Integrated electric steering engine

Abstract

The invention discloses an integrated electric steering engine, which belongs to the technical field of servo systems and comprises a body, a rocker arm output mechanism and a driving mechanism. A containing space is formed in the body, and a first through hole, a first limiting piece and a second limiting piece are arranged in the containing space. The rocker arm output mechanism comprises a rocker arm output shaft, one end of the rocker arm output shaft is rotationally arranged on the first limiting piece, and the side wall face of the rocker arm output shaft is rotationally matched with the first through hole. A U-shaped support is arranged on the rocker arm output shaft, and sliding grooves are oppositely formed between the two supporting arms. The driving mechanism comprises a driving lead screw, a lead screw nut is arranged on the driving lead screw, and the lead screw nut is embedded in the sliding groove in a sliding mode. The invention provides an integrated electric steering engine, which can integrate driving and transmission of the steering engine, can reduce the size of the steering engine as much as possible while ensuring the stable operation of the steering engine, and improves the power density, miniaturization and integration degree of a steering system so as to adapt to the asymmetrical installation requirement of an irregular cabin section on the steering engine.

Description

Technical Field

[0001] The invention belongs to the technical field of servo systems, and in particular relates to an integrated electric steering gear. Background Art

[0002] High-speed small aircraft are widely used in all walks of life in social and economic development due to their convenience, flexibility and low cost. With the rapid development of high-speed small aircraft, the space size requirements of high-speed small aircraft systems are becoming increasingly stringent, which in turn affects the overall layout of the installation positions of various subsystems inside high-speed small aircraft.

[0003] As an important actuator for the flight control of high-speed small aircraft, the electric rudder system plays a key role in the normal operation of high-speed small aircraft. In the prior art, usually, the cabin is a regular cylinder, the space on the cabin is relatively ample, and the four servos are usually symmetrically distributed on the cabin. For high-speed small aircraft with an irregular cylindrical cabin, not only is the size of the cabin relatively small, but other products also need to be arranged in the center of the cabin. Therefore, the four servos need to be installed in the relatively narrow gap on the cabin, and the installation positions of the servos on the irregular cylinder are asymmetrical, and the existing servos cannot be installed on the rudder cabin with an irregular cylindrical shape. Summary of the invention

[0004] In response to one or more of the above-mentioned defects or improvement needs in the prior art, the present invention provides an integrated electric steering gear, which can integrate the drive and transmission of the steering gear, while ensuring the stable operation of the steering gear and reducing the size of the steering gear as much as possible, thereby improving the power density and the degree of miniaturization and integration of the rudder system, and significantly improving the space utilization of the cabin to adapt to the asymmetric installation requirements of the steering gear in irregular cabins.

[0005] To achieve the above object, the present invention provides an integrated electric steering gear, comprising: A body, wherein a receiving space is provided in the body, wherein the receiving space is provided with a first through hole and a first stopper arranged at intervals along a first direction, and two second stoppers arranged at intervals along a second direction; the projections of the first direction and the second direction along a third direction are perpendicular to each other; and the first through hole communicates with the receiving space and the outside of the body; A rocker arm output mechanism, the rocker arm output mechanism comprising a rocker arm output shaft extending in a first direction, one end of the rocker arm output shaft being rotatably disposed on the first limit member, the other end of the rocker arm output shaft extending out of the first through hole, and a side wall surface of the rocker arm output shaft being rotatably matched with the first through hole; A U-shaped bracket is arranged on the outer wall surface of the rocker arm output shaft, two arms of the U-shaped bracket are arranged at intervals along the first direction, and a sliding groove is arranged opposite to each other between the two arms; A driving mechanism, the driving mechanism comprising a driving lead screw arranged between the two second position-limiting members, a lead screw nut moving along the second direction being arranged on the driving lead screw, and the lead screw nut being slidably embedded in the sliding groove; The lead screw nut is configured as follows: the driving lead screw rotates to drive the lead screw nut to move along the second direction, and the lead screw nut slides relative to the sliding groove to push the U-shaped bracket and the rocker arm output shaft to rotate.

[0006] As a further preferred embodiment of the present invention, a rotating column is provided on one side of the lead screw nut embedded in the sliding groove, the rotating column is rotatably embedded in the rotating hole of the square slider, and the square slider is slidably embedded in the sliding groove.

[0007] As a further preferred embodiment of the present invention, an inner bearing groove is provided at the end of the rocker arm output shaft, the inner bearing groove is sleeved on the outer side of the first limiting member, and a second bearing is provided between the inner bearing groove and the first limiting member for rotational connection between the rocker arm output shaft and the first limiting member.

[0008] As a further preferred embodiment of the present invention, a flange is provided at a position on the outer side of the body corresponding to the first through hole, the flange is detachably fixed to the outer side of the body, and a first bearing groove is provided on the inner wall surface of the flange facing the rocker arm output shaft; A shaft shoulder is arranged on the outer wall surface of the rocker arm output shaft facing the first through hole, and a first bearing is arranged between the shaft shoulder and the first bearing groove for rotating the rocker arm output shaft.

[0009] As a further preferred embodiment of the present invention, a clearance groove with a trapezoidal cross-section is provided on the side wall surface of the rocker arm output shaft between the shaft shoulder and the inner bearing groove, which is used for rotational clearance of the driving screw after passing through the U-shaped bracket.

[0010] As a further preferred embodiment of the present invention, the second limiting member is two second through holes opened on the side wall of the main body, and the two ends of the driving screw are respectively rotatably connected in the second through holes; and a screw input end is provided at at least one end of the driving screw, and the screw input end extends out of the second through hole.

[0011] As a further preferred embodiment of the present invention, the driving mechanism further includes a driving motor and a reduction assembly; The drive motor is arranged outside the body, and the motor output end of the drive motor is parallel to the screw input end; the reduction assembly is arranged between the motor output end and the screw input end, and is used for reduction transmission between the drive motor and the drive screw.

[0012] As a further preferred embodiment of the present invention, a shell is provided on one side of the body where the reduction assembly is provided, for forming a reduction space outside the body for accommodating the reduction assembly.

[0013] As a further preferred embodiment of the present invention, at least one position sensor is provided between the lead screw nut and the inner wall surface of the accommodating space for detecting the moving position of the lead screw nut in real time.

[0014] As a further preferred embodiment of the present invention, it further comprises a control mechanism, wherein the control mechanism comprises a driving plate and a driving module, the driving plate is fixed on one side of the body, and the driving module is fixedly mounted on the driving plate.

[0015] In general, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects: (1) The integrated electric servo of the present invention comprises a body, a rocker arm output mechanism and a driving mechanism. A storage space is provided in the body, and a first through hole and a first stopper arranged at intervals along a first direction and two second stoppers arranged at intervals along a second direction are provided in the storage space. The projections of the first direction and the second direction along a third direction are perpendicular to each other. In addition, the first through hole communicates with the storage space and the outside of the body. The rocker arm output mechanism comprises a rocker arm output shaft extending along the first direction, one end of the rocker arm output shaft being rotatably arranged on the first stopper, the other end of the rocker arm output shaft extending out of the first through hole, and the side wall surface of the rocker arm output shaft being rotatably matched with the first through hole. A U-shaped bracket is provided on the outer wall surface of the rocker arm output shaft, and two arms of the U-shaped bracket are arranged at intervals along the first direction, and a sliding groove is provided between the two arms. The driving mechanism comprises a driving screw provided between the two second stoppers, and a screw nut moving along the second direction is provided on the driving screw, and the screw nut is slidably embedded in the sliding groove. The present invention provides an integrated electric steering gear that can integrate the drive and transmission of the steering gear, while ensuring the stable operation of the steering gear and reducing the size of the steering gear as much as possible, thereby improving the power density and miniaturization and integration of the rudder system, and significantly improving the space utilization of the cabin to adapt to the asymmetric installation requirements of the steering gear in irregular cabins.

[0016] (2) The integrated electric servo of the present invention has a position sensor disposed between the body and the lead screw nut, so that the detection end of the position sensor can abut against the lead screw nut, so that the electric servo can accurately determine the movement position of the lead screw nut along the second direction in real time, thereby realizing accurate monitoring of the rotation posture of the rocker arm output shaft. At the same time, by providing a mounting hole for the position sensor on the body and eccentrically arranging the mounting hole relative to the central axis of the driving lead screw, the size of the body in the first direction can be reduced while ensuring accurate detection of the lead screw nut by the position sensor, so that the servo can adapt to the installation of the special-shaped space of the asymmetric cabin section.

[0017] (3) The integrated electric servo of the present invention has a small size, high integration, and high power density. It uses a driving screw and a screw nut to slide and push the sliding groove on the U-shaped bracket, so that the rocker arm output shaft rotates around the axis as the U-shaped bracket moves, thereby ensuring that the rocker arm output shaft can stably output rotation. At the same time, through the first limiter provided on the side wall of the body and the inner bearing groove provided at the end of the rocker arm output shaft, the rocker arm output shaft is rotatably connected to the inner bearing of the body, thereby significantly reducing the size of the electric servo along the first direction. In addition, by providing a trapezoidal-shaped clearance groove on the side wall of the rocker arm output shaft, the structural strength of the rocker arm output shaft toward the end of the first limiter is improved, and the driving screw can also be rotated during the movement process. The size of the body in the third direction is further reduced, and the volume of the entire electric servo is further reduced to meet the asymmetric installation requirements of the servo in irregular compartments, and has good promotion prospects and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a cross-sectional view of the integrated electric servo in the embodiment of the present invention along the axial direction of the driving screw; Figure 2 is a cross-sectional view of the integrated electric servo in the embodiment of the present invention along the axial direction of the rocker arm output shaft; Figure 3 is a three-dimensional diagram of a rocker arm output shaft of an integrated electric servo in an embodiment of the present invention; Figure 4 is a cross-sectional view of the integrated electric servo along the rocker arm output shaft in an embodiment of the present invention; Figure 5 It is a schematic diagram of the docking installation surface of the rocker arm output shaft of the integrated electric steering gear in an embodiment of the present invention.

[0019] In all the drawings, the same reference numerals represent the same technical features, specifically: 1. Drive motor; 2. Main body; 3. Rocker arm output shaft; 301. Inner bearing groove; 302. Shoulder; 303. Sliding groove; 4. Drive screw; 5. Third bearing; 6. Bearing end cover; 7. Position sensor; 8. Housing; 9. Large gear; 10. Dual gear; 11. Drive plate; 12. Drive module; 13. Transition gear; 14. Cover plate; 15. Small gear; 16. Second bearing; 17. First bearing; 18. Direction slider; 19. Screw nut; 20. Flange; 21. Make way groove; 22. Flange through hole. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] Example: See also Figures 1 to 5 The integrated electric steering gear in the preferred embodiment of the present invention can integrate the drive and transmission of the steering gear, while ensuring the stable operation of the steering gear, it can also reduce the size of the steering gear as much as possible, thereby improving the power density and miniaturization and integration of the rudder system, and significantly improving the space utilization of the cabin, so as to adapt to the asymmetric installation requirements of the steering gear in irregular cabins.

[0026] Specifically, in a preferred embodiment of the present application, the integrated electric servo includes a body 2, a rocker arm output mechanism, and a drive mechanism. Among them, a storage space is provided inside the body 2 for accommodating the rocker arm output mechanism. Specifically, a first through hole and a first stopper arranged at intervals along the first direction and two second stoppers arranged at intervals along the second direction are provided in the storage space for installation of the rocker arm output mechanism and the drive mechanism, respectively. Furthermore, the projections of the first direction and the second direction along the third direction are perpendicular to each other, and the first through hole connects the storage space and the outer space of the body 2, so that the rocker arm output mechanism can output rotation through the first through hole.

[0027] The rocker arm output mechanism includes a rocker arm output shaft 3 extending in a first direction, one end of the rocker arm output shaft 3 is rotatably arranged on a first stopper, and accordingly, the other end of the rocker arm output shaft 3 extends out of a first through hole, and the side wall surface of the rocker arm output shaft 3 is rotatably matched with the first through hole, so that the rocker arm output shaft 3 can rotate around the central axis. At the same time, a U-shaped bracket is arranged on the outer wall surface of the rocker arm output shaft 3, and two arms of the U-shaped bracket are arranged at intervals in the first direction, and further, a sliding groove 303 is relatively arranged between the two arms, so that the driving mechanism can drive the rocker arm output shaft 3 to rotate with the aid of the arm.

[0028] The driving mechanism includes a driving screw 4 arranged between two second limit members. Meanwhile, a screw nut 19 moving along the second direction is arranged on the driving screw 4 . Accordingly, the screw nut 19 is slidably embedded in the sliding groove 303 .

[0029] During actual use, the drive screw 4 is rotated to drive the screw 4 nut to move along the second direction. At the same time, during the movement of the screw nut 19 along the second direction, the screw nut 19 pushes the U-shaped bracket to rotate. Moreover, since the screw nut 19 reciprocates linearly in the second direction, and the U-shaped bracket rotates around the axis of the rocker arm output shaft 3, combined with the sliding cooperation between the screw nut 19 and the sliding groove 303, the screw nut 19 can drive the rocker arm output shaft 3 to rotate around the axial direction.

[0030] It is worth noting that the extension direction of the rocker arm output shaft 3 is the first direction, the extension direction of the driving screw 4 is the second direction, and the direction perpendicular to the first direction and the second direction is the third direction.

[0031] Furthermore, in the preferred embodiment of the present application, a rotating column is provided on one side of the sliding groove 303 on which the lead screw nut 19 is embedded. At the same time, a rotating hole extending along the first direction is provided on the square slider. At the same time, the rotating column is embedded in the rotating hole of the square slider, thereby forming a rotating fit between the rotating column and the rotating hole, so that the lead screw nut 19 can convert its own movement along the second direction into rotation of the rocker arm output shaft 3 around the axial direction.

[0032] Further preferably, in the preferred embodiment of the present application, the size of the square slider in the second direction is the same as the size of the sliding groove 303 in the second direction, so that when the directional slider 18 is embedded in the sliding groove 303, it can ensure that the side walls of the directional slider 18 on both sides in the second direction can respectively abut the two side walls of the sliding groove 303 in the second direction, so that the linear motion of the lead screw nut 19 can adjust the rotation of the rocker output shaft 3. Preferably, the two side walls of the square slider in the second direction and the inner groove wall of the sliding groove 303 in the second direction are clearance-matched.

[0033] In more detail, in a preferred embodiment of the present application, the size of the screw nut 19 along the first direction is the same as the size between the two arms of the U-shaped bracket along the first direction, so that the two side walls of the screw nut 19 along the first direction can respectively abut against the bottom end surfaces of the arm sliding groove 303, thereby enabling the screw nut 19 to drive the U-shaped bracket to rotate stably around the axial direction, thereby significantly improving the movement stability of the servo.

[0034] Further, in the preferred embodiment of the present application, an inner bearing groove 301 is provided at the end of the rocker arm output shaft 3, and the inner bearing groove 301 is sleeved on the outside of the first limiting member, and a second bearing 16 is provided between the inner bearing groove 301 and the first limiting member, so that the end of the rocker arm output shaft 3 away from the first through hole can be rotationally limited around the first limiting member. Preferably, the first limiting member is a cylindrical boss provided on the inner wall surface of the accommodating space and extending in the first direction, and accordingly, the inner bearing groove 301 is also an annular structure, and the inner bearing groove 301 is coaxially sleeved on the outside of the cylindrical boss, and a second bearing 16 is provided between the inner bearing groove 301 and the circular boss.

[0035] Further preferably, in the preferred embodiment of the present application, the position of the inner bearing groove 301 on the side of the U-shaped bracket facing the first limit member is set on the side wall surface of the rocker arm output shaft 3, so as to make full use of the space inside the U-shaped bracket and significantly shorten the length of the rocker arm output shaft 3 along the first direction. While ensuring the stable operation of the steering gear, the size of the steering gear can be reduced as much as possible, and the space required for the installation of the steering gear is reduced, thereby greatly improving the applicability of the steering gear to irregular compartments.

[0036] Further, in the preferred embodiment of the present application, a flange 20 is arranged at a position corresponding to the first through hole on the outside of the body 2, and preferably, the first through hole is an opening arranged on the side of the body 2 away from the first stopper. The flange 20 is detachably fixed to the outside of the body 2, and a first bearing groove is arranged on the inner wall surface of the flange 20 facing the rocker arm output shaft 3, and correspondingly, a shaft shoulder 302 is arranged on the outer wall surface of the rocker arm output shaft 3 facing the first through hole, and a first bearing 17 is arranged between the shaft shoulder 302 and the first bearing groove, so as to realize the rotational cooperation of the end of the rocker arm output shaft 3 away from the first stopper and the limit of movement along the first direction.

[0037] Further preferably, in the preferred embodiment of the present application, a flange through hole 22 is provided on the flange 20 and passes through the flange 20 in the first direction, and the end of the rocker arm output shaft 3 away from the first stopper corresponds to the flange through hole 22, so that other mechanisms such as wing plates can pass through the flange through hole 22 and be fixedly connected to the rocker arm output shaft 3, ensuring that the integrated electric servo can operate stably. Preferably, the central axis of the flange through hole 22 is collinear with the central axis of the rocker arm output shaft 3.

[0038] In more detail, in the preferred embodiment of the present application, since an inner bearing groove 301 is arranged at the end of the rocker arm support shaft toward the first limit piece, in order to ensure the structural strength of the rocker arm support shaft, the radial dimension of the rocker arm support shaft in the direction from the first limit piece to the first through hole is reduced successively, and then a makeshift groove 21 with a trapezoidal cross-sectional shape is formed on the side wall of the rocker arm support shaft between the two arms, so as to make way for the rotation of the drive screw 4 after passing through the U-shaped bracket, so that the relative distance between the rocker arm output shaft 3 and the drive screw 4 can be reduced, thereby further reducing the size of the servo.

[0039] Further, in a preferred embodiment of the present application, a through hole is opened inside the rocker arm support shaft along the first direction, and preferably, the through hole is a stepped hole.

[0040] Further preferably, in the preferred embodiment of the present application, the second stopper is two second through holes opened on the side wall of the body 2, and at the same time, the two ends of the driving screw 4 are respectively rotatably connected in the second through holes, so that the driving screw 4 can be supported by the two second through holes to ensure the rotation of the driving screw 4 around the central axis. Preferably, a screw input end is provided at at least one end of the driving screw 4, and at the same time, the screw input end extends out of the second through hole.

[0041] In more detail, in the preferred embodiment of the present application, a third bearing 5 is provided between the driving screw 4 and the second through hole, so that the driving screw 4 can be rotatably fixed on the body 2. Preferably, the second through hole passes through the side wall of the body 2. Further preferably, a bearing end cover 6 is provided on the side of the driving screw 4 away from the screw input end to achieve blocking of the end of the driving screw 4.

[0042] Furthermore, in a preferred embodiment of the present application, the driving mechanism further comprises a driving motor 1 and a reduction assembly. The driving motor 1 is arranged outside the body 2, and the motor output end of the driving motor 1 is parallel to the screw input end. The reduction assembly is arranged between the motor output end and the screw input end, and is used for the reduction transmission between the driving motor 1 and the driving screw 4.

[0043] Further preferably, in the preferred embodiment of the present application, the reduction assembly includes a pinion 15 arranged on the drive output end, a large gear 9 arranged on the screw input end, and a transition gear 13 and a double gear 10 arranged in sequence along the third direction. Among them, the double gear 10 is coaxially provided with a large diameter wheel and a small diameter wheel along the second direction, and the transition gear 13 is meshed with the pinion 15 and the large diameter wheel at the same time, and the small diameter wheel is meshed with the large gear 9, thereby realizing the reduction connection between the drive motor 1 and the drive screw 4.

[0044] In more detail, in a preferred embodiment of the present application, a shell 8 is provided on one side of the main body 2 where the reduction assembly is provided, so as to form a reduction space for accommodating the reduction assembly on one side of the main body 2, thereby preventing external debris from invading the interior of the reduction assembly, thereby ensuring the operating stability of the integrated electric servo.

[0045] Further, in a preferred embodiment of the present application, the two ends of the transition gear 13 along the second direction are rotatably connected to the side wall surfaces of the main body 2 and the side wall surfaces of the shell 8 respectively. Further preferably, a rotating bearing is arranged between the two ends of the transition gear 13 along the second direction and the side wall surfaces of the main body 2 and the side wall surfaces of the shell 8 respectively.

[0046] Further preferably, in the preferred embodiment of the present application, the two ends of the double gear 10 along the second direction are rotatably connected to the side wall surface of the main body 2 and the side wall surface of the shell 8 respectively. Further preferably, a rotating bearing is arranged between the two ends of the double gear 10 along the second direction and the side wall surface of the main body 2 and the side wall surface of the shell 8 respectively.

[0047] Furthermore, in a preferred embodiment of the present application, the integrated electric servo also includes a control mechanism, which includes a drive plate 11 and a drive module 12. The drive plate 11 is fixedly mounted on one side of the body 2, and correspondingly, the drive module 12 is fixedly mounted on the drive plate 11, for controlling the stable operation of the entire integrated electric servo.

[0048] Further preferably, in the preferred embodiment of the present application, a receiving chamber is provided on the side of the housing 8 facing away from the body 2, and the drive board 11 and the drive module 12 are both fixedly installed in the receiving chamber. Preferably, a cover plate 14 is detachably fixed at one end of the receiving chamber facing away from the body 2, so as to facilitate the installation of the drive board 11 and the drive module 12 in the receiving chamber.

[0049] Furthermore, in a preferred embodiment of the present application, at least one position sensor 7 is provided between the lead screw nut 19 and the inner wall surface of the accommodating space, for detecting the position of the lead screw nut 19 in real time, thereby realizing closed-loop control of the electric servo. Preferably, a mounting hole penetrating the side wall surface of the main body 2 along the third direction is provided, and the position sensor 7 is fixedly installed in the mounting hole. Further preferably, the detection end of the position sensor 7 abuts against the end surface of the lead screw nut 19. Further preferably, the mounting hole is eccentrically arranged relative to the central axis of the driving lead screw 4 to reduce the size of the main body 2 in the first direction, so that the servo can adapt to the installation of the special-shaped space of the asymmetric compartment. Further preferably, the position sensor 7 is communicatively connected or electrically connected to the drive plate 11 and / or the drive module 12.

[0050] The integrated electric servo in the present invention has a small volume, high integration, and high power density. It uses a driving screw 4 and a screw nut 19 to slide and push the sliding groove 303 on the U-shaped bracket, so that the rocker output shaft 3 can rotate around the axis with the movement of the U-shaped bracket, thereby ensuring that the rocker output shaft 3 can stably output the rotation. At the same time, through the first limiter arranged on the side wall of the body 2 and the inner bearing groove 301 arranged at the end of the rocker output shaft 3, the rocker output shaft 3 is connected to the inner bearing of the body 2, thereby significantly reducing the size of the electric servo along the first direction. In addition, by providing a trapezoidal-shaped clearance groove 21 on the side wall of the rocker output shaft 3, the structural strength of the rocker output shaft 3 toward the end of the first limiter is improved, and the driving screw 4 can also be rotated during the movement. The size of the body 2 in the third direction is further reduced, and the volume of the entire electric servo is further reduced to meet the asymmetric installation requirements of the servo in irregular compartments, and has good promotion prospects and application value.

[0051] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated electric servo, characterized in that: include: A body, wherein a receiving space is provided in the body, wherein the receiving space is provided with a first through hole and a first stopper arranged at intervals along a first direction, and two second stoppers arranged at intervals along a second direction; the projections of the first direction and the second direction along a third direction are perpendicular to each other; and the first through hole communicates with the receiving space and the outside of the body; A rocker arm output mechanism, the rocker arm output mechanism comprising a rocker arm output shaft extending in a first direction, one end of the rocker arm output shaft being rotatably disposed on the first limit member, the other end of the rocker arm output shaft extending out of the first through hole, and a side wall surface of the rocker arm output shaft being rotatably matched with the first through hole; A U-shaped bracket is arranged on the outer wall surface of the rocker arm output shaft, two arms of the U-shaped bracket are arranged at intervals along the first direction, and a sliding groove is arranged opposite to each other between the two arms; A driving mechanism, the driving mechanism comprising a driving lead screw arranged between the two second position-limiting members, a lead screw nut moving along the second direction being arranged on the driving lead screw, and the lead screw nut being slidably embedded in the sliding groove; The lead screw nut is configured as follows: the driving lead screw rotates to drive the lead screw nut to move along the second direction, and the lead screw nut slides relative to the sliding groove to push the U-shaped bracket and the rocker arm output shaft to rotate.

2. The integrated electric servo according to claim 1, wherein: A rotating column is arranged on one side of the lead screw nut embedded in the sliding groove. The rotating column is rotatably embedded in the rotating hole of the square slider, and the square slider is slidably embedded in the sliding groove.

3. The integrated electric steering gear according to claim 1, wherein: An inner bearing groove is arranged at the end of the rocker arm output shaft, and the inner bearing groove is sleeved on the outer side of the first limit member, and a second bearing is arranged between the inner bearing groove and the first limit member for rotational connection between the rocker arm output shaft and the first limit member.

4. The integrated electric steering gear according to claim 3, wherein: A flange is provided at a position on the outer side of the body corresponding to the first through hole, the flange is detachably fixed to the outer side of the body, and a first bearing groove is provided on the inner wall surface of the flange facing the rocker arm output shaft; A shaft shoulder is arranged on the outer wall surface of the rocker arm output shaft facing the first through hole, and a first bearing is arranged between the shaft shoulder and the first bearing groove for rotating the rocker arm output shaft.

5. The integrated electric steering gear according to claim 4, wherein: A clearance groove with a trapezoidal cross-section is provided on the side wall surface of the rocker arm output shaft between the shaft shoulder and the inner bearing groove, which is used for the rotation clearance of the driving screw after passing through the U-shaped bracket.

6. The integrated electric steering gear according to any one of claims 1 to 5, wherein: The second limit member is two second through holes opened on the side wall of the main body, and the two ends of the driving screw are rotatably connected in the second through holes respectively; and a screw input end is provided at at least one end of the driving screw, and the screw input end extends out of the second through hole.

7. The integrated electric steering gear according to claim 6, wherein: The driving mechanism also includes a driving motor and a reduction assembly; The drive motor is arranged outside the body, and the motor output end of the drive motor is parallel to the screw input end; the reduction assembly is arranged between the motor output end and the screw input end, and is used for reduction transmission between the drive motor and the drive screw.

8. The integrated electric steering gear according to claim 7, wherein: A housing is provided on one side of the body where the reduction assembly is provided, and is used to form a reduction space outside the body to accommodate the reduction assembly.

9. The integrated electric steering gear according to any one of claims 1 to 5, 7 and 8, wherein: At least one position sensor is arranged between the lead screw nut and the inner wall surface of the accommodating space, for detecting the moving position of the lead screw nut in real time.

10. The integrated electric steering gear according to any one of claims 1 to 5, 7 and 8, wherein: It also includes a control mechanism, which includes a driving plate and a driving module. The driving plate is fixed on one side of the body, and the driving module is fixedly mounted on the driving plate.

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