CN210592111U - Light integrated electric steering power assisting device shell - Google Patents
Light integrated electric steering power assisting device shell Download PDFInfo
- Publication number
- CN210592111U CN210592111U CN201921155954.4U CN201921155954U CN210592111U CN 210592111 U CN210592111 U CN 210592111U CN 201921155954 U CN201921155954 U CN 201921155954U CN 210592111 U CN210592111 U CN 210592111U
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- 238000009434 installation Methods 0.000 claims abstract description 41
- 230000009467 reduction Effects 0.000 claims abstract description 13
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 8
- 230000010354 integration Effects 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims abstract 2
- 229910001018 Cast iron Inorganic materials 0.000 claims description 5
- 230000003134 recirculating effect Effects 0.000 abstract description 9
- 238000005266 casting Methods 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 230000007704 transition Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- Power Steering Mechanism (AREA)
Abstract
The utility model relates to an electronic device field that turns to discloses a light-duty integration electric power steering booster unit casing, it is including the first casing that is used for installing recirculating ball speed reduction structure and the second casing that is used for installing the worm, first casing and second casing integrated into one piece, integrated into one piece has the next door in the first casing, the next door becomes the first installation room that one side is used for installing the worm wheel with the space separation in the first casing and the second installation room that the opposite side is used for installing recirculating ball speed reduction subassembly, the casing is the light metal casing, offer on the casing and be used for fixing the installation through-hole on the vehicle with the casing, the radial extension of first casing is followed to the installation through-hole. The shell of the recirculating ball electric steering device is cast by using an aluminum alloy material, so that the weight of the assembly is reduced, and the defect that the aluminum alloy shell has poor strength and cannot bear large torque is reduced by designing the structure of the mounting through hole, so that the capability of replacing iron castings is realized.
Description
Technical Field
The utility model relates to an electric power steering device field has especially related to a light-duty integration electric power steering power assisting device casing.
Background
The non-independent suspension type commercial vehicle continuously adopts the recirculating ball type electric steering device which is provided with a worm gear and worm and a recirculating ball two-stage speed reducing mechanism, and the electric motor amplifies the hand force of the steering wheel through the two-stage speed reducing mechanism, thereby playing the boosting effect. The original device adopts a split structure, a worm gear and worm speed reduction part and a circulating ball speed reduction part are arranged, and then the shells of the two speed reduction mechanisms are connected into a whole through bolts or adjusting nuts, so that the size of the device is increased, the weight of the device becomes heavy, the shafting is not accurately positioned, and a gap needs to be adjusted during assembly, thereby affecting the assembly efficiency and the effect.
In addition, a nut, a bearing, a worm wheel and a sensor are required to be arranged on one circulating ball screw, high positioning accuracy is required for the nut, the bearing, the worm wheel and the sensor, the worm is arranged on the shell, if the shell is not a whole, the shell is not formed by one-time clamping and processing, and the assembling accuracy is difficult to ensure by adjusting the gap during assembling, so that the product quality, the reliability and the service life are reduced, and the circulating ball screw has high practicability.
Chinese patent 2018214061428 provides a technical solution of an integrated housing, which can be integrally installed, but cannot satisfy the requirement of light weight design, and the whole housing occupies a large space. And the cast iron shell adopted by the common shell is heavier, so that a large amount of energy is consumed during casting, and the finished product also needs paint spraying operation for rust prevention, thereby causing pollution and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it is great according to current casing weight, can not satisfy the lightweight demand to and the shortcoming of polluted environment, provide a light-duty integration electric power steering device casing.
In order to solve the technical problem, the utility model discloses a following technical scheme can solve:
the utility model provides a light-duty integration electric power steering device casing, including the first casing that is used for installing circulation ball speed reduction structure and the second casing that is used for installing the worm, first casing and second casing integrated into one piece, integrated into one piece has the next door in the first casing, the next door separates into the space in the first casing and is used for installing the first installation room of worm wheel and the second installation room that the opposite side is used for installing circulation ball speed reduction subassembly in one side, the casing is the light metal casing that density ratio cast iron is little, offer on the casing and be used for fixing the installation through-hole on the vehicle with the casing, the radial extension of first casing is followed to the installation through-hole. Adopt light metal casing, can very big lighten the quality of casing to can realize the lightweight, the space that the installation through-hole that sets up through on the casing can the at utmost reduces the casing moreover.
Preferably, the shell is an aluminum alloy shell; and the chamber in the second shell is communicated with the first mounting chamber to form a space for mounting the worm and gear structure. The aluminum alloy shell has the advantages of light weight, less pollution and corrosion resistance.
Preferably, the first housing has a lug extending outwards from a circumferential side thereof, the lug is integrally formed with the first housing, and each lug penetrates through at least one mounting through hole. The ear mount can improve the overall strength of the housing, thereby providing sufficient support for the fixing member when passing through the mounting through hole.
Preferably, the number of the mounting through holes is not less than three, and the mounting through holes form a polygon with each other.
Preferably, the mounting through-holes are light holes. The unthreaded hole is convenient for machine-shaping, makes things convenient for the installation of mounting simultaneously.
Preferably, the first shell comprises a third shell and a fourth shell, the fourth shell is provided with a sector assembly mounting port, one end of the third shell is a circulating ball speed reduction assembly mounting port, the other end of the third shell is a worm gear mounting port, an ear seat provided with a mounting through hole is integrally formed on the upper side of the outer side surface of the third shell, and an ear seat provided with a mounting through hole is integrally formed on the lower side of the fourth shell. Through the design of the position of the mounting through hole, the torque generated by the electric power steering device during steering is dispersed, and the damage to the shell is reduced.
Preferably, the length of the mounting through hole provided on the third casing is not less than the length of the mounting through hole provided on the fourth casing.
Preferably, the length of the mounting through hole on the upper side of the third housing is not less than the length of the mounting through hole provided on the fourth housing; the length of the mounting through hole is smaller than or equal to the maximum outer diameter of the third shell.
The utility model discloses owing to adopted above technical scheme, have apparent technological effect:
the casing utilize aluminum alloy material casting circulation ball electric steering device's casing, reduce the weight of assembly, through the design to the installation through-hole structure, reduced aluminum alloy housing intensity relatively poor defect that can not bear great moment of torsion moreover to realize the ability of replacement ironcasting. And the integrated shell reduces the assembly error, improves the assembly precision, is very convenient in the assembly process, does not need to adjust the clearance, and ensures the assembly precision and the assembly efficiency. The shell can be suitable for commercial vehicles with different tonnages.
Drawings
FIG. 1 is a front view of the housing;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view of FIG. 2B-B;
FIG. 4 is a schematic structural view of example 2;
FIG. 5 is a cross-sectional view of FIG. 2C-C;
fig. 6 is an assembly schematic view of the housing of embodiment 3.
Reference numerals in the drawings correspond to the following technical names: 1-first shell, 2-second shell, 3-next door, 4-first installation room, 5-second installation room, 6-installation through hole, 7-ear seat, 8-third shell, 9-fourth shell, 10-sector component installation opening, 11-ball-circulation speed-reduction component installation opening, 12-worm wheel installation opening, 13-fixed plate, 14-installation channel, 15-transition plate, 16-connecting hole and 17-bolt.
Detailed Description
Example 1
As shown in fig. 1 to 3 and 5, the present embodiment provides a light-weight integrated electric power steering apparatus housing, including a first housing 1 for mounting a recirculating ball decelerating structure and a second housing 2 for mounting a worm, the first housing 1 and the second housing 2 are integrally formed, a partition wall 3 is integrally formed in the first housing 1, the partition wall 3 divides a space in the first housing 1 into a first mounting chamber 4 for mounting a worm wheel on one side and a second mounting chamber 5 for mounting a recirculating ball decelerating assembly on the other side, the housing is a light metal housing with a density smaller than cast iron, a mounting through hole 6 for fixing the housing on a vehicle is formed in the housing, and the mounting through hole 6 extends in a radial direction of the first housing 1. And the middle part of the partition wall 3 is provided with a mounting channel 14 for the screw rod in the circulating ball speed reducing assembly to penetrate out.
The shell provided by the embodiment is an aluminum alloy shell; the chamber in the second housing 2 communicates with the first mounting chamber 4 to form a space for mounting the worm gear structure. Compared with the traditional shell installation, the technical scheme provided by the invention saves the use of the installation seat, the fixed seat is provided by outwards extending the lug seats 7 on the circumferential side surface of the first shell 1, the lug seats 7 and the first shell 1 are integrally formed, each lug seat 7 at least penetrates through one installation through hole 6, and in the embodiment, each lug seat 7 penetrates through one installation through hole 6. For the convenience of installation, the outlet ends of all the installation through holes 6 are in the same plane, and the outlet end is one end close to the vehicle installation beam. The number of the mounting through holes 6 is 4, and the mounting through holes form a quadrangle with each other, but the number of the mounting through holes 6 may be replaced with any number in the present embodiment.
The ear piece 7 in this embodiment is used as a reinforcement, so the mounting through-hole 6 does not communicate with the chamber in the housing, and the mounting through-hole 6 is a light hole.
The first casing 1 comprises a cylindrical third casing 8 and a cylindrical fourth casing 9 extending radially along the circumferential side of the cylindrical casing, and it is obvious that the chambers in the third casing 8 and the fourth casing 9 are communicated, and the third casing 8 and the fourth casing 9 are integrally formed. The sector component mounting port 10 is formed in the fourth shell 9, the one end of the third shell 8 is a recirculating ball decelerating component mounting port 11, the other end of the third shell is a worm wheel mounting port 12, the ear seat 7 provided with the mounting through hole 6 is integrally formed on the upper side of the outer side face of the third shell 8, and the ear seat 7 provided with the mounting through hole 6 is integrally formed on the lower side of the fourth shell 9. In this embodiment, two lug seats 7 are arranged at one end of the upper end of the third shell 8, which is far away from the fourth shell 9, each lug seat 7 is provided with a mounting through hole 6 which penetrates through the lug seat 7, and in this embodiment, the lug seat 7 on the third shell 8 is positioned between the worm wheel mounting port 12 and the recirculating ball nut component mounting port; the one end that third casing 8 was kept away from to the lower extreme of fourth casing 9 is provided with two ear seats 7, and every ear seat 7 has all seted up one and has run through the installation through-hole 6 of ear seat 7. In general, the mounting through-holes 6 of the third and fourth housings 8 and 9 are formed in a quadrangular shape with each other.
The length of the mounting through hole 6 on the upper side of the third shell 8 is not less than that of the mounting through hole 6 on the lower side of the fourth shell 9, and the length of the mounting through hole 6 on the upper side of the third shell 8 is not less than that of the mounting through hole 6 arranged on the fourth shell 9; the length of the mounting through hole 6 is equal to or less than the maximum outer diameter of the third housing 8. This is to provide a larger support surface for the housing and a longer mounting through hole 6 to provide a larger contact surface for the mounting member when mounted, thereby improving the strength of the housing.
In the present embodiment, the lengths of the mounting through holes 6 are the same and smaller than the maximum outer diameter dimension of the third housing 8; and a reinforcing rib is formed between the outer walls of the fourth shell 9 and the third shell 8. The length of the mounting through hole 6 is between 10mm and 100mm, and in the embodiment, the length of the mounting through hole 6 is 70 mm.
In order to save space and facilitate the installation of the sector assembly, the two installation through holes 6 are positioned above the installation opening 10 of the sector assembly, and the two installation openings are arranged at the lower side of the installation opening 10 of the sector assembly.
When mounting, the components of the electric power steering apparatus are assembled into the housing, and then the housing is fixed to the vehicle by passing the bolts 17 through the mounting through-holes 6.
Example 2
As shown in fig. 1 to 5, the present embodiment is different from embodiment 1 in that: the thickness of the ear seat 7 located on the lower side of the sector assembly mounting port 10 is smaller than the thickness of the ear seat 7 on the upper side of the first housing 1. This kind of structure is applicable to the less commercial car of motorcycle type, and the circulation ball speed reduction subassembly is also less at the less burden that causes the casing of during operation moment of torsion, and the reason of the 6 thickness of the big or small downside ear seats of the thickness of upside ear seat 6 is because the ear seat 6 of upside is close to circulation ball speed reduction subassembly more, compares in 6 needs bigger holding power of the ear seat of downside. The length of the upper mounting through-hole 6 is 70mm, and the length of the lower mounting through-hole 6 is 30 mm.
Example 3
The embodiment is different from embodiment 1 in that: the length of the mounting through-hole 6 is 100 mm.
Example 4
As shown in fig. 1 to 6, the present embodiment is different from embodiment 2 in that: when a large torque is needed or the inner wall of the shell is designed to be thin and cannot meet the torque requirement, a transition plate 15 is provided during installation, the transition plate 15 comprises connecting holes 16 corresponding to the installation through holes 6 one to one, the transition plate 15 is made of cast iron, and bolts 17 sequentially penetrate through the installation through holes 6 in the shell and the connecting holes 16 in the transition plate 15 and then fix the transition plate 15 and the shell on a girder of a vehicle.
Example 5
The embodiment is different from embodiment 1 in that: the circumference side of the first casing 1 of this embodiment sets up ear seat 6, through the outside at third casing 8 extension fixed plate 13, makes installation through-hole 6 offer and forms mounting structure on fixed plate 13, and the structure that adopts fixed plate 13 in embodiment 1/2/3 can design the fixed plate 13 of different structures according to self needs relatively to reach the mesh of supporting, the structure is more diversified.
Example 6
The present embodiment provides an electric power steering apparatus including the housing of embodiment 1, embodiment 2, embodiment 3, or embodiment 4.
Example 7
The embodiment is different from embodiment 1 in that: every installation through-hole 6 is that 2 through-hole sections that lie in same straight line constitute, does not set up ear seat 6 between the through-hole section, and the length of ear seat 6 can further be practiced thrift to this kind of structure, and weight reduction is fit for the less steering gear of some load demands.
In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a light-duty integration electric power steering booster unit casing which characterized in that: including first casing (1) that is used for installing circulation ball speed reduction structure and second casing (2) that are used for installing the worm, first casing (1) and second casing (2) integrated into one piece, integrated into one piece has next door (3) in first casing (1), next door (3) become the space separation in first casing (1) and be used for installing first installation room (4) of worm wheel and second installation room (5) that the opposite side is used for installing circulation ball speed reduction subassembly in one side, its characterized in that: the casing is the light metal casing that density is less than cast iron, offers on the casing to be used for fixing the casing on the vehicle installation through-hole (6), and installation through-hole (6) are along the radial extension of first casing (1).
2. A lightweight integrated electric power steering apparatus housing as set forth in claim 1, wherein: the shell is an aluminum alloy shell; the chamber in the second shell (2) is communicated with the first mounting chamber (4) to form a space for mounting the worm and gear structure.
3. A lightweight integrated electric power steering apparatus housing as set forth in claim 1, wherein: the circumferential side face of the first shell (1) is outwardly extended with an ear seat (7), the ear seat (7) and the first shell (1) are integrally formed, and each ear seat (7) at least penetrates through one installation through hole (6).
4. A lightweight integrated electric power steering apparatus housing as set forth in claim 1, wherein: the number of the mounting through holes (6) is not less than three, and polygons are formed among the mounting through holes.
5. A lightweight integrated electric power steering apparatus housing as set forth in claim 1, wherein: the mounting through hole (6) is not communicated with the cavity in the shell, and the mounting through hole (6) is a unthreaded hole.
6. A lightweight integrated electric power steering apparatus housing as set forth in claim 1, wherein: first casing (1) includes third casing (8) and fourth casing (9), has seted up sector subassembly installing port (10) on fourth casing (9), and the one end of third casing (8) is circulation ball speed reduction unit mount mouth (11), and the other end is worm wheel installing port (12), and the upside integrated into one piece of third casing (8) lateral surface has ear seat (7) of seting up mounting hole (6), and the downside integrated into one piece of fourth casing (9) has ear seat (7) of seting up mounting hole (6).
7. The lightweight integrated electric power steering apparatus casing of claim 6, wherein: the length of the mounting through hole (6) on the upper side of the third shell (8) is not less than that of the mounting through hole (6) on the lower side of the fourth shell (9).
8. A lightweight integrated electric power steering apparatus housing as set forth in claim 7, wherein: the length of the mounting through hole (6) on the upper side of the third shell (8) is not less than that of the mounting through hole (6) arranged on the fourth shell (9); the length of the mounting through hole (6) is less than or equal to the maximum outer diameter of the third shell (8).
9. A lightweight integrated electric power steering apparatus housing as set forth in claim 1, wherein: the length of the mounting through hole (6) is between 10mm and 100 mm.
10. A lightweight integrated electric power steering apparatus housing as set forth in claim 1, wherein: each mounting through hole (6) is a continuous through hole or consists of a plurality of through hole sections on the same axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921155954.4U CN210592111U (en) | 2019-07-22 | 2019-07-22 | Light integrated electric steering power assisting device shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921155954.4U CN210592111U (en) | 2019-07-22 | 2019-07-22 | Light integrated electric steering power assisting device shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210592111U true CN210592111U (en) | 2020-05-22 |
Family
ID=70689027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921155954.4U Active CN210592111U (en) | 2019-07-22 | 2019-07-22 | Light integrated electric steering power assisting device shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210592111U (en) |
-
2019
- 2019-07-22 CN CN201921155954.4U patent/CN210592111U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 1 Junlian Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province, 311835 Patentee after: Zhejiang Wan'an Zhiqu Automotive Electronic Technology Co.,Ltd. Country or region after: China Address before: 311835 Wan'an Science and Technology Park, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG VIE PUMP-MANU Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |