CN112810691A - Electric steering column worm gear mechanism, electric steering system and vehicle - Google Patents
Electric steering column worm gear mechanism, electric steering system and vehicle Download PDFInfo
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- CN112810691A CN112810691A CN202110277142.2A CN202110277142A CN112810691A CN 112810691 A CN112810691 A CN 112810691A CN 202110277142 A CN202110277142 A CN 202110277142A CN 112810691 A CN112810691 A CN 112810691A
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- Prior art keywords
- worm
- gear mechanism
- worm gear
- electric steering
- steering column
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
- B62D3/04—Steering gears mechanical of worm type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0409—Electric motor acting on the steering column
Abstract
The invention discloses an electric steering column worm gear mechanism, an electric steering system and a vehicle, wherein the electric steering column worm gear mechanism comprises: the method comprises the following steps: a housing; the worm wheel and the worm are arranged in the shell and are meshed and connected, and two ends of the worm are connected with the shell through a first bearing and a second bearing respectively; the motor shaft is rotatably arranged in the shell and provided with a coupling assembly, the coupling assembly is connected with one end of the worm, which penetrates through the first bearing, and the motor shaft and the worm are eccentrically arranged and are adjacent to the turbine; and an elastic member coupled to the housing, the second bearing being mounted to the elastic member, the elastic member being configured and adapted to provide a force to the second bearing toward the turbine. According to the electric steering column worm gear mechanism, the new vehicle and the durable steering system have good performance in evaluating the ratele noise on a bumpy road, and the electric steering column worm gear mechanism is simple in design and easy to control.
Description
Technical Field
The invention relates to the field of vehicle steering, in particular to an electric steering column worm gear mechanism, an electric steering system and a vehicle.
Background
With the rapid development of automobile technology, electric and intelligent automobiles are gradually popularized. The traditional hydraulic steering system can not meet the requirements of electromotion, intellectualization and energy conservation and is gradually eliminated. Most of the types of passenger vehicles on the market at present adopt an electric power steering system (EPS). The EPS steering system may be classified into a column assist type steering system (CEPS), a gear assist type steering system (PEPS), and a rack assist type steering system (REPS). The PEPS and REPS systems are positioned outside the cab, so that a driver cannot easily perceive noise (ratele noise) generated by a bumpy road system, NVH performance is good, but cost is high. CEPS occupies small space, is easy to arrange, has relatively low cost and obvious advantages. At present, most domestic China brands of passenger vehicles adopt a CEPS system. The CEPS is arranged in the cab, and the driver is easy to perceive the ratele noise generated by bumpy road surfaces, so that the comfort is reduced.
In the related art, most of the gap compensation mechanisms adopted by the electric steering column worm gear mechanism only can adjust the gap when leaving a factory, cannot compensate for durable wear, and has the disadvantages of complex design, difficult process control and poor effect.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a turbine worm mechanism of an electric steering column, which can enable a new vehicle and a durable steering system to have good performance in evaluating ratele noise on a bumpy road, and is simple in design and easy to control.
The invention also provides an electric steering column worm gear mechanism with the electric steering column worm gear mechanism.
The invention also provides a vehicle with the electric power steering system.
An electric steering column worm gear mechanism according to a first aspect of the present invention includes: a housing; the worm wheel and the worm are arranged in the shell and are meshed and connected, and two ends of the worm are connected with the shell through a first bearing and a second bearing respectively; the motor shaft is rotatably arranged in the shell, a coupling assembly is arranged at the output end of the motor shaft, the coupling assembly is connected with one end of the worm, which penetrates through the first bearing, and the motor shaft and the worm are eccentrically arranged and are adjacent to the turbine; a resilient member coupled to the housing, the second bearing being mounted to the resilient member, the resilient member being configured and adapted to provide a force to the second bearing toward the turbine.
According to the electric steering column worm gear mechanism, the motor shaft and the worm are eccentric and are adjacent to the worm gear, the elastic piece is configured to provide acting force towards the worm gear to the second bearing, so that acting force towards the worm gear direction can be applied to one end of the worm gear, the other end of the worm gear tends to be far away from the worm gear, due to the acting force and the reacting force, the elastic piece can apply acting force towards the worm gear direction to the second bearing, so that the gap between the worm gear and the worm gear can be reduced, and further, a new vehicle and a durable steering system can well perform evaluation ratetle noise on a bumpy road, and the electric steering column worm gear mechanism is simple in design and easy to control.
In some embodiments of the invention, the coupling assembly comprises: the motor shaft comprises a first hub, a second hub and a coupler, wherein the first hub is arranged at the output end of the motor shaft, the second hub is arranged at one end of the worm, and the first hub is connected with the second hub through the coupler.
In some embodiments of the invention, the second hub is provided with a fixing hole through which a threaded fastener is passed to connect with the worm.
In some embodiments of the present invention, a plurality of first fitting protrusions are disposed on an outer circumferential wall of the first hub, a plurality of second fitting recesses are disposed on an outer circumferential wall of the second hub, a plurality of fitting recesses adapted to be fitted with the plurality of first fitting protrusions and the plurality of second fitting protrusions in a one-to-one correspondence are disposed on an inner circumferential wall of the coupling, and the first fitting protrusions and the second fitting protrusions are spaced apart in an axial direction of the coupling.
In some embodiments of the invention, the elastic member comprises: an outer race connected to the housing; an inner ring positioned within the outer ring, a gap being present between the inner ring and the outer ring; and the mounting pin penetrates through the outer ring and is connected with the inner ring.
In some embodiments of the invention, the inner circumferential wall of the outer ring is provided with a first protruding portion, the first protruding portion abuts against the inner ring, and the mounting pin passes through the first protruding portion and is connected with the inner ring.
In some embodiments of the invention, the outer circumferential wall of the inner ring is provided with a second protruding portion, the second protruding portion abuts against the inner circumferential wall of the outer ring, and the mounting pin passes through the outer ring and is connected with the second protruding portion.
In some embodiments of the invention, the mounting pin is a plastic piece.
A steering system according to a second aspect of the present invention includes: an electric steering column worm gear mechanism according to a first aspect of the invention.
According to the steering system of the second aspect of the invention, by arranging the electric steering column worm gear mechanism of the first aspect, the gap between the worm gear and the worm can be reduced, so that the new vehicle and the durable steering system have good performance in evaluating the ratele noise on a bumpy road, and the overall performance of the steering system is improved.
A vehicle according to a third aspect of the invention includes: an electric power steering system according to a second aspect of the invention.
According to the vehicle of the third aspect of the present invention, by providing the electric power steering system of the second aspect, it is advantageous to improve the overall performance of the vehicle.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of an electric steering column worm gear mechanism according to one embodiment of the present invention;
FIG. 2 is a cross-sectional schematic view of an electric steering column worm gear mechanism according to one embodiment of the present invention;
FIG. 3 is a schematic view of the construction of the output end of a motor shaft according to one embodiment of the present invention;
FIG. 4 is an isometric view of a first bearing according to an embodiment of the invention;
FIG. 5 is an isometric view of a second bearing according to an embodiment of the invention;
FIG. 6 is an isometric view of a threaded fastener according to an embodiment of the present invention;
FIG. 7 is an isometric view of a coupling according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a first bearing according to one embodiment of the present invention;
FIG. 9 is a schematic structural view of a worm according to one embodiment of the present invention;
FIG. 10 is a schematic view of the structure of a spring according to one embodiment of the invention;
FIG. 11 is a front view of a spring according to one embodiment of the present invention;
FIG. 12 is a schematic structural view of a second bearing according to one embodiment of the present invention;
FIG. 13 is an assembly schematic of the worm, first bearing, second bearing and resilient member according to one embodiment of the present invention;
FIG. 14 is a schematic structural view of a housing according to one embodiment of the present invention;
FIG. 15 is an enlarged partial view of an electric steering column worm gear mechanism according to one embodiment of the present invention.
Reference numerals:
an electric steering column worm gear mechanism 100;
a housing 10; a first mounting cavity 11; a second mounting cavity 12;
a turbine 20; a worm shaft 30; a first bearing 40; a second bearing 50;
a motor shaft 60; an external spline 61;
a coupling assembly 70; a first hub 71; a first fitting protrusion 711; an internal spline 712; a second hub 72; the second fitting projection 721; a fixing hole 722; a coupling 73; the fitting recess 731; a threaded fastener 74;
an elastic member 80; an outer ring 81; a first boss 811; an inner race 82; a second boss 812; and a pin 83 is installed.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.
An electric steering column worm gear mechanism 100, an electric power steering system, and a vehicle according to an embodiment of the present invention are described below with reference to fig. 1 to 15.
Referring to fig. 1 to 2, an electric steering column worm gear mechanism 100 according to an embodiment of the first aspect of the present invention may include a housing 10, a worm gear 20, a worm shaft 30, a first bearing 40, a second bearing 50, a motor shaft 60, a coupling assembly 70, and an elastic member 80.
Referring to fig. 1-2, the worm wheel 20 and the worm shaft 30 are disposed in the housing 10, the worm wheel 20 and the worm shaft 30 are engaged with each other, and both ends of the worm shaft 30 are connected to the housing 10 through a first bearing 40 and a second bearing 50, respectively, for example, the housing 10 is provided with a first mounting cavity 11 and a second mounting cavity 12 (refer to fig. 14), the first mounting cavity 11 is communicated with the second mounting cavity 12, the worm wheel 20 is disposed in the first mounting cavity 11, and the worm shaft 30 is disposed in the second mounting cavity 12.
Referring to fig. 2 and 3, the motor shaft 60 is rotatably disposed in the housing 10, the output end of the motor shaft 60 is provided with a coupling assembly 70, the coupling assembly 70 is connected to one end of the worm shaft 30 passing through the first bearing 40, the motor shaft 60 is eccentrically disposed with the worm shaft 30 and adjacent to the worm wheel 20, in other words, the rotation center line of the motor shaft 60 and the rotation center line of the worm shaft 30 are not on the same straight line, and the center axis of the motor shaft 60 is located on the side of the center axis of the worm shaft 30 close to the worm wheel 20. It will be appreciated that the motor shaft 60 provides an assist force during driver steering, which is transmitted through the coupling assembly 70 to the worm 30 and then through the worm gear 20 to the steering shaft to assist the driver in steering, and that the operation and working principle of the electric steering column worm gear mechanism 100 to assist steering is known to those skilled in the art and will not be described in detail herein.
Referring to fig. 15, the elastic member 80 is connected to the housing 10, the second bearing 50 is mounted to the elastic member 80, and the elastic member 80 is configured and adapted to provide a force to the second bearing 50 toward the turbine 20.
In actual research, the inventors found that clearances exist between the worm wheel and the worm, between the worm wheel and the coupling assembly, between the first bearing and the second bearing, and between the worm wheel and the worm and between the worm wheel and the coupling assembly. The clearance value inside the mechanism is too small, so that the problems that the electric steering column worm gear mechanism has large no-load rotation torque value and unsmooth driving direction and the like can be caused. Too large a gap value causes problems such as "dendendenuded" abnormal sound in the hitting direction and rattle road rate noise.
In order to solve the problems of "anchor" noise in the hitting direction and the road roll noise, in the present application (see fig. 15), by making the motor shaft 60 and the worm shaft 30 eccentric and adjacent to the turbine 20, the motor shaft 60 can apply a force toward the turbine 20 to one end of the worm shaft 30 through the coupling assembly 70, and the other end of the worm shaft 30 tends to move away from the turbine 20, the elastic member 80 is compressed to deform, and due to the force and the reaction force, the elastic member 80 applies a force toward the turbine 20 to the second bearing 50, that is, a force toward the center of the turbine 20 exists at both ends of the worm shaft 30, in other words, the motor shaft 60 and the elastic member 80 work together to provide a pre-pressure, so that the worm shaft 30 and the turbine 20 can be tightly attached, the gap between the turbine 20 and the worm shaft 30 can be reduced, the pre-pressure still exists after endurance, and thus the performance attenuation is small, the method avoids the rate noise of the bumpy road surface before and after endurance, further ensures that the new vehicle and the steering system after endurance have good performance in evaluating the rate noise of the bumpy road, and has simple design and easy control.
In view of this, according to the electric steering column worm gear mechanism 100 of the first embodiment of the present invention, the motor shaft 60 is eccentric to the worm shaft 30 and is adjacent to the worm wheel 20, and the elastic member 80 is configured to provide a force toward the worm wheel 20 to the second bearing 50, so that a force toward the worm wheel 20 can be applied to one end of the worm shaft 30, and the other end of the worm shaft 30 tends to be away from the worm wheel 20, and due to the force and the reaction force, the elastic member 80 applies a force toward the worm wheel 20 to the second bearing 50, so that the gap between the worm wheel 20 and the worm shaft 30 can be reduced, and thus the new vehicle and the durable steering system can perform well in the estimation of the bump road rate (rattle) noise, and the design is simple and easy to control.
In some embodiments of the present invention, and as illustrated with reference to fig. 4-7, the coupling assembly 70 includes: the first hub 71 is arranged at the output end of the motor shaft 60, the second hub 72 is arranged at one end of the worm 30, and the first hub 71 and the second hub 72 are connected through the coupler 73. Therefore, the structure is simple, the eccentric arrangement of the motor shaft 60 and the worm 30 is convenient to realize, the installation is convenient, and the improvement of the production efficiency is facilitated. For example, referring to fig. 3 and 4, the motor shaft 60 is provided with external splines 61, and the first hub 71 is provided with internal splines 712 adapted to mate with the external splines 61, thereby facilitating installation and securing the connection.
In some alternative embodiments of the invention, as shown with reference to fig. 5 and 6, the second hub 72 is provided with a fixing hole 722, and the threaded fastener 74 is connected to the worm shaft 30 through the fixing hole 722. It will be appreciated that the threaded fastener 74 has the advantage of being simple in construction and easy to assemble, with the threaded fastener 74 providing a tight connection of the second hub 72 to the worm shaft 30. In addition, the cost can be reduced while the connection strength of the second hub 72 and the worm shaft 30 is ensured. Alternatively, the threaded fasteners 74 may be screws, bolts, or studs.
In some alternative embodiments of the present invention, as shown in fig. 4 to 7 and fig. 15, the outer circumferential wall of the first hub 71 is provided with a plurality of first fitting protrusions 711, the outer circumferential wall of the second hub 72 is provided with a plurality of second fitting protrusions 721, the inner circumferential wall of the coupling 73 is provided with a plurality of fitting recesses 731 adapted to be fitted with the plurality of first fitting protrusions 711 and the plurality of second fitting protrusions 721 in a one-to-one correspondence, and the first fitting protrusions 711 and the second fitting protrusions 721 are arranged at intervals in the axial direction of the coupling 73. Therefore, the first hub 71, the second hub 72 and the coupler 73 can be assembled conveniently, the contact area among the first hub 71, the second hub 72 and the coupler 73 can be increased, and the reliability of the coupler assembly 70 can be improved. Alternatively, as shown in fig. 4 to 5, the plurality of first fitting protrusions 711 are evenly spaced on the outer circumferential wall of the first hub 71, and the plurality of second fitting protrusions 721 are evenly spaced on the outer circumferential wall of the second hub 72.
In some embodiments of the present invention, referring to fig. 10 to 11, the elastic member 80 may be a bearing bush having a certain elasticity, and the elastic member 80 includes: the mounting structure comprises an outer ring 81, an inner ring 82 and a mounting pin 83, wherein the outer ring 81 is connected with the shell 10, the inner ring 82 is positioned in the outer ring 81, a gap exists between the inner ring 82 and the outer ring 81, and the mounting pin 83 penetrates through the outer ring 81 to be connected with the inner ring 82. Therefore, the elastic force exists between the outer ring 81 and the inner ring 82, and the structure is simple and easy to produce and manufacture. Of course, the present invention is not limited thereto, and the elastic member 80 may have other structures, for example, the elastic member 80 may be formed as a spring connected between the housing 10 and the second bearing 50, as long as the elastic member 80 is configured to provide a force to the second bearing 50 toward the turbine 20, which is within the protection scope of the present invention.
For example, referring to fig. 13 and 15, the inner race 82 is fitted with the second bearing 50 (see fig. 12) to be connected to the worm shaft 30, and the outer race 81 is fixed and interference-fitted to the housing 10. Due to the eccentric design of the motor shaft 60 and the worm shaft 30, the second bearing 50 at the other end of the worm shaft 30 tends to move away from the center of the worm wheel 20, and due to the acting force and the reacting force, the inner ring 82 applies a force to the center of the worm wheel 20 due to the elastic force. I.e., both ends of the worm shaft 30 are forced toward the center of the worm wheel 20, thereby achieving the object of the present invention. A gap exists between the outer ring 81 and the inner ring 82, when a bumpy road surface occurs, the inner ring 82 swings around a fulcrum, the gap value between the outer ring 81 and the inner ring 82 cannot be too large, otherwise ratele noise can be caused, and multiple road tests prove that when the gap value between the outer ring 81 and the inner ring 82 is smaller than a certain value, ratele noise does not exist before and after endurance. It should be noted that, the value of the gap between the outer ring 81 and the inner ring 82 is greater than 0, and the specific value of the gap between the outer ring 81 and the inner ring 82 can be adjusted and set according to the specification model of the electric steering column worm gear mechanism 100, which is not limited in this respect.
In some embodiments of the present invention, referring to fig. 11, the inner circumferential wall of the outer ring 81 is provided with a first boss 811, the first boss 811 abuts against the inner ring 82, and the mounting pin 83 passes through the first boss 811 to be connected to the inner ring 82. This reduces the contact area between the outer ring 81 and the inner ring 82, and ensures the deformability of the inner ring 82 with respect to the outer ring 81.
In some embodiments of the present invention, referring to fig. 11, the outer circumferential wall of the inner ring 82 is provided with a second boss 812, the second boss 812 abuts against the inner circumferential wall of the outer ring 81, and the mounting pin 83 passes through the outer ring 81 and is connected to the second boss 812. This reduces the contact area between the outer ring 81 and the inner ring 82, and ensures the deformability of the inner ring 82 with respect to the outer ring 81. For example, in some specific examples, the inner circumferential wall of the outer ring 81 is provided with a first boss 811, the outer circumferential wall of the inner ring 82 is provided with a second boss 812, and the mounting pin 83 passes through the first boss 811 and is connected to the second boss 812.
In some embodiments of the present invention, and as shown in FIG. 11, mounting pin 83 is a plastic piece. It can be understood that the plastic part has good mechanical properties, the inner ring 82 can have certain deformability relative to the outer ring 81 on the premise of satisfying the structural firmness of the inner ring 82 and the outer ring 81, and the mounting pin 83 made of plastic has good corrosion resistance and higher reliability in use. Optionally, in some examples, the central axis of the mounting pin 83 is disposed parallel to the central axis of the turbine 20, thereby facilitating increased deformability of the inner race 82 relative to the outer race 81.
A steering system according to an embodiment of a second aspect of the present invention includes: an electric steering column worm gear mechanism 100 according to an embodiment of the first aspect of the present invention.
According to the steering system of the second aspect of the present invention, by providing the electric steering column worm gear mechanism 100 of the first aspect of the present invention, the gap between the worm gear 20 and the worm shaft 30 can be reduced, so that the new vehicle and the durable steering system can perform well in the estimation of the ratele noise on the bumpy road, and no significant performance attenuation occurs after the durability, which is beneficial to improving the overall performance of the steering system.
According to a vehicle of an embodiment of a third aspect of the invention, comprising: an electric power steering system according to an embodiment of the second aspect of the invention.
According to the vehicle of the embodiment of the third aspect of the invention, by providing the electric power steering system of the embodiment of the second aspect, the overall performance of the vehicle is improved.
Other configurations and operations of vehicles according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
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 device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
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; the connection can be mechanical connection, electrical connection or communication; 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.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An electric steering column worm gear mechanism, characterized by, includes:
a housing;
the worm wheel and the worm are arranged in the shell and are meshed and connected, and two ends of the worm are connected with the shell through a first bearing and a second bearing respectively;
the motor shaft is rotatably arranged in the shell, a coupling assembly is arranged at the output end of the motor shaft, the coupling assembly is connected with one end of the worm, which penetrates through the first bearing, and the motor shaft and the worm are eccentrically arranged and are adjacent to the turbine;
a resilient member coupled to the housing, the second bearing being mounted to the resilient member, the resilient member being configured and adapted to provide a force to the second bearing toward the turbine.
2. The electric steering column worm gear mechanism of claim 1, wherein the coupling assembly comprises: the motor shaft comprises a first hub, a second hub and a coupler, wherein the first hub is arranged at the output end of the motor shaft, the second hub is arranged at one end of the worm, and the first hub is connected with the second hub through the coupler.
3. The electric steering column worm gear mechanism according to claim 2, wherein the second hub is provided with a fixing hole through which a threaded fastener is connected to the worm.
4. The electric steering column worm gear mechanism according to claim 2, wherein a plurality of first engaging protrusions are provided on the outer peripheral wall of the first hub, a plurality of second engaging protrusions are provided on the outer peripheral wall of the second hub, a plurality of engaging grooves adapted to be engaged with the plurality of first engaging protrusions and the plurality of second engaging protrusions in a one-to-one correspondence are provided on the inner peripheral wall of the coupling, and the first engaging protrusions and the second engaging protrusions are arranged at intervals in the axial direction of the coupling.
5. The electric steering column worm gear mechanism according to any one of claims 1 to 4, characterized in that the elastic member includes:
an outer race connected to the housing;
an inner ring positioned within the outer ring, a gap being present between the inner ring and the outer ring;
and the mounting pin penetrates through the outer ring and is connected with the inner ring.
6. The electric steering column worm gear mechanism according to claim 5, wherein the inner peripheral wall of the outer ring is provided with a first boss abutting against the inner ring, and the mounting pin is connected to the inner ring through the first boss.
7. The electric steering column worm gear mechanism according to claim 5, wherein the outer peripheral wall of the inner ring is provided with a second boss portion that abuts against the inner peripheral wall of the outer ring, and the mounting pin passes through the outer ring and is connected to the second boss portion.
8. The electric steering column worm gear mechanism of claim 5, wherein the mounting pin is a plastic piece.
9. An electric power steering system characterized by comprising: the electric steering column worm gear mechanism of any of claims 1-8.
10. A vehicle, characterized by comprising: the electric power steering system according to claim 9.
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| CN202110277142.2A CN112810691B (en) | 2021-03-15 | 2021-03-15 | Electric steering column worm gear mechanism, electric steering system and vehicle |
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| CN202110277142.2A CN112810691B (en) | 2021-03-15 | 2021-03-15 | Electric steering column worm gear mechanism, electric steering system and vehicle |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0575633A1 (en) * | 1992-05-20 | 1993-12-29 | Siemens Aktiengesellschaft | Actuating mechanism with a geared motor with positive and automatic interlocking of position |
| CN2597296Y (en) * | 2002-12-20 | 2004-01-07 | 上汽集团奇瑞汽车有限公司 | Front wheel knuckle for car |
| CN201016362Y (en) * | 2007-02-13 | 2008-02-06 | 杨燕敏 | Eccentric bearing of automobile diverter |
| US20110147113A1 (en) * | 2009-12-23 | 2011-06-23 | Mando Corporation | Reducer of electric power steering apparatus |
| JP2013063741A (en) * | 2011-09-20 | 2013-04-11 | Honda Motor Co Ltd | Electric power steering device |
| CN104691610A (en) * | 2015-02-16 | 2015-06-10 | 宁波拓普智能刹车系统有限公司 | Electric power steering scuffing-resistant worm device |
| CN207015414U (en) * | 2017-06-08 | 2018-02-16 | 奇瑞汽车股份有限公司 | The power assisting device of steering |
| CN108045429A (en) * | 2017-12-08 | 2018-05-18 | 芜湖世特瑞转向系统有限公司 | The retarder of electric boosting steering system |
| KR20180118383A (en) * | 2017-04-21 | 2018-10-31 | 주식회사 만도 | Reducer of Electric Power Steering Apparatus |
| CN209505429U (en) * | 2018-12-14 | 2019-10-18 | 深圳市大富科技股份有限公司 | A kind of hub motor, automotive wheel and automobile |
| CN110654446A (en) * | 2018-06-29 | 2020-01-07 | 北汽福田汽车股份有限公司 | Speed reduction mechanism, electric power steering column, electric power steering and vehicle |
-
2021
- 2021-03-15 CN CN202110277142.2A patent/CN112810691B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0575633A1 (en) * | 1992-05-20 | 1993-12-29 | Siemens Aktiengesellschaft | Actuating mechanism with a geared motor with positive and automatic interlocking of position |
| CN2597296Y (en) * | 2002-12-20 | 2004-01-07 | 上汽集团奇瑞汽车有限公司 | Front wheel knuckle for car |
| CN201016362Y (en) * | 2007-02-13 | 2008-02-06 | 杨燕敏 | Eccentric bearing of automobile diverter |
| US20110147113A1 (en) * | 2009-12-23 | 2011-06-23 | Mando Corporation | Reducer of electric power steering apparatus |
| JP2013063741A (en) * | 2011-09-20 | 2013-04-11 | Honda Motor Co Ltd | Electric power steering device |
| CN104691610A (en) * | 2015-02-16 | 2015-06-10 | 宁波拓普智能刹车系统有限公司 | Electric power steering scuffing-resistant worm device |
| KR20180118383A (en) * | 2017-04-21 | 2018-10-31 | 주식회사 만도 | Reducer of Electric Power Steering Apparatus |
| CN207015414U (en) * | 2017-06-08 | 2018-02-16 | 奇瑞汽车股份有限公司 | The power assisting device of steering |
| CN108045429A (en) * | 2017-12-08 | 2018-05-18 | 芜湖世特瑞转向系统有限公司 | The retarder of electric boosting steering system |
| CN110654446A (en) * | 2018-06-29 | 2020-01-07 | 北汽福田汽车股份有限公司 | Speed reduction mechanism, electric power steering column, electric power steering and vehicle |
| CN209505429U (en) * | 2018-12-14 | 2019-10-18 | 深圳市大富科技股份有限公司 | A kind of hub motor, automotive wheel and automobile |
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| CN112810691B (en) | 2022-11-29 |
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