JP3101330U - Rear shaft puller device - Google Patents

Abstract

A rear shaft puller device capable of easily extracting a rear shaft without using a press-fitting machine is provided.
A pipe has a fixing flange at one end. The coupling member 12 has an insertion hole 12b that is coupled to the fixing flange 16 and can be fixed to a bolt. The cylindrical portion 13a of the flange member 13 has a female screw portion 13d on the inner periphery. The push screw 14 has a male screw part 14a screwed with the female screw part 13d of the cylindrical part 13a on the outer periphery, a head part 14b inserted into the pipe 11 at one end, and a rotation engagement at the other end. It has a portion 14c. The positioning member 15 has a conical inner peripheral surface 15a that is larger on one end side and smaller on the other end side than the diameter of the front end of the rear shaft 2 coaxially with the outer surface. The positioning member 15 is inserted into the pipe 11 with the other end facing the head 14 b of the push screw 14.
[Selection diagram] Fig. 1

Description

  The present invention relates to a rear shaft puller device.

  When replacing the hub bearing of the car, pull out the rear shaft from the cone. Conventionally, the work of extracting the rear shaft is generally performed by a hydraulic press-fitting machine.

  However, since the press-fitting machine is expensive, there is a problem that the introduction cost increases.

  The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a rear shaft puller device capable of easily extracting a rear shaft without using a press-fitting machine.

  In order to achieve the above object, a rear shaft puller device according to the present invention is a rear shaft puller device for removing a rear shaft from a cone having a hub bearing and vertically protruding bolts, and a pipe, The pipe has a coupling member, a flange member, a set screw, and a positioning member, the pipe is capable of inserting the rear shaft longer than the rear shaft, has a fixing flange at one end, and has an inner peripheral end at the other end. A female screw portion, the coupling member has an insertion hole that can be coupled to the flange and fixed to the bolt, the flange member integrally has a cylindrical portion and a flange portion, and the cylindrical portion has The outer periphery has a male screw portion to be screwed with the female screw portion of the pipe, and has an internal thread portion on the inner periphery. Yes The push screw is disposed outside the pipe, the push screw has a male screw portion screwed to the female screw portion of the cylindrical portion on the outer periphery, and has a head inserted into the pipe at one end and a head at the other end. A rotating cone, the positioning member having a cylindrical outer surface that slides along the inner circumference of the pipe, and a cone that is larger at one end and smaller at the other end than the diameter of the tip of the rear shaft. An inner peripheral surface inclined in a shape of a circle is coaxial with the outer surface, and the other end is inserted into the pipe with the other end facing the head of the set screw.

  The rear shaft puller device according to the present invention is used to remove the rear shaft from the cone when replacing the hub bearing of the vehicle. To remove the rear shaft, first, insert the rear shaft into the pipe from one end of the pipe. The bolt of the cone is inserted into the insertion hole of the connecting member, and fixed with the nut. When a rotating tool such as a wrench or a spanner is engaged with the rotating engagement portion of the push screw and the push screw is rotated with respect to the cylindrical portion of the flange member, the head is rotated at one end of the pipe while rotating. Move toward. The positioning member is pushed against the tip of the rear shaft by the head of the set screw, and slides along the inner circumference of the pipe. At this time, the center axis of the rear shaft coincides with the center axis of the rear shaft along the conically inclined inner peripheral surface of the positioning member. When the head is further moved by rotating the push screw toward one end of the pipe, the rear shaft is pushed through the positioning member, and the rear shaft can be removed from the cone. By aligning the center axis of the rear shaft with the center axis of the positioning member, the rear shaft can be easily removed. Thus, the rear shaft can be easily extracted without using a press-fitting machine.

  ADVANTAGE OF THE INVENTION According to this invention, the rear shaft puller apparatus which can extract a rear shaft easily without using a press-fitting machine can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a rear shaft puller device according to an embodiment of the present invention.
As shown in FIG. 1, the rear shaft puller device 10 includes a pipe 11, four connecting members 12, a flange member 13, a push screw 14, and a positioning member 15.

  The rear shaft puller device 10 is used for extracting the rear shaft 2 from the cone 1 as shown in FIG. The cone 1 is annular and has an inner diameter equal to the diameter of the rear shaft 2. The cone 1 has a hub bearing 3 along the inner circumference, and has four bolts 4 projecting vertically from the front of the ring. The outer periphery of the cone 1 is fitted into the inner periphery of an annular back plate 5. The rear shaft 2 is fitted on the inner periphery of the cone 1 such that the tip is disposed on the bolt 4 side with respect to the cone 1. The rear shaft 2 has a wheel 6 attached to the rear end.

  As shown in FIG. 1, the pipe 11 is longer than the rear shaft 2, has an inner diameter larger than the diameter of the rear shaft 2, and is capable of inserting the rear shaft 2. The pipe 11 has internal thread portions 11a and 11b on the inner circumference at both ends. The pipe 11 has a fixing flange 16 at one end, and has a holding member 17 at the center of the outer periphery. The fixing flange 16 integrally has a cylindrical portion 16a and a flange portion 16b. The cylindrical portion 16a has a male screw portion 16c which is screwed with the female screw portion 11a at one end of the pipe 11 on the outer periphery, and has an inner diameter larger than the diameter of the rear shaft 2. The flange portion 16b is provided at one end of the cylindrical portion 16a, has a larger diameter than one end of the pipe 11, and is arranged outside the pipe 11. The holding member 17 is formed by bending both edges of the rectangular plate perpendicularly to the same surface side of the rectangular plate. The holding member 17 is fixed to the outer periphery of the pipe 11 so as to sandwich the pipe 11 between both edges.

  Each coupling member 12 is formed to be elongated, and has a fixing portion 12a that is bent substantially vertically at one end. The fixing portion has an insertion hole 12 b that can be fixed to the bolt 4. Each coupling member 12 is arranged on the opposite side of the pipe 11 with respect to the flange portion 16b, and the other end is coupled to the flange portion 16b so that the fixing portion 12a is arranged outside the central axis of the pipe 11. I have. Each connecting member 12 is connected movably along the periphery of the flange portion 16b in a state substantially parallel to the length direction of the pipe 11.

  The flange member 13 has a cylindrical portion 13a and a flange portion 13b integrally. The cylindrical part 13a has a male screw part 13c which is screwed with the female screw part 11b at the other end of the pipe 11 on the outer circumference, and has a female screw part 13d on the inner circumference. The flange portion 13b is provided at one end of the cylindrical portion 13a, has a larger diameter than the other end of the pipe 11, and is disposed outside the pipe 11.

  The push screw 14 is formed in a columnar shape, and has a male screw portion 14a which is screwed with the female screw portion 13d of the cylindrical portion 13a on the outer periphery. The push screw 14 is inserted into the pipe 11 at one end, and has a head 14b having a large diameter. The other end has a rotation engaging portion 14c having a hexagonal cross section.

  The positioning member 15 is formed in a cylindrical shape, and has an outer diameter slightly smaller than the inner diameter of the pipe 11. The positioning member 15 has a cylindrical outer surface that slides along the inner circumference of the pipe 11. The positioning member 15 has a conical inner peripheral surface 15a that is larger on one end side and smaller on the other end side than the diameter of the front end of the rear shaft 2 coaxially with the outer surface. The positioning member 15 is inserted into the pipe 11 with the other end facing the head 14 b of the push screw 14.

Next, the operation will be described.
The rear shaft puller device 10 is used to remove the rear shaft 2 from the cone 1 when replacing the hub bearing 3 of the vehicle. As shown in FIG. 3, in order to extract the rear shaft 2, first, the rear shaft 2 is inserted into the pipe 11 from one end of the pipe 11. The bolt 4 of the cone 1 is inserted into the insertion hole 12 b of the coupling member 12 and fixed with the nut 7. The holding member 17 is sandwiched by a vice or the like, and is fixed so that the pipe 11 does not rotate. When a rotating device such as a wrench or a wrench is engaged with the rotating engagement portion 14c of the push screw 14 to rotate the push screw 14 with respect to the cylindrical portion 13a of the flange member 13, the head 14b of the push screw 14 It moves toward one end of the pipe 11 while rotating.

  The positioning member 15 is pushed against the tip of the rear shaft 2 by the head 14 b of the push screw 14 and slides along the inner circumference of the pipe 11. At this time, the center axis of the rear shaft 2 coincides with that of the positioning member 15 along the inner peripheral surface 15a of the positioning member 15 that is inclined in a conical shape. When the head screw 14 b is further moved toward one end of the pipe 11 by further rotating the push screw 14, the rear shaft 2 is pushed via the positioning member 15, and the rear shaft 2 can be removed from the cone 1. By aligning the center axis of the rear shaft 2 with the center axis of the positioning member 15, the removal of the rear shaft 2 can be facilitated. Thus, the rear shaft can be easily extracted without using a press-fitting machine.

It is (a) front view and (b) sectional drawing which show the rear shaft puller apparatus of embodiment of this invention. It is a side view which shows the cone in which the rear shaft was inserted. FIG. 2 is a partially cutaway front view showing a use state of the rear shaft puller device shown in FIG. 1.

Explanation of reference numerals

Reference Signs List 1 cone 2 rear shaft 3 hub bearing 4 bolt 5 back plate 6 wheel 7 nut 10 rear shaft puller device 11 pipe 12 coupling member 13 flange member 14 push screw 15 positioning member 16 fixing flange 17 clamping member

Claims (1)

A rear shaft puller device for removing a rear shaft from a cone having a hub bearing and a bolt vertically projected,
Having a pipe, a coupling member, a flange member, a set screw, and a positioning member,
The pipe is capable of inserting the rear shaft longer than the rear shaft, has a fixing flange at one end, and has a female screw portion at the other end inner circumference,
The coupling member has an insertion hole that can be coupled to the flange and fixed to the bolt,
The flange member has a tubular portion and a flange portion integrally, the tubular portion has a male screw portion screwed with a female screw portion of the pipe on an outer periphery, and has a female screw portion on an inner periphery, The flange portion is provided at one end of the tubular portion, has a diameter larger than the other end of the pipe, and is disposed outside the pipe,
The push screw has a male screw portion screwed to the female screw portion of the cylindrical portion on the outer periphery, a head portion inserted into the pipe at one end, and a rotation engaging portion at the other end. ,
The positioning member has a cylindrical outer surface that slides along the inner circumference of the pipe, and has an inner circumferential surface inclined in a conical shape that is larger at one end side and smaller at the other end side than the diameter of the front end of the rear shaft. Having the same axis as the outer surface, the other end is inserted into the pipe toward the head of the set screw,
Features a rear shaft puller device.

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