Steering transmission assembly

Abstract

The invention discloses a steering transmission assembly. The transmission shaft comprises a first transmission shaft body and a second transmission shaft body which can be separated, and the hinge seats are located at the ends of the first transmission shaft body and the second transmission shaft body respectively. A connecting groove is formed in the first transmission shaft, a connecting rod capable of being inserted into the connecting groove is arranged on the second transmission shaft, and the connecting rod is inserted into the connecting groove so that the first transmission shaft and the second transmission shaft can be connected. A plurality of limiting grooves which are formed in the length direction at intervals are formed in the inner wall of the connecting groove, a limiting mechanism is arranged on the connecting rod, the limiting mechanism comprises a limiting block which can stretch out and draw back in the radial direction, and the outer side of the limiting block can enter or exit from the limiting grooves in different positions in a sliding mode. The device has the advantages that the transportation convenience, the on-site assembly flexibility and the fault maintenance efficiency of the assembly are remarkably improved, and the engineering requirements for adjustable length and quick replacement under complex working conditions are met.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile steering transmission components, in particular to a steering transmission component. Background Art

[0002] The steering shaft, a transmission assembly connecting the steering wheel and steering gear, is a crucial component of a vehicle's steering system. The design of the steering shaft assembly must ensure reliable torque transmission. In existing technology, the shaft assembly consists of a single drive shaft and two articulated mounts, both of which are designed as an integral whole. This integrated design limits the adjustment flexibility of the shaft and the articulated mounts, making assembly of the shaft assembly with the steering gear and steering wheel difficult and laborious. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a steering transmission assembly that improves installation efficiency, improves connection convenience, saves installation effort, and has both rigidity and flexibility.

[0004] In order to solve the above technical problems, the steering transmission assembly of the present invention includes a transmission shaft with articulated seats at both ends, the transmission shaft includes a detachable first transmission shaft and a second transmission shaft, and the articulated seats are respectively located at the ends of the first transmission shaft and the second transmission shaft; a connecting groove is opened inside the first transmission shaft, and a connecting rod that can be inserted into the connecting groove is provided on the second transmission shaft, and the connecting rod is inserted into the connecting groove to connect the first transmission shaft and the second transmission shaft; a plurality of limit grooves arranged at intervals along the length direction are provided on the inner wall of the connecting groove, and a limit mechanism is provided on the connecting rod, and the limit mechanism includes a limit block that can be radially extended and retracted, and the outer side of the limit block can slide into or out of the limit grooves at different positions.

[0005] The limiting mechanism further comprises a spring, which is located inside the limiting block and provides tension for outward elastic support.

[0006] The limit blocks are symmetrically arranged in pairs, and the spring is located between the two limit blocks.

[0007] An outer surface of the first transmission shaft is provided with an adjustment mechanism for controlling the extension and retraction of the limit block. The adjustment mechanism includes a plurality of rotating rings sleeved on the first transmission shaft, and the position of each rotating ring corresponds to the position of the inner limit groove.

[0008] The rotating ring is provided with a first magnet, and the outer side of the limiting block is provided with a third magnet. The magnetic poles of the opposite ends of the first magnet and the third magnet are the same.

[0009] The first transmission shaft is further provided with a second magnet, which corresponds to the axial position of each rotating ring. The angular position of the second magnet in the circumferential direction is staggered with that of the first magnet and has a magnetic pole opposite to that of the third magnet.

[0010] Both ends of the first transmission shaft and the second transmission shaft are provided with a transmission mechanism, each of the transmission mechanisms includes a transmission ring connected to the transmission shaft and a clamping rod fixed on the articulated seat; a guide groove is provided on the surface of the transmission ring and can rotate relative to the first transmission shaft, and a guide pin is provided at the end of the clamping rod for inserting into the guide groove. The rotation of the transmission ring drives the guide groove to squeeze the guide pin so that the clamping rod moves axially; a guide groove is provided on the inner side of the clamping rod, and a limit rod is provided on the transmission shaft. The outer end of the limit rod is located in the guide groove so that the clamping rod is guided by the limit rod and drives the articulated seat to move axially.

[0011] Each of the articulated seats includes a fixed part in the middle and ears that can move radially on both sides. A sliding groove is opened inside the fixed part, and a movable plate for connecting with the steering component is provided on the ear; a slider placed in the sliding groove is provided at the side end of the movable plate so that the movable plate can move radially guided by the sliding groove.

[0012] The transmission ring and the first transmission shaft and the second transmission shaft can be locked in position by fasteners.

[0013] The guide grooves are distributed in a curved shape.

[0014] Advantages of the present invention: (1) Traditional rotating shafts are generally indivisible as a whole, which is difficult to disassemble and has poor adaptability. The present invention adopts a detachable structural design, which divides the transmission shaft into a first transmission shaft and a second transmission shaft. A reliable plug-in connection is formed by the connection rod and the connection groove. The limit mechanism on the connecting rod further improves the connection stability and positioning accuracy, ensuring axial rigidity while having the characteristics of rapid disassembly and assembly, significantly improving the transportation convenience of the components, the flexibility of on-site assembly and the efficiency of fault maintenance, and meeting the engineering requirements for adjustable length and rapid replacement under complex working conditions.

[0015] (2) Through the synergistic action of the first, second, and third magnets, a non-contact magnetically controlled limit mechanism is formed, which can achieve precise release and locking of the limit block, allowing the operator to quickly adjust the length of the drive shaft without disassembly. This structure greatly improves the convenience of operation and adjustment accuracy, effectively reduces installation errors, and significantly improves the installation efficiency of the steering shaft assembly.

[0016] (3) With the help of the cooperation of the transmission ring, the guide groove and the guide pin, the position of the card rod can be flexibly adjusted, so that sufficient adjustment freedom can be obtained. The flexible and adjustable characteristics of this articulated seat greatly improve the convenience of its connection with the steering wheel and steering gear, significantly speed up the installation process of the steering shaft assembly, improve the overall efficiency, and solve the problem of laborious installation of the transmission shaft assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the steering transmission assembly of the present invention; Figure 2 This is a cross-sectional structural diagram of the connecting rod and the first transmission shaft in the steering transmission assembly of the present invention; Figure 3 This is a structural diagram showing the separation of the connecting rod and the connecting groove in the steering transmission assembly of the present invention; Figure 4 This is a structural diagram of the adjustment mechanism in the steering transmission assembly of the present invention, which is a cross-sectional view and separated from the first transmission shaft; Figure 5 This is a detailed structural diagram of the transmission mechanism in the steering transmission assembly of the present invention; Figure 6 This is a detailed structural diagram of the articulated seat in the steering transmission assembly of the present invention. DETAILED DESCRIPTION

[0018] The steering transmission assembly of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0019] like Figure 1 、 2 As shown, a steering transmission assembly of the present invention includes a transmission shaft with hinged seats 3 at both ends. The transmission shaft includes a separable first transmission shaft 1 and a second transmission shaft 2. The hinged seats 3 are respectively located at the ends of the first transmission shaft 1 and the second transmission shaft 2. A connecting groove 4 is opened inside the first transmission shaft 1. Figure 3 As shown, the second transmission shaft 2 is provided with a connecting rod 6 that can be inserted into the connecting groove 4. The connecting rod 6 is inserted into the connecting groove 4 to connect the first transmission shaft 1 and the second transmission shaft 2. The inner wall of the connecting groove 4 is provided with a plurality of limit grooves 5 arranged at intervals along the length direction. Each limit groove 5 is in a state of communication with the connecting groove 4. A limiting mechanism is provided on the connecting rod 6. The limiting mechanism includes a limit block 3 that can be radially extended and retracted. The outer side of the limit block 73 can slide into or out of the limit slot 5 at different positions; the limiting mechanism also includes a spring 72, which is located on the inner side of the limit block 73 and provides outward elastic support tension. When two limit blocks 73 are symmetrically arranged, the spring 72 is located between the two limit blocks 73 for limiting.

[0020] Furthermore, if Figure 4As shown, the outer surface of the first transmission shaft 1 is provided with an adjustment mechanism for controlling the extension and retraction of the limit block 73, and the adjustment mechanism includes a plurality of rotating rings 91 sleeved on the first transmission shaft 1, and the position of each rotating ring 91 corresponds to the position of the inner limit groove 5; a first magnet 94 is provided on the rotating ring 91, and a third magnet 93 is provided on the outer side of the limit block 73, and the magnetic poles of the first magnet 94 and the opposite ends of the third magnet 93 are the same. Through the rotation of the rotating ring 91, the first magnet 94 and the third magnet 93 are magnetically attracted to achieve entry and exit; a second magnet 92 is also provided on the first transmission shaft 1, and the second magnet 92 corresponds to the axial position of each rotating ring 91. The angular position of the second magnet 92 in the circumferential direction is staggered with the first magnet 94 and is opposite to the magnetic pole of the opposite end of the third magnet 93. When the limit block 73 enters the limit groove 5, the limit block 73 is adsorbed and fixed, thereby improving stability and reliability; as shown Figure 4 As shown, in this embodiment, the magnets are arranged in pairs. When the length of the transmission shaft assembly needs to be adjusted, the rotating ring 91 on one side can be rotated with force. The rotation of the rotating ring 91 will drive the two first magnets 94 to rotate. At this time, one of the first magnets 94 will rotate upward and the other first magnet 94 will rotate downward. The two first magnets 94 will separate from the corresponding second magnet 92 in the process of following the rotation of the rotating ring 91. When the rotating ring 91 drives the two first magnets 94 to rotate to ninety degrees, the two first magnets 94 will correspond to the third magnet 93 on the limit block 73. One end of the first magnet 94 is set as the south pole, and one end of the third magnet 93 is also set as the south pole. Therefore, a strong repulsive force will be generated between the corresponding first magnet 94 and the third magnet 93. At this time, the position of the first magnet 94 remains unchanged, and the third magnet 93 will retract into the installation slot 71 due to the repulsive force. The retracted third magnet 93 will drive the limit block 73 to retract into the installation slot 71. The retraction of the limit block 73 will squeeze and contract the spring 72. When the locking cam 73 is in the unlocked position, the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, so that the locking cam 73 is unlocked and the locking cam 73 is unlocked.

[0021] Furthermore, transmission mechanisms are provided at both ends of the first transmission shaft 1 and the second transmission shaft 2, and each transmission mechanism includes a transmission ring 11 that is sleeved with the transmission shaft and a clamping rod 14 fixed on the articulated seat 3; a guide groove 13 is provided on the surface of the transmission ring 11 and can rotate relative to the first transmission shaft 1, and a guide pin 15 is provided at the end of the clamping rod 14 for inserting into the guide groove 13. The rotation of the transmission ring 11 drives the guide pin 15 to move, causing the clamping rod 14 to move axially; a guide groove 17 is provided on the inner side of the clamping rod 14, and a limit rod 12 is provided on the transmission shaft. The outer end of the limit rod 12 is located in the guide groove 17 so that the clamping rod 14 is guided by the limit rod 12 and drives the articulated seat 3 to move axially.

[0022] Furthermore, if Figure 5 、 6 As shown, each articulated seat 3 includes a fixed portion in the middle and ears that can move radially on both sides, a slide groove 81 is opened inside the fixed portion, and a movable plate 85 for connecting to the steering component is provided on the ear; a slider 84 is provided on the side end of the movable plate 85 and is placed in the slide groove 81, so that the movable plate 85 can be radially moved and adjusted with the slide groove 81 as a guide, so that it can adapt to steering wheels and steering gear transmission components of different sizes; when the articulated seat needs to be adjusted, the fastener 16 on the first transmission shaft 1 needs to be adjusted, and the fastener 16 can be removed from the first transmission shaft 1 and the transmission ring 11. At this time, the transmission ring 11 loses its restriction and can be directly rotated. The rotation of the transmission ring 11 will cause the two guide grooves 13 to squeeze the guide pin 15, and the guide pin 15 will be squeezed along the guide groove 13 The movable space of the movable plate 85 provides a larger operating space when the articulated seat in the transmission shaft assembly is connected to the steering wheel and the articulated seat on the steering gear, which significantly speeds up the installation process of the steering shaft assembly, improves the overall efficiency, and solves the problem of laborious installation of the transmission shaft assembly.

Claims

1. A steering transmission assembly comprising a transmission shaft with hinged seats (3) at both ends, characterized in that: The transmission shaft comprises a separable first transmission shaft (1) and a second transmission shaft (2), and the hinge seat (3) is respectively located at the ends of the first transmission shaft (1) and the second transmission shaft (2); a connecting groove (4) is provided inside the first transmission shaft (1), and a connecting rod (6) capable of being inserted into the connecting groove (4) is provided on the second transmission shaft (2), and the connecting rod (6) is inserted into the connecting groove (4) so as to connect the first transmission shaft (1) and the second transmission shaft (2); a plurality of limiting grooves (5) spaced apart along the length direction are provided on the inner wall of the connecting groove (4), and a limiting mechanism (7) is provided on the connecting rod (6), and the limiting mechanism (7) comprises a limiting block (73) capable of radial expansion and contraction, and the outer side of the limiting block (73) can slide into or out of the limiting grooves (5) at different positions.

2. The steering transmission assembly according to claim 1, characterized in that: The limiting mechanism (7) further comprises a spring (72), wherein the spring (72) is located inside the limiting block (73) and provides tension for elastic support outward.

3. The steering transmission assembly according to claim 2, characterized in that: The limit blocks (73) are symmetrically arranged in pairs, and the spring (72) is located between the two limit blocks (73).

4. The steering transmission assembly according to claim 2 or 3, characterized in that: The outer surface of the first transmission shaft (1) is provided with an adjustment mechanism for controlling the extension and contraction of the limit block (73), the adjustment mechanism comprising a plurality of rotating rings (91) sleeved on the first transmission shaft (1), the position of each rotating ring (91) corresponding to the position of the inner limit groove (5).

5. The steering transmission assembly according to claim 4, characterized in that: A first magnet (94) is provided on the rotating ring (91), a third magnet (93) is provided on the outer side of the limiting block (73), and the magnetic poles of the opposite ends of the first magnet (94) and the third magnet (93) are the same.

6. The steering transmission assembly according to claim 5, characterized in that: A second magnet (92) is further provided on the first transmission shaft (1), the second magnet (92) corresponding to the axial position of each rotating ring (91), the angular position of the second magnet (92) in the circumferential direction being staggered with the first magnet (94) and having a magnetic pole opposite to that of the third magnet (93).

7. The steering transmission assembly according to claim 6, characterized in that: Both ends of the first transmission shaft (1) and the second transmission shaft (2) are provided with transmission mechanisms, and each transmission mechanism includes a transmission ring (11) sleeved with the transmission shaft and a clamping rod (14) fixed on the hinge seat (3); a guide groove (13) is provided on the surface of the transmission ring (11) and can rotate relative to the first transmission shaft (1); a guide pin (15) is provided at the end of the clamping rod (14) for inserting into the guide groove (13); the transmission ring (11) rotates to drive the guide groove (13) to squeeze the guide pin (15) so that the clamping rod (14) moves axially; a guide groove (17) is provided on the inner side of the clamping rod (14); a limit rod (12) is provided on the transmission shaft, and the outer end of the limit rod (12) is located in the guide groove (17) so that the clamping rod (14) is guided by the limit rod (12) and drives the hinge seat (3) to move axially.

8. The steering transmission assembly according to claim 7, characterized in that: Each of the hinged seats (3) includes a fixed portion in the middle and ears on both sides that can move radially. A sliding groove (81) is provided inside the fixed portion. A movable plate (85) for connecting with a steering component is provided on the ears. A slider (84) is provided at the side end of the movable plate (85) and is placed in the sliding groove (81), so that the movable plate (85) can move radially guided by the sliding groove (81).

9. The steering transmission assembly according to claim 1, characterized in that: The transmission ring (11) and the first transmission shaft (1) and the second transmission shaft (2) can be locked in position by fasteners (16).

10. The steering transmission assembly according to claim 1, characterized in that: The guide grooves (13) are distributed in a curved shape.

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