KR20140123354A - Tripod constant velocity joint and assembling method thereof - Google Patents

Tripod constant velocity joint and assembling method thereof Download PDF

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Publication number
KR20140123354A
KR20140123354A KR20130040626A KR20130040626A KR20140123354A KR 20140123354 A KR20140123354 A KR 20140123354A KR 20130040626 A KR20130040626 A KR 20130040626A KR 20130040626 A KR20130040626 A KR 20130040626A KR 20140123354 A KR20140123354 A KR 20140123354A
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KR
South Korea
Prior art keywords
retainer
mounting groove
housing
constant velocity
velocity joint
Prior art date
Application number
KR20130040626A
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Korean (ko)
Inventor
노정수
김진욱
Original Assignee
한국델파이주식회사
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Publication date
Application filed by 한국델파이주식회사 filed Critical 한국델파이주식회사
Priority to KR20130040626A priority Critical patent/KR20140123354A/en
Publication of KR20140123354A publication Critical patent/KR20140123354A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/28—Associations of cutting devices therewith
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/202—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Abstract

The technical objective of the present invention is to provide a tripod constant velocity joint capable of preventing an operating device from being separated from a housing while improving moldability and minimizing quality variations. For this, the tripod constant velocity joint of the present invention includes: the housing in which the operating device is mounted; a mounting groove which is formed on the inner peripheral surface of the housing; and a retainer which is inserted into the mounting groove and has a rectangular cross-section while preventing the separation of the operating device. The retainer is formed by being cut from a plate through press machining.

Description

A tripod constant velocity joint and a method of assembling the same,

The present invention relates to a constant velocity joint for an automotive drive shaft.

In general, a constant velocity joint is installed on the drive shaft connected to the longitudinal reduction device in the front wheel drive vehicle and used to transmit power to the wheel. At this time, the contact point between the driving shaft and the driven shaft is on the bisector of the intersecting angle, so that the power is transmitted at the constant speed.

The constant velocity joint includes a housing, an operating mechanism provided in the housing, and a boot connected to the housing and sealing the lubricant. In the case of a tripod constant velocity joint, the actuating mechanism generally comprises a spider on which three trunnions are protruded, a needle bearing on the outer circumferential surface of the trunnion, And a ring-shaped ball provided on the outer peripheral surface of the needle bearing.

In particular, the conventional tripod constant velocity joint disclosed in U.S. Patent No. 6,390,926 has an extension formed by a longer end of the housing, a mounting groove formed at one time on the inner circumferential surface of the extension, and a ball inserted into the mounting groove, Further comprising a ring-shaped retainer wound around a wire having a round cross-section to prevent it from being dislodged. Therefore, even if the drive shaft and the driven shaft are largely bent, the retainer blocks the phenomenon that the ball slips out of the housing.

However, such a retainer is manufactured by winding a round wire with a coiling process and molding the wire into a three-dimensional shape. This coiling process is a process in which a quality deviation is determined according to the set- There is a problem that it is large and low in moldability.

Further, since the ring-shaped retainer is entirely fitted in the mounting groove formed at one time, that is, the entire retainer is mounted inside the housing, the end portion of the housing is lengthened to increase the material cost.

1. US registered patent US 6,390,926 (registered on May 21, 2002)

The technical object of the present invention is to provide a tripod constant velocity joint and a method of assembling the same that can prevent the operating mechanism from being detached from the housing while having excellent moldability and minimizing the quality deviation.

It is another object of the present invention to provide a tripod constant velocity joint and a method of assembling the same that can prevent the operating mechanism from being released from the housing while minimizing the cost.

A further technical object of the present invention is to provide a tripod constant velocity joint and a method of assembling the same, which can facilitate assembly of a retainer.

To achieve the above object, a tripod constant velocity joint according to an embodiment of the present invention is a tripod constant velocity joint comprising: a housing having an operation mechanism; A mounting groove formed on an inner circumferential surface of the housing; And a retainer fitted in the mounting groove to prevent the detachment of the actuating mechanism and having a rectangular cross section, wherein the retainer is cut from the plate by press working.

The housing may have a shape recessed from three places to an inside thereof with an interval, and the mounting groove may be formed in at least one of the three locations.

The retainer may have first, second, and third depressions corresponding to the three locations, and at least one of the first, second, and third depressions may be fitted into the mounting recess.

The portion of the retainer excluding the first, second, and third depressions may be located outside the housing, and the first, second, and third depressions may have a shape recessed into the interior of the housing.

The retainer may have a loop shape in which a portion forming the third depression is cut open.

At least one of the three portions, at which the mounting groove is formed, may be miniaturized through a staking process in order to engage the retainer with the mounting groove.

In one example, the retainer may have an open loop shape in which a part thereof is cut open.

As another example, the retainers may be connected together to have a closed loop shape.

The retainer may have the same size of thickness and width.

The plate-like plate may be made of a carbon steel material.

The retainer may be made by tempering.

According to another aspect of the present invention, there is provided a method of assembling a tripod constant velocity joint, comprising: fitting the first depression into a mounting groove formed at a first location of the three locations; Fitting the second depression into a mounting groove formed at a second location of the three locations; And fitting the third depression into the mounting recess formed in the third portion of the three locations after the first and second depressions are fitted in the mounting recess.

According to another aspect of the present invention, there is provided a method of assembling a tripod constant velocity joint, comprising: fitting one end of the third depression into an attachment groove formed in a first one of the three depressions; Fitting the first depressed portion into a mounting groove formed at a second one of the three locations after the one end portion is inserted into the mounting groove; Fitting the second depression into a mounting groove formed at a third location of the three locations; And fitting the other end of the third depression into the mounting groove formed in the first location after the first and second depressions are fitted in the mounting groove.

As described above, the tripod constant velocity joint and the assembling method thereof according to the embodiment of the present invention can have the following effects.

According to the embodiment of the present invention, since the retainer has a rectangular cross section and is cut through press working, the moldability is excellent and the operation mechanism can be prevented from being detached from the housing while minimizing the quality deviation.

Further, according to the embodiment of the present invention, since the retainer has a structure in which the first, second and third depressed portions are located outside the housing, the retainer is mounted without extending the length of the housing. So that it is possible to prevent the operating mechanism from being disengaged from the housing while minimizing the material cost for the housing.

Further, according to the embodiment of the present invention, since the retainer has a technical configuration having an opened loop shape, the retainer can be easily assembled.

1 is a perspective view schematically illustrating a tripod constant velocity joint according to an embodiment of the present invention.
Fig. 2 is a view showing the separator of the tripod constant-velocity joint of Fig.
Fig. 3 is a view showing the tripod constant velocity joint of Fig. 1 with the operating mechanism removed. Fig.
Fig. 4 is a view of the triad constant velocity joint of Fig. 3 viewed in the direction of arrow "A ".
5 is a flowchart illustrating a method of assembling a tripod constant velocity joint according to an embodiment of the present invention.
6 is a flowchart illustrating a method of assembling a tripod constant velocity joint according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

FIG. 1 is a perspective view schematically showing a tripod constant velocity joint according to an embodiment of the present invention, FIG. 2 is a view showing the tripod constant velocity joint of FIG. 1 with a retainer alone removed, FIG. 3 is a cross- Fig. 3 is a drawing showing the operation of the constant velocity joint with the operating mechanism removed.

Fig. 4 is a view of the triad constant velocity joint of Fig. 3 viewed in the direction of arrow "A ".

A tripod constant velocity joint according to an embodiment of the present invention includes a housing, a mounting groove, and a retainer, as shown in Figs.

The housing 110 includes a hollow portion 110a, an open end portion 110b and a closed end portion. The hollow portion 110a is provided with an operating mechanism 10 and the opened end portion 110b is provided with a boot (Not shown), and a driven shaft (not shown) is coupled to the closed end. The operating mechanism 10 provided in the hollow portion 110a of the housing 110 includes a spider 11 on which trunnions are protruded and a spider 11 on the outer surface of the trunnion, And may include a ring-shaped ball 12 provided through a bearing (not shown). A drive shaft (not shown) is coupled to the spider 11.

Further, the housing 110 may be formed at three positions (111), (112), and (113) at an interval of about 120 degrees. The ball 12 described above is slidably provided between the recessed portions.

The mounting groove 120 is formed on the inner peripheral surface of the housing 110 as one of the components for preventing the operating mechanism 10 from falling out of the housing 110. Specifically, the mounting groove 120 is formed on the open end portion 110b side of the inner circumferential surface of the housing 110. [ 1 and 3 illustrate that the mounting grooves 120 are formed in the three portions 111, 112, and 113 of the housing 110, respectively. However, the mounting grooves 120 are not limited to the three portions 111, 111) 112, 113, and the like.

The retainer 130 is one of the components for preventing the operating mechanism 10 from falling out of the housing 110. The retainer 130 is fitted in the mounting groove 120 to substantially prevent the detachment of the operating mechanism 10. [ Particularly, the retainer 130 is cut from a plate (not shown) through a press working, and a rectangular cross section (see a part of FIG. . Therefore, since the retainer 130 has a rectangular cross-section and is cut at one time by press working, the conventional retainer 130 is formed by winding a wire having a circular cross section by coil winding several times to form a three- The moldability is excellent and the quality deviation can be minimized.

Illustratively, FIGS. 1 to 3 illustrate that the thickness and width of the rectangular cross-section of the retainer 130 have different sizes (see the enlarged portion of FIG. 2 and shown in cross-section) It is also possible for the rectangular cross section of the retainer 130 to have the same size in thickness and width. In one example, the rectangular cross-section of the retainer 130 may have a width of 1.0 to 3.5 mm and a thickness of 0.5 to 1.0 mm. Also, the plate-like plate may be made of carbon steel material of S50C to S75C, and when the cut is made by the retainer 130, the retainer 130 may be heat-treated through tempering at 250 to 700 ° C to reinforce the strength .

The retainer 130 thus constructed may have first, second and third depressions 131, 132 and 133 to correspond to the three portions 111, 112 and 113 of the housing 110 have. 1 and 3 illustrate the first, second and third depressions 131, 132 and 133 of the retainer 130 in the three positions 111, 112 and 113, respectively, The present invention is not limited thereto and at least one of the first, second and third depressions 131, 132 and 133 of the retainer 130 may be inserted into the mounting groove 120 120).

4, a portion of the retainer 130 excluding the first, second, and third depressions 131, 132, and 133 is located outside the housing 110, The second and third depressions 131, 132, and 133 may have a shape recessed into the interior of the housing 110. Therefore, the portion of the retainer 130 excluding the first, second, and third depressions 131, 132, and 133 is located outside the housing 110, so that the length of the housing 110 is hardly extended The material cost for the housing 110 can be minimized.

In addition, the retainer 130 may have a loop shape in which the third depression 133 is cut open. Therefore, the assembling of the retainer 130 can be facilitated, as can be seen from the method of assembling the tripod constant velocity joint of the present invention to be described later. Illustratively, although the retainer 130 is shown in Figures 1-3 as having an open loop shape, it is also possible for the retainer 130 to have a closed loop shape connected together.

Further, at least one of the three locations 111, 112 and 113 where the mounting groove 120 is formed is coupled to the mounting groove 120 by a small deformation . Therefore, the retainer 130 can be firmly engaged with the mounting groove 120 while the mounting groove 120 is plastically deformed.

Hereinafter, with reference to FIG. 5, a method of assembling a tripod constant velocity joint according to an embodiment of the present invention will be described in detail.

5 is a flowchart illustrating a method of assembling a tripod constant velocity joint according to an embodiment of the present invention.

First, the first depression 131 of the retainer 130 is inserted into the mounting groove 120 formed in the first portion 111 among the three portions of the housing 110 (S110).

When the first depressed portion 131 is fitted, the second depressed portion 132 of the retainer 130 is inserted into the mounting groove 120 formed in the second portion 112 of the three portions of the housing 110 (S120).

After the first and second depressions 131 and 132 are fitted, the third depressed portion 133, which is an incised portion of the retainer 130, is inserted into the mounting recess 120 formed in the third portion 113 (S130).

Therefore, since the portion of the retainer 130 that is finally fitted into the mounting groove 120 is the incised third depression 133, the degree of assembly is improved through the incised portion and assembly can be facilitated.

Hereinafter, with reference to FIG. 6, a method for assembling a tripod constant velocity joint according to another embodiment of the present invention will be described in detail.

6 is a flowchart illustrating a method of assembling a tripod constant velocity joint according to another embodiment of the present invention.

The one end 133a of the third depression 133 of the retainer 130 is inserted into the mounting groove 120 formed in the first portion 111 among the three portions of the housing 110 ).

The first indented portion 131 of the retainer 130 is inserted into the mounting groove 120 formed in the second portion 112 of the three portions of the housing 110 120 (S220).

The second depression 132 of the retainer 130 is then inserted into the mounting groove 120 formed in the third portion 113 of the housing 110 at step S230.

The other end 133b of the third depression 133 of the retainer 130 is inserted into the housing 120 after the first and second depressions 131 and 132 are fitted in the mounting groove 120 110 into the mounting groove 120 formed in the first portion 111 (S240).

Therefore, since the end portion 133b of the third depression 133, which is the end portion of the retainer 130 fitted to the mounting groove 120, is finally formed, the degree of assembly is improved through the cut portion, .

As described above, the tripod constant velocity joint and the assembling method thereof according to the embodiment of the present invention can have the following effects.

According to the embodiment of the present invention, since the retainer 130 has a rectangular cross-section and is cut through press working, the moldability is excellent and the operation mechanism is prevented from being detached from the housing while minimizing the quality deviation .

In addition, according to an embodiment of the present invention, a portion of the retainer 130 excluding the first, second, and third depressions 131, 132, and 133 is located outside the housing 110, Since the first and second and the third depressions 131, 132 and 133 have the shape of being recessed into the interior of the housing 110, the retainer (not shown) 130 can be mounted and operated to prevent the operating mechanism 10 from being disengaged from the housing 110 while minimizing the material cost for the housing 110. [

Further, according to the embodiment of the present invention, since the retainer 130 has a technical configuration having an opened loop shape, the retainer 130 can be easily assembled.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

10: actuating mechanism 110: housing
111: First spot 112: Second spot
113: third portion 120: mounting groove
130: retainer 131: first depression
132: second depression part 133: third depression part

Claims (13)

In a tripod constant velocity joint,
A housing in which an operating mechanism is incorporated;
A mounting groove formed on an inner circumferential surface of the housing; And
And a retainer fitted in the mounting groove to prevent the detachment of the actuating mechanism and having a rectangular cross section,
And the retainer is cut from the plate-like plate through press working. The method of claim 1,
The housing has a shape recessed from three places to the inside with a gap therebetween,
Wherein the mounting groove is formed in at least one of the three locations. 3. The method of claim 2,
The retainer has first, second, and third depressions corresponding to the three locations,
At least one of the first, second and third depressions being fitted in the mounting groove. 4. The method of claim 3,
Wherein a portion of the retainer excluding the first, second, and third depressions is located outside the housing, the first, second, and third depressions are formed by a triptoid constant velocity joint having a shape recessed into the interior of the housing . 5. The method of claim 4,
And the retainer has a loop shape in which a portion constituting the third depression is cut open. 3. The method of claim 2,
Wherein at least one of the three mounting recesses is formed by a staking process so as to engage the retainer with the mounting recess. The method of claim 1,
Wherein the retainer has a loop shape in which a part of the retainer is cut open. The method of claim 1,
And the retainer is connected to form a closed loop shape. 9. The method according to claim 7 or 8,
Wherein said retainer is of the same size in thickness and width. The method of claim 1,
Wherein the plate-like plate is made of a carbon steel material. 11. The method of claim 10,
Wherein said retainer is tempered. A method of assembling a tripod constant velocity joint of claim 5,
Fitting the first depressed portion into a mounting groove formed at a first one of the three locations;
Fitting the second depression into a mounting groove formed at a second location of the three locations; And
The step of fitting the third depression into the mounting recess formed in the third portion of the three positions after the first and second depressions are fitted in the mounting recess,
Of the triaxial constant velocity joint. A method of assembling a tripod constant velocity joint of claim 5,
Fitting one end of the third depression into an attachment groove formed in a first one of the three depressions;
Fitting the first depressed portion into a mounting groove formed at a second one of the three locations after the one end portion is inserted into the mounting groove;
Fitting the second depression into a mounting groove formed at a third location of the three locations; And
The step of fitting the other end of the third depression into the mounting groove formed in the first location after the first and second depressions are fitted in the mounting groove,
Of the triaxial constant velocity joint.
KR20130040626A 2013-04-12 2013-04-12 Tripod constant velocity joint and assembling method thereof KR20140123354A (en)

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KR20130040626A KR20140123354A (en) 2013-04-12 2013-04-12 Tripod constant velocity joint and assembling method thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190140223A (en) * 2018-06-11 2019-12-19 서한산업(주) A stopper ring of a constant velocity joint and the constant velocity joint comprising the stopper ring
KR102351375B1 (en) 2021-09-09 2022-01-13 임해수 Spider assembly manufacturing equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190140223A (en) * 2018-06-11 2019-12-19 서한산업(주) A stopper ring of a constant velocity joint and the constant velocity joint comprising the stopper ring
KR102351375B1 (en) 2021-09-09 2022-01-13 임해수 Spider assembly manufacturing equipment

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