KR20230092234A - An injector having spring adjustment tube - Google Patents

Abstract

The present invention relates to an injector provided with a spring adjustment tube, and more particularly, relates to an injector provided with a spring adjustment tube in which buckling is suppressed during spring assembly and eccentric load is prevented, and the spring adjustment tube is provided. An injector comprising: an injector housing (101); a magnetic core part 200 inserted into the injector housing 101; a spring adjustment tube 300 fixed inside the magnetic core part 200; an armature unit 400 fixed to an upper end of a needle shaft 103 provided below the spring adjustment tube 300 inside the injector housing 101 and transporting fuel; The armature part 400 is allowed to rise in a predetermined direction in a direction adjacent to the spring adjustment tube 300 by an electric signal applied to the injector housing 101, and the injector housing 101 When the electrical signal is released, one side is extrapolated to the spring adjustment tube 300 by a predetermined length to push the armature unit 400 in a direction away from the spring adjustment tube 300, and the other side a spring 500 inserted into the armature part 400; By providing an injector provided with a spring adjustment tube including, buckling is suppressed during assembly of the spring and eccentric load is prevented, thereby exhibiting the strength of preventing deterioration in injector performance.

Description

An injector having spring adjustment tube}

The present invention relates to an injector equipped with a spring adjustment tube, and more particularly, to an injector equipped with a spring adjustment tube in which eccentric load is prevented by suppressing buckling during spring assembly.

An injector for fuel injection of a vehicle is a device installed in an engine and injecting fuel supplied at a predetermined pressure into a combustion chamber of the engine according to an operation instruction of an ECU.

On the other hand, in order for the injector to inject a micro flow rate (dynamic flow rate), it is necessary to adjust the spring installed in the injector, and a spring compression device for this is installed in the injector.

At this time, the spring adjustment tube is a part that helps the spring to be fastened in place.

Meanwhile, when installing the spring to the injector, the spring should be seated on the upper end of the armature and compressed by the spring adjustment tube.

At this time, the conventional spring adjustment tube has a problem in that alignment of the spring is disturbed in the process of compressing the spring of the injector.

In other words, since the conventional spring adjustment tube has a buckling phenomenon when the spring is fastened, the spring buckling may occur, and the performance of the injector is deteriorated due to the eccentric load caused by the buckling.

In addition, in the prior art, in order to minimize such problems at the time of fastening the spring, complex assembly equipment must be provided or a quality inspection procedure for assembly is required, which reduces economic feasibility and productivity.

JP 4324880 B2

An object of the present invention to overcome the above problems of the prior art is to provide an injector provided with a spring adjustment tube in which buckling is suppressed during spring assembly and eccentric load is prevented.

An injector provided with a spring adjustment tube, comprising: an injector housing (101); a magnetic core part 200 inserted into the injector housing 101; a spring adjustment tube 300 fixed inside the magnetic core part 200; an armature unit 400 fixed to an upper end of a needle shaft 103 provided below the spring adjustment tube 300 inside the injector housing 101 and transporting fuel; The electric signal applied to the injector housing 101 allows the armature part 400 to rise in a predetermined direction in a direction adjacent to the spring adjustment tube 300, and the injector housing 101 When the electrical signal is released, one side is extrapolated to the spring adjustment tube 300 by a predetermined length to push the armature unit 400 in a direction away from the spring adjustment tube 300, and the other side a spring 500 inserted into the armature part 400; and an injector provided with a spring adjustment tube comprising a.

In addition, the spring adjustment tube 300 includes a leg part 310 to which the spring 500 is extrapolated; a trunk portion 330 having a larger average diameter than the leg portion 310 and having a flow path on an outer circumferential surface thereof; a stepped portion 320 forming a boundary between the leg portion 310 and the body portion 330 and supporting an upper end of the spring 500; a head part 340 forming the top of the spring adjustment tube 300; An injector provided with a spring adjustment tube, characterized in that it comprises a.

In addition, the spring adjustment tube 300 includes an injector provided with a spring adjustment tube, characterized in that it includes a leg portion 310 to which the spring 500 is extrapolated.

In addition, the leg portion 310 includes a circular bottom portion 311 as a flat surface forming the lowermost end of the spring adjustment tube 300; a column part 312 formed of a round part constituting a height part of the spring adjustment tube 300, and having a bottom part 311 and a cylindrical pillar part; An injector provided with a spring adjustment tube, characterized in that it comprises a.

In addition, the stepped portion 320 includes an injector equipped with a spring adjustment tube, characterized in that the flow path of the upper light and the lower light is alternately formed along the circumference.

In addition, the pillar portion 312 includes an injector provided with a spring adjustment tube, characterized in that it has a tapered portion of upper and lower narrows from the outer circumferential surface of the bottom portion 311 to a predetermined height.

In addition, a plurality of flow passages are provided, and a boundary between a pair of flow passages adjacent to each other in the vertical direction of the spring adjustment tube 300 is generally “N” shaped, characterized in that the spring adjustment tube is provided Include injectors.

In addition, the head portion 340 includes an injector equipped with a spring adjustment tube, characterized in that the edges are symmetrical to each other based on a plane passing through the center point of the head portion 340 .

In addition, the rim of the head part 340 includes an injector provided with a spring adjustment tube, characterized in that convex parts and concave parts are formed alternately with each other.

In addition, the injector provided with a spring adjustment tube, characterized in that the rim length of the convex portion is shorter than the rim length of the concave portion.

In addition, the spring adjustment tube 300 includes an injector provided with a spring adjustment tube, characterized in that the C 5210R-H metal material.

In addition, the flow path unit includes an injector provided with a spring adjustment tube, characterized in that a filter for filtering foreign substances contained in the fuel is installed.

In addition, the injector housing 101; a magnetic core part 200 inserted into the injector housing 101; a spring adjustment tube 300 fixed inside the magnetic core part 200; an armature unit 400 fixed to an upper end of a needle shaft 103 provided below the spring adjustment tube 300 inside the injector housing 101 and transporting fuel; The electric signal applied to the injector housing 101 allows the armature part 400 to rise in a predetermined direction in a direction adjacent to the spring adjustment tube 300, and the injector housing 101 When the electrical signal is released, one side is extrapolated to the spring adjustment tube 300 by a predetermined length to push the armature unit 400 in a direction away from the spring adjustment tube 300, and the other side a spring 500 inserted into the armature part 400; In the injector provided with the spring adjustment tube, the spring adjustment tube 300 includes a method of manufacturing the spring adjustment tube manufactured through a deep drawing method.

According to the present invention as described above, there are the following effects.

First, when assembling the spring, buckling is suppressed and eccentric load is prevented, thereby exhibiting the strength of preventing performance deterioration of the injector.

Second, the edge of the head part 340 may have a symmetrical (opposite) shape folded and overlapped based on an imaginary plane passing through the center point of the head part 340, so that fluid vibration generated when fuel passes can be offset. It has the advantage of providing a more vibration-reducing injector.

Third, since the plurality of flow path parts can be provided to have upper and lower narrow shapes alternately, the flow of fuel becomes smooth and the reaction force by the spring 500 is more effectively dispersed, providing the advantage of enabling stable spring fixation. .

Fourth, the plurality of flow passages are provided to have upper and lower narrow shapes alternately, and thereby more stably and effectively transmit the spring reaction force through a convex portion formed between a pair of adjacent flow passages among the plurality of flow passages. Since it can be dispersed and absorbed, it has the advantage of improving durability as well as improving injector performance.

Fifth, when the spring 500 is installed on the leg portion 310, alignment between the center line in the longitudinal direction of the spring 500 and the center line in the longitudinal direction of the spring adjustment tube is completed, thereby preventing buckling when the spring 500 is elastically deformed. Injector performance is maximized by preventing the occurrence of the injector, and the ease of installation of the spring 500 is increased so that productivity can be improved.

Sixth, the plurality of flow passages are provided to have upper and lower narrow shapes alternately, and thus, the spring reaction force is more stable and Since it can be effectively dispersed and absorbed, it has the advantage of improving durability as well as improving injector performance.

1(a) is an injector provided with a spring adjustment tube according to a preferred embodiment of the present invention.
1(b) is an enlarged peripheral view of an injector equipped with a spring adjustment tube according to a preferred embodiment of the present invention.
2 is a detailed enlarged view of an injector equipped with a spring adjustment tube according to a preferred embodiment of the present invention.
3 is a perspective view of a spring adjustment tube according to a preferred embodiment of the present invention.
4 is a top view of a spring adjustment tube according to a preferred embodiment of the present invention.
5 is an enlarged perspective view of a spring adjustment tube according to a preferred embodiment of the present invention.
6 is a state in which a spring is inserted and installed in a leg portion of a spring adjustment tube according to a preferred embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

In describing each figure, like reference numbers are used for like elements.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The term "and/or" includes any combination of a plurality of related listed items or any of a plurality of related listed items.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, it should not be interpreted in an ideal or excessively formal meaning. Should not be.

Directionality is defined prior to description.

Pointing relatively downward in the concept of up and down, such as down, down, and down, is a spring adjustment tube on an imaginary line connecting the center of the needle shaft 103 from the center of the spring adjustment tube 300 with reference to FIG. It should be understood that 300 refers to the direction of the lead pipe 102, and pointing relatively upward in the concept of up and down, such as upward, upward, upward, etc., means the opposite direction.

On the other hand, the lateral direction means the direction of a line segment perpendicular to the imaginary line, and for example, the lateral direction of the spring adjustment tube 300 refers to the spring adjustment tube 300 and the injector housing in FIG. (101) is a line connecting each of the same height points, and a line connecting each of the same height points of the spring adjustment tube 300 and the injector housing 101 is the spring adjustment tube 300 The imaginary line connecting the center of the needle shaft 103 from the center is perpendicular to each other.

On the other hand, the in-place alignment may mean an alignment state in which the longitudinal center line of the installed spring 500 is aligned with a virtual line connecting the center of the head part 340 and the center of the bottom part 311. .

Buckling refers to out-of-order behavior.

1(a) is an injector equipped with a spring adjustment tube according to a preferred embodiment of the present invention, and FIG. 1(b) is an enlarged view of the injector equipped with a spring adjustment tube according to a preferred embodiment of the present invention. .

2 is a detailed enlarged view of an injector equipped with a spring adjustment tube according to a preferred embodiment of the present invention.

An injector equipped with a spring adjustment tube according to a preferred embodiment of the present invention includes an injector housing 101, a lead pipe 102, a needle shaft 103, an electromagnet unit 110, a magnetic core unit 200, a spring advance It may include a maintenance tube 300, an armature unit 400, and a spring 500.

More specifically, the electromagnet unit 110 is provided inside the injector housing 101 to form a magnetic field according to the application of electricity.

The lead pipe 102 is inserted into the injector housing 101 from the lower side of the injector housing 101 .

The needle shaft 103 is provided to enable fluid communication along the longitudinal direction of the lead pipe 102 at the center of the longitudinal direction of the lead pipe 102 inside the lead pipe 102 .

The armature unit 400 is provided to be able to slide up and down on the lead pipe 102, and the needle shaft 103 is interpolated and fixed to the armature unit 400.

The magnetic core part 200 is inserted and fixedly installed inside the injector housing 101, and may be provided as an electromagnet that generates magnetic force depending on whether a magnetic field is generated by interlocking with the electromagnet part 110.

Meanwhile, the spring adjustment tube 300 is accommodated and fixedly installed inside the magnetic core unit 200, and fuel is fluid between the inner circumferential surface of the magnetic core unit 200 and the outer circumferential surface of the spring adjustment tube 300. can communicate

More specifically, at least one flow path portion is formed on the outer circumferential surface of the spring adjustment tube 300 to allow fuel to flow into the needle shaft 103 along the flow path portion.

In addition, since the flow path portion may be formed in a curved shape formed by rounding the boundary, there is an effect that foreign substances can be filtered when the filter unit is provided in the flow path portion.

Meanwhile, the spring 500 has one side supported by the armature unit 400 and the other side supported by the spring adjustment tube 300 so that the spring adjustment tube 300 and the armature unit 400 are connected to each other. Provides a repulsive force in the away direction.

In other words, when electricity is not provided to the injector equipped with the spring adjustment tube according to a preferred embodiment of the present invention, the armature unit 400 is moved by the spring adjustment tube 300 due to the repulsive force of the spring 500. It may be pushed in a direction away from , that is, in a downward direction to descend inside the lead pipe 102 .

Conversely, when electricity is applied to the injector provided with the spring adjustment tube according to a preferred embodiment of the present invention, the magnetic core part 200 is generated by the electric force due to the interaction between the electromagnet part 110 and the magnetic core part 200. becomes magnetized, so that the armature part 400 is attracted to the magnetic core part 200, so that the magnetized armature part 400 overcomes the repulsive force of the spring 500 and moves upward.

Therefore, the spring 500 resists the sliding elevation operation of the magnetized armature unit 400 according to the electrical switching operation (applying electricity or shorting the electricity) of the injector equipped with the spring adjustment tube according to a preferred embodiment of the present invention. , which provides the force for the sliding-down motion of the armature unit 400.

Meanwhile, alignment of the spring 500 is very important when the armature unit 400 moves up and down according to the electrical switching operation of the injector equipped with the spring adjustment tube according to the preferred embodiment of the present invention.

Because, as described above, if the spring 500 is not supported in the correct position by the spring adjustment tube 300, a buckling phenomenon in which the spring 500 is bent laterally when the armature unit 400 moves up and down occurs. This is because it may occur, thereby causing a decrease in injector performance and durability.

The spring adjustment tube according to a preferred embodiment of the present invention prevents such a buckling phenomenon, which will be described in more detail with reference to FIGS. 3 to 6 .

Figure 3 is a perspective view of a spring adjustment tube according to a preferred embodiment of the present invention, Figure 4 is a top view of the spring adjustment tube according to a preferred embodiment of the present invention, Figure 5 is a preferred embodiment of the present invention 6 is an enlarged perspective view of the spring adjustment tube according to the preferred embodiment of the present invention, and Figure 6 is a state in which the spring is inserted and installed in the leg portion of the spring adjustment tube according to a preferred embodiment of the present invention.

The spring adjustment tube 300 may include a leg part 310 , a stepped part 320 , a body part 330 and a head part 340 .

The leg part 310 may include a bottom part 311 and a pillar part 312 .

The bottom portion 311 is a flat surface forming the lowermost end of the spring adjustment tube 300 and may have a circular shape.

The pillar portion 312 is a round portion constituting a height portion of the spring adjustment tube 300, and the overall shape may be a cylinder having a bottom portion 311 at the lower end.

In other words, the leg portion 310 may be a cylinder having a predetermined height as a whole.

The stepped portion 320 may be the lowermost surface of the body portion 330, and in other words, the stepped portion 320 may be a boundary surface between the pillar portion 312 and the body portion 330.

The body part 330 has a first flow path part 330-1, a second flow path part 330-2, a third flow path part 330-3, a fourth flow path part 330-4, and a fifth flow path part 330-4 on the outer circumferential surface. The passage part 330-5, the sixth passage part 330-6, the seventh passage part 330-7, the eighth passage part 330-8, the ninth passage part 330-9, and the tenth passage part 330-9. The passage part 330-10, the eleventh passage part 330-11, the twelfth passage part 330-12, the seventh convex part 330-13, the eighth convex part 330-14, the ninth A convex portion 330-15 and a tenth convex portion 330-16 may be included.

The first flow path part 330-1, the second flow path part 330-2, the third flow path part 330-3, the fourth flow path part 330-4, the fifth flow path part 330-5, The sixth flow path part 330 - 6 is composed of flow path parts extending downward, and each of them may be of the same shape.

In other words, the first flow path part 330-1, the second flow path part 330-2, the third flow path part 330-3, the fourth flow path part 330-4, and the fifth flow path part 330-3. 5), the sixth flow passage 330-6 may have a lower beam angular shape.

Meanwhile, the seventh flow path part 330-7, the eighth flow path part 330-8, the ninth flow path part 330-9, the tenth flow path part 330-10, and the eleventh flow path part 330-11 ), the twelfth flow passage 330 - 12 is composed of flow passages extending upward, and each of them may also be of the same shape.

In other words, the seventh flow path part 330-7, the eighth flow path part 330-8, the ninth flow path part 330-9, the tenth flow path part 330-10, and the eleventh flow path part 330-10. 11), the twelfth passage portion 330-12 may have an upper and lower narrow shape.

On the other hand, when looking at the outer circumferential surface of the body portion 330 in a clockwise direction at the same height with respect to the lateral direction, the first flow path portion 330-1, the seventh flow path portion 330-7, and the second flow path portion 330 -2), the eighth flow path part 330-8, the third flow path part 330-3, the ninth flow path part 330-9, the fourth flow path part 330-4, and the tenth flow path part 330 -10), the fifth flow path unit 330-5, the eleventh flow path unit 330-11, the sixth flow path unit 330-6, the twelfth flow path unit 330-12, and the first flow path unit 330 -1) can be formed in order.

In other words, the plurality of passage parts may be provided to alternately have upper and lower narrow shapes.

Meanwhile, the head portion 340 forms an upper end of the spring adjustment tube 300, and the overall outer circumferential surface may be provided as a flat surface in which convex portions and concave portions are alternately formed.

At this time, the curvature of the convex portion may be greater than the curvature of the concave portion, and the circumference of the convex portion may be shorter than that of the concave portion.

More specifically, the head portion 340 includes a first concave portion 340-1, a second concave portion 340-2, a third concave portion 340-3, a fourth concave portion 340-4, The fifth concave part 340-5, the sixth concave part 340-6, the first convex part 340-7, the second convex part 340-8, the third convex part 340-9, A fourth convex portion 340-10, a fifth convex portion 340-11, and a sixth convex portion 340-12 may be included.

Here, the concave portions of the head portion 340 include a first concave portion 340-1, a second concave portion 340-2, a third concave portion 340-3, a fourth concave portion 340-4, and a second concave portion 340-4. 5 concave parts 340-5 and 6 concave parts 340-6, and the convex parts include the first convex part 340-7, the second convex part 340-8, and the third convex part 340-9. ), the fourth convex portion 340-10, the fifth convex portion 340-11, and the sixth convex portion 340-12.

On the other hand, the concave portion is a portion formed by being rounded toward the center of the head portion 340 , and the convex portion is a portion formed by being rounded in a direction away from the center of the head portion 340 .

When looking clockwise from the center of the head portion 340, the first concave portion 340-1, the first convex portion 340-7, the second concave portion 340-2, and the second convex portion (340-8), third concave portion 340-3, third convex portion 340-9, fourth concave portion 340-4, fourth convex portion 340-10, fifth concave portion (340-5), fifth convex portion 340-11, sixth concave portion 340-6, sixth convex portion 340-12, and first concave portion 340-1 are formed in this order. can know

Meanwhile, the first concave portion 340-1, the second concave portion 340-2, the third concave portion 340-3, the fourth concave portion 340-4, and the fifth concave portion 340-5 ), the sixth concave portion 340-6 may have the same shape as each other, and the first convex portion 340-7, the second convex portion 340-8, the third convex portion 340-9, and the fourth The convex portion 340-10, the fifth convex portion 340-11, and the sixth convex portion 340-12 may have the same shape as each other.

In other words, the edge of the head portion 340 may have a symmetrical (opposite) shape that is folded and overlapped based on an imaginary plane passing through the center point of the head portion 340 .

The first concave portion 340 - 1 and the fourth concave portion 340 - 4 may face each other while being spaced apart from each other at the maximum based on the central point of the head portion 340 .

In addition, the second concave portion 340 - 2 and the fifth concave portion 340 - 5 may be opposed to each other with a maximum distance from each other based on the central point of the head portion 340 .

In addition, the third concave portion 340 - 3 and the sixth concave portion 340 - 6 may be opposed to each other while being spaced apart from each other at the maximum based on the central point of the head portion 340 .

Meanwhile, the first convex portion 340 - 7 and the fourth convex portion 340 - 10 may be opposed to each other while being spaced apart from each other at the maximum based on the central point of the head portion 340 .

Meanwhile, the second convex portion 340 - 8 and the fifth convex portion 340 - 11 may be opposed to each other with a maximum distance from each other based on the center point of the head portion 340 .

Meanwhile, the third convex portion 340 - 9 and the sixth convex portion 340 - 12 may be opposed to each other with a maximum distance from each other based on the center point of the head portion 340 .

Thanks to each of these opposing structures, fluid vibration generated when fuel passes can be offset, which has the advantage of providing a more vibration-reducing injector.

5 , the seventh convex portion 330-13, the eighth convex portion 330-14, the ninth convex portion 330-15, and the tenth convex portion 330-16 are of the body portion 330. It is formed on the lower outer circumferential surface.

5 shows only the seventh convex portion 330-13, the eighth convex portion 330-14, the ninth convex portion 330-15, and the tenth convex portion 330-16, but the bottom portion ( 311) is provided at a point symmetrical to the eighth convex portion 330-14 and at a point symmetrical to the ninth convex portion 330-15 based on the center of the bottom portion 311. You should know that it is happening.

Meanwhile, in another embodiment of the present invention, the above-described convex portion may be formed as a flat portion.

In other words, in another embodiment of the present invention, the seventh convex portion 330-13, the eighth convex portion 330-14, the ninth convex portion 330-15, the tenth convex portion 330-16, The first convex part 340-7, the second convex part 340-8, the third convex part 340-9, the fourth convex part 340-10, the fifth convex part 340-11, The sixth convex portion 340-12 may be provided flat.

As described above, since the plurality of flow passage parts can be provided to have upper and lower narrow shapes alternately, the flow of fuel becomes smooth and the reaction force by the spring 500 is more effectively dispersed, thereby enabling stable spring fixation. present

In other words, the plurality of flow passage parts are provided to have upper and lower narrow shapes alternately, and thus, the spring reaction force is more stable and Since it can be effectively dispersed and absorbed, it has the advantage of improving durability as well as improving injector performance.

As shown in FIG. 5 , since the spring adjustment tube is provided with a pillar part 312 and a stepped part 320 , when the spring 500 is inserted and installed, it can be combined while being aligned.

In other words, the spring 500 is connected to the leg portion 310 as shown in FIG. 6 , and the pillar portion 312 guides the spring 500 as shown in FIG. 5 .

The upper end of the spring 500 is supported by the stepped portion 320 while being extrapolated to the pillar portion 312 .

Therefore, when the spring 500 is installed on the leg portion 310, alignment between the center line in the longitudinal direction of the spring 500 and the center line in the longitudinal direction of the spring adjustment tube is completed, so that buckling occurs when the spring 500 is elastically deformed. Injector performance is maximized by being blocked at the source, and the ease of installation of the spring 500 is increased, so that productivity can be improved.

In addition, as can be seen in FIGS. 5 and 6 , the upper end of the spring 500 is in contact with the stepped portion 320 along the circumference, but may not be in contact with the stepped portion 320 in some sections.

In other words, one side of the spring 500 is inserted in contact with the pillar portion 312, but the end of the spring 500 is not in contact with the contact section (not shown) in contact with the stepped portion 320 and the stepped portion 320. It has a non-contact section (not shown).

At this time, among the ends of the spring 500, a plurality of contact sections and a plurality of non-contact sections alternately exist, and the length of the contact section may be shorter than the length of the non-contact section.

In addition, as shown in FIG. 6, the outer circumferential surface of the spring adjustment tube 300 has an eighth convex portion 330-14 at the boundary in the vertical direction of the pair of flow passages adjacent to each other. can be a shape.

In another embodiment of the present invention, the spring 500 includes a first contact section (not shown) in surface contact with the stepped portion 320 and a second contact section (not shown) in line contact with the end portion of the channel portion. may also be desirable.

The first contact section and the second contact section may be formed alternately with each other, whereby buckling of the spring 500 in the lateral direction due to the elastic repulsive force of the spring 500 can be effectively resolved.

Meanwhile, the spring adjustment tube 300 according to preferred embodiments of the present invention is formed by intaglio-processing the flow path, so that the weight of the spring adjustment tube 300 can be reduced, which eventually helps to improve the fuel efficiency of the entire vehicle. can give

On the other hand, it may be more preferable in the installation of the spring 500 that the pillar portion 312 has a tapered portion ranging from the outer circumferential surface of the bottom portion 311 to a predetermined height.

101: injector housing
102: lead pipe
103: needle shaft
110: electromagnet part
200: magnetic core part
300: spring adjustment tube
310: leg part
311: bottom
312: column part
320: stepped part
330: torso
330-1: first flow path part
330-2: second flow path part
330-3: 3rd flow path part
330-4: 4th flow path part
330-5: 5th flow path part
330-6: 6th flow path part
330-7: 7th flow path part
330-8: 8th flow path part
330-9: 9th flow path part
330-10: 10th flow path part
330-11: 11th flow path part
330-12: 12th flow path part
330-13: seventh convex portion
330-14: 8th convex portion
330-15: ninth convex portion
330-16: tenth convex portion
340: head part
340-1: first concave portion
340-2: second concave portion
340-3: Third concave portion
340-4: 4th concave portion
340-5: 5th concave portion
340-6: 6th concave portion
340-7: first convex portion
340-8: second convex portion
340-9: Third convex portion
340-10: fourth convex portion
340-11: fifth convex portion
340-12: sixth convex portion
400: amateur part
500: spring

Claims (13)

In the injector provided with a spring adjustment tube,
injector housing 101;
a magnetic core part 200 inserted into the injector housing 101;
a spring adjustment tube 300 fixed inside the magnetic core part 200;
an armature unit 400 provided on the lower side of the spring adjustment tube 300 inside the injector housing 101 and fixed to an upper end of the needle shaft 103 for transporting fuel;
The armature part 400 is allowed to rise in a predetermined direction in a direction adjacent to the spring adjustment tube 300 by an electric signal applied to the injector housing 101, and the injector housing 101 When the electrical signal is released, one side is extrapolated to the spring adjustment tube 300 by a predetermined length to push the armature unit 400 in a direction away from the spring adjustment tube 300, and the other side a spring 500 inserted into the armature part 400; including,
Injector with spring adjustment tube.
According to claim 1,
The spring adjustment tube 300,
a leg part 310 to which the spring 500 is extrapolated;
a trunk portion 330 having a larger average diameter than the leg portion 310 and having a flow path on an outer circumferential surface thereof;
a stepped portion 320 forming a boundary between the leg portion 310 and the body portion 330 and supporting an upper end of the spring 500;
a head part 340 forming the top of the spring adjustment tube 300; Characterized in that it includes,
Injector with spring adjustment tube.
According to claim 2,
The spring adjustment tube 300,
Characterized in that the spring 500 includes a leg portion 310 to which it is extrapolated,
Injector with spring adjustment tube.
According to claim 3,
The leg part 310,
a bottom portion 311 having a circular shape and a flat surface constituting the lowermost end of the spring adjustment tube 300;
a column part 312 formed as a round part constituting a height part of the spring adjustment tube 300 and having a bottom part 311 as a cylinder; Characterized in that it includes,
Injector with spring adjustment tube.
According to claim 3,
The stepped portion 320 is characterized in that the flow path portion of the upper beam and the lower beam is formed alternately along the circumference along the circumference,
Injector with spring adjustment tube.
According to claim 4,
The pillar portion 312 is characterized in that it has an upper and lower tapered portion from the outer circumferential surface of the bottom portion 311 to a predetermined height,
Injector with spring adjustment tube.
According to claim 2,
A plurality of flow passages are provided,
Characterized in that the boundary between a pair of flow passages adjacent to each other in the vertical direction of the spring adjustment tube 300 is generally “N” shaped,
Injector with spring adjustment tube.
According to claim 2,
Characterized in that the edges of the head portion 340 are symmetrical to each other based on a plane passing through the center point of the head portion 340,
Injector with spring adjustment tube.
According to claim 8,
The edge of the head portion 340 is characterized in that the convex portion and the concave portion are formed alternately with each other,
Injector with spring adjustment tube.
According to claim 9,
Characterized in that the rim length of the convex portion is shorter than the rim length of the concave portion,
Injector with spring adjustment tube.
According to claim 1,
Characterized in that the spring adjustment tube 300 is C 5210R-H,
Injector with spring adjustment tube.
According to claim 2,
Characterized in that a filter for filtering foreign substances contained in the fuel is installed in the flow path portion.
Injector with spring adjustment tube.
injector housing 101;
a magnetic core part 200 inserted into the injector housing 101;
a spring adjustment tube 300 fixed inside the magnetic core part 200;
an armature unit 400 fixed to an upper end of a needle shaft 103 provided below the spring adjustment tube 300 inside the injector housing 101 and transporting fuel;
The electric signal applied to the injector housing 101 allows the armature part 400 to rise in a predetermined direction in a direction adjacent to the spring adjustment tube 300, and the injector housing 101 When the electrical signal is released, one side is extrapolated to the spring adjustment tube 300 by a predetermined length to push the armature unit 400 in a direction away from the spring adjustment tube 300, and the other side a spring 500 inserted into the armature part 400; In the injector provided with a spring adjustment tube comprising a,
The spring adjustment tube 300 is manufactured through a deep drawing method,
How to make a spring adjustment tube.

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