CN210555091U

CN210555091U - Connecting structure of steering machine and steering column, steering system and vehicle

Info

Publication number: CN210555091U
Application number: CN201921129472.1U
Authority: CN
Inventors: 王庆峰
Original assignee: BAIC Motor Co Ltd
Current assignee: BAIC Motor Co Ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-05-19
Anticipated expiration: 2029-07-17

Abstract

The utility model relates to a connection structure, a steering system and vehicle of steering engine and steering column, wherein, connection structure includes steering engine input shaft (10) and universal joint fork (20) that link to each other with the steering column, be provided with on steering engine input shaft (10) and float locating part (30), be formed with on universal joint fork (20) with locating part (30) complex limit structure (40) float, with the steering engine with steering column fixed connection. Like this, steering engine and steering column are connected through the spacing structure cooperation on unsteady locating part and the universal joint fork on the steering engine input shaft, and unsteady locating part floats and sets up on the steering engine input shaft to can produce for the steering engine input shaft according to actual need and remove, with the installation and the dismantlement of accomplishing steering engine and steering column. This connection structure convenient operation can realize simply installing, avoids the abnormal sound noise because of the not hard up abnormal sound noise that causes of bolt simultaneously.

Description

Connecting structure of steering machine and steering column, steering system and vehicle

Technical Field

The disclosure relates to the technical field of vehicle steering, in particular to a connecting structure of a steering engine and a steering column, a steering system and a vehicle.

Background

When the existing vehicle designs the connection mode of the steering engine and the steering column, a universal joint fork of the steering column is generally connected with an input shaft of the steering engine. Generally, the universal joint fork is provided with an opening with an internal spline, the outer end of the input shaft is provided with an external spline, and the universal joint fork and the input shaft are radially penetrated through the internal spline and the external spline and are locked and fixed in an axial limiting mode through a locking bolt, so that the steering engine is fixedly connected with the steering column, and the effective transmission of steering torque is realized. However, in the use of the vehicle, the loosening of the bolt causes problems such as loosening of the joint portion and generation of abnormal noise, and also increases the steering clearance, which is likely to cause customer complaints.

SUMMERY OF THE UTILITY MODEL

An object of the present disclosure is to provide a connection structure of a steering gear and a steering column, which can prevent rotational abnormal noise caused by loosening of a bolt.

Another object of the present disclosure is to provide a steering system configured with a connection structure of a steering gear and a steering column provided by the present disclosure.

It is a further object of the present disclosure to provide a vehicle equipped with a steering system provided by the present disclosure.

In order to achieve the above object, the present disclosure provides a connection structure of a steering engine and a steering column, including a steering engine input shaft and a universal joint fork connected with the steering column, a floating limiting part is provided on the steering engine input shaft, a limiting structure matched with the floating limiting part is formed on the universal joint fork, so as to connect the steering engine with the steering column.

Optionally, the steering gear input shaft is including the inserted block that is located the axial setting of tip, the universal joint fork is used for supplying at the tip along the axial setting the slot that the inserted block stretches into, the locating part that floats sets up along radial telescopically on the inserted block, limit structure form in the slot and can with the locating part radial block that floats.

Optionally, the floating limiting member includes a positioning pin that can radially extend out of or retract into the surface of the insert block, and the limiting structure is configured as a positioning hole that is radially opened on the slot.

Optionally, the locating pin is configured as a ladder shape, the locating part that floats still include with the first elastic component that the main aspects of locating pin links to each other, the surface of inserted block is along radially being formed with the ladder groove, first elastic component with the locating pin is placed in proper order the ladder inslot, first elastic component is located the bottom in ladder groove.

Optionally, the insert block is formed as a square block, the insert slot is formed as a square slot, the floating limiting member includes a ball that can be radially ejected from or retracted into the surface of the insert block, and the limiting structure is configured as an annular groove formed in the inner wall of the insert slot.

Optionally, the floating limiting member further includes a second elastic member connected to the ball, a tapered groove with an outward tapered opening is formed in the surface of the insert block along the radial direction, the second elastic member and the ball are sequentially placed in the tapered groove, the second elastic member is located at the bottom of the tapered groove, and the diameter of the ball is greater than the diameter of the notch of the tapered groove.

Optionally, the ball comprises a plurality of balls arranged on the insert block at intervals along the circumferential direction.

Optionally, a lubricating layer is disposed on one of the insert block and the insert slot.

According to a second aspect of the present disclosure, there is provided a steering system including the connection structure of the steering gear and the steering column according to the above.

According to a third aspect of the present disclosure, a vehicle is provided, the vehicle comprising a steering system according to the above.

Through the technical scheme, the steering engine and the steering column are connected in a matched mode through the floating limiting part on the input shaft of the steering engine and the limiting structure on the universal joint fork, and the floating limiting part is arranged on the input shaft of the steering engine in a floating mode, so that the floating limiting part can move relative to the input shaft of the steering engine according to actual needs, and the steering engine and the steering column can be installed and detached. This connection structure convenient operation can realize simply installing, avoids the abnormal sound noise because of the not hard up abnormal sound noise that causes of bolt simultaneously.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic structural view of a connection structure of a steering gear and a steering column according to an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic view of the structure of an input shaft of the steering gear in the coupling structure shown in FIG. 1;

FIG. 3 is a schematic structural view of a yoke in the connection structure shown in FIG. 1;

fig. 4 is a schematic structural diagram of a floating position limiter according to an exemplary embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a floating position limiter according to another exemplary embodiment of the present disclosure.

Description of the reference numerals

10 steering engine input shaft 11 inserted block

20 universal joint fork 21 slot

30 floating limiting piece 31 positioning pin

32 first elastic member 33 ball

34 second elastic piece 40 limiting structure

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, the use of directional terms such as "inner and outer" refers to the inner and outer of the corresponding component profiles, unless otherwise stated. Furthermore, the terms "first," "second," and the like, as used in this disclosure, are intended to distinguish one element from another, and not necessarily for order or importance. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated.

Referring to fig. 1 and 3, the disclosed embodiment provides a connection structure of a steering engine and a steering column, which includes a steering engine input shaft 10 and a universal joint yoke 20 connected to the steering column, i.e., the steering engine and the steering column can be connected through the steering engine input shaft 10 and the universal joint yoke 20. The steering engine input shaft 10 may be provided with a floating limiting member 30, and the universal joint yoke 20 may be correspondingly formed with a limiting structure 40 engaged with the floating limiting member 30, so as to fixedly connect the steering engine and the steering column. It should be noted that, in the embodiment of the present disclosure, the floating limiting member 30 is disposed on the steering input shaft 10, and "floating" refers to being capable of generating a position movement relative to the steering input shaft 10, so as to achieve the mounting and dismounting of the universal joint yoke 20 and the steering input shaft 10. That is, when the steering engine and the steering column are required to be connected, the floating limiting member 30 and the limiting structure 40 are matched with each other for limiting, and when the steering engine and the steering column are required to be disassembled, the floating limiting member 30 can move relative to the input shaft 10 of the steering engine so as to be disengaged from the limiting structure 40, and the specific working process thereof will be described in detail in the following embodiments. The specific structural forms of the floating limiting member 30 and the limiting structure 40 are not limited in the present disclosure, for example, the floating limiting member 30 may be a structural form that is driven by an elastic member and can move relative to the steering gear input shaft 10, or may be a telescopic structural form that is controlled by a similar button linkage and is disposed on the steering gear input shaft 10, so as to realize the movement relative to the steering gear input shaft 10 by virtue of the telescopic motion of the floating limiting member 30; the limiting structure 40 may be a structural form formed by the universal joint yoke 20 itself, and it may have a structural form that is adapted to the structural form of the floating limiting member 30, and the matching installation of the limiting structure and the floating limiting member 30 is only required to realize the relative fixation of the steering input shaft 10 and the universal joint yoke 20.

In this way, the steering gear and the steering column are cooperatively connected to be limited by the floating limit member 30 on the steering gear input shaft 10 and the limit structure 40 on the yoke 20, thereby achieving efficient transmission of steering torque of the steering wheel. The floating limiting member 30 is floatingly disposed on the input shaft 10, so as to be capable of moving relative to the steering engine input shaft 10 according to actual needs, so as to complete the installation and the disassembly of the steering engine and the steering column. This connection structure convenient operation can realize simple and easy manual installation and from line location function, avoids additionally using assembly and disassembly tools to carry out the dismouting, can avoid simultaneously reducing the customer complains of because of the not hard up abnormal sound noise that causes of bolt, promotes vehicle use customer satisfaction.

Further, referring to fig. 2 and 3, the steering gear input shaft 10 may include an axially disposed insert 11 at an end portion, and the yoke 20 may include an axially disposed insert slot 21 at an end portion for the insert 11 to extend into, respectively, i.e., the steering gear input shaft 10 and the yoke 20 may be connected by an axial insertion type to radially limit the steering gear and the steering column. The floating limiting member 30 is telescopically arranged on the insert block 11 along a radial direction, and the limiting structure 40 is formed in the slot 21 and can be radially engaged with the floating limiting member 30. Namely, after the steering gear axially inserts the input shaft 10 and the universal joint yoke 20 through the insert block 11 and the insert slot 21, the floating limiting member 30 and the limiting structure 40 are correspondingly matched for limiting, and the steering gear input shaft 10 and the universal joint yoke 20 are fixedly connected through radial clamping. The plug-in type is simple in structure, convenient to assemble and beneficial to quick assembly and disassembly. In addition, the steering gear input shaft 10 and the yoke 20 can be further limited by designing corresponding plug-in structures, and this embodiment will be described in the following description.

According to one embodiment, referring to fig. 4, the floating limiting member 30 may include a positioning pin 31 that can be extended or retracted in the radial direction from the surface of the insert block 11, and the limiting structure 40 may be correspondingly configured as a positioning hole that is opened in the radial direction on the slot 21, that is, the steering gear input shaft 10 and the yoke 20 can be limited by the matching form of the positioning pin 31 and the positioning hole. When the two are connected, the positioning pin 31 extends out of the surface of the insert block 11 and extends into the positioning hole; when the two are disassembled, the positioning pin 31 is withdrawn from the positioning hole and retracted to the surface of the insert block 11. Referring to fig. 3, to facilitate the alignment of the positioning pin 31 and the positioning hole, the positioning hole may be provided as a through hole penetrating through the wall of the slot 21.

Further, referring to fig. 4, the positioning pin 31 may be configured in a stepped shape, and the floating limiting member 30 may further include a first elastic member 32 connected to a large end of the positioning pin 31, so that the expansion and contraction of the positioning pin 31 may be achieved by an elastic action of the first elastic member 32. The first elastic member 32 may be a spring, for example. As shown in fig. 4, in order to fix the positioning pin 31 on the insert block 11, a stepped groove may be formed on the surface of the insert block 11 in the radial direction, the first elastic member 32 and the positioning pin 31 are sequentially placed in the stepped groove, and the first elastic member 32 is located at the bottom of the stepped groove. Thus, the two ends of the first elastic element 32 can be fixedly connected with the bottom of the stepped groove and the large end of the positioning pin 31 respectively, the positioning pin 31 is fixed on the insert block 11 through the abutting action of the large end and the stepped groove, and the small end of the positioning pin is used for extending out of or retracting into the surface of the insert block 11. It should be noted here that the bottom of the stepped groove refers to the groove bottom of its own groove structure. The two ends of the first elastic element 32 can be respectively fixedly connected with the bottom of the stepped groove and the large end of the positioning pin 31, and can be relatively fixed between the stepped groove and the positioning pin 31 in an elastic abutting mode. That is, the first elastic member 32 is in a compressed state no matter in a state where the positioning pin 31 is fitted to the positioning hole or in a state where the positioning pin 31 is separated from the positioning hole, so that the first elastic member has an elastic acting force of restoring deformation, and the steering gear input shaft 10 and the yoke 20 can be mounted and dismounted while being fixed.

In addition, the dowel pin 31 may further include a plurality of pieces that are provided on the insert block 11 at intervals in the circumferential direction to further increase the coupling strength of the steering gear input shaft 10 and the yoke 20. For example, the positioning pins 31 may be two axially symmetrically disposed, so that the large ends of the two positioning pins 31 may be respectively connected to two ends of the same first elastic member 32 or the large ends of the two positioning pins 31 may respectively elastically abut against two ends of the same first elastic member 32, thereby further simplifying the connection structure.

According to another embodiment, referring to fig. 2 and 3, the insert 11 may be formed as a square block, and the insert 21 may be correspondingly formed as a square groove, such that the insert 11 and the insert 21 may prevent circumferential rotation of the steering gear input shaft 10 and the yoke 20 (i.e. the above-mentioned auxiliary limit), and may facilitate assembly of the two, and facilitate alignment and positioning of the floating limit stop 30 and the limit stop 40. In this embodiment, referring to fig. 5, the floating limiting member 30 may include a ball 33 capable of radially ejecting or retracting on the surface of the insert 11, and the limiting structure 40 may be correspondingly configured as an annular groove formed on the inner wall of the insertion groove 21. I.e. the steering gear input shaft 10 and the yoke 20 can be limited by the cooperation of the balls 33 and the annular groove. The annular groove in the present disclosure means that the annular groove is a continuous ring of annular groove-shaped structure formed on the inner wall of the slot 21 along the circumferential direction, and by providing such annular groove, the radial clamping installation of the ball 33 and the limiting structure 40 can be facilitated, and the increase of the assembling difficulty caused by the fact that the position of the limiting structure 40 cannot be judged from the outside by human eyes after the insert block 11 is inserted into the slot 21 is avoided. Wherein the annular groove may be configured as a spherical groove that is fitted with a part of the outer circumferential surface of the ball 33, the radial depth of the spherical groove being smaller than the radius of the ball 33, to enable the ball 33 to be attached to and detached from the annular groove. Thus, when the steering gear input shaft 10 and the universal joint fork 20 are connected, the ball 33 partially pops out of the surface of the insert block 11 along the radial direction and is mutually clamped and limited with the annular groove; when the two are disassembled, the part of the ball 33 which is clamped in the annular groove withdraws from the annular groove and retracts to the surface of the insert block 11. Furthermore, this embodiment of the annular groove is also adapted to the insertion of the square block into the square groove, i.e. in this embodiment, axial restraint of the steering gear input shaft 10 against the yoke 20 can be achieved by the cooperation of the balls 33 and the annular groove, while radial and circumferential restraint of the steering gear input shaft 10 against the yoke 20 can be achieved by the cooperation of the square block and the square groove. Of course, in other embodiments in which the insert 11 and the slot 21 are not configured as a square structure, the floating limiting member 30 may also be in the form of a ball 33, and the corresponding limiting structure 40 may be a hole structure disposed on the slot 21 or a limiting groove disposed on the inner wall of the slot 21 at intervals in the circumferential direction, which is not limited in this disclosure.

Further, referring to fig. 5, the floating limiting member 30 may further include a second elastic member 34 connected to the ball 33, so that the ball 33 may be ejected and retracted by the elastic action of the second elastic member 34. The second elastic member 34 may be a spring, for example. As shown in fig. 5, in order to fix the ball 33 on the insert 11, a tapered groove with an outward tapered opening may be formed on the surface of the insert 11 in the radial direction, and the second elastic member 34 and the ball 33 are sequentially placed in the tapered groove, and the second elastic member 34 is located at the bottom of the tapered groove. It should be noted here that the bottom of the tapered recess refers to the bottom of the groove of its own channel structure. The diameter of the ball 33 is larger than the diameter of the notch of the tapered groove, so as to prevent the ball 33 from falling off from the tapered groove, and further fix the ball 33 on the insert 11, and the tapered groove can provide a larger moving space for the second elastic member 34 and the ball 33, so that the movement of the two is more flexible. Thus, the two ends of the second elastic element 34 can be respectively and fixedly connected with the bottom of the tapered groove and the ball 33, when the insert 11 is inserted into the slot 21 along the axial direction, the ball 33 is pressed by the slot 21 to compress the second elastic element 34 and retract into the insert 11; after the insertion of the insert 11 is completed, the balls 33 are sprung out of the surface of the insert 11 by the restoring force of the second elastic member 34 and are engaged with the annular groove for limiting. The two ends of the second elastic part 34 can be respectively fixedly connected with the bottom of the tapered groove and the ball 33, and can also realize the relative fixation between the tapered groove and the ball 33 through an elastic abutting mode, namely, the second elastic part 34 is in a compression state no matter in the matching state of the ball 33 and the annular groove or in the state that the ball 33 is separated from the annular groove, so that the second elastic part has elastic acting force of restoring deformation, and the fixed installation of the second elastic part can be realized while the steering gear input shaft 10 and the universal joint fork 20 are assembled and disassembled. In the embodiment where the two ends of the second elastic element 34 elastically abut against the tapered groove and the ball 33, the ball 33 may also reduce the frictional resistance to the insertion groove 21 by rolling itself, so as to facilitate the rapid insertion of the insertion block 11 into the insertion groove 21.

In the above-mentioned embodiment where the floating limiting member 30 includes the positioning pin 31 and the first elastic member 32, and the floating limiting member 30 includes the ball 33 and the second elastic member 34, in addition to the engagement limiting function of the positioning pin 31 and the positioning hole, and the ball 33 and the annular groove, the positioning pin 31 and the ball 33 may respectively abut against the corresponding positioning hole and the annular groove under the elastic force of the first elastic member 32 and the second elastic member 34, so as to further ensure the installation strength of the steering gear input shaft 10 and the yoke 20, and prevent the two from being loose in assembly.

In addition, in order to further increase the connection strength between the steering gear input shaft 10 and the yoke 20, the balls 33 may further include a plurality of balls disposed on the insert 11 at intervals in the circumferential direction. For example, the two balls 33 may be axially symmetrically disposed, so that the two balls 33 may be respectively connected to two ends of the same second elastic member 34 or the two balls 33 may respectively elastically abut against two ends of the same second elastic member 34, thereby further simplifying the connection structure.

It should be noted that, in the embodiment that the insert block 11 and the insert slot 21 are configured in a square structure, the floating limiting member 30 may also be in a combination form of the positioning pin 31 and the first elastic member 32, which is not limited in this disclosure. Of course, the floating limit member 30 and the limit structure 40 may be configured in any structure other than the structures mentioned in the above embodiments of the present disclosure, as long as the fitting connection of the steering gear input shaft 10 and the yoke 20 can be achieved.

According to the embodiment provided by the present disclosure, a lubricating layer may be further disposed on one or both of the insert block 11 and the insert groove 21. That is, a lubricating layer, such as grease, may be provided on the outer peripheral surface of the insert 11 or the inner peripheral wall of the socket 21 to further facilitate the insertion of the two.

The present disclosure also provides a steering system and a vehicle equipped with the steering system, wherein the steering system includes the above-mentioned connection structure of the steering engine and the steering column, the vehicle has the above-mentioned steering system, and the steering system and the vehicle have all the beneficial effects of the connection structure of the steering engine and the steering column, and the details are not repeated here.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. The utility model provides a connection structure of steering engine and steering column, its characterized in that, including steering engine input shaft (10) and universal joint fork (20) that link to each other with the steering column, be provided with on steering engine input shaft (10) and float locating part (30), be formed with on universal joint fork (20) with locating part (30) complex limit structure (40) float, with the steering engine with steering column fixed connection.

2. The connection structure according to claim 1, wherein the steering gear input shaft (10) includes an axially disposed insert block (11) at an end portion, the yoke (20) includes an axially disposed insert groove (21) at an end portion for the insert block (11) to extend into, the floating limit member (30) is radially and telescopically disposed on the insert block (11), and the limit structure (40) is formed in the insert groove (21) and is capable of radially engaging with the floating limit member (30).

3. The connecting structure according to claim 2, wherein the floating limiting member (30) comprises a positioning pin (31) radially extendable or retractable on the surface of the insert block (11), and the limiting structure (40) is configured as a positioning hole radially opened on the insert groove (21).

4. The connection structure according to claim 3, wherein the positioning pin (31) is configured in a stepped shape, the floating stopper (30) further includes a first elastic member (32) connected to a large end of the positioning pin (31), a stepped groove is formed in a surface of the insert block (11) in a radial direction, the first elastic member (32) and the positioning pin (31) are sequentially placed in the stepped groove, and the first elastic member (32) is located at a bottom of the stepped groove.

5. The connection according to claim 2, characterized in that the insert (11) is formed as a square block, the insert groove (21) is formed as a square groove, the floating stop (30) comprises a ball (33) radially retractable on the surface of the insert (11), and the stop (40) is configured as an annular groove opening on the inner wall of the insert groove (21).

6. The connection structure according to claim 5, wherein the floating limit member (30) further comprises a second elastic member (34) connected to the ball (33), a tapered groove with an outward tapered opening is formed on the surface of the insert block (11) in the radial direction, the second elastic member (34) and the ball (33) are sequentially placed in the tapered groove, the second elastic member (34) is located at the bottom of the tapered groove, and the diameter of the ball (33) is larger than the diameter of the notch of the tapered groove.

7. The connection structure according to claim 5, wherein the balls (33) comprise a plurality of balls disposed at intervals in the circumferential direction on the insert block (11).

8. The connection structure according to any one of claims 2 to 7, wherein a lubricating layer is provided on one of the insert block (11) and the insert groove (21).

9. A steering system, characterized in that it comprises a connection structure of a steering gear according to any one of claims 1-8 to a steering column.

10. A vehicle characterized in that the vehicle comprises a steering system according to claim 9.