CN210271961U - Electro-hydraulic proportional electromagnet - Google Patents
Electro-hydraulic proportional electromagnet Download PDFInfo
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- CN210271961U CN210271961U CN201921423401.2U CN201921423401U CN210271961U CN 210271961 U CN210271961 U CN 210271961U CN 201921423401 U CN201921423401 U CN 201921423401U CN 210271961 U CN210271961 U CN 210271961U
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Abstract
The utility model provides an electro-hydraulic proportional electromagnet, which comprises two T-shaped sliding bearings with flanges, a movable iron core, a mandril, a static iron core, a coil component and a yoke; the ejector rod and the movable iron core are connected into a whole through interference fit and penetrate through the two T-shaped sliding bearings with the flanges; the two T-shaped sliding bearings with the flanges are respectively arranged in corresponding holes of the yoke iron and the static iron core in an interference fit manner; the flange plate parts of the two T-shaped sliding bearings with the flanges play a role in magnetic isolation, and the movable iron core and the static iron core and the movable iron core and the yoke are isolated from corresponding positions; a working air gap is formed by a gap between the movable iron core and a flange of the T-shaped sliding bearing with the flange; the coil component is mounted in the yoke. The utility model provides a proportion electro-magnet has parts is small in quantity, compact structure, makes the degree of difficulty low, the equipment is convenient, the motion is nimble, frictional resistance is little, electromagnetic force output characteristic is good, characteristics such as excellent performance, is fit for manufacturing in batches, but wide application in the mechatronic liquid integration field.
Description
Technical Field
The patent of the utility model relates to a technical field of electro-magnet, especially an electricity liquid proportion electro-magnet.
Background
In the late 60's in the 20 world, the electro-hydraulic control technology is gradually and widely applied to various control systems, and the control core element of the electro-hydraulic control technology is an electro-hydraulic proportional electromagnet. The output electromagnetic force and the input electric signal have good linear relation, and the application range of the proportional electromagnetic valve formed by combining the electromagnetic force and the main valve is wider and wider.
Among them, the electro-hydraulic proportional control technology is widely applied in automatic transmission systems, and the requirements for precision and reliability of proportional electromagnets are extremely high. At present, the proportional electromagnet technology and products in this field are mainly mastered by overseas megahead companies, such as germany bosch-lirley, germany MSM, U.S. bog warna, japan-shin-.
At present, companies and scientific research institutions in China have developed related technology attack, but the overall technical level still has a large space for improvement. For example, in the utility model patent application No. 201210539935.8, the proportional electromagnet (see fig. 1, the arrow in fig. 1 is in the direction of the electro-hydraulic flow) has a pot-shaped stationary core, which has a relatively sharp corner, is difficult to process, is easy to collide with and cause deformation and scrap of parts, and has very weak impact deformation resistance; due to the limitation of the basin-shaped structure, the suction area is the sectional area of the static iron core, and the electromagnetic force is limited under the condition of the same external dimension; the yoke part comprises three parts of a bearing seat, a pole shoe and a yoke, a first sliding bearing is arranged in a hole of a corresponding part, and accumulated errors of the three parts can enable the bearing hole to generate larger eccentricity, so that a movable iron core generates larger eccentric electromagnetic force, the movement resistance of an electromagnet is increased, the performance of a product is reduced, eccentric wear of a bearing can be caused, and the service life of the bearing is influenced. If the eccentricity is to be reduced, the requirements for machining and assembling the three parts will be greatly increased. In addition, the yoke iron and the pole shoe are in clearance fit, and a clearance is inevitably generated at the fit position, so that the magnetic resistance of a magnetic circuit is increased, and the output force of the electromagnet is lost.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the movable iron core of the existing proportional electromagnet is easy to produce eccentricity, has large movement resistance, short service life, large difficulty in machining and manufacturing and high cost, the utility model provides an electro-hydraulic proportional electromagnet structure with excellent performance, low difficulty in machining and low cost.
For realizing the technical purpose of the utility model, the utility model discloses a technical scheme be:
the utility model provides an electric-hydraulic proportion electro-magnet, includes flanged first T shape slide bearing, flanged second T shape slide bearing, moves iron core, ejector pin, quiet iron core, coil part and yoke, yoke formula structure as an organic whole, and the cross-section of yoke is "bow font", is equipped with a plurality of and concentric holes that the size differs in the yoke, is used for installing first T shape slide bearing, coil part and quiet iron core respectively, wherein: the ejector rod is arranged in the yoke, the ejector rod and the movable iron core are connected into a whole through interference fit and penetrate through the first T-shaped sliding bearing and the second T-shaped sliding bearing, the first T-shaped sliding bearing and the second T-shaped sliding bearing are respectively installed in a concentric hole corresponding to the yoke and the static iron core through interference fit, the flange plate parts of the first T-shaped sliding bearing and the second T-shaped sliding bearing play a role in magnetic isolation and can separate the corresponding positions of the movable iron core and the static iron core as well as the movable iron core and the yoke, a working air gap is formed between flanges of the movable iron core and the second T-shaped sliding bearing, the coil part is installed in the remaining concentric hole of the yoke and is positioned on the outer rings of the movable iron core and the static iron core, a first inner groove with a V-shaped structure is arranged in the right side of the static iron core, and the left side of the movable iron core can extend into the first inner groove, and a conical surface portion spaced from the first inner recess.
Further, the yoke is made of soft magnetic materials.
Furthermore, the cross-sectional shapes of the first T-shaped sliding bearing and the second T-shaped sliding bearing are both T-shaped, the first T-shaped sliding bearing and the second T-shaped sliding bearing are both made of nonmetal, and the bearings matched with the ejector rod of the first T-shaped sliding bearing and the second T-shaped sliding bearing have self-lubricating characteristics, extremely low friction coefficients and longer service life.
Furthermore, the static iron core is made of soft magnetic materials.
Further, the ejector rod is cylindrical and made of a non-magnetic material; the ejector rod is matched with corresponding holes on the first T-shaped sliding bearing and the second T-shaped sliding bearing to do linear or rotary motion; the surface of the ejector rod is subjected to strengthening treatment, the ejector rod can be made of austenitic stainless steel, and the surface of the ejector rod is subjected to strengthening treatment, so that the service life of the ejector rod is extremely long.
The utility model provides an electro-hydraulic proportional electromagnet, because its whole actuation area adopts the toper structure, quiet iron core is "V" shape structure, consequently can avoid the production of sharp limit, has improved product shock resistance; in addition, the movable iron core adopts the matching of the conical surface and the static iron core with a V-shaped structure, and finally the whole attraction area is the surface area of the conical surface, so that the electromagnetic force is amplified; in addition, the yoke iron in the structure is a complete part, the eccentric generation is avoided from the design, and the magnetic circuit reluctance is greatly reduced, the practical implementation effect shows that the service life, the impact resistance, the friction force, the electromagnetic force and other properties of the electromagnet of the utility model are greatly improved compared with the prior art proportional electromagnet, the manufacturing difficulty and the production cost are greatly reduced, and finally the problems of eccentricity, large movement resistance, short service life, large processing and manufacturing difficulty and high cost can be solved, thereby realizing the advantages of excellent performance, low processing difficulty and low cost, having the characteristics of small number of parts, compact structure, low manufacturing difficulty, convenient assembly, flexible movement, small friction resistance, good electromagnetic force output characteristic, excellent performance and the like, being particularly suitable for mass manufacturing, being widely applied to the field of electromechanical liquid integration, being particularly suitable for a hydraulic system needing precise control, such as solenoid valves and hydraulic modules of automatic transmissions.
Drawings
FIG. 1 is a schematic diagram of an electro-hydraulic proportional electromagnet in the prior art;
fig. 2 is a schematic structural diagram of an electro-hydraulic proportional electromagnet in this embodiment 1;
fig. 3 is a schematic diagram of the attraction area of the electro-hydraulic proportional electromagnet in embodiment 1.
Wherein: 1-a yoke; 2A-a first T-shaped sliding bearing; 2B-a second T-shaped sliding bearing; 3-a coil component; 4-a movable iron core; 5-a top rod; 6-static iron core; 1-1-concentric bore; 6-1-a first inner groove; 4-1-conical surface part.
Detailed Description
Example 1:
as shown in fig. 2 and fig. 3, the electro-hydraulic proportional electromagnet according to the present embodiment includes a first T-shaped sliding bearing 2A with a flange, a second T-shaped sliding bearing 2B with a flange, a movable iron core 4, a push rod 5, a stationary iron core 6, a coil component 3, and a yoke 1, where the yoke 1 is of an integral structure, the cross section of the yoke 1 is "bow-shaped", and a plurality of concentric holes 1-1 with different sizes are provided in the yoke 1, and are respectively used for installing the first T-shaped sliding bearing 2A, the coil component 3, and the stationary iron core 6, where: the ejector rod 5 is arranged in the yoke 1, the ejector rod 5 and the movable iron core 4 are connected into a whole through interference fit and penetrate through the first T-shaped sliding bearing 2A and the second T-shaped sliding bearing 2B, the first T-shaped sliding bearing 2A and the second T-shaped sliding bearing 2B are respectively installed in one concentric hole 1-1 corresponding to the yoke 1 and the static iron core 6 through interference fit, the flange parts of the first T-shaped sliding bearing 2A and the second T-shaped sliding bearing 2B play a role in magnetic isolation and can isolate the movable iron core 4 from the static iron core 6 and the corresponding positions of the movable iron core 4 and the yoke 1, a gap between flanges of the movable iron core 4 and the second T-shaped sliding bearing 2B forms a working air gap, the coil part 3 is installed in the remaining one concentric hole 1-1 of the yoke 1 and is positioned on the outer ring of the movable iron core 4 and the static iron core 6, the right side of the static iron core 6 is internally provided with a first inner groove 6-1 with a V-shaped structure, and the left side of the movable iron core 4 is provided with a conical surface part 4-1 which can extend into the first inner groove 6-1 and has a distance with the first inner groove 6-1.
Further, the yoke 1 is made of a soft magnetic material.
Further, the cross-sectional shapes of the first T-shaped sliding bearing 2A and the second T-shaped sliding bearing 2B are both T-shaped, the first T-shaped sliding bearing 2A and the second T-shaped sliding bearing 2B are both made of nonmetal, and the bearings matched with the ejector rod of the first T-shaped sliding bearing 2A and the second T-shaped sliding bearing 2B have self-lubricating characteristics, extremely low friction coefficient and longer service life.
Further, the coil component 3 is composed of a coil frame composed of an electric terminal and a non-magnetic material, and an enameled wire wound on the coil frame.
Further, the static iron core 6 is made of soft magnetic materials.
Further, the ejector rod 5 is cylindrical and made of a non-magnetic material; the ejector rod 5 is matched with corresponding holes on the first T-shaped sliding bearing 2A and the second T-shaped sliding bearing 2B to do linear or rotary motion; the surface of the ejector rod 5 is subjected to strengthening treatment, the ejector rod 5 can be made of austenitic stainless steel, and the service life of the ejector rod is extremely long by performing strengthening treatment on the surface of the ejector rod.
In this embodiment, the proportion electromagnet is created by the present invention, and the output force FIThe relationship with the current I is:
FI＝KI×I
wherein, FI-electromagnetic attraction (varying with current)
I-Current value (controllable input quantity)
KIScale factor (constant after structure determination)
Wherein, KIIn proportion to the suction area S, the following formula can be obtained:
FI∝S×I
to the proportion electro-magnet, its actuation area sees that figure 3 shows, and the formula that corresponds is as follows:
in the conventional proportional electromagnet in fig. 1, the suction area is as follows:
therefore, the difference between the two is:
is apparent S1Greater than S2Therefore, the electro-hydraulic proportional electromagnet of the present invention is larger than the proportional electromagnet in the prior art represented by the attached drawing 1, and therefore, through the above structural design, because the whole attraction area adopts the tapered structure, and the static iron core 6 is of the "V" shaped structure, the generation of sharp edges can be avoided, and the shock resistance of the product is improved; in addition, the movable iron core adopts the matching of the conical surface and the static iron core 6 with a V-shaped structure, and finally the whole attraction area is the surface area of the conical surface, so that the electromagnetic force is amplified; in addition, the yoke iron in the structure is a complete part, the eccentric generation is avoided from the design, and the magnetic circuit reluctance is greatly reduced, the practical implementation effect shows that the service life, the impact resistance, the friction force, the electromagnetic force and other properties of the electromagnet of the utility model are greatly improved compared with the prior art proportional electromagnet, the manufacturing difficulty and the production cost are greatly reduced, and finally the problems of eccentricity, large movement resistance, short service life, large processing and manufacturing difficulty and high cost can be solved, thereby realizing the advantages of excellent performance, low processing difficulty and low cost, having the characteristics of small number of parts, compact structure, low manufacturing difficulty, convenient assembly, flexible movement, small friction resistance, good electromagnetic force output characteristic, excellent performance and the like, being particularly suitable for mass manufacturing, being widely applied to the field of electromechanical liquid integration, being particularly suitable for a hydraulic system needing precise control, such as solenoid valves and hydraulic modules of automatic transmissions.
Therefore, practical application shows that the proportional electromagnet has high sensitivity (small friction force and small moving part mass), long service life and pollution resistance, and is suitable for various hydraulic systems needing accurate pressure control.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. An electro-hydraulic proportional electromagnet is characterized in that: electro-hydraulic proportion electro-magnet includes flanged first T shape slide bearing (2A), flanged second T shape slide bearing (2B), moves iron core (4), ejector pin (5), quiet iron core (6), coil part (3) and yoke (1), yoke (1) formula structure as an organic whole, and the cross-section of yoke (1) is "bow font", is equipped with a plurality of and concentric holes (1-1) that the size differs in yoke (1), is used for installing first T shape slide bearing (2A), coil part (3) and quiet iron core (6) respectively, wherein: the ejector rod (5) is arranged in the yoke (1), the ejector rod (5) and the movable iron core (4) are connected into a whole in an interference fit mode and penetrate through the first T-shaped sliding bearing (2A) and the second T-shaped sliding bearing (2B), the first T-shaped sliding bearing (2A) and the second T-shaped sliding bearing (2B) are installed in one concentric hole (1-1) corresponding to the yoke (1) and the static iron core (6) in an interference fit mode respectively, the flange portions of the first T-shaped sliding bearing (2A) and the second T-shaped sliding bearing (2B) play a role in magnetic isolation, the movable iron core (4) and the static iron core (6) and the movable iron core (4) and the yoke (1) can be isolated from each other at corresponding positions, a working air gap is formed between the flanges of the movable iron core (4) and the second T-shaped sliding bearing (2B), and the yoke piece (3) is installed in the remaining one concentric hole (1-1) of the yoke (1) and located in the movable coil portion The outer loop of iron core (4) and quiet iron core (6), quiet iron core (6) right side in be equipped with first inner groovy (6-1) of "V" shape structure, the left side of moving iron core (4) is equipped with and can stretches into in first inner groovy (6-1) to there is conical surface portion (4-1) of interval with first inner groovy (6-1).
2. An electro-hydraulic proportional electromagnet as claimed in claim 1, wherein: the yoke (1) is made of soft magnetic materials.
3. An electro-hydraulic proportional electromagnet as claimed in claim 1 or claim 2, wherein: the cross-sectional shapes of the first T-shaped sliding bearing (2A) and the second T-shaped sliding bearing (2B) are both T-shaped, and the first T-shaped sliding bearing and the second T-shaped sliding bearing are both made of nonmetal.
4. An electro-hydraulic proportional electromagnet as claimed in claim 1 or claim 2, wherein: the static iron core (6) is made of soft magnetic materials.
5. An electro-hydraulic proportional electromagnet as claimed in claim 1 or claim 2, wherein: the ejector rod (5) is cylindrical and is made of a non-magnetic material; the ejector rod (5) is matched with corresponding holes on the first T-shaped sliding bearing (2A) and the second T-shaped sliding bearing (2B) to do linear or rotary motion; the surface of the ejector rod (5) is subjected to strengthening treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921423401.2U CN210271961U (en) | 2019-08-29 | 2019-08-29 | Electro-hydraulic proportional electromagnet |
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| CN201921423401.2U CN210271961U (en) | 2019-08-29 | 2019-08-29 | Electro-hydraulic proportional electromagnet |
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| CN210271961U true CN210271961U (en) | 2020-04-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110428950A (en) * | 2019-08-29 | 2019-11-08 | 宁波精益飞达轴业有限公司 | A kind of electric-hydraulic proportion electromagnet |
| CN114877103A (en) * | 2022-07-08 | 2022-08-09 | 星宇电子(宁波)有限公司 | High-voltage electric proportional valve |
-
2019
- 2019-08-29 CN CN201921423401.2U patent/CN210271961U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110428950A (en) * | 2019-08-29 | 2019-11-08 | 宁波精益飞达轴业有限公司 | A kind of electric-hydraulic proportion electromagnet |
| CN114877103A (en) * | 2022-07-08 | 2022-08-09 | 星宇电子(宁波)有限公司 | High-voltage electric proportional valve |
| CN114877103B (en) * | 2022-07-08 | 2022-10-21 | 星宇电子(宁波)有限公司 | High-voltage electric proportional valve |
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Address after: No. 199, Shengyuan Road, economic development zone, Fenghua District, Ningbo City, Zhejiang Province Co-patentee after: Chen Libo Patentee after: Zhejiang Feida lean Precision Manufacturing Co.,Ltd. Address before: 315500 No. 8, Macheng Road, Fenghua District, Zhejiang, Ningbo Co-patentee before: Chen Libo Patentee before: NINGBO PRECISION SHAFT Co.,Ltd. |