KR20220001713A - Adaptor for an intake manifold - Google Patents

Abstract

The present invention relates to an adapter for an intake manifold, which can be manufactured without fusion of a plurality of shells to each other by using an integral injection molding method. The adapter for an intake manifold according to the present invention includes: a runner part (210) in which a plurality of runners (212) through which external air is introduced extend in a row direction while facing each other; an injector mounting part (220) integrally formed on both left and right sides and a lower side of the runner part (210) based on the longitudinal direction to enable installation of an injector (10); a flange part (230) integrally formed on the upper and lower surfaces of the runner part (210); and a support rib (240) connecting the plurality of runners (212) to each other inside the lower surface of the runner part (210).

Description

Adapter for intake manifold {ADAPTOR FOR AN INTAKE MANIFOLD}

The present invention relates to an adapter for an intake manifold, and more particularly, to an adapter with improved molding and manufacturability of an intake manifold for supplying a combustion mixer to the inside of a cylinder provided in an internal combustion engine.

In general, a vehicle engine is provided with one or more cylinders formed by a cylinder head and a cylinder block, and uses kinetic energy generated by combustion of a mixture in which fuel and air in an appropriate ratio are mixed in each cylinder to drive the vehicle.

An intake manifold is installed on the cylinder head side of the engine for a vehicle, and air is supplied to the cylinder of the engine through the intake manifold. The intake manifold is formed with a plenum (or surge tank) provided on one side and a plurality of runners connected to the plenum in communication.

As the conventional intake manifold is made of a metal material such as aluminum, steel, cast iron, etc., the weight is very heavy and the manufacturing cost is high.

Recently, an intake manifold made of a plastic material has been used for weight reduction and manufacturing cost reduction, and the plastic intake manifold is a unit shell divided into a plurality of housings having divided surfaces to facilitate injection molding. shell) is composed of

The unit shell is configured such that fusion ribs are formed on contact surfaces that face each other in the vertical direction and are in contact with each other, and are coupled by vibration welding while the fusion ribs are in contact with each other.

As such, the plastic intake manifold is configured such that a plurality of housings are coupled with fusion ribs in contact with each other as a unit shell, thereby causing a problem in that the manufacturing cost is increased.

In addition, the unit shell has a very complicated external structure, so it is not easy to mount it to the cylinder head side. When mounted on the head side, the fusion rib of the divided surface interfered with the tooling equipment, which caused a problem that the plastic intake manifold was inconvenient to mount on the cylinder head side.

As the fastening device for fastening the flange of the intake manifold to the cylinder head side could not be straightened, the fastening work of the worker was cumbersome and the work time was long. The disadvantages that occurred were induced.

In order to solve this problem, the present applicant has, through Republic of Korea Patent Registration No. 10-1191287 (Title of the Invention: Intake manifold with detachable adapter), to have an adapter formed by separating a part of the intake manifold. , has simplified the installation process of the intake manifold. By using the adapter, the intake manifold can be mounted very easily compared to the related art through the process of mounting and mounting the plenum of the intake manifold on the upper side of the adapter after the adapter is first mounted on the cylinder head.

The shape of the adapter may be variously configured according to the shape and position of the intake manifold and the specifications and shape of the cylinder head. In particular, although the plurality of intake ports provided in the cylinder head are distributed over a relatively large area, the intake manifold is designed to have as narrow an area as possible in order to minimize space occupation in the engine room.

Accordingly, the plurality of runners provided in the adapter has a shape that is gathered toward each other toward the upper side, and is thus formed to have various curved shapes. In particular, in the case of a V-shaped engine arranged in a V shape compared to a so-called inline engine in which a plurality of cylinders are arranged in a line, the curve of the runner becomes complicated.

For this reason, there is a problem in that the manufacturing process of the adapter is complicated, and thus the manufacturing cost is also increased. According to the recent trend of weight reduction, the adapter is also manufactured through injection molding using a synthetic resin. In the case of an adapter having a complicated structure as described above, it is impossible to injection-molten the adapter at once. As a result, the adapter must be divided and molded into a plurality of parts and then joined. This complicated manufacturing process causes an increase in the manufacturing cost of the adapter, and countermeasures are needed.

Republic of Korea Patent No. 10-1191287

The present invention has been devised to solve the problems of the prior art as described above, and it is a technical task to provide an adapter for an intake manifold capable of reducing manufacturing cost by manufacturing the adapter by one molding.

In the adapter for an intake manifold according to an embodiment of the present invention for achieving the above technical problem, a plurality of runners 212 through which external air is introduced face each other and extend in the row direction (raw direction) ( 210); an injector mounting part 220 integrally formed on both left and right side surfaces and a lower side based on the longitudinal direction of the runner part 210 to enable installation of the injector 10; a flange portion 230 integrally formed on an upper surface and a lower surface of the runner portion 210; and a support rib 240 connecting the plurality of runners 212 to each other inside the lower surface of the runner unit 210 .

The runner unit 210 includes a plurality of runners 212 arranged in two rows when viewed from above, and further includes a runner connection unit 211 formed to integrally connect the runners 212 to each other.

Both ends of the runner connection part 211 are connected to a central position of the runner 212 .

The injector mounting unit 220 includes a first mounting unit 224 positioned at the outer center of the plurality of runners 212 and having an injector insertion hole 224b facing the upper surface; The second mounting portion 222 is positioned at the center of the runner connection portion 211, respectively, and the position fixing hole 222a for fixing the position of the injector is formed.

The injector mounting part 220 is located at a position where the first mounting part 224 protrudes outward from both left and right side surfaces than the second mounting part 222 when viewed from above, and the first mounting part 224 is the first mounting part 224 Two mounting parts 221 are located in the middle (L/2) of the separation distance (L) spaced apart from each other.

The runner connection part 211 is characterized in that a spaced gap (G) is formed between the injector and the facing each other.

The first mounting portion 224 includes a first round portion 224R1 protruding roundly to the outside of the injector insertion hole 224b; It includes second and third round portions 224R2 and 224R3 formed on the left and right sides of the first round portion 224R1, respectively.

The second and third round parts (224R2, 224R3) are formed with a first thinning groove (224a1) on the inside.

The flange portion 230 includes a first flange 232 in which a first insertion groove 232a is formed outside the upper edge of the plurality of runners 212; It includes a second flange 234 integrally formed on the lower surface of the runner unit 210 and having a second insertion groove 232b formed outside the lower surface edge of the plurality of runners 212 .

The support rib 240 includes an injection hole 241 through which resin is injected for injection, and a plate-shaped first support rib 242 connecting the runners 212 facing each other in the front and rear directions in the first direction; a second support rib 244 in the form of a plate connecting the runner 212 in a second direction different from the first support rib 242; A third support rib 246 having both ends connected to the inner surface integrally formed in the runner connection part 211 and intersecting the second support rib 244 in a third direction different from the second support rib 244 include

According to the aspects of the present invention having the above configuration, the entire adapter can be integrally injection molded at once, thereby providing the effect of simplifying the manufacturing process, reducing the defect rate, and reducing the manufacturing cost.

1 is a perspective view showing an intake manifold to which an adapter according to an embodiment of the present invention is applied;
Figure 2 is a perspective view showing an adapter according to an embodiment of the present invention.
Fig. 3 is a longitudinal cross-sectional view of Fig. 2;
Fig. 4 is a transverse cross-sectional view of Fig. 2;
5 to 6 are perspective views showing the detailed configuration of the adapter according to an embodiment of the present invention.
7 is a perspective view showing the lower side of the adapter according to an embodiment of the present invention.
8 is a view showing an injector installed in an adapter according to an embodiment of the present invention.
9 is a view showing a mold for molding an adapter according to an embodiment of the present invention.

Hereinafter, an embodiment of an adapter for an intake manifold will be described with reference to the accompanying drawings.

1 is a perspective view showing an intake manifold to which an embodiment of the present invention is applied, the intake manifold according to this embodiment is a surge tank 100 and an adapter (1) located under the surge tank 100 includes The surge tank 100 has a size corresponding to the shape of the surge tank body 110 and the surge tank body 110 made of a plate-shaped rectangular parallelepiped shape, and a surge tank cover covering the upper part of the surge tank body 110 . (120).

The surge tank 100 has a suction port 112 through which air supplied from a throttle body (not shown) is introduced on one side, and a duct 114 connecting the suction port 112 and the surge tank body 110 is integrally formed. is formed with

In addition, the surge tank 100 is provided with a valve actuator 130 for operating a valve (not shown) for changing the air flow path inside the surge tank according to the operating state of the engine on the other side. The shape, structure, and function of the surge tank are included in this specification to describe the adapter 1 according to the present invention, and the present invention is not limited to the form and function of the surge tank as shown.

The adapter 1 is disposed under the surge tank 100, is fastened to a cylinder head whose lower surface is not shown with reference to FIG. It will provide a flow path to

The surge tank 100 and the adapter 1 are formed as separate parts, so when the surge tank 100 and the adapter 1 are attached to the cylinder head, only the adapter 1 is first fastened to the cylinder head, and then the surge tank cover 120 is opened to open the adapter. The surge tank body 110 is coupled to the upper surface of (1).

Then, the surge tank cover 120 is closed to complete the assembly of the intake manifold. By applying this fastening method, the accessibility to the fastening point is improved compared to the case in which the surge tank 100 and the adapter 1 are integrally formed in the prior art, and as a result, it is possible to very easily assemble the intake manifold.

An adapter according to the present embodiment will be described in more detail with reference to the drawings.

2 to 6 , in the adapter 1 for an intake manifold according to an embodiment of the present invention, a plurality of runners 212 through which external air is introduced face each other in a row direction (raw direction). The extended runner part 210 and the injector mounting part 220 (refer to FIG. 6) integrally formed on the left and right sides and the lower side based on the row direction of the runner part 210 to enable the installation of the injector 10; , a flange part 230 (refer to FIG. 3) integrally formed on the upper and lower surfaces of the runner part 210 and a support rib connecting the plurality of runners 212 to each other inside the lower surface of the runner part 210 ( 240) (see FIG. 7).

The runner unit 210 includes a total of N runners 212 in which a plurality of runners 212 are arranged in two rows when viewed from above. Here, the number and arrangement of the runners may vary depending on the type of engine. For example, when the adapter is applied to a 4-cylinder in-line engine, four runners may be arranged in a row, and when the adapter is applied to a V-type 8-cylinder engine, the runners may be arranged in two rows with 4 for each row.

For reference, the adapter according to this embodiment is applied to a V-type N-cylinder engine.

As for the adapter 1, when viewed from above, the injectors 10 are installed on the left and right outside in the row direction, respectively.

The flange portion 230 is integrally formed with the first flange 232 in which the first insertion groove 232a is formed outside the upper edge of the plurality of runners 212, and the lower surface of the runner portion 210, A second flange 234 in which a second insertion groove 232b is formed outside the lower edge of the plurality of runners 212 is included.

The plurality of runners 212 have a pipe shape having an elliptical cross-section, and when the runner part 210 is viewed from the front, has a rounded arc-shaped curvature from the lower side toward the upper side, and extends independently from each other. The runner part 210 is provided with a runner connection part 211 to integrally connect between the plurality of runners 212 to each other, so that the state in which the plurality of runners 212 are connected to each other is stably maintained.

The plurality of runners 212 are connected to each other via a runner connection part 211 , and both ends of the runner connection part 211 are connected to an outer center extending in the longitudinal direction of the runner 212 . For reference, in this embodiment, when the runner 211 is viewed from above, it is formed in an elliptical shape, and the longitudinal direction means a direction (row direction) extending long.

The runner connection part 211 is formed in a plate shape to connect the plurality of runners 212 and connect the plurality of runners 212 to each other to prevent deformation after injection molding.

Since the runner 212 extends relatively longer than the length extended in the width direction in the row direction when the runner part 210 is viewed from above, the runner connection part 211 is as shown in the figure. When they are integrally formed together, the occurrence of dimensional defects due to torsion can be prevented in advance.

Since the runner 212 according to the present embodiment extends with a rounded arc-shaped curvature, the separation phenomenon due to the movement of the fluid is minimized. The adapter can be manufactured by one injection molding without assembling a plurality of unit shells with each other as in the prior art, so that the dimensional accuracy is accurate, the manufacturing cost is reduced, and the fluid due to the reduction of the peeling phenomenon Movement safety is improved.

5 to 7, when viewed from the outside, the plurality of runners 212 are spaced apart from each other to the outside of the runner 212 to form a protruding rib 212a, and the protruding rib ( Since the runner 212a extends with the same curvature as the outer curvature of the runner 212, the thickness is maintained constant regardless of the location.

The protruding ribs 212a are respectively located on the left and right sides in the row direction outer surface when the runner 212 is viewed from the outside, and are not molded into a layout that is in direct contact with the injector 10, so the convenience according to installation is improved do.

The first mounting part 224 and the second mounting part 222 are injection molded by different molds, respectively. The first mounting portion 224 is positioned to protrude outward than the second mounting portion 222 . The molding of the first mounting part 224 will be described in more detail with reference to the drawings after all the configuration descriptions are given.

The first mounting part 224 is located in the middle (L/2) of the separation distance L at which the second mounting parts 222 are spaced apart from each other. The reason that the first mounting part 224 is located at this position is to prevent deformation due to a temperature difference while injecting a high-temperature injection product when the adapter 1 is manufactured by one injection molding operation.

The first mounting part 224 is injection-molded on the outer lower part of the runner 212, the flesh thickness inevitably increases, and the temperature of the injection product itself is injected at a high temperature to prevent deformation from occurring. molded into the shape In this embodiment, a first round part 224R1 protruding roundly to the outside of the injector insertion hole 224b is formed so that heat is not concentrated on a specific location and spreads as much as possible when the injection product is injected into the first mounting part 224. .

The second and third round parts 224R2 and 224R3 are formed in an arc shape corresponding to a size of 1/4 of a circle on the left and right sides of the first round part 224R1, respectively, so that the first mounting part 224 ) can prevent the concentration of thermal stress at a specific location when injection-molded.

In the first mounting part 224, first slimming grooves 224R2a and 224R3a are formed inside the second and third round parts 224R2 and 224R3, and the first slimming grooves 224R2a, 224R3a are formed at the corresponding positions. Since the groove is formed in the shape shown in the drawing so that the thickness is not unnecessarily increased, a phenomenon in which thermal stress is concentrated is prevented, thereby achieving stable adapter injection. For reference, the first thinning grooves 224R2a and 224R3a are formed to extend along the roundly extended portions of the second and third round parts 224R2 and 224R3.

In this embodiment, the first thinning grooves (224R2a, 224R3a) have a predetermined curvature and a rounded length so that when a high-temperature resin for injection is injected, the thickness is unnecessarily increased so that deformation due to a difference in cooling rate does not occur It has a height and is formed as shown in the drawing.

The second slimming groove (224a3) has a groove recessed inward from the bottom so that the thickness does not increase when the first round part (224R1) is injected in a round shape, so that the thickness is reduced at that location so that the temperature is high will not rise to Thus, when the adapter is injection molded, thermal deformation due to temperature differences is prevented.

The second mounting unit 222 is positioned between the left and right sides of the first mounting unit 224 based on the drawing without being biased toward either side, thereby minimizing the occurrence of deformation due to heat transfer of the injection-molded product injected into the second mounting unit 222 .

5 or 8, the runner connection part 211 is formed with a spaced gap G between the injector 10 and the facing each other. The gap (G) prevents the injector 10 from making direct contact with the runner connection part 211, so that even when vibration of the engine (not shown) occurs, it is installed in a state in which it is not in contact with the runner connection part 211. It is maintained so that vibration and noise generation can be minimized.

The injector 10 is composed of a plurality and can be operated while preventing vibration due to non-contact with the runner connection part 211, thereby stably injecting fuel even when used for a long period of time.

The injector mounting part 220 is formed for mounting with respect to the injector 10, is respectively located at the outer center of the plurality of runners 212, and faces the upper surface, and the injector insertion hole 224b is formed. The first mounting part 224 is formed. and a second mounting part 222 positioned at the center of the runner connection part 211 and having a position fixing hole 222a for fixing the position of the injector 10 .

The second mounting part 222 is formed in the above-described runner connection part 211 and is positioned to face the first mounting part 224 in a diagonal direction as shown in the drawing to insert the fastening member provided in the injector 10 . do.

When the position of the injector 10 is fixed to the position fixing hole 222a through a fastening member, stable installation of the injector 10 is made more easily.

The injector mounting part 220 is located at a position where the first mounting part 224 protrudes outward from both left and right side surfaces than the second mounting part 222 when viewed from above, and the first mounting part 224 is the first mounting part 224 Two mounting parts 221 are located in the middle (L/2) of the separation distance (L) spaced apart from each other.

The second flange 234 is formed as shown in the drawing in order to prevent deformation that may be generated while thermal stress is concentrated on the lower surface of the runner part 210 together with the second thinning groove 224a3 described above.

The runner unit 210 has a surge tank fastening unit 214 formed at a front end and a rear end to be fastened to the surge tank, respectively, so that an operator can easily perform the fastening.

In the support rib 240 according to this embodiment, an injection hole 241 into which a resin is injected for injection is formed, and a plate connecting the runners 212 facing each other in the front-rear direction in the first direction (direction facing each other). A first supporting rib 242 in the form of a plate, a second supporting rib 244 in the form of a plate connecting the runner 212 in a second direction different from the first supporting rib 242, and the runner connecting portion 211 ) and a third support rib 246 having both ends connected to an inner surface integrally formed with the second support rib 244 and intersecting the second support rib 244 in a third direction different from that of the second support rib 244 .

Both ends of the first support rib 242 are respectively connected to each other in the middle of the opposite surfaces facing each other from the inside of the lower surface of the runners 212 arranged in the row while facing each other based on the drawing. The position can promote stable injection molding by supporting and reinforcing stress that may be generated in the first direction (direction facing each other) from the inner position when the runner 212 is injection molded.

In this embodiment, since the injection hole 241 is formed in the first support rib 242, resin can be injected during injection molding, and when it is cured after injection is completed, support is reinforced together with the first support rib 242 described above. This makes injection molding more stable. Since the first supporting rib 242 extends to a length corresponding to 90% of the total extended length of the runner 212, a stable supporting force is maintained.

The second support ribs 244 connect the runners 212 to each other in a second direction different from that of the first support ribs 242 , and are formed at a relatively low height from the first support ribs 242 .

The second support rib 244 extends as shown in the drawing so that the runner 212 does not cause a bottle shape in the second direction, and the height is maintained constant at the position connected to the runner 212, and then at the intermediate position ( (between spaced runners), the height decreases and elongates.

The second support rib 244 extends to a height shown in the drawing so that thermal stress due to an increase in thickness is not concentrated on the wall surface of the runner 212 .

The third support rib 246 extends in a third direction different from the second support rib 244 , and the third direction extends toward the inner surface integrally formed with the runner connection part 211 . That is, both ends of the third support rib 246 are integrally connected to the inside of the runner connection part 211 , respectively, and are cross-molded with the second support rib 244 in a cross shape to stably support the stress applied in the third direction. can be reinforced

Since the third support rib 246 protrudes at a height lower than that of the second support rib 244 , thermal deformation is reduced, and as shown in the figure, it is possible to minimize deformation even after being molded.

As described above, when the first to third support ribs 242 , 244 , and 246 are formed to be connected to each other in different directions, the bonding strength of the runner 212 can be increased.

9, the runner part 210 according to this embodiment has an upper and lower core mold M1 positioned on the upper and lower surfaces, respectively, for molding, and the left and right sides of the runner part 210 toward the upper side. The left and right slide core molds M2 each moved at a first angle, and the left and right slide core molds M2 on the left and right sides of the manifold body 210 for molding for the injector mounting part 220, different movement paths from the left and right slide core molds M2 A slide core injector mold M3 having ) for molding for the runner 212 to be formed on It is integrally molded by the rotary core mold M5 extending from the lower side toward the upper side having a rounded arc-shaped curvature.

The upper and lower core molds M1 are operated only in the vertical directions (a, b directions), and the left and right slide core molds M2 have an angle of 15 degrees left and right and are operated only in the left and right upper directions (c, d directions), The core injector mold M3 is provided for installation with respect to the injector and is moved in a two-stage operation manner differently from the moving direction of the left and right slide core molds M2.

That is, since the core injector mold (M3) is moved one time toward the vertical upper part based on the drawing, and then is moved at an angle of 90 degrees from the left and right sides of the molded adapter toward the left and right directions (e, f directions), respectively, the left and right slide core molds (M2) ) and molding is possible without direct contact.

The slide core seal groove mold M4 is operated in the arrow directions (g and h directions) shown in the drawing on the lower surface of the adapter to form a groove for sealing, and the rotary core mold M5 is the runner 212 It is operated only in the direction (I, j direction) shown by the dotted line in the drawing to be movable along the round gin extension path.

As described above, in this embodiment, blow-out molding is possible even when a plurality of molds for molding the adapter operate in different directions, so an adapter having a complex shape can be manufactured at once without fusing a plurality of shells as in the prior art. can be molded.

In addition, since the rotary core mold M5 is movable along the extended path of the runner 212, it can be manufactured by one-time molding, thereby improving the workability of the operator and reducing the cost at the same time.

The rotary core mold M5 is a mold for molding the inner space of the runner 212 and can be operated without separate interference, thereby simplifying the production process.

210: runner
211: runner connection part
212 : Runner
220: injector mounting part
222: second mounting part
224: first mounting part
224R1: First Round Part
224R2, 224R3: 2nd and 3rd rounds
224a1: first slimming groove
230: flange part
232: first flange
234: second flange
240: support rib
242, 244, 246: first, second, and third support ribs

Claims (10)

a plurality of runners 212 through which external air is introduced, facing each other and extending in a row direction (raw direction);
an injector mounting part 220 integrally formed on both left and right sides and a lower side based on the longitudinal direction of the runner part 210 to enable the installation of the injector 10;
a flange portion 230 integrally formed on an upper surface and a lower surface of the runner portion 210; and
An adapter for an intake manifold including a support rib (240) connecting the plurality of runners (212) to each other inside the lower surface of the runner part (210). According to claim 1,
The runner part 210 is an intake manifold including a plurality of runners 212 arranged in two rows when viewed from above, and further comprising a runner connection part 211 formed to integrally connect the runners 212 to each other. for adapters. According to claim 1,
The adapter for the intake manifold, characterized in that both ends of the runner connection part (211) are connected to the central position of the runner (212). 3. The method of claim 2,
The injector mounting unit 220 includes a first mounting unit 224 positioned at the outer center of the plurality of runners 212 and having an injector insertion hole 224b facing the upper surface;
The adapter for intake manifold comprising a second mounting portion 222 positioned at the center of the runner connection portion 211, respectively, and having a position fixing hole 222a for fixing the position of the injector. 3. The method of claim 2,
The injector mounting part 220 is located at a position where the first mounting part 224 protrudes outward from both left and right side surfaces than the second mounting part 222 when viewed from above, and the first mounting part 224 is the first mounting part 224 2 Adapter for intake manifold located in the middle (L/2) of the separation distance (L) where the mounting parts 221 are spaced apart from each other. 3. The method of claim 2,
The adapter for the intake manifold, characterized in that the runner connection part (211) is spaced apart between the injector and the facing each other (G) is formed. 5. The method of claim 4,
The first mounting portion 224 includes a first round portion 224R1 protruding roundly to the outside of the injector insertion hole 224b;
Adapter for intake manifold including second and third round parts (224R2, 224R3) respectively formed on the left and right sides of the first round part (224R1). 8. The method of claim 7,
The second and third round parts (224R2, 224R3) have a first slimming groove (224a1) formed inside the intake manifold adapter. According to claim 1,
The flange portion 230 may include a first flange 232 in which a first insertion groove 232a is formed outside the upper edge of the plurality of runners 212;
Adapter for intake manifold including a second flange 234 integrally formed on the lower surface of the runner part 210 and having a second insertion groove 232b formed outside the lower surface edge of the plurality of runners 212 . . According to claim 1,
The support rib 240 includes an injection hole 241 through which resin is injected for injection, and a plate-shaped first support rib 242 connecting the runners 212 facing each other in the front and rear directions in the first direction;
a second support rib 244 in the form of a plate connecting the runner 212 in a second direction different from the first support rib 242;
A third support rib 246 having both ends connected to the inner surface integrally formed in the runner connection part 211 and intersecting the second support rib 244 in a third direction different from the second support rib 244 Adapter for intake manifold included.

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