CN208233155U

CN208233155U - A kind of rack bush with oil storage tank

Info

Publication number: CN208233155U
Application number: CN201820378571.2U
Authority: CN
Inventors: 唐前; 杨卫祥; 贺楚运
Original assignee: Bosch Huayu Steering Systems Co Ltd
Current assignee: Bosch Huayu Steering Systems Co Ltd
Priority date: 2018-03-20
Filing date: 2018-03-20
Publication date: 2018-12-14
Anticipated expiration: 2028-03-20

Abstract

The utility model relates to car steering tube columns to produce mounting technology field, it is concretely a kind of rack bush with oil storage tank, the tail end overhead surface of bush body is equipped with upper limit platform, the tail end underlying surfaces of bush body are equipped with lower limit platform, the leading flank of upper limit platform and lower limit platform is equipped with two small boss, several ring shape oil storage tanks are uniformly provided on the inner wall of bush body, the head end of bush body offers head end dashpot, the tail end of bush body offers tail end dashpot, the utility model is compared with prior art, the utility model is easy to assembly, cooperation is close, high reliablity, annular oil storage tank is set inside rack bush simultaneously, lubrication is abundant, it can guarantee that the frictional force between fitted shaft and bushing is small, reduce liner wear, obtain good mobile power and torsional performance.Solves existing machinery diverter after high mileage simultaneously, lack of lubrication between rack gear and rack bush leads to the problem of steering friction abnormal sound.

Description

A kind of rack bush with oil storage tank

Technical field

The utility model relates to car steering tube columns to produce mounting technology field, concretely be a kind of tooth with oil storage tank Bushing.

Background technique

The rack bush of pinion and-rack manual steering gear, is assemblied in inside steering gear housing, and rack gear is from rack bush Between pass through, rack bush plays a supporting role to rack gear, guarantee rack gear smooth movement, and then complete automobile steering, rack gear lining Cover the radial pressure and axial friction for receiving that rack gear is given in this motion process.

Existing rack bush, structure is simple, not close with shell cooperation, while bushing inner diameter lubricant effect is poor, is easy Lead to rack gear and rack bush dry friction, generate and turn to friction abnormal sound, sleeve inner surface excessive wear, bushing and rack gear cooperate not Closely, larger gap is generated, so that diverter NVH performance is deteriorated.

A kind of easy installation is designed thus, and cooperation is close, can reduce the steering gear rack lining of frictional force between rack gear and bushing Set be very it is necessary to.

Summary of the invention

The utility model breaches the problem of the prior art, devises a kind of easy installation, cooperation is close, can reduce rack gear The steering gear rack bushing of frictional force between bushing.

In order to achieve the above object, the utility model devises a kind of rack bush with oil storage tank, including bush body, The bush body is sleeve-shaped, it is characterised in that: the tail end overhead surface of bush body is equipped with upper limit platform, bush body Tail end underlying surfaces are equipped with lower limit platform, and the leading flank of upper limit platform and lower limit platform is equipped with two small boss, bush body Inner wall on be uniformly provided with several ring shape oil storage tanks, the head end of bush body offers head end dashpot, the tail of bush body End offers tail end dashpot.

The head end dashpot and tail end dashpot are arranged along the axial direction interleaved of bush body.

The quantity of the head end dashpot is 4, and about bush body head end center rotational symmetry, every is spaced 90 °.

The quantity of the tail end dashpot is 4, is divided into left and right two groups, and every group includes two coplanar tail end dashpots, Left and right two groups of tail end dashpots are respectively distributed to the left and right sides of upper limit platform, lower limit platform, and left and right two groups of tail ends buffer Slot is parallel to each other.

The slot bottom of the head end dashpot and tail end dashpot is closed.

Compared with prior art, the utility model is easy to assembly for the utility model, and cooperation is close, high reliablity, while Annular oil storage tank is set inside rack bush, and lubrication sufficiently, can guarantee that the frictional force between fitted shaft and bushing is small, reduce bushing mill Damage obtains good mobile power and torsional performance.Solves existing machinery diverter after high mileage simultaneously, rack gear and rack gear serve as a contrast Inner room lack of lubrication leads to the problem of steering friction abnormal sound.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Fig. 2 is the front view of the utility model.

Fig. 3 is the rearview of the utility model.

Referring to Fig. 1 ~ 3,1 is upper limit platform, and 2 be lower limit platform, and 3 be small boss, and 4 buffer for annular oil storage tank, 5 for head end Slot, 6 be tail end dashpot.

Specific embodiment

The utility model is described further in conjunction with attached drawing.

Referring to Fig. 1 ~ 3, the utility model devises a kind of rack bush with oil storage tank, including bush body, the lining Set ontology is sleeve-shaped, and the tail end overhead surface of bush body is equipped with upper limit platform 1, and the tail end underlying surfaces of bush body are equipped with The leading flank of lower limit platform 2, upper limit platform 1 and lower limit platform 2 is equipped with two small boss 3, on the inner wall of bush body uniformly Equipped with several ring shape oil storage tanks 4, the head end of bush body offers head end dashpot 5, and the tail end of bush body offers tail Hold dashpot 6.

Head end dashpot 5 and tail end dashpot 6 are handed over along the axial direction interval of bush body in the utility model Mistake setting.

The quantity of head end dashpot 5 is 4 in the utility model, symmetrically about bush body head end center, every 90 ° of interval.

The quantity of tail end dashpot 6 is 4 in the utility model, is divided into left and right two groups, and every group includes two coplanar tails Dashpot 6 is held, left and right two groups of tail end dashpots are respectively distributed to the left and right sides of upper limit platform 1, lower limit platform 2, and left and right Two groups of tail end dashpots are parallel to each other.

The slot bottom of head end dashpot 5 and tail end dashpot 6 is closed in the utility model.

In specific implementation, the utility model is assembled in pinion and-rack manual steering gear, the two cooperation is close, can By property height, while annular oil storage tank is set inside rack bush, lubrication sufficiently, can guarantee the friction between rack gear and rack bush Power is small, reduces liner wear, obtains good mobile power and torsional performance, while solving existing machinery turning machine in high mileage Afterwards, lack of lubrication between rack gear and rack bush, and steering friction abnormal sound is led to the problem of, reduce generate by liner wear and tooth The gap of item, also can effectively solve bushing and shell cooperates not close problem, can be effectively improved the noise level of diverter.

Claims

1. a kind of rack bush with oil storage tank, including bush body, the bush body is sleeve-shaped, it is characterised in that: lining The tail end overhead surface for covering ontology is equipped with upper limit platform (1), and the tail end underlying surfaces of bush body are equipped with lower limit platform (2), on The leading flank of limiting stand (1) and lower limit platform (2) is equipped with two small boss (3), if being uniformly provided on the inner wall of bush body Dry ring shape oil storage tank (4), the head end of bush body offer head end dashpot (5), and the tail end of bush body offers tail end Dashpot (6).

2. a kind of rack bush with oil storage tank according to claim 1, it is characterised in that: the head end dashpot (5) It with tail end dashpot (6) is arranged along the axial direction interleaved of bush body.

3. a kind of rack bush with oil storage tank according to claim 1, it is characterised in that: the head end dashpot (5) Quantity be 4, about bush body head end center rotational symmetry, every be spaced 90 °.

4. a kind of rack bush with oil storage tank according to claim 1, it is characterised in that: the tail end dashpot (6) Quantity be 4, be divided into left and right two groups, every group includes two coplanar tail end dashpots (6), left and right two groups of tail end dashpots It is respectively distributed to the left and right sides of upper limit platform (1), lower limit platform (2), and left and right two groups of tail end dashpots are parallel to each other.

5. a kind of rack bush with oil storage tank according to claim 1, it is characterised in that: the head end dashpot (5) Slot bottom with tail end dashpot (6) is closed.