JPS601220B2 - Closing means - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an opening means and, more particularly, to a closing means which has excellent airtightness and is easy to open and close.

Hitherto, various types of fasteners have been proposed and put into practice as closure means, such as zip fasteners and hook-and-loop fasteners known as Velcro fasteners (product name). Therefore, it was not suitable for keeping the opening of a bag containing powder and granular material airtightly closed to prevent moisture from entering from the outside.

In addition, waterproof zippers with special structures have been proposed,
It has a complicated structure and is expensive to manufacture, making it unsuitable for general and widespread use. Therefore, the inventor made repeated improvements in order to obtain a closing means that has a simple structure, is easy to handle, and has excellent airtightness.As a result, the inventors have developed a method using elastomer-based synthetic resins, such as PVC and other synthetic rubbers. A pair of band-shaped parts are formed from a material with high flexibility and elasticity, and a protrusion with a substantially umbrella-shaped cross section is provided along the longitudinal direction of the inner side of one of the band-shaped members, and a projection part having a substantially umbrella-shaped cross section is provided on the inside of one of the band-shaped members. An iron fitting groove portion having a substantially semicircular cross section and protruding inwardly from each other in the closing portion extends along the longitudinal direction of the inner side of the opening portion, and corresponds to the umbrella-shaped projection portion, By configuring the contact surfaces on both sides of the pair of belt-shaped elastic members forming the joint groove part to be connected flat so that the umbrella-shaped protrusion part and the competition groove part are tightly fitted together, both members can be joined together. When the umbrella-shaped protrusions are force-fitted into the matching groove while facing each other, the protrusions return to their original shape within the competing groove and come into close contact with each other to maintain sufficient airtightness. Furthermore, notch grooves are provided adjacent to the protruding portions and the iron fitting groove portions of the band member, and by positioning and fixing the opening □ twill portions of the bag body in these notch grooves, the “bag body” is fixed. It has been found that it is possible to obtain a closing means that can sufficiently maintain airtightness even when internal pressure increases.

Therefore, it is an object of the present invention to provide a belt-like member with a protrusion and a fitting groove that closely engage each other along the longitudinal direction of the inner side of the band-like member, and to position the belt-like member at the opening □ twill portion of the T-bag body to facilitate easy handling. It is an object of the present invention to provide a closing means that can be opened and closed reliably and can maintain its airtightness sufficiently even when the internal pressure inside the bag increases.

In order to achieve the above object, the present invention consists of a pair of band-shaped elastic members, and a protrusion with a substantially umbrella-shaped cross section is provided along the longitudinal direction of the inside of one of the elastic members. An iron matching groove part having a substantially semicircular cross-sectional shape and having a lip that projects inwardly from each other is extended at the entrance part along the longitudinal direction of the inner side of the part, thereby forming the protrusion part and the saddle matching groove part. The supporting surfaces on both sides of the pair of band-shaped elastic members are configured to be flat so as to be in close contact with each other, and further, notch grooves are provided adjacent to the portions of the pair of band-shaped members in which the protrusions and the competition grooves are formed. The opening □ twill portion of the bag body is positioned and fixed in the notch groove.

In the above-mentioned self-closing means, airtightness can be achieved by extending tongue pieces whose inner surfaces supporting each other are inclined inward from the inner surfaces of the elastic members along the longitudinal direction of the upper twill of each band-shaped elastic member. can further improve the retention function.

In addition, if the closing means includes an expanding section that projects outward on the outer side of the pair of band-like elastic members and extends in the longitudinal direction, when releasing the band-like elastic members in the mated state,
It is possible to press outward by hooking a finger or the like on the protrusion, and the closing means can be released easily and quickly.

Furthermore, when attaching the pair of band-shaped elastic members to the entrance edge of the bag body, the seal opening twill portion of the bag body is positioned and fixed in the notch groove provided adjacent to the protrusion of the band-shaped elastic member and the fitting groove. This can prevent the closing means from opening due to the internal pressure of the bag.

Other objects and advantages of the present invention will become more apparent from the following description.

Next, an embodiment of the opening means according to the present invention will be described in detail below, illustrating a case in which the closing means according to the present invention is applied to a entrance of a passageway for transporting bags for powder and granular materials.

In FIG. 1, reference numeral 10' indicates a transportation bag filled with powder, granules, etc., and the bag body 10' is waterproof and tough, such as synthetic rubber, vinyl chloride tarpaulin, etc. It is constructed in a substantially rectangular tube shape using a movable sheet member such as polypropylene cloth or waterproof canvas.

In this case, the movable sheet that makes up the bag body is in direct contact with the filling, so it has oil resistance, chemical resistance, or food hygiene properties depending on the filling contained in the bag body. It is necessary that the bag conforms to standards, etc.Also, although the illustrated example shows a rectangular cylindrical bag, it is of course possible to use a cylindrical bag. A powder filling row 2 and a discharge row 4, each preferably circular, are provided at the bottom of the bag. The input passage 16 and the output passage 18 of the shape are attached by means such as porting or sewing, and the output passage 1
A tying tool 28 made of a tightening cord or the like is attached to a part of 8 so that the discharge □ turtle 4 can be opened and closed as appropriate. In addition, it is preferable to appropriately arrange hanging tools 22 on each outer surface of the bag body iQ to facilitate loading and unloading using a forklift, crane, etc. Although the upper part may have a conical shape with a diameter slightly smaller than that of the base, it is preferably configured as a cylindrical shape with approximately the diameter of a pen. By attaching the closing means 26 according to the present invention, the opening □ part 2
4 is configured to be sealed.

In other words, "the closing means 26 of the present invention comprises two opposing band members 28 made of a material rich in flexibility and elasticity, such as elastomer-based synthetic resin or synthetic rubber, and having both ends connected and fixed in a flexible manner. 28. As shown in FIG. 2, this closing means includes a protrusion 30 having a substantially umbrella-shaped cross section extending along the inner longitudinal direction of one obi part village 28, as shown in FIG. The other band member 28 is configured by extending a matching groove part 36 corresponding to the umbrella-shaped protrusion 30 along its inner longitudinal direction.
are basically composed of a single groove extending in the longitudinal direction and having a substantially semicircular cross-sectional shape, and the grooves protrude inward from each other at the openings 32 of the grooves and are tapered on the inner side. It is provided with rip portions 34, 34. In addition, on the outer side of each of the band members 28, 28, there are bulges 38, 38 that bulge slightly outward along the longitudinal direction for convenience when releasing the closing means by hand, as will be described later. It is preferable to provide In consideration of convenience when attaching the closing means 26 configured in this way to the opening 24 provided in the transport bag input path 16, the protrusion 30 and the iron fitting groove 36 are provided at the lower part of the band members 28, 28. Mounting grooves 40, 40 extending to the center line (indicated by chain line A in FIG. 2) connecting the center parts
After inserting the periphery of the input channel entrance 24 into these mounting grooves 40 and 401, the periphery of the periphery is fixed as shown in the figure using appropriate means such as a high-frequency welder or other heat-sealing method or an adhesive. Make sure to secure only one side. For the convenience of explanation, the reason and effect of cutting the mounting groove 40 extending down to the center line shown in the drawing will be described here. The purpose is to prevent such unexpected situations from occurring. Temporarily, the input port 24 of the transport bag is fixed to the inside of the lower part of the band member,
Moreover, assuming that the mounting groove 40 does not extend, the lower part of each band member will bend outward when the internal pressure in the bag increases, and the protrusion will tend to separate from the gill-matching groove. arise. However, if the mounting groove 40 is cut as described above,
Even if the lower part of the band member bends outward due to the increase in the internal pressure of the bag body, this external force is dispersed in the horizontal direction and no peeling force is applied to the protrusion and the joint groove, but rather it is converted into horizontal tensile force. , the situation in which the closing means 26 opens easily is prevented. Next, the mode of use of the thus constructed transporter will be explained. When using, first tighten the discharge passage 18 with the tightening tool 2.
0 continuously to block the discharge row 4 and this scarlet exit route 1
8 is appropriately folded, wrapped in a cover piece 44, and further secured with a locking tool 46 to secure the bag body 1.
Perform 0-bottom occlusion.

Next, the bag body 10 is held suspended by means such as a belt via the hanging tool 22, and the opening means of the input channel 16 is opened to fill the bag body 10 with powder, granules, etc., and then the closing means 26
The obi sections 28, 28 constituting the projecting section are pressed sequentially along the longitudinal direction, and the umbrella-shaped protrusion 30 is inserted into the straw mating groove section 36 through the opening □ section 32, and the steps of the protruding section 30 are The opening 24 is sealed by elastically and tightly engaging the lip portions 34, 34 of the groove portion 36. In addition, when opening the input channel 16, the bulges 38, 38 formed on the band members 28, 28 are pulled outward by a machine or by hand, respectively, so that the protrusion 30 and the iron fitting groove 36 fit together. All you have to do is cancel the condition. According to the transport bag using the closing means according to the present invention configured as described above, not only can the input path be kept sealed with a simple configuration, but also the opening and closing operations of the input path can be easily performed. Material filling work can be automated.

FIG. 3 shows that along the longitudinal direction of the upper twill length of the band members 28, 28 constituting the closing means 26, the side surfaces of the band members 28, 28 are
Inwardly inclined tongue pieces 48, 48 are extended from above the extension line (indicated by the chain line B) of the inner surface of Tongue piece 48,
This is an embodiment (see FIG. 4) in which the side surfaces of 48 are in close contact with each other.

In this case, since the area of close contact between the band members increases, the sealed state of the opening 24 can be maintained even more reliably, and rainwater etc. can be prevented from entering the bag body during transportation, which is preferable. It is. Furthermore, FIG. 5 shows the opening means 2
The tips of tongue pieces 48, 48 extending along the longitudinal direction of the upper edges of band members 28, 28 constituting 9 and the bulging portions 38, 38
The tops of the band members 28, 28 are provided with notches 50, 50 extending at the center of the protrusion 30 and the competition groove 36 at the lower part of the band members 28, 28, and the notches 50, 501 are set at approximately the same height as the tops of the band members 28, 28. This is an example in which the closing 24 twill portions are fixed.

In this case, it is possible not only to prevent rainwater etc. from entering the bag body during transportation, but also to facilitate the manufacture and installation of the closing means, which is preferable. As mentioned earlier, the closing means according to the present invention not only has a simple structure and excellent airtightness, but also has easy handling and operation, making it possible to automate opening and closing operations. It has various advantages such as:

As described above, as a preferred embodiment of the opening means according to the present invention, a transport body using the opening means of the present invention at the entrance of a material input path has been described as an example, but the present invention is limited to this embodiment. Of course, various design changes may be made without departing from the spirit of the present invention.

[Brief explanation of drawings]

Fig. 2 is a perspective view of a transport bag in which the opening means according to the present invention is used in the opening of the material input path; Main part cross-sectional explanatory diagram showing the state - Figure 3 is a diamond cross-sectional explanatory diagram showing another embodiment of the closing means provided in the material input opening □ part of the transport bag. Main part sectional view “5th” showing the sealed state of the construction means
The figure is an explanatory cross-sectional diagram of a rhombus part showing yet another embodiment of the closing means provided in the material input opening □ of the transport bag. Dragon rudder - transport bag 12...filling port, military 4...discharge port, military 6
... Input path, turtle 8... Discharge path, 28... Tightening tool 22... Hanging tool,
24... Open □ part " 26... Closing means, 2... Band member To 3... Protrusion part " 32... Open □ part, 34... Lip part " 36... Integral groove part, 38... Swelling part , 48...Mounting groove, umbrella turtle...cover piece, umbrella 6...locking tool, 48...tongue cutout. F!G. with F!G.2 FIG.3 FIG.mu FIG.5

Claims (1)

[Scope of Claims] 1. Consisting of a pair of band-shaped elastic members, a protrusion having a substantially umbrella-shaped cross section extends along the inner longitudinal direction of one elastic member, and a protrusion having a substantially umbrella-shaped cross section extends along the inner longitudinal direction of the other elastic member. A fitting groove portion having a substantially semicircular cross-sectional shape and a lip whose openings protrude inwardly from each other extends along the projection portion, and a pair of band-shaped elastic members forming the projection portion and the fitting groove portion are brought into contact on both sides. The surfaces of the pair of band-shaped elastic members are configured to be flat so that they are in close contact with each other, and notch grooves are provided adjacent to the portions where the projections and the fitting portions of the pair of band-shaped elastic members are formed, and the bag body is inserted into these notch grooves. A closing means characterized by positioning and fixing an opening. 2 Consisting of a pair of band-shaped elastic members, one of the elastic members has a protrusion with a substantially umbrella-shaped cross-section extending along the inner longitudinal direction, and the other elastic member has a protrusion with a cross-sectional shape extending along the inner longitudinal direction. A fitting groove portion having a substantially semicircular shape and having lips projecting inwardly from each other is provided in the opening, and the contact surfaces on both sides of the pair of band-shaped elastic members forming the projection portion and the fitting groove portion are brought into close contact with each other. A notched groove is provided adjacent to the portion where the protruding portion and the fitting groove portion of the pair of band-shaped elastic members are formed, and the opening edge of the bag body is positioned in these notched grooves. A closure characterized in that the inner surfaces of the band-shaped elastic members that are fixed to each other and that come into contact with each other along the longitudinal direction of the upper edge of each elastic member extend inwardly from the inner surfaces of the respective elastic members. means.