JP3055388U - Outer joint extraction tool for drive shafts for automobiles - Google Patents

Abstract

(57) [Problem] To provide an outer joint extraction tool which is attached to and detached from a drive shaft for driving a front wheel of an automobile, and quickly and safely extracts an outer joint incorporated in the drive shaft. SOLUTION: A shackle 1 formed in a U-shape and a contact guide 2 provided inside one side of upper and lower arms of the shackle.
A fixing bolt 3 provided on the facing arm of the guide by tapping, a support bolt 4 for supporting the groove of the upper and lower arms of the shackle, and a tapping on the side faces of the upper and lower arms of the shackle. Strut bolt 5 provided in the lateral direction
An automobile in which the contact guide is brought into contact with the drive shaft and fixed with a fixing bolt, and the support bolt is used to support the groove of the shackle, and the strut bolt is used to press the outer joint to project and pull out. For extracting outer joints of drive shafts for vehicles.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an extraction tool for attaching and detaching a drive shaft for driving a front wheel of an automobile, and for quickly and safely extracting an outer joint incorporated in the drive shaft.

[0002]

[Prior art]

 An example of an outer joint incorporated in a drive shaft for driving a front wheel of an automobile is shown in FIG. 2, and a spline shaft portion (A1) machined into a drive shaft (A) is formed by an inner race of an outer joint (B). The spline bearing hole machined in (B1) is fitted so that it can slide in the axial direction, and the snap ring (C) fitted in the groove machined at the tip of the spline shaft part prevents it from coming off. It has a structure.

In addition, a universal joint is formed by inserting a steel ball (B2) into a groove provided on the circumference of the outer periphery of the inner race and the outer joint body and interposing a steel ball (B2) therebetween. It is filled with grease and is equipped with a rubber boot (D) to prevent the entry of water droplets, dust, sand, etc. from the outside, and protects the joints. When the rubber boots are broken and water drops, dust, sand, etc. enter the joint fitting section and generate abnormal noise, or when the rubber boots are torn and used for a long period of time, the joint section may come off during traveling or break. There is a risk that the vehicle may not be able to run.

[0004] Therefore, it is necessary to promptly replace and repair the torn rubber boot. In replacing and repairing the rubber boot, conventionally, after removing the drive shaft assembly from the vehicle body and removing the torn rubber boot, it is necessary to remove the torn rubber boot. A method of removing the outer joint from the drive shaft and replacing it with a new rubber boot by fixing it with force, etc. and hitting the inner race of the outer joint, or repairing the inner joint part without removing the outer joint It is a common practice to remove the rubber boots one by one and insert a new comb boot from the inner joint part, or to attach and fix the edge of the separated rubber boot with adhesive or the like, and replace and repair it.

[0005] Further, in a jig for extracting a joint of an automobile drive shaft disclosed in Japanese Utility Model Application Laid-Open No. 59-62977, a sliding hammer is slid along the drive shaft and an outer joint or the like is formed by impacting a guide sleeve. A removal jig has been proposed that allows the universal joint to be removed from the drive shaft.

[0006]

[Problems to be solved by the invention]

 However, the removal of the outer joint in the above-mentioned conventional method has a problem that it is difficult to easily pull out the outer joint or the inner race of the outer joint merely by hitting or giving an impact. The snap ring may be easily broken or broken if it is pulled out or subjected to a shock, or if the drive shaft is installed in the body of the car, the joint may move and be pulled out when hit or impacted. Is extremely difficult.

In addition, the parts of the inner joint part are sequentially removed, a new rubber boot is sequentially removed from the inner joint part, and a new rubber boot is inserted from the inner joint part, or an edge of the separated rubber boot is bonded. The replacement method can be performed without removing the outer joint.However, it takes time and effort to remove the parts of the inner joint, and in the case of separated rubber boots, There are drawbacks such as peeling off and leakage of the filled grease.

[0008]

[Means for Solving the Problems]

 The present invention has been made to solve the above-mentioned problem, and it is possible to replace a rubber boot attached to an outer joint of a drive shaft for driving a front wheel of an automobile without removing a drive shaft assembly from an automobile body. An object of the present invention is to provide a tool for extracting an outer joint of a drive shaft for an automobile, which can quickly and safely extract an outer joint of the shaft. The solution is as follows. That is,

(1) A shackle formed in a U-shape, a contact guide provided on one inner side of the upper and lower arms of the shackle, and a fixing bolt provided on the facing arm of the guide by tapping. A support bolt for supporting the development part of the upper and lower arms of the shackle, and a strut bolt which is provided on the side surface of the upper and lower arms of the shackle by being threaded and fixed to the drive shaft for the automobile An outer joint of a drive shaft for an automobile, wherein the outer joint of the drive shaft is pulled out by pressing the outer joint of the drive shaft with the support bolt, and fixing the shackle with the support bolt. A removal tool, which is formed by pressing an outer joint with the above-mentioned strut bolt and strutting the joint. The outer ring of the snap ring for retaining is cut into the chamfer of the spline bearing hole of the outer joint inner race so that it can be removed with a small impact force. .

(2) A boss is provided at the groove of the upper and lower arms of the shackle formed in a U-shape, a through hole is made in one of the bosses, and the other side is made substantially concentric with the through hole. (1) The boss is provided with a screw hole, and is screwed into the screw hole through a support bolt having a turning head in the through hole to support a groove of the upper and lower arms of the shackle. An outer joint removing tool for an automobile drive shaft according to claim 1, wherein the fixing bolt of the outer joint removing tool is fixed to the drive shaft by tightening the fixing bolt with a support bolt so as not to open the groove of the shackle. In addition to firmly supporting the outer joint removing tool, the support bolt is removed so that the outer joint extracting tool can be attached to and detached from the drive shaft.

(3) A vehicle according to the above (1) or (2), wherein the shackle is provided with a plurality of projecting bolts which are threaded on side surfaces of the upper and lower arms opposite to each other, and are provided in a lateral direction. An outer joint removal tool for a drive shaft.A plurality of bolts on the side of the outer joint are pressed in a well-balanced manner with a bolt, and it is stretched to support the joint so that it does not move. It is designed to be evenly and hardly inserted into the chamfer of the spline bearing hole of the outer joint inner race.

(4) A nut with a flange is provided at the tip of the bolt, and a gap is provided between the screw hole of the nut with the flange and the tip of the bolt, and an elastic sleeve is provided in the gap. An outer joint removal tool for a drive shaft for an automobile according to any one of the above (1) to (3), wherein the tool is mounted with an interposition therebetween, wherein the tool pushes a tip end of a strut bolt. The pressing surface is made uniform so that the pressing surface does not touch the side surface of the outer joint without contact, so that the pressing surface can be extended.In addition, by tightening the extending bolt, the tip of the extending bolt is connected to the outer joint. It is designed so that it cannot be turned while pressed against the side surface.

[0013]

[Embodiment of the invention]

 DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings showing an embodiment. The present invention relates to a shackle 1 formed in a U-shape as shown in FIG. A guide 2, a fixing bolt 3 which is provided on the facing arm of the guide by tapping, a support bolt 4 for supporting a groove of the upper and lower arms of the shackle 1, and a side surface of the upper and lower arms of the shackle 1 And a holster 5 which is provided in the lateral direction by being tapped.

A shackle 1 is formed by bending a round bar (or a square bar) made of metal such as iron into a U-shape, and providing bosses 1a, 1a in a development part of an upper and lower arm, and is commercially available. You may use something. A through hole 1b is provided in one of the bosses 1a, 1a, and a screw hole 1c slightly smaller than the through hole is provided substantially concentrically with the through hole.

The contact guide 2 is formed by bending a metal plate such as iron into an arc shape in accordance with the outer diameter of a drive shaft A (FIG. 2) for driving a front wheel of an automobile. Is fixed by welding to one of the insides.

The fixing bolt 3 is provided with a screw hole in an arm facing the contact guide 2, and is screwed into the screw hole so as to stand. A drive is provided between the contact guide 2 and the tip of the fixing bolt 3. The shaft A (FIG. 2) is to be tightened so as to sandwich it.

The support bolt 4 supports a groove portion of the upper and lower arms of the shackle 1 and has a turning head, a hole 4a is provided in the turning head in a lateral direction, and a turning rod is passed through the hole. As shown in FIG. 3, the spring washer 7 and the spring washer 7 are inserted into through holes 1b provided in one boss 1a (upper boss in the drawing) of the groove of the upper and lower arms of the shackle 1, as shown in FIG. The support bolt 4 is passed through the flat washer 8, and the threaded end of the support bolt is screwed into the screw hole 1 c of the other boss 1 a (the lower boss in the drawing) to turn the support bolt 4. Turn to tighten so that the groove on the upper and lower arms of the shackle 1 can be firmly supported.

The strut bolt 5 is provided with a screw hole in the lateral direction on the side surface of the upper and lower arms of the shackle 1 opposite to each other, and is screwed into the screw hole to be provided in the lateral direction, so that the drive shaft A (FIG. 2) The front surface of the outer joint B (FIG. 2) is pressed so as to be stretched, and at least two opposing positions of the front surface of the outer joint B (FIG. 2) can be pressed and stretched. In such a way, it is also possible to press in a balanced manner so that the thrust can be applied, and increase the number of struts.

Further, a nut 6 with a flange having a wide pressing surface is mounted on the tip of the bolt 5 so that a stable pressing and tensioning can be performed. By providing a gap at the tip of the strut bolt 5 and attaching the gap with an elastic sleeve 9 such as vinyl or hard rubber as shown in FIG. Even if it is pressed against the front surface of the joint B (FIG. 2) without coming into contact with one side, the nut 6 with the flange is attached to the side of the outer joint B (FIG. 2) even when the projecting port 5 is turned and tightened. In the pressed state, the flanged nut 6 is prevented from turning.

FIG. 5 shows an embodiment in which the outer joint B of the drive shaft A is pulled out according to the present invention constructed as described above. The support bolt 4 is removed, and the groove of the upper and lower arms of the shackle 1 is removed. The drive shaft is inserted into the drive shaft 4 with the part opened, the contact guide 2 is applied to the drive shaft A, the fixing bolt 3 is turned, and the drive shaft A is inserted between the fixing bolt and the contact guide 2. The support bolt 4 which has been tightened so as to be pinched and removed is screwed in, and the support bolt is turned into a hole 4a of a turning head of the support bolt, turned and tightened, and the upper and lower groove portions of the shackle 1 are firmly supported to drive. Fix to shaft A.

Next, the bolts 5, 5 are turned, and the nuts 6, 6 at the tips of the bolts 5 are applied to the front surface of the outer joint B, and the bolts 5 are tightened. As shown in FIG. 6, the snap ring C fitted into the groove at the tip of the spline shaft of the drive shaft A fits into the chamfer of the spline bearing hole of the inner race B1 of the outer joint B fitted with the spline shaft. At the same time, the outer joint B is supported so as not to move. When the inner race B1 is hit in this state, the outer diameter of the snap ring C can be easily reduced, so that the outer joint B can be safely removed from the drive shaft A with a small hitting force without damaging the snap ring C. Can be extracted.

[0022]

[Effect of the invention]

 In the present invention, the driveshaft for the front wheel drive of the automobile is detached from the driveshaft without being detached from the vehicle body, so that the outer joint can be removed. This eliminates the need to remove the shaft assembly from the car body, or to remove the drive joint inner joint.

Further, the outer joint is supported by a side wall of the outer joint with a support bolt so as not to move, and a snap ring for retaining is inserted into the spline bearing with a chamfered portion. With this configuration, the snap ring can be quickly and safely extracted with a small impact without being damaged by the snap ring being crushed or broken.

From the above, the replacement and repair time of the rubber boot can be shortened, and the replacement and repair cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a side sectional view showing an assembly configuration of a drive shaft and an outer joint.

FIG. 3 is a sectional view taken along the line SS in FIG. 1;

FIG. 4 is a sectional view taken along line TT of FIG. 1;

FIG. 5 is a perspective view illustrating an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a main part showing a state where an outer joint is stretched by a stretch bolt.

[Explanation of symbols]

 Reference Signs List A Drive shaft A1 Spline shaft B Outer joint B1 Inner race B2 Steel ball C Snap ring D Rubber boot 1 Shackle 1a Boss 1b Through hole 1c Screw hole 2 Patch guide 3 Fixing hood 4 Support bolt 4a Hole 5 Protrusion bolt 6 Nut with flange 7 Sub washer 8 Flat washer 9 Sleeve

Claims (4)

[Utility model registration claims] 1. A shackle formed in a U-shape, a contact guide provided on one inner side of an upper and lower arm of the shackle,
A fixing bolt provided on the facing arm of the guide by tapping, a support bolt for supporting the groove of the upper and lower arms of the shackle, and a tapping screw provided on the side of the upper and lower arms of the shackle in the lateral direction. With a strut bolt
The contact guide is brought into contact with a drive shaft for an automobile, and is tightened and fixed with a fixing bolt.The support bolt is used to support a groove of a shackle. Outer joint extraction tool for automobile drive shafts. 2. A boss is provided at a groove portion of an upper and lower arm of a shackle formed in a U-shape, a through hole is provided in one of the bosses, and another boss is formed substantially concentric with the through hole. 2. The automobile according to claim 1, wherein a screw hole is provided in the through hole, and a screw is screwed into the screw hole through a support bolt having a turning head in the through hole to support a groove of the upper and lower arms of the shackle. For removing the outer joint of a drive shaft for a vehicle. 3. The vehicle drive according to claim 1, wherein a plurality of strut bolts are provided in a lateral direction by tapping on side surfaces of the upper and lower arms of the shackle opposite to each other. Tool for removing the outer joint of the shaft. 4. A flanged nut is provided at a tip end of a strut bolt, a gap is provided between a screw hole of the flanged nut and a tip end of the strut bolt, and an elastic sleeve is interposed in the gap. The outer joint extracting tool for a drive shaft for an automobile according to any one of claims 1 to 3, wherein the tool is mounted.