Steering gear power-assisted mechanism and vehicle

Abstract

The utility model discloses a steering gear power-assisted mechanism and a vehicle, the steering gear power-assisted mechanism comprises a motor sub-assembly, the motor sub-assembly comprises a motor body and a first belt wheel, the motor body is provided with a motor shaft, and the first belt wheel is sleeved outside the motor shaft; a mounting cavity is formed in the shell assembly, a ball screw is arranged in the mounting cavity, the ball screw is sleeved with a second belt wheel, and the first belt wheel and the second belt wheel are connected through a belt; wherein the shell assembly is provided with a connecting hole and a mounting hole, the motor shaft penetrates through the mounting hole to extend into the mounting cavity, the connecting hole is used for allowing a connecting piece connected with the motor body to penetrate through, and the connecting piece can move in the connecting hole so that the distance between the connecting piece and the second belt wheel can be adjusted; the motor shaft can move in the mounting hole so that the distance between the motor shaft and the second belt wheel can be adjusted. According to the steering gear power-assisted mechanism, the tensioning force of the belt can be adjusted, the occupied space of the steering gear power-assisted mechanism can be reduced, and the steering gear power-assisted mechanism can be arranged on a vehicle conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to a steering gear power-assisting mechanism and a vehicle with the steering gear power-assisting mechanism. Background Art

[0002] In the existing automobile electric steering gear, due to the limitations of product manufacturing accuracy, assembly errors and other factors, it is necessary to adjust the center distance of the large and small pulleys to achieve the appropriate belt tension. In the prior art, the method for adjusting the center distance of the large and small pulleys is: a rotating stop is set on the motor, the motor axis and the rotating stop are eccentrically set, and the motor shaft is offset by rotating the rotating stop on the motor, so that the center distance of the large and small pulleys is changed, and the belt tension is adjusted. Since this method requires a rotating motor, a mounting interface with a larger outer diameter needs to be set on the housing, resulting in a larger installation space required for the steering gear, which is not conducive to the installation on the vehicle, and there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a steering gear assist mechanism, which can adjust the tension of the belt, has a relatively simple overall structure, and can reduce the space occupied by the steering gear assist mechanism, that is, reduce the space occupied by the steering gear, which is convenient for installation on the vehicle.

[0004] According to the steering assist mechanism of the embodiment of the utility model, it includes: a motor sub-assembly, the motor sub-assembly includes a motor body and a first pulley, the motor body is provided with a motor shaft, and the first pulley is sleeved outside the motor shaft; a shell component, a mounting cavity is formed in the shell component, a ball screw is provided in the mounting cavity, a second pulley is provided outside the ball screw, and the first pulley is connected to the second pulley by a belt; wherein the shell component is provided with a connecting hole and a mounting hole, the motor shaft passes through the mounting hole to extend into the mounting cavity, the connecting hole is used to penetrate a connecting piece connected to the motor body, the connecting piece is movable in the connecting hole so that the distance of the connecting piece relative to the second pulley is adjustable, and the motor shaft is movable in the mounting hole so that the distance of the motor shaft relative to the second pulley is adjustable.

[0005] According to the steering assist mechanism of the embodiment of the utility model, the connecting piece and the motor shaft can be moved in the connecting hole and the mounting hole respectively to realize the displacement of the motor shaft, and then the tension of the belt can be adjusted. The overall structure is relatively simple and the space occupied by the steering assist mechanism can be reduced, that is, the space occupied by the steering gear can be reduced, which is beneficial to the installation on the vehicle.

[0006] According to the steering gear power assist mechanism of the embodiment of the utility model, the connecting hole and the mounting hole are both configured as waist-shaped holes, and the waist-shaped holes are extended along the distribution direction of the first pulley and the second pulley.

[0007] According to some embodiments of the steering assist mechanism of the present invention, the housing assembly includes a main housing and a sub-housing, the main housing and the sub-housing jointly define the mounting cavity, the connecting hole and the mounting hole are both arranged in the main housing; the connecting hole includes a first connecting hole and a second connecting hole, the connecting member includes a first connecting member and a second connecting member, the first connecting member is passed through the first connecting hole and connects the main housing with the motor body, the second connecting member is passed through the second connecting hole and connects the sub-housing, the main housing and the motor body.

[0008] According to the steering gear power assist mechanism of some embodiments of the present invention, the motor body and the auxiliary housing are connected to two sides of the main housing.

[0009] According to the steering assist mechanism of some embodiments of the present invention, there are at least two first connecting holes, and at least two of the first connecting holes are respectively located on both sides of the mounting hole; and / or, there are at least two second connecting holes, and at least two of the second connecting holes are respectively located on both sides of the mounting hole.

[0010] According to the steering assist mechanism of some embodiments of the present invention, among the plurality of first connecting holes and the plurality of second connecting holes, the distribution direction of the first connecting holes and the second connecting holes located on the same side of the mounting hole is the same as the distribution direction of the first pulley and the second pulley.

[0011] According to the steering gear power assist mechanism of some embodiments of the present invention, the number of the second connecting holes is greater than the number of the first connecting holes.

[0012] According to the steering gear power assist mechanism of some embodiments of the present invention, the number of the second connecting holes is three, and the three second connecting holes are distributed around the mounting hole in a triangular shape.

[0013] According to the steering gear power assist mechanism of some embodiments of the present invention, the motor body is provided with a plug-in boss located outside the motor shaft, and the plug-in boss is plugged into the mounting hole and is movable along the length direction of the mounting hole.

[0014] The utility model also provides a vehicle.

[0015] The vehicle according to the embodiment of the utility model is provided with any one of the above-mentioned steering gear power-assisting mechanisms.

[0016] The advantages of the vehicle and the above-mentioned steering gear assist mechanism over the prior art are the same and will not be elaborated here.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a partial cross-sectional view of a steering gear assist mechanism according to an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the assembly of the steering gear power-assisting mechanism according to an embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of a motor subassembly of a steering gear power-assisting mechanism according to an embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the main housing of the steering gear power-assisting mechanism according to an embodiment of the utility model.

[0023] Reference numerals:

[0024] Steering gear assist mechanism 100,

[0025] Motor sub-assembly 1, motor body 11, motor shaft 111, plug-in boss 112, threaded hole 113, first pulley 12, belt 13, housing assembly 2, main housing 21, auxiliary housing 22, mounting cavity 23, ball screw 24, tolerance ring 241, second pulley 25, connecting hole 26, first connecting hole 261, second connecting hole 262, mounting hole 27, connecting piece 28, first connecting piece 281, second connecting piece 282. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present utility model, it is necessary to understand 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 positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Unless otherwise specified, the front-to-back direction in the present application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0030] Reference below Figure 1-Figure 4 The steering assist mechanism 100 according to the embodiment of the utility model is described. By making the connecting member 28 and the motor shaft 111 movable in the connecting hole 26 and the mounting hole 27 respectively, the motor shaft 111 can be offset, and the tension of the belt 13 can be adjusted. The overall structure is relatively simple, and the space occupied by the steering assist mechanism 100 can be reduced, that is, the space occupied by the steering gear can be reduced, which is beneficial to the installation on the vehicle.

[0031] like Figure 1-Figure 4 As shown, a steering gear assist mechanism 100 according to an embodiment of the utility model includes: a motor subassembly 1 and a housing assembly 2 .

[0032] The motor sub-assembly 1 includes a motor body 11 and a first pulley 12 . The motor body 11 is provided with a motor shaft 111 , and the first pulley 12 is sleeved outside the motor shaft 111 .

[0033] Specifically, the motor body 11 is used to provide driving force, and a motor shaft 111 is provided on the motor body 11, that is, the motor body 11 can output power through the motor shaft 111. At the same time, the first pulley 12 is sleeved outside the motor shaft 111, and the motor body 11 and the first pulley 12 can be connected through the motor shaft 111, and then the driving force of the motor body 11 can be transmitted to the first pulley 12, driving the first pulley 12 to rotate.

[0034] An installation cavity 23 is formed in the housing assembly 2 , a ball screw 24 is arranged in the installation cavity 23 , a second pulley 25 is arranged on the outer sleeve of the ball screw 24 , and the first pulley 12 is connected to the second pulley 25 via a belt 13 .

[0035] Specifically, the housing assembly 2 is used to provide an installation position for the components in the steering gear assist mechanism 100, so that an installation cavity 23 is formed in the housing assembly 2, and the components in the steering gear assist mechanism 100 can be arranged in the installation cavity 23 to achieve the installation of these components. At the same time, the ball screw 24 is arranged in the installation cavity 23 to achieve the installation of the ball screw 24, and a second pulley 25 is provided on the outer sleeve of the ball screw 24, and the second pulley 25 can also be arranged in the installation cavity 23 to achieve the installation of the second pulley 25, and power can be transmitted between the ball screw 24 and the second pulley 25, that is, power can be transmitted from the ball screw 24 to the second pulley 25, or from the second pulley 25 to the ball screw 24.

[0036] It should be noted that, Figure 1 As shown, a tolerance ring 241 is also provided between the second pulley 25 and the ball screw 24. The tolerance ring 241 can be used to eliminate the gap generated during the manufacturing and transfer process of the ball screw 24, thereby improving the transmission accuracy and reducing the vibration of the ball screw 24 during the movement, making the movement smoother.

[0037] Furthermore, the first pulley 12 and the second pulley 25 are connected by the belt 13, and the first pulley 12 and the second pulley 25 are arranged in parallel, so that the first pulley 12 and the second pulley 25 can transmit power through the belt 13, that is, the power can be transmitted from the first pulley 12 to the second pulley 25, or from the second pulley 25 to the first pulley 12, and the first pulley 12 is connected to the motor shaft 111 by power, and the power of the motor body 11 can be transmitted to the second pulley 25 through the first pulley 12, and then transmitted from the second pulley 25 to the ball screw 24, so as to output power through the ball screw 24.

[0038] Among them, the shell assembly 2 is provided with a connecting hole 26 and a mounting hole 27. The motor shaft 111 passes through the mounting hole 27 to extend into the mounting cavity 23. The connecting hole 26 is used to penetrate a connecting piece 28 connected to the motor body 11. The connecting piece 28 is movable in the connecting hole 26 so that the distance between the connecting piece 28 and the second pulley 25 can be adjusted. The motor shaft 111 is movable in the mounting hole 27 so that the distance between the motor shaft 111 and the second pulley 25 can be adjusted.

[0039] Specifically, a connecting hole 26 and a mounting hole 27 are provided on the shell assembly 2. The mounting hole 27 is used to cooperate with the motor shaft 111. The motor shaft 111 can be extended into the mounting cavity 23 from the outside of the mounting cavity 23 through the mounting hole 27 to achieve the cooperation between the motor shaft 111 and the mounting hole 27. The first pulley 12 sleeved on the outside of the motor shaft 111 can be located in the mounting cavity 23 and arranged parallel to the second pulley 25 in the mounting cavity 23, and connected through the belt 13. At the same time, the connecting hole 26 is used to pass a connecting piece 28 connected to the motor body 11. Even if the connecting piece 28 can be connected to the motor body 11 through the connecting hole 26, the motor body 11 can be connected to the shell assembly 2 through the cooperation between the connecting piece 28 and the connecting hole 26.

[0040] Furthermore, the motor shaft 111 is movable in the mounting hole 27, that is, the motor shaft 111 is movable relative to the housing assembly 2, so that the distance between the motor shaft 111 and the second pulley 25 can be adjusted to achieve the offset of the motor shaft 111, and the first pulley 12 is sleeved on the motor shaft 111, so that the distance between the first pulley 12 and the second pulley 25 can be adjusted by the movement of the motor shaft 111 in the mounting hole 27, so that the tension of the belt 13 can be adjusted. At the same time, the connecting member 28 is movable in the connecting hole 26, that is, the connecting member 28 is movable relative to the housing assembly 2, so that the distance between the connecting member 28 and the second pulley 25 can be adjusted, and the distance between the motor body 11 and the second pulley 25 can be adjusted, thereby improving the reliability of the offset of the motor shaft 111, and thus improving the reliability of adjusting the tension of the belt 13.

[0041] That is to say, the motor shaft 111 can be offset by the movement of the connecting member 28 and the motor shaft 111 in the connecting hole 26 and the mounting hole 27 respectively, thereby adjusting the tension of the belt 13, and there is no need to rotate the motor body 11, that is, there is no need to provide a mounting interface with a larger outer diameter for cooperating with the motor body 11 on the housing assembly 2, which can effectively reduce the space occupied by the steering assist mechanism 100, and thus reduce the space occupied by the steering gear, which is beneficial to the installation on the vehicle.

[0042] It should be noted that the diameter of the connecting hole 26 can be larger than the outer diameter of the connecting member 28 to improve the reliability of the connecting member 28 moving in the connecting hole 26, and the diameter of the mounting hole 27 can be larger than the outer diameter of the motor shaft 111 to improve the reliability of the motor shaft 111 moving in the mounting hole 27, and, as Figure 3 As shown, the connecting member 28 can be a bolt, and a threaded hole 113 can be set on the motor body 11 to achieve connection between the bolt and the motor body 11 through the cooperation between the bolt and the threaded hole 113, and the threaded hole 113 can be made to face the connecting hole 26, so that the connecting member 28 can pass through the connecting hole 26 and achieve connection with the threaded hole 113.

[0043] Therefore, by forming an installation cavity 23 in the housing assembly 2 to install the components in the steering gear power assist mechanism 100, and connecting the motor body 11 to the housing assembly 2 through the connecting piece 28, the installation of the motor body 11 can be achieved. At the same time, a first pulley 12 is provided on the outer sleeve of the motor shaft 111, a ball screw 24 is provided in the installation cavity 23, a second pulley 25 is provided on the outer sleeve of the ball screw 24, and the first pulley 12 and the second pulley 25 are connected by a belt 13, so that the power of the motor body 11 can be transmitted to the ball screw 24, and the power is output through the ball screw 24, and the connecting piece 28 can be movable in the connecting hole 26, and the motor shaft 111 can be movable in the mounting hole 27, so as to realize the offset of the motor shaft 111.

[0044] According to the steering assist mechanism 100 of the embodiment of the utility model, the connecting member 28 and the motor shaft 111 can be moved in the connecting hole 26 and the mounting hole 27 respectively to realize the displacement of the motor shaft 111, and then the tension of the belt 13 can be adjusted. The overall structure is relatively simple and the space occupied by the steering assist mechanism 100 can be reduced, that is, the space occupied by the steering gear can be reduced, which is beneficial to the installation on the vehicle.

[0045] In some embodiments, the connecting hole 26 and the mounting hole 27 are both configured as waist-shaped holes, and the waist-shaped holes are extended along the distribution direction of the first pulley 12 and the second pulley 25 .

[0046] Specifically, the connecting hole 26 is constructed as a waist-shaped hole, so that even if the connecting member 28 can move in the connecting hole 26, even if the motor body 11 can move relative to the housing assembly 2, the motor shaft 111 can be driven to move relative to the housing assembly 2, and the mounting hole 27 is also constructed as a waist-shaped hole, so that the mounting hole 27 can leave enough movement space for the motor shaft 111 to ensure that the motor shaft 111 can move relative to the housing assembly 2 and realize the displacement of the motor shaft 111, wherein the extension direction of the connecting hole 26 and the mounting hole 27 can be the same to ensure the reliability of the displacement of the motor shaft 111.

[0047] Furthermore, the waist-shaped hole is extended along the distribution direction of the first pulley 12 and the second pulley 25, so that the motor shaft 111 can move along the distribution direction of the first pulley 12 and the second pulley 25, and drive the first pulley 12 to move, so that the center distance between the first pulley 12 and the second pulley 25 changes, thereby realizing the adjustment of the tension of the belt 13.

[0048] In some embodiments, the housing assembly 2 includes a main housing 21 and a secondary housing 22 . The main housing 21 and the secondary housing 22 together define a mounting cavity 23 . The connecting hole 26 and the mounting hole 27 are both provided in the main housing 21 .

[0049] Specifically, the housing assembly 2 includes a main housing 21 and a sub-housing 22, so that the components in the steering assist mechanism 100 can be installed through the main housing 21 and the sub-housing 22, and the main housing 21 and the sub-housing 22 jointly define a mounting cavity 23 for accommodating the components in the steering assist mechanism 100, and the connecting hole 26 and the mounting hole 27 are both arranged on the main housing 21, which can facilitate the assembly of the steering assist mechanism 100, avoid frequent movement of the user, and help improve the convenience of assembly.

[0050] The connecting hole 26 includes a first connecting hole 261 and a second connecting hole 262, and the connecting member 28 includes a first connecting member 281 and a second connecting member 282. The first connecting member 281 is passed through the first connecting hole 261 and connects the main shell 21 with the motor body 11, and the second connecting member 282 is passed through the second connecting hole 262 and connects the auxiliary shell 22, the main shell 21 and the motor body 11.

[0051] Specifically, the first connecting hole 261 and the second connecting hole 262 can both be used to achieve connection between components, and the first connecting piece 281 and the second connecting piece 282 can respectively cooperate with the first connecting hole 261 and the second connecting hole 262 to connect the components, so that the first connecting piece 281 can be inserted into the first connecting hole 261, even if the first connecting piece 281 can pass through the first connecting hole 261 to be connected to the motor body 11, the connection between the main shell 21 and the motor body 11 is achieved, and the second connecting piece 282 can be inserted into the second connecting hole 262, even if the second connecting piece 282 can pass through the second connecting hole 262 to be connected to the motor body 11, the connection between the main shell 21, the auxiliary shell 22 and the motor body 11 is achieved, that is, the first connecting piece 281 and the second connecting piece 282 can both achieve the connection between the motor body 11 and the shell assembly 2, and the connection reliability between the two can be improved.

[0052] When connecting the main shell 21, the auxiliary shell 22 and the motor body 11, the auxiliary shell 22 can be connected to the main shell 21 first, and then the second connecting member 282 can be connected to the motor body 11 through the second connecting hole 262 to realize the connection between the main shell 21, the auxiliary shell 22 and the motor body 11.

[0053] In some embodiments, the motor body 11 and the auxiliary housing 22 are connected to two sides of the main housing 21 .

[0054] That is to say, Figure 2 As shown, the main housing 21 is located between the motor body 11 and the auxiliary housing 22, that is, the auxiliary housing 22, the main housing 21 and the motor body 11 are arranged in sequence, which can avoid interference between the housing assembly 2 and the motor body 11, resulting in the motor shaft 111 being unable to deviate, and when the auxiliary housing 22, the main housing 21 and the motor body 11 are connected by the second connecting member 282, the second connecting member 282 can pass through the auxiliary housing 22, the main housing 21 and the motor body 11 in sequence to realize the connection between the auxiliary housing 22, the main housing 21 and the motor body 11.

[0055] In some embodiments, there are at least two first connection holes 261 , and the at least two first connection holes 261 are respectively located on two sides of the mounting hole 27 .

[0056] Specifically, the first connecting hole 261 can be used to penetrate the first connecting member 281 to achieve the connection between the main shell 21 and the motor body 11. The number of the first connecting holes 261 can be at least two, that is, two, three or more, to improve the connection reliability between the main shell 21 and the motor body 11, and at least two first connecting holes 261 are respectively arranged on both sides of the mounting hole 27, that is, the at least two first connecting holes 261 are spaced apart, which can improve the connection stability between the main shell 21 and the motor body 11.

[0057] Furthermore, the number of first connecting members 281 can be the same as the number of first connecting holes 261, and the first connecting members 281 and the first connecting holes 261 correspond one-to-one, that is, for each first connecting hole 261, a first connecting member 281 is provided to cooperate with it to connect the main housing 21 with the motor body 11.

[0058] And / or, there are at least two second connection holes 262 , and the at least two second connection holes 262 are respectively located on two sides of the mounting hole 27 .

[0059] Specifically, the second connecting hole 262 can be used to penetrate the second connecting member 282 to achieve the connection between the sub-shell 22, the main shell 21 and the motor body 11. The number of the second connecting holes 262 can be at least two, that is, two, three or more, to improve the connection reliability between the sub-shell 22, the main shell 21 and the motor body 11, and at least two second connecting holes 262 are respectively arranged on both sides of the mounting hole 27, that is, the at least two second connecting holes 262 are spaced apart, which can improve the connection stability between the sub-shell 22, the main shell 21 and the motor body 11.

[0060] Furthermore, the number of second connecting members 282 can be the same as the number of second connecting holes 262, and the second connecting members 282 and the second connecting holes 262 can correspond one to one, that is, for each second connecting hole 262, a second connecting member 282 is provided to cooperate with it to connect the sub-shell 22, the main shell 21 and the motor body 11.

[0061] In some embodiments, among the plurality of first connection holes 261 and the plurality of second connection holes 262 , the distribution direction of the first connection holes 261 and the second connection holes 262 located on the same side of the mounting hole 27 is the same as the distribution direction of the first pulley 12 and the second pulley 25 .

[0062] Specifically, Figure 2 and Figure 4 As shown, the distribution direction of the first connecting hole 261 and the second connecting hole 262 located on the same side of the mounting hole 27 is set to be the same as the distribution direction of the first pulley 12 and the second pulley 25, that is, the first connecting hole 261 and the second connecting hole 262 are set parallel to the center line of the first pulley 12 and the second pulley 25, that is, they are set along the length direction of the shell assembly 2, so as to improve the connection reliability between the shell assembly 2 and the motor body 11.

[0063] In some embodiments, the number of the second connection holes 262 is greater than the number of the first connection holes 261 .

[0064] Specifically, the second connecting hole 262 is used to realize the connection between the sub-shell 22, the main shell 21 and the motor body 11, and the first connecting hole 261 is used to realize the connection between the main shell 21 and the motor body 11. By making the number of the second connecting holes 262 greater than the number of the first connecting holes 261, the number of the second connecting parts 282 used to realize the connection between the sub-shell 22, the main shell 21 and the motor body 11 can be increased, which can effectively improve the reliability of connecting the sub-shell 22, the main shell 21 and the motor body 11.

[0065] In some specific embodiments, Figure 2As shown, the length of the second connecting member 282 is greater than the length of the first connecting member 281. The second connecting member 282 is used to achieve the connection between the auxiliary housing 22, the main housing 21 and the motor body 11, and the first connecting member 281 is used to achieve the connection between the main housing 21 and the motor body 11, that is, the connection length of the second connecting member 282 is greater than the connection length of the first connecting member 281. The length of the second connecting member 282 is greater than the length of the first connecting member 281, which can reduce the stress concentration caused by insufficient length and improve the reliability of connecting the auxiliary housing 22, the main housing 21 and the motor body 11 through the second connecting member 282.

[0066] In some embodiments, there are three second connection holes 262 , and the three second connection holes 262 are distributed around the mounting hole 27 in a triangle shape.

[0067] Specifically, the number of the second connecting holes 262 is three, that is, the number of the second connecting members 282 is also three. The sub-shell 22, the main shell 21 and the motor body 11 can be connected through the cooperation between the three second connecting holes 262 and the three second connecting members 282, and the connection reliability among the three can be effectively improved. At the same time, the three second connecting holes 262 are distributed in a triangular shape around the mounting hole 27. This layout can provide structural stability and make the force uniform. By arranging the three second connecting holes 262 in a triangle, it can be ensured that the second connecting member 282 can evenly withstand forces from different directions during installation, thereby reducing local stress concentration and improving the reliability and stability of the overall structure.

[0068] Also, it should be noted that there are three second connection holes 262, and the number of the second connection holes 262 is greater than the number of the first connection holes 261, and there are at least two first connection holes 261, that is, the number of first connection holes 261 is two, that is, the number of first connection members 281 is two, and the main housing 21 and the motor body 11 can be connected through the cooperation between the two first connection holes 261 and the two first connection members 281, and the connection reliability between the two can be improved.

[0069] In some embodiments, the motor body 11 is provided with an inserting boss 112 located outside the motor shaft 111 . The inserting boss 112 is inserted into the mounting hole 27 and is movable along the length direction of the mounting hole 27 .

[0070] That is to say, the plug-in boss 112 arranged outside the motor shaft 111 can be plugged into the mounting hole 27 on the shell assembly 2 to cooperate with the mounting hole 27. The plug-in boss 112 can be arranged on the side of the motor body 11 facing the shell assembly 2 and extend toward the side where the shell assembly 2 is located, so as to facilitate the plug-in boss 112 to be plugged into the mounting hole 27. At the same time, the mounting hole 27 is constructed as a waist-shaped hole, so that the plug-in boss 112 can move in the mounting hole 27 along the length direction of the mounting hole 27 to achieve the offset of the motor shaft 111, and then the tensioning force of the belt 13 can be adjusted, that is, the plug-in boss 112 can be used to guide the offset of the motor shaft 111 to improve the accuracy of the offset direction of the motor shaft 111.

[0071] It should be noted that the plug-in boss 112 is arranged outside the motor shaft 111, and the first pulley 12 is also sleeved outside the motor shaft 111, so that the plug-in boss 112 and the first pulley 12 can be spaced apart on the outside of the motor shaft 111 along the length direction of the motor shaft 111 to avoid interference between the two, which will cause the plug-in boss 112 to be unable to move or the belt 13 to be unable to connect with the first pulley 12.

[0072] The utility model also provides a vehicle.

[0073] The vehicle according to the embodiment of the utility model is provided with any one of the above-mentioned steering gear assist mechanism 100. By making the connecting member 28 and the motor shaft 111 movable in the connecting hole 26 and the mounting hole 27 respectively, the motor shaft 111 can be offset, and then the tension of the belt 13 can be adjusted. The overall structure is relatively simple, and the space occupied by the steering gear assist mechanism 100 can be reduced, that is, the space occupied by the steering gear can be reduced, which is conducive to the installation on the vehicle.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0075] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 claims and their equivalents.

Claims

1. A steering gear assist mechanism, characterized in that: include: A motor sub-assembly, the motor sub-assembly comprising a motor body and a first pulley, the motor body is provided with a motor shaft, and the first pulley is sleeved outside the motor shaft; A housing assembly, wherein a mounting cavity is formed in the housing assembly, a ball screw is disposed in the mounting cavity, a second pulley is disposed on an outer sleeve of the ball screw, and the first pulley is connected to the second pulley via a belt; In which, the shell assembly is provided with a connecting hole and a mounting hole, the motor shaft passes through the mounting hole to extend into the mounting cavity, the connecting hole is used to penetrate a connecting piece connected to the motor body, the connecting piece is movable in the connecting hole so that the distance of the connecting piece relative to the second pulley is adjustable, and the motor shaft is movable in the mounting hole so that the distance of the motor shaft relative to the second pulley is adjustable.

2. The steering gear assist mechanism according to claim 1, characterized in that: The connecting hole and the mounting hole are both configured as waist-shaped holes, and the waist-shaped holes are extended along the distribution direction of the first pulley and the second pulley.

3. The steering gear assist mechanism according to claim 2, characterized in that: The housing assembly comprises a main housing and a secondary housing, wherein the main housing and the secondary housing together define the mounting cavity, and the connecting hole and the mounting hole are both provided in the main housing; The connecting hole includes a first connecting hole and a second connecting hole, and the connecting member includes a first connecting member and a second connecting member. The first connecting member is passed through the first connecting hole and connects the main shell with the motor body, and the second connecting member is passed through the second connecting hole and connects the auxiliary shell, the main shell and the motor body.

4. The steering gear assist mechanism according to claim 3, characterized in that: The motor body and the auxiliary housing are connected to two sides of the main housing.

5. The steering gear assist mechanism according to claim 4, characterized in that: There are at least two first connection holes, and the at least two first connection holes are respectively located on both sides of the mounting hole; And / or, there are at least two second connection holes, and at least two of the second connection holes are respectively located on both sides of the mounting hole.

6. The steering gear assist mechanism according to claim 5, characterized in that: Among the plurality of the first connection holes and the plurality of the second connection holes, a distribution direction of the first connection holes and the second connection holes located on the same side of the mounting hole is the same as a distribution direction of the first pulley and the second pulley.

7. The steering gear assist mechanism according to claim 3, characterized in that: The number of the second connection holes is greater than the number of the first connection holes.

8. The steering gear assist mechanism according to claim 3, characterized in that: There are three second connection holes, and the three second connection holes are distributed around the mounting hole in a triangle shape.

9. The steering gear assist mechanism according to claim 1, characterized in that: The motor body is provided with an inserting boss located outside the motor shaft, and the inserting boss is inserted into the mounting hole and is movable along the length direction of the mounting hole.

10. A vehicle, characterized in that: A steering gear assist mechanism according to any one of claims 1 to 9 is provided.

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