KR101691739B1 - Injectpor for vehicle - Google Patents

Injectpor for vehicle Download PDF

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Publication number
KR101691739B1
KR101691739B1 KR1020150091263A KR20150091263A KR101691739B1 KR 101691739 B1 KR101691739 B1 KR 101691739B1 KR 1020150091263 A KR1020150091263 A KR 1020150091263A KR 20150091263 A KR20150091263 A KR 20150091263A KR 101691739 B1 KR101691739 B1 KR 101691739B1
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KR
South Korea
Prior art keywords
terminal
fixing
outer circumferential
circumferential surface
transfer tube
Prior art date
Application number
KR1020150091263A
Other languages
Korean (ko)
Inventor
이강훈
박준희
신문성
최원석
Original Assignee
주식회사 현대케피코
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Application filed by 주식회사 현대케피코 filed Critical 주식회사 현대케피코
Priority to KR1020150091263A priority Critical patent/KR101691739B1/en
Application granted granted Critical
Publication of KR101691739B1 publication Critical patent/KR101691739B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

The present invention relates to an injector for a vehicle. The present invention includes a terminal fixing clip (30) configured to be fixed on the outer circumferential surface of a fuel transfer tube (10) to be spaced apart from the outer circumferential surface of the fuel transfer tube (10); and an injector body (50) configured to inject plastic resin to support the outer circumferential surface of the fuel transfer tube (10). The present invention has an advantage of stably fixing a terminal and producing the injector with constant quality.

Description

[0001] INJECTION FOR VEHICLE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle injector, and more particularly, to a vehicle injector having a structure in which a terminal is stably fixed.

In the case of a PFI (Port Fuel Injection) engine, the low-pressure fuel of the fuel pump is supplied to the delivery pipe and injected.

Injection of fuel is controlled by controlling the electrical pulse time to the injector by the output signal inputted to the electronic control unit (ECU) according to the load state of the engine, so that each injector connected to the delivery pipe via the injector cup sequentially injects the fuel . Therefore, proper fuel injection according to the load condition of the engine can be achieved.

The prior art related to the present invention is Korean Patent Publication No. 1999-0064075 (electromagnetic control valve).

The injector injects plastic resin in a state where a terminal is connected to the solenoid coil to complete the injector body.

However, since the conventional injector is in contact with the outer circumferential surface of the fuel delivery tube and is short-circuited in the course of production, the injector quality is not constant.

An object of the present invention is to provide a vehicle injector having a structure in which a terminal is stably fixed by mounting a terminal fixing clip on the outer circumferential surface of a fuel transfer tube to prevent deformation of the terminal during injection molding of the injector body.

According to an aspect of the present invention for achieving the above object, the present invention provides a fuel supply apparatus including a terminal fixing clip fixed to an outer circumferential surface of a fuel transfer tube to fix a terminal away from an outer circumferential surface of the fuel transfer tube, And an injector body formed by injecting a plastic resin to support the outer circumferential surface and to which a connector for electrical connection is coupled.

The terminal fixing clip may include a body portion formed with an insertion hole into which an outer circumferential surface of the fuel transfer tube is inserted, and a fixing portion formed on an outer circumferential surface of the body portion and having a fixing surface recessed in the longitudinal direction so as to fit the terminal .

Wherein the fixing surface is formed parallel to an outer circumferential surface of the fuel transfer tube and is fixed so that the terminal is parallel to an outer circumferential surface of the fuel transfer tube, and a second fixing surface formed at an angle to the first fixing surface, And a second fixing surface that is bent and fixed to the outside of the fuel delivery tube.

The body may be formed to have a C-shaped cross section with a part of the outer peripheral surface thereof being open.

A recessed groove for receiving the bent portion of the terminal may be formed between the first fixing surface and the second fixing surface.

The terminal is assembled together with the terminal fixing clip when the terminal fixing clip is mounted on the fuel transfer tube and the coil assembly is assembled. The injector body injects plastic resin in a direction in which the terminal is assembled to the terminal fixing clip .

The present invention adopts a structure in which the terminal fixing clip is fixed to the outer circumferential surface of the fuel transfer tube and the terminal fixing clip stably fixes the terminal so that the terminal after completion of the injector body is stably fixed in the injector body, The electrical connection can be performed stably, so that the injector quality can be made uniform and the process yield can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a vehicle injector according to a preferred embodiment of the present invention. FIG.
FIG. 2 is a perspective view showing the terminal fixed to the outer circumferential surface of the fuel delivery tube by the terminal fixing clip according to the preferred embodiment of the present invention. FIG.
Figure 3 is a perspective view of a terminal securing clip in accordance with a preferred embodiment of the present invention;
Fig. 4 is a side sectional view of Fig. 3; Fig.
Fig. 5 is a bottom view of Fig. 4; Fig.
Figure 6 is a bottom plan view of a terminal securing clip in accordance with another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1, a vehicle-mounted injector 1 according to the present invention includes a terminal fixing clip 12 fixed to an outer circumferential surface of a fuel transfer tube 10 and holding a terminal 20 at a distance from an outer circumferential surface of the fuel transfer tube 10, And an injector body 50 formed by injecting a plastic resin so as to support the outer peripheral surface of the fuel transfer tube 10 and the injector body 30.

The injector 1 is a device that is fixed to an engine of a vehicle and accurately injects fuel toward an intake port in accordance with an electric signal transmitted from an electronic control unit (ECU).

Although not shown, the fuel transfer tube 10 is formed with a fuel transfer path through which fuel flows, a jet port is formed below the fuel transfer path, and the jet port is closed by a needle. The needle is lifted by the magnetization of the solenoid coil supplied with power and opens the jetting port. The solenoid coil changes the current generated by power supply to magnetic force.

The solenoid coil 25 is surrounded by a housing 27. And a terminal 20 for supplying power to the solenoid coil 25 is connected. The terminal 20 is assembled into a body with a coil assy and then fixed to the fuel transfer tube 10 and connected to the solenoid coil 25. [ The coil AES includes a pair of terminals with +/-. The coil AES serves to complete the circuit around the solenoid coil.

The injector 1 connects the solenoid coil 25 and the terminal 20, and then injects plastic resin thereon to form the injector body 50.

In this process, in order to prevent deformation of the terminal due to the injection pressure, bending or pushing of the terminal, and short-circuit due to contact between the terminal 20 and the fuel delivery tube 10, The fixing clip 30 is mounted to stably fix the terminal 20.

In the case of the injector body 50 having a long length in the fuel injecting port (PFI, Port Fuel Injection) injector, since the terminal 20 to be assembled also has a long shape, the terminal 20 is difficult to be stably fixed, Problems such as deformation, disconnection, short-circuit, etc. of the terminal 20 are likely to occur during the molding process.

Deformation or short-circuiting of the terminal 20 makes it difficult to produce a constant quality injector, thereby lowering the process yield of the injector.

2 and 3, the terminal fixing clip 30 is fixed to the outer circumferential surface of the fuel transfer tube 10 to fix the terminal 20 thereto.

The terminal fixing clip 30 includes a body portion 31 having an insertion hole 33 into which the outer peripheral surface of the fuel delivery tube 10 is inserted.

The body portion 31 may be formed in a cylindrical shape to be fitted to the outer circumferential surface of the fuel delivery tube 10. The insertion hole 33 is a portion where the fuel transfer tube 10 is inserted and fixed. The insertion hole 33 is formed so as to correspond to the outer circumferential surface of the fuel transfer tube 10.

A fixing portion 35 for fixing the terminal 20 to the outer peripheral surface of the body portion 31 is formed. The body portion 31 and the fixing portion 35 may be integrally formed by injecting a plastic resin.

Or the body portion 31 and the fixing portion 35 may be integrally formed with the fuel transfer tube 10. [

The fixing portion 35 is formed with a fixing surface 41 recessed in the longitudinal direction so that the terminal 20 is inserted.

A pair of fixing surfaces 41 are formed in parallel to each other at both sides in the longitudinal direction and by guide ribs 37 protruding from the center. A pair of terminals 20 having +/- on the fixing surface 41 are inserted Loses.

The fixing surface 41 has a first fixing surface 43 formed parallel to the outer circumferential surface of the fuel transfer tube 10 and a second fixing surface 44 formed to be inclined at a predetermined angle with respect to the first fixing surface 43 .

The first fixing surface 43 fixes a portion of the terminal 20, which is connected to the solenoid coil 25, so as to be in parallel with the outer circumferential surface of the fuel transfer tube 10. The terminal 20 fixed to the first fixing surface 43 is not spaced apart from the outer circumferential surface of the fuel delivery tube 10 but spaced apart by a predetermined distance. The first fixing surface 43 is spaced apart from the surface of the body 31.

The second fixing surface 44 fixes the terminal 20 to the outside of the fuel delivery tube 10 after it is bent. The terminal 20 facing the outside of the fuel transfer tube 10 is located in the connector 51 of the injector body 50 and can be connected to the terminal of the external connector 51 to supply power to the solenoid coil 25. [

The inclination angle of the second fixing surface 44 is formed in consideration of the position of the portion to be the connector 51 in the injector body 50. The width of each of the first fixing surface 43 and the second fixing surface 44 corresponds to the width of the terminal 20 for stable fixing of the terminal 20. The second fixing surface 44 is also spaced apart from the surface of the body 31 so that the lower end of the second fixing surface 44 is spaced from the surface of the body 31.

The fixing portion 35 stably seats the terminal 20 on the first fixing surface 43 and the second fixing surface 44 and fixes the terminal 20 to the both side guide ribs 37a and 37b and the center guide rib 37c. 20 are fixed to prevent the terminal 20 from flowing and deforming.

The terminal 20 is provided with a curved bent portion 20a for smooth connection with the solenoid coil 25 and an external connector (not shown).

A recessed groove 45 for receiving the bent portion 20a of the terminal 20 is formed between the first fixing surface 43 and the second fixing surface 44. [ The recessed recesses 45 are for preventing the terminals 20 from being bent and the bent portions 20a to come into contact with the fixing surfaces 41 and the like.

4, the body portion 31 and the fixing portion 35 may be integrally formed, and the fixing portion 35 may be divided into two portions with respect to the recessed groove 45. That is, the first fixing part 35a and the second fixing part 35b may be divided into two parts: a first fixing part 35a on which the first fixing surface 43 is formed and a second fixing part 35b on which the second fixing surface 44 is formed.

The portion of the terminal 20 fixed to the first fixing portion 35a is connected to the solenoid coil 25 and the portion of the terminal fixed to the second fixing portion 35b is connected to the terminal of the external connector 51. [

The recessed groove 45 is formed to have a size enough to accommodate the bent portion 20a of the terminal 20. Further, the recessed groove 45 prevents the bent portion 20a of the terminal 20 from coming into contact with the fixing portion 35. In addition, the bent portion 20a is bent in the recessed groove 45 so as to be separated from the body portion 31 while being bent toward the body portion 31. [

As shown in FIG. 5, the first fixing surface 43 and the second fixing surface 44 are formed at positions which are recessed at a certain depth by the guide ribs 37 protruding from both sides and the center. The depth a at which the first fixing surface 43 and the second fixing surface 44 are recessed is preferably formed to correspond to the thickness of the terminal 20 or to a deeper depth so as to stably support the terminal 20 .

The guide ribs 37c protruding from the center of the fixing portion 35 are formed so as to protrude from both side guide ribs 37a and 37b so that the +/- terminal 20 arranged side by side around the center guide rib 37c It is desirable to fundamentally prevent the possibility of mutual electrical contact.

On the other hand, the terminal 20 mounts the terminal fixing clip 30 to the fuel transfer tube 10 and assembles together with the terminal fixing clip 30 when the coil assembly is assembled, so that the electrical connection is stable.

The injector body 50 is formed by injecting a plastic resin in a direction in which the terminal 20 is assembled to the terminal securing clip 30. The injection direction is set to be the direction in which the terminal 20 is assembled to the terminal fixing clip 30, thereby preventing the terminal from being pushed by the injection pressure.

Hereinafter, the operation of the present invention will be described.

In the intermediate assembly stage of the injector, the terminal fixing clip 30 is mounted on the outer circumferential surface of the fuel transfer tube 10. Then, when assembling the coil assembly, the terminal 20 is assembled together with the terminal fixing clip 30 to fix the terminal 20 to the fuel transfer tube 10 in advance.

The terminal 20 is fitted with a pair of terminals 20 each having +/- on the fixing surface 41 and the portion fitted to the first fixing surface 43 is parallel to the outer peripheral surface of the fuel transfer tube 10 And the portion that is fitted to the second fixing surface 44 is directed to the outside of the fuel delivery tube 10.

The end of the terminal 20 fitted to the first fixing surface 43 is connected to the solenoid coil 25 and the bent portion of the terminal 20 is formed between the first fixing surface 43 and the second fixing surface 44 So that interference with the fixing portion 35 due to bending can be prevented.

After the terminal 20 is assembled to the terminal fixing clip 30, the injector body 50 is completed by injecting the plastic resin constituting the injector body 50. At this time, the injecting direction of the injector body 50 is such that the terminal 20 is pushed by the injection pressure such that the terminal 20 is directed in the direction in which the terminal 20 is assembled to the terminal fixing clip 30 Thereby preventing deformation.

When the injection molding of the injector body 50 is completed, the terminal 20 is connected to the solenoid coil 25 at one end and the other end is positioned in the connector of the injector body 50 to electrically connect the terminal of the external connector 51 As shown in FIG.

In the injection molding process of the injector body 50, the terminal fixing clip 30 stably fixes the terminal 20 to prevent terminal deformation, and the terminal 20 can be brought into contact with the fuel delivery tube 10, A short circuit can be prevented and the terminal 20 can be prevented from being exposed to the outside of the injector body 50 after the injection of the injector body 50.

In addition, when the injector intermediate assembly is assembled to the injection mold for injection molding the injector body 50, the terminal 20 is positioned to be easily assembled to the slide core of the mold.

Therefore, the terminal 20 can be stably fixed in the injector body 50 and the electrical connection with the solenoid coil 25 can be performed stably. This improves the process yield by keeping the injector quality constant.

6, the body 31 of the terminal fixing clip 30 may be formed to have a C-shaped cross section with a part of the outer peripheral surface thereof being open.

The body portion 31 is formed on the outer circumferential surface of the fuel delivery tube 10 through the opening 34. The body portion 31 is formed with an opening 33 for communicating the insertion hole 33 with the outside in the longitudinal direction, It can be mounted on the side.

The C-shaped cross section of the body portion 31 prevents the body portion 31 from being dismounted from being mounted on the outer peripheral surface of the fuel delivery tube 10.

6 is the same as the terminal securing clip 30 shown in FIG. 5 except for the shape of the body 31, and thus a detailed description thereof will be omitted.

The scope of the present invention is not limited to the embodiments described above, but may be defined by the scope of the claims, and those skilled in the art may make various modifications and alterations within the scope of the claims It is self-evident.

1: Injector 10: Fuel transfer tube
20: Terminal 25: Solenoid coil
30: terminal fixing clip 31: body part
33: insertion hole 35:
37: Guide rib 41: Fixing surface
43: first fixing surface 44: second fixing surface
45: depression groove 50: injector body
51: Connector

Claims (6)

A terminal fixing clip fixed to the outer circumferential surface of the fuel transfer tube to fix the terminal to the outer circumferential surface of the fuel transfer tube so as to be spaced apart from each other;
And an injector body formed by injecting a plastic resin to support an outer circumferential surface of the fuel transfer tube and to which a connector for electrical connection is coupled,
Wherein the terminal fixing clip includes a body portion having an insertion hole into which an outer circumferential surface of the fuel transfer tube is inserted and a fixing portion formed on an outer circumferential surface of the body portion and having a fixing surface recessed in the longitudinal direction to fit the terminal,
Wherein the fixing surface includes a first fixing surface parallel to the outer circumferential surface of the fuel transfer tube and spaced from the surface of the body portion and fixed so that the terminal is parallel to the outer circumferential surface of the fuel transfer tube, And a second fixing surface formed to be inclined by a predetermined angle and spaced apart from a surface of the body portion and fixed to the outside of the fuel delivery tube after the terminal is bent,
A recessed groove for receiving a bent portion of the terminal is formed between the first fixing surface and the second fixing surface,
Wherein the bent portion of the terminal is bent toward the surface of the body portion so as to be spaced apart from the body portion in the recessed groove and is not in contact with the fixing portion. delete The method according to claim 1,
Wherein the body is formed so as to have a C-shaped cross-section in which a part of an outer circumferential surface thereof is open. delete delete The method according to claim 1,
The terminal is assembled with the terminal securing clip when mounting the terminal securing clip to the fuel delivery tube and assembling the coil assembly,
Wherein the injector body is formed by injecting a plastic resin in a direction in which the terminal is assembled to the terminal securing clip.
KR1020150091263A 2015-06-26 2015-06-26 Injectpor for vehicle KR101691739B1 (en)

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KR1020150091263A KR101691739B1 (en) 2015-06-26 2015-06-26 Injectpor for vehicle

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220055146A (en) 2020-10-26 2022-05-03 주식회사 현대케피코 Injector for preventing fuel leakage and control method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007016774A (en) * 2005-06-07 2007-01-25 Denso Corp Fuel injection valve and its manufacturing method
JP2013524088A (en) * 2010-07-13 2013-06-17 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Fuel injection valve with reduced component count
JP2013185458A (en) * 2012-03-06 2013-09-19 Keihin Corp Fuel injection valve with cylinder internal pressure sensor
WO2013183307A1 (en) * 2012-06-08 2013-12-12 本田技研工業株式会社 Fuel injection device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007016774A (en) * 2005-06-07 2007-01-25 Denso Corp Fuel injection valve and its manufacturing method
JP2013524088A (en) * 2010-07-13 2013-06-17 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Fuel injection valve with reduced component count
JP2013185458A (en) * 2012-03-06 2013-09-19 Keihin Corp Fuel injection valve with cylinder internal pressure sensor
WO2013183307A1 (en) * 2012-06-08 2013-12-12 本田技研工業株式会社 Fuel injection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220055146A (en) 2020-10-26 2022-05-03 주식회사 현대케피코 Injector for preventing fuel leakage and control method thereof

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