TWI704984B - Shaft yoke puller - Google Patents

Abstract

A shaft yoke puller is provided and adapted for a yoke. The yoke is removably disposed on a shaft. The shaft yoke puller includes a base and a pushing assembly. The base is adapted for being disposed on the yoke. The base has a screw hole. The pushing assembly is movably disposed on the screw hole.

Description

Yoke Puller

The present invention relates to a puller, and particularly relates to a yoke puller.

Many machine products require power transmission mechanisms to drive the operation of mechanisms located in different parts, such as torque transmission. In order to allow more diversified angles of torque transmission, the transmission shaft will be used with a universal joint or a sliding joint; among them, the yoke body of the universal joint is sleeved and positioned on the transmission shaft.

When replacement or maintenance is required, it is often necessary to disassemble the yoke of the universal joint. At this time, some maintenance personnel directly use a hammer to hit the yoke of the universal joint to force it to move relative to the drive shaft. Separate. However, this method often causes problems such as damage to the surface of the yoke body of the universal joint, structural deformation and other problems, which cause many problems, and there are shortcomings that need to be improved urgently.

Therefore, it is necessary to provide a novel and progressive yoke puller to solve the above-mentioned problems.

The main purpose of the present invention is to provide a shaft yoke puller, which is designed to assist the user to easily and quickly remove the yoke body from the shaft body under the premise of not damaging the structure.

To achieve the above objective, the present invention provides a yoke puller for a yoke body, the yoke body is detachably sleeved on a shaft body, the yoke puller includes: a base unit and a pushing component . The seat unit includes a pressing body and at least one positioning body, the pressing body is provided for abutting against the yoke body, the pressing body is penetrated with a screw hole, and the at least one positioning body is connected and positioned on the yoke body so that the The screw hole is used to hold the corresponding shaft body; the pushing component is movably screwed to the screw hole, and the pushing component is used to axially push the shaft body to drive the yoke body to move relative to the shaft body.

The following examples are only used to illustrate the possible implementation aspects of the present invention, but they are not intended to limit the scope of protection of the present invention, and are described first.

Please refer to Figures 1 to 8, which show an embodiment of the present invention, the yoke puller of the present invention, which is used for a yoke body 7, the yoke body 7 is detachably sleeved on a shaft body 8, the shaft The yoke puller includes: a base unit 1 and a pushing component 5.

The base unit 1 includes a pressing body 2 and at least one positioning body 3, the pressing body 2 is for abutting against the yoke body 7, the pressing body 2 is provided with a screw hole 21, and the at least one positioning body 3 is used for connecting and positioning In the yoke body 7, the screw hole 21 is used to hold the shaft body 8. The pushing assembly 5 is movably screwed to the screw hole 21. When the yoke body 7 is to be disassembled, the user only needs to rotate the pushing assembly 5 so that the pushing assembly 5 can be pushed against the shaft axially The body 8 drives the yoke body 7 to move relative to the shaft body 8, so that the yoke body 7 can be separated from the shaft body 8 smoothly and quickly under the premise of ensuring the structural integrity of the shaft body 8 and the yoke body 7, The whole operation process is convenient and fast.

It should be particularly noted that the pushing assembly 5 includes a pushing portion 51 and a shaft 52. The pushing portion 51 is rotatably positioned on the shaft 52, and the shaft 52 is movably screwed to the screw. Hole 21, whereby when the shaft 52 rotates and the pushing portion 51 pushes against the shaft 8, the pushing portion 51 will only provide axial force to the shaft 8, so as to ensure the yoke 7 The shaft is separated from the shaft body 8 only by the vertical pulling force, and there will be no shaking.

Specifically, when the pushing portion 51 abuts against the shaft 8, the structural configuration of the pushing portion 51 and the shaft 52 relatively rotating can prevent the pushing portion 51 from rotating relative to the shaft 8, and thus The rotation resistance encountered when the shaft 52 rotates is greatly reduced (because the pushing portion 51 and the shaft body 8 do not generate rotational friction), so that the shaft 52 rotates more smoothly, quickly, and effectively To prevent the shaft 52 from rotating when encountering excessive rotation resistance and acting in the opposite direction, causing the pressure body 2 and the yoke body 7 to shake. More definitely, when the shaft yoke puller is used for disassembly, the yoke The body 7 will not shake.

Preferably, the pushing assembly 5 further includes a bearing 53 which is accommodated in a cavity 521 of the shaft 52, and the pushing portion 51 extends into the cavity 521 to abut against the bearing 53, When the pushing portion 51 and the shaft 52 rotate relatively, the bearing 53 can effectively reduce rotation resistance (such as friction), so that the relative motion of the pushing portion 51 and the shaft 52 is smoother.

In practice, the structure of the yoke body 7 and the shaft body 8 is exemplified but not limited to. It can be seen in the universal structure of the transmission system of a vehicle. Usually the yoke body 7 includes two opposite grooves 73, so the yoke body 7 is specially designed The pressing body 2 is a long strip. The pressing body 2 includes two pressing surfaces 22. The pressing body 2 is adapted to be inserted into the two embedding grooves 73, and the two pressing surfaces 22 are respectively provided to abut against the two embedding grooves 73. A groove bottom 731 can be used to ensure that the pressing body 2 can be firmly and tightly attached to the yoke body 7 during the screw advancement of the pushing assembly 5.

More specifically, the yoke body 7 further includes a socket portion 71 and a two-fork portion 72. The socket portion 71 is sleeved on the shaft body 8, and the two-fork portion 72 extends at two ends of the socket portion 71 And the two embedding grooves 73 are respectively provided, the pressing body 2 further includes a side abutting portion 23, the side abutting portion 23 is provided between the two pressing surfaces 22, the side abutting portion 23 is provided for It extends between the two fork portions 72 and is provided for lateral abutment against the two fork portions 72; wherein, the lateral abutment portion 23 and the two pressing surfaces 22 respectively provide force in different directions to the yoke body 7 , In order to effectively improve the stability of the combination of the pressing body 2 against the yoke body 7, so that the pressing body 2 and the yoke body 7 can be reliably combined into one body.

Preferably, the pressing body 2 and the at least one positioning body 3 are different components, which can reduce the occupied volume when not in use, and facilitate storage in the tool box. In this embodiment, the at least one positioning body 3 The number is two.

In another preferred embodiment, the at least one positioning body 3 is detachably pressed against the pressing body 2, and the pressing body 2 can be forced to closely fit the yoke body 7 through the force of the pressing. In this embodiment , The two positioning bodies 3 are pressed against the two ends of the pressing body 2 respectively.

More specifically, the pressing body 2 is machined from a solid cylinder, the two pressing surfaces 22 are respectively flat, and one side of the pressing body 2 is provided with the two pressing surfaces 22 and the lateral abutting portion 23. The lateral abutting portion 23 protrudes from the two pressing surfaces 22, and the positioning body 3 straddles the pressing body 2 to maintain the other side of the semi-cylindrical body, so as to provide limits in different directions and angles.

More specifically, the positioning body 3 includes a main body 31 and two legs 32. The two legs 32 extend laterally on the main body 31 for connecting and positioning the yoke body 7, and the two legs 32 are arranged at intervals. A accommodating portion 33 is defined together with the main body 31; wherein the positioning body 3 is pressed across the pressing body 2 so that a part of the pressing body 2 is limited to the accommodating portion 33. In addition, a fitting surface 331 of the accommodating portion 33 is arc-shaped to closely fit the pressing body 2, and the arc-shaped design can effectively avoid unexpected interference or stress concentration.

The yoke 7 includes at least one set of connecting holes 74, the at least one positioning body 3 is provided with at least one through hole 34, the at least one through hole 34 is for at least one set of connecting holes 74, and a connecting member 6 passes through the The through hole 34 is used to connect the assembly hole 74 so that the positioning body 3 is positioned on the yoke body 7. Wherein, the connecting member 6 is screwed to the assembly hole 74, and the method of using the connecting member 6 to connect the existing assembly hole 74 of the yoke body 7 can effectively simplify the structure of the yoke puller and also Have better binding stability. In this embodiment, two of the set of contact holes 74 are respectively provided on the two fork portions 72, and each of the leg portions 32 is provided with the through hole 34.

In particular, the through hole 34 preferably includes a first hole 341 and a second hole 342 that communicate with each other. The diameter of the first hole 341 is larger than that of the second hole 342, and the connecting member 6 can The first hole 341 or the second hole 342 is selectively penetrated so as to be widely connected to the set of contact holes 74 of different sizes and different positions. Preferably, the ratio of the hole diameter of the second hole 342 to the hole diameter of the first hole 341 is between 0.65 and 0.8, so as to conform to the common different hole sizes, and at the same time, it can avoid the excessively large openings causing the feet The structure of section 32 is loose.

In this embodiment, the positioning body 3 includes two through holes 34, and the second hole 342 of the two through holes 34 is between the first holes 341 of the two through holes 34. The reason is that it is usually relatively For the yoke body 7 of a small size, the position of the assembly hole 74 will also be relatively inner, and on the contrary, for the yoke body 7 of a larger size, the position of the assembly hole 74 will be relatively outside.

In summary, the yoke puller of the present invention is a device specially used to disassemble the yoke body from the shaft body, which can ensure the structural integrity of the yoke body and the shaft body, and the overall structure of the shaft yoke puller is simple and reliable. Get started.

1: base unit

2: pressure body

21: screw hole

22: Pressing Noodles

23: Lateral abutment

3: positioning body

31: body

32: Feet

33: Housing

331: Fitting surface

34: Through hole

341: The first hole

342: second hole

5: Push the component

51: Push to the Ministry

52: Shaft

521: room

53: Bearing

6: Connector

7: Yoke body

71: Socket

72: Fork

73: Insert groove

731: groove bottom

74: Assembly hole

8: Shaft

Fig. 1 is an exploded perspective view of an embodiment of the present invention. 2 and 3 are diagrams of assembly steps of a yoke puller according to an embodiment of the invention. Figures 4 and 5 are diagrams of the operation of an embodiment of the invention. Figure 6 is a partial cross-sectional view of Figure 4; Figure 7 is a partial enlarged cross-sectional view of Figure 6; Fig. 8 is a side view of the positioning body pressed against the pressing body according to an embodiment of the present invention.

1: base unit

2: pressure body

21: screw hole

3: positioning body

34: Through hole

341: The first hole

342: second hole

5: Push the component

51: Push to the Ministry

53: Bearing

6: Connector

Claims (9)

A shaft yoke puller, which is used for a yoke body, the yoke body is detachably sleeved on a shaft body, the yoke puller includes: a base unit including a pressure body and at least one positioning body, the pressure The body is provided to abut against the yoke body, the pressing body is penetrated with a screw hole, and the at least one positioning body is connected and positioned on the yoke body so that the screw hole is used to hold the corresponding shaft body; a pusher assembly is movable The ground is screwed to the screw hole for pushing against the shaft body axially, thereby moving the yoke body relative to the shaft body; wherein, the yoke body includes at least one set of connecting holes, and the at least one positioning body is penetrated At least one through hole, the at least one through hole is provided to correspond to at least one set of connecting holes, and a connecting member passes through the through hole to connect the set of connecting holes, so that the positioning body is positioned on the yoke. The yoke puller according to claim 1, wherein the pressing body and the at least one positioning system are different components, and the at least one positioning system is detachably pressed against the pressing body. The yoke puller according to claim 2, wherein the positioning body includes a body and two legs, and the two legs extend laterally from the body for connecting and positioning the yoke body, and the two legs are spaced apart It is configured to define an accommodating part together with the main body; wherein the positioning system straddles the pressure body so that a part of the pressure body is limited to the accommodating part. The yoke puller according to claim 1, wherein the through hole includes a first hole and a second hole that communicate with each other, and the diameter of the first hole is larger than that of the second hole, and the connecting member can The first hole or the second hole is selectively penetrated. A shaft yoke puller, which is used for a yoke body, the yoke body is detachably sleeved on a shaft body, the yoke puller includes: a base unit including a pressure body and at least one positioning body, the pressure body Is provided for abutting against the yoke body, the pressing body is penetrated with a screw hole, and the at least one positioning body is connected and positioned on the yoke body so that the screw hole is used to hold the corresponding shaft body; a pusher assembly, movably Screwed to the screw hole for pushing against the shaft body axially, thereby moving the yoke body relative to the shaft body; the yoke body includes two opposite grooves, the pressing body is elongated, and the pressing body It includes two pressing surfaces, the pressing body is used to be inserted into the two embedding grooves, and the two pressing surfaces are respectively used to abut against the bottom of one of the two embedding grooves. The yoke puller according to claim 5, wherein the yoke body further includes a socket part and a two-fork part, the socket part is sleeved on the shaft body, and the two-fork part extends between the socket part The two ends are respectively provided with the two embedding grooves, the pressing body further includes a lateral abutting portion, the lateral abutting portion is arranged between the two pressing surfaces, and the lateral abutting portion is for extending into the two Between the forks and for lateral abutment against the two forks; wherein, the lateral abutment portion and the two pressing surfaces respectively provide force in different directions to the yoke. The yoke puller according to any one of claims 1 to 6, wherein the pushing component includes a pushing portion and a shaft, the pushing portion is rotatably positioned on the shaft, and the shaft The screw hole is movably screwed. The yoke puller according to claim 7, wherein the pushing component further includes a bearing, the bearing is accommodated in a chamber of the shaft, and the pushing portion extends into the chamber to abut against the Bearing. The yoke puller according to claim 3, wherein the yoke body includes two opposing grooves, the pressing body is elongated, the pressing body includes two pressing surfaces, and the pressing body is adapted to be inserted into the two The two pressing surfaces are respectively provided to abut against the bottom of one of the two embedding grooves; the yoke body further includes a socket part and two fork parts, the socket part is sleeved on the shaft body, and the two The fork extends at the two ends of the socket and is respectively provided with the two embedding grooves. The pressing body further includes a lateral abutting portion which is arranged between the two pressing and abutting surfaces. The abutment portion is provided to extend between the two fork portions and is provided for lateral abutment against the two fork portions; wherein the lateral abutment portion and the two pressing surfaces respectively provide force in different directions to the yoke body ; The through hole contains one of the connected A first hole and a second hole, the diameter of the first hole is larger than that of the second hole, the connecting member can selectively penetrate the first hole or the second hole; the positioning body includes two through holes , The second hole of the two through holes is between the first holes of the two through holes; the number of the at least one positioning body is two; each of the feet is provided with a through hole; the pressure system is composed of a solid cylinder The two pressing surfaces are respectively flat, one side of the pressing body is provided with the two pressing surfaces and the lateral abutting portion, and the lateral abutting portion protrudes from the two pressing surfaces, The positioning body straddles the other side of the pressure body to maintain a semi-cylinder; a fitting surface of the containing portion is arc-shaped to closely fit the pressure body; the connecting piece is screwed to the set of connecting holes; The ratio of the aperture of the second hole to the aperture of the first hole is between 0.65 and 0.8; the pushing component includes an pushing part and a shaft, the pushing part is rotatably positioned on the shaft , The shaft is movably screwed to the screw hole; the pushing assembly further includes a bearing, the bearing is accommodated in a chamber of the shaft, and the pushing portion extends into the chamber to abut against the Bearing.

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