KR20120110071A - Bearings having elastic rings - Google Patents

Abstract

PURPOSE: An elastic ring bearing is provided to insert an elastic ring flexibly operated into the inside of a bearing and joins the same, thereby distributing loads actuating on the bearing with simple configuration when the bearing rotates. CONSTITUTION: An elastic ring bearing comprises inner wheels(110a,110b), outer wheels(120a,120b), and a connector(130). The connector is inserted into between the inner and outer wheels. An inner wheel elastic ring is installed in between the inner and outer wheels. The inner wheels are separated into first and second inner wheels and the inner wheel elastic ring is installed in between the first and second inner wheels.

Description

Elastic Ring Bearings {Bearings having elastic rings}

The present invention relates to an elastic ring bearing, and more particularly, by inserting and coupling an elastic ring to a bearing used in various industrial equipments or automobiles to distribute the load applied to the bearing during rotation, thereby reducing noise and vibration during driving. The present invention relates to an elastic ring bearing that can be used to improve durability.

In general, the bearing refers to a mechanical element that serves to rotate the shaft while fixing the shaft of the rotating machine at a fixed position and supporting the weight of the shaft and the load applied to the shaft. It is widely used.

These bearings are classified into rolling bearing, plain bearing, fluid bearing, magnetic bearing, sleeve bearing, etc., depending on their structural characteristics. Rolling bearings are mainly used in high speed rotation due to low friction because steel balls or rollers are in contact with rolling.

That is, the rolling bearing has the advantage that heat resistance and durability is stronger than other bearings because the bearing is in contact with the ball or roller of the shaft and the ball or roller rotates together when the shaft rotates. However, there was a problem in that the driving noise is large and the ability to attenuate vibration falls.

As a conventional technology for solving this problem, Korean Patent Publication No. 10-2007-0035034 discloses a bearing vibration damping mechanism, the main technical configuration of which is shown in Figure 1, the bearing, and the bearing A housing 15 having a containment hole having a diameter larger than the diameter of the outer circumference, and a thin plate 17 having a plurality of slits 21 inserted therein so as to prevent the bearing from axially exiting the containment hole. And a ring damping mechanism formed in the outer periphery of the bearing so as to be radially movable, and the thin plate 17 being disposed in the annular gap so as to follow the circumferential direction. The part 21 is an elastic beam 22, which is characterized in that the bearing is elastically supported to attenuate vibration by contacting the bearing.

However, the prior art as described above is basically complicated in configuration and takes a lot of manufacturing cost and time, and because it is to install a separate vibration damping means on the outside of the bearing, the effect is insignificant, load distribution effect inside the bearing There was a problem that can not be expected.

The present invention has been made to solve the above problems, an object of the present invention is to insert the elastic ring that is fluidly operated in the inside of the bearing by coupling the elastic ring bearing to distribute the load acting on the bearing during rotation In providing.

In addition, the present invention has another object to provide an elastic ring bearing that can reduce the noise generated when driving by distributing the load acting on the bearing, damping the vibration as well as reducing the wear of the rolling element.

In addition, another object of the present invention is to provide an elastic ring bearing that can be applied to various fields by distributing a larger load by arranging a plurality of outer rings, inner rings and elastic rings in parallel.

According to an aspect of the present invention,

In a bearing comprising an inner ring, an outer ring and a rolling element inserted between an inner ring and an outer ring, an inner ring elastic ring is provided between the inner ring and the rolling element.

At this time, the inner ring is configured to be separated into the first inner ring and the second inner ring, the inner ring elastic ring is characterized in that installed between the first and second inner ring.

On the other hand, another embodiment of the elastic ring bearing according to the present invention,

In a bearing comprising an inner ring, an outer ring, and a rolling element inserted between an inner ring and an outer ring, a plurality of inner rings, outer rings, and rolling elements are connected and installed in parallel, and an inner ring elasticity is formed between the inner ring and the rolling element. It is characterized in that the ring is coupled.

In addition, in a bearing including an inner ring, an outer ring, and a rolling element inserted between an inner ring and an outer ring, a plurality of inner rings, outer rings, and rolling elements are connected and installed in parallel, and between the outer ring and the rolling element. The outer ring elastic ring is characterized in that it is coupled.

According to the present invention, by inserting the elastic ring that is fluidly actuated inside the bearing has an excellent effect to be able to distribute the load acting on the bearing during rotation by a simple configuration.

In addition, according to the present invention it is possible to reduce the noise generated when driving by the distribution of the load acting on the bearing, and to reduce the vibration as well as to reduce the wear of the rolling elements to further improve the durability of the bearing Have

1 is a plan view showing a conventional bearing vibration damping mechanism.
Figure 2 is a plan view conceptually showing an elastic ring bearing according to the present invention.
Figure 3 is a side cross-sectional view showing an elastic ring bearing according to the present invention.
Figure 4 is an exploded perspective view of the elastic ring bearing according to the present invention.
5 and 6 (a), (b) is a view showing the test results for the load distribution of the elastic ring bearing and the conventional bearing according to the present invention.
7 is a perspective view showing another embodiment of the elastic ring bearing according to the present invention.
8 is a side view of the present invention shown in FIG.
9 is a side cross-sectional view of the present invention shown in FIG.
10 is an exploded perspective view of the present invention shown in FIG.
11 is a view showing in detail the inner ring and the inner ring elastic ring of the present invention shown in FIG.
12 is a view showing in detail the outer ring and the outer ring elastic ring of the present invention shown in FIG.
13 is a view showing in detail the support member and the second departure preventing cap of the present invention shown in FIG.

Hereinafter, preferred embodiments of the elastic ring bearing according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a plan view conceptually showing an elastic ring bearing according to the present invention, Figure 3 is a side cross-sectional view showing an elastic ring bearing according to the present invention, Figure 4 is an exploded perspective view of the elastic ring bearing according to the present invention, Figure 5 And (a) and (b) of FIG. 6 show test results of the load distribution of the elastic ring bearing and the conventional bearing according to the present invention, and FIG. 7 illustrates another embodiment of the elastic ring bearing according to the present invention. FIG. 8 is a side view of the present invention shown in FIG. 7, FIG. 9 is a side cross-sectional view of the present invention shown in FIG. 7, FIG. 10 is an exploded perspective view of the present invention shown in FIG. 7, and FIG. 11 is FIG. 10. In the present invention shown in Figures showing the inner ring and the inner ring elastic ring in detail, Figure 12 is a view showing in detail the outer ring and outer ring elastic ring of the present invention shown in Figure 10, Figure 13 is a support of the present invention shown in Figure 10 Absence and Figure 2 shows the detail of the second departure prevention cap.

The present invention relates to an elastic ring bearing 100 to reduce the noise and vibration during driving and to improve durability by inserting and coupling the elastic ring to the bearing which is a mechanical element to distribute the load acting on the bearing during rotation. The structure is largely comprised of the inner ring 110, the outer ring 120, the rolling element 130 and the outer ring elastic ring 140.

In more detail, the present invention is a general bearing comprising an inner ring 110, outer ring 120 and a rolling element 130 made of a ball or roller installed between the inner ring 110 and the outer ring 120 In the structure, characterized in that the outer ring elastic ring 140 made of an elastic material inserted between the rolling element 130 and the outer ring 120, the outer ring elastic ring 140 is subjected to a load By causing the deformation to increase the contact area between the rolling element 130 and the inner ring 110 serves to distribute the load.

That is, as will be described later, the outer ring elastic ring 140 is deformed by the load generated when the bearing 100 is driven to press the rolling element 130, and the rolling element 130 and the inner ring ( The contact area between the 110 is increased to distribute the load and to reduce vibration and noise.

3 and 4, the outer ring 120 is divided into first and second outer rings 120a and 120b, and the outer ring is disposed between the first and second outer rings 120a and 120b. An elastic ring 140 is inserted and installed, and the space between the first and second outer ring 120a and 120b and the outer ring elastic ring 140 allows the outer ring elastic ring 140 to be deformed by a load. 160 is formed.

As shown in FIG. 3, the space portion 160 has an upper surface of the outer ring elastic ring 140 so that the outer ring elastic ring 140 may be deformed to a load acting in all directions including the vertical and horizontal directions. It is formed for all directions.

In more detail, the coupling grooves 122a and 122b are formed in the first and second outer rings 120a and 120b, respectively, so that the outer ring elastic ring 140 is inserted into the coupling grooves 122a and 122b. Is configured to be, one side of the coupling grooves (122a, 122b), that is, the separation prevention jaw (124a, 124b) is formed in the inner side of the coupling groove (122a, 122b) protruding and inserted into the coupling groove (122a, 122b) The outer ring elastic ring 140 is configured to prevent the departure.

At this time, although not shown, by forming a stepped portion on the outer circumferential surface of the outer ring elastic ring 140, the outer ring elastic ring 140 may be configured to be more stably inserted into the coupling grooves (122a, 122b). In addition, the inner ring of the outer ring elastic ring 140 forms a settling groove (not shown) in which the rolling element 130 is settled so that the outer ring elastic ring 140 and the rolling element 130 are in close contact with each other. Of course, the deformation of the outer ring elastic ring 140 may be configured to be better transmitted to the rolling element 130.

In addition, first and second bosses 126a and 126b protrude from outer edges of the first and second outer rings 120a and 120b to prevent the outer ring elastic ring 140 from being separated. A plurality of fixing holes 127a are formed in the one boss portion 126a, and a hook portion 127b is formed in the second boss portion 126b corresponding to the position where the fixing holes 127a are formed. The first outer ring 120a and the second outer ring 120b are coupled to each other by fitting 127b into the inside of the fixing hole 127a.

In addition, a first fastening means 170 may be used to more firmly fasten the first outer ring 120a and the second outer ring 120b. The first fastening means 170 may include a fastening pin or a bolt-nut. Structures and the like can be used.

That is, a through hole 128b penetrating through the second boss portion 126b and the hook portion 127b is formed in a portion where the hook portion 127b of the second outer ring 120b is formed, and the through hole 128b is formed. The first fastening means 170 is inserted through the first fastening means 170 to be fastened in the fixing hole 127a formed in the first boss portion 126a of the first outer ring 120a and the first outer ring 120a and the second outer ring. 120b is to be more firmly combined.

On the other hand, the fixing hole 127a is formed in a stepwise manner so that the diameter thereof becomes larger as it enters from the inlet portion into which the hook portion 127b is inserted, so that the hook portion 127b fitted to the fixing hole 127a is more. It is configured to be firmly fixed.

In more detail, as described above, when the fixing hole 127a is formed in a stepped manner in which the diameter becomes larger as it enters the inside, the hook portion 127b of the second outer ring 120b is fitted into the fixing hole 127a. When the first fastening means 170 is inserted into the hook portion 127b through the through hole 128b in the state, the first fastening means 170 is opened while opening the hook portion 127b to the outside. Thus, the front end portion of the hook portion 127b is engaged by the inside of the fixing hole 127a formed in a stepped manner so that the first outer ring 120a and the second outer ring 120b can maintain a firm fastening state.

Meanwhile, according to another embodiment of the elastic ring bearing 100 according to the present invention, an inner ring elastic ring 150 made of an elastic material may be inserted between the inner ring 110 and the rolling element 130. The inner ring elastic ring 150 distributes the load by increasing the contact area between the rolling element 130 and the outer ring 120 when the load is applied from the outside like the outer ring elastic ring 140 described above. To do.

In this case, as shown in FIG. 4, the inner ring 110 is also divided into a first inner ring 110a and a second inner ring 110b, similarly to the outer ring 120, and the first and second inner rings 110a and 110b. An inner ring elastic ring 150 is installed between the inner ring elastic ring 150, and the inner ring elastic ring 150 may be deformed by a load even between the first and second inner ring 110a and 110b and the inner ring elastic ring 150. A space portion 160 ′ is formed to allow.

In addition, the detailed configuration of the first and second inner ring (110a, 110b), that is, the coupling groove (112a, 112b), the separation prevention (114a, 114b), the first and second boss portion (116a, 116b), fixed The hole 117a, the hook portion 117b, the through hole 118b, and the second fastening means 180 are first in view of the positional characteristics occupied by the first and second inner rings 110a and 110b in the bearing 100. And the same as the above-described first and second outer ring 120a and 120b except that the positions of the second boss portions 116a and 116b and the departure preventing jaws 114a and 114b are changed from each other. do.

In addition, although the outer ring elastic ring 140 and the inner ring elastic ring 150 have been described in different embodiments, as shown in FIGS. 2 to 4, the outer ring elastic ring 140 and the inner ring elastic ring 150 are simultaneously Of course, you can install and use.

On the other hand, Figures 5 and 6 (a), (b) is to test the load distribution when the load (50kg) from the outside by two-dimensional modeling the elastic ring bearing and the conventional bearing according to the present invention, respectively, As shown in (a) and (b) of FIG. 5, when the outer ring elastic ring 140 is provided between the outer ring 120 and the rolling element 130, the load distribution is widened, and the inner ring 110 is formed. Compared to the number of balls of the rolling element 130 in contact with 5), the conventional bearing shown in FIGS. 6 (a) and 6 (b) has a frontal contact with the inner ring 110 due to the distribution of the load at one point It was confirmed that the number of the fuselage 130 balls is one.

On the other hand, another embodiment of the present invention shown in Figures 7 to 13 is a vehicle, power generation by allowing a plurality of inner ring, outer ring, rolling element and elastic body in the above-described embodiment is connected in parallel to distribute a larger load It is characterized in that it can be installed and used in a large system that is heavily loaded with facilities.

That is, after the inner ring 210 of the bearing 200 and the outer ring 220 installed on the outside and a plurality of rolling elements 230 installed between the inner ring 210 and the outer ring 220 in parallel, That is, the upper and lower surfaces of the inner ring 210 face each other, and the upper and lower surfaces of the outer ring 220 face each other, and then the inner ring elastic ring 250 is disposed between the inner ring 210 and the rolling element 230. By installing or by installing the outer ring elastic ring 240 between the rolling element 230 and the outer ring 220 it is possible to distribute the load by the deformation of the inner ring and the outer ring elastic rings (250,240).

In this case, as in the above-described embodiment, both the inner ring elastic ring 250 and the outer ring elastic ring 240 may be installed.

In more detail, another embodiment of the elastic ring bearing 200 according to the present invention is largely support 270, inner ring 210, rolling element 230, inner ring elastic ring 250, outer ring elastic ring 240 It is configured to include an outer ring 220 and the fixing portion 280, the support portion 270 is to serve to support the inner ring 210 to be coupled to the outside so as not to be separated, the central axis 272 And, it comprises a first departure preventing cap 274 and the first fixing cap 276.

That is, the central shaft 272 is made of a hollow shape in order to be axially coupled to the mechanical element on which the elastic ring bearing 200 according to the present invention, the inner ring 210 is fitted to the outside To this end, a plurality of slits 272a are formed at both ends of the central axis 272.

At this time, the slit 272a serves to allow both ends of the central axis 272 to be narrowed by elasticity and then widened again, thereby fitting the inner ring 210 to the outside of the central axis 272. In this case, the width of the end of the central shaft 272 can be narrowed to easily fit the inner ring 210, and in the state where the inner ring 210 is fitted to the outside of the central shaft, the width is narrowed by the slit 272a. Both ends of the central shaft 272 are reopened by elasticity to support the inner surface of the inner ring 210 to maintain a more firmly coupled state.

Next, the first departure preventing cap 274 is coupled to both ends of the central shaft 272 serves to prevent the separation of the inner ring 210 and the inner ring elastic ring 250 fitted to the central shaft 272. In this case, the through hole 274a is formed in the center of the first separation preventing cap 274.

That is, when the first separation prevention cap 274 is coupled in a state where the widths of both ends of the central shaft 272 having a plurality of slits 272a are narrowed, both ends of the central shaft 272 are opened again by elasticity. The locking step 272b protruding outwardly is caught by the upper end of the through hole 274a, so that the first separation preventing cap 274 can maintain the state coupled to the central axis 272.

In addition, the first fixing cap 276 is positioned on the outer side of the first departure preventing cap 274 to be fitted to both ends of the central axis 276 to the first axis preventing cap 274 by the central axis 272 ) So that it can be fixed to

Next, an inner ring 210, a rolling element 230, and an outer ring 220 are sequentially fitted to the outer circumferential surface of the central shaft 272, and the outer ring coupled to the outer side of the inner ring 210 and the inner ring 210. As shown in FIG. 10, a plurality of the upper and lower surfaces thereof face each other and are connected in parallel. The rolling elements 230 formed of balls or rollers are disposed between the inner ring 210 and the outer ring 220. Coupled to position.

At this time, the inner ring elastic ring 250 made of an elastic material is inserted between the inner ring 210 so as to be positioned between the inner ring 210 and the rolling element 230, the inner ring elastic ring 250 is described above As in one embodiment, when the bearing 200 is subjected to a load causes a deformation to increase the contact area between the rolling element 230 and the outer ring 220 serves to distribute the load.

That is, the inner ring elastic ring 250 deforms and pressurizes the rolling member 230 by the load generated when the bearing 200 is driven, and between the rolling member 230 and the outer ring 220 by the pressing action. The contact area of is increased so that the load is distributed and at the same time, it is possible to reduce vibration and noise generated during rotation.

In addition, as shown in FIG. 11, the first stepped portion 212 is formed on the outer and lower surfaces of the inner ring 210, and the first coupling groove 252 is disposed on the upper and lower surfaces of the inner ring elastic ring 250. Is formed so that the first stepped portion 212 is fitted into the inner side of the first coupling groove 252 so that the inner ring elastic ring 250 is located between the inner ring 210 and the rolling element 230 It is configured to be installed more stably in between.

At this time, the load between the inner ring 210 and the inner ring elastic ring 250, that is, between the first stepped portion 212 of the inner ring 210 and the first coupling groove 252 of the inner ring elastic ring 250. The first space portion 260 is formed by the inner ring elastic ring 250 to cause deformation.

As shown in FIG. 9, the first space part 260 has an outer side of the inner ring 210 to allow the inner ring elastic ring 250 to deform with respect to a load acting in all directions including the vertical and horizontal directions. It is formed for all directions up, down, left and right.

In addition, the outer surface of the inner ring elastic ring 250 is formed with a first settled groove 254 in which the rolling element 230 is placed, the first settled groove 254 is the inner ring elastic ring 250 and the rolling element By increasing the contact area between the 230 to the inner ring elastic ring 250 due to the load from the outside to be better transmitted to the rolling element 230 serves to improve the distribution effect of the load. .

On the other hand, the outer ring elastic ring 240 is positioned between the outer ring 220 to be inserted between the rolling element 230 and the outer ring 220, the bearing 200, similar to the inner ring elastic ring 250 When this load is applied, deformation occurs to increase the contact area between the rolling element 230 and the inner ring 210 to distribute the load.

That is, the outer ring elastic ring 240 is deformed by the load generated when the bearing 200 is driven to press the rolling element 230, the rolling element 230 and the inner ring 210 by this pressing action. The contact area between them increases to distribute the load, and at the same time serves to reduce vibration and noise generated during rotation.

At this time, as shown in FIG. 12, the second stepped portion 222 is formed on the inside and the bottom of the outer ring 220, and the second stepped portion 222 is formed on the top and the bottom of the outer ring elastic ring 240. The second coupling groove 242 to be fitted is formed, the inner peripheral surface of the outer ring elastic ring 240 is formed with a second settle groove 244 in which the rolling element 230 is placed, the outer ring 220 and the outer ring elastic Between the ring 240, that is, between the second stepped portion 222 of the outer ring 220 and the second coupling groove 242 of the outer ring elastic ring 240, the outer ring elastic ring 240 by a load acting from the outside. The second space portion 260 ′ is formed to allow deformation.

Effects of the second stepped portion 222, the second coupling groove 242, the second settled groove 244, and the second space portion 260 ′ may be described in the aforementioned inner ring 210 and inner ring elastic ring 250. Since the first step portion 212 and the first coupling groove 252, the first settle groove 254 and the same effect as the operation of the first space portion 260 will not be described in detail.

Next, the fixing part 280 is coupled to the outside of the outer ring 220 serves to fix the outer ring 220 and the outer ring elastic ring 240 to maintain a state coupled to the central axis 272, It comprises a support member 282, the second separation prevention cap 284 and the second fixing cap (286).

In more detail, the support member 282 is formed in a ring shape to serve to support the outer ring 220 by being fitted to the outside of the outer ring 220, the second departure preventing cap 284 is a support member Fitted to both ends of the 282 is to serve to prevent the departure of the outer ring 220 and the outer ring elastic ring 240, the second fixing cap 286 is the outer side of the second departure preventing cap (284) Is coupled to the second release preventing cap 284 to serve to more firmly fixed to the support member 282.

That is, a plurality of slits 284a are formed in the second release preventing cap 284 so that when the second release preventing cap 284 is fitted to both sides of the support member 282, the second release preventing cap 284 When the support member 282 is applied by applying a force in the direction in which the slit 284a is formed in the fixed state, the second release preventing cap 284 in which the slit 284a is formed is opened to the outside by elasticity and the support member ( 282 is inserted into the second separation prevention cap (284).

In addition, as illustrated in FIG. 13, engaging grooves 282a are formed at both ends of the outer circumferential surface of the support member 282, and protrusions 284b are formed on the inner circumferential surface of the second release preventing cap 284 to support the support member 282. The protrusion 284b of the second release preventing cap 284 is fitted into the locking groove 282a of the support member 282 while the member 282 is inserted into the second release preventing cap 284. The support member 282 and the second separation prevention cap 284 may be maintained in a coupled state.

In addition, the second fixing cap 286 is installed on the outside of the second release preventing cap 284 so that the second release preventing cap 284 can be more firmly fixed to the outside of the support member 282. The second fixing cap (284) is formed on the outer end of the second fixing cap (286) by pressing the outer peripheral surface of the elastic pressing portion (286a) of the second release preventing cap (284) support member ( 282) can be more firmly fixed.

Therefore, according to the elastic ring bearing (100,200) according to the present invention, the contact area between the inner ring (110,210) or outer ring (120,220) and the rolling elements (130,230) due to the deformation of the elastic ring (140,150,240,250) under load from the outside It is possible to spread the load acting on the bearings 100 and 200 while widening, and at the same time, it is possible to reduce the noise generated when driving by distributing the load acting on the bearings 100 and 200, and to reduce vibrations as well as the rolling elements 130 and 230. By reducing the wear of the) to have a variety of advantages, such as to improve the durability of the bearing (100,200).

Although the above embodiments have been described with respect to the most preferred examples of the present invention, it is not limited to the above embodiments, and it will be apparent to those skilled in the art that various modifications are possible without departing from the technical spirit of the present invention.

The present invention relates to an elastic ring bearing, and more particularly, by inserting and coupling an elastic ring to a bearing used in various industrial equipments or automobiles to distribute the load applied to the bearing during rotation, thereby reducing noise and vibration during driving. The present invention relates to an elastic ring bearing that can be used to improve durability.

100: elastic ring bearing 110: inner ring
110a: first inner ring 110b: second inner ring
112a, 112b, 122a, 122b: coupling grooves 114a, 114b, 124a, 124b: separation prevention jaw
116a and 126a: first boss portion 117a and 127a: fixing hole
118a, 128a: through hole 120: outer ring
120a: first outer ring 120b: second outer ring
130: rolling element 140: outer ring elastic ring
150: inner ring elastic ring 160, 160 ': space part
170: first fastening means 180: second fastening means

Claims (4)

In a bearing comprising an inner ring, an outer ring and a rolling element inserted between an inner ring and an outer ring,
Elastic ring bearing, characterized in that the inner ring elastic ring is installed between the inner ring and the rolling element.
The method of claim 1,
The inner ring is divided into a first inner ring and a second inner ring, the inner ring elastic ring is an elastic ring bearing, characterized in that installed between the first and second inner ring.
In a bearing comprising an inner ring, an outer ring and a rolling element inserted between an inner ring and an outer ring,
The inner ring, the outer ring and the rolling element is a plurality of connected in parallel, the elastic ring bearing, characterized in that the inner ring elastic ring is coupled between the inner ring and the rolling element.
In a bearing comprising an inner ring, an outer ring and a rolling element inserted between an inner ring and an outer ring,
A plurality of the inner ring, outer ring and the rolling element is connected in parallel, the elastic ring bearing, characterized in that the outer ring elastic ring is coupled between the outer ring and the rolling element.

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