CN216916003U

CN216916003U - Concentric type steering gear shell and side cover structure

Info

Publication number: CN216916003U
Application number: CN202220819753.5U
Authority: CN
Inventors: 孙龙; 王少博; 孔真斌; 王庆军; 侯学为
Original assignee: Hubei Henglong Automotive System Group Co Ltd
Current assignee: Hubei Henglong Automotive System Group Co Ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-07-08
Anticipated expiration: 2032-04-11

Abstract

The utility model relates to a concentric type steering gear shell and a side cover structure, belonging to the technical field of automobile steering systems. The steering mechanism comprises a shell and a side cover, wherein a steering shaft arm is arranged in the shell, the shell corresponding to the non-output end of the steering shaft arm is provided with the side cover in a threaded manner, the section of the side cover is M-shaped, the center of the side cover is radially provided with a step hole, the periphery of the side cover is provided with an assembly boss, one side of the assembly boss is provided with a groove with a step-shaped section, and the other side of the assembly boss is symmetrically provided with convex wings which facilitate the rotation of the side cover; and the step hole of the side cover is connected with the steering shaft arm through a locking connecting piece. The shell and side cover structure adjusts the connection mode of the shell and the side cover, and a shell side connecting flange surface and a connecting bolt are eliminated; the design can obviously reduce the axial length of the non-output end; these characteristics give sufficient space for peripheral parts of the automobile chassis, and great advantages are provided for the chassis structure design of compact automobile types.

Description

Concentric type steering gear shell and side cover structure

Technical Field

The utility model relates to a concentric type steering gear shell and a side cover structure, belonging to the technical field of automobile steering systems.

Background

Currently, various types of power steering devices have been widely used, which assist users in steering the vehicle by using hydraulic, pneumatic or electronic power assistance.

Under the background that the light weight of the whole automobile is required by automobile factories, the shape of the power steering gear is more compact and the weight of the power steering gear is more and more light on the premise of improving the output torque, the conventional power steering gear has larger volume and overweight weight, so that the production cost is overhigh, and the shell and the side cover of the conventional power steering gear adopt a connecting flange surface and a connecting bolt, so that the axial length of a non-output end is overlong, and the space around the automobile chassis is influenced, therefore, the improvement of the power steering gear is necessary.

Disclosure of Invention

The utility model aims to provide a concentric type steering gear shell and a side cover structure which are compact in structure and light in weight, and effectively avoid the influence of overlong axial length of a non-output end on the space around an automobile chassis.

The utility model realizes the purpose through the following technical scheme:

the utility model provides a concentric type steering gear casing and side cap structure, includes casing and side cap, is equipped with the steering spindle arm in the casing, and steering spindle arm one end is the output, and the steering spindle arm other end is non-output, and the steering spindle arm of output extends the casing outside, its characterized in that: a side cover is arranged on the shell corresponding to the non-output end of the steering shaft arm in a threaded manner, the section of the side cover is in an M shape, a step hole is radially arranged in the center of the side cover, an assembly boss is arranged on the circumference of the side cover, a groove with a step-shaped section is arranged on one side of the assembly boss, and convex wings which facilitate the rotation of the side cover are symmetrically arranged on the other side of the assembly boss; and the step hole of the side cover is connected with the steering shaft arm through a locking connecting piece.

The position of the shell corresponding to the groove on the side cover is provided with an inner bulge, and the inner bulge of the shell is matched with the groove of the side cover to enable the shell and the side cover to be circumferentially limited.

The outer side of the assembling boss is provided with an external thread, the inner wall of the shell corresponding to the external thread is provided with an internal thread, and the external thread of the assembling boss is connected with the internal thread of the inner wall of the shell in a matched mode.

The locking connecting piece constitute by hex nut, adjusting bolt and lock nut, adjusting bolt one end extends to in the hole of steering spindle arm, and the cover is equipped with lock nut on the adjusting bolt that extends to steering spindle arm hole, lock nut and steering spindle arm hole threaded connection, the step hole that the adjusting bolt other end passed the side cap extends to the outside, step hole and adjusting bolt threaded connection are equipped with on the adjusting bolt that extends to the step hole outside and are used for forming spacing hex nut to the side cap.

An inner boss which is matched and inserted with the steering shaft arm is arranged in the side cover on one side of the stepped hole, and the inner boss is in an annular step shape.

An oil seal and a bearing are arranged between the side cover and the steering shaft arm, and a sealing ring is arranged between the excircle of the cover and the shell.

Compared with the prior art, the utility model has the beneficial effects that:

the concentric steering gear shell and side cover structure adjusts the connection mode of the shell and the side cover, and a shell side connecting flange surface and a connecting bolt are eliminated; the axial length of the non-output end is effectively reduced; enough space is provided for peripheral parts of the automobile chassis, and great advantages are provided for the chassis structure design of compact automobile types; meanwhile, the appearance structure can be obviously reduced on the premise of not changing the output torque, unnecessary parts are reduced, and the weight can be reduced by more than 5% compared with the weight of a similar series of steering gears.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the side casing of the present invention;

FIG. 3 is a schematic view of the construction of a steering shaft arm according to the present invention;

fig. 4 is a schematic view of a connection structure of a conventional steering gear case and a side cover.

In the figure: 1. a housing; 2. a side cover; 3. a steering shaft arm; 4. KT bearing; 5. KT oil seal; 6. assembling a boss; 7. a groove; 8. a seal ring; 9. a convex wing; 10. adjusting the bolt; 11. locking the nut; 12. a hexagonal nut; 13. CG oil seal; 14. a CG bearing; 15. an existing diverter; 16. a stepped bore; 17. an inner boss.

Detailed Description

As shown in figures 1-4

This concentric type steering gear casing and side cap structure, including casing 1 and side cap 2, 1 endotheca of casing is equipped with

steering spindle arm

3, 3 one ends of steering spindle arm are the output, the 3 other ends of steering spindle arm are non-output, be provided with KT bearing 4 and KT oil blanket 5 between casing 1 and the steering spindle arm 3 that is close to the output, KT oil blanket 5 packs into the sealed position of 1 output of casing (the two can select the cooperation mode according to the sealing member type), the 1 bearing position of casing is pressed in to KT bearing 4 interference, the steering spindle arm 3 of output extends the 1 outside of casing, the steering spindle arm 3 that extends casing 1 is used for providing the output torque.

On the casing 1 that corresponds with the non-output end of steering spindle arm 3, install side cap 2 through the screw thread, 2 cross-sections of side cap are "M" font, the central point of side cap 2 puts and radially is provided with step hole 16, be provided with assembly boss 6 on 2 circumferences of side cap, the 6 outsides of assembly boss are provided with the external screw thread, be provided with the internal thread on the casing 1 inner wall that corresponds with the external screw thread, the external screw thread of assembly boss 6 is connected with the interior screw-thread fit of casing 1 inner wall, during the use, external screw thread through side cap 2 and the interior screw-thread fit of casing 1, it is spacing to make between side cap 2 and the casing 1 radial and circumference each other.

One side of the assembly boss 6 is provided with a groove 7 with a step-shaped section, so that the overall structure of the side cover 2 is ensured, and the weight of the side cover 2 is further reduced, so that the requirement of light weight is met.

The 6 opposite side symmetries of assembly boss are radially provided with the flange 9 that makes things convenient for side cap 2 to rotate, and during the use, the staff drives side cap 2 through flange 9 and takes place rotation circumferentially on casing 1 to conveniently dismantle and install side cap 2.

The inner side of a stepped hole 16 of the side cover 2 is connected with a steering shaft arm 3 through a locking connecting piece, the locking connecting piece is composed of an adjusting bolt 10, a locking nut 11 and a hexagon nut 12, one end of the adjusting bolt 10 extends into an inner hole of the steering shaft arm 3, the inner hole of the non-output end of the steering shaft arm 3 is in a step shape, the inner hole of the steering shaft arm 3 corresponds to the stepped hole 16 of the side cover 2, the locking nut 11 is sleeved on the adjusting bolt 10 extending to the inner hole of the steering shaft arm 3, the locking nut 11 is movably connected with the adjusting bolt 10, the circumference of the locking nut 11 is provided with external threads, the inner wall of the inner hole of the steering shaft arm 3 corresponding to the external threads of the locking nut 11 is provided with internal threads, the external threads of the locking nut 11 are in threaded connection with the internal threads of the inner hole of the steering shaft arm 3, and the two are mutually fixed through threaded connection;

the adjusting bolt 10 is "T" font, lock nut 11 forms spacing to the flange end of adjusting bolt 10, the adjusting bolt 10 other end passes the step hole 16 of side cap 2 and extends to the outside, adjusting bolt 10 and the step hole 16 threaded connection of side cap 2, be equipped with on the adjusting bolt 10 that extends to the step hole 16 outside and be used for forming spacing hexagon nut 12 to side cap 2, during the use, because lock nut 11 and the hole fixed connection of steering spindle arm 3, lock nut 11 is used for forming the activity spacing to adjusting bolt 10, make side cap 2 form spacing at adjusting bolt 10 through hexagon nut 12, thereby make side cap 2 form the activity spacing for steering spindle arm 3.

An inner boss 17 which is matched and inserted with the steering shaft arm 3 is arranged in the side cover 2 on one side of the stepped hole 16, and the inner boss 17 is in an annular step shape.

The excircle of side cap 2 is provided with the seal ring groove, is provided with sealing washer 8 in the seal ring groove, and sealing washer 8 is connected with the contact of casing 1, and sealing washer 8 makes to be in encapsulated situation between side cap 2 and the casing 1, is provided with CG oil blanket 13 and CG bearing 14 between side cap 2 and the steering spindle arm 3, and CG oil blanket 13 is packed into side cap 2 and is sealed the position (the two can select the fit mode according to the sealing member type), and CG bearing 14 interference is impressed side cap 2 bearing position.

When the side cover 2 is assembled on the shell and side cover structure, firstly, the flange end of the adjusting bolt 10 is installed in an inner hole of a steering arm shaft, then the adjusting bolt 10 is sleeved with the locking nut 11, the locking nut 11 is screwed into the inner hole of the steering arm shaft through threads, a certain angle is retracted according to the required requirement in the screwing process, a certain axial gap is reserved for the adjusting bolt 10, a fixed state is formed between the locking nut 11 and the inner hole of the steering arm shaft after screwing, and the adjusting bolt 10 moves relative to the locking nut 11.

Then the adjusting bolt 10 is screwed into the stepped hole 16 of the side cover 2, the side cover 2 is arranged in the boss in the shell 1 corresponding to the non-output end of the steering shaft arm 3, and then the hexagonal nut 12 is arranged on the adjusting bolt 10 through the screw thread, so that the hexagonal nut 12 forms radial limit to the side cover 2.

After the hexagonal nut 12 is installed in place, the side cover 2 is screwed into the housing 1 through threads, and the housing 1 is positioned by the way that the groove 7 of the side cover 2 is attached to the inner protrusion of the housing 1, namely, the assembly operation of the side cover 2 is completed.

The casing and the side cover structure change the axial position of a steering arm shaft relative to a rack through an adjusting bolt 10 on the side cover 2, thereby being convenient for adjusting the meshing clearance of a sector part of the steering gear.

The shell and side cover structure adjusts the connection mode of the shell 1 and the side cover 2, and compared with the shell 1 and the side cover 2 of the existing steering gear 15, the shell side connecting flange surface and the connecting bolt are eliminated; the design can obviously reduce the axial length of the non-output end; these characteristics give sufficient space for peripheral parts of the automobile chassis, and great advantages are provided for the chassis structure design of compact automobile types.

Claims

1. The utility model provides a concentric type steering gear casing and side cap structure, includes casing (1) and side cap (2), is equipped with steering spindle arm (3) in casing (1), and steering spindle arm (3) one end is the output, and the steering spindle arm (3) other end is the non-output end, and the steering spindle arm (3) of output extend casing (1) outside, its characterized in that: a side cover (2) is arranged on a shell (1) corresponding to the non-output end of a steering shaft arm (3) in a threaded mode, the section of the side cover (2) is M-shaped, a step hole (16) is radially formed in the center of the side cover (2), an assembling boss (6) is arranged on the circumference of the side cover (2), a groove (7) with a step-shaped section is formed in one side of the assembling boss (6), and convex wings (9) facilitating rotation of the side cover (2) are symmetrically arranged on the other side of the assembling boss (6); the inner part of the stepped hole (16) of the side cover (2) is connected with the steering shaft arm (3) through a locking connecting piece.

2. The concentric steering gear housing and side cover arrangement of claim 1, wherein: the position of the shell (1) corresponding to the groove (7) on the side cover (2) is provided with an inner bulge, and the inner bulge of the shell (1) is matched with the groove (7) of the side cover (2) to enable the shell (1) and the side cover (2) to be circumferentially limited.

3. The concentric steering gear housing and side cover arrangement of claim 1, wherein: the outer side of the assembling boss (6) is provided with an external thread, the inner wall of the shell (1) corresponding to the external thread is provided with an internal thread, and the external thread of the assembling boss (6) is matched and connected with the internal thread of the inner wall of the shell (1).

4. The concentric steering gear housing and side cover arrangement of claim 1, wherein: the locking connection piece by hexagon nut (12), adjusting bolt (10) and lock nut (11) constitute, adjusting bolt (10) one end extends to in the hole of steering spindle arm (3), it is equipped with lock nut (11) to extend to adjusting bolt (10) of steering spindle arm (3) hole to go up the cover, lock nut (11) and steering spindle arm (3) hole threaded connection, step hole (16) that the adjusting bolt (10) other end passed side cap (2) extend to the outside, step hole (16) and adjusting bolt (10) threaded connection, be equipped with on adjusting bolt (10) that extend to the step hole (16) outside and be used for forming spacing hexagon nut (12) to side cap (2).

5. The concentric steering gear housing and side cover arrangement of claim 1, wherein: an inner boss (17) which is matched and inserted with the steering shaft arm (3) is arranged in the side cover (2) on one side of the stepped hole (16), and the inner boss (17) is in an annular step shape.

6. The concentric steering gear housing and side cover arrangement of claim 1, wherein: a CG oil seal (13) and a CG bearing (14) are arranged between the side cover (2) and the steering shaft arm (3), and a sealing ring (8) is arranged between the excircle of the side cover (2) and the shell (1).