CN218771621U

CN218771621U - Automobile steering device driven by hole-type servo motor

Info

Publication number: CN218771621U
Application number: CN202223197740.8U
Authority: CN
Inventors: 强鸿枭; 张东升; 史生宇; 强静远
Original assignee: Foshan Jingying Intelligent Equipment Co ltd
Current assignee: Foshan Jingying Intelligent Equipment Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-03-28
Anticipated expiration: 2032-11-29

Abstract

The utility model relates to an automobile parts technical field, the utility model discloses a by pass servo motor driven auto steering ware device, include: a hole type motor and a steering pull rod. The hole type motor comprises a motor shaft, and the motor shaft and the steering pull rod are coaxially arranged. The motor shaft has a socket hole extending in the axial direction. The steering pull rod penetrates through the sleeving hole and is in threaded transmission connection with the motor shaft. The automobile steering device driven by the hole-shaped servo motor directly drives the steering pull rod to move through the hole-shaped servo motor, the structure is compact, and the layout difficulty is low when the automobile steering device is applied; the motor shaft is directly connected with the steering pull rod in a transmission way, so that the power transmission frequency is low and the precision is high; the motor and the steering pull rod do not need additional transmission components, and the overall structure cost and the later maintenance cost are lower.

Description

Automobile steering device driven by hole-type servo motor

Technical Field

The utility model relates to an automobile parts technical field, in particular to by pass servo motor driven auto steering ware device.

Background

With the rapid development of economy, automobiles have become indispensable vehicles in people's lives. The steering gear of the automobile is an important component of the automobile, and the main functions of the steering gear are to change the driving direction of the automobile and keep the automobile in stable straight driving. The steering gear mainly changes the rotation of a steering wheel into the linear motion of a rack shaft, thereby driving the swing of a steering rocker arm and enabling wheels to rotate in the same direction of the rotation of the steering wheel.

If the resistance is too large when the wheels are turned, a driver is very hard to turn through the steering wheel, and therefore many automobile steering devices are provided with external power as assistance. Among these power steering systems, electric power steering systems are most widely used, particularly in the field of automatic driving. In the electric power steering in the prior art, the motor is externally arranged on the steering driving mechanism, the motor and the steering mechanism need additional transmission components for connection, the structure is complex, and the optimization is needed in the directions of cost, precision and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a by pass servo motor driven auto steering ware device to solve one or more technical problem that exist among the prior art, provide a profitable selection or create the condition at least.

The technical scheme adopted for solving the technical problems is as follows:

an automobile steering device driven by a hole type servo motor, comprising: a hole-type motor and a steering rod;

the pass motor includes the motor shaft, the motor shaft with the coaxial setting of steering linkage, the motor shaft has along the axially extended hole that cup joints, steering linkage wear to locate cup joint the hole and with motor shaft screw thread transmission is connected.

The utility model provides a by pass servo motor driven auto steering ware device has following beneficial effect at least: the hole type motor can rotate through a driving motor shaft, and the steering pull rod moves along the axial direction through thread transmission, so that the steering of the wheels is controlled. The automobile steering device driven by the hole-shaped servo motor directly drives the steering pull rod to move through the hole-shaped servo motor, the structure is compact, and the layout difficulty is low when the automobile steering device is applied; the motor shaft is directly connected with the steering pull rod in a transmission way, so that the power transmission frequency is low and the precision is high; the motor and the steering pull rod do not need additional transmission components, and the overall structure cost and the later maintenance cost are lower.

As a further improvement of the above technical solution, the hole-type motor further comprises a motor casing, a bearing set, a stator and a rotor; the motor shaft penetrates through the motor shell, the bearing group is respectively and coaxially connected with the motor shaft and the motor shell, the stator and the rotor are arranged between the motor shaft and the motor shell, the stator is connected with the motor shell, and the rotor is connected with the motor shaft. According to the technical scheme, the motor shaft and the motor shell are rotatably connected through the bearing set, the stator and the rotor are respectively connected with the motor shell and the motor shaft, and the rotor rotates under the electromagnetic action of the stator, so that the motor shaft is driven to rotate relative to the motor shell.

As a further improvement of the above technical solution, the bearing set includes a plurality of tapered roller bearings. Through the technical scheme, the tapered roller bearing can resist axial thrust, so that the motor shaft can be fixed in the motor shell to avoid axial movement.

As a further improvement of the technical scheme, the motor shaft is provided with a limiting shaft shoulder, and the tapered roller bearings are arranged in pairs at two axial ends of the limiting shaft shoulder. Through the technical scheme, the motor shaft can be axially connected with the tapered roller bearing through the limiting shaft shoulder.

As a further improvement of the above technical solution, the motor casing has a bearing cavity and a winding cavity axially arranged therein, the bearing assembly is disposed in the bearing cavity, and the stator and the rotor are disposed in the winding cavity. Through above-mentioned technical scheme, bearing chamber and winding chamber provide installation space for bearing group and stator and rotor respectively, and bearing chamber and winding chamber set up along the axial for the radial dimension of pass motor can keep less value, provides the space for the screw drive of motor shaft and steering linkage simultaneously.

As a further improvement of the above technical solution, the automobile steering device further includes a steering transmission shaft, and the steering transmission shaft is in transmission connection with the motor shaft. Through above-mentioned technical scheme, can also drive the motor shaft through turning to the transmission shaft and rotate when the outage, realize that mechanical transmission turns to.

As a further improvement of the technical scheme, the axial direction of the steering transmission shaft is perpendicular to the motor shaft, and a transmission component is arranged between the steering transmission shaft and the motor shaft. Through above-mentioned technical scheme, the motor shaft sets up with the steering linkage is coaxial, steering drive shaft perpendicular to motor shaft, and the rotation of steering drive shaft can more conveniently be controlled to the navigating mate.

As a further improvement of the above technical solution, the transmission member includes a worm wheel and a worm, the worm is coaxially and fixedly connected with the steering transmission shaft, and the worm wheel is coaxially and fixedly connected with the motor shaft. Through the technical scheme, when the motion and the power between the two staggered shafts are transmitted through the worm gear and the worm, a large transmission ratio can be obtained, and compared with a bevel gear transmission structure, the bevel gear transmission structure is more compact, the bearing capacity is higher, and the bevel gear transmission structure has a self-locking characteristic.

As a further improvement of the above technical solution, the transmission member includes two bevel gears, and the two bevel gears are respectively and fixedly connected with the steering transmission shaft and the motor shaft in a coaxial manner. Through the technical scheme, the meshed bevel gears can also be used for transmitting the motion and the power between the two crossed shafts, and the bevel gear transmission mechanism has the advantages of convenience in manufacturing, wide application and low maintenance cost.

As a further improvement of the above technical solution, the steering transmission shaft may be close to or far from the motor shaft to engage or disengage the transmission members. Through the technical scheme, the steering transmission shaft and the motor shaft can be selectively separated, and when the motor of the hole type servo motor can work normally, the bevel gears and the worm which are meshed with each other do not participate in transmission. Only when the motor cannot work normally, the steering wheel drives the motor shaft to pull the steering pull rod through the bevel gears or the worm so as to change the direction of the wheels.

Drawings

The present invention will be further explained with reference to the drawings and examples;

fig. 1 is a schematic perspective view of an embodiment of an automobile steering gear device driven by a hole-type servo motor according to the present invention;

fig. 2 is a side view of an embodiment of the present invention, which is a steering gear device driven by a servo motor with holes;

fig. 3 is a side sectional view of an embodiment of the present invention, showing an automotive steering gear driven by a servo motor with a hole pattern;

fig. 4 is a schematic perspective exploded view of an embodiment of a hole-type servo motor driven steering gear device according to the present invention;

fig. 5 is a schematic perspective view of an embodiment of an automobile steering gear device driven by a hole-type servo motor according to the present invention;

fig. 6 is a side view of an embodiment of the present invention, which is an automobile steering device driven by a hole-type servo motor.

In the figure: 100. a hole-shaped motor; 110. a motor housing; 111. a bearing cavity; 112. a winding cavity; 113. an annular boss; 114. a front flange; 115. a rear flange; 116. an encoder; 120. a motor shaft; 121. a limiting shaft shoulder; 122. sleeving a hole; 130. a bearing set; 131. a spacer sleeve; 132. a tapered roller bearing; 140. a stator; 150. a rotor; 200. a steering tie rod; 210. a spherical hinge; 300. a steering transmission shaft; 310. a worm gear; 320. a worm; 330. a bevel gear.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if words such as "a plurality" are used, the meaning is one or more, the meaning of a plurality of words is two or more, and the meaning of more than, less than, more than, etc. is understood as not including the number, and the meaning of more than, less than, more than, etc. is understood as including the number.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 6, the present invention provides an automobile steering device driven by a hole type servo motor, which comprises the following embodiments:

an automobile steering device driven by a hole type servo motor, comprising: a hole-type motor 100, a steering rod 200, and a steering drive shaft 300.

The axial direction of the tie rod 200 is set to the front-rear direction. The hole type motor 100 is disposed in the front-rear direction. The hole type motor 100 includes: motor housing 110, motor shaft 120, bearing set 130, stator 140, and rotor 150. The motor shaft 120 is disposed through the motor casing 110, and the bearing assembly 130, the stator 140 and the rotor 150 are disposed between the motor shaft 120 and the motor casing 110. The bearing assembly 130 is used to rotatably connect the motor shaft 120 to the motor housing 110. The stator 140 and the rotor 150 are used for driving the motor shaft 120 to rotate relative to the motor housing 110.

In this embodiment, the motor case 110 has a cylindrical shape. The motor case 110 has a hollow inner cavity. The inner cavities include a bearing cavity 111 and a winding cavity 112. The bearing cavity 111 and the winding cavity 112 are both cylindrical, and the bearing cavity 111 and the winding cavity 112 are both cylindrical. The middle part of the inner cavity is provided with an annular boss 113 protruding inwards, and the bearing cavity 111 and the winding cavity 112 are respectively arranged on the front side and the rear side of the annular boss 113.

The front and rear ends of the motor case 110 are respectively provided with a front flange 114 and a rear flange 115. The front flange 114 is fixedly mounted at the front end of the motor casing 110, and the front flange 114 and the annular boss 113 are respectively disposed at the front side and the rear side of the bearing cavity 111. The rear flange 115 is fixedly mounted at the rear end of the motor casing 110, and the annular boss 113 and the rear flange 115 are respectively disposed at the front side and the rear side of the winding cavity 112.

The motor shaft 120 is rotatably inserted into the inner cavity of the motor housing 110. The axial direction of the motor shaft 120 extends in the front-rear direction. The motor shaft 120 has a receiving hole 122 penetrating forward and backward. The sleeve hole 122 is coaxially sleeved on the steering linkage 200. The sleeve hole 122 is in threaded transmission connection with the steering pull rod 200.

The inner side of the sleeve hole 122 is provided with internal threads, and the outer side of the steering pull rod 200 is provided with corresponding and meshed external threads. When the motor shaft 120 rotates relative to the steering linkage 200, the steering linkage 200 can move back and forth relative to the motor shaft 120 through screw transmission.

The bearing set 130 is disposed in the bearing cavity 111. The bearing set 130 includes two tapered roller bearings 132 and a spacer 131.

And a convex limiting shaft shoulder 121 is arranged on the outer side of the motor shaft 120. The two tapered roller bearings 132 are respectively arranged at the front end and the rear end of the limiting shaft shoulder 121 in pairs. The spacer bush 131 is cylindrical, and the spacer bush 131 is coaxially sleeved outside the limiting shaft shoulder 121. The spacer 131 and the limiting shaft shoulder 121 have the same axial dimension.

In practical use, the tapered roller bearings 132 arranged in pairs at the front and the rear are respectively arranged at the front and the rear ends of the bearing cavity 111, and the outer rings of the two tapered roller bearings 132 respectively abut against between the front flange 114 and the annular boss 113. The spacer 131 is disposed between the two tapered roller bearings 132, and the front end and the rear end of the spacer 131 respectively abut against the outer rings of the two tapered roller bearings 132. The inner rings of the two tapered roller bearings 132 respectively abut against the front end and the rear end of the limiting shaft shoulder 121.

The stator 140 and the rotor 150 are both disposed within the winding cavity 112. The stator 140 is coupled to the motor housing 110, and the rotor 150 is coupled to the motor shaft 120. The stator 140 is sleeved outside the rotor 150 and is fixedly disposed on the inner wall of the winding cavity 112. The front end of the stator 140 abuts against the rear side of the annular boss 113, and the rear flange 115 can abut against the rear end of the stator 140. The rotor 150 is coaxially sleeved on the motor shaft 120 and rotates synchronously with the motor shaft 120. In actual use, the rotor 150 is rotated by the electromagnetic action of the stator 140, so as to drive the motor shaft 120 to rotate around its rotation axis relative to the motor casing 110.

An encoder 116 is further disposed at the rear end of the motor housing 110. The encoder 116 includes a magnetic loop and a read head. The magnetic ring is connected with the rear end of the motor shaft 120, and the plug is mounted on the rear flange 115. Precise control of the bore motor 100 is achieved by encoder 116.

The front and rear ends of the steering linkage 200 are provided with spherical joints 210 connected with wheel mechanisms. The hole type motor 100 can drive the steering pull rod 200 to move back and forth through the threads of the motor shaft 120, thereby controlling the deflection steering of the wheels. In order to ensure that the wheels can still be flexibly steered by the steering wheel when the power is off, the upper end of the steering transmission shaft 300 is connected with the steering wheel. The steering transmission shaft 300 has an axial direction perpendicular to the motor shaft 120. A transmission member is arranged between the steering transmission shaft 300 and the motor shaft 120, and the steering transmission shaft 300 is in transmission connection with the motor shaft 120 through the transmission member.

Referring to fig. 1 and 2, in some embodiments, the transmission member may include a worm wheel 310 and a worm 320. The worm 320 is coaxially and fixedly connected with the end of the steering transmission shaft 300. The worm wheel 310 is coaxially and fixedly connected with the motor shaft 120. In other embodiments, as shown in fig. 5 and 6, the drive member may employ two bevel gears 330. The two bevel gears 330 are respectively coaxially and fixedly connected with the steering transmission shaft 300 and the motor shaft 120.

The steering transmission shaft 300 is movable relative to the motor shaft 120 to disengage or engage the transmission members. When the hole-type motor 100 can work normally, the engaged bevel gears 330 and the worm 320 do not participate in transmission. Only when the motor cannot work normally, the steering wheel drives the motor shaft 120 to pull the steering rod 200 to move directly through the bevel gear 330 or the worm 320 of the transmission member, so that the wheels are changed in direction. The motor on the mechanism can not only receive the instruction sent by the steering wheel to work, but also receive the signals of other sensors to implement automatic driving in the unmanned driving state.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 present invention. In this specification, the schematic representations of the terms used above do not necessarily 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.

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

Claims

1. The utility model provides an automobile steering ware device by pass aperture servo motor drive which characterized in that: the method comprises the following steps: a hole-type motor and a steering rod;

the hole type motor comprises a motor shaft, the motor shaft and the steering pull rod are coaxially arranged, the motor shaft is provided with a sleeve hole extending along the axial direction, and the steering pull rod penetrates through the sleeve hole and is in threaded transmission connection with the motor shaft.

2. The hole-type servo motor-driven automobile steering device according to claim 1, wherein: the hole-type motor also comprises a motor shell, a bearing group, a stator and a rotor; the motor shaft penetrates through the motor shell, the bearing group is respectively and coaxially connected with the motor shaft and the motor shell, the stator and the rotor are arranged between the motor shaft and the motor shell, the stator is connected with the motor shell, and the rotor is connected with the motor shaft.

3. The hole-type servo motor driven steering gear device for automobile according to claim 2, wherein: the bearing set includes a plurality of tapered roller bearings.

4. The hole-type servo motor-driven automobile steering device according to claim 3, wherein: the motor shaft is provided with a limiting shaft shoulder, and the tapered roller bearings are arranged in pairs at two axial ends of the limiting shaft shoulder.

5. The hole-type servo motor driven steering gear device for automobile according to claim 2, wherein: the motor casing is internally provided with a bearing cavity and a winding cavity which are arranged along the axial direction, the bearing group is arranged in the bearing cavity, and the stator and the rotor are arranged in the winding cavity.

6. The hole-type servo motor-driven automobile steering device according to claim 1, wherein: the automobile steering device further comprises a steering transmission shaft, and the steering transmission shaft is in transmission connection with the motor shaft.

7. The hole-type servo motor-driven automobile steering device according to claim 6, wherein: the axial direction of the steering transmission shaft is perpendicular to the motor shaft, and a transmission component is arranged between the steering transmission shaft and the motor shaft.

8. The hole-type servo motor-driven automobile steering device according to claim 7, wherein: the transmission component comprises a worm wheel and a worm, the worm is coaxially and fixedly connected with the steering transmission shaft, and the worm wheel is coaxially and fixedly connected with the motor shaft.

9. The hole-type servo motor-driven automobile steering device according to claim 7, wherein: the transmission component comprises two bevel gears, and the two bevel gears are respectively coaxially and fixedly connected with the steering transmission shaft and the motor shaft.

10. The hole-type servo motor-driven automobile steering device according to any one of claims 8 or 9, wherein: the steering transmission shaft can be close to or far away from the motor shaft, so that the transmission components are engaged or disengaged.