.

[0011] The lubrication unit consists of:

[0012] An oil injection channel, which is arranged on the telescopic sleeve;

[0013] A plurality of branch flow passages are respectively connected to the oil injection passages and communicated to the bottom surface of the spline groove;

[0014] A sealing cap is fixedly mounted on the oil filling port of the oil filling passage.

[0015] Also includes:

[0016] An oil storage passage, which is arranged on the spline shaft;

[0017] A plurality of lubrication components are evenly distributed on the spline shaft and communicated with the oil storage passage;

[0018] Among them, the oil storage channel corresponds to the position of the middle flow channel.

[0019] The lubrication kit includes:

[0020] A plurality of oil discharge passages are arranged in an annular array on the side wall of the spline shaft and are connected to the oil storage passage;

[0021] A plurality of first mounting grooves, which are respectively arranged on the bottom surface of the matching groove of the spline shaft and are connected with each oil drain passage;

[0022] A plurality of balls are rotatably mounted in the first mounting grooves.

[0023] Also includes:

[0024] A connecting rod, which is fixedly connected to the universal joint through a connecting block;

[0025] A fixed block, which is detachably connected to the connecting rod via a fastener;

[0026] The shock absorbing assembly is arranged on the fixing block.

[0027] The shock absorbing components include:

[0028] A movable slot, which is arranged on the fixed block;

[0029] A slide groove, which is arranged on the side wall of the movable groove;

[0030] A buffer block is slidably mounted in the slide groove;

[0031] A second mounting groove, which is arranged on the buffer block;

[0032] an air bag installed in the second installation groove;

[0033] The supporting component is installed in the movable groove, and the output end is in contact with one side of the airbag.

[0034] The support components include:

[0035] A support plate, which is movably mounted in the second mounting groove, with one end thereof being in contact with one side of the airbag;

[0036] A fixing rod, which is arranged in the movable groove;

[0037] A pair of moving blocks are movably sleeved on both ends of the fixed rod;

[0038] A pair of springs, which are respectively sleeved on the fixed rods and fixedly connected between each moving block and the side wall of the movable groove;

[0039] A pair of connecting rods, both ends of which are rotatably connected between each moving block and the supporting plate.

[0040] The beneficial effects of the utility model are as follows:

[0041] 1. Through the setting of oil injection channel, diverter channel, oil storage channel and lubrication assembly, lubricating oil can be added into the telescopic sleeve, and flow into the spline groove through the diverter channel to lubricate the spline shaft. The oil discharge channel distributed in the spline shaft makes the lubrication more uniform;

[0042] 2. Through the arrangement of the movable groove, the slide groove, the buffer block, the second installation groove, the airbag and the support assembly, the axial impact force on the transmission shaft can be effectively alleviated. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic diagram of the structure of a drive shaft in an embodiment of the present application;

[0044] Figure 2 Based Figure 1 A schematic diagram of the enlarged local structure at center A;

[0045] Figure 3 This is a front view of the installation end of the telescopic sleeve in the embodiment of the present application;

[0046] Figure 4 Based Figure 1 Sectional view at AA;

[0047] Figure 5 Based Figure 1 Enlarged schematic diagram of the local structure at point B in the middle.

[0048] Reference numerals

[0049] 1-transmission shaft tube, 2-spline shaft, 3-telescopic sleeve, 4-universal fork, 5-spline groove, 6-lubrication unit, 7-oil filling channel, 8-shunt channel, 9-sealing cover, 10-oil storage channel, 11-lubrication assembly, 12-oil discharge channel, 13-first mounting groove, 14-ball, 15-connecting rod, 16-fixed block, 17-shock absorption assembly, 18-movable groove, 19-slide groove, 20-buffer block, 21-second mounting groove, 22-airbag, 23-support assembly, 24-support plate, 25-fixed rod, 26-movable block, 27-spring, 28-connecting rod. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0051] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0052] The server provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0053] Embodiment 1:

[0054] like Figures 1 to 4 As shown, an embodiment of the present application provides a drive shaft, including a transmission shaft tube 1, a spline shaft 2, a telescopic sleeve 3 and a universal joint 4, and also includes: a spline groove 5, which is arranged in the telescopic sleeve 3; a lubrication unit 6, which is arranged on the telescopic sleeve 3 and connected to the spline groove 5.

[0055] Furthermore, the lubrication unit 6 includes an oil filling channel 7, which is arranged on the telescopic sleeve 3; a plurality of branch channels 8, which are respectively connected to the oil filling channel 7 and connected to the bottom surface of the spline groove 5; and a sealing cover 9, which is fixedly installed on the oil filling port of the oil filling channel 7.

[0056] Furthermore, it also includes an oil storage channel 10, which is arranged on the spline shaft 2; a plurality of lubrication components 11, which are evenly distributed on the spline shaft 2 and connected to the oil storage channel 10; wherein the oil storage channel 10 corresponds to the position of the middle flow channel 8.

[0057] Furthermore, the lubrication assembly 11 includes a plurality of oil drain passages 12, which are arranged in a circular array on the side walls of the spline shaft 2 and are connected to the oil storage passage 10; a plurality of first mounting grooves 13, which are respectively opened on the bottom surface of the matching groove of the spline shaft 2 and are connected to each oil drain passage 12; and a plurality of balls 14, which are rotatably installed in each first mounting groove 13.

[0058] In this embodiment of the present application, due to the adoption of the above-mentioned structure, when it is necessary to lubricate the connection end of the telescopic sleeve 3 and the spline shaft 2, the sealing cover 9 is opened and the lubricating oil is added, and the lubricating oil enters the oil filling channel 7, and is diverted from the oil filling channel 7 along the three branch channels 8, and the lubricating oil flows from each branch channel 8 into the spline groove 5, effectively lubricating the spline groove 5. In addition, the lubricating oil in the spline groove 5 will flow into the oil storage channel 10 of the spline shaft 2, and the lubricating oil in the oil storage channel 10 will flow along each oil discharge channel 12 respectively, and flow into the matching groove of the spline shaft 2 and the spline groove 5. The ball 14 is rotatably installed at the outer end of the oil discharge channel 12 located at the spline shaft 2, thereby reducing the friction between the spline shaft 2 and the spline groove 5, and improving the service life of the spline shaft 2. In addition, each oil discharge channel 12 is distributed in an annular array, which plays a role in uniform lubrication.

[0059] Embodiment 2:

[0060] like Figure 1 , Figure 5 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, it also includes: a connecting rod 15, which is fixedly connected to the universal joint 4 through a connecting block; a fixing block 16, which is detachably connected to the connecting rod 15 through a fastener; and a shock absorbing assembly 17, which is arranged on the fixing block 16.

[0061] Furthermore, the shock absorbing assembly 17 includes a movable groove 18, which is arranged on the fixed block 16; a slide groove 19, which is arranged on the side wall of the movable groove 18; a buffer block 20, which is slidably installed in the slide groove 19; a second installation groove 21, which is arranged on the buffer block 20; an airbag 22, which is installed in the second installation groove 21; and a support assembly 23, which is installed in the movable groove 18, and the output end is in contact with one side of the airbag 22.

[0062] Furthermore, the support assembly 23 includes a support plate 24, which is movably installed in the second installation groove 21, and one end of which is in contact with one side of the airbag 22; a fixed rod 25, which is arranged in the movable groove 18; a pair of movable blocks 26, which are movably mounted on both ends of the fixed rod 25; a pair of springs 27, which are respectively mounted on the fixed rod 25 and fixedly connected between each movable block 26 and the side wall of the movable groove 18; a pair of connecting rods 28, whose two ends are rotatably connected between each movable block 26 and the support plate 24.

[0063] In this embodiment of the present application, due to the adoption of the above structure, during the driving process of the automobile, the transmission shaft as a whole will be subjected to axial vibration impact force. When it is necessary to relieve the axial impact force at both ends of the transmission shaft, the connecting ends of the universal joints 4 at both ends are provided with shock absorbing components 17. The impact force squeezes the buffer block 20, and the buffer block 20 moves inward along the slide groove 19. At the same time, the support plate 24 moves along the inner side of the second mounting groove 21 to squeeze the airbag 22. One end of a pair of connecting rods 28 outside the support plate 24 rotates outward respectively, and the other end of the pair of connecting rods 28 pushes each moving block 26 to move along both sides of the connecting rod 15. At this time, the springs 27 at both ends are compressed, and the springs 27 support the moving block 26, so that the connecting rod 28 can always support the support plate 24. Under the action of the elastic force of the spring 27 and the elastic force of the airbag 22, the impact force can be buffered, thereby relieving the axial impact force on the transmission shaft as a whole.

[0064] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0065] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A drive shaft, comprising a transmission shaft tube (1), a spline shaft (2), a telescopic sleeve (3) and a universal joint (4), characterized in that: Also includes: A spline groove (5) disposed inside the telescopic sleeve (3); A lubrication unit (6) is arranged on the telescopic sleeve (3) and is connected to the spline groove (5).

2. A drive shaft according to claim 1, characterized in that: The lubrication unit (6) comprises: An oil injection channel (7) arranged on the telescopic sleeve (3); A plurality of branch flow passages (8), which are respectively connected to the oil injection passages (7) and communicated with the bottom surface of the spline groove (5); A sealing cover (9) is fixedly mounted on the oil filling port of the oil filling passage (7).

3. A drive shaft according to claim 2, characterized in that: Also includes: An oil storage channel (10) arranged on the spline shaft (2); A plurality of lubrication components (11) which are evenly distributed on the spline shaft (2) and are connected to the oil storage channel (10); The oil storage channel (10) corresponds to the position of the middle flow channel (8).

4. A drive shaft according to claim 3, characterized in that: The lubrication assembly (11) comprises: A plurality of oil discharge passages (12) are arranged in an annular array on the side wall of the spline shaft (2) and are connected to the oil storage passage (10); A plurality of first installation grooves (13), which are respectively arranged on the bottom surface of the matching groove of the spline shaft (2) and are connected to each oil discharge passage (12); A plurality of balls (14) are rotatably mounted in each of the first mounting grooves (13).

5. A drive shaft according to claim 1, characterized in that: Also includes: A connecting rod (15) fixedly connected to the universal joint (4) via a connecting block; A fixing block (16) detachably connected to the connecting rod (15) via a fastener; A shock absorbing assembly (17) is arranged on the fixing block (16).

6. A drive shaft according to claim 5, characterized in that: The shock absorbing assembly (17) comprises: A movable groove (18) arranged on the fixed block (16); A slide groove (19) arranged on a side wall of the movable groove (18); A buffer block (20) slidably mounted in the slide groove (19); A second mounting groove (21) disposed on the buffer block (20); An air bag (22) installed in the second installation groove (21); A support assembly (23) is installed in the movable groove (18), and an output end thereof is in contact with one side of the air bag (22).

7. A drive shaft according to claim 6, characterized in that: The support assembly (23) comprises: A support plate (24) movably mounted in the second mounting groove (21), with one end thereof being in contact with one side of the airbag (22); A fixed rod (25) disposed in the movable groove (18); A pair of moving blocks (26) are movably mounted on both ends of the fixed rod (25); A pair of springs (27) are respectively sleeved on the fixed rods (25) and fixedly connected between each moving block (26) and the side wall of the movable groove (18); A pair of connecting rods (28) have two ends rotatably connected between each of the moving blocks (26) and the supporting plate (24).

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