CN113346307A

CN113346307A - Sliding wire connector, steering driving system, steering system and vehicle

Info

Publication number: CN113346307A
Application number: CN202110705927.5A
Authority: CN
Inventors: 李家斌; 徐进彬; 李孟
Original assignee: Beijing Ruiyada Technology Co ltd; Zibo Vocational Institute
Current assignee: Beijing Ruiyada Technology Co ltd; Zibo Vocational Institute
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-09-03

Abstract

The invention discloses a sliding wire connector, a steering driving system, a steering system and a vehicle. A first conductor in the sliding wire connector is electrically connected with a first electrical interface on the fixed piece, and a second conductor is electrically connected with a second electrical interface on the rotating piece and can be driven by the rotating piece to rotate; the number of the first electric conductors and the number of the second electric conductors are N; n is a positive integer not less than 3; in a working state, the first electric conductors and the fixing piece are relatively static, and the first electric conductors and the second electric conductors are in one-to-one correspondence and are always in contact with each other so as to realize electric energy and/or signal transmission; the projections of the N first electric conductors or the N second electric conductors on the axial cross section are not collinear; the axial cross section is the end face of the rotating member cut by a plane perpendicular to its axis. The invention can avoid the problems of cable winding, cable breaking and the like between the fixed piece and the rotating piece of the steering structure in the rotating process, and can improve the transmission quality of electric energy and/or signals.

Description

Sliding wire connector, steering driving system, steering system and vehicle

Technical Field

The invention relates to the field of connectors, in particular to a sliding wire connector, a steering driving system, a steering system and a vehicle.

Background

Many devices are equipped with a steering drive system, for example, an electric vehicle is equipped with a wheel hub motor steering drive system, which further includes a steering structure including a fixed member and a rotating member.

In some applications, electrical power and/or signals may be transmitted between the fixed member and the rotatable member. For example, the hub motor steering driving system needs to provide electric energy for the hub motor, and a flexible cable is adopted between the fixed part and the rotating part of the steering structure to transmit the electric energy, namely the fixed part and the rotating part are directly connected through the cable. During the rotation process, the direct connection may cause the cable between the fixed member and the rotating member to be wound and torn off.

Disclosure of Invention

Based on this, the embodiment of the invention provides a sliding wire connector, a steering driving system, a steering system and a vehicle, so as to avoid the problems of cable winding, cable breaking and the like between a fixed part and a rotating part of a steering structure in the rotating process.

In order to achieve the purpose, the invention provides the following scheme:

a sliding wire connector is applied to a steering driving system, the steering driving system comprises a steering mechanism, the steering mechanism comprises a fixed piece and a rotating piece, a first electrical interface is arranged on the fixed piece, and a second electrical interface is arranged on the rotating piece;

the connector for a slide wire includes:

a first conductor and a second conductor;

the number of the first electric conductors and the number of the second electric conductors are N; n is a positive integer not less than 3;

the first electrical conductor is used for electrically connecting with the first electrical interface;

the second electric conductor is used for being electrically connected with the second electric interface and can be driven by the rotating piece to rotate;

in a working state, the first electric conductors and the fixing piece are relatively static, and the first electric conductors and the second electric conductors are in one-to-one correspondence and are always in contact with each other so as to realize electric energy and/or signal transmission;

the projections of the N first electric conductors or the N second electric conductors on the axial cross section are not collinear; the axial cross section is an end face formed by cutting the rotating piece by a plane perpendicular to the axis of the rotating piece.

Optionally, one of the first conductor and the second conductor is a brush, and the other conductor is a sheet conductor.

Optionally, the shape of the brush is a sector; the sheet-shaped electric conductor is a slip ring.

Optionally, the sliding wire connector further comprises a preload piece; the preload piece is used for providing preload for the first electric conductor and/or the second electric conductor.

Optionally, the value of N is 3;

the connection line of the projection of any first conductor and the center of the axial cross section is a first projection line;

an included angle between any two first projection lines is 120 degrees;

or the connection line of the projection of any one second conductor and the center of the axial cross section is a second projection line;

the included angle between any two second projection lines is 120 degrees.

Optionally, the sliding wire connector further comprises a first insulating housing and a second insulating housing; the rotor further comprises a steering suspension;

n first electric conductors are distributed on the first insulating shell; in an operating state, the first insulating shell is fixedly connected with the fixing piece, and the first electrical interface is positioned in the first insulating shell;

the N second electric conductors are distributed on the second insulating shell; in an operating state, the second insulating shell is sleeved on the steering suspension, and the second electrical interface is located in the second insulating shell.

Optionally, the sliding-wire connector further includes a tapered roller bearing;

the tapered roller bearing is disposed between an outer circumferential surface of the steering suspension and a gap of the first insulating housing.

Optionally, the first insulating housing and the second insulating housing have an axial gap in the axial direction; the first and second insulating housings have a radial gap in a radial direction.

Optionally, a seal ring is arranged in the radial gap.

The present invention also provides a steering drive system including: the sliding wire connector, the steering mechanism, the motor controller and the hub motor are arranged on the frame;

the steering mechanism comprises a fixed piece and a rotating piece, wherein a first electrical interface is arranged on the fixed piece, and a second electrical interface is arranged on the rotating piece;

the first end of the first electrical interface is electrically connected with the motor controller, the second end of the first electrical interface is electrically connected with the first electric conductor, and the first end of the second electrical interface is electrically connected with the second electric conductor; the second end of the second electrical interface is electrically connected with the hub motor.

The present invention also provides a steering system comprising: the steering drive system and the actuator described above;

and a hub motor in the steering driving system is electrically connected with the actuator.

The present invention also provides a vehicle comprising: such as the steering system described above.

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

the embodiment of the invention provides a sliding wire connector, a steering driving system, a steering system and a vehicle. In this way, even during rotation, the first and second conductors in contact may transmit electrical energy and/or signals, thereby enabling transmission of electrical energy and/or signals between the fixed member (first electrical interface) and the rotatable member (second electrical interface). Meanwhile, no cable is arranged between the first conductor and the second conductor, so that the problems of winding, breaking and the like of the cable between the fixed part and the rotating part in the process of transmitting electric energy and/or signals are avoided.

In addition, the projections of the N first electric conductors or the N second electric conductors on the axial cross section are not collinear, so that the distance between the N electric conductors can be increased, the electromagnetic interference among the N electric conductors is avoided, and the transmission quality of electric energy and/or signals is improved.

Drawings

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

FIG. 1 is an axial cross-sectional view of a slick line connector provided in accordance with an embodiment of the present invention;

FIG. 2 is a top view of a slide wire connector provided in accordance with an embodiment of the present invention;

fig. 3 is a perspective view of a slide wire connector according to an embodiment of the present invention.

Description of the symbols: 1-fixed part, 2-rotating part, 3-first electrical interface, 4-second electrical interface, 5-first electrical conductor, 6-second electrical conductor, 7-spring, 8-first insulating shell, 9-second insulating shell, 10-first bolt, 11-second bolt, 12-sealing ring, 13-tapered roller bearing.

Detailed Description

In the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same or similar items having substantially the same function and action. For example, the first and second electrical conductors are only for distinguishing different electrical conductors, and the order of the first and second electrical conductors is not limited. Those skilled in the art will appreciate that the words "first," "second," and the like do not limit the number or order of execution.

It is noted that, in the present application, words such as "exemplary" or "for example" are used to mean exemplary, illustrative, or descriptive. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the embodiment of the present invention, "and/or" is used to describe an association relationship of an associated object, and indicates that three relationships may exist, for example, a and/or B may indicate: a is present alone, both A and B are present, and B is present alone. Wherein A and B may be single or multiple. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The invention aims to provide a sliding wire connector, a steering driving system, a steering system and a vehicle, which are used for avoiding the problems of cable winding, cable breaking and the like between a fixed part and a rotating part of a steering structure in the rotating process.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The sliding wire connector can be applied to a steering driving system, and the steering driving system further comprises a steering structure, and the steering structure comprises a fixed part and a rotating part. The sliding wire connector can transmit electric energy and/or signals between the fixed part and the rotating part, and meanwhile, the problems of cable winding, cable breaking and the like between the fixed part and the rotating part can be avoided.

The steering system may then comprise: a steering drive system and an actuator.

The steering driving system and the steering system can be applied to the steering scene of the electric automobile, namely can be applied to the vehicle, and of course, can also be applied to other steering scenes.

The vehicle may exemplarily include: the steering system comprises a chassis, a vehicle body, an engine and electric equipment, wherein the vehicle body, the engine and the electric equipment are arranged on the chassis, and the steering system can be arranged on the chassis.

Taking the application to an electric vehicle scene as an example, the steering driving system may specifically be a wheel hub motor steering driving system, and besides the trolley connector and the steering mechanism, the wheel hub motor steering driving system may further include a motor controller and a wheel hub motor.

When the steering system is applied to an electric vehicle, the steering driving system in the steering system may be specifically an in-wheel motor steering driving system, and the actuator exemplarily includes a wheel of the vehicle, and the wheel is electrically connected to the in-wheel motor.

It should be noted that, most of the current hub motors are three-phase (U, V, W three-phase) motors, and in the steering structure of a hub motor driving system (steering system), flexible cables are generally adopted between the fixed part and the rotating part to transmit three-phase electricity, and no other connecting structure is added in the middle. However, in a 360 ° steering system, the cable direct connection structure causes problems of cable winding and even cable breaking.

Besides the electric energy, signals (such as sensor signals) can be transmitted between the fixed part and the rotating part, and if flexible cables are used for transmitting the signals, the cables are wound and even pulled apart.

When the sliding wire connector provided by the embodiment of the invention is applied to the steering system, the problems of cable winding, cable breaking and the like can be avoided while electric energy and/or signal transmission is realized.

As will be described in more detail below.

Example 1

The present embodiment describes a trolley wire connector used in a steering drive system.

Referring to fig. 1, a steering driving system illustratively includes: the steering mechanism comprises a fixing piece 1 and a rotating piece 2, a first electrical interface 3 is arranged on the fixing piece 1, and a second electrical interface 4 is arranged on the rotating piece 2.

The patch cord connector illustratively includes: a first conductor 5 and a second conductor 6. Wherein:

the first electrical conductor 5 is used for electrically connecting with the first electrical interface 3;

in one example, the first electrical conductor 5 may be electrically connected to the first electrical interface 3 by a first electrical cable.

In another example, the first electrical conductor 5 may be electrically connected to the first cable by a first braided annealed copper wire.

Besides cables, braided soft copper wires, those skilled in the art may also use other mediums (e.g. micro-strips) to realize the electrical connection between the first electrical conductor 5 and the first electrical interface 3, and any medium that can realize the electrical connection between the first electrical conductor 5 and the first electrical interface 3 may be called a second wire.

The second electric conductor 6 is used for electrically connecting with the second electric interface 4 and can be driven by the rotating piece 2 to rotate.

In one example, the second electrical conductor 6 may be electrically connected to the second electrical interface 4 by a second electrical cable.

In another example, the second electrical conductor 6 may be electrically connected to the second cable by a first braided annealed copper wire.

Besides cables, braided soft copper wires, a person skilled in the art may also use other media (e.g. micro-strips) to realize the electrical connection between the second electrical conductor 6 and the second electrical interface 4, and any media capable of realizing the electrical connection between the two may be referred to as a second wire.

In the working state, the first electric conductors 5 and the fixing member 1 are relatively static, and the first electric conductors 5 and the second electric conductors 6 are in one-to-one correspondence and are always in contact with each other, so that electric energy and/or signal transmission is realized.

It should be noted that, because the first electrical conductor 5 is stationary relative to the fixed member 1, and the first electrical interface 3 is disposed on the fixed member 1, the first wire is not twisted in the working state.

As for the second electric conductor 6, it can rotate under the driving of the rotating member 2, therefore, the second electric conductor 6 is stationary relative to the rotating member 2. The second electrical interface 4 is arranged on the rotor 2, so that the second conductor does not become entangled in the operating state.

In addition, in the working state, the first electric conductor 5 and the second electric conductor 6 are always in contact, so that even in the rotating process, the first electric conductor 5 and the second electric conductor 6 which are in contact can transmit electric energy and/or signals, and the electric energy and/or signals can be transmitted between the fixed part 1 and the rotating part 2 (namely the first electric interface 3 and the second electric interface 4). Meanwhile, no cable is arranged between the first conductor 5 and the second conductor 6, so that the problems of winding, breaking and the like of the cable between the fixed part and the rotating part can be avoided.

Referring to fig. 2, the number of the first conductors 5 and the number of the second conductors 6 are N; n is a positive integer not less than 3.

Correspondingly, the first electrical interfaces 3 may respectively have N output terminals to be connected with the N first electrical conductors 5 in a one-to-one correspondence; similarly, the second electrical interfaces 4 may respectively have N input terminals to be connected with the N second electrical conductors 6 in a one-to-one correspondence.

The value of N can be selected by those skilled in the art according to actual needs, for example, when three-phase electricity transmission is realized, N can be 3. For example, in a scenario of implementing three-phase electric transmission, the first electric conductor 5 and the second electric conductor 6 are 3, and the first electric interface 3 and the second electric interface 4 respectively have 3 terminals, which respectively correspond to the UVW three phases.

If three-phase and signal transmission are simultaneously realized, the value of N can be more than 3, and the specific value can be determined according to the number of cables required by a signal protocol.

Example 2

The present embodiment focuses on the distribution of the first conductor 5 or the second conductor 6.

The distribution of the N first electrical conductors 5 or the N second electrical conductors 6 can be designed flexibly by a person skilled in the art. For example, the projections of the N first electrical conductors 5 or the N second electrical conductors 6 on the axial cross section may be arranged to be collinear.

Alternatively, it is also possible to arrange that the projections of the N first electrical conductors 5 or the N second electrical conductors 6 on the axial cross section are not collinear. Therefore, the distance between the N electric conductors can be increased, the electromagnetic interference between the N electric conductors is avoided, and the transmission quality of electric energy and/or signals is improved. The axial cross-section refers to the end face of the rotor 2 cut by a plane perpendicular to its axis.

Taking the value of N as 3 as an example, in order to realize high-quality transmission of three-phase electric energy, the following design can be further performed on the distribution of the first conductor 5 or the second conductor 6 to realize that the projections are not collinear:

still referring to fig. 2, a connection line between a projection of any first conductor 5 and a center of the axial cross section is a first projection line; the included angle between any two first projection lines is 120 degrees;

or, a connection line between the projection of any one of the second conductors 6 and the center of the axial cross section is a second projection line; the included angle between any two second projection lines is 120 degrees.

The design can ensure that the 3 first electric conductors or the 3 second electric conductors are uniformly distributed on the axial cross section, so that the electromagnetic interference among the 3 electric conductors is minimum, and the transmission quality of electric energy is optimal.

Example 3

In this embodiment, the first conductor 5 in all the above embodiments is embodied as a brush, and the second conductor 6 is a sheet-like conductor. In other embodiments of the present invention, the first conductor 5 in all the above embodiments may be a sheet-shaped conductor, and the second conductor 6 is a brush.

In one example, the brush may be embodied as a graphite brush, an electrochemical graphite brush, a metal graphite brush, or the like; the sheet-shaped conductor can be a slip sheet, a slip ring and the like;

those skilled in the art can flexibly design the shapes of the brush and the sliding blade/sliding ring, such as a circle, an ellipse, a square, a sector, and even an irregular shape, as long as the brush and the sliding blade/sliding ring can be always in contact with each other during the working process, and further description is omitted here.

If the first conductor 5 is an electric brush and the second conductor 6 is a sheet conductor, in the working state, the electric brush and the fixed part 1 are relatively static, and the sheet conductor can rotate along with the rotating part 2, and the electric brush and the fixed part are in one-to-one correspondence and are always in contact.

On the contrary, if the first conductor 5 is a sheet conductor and the second conductor 6 is an electric brush, in the working state, the sheet conductor and the fixed member 1 are relatively static, the electric brush can rotate along with the rotating member 2, and the electric brush and the rotating member are in one-to-one correspondence and are always in contact.

In one example, in order to make the contact area between the brush and the sheet-shaped conductor as large as possible so as to meet the requirement of large-current transmission, the brush may be in a fan shape, and the sheet-shaped conductor may be specifically a slip ring, which are matched to meet the requirement of large-current transmission, so that electric sparks are not easily generated between the brush and the sheet-shaped conductor, and the service life is long.

Example 4

Still referring to fig. 1, the difference from the previous embodiment is that the sliding wire connector of the present embodiment further includes a spring 7; the spring 7 is used to provide a pre-load force to the first conductor 5 and/or the second conductor 6.

In one example, one end of the spring 7 is in contact with the first conductor 5 or the second conductor 6, and the other end is in contact with a pressing member, so that the spring 7 is always in a pressing state, thereby providing a pre-tightening force for the first conductor 5 or the second conductor 6. Therefore, the first conductor 5 and the second conductor 6 can be always kept in close contact, and the rotating part 2 can have a larger contact area no matter in a rotating state or a static state, so that the stability of electric energy and/or signal transmission is ensured.

Besides the spring, a pre-tightening element such as a spring sheet or an elastic strip can be used to provide a pre-tightening force for the first conductor 5 and/or the second conductor 6.

In quantity, a pre-tightening pieces can be adopted to provide pre-tightening force for the first electric conductor 5 or the second electric conductor 6, and a is a positive integer not less than 1.

Specifically, still taking the spring as an example, when one of the first conductor 5 or the second conductor 6 is a brush, and the other is a slip ring, in an example, the spring 7 may include a brush spring, one end of the brush spring is in contact with the brush, and the other end of the brush spring is in contact with a pressing member, so that the brush spring is always in a pressed state;

in this application scenario, the total number of brush springs may be a × N, i.e., one brush contacts a brush springs. When a is 2 or more, a brush springs may be located at both sides of a cable connected to the brush.

In another example, the spring 7 may comprise a slip ring spring, one end of which is in contact with the slip ring and the other end of which is in contact with a pressing member, so that the slip ring spring is always in a pressed state.

In this application scenario, the total number of the slip ring springs may be a × N, that is, one slip ring is in contact with a slip ring springs. When a is greater than or equal to 2, a slip ring springs may be located on both sides of a cable connected to the slip ring.

In yet another example, the spring 7 may exemplarily include both the brush spring and the slip ring spring, the brush spring provides a pre-load force for the brush, and the slip ring spring provides a pre-load force for the slip ring.

In this application scenario, the total number of brush springs may be a × N; the number of slip ring springs may be a x N.

In addition, if the N first conductors 5 and the N second conductors 6 are regarded as N conductor groups (each conductor group includes a corresponding one of the first conductors and one of the second conductors), the following arrangement may be made:

any one or more pairs of the N electric conductor groups only adopt a slip ring spring to provide pretightening force, and the rest electric conductor groups only adopt an electric brush spring to provide pretightening force;

or in the N conductor groups, N1 conductor groups only adopt a slip ring spring to provide pre-tightening force, N2 conductor groups only adopt a conductor group only adopt a brush spring to provide pre-tightening force, and N3 conductor groups simultaneously adopt the brush spring and the slip ring spring to provide pre-tightening force. N1, N2, N3 are all less than N, and the sum of N1, N2, N3 is not more than N.

Example 5

In contrast to all the embodiments described above, the slide wire connector of the present embodiment further comprises a first insulating housing 8 and a second insulating housing 9, as shown in fig. 3. The turning piece 2 comprises a steering suspension in addition to the second electrical interface 4.

The N first electric conductors 5 are distributed on the first insulating shell 8; in an operating state, the first insulating housing 8 is fixedly connected with the fixing member 1, and the first electrical interface 3 and the first wire connected with the first electrical interface 3 are located in the first insulating housing 8.

The first insulating housing 8 can be fixedly connected to the fixing member 1 by various means, such as welding, riveting, screwing, etc., as long as it can be fixedly connected to the fixing member 1.

Furthermore, if the first electrical conductor 5 is prestressed by means of a prestressing element (for example a spring), the pressure element in contact with the prestressing element can be fixed to the first insulating housing 8.

The N first conductors 5 pass through the first insulating casing 8 (i.e. partially exposed outside the first insulating casing 8) or are located inside the first insulating casing 8, and are connected to the first wires. The preload element, which is in contact with the first electrical conductor 5, is also located in the first insulating housing 8.

The N second electric conductors 6 are distributed on the second insulating shell 9; under operating condition, second insulating housing 9 cover is established on turning to the suspension to turn to the suspension relatively fixed in the circumferencial direction, like this, can drive second insulating housing 9 and rotate when turning to the suspension rotation.

More specifically, the contact portion (may be referred to as a first contact portion) of the second insulating housing 9 with the steering suspension may have the following features: the first contact portion has a polygonal cross section, and a portion (which may be referred to as a second contact portion) with which the steering suspension is in contact has a polygonal cross section. Thus, when the second contact portion is nested in the first portion, the two can be fixed relatively in the circumferential direction, so that the steering suspension can drive the second insulating housing 9 to rotate.

The second electrical interface 4 and the second conducting wire connected to the second electrical interface 4 are both located in the second insulating housing 9, and if the second conductive body 6 provides a pre-tightening force through a second pre-tightening member (e.g., a spring), the pressing member contacting the pre-tightening member (e.g., a spring) can be fixed to the second insulating housing 9.

The N second conductors 6 pass through the second insulating housing 9 or are located in the second insulating housing 9, and the N second conductors 6 are connected with the second wire. The preload element in contact with the second conductor 6 is also located in the second insulating housing 9.

The first and second insulating cases 8 and 9 function to fix and protect the electrical interface, the electrical conductor, the spring, the first wire and the second wire.

The relationship between the first insulating housing 8 and the second insulating housing 9, and with other components, will be described below.

When the sliding wire connector is used for a hub steering driving system of an electric automobile, the fixing part 1 in the steering system is an automobile suspension or a part fixedly connected with the automobile suspension, and the steering suspension in the steering system is a 360-degree steering suspension. The first insulating shell 8 and the automobile suspension are connected with the automobile suspension through four or six first bolts 10 which are uniformly distributed, and the second insulating shell 9 is connected with the steering suspension through four or six second bolts 11 which are uniformly distributed.

In one example, the first and second insulating housings 8 and 9 have an axial gap in the axial direction; a person skilled in the art can flexibly design a specific value or value range of the axial gap as required, for example, 2mm to 4mm, or other ranges, which are not described herein;

the first insulating housing 8 and the second insulating housing 9 also have a radial gap in the radial direction, and a person skilled in the art can flexibly design a specific value of the radial gap as needed, for example, the specific value may be 2mm, or other values, which are not described herein.

The purpose of providing a gap between the first insulating housing 8 and the second insulating housing 9 is: when the first insulating shell 8 and the second insulating shell 9 rotate relatively, the contact between the two is avoided, so that the rotation is not influenced.

Further, a seal ring 12 may be provided in the radial gap, and the seal ring functions to prevent foreign matters from entering the radial gap between the first insulating housing 8 and the second insulating housing 9. The number of the sealing rings can be 2, or other numbers, as long as the foreign matters can be prevented from entering, and the description is omitted.

The sliding wire connector of this embodiment is at the working process, and first electric conductor and mounting are static relatively, and the second electric conductor can rotate under the drive of rotating the piece, and at the rotation in-process, first electric conductor and second electric conductor contact all the time and keep relative slip (can be simply referred to as sliding contact), can realize the electric connection between motor controller and the in-wheel motor through sliding contact's mode like this, do not influence 360 rotations that turn to the suspension simultaneously.

Example 6

The difference from all the above embodiments is that the plain wire connector of the present embodiment further includes a tapered roller bearing 13.

The tapered roller bearing 13 is disposed between the outer circumferential surface of the steering suspension and the gap of the first insulating housing 8.

The number of the tapered roller bearings 13 can be flexibly designed by those skilled in the art according to the needs, for example, the number of the tapered roller bearings 13 can be two, or other numbers, which are not described herein.

The tapered roller bearing 13 can balance the radial force in the rotation process of the steering suspension, so that the radial movement or radial deformation in the rotation process of the steering suspension is avoided, and the position is kept stable in the radial direction, namely the tapered roller bearing 13 has the radial positioning function. In addition, the steering suspension keeps stable position in the radial direction, and the slip ring and the brush always keep sliding contact in the radial direction.

To sum up, the tapered roller bearing 13 has two functions:

firstly, positioning;

and secondly, keeping the sliding contact between the slip ring and the brush.

Example 7

The present embodiment focuses on a steering drive system.

The steering drive system includes: the device comprises a sliding wire connector, a steering mechanism, a motor controller and a hub motor; the steering mechanism comprises a fixed piece and a rotating piece, wherein a first electrical interface is arranged on the fixed piece, and a second electrical interface is arranged on the rotating piece; the sliding wire connector comprises a first conductive body and a second conductive body, wherein a first end of a first electrical interface is electrically connected with the motor controller, a second end of the first electrical interface is electrically connected with the first conductive body, and a first end of a second electrical interface is electrically connected with the second conductive body; the second end of the second electrical interface is electrically connected with the hub motor. Under the working state, the first electric conductors and the fixing piece are relatively static, and the first electric conductors and the second electric conductors are in one-to-one correspondence and are always in contact with each other, so that electric energy and/or signal transmission is realized. For specific details, reference may be made to the description of the foregoing embodiments, which are not repeated herein.

In one example, to enable transmission of three-phase electrical power, the first electrical interface and the second electrical interface are each a three-terminal interface (e.g., a high voltage bus bar). The three terminals of the input end of the first electrical interface are electrically connected with the three phases of the output end of the motor controller, the three terminals of the output end of the first electrical interface are respectively connected with three first electric conductors through three cables (for example, high-voltage wires), the three terminals of the input end of the second electrical interface are respectively connected with three second electric conductors through three cables, and the three terminals of the output end of the second electrical interface are electrically connected with the three phases of the input end of the hub motor.

In summary, the sliding wire connector provided in all embodiments of the present invention can avoid the problems of cable winding and tearing between the fixed member 1 and the rotating member 2 during the transmission of electric energy and/or signals, and is simple to install and easy to maintain; the sliding wire connector is used for a steering driving system, a steering system and a vehicle, and the problems of cable winding, breaking and the like during steering driving, steering and vehicle turning are well solved.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims

1. The sliding wire connector is characterized by being applied to a steering driving system, wherein the steering driving system comprises a steering mechanism, the steering mechanism comprises a fixed part and a rotating part, a first electric interface is arranged on the fixed part, and a second electric interface is arranged on the rotating part;

the connector for a slide wire includes:

a first conductor and a second conductor;

2. The slickline connector of claim 1,

one of the first conductor and the second conductor is a brush, and the other conductor is a sheet conductor.

3. The slickline connector of claim 2, wherein the brush is fan-shaped; the sheet-shaped electric conductor is a slip ring.

4. The slickline connector of claim 1, further comprising a preload member; the preload piece is used for providing preload for the first electric conductor and/or the second electric conductor.

5. The slickline connector of claim 1,

the value of N is 3;

an included angle between any two first projection lines is 120 degrees;

the included angle between any two second projection lines is 120 degrees.

6. The slickline connector of claim 1,

the slide wire connector further comprises a first insulating shell and a second insulating shell; the rotor further comprises a steering suspension;

7. The slickline connector of claim 6, further comprising a tapered roller bearing;

8. The slide wire connector according to claim 6, wherein said first and second insulative housings have an axial gap in an axial direction; the first and second insulating housings have a radial gap in a radial direction.

9. The slickline connector of claim 8, wherein a sealing ring is disposed within the radial gap.

10. A steering drive system, characterized by comprising: the trolley connector, steering mechanism, motor controller and hub motor of any one of claims 1 to 9;

11. A steering system, comprising: the steering drive system and actuator of claim 10;

12. A vehicle, characterized by comprising: a steering system as claimed in claim 11.