KR101660641B1 - Vehicle actuated clutches and differential devices assy - Google Patents

Vehicle actuated clutches and differential devices assy Download PDF

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Publication number
KR101660641B1
KR101660641B1 KR1020150066377A KR20150066377A KR101660641B1 KR 101660641 B1 KR101660641 B1 KR 101660641B1 KR 1020150066377 A KR1020150066377 A KR 1020150066377A KR 20150066377 A KR20150066377 A KR 20150066377A KR 101660641 B1 KR101660641 B1 KR 101660641B1
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KR
South Korea
Prior art keywords
piston
solenoid
assy
housing
clutch
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Application number
KR1020150066377A
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Korean (ko)
Inventor
최병선
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주식회사 신라공업
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Priority to KR1020150066377A priority Critical patent/KR101660641B1/en
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Publication of KR101660641B1 publication Critical patent/KR101660641B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • 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
    • F16H48/22—Arrangements for suppressing or influencing the differential action, e.g. locking devices using friction clutches or brakes
    • 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
    • F16H48/26—Arrangements for suppressing or influencing the differential action, e.g. locking devices using fluid action, e.g. viscous clutches
    • 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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H55/48—Pulleys manufactured exclusively or in part of non-metallic material, e.g. plastics

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Retarders (AREA)

Abstract

The present invention relates to a solenoid assy for a clutch of an automotive differential apparatus. The solenoid assy for a clutch of an automotive differential apparatus of the present invention is characterized in that, in order to minimize the adhesion by the oil introduced into the solenoid assy, And a piston is seated on the stopper,
In order to improve the responsiveness of the piston, an outer diameter reduction portion and a stainless steel washer are coupled to an upper portion of the piston, an undercut portion is formed inside the plate,
A plastic spacer is provided between the plate covering the housing and the sleeve inside to contact parts of the piston to prevent loss of magnetic force. To prevent malfunction due to the oil introduced into the solenoid assy, According to the present invention, the frictional force between the piston and the housing is reduced, and when the electromagnetic force is generated or extinguished by the magnetic force generated by the coil assembly, the piston is smoothly moved between the piston and the plate. The electromagnetic force can be reliably transferred between the piston and the plate, so that smooth operation can be expected.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a solenoid assy for a vehicle differential,

The present invention can reduce the loss of electromagnetic force so that the function of attaching to or disconnecting the differential gear lock device can be more completely carried out by being mounted on the clutch shaft constituting the electronic differential device of a vehicle, To a clutch solenoidassay of the device.

As is known, a differential apparatus of an automobile is configured to be able to differentially distribute a driving force of an engine in accordance with a resistance applied to both wheels. In this case, a differential case is rotatably installed inside a carrier, And a side gear engaged with both sides of the pinion. The hub side of the two side gears and the wheel are connected to a drive shaft to transmit engine power.

A solenoid assy that actuates a clutch constituting a differential device of an automobile having the above functions operates the outer flange and the inner flange or the piston by using the magnetic force generated in the coil assembly, To connect or disconnect.

The structure of the solenoid clutch for a clutch of a differential device having the above-described functions will be described. Since the piston has a cylindrical shape with a cross-sectional thickness equal to that of the piston, and the plate thickness is the same, a magnetic field generated by the coil assembly And it is disadvantageous in that it can not smoothly and intensively move to the plate and causes loss of electromagnetic force.

In addition, when the piston and the plate are brought into contact with each other over a large area, there is a disadvantage that the return force of the piston is lowered due to the result that the response is greatly reduced even in the presence of a small amount of residual magnetic force due to strong holding force.

In addition, since the housing and the sleeve constituting the solenoid assembly are formed at right angles, it is difficult to attach the sleeve to the housing, and the corner portion can not withstand the pressure input when the sleeve is press-fitted.

There is a drawback that the return force is lowered because the oil pressure difference is generated due to the non-flow of the working oil present inside the solenoid assy because there is no hole for passing the oil through the solenoid assy.

When the solenoid assy is attached to the automotive differential, there is no structure to fix the solenoid assy. Therefore, if the rotating force of the shaft constituting the differential is generated, the peripheral part is damaged by the moving phenomenon, There is a problem that the quality of Assi is greatly reduced.

Korean Patent Publication No. 10-1983-0003671 (published on June 22, 1983) Korean Patent Publication No. 10-1998-0047527 (published September 15, 1998) Korean Patent Publication No. 10-2005-0045486 (published on July 17, 2005) Korean Patent Publication No. 10-2011-0026986 (published on March 16, 2011)

The clutch solenoid assy of the automotive differential apparatus according to the present invention is intended to solve the above problems and it is an object of the present invention to reduce the frictional force between the piston and the housing and the adhesive force by the oil, And enables smooth operation of the piston when generating or extinguishing an electromagnetic force due to a magnetic force generated in a coil assembly,

It provides solenoid clutch solenoid for automotive differentials that is designed to prevent rotation of the solenoid assy and to greatly improve the return force and durability of the piston by reducing the oil pressure difference by smoothly flowing the working oil present inside. There is a purpose.

In order to achieve the above object, a clutch solenoid assy of a vehicle differential apparatus according to the present invention is characterized in that a stopper is formed at a lower portion of a bobbin in order to minimize an adhesive force due to oil introduced into a solenoid assy, ,

In order to improve the responsiveness of the piston, an outer diameter reduction portion and a stainless steel washer are coupled to an upper portion of the piston, an undercut portion is formed inside the plate,

A plastic spacer is provided between the plate covering the housing and the sleeve inside to contact parts of the piston to prevent loss of magnetic force. To prevent malfunction due to the oil introduced into the solenoid assy, It is a feature of the present invention that the housing is provided with a fixing pin for prevention of rotation with the hole.

According to the present invention, the frictional force between the piston and the housing can be reduced, and when the electromagnetic force generated by the magnetic force generated by the coil assembly is generated or extinguished, the piston can respond smoothly between the plate and the plate, The electromagnetic force can be reliably prevented from being lost between the piston and the plate,

The rotation prevention of the solenoid assy and the piston are not influenced by the initial oil adhesion force, the flow of the working oil present inside is smoothly performed, and the oil pressure difference is reduced, thereby greatly improving the return force and durability of the piston .

Fig. 1 is a perspective view showing the entire configuration of a solenoidassay
Fig. 2 is a sectional view showing the state before the solenoid assembly is operated
Figure 3 is a cross-sectional view of the solenoidassay
Fig. 4 is a cross-sectional view of a portion A of Fig. 2 which is a main part of the present invention
FIG. 5 is a graph showing the magnetic flux flow chart of the solenoidassay according to the present invention

The structure of a clutch solenoid assembly of an automotive differential apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

The clutch solenoid assembly of the automotive differential apparatus includes a housing 11 in which a coil assembly 10 and a piston 1 are loaded, a plate 12 covering the housing 11, And a space 14 is formed between the sleeve 13 and the sleeve 13. In constructing the clutch solenoid assembly of the automotive differential apparatus,

A stopper 16 is formed at a lower portion of the bobbin 15 to minimize the adhesive force of the oil introduced into the solenoid assembly and the piston 1 is seated on the stopper,

In order to improve the responsiveness of the piston 1, an outer diameter reduction portion 1 'and a stainless steel washer 2 are coupled to an upper portion of the piston 1 and an undercut portion 12' is formed inside the plate 12 Respectively,

A plastic spacer 14 is provided between the plate 12 covering the housing 11 and the sleeve 13 inside to contact the parts of the piston 1 to prevent loss of magnetic force,

An oil passage hole (17) is formed in the housing (11) to prevent malfunction caused by oil introduced into the solenoid assy,

The sleeve 13 is made of reinforced plastic for improving the heat resistance and wear resistance and for reducing the weight of the parts or is made of a metal material so as to improve the operability with the shaft and a Teflon or molybdenum coating is applied to the inner diameter portion, An oil inflow groove 13 'is formed so as to reduce the frictional force therebetween,

A fixing pin 18 is formed on the housing 11 for preventing rotation of the solenoid assembly and the housing 11 is assembled to the housing 13 in order to prevent damage and to prevent damage due to an impact at the upper end portion of the sleeve during operation, The rounded portion 19 is formed.

In the figure, reference numeral 50 denotes an electromagnetic field line, and 51 denotes a part part.

The operation of the clutch solenoid assembly of the automotive differential apparatus according to the present invention will be described in detail as follows.

First, let's look at the basic operation of clutch solenoid assy for automotive differentials.

Electricity is supplied to the coil assy 10 when the shaft 13 (not shown) constituting the differential device is mounted on the automotive differential unit and the operation of the differential unit is required.

The electromagnetic force generated by the magnetic field generated in the coil assembly 10 moves to the housing 11 and the piston 1 and the plate 12 to move the piston 1 toward the plastic spacer 14, When the electric power supplied to the coil assembly 10 is cut off, the electromagnetic force is extinguished and the piston 1 returns to the initial state together with the plastic spacer 14. In this case,

The operation of the clutch solenoidassay of the automotive differential apparatus having the above-described function will be described in detail.

First, when electricity is supplied to the coil assembly 10 constituting the solenoid assy 20, a magnetic field is generated in the coil assembly 10.

5, the piston 1 is pushed toward the plate 12 by the electromagnetic force while moving to the housing 11, the piston 1 and the plate 12. As a result, The plastic spacer 14 and the part 51 move together to connect the differential gear lock.

The reason why the electromagnetic force causing such action can be transferred to the piston 11 and the plate 12 without loss of the electromagnetic force is that the plastic spacer 14 formed of a nonmagnetic material between the plate 12 and the sleeve 13, The electromagnetic force is not lost by the stainless steel washer 2 coupled to the inner side of the piston 1 and the outer diameter reduction portion 1 'formed on the upper portion of the piston 1 and the undercut portion 12' formed on the inner side of the plate 12, The operation of the piston 1 is facilitated by the action of concentrating the electromagnetic force as a result of the reduction of the passage through which the electromagnetic force is moved by the piston 1 and the piston 1 is less affected by the electromagnetic force when the piston 1 is returned The response is improved.

The piston 1 is seated on the stopper 16 formed at the lower portion of the bobbin 15 and spaced apart from the bottom of the housing 11 so that when the piston 1 is actuated by the electromagnetic force, The piston 1 can be free from the adhesive force due to the oil introduced therein, and as a result, the response by the electromagnetic force can be greatly improved.

In order to improve the workability of the shaft, Teflon or Molybdenum coating is applied to the inner part of the sleeve to make the material of the sleeve constituting the solenoid assy is made of reinforced plastic for improvement of heat resistance and wear resistance and part weight. The frictional force between the sleeve and the shaft can be reduced and the oil can be introduced by the oil inflow groove formed in the sleeve, so that the frictional force between the sleeve and the shaft can be further reduced.

In addition, the oil passage holes 17 formed in the housing 11 constituting the solenoid assembly allow circulation of the operating oil introduced into the solenoid assembly, thereby causing malfunctions due to the oil pressure .

The fixing pin 18 formed on the housing 11 is connected to the solenoid assembly 20 when the solenoid assy 20 is mounted on the automotive differential unit. The solenoid assembly 20 is coupled to an engagement groove (not shown) Even when a rotational force of a shaft (not shown) is generated, the solenoid assy 20 acts to hold the solenoid assembly 20 unaffected thereby, thereby preventing the peripheral components from being damaged.

1: piston 1 ': outer diameter reduction portion
2: stainless steel Washer 10: coil Assey
11: housing 12: plate
12 ': undercut portion 13: sleeve
14: plastic spacer 16: stopper

Claims (6)

A solenoid assembly for a clutch of a vehicle differential unit comprises a housing loaded with a coil assembly and a piston, a plate covering the housing, a sleeve formed inside the housing, and a space provided at an upper portion of the piston,
A piston is seated on a stopper formed at a lower portion of the bobbin in order to minimize an adhesive force due to oil introduced into the solenoid assembly,
In order to improve the responsiveness of the piston, an outer diameter reduction portion and a stainless steel washer are coupled to an upper portion of the piston, an undercut portion is formed inside the plate,
A solenoid assy for a clutch of an automotive differential device characterized in that an oil passage hole is provided for preventing malfunction caused by oil introduced into the solenoid assy. The clutch solenoid valve according to claim 1, wherein the sleeve material is made of reinforced plastic for improving the heat resistance and wear resistance and for reducing the weight of the parts, and an oil inflow groove is formed between the sleeve and the shaft to reduce frictional force. Assey. The clutch solenoid assembly of claim 1, wherein the sleeve material is made of a metal material, and the inner diameter portion is coated with Teflon or Molybdenum to improve shaft operability. The clutch solenoid assembly of claim 1, wherein a plastic spacer is applied to reduce the magnetic force effect of the relative part part during piston operation. The clutch solenoid assembly of claim 1, wherein a fixing pin is formed on the housing for preventing rotation of the solenoid assy. The clutch solenoid assembly as claimed in claim 1, wherein a corner of the housing is formed as a round portion in order to prevent damage when the housing is assembled to the sleeve and to prevent damage due to an impact at the upper end portion of the sleeve during operation.
KR1020150066377A 2015-05-13 2015-05-13 Vehicle actuated clutches and differential devices assy KR101660641B1 (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020166801A1 (en) * 2019-02-15 2020-08-20 주식회사 신라공업 Solenoid assembly for vehicle differential device clutch
KR20210025225A (en) 2019-08-27 2021-03-09 주식회사 신라공업 Coil assembly of solenoid for automobile differential device and manufacturing method
KR20210025221A (en) 2019-08-27 2021-03-09 주식회사 신라공업 Inner plunger of solenoid assembly for clutch of automobile differential device and manufacturing method
KR20220028630A (en) 2020-08-31 2022-03-08 주식회사 신라공업 Coil assy applies to solenoids for clutch of automobile
KR20220028629A (en) 2020-08-31 2022-03-08 주식회사 신라공업 Coil assy manufactured by the method and method of manufacture of coil assy applied to the clutch solenoid of a motor vehicle
KR20220048584A (en) * 2020-10-13 2022-04-20 주식회사 신라공업 Solenoids and their manufacturing methods for automotive electromagnetic clutches
KR20220116958A (en) 2021-02-16 2022-08-23 최병선 Inner plunger of solenoid assembly for clutch of automobile differential device and manufacturing method
JP2022127874A (en) * 2021-02-22 2022-09-01 ソン チェ、ビョン Inner plunger of solenoid assembly for automobile differential clutch, and its manufacturing method
US11682512B2 (en) 2021-02-22 2023-06-20 Byoung Sun CHOI Inner plunger of solenoid assembly for differential clutch of vehicle and manufacturing method thereof
US11721466B2 (en) 2021-02-22 2023-08-08 Byoung Sun CHOI Inner plunger of solenoid assembly for differential clutch of vehicle and manufacturing method thereof
CN117087631A (en) * 2023-10-20 2023-11-21 山东亿嘉农业机械装备股份有限公司 Tractor braking assembly

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Publication number Priority date Publication date Assignee Title
KR860001499B1 (en) 1983-08-05 1986-09-27 포항종합제철 주식회사 Method for manufacturing of the rolled steel by cold working
KR20000031473A (en) 1998-11-06 2000-06-05 구본준 Lcd and manufacturing method thereof
JP2001107983A (en) * 1999-10-14 2001-04-17 Tochigi Fuji Ind Co Ltd Clutch device, and differential device using the same
JP2004104974A (en) * 2002-09-12 2004-04-02 Tochigi Fuji Ind Co Ltd Electromagnetic actuator and differential device and power intermitting device using the same
KR20050045486A (en) 2003-11-11 2005-05-17 기아자동차주식회사 Apparatus for locking differential gear of vehicle
JP2010127437A (en) * 2008-11-28 2010-06-10 Gkn Driveline Japan Ltd Differential device
KR20110026986A (en) 2009-09-09 2011-03-16 영신기전공업(주) Magnetic field improvement structure of electronic clutch
JP2013130228A (en) * 2011-12-21 2013-07-04 Gkn Driveline Japan Ltd Differential device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR860001499B1 (en) 1983-08-05 1986-09-27 포항종합제철 주식회사 Method for manufacturing of the rolled steel by cold working
KR20000031473A (en) 1998-11-06 2000-06-05 구본준 Lcd and manufacturing method thereof
JP2001107983A (en) * 1999-10-14 2001-04-17 Tochigi Fuji Ind Co Ltd Clutch device, and differential device using the same
JP2004104974A (en) * 2002-09-12 2004-04-02 Tochigi Fuji Ind Co Ltd Electromagnetic actuator and differential device and power intermitting device using the same
KR20050045486A (en) 2003-11-11 2005-05-17 기아자동차주식회사 Apparatus for locking differential gear of vehicle
JP2010127437A (en) * 2008-11-28 2010-06-10 Gkn Driveline Japan Ltd Differential device
KR20110026986A (en) 2009-09-09 2011-03-16 영신기전공업(주) Magnetic field improvement structure of electronic clutch
JP2013130228A (en) * 2011-12-21 2013-07-04 Gkn Driveline Japan Ltd Differential device

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200099674A (en) 2019-02-15 2020-08-25 주식회사 신라공업 Solenoid assembly for differential clutch of vehcle
KR102179066B1 (en) * 2019-02-15 2020-11-16 주식회사 신라공업 Solenoid assembly for differential clutch of vehcle
WO2020166801A1 (en) * 2019-02-15 2020-08-20 주식회사 신라공업 Solenoid assembly for vehicle differential device clutch
KR20210025225A (en) 2019-08-27 2021-03-09 주식회사 신라공업 Coil assembly of solenoid for automobile differential device and manufacturing method
KR20210025221A (en) 2019-08-27 2021-03-09 주식회사 신라공업 Inner plunger of solenoid assembly for clutch of automobile differential device and manufacturing method
KR20220028630A (en) 2020-08-31 2022-03-08 주식회사 신라공업 Coil assy applies to solenoids for clutch of automobile
KR20220028629A (en) 2020-08-31 2022-03-08 주식회사 신라공업 Coil assy manufactured by the method and method of manufacture of coil assy applied to the clutch solenoid of a motor vehicle
KR102478734B1 (en) * 2020-10-13 2022-12-19 주식회사 신라공업 Solenoids and their manufacturing methods for automotive electromagnetic clutches
KR20220048584A (en) * 2020-10-13 2022-04-20 주식회사 신라공업 Solenoids and their manufacturing methods for automotive electromagnetic clutches
KR20220116958A (en) 2021-02-16 2022-08-23 최병선 Inner plunger of solenoid assembly for clutch of automobile differential device and manufacturing method
JP2022127874A (en) * 2021-02-22 2022-09-01 ソン チェ、ビョン Inner plunger of solenoid assembly for automobile differential clutch, and its manufacturing method
JP7204241B2 (en) 2021-02-22 2023-01-16 ソン チェ、ビョン Inner plunger of solenoid assembly for automobile differential device clutch and manufacturing method thereof
US11682512B2 (en) 2021-02-22 2023-06-20 Byoung Sun CHOI Inner plunger of solenoid assembly for differential clutch of vehicle and manufacturing method thereof
US11721466B2 (en) 2021-02-22 2023-08-08 Byoung Sun CHOI Inner plunger of solenoid assembly for differential clutch of vehicle and manufacturing method thereof
CN117087631A (en) * 2023-10-20 2023-11-21 山东亿嘉农业机械装备股份有限公司 Tractor braking assembly
CN117087631B (en) * 2023-10-20 2023-12-29 山东亿嘉农业机械装备股份有限公司 Tractor braking assembly

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