CN1550660A - Fuel injection device - Google Patents
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- CN1550660A CN1550660A CNA2004100432463A CN200410043246A CN1550660A CN 1550660 A CN1550660 A CN 1550660A CN A2004100432463 A CNA2004100432463 A CN A2004100432463A CN 200410043246 A CN200410043246 A CN 200410043246A CN 1550660 A CN1550660 A CN 1550660A
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Abstract
The invention provides a fuel injector in which a connecting clip can be reduced in cost and a rotation positioning tolerance can be lessened. There is provided the fuel injector 1A in which a connecting pipe 5 is provided in a fuel pipe 2, and a connecting portion 10a is provided at an end at a fuel inflow side of the valve casing 10 of a fuel injection valve 3. The connecting portion 10a is connected to an inside of the connecting pipe 5 with its axial direction defined as a connecting direction, the connecting clip 4 is fitted into the connecting portion 10a and the connecting pipe 5, and the connecting clip 4 prevents disengagement and transfer between the valve casing 10 and the connecting pipe 5 in the axial direction. In the fuel injector, there are provided a rotation positioning protrusion 8 in the connecting pipe 5, and a rotation positioning recess 13 open in the axial direction in the valve casing 10. A rotation positioning means 9A is provided in which the rotation positioning protrusion 8 engages with the rotation positioning recess 13 by fitting the connecting portion 10a of the valve casing 10 into the inside of the connecting pipe 5 to thereby connect the both, so that a mutual rotational direction is positioned.
Description
Technical field
The present invention relates to fuel injection system, particularly about the joint construction of fuel distribution tube and Fuelinjection nozzle, this fuel injection system supplies to Fuelinjection nozzle with the fuel in the fuel tank through fuel distribution tube, injects fuel into the air inlet side of internal-combustion engine by Fuelinjection nozzle.
Background technique
The technology of various joint constructions about fuel distribution tube and Fuelinjection nozzle has been proposed in the past.Te Biaoping 4-500259 communique discloses the fuel injection system as the one example.
The fuel injection system 100 of above-mentioned communique has as Figure 10 and shown in Figure 11: be connected the fuel tank side fuel distribution tube 101, be fixed on the suction tude side of internal-combustion engine Fuelinjection nozzle 102, be entrenched in connection on fuel distribution tube 101 and the Fuelinjection nozzle 102 with clip 103.
The connecting tube 104 outstanding underside sides that are arranged on fuel distribution tube 101 cylindraceous, the inner peripheral surface of this connecting tube 104 becomes the embedding hole 105 that connects the joint 108a of valve casing 108 described later by chimeric.In addition, on the outer circumferential face of connecting tube 104, the outstanding rotation positioning protrusion 106 that is provided with, the while gives prominence to that at the front end of the outer circumferential face of this connecting tube 104 anti-avulsion flange part 107 being set.
One distolateral (fuel inflow side) of the valve casing cylindraceous 108 of Fuelinjection nozzle 102 forms as joint 108a.On the outer circumferential face of this joint 108a, outstanding be provided with rotation positioning protrusion 109, the anti-avulsion that forms ring-type simultaneously is with all grooves 110.
Connect with clip 103 as Figure 12-shown in Figure 14, have joint 111 and begin to extend a pair of arm 112,112 of setting from the two ends of this joint 111.At the above-below direction of joint 111, rotation positioning recess 113,114 is set respectively.On a pair of arm 112,112, form anti-avulsion respectively with slotted eye 115, simultaneously in the inboard of a pair of arm 112,112, be respectively arranged with the circular-arc anti-avulsion of inner face tabling piece 116.
The order that is connected operation of fuel distribution tube 101 and Fuelinjection nozzle 102 then, is described.
The joint 108a of the valve casing 108 by making Fuelinjection nozzle 102 is fitted in the embedding hole 105 of connecting tube 104 of fuel distribution tube 101 and connects.When carrying out this connection, make the position consistency of sense of rotation of the rotation positioning protrusion 109 of the rotation positioning protrusion 106 of connecting tube 104 and valve casing 108.
Then, if make the rotation positioning recess 113,114 that connects with clip 103 involutory with respect to rotation positioning protrusion 106,109 positions of connecting tube 104 and valve casing 108, make and connect with clip 103 from the footpath direction near connecting tube 104 and valve casing 108, then connect a pair of arm 112, the 112 one side resiliently deformables with clip 103, one side is clamped the periphery of connecting tube 104 and valve casing 108 and approaching gradually.
Like this, if connection is close to and connecting tube 104 position contacting with the inner face of the linking department 111 of clip 103 always, then the anti-avulsion of connecting tube 104 is chimeric with slot part 115 with the anti-avulsion of a pair of arm 112,112 with flange part 107, and each anti-avulsion of a pair of arm 112,112 is chimeric with all groove 110 with the anti-avulsion of tabling piece 116 and valve casing 108.In addition, each rotation positioning protrusion 106,109 of connecting tube 104 and valve casing 108 inserts 113, the 114 interior and fastenings of rotation positioning recess up and down that connect with the linking department 111 of clip 103.In view of the above, finish the operation that is connected of fuel distribution tube 101 and Fuelinjection nozzle 102.
Axial disengagement between the connecting tube 104 of fuel distribution tube 101 and the valve casing 108 of Fuelinjection nozzle 102 is moved, and is by connecting with the anti-avulsion of clip 103 with the anti-avulsion of slotted eye 115 and connecting tube 104 with the chimeric of flange part 107 and be connected with the anti-avulsion of clip 103 anti-avulsion with tabling piece 116 and valve casing 108 and stop with the chimeric of all grooves 110.
In addition, the connecting tube 104 of fuel distribution tube 101 and the location of the sense of rotation of the valve casing 108 of Fuelinjection nozzle 102 are to carry out with the rotation positioning recess 113,114 of 2 positions of clip 103 and each rotation positioning protrusion 106,109 of connecting tube 104 and valve casing 108 by connection.That is, by connecting the axial anti-avulsion of carrying out the valve casing 108 of connecting tube 104 and Fuelinjection nozzle 102 with clip 103, and the location of sense of rotation.
[patent documentation 1]
Te Biaoping 4-500259 communique
But, in above-mentioned fuel injection system 100 in the past, because anti-avulsion must be set on connecting with clip 103 with slotted eye 115 and anti-avulsion tabling piece 116 rotation positioning recess 113,114 of totally 2 positions, are very complicated shapes so connect with clip 103, cost is very high.
In addition, because inserting, each rotation positioning protrusion 106,109 of the valve casing 108 of the connecting tube 104 of fuel distribution tube 101 and Fuelinjection nozzle 102 is connected with in each rotation positioning recess 113,114 of clip 103, be rotated the location of direction 2 positions, so need carry out correct rotation positioning simultaneously in these 2 positions.Therefore, the factor that produces deviation when rotation positioning is a lot, has the big problem of tolerance of rotation positioning.
The present invention is exactly in view of above-mentioned situation, the object of the present invention is to provide a kind of fuel injection system, can reduce the cost that connects with clip, and can reduce the tolerance of rotation positioning.
Summary of the invention
In order to achieve the above object, the described invention of first technological scheme is a kind of fuel injection system, connecting tube is set on fuel distribution tube, end at the fuel inflow side of the valve casing of Fuelinjection nozzle is provided with joint, with axle direction as connecting direction, the joint of this valve casing is connected in the above-mentioned connecting tube, and, be entrenched on the joint and above-mentioned connecting tube of above-mentioned valve casing with clip connecting, by this connection clip, stop the axial disengaging between above-mentioned valve casing and the above-mentioned connecting tube to be moved, connect above-mentioned fuel distribution tube and above-mentioned Fuelinjection nozzle, its purport is, rotation positioning protrusion is arranged on any one party of above-mentioned connecting tube and above-mentioned valve casing, will be arranged at the rotation positioning recess of axle direction opening on the opposing party, be connected in the above-mentioned connecting tube by joint with above-mentioned valve casing, above-mentioned rotation positioning protrusion is engaged with above-mentioned rotation positioning recess, the rotary positioning mechanism of the location of carrying out mutual sense of rotation is set.
According to above-mentioned formation, because the valve casing of the connecting tube of fuel distribution tube and Fuelinjection nozzle is not rotated the location by being connected with clip, so the function of location needn't be set on connecting with clip, in addition, the valve casing of the connecting tube of fuel distribution tube and Fuelinjection nozzle is to carry out rotation positioning on 1 position.Therefore, can simplify the formation that connects with clip, can reduce the cost that connects with clip, the factor that produces deviation when rotation positioning is reduced, can reduce the tolerance of rotation positioning.
In addition, the described invention of second technological scheme is a kind of fuel injection system, connecting tube is set on fuel distribution tube, end at the fuel inflow side of the valve casing of Fuelinjection nozzle is provided with joint, with axle direction as connecting direction, the joint of this valve casing is connected in the above-mentioned connecting tube, it constitutes, rotation positioning protrusion is arranged on any one party of above-mentioned connecting tube and above-mentioned valve casing, to be arranged at the rotation positioning recess of Zhou Fangxiang opening on the opposing party, the joint of above-mentioned valve casing is connected in the above-mentioned connecting tube, and,, above-mentioned rotation positioning protrusion is engaged with above-mentioned rotation positioning recess by rotation, carry out the location of mutual sense of rotation, the rotary positioning mechanism that stops axial disengaging to be moved is set simultaneously.
According to above-mentioned formation, the connecting tube of fuel distribution tube is not rotated the location by being connected with clip with the valve casing of Fuelinjection nozzle, does not carry out axial anti-avulsion by connecting with clip simultaneously.Therefore, do not use clip, can connect the joint of the valve casing of the connecting tube of fuel distribution tube and Fuelinjection nozzle yet even do not use basically to connect.Use connecting with under the situation of clip, can strengthen anti-avulsion etc., can further connect the joint of the valve casing of the connecting tube of fuel distribution tube and Fuelinjection nozzle securely.
Have again, the described invention of the 3rd technological scheme is a kind of fuel injection system, connecting tube is set on fuel distribution tube, end at the fuel inflow side of the valve casing of Fuelinjection nozzle is provided with joint, with axle direction as connecting direction, the joint of this valve casing is connected in the above-mentioned connecting tube, it constitutes, rotation positioning protrusion is arranged on any one party of above-mentioned connecting tube and above-mentioned valve casing, to be arranged on the opposing party at the outstanding midway rotation positioning recess that is provided with elastic protrusion of opening, by making above-mentioned elastic protrusion resiliently deformable, the joint of above-mentioned valve casing is fitted in the above-mentioned connecting tube, above-mentioned rotation positioning protrusion is engaged with above-mentioned rotation positioning recess, carry out the location of mutual sense of rotation, the rotary positioning mechanism that stops axial disengaging to be moved is set simultaneously.
According to above-mentioned formation, the connecting tube of fuel distribution tube is not rotated the location by being connected with clip with the valve casing of Fuelinjection nozzle, does not carry out axial anti-avulsion by connecting with clip simultaneously.Therefore, do not use clip, can connect the joint of the valve casing of the connecting tube of fuel distribution tube and Fuelinjection nozzle yet even do not use basically to connect.Use connecting with under the situation of clip, can strengthen anti-avulsion etc., can further connect the joint of the valve casing of the connecting tube of fuel distribution tube and Fuelinjection nozzle securely.
Description of drawings
Fig. 1 represents the 1st mode of execution of the present invention, is the stereogram of the Fuelinjection nozzle that uses in fuel injection system.
Fig. 2 represents the 1st mode of execution of the present invention, is the exploded perspective view at the main position of fuel injection system.
Fig. 3 represents the 1st mode of execution of the present invention, is the sectional view at the main position of fuel injection system.
Fig. 4 represents the 2nd mode of execution of the present invention, is the stereogram of the Fuelinjection nozzle that uses in fuel injection system.
Fig. 5 represents the 2nd mode of execution of the present invention, is the exploded perspective view at the main position of fuel injection system.
Fig. 6 represents the 2nd mode of execution of the present invention, is the sectional view at the main position of fuel injection system.
Fig. 7 represents the 3rd mode of execution of the present invention, is the stereogram of the Fuelinjection nozzle that uses in fuel injection system.
Fig. 8 represents the 3rd mode of execution of the present invention, is the exploded perspective view at the main position of fuel injection system.
Fig. 9 represents the 3rd mode of execution of the present invention, is the sectional view at the main position of fuel injection system.
Figure 10 represents example in the past, is by partial cut, the side view of the connecting tube of expression fuel distribution tube and the link position of Fuelinjection nozzle.
Figure 11 represents in the past example, is the figure that sees in the direction of the arrow A of Figure 10.
Figure 12 is the front view of the connection of example in the past with clip.
Figure 13 is the side view of the connection of example in the past with clip.
Figure 14 is the plan view of the connection of example in the past with clip.
Embodiment
(the 1st mode of execution)
Below, with reference to accompanying drawing, the 1st mode of execution after just the present invention being specialized describes.
Fig. 1 is the stereogram of the Fuelinjection nozzle 3 that uses in the fuel injection system 1A of the 1st mode of execution of the present invention, and Fig. 2 is the exploded perspective view at the main position of fuel injection system 1A, and Fig. 3 is the sectional view at the main position of fuel injection system 1A.
In Fig. 1-Fig. 3, fuel injection system 1A has: the Fuelinjection nozzle 3 of the metal fuel distribution tube 2 that is connected with no illustrated fuel tank side, the suction tude side that is fixed on no illustrated internal-combustion engine, be entrenched in connection on fuel distribution tube 2 and the Fuelinjection nozzle 3 with clip 4.
As shown in Figure 1 and Figure 2, metal connecting tube 5 cylindraceous is fixed on the following side of fuel distribution tube 2, and the inner peripheral surface of this connecting tube 5 becomes the embedding hole 6 that makes the joint 10a connection of valve casing 10 described later by chimeric.In addition, anti-avulsion is given prominence to the front ends of the outer circumferential face that is arranged on connecting tube 5 with flange part 7.This anti-avulsion with the part of flange part 7 on the also outstanding rotation positioning protrusion 8 that is provided with.
One distolateral (fuel inflow side) of the plastic valve casing 10 of the shell of formation Fuelinjection nozzle 3 forms as joint 10a cylindraceous.On the outer circumferential face of the joint 10a of this valve casing 10, the anti-avulsion that forms ring-type is with all grooves 11.In addition, on the outer circumferential face of the joint 10a of valve casing 10 the outstanding location that is provided with parts 12, this location be arranged on parts 12 axle direction towards above the rotation positioning recess 13 of opening.The opening of this rotation positioning recess 13, form along with from the inlet to the narrow and small gradually taper of depth.In addition, the width with the depth position of rotation positioning recess 13 is set at the width that equals or only be a bit larger tham the rotation positioning protrusion 8 of connecting tube 5.Like this, by these rotation positioning recess 13 and rotation positioning protrusion 8, constitute rotary positioning mechanism 9A.
As Fig. 2, shown in Figure 3, connection forms by the rubber-like metallic material with clip 4, has linking department 15 and extends a pair of elastic arm 16,16 who is provided with from the two ends of this linking department 15.On this a pair of elastic arm 16,16, the anti-avulsion that forms rectangle respectively simultaneously in a pair of elastic arm's 16,16 inboard, is provided with the circular-arc anti-avulsion of inner face tabling piece 18 with slotted eye 17 respectively.
The order that is connected operation of fuel distribution tube 2 and Fuelinjection nozzle 3 then, is described.
As shown in Figure 2, rotation positioning protrusion 8 as if the connecting tube 5 that makes fuel distribution tube 2 is involutory with the sense of rotation position of the rotation positioning recess 13 of the valve casing 10 of Fuelinjection nozzle 3, the joint 10a of the valve casing 10 of Fuelinjection nozzle 3 is fitted in the embedding hole 6 of connecting tube 5 of fuel distribution tube 2 connects, then the rotation positioning protrusion 8 of the connecting tube 5 of fuel distribution tube 2 engages with the rotation positioning recess 13 of valve casing 10.At this moment, by the O shape ring 19 of rubber system, the embedding hole 6 of sealed joint pipe 5 and the joint 10a of valve casing 10.
Then, anti-avulsion as if height and position that makes a pair of anti-avulsion usefulness tabling piece 18,18 that connects usefulness clip 4 and valve casing 10 is involutory with the height and position of all grooves 11, make connect with clip 4 approaching from the footpath direction of the valve casing 10 of the connecting tube 5 of fuel distribution tube 2 and Fuelinjection nozzle 3, then connect a pair of arm 16, the 16 one side resiliently deformables with clip 4, one side is clamped the periphery of valve casing 10 of the connecting tube 5 of fuel distribution tube 2 and Fuelinjection nozzle 3 and approaching gradually.
Like this, be close to location usefulness parts 12 position contacting with valve casing 10 if connect inner face with the linking department 15 of clip 4, then the anti-avulsion of connecting tube 5 is chimeric with slotted eye 17 with each anti-avulsion of a pair of arm 16,16 with flange part 7, and each anti-avulsion of a pair of arm 16,16 is chimeric with all groove 11 with the anti-avulsion of tabling piece 18 and valve casing 10.In view of the above, as shown in Figure 3, finish the operation that is connected of fuel distribution tube 2 and Fuelinjection nozzle 3.
Axial disengagement between the connecting tube 5 of fuel distribution tube 2 and the valve casing 10 of Fuelinjection nozzle 3 is moved, by connecting with the anti-avulsion of clip 4 with the anti-avulsion of slotted eye 17 and connecting tube 5 with the chimeric of flange part 7 and be connected with the anti-avulsion of clip 4 anti-avulsion with tabling piece 18 and valve casing 10 and stop with the chimeric of all grooves 11.In addition, the connecting tube 5 of fuel distribution tube 2 and the location of the sense of rotation of the valve casing 10 of Fuelinjection nozzle 3 are undertaken by the rotation positioning protrusion 8 of connecting tube 5 and the rotation positioning recess 13 of valve casing 10.
According to above-mentioned formation, because the valve casing 10 of the connecting tube 5 of fuel distribution tube 2 and Fuelinjection nozzle 3 is not rotated the location by being connected with clip 4, so needn't on connecting, locating function be set with clip 4, in addition, the valve casing 10 of the connecting tube 5 of fuel distribution tube 2 and Fuelinjection nozzle 3 is to carry out rotation positioning on 1 position.Therefore, can simplify the formation that connects with clip 4, can reduce the cost that connects with clip 4, the inconsistent factor when rotation positioning is reduced, can reduce the tolerance of rotation positioning.
(the 2nd mode of execution)
Below, with reference to accompanying drawing, the 2nd mode of execution after just the present invention being specialized describes.
Fig. 4 is the stereogram of the Fuelinjection nozzle 3 that uses in the fuel injection system 1B of the 2nd mode of execution of the present invention, and Fig. 5 is the exploded perspective view at the main position of fuel injection system 1B, and Fig. 6 is the sectional view at the main position of fuel injection system 1B.
In Fig. 4-Fig. 6, the fuel injection system 1B of the 2nd mode of execution and above-mentioned the 1st mode of execution are same, have fuel distribution tube 2, Fuelinjection nozzle 3 and be connected to use clip 4, compare with above-mentioned the 1st mode of execution, and only be the formation difference of rotation positioning recess 20.That is, rotation positioning recess 20 forms and is not at axle direction but at the circumferencial direction opening.The opening of this rotation positioning recess 20 form along with from the inlet to the narrow and small gradually taper of depth.So, the height dimension of the depth position of the opening of rotation positioning recess 20 is set at the thickness (height dimension) that equals or only be a bit larger tham the rotation positioning protrusion 8 of connecting tube 5, by these rotation positioning recess 20 and rotation positioning protrusion 8, constitute rotary positioning mechanism 9B.
In addition, because other formation is identical with above-mentioned the 1st mode of execution,, omit its detailed explanation so give identical symbol to the component part identical with above-mentioned the 1st mode of execution.
In the 2nd mode of execution, the joint 10a of the valve casing 10 of the connecting tube 5 of fuel distribution tube 2 and Fuelinjection nozzle 3 be connected operation the time, the joint 10a of valve casing 10 is fitted in the embedding hole 6 of connecting tube 5 to be connected, and by making Fuelinjection nozzle 3, thereby rotation positioning protrusion 8 is engaged with rotation positioning recess 20 to the rotation of the direction of arrow of Fig. 4.Therefore, axial disengaging between the connecting tube 5 of fuel distribution tube 2 and the valve casing 10 of Fuelinjection nozzle 3 is moved, stop with clip 4 by the connection that resembles the 1st mode of execution, also stop with parts 12 simultaneously by rotation positioning protrusion 8 and the rotation positioning that forms rotation positioning recess 20.
According to above-mentioned formation, can not carry out axial anti-avulsion with clip 4 simultaneously not by connecting valve casing 10 rotation positioning of carrying out the connecting tube 5 and the Fuelinjection nozzle 3 of fuel distribution tube 2 with clip 4 by connecting.Therefore, connect with clip 4, also can connect the joint 10a of the valve casing 10 of the connecting tube 5 of fuel distribution tube 2 and Fuelinjection nozzle 3 even do not use basically.As the 2nd mode of execution, use connecting, can strengthen anti-avulsion etc. with under the situation of clip 4, can further connect the joint 10a of the valve casing 10 of the connecting tube 5 of fuel distribution tube 2 and Fuelinjection nozzle 3 securely.
(the 3rd mode of execution)
Below, with reference to accompanying drawing, the 3rd mode of execution after just the present invention being specialized describes.
Fig. 7 is the stereogram of the Fuelinjection nozzle 3 that uses in the fuel injection system 1C of the 3rd mode of execution of the present invention, and Fig. 8 is the exploded perspective view at the main position of fuel injection system 1C, and Fig. 9 is the sectional view at the main position of fuel injection system 1C.
In Fig. 7-Fig. 9, the fuel injection system 1C of the 3rd mode of execution and above-mentioned the 1st mode of execution are same, have fuel distribution tube 2, Fuelinjection nozzle 3 and be connected to use clip 4, compare with above-mentioned the 1st mode of execution, and only be that the formation of rotation positioning recess 21 is different.That is, rotation positioning recess 21 forms at axial upper side opening, and a pair of elastic protrusion 22,22 is given prominence to ground relatively and is arranged on its opening midway.In addition, with the outstanding zone that is provided with a pair of elastic protrusion 22,22 of rotation positioning recess 21, be set at narrowlyer, the width of the depth position of rotation positioning recess 21 is set at the width that equals or only be a bit larger tham the rotation positioning protrusion 8 of connecting tube 5 than the width of the rotation positioning protrusion 8 of connecting tube 5.Like this, by these rotation positioning recess 21 and rotation positioning protrusion 8, constitute rotary positioning mechanism 9C.
In addition, because other formation is identical with above-mentioned the 1st mode of execution,, omit its detailed explanation so give identical symbol to the component part identical with above-mentioned the 1st mode of execution.
In the 3rd mode of execution, the joint 10a of the valve casing 10 of the connecting tube 5 of fuel distribution tube 2 and Fuelinjection nozzle 3 be connected operation the time, connect if the joint 10a of valve casing 10 is fitted in the embedding hole 6 of connecting tube 5, then the rotation positioning protrusion 8 of connecting tube 5 bumps against each tapering of a pair of elastic protrusion 22,22.If further chimeric from this collision status, the insertion of rotation positioning protrusion 8 is allowed in then a pair of elastic protrusion 22,22 compressive strains.If rotation positioning protrusion 8 inserts the position also darker than a pair of elastic protrusion 22,22, then a pair of elastic protrusion 22,22 elastic resets are out of shape, and rotation positioning protrusion 8 engages with rotation positioning recess 21.Therefore, axial disengaging between the connecting tube 5 of fuel distribution tube 2 and the valve casing 10 of Fuelinjection nozzle 3 is moved, stop with clip 4 by the connection that resembles the 1st mode of execution, also a pair of elastic protrusion 22,22 by rotation positioning protrusion 8 and rotation positioning recess 21 stops simultaneously.
According to above-mentioned formation, can not carry out axial anti-avulsion with clip 4 simultaneously not by connecting valve casing 10 rotation positioning of carrying out the connecting tube 5 and the Fuelinjection nozzle 3 of fuel distribution tube 2 with clip 4 by connecting.Therefore, connect with clip 4, also can connect the joint 10a of the valve casing 10 of the connecting tube 5 of fuel distribution tube 2 and Fuelinjection nozzle 3 even do not use basically.As the 3rd mode of execution, use connecting, can strengthen anti-avulsion etc. with under the situation of clip 4, can further connect the joint 10a of the valve casing 10 of the connecting tube 5 of fuel distribution tube 2 and Fuelinjection nozzle 3 securely.
In addition, this invention also can be embodied as the mode of execution of following such other.In the mode of execution of following other, can obtain effect identical and effect with the respective embodiments described above.
(1) in above-mentioned 1-the 3rd mode of execution, be rotation positioning protrusion 8 and rotation positioning recess 13,20,21 are separately positioned on connecting tube 5 and the valve casing 10 and constitute.Relative therewith, also can be rotation positioning recess and rotation positioning protrusion are separately positioned on connecting tube 5 and the valve casing 10 and constitute.By such formation, also can obtain same effect.
(2) in the above-mentioned the 2nd and the 3rd mode of execution, fuel injection system 1B, 1C have fuel distribution tube 2 and Fuelinjection nozzle 3, and do not use the formation that connects with clip 4.By such formation, can cut down the part kind, realize cost degradation, connect the simplicity of operation etc.
Have, just the technological thought beyond the claim that can grasp from the respective embodiments described above is together put down in writing with its effect below again.
(A) in the described fuel injection system 1A of first technological scheme, be a kind of fuel injection system, it is characterized in that, rotation positioning protrusion 8 and rotation positioning recess 13 are separately positioned on connecting tube 5 and the valve casing 10.
Constitute according to this, can obtain the action effect same with the invention of first technological scheme.
(B) in the described fuel injection system 1A of first technological scheme, be a kind of fuel injection system, it is characterized in that, rotation positioning recess and rotation positioning protrusion are separately positioned on connecting tube 5 and the valve casing 10.
Constitute according to this, can obtain the action effect same with the invention of first technological scheme.
(C) in the described fuel injection system 1B of second technological scheme, be a kind of fuel injection system, it is characterized in that, rotation positioning protrusion 8 and rotation positioning recess 20 are separately positioned on connecting tube 5 and the valve casing 10.
Constitute according to this, can obtain the action effect same with the invention of second technological scheme.
(D) in the described fuel injection system 1B of second technological scheme, be a kind of fuel injection system, it is characterized in that, rotation positioning recess and rotation positioning protrusion are separately positioned on connecting tube 5 and the valve casing 10.
Constitute according to this, can obtain the action effect same with the invention of second technological scheme.
(E) in (C), (D) described fuel injection system 1B, be a kind of fuel injection system, it is characterized in that to have to connect and use clip 4, this connection stops the axial disengaging between connecting tubes 5 and the valve casing 10 to be moved with clip 4.
Constitute according to this, can strengthen anti-avulsion between connecting tube 5 and the valve casing 10 etc., can further connect connecting tube 5 and valve casing 10 securely.
(F) in the described fuel injection system 1C of the 3rd technological scheme, be a kind of fuel injection system, it is characterized in that, rotation positioning protrusion 8 and rotation positioning recess 21 are separately positioned on connecting tube 5 and the valve casing 10.
Constitute according to this, can obtain the action effect same with the invention of the 3rd technological scheme.
(G) in the described fuel injection system 1C of the 3rd technological scheme, be a kind of fuel injection system, it is characterized in that, rotation positioning recess and rotation positioning protrusion are separately positioned on connecting tube 5 and the valve casing 10.
Constitute according to this, can obtain the action effect same with the invention of the 3rd technological scheme.
(H) in (F), (G) described fuel injection system 1C, be a kind of fuel injection system, it is characterized in that to have to connect and use clip 4, this connection stops the axial disengaging between connecting tubes 5 and the valve casing 10 to be moved with clip 4.
Constitute according to this, can strengthen anti-avulsion between connecting tube 5 and the valve casing 10 etc., can further connect connecting tube 5 and valve casing 10 securely.
Claims (3)
1. fuel injection system, connecting tube is set on fuel distribution tube, end at the fuel inflow side of the valve casing of Fuelinjection nozzle is provided with joint, with axle direction as connecting direction, the joint of this valve casing is connected in the above-mentioned connecting tube, and, be entrenched on the joint and above-mentioned connecting tube of above-mentioned valve casing with clip connecting, by this connection clip, stop the axial disengaging between above-mentioned valve casing and the above-mentioned connecting tube to be moved, connect above-mentioned fuel distribution tube and above-mentioned Fuelinjection nozzle, it is characterized in that
Rotation positioning protrusion is arranged on any one party of above-mentioned connecting tube and above-mentioned valve casing, to be arranged at the rotation positioning recess of axle direction opening on the opposing party, be connected in the above-mentioned connecting tube by joint above-mentioned valve casing, above-mentioned rotation positioning protrusion is engaged with above-mentioned rotation positioning recess, the rotary positioning mechanism of the location of carrying out mutual sense of rotation is set.
2. a fuel injection system is provided with connecting tube on fuel distribution tube, in the end of the fuel inflow side of the valve casing of Fuelinjection nozzle joint is set, and, as connecting direction the joint of this valve casing is connected in the above-mentioned connecting tube with axle direction, it is characterized in that,
Rotation positioning protrusion is arranged on any one party of above-mentioned connecting tube and above-mentioned valve casing, to be arranged at the rotation positioning recess of Zhou Fangxiang opening on the opposing party, the joint of above-mentioned valve casing is connected in the above-mentioned connecting tube, and, by rotation above-mentioned rotation positioning protrusion is engaged with above-mentioned rotation positioning recess, carry out the location of mutual sense of rotation, the rotary positioning mechanism that stops axial disengaging to be moved is set simultaneously.
3. a fuel injection system is provided with connecting tube on fuel distribution tube, in the end of the fuel inflow side of the valve casing of Fuelinjection nozzle joint is set, and, as connecting direction the joint of this valve casing is connected in the above-mentioned connecting tube with axle direction, it is characterized in that,
Rotation positioning protrusion is arranged on any one party of above-mentioned connecting tube and above-mentioned valve casing, to be arranged on the opposing party at the outstanding midway rotation positioning recess that is provided with elastic protrusion of opening, by above-mentioned elastic protrusion resiliently deformable is fitted to the joint of above-mentioned valve casing in the above-mentioned connecting tube, above-mentioned rotation positioning protrusion is engaged with above-mentioned rotation positioning recess, carry out the location of mutual sense of rotation, the rotary positioning mechanism that stops axial disengaging to be moved is set simultaneously.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003135914A JP2004339992A (en) | 2003-05-14 | 2003-05-14 | Fuel injector |
| JP135914/2003 | 2003-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1550660A true CN1550660A (en) | 2004-12-01 |
Family
ID=33526039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100432463A Pending CN1550660A (en) | 2003-05-14 | 2004-05-14 | Fuel injection device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2004339992A (en) |
| CN (1) | CN1550660A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102472223A (en) * | 2009-08-12 | 2012-05-23 | 罗伯特·博世有限公司 | Plug connection |
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| KR100692730B1 (en) | 2005-08-17 | 2007-03-09 | 현대자동차주식회사 | Fixing device for engine injector |
| JP2010255483A (en) * | 2009-04-23 | 2010-11-11 | Ihi Corp | Turbocharger |
| JP5315132B2 (en) | 2009-05-29 | 2013-10-16 | 株式会社ケーヒン | Mounting structure of fuel injection valve |
| JP5292215B2 (en) * | 2009-07-29 | 2013-09-18 | 本田技研工業株式会社 | Fuel supply device for multi-cylinder internal combustion engine |
| JP6119446B2 (en) | 2013-06-18 | 2017-04-26 | スズキ株式会社 | Delivery pipe |
| JP6304759B2 (en) * | 2014-06-30 | 2018-04-04 | ダイハツ工業株式会社 | Method for assembling fuel supply apparatus and jig used therefor |
| JP6274524B2 (en) * | 2014-06-30 | 2018-02-07 | ダイハツ工業株式会社 | Fuel supply device assembly method and clip |
| JP6347485B2 (en) * | 2014-10-14 | 2018-06-27 | ダイハツ工業株式会社 | Injector unit for internal combustion engine |
-
2003
- 2003-05-14 JP JP2003135914A patent/JP2004339992A/en active Pending
-
2004
- 2004-05-14 CN CNA2004100432463A patent/CN1550660A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102472223A (en) * | 2009-08-12 | 2012-05-23 | 罗伯特·博世有限公司 | Plug connection |
| CN102472223B (en) * | 2009-08-12 | 2015-04-22 | 罗伯特·博世有限公司 | Plug connection |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004339992A (en) | 2004-12-02 |
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