JPH0727766U - Pulley puller - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to easily remove from the shaft of any type of pulley. [Structure] The pulley puller 20 includes an elongated base body 21, and a screw shaft 22 is screwed to the center of the base body 21 in the longitudinal direction. Arms 25A and 25B are slidably supported by the slits 24 formed at both ends of the base body 21 centered around the screw shaft 22, and the hooks 3 are provided at the tips of the arms 25A and 25B.
0 is attached using bolts 29. This hook 30
Has a convex shape corresponding to the shape of the recess for engaging the belt of the pulley 31 that is disengaged from the shaft 32, and is formed to be engageable with the recess of each pulley 31. By attaching the hooks 30 corresponding to pulleys of various shapes to the tips of the arms 25A and 25B in a replaceable manner, even if there is no gap between the engine body and the pulley, or the end face of the pulley is removed. Even in each type of pulley in which there is no screw hole for use, it is possible to easily separate from the shaft.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pulley puller for removing a pulley from a shaft.

[0002]

[Prior art]

 Conventionally existing pulley pullers include, for example, one shown in FIG. This pulley puller 1 comprises a base 4 arranged to face a pulley 3 mounted on a shaft 2, and a screw shaft 6 screwed into a screw hole 5 arranged in the center of the base 4. Here, the pulley 3 is an engine pulley arranged in front of the engine of the automobile, and is arranged with a gap 8 provided between the pulley 3 and the engine body 7. Bolt insertion holes 9 are formed at two fixed positions outside the screw hole 5 of the base body 4, and bolts 10 are inserted into the bolt insertion holes 9. An L-shaped arm 11 is screwed onto the bolt 10, and a hooking claw 12 that is bent inward is provided at the tip of the arm 11.

To disengage the pulley 3 from the shaft 2 by using the pulley puller 1, first, the floating portion 13 at the tip of the screw shaft 6 is abutted against the mounting hole 14 at the end of the shaft 2, and then the pulley 3 The hook 8 of the arm 11 is engaged with the gap 8 between the engine 3 and the engine body 7. In this state, if an impact wrench or ratchet wrench is attached to the base end of the screw shaft 6 so as to exert an axial pressing force on the shaft 2, the hook 3 causes the pulley 3 to move from the shaft 2 to the shaft 2. It is possible to leave.

However, depending on the type of vehicle, there may be no gap between the engine body 7 and the pulley 3, and in the conventional pulley 3 of this type, the pulley puller 15 shown in FIGS. Was used. Similar to the pulley puller 1, the pulley puller 15 is formed by screwing a screw shaft 6 into the center of the base body 4, and elongated holes 16 are formed at two locations outside the screw shaft 6 of the base body 4. The heads of the long bolts 17 are inserted into the respective long holes 16, and the tips of the long bolts 17 are screwed into the screw holes for removal provided in the respective end face portions of the pulley 3A in advance.

When the pulley 3A is detached from the shaft 2 by the pulley puller 15, as shown in FIG. 10, the wrench 19 fixes the base body 4 and the wrench 19 imparts a rotational force to the screw shaft 6. Then, the axial pressing force is applied to the shaft 2 from the floating portion 13 at the tip of the screw shaft 6. Then, the pulley 3A screwed to the long bolt 17 is pulled in the axial direction, and the pulley 3A can be separated from the shaft 2.

[0006]

[Problems to be solved by the device]

 However, depending on the type of vehicle, there are some pulleys that do not have a threaded hole for screwing the long bolt 17 in advance on the end face portion of the pulley, so that neither of the pulley pullers 1 and 15 can be used in such a pulley. . In the case of a pulley in which there is no gap between the engine body 7 and the pulley and there is no screw hole for screwing the long bolt 17, a crowbar or screwdriver is inserted between the engine body and the pulley, and these parts are By opening a gap and repeating these operations in the circumferential direction of the pulley, they were separated from the shaft. However, with this method, when attempting to separate the pulley from the shaft, the shaft and pulley are damaged, and in some cases the shaft may be broken or bent, and the entire shaft must be replaced.

The present invention has been made in view of such a conventional problem, and an object of the present invention is to easily remove the pulleys of any type from the shaft.

[0008]

[Means for solving problems]

 In order to achieve the above-mentioned object, the present invention has a base body arranged to face a pulley mounted on a shaft and a shaft arranged in the center of the base body and moved in the axial direction of the shaft arranged to face the base body. And a pressing body that abuts against the end of the shaft and exerts a pressing force in the axial direction on the shaft, and at least two or more are supported outside the base body, and the tip can be engaged with the pulley. A pulley puller that includes an arm that supports a hooking claw and that allows a pulley to be detached from the shaft by the hooking claw by the action of a pressing force applied to the shaft of the pressing body. Each hooking claw is a belt of a corresponding pulley. Corresponding to the engaging recess, the arm can be engaged with the recess and can be attached to and detached from the tip of the arm.

[0009]

[Action]

 According to the present invention, a hooking claw having a convex shape capable of engaging with the belt engaging recess of the corresponding pulley can be attached to and detached from the tip of each arm. It is possible to easily remove the pulley from the shaft even when there is no screw hole in the end face portion or when there is no gap between the engine body and the pulley. That is, according to the pulley puller of the present invention, a hooking claw having a convex portion corresponding to the concave shape of the pulley to be detached is formed in advance, the hooking claw is attached to the tip of the arm, and the hooking claw is used for engaging the belt. The pulley can be disengaged from the shaft along the axial direction by being hooked in the concave part of the shaft and applying a pressing force to the shaft by the pressing body. Therefore, any type of pulley can be easily removed from the shaft.

[0010]

【Example】

 1 and 2 show a pulley puller according to an embodiment of the present invention. This pulley puller 20 is provided with an elongated base body 21 along the Y direction opposite to the X direction, and a screw shaft 22 (pressing body) is formed in a screw hole formed at the center of the base body 21 in the longitudinal direction. It is made by screwing. The screw shaft 22 is provided with a floating portion 23 at its tip and is arranged along the X direction opposite to the Y direction. Slits 24 are formed along the longitudinal direction at both ends of the base body 21 centered on the screw shaft 22. Arms 25A and 25B are slidably inserted in the slits 24 in the Y direction. Of the flat plate-shaped arms 25A and 25B, two through-holes 26 are formed in the longitudinal intermediate position of one arm 25A, and two through holes 26 are formed in the longitudinal intermediate position of the other arm 25B. A screw hole 27 is formed. An adjusting screw 28 arranged along the arrow Y direction is inserted into each through hole 26, and a tip end portion of the adjusting screw 28 inserted through these through holes 26 is screwed into a screw hole 27. .

Two through holes are formed along the Y direction at the tip of each arm 25A, 25B, and bolts 29 are inserted into these through holes, respectively. Each bolt 29 is inserted from the outside of the arm 25A, 25B toward the inside (the tip side of the screw shaft 22), and the hook 29 is screwed to the tip side of the bolt 29. That is, a screw hole is preliminarily screwed into the hooking claw 30, and a bolt 29 inserted into the front end of each arm 25A, 25B is screwed into the screw hole of the hooking claw 30 to cause each arm 25A. , 25B, the hooking claws 30 are attached to the tips thereof. The hooking claw 30 corresponds to a recess for engaging the belt of the pulley for detachment work, and has a convex shape that can be engaged with the recess. The hooking claw 30 corresponds to a pulley having a recessed shape that differs depending on the vehicle model and manufacturer. 30 is also formed in advance so as to have a corresponding convex shape and curvature (curvature of the pulley). In the pulley 31 shown in FIG. 2, three protrusions are formed in the recess for belt engagement, and therefore the hooking claw 30 corresponding to this pulley 31 is formed with a recess that meshes with the protrusion. .

With the pulley puller 20 formed in this way, when the pulley 31 attached to the shaft 32 arranged to face each other as shown in FIG. 2 is detached from the shaft 32, first, the base ends of the arms 25 A and 25 B are slit. It is slid outward along 24 so that the floating portion 23 at the tip of the screw shaft 22 abuts the screw hole 33 formed in the end surface of the shaft 22. Next, the arms 25A and 25B that have been slid to the outside are slid to the inside, and the hooking claws 30 attached to the tips of the arms 25A and 25B are inserted into the recesses 34 for engaging the belt of the pulley 31 and engaged. To do. In this way, when the hooking claw 30 is engaged with the pulley 31, the adjusting screw 28 is screwed so that the longitudinal direction (X direction) of each of the arms 25A and 25B and the screw shaft 22 becomes the axial direction of the opposing shaft 32. Make adjustments to correspond. Next, an impact wrench or ratchet wrench is inserted into the head of the screw shaft 22 to apply a rotational force in the direction of arrow A to the screw shaft 22. Then, a pressing force is applied to the shaft 32 from the tip of the screw shaft 22, and the pulley 31 can be disengaged from the shaft 32 by the hooking claw 30 along the axial direction.

As the hooking claws attached to the tips of the arms 25A and 25B, various hooks are prepared in advance so as to correspond to the shape of the recess for engaging the belt of the pulley. For example, the pulley 31A shown in FIG. In this case, the tip shape is such that it can be engaged with the recess, and the hook claw 30A has the curvature shown in FIG.

Further, even the pulley 31B shown in FIG. 5 has a tip shape that can be engaged with the concave portion and has a hooking claw 30B having a curvature shown in FIG. Further, as shown in FIG. 7, the pulley puller 20 formed in this way supports the base end of the long bolt 35 in place of the above-mentioned arms 25A and 25B in the slit 24, and the tip of the bolt 35 is connected to the pulley 31C. It can also be used by being screwed into a screw hole 36 for removal formed at the end of the. Further, as shown in FIG. 8, an L-shaped arm 37 that has been conventionally used is supported in the slit 24 portion, and it can be used correspondingly to a vehicle type having a gap between the engine body and the pulley.

As described above, according to the pulley puller 20 according to the above-described embodiment, the ridges that correspond to the belt engaging recesses of the corresponding pulleys at the tip ends of the arms 25A, 25B and can be engaged with the recesses. Since the hooking claw 30 provided with is detachable by the bolt 29, even if there is no screw hole for removal on the end face of the pulley or there is no gap between the engine body and the pulley depending on the vehicle model, It is possible to easily remove the pulley 31 from the 32. That is, according to the above-mentioned pulley puller, the hooking claw 30 having a convex portion or a curvature corresponding to the concave shape of the pulley 31 to be detached is formed in advance, and the hooking claw 30 is attached to the tips of the arms 25A and 25B to be hooked. The pulley 31 can be disengaged from the shaft 32 along the axial direction by hooking the claw 30 in the belt engaging recess 34 and applying a pressing force to the shaft 32 by the screw shaft 22.

[0016]

[Effect of device]

 As described above, according to the present invention, any type of pulley can be easily detached from the shaft.

[Brief description of drawings]

FIG. 1 is a perspective view showing a pulley puller according to an embodiment of the present invention.

FIG. 2 is a side view showing a state in which the pulley is separated from the shaft by the pulley puller shown in FIG.

FIG. 3 is a side view showing a state in which another hooking claw is attached to the arm of the pulley puller.

FIG. 4 is a plan view of the hooking claw of FIG.

FIG. 5 is a side view showing a state in which another hooking claw is attached to the arm of the pulley puller.

FIG. 6 is a plan view of the hooking claw of FIG.

FIG. 7 is a side view showing a state in which the pulley is separated from the shaft by another method by the pulley puller.

FIG. 8 is a side view of another method of using the pulley puller.

FIG. 9 is a side view showing a state in which a pulley is separated from a shaft by a conventional pulley puller.

FIG. 10 is a perspective view showing a state where the pulley is separated from the shaft by another conventional pulley puller.

FIG. 11 is a side view of the same.

[Explanation of symbols]

 1, 15, 20 Pulley puller 2, 32 Shaft 3, 31, 31A, 31B, 31C Pulley 4, 21, Base body 5, 27, 33, 36 Screw hole 6, 22 Screw shaft 7 Engine body 8 Gap 9 Bolt insertion hole 10, 29 Bolt 11, 25A, 25B Arm 12, 30, 30A, 30B Hooking claw 13, 23 Floating part 14 Mounting hole 16 Long hole 17, 35 Long bolt 18 Spanner 19 Wrench 24 Slit 26 Through hole 28 Adjusting screw 34 Recess

Claims (1)

[Scope of utility model registration request] 1. A base body arranged to face a pulley mounted on a shaft, and a center end of the base body, which is movable along an axial direction of a shaft arranged to face the base body. A pressing body that abuts against the portion and exerts a pressing force in the axial direction on the shaft, and at least two or more are supported outside the base body
A pulley puller, comprising an arm supporting a hooking claw engageable with a pulley at a tip end portion thereof, wherein the pulley can be detached from the shaft by the hooking claw by an action of a pressing force on the shaft of the pressing body, A pulley puller characterized in that each hooking claw corresponds to a recess for engaging a belt of a corresponding pulley, has a convex shape that can be engaged with the recess, and is attachable to and detachable from the tip of the arm.