JP5709459B2 - Film case - Google Patents

Description

  The present invention relates to a film case for storing a film wound around a winding tube.

  For example, a film such as a wrap wound around a cylindrical winding tube is stored in a film case. Usually, a blade is attached to the lid of the film case, and the user cuts the film from the film case with a necessary length and uses the blade of the lid for use.

  There are various types of film cases described above. For example, a film case for cutting a film by closing a lid with a blade has been proposed (see Patent Documents 1 and 2). In this film case, since the film cannot be cut unless the lid is closed, the user's way of cutting the film is naturally the same, and anyone can use it to cut the film appropriately.

  As a film case of the above type, for example, the grip surface of the film is arranged on both sides of the cutting groove where the blade on the lid side enters, and when cutting the film, the film is held by the grip surface and the vertical flanges on both sides of the film, The thing which adds tension is proposed (refer to patent documents 3). Thereby, the film can be cut smoothly.

JP 2004-136966 A JP 2005-88991 A JP 2005-526630 Gazette

  However, in the above-described film case, there is a possibility that sufficient tension is not applied to the film due to the degree of catching on the grip surface of the film. If there is a case where sufficient tension is not applied to the film, the film may be bent at the time of cutting and the cutting may not be performed properly, so that the cutting becomes unstable. Moreover, in the above-mentioned film case, it is conceivable that the film adheres to the vertical flange on the lid side after cutting, or the film is rewound onto the winding cylinder. In this case, it is difficult to draw the film next.

  The present invention has been made in view of the above points, and it is an object of the present invention to reliably ensure the tension of the film at the time of cutting, and to suppress the adhesion of the film to the lid side after the cutting and the rewinding of the film. And

The present invention for achieving the above object is a film case for storing a film wound around a winding cylinder, wherein an opening for pulling out the stored film from the winding cylinder is formed along the longitudinal direction. A case main body, and a lid that rotates around an axis extending in a longitudinal direction of the case main body, and opens and closes the opening. A blade portion that is formed along the longitudinal direction of the lid portion and cuts the film when the opening portion is closed, and a case body that is formed along the longitudinal direction of the lid portion and closes the opening portion. A presser part that holds the film between the cover part and the presser part is disposed on both sides of the blade part in the width direction of the lid part, and the case body part has the opening by the lid part. The blade part and the presser part are inserted when closing the part. Grooves respectively provided, at least one of the pressing portion includes a groove that protrudes to the opening side of the blade portion, the pressing portion which the protrusion is inserted, formed deeper than the groove in which the blade portion is inserted Has been.

  According to the present invention, since the presser portions arranged on both sides of the blade portion of the lid portion are inserted into the groove on the case main body side, the tension of the film at the time of cutting can be reliably ensured, and the film can be cut. It can be stabilized. In addition, since the film enters the groove when cutting, the adhesion between the film and the case main body is improved, so that the film can be prevented from sticking to the lid and the film can be unwound, and the next film can be pulled out. Work can be done properly. Further, since the presser portion outside the blade portion enters the groove, the blade portion is completely hidden from the outside, and the user is prevented from touching the blade portion by mistake during cutting. In addition, both the said press parts may protrude in the said opening part side rather than the said blade part.

  The presser part on the outer side in the width direction of the lid part from the blade part may protrude to the opening part side from the inner presser part. In such a case, the outer portion of the blade portion of the film, that is, the portion closer to the user side of the film is pressed first, and then the inner portion of the film blade portion is pressed, so that the film tension on the blade portion is increased. it can. Therefore, the tension of the film in the blade portion can be ensured regardless of the strength of the pulling-out tension of the film by the user.

  The tip of the blade may be located inside an imaginary line connecting the vertices of the outer presser and the inner presser. In such a case, contact between the blade portion and the user's fingertip can be avoided. It is even better if the inner pressing part protrudes from the tip of the blade part.

  On the inner side of the inner pressing portion of the lid portion, there is provided another pressing portion for pressing the film between the case main body portion and the case main body portion when the opening portion is closed by the lid portion. May be provided with another groove into which the other pressing portion is inserted when the opening is closed by the lid. In such a case, since the film remaining on the winding cylinder side is pressed by cutting, the film can be prevented from rewinding during cutting. Moreover, since the adhesiveness of a film and a case main-body part goes up, adhesion to the cover part side of the film after a cutting | disconnection can be suppressed. This makes it easier to pull out the next film.

  The other groove may be formed with a recess into which the other presser part enters. In such a case, the adhesion between the film and the case main body is further improved, so that the film can be prevented from adhering to the lid side and unwinding of the film, and the next film can be pulled out more easily.

  The pressing portion and the groove into which the pressing portion is inserted may be formed in an arc shape along a circumferential direction around the axis of the lid portion. In such a case, since the groove shape is formed in accordance with the rotation of the presser portion that accompanies opening and closing of the lid, for example, the width of the groove can be minimized to make the case main body compact.

  A protrusion projecting inward may be formed on the inner wall on the outer side of the groove into which the pressing portion on the outer side in the width direction of the lid portion is inserted from the blade portion. In this case, since the film can be pressed between the outer pressing portion and the protruding portion of the inner wall on the outer side of the groove, the film is further away from the blade portion than the inner wall on the inner side of the groove. Pressed. Thereby, sufficient distance can be made between the part which presses a film, and the part to cut | disconnect, for example, it can suppress that the tension | tensile_strength is applied to a part of film, and a malfunction arises in a cutting | disconnection. In addition, since the portion where the film is pressed becomes closer to the film outlet side, it becomes easier to take out the cut film.

  A protrusion projecting outward may be formed on the inner wall of the groove into which the pressing portion on the inner side in the width direction of the lid portion is inserted from the blade portion. In such a case, the film can be pressed between the inner pressing portion and the protrusion on the inner wall of the groove so that the film can be pressed further away from the blade than the inner wall on the outer side of the groove. It is done. Thereby, sufficient distance can be made between the part which presses a film, and the part to cut | disconnect, for example, it can suppress that the tension | tensile_strength is applied to a part of film, and a malfunction arises in a cutting | disconnection.

  The upper end surface of the inner wall on the outer side of the groove into which the pressing portion on the outer side in the width direction of the lid portion from the blade part is inserted may be lower than the upper end surface of the inner wall on the inner side of the groove. In this case, it becomes easy to take out the cut film.

  From the film operation side end of the case main body, a pressing piece for the winding cylinder that covers 10% to 60% of the opening is formed, and the pressing piece is in the longitudinal direction provided at the film operation side end. It may be formed to be rotatable around an extending axis. In such a case, the film drawing operation is smooth. Further, even when the leading end of the film is rewound into the case main body due to unforeseen circumstances, sticking to the winding tube is suppressed, so that the return operation becomes easy.

  According to the present invention, since the tension of the film at the time of cutting can be reliably ensured, the cutting of the film can be stabilized. Moreover, since the adhesion to the cover part side of the film after cutting and the film rewinding can be suppressed, the next film drawing operation can be appropriately performed.

It is a perspective view of the film case concerning this Embodiment. It is explanatory drawing at the time of accommodating a film in a film case. It is sectional drawing of a film case. It is sectional drawing of the film case which shows the state which pressed the film with the outer pressing part. It is sectional drawing of the film case which shows the state which the blade part contacted the film. It is sectional drawing of the film case which shows the state which the cover part closed. It is a longitudinal cross-sectional view of the film case which shows the state which the cover part opened. It is a longitudinal cross-sectional view of the film case which provided an example of the holding piece of a winding cylinder. It is a longitudinal cross-sectional view of a film case in case the front-end | tip of a blade part protrudes rather than an inner pressing part.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view schematically showing the configuration of a film case 1 according to the present embodiment.

  The film case 1 has, for example, a case body 10 and a lid 11 as shown in FIG. The case main body 10 is formed in a substantially cylindrical shape, and can accommodate therein a wrap R as a film wound around a cylindrical winding tube A as shown in FIG. The wrap R is a polyethylene film, for example. The wrap R may be a film made of vinylidene chloride or a film made of other materials. An opening 20 for pulling out the wrap R from the winding tube A is formed on the upper surface of the case body 10. The opening 20 is formed across both ends of the case body 10 in the longitudinal direction (X direction in FIG. 2). Further, as shown in FIG. 3, the opening 20 is, for example, about 35 to 40 degrees in one circumferential direction (clockwise direction in FIG. 3) from the uppermost portion of the case body 10 and the other direction (counterclockwise in FIG. 3). For example, it is formed in a range of about 20 to 25 ° in the (circumferential direction).

  As shown in FIG. 2, the case main body 10 is provided with detachable lids 21 for film replacement on both end faces in the longitudinal direction. A conical portion 21 a is formed at the center of the lid 21 so as to protrude toward the center in the longitudinal direction of the case main body 10. The conical portion 21a is inserted into the center hole of the winding cylinder A in the case main body 10, and can position the winding cylinder A while holding the winding cylinder A rotatably. Further, a flat portion is formed on the outer surface of the lid 21 so as not to have a protruding portion or a curved surface portion. Thereby, the case main body 10 to which the lid 21 is attached can be placed vertically on the table. A foot B is attached to the lower part of the case body 10, and a groove part into which the foot B can be inserted is provided in the lower part of the lid 21.

  The lid portion 11 is formed in a plate shape so as to cover the opening portion 20, and is freely rotatable at an end portion on the back side (left side in FIG. 3) facing the opening portion 20 of the case main body portion 10 as shown in FIG. 3. It is connected to the. The lid 11 can open and close the opening 20 by rotating around the longitudinal axis 22.

  The inner surface of the lid portion 11 on the opening portion 20 side is between the blade portion 30 that cuts the wrap R when the lid portion 11 closes the opening portion 20 and the case main body portion 10 when the opening portion 20 is closed. The presser portions 31 and 32 for pressing the lap R are provided. The blade part 30 and the presser parts 31 and 32 are arranged on the outer side (front side) of the lid part 11 in the width direction (Y direction in FIG. 3). The holding parts 31 and 32 are arranged on both sides of the blade part 30 in the width direction of the lid part 11. The blade portion 30 and the presser portions 31 and 32 are formed in parallel over both end portions in the longitudinal direction of the lid portion 11.

  The blade part 30 protrudes from the inner surface of the lid part 11 to the opening part 20 side, and can cut the wrap R at its tip. The presser portions 31 and 32 protrude in a plate shape from the inner surface of the lid portion 11 to the opening 20 side. The presser portions 31 and 32 are formed to be curved in an arc shape along the circumferential direction of rotation of the lid portion 11, for example.

  The presser portions 31 and 32 protrude longer than the blade portion 30 toward the opening 20. Further, the outer pressing portion 31 protrudes toward the opening 20 longer than the inner (back side) pressing portion 32. Therefore, when the lid portion 11 is closed, the outer presser portion 31 first comes into contact with the lap R drawn substantially horizontally, then the inner presser portion 32 comes into contact, and finally the blade portion 30 comes into contact.

  Another presser portion 33 is formed on the inner side (rear side) of the presser portion 32 inside the lid portion 11. The other presser portions 33 are formed over both ends in the longitudinal direction of the lid portion 11 like the presser portions 31 and 32, and protrude in a plate shape on the opening 20 side. The other presser part 33 is formed shorter than the inner presser part 32, for example. Note that the other pressing portion 33 may be formed to be curved in an arc shape along the circumferential direction of the rotation of the lid portion 11 similarly to the pressing portions 31 and 32.

  The portion of the case body 10 that faces the blade portion 30, the pressing portions 31, 32, and the other pressing portion 33 of the lid portion 11 is formed thicker than the other portions. The thick portion 40 is formed by making the outer surface 10b on the front side perpendicular to the cylindrical inner surface 10a that matches the shape of the winding cylinder A, for example. Further, the upper surface of the thick portion 40 is formed approximately horizontally.

  Grooves 50, 51, 52, 53 into which blade part 30, presser parts 31, 32 and other presser parts 33 are inserted are formed in thick part 40 when opening 20 is closed. Each groove 50-53 is formed to such a depth that the blade part 30, the pressing parts 31, 32, and the other pressing part 33 are completely inserted and the lid part 11 is closed. For example, the grooves 51 and 52 are formed in an arc shape in accordance with the shape of the presser portions 31 and 32.

  As shown in FIG. 4, a protrusion 51 b that protrudes inward is formed on the upper portion of the inner wall 51 a outside the groove 51. When the lid portion 11 is closed, the presser portion 31 is pressed against the protrusion 51a. Further, in the groove 51, the upper end surface of the outer inner wall 51a is lower than the upper end surface of the inner inner wall 51c.

  On the inner wall 52a on the inner side of the groove 52, a protruding portion 52b protruding outward is formed. When the lid portion 11 is closed, the presser portion 32 is pressed against the protrusion 52a.

  In addition, a recess 53a is formed at the bottom of the groove 53 (other groove) in which the tip of the other presser part 33 enters when the lid part 11 is closed.

  In addition, as shown in FIG. 8, the case main body portion 10 is provided with a winding piece presser piece 54 that covers the opening 20 in a range of 10% to 60% from the film operation side end C. Good. The presser piece 54 is formed to be rotatable around a shaft 54 a extending in the longitudinal direction provided at the film operation unit end C.

  The case main body 10 and the lid 11 other than the blade 30 are formed by, for example, injection molding. The case body 10 and the lid 11 and the presser piece 54 are molded so as to be movable using a generally known method, and in particular, by an extrusion molding method generally known as a “profile extrusion method” of plastic, It is preferable in production that the case body 10, the lid 11, and the presser piece 54 are integrally formed continuously. Plastic, aluminum, or the like is used as the material of the cover body 11 other than the case body 10 and the film replacement cover 21 and blade part 30. For plastics, polypropylene, polyethylene, polystyrene, ABS resin, etc. with good moldability are used. The material of the blade portion 30 is selected including the shape of the blade edge in accordance with the film as appropriate, such as metal such as tinplate, plastic, and paper.

  Next, the effect | action of the film case 1 comprised as mentioned above is demonstrated.

  As shown in FIG. 2, the wrap R wound around the winding cylinder A is accommodated from the end in the longitudinal direction of the case main body 10 with the lid 21 for film replacement removed. When the wrap R is cut off from the winding tube A, the lid 11 of the film case 1 is opened, the wrap R is pulled in the front direction of the film case 1 through the opening 20, and the winding tube A rotates so that the wrap R Is pulled to the desired length. Next, the lid portion 11 is closed, and the wrap R is cut by the blade portion 30.

  When the lid portion 11 is closed at the time of cutting the wrap R, the outer presser portion 31 is first inserted into the groove 51 while contacting the wrap R and pushing the wrap R downward as shown in FIG. The At this time, the wrap R is sandwiched and pressed between the pressing portion 31 and the protrusion 51b of the groove 51. When the lid portion 11 is further closed, the inner pressing portion 32 is inserted into the groove 52 while contacting the wrap R and pushing the wrap R downward. At this time, the wrap R is sandwiched and pressed between the pressing portion 32 and the protrusion 52b of the groove 52. In this way, tension is applied to the portion of the lap R that faces the blade portion 30 between the presser portions 31 and 32. At this time, since the wrap R enters the grooves 51 and 52, the winding cylinder A rotates accordingly, and the wrap R is pulled out.

  When the lid portion 11 is further closed as shown in FIG. 5, the other presser portion 33 comes into contact with the wrap R and is inserted into the groove 53 while pressing the wrap R downward. Next, the blade portion 30 comes into contact with the lap R and presses the lap R, and the lap R is cut before the lid portion 11 is completely closed or almost simultaneously with the lid portion 11 being completely closed. As shown in FIG. 6, when the lid portion 11 is completely closed, the tips of the other presser portions 33 come into contact with the concave portion 53 a at the bottom of the groove 53 with the wrap R interposed therebetween. By this other pressing portion 33, the lap R remaining on the winding tube A side by cutting is pressed against the case main body portion 10. The cut wrap R is pulled to the front side of the film case 1 and taken out. When the lid portion 11 is opened as shown in FIG. 7 for drawing out the next wrap R, the wrap R leading to the winding tube A is placed in the groove 50 and the grooves 52 and 53 on the case body 10 side. It enters the state.

  According to the above embodiment, since the presser portions 31 and 32 disposed on both sides of the blade portion 30 of the lid portion 11 are inserted into the grooves 51 and 52 on the case body portion 10 side, The tension of R can be reliably ensured, and the cutting of the wrap R can be stabilized. Further, since the wrap R enters the grooves 51 and 52 during cutting and the adhesion between the wrap R and the case main body 10 is increased, the wrap R is attached to the lid 11 side after cutting and the wrap R is unwound. Can be suppressed, and the next lap R can be pulled out appropriately. Further, since the outer presser portion 31 enters the groove 51, the blade portion 30 is completely hidden from the outside, and the user is prevented from touching the blade portion 30 by mistake.

  Since the outer presser portion 31 protrudes closer to the opening 20 than the inner presser portion 32, the portion closer to the user side than the blade portion 30 of the wrap R is pressed first, and then the blade portion of the wrap R. The portion inside 30 is pressed, and the wrap R on the blade portion 30 can be stretched. For this reason, the tension of the wrap R in the blade portion 30 can be ensured regardless of the strength of the pulling-out tension of the wrap R by the user.

  Another presser portion 33 is provided inside the inner presser portion 32, and the groove 53 is formed in the case main body portion 10, so that the lap R remaining on the winding tube A side is pressed by cutting, Rewinding of the wrap R at the time of cutting can be prevented. Moreover, since the adhesiveness between the wrap R and the case main body 10 is improved, adhesion of the wrap R after cutting to the lid 11 side can be suppressed, and the next wrap R can be pulled out more easily.

  Since the recess 53a into which the other presser 33 is inserted is formed in the groove 53 into which the other presser 33 is inserted, the adhesion between the wrap R and the case main body 10 is further improved. Therefore, it is possible to suppress adhesion of the wrap R to the lid 11 side after cutting and unwinding of the wrap R, and it becomes easier to pull out the next wrap R.

  When the holding piece 54 is formed in the opening 20 of the case main body 10, the sticking to the winding cylinder A due to the rewinding of the wrap R that could not be suppressed due to the effects of the holding portion and the groove described above is suppressed. And the return operation becomes easy.

  The holding portions 31 and 32 and the grooves 51 and 52 are formed in an arc shape along the circumferential direction around the shaft 22 of the lid portion 11. For this reason, since the shape of the grooves 51 and 52 is formed along the rotation of the presser portions 31 and 32 accompanying the opening and closing of the lid portion 11, for example, the width of the grooves 51 and 52 is minimized and the case body is minimized. The part 10 can be made compact.

  Since the inner wall 51a on the outer side of the groove 51 is formed with a protruding portion 51b that protrudes inward, the wrap R is sandwiched and pressed between the outer pressing portion 31 and the protruding portion 51b. For this reason, the wrap R is pressed at a position farther from the blade portion 30 than the inner wall 51c inside the groove 51, and a sufficient distance is formed between the portion for pressing the wrap R and the portion to be cut. As a result, it is possible to suppress the occurrence of defects in cutting due to excessive tension applied to a part of the film. In addition, since the portion where the wrap R is pressed is closer to the lap R take-out side, it becomes easier to take out the wrap R after cutting.

  The inner wall 52a on the inner side of the groove 52 is formed with a protruding portion 52b protruding outward, so that the wrap R is sandwiched and pressed between the inner pressing portion 32 and the protruding portion 52b. For this reason, the wrap R is pressed at a position farther from the blade portion 30 than the inner wall on the outer side of the groove 52, and a sufficient distance is formed between the portion for pressing the wrap R and the portion to be cut. As a result, it is possible to suppress a problem in cutting due to excessive tension applied to a part of the wrap R.

  Since the upper end surface of the inner wall 51a outside the groove 51 is lower than the upper end surface of the inner wall 51c, it is easy to take out the lap R after cutting.

  As shown in FIG. 7, the tip of the blade part 30 is located inside an imaginary line D connecting the vertices of the outer presser part 31 and the inner presser part 32. Thereby, contact with blade part 30 and a user's fingertip etc. can be avoided. In such a case, as shown in FIG. 9, the tip of the blade part 30 may protrude toward the opening part 20 rather than the inner pressing part 32.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the idea described in the claims, and these naturally belong to the technical scope of the present invention. It is understood.

  For example, in the above-described embodiment, the inner presser portion 32 and the outer presser portion 31 protrude from the blade portion 30 toward the opening 20, but only one of them protrudes from the blade portion 30. Also good. Moreover, in the said embodiment, although the film case 1 accommodates the wrap R, the film case which concerns on this invention is applicable also to the case of other films, such as aluminum foil other than a wrap, and cooking paper.

  INDUSTRIAL APPLICABILITY The present invention is useful for ensuring the tension of a film at the time of cutting, and suppressing adhesion of the film after cutting to the lid portion side and film rewinding.

DESCRIPTION OF SYMBOLS 1 Film case 10 Case main-body part 11 Cover part 20 Opening part 30 Blade part 31, 32 Press part 33 Other press parts 50-53 Groove

Claims (10)

A film case for storing a film wound on a winding tube,
A case main body in which an opening for drawing out the stored film from the winding tube is formed along the longitudinal direction;
A lid that rotates around an axis extending in the longitudinal direction of the case body and opens and closes the opening;
A blade portion that is formed along the longitudinal direction of the lid portion on the opening portion side of the lid portion and cuts the film when closing the opening portion, and along the longitudinal direction of the lid portion. Formed and provided with a presser part for pressing the film between the case body part when closing the opening,
The presser part is disposed on both sides of the blade part in the width direction of the lid part,
The case body is provided with a groove into which the blade and the presser are inserted when the opening is closed by the lid,
A film case in which at least one of the presser portions protrudes closer to the opening than the blade portion, and the groove into which the protruded presser portion is inserted is formed deeper than the groove into which the blade portion is inserted. .   The film case according to claim 1, wherein both of the presser portions protrude to the opening side from the blade portion. The presser part on the outer side in the width direction of the lid part from the blade part protrudes to the opening part side than the inner presser part,
3. The film case according to claim 1, wherein a leading end of the blade portion is located inside an imaginary line connecting apexes of the outer pressing portion and the inner pressing portion. On the inner side of the inner pressing portion of the lid portion, there is provided another pressing portion for pressing the film between the case main body portion when the opening portion is closed by the lid portion,
The film case according to any one of claims 1 to 3, wherein the case main body is provided with another groove into which the other presser is inserted when the opening is closed by the lid. .   The film case according to claim 4, wherein a concave portion into which the other presser portion enters is formed in the other groove.   The film case according to claim 1, wherein the pressing portion and the groove into which the pressing portion is inserted are formed in an arc shape along a circumferential direction around the axis of the lid portion.   The protrusion part which protrudes inside is formed in the inner wall of the outer side of the said groove | channel where the outer presser part of the width direction of the said cover part is inserted from the said blade part. Film case.   The protrusion which protrudes outside is formed in the inner wall inside the said groove | channel where the inner side press part of the width direction of the said cover part is inserted from the said blade part. Film case.   The upper end surface of the inner wall on the outer side of the groove into which the pressing portion on the outer side in the width direction of the lid portion is inserted from the blade portion is lower than the upper end surface of the inner wall on the inner side of the groove. The film case according to any one of 8.   A holding piece for the winding tube is formed from the film operation side end in the width direction of the case main body to cover 10% to 60% of the opening, and the holding piece is provided at the film operation side end. The film case according to claim 1, wherein the film case is formed to be rotatable around a longitudinally extending axis.

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