CN213262564U - Festival fork structure, steering column subassembly and car - Google Patents
Festival fork structure, steering column subassembly and car Download PDFInfo
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- CN213262564U CN213262564U CN202021724808.1U CN202021724808U CN213262564U CN 213262564 U CN213262564 U CN 213262564U CN 202021724808 U CN202021724808 U CN 202021724808U CN 213262564 U CN213262564 U CN 213262564U
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Abstract
The utility model discloses a festival fork structure, steering column subassembly and car relates to festival fork technical field, include: the joint fork body is provided with a fork-shaped part at one end and a connecting part at the other end; the connecting hole is communicated from the bottom of the connecting part to the fork-shaped part, an opening is formed in the hole wall of one side of the connecting hole, and locking holes are formed in two side walls of the opening; a positioning groove is formed in the hole wall of one side, opposite to the opening, of each connecting hole, an internal spline is arranged on the hole wall of each connecting hole on the two sides of each positioning groove, and the hole walls of the connecting holes on the two sides of the opening are unthreaded holes; an acoustic baffle assembly comprising: the first sound insulation piece is in a sheet shape and is arranged in the positioning groove; and the second sound insulation piece comprises a first part and a second part, wherein the first part is arranged in the opening, and the second part is attached to the inner wall of the unthreaded hole. This section fork structure removes the internal spline near the opening of section fork, shifts locking load to keeping away from on the section fork open-ended internal spline for the atress of section fork locking back internal spline is more even, noise abatement.
Description
Technical Field
The utility model belongs to the technical field of the festival fork, more specifically relates to a festival fork structure, steering column subassembly and car.
Background
The abnormal sound of the automobile steering system is a fault mode with the highest complaining rate of the steering system, is a key index for measuring the quality of the whole automobile, and is a problem which is always focused by suppliers of the whole automobile and parts at home and abroad. With the wide popularization of electric power steering systems of automobiles, a column power-assisted structure is widely applied due to the fact that the structure is simple and arrangement is convenient. Compared with the traditional hydraulic power assistance, gear electric power assistance and rack electric power assistance, the torque borne by the intermediate shaft of the tubular column type electric power assistance steering is higher and can reach tens times of the former types; particularly, the development requirements of pure electric and hybrid vehicles are increased at present, the load of a front shaft of the whole vehicle is continuously improved, and the torque borne by a middle shaft of an electric power steering Column (CEPS) can even be as high as more than 90 N.m. In the design of some vehicle models, based on the consideration of platformization and universalization, the design scheme of an intermediate shaft of a hydraulic power steering system (HPS) or a gear or rack electric power steering system (P/REPS) is still used, the change of load borne by the intermediate shaft is not fully considered, and the problems of abnormal sound of a pitch fork spline, loose bolts and the like appear in the later period are not fully considered.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the not enough that exists among the prior art, provide a festival fork structure, steering column subassembly and car, this festival fork structure starts from the atress distribution that improves the internal spline of festival fork, removes the internal spline near the opening of festival fork, shifts the locking load to keeping away from on the festival fork open-ended internal spline for the atress of internal spline is more even after the festival fork locking, eliminates the flank clearance of the key tooth of internal spline, the noise abatement.
In order to achieve the above object, the utility model provides a festival fork structure, include:
the joint fork body is provided with a fork-shaped part at one end and a connecting part at the other end;
the connecting hole is communicated from the bottom of the connecting part to the fork-shaped part, an opening is formed in the hole wall of one side of the connecting hole, and locking holes are formed in two side walls of the opening;
a positioning groove is formed in the hole wall of one side, opposite to the opening, of the connecting hole, an internal spline is arranged on the hole wall of the connecting hole on the two sides of the positioning groove, and the hole walls of the connecting hole on the two sides of the opening are unthreaded holes;
an acoustic baffle assembly comprising:
the first sound insulation piece is in a sheet shape and is arranged in the positioning groove;
and the second sound insulation piece comprises a first part and a second part, the first part is arranged in the opening, and the second part is attached to the inner wall of the light hole.
Optionally, the sound insulation assembly further comprises a sound insulation pad, the sound insulation pad is arranged at one end of the connecting hole close to the forked portion, and the sound insulation pad seals the connecting hole.
Optionally, the first and second sound insulating members are vulcanized rubber, the first sound insulating member is molded in the positioning groove by a vulcanization process, and the first and second portions of the second sound insulating member are molded in the opening and on the inner wall of the light hole, respectively, by a vulcanization process.
Optionally, the locking hole penetrates through the first portion of the second sound insulating member, the locking hole includes a threaded hole portion and a through hole portion, and the threaded hole portion and the through hole portion are respectively provided on both side walls of the opening.
Optionally, a vent hole is formed through the first portion, and a vent hole plug is detachably disposed in the vent hole.
Optionally, the sound insulation pad is made of sound absorption cotton, and the sound insulation pad is glued to one end of the connecting hole.
Optionally, the first part of the second sound insulating member and the first sound insulating member are provided with an assembly structure, the assembly structure is provided on a side where the first part of the second sound insulating member and the first sound insulating member are close to each other, and the assembly structure includes an assembly introduction portion, a connection fitting portion, a mute introduction portion, and a sound insulating portion, which are sequentially provided in a direction of the forked portion along the bottom of the connecting portion. Optionally, the fork-shaped portion includes two fork bodies, a cross-shaped shaft hole is formed in each fork body, and axes of the two cross-shaped shaft holes are collinear.
The utility model also provides a steering column subassembly, include:
the above-mentioned yoke structure;
one end of the steering gear shaft penetrates through the connecting hole, and an external spline matched with the internal spline is arranged on the periphery of the one end of the steering gear shaft;
and the steering transmission shaft is connected with the fork-shaped part through an intermediate shaft, and the intermediate shaft is arranged in the cross shaft hole in a penetrating way.
The utility model also provides an automobile, including foretell steering column subassembly.
The utility model provides a festival fork structure, steering column subassembly and car, its beneficial effect lies in:
1. compared with the traditional joint fork structure, the joint fork structure removes the internal splines at two sides of the opening on the joint fork body, and transfers the locking load to the internal spline far away from the opening of the joint fork, so that the stress of the internal spline is more uniform after the joint fork is locked, the tooth side clearance of the key teeth of the internal spline is eliminated, and the noise is reduced;
2. the joint fork structure is also provided with a sound insulation component, the sound insulation component fills the positioning groove through the first sound insulation piece, and fills the inner walls of the opening and the unthreaded hole through the second sound insulation piece, so that the propagation of abnormal sound and noise is reduced;
3. the subassembly that gives sound insulation still includes and gives sound insulation fills up, gives sound insulation and fills up the one end shutoff of connecting hole, further isolated abnormal sound, noise reduction to be provided with the air vent on the second sound insulation, can guarantee the discharge of connecting hole internal air when the steering gear shaft inserts the connecting hole and assembles, convenient assembly.
4. All be provided with assembly structure on the first part of first sound insulating part and second sound insulating part, play the guide effect when the steering gear shaft inserts the connecting hole and assembles, closely cooperate with the steering gear shaft after the assembly is accomplished, play syllable-dividing effect.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.
Fig. 1 shows a three-dimensional structural schematic diagram of a yoke body of a yoke structure according to an embodiment of the present invention.
Fig. 2 shows a front view structural schematic diagram of a yoke body of a yoke structure according to an embodiment of the present invention.
Fig. 3 shows a schematic side view of a yoke body of a yoke structure according to an embodiment of the present invention.
Fig. 4 shows a schematic sectional view of a direction a of a yoke structure according to an embodiment of the present invention.
Fig. 5 shows a schematic B-direction cross-sectional structure of a yoke structure according to an embodiment of the present invention.
Fig. 6 shows a partially enlarged schematic structural diagram of fig. 5 according to an embodiment of the present invention.
Description of reference numerals:
1. a yoke body; 2. a fork-shaped portion; 3. a connecting portion; 4. connecting holes; 5. an opening; 6. a locking hole; 7. positioning a groove; 8. an internal spline; 9. a light hole; 10. a first sound insulating member; 11. a second sound insulating member; 12. a sound insulating pad; 13. a threaded hole portion; 14. a through hole portion; 15. a vent hole; 16. a vent hole plug; 17. an assembly lead-in; 18. a connection fitting portion; 19. a mute introduction section; 20. a sound insulating section; 21. a cross axle hole.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The utility model provides a festival fork structure, include:
the joint fork body is provided with a fork-shaped part at one end and a connecting part at the other end;
the connecting hole is communicated from the bottom of the connecting part to the fork-shaped part, an opening is formed in the hole wall of one side of the connecting hole, and locking holes are formed in two side walls of the opening;
a positioning groove is formed in the hole wall of one side, opposite to the opening, of each connecting hole, an internal spline is arranged on the hole wall of each connecting hole on the two sides of each positioning groove, and the hole walls of the connecting holes on the two sides of the opening are unthreaded holes;
an acoustic baffle assembly comprising:
the first sound insulation piece is in a sheet shape and is arranged in the positioning groove;
and the second sound insulation piece comprises a first part and a second part, wherein the first part is arranged in the opening, and the second part is attached to the inner wall of the unthreaded hole.
Specifically, the joint fork body is integrally U-shaped, the fork-shaped part is the opening end of the U-shape, and the connecting part is the other end of the U-shape; the connecting hole is used for penetrating through a steering engine gear shaft, the opening is reduced through the locking effect of the locking hole and the locking screw, the steering engine gear shaft is fixed in the connecting hole, and transmission is realized through the matching of the spline; the locking hole is vertical to the opening and penetrates through the side wall of the opening, and the positioning groove can be matched with the positioning part on the steering engine gear shaft to realize assembly positioning; the inner wall of the existing connecting hole is full of internal splines except for the opening and the positioning groove, after the opening is locked, the internal splines near the opening are greatly deformed, locking load is concentrated at a plurality of internal splines at two sides of the opening, so that the internal splines are unevenly stressed, tooth side gaps of key teeth of the internal splines are easily generated, and abnormal sound is generated; the inner splines on two sides of the opening on the yoke body are removed from the yoke body of the yoke structure, and the locking load is transferred to the inner splines far away from the yoke opening, so that the stress of the inner splines is more uniform after the yoke is locked, the tooth side clearance of the key teeth of the inner splines is eliminated, and the noise is reduced; the constant head tank is filled through first syllable-dividing piece to the subassembly that gives sound insulation, fills the inner wall of opening and unthreaded hole through the second syllable-dividing piece, reduces the propagation of abnormal sound and noise.
Optionally, the acoustic assembly further comprises an acoustic pad disposed at an end of the attachment aperture proximate the forked portion, the acoustic pad plugging the attachment aperture.
Specifically, the steering engine gear shaft is inserted in the connecting hole by the bottom of connecting portion, and gives sound insulation and fills up the connecting hole shutoff, and noise and abnormal sound in the further isolated connecting hole spread, improve syllable-dividing effect.
Alternatively, the first and second sound insulating members are vulcanized rubber, the first sound insulating member is molded in the positioning groove by a vulcanization process, and the first and second portions of the second sound insulating member are molded in the opening and on the inner wall of the unthreaded hole, respectively, by a vulcanization process.
Specifically, first sound insulating member and second sound insulating member adopt vulcanization technology directly to mould on the festival fork body for first sound insulating member and second sound insulating member and festival fork body formula structure as an organic whole, and simple process saves operating space.
Optionally, the locking hole penetrates through the first portion of the second sound insulating member, and the locking hole includes a threaded hole portion and a through hole portion, which are respectively opened on both side walls of the opening.
Specifically, the locking screw can penetrate through the through hole part of the locking hole, and is screwed into the threaded hole part, so that the two side walls of the opening deform through locking of the locking screw, the opening is reduced, and locking of the steering gear shaft in the connecting hole is realized.
Optionally, a vent hole is formed through the first portion, and a vent hole plug is detachably arranged in the vent hole.
Specifically, because the sound insulation pad blocks one end of the connecting hole, when the steering engine gear shaft is inserted into the connecting hole, the air in the connecting hole can be discharged through the vent hole, and the insertion and assembly of the steering engine gear shaft are facilitated; use the vent hole stopper with the air vent shutoff after the assembly is accomplished, avoid the air vent to influence syllable-dividing effect.
Optionally, the sound insulation pad is made of sound absorption cotton, and the sound insulation pad is glued to one end of the connecting hole.
Optionally, the first part of the second sound insulating member and the first sound insulating member are provided with an assembly structure, the assembly structure is arranged on one side of the first part of the second sound insulating member, which is close to the first sound insulating member, and the assembly structure comprises an assembly introduction portion, a connection fitting portion, a mute introduction portion and a sound insulating portion, which are sequentially arranged in the direction from the bottom of the connecting portion to the forked portion.
Specifically, the assembly guiding-in part is an inclined plane, the outer end of the assembly guiding-in part is close to the bottom of the connecting part, and the opening size of the outer end of the assembly guiding-in part is larger than that of the inner end of the assembly guiding-in part, so that a guiding effect can be provided when the steering engine gear shaft is inserted; the connection matching part is flush with the inner end of the assembly lead-in part; the shape of silence leading-in portion is the same with the shape of assembly leading-in portion, is the inclined plane structure that outer end opening size is greater than inner end opening size, can realize the guide effect when noise insulation portion and steering engine gear shaft interference fit, easily assembles.
Optionally, the fork-shaped part comprises two fork bodies, a cross-shaped shaft hole is formed in each fork body, and the axes of the two cross-shaped shaft holes are collinear.
Specifically, the cross axle hole is used for penetrating through the cross axle.
The utility model also provides a steering column subassembly, include:
the above-mentioned yoke structure;
one end of the steering gear shaft penetrates through the connecting hole, and an external spline matched with the internal spline is arranged on the periphery of one end of the steering gear shaft;
the steering transmission shaft is connected with the fork-shaped part through the intermediate shaft, and the intermediate shaft is arranged in the cross shaft hole in a penetrating mode.
The utility model also provides an automobile, including foretell steering column subassembly.
Examples
As shown in fig. 1 to 6, the utility model provides a yoke structure, include:
the joint fork comprises a joint fork body 1, wherein one end of the joint fork body is a fork-shaped part 2, and the other end of the joint fork body is a connecting part 3;
the connecting hole 4 is formed from the bottom of the connecting part 3 to the fork-shaped part 2 in a penetrating way, an opening 5 is formed in the hole wall of one side of the connecting hole 4, and locking holes 6 are formed in the two side walls of the opening 5;
a positioning groove 7 is arranged on the hole wall of one side of the connecting hole 4 opposite to the opening 5, an internal spline 8 is arranged on the hole wall of the connecting hole 4 at two sides of the positioning groove 7, and the hole wall of the connecting hole 4 at two sides of the opening is a unthreaded hole 9;
an acoustic baffle assembly comprising:
the first sound insulating member 10 is in a sheet shape and is arranged in the positioning groove 7;
the second acoustic barrier 11 comprises a first portion disposed within the opening 5 and a second portion that is attached to the inner wall of the light aperture 9.
In this embodiment, the acoustic insulating assembly further includes an acoustic insulating pad 12, the acoustic insulating pad 12 being disposed at an end of the attachment hole 4 near the forked portion 2, the acoustic insulating pad 12 blocking the attachment hole 4.
In the present embodiment, the first sound insulating member 10 and the second sound insulating member 11 are vulcanized rubber, the first sound insulating member 10 is molded in the positioning groove 7 through a vulcanization process, and the first portion and the second portion of the second sound insulating member 11 are molded in the opening 5 and on the inner wall of the light hole 9, respectively, through a vulcanization process.
In the present embodiment, the locking hole 6 penetrates the first portion of the second soundproof member 11, and the locking hole 6 includes a threaded hole portion 13 and a through hole portion 14, and the threaded hole portion 13 and the through hole portion 14 are opened on both side walls of the opening 5, respectively.
In this embodiment, a vent hole 15 is formed through the first portion, and a vent plug 16 is detachably provided in the vent hole 15.
In this embodiment, the material of the sound insulation pad 12 is sound-absorbing cotton, and the sound insulation pad 12 is glued to one end of the connection hole 4.
In the present embodiment, the first part of the second sound insulating member 11 and the first sound insulating member 10 are provided with the fitting structure provided on the side where the first part of the second sound insulating member 11 and the first sound insulating member 10 are close to each other, and the fitting structure includes the fitting introduction portion 17, the connection fitting portion 18, the silence introduction portion 19, and the sound insulating portion 20, which are provided in this order in the direction of the forked portion 2 along the bottom of the connecting portion 3.
In this embodiment, the fork-shaped part 2 includes two fork bodies, and a cross axle hole 21 is opened on the fork body, and the axes of the two cross axle holes 21 are collinear.
The utility model also provides a steering column subassembly, include:
the above-mentioned yoke structure;
one end of the steering gear shaft penetrates through the connecting hole, and an external spline matched with the internal spline is arranged on the periphery of one end of the steering gear shaft;
the steering transmission shaft is connected with the fork-shaped part through the intermediate shaft, and the intermediate shaft is arranged in the cross shaft hole in a penetrating mode.
The utility model also provides an automobile, including foretell steering column subassembly.
To sum up, when the joint yoke structure provided by the utility model is used, the joint yoke structure is connected with the intermediate shaft through the cross shaft hole 21 on the yoke body, so that the joint yoke structure is connected with the steering transmission shaft, and the gear shaft of the steering engine is inserted into the connecting hole 4 to realize transmission through spline fit; then the opening 5 is locked through the locking hole 6 and the locking screw, and the assembly of the steering gear and the joint fork body 1 is realized. This festival fork structure goes out first sound insulating part 10 through the vulcanization technology shaping in the constant head tank 7 on festival fork body 1, goes out second sound insulating part 11 through the vulcanization technology shaping in opening 5 and on the inner wall of unthreaded hole 9, the propagation of noise abatement and abnormal sound to adopt pressure equipment to glue the technology and make the sound insulating pad 12 with the shutoff of connecting hole 4, further noise abatement and abnormal sound. Simultaneously, because this section fork structure compares with traditional section fork structure and has removed the internal spline 8 of opening 5 both sides on the section fork body 1, shift locking load to on keeping away from section fork opening 5's internal spline 8 for the atress of internal spline 8 is more even behind the section fork body 1 locking, eliminates the flank clearance of the key tooth of internal spline 8, reduces the production of noise.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A yoke structure, comprising:
the joint fork body is provided with a fork-shaped part at one end and a connecting part at the other end;
the connecting hole is communicated from the bottom of the connecting part to the fork-shaped part, an opening is formed in the hole wall of one side of the connecting hole, and locking holes are formed in two side walls of the opening;
a positioning groove is formed in the hole wall of one side, opposite to the opening, of the connecting hole, an internal spline is arranged on the hole wall of the connecting hole on the two sides of the positioning groove, and the hole walls of the connecting hole on the two sides of the opening are unthreaded holes;
an acoustic baffle assembly comprising:
the first sound insulation piece is in a sheet shape and is arranged in the positioning groove;
and the second sound insulation piece comprises a first part and a second part, the first part is arranged in the opening, and the second part is attached to the inner wall of the light hole.
2. The yoke structure of claim 1 wherein the acoustic assembly further comprises an acoustic insulator pad disposed at an end of the attachment aperture proximate the forked portion, the acoustic insulator pad sealing the attachment aperture.
3. The yoke structure as claimed in claim 1, wherein the first and second sound insulating members are vulcanized rubber, the first sound insulating member is molded in the positioning groove by a vulcanization process, and the first and second portions of the second sound insulating member are molded in the opening and on the inner wall of the light hole, respectively, by a vulcanization process.
4. The yoke structure as claimed in claim 1, wherein the locking hole penetrates the first portion of the second noise insulating member, the locking hole includes a threaded hole portion and a through hole portion, the threaded hole portion and the through hole portion being opened on both side walls of the opening, respectively.
5. The yoke structure as claimed in claim 1, wherein a vent hole is opened through the first portion, and a vent hole plug is detachably provided in the vent hole.
6. The yoke structure as claimed in claim 2, wherein the soundproof pad is made of sound absorbing cotton, and the soundproof pad is glued to the one end of the connection hole.
7. The joint yoke structure according to claim 1, wherein a fitting structure is provided on the first portion of the second sound insulating member and the first sound insulating member, the fitting structure being provided on a side where the first portion of the second sound insulating member and the first sound insulating member are close to each other, the fitting structure including a fitting introduction portion, a connection fitting portion, a silence introduction portion, and a sound insulating portion which are provided in this order in a direction of the fork portion along a bottom of the connecting portion.
8. The yoke structure as claimed in claim 1, wherein the fork portion includes two fork bodies, and a cross shaft hole is formed in the fork bodies, and axes of the two cross shaft holes are collinear.
9. A steering column assembly, comprising:
a yoke structure according to any one of claims 1-8;
one end of the steering gear shaft penetrates through the connecting hole, and an external spline matched with the internal spline is arranged on the periphery of the one end of the steering gear shaft;
and the steering transmission shaft is connected with the fork-shaped part through an intermediate shaft, and the intermediate shaft is arranged in the cross shaft hole in a penetrating way.
10. An automobile, comprising the steering column assembly of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021724808.1U CN213262564U (en) | 2020-08-18 | 2020-08-18 | Festival fork structure, steering column subassembly and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021724808.1U CN213262564U (en) | 2020-08-18 | 2020-08-18 | Festival fork structure, steering column subassembly and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213262564U true CN213262564U (en) | 2021-05-25 |
Family
ID=75973455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021724808.1U Active CN213262564U (en) | 2020-08-18 | 2020-08-18 | Festival fork structure, steering column subassembly and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213262564U (en) |
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2020
- 2020-08-18 CN CN202021724808.1U patent/CN213262564U/en active Active
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