Motor assembly of steer-by-wire redundant structure

Abstract

The utility model relates to the technical field of steer-by-wire, in particular to a motor assembly of a steer-by-wire redundant structure, which comprises a motor outer shell, a motor inner shell is arranged on the inner surface of the motor outer shell, an upper machine cover is fixedly connected to the surfaces of the motor outer shell and the motor inner shell, and a U winding, a V winding and a W winding are arranged on the surfaces of the motor outer shell and the motor inner shell. Wiring pins are arranged on the surface of the upper machine cover, a first connecting cover and a second connecting cover are installed on the surfaces of the wiring pins, and a limiting rod and a sleeve are fixedly connected to the inner surface of the first connecting cover. According to the utility model, the redundant structure is arranged in the motor, and the redundant structure is formed by splitting the half-and-half coils in the three-phase winding to form another three-phase terminal, so that the two three-phase terminals are respectively connected with the controller, and when one of the three-phase terminals fails, the other three-phase terminal can still work normally, so that the structure is simpler, and the cost is reduced. And the safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of wire-controlled steering, in particular to a motor component with a wire-controlled steering redundant structure. Background Art

[0002] The steer-by-wire system is an advanced automotive steering technology that replaces traditional mechanical connections with electronic signals to achieve decoupling between the steering wheel and wheels. The advantages of the steer-by-wire system include simplifying the steering system structure, improving the vehicle's collision safety, and allowing the steering wheel angle and steering torque to be designed independently.

[0003] With the development of the steer-by-wire industry, higher requirements are placed on the performance and safety of steer-by-wire motors. However, existing steer-by-wire motors are all three-phase motors. The internal three-phase windings are connected in a Y-type manner, and finally each phase is connected to a terminal and connected to the controller. This may cause damage to any phase winding among the three phases, and the motor will not work normally, which may easily lead to accidents. Utility Model Content

[0004] The purpose of the present invention is to provide a motor assembly with a redundant structure of wire-controlled steering to solve the problem proposed in the above-mentioned background technology that the wire-controlled steering motors are all three-phase motors, and the internal three-phase windings are connected in a Y-type manner. Finally, each phase is connected to a terminal and connected to a controller. This will cause damage to any phase winding among the three phases, and the motor will not be able to work normally, which is prone to accidents.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a motor assembly with a wire-controlled steering redundant structure, comprising a machine housing, an inner housing provided on the inner surface of the machine housing, an upper machine cover fixedly connected to the surfaces of the machine housing and the inner housing, a U winding, a V winding and a W winding provided on the surfaces of the machine housing and the inner housing, a wiring pin provided on the surface of the upper machine cover, a first connecting cover and a second connecting cover installed on the surface of the wiring pin, the inner surface of the first connecting cover fixedly connected to a limiting rod and a sleeve, the outer surface of the first connecting cover fixedly connected to an abutting rod, the surface of the first connecting cover provided with a groove and a connecting groove, the inner surface of the second connecting cover fixedly connected to an inserting rod, the outer surface of the second connecting cover fixedly connected to a limiting plate, and the surface of the wiring pin provided with a through hole.

[0006] Preferably, the U winding, V winding and W winding are provided in two groups, and the number of the U winding, V winding and W winding in each group is two; the wiring pins are provided in two groups, and the number of the wiring pins in each group is three; the size of the first connecting cover is the same as the size of the second connecting cover; the first connecting cover is abutted against the surface of the second connecting cover; and the limiting rods are provided in two groups.

[0007] Preferably, two groups of the limiting rods are arranged on both sides of the first connecting cover, the number of the limiting rods in one group is two, and the number of the limiting rods in the other group is one, one end of the limiting rod and the sleeve is fixedly connected to the inner surface of the first connecting cover, and the other end of the limiting rod and the sleeve is abutted and connected to the inner surface of the second connecting cover, and the cross-section of the abutting rod is "C"-shaped.

[0008] Preferably, both ends of the abutment rod are fixedly connected to the surface of the first connection cover, and two groups of abutment rods and grooves are provided. The two groups of abutment rods are provided on both sides of the first connection cover, and the two groups of grooves are opened on both sides of the first connection cover.

[0009] Preferably, one end of the insertion rod is fixedly connected to the inner surface of the second connection cover, and the other end of the insertion rod is plug-connected to the inner surface of the sleeve.

[0010] Preferably, there are two groups of limit plates, which are installed on both sides of the second connecting cover. One side of the limit plate is fixedly connected to the surface of the second connecting cover, and the other side of the limit plate is abutted against the surface of the abutting rod. There are two groups of connecting grooves.

[0011] Preferably, the surface of the connecting groove is in the shape of a semicircular hole, one group of the connecting grooves is opened on the surface of the first connecting cover, and the other group of the connecting grooves is opened on the surface of the second connecting cover, and the diameter of the through hole is larger than the outer diameter of the sleeve.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. By setting a redundant structure in the motor, and the redundant structure is to split the half coil in the three-phase winding to form another three-phase terminal, and then the two three-phase terminals are connected to the controller respectively. When one of them fails, the other can still work normally, making the structure simpler and safer. Under the connection of the first connection cover and the second connection cover, the external connection line can be wound around the limit rod, which can avoid the welding point of the wiring pin being directly pulled and causing disconnection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a frontal perspective schematic diagram of the structure of the present utility model;

[0015] Figure 2 This is a left-side perspective diagram of the structure of the present invention;

[0016] Figure 3 This is a schematic top-down perspective cross-sectional view of the structure of the present invention;

[0017] Figure 4This is a partial three-dimensional cross-sectional schematic diagram of the structure of the first connecting cover of the utility model;

[0018] Figure 5 For this utility model Figure 4 A three-dimensional schematic diagram of the structure of the middle limit plate;

[0019] Figure 6 This is a schematic diagram of the utility model.

[0020] In the figure: 1. outer shell; 2. inner shell; 3. upper cover; 4. U winding; 5. V winding; 6. W winding; 7. wiring pins; 8. first connection cover; 9. second connection cover; 10. limit rod; 11. sleeve; 12. abutment rod; 13. groove; 14. insertion rod; 15. limit plate; 16. connection groove; 17. through hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-6 , an embodiment provided by the utility model:

[0023] A motor assembly with a redundant structure of wire-controlled steering includes a housing 1, an inner housing 2 is provided on the inner surface of the housing 1, an upper cover 3 is fixedly connected to the surfaces of the housing 1 and the inner housing 2, a U winding 4, a V winding 5 and a W winding 6 are provided on the surfaces of the housing 1 and the inner housing 2, a wiring pin 7 is provided on the surface of the upper cover 3, a first connection cover 8 and a second connection cover 9 are installed on the surface of the wiring pin 7, a limit rod 10 and a sleeve 11 are fixedly connected to the inner surface of the first connection cover 8, an abutment rod 12 is fixedly connected to the outer surface of the first connection cover 8, a groove 13 and a connection groove 16 are opened on the surface of the first connection cover 8, and the inner surface of the second connection cover 9 It is fixedly connected with a plug rod 14, and the outer surface of the second connection cover 9 is fixedly connected with a limiting plate 15. A through hole 17 is provided on the surface of the wiring pin 7. There are twelve windings in total, including U winding 4, V winding 5 and W winding 6, and they are evenly distributed counterclockwise. The twelve windings are divided into two groups, each with six windings. The two U windings 4 in each group form a U phase, the two V windings 5 in each group form a V phase, and the two W windings 6 in each group form a W phase. The U winding 4, V winding 5 and W winding 6 in each group are connected in parallel. Six windings on one side form a three-phase UVW, and six on the other side form a three-phase UVW. The two groups of UVW are respectively connected to the controller.

[0024] Furthermore, two groups of U windings 4, V windings 5 and W windings 6 are provided, and the number of U windings 4, V windings 5 and W windings 6 in each group is two. Two groups of wiring pins 7 are provided, and the number of wiring pins 7 in each group is three. The size of the first connecting cover 8 is the same as the size of the second connecting cover 9. The first connecting cover 8 is abutted and connected to the surface of the second connecting cover 9. Two groups of limit rods 10 are provided. When the first connecting cover 8 and the second connecting cover 9 are connected, the interface between the wiring pins 7 and the external connecting wires can be protected to prevent the welding points from being directly pulled.

[0025] Furthermore, two groups of limiting rods 10 are arranged on both sides of the first connecting cover 8, one group of limiting rods 10 has two, and the other group of limiting rods 10 has one. One end of the limiting rod 10 and the sleeve 11 are fixedly connected to the inner surface of the first connecting cover 8, and the other end of the limiting rod 10 and the sleeve 11 are abutted and connected to the inner surface of the second connecting cover 9. The cross-section of the abutting rod 12 is "C"-shaped. Under the action of the limiting rod 10, the external connecting wire can be interlaced and wound around a limiting rod 10 close to the wiring pin 7.

[0026] Furthermore, both ends of the abutment rod 12 are fixedly connected to the surface of the first connecting cover 8, and two groups of abutment rods 12 and grooves 13 are provided. The two groups of abutment rods 12 are provided on both sides of the first connecting cover 8, and the two groups of grooves 13 are opened on both sides of the first connecting cover 8. Under the action of the abutment rod 12, the limiting effect of the limiting plate 15 is achieved.

[0027] Furthermore, one end of the insertion rod 14 is fixedly connected to the inner surface of the second connecting cover 9, and the other end of the insertion rod 14 is plugged into the inner surface of the sleeve 11. Through the connection between the sleeve 11 and the insertion rod 14, the first connecting cover 8 and the second connecting cover 9 can be spliced.

[0028] Furthermore, two groups of limit plates 15 are provided, and the two groups of limit plates 15 are installed on both sides of the second connecting cover 9. One side of the limit plate 15 is fixedly connected to the surface of the second connecting cover 9, and the other side of the limit plate 15 is abutted against the surface of the abutting rod 12. Two groups of connecting grooves 16 are provided, and the limit plate 15 is elastic and can move in the groove 13 within the range of elastic deformation.

[0029] Furthermore, the surface of the connecting groove 16 is in the shape of a semicircular hole, one group of connecting grooves 16 is opened on the surface of the first connecting cover 8, and the other group of connecting grooves 16 is opened on the surface of the second connecting cover 9. The diameter of the through hole 17 is larger than the outer diameter of the sleeve 11. The external connecting wire can pass through the first connecting cover 8 and the second connecting cover 9 through the connecting groove 16, and the sleeve 11 passes through the through hole 17 and is connected to the surface of the wiring pin 7 to realize the connection between the wiring pin 7 and the first connecting cover 8 and the second connecting cover 9.

[0030] Working principle: During use, first connect the external connecting wire and the wiring pin 7 through welding technology, and insert the sleeve 11 installed on the first connecting cover 8 into the through hole 17, and start to wind the welded external connecting wire from a limit rod 10 close to the wiring pin 7 so that it is staggered left and right, and placed on the connecting groove 16, and then the second connecting cover 9 is abutted on the first connecting cover 8, so that the insertion rod 14 is inserted into the sleeve 11, and the limit rod 10 and the sleeve 11 are abutted in the second connecting cover 9. At this time, press the limit plates 15 on both sides into the groove 13 so that it passes through the abutting rod 12 and is engaged. During use, when one of the two three-phase terminals fails, the other can still work and the three-phase terminal can still work normally, providing maintenance personnel with maintenance time without affecting normal work.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A motor assembly with a redundant steer-by-wire structure, comprising a housing (1), characterized in that: The inner surface of the outer shell (1) is provided with an inner shell (2), the surfaces of the outer shell (1) and the inner shell (2) are fixedly connected with an upper cover (3), the surfaces of the outer shell (1) and the inner shell (2) are provided with a U winding (4), a V winding (5) and a W winding (6), the surface of the upper cover (3) is provided with a wiring pin (7), the surface of the wiring pin (7) is mounted with a first connection cover (8) and a second connection cover (9), the inner surface of the first connection cover (8) is fixedly connected with a limiting rod (10) and a sleeve (11), the outer surface of the first connection cover (8) is fixedly connected with an abutting rod (12), the surface of the first connection cover (8) is provided with a groove (13) and a connection groove (16), the inner surface of the second connection cover (9) is fixedly connected with an insertion rod (14), the outer surface of the second connection cover (9) is fixedly connected with a limiting plate (15), and the surface of the wiring pin (7) is provided with a through hole (17).

2. The motor assembly of the steer-by-wire redundant structure according to claim 1, characterized in that: The U winding (4), V winding (5) and W winding (6) are provided in two groups, and the number of the U winding (4), V winding (5) and W winding (6) in each group is two; the wiring pins (7) are provided in two groups, and the number of the wiring pins (7) in each group is three; the size of the first connection cover (8) is the same as the size of the second connection cover (9); the first connection cover (8) is abutted against the surface of the second connection cover (9); and the limiting rods (10) are provided in two groups.

3. The motor assembly of the steer-by-wire redundant structure according to claim 2, characterized in that: Two groups of limiting rods (10) are arranged on both sides of the first connecting cover (8), the number of the limiting rods (10) in one group is two, and the number of the limiting rods (10) in the other group is one. One end of the limiting rod (10) and the sleeve (11) are fixedly connected to the inner surface of the first connecting cover (8), and the other end of the limiting rod (10) and the sleeve (11) are abutted and connected to the inner surface of the second connecting cover (9), and the cross section of the abutting rod (12) is "C"-shaped.

4. The motor assembly of the steer-by-wire redundant structure according to claim 3, characterized in that: The two ends of the abutting rod (12) are fixedly connected to the surface of the first connecting cover (8), and two groups of the abutting rod (12) and the groove (13) are provided. The two groups of the abutting rod (12) are provided on both sides of the first connecting cover (8), and the two groups of the groove (13) are opened on both sides of the first connecting cover (8).

5. The motor assembly of the steer-by-wire redundant structure according to claim 1, characterized in that: One end of the insertion rod (14) is fixedly connected to the inner surface of the second connection cover (9), and the other end of the insertion rod (14) is plug-connected to the inner surface of the sleeve (11).

6. The motor assembly of the steer-by-wire redundant structure according to claim 1, characterized in that: Two groups of the limiting plates (15) are provided. The two groups of limiting plates (15) are installed on both sides of the second connecting cover (9). One side of the limiting plate (15) is fixedly connected to the surface of the second connecting cover (9), and the other side of the limiting plate (15) is abutted against the surface of the abutting rod (12). Two groups of connecting grooves (16) are provided.

7. The motor assembly of the steer-by-wire redundant structure according to claim 6, characterized in that: The surface of the connecting groove (16) is in the shape of a semicircular hole. One group of the connecting grooves (16) is opened on the surface of the first connecting cover (8), and the other group of the connecting grooves (16) is opened on the surface of the second connecting cover (9). The diameter of the through hole (17) is larger than the outer diameter of the sleeve (11).

Images