Elastic self-tightening type automobile steering pull rod

Abstract

The elastic self-tightening type automobile steering pull rod comprises a pull rod body and a ball head assembly, the ball head assembly comprises a connector, a ball head body, a limiting pad, a pressurizing piece and an end cover, the ball head body comprises a working end and a connecting end, the working end is located in a containing cavity in the connector, and the connecting end is located in a containing cavity in the connecting end. The top end of the connecting end is connected with the working end, the bottom end of the connecting end extends out of the connector along a bottom opening of the containing cavity, the end cover is fixed to the top end of the connector and seals the top opening of the containing cavity, and the pressurizing piece comprises a pressurizing bolt, a pressing plate and a spring. The pressurizing bolt is fixed to the center of the end cover in a threaded mode, the bottom end of a screw rod is rotatably fixed in the pressing plate, the pressing plate and the limiting pad are arranged in the containing cavity up and down, the springs are vertically fixed to the adjacent faces of the pressing plate and the limiting pad respectively, the working end can obtain enough elastic abutting, gaps are reduced, and the working efficiency is improved. And the tight fit between the pressing plate and the placing cavity is kept.

Description

Technical Field

[0001] The invention relates to the technical field of steering rods, in particular to the technical field of elastic self-tightening automobile steering rods. Background Art

[0002] The steering rod is the main component of a car that realizes the steering function of the whole vehicle. It is the connecting component that connects the traction arm steering mechanism. People use the steering rod to drive the wheels on one side to steer, thereby realizing the steering of the whole vehicle. The steering rod is mainly composed of the rod body and the ball head assemblies located at the axial ends of the rod body.

[0003] Chinese patent CN206664692U proposes a car side steering rod and a car, including a left bushing, a left ball head, a connecting rod, a right bushing, and a right ball head. One end of the connecting rod is detachably fixedly connected to the left ball head, and the other end of the connecting rod is detachably fixedly connected to the right ball head. Since both ends of the connecting rod are detachably fixedly connected to the left ball head and the right ball head, when the left bushing or the right bushing is damaged, only the right ball head or the left ball head needs to be replaced, and there is no need to replace the connecting rod, which saves costs.

[0004] Although this solution is convenient for replacement, during use, the working end located in the ball head assembly needs sufficient elastic pressure to resist it so that the pull rod has better linkage force and more flexible operability; however, the elastic force of the spring located in the ball head assembly will weaken after long-term use, so that the working end does not get sufficient elastic resistance, resulting in a larger gap and a loose fit with the joint of the ball head assembly, which in turn causes the car's steering to become ineffective and the car's steering to drift, posing a major safety hazard. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the prior art and to propose an elastic self-tightening automobile steering rod, which can provide the working end with sufficient elastic resistance, reduce the gap, maintain a close fit with the placement cavity, and thus avoid the occurrence of problems such as automobile steering drifting.

[0006] To achieve the above-mentioned objectives, the present invention proposes an elastic self-tightening automobile steering rod, comprising a rod body and a ball head assembly, the ball head assembly comprising a joint, a ball head body, a limit pad, a pressure piece and an end cover, the ball head body comprising a working end and a connecting end, the working end being located in a placement cavity in the joint, the top end of the connecting end being connected to the working end and the bottom end extending out of the joint along the bottom opening of the placement cavity, the end cover being fixed to the top end of the joint and closing the top opening of the placement cavity, the pressure piece comprising a pressure bolt, a pressure plate and a spring, the pressure bolt being threadedly fixed in the center of the end cover and the bottom end of the screw being rotatably fixed in the pressure plate, the pressure plate and the limit pad being arranged one above and one below in the placement cavity, and a number of the springs being vertically fixed on adjacent surfaces of the pressure plate and the limit pad, the left and right ends of the rod body being respectively connected to one end of the joint and perpendicular to the connecting end.

[0007] Preferably, the limiting pad includes a pad ring and a pad plate, the bottom surface of the pad ring is provided with an arc surface adapted to the working end, and the pad plate is located above the pad ring.

[0008] Preferably, a limiting washer is provided between the gasket and the gasket plate.

[0009] Preferably, slide grooves are provided on the left and right sides of the placement cavity, and the left and right ends of the pad and the pressure plate are slidably connected in the slide grooves.

[0010] Preferably, a blind hole is provided in the center of the top surface of the pressure plate, a side chamber is provided on the inner wall of the blind hole, a bearing is provided in the side chamber, and the bottom end of the screw of the pressure bolt is rotatably connected in the blind hole through the bearing.

[0011] Preferably, a sleeve is provided outside the spring, the bottom end of the sleeve is fixed to the top surface of the limiting pad and the top end extends into the annular groove on the bottom surface of the pressure plate.

[0012] Preferably, a sinking cavity is provided at the top of the joint, and the end cover is placed in the sinking cavity. Several groups of corresponding cavity threaded holes and cover threaded holes are respectively provided on the platform of the sinking cavity and the end cover. Several groups of cavity threaded holes and cover threaded holes are respectively threadedly connected with fastening bolts to fix the end cover to the top of the joint.

[0013] Preferably, a dust cover is further included, which is sleeved outside the connecting end. A card slot is provided on the bottom surface of the connector, and a card head is provided on the outer edge of the dust cover and is clamped in the card slot.

[0014] The beneficial effects of the present invention are as follows: the present invention provides a pressure piece on the limit pad, thereby indirectly compressing the working end of the ball head body, so that the working end obtains sufficient elastic resistance, reduces the gap, maintains a close fit with the placement cavity, thereby avoiding the occurrence of problems such as car steering drifting, and reducing the safety hazards of the car during normal operation; by providing a pressure bolt threadedly connected to the end cover, the pressure bolt drives the pressure plate at the bottom end of its screw rod to descend during the rotation of the thread, forcing several springs located on the bottom surface of the pressure plate to shrink and deform, thereby utilizing the pad to compress the ball body, the pressure intensity is easy to adjust, and the service life of the ball head assembly can be effectively improved; by providing a sleeve outside the spring, the spring is prevented from deforming and bending to the side when under force, thereby ensuring the pressure effect; by providing a slide groove in the side wall of the placement cavity, the smoothness of the pressure plate and the pad when moving up and down is guaranteed.

[0015] The features and advantages of the present invention will be described in detail through embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of an elastic self-tightening automobile steering tie rod of the present invention; Figure 2 This is a front sectional view of a ball head assembly of an elastic self-tightening automobile steering tie rod according to the present invention; Figure 3 This is a front sectional view of a joint of an elastic self-tightening automobile steering tie rod according to the present invention; Figure 4 The present invention is a main sectional view of a pressure member of an elastic self-tightening automobile steering tie rod.

[0017] In the figure: 1-pull rod body, 2-ball head assembly, 21-joint, 211-placement cavity, 212-slide groove, 213-sinking cavity, 214-cavity threaded hole, 215-slot, 22-ball head body, 221-working end, 222-connecting end, 23-limiting pad, 231-gasket, 232-gasket, 233-limiting washer, 24-pressure piece, 241-pressure bolt, 242-pressure plate, 2421-blind hole, 2422-side chamber, 2423-annular groove, 243-spring, 244-bearing, 245-sleeve, 25-end cover, 251-cover threaded hole, 26-fastening bolt, 27-dust cover. DETAILED DESCRIPTION

[0018] See Figures 1 to 4The present invention relates to an elastic self-tightening automobile steering tie rod, comprising a tie rod body 1 and a ball head assembly 2, wherein the ball head assembly 2 comprises a joint 21, a ball head body 22, a limiting pad 23, a pressure piece 24 and an end cover 25, wherein the ball head body 22 comprises a working end 221 and a connecting end 222, wherein the working end 221 is located in a placement cavity 211 in the joint 21, the top end of the connecting end 222 is connected to the working end 221 and the bottom end thereof extends out of the joint 21 along the bottom opening of the placement cavity 211, and the end cover 25 is fixed to the top end of the joint 21 and The top opening of the placement chamber 211 is closed, and the pressure member 24 includes a pressure bolt 241, a pressure plate 242 and a spring 243. The pressure bolt 241 is threadedly fixed to the center of the end cover 25 and the bottom end of the screw can be rotatably fixed in the pressure plate 242. The pressure plate 242 and the limit pad 23 are arranged one above and one below in the placement chamber 211. Several springs 243 are vertically fixed on the adjacent surfaces of the pressure plate 242 and the limit pad 23. The left and right ends of the pull rod body 1 are respectively connected to one end of the joint 21 and perpendicular to the connecting end 222.

[0019] See Figure 2 The limiting pad 23 includes a pad ring 231 and a pad plate 232. The bottom surface of the pad ring 231 is provided with an arc surface adapted to the working end 221. The pad plate 232 is located above the pad ring 231. A limiting washer 233 is further provided between the pad ring 231 and the pad plate 232.

[0020] See Figure 3 The left and right sides of the placement cavity 211 are respectively provided with sliding grooves 212, and the left and right ends of the pad 232 and the pressure plate 242 are respectively slidably connected in the sliding grooves 212.

[0021] See Figure 4 A blind hole 2421 is provided in the center of the top surface of the pressure plate 242. A side chamber 2422 is provided on the inner wall of the blind hole 2421. A bearing 244 is provided in the side chamber 2422. The bottom end of the screw of the pressure bolt 241 is rotatably connected to the blind hole 2421 via the bearing 244. A sleeve 245 is also sleeved outside the spring 243. The bottom end of the sleeve 245 is fixed to the top surface of the limit pad 23, while the top end extends into the annular groove 2423 located on the bottom surface of the pressure plate 242.

[0022] See Figure 3 The top of the joint 21 is provided with a sinking cavity 213, and the end cover 25 is placed in the sinking cavity 213. Several groups of corresponding cavity threaded holes 214 and cover threaded holes 251 are respectively provided on the platform of the sinking cavity 213 and the end cover 25. Several groups of the cavity threaded holes 214 and cover threaded holes 251 are respectively threadedly connected with fastening bolts 26 to fix the end cover 25 to the top of the joint 21.

[0023] See Figure 2 , and also includes a dust cover 27, which is sleeved outside the connecting end 222. The bottom surface of the connector 21 is provided with a card slot 215, and the outer edge of the dust cover 27 is provided with a card head and is clamped in the card slot 215.

[0024] Working process of the present invention: As needed, the pressure bolt 241 is directly rotated with a wrench, gradually driving the pressure plate 242 downward during rotation, thereby contracting the compression spring 243. The compression spring 243 uses its elastic force to press the backing plate 232 downward, which in turn, through the limiting washer 233, causes the backing ring 231 to press downward on the working end 221 of the ball head body 22, providing sufficient elastic resistance to the working end 221, reducing the gap and maintaining a tight fit with the placement cavity 211.

[0025] The present invention provides a pressure piece on the limit pad, thereby indirectly compressing the working end of the ball head body, so that the working end obtains sufficient elastic resistance, reduces the gap, maintains a close fit with the placement cavity, and thus avoids the occurrence of problems such as car steering drifting, and reduces the safety hazards of the car during normal operation; by providing a pressure bolt threadedly connected to the end cover, the pressure bolt drives the pressure plate at the bottom end of its screw rod to descend during the rotation of the thread, forcing several springs located on the bottom surface of the pressure plate to shrink and deform, thereby using the pad to compress the ball body, the pressure intensity is easy to adjust, and the service life of the ball head assembly can be effectively improved; by providing a sleeve outside the spring, the spring is prevented from deforming and bending to the side when under force, thereby ensuring the pressure effect; by providing a slide groove in the side wall of the placement cavity, the smoothness of the pressure plate and the pad when moving up and down is guaranteed.

[0026] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. An elastic self-tightening automobile steering tie rod, characterized in that: The invention comprises a pull rod body (1) and a ball head assembly (2), wherein the ball head assembly (2) comprises a joint (21), a ball head body (22), a limiting pad (23), a pressure piece (24) and an end cover (25), wherein the ball head body (22) comprises a working end (221) and a connecting end (222), wherein the working end (221) is located in a placement cavity (211) in the joint (21), wherein the top end of the connecting end (222) is connected to the working end (221) and the bottom end thereof extends out of the joint (21) along the bottom opening of the placement cavity (211), and the end cover (25) is fixed to the top end of the joint (21) and closes the placement cavity. The top of (211) is open, and the pressure member (24) includes a pressure bolt (241), a pressure plate (242) and a spring (243). The pressure bolt (241) is threadedly fixed in the center of the end cover (25) and the bottom end of the screw can be rotatably fixed in the pressure plate (242). The pressure plate (242) and the limit pad (23) are arranged one above and one below in the placement cavity (211). A plurality of springs (243) are vertically fixed on the adjacent surfaces of the pressure plate (242) and the limit pad (23). The left and right ends of the pull rod body (1) are respectively connected to one end of the joint (21) and perpendicular to the connecting end (222).

2. The elastic self-tightening automobile steering tie rod according to claim 1, characterized in that: The limiting pad (23) comprises a pad ring (231) and a pad plate (232); the bottom surface of the pad ring (231) is provided with an arc surface adapted to the working end (221); and the pad plate (232) is located above the pad ring (231).

3. The elastic self-tightening automobile steering tie rod according to claim 2, characterized in that: A limiting washer (233) is further provided between the backing ring (231) and the backing plate (232).

4. The elastic self-tightening automobile steering tie rod according to claim 2, characterized in that: Slide grooves (212) are respectively provided on the left and right sides of the placement cavity (211), and the left and right ends of the pad (232) and the pressure plate (242) are respectively slidably connected in the slide grooves (212).

5. The elastic self-tightening automobile steering tie rod according to claim 1, characterized in that: A blind hole (2421) is provided at the center of the top surface of the pressure plate (242), a side chamber (2422) is provided on the inner wall of the blind hole (2421), a bearing (244) is provided in the side chamber (2422), and the bottom end of the screw of the pressure bolt (241) is rotatably connected to the blind hole (2421) via the bearing (244).

6. The elastic self-tightening automobile steering tie rod according to claim 1, characterized in that: A sleeve (245) is sleeved outside the spring (243), wherein the bottom end of the sleeve (245) is fixed to the top surface of the limiting pad (23) and the top end extends into the annular groove (2423) located on the bottom surface of the pressure plate (242).

7. The elastic self-tightening automobile steering tie rod according to claim 1, characterized in that: The top of the joint (21) is provided with a sinking cavity (213), and the end cover (25) is placed in the sinking cavity (213). The platform of the sinking cavity (213) and the end cover (25) are respectively provided with a plurality of corresponding cavity threaded holes (214) and cover threaded holes (251). Fastening bolts (26) are respectively threadedly connected in the plurality of cavity threaded holes (214) and cover threaded holes (251), thereby fixing the end cover (25) to the top of the joint (21).

8. An elastic self-tightening automobile steering tie rod according to any one of claims 1 to 7, characterized in that: It also includes a dust cover (27), which is sleeved outside the connecting end (222). The bottom surface of the connector (21) is provided with a card slot (215), and the outer edge of the dust cover (27) is provided with a card head and is clamped in the card slot (215).

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