WO2017179825A1

WO2017179825A1 - Low-cost one-way valve device

Info

Publication number: WO2017179825A1
Application number: PCT/KR2017/002886
Authority: WO
Inventors: 박장식; 강동수; 이성호; 모상남; 김성환; 전승민
Original assignee: 동일기계공업 주식회사
Priority date: 2016-04-12
Filing date: 2017-03-17
Publication date: 2017-10-19

Abstract

The present invention relates to a low-cost one-way valve device which transports a refrigerant in one direction such as the direction of a condenser and enables preventing the backflow of the refrigerant. The low-cost one-way valve device may comprise: a valve case which has a cylindrical form having an opened lower part, has at least one fluid outlet formed along the outer circumferential surface thereof, and has a fluid inlet, through which fluid enters, formed on the lower part; a valve core for selectively opening/closing the fluid inlet and the fluid outlet; an elastic member for applying elastic restoring force to the valve core in the direction in which the fluid inlet is closed; and an elastic stopping part which is protrudingly formed in the inner direction of the valve case.

Description

Low cost one-way valve device

The present invention relates to a low cost one-way valve device, and more particularly to a suction valve of a vehicle compressor.

In general, a compressor for a vehicle air conditioner is a device that selectively receives power from a power source by an intermittent action of a clutch, sucks refrigerant from an evaporator, compresses it by a linear reciprocating motion of a piston, and sends it toward a condenser. For example, in such a compressor, a variable displacement compressor type for controlling the inclination angle of the swash plate and varying the discharge capacity can be recently applied.

A suction valve may be installed in the vehicle air conditioner compressor to prevent the refrigerant from being discharged when the air conditioner is turned off and to prevent the discharged refrigerant from flowing back from the condenser to the compressor.

Such a conventional one-way valve may be composed of a body, a core, a spring, and a case.

For example, in the conventional one-way valve, the spring and the core in which the restoring force is applied by the spring are installed in the case in which the inlet is formed on one side, the case is assembled to the body, and the body is then air-conditioned in the vehicle. It can be assembled by press-fitting into the suction port of the rear head of the compressor.

Therefore, when the pressure of the crankcase is increased by the restoring force of the spring, the core may allow the refrigerant to flow in one direction while opening the valve, and close the valve during the reverse flow of the refrigerant to prevent refrigerant leakage and malfunction. Can be.

However, such a conventional one-way valve is composed of the four components described above, namely, the body, the core, the spring, and the case, so that the number of parts is unnecessarily large, thereby increasing the manufacturing cost of parts. There is a problem in that the assembly cost is increased when assembling the cost of the product.

The present invention is to improve such a conventional problem to reduce the number of parts and change the material to reduce the cost of manufacturing parts, and to reduce the cost of assembly by significantly reducing the number of assembly, and to maintain or improve the function and performance of the product It is an object of the present invention to provide a low-cost one-way valve device for a vehicle air conditioner that can be made, and can significantly reduce the weight and greatly improve the fuel economy of the vehicle. However, these problems are exemplary, and the scope of the present invention is not limited thereby.

According to one aspect of the present invention, a low cost one-way valve device is provided. The low-cost one-way valve device, the valve case is formed in a cylindrical shape of the lower portion is formed at least one or more fluid outlets along the outer peripheral surface, the fluid inlet through which the fluid inlet is formed; A valve core installed vertically inside the valve case to selectively open and close the fluid inlet and the fluid outlet, and having a cylindrical shape having an upper portion open; An elastic member installed between the valve case and the valve core to apply an elastic restoring force to the valve core in a direction of closing the fluid inlet; And an elastic locking portion formed at least one near the fluid inlet and protruding inwardly of the valve case such that the valve core does not escape from the inside of the valve case through the fluid inlet. have.

In the low-cost one-way valve device, the elastic engaging portion, the body is formed to protrude in the upper direction of the valve case along the outer peripheral surface of the valve case from the lower surface of the fluid outlet; And an inner hook portion formed on an upper portion of the body and protruding in the inward direction of the valve case so that the lower surface of the valve core can be caught. The inner hook portion includes a lower surface of the valve core seated thereon. The upper portion is formed to be flat so that the inclined surface may be formed on the lower portion so that the valve core can easily enter the valve case when the valve core is assembled to the valve case.

In the low-cost one-way valve device, the elastic engaging portion is formed on the upper portion of the body so that the valve case can be fixed to the counterpart, protruding outwardly of the valve case in a shape symmetrical with the inner hook portion And an outer hook portion, wherein the outer hook portion has an inclined surface formed at an upper portion thereof so that the valve case can easily enter the counterpart, and the catch of the counterpart after the valve case enters the counterpart The lower part may be formed flat so as to be caught in the groove.

In the low-cost one-way valve device, to prevent the elastic locking portion is deformed inward or outward, reinforce the elastic force of the elastic locking portion, and to prevent the valve case is rotated on the counterpart after being inserted into the counterpart It may further include an elastic support member formed along the inner circumferential surface or outer circumferential surface of the valve casing to elastically support the elastic engaging portion from the inside or the outside.

In the low-cost one-way valve device, one side of the elastic member for applying the elastic restoring force to the valve core is compressed to a first compression distance, the other side is compressed to a second compression distance shorter than the first compression distance to the valve core And an elastic deflection portion inclined such that a seating surface on which the elastic member of the valve core is seated or a seating surface on which the elastic member of the valve case is mounted to have an inclination angle so as to apply a biased elastic restoring force. can do.

In the low-cost one-way valve device, the valve case is formed to protrude in a cylindrical shape on the inner upper surface of the valve case so that the elastic restoring force of the elastic member can be deflected without the upper portion of the elastic member is separated from the home position. The elastic member is inserted, the eccentric protrusion having a central axis spaced apart by a predetermined eccentric distance from the central axis of the valve core; may include.

In the low-cost one-way valve device, the valve case is a concave protrusion that protrudes inwardly of the valve case to prevent the valve core from rotating inside the valve case and allow the valve core to move linearly. It may include; and the valve core, a concave groove formed to be concave in a shape corresponding to the concave protrusion may include.

According to some embodiments of the present invention made as described above, it is possible to reduce the number of parts and to change the material to reduce the cost of manufacturing parts, and to reduce the cost of the product by reducing the number of assembly, and to improve the function and performance of the product It is possible to implement a low-cost one-way valve device that can maintain or improve, and can significantly improve the fuel economy of the vehicle by greatly reducing the weight. Of course, the scope of the present invention is not limited by these effects.

1 is a perspective view showing a low-cost one-way valve device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view illustrating the low cost one-way valve device of FIG. 1. FIG.

3 to 5 are cross-sectional views showing the low-cost one-way valve device of FIG.

6 is a cross-sectional view showing a state in which the low-cost one-way valve device of Figure 1 is inserted into the counterpart.

7 is a perspective view showing a low-cost one-way valve device according to another embodiment of the present invention.

FIG. 8 is an exploded perspective view showing the low-cost one-way valve device of FIG. 7.

9 is a cross-sectional view showing a low-cost one-way valve device according to another embodiment of the present invention.

10 is a perspective view showing a low-cost one-way valve device according to another embodiment of the present invention.

FIG. 11 is a perspective view illustrating an outer elastic support member of the low-cost one-way valve device of FIG. 10.

12 is a perspective view showing a low-cost one-way valve device according to another embodiment of the present invention.

Figure 13 is an exploded perspective view showing a low-cost one-way valve device according to another embodiment of the present invention.

14 is a perspective view illustrating an inner elastic support member of the low-cost one-way valve device of FIG. 13.

15 is a perspective view showing a low-cost one-way valve device according to another embodiment of the present invention.

16 is an exploded perspective view showing the low-cost one-way valve device of FIG.

17 is a perspective view illustrating an inner elastic support member of the low-cost one-way valve device of FIG. 15.

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

The embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, and the following examples can be modified in various other forms, and the scope of the present invention is It is not limited to an Example. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In addition, the thickness or size of each layer in the drawings is exaggerated for convenience and clarity of description.

Embodiments of the present invention will now be described with reference to the drawings, which schematically illustrate ideal embodiments of the present invention. In the figures, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Accordingly, embodiments of the inventive concept should not be construed as limited to the specific shapes of the regions shown herein, but should include, for example, changes in shape resulting from manufacturing.

1 is a perspective view showing a low-cost one-way valve device 100 according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing a low-cost one-way valve device 100 of FIG. 3 to 5 are cross-sectional views showing the low-cost one-way valve device 100 of FIG. 1, and FIG. 6 is a cross-sectional view showing the low-cost one-way valve device 100 of FIG. 1 inserted into the counterpart C. FIG. .

First, as shown in FIGS. 1 and 2, the low-cost one-way valve device 100 according to an embodiment of the present invention may include suction damping (SDD) capable of reducing suction pressure pulsation and noise of a variable displacement compressor. Device), and may include a valve case 10, a valve core 20, an elastic member 30, and an elastic engaging portion 40.

As shown in FIG. 2, the valve case 10 is formed in a cylindrical shape with an open bottom, and at least one fluid outlet 11 is formed along an outer circumferential surface thereof, and a fluid inlet 12 through which fluid is introduced into the bottom. ) May be formed.

More specifically, the valve case 10 may be a structure having appropriate strength and durability capable of accommodating the valve core 20, the elastic member 30, and the elastic locking portion 40 therein. For example, the valve case 10 may be a structure configured by selecting any one or more materials from synthetic resin, steel, stainless steel, aluminum, magnesium, and zinc. However, the valve case 10 is not necessarily limited to FIG. 2, and members of a wide variety of materials capable of accommodating the valve core 20, the elastic member 30, and the elastic engaging portion 40 may be applied therein. have.

3 and 4, the valve case 10 may prevent the valve core 20 from rotating inside the valve case 10 and allow the valve core 20 to linearly move. It may include a concave protrusion 14 to protrude concave inwardly of the valve case 10. At this time, the valve core 20 includes a concave groove portion 21 which is formed to be concave in a shape corresponding to the concave protrusion 14, and thus the valve core 20 of the valve core 10 may be formed. The engagement of the recessed groove portion 21 allows the valve core 20 to be moved up and down with straightness without rotating in the valve case 10.

Accordingly, the outer circumferential surface of the valve case 10 is formed as a curved surface having a concave protrusion 14 rather than a circular shape, thereby improving the straightness of the valve core 20 and preventing generation of noise due to vibration of the valve core 20. Can be minimized. In addition, four fluid outlets 11 having a function of discharging the fluid are radially disposed along the outer circumferential surface of the valve case 10 to ensure ease of discharging of the fluid.

In addition, as shown in FIGS. 1 and 5, the valve core 20 is installed to be movable up and down inside the valve case 10 so that the fluid inlet 12 and the fluid outlet 11 according to the pressure of the fluid. It may be selectively opened and closed, and may be formed in a cylindrical shape with an open bottom.

More specifically, when the pressure of the fluid on the fluid inlet 12 side is increased, the valve core 20 is reversed by the pressure of the fluid to move upward in the valve case 10 along the inner circumferential surface of the valve case 10. As it rises, the fluid outlet 11 and the fluid inlet 12 can communicate.

Subsequently, when the fluid introduced through the fluid inlet 12 is discharged through the fluid outlet 11 and the pressure of the fluid on the fluid inlet 12 side is lowered, the valve core (or the valve core 10) is again along the inner circumferential surface of the valve case 10. 20 may descend in the downward direction of the valve case 10 to close the fluid inlet 12. At this time, as described above, the valve core 20 does not rotate in the valve case 10 due to engagement of the concave protrusion 14 of the valve case 10 and the concave groove 21 of the valve core 20. By moving up and down, the straightness of the valve core 20 can be improved, and noise generation due to the shaking of the valve core 20 can be prevented or minimized.

Therefore, when the pressure around the fluid inlet 12 rises above a certain level, the valve core 20 rises along the inner circumferential surface of the valve case 10 to communicate the fluid outlet 11 and the fluid inlet 12, and vice versa. When the pressure around the fluid inlet 12 is lowered to a predetermined level or less, the valve core 20 descends along the inner circumferential surface of the valve case 10 to close the fluid inlet 12, thereby preventing a reverse flow of the fluid. .

In this case, the fluid may be a refrigerant for the air conditioner of the vehicle, and the valve case 10 may be installed in the compressor for the air conditioner of the vehicle. Therefore, the low-cost one-way valve device 100 is installed in the compressor for the air conditioner can control the one-way flow of the refrigerant to prevent the refrigerant from flowing back.

In addition, as shown in FIG. 5, the elastic member 30 is provided between the valve case 10 and the valve core 20 to elastically restoring force to the valve core 20 in a direction of closing the fluid inlet 12. Can be applied. More specifically, the elastic member 30 may be applied to the compression coil spring to generate the elastic restoring force by the force that the coil spring is compressed in the valve case 10.

In addition, as shown in FIG. 5, the elastic engaging portion 40 is located near the fluid inlet 12 such that the valve core 20 does not escape from the inside of the valve case 10 through the fluid inlet 12. At least one or more may be formed to protrude inwardly of the valve case 10.

More specifically, the elastic engaging portion 40, the body 41 and the body 41 formed to protrude upward of the valve case 10 along the outer circumferential surface of the valve case 10 from the lower surface of the fluid outlet (11). It may include an inner hook portion 42 formed on the upper portion, protruding in the inward direction of the valve case 10 so that the lower surface of the valve core 20 can be caught.

For example, the inner hook portion 42, as shown in Figure 5, the upper surface is formed so that the lower surface of the valve core 20 can be seated, the valve core 20 is assembled to the valve case 10 When the valve core 20 can easily enter the valve case 10, the inclined surface 42a may be formed at the bottom.

Accordingly, when the valve core 20 is assembled to the valve case 10, the body 41 is elastically connected to the valve case 20 while the outer circumferential surface of the valve core 20 and the inclined surface 42a of the inner hook portion 42 contact with each other. 10) can be flipped outward. Subsequently, after the valve core 20 passes through the inner hook portion 42, the body 41 is retracted toward the inner side of the valve case 10 by elasticity, and the flat upper portion of the inner hook portion 42 is formed. The lower surface of the furnace valve core 20 can be supported.

In addition, as shown in Figure 6, the elastic locking portion 40 is formed on the upper portion of the body 41 so that the valve case 10 can be fixed to the counterpart (C), the inner hook portion 42 It may further include an outer hook portion 43 is formed to protrude in the outward direction of the valve case 10 in a symmetrical shape with.

More specifically, the outer hook portion 43 has an inclined surface 43a formed at an upper portion thereof so that the valve case 10 can easily enter the counterpart C, and the valve case 10 is provided with the counterpart C. The lower part may be formed flat so as to be caught by the catching part G of the counterpart C after entering.

Therefore, when assembling the valve case 10 to the counterpart C, the body 41 is elastically attached to the valve case while the assembly portion of the counterpart C and the inclined surface 43a of the outer hook portion 43 come into contact with each other. It can be pinched in the inward direction of (10). Subsequently, when the outer hook portion 43 is seated on the locking portion G of the counterpart C, the body 41 is returned to its original position while being unfolded in the outward direction of the valve case 10 by elasticity, and the valve The case 10 can be supported so as not to be separated from the counterpart C.

In addition, as shown in FIG. 6, the elastic member 30 seating portion of the valve case 10 and the elastic member 30 of the valve core 20 are formed to be deflected from the central axis of the valve case 10. One side of the valve core 20 is always in contact with the inner surface of the valve case 10 to prevent noise caused by the shaking of the valve core 20.

Therefore, the low-cost one-way valve device 100 according to an embodiment of the present invention, the body is removed form, it can be made of a simple structure of the valve case 10, the valve core 20 and the elastic member 30. .

That is, the hook-shaped elastic engaging portion 40 is formed on one side of the valve case 10, so that the valve core 20 can be easily assembled into the valve case 10, thereby improving the assemblability. After assembling the valve core 20, the valve core 20 may be firmly supported so as not to be separated from the inside of the valve case 10.

Accordingly, the one-way flow of the fluid can be controlled while the body part is deleted, and the material of the valve case 10 is made of steel or synthetic resin, thereby reducing the number of parts and changing the material to reduce the part manufacturing cost. In addition, the cost of assembly can be significantly reduced by reducing the number of assembly, and the function and performance of the product can be maintained or improved, and the weight can be greatly reduced to significantly improve the fuel economy.

7 is a perspective view illustrating a low cost one-way valve device 200 according to another embodiment of the present invention, and FIG. 8 is an exploded perspective view illustrating the low cost one-way valve device 200 of FIG. 7.

As shown in FIGS. 7 and 8, three fluid outlets 11 on the outer circumferential surface of the valve case 10 are radially disposed along the outer circumferential surface of the valve case 10 according to a user or design needs. It is possible to further simplify the structure of the low-cost one-way valve device 200 while ensuring ease of the discharge. At this time, the elastic locking portion 40 may also have the same number as the number of formation of the fluid outlet (11).

Therefore, according to the user or design needs, the structure of the low-cost one-way valve device 200 can be more simply configured to reduce the cost of manufacturing parts and to reduce the number of assembly operations, thereby significantly lowering the cost of the product.

9 is a cross-sectional view showing a low-cost one-way valve device 300 according to another embodiment of the present invention.

As shown in FIG. 9, in the low-cost one-way valve device 300 according to another embodiment of the present invention, one side of the elastic member 30 that applies elastic restoring force to the valve core 20 may have a first compression distance ( L1), the other side is compressed to a second compression distance (L2) shorter than the first compression distance (L1) to apply the elastic restoring force biased to the valve core 20, the elastic member of the valve core 20 It may include an elastic deflection portion 90 is formed to be inclined so that the seating surface on which the 30 is seated or the seating surface on which the elastic member 30 of the valve case 10 is seated has an inclination angle (A).

More specifically, as shown in FIG. 9, due to the elastic deflection portion 90 formed in the valve core 20, the valve core 20 receives the elastic restoring force biased from the elastic member 30, thereby providing elastic restoring force. The valve core 20 is inclined toward the weak side, so that the inclined side of the valve core 20 can always be in contact with the inner circumferential surface of the valve case 10. In addition, although not shown, the seating surface on which the elastic member 30 is seated also forms the elastic deflection portion 90 having the inclination angle A, so that the valve core 20 is the elastic member 30. Can be applied to the elastic restoring force deflected from).

In addition, as shown in FIG. 9, the valve case 10 includes a valve case 10 such that the elastic restoring force of the elastic member 30 may be deflected without the upper portion of the elastic member 30 coming off from the home position. It is formed to protrude in a cylindrical shape on the inner upper surface of the elastic member 30 is inserted, and may include an eccentric protrusion 13 having a central axis spaced apart from the central axis of the valve core 20 by a predetermined eccentric distance (D). have.

Therefore, the elastic member 30 applying the elastic restoring force to the valve core 20 may apply the elastic restoring force acting on the left and right sides of the valve core 20 to the valve core 20 so as to be deflected from each other. At this time, the eccentric protrusion 13 of the elastic restoring force deflected with respect to the central axis of the valve core 20 so that the upper portion of the elastic member 30 can be stably supported to effectively apply the deflected elastic restoring force to the valve core 20. It is formed to be spaced apart by a certain eccentric distance (D) in the direction, it is possible to induce the elastic member 30 inclined with respect to the central axis of the valve core 20.

Therefore, the inclined side of the valve core 20 is always in contact with the inner circumferential surface of the valve case 10 when the valve core 20 moves in and out of the valve case 10, so that the vibration of the valve core 20 is reduced. It can be prevented from occurring. In addition, noise may be minimized due to vibration of the valve core 20, and thus the reliability of the low-cost one-way valve device 100 may be improved.

10 is a perspective view showing a low-cost one-way valve device 400 according to another embodiment of the present invention, Figure 11 is a perspective view showing the outer elastic support member 50 of the low-cost one-way valve device 400 of FIG. And, Figure 12 is a perspective view showing a low-cost one-way valve device 500 according to another embodiment of the present invention.

As shown in FIG. 10, the low-cost one-way valve device 400 according to another embodiment of the present invention prevents the elastic locking portion 40 from spreading outward and reinforces the elastic force of the elastic locking portion 40. The valve case 10 is formed along the outer circumferential surface of the valve case 10 to prevent the valve case 10 from being rotated or released from the counterpart after being pressed into the counterpart to elastically support the elastic locking part 40 from the outside. It may further include an outer elastic support member (50).

More specifically, the receiving groove H1 on which the outer elastic support member 50 may be seated is formed on the lower outer circumferential surface of the valve case 10 to induce the outer elastic support member 50 not to be released from the correct position. have.

Further, as shown in FIG. 11, the outer elastic support member 50 is formed in a circular ring shape so that the outer elastic support member 50 does not rotate or flow after being assembled to the valve case 10. Protruding portions 51 protruding in the direction of the central axis of the outer elastic support member 50 may be formed at both end surfaces. Accordingly, as shown in FIG. 10, the protrusion 51 is inserted into the fixing groove 15a formed in the accommodation groove H1 of the valve case 10 so that the outer elastic support member 50 rotates or flows. Can be prevented.

Accordingly, the outer elastic support member 50 is formed in a shape surrounding the plurality of elastic locking portions 40 on the outer circumferential surface of the valve case 10, so that the elastic locking portions 40 are supported by the reaction force supporting the valve core 20. It can prevent that it spreads outward and reinforce the restoring elastic force of the elastic locking part 40. FIG. In addition, as shown in Figure 12, according to the user or design needs, the receiving groove (H2) of the valve case 10 is formed to pass through the body 41 of the elastic locking portion 40, the elastic locking portion 40 can further increase the force supporting the valve core 20, and can also reinforce the elastic force even more.

Therefore, the low-cost one-

way valve device

400, 500 according to another embodiment of the present invention includes an outer elastic support member 50 that can prevent the elastic locking portion 40 from being deformed, thereby changing the external environment. It is possible to prevent the elastic locking portion 40 from being deformed and reinforce the elastic force due to the dimensional change of the injection molded product. In addition, after the low-cost one-way valve device (400, 500) is assembled by pressing the counterpart (C), it is possible to prevent the fixing force is lost to rotate or flow due to the change in the dimensions of the injection molded product according to the change in the external environment.

FIG. 13 is an exploded perspective view showing a low-cost one-way valve device 600 according to another embodiment of the present invention, and FIG. 14 is a perspective view showing the inner elastic support member 70 of the low-cost one-way valve device 600 of FIG. 13. .

As shown in FIG. 13, the low-cost one-way valve device 600 according to another embodiment of the present invention prevents the elastic locking portion 40 from retracting inward and reinforces the elastic force of the elastic locking portion 40. In addition, the valve case 10 is formed along the inner circumferential surface of the valve case 10 to prevent the valve case 10 from being rotated or released from the counterpart after being pressed into the counterpart to elastically support the elastic locking part 40 from the inside. An inner elastic support member 70 may be further included.

More specifically, the inner elastic support member 70 is formed in a circular ring shape as shown in FIG. 14 so that the inner elastic support member 70 does not rotate or flow after being assembled to the valve case 10. According to), the protrusions 71 protruding in the direction of the central axis or the opposite direction of the inner elastic support member 70 can be formed. Accordingly, as shown in FIG. 13, the protrusion 71 is inserted into the fixing groove 15c formed in the body 41 of the elastic engaging portion 40, so that the inner elastic support member 70 rotates or flows. It can be prevented, and after the low-cost one-way valve device 600 is pressed into the counterpart (C) and assembled, it is possible to prevent the fixing force is lost due to the dimensional change of the injection molded product according to the external environment changes to prevent rotation or flow.

Therefore, the inner elastic support member 70 is formed in a shape surrounding the plurality of elastic locking portions 40 on the inner circumferential surface of the valve case 10, so that the elastic locking portion 40 is applied to the reaction force supporting the valve core 20. It is possible to prevent it from being retracted inward and to reinforce the restoring force of the elastic locking portion 40.

Therefore, the low-cost one-way valve device 600 according to another embodiment of the present invention, after pressing the low-cost one-way valve device 600 to the counterpart (C) and assembled into a dimensional change of the injection molded product according to the external environment change Including the inner elastic support member 70 that can prevent the fixing force is lost to rotate or flow, to prevent deformation of the elastic locking portion 40 due to the dimensional change of the injection molded product according to the change of the external environment and reinforce the elastic force can do.

15 is a perspective view showing a low-cost one-way valve device 700 according to another embodiment of the present invention, Figure 16 is an exploded perspective view showing a low-cost one-way valve device 700 of Figure 15, Figure 17 is a low-cost type of FIG. It is a perspective view which shows the inner side elastic support member 80 of the one-way valve apparatus 700. FIG.

As shown in FIG. 16, the low-cost one-way valve device 700 according to another embodiment of the present invention prevents the elastic locking portion 40 from retracting inward and reinforces the elastic force of the elastic locking portion 40. In addition, the valve case 10 is formed along the inner circumferential surface of the valve case 10 to prevent the valve case 10 from being rotated or released from the counterpart after being pressed into the counterpart to elastically support the elastic locking part 40 from the inside. It may further include an inner elastic support member 80.

More specifically, the inner elastic support member 80 is a spring in the form of a rounded leaf spring, so that the inner elastic support member 80 does not rotate or flow after being assembled to the valve case 10, as shown in FIG. 17. As described above, the wing portion 82 protruding in a symmetrical shape may be formed on the outer circumferential surface of the inner elastic support member 80. Accordingly, as shown in FIG. 15, the wing 82 is inserted into the fixing groove 15d formed in the valve case 10, thereby preventing the inner elastic support member 80 from rotating or flowing. . In addition, by forming the curled portion 81 at both ends of the inner elastic support member 80, the assembly shape is configured to be assembled smoothly when assembling the valve case 10, the strength and elastic force of the inner elastic support member 80 Can be further reinforced.

Therefore, the inner elastic support member 80 is formed in a shape surrounding the plurality of elastic locking portions 40 on the inner circumferential surface of the valve case 10, so that the elastic locking portion 40 is applied to the reaction force supporting the valve core 20. It is possible to prevent it from being retracted inward and to reinforce the restoring force of the elastic locking portion 40.

Therefore, the low-cost one-way valve device 700 according to another embodiment of the present invention, including the inner elastic support member 80 that can prevent the elastic engaging portion 40 is deformed, according to the external environment change The elastic locking part 40 may be prevented from being deformed due to the dimensional change of the injection molded product, and the elastic force may be reinforced.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

According to some embodiments of the present invention made as described above, it is possible to reduce the number of parts and to change the material to reduce the cost of manufacturing parts, and to reduce the cost of assembly by reducing the number of assembly.

Claims

A valve case which is formed in a cylindrical shape having a lower portion, at least one or more fluid outlets are formed along an outer circumferential surface thereof, and a fluid inlet port through which fluid is introduced;

A valve core installed vertically inside the valve case to selectively open and close the fluid inlet and the fluid outlet, and having a cylindrical shape having an upper portion open;

An elastic member installed between the valve case and the valve core to apply an elastic restoring force to the valve core in a direction of closing the fluid inlet; And

An elastic engaging portion formed at least one near the fluid inlet and protruding inwardly of the valve case such that the valve core does not escape from the inside of the valve case through the fluid inlet;

Including, low-cost one-way valve device.
The method of claim 1,

The elastic locking portion,

A body protruding from the lower surface of the fluid outlet in an upward direction of the valve case along an outer circumferential surface of the valve case; And

And an inner hook portion formed on an upper portion of the body and protruding in the inward direction of the valve case so as to catch a lower surface of the valve core.

The inner hook portion,

Low-cost one-way, the upper portion is formed flat so that the lower surface of the valve core is seated, the inclined surface is formed at the lower portion so that the valve core can easily enter the valve case when the valve core is assembled to the valve case Valve device.
The method of claim 2,

The elastic locking portion,

An outer hook portion formed on an upper portion of the body to be fixed to the counterpart and protruding in an outward direction of the valve case in a shape symmetrical with the inner hook portion;

The outer hook portion,

An inclined surface is formed on the upper portion so that the valve case can easily enter the counterpart, and a lower portion is formed flat so that the valve case can be caught by the catching groove of the counterpart after entering the counterpart. Device.
The method of claim 1,

An inner circumferential surface of the valve case to prevent the elastic locking portion from being deformed inward or outward, reinforce the elastic force of the elastic locking portion, and prevent the valve case from being rotated in the counterpart after being inserted into the counterpart; An elastic support member formed along an outer circumferential surface to elastically support the elastic locking portion at an inner side or an outer side thereof;

Further comprising, a low-cost one-way valve device.
The method of claim 1,

One side of the elastic member applying the elastic restoring force to the valve core may be compressed to a first compression distance, and the other side may be compressed to a second compression distance shorter than the first compression distance to apply the elastic restoring force biased to the valve core. An elastic deflection portion formed to be inclined such that a seating surface on which the elastic member of the valve core is seated or a seating surface on which the elastic member of the valve case is seated have an inclination angle;

Further comprising, a low-cost one-way valve device.
The method of claim 5,

The valve case,

The elastic member is inserted into the cylindrical upper surface of the valve case so that the elastic restoring force of the elastic member can be deflected without the upper portion of the elastic member being displaced from the home position. An eccentric protrusion having a central axis spaced apart from the axis by a predetermined eccentric distance;

Including, low-cost one-way valve device.
The method of claim 1,

The valve case includes a concave protrusion protruding concave inwardly of the valve case to prevent the valve core from rotating inside the valve case and allow the valve core to linearly move.

The valve core may include a concave groove portion concavely formed in a shape corresponding to the concave protrusion portion;

Including, low-cost one-way valve device.