CN211765839U - Automobile electric steering gear nut with reversing groove chamfer - Google Patents
Automobile electric steering gear nut with reversing groove chamfer Download PDFInfo
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- CN211765839U CN211765839U CN202020026669.9U CN202020026669U CN211765839U CN 211765839 U CN211765839 U CN 211765839U CN 202020026669 U CN202020026669 U CN 202020026669U CN 211765839 U CN211765839 U CN 211765839U
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Abstract
The utility model relates to an auto electric steering ware nut with switching-over groove chamfer, this nut include cylinder body (1), and this cylinder body (1) inner wall is equipped with spiral circular arc track (2), the lateral wall of cylinder body (1) on all be equipped with one and run through the inner wall of cylinder body and turning to waist type groove (3) of outer wall. Compared with the prior art, the utility model discloses nut switching-over groove chamfer improves steel ball roll precision and product property ability in the circular arc track.
Description
Technical Field
The utility model belongs to the technical field of the automobile parts technique and specifically relates to an automobile electric steering gear nut with switching-over groove chamfer is related to.
Background
The nut of the automobile electric steering gear is used for being assembled with the ball screw type rack through the steel ball, and the steel ball realizes circular rolling in the nut and the ball screw type rack through a steering block arranged in a steering groove on the excircle of the nut. The existing nut of the automobile electric steering gear has the defects of higher requirement on the proficiency of workers and operation, unsatisfactory assembling effect and precision, low qualification rate of one-time assembling rate and low assembling efficiency, so that the service life of the nut and the ball screw type rack is influenced.
Patent application 201910308879.9 discloses an auto electric steering ware nut, this nut include cylinder body, cylinder body's outer wall is smooth, and cylinder body's inner wall is equipped with spiral circular arc track, all be equipped with one on the lateral wall at cylinder body's both ends and run through the inner wall of cylinder body and the square groove that turns to of outer wall, two are turned to and are equipped with a straight flute on the cylinder body outer wall between the square groove, the straight flute is parallel with cylinder body's axis. This patent application passes through the nut fixed direction when the assembly, improves assembly precision and product property ability, but the ball is dead in the rolling in-process of switching-over inslot card easily, in case there is iron to cut or the oil stain entering switching-over inslot, blocks up the passageway more easily, leads to the unable circulation of ball to roll, causes the nut to scrap.
Disclosure of Invention
The utility model aims at providing an automobile electric steering gear nut that easily installs, less condemned have a switching-over groove chamfer in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme: the utility model provides an auto electric steering ware nut with switching-over groove chamfer, this nut includes the cylinder body, and this cylinder body inner wall is equipped with spiral circular arc track, its characterized in that, the lateral wall of cylinder body on all be equipped with one and run through the inner wall of cylinder body and the waist-shaped groove that turns to of outer wall.
The spiral arc track and the inner wall are turned to the groove chamfer between the waist grooves (see the chamfer size C0.4+/-0.1 in figure 3).
The inclination angle of the spiral arc track and the axis of the cylindrical body form an included angle of 4.158 degrees (lead angle).
The width of the spiral arc track is 0.9-0.95 times of the diameter of the ball to be installed.
The arc radiuses of the two ends of the turning waist-shaped groove are 4-5mm, and the length of the turning waist-shaped groove is 18-19 mm.
And a ball circulation channel is arranged between the inner wall and the outer wall of the cylindrical body and is positioned on two sides of the cylindrical body.
The outer wall of cylinder body be equipped with the installation fixture block, this installation fixture block is along the outside bellied annular rand of outer wall of cylinder body.
The mounting grooves are arranged at two ends of the cylindrical body and comprise straight grooves and dovetail grooves at the tail parts of the straight grooves.
Compared with the prior art, the utility model discloses all be equipped with the waist type groove that turns to of an inner wall and the outer wall that runs through cylinder body on cylinder body's the lateral wall, spiral circular arc track and inner wall turn to the groove chamfer between the waist type groove, improve steel ball roll precision and product property ability in the circular arc track, avoided spiral circular arc track to block up simultaneously, improved the life of product.
Drawings
Fig. 1 is a schematic front view of the nut of the present invention;
FIG. 2 is a schematic view of the lane shape structure of the nut of the present invention;
fig. 3 is a structural diagram of groove chamfers between the spiral arc track and the inner wall turning waist-shaped groove.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in figures 1-2, the nut with the reversing groove chamfer angle for the electric steering gear of the automobile comprises a cylindrical body 1, wherein a spiral arc track 2 is arranged on the inner wall of the cylindrical body 1, and a turning waist-shaped groove 3 which runs through the inner wall and the outer wall of the cylindrical body is arranged on the side wall of the cylindrical body 1.
The spiral-shaped circular arc track 2 and the inner wall turn towards the groove chamfer 7 between the waist grooves 3 (see chamfer size C0.4+/-0.1 in figure 3).
The inclined angle of the spiral arc track 2 and the axial line of the cylindrical body 1 form an included angle of 4.158 degrees (thread lead angle). The width of the spiral arc track 2 is 0.9-0.95 times of the diameter of the ball to be installed.
The arc radius of the two ends of the turning waist-shaped groove 3 is 4-5mm, and the length is 18-19 mm.
And a ball circulation channel 4 is arranged between the inner wall and the outer wall of the cylindrical body 1 and is positioned at two sides of the cylindrical body 1.
The outer wall of the cylindrical body 1 is provided with an installation clamping block 5, the installation clamping block 5 is an annular clamping ring protruding outwards along the outer wall of the cylindrical body 1, and the steering gear nut is conveniently connected with a bearing, a synchronous belt pulley and the like outside the steering gear nut in a matching mode.
The two ends of the cylindrical body 1 are provided with mounting grooves 6, the mounting grooves 6 comprise straight grooves and dovetail grooves in the tail portion of the straight grooves, and a steering ball screw is conveniently inserted into a steering gear nut and is fastened and assembled with the steering gear nut.
As shown in fig. 2, for the utility model discloses lane shape structure schematic diagram of nut, middle circular 10 is the diameter 5mm ball, and circular arc 8 is the oil groove, and 9 of circular side are the chamfer, according to this fig. 2, can see that circular 10 balls contact the place in spiral circular arc track 2.
As shown in fig. 3, the spiral-shaped circular arc track 2 and the inner wall turn-round groove 7 between the waist grooves 3.
Claims (8)
1. The utility model provides an auto electric steering ware nut with switching-over groove chamfer, this nut includes cylinder body (1), and this cylinder body (1) inner wall is equipped with spiral circular arc track (2), its characterized in that, the lateral wall of cylinder body (1) on all be equipped with one and run through the inner wall of cylinder body and turning to waist type groove (3) of outer wall.
2. The automotive electric steering nut with the reversing groove chamfer according to claim 1, characterized in that the groove chamfer (7) between the spiral circular arc track (2) and the inner wall turning kidney groove (3) has a size C0.4 +/-0.1.
3. The automotive electric steering nut with the reversing groove chamfer according to claim 1, characterized in that the inclination angle of the spiral arc track (2) is 4.158 degrees from the axis of the cylindrical body (1).
4. The automotive electric steering nut with the reversing groove chamfer according to claim 1, characterized in that the width of the spiral circular arc track (2) is 0.9-0.95 times the diameter of the ball to be installed.
5. The automobile electric steering device nut with the reversing groove chamfer as claimed in claim 1, wherein the radius of the circular arc at the two ends of the steering waist-shaped groove (3) is 4-5mm, and the length is 18-19 mm.
6. The automotive electric steering gear nut with the reversing groove chamfer according to claim 1, characterized in that a ball circulation channel (4) is arranged between the inner wall and the outer wall of the cylindrical body (1), and the ball circulation channel is positioned at two sides of the cylindrical body (1).
7. The automobile electric steering gear nut with the reversing groove chamfer is characterized in that the outer wall of the cylindrical body (1) is provided with a mounting fixture block (5), and the mounting fixture block (5) is an annular collar protruding outwards along the outer wall of the cylindrical body (1).
8. The automobile electric steering gear nut with the reversing groove chamfer is characterized in that mounting grooves (6) are formed in two ends of the cylindrical body (1), and the mounting grooves (6) comprise straight grooves and dovetail grooves in the tail parts of the straight grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020026669.9U CN211765839U (en) | 2020-01-07 | 2020-01-07 | Automobile electric steering gear nut with reversing groove chamfer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020026669.9U CN211765839U (en) | 2020-01-07 | 2020-01-07 | Automobile electric steering gear nut with reversing groove chamfer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211765839U true CN211765839U (en) | 2020-10-27 |
Family
ID=72888867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020026669.9U Active CN211765839U (en) | 2020-01-07 | 2020-01-07 | Automobile electric steering gear nut with reversing groove chamfer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211765839U (en) |
-
2020
- 2020-01-07 CN CN202020026669.9U patent/CN211765839U/en active Active
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