CN114962485A - Inner plunger of electromagnetic valve assembly for clutch of automobile differential mechanism and manufacturing method thereof - Google Patents
Inner plunger of electromagnetic valve assembly for clutch of automobile differential mechanism and manufacturing method thereof Download PDFInfo
- Publication number
- CN114962485A CN114962485A CN202110200376.7A CN202110200376A CN114962485A CN 114962485 A CN114962485 A CN 114962485A CN 202110200376 A CN202110200376 A CN 202110200376A CN 114962485 A CN114962485 A CN 114962485A
- Authority
- CN
- China
- Prior art keywords
- plunger
- clutch
- valve assembly
- ring
- synthetic resin
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 title claims description 4
- 229920003002 synthetic resin Polymers 0.000 claims description 18
- 239000000057 synthetic resin Substances 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
Images
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
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/14—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
-
- 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
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H48/34—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using electromagnetic or electric actuators
-
- 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
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D2027/008—Details relating to the magnetic circuit, or to the shape of the clutch parts to achieve a certain magnetic path
Abstract
An inner plunger of an electromagnetic valve assembly for a clutch of an automobile differential and a manufacturing method thereof. The invention provides an inner plunger of an electromagnetic valve assembly for a clutch of an automobile differential, which contributes to light weight and cost saving of the electromagnetic valve assembly, diversifies the shape of the inner plunger, reduces friction force with an inner shell and improves functions.
Description
Technical Field
The present invention relates to an inner plunger of a coil assembly of a solenoid valve for a clutch of an automobile differential and a method for manufacturing the same, and more particularly, to an inner plunger which improves quality and productivity of an inner plunger constituting a solenoid valve assembly for a clutch and realizes weight reduction, and a method for manufacturing the same.
Background
As is well known, a differential gear of an automobile distributes the driving force of an engine differentially according to the resistance of wheels on both sides, and a differential case (differential case) is rotatably provided inside a carrier, and the differential case is configured by a spider (spyder) having a pinion (pinon) and a side gear (side gear) engaged with both sides of the pinion, and the side gear and a hub (hub) of the wheel are connected by a drive shaft (drive draft), thereby transmitting the engine power.
In the differential gear of an automobile performing the above-described function, the electromagnetic valve assembly (solenoid assembly) performing the function of operating the clutch (clutch) functions to connect or disconnect the differential lock device by operating the outer plunger (out plunger) and the Inner plunger (Inner plunger) or the piston (piston) by using the magnetic force generated by the coil assembly inside.
In the case of explaining the structure of the inner plunger constituting the clutch solenoid valve assembly of the differential gear performing the above-described operation, the inner ring of the inner plunger closely coupled to the inner casing is made of stainless steel so as to move without being affected by magnetic force, and the outer ring is made of magnetic metal for forming electromagnetic force of the coil.
As described above, in order to form a magnetic force on the outer wheel without generating a magnetic force on the inner wheel, two kinds of metals having different materials are integrally formed, and the two kinds of metals are welded to each other by this method, or precision machining is required by precision machining processes of respective steps, and thus, there is a disadvantage that the manufacturing cost is high accordingly.
In particular, the inner and outer wheels of the inner plunger are entirely made of metal, and are very heavy.
Therefore, there is a disadvantage that the function of the solenoid valve assembly is reduced, contrary to the reduction of the weight of the automobile, and in the case of stainless steel, there are a lot of problems in the structure of the inner plunger such as the shape of the inner plunger, which is restricted due to the poor formability.
Documents of the prior art
Patent document
Korean laid-open patent No. 10-1983-0003671 (published: 06 month-22 days 1983)
Korean registered patent No. 10-1660641 (2016, 09 month, 21 day, registration)
Disclosure of Invention
Technical problems to be solved by the invention
In order to solve the above problems, an object of the present invention is to provide an inner plunger for a clutch solenoid assembly of an automobile differential, which contributes to weight reduction and cost saving of the solenoid assembly, diversifies the shape of the inner plunger, and enhances the function of the solenoid assembly by reducing the frictional force with an inner case.
Means for solving the problems
In order to achieve the above object, an inner plunger of a solenoid valve assembly for an automobile differential clutch according to the present invention is composed of an outer ring coupled to the inner plunger of a bobbin constituting the solenoid valve assembly and an inner ring coupled to an inner case.
The inner race of the plunger inner having the above-described configuration is molded from an insulating synthetic resin having excellent moldability, and a magnetic metal is inserted into an outer edge of the inner race made of the synthetic resin constituting the plunger inner to form the outer race.
An undercut groove is formed on the entire inner race so that friction with the inner race made of the synthetic resin is reduced.
A method for manufacturing an inner plunger of a solenoid valve assembly for a clutch includes a die having a space for inserting an outer ring of the inner plunger and a space for forming an inner ring, and a core having an undercut groove forming portion for reducing friction with an inner shell so that an undercut groove is formed on the entire inner surface of the inner ring.
In the mold thus configured, the outer ring made of a magnetic metal is provided in a space for the outer ring of the insert plunger, the core having the undercut groove forming portion is coupled to the middle of the mold, and the inner ring is formed of a non-magnetic synthetic resin by injection molding, whereby the inner plunger is manufactured.
ADVANTAGEOUS EFFECTS OF INVENTION
As described above, according to the present invention, the inner ring of the inner plunger constituting the solenoid valve assembly is made of synthetic resin, and the outer ring is made of magnetic metal, thereby improving the productivity of the solenoid valve assembly and promoting cost saving.
Further, the electromagnetic valve assembly can be formed in various shapes of the inner plunger, and can be reduced in weight to reduce the frictional force with the inner housing, thereby improving the quality of the electromagnetic valve assembly.
Drawings
Fig. 1 is a perspective view showing the structure of an inner plunger according to the present invention;
FIG. 2 is a sectional view showing the structure of the inner plunger of the present invention;
fig. 3 is a partial sectional view showing a state where the inner plunger of the present invention is disposed;
FIG. 4 is a partial cross-sectional view showing a mold for manufacturing the plunger inner of the present invention;
fig. 5 is a partial sectional view showing a state where the inner plunger of the present invention is molded.
Description of the reference numerals
1: inner plunger
2: inner wheel
2-1 undercut groove
3, outer wheel
10 bobbin
Detailed Description
The inner plunger of the present invention and the method for manufacturing the same will be described in more detail below, and the technical idea sought by the present invention is not limited to the form described herein, but should be understood to include various modifications, equivalents, and/or substitutes (alternatives) of the embodiments of the present invention.
Furthermore, although the embodiments of the present invention have been described, it is needless to say that the effects predicted by the respective configurations will be confirmed even if the operational effects of the configurations of the present invention are not explicitly described.
The structure of the inner plunger of the electromagnetic valve assembly for a clutch of an automobile differential according to the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 3, an inner plunger 1 of a solenoid valve assembly for a clutch according to the present invention includes: an outer wheel 3 of the inner plunger piston, which forms an electromagnetic valve assembly and is combined with a bobbin 10 forming electromagnetic force; the inner ring 2 is integrally formed with the outer ring 3 and coupled to the inner case 20, and the inner plunger 1 configured thereby functions to reciprocate in the inner case 20 by an electromagnetic force formed in the bobbin 10.
The inner race 2 of the plunger inner 1 configured as described above is molded from an insulating synthetic resin having excellent moldability, and a magnetic metal is inserted as the outer race 3 into the outer edge of the inner race 2 made of the synthetic resin constituting the plunger inner.
As described above, the undercut groove 2-1 is formed in the entire inner wheel 2 to reduce friction with the inner case 20 when the inner wheel 2 made of synthetic resin reciprocates along the inner case 20.
Unexplained reference numeral 10-1 of the drawing refers to a coil.
The manufacturing method of the inner plunger of the electromagnetic valve assembly for the clutch is carried out by a die and insert molding.
A mold for insert molding the inner plunger will be described with reference to fig. 4 and 5.
Is composed of a die 30 and a magnetic core 40, wherein the die 30 is composed of a space 30-1 for an outer wheel 3 of an insert plunger and a space 30-2 for forming an inner wheel 2; the magnetic core 40 has an undercut groove forming portion 40-1 such that an undercut groove 2-1 is formed in the entire inner wheel 2 to reduce friction with the inner case 20.
The inner plunger is insert-molded in the mold 30 thus constructed.
First, in a mold 30, an outer ring 3 made of a magnetic metal is provided in a space 30-1 for an outer ring 3 of an insert plunger, a core 40 having an undercut groove forming portion 40-1 is coupled to the middle of the mold 30, an inner ring 2 is formed of a non-magnetic synthetic resin by synthetic resin injection, and the inner plunger 1 is manufactured by demolding.
The operation of the inner plunger of the electromagnetic valve assembly for a clutch of an automobile differential according to the present invention configured as above will be described in detail below.
First, a basic operation of the electromagnetic valve assembly for a clutch of an automobile differential will be described.
In a state of being combined with the inner case 20 mounted to the automobile differential and constituting the differential, electricity is supplied to the bobbin 10 to form electromagnetic force when the operation of the differential is required.
Accordingly, the magnetic force generated by the magnetic field generated in the bobbin 10 acts to move the inner plunger 1 along the inner housing 20.
The above-described operation is a general operation of the electromagnetic valve assembly for a clutch of an automobile differential, and a detailed description thereof will be omitted, and only an operation of the structure of the inner plunger will be described.
First, when the inner plunger 1 moves along the inner case 20 by the electromagnetic force generated by the magnetic field generated by the bobbin 10, the inner ring 2 constituting the inner plunger 1 is made of synthetic resin, thereby reducing the influence of the electromagnetic force and improving the responsiveness, thereby helping the inner plunger 1 to move along the inner case 20.
In particular, the inner race 2 is formed of a non-magnetic synthetic resin, and the undercut groove 2-1 is more simply formed on the entire inner race 2, thereby reducing friction with the inner housing 20 when reciprocating along the inner housing 20, whereby the plunger is released from frictional resistance to help function to reciprocate along the inner housing 20.
Also, the inner race 2 of the plunger inner is formed of a non-magnetic synthetic resin, and the shape of the plunger inner is diversified due to excellent moldability, thereby improving the function and productivity of the shape of the plunger inner.
The outer rim of the inner ring 2 of the inner plunger is embedded with magnetic metal to form the outer ring 3, thereby preventing mutual demoulding and keeping the shape for a long time.
Further, since the outer ring 3 is formed of a magnetic metal inserted into the outer edge of the inner ring 2 of the inner plunger, the electromagnetic force generated in the bobbin 10 is not lost, and thus the inner plunger smoothly operates.
Claims (2)
1. An inner plunger of an electromagnetic valve assembly for a clutch of an automobile differential mechanism relates to an outer wheel (3) combined with the inner plunger of a bobbin (10); an inner plunger (1) of a clutch solenoid assembly, which is constituted by an inner ring (2) integrally formed with the outer ring and coupled to an inner case (20), is characterized in that,
the inner ring (2) of the plunger inner (1) is molded of an insulating synthetic resin having excellent moldability, not only to diversify the shape of the plunger inner, but also to reduce the weight, and undercut grooves (2-1) are formed on the entire inner surface of the inner ring (2) to reduce friction with the inner shell (20) when the inner ring (2) made of the synthetic resin reciprocates along the inner shell (20),
a magnetic metal is embedded as an outer ring (3) on the outer edge of an inner ring (2) made of synthetic resin constituting the inner plunger.
2. A method for manufacturing an inner plunger of an electromagnetic valve assembly for a clutch of an automobile differential mechanism is characterized in that,
the method comprises the following steps:
preparing a mold (30) and a magnetic core (40), wherein the mold (30) is composed of a space (30-1) for an outer wheel (3) of an insert plunger and a space (30-2) for forming an inner wheel (2); the magnetic core (40) is provided with an undercut groove forming part (40-1) so that an undercut groove (2-1) is formed in the whole inner wheel (2) to reduce friction with the inner shell (20);
in a mold (30), an outer ring (3) made of magnetic metal is provided in a space (30-1) for the outer ring (3) of an insert plunger, a magnetic core (40) having an undercut groove molding section (40-1) is joined to the middle of the mold (30), and the inner ring (2) is formed of a non-magnetic synthetic resin by injection molding of the synthetic resin and is released from the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110200376.7A CN114962485A (en) | 2021-02-23 | 2021-02-23 | Inner plunger of electromagnetic valve assembly for clutch of automobile differential mechanism and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110200376.7A CN114962485A (en) | 2021-02-23 | 2021-02-23 | Inner plunger of electromagnetic valve assembly for clutch of automobile differential mechanism and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114962485A true CN114962485A (en) | 2022-08-30 |
Family
ID=82954366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110200376.7A Pending CN114962485A (en) | 2021-02-23 | 2021-02-23 | Inner plunger of electromagnetic valve assembly for clutch of automobile differential mechanism and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114962485A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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-
2021
- 2021-02-23 CN CN202110200376.7A patent/CN114962485A/en active Pending
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| US20070179008A1 (en) * | 2006-01-31 | 2007-08-02 | Gkn Driveline Torque Technology Kk | Clutch device and differential device therewith |
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