Connecting joint of input shaft
The design of the connecting mechanism with its snap-fit groove and ball bearings solves the problems of slow assembly and difficult disassembly of the input shaft and steering shaft, achieving a fast and stable rotary connection, reducing operational difficulty and friction, extending service life, and improving transmission efficiency.
Patent Information
- Application Number
- CN202421364115.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-15
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-06-15
AI Technical Summary
In the existing technology, the connection method between the input shaft and the steering shaft has a slow assembly speed and is prone to loss during disassembly, resulting in high operation difficulty and increased cost.
A connecting mechanism is adopted, including a docking sleeve and a docking block. Through the tight fit of the snap-fit groove and the snap-fit part, combined with the design of the ball and the rolling groove, a stable rotational connection between the first docking part and the second docking part is achieved.
It simplifies the assembly process, improves assembly efficiency, reduces operational difficulty and cost, extends service life, reduces friction and wear, and improves transmission efficiency.
Smart Images
Figure CN222334316U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobiles, in particular to a connecting joint of an input shaft. Background Art
[0002] As the popularity of automated driving in automobiles increases, the demand for electric power steering systems increases. The steering shaft type electric power steering is the most cost-effective and widely used type of electric steering in electric steering. The torsion bar structure is an indispensable component. The input shaft and output shaft of the steering gear are connected by a torsion bar, so that when the steering wheel is turned, the steering shaft drives the output shaft to rotate. The general connection method between the torsion bar and the input shaft and output shaft of the steering gear is that one end of the torsion bar is in the form of a spline, and the torsion bar is pressed in by a press, and the other end of the torsion bar is in the form of a cylinder. After the torsion bar is pressed in, the input shaft and the output shaft are first pulled a certain distance to ensure the gap, and then the output shaft is fixed, and the input shaft is rotated by the mechanism. The corresponding center position of the output shaft and the output shaft is found through the relationship between the angle and the torque, and then the equipment drills the output shaft position, punches the same through hole in the output shaft and the cylindrical end of the torsion bar, and then presses the cylindrical pin into the hole to connect the output shaft with the torsion bar;
[0003] The utility model patent with announcement number CN 218863123 U proposes a connecting joint of an input shaft and an output shaft, and the key points of the technical solution are: comprising a steering shaft, one end of the steering shaft is provided with an output shaft body, and one end of the steering shaft is provided with an input shaft body; a disassembly component is arranged at one end of the steering shaft and is used to disassemble the output shaft body, the disassembly component comprises a mounting groove, the mounting groove is arranged at one end of the steering shaft, the inner circular wall surface of the mounting groove is provided with a slide groove, the inner circular wall surface of the mounting groove is provided with a limiting groove, the slide groove is connected with the limiting groove, and the steering shaft, output shaft body, input shaft body, mounting groove, slide groove, limiting groove, connector, fixing block, connecting groove, clamping column, limiting column and clamping groove are used in cooperation with each other, so as to facilitate the disassembly of the output shaft body and release the connection between the steering shaft and the output shaft body, so that the staff can maintain the output shaft body.
[0004] In the actual use of the above case, since the input shaft and the steering shaft are connected by bolts, not only the assembly speed is slow but also the bolts are easy to be lost during long-term use and disassembly. Therefore, the utility model provides a connecting joint of the input shaft to meet the needs. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:
[0006] A connecting joint of an input shaft comprises a steering shaft and an input shaft body, wherein one end of the steering shaft is fixedly connected to a No. 1 docking part, one end of the input shaft body is fixedly connected to a No. 2 docking part, and a connecting mechanism is used for a stable rotational connection between the No. 1 docking part and the No. 2 docking part, and the connecting mechanism is connected to the steering shaft and the input shaft body.
[0007] Optionally, docking holes are provided inside the No. 1 docking part and the No. 2 docking part, and the connecting mechanism includes two groups of docking sleeves and docking blocks located inside the two docking holes, and docking plates are fixedly connected to the outside of the two groups of docking sleeves and docking blocks.
[0008] Optionally, the exteriors of the two butt joint plates are fixedly connected with reinforcing ribs, and the cross-section of the reinforcing ribs is triangular.
[0009] Optionally, a clamping groove is provided inside the docking sleeve, and three annularly distributed clamping parts are fixedly connected to one side of the docking block, and the outside of the clamping parts is adapted to the inside of the clamping groove.
[0010] Optionally, two arc-shaped protrusions are provided on the outside of the clamping portion, a weakened groove integrally formed with the arc-shaped protrusions is provided on the other side of the clamping portion, and two arc-shaped grooves adapted to the arc-shaped protrusions are provided in the inner wall of the clamping groove.
[0011] Optionally, rolling grooves are provided on the outside of the docking sleeve and the docking block, and a plurality of balls are connected to the inside of each rolling groove in a rolling manner. Limiting grooves adapted to the balls are provided in the inner walls of the No. 1 docking part and the No. 2 docking part.
[0012] Compared with the prior art, the utility model has at least the following beneficial effects:
[0013] In the above scheme, by setting up the connection mechanism, the first docking part and the second docking part can be quickly and stably connected in rotation during actual use. This connection method not only simplifies the assembly process and improves assembly efficiency, but also facilitates subsequent maintenance and disassembly work. The entire connection mechanism is simple in design and easy to operate. Connection and disassembly can be completed without the use of special tools, reducing the difficulty and cost of operation.
[0014] In the above scheme, by providing the ball and the rolling groove, the ball can be rolled and connected in the rolling groove and the limit groove during actual use, which effectively reduces the friction and wear of the connecting mechanism during rotation and prolongs the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present invention and, together with the description, further serve to explain the principles of the present invention and enable those skilled in the relevant art to make and use the present invention.
[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the connecting joint of the input shaft;
[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the connection joint;
[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the connecting joint.
[0019] [Reference Signs]
[0020] 1. Steering shaft; 2. Input shaft body; 3. No. 1 docking part; 4. No. 2 docking part; 5. Connecting mechanism; 501. Docking plate; 502. Reinforcing rib; 503. Docking sleeve; 504. Rolling groove; 505. Docking block; 506. Ball; 507. Clamping part; 508. Clamping groove.
[0021] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION
[0022] The following is a detailed description of an input shaft connection joint provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.
[0023] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).
[0024] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.
[0025] It is to be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers.
[0026] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.
[0027] like Figures 1 to 3As shown, an embodiment of the utility model provides a connecting joint of an input shaft, including a steering shaft 1 and an input shaft body 2, one end of the steering shaft 1 is fixedly connected to a No. 1 docking portion 3, one end of the input shaft body 2 is fixedly connected to a No. 2 docking portion 4, and a connecting mechanism 5, the connecting mechanism 5 is used for a stable rotation connection between the No. 1 docking portion 3 and the No. 2 docking portion 4, the connecting mechanism 5 is connected to the steering shaft 1 and the input shaft body 2, in this embodiment, as shown in Figure 1 to Figure 2, the No. 1 docking portion 3 and the No. 2 docking portion 4 are both provided with docking holes, the connecting mechanism 5 includes two groups of docking sleeves 503 and docking blocks 505 located inside the two docking holes, the two groups of docking sleeves 503 and the docking blocks 505 are both fixedly connected to the outside with a docking plate 501, and the two docking plates 501 are fixedly connected to the outside. 1 are fixedly connected with reinforcing ribs 502 on the outside, and the cross section of the reinforcing ribs 502 is triangular. A clamping groove 508 is provided inside the docking sleeve 503. Three annularly distributed clamping parts 507 are fixedly connected to one side of the docking block 505. The outside of the clamping part 507 is adapted to the inside of the clamping groove 508. Two arc-shaped protrusions are provided on the outside of the clamping part 507. A weakening groove integrally formed with the arc-shaped protrusion is provided on the other side of the clamping part 507. Two arc-shaped grooves adapted to the arc-shaped protrusion are provided in the inner wall of the clamping groove 508. The two sets of docking sleeves 503 and the docking block 505 are respectively placed in the docking holes of the first docking part 3 and the second docking part 4. The docking sleeves 503 and the docking plates 501 outside the docking blocks 505 are connected to the first docking parts 3 and the second docking parts 4. The connecting parts 4 are tightly fitted, and the cross-section of the reinforcing rib 502 is triangular to provide additional strength and stability. The clamping groove 508 inside the docking sleeve 503 corresponds to the clamping part 507 on the docking block 505, and the outside of the clamping part 507 is adapted to the inside of the clamping groove 508 to ensure that the three annularly distributed clamping parts 507 can smoothly enter the clamping groove 508. The outside of the clamping part 507 has two arc-shaped protrusions to ensure that the two arc-shaped protrusions match the two arc-shaped grooves in the inner wall of the clamping groove 508. Through the matching of the arc-shaped protrusions and the arc-shaped grooves, the stability and connection strength of the clamping part 507 in the clamping groove 508 are ensured, and the entire connecting mechanism 5 is installed, realizing the stable rotation connection between the steering shaft 1 and the input shaft body 2. When the steering wheel is turned, the steering shaft 1 drives the first docking part 3 to rotate, and the rotation of the first docking part 3 is transmitted to the second docking part 4 through the connecting mechanism 5. Due to the tight fit of the docking sleeve 503 and the docking block 505 in the connecting mechanism 5 through the clamping groove 508 and the clamping part 507, and the matching of the arc-shaped protrusion and the arc-shaped groove, a stable and reliable rotation connection is achieved. The rotation of the second docking part 4 finally drives the input shaft body 2 to rotate, realizing the function of the steering system. Due to the unique clamping design, the installation and disassembly process of the connecting mechanism 5 is faster and simpler. Through the tight fit of the clamping groove 508 and the clamping part 507, and the strengthening effect of the reinforcing rib 502, the entire connecting mechanism 5 has higher structural stability.The matching design of the arc-shaped protrusion and the arc-shaped groove reduces the friction during the rotation process, thereby extending the service life of the connecting mechanism 5. The stable connection and rotation reduce energy loss and improve the transmission efficiency of the entire steering system. The quick disassembly design makes it more convenient when maintenance or replacement of parts is required.
[0028] like Figures 2 to 3 As shown, rolling grooves 504 are provided on the outside of the docking sleeve 503 and the docking block 505, and multiple balls 506 are connected to the inside of each rolling groove 504. Limiting grooves matched with the balls 506 are provided in the inner walls of the No. 1 docking part 3 and the No. 2 docking part 4. When the steering shaft 1 drives the docking sleeve 503 to rotate through the No. 1 docking part 3, the balls 506 roll accordingly in the rolling grooves 504. These balls 506 not only reduce the direct friction between the docking sleeve 503 and the docking block 505, but also ensure that the docking sleeve 503 and the docking block 505 can rotate smoothly along the inner walls of the No. 1 docking part 3 and the No. 2 docking part 4. Since the balls 506 are constrained by the limiting grooves on the inner walls of the No. 1 docking part 3 and the No. 2 docking part 4 during the rotation process, the movement of the balls 506 is restricted to a predetermined path, thereby ensuring the stability and reliability of the rotation. The rolling of the balls 506 in the rolling grooves 504 and the limiting grooves significantly reduces the direct friction between the docking sleeve 503 and the docking block 505, as well as the No. 1 docking part 3 and the No. 2 docking part 4, thereby reducing The wear is reduced and the service life of the connecting mechanism 5 is extended. Due to the reduction of friction, the energy loss of the connecting mechanism 5 during the rotation process is also reduced, thereby improving the transmission efficiency of the entire steering system. The rolling constraint of the ball 506 in the limit groove ensures that the docking sleeve 503 and the docking block 505 can stably and reliably rotate along the inner walls of the No. 1 docking part 3 and the No. 2 docking part 4, avoiding the problem of unstable rotation caused by friction and looseness. The design of the rolling groove 504 and the limit groove allows the ball 506 to fully play its role in reducing friction and wear, while also optimizing the overall structural design of the connecting mechanism 5 and improving its reliability and durability.
[0029] The working principle provided by the utility model is that two sets of docking sleeves 503 and docking blocks 505 are respectively placed in the docking holes of the first docking part 3 and the second docking part 4, and the docking plates 501 outside the docking sleeves 503 and the docking blocks 505 are tightly fitted with the first docking part 3 and the second docking part 4. The cross-section of the reinforcing ribs 502 is triangular to provide additional strength and stability. The clamping groove 508 inside the docking sleeve 503 corresponds to the clamping part 507 on the docking block 505, and the outside of the clamping part 507 is adapted to the inside of the clamping groove 508. , ensuring that the three annularly distributed clamping parts 507 can smoothly enter the clamping groove 508. The outside of the clamping part 507 has two arc-shaped protrusions, ensuring that the two arc-shaped protrusions match the two arc-shaped grooves in the inner wall of the clamping groove 508. Through the matching of the arc-shaped protrusions and the arc-shaped grooves, the stability and connection strength of the clamping part 507 in the clamping groove 508 are ensured. The entire connecting mechanism 5 is installed, and a stable rotation connection between the steering shaft 1 and the input shaft body 2 is realized. When the steering wheel rotates, the steering shaft 1 drives the first docking part 3 to rotate, and the first docking part 3 is rotated. The rotation of the No. 1 docking part 3 is transmitted to the No. 2 docking part 4 through the connecting mechanism 5. Due to the close fit of the docking sleeve 503 and the docking block 505 in the connecting mechanism 5 through the clamping groove 508 and the clamping part 507, and the matching of the arc-shaped protrusion and the arc-shaped groove, a stable and reliable rotation connection is achieved. The rotation of the No. 2 docking part 4 finally drives the input shaft body 2 to rotate, realizing the function of the steering system. Due to the unique clamping design, the installation and disassembly process of the connecting mechanism 5 is faster and simpler. Through the close fit of the clamping groove 508 and the clamping part 507, and the strengthening effect of the reinforcing rib 502, the entire connecting mechanism 5 has higher structural stability. The matching design of the arc-shaped protrusion and the arc-shaped groove reduces the friction during the rotation process, thereby extending the service life of the connecting mechanism 5. The stable connection and rotation reduce energy loss and improve the transmission efficiency of the entire steering system. The quick disassembly design makes it more convenient when maintenance or replacement of parts is required. When the steering shaft 1 drives the docking sleeve 503 to rotate through the No. 1 docking part 3, the ball 506 rolls in the rolling groove 504.These balls 506 not only reduce the direct friction between the docking sleeve 503 and the docking block 505, but also ensure that the docking sleeve 503 and the docking block 505 can rotate smoothly along the inner walls of the No. 1 docking part 3 and the No. 2 docking part 4. Since the balls 506 are constrained by the limiting grooves on the inner walls of the No. 1 docking part 3 and the No. 2 docking part 4 during the rotation process, the movement of the balls 506 is restricted to a predetermined path, thereby ensuring the stability and reliability of the rotation. The rolling of the balls 506 in the rolling grooves 504 and the limiting grooves significantly reduces the direct friction between the docking sleeve 503 and the docking block 505, as well as the No. 1 docking part 3 and the No. 2 docking part 4, thereby reducing The wear is reduced and the service life of the connecting mechanism 5 is extended. Due to the reduction of friction, the energy loss of the connecting mechanism 5 during the rotation process is also reduced, thereby improving the transmission efficiency of the entire steering system. The rolling constraint of the ball 506 in the limit groove ensures that the docking sleeve 503 and the docking block 505 can stably and reliably rotate along the inner walls of the No. 1 docking part 3 and the No. 2 docking part 4, avoiding the problem of unstable rotation caused by friction and looseness. The design of the rolling groove 504 and the limit groove allows the ball 506 to fully play its role in reducing friction and wear, while also optimizing the overall structural design of the connecting mechanism 5 and improving its reliability and durability.
[0030] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.
[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A connecting joint for an input shaft, comprising a steering shaft (1) and an input shaft body (2), characterized in that: One end of the steering shaft (1) is fixedly connected to a first docking portion (3), and one end of the input shaft body (2) is fixedly connected to a second docking portion (4); A connecting mechanism (5), the connecting mechanism (5) being used for rotational connection between the first docking portion (3) and the second docking portion (4), the connecting mechanism (5) being connected to the steering shaft (1) and the input shaft body (2), the first docking portion (3) and the second docking portion (4) both having docking holes formed therein, the connecting mechanism (5) comprising two groups of docking sleeves (503) and docking blocks (505) located inside the two docking holes, and the outsides of the two groups of docking sleeves (503) and docking blocks (505) being fixedly connected with docking plates (501).
2. The input shaft connection joint according to claim 1, characterized in that: The exteriors of the two butt joint plates (501) are both fixedly connected with reinforcing ribs (502), and the cross-section of the reinforcing ribs (502) is triangular.
3. The input shaft connection joint according to claim 1, characterized in that: A clamping groove (508) is provided inside the docking sleeve (503), and three annularly distributed clamping portions (507) are fixedly connected to one side of the docking block (505), with the outside of the clamping portion (507) being adapted to the inside of the clamping groove (508).
4. The input shaft connection joint according to claim 3, characterized in that: Two arc-shaped protrusions are provided on the outside of the clamping portion (507), a weakened groove integrally formed with the arc-shaped protrusions is provided on the other side of the clamping portion (507), and two arc-shaped grooves matching with the arc-shaped protrusions are provided in the inner wall of the clamping groove (508).
5. The input shaft connection joint according to claim 1, characterized in that: The docking sleeve (503) and the docking block (505) are both provided with rolling grooves (504) on their exteriors, a plurality of balls (506) are rollingly connected inside each rolling groove (504), and the inner walls of the first docking portion (3) and the second docking portion (4) are both provided with limiting grooves adapted to the balls (506).