KR101694204B1 - Gas vent of core insert type - Google Patents

Abstract

The present invention relates to a customized gas vent (90) which comprises: a tubular housing (100) which is vertically opened; an upper shaft (200) covering an upper part of the housing (100); and a lower shaft (300) coupled to the upper shaft (200). According to the present invention, the customized gas vent ensures quick production and easy processes, thereby reducing production costs.

Description

A gas vent of a core insert type

The present invention relates to a customized gas vant, and more particularly to a customized gas vant that is constructed such that a bolt is fastened to a housing and gas is exhausted between the housing and the bolt.

Hereinafter, the structure and operation of the laminated gas vant 1 according to the background art will be described with reference to the accompanying drawings.

Fig. 1 is a perspective view showing a stacked gas vent according to the background art, and Fig. 2 is a perspective view showing an example in which a stacked gas vent according to the background technique is mounted on an injection mold.

Generally, after the molten synthetic resin is injected into the injection mold and solidified, the upper mold and the lower mold S constituting the injection mold are separated from each other, so that the product can be molded.

The upper mold and the lower mold S are formed with a molding groove U in which synthetic resin is filled on mutually facing surfaces. However, if molten synthetic resin is injected into the injection mold, gas is generated, and bubbles are formed, so that a dense tissue product can not be produced. Therefore, there is a need to exhaust gas from the injection mold S.

For this purpose, the stacked gas vent 1 shown in Fig. 1 is used.

A plurality of plates 10 are closely adhered to the laminated gas vans 1 and the plate 10 is disposed at a lower portion of the lower plate 11 and at a lower position than the lower plate 11 T) is small. The lower plate 11 and the upper plate 15 are connected to each other with a connection plate 13 having a smaller width V and a smaller thickness T than the lower plate 11 and the upper plate 15. An exhaust groove 12 is formed on one side of the lower plate 11 so as to be opened upward and downward.

When the plate 10 is closely contacted, both sides of the bottom plate 11 are in close contact with each other, and a gap G is formed between the top plates 15.

2, when the stacked gas vent 1 is mounted on the lower mold S of the injection mold, the gas contained in the molten synthetic resin can be exhausted through the gap G and the exhaust groove 12 .

According to the background art, there are the following problems.

Firstly, since it is constituted by being divided into a plurality of plates 10, it is difficult to process and it takes a lot of time, resulting in an increase in manufacturing cost. That is, in order to form the bottom plate 11, the top plate 15, and the connecting plate 13 having different dimensions in the plate 10, it is necessary to cut the metal material in a plane. Therefore, the metal material is subjected to a process of milling and polishing with a grinder to adjust the tolerance. However, if a plurality of plates 10 are manufactured through these processes, it is difficult to perform a rapid operation, resulting in a problem of deteriorating productivity.

Secondly, if the insert hole H formed for inserting the stacked gas vent 1 into the lower mold S of the injection mold is circular, it is easy to process. That is, it can be easily formed through drilling. However, in the case of a quadrilateral as in the background art, a long molding process must be performed from the mill to the end mill. That is, since the laminated gas vans 1 have to be formed only in a square shape, the insertion holes H are difficult to be machined.

Thirdly, when the gas is exhausted through the gap G, the tar included in the gas occludes the gap G. FIG. At this time, the plate 10 needs to be pulled out from the injection mold, which lacks a pull-out function, which makes it difficult to separate the plate 10 from the injection mold. In other words, since it is mounted on the injection mold by interference fit, there is a problem that it is difficult to separate it.

Fourth, since the plurality of plates 10 are separated from each other, the stacked gas vans 1 are liable to be lost during storage.

Korean Patent Registration No. 10-1221408 (Registered on January 07, 2013)

The customized gas vans according to the present invention are intended to solve the following problems.

First, since it is constituted by dividing into a plurality of plates, it is difficult to process and it takes a long time to solve the problem of increase in manufacturing cost.

Secondly, since the stacked gas vant according to the background art has a hexahedral shape, the insertion hole formed in the injection mold has to be formed in a square shape. Accordingly, it is intended to solve the problem that the insertion hole is difficult to be machined.

Thirdly, it is difficult to remove the tar that blocks the gap because it is difficult to draw the stacked gas vent in the state of being inserted into the injection mold.

Fourth, since a plurality of plates are combined with each other, some problems are liable to be lost when stored.

A customized gas vane of the present invention for solving the above problems is constituted as follows.

An upper shaft inserted into the upper portion of the housing to cover the upper portion of the housing, and a lower shaft received in the lower portion of the housing and combined with the upper shaft.

The upper shaft includes a head covering an upper portion of the housing, a body formed at a lower end of the head and fitted over the housing, an insertion hole penetrating the body and the head simultaneously up and down, And an exhaust hole formed in the insertion hole and connected to the insertion hole, wherein the lower shaft is inserted into the insertion hole, and a gap formed between the upper shaft and the lower shaft and the inner surface of the housing, And a spacing space.

The insertion hole includes a female thread formed at a lower portion and a pin hole connected to an upper end of the female thread to form the gap.

The lower shaft includes a head accommodated in a lower portion of the housing, a male screw portion connected to an upper end of the head and fastened to the female screw portion, and a male screw portion connected to an upper end of the male screw portion, Pin.

Wherein the housing comprises: an outer tube which is opened in upper and lower chambers and in which the upper shaft is fitted upward and in which the lower tube is received in a downward direction; And an inner tube penetrating upward.

In addition, a plurality of internal teeth formed on an inner surface of the outer tube and connected to the inner tube and closely adhered to an outer surface of the body, and the spacing space is formed between the inner teeth.

And a key groove formed at a lower end of the body to insert the key, wherein when the key is combined with the key groove, the exhaust hole corresponds to the spaced space .

As another example of the present invention for solving the above problems, the present invention is configured as follows.

A housing having an insertion hole penetrating through the upper and lower chambers and having an exhaust hole connected to the insertion hole laterally; and a lower shaft fitted to the lower portion of the housing to form a gap with the insertion hole,

The housing includes a ring-shaped rim that is disposed at an upper portion of the exhaust hole and protrudes outwardly along an outer periphery of the housing. The lower shaft includes a head which is engaged with a lower portion of the housing and corresponds to a width of the rim. And an exhaust groove formed on the outer surface of the head and penetrating the upper and lower chambers.

The insertion hole includes a pinhole formed at an upper portion thereof and forming the gap, an extension hole connected to a lower portion of the pinhole to expand the width, and a female screw portion formed at a lower portion of the extension hole.

Wherein the lower shaft includes a male screw portion connected to an upper portion of the head and coupled to the female screw portion and a pin connected to an upper end of the male screw portion to form a gap between the pin hole and the exhaust hole, do.

As another example of the customized gas vent of the present invention for solving the above problems, the gas vent may be configured as follows.

Wherein the housing has a cylindrical shape and a planar surface disposed on an outer surface of the housing, the planar surface having an outer surface and an outer surface, So as to pass through the upper and lower rooms and both the rooms.

The upper shaft may include a head disposed at an upper portion of the housing and sized to be engaged with the through hole and an insertion portion extending to a lower portion of the head and fitted in the through hole, Diameter.

The upper shaft has a circular tube shape, and includes an outer tube constituted by the head and an inserting portion, and a bolt penetrating the outer tube at the upper portion and fastened to the housing, wherein the outer tube includes a count sink And a bolt hole connected to a lower portion of the count sink hole and penetrating the insertion portion.

Further, the bolt includes a head accommodated in the count sink hole, and a male screw portion extending downward of the head and extending downward of the bolt hole.

The through-hole includes an upper hole into which the insertion portion is inserted, and a projection which is connected to a lower side of the upper hole and has a width smaller than that of the upper hole and in which the male screw portion is fastened, and protrusions protruding from the lower end of the housing.

And a combining part formed on the outer surface of the insertion part and the inner surface of the upper hole to be combined with each other to prevent rotation of the housing.

The customized gas vans according to the above-mentioned problems have the following effects.

First, since the housing is combined with the upper shaft, it can be manufactured easily and quickly, compared with the case where the housing is divided into a plurality of plates as in the background art, so that the manufacturing cost can be lowered compared with the background art .

Second, since the present invention is manufactured in a cylindrical shape, the holes mounted in the mold are processed into a circular shape. Therefore, as compared with the case of forming a hole with a square like the background art, there is an effect that the hole can be made easily. That is, in the background art, since a square hole H is formed by an end mill or the like, the operation is difficult and difficult. However, the present invention has an effect that a hole can be made easily and quickly by a simple operation of drilling with a drill.

Third, in the state where the present invention is mounted on a metal mold, it is possible to easily remove the tar buried in the mold by separating the upper shaft. Then, the ring shafts can be easily mounted. Therefore, the maintenance is easy.

Fourth, the present invention has the effect of solving the problem that some parts are lost because the number of parts is smaller and the parts can be stored in a combined state as compared with the background art.

1 is a perspective view showing a stacked gas vent according to the background art;
2 is a perspective view showing an example in which a stacked gas vent according to the background art is mounted on an injection mold.
3 is a perspective view showing a first embodiment of a customized gas vant according to the present invention.
4 is an exploded perspective view showing a first embodiment of a customized gas vent according to the present invention.
5 is a cross-sectional view taken along line F-F 'of FIG.
Fig. 6 is a use state diagram showing an example in which the first embodiment of the customized gas vent according to the present invention is mounted on an injection mold. Fig.
7 is a perspective view showing a second embodiment of a customized gas vant according to the present invention.
8 is an exploded perspective view showing a second embodiment of a customized gas vant according to the present invention.
9 is a sectional view showing a second embodiment of a customized gas vant according to the present invention.
Fig. 10 is a use state showing an example in which a second embodiment of the customized gas vent according to the present invention is mounted on an injection mold. Fig.
11 is a perspective view showing a third embodiment of a customized gas vant according to the present invention.
12 is an exploded perspective view showing a third embodiment of a customized gas vant according to the present invention.
FIG. 13 is a perspective view showing a part of a housing formed in a third embodiment of the customized gas vant according to the present invention. FIG.
FIG. 14 is a perspective view of a third embodiment of a customized gas vant according to the present invention, in which a housing is partially cut away in a state where a housing shaft is combined with a housing shaft. FIG.
15 is a perspective view showing an example in which a third embodiment of a customized gas vant according to the present invention is inserted into an insertion hole formed in an injection mold.
16 is a perspective view showing a process in which the housing is inserted into the insertion hole of the injection mold in the state of FIG. 15;
17 is a perspective view showing a state in which the housing is completely received in the insertion hole of the injection mold in the state of FIG. 16;
18 is a cross-sectional view taken along line F-F 'of Fig.
Fig. 19 is a perspective view showing an exhaust route of a gas, in which a lower part of the housing constituted in the third embodiment of the customized gas vent of the present invention is directed upward.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

(Embodiment 1)

4 is an exploded perspective view showing a first embodiment of a customized gas vane according to the present invention, Fig. 5 is a sectional view taken along the line F-F of Fig. 4 Fig. 6 is a state diagram showing an example in which the first embodiment of the customized gas vant according to the present invention is mounted on the injection mold. Fig. 6 is a sectional view of a customized gas vent 90 according to the first embodiment of the present invention ) Is composed as follows.

Shaped housing 100 which is open to the upper and lower sides and an upper shaft 200 which is inserted into the upper portion of the housing 100 to cover the upper portion of the housing 100, And a lower shaft 300 coupled to the upper shaft 200 is formed.

The upper shaft 200 includes a head 210 that covers an upper portion of the housing 100 and a body 220 formed at a lower end of the head 210 and fitted to the upper portion of the housing 100, . An insertion hole 230 is formed through the body 220 and the head 210 so as to vertically penetrate the body 220. An exhaust hole 230 formed at the side of the body 220 and connected to the insertion hole 230 240).

The gap G is formed by fitting the lower shaft 300 into the insertion hole 230 so that the gas can be exhausted. The upper shaft 200 and the lower shaft 300, A spacing space W is formed between the inner side surfaces of the housing 100 to open downward.

Hereinafter, the configuration will be described in detail.

5, the insertion hole 230 of the upper shaft 200 is formed with a female screw portion 233 to which a male screw portion 320 to be described later is fastened and is connected to an upper end of the female screw portion 233, A pinhole 235 into which the pin 330 is inserted is formed.

5, the lower shaft 300 is connected to an upper end of the head 310 to form a male screw part 320 which is fastened to the female screw part 233. The pin 330 is connected to the upper end of the male threaded portion 320 and is fitted into the pinhole 235 of the insertion hole 230 to form the gap G. [ A driver groove (not shown) is formed at the lower end of the head 310 to facilitate rotation. The gap G is preferably 0.05 mm to 0.07 mm, for example.

Further, the exhaust hole 240 corresponds to the pinhole 235, so that the exhaust hole 240 is connected to the gap G. Therefore, the gas introduced into the gap G is configured to escape through the exhaust hole 240 and be exhausted downward through a spacing space W described later.

4, a key groove 225 is formed at the lower end of the body 220 to insert a key 140, which will be described later.

4 and 5, the housing 100 is opened up and down to constitute an outer tube 110 in which the upper shaft 200 is fitted upward and the lower shaft 300 is received downward. The inner tube 120 is disposed inside the outer tube 110 and receives the head 310 and passes the male thread 320 and the pin 330 upward.

A plurality of inner teeth 130 are formed on the inner surface of the outer tube 110 and connected to the inner tube 120 to closely contact the outer surface of the body 220, The spacing space W is formed between the first and second spacers 130. The internal teeth 130 are formed in a bar shape and are elongated in the upper and lower chambers.

4 and 5, the inner tube 120 includes a body 121 in the form of a container which is opened downward and closed by an upper plate 123. An upper plate 123 of the body 121 And a through hole 125 formed in the through hole 125 is formed. The through-hole 125 is sized to catch the head 310 of the lower tube 300. Therefore, the lower shaft 300 and the upper shaft 200 can be combined with the housing 100 because the lower shaft 300 is fastened to the upper shaft 200.

Also, a key 140 protruding from the inner surface of the inner teeth 130 is formed. The key 140 is inserted into the key groove 225 formed at the lower end of the body 220. When the key 140 is combined with the key groove 225, To correspond to the spacing space (W). Accordingly, the exhaust hole 240 and the space W can be easily aligned.

In addition, the housing 100, the upper shaft 200 and the lower shaft 300 are formed in a circular shape in cross section, so that it is preferable that the housing 100 is easily manufactured. The diameters of the head 210 and the outer tube 110 are the same. At this time, the head 210 may or may not be in close contact with the upper end of the outer tube 110.

An example of the use of the customized gas vent 90 according to the above configuration will be described below.

As shown in FIG. 6, a hole H is punched through the injection mold M to insert the customized gas vent 90. In this state, the synthetic resin melt is filled in the injection mold M in a state where the upper mold and the lower mold of the injection mold M are combined. Then, the gas generated from the synthetic resin melt flows into the gap G formed between the pin 330 and the pinhole 235. Exit from the exhaust hole 240 formed in the body 220 and exhausted downward through the separated space W. [

When the gap G is closed by the tar, when the driver G is inserted into the driver groove formed in the lower shaft 300 and is rotated in the unlocking direction, the lower shaft 300 and the upper shaft 200 can be easily . After the lower shaft 300 and the upper shaft 200 are separated from each other, the lower shaft is inserted into the lower portion of the housing 100 after the upper shaft 200 is inserted into the upper portion of the housing 100, Maintenance is completed.

(Second Embodiment)

Fig. 7 is a perspective view showing a second embodiment of the customized gas vant according to the present invention, Fig. 8 is an exploded perspective view showing a second embodiment of the customized gas vant according to the present invention, Fig. 10 is a state diagram showing an example in which a second embodiment of the customized gas vant according to the present invention is mounted on an injection mold, and Fig. 10 is a sectional view showing the second embodiment of the gas vent according to the second embodiment of the present invention The configuration of the customized gas vent 90 is as follows.

An insertion hole 410 penetrating through the upper and lower chambers is formed and an exhaust hole 420 connected to the insertion hole 410 is formed laterally. A lower shaft 500 is fitted to the lower portion of the housing 400 to form a gap G with the insertion hole 410.

The housing 400 is disposed at an upper portion of the exhaust hole 420 and has a ring-shaped rim 430 protruding outwardly from the outer periphery of the housing 400. The insertion hole 410 is formed in the upper portion to form a pinhole 411 for forming the gap G and an extension hole 413 connected to the lower portion of the pinhole 411 and extending in width, And a female threaded portion 415 formed at a lower portion of the extension hole 413 is formed. The exhaust holes 420 are arranged to correspond to the extension holes 413.

The lower shaft 500 is engaged with a lower portion of the housing 400 and is formed with a head 510 having a width corresponding to the width of the rim 430 and formed on the outer surface of the head 510 And an exhaust groove 513 penetrating through the upper and lower chambers. The lower shaft 500 includes a male thread 520 connected to an upper portion of the head 510 to be coupled to the female thread 415 and connected to an upper end of the male thread 520, The pin 530 inserted into the pinhole 411 to form the gap G is formed. At this time, since the diameter of the fin 530 is smaller than the diameter of the male screw portion 520, a gap S larger than the gap G is formed between the pin 530 and the extension hole 413. Accordingly, the gas introduced into the gap G can be quickly exhausted to the exhaust hole 420 through the gap S. A driver groove (not shown) is formed at the lower end of the head 510 to be easily rotated using a driver.

The exhaust hole 420 corresponds to the extension hole 413 and the housing 400 and the lower shaft 500 are both formed in a circular shape in cross section and the diameter of the edge 430 and the diameter of the head 510 Are formed in the same manner.

The use of the customized gas vents 90 according to the second embodiment will be described as follows.

As shown in FIG. 10, a hole is drilled in the injection mold M to insert the customized gas vent 90. In this state, the synthetic resin melt is filled in the injection mold M in a state where the upper mold and the lower mold of the injection mold M are combined. Then, the gas generated from the synthetic resin melt flows into the gap G formed between the pin 530 and the pinhole 411. The exhaust hole 420 is passed through the gap S between the pin 530 and the expansion hole 413. [ At this time, the rim 430 and the head 510 are in tight contact with the holes H of the mold M. A space V is formed between the rim 430 and the inner surface of the head 510 and the inner surface of the hole H and the space V is formed in the exhaust groove formed in the outer surface of the head 510 513, respectively.

When the gap G is closed by tar, if the driver G is rotated in the unlocking direction by inserting the driver into the driver groove formed in the head 510 of the lower shaft 500, the lower shaft 500 can be easily Can be separated. Then, the housing 400 is cleaned while being mounted on the mold M, and the lower shaft 500 is inserted into the housing 400. Then, the lower shaft 500 is inserted into the housing 400, The maintenance is completed.

(Third Embodiment)

Fig. 11 is a perspective view showing a third embodiment of the customized gas vent according to the present invention, Fig. 12 is an exploded perspective view showing a third embodiment of the customized gas vent according to the present invention, Fig. Fig. 14 is a third embodiment of a customized gas vant according to the present invention, in which a housing is partially cut in a state in which the upper shaft is combined with the housing, Fig. 15 is a perspective view showing an example in which a third embodiment of the customized gas vent according to the present invention is inserted into an injection hole formed in an injection mold. Fig. 16 shows a state in which the housing is inserted into the insertion hole of the injection mold Fig. 17 is a perspective view showing a state in which the housing is completely received in the insertion hole of the injection mold in the state of Fig. 16, Fig. 18 is a sectional view taken along line F-F ' In the present invention The customized gas vents 90 according to the third embodiment of the present invention are configured such that the lower portion of the housing constructed in the third embodiment of the customized gas vent is directed upward, The following is the structure of

As shown in FIG. 11, a tubular housing 600 having a through-hole 610 opened upward and downward is formed, and the upper shaft 700 is inserted into the upper portion of the housing 600 to be combined therewith.

The structure of the housing 600 will be described with reference to FIGS. 12 to 14. FIG.

The housing 600 has a shape in which a plane 603 is disposed on the outer surface 601 in a cylindrical shape so that gas can be exhausted to the outside. The plane 603 is formed to pass from the outer side surface 601 to upper and lower chambers and both side chambers as shown by the arrows Z and Q in FIG. That is, the outer surface 601 of the housing 600 is not formed with a step by the plane 603.

The through hole 610 has an upper hole 611 through which the insertion portion 713 of the upper shaft 700 is inserted and is connected to the lower hole of the upper hole 611, 611 and a tapped hole 613 in which a threaded portion 733 of a bolt 730 described later is fastened. Thus, a step 615 is formed between the upper hole 611 and the tapped hole 613. A plurality of protrusions 620 projecting from the lower end of the housing 600 are formed. 18, when the housing 600 is fitted in the insertion hole H of the mold M and the protrusion 620 is seated in the step V of the insertion hole H, A gap K is formed between the insertion hole 603 and the insertion hole H. [ Accordingly, the gas can be exhausted between the gap K and the protrusion 620. It is preferable that the gap K is, for example, 1 mm to 2 mm.

The structure of the upper shaft 700 will be described with reference to FIGS. 12 and 14. FIG.

And a head 711 disposed on the upper portion of the housing 600 and sized to be caught by the through-hole 610 is formed. An insertion portion 713 extending to the lower portion of the head 711 and fitted in the upper hole 611 of the through hole 610 is formed.

Since the width E of the head 711 is smaller than the maximum diameter D of the housing 600, the customized gas vent 90 according to the present invention is inserted into the insertion hole H of the mold M A gap G is formed between the insertion hole H and the head 711 so that the gas can be exhausted. The gap G is preferably 0.05 mm to 0.07 mm, for example. That is, since the maximum diameter D is a size that closely adheres to the insertion hole H, gas passes between the head 711 and the insertion hole H and passes through the insertion hole H and the plane 603 So that it can be exhausted downward.

The configuration of the upper shaft 700 will be described in more detail.

The upper shaft 700 is in the shape of a circular tube and is constituted by an outer tube 710 composed of the head 711 and an insert 713 fitted in the upper hole 611 of the through hole 610, A bolt 730 is formed which penetrates the outer pipe 710 at an upper portion thereof and is fastened to the tap hole 613 of the through hole 610.

The outer tube 710 includes a count sink hole 715 penetrating through the head 711 and penetrating the count tube hole 715 up and down. The outer tube 710 is connected to the lower portion of the count sink hole 715, A through hole 717 is formed.

The bolt 730 includes a head 711 accommodated in the countsink hole 715 and extends downwardly of the head 711 and extends downwardly of the bolt hole 717 to be connected to the tap hole 613 A male threaded portion 733 is formed. The head 711 is configured so as not to protrude upward while being accommodated in the count sink hole 715, and a driver groove 735 is formed at an upper end thereof so as to be rotatable by a driver.

When the outer tube 710 is simultaneously rotated when the bolt 730 is rotated in the forward and reverse directions to be engaged with or disengaged from the tapped hole 613, the outer tube 710 and the inner surface of the upper hole 611 612, so that a large rotational force is required to rotate the bolt 730. Therefore, it is necessary that the outer tube 710 does not rotate when the bolt 730 is rotated. For this purpose, a combination part 800 is formed on the outer surface 714 of the insertion part 713 and the inner surface 612 of the upper hole 611, .

The height of the insertion portion 730 is defined such that the head 711 is separated from the upper end of the housing 600 while the upper shaft 700 is inserted into the through hole 610 of the housing 600. The gas introduced into the gap G between the head 711 and the insertion hole H is easily discharged to the gap K between the plane 603 of the housing 600 and the insertion hole H .

As shown in FIG. 14, the inserting portion 713 has a round tube shape and a flattened portion 820 is formed on the outer side surface 714 of the combining portion 800 as an example. The contact portion 820 is a plane passing through the both sides and downward, and a step 823 is formed at an upper end thereof. A projection 810 is formed on an inner surface 612 of the upper hole 611 formed in the housing 600 and has a flat surface 815 in contact with the tightly coupled portion 820. Therefore, when the insertion portion 713 is inserted into the upper hole 611, the contact portion 820 is brought into contact with the protrusion 810 to prevent the outer tube 710 from rotating.

Hereinafter, an operation example of the present invention according to the third embodiment will be described.

14, in the state where the housing 600 of the customized gas vent 90 and the upper shaft 700 are combined, the customized gas vent 90 is inserted into the insertion hole H of the mold M as shown in FIG. 15 . At this time, the protrusion 620 is seated in the step V formed in the lower portion of the insertion hole H, thereby preventing the downward deviation of the present invention.

A gap G is formed between the head 711 and the insertion hole H and a gap K is formed between the plane 603 of the housing 600 and the insertion hole H .

Therefore, when the injection molten material is filled in the mold M, gas is generated and the gas is introduced into the gap G between the head 711 and the insertion hole H as shown in Figs. 18 and 19 The air is exhausted to the gap K between the plane 603 and the insertion hole H through the space between the head 711 and the housing 600. [ And is discharged to the outside through the protrusions 620.

When the gap G is closed by the tar, the screw is inserted into the driver groove 735 formed in the head 731 of the bolt 730 and the bolt 730 is loosened, 710 from the housing 600 easily. Therefore, the tar can be easily removed. The outer tube 710 is inserted into the housing 600 and the bolt 730 is inserted into the outer tube 710 and fastened to the tapped hole 613 of the housing 600 so that the coupling can be easily performed.

The customized gas vent 90 according to each of the above embodiments has the following effects.

First, in the case of the first embodiment, the upper shaft 200 and the lower shaft 300 are inserted and combined in the housing 100, and in the case of the second embodiment, the lower shaft 500 is inserted into the housing 400 Therefore, in the third embodiment, the upper shaft 700 is inserted into the housing 600 and assembled. Therefore, compared with the case where the plate is divided into a plurality of plates as in the background art, the plate can be manufactured easily and quickly, so that the manufacturing cost can be lowered compared to the background art.

Secondly, since the present invention is manufactured in a cylindrical shape, the hole (H) mounted on the mold (M) is processed into a circular shape. Therefore, as compared with the case of forming the hole H with a square like the background art, there is an effect that the hole H can be formed easily. That is, in the background art, since a square hole H is formed by an end mill or the like, the operation is difficult and difficult. However, the present invention has an effect that the hole H can be easily and quickly formed by a simple operation of drilling with a drill.

Third, in the state where the present invention is mounted on the metal mold M, the tar can be easily removed by separating the lower shafts 300 and 500 or the upper shafts 700 alone. Further, the lower shafts 300 and 500 or the upper shafts 700 can be easily mounted. Therefore, the maintenance is easy.

Fourth, the present invention has the effect of solving the problem that some parts are lost because the number of parts is smaller and the parts can be stored in a combined state as compared with the background art.

The embodiments and the accompanying drawings described in the present specification are merely illustrative of some of the technical ideas included in the present invention. Therefore, it is to be understood that the embodiments disclosed herein are not for purposes of limiting the technical idea of the present invention, but are intended to be illustrative, and therefore, the scope of the technical idea of the present invention is not limited by these embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

90: Custom gas vent 100: Housing
110: outer tube 120: inner tube
121: Body 123: Top plate
125: through hole 130:
140: key 200:
210: Head 220: Body
225: key groove 230: insertion hole
233: Female thread portion 235: Pinhole
240: exhaust hole 300: lower shaft
310: head 320:
330: Pin G: Clearance
W: spacing space 410: housing
410: insertion hole 411: pin hole
413: Expansion hole 415: Female thread part
420: exhaust hole 430: rim
500: Lower shaft 510: Head
513: exhaust groove 520: male thread portion
530: pin 600: housing
603: plane 610: through hole
611: Upper hole 612: Inside surface
613: Tap hole 615:
620: projection 700: upper shaft
710: outer tube 711: head
713: inserting portion 713: count sink hole
717: Bolt hole 730: Bolt
731: head 733: male thread portion
735: Driver Home

Claims (4)

delete delete A tubular housing 600 having through-holes 610 opened to upper and lower chambers,
And an upper shaft (700) inserted and combined above the housing (600)
The housing 600 has a cylindrical shape with a flat surface 603 disposed on the outer surface 601,
The plane 603 is formed so as to pass through the upper and lower chambers and the both chambers from the outer side surface 601,
The upper shaft (700)
A head 711 disposed at the upper portion of the housing 600 and sized to be caught by the through-hole 610,
And an insertion portion (713) extending to a lower portion of the head (711) and fitted in the through hole (610)
The width E of the head 711 is smaller than the maximum diameter D of the housing 600,
The upper shaft 700 has a circular tube shape and includes an outer tube 710 including the head 711 and an insertion portion 713,
And a bolt (730) penetrating the outer tube (710) from the upper portion and fastened to the housing (600)
The outer tube (710)
A count sink hole 715 passing through the head 711,
And a bolt hole (717) connected to a lower portion of the count sink hole (715) and penetrating the insertion portion (713)
The bolt 730 includes a head 711 accommodated in the count sink hole 715,
And a male screw portion (733) extending downwardly of the head (711) and extending downwardly of the bolt hole (717)
The through-hole (610)
An upper hole 611 into which the insertion portion 713 is inserted,
And a tap hole (613) connected to a lower side of the upper hole (611) and having a width smaller than that of the upper hole (611) and fastened with the male threaded portion (733)
And a protrusion (620) protruding from a lower end of the housing (600). The method of claim 3,
And a combination part 800 formed on the outer side surface 714 of the insertion part 713 and the inner side surface 612 of the upper hole 611 so as to prevent the rotation of the housing 600, Wherein said gas vent is a gas vent.

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