CN115320700B - Steering column collapsing mechanism - Google Patents
Steering column collapsing mechanism Download PDFInfo
- Publication number
- CN115320700B CN115320700B CN202211055849.XA CN202211055849A CN115320700B CN 115320700 B CN115320700 B CN 115320700B CN 202211055849 A CN202211055849 A CN 202211055849A CN 115320700 B CN115320700 B CN 115320700B
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- China
- Prior art keywords
- groove
- tearing
- guide
- crumple
- steering column
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
- B62D1/192—Yieldable or collapsible columns
Abstract
The application provides a steering column collapsing mechanism, comprising: the upper column tube, the lower column tube and the crumple assembly matched with the upper column tube and the lower column tube respectively, the crumple assembly comprises a tearing steel belt and a guide piece, the tearing steel belt is provided with a fixed steel belt, a flexible steel belt and a tearing groove positioned between the fixed steel belt and the flexible steel belt, the fixed steel belt is fixedly arranged with the upper column tube, the flexible steel belt and the lower column tube are fixedly arranged, the guide piece is arranged on the upper column tube and matched with the flexible steel belt, and in the crumple stabilization stage, the tearing of the tearing groove and the deformation of the flexible steel belt occur simultaneously. In the collapsing process, the tearing of the tearing groove and the deformation of the flexible steel belt simultaneously occur, so that stable collapsing force is provided, the safety of the vehicle is improved, and the injury of a driver in the vehicle collision is effectively avoided or reduced.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to a steering column collapsing mechanism.
Background
With the rapid development of the automobile industry, the quality of life of customers is improved, the comprehensive performance of the automobile is required to be higher, and the safety performance of the automobile is an important aspect of attention of the customers. When the automobile collides, a driver often leans forwards due to strong stopping action, the chest of the human body collides with the steering wheel, the chest of the driver is damaged, and the life of the driver can be endangered in severe cases. In order to ensure the personal safety of a driver, an automobile manufacturer designs a steering column connected with a steering wheel into a collapsed type, and when the steering column is impacted, the steering column is collapsed and folded or instantaneously broken due to external extrusion, so that the distance between the steering column and the driver is pulled, and the living space is increased.
In the related art, the steering column absorbs energy to the crumple mechanism mainly through deformation of the steel belt, so that injury to a driver due to impact is reduced. Meanwhile, in order to ensure that the impact force is counteracted before the steering column collapses to the limit position, the structures of all parts of the steel belt are different, so that stable collapse force cannot be provided, and the collapse energy absorption effect of the collapse mechanism is affected.
Accordingly, there is a need to provide an improved steering column collapse mechanism that addresses the above-described problems.
Disclosure of Invention
The steering column collapsing mechanism provided by the application has the advantages of good collapsing energy absorption effect, stable collapsing process and high safety.
The application provides a steering column crumpling mechanism which comprises an upper column tube, a lower column tube and a crumpling assembly matched with the upper column tube and the lower column tube respectively, wherein the crumpling assembly comprises a tearing steel belt and a guide piece, the tearing steel belt is provided with a fixed steel belt, a flexible steel belt and a tearing groove positioned between the fixed steel belt and the flexible steel belt, the fixed steel belt is fixedly arranged with the upper column tube, the flexible steel belt is fixedly arranged with the lower column tube, and the guide piece is arranged on the upper column tube and matched with the flexible steel belt, and in a crumpling stable stage, the tearing of the tearing groove and the deformation of the flexible steel belt simultaneously occur.
Further, the collapsing assembly comprises a sliding block fixedly connected with the flexible steel belt, the guide piece is provided with a guide groove and a limiting block protruding into the guide groove, the sliding block is in clearance fit with the guide groove, and the sliding block bumps off the limiting block in the initial stage of collapsing.
Further, the crumple component comprises a guide block, the guide block is fixed at one end, close to the lower column tube, of the guide piece, the flexible steel belt comprises a flexible portion, fixing portions and first tearing portions, the fixing portions and the first tearing portions are arranged at two ends of the flexible portion, the guide block is attached to the flexible portion, and the flexible steel belt deforms under the action of the guide block.
Further, the tear slot is disposed along a collapse direction of the collapse assembly; one end of the tearing groove is flush with the first tearing part, and the other end of the tearing groove extends to the bending part.
Further, the fixing steel belt comprises a second tearing part connected with the first tearing part and a protruding part extending from the second tearing part to the lower column tube, and mounting holes are formed in the second tearing part and the protruding part.
Further, the fixing part is provided with a matching groove, and the sliding block is in interference fit with the matching groove.
Further, the guide piece and the upper column tube are welded and fixed, the guide piece comprises a bottom plate and a pair of side plates which vertically extend along two side edges of the bottom plate, and the guide groove is formed in the bottom plate.
Further, the bottom plate and the side plate form an accommodating groove, and the second tearing part, the tearing groove and the first tearing part are positioned in the accommodating groove.
Further, the crumple component further comprises a connecting piece, wherein the connecting piece comprises a base plate fixedly matched with the lower column tube and a fixing plate vertically extending from the edge of the base plate, the fixing plate is provided with a fixing groove, and the fixing groove is in interference fit with the sliding block.
Further, the lower column tube is provided with a downward moving groove, and the crumple component is arranged in the downward moving groove.
Compared with the prior art, the steering column collapsing mechanism disclosed by the application has the advantages that in the collapsing stabilization stage, the tearing of the tearing groove and the deformation of the flexible steel belt simultaneously occur, the collapsing energy absorbing capacity of the steering column is improved, the stable collapsing force is provided, the safety of a vehicle is improved, and the injury of a driver in the vehicle collision is effectively reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and together with the description, serve to explain the principles of the specification.
FIG. 1 is a side view of a steering column crumple mechanism of the present application.
Fig. 2 is an exploded side view of the steering column collapse mechanism of fig. 1.
FIG. 3 is a perspective view of the crush assembly of FIG. 1 mounted to an upper column tube.
Fig. 4 is a perspective view of the tear strip of fig. 3.
Fig. 5 is a perspective view of the slider of fig. 3 mated with a guide.
Fig. 6 is a perspective view of the guide of fig. 3.
Fig. 7 is a side view of the guide of fig. 6.
Reference numerals illustrate: an upper column tube, 10; a lower column tube 20; a downward moving groove (21); a crush assembly, 30; tearing the steel strip 31; fixing the steel strip 310; a second tear portion 3101; a protrusion 3102; mounting holes, 3103; a flexible steel strip 311; a first tear 3110; a flexure 3111; a fixing portion 3112; a mating groove 3113; a tear groove 312; a guide member 32; a guide groove 320; a limiting block 321; a bottom plate, 322; a side plate 323; a receiving groove, 324; a slider 33; guide blocks, 34; a connecting member 35; a substrate 350; a fixing plate 351; fixing grooves 352.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present specification. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present description as detailed in the accompanying claims.
The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the description. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used in this specification to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present description. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.
Next, embodiments of the present specification will be described in detail.
As shown in fig. 1 to 2, the steering column crumple mechanism of the present application includes an upper column tube 10, a lower column tube 20, and a crumple assembly 30. The crumple component 30 is fixedly matched with the upper column tube 10 and the lower column tube 20 respectively, and the lower end of the upper column tube 10 is arranged in the lower column tube 20.
The crush assembly 30 includes a tear strip 31, a guide 32, a slider 33, a guide 34, and a connector 35. A part of the tear-off steel band 31 is fixed to the upper column tube 10, and the tear-off steel band 31 is fixedly connected to the guide 32, the lower column tube 20 and the connecting member 35, respectively, by the sliding block 33. The guide 32 is welded to the upper column tube 10, and the guide block 34 is fixed to an end of the guide 32 near the lower column tube 20. The connector 35 is mounted on the lower column tube 20 and is fixed to the slider 33.
As shown in fig. 3 to 4, the tearing strip 31 is provided with a fixed strip 310, a flexible strip 311, and a tearing groove 312 between the fixed strip 310 and the flexible strip 311. The fixed steel band 310 is fixedly arranged with the upper column pipe 10, and the flexible steel band 311 is fixedly arranged with the lower column pipe 20 through the sliding block 33 and the connecting piece 35.
The flexible steel strip 311 includes a flexible portion 3111, a fixing portion 3112 and a first tearing portion 3110 provided at both ends of the flexible portion 3111. The bending portion 3111 is disposed around and attached to the guide block 34, and the bending portion 3111 and the first tearing portion 3110 are deformed by the guide block 34. The fixing portion 3112 is fixed to the slider 33 and the connector 35. The fixing strip 310 includes a second tearing portion 3101 connected to the first tearing portion 3110 and a protruding portion 3102 extending from the second tearing portion 3101 toward the lower column tube 20.
The width of the fixing portion 3112 is equal to the total width of the first tearing portion 3110, the tearing groove 312, and the second tearing portion 3101. The fixed portion 3112 is provided with a fitting groove 3113, and the fitting groove 3113 is interference-fitted to the slider 33. The width of the protruding portion 3102 is larger than the width of the second tearing portion 3101, mounting holes 3103 are formed in both the second tearing portion 3101 and the protruding portion 3102, and the diameter of the mounting holes 3103 in the protruding portion 3102 is relatively large.
An elongated tearing groove 312 is formed between the first tearing portion 3110 and the second tearing portion 3101, and a thickness of the tearing groove 312 is smaller than those of the first tearing portion 3110 and the second tearing portion 3101. In the case of collapsing, the first tearing portion 3110 and the second tearing portion 3101 are separated by gradually breaking along the tearing groove 312 because the tearing groove 312 is relatively weak in structure.
Specifically, the tearing groove 312 is disposed along the crumple direction of the crumple member 30, one end of the tearing groove 312 is flush with the first tearing portion 3110, the second tearing portion 3101, and the other end extends to the flexure portion 3111, so that the first tearing portion 3110 and the second tearing portion 3101 can be completely separated.
One end of the guide block 34 is a planar end, and the other end is a circular arc end. The flat end is clamped in the guide 32, and the arc end is positioned outside the guide 32 and is attached to the bending portion 3111. At the beginning of collapse and during the stabilization phase, guide block 34 moves down tube 20. Since the fixing portion 3112 of the flexible steel strip 311 is fixed to the lower column tube 20, the guide block 34 abuts against the flexible steel strip 311, and the first tear portion 3110 of the flexible steel strip 311 is gradually deformed by the guide block 34.
As shown in fig. 5 to 7, the guide 32 includes a bottom plate 322 and a pair of side plates 323 extending perpendicularly from both side edges of the bottom plate 322. The side plate 323 is welded to the upper column tube 10, the bottom plate 322 is provided with a guide groove 320, and a pair of stoppers 321 protrude into the guide groove 320 from the side walls of the guide groove 320. The bottom plate 322 and the pair of side plates 323 form a receiving groove 324, and the first tearing portion 3110, the tearing groove 312, and the second tearing portion 3101 of the torn steel strip 31 are located in the receiving groove 324.
The sliding block 33 is positioned in the guide groove 320 and is clearance fitted thereto. When collapsing, the slider 33 and the guide groove 320 move relatively, and the fixed portion of the flexible steel strip 311 is fixed to the slider 3, so that the first tear portion 3110 of the flexible steel strip 311 can be stably deformed in the fixed direction.
As shown in fig. 1 and 3, the connector 35 includes a base plate 350 and a fixing plate 351 extending perpendicularly from an edge of the base plate 350. The base plate 350 is fixed to the lower column 20, and further the slider 33 and the flexible steel strip 311 of the tear steel strip 31 are fixed to the lower column 20. The fixing plate 351 is provided with a fixing groove 352, and the fixing groove 352 is interference fit with the slider 33. The lower column tube 20 is provided with a downward movement groove 21, and the crumple assembly 30 is arranged in the downward movement groove 21.
In the initial stage of collapse, the upper column 10, the guide 32, the guide block 34 and the fixed steel band 310 move toward the lower column 20, and the lower column 20, the connector 35, the slider 33 and the flexible steel band 311 remain stationary. The slider 33 first breaks the stopper 321 of the guide 32, providing a peak force of the collapsing force. As the upper pillar 10, the guide 32, the guide block 34 and the fixed steel band 310 further collapse, the tearing groove 312 between the fixed steel band 310 and the flexible steel band 311 tears in the collapse stabilization stage, and the flexible steel band 311 starts to deform under the action of the guide block 34. The tearing of the tear slot 312 occurs simultaneously with the deformation of the flexible steel strip 311, providing a stable collapse retention.
According to the steering column collapsing mechanism provided by the application, in the initial stage of collapsing, the limiting block 321 is broken to provide initial collapsing force; during the collapse stabilization phase, the tearing groove 312 tears and deforms the flexible steel strip 311 while providing a collapse force, increasing the ability of the steering column collapse mechanism to absorb energy. In addition, the tearing of the tearing groove 312 and the deformation of the flexible steel belt 311 occur simultaneously, and in the collapse stabilization stage, two collapse structures with different forms are provided, and the tearing force of the tearing steel belt 31 and the deformation force of the flexible steel belt 311 jointly provide stable collapse force, so that the safety of the vehicle is improved, and the injury of a driver in the vehicle collision is effectively reduced.
The present application is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any person skilled in the art can make some changes or modifications to the above-mentioned embodiments without departing from the scope of the present application.
Claims (10)
1. A steering column crumple mechanism comprising: go up pillar, lower pillar and respectively with last pillar, lower pillar complex ulceration subassembly, the ulceration subassembly is including tearing steel band and guide, it is equipped with fixed steel band, flexible steel band and be located to tear the steel band fixed steel band the tearing groove between the flexible steel band, fixed steel band with go up the fixed setting of pillar, flexible steel band with lower pillar is fixed to be set up, the guide is installed go up on the pillar and with flexible steel band cooperatees, in the steady stage of ulceration, tear the tearing of groove with the deformation of flexible steel band takes place simultaneously.
2. The steering column crumple mechanism of claim 1, wherein the crumple assembly comprises a slider fixedly connected to the flexible steel strip, the guide is provided with a guide groove and a stopper protruding into the guide groove, the slider is in clearance fit with the guide groove, and the slider bumps off the stopper at a crumple start stage.
3. The steering column crumple mechanism of claim 2, wherein the crumple assembly comprises a guide block fixed at one end of the guide piece near the lower column tube, the flexible steel strip comprises a flexible portion, a fixing portion and a first tearing portion, the fixing portion and the first tearing portion are arranged at two ends of the flexible portion, the guide block is attached to the flexible portion, and the flexible steel strip deforms under the action of the guide block.
4. A steering column crumple mechanism according to claim 3, wherein said tear groove is disposed along a crumple direction of said crumple member; one end of the tearing groove is flush with the first tearing part, and the other end of the tearing groove extends to the bending part.
5. A steering column crumple mechanism according to claim 3, wherein said fixed steel strap comprises a second tear portion connected to said first tear portion and a projection extending from said second tear portion to said lower column tube, said second tear portion and said projection having mounting holes therein.
6. A steering column crumple mechanism according to claim 3, wherein said fixed portion is provided with a mating groove, and said slider is in interference fit with said mating groove.
7. A steering column crumple mechanism according to claim 5 and wherein said guide member is fixedly secured to said upper column tube, said guide member comprising a bottom plate and a pair of side plates extending vertically along opposite side edges of said bottom plate, said guide slot being provided in said bottom plate.
8. The steering column crumple mechanism of claim 7, wherein the bottom panel and the side panels form a receiving groove, and wherein the second tear portion, the tear groove, and the first tear portion are located within the receiving groove.
9. The steering column crumple mechanism of claim 2, wherein the crumple assembly further comprises a connector comprising a base plate fixedly engaged with the lower column tube and a securing plate extending perpendicularly from an edge of the base plate, the securing plate being provided with a securing slot, the securing slot being in interference engagement with the slider.
10. The steering column crumple mechanism of claim 1 wherein the lower column tube is provided with a downshifting groove, and wherein the crumple assembly is disposed within the downshifting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211055849.XA CN115320700B (en) | 2022-08-30 | 2022-08-30 | Steering column collapsing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211055849.XA CN115320700B (en) | 2022-08-30 | 2022-08-30 | Steering column collapsing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115320700A CN115320700A (en) | 2022-11-11 |
| CN115320700B true CN115320700B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211055849.XA Active CN115320700B (en) | 2022-08-30 | 2022-08-30 | Steering column collapsing mechanism |
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| CN (1) | CN115320700B (en) |
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| CN115320700A (en) | 2022-11-11 |
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