CN113212537A

CN113212537A - Novel steering column lower yoke and steering engine input shaft connecting mechanism

Info

Publication number: CN113212537A
Application number: CN202110530395.6A
Authority: CN
Inventors: 唐先海; 王英华; 万若里; 康卫军
Original assignee: Dongfeng Peugeot Citroen Automobile Co Ltd
Current assignee: Dongfeng Peugeot Citroen Automobile Co Ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-08-06

Abstract

The invention discloses a novel connecting mechanism of a lower knuckle fork of a steering column and an input shaft of a steering engine, which comprises the lower knuckle fork of the steering column and a safety clamp, wherein the lower knuckle fork of the steering column consists of a rectangular groove, a large hole on the left side surface, a small hole on the right side surface and a U-shaped groove, and the safety clamp consists of an assembly clamp spring, a locking reed and a guide inclined plane. The lower joint fork of the steering column is matched and connected with the input shaft of the steering engine by using the U-shaped groove structure, a safety clamping protection device is added, the reliability and the safety of connection are improved, the injury to a person caused by the out-of-control vehicle direction due to the disconnection of the connection of the steering column and the steering engine under special conditions is avoided, and the lower joint fork of the steering column has an anti-loosening function and is stable and reliable; the adaptive performance to the existing steering system product is good, the assembling phase angle of the lower shaft of the steering column and the input shaft of the steering engine can be rapidly identified in the assembling process of the whole vehicle production line, the assembling mistake proofing function is achieved, the locking nut can be rapidly screwed, the assembling efficiency of the assembly is improved, the manufacturing cost of the product is low, and the steering system is suitable for automobiles.

Description

Novel steering column lower yoke and steering engine input shaft connecting mechanism

Technical Field

The invention relates to the technical field of steering shafts, in particular to a novel connecting mechanism of a lower joint fork of a steering column and an input shaft of a steering engine.

Background

During the running of the automobile, a driver must be able to steer the whole automobile under any condition. Therefore, the mechanical transmission design of the steering system must be stable and reliable.

Typically, the lower yoke of the steering column assembly is connected to the steering gear input shaft. The steering column lower yoke is generally arranged as an opening spline, and after being matched with the steering engine input shaft spline, the opening of the steering column lower yoke spline is locked by using a bolt.

Such a transmission arrangement does not readily allow for rapid identification of the steering system phase angle. The fit clearance of the spline depends on the strength of the opening of the lower yoke and the tightening force of the bolt, if the fit clearance is abnormal, shaking and abnormal sound are easy to generate under special working conditions such as bumpy road surfaces, and in addition, under the unexpected conditions such as bolt breakage or nut falling, the spline connection can be disconnected due to the fact that the lower shaft of the steering column slides axially due to vibration in the running process of the whole vehicle, and a driver loses direction control.

Disclosure of Invention

The invention aims to provide a novel connecting mechanism of a lower yoke of a steering column and an input shaft of a steering gear, which aims to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel knuckle under steering column and steering engine input shaft coupling mechanism, includes knuckle under steering column and safe clamping, safe clamping joint is in knuckle under steering column surface.

The lower section fork of the steering column is composed of a rectangular groove, a large side hole, a U-shaped groove and small side holes, the rectangular groove is symmetrically arranged on the left side and the right side of the outer surface of the lower section fork of the steering column, the large side hole is arranged on the left side of the outer surface of the lower section fork of the steering column, the U-shaped groove is arranged on the inner surface of the lower section fork of the steering column, and the small side holes are arranged on the right side of the outer surface of the lower section fork of the steering column.

Preferably, the safety clamp is composed of an assembly clamp spring, a locking reed and a guide inclined plane, the assembly clamp spring is arranged on the outer surface of the safety clamp, the locking reed is arranged on the right side of the safety clamp, the guide inclined plane is arranged on the top of the locking reed, the safety clamp is buckled in a rectangular groove of the lower section fork outline of the steering column through the protruding assembly clamp springs on the two opposite sides of the safety clamp, and the locking reed of the safety clamp is located in the upper space position of a large hole on the side face.

Preferably, the steering engine input shaft is clamped in the U-shaped groove and comprises a shaft head flat square, a long groove and a tail end step, the steering engine input shaft is embedded into the U-shaped groove through the shaft head flat square, and the lower end face of the U-shaped groove and the tail end step of the steering engine input shaft form axial assembly limitation.

Preferably, the shaft head flat square is arranged on the side face of the input shaft of the steering engine, the long groove is arranged on the top of the front face of the input shaft of the steering engine, and the tail end step is arranged at the bottom of the shaft head flat square.

Preferably, the special-shaped locking bolt is clamped in the long groove and comprises a bolt head, a conical protrusion and a thread, after the special-shaped locking bolt enters an assembling position, the conical protrusion is matched with the long groove on the outer side of the steering engine input shaft to limit axial rotation of the special-shaped locking bolt, the locking nut can be screwed without clamping of the bolt head, and meanwhile, assembling connection of the steering engine input shaft in the steering column lower yoke is restrained.

Preferably, the screw head is arranged on the left side of the special-shaped locking bolt, the screw head is circular, the conical protrusions are symmetrically arranged on the screw body of the special-shaped locking bolt, the threads are arranged on the end portion of the screw body, the conical protrusions and the long grooves on the outer surface of the input shaft of the steering engine form assembly, the head of the anti-loosening reed is extruded to be provided with a guide inclined plane to enter an assembly position in the assembly process of the special-shaped locking nut and the large hole on the side surface of the U-shaped groove, and after the special-shaped locking bolt enters the assembly position, the head of the anti-loosening reed is provided with the guide inclined plane which is restored to the initial position due to elastic deformation and is located in the upper space of the bottom surface of the circular screw head of the special-shaped locking bolt to prevent the special-shaped locking bolt from exiting the assembly position.

Preferably, the outer surface of the thread is in threaded connection with a lock nut, the lock nut is a lock nut with an embedded nylon ring structure, and the lock nut is in screwed fit with the special-shaped lock bolt.

Preferably, the two sides of the assembly clamp spring protrude inwards relatively, the assembly clamp spring is assembled in a rectangular groove in the outer surface of the lower knuckle fork of the steering column, the anti-loosening spring piece extends outwards to the top of a large hole in the outer surface of the lower knuckle fork of the steering column, the anti-loosening spring piece of the safety clamp can still restrain the anti-loosening spring piece of the safety clamp to enable the anti-loosening spring piece to be located at the assembly position of the connecting structure under the abnormal conditions that the thread part of the anti-loosening spring piece is broken or a locking nut is loosened, the connection between the lower knuckle fork of the steering column and an input shaft of a steering engine is maintained, and abnormal running sound can be generated due to the loosening of connection matching.

Compared with the prior art, the invention has the beneficial effects that:

1. this novel knuckle under steering column and steering engine input shaft coupling mechanism, use the cooperation of knuckle under the new construction steering column and the cooperation of steering engine input shaft, increase safe clamping on this basis, prevent to break at locking bolt fracture or locking nut takes off the disconnection of being connected of steering column lower shaft and steering engine input shaft under the unexpected circumstances such as drawing, possess the locking function that takes off, can be in whole car production line assembling process, quick discernment steering column lower shaft and steering engine input shaft assembly phase angle, possess the assembly mistake proofing function, its toper arch and the cooperation of steering engine input shaft after dysmorphism locking bolt gets into the assembly position, it is spacing to make it take the axial to rotate certainly, to dysmorphism locking bolt, can exempt from the direct lock nut of screwing up of spiral shell head centre gripping, assembly efficiency is improved, and low in manufacturing cost, connect stably and reliably, and has the popularization meaning.

2. In the novel steering column lower yoke and steering engine input shaft connecting mechanism, the head of the anti-loosening spring leaf which is squeezed open is provided with a guide inclined plane to enter an assembling position in the assembling process of the special-shaped locking nut and the large hole on the side surface of the U-shaped groove. After the special-shaped locking bolt enters the assembly position, the head of the anti-loosening spring leaf is provided with a guide inclined plane which is restored to the initial position due to elastic deformation and is positioned in the upper space of the bottom surface of the round screw head of the special-shaped locking bolt to prevent the special-shaped locking bolt from exiting the assembly position.

3. This novel knuckle under steering column and steering engine input shaft coupling mechanism, under the abnormal conditions such as the screw thread part fracture of dysmorphism lockbolt or lock nut pine takes off, the locking reed of safety clamping still can retrain dysmorphism lockbolt and be in connection structure assembled position, maintains the connection of knuckle under the steering column and steering engine input shaft to can be owing to connect the not hard up abnormal sound that produces of traveling of complex.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a perspective assembly view of the present invention;

FIG. 2 is a front view of a steering column lower yoke of the present invention;

FIG. 3 is a side view of the steering column lower yoke of the present invention;

FIG. 4 is a perspective view of a security clip of the present invention;

FIG. 5 is a front view of the steering gear input shaft of the present invention;

FIG. 6 is a side view of the steering gear input shaft of the present invention;

fig. 7 is a perspective view of the shaped locking bolt of the present invention.

In the figure: 1. a steering column lower yoke; 12. a rectangular groove; 13. side macropore; 14. a U-shaped groove and a small hole on the side surface of 15; 2. a safety card holder; 21. assembling a clamp spring; 22. a locking spring plate; 23. a guide slope; 3. a steering gear input shaft; 31. the shaft head is flat and square; 32. a long groove; 33. a terminal step; 4. a special-shaped locking bolt; 41. a screw head; 42. a screw; 43. a conical projection; 44. a thread; 5. and locking the nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-7, the present invention provides a technical solution: a novel steering column lower yoke and steering engine input shaft connecting mechanism comprises a steering column lower yoke 1 and a safety clamp 2, wherein the safety clamp 2 is clamped and assembled on the outer surface of the steering column lower yoke 1, the steering column lower yoke 1 consists of a rectangular groove 12 and a large hole 13 on the right side surface, the left side surface small hole 15 and the U-shaped groove 14 are formed, the rectangular groove 12 is symmetrically arranged on the left side and the right side of the outer surface of the lower steering column yoke 1, the side surface large hole 13 is arranged on the right side of the outer surface of the lower steering column yoke 1, the U-shaped groove 14 is arranged on the inner surface of the lower steering column yoke 1, the safety clamp 2 is buckled in the rectangular groove 12 of the outline of the lower steering column yoke 1 through the protruding assembling clamp springs 21 on the two opposite sides of the safety clamp 2, the anti-loosening spring leaf 22 of the safety clamp 2 is located at the upper space position of the side surface large hole 13, the steering machine input shaft 3 is embedded in the U-shaped groove 14 through the shaft head flat square 31, and the lower end surface of the U-shaped groove 14 and the tail end step 33 of the steering machine input shaft 3 form axial assembling limit.

The safety clamp 2 consists of an assembly clamp spring 21, a locking reed 22 and a guide inclined plane 23, the assembly clamp spring 21 is symmetrically arranged on the outer surfaces of the left side and the right side of the safety clamp 2, the locking reed 22 is arranged on the right side of the safety clamp 2, the guide inclined plane 23 is fixedly connected to the top of the locking reed 22, two sides of the assembly clamp spring 21 are relatively protruded inwards, the assembly clamp spring 21 is assembled in a rectangular groove 12 symmetrically arranged on two sides of the outer surface of the steering column lower yoke 1, the locking reed 22 extends outwards to the top of a side surface large hole 13 on the outer surface of the steering column lower yoke 1, a steering machine input shaft 3 is clamped inside the U-shaped groove 14, the steering machine input shaft 3 comprises a flat square 31, the long groove 32 and the tail end step 33, the shaft head flat square 31 is arranged on the side face of the input shaft 3 of the steering engine, the long groove 32 is arranged on the top of the front face of the input shaft 3 of the steering engine, and the tail end step 33 is arranged on the bottom of the shaft head flat square 31.

The special-shaped locking bolt 4 is clamped in the long groove 32, the special-shaped locking bolt 4 comprises a bolt head 41, a screw rod 42, a conical protrusion 43 and a thread 44, the bolt head 41 is arranged on the left side of the special-shaped locking bolt 4, the bolt head 41 is circular, the conical protrusion 43 is symmetrically arranged on a screw rod 42 body of the special-shaped locking bolt 4, the thread 44 is arranged on the outer surface of the end part of the screw rod 42 body of the special-shaped locking bolt 4, the conical protrusion 43 is assembled with the long groove 32 on the outer surface of the input shaft 3 of the steering machine, the outer surface of the thread 44 is in threaded connection with a locking nut 5, the locking nut 5 is a check nut, the locking nut 5 is in screwed fit with the special-shaped locking bolt 4, the conical protrusion 43 is assembled with the long groove 32 on the outer surface of the input shaft 3 of the steering machine, and the guiding inclined plane 23 arranged at the head of the check spring leaf 22 is squeezed into an assembling position in the assembling process of the large hole side surface 13 of the U-shaped groove 14, after the special-shaped locking bolt 4 enters the assembly position, the head of the locking spring piece 22 is provided with a guide inclined plane 23 which is restored to the initial position due to elastic deformation and is positioned in the upper space of the bottom surface of the round screw head 41 of the special-shaped locking bolt 4 to prevent the special-shaped locking bolt 4 from exiting the assembly position, and under the abnormal conditions of breakage of the thread 44 part of the special-shaped locking bolt 4, loosening of the locking nut 5 and the like, the locking spring piece 22 of the safety clamp 2 can still restrain the special-shaped locking bolt 4 to be positioned at the assembly position of the connecting structure, the connection between the steering column lower yoke 1 and the steering engine input shaft 3 is maintained, and abnormal running sound can be generated due to loosening of connection and matching.

When in use, after the special-shaped locking bolt 4 enters the assembly position, the head of the anti-loosening reed 22 is provided with a guide inclined surface 23 which is restored to the initial position due to elastic deformation and is positioned in the upper space of the bottom surface of the round screw head 41 of the special-shaped locking bolt 4 to prevent the special-shaped locking bolt 4 from exiting the assembly position, and under the unexpected conditions of breakage of the special-shaped locking bolt 4 or falling of the locking nut 5 and the like, the special-shaped locking bolt 4 is ensured not to fall off from the assembly position, so that the steering column lower yoke 1 and the steering machine input shaft 3 are ensured not to be disconnected due to axial sliding of the lower shaft of the steering column lower yoke 1 caused by vibration in the running of the whole vehicle, the spline connection is further ensured not to lose the direction control, and accidents of breakage of the threaded end of the special-shaped locking bolt 4 or falling of the locking nut 5 and the like can cause loose connection and matching of the steering column lower yoke 1 and the steering machine input shaft 3, and further generate loosening noise in the running process of the vehicle, and warning the driver to perform safety inspection and restore normal connection in time.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel knuckle fork and steering engine input shaft coupling mechanism under steering column, includes knuckle fork (1) and safe clamping (2) under the steering column, its characterized in that: the safety clamp (2) is clamped on the outer surface of the steering column lower yoke (1);

knuckle fork (1) is down by rectangular channel (12), left surface macropore (13), U-shaped groove (14) and right flank aperture (15) and constitutes under the steering column, the surface left and right sides of knuckle fork (1) is seted up under the steering column to rectangular channel (12) symmetry, surface left side of knuckle fork (1) is seted up under the steering column in side macropore (13), the surface of knuckle fork (1) is seted up under the steering column in U-shaped groove (14), the surface right side of knuckle fork (1) is seted up under the steering column in side aperture (15).

2. The novel steering column lower yoke and steering engine input shaft connecting mechanism of claim 1, wherein: safety clamping (2) comprise assembly jump ring (21), locking reed (22) and direction inclined plane (23), the surface left and right sides of safety clamping (2) is seted up to assembly jump ring (21) symmetry, locking reed (22) fixed mounting is in the left side of safety clamping (2), the top of locking reed (22) is seted up in direction inclined plane (23).

3. The novel steering column lower yoke and steering engine input shaft connecting mechanism of claim 1, wherein: the steering engine input shaft (3) is clamped in the U-shaped groove (14), and the steering engine input shaft (3) comprises a shaft head flat square (31), a long groove (32) and a tail end step (33).

4. The novel steering column lower yoke and steering engine input shaft connecting mechanism of claim 3, wherein: the left and right sides of steering gear input shaft (3) is seted up to spindle nose flat side (31) symmetry, long recess (32) are seted up in the positive top of steering gear input shaft (3), the bottom of spindle nose flat side (31) is seted up in terminal step (33).

5. The novel steering column lower yoke and steering engine input shaft connecting mechanism of claim 3, wherein: the special-shaped locking bolt (4) is clamped in the long groove (32), and the special-shaped locking bolt (4) comprises a screw head (41), a screw rod (42), a conical protrusion (43) and a thread (44).

6. The novel steering column lower yoke and steering engine input shaft connecting mechanism of claim 5, wherein: the special-shaped locking bolt is characterized in that the screw head (41) is arranged on the left side of the special-shaped locking bolt (4), the screw head (41) is circular, the conical protrusions (43) are symmetrically arranged on a screw rod (42) body of the special-shaped locking bolt (4), the threads (44) are arranged on the outer surface of the end portion of the screw rod (42) of the special-shaped locking bolt (4), and the conical protrusions (43) are assembled with the long grooves (32) on the outer surface of the steering machine input shaft (3).

7. The novel steering column lower yoke and steering engine input shaft connecting mechanism of claim 5, wherein: the outer surface of the thread (44) is in threaded connection with a locking nut (5), the locking nut (5) is a locknut, and the locking nut (5) is in screwing fit with the special-shaped locking bolt (4).

8. The novel steering column lower yoke and steering engine input shaft connecting mechanism of claim 2, wherein: the assembling clamp springs (21) are symmetrically distributed on two sides and protrude inwards relatively, the assembling clamp springs (21) are assembled in rectangular grooves (12) on the left and right sides of the outer surface of the lower knuckle fork (1) of the steering column, and the outward sides of the anti-loosening spring pieces (22) extend to the tops of side large holes (13) on the outer surface of the lower knuckle fork (1) of the steering column.