CN217873745U

CN217873745U - Automobile transmission shaft assembly with anti-falling function

Info

Publication number: CN217873745U
Application number: CN202222032572.0U
Authority: CN
Inventors: 苏静; 杜轩; 杨龙; 袁豆
Original assignee: Wuhan Jielong Electric Power Steering Co Ltd
Current assignee: Wuhan Jielong Electric Power Steering Co Ltd
Priority date: 2022-08-03
Filing date: 2022-08-03
Publication date: 2022-11-22
Anticipated expiration: 2032-08-03

Abstract

The utility model relates to an automobile transmission shaft assembly with anticreep function belongs to automobile parts equipment technical field. The automobile transmission shaft assembly with the anti-falling function comprises a joint fork, a spline shaft, a spline sleeve, a limiting gasket and a dust-proof sleeve; one end of the spline housing is provided with a yoke; the other end of the spline housing is provided with a dustproof sleeve; a spline shaft is arranged in the spline housing in a sliding manner; the spline shaft is provided with a joint fork after penetrating through the dustproof sleeve. This car transmission shaft assembly with anticreep function compact structure, design benefit have adopted the mode that is provided with the exhaust hole at the middle part of integral key shaft and sets up the anticreep piece on the dirt proof boot, have solved the problem that the action that current car transmission shaft assembly exists is not smooth and easy, the dirt proof boot easily slips and the unable transmission moment of torsion that the joint fork welding harmfully leads to, are particularly suitable for the needs that car a steering system used.

Description

Automobile transmission shaft assembly with anti-falling function

Technical Field

The utility model relates to an automobile transmission shaft assembly with anticreep function belongs to automobile parts equipment technical field.

Background

The automobile transmission shaft assembly is one of main moving parts in an automobile steering system and has the function of transmitting torque. The automobile transmission shaft assembly generally comprises a spline shaft, a spline sleeve, a joint fork and a dustproof sleeve; the existing automobile transmission shaft assembly, such as the integrated yoke intermediate shaft disclosed in the utility model with the publication number of CN 207916950U, can meet the needs of the vehicle in a certain extent, but has the following problems.

1. A spline shaft (female shaft) in the existing automobile transmission shaft assembly is kept connected with a spline sleeve (male shaft) in a sliding insertion mode; one end of the spline housing is provided with a dustproof sleeve which keeps sliding connection with the spline shaft; therefore, when the spline shaft works relative to the spline housing, the inside of the spline housing is easily subjected to air pressure building, so that the problem that the action of the spline shaft is not smooth is solved.

2. The dust-proof sleeve in the existing transmission shaft assembly is arranged at one end of the spline sleeve in a riveting mode, and the problem that the dust-proof sleeve is small in riveting force and easy to slip exists.

3. In the utility model patent of grant publication No. CN 207916950U, what integral type structure was adopted to integral type structure with the festival fork to the integral type spline shaft, it has intensity big and the high advantage of precision, nevertheless receives processing technology and manufacturing cost's consideration, all adopts split type structure between most spline shafts and the festival fork at present, then uses the welded mode to assemble. However, when the spline shaft and the joint yoke are welded, the problem that torque cannot be transmitted due to poor welding of a welding seam is easily caused.

Therefore, there is a need to develop a new automobile transmission shaft assembly to solve the above problems of the existing automobile transmission shaft assembly.

Disclosure of Invention

The utility model aims to provide a: the utility model provides a compact structure, design benefit to solve the unable transmission moment of torsion problem that has the action of current car transmission shaft assembly unsmooth, the easy slippage of dirt proof boot and the section fork easily takes place to weld the harmfully and leads to.

[i] The technical scheme of the utility model is that:

an automobile transmission shaft assembly with an anti-drop function comprises a joint yoke, a spline shaft, a spline sleeve, a limiting gasket and a dustproof sleeve; one end of the spline housing is provided with a yoke; the other end of the spline housing is provided with a dustproof sleeve; a spline shaft is arranged in the spline housing in a sliding manner; the spline shaft is provided with a joint fork after penetrating through the dustproof sleeve; the method is characterized in that: one end of the dustproof sleeve is provided with a limiting bead which is bent inwards; a limiting gasket is arranged inside the limiting bead; the circumferential surface of the dustproof sleeve is provided with a plurality of anti-falling holes; the interior of the anti-falling hole is provided with an anti-falling sheet which inclines downwards; one end of the anti-drop sheet is connected with the anti-drop hole; one end of the spline housing is sleeved with a dustproof sleeve; the anti-falling sheet on the dustproof sleeve is connected with the spline sleeve in a clamping manner; the limiting gasket of the dustproof sleeve and the end surface of the spline sleeve are arranged oppositely; the limiting gasket is in sliding connection with the spline shaft.

The middle part of one end of the yoke is provided with a spline hole.

A big spline groove is formed in the spline housing; a limiting ring groove is arranged on the circumferential surface of one end of the spline sleeve; the anti-falling piece is connected with the limiting ring groove in a clamping manner; a limiting step surface is arranged on the circumferential surface of the other end of the spline sleeve; a plurality of small spline teeth are arranged on the circumferential surface of the spline sleeve on one side of the limiting stepped surface; the spline housing is connected with the spline hole of the corresponding yoke in a clamping way through the small spline teeth; one end of the joint fork is welded with the limiting stepped surface; one end of the spline housing penetrates through the spline hole of the joint yoke and then turns outwards to form a riveting flanging A; the riveting flanging A is connected with the joint fork in a clamping manner.

The middle part of the spline shaft is provided with an exhaust hole; a plurality of large spline teeth are uniformly arranged on the circumferential surface of one end of the spline shaft; the circumferential surface of the other end of the spline shaft is provided with a limiting flange; a plurality of small spline teeth are arranged on the circumferential surface of the spline shaft on one side of the limiting flange; the spline shaft is connected with the spline hole of the corresponding yoke in a clamping way through small spline teeth; one end of the joint fork is welded and connected with the limiting flange; one end of the spline shaft penetrates through the spline hole of the joint yoke and then turns outwards to form a riveting flanging B; the riveting flanging B is connected with the joint fork in a clamping way

The utility model has the advantages of:

this automobile transmission shaft assembly with anticreep function compact structure, design benefit have adopted the mode that is provided with the exhaust hole at the middle part of integral key shaft and sets up the anticreep piece on the dirt proof boot, have solved the problem of unable transmission moment of torsion that the action that current automobile transmission shaft assembly exists is not smooth and easy, the easy slippage of dirt proof boot and the bad welding of section fork lead to, are particularly suitable for the needs that automobile steering system used.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic sectional structure of the present invention;

FIG. 3 is a schematic view of the spline shaft and the yoke according to the present invention;

FIG. 4 is a schematic structural view of the spline shaft of the present invention;

FIG. 5 is a schematic view of the sectional structure of the spline shaft of the present invention;

FIG. 6 is a schematic structural view of the spline housing of the present invention;

FIG. 7 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 8 is an enlarged view of the structure at B in FIG. 2;

FIG. 9 is an enlarged view of the structure at C in FIG. 3;

FIG. 10 is a schematic cross-sectional view of the joint yoke according to the present invention;

fig. 11 is a schematic sectional view of the dust boot of the present invention.

In the figure: 1. a spline housing; 2. a yoke; 3. a dust-proof sleeve; 4. a spline shaft; 5. a limiting bead; 6. a limiting gasket; 7. anti-drop holes; 8. an anti-drop sheet; 9. a spline hole; 10. a large spline; 11. a limit ring groove; 12. a limiting step surface; 13. small spline teeth; 14. riveting and pressing the flanging A; 15. an exhaust hole; 16. large spline teeth; 17. limiting a flange; 18. and riveting and pressing the flanging B.

Detailed Description

The automobile transmission shaft assembly with the anti-drop function comprises a joint yoke 2, a spline shaft 4, a spline housing 1, a limiting gasket 6 and a dustproof housing 3 (see attached figures 1 and 2 in the specification).

A large spline groove 10 is arranged inside the spline housing 1 (see the attached figure 6 in the specification); a limiting ring groove 11 is arranged on the circumferential surface of one end of the spline housing 1; a limiting step surface 12 is arranged on the circumferential surface of the other end of the spline housing 1; the circumferential surface of the spline housing 1 on one side of the limiting stepped surface 12 is provided with a plurality of small spline teeth 13 (refer to the attached figure 6 in the specification).

One end of the spline housing 1 is provided with a yoke 2 (see the attached figure 1 of the specification). The middle part of one end of the yoke 2 is provided with a spline hole 9 (see the attached figure 10 in the specification).

The spline housing 1 is connected with the spline hole 9 of the corresponding yoke 2 in a clamping way through the small spline teeth 13; one end of the yoke 2 is welded with the limit step surface 12; one end of the spline housing 1 passes through the spline hole 9 of the yoke 2 and then turns outwards to form a riveting flanging A14 (see the attached figures 1 and 7 in the specification); the riveting flanging A14 is connected with the joint fork 2 in a clamping manner. Set up the aim at of festival fork 2 and spline housing 1 like this: so that during the during operation when appearing the bad problem of welding seam welding between section fork 2 and spline housing 1, spline housing 1 still can rely on little spline tooth 13 to give section fork 2 transmission moment of torsion, and riveting turn-ups A14 still can inject section fork 2 on spline housing 1, so can solve and only lean on the welding seam when being connected between spline housing 1 and section fork 2, when the bad problem of welding appears in the welding seam, can't transmit the problem of moment of torsion between spline housing 1 and section fork 2.

The other end of the spline housing 1 is provided with a dust cover 3 (see the attached figures 1 and 2 of the specification). A spline shaft 4 is arranged in the spline housing 1 in a sliding manner; the spline shaft 4 is provided with a pitch fork 2 after passing through the dustproof sleeve 3 (see the description attached with figures 1 and 2).

The circumferential surface of one end of the spline shaft 4 is provided with a limiting flange 17; the circumferential surface of the spline shaft 4 on the side of the limiting flange 17 is provided with a plurality of small spline teeth 13 (see the attached figure 4 in the specification).

The spline shaft 4 is connected with the spline hole 9 of the corresponding yoke 2 in a clamping way through the small spline teeth 13; one end of the yoke 2 is welded with the limiting flange 17; one end of the spline shaft 4 passes through the spline hole 9 of the yoke 2 and then turns outwards to form a riveting flanging B18; the riveting flanging B18 is connected with the joint fork 2 in a clamping way (see the attached figures 3 and 9 in the specification).

The purpose of thus arranging the yoke 2 and the spline shaft 4 is to: so that the during operation when appearing the welding seam between section fork 2 and the integral key shaft 4 and split, integral key shaft 4 still can rely on little spline tooth 13 to give section fork 2 transmission moment of torsion, and riveting turn-ups B18 still can inject section fork 2 on integral key shaft 4, so can solve between integral key shaft 4 and the section fork 2 only when leaning on the welding seam to be connected, when the welding seam appears welding failure problem, can pass through little spline tooth 13 transmission moment of torsion between integral key shaft 4 and the section fork 2, the problem of unable transmission moment of torsion that the welding failure that has had in the current transmission shaft assembly from this leads to has been avoided.

The middle part of the spline shaft 4 is provided with an exhaust hole 15; the circumferential surface of one end of the spline shaft 4 is uniformly provided with a plurality of large spline teeth 16 (refer to the attached figure 4 in the specification). After one end of the spline shaft 4 is inserted into the spline housing 1, the large spline teeth 16 are connected with the large spline groove 10 in the spline housing 1 in a sliding clamping manner. In this way the splined shaft 4 can slide relative to the spline housing 1 and they can mutually transmit torque to each other via the large spline teeth 16. The purpose of arranging the exhaust hole 15 in the middle of the spline shaft 4 is as follows: so that during operation, when integral key shaft 4 slides relative to spline housing 1, the inside accessible exhaust hole 15 of spline housing 1 keeps the intercommunication with the external world to avoided the inside of the relative spline housing work spline housing of integral key shaft current very easily to take place the problem that the action that "atmospheric pressure suppress and press" and lead to is not smooth and easy.

One end of the dustproof sleeve 3 is provided with a limiting bead 5 which is bent inwards; a limiting gasket 6 is arranged inside the limiting bead 5; a plurality of anti-falling holes 7 are formed in the circumferential surface of the dustproof sleeve 3; the anti-falling piece 8 which inclines downwards is arranged in the anti-falling hole 7; one end of the anti-dropping sheet 8 is connected with the anti-dropping hole 7 (refer to the attached figure 11 in the specification).

The anti-falling sheet 8 on the dustproof sleeve 3 is connected with the limiting ring groove 11 on the spline sleeve 1 in a clamping manner; the limiting gasket 6 of the dust cover 3 is opposite to the end surface of the spline housing 1 (see the attached figure 8 in the specification). The purpose of thus setting the dust-proof cover 3 is: so that the spline housing 1 can limit the spline shaft 4 in the spline housing 1 through the limiting gasket 6 of the dustproof sleeve 3, thereby avoiding the problem of slipping between the spline shaft 4 and the spline housing 1; dustproof sleeve 3 keeps the joint through spacing annular 11 on anti-disengaging piece 8 and the spline housing 1 to be connected, and when dustproof sleeve 3 formed the trend of relative outside removal with spline housing 1 under the pulling force effect of integral key shaft 4, spline housing 1 can inject dustproof sleeve 3 on spline housing 1 through spacing annular 11 and anti-disengaging piece 8, has avoided taking place the problem that takes off easily between dustproof sleeve 3 and the spline housing 1.

When the dustproof sleeve 3 adopts the mode that the anti-falling piece 8 is connected with the limiting ring groove 11 on the spline housing 1 in a clamping manner, the anti-falling piece 8 is stressed and deformed completely during working, and then the problem that the dustproof sleeve 3 is separated from the spline housing 1 can occur. But anticreep piece 8 is made it by metal material and has the characteristic that intensity is high, and its compressive strength will be greater than the riveting intensity when dust cover adopts riveted mode to connect among the current car transmission shaft assembly far away, has solved the problem that current dust cover easily takes place the slippage from this.

This automobile transmission shaft assembly with anticreep function compact structure, design benefit have adopted the mode that is provided with exhaust hole 15 and sets up anticreep piece 8 on dirt proof boot 3 at the middle part of integral key shaft 4, have solved the problem of unable transmission moment of torsion that current automobile transmission shaft assembly exists that the action is not smooth and easy, dirt proof boot 3 easily slips and the bad welding of section fork leads to, are particularly suitable for the needs that automobile steering system used.

Claims

1. An automobile transmission shaft assembly with an anti-drop function comprises a joint yoke (2), a spline shaft (4), a spline sleeve (1), a limiting gasket (6) and a dust cover (3); one end of the spline housing (1) is provided with a yoke (2); the other end of the spline housing (1) is provided with a dustproof sleeve (3); a spline shaft (4) is arranged in the spline housing (1) in a sliding manner; the spline shaft (4) is provided with a joint fork (2) after passing through the dustproof sleeve (3); the method is characterized in that: one end of the dustproof sleeve (3) is provided with a limiting bead (5) which is bent inwards; a limiting gasket (6) is arranged inside the limiting bead (5); a plurality of anti-falling holes (7) are formed in the circumferential surface of the dustproof sleeve (3); the interior of the anti-drop hole (7) is provided with an anti-drop sheet (8) which inclines downwards; one end of the anti-falling sheet (8) is connected with the anti-falling hole (7); one end of the spline housing (1) is sleeved with a dustproof sleeve (3); the anti-falling sheet (8) on the dustproof sleeve (3) is connected with the spline sleeve (1) in a clamping way; the limiting gasket (6) of the dustproof sleeve (3) and the end surface of the spline sleeve (1) are arranged oppositely; the limiting gasket (6) is in sliding connection with the spline shaft (4).

2. The automobile transmission shaft assembly with the anti-drop function according to claim 1, wherein: the middle part of one end of the yoke (2) is provided with a spline hole (9).

3. The automobile transmission shaft assembly with the anti-drop function according to claim 2, wherein: a large spline groove (10) is arranged inside the spline housing (1); a limiting ring groove (11) is arranged on the circumferential surface of one end of the spline housing (1); the anti-falling piece (8) is connected with the limiting ring groove (11) in a clamping manner; a limiting step surface (12) is arranged on the circumferential surface of the other end of the spline housing (1); a plurality of small spline teeth (13) are arranged on the circumferential surface of the spline housing (1) at one side of the limiting stepped surface (12); the spline sleeve (1) is connected with the spline hole (9) of the corresponding yoke (2) in a clamping way through the small spline teeth (13); one end of the joint fork (2) is welded with the limiting stepped surface (12); one end of the spline housing (1) passes through the spline hole (9) of the yoke (2) and then turns outwards to form a riveting flanging A (14); the riveting flanging A (14) is connected with the joint fork (2) in a clamping way.

4. The automobile transmission shaft assembly with the anti-drop function according to claim 3, wherein: the middle part of the spline shaft (4) is provided with an exhaust hole (15); a plurality of large spline teeth (16) are uniformly arranged on the circumferential surface of one end of the spline shaft (4); the circumferential surface of the other end of the spline shaft (4) is provided with a limiting flange (17); a plurality of small spline teeth (13) are arranged on the circumferential surface of the spline shaft (4) at one side of the limiting flange (17); the spline shaft (4) is connected with the spline hole (9) of the corresponding yoke (2) in a clamping way through a small spline tooth (13); one end of the yoke (2) is welded with the limiting flange (17); one end of the spline shaft (4) penetrates through the spline hole (9) of the yoke (2) and then turns outwards to form a riveting flanging B (18); the riveting flanging B (18) is connected with the joint fork (2) in a clamping way.