CN215552343U - Adjustment mechanism and vehicle of semi-axis shield - Google Patents

Abstract

The utility model provides a half shaft dustproof cover adjusting mechanism and a vehicle, wherein the half shaft dustproof cover adjusting mechanism comprises: the device comprises a bushing, an elastic piece, an adjusting component and a dust cover; a matching section and an adjusting section are formed on the bushing, and the matching section is used for matching with an oil seal lip of the counterpart piece; the dustproof cover is sleeved on the adjusting section, the opening end of the dustproof cover faces the matching section, the elastic piece is sleeved on the adjusting section, one end of the elastic piece is abutted against the end face of the matching section, and the other end of the elastic piece is abutted against the inner end face of the dustproof cover; the adjusting assembly is sleeved on the adjusting section and located on one side, away from the matching section, of the dust cover, the adjusting assembly abuts against the outer end face of the dust cover to limit the dust cover, and the adjusting assembly is used for adjusting the axial position of the dust cover. Compared with the prior art, the mounting tolerance is compensated, the dust cover is prevented from losing effect due to too large or too small axial clearance between the dust cover and the oil seal, the failure of the oil seal is avoided, and the running safety of the vehicle is improved.

Description

Adjustment mechanism and vehicle of semi-axis shield

Technical Field

The utility model relates to the technical field of vehicles, in particular to an adjusting mechanism of a half-shaft dustproof cover and a vehicle.

Background

Front-drive vehicles are currently in widespread use, by "front-drive" it is meant that the engine is arranged in front of the vehicle, usually in the engine compartment placed in front of the driver, and the vehicle drive wheels are the front wheels. In this arrangement, since the distance between the engine and the driving wheel is very small, the differential is integrated into the transmission in addition to the transmission and the engine assembly power lying in the engine compartment, so as to meet the space requirement of the whole vehicle.

The half shaft is a shaft that transmits torque between the differential and the drive wheels, and one end of the shaft is typically connected by splines to a half gear in the differential, and the other end is connected to a wheel hub. For a front-drive vehicle, since the differential is mounted inside the transmission, an oil seal is required to be mounted at the connection part of the differential and the half shaft for sealing so as to prevent lubricating oil or lubricating grease from leaking or leaking.

The oil seal may be out of work due to foreign matters such as dust and powder, the braking of the vehicle is affected, and the potential safety hazard of driving exists. Therefore, a dust cap is generally mounted on the axle shaft to prevent foreign matter from entering the dust cap and causing failure of the oil seal. Wherein, the axial position of shield plays crucial effect to the leakproofness of oil blanket, and prior art, the position of shield can not be adjusted, if shield and oil blanket complex axial clearance too big or undersize, the shield all can lose the effect to produce the too early inefficacy of oil blanket and unable the use.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to an adjusting mechanism for a half-axle dust cap and a vehicle, so as to solve the technical problem that the dust cap is disabled due to the fact that the position of the dust cap cannot be adjusted and the axial clearance between the dust cap and an oil seal is too large or too small.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

an adjustment mechanism for a half shaft dust cap, comprising: the device comprises a bushing, an elastic piece, an adjusting component and a dust cover;

a matching section and an adjusting section are formed on the bushing, and the matching section is used for matching with an oil seal lip of the counterpart piece;

the dustproof cover is sleeved on the adjusting section, and the opening end of the dustproof cover faces the matching section;

the elastic piece is sleeved on the sliding section, one end of the elastic piece abuts against the end face of the matching section, and the other end of the elastic piece abuts against the inner end face of the dustproof cover;

the adjusting component is sleeved on the adjusting section and located on one side, away from the matching section, of the dust cover, the adjusting component abuts against the outer end face of the dust cover to limit the dust cover, and the adjusting component is used for adjusting the axial position of the dust cover.

Further, the adjusting assembly comprises a pressing sleeve and a first locking piece;

the adjusting section comprises a sliding section and a connecting section, and the sliding section is positioned between the matching section and the connecting section;

the dustproof cover and the elastic piece are respectively sleeved on the sliding section;

the compressing sleeve is sleeved on the sliding section and positioned on one side, away from the matching section, of the dust cover, the compressing sleeve is in clearance fit with the sliding section, and the first locking piece is sleeved on the connecting section and is in threaded connection with the connecting section;

one end, close to the matching section, of the pressing sleeve abuts against the outer end face of the dustproof cover, and the first locking piece abuts against one end, far away from the matching section, of the pressing sleeve so as to limit the dustproof cover.

Further, the adjusting mechanism of the half-shaft dust cover further comprises: a second locking member;

the second retaining member cover is located on the part of linkage segment, and is located first retaining member is kept away from compress tightly one side of cover, the second retaining member with linkage segment threaded connection, the second retaining member butt in the one end that compresses tightly the cover is kept away from to first retaining member.

Further, the first locking member and the second locking member are both locking nuts;

the inner surface of the locking nut is provided with first threads, the outer surface of the connecting section is provided with second threads, and the second threads are matched with the first threads.

Further, the diameter of the matching section is larger than that of the sliding section;

the inner diameter of the dustproof cover is larger than the diameter of the matching section;

the diameter of the sliding section is larger than that of the connecting section.

Further, the length of the connecting section is greater than or equal to that of the sliding section.

Further, in the axial direction, the bushing further comprises an abutment section;

the abutting section is located between the matching section and the sliding section, the diameter of the abutting section is larger than that of the matching section, and one end of the elastic piece abuts against the end face, far away from the matching section, of the abutting section.

Further, the elastic piece is a compression spring;

the elasticity of the elastic piece is smaller than the friction force between the adjusting component and the adjusting section.

Further, the adjusting mechanism of the half-shaft dust cover further comprises: a half shaft;

the bushing is press-mounted on the half shaft.

The adjusting mechanism of the half shaft dust cover has at least the following advantages:

the axial position of this embodiment shield can be adjusted through adjusting part to make shield and the oil blanket complex axial clearance of adversary's piece be located the clearance within range of requirement, compare with prior art, compensatied installation tolerance, avoided the shield too big or undersize of shield and oil blanket complex axial clearance and the shield that leads to losing effect, thereby avoided the oil blanket to become invalid, improved the security that the vehicle went.

Another object of the present invention is to provide a vehicle including the above half axle dust cap adjustment mechanism.

Compared with the prior art, the vehicle has the following advantages:

the vehicle and the adjusting mechanism of the half-shaft dustproof cover have the same advantages compared with the prior art, and the detailed description is omitted.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic three-dimensional structure diagram of an adjusting mechanism of a half-shaft dust cap according to an embodiment of the utility model;

FIG. 2 is one of schematic structural views from a perspective of an adjustment mechanism for a half-shaft dust cap in accordance with an embodiment of the present invention;

FIG. 3 is a second schematic view of a perspective view of an adjustment mechanism for a half-shaft dust cap in accordance with an embodiment of the present invention;

FIG. 4 is a schematic view of the construction of a bushing for an adjustment mechanism of a half shaft dust cap in accordance with an embodiment of the present invention;

FIG. 5 is a schematic structural view of one perspective of a dust cap of the adjustment mechanism of the axle shaft dust cap in accordance with the embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of A-A in FIG. 5;

FIG. 7 is a schematic structural diagram illustrating a perspective view of a clamping sleeve of an adjustment mechanism for a half-shaft dust cap in accordance with an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of another view angle of a pressing sleeve of an adjusting mechanism of a half-shaft dust cover according to an embodiment of the utility model.

FIG. 9 is a schematic structural view from one perspective of a first (second) locking member of the adjustment mechanism of the half-shaft dust cap in accordance with the embodiment of the present invention.

Description of reference numerals:

1-half shaft, 11-spline, 2-bush, 20-matching section, 21-abutting section, 200-adjusting section, 22-sliding section, 23-connecting section, 3-elastic piece, 4-adjusting component, 41-pressing sleeve, 42-first locking piece, 5-dust cover, 51-ring, 52-top plate, 521-through hole, 6-second locking piece and 7-wrench.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the prior art, because of the influence of the processing level, the axial sliding distance of the half-shaft dust cap and the oil seal is difficult to control in a required range (generally 2mm), after the manufacture of each part is completed, the axial position of the dust cap cannot be adjusted, once the axial clearance between the dust cap and the oil seal is too large or too small, the dust cap can lose the effect, the oil seal fails too early and cannot be used, the braking of a vehicle is influenced, and the driving safety potential hazard exists.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In an embodiment of the present invention, the present embodiment provides an adjusting mechanism of a half axle dust cap, and referring to fig. 1 to 4, the adjusting mechanism of the half axle dust cap may specifically include a bushing 2, an elastic member 3, an adjusting assembly 4, and a dust cap 5; the bush 2 is provided with a matching section 20 and an adjusting section 200, and the matching section 20 is used for matching with an oil seal lip of a counterpart; the dustproof cover 5 is sleeved on the sliding section 22, and the opening end of the dustproof cover 5 faces the matching section 20; the elastic piece 3 is sleeved on the sliding section 22, one end of the elastic piece 3 is abutted against the end surface of the matching section 20, and the other end is abutted against the inner end surface of the dust cover 5; adjusting part 4 overlaps and locates on adjusting section 200, and is located the shield 5 and keeps away from one side of cooperation section 20, and adjusting part 4 butt in the outer terminal surface of shield 5 to carry on spacingly to shield 5, wherein, adjusting part 4 is used for adjusting the axial position of shield 5.

Specifically, as shown in fig. 1 to 4, the bush 2 is formed with a fitting section 20 and an adjusting section 200, and the fitting section 20 is mainly used for lip fitting with an oil seal (also referred to as an oil deflector or a seal) of a counterpart (e.g., a differential, a transmission, a speed reducer, a transfer case, or the like in a vehicle).

Specifically, as shown in fig. 1 to fig. 3, the elastic element 3 is sleeved on the outer wall of the adjusting section 200, and specifically, is sleeved on a portion of the outer wall of the adjusting section 200 close to the matching section 20. The dust cap 5 is also sleeved on the outer wall of the adjusting section 200, and specifically sleeved on a part of the outer wall of the adjusting section 200 close to the matching section 20, and an opening end of the dust cap 5 faces the matching section 20, as can be seen from the figure, the dust cap 5 covers at least a part of the elastic member 3, that is, the elastic member 3 is at least partially located in the dust cap 5, so that one end of the elastic member 3 can abut against an end surface of the matching section 20 close to the sliding section 22, and the other end can abut against an inner end surface of the dust cap 5, that is, in the axial direction, the elastic member 3 is located between the matching section 20 and the inner end surface of the dust cap 5. The dust cap 5 in practical use comprises an inner wall and an outer wall, where the inner end surface refers to the end surface of the inner wall of the dust cap 5 opposite to the open end.

Specifically, the elastic member 3 is a mechanical component that operates by elasticity, and is deformed by an external force and returns to its original shape after the external force is removed.

Specifically, as shown in fig. 1 to fig. 3, the adjusting assembly 4 is sleeved on the adjusting section 200 and located on one side (shown as the right side) of the dust cap 5 away from the matching section 20, and the adjusting assembly 4 abuts against the outer end surface of the dust cap 5 to limit the dust cap 5 and limit the dust cap at the axial target position. It can be seen that the axial position of shield 5 of this embodiment can be adjusted through adjusting part 4 to make shield 5 and oil blanket complex axial clearance be located the clearance within range of requirement, compare with prior art, compensatied installation tolerance, avoided shield 5 too big or the undersize and the shield 5 that leads to with oil blanket complex axial clearance to lose effect, thereby avoid the oil blanket to become invalid, improve the security that the vehicle travel.

Specifically, the axial position of shield 5 can be adjusted to adjusting part 4, in practical application, adjusting part 4 can be with regulation section 200 screw-thread fit, adjust the axial position of shield 5 through rotatory adjusting part 4, or, adjusting part 4 and regulation section 200 sliding connection, adjust the axial position of shield 5 through slip adjusting part 4, when adjusting part 4 slides to the target location of regulation section 200, can carry out spacingly to adjusting part 4 through buckle, cassette or clamp etc. this embodiment can not do the restriction to the concrete mode that adjusting part 4 adjusted shield 5, specifically can prescribe a limit according to the actual demand. It should be noted that, for the specific sliding connection manner of the adjusting assembly 4 and the adjusting section 200, the sliding connection manner known to those skilled in the art may be applicable, for example, the adjusting assembly 4 and the adjusting section 200 may be implemented by the cooperation of a sliding chute and a sliding block, or may be implemented by the cooperation of a roller and a sliding rail, or the adjusting assembly and the adjusting section are in clearance fit.

For ease of understanding, the present embodiment illustrates a specific adjustment process of the dust cap 5 by taking the adjustment assembly 4 and the adjustment segment 200 as an example: as shown in fig. 3, when the adjusting assembly 4 is rotated clockwise (or counterclockwise), the adjusting assembly 4 moves toward the engaging portion 20 (to the left) and presses the dust cap 5 to move to the left, in the process, the dust cap 5 presses the elastic member 3, and the elastic member 3 is compressed until the dust cap 5 is adjusted to the axial target position (for example, the dust cap 5 is moved from the position a to the position b as shown), and the rotation is stopped. Conversely, when the adjusting assembly 4 is rotated counterclockwise (or clockwise), the adjusting assembly 4 moves away from the engaging segment 20 (to the right), and the elastic member 3 is gradually unfolded, the elastic member 3 presses the dust cap 5 to move to the right until the dust cap 5 is adjusted to the axial target position (for example, the dust cap 5 is moved from the position a to the position c), and the rotation is stopped.

In an embodiment of the present invention, as shown in fig. 1 to 4, the adjusting assembly 4 may include a pressing sleeve 41 and a first locking member 42; the adjustment section 200 may include a skid section 22 and a connection section 23, the skid section 22 being located between the mating section 20 and the connection section 23; the dust cover 5 and the elastic element 3 are respectively sleeved on the sliding section 22; the pressing sleeve 41 is sleeved on the sliding section 22 and is positioned on one side of the dust cover 5 away from the matching section, the pressing sleeve 41 is in clearance fit with the sliding section 22, and the first locking piece 42 is sleeved on the connecting section 23 and is in threaded connection with the connecting section 23; the pressing sleeve 41 is close to one end of the matching section 20 and abuts against the outer end face of the dust cover 5, and the first locking piece 42 abuts against one end, far away from the matching section 20, of the pressing sleeve 41 so as to limit the dust cover 5.

Specifically, as shown in fig. 1-4, the adjustment section 200 may include a skid section 22 and a connection section 23, the skid section 22 being located between the mating section 20 and the connection section 23. The dust cover 5 and the elastic element 3 are respectively sleeved on the outer wall of the sliding section 22 close to the matching section 20, the compressing sleeve 41 is sleeved on the outer wall of the sliding section 22 far away from the matching section 20 (the dust cover 5 is not sleeved), and the compressing sleeve is located on one side of the dust cover 5 far away from the matching section. The clamping sleeve 41 is a clearance fit with the skid 22, i.e. the clamping sleeve 41 can be moved relative to the skid 22. First retaining member 42 specifically overlaps and locates on the partial outer wall of linkage segment 23, first retaining member 42 and linkage segment 23 threaded connection, it is located between shield 5 and the first retaining member 42 to compress tightly cover 41, first retaining member 42 butt in the one end (the right-hand member of the figure) of keeping away from the cooperation section that compresses tightly cover 41, the one end (the left end of the figure) that compresses tightly cover 41 is close to the cooperation section butt in the outer terminal surface of shield 5, this outer terminal surface is the terminal surface relative with the terminal surface in shield 5, like this, first retaining member 42 just can carry on spacingly to shield 5, and, can adjust the axial position of shield 5 through rotating first retaining member 42.

Specifically, the specific adjustment process of the dust cap 5 is as follows: as shown in fig. 3, when the first locking member 42 is rotated clockwise (or counterclockwise), the first locking member 42 moves toward the engaging section 20 (to the left) and presses the first locking member 42 to move the dust cover 5 to the left, at which time the dust cover 5 presses the elastic member 3, and the elastic member 3 is compressed until the dust cover 5 is adjusted to the axial target position (e.g., the dust cover 5 is moved from the a position to the b position as shown), and the rotation of the first locking member 642 is stopped. Conversely, when the first locking member 42 is rotated counterclockwise (or clockwise), the first locking member 42 moves away from the engagement section 20 (to the right), and the elastic member 3 gradually expands, the elastic member 3 presses the dust cover 5 to the right until the dust cover 5 is adjusted to the axial target position (e.g., the dust cover 5 is moved from the a position to the c position as shown), and the rotation of the first locking member 42 is stopped.

It should be noted that the pressing sleeve 41 and the first locking member 42 may be an integrally formed structure, or may be two separate components, and a specific structure may be set according to actual requirements, which is not limited in this embodiment.

In an alternative embodiment of the present invention, referring to fig. 5 and 6, the dust cap 5 may be a ring-shaped structure, the dust cap 5 includes a ring 51 and a top plate 52, the top plate 52 covers an end surface of the ring 51, so that the ring 51 has an open end, and the top plate 52 is opposite to the open end. In practice, the ring 51 and the top plate 52 are integrally formed, so that the dust cover 5 has high strength and is convenient to process. As shown in fig. 2 and 3, the other end of the elastic member 3 abuts against the inner end surface of the top plate 52 of the dust cap 5, and one end of the pressing sleeve 41 abuts against the outer end surface of the top plate 52 of the dust cap 5. In order to fit the dust cap 5 to the bush 2, a through hole 521 is provided in a position where the top plate 52 of the dust cap 5 faces the bush 2. Of course, the specific shape of the dust cover 5 may not be limited in this embodiment, and may be set according to the specific shape of the sliding section.

In an alternative embodiment of the present invention, referring to fig. 7 and 8, since the bushing 2 is generally cylindrical in shape, in order to fit the pressing sleeve 41 to the sliding section of the bushing 2, the pressing sleeve 41 is also cylindrical in shape, the inner wall of the pressing sleeve 41 is in clearance fit with the outer wall of the sliding section 22 of the bushing 2, the clearance may be no greater than 1mm, and the runout tolerance of the sliding section 22 should be less than 0.06mm, so that when the pressing sleeve 41 moves on the bushing 2, the dust cap 5 can be moved to the target position to compensate for the installation tolerance of the prior art.

In an embodiment of the present invention, as shown in fig. 1 to 3, the adjusting mechanism further includes: a second locking member 6; the second locking member 6 is sleeved on the connecting section 23 and located on one side of the first locking member 42 away from the pressing sleeve 41, the second locking member 6 is in threaded connection with the connecting section 23, and the second locking member 6 abuts against one end of the first locking member 42 away from the matching section 20.

Specifically, in order to prevent the first locking member 42 from loosening and affecting the axial position of the dust cover 5, the second locking member 6 is further provided in the embodiment, the second locking member 6 is sleeved on the portion of the connecting section 23 away from the matching section 20, and since the first locking member 42 is sleeved on the portion of the connecting section 23 close to the matching section 20, it can be seen that the second locking member 6 is located on the side of the first locking member 42 away from the pressing sleeve 41. Since the second locking member 6 is screw-engaged with the connecting section 23, in the case where the dust cover 5 has been adjusted to the target position, by rotating the second locking member 6, the second locking member 6 abuts on the end (right end in the drawing) of the first locking member 42 remote from the engaging section 20.

Alternatively, referring to fig. 9, both the first locking member 42 and the second locking member 6 are lock nuts; the inner surface of the locking nut is provided with a first thread, the outer surface of the connecting section 23 is provided with a second thread, and the second thread is matched with the first thread.

Specifically, the first locking member 42 and the second locking member 6 are both locking nuts, so that the locking nuts can be standard components, the production is convenient, and the cost is low. In practical applications, the inner surface of the lock nut is provided with a first thread, the outer surface of the connecting section 23 is provided with a second thread, and the second thread is matched with the first thread, so that the first (second) locking member and the connecting section 23 are matched with the second thread through the first thread, and the first locking member 42 and the second locking member 6 are rotated, and the first locking member 42 and the second locking member 6 can move along the axial direction. Wherein, because the lock nut is the standard component, the second screw thread on the connecting section 23 is also convenient for processing, thereby can save the processing cost.

Further, as shown in fig. 9, the cross-sectional shape of the locking thread is hexagonal, so that as shown in fig. 1, the locking nut can be adjusted by a wrench 7 with an opening on the side, the operation is convenient, and the installation and detachment efficiency is high.

In the implementation of the utility model, the diameter of the matching section 20 is larger than that of the sliding section 22, and the inner diameter of the dust cover 5 is larger than that of the matching section 20; the diameter of the skid section 22 is larger than the diameter of the connection section 23.

Specifically, as shown in fig. 1 to 3, the diameter of the fitting section 20 is larger than that of the sliding section 22, so that when the elastic member 3 is sleeved on the sliding section 22, one end (left end) of the elastic member 3 can abut against the end surface of the fitting section 20 close to the sliding section 22. The specific value of the diameter of the fitting section 20 being larger than the diameter of the sliding section 22 is not limited in this embodiment, and may be set according to the actual situation.

Specifically, as shown in fig. 1 to 3, the inner diameter of the dust cap 5 is larger than the diameter of the fitting section 20, so that the dust cap 5 can move toward the fitting section 20 to a target position, and the axial clearance of the dust cap 5 fitted with the oil seal is within a required clearance range. For the specific value that the inner diameter of the dust cap 5 is larger than the diameter of the fitting section 20, this embodiment may not be limited, and may be specifically set according to the actual situation.

Specifically, as shown in fig. 4, the diameter of the sliding section 22 is larger than that of the connecting section 23 for the bushing 2, so that the pressing sleeve 41 in the adjusting assembly 4 can also be moved away from the direction of the fitting section 20 (rightward in the drawing) while ensuring clearance fit with the sliding section 22, as shown in fig. 2 and 3, so that the dust cover 5 can be moved to the target position. The specific value of the diameter of the sliding section 22 being greater than the diameter of the connecting section 23 is not limited in this embodiment, and may be set according to the actual situation.

In the practice of the utility model, the length of the connecting section 23 is equal to or greater than the length of the skid section 22.

In practical applications, since the axial position of the dust cap 5 generally needs to be adjusted in a small range, in order to make the structure of the adjusting mechanism of the dust cap 5 of the axle shaft 1 more compact, as shown in fig. 2 to 5, the length of the connecting section 23 is greater than or equal to the length of the sliding section 22. Moreover, since the diameter of the sliding section 22 is larger than that of the connecting section 23, after the pressing sleeve 41 is sleeved on the sliding section 22, if the axial position of the dust cap 5 needs to be moved rightwards, the pressing sleeve 41 can also use part of the length of the connecting section 23.

In the practice of the utility model, in the axial direction, as shown in fig. 2 to 4, the bush 2 further comprises an abutment section 21; the abutting section 21 is located between the matching section 20 and the sliding section 22, the diameter of the abutting section 21 is larger than that of the matching section 20, and one end of the elastic element 3 abuts against the end face, away from the matching section 20, of the abutting section 21.

Specifically, in order to limit the position of oil sealing on the hand piece, the bushing 2 further comprises an abutting section 21, the abutting section 21 is located between the matching section 20 and the sliding section 22, two ends of the abutting section 21 are respectively connected with the matching section 20 and the sliding section 22, and the diameter of the abutting section 21 is larger than that of the matching section 20. As can be seen in fig. 2 and 3, one end of the elastic member 3 abuts on an end surface (right end surface) of the abutting section 21 away from the engaging section 20.

In an alternative embodiment of the utility model, the elastic member 3 is a spring or a rubber block; the elastic force of the elastic member 3 is smaller than the frictional force between the adjustment assembly 4 and the adjustment segment 200.

Specifically, the elastic member 3 may be a spring (e.g., a compression spring, a belleville spring, etc.), a rubber block, or other elastic components, and the specific structure of the elastic member 3 in this embodiment may not be limited, and may be limited according to actual requirements.

Specifically, the present embodiment is described by taking the elastic member 3 as a spring, and the elastic force F of the spring is K × X (N), and F < Nc (N), where K is the stiffness (N/mm) of the compression spring, X is the deformation amount of the compression spring, and Nc is the friction force between the first locking member 42 in the adjustment assembly 4 and the connecting section 23 in the adjustment section 200. If the initial state of the spring is a compressed state, the adjusting assembly 4 presses against the dust cap 5 (specifically, the first locking member 42 presses against the pressing sleeve 41, and the pressing sleeve 41 presses against the outer end surface of the dust cap 5), the spring provides a back supporting force towards the adjusting assembly to the inner end surface of the dust cap 5, and since F < Nc, the adjusting assembly 4 can limit the axial position of the dust cap 5.

Further, the distance that the dust cap 5 moves in the axial direction is correlated with the amount of deformation of the spring.

In practical applications, when the deformation amount X of the spring changes, the elastic force F of the spring changes, so that if the initial state of the spring is a compressed state, the compression amount X of the spring is₀The spring force of the spring is F₀If the dust cap 5 needs to be adjusted to the left to the target position, the spring is compressed by the inner end surface of the dust cap 5, and if the dust cap 5 needs to be adjusted to the left to the target position (the dust cap 5 moves from the position a to the position b shown in the figure), the amount of compression of the spring is X, as shown in fig. 3, for example₀+L₁At this time, the spring force of the spring is F₁It can be seen that the axial distance that the dust cap 5 moves is L₁。

In particular, since the second locking member 6 prevents the first locking member 42 from being loosened, the maximum elastic force of the spring should be less than the sum of the frictional forces between the two locking members and the connecting section 23, respectively. The maximum elastic force Fmax of compression is K × Xmax, Xmax is the maximum compression amount or elongation, and in the present embodiment, Xmax is X₀₊L, wherein L is the maximum distance that the dust cap 5 can move axially.

In an embodiment of the present invention, the adjusting mechanism of the half-shaft dust cap further includes: a half shaft 1; and the bush 2 is pressed on the half shaft 1.

Specifically, as shown in fig. 1 to 3, the bushing 2 is press-fitted to an outer wall of a certain section of the axle shaft 1, wherein the press-fitting means: in the assembly process of pressing two parts with interference fit to the fit position, it can be seen that the inner wall of the bushing 2 is in interference fit with the outer wall of the half shaft 1.

It should be noted that, as shown in fig. 1 to 3, splines 11 are mounted on one end of the axle shaft 1, and the bushing 2 is mounted on the end of the axle shaft 1, for example, one end of the axle shaft 1 may be geared with the axle shaft 1 of a vehicle differential via the splines 11, and the other end (not shown) may be coupled with a hub of a wheel. In practical application, the power of the engine enters a differential mechanism through a transmission shaft, and the differential mechanism drives the half shafts 1 to drive wheels respectively. Of course, the specific connection relationship between the two ends of the plate axle and the vehicle needs to be set according to the type and specific structure of the vehicle, and the above is only one connection relationship commonly used for half axles.

In practical applications, since engines of different vehicle types have different lengths, the half shafts 1 have various structures in order to match the length change of the engines, the versatility of the half shafts 1 is low, and the half shafts 1 are sometimes newly developed for a small amount of change, which results in high development cost. Because the axial position of the dust cover 5 on the half shaft 1 of this example can be adjusted, as long as install on the half shaft 1 with the dust cover 5 in prior art, the adjustment mechanism of the half shaft 1 dust cover 5 of this embodiment can all adopt, and it is thus clear that the adjustment mechanism of the half shaft 1 dust cover 5 of this embodiment can be applicable to multiple motorcycle types, and the commonality is strong, has reduced development cost.

The adjusting mechanism of the half shaft dust cover has at least the following advantages:

the axial position of the shield of this embodiment can be adjusted through first retaining member to make shield and oil blanket complex axial clearance be located the clearance within range of requirement, compare with prior art, compensatied installation tolerance, avoided the shield too big or the undersize of shield and oil blanket complex axial clearance and the shield that leads to lose effect, thereby avoid the oil blanket to become invalid, improve the security that the vehicle travel.

Moreover, each part in the adjusting mechanism of the half-shaft dustproof cover is simple in structure, simple to process and manufacture, convenient and fast to install, and capable of saving production cost.

In addition, the adjusting mechanism of the half-shaft dustproof cover has strong universality and can be suitable for various vehicle types.

In the embodiment of the utility model, the utility model further provides a vehicle which particularly comprises the adjusting mechanism of the half-shaft dust cover.

Specifically, the vehicle includes the above-mentioned adjusting mechanism for the axle shaft dust cover, and the detailed structure and the operation principle of the adjusting mechanism for the axle shaft dust cover have been described above, and are not described herein again.

The vehicle of the embodiment has at least the following advantages:

the advantages of the vehicle are the same as those of the adjusting mechanism of the half-shaft dustproof cover, and the detailed description is omitted here.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. An adjustment mechanism of semi-axis shield, characterized by includes: the device comprises a bushing (2), an elastic piece (3), an adjusting component (4) and a dust cover (5);

a matching section (20) and an adjusting section (200) are formed on the bushing (2), and the matching section (20) is used for matching with an oil seal lip of a counterpart;

the dustproof cover (5) is sleeved on the adjusting section (200), and the opening end of the dustproof cover (5) faces the matching section (20);

the elastic piece (3) is sleeved on the adjusting section (200), one end of the elastic piece (3) abuts against the end face of the matching section (20), and the other end of the elastic piece (3) abuts against the inner end face of the dust cover (5);

adjusting part (4) cover is located on adjusting section (200), and is located shield (5) are kept away from one side of cooperation section (20), adjusting part (4) support press in the outer terminal surface of shield (5), in order to right shield (5) carry out spacingly, wherein, adjusting part is used for adjusting the axial position of shield (5).

2. The adjusting mechanism according to claim 1, characterized in that the adjusting assembly (4) comprises a pressing sleeve (41) and a first locking piece (42);

the adjustment section (200) comprises a skid section (22) and a connection section (23), the skid section (22) being located between the mating section (20) and the connection section (23);

the dustproof cover (5) and the elastic piece (3) are respectively sleeved on the sliding section (22);

the pressing sleeve (41) is sleeved on the sliding section (22) and is positioned on one side, away from the matching section (20), of the dust cover (5), the pressing sleeve (41) is in clearance fit with the sliding section (22), and the first locking piece (42) is sleeved on the connecting section (23) and is in threaded connection with the connecting section (23);

one end, close to the matching section (20), of the pressing sleeve (41) is abutted against the outer end face of the dustproof cover (5), and the first locking piece (42) is abutted against one end, far away from the matching section (20), of the pressing sleeve (41) so as to limit the dustproof cover (5).

3. The adjustment mechanism of claim 2, wherein the adjustment mechanism of the axle shaft dust cap further comprises: a second locking member (6);

second retaining member (6) cover is located on linkage segment (23), and is located first retaining member (42) is kept away from compress tightly one side of cover (41), second retaining member (6) with linkage segment (23) threaded connection, second retaining member (6) butt in first retaining member (42) is kept away from the one end that compresses tightly cover (41).

4. The adjustment mechanism for half shaft dust caps according to claim 3, wherein the first locking member (42) and the second locking member (6) are each a lock nut;

the inner surface of the locking nut is provided with first threads, the outer surface of the connecting section (23) is provided with second threads, and the second threads are matched with the first threads.

5. The adjustment mechanism for half shaft dust caps as claimed in claim 2, wherein the diameter of the engagement section (20) is larger than the diameter of the sliding section (22);

the inner diameter of the dustproof cover (5) is larger than the diameter of the matching section (20);

the diameter of the sliding section (22) is larger than that of the connecting section (23).

6. The adjusting mechanism of the half shaft dust cover according to claim 5, characterized in that the length of the connecting section (23) is equal to or greater than the length of the sliding section (22).

7. The adjustment mechanism of the half shaft dust cap according to claim 2, wherein the bushing (2) further comprises: an abutment section (21);

the abutting section (21) is located between the matching section (20) and the sliding section (22), the diameter of the abutting section (21) is larger than that of the matching section (20), and one end of the elastic piece (3) abuts against the end face, away from the matching section (20), of the abutting section (21).

8. The adjusting mechanism of the half-shaft dust cap according to claim 1, characterized in that the elastic member (3) is a spring or a rubber block;

the elasticity of the elastic part (3) is smaller than the friction force between the adjusting component (4) and the adjusting section (200).

9. The adjustment mechanism for a half axle dust cover according to claim 1, characterized by further comprising: a half shaft (1);

the bushing (2) is pressed on the half shaft (1).

10. A vehicle characterized by comprising the adjusting mechanism of the half-shaft dust cover according to claims 1 to 9.

Images