CN110513401B - Tripod steering gear - Google Patents
Tripod steering gear Download PDFInfo
- Publication number
- CN110513401B CN110513401B CN201910884699.5A CN201910884699A CN110513401B CN 110513401 B CN110513401 B CN 110513401B CN 201910884699 A CN201910884699 A CN 201910884699A CN 110513401 B CN110513401 B CN 110513401B
- Authority
- CN
- China
- Prior art keywords
- rolling
- pin
- shell
- axial
- sliding cavity
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 38
- 230000000712 assembly Effects 0.000 claims abstract description 6
- 238000000429 assembly Methods 0.000 claims abstract description 6
- 239000007769 metal material Substances 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Power Steering Mechanism (AREA)
Abstract
The invention discloses a tripod type steering gear, which comprises a shell and an axial rolling device arranged in the shell, wherein a sliding cavity is arranged in the shell, and three guide grooves parallel to the axial direction are formed in the outer edge of the sliding cavity; the axial rolling device comprises a connecting shaft and three ball pins connected to two ends of the connecting shaft, wherein the three ball pins comprise three pin frames and rolling assemblies of pin shafts rotatably arranged on the three pin frames; the axial rolling device is arranged in the sliding cavity, and the rolling component is embedded in the guide groove and can axially slide along the guide groove. Compared with the traditional sliding steering gear, the sliding steering gear has the advantages that the axial movement mode is changed from sliding to rolling, the friction force of axial movement is greatly reduced, and the service life of the product is prolonged.
Description
Technical Field
The invention relates to the technical field of steering systems, in particular to a three-ball pin steering gear.
Background
The steering gear is a very important key component in a vehicle steering system, and the principle is that a driver rotates a steering wheel to drive a steering shaft and the steering gear converts the rotation motion of the steering wheel into axial motion through an internal gear, and the performance of the steering gear directly influences the stability and reliability of the vehicle steering.
Most of the existing steering gears complete axial sliding by matching the optical axis with the rack with the bearing inner ring, and because the optical axis and the bearing inner ring are in sliding friction, the abrasion between the optical axis and the bearing can be aggravated after long-time use, so that steering abnormal sound is caused to influence driving quality and maintenance cost is increased.
Disclosure of Invention
Compared with the traditional sliding steering gear, the three-ball pin steering gear changes the axial movement mode from sliding to rolling, greatly reduces the friction force of axial movement and prolongs the service life of products.
In order to achieve the above purpose, the present invention provides a tripod steering gear, comprising a housing, and an axial rolling device disposed in the housing, wherein the housing has a sliding cavity, and the outer edge of the sliding cavity has three guide grooves parallel to the axial direction;
The axial rolling device comprises a connecting shaft and three ball pins connected to two ends of the connecting shaft, wherein the three ball pins comprise three pin frames and rolling assemblies, and the rolling assemblies are three groups and are respectively and rotatably arranged on three pin shafts of the three pin frames;
The axial rolling device is arranged in the sliding cavity, and the three groups of rolling components are respectively embedded in the three guide grooves and can axially roll along the guide grooves.
Further provided is that: and a three-column groove shell matched with the sliding cavity in size and shape is embedded in the sliding cavity of the shell, and the three-column groove shell is provided with a track corresponding to the three guide grooves.
Further provided is that: the three-column tank shell is made of metal materials and is subjected to heat treatment hardening treatment.
Further provided is that: the three tracks of the three-column groove shell are arranged in a non-equally-divided mode, and two opposite side wall surfaces of the tracks are arc surfaces.
Further provided is that: the rolling assembly comprises a ball ring and a rolling pin, the ball ring is sleeved on a pin shaft of the tripod, and the rolling pin is arranged between the ball ring and the pin shaft.
Compared with the traditional sliding steering gear, the axial movement mode is changed from sliding to rolling, so that the friction force of axial movement is greatly reduced, and the service life of the product is prolonged.
Drawings
FIG. 1 is a schematic view of an axial end face structure of a three ball-and-pin steering gear of the present invention;
FIG. 2 is a schematic illustration of an axially separated configuration of the commutator;
Fig. 3 is a schematic diagram of a separation structure of the axial rolling device.
The following reference numerals are attached thereto in combination with the accompanying drawings:
1. a housing; 11. a guide groove; 2. an axial rolling device; 21. a connecting shaft; 22. a tripod; 221. a tripod; 2211. a pin shaft; 222. a ball ring; 223. needle roller; 224. a retainer ring; 225. clamping springs; 3. a three-column cell shell; 31. a track.
Detailed Description
One embodiment of the present invention will be described in detail below with reference to the attached drawings, but it should be understood that the scope of the present invention is not limited by the embodiment.
The invention relates to a three-ball pin 22 type steering gear, as shown in figures 1 to 3, which comprises a shell 1 and an axial rolling device 2 arranged in the shell 1, wherein the shell 1 is formed by casting a metal material integrally, a sliding cavity for installing the axial rolling device 2 is arranged in the shell 1, and three guide grooves 11 which are arranged in a non-equally dividing way and are parallel to an axis are formed in the outer edge surface of the sliding cavity; the axial rolling device 2 comprises a connecting shaft 21 and three ball pins 22 connected to two ends of the connecting shaft 21, wherein the ball pins comprise a tripod 221 and rolling components which are respectively and rotatably arranged on three pin shafts 2211 of the tripod 221, the rolling components preferably comprise a ball ring 222, a rolling pin 223, a check ring 224 and a snap spring 225, the ball ring 222 is provided with three pin shafts 2211 which are respectively sleeved on the tripod 221, the rolling pin 223 is arranged between the ball ring 222 and the pin shafts 2211 so that the ball ring 222 is in rolling fit with the pin shafts 2211, the friction force between the ball ring 222 and the pin shafts 2211 is greatly reduced, and the clamping ring 225 and the snap spring 225 are both arranged on the pin shafts 2211 and are positioned outside the ball ring 222 so as to lock the ball ring 222 on the pin shafts 2211; the axial rolling device 2 is installed in the sliding cavity, and correspondingly, three ball rings 222 of the three ball pins 22 are respectively embedded in the three guide grooves 11, and the ball rings 222 can axially roll along the guide grooves 11.
Preferably, a three-column groove shell 3 with the size and shape matched with the sliding cavity is embedded in the sliding cavity of the shell 1, the three-column groove shell 3 is provided with a track 31 corresponding to the three guide grooves 11, and a ball ring 222 of the three-ball pin 22 is arranged in the track 31; preferably, the three-column housing 3 is made of a metal material and hardened by heat treatment, so that the three-column housing 3 has high strength and high wear resistance; preferably, the three rails 31 of the three-column housing 3 are arranged in a non-equal manner, and two opposite sides of the rails 31 are in an arc surface structure, so that the outer spherical surface of the spherical ring 222 and the arc surface of the three-column housing 3 can be self-aligned.
Compared with the traditional sliding steering gear, the axial movement mode is changed from sliding to rolling, so that the friction force of axial movement is greatly reduced, and the service life of the product is prolonged.
The above disclosure is merely an example of the present invention, but the present invention is not limited thereto, and any variations that can be considered by a person skilled in the art should fall within the protection scope of the present invention.
Claims (2)
1. The three-ball pin steering gear is used for converting the rotary motion of a steering wheel into axial motion and is characterized by comprising a shell and an axial rolling device arranged in the shell, wherein a sliding cavity is arranged in the shell, and three guide grooves parallel to the axial direction are formed in the outer edge of the sliding cavity;
The axial rolling device comprises a connecting shaft and three ball pins connected to two ends of the connecting shaft, wherein the three ball pins comprise three pin frames and rolling assemblies, and the rolling assemblies are three groups and are respectively and rotatably arranged on three pin shafts of the three pin frames;
the axial rolling device is arranged in the sliding cavity, and three groups of rolling assemblies are respectively embedded in the three guide grooves and can axially roll along the guide grooves;
The sliding cavity of the shell is internally embedded with a three-column groove shell with the size and shape matched with the sliding cavity, the three-column groove shell is provided with tracks corresponding to the three guide grooves, the three tracks of the three-column groove shell are arranged in a non-equally dividing way, and two opposite side wall surfaces of the tracks are arc surfaces;
The rolling assembly comprises a ball ring and a rolling pin, the ball ring is sleeved on a pin shaft of the tripod, and the rolling pin is arranged between the ball ring and the pin shaft.
2. The tripod type steering gear according to claim 1, wherein said three-column housing is made of a metal material and is heat-treated to be hardened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884699.5A CN110513401B (en) | 2019-09-19 | 2019-09-19 | Tripod steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884699.5A CN110513401B (en) | 2019-09-19 | 2019-09-19 | Tripod steering gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110513401A CN110513401A (en) | 2019-11-29 |
| CN110513401B true CN110513401B (en) | 2024-08-30 |
Family
ID=68632769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910884699.5A Active CN110513401B (en) | 2019-09-19 | 2019-09-19 | Tripod steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110513401B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008089152A (en) * | 2006-10-04 | 2008-04-17 | Ntn Corp | Automobile driving shaft |
| KR20150049182A (en) * | 2013-10-29 | 2015-05-08 | 현대위아 주식회사 | Tripod type constant velocity joint |
| CN206429558U (en) * | 2017-01-18 | 2017-08-22 | 大连民族大学 | The cage universal joint of separate type |
| CN210440478U (en) * | 2019-09-19 | 2020-05-01 | 浙江向隆机械有限公司 | Three-ball-pin type steering gear |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4115043B2 (en) * | 1999-06-07 | 2008-07-09 | Ｎｔｎ株式会社 | Tripod type constant velocity universal joint |
| JP3979779B2 (en) * | 2000-11-28 | 2007-09-19 | Ｎｔｎ株式会社 | Tripod type constant velocity universal joint retaining device |
| AU2002233208A1 (en) * | 2000-12-02 | 2002-06-11 | Ina-Schaeffler Kg | Prismatic joint |
| KR100834215B1 (en) * | 2006-04-28 | 2008-05-30 | 위아 주식회사 | tripod type constant velocity joint |
| JP2011140967A (en) * | 2010-01-05 | 2011-07-21 | Ntn Corp | Drive shaft |
| CN106195038A (en) * | 2016-09-18 | 2016-12-07 | 吉林大学 | A kind of carbon fiber semiaxis and preparation method thereof |
| CN206409537U (en) * | 2017-01-12 | 2017-08-15 | 吉林北方捷凯传动轴有限公司 | Tripod moves universal joint |
| CN207864456U (en) * | 2017-12-31 | 2018-09-14 | 浙江向隆机械有限公司 | A kind of constant velocity driving shaft that four-wheel drive vehicle trailing wheel uses |
| CN208294973U (en) * | 2018-04-26 | 2018-12-28 | 华南理工大学 | A kind of combined three ball pin style constant speed universal joint of ball steel ball |
-
2019
- 2019-09-19 CN CN201910884699.5A patent/CN110513401B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008089152A (en) * | 2006-10-04 | 2008-04-17 | Ntn Corp | Automobile driving shaft |
| KR20150049182A (en) * | 2013-10-29 | 2015-05-08 | 현대위아 주식회사 | Tripod type constant velocity joint |
| CN206429558U (en) * | 2017-01-18 | 2017-08-22 | 大连民族大学 | The cage universal joint of separate type |
| CN210440478U (en) * | 2019-09-19 | 2020-05-01 | 浙江向隆机械有限公司 | Three-ball-pin type steering gear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110513401A (en) | 2019-11-29 |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |