Steering gear input structure and vehicle

Abstract

The utility model discloses a steering gear input structure and a vehicle, the steering gear input structure comprises an input shaft universal joint and an input shaft spline shaft, the input shaft universal joint is provided with a connecting groove, and the connecting groove is provided with a penetrating opening; one of the inner peripheral wall of the connecting groove and the outer peripheral wall of the input shaft spline shaft comprises a smooth section and a spline section which are sequentially connected in the axial direction, and the other one of the inner peripheral wall of the connecting groove and the outer peripheral wall of the input shaft spline shaft is a spline wall face. When the spline shaft of the input shaft extends into the connecting groove, the spline wall surface sequentially passes through the smooth section and the spline section to be matched with the spline section key groove; the input shaft universal joint is further provided with a fixing hole communicated with the connecting groove, and a fastener is arranged in the fixing hole in a penetrating mode. According to the steering gear input structure, the input shaft universal joint can drive the input shaft spline shaft to rotate, the smooth section is arranged so that the accuracy of the installation position of the input shaft spline shaft can be guaranteed, and the input shaft spline shaft is prevented from being disengaged from the input shaft universal joint when a vehicle vibrates.

Description

Technical Field

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

[0002] In the prior art, the entire male end of the steering gear input shaft is covered with spline structures, and the meshing relationship is formed when the male end of the steering gear input shaft just penetrates into the female end of the steering gear input shaft. If the screw is directly inserted at this time when the top end of the male end of the steering gear input shaft has not reached the transverse screw hole of the female end of the steering gear input shaft, the steering function of the vehicle can still be used normally at this time, but this state is a failed assembly state with huge potential safety hazards. When the vehicle is driving on a bumpy road section, since the female end of the steering gear input shaft does not lock the male end, the male end of the steering gear input shaft is likely to come out of the female end. Once the male end comes out of the female end, the steering function will be lost instantly, causing the vehicle to lose the steering function, and there is room for improvement. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a steering gear input structure, which can realize the control of the wheels through the steering wheel, enable the input shaft universal joint to drive the input shaft spline shaft to rotate, and ensure the accuracy of the installation position of the input shaft spline shaft, so as to prevent the input shaft spline shaft from coming out of the input shaft universal joint when the vehicle vibrates, and avoid the loss of the steering function of the vehicle.

[0004] The steering gear input structure according to an embodiment of the utility model includes: an input shaft universal joint and an input shaft spline shaft. The input shaft universal joint is formed with a connection groove, and the connection groove is formed with an insertion opening. Wherein, one of the inner peripheral wall of the connection groove and the outer peripheral wall of the input shaft spline shaft includes a smooth section and a spline section connected in sequence along the axial direction, and the other of the inner peripheral wall of the connection groove and the outer peripheral wall of the input shaft spline shaft is constructed as a spline wall surface, so that when the input shaft spline shaft extends into the connection groove, the spline wall surface sequentially passes through the smooth section and the spline section to cooperate with the spline key grooves of the spline section; the input shaft universal joint is further provided with a fixing hole communicated with the connection groove, and the fixing hole is used for inserting a fastener.

[0005] According to the steering gear input structure of the embodiment of the present utility model, the control of the steering wheel over the wheels can be realized through the input shaft universal joint and the input shaft spline shaft. The input shaft universal joint can drive the input shaft spline shaft to rotate through the cooperation between the connecting groove and the spline section. The reliability of the rotation of the input shaft spline shaft driven by the input shaft universal joint can be improved through the cooperation between the fastener and the fixing hole. And by providing the smooth section, the accuracy of the installation position of the input shaft spline shaft can be ensured, preventing the input shaft spline shaft from disengaging from the input shaft universal joint when the vehicle vibrates and causing the vehicle to lose its steering function.

[0006] According to the steering gear input structure of some embodiments of the present utility model, the axial length of the smooth section is greater than the distance between the insertion opening and the fixing hole.

[0007] According to the steering gear input structure of some embodiments of the present utility model, the outer peripheral wall of the input shaft spline shaft is provided with a mating notch, and the fastener is adapted to extend from the fixing hole to the connecting groove to perform axial limiting at the mating notch.

[0008] According to the steering gear input structure of some embodiments of the present utility model, the distance from the mating notch to the end of the spline section close to the smooth section is less than the distance from the mating notch to the end of the spline section far from the smooth section.

[0009] According to the steering gear input structure of some embodiments of the present utility model, the outer peripheral wall of the input shaft spline shaft includes the smooth section and the spline section. The spline section includes a smooth area and a spline area distributed circumferentially, and the mating notch is formed at the smooth area.

[0010] According to the steering gear input structure of some embodiments of the present utility model, the mating notch extends circumferentially along the outer peripheral wall of the input shaft spline shaft, and the mating notch is configured as an annular groove.

[0011] According to the steering gear input structure of some embodiments of the present utility model, the input shaft universal joint is formed with a weakening gap communicating with the connecting groove. The input shaft universal joint is formed with two fixing holes, and the two fixing holes are respectively located on both sides of the weakening gap. The fastener is adapted to pass through the two fixing holes to tighten the input shaft universal joint at the weakening gap.

[0012] According to the steering gear input structure of some embodiments of the present utility model, the fixing hole communicates with the weakening gap and is located on the same side of the connecting groove.

[0013] According to the steering gear input structure of some embodiments of the present utility model, the axial direction of the fixing hole is perpendicular to the axial direction of the connecting groove.

[0014] The present utility model also proposes a vehicle.

[0015] A vehicle according to an embodiment of the present invention is provided with the steering gear input structure described in any one of the above.

[0016] The advantages of the vehicle and the above-mentioned steering gear input structure 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, become apparent in part from the following description, or 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 be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is an exploded schematic view of the steering gear input structure according to an embodiment of the present invention Figure 1 ;

[0020] Figure 2 is an exploded schematic view of the steering gear input structure according to an embodiment of the present invention Figure 2 ;

[0021] Figure 3 is an exploded schematic view of the steering gear input structure according to an embodiment of the present invention Figure 3 ;

[0022] Figure 4 is an exploded schematic view of the steering gear input structure according to an embodiment of the present invention Figure 4 ;

[0023] Figure 5 is a structural schematic view of the input shaft spline shaft according to an embodiment of the present invention Figure 1 ;

[0024] Figure 6 is a structural schematic view of the input shaft spline shaft according to an embodiment of the present invention Figure 2 ;

[0025] Figure 7 is a structural schematic view of the input shaft spline shaft according to an embodiment of the present invention Figure 3 ;

[0026] Figure 8 is a structural schematic view of the input shaft spline shaft according to an embodiment of the present invention Figure 4 ;

[0027] Figure 9 is a structural schematic view of the input shaft spline shaft according to an embodiment of the present invention Figure 5 ;

[0028] Figure 10 is a schematic structure of the input shaft universal joint according to an embodiment of the present utility model Figure 1 ;

[0029] Figure 11 is a schematic structure of the input shaft universal joint according to an embodiment of the present utility model Figure 2 ;

[0030] Figure 12 is a schematic structure of the input shaft universal joint according to an embodiment of the present utility model Figure 3 .

[0031] Reference numerals:

[0032] Steering gear input structure 100,

[0033] Input shaft universal joint 1, connecting groove 11, inlet 111, spline wall surface 112, fixing hole 12, side plate portion 13, weakening gap 14, input shaft spline shaft 2, smooth section 21, spline section 22, smooth area 221, mating notch 222, spline area 223, fastener 3. Detailed implementation manners

[0034] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0035] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 thus should not be construed as limiting 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, the meaning of "a plurality" is two or more.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] The following refers to Figures 1 - 12 Describe the steering gear input structure 100 according to an embodiment of the present utility model. Through the cooperation between the connecting groove 11 and the spline section 22, the input shaft universal joint 1 can drive the input shaft spline shaft 2 to rotate. Through the cooperation between the fastener 3 and the fixing hole 12, the reliability of the rotation of the input shaft spline shaft 2 driven by the input shaft universal joint 1 can be improved. And by providing the smooth section 21, the accuracy of the installation position of the input shaft spline shaft 2 can be ensured, avoiding the input shaft spline shaft 2 slipping out of the input shaft universal joint 1 when the vehicle vibrates, and causing the vehicle to lose the steering function.

[0038] As Figures 1 - 4 shown, the steering gear input structure 100 according to an embodiment of the present utility model includes: an input shaft universal joint 1 and an input shaft spline shaft 2.

[0039] The input shaft universal joint 1 is formed with a connecting groove 11, and the connecting groove 11 is formed with a penetration opening 111. Among them, one of the inner peripheral wall of the connecting groove 11 and the outer peripheral wall of the input shaft spline shaft 2 includes a smooth section 21 and a spline section 22 connected in sequence along the axial direction, and the other of the inner peripheral wall of the connecting groove 11 and the outer peripheral wall of the input shaft spline shaft 2 is configured as a spline wall surface 112, so that when the input shaft spline shaft 2 extends into the connecting groove 11, the spline wall surface 112 passes through the smooth section 21 and the spline section 22 in sequence to be keyed with the key grooves of the spline section 22. The input shaft universal joint 1 is further provided with a fixing hole 12 communicating with the connecting groove 11, and the fixing hole 12 is used for passing through the fastener 3.

[0040] Specifically, the input shaft universal joint 1 is connected to the input shaft spline shaft 2 to transmit the force applied by the user to the steering wheel. A connecting groove 11 is formed on the input shaft universal joint 1. The connecting groove 11 is used to enable the input shaft spline shaft 2 to extend into its interior to cooperate with the input shaft universal joint 1, so that the input shaft spline shaft 2 can rotate driven by the input shaft universal joint 1 and transmit the force on the steering wheel to the steering gear. And the connecting groove 11 is formed with a penetration opening 111, and the penetration opening 111 is used to enable the input shaft spline shaft 2 to extend into the interior of the connecting groove 11 through this to cooperate with the input shaft universal joint 1, as Figures 1 - 4 and Figures 10 - 12As shown, the connecting groove 11 can be arranged at the lower part of the input shaft universal joint 1, and the connecting groove 11 extends vertically, and the insertion opening 111 is arranged at the lower end of the connecting groove 11, so that the input shaft spline shaft 2 can extend upward into the input shaft universal joint 1 from the lower part of the input shaft universal joint 1, so that the two can be fitted together.

[0041] Moreover, a smooth section 21 and a spline section 22 can be arranged on the inner peripheral wall of the connecting groove 11, the outer peripheral wall of the input shaft spline shaft 2 can be constructed as a spline wall surface 112, or the inner peripheral wall of the connecting groove 11 can be constructed as a spline wall surface 112, and a smooth section 21 and a spline section 22 are arranged on the outer peripheral wall of the input shaft spline shaft 2, so as to realize the fit between the input shaft universal joint 1 and the input shaft spline shaft 2 through the fit between the spline wall surface 112 and the spline section 22, and the smooth section 21 and the spline section 22 are arranged in sequence along the axial direction, that is, the smooth section 21 and the spline section 22 are arranged in sequence along the up and down directions, so that when the input shaft spline shaft 2 extends into the connecting groove 11, the spline wall surface 112 can pass through the smooth section 21 and the spline section 22 in sequence, and is fitted with the spline section 22 by means of keyway fit, so that the input shaft spline shaft 2 can rotate driven by the input shaft universal joint 1, and the keyway fit method is simple and reliable, easy to install and disassemble, that is, it is convenient to maintain or replace the input shaft universal joint 1 and the input shaft spline shaft 2, and the later maintenance cost can be reduced.

[0042] In the embodiment as Figures 1 - 9 shown, a smooth section 21 and a spline section 22 are arranged on the outer peripheral wall of the input shaft spline shaft 2 from top to bottom in sequence, and the inner peripheral wall of the connecting groove 11 is constructed as a spline wall surface 112. When installing the input shaft universal joint 1 and the input shaft spline shaft 2, the input shaft spline shaft 2 can be extended into the connecting groove 11, so that the spline wall surface 112 can pass through the smooth section 21 and the spline section 22 in sequence, and is fitted with the spline section 22 by means of keyway fit, so as to realize the fit between the input shaft universal joint 1 and the input shaft spline shaft 2, and the input shaft spline shaft 2 can rotate driven by the input shaft universal joint 1.

[0043] In addition, a fixing hole 12 is further arranged on the input shaft universal joint 1. The fixing hole 12 is used for passing through a fastener 3 to fix the input shaft spline shaft 2, and the fixing hole 12 is communicated with the connecting groove 11, that is, the fastener 3 can extend into the connecting groove 11 and cooperate with the input shaft spline shaft 2 to fix the input shaft spline shaft 2, ensuring that the input shaft universal joint 1 can drive the input shaft spline shaft 2 to rotate and improving the reliability of the input shaft spline shaft 2 rotating driven by the input shaft universal joint 1. Among them, the fastener 3 can be a bolt, and the fixing hole 12 can be formed with an internal thread, and the fit between the fastener 3 and the fixing hole 12 is realized through the fit between the bolt and the internal thread, so as to realize the fixing of the input shaft spline shaft 2.

[0044] Among them, it should be noted that a smooth section 21 is provided on the input shaft spline shaft 2. During the assembly of the input shaft spline shaft 2, when the smooth section 21 completely extends into the connection groove 11, the user can see the upper end of the smooth section 21 along the direction of the fixing hole 12. In this way, the upper end of the smooth section 21 can prevent the fastener 3 from being inserted until the input shaft spline shaft 2 is correctly installed and the fastener 3 is engaged with the input shaft spline shaft 2. Then, the accuracy of the installation position of the input shaft spline shaft 2 can be ensured through the smooth section 21, and it can be ensured that there is no engagement between the input shaft universal joint 1 and the input shaft spline shaft 2 before the input shaft spline shaft 2 is fixed, so as to avoid the input shaft spline shaft 2 slipping out of the input shaft universal joint 1 when the vehicle vibrates, resulting in the vehicle losing its steering function.

[0045] Thus, the force applied by the user to the steering wheel can be transmitted to the steering gear through the input shaft universal joint 1 and the input shaft spline shaft 2. The engagement between the input shaft universal joint 1 and the input shaft spline shaft 2 can be achieved through the cooperation between the connection groove 11 and the spline section 22. The fixing of the input shaft spline shaft 2 can be achieved through the cooperation between the fastener 3 and the fixing hole 12. Moreover, by setting the smooth section 21, the accuracy of the installation position of the input shaft spline shaft 2 can be ensured, and further, the keyway engagement between the input shaft universal joint 1 and the input shaft spline shaft 2 can be ensured on the premise that the input shaft spline shaft 2 is fixed by the fastener 3.

[0046] According to the steering gear input structure 100 of the embodiment of the present invention, the steering wheel can control the wheels through the input shaft universal joint 1 and the input shaft spline shaft 2. The input shaft universal joint 1 can drive the input shaft spline shaft 2 to rotate through the cooperation between the connection groove 11 and the spline section 22. The reliability of the input shaft spline shaft 2 rotating driven by the input shaft universal joint 1 can be improved through the cooperation between the fastener 3 and the fixing hole 12. And by setting the smooth section 21, the accuracy of the installation position of the input shaft spline shaft 2 can be ensured, avoiding the input shaft spline shaft 2 slipping out of the input shaft universal joint 1 when the vehicle vibrates, resulting in the vehicle losing its steering function.

[0047] In some embodiments, the axial length of the smooth section 21 is greater than the distance between the insertion opening 111 and the fixing hole 12.

[0048] Specifically, such as Figure 7 and Figure 12As shown, the distance between the insertion opening 111 and the fixing hole 12 can be made D1, and the axial length of the smooth section 21 is D2, where D2 > D1. When the smooth section 21 does not fully extend into the connection groove 11, the keyway fit between the input shaft universal joint 1 and the input shaft spline shaft 2 cannot be achieved, that is, the input shaft spline shaft 2 cannot rotate driven by the input shaft universal joint 1. When the smooth section 21 fully extends into the connection groove 11 but the spline section 22 does not fully extend into the connection groove 11, the smooth section 21 will block the insertion opening 111, preventing the fastener 3 from extending into the connection groove 11 through the insertion opening 111 to cooperate with the input shaft spline shaft 2 at the mating notch 222, that is, the input shaft spline shaft 2 cannot be fixed. When both the smooth section 21 and the spline section 22 fully extend into the connection groove 11, the input shaft universal joint 1 and the input shaft spline shaft 2 can achieve keyway fit, and the fastener 3 can cooperate with the input shaft spline shaft 2 at the mating notch 222. At this time, the input shaft spline shaft 2 can rotate driven by the input shaft universal joint 1, and it can be avoided that the input shaft spline shaft 2 disengages from the input shaft universal joint 1 when the vehicle vibrates.

[0049] That is to say, by making the axial length of the smooth section 21 greater than the distance between the insertion opening 111 and the fixing hole 12, it can be ensured that the input shaft universal joint 1 and the input shaft spline shaft 2 achieve keyway fit on the premise of being fixed by the fastener 3, and further, it can be prevented that the input shaft spline shaft 2 disengages from the input shaft universal joint 1 when the vehicle vibrates, resulting in the vehicle losing its steering function.

[0050] In some embodiments, the outer peripheral wall of the input shaft spline shaft 2 is provided with a mating notch 222, and the fastener 3 is adapted to extend from the fixing hole 12 to the connection groove 11 for axial limiting at the mating notch 222.

[0051] Specifically, the fixing hole 12 communicates with the connection groove 11, and the fastener 3 can extend from the fixing hole 12 into the interior of the connection groove 11 to cooperate with the input shaft spline shaft 2 to fix the input shaft spline shaft 2. A mating notch 222 is provided on the outer peripheral wall of the input shaft spline shaft 2, and the mating notch 222 is used to achieve the cooperation between the input shaft spline shaft 2 and the fastener 3. That is, when the input shaft spline shaft 2 is extended into the connection groove 11, the fastener 3 can be extended from the fixing hole 12 into the connection groove 11 to cooperate with the input shaft spline shaft 2 at the mating notch 222 for axial limiting of the input shaft spline shaft 2 to avoid the input shaft spline shaft 2 disengaging from the input shaft universal joint 1 when the vehicle vibrates.

[0052] Among them, it should be noted that, such as Figures 5 - 7As shown, the mating notch 222 can be configured to be recessed radially inward from the outer peripheral wall of the input shaft spline shaft 2, and the mating notch 222 can be configured to adapt to the shape of the fastener 3 so that the fastener 3 can fit better with the mating notch 222, thereby improving the reliability of fixing the input shaft spline shaft 2 at the mating notch 222 by the fastener 3. In addition, the setting position of the mating notch 222 needs to be aligned with the insertion opening 111 on the premise that the input shaft spline shaft 2 is completely inserted into the connection groove 11 to ensure the accuracy of the installation position of the input shaft spline shaft 2.

[0053] In some embodiments, the distance from the mating notch 222 to the end of the spline section 22 close to the smooth section 21 is less than the distance from the mating notch 222 to the end of the spline section 22 far from the smooth section 21.

[0054] Specifically, as Figures 5 - 7 shown, the smooth section 21 is located above the spline section 22, so that the distance from the mating notch 222 to the end of the spline section 22 close to the smooth section 21 is less than the distance from the mating notch 222 to the end of the spline section 22 far from the smooth section 21, that is, the length of the spline section 22 above the mating notch 222 is less than the length of the spline section 22 below the mating notch 222. Furthermore, the length of the spline section 22 below the mating notch 222 can be made longer to ensure that when the fastener 3 is mated with the input shaft spline shaft 2 at the mating notch 222, the mating length between the spline section 22 and the connection groove 11 is longer, so as to ensure the mating reliability between the input shaft universal joint 1 and the input shaft spline shaft 2, and further ensure the reliability of the input shaft spline shaft 2 rotating driven by the input shaft universal joint 1.

[0055] In some embodiments, the outer peripheral wall of the input shaft spline shaft 2 includes a smooth section 21 and a spline section 22. The spline section 22 includes smooth regions 221 and spline regions 223 distributed circumferentially, and the mating notch 222 is formed at the smooth region 221.

[0056] Specifically, as Figure 1 、 Figure 5 and Figure 7As shown, a smooth section 21 and a spline section 22 are provided on the outer peripheral wall of the input shaft spline shaft 2. The smooth section 21 can be used to ensure the accuracy of the installation position of the input shaft spline shaft 2, and the spline section 22 can be used to achieve the cooperation with the input shaft universal joint 1. A smooth area 221 and a spline area 223 are provided on the spline section 22. The spline area 223 is used to cooperate with the spline wall surface 112 to achieve the cooperation between the input shaft spline shaft 2 and the input shaft universal joint 1. A mating notch 222 is formed in the smooth area 221, that is, the smooth area 221 can be used to achieve the cooperation with the fastener 3, that is, the fastener 3 can cooperate with the input shaft spline shaft 2 at the mating notch 222 on the smooth area 221 to fix the input shaft spline shaft 2, and the spline area 223 and the smooth area 221 are circumferentially distributed along the input shaft spline shaft 2, that is, both the spline area 223 and the smooth area 221 extend axially along the input shaft spline shaft 2 to ensure that the spline area 223 can cooperate with the spline wall surface 112.

[0057] In some embodiments, the mating notch 222 is circumferentially extended and provided on the outer peripheral wall of the input shaft spline shaft 2, and the mating notch 222 is configured as an annular groove.

[0058] Specifically, as Figures 3 - 4 and Figures 8 - 9 shown, a mating notch 222 is provided on the outer peripheral wall of the input shaft spline shaft 2. The mating notch 222 is used to enable the fastener 3 and the input shaft spline shaft 2 to cooperate here to fix the input shaft spline shaft 2 and improve the reliability of the input shaft universal joint 1 driving the input shaft spline shaft 2 to rotate. Setting the mating notch 222 to extend circumferentially along the input shaft spline shaft 2 can increase the setting length of the mating notch 222, facilitating the cooperation between the fastener 3 and the input shaft spline shaft 2 at the mating notch 222. And configuring the mating notch 222 as an annular groove can enable the fastener 3 and the input shaft spline shaft 2 to cooperate at the mating notch 222 regardless of the installation position of the input shaft spline shaft 2 in the connection groove 11 to fix the input shaft spline shaft 2, thereby avoiding the input shaft spline shaft 2 disengaging from the input shaft universal joint 1 during vehicle vibration.

[0059] In some embodiments, the input shaft universal joint 1 forms a weakening gap 14 communicating with the connection groove 11. The input shaft universal joint 1 forms two fixing holes 12, and the two fixing holes 12 are respectively located on both sides of the weakening gap 14. The fastener 3 is adapted to pass through the two fixing holes 12 to tighten the input shaft universal joint 1 at the weakening gap 14.

[0060] Specifically, as Figures 10 - 12As shown, the input shaft universal joint 1 includes two side plate parts 13 located on both sides of the connecting groove 11. The two side plate parts 13 are respectively connected to both sides of the connecting groove 11, and the two side plate parts 13 are arranged in parallel, so that a weakening gap 14 is formed between the two side plate parts 13. The weakening gap 14 is used to reduce the structural strength of the input shaft universal joint 1 at this place to avoid fatigue or fracture of the input shaft universal joint 1 caused by stress concentration. And the weakening gap 14 is communicated with the connecting groove 11, which can avoid the too tight fit between the input shaft universal joint 1 and the input shaft spline shaft 2, resulting in accelerated wear or difficult assembly between the two. Moreover, fixing holes 12 are formed on both side plate parts 13, and the fastener 3 can pass through the fixing holes 12 on the two side plate parts 13. That is, when fixing the input shaft spline shaft 2, the fastener 3 can sequentially pass through the two fixing holes 12 to realize the fixing of the input shaft spline shaft 2, and can improve the connection reliability and connection stability between the fastener 3 and the fixing holes 12. And when the fastener 3 cooperates with the fixing holes 12, the input shaft universal joint 1 can be tightened at the weakening gap 14 to further improve the reliability of fixing the input shaft spline shaft 2, effectively avoiding the input shaft spline shaft 2 from disengaging from the input shaft universal joint 1 during vehicle vibration.

[0061] It should be noted that the two side plate parts 13 are arranged in parallel, that is, the fixing holes 12 on the two side plate parts 13 are also arranged in parallel, and the two fixing holes 12 can be respectively arranged at the same position on the two side plate parts 13 to facilitate the cooperation between the fastener 3 and the two fixing holes 12 to realize the fixing of the input shaft spline shaft 2.

[0062] In some embodiments, the fixing hole 12 is communicated with the weakening gap 14 and both are located on the same side of the connecting groove 11.

[0063] Specifically, the fixing hole 12 is used to cooperate with the fastener 3 to realize the fixing of the input shaft spline shaft 2, and the weakening gap 14 is used to reduce the structural strength of the input shaft universal joint 1 at the weakening gap 14 and can be tightened when fixing the input shaft spline shaft 2 to improve the reliability of fixing the input shaft spline shaft 2. Among them, the fixing hole 12 is communicated with the connecting groove 11. Connecting the fixing hole 12 with the weakening gap 14 can connect the weakening gap 14 with the connecting groove 11, that is, extend the weakening gap 14 into the inside of the connecting groove 11 to effectively avoid the too tight fit between the input shaft universal joint 1 and the input shaft spline shaft 2, resulting in accelerated wear or difficult assembly between the two, and enable the input shaft universal joint 1 to be tightened at the weakening gap 14 to reduce the internal size of the connecting groove 11 and improve the reliability of fixing the input shaft spline shaft 2.

[0064] Moreover, by arranging both the fixing hole 12 and the weakening gap 14 on the same side of the connecting groove 11, it is convenient to tighten the input shaft universal joint 1 at the weakening gap 14 through the fastener 3, so as to improve the reliability of fixing the input shaft spline shaft 2. In addition, the fixing hole 12 and the weakening gap 14 can be machined on the same side of the connecting groove 11, which can simplify the production process and reduce the processing difficulty.

[0065] In some embodiments, the axial direction of the fixing hole 12 is perpendicular to the axial direction of the connecting groove 11.

[0066] Specifically, the input shaft universal joint 1 is provided with a fixing hole 12 and a connecting groove 11. The fixing hole 12 is used to cooperate with the fastener 3 to achieve axial limit of the input shaft spline shaft 2. The connecting groove 11 is used to cooperate with the spline section 22 to achieve the cooperation between the input shaft universal joint 1 and the input shaft spline shaft 2. By making the axial direction of the fixing hole 12 perpendicular to the axial direction of the connecting groove 11, the input shaft spline shaft 2 can be inserted into the connecting groove 11 along the axial direction of the connecting groove 11 to achieve the cooperation between the input shaft universal joint 1 and the input shaft spline shaft 2. Then, the fastener 3 is inserted into the connecting groove 11 along the axial direction of the fixing hole 12 to fix the input shaft spline shaft 2, that is, the fastener 3 can cooperate with the input shaft spline shaft 2 along the direction perpendicular to the axial direction of the input shaft spline shaft 2, thereby axially limiting the input shaft spline shaft 2 and preventing the input shaft spline shaft 2 from disengaging from the input shaft universal joint 1 during vehicle vibration, resulting in the failure of the vehicle's steering function.

[0067] In addition, it should be noted that both ends of the connecting groove 11 can penetrate through the input shaft universal joint 1. The connecting groove 11 is used to cooperate with the spline section 22 so that the input shaft universal joint 1 can drive the input shaft spline shaft 2 to rotate. By making both ends of the connecting groove 11 penetrate through the input shaft universal joint 1, the length of the connecting groove 11 can be made long enough, so that no matter how the input shaft spline shaft 2 is installed in the connecting groove 11, the spline section 22 can cooperate with the connecting groove 11, which can improve the reliability of the cooperation between the connecting groove 11 and the spline section 22, and further improve the reliability of the rotation of the input shaft spline shaft 2 driven by the input shaft universal joint 1.

[0068] Furthermore, in actual design, a section of the length below the connecting groove 11 can also be constructed to be smooth rod-shaped, and the length of this section is less than the distance between the insertion opening 111 and the fixing hole 12, that is, less than D1, to ensure the reliability of the cooperation between the connecting groove 11 and the spline section 22.

[0069] The present utility model also proposes a vehicle.

[0070] A vehicle according to an embodiment of the present utility model is provided with the steering gear input structure 100 of any one of the above. The control of the steering wheel over the wheels can be realized through the input shaft universal joint 1 and the input shaft spline shaft 2. The input shaft universal joint 1 can drive the input shaft spline shaft 2 to rotate through the cooperation between the connecting groove 11 and the spline section 22. The reliability of the rotation of the input shaft spline shaft 2 driven by the input shaft universal joint 1 can be improved through the cooperation between the fastener 3 and the fixing hole 12. Moreover, by providing the smooth section 21, the accuracy of the installation position of the input shaft spline shaft 2 can be ensured, and the input shaft spline shaft 2 can be prevented from disengaging from the input shaft universal joint 1 when the vehicle vibrates, so that the vehicle loses its steering function.

[0071] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0072] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A steering gear input structure, characterized in that: include: An input shaft universal joint (1) and an input shaft spline shaft (2), wherein the input shaft universal joint (1) is formed with a connecting groove (11), and the connecting groove (11) is formed with a penetration opening (111); wherein one of the inner peripheral wall of the connecting groove (11) and the outer peripheral wall of the input shaft spline shaft (2) comprises a smooth section (21) and a spline section (22) sequentially connected in the axial direction, and the other of the inner peripheral wall of the connecting groove (11) and the outer peripheral wall of the input shaft spline shaft (2) is configured as a spline wall surface (112), so that when the input shaft spline shaft (2) extends into the connecting groove (11), the spline wall surface (112) sequentially passes through the smooth section (21) and the spline section (22) to cooperate with the keyway of the spline section (22); The input shaft universal joint (1) is also provided with a fixing hole (12) communicating with the connecting groove (11), and the fixing hole (12) is used for passing a fastener (3).

2. The steering input structure according to claim 1, characterized in that: The axial length of the smooth section (21) is greater than the distance between the penetration opening (111) and the fixing hole (12).

3. The steering input structure according to claim 1, characterized in that: The outer peripheral wall of the input shaft spline shaft (2) is provided with a matching recess (222), and the fastener (3) is suitable for extending from the fixing hole (12) to the connecting groove (11) to perform axial limiting at the matching recess (222).

4. The steering input structure according to claim 3, characterized in that: The distance from the matching recess (222) to the end of the spline segment (22) close to the smooth segment (21) is smaller than the distance from the matching recess (222) to the end of the spline segment (22) far from the smooth segment (21).

5. The steering gear input structure according to claim 3, characterized in that: The outer peripheral wall of the input shaft spline shaft (2) comprises the smooth section (21) and the spline section (22); the spline section (22) comprises a smooth area (221) and a spline area (223) distributed along the circumferential direction; the matching recess (222) is formed at the smooth area (221).

6. The steering input structure according to claim 3, characterized in that: The matching recess (222) is arranged on the outer peripheral wall of the input shaft spline shaft (2) and extends in the circumferential direction, and the matching recess (222) is configured as an annular groove.

7. The steering gear input structure according to any one of claims 1 to 6, characterized in that: The input shaft universal joint (1) is formed with a weakened gap (14) communicating with the connecting groove (11), and the input shaft universal joint (1) is formed with two fixing holes (12), the two fixing holes (12) are respectively located on both sides of the weakened gap (14), and the fastener (3) is suitable for being inserted into the two fixing holes (12) so as to tighten the input shaft universal joint (1) at the weakened gap (14).

8. The steering gear input structure according to claim 7, characterized in that: The fixing hole (12) is in communication with the weakened gap (14), and both are located on the same side of the connecting groove (11).

9. The steering gear input structure according to any one of claims 1 to 6, characterized in that: The axial direction of the fixing hole (12) is perpendicular to the axial direction of the connecting groove (11).

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

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