CN218844906U - An automobile drive shaft assembly structure - Google Patents

Abstract

The utility model discloses an automobile drive shaft assembly structure, which comprises a shaft rod, a steering knuckle shell and a dust cover. surface, the first welding surface and the second welding surface are connected by friction welding, the dustproof cover is integrally formed, and is provided with a first opening and a second opening, and the first opening of the dustproof cover is sleeved on the An anti-dropping structure is provided on the steering knuckle housing and between the inner side of the first opening and the surface of the steering knuckle housing, and the second opening of the dust cover is sleeved on the shaft. The drive shaft assembly structure of the utility model does not affect the development cycle of new models, reduces production costs, and at the same time solves the quality risk of oil leakage of the drive shaft due to poor riveting when the existing dust cover structure is riveted, and improves material utilization. High efficiency, simplified assembly process, and improved durability and reliability.

Description

An automobile drive shaft assembly structure

technical field

The utility model relates to an automobile drive shaft, in particular to an assembly structure of an automobile drive shaft.

Background technique

The steering knuckle shaft of the automobile drive shaft (including the steering knuckle housing and the drive shaft) is integrally forged from CF35-Q forging material. After forging, it is heat treated and machined and then assembled into a finished drive shaft assembly. The shaft joint is generally a standard selection part. If the shell and the shaft are integrally forged, for different models, new parts need to be re-forged, which cannot be platformized, which affects the development cycle of new models and increases production costs. And the existing drive shaft dust cover structure is composed of two sub-parts, the connecting sleeve and the dust cover at the moving end of the drive shaft, and the riveting process of the steering knuckle shell at the moving end of the drive shaft is used to prevent the dust cover from being pulled out and falling off. design structure. The above structure design of the dust cover needs to fix the two sub-parts together by riveting, the material utilization rate is low, the process is trivial, and there are quality risks of oil leakage and damage to the dust cover due to poor riveting during riveting.

Utility model content

The utility model provides an automobile drive shaft assembly structure, which does not affect the development cycle of new models, reduces production costs, and at the same time solves the quality risk of oil leakage of the drive shaft due to poor riveting when the existing dust cover structure is riveted. The material utilization rate is improved, the assembly process is simplified, and the durability and reliability are improved.

The technical scheme of the utility model is as follows:

An automobile drive shaft assembly structure, comprising a shaft, a steering knuckle housing and a dust cover, one end of the shaft is provided with a first welding surface, one end of the steering knuckle housing is provided with a second welding surface, the The first welding surface and the second welding surface are connected by friction welding, so that the shaft rod and the steering knuckle housing are fixedly connected, the dust cover is integrally formed, and a first opening and a second opening are provided. The first opening of the dust cover is sleeved on the steering knuckle housing, and an anti-falling structure is provided between the inner side of the first opening and the surface of the steering knuckle housing, and the second opening of the dust cover The opening is sleeved on the shaft.

The utility model first forges the steering knuckle shell, and then machine-adds shafts of different lengths, and then according to different vehicle types, the shafts of different lengths and the steering knuckle shell can be connected by friction welding of two welding surfaces. The one-piece forging and re-welding method can greatly shorten the development cycle of new models. It does not need to newly develop a steering knuckle shell mold with shafts. It only needs to machine and add shafts of different lengths for friction welding. It is easy to realize the platform for vehicle development. It can reduce the production cost; at the same time, the utility model has a built-in anti-falling structure at the joint of the dust cover and the steering knuckle shell, which can prevent the dust cover from being pulled and falling off after the torque decays, effectively avoiding the riveting of the prior art. In case of oil leakage due to improper clamping, the dust cover is integrally formed, which reduces assembly man-hours, improves material utilization, omits the assembly process of the connecting sleeve and the dust cover, and improves the quality of the dust cover.

In a more preferred embodiment, both the first welding surface and the second welding surface are concavely formed with a conical cavity, and the two conical cavities correspond to each other during welding, so that the first welding surface and the second welding surface The welding section between the second welding surfaces is hollow.

The conical cavity formed at the two welding surfaces makes the welding section hollow, so that the connection through the friction welding process is more stable, because the solid may cause the friction welding to be weak, and it is easy to cause insufficient connection strength at the welding point and cause fracture.

In a more preferred embodiment, the end of the shaft away from the first welding surface forms a spline for connecting with the hub end.

In a more preferred embodiment, the steering knuckle housing is a universal joint housing, and one end away from the second welding surface is open for installing a universal joint, and the universal joint is connected to the differential through a pivot pin .

In a more preferred embodiment, the dust cover is a trumpet-shaped corrugated telescopic sleeve integrally formed of plastic. The whole dust cover can be set on the joint between the shaft rod and the steering knuckle housing, and the corrugated structure can facilitate the expansion and contraction of the cover body to a certain length and enhance the flexibility. Similarly, the dust cover can be arranged on the fixed joint shell between the shaft rod and the hub end.

In a more preferred embodiment, the anti-falling structure includes a block and a slot matching with the block, and a plurality of blocks are circumferentially distributed on the inner wall of the first opening of the dust cover Above, the locking groove is an annular groove provided on the surface of the steering knuckle housing, and the first opening is engaged in the annular groove on the surface of the steering knuckle housing through a plurality of clamping blocks, so as to The dust cover is prevented from coming off from the surface of the knuckle housing.

In a more preferred embodiment, a first annular installation groove is formed on the surface of the first opening, the first opening is sleeved behind the surface of the steering knuckle housing, Fasten at the mounting slot.

In a more preferred embodiment, a second annular installation groove is formed on the surface of the second opening. fasten.

The two installation slots facilitate the quick positioning of the clips, so that the openings at both ends of the dust cover can be clamped and fixed on the shaft rod and the steering knuckle housing, which can improve the stability and convenience of installation.

When installing the dust cover, first string the entire dust cover into the sleeve from the splined end of the shaft and move it to the connection between the shaft and the steering knuckle housing, and then make the first opening of the dust cover open first It is socketed on the surface of the steering knuckle shell, and at the same time, a plurality of clamping blocks are snapped into the annular groove to prevent it from coming out, and then the dust cover and the steering knuckle are connected in the first annular installation groove on the surface of the dust cover by using a clamp. The casing is clamped and fixed, and finally at the second opening, the dust cover and the shaft are also clamped and fixed by clamps in the second annular installation groove on the surface of the dust cover to complete the installation of the entire dust cover. Socket fixed installation.

In a more preferred embodiment, the shaft includes a shaft body and connecting ends placed at both ends of the shaft body, and the shaft body is hollow or solid.

For models with a large load, a solid shaft body can be used, and for some models with a relatively small load, while ensuring that the quality inspection requirements are met, a hollow shaft can be used to reduce the weight of the part and further reduce the production cost.

In a more preferred embodiment, both the shaft rod and the steering knuckle housing are made of CF35-Q forging material.

The beneficial effects of the utility model are as follows:

In the utility model, the shaft joint and the shaft rod which were originally integrally forged are forged separately, and the steering knuckle shell (which can be platformized) is first forged, and then the shaft rods of different lengths are machined out, and the shaft rods of different lengths are made according to different models. and the steering knuckle shell into an assembly through friction welding, which can shorten the development cycle of new models and reduce production costs; at the same time, the utility model changes the dust cover into an integrated type, and the socket of the dust cover and the steering knuckle shell The anti-falling structure is built in, and the anti-falling structure prevents the dust cover from being pulled and falling off after the torque is attenuated, which can effectively prevent the oil leakage caused by the incomplete clamping of the existing technology during riveting. At the same time, the integration reduces the assembly man-hours and can The assembly process of the connecting sleeve and the dustproof jacket is omitted, and customer complaints and complaints caused by oil leakage of the drive shaft, abnormal noise of the bearing and premature failure of the after-sales are avoided.

Description of drawings

Fig. 1 is the structural representation of the utility model automobile drive shaft assembly;

Fig. 2 is a schematic diagram of the connection between the shaft rod and the steering knuckle housing;

Fig. 3 is a schematic diagram of the first welding surface of the shaft;

Fig. 4 is a schematic diagram of the second welding surface of the steering knuckle housing;

Fig. 5 is a structural schematic diagram of the dust cover.

In the figure: shaft 1, first welding surface 101, spline 102, steering knuckle housing 2, second welding surface 201, dust cover 3, first opening 301, second opening 302, first annular mounting groove 303 , the second annular mounting groove 304 , the clamping block 4 , and the clamping groove 5 .

Detailed ways

The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, certain components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable that some well-known structures and descriptions thereof may be omitted in the drawings. The positional relationship described in the drawings is for illustrative purposes only, and should not be construed as a limitation on this patent.

Example 1:

As shown in Figures 1 to 5, this embodiment provides an automobile drive shaft assembly structure, including a shaft 1, a steering knuckle housing 2 and a dust cover 3, and one end of the shaft 1 is provided with a first welding surface 101, one end of the steering knuckle housing 2 is provided with a second welding surface 201, and the first welding surface 101 and the second welding surface 201 are connected by friction welding so that the shaft 1 and the steering knuckle The housing 2 is fixedly connected, the dust cover 3 is integrally formed, and is provided with a first opening 301 and a second opening 302, the first opening 301 of the dust cover 3 is sleeved on the knuckle housing 2, Moreover, an anti-falling structure is provided between the inner side of the first opening 301 and the surface of the steering knuckle housing 2 , and the second opening 302 of the dust cover 3 is sleeved on the shaft 1 .

The utility model first forges the steering knuckle housing 2, and then machine-adds shaft rods 1 of different lengths, and then can connect the shaft rods 1 of different lengths and the steering knuckle housing 2 through friction welding of two welding surfaces according to different vehicle models. , such a method of split forging and re-welding can greatly shorten the development cycle of new models. It does not need to newly develop a steering knuckle shell mold with a shaft. It only needs to machine the shaft 1 of different lengths for friction welding, which is easy to implement. The platformization of vehicle development can reduce production costs; at the same time, the utility model has a built-in anti-falling structure at the joint between the dust cover 3 and the steering knuckle housing 2, which can prevent the dust cover 3 from being pulled and falling off after the torque decays , to effectively prevent the oil leakage caused by the incomplete clamping during riveting. The dust cover 3 is integrally formed, which reduces the assembly man-hour and improves the utilization rate of materials. The assembly process of the connecting sleeve and the dust cover can be omitted, and the dust cover 3 quality.

Referring to Fig. 3 and Fig. 4, in a more preferred embodiment, the first welding surface 101 and the second welding surface 201 are concavely formed with a conical cavity, and the two conical cavities correspond to each other during welding. The welding section between the first welding surface 101 and the second welding surface 201 is hollow. The conical cavity formed at the two welding surfaces makes the welding section hollow, so that the connection through the friction welding process is more stable, because the solid may cause the friction welding to be weak, and it is easy to cause insufficient connection strength at the welding point and cause fracture.

In a preferred embodiment, the end of the shaft 1 away from the first welding surface 101 forms a spline 102 for connecting with the hub end. Generally, a fixed joint shell (not shown in the figure) is socketed at this place, and the spline 102 is placed in the fixed joint shell to connect with the bearing at the hub end, and at the same time, it can also be socketed between the fixed joint shell and the shaft rod 1 dust cover3.

In a more preferred embodiment, the steering knuckle housing 2 is a universal joint housing, and one end away from the second welding surface 201 is open for installing a universal joint (not shown in the figure). The joint is connected to the differential through a shaft pin.

In a more preferred embodiment, the dust cover 3 is a trumpet-shaped corrugated telescopic sleeve formed integrally with plastic. The whole dust cover 3 can be set on the joint between the shaft rod 1 and the steering knuckle housing 2, and the corrugated structure can facilitate the expansion and contraction of the cover body to a certain length and enhance the flexibility. Similarly, the dust cover 3 can be covered on the fixed joint shell between the shaft rod 1 and the hub end.

Referring to Fig. 4 and Fig. 5, in a more preferred embodiment, the anti-falling structure includes a block 4 and a slot 5 cooperating with the block 4, and a plurality of blocks 4 are distributed in the circumferential direction. On the inner side wall of the first opening 301 of the dust cover 3, the locking groove 5 is an annular groove provided on the surface of the steering knuckle housing 2, and the first opening 301 passes through a plurality of the locking blocks 4 snapped into the annular groove on the surface of the steering knuckle housing 2 to prevent the dust cover 3 from falling off from the surface of the steering knuckle housing 2 .

In a more preferred embodiment, the surface of the first opening 301 is formed with a first annular installation groove 303, the first opening 301 is sleeved on the surface of the steering knuckle housing 2, and passes through the clamp (Fig. not shown in ) fastened at the first annular installation groove 303; the surface of the second opening 302 is formed with a second annular installation groove 304, and the second opening 302 is sleeved on the shaft 1 Afterwards, it is fastened at the second annular installation groove 304 by a clamp.

The two installation grooves facilitate the fast positioning of the clamp, so that the openings at both ends of the dust cover 3 are sleeved and fixed on the shaft rod 1 and the steering knuckle housing 2, which can improve the stability and convenience of installation.

When installing the dust cover 3, first put the entire dust cover 3 into the socket from the spline 102 end of the shaft 1 and move to the joint between the shaft 1 and the steering knuckle housing 2, and then make the dust cover 3 The first opening 301 of the first opening 301 is first opened and socketed on the surface of the steering knuckle housing 2, and at the same time, a plurality of clamping blocks 4 are snapped into the annular groove to prevent it from coming out, and then the first opening on the surface of the dust cover 3 is used The dust cover 3 and the steering knuckle housing 2 are clamped and fixed in the annular installation groove 303, and finally at the second opening 302, the dustproof cover 3 is also fixed in the second annular installation groove 304 on the surface of the dust cover 3 by using a clamp. The cover 3 and the shaft rod 1 are clamped and fixed, and the socket-fitting installation of the entire dust cover 3 can be completed.

In a more preferred embodiment, the shaft rod 1 and the steering knuckle housing 2 are both made of CF35-Q forging material.

The concrete formation process of the automobile drive shaft assembly structure of the present utility model is as follows:

First use CF35-Q forging material to forge steering knuckle housing 2, then use CF35-Q forging material machine to add shaft rod 1 of different lengths, and then use corresponding length shaft rod 1 and steering knuckle housing according to the corresponding model 2. Conduct friction welding connection through the two welding surfaces, as shown in Figure 2; after that, the dust cover 3 is integrally processed, and then the entire dust cover 3 is threaded into the sleeve from the right to the left from the end of the spline 102 of the shaft 1 Connect, and move to the connection between the shaft 1 and the steering knuckle housing 2, and then fit the first opening 301 of the dust cover 3 on the surface of the steering knuckle housing 2, at this time, a plurality of clamping blocks 4 are inserted into In the annular groove, use a large clamp to fasten and fix the first opening 301 and the steering knuckle housing 2 in the first annular installation groove 303 on the surface of the dust cover 3. Similarly, the dust cover 3 At the second opening 302, a small hoop is also used to fasten and fix the second opening 302 and the shaft 1 in the second annular mounting groove 304 on the surface of the dust cover 3, as shown in FIG. The socket of dust cover 3 is fixedly installed.

In the utility model, the shaft joint and the shaft rod which were originally integrally forged are forged separately, and the steering knuckle shell 2 (which can be platformized) is first forged, and then the shaft rod 1 of different lengths is machined out, and different lengths of shaft rods are added according to different models. The shaft rod 1 and the steering knuckle housing 2 are assembled by friction welding, which can shorten the development cycle of new models and reduce production costs; at the same time, the utility model changes the dust cover 3 into an integrated one, and the dust cover 3 and steering There is a built-in anti-falling structure at the socket of the joint housing 2, which prevents the dust cover 3 from being pulled and falling off after the torque attenuates, which can effectively prevent oil leakage caused by improper clamping during riveting, and at the same time reduce Assembling man-hours are reduced, the assembly process of the connecting sleeve and the dustproof jacket can be omitted, and customer complaints and complaints caused by oil leakage of the drive shaft, abnormal noise of the bearing and premature failure of the after-sales customer can be avoided.

Example 2:

This embodiment is similar to Embodiment 1, except that in this embodiment, the shaft 1 includes a shaft body and connecting ends placed at both ends of the shaft body, and the shaft body is hollow or solid.

For models with a large load, a solid shaft body can be used, and for some models with a relatively small load, while ensuring that the quality inspection requirements are met, a hollow shaft can be used to reduce the weight of the part and further reduce the production cost.

Example 3:

This embodiment is similar to Embodiment 1, the difference is that in this embodiment, an annular protruding ring (not shown in the figure) can be set on the inner wall of the first opening 301 of the dust cover 3 instead of a plurality of Protrusion 4, the convex ring is adapted to the annular groove on the surface of the steering knuckle housing 2, and can quickly fit the convex ring and the annular groove when installing the dust cover 3, so as to prevent the dust cover from 3 fall off.

At the same time, the position of the protruding ring is corresponding to the first annular mounting groove 303 on the surface of the dust cover 3. After clamping, when clamped in the first annular mounting groove 303, the clamp can further strengthen the support of the protruding ring. The compression, so that it can be more tightly engaged with the annular groove to prevent falling off, and enhance the effect of preventing falling off.

Apparently, the above-mentioned embodiments of the utility model are only examples for clearly illustrating the utility model, rather than limiting the implementation of the utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (9)

1. The utility model provides an automobile driving shaft assembly structure, its characterized in that includes axostylus axostyle (1), knuckle casing (2) and dust cover (3), the one end of axostylus axostyle (1) is equipped with first welded surface (101), one end second welded surface (201) of knuckle casing (2), first welded surface (101) with second welded surface (201) carry out friction weld and connect, dust cover (3) integrated into one piece, and be equipped with first opening (301) and second opening (302), first opening (301) of dust cover (3) cup joint on knuckle casing (2), just first opening (301) inboard with be equipped with anti-drop structure between the surface of knuckle casing (2), second opening (302) of dust cover (3) cup joint on axostylus axostyle (1).

2. The vehicle drive shaft assembly structure according to claim 1, wherein the first welding surface (101) and the second welding surface (201) are recessed to form a tapered cavity, and the tapered cavities correspond to each other when welding, so that a welding section between the first welding surface (101) and the second welding surface (201) is hollow.

3. A vehicle driveshaft assembly arrangement according to claim 1, characterised in that the end of the shaft (1) remote from the first weld face (101) is splined (102) for connection to a hub end.

4. The vehicle drive axle assembly structure according to claim 1, wherein the knuckle housing (2) is a universal joint housing, and an end of the universal joint housing remote from the second welding surface (201) is opened for mounting a universal joint, and the universal joint is connected to the differential through a shaft pin.

5. The vehicle drive axle assembly structure as recited in claim 1, wherein the dust cover (3) is a horn-shaped bellows made of plastic integrally formed.

6. The automobile drive shaft assembly structure according to claim 1, wherein the anti-falling structure comprises a clamping block (4) and a clamping groove (5) matched with the clamping block (4), the clamping blocks (4) are circumferentially distributed on an inner side wall of a first opening (301) of the dust cover (3), the clamping groove (5) is an annular groove formed in the surface of the knuckle housing (2), and the first opening (301) is clamped in the annular groove formed in the surface of the knuckle housing (2) through the clamping blocks (4).

7. The vehicle drive shaft assembly structure according to claim 1, wherein a surface of the first opening (301) is formed with a first annular mounting groove (303), and the first opening (301) is sleeved on a surface of the knuckle housing (2) and fastened at the first annular mounting groove (303) by a clamp.

8. The vehicle drive shaft assembly structure as recited in claim 1, wherein a second annular mounting groove (304) is formed on a surface of the second opening (302), and the second opening (302) is fastened at the second annular mounting groove (304) by a clamp after being sleeved on the shaft rod (1).

9. The vehicle drive shaft assembly structure according to claim 1, wherein the shaft rod (1) comprises a hollow shaft body or a solid shaft body and connecting ends disposed at two ends of the shaft body.

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