CN106321783B - A kind of worm screw support construction - Google Patents
A kind of worm screw support construction Download PDFInfo
- Publication number
- CN106321783B CN106321783B CN201610852796.2A CN201610852796A CN106321783B CN 106321783 B CN106321783 B CN 106321783B CN 201610852796 A CN201610852796 A CN 201610852796A CN 106321783 B CN106321783 B CN 106321783B
- Authority
- CN
- China
- Prior art keywords
- flange
- arcuate socket
- worm screw
- bearing
- butterfly spring
- 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.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0409—Electric motor acting on the steering column
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Gear Transmission (AREA)
- Power Steering Mechanism (AREA)
Abstract
The present invention provides a kind of worm screw support constructions comprising the inner wall of elastic connection sleeve, bearing and butterfly spring, the outer surface of the bearing and the elastic connection sleeve is interference fitted, and the inner surface of the bearing and worm screw are interference fitted；First face of the butterfly spring fits with the bearing；The first end of the elastic connection sleeve is provided with the engaging flange of annular, and there are two limit opening slots, the two limit opening slots, and the engaging flange is divided into the first flange and the second flange for setting on the engaging flange；It is provided with the first arcuate socket and the second arcuate socket on the butterfly spring, there is the supporting rib matched with the limit opening slot between first arcuate socket and second arcuate socket；First flange and second flange are each passed through first arcuate socket and the second face of second arcuate socket and the butterfly spring fits.Worm screw support construction of the invention can greatly reduce a possibility that larger abnormal sound occurs for steering system.
Description
Technical field
The present invention relates to automobile steering system technical fields, and in particular to a kind of worm screw support construction.
Background technique
In the electric boosting steering system of automobile, especially in pipe column type electric servo steering system, usually utilize
Worm and gear is as deceleration mechanism.Wherein worm screw is the transferring element of a power in deceleration mechanism, worm screw and deceleration mechanism shell
Worm screw support construction is used between body, to play the role of supporting worm and transmission force.
NVH (english abbreviation of Noise, Vibration, Harshness) performance has become the emphasis of vehicle quality at present
Attentinal contents, each automobile brand is all in the NVH performance for paying close attention to and being promoted each system, and wherein the NVH performance of steering system is to vehicle
Comfort quality have large effect.The NVH of steering system optimizes, and mainly carries out to its transmission path, transmitting gap
It improves, wherein worm screw support construction is also one of improved important component.Worm screw support construction is usually standard rolling bearing at present, i.e.,
The connection of worm screw Yu deceleration mechanism shell is supported and realized to worm screw by bearing.Since bearing is rigid element,
The radial impact that worm screw is subject to cannot be preferably buffered, causes to generate abnormal sound because of shock between bearing and deceleration mechanism shell,
Meanwhile the axial impact that worm screw is subject to can not be preferably buffered, it is connected so that the axial impact can be transmitted to worm screw
Each connection transmission parts on, cause to generate abnormal sound because of shock between each connection transmission parts, so that steering system
Abnormal sound is larger.
Summary of the invention
The object of the present invention is to provide a kind of worm screw support constructions, biggish to solve steering system abnormal sound in the prior art
Problem.
To achieve the above object, the present invention provides the following technical scheme that
A kind of worm screw support construction comprising elastic connection sleeve, bearing and butterfly spring, the outer surface of the bearing with
The inner wall of the elastic connection sleeve is interference fitted, and the inner surface of the bearing and worm screw are interference fitted；The of the butterfly spring
It fits on one side with the bearing；The first end of the elastic connection sleeve is provided with the engaging flange of annular, the engaging flange
There are two limit opening slot, the two limit opening slots, and the engaging flange is divided into the first flange and the second flange for upper setting；
The first arcuate socket and the second arcuate socket are provided on the butterfly spring, between first arcuate socket and second arcuate socket
With the supporting rib matched with the limit opening slot；First flange and second flange are each passed through described first
Second face of arcuate socket and second arcuate socket and the butterfly spring fits.
It preferably, further include that the retaining ring engaged between flange and second face is set, it is remote on the retaining ring
Side from the engaging flange is provided with limit rib；The limit matched with the limit rib is provided at first arcuate socket
Position groove.
Preferably, protrusion corresponding with the limiting groove is provided at first arcuate socket.
Preferably, be provided with positioning pin on second face, be provided in the mounting hole of deceleration mechanism shell with it is described fixed
The locating slot that position pin matches.
Preferably, the side on the butterfly spring far from the supporting rib is arranged in the positioning pin.
Preferably, the first side of second arcuate socket is provided with multiple first openings, and each first opening is evenly arranged on
On the extending direction of first side.
Preferably, second side of second arcuate socket is provided with multiple second openings, and each second opening is evenly arranged on
On the extending direction of described second side.
Preferably, each first opening is staggered with each second opening.
Preferably, construction opening slot is provided on second flange.
Preferably, the second end of the elastic connection sleeve is provided with gear and connects flange, it is described keep off connect the side of flange with it is described
Bearing fits, and the other side that the gear connects flange fits with the limiting stand terrace on the worm screw.
The beneficial effects of the present invention are:
Worm screw support construction of the invention, bearing are arranged in elastic connection sleeve, efficiently avoid bearing and slow down
Mechanism shell directly contacts, so that being not likely to produce abnormal sound between bearing and deceleration mechanism shell；Simultaneously as the elastic connection sleeve
Be arranged on butterfly spring, which is supported worm screw by butterfly spring, when worm screw by
When axial impact and radial impact, butterfly spring will deform on axially and radially, so as to axial impact and
Radial impact is preferably buffered, so that be less also easy to produce abnormal sound between bearing and deceleration mechanism shell, and is made and worm screw
It is not easy to produce abnormal sound between connected each connection transmission parts, and then greatly reduces steering system and larger abnormal sound occurs
Possibility.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
It needs attached drawing to be used to be briefly described, and specific embodiments of the present invention will be made further specifically in conjunction with attached drawing
It is bright, wherein
Fig. 1 is the schematic diagram of worm screw support construction provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of butterfly spring provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of retaining ring provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of elastic connection sleeve provided in an embodiment of the present invention；
Fig. 5 is the schematic diagram of bearing provided in an embodiment of the present invention；
Fig. 6 is the schematic diagram of worm screw provided in an embodiment of the present invention；
Fig. 7 is the schematic diagram of locating slot provided in an embodiment of the present invention；
Fig. 8 is the schematic diagram of worm screw support construction provided in an embodiment of the present invention when in use.
It is attached marked in the figure:
11, the opening of butterfly spring 12, first 13, supporting rib 14, raised 15, positioning pin
16, limiting groove 17, the first arcuate socket 18, second opening 21, elastic connection sleeve
22, the first flange 23, the second flange 24, limit opening slot 25, construction opening slot
26, gear connects flange 31, retaining ring 32, limit rib 41, bearing 51, worm screw
52, limiting stand terrace 61, deceleration mechanism shell 62, locating slot
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, below in conjunction with specific embodiment pair
This programme is further discussed in detail.
As shown in Figures 1 to 8, the embodiment of the invention provides a kind of worm screw support constructions comprising elastic connection sleeve 21,
Bearing 41 and butterfly spring 11, the outer surface of middle (center) bearing 41 and the inner wall of elastic connection sleeve 21 are interference fitted, bearing 41
Inner surface and worm screw 51 are interference fitted；First face of butterfly spring 11 fits with bearing 41；The first end of elastic connection sleeve 21
It is provided with the engaging flange of annular, engaging setting on flange, there are two limit opening slots 24, two limit opening slots 24 to turn over engaging
While being divided into the first flange 22 and the second flange 23；It is provided with the first arcuate socket 17 and the second arcuate socket on butterfly spring 11, first
There is the supporting rib 13 matched with limit opening slot 24 between arcuate socket 17 and the second arcuate socket；First flange 22 and second turns over
Side 23 is each passed through the first arcuate socket 17 and the second arcuate socket and the second face of butterfly spring 11 fits.It is understood that
During installation, the first flange 22 passes through the first arcuate socket 17 and is bonded with the second face clamping of butterfly spring 11, while the second flange
23 pass through the second arcuate socket is bonded with the second face clamping of butterfly spring 11, by butterfly spring 11 be clamped on engaging flange with
Between bearing 41, supporting rib 13 will be located in limit opening slot 24 at this time；It can certainly be interpreted as the first arcuate socket 17 and
Two arcuate sockets divide butterfly spring 11 for inner ring and outer ring, are connected between inner ring and outer ring by two supporting ribs 13, and inner ring can be with
It is axially moved and the flexible deformation for passing through supporting rib 13 preferably buffers the axial impact that worm screw 51 is subject to；Butterfly spring
11 and the outer wall of elastic connection sleeve 21 fit with the wall surface at the mounting hole of deceleration mechanism shell 61；After limiting lock when installation
Tight nut fastens deceleration mechanism shell, and the installation of the worm screw support construction in deceleration mechanism shell can be realized.
Worm screw support construction provided in an embodiment of the present invention, bearing 41 are arranged in elastic connection sleeve 21, effectively keep away
Exempt from bearing 41 directly to contact with deceleration mechanism shell 61, so that being not likely to produce between bearing 41 and deceleration mechanism shell 61 different
It rings；Simultaneously as the elastic connection sleeve 21 is arranged on butterfly spring 11, the worm screw support construction is enabled to pass through butterfly bullet
Spring 11 is supported worm screw 51, when worm screw 51 is by axial impact and radial impact, butterfly spring 11 will axial and
It radially deforms, so as to preferably be buffered to axial impact and radial impact, so that bearing 41 and speed reducer
It is less also easy to produce abnormal sound between structure shell 61, and to be not easy to produce between each connection transmission parts being connected with worm screw 51 different
It rings, and then greatly reduces a possibility that larger abnormal sound occurs for steering system.
As shown in figure 3, the worm screw support construction can also include setting in another embodiment provided in an embodiment of the present invention
The retaining ring 31 between engaging flange and the second face is set, the side far from engaging flange is provided with limit rib 32 on retaining ring 31；The
The limiting groove 16 matched with limit rib 32 is provided at one arcuate socket 17.This makes it possible to make butterfly by the setting of retaining ring 31
The clamping force that the inner ring of shape spring 11 is subject in the circumferential is more uniform so that butterfly spring 11 and elastic connection sleeve 21 it
Between connection it is more secured；It also can be such that the intensity of the worm screw support construction is improved simultaneously.It is understood that limit
Muscle 32 can be formed on retaining ring 31 by the processing method of indent.
Further, corresponding with limiting groove 16 raised 14 can be set at the first arcuate socket 17, so as to
It is abutted against by the end of protrusion 14 and the outer surface of the first flange 22, so that the protrusion 14 can rush the radial direction of worm screw 51
It hits power to be buffered, it is also possible that the connection reliability between elastic connection sleeve 21 and butterfly spring 11 is higher.It is understood that
, avoid holes are also provided on the first flange 22, with the generation preferably avoided interference with.
As shown in Figure 2 and Figure 7, preferable in order to be carried out to the installation between butterfly spring 11 and deceleration mechanism shell 61
Ground positioning, while preventing butterfly spring 11 from rotating after mounting, positioning pin 15, deceleration mechanism can be set on the second face
The locating slot 62 matched with positioning pin 15 is provided in the mounting hole of shell 61.
Specifically, the side on butterfly spring 11 far from supporting rib 13 can be set in positioning pin 15, so that positioning
Pin 15 and supporting rib 13 are located at the two sides of butterfly spring 11, and then can preferably be buffered using supporting rib 13 suffered by worm screw 51
The impact arrived, so that the buffering effect of the worm screw support construction is more preferably.Preferably, positioning pin 15 and two supporting ribs 13 can in etc.
Lumbar triangle shape is distributed on butterfly spring 11, so that worm screw support construction provided in an embodiment of the present invention has more preferably
Ground buffer capacity.
In another embodiment provided by the invention, multiple first openings have been can be set in the first side of the second arcuate socket
12, each first opening 12 is evenly arranged on the extending direction of the first side, so that between the second flange 23 and the second arcuate socket
It installs more convenient；The elasticity of butterfly spring 11 is also improved simultaneously, so as to preferably buffer diameter suffered by worm screw 51
To impact.
Further, multiple second openings 18 have can be set in second side of the second arcuate socket, and each second opening 18 is uniformly distributed
On the extending direction of second side, so that the property easy for installation between the second flange 23 and the second arcuate socket is greatly increased,
The elasticity of butterfly spring 11 is also further improved simultaneously, which rushes axial direction suffered by worm screw 51
Hitting has preferably buffering effect with radial impact.
Specifically, each first opening 12 can be staggered with each second opening 18, so that the butterfly spring 11 exists
Intensity and elasticity having the same at second arcuate socket, and then butterfly spring 11 is enabled to be hardly damaged and can preferably delay
Rush impact suffered by worm screw 51.It is understood that the opening direction of the first opening 12 is towards the center of butterfly spring 11, the
The opening direction of two openings 18 is backwards to the center of butterfly spring 11.
As shown in figure 4, in order to make the second flange 23 that there is preferable deformability, so that the second flange 23 and butterfly bullet
Installation between spring 11 is more convenient, and construction opening slot 25 can be set on the second flange 23.Preferably, the construction opening slot
25 can be set the medium position in the extending direction of the second flange 23, with the progress for installation of being more convenient for.
Further, the second end of elastic connection sleeve 21 can be set gear and connect flange 26, gear connect the side of flange 26 with
Bearing 41 fits, and the other side that gear connects flange 26 fits with the limiting stand terrace 52 on worm screw 51, as shown in fig. 6, to
It efficiently avoids generating abnormal sound because of shock when bearing 41 is directly contacted with the limiting stand terrace 52, flange is connect by gear at this time
26 buffer function further reduced a possibility that larger abnormal sound occurs for steering system.Preferably, gear connect flange 26 can edge
The whole circle of circumferentially extending one of the second end, to play preferably buffering effect.
The above is only a preferred embodiment of the present invention, it should be pointed out that these embodiments are merely to illustrate this
It invents rather than limits the scope of the invention, moreover, after reading the contents of the present invention, relevant technical staff in the field
Various changes or modification can be made to the present invention, such equivalent forms equally fall into the application the appended claims and limited
Range.
Claims (4)
1. a kind of worm screw support construction, which is characterized in that it includes elastic connection sleeve, bearing and butterfly spring, the bearing
Outer surface and the inner wall of the elastic connection sleeve be interference fitted, the inner surface of the bearing and worm screw are interference fitted；The butterfly
First face of shape spring fits with the bearing；The first end of the elastic connection sleeve is provided with the engaging flange of annular, institute
Setting is stated on engaging flange there are two limit opening slot, the two limit opening slots by the engaging flange be divided into the first flange with
Second flange；The first arcuate socket and the second arcuate socket, first arcuate socket and described second are provided on the butterfly spring
There is the supporting rib matched with the limit opening slot between arcuate socket；First flange and second flange are worn respectively
The second face for crossing first arcuate socket and second arcuate socket and the butterfly spring fits；
It further includes the retaining ring being arranged between the engaging flange and second face, is turned on the retaining ring far from the engaging
The side on side is provided with limit rib；The limiting groove matched with the limit rib is provided at first arcuate socket；
Protrusion corresponding with the limiting groove is provided at first arcuate socket；
First side of second arcuate socket is provided with multiple first openings, and each first opening is evenly arranged on first side
On extending direction；Second side of second arcuate socket is provided with multiple second openings, and each second opening is evenly arranged on described
On the extending direction of second side；Each first opening is staggered with each second opening；
Construction opening slot is provided on second flange.
2. worm screw support construction according to claim 1, which is characterized in that be provided with positioning pin on second face, subtract
The locating slot matched with the positioning pin is provided in the mounting hole of fast mechanism shell.
3. worm screw support construction according to claim 2, which is characterized in that the positioning pin is arranged in the butterfly spring
The upper side far from the supporting rib.
4. worm screw support construction according to any one of claims 1 to 3, which is characterized in that the of the elastic connection sleeve
Two ends are provided with gear and connect flange, and described keep off connects the side of flange and fit with the bearing, it is described keep off the other side for connecing flange and
Limiting stand terrace on the worm screw fits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610852796.2A CN106321783B (en) | 2016-09-26 | 2016-09-26 | A kind of worm screw support construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610852796.2A CN106321783B (en) | 2016-09-26 | 2016-09-26 | A kind of worm screw support construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106321783A CN106321783A (en) | 2017-01-11 |
| CN106321783B true CN106321783B (en) | 2019-04-16 |
Family
ID=57820083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610852796.2A Expired - Fee Related CN106321783B (en) | 2016-09-26 | 2016-09-26 | A kind of worm screw support construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106321783B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018207766A1 (en) * | 2018-05-17 | 2019-11-21 | Robert Bosch Gmbh | Steering gear and method for producing the steering gear |
| CN110654446A (en) * | 2018-06-29 | 2020-01-07 | 北汽福田汽车股份有限公司 | Speed reduction mechanism, electric power steering column, electric power steering and vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201428774Y (en) * | 2009-04-30 | 2010-03-24 | 比亚迪股份有限公司 | Worm wheel and worm device |
| CN101734279A (en) * | 2008-11-12 | 2010-06-16 | 万都株式会社 | Reducer of electronic power steering apparatus |
| CN102421654A (en) * | 2009-05-08 | 2012-04-18 | Zf操作系统有限公司 | Bearing system for a worm in a steering gear |
| CN102770675A (en) * | 2009-12-15 | 2012-11-07 | Zf操作系统有限公司 | Steering gear having a fixed bearing and a floating bearing for a screw pinion |
| CN203717841U (en) * | 2014-02-26 | 2014-07-16 | 安徽江淮汽车股份有限公司 | Radial clearance eliminating structure and worm and gear clearance eliminating structure |
| DE102014218303A1 (en) * | 2014-09-12 | 2016-03-17 | Schaeffler Technologies AG & Co. KG | steering gear |
-
2016
- 2016-09-26 CN CN201610852796.2A patent/CN106321783B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734279A (en) * | 2008-11-12 | 2010-06-16 | 万都株式会社 | Reducer of electronic power steering apparatus |
| CN201428774Y (en) * | 2009-04-30 | 2010-03-24 | 比亚迪股份有限公司 | Worm wheel and worm device |
| CN102421654A (en) * | 2009-05-08 | 2012-04-18 | Zf操作系统有限公司 | Bearing system for a worm in a steering gear |
| CN102770675A (en) * | 2009-12-15 | 2012-11-07 | Zf操作系统有限公司 | Steering gear having a fixed bearing and a floating bearing for a screw pinion |
| CN203717841U (en) * | 2014-02-26 | 2014-07-16 | 安徽江淮汽车股份有限公司 | Radial clearance eliminating structure and worm and gear clearance eliminating structure |
| DE102014218303A1 (en) * | 2014-09-12 | 2016-03-17 | Schaeffler Technologies AG & Co. KG | steering gear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106321783A (en) | 2017-01-11 |
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Legal Events
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: ANHUI JIANGHUAI AUTOMOBILE GROUP Corp.,Ltd. Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: ANHUI JIANGHUAI AUTOMOBILE Co.,Ltd. |
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| COR | Change of bibliographic data | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190416 |