阅读说明：本技术 一种转向器塑料壳体 (Plastic shell of steering gear ) 是由 夏玉洁 曹春林 许峰 李志坤 方毅明 于 2020-06-19 设计创作，主要内容包括：本发明公开了一种转向器塑料壳体,包括横向管体,横向管体的两端分别连接有第一管头、第二管头,横向管体上连接有倾斜管体,横向管体的外周面连接有第四管头,横向管体外周面的中部连接有第一连接臂,第一连接臂的一端连接有第一固定环,横向管体外周面的一端连接有第二连接臂,第二连接臂的一端连接有第二固定环,横向管体外周面的另一端连接有第三连接臂,第三连接臂的一端连接有第三固定环；本发明采用塑料壳体来代替铝件壳体,实现汽车转向器壳体轻量化,优选耐吸水性强,变形小,耐候性强,满足整车使用环境和载荷要求,采用塑料注塑并二次机加工的方式,不仅满足尺寸高精度要求,而且生产效率高,加工方便。(The invention discloses a plastic shell of a steering gear, which comprises a transverse pipe body, wherein two ends of the transverse pipe body are respectively connected with a first pipe head and a second pipe head, the transverse pipe body is connected with an inclined pipe body, the peripheral surface of the transverse pipe body is connected with a fourth pipe head, the middle part of the peripheral surface of the transverse pipe body is connected with a first connecting arm, one end of the first connecting arm is connected with a first fixing ring, one end of the peripheral surface of the transverse pipe body is connected with a second connecting arm, one end of the second connecting arm is connected with a second fixing ring, the other end of the peripheral surface of the transverse pipe body is connected with a third connecting arm, and one; the automobile steering gear shell adopts the plastic shell to replace an aluminum shell, realizes lightness of the automobile steering gear shell, preferably has strong water absorption resistance, small deformation and strong weather resistance, meets the requirements of the whole automobile use environment and load, adopts a plastic injection molding and secondary machining mode, not only meets the requirements of high size and precision, but also has high production efficiency and convenient processing.)

1. The plastic shell of the steering gear is characterized by comprising a transverse pipe body (1), wherein one end of the transverse pipe body (1) is fixedly connected with a first pipe head (2), the other end of the transverse pipe body (1) is fixedly connected with a second pipe head (3), one side, close to the first pipe head (2), of the transverse pipe body (1) is fixedly connected with an inclined pipe body (15), one end, far away from the transverse pipe body (1), of the inclined pipe body (15) is connected with a third pipe head (4), the inclined pipe body (15) is communicated with the transverse pipe body (1), one side, far away from the inclined pipe body (15), of the outer peripheral surface of the transverse pipe body (1) is fixedly connected with a fourth pipe head (16), and the fourth pipe head (16) is communicated with the transverse pipe body (1) and the inclined pipe body (;

the middle part of the outer peripheral surface of the transverse pipe body (1) is fixedly connected with a first connecting arm (8), one end of the first connecting arm (8) far away from the transverse pipe body (1) is fixedly connected with a first fixing ring (5), one end of the outer peripheral surface of the transverse pipe body (1) close to the first pipe head (2) is fixedly connected with a second connecting arm (9), one end of the second connecting arm (9) far away from the transverse pipe body (1) is fixedly connected with a second fixing ring (6), one end of the peripheral surface of the transverse pipe body (1) close to the second pipe head (3) is fixedly connected with a third connecting arm (10), one end of the third connecting arm (10) far away from the transverse pipe body (1) is fixedly connected with a third fixing ring (7), the second fixing ring (6), the third fixing ring (7) and the first fixing ring (5) are respectively arranged on two sides of the transverse pipe body (1);

one side of the outer peripheral surface of the transverse pipe body (1) close to the inclined pipe body (15) is fixedly connected with a first rib plate (11), the first rib plate (11) is positioned at the included angle position of the transverse pipe body (1) and the inclined pipe body (15), one side of the first rib plate (11) is fixedly connected with a first supporting block (18), one side of the first supporting block (18) is provided with a first positioning hole (181), a second rib plate (12) is fixedly connected to one side of the outer peripheral surface of the transverse pipe body (1) close to the third connecting arm (10), the second rib plate (12) is positioned at the included angle position of the transverse pipe body (1) and the third connecting arm (10), one side of the second rib plate (12) is fixedly connected with a second supporting block (19), one side of the second supporting block (19) is provided with a second positioning hole (191), and a third supporting block (20) is fixedly connected to one end, close to the first pipe head (2), of the peripheral surface of the transverse pipe body (1).

2. A plastic steering gear housing according to claim 1, wherein the second and third connecting arms (9, 10) are symmetrically arranged about the middle of the transverse tube (1).

3. The plastic shell of the steering gear according to claim 1, characterized in that the inner walls of the third pipe head (4) and the fourth pipe head (16) are provided with threaded holes.

4. The plastic shell of the steering gear according to claim 1, wherein the middle parts of the first fixing ring (5), the second fixing ring (6) and the third fixing ring (7) are provided with through holes, the first fixing ring (5), the second fixing ring (6) and the third fixing ring (7) are provided with inner and outer cylindrical surfaces, a plurality of connecting ribs (17) are arranged between the two cylindrical surfaces along the radial direction, and the connecting ribs (17) are annularly distributed between the two cylindrical surfaces in an equal radian.

5. The plastic shell of the steering gear according to claim 1, wherein the outer peripheral surface of the transverse pipe body (1) is fixedly connected with a plurality of transverse reinforcing ribs (13) along the axial direction, the plurality of transverse reinforcing ribs (13) are distributed on the outer peripheral surface of the transverse pipe body (1) in an array manner with equal radian circumference, the transverse reinforcing ribs (13) extend to the first pipe head (2), the second pipe head (3), the inclined pipe body (15) and the fourth pipe head (16) along the transverse pipe body (1), the outer peripheral surface of the transverse pipe body (1) is fixedly connected with a plurality of annular reinforcing ribs (14), and the plurality of annular reinforcing ribs (14) are distributed on the outer peripheral surface of the transverse pipe body (1) in a linear array manner.

6. The plastic shell of the steering gear according to claim 1, wherein a plurality of inclined reinforcing ribs (21) are fixedly connected to both sides of the outer peripheral surface of the inclined tube body (15) along the axial direction, the plurality of inclined reinforcing ribs (21) on both sides of the outer peripheral surface of the inclined tube body (15) are symmetrically distributed, three of the inclined reinforcing ribs (21) on one side of the surface of the inclined tube body (15) extend onto the transverse tube body (1) and are cross-connected with the transverse reinforcing ribs (13) on the transverse tube body (1), a plurality of annular reinforcing ribs (22) are fixedly connected to the outer peripheral surface of the inclined tube body (15) in the direction perpendicular to the inclined reinforcing ribs (21), and one of the annular reinforcing ribs (22) extends onto the first tube head (2).

7. A plastic housing for a steering gear according to claim 1, characterized in that the wall thickness of the transverse tube body (1) is 3 mm.

Technical Field

The invention relates to a steering gear shell, in particular to a steering gear plastic shell.

Background

The steering gear is used for properly converting steering torque and steering angle from a steering wheel (mainly reducing and increasing the torque) and outputting the steering torque and the steering angle to a steering pull rod mechanism so as to steer the automobile, so the steering gear is essentially a speed reduction transmission device. Steering gear has many kinds, like rack and pinion formula, circulation ball formula, worm crank finger pin formula, power steering gear etc. steering gear shell generally adopts aluminium system shell in the market, and the weight of original aluminium spare casing is heavier, increases automobile steering gear's whole weight and oil consumption, and the shaping is longer moreover, and processing is comparatively inconvenient, and production efficiency is low.

Disclosure of Invention

The invention aims to provide a plastic steering gear shell, which is characterized in that the material of the steering gear shell on an automobile is analyzed, the material of the product is continuously screened and optimized, the plastic material is firstly adopted to replace aluminum material, and polyphenylene sulfide (containing 40% of glass fiber) is preferably selected, so that the plastic steering gear shell has small water absorption resistance and deformation resistance and strong weather resistance, and the more stable material meets the requirements of the whole automobile environment and load; through mechanical and structural analysis of the automobile steering gear shell, the structure on the plastic steering gear shell is continuously optimized, the wall thickness is optimized, and the rib positions are optimally arranged; the molding method comprises the steps of firstly injecting plastic melt into an injection mold, cooling to form the plastic steering gear shell blank, clamping and fixing the shell blank through a clamp, positioning through two inner holes of a first positioning hole and a second positioning hole, supporting through three surfaces of a first supporting block, a second supporting block and a third supporting block, and carrying out secondary machining on the upper end surface, the lower end surface and the inner hole of the cylindrical surface of the first fixing ring, the second fixing ring and the third fixing ring; then, performing secondary positioning and fixing through a first fixing ring, a second fixing ring and a third fixing ring, and performing mechanical processing on the inner walls of the first tube head, the second tube head, the third tube head, the transverse tube body and the inclined tube body to obtain a plastic shell of the steering gear so as to finish the molding production of the plastic steering gear shell; compared with the traditional aluminum shell, the plastic steering gear shell has the advantages that the overall weight is reduced by about 40%, and the light weight of the automobile steering gear shell is realized; and adopt the quick integrated into one piece mode of plastics steering gear casing of moulding plastics, processing is convenient, and production efficiency is high, satisfies market production demand, has solved that traditional aluminium alloy casing weight is heavier, difficult processing, technical problem that production efficiency is low.

The purpose of the invention can be realized by the following technical scheme:

a steering gear plastic shell comprises a transverse pipe body, wherein one end of the transverse pipe body is fixedly connected with a first pipe head, the other end of the transverse pipe body is fixedly connected with a second pipe head, one side, close to the first pipe head, of the transverse pipe body is fixedly connected with an inclined pipe body, one end, far away from the transverse pipe body, of the inclined pipe body is connected with a third pipe head, the inclined pipe body is communicated with the transverse pipe body, one side, far away from the inclined pipe body, of the outer peripheral surface of the transverse pipe body is fixedly connected with a fourth pipe head, and the fourth pipe head is communicated with the transverse pipe body and the;

the middle part of the peripheral surface of the transverse pipe body is fixedly connected with a first connecting arm, one end of the first connecting arm, which is far away from the transverse pipe body, is fixedly connected with a first fixing ring, one end of the peripheral surface of the transverse pipe body, which is close to the first pipe head, is fixedly connected with a second connecting arm, one end of the second connecting arm, which is far away from the transverse pipe body, is fixedly connected with a second fixing ring, one end of the peripheral surface of the transverse pipe body, which is close to the second pipe head, is fixedly connected with a third connecting arm, one end of the third connecting arm, which is far away from the transverse pipe body, is fixedly connected with a third fixing ring;

the outer peripheral surface of the transverse pipe body is close to a first rib plate fixedly connected to one side of the inclined pipe body, the first rib plate is located at an included angle position between the transverse pipe body and the inclined pipe body, a first supporting block is fixedly connected to one side of the first rib plate, a first positioning hole is formed in one side of the first supporting block, a second rib plate is fixedly connected to one side of the outer peripheral surface of the transverse pipe body, the second rib plate is located at an included angle position between the transverse pipe body and a third connecting arm, a second supporting block is fixedly connected to one side of the second rib plate, a second positioning hole is formed in one side of the second supporting block, and a third supporting block is fixedly connected to one end, close to a first pipe head, of the outer peripheral surface of the transverse.

Furthermore, the second connecting arm and the third connecting arm are symmetrically distributed around the middle part of the transverse pipe body.

Furthermore, threaded holes are formed in the inner walls of the third pipe head and the fourth pipe head.

Further, the middle parts of the first fixing ring, the second fixing ring and the third fixing ring are provided with through holes, the first fixing ring, the second fixing ring and the third fixing ring are provided with inner and outer cylindrical surfaces, a plurality of connecting ribs are arranged between the two cylindrical surfaces along the radial direction, and the connecting ribs are distributed between the two cylindrical surfaces in an equal radian annular mode.

Furthermore, the peripheral surface of the transverse pipe body is fixedly connected with a plurality of transverse reinforcing ribs, the plurality of transverse reinforcing ribs are distributed on the peripheral surface of the transverse pipe body in an equal radian circumferential array, and the transverse reinforcing ribs extend to the first pipe head, the second pipe head, the inclined pipe body and the fourth pipe head along the transverse pipe body; the annular reinforcing ribs are distributed in a linear array on the outer peripheral surface of the transverse pipe body; the transverse reinforcing ribs and the annular reinforcing ribs are integrally arranged on the outer peripheral surface of the transverse pipe body in a net shape, so that the connection strength of the transverse pipe body, the first pipe head, the second pipe head, the inclined pipe body and the fourth pipe head is enhanced.

Further, the equal fixedly connected with a plurality of slope strengthening rib of axial direction is followed to the outer global both sides of slope body, a plurality of slope body outer peripheral face both sides the slope strengthening rib is the symmetric distribution, and wherein three of slope body surface one side the slope strengthening rib extends to horizontal body on to with horizontal strengthening rib cross connection on the horizontal body, the outer peripheral face and the cyclic annular strengthening rib of slope strengthening rib vertical direction fixedly connected with a plurality of slope body, one of them cyclic annular strengthening rib extends to first pipe overhead.

Furthermore, during production, firstly, injecting plastic melt into a mold, cooling to form a shell blank, then clamping and fixing the shell blank through a clamp, positioning through two inner holes of a first positioning hole and a second positioning hole, supporting through three surfaces of a first supporting block, a second supporting block and a third supporting block, and carrying out secondary mechanical processing on the upper end surface and the lower end surface of the cylindrical surface of the first fixing ring, the second fixing ring and the third fixing ring and the inner holes; then, the first fixing ring, the second fixing ring and the third fixing ring are used for secondary positioning and fixing, and the inner walls of the first pipe head, the second pipe head, the third pipe head, the transverse pipe body and the inclined pipe body are machined to obtain the plastic shell of the steering gear.

Further, the wall thickness of the transverse pipe body is 3 mm.

The invention has the beneficial effects that:

in the invention, the transverse reinforcing ribs and the annular reinforcing ribs are arranged on the transverse pipe body, so that the connection strength of each pipe head and the transverse pipe body is enhanced, in the actual use process, the bearing is arranged in the third pipe head, the strength of the inclined pipe body is enhanced by arranging the inclined reinforcing ribs and the annular reinforcing ribs on the surface of the inclined pipe body, and the connecting ribs are also arranged among the first fixing ring, the second fixing ring, the third fixing ring and the transverse pipe body, so that the connection strength of the first fixing ring, the second fixing ring and the third fixing ring is enhanced;

according to the invention, through mechanical and structural analysis of the original aluminum shell on the market, the plastic shell is adopted to replace the aluminum shell, the whole weight of the plastic shell is about one kilogram, compared with the traditional aluminum shell, the weight of the plastic shell is reduced by 40%, and the light weight of the automobile steering gear shell is realized;

the invention optimizes the structural rib position arrangement of the plastic shell, the existing structure meets the product strength requirement on the automobile through computer finite element analysis, the product material is continuously screened and optimized, the polyphenylene sulfide (containing 40 percent of glass fiber) is preferably selected, the material has small water absorption deformation resistance and strong weather resistance, and the more stable material meets the requirements of the whole automobile environment and load;

the plastic shell is produced by firstly carrying out plastic injection molding on the blank and then carrying out secondary machining, so that the dimensional precision requirement and the market production requirement are met, and the plastic shell is quickly and integrally formed by plastic injection molding, is convenient to process and has high production efficiency.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a front view of a plastic housing for a steering gear in accordance with the present invention;

FIG. 2 is a structural rear view of a plastic housing of the steering gear of the present invention;

FIG. 3 is a cross-sectional view of a diverter plastic housing according to the present invention;

FIG. 4 is a left side view of the construction of a plastic housing for a steering gear of the present invention;

FIG. 5 is a partial block diagram of a plastic housing for a steering gear in accordance with the present invention.

In the figure: 1. a transverse tube body; 2. a first tube head; 3. a second tube head; 4. a third tube head; 5. a first retaining ring; 6. a second retaining ring; 7. a third fixing ring; 8. a first connecting arm; 9. a second connecting arm; 10. a third connecting arm; 11. a first rib plate; 12. a second rib plate; 13. transverse reinforcing ribs; 14. an annular reinforcing rib; 15. inclining the pipe body; 16. a fourth tube head; 17. connecting ribs; 18. a first support block; 181. a first positioning hole; 19. a second support block; 191. a second positioning hole; 20. a third support block; 21. inclining the reinforcing ribs; 22. and an annular reinforcing rib.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 5, a plastic housing of a steering gear comprises a transverse pipe body 1, wherein one end of the transverse pipe body 1 is fixedly connected with a first pipe head 2, the other end of the transverse pipe body 1 is fixedly connected with a second pipe head 3, one side of the transverse pipe body 1 close to the first pipe head 2 is fixedly connected with an inclined pipe body 15, one end of the inclined pipe body 15 far away from the transverse pipe body 1 is connected with a third pipe head 4, the inclined pipe body 15 is communicated with the transverse pipe body 1, one side of the outer peripheral surface of the transverse pipe body 1 far away from the inclined pipe body 15 is fixedly connected with a fourth pipe head 16, and the fourth pipe head 16 is communicated with the transverse pipe body 1 and the inclined pipe body;

a first connecting arm 8 is fixedly connected to the middle of the peripheral surface of the transverse pipe body 1, a first fixing ring 5 is fixedly connected to one end, away from the transverse pipe body 1, of the first connecting arm 8, a second connecting arm 9 is fixedly connected to one end, close to the first pipe head 2, of the peripheral surface of the transverse pipe body 1, a second fixing ring 6 is fixedly connected to one end, away from the transverse pipe body 1, of the second connecting arm 9, a third connecting arm 10 is fixedly connected to one end, close to the second pipe head 3, of the peripheral surface of the transverse pipe body 1, a third fixing ring 7 is fixedly connected to one end, away from the transverse pipe body 1, of the third connecting arm 10, and the second fixing ring 6, the third fixing ring 7 and the first fixing ring 5;

one side of the outer peripheral surface of the transverse pipe body 1 close to the inclined pipe body 15 is fixedly connected with a first rib plate 11, the first rib plate 11 is located at an included angle position between the transverse pipe body 1 and the inclined pipe body 15, one side of the first rib plate 11 is fixedly connected with a first supporting block 18, one side of the first supporting block 18 is provided with a first positioning hole 181, one side of the outer peripheral surface of the transverse pipe body 1 close to a third connecting arm 10 is fixedly connected with a second rib plate 12, the second rib plate 12 is located at an included angle position between the transverse pipe body 1 and the third connecting arm 10, one side of the second rib plate 12 is fixedly connected with a second supporting block 19, one side of the second supporting block 19 is provided with a second positioning hole 191, and one end of the outer peripheral surface of the transverse pipe body 1 close to the first pipe head 2 is fixedly connected.

The second connecting arm 9 and the third connecting arm 10 are symmetrically distributed around the middle part of the transverse pipe body 1.

The inner walls of the third pipe head 4 and the fourth pipe head 16 are provided with threaded holes.

The middle parts of the first fixing ring 5, the second fixing ring 6 and the third fixing ring 7 are provided with through holes, the first fixing ring 5, the second fixing ring 6 and the third fixing ring 7 are provided with inner and outer cylindrical surfaces, a plurality of connecting ribs 17 are arranged between the two cylindrical surfaces along the radial direction, and the connecting ribs 17 are annularly distributed between the two cylindrical surfaces at equal radian.

The outer peripheral face fixedly connected with horizontal strengthening rib 13 of a plurality of horizontal body 1, a plurality of horizontal strengthening rib 13 is in equal radian circumference array distribution in the periphery of horizontal body 1, a plurality of annular strengthening rib 14 of outer peripheral face fixedly connected with of horizontal body 1, a plurality of annular strengthening rib 14 is in equidistant linear array distribution in the periphery of horizontal body 1, and the reinforcing of horizontal strengthening rib 13 and annular strengthening rib 14 has strengthened the joint strength of each tube head and horizontal body 1.

The equal fixedly connected with a plurality of slope strengthening rib 21 of axial direction is followed to slope body 15 outer peripheral face both sides, a plurality of slope body 15 outer peripheral face both sides slope strengthening rib 21 is the symmetric distribution, and the slope body 15 wherein three of surface one side slope strengthening rib 21 extends to horizontal body 1 on to with horizontal 13 cross connection of strengthening rib on the horizontal body 1, slope body 15's outer peripheral face and slope strengthening rib 21 vertical direction fixedly connected with a plurality of annular strengthening rib 22, one of them annular strengthening rib 22 extends to on the first tube head 2, strengthens the connection between third tube head 4, first tube head 2 and the horizontal body 1.

The wall thickness of the transverse pipe body 1 is 3 mm.

During production, firstly, plastic melt is injected into a mold, a steering gear shell blank is formed by cooling, then the shell blank is clamped and fixed by a clamp, two points of the first positioning hole 181 and the second positioning hole 191 are used for positioning, and three surfaces of the first supporting block 18, the second supporting block 19 and the third supporting block 20 are used for supporting;

performing secondary machining on the upper end surface, the lower end surface and the inner hole of the cylindrical surfaces of the first fixing ring 5, the second fixing ring 6 and the third fixing ring 7; then, the first fixing ring 5, the second fixing ring 6 and the third fixing ring 7 are used for secondary positioning and fixing, and the inner walls of the first pipe head 2, the second pipe head 3, the third pipe head 4, the transverse pipe body 1 and the inclined pipe body 15 are machined to obtain the plastic shell of the steering gear.

According to the invention, the transverse reinforcing ribs 13 and the annular reinforcing ribs 14 are arranged on the transverse pipe body 1, so that the connection strength of each pipe head and the transverse pipe body 1 is enhanced, in the actual use process, a bearing is arranged in the third pipe head 4, the strength of the inclined pipe body 15 is enhanced by arranging the inclined reinforcing ribs 21 and the annular reinforcing ribs 22 on the surface of the inclined pipe body 15, connecting ribs are also arranged among the first fixing ring 5, the second fixing ring 6, the third fixing ring 7 and the transverse pipe body 1, and the connection strength of the first fixing ring 5, the second fixing ring 6 and the third fixing ring 7 is enhanced;

according to the invention, through mechanical and structural analysis of the original aluminum shell on the market, a plastic shell is selected to replace the aluminum shell, the whole weight of the plastic shell is about one kilogram, compared with the traditional aluminum shell, the weight of the plastic shell is reduced by 40%, and the light weight of the automobile steering gear shell is realized;

the invention optimizes the structural rib position arrangement of the plastic shell, and through computer finite element analysis, the existing structure completely meets the strength requirement of the steering gear shell on the automobile, and continuously screens and optimizes the product material, preferably selects the polyphenylene sulfide (containing 40 percent of glass fiber) which has small water absorption resistance and deformation and strong weather resistance, and the more stable material meets the requirements of the whole automobile environment and load;

the plastic shell is produced by adopting a mode of plastic injection molding of the blank and secondary machining, so that the dimensional precision requirement and the market production requirement can be met, and the plastic injection molding can be quickly and integrally formed, and the plastic shell is convenient to process and high in production efficiency.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.