KR20140074062A - Continuous velocity joint - Google Patents

Continuous velocity joint Download PDF

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Publication number
KR20140074062A
KR20140074062A KR1020120142251A KR20120142251A KR20140074062A KR 20140074062 A KR20140074062 A KR 20140074062A KR 1020120142251 A KR1020120142251 A KR 1020120142251A KR 20120142251 A KR20120142251 A KR 20120142251A KR 20140074062 A KR20140074062 A KR 20140074062A
Authority
KR
South Korea
Prior art keywords
shaft
spider
spring
velocity joint
constant velocity
Prior art date
Application number
KR1020120142251A
Other languages
Korean (ko)
Inventor
이제동
이재원
Original Assignee
현대위아 주식회사
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 현대위아 주식회사 filed Critical 현대위아 주식회사
Priority to KR1020120142251A priority Critical patent/KR20140074062A/en
Publication of KR20140074062A publication Critical patent/KR20140074062A/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
    • 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
    • F16D3/16—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
    • F16D2003/2026—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 with trunnion rings, i.e. with tripod joints having rollers supported by a ring on the trunnion

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

According to the present invention, a constant velocity joint having a structure capable of reducing axial force generation and improving vibration noise of a vehicle. The constant velocity joint according to the present invention includes: a tripod housing (10) which has a spherical roller arranged in an inner space by being connected to a transmission; a spider which controls the spherical roller in the space part of the tripod housing (10) installed at a shaft; and an elastic member which generates a restoring force according to the sliding and the extent of a slope of the shaft by being installed at the shaft. Here, the elastic member may be a first spring arranged at one side of the spider and a second spring arranged at another side of the spider. Also, the shaft is divided into a rear end part and a front end part where the spider is installed, and a protrusion part with a fixed height is formed at the boundary between the front end part and the rear end part. The first spring is arranged between the spider and the protrusion part. Together with this, a protrusion is formed at the front end part of the shaft and the second spring is arranged between the spider and the protrusion of the front end of the shaft.

Description

Continuous velocity joint

The present invention relates to a constant velocity joint having a structure capable of reducing axial force generation and improving vibration and noise of a vehicle.

In general, a hook joint, a flexible joint, or the like is used in the case of a propeller shaft having a small power transmission angle, and a drive shaft (not shown) of a front wheel drive vehicle having a large power transmission angle A constant velocity joint is used.

The constant velocity joint is mainly used for the axle of the independent suspension type front wheel drive vehicle because it can smoothly transmit the power at the constant velocity even when the intersection angle of the drive shaft and the driven shaft is large.

The tripod type constant velocity joint, which is one of the constant velocity joints, transmits the power according to the displacement of the suspension of the vehicle and the change of the steering angle of the wheel.

The tripod-type constant velocity joint shown in FIG. 1 includes a tripod housing 1 which is fastened to the transmission side and restrains a spherical roller 2b, a tripod housing 1 fixed to the shaft 3 and a spherical roller 2b A needle roller 2c for transmitting the rotational force of the spherical roller 2b to the spider 2a and a striker outer 2d for preventing the spherical roller 2b from coming off outer and a circlip (2e: circlip).

The tripod type constant velocity joint further includes a spring cap 6 provided at an end of the shaft 3 and a spring 5 provided between the spring cap 6 and the tripod housing 1. [ The spring 5 prevents the tripod housing 1 from being disengaged from the transmission side due to a severe vibration and the shaft 1 presses the spring 5 through the spring cap 6. [

Generally, when the position of the shift position of the vehicle is the "D" range, or when the air conditioner compressor is operated, the engine load is increased and the axial force by the turning angle of the constant velocity joint is increased.

In the tripod type constant velocity joint having the structure shown in Fig. 1, when the shaft 3 is inclined at a predetermined angle, not horizontal to the tripod housing 1, that is, So that it slides in the housing 1 with a tilt. The sliding friction generated at this time causes an axial force to be generated, and this axial force is transmitted to the tripod housing 1 to cause vibration in the entire vehicle.

On the other hand, when the rotational frequency of the inboard joint of the front wheel drive shaft is equal to the natural frequency of the vehicle in the constant velocity joint, resonance vibration occurs, and thus the constant velocity joint generates lateral vibration. This lateral vibration causes the sliding friction of the spherical roller 2b on the trunnion and the rolling friction of the spherical roller 2b along the trunnion axis in the tripod housing 1.

In a typical tripod constant velocity joint, there is no alternative to prevent the occurrence of the above phenomenon. 1, the spring 5 is mounted on the end of the shaft 1 through the spring cap 6. However, the spring 5 can be rotated in a direction from the transmission The sliding friction generated in the spider 2a contacting the inner wall surface of the tripod housing 1 can not be reduced. Therefore, a structure capable of improving the axial force and suppressing the generation of vibration is required.

An object of the present invention is to provide a constant velocity joint having a structure capable of reducing axial force generation and improving vibration noise of a vehicle, which is solved in the constant velocity joint.

In order to achieve the above object, the constant velocity joint according to the present invention comprises a tripod housing coupled to a transmission side and having a spherical roller disposed in an inner space thereof; A spider mounted on the shaft for restraining the spherical roller within the space portion of the tripod housing; And an elastic member which is mounted on the shaft and generates a restoring force in accordance with the movement of the shaft in terms of degree of inclination and sliding.

Here, the elastic member may be a first spring disposed on one side of the spider and a second spring disposed on the other side of the spider.

Further, the shaft is divided into a front end portion and a rear end portion to which the spider is mounted, and a tuck portion having a predetermined height is formed at a boundary portion thereof. A first spring is disposed between the spider and the jaw portion. At the same time, a protrusion is formed at the tip of the tip of the shaft, and the second spring is disposed between the spider and the protrusion at the tip of the shaft.

The constant velocity joint according to the present invention has the effect of reducing the axial force generation through the elastic member mounted on the shaft and improving the vibration noise of the vehicle.

1 is a sectional view of a general tripod type constant velocity joint;
2 is a sectional view of a tripod type constant velocity joint according to a preferred embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to embodiments and drawings thereof.

FIG. 2 is a cross-sectional view of a tripod type constant velocity joint according to a preferred embodiment of the present invention, wherein a tripod type constant velocity joint according to an embodiment of the present invention includes three spherical rollers 32 A spider 33 mounted on the shaft 30 for restraining the spherical roller 32 and a spherical roller 32 for rotating the spherical roller 32. The triple- (Which is not shown in Fig. 2, but has the same structure as "2c" in Fig. 1)

2, the distal end portion 31-1 of the shaft 30 has a diameter smaller than that of the rear end portion 31-2, and therefore, the distal end portion 31-1 and the rear end portion 31-2, A jaw portion 30-1 with a predetermined height is formed.

The distal end 31-1 of the shaft 30 is located in the inner space of the tripod housing 10 and the spider 33 is mounted on the distal end 31-1 of the shaft 30. [

The tripod type constant velocity joint according to the preferred embodiment of the present invention further includes a first elastic member 41 and a second elastic member 42 mounted on the shaft 30. [ The first elastic member 41 and the second elastic member 42 are preferably compression springs surrounding the outer circumferential surface of the shaft 30 (hereinafter, the first elastic member 41 is referred to as a first spring, The member 42 is referred to as a second spring).

A first spring 41 is disposed between the jaw 30-1 of the shaft 30 and the spider 33. [ On the other hand, a protrusion 30-2 is formed at the front end of the distal end 31-1 of the shaft 30 on which the spider 33 is mounted and a second spring (not shown) is inserted between the spider 33 and the protrusion 30-2 42 are located.

Hereinafter, the function of the tripod type constant velocity joint of the present invention constructed as described above will be described. First, the force (arrow) shown in FIG. 2 is defined as follows.

P: force acting on the shaft 30

P h : horizontal component of P

F S and F R : force that the spherical roller 32 applies to the tripod housing 10 by sliding and rolling.

F 1 : Force applied to the tripod housing 10 when the spherical roller 32 moves in a direction perpendicular to the longitudinal direction of the shaft 30.

F 1h : horizontal component of F 1

F 2 and F 3 : the restoring force of the first and second springs 41 and 42

F 2h and F 3h : horizontal component of F 2 and F 3 .

In the tripod type constant velocity joint of the present invention having the structure shown in FIG. 2, power is transmitted to the shaft 30 through the spider 33.

However, when the constant-velocity joint is rotated at a predetermined angle, that is, in the state in which the shaft 30 is inclined at an angle of &thetas; with respect to the center line of the tripod housing 10 The spider 33 moves (slides) along the shaft 30 in the initial state (shown by the dotted line) and finally reaches the tip of the tripod housing 10 10-1. Therefore, the first spring 41 located between the spider 33 and the jaw 30-1 of the shaft 30 is compressed as shown in Fig.

The sliding friction force F S and the rolling friction force F R and the force F 1 when the spherical roller 32 is moved in the direction perpendicular to the longitudinal direction of the shaft 30, (Hereinafter referred to as "first direction") of the horizontal component F 1h of the shaft 30 toward the shaft 30.

Under such a condition, however, the horizontal component force F 2h of the restoring force F 2 of the compressed first spring 41 acts in a direction opposite to the first direction (i.e., the direction toward the tripod housing 10).

The horizontal component F 2h of the restoring force F 2 of the first spring 41 is equal to the sum of the sliding frictional force F S , the rolling frictional force F R and the spherical roller 32 acting on the spherical roller 32 Thereby absorbing the horizontal force F 1h of the force F 1 when moving in the direction perpendicular to the longitudinal direction of the shaft 30. [ As a result, the axial force is reduced, and the lateral vibration of the vehicle caused by the friction of the spider 33 with the tripod housing 10 can be reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes and modifications may be made without departing from the scope of the present invention.

Claims (3)

In a constant velocity joint,
A tripod housing (10) fastened to the transmission side and having a spherical roller (32) accommodated in an inner space thereof;
A spider (33) mounted on the shaft (30) and restraining the spherical roller (32) in the space portion of the tripod housing (10); And
And an elastic member mounted on the shaft (30) to generate a restoring force in accordance with the degree of inclination of the shaft (30) and the movement of the spider (33). The constant velocity joint according to claim 1, wherein the elastic member is a first spring (41) on one side of the spider (33) and a second spring (42) disposed on the other side of the spider (33). The spindle motor according to claim 1 or 2, wherein the shaft (30) is divided into a front end portion (31-1) and a rear end portion (31-2) 1 is formed and a first spring 41 is disposed between the spider 33 and the jaw 30-1,
A protrusion 30-2 is formed at the front end of the distal end 31-1 of the shaft 30 exposed to the outside of the spider 33 and the second spring 42 is fixed to the distal end of the spider 33, (30-2). ≪ / RTI >
KR1020120142251A 2012-12-07 2012-12-07 Continuous velocity joint KR20140074062A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120142251A KR20140074062A (en) 2012-12-07 2012-12-07 Continuous velocity joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120142251A KR20140074062A (en) 2012-12-07 2012-12-07 Continuous velocity joint

Publications (1)

Publication Number Publication Date
KR20140074062A true KR20140074062A (en) 2014-06-17

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KR1020120142251A KR20140074062A (en) 2012-12-07 2012-12-07 Continuous velocity joint

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110405453A (en) * 2019-08-13 2019-11-05 宁波福尔达智能科技有限公司 Vehicle air conditioning air outlet universal joint and universal shaft assemble device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110405453A (en) * 2019-08-13 2019-11-05 宁波福尔达智能科技有限公司 Vehicle air conditioning air outlet universal joint and universal shaft assemble device
CN110405453B (en) * 2019-08-13 2024-02-09 宁波福尔达智能科技股份有限公司 Universal joint and universal shaft assembly device for air outlet of vehicle air conditioner

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E601 Decision to refuse application