KR20210111462A - A damper type pressure valve enable to prevent malfunction - Google Patents

Abstract

The present invention relates to a damper-type pressure valve capable of preventing a malfunction, comprising: a valve housing having a first housing and a second housing, wherein the first housing has an inlet formed on one side of the outer surface, has a first accommodation space therein and has a communication hole formed on the center of the upper surface, and the second housing is integrally formed on the upper part of the first housing, has an outlet formed on one side of the outer surface and has a second accommodation space which communicates with the first accommodation space through the communication hole and has an opened upper surface; a flexible film member shielding the upper surface of the second housing; a valve member including an operating unit, a rod unit and an opening and closing unit, wherein the operating unit has the upper surface coming in contact with the inner surface of the flexible film member, the rod unit has one end coming in contact with the lower surface of the operating unit and the other end penetrating the communication hole to be disposed in the first accommodation space, and the opening and closing unit has the upper surface coupled to the other end of the rod unit and opening or closing the communication hole; and an elastic member having both ends supported between the lower surface of the opening and closing unit and the inner surface of the first housing, and applying an elastic force to the opening and closing unit in the direction of the second accommodation space. The present invention, even when used for a long time, prevents a malfunction of the valve member due to deformation or inertia of the flexible film member, and thus prevents excessive application of ink pressure to a cartridge caused by leakage of ink while printing is not performed, thereby preventing damage to the cartridge or damage to a printer head caused by infiltration of the ink, flowing into the cartridge, into the printer head.

Description

A damper type pressure valve enable to prevent malfunction}

The present invention relates to a damper-type pressure valve, and more particularly, to a damper-type pressure valve capable of preventing malfunction in which a malfunction of the valve member does not occur even when the flexible film member is deformed or inertial due to long-term use. will be.

In general, an inkjet printer is provided with a cartridge for supplying ink in the printing process, and since only a certain amount of ink is filled in the cartridge, when the filled ink is completely consumed, it must be replaced with a new cartridge.

On the other hand, because cartridges are expensive, they are used by refilling ink in used cartridges rather than purchasing new cartridges. .

Meanwhile, in recent years, the above inconvenience has been solved by supplying ink by connecting an ink supply unit in which a large amount of ink is stored to a cartridge.

1 schematically shows a conventional ink supply device, FIG. 2 is a diagram for explaining the operation of the conventional damper-type pressure valve, and FIG. 3 is a diagram for explaining the problem of the conventional damper-type pressure valve.

Referring to FIG. 1 , the conventional ink supply device 1 ′ has an ink supply unit 100 that stores a large amount of ink therein and supplies ink to the cartridge C of the printer, the ink supply unit 100 and the cartridge C ) and a damper-type pressure valve 200 for intermittent supply of ink from the ink supply unit 100 to the cartridge (C).

On the other hand, the damper-type pressure valve 200, as shown in Figure 2, a first housing space (S1) is formed therein and a communication hole (201ab) is formed in the center of the upper surface of the first housing (201a), the first A second housing (201b) integrally formed on the upper portion of the housing (201a), the upper surface of which is open, and the second housing space (S2) communicating with the first receiving space (S1) through the communication hole (201ab) is formed. a valve housing 201 including a flexible film member 202 for shielding the upper surface of the second housing 201b, and a valve for intermittent ink inflow from the first housing 201a to the second housing 201b and a member 203 .

In addition, an inlet 201aa through which ink flows from the ink supply unit 100 is formed on one side of the outer surface of the first housing 201a, and on one side of the outer surface of the second housing 201b, from the first housing 201a to the second housing An outlet 201ba through which the ink flowing into the 201b is discharged to the cartridge C is formed.

In addition, the valve member 203 has an upper surface of an actuating plate 203a attached to one side of the inner surface of the flexible film member 202, one end is fixedly coupled to the lower surface of the actuating plate 203a, and the other end is a communication hole 201ab. ) through and includes an operating arm 203b disposed in the first accommodation space S1, and an opening/closing plate 203c coupled to the other end of the operating arm 203b and having a larger cross-sectional area than the communication hole 201ab.

In addition, an elastic member 204 is axially installed on the outer surface of the operating arm 203b, and the upper and lower ends thereof are supported on the bottom surface of the operation plate 203a and the upper surface of the first housing 201a, respectively, and the operation plate 203a). An upward elastic force is applied to

Since the above damper-type pressure valve 200 does not discharge the ink inside the cartridge C to the outside while printing is not in operation, as shown in (a), the first accommodating space S1 and the second accommodating space ( S2) Since both sides are filled with ink, the opening/closing plate 203c of the valve member 203 maintains a shielding state for shielding the communication hole 201ab.

And, during the cartridge (C) printing operation, as shown in (b), as the ink in the second accommodation space (S2) moves toward the cartridge (C), the pressure in the second accommodation space (S2) is lowered, so that the flexible film The member 202 presses the operation plate 203a downward so that the opening/closing plate 203c opens the communication hole 201ab.

As described above, the damper-type pressure valve 200 blocks the supply of ink from the ink supply unit 100 to the cartridge (C) during the printing non-operation, and supplies ink from the ink supply unit 100 to the cartridge (C) during the printing operation. Prevents excessive ink pressure from acting on (C).

However, when the damper-type pressure valve 200 is used for a long time, as shown in FIG. 3A , the flexible film member 202 is deformed to a state in which one edge of the operation plate 203a is pressed. This may cause a problem in which the communication hole 201ab is maintained in an open state.

In addition, as shown in FIG. 3(b), after long-time printing operation, inertia to maintain the state in which the flexible film member 202 presses the operation plate 203a occurs, the elastic member When the elastic restoring force of 204 is smaller than the inertia of the flexible film member 202 , the valve member 203 is not restored to its original position, so that the communication hole 201ab is maintained in an open state.

In detail, in the structure in which the elastic member 204 is coupled to the outer surface of the operating arm 203b as shown in FIG. 2 , the lower end of the elastic member 204 must be supported on the upper surface of the first housing 201a. The diameter of should be formed larger than the diameter of the communication hole (201ab).

That is, since the above structure limits the free design of the diameter of the elastic member 204 , the elastic restoring force of the elastic member 204 becomes smaller than the inertia of the flexible film member 202 .

As such, when the valve member 203 malfunctions due to deformation or inertia of the flexible film member 202 and the communication hole 201ab is maintained in an open state, excessive ink pressure is applied to the cartridge C even during non-operation of printing. As a result, the cartridge (C) may be damaged or the ink introduced into the cartridge (C) may penetrate into the print head, causing a problem in which the print head is damaged.

For the above reasons, there is an urgent need to develop a damper-type pressure valve in which a malfunction of the valve member 203 does not occur due to deformation or inertia of the flexible film member 202 even when used for a long time.

The present invention has been devised to solve the above problems, and an object of the present invention is a damper that can prevent malfunction of the valve member even when deformation or inertia of the flexible film member due to long-term use acts. It is to provide a type pressure valve.

According to the present invention for achieving the above object, a first housing having an inlet on one side of the outer surface, a first accommodating space is formed therein, and a communication hole formed in the center of the upper surface, and the outer surface integrally formed on the upper portion of the first housing A flexible film shielding the upper surface of the valve housing and the second housing including a second housing having an outlet formed on one side, communicating with the first accommodation space through the communication hole, and having an open upper surface of the second accommodation space. an operation part having a member and an upper surface in contact with the inner surface of the flexible film member; a rod part having one end in contact with a lower surface of the operation part and the other end passing through the communication hole to be disposed in the first accommodation space; A valve member coupled to the other end of the rod and including an opening/closing unit for opening or blocking the communication hole, one end is supported on a lower surface of the opening/closing unit, the other end is supported on the inner surface of the first housing, and a second accommodation in the opening/closing unit There is provided a damper-type pressure valve capable of preventing malfunction, characterized in that it includes an elastic member for applying an elastic force in a spatial direction.

Here, the elastic member is characterized in that it is arranged on a line parallel to the center of the axis of the rod part.

And, the diameter of the elastic member is characterized in that the same or smaller than the diameter of the rod portion.

In addition, an insertion hole formed on one side of the inner surface of the first housing in which the elastic member is supported and into which the elastic member is inserted, and an insertion hole extending from the circumference of the insertion hole in the inner direction of the first housing and receiving the elastic member It characterized in that it further comprises a receiving portion formed with a space portion, and a cap detachably coupled to the insertion hole.

According to the present invention as described above, even if the deformation or inertia of the flexible film member due to long-term use acts, malfunction of the valve member does not occur, so that ink leakage occurs during printing non-operation and excessive surplus pressure acts on the cartridge. This prevents the cartridge from being damaged or the ink flowing into the cartridge from penetrating into the print head and damaging the print head.

1 schematically shows a conventional ink supply device.
2 is a view for explaining the operation of the conventional damper-type pressure valve.
3 is a view for explaining a problem of the conventional damper type pressure valve.
Figure 4 schematically shows a damper-type pressure valve according to an embodiment of the present invention.
5 is a view for explaining the operation of the damper type pressure valve according to an embodiment of the present invention.
6 schematically shows a damper-type pressure valve according to another embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the drawings. It should be noted that the same components in the drawings are denoted by the same reference numerals wherever possible. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the gist of the present invention will be omitted.

4 schematically shows a damper-type pressure valve according to an embodiment of the present invention.

4, the damper-type pressure valve 1 according to an embodiment of the present invention is for controlling the supply of ink from the ink supply unit to the cartridge, and includes a valve housing 10, a flexible film member 20, and a valve. It consists of a member 30 and an elastic member 40 .

The valve housing 10 provides a space for accommodating the ink supplied from the ink supply unit to the cartridge, and provides installation areas for each configuration to be described later, and includes a first housing 11 and a second housing 12 . do.

The first housing 11 has a substantially rectangular parallelepiped shape, an inlet 11a through which ink is introduced is formed on one side of the outer surface, a first accommodation space S1 in which the ink is accommodated is formed, and a communication hole 11b is formed in the center of the upper surface. ) is formed.

Here, the communication hole 11b provides a passage through which the ink flowing into the first accommodating space S1 of the first housing 11 moves to the second accommodating space S2 of the second housing 12 to be described later. .

The second housing 12 is integrally formed with an upper portion of the first housing 11, an outlet 12a through which ink flows is formed on one side of the outer surface, and a second accommodation space S2 with an open upper surface is formed. .

The flexible film member 20 is formed in a thin film structure and shields the upper surface of the second housing 12 , and ink in the second accommodation space S2 is discharged to the outside to the second accommodation space S2 . When the internal pressure decreases, it moves to the inside of the second accommodating space S2 and serves to press the valve member 30 to be described later in the direction of the first accommodating space S1.

The valve member 30 controls the supply of ink from the first accommodating space S1 to the second accommodating space S2 by opening or blocking the communication hole 11b of the first housing, and an operation unit 31 . , including a rod part 32 and an opening/closing part 33 .

The actuating part 31 is a plate-shaped member, the upper surface of which is installed so as to be in contact with the inner surface of the flexible film member 20, and when pressed in the direction of the second accommodation space S2 by the flexible film member 20, the rod The portion 32 is pressed in the direction of the second accommodation space (S2).

The rod part 32 has a circular rod shape and is installed so that one end is in contact with the lower surface of the operation part 31 , and the other end passes through the communication hole 11b and is disposed in the first accommodation space S1 .

Here, the operation part 31 is preferably formed with a departure prevention groove (31a) larger than the diameter of the rod part 32 on one side of the lower surface where one end of the rod part 32 is in contact, and this separation prevention groove (31a) is depressed. ) serves to prevent the operation part 31 from being separated from the rod part 32 .

The opening/closing part 33 is coupled to the other end of the rod part 32 and is disposed at a position to block the communication hole 11a when the flexible film member 20 does not press the operation part 31 , the flexible film When the member 20 presses the operation part 31, it is moved in the direction of the second accommodation space S2 by the rod part 32 and is disposed at a position to open the communication hole 11a, so that the communication hole 11a ) to open or shield.

The elastic member 40 has one end supported on the lower surface of the opening/closing unit 33, the other end supported on the inner surface of the first housing 11, and applying an elastic force to the opening/closing unit 33 in the direction of the second accommodation space S2. plays a role

The elastic member 40 is disposed on a line parallel to the axial center of the rod part 32, and is preferably formed to be equal to or smaller than the diameter of the rod part 32.

As described above, the reason for arranging the elastic member 40 on a line parallel to the axial center of the rod part 32 is to precisely apply an elastic force to the center of the rod part 32 through the elastic member 40 to obtain the valve member 30 ) is to be operated more accurately, and the reason for forming the diameter of the elastic member 40 to be equal to or smaller than the diameter of the rod part 32 is the lower surface of the opening and closing part 33 and the inner surface of the first housing 11 . This is to enable the elastic member 40 to provide sufficient elastic force even in a short length between them.

5 is a view for explaining the operation of the damper-type pressure valve according to an embodiment of the present invention.

As described above, in the damper-type pressure valve 1 according to an embodiment of the present invention, the upper surface of the operating part 31 of the valve member 30 is disposed so as to be in contact with the inner surface of the flexible film member 20 without being fixed. and an elastic member ( 40 is disposed on a line parallel to the axial center of the rod part 32 .

As described above, according to the present invention, as shown in FIG. 5 (a), the flexible film member 20 is not fixed to one end of the rod part 32 but is in contact with the lower surface of the operation part 31. Even if it is deformed in a state of pressing one edge of the operating unit 31 , only the operating unit 31 is tilted to the side and the rod 32 is not pressed by the operating unit 31 , so the opening and closing unit 33 is connected to the communication hole 11b ) is maintained.

In addition, the present invention provides an elastic member ( As shown in Fig. 5 (b) through a structure in which 40) is arranged on a line parallel to the axial center of the rod part 32, the flexible film member 20 has a second accommodating space ( Even if the inertia to maintain the state of pressing the actuating part 31 in the direction S2) acts, the upper surface of the actuating part 31 receiving sufficient elastic force of the elastic member 40 is in contact with the flexible film member 20 . As it moves along the surface and returns to its original position, the opening/closing unit 33 can easily return to a state in which the communication hole 11a is shielded.

As described above, in the present invention, even if deformation or inertia of the flexible film member 20 occurs due to long-term use, the opening/closing unit 33 maintains a state in which the communication hole 11a is opened, or the opening/closing unit 33 is provided with the communication hole. Since the problem of not returning to the shielding position of (11a) does not occur, it is possible to prevent excessive ink pressure from acting on the cartridge due to leakage of ink during non-operation of printing.

Accordingly, there is no problem in that the cartridge is damaged by excessive ink pressure or the ink flowing into the cartridge penetrates into the print head and thus the print head is damaged.

6 schematically shows a damper-type pressure valve according to another embodiment of the present invention.

6, the damper-type pressure valve 1 according to another embodiment of the present invention is formed on one side of the inner surface of the first housing 11 on which the elastic member 40 is supported and the elastic member 40 is inserted. The insertion hole 11c and the receiving portion 11d extending from the circumference of the insertion hole 11c in the inner direction of the first housing 11 and having a space portion S3 in which the elastic member 40 is accommodated is formed; There is only a difference from an embodiment of the present invention in that a cap portion 11e that is detachably coupled to the insertion hole 11c is further formed, and the rest of the configuration is the same as in one embodiment of the present invention, so the detailed description thereof is to be omitted.

The insertion hole 11c is formed on one side of the inner surface of the first housing 11 on which the elastic member 40 is supported, and provides a path for inserting the elastic member 40 into the first receiving space S1 when assembling. .

The accommodating part 11d is formed to extend in the inner direction of the first housing 11 from the circumference of the insertion hole 11c, and a space S3 in which the elastic member 40 is accommodated is formed.

The accommodating portion 11d serves to prevent the elastic member 40 from being separated from the elastic member 40 while allowing the elastic member 40 to be stably disposed on the axis of the rod portion 32 of the valve member 30 .

The cap portion 11e is coupled to the insertion hole 11c to shield the insertion hole 11c and to support one end of the elastic member 40 .

The present invention not only provides ease of assembly during assembly work due to the structure in which the insertion hole 11c, the receiving part 11d, and the cap part 11e are further formed in the first housing 11 as described above, but also can be used for a long time. Even if a defect of the elastic member 40 is generated due to the elastic member 40, the elastic member 40 can be easily replaced, thereby providing ease of maintenance.

Although the present invention has been described with reference to the above preferred embodiments, various modifications and variations are possible without departing from the spirit and scope of the invention. Accordingly, the appended claims are intended to cover such modifications and variations as fall within the subject matter of the present invention.

1: damper pressure valve 10: valve housing
11: first housing 11a: inlet
11b: communication hole 11c: insertion hole
11d: accommodating part 11e: cap part
12: second housing
12a: outlet 20: flexible film member
30: valve member 31: operating part
31a: separation prevention groove 32: rod part
33: opening and closing part 40: elastic member
S1: first accommodating space S2: second accommodating space
S3: space

Claims (4)

The first housing is formed with an inlet on one side of the outer surface, a first receiving space is formed therein, and a communication hole is formed in the center of the upper surface, and the first housing is integrally formed with an upper portion of the first housing, and an outlet is formed on one side of the outer surface, and through the communication hole a valve housing communicating with the first accommodating space and including a second housing having a second accommodating space having an open upper surface;
a flexible film member for shielding the upper surface of the second housing;
an operation part having an upper surface in contact with the inner surface of the flexible film member; a rod part having one end in contact with a lower surface of the operation part and the other end passing through the communication hole to be disposed in the first accommodation space; a valve member coupled to the other end of the unit and including an opening/closing unit for opening or blocking the communication hole;
One end supported on the lower surface of the opening and closing part, the other end supported on the inner surface of the first housing, and comprising an elastic member for applying an elastic force to the opening and closing part in the direction of the second accommodation space. Damper type pressure valve. The method of claim 1,
The elastic member is a damper-type pressure valve capable of preventing a malfunction, characterized in that it is arranged on a line parallel to the center of the shaft of the rod part. The method of claim 1,
A damper-type pressure valve capable of preventing a malfunction, characterized in that the diameter of the elastic member is equal to or smaller than the diameter of the rod part. The method of claim 1,
An insertion hole formed on one side of an inner surface of the first housing in which the elastic member is supported and into which the elastic member is inserted, and a space portion extending from the periphery of the insertion hole in the inner direction of the first housing and receiving the elastic member A damper-type pressure valve capable of preventing malfunction, characterized in that it further comprises a formed receiving portion and a cap detachably coupled to the insertion hole.

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