JP6209027B2 - Cap with slit valve - Google Patents

Description

  The present invention relates to a cap provided with a slit valve having a slit opened by a pressure higher than a predetermined value, and in particular, with a slit valve that does not require a slit valve holder or the like for attaching the slit valve to the opening of the container body. It is about the cap.

As a container for storing cosmetics, face wash, etc., a slit-type valve (hereinafter referred to as a slit valve) is used that can discharge an appropriate amount of the contents and that can be discharged well during the discharge.
The slit valve is usually formed with a cross-shaped cut, and the internal pressure is increased by pressurizing the barrel of the container, and an appropriate amount can be discharged by instantly opening the slit provided in the central area of the valve. It can be done. And even when this slit valve uses a thing with relatively high viscosity such as cream, or when using a relatively low viscosity such as oil-based cosmetics or vegetable oil, the contents are discharged. Caps with various slit valves are well known in that they are good at cutting off.

  For example, Japanese Patent No. 4145523 (Patent Document 1) discloses a structure including such a slit valve. The slit valve structure disclosed in this publication has a slit valve having a slit opened by a pressure higher than a predetermined value, and an opening for introducing and holding the slit valve. In the slit valve structure comprising a slit valve holding member for mounting, the slit valve has a straight inner wall, the slit valve holding member surrounds the slit of the slit valve over the entire circumference, It is characterized by having a scattering prevention wall that prevents scattering of the contents discharged from the slit.

Japanese Patent No. 4145523 (Japanese Patent Laid-Open No. 2003-182750)

  By the way, in the slit valve structure disclosed in Patent Document 1, the cap body has an opening for introducing the slit valve in the vicinity of the center thereof, and the slit valve is held in this opening by a method such as concave-convex fitting. A slit valve holding member is formed. The slit valve is introduced into the opening from the back side (container mouth side) of the cap body, and is regulated by the slit valve holding member so that the slit surface is substantially aligned with the protective surface of the cap body. It is fixedly held with respect to the slit valve holding member from the back side (container opening side) of the main body by a valve pressing (separate parts from the cap main body and the slit valve). As described above, the slit valve structure is constituted by three parts, that is, a cap body provided with a slit valve holding member, a slit valve, and a valve presser.

However, in the slit valve structure disclosed in Patent Document 1, it is necessary to separately manufacture and assemble three relatively small parts as described above. For this reason, the manufacturing man-hour of this slit valve structure may become large, or manufacturing cost may become high.
In view of such problems, the present invention is a cap with a slit valve that can be easily drained when the contents are discharged, and can prevent an increase in the number of manufacturing steps or an increase in manufacturing cost. An object is to provide a cap with a valve.

In order to achieve the above-described object, the present invention takes the following technical means.
In other words, the cap with a slit valve according to the present invention is a cap with a slit valve that discharges the contents in the container, and is provided in the opening of the cap body and the opening side of the cap body, and is opened by an increase in the container internal pressure. It consists of two parts, a slit valve having a slit. The opening has a substantially hollow cylindrical shape having a predetermined length and a predetermined thickness, and is a first end surface on the cylindrical container side and an open side that is the opposite side of the first end surface. A second end face. The opening includes a first rib including a notch portion in which the thickness of the inner diameter side of the cylindrical shape is notched so that the first end surface remains larger than the second end surface. The second end face is left larger than the end face of the cylindrical portion, and the second rib having a cutout portion in which the thickness on the inner diameter side of the cylindrical shape is notched is divided into the cylindrical circumference. Each has two or more. The slit valve includes a first engagement portion having a shape that engages with a notch portion of the first rib, and a second engagement having a shape that engages with a notch portion of the second rib. The slit valve by engaging the first rib and the first engaging portion, and engaging the second rib and the second engaging portion. Is sandwiched between the cap bodies.

Preferably, the first rib and the second rib are arranged so as to be symmetrical with each other, and the first engagement portion and the second engagement portion are arranged so as to be symmetrical with each other. Can be configured.
More preferably, the cap body and the slit valve can be configured to be manufactured by insert molding or two-color molding.

  ADVANTAGE OF THE INVENTION According to this invention, when manufacturing the cap with a slit valve with sufficient liquid cutting | discharging at the time of discharge of a content, it can suppress that a manufacturing man-hour increases or manufacturing cost becomes high.

BRIEF DESCRIPTION OF THE DRAWINGS It is an external view of the cap with a slit valve which concerns on embodiment of this invention, Comprising: (A) is a top view which shows a cover body sealing state, (B) is a side view which shows a cover body sealing state, (C) FIG. 3 is a side view showing a lid open state. It is 2-2 sectional drawing of FIG. 1 (A). It is an upper surface (open side) detailed drawing of the opening part of the cap with a slit valve of FIG. FIG. 4 is a sectional view taken along line 4-4 of FIG. 3. FIG. 5 is a sectional view taken along line 5-5 in FIG. 3. It is a lower surface (container side) detailed drawing of the opening part of the cap with a slit valve of FIG.

Hereinafter, the cap 100 with a slit valve which concerns on embodiment of this invention is demonstrated in detail based on drawing. In the following description, the same parts (portions) are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof may not be repeated.
The structure of the cap 100 with a slit valve according to the present embodiment will be described. In FIG. 1, the external view of this cap 100 with a slit valve is shown. 1A is a top view showing a state in which the lid 110 is sealed, and FIG. 1B is a side view showing a state in which the lid 110 is sealed, and FIG. ) Is a side view showing a state in which the lid 110 is opened. FIG. 2 is a cross-sectional view taken along the line 2-2 in FIG.

  As shown in these drawings, the cap 100 with a slit valve is attached to the mouth of a container body whose contents are cosmetics or the like. A container body (not shown) is a squeeze bottle made of a synthetic resin that has a mouth portion and a body portion and can pressurize the body portion. The squeeze bottle includes, for example, cosmetics and the like, and a cap 100 with a slit valve is attached by a spiral portion provided at the mouth of the squeeze bottle and a spiral portion 122 of the cap 100 with the slit valve. A slit valve 300 is attached to the cap 100 with the slit valve.

As described above, the cap 100 with the slit valve is a cap including the slit valve 300 for discharging the contents in the container body, and is provided in the cap body 120 and the opening 200 on the open side of the cap body 120. It consists of two parts, a slit valve 300 having a slit 330 that is opened when the internal pressure of the container increases. The lid body 110 and the cap body 120 are formed integrally with each other via a hinge part 130. The lid 110 is detachably held by the cap main body 120 by the hinge part 130 so that the slit valve 300 can be covered in a sealed state. When the lid 110 is sealed, the outer wall of the substantially hollow cylindrical portion that forms the opening 200 on the open side of the cap body 120 (more specifically, the first rib 210 and the second rib 220 described later are formed). And the fitting portion 114 of the lid 110 is fixed and held. The lid 110 is provided with a hooking portion 112 for facilitating the opening and closing operation. For example, the user opens the sealed lid 110 by pushing up the hooking portion 112 with a fingertip. Transition to the state.

  The present invention does not include such a lid 110, and the lid may be a separate body from the slit valve cap 100. Such a cap 100 with a slit valve that does not include the lid 110 is obviously composed of two parts, that is, a cap body 120 and a slit valve 300. Since the body 110 is hingedly connected to the cap body 120 and can be considered as an accessory of the cap body 120, the cap body 120 and the slit valve 300 have two parts, even the cap 100 with the slit valve provided with the lid 110. It will consist of

The cap body 120 includes a substantially hollow cylindrical opening 200, and the slit valve 300 is sandwiched by the opening 200, so that the slit valve 300 is attached to the cap body 120. Details of the features of this mounting structure will be described later.
The slit valve 300 is made of, for example, silicon rubber or elastic synthetic resin, and is made of a resin different from the cap main body 120, and has a slit surface S on which a cross-shaped slit (cut) 330 is formed. For this reason, when the internal pressure of the squeeze bottle is equal to the atmospheric pressure, the slit valve 300 maintains the slit 330 in a closed state by its elastic force. On the other hand, when the internal pressure of the squeeze bottle becomes higher than the atmospheric pressure, the slit valve 300 is elastic. When the inner pressure of the squeeze bottle is lower than the atmospheric pressure against the force, the slit 330 is opened inward against the elastic force.

  That is, when the slit valve 300 pushes the body of the squeeze bottle, as the internal pressure of the squeeze bottle increases, the slit 330 opens outward to discharge a predetermined amount of content, and then closes the slit 330 to close the content. Stop discharging. At this time, when the mouth part of the squeeze bottle is faced upward to weaken the pushing force of the body part and the internal pressure of the squeeze bottle decreases below the atmospheric pressure, the slit 330 is opened inward to introduce air into the squeeze bottle.

As described above, the cap 100 with the slit valve is characterized by the structure in which the slit valve 300 is attached to the cap body 120. This feature will be described in detail.
3 is a detailed view of the upper surface (open side) of the opening on the opening side of the cap 100 with a slit valve, FIG. 4 is a sectional view taken along line 4-4 in FIG. 3, FIG. 5 is a sectional view taken along line 5-5 in FIG. FIG. 6 shows detailed views of the lower surface (container side) of the opening on the opening side of the cap 100 with a slit valve.

  As described above, the cap 100 with the slit valve is provided in the cap main body 120 (which may or may not include the lid 110) and the opening 200 on the open side of the cap main body 120. It consists of two parts, a slit valve 300 having a slit 330 that is opened by the ascent of the valve. Here, the slit surface S of the slit valve 300 has a shape that is recessed inward toward the inside of the container main body by the curved portion 340.

As shown in FIGS. 3 to 6, the opening 200 on the open side of the cap body 120 has a substantially hollow cylindrical shape having a predetermined length and a predetermined thickness. The opening 200 having a cylindrical shape includes a first end surface 211 on the container side and a second end surface 212 on the open side that is the opposite side of the first end surface 211.
More specifically, as shown in FIGS. 3 and 4, the opening 200 has the first end surface 211W larger than the second end surface 212N, and the wall thickness on the inner diameter side of the cylindrical shape is notched. As shown in FIGS. 5 and 6, the first rib 210 having a notch and the second end face 212W remain larger than the first end face 211N, and the wall thickness on the inner diameter side of the cylindrical shape is cut. Two second ribs 220 each having a notched portion are provided so as to divide the circumference of the cylindrical shape. Here, a container-side first end surface 211 is formed by the wider first end surface 211W and the narrower first end surface 211N, and the wider second end surface 212W and the narrower second end surface. The second end surface 212 on the open side is formed by 212N, and the area of the first end surface 211 and the area of the second end surface 212 are substantially equal.

On the other hand, the slit valve 300 is provided with a first shape that engages with the notch of the first rib 210 so as to match the notch of the first rib 210 and the notch of the second rib 220. The engaging portion 310 and the second engaging portion 320 having a shape that engages with the notched portion of the second rib 220.
And this cap 100 with a slit valve | bulb is by the 1st rib 210 and the 2nd rib 220 with which the opening part 200 is provided, and the 1st engaging part 310 and the 2nd engaging part 320 with which the slit valve 300 is provided, The slit valve 300 is characterized by an attachment structure in which the cap body 120 is sandwiched. Specifically, when the first rib 210 and the first engaging portion 310 are engaged, and the second rib 210 and the second engaging portion 320 are engaged, the slit valve 300 is capped. It is clamped by the main body 120. As described above, the slit valve 300 is sandwiched between the cap main body 120 and the first engagement portion 310 is engaged with the first rib 210 to prevent the slit valve 300 from coming out to the container side. By engaging the second engagement portion 320 with the rib 220, the slit valve 300 is prevented from coming off to the open side.

  Further, the opening portion 200 and the slit valve 300 include a cross section of a portion where the first rib 210 shown in FIG. 4 is present (this portion is also a portion where the first engaging portion 310 is present), and a second portion shown in FIG. Each shape is determined so that the cross section of the portion where the rib 220 is present (this portion is also the portion where the second engaging portion 320 is present) has a similar cross section. However, the present invention is not limited to the cap with the slit valve having the same cross section as described above, and the airtightness is maintained in the portion other than the slit 330 of the slit valve 300 (the contents of the container from other than the slit 330). It doesn't matter if it doesn't leak.

  In the cap 100 with a slit valve according to the present embodiment, two first ribs 210 and two second ribs 220 are arranged so as to be symmetrical with respect to the cylindrical shape of the opening 200, respectively. Two engaging portions 310 and two second engaging portions 320 are arranged so as to be symmetrical with respect to the cylindrical shape of the opening 200. However, the present invention is not limited to being arranged symmetrically or arranged two by two as long as the airtightness is maintained at a portion other than the slit 330 of the slit valve 300. Of course, two or more of them may be arranged asymmetrically.

  Moreover, in the cap 100 with a slit valve according to the present embodiment, as shown in FIGS. 3 and 6, the first rib 210 and the second rib 220 included in the opening 200 are cylinders of the opening 200. The circumference of the shape is divided so as to be staggered along the circumference so that the first engagement portion 310 and the second engagement portion 320 included in the slit valve 300 are staggered in the same manner. Is provided. As a result, the engagement state formed by the first rib 210 and the first engagement portion 310 along the cylindrical central axis direction of the opening 200 (the vertical direction in FIG. 4 and FIG. 5) ( Since the engagement state (adhesion state to be described later) formed by the second rib 220 and the second engagement portion 320 has a staggered structure along the circumference, the slit is formed. An attachment structure in which airtightness is maintained in a portion other than the slit 330 of the valve 300 can be realized.

About such an attachment structure, mass production is realizable by manufacturing the cap main body 120 and the slit valve 300 industrially using well-known insert molding or well-known 2 color molding. When such injection molding is used, particularly when two-color molding is used, the engaged first rib 210 and the first engaging portion 310 are thermally fused and bonded together. The second rib 210 and the second engagement portion 320 are heat-sealed and bonded, so that the opening 200 of the cap body 120 and the slit valve 300 are integrated. When insert molding is used, the slit valve 300 has a first engagement portion 310 having a shape that engages with the notch portion of the first rib 210 even if one is not heat-sealed because of low temperature. And the second engaging portion 320 having a shape that engages with the notched portion of the second rib 220, the first engaging portion 310 is provided in the notched portion of the first rib 210. The second engaging portion 320 is joined to the notch portion of the second rib 220 so that the opening portion 200 of the cap body 120 and the slit valve 300 are integrated. Here, being integrated means that the slit valve 300 is attached to the opening 200 so that airtightness can be maintained at a portion other than the slit 330 of the slit valve 300.

  Since such an injection technique is used, the first rib 210 and the first engaging portion 310 are engaged, and the second rib 210 and the second engaging portion 320 are engaged. Even if the slit valve 300 has a complicated mounting structure in which the cap body 120 is sandwiched between the cap body 120 and does not require a valve press as in Patent Document 1, the manufacturing man-hours and the manufacturing cost are increased. It can suppress that it becomes high. Since insert molding and two-color molding are known injection molding techniques, description thereof will not be repeated here, but FIGS. 3 and 4 show the shape of the recess formed when the slit valve 300 is molded. Gate 312 appears. The slit 330 is provided by, for example, cutting the vicinity of the center of the slit valve 300 into a cross shape after the opening 200 of the cap body 120 and the slit valve 300 are integrated. The cutting process for providing the slit 330 may be performed in an injection molding machine.

  As described above, according to the cap with the slit valve according to the present embodiment, the airtightness is maintained in the portion other than the slit of the slit valve with the two parts of the cap body and the slit valve without requiring the valve presser. Can be configured. In this case, since the cap with a slit valve according to the present embodiment is manufactured by insert molding or two-color molding, the manufacturing man-hour is increased in manufacturing a cap with a slit valve that can be easily drained when the contents are discharged. It can suppress that manufacturing cost becomes high.

The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
Here, as described above, the slit surface S of the slit valve is not limited to a shape that is recessed inward toward the inside of the container body, and may be a shape that protrudes outward toward the outside of the container body. . Furthermore, the slit of the slit valve is not limited to the cross shape, and various shapes such as a single character shape can be adopted. Further, the contents are not limited to cosmetics, but may be chemicals, foods (ketchup, mayonnaise, honey), kitchen detergents, body soaps for bathrooms, shampoos, rinses, and the like.

  The present invention can be suitably applied to a cap with a slit valve that discharges the contents in the container. In particular, the liquid can be drained when discharging the contents, and the number of manufacturing steps and the manufacturing cost increase. It can be suitably applied in that it can be suppressed.

DESCRIPTION OF SYMBOLS 100 Cap with slit valve 110 Lid body 120 Cap body 130 Hinge part 200 Opening part (substantially hollow cylindrical shape that forms the opening side opening part of the cap body) 210 First rib 220 Second rib 211, 211N, 211W ( First end face 212, 212N, 212W (on the open side) Second end face (on the open side) 300 Slit valve 310 First engaging portion 320 Second engaging portion 330 Slit 340 Curved portion

Claims (3)

A cap with a slit valve for discharging the contents in the container, comprising two parts: a cap body and a slit valve having a slit that is provided at the opening on the opening side of the cap body and is opened when the container internal pressure increases. Configured,
The opening has a substantially hollow cylindrical shape having a predetermined length and a predetermined thickness, and is a first end surface on the cylindrical container side and an open side that is the opposite side of the first end surface. A second end face of
The opening includes a first rib having a notch portion in which a thickness on the inner diameter side of the cylindrical shape is notched, leaving the first end surface larger than the second end surface . A second rib having a notch portion formed on the end face and leaving the second end face larger than the first end face and having a thickness on the inner diameter side of the cylindrical shape notched . formed on the end face of 2, said first rib and said second rib is provided on each of four along the circumference of the cylindrical shape,
The slit valve includes a first engagement portion having a shape that engages with a notch portion of the first rib, and a second engagement having a shape that engages with a notch portion of the second rib. With
When the first rib and the first engaging portion are engaged, and the second rib and the second engaging portion are engaged, the slit valve is attached to the cap body. Pinched ,
The first rib and the second rib are provided so as to alternate along the circumference, and the first engagement portion and the second engagement portion are provided along the circumference. Provided to be staggered,
A cap with a slit valve, which does not include a member for clamping the slit valve to the cap body .   The first rib and the second rib are arranged so as to be symmetrical with each other, and the first engagement portion and the second engagement portion are arranged so as to be symmetrical with each other. Item 2. A cap with a slit valve according to item 1.   The cap with a slit valve according to claim 1 or 2, wherein the cap body and the slit valve are manufactured by insert molding or two-color molding.

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