JPH0620963U - Valve body and connecting closed body - Google Patents

Abstract

(57) [Summary] [Purpose] It is extremely easy to manufacture, does not impair the function as a check valve even if it is used for a long time, and when used as a sealed body, it seals without depending on the internal pressure of the sealed body. An object is to provide a valve body capable of keeping a body airtight. [Structure] The valve body 1 made of a flexible film 3 has a bag-like shape in which a peripheral edge portion is sealed except for a side serving as an internal opening 9 communicating with the inside of the closed body 20. However, on the opposite side of the internal opening 9, an external opening 11 communicating with the outside of the sealed body is provided so that a pipe can be inserted. Further, one or both of the contact surfaces formed by overlapping the flexible films 3 serve as the adhesive surface 5. The sealed body 2 is formed by the air supply pipe 25 inserted from the outer opening 11 to the middle of the valve body 1.
When the air is sent to 0, the internal opening 9 is separated and opened by the pressure of the gas 26 to be sent, and the sealed body 20 is swollen. Then, when the air supply is stopped, the inner opening 9 is closely attached and the valve is closed to keep the inside of the sealed body 20 airtight.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a simple valve body and a connecting sealing body using the valve body.

[0002]

[Prior art]

 The conventional valve body has a flat tubular structure made of a flexible film, and one end of the valve body is attached to the outside of the closed body and the other end is opened to the inside of the closed body. When the fluid is fed and then the feeding is stopped, the internal pressure of the sealed body and the restoring force of the flexible membrane close the membranes of the internal openings to close the valve and keep the sealed body airtight. Were known to have. Such a valve body has been regarded as useful because it can be easily attached to a closed body and its tightness is secured.

[0003]

[Problems to be solved by the device]

 However, such a valve body has a defect that the airtightness of the sealed body is impaired when the fluid is repeatedly fed into the sealed body and the fluid is withdrawn from the sealed body. That is, the fluid is sent to the sealed body directly from the outer opening of the valve body or by the transport pipe inserted therethrough, and the fluid is withdrawn from the sealed body from the outer opening of the valve body to the inner opening. Since the withdrawal pipe inserted through the inside of the sealed body is used for withdrawal, if this operation is repeated, the flexible membrane forming the valve body is distorted due to the fluid itself or its pressure and / or the shape of the pipe, and the membrane is deformed. The airtightness of the hermetically sealed body was impaired due to the deterioration of the tightness between them.

In order to solve this drawback in Japanese Utility Model Laid-Open No. 61-20969, a thin piece of rigid elasticity was attached along the wall of the valve body near the end of the valve body on the inner opening side to prevent distortion of the membrane. However, attaching a thin piece of rigid elasticity to the valve body requires time and effort such as providing a pocket in the valve body, so it is not a simple method.

Furthermore, in order to close the conventional valve body, it is necessary to sufficiently increase the internal pressure of the sealed body, and if this internal pressure is insufficient, the hermeticity of the sealed body cannot be maintained. The present invention solves the above drawbacks, is extremely easy to manufacture, does not impair the function as a check valve even when used for a long period of time, and when used in a sealed body, does not depend on the internal pressure of the sealed body. It is an object of the present invention to provide a valve body that can keep a sealed body airtight.

[0006]

[Means for Solving the Problems]

 The valve body according to the first invention uses fluid passages between flexible membranes, and when the fluid enters from the outside or a transfer pipe is inserted, the flexible membrane separates from the valve to open and the fluid enters. Is a valve body in which the flexible film is brought into close contact with the valve to close the valve by stopping the transport pipe or withdrawing the transport pipe, and one or both of the contact surfaces of the flexible film are adhesive. .

A connecting hermetically sealed body as a second invention comprises a plurality of hermetically sealed bodies having the valve body attached to one end thereof, the plurality of hermetically sealed bodies being connected to each other, and the two hermetically sealed bodies in a connected relationship are The gist is that the outer opening of the valve body attached to one sealing body communicates with the inside of the other sealing body.

[0008]

[Action]

 The mechanism for closing the valve body of the first invention mainly includes the action that the flexible film forming the valve body adheres due to the adhesiveness of the contact surface of the flexible film. Further, when this valve body is used as the sealing body, when the internal pressure of the sealing body is sufficiently high, the internal pressure further improves the adhesion of the flexible film.

Further, the flexible membrane for forming the valve body by the fluid itself or its pressure and / or the shape of the pipe even when the operation of feeding and withdrawing the fluid through the valve body of the first invention is repeated. As a mechanism for restoring the original shape without distortion, in addition to the flexible film that constitutes the valve body having a restoring force, the flexible film has adhesiveness on the contact surface. Therefore, the restored state can be maintained.

The connecting hermetically sealed body of the second invention can be adapted to various shapes of objects by changing the connecting direction in the connecting direction.

[0011]

【Example】

 The present invention will be described below with reference to the drawings illustrating an embodiment. In addition, in each of the following embodiments of the first invention, a valve body for a sealed body is taken up for ease of explanation, but these valve bodies may be used not only in the sealed body but also in an open body. it can.

FIG. 1 is a front view of a first embodiment of the first invention. The valve body 1 of the first embodiment of the first invention is formed by folding one flexible membrane 3 into two or by laminating two flexible membranes 3 together. Further, except for the side which becomes the internal opening 9 communicating with the inside of the hermetically sealed body, the peripheral portions are sealed by heat or an adhesive to form seal portions 7 and 7 ′, which form a bag shape. However, on the opposite side of the internal opening 9, an external opening 11 communicating with the outside of the sealed body is provided so that a pipe can be inserted. Further, one or both of the contact surfaces formed by overlapping the flexible films 3 serve as the adhesive surface 5. The adhesive surface 5 has adhesiveness by sticking an adhesive film to the flexible film 3, coating an adhesive, or by forming the flexible film 3 itself from the adhesive film. . Examples of the flexible film 3 include polymer films such as polyester and polypropylene, or paper, cloth, metal films, and the like, and those having adhesiveness include, for example, a high molecular film whose main component is polyvinylidene chloride. And so on. The adhesive surface 5 may be, for example, a polymer film mainly composed of polyvinylidene chloride, a rubber-based or acrylic-based high-molecular liquid used for an adhesive, an adhesive having a weak adhesive force, or the like. It is formed by. As described above, the valve body 1 can be manufactured very easily.

FIG. 2 is a front view of the sealing body 20 to which the valve body 1 of the first embodiment of the first invention is attached. The closed body 20 is a highly airtight container, and is a cylindrical shape formed of a polymer film or a metal film, with its upper end 21 and lower end 23 sealed by heat or an adhesive. However, before sealing the upper end portion 21, the valve body 1 is installed in the cylinder near the center of the upper end portion 21 to form the outer surface of the upper side of the valve body 1 (the side where the external opening 11 is provided). The membrane 3 and the upper end portion 21 are sealed by heat or an adhesive so as to be integrated. At this time, the work is easy if the auxiliary tool is inserted so that the external opening 11 is not closed. As described above, the valve body 1 can be attached to the sealed body 20 very easily.

FIGS. 3 and 4 are a perspective view and a schematic end view showing the function of maintaining airtightness after air is fed to the sealing body 20 to which the valve body 1 of the first embodiment of the first invention is attached, and FIG. ) Is a perspective view when air is being supplied to the sealed body 20 from the outside, FIG. 3B is a schematic end view taken along line AA of FIG. 3A, and FIG. FIG. 4B is a perspective view when stopped, and FIG. 4B is a schematic end view taken along the line BB of FIG.

When air is sent to the sealing body 20 by the air sending pipe 25 which is inserted from the outer opening 11 to the middle of the valve body 1, the inner opening 9 is separated and opened by the pressure of the sent gas 26, and the airtightness is sealed. The body 20 swells up (FIGS. 3A and 3B). At this time, the air supply pipe 25 may be slightly inserted through the external opening 11. You may also send air directly from the outside. Furthermore, the air supply pipe 25 may be inserted from the outer opening 11 through the inner opening 9 to the inside of the sealed body 20, and in this case, the inner opening 9 is separated and opened by the air supply pipe 25.

Next, when the air supply is stopped, the internal opening 9 is brought into close contact with the internal pressure of the sealing body 20 due to the adhesive force of the adhesive surface 5 and the internal pressure of the sealing body 20 to close the valve, and the inside of the sealing body 20 is kept airtight (see FIG. (B)). However, when the air supply pipe 25 is inserted from the outer opening 11 through the inner opening 9 to the inside of the closed body 20, the air supply pipe 25 is closed by pulling out the air supply pipe 25 from the valve body 1, and the inside of the closed body 20 is airtight. Keep on.

FIG. 5 is a perspective view and a schematic end view showing the function of exhausting air from the sealed body 20 to which the valve body 1 of the first embodiment of the first invention is attached. And (b) is a schematic end view of C-C, and (c) is a schematic end view showing a state in which exhaust from the sealed body 20 is completed.

External pressure is applied to the sealed body 20, and the gas 26 is discharged to the outside through an exhaust pipe 27 that is inserted from the outer opening 11 to the inner portion of the sealed body 20 through the inner opening 9 (see FIG. )), The exhaust is completed when the closed body 20 becomes flat (FIG. 5C). The state where the exhaust pipe 27 is removed from the sealed body 20 after the exhaust is completed is flat and therefore does not become bulky during storage and does not take up much space.

Even if such an air feeding / exhausting operation is repeated, in addition to the flexible film 3 forming the valve body 1 having a restoring force, the flexible film 3 adheres closely. Since the adhesive state of the adhesive surface 5 formed on the surface maintains the restored state, the film is not distorted by the shapes of the air supply pipe 25 and the exhaust pipe 27.

FIG. 6 is a front view of a second embodiment of the first invention. The valve body 30 is formed by stacking two flexible films 31. One side of the valve body 30 is sealed with heat or an adhesive to form seal portions 37, 37 'except that an external opening 35 communicating with the outside of the closed body is provided so that a pipe can be inserted. , The other sides are not sealed. Therefore, all the unsealed sides become internal openings 39. Further, one or both of the contact surfaces formed by overlapping the flexible films 31 are the adhesive surfaces 33. The flexible film 31 and the adhesive surface 33 are made of the same material as in the first embodiment of the first invention. The valve body 30 of the second embodiment of the first invention has a simplified seal portion as compared with the valve body 1 of the first embodiment of the first invention, and therefore can be manufactured more easily.

FIG. 7 is a perspective view showing a use state of the valve body 30 attached to the sealed body, (a) is a perspective view showing a valve open state, and (b) is a perspective view showing a valve closed state. . When air is fed from the external opening 35 in the same manner as in the first embodiment of the first invention, the two flexible membranes 31 that were in close contact are separated from each other to open the valve (FIG. 7 (a)), When the air is stopped, the two flexible films 31 are brought into close contact with each other due to the internal pressure of the sealed body and the adhesive force of the adhesive surface to close the valve (FIG. 7 (b)). The operation and effect of the valve body 30 of the second embodiment of the first invention is similar to the valve body 1 of the first embodiment of the first idea.

FIG. 10 is a front view of a third embodiment of the first invention. The valve body 40 is provided with seal portions 41a, 41b, 41c, 41d at the four corners of the rectangle forming the valve body 40 so as not to be displaced when the two flexible membranes 31 are in close contact with each other. The same as the valve body 30 of the second embodiment of the first invention. The operation and effect of the valve body 40 of the third embodiment of the first idea are the same as those of the valve body 1 of the first embodiment of the first invention.

FIG. 8 is a front view and a perspective view of the first embodiment of the second invention, FIG. 8 (a) is a front view of the connecting sealing body 50, and FIG. 8 (b) is the connecting sealing body after air feeding. It is a perspective view of 50.

The connected sealing body 50 of the present embodiment is composed of a tubular body 51 made of a flexible film and a plurality of valve bodies 1. In order from the upper end portion 53 of the tubular body 51, the valve bodies 1 are installed inside the tubular body 51 at regular intervals longer than the long side of the valve body 1, and the upper side of each valve body 1 (the outer opening 11 is provided). The side) and the tubular body 51 are sealed with heat or an adhesive so that the external opening 11 is not closed, and the tubular body 51 is divided into a plurality of small chambers 57 by the sealing portion 55. At this time, the work is easy if an auxiliary tool is inserted into the external opening 11. The lower end 59 of the cylindrical body 51 is also sealed by heat or an adhesive. In the connecting closed body 50 configured in this way, the two small chambers 57 in a connecting relationship are such that the outer opening 11 of the valve body 1 attached to one small chamber 57 communicates with the inside of the other small chamber 57. It has a structure that

FIG. 9 is a perspective view showing an example of use of the connection sealing body 50. The exhaust pipe 61 is inserted through the external opening 11 of the upper end portion 53 of the connected hermetically sealed body 50 in a state where all the small chambers 57 are inflated, and the pipe port 63 reaches the inside of the arbitrary small chamber 57 to exhaust the exhaust gas. All the small chambers 57 connected to the upper part from the small chamber 57 are exhausted through the exhaust pipe 61 through the gap formed between the pipe 61 and the external opening 11 and can be made flat (FIG. 9). (I)).

Further, the air supply pipe 65 is inserted through the outer opening 11 of the upper end portion 53 of the flat concatenated hermetically sealed body 50, passes through the inner opening 9 of the arbitrary small chamber 57, and reaches its inside through the pipe opening 67. When the air is blown (FIG. 9 (b)), the valve body 1 through which the air supply pipe 65 is inserted is separated by the air supply pipe 65, and the other valve bodies 1 are separated by the pressure of the gas to be supplied, so that the external opening 11 is separated. Since the valve is opened, gas is sent into all the small chambers 57 of the connection sealing body 50. Next, by extracting the air supply pipe 65, all of the small chambers 57 of the connection sealing body 50 can be made inflated.

Since such a connection hermetically sealed body 50 can be changed in the connection direction, it can be adapted to various shapes of articles. Also, since the exhausted state is flat, it does not occupy a place during storage or transportation. FIG. 11 is a front view of the second embodiment of the second invention.

The connection sealing body 70 of the present embodiment is composed of a cylinder body 71 and a valve body portion 73, and a plurality of valve bodies 72 are continuously and integrally formed in the valve body portion 73. First, in order to form the valve body portion 73, a flexible film 77 having at least one surface that is an adhesive surface and a plurality of wedge portions 75 formed on the long side is formed on the flexible membrane 77 at a regular interval from the upper end portion 81 near the central portion. A printing portion 79 is formed by non-adhesive printing. The non-adhesive printing portion 79 is provided so as to be located in the middle of the adjacent wedge portions 75. However, the lower end portion 82 is not printed.

Next, using such two flexible films 77, the adhesive surfaces are overlapped with each other so as to be the adhesion surface, and both side ends except the wedge portion 75 are sealed with heat or an adhesive to form a sealing portion 76. After forming, it is arranged inside the cylinder of the cylinder 71. Thereafter, in order to allow the non-adhesive printing portion 79 to face from the upper end portion 81 of the tubular body 71, the tubular body 71 is sealed by heat or an adhesive substantially parallel to the upper side to form a seal portion 83. At this time, the printing portion 79 is not sealed because it is non-adhesive. The two flexible membranes 77 separated by the seal portion 83 serve as a valve body 72, the wedge portion 75 serves as an inner opening, and the non-adhesive printing portion 79 serves as an outer opening.

The valve body 73 is formed as described above, and at the same time, the connection sealing body 70 is completed. That is, the seal portion 83 divides the tubular body 71 into a plurality of small chambers 85, and as a result, the valve body 72 becomes a continuous sealing body 70 integrally formed over the plurality of small chambers 85. Since the continuous sealing body 70 of the present embodiment has the valve body continuously formed as one body, it can be manufactured more easily than the continuous sealing body 50 of the first embodiment of the second invention.

The material of the flexible film 77 and the method of forming the adhesive surface are the same as those of the flexible film 3 and the adhesive surface 5 of the first embodiment of the first invention. The operation and effect of the connecting hermetically sealed body 70 of this embodiment is similar to that of the first embodiment of the second embodiment of the second invention. FIG. 12 is a front view showing a third embodiment of the second invention.

The connecting sealing body 90 has the same manufacturing method, operation and effect as the connecting sealing body 70 of the second embodiment of the second invention except that the connected form is an L shape. The concatenated sealing body of the second invention described above mainly has a cushioning function and a heat insulating function when the fluid is fed. This point will be described below.

The buffering action of the connection sealing body of the present invention is obtained by the internal pressure of the fluid sent to the plurality of sealing bodies of the connection sealing body and / or the property of the fluid itself. Utilizing this cushioning effect, cushioning materials for protecting vegetables and fruits, protecting precision equipment, protecting and bundling parts, packing bags and shoes, preventing load collapse, etc., or air pillows. It can be used for cushions such as cushions, pats, fences, etc. Another feature of the concatenated seal of the present invention is that when a flat concatenated seal is previously inserted between the objects, the fluid is sent to inflate the concatenated seal, and A sufficient cushioning effect can be obtained because a part of the connecting and sealing body of the present invention enters in correspondence with the shape of the object even in a portion where a gap is generated and the cushioning effect cannot be obtained.

The adiabatic action of the connected sealing body of the present invention is given to each connected sealing body from the outside because convection of the fluid sent to the connected sealing body occurs only in each sealed body of the connected sealing body. Because the amount of heat is less likely to change. By utilizing this heat insulating effect, it can be used as a heat insulating material for food and drink such as for wine coolers and fresh fish preservation, and a heat insulating material for construction. Especially when heat insulation is applied to a narrow portion (for example, between panels of a building material having a double panel structure), the connecting sealing body of the present invention is first inserted into the narrow portion in a flat state, and then the valve body is inserted. If the fluid is sent through it, the heat insulating material can be formed by a simple operation.

In addition to the above, examples of the use of the concatenated closed body of the present invention include liquid carriers such as water bottles, toys such as balloons, medical casts, closed containers for vacuum packs, hangers, and stoppers. Although the first and second embodiments have been described by using gas as a fluid, the same can be applied to other fluids such as liquids, powders and granular solids. It is possible. Further, it is needless to say that the present invention is not limited to the embodiments described above and can be implemented in various modes without departing from the gist thereof.

[0036]

[Effect of device]

 As described in detail above, according to the valve body of the first invention, it is extremely easy to manufacture, does not impair the function as a check valve even if it is used for a long time, and when used as a sealed body, It is possible to keep the sealed body airtight without depending on the internal pressure.

The connecting hermetically sealed body of the second invention can be adapted to various shapes of objects by changing the connecting direction.

[Brief description of drawings]

FIG. 1 is a front view of a first embodiment of the first invention.

FIG. 2 is a front view of a sealed body to which the valve body of the first embodiment of the first invention is attached.

3A and 3B are a perspective view and a schematic end view showing the function of maintaining airtightness after air is fed to the sealed body to which the valve body of the first embodiment of the first invention is attached, and FIG. And (b) is a schematic end view taken along the line A-A in (a).

4A and 4B are a perspective view and a schematic end view showing the function of maintaining airtightness after air supply to the sealed body to which the valve body of the first embodiment of the first invention is attached, in which (A) stops air supply from the outside. And (b) is a BB schematic end view of (a).

5A and 5B are a perspective view and a schematic end view showing the function of exhausting air from a sealed body to which the valve body of the first embodiment of the first invention is attached, and FIG. 5A is a perspective view when exhausting air from the sealed body. Figure,
(B) is a schematic end view of C-C, and (C) is a schematic end view showing a state in which exhaust has been completed from the sealed body.

FIG. 6 is a front view of a second embodiment of the first invention.

FIG. 7 is a perspective view showing a use state of a valve body of a second embodiment of the first invention attached to a sealing body, (a) is a perspective view showing a valve open state, and (b) is a valve closed state. FIG.

8A and 8B are a front view and a perspective view of a first embodiment of the second invention, wherein FIG. 8A is a front view of the connecting sealing body, and FIG. 8B is a perspective view of the connecting sealing body after air feeding. Is.

FIG. 9 is a view showing an example of use of the connecting hermetically sealed body of the first embodiment of the second invention, wherein (a) is a perspective view showing a state in which air is exhausted from the inflated connecting hermetically sealed body; [Fig. 3] is a perspective view showing a state in which air is being fed to a flat concatenated closed body.

FIG. 10 is a front view of a third embodiment of the first invention.

FIG. 11 is a front view of a second embodiment of the second invention.

FIG. 12 is a front view of a third embodiment of the second invention.

[Explanation of symbols]

 1, 30, 40, 72 ... Valve body, 3, 31, 77 ... Flexible membrane, 5, 33 ... Adhesive surface, 9, 39 ... Internal opening, 11, 35 ... External opening, 20 ... Sealing body, 25, 65 ... Air supply pipe, 27, 61 ... Exhaust pipe, 50, 70, 90 ... Connection sealing body, 51, 71 ... Cylindrical body, 57, 85 ... small room,

Claims (3)

[Scope of utility model registration request] 1. A fluid passage is provided between the flexible membranes, and when the fluid enters from the outside or a transfer pipe is inserted, the flexible membrane is separated and opened to stop the entry of the fluid or A valve body in which the flexible film is brought into close contact with the valve to close the valve when the transport pipe is pulled out, and one or both of the contact surfaces of the flexible film have adhesiveness. 2. The valve body comprises a plurality of sealing bodies attached to one end thereof, the plurality of sealing bodies being connected to each other, and the two sealing bodies in a connecting relation are valves attached to one sealing body. A concatenated closed body having a structure in which an external opening of the body communicates with the inside of the other closed body. 3. The connection sealing body according to claim 2, wherein the valve body is continuously and integrally formed over a plurality of sealing bodies.