KR102127752B1 - A stopper ring of a constant velocity joint and the constant velocity joint comprising the stopper ring - Google Patents

Abstract

The present invention relates to a fixed ring for a constant velocity joint and a constant velocity joint including the same, and in particular, it is easy to separate and mount from the joint housing, and it is fixed for a constant velocity joint that can stably prevent the roller from being detached from the track groove. It relates to a ring and a constant velocity joint comprising the same.
The present invention for achieving this object, in the fixed ring for a constant velocity joint, the fixed ring; A plurality of first ring areas provided and spaced apart from each other; A second ring region provided between the first ring region and protruding from the first ring region by being positioned on a different plane than the first ring region; It provides a fixed ring for a constant velocity joint, characterized in that it includes a third ring region extending from the first ring region and including an opening between the cut wire and the cut wire.

Description

Fixed ring for constant velocity joints and constant velocity joints comprising same{ A stopper ring of a constant velocity joint and the constant velocity joint comprising the stopper ring}

The present invention relates to a fixed ring for a constant velocity joint and a constant velocity joint comprising the same, and in particular, it is easy to separate and mount from the joint housing, and fixed for a constant velocity joint that can stably prevent the roller from leaving the track groove. It relates to a ring and a constant velocity joint comprising the same.

In general, a tripod constant velocity joint (Tripod Constant Velocity Joint) is a joint housing integrally connected to a stub shaft (stub shaft), inserted into the inner track of the joint housing and spline coupled to the half shaft (half shaft) to transmit power It consists of a spider, three trunnions formed on the outer peripheral surface of the spider, and a roller assembly inserted into the trunnion to absorb the relative motion generated between the track and the trunnion of the joint housing.

When the stub shaft and the half shaft of the tripod constant speed joint are bent, relative motion occurs between the track, trunnion and roller assembly of the joint housing, and the frictional force generated by this relative motion generates axial force in the axial direction of the half shaft. The axial force has a maximum value of 3 times for each rotation of the constant speed joint.

The construction of such a tripod constant velocity joint is disclosed in Korean Patent Registration No. 10-0741308.

On the other hand, the roller assembly slides in the joint housing, guides the plunging movement between the stub shaft and the half shaft, and the plunging movement can cut the two shafts.

It is necessary to have a configuration that serves as a locking jaw to prevent the roller assembly from moving away from the joint housing, and a fixing ring that can be caught by the roller assembly near the opening of the joint housing serves as that.

The retaining ring is composed of a piano steel wire material, forms an approximately annular shape, and usually has a two-dimensional shape.

The fixing ring is fixed to the mounting groove provided near the joint housing opening.

Therefore, the position at which the roller assembly is applied to the fixing ring means the maximum plungable limit position of the joint, and the maximum cutting angle is possible at this position.

However, when the retaining ring is separated from the joint housing, a part of the wire is grasped and then pulled to remove the wire. In this case, a separate tool is used because the cut area is located in the mounting groove inside the joint housing. There was the inconvenience of having to work with it.

Even in the case of assembling the fixing ring to the joint housing, the entire fixing ring had to be fitted into the mounting groove in the form of a closed curve formed along the inner surface of the joint housing.

In addition, it was difficult to check whether it was properly assembled or fastened with the eyes, and there was a discomfort in that it had to be touched by hand and checked with touch.

The present invention has been prepared to solve this problem, and the present invention has an object to easily separate or assemble a joint housing and a retaining ring, and to easily check the assembled state with the naked eye.

The present invention for achieving this object, in the fixed ring for a constant velocity joint, the fixed ring; A plurality of first ring areas provided and spaced apart from each other; A second ring region provided between the first ring region and protruding from the first ring region by being positioned on a different plane than the first ring region; It provides a fixed ring for a constant velocity joint, characterized in that it includes a third ring region extending from the first ring region and including an opening between the cut wire and the cut wire.

The first ring region and the second ring region are connected by a connection portion, and the connection portion includes a first connection portion extending in a direction that is bent at an end portion of the first ring region, and a first connection portion is bent at an end portion of the first connection portion. It is characterized in that it comprises a second connecting portion that is bent in a direction different from the extending direction and extends to connect with the end of the second ring region.

The first connection portion extends in a direction intersecting with respect to the end of the first ring region, and the second connection portion extends in a direction intersecting with respect to the end of the first connection portion.

The second ring region may include a first wire portion, and a second wire portion extending bent at both ends of the first wire portion and connected to the connection portion.

The third ring region in which the opening is formed is characterized by being composed of two cutting wires which are symmetrical to each other.

In addition, the present invention is a joint housing; A spider movably disposed in the joint housing and having a trunnion; A plurality of roller assemblies rotatably supported by the trunnion; A fixing ring disposed adjacent to the opening of the joint housing and in contact with the roller assembly to prevent the roller assembly from leaving the joint housing, the fixing ring; A plurality of first ring areas provided and spaced apart from each other; A second ring region provided between the first ring region and positioned on a different plane than the first ring region to protrude from the first ring region; It provides a constant velocity joint, characterized in that it includes a third ring region extending from the first ring region, and includes an opening between the cut wire and the cut wire.

The joint housing includes a track groove through which the rollers of the roller assembly move, a boundary wall portion provided between the track grooves, and a mounting groove formed in the front portion of the boundary wall portion and fitted with a fixing ring to be fixed, wherein the second ring area is It is disposed in close contact with the inlet rim of the track groove, and the first ring region is arranged to be fitted in the mounting groove.

The first ring region and the second ring region are connected by a connection portion, and the connection portion includes a first connection portion extending in a direction that is bent at an end portion of the first ring region, and a first connection portion is bent at an end portion of the first connection portion. It includes a second connecting portion that is bent in a direction different from the extending direction and extends to be connected to the end of the second ring region, wherein the connecting portion is disposed on the side of the inlet edge of the track groove, and the spacing of each connecting portion is greater than the width of the track groove It is characterized in that it is formed narrow to prevent the roller from moving the track groove from being detached from the track groove.

The third ring region in which the opening is formed is composed of two cutting wires symmetrical to each other, and the two cutting wires are characterized in that they are disposed in close contact with the rim of the track groove.

According to the present invention having the above configuration, the first area constituting the fixing ring is inserted into the mounting groove, and the second area and the third area can be exposed to the outside in close contact with the joint housing inlet rim. The advantage of being able to assemble the retaining ring to the joint housing easily and quickly by pushing only the part into the mounting groove.

In addition, a third area composed of two cutting wires separated from each other with an opening therebetween is exposed to the outside of the joint housing, and when the retaining ring is separated from the joint housing, it is easily fixed by holding the end of the cutting wire and pulling it. The ring can be removed from the joint housing.

That is, in the prior art, such a cut end is coupled to a mounting groove in the joint housing, and its periphery is covered with grease, making it difficult to separate, but in the present invention, grease Since there is a cut wire part cut in the outer area, not the inner area of the joint housing covered with the furnace, there is an advantage that it can be easily and quickly separated without a separate separation tool.

In addition, there is an advantage that the assembly state between the fixing ring and the joint housing can be easily visually confirmed.

1 is an exploded perspective view of a constant velocity joint according to the present invention.
2 is a view viewed from various angles of the fixing ring according to the present invention.
3 is a perspective view showing a coupling and separation state between the fixing ring and the joint housing according to the present invention.
4 is an internal perspective perspective view of a constant velocity joint with a retaining ring according to the present invention.
5 is a front view of a constant velocity joint with a retaining ring according to the present invention.
6 is a side cross-sectional view of a constant velocity joint with a retaining ring according to the present invention.
7 is a side cross-sectional view showing a plunging state in a constant velocity joint with a retaining ring according to the present invention.

The present invention can be applied to various changes and can have various embodiments, and specific embodiments will be illustrated and described in the drawings.

However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms.

The terms are used only for the purpose of distinguishing one component from other components.

For example, the second component may be referred to as the first component without departing from the scope of the present invention, and similarly, the first component may also be referred to as the second component.

The term and/or includes a combination of a plurality of related described items or any one of a plurality of related described items.

When an element is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected or connected to the other component, but other components may exist in the middle. It should be.

On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle.

The terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "include" or "have" are intended to indicate the presence of features, numbers, steps, actions, components, parts or combinations thereof described in the specification, but one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings, but the same or corresponding components are assigned the same reference numbers regardless of reference numerals, and redundant descriptions thereof will be omitted.

1 is an exploded perspective view of a constant velocity joint in which the retaining ring of the present invention is employed.

The constant velocity joint (1) is connected to the main shaft (2) connected to the engine and the joint housing (10) on which the track (11) is formed on the inner surface, and is accommodated inside the joint housing (10) and the trunnion (21). It includes a spider 20 provided, and a roller assembly 30 rotatably inserted into the trunnion 21.

The roller assembly 30 includes an inner roller, a needle bearing surrounding the inner roller, an outer roller surrounding the needle bearing, and a retainer ring disposed on the upper and lower surfaces of the outer roller.

Three roller assemblies 30 are provided, and each roller assembly 30 is disposed in a track groove 11 formed in the joint housing 10.

The roller assembly 30 disposed on the track 11 can slide along the track groove 11 while rolling.

Three track grooves 11 are spaced apart from each other, and a boundary wall 13 is formed between each track groove 11.

The driven shaft 40 is coupled to the central hole 22 of the spider 20.

Therefore, when the main shaft 2 rotates, power is transmitted in the order of the outer roller, needle bearing, inner roller, trunnion, and spider of the roller assembly 30, and the driven shaft 40 rotates.

When the driven shaft 40 is cut with respect to the main shaft 2, the roller assembly 30 moves along the track groove 11 according to the cutting state, and accordingly, the main shaft 2 and the driven shaft ( 40) The total length is increased or decreased.

As such, as the roller assembly 30 moves, the power transmission distance (that is, the total length of the main shaft and the driven shaft) is adjusted is referred to as plunging.

In order for the driven shaft 40 to be maximally etched relative to the main shaft 2, the roller assembly 30 and the spider 20 must be located near the opening 12 of the joint housing 10.

In this case, the roller assembly 30 and the spider 20 should maintain their positions, but should be prevented from being detached from the joint housing 10. To this end, a fixing ring 100 is disposed inside the joint housing 10 to serve as a kind of locking jaw.

The fixing ring 100 is made of a piano steel wire material, but is not limited thereto.

In order to mount the fixing ring 100, the mounting groove 13a is formed on the inner surface of the opening 12 of the joint housing 10, and specifically, the mounting groove 13a is the front surface of the three boundary walls 13 It is formed on the part, and is not open toward the front, but is open toward the inner direction which is the center of rotation of the joint housing 10.

2(a) to 2(d) are views of the fixing ring 100 as viewed from various angles.

2 (a) to 2 (d), the fixing ring 100 includes a plurality of first ring regions 110, a plurality of second ring regions 120. 121, and an opening 131 It includes a third ring area (130, 131) consisting of two cutting wires (130) forming a.

It is preferable that the two cutting wires 130 are provided in a symmetrical form of left and right based on an imaginary vertical line passing through the center of the fixing ring.

As will be described later, the first ring region 110 is a portion inserted into and fixed to the mounting groove 13a provided in the boundary wall 13 of the joint housing 10, and the second ring regions 120 and 121 are track grooves 11 ) Is the part in close contact with the front rim 10a of the entrance.

In addition, the third ring regions 130 and 131 are also in close contact with the front surface of the inlet rim 10a of the track groove 11. Meanwhile, the first ring region 110 and the second ring regions 120 and 121 are connected by the connection parts 111 and 112, and the first ring region 110 and the third ring regions 130 and 131 are connected. ) Are also connected by the connecting parts 111 and 112.

The connecting portions 111 and 112 include a first connecting portion 111 extending in a bending direction at an end of the first ring region 110 and a first connecting portion 111 bent at an end of the first connecting portion 111 and extended. It includes a second connecting portion 112 that is bent in a direction different from the direction to be extended and connected to an end of the second wire portion 121 constituting the second ring regions 120 and 121.

Also, in the case of the connecting portions 111 and 112 connecting the first ring region 110 and the third ring regions 130 and 131, the first portions extending in a bending direction at the ends of the first ring region 110 are also provided. Two cuts constituting the third ring regions 130 and 131 by extending in a direction different from the direction in which the first connection part 111 is bent and extended at the ends of the connection part 111 and the first connection part 111. It includes an end portion of the wire 130 and the second connection portion 112.

The first connecting portion 111 extends forward from both ends of the wires constituting the first ring region 110, and the extending direction is a direction intersecting or orthogonal to the wires constituting the first ring region 110.

The second connection part 112 extends in a plane while extending in a crossing or orthogonal direction at the end of the first connection part 111, and the direction extending in the plane extends obliquely with respect to an imaginary vertical line passing through the center of the ring. It is preferred.

The distance between the connection parts 111 and 112 connected to one side of one of the second ring regions 120 and 121 and the connection parts 111 and 112 connected to the other side is equal to the width of one track groove 11 and one. It is formed narrower than the width of the roller assembly 30.

Therefore, when plunging occurs and the roller assembly 30 moves to the inlet of the joint housing 10, the roller assembly 30 is prevented from getting out of the joint housing 10 by being caught between the connecting parts 111 and 112.

Since the first ring region 110 and the second ring regions 120 and 121 are disposed on different planes, the second ring regions 120 and 121 protrude forward than the first ring region 110. It is preferably provided.

In addition, since the first ring region 110 and the third ring regions 130 and 131 are also disposed on different planes, the third ring regions 130 and 131 protrude ahead of the first ring region 110. Preferably, the second ring regions 120 and 121 and the third ring regions 130 and 131 are preferably placed on the same plane.

3, the first ring region 110 should be installed in the mounting groove 13a of the joint housing 10, and the second ring regions 120, 121 and the third ring region 130, Since the 131) must be in close contact with the front rim 10a of the joint housing 10, the mutually arranged planes are different.

As shown in FIG. 3, the positions of the respective extension parts 111 and 112 are arranged on both sides of the entrance of each track groove 111, and are also provided to be exposed on both sides of each mounting groove 13a. do.

In this state, since the first ring region 110 is inserted into the mounting groove 13a, it is located inside the joint housing 10, and the second ring regions 120 and 121 and the third ring region ( 130 and 131 are in close contact with the inlet rim 10a of the joint housing 10 and are exposed to the outside, so that they are located outside the joint housing 10.

When the first ring region 110 is correctly inserted and fixed in the mounting groove 13a, naturally, the second ring regions 120 and 121 and the third ring regions 130 and 131 are provided with an entrance border of the joint housing 10 ( 10a), the operator sees only that the second ring regions 120 and 121 and the third ring regions 130 and 131 are in close contact with the inlet rim 10a of the joint housing 10. It can be confirmed that 110 is correctly inserted into the mounting groove 13a.

That is, even if only the second ring regions 120 and 121 and the third ring regions 130 and 131 are in close contact with the inlet rim 10a of the joint housing 10, the fixing ring 100 has a joint housing 10. It can be confirmed that it is assembled assuredly.

And, each of the connecting portions (111,121) is disposed on both sides of the inlet of the track groove 111, and is also provided to be exposed on both sides of each mounting groove (13a), each connecting portion than the maximum outer diameter of the roller assembly (30) The gap between the (111,121) is formed narrow so that the roller assembly (30) can be caught between each connection (111,121).

On the other hand, the two cut-type cutting wires 130 constituting the third ring regions 130 and 131 are exposed in close contact with the inlet rim 10a of the joint housing 10. Therefore, when the operator easily pulls one of the cutting wires 130 and pulls it in the direction of the center point of the joint housing 10, the adjacent first ring region 110 is separated from the mounting groove 13a and separated and separated. The other first ring region 110 is sequentially separated from the mounting groove 13a by the force transmission of.

In the prior art, when the cut portion of the retaining ring was in the mounting groove in the joint housing, a separate removal tool had to be inserted into the joint housing to separate the cut portion of the ring from the mounting groove and pulled to separate it. The present invention is to quickly and easily without the need to use a separate removal tool, by placing the cut portion of the retaining ring (cut wire 130 on both sides of the opening 131 and the opening 131) outside the joint housing 10 The fixing ring 100 can be separated from the joint housing 10.

As shown in Figure 4, when the roller assembly 30 is located inside the joint housing 10, the roller assembly 30 may move forward and backward along the track groove 11.

And, the inlet portion of the joint housing 10 is blocked by the fixing ring 100, it is possible to prevent the roller assembly 30 from leaving the outside.

As shown in FIG. 5, the position of each connecting portion 111 and 121 protrudes more inward in the track groove 11 direction than the position of the end of the second wire 121 constituting the second ring regions 120 and 121. do.

Here, the protruding length corresponds to the length of the second extension portion 112, and the first extension portion 111 extends in the plunging direction of the roller assembly 30 and is disposed in an axial form, thereby providing the first extension portion 111 ) Is prevented from coming off because the roller assembly 30 is caught and touched. On the other hand, since the first extension 111 is provided in the form of an axis placed in the plunging direction, the second extension 112 extends in the bent direction and is connected to the second ring regions 120 and 121. , When the roller assembly 30 collides, the impact can be effectively cushioned, thereby increasing durability.

That is, if the part where the roller assembly 30 is caught is formed to be orthogonal to the moving direction of the roller assembly 30, it can be easily deformed or broken by a moment.

However, as in the present invention, the part where the roller assembly 30 is caught is a part (first extension 111) extending in the same direction as the moving direction of the roller assembly 30, and a part that is connected to the part. Since the two extensions 112 are bent in an orthogonal or intersecting direction with respect to the moving direction of the roller assembly 30, they are connected to the second wires 112 constituting the second extensions 120, 121, so a kind of frame Since the structure is configured, even if there is an impact with the roller assembly 30, the impact can be relieved.

As shown in FIG. 6, an inclined portion is formed at the front end of the boundary wall 13 that divides the track groove 11 and is provided to be extended outward toward the inlet portion of the joint housing 10.

Let us assume that the front inclined surface is referred to as the first inclined surface 13b and the rear inclined surface as the second inclined surface 13c based on the mounting groove 13a. The height of the rear wall of the mounting groove 13a is formed higher than the height of the front wall of the mounting groove 13a, because the mounting groove 13a is formed on the inclined surface.

In this structure, when the first ring region 110 of the fixing ring 100 is pushed in contact with the first inclined surface 13b, the first ring region 110 is gradually compressed and meets the mounting groove 13a to achieve elastic recovery force. It is extended by being inserted into the mounting groove 13a and fixed.

The first ring region 110 of the fixing ring 10 is inserted into the mounting groove 13a, and the direction in which the first ring region 110 is fitted is the outer circumferential direction of the joint housing 10, and the direction to be separated is The direction toward the central axis of rotation of the joint housing 10, and the front-rear direction of the mounting groove 13a is blocked by the front and rear walls of the mounting groove 13a.

Therefore, even if the fixing ring 100 blocks the roller assembly 30 and the roller assembly 30 is caught, since the first ring region 110 is blocked on the front wall of the mounting groove 13a, the fixing ring 100 ) Is prevented from being separated by the mounting groove 13a.

7(a), the roller assembly 30 is fixed to the roller assembly 30 by plunging as shown in FIG. 7(b) in a state where the roller assembly 30 is spaced apart from contact with the fixing ring. If it moves in the (100) direction, it moves up to the portion where the extension parts 111 and 112 of the fixing ring 100 are located, and can no longer move outwards, thereby preventing departure.

As described above, the present invention has been described with reference to embodiments shown in the drawings, but this is only for explaining the invention, and those skilled in the art to which the present invention pertains various modifications or equivalents from the detailed description of the invention It will be understood that one embodiment is possible.

Therefore, the true scope of the present invention should be determined by the technical spirit of the claims.

10: joint housing 10a: entrance rim
11: Track groove 13: Boundary wall
13a: mounting groove 30: roller assembly
100: fixed ring 110: first ring area
111: first connection 112: second connection
120: first wire 121: second wire
130: opening 131: cutting wire

Claims (9)

In the fixed ring for the constant velocity joint,
The fixing ring; A first ring area provided in a plurality and spaced apart from each other, and provided to be fitted into a mounting groove provided in the constant velocity joint housing;
The second ring region is provided between the first ring region and is located on a plane different from the plane in which the first ring region is located, so that it is formed to protrude from the first ring region and can be disposed at the entrance edge of the constant velocity joint housing. ;
It extends from the first ring region and is located on a plane different from the plane in which the first ring region is located, so that it is formed to protrude from the first ring region and can be disposed on the inlet rim of the constant velocity joint housing, while cutting wire and A third ring region including an opening between the cut wires,
The first ring region and the second ring region are connected by a connection unit,
The connection portion includes a first connection portion extending in a direction to bend at an end of the first ring region,
And a second connection portion which is bent and extended in a direction different from a direction in which the first connection portion is bent and extended at an end portion of the first connection portion and is connected to an end portion of the second ring region,
The first connecting portion extends in a direction intersecting or orthogonal to an end portion of the first ring region, and the extending direction is a direction intersecting or orthogonal to the wire constituting the first ring region,
The second connecting portion extends in a direction intersecting or orthogonal to the end portion of the first connecting portion, and the extending direction extends diagonally with respect to an imaginary vertical line passing through the center of the ring,
The first connection portion is provided so that the roller of the constant velocity joint can come into contact with it, and the second connection portion and the second ring region connected thereto act as a buffer when the roller assembly collides,
The gap of each connecting part is formed narrower than the width of the track groove formed in the joint housing to prevent the roller from moving the track groove from being detached from the track groove,
The second ring region includes a first wire portion, and a second wire portion extending bent at both ends of the first wire portion and connected to the connection portion,
The third ring region where the opening is formed is composed of two cutting wires that are symmetrical to each other,
The two cut wires constituting the third ring area are fixed ring for constant velocity joints, characterized in that provided so as to be exposed in close contact with the entrance edge of the joint housing. delete delete delete delete A joint housing;
A spider movably disposed in the joint housing and having a trunnion; A plurality of roller assemblies rotatably supported by the trunnion;
It is disposed adjacent to the opening of the joint housing and comprises a retaining ring that contacts the roller assembly and prevents the roller assembly from leaving the joint housing.
The fixing ring; A first ring area provided in a plurality and spaced apart from each other, and provided to be fitted into a mounting groove provided in the constant velocity joint housing;
The second ring region is provided between the first ring region and is located on a plane different from the plane in which the first ring region is located, so that it is formed to protrude from the first ring region and can be disposed at the entrance edge of the constant velocity joint housing. ;
It extends from the first ring region and is located on a plane different from the plane in which the first ring region is located, so that it is formed to protrude from the first ring region and can be disposed on the inlet rim of the constant velocity joint housing, while cutting wire and A third ring region including an opening between the cut wires,
The joint housing includes a track groove through which the rollers of the roller assembly move, a boundary wall portion provided between the track grooves, and a mounting groove formed in the front portion of the boundary wall portion and fitted with a fixing ring to be fixed,
The first ring region and the second ring region are connected by a connection unit,
The connection portion includes a first connection portion extending in a direction to bend at an end of the first ring region,
And a second connection portion which is bent and extended in a direction different from a direction in which the first connection portion is bent and extended at an end portion of the first connection portion and is connected to an end portion of the second ring region,
The first connecting portion extends in a direction intersecting or orthogonal to an end portion of the first ring region, and the extending direction is a direction intersecting or orthogonal to the wire constituting the first ring region,
The second connecting portion extends in a direction intersecting or orthogonal to the end portion of the first connecting portion, and the extending direction extends diagonally with respect to an imaginary vertical line passing through the center of the ring,
The first connection portion is provided so that the roller of the constant velocity joint can come into contact with it, and the second connection portion and the second ring region connected thereto act as a buffer when the roller assembly collides,
The gap of each connecting part is formed narrower than the width of the track groove formed in the joint housing to prevent the roller from moving the track groove from being detached from the track groove,
The third ring region in which the opening is formed is composed of two cutting wires symmetrical to each other,
The two cut wires constituting the third ring region are provided to be exposed in close contact with the inlet rim of the joint housing.







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