Up-down adjusting type automobile steering shaft

Abstract

The utility model relates to an automobile steering shaft, belongs to the technical field of automobile steering shafts, and particularly relates to a vertically adjustable automobile steering shaft which comprises a steering shaft main body, a universal shaft, a first universal joint and a second universal joint, the first universal joint is fixedly mounted on the universal shaft, and the second universal joint is fixedly mounted on the steering shaft main body. The first universal joint and the second universal joint are movably connected, the steering shaft body and the universal shaft are movably connected through the first universal joint and the second universal joint, a telescopic shaft is movably installed in the steering shaft body, a supporting mechanism is arranged in the steering shaft body, and the telescopic shaft is of a hollow structure. The supporting structure comprises a supporting rod, a supporting block, a rotating shaft, a supporting wheel, a mounting seat and a ball; the supporting rod is fixedly mounted in the steering shaft main body; according to the utility model, the length of the steering shaft can be adjusted, and meanwhile, the effect of being smoother during expansion and contraction is also achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile steering shaft, especially an up and down adjustment type automobile steering shaft. BACKGROUND

[0002] The function of the steering shaft body is to transmit the steering torque of the driver to the steering gear, and the upper part of the steering shaft body is fixedly connected with the steering wheel, and the lower part is connected with the steering gear.

[0003] According to the patent with the patent number CN218287869U, a kind of automobile steering shaft, including steering shaft body and universal joint body, the two sides of the inner cavity of steering shaft body near universal joint body one end are all provided with connecting groove, the front and back of the surface of steering shaft body near universal joint body one end are all provided with positioning hole, the side of universal joint body near steering shaft body is fixedly connected with connecting column, the front and back of connecting column are all fixedly connected with connecting block, the inner cavity of connecting column and steering shaft body near universal joint body one end is movably connected.The utility model sets up connecting groove and connecting block, for the limiting of connecting column, avoid the position of connecting column from deviating when displacement, to reduce the movable clearance of connecting column in the inner cavity of steering shaft body, by setting positioning hole and positioning block, for the fixed solution of the connecting column of steering shaft and universal joint welding in one, when maintenance replacement, the whole can be disassembled to carry out maintenance replacement, inconvenient problem is brought to maintenance work.

[0004] Based on the above search and combining the prior art, it is found that:

[0005] In order to improve the use range of steering shaft, the existing steering shaft has telescopic structure, but the existing telescopic structure needs to be lubricated regularly when used, otherwise the friction between the two sections of steering shaft will increase when telescoping, which will cause the steering shaft to be difficult to telescope. UTILITY MODEL CONTENTS

[0006] In order to solve the above technical problems, the utility model provides an up and down adjustment type automobile steering shaft, which can adjust the length of steering shaft and achieve smooth telescoping effect.

[0007] The technical solution for achieving the purpose of the utility model is as follows: an up and down adjustment type automobile steering shaft, including steering shaft body, universal shaft, first universal joint and second universal joint, the first universal joint is fixedly installed on the universal shaft, the second universal joint is fixedly installed on the steering shaft body, the first universal joint and the second universal joint are movably connected, the steering shaft body and the universal shaft are movably connected through the first universal joint and the second universal joint, a telescopic shaft is movably installed in the interior of the steering shaft body, a supporting mechanism is arranged in the interior of the steering shaft body, the telescopic shaft is a hollow structure;

[0008] The support structure comprises a support rod, a support block, a rotating shaft, a support wheel, a mounting seat and a ball, the support rod is fixedly installed in the inside of the steering shaft body and located in the inside of the telescopic shaft, the support block is fixedly installed on the support rod, there are two rotating shafts, the two rotating shafts are movably installed at two ends of the support block, there are four support wheels, the four support wheels are movably sleeved at two ends of the two support blocks, there are four mounting seats, the four mounting seats are fixedly installed at two ends of the two support blocks, there are four balls, the four balls are movably embedded and installed on the four mounting seats, and the steering shaft body is provided with a positioning mechanism.

[0009] In some embodiments, the side walls of the support wheel and the ball are in close contact with the inner wall of the telescopic shaft.

[0010] In some embodiments, the positioning mechanism comprises a positioning groove, a positioning block and an adjusting bolt, there are a plurality of positioning grooves which are evenly distributed on the side wall of the telescopic shaft, the positioning block is movably installed in the inside of the steering shaft body, the adjusting bolt is a threaded cylindrical structure, and the adjusting bolt is movably installed on the steering shaft body.

[0011] In some embodiments, the bottom of the positioning block is located in one of the positioning grooves, and the adjusting bolt is threadedly connected with the positioning block.

[0012] In some embodiments, the second universal joint is fixedly installed with a connecting sleeve, two clamping blocks are fixedly installed in the inside of the connecting sleeve, a clamping groove is formed on the steering shaft body at a position corresponding to the clamping block, and the clamping block is located in the clamping groove.

[0013] In some embodiments, a positioning screw groove is formed in the inside of the clamping groove, the positioning screw groove is a threaded cylindrical groove, two positioning bolts are movably installed on the connecting sleeve, the positioning bolts are located in the inside of the positioning screw groove, and the steering shaft body is fixedly connected with the second universal joint through the connecting sleeve, the clamping block, the clamping groove, the positioning screw groove and the positioning bolts.

[0014] Compared with the prior art, the present utility model has the following advantages:

[0015] The utility model discloses a support mechanism's setting, when needing to adjust the length of the steering shaft main part, telescopic axle will move in the inside of steering shaft main part, and the support wheel is through the pivot swing installation on the support block, and the ball is swing installation through the mounting seat, makes the support wheel and ball can rotate, and the lateral wall of support wheel and ball all is pasted with the inner wall of telescopic axle, when telescopic axle moves, the support wheel and ball will rotate on the inner wall of telescopic axle, when steering shaft main part and telescopic axle are inclined, and the support rod can support telescopic axle, and the support wheel and ball can reduce the friction between telescopic axle when telescopic axle moves, make the adjustment telescopic axle length more smooth, reach adjustable steering axle length simultaneously, still reached more smooth effect when telescoping. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model makes further explanation below combining with the drawing and embodiment:

[0017] Fig. 1 It is the main structure schematic diagram provided in an embodiment of the utility model;

[0018] Fig. 2 It is the whole structure split schematic diagram provided in an embodiment of the utility model;

[0019] Fig. 3 It is the partial structure section view provided in an embodiment of the utility model;

[0020] Fig. 4 It is the support mechanism partial structure schematic diagram provided in an embodiment of the utility model.

[0021] Mark explanation of drawing:

[0022] 1, steering shaft main part;2, universal shaft;3, first universal joint;4, second universal joint;5, connecting sleeve;6, clamping block;7, clamping groove;8, positioning screw groove;9, positioning bolt;10, telescopic axle;11, support rod;12, support block;13, pivot;14, support wheel;15, mounting seat;16, ball;17, positioning groove;18, positioning block;19, adjusting bolt. DETAILED DESCRIPTION

[0023] The utility model makes further explanation below combining with the drawing and embodiment: the technical scheme in the embodiment of the utility model is described clearly and completely, obviously, the described embodiment only is a part of the embodiment of the utility model, is not all the embodiment. Based on the embodiment in the utility model, all other embodiments that the person of ordinary skill in the art obtains without making the creative labor belong to the scope of the utility model protection.

[0024] This utility model provides an improved, height-adjustable automotive steering shaft. The technical solution of this utility model is as follows:

[0025] like Figs. 1 to 4 As shown, a vertically adjustable automotive steering shaft includes a steering shaft body 1, a universal joint 2, a first universal joint 3, and a second universal joint 4. Both the steering shaft body 1 and the universal joint 2 are cylindrical structures. The first universal joint 3 is fixedly installed on the universal joint 2, and the second universal joint 4 is fixedly installed on the steering shaft body 1. The first universal joint 3 and the second universal joint 4 are movably connected. The steering shaft body 1 and the universal joint 2 are movably connected through the first universal joint 3 and the second universal joint 4. A telescopic shaft 10 is movably installed inside the steering shaft body 1. A support mechanism is provided inside the steering shaft body 1. The telescopic shaft 10 is a hollow structure.

[0026] The support structure includes a support rod 11, a support block 12, a rotating shaft 13, a support wheel 14, a mounting base 15, and ball bearings 16. The support rod 11 is a long, rectangular rod, fixedly installed inside the steering shaft body 1 and located inside the telescopic shaft 10. The support block 12 is an elliptical block, fixedly installed on the support rod 11. The rotating shaft 13 is cylindrical; there are two shafts 13, each movably installed at one end of the support block 12. The support wheel 14 is a hollow circular structure; there are four support wheels 14, each movably fitted onto one end of the two support blocks 12. The mounting base 15 is a hollow circular structure; there are four mounting bases 15, each fixedly installed at one end of the two support blocks 12. The ball bearings 16 are spherical structures; there are four ball bearings 16, each movably embedded in one of the four mounting bases 15. The sidewalls of wheel 14 and ball bearing 16 are both in contact with the inner wall of telescopic shaft 10. A positioning mechanism is provided on the steering shaft body 1. With the support mechanism, when the length of the steering shaft body 1 needs to be adjusted, the telescopic shaft 10 will move inside the steering shaft body 1. The support wheel 14 is movably mounted on the support block 12 through the rotating shaft 13, and the ball bearing 16 is movably mounted through the mounting seat 15, so that both the support wheel 14 and the ball bearing 16 can rotate. At the same time, the sidewalls of the support wheel 14 and the ball bearing 16 are in contact with the inner wall of the telescopic shaft 10. When the telescopic shaft 10 moves, the support wheel 14 and the ball bearing 16 will rotate on the inner wall of the telescopic shaft 10. When the steering shaft body 1 and the telescopic shaft 10 are tilted, the support rod 11 can support the telescopic shaft 10. When the telescopic shaft 10 moves, the support wheel 14 and the ball bearing 16 can reduce the friction between themselves and the telescopic shaft 10 while supporting the telescopic shaft 10, making the adjustment of the length of the telescopic shaft 10 smoother.

[0027] The positioning mechanism comprises positioning grooves 17, a positioning block 18 and an adjusting bolt 19, the positioning grooves 17 are circular grooves, a plurality of the positioning grooves 17 are evenly distributed on the side wall of the telescopic shaft 10, the positioning block 18 is a rectangular block, the positioning block 18 is movably installed in the inside of the steering shaft body 1, the bottom of the positioning block 18 is located in the inside of one of the positioning grooves 17, the adjusting bolt 19 is a threaded cylindrical structure, the adjusting bolt 19 is movably installed on the steering shaft body 1 and is in threaded connection with the positioning block 18, through the positioning mechanism, the positioning block 18 located in the inside of the positioning groove 17 can limit the telescopic shaft 10, when the length of the telescopic shaft 10 needs to be adjusted, the adjusting bolt 19 can be rotated, the adjusting bolt 19 can drive the positioning block 18 to move, when the positioning block 18 moves out of the inside of the positioning groove 17, the length of the telescopic shaft 10 can be adjusted, then the adjusting bolt 19 can be rotated again, the adjusting bolt 19 drives the positioning block 18 to move into the corresponding positioning groove 17, thereby the telescopic shaft 10 can be fixed.

[0028] The connecting sleeve 5 is fixedly installed on the second universal joint 4, the connecting sleeve 5 is a hollow cylindrical structure, two clamping blocks 6 are fixedly installed in the inside of the connecting sleeve 5, the clamping blocks 6 are rectangular strips, clamping grooves 7 are formed in the positions corresponding to the clamping blocks 6 on the steering shaft body 1, the clamping grooves 7 are rectangular grooves, the clamping blocks 6 are located in the inside of the clamping grooves 7, positioning screw grooves 8 are formed in the inside of the clamping grooves 7, the positioning screw grooves 8 are threaded cylindrical grooves, two positioning bolts 9 are movably installed on the connecting sleeve 5 and are located in the inside of the positioning screw grooves 8, the steering shaft body 1 is fixedly connected with the second universal joint 4 through the connecting sleeve 5, the clamping blocks 6, the clamping grooves 7, the positioning screw grooves 8 and the positioning bolts 9, thereby the steering shaft body 1 and the connecting sleeve 5 can be disassembled, the positioning bolts 9 are taken out from the inside of the positioning screw grooves 8, at this time, the steering shaft body 1 can be moved in parallel, the steering shaft body 1 can be moved out of the inside of the connecting sleeve 5, thereby the steering shaft body 1 can be conveniently maintained and replaced, and meanwhile, the transmission effect of the steering shaft body 1 is unchanged.

[0029] The specific working method is as follows:

[0030] When the length of the steering shaft body 1 needs to be adjusted, the telescopic shaft 10 moves inside the steering shaft body 1, the supporting wheel 14 is movably installed on the supporting block 12 through the rotating shaft 13, and the ball 16 is movably installed through the mounting seat 15, so that the supporting wheel 14 and the ball 16 can rotate, and the side walls of the supporting wheel 14 and the ball 16 are attached to the inner wall of the telescopic shaft 10, when the telescopic shaft 10 moves, the supporting wheel 14 and the ball 16 rotate on the inner wall of the telescopic shaft 10, when the steering shaft body 1 and the telescopic shaft 10 are inclined, the supporting rod 11 can support the telescopic shaft 10, when the telescopic shaft 10 moves, the supporting wheel 14 and the ball 16 can reduce the friction between the telescopic shaft 10 while supporting the telescopic shaft 10, so that the length of the telescopic shaft 10 is more smooth when being adjusted.

[0031] The technical means disclosed by the utility model scheme are not limited to the technical means disclosed by the above technical means, and also include technical solutions composed of equivalent replacement of the above technical features. The unfinished matters of the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A vertically adjustable automobile steering shaft, comprising a steering shaft body (1), a universal shaft (2), a first universal joint (3) and a second universal joint (4), the first universal joint (3) being fixedly installed on the universal shaft (2), the second universal joint (4) being fixedly installed on the steering shaft body (1), characterized in that: The first universal joint (3) and the second universal joint (4) are movably connected, the steering shaft body (1) and the universal shaft (2) are movably connected through the first universal joint (3) and the second universal joint (4), the inside of the steering shaft body (1) movably installs the telescopic shaft (10), the inside of the steering shaft body (1) is provided with a supporting mechanism, and the telescopic shaft (10) is a hollow structure. The supporting mechanism comprises a supporting rod (11), a supporting block (12), a rotating shaft (13), a supporting wheel (14), a mounting seat (15) and a ball (16), the supporting rod (11) is fixedly installed in the inside of the steering shaft body (1), and the supporting rod (11) is located in the inside of the telescopic shaft (10), the supporting block (12) is fixedly installed on the supporting rod (11), there are two rotating shafts (13), the two rotating shafts (13) are movably installed at two ends of the supporting block (12), there are four supporting wheels (14), the four supporting wheels (14) are movably sleeved at two ends of the two supporting blocks (12), there are four mounting seats (15), the four mounting seats (15) are fixedly installed at two ends of the two supporting blocks (12), there are four balls (16), the four balls (16) are movably embedded on the four mounting seats (15), and the steering shaft body (1) is provided with a positioning mechanism.

2. The up and down adjustable steering shaft of claim 1, wherein: The side walls of the supporting wheel (14) and the ball (16) are attached to the inner wall of the telescopic shaft (10).

3. The up and down adjustable steering shaft of claim 1, wherein: The positioning mechanism comprises a positioning groove (17), a positioning block (18) and an adjusting bolt (19), there are a plurality of positioning grooves (17), the plurality of positioning grooves (17) are evenly distributed on the side wall of the telescopic shaft (10), the positioning block (18) is movably installed in the inside of the steering shaft body (1), the adjusting bolt (19) is a threaded cylindrical structure, and the adjusting bolt (19) is movably installed on the steering shaft body (1).

4. The up and down adjustable steering shaft of claim 3, wherein: The bottom of the positioning block (18) is located in the inside of one of the positioning grooves (17), and the adjusting bolt (19) is in threaded connection with the positioning block (18).

5. The up and down adjustable steering column of claim 1 wherein: The second universal joint (4) is fixedly installed with a connecting sleeve (5), the inside of the connecting sleeve (5) is fixedly installed with two clamping blocks (6), the steering shaft body (1) is provided with a clamping groove (7) at a position corresponding to the clamping block (6), and the clamping block (6) is located in the inside of the clamping groove (7).

6. The up and down adjustable steering column of claim 5 wherein: The inside of the clamping groove (7) is provided with a positioning screw groove (8), the positioning screw groove (8) is a threaded cylindrical groove, two positioning bolts (9) are movably installed on the connecting sleeve (5), the positioning bolts (9) are located in the inside of the positioning screw groove (8), and the steering shaft body (1) is fixedly connected with the second universal joint (4) through the connecting sleeve (5), the clamping block (6), the clamping groove (7), the positioning screw groove (8) and the positioning bolt (9).

Images