KR20120072609A

KR20120072609A - Apparatus for fixing and removing cylindrical bearing

Info

Publication number: KR20120072609A
Application number: KR1020100134450A
Authority: KR
Inventors: 장기철
Original assignee: 장기철
Priority date: 2010-12-24
Filing date: 2010-12-24
Publication date: 2012-07-04

Abstract

The present invention is a fastening and removing device (1) of the cylindrical bearing that can disassemble and repair and check the hub installed in the drive in a short time effectively, the front is open and the rear has a closed end surface and is transferred to this closed end surface Body 100 is formed with a hole () for inserting the screw 300: and the end of the transfer screw 300 fitted in the hole is passed through the bearings installed in the bicycle hub to be easily removed A transfer rod 200 having a jaw 201 and an inclined surface 202; And a transfer screw 300 screwed to the rear end of the transfer rod 200. And a plurality of cutouts 411 and elastic pieces 412 such that the transfer rod 200 is inserted and the front end thereof is caught by the catching jaw 201 of the transfer rod 200 and is opened by the inclined surface 202. A bearing removing device 400 having a bearing removing bundle 413 formed therein; And a handle 500 that is screwed to the rear end of the transfer screw 300 so that the transfer rod 200 can be easily moved forward or backward.

Description

Apparatus for fixing and removing cylindrical bearing

The present invention relates to a device for fixing and removing a cylindrical bearing, and in particular, the present invention is a cylindrical bearing that can be disassembled and repaired and inspected by a hub that is effectively installed in all driving devices, that is, a bearing installed in a hub. It relates to a device for fixing and removing.

Generally, all drive units use hubs, in which bearings are installed to facilitate shaft rotation.

As an example of application, for a bicycle hub, the hub is a gathering part of the bicycle wheels, and therefore, the hub must be strong because the bicycle shaft composed of two hubs, front and rear, directly receives all the loads and impacts from the road surface. Since it plays a very important role in rolling performance, the coefficient of friction should be small.

Conventional bicycle hubs, as shown in Figure 1, the hub shaft (1), the hub body (2) and the hub body (2) and the hub body (2) is free to rotate on the hub shaft (1) It consists of a bearing (3) to support, a ball bearing (5) made of steel, and a driving device (A) installed on the hub body (2), which is a cylindrical intermediate body (7) and a cylindrical shape. A pair of steel balls for freely supporting the drive member 8, at least one sprocket 9 mounted on the outer circumference of the drive member 8, and the drive member 8 to the intermediate body 7. 13, 14, and a pair of bearings 10 and 11, and a unidirectional rotary electric motor 12 interposed between the driving member 8 and the intermediate body 7. As shown in FIG.

The hub is one of the parts that play an important role in driving the bicycle.

Long periods of use of wheels can cause play in the hub and damage the bearings.

If the wheel is used for a long time in this state, a problem arises in that the hub needs to be replaced with a cylinder.

Therefore, inspection and maintenance should be carried out at least once a year.

However, disassembling and servicing the wheels is not easy.

Not only was there a lot of equipment needed, but the removal of bearings in the hub was too hard to give up.

Accordingly, the present invention has been made in view of the above, and the present invention has led to the development of a device for fixing and removing cylindrical bearings that can be effectively disassembled and repaired by inspecting the bicycle hub in a short time.

The fixing and removing device of the cylindrical bearing of the present invention,

A body having an opening in the front and a rear end having a closed end surface and having a hole for inserting a feed screw into the closed end surface; And

A transfer rod having a locking jaw and an inclined surface so as to be easily removed by passing between bearings installed in the bicycle hub at the tip of the transfer screw inserted into the hole; And

A feed screw screwed into the rear end of the feed rod; And

A bearing removal unit in which a plurality of cutouts and elastic pieces are formed such that the transfer rod is inserted and the front end thereof is caught by the catching jaw of the transfer rod and is opened by the inclined surface; And

A handle which is screwed into the rear end of the transfer screw so that the transfer rod can be easily moved forward or backward;

Consists of, the non-slip portion is formed in the handle, characterized in that the through-hole is formed so that the driver or other tools can be inserted.

In addition, it is characterized in that the bearing is installed in the bike hub fixed and removed by the pressing force of the elastic pieces formed of a plurality of by the forward and backward movement of the transfer rod.

The device for fixing and removing the cylindrical bearing of the present invention can effectively dismantle and repair the bicycle hub in a short time.

1 is a cross-sectional view of a conventional bicycle hub.
Figure 2 is a perspective view of the fixing and removing device of the cylindrical bearing according to the present invention.
Figure 3 is an exploded perspective view of the fixing and removing device of the cylindrical bearing according to the present invention.
4a and 4b is a view showing for explaining the operation of the fixing and removing device of the cylindrical bearing according to the present invention,
4A is a view showing a state before hub disassembly, and FIG. 4B is a view showing a state at disassembly.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description with reference to the accompanying drawings, the same reference numerals denote the same elements regardless of the reference numerals, and redundant description thereof will be omitted. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

As shown in FIG. 2, the fixing and removing device 1 of the present invention includes a body 100, a feed screw 300, a feed rod 200, a bearing remover 400, and a handle 500. It consists of.

The body 100 is preferably made of synthetic resin to reduce the overall weight.

In addition, the cylindrical shape, but the front is open and the rear forms a closed end surface.

At this time, the metal washer 110 having a hole in the center for the purpose of preventing wear and impact by the transfer screw 300 on the closed end surface side is fitted.

The transfer rod 200 is made of a metal material and is formed with a locking jaw 201 at the front end, the inclined surface 202 is formed long in the portion extending from the locking jaw, the long rod 203 at the rear end of the inclined surface Is extended.

At the rear end of the long rod, as shown in FIG. 4A, a screw hole 204 is formed so that the feed screw 300 is screwed.

In addition, the handle 500 is screwed to the rear end of the transfer screw (300).

The handle 500 is a female screw is formed at the front end so that the feed screw 300 is screwed, the slip end 501 is formed at the rear end to prevent the sliding. The non-slip unit 501 is knuckle processing, but can be processed in various forms as necessary.

In addition, the handle 500 has a through hole 502 to reduce the work force when disassembling the hub installed in the drive device to be inserted by turning a screwdriver or other tools, work efficiency by the dispersion of force To improve it.

In addition, the handle 500, that is, the long screw hole 503 in the axial direction was formed so that other mechanisms can be fitted if necessary. This made the tool available when needed.

Meanwhile, as illustrated in FIG. 2 or FIGS. 4A and 4B, a bearing removing device 400 is installed outside the transfer rod 200.

The bearing removing device 400 has a plurality of cutouts 411 and elastic pieces 412 so that the front end is caught by the catching jaw 201 of the transfer rod 200, and opened and soiled by the inclined surface 202. An integrally formed bearing removal bundle 410 is installed.

That is, as shown in Figure 3, the rear end bearing removal bundle 410 is formed, at least three elastic pieces 412 and the incision 411 at the tip of the bearing removal bundle 410 is At this time, one end of the cutout 411 is provided with a hole 413 to help the elastic force when the elastic piece 412 is opened and the cutout 411 does not open any more.

Accordingly, the fixing and removing device 1 of the cylindrical bearing configured as described above is first shown in FIG. 4A if the object to be disassembled in the state as shown in FIG. 3 or FIG. 4A is to be disassembled. When the feed rod 200 is pulled out in front and rotated in the direction of the arrow of FIG. 3B in a state where the bearing passes through the inside, the feed screw 300 is advanced.

Then, the bearing removing device 400 is advanced along the feed rod 200 by the movement of the feed screw 300, and the bearing is in close contact with the inside as shown in FIG. 4B.

For example, as the bearing removing device 400 moves forward, the incision 411 opens further as the elastic piece 412 rides over the inclined surface 202 of the transfer rod 200, and at a moment, the inside of the bearing is opened. It is tightly fixed.

The user then pulls the handle and the bearing is easily removed.

Although the present invention has been described with reference to the above-described preferred embodiments and the accompanying drawings, different embodiments may be constructed within the spirit and scope of the invention. Accordingly, the scope of the present invention is defined by the appended claims, and is not to be construed as limited to the specific embodiments described herein.

1: Fixing and removing device of cylindrical bearing
100: body 200: feed rod
300: feed screw 400: bearing removal device
410: bearing removal bundle 411: incision opening
412: elastic piece 500: handle

Claims

A body having an opening in the front and a rear end having a closed end surface and having a hole for inserting a feed screw into the closed end surface; And
A transfer rod having a locking jaw and an inclined surface so as to be easily removed by passing between bearings installed in the bicycle hub at the tip of the transfer screw inserted into the hole; And
A feed screw screwed into the rear end of the feed rod; And
A bearing removal device having a bearing removal bundle in which a plurality of incisions and elastic pieces are formed such that the transfer rod is inserted and the front end is caught by the locking jaw of the transfer rod and is opened by the inclined surface; And
A handle which is screwed into the rear end of the transfer screw so that the transfer rod can be easily moved forward or backward;
Fixing and removing device of the cylindrical bearing, characterized in that consisting of.

The method of claim 1,
An anti-slip part is formed on the handle, and the through-hole is formed to insert a driver or other tool, characterized in that the cylindrical bearing fixing and removal device.

An apparatus for fixing and removing a cylindrical bearing, characterized in that for fixing and removing a bearing installed in a drive hub by a pressing force of a plurality of elastic pieces formed by forward and backward movements of a transfer rod.