KR920006360Y1 - Solenoid valve - Google Patents
Solenoid valve Download PDFInfo
- Publication number
- KR920006360Y1 KR920006360Y1 KR2019860000326U KR860000326U KR920006360Y1 KR 920006360 Y1 KR920006360 Y1 KR 920006360Y1 KR 2019860000326 U KR2019860000326 U KR 2019860000326U KR 860000326 U KR860000326 U KR 860000326U KR 920006360 Y1 KR920006360 Y1 KR 920006360Y1
- Authority
- KR
- South Korea
- Prior art keywords
- valve
- solenoid valve
- guide hole
- switch
- large diameter
- Prior art date
Links
- 239000004020 conductor Substances 0.000 claims description 5
- 239000000446 fuel Substances 0.000 description 22
- 238000002347 injection Methods 0.000 description 15
- 239000007924 injection Substances 0.000 description 15
- 238000005240 physical vapour deposition Methods 0.000 description 8
- 239000011810 insulating material Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000007733 ion plating Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
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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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
-
- 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
- F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
- F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
- F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
- F02M41/12—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor
- F02M41/123—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor characterised by means for varying fuel delivery or injection timing
- F02M41/125—Variably-timed valves controlling fuel passages
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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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
Abstract
내용 없음.No content.
Description
제1도는 본 고안에 의한 전자밸브를 구비한 연료분사펌프의 한실시예를 일부단면하여 나타낸 정면도.1 is a front view showing a partial cross-sectional view of an embodiment of a fuel injection pump having a solenoid valve according to the present invention.
제2도는 제1도에 나타낸 전자밸브의 일부를 확대하여 나타낸 일부확대단면도.2 is a partially enlarged sectional view showing an enlarged portion of the solenoid valve shown in FIG.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 전자밸브 11 : 밸브1: solenoid valve 11: valve
11a : 대경부(大徑部) 11d : 상축 에지부(edge 哥)11a: large diameter part 11d: upper shaft edge part
11e : 하측에지부 12 : 케이싱11e: lower edge part 12: casing
13 : 안내구멍 13a, 13b : 대경부13: guide hole 13a, 13b: large diameter part
15 : 절연층 16 : 밸브시이트15 insulation layer 16 valve seat
17 : 전기자 27 : 전자석17: armature 27: electromagnet
본 고안은 밸브와 밸브시이트로 스위치를 구성하도록 배치한 전자밸브에 관한 것이다.The present invention relates to a solenoid valve arranged to constitute a switch with a valve and a valve seat.
종래에는 밸브장치의 개폐상태에 응답한 전기신호를 얻기위하여 밸브와 밸브시이트로 스위치를 구성한 밸브장치는 잘알려져 있으나, 이와같이 구성한 스위치 부속의 전자밸브는, 밸브의 개폐타이밍을 검출하여 그 결과를 파이드백(feed-back)한다음, 전자밸브에 인가하는 구동펄스의 보정을 하여 전자밸브의 개폐타이밍을 목표타임에 일치시키도록한 전자밸브 구동회로를 구성하는 경우에 필요로 한다.Conventionally, a valve device including a switch and a valve seat to obtain an electrical signal in response to an open / closed state of the valve device is well known. However, the solenoid valve with a switch configured as described above detects the open / close timing of the valve and feeds the result. It is necessary to construct a solenoid valve driving circuit in which the driving pulse applied to the solenoid valve is corrected after the feed-back, and the opening and closing timing of the solenoid valve is made to match the target time.
이런 종류의 밸브장치로서는 예컨대, 연료분사개시의 타이밍 및 연료분사종료의 타이밍을 나타낸 전기신호를 니이들밸브의 움직임에 따라서 얻어낼 목적으로 니이들밸브와 노즐본체에의 기계적스위치를 구성하도록한 인료분사밸브가 공개계제되어 있다(일본국 특개소 53-60432호 공보).As a valve device of this type, for example, a person who constitutes a needle valve and a mechanical switch to the nozzle body for the purpose of obtaining an electric signal indicating the timing of fuel injection start and the timing of fuel injection end according to the movement of the needle valve. The injection valve is open-regulated (Japanese Patent Laid-Open No. 53-60432).
이 공개계제된 연료분사밸브에서는, 노즐본체 및 노즐본체의 안내구멍의 활동하는 니이들 밸브를 도전성재료를 사용하여 형성하였으며, 도전성가동 부재인 니이들밸브의 바깥면을 0.2-0.3μ 정도두께의 세라믹 절연막으로 덮거나, 또는 산화 알루미늄을 니이들밸브의 바깥면에 스퍼터(sputter)시켜서 절연막으로 하고 있다.In this openly-controlled fuel injection valve, a needle valve acting on the nozzle body and the guide hole of the nozzle body is formed by using a conductive material, and the outer surface of the needle valve, which is a conductive movable member, has a thickness of about 0.2-0.3 μm. The insulating film is covered with a ceramic insulating film, or aluminum oxide is sputtered on the outer surface of the needle valve to form an insulating film.
그러나, 이런종류의 절연막으로는 어느 경우에도 강도가 불충분하였으며 , 근년에 와서, 절연재를 스퍼터링 혹은, 이온 플레이팅등의 물리증착법에 의하여 밸브의 소요개소에 입힌다음, 이에 따라 밸브의 미끄러져 움직이는 부분(sliding porion)에서의 절연을 충분히 기계적 강도를 지닌 개량된 밸브장치가 제안되어 왔다.However, this type of insulating film had insufficient strength in any case, and in recent years, the insulating material is coated on the required part of the valve by physical vapor deposition such as sputtering or ion plating, and then the sliding part of the valve accordingly. Improved valve arrangements with sufficient mechanical strength for insulation in sliding porions have been proposed.
그러나, 물리증착법의 성질상, 피증착부제의 에지부에는 증착물질이 부착되기 어렵다고 하는 결점을 지니고 있기 때문에 밸브의 바깥면에 절연재를 물리증착법으로 피복하였을 경우, 밸브의 에지부의 절연이 불완전하게 되기 쉽다.However, due to the nature of the physical vapor deposition method, there is a drawback that deposition material is difficult to adhere to the edge portion of the deposition target, and when the insulating material is coated by the physical vapor deposition method on the outer surface of the valve, the insulation of the edge portion of the valve becomes incomplete. easy.
이때문에 밸브를 포함하여 구성되는 스위치의 작동시에 밸브의 에지부가 밸브를 안내하는 안내구멍의 내벽멱과 때때로 도통하여, 이에 따라 스위치에서 소음이 발생한다고 하는 문제점이 있다.For this reason, when the switch including the valve is operated, the edge portion of the valve sometimes conducts with the inner wall 의 of the guide hole for guiding the valve, thereby causing a problem that noise occurs in the switch.
본 고안의 목적은, 따라서 밸브의 미끄러져움직이는 부분의 절연층을 물리증착벅에 의하여 형성하여도 스위치부에서 소음이 발생하지 않도록한 기계적 및 전기적 신뢰성이 높은 스위치를 구비한 전자밸브를 제공함에 있다.It is therefore an object of the present invention to provide a solenoid valve having a mechanically and electrically reliable switch which prevents noise from being generated in the switch part even when the insulating layer of the sliding part of the valve is formed by a physical vapor deposition buck. .
본 고안의 구성은, 도전성재료로 형성한 밸브와 이 밸브를 활동이 자유롭도록 안내하는 안내구멍이 형성된 도전성본체의 밸브가 도전성 본체에 형성한 밸브시이트에 착석(seated)하였을때에 이 도전성본체와 밸브가 전기적으로 접속되는 스위치를 구성하기 위하여 밸브의 활동면에 분리증착법으로 형성된 절연층를 지니고 형성되었으며, 벨브가 안내구멍에서 활동(滑動)하였을 경우에 밸브의 에지부가 안내구멍의 내부면에 접촉하는 것을 방지하기 위하여 안내구멍에 대경부를 형성하고 있다는 점에 특징이 있다.The constitution of the present invention is that when the valve formed of the conductive material and the valve of the conductive body having guide holes for guiding the valve freely are seated on the valve sheet formed on the conductive body, In order to form a switch in which the valve is electrically connected, the valve has an insulating layer formed on the active surface of the valve by a separate deposition method. When the valve is active in the guide hole, the edge portion of the valve contacts the inner surface of the guide hole. The feature is that a large diameter portion is formed in the guide hole in order to prevent this from happening.
안내구멍내에 상술한 대경부를 마련하면 밸브가 안내구멍내에서 활동할때에 밸브의 에지부가 안내구멍의 내면과 접촉하지 않고도 되므로 밸브에 형성되는 절연층이 그 에지부에서 불완전하게 되어도 밸브와 도전성본체가 밸브의 에지부를 개제하여 전기적으로 접속되는것을 확실히 방지할 수 있다.When the above-mentioned large diameter portion is provided in the guide hole, the valve edge portion does not come into contact with the inner surface of the guide hole when the valve is actuated in the guide hole, so that even if the insulating layer formed on the valve becomes incomplete at the edge portion, It is possible to reliably prevent the electrical connection by opening the edge portion of the valve.
이결과, 밸브표면에 물리증착법에 의한 기계적강도에 뛰어난 절연층을 형성함에 따라서 스위치를 전자밸브에 형성하여도 스위치의 작동시에 소음이 발생하는 일이없이 기계적 및 전기적으로 신뢰성이 높은 스위치달린 전자벨브를 얻을 수 있다.As a result, an insulating layer having excellent mechanical strength by physical vapor deposition is formed on the surface of the valve, so that even if the switch is formed on the solenoid valve, it is mechanically and electrically reliable switch electronics without generating noise during operation of the switch. You can get a valve.
다음에 도해한 실시예에 따라 본 고안을 상세히 설명한다.Next, the present invention will be described in detail according to the illustrated embodiment.
제1도에는 본 고안에 의한 스위치달린 절자밸브(1)를 분배형 연료분사펌프(2)의 분사량조절부재로서 적용하였을 경우의 한 실시예를 나타내고 있다.FIG. 1 shows an embodiment in the case where the switched valve valve 1 according to the present invention is applied as the injection amount adjusting member of the distribution type fuel injection pump 2.
분배형 연료분사펌프(2)는 도해에 없는 내연기관에 의하여 구동되는 회전축(3)을 지녔으며, 회진축(3)의 회전에 따라 플런저배럴(4)내에서 플런저(5)가 회전 왕복운동하고, 이에따라 고압실(6)내에 연료를 흡입하여 이흡입된 연료를 압축하는 구성으로 되어 있다.The dispensing fuel injection pump 2 has a rotating shaft 3 driven by an internal combustion engine not illustrated, and the plunger 5 rotates in the plunger barrel 4 in accordance with the rotation of the rotary shaft 3. Accordingly, the fuel is sucked into the high pressure chamber 6 to compress the sucked fuel.
고압실(6)내에서 압축된 연료는 플런저(5)의 일정한 리9트 타이밍으로 도해에 없는 배수밸브를 개제하여 필요한 실린더내에 압송된다.The fuel compressed in the high pressure chamber 6 is pumped into the required cylinder by opening a drain valve not shown in the drawing at a constant reset timing of the plunger 5.
더우기 부호(7)로 나타낸 것은, 연료차단용 진자밸브이며, 연료차단용 전자밸브(7)가 닫쳐짐에 따라 고압실(6)내에 연료가 흡입되는 것이 정지된다.Further, indicated by reference numeral 7 is a fuel cutoff pendulum valve, and as the fuel cutoff solenoid valve 7 is closed, the intake of fuel into the high pressure chamber 6 is stopped.
고압실(6)내에서 압축된 연료를 희망하는 량만큼 엔진의 실린더에 공급할 수 있도록 본 고안에 의한 연료분사량조절을 위한 전자밸브(1)가 분배형연료분사펌프(2)의 케이싱을 위한 전자밸브(1)가 분배형연료분사펌프(2)의 케이싱(8)에 적당한 수단으로 굳게 붙쳐져 있다.The solenoid valve 1 for controlling the fuel injection amount according to the present invention is provided for the casing of the distribution type fuel injection pump 2 so that the fuel compressed in the high pressure chamber 6 can be supplied to the cylinder of the engine as desired. The valve 1 is firmly attached to the casing 8 of the distribution fuel injection pump 2 by appropriate means.
전자밸브(1)는 도전성재료인 강철로된 밸브(11)와, 마찬가지로 강철로 된 본체(12)와를 지니고 있으며, 본체(12)는 밸브(11)가 그 축선 방향으로 활동할 수 있도록 밸브(11)를 지지안내하기 위한 안내구멍(13)이 형성되어 있는 안내 블록(14)을 포함하고 있다.The solenoid valve 1 has a valve 11 made of steel, which is a conductive material, and a body 12 made of steel, and the body 12 has a valve 11 so that the valve 11 can act in its axial direction. And a guide block 14 having a guide hole 13 for supporting the guide.
밸브(11)는 그 일부가 큰지름으로 되어 있으며, 이 대경부(1la)의 바깥면(11b)에 스퍼터링, 이온플레이팅등과 같은 물리증착법으로 적당한 절연물을 입혀서 된 절연층(15)이 마련되었으며, 대경부(11a)는 이 절연층(15)을 개제하여 안내구멍(13)의 내주면과 접촉하고 있다.A part of the valve 11 has a large diameter, and an insulating layer 15 is formed on the outer surface 11b of the large diameter portion 1la by applying an appropriate insulator by physical vapor deposition such as sputtering or ion plating. The large diameter portion 11a is in contact with the inner circumferential surface of the guide hole 13 with the insulating layer 15 interposed therebetween.
안내구멍(13)의 내경은 절연층(15)의 두께를 고려하여 대경부(11a)의 외경보다도 약간크도록 정하여져 있으며, 이에 따라서, 밸브(11)의 대경부(11a)와 안내구멍(13)과 사이의 유밀(oiltight)상태를 유지하연서, 밸브(11)를 안내구멍(13)에 의하여 그 축선 방향으로 활동이 자유롭도록 안내할 수 있다.The inner diameter of the guide hole 13 is determined to be slightly larger than the outer diameter of the large diameter portion 11a in consideration of the thickness of the insulating layer 15. Accordingly, the large diameter portion 11a and the guide hole 13 of the valve 11 are determined. The valve 11 can be guided freely in the axial direction by the guide hole 13 while maintaining the oiltight state between the < RTI ID = 0.0 >
밸브(11)의 하단부에는 원추부(11c)가 형성되어 있으며 밸브(11)가 윗쪽으로 이동하였을 때에, 원추부(11c)가 안내블록(14)의 하단개구부에 형성되어 있는 밸브시이트(16)착석하는 구성으로 되어 있다.Conical portion 11c is formed at the lower end of the valve 11, and when the valve 11 is moved upward, the valve seat 16 is formed at the lower end opening of the guide block 14. It is a structure which sits.
밸브(11)에는 원판상의 전기자(17)가 안내블록(14)을 덮는 것처럼하여 굳게 붙어있으며, 전기자(17)의 위에 배설된 스프링슈우(18)와 본체(12)와의 사이에는 코일스프링(19)이 탄발적으로 개제 장착되어 있으며, 이에따라 밸브(11)는 아래쪽으로 스프링가압되어 있다.The armature 17 of the disk is firmly attached to the valve 11 as if it covers the guide block 14, and between the spring shoe 18 disposed on the armature 17 and the body 12, the coil spring 19 ) Is elastically mounted, and the valve 11 is spring-pressed downwards accordingly.
제2도에 나타낸 바와같이 코일스프링(19)의 본체(12)쪽에는 스프링슈우(20)와 전극판(21)이 마련되어 있으며, 스프링슈우(20)및 전극관(21)은 절연부재(22)에 의하여 본체(12)와 전기적으로 절연되어 있다.As shown in FIG. 2, a spring shoe 20 and an electrode plate 21 are provided on the main body 12 side of the coil spring 19, and the spring shoe 20 and the electrode tube 21 are insulated from each other. Is electrically insulated from the main body 12.
부호(23)은 코일스프링(19)의 설정력을 조정하기 워한 심(shim)이며 스프링슈우(20), 진극판(21), 절연부재(22)및 심(23)은 보울트(24)와 너트(25)에 의하여 본체(12)에 확고히 곧게 붙어 있다.Reference numeral 23 denotes a shim for adjusting the set force of the coil spring 19, and the spring shoe 20, the positive electrode plate 21, the insulating member 22, and the shim 23 are connected to the bolt 24. The nut 25 is firmly attached to the main body 12.
더우기, 보울트(24)와 너트(25)와를 개제하여 본체(12)가 스프링슈우(20)와 전기적으로 접촉하는 것을 방지하기 위하여 보울트(24)와 본체(12)와의 사이에는 절연시이트(26)가 마련되어 있다. 코일스프링(19)의 힘에 저항하여 밸브(11) 상반으로 이동시켜서 원추부(11c)를 밸브시이트(16)에 착서하게 하여 전자밸브(1)를 닫을 수 있도록 본체(12)내에는 전기자(17)와 맞서계 배치된 전자석(27)이 배치되어 있다. 전자석(27)은 코어(28)에 여자코일(29)을 감아서 형성한 것으로 여자코일(29)에 여자전류를 흐르게 함에 따라 전기자(17)를 전자흡인력으로 끌어붙이며 이에 따라 밸브(11)를 코일스프링(19)의 힘에 저항하여 상방으로 이동시켜 전자밸브(1)를 오프상태로 한다.Moreover, the insulating sheet 26 is provided between the bolt 24 and the main body 12 to prevent the main body 12 from being in electrical contact with the spring shoe 20 by interposing the bolt 24 and the nut 25. Is provided. An armature (or armature) within the body 12 to close the solenoid valve 1 by moving the upper portion of the valve 11 against the force of the coil spring 19 to move the cone 11c to the valve seat 16 to close the solenoid valve 1. The electromagnet 27 arrange | positioned facing the 17) is arrange | positioned. The electromagnet 27 is formed by winding the excitation coil 29 on the core 28 and attracts the armature 17 with an electromagnetic suction force as the excitation current flows through the excitation coil 29, thereby pulling the valve 11. The solenoid valve 1 is turned off by moving upward against the force of the coil spring 19.
밸브(11)가 코일스프링(19)의 힘과 전자석(27)의 전자 흡인력과에 의하여 그 축선방향으로 이동할때에 그 대경부(11a)의 위쪽에지(11d)및 아래쪽에지(11e)가 안내블록(14)와 접촉하는 것을 확실하게 방지하기 때문에 안내구멍(13)의 상부 및 하부에는 안내구멍(13)의 내경보다 대경의 대경부(13a), (13b)가 형성되어 있다.When the valve 11 moves in the axial direction by the force of the coil spring 19 and the electromagnetic attraction force of the electromagnet 27, the upper edge 11d and the lower edge 11e of the large diameter portion 11a are guided. In order to reliably prevent contact with the block 14, the large diameter part 13a, 13b of larger diameter than the inner diameter of the guide hole 13 is formed in the upper part and the lower part of the guide hole 13. As shown in FIG.
따라서, 전자밸브의 개폐시에 밸브(11)가 안내구멍(13)에 잇따라서 이동하였을경우에, 밸브(11)의 위쪽에지(11d) 및 아래쪽에지(11e)는 각기 대경부(13a), (13b)에 대응하고 있으므로 각 에지(11d), (11e)의 절연물의 피복이 불완전하게 되어도, 밸브(11)와 본체(12)와가 에지(11d), (11e)를 개재하여 전기적으로 접촉하는 일이 없이 전기적으로 극히 신뢰성이 높은 스위치를 밸브(11)와 본체(12)와로 구성할 수 있다.Therefore, when the valve 11 is moved along with the guide hole 13 at the time of opening and closing of the solenoid valve, the upper edge 11d and the lower edge 11e of the valve 11 are respectively the large diameter portion 13a, Corresponding to 13b, the valve 11 and the main body 12 are in electrical contact via the edges 11d and 11e even when the covering of the insulators of the respective edges 11d and 11e becomes incomplete. The switch 11 and the main body 12 which are electrically extremely reliable can be comprised without work.
더우기, 전기자(17), 스프링슈우(18), 코일스프링 (19), 스프링슈우(20) 및 전자판(21)은 모두 도전성재료로만들어져 있으므로 밸브(11)는 이들 각부재를 개제하여 항상 전자관(21)과 전기적으로 접속되어 있으며, 전극판(21)은 도해에 없는 와이어로 외부의 전기회로와 접속되어 있다.Moreover, since the armature 17, the spring shoe 18, the coil spring 19, the spring shoe 20 and the electronic plate 21 are all made of a conductive material, the valve 11 opens each of these members to provide an electromagnetic tube. It is electrically connected with 21, and the electrode plate 21 is connected with the external electric circuit by the wire which is not shown in figure.
전자밸브(1)의 입력구(input port)(30)는 연료 분사펌프(2)의 케이싱(2a)내에 형성된 통로(2b)에 의하여 고압실(6)과 연통하고 있으며, 전자밸브(1)를 닫친 상태에서 열린상태로 전환함에 따라 고압실(6)과 연료탱크(도해없음)에 통하고 있는 통로(31)와를 연통하게하며. 이에 따라 고압실(6)내의 연료압을 걍제적으로 낮출수 있는 구성으로 되어 있다.The input port 30 of the solenoid valve 1 communicates with the high pressure chamber 6 by a passage 2b formed in the casing 2a of the fuel injection pump 2, and the solenoid valve 1 And the passage 31 communicating with the high pressure chamber 6 and the fuel tank (not illustrated) is switched from the closed state to the open state. As a result, the fuel pressure in the high pressure chamber 6 can be reduced.
따라서 상술한 설명으로 부터 알수있는 바와같이 이 연료분사펌프(2)는 연료분압송중의 희망하는바 타이밍에 있어서 전자밸브(1)를 닫친상태에서 열린상태로 전환함에 따라 그 타이밍에서 연료의 압송이 중요하게 된다.Therefore, as can be seen from the above description, the fuel injection pump 2 transfers fuel at the timing as the solenoid valve 1 is switched to the open state at the desired timing during the fuel injection. This becomes important.
즉, 전자밸브(1)의 조작에 의하여 연료의 분사량을 제어할 수 있다.That is, the injection amount of fuel can be controlled by the operation of the solenoid valve 1.
다음에 제1도에 나타낸 전자밸브(1)의 동작에 대하여 설명한다.Next, the operation of the solenoid valve 1 shown in FIG. 1 will be described.
전자석(27)이 소자(消磁)상태에 있으면 밸브(11)는 코일스프링(19)에 의하여 아래쪽으로 강제로 밀어 내려져 있기 때문에 원추부(11c)는 대응하는 밸브시이트(16)로 부터 떨어져 있게되어 젼자밸브(1)는 열린상태로 되어 있다.When the electromagnet 27 is in the element state, the valve 11 is forcibly pushed down by the coil spring 19 so that the conical portion 11c is separated from the corresponding valve seat 16. The solenoid valve 1 is in an open state.
밸브(11) 의 내경부(1la) 의 뱌깥면 (11b) 에는, 절연층(15) 이 마련되어 있으므로, 밸브(11)와 안내블록(14)와의 사이는 전기적으로 절연상태로 되어 있으며, 따라서 전극판(21)과 본체(12)와의 사이는 비전도(non-conductive)상태로 되어 있다.Since the insulating layer 15 is provided in the outer surface 11b of the inner diameter part 1la of the valve 11, the valve 11 and the guide block 14 are electrically insulated, and therefore, the electrode The plate 21 and the main body 12 are in a non-conductive state.
전자석(27)이 여자되면, 전기자(17)가 전자석(27)에 흡인되며, 이때문에 밸브(11)가 상방으로 이동하고, 원추부(11c) 밸브시이트(16)에 착석하게 되어, 전자밸브(1)는 닫친상태로 된다.When the electromagnet 27 is excited, the armature 17 is attracted to the electromagnet 27, which causes the valve 11 to move upwards and to seat the valve seat 16 of the cone portion 11c. The valve 1 is in a closed state.
그결과, 밸브(11)와 본체(12)와의 사이는 전기적으로 접속된다.As a result, the valve 11 and the main body 12 are electrically connected.
이와같이 밸브(11), 본체(12) 및 절연층(15)에 의하여 전자밸브(1)의 개폐상태에 순응하여 온.오프 동작을하는 스위치가 구성되어 있으나, 이미 설명한 바와같이 안내구멍(13)의 상하에 마련한 대경부(13a), (13b)에 따라 밸브(11)의 에지부(11d), (11e)가 안내구멍(13)의 내주면에 접촉하지 않도록 하였으므로 절연층(15)이 에지부(1ld), (1le)에서 불완전하게 마련되었다 하여도, 이때문에 상술한 스위치의 기능이 손감되는 일은 없으며, 잡음의 발생도 없고 매우 신뢰성이 높은 스위치를 구성할 수 있다.In this way, the switch 11, the main body 12 and the insulating layer 15 is configured to switch on and off in response to the opening and closing state of the solenoid valve 1, but as described above, the guide hole 13 Since the edge portions 11d and 11e of the valve 11 do not contact the inner circumferential surface of the guide hole 13 in accordance with the large diameter portions 13a and 13b provided above and below the insulating layer 15, the edge portion Even if it is incompletely provided in (1ld) and (1le), therefore, the function of the switch mentioned above is not impaired, a noise can be produced, and a highly reliable switch can be constituted.
또 적당한 절연재료를 물리증착법으로 밸브(11)에 입혀서, 이에 따라 절연층(15)을 형성하면 이 절연층은 치밀하여 밸브와의 결합도가 강하기 때문에 내마모성이 뛰어나서 필요로하는 절연성을 장기간에 걸쳐서 유지할수 있다.If a suitable insulating material is applied to the valve 11 by physical vapor deposition, and thus the insulating layer 15 is formed, the insulating layer is dense and has a high bonding strength with the valve. Therefore, it is excellent in abrasion resistance and needs insulation for a long time. I can keep it.
더우기 절연층(15)을 형성하는 절연재료로서는, SiO2, AlO3그밖의 적당한 절연재료를 사용할 수 있다.Furthermore, as the insulating material for forming the insulating layer 15, SiO 2 , AlO 3, or other suitable insulating materials can be used.
상술한 바와같이, 안내구멍(13)의 상하에 대경부(13a), (13b)를 마련함에 따라, 밸브(11)의 에지부(11d), (11e)의 절연층의 불완전성에 의한 잡음의 발생을 유효하게 반지할 수 있는 구성으로 하였으나 이 대경부(13a)(13b)의 축선방향에 잇따른 폭은 밸브(11)의 이동량인 1.5mm 정도이면 좋으므로 밸브(11)의 지지안내동작에 전혀 영향을 주는 일은 없다.As described above, as the large diameter portions 13a and 13b are provided above and below the guide hole 13, the noise due to the imperfection of the insulating layers of the edge portions 11d and 11e of the valve 11 is eliminated. Although the diameter of the large diameter portions 13a and 13b, the width of the large diameter portions 13a and 13b in the axial direction should be about 1.5 mm, which is the movement amount of the valve 11, so that it is not possible to support the operation of the valve 11 at all. It does not affect anything.
본 고안에 의하면 상술한 바와같이 밸브의 바깥돌레에 마련하는 절연층을 물리증착법으로 형성하여도 밸브의 에지부의 절연층의 불완전성에 기인하는 잡음의 발생을 확고히 방지할 수 있으므로 물리증착법에 의한 견고한 절연층에 따라 내구성에 뛰어난 스위치를 구성할 수 있을뿐더러 스위치의 전기적동작을 확실히 할수 있는 매우 신뢰성이 높은 스위치를 전자밸브내에 마련할 수 있다.According to the present invention, even if the insulating layer provided on the outer dol of the valve is formed by the physical vapor deposition method as described above, it is possible to firmly prevent the occurrence of noise due to the imperfection of the insulating layer of the edge portion of the valve. Depending on the layer, a switch having excellent durability can be configured, and a highly reliable switch can be provided in the solenoid valve to ensure the electrical operation of the switch.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP85-006342 | 1985-01-22 | ||
| JP1985006342U JPH0237339Y2 (en) | 1985-01-22 | 1985-01-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR860009873U KR860009873U (en) | 1986-08-13 |
| KR920006360Y1 true KR920006360Y1 (en) | 1992-09-17 |
Family
ID=11635690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019860000326U KR920006360Y1 (en) | 1985-01-22 | 1986-01-15 | Solenoid valve |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH0237339Y2 (en) |
| KR (1) | KR920006360Y1 (en) |
| DE (1) | DE3601663A1 (en) |
| GB (1) | GB2171497A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR880005354A (en) * | 1986-10-08 | 1988-06-28 | 나까무라 겐조 | Electronic actuator |
| GB9104296D0 (en) * | 1991-03-01 | 1991-04-17 | Imi Pactrol | Valve |
| CN112984197A (en) * | 2021-02-04 | 2021-06-18 | 大连海事大学 | Fault-monitorable electromagnetic valve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4111178A (en) * | 1976-11-08 | 1978-09-05 | General Motors Corporation | Ignition system for use with fuel injected-spark ignited internal combustion engines |
| GB2125894B (en) * | 1982-08-26 | 1986-09-17 | Lucas Ind Plc | I.c. engine fuel injection nozzle |
| JPS60182351A (en) * | 1984-02-28 | 1985-09-17 | Diesel Kiki Co Ltd | Valve gear with switch |
-
1985
- 1985-01-22 JP JP1985006342U patent/JPH0237339Y2/ja not_active Expired
-
1986
- 1986-01-15 KR KR2019860000326U patent/KR920006360Y1/en not_active IP Right Cessation
- 1986-01-17 GB GB08601088A patent/GB2171497A/en not_active Withdrawn
- 1986-01-21 DE DE19863601663 patent/DE3601663A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE3601663A1 (en) | 1986-07-24 |
| JPS61123273U (en) | 1986-08-02 |
| KR860009873U (en) | 1986-08-13 |
| GB8601088D0 (en) | 1986-02-19 |
| GB2171497A (en) | 1986-08-28 |
| JPH0237339Y2 (en) | 1990-10-09 |
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