KR20130104407A - Tripod constant velocity joint - Google Patents

Tripod constant velocity joint Download PDF

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Publication number
KR20130104407A
KR20130104407A KR1020120025871A KR20120025871A KR20130104407A KR 20130104407 A KR20130104407 A KR 20130104407A KR 1020120025871 A KR1020120025871 A KR 1020120025871A KR 20120025871 A KR20120025871 A KR 20120025871A KR 20130104407 A KR20130104407 A KR 20130104407A
Authority
KR
South Korea
Prior art keywords
housing
stopper
boot
constant velocity
velocity joint
Prior art date
Application number
KR1020120025871A
Other languages
Korean (ko)
Inventor
노정수
권인규
이현일
박준성
김진욱
Original Assignee
한국델파이주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국델파이주식회사 filed Critical 한국델파이주식회사
Priority to KR1020120025871A priority Critical patent/KR20130104407A/en
Publication of KR20130104407A publication Critical patent/KR20130104407A/en

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Classifications

    • 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
    • F16D3/205—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 the pins extending radially outwardly from the coupling part
    • F16D3/2055—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 the pins extending radially outwardly from the coupling part having three pins, i.e. true 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
    • F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
    • F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
    • F16D3/845—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers allowing relative movement of joint parts due to the flexing of the cover
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/04—Bellows
    • F16J3/041—Non-metallic bellows
    • F16J3/042—Fastening details

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

It is a technical object of the present invention to provide a tripod constant velocity joint which can prevent the ball from leaving the housing while minimizing cost and process. To this end, the tripod constant velocity joint of the present invention includes a housing in which the actuation mechanism is embedded, a boot provided at the end of the housing, and a stopper provided between the boot and the end of the housing and protruding toward the inside of the end of the housing. do.

Description

Tripod constant velocity joint

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

In general, constant-velocity joints are used to transfer power to wheels mounted on a drive axle connected to a longitudinal decelerating device in a front wheel drive vehicle. 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 has an extension portion formed by forming the end portion of the housing a little longer, a mounting groove formed on the inner circumferential surface of the extension portion, and a ring-shaped retainer fitted to the mounting groove to prevent the ball from being separated from the housing. retainer). 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, in order to mount the retainer, the end of the housing needs to be long, and a separate mounting groove needs to be processed, thereby increasing the material cost and complicated manufacturing process. Furthermore, there is a staking process of plastically deforming the end of the housing as another way to prevent the ball from leaving the housing, which is not repairable in case of constant velocity joint failure.

The technical problem of the present invention is to provide a tripod constant velocity joint which can prevent the ball from leaving the housing while minimizing cost and process.

In order to achieve the above object, the tripod constant velocity joint according to an embodiment of the present invention, the tripod constant velocity joint, the housing in which the operating mechanism is built; A boot provided at an end of the housing; And a stopper provided between the boot and the end of the housing and protruding toward the inside of the end of the housing.

For example, the stopper may be integrally formed with the boot.

The boot may be made of chloroprene rubber (CR).

As another example, the stopper may have a bushing shape and may be provided separately from the boot.

The stopper may be fastened together when the housing and the boot are fastened by a clamp.

The boot may be made of a thermoplastic elastomer (TPE) material.

In addition, the tripod constant velocity joint according to the embodiment of the present invention may further include a reinforcing member provided in the stopper.

The reinforcing member may be processed while being inserted into the stopper.

The reinforcing member may be made of steel or plastic material.

The reinforcing member may have a disk or ring shape that surrounds an end of the housing.

In addition, the operating mechanism may include a ball, and a portion corresponding to the ball of the stopper may have a concave shape to be in surface contact with the ball.

As described above, the tripod constant velocity joint according to the embodiment of the present invention may have the following effects.

According to an embodiment of the present invention, since the stopper is integrally formed in the boot or the stopper is fastened together when the boot and the housing are fastened, it prevents the ball from leaving the housing while minimizing cost and process. Can be.

1 is a cross-sectional view showing a tripod constant velocity joint according to an embodiment of the present invention.
2 is a cross-sectional view showing main parts of a tripod constant velocity joint according to another exemplary embodiment of the present invention.
Figure 3 is a cross-sectional view showing a tripod constant velocity joint according to another embodiment of the present invention.
Figure 4 is a cross-sectional view of the main portion showing a tripod constant velocity joint according to another embodiment of the present invention.

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

1 is a cross-sectional view showing a tripod constant velocity joint according to an embodiment of the present invention.

The tripod constant velocity joint according to an embodiment of the present invention, as shown in FIG. 1, includes a housing 100, a boot 300, and a stopper 400.

The housing 100 includes a hollow portion 110, an open end 120, and a closed end 130, the hollow portion 110 having an operating mechanism 200, and an open end 120. The boot 300 is fastened by the clamp 30, and the driven shaft 20 is coupled to the closed end 130. Here, the actuating mechanism 200 includes a spider 210 on which the driving shaft 10 is coupled and a trunnion protrudes, and a needle bearing 230 on an outer circumferential surface of the trunnion 211. It may include a ring-shaped ball 220 (ball) provided through.

Boot 300 is fastened to the open end 120 of the housing 100 by the clamp 30, the lubricant such as grease (grease) contained in the hollow portion 110 of the housing 100 leaks to the outside To prevent In particular, the drive shaft 10 has a bellows shape so that the drive shaft 10 can be sufficiently extended even when the drive shaft 10 is bent with respect to the driven shaft 20. Furthermore, the boot 300 may be made of a thermoplastic elastomer (TPE) material having good durability, ductility, and environment-friendly thermoplastics.

The stopper 400 is provided between the boot 300 and the open end 120 of the housing 100 and has a shape protruding toward the inside of the open end 120 of the housing 100. In particular, the stopper 400 has a bushing shape and is provided as a separate member from the boot 300. Furthermore, the stopper 400 may be fastened together when the housing 100 and the boot 300 are fastened by the clamp 30. Therefore, the stopper 400 is also fastened between the boot 300 and the housing 100 together with only one assembling process in which the boot 300 and the housing 100 are fastened by the clamp 30. And process can be reduced.

In addition, the portion 410 of the stopper 400 corresponding to the ball 220 may have a concave shape to be in surface contact with the ball 220. Therefore, the contact area with the ball 220 is increased, so that the endurance life of the stopper 400 can be increased.

As the technical configuration as described above is provided, even if the driving shaft 10 and the driven shaft 20 are bent greatly to each other, the ball 220 falls out of the housing 100 (see the arrow and dotted line in FIG. 1) of the stopper 400. Can be prevented. In addition, as the stopper 400 is fastened together by only one assembly process of fastening the boot 300 to the housing 100, the cost and the process may be reduced as compared with the prior art.

Hereinafter, a tripod constant velocity joint according to another embodiment of the present invention will be described in detail with reference to FIG. 2.

2 is a cross-sectional view showing main parts of a tripod constant velocity joint according to another exemplary embodiment of the present invention.

Since the tripod constant velocity joint according to another embodiment of the present invention is the same as the above-described embodiment of the present invention except for the reinforcing member 2500, as shown in FIG. 2, the reinforcing member 2500 is described below. Explain only about. In addition, the same reference numerals are assigned to the same components as in the exemplary embodiment of the present invention.

The reinforcing member 2500 is provided to the stopper 400 to reinforce the stopper 400. Therefore, since the stopper 400 is reinforced by the reinforcing member 2500, the ball 220 may be more safely prevented from falling out of the housing 100.

In particular, the reinforcing member 2500 may be processed while being inserted into the stopper 400 through insert injection or the like.

In addition, the reinforcing member 2500 may be made of steel or plastic material which is relatively superior in strength to rubber.

In addition, the reinforcing member 2500 may have a disk or ring shape having a shape surrounding the end of the housing 100 with one piece to facilitate processing through insert injection or the like.

Hereinafter, a tripod constant velocity joint according to another embodiment of the present invention will be described in detail with reference to FIG. 3.

Figure 3 is a cross-sectional view showing a tripod constant velocity joint according to another embodiment of the present invention.

Since the tripod constant velocity joint according to another embodiment of the present invention is the same as the above-described embodiment of the present invention except for the boot 3300 and the stopper 3310, as shown in FIG. Only the boot 3300 and the stopper 3310 will be described. In addition, the same reference numerals are assigned to the same components as in the exemplary embodiment of the present invention.

The boot 3300 is fastened by the clamp 30 to the open end 120 of the housing 100, and a lubricant such as grease contained in the hollow part 110 of the housing 100 leaks to the outside. To prevent In particular, the drive shaft 10 has a bellows shape so that the drive shaft 10 can be sufficiently extended even when the drive shaft 10 is bent with respect to the driven shaft 20.

The stopper 3310 is provided integrally with the end of the boot 3300 (a portion corresponding to the open end 120 of the housing 100), and is provided on the inner side of the open end 120 of the housing 100. It has a shape protruding toward. In particular, when the boot 3300 is molded, the stopper 3310 may also be molded together with the boot 3300 to provide the boot 3300 and the stopper 3310 in an integrated state. For example, the boot 3300 and the stopper 3310 may be integrally formed with each other by blow molding or the like. Therefore, the stopper 3310 integrated with the boot 3300 is automatically fastened by only one assembling process in which the boot 3300 and the housing 100 are fastened by the clamp 30, thereby reducing the cost and the process. Can be.

In addition, the stopper 3310 and the boot 3300 integrally formed with each other may be made of chloroprene rubber (CR).

In addition, the portion 3311 corresponding to the ball 220 of the stopper 3310 may have a concave shape to be in surface contact with the ball 220. Therefore, the contact area with the ball 220 is increased, so that the endurance life of the stopper 3310 can be increased.

As the above technical configuration is provided, even if the driving shaft 10 and the driven shaft 20 are greatly bent from each other, the ball 220 falls out of the housing 100 (see arrow and dotted line in FIG. 3) of the stopper 3310. Can be prevented. In addition, the stopper 3310 integrally with the boot 3300 is automatically fastened by only one assembly process of fastening the boot 3300 to the housing 100, thereby reducing costs and processes compared to the prior art.

Hereinafter, a tripod constant velocity joint according to another embodiment of the present invention will be described in detail with reference to FIG. 4.

Figure 4 is a cross-sectional view of the main portion showing a tripod constant velocity joint according to another embodiment of the present invention.

Since the tripod constant velocity joint according to another embodiment of the present invention is the same as the embodiment of the present invention shown in FIG. 3 except for the reinforcing member 4500 as shown in FIG. Only the reinforcing member 4500 will be described. In addition, the same components as those of the embodiment of the present invention shown in FIG. 3 are given the same reference numerals.

The reinforcing member 4500 is to reinforce the stopper 3310 and is provided at a portion corresponding to the stopper 3310 of the boot 3300. Therefore, since the stopper 3310 is reinforced by the reinforcing member 4500, the ball 220 may be more safely prevented from falling out of the housing 100.

In particular, when the blow molding or the like is performed such that the reinforcing member 4500 and the stopper 3310 of the boot 3300 are provided as one component, the reinforcing member 4500 is inserted into the stopper 3310, that is, the planted state. It can be processed into.

In addition, the reinforcing member 4500 may be made of steel or plastic material which is relatively superior in strength to rubber.

In addition, the reinforcing member 4500 may have a disk or ring shape that surrounds the end of the housing 100 with one piece to facilitate processing.

As described above, the tripod constant velocity joint according to the embodiments of the present invention may have the following effects.

According to embodiments of the invention, the stopper (3310 of FIG. 3) is integrally formed in the boot (3300 of FIG. 3) or the stopper (400 of FIG. 1) is the boot (300 of FIG. 1) and the housing (of FIG. 1). Since 100 has a technical configuration that is fastened together when fastened, it is possible to prevent the ball from leaving the housing while minimizing cost and process.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of right.

100: housing 200: operating mechanism
220: ball 300, 3300: boot
400, 3310: stopper 2500, 4500: reinforcing member

Claims (11)

A housing in which an operating mechanism is incorporated;
A boot provided at an end of the housing; And
And a stopper provided between the boot and the end of the housing and protruding toward an inner side of the end of the housing. In claim 1,
The stopper is a tripod constant velocity joint formed integrally with the boot. 3. The method of claim 2,
The boot is a tripod constant velocity joint made of chloroprene rubber (CR). In claim 1,
The stopper has a bushing shape and is provided separately from the boot tripod constant velocity joint. 5. The method of claim 4,
And said stopper is fastened together when said housing and said boot are fastened by a clamp. 5. The method according to claim 4 or 5,
The boot is a tripod constant velocity joint made of a thermoplastic elastomer (TPE) material. In claim 1,
Tripod constant velocity joint further comprises a reinforcing member provided on the stopper. In claim 7,
The reinforcing member is a tripod constant velocity joint is processed in the state inserted into the stopper. 9. The method of claim 8,
The reinforcing member is a tripod constant velocity joint made of steel or plastic material. 9. The method of claim 8,
The reinforcing member is a tripod constant velocity joint having a disk or ring shape that is shaped to surround the end of the housing. In claim 1,
Wherein the actuating mechanism comprises a ball,
And a portion corresponding to the ball of the stopper has a concave shape to be in surface contact with the ball.
KR1020120025871A 2012-03-14 2012-03-14 Tripod constant velocity joint KR20130104407A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
KR1020120025871A KR20130104407A (en) 2012-03-14 2012-03-14 Tripod constant velocity joint

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KR20130104407A true KR20130104407A (en) 2013-09-25

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019054770A1 (en) * 2017-09-13 2019-03-21 이래에이엠에스 주식회사 Boot clamping structure for constant velocity joint
KR20220008240A (en) * 2020-07-13 2022-01-20 스티어링 솔루션즈 아이피 홀딩 코오포레이션 Co-molded cvj boot skirt for anti-slip performance
FR3127267A1 (en) * 2021-09-23 2023-03-24 Delmon Group Ball retention ring of a transmission joint

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019054770A1 (en) * 2017-09-13 2019-03-21 이래에이엠에스 주식회사 Boot clamping structure for constant velocity joint
KR101960940B1 (en) * 2017-09-13 2019-03-21 이래에이엠에스 주식회사 Boot clamping structure for constant velocity joint
US11193515B2 (en) 2017-09-13 2021-12-07 Erae Ams Co., Ltd. Boot clamping structure for constant velocity joint
KR20220008240A (en) * 2020-07-13 2022-01-20 스티어링 솔루션즈 아이피 홀딩 코오포레이션 Co-molded cvj boot skirt for anti-slip performance
FR3127267A1 (en) * 2021-09-23 2023-03-24 Delmon Group Ball retention ring of a transmission joint
EP4155567A1 (en) * 2021-09-23 2023-03-29 Delmon Group Ball retention ring of a ball type constant velocity joint provided with a sealing bellows

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