JPH0632343U - Valve structure - Google Patents

Abstract

(57) [Summary] [Structure] Synthetic resin injection molded product 2 consisting of valve seat part 2 made of synthetic resin injection molded product and valve body part 3 made of soft synthetic resin injection molded product that is easily elastically deformable. A valve structure that is a fitting assembly of parts. Here, the valve seat component 2 has a through hole 2a, a protrusion 2b provided on the peripheral wall, and a circumferential rib 2d provided on the flange upper wall, and the valve body component 3 has a shield wall 3a. The valve seat component 2 has an inward protrusion 3b having an inner diameter slightly smaller than the diameter of the protrusion 2b of the peripheral wall and a fluid discharge port 3c provided at the upper end, both of which are easily deformable. Of the valve body part 3 so that the lower wall surface of the shielding wall part 3a of the valve body part 3 elastically shields the through hole 2a of the valve seat part 2. The projection 2b of the component 2 is fitted over the projection 2b. [Effect] It can be prepared separately if desired,
It is easy to assemble and inexpensive. Of course, the valve mechanism is also fully exerted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a valve structure suitable for use in a valve mechanism portion of a container for discharging fluid such as paint, glue, makeup foundation cream, mayonnaise, oil and toothpaste.

[0002]

[Prior art]

 There are various fluid discharge containers having a valve mechanism, such as a valve-type writing instrument having a valve mechanism as an ink tank opening / closing part and a pressure type spray container containing a hair styling material. In addition, there are those in which the valve mechanism is arranged at the discharge tip, and those in which the valve mechanism is arranged in the middle of the fluid discharge passage reaching the discharge tip. In such a structure, what is considered to be a typical structure of the valve mechanism is a valve seat component, a valve body component that serves as a shield for the fluid discharge passage to the valve seat component, and the valve body component. It is composed of three parts, which are elastic members that are biased in the direction of abutting against the seat parts. Among these, there is also one in which a valve body component generally called a ball valve is composed of a spherical body.

[0003]

[Problems to be solved by the device]

 Other parts are needed to determine the mutual positional relationship between the valve seat part and the valve body part, and the assembly as the valve mechanism part is troublesome, or it can be prepared separately before the container is assembled. Even if it is a body, there are many parts and it is expensive, and further, the valve mechanism cannot be reliably exhibited. There is. In view of such circumstances, the present invention aims to provide one that can be separately prepared as a valve structure, is easy to assemble, is inexpensive, and can sufficiently exhibit the valve mechanism.

[0004]

[Means for Solving the Problems]

 The present invention relates to a valve seat component made of a synthetic resin injection-molded product having a through hole and a protrusion on the peripheral wall, a shield wall portion for the through hole of the valve seat component, and a protrusion on the peripheral wall of the valve seat component. A synthetic resin injection molded product consisting of a valve element made of a soft synthetic resin injection molded product that is elastically deformable and has an inward protruding portion that fits over The main point is a three-dimensional valve structure.

[0005]

【Example】

 An example will be described with reference to the attached FIGS. In addition, all expressions in the following regarding up, down, left and right are based on the orientation of the drawing.

The one shown in the drawing is an example of the one in which the valve structure is arranged at the discharge tip of the fluid discharge container, and the valve seat part 2, the valve body part 3, and the mouth part are provided at the mouth of the container body 1 for containing the fluid. 3 parts of 4 are attached.

The container body 1 has a press-deformable one such as a blow-molded synthetic resin molded product or a press-molded lead molded product, or has a suitable pressing mechanism part, for example, a piston cylinder part. For example, it is possible to pressurize the contained fluid as desired. The valve seat component 2 is an injection-molded product of a suitable synthetic resin such as polyethylene, polypropylene, nylon, polyacetal, or ABS resin, and is provided on the peripheral wall and the through hole 2a that serves as a fluid discharge portion from the container body 1. It has a ring-shaped or an appropriate number of protrusions 2b, a cylindrical portion 2c protruding upward, and a circumferential rib 2d provided on the upper wall of the collar portion. Like the valve seat component 2, the valve disc component 3 is an injection-molded product made of synthetic resin as appropriate, but is easily elastically deformed by using materials such as polyurethane, silicone rubber, and SBR resin, or by forming it thin. It has a soft inner diameter, and has an inner diameter that is slightly smaller than the diameter of the shield wall portion 3a serving as the central recessed wall portion and the diameter of the protruding portion 2b portion of the peripheral wall of the valve seat component 2, or an annular shape provided near the lower end portion of the inner wall. An appropriate number of inward projections 3b, and although it may be one, a plurality of inward projections 3c are provided at the upper end so as to be circumferentially arranged, and a protrusion 3 provided on the peripheral wall. d and. The mouth part 4 may also be an injection-molded product of a synthetic resin as appropriate, and has a mounting portion 4a for the container body 1 (the one shown in the drawing is screwed, but has an appropriate mounting structure such as bonding or press fitting). May be present), a cap portion 4b having a hinge structure having an opening diameter slightly smaller than the diameter of the protruding portion 3d of the valve body component 3, and a columnar portion 4c provided on the inner upper wall surface of the cap portion 4b and It has a protrusion 4d.

The valve seat part 2 and the valve body part 3 can be prepared as an assembly with each other before the state shown in the drawings as desired, and the valve element part 3 is used to be easily deformed. By fitting the inward projection 3b of the body part 3 over the projection 2b of the valve seat part 2, the two are fitted together. That is, they are integrated by so-called concave and convex fitting or snap fitting. In this fitted state, the valve seat component 2 and the valve body component 3 are subjected to the clamping force by the attachment of the mouth component 4 to the container body 1, and the valve seat component 2 and the valve body component 3 are the portions at the circumferential rib 2 of the valve seat component 2. It is attached to the container body 1 while ensuring the airtightness.

Then, in a natural state in which no pressure is applied by the fluid in the container body 1, the lower wall surface of the shielding wall portion 3 a of the valve body component 3 shields the through hole 2 a of the valve seat component 2, and The upper wall surface of the cylindrical portion 2c of the seat component 2 shields the fluid discharge port 3c of the valve body component 3. That is, in the state of FIG. 1 in which the cap portion 4b of the mouth part 4 is attached to the valve body part 3, in order to further strengthen the leakage of fluid due to unnecessary pressurization when not in use, the valve body part 3 The shielding wall portion 3a of the valve component 4 is provided with a contact force to the through hole 2a of the valve seat component 2 by the columnar portion 4c of the port component 4, and the fluid discharge port 3c of the valve body component 3 is also the valve seat component 2a. The cylindrical portion 2c and the protrusion 4d of the mouth part 4 receive the clamping force. However, even when the cap part 4b of the mouth part 4 is removed from the valve body part 3 in FIG. The shielding property of the fluid discharge in the above has been satisfied. As shown in FIG. 3, this shielding property is released when the valve body component 3 is elastically deformed by fluid pressure during use.

Although an example has been described above, various modifications can be made without departing from the spirit of the invention. This is one example in which appropriate portions of the valve seat component 2 and the valve body component 3 may be appropriately shaped. For example, in the one shown in FIGS. 4 and 5, the through hole 2a of the valve seat component 2 is divided into a plurality of small hole portions 2e on the way, and the shielding wall portion 3a of the valve body member 3 is also substantially conical. It has a trapezoidal protruding wall. Although not shown, the shielding wall portion 3a of the valve body member 3 may shield the through hole 2a of the valve seat member 2 by line contact or surface contact. In addition, when the valve structure of the present invention is arranged in the middle of the fluid discharge passage reaching the discharge tip of the fluid discharge container, the valve structure may be located at a portion reaching the fluid discharge port 3c of the valve body part 3. If there is no need to worry about the fluid being contaminated or dried, the shielding property of the fluid discharge port 3c of the valve body component 3 may be omitted.

[0011]

[Effect of device]

 The valve structure of the present invention comprises a valve seat component made of a synthetic resin injection-molded product having a through hole and a protrusion on a peripheral wall, a shield wall part for the through hole of the valve seat component, and the valve seat component. A synthetic resin injection-molded product 2 comprising a valve body component made of a soft synthetic resin injection-molded product that is elastically deformable and has an inward projection that fits over the projection of the peripheral wall and is fitted. Since it is a fitting assembly of parts, it can be separately prepared as desired, assembly is easy, and the cost is low. Of course, the valve mechanism also works well.

[Brief description of drawings]

FIG. 1 is a sectional view illustrating an embodiment of the present invention.

FIG. 2 is a cross-sectional view of FIG. 1 with the cap portion removed.

FIG. 3 is a sectional view of FIG. 1 in a fluid pressurized state.

FIG. 4 is a sectional view illustrating another embodiment of the present invention.

5 is a cross-sectional view of FIG. 2 in a fluid pressurized state.

[Explanation of symbols]

 1 Container Main Body 2 Valve Seat Part 2a Through Hole 2b Projection Part 2c Cylindrical Part 2d Circular Rib 2e Small Hole Part 3 Valve Body Part 3a Shielding Wall Part 3b Inward Projection Part 3c Fluid Discharge Port 3d Projection Part 4 Mouth Part 4a Mounting Part 4b Cap portion 4c Columnar portion 4d Protrusion

Claims (1)

[Scope of utility model registration request] 1. A valve seat component made of a synthetic resin injection-molded product having a through hole and a protrusion on the peripheral wall, a shield wall portion for the through hole of the valve seat component, and a protrusion on the peripheral wall of the valve seat component. Fitting of two parts of a synthetic resin injection molded product, which is composed of a valve body part made of a soft synthetic resin injection molded product that is elastically deformable and has an inward protruding portion that fits over a portion and is fitted with a fluid discharge port A valve structure that is an assembly.