A thrust rod

Abstract

The present invention relates to a thrust rod, comprising a rod body, a joint shell, a ball head, a polymer elastomer, a length adjustment device and a gap adjustment device, wherein the joint shell is installed at the end of the rod body, the joint shell has a mounting portion, the rod body is a hollow structure, the length adjustment device has a control end and a clamping end, the length adjustment device is installed in the mounting portion, the control end and the clamping end of the length adjustment device both extend out of the mounting portion, the control end controls the clamping end to clamp the inner side of the rod body, the polymer elastomer is die-cast outside the ball head, the ball head and the polymer elastomer are sleeved in the joint shell, the gap adjustment device is installed between the polymer elastomer and the joint shell, the gap adjustment device has a free state and a tightened state, the diameter of the gap adjustment device in the tightened state is smaller than that in the free state, thereby increasing the service life of the tire.

Description

Technical Field

[0001] The invention relates to the technical field of thrust rods, in particular to a thrust rod. Background Art

[0002] The existing multi-axle automobile thrust rod is composed of a joint shell fixed on both ends of the pull rod. The vehicle is cushioned by the polymer elastomer in the joint shell when turning. The disadvantage is that long-term use will cause the polymer elastomer in the joint shell to be damaged, resulting in a gap, the thrust rod length change positioning is inaccurate, the bridges lose parallelism and the tires of each bridge are not in a straight line, which increases the wear of the tire and reduces the service life of the tire. Summary of the invention

[0003] In order to overcome the technical defects of the prior art, the present invention provides a thrust rod which can reduce tire wear and increase tire life.

[0004] The technical solution adopted by the present invention is:

[0005] A thrust rod comprises a rod body, a joint shell, a ball head, a polymer elastomer, a length adjustment device and a gap adjustment device, wherein the joint shell is installed at the end of the rod body, the joint shell has a mounting portion, the rod body is a hollow structure, the length adjustment device has a control end and a clamping end, the length adjustment device is installed in the mounting portion, the control end and the clamping end of the length adjustment device both extend out of the mounting portion, the control end controls the clamping end to clamp the inner side of the rod body, the polymer elastomer is die-cast outside the ball head, the ball head and the polymer elastomer are sleeved in the joint shell, the gap adjustment device is installed between the polymer elastomer and the joint shell, the gap adjustment device has a free state and a tightened state, and the diameter of the gap adjustment device in the tightened state is smaller than that in the free state.

[0006] Preferably, the length adjustment device includes a traction assembly, a control rod and a plurality of clamping columns, each of the clamping columns forms a clamping end, the traction assembly forms a control end, the mounting portion is provided with a control through hole, a control cavity, a sliding hole and a plurality of clamping holes, the traction assembly is rotatably mounted in the control through hole and the control cavity, the control rod slides along the sliding hole, the traction assembly is transmission-connected with the control rod, each of the clamping columns is slidably mounted in the corresponding clamping hole, the control rod is provided with a top connection section and a retraction section, each of the clamping columns protrudes from the mounting portion and is clamped with the rod body when cooperating with the top connection section, and each of the clamping columns retracts when cooperating with the retraction section.

[0007] Preferably, the traction assembly includes a rotating column and a cam mechanism, the rotating column is rotatably installed in the control through hole, the cam mechanism is rotatably installed in the control cavity, the rotating column passes through the cam mechanism and thereby drives the cam mechanism to rotate in the control cavity, the cam mechanism is provided with guide rail grooves around it, the control rod extends into the guide rail grooves and slides along the guide rail grooves, and during the rotation of the size cam mechanism, the control rod is pulled to slide along the sliding hole to change the positions of the clamping section and the retraction section.

[0008] Preferably, the cam mechanism comprises two cam plates, the sides of the two cam plates are provided with snap-in grooves, the two snap-in grooves are assembled into a guide groove, the control rod is provided with a snap-in joint, the snap-in joint slides along the snap-in grooves of the two cam plates respectively, and the rotating column passes through the eccentric position of the cam plates respectively.

[0009] Preferably, a limiting ring is further provided outside the mounting portion, and the limiting ring is installed at the position of the rotating column.

[0010] Preferably, the top-connecting section and the retreating section are connected by a smooth curve.

[0011] Preferably, the inner side of the shaft has a plurality of serrated patterns matched with the clamping posts, and the top of each clamping post is provided with a sharp corner matched with the clamping patterns.

[0012] Preferably, the gap adjustment device includes a gap adjustment ring and a screw, the gap adjustment ring is formed by winding a strip plate, the two ends of the strip plate overlap after winding, so that the gap adjustment ring forms an overlapping area, both ends of the strip plate are provided with tensioning holes and the tensioning holes at both ends are staggered in the overlapping area of ​​the gap adjustment ring, the screw is installed on the joint shell and extends into the joint shell, the screw passes through the two staggered tensioning holes so that the axes of the two tensioning holes coincide.

[0013] The beneficial effects of the present invention are:

[0014] The joint shell is installed at the end of the rod body. The joint shell has a mounting portion. The rod body is a hollow structure. The length adjustment device has a control end and a clamping end. The length adjustment device is installed in the mounting portion. The control end and the clamping end of the length adjustment device both extend out of the mounting portion. The control end controls the clamping end to clamp the inner side of the rod body, so that the mounting portion is installed at any axial position of the rod body to correct the tire posture. The polymer elastomer is die-cast outside the ball head, and the ball head and the polymer elastomer are sleeved in the joint shell. The gap adjustment device is installed between the polymer elastomer and the joint shell. The gap adjustment device has a free state and a tightened state. The diameter of the gap adjustment device in the tightened state is smaller than that in the free state, so it holds the polymer elastomer tightly, eliminates the gap between the polymer elastomer and the ball head caused by wear, prevents the tire from shaking due to the gap between the ball head and the polymer elastomer, and increases the service life of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the installation relationship between the connector shell and the length adjustment device.

[0017] Figure 3 Schematic diagram of the connector shell structure.

[0018] Figure 4 This is a schematic diagram of the length adjustment device structure.

[0019] Figure 5 Schematic diagram of the cam mechanism structure.

[0020] Figure 6 Schematic diagram of the cam plate structure.

[0021] Figure 7 Schematic diagram of the control rod structure.

[0022] Figure 8 This is a schematic diagram of the installation position of the gap adjustment device.

[0023] Fig. 9 Schematic diagram of the gap adjustment ring structure.

[0024] Description of reference numerals:

[0025] 1. Shaft;

[0026] 2. Connector shell; 21. Mounting portion; 211. Control through hole; 212. Control cavity; 213. Sliding hole; 214. Card hole;

[0027] 3. Ball head;

[0028] 4. Polymer elastomer;

[0029] 5. Length adjustment device; 51. Traction assembly; 511. Rotating column; 512. Cam mechanism; 5121. Guide rail groove; 5122. Cam plate; 5123. Snap-on groove; 521. Top connection section; 522. Retraction section; 52. Control rod; 523. Snap-on joint; 53. Snap-on column;

[0030] 6. Gap adjustment device; 61. Gap adjustment ring; 611. Tensioning hole; 62. Screw;

[0031] 7. Sealing block. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings:

[0033] like Figure 1-9As shown, this embodiment provides a thrust rod, including a shaft 1, a joint shell 2, a ball head 3, a polymer elastomer 4, a length adjustment device 5 and a gap adjustment device 6. The joint shell 2 is installed at the end of the shaft 1, and the joint shell 2 has a mounting portion 21. The shaft 1 is a hollow structure. The length adjustment device 5 has a control end and a clamping end. The length adjustment device 5 is installed in the mounting portion 21. The control end and the clamping end of the length adjustment device 5 both extend out of the mounting portion 21. The control end controls the clamping end to clamp the inner side of the shaft 1, so that the mounting portion 21 is installed in any axial direction of the shaft 1. Position, correct the tire posture, the polymer elastomer 4 is die-cast outside the ball head 3, the ball head 3 and the polymer elastomer 4 are sleeved in the joint shell 2, and the gap adjustment device 6 is installed between the polymer elastomer 4 and the joint shell 2. The gap adjustment device 6 has a free state and a tightened state. The diameter of the gap adjustment device 6 in the tightened state is smaller than that in the free state, and then it holds the polymer elastomer 4 tightly, eliminating the gap between the polymer elastomer 4 and the ball head 3 caused by wear, preventing the tire from shaking due to the gap between the ball head 3 and the polymer elastomer 4, and increasing the service life of the tire.

[0034] The length adjustment device 5 includes a traction assembly 51, a control rod 52 and a plurality of clamping columns 53, each clamping column 53 forms a clamping end, the traction assembly 51 forms a control end, the mounting portion 21 is provided with a control through hole 211, a control cavity 212, a sliding hole 213 and a plurality of clamping holes 214, the traction assembly 51 is rotatably mounted in the control through hole 211 and the control cavity 212, the control rod 52 slides along the sliding hole 213, the traction assembly 51 is in transmission connection with the control rod 52, and the traction assembly 51 rotates to drive the control rod 52 along the sliding hole 213 slides, each clamping column 53 can be slidably installed in the corresponding clamping hole 214, the control rod 52 is provided with a top connection section 521 and a retraction section 522, the top connection section 521 and the retraction section 522 are connected by a smooth curve, each clamping column 53 protrudes from the mounting portion 21 and is clamped with the shaft 1 when matched with the top connection section 521, and each clamping column 53 retracts when matched with the retraction section 522, the inner side of the shaft 1 has a plurality of serrated patterns matched with the clamping columns 53, and the top of each clamping column 53 is provided with a sharp angle matched with the clamping patterns.

[0035] When adjusting the axial position of the mounting portion 21 on the shaft 1, the traction assembly 51 is rotated to drive the control rod 52 to slide along the sliding hole 213, and drive the retraction section 522 to the position of the clamping column 53. Then, the mounting portion 21 moves and adjusts along the shaft 1. The sharp corner on the clamping column 53 drives the entire clamping column 53 to retract to the retraction section 522 when the mounting portion 21 moves, so as to facilitate the installation action. After adjustment is in place, the traction assembly 51 is rotated. The traction assembly 51 drives the control rod 52 to slide along the sliding hole 213, so that the top section 521 slides to the position of the clamping column 53, and the clamping column 53 is pushed out so that the clamping column 53 is embedded in the serrated pattern, thereby fixing the mounting portion 21 and the shaft 1.

[0036] Among them, the traction component 51 includes a rotating column 511 and a cam mechanism 512. The rotating column 511 is rotatably installed in the control through hole 211. A limiting ring is also provided outside the mounting portion 21. The limiting ring is installed at the position of the rotating column 511. The limiting ring is a clamp. The function of the limiting ring is to prevent the rotating column 511 from falling. The cam mechanism 512 is rotatably installed in the control cavity 212. In order to machine a control cavity 212 for the cam mechanism 512 to rotate on the mounting portion 21, a hole can be drilled on the mounting portion 21 first, and then a blocking block 7 can be welded to form the control cavity 212. The rotating column 511 passes through the cam mechanism 512 and then drives the cam mechanism 512 to rotate in the control cavity 212. Guide rail grooves 5121 are provided around the cam mechanism 512. The control rod 52 extends into the guide rail grooves 5121 and slides along the guide rail grooves 5121. During the rotation of the cam mechanism 512, the control rod 52 is pulled to slide along the sliding hole 213 to change the position of the clamping section and the retracting section 522.

[0037] Among them, the cam mechanism 512 includes two cam plates 5122, and the two cam plates 5122 are provided with snap-in grooves 5123 on the four sides. The two snap-in grooves 5123 are assembled into a guide groove 5121. A snap joint 523 is provided on the control rod 52, and the snap joint 523 slides along the snap-in grooves 5123 of the two cam plates 5122 respectively. The rotating column 511 passes through the eccentric position of the cam plate 5122 respectively, so that the rotating column 511 drives each cam plate 5122. To facilitate the rotation of the rotating column 511, an inner hexagon groove is provided at the end of the rotating column 511. The rotating column 511 can be controlled to rotate by an inner hexagon wrench, thereby driving the control rod 52 to slide along the sliding hole 213.

[0038] The processing steps of the control through hole 211, the control cavity 212, the sliding hole 213 and the plurality of snap-in holes 214 and the assembly sequence of the components of the length adjustment device 5 are as follows: first, a large hole with the same diameter as the control cavity 212 is drilled on the mounting portion 21, and a sliding hole 213 extending into the large hole is drilled on the mounting portion 21, and then the first cam plate 5122 is placed in the large hole, the control rod 52 is extended into the sliding hole 213, and the second cam plate 5122 is installed, and then the blocking block 7 is welded on the large hole, and then the rotating column 511 is penetrated and the limit ring is installed.

[0039] The gap adjustment device 6 includes a gap adjustment ring 61 and a screw 62. The gap adjustment ring 61 is formed by winding a strip plate. The two ends of the strip plate overlap after winding, so that the gap adjustment ring 61 forms an overlapping area. Both ends of the strip plate are provided with tensioning holes 611, and the tensioning holes 611 at both ends are staggered in the overlapping area of ​​the gap adjustment ring 61. The screw 62 is installed on the joint shell 2 and extends into the joint shell 2. The screw 62 passes through the two staggered tensioning holes 611 so that the axes of the two tensioning holes 611 coincide with each other. Therefore, the gap adjustment ring 61 is tightened and hugs the polymer elastomer 4 to prevent the tire from shaking due to the gap between the ball head 3 and the polymer elastomer 4, thereby increasing the service life of the tire.

[0040] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A thrust rod, characterized in that: The invention comprises a shaft, a joint shell, a ball head, a polymer elastomer, a length adjustment device and a gap adjustment device, wherein the joint shell is installed at the end of the shaft, the joint shell has a mounting portion, the shaft is a hollow structure, the length adjustment device has a control end and a clamping end, the length adjustment device is installed in the mounting portion, the control end and the clamping end of the length adjustment device both extend out of the mounting portion, the control end controls the clamping end to clamp the inner side of the shaft, the polymer elastomer is die-cast outside the ball head, the ball head and the polymer elastomer are sleeved in the joint shell, the gap adjustment device is installed between the polymer elastomer and the joint shell, the gap adjustment device has a free state and a tightened state, and the gap The diameter of the adjustment device in the tightened state is smaller than that in the free state. The length adjustment device includes a traction assembly, a control rod and a plurality of clamping columns, each of the clamping columns forms a clamping end, the traction assembly forms a control end, the mounting portion is provided with a control through hole, a control cavity, a sliding hole and a plurality of clamping holes, the traction assembly is rotatably mounted in the control through hole and the control cavity, the control rod slides along the sliding hole, the traction assembly is transmission-connected with the control rod, each of the clamping columns is slidably mounted in the corresponding clamping hole, the control rod is provided with a top connection section and a retraction section, each of the clamping columns protrudes from the mounting portion and is clamped with the rod body when cooperating with the top connection section, and each of the clamping columns retracts when cooperating with the retraction section.

2. A thrust rod according to claim 1, characterized in that: The traction assembly includes a rotating column and a cam mechanism. The rotating column is rotatably installed in the control through hole, and the cam mechanism is rotatably installed in the control cavity. The rotating column passes through the cam mechanism and drives the cam mechanism to rotate in the control cavity. Guide rail grooves are arranged around the cam mechanism. The control rod extends into the guide rail groove and slides along the guide rail groove. During the rotation of the size cam mechanism, the control rod is pulled to slide along the sliding hole to change the position of the clamping section and the retracting section.

3. A thrust rod according to claim 2, characterized in that: The cam mechanism comprises two cam plates, the sides of the two cam plates are provided with snap-in grooves, the two snap-in grooves are assembled into a guide groove, the control rod is provided with a snap-in joint, the snap-in joint slides along the snap-in grooves of the two cam plates respectively, and the rotating column passes through the eccentric position of the cam plate respectively.

4. A thrust rod according to claim 2, characterized in that: A limiting ring is also provided outside the mounting portion, and the limiting ring is mounted at the position of the rotating column.

5. A thrust rod according to claim 1, characterized in that: The top-connecting section and the retreating section are connected by a smooth curve.

6. A thrust rod according to claim 1, characterized in that: The inner side of the shaft is provided with a plurality of sawtooth-shaped patterns matched with the clamping posts, and the top of each clamping post is provided with a sharp angle matched with the clamping-shaped patterns.

7. A thrust rod according to claim 1, characterized in that: The gap adjustment device includes a gap adjustment ring and a screw. The gap adjustment ring is formed by winding a strip plate. The two ends of the strip plate overlap after winding, so that the gap adjustment ring forms an overlapping area. Both ends of the strip plate are provided with tensioning holes, and the tensioning holes at both ends are staggered in the overlapping area of ​​the gap adjustment ring. The screw is installed on the joint shell and extends into the joint shell. The screw passes through the two staggered tensioning holes so that the axes of the two tensioning holes coincide.

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