KR102482812B1 - Piston assembly capable of minimizing negative pressure and cannon salute using pneumatic of piston cannon using the same - Google Patents

Abstract

A piston assembly that minimizes negative pressure is provided. The piston assembly for minimizing the negative pressure is a cylinder, a piston head reciprocating along the longitudinal direction of the cylinder while being inserted into the inner space of the cylinder, a surface pressure formed on the central axis of the piston head and applied to the pressing member A first support plate for supporting, a second support plate disposed spaced apart from the first support plate in the longitudinal direction of the piston head, a first flow hole formed through the first support plate in the thickness direction, and a thickness in the second support plate. It includes a second flow hole penetrating in a direction, a pressing member coupled to surround outer circumferential surfaces of the first and second supporting plates, and a cutout formed in the pressing member.

Description

Piston assembly that minimizes negative pressure and air pressure reduction using the same

The present invention relates to a piston assembly that minimizes negative pressure and an air pressure gun using the same.

In general, when operating a piston for air injection, one hand grips the outer surface of the cylinder and the other hand grips the piston rod while the outer circumferential surface of the pressure member of the piston head is in close contact with the inner circumferential surface from the inside of the cylinder. A process of pressing or pulling is required.

In particular, since air is configured to flow in and out through fine holes formed at one end of the cylinder in the longitudinal direction, when the pulling force of the piston head acts, a negative pressure acts on the inner space of the cylinder, so that a relatively weak woman or When used by children, the situation is that they cannot pull the piston rod to a desired position.

In addition, in the case of injecting air using a piston rod due to the above reasons, there is a problem in that the required time is increased and inconvenience in use is increased.

On the other hand, during celebrations such as birthdays and various anniversaries, champagne and firecrackers are exploded to create a celebratory atmosphere. is built in so that colored tapes, etc. are ejected into the air by the pressure when gunpowder explodes, so that a celebratory atmosphere is created.

However, in the case of such firecrackers, there is a risk of safety accidents because gunpowder is used to obtain a driving force for ejecting color tapes.

In order to solve the above problems, a piston assembly of a new configuration and a pneumatic accumulator using the same have been conceived.

Registered Utility Model Publication No. 20-0216549, 2001.03.15.

The problem to be solved by the present invention is to provide a pneumatic gun that can burst the gun using air pressure without using gunpowder.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

A piston assembly for minimizing negative pressure according to an embodiment of the present invention for solving the above problems is a cylinder, a piston head reciprocating along the longitudinal direction of the cylinder in a state inserted into the inner space of the cylinder, the piston head A first support plate formed on the central axis of and supporting the surface pressure applied to the pressing member, a second support plate disposed spaced apart from the first support plate along the longitudinal direction of the piston head, and a thickness direction on the first support plate A first flow hole formed through, a second flow hole formed through the second support plate in the thickness direction, a pressing member coupled to surround the outer circumferential surfaces of the first and second support plates, and a cutout formed in the pressing member. can include

At least one cutout may be provided, and may be formed in a linear shape based on a projection surface of the pressing surface of the pressing member.

The cutout may be formed in a circular or polygonal shape, and the first flow hole may be displaced from an installation position of the cutout and a mutually projected position.

At least one first cut portion formed by being cut from the outside of the first support plate in the radial direction toward the central axis of the piston rod, and at least one cut portion formed from the outside of the second support plate in the radial direction toward the central axis of the piston rod. The formed second cutting portion may be included.

An inlet formed at an end of the cylinder in the longitudinal direction may further include an inlet through which air pressure generated by the piston head is injected.

According to a second embodiment of the present invention, an air pressure accumulator using a piston assembly that minimizes negative pressure divides a cylinder, a cover for sealing an opening formed on one side of the cylinder in a longitudinal direction, and partitioning the inside of the cylinder, and the cover A mesh supporter forming an accommodating space between and a plurality of decorations filled in the accommodating space, a piston head reciprocating along the longitudinal direction of the cylinder while being inserted into the inner space of the cylinder, coupled to the piston head A pressing member, a cutout formed in the pressing member, an elastic member elastically supported by the piston head in the inner space of the cylinder, an opening hole formed at an opposite end of the cover along the length direction of the cylinder, and the opening hole It may include a driving wire that passes through and is fixed to the piston head.

According to a third embodiment of the present invention, an air pressure accumulator using a piston assembly for minimizing negative pressure divides a cylinder, a cover for sealing an opening formed on one side of the cylinder in a longitudinal direction, and partitioning the inside of the cylinder, and the cover A mesh supporter forming an accommodating space between and a plurality of decorations filled in the accommodating space, a piston head reciprocating along the longitudinal direction of the cylinder while being inserted into the inner space of the cylinder, and a longitudinal direction of the cylinder It may include a support member fixedly installed between the mesh supporter and the piston head, a cutout formed at an end of the piston head on the side of the accommodation space, and a compression tube connected to the support member and the pressing member. .

An air pressure gun using a piston assembly that minimizes negative pressure according to a fourth embodiment of the present invention is inserted into a pressure tank having a pressure chamber therein and a cylinder formed at one side of the pressure tank along the length direction of the cylinder. A piston head reciprocating, a pressure member formed at an end of the piston head to perform compression toward the inside of the cylinder, and in close contact with the inner circumferential surface of the cylinder, a cutout formed in the pressure member, and compression of the pressure member. A one-way valve installed so that air pressure formed by the flow is introduced into the pressure chamber, a mounting groove formed on the other side of the pressure tank, a projectile having an opening that is seated and fixed in the mounting groove and formed from the pressure tank toward the outside, A cover for sealing the opening, a mesh supporter fixedly installed to partition the inside of the projectile, a plurality of decorations filled between the cover and the net support, and an inlet hole formed through one side of the projectile in the mounting groove It may include an opening/closing member communicating with the pressure chamber and selectively opening/closing the inlet hole, and an operating member having one end connected to the opening/closing member and the other end penetrating the pressure tank.

According to a fifth embodiment of the present invention, an air pressure accumulator using a piston assembly for minimizing negative pressure divides a cylinder, a cover for sealing an opening formed on one side of the cylinder in a longitudinal direction, and partitioning the inside of the cylinder, and the cover A mesh supporter forming an accommodating space between the accommodating space, a plurality of decorations filled in the accommodating space, reciprocating along the longitudinal direction of the cylinder while being inserted into the inner space of the cylinder, and a through hole penetrating in the longitudinal direction A piston head having a piston head, a pressure member formed at an end of the accommodation space side of the piston head, a pressure rod having a pressure chamber communicating with the piston head, and a cutout formed to penetrate along the longitudinal direction of the pressure member, The through hole of the piston head may communicate with the cutout.

A first support plate formed on the central axis of the piston head and supporting the surface pressure of the pressing member, a second support plate spaced apart from the first support plate along the longitudinal direction of the piston head, and a thickness direction of the first support plate A first flow hole formed through, a second flow hole formed through the second support plate in the thickness direction, a gripping part formed at an end positioned outside the cylinder along the length direction of the pressing rod, and the gripping part and at least one control hole formed therein, and the pressing member may be formed to surround outer circumferential surfaces of the first and second support plates.

The cutout may be formed in a circular or polygonal shape, and the first flow hole may be displaced from an installation position of the cutout and a mutually projected position.

At least one first cut portion formed by being cut from the outside of the first support plate in the radial direction toward the central axis of the piston rod, and at least one cut portion formed from the outside of the second support plate in the radial direction toward the central axis of the piston rod. The formed second cutting portion may be included.

At least one cutout may be provided, and may be formed in a linear shape based on a projection surface of the pressing surface of the pressing member.

It is formed on the opposite side of the compression tube with respect to the pressure member, and includes a pressure rod communicating with the pressure member, a pressure chamber is provided inside the pressure rod, and a plurality of pressure rods are provided between the pressure rod and the pressure member. A barrier rib having a communication hole may be interposed therebetween, a gripping part may be formed at an end positioned outside the cylinder along a longitudinal direction of the pressing rod, and at least one control hole may be included in the gripping part.

Other specific details of the invention are included in the detailed description and drawings.

The piston assembly for minimizing negative pressure according to an embodiment of the present invention minimizes the negative pressure formed due to the piston head reciprocating in close contact with the inner circumferential surface of the cylinder, so that the force required for operation is minimized.

In addition, when air is injected into a tube for water play requiring inflation pressure through air filling, a buoyancy jacket for safety, an air mattress, or a balloon, the function can be smoothly performed with little force.

On the other hand, the air pressure gun using a piston assembly that minimizes negative pressure according to an embodiment of the present invention can burst the gun using air pressure without using gunpowder, so it does not smell of gunpowder and is harmless to the human body. It is easy to store and transport and has improved fire risk. It is easy to use indoors such as at home, office, and daycare center, and it can be reused because air pressure and colored paper can be recharged.

In addition, as the air pressure inside the cylinder rises by gripping the cylinder with one hand and pressing the piston with the other hand, the decoration is scattered while the cover opens with a sound, thereby providing an aesthetic sense.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

1 is a perspective view showing a piston assembly that minimizes negative pressure according to a first embodiment of the present invention.
2 is a perspective view showing a state in which the piston head and the pressing member of FIG. 1 are separated.
Figure 3 is a longitudinal cross-sectional view showing a part of Figure 1;
4 and 5 show the operation process of FIG.
6 and 7 show various cutout shapes applied to the piston assembly for minimizing negative pressure according to the first embodiment of the present invention and an arrangement structure of first and second flow holes of first and second support plates.
8 to 10 show the operation process of FIG. 7 .
11 schematically shows an air pressure accumulator using a piston assembly that minimizes negative pressure according to a second embodiment of the present invention.
12 schematically shows an air pressure accumulator using a piston assembly that minimizes negative pressure according to a third embodiment of the present invention.
13 schematically shows an air pressure accumulator using a piston assembly that minimizes negative pressure according to a fourth embodiment of the present invention.
14 schematically shows an air pressure accumulator using a piston assembly that minimizes negative pressure according to a fifth embodiment of the present invention.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only these embodiments are intended to complete the disclosure of the present invention, and are common in the art to which the present invention belongs. It is provided to fully inform the person skilled in the art of the scope of the invention, and the invention is only defined by the scope of the claims.

Terminology used herein is for describing the embodiments and is not intended to limit the present invention. In this specification, singular forms also include plural forms unless specifically stated otherwise in a phrase. As used herein, "comprises" and/or "comprising" does not exclude the presence or addition of one or more other elements other than the recited elements. Like reference numerals throughout the specification refer to like elements, and “and/or” includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various components, these components are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first element mentioned below may also be the second element within the technical spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings commonly understood by those skilled in the art to which the present invention belongs. In addition, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless explicitly specifically defined.

The spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe a component's correlation with other components. Spatially relative terms should be understood as including different orientations of elements in use or operation in addition to the orientations shown in the drawings. For example, if you flip a component that is shown in a drawing, a component described as "below" or "beneath" another component will be placed "above" the other component. can Thus, the exemplary term “below” may include directions of both below and above. Components may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 schematically shows a piston assembly for minimizing negative pressure according to a first embodiment of the present invention, FIG. 2 is a perspective view showing a state in which the piston head and the pressing member of FIG. 1 are separated, and FIG. This is a cross-sectional view of a part of it.

1 to 3, the piston assembly for minimizing the negative pressure according to the first embodiment of the present invention includes a cylinder 100, a piston head 110, a first support plate 111, a second support plate 112, It may include a first flow hole 111a, a second flow hole 112a, a pressing member 120, and a cutout 121a.

The cylinder 100 may be formed in a hollow shape having a predetermined length.

The shape of the cylinder 100 may preferably have a circular cross-sectional shape, and the pressing member 120 of the piston head 110 is formed to reciprocate while being in close contact with the inner wall surface of the cylinder 100. can

When the cross-sectional shape of the cylinder 100 is a polygonal shape other than a circular shape, the piston head 110 is formed in a shape corresponding to the cross-sectional shape of the cylinder 100 and can maintain a state in close contact with the inner wall surface of the cylinder 100. If there is, the cross-sectional shape of the cylinder 100 is not limited to any shape other than circular or polygonal.

That is, any shape is possible as long as it has a space in which the pressing member 120 of the piston head 110 can reciprocate along the hollow inner wall surface of the cylinder 100 .

It is formed at one end of the cylinder 100 along the length direction and may further include a flange 140 extending outward from an outer circumferential surface of the cylinder 100 .

The flange 140 may limit the maximum movement distance of the piston head 110 while the piston head 110 moves toward the compression region 100a of the cylinder 100 .

To this end, a gripping part 160 is formed at the opposite end of the piston rod 130 to the pressing member 120 to be described later, and the gripping part 160 is formed in the process of moving the piston rod 130 toward the compression region 100a. ) is in contact with the flange 140 so that the moving distance of the piston rod 130 is limited.

In addition, the opposite end of the flange 140 along the length of the cylinder 100 may further include an inlet 150 through which air pressure formed by the piston head 110 can be injected.

The inlet 150 may be formed in a sharp shape having a smaller diameter than the inner diameter of the cylinder 100, and as described later, air pressure formed in the compression region 100a of the cylinder 100 may be injected.

Due to this, it is possible to perform a function of injecting air into a tube for water play requiring inflation pressure through air filling, a buoyancy jacket for safety, an air mattress, or a balloon.

When liquid is filled in the cylinder 100, the liquid can be discharged through the injection port 150 in a compressed state by the pressure surface 121 of the piston head 110, so the liquid can be injected into industrial hydraulic machines or It goes without saying that a pump function may also be performed.

The piston rod 130 may be formed in a column shape or rod shape of a predetermined length. In particular, the rectangular bars may be crossed to have a predetermined length in the longitudinal direction so as to easily withstand the axial load.

The piston rod 130 reciprocates with a portion inserted into the cylinder 100, and a pressing member 120 is formed at the end of the portion inserted into the cylinder 100 of the piston rod 130. can

The pressure member 120 may be installed and fixed to surround outer circumferential surfaces of the first support plate 111 and the second support plate 112 formed on the piston head 110 .

The first support plate 111 and the second support plate 112 are arranged to be spaced apart by a predetermined distance along the axis of the piston head 110, so that the inner circumferential surface of the pressing member 120 is the outer circumferential surface of the first support plate 111 and the second support plate 112. ) so that they are pressed and fixed to the outer circumferential surface of each.

In addition, the first flow hole 111a formed through the thickness direction may be included in the first support plate 111, and the second flow hole 112a formed through the thickness direction may be included in the second support plate 112. .

The first flow hole 111a and the second flow hole 112a allow the air pressure generated during the reciprocating motion of the piston head 110 to flow smoothly, so that the pressing member 120 of the piston head 110 is a cylinder ( 100) may function to minimize sound pressure formed in the process of moving in a direction away from the compression region 100a. The operating principle related to this will be described later.

The pressing member 120 has a shape extending outward in a radial direction from the central axis of the cylinder 100, and its diameter or area may be formed to be in close contact with the inner wall surface of the cylinder 100.

The pressing member 120 may be formed to correspond to the cross-sectional shape of the cylinder 100 .

That is, when the cross-sectional shape of the cylinder 100 is circular, the shape of the pressing member 120 may be formed in a circular shape so as to be in close contact with the inner wall surface of the cylinder 100, and the cross-sectional shape of the cylinder 100 is circular. In the case of a polygonal shape other than the same, the shape of the pressing member 120 may be formed in a polygonal shape so as to be in close contact with the inner wall surface of the cylinder 100.

Additionally, although not shown, a sealing member may be installed on the outer circumferential surface of the pressing member 120 so as to be in close contact with the inner wall surface of the cylinder 100 to ensure airtightness.

On the other hand, as described above, the holding portion 160 may be formed at the opposite end of the pressing member 120 along the longitudinal direction of the piston rod 130 .

The gripping portion 160 may refer to a portion that extends outward from the central axis so that the user can apply pressure while holding the gripped portion by hand.

The gripping portion 160 contacts the flange 140 while the piston rod 130 moves toward the compression region 100a of the cylinder 100, thereby limiting the maximum moving distance of the piston rod 130.

At least one cutout 121a may be provided, and may be formed in a shape that looks straight when viewing the projection surface of the pressing surface 121 of the pressing member 120 .

The cutout 121a may refer to a valve structure capable of guiding fluid to flow in only one direction. That is, when the piston head 110 moves toward the compression region 100a, it is flatly compressed due to the increased pressure in the compression region 100a, thereby sealing the cutout 121a.

Conversely, when the piston head 110 moves in a direction away from the compression region 100a, the cutout 121a is formed due to pressure introduced through the first flow hole 111a and the second flow hole 112a. it will be open

That is, FIGS. 4 and 5 show the operation process of FIG. 1, and as shown in FIG. 4, when the piston head 110 moves toward the compression region 100a of the cylinder 100, the cutout 121a is not only sealed, but also comes into surface contact with the first support plate 111 in a flat compressed state due to the surface pressure acting on the pressing surface 121 of the pressing member 120, so that the air is compressed and the area of the compression region 100a is compressed. air pressure rises

Conversely, as shown in FIG. 5, when the piston head 110 moves away from the compression area 100a of the cylinder 100, it passes through the first flow hole 111a and the second flow hole 112a. Since the cutout 121a is opened by pressure generated while air pressure flows, negative pressure can be minimized.

6 and 7 show various incision shapes applied to the piston assembly for minimizing negative pressure according to the first embodiment of the present invention and the arrangement structure of the first and second flow holes of the first and second support plates, the incision ( When 121b) is formed in a straight shape, as shown in FIG. 6 , two cutouts 121b may be formed to cross each other.

Meanwhile, as shown in FIG. 7 , the cutout 121c may be formed in a circular or polygonal shape. In this case, the installation position of the cutout 121c may be displaced from the installation position of the first flow hole 111c.

In other words, when projecting the cutout 121c and the first flow hole 111c in the axial direction of the piston head 110, it is preferable to arrange them so that there is no overlapping projected area.

That is, FIGS. 8 to 10 show the operation process of FIG. 7, and as shown in FIG. 9, when the piston head 110 moves to the compression area 100a of the cylinder 100, the pressure member 120 Communication between the compression area 100a of the cylinder 100 and the second support plate 112 due to surface contact between the flattened pressing member 120 and the first support plate 111 because surface pressure is applied to the press surface 121 and compressed status is blocked

Conversely, as shown in FIG. 10 , when the piston head 110 moves in a direction away from the compression area 100a of the cylinder 100, the flow flows through the first flow hole 111c and the second flow hole 112c. By deforming the pressing member 120 into a convex shape by the air pressure being applied, communication between the compression area 100a of the cylinder 100 and the second support plate 112 is made, so that the generation of negative pressure is minimized and operation is possible with little force.

Again, referring to FIG. 7 , the radii of the first cut portion 111c and the second support plate 112 are cut from the outside in the radial direction of the first support plate 111 toward the central axis of the piston rod 130 so that at least one is formed. It may include at least one second cut portion 112c formed by being cut toward the central axis of the piston rod 130 from the outside in the direction.

11 schematically shows an air pressure accumulator using a piston assembly that minimizes negative pressure according to a second embodiment of the present invention.

Referring to FIG. 11, the air pressure gun using a piston assembly that minimizes negative pressure according to the second embodiment of the present invention includes a cylinder 200, a cover 201, a mesh support 202, a decoration M, and a piston head ( 210), a pressing member 220, a cutout 221, an elastic member 222, an opening hole 203, and a driving wire 230.

Here, the cylinder 200, the piston head 210, the pressing member 220, and the cutout 221 have a similar configuration as compared to the configuration according to the first embodiment of the present invention described above, and overlapping descriptions is omitted.

The cover 201 may be coupled to seal an opening on one side of the cylinder 200 in the longitudinal direction.

The cover 201 may be detachably coupled to the outside when air pressure inside the cylinder 200 is generated and a pushing force is applied.

To this end, the cover 201 is formed of an elastic material and may be coupled to the opening of the cylinder 200 in an interference fit manner. In addition, since a method such as a separate support member or adhesion may be applied to be detachable when a specific air pressure is reached, it is not limited thereto.

The mesh support 202 is fixed to the inner circumferential surface of the cylinder 200 and may be installed to enable only air flow along the length direction of the cylinder 200 .

The mesh support 202 means a structure including a mesh, and may mean a network capable of classifying the size of a specific particle.

That is, the commonly used mesh number is 4 to 2500 mesh and can be selectively applied, but since the decoration described in this embodiment has various sizes of colored paper or other various sizes or particles, the decoration of the smallest size among them A mesh structure considering pressure loss value, aperture ratio, allowable size of particles, etc. may be applied within the range in which this does not pass.

As will be described later, the mesh supporter 202 performs a function of supporting the ornament to be maintained in the accommodation space 200b of the cylinder 200 and at the same time, the ornament M does not pass through and only air flows. will perform

The accommodation space 200b may be filled with decorations M such as papers of various colors, memos, and rings.

The elastic member 222 is disposed to be elastically supported by the piston head 210 in the inner space of the cylinder 200 . Here, the elastic member 222 is located on the opposite side of the pressing member 220 and is elastically supported so as to always press toward the compression region 200a of the cylinder 200.

An opening hole 203 may be formed at an opposite end of the cover 201 along the length direction of the cylinder 200 .

Here, the driving wire 230 passes through the opening hole 203, one end of the driving wire 230 is fixed to the second support 212, and the other end of the driving wire 230 is attached to the gripping part 231. can be fixed

Therefore, when the user applies a pulling force while holding the gripping part 231 by hand, the elastic member 222 is compressed, and at the same time, the first flow hole 221a of the first support plate 211 and the second support plate 212 Air pressure is discharged through the second flow hole 212a, and since the incision 221 is opened by the pressure member 220 being deformed toward the compression region 200a, the negative pressure is minimized and operation is possible with little force.

Meanwhile, a force pushing the pressing member 220 toward the compression region 200a is generated due to the elastic restoring force of the elastic member 222 at the moment when the user places the gripping part 231 . At this time, the cutout 221 of the pressing member 220 is compressed and closed by air pressure formed in the compression region 200a.

Thereafter, when the air pressure in the compression area 200a reaches the maximum value, the cover 201 is separated to the outside and at the same time the decoration M filled in the accommodation space 200b is scattered to the outside.

12 schematically shows an air pressure accumulator using a piston assembly that minimizes negative pressure according to a third embodiment of the present invention.

Referring to FIG. 12, the air pressure gun using a piston assembly that minimizes negative pressure according to a third embodiment of the present invention includes a cylinder 300, a cover 301, a mesh support 302, an ornament M, and a support member 303. ), a pressing member 320, an incision 321, and a compression tube 330.

Here, the cylinder 300, the cover 301, the mesh support 302, the piston head 310, the pressing member 320 and the cutout 321 are compared with the configuration according to the second embodiment of the present invention described above. When viewed, the bar has a similar configuration, and duplicate descriptions are omitted.

Again, referring to FIG. 12 , the support member 303 may be fixedly installed between the mesh support 302 and the piston head 310 along the length direction of the cylinder 300 .

Here, a compression tube 330 having both ends connected to the support member 303 and the pressing member 320 and having a compression chamber 330a therein may be included.

At least one through hole 303a passing through the thickness of the support member 303 may be included. The through hole 303a serves to communicate the compression region 300a and the compression chamber 330a.

In addition, a pressure rod 340 formed on the opposite side of the compression tube 330 around the pressure member 320 and communicating with the pressure member 320 may be included. Here, a pressure chamber 340a provided as a space may be included inside the pressure rod 340 .

A barrier rib 312 having a plurality of communication holes 312a may be interposed between the pressure rod 340 and the pressure member 320 .

In addition, a gripping part 341 may be formed at an end of the pressure rod 340 located outside the cylinder 300 in the longitudinal direction, and at least one control hole 341a may be formed in the gripping part 341. there is.

Therefore, when the user presses the pressure rod 340 toward the compression region 330a while pressing the control hole 341a of the gripping portion 341, surface pressure acts on the pressure member 320, thereby causing the pressure member ( The incision 321 of 320 is closed.

Thereafter, air pressure is formed in the compression chamber 330a of the compression tube 330, and when this air pressure reaches the maximum value, the cover 301 is released to the outside and at the same time the decoration M filled in the accommodation space 300b scattered to the outside

Meanwhile, when the user moves the pressure rod 340 in a direction away from the compression area 330a while the control hole 341a of the gripping part 341 is open, the pressure member 320 moves through the control hole 341a and the partition wall. Since the negative pressure is minimized by the air introduced through 312, it is possible to operate with little force.

13 schematically shows an air pressure accumulator using a piston assembly that minimizes negative pressure according to a fourth embodiment of the present invention.

Referring to FIG. 13, an air pressure gun using a piston assembly that minimizes negative pressure according to a fourth embodiment of the present invention includes a pressure tank 401, a piston head 420, a pressing member 421, an incision 421a, It may include a one-way valve 410, a mounting groove 402, a projectile 440, a cover 441, a net support 442, an ornament M, an opening/closing member 403, and an operating member 450. .

Here, the piston head 420, the pressing member 421, the cutout 421a, the cover 441, the net support 442 and the decoration M are compared with the configuration according to the third embodiment of the present invention described above. When viewed, the bar has a similar configuration, and duplicate descriptions are omitted.

The pressure tank 401 may be formed of a material capable of withstanding the maximum air pressure formed by the piston rod 430 and the pressure member 421 within the cylinder 400 . The material of the pressure tank 401 may include a soft tube material or a hard plastic material, but it can be designed in various ways according to the maximum air pressure that can be formed according to the place of use or user.

The cylinder 400 may be disposed on one side of the pressure tank 401, and is formed on the opposite side with respect to the pressing member 421 along the length direction of the cylinder 400, in order to reciprocate the piston head 420. A grippable piston rod 430 may be further included.

A one-way valve 410 may be included so that air pressure in the pressurized area 400a of the cylinder 400 formed by the piston rod 430 may be supplied to the compression area 401a of the pressure tank 401 .

The one-way valve 410 is formed inside the cylinder 400 and communicates with the inside of the pressure tank 401, so that the fluid supplied into the cylinder 400 can flow air only into the pressure tank 401. Structures such as a separate elastic member (not shown) and a ball valve (not shown) provided so as to be applied may be applied.

A mounting groove 402 may be formed on the other side of the pressure tank 401 .

A projectile 440 is seated and fixed in the mounting groove 402 , and the projectile 440 may be disposed to open from the pressure tank 401 toward the outside. For this reason, as will be described later, it is preferable to scatter the decorations M filled in the accommodation space 440b of the projectile 440 toward the outside from the pressure tank 401.

Here, a cover 441 for sealing the opening of the projectile 440 is included, and a net support 442 partitioning the inside of the projectile 440 is formed so that the decoration M is filled on the net support 442. to keep the status quo.

An inlet hole 403 is formed through one side of the projectile 440, communicates with the compression region 401a, and an opening/closing member 451 may be provided to selectively open and close the inlet hole 403.

The opening and closing member 451 may be selectively opened and closed by the operation member 450 .

The operating member 450 may include a driving wire 452 having one end fixed to the opening/closing member 451 and a control member 453 connected to the other end of the driving wire 452 .

The driving wire 452 may include a steel wire or soft plastic, but may include various materials having strength capable of pulling the opening/closing member 451 to open it, so it is not limited thereto.

Therefore, when the user repeatedly reciprocates along the longitudinal direction of the cylinder 400 while holding the piston rod 430 by hand, the air pressure formed in the pressurized area 400a passes through the one-way valve 410. It is supplied to the compression region 401a and accumulated.

In particular, as described above, the cutout 421a of the pressing member 421 is a valve structure capable of guiding fluid to flow in only one direction, so that the piston rod 430 covers the pressing area 400a. When the piston rod 430 moves in a direction away from the pressing area 400a, the cutting portion 421a is sealed by being flatly compressed due to the increased pressure of the pressing area 400a. Since (421a) is opened, generation of negative pressure is minimized and operation is possible with little force.

When the control member 453 is pulled by hand in a state where the air pressure formed in the compression area 401a of the pressure tank 401 reaches a certain value, the opening/closing member 451 is separated and the inlet hole 403 is opened and the compression area is simultaneously opened. The air pressure of (401a) is momentarily supplied to the delivery area (440a) of the projectile (440).

Due to this, the cover 441 of the projectile 440 is separated to the outside and at the same time the plurality of decorations M filled in the receiving area 440b are scattered to the outside.

14 schematically shows an air pressure accumulator using a piston assembly that minimizes negative pressure according to a fifth embodiment of the present invention.

Referring to FIG. 14, the air pressure gun using a piston assembly that minimizes negative pressure according to the fifth embodiment of the present invention includes a cylinder 500, a cover 501, a mesh support 502, a decoration M, and a piston head ( 510), a pressing member 511, a pressing rod 530, and a cutout 512.

Here, the cylinder 500, the cover 501, the net support 502, the decoration M and the pressure rod 530 are of a similar configuration compared to the configuration according to the third embodiment of the present invention described above. , duplicate descriptions are omitted.

As shown in FIG. 14, the pneumatic accumulator using a piston assembly that minimizes negative pressure according to the fifth embodiment of the present invention includes a piston head 510 and a piston head 510 that reciprocate while being in close contact with the inner circumferential surface of the cylinder 500. ) It may include a pressing member 511 mounted on.

A through hole 514 is formed in the piston head 510 along the longitudinal direction. At this time, the through hole 514 communicates with the cutout 512 . That is, the piston head 510 and the cutout 512 of the pressing member 511 are maintained in constant communication.

Also, a gripping portion 531 may be formed at an end of the pressure rod 530 located outside the cylinder 500 along the length direction. In addition, at least one control hole 531a may be formed in the gripping portion 531 .

Therefore, when the user's hand grips the gripper 531 and presses the pressure rod 530 toward the compression region 500a in a state where the control hole 531a is closed with a finger, the pressure rod 530 is compressed. It moves toward the area 500a, and when the air pressure in the compression area 500a reaches a certain value, the cover 501 is released to the outside and at the same time the decoration M filled in the accommodation space 500b scatters to the outside. do.

On the other hand, when the user pulls the pressure rod 530 while holding the gripper 531, the pressure rod 531 is moved in a direction away from the compression area 500a. In this process, the control hole 531a is opened, And, since the air introduced through the control hole 531a passes through the through hole 514 and the cutout 512, the pressure rod 531 can be smoothly operated with a small force because the negative pressure is minimized. there is.

Therefore, the piston assembly for minimizing negative pressure according to an embodiment of the present invention minimizes the negative pressure formed due to the piston head reciprocating in close contact with the inner circumferential surface of the cylinder, so that the force required for operation is minimized. .

In addition, when air is injected into a tube for water play requiring inflation pressure through air filling, a buoyancy jacket for safety, an air mattress, or a balloon, the function can be smoothly performed with little force.

On the other hand, the air pressure gun using a piston assembly that minimizes negative pressure according to an embodiment of the present invention can burst the gun using air pressure without using gunpowder, so it does not smell of gunpowder and is harmless to the human body. It is easy to store and transport and has improved fire risk. It is easy to use indoors such as at home, office, and daycare center, and it can be reused because air pressure and colored paper can be recharged.

In addition, as the air pressure inside the cylinder rises by gripping the cylinder with one hand and pressing the piston with the other hand, the decoration is scattered while the cover opens with a sound, thereby providing an aesthetic sense.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features of the present invention. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

100: cylinder
100a: compression area
110: piston head
120: pressing member
121a: incision
111: first support plate
112: second support plate
130: piston rod
140: flange
160: gripping part

Claims (14)

a cylinder forming a compression region therein;
a piston head reciprocating along the longitudinal direction of the cylinder while being inserted into the inner space of the cylinder;
a pressing member coupled to the piston head;
a first support plate formed on the central axis of the piston head and supporting surface pressure applied to the pressing member;
a second support plate spaced apart from the first support plate along the longitudinal direction of the piston head;
a first flow hole formed through the first support plate in a thickness direction;
a second flow hole formed through the second support plate in a thickness direction;
a pressing member coupled to surround outer circumferential surfaces of the first and second support plates; and
A cutout formed in the pressing member to guide the fluid to flow in only one direction;
When the piston head moves toward the compression region, the pressing member makes surface contact with the first support plate by the fluid pressure in the compression region and seals the incision,
When the piston head moves in a direction away from the compression region, the incision is opened due to the pressure of the fluid flowing through the first flow hole and the second flow hole, the piston assembly minimizing the negative pressure. According to claim 1,
The piston assembly for minimizing the negative pressure is provided with at least one cutout, formed in a linear shape relative to the projection surface of the pressing surface of the pressing member. According to claim 1,
The incision is formed in a circular or polygonal shape, and the first flow hole is displaced from a position projected mutually with the installation position of the incision, the piston assembly minimizing the negative pressure. According to claim 1,
At least one first cut portion formed by being cut from the outside of the first support plate in a radial direction toward the central axis of the piston rod; and
A piston assembly that minimizes negative pressure, including a second cut portion formed by at least one cut from the radially outer side of the second support plate toward the central axis of the piston rod. According to any one of claims 1 to 4,
A piston assembly for minimizing negative pressure, further comprising an inlet formed at an end portion of the cylinder in the longitudinal direction and through which air pressure formed by the piston head is injected. cylinder;
a cover for sealing an opening formed on one side of the cylinder in a longitudinal direction;
a mesh support that divides the inside of the cylinder into an accommodation space and a compression area between the cover and the cover;
a plurality of decorations filled in the accommodation space;
a piston head reciprocating along the longitudinal direction of the cylinder while being inserted into the inner space of the cylinder;
a pressing member coupled to the piston head;
a first support plate formed on the central axis of the piston head and supporting surface pressure applied to the pressing member;
a second support plate spaced apart from the first support plate along the longitudinal direction of the piston head;
a first flow hole formed through the first support plate in a thickness direction;
a second flow hole formed through the second support plate in a thickness direction;
a cutout formed in the pressing member to guide the fluid to flow in only one direction;
an elastic member elastically supported by the piston head in the inner space of the cylinder;
an opening hole formed at an opposite end of the cover along the longitudinal direction of the cylinder; and
A driving wire passing through the opening hole and fixed to the piston head;
When the piston head moves toward the compression region, the pressing member makes surface contact with the first support plate by the fluid pressure in the compression region and seals the incision,
When the piston head moves in a direction away from the compression region, the incision is opened due to the pressure of the fluid flowing through the first flow hole and the second flow hole, and pneumatic pressure using a piston assembly that minimizes negative pressure Fireworks. cylinder;
a cover for sealing an opening formed on one side of the cylinder in a longitudinal direction;
a mesh support that partitions the inside of the cylinder and forms an accommodation space between the cover and the cover;
a plurality of decorations filled in the accommodation space;
a pressing member reciprocating along the longitudinal direction of the cylinder while being inserted into the inner space of the cylinder;
a support member fixedly installed between the mesh supporter and the pressing member along the longitudinal direction of the cylinder;
a cutout formed at an end of the pressing member on the receiving space side;
a compression tube connected to the support member and the pressing member; and
A pneumatic accumulator using a piston assembly formed in the support member and including at least one through hole penetrating a thickness of the support member to minimize sound pressure. a pressure tank having a pressure chamber therein;
a piston head reciprocating along the longitudinal direction of the cylinder while being inserted into the cylinder formed at one side of the pressure tank;
a pressure member formed at an end of the piston head so as to perform compression toward the inside of the cylinder and in close contact with the inner circumferential surface of the cylinder;
an incision formed in the pressing member;
a one-way valve installed so that air pressure generated by compression of the pressing member is introduced into the pressure chamber;
a mounting groove formed on the other side of the pressure tank;
a projectile seated and fixed in the mounting groove and having an opening formed from the pressure tank toward the outside;
a cover sealing the opening;
A mesh support that is fixedly installed to partition the inside of the projectile;
a plurality of decorations filled between the cover and the mesh supporter;
an opening/closing member through which an inlet hole is formed at one side of the projectile in the mounting groove to communicate with the pressure chamber and selectively opens and closes the inlet hole;
a piston rod formed on an opposite side of the cylinder along the longitudinal direction centered on the pressing member and grippable to reciprocate the piston head; and
A pneumatic accumulator using a piston assembly that minimizes negative pressure, including an operating member having one end connected to the opening and closing member and the other end passing through the pressure tank. cylinder;
a cover for sealing an opening formed on one side of the cylinder in a longitudinal direction;
a mesh support that partitions the inside of the cylinder and forms an accommodation space between the cover and the cover;
a plurality of decorations filled in the accommodation space;
a piston head reciprocating along the longitudinal direction of the cylinder while being inserted into the inner space of the cylinder, and having a through hole penetrating in the longitudinal direction;
a pressing member formed at an end of the piston head on the receiving space side;
a pressure rod having a pressure chamber communicating with the piston head; and
Including a cutout formed to penetrate along the longitudinal direction of the pressing member,
The through-hole of the piston head communicates with the cutout, and the pneumatic gun using a piston assembly that minimizes negative pressure. delete According to claim 6,
The incision is formed in a circular or polygonal shape, and the first flow hole is displaced from a position projected mutually with the installation position of the incision, a pneumatic gun using a piston assembly to minimize sound pressure. According to claim 6,
At least one first cut portion formed by being cut from the outside of the first support plate in a radial direction toward the central axis of the piston rod; and
A pneumatic gun using a piston assembly that minimizes negative pressure, including a second cut portion formed by at least one cut from the radially outer side of the second support plate toward the central axis of the piston rod. According to claim 7 or 8,
The pneumatic gun using a piston assembly that has at least one cutout and is formed in a linear shape with respect to the projection surface of the pressing surface of the pressing member, minimizing negative pressure. According to claim 7,
A pressure rod formed on the opposite side of the compression tube around the pressure member and communicating with the pressure member;
A pressure chamber is provided inside the pressure rod, and a partition wall having a plurality of communication holes is interposed between the pressure rod and the pressure member.
A pneumatic gun using a piston assembly that minimizes negative pressure, wherein a gripping part is formed at an end located outside the cylinder along the longitudinal direction of the pressure rod, and at least one control hole is included in the gripping part.

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