CN109866818B - Steering column's direction structure of crumpling - Google Patents
Steering column's direction structure of crumpling Download PDFInfo
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- CN109866818B CN109866818B CN201910231791.1A CN201910231791A CN109866818B CN 109866818 B CN109866818 B CN 109866818B CN 201910231791 A CN201910231791 A CN 201910231791A CN 109866818 B CN109866818 B CN 109866818B
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Abstract
The invention relates to a guide crumple structure of a steering column, which comprises a guide crumple body fixedly connected to the steering column, and is characterized in that: the guide crumple body comprises an upper rolling friction mechanism and a lower rolling friction mechanism, wherein the upper rolling friction mechanism is overlapped on the lower rolling friction mechanism and is connected together through a connecting component. The invention can effectively improve the unstable situation of the collapse force caused by surface-to-surface contact of the existing pipe column, increase the stability of the collapse force of the steering pipe column and improve the safety and the reliability of the steering pipe column.
Description
Technical Field
The invention relates to an automobile steering system, in particular to a guide collapse structure of a steering column.
Background
The steering column of the automobile is an important automobile passive safety component besides having a steering function. The steering column with the collapsing function can effectively increase the movement space of the human body in the passenger compartment when a collision accident happens; meanwhile, the stable and good collapse performance is also beneficial to improving the distribution condition of the damage force of the steering column to the driver, and the damage of collision accidents to the driver is reduced. Because collision accidents are random and various, the collapse performance of the steering column with the same structural form is different in different collisions. Therefore, in order to reduce the damage of the steering column to the human body, in addition to the collapsing function of the column, the stability of the collapsing force is also critical.
In the development process of the conventional automobile passive safety component, the collapse energy absorption condition of a steering column is considered to different degrees. "a steering column safety protection mechanism" as disclosed in CN 202716925U, including fixed bolster, sliding support and buffer gear, the fixed bolster fixed mounting is on the automobile body, sliding support fixed mounting is on the tubular column, link to each other through buffer gear between fixed bolster and the sliding support. The utility model discloses steering column bursts to contract direction energy-absorbing mechanism passes through the frictional force between friction disc and the fixed bolster, under the prerequisite that does not greatly increase spare part cost, realize steering column's the bursting of contracting, the direction, the triple effect of energy-absorbing, the clamp force through adjusting bolt can comparatively simple and easy realization ability of absorbing's regulation simultaneously, set for the target value of absorption striking energy, can effectively exert steering column's energy-absorbing ability, guarantee that vehicle collision energy-absorbing reaches anticipated effect, fall vehicle collision to driver's injury to minimum. Still like "a vehicle steering column crumple structure and vehicle" that CN 207257760U disclosed, vehicle steering column crumple structure includes mutual interference fit's last inner tube and lower outer tube, is provided with along axial extension and both ends confined crumple groove on one of last inner tube and lower outer tube, is provided with on the other and follows the extending direction is movably to be inserted the piece that crumples in the crumple groove to in-process that relative movement takes place for last inner tube and lower outer tube, the piece that crumples can be cut through the backstop of crumple groove tip. When the automobile is in collision in a use state, the upper inner tube is effectively prevented from falling off from the lower outer tube through the split structure of the upper inner tube and the lower outer tube, driving safety is improved, the crumple piece can be sheared to realize crumple when moving to the end part of the crumple slot along the extending direction through the guide of the crumple slot, torsional deformation of the upper inner tube relative to the lower outer tube is effectively avoided, the upper inner tube moves relative to the lower outer tube after the crumple piece is sheared to further crumple, and therefore crumple stability can be effectively improved.
The above prior art is a useful attempt in the art.
Disclosure of Invention
The invention aims to provide a guide collapse structure of a steering column, which can effectively improve the unstable collapse force caused by surface-to-surface contact of the existing column, increase the stability of the collapse force of the steering column and improve the safety and reliability of the steering column.
The invention relates to a guide crumple structure of a steering column, which comprises a guide crumple body fixedly connected to the steering column, and is characterized in that: the guide crumple body comprises an upper rolling friction mechanism and a lower rolling friction mechanism, wherein the upper rolling friction mechanism is overlapped on the lower rolling friction mechanism and is connected together through a connecting component.
Further, the upper rolling friction mechanism comprises a clamping block, an upper fixed bracket and an upper clamping separation blade positioned between the clamping block and the upper fixed bracket;
the center part of the clamping block is provided with a first through hole, four corners of the clamping block are respectively provided with an upper pin hole, and the lower part of the clamping block, which is close to the four upper pin holes, is respectively provided with an upper counter bore;
a second through hole corresponding to the first through hole is formed in the center of the upper clamping separation blade, an upper injection molding pin correspondingly matched with the upper pin hole is respectively arranged at four corners of the upper clamping separation blade, and an upper through hole corresponding to the upper counter bore is respectively formed in the position close to the four upper injection molding pins;
a strip-shaped guide groove corresponding to the second through hole is formed in the middle of the upper fixing support, and an upper rolling groove corresponding to the upper through hole is formed in the upper surface of the upper fixing support and close to two sides of the strip-shaped guide groove;
the four upper balls are respectively clamped between the four upper counter bores of the clamping block and the two upper rolling grooves of the upper fixed support to form an upper rolling friction mechanism.
Further, the lower rolling friction mechanism comprises an upper fixed support, a lower fixed support and a lower clamping separation blade positioned between the upper fixed support and the lower fixed support;
two lower rolling grooves are respectively formed in the lower surface of the upper fixing support and close to the two sides of the strip-shaped guide groove;
a fourth through hole corresponding to the strip-shaped guide groove is formed in the central part of the lower clamping separation blade, a lower injection molding pin is arranged at each of four corners, and a lower through hole is formed in a position close to each of the four lower injection molding pins;
a fifth through hole corresponding to the fourth through hole is formed in the center of the lower fixing support, a lower pin hole correspondingly matched with the four lower injection molding pins is formed in each of four corners of the lower fixing support, and a lower counter bore is formed in the position close to the four lower pin holes;
the four lower ball bearings are respectively clamped between four lower counter bores of the lower fixing support and two lower rolling grooves below the upper fixing support to form a lower rolling friction mechanism.
Further, the connecting component comprises a rivet and a gasket matched with the rivet, and the rivet sequentially penetrates through a first via hole in the clamping block, a second via hole in the upper clamping blocking piece, a strip-shaped guide groove in the upper fixing support, a fourth via hole in the lower clamping blocking piece and a fifth via hole in the lower fixing support to fix the upper rolling friction mechanism on the lower rolling friction mechanism.
Furthermore, the upper fixing support is fixedly connected to the steering support, and the lower fixing support is fixedly connected to the steering column.
Compared with the prior art, the invention has the following advantages: because the sliding friction between the surfaces in the prior art is changed into rolling friction, the collapse resistance is greatly reduced, the collapse force at the position is reduced to a very small range, and the influence degree on the collapse force of the whole pipe column in the structural design at the position is also reduced. So that the collapse of the pipe column is easier and the stability is better.
Drawings
FIG. 1 is a schematic illustration of the present invention mounted on a steering column;
FIG. 2 is an isometric view of the present invention;
FIG. 3 is an exploded schematic view of the present invention;
FIG. 4 is a schematic view of a clamping block;
FIG. 5 is a schematic structural view of an upper fixing bracket;
FIG. 6 is a schematic structural view of the present invention;
FIG. 7 is a sectional view A-A of FIG. 6;
fig. 8 is a sectional view B-B of fig. 6.
In the figure: 1-a clamping block, 10-a first through hole, 11-an upper counter bore, 12-an upper pin hole;
2, clamping a block piece of the clamping block, 20, a second through hole, 21, an upper through hole and 22, and an upper injection molding pin;
3-upper fixed support, 30-bar guide groove, 31-upper rolling groove, 32-lower rolling groove;
4-lower clamping stop piece, 40-fourth through hole, 41-lower through hole, 42-lower injection pin;
5-lower fixed support, 50-fifth via hole, 51-sunken hole, 52-lower pin hole;
6-rivet, 7-washer, 8-upper ball, 9-lower ball;
90-guide collapse body, 100-steering column.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 8, a steering column guide crush structure includes a guide crush body 90 fixedly connected to a steering column 100, and is characterized in that: the guided collapsing body 90 includes an upper rolling friction mechanism and a lower rolling friction mechanism, the upper rolling friction mechanism is overlapped on the lower rolling friction mechanism and is connected together by a connecting member.
The upper rolling friction mechanism comprises a clamping block 1, an upper fixed bracket 3 and an upper clamping separation blade 2 positioned between the clamping block and the upper fixed bracket;
a first through hole 10 is formed in the center of the clamping block 1, an upper pin hole 12 is formed in each of four corners of the clamping block, and an upper counter bore 11 is formed in the lower surface of the clamping block 1, which is close to the four upper pin holes 12;
a second through hole 20 corresponding to the first through hole 10 is formed in the center of the upper clamping separation blade 2, an upper injection molding pin 22 correspondingly matched with the upper pin hole 12 is respectively arranged at four corners, and an upper through hole 21 corresponding to the upper counter bore 11 is respectively arranged at a position close to the four upper injection molding pins 22;
a strip-shaped guide groove 30 corresponding to the second via hole 20 is formed in the middle of the upper fixing support 3, and an upper rolling groove 31 corresponding to the upper through hole 21 is formed in each of two sides, close to the strip-shaped guide groove 30, of the upper surface of the upper fixing support 3;
the clamping block further comprises four upper balls 8 which are respectively positioned in the four upper through holes 21 of the upper clamping blocking sheet 2, and the four upper balls 8 are respectively clamped between the four upper counter bores 11 of the clamping block 1 and the two upper rolling grooves 31 on the upper surface of the upper fixing support 3 to form an upper rolling friction mechanism. The upper rolling friction mechanism can change surface-to-surface contact between the clamping block and the upper fixing support into free rolling contact between the ball and the upper fixing support. When the pipe column collapses, the upper rolling friction mechanism can realize free sliding in the collapsing process of the steering pipe column.
In order to improve the unstable condition of force brought by surface-to-surface contact between the clamping block and the upper surface of the upper fixing support, four balls are additionally arranged between the clamping block and the upper fixing support and are symmetrically distributed on two sides of the clamping block. The ball is clamped tightly through last centre gripping separation blade, goes up centre gripping separation blade and grip block and realizes fixed connection through four round pins of moulding plastics on. A gap is arranged between the upper clamping separation blade and the upper fixing support, and the upper clamping separation blade and the upper fixing support are not in contact relation. Therefore, the relative movement between the upper clamping separation blade and the upper fixing support can be realized through the rolling of the four balls.
The lower rolling friction mechanism comprises an upper fixed support 3, a lower fixed support 5 and a lower clamping separation blade 4 positioned between the upper fixed support and the lower fixed support;
two lower rolling grooves 32 are respectively arranged at the lower part of the upper fixing bracket 3 close to the two sides of the strip-shaped guide groove 30;
a fourth through hole 40 corresponding to the strip-shaped guide groove 30 is formed in the central part of the lower clamping baffle 4, a lower injection molding pin 42 is respectively arranged at four corners, and a lower through hole 41 is respectively formed at a position close to the four lower injection molding pins 42;
a fifth through hole 50 corresponding to the fourth through hole 40 is formed in the center of the lower fixing bracket 5, a lower pin hole 52 corresponding to the four lower injection pins 42 is formed in each of the four corners, and a lower counter bore 51 is formed in the position close to each of the four lower pin holes 52;
the lower rolling friction mechanism further comprises four lower balls 9 respectively positioned in the four lower through holes 41 of the lower clamping blocking sheet 4, and the four lower balls 9 are respectively clamped between four lower counter bores 51 of the lower fixing support 5 and two lower rolling grooves 32 below the upper fixing support 3 to form a lower rolling friction mechanism. The lower rolling friction mechanism can change surface-to-surface contact between the upper fixing support and the lower fixing support into free rolling contact between the balls and the upper fixing support. When the pipe column collapses, the lower rolling friction mechanism can realize free sliding in the collapsing process of the steering pipe column.
In order to improve the unstable condition of force brought by surface-to-surface contact between the lower surface of the lower fixing support and the lower surface of the upper fixing support, four lower balls are additionally arranged between the lower fixing support and the upper fixing support and are symmetrically distributed on two sides below the upper fixing support. The lower ball is clamped on the upper fixing support through the lower clamping separation blade, and the lower clamping separation blade is fixedly connected with the upper fixing support through four lower injection molding pins. Lower rolling grooves are formed in two sides of the lower surface of the upper fixing support, and the balls roll along the lower rolling grooves when the pipe column contracts. A gap is arranged between the lower clamping separation blade and the lower fixing support, and the lower clamping separation blade and the lower fixing support are not in contact relation. Therefore, the relative movement between the lower clamping blocking sheet and the upper fixing support can be realized through the rolling of the four balls.
The connecting component comprises a rivet 6 and a gasket 7 matched with the rivet, and the rivet 6 sequentially penetrates through a first via hole 10 in the clamping block 1, a second via hole 20 in the upper clamping separation blade 2, a strip-shaped guide groove 30 in the upper fixing support 3, a fourth via hole 40 in the lower clamping separation blade 4 and a fifth via hole 50 in the lower fixing support 5 to fix the upper rolling friction mechanism on the lower rolling friction mechanism.
The upper fixing bracket 3 is fixedly connected to the steering support, and the lower fixing bracket 5 is fixedly connected to the steering column 100.
In the steering column collapse process, the upper rolling friction mechanism freely slides along the upper rolling groove, and the lower rolling friction mechanism freely slides along the lower rolling groove, so that the unstable condition of the collapse force caused by surface-to-surface contact of the existing steering column is effectively improved, and the stability of the collapse force of the steering column is improved.
Claims (4)
1. A steering column guide crush structure includes a guide crush body (90) fixedly connected to a steering column (100), characterized in that: the guide crumple body (90) comprises an upper rolling friction mechanism and a lower rolling friction mechanism, wherein the upper rolling friction mechanism is overlapped on the lower rolling friction mechanism and is connected together through a connecting component;
the upper rolling friction mechanism comprises a clamping block (1), an upper fixed support (3) and an upper clamping baffle plate (2) positioned between the clamping block and the upper fixed support;
a first through hole (10) is formed in the center of the clamping block (1), an upper pin hole (12) is formed in each of four corners of the clamping block, and an upper counter bore (11) is formed in the position, close to the four upper pin holes (12), below the clamping block (1);
a second through hole (20) corresponding to the first through hole (10) is formed in the center of the upper clamping separation blade (2), an upper injection molding pin (22) correspondingly matched with the upper pin hole (12) is respectively arranged at four corners, and an upper through hole (21) corresponding to the upper counter bore (11) is respectively formed in the position close to the four upper injection molding pins (22);
a strip-shaped guide groove (30) corresponding to the second through hole (20) is formed in the middle of the upper fixing support (3), and an upper rolling groove (31) corresponding to the upper through hole (21) is formed in each of two sides, close to the strip-shaped guide groove (30), of the upper surface of the upper fixing support (3);
the clamping block is characterized by further comprising four upper balls (8) which are respectively positioned in four upper through holes (21) of the upper clamping blocking sheet (2), and the four upper balls (8) are respectively clamped between four upper counter bores (11) of the clamping block (1) and two upper rolling grooves (31) of the upper fixing support (3) to form an upper rolling friction mechanism.
2. The steering column guide crush structure of claim 1, wherein: the lower rolling friction mechanism comprises an upper fixed support (3), a lower fixed support (5) and a lower clamping baffle (4) positioned between the upper fixed support and the lower fixed support;
two sides of the lower surface of the upper fixed bracket (3) close to the strip-shaped guide groove (30) are respectively provided with a lower rolling groove (32);
a fourth through hole (40) corresponding to the strip-shaped guide groove (30) is formed in the center of the lower clamping baffle (4), a lower injection molding pin (42) is arranged at each of four corners, and a lower through hole (41) is formed in a position close to each of the four lower injection molding pins (42);
a fifth through hole (50) corresponding to the fourth through hole (40) is formed in the center of the lower fixing support (5), a lower pin hole (52) correspondingly matched with the four lower injection molding pins (42) is formed in each of four corners of the lower fixing support, and a lower counter bore (51) is formed in the position close to the four lower pin holes (52);
the lower rolling friction mechanism is characterized by further comprising four lower balls (9) which are respectively positioned in the four lower through holes (41) of the lower clamping blocking sheet (4), and the four lower balls (9) are respectively clamped between four lower counter bores (51) of the lower fixing support (5) and two lower rolling grooves (32) below the upper fixing support (3) to form a lower rolling friction mechanism.
3. The steering column guide crush structure of claim 2, wherein: the connecting component comprises a rivet (6) and a gasket (7) matched with the rivet, the rivet (6) sequentially penetrates through a first through hole (10) in the clamping block (1), a second through hole (20) in the upper clamping separation blade (2), a strip-shaped guide groove (30) in the upper fixing support (3), a fourth through hole (40) in the lower clamping separation blade (4) and a fifth through hole (50) in the lower fixing support (5) to fix the upper rolling friction mechanism on the lower rolling friction mechanism.
4. The steering column guide crush structure of claim 2, wherein: the upper fixing support (3) is fixedly connected to the steering support, and the lower fixing support (5) is fixedly connected to the steering column (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910231791.1A CN109866818B (en) | 2019-03-26 | 2019-03-26 | Steering column's direction structure of crumpling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910231791.1A CN109866818B (en) | 2019-03-26 | 2019-03-26 | Steering column's direction structure of crumpling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109866818A CN109866818A (en) | 2019-06-11 |
| CN109866818B true CN109866818B (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910231791.1A Active CN109866818B (en) | 2019-03-26 | 2019-03-26 | Steering column's direction structure of crumpling |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160074755A (en) * | 2014-12-18 | 2016-06-29 | 주식회사 만도 | Rack Assist Type Electric Power Steering Apparatus |
| CN206528516U (en) * | 2017-02-22 | 2017-09-29 | 优立昂（上海）汽车零部件科技有限公司 | A kind of steering column of anticollision |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6602155B2 (en) * | 2015-10-23 | 2019-11-06 | 富士機工株式会社 | Steering column device |
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2019
- 2019-03-26 CN CN201910231791.1A patent/CN109866818B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160074755A (en) * | 2014-12-18 | 2016-06-29 | 주식회사 만도 | Rack Assist Type Electric Power Steering Apparatus |
| CN206528516U (en) * | 2017-02-22 | 2017-09-29 | 优立昂（上海）汽车零部件科技有限公司 | A kind of steering column of anticollision |
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| Publication number | Publication date |
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| CN109866818A (en) | 2019-06-11 |
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