CN218806090U

CN218806090U - Left knuckle arm

Info

Publication number: CN218806090U
Application number: CN202222772147.5U
Authority: CN
Inventors: 隋志毅; 秦刚
Original assignee: Shandong Shizheng Industrial Technology Co ltd
Current assignee: Shandong Shizheng Industrial Technology Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-04-07
Anticipated expiration: 2032-10-21

Abstract

The utility model discloses a left knuckle arm, including first connecting seat, second connecting seat and connect the linkage segment between first connecting seat and the second connecting seat, even ring cloth has a plurality of mounting hole on the first connecting seat, the linkage segment divide into short horizontal segment and long slope section to second connecting seat direction from first connecting seat, long slope section extends from bottom to top and backward, the second connecting seat is the thin cylinder in middle thick both ends, be provided with the pinhole of lining up from top to bottom on the axis of second connecting seat, the pinhole is big end down, the upper portion of pinhole axis is just to keeping away from forward first connecting seat direction slope sets up, the axis of pinhole forms the preceding contained angle that sets for angle alpha in the axis formation of direction and mounting hole of looking ahead, the axis of pinhole forms the right contained angle that sets for angle to be beta in the direction of looking ahead and the axis of mounting hole. The utility model has the characteristics of connect firm, improve abrasion degree and intensity and easy to assemble.

Description

Left knuckle arm

Technical Field

The utility model relates to an accessory field of car front axle, a left knuckle arm specifically says so.

Background

When the vehicle is steered, a driver applies a steering torque to a steering wheel, the torque passes through a steering shaft, a transmission shaft and a steering gear, is amplified by the steering gear, then is transmitted into a steering rocker, then is transmitted to a steering knuckle and a steering knuckle arm on the steering knuckle through a steering drag link, and finally is transmitted into a hub to deflect wheels. Therefore, the knuckle arm has the effect of connecting a drag link and a hub, the steering function is realized, during machining, the knuckle arm is forged firstly, later heat treatment reaches certain hardness, the fatigue life of parts can be prolonged by improving the hardness, but too high the toughness of original parts is too poor, in order to meet the toughness requirement, the hardness of the knuckle arm cannot be set too high, the fatigue life of the parts is shortened, the parts are replaced after being worn to a certain degree, in addition, the space of the mounting position of the knuckle arm is narrow and small, the knuckle arm is designed too thick and heavy intentionally for improving the strength and the wear resistance, materials are wasted, the installation is inconvenient, interference is easy to occur, and normal use is influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a connect firm, improve the left knuckle arm of abrasion degree and intensity and easy to assemble.

In order to solve the technical problem, the utility model discloses a first connecting seat, second connecting seat and connect the linkage segment between first connecting seat and the second connecting seat, its structural feature is: evenly the ring cloth has a plurality of mounting hole on the first connecting seat, the linkage segment divide into short horizontal segment and long slope section to second connecting seat direction from first connecting seat, long slope section extends from bottom to top and backward, the second connecting seat is the thin cylinder in middle thick both ends, be provided with the pinhole that link up from top to bottom on the axis of second connecting seat, the pinhole is big end down's taper hole, the upper portion of pinhole axis forward and to keeping away from first connecting seat direction slope sets up, the axis of pinhole forms the preceding contained angle that sets for the angle to alpha at the axis of looking sideways at direction and mounting hole, the axis of pinhole forms the right contained angle that sets for the angle to beta in the direction of looking forward and the axis of mounting hole.

Furthermore, the middle part of the first connecting seat protrudes upwards to form a limiting strip.

Further, the length of the limiting strip is equal to the width of the first connecting seat.

Furthermore, the first connecting seat, the second connecting seat and the connecting section are of an integrally formed structure.

Furthermore, alpha is 5-8 degrees, and beta is 5-8 degrees.

Furthermore, the first connecting seat is a square body, the first connecting seat protrudes downwards to form a thickened section at one side close to the short horizontal section, and a mounting hole close to the short horizontal section penetrates through the thickened section.

Furthermore, the area of projection of thickening section terminal surface is less than a quarter under the first connecting seat the lower terminal surface area of first connecting seat, the thickening section is square body and is keeping away from short horizontal segment and being close to be provided with the breach on the edge at first connecting seat edge.

Furthermore, the lower part of the short horizontal section protrudes downwards to form an arc-shaped bulge, and two ends of the arc-shaped bulge are respectively and smoothly connected with the thickened section and the long inclined section.

Furthermore, the upper part of the mounting hole is cylindrical, the lower part of the mounting hole is conical, and the axial length of the upper part of the mounting hole is smaller than that of the lower part of the mounting hole.

Furthermore, a reinforcing section with an arc-shaped outer peripheral surface is formed by the connection section and the first connection seat in an outward protruding manner.

After adopting above-mentioned structure, evenly encircle on the first connecting seat and distribute and have a plurality of mounting hole, hookup location evenly distributed during the installation avoids stress concentration to lead to first connecting seat fracture, makes to connect more firmly. First connecting seat is being close to short horizontal segment one side and is stretching the formation thickening section of downwardly protruding, the projected area of thickening section terminal surface is less than the lower terminal surface area of the first connecting seat of quarter under first connecting seat, when operation, the position atress that first connecting seat is close to the linkage segment is big, easy fracture, can improve wearing resistance and intensity through setting up the thickening section, improve the fatigue life of left knuckle arm, under the prerequisite that satisfies wearing resistance and intensity, thickening section size is as little as possible, with save material, lighten the weight of left knuckle arm as far as possible, make things convenient for the operation of left knuckle arm. The thickened section is provided with a notch to avoid interference during installation and swinging. The axis of the second connecting seat is provided with a pin hole which is communicated up and down, the pin hole is a taper hole which is small at the top and big at the bottom, and the pin hole can be quickly aligned. The axis of pinhole is looking sideways at the direction and is forming the preceding contained angle that the set angle is alpha with the axis of mounting hole to and the axis of pinhole is looking squarely the direction and is forming the right contained angle that the set angle is beta with the axis of mounting hole, just can observe the position of pinhole from one side during the installation, be convenient for from a plurality of directions to the pintle cartridge, use with the cooperation of tie rod arm simultaneously, satisfy the installation requirement. Through setting up arc arch and strengthening the section and can further improve the intensity of left knuckle arm, avoid appearing bursting apart the phenomenon because of receiving huge external force between first connecting seat and the linkage segment.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a schematic bottom view of the present invention;

FIG. 3 isbase:Sub>A schematic view of the structure in the direction A-A of FIG. 2;

FIG. 4 is a schematic view of the structure in the direction B-B of FIG. 2;

FIG. 5 is a schematic view of a portion of the structure of FIG. 2 in the direction C-C;

FIG. 6 is a schematic view of the structure of FIG. 2 in the direction D-D;

FIG. 7 is a schematic view of the structure in the direction E-E of FIG. 2;

fig. 8 is a side view, cross-sectional structural view of the present invention;

FIG. 9 is a schematic view of a portion of the structure in the direction F of FIG. 8;

in the figure: the connecting structure comprises a first connecting seat 1, a mounting hole 11, a limiting strip 12, a thickening section 13, a notch 131, a reinforcing section 14, a second connecting seat 2, a pin hole 21, a connecting section 3, a short horizontal section 31, an arc-shaped bulge 311 and a long inclined section 32.

Detailed Description

For convenience of description, the following front-back, up-down, and left-right directions are based on fig. 1, the left side of fig. 1 is left, the upper side of fig. 1 is up, and the outward direction perpendicular to the paper surface is front.

Referring to fig. 1, this left knuckle arm includes first connecting seat 1, second connecting seat 2 and connects linkage segment 3 between first connecting seat 1 and the second connecting seat 2, first connecting seat 1 is the square body, the terminal surface is similar to the square about, second connecting seat 2 is the thin cylinder in thick both ends in the middle of, first connecting seat 1, second connecting seat 2 and linkage segment 3 are the integrated into one piece structure, add the accessible casting process and carry out integrated into one piece processing man-hour, after the processing is accomplished, the foundry goods surface should be leveled, can avoid having the crack between the interconnect position like this, avoid taking place the phenomenon of rupture when receiving great external force. For convenience of installation, the vertical edge of the first connecting seat 1 is set to be a rounded corner, the horizontal cross-sectional area of the middle position of the whole first connecting seat 1 in the vertical direction is the largest, and then the horizontal cross-sectional area is gradually reduced from the middle to the two ends, so that the overall strength of the first connecting seat 1 is improved. A plurality of mounting holes 11 are uniformly and annularly distributed on the first connecting seat 1, preferably, the upper parts of the mounting holes 11 are cylindrical, the lower parts of the mounting holes 11 are conical, and the axial length of the upper parts of the mounting holes 11 is smaller than that of the lower parts of the mounting holes. The lower part of the mounting hole 11 is arranged to be conical, and during connection, the inner diameter of the lower end face of the mounting hole 11 is far larger than the outer diameter of the connecting piece, so that the position of the mounting hole 11 can be conveniently found, connection is facilitated, and the mounting efficiency is improved.

Referring to fig. 8, be provided with pinhole 21 that link up from top to bottom on the axis of second connecting seat 2, pinhole 21 is big end down's taper hole, and during the specific processing, the tapering of pinhole 21 is 1. The upper portion of pinhole 21 axis is forward and to keeping away from the slope of first connecting seat 1 direction setting, and is concrete, and the axis of pinhole 21 looks sideways at the axis of side direction and the axis of mounting hole 11 and forms the preceding contained angle that the set angle is alpha, and the axis of pinhole 21 is shown with X, and the axis of mounting hole 11 is shown with Y, for convenient representation with the axis translation of mounting hole 11 to the axis position of pinhole 21 and finally form the preceding contained angle that the set angle is alpha with the axis of pinhole 21, the operation of left knuckle arm can be influenced to preceding contained angle too big, has increased the processing degree of difficulty simultaneously. Preferably, α is 5 ° to 8 °, with an optimum angle of 6 °. Referring to fig. 9, the axis of the pin hole 21 forms a right angle of a set angle β with the axis of the mounting hole 11 in the front view direction, and likewise, for convenience of description, the axis of the mounting hole 11 is translated to the position of the axis of the pin hole 21 and finally forms a right angle of a set angle β with the axis of the pin hole 21, β being 5 ° to 8 °, and the optimum angle being 6 °. The second connecting seat 2 is obliquely arranged, the upper end face and the lower end face of the second connecting seat are inclined planes on the premise of meeting working requirements, the position of the pin hole 21 can be observed from one side, the second connecting seat can be installed in multiple directions, and the problem that the installation problem is influenced by the fact that the pin hole 12 cannot be seen from a certain position due to the fact that the space of the left steering knuckle arm is narrow and small or other parts are shielded is avoided.

Referring to fig. 2, the mounting holes 11 are uniformly distributed in a ring shape, the mounting holes 11 in corresponding quantity can be arranged according to specific conditions during use, and the first connecting seat 1 can be prevented from being broken due to stress concentration due to equidistant arrangement, so that connection is more stable. In order to further improve the strength of the first connecting seat 1, the middle part of the first connecting seat 1 protrudes upwards to form a limiting strip 12, the limiting strip 12 is arranged left and right, and the end part of the limiting strip 12 coincides with the end part of the first connecting seat 1, namely the length of the limiting strip 12 is equal to the width of the first connecting seat 1, so that the strength of the central position of the first connecting seat 1 is improved.

Referring to fig. 1 and 2, the connection section 3 is divided into a short horizontal section 31 and a long inclined section 32 from the first connection seat 1 to the second connection seat 2, and the long inclined section 32 extends from bottom to top and backwards. Referring to fig. 6 and 7, the width and thickness of the long inclined section 32 are gradually reduced at a small amplitude from the first connecting seat 1 to the second connecting seat 2, and the width and thickness of the connecting position with the short horizontal section 31 are maximized, so as to improve the strength of the left knuckle arm, preferably, the first connecting seat 1 protrudes downward at a side near the short horizontal section 31 to form a thickened section 13, and one mounting hole 11 near the short horizontal section 31 passes through the thickened section 13. The provision of the thickened section 13 further improves the strength of the left knuckle arm and improves the degree of wear resistance. Referring to fig. 2, the projected area of the thickened section 13 on the lower end face of the first connecting seat 1 is smaller than the area of the lower end face of the quarter of the first connecting seat 1, the thickened section 13 is a square body, and a notch 131 is arranged on an edge far away from the short horizontal section 31 and close to the edge of the first connecting seat 1. The thickened section 13 is only arranged around the mounting hole 11 close to the short horizontal section 31, so that the strength and the wear resistance of the left knuckle arm are met, the material can be saved, the weight of the left knuckle arm is reduced as much as possible, and when the automobile steering wheel is in operation, the contact part of the short horizontal section 31 and the long inclined section 32 and the contact part of the short horizontal section 31 and the first connecting seat 1 are the highest in strength, so that the phenomenon of crack or bending is easy to occur.

Claims

1. The utility model provides a left knuckle arm, includes first connecting seat (1), second connecting seat (2) and connects linkage segment (3) between first connecting seat (1) and second connecting seat (2), characterized by: evenly the ring cloth has a plurality of mounting hole (11) on first connecting seat (1), linkage segment (3) divide into short horizontal segment (31) and long slope section (32) to second connecting seat (2) direction from first connecting seat (1), long slope section (32) extend from bottom to top and backward, second connecting seat (2) are the thin cylinder in middle thick both ends, pinhole (21) that link up from top to bottom are provided with on the axis of second connecting seat (2), pinhole (21) are big taper hole down, the upper portion of pinhole (21) axis is just keeping away from forward first connecting seat (1) direction slope sets up, the axis of pinhole (21) is looking sideways at the axis formation of direction and mounting hole (11) and is set for the preceding contained angle that the angle is alpha, the axis of pinhole (21) forms the right contained angle that the angle is beta at the axis of orthographic direction and mounting hole (11).

2. The left track arm as set forth in claim 1, wherein: the middle part of the first connecting seat (1) protrudes upwards to form a limiting strip (12).

3. The left track arm as set forth in claim 2, wherein: the length of the limiting strip (12) is equal to the width of the first connecting seat (1).

4. The left track arm as set forth in claim 1, wherein: the first connecting seat (1), the second connecting seat (2) and the connecting section (3) are of an integrally formed structure.

5. The left track arm as set forth in claim 1, wherein: alpha is 5-8 degrees and beta is 5-8 degrees.

6. The left track arm as set forth in claim 1, wherein: the first connecting seat (1) is a square body, one side of the first connecting seat (1) close to the short horizontal section (31) protrudes downwards to form a thickened section (13), and a mounting hole (11) close to the short horizontal section (31) penetrates through the thickened section (13).

7. The left track arm as set forth in claim 6, wherein: thickened section (13) is in the projected area of terminal surface is less than the quarter under first connecting seat (1) lower terminal surface area of first connecting seat (1), thickened section (13) are square body and keeping away from short horizontal segment (31) and being close to be provided with breach (131) on the edge at first connecting seat (1) edge.

8. The left track arm as set forth in claim 6, wherein: the lower part of the short horizontal section (31) protrudes downwards to form an arc-shaped bulge (311), and two ends of the arc-shaped bulge (311) are respectively connected with the thickened section (13) and the long inclined section (32) in a smooth mode.

9. The left track arm as set forth in claim 1, wherein: the upper portion of the mounting hole (11) is cylindrical, the lower portion of the mounting hole is conical, and the axial length of the upper portion of the mounting hole (11) is smaller than that of the lower portion of the mounting hole.

10. The left track arm as set forth in any one of claims 1 through 9, wherein: and a reinforcing section (14) with an arc-shaped outer peripheral surface is formed by the connection section (3) and the first connecting seat (1) in a protruding and extending mode.