KR20170110345A - Check valve - Google Patents

Abstract

A check valve according to the present invention comprises: a base member penetrating a surface of a work and having a through hole; A check member which covers the through hole from the outside of the material so as to allow the outflow of the material inside air through the through hole and to prevent reverse flow; And a locking member movably installed on the base member with the check member interposed therebetween, the locking member selectively pushing the check member, wherein the locking member is formed with an elastic pressing portion for elastically pressing the check member do.

Description

Check valve {CHECK VALVE}

The present invention relates to a check valve which enables air to escape during vacuuming of a workpiece and then maintains a vacuum state.

A flexible, airtight plastic bag is used, which can be folded into a storage container, can take out the objects stored therein, and includes an opening through which the article is inserted into the bag and a valve for discharging the air.

The user places the article in the bag through the opening, then closes the opening, and then discharges air from the bag through the valve. As a result, the discharged storage container, such as a quilt compression bag, is significantly compressed and contained in the compressed article, which is easy to move and requires less storage space.

As such, collapsible and removable storage vessels can remove the air from the storage vessel, allowing for the storage of the stored product and eliminating air to inhibit the growth of harmful organisms and the generation of mold .

As an example, one or more materials (not shown) may be placed into the interior of the container 4 through the zipper 8, i.e., the engageable zipper strip, during use, as shown in Fig. After the article or material to be stored is placed inside the container, the inlet of the container 4 may be sealed by pressing the zipper strip together so that the profiles engage with each other.

This allows the internal volume of the container 4 to be hermetically sealed with the sealed zipper 8 and then discharged through the check valve 6 by sucking the air in the internal volume out of the container 4. That is, the air may exit the container 4 through the check valve 6 using a conventional vacuum generator, such as a domestic or industrial vacuum cleaner. At this time, the check valve 6 and the zipper 8 maintain a vacuum state in the container 4 after the vacuum source is removed.

However, as time elapses, the air leaks through the check valve 6 and the vacuum state in the container 4 is released, whereby the decompression of the articles stored in the container 4 is released, And the occurrence of fungi is a problem.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a check valve capable of maintaining an air-tight shutoff structure in which air does not flow back into a vacuumed material for a long time.

According to an aspect of the present invention, there is provided a check valve comprising: a base member penetrating a surface of a work and having a through hole; A check member which covers the through hole from the outside of the material so as to allow the outflow of the material inside air through the through hole and to prevent reverse flow; And a locking member movably installed on the base member with the check member interposed therebetween, the locking member selectively pushing the check member, wherein the locking member is formed with an elastic pressing portion for elastically pressing the check member do.

Here, the lock member may include a lock plate movably installed on the base member; And a resilient pressing portion which is flexibly connected to the lock plate and has a protruding portion protruding from a surface of the check member. The resilient pressing portion is pushed to the opposite side of the check member when the resilient pressing portion presses the check member, So that the check member can be elastically pressed.

At this time, the protruding portion may protrude obliquely in a direction opposite to the direction of movement toward the through-hole side.

The base plate is formed with a circular protruding fastening portion protruding toward the lock plate, and the lock plate is formed with a circular fitting hole into which the circular protruding fastening portion is inserted to be installed on the base member, And can be rotated in a state of being mounted on the base member.

At this time, the protruding coupling portion may be formed by separating two semicircular bending bars from each other.

In addition, a locking protrusion may be formed at an end of the protruding coupling portion so that the protruding coupling portion is inserted into the fitting hole to block the outer release of the lock plate provided on the base member.

Further, the locking plate is formed with a rim projection line protruding toward the base member side on the inner rim and the outer rim, respectively, so that the rotation of the lock plate in a state where the surface of the lock plate is in contact with the base member is spaced apart , The base member may be provided with protrusion line support portions protruded to support the frame protrusion line formed around the outer edge of the lock plate and installed to be rotated around the circumference.

As another example, thread lines corresponding to each other are formed on the outer circumferential surface of the projecting engagement portion and the inner circumferential surface of the fitting hole, so that the lock plate can be screwed to the base member.

The locking plate may be formed with a locking protrusion protruding toward the base member. The locking plate may protrude from the base member when the locking plate rotates, Two stoppers spaced apart from each other may be formed.

In addition, at least one concave / convex portion may be formed along the side edge of the lock plate.

According to another embodiment of the present invention, the base member is provided with a receiving groove through which the locking plate is inserted, a slide groove is formed on both inner sides of the receiving groove, the slide plate is inserted into the slide groove, And the lock plate can be linearly moved in a state where the lock plate is installed on the base member.

The locking plate may have at least one concave / convex portion on one side of the base opposite to the base member.

In addition, the locking plate may be formed with a rim projection line protruding toward the base member on an outer rim, such that a surface portion facing the base member is spaced apart.

In addition, the base member may be formed with a seating groove on which the check member is seated around the through hole.

In the check valve according to the present invention, since the lock member for locking the check member covering the through hole is formed, the through hole blocking structure of the check member is firmly mechanically locked to prevent the air from flowing back into the vacuumized material It is possible to prevent the problem that the decompression of the article stored in the material is prevented from being released and that the growth of harmful organisms and the occurrence of mold are caused by the introduction of air into the material .

In addition, the check valve of the present invention is configured such that, when the elastic pressing portion urges the check member, the elastic pressing portion is elastically pressed against the check member while being pushed to the opposite side of the check member by the check member, So that the check member can be pressed with an appropriate pressure. If the protruding portion is formed on the lock plate without forming the elastic pressing portion, the protruding portion is caught by the check member, so that the lock plate is not rotated any longer, so that the protruding portion can not press the check member. If the projecting portion is pushed while being pushed onto the check member, the lock plate may be detached from the base member along with the pushing member, which has the advantage of preventing such a problem in advance.

Furthermore, the check valve of the present invention is advantageous in that the elastic pressing portion is free from problems in the functional portion of the lock member elastically pressing the check member even in a certain range of product thickness error at the time of manufacture.

1 is a view showing a container provided with a check valve according to the prior art.
2 is a view showing a check valve installed in a container according to an embodiment of the present invention.
3 is a perspective view of the check valve of FIG. 2;
Fig. 4 is an exploded perspective view showing the check valve of Fig. 3;
Fig. 5 is a perspective view showing the bottom of the check member in the check valve of Fig. 4;
Fig. 6 is a cross-sectional view showing I-I 'of Fig. 4. Fig.
Fig. 7 (a) is a plan view showing that the check member does not elastically press the check member in the check valve of Fig. 3, and Fig. 7 (b) is a cross sectional view showing II-II 'of Fig.
Fig. 8 (a) is a plan view showing that the locking member elastically urges the check member, as opposed to Fig. 7 (a), and Fig. 8 (b) is a sectional view showing III-III 'in Fig.
9 is a perspective view showing a check valve according to another embodiment of the present invention.
10 is an exploded perspective view showing the check valve of Fig.
11 is a perspective view showing the bottom surface of the check member in the check valve of FIG. 10;
12 is a cross-sectional view showing IV-IV 'of FIG.
Fig. 13 (a) is a plan view showing that the check member does not elastically press the check member in the check valve of Fig. 9, and Fig. 13 (b) is a cross sectional view showing V-V 'of Fig.
Fig. 14 (a) is a plan view showing that the lock member elastically urges the check member, as opposed to Fig. 13 (a), and Fig. 14 (b) is a cross sectional view showing Fig.

Hereinafter, exemplary embodiments of the present invention will be described in detail. In the drawings, like reference numerals are used to refer to like elements throughout the drawings, even if they are shown on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 2 is a perspective view of a check valve according to an embodiment of the present invention, FIG. 3 is a perspective view of the check valve of FIG. 2, and FIG. 4 is an exploded perspective view of the check valve of FIG.

Fig. 5 is a perspective view showing the bottom surface of the check member in the check valve of Fig. 4, and Fig. 6 is a sectional view showing I-I 'of Fig.

7 (a) is a plan view showing that the locking member does not elastically press the check member in the check valve of Fig. 3, Fig. 7 (b) is a cross-sectional view showing II- Fig. 8 (a) is a plan view showing that the locking member elastically urges the check member, as opposed to Fig. 7 (a), and Fig. 8 (b) is a sectional view showing III-III 'in Fig.

Referring to the drawings, the check valve (V) of the present invention includes a base member (100), a check member (200), and a lock member (300).

Here, the base member 100 is provided on one surface of the workpiece 10 and has a through hole 100a through which the inside and the outside of the workpiece 10 communicate. For reference, the material 10 refers to a member for vacuum packing the article 11 such as a packaging container, a wrapping paper, etc., and is not limited to this, and may be any member for maintaining the internal sound pressure Of course it is.

The check member 200 has a structure that covers the through hole 100a from the outside of the work 10. The check member 200 allows the inside air of the workpiece 10 to flow out through the through hole 100a, A check valve function for shutting off the air into the work 10, that is, preventing the air from flowing back into the work 10.

The locking member 300 is movably installed in the base member 100 with the check member 200 interposed therebetween and selectively urges the check member 200 so that when the check member 200 is pressed, A pressing elastic pressing portion 320 is formed.

The main structural feature of the present invention relating to the lock member 300 is that the air inside the material 10 is taken out through the through hole 100a by the vacuum apparatus to evacuate the inside of the material 10, The check member 200 blocks the through hole 100a so that air can not be admitted into the material 10 by negative pressure inside the through hole 100a of the check member 200. In addition, The locking member 300 can perform a locking structure that mechanically locks the locking member 300 firmly.

First, the lock member 300 may include a lock plate 310 and an elastic pressing portion 320. The lock plate 300 may be a metal plate.

The lock plate 310 is movably installed on the base member 100. The base member 100 is formed with a circular protrusion 110 protruding toward the lock plate 310, The locking plate 310 may be formed with a circular fitting hole 310a through which the circular protruding coupling part 110 is inserted to be mounted on the base member 100. [

Accordingly, the lock plate 310 rotates while being installed on the base member 100.

At this time, the lock plate 310 may have at least one concave / convex portion 312 formed along a side edge thereof. As another example, although not shown in the drawing, the locking plate 310 may have at least one concave / convex portion 312 formed on one side of the opposite side of the base member 100. By gripping the portion of the concave-convex portion 312 by the user, it is possible to apply an appropriate rotational force for rotation to the lock plate 310 without slipping.

In addition, the protruding coupling portion 110 may have a structure in which two semicircular bending bars 111 are spaced apart from each other.

The two semicircular bending bars 111 are inserted into the circular protruding coupling parts 110 in the process of inserting the protruding coupling parts 110 of the base member 100 into the fitting holes 310a of the lock plate 310, The lock plate 310 is smoothly and smoothly inserted into the base member 100 as the protruding coupling portion 110 of the base member 100 is inserted into the fitting hole 310a of the lock plate 310. [ .

The protruding coupling portion 110 is inserted into the fitting hole 310a so as to prevent the locking plate 310 provided in the base member 100 from being separated from the outside, And a latching protrusion 112 may be formed at an end of the latching member 111.

The locking plate 310 is provided with a base member 100 on an inner rim and an outer rim of the base plate 100 so as to guide rotation of the base plate 100 when the base plate 100 is mounted on the base member 100, The base member 100 is formed such that a rim line 314 formed on the outer rim of the lock plate 310 is installed along the circumference and rotated so as to be guided by the guide protrusions 313, The protrusion line supporting portion 130 may be formed.

As another example, a thread line may be formed on the outer circumferential surface of the protruding coupling portion 110 and the inner circumferential surface of the fitting hole 310a, respectively, although not shown in the drawing, The lock plate 310 can be screwed into the lock plate 310. [

The elastic pressing portion 320 is connected to the lock plate 310 in a flexible manner. Specifically, as shown in the figure, the portion between the fitting hole 310a and the edge of the lock plate 310 is cut into a bar shape, The locking plate 310 may be formed in an empty space formed at a portion between the fitting hole 310a and the rim of the locking plate 310 and extending from the locking plate 310 as being integral with the locking plate 310. [

The elastic pressing portion 320 may be formed with a protruding portion 321 protruding from one side of the check member 200 and may be pushed toward the opposite side of the check member 200 when the check member 200 is pressed, It is possible to adopt a structure in which the check member 200 is elastically pressed.

At this time, the protruding portion 321 is inclined in a direction opposite to the direction of moving to the through hole 100a. As a result, as shown in FIG. 8, the check member 200 is moved gradually toward the through hole 100a The through hole 100a can be firmly and hermetically blocked by the check member 200 by pressing the portion of the check member 200 corresponding to the periphery of the through hole 100a.

7 shows a state in which the most protruding portion of the protruding portion 321 is located at a position away from the through hole 100a and the air inside the material 10 And the check member 200 is detached from the through hole 100a while passing through the through hole 100a.

The elastic pressing portion 320 elastically presses the check member 200 while being pushed by the check member 200 to the opposite side of the check member 200 so that the lock plate 310 is pressed against the base member The check member 200 can be pressed with an appropriate pressure while maintaining a rotatable structure.

If the protruding portion 321 is formed on the lock plate 310 without forming the elastic pressing portion 320 and the protruding portion 321 rotates toward the check member 200 and contacts the check member 200 The locking plate 310 is no longer rotated by being pushed by the check member 200 and caught by the check member 200 so that the protruding portion 321 does not rotate the check member 200 through the through hole 100a, As shown in Fig.

When the protruding portion 321 is rotated toward the check member 200 and pushed onto the check member 200 when the check member 200 contacts the check member 200, It may be removed from the member 100.

Further, the elastic pressing portion 320 does not cause a problem in the functional portion of the lock member 300 that elastically presses the check member 200 against a product thickness error within a certain range during manufacture.

In addition, the locking plate 310 is formed with a locking protrusion 311 protruding toward the base member 100, and the locking plate 310 is engaged with the locking protrusion 311 when the locking plate 310 is rotated The protruded stopper 120 can be formed.

8, the abruptly protruding portion first touches the check member 200 and is caught by the check member 200 so that it is no longer rotated. When the elastic pushing portion 320 is rotated in the opposite direction, And the engaging portion 311 is disposed therebetween so that the gradually protruding portion of the elastic pressing portion 320 protrudes obliquely as the rotation range of the lock plate 310 is restricted by the check member 200 So that the check member 200 can be elastically pressed.

FIG. 9 is a perspective view showing a check valve according to another embodiment of the present invention, FIG. 10 is an exploded perspective view showing the check valve in FIG. 9, FIG. 11 is a perspective view showing a bottom surface of the check member in the check valve of FIG. 12 is a cross-sectional view showing IV-IV 'of FIG.

Fig. 13 (a) is a plan view showing that the check member does not elastically press the check member in the check valve of Fig. 9, Fig. 13 (b) is a cross- Fig. 14 (a) is a plan view showing that the locking member elastically urges the check member, as opposed to Fig. 13 (a), and Fig. 14 (b) is a sectional view showing Fig.

Referring to FIG. 1, the base member 100 is formed with a lead-in groove 100c through which the lock plate 310 is inserted, and a slide groove 100d may be formed on both sides of the lead-in groove 100c.

The lock plate 310 is formed with a slide protrusion 315 that is inserted into the slide groove 100d so that the lock plate 310 linearly moves in a state where the lock plate 310 is installed on the base member 100. [

Accordingly, the check plate 200 can be selectively resiliently pressed while the lock plate 310 is linearly moved.

At this time, the protruding portion 321 of the elastic pressing portion 320 protrudes from the lock plate 310 in a direction opposite to the moving direction of the through hole 100a. As a result, as shown in FIG. 14, The check member 200 is gradually pressed and pressed while moving to the side of the check member 200 so that the through hole 100a is brought into close contact with the portion of the check member 200 corresponding to the perimeter of the through hole 100a, ), But it can be blocked in a confidential way.

13 shows a state in which the most protruding portion of the protruding portion 321 is located at a position away from the through hole 100a and the air inside the material 10 And the check member 200 is detached from the through hole 100a while passing through the through hole 100a.

9 to 14, the reference numerals that are the same as or similar to those in Figs. 1 to 8 have the same functions, and the relative arrangement structure with respect to the other components to be assembled is the same. Since the layout structure has already been described above, a detailed description thereof will be omitted.

As a result, in the check valve V of the present invention, the lock member 300 that locks the check member 200 covering the through hole 100a is formed, so that the through hole 100a of the check member 200 is structured to be rigid It is possible to maintain an airtight blocking structure for a long period of time in which air does not flow back into the vacuumized material 10 due to the mechanical locking so as to prevent decompression of the articles stored in the material 10, In addition, it is possible to prevent a problem that the growth of harmful organisms and the generation of mold are caused by the introduction of air into the material 10.

In addition, the check valve V of the present invention is configured such that when the elastic pressing portion 320 presses the check member 200, the elastic pressing portion 320 is pushed by the check member 200 to the opposite side of the check member 200 So that the check plate 200 can be pressed with an appropriate pressure while the lock plate 310 is kept rotatable with respect to the base member 100. As a result, If the protruding portion is formed on the lock plate 310 without the elastic pressing portion 320 being formed and the protruding portion 321 is caught on the check member 200, the lock plate 310 is no longer rotated, When the protruding portion 321 is unable to press the check member 200 or when the protruding portion 321 is pushed while being overlapped with the check member 200, A problem that may be removed from the base member 100 occurs, which prevents such a problem in advance.

Further, the check valve 200 of the present invention may be constructed so that the elastic pressing portion 320 does not have a problem in the functional portion of the lock member 300 that elastically presses the check member 200 against a product thickness error at the time of manufacture do.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

10: Material 11: Goods
V: Check valve 100: Base member
100a: Through hole 100b:
100c: inlet groove 100d: slide groove
110: projecting fastening portion 111: bending bar
112: latching jaw 120: stopper
130: projection line support part 200: check member
300: Locking member 310: Locking plate
310a: insertion hole 311:
312: concave / convex portions 313, 314, 316: rim projection line
315: slide protrusion 320: elastic pressing part
321:

Claims (14)

A base member penetrating through the one surface of the base material and having through holes;
A check member which covers the through hole from the outside of the material so as to allow the outflow of the material inside air through the through hole and to prevent reverse flow; And
And a locking member movably installed on the base member with the check member interposed therebetween, the locking member selectively urging the check member,
Wherein the lock member is provided with an elastic pressing portion for elastically pressing the check member when the check member is pressed.
The method according to claim 1,
Wherein,
A lock plate movably installed on the base member; And
And a resilient pressing portion flexibly connected to the lock plate and having a protruding portion formed on one surface of the check member side,
Wherein when the elastic pressing portion presses the check member, the elastic pressing portion elastically presses the check member while being pushed to the opposite side of the check member.
3. The method of claim 2,
The projecting portion
And the protrusion protrudes obliquely in a direction opposite to the direction of movement toward the through hole.
3. The method of claim 2,
A circular protruding coupling portion protruding toward the lock plate is formed in the base member, and a circular fitting hole is formed in the lock plate, the circular fitting hole being inserted into the circular protruding coupling portion,
And the lock plate rotates in a state where the lock plate is installed on the base member.
5. The method of claim 4,
Characterized in that the projecting fastening portion comprises two semicircular bending bars spaced apart from each other.
5. The method of claim 4,
Wherein the protruding fastening portion is fitted in the fitting hole to block the outer release of the lock plate provided on the base member, and a stopping protrusion is formed at an end of the protruding fastening portion.
5. The method of claim 4,
Wherein the locking plate is formed with a rim projection line protruding toward the base member at an inner rim and an outer rim, respectively, so as to guide rotation of the locking plate in a state where it is installed on the base member,
Wherein the base member is formed with a protrusion line support portion protruding to support the frame protrusion line formed around the outer edge of the lock plate and installed so as to guide the rotation.
5. The method of claim 4,
Wherein a screw line corresponding to each of the outer peripheral surface of the projecting engagement portion and the inner peripheral surface of the fitting hole is formed and the lock plate is screwed to the base member.
5. The method of claim 4,
Wherein the lock plate is provided with a protrusion protruded toward the base member and protrudes from the base member when the lock plate is rotated to engage the lock plate, And two spaced apart stoppers are formed.
3. The method of claim 2,
Wherein at least one recessed portion is formed along a side edge of the lock plate.
3. The method of claim 2,
Wherein the base member is formed with a lead-in groove into which the lock plate is inserted, a slide groove is formed in both sides of the lead-in groove,
Wherein the lock plate is formed with a slide protrusion that is inserted into the slide groove and slides,
Wherein the lock plate is linearly moved in a state where the lock plate is installed on the base member.
12. The method of claim 11,
Wherein the lock plate is formed with a rim projection line protruding toward the base member at an outer rim of the lock plate so that a surface portion facing the base member is spaced apart.
The method as claimed in claim 4 or 11,
Wherein the lock plate has at least one recessed portion formed on one surface of the opposite side of the base member.
The method according to claim 1,
Wherein the base member is formed with a seating groove in which the check member is seated around the through hole.

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