KR20190000324U - Bearing with joint fixing structure - Google Patents

Abstract

The present invention relates to a bearing having an engaging and fixing structure and includes a bearing inner ring having a center hole formed therein, a bearing outer ring spaced apart from the inner ring by a predetermined distance from the inner ring, An insert member fixedly coupled to an inner circumferential surface of the inner ring of the bearing and having a predetermined shape so as to be fixed and rotatable using a predetermined tool; There is provided a bearing having an engaging and fixing structure including an engaging portion formed of a connecting member which is connected and fixed to an object to be mounted through a coupling operation with the insert member by a tool.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bearing having a joint fixing structure,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing having an engaging and fixing structure, and more particularly to a bearing having an engaging and fixing structure capable of being directly connected to a member to be engaged.

Generally, a bearing is a mechanical element mounted between a rotating element and a non-rotating element to facilitate rotation of the rotating element.

The bearing is divided into a sliding bearing and a rolling bearing according to a state in which the bearing is in contact with the shaft. The sliding bearing is a structure directly abutting the shaft, whereas the rolling bearing is a structure supporting a rotating shaft by a rolling member such as a ball or a roller.

Here, the rolling bearing is a bearing in which a rolling member is inserted between the outer ring and the inner ring to make a rotational contact to reduce friction. Rolling bearings can be classified according to the shape of the rolling elements, the raceway wheel, the direction of the load, etc., and can be divided into more kinds according to various characteristics.

For reference, the rolling bearings use ball bearings, tapered roller bearings, and needle bearings depending on the shape of the rolling elements. Of these, the ball bearings rotate at a high speed Thereby effectively supporting the shaft.

The ball bearings are classified into deep groove ball bearings and angular ball bearings according to their structures. Here, the deep groove ball bearing is the most representative structure of rolling bearings, and has a structure in which a rolling body is provided in a groove of an arc formed in the inner ring and the outer ring. On the other hand, the angular ball bearing has a structure in which a raceway surface having a constant contact angle is formed on the inner ring and the outer ring, and a rolling body is provided therebetween, so that the driving shaft rotating at high speed can be smoothly supported.

On the other hand, Japanese Patent Application Laid-Open No. 10-2017-0070735 discloses an inner ring, an outer ring spaced radially outward from the inner ring, a rolling member provided to be relatively rotatable between the inner ring and the outer ring, A flange-integrated ball bearing comprising a flange and disposed between an output gear and a friction element of the transmission and rotatably supporting the output gear, wherein a circular arc-shaped cutout is formed in a convex shape toward the bearing axis A UD chamfer interfering portion for eliminating the interference of the UD chamfer is formed on the other side of the bearing shaft in the direction opposite to the cut-off portion with respect to the center of the bearing shaft, and the flange is provided with gear oil A circular oil groove penetrating in the axial direction is formed so as to flow out, The first oil hole is formed at a position at an angle of 90 degrees in the circumferential direction with respect to the eddy chamfer interfering portion, wherein the flange has a first grip hole, a second grip hole, and a third grip hole, The second gripper hole and the third gripper hole are sequentially positioned on the other side in the circumferential direction of the unshaded chamfer interfering portion, and the third gripper hole is located on the opposite side of the first gripper hole, Wherein the first holding hole is opposed to the first holding hole.

In addition, Japanese Patent Application Laid-Open No. 10-2017-0071191 discloses a heat-insulating cylindrical roller bearing having an inner ring in which rollers arranged at regular intervals in the retainer make rolling contact, and an outer ring coupled to the outside of the rollers coupled to the inner ring A color 101 in which the side surface of the roller 40 and the inner circumferential surface of the retainer 20 are in contact with each other is integrally formed on one side of the outer peripheral surface on which the roller 40 comes into rolling contact, An inner ring 10 in which an annular fixing groove 103 for fixing the stationary ring 30 is formed; A retainer (20) formed in a ring shape with a constant thickness and formed with roller insertion grooves at regular intervals on the circumference thereof; A fixing protrusion 300 inserted between the inner ring 10 and the retainer 20 and inserted into the fixing groove 103 formed in the inner ring 10 is formed and fixed to the inner ring 10 to fix the roller 40 Ring 30; A plurality of rollers 40 formed in a cylindrical shape and inserted into the roller insertion grooves 200 of the retainer 20 to make rolling contact with the outer peripheral surface 100 of the inner ring 10; An outer ring 50 formed with a roller groove 500 on which the roller 40 coupled to the retainer 20 is seated and coupled to the outside of the roller 40 coupled to the inner ring 10; And a housing (60) coupled to an outer circumferential surface (501) of the outer ring (50) to be in spherical contact with the inner circumferential surface of the bearing water.

As in the prior art documents and conventional bearings, the center of the inner ring of the bearing is generally perforated. The bolt is inserted through the hole and the bearing is installed at a desired position using a nut. At this time, to fix the bearing firmly, a tool for tightening the bolt and a tool for tightening the nut are necessary.

Therefore, in order to engage the bearing with the object to be installed, a connecting member such as a bolt and a nut and at least two tools for fixing and fastening them are required. The present invention proposes a method for minimizing the connection members and tools used to couple the bearing to the installation object.

(Document 1) Korean Patent Laid-Open Publication No. 10-2017-0070735 (June 27, 2017) (Document 2) Korean Patent Publication No. 10-2017-0071191 (June 27, 2017)

It is an object of the present invention to provide a bearing having an engaging and fixing structure capable of engaging a bearing with an object to be mounted with a minimum configuration.

Another object of the present invention is to provide a bearing having an engaging and fixing structure capable of engaging a bearing with an object to be mounted using a minimum number of tools.

The solution of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a bearing comprising: a bearing inner ring having a center hole; a bearing outer ring spaced apart from the inner ring by a predetermined distance outside the bearing; A bearing portion constituted by a bearing rolling body relatively rotating between the outer rings; And an insert member fixedly coupled to an inner circumferential surface of the bearing inner ring and having a predetermined shape so as to be fixed and rotatable by using a predetermined tool; and an insert member disposed on the insert member, opposed to the predetermined shape, And a coupling and fixing unit configured to be connected to and fixed to the object to be installed through a coupling operation with the coupling fixture.

In the present invention, it is preferable that the engaging and fixing portion is integrally coupled to the bearing inner ring.

And a gap member formed between the insert member and the connection member and having a height corresponding to the predetermined gap for spacing the bearing portion and the installation object by a predetermined distance.

In the present invention, it is preferable that the insert member, the connecting member, and the spacing member have an integral structure, a detached structure, or a mixed structure.

In the present invention, it is preferable that the predetermined shape formed on the upper surface of the insert member is a shape drawn into the insert member or drawn out.

In this aspect of the present invention, it is preferable that the grooves introduced into the insert member are formed below the reference line on which the bearings are disposed.

According to another aspect of the present invention for achieving the objects of the present invention and other features, there is provided a bearing having an engaging and fixing structure; And an object to be mounted with a bolt insertion hole having a threaded structure, wherein the predetermined tool is mounted on the predetermined shape of the insert member and the predetermined tool is rotated to fasten the connection member connected to the insert member to the bolt insertion port A bearing coupling fixation assembly is provided.

In the present invention, it is preferable that the connection member is limited in the insertion depth according to the height of the spacing member.

The bearing having the joint fixing structure according to the present invention provides the following effects.

The present invention has the effect that the bearing can be easily and quickly installed since it is possible to couple the bearing to the installation target with the minimum configuration.

This design has the effect of expanding the installation range of the bearings since it is possible to easily adjust the position where the bearings are installed.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned may be clearly understood by those skilled in the art from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded view for explaining a bearing having an engaging and fixing structure according to an embodiment of the present invention; Fig.
FIG. 2 is a cross-sectional view of a bearing having the engagement and fixing structure of FIG. 1 according to each embodiment; FIG.
FIG. 3 is an explanatory view illustrating a bearing coupling and fixing assembly to which a bearing having a coupling and fixing structure according to an embodiment of the present invention is applied. FIG.

The scope of the present invention should not be construed as being limited by the embodiments described herein, as the description of the present invention is merely an example for structural or functional explanation. That is, the embodiments are to be construed as being variously embodied and having various forms, so that the scope of the present invention should be understood to include equivalents capable of realizing technical ideas. Also, the purpose or effect of the present invention should not be construed as limiting the scope of the present invention, since it does not mean that a specific embodiment should include all such effects or merely include such effects.

Meanwhile, the meaning of the terms described in the present application should be understood as follows.

The terms "first "," second ", and the like are intended to distinguish one element from another, and the scope of the right should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

It is to be understood that the singular " include "or" have ", as used herein, is intended to encompass a plurality of expressions, unless the context clearly dictates otherwise, It is to be understood that the combination is intended to specify that it does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

In each step, the identification code (e.g., a, b, c, etc.) is used for convenience of explanation, the identification code does not describe the order of each step, Unless otherwise stated, it may occur differently from the stated order. That is, each step may occur in the same order as described, may be performed substantially concurrently, or may be performed in reverse order.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used predefined terms should be interpreted to be consistent with the meanings in the context of the related art and can not be interpreted as having ideal or overly formal meaning unless explicitly defined in the present application.

FIG. 1 is an exploded view for explaining a bearing having a joint fixing structure according to an embodiment of the present invention, and FIG. 2 is a sectional view according to each embodiment of the bearing having the joint fixing structure of FIG.

1 and 2, a bearing having a coupling and fixing structure according to the present invention includes a bearing inner ring 110 having a center hole, a bearing outer ring 120 spaced apart from the bearing inner ring 110 by a predetermined distance, And a bearing member (100) composed of a bearing rolling member (130) relatively rotating between the bearing inner ring (110) and the bearing outer ring (120); An insert member 210 fixedly coupled to an inner circumferential surface of the bearing inner ring 110 and having a predetermined shape so as to be fixed and rotatable using a predetermined tool, And a coupling member 220 which is connected to and fixed to the object to be mounted through the coupling operation of the insert member 210 by the predetermined tool.

The bearing inner ring 110, the bearing outer ring 120, and the bearing member 130 are formed of a single ball bearing structure. For reference, although the ball bearing structure is described herein as an example, the present invention is applicable to all types of bearings using a fixed shaft in addition to a ball bearing.

The present invention is characterized in that the joint fixing part 200 is integrally formed at the center of the bearing inner ring 110 of the bearing part 100 and fixedly coupled. In other words, the joint fixing portion 200 is fixedly coupled to the inner circumferential surface of the bearing inner ring 110, and includes an insert member 210, a connecting member 220, and a spacing member 230.

First, the insert member 210 is configured to fix and rotate the joint fixing portion 200 using a predetermined tool. The insert member 210 has a body fixedly coupled to an inner circumferential surface of the bearing inner ring 110. The insert member 210 has grooves L drawn in a predetermined shape so as to be fixed and rotatable on a top surface of a body exposed to the outside, . Here, the groove L has a hexagonal shape as an example, and may have various polygons or +, - shapes in addition to a hexagon.

In the case of the hexagonal groove L, it is possible to fix and rotate the insert member 210 by inserting a hexagonal insert tool or the like. Although the insert member 210 has been described as an example of being inserted into the inside of the body, the insert member 210 may have a shape drawn out to the outside of the body, and any shape capable of being fixed and rotated by using various tools is also possible .

Next, the connecting member 220 is configured to be connected to and fixed to an object to be installed, and has a bolt structure in which a thread S is formed on a surface opposite to the surface on which the groove L is formed. Thus, when a hexagonal insert tool is inserted into the insert member 210 and rotated in a clockwise direction, for example, the link member 220 rotates together with the insert member 210 in a clockwise direction. The coupling member 220 is fastened to the bolt insertion hole of the threaded structure provided on the installation subject through the coupling operation of the insert member 210 and the coupling member 220. As a result, It can be fixed at a position corresponding to the height secured in the second housing 230.

2 is formed between the insert member 210 and the connecting member 220 and is configured to separate the bearing portion 100 and the object to be mounted from the insert member 210 by a predetermined distance. Since the bearing outer ring 120 is to be smoothly rotated, it is preferable that the bearing part 100 and the object to be installed are spaced apart from each other by a predetermined distance. Therefore, it is preferable that the spacing member 230 for securing the predetermined spacing is formed at a height H corresponding to the predetermined spacing.

FIG. 2 shows three embodiments of the bearing having the coupling and fixing structure of FIG.

First, the (A) type is a structure in which the insert member 210, the connecting member 220, and the spacing member 230 are integrally formed. In the case of the (A) type, since the insert member 210, the connecting member 220, and the spacing member 230 are integrally formed, they are easy to manufacture and easy to separate and connect, and ensure high fixing force and durability after connection .

In the type (B), the connecting member 220 is separated, and the connecting member 220 and the spacing member 230 are screwed to each other. (B) type, it is possible to selectively fasten the connection members 220 having different lengths or thicknesses, and to fix them to the installation object. In other words, according to the type (B), it is possible to select the length or the thickness of the connecting member 220 according to the state of the insertion hole provided in the installation target, which can enlarge the use width of the bearing having the coupling and fixing structure it means.

In the case of the connecting member 220 having a different thickness, the portions directly connected to the spacing member 230 are formed to have the same size, and the portion directly connected to the mounting subject may be formed different in thickness.

Next, the type (C) is a structure in which the spacing member 230 is separated, and the insert member 210 and the spacing member 230 are screwed to each other. It is possible to adjust the interval between the bearing part 100 and the object to be installed by selectively fastening the spacing member 230 having a different height H in the case of the C type. The ability to adjust the height of the spacing member 230 means that the position of the bearing portion 100 can be adjusted. This means that the use of the bearing having the coupling and fixing structure can be widened as in the case of the type (B) it means.

For reference, a bearing having a joint fixing structure according to the present invention may have a structure in which (B) type and (C) type are mixed. In the case of the screw-type coupling structure, a direction in which the coupling fixture 200 is connected and fixed to the installation target and a direction in which the coupling fixture 200 is fixed to the installation object are shown in (B) and (C) Type connecting member 220 and the (C) -type spacing member 230 are set to be equal to each other. That is, assuming that the joint fixing part 200 is rotated in the clockwise direction to be coupled to the installation target, the (B) type connecting member 220 and the (C) type spacing member 230 are also rotated clockwise .

FIG. 3 is an operation diagram illustrating a bearing coupling and fixing assembly to which a bearing having a coupling and fixing structure according to an embodiment of the present invention is applied.

Referring to FIG. 3, the bearing coupling and fixing assembly includes a bearing 300 having the coupling and fixing structure described with reference to FIGS. 1 and 2; And a mounting object (400) provided with a threaded bolt insertion port (B), wherein the predetermined tool (T) is mounted on the predetermined shape (H) of the insert member (210) And the connecting member 220 connected to the insert member 210 is fastened to the bolt insertion port B by rotating the bolt insertion hole.

The predetermined shape H has a hexagonal shape and the predetermined tool T corresponds to the hexagonal insert tool T corresponding thereto and the insert member 210 and the connecting member 220 are arranged clockwise, And the connecting member 220 is fastened to the bolt insertion port B of the threaded structure by way of example.

As shown in the drawing, the operator can fasten the bearing 300 having the joint fixing structure to the installation object 400 using only one hexagonal insert inserting tool T.

Further, the depth of insertion of the connecting member 220 is limited according to the height H of the spacing member 230. This means that it is possible to set the position where the bearing part 100 is disposed, and through this, the smooth rotation operation of the bearing part 100 can be assured.

In the bearing having the joint fixing structure according to the embodiment of the present invention, the insert member 210 and the connecting member 220 are integrally coupled to the bearing portion 100, and the bearing coupling and fixing assembly using the same has a minimum number of tools So that the bearing part 100 and the installation object 400 can be fixedly coupled.

In addition, since the insert member 210 and the connecting member 220 can be selectively fastened, the distance between the mounting object 400 and the bearing portion 100 can be easily adjusted, It can expand the installation range of bearings.

Meanwhile, as shown in the drawing, the groove L formed in the insert member 210 is formed at the same position as the bearing portion 100 with reference to a horizontal line (hereinafter, referred to as a reference line) in the drawing. That is, since the bearing part 100 and the insert member 210 are formed on substantially the same baseline, the groove L formed in the insert member 210 is formed to correspond to the reference line on which the bearing part 100 is disposed. However, the insert member 210 according to the present invention may be formed below the reference line on which the bearing portion 100 is disposed, and the groove L formed in the insert member 210 may also include the bearing portion 100 It can be formed below the reference line.

The fact that the groove L can be formed below the reference line on which the bearing part 100 is disposed means that the unnecessary members do not protrude above the reference line on which the bearing part 100 is disposed, It means that the installation area of the bearing can be minimized when the bearing having the joint fixing structure according to the example is installed on the installation target.

The embodiments and the accompanying drawings described in the present specification are merely illustrative of some of the technical ideas included in the present invention. Therefore, it is apparent that the embodiments disclosed in the present specification are not intended to limit the technical idea of the present invention but to illustrate it, and the scope of the technical idea of the present invention is not limited by these embodiments. It should be understood that variations and specific embodiments which can readily be devised by those skilled in the art within the scope of the technical idea included in the specification and drawings of the present invention are included in the scope of the present invention.

100: Bearing 110: Bearing inner ring
120: Bearing outer ring 130: Bearing rolling body
200: joint fixing part 210: insert member
220: connecting member 230: spacing member
L: groove S: thread

Claims (8)

A bearing unit comprising a bearing inner ring whose center is perforated, a bearing outer ring spaced apart from the inner ring by a predetermined distance from the inner ring, and a bearing rolling member which relatively rotates between the bearing inner ring and the bearing outer ring; And
An insert member fixedly coupled to an inner circumferential surface of the inner ring of the bearing and having a predetermined shape so as to be fixed and rotatable using a predetermined tool and an insert member fixedly coupled to the insert member opposed to the predetermined shape, And a connection member which is connected to and fixed to the object to be installed
Bearings with joint locking structure.
The method according to claim 1,
And the coupling and fixing portion is integrally coupled to the bearing inner ring.
Bearings with joint locking structure.
The method according to claim 1,
Further comprising a spacing member formed between the insert member and the connecting member and having a height corresponding to the predetermined distance for spacing the bearing portion and the mounting object by a predetermined distance
Bearings with joint locking structure.
The method of claim 3,
Wherein the insert member, the connecting member, and the spacing member have an integral structure or a detached structure or a mixed structure.
Bearings with joint locking structure.
The method according to claim 1,
Wherein the predetermined shape formed on the upper surface of the insert member is a shape drawn in or drawn out of the insert member.
Bearings with joint fixing structure
6. The method of claim 5,
And grooves that are drawn into the insert member are formed below the reference line on which the bearings are disposed
Bearings with joint locking structure.
A bearing having an engaging and fixing structure according to any one of claims 3 to 6. And
And an installation object provided with a bolt insertion hole having a threaded structure,
The predetermined tool is mounted on the predetermined shape of the insert member and the predetermined tool is rotated to fasten the connecting member connected to the insert member to the bolt insertion port
Bearing combined fixed assembly.
8. The method of claim 7,
Characterized in that the connecting member is limited in its insertion depth according to the height of the spacing member
Bearing combined fixed assembly.

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