CN216478546U - Universal joint dust cover - Google Patents

Abstract

The utility model relates to an universal joint dust cover, including seal cover, body and sealed the pad, the hardness of body is greater than seal cover and the sealed material that fills up, the seal cover is fixed in the upper end of body, and sealed pad is installed in the interior shaft shoulder department of body. The body with higher hardness mainly plays a role in supporting and matching with the steering input shaft, so that a matching gap is not easy to occur between the body and the steering input shaft. The seal cover mainly plays with top automobile body sealing effect, sealed the interior shaft shoulder department of mainly sealing up at the shaft shoulder of steering input shaft and body, in addition the utility model discloses when installing on the universal joint and using, wholly can be followed the axis direction compression, inhale discoid seal cover this moment and can adsorb on the automobile body panel beating of top, sealed the pad also can be compressed tightly, the dust cover is with the cooperation department of automobile body and this internal shaft shoulder and the difficult clearance that appears of cooperation department of input shaft. So the utility model has the advantages of long service life, good sealing and waterproof performance, excellent sound insulation and dustproof performance.

Description

Universal joint dust cover

Technical Field

The utility model relates to an universal joint dust cover.

Background

The universal joint adopts the oil blanket to add the dust cover to play sealed, dustproof effect usually, and the most whole rubber materials that are of present universal joint dust cover, and rubber materials itself is softer, intensity is lower, leads to the cooperation can have the clearance between dust cover and the steering input shaft, consequently easily leads to sealed position to leak, and the sound insulation effect is poor, get into impurity even, and wearing and tearing steering input shaft reduces steering input shaft life-span, influences whole car performance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a universal joint dust cover can have the technical problem in clearance in order to solve among the prior art between dust cover and the steering input shaft.

In order to achieve the above object, the utility model discloses a universal joint dust cover adopts following technical scheme:

the utility model provides a universal joint dust cover, includes seal cover, body and sealed the pad, the hardness of body is greater than seal cover and sealed hardness of filling up, the seal cover is fixed in the upper end of body, and the body includes upper segment and hypomere, and the internal diameter of hypomere is greater than the external diameter of upper segment, sealed pad installation is in the interior shaft shoulder department of upper segment and hypomere junction formation, the upper end of seal cover is sucking disc form in order to with the automobile body panel beating sealing connection of top.

The body includes the upper engaging lug of upper end, seal cover interference connection is in the upper end of body, and the up end of upper engaging lug is equipped with the boss, and the outer terminal surface of boss is the conical surface that the diameter is big end down.

And a downward sunken ring groove is processed in the middle of the boss.

The middle part of the sealing sleeve is of a hollow drum-shaped structure, the upper end of the sealing sleeve extends to the periphery to form an annular matching sheet, and the central part of the annular matching sheet is gradually sunken downwards to enable the inner wall surface of the annular matching sheet to be a curved surface.

The side wall of the lower section of the body is provided with a through groove to form a buckling position, the peripheral surface of the sealing gasket is provided with a buckling lug matched with the buckling position, and the buckling lug of the sealing gasket is fixedly arranged in the buckling position.

The outer peripheral surface of the sealing sleeve is provided with two buckling lugs which are arranged at an interval of 180 degrees, and the end part of one buckling lug extends outwards to form a detection end.

The upper end face and the lower end face of the sealing gasket are both provided with protrusions.

The shape of the bulge is semicircular.

And reinforcing ribs are distributed on the peripheral surface of the body at intervals along the circumferential direction of the body.

The utility model has the advantages as follows: the utility model discloses a universal joint dust cover, the great body of hardness mainly play support, with steering input shaft complex effect, therefore and the difficult fit clearance that appears between the steering input shaft. The seal cover mainly plays with top automobile body sealing effect, sealed the junction of mainly sealing up at the shaft shoulder and the body hypomere of steering input shaft, including the utility model discloses when installing on the universal joint and using, whole can be followed the axis direction compression, inhale on the discoid seal cover can adsorb the automobile body panel beating in the top this moment, sealed the pad can be compressed tightly between input shaft shoulder and body hypomere. Therefore, gaps are not easy to appear at the sealing fit part of the universal joint dust cover and the vehicle body and the fit part of the input shaft shoulder and the shaft shoulder in the vehicle body. So the utility model has the advantages of long service life, good sealing and waterproof performance, excellent sound insulation and dustproof performance.

The utility model discloses well seal cover and sealed pad are by rubber vulcanization moulding, and the body is by plastics injection moulding, assembles the three and forms the utility model discloses an universal joint dust cover has the advantage that quality, cost are controlled easily.

The utility model discloses well sealed direct mount that fills up is at the body middle part, the sealed condition of pad of neglected loading can not appear during the installation.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a universal joint dust cover according to the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1 at another angle;

fig. 4 is a top view of the gasket of fig. 1.

Detailed Description

The utility model discloses an embodiment of universal joint dust cover:

the utility model discloses a concrete structure of universal joint dust cover is as shown in fig. 1 to fig. 4, including seal cover 1, body 2 and sealed pad 3, wherein seal cover 1 and sealed pad 3 are vulcanized the shaping by rubber materials, and body 2 is by plastics injection moulding, and seal cover 1 installs the lower extreme at body 2, and sealed pad 3 installs the middle part at body 2.

The body 2 comprises an upper section and a lower section, and the inner diameter of the lower section is larger than the outer diameter of the upper section. The upper end of the upper section is provided with an upper connecting lug 21, and the upper connecting lug 21 is of an annular structure. Wherein the lower terminal surface of going up engaging lug 21 is the plane, has boss 22 on the up end, and the outer terminal surface of boss 22 is the conical surface that the diameter is big end down so that sealing sleeve 1 suit, and the middle part processing of boss 22 has annular 23, and annular 23 can increase the frictional force between sealing sleeve 1 and the body 2, makes sealing sleeve 1 be connected inseparabler with body 2, is difficult for the pine to take off. The middle part of the sealing sleeve 1 is of a hollow drum-shaped structure, the upper end of the sealing sleeve extends to the periphery to form an annular matching sheet 11, the central part of the annular matching sheet 11 gradually sinks downwards to enable the inner wall surface of the sealing sleeve to be a curved surface, and the whole sealing sleeve 1 is in a sucker shape. The utility model discloses a universal joint dust cover installs the back that targets in place, and seal cover 1 is in compression state, and the automobile body panel beating can be hugged closely to seal cover 1's up end this moment, and the area of contact between ring-shaped cooperation piece 11 can increase seal cover 1 and the automobile body panel beating for the adsorption affinity between seal cover 1 and the automobile body panel beating is bigger, makes the utility model discloses a universal joint dust cover is difficult to throw off with the automobile body panel beating.

The sealing gasket 3 is arranged at the upper end of the lower section and is used for realizing sealing fit with the lower end face of the upper section. The sealing gasket 3 is a sheet with a hole in the middle, two buckling lugs 31 are arranged on the outer peripheral surface of the sealing gasket, the shapes of the two buckling lugs 31 are asymmetric, and one extending edge of one buckling lug 31 extends outwards for a long distance to form a detection end 32 for detecting whether the sealing gasket 3 is reversely arranged. The peripheral surface of the body 2 is provided with a through groove to form two buckling positions 24, the two buckling positions 24 are spaced by 180 degrees in order to adapt to the shape of the sealing gasket 3, the size of the buckling lug 31 is larger than the outer diameter of the body 2, therefore, the buckling lug 31 can extend out of the buckling positions 24, and the sealing gasket 3 is arranged in the middle of the body 2 through the buckling lug 31. After the sealing gasket 3 and the body 2 are assembled, firstly, the sealing gasket can be prevented from being neglected to be installed when the universal joint dust cover is installed, and secondly, the body 2 can be prevented from rotating relative to the sealing gasket 3. Semicircular protrusions 33 are formed on both the upper and lower surfaces of the gasket 3. Install the universal joint dust cover on the input shaft after, thereby sealed 3 can be compressed by the lower terminal surface of the shaft shoulder of input shaft and upper segment and make semi-circular arch 33 play sealed effect, compare in directly processing into the plane with the upper and lower terminal surface of sealed 3, semi-circular arch 33 changes in the deformation to play better sealed effect.

The outer peripheral surface of the body 2 is further provided with reinforcing ribs 25 distributed at intervals along the circumferential direction, and the reinforcing ribs 25 can increase the strength of the body 2 on the one hand and can be matched with other parts on the vehicle body to prevent the universal joint dust cover from rotating on the other hand.

In other embodiments, the protrusion may also be arc-shaped, square-shaped, or other shapes; the middle part of the boss 22 can be provided with no ring groove 23; the upper end surface of the upper connecting lug 21 can also be processed into a plane; the reinforcing ribs 25 on the outer peripheral surface of the body can also be omitted; the detection end 32 can also be omitted, and two buckling lugs can be made into a symmetrical form, but in this case, whether the sealing gasket is reversely mounted cannot be detected through a photoelectric switch during assembly; three or more buckling lugs 31 can be arranged, and only the arrangement number of the buckling positions 24 needs to be adjusted adaptively.

Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims (9)

1. A universal joint dust cover which characterized in that: the automobile sealing device comprises a sealing sleeve, a body and a sealing gasket, wherein the hardness of the body is greater than that of the sealing sleeve and the sealing gasket, the sealing sleeve is fixed at the upper end of the body, the body comprises an upper section and a lower section, the inner diameter of the lower section is greater than the outer diameter of the upper section, the sealing gasket is arranged at an inner shaft shoulder formed at the joint of the upper section and the lower section, and the upper end of the sealing sleeve is in a sucker shape and is connected with an automobile body metal plate above in a sealing mode.

2. A boot for a universal joint according to claim 1, wherein: the body includes the upper engaging lug of upper end, seal cover interference connection is in the upper end of body, and the up end of upper engaging lug is equipped with the boss, and the outer terminal surface of boss is the conical surface that the diameter is big end down.

3. A boot for a universal joint according to claim 2, wherein: and a downward sunken ring groove is processed in the middle of the boss.

4. A boot for a universal joint according to claim 2, wherein: the middle part of the sealing sleeve is of a hollow drum-shaped structure, the upper end of the sealing sleeve extends to the periphery to form an annular matching sheet, and the central part of the annular matching sheet is gradually sunken downwards to enable the inner wall surface of the annular matching sheet to be a curved surface.

5. A boot for a gimbal according to claim 1, wherein: the side wall of the lower section of the body is provided with a through groove to form a buckling position, the peripheral surface of the sealing gasket is provided with a buckling lug matched with the buckling position, and the buckling lug of the sealing gasket is fixedly arranged in the buckling position.

6. A boot for a universal joint according to claim 5, wherein: the outer peripheral surface of the sealing sleeve is provided with two buckling lugs, the two buckling lugs are arranged at an interval of 180 degrees, and the end part of one buckling lug extends outwards to form a detection end.

7. A boot for a universal joint according to claim 5, wherein: the upper end face and the lower end face of the sealing gasket are both provided with protrusions.

8. A boot for a universal joint according to claim 7, wherein: the shape of the bulge is semicircular.

9. A boot for a universal joint according to any one of claims 1 to 8, wherein: and reinforcing ribs are distributed on the peripheral surface of the body at intervals along the circumferential direction of the body.

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