WO2003055647A1

WO2003055647A1 - Gear puller

Info

Publication number: WO2003055647A1
Application number: PCT/KR2002/002354
Authority: WO
Inventors: Kyung Bae Seo
Original assignee: Kyung Bae Seo
Priority date: 2001-12-21
Filing date: 2002-12-13
Publication date: 2003-07-10
Also published as: KR200285734Y1; AU2002367157A1

Abstract

The present invention has six supporting raised parts of the elevation body of which three of them are longer than the rest so that the long and short parts are arranged alternately. The conventional gear fuller's size is limited, so one must change the gear fuller to separate the other larger gears and bearings. However, the present invention has the following merits: it is possible to separate larger gear and bearings during operation on time; the hanging grooves of jaws are made toward only one direction, not adversely; the both hanging grooves of jaws and the controlling holes are made at different distances to each other, so that it is possible to work in accordance with the size of objects by adjusting the controlling holes; the grooves and lever are made on the supporting raised part of the elevation body, so that it is possible to work conveniently if one hangs the plate pin, which is projected from the supporting raised parts' grooves by moving up the lever at the supporting raised part of the elevation body, to the supporting raised grooves; with iron bearings in the cap. Only the stick of the screw is rotated and the cap of the screw remains motionless so that the problem of the conventional gear fuller, namely that the cap and screw rotate simultaneously, is solved.

Description

GEAR PULLER

BACKGROUND OF THE INVENTION

Field of the Invention:

The invention relates generally to the gear puller which consists of two jaws which

are used to separate the gear and bearings from the shaft or the three jaws as per above.

Description of the Prior Art:

Generally, the present invention has the following structure: the elevating body has two jaws which are formed at the interval of 180 degrees or three jaws which are formed at an interval of 120 degrees with the hexagonally headed screw on its upper side. The elevating body moves up and down by the rotation of the hexagonally headed screw— a couple of plates are made on the edge of the supporting raised part of the above elevating body which has two or three jaws. The jaws are connected by plates— when one uses this gear puller, he rotates the hexagonally headed screw using a wrench or spanner with the exterior of the bearing or gear hang by the jaws and the supporting part of center contacted on the lower edge of the screw which is in the center of the shaft; as the elevating body moves along the screw, the gear and bearings are separated.

However, the conventional gear puller has the following drawbacks: because the connecting part of the plates of the elevating body and jaws consist of bolts and nuts, the cap moves randomly and not according to the user's intention. The user has to use the bolts and nuts, when he wants to change the hanging grooves of the jaws. Since the above hanging grooves of the jaws of the gear puller are made in the reverse direction and in the shape of an 'S', one has to loosen every bolt and nut and then tighten them to affix the jaws adversely. Because a cap which is covered beneath the lower edge of the

screw rotates with the stick of the screw at the same time, it is difficult to use.

SUMMARY OF THE INVENTION The present invention is that of a hand gear puller which is devised to be used to. easily separate gears and bearings of rotating shafts in various types of industrial machinery. The connecting part of the elevated body and plate in the conventional gear puller consists of bolts and nuts. Also, its hanging projection is reversely directed. Whenever one changes the hanging projections, the bolts and nuts are used repeatedly. Therefore, it is inconvenient. Also, because there are some limits to the size of the gear and bearings which can be separated by the conventional gear puller, one has to change the gear puller to separate larger gear and bearings. Thus, the present invention has six supporting raised parts which are arranged at an interval of 60 degrees and three of them are longer than the others so that the longer raised parts and the shorter ones are alternated. Thus, it is possible to separate bearings from two kinds of gears. That is to say, the present invention has the following structural characteristics: After one separation round, it is possible to separate bearings from the larger gears than that of former workings without the help of -the other gear puller; at this time, one has only to hang the plate pin of the jaw onto the groove of the supporting raised parts; the suspended grooves are formed toward one direction so that it is possible to hang the suspended grooves only by operating the lever and changing the directions of the grooves of the supporting raised parts of the elevating body without separating the bolts and nuts; a cap into which the iron

bearings are inserted is covered over the lower edge of the center of the screw; Therefore, when the center of the screw is rotated, its cap which is on the lower part, is not rotated. Thus, the rotating friction is reduced.

BRIEF DESCRIPTION OF THE DRAWINGS

The aforementioned aspects and other features of the present invention will be explained in the following description, taken in conjunction with the accompanying drawings, wherein:

Fig. 1 is the perspective view in which the supporting raised part of the elevating body of the gear puller is illustrated, as an execution example of the present invention. Fig. 2 is the front view in which the structure of the gear puller is illustrated, as an execution example of the present invention.

Fig. 3 illustrates the brief view of the lower edge of the center of the screw DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

11 - hexagonal head 12 - gear's teeth 12 - supporting raised part

15 - hanging groove 15 a - hanging groove 16 - j aw 17 - supporting raised part 18 - controlling hole

20 - spiral stick of screw

21 - pin 22 - washer 23 - plate 25 - bolt 27- elevating body 30 - cap

31 - iron bearing 33 - lever 35 - spring

DETAELED DESCRIPTION OF PREFERRED EMBODIMENTS

The present invention is proposed and devised to solve the above mentioned problems. The present invention has six supporting raised parts of the elevation body --

three of them are longer than the others so that the long parts and short parts are alternated. Since the conventional gear puller's size is limited, one must change the gear puller to separate other larger gears and bearings. However, the present invention has the following merits: only using this gear puller, is it possible to separate larger gears and bearings during operation; the hanging grooves of the jaws are made facing in only one direction, not adversely; both the hanging grooves of the jaws and the controlling holes are made at varying distances from each other, so that it is possible to work in accordance with the size of objects by adjusting the controlling holes. The grooves and lever are made on the supporting raised part of the elevation body, so that it is possible to work conveniently if one hangs the plate pin, which is projected from the supporting raised parts' grooves by moving up the lever at the supporting raised part of the elevation body,' to the supporting raised grooves; with iron bearings in the cap, only the stick of screw is rotated with the cap of screw stopped so that the problem of the conventional gear puller namely, that that the cap is rotated with the screw at the same time is solved.

The structure and function of the present invention

Below is the description of the newly devised gear puller which is referred to in the attached figures.

Fig. 1 is the perspective view in which the supporting raised part of the elevating

body of the gear puller is illustrated, as an example of the use of the present invention. Fig. 2 is the front view in which the structure of the gear puller is illustrated, as an example of the use of the present invention. Fig. 3 illustrates the brief view of the lower edge of the center of the screw . As shown in Fig 1 and 3, the present invention has the following structural features; the screw (20) cap (30) which is on the center at the lower side of the supporting part and the hexagonal head (11) at its upper side; the elevating body that has six supporting raised parts (13)(17) which are arranged at an interval of 60 degrees centering the above mentioned screw(20); the symmetrically arranged plates(23) which are assembled to link the jaws(16) with the supporting raised part(13)(17) of the elevating body; two controlling holes that are made to be connected to the edges of the above plates(23); the jaws(16) that have hanging grooves(15)(15a). The present invention has the following functional characteristics: the three supporting raised parts(13) of the six supporting raised parts(3)(17) of the elevating body are longer than the others, and the long and the short ones are arranged alternately so that it is possible to separate the larger gear and bearings during operation, only using this gear puller. This contrasts with the conventional gear puller which has some limits to separating the various gears and bearings; the hanging grooves(15)(15a) of jaws(16) are made facing in one direction, not

opposite each other, and both the hanging grooves(15)(15a) of jaws(16) and the two controlling holes(18) are arranged at varying distances, so that it is possible to use it with

various sizes of objects by adjusting the controlling holes. The grooves(32) and lever(33) are made on the supporting raised part(13)(17) of the elevation body, so that it is possible to work conveniently if one hangs plate pin(23), which is projected from the supporting raised parts(13)(17)' grooves(32) by moving up the lever(33) at the supporting raised part(13)(17) of the elevation body(27), to the supporting raised parts(13)(17)' grooves(32); with iron bearings(31) in the cap(30), only the stick of the screw(20) is rotated with the cap(30) of the screw remaining still so that the problem of the conventional gear puller that the cap(30) and the screw(20) are rotated at the same time is solved.

Claims

WHAT IS CLAIMED IS:

1. The gear puller has the following structural characteristics: the screw(20) that has a center supporting cap(30) at the hexagonal head(l 1) on its upper and lower sides; the elevating body(27) that has six supporting raised parts(13)(17)

at intervals of 60 degrees centering the above screw(20); the jaws(16) that has hanging grooves(15)(15a) which protrude in only one direction from the upper and lower sides and the two controlling holes(18); the plate(23) which is connected to the jaws(16) and the supporting raised parts(13)(17) to link the

supporting raised parts(13)(17) with the jaws(16), which have gear teeth(12) on

some parts of it

2. The gear puller in which the long supporting parts(13) and the short supporting parts(17) that are formed around the above screw(20) are arranged alternatingly, and in which the grooves(32) and the lever(33) are made at those supporting raised parts(13)(17)

3. Regarding number 1 above, the gear puller has the characteristics that the distances between the controlling holes(18) of jaws(16) and the hanging grooves(15)(15a) vary respectively in order to function according to the various sizes of objects.

4. Regarding number 1 above, the gear puller has the characteristics that the cap (30) at the lower side of the screw (20) has a smaller diameter than the

screw(20), and that the iron bearings(31) are inserted into the above cap(30) so

as to rotate only the screw.