KR20130077356A - Boot for tripod type constant velocity joint - Google Patents

Boot for tripod type constant velocity joint Download PDF

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Publication number
KR20130077356A
KR20130077356A KR1020110146020A KR20110146020A KR20130077356A KR 20130077356 A KR20130077356 A KR 20130077356A KR 1020110146020 A KR1020110146020 A KR 1020110146020A KR 20110146020 A KR20110146020 A KR 20110146020A KR 20130077356 A KR20130077356 A KR 20130077356A
Authority
KR
South Korea
Prior art keywords
constant velocity
boot
velocity joint
tripod type
type constant
Prior art date
Application number
KR1020110146020A
Other languages
Korean (ko)
Inventor
허종욱
Original Assignee
서한산업(주)
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 서한산업(주) filed Critical 서한산업(주)
Priority to KR1020110146020A priority Critical patent/KR20130077356A/en
Publication of KR20130077356A publication Critical patent/KR20130077356A/en

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    • 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

PURPOSE: A boot for a tripod type constant velocity joint is provided to reduce manufacturing costs by comprising a separation preventing protrusion in one unit and by connecting the separation preventing protrusion with a housing. CONSTITUTION: A boot (30) for a tripod type constant velocity joint is formed as a small cymbals shape which is folded in order to be expanded. The boot comprises a separation preventing protrusion (31) on an inner circumference around a connection part with a housing.

Description

Boot for tripod type constant velocity joint

The present invention relates to a boot for a tripod type constant velocity joint, and more specifically, to prevent the roller assembly from being detached from the housing, a drop prevention jaw is formed integrally with the boot to be combined with the housing to reduce the manufacturing cost. The present invention relates to a boot for a tripod type constant velocity joint.

Generally, a joint is for transmitting rotational power (torque) to a rotation shaft having different angles of rotation axis. In the case of a propulsion shaft having a small power transmission angle, a hook joint, a flexible joint, or the like is used. A constant velocity joint is used.

Since the constant velocity joint can transmit power smoothly at a constant speed even when the angle of intersection between the drive shaft and the driven shaft is large, it is mainly used for the axle shaft of the independent suspension type front wheel drive vehicle, and the engine side (inboard side) Type joint, and the tire side (outboard side) around the shaft is made of a ball type joint.

1 is a cross-sectional configuration diagram of a general constant velocity joint, FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1, and FIG. 3 is an external configuration diagram of a general constant velocity joint.

As shown in FIGS. 1 to 3, a general constant velocity joint configuration includes a tripod-type joint on an engine side (inboard side) around a shaft 1, and a wheel side (about a shaft 1). Outboard side) consists of a ball type joint.

The structure of the tripod type joint, which is installed on the engine side (inboard side) around the shaft 1, transmits the rotational power of the engine (not shown) and has a track groove formed therein. And a shaft 1 which is rotated by receiving the rotational power of the housing 2, and is connected to one end of the shaft 1 to connect the housing 2 and the shaft 1 to the housing 2. Spider 3 is installed inside the three trunnions (3a) is inserted into the track groove, the inner roller (6) is installed on the outer peripheral surface of the trunnion (3a) of the spider (3), A needle roller 5 installed on an outer circumferential surface of the inner roller 6, an outer roller 4 installed on an outer circumferential surface of the needle roller 5 to reduce friction between the housing 2 and the shaft 1; The lid is assembled to the lower portion of the outer roller 4 in order to prevent the outer roller 4 from being separated. An inner clip 8, a boot 10 having one end connected to the housing 2 and an end connected to the shaft 1, and clamping bands 11 and 12 for fixing the boot 10, respectively. It is made, including.

The configuration of the ball-type joint provided on the tire side (outboard side) centering on the shaft 1 is connected to one end of the shaft 1 that is rotated by receiving the rotational power of the tripod type constant velocity joint. An inner race 15, an outer race 13 installed outside the inner race 15, a ball 16 for transmitting rotational power of the inner race 15 to the outer race 13, and A cage 14 for supporting the ball 16, a sensor ring 17 installed outside the outer race 13, and one end connected to the shaft 1 are connected to the outer race 13. Boot 18 is connected to one end and the clamping band (19, 20) for fixing the boot (18).

A damper 21 is installed in the middle of the shaft 1 using bands 22 and 23 and the damper 21 has a structure in which a mass is installed therein.

The operation of a constant velocity joint according to the above construction is as follows.

When the rotational power output from the engine (not shown) is transmitted to the housing 2 via a transmission (not shown), the housing 2 is rotated. The rotational power of the housing 2 is the outer roller 4, It is transmitted to the spider 3 through the needle roller 5 and the inner roller 6 to rotate the shaft 1 connected to the spider 3. In addition, the rotational power of the shaft 1 is transmitted to the outer race 13 through the inner race 15 and the ball 16 to rotate the wheel (not shown) connected to the outer race 13.

In this case, in the tripod type joint provided on the engine side (inboard side) with respect to the shaft 1, the outer roller 4 is associated with the outer roller 4 by sliding the inside of the track groove of the housing 2. As the rotation angle of the shaft 1 is changed, it becomes sharp according to the displacement of the vehicle, and in the ball type constant velocity joint provided on the wheel side (outboard side) around the shaft 1, the ball 16 As a result, the rotation angle of the outer race 13 is changed, and thus the angle of the outer race 13 is cut according to the displacement of the vehicle.

In addition, the boot 10 on the side of the tripod type joint and the boot 18 on the side of the ball type joint enclose the outside of the tripod type joint and the ball type joint, respectively, so that the tripod- To prevent damage by the material.

In addition, when the torque output from the engine transmits torque to the wheel side through the transmission 1 through the transmission, unbalanced rotation occurs at any rotational speed in the shaft 1 rotating at a high speed. Such unbalanced rotation is preferable Causing undesirable vibrations and adversely affecting the operation of the drive system. In order to suppress undesired vibration caused by such an unbalanced rotation, the damper 2 installed in the middle portion of the shaft 1 has a buzzing noise due to the harmful vibration frequency occurring at the shaft 1 during the high speed rotation of the shaft 1. to prevent booming noise.

However, the conventional tripod type constant velocity joint boot 10 as described above has a problem in that the manufacturing cost increases because the roller assembly uses a separate stopper to prevent the roller assembly from being separated from the housing 2. have.

SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional problems as described above, and the release prevention jaw that can prevent the roller assembly from being separated from the housing is formed integrally with the boot to be combined with the housing to reduce the manufacturing cost relatively. To provide a boot for a tripod type constant velocity joint.

As a means for achieving the above object, the configuration of the present invention is preferably made of a bellows shape that is elastically folded and formed of a structure in which the separation prevention protrusion is formed on the inner circumferential surface of the coupling portion with the housing.

In the configuration of the present invention, the above-described separation prevention jaw is preferably formed in the form of a straight cross section.

The configuration of the present invention is preferably such that the above-described separation prevention jaw is molded by the blowing method.

In the configuration of the present invention, the shape radius of the separation prevention jaw is preferably formed up to 30% of the height of the roller assembly height h and the intersection of the outer ring track of the housing.

The present invention has an effect of relatively reducing the manufacturing cost by being integrally formed in the boot and coupled with the housing, which can prevent the roller assembly from being separated from the housing.

1 is a cross-sectional view of a general constant velocity joint.
2 is a sectional view taken along the line AA in Fig.
3 is an external configuration view of a general constant velocity joint.
Figure 4 is a cross-sectional view showing the installation of the tripod type constant velocity joint boot according to an embodiment of the present invention.
Figure 5 is a longitudinal cross-sectional view showing the installation of the tripod type constant velocity joint boot according to an embodiment of the present invention.
6 is a cross-sectional structural view of a boot for a tripod type constant velocity joint according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention. Other objects, features, and operational advantages, including the purpose, operation, and effect of the present invention will become more apparent from the description of the preferred embodiments.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not to be construed as limiting the scope of the invention as disclosed in the accompanying claims. It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities, many of which are within the scope of the present invention. In addition, the terms or words used in the specification and claims herein should not be construed as being limited to the ordinary or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their invention in the best way. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

4 is a cross-sectional view showing the installation of a tripod type constant velocity joint boot according to an embodiment of the present invention, and FIG. 5 is a diagram of a tripod type constant velocity joint boot installed according to an embodiment of the present invention. Figure 6 is a longitudinal cross-sectional view showing a state, Figure 6 is a cross-sectional structural view of the boot for the tripod type constant velocity joint according to an embodiment of the present invention.

As shown in Figures 4 to 6, the configuration of the boots for the tripod type constant velocity joint (30) according to an embodiment of the present invention is made of a bellows shape that is elastically folded and is coupled to the housing portion The separation prevention jaw 31 is formed on the inner circumferential surface.

The separation prevention jaw 31 is molded by a blowing method.

The shape radius of the separation prevention jaw 31 is formed to the intersection of the outer ring track of the housing 3 and the 30% point of the height (h) of the roller assembly.

The operation of the tripod type constant velocity joint boot according to the embodiment of the present invention by the above configuration is as follows.

The boot 30 on the tripod type joint side wraps around and seals the outside of the tripod type joint to prevent the tripod type joint from being damaged by external contaminants.

In addition, if the roller assembly is pulled out to the outside of the housing 3 as much as possible to prevent further separation by the separation prevention jaw 31 to prevent the roller assembly from being completely separated from the housing (3).

In this case, the shape radius of the separation prevention jaw 31 is formed at the point of 30% of the height of the roller assembly h and the intersection of the outer ring track of the housing 3 so that the roller assembly moves inside the housing 3. As the axial stroke becomes relatively large, the joint design range of the vehicle is expanded.

30: boot 31: escape bump

Claims (4)

It is made of elastic bellows,
Boots for tripod type constant velocity joints, characterized in that formed in the structure that the separation prevention protrusion protruding on the inner peripheral surface of the coupling portion with the housing. The method of claim 1,
The departure prevention jaw is a tripod type constant velocity joint boot, characterized in that the cross section is formed in a vertical straight shape. The method of claim 1,
Boots for tripod type constant velocity joint, characterized in that the release prevention jaw is molded by the blowing method. The method of claim 1,
The shape radius of the separation prevention jaw is a boot for a tripod type constant velocity joint, characterized in that formed to the intersection of the outer ring track of the housing 30% of the height (h) of the roller assembly.
KR1020110146020A 2011-12-29 2011-12-29 Boot for tripod type constant velocity joint KR20130077356A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110146020A KR20130077356A (en) 2011-12-29 2011-12-29 Boot for tripod type constant velocity joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110146020A KR20130077356A (en) 2011-12-29 2011-12-29 Boot for tripod type constant velocity joint

Publications (1)

Publication Number Publication Date
KR20130077356A true KR20130077356A (en) 2013-07-09

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KR1020110146020A KR20130077356A (en) 2011-12-29 2011-12-29 Boot for tripod type constant velocity joint

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KR (1) KR20130077356A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160070421A (en) 2014-12-10 2016-06-20 이래오토모티브시스템 주식회사 Assembling method for Tripod type constant velocity joint

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160070421A (en) 2014-12-10 2016-06-20 이래오토모티브시스템 주식회사 Assembling method for Tripod type constant velocity joint

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