CN111788405A

CN111788405A - Power coupling control system and vehicle

Info

Publication number: CN111788405A
Application number: CN201880089748.XA
Authority: CN
Inventors: 刘磊; 钟虎; 严忆泉
Original assignee: Schaeffler Technologies AG and Co KG
Current assignee: Schaeffler Technologies AG and Co KG
Priority date: 2018-09-03
Filing date: 2018-09-03
Publication date: 2020-10-16
Also published as: DE112018007951T5; WO2020047711A1

Abstract

Provided are a power coupling control system and a vehicle. The power coupling control system comprises a first rotating piece, a second rotating piece, a sliding joint piece (10) and an electromagnetic actuating device, wherein the sliding joint piece (10) and the first rotating piece are coaxially sleeved and are connected in an anti-torsion mode, the electromagnetic actuating device drives the sliding joint piece (10) to axially slide relative to the first rotating piece, so that the first rotating piece and the second rotating piece are coupled or decoupled through the sliding joint piece (10), the electromagnetic actuating device comprises a solenoid (1), an armature (6) which is coaxially sleeved with the solenoid and can axially move, a linkage piece (7) and a return spring (9) arranged between the linkage piece (7) and the second rotating piece, and the linkage piece (7) and the sliding joint piece (10) are coaxially sleeved and are radially arranged between the armature (6) and the sliding joint piece (10).

Description

Power coupling control system and vehicle

Technical Field

The invention relates to the technical field of vehicles. In particular, the invention relates to a power coupling control system and a vehicle comprising the same.

Background

In the power system of a motor vehicle, it is often necessary to provide some devices having a power coupling function to selectively control the transmission of power, such as a clutch device, a transmission device, or a brake device. Currently, the power coupling systems in these devices usually use a dedicated motor as a power source, actuate a shifting fork through a ball screw, and shift a synchronizer by means of the shifting fork, thereby realizing selective output of power. However, such a system requires a separate motor for driving, and the components of the fork device are numerous and complicated, resulting in low reliability and high cost of the system as a whole.

CN 201866218U discloses a gear shifting mechanism, which drives a ratchet mechanism through an electromagnet, and then controls a shifting fork to shift gears circularly. The electromagnet and the shifting fork are vertically arranged on the plane, the overall compactness of the system is low, and the reliability is low.

CN 203876574U discloses a powertrain assembly of an electric vehicle, which controls the engagement of an armature and a planetary carrier through an electromagnetic brake arranged coaxially with a transmission shaft, thereby achieving vehicle braking. The braking device is arranged at one end of the transmission shaft and is arranged in parallel with each group of gears along the axial direction, so that the overall size of the power system is increased, and the vehicle layout design is not facilitated.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to provide a power coupling control system and a vehicle which are compact in structure, easy to control and high in reliability.

The above technical problem is solved by a power coupling control system according to the present invention. The power coupling control system comprises a first rotating piece, a second rotating piece, a sliding joint piece and an actuating device, wherein the sliding joint piece and the first rotating piece are coaxially sleeved and arranged and are connected in an anti-torsion mode, and the actuating device is used for driving the sliding joint piece to axially slide relative to the first rotating piece, so that the first rotating piece and the second rotating piece are coupled or decoupled through the sliding joint piece. According to the technical scheme of the invention, the actuating device is designed into an electromagnetic actuating device, wherein the electromagnetic actuating device comprises a solenoid and an armature iron sleeved and arranged coaxially with the solenoid, the armature iron and the sliding joint piece are coaxially sleeved and arranged and can move axially relative to the solenoid, and the sliding joint piece is arranged on one side of the armature iron, which is far away from the solenoid, in the radial direction; the electromagnetic actuating device also comprises a linkage piece and a return spring arranged between the linkage piece and the second rotating piece, wherein the linkage piece and the sliding joint piece are coaxially sleeved and arranged and are arranged between the armature and the sliding joint piece in the radial direction; when the solenoid is powered on, the armature drives the sliding joint piece to slide towards the second rotating piece along the axial direction through the linkage piece, and when the solenoid is powered off, the linkage piece pushes the armature and the sliding joint piece to slide towards the first rotating piece along the axial direction through the return spring. The power coupling control system pushes the sliding joint part through the electromagnetic actuating device coaxially sleeved on the outer side of the first rotating part so as to control the coupling or decoupling of the first rotating part and the second rotating part, and the power transmission can be directly controlled through the power switch of the electromagnetic actuating device, so that a complex control system is omitted, the system structure is greatly simplified, the control is easy, and the reliability of the system is improved.

According to a preferred embodiment of the invention, the linkage is made of a non-magnetic material. The non-magnetic linkage cannot be magnetized, avoiding the effect on the movement of the armature under the magnetic field of the solenoid.

According to another preferred embodiment of the invention, the first rotating member comprises a drive shaft, and the second rotating member is supported on the drive shaft by a bearing. When the first rotating member is decoupled from the second rotating member, the second rotating member may rotate relative to the first rotating member through the bearing. Preferably, a transmission hub is provided between the sliding engagement element and the drive shaft, by means of which transmission hub the sliding engagement element is connected in a rotationally fixed manner to the drive shaft. The drive shaft drives the sliding joint piece to rotate through the transmission hub, and then drives the second rotating piece to rotate when the sliding joint piece is coupled with the second rotating piece. Wherein a sleeve or snap ring is provided on the drive shaft, which sleeve or snap ring limits the axial movement of the drive hub and/or the second rotational element such that it is axially fixed.

According to another preferred embodiment of the invention, the electromagnetic actuating means is fixed to the housing of the power coupling control system by means of a bracket and the bracket is made of a non-magnetic material, avoiding the risk of the bracket being magnetized to disturb the magnetic field of the solenoid.

According to a further preferred embodiment of the invention, the radial end face of the solenoid facing away from the second rotary part has a flange projecting radially towards the armature, which flange is able to stop the axial movement of the armature away from said second rotary part, avoiding the armature from disengaging from the electromagnetic actuating device due to excessive sliding.

According to another preferred embodiment of the present invention, one end of the return spring is fixed to the second rotating member, and the other end abuts against the link member. The return spring may urge the sliding engagement member away from the second rotating member when the solenoid is de-energized, thereby decoupling the first and second rotating members. Preferably, one end of the return spring engaging the link is provided with a spring plate by which the return spring abuts the link. When the first rotating piece and the second rotating piece are decoupled and rotate relatively, the spring plate can reduce the friction and the abrasion between one end of the spring abutting against the linkage piece and the linkage piece.

According to another preferred embodiment of the present invention, the linkage is integrated with the slide joint, so that the number of parts of the system can be reduced, further improving the compactness and reliability of the structure.

The above problem is also solved by a vehicle according to the present invention, comprising a power coupling control system having the above features.

Drawings

The invention is further described below with reference to the accompanying drawings. Identical reference numbers in the figures denote functionally identical elements. Wherein:

FIG. 1 is a cross-sectional view of a power coupling control system according to an embodiment of the present invention.

Detailed Description

Fig. 1 is a sectional view of a power coupling control system according to an embodiment of the present invention. As shown in fig. 1, the power coupling control system controls the coupling or decoupling between the first rotating member and the second rotating member by the electromagnetic actuating device, thereby controlling the power transmission therebetween. In the present embodiment, the first rotating member is a driving member, which includes a driving shaft 12 and a transmission hub 11, wherein the transmission hub 11 is coaxially sleeved on the driving shaft 12 in a non-rotatable manner (for example, by a spline), so that the driving shaft 12 can drive the transmission hub 11 to rotate synchronously. The sliding engagement element 10 is coaxially fitted over the drive hub 11. The slide joint 10 is connected in a rotationally fixed manner to the drive hub 11 and can slide axially relative to the drive hub 11 (for example by means of splines).

In the present embodiment, the second rotating member is an integrated engaging tooth 13 and output gear 14, both rotatably supported on the drive shaft 12 by a needle bearing 15, and arranged coaxially with the drive shaft 12. Circumferentially extending stop members are provided on the drive shaft 12 at locations corresponding to the radial end surfaces of the drive hub 11 and/or the second rotational member, for example, circumferentially extending bosses or detents 16 may be provided on the drive shaft 12 at locations corresponding to the radial end surfaces of the drive hub 11 facing away from the second rotational member, and circumferentially extending bosses or detents or shoulders may be provided on the drive shaft 12 at locations corresponding to the radial end surfaces of the second rotational member facing away from the drive hub 11, the stop members abutting the corresponding radial end surfaces of the drive hub 11 and/or the second rotational member to axially locate the drive hub 11 and/or the second rotational member relative to the drive shaft 12.

The electromagnetic actuating device is coaxially arranged on the outer side of the first rotating member in a sleeved mode. In this embodiment, the electromagnetic actuating device is a solenoid 1 enclosed in a solenoid housing 2, with a solenoid housing cover 3 mounted to one side of the solenoid housing. The electromagnetic actuator is supported by a bracket 4, the bracket 4 being fastened to the housing of the power coupling control system, for example by means of bolts 5, and the electromagnetic actuator being fixed to the housing of the power coupling control system by means of the bracket 4. The power supply 17 for the solenoid 1 is accessible from the outside, which is not limiting for the invention. The armature 6 of the electromagnetic actuator is coaxially housed inside the solenoid housing 2 and is able to move axially relative to the solenoid housing 2 under the force of a magnetic field generated by the solenoid 1. The radial end face of the solenoid housing 2 facing away from the second rotary part extends radially inward to form a flange 18, and the flange 18 stops the axial movement of the armature 6 in the direction away from the second rotary part, thereby preventing the armature 6 from falling off the electromagnetic actuator. The armature 6 is coaxially arranged outside the slide joint 10 with a linkage 7 disposed therebetween, and the linkage 7 engages the outer circumference of the slide joint 10 and is axially fixed relative thereto. Preferably, the linkage 7 may be mounted with the sliding engagement 10 in a form-fitting manner, or the linkage 7 may be integrated with the sliding engagement 10. The linkage 7 and the support 4 are preferably made of a non-magnetic material, the non-magnetic linkage 7 and the support 4 not being able to be magnetized, so that disturbances of the movement of the armature 6 under the magnetic field of the solenoid 1 are avoided. A return spring 9 is arranged on the second rotating part at a position corresponding to the linkage part 7, one end of the return spring 9 is fixed on the second rotating part, the other end of the return spring is connected with a spring plate 8, and the return spring 9 is abutted on the linkage part 7 through the spring plate 8 in a non-fixed mode.

When the solenoid 1 is energized, the resulting electromagnetic field exerts a magnetic field force on the armature 6, causing the armature 6 to move axially toward the second rotating member against the spring force of the return spring 9. The end of the link element 7 facing the second rotary part is formed, for example, with a radially outwardly extending flange 19, against which the armature 6 pushes, the link element 7 being moved towards the second rotary part and the slide joint 10 being brought into non-rotatable engagement (for example by means of splines) with the engagement teeth 13 of the second rotary part. In this way, the torque of the drive shaft 12 can be transmitted to the second rotating element via the slip joint. When the solenoid 1 is de-energized, the magnetic force acting on the armature 6 disappears, and the linkage member 7 moves axially away from the second rotating member under the action of the elastic force of the return spring 9, thereby disengaging the sliding engagement member 10 from the engagement teeth 13, while the armature 6 is pushed back to the initial position by the flange 19 of the linkage member 7. It should be noted that the linkage member 7 and the armature 6 may be connected by other engagement methods, as long as the armature 6 can push the linkage member 7 to move towards the second rotating member, and the linkage member 7 can push the armature 6 to move away from the second rotating member, which is not limited to the above-mentioned scheme.

The power coupling control system of the present invention can be applied to various fields requiring power coupling/decoupling, such as a gearshift of a vehicle transmission, an engine clutch, etc., in which the first rotating member and the second rotating member may have different structural components, without being limited to the examples listed in the present invention.

Although possible embodiments have been described by way of example in the above description, it should be understood that numerous embodiment variations exist, still by way of combination of all technical features and embodiments that are known and that are obvious to a person skilled in the art. It should also be appreciated that the exemplary embodiment or exemplary embodiments are only examples, and are not intended to limit the scope, applicability, or configuration of the invention in any way. From the foregoing description, one of ordinary skill in the art will more particularly provide a technical guide to convert at least one exemplary embodiment, wherein various changes may be made, particularly in matters of function and structure of the components described, without departing from the scope of the following claims.

Reference numerals

1 solenoid

2 solenoid casing

3 solenoid housing cover

4 support

5 bolt

6 armature

7 linkage member

8 spring plate

9 reset spring

10 sliding joint

11 drive hub

12 drive shaft

13 engaging tooth

14 output gear

15 bearing

16 clasp

17 power supply

18 flange

19 Flange

Claims

A power coupling control system comprises a first rotating member, a second rotating member, a sliding joint (10) and an actuating device, wherein the sliding joint (10) and the first rotating member are coaxially sleeved and arranged and are connected in a torsion-proof manner, the actuating device is used for driving the sliding joint (10) to axially slide relative to the first rotating member, so that the first rotating member and the second rotating member are coupled or decoupled through the sliding joint (10),

it is characterized in that the preparation method is characterized in that,

the actuating device is an electromagnetic actuating device, the electromagnetic actuating device comprises a solenoid (1) and an armature (6) which is coaxially sleeved with the solenoid (1) and can axially move, the armature (6) is coaxially sleeved with the sliding joint piece (10), and the sliding joint piece (10) is radially arranged on one side, away from the solenoid (1), of the armature (6); and is

The electromagnetic actuating device further comprises a linkage piece (7) and a return spring (9) arranged between the linkage piece (7) and the second rotating piece, wherein the linkage piece (7) and the sliding joint piece (10) are coaxially arranged in a sleeved mode and are arranged between the armature (6) and the sliding joint piece (10) in the radial direction, and when the solenoid (1) is electrified, the armature (6) drives the sliding joint piece (10) to slide towards the second rotating piece in the axial direction through the linkage piece (7); when the solenoid (1) is de-energized, the linkage piece (7) pushes the armature (6) and the slide joint piece (10) to slide in the axial direction towards the first rotating piece by means of the return spring (9).
The power coupling control system according to claim 1, characterized in that the linkage (7) is made of a non-magnetic material.
A power coupling control system according to claim 1, characterized in that the first rotating member comprises a drive shaft (12) and the second rotating member is supported on the drive shaft (12) by means of a bearing (15).
A power coupling control system according to claim 3, characterized in that a transmission hub (11) is provided between the slide joint (10) and the drive shaft (12), the slide joint (10) being connected in a rotationally fixed manner to the drive shaft (12) via the transmission hub (11), wherein a bushing or snap ring (16) is provided on the drive shaft (12) for limiting the axial movement of the transmission hub (11) and/or the second rotational element.
The power coupling control system according to claim 1, characterized in that the electromagnetic actuating device is fixed on the housing of the power coupling control system by a bracket (4), and the bracket (4) is made of a non-magnetic material.
The power coupling control system according to claim 1, characterized in that a radial end face of the solenoid (1) facing away from the second rotational member has a flange (18) projecting radially towards the armature (6), the flange (18) being used to stop the armature (6) from moving in an axial direction away from the second rotational member.
The power coupling control system according to claim 1, characterized in that one end of the return spring (9) is fixed to the second rotating member and the other end abuts against the link member (7).
A power coupling control system according to claim 7, characterized in that the end of the return spring (9) engaging the linkage (7) is provided with a spring plate (8), the return spring (9) abutting the linkage (7) via the spring plate (8).
The power coupling control system according to one of claims 1 to 8, characterized in that the linkage piece (7) is integrated with the slide joint (10).
A vehicle comprising a power coupling control system according to one of claims 1-9.