CN219989318U - Steering column with axial limiting adjustment function - Google Patents
Steering column with axial limiting adjustment function Download PDFInfo
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- CN219989318U CN219989318U CN202321444657.8U CN202321444657U CN219989318U CN 219989318 U CN219989318 U CN 219989318U CN 202321444657 U CN202321444657 U CN 202321444657U CN 219989318 U CN219989318 U CN 219989318U
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- column tube
- limiting block
- limiting
- spline
- locking
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- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000033001 locomotion Effects 0.000 abstract description 25
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 6
- 230000000903 blocking effect Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Abstract
The utility model relates to a steering column, in particular to a steering column with axial limiting adjustment. The steering column comprises a lower column pipe and an upper column pipe, wherein the end head of one end of the lower column pipe is inserted with the upper column pipe, and the end head of the upper column pipe at the outer side of the lower column pipe is provided with a spline housing; the other end head of the lower column tube is provided with a spline shaft; the end of the lower column tube is provided with a locking mechanism, and the locking mechanism comprises a locking shaft; an upper limiting block is arranged on the locking shaft, and a limiting baffle is arranged above the upper limiting block; the lower column pipe is provided with a limiting chute, and the upper column pipe at the inner side of the limiting chute is fixedly provided with a lower limiting block through rivets. The steering column can limit the downward movement of the upper column pipe through the cooperation of the upper limiting block and the limiting baffle plate, and can limit the upward movement of the upper column pipe through the cooperation of the lower limiting block and the limiting chute, so that the movement of the upper column pipe can be limited in a range in which the spline is not easy to separate, and the normal transmission can be effectively ensured; the problem that normal transmission cannot be caused easily in the existing steering column adjusting process is solved.
Description
Technical Field
The utility model relates to a steering column, in particular to a steering column with axial limiting adjustment.
Background
The steering column is a middle part for connecting the steering wheel and the steering gear, and has the functions of adjusting the angle and the height of the steering wheel and passively collapsing and protecting during accident.
Patent application publication No. CN104487315a discloses a steering column device provided with: a first bracket that supports a steering column that rotatably supports a steering shaft; a second bracket coupled to the first bracket and assembled to the vehicle body, thereby fixing the steering column to the vehicle body; and a disengagement mechanism portion provided in the second bracket and configured to allow the steering column to disengage axially forward of the column tube with respect to the vehicle body by a set load at the time of a secondary collision of a vehicle collision. In this steering column device, the first bracket, the second bracket, the release mechanism portion, and the like are integrated in a state before being assembled to the vehicle body. The first bracket and the second bracket are connected to each other via a connecting mechanism section so as to be rotatable relative to each other, and a rotation center of the relative rotation intersects with an axial center of the steering shaft. When an external force exceeding a predetermined value acts on the disengagement mechanism portion in the column tube axial direction in a state before the first bracket, the second bracket, the disengagement mechanism portion, and the like are assembled to the vehicle body, the relative rotation of the first bracket and the second bracket is permitted by the coupling mechanism portion.
In the prior art, the lower tube and the upper shaft of the steering column device can slide relatively, and the height of the steering wheel is adjusted by adjusting the distance between the lower tube and the end of the upper shaft. However, in the prior art, the adjustment between the lower tube and the upper shaft is not limited, and the spline between the lower tube and the upper shaft is easily disengaged when the adjustment is excessive, so that the transmission between the lower tube and the upper shaft cannot be normally performed. There is therefore a need for improvements to solve the above problems.
Disclosure of Invention
The utility model aims at: aiming at the defects of the prior art, the axial limiting adjustment steering column is provided, which can be adjusted and ensure normal transmission, so as to solve the problem that the normal transmission cannot be easily caused in the existing steering column adjustment process.
The technical scheme of the utility model is as follows:
the steering column comprises a lower column pipe, an upper column pipe, a spline sleeve and a spline shaft, wherein the upper column pipe is inserted into one end head of the lower column pipe, the end head of the upper column pipe extends to the outer side of the lower column pipe, and the spline sleeve is movably arranged at the end head of the upper column pipe extending to the outer side of the lower column pipe through a bearing; the other end head of the lower column tube is movably provided with a spline shaft through a bearing, and the spline shaft is connected with a spline sleeve through a spline;
the end head of the lower column tube at one end of the upper column tube is provided with a locking mechanism for locking the positions of the upper column tube and the lower column tube;
the locking mechanism comprises a locking shaft, a handle and a cam;
the method is characterized in that:
an upper limiting block is arranged in the middle of the locking shaft, and a limiting baffle is arranged on an upper column tube above the upper limiting block; the lower column pipe is provided with a limiting chute, the upper column pipe at the inner side of the limiting chute is fixedly provided with a lower limiting block through a rivet, and the lower limiting block penetrates through the limiting chute and extends to the outer side of the lower column pipe.
And an avoidance groove is formed in the upper column tube at the inner side of the limiting baffle plate.
And a support lug is arranged on the lower limiting block at the outer side of the lower column tube.
The upper limiting block is provided with a connecting through hole, and is connected with the locking shaft sleeve through the connecting through hole.
The middle part of locking axle be provided with the external tooth, be provided with the internal tooth on the inner wall of connecting the through-hole, internal tooth and outside meshing.
The top end face of the upper limiting block is arc-shaped, an elastic groove is formed in the top end face of the upper limiting block, and the upper limiting blocks on two sides of the elastic groove are fixedly connected through locking screws.
The utility model has the beneficial effects that:
the steering column with the axial limiting adjustment can limit the downward movement of the upper column pipe through the upper limiting block matched with the limiting baffle plate, and can limit the upward movement of the upper column pipe through the lower limiting block matched with the limiting chute, so that the movement of the upper column pipe can be limited in a range in which the spline is not easy to separate, and the normal transmission can be effectively ensured; the locking shaft can drive the upper limiting block to rotate, so that the upper limiting block can perform state transition, can limit during adjustment, and can be convenient to collapse during locking; the problem that normal transmission cannot be caused easily in the existing steering column adjusting process is solved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
FIG. 3 is a schematic view of the structure in the direction B-B in FIG. 1;
FIG. 4 is an enlarged schematic view at C in FIG. 3;
FIG. 5 is a schematic view of the upper stopper in the locked position of the present utility model;
FIG. 6 is a schematic view of the upper limit block in the limit state of the present utility model.
In the figure: 1. the lower column tube, 2, the upper column tube, 3, the spline housing, 4, the spline shaft, 5, the locking shaft, 6, the handle, 7, the upper limiting block, 8, the limiting baffle, 9, the limiting chute, 10, the rivet, 11, the lower limiting block, 12, the avoiding groove, 13, the support lug, 14, the connecting through hole, 15, the elastic groove, 16 and the locking screw.
Detailed Description
The steering column with axial limiting adjustment comprises a lower column tube 1, an upper column tube 2, a spline sleeve 3 and a spline shaft 4, wherein the upper column tube 2 is inserted into one end of the lower column tube 1, and the upper column tube 2 can slide relative to the lower column tube 1. The end head of the upper column tube 2 extends to the outer side of the lower column tube 1, and the end head of the upper column tube 2 extending to the outer side of the lower column tube 1 is movably provided with a spline housing 3 through a bearing; the other end head of the lower column tube 1 is movably provided with a spline shaft 4 through a bearing, and the spline shaft 4 is connected with a spline sleeve 3 through a spline; the spline housing 3 can drive the spline shaft 4 to rotate through the spline when rotating, and the spline housing 3 is connected with the steering wheel, and the spline shaft 4 is connected with the steering gear, so that when the steering wheel rotates, the steering gear is driven to act through the spline housing 3, the spline and the spline shaft 4 in sequence, and steering is completed.
The end head of the lower column tube 1 at one end of the upper column tube 2 is provided with a locking mechanism for locking the positions of the upper column tube 2 and the lower column tube 1. The locking mechanism comprises a locking shaft 5, a handle 6 and cams, wherein the end head of one end of the locking shaft 5 is provided with the handle 6, the locking shaft on the inner side of the handle 6 is provided with a pair of cams, the cams on one side of the handle 6 are fixedly connected with the locking shaft 5, and the cams on one side of the lower column tube 1 are fixedly connected with the lower column tube 1; the other end of the locking shaft 5 is provided with a locking flange which is in abutting connection with the lower column tube 1. The locking shaft 5 has the function of driving the cam on one side of the handle 6 to rotate when the locking shaft 5 rotates, and the end head of the lower column tube 1 is extruded through the action between the cams, so that the lower column tube 1 and the upper column tube 2 are locked.
The middle part of locking shaft 5 is provided with stopper 7, is provided with spacing separation blade 8 on the last column tube 2 of last stopper 7 top, and the effect of last stopper 7 relies on locking shaft 5 to stop spacing separation blade 8's motion to block the motion of last column tube 2, avoid going up column tube 2 and drive spline housing 3 excessive along axial downward movement, make the spline between spline housing 3 and the spline shaft 4 be difficult for breaking away from because of the downward movement, guarantee the normal transmission between spline housing 3 and the spline shaft 4 from this. The lower column tube 1 is provided with a limiting chute 9, the upper column tube 2 at the inner side of the limiting chute 9 is fixedly provided with a lower limiting block 11 through a rivet 10, and the lower limiting block 11 penetrates through the limiting chute 9 to extend to the outer side of the lower column tube 1. The lower limiting block 11 has the function that in the process that the limiting chute 9 blocks the upward movement of the lower limiting block 11, the lower limiting block 11 is fixedly connected with the upper column tube 2, so that the upward movement of the upper column tube 2 is blocked, and a spline between the spline housing 3 and the spline shaft 4 is not easy to separate due to the upward movement in the process that the upper column tube 2 drives the spline housing 3 to move upward, thereby ensuring the normal transmission between the spline housing 3 and the spline shaft 4; the upward movement of the upper column tube 2 is limited by the limiting chute 9 and the lower limiting block 11, and the downward movement of the upper column tube 2 is limited by the upper limiting block 7 and the limiting baffle 8, so that the movement of the upper column tube 2 is limited in a range in which the spline between the spline housing 3 and the spline shaft 4 is not easy to separate, the spline between the spline housing 3 and the spline shaft 4 is always meshed, and therefore the normal transmission between the spline housing 3 and the spline shaft 4 is ensured. The reason why the lower limiting block 11 is not matched with the limiting chute 9 to limit the downward movement of the upper column tube 2 is that the downward collapsing stroke of the lower limiting block 11 in the limiting chute 9 can be prolonged by prolonging the downward stroke of the lower limiting block, so that the safety is effectively ensured.
The upper column tube 2 on the inner side of the limiting baffle piece 8 is provided with the avoiding groove 12, so that the limiting baffle piece 8 can collapse into the avoiding groove 12 when the steering column is impacted by external force through the avoiding groove 12, and further the limiting baffle piece 8 is not easy to block the movement of the upper column tube 2 relative to the lower column tube 1, and the upper column tube 2 can collapse into the lower column tube 1.
The lower limiting block 11 on the outer side of the lower column tube 1 is provided with a supporting lug 13, so that the handle for pushing the upper column tube 2 to move or the power-assisted adjusting electric cylinder is connected through the supporting lug 13, and the upper column tube 2 is pushed to move through the handle or the power-assisted adjusting electric cylinder, and the height of the steering wheel is adjusted.
The upper limiting block 7 is provided with a connecting through hole 14, and the upper limiting block 7 is sleeved and connected with the locking shaft 5 through the connecting through hole 14. The middle part of the locking shaft 5 is provided with external teeth, the inner wall of the connecting through hole 14 is provided with internal teeth, and the internal teeth are meshed with the outer side. The locking shaft 5 can drive the lower limiting block 11 to rotate through the cooperation of the external teeth and the internal teeth when rotating, so that the upper limiting block 7 can be switched between a state of limiting the limiting blocking piece 8 and a state of not limiting the limiting blocking piece 8, and when the locking shaft 5 locks the lower column tube 1 and the upper column tube 2, the locking shaft 5 drives the upper limiting block 7 to rotate to a state of not limiting the limiting blocking piece 8, and therefore the movement of the upper column tube 2 cannot be limited through the upper limiting block 7 and the limiting blocking piece 8, and the upper column tube 2 can normally collapse into the lower column tube 1; the locking shaft 5 loosens the lower column tube 1 and the upper column tube 2, when the upper column tube 2 can be adjusted relative to the lower column tube 1, the locking shaft 5 drives the upper limiting block 7 to rotate to a state capable of limiting the limiting blocking piece 8, so that the upper column tube 2 can be limited to move through the upper limiting block 7 and the limiting blocking piece 8, the upper column tube 2 is limited in downward adjustment, and the upper column tube 2 is prevented from driving the spline housing 3 to be excessively adjusted downward.
The top end face of the upper limiting block 7 is arc-shaped, and the purpose of the upper limiting block 7 is that when the upper limiting block 7 acts on the limiting baffle 8, the upper limiting block 7 can slide with the limiting baffle 8 under the action of the arc face at the top of the upper limiting block 7, so that the upper limiting block 7 deflects, the upper limiting block 7 drives the locking shaft 5 to rotate, the upper column pipe 2 and the lower column pipe 1 are locked, the upper column pipe 2 and the lower column pipe 1 cannot slide relatively, and further adjustment is prevented.
An elastic groove 15 is formed in the top end face of the upper limiting block 7, and the upper limiting blocks 7 on two sides of the elastic groove 15 are fixedly connected through locking screws 16. The function of the elastic groove 15 is that when the limiting block 7 is installed, the connecting through hole 14 can be loosened through the elastic groove 15, so that the installation is convenient; after the installation of the upper limiting block 7 is completed, the upper limiting block 7 can be locked on the locking shaft 5 through tightening of the elastic groove 15, and the upper limiting block 7 is fixed.
When the steering column regulated by the axial limiting regulation is regulated, the locking shaft 5 is rotated by the handle 6, and the locking of the upper column tube 2 and the lower column tube 1 is released. When the locking shaft 5 is rotated, the locking shaft 5 drives the upper limiting block 7 to deflect towards the limiting baffle 8, so that the upper limiting block 7 is matched with the limiting baffle 8 to limit the downward movement of the upper column tube 2, and accordingly the upward movement of the upper column tube 2 is limited through the limiting chute 9 and the lower limiting block 11 and the downward movement of the upper column tube 2 is limited through the upper limiting block 7 and the limiting baffle 8, and the upper column tube 2 can be adjusted only in a limiting range.
After the adjustment is completed, the locking shaft 5 is rotated by the handle 6 to lock the upper column tube 2 and the lower column tube 1. When the upper column tube 2 and the lower column tube 1 are locked, the locking shaft 5 drives the upper limiting block 7 to deflect outwards, so that the upper limiting block 7 can not block the upper column tube 2 from collapsing downwards.
The steering column with the axial limiting adjustment can limit the downward movement of the upper column tube 2 through the upper limiting block 7 matched with the limiting baffle piece 8, and can limit the upward movement of the upper column tube 2 through the lower limiting block 11 matched with the limiting chute 9, so that the movement of the upper column tube 2 can be limited in a range in which a spline is not easy to separate, and normal transmission can be effectively ensured; the locking shaft 5 can drive the upper limiting block 7 to rotate, so that the upper limiting block 7 can perform state transition, can limit during adjustment, and can be convenient to collapse during locking; the problem that normal transmission cannot be caused easily in the existing steering column adjusting process is solved.
Claims (6)
1. The steering column comprises a lower column tube (1), an upper column tube (2), a spline sleeve (3) and a spline shaft (4), wherein the upper column tube (2) is inserted into one end head of the lower column tube (1), the end head of the upper column tube (2) extends to the outer side of the lower column tube (1), and the spline sleeve (3) is movably arranged at the end head of the upper column tube (2) extending to the outer side of the lower column tube (1) through a bearing; the other end head of the lower column tube (1) is movably provided with a spline shaft (4) through a bearing, and the spline shaft (4) is connected with a spline sleeve (3) through a spline;
the end head of the lower column tube (1) at one end of the upper column tube (2) is provided with a locking mechanism for locking the positions of the upper column tube (2) and the lower column tube (1);
the locking mechanism comprises a locking shaft (5), a handle (6) and a cam;
the method is characterized in that:
an upper limit block (7) is arranged in the middle of the locking shaft (5), and a limit baffle (8) is arranged on the upper column tube (2) above the upper limit block (7); be provided with spacing spout (9) on lower column tube (1), be provided with lower stopper (11) through rivet (10) fixed mounting on last column tube (2) of spacing spout (9) inboard, lower stopper (11) pass spacing spout (9) and extend to lower column tube (1) outside.
2. An axially limited adjustment steering column according to claim 1, wherein: an avoidance groove (12) is formed in the upper column tube (2) at the inner side of the limiting baffle plate (8).
3. An axially limited adjustment steering column according to claim 1, wherein: a support lug (13) is arranged on a lower limiting block (11) at the outer side of the lower column tube (1).
4. An axially limited adjustment steering column according to claim 1, wherein: the upper limiting block (7) is provided with a connecting through hole (14), and the upper limiting block (7) is connected with the locking shaft (5) in a sleeved mode through the connecting through hole (14).
5. An axially limited adjustment steering column according to claim 4, wherein: the middle part of the locking shaft (5) is provided with external teeth, the inner wall of the connecting through hole (14) is provided with internal teeth, and the internal teeth are meshed with the outer side.
6. An axially limited adjustment steering column according to claim 4, wherein: the top end surface of the upper limiting block (7) is arc-shaped, an elastic groove (15) is formed in the top end surface of the upper limiting block (7), and the upper limiting blocks (7) on two sides of the elastic groove (15) are fixedly connected through locking screws (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321444657.8U CN219989318U (en) | 2023-06-08 | 2023-06-08 | Steering column with axial limiting adjustment function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321444657.8U CN219989318U (en) | 2023-06-08 | 2023-06-08 | Steering column with axial limiting adjustment function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219989318U true CN219989318U (en) | 2023-11-10 |
Family
ID=88608467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321444657.8U Active CN219989318U (en) | 2023-06-08 | 2023-06-08 | Steering column with axial limiting adjustment function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219989318U (en) |
-
2023
- 2023-06-08 CN CN202321444657.8U patent/CN219989318U/en active Active
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