CN213862404U - Steering knuckle arm - Google Patents

Abstract

The utility model provides a knuckle arm, including steering column and drag link, the upper end of steering column is equipped with the pillow block, the pillow block pinhole has been seted up on the pillow block, the lower extreme of steering column from the pillow block to the steering column is to the rear end distortion setting of violently, the upper end of drag link is equipped with connecting portion, the drag link is from the lower extreme of connecting portion to the drag link to the lower extreme of violently front end distortion setting and drag link and the lower extreme rounding off connection of steering column, the horizontal rear side of drag link and the horizontal front side of steering column constitute the arcwall face, the connecting hole that is used for connecting is offered to the lower extreme of drag link, the connecting hole includes the shoulder hole and the connecting pin hole that set up along the longitudinal direction of drag link, the shoulder hole is big-end-up, the connecting pin hole includes pinhole and lower pin hole, the connecting pin hole wall is from last rounding off to lower pin hole. The utility model has the advantages of simple structure, the installation of can being convenient for, avoid the high technological effect of stress concentration barrier propterty.

Description

Steering knuckle arm

Technical Field

The utility model relates to a knuckle arm.

Background

In the prior art, a steering transmission mechanism of a front axle of a vehicle includes a knuckle, a knuckle arm, and a trapezoidal arm. Wherein, knuckle arm and trapezoidal arm are connected on the knuckle, and the tie rod is connected with trapezoidal arm, and turns to the tie rod and be connected with the knuckle arm, through turning to the tie rod with the power of vehicle steering gear output on the knuckle arm conveying to the knuckle, the knuckle rethread trapezoidal arm with power transmission to the tie rod to realize turning to of wheel.

When an existing knuckle arm is installed, the existing knuckle arm is easily interfered by other parts, and due to the fact that the installation environment is narrow, the installation and fixation of a tie rod can be affected by the other parts, and meanwhile stress concentration can occur to cause damage to the tie rod.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to above problem, provide one kind and can be convenient for install, avoid other parts to interfere, avoid the knuckle arm that stress concentration barrier propterty is high simultaneously.

In order to solve the technical problem, the utility model comprises a steering rod and a cross rod, and is structurally characterized in that the upper end of the steering rod is provided with a bearing platform, the bearing platform is provided with a bearing platform pin hole, the steering rod is twisted from the bearing platform to the lower end of the steering rod towards the transverse rear end, the upper end of the cross rod is provided with a connecting part, the cross rod is twisted from the connecting part to the lower end of the cross rod towards the transverse front end, the lower end of the cross rod is smoothly transited to the lower end of the steering rod, the transverse rear side of the cross rod and the transverse front side of the steering rod form an arc surface, the lower end of the cross rod is provided with a connecting hole for connection, the connecting hole comprises a stepped hole and a connecting pin hole which are arranged along the longitudinal direction of the cross rod, the outside of the stepped hole is big and the inside of the stepped hole is small, the connecting pin hole comprises an upper pin hole arranged at the end surface of the small hole of the stepped hole and a lower pin hole arranged at the longitudinal rear end surface of the cross rod, the wall of the connecting pin hole is smoothly transited to the lower pin hole from the upper pin hole.

After the structure is adopted, when the knuckle arm rotates, some parts are arranged in the transverse direction of the steering rod and the tie rod, the steering rod is arranged from the bearing platform to the lower end of the steering rod in a twisting way towards the transverse rear end, the tie rod is arranged from the connecting part to the lower end of the tie rod in a twisting way towards the transverse front end, the steering rod and the tie rod have certain horizontal height difference, the arrangement avoids the interference of other parts, the rotating angle is larger, so that more working requirements are met, the steering rod is fixed through the bearing platform, the tie rod is fixed through the connecting hole in the tie rod, the stepped hole of the connecting hole is compared with the connecting pin hole, when the tie rod is connected with the bolt, when the bolt is stressed, the bolt can apply force to the inner wall of the connecting pin hole, the outer wall of the connecting pin hole is easy to crack, so that the phenomenon of disconnection is caused, and the stress of the stepped hole is relatively uniform, when the outer wall of the stepped hole is cracked, the fixation of the bolt cannot be influenced; the connecting pin hole is arranged at the moment, firstly, the connecting bolt is convenient to insert, and the matching between the connecting bolt and the connecting pin hole is clearance matching, so that the stress is prevented from being transferred to the inner wall of the connecting pin hole as soon as the connecting bolt is stressed; thereby connecting bolt transmission power and rotating to the tie rod knuckle arm, the not equidimension setting of connecting pin hole is convenient for connecting bolt's cartridge, when connecting bolt cartridge to connecting pin hole, connecting bolt's cartridge direction can be a plurality of, because the pinhole of tie rod upper end is the pinhole, be convenient for connecting bolt's cartridge and the processing of connecting pin hole, change the direction again when connecting bolt inserts connecting pin hole and make connecting bolt penetrate connecting pin hole, wear out from the pinhole department on the vertical front end of tie rod, thereby fix the knuckle arm, thereby connecting bolt's bolt head can be placed in the step downthehole and keep the level and smooth of the vertical terminal surface of tie rod, avoid being interfered by other parts, reached and to have been convenient for install, avoid the technological effect that stress concentration barrier propterty can be high.

The lower pin hole is provided with a positioning boss protruding towards the longitudinal rear end of the tie rod.

The aperture of the lower pin hole is positioned between the apertures of the upper pin hole and the stepped hole.

The boss pin hole comprises a front pin hole arranged at the longitudinal front end of the boss and a rear pin hole arranged at the longitudinal rear end of the boss, the aperture of the front pin hole is smaller than that of the rear pin hole, and the wall of the boss pin hole is in smooth transition from the front pin hole to the rear pin hole.

The connecting part comprises a fastening section and a conical section which are sequentially arranged from top to bottom, a conical sleeve can be sleeved on the conical section, and a fastening nut is connected to the fastening section.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic top view of the structure of FIG. 1;

FIG. 3 is a schematic left side view of the structure of FIG. 1;

FIG. 4 is a schematic view of the structure in the direction C-C of FIG. 1;

in the figure: 1-steering rod, 2-tie rod, 3-pillow block, 4-pillow block pin hole, 5-connecting part, 6-fastening section, 7-taper section, 8-connecting hole, 9-stepped hole, 10-connecting pin hole, 11-upper pin hole and 12-lower pin hole.

Detailed Description

For convenience of description, the left side in fig. 1 is taken as the horizontal front, the upper side is taken as the upper side, and the direction perpendicular to the paper surface is taken as the longitudinal front. Referring to fig. 1-4, the knuckle arm comprises a steering rod 1 and a tie rod 2, a boss 3 is arranged at the upper end of the steering rod 1, a boss pin hole 4 is formed in the boss 3, the boss pin hole 4 comprises a front pin hole formed in the longitudinal front end of the boss 3 and a rear pin hole formed in the longitudinal rear end of the boss 3, the diameter of the front pin hole is smaller than that of the rear pin hole, the wall of the boss pin hole 4 is in smooth transition from the front pin hole to the rear pin hole, the boss pin hole 4 is arranged at the moment and is firstly convenient to insert a pin shaft, and the pin shaft is in clearance fit with the boss pin hole 4 to prevent the inner wall of the boss pin hole 4 from transmitting stress once the pin shaft is stressed. The steering rod 1 is arranged from the pillow block 3 to the lower end of the steering rod 1 in a twisting mode towards the transverse rear end, the twisting mode is shown in the figure 1, the steering rod 1 is arranged in a downward bending mode from the transverse front end to the transverse rear end, the connection portion 5 is arranged at the upper end of the cross pull rod 2, the connection portion 5 comprises a fastening section 6 and a conical section 7, the conical section 7 is sleeved with a conical sleeve, and the fastening section 6 is connected with a fastening nut. The tie rod 2 is twisted from the connecting part 5 to the lower end of the tie rod 2 to the transverse front end and the lower end of the tie rod 2 is smoothly transited to the lower end of the steering rod 1, the twisting arrangement is as shown in figure 1, the tie rod 2 is bent from the upper end to the lower end to the transverse rear end, as shown in figure 2, the tie rod 2 is bent from the transverse rear end to the transverse front end to the longitudinal rear end, the twisting arrangement can ensure that the tie rod 2 is prevented from being interfered by other components when being installed, the transverse rear side of the tie rod 2 and the transverse front side of the steering rod 1 form an arc-shaped surface, the arc-shaped surface is protruded downwards, namely, the knuckle arm is prevented from being interfered by other components when being installed, the installation space is enlarged, the connection and normal operation of the steering rod 1 and the tie rod 2 are ensured, as shown in figure 4, the lower end of the tie rod 2 is provided with a connecting hole 8 for connection, a connecting bolt passes through the connecting hole 8 and is fixed on other components, thereby realizing the fixation of the tie rod 2, connecting hole 8 includes shoulder hole 9 and connecting pin hole 10 that set up along the longitudinal direction of drag link 2, shoulder hole 9 is big-end-up, little in, the bolt head of connecting bolt can be placed to shoulder hole 9, thereby guarantee leveling of the vertical preceding terminal surface of drag link 2 and avoid the interference of other parts, connecting pin hole 10 is including the last pinhole 11 of seting up in the aperture terminal surface of shoulder hole 9 and seting up in the lower pinhole 12 on the vertical rear end surface of drag link 2, the aperture of lower pinhole 12 is in between the aperture of pinhole 11 and shoulder hole 9 apertures, lower pinhole 12 is equipped with the bellied location boss of the vertical rear end of drag link 2, connecting pin hole 10 wall is from last pinhole 11 rounding off to lower pinhole 12. The connection pin hole 10 is arranged at this moment, firstly, the connection bolt is convenient to insert, the connection bolt is in clearance fit with the connection pin hole 10, and stress is prevented from being transferred to the inner wall of the connection pin hole 10 when the connection bolt is stressed.

When the utility model is used, when the knuckle arm rotates, some parts are arranged on the transverse direction of the steering rod 1 and the tie rod 2, because the steering rod 1 is twisted from the lower end of the pillow block 3 to the steering rod 1 to the transverse rear end and the tie rod 2 is twisted from the connecting part 5 to the lower end of the tie rod 2 to the transverse front end, the steering rod 1 and the tie rod 2 have a certain horizontal height difference, the arrangement avoids the interference of other parts, the rotating angle is larger, thereby adapting to more working requirements, wherein the steering rod 1 is fixed through the pillow block 3, the tie rod 2 is fixed through the connecting hole 8 on the tie rod 2, the stepped hole 9 of the connecting hole 8 is compared with the connecting pin hole 10, when the connecting with the bolt is connected, when the bolt is stressed, the bolt can apply force to the inner wall of the connecting pin hole 10, the outer wall of the connecting pin hole 10 is easy to crack, thereby causing the disconnection phenomenon, the stress of the stepped hole 9 is relatively uniform, and the fixation of the bolt cannot be influenced when the outer wall of the stepped hole 9 cracks; the connecting pin hole 10 is arranged at the moment, firstly, the connecting bolt is convenient to insert, the matching between the connecting bolt and the connecting pin hole 10 is clearance matching, and the stress is prevented from being transferred to the inner wall of the connecting pin hole 10 when the connecting bolt is stressed; thereby connecting bolt transmission power to tie rod 2 rotates knuckle arm, the not uniform in size of connecting pin hole 10 sets up the cartridge of the connecting bolt of being convenient for, when connecting bolt cartridge to connecting pin hole 10, connecting bolt's cartridge direction can be a plurality of, the cartridge of the connecting bolt of being convenient for and the processing of connecting pin hole 10, change the direction again when connecting bolt inserts connecting pin hole 10 and make connecting bolt penetrate connecting pin hole 10, from tie rod 2 indulge wear out to pinhole 12 department under the rear end, thereby fix knuckle arm, thereby connecting bolt's bolt head can be placed in the step downthehole and keep the level and smooth of the vertical terminal surface of tie rod 2, avoid being interfered by other parts, reached and to have been convenient for install, avoid the high technological effect of stress concentration barrier propterty.

Claims (5)

1. The utility model provides a knuckle arm, includes steering column (1) and drag link (2), its characterized in that the upper end of steering column (1) is equipped with pillow block (3), pillow block pinhole (4) have been seted up on pillow block (3), steering column (1) from pillow block (3) to the lower extreme of steering column (1) is to the distortion of horizontal rear end setting, the upper end of drag link (2) is equipped with connecting portion (5), drag link (2) from connecting portion (5) to the distortion of the lower extreme of drag link (2) is just the lower extreme rounding off of drag link (2) is to the lower extreme of steering column (1), the horizontal rear side of drag link (2) with the horizontal front side of steering column (1) constitutes the arcwall face, connecting hole (8) for connecting are seted up to the lower extreme of drag link (2), connecting hole (8) include along shoulder hole (9) and connecting pinhole (10) that the longitudinal direction of drag link (2) set up The outer portion of the stepped hole (9) is large, the inner portion of the stepped hole is small, the connecting pin hole (10) comprises an upper pin hole (11) formed in the end face of the small hole of the stepped hole (9) and a lower pin hole (12) formed in the longitudinal rear end face of the tie rod (2), and the wall of the connecting pin hole (10) is in smooth transition from the upper pin hole (11) to the lower pin hole (12).

2. The knuckle arm according to claim 1, wherein the lower pin hole (12) is provided with a positioning boss protruding toward the longitudinally rear end of the tie rod (2).

3. Knuckle arm according to claim 1, wherein the diameter of the lower pin hole (12) is located between the diameter of the upper pin hole (11) and the diameter of the stepped hole (9).

4. The knuckle arm according to claim 1, wherein said pillow block pin hole (4) comprises a front pin hole opened at a front longitudinal end of said pillow block (3) and a rear pin hole opened at a rear longitudinal end of said pillow block (3), said front pin hole having a smaller diameter than said rear pin hole, and said pillow block pin hole (4) having a wall smoothly transitioning from said front pin hole to said rear pin hole.

5. The knuckle arm according to claim 1, wherein the connecting portion (5) comprises a fastening section (6) and a tapered section (7) sequentially arranged from top to bottom, the tapered section (7) can be sleeved with a tapered sleeve, and the fastening section (6) is connected with a fastening nut.

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