Connector assembly and electric power steering controller

Abstract

The invention discloses a connector assembly and an electric power steering controller, which relate to the technical field of controllers, and comprise a motor, wherein one side of the motor is fixedly connected with a motor output shaft, a worm is arranged at one end of the motor output shaft away from the motor, a worm wheel is meshingly connected with an outer surface of the worm wheel, a steering wheel connecting spline is fixedly installed on one side of the worm wheel, and a steering column is fixedly installed on the other side of the worm wheel; through the arrangement of a monolithic coupling, a clamping block, a rubber block, and a cylindrical push rod, in the process of connecting the motor output shaft with the worm wheel through the monolithic coupling, the coaxiality between the motor output shaft, the monolithic coupling and the worm wheel is maintained, and power transmission is more direct and smooth. In this case, the power output by the motor can be more effectively transmitted to the worm wheel, and energy loss caused by axis deviation is reduced. When the coaxiality between the motor output shaft, the monolithic coupling and the worm wheel is maintained, the centrifugal force and unbalanced force caused by axis deviation can be significantly reduced, thereby reducing vibration and noise levels.

Description

Technical Field

[0001] The present invention relates to the technical field of controllers, in particular to a connector assembly and an electric power steering controller. Background Art

[0002] Electric Power Steering System (EPS) is a new type of power steering device that uses an electric motor as a power source. It has developed rapidly in recent years and is gradually replacing traditional hydraulic and electro-hydraulic power steering gears. Electric power steering systems are generally composed of mechanical steering gears, torque sensors, vehicle speed sensors, EPS controllers, reducers, and motors. According to the different motor layout positions, EPS can generally be divided into three categories: column assist, pinion assist, and rack assist. Among them, the pinion assist type can be divided into single pinion assist type and double pinion assist type, and the rack assist type can be divided into direct assist type and parallel assist type. The motor of the steering column power-assisted EPS is installed on the steering column. The motor drives the steering column through the reducer to achieve power steering. The motor drives the worm gear to rotate. However, during the start, stop or operation of the equipment, sudden acceleration or deceleration, load changes, etc. will generate axial or radial impact loads and internal impact forces, thereby affecting the coaxiality between the motor output shaft and the worm gear. In addition, during the operation of the equipment, the motor and worm will expand due to the increase in temperature. Due to the different thermal expansion coefficients of different materials and the uneven temperature distribution of each part, the relative position between the motor output shaft and the worm will change, thus affecting the coaxiality. Poor coaxiality will cause the relative position between the motor output shaft and the worm to shift, thereby generating additional centrifugal force during operation. This centrifugal force will increase with the increase in speed, causing the equipment to vibrate violently. Long-term vibration will affect the stability and accuracy of the equipment. Poor coaxiality between the motor output shaft and the worm will cause the transmission ratio to change, affecting the output speed and torque of the equipment.

[0003] To solve the above problems, we propose a connector assembly and an electric power steering controller. Summary of the invention

[0004] 1. Technical issues to be resolved In view of this, and in view of the deficiencies in the prior art, the present invention provides a connector assembly and an electric power steering controller to solve the problems raised in the above background technology.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a connector assembly, comprising a motor, a motor output shaft is fixedly connected to one side of the motor, a worm is arranged at one end of the motor output shaft away from the motor, a worm wheel is meshingly connected to the outer surface of the worm, a steering wheel connection spline is fixedly installed on one side of the worm wheel, a steering column is fixedly installed on the other side of the worm wheel, and also comprises a horizontal connection assembly; The horizontal connection component includes card slots respectively opened on the outer surface of the motor output shaft and the end close to the worm, the card slot walls are symmetrically fixedly connected with rubber blocks, a single-piece coupling is arranged between the motor output shaft and the worm, the outer surfaces on both sides of the single-piece coupling are fixedly connected with card blocks, the outer surface of the worm close to the motor output shaft is fixedly connected with a positioning block, a cylindrical push rod is slidably connected through the inside of the positioning block, a positioning spring is sleeved on the outer surface of the cylindrical push rod, a circular positioning piece is inserted and fixed on one end of the cylindrical push rod passing through the positioning block, and the outer surface of the worm is fixedly connected with guide rails in a circular array at equal intervals.

[0007] Preferably, the motor output shaft and the worm are plugged and fixed by a single-piece coupling, the slot is symmetrically arranged with reference to the center of the motor output shaft, the block is symmetrically arranged with reference to the center of the single-piece coupling, the block is plugged and fixed to the slot, both ends of the cylindrical push rod pass through and extend to the outside of the positioning block, and the end of the cylindrical push rod away from the circular positioning piece contacts the outer surface of the single-piece coupling.

[0008] Preferably, the cylindrical push rods are arranged in a circular array with the center of the worm as a reference, the positioning spring is arranged between the positioning block and the circular ring positioning piece, a slide groove is opened inside the circular ring positioning piece, and the circular ring positioning piece is slidably connected to the outer surface of the worm through the slide groove and the guide rail.

[0009] Preferably, it also includes an auxiliary fixing component; The auxiliary fixing assembly includes positioning grooves which are equidistantly arranged in a circular array in the positioning block with the center of the positioning block as a reference. The interior of the positioning groove walls are fixedly connected with steering rods, the outer surfaces of the steering rods are symmetrically sleeved with torsion springs, the outer surfaces of the steering rods are rotatably connected with limit rods, the outer surface of the circular ring positioning piece close to the positioning block is fixedly connected with a sliding block, and the top of the sliding block close to one end of the sliding block is fixedly connected with a special-shaped wedge block.

[0010] Preferably, one end of the torsion spring is fixedly connected to the wall of the positioning groove, and the other end of the torsion spring is fixedly connected to the outer wall of the limit rod. The end of the limit rod away from the steering rod is buckled with the outer surface of the single-piece coupling. The slider is fitted and slidably connected to the worm and the outer surface of the guide rail, and the top surface of the special-shaped wedge block is in conflict with the bottom surface of the limit rod.

[0011] Preferably, it also includes support lubrication components symmetrically arranged at both ends of the worm; The support lubrication assembly includes a support that is slidably connected to the outer surface of the worm, the bottom end of the support is fixedly connected to a support foot, a limit groove is provided inside the support, a resistance rod is slidably connected inside the limit groove, a rubber gasket is fixedly connected to the outer surface of the limit groove near the center of the support, a limit spring is sleeved on the outer surface of the limit groove, and an oil storage tank is provided inside the support.

[0012] Preferably, four groups of limit grooves are provided, and the four groups of limit grooves are arranged in a circular array with the center of the support as a reference. The rubber gasket is arranged in contact with the limit groove wall, and the limit spring is arranged between the limit groove wall and the rubber gasket, and the two ends of the limit spring are respectively fixedly connected to the limit groove wall and the rubber gasket.

[0013] Preferably, four groups of oil storage tanks are provided, each group of oil storage tanks is provided with two oil storage tanks, each group of oil storage tanks is arranged on both sides of the resistance rod, and each group of oil storage tanks is connected to the resistance rod at one end close to the center of the support.

[0014] Preferably, the electric power steering controller comprises A steering wheel connection assembly, used for connecting with a steering wheel; A steering shaft assembly, used to transmit the rotational torque of the steering wheel connection assembly; Cross universal transmission shaft, used to connect the steering shaft assembly and transmit the steering shaft assembly torque; Steering gear, used for vehicle steering and amplifying the torque transmitted by the cross-shaped transmission shaft; The steering wheel connection assembly, the steering shaft assembly, the cross universal transmission shaft and the steering gear arranged in the vertical direction are connected to each other; As mentioned above, the connector assembly can drive the motor to move through the torque sensor arranged in the steering shaft assembly, change the rotational torque of the steering wheel connection assembly, and transmit the changed torque through the steering shaft assembly, the cross universal drive shaft and the steering gear to assist the steering of the vehicle.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present invention provides a connector assembly and an electric power steering controller, which have the following beneficial effects: By setting the monolithic coupling, the clamping block, the rubber block and the cylindrical push rod, in the process of connecting the motor output shaft with the worm through the monolithic coupling, the coaxiality between the motor output shaft, the monolithic coupling and the worm is maintained, and the power transmission is more direct and smooth. In this case, the power output by the motor can be more effectively transmitted to the worm, reducing the energy loss caused by the axis deviation. When the motor output shaft, the monolithic coupling and the worm are kept coaxial, the centrifugal force and unbalanced force caused by the axis deviation can be significantly reduced, thereby reducing the vibration and noise levels; Through the arrangement of the card block, the card slot, the rubber block and the single-piece coupling, the plug-in fixation of the card block and the card slot can assist in the rapid installation between the single-piece coupling and the motor output shaft and the worm. The arrangement of the card block and the card slot can help the rapid positioning between the single-piece coupling and the motor output shaft and the worm, and the squeezing between the card block and the rubber block can increase the stability of the installation of the single-piece coupling and prevent it from falling off. By setting the limit rod and the engagement between the limit rod and the single-piece coupling, the stability of the single-piece coupling can be further maintained, and the limit rods arranged in a circular array apply a clamping force to the single-piece coupling in an all-round direction toward the center of the worm. The uniform clamping force can fix the position of the single-piece coupling while maintaining the horizontality of the single-piece coupling. The horizontal single-piece coupling enhances the connection rigidity between the motor output shaft and the worm, making the entire system more stable and reliable during operation. In addition, maintaining the horizontality of the single-piece coupling can reduce the friction and wear between the motor output shaft and the worm. Through the setting of the clamping block, rubber block and single-piece coupling, the motor output shaft may generate large vibration and axial impact force when rotating at high speed. If these vibrations and impact forces are directly transmitted to the worm, they may cause the worm and its related parts to loosen, deform or even be damaged. The impact between the single-piece coupling and the worm can effectively absorb and disperse these vibrations and impact forces, reduce the impact on the worm and the entire transmission system, and thus protect the equipment from damage; By setting up the resistance rod and the oil storage tank, the lubricant can flow out during the rotation of the worm, and the lubricant can form an oil film on the surface of the worm gear. This oil film can play an isolating role, so that when the worm gear moves relative to each other, the direct contact between the metal surfaces is reduced, thereby reducing the friction coefficient. Through effective lubrication and cooling, the temperature gradient on the surface of the worm gear can be reduced. The existence of temperature gradient will cause thermal stress inside the material, which may cause cracks and deformation under long-term action. Lubrication and cooling can make the temperature distribution on the surface of the worm gear more uniform and reduce the generation of thermal stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention; Figure 2 For the present invention Figure 1 Another perspective structural diagram of; Figure 3 This is a schematic diagram of the connection relationship of the motor of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement in the middle; Figure 5 It is a schematic diagram of the connection relationship between the worm gear and the worm of the present invention; Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at B in the middle; Figure 7 This is a schematic diagram of the connection relationship of the limit rod of the present invention; Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at C in the middle; Fig. 9 It is a schematic diagram of the cross-sectional structure of the single-piece coupling of the present invention; Fig.10 It is a schematic diagram of the connection relationship at the positioning block of the present invention; Fig.11 It is a schematic diagram of the internal cross-section of the support of the present invention; Fig.12 It is a schematic plan view of the internal structure of the support of the present invention.

[0018] In the figure: 11, motor; 12, motor output shaft; 13, worm; 14, worm wheel; 15, steering wheel connection spline; 16, steering column; 21. Slot; 22. Rubber block; 23. Single-piece coupling; 24. Block; 25. Positioning block; 26. Column push rod; 27. Positioning spring; 28. Ring positioning piece; 29. ​​Guide rail; 31. Positioning groove; 32. Steering rod; 33. Torsion spring; 34. Limit rod; 35. Sliding block; 36. Special-shaped wedge; 41. Support; 42. Support foot; 43. Limiting groove; 44. Resistance rod; 45. Rubber gasket; 46. Limiting spring; 47. Oil storage tank; 100. Steering wheel connection assembly; 200. Steering shaft assembly; 300. Cross universal transmission shaft; 400. Steering gear. DETAILED DESCRIPTION

[0019] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0020] Embodiment 1: See also Figures 1 to 11 A connector assembly includes a motor 11, a motor output shaft 12 is fixedly connected to one side of the motor 11, a worm 13 is arranged at one end of the motor output shaft 12 away from the motor 11, a worm wheel 14 is meshedly connected to the outer surface of the worm 13, a steering wheel connecting spline 15 is fixedly installed on one side of the worm wheel 14, and a steering column 16 is fixedly installed on the other side of the worm wheel 14, and also includes a horizontal connection assembly; The horizontal connection component includes a card slot 21 which is respectively opened on the outer surface of the motor output shaft 12 and the worm 13 near one end. The card slot 21 wall is symmetrically fixedly connected with a rubber block 22. A single-piece coupling 23 is arranged between the motor output shaft 12 and the worm 13. Card blocks 24 are fixedly connected to the outer surfaces of both sides of the single-piece coupling 23. A positioning block 25 is fixedly connected to the outer surface of one end of the worm 13 near the motor output shaft 12. A cylindrical push rod 26 is slidably connected to the inside of the positioning block 25. A positioning spring 27 is sleeved on the outer surface of the cylindrical push rod 26. A circular positioning piece 28 is inserted and fixed to one end of the cylindrical push rod 26 passing through the positioning block 25. The outer surface of the worm 13 is equidistantly fixedly connected with guide rails 29 in a circular array.

[0021] Among them, the motor output shaft 12 and the worm 13 are plugged and fixed by a single-piece coupling 23, the slot 21 is centrally symmetrically arranged with the center of the motor output shaft 12 as a reference, the block 24 is centrally symmetrically arranged with the center of the single-piece coupling 23 as a reference, the block 24 is plugged and fixed with the slot 21, both ends of the cylindrical push rod 26 penetrate and extend to the outside of the positioning block 25, and the end of the cylindrical push rod 26 away from the circular positioning piece 28 is in conflict with the outer surface of the single-piece coupling 23.

[0022] Among them, the cylindrical push rod 26 is arranged in a circular array with the center of the worm 13 as a reference, the positioning spring 27 is arranged between the positioning block 25 and the circular ring positioning member 28, and a sliding groove is opened inside the circular ring positioning member 28. The circular ring positioning member 28 is slidably connected to the outer surface of the worm 13 through the sliding groove and the guide rail 29.

[0023] Among them, the cross-section of the block 24 is set to be an isosceles trapezoid, the cross-section of the rubber block 22 is set to be a triangle, and the outer surfaces on both sides of the block 24 are set to be rough planes, which are used to increase the friction between the side of the block 24 and the rubber block 22, and maintain the stability of the single-piece coupling 23 being plugged and fixed with the slot 21 through the block 24.

[0024] Among them, the outer surface of the single-piece coupling 23 close to the worm 13 is equidistantly provided with cylindrical grooves, and the size of the cylindrical grooves is adapted to the cylindrical push rod 26. The cylindrical grooves and the cylindrical push rod 26 can assist the horizontality between the single-piece coupling 23 and the worm 13 in the above process.

[0025] Further examples: See also Figures 6 to 10 , the connector assembly also includes an auxiliary fixing assembly; The auxiliary fixing assembly includes positioning grooves 31 which are equidistantly arranged in a circular array in the positioning block 25 with the center of the positioning block 25 as a reference. The inner part of the groove wall of the positioning groove 31 is fixedly connected with a steering rod 32. The outer surface of the steering rod 32 is symmetrically sleeved with a torsion spring 33. The outer surface of the steering rod 32 is rotatably connected with a limit rod 34. The outer surface of the circular ring positioning member 28 close to the positioning block 25 is fixedly connected with a slider 35. The slider 35 is fixedly connected with a special-shaped wedge block 36 near the top of one end of the slider 35.

[0026] Among them, one end of the torsion spring 33 is fixedly connected to the wall of the positioning groove 31, and the other end of the torsion spring 33 is fixedly connected to the outer wall of the limit rod 34. The end of the limit rod 34 away from the steering rod 32 is buckled with the outer surface of the single-piece coupling 23, the slider 35 is attached and slidably connected to the outer surface of the worm 13 and the guide rail 29, and the top surface of the special-shaped wedge block 36 is in conflict with the bottom surface of the limit rod 34.

[0027] Among them, the torsion spring 33 is in a normal extended state in its initial state, and is not torsionally deformed by external forces. The limit rod 34 is initially in a reference to the center of the positioning block 25, and is rotated 10 to 20 degrees in a direction away from the center of the positioning block 25 with its connection point with the steering rod 32 as a fulcrum. The inner surface of the limit rod 34 away from the steering end is provided with a groove that is compatible with the single-piece coupling 23, and a fitting rubber sheet is fixedly installed on the surface of the groove wall to increase the friction between the limit rod 34 and the single-piece coupling 23.

[0028] Further examples: See also Figure 3 , Figure 4 , Fig.11 and Fig.12 , the connector assembly also includes a support lubrication assembly symmetrically arranged at both ends of the worm 13; The support lubrication assembly includes a support 41 slidably connected to the outer surface of the worm 13, the bottom end of the support 41 is fixedly connected to a support foot 42, a limiting groove 43 is provided inside the support 41, a resistance rod 44 is slidably connected inside the limiting groove 43, a rubber gasket 45 is fixedly connected to the outer surface of the limiting groove 43 near the center of the support 41, a limiting spring 46 is sleeved on the outer surface of the limiting groove 43, and an oil storage tank 47 is provided inside the support 41.

[0029] Among them, four groups of limit grooves 43 are arranged, and the four groups of limit grooves 43 are arranged in a circular array with the center of the support 41 as a reference. The rubber gasket 45 is arranged in contact with the groove wall of the limit groove 43, and the limit spring 46 is arranged between the groove wall of the limit groove 43 and the rubber gasket 45, and the two ends of the limit spring 46 are respectively fixedly connected to the groove wall of the limit groove 43 and the rubber gasket 45.

[0030] Among them, four groups of oil storage tanks 47 are provided, and cooling lubricant is stored in the oil storage tanks 47. Each group of oil storage tanks 47 is provided with two, and each group of oil storage tanks 47 is arranged on both sides of the resistance rod 44, and each group of oil storage tanks 47 is connected to the resistance rod 44 at one end close to the center of the support 41.

[0031] Embodiment 2: See also Figure 1 and Figure 2 , electric power steering controller, including A steering wheel connection assembly 100, used to connect to a steering wheel; The steering shaft assembly 200 is used to transmit the rotation torque of the steering wheel connection assembly 100; The cross universal transmission shaft 300 is used to connect the steering shaft assembly 200 and transmit the torque of the steering shaft assembly 200; The steering gear 400 is used for steering the vehicle and amplifying the torque transmitted by the cross universal transmission shaft 300; The steering wheel connection assembly 100, the steering shaft assembly 200, the cross universal transmission shaft 300 and the steering gear 400 arranged in the vertical direction are connected to each other; As the connector assembly mentioned above, it can drive the motor 11 to move through the torque sensor set in the steering shaft assembly 200, change the rotational torque of the steering wheel connection assembly 100, and transmit the changed torque through the steering shaft assembly 200, the cross universal transmission shaft 300 and the steering gear 400 to assist the steering of the vehicle.

[0032] The working process and principle of the overall content of the above embodiment are as follows: Installation of connector assembly: The assembler connects the motor output shaft 12 and the worm 13 through the single-piece coupling 23. Since the two ends of the single-piece coupling 23 are fixedly connected with the clamping blocks 24, and the motor output shaft 12 and the worm 13 are both provided with clamping grooves 21 at the ends close to each other, and the groove wall of the clamping groove 21 is fixedly connected with the rubber block 22, when the single-piece coupling 23 plugs and fixes the motor output shaft 12 and the worm 13, the clamping block 24 on the single-piece coupling 23 will contact the rubber block 22 on the groove wall of the clamping groove 21 until the clamping block 24 is completely inserted into the inside of the clamping groove 21; It should be noted that the rubber block 22 is made of a deformable material. During the process of the card block 24 and the card slot 21 being plugged and fixed, the card block 24 contacts the rubber block 22. As the card block 24 continues to move inside the card slot 21, the card block 24 gradually applies an extrusion force to the rubber block 22, causing the rubber block 22 to deform and apply an extrusion force to the card block 24 in the reverse direction. When the card block 24 is fully inserted into the card slot 21, the extrusion deformation of the rubber block 22 can assist the card block 24 in being plugged and fixed to the card slot 21. The cross section of the block 24 is set to be an isosceles trapezoid, the cross section of the rubber block 22 is set to be a triangle, and the outer surfaces on both sides of the block 24 are set to be rough planes, so as to increase the friction between the side of the block 24 and the rubber block 22, and maintain the stability of the single-piece coupling 23 being plugged and fixed to the slot 21 through the block 24; As the block 24 is plugged and fixed into the slot 21, the distance between the single-piece coupling 23 and the positioning block 25 fixedly connected to the surface of the worm 13 is gradually shortened, and after the single-piece coupling 23 and the worm 13 are fully connected, the distance between the single-piece coupling 23 and the worm 13 is reduced to the minimum distance; In the above process, since the positioning block 25 is slidably connected with the cylindrical push rod 26, and one end of the cylindrical push rod 26 contacts the surface of the single-piece coupling 23, the shortening of the distance between the single-piece coupling 23 and the positioning block 25 will cause the single-piece coupling 23 to squeeze the cylindrical push rod 26 during the movement, pushing the cylindrical push rod 26 to move in the positioning block 25 in a direction away from the single-piece coupling 23; In addition, as the cylindrical push rod 26 moves, the annular positioning member 28 abutted by the other end of the cylindrical push rod 26 will be simultaneously acted upon by the cylindrical push rod 26. Since the annular positioning member 28 is slidably connected to the outer surface of the worm 13 via the guide rail 29, the annular positioning member 28 is pushed by the cylindrical push rod 26 and moves on the worm 13 in a direction away from the single-piece coupling 23. During the movement of the annular positioning member 28, the positioning spring 27 disposed between the positioning block 25 and the annular positioning member 28 will be stretched. It should be noted that cylindrical grooves are equidistantly formed on the outer surface of the monolithic coupling 23 near the worm 13, and the size of the cylindrical grooves is adapted to the cylindrical push rod 26. The cylindrical grooves and the cylindrical push rod 26 can assist the levelness between the monolithic coupling 23 and the worm 13 in the above process, thereby maintaining the coaxiality between the motor output shaft 12, the monolithic coupling 23 and the worm 13, and avoiding the misalignment between the motor output shaft 12, the monolithic coupling 23 and the worm 13 during the high-speed rotation of the motor output shaft 12, which affects the transmission of the torque of the motor 11; By setting the monolithic coupling 23, the clamping block 24, the rubber block 22, and the cylindrical push rod 26, in the process of connecting the motor output shaft 12 with the worm 13 through the monolithic coupling 23, the coaxiality between the motor output shaft 12, the monolithic coupling 23 and the worm 13 is maintained, and the power transmission is more direct and smooth. In this case, the power output by the motor 11 can be more effectively transmitted to the worm 13, reducing the energy loss caused by the axis deviation. When the motor output shaft 12, the monolithic coupling 23 and the worm 13 maintain coaxiality, the centrifugal force and unbalanced force caused by the axis deviation can be significantly reduced, thereby reducing the vibration and noise levels; Through the arrangement of the block 24, the slot 21, the rubber block 22 and the single-piece coupling 23, the plug-in fixation of the block 24 and the slot 21 can assist in the quick installation of the single-piece coupling 23 and the motor output shaft 12 and the worm 13. The arrangement of the block 24 and the slot 21 can help in the quick positioning of the single-piece coupling 23 and the motor output shaft 12 and the worm 13, and the squeezing between the block 24 and the rubber block 22 can increase the stability of the installation of the single-piece coupling 23 and prevent it from falling off.

[0033] Further fixation between the single-piece coupling 23, the motor output shaft 12 and the worm 13: As the circular ring positioning member 28 moves on the surface of the worm 13, the slider 35 is attached to and slidably connected to the worm 13 and the outer surface of the guide rail 29, and the end of the slider 35 away from the special-shaped wedge 36 is fixedly connected to the circular ring positioning member 28. Therefore, the slider 35 moves on the surface of the worm 13 together with the circular ring positioning member 28. At this time, the special-shaped wedge 36 fixedly connected to the slider 35 will move synchronously with the slider 35 and gradually contact the bottom end of the limit rod 34. In the above process, since the limit rod 34 is rotatably connected to the outer surface of the steering rod 32, and both ends of the rotatable rod are fixedly connected to the wall of the positioning groove 31 provided in the positioning block 25, when the positioning block 25 is fixed on the worm 13, the contact between the special-shaped wedge block 36 and the limit rod 34 will cause the limit rod 34 to rotate toward the direction of the single-piece coupling 23 with the connection point between the limit rod 34 and the steering rod 32 as a fulcrum; The end of the limit rod 34 away from the rotating rod will gradually approach the outer surface of the single-piece coupling 23, and when the special-shaped wedge 36 moves to the final position with the slider 35 and the annular positioning member 28 and cannot move further, the end of the limit rod 34 away from the steering rod 32 will be in a state of being engaged with the surface of the single-piece coupling 23 (see Figure 6 ), during the rotation of the limiting rod 34, the torsion spring 33 disposed between the limiting rod 34 and the wall of the positioning groove 31 will be torsionally deformed; It should be noted that the initial state of the torsion spring 33 is a normal extension state, and is not torsionally deformed by external forces. The initial state of the limit rod 34 is based on the center of the positioning block 25, and the connection point between the limit rod 34 and the steering rod 32 is used as a fulcrum to rotate 10 to 20 degrees in the direction away from the center of the positioning block 25. The inner surface of the end of the limit rod 34 away from the steering is provided with a groove adapted to the single-piece coupling 23, and a fitting rubber sheet is fixedly installed on the surface of the groove wall to increase the friction between the limit rod 34 and the single-piece coupling 23. By setting the limit rod 34 and the engagement between the limit rod 34 and the single-piece coupling 23, the stability of the single-piece coupling 23 can be further maintained, and the limit rods 34 arranged in a ring array apply a clamping force to the single-piece coupling 23 toward the center direction of the worm 13 in all directions. The uniform clamping force can fix the position of the single-piece coupling 23 while maintaining the horizontality of the single-piece coupling 23. The horizontal single-piece coupling 23 enhances the connection rigidity between the motor output shaft 12 and the worm 13, making the entire system more stable and reliable during operation. In addition, maintaining the horizontality of the single-piece coupling 23 can reduce the friction and wear between the motor output shaft 12 and the worm 13.

[0034] The horizontality of the worm 13 is maintained: In the above process, the worm 13 is installed inside the electric power steering controller through the supports 41 provided at both ends thereof, and the supports 41 are fixed inside the electric power steering controller through the bottom support feet 42. The supports 41 are used to keep the two ends of the worm 13 level, and the abutment rod 44 provided inside the limit groove 43 on the support 41, one end close to the center of the support 41, contacts with the outer surfaces of the two ends of the worm 13, so as to keep the worm 13 level during the rotation process; It should be noted that during the installation of the above-mentioned single-piece coupling 23 and the worm 13, the motor output shaft 12, the single-piece coupling 23, and the worm 13 are in a coaxial state.

[0035] Use of electric power steering controller: When the electric power steering controller is used, since the electric power steering controller needs to fix the steering wheel connection spline 15 with the steering wheel when in use, the driver can cause the steering wheel connection assembly 100 to move by turning the steering wheel, and then the torque sensor arranged inside the steering shaft assembly 200 will receive the steering wheel rotation torque signal, and the control module will judge the steering state of the car according to the torque signal and vehicle speed signal detected by the torque sensor and the voltage and current signal of the feedback motor 11, and send a control instruction to the drive unit to give the motor 11 a voltage with a certain duty cycle, so that the motor 11 generates an auxiliary force of corresponding magnitude according to the angle and direction of the steering wheel rotation, and transmits it to the steering column 16 through the worm gear 14 and the worm 13, and then transmits it to the steering gear 400 through the steering shaft assembly 200 and the cross universal transmission shaft 300, and finally completes the steering of the car; In the above process, as the motor 11 controls the rotation of the motor output shaft 12, the motor output shaft 12 drives the worm 13 to rotate through the single-piece coupling 23. Since both ends of the single-piece coupling 23 are engaged with the rubber block 22 in the slot 21 through the clamping block 24, as the single-piece coupling 23 rotates, the single-piece coupling 23 is subjected to centrifugal force and simultaneously applies pressure to the rubber block 22 through the clamping block 24, thereby maintaining the stability of the connection between the single-piece coupling 23 and the motor output shaft 12 and the worm 13. By setting the clamping block 24, the rubber block 22 and the single-piece coupling 23, the motor output shaft 12 may generate large vibration and axial impact force when rotating at high speed. If these vibrations and impact forces are directly transmitted to the worm 13, they may cause the worm 13 and its related parts to loosen, deform or even be damaged. The impact between the single-piece coupling 23 and the worm 13 can effectively absorb and disperse these vibrations and impact forces, reduce the impact on the worm 13 and the entire transmission system, and thus protect the equipment from damage. As the worm 13 rotates at high speed, the support 41 always limits the position of the worm 13 and keeps the worm 13 level during the rotation process. In addition, as the worm 13 continues to rotate at high speed, friction between the worm 13 and the worm wheel 14 gradually generates heat. At this time, the worm 13 will have a certain degree of thermal expansion under the high temperature state. In this state, the abutment rod 44 that is in contact with the surface of the worm 13 will be squeezed by the worm 13, and move along the center of the support 41 toward the outer circle of the support 41. In the above process, as the abutment rod 44 moves, the rubber gasket 45 fixedly connected to the outer surface of the abutment rod 44 moves accordingly, and cooperates with the groove wall of the limiting groove 43 during the movement, compressing the limiting spring 46 disposed therebetween; It should be noted that, since the limiting groove 43 is connected to the bottom ends of the oil storage grooves 47 arranged on both sides of the limiting groove 43, the rubber gasket 45 blocks the connection between the limiting groove 43 and the oil storage groove 47 in the initial state, so as the rubber gasket 45 moves, it will gradually leave the connection between the limiting groove 43 and the oil storage groove 47, so that the cooling lubricant stored in the oil storage groove 47 flows out of the oil storage groove 47, and flows to the outer surface of the worm 13 through the surface of the limiting groove 43, and then flows along the worm 13 to the connection between the worm 13 and the worm wheel 14, so as to lubricate and cool the surface of the worm 13 and the worm wheel 14; The lubricant can form an oil film on the surface of the worm wheel 14 and worm 13. This oil film can play an isolating role, reducing the direct contact between the metal surfaces of the worm wheel 14 and worm 13 when they are in relative motion, thereby reducing the friction coefficient. In addition, the temperature gradient on the surface of the worm wheel 14 and worm 13 can be reduced through effective lubrication and cooling. The existence of a temperature gradient can cause thermal stress inside the material, which may cause cracks and deformation under long-term action. Lubrication and cooling can make the temperature distribution on the surface of the worm wheel 14 and worm 13 more uniform, thereby reducing the generation of thermal stress.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connector assembly, comprising a motor (11), a motor output shaft (12) fixedly connected to one side of the motor (11), a worm (13) being arranged at one end of the motor output shaft (12) away from the motor (11), a worm gear (14) being meshingly connected to the outer surface of the worm gear (13), a steering wheel connecting spline (15) fixedly mounted to one side of the worm gear (14), and a steering column (16) fixedly mounted to the other side of the worm gear (14), characterized in that: Also included are horizontal connection components; The horizontal connection assembly comprises a clamping groove (21) respectively provided on the outer surface of the motor output shaft (12) and the worm (13) at one end thereof, a rubber block (22) being symmetrically fixedly connected to the groove wall of the clamping groove (21), a single-piece coupling (23) being provided between the motor output shaft (12) and the worm (13), clamping blocks (24) being fixedly connected to the outer surfaces of both sides of the single-piece coupling (23), a positioning block (25) being fixedly connected to the outer surface of one end of the worm (13) at the motor output shaft (12), a cylindrical push rod (26) being slidably connected thereinto, a positioning spring (27) being sleeved on the outer surface of the cylindrical push rod (26), a circular positioning piece (28) being inserted and fixedly connected to one end of the cylindrical push rod (26) passing through the positioning block (25), and a guide rail (29) being fixedly connected to the outer surface of the worm (13) at equal intervals in a circular array.

2. A connector assembly according to claim 1, characterized in that: The motor output shaft (12) and the worm (13) are plugged and fixed via a single-piece coupling (23); the slot (21) is centrally symmetrically arranged with the center of the motor output shaft (12) as a reference; the block (24) is centrally symmetrically arranged with the center of the single-piece coupling (23) as a reference; the block (24) is plugged and fixed with the slot (21); both ends of the columnar push rod (26) penetrate and extend to the outside of the positioning block (25); and one end of the columnar push rod (26) away from the circular positioning member (28) contacts the outer surface of the single-piece coupling (23).

3. A connector assembly according to claim 1, characterized in that: The cylindrical push rods (26) are arranged in a circular array with the center of the worm (13) as a reference. The positioning spring (27) is arranged between the positioning block (25) and the circular ring positioning member (28). A sliding groove is provided inside the circular ring positioning member (28). The circular ring positioning member (28) is slidably connected to the outer surface of the worm (13) through the sliding groove and the guide rail (29).

4. A connector assembly according to claim 1, characterized in that: Also included is an auxiliary fixation assembly; The auxiliary fixing assembly comprises positioning grooves (31) which are equidistantly arranged in a circular array in the positioning block (25) with the center of the positioning block (25) as a reference, the inner part of the groove wall of the positioning groove (31) is fixedly connected to a steering rod (32), the outer surface of the steering rod (32) is symmetrically sleeved with a torsion spring (33), the outer surface of the steering rod (32) is rotatably connected to a limit rod (34), the outer surface of the circular ring positioning member (28) is fixedly connected to a slider (35) on one side close to the positioning block (25), and the top of the slider (35) is fixedly connected to a special-shaped wedge (36) close to one end of the slider (35).

5. A connector assembly according to claim 4, characterized in that: One end of the torsion spring (33) is fixedly connected to the groove wall of the positioning groove (31), and the other end of the torsion spring (33) is fixedly connected to the outer wall of the limit rod (34). The end of the limit rod (34) away from the steering rod (32) is buckled with the outer surface of the single-piece coupling (23). The slider (35) is attached to and slidably connected to the outer surface of the worm (13) and the guide rail (29), and the top surface of the special-shaped wedge (36) is in contact with the bottom surface of the limit rod (34).

6. A connector assembly according to claim 1, characterized in that: It also includes support lubrication components symmetrically arranged at both ends of the worm (13); The support lubrication assembly comprises a support (41) slidably connected to the outer surface of the worm (13), the bottom end of the support (41) is fixedly connected to a support foot (42), a limit groove (43) is provided inside the support (41), a resistance rod (44) is slidably connected inside the limit groove (43), a rubber gasket (45) is fixedly connected to the outer surface of the limit groove (43) near the center of the support (41), a limit spring (46) is sleeved on the outer surface of the limit groove (43), and an oil storage tank (47) is provided inside the support (41).

7. A connector assembly according to claim 6, characterized in that: Four groups of limit grooves (43) are provided, and the four groups of limit grooves (43) are arranged in a ring array with the center of the support (41) as a reference. The rubber gasket (45) is arranged in contact with the groove wall of the limit groove (43). The limit spring (46) is arranged between the groove wall of the limit groove (43) and the rubber gasket (45), and the two ends of the limit spring (46) are respectively fixedly connected to the groove wall of the limit groove (43) and the rubber gasket (45).

8. A connector assembly according to claim 7, characterized in that: Four groups of oil storage tanks (47) are provided, each group of oil storage tanks (47) is provided with two oil storage tanks, each group of oil storage tanks (47) is arranged on both sides of the abutment rod (44), and one end of each group of oil storage tanks (47) close to the center of the support (41) is connected to the abutment rod (44).

9. An electric power steering controller, applied to a connector assembly according to any one of claims 1 to 8, characterized in that: include A steering wheel connection assembly (100), used to be connected to a steering wheel; A steering shaft assembly (200) for transmitting a rotational torque of the steering wheel connection assembly (100); A cross universal transmission shaft (300) is used to connect the steering shaft assembly (200) and transmit the torque of the steering shaft assembly (200); A steering gear (400) is used for steering the vehicle and amplifying the torque transmitted by the cross universal transmission shaft (300); A steering wheel connection assembly (100), a steering shaft assembly (200), a cross universal transmission shaft (300), and a steering gear (400) arranged in a vertical direction are connected to each other; The connector assembly described above can drive the motor (11) to move via a torque sensor disposed in the steering shaft assembly (200), thereby changing the rotational torque of the steering wheel connection assembly (100), and transmitting the changed torque via the steering shaft assembly (200), the cross universal transmission shaft (300) and the steering gear (400), thereby assisting the steering of the vehicle.

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