CN209579314U - A kind of transmission shaft self-locking fixing knot structure - Google Patents

Abstract

The utility model discloses a kind of transmission shaft self-locking fixing knot structure, for the transmission mating between input shaft and servo axis, collet including sandwich and for driving sandwich folding operation, wherein, one end of sandwich and servo axis Joint, the other end have the collet for carrying out radial folding operation to input shaft, and the outer peripheral surface of collet is in the conical surface, collet is actively socketed on sandwich periphery, and the top inner wall of collet is equipped with the folding guiding conical surface matched with the conical surface.The utility model is easily achieved the clamping locking to input shaft, clamping operation efficient stable.Designed by specific ground structure, have self-locking function under no external force, it is ensured that it is clamping effectively, the case where causing collet to loosen after preventing the supply of electrical source from interrupting.Whole design is ingenious, and versatility is stronger, is easy to be mounted in all kinds of axis connection toolings.

Description

A kind of transmission shaft self-locking fixing knot structure

Technical field

The utility model relates to a kind of transmission shaft self-locking fixing knot structures, belong to the linkage locking of electric boosting steering system axis The technical field of accessory.

Background technique

Electric boosting steering system (Electric Power Steering, abridge EPS) is that one kind is directly mentioned by motor For the power steering system of auxiliary torque, with traditional hydraulic power-assist steering system HPS(Hydraulic Power Steering it) compares, EPS system has lot of advantages.EPS is mainly by torque sensor, vehicle speed sensor, motor, deceleration The composition such as mechanism and electronic control unit (ECU).

The job stability and handling characteristic of electric boosting steering system are concerning the safety and vehicle performance to driving, therefore It needs effectively to detect the properties of diverter and the operations such as torque sensor calibrating.

And when carrying out calibration operation, the shaft coupling for carrying out input transmission power source and EPS input terminal is coupled, and can generally design Shaft coupling, generally pin locking between servo axis and the input shaft for inputting transmission power source in shaft coupling, clamping locking operation is cumbersome, And this case is to be dedicated to designing being easy to be mounted on shaft coupling carrying out clamping tooling to the input shaft of input transmission power source.

Utility model content

The purpose of this utility model is to solve above-mentioned the deficiencies in the prior art, cumbersome for the clamping frock clamping operation of tradition The problem of, propose a kind of transmission shaft self-locking fixing knot structure.

In order to achieve the above object, the technology employed by the present utility model is

A kind of transmission shaft self-locking fixing knot structure is coupled for the transmission between input shaft and servo axis,

Collet including sandwich and for driving the sandwich folding operation,

Wherein, one end of the sandwich and the servo axis Joint, the other end have for carrying out to the input shaft The collet of radial folding operation, the outer peripheral surface of the collet are in the conical surface,

The collet is actively socketed on the sandwich periphery, and the top inner wall of the collet is equipped with and the conical surface phase The folding of cooperation is oriented to the conical surface.

Preferably, the sandwich has hollow chamber, and the sliding block of sliding mating, the sliding block are equipped in the hollow chamber Have the linking arm of the wall surface and the collet Joint through the sandwich, has on the wall surface axial for the linking arm The sliding slot of displacement,

Adjustable spring is equipped between the sliding block and the bottom of the collet.

Preferably, the collet includes the axle sleeve being connected with the linking arm and matches lantern ring with the collet, described The folding guiding conical surface is located on the lantern ring inner wall, and the axle sleeve is detachably coupled with the lantern ring.

Preferably, the collet includes at least two having a clamping ends that radial folding is formed, and any clamping end Inner wall is equipped with circumferentially uniformly distributed several axial ribs.

Preferably, the collet includes the clamping end of four circumferential equal parts.

Preferably, the end of the sandwich and the servo axis Joint is equipped with radial convex ribs.

Preferably, the axis client of the radial convex ribs is equipped with through-hole, and mating has limit central siphon in the through-hole.

Preferably, the radial convex ribs be equipped with for the radial locking through hole of limit central siphon described in locking and for The pairs of locking hole slot of the servo axis Joint.

The beneficial effects of the utility model are mainly reflected in:

1. being easily achieved the clamping locking to input shaft, clamping operation efficient stable.

2. designing by specific ground structure, have self-locking function under no external force, it is ensured that it is clamping effective, it prevents electrical The case where source supply causes collet to loosen after interrupting.

3. whole design is ingenious, versatility is stronger, is easy to be mounted in all kinds of axis connection toolings.

Detailed description of the invention

Fig. 1 is a kind of schematic cross-sectional view of transmission shaft self-locking fixing knot structure of the utility model.

Fig. 2 is a kind of axial schematic diagram of transmission shaft self-locking fixing knot structure of the utility model.

Fig. 3 is a kind of structural schematic diagram of transmission shaft self-locking fixing knot structure of the utility model.

Fig. 4 is that end schematic diagram is coupled with the matched servo axis of sandwich in the utility model.

Specific embodiment

The utility model provides a kind of transmission shaft self-locking fixing knot structure.Below in conjunction with attached drawing to technical solutions of the utility model It is described in detail, so that it is more readily understood and grasps.

A kind of transmission shaft self-locking fixing knot structure, for the transmission mating between input shaft and servo axis, wherein input shaft is It is an externally input the input shaft of driving source, and servo axis is the servo axis in shaft coupling, which passes through this case Self-locking fixing knot structure is connected with input shaft, and the other end is connected with EPS input terminal.Transmission mating belongs to the prior art, herein It repeats no more, and the scheme of this case essentially consists in and replaces traditional locking bolt axis couplings by self-locking fixing knot structure.

As shown in Figure 1, including sandwich 1 and the collet 2 for driving the folding operation of sandwich 1.

Wherein, one end 11 of sandwich 1 and servo axis Joint, the other end 12 have for carrying out radial folding to input shaft The collet 3 of operation, the outer peripheral surface of collet 3 are in the conical surface 31.

Collet 2 is actively socketed on 1 periphery of sandwich, and the top inner wall of collet 2 is equipped with the folding matched with the conical surface 31 It is oriented to the conical surface 21.

Specifically, solid for lock pin first by one end 11 of sandwich 1 and servo axis Joint when carrying out shaft coupling operation It is fixed, or fixed by the fixture on servo axis.

Then by the lifting displacement of input driving source, so that passing through collet 2 in the collet 3 of its input shaft insertion sandwich 1 So that the folding guiding conical surface 21 drives the conical surface 31, realizes locking of the collet 3 to input shaft.

In a specific embodiment, sandwich 1 has hollow chamber 4, and the sliding block 5 of sliding mating is equipped in hollow chamber 4, Sliding block 5 has the linking arm of wall surface and 2 Joint of collet through sandwich 1, has the cunning for linking arm axial displacement on wall surface Slot is equipped with adjustable spring 9 between sliding block 5 and the bottom of collet 3.

The diagram of linking arm and sliding slot is omitted in attached drawing.

Specifically, telescoping mechanism can be set in servo axis, sliding block 5 can be driven to realize to collet 3 by telescoping mechanism Folding operation driving.

When carrying out clamping operation, the telescoping mechanism in servo axis is separated with 5 phase of sliding block, and adjustable spring is in elasticity at this time Recoil state moves sliding block 5 away from collet 3, so that the folding guiding conical surface 21 of collet 2 is matched with the conical surface 31, it is real The clamping operation to collet 3 is showed.

When carrying out collet opening operation, the telescoping mechanism in servo axis drives sliding block 5 towards collet 3, and sliding block 5 drives Collet 2 is displaced, so that the guiding conical surface 21 is separated with 31 phase of the conical surface, collet 3 opens, and input shaft can exit collet 3.

It is designed in this way, telescoping mechanism can be cooperated to be driven, in addition, due to the presence of adjustable spring, in no external force shape Under state, the meeting retaining clip conjunction state of collet 3 meets from the needs of locking.

In a specific embodiment, collet 2 includes the axle sleeve 22 being connected with linking arm and matches lantern ring with collet 3 23, the folding guiding conical surface 21 is located on 23 inner wall of lantern ring, and axle sleeve 22 and lantern ring 23 are detachably coupled.

On the one hand it is coupled, on the other hand can be met by the replacement of lantern ring 23 different convenient for the carrying of collet 2 and sandwich 1 The mating demand of diameter, certainly due to collet 3, the different-diameter span of satisfaction is smaller.

In a specific embodiment, collet 3 includes at least two clamping ends 6 for having radial folding formation, and is appointed The inner wall of one clamping end 6 is equipped with circumferentially uniformly distributed several axial ribs 7.

Axial ribs 7 can improve the mating reliability between input shaft.

In a specific embodiment, as shown in Fig. 2, collet 3 includes the clamping end 6 of four circumferential equal parts.This structure folder It keeps steady qualitative more excellent.

In a specific embodiment, as shown in figures 1 and 3, the end of sandwich 1 and servo axis Joint is equipped with radial convex Muscle 8.And the axis client of radial convex ribs 8 is equipped with through-hole, mating has limit central siphon 9 in through-hole.

The design of the radial direction convex ribs 8 and limit central siphon 9 is for meeting the needs of axially aligning, and limits central siphon 9 The telescoping mechanism being readily susceptible in above-described embodiment is designed to pass through.

For convenience of explanation with the mating of servo axis 10, as shown in figure 4, it has and radial convex ribs 8 and limit 9 phase of central siphon The auxiliary section 20 of cooperation.The auxiliary section 20 is a clamp structure, certainly can also be using other locking structures.

Finally, radial convex ribs 8 are equipped with the radial locking through hole 81 for locking limit central siphon 9 and are used for and servo axis The pairs of locking hole slot 82 of Joint.Radial locking through hole 81 and locking hole slot 82 are for providing the affixed use of lock pin, Radial locking through hole 81 and locking hole slot 82 are staggered.

By above description it can be found that a kind of transmission shaft self-locking fixing knot structure of the utility model, it is easy to accomplish to input The clamping locking of axis, clamping operation efficient stable.It is designed by specific ground structure, has self-locking function under no external force, Ensure it is clamping effectively, the case where causing collet to loosen after preventing the supply of electrical source from interrupting.Whole design is ingenious, versatility compared with By force, it is easy to be mounted in all kinds of axis connection toolings.

The technical solution of the utility model is fully described above, it should be noted that the tool of the utility model Body embodiment is simultaneously not limited by the description set out above, and those skilled in the art exist according to the Spirit Essence of the utility model All technical solutions that structure, method or function etc. are formed using equivalents or equivalent transformation, all fall within this reality Within novel protection scope.

Claims (8)

1. a kind of transmission shaft self-locking fixing knot structure, for the transmission mating between input shaft and servo axis, it is characterised in that:

Collet including sandwich and for driving the sandwich folding operation,

Wherein, one end of the sandwich and the servo axis Joint, the other end have radial for carrying out to the input shaft The collet of operation is opened and closed, the outer peripheral surface of the collet is in the conical surface,

The collet is actively socketed on the sandwich periphery, and the top inner wall of the collet is equipped with to be matched with the conical surface Folding be oriented to the conical surface.

2. a kind of transmission shaft self-locking fixing knot structure according to claim 1, it is characterised in that:

The sandwich has hollow chamber, and the sliding block of sliding mating is equipped in the hollow chamber, and the sliding block has through institute The wall surface of sandwich and the linking arm of the collet Joint are stated, has the cunning for the linking arm axial displacement on the wall surface Slot,

Adjustable spring is equipped between the sliding block and the bottom of the collet.

3. a kind of transmission shaft self-locking fixing knot structure according to claim 2, it is characterised in that:

The collet includes the axle sleeve being connected with the linking arm and matches lantern ring, the folding guide cone with the collet Face is located on the lantern ring inner wall, and the axle sleeve is detachably coupled with the lantern ring.

4. a kind of transmission shaft self-locking fixing knot structure according to claim 1, it is characterised in that:

The collet includes at least two clamping ends for having radial folding formation, and the inner wall of any clamping end is equipped with circumferentially Uniformly distributed several axial ribs.

5. a kind of transmission shaft self-locking fixing knot structure according to claim 4, it is characterised in that:

The collet includes the clamping end of four circumferential equal parts.

6. a kind of transmission shaft self-locking fixing knot structure according to claim 1, it is characterised in that:

The end of the sandwich and the servo axis Joint is equipped with radial convex ribs.

7. a kind of transmission shaft self-locking fixing knot structure according to claim 6, it is characterised in that:

The axis client of the radial direction convex ribs is equipped with through-hole, and mating has limit central siphon in the through-hole.

8. a kind of transmission shaft self-locking fixing knot structure according to claim 7, it is characterised in that:

The radial direction convex ribs are equipped with for the radial locking through hole of limit central siphon described in locking and are used for and the servo axis phase Affixed pairs of locking hole slot.