A combined tie rod assembly

Abstract

This application relates to a combined tie rod assembly, specifically in the field of automotive tie rod technology. It includes a tie rod and ball joint assemblies at both ends of the tie rod. The tie rod comprises a first tie rod section and a second tie rod section, each end of which is connected to one of the two ball joint assemblies. Both ends of the first and second tie rod sections have external threads, which are located on the same thread line. A sleeve is connected to the common thread on the external threads of both sections, with the axial length of the external thread exceeding the length of the sleeve. This design allows for easy adjustment of the swing angle of the disassembled tie rod sections, facilitating the installation and removal of the tie rod assembly from the vehicle body. During installation, the two ball joint assemblies can be installed on the vehicle body first, and then the tie rod sections are connected and fixed using the sleeve. During disassembly, the tie rod sections can be separated first, and then the ball joint assemblies connected to the vehicle body can be removed, avoiding obstruction of the assembly and disassembly by the tie rod.

Description

Technical Field

[0001] This application relates to the field of automotive tie rod technology, and in particular to a combined tie rod assembly. Background Technology

[0002] Steering tie rods are components in a car's steering system. Straight tie rods transmit steering power to the steering knuckle to control wheel steering, while lateral tie rods connect the left and right steering arms, enabling both wheels to be synchronized and toe-in / toe-out to be adjusted.

[0003] Utility model patent CN217598668U discloses an automotive tie rod assembly, including a tie rod body, two adjusting screws, two ball joints, two ball pins, two connecting rods, and two locking bolts. The two adjusting screws are threaded onto both ends of the tie rod body. The two ball joints are respectively installed on the ends of the two adjusting screws located outside the tie rod body. The two ball pins are movably assembled within the two ball joints. The two connecting rods are fixedly connected to the two ball pins. The two locking bolts are respectively assembled onto the two connecting rods. The assembly also includes two sealing components, which are respectively disposed on the two ball joints and their corresponding connecting rods.

[0004] Regarding the aforementioned technologies, the inventors believe that in some maintenance situations, the ball joint is deformed and cannot be removed normally, and the pull rod connected to the ball joint cannot be adjusted in position, making disassembly difficult; in some installation situations, after the ball joint at one end of the pull rod assembly is installed, it is difficult to align and install the other end, or the operating space is narrow due to the obstruction of the pull rod itself, which also makes installation difficult. Utility Model Content

[0005] This application provides a modular tie rod assembly that can split the tie rod into two sections without changing the distance between the two ball joints. The split tie rod is easy to adjust the position of the swing angle, thereby facilitating the installation and removal of the tie rod assembly from the vehicle body.

[0006] This application provides a combined tie rod assembly, which adopts the following technical solution:

[0007] A combined tie rod assembly includes a tie rod and ball joint assemblies located at both ends of the tie rod. The tie rod includes a tie rod section one and a tie rod section two, one end of which is connected to two ball joint assemblies respectively. The ends of the tie rod section one and the tie rod section two facing each other are provided with external threads. The external threads of the tie rod section one and the tie rod section two are located on the same thread line. A sleeve is connected to the common thread on the external threads of the tie rod section one and the tie rod section two. The axial length of the external thread is greater than the axial length of the sleeve.

[0008] By adopting the above technical solution, by rotating the sleeve, the sleeve can be moved completely outside the first or second tie rod section. At this time, the sleeve can no longer block the other tie rod section, and the first tie rod section can be directly separated from the second tie rod section. The separation is achieved by swinging, keeping the distance between the two ball joint assemblies unchanged.

[0009] Optionally, a nut is threaded onto the external thread, and the nut is located on the outer side of the end of the sleeve.

[0010] By adopting the above technical solution, the nut is used to press the end of the sleeve, and the nut cooperates to limit the sleeve and prevent the sleeve from rotating on its own.

[0011] Optionally, a spring washer is provided between the nut and the sleeve, and the spring washer is sleeved outside the external thread.

[0012] By adopting the above technical solution, the spring washer can prevent the nut from loosening.

[0013] Optionally, the end of the first pull rod section is provided with a slot, the slot passing through both side walls of the first pull rod section, and the end of the second pull rod section is integrally fixed with a plug, the plug being inserted into the slot.

[0014] By adopting the above technical solution, the relative rotation between the first and second pull rod sections is avoided through the cooperation of the insert and the slot, and separation from the sleeve is avoided. Moreover, the three-way through structure of the slot allows the insert to be directly separated from the slot by moving radially along the first pull rod section.

[0015] Optionally, the sleeve has a regular hexagonal cross-sectional shape.

[0016] By adopting the above technical solution, it is convenient for personnel to turn the socket with a wrench or by hand.

[0017] Optionally, the sleeve is provided with two cotter pins, which respectively penetrate the first section of the pull rod and the second section of the pull rod.

[0018] By adopting the above technical solution, the cotter pin plays a role in restricting the relative rotation between tie rod section one, tie rod section two and sleeve, so as to keep the threaded connection structure stable and prevent the sleeve from rotating.

[0019] Optionally, the sleeve is provided with a cotter pin, which also passes through the insert block and passes through the inside of the slot.

[0020] By adopting the above technical solution, a single cotter pin can simultaneously prevent relative rotation of the sleeve, tie rod section one, and tie rod section two, and also prevent tie rod section one and tie rod section two from moving away from each other.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. The disassembled tie rod section one and tie rod section two facilitate the adjustment of the swing angle, thereby facilitating the installation and disassembly of the tie rod assembly to the vehicle body;

[0023] 2. During installation, you can choose to install two ball joint assemblies on the vehicle body first, and then use a sleeve to connect and fix tie rod section one and tie rod section two together; during disassembly, you can first separate tie rod section one and tie rod section two, and then remove the ball joint assembly connected to the vehicle body to avoid the tie rod from obstructing the disassembly and assembly.

[0024] 3. By setting an anti-loosening structure, the sleeve is prevented from rotating spontaneously. Attached Figure Description

[0025] Figure 1 This is a perspective view of a combined tie rod assembly according to Embodiment 1;

[0026] Figure 2 This is a split diagram of Example 1;

[0027] Figure 3 This is a cross-sectional view of Embodiment 2;

[0028] Figure 4 This is a cross-sectional view of Embodiment 3.

[0029] Explanation of reference numerals in the attached diagram: 1. Ball head assembly; 2. Tie rod section one; 3. Tie rod section two; 4. External thread; 5. Sleeve; 6. Nut; 61. Spring washer; 21. Slot; 31. Insert block; 7. Cotter pin. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] Example 1:

[0032] Reference Figure 1 and Figure 2 This embodiment discloses a combined pull rod assembly, including a pull rod and ball joint assemblies 1 located at both ends of the pull rod. The ball joint assembly 1 is a combination of a ball shell and a ball pin. The pull rod includes a first pull rod section 2 and a second pull rod section 3. One end of the first pull rod section 2 and the second pull rod section 3 are respectively connected to two ball joint assemblies 1. Specifically, the ends of the first pull rod section 2 and the second pull rod section 3 that are far apart from each other are respectively fixed to the ball shells of the two ball joint assemblies 1.

[0033] Both tie rod section 2 and tie rod section 3 are cylindrical and coaxially arranged. The opposite ends of tie rod section 2 and tie rod section 3 are provided with external threads 4, which are located on the same thread line. A sleeve 5 is threadedly connected to the external threads 4 of both tie rod section 2 and tie rod section 3. The axial length of the external threads 4 is greater than the axial length of the sleeve 5, meaning the sleeve 5 can be completely moved outside of tie rod section 2 or tie rod section 3 by rotation. The sleeve 5 has a regular hexagonal cross-section, allowing it to be turned by hand or with a wrench.

[0034] A nut 6 is threaded onto the external thread 4. The nut 6 is located on the outer side of the end of the sleeve 5. A spring washer 61 is provided between the nut 6 and the sleeve 5. The spring washer 61 is sleeved on the external thread 4. The nut 6 is used to press the end of the sleeve 5. The two nuts 6 cooperate to limit the sleeve 5 and prevent the sleeve 5 from rotating on its own. The spring washer 61 has an anti-loosening effect on the nut 6.

[0035] The end of the first pull rod section 2 is provided with a slot 21, which penetrates both side walls of the first pull rod section 2. The end of the second pull rod section 3 is integrally fixed with a plug 31, which is inserted into the slot 21. Through the cooperation between the plug 31 and the slot 21, relative rotation between the first pull rod section 2 and the second pull rod section 3 is avoided, and separation from the sleeve 5 is prevented. Furthermore, due to the three-way through structure of the slot 21, the plug 31 can be directly separated from the slot 21 by moving radially along the first pull rod section 2.

[0036] The implementation principle of a combined tie rod assembly according to an embodiment of this application is as follows: by rotating the sleeve 5, the sleeve 5 is moved completely outside the tie rod section 2 or the tie rod section 3. At this time, the sleeve 5 cancels the obstruction of the other tie rod section, and the tie rod section 2 can be directly separated from the tie rod section 3 by swinging, keeping the distance between the two ball joint assemblies 1 unchanged.

[0037] This design allows for easy adjustment of the swing angle of the disassembled tie rod sections 2 and 3, facilitating the installation and removal of the tie rod assembly from the vehicle body. During installation, two ball joint assemblies 1 can be installed on the vehicle body first, and then tie rod sections 2 and 3 can be connected and fixed using the sleeve 5. During disassembly, tie rod sections 2 and 3 can be separated first, and then the ball joint assembly 1 connected to the vehicle body can be removed, avoiding obstruction of the assembly and disassembly by the tie rods.

[0038] Example 2:

[0039] Reference Figure 3 A combined tie rod assembly, in embodiment two, differs from embodiment one in that it does not use nut 6 and spring washer 61, but adopts another anti-loosening method: sleeve 5 is provided with two cotter pins 7, which pass through tie rod section one 2 and tie rod section two 3 respectively.

[0040] After the cotter pin 7 passes through the corresponding tie rod section 2 and tie rod section 3, the personnel can pry open both ends of the cotter pin 7 to prevent it from detaching spontaneously. The cotter pin 7 serves to restrict the relative rotation between tie rod section 2, tie rod section 3 and sleeve 5, keeping the threaded connection structure stable and preventing the sleeve 5 from rotating.

[0041] When the tie rod assembly is used on a vehicle, the tie rod mainly bears axial tensile or compressive forces. These forces are borne through the threaded connection between the sleeve 5 and tie rod section 2 and tie rod section 3. Therefore, the cotter pin 7 will not break due to normal use of the tie rod.

[0042] Example 3:

[0043] Reference Figure 4 A combined pull rod assembly, the difference between embodiment three and embodiment two is that: a cotter pin 7 is provided through the sleeve 5, the cotter pin 7 also passes through the insert block 31, and the cotter pin 7 passes through the inside of the slot 21.

[0044] Compared with Embodiment 2, the number of cotter pins 7 in this embodiment is reduced to one. However, the cotter pin 7 passes through the first section 2 of the pull rod at both the insert block 31 and the slot 21, which can simultaneously prevent the sleeve 5, the first section 2 of the pull rod, and the second section 3 from rotating relative to each other, and also prevent the first section 2 of the pull rod and the second section 3 from moving away from each other.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A combined tie rod assembly, comprising a tie rod and ball joint assemblies (1) located at both ends of the tie rod, characterized in that: The pull rod includes a pull rod section one (2) and a pull rod section two (3). One end of the pull rod section one (2) and the pull rod section two (3) are respectively connected to two ball head assemblies (1). The ends of the pull rod section one (2) and the pull rod section two (3) facing each other are provided with external threads (4). The external threads (4) of the pull rod section one (2) and the pull rod section two (3) are located on the same thread line. A sleeve (5) is connected to the external threads (4) of the pull rod section one (2) and the pull rod section two (3) together. The axial length of the external threads (4) is greater than the axial length of the sleeve (5).

2. The combined tie rod assembly according to claim 1, characterized in that: A nut (6) is threaded onto the external thread (4), and the nut (6) is located on the outer side of the end of the sleeve (5).

3. The combined tie rod assembly according to claim 2, characterized in that: A spring washer (61) is provided between the nut (6) and the sleeve (5), and the spring washer (61) is sleeved on the outside of the external thread (4).

4. The combined tie rod assembly according to claim 1, characterized in that: The end of the first pull rod section (2) is provided with a slot (21), the slot (21) penetrates both sides of the first pull rod section (2), and the end of the second pull rod section (3) is integrally fixed with a plug (31), the plug (31) is inserted into the slot (21).

5. A combined tie rod assembly according to claim 1, characterized in that: The sleeve (5) has a regular hexagonal cross-sectional shape.

6. The combined tie rod assembly according to claim 1, characterized in that: The sleeve (5) is provided with two cotter pins (7), which pass through the first section (2) and the second section (3) of the pull rod, respectively.

7. A combined tie rod assembly according to claim 4, characterized in that: The sleeve (5) is provided with a cotter pin (7) which also passes through the insert (31) and passes through the inside of the slot (21).

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