JPH0737656U - Album mount binding screw - Google Patents

Abstract

(57) [Summary] [Purpose] The present invention relates to a screw for binding an album mount. [Structure] For binding an album mount, which comprises a pair of a base 1 having a female shaft 3 provided at one end of a cylindrical shaft 2 and a collar 4 at the other end, and a stopper 6 having a male screw 9 protruding from the collar 8. In the screw, a plurality of protrusions 5 with an acute tip inside the collar 4 at the base.
This is a screw for binding an album mount with a structure provided with. [Effect] Since the protrusions bite into the binding piece, when binding the mount, the base does not rotate together with the rotation of the stopper, and the mount can be easily and reliably bound without pressing the base with a finger or the like. be able to.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an album mount binding screw having a protrusion on a flange of a base portion having a female screw to prevent co-rotation when tightening the screw.

[0002]

[Prior art]

 Generally, in an album in which the mount can be changed, the base that has a female screw on one end of the cylindrical shaft that is inserted into the binding hole of the mount and a flange on the other end, and a male screw that projects on the flange The front cover and backing sheet are bound using a binding screw that consists of a pair of locking parts. In this case, when tightening the stopper with the male screw to bind the mount, the base with the female screw moves straight forward to a certain extent and clamps the mount, and binds the mount. During the process, the base will rotate as the stopper rotates, and it will no longer be possible to securely tighten the screws. Therefore, in order to securely tighten the screws with each other, it is necessary to rotate the screws of the stopper at the same time as pressing the screws of the base on the opposite side with fingers etc. to prevent the base from co-rotating. There was a great deal of annoyance.

For this reason, for example, as in a binding device disclosed in Japanese Utility Model Publication No. 50-32012, there has been proposed a structure in which a ridge of a horn is integrally formed on the inner surface of the collar of the base piece. In such a structure, the binding holes of the binding piece on the cover must be changed to a shape in which the ridges are fitted, and the conventional binding holes cannot be used for a round cover. In addition, since the front and back sides of the cover are usually the same, the binding holes on the cover binding piece on the side where the stop piece with male threads without angular ridges are fitted remain square. However, there was a drawback in that there was a gap between the diameter of the male screw and the cover sheet, and the cover could not be fixed securely. Further, there is also proposed that the outer shape of the shaft of the base part is square to prevent co-rotation (see Japanese Utility Model Publication No. 58-23671), but also in this case, the binding hole of the mount is changed to square. It has to be done and the conventional mount with round holes cannot be used.

[0004]

[Problems to be solved by the device]

 The present invention thus eliminates the disadvantage that the conventional binding screws rotate together when tightening them, and even with the conventional cover and backing sheet, the tightening work of the screws when binding the backing sheet can be performed reliably and easily. Is what you are trying to do.

[0005]

[Means for Solving the Problems]

 The present invention has a base (1) provided with a female screw (3) at one end of a cylindrical shaft (2) which is inserted into a binding hole of a mount, and a flange (4) at the other end, and a collar (8). In an album mount binding screw including a pair of stoppers (6) projecting male screws (9), a plurality of protrusions (5) having sharp edges are provided inside the collar (4) of the base. The above problems are to be resolved.

[0006]

[Action]

 The operation of the present invention having the above structure will be described with reference to FIG. 2. When binding the mount (12) to the covers (10) and (13), the shaft (2) of the base (1) is bound to the cover binding piece (11). ), (14) and the backing sheet (12) are inserted into the binding holes, and the stopper (6) is screwed from the other end, and is rotated and tightened. At first, the base moves forward along with the rotation of the stopper. . If tightening is continued as it is, an acute-angled protrusion (5) provided inside the collar (4) at the base bites into the edge of the binding hole (15) of the binding piece (11) on the back cover, and the base is fixed. . Therefore, even if the tightening is further advanced, the base does not rotate together with the rotation of the stopper, and the stopper can be tightened to the end. Even when the screws are loosened for adding a mount, the base (1) is fixed to the binding piece (11) on the cover, so that the stopper can be rotated without pressing the base with a finger or the like. You can loosen the screw by itself.

[0007]

【Example】

 An embodiment will be described below with reference to the drawings. In FIG. 1, (1) is a base portion, one end of a shaft (2) which is inserted into a binding hole of a cover sheet binding sheet or a mount sheet is provided with a female screw (3), and the other end is The collar (4) is provided with a plurality of wedge-shaped protrusions (5) (four in this embodiment) having an acute tip along the shaft inside the collar. Further, (6) is a stopper, and a flange (8) having a groove (7) for inserting and rotating a screwdriver or a coin on the front surface and a female screw (3) of the above-mentioned base screwed on the back surface thereof. It is provided with a male screw (9) for A pair of the base portion (1) and the stopper portion (6) constitutes a binding paper for the album mount.

In order to bind the backing sheet onto the cover sheet by using the screws, as shown in FIG. 2, the binding pieces (11) on the back cover sheet (10), the necessary number of backing sheets (12), and the front sheet are attached. The base shaft (2) is inserted into each binding hole in the order of the binding pieces (14) of the cover sheet (13), and then the male screw (9) of the stopper is screwed into the female screw (3) of the base. When coins are inserted into the grooves (7) and the stopper is rotated, the stopper and the base move forward while sandwiching the backing sheet and the like, and the wedge-shaped protrusions (5) bind the binding pieces (11) on the back cover. The base is fixed by biting (15) around the hole. Further, even if the stopper is rotated, the base does not rotate together, and the stopper can be rotated to the end without pressing the base with a finger or the like, and the bus firmly clamps the mount. When loosening the screws for adding a mount, etc., the wedge-shaped projections (5) at the base have already been cut into the binding pieces (11) and fixed, so the screws can be loosened simply by rotating the stopper. it can.

The shape of the projection is not limited to the wedge shape along the axis as in the present embodiment, but a conical projection as shown in FIG. 3A and a radial projection as shown in FIG. 3B. Square protrusions, which are raised in the peripheral direction as shown in (C), and square protrusions provided along the circumference as shown in (D), which have sharp tips and bite into the binding piece. With such a shape, the shape and the number can be arbitrarily selected.

[0010]

[Effect of device]

 In the case of the present project album mount binding screw having the above structure, the protrusion inside the collar bites into the cover binding piece to fix the base, so that when binding the mount, the base may rotate together with the rotation of the stopper. In addition, it is possible to easily and reliably bind the mount without pressing the base portion with a finger or the like. Similarly, when loosening the screw by adding a mount, the screw can be loosened just by rotating the stopper. Moreover, since it is not necessary to change the binding piece of the cover sheet or the binding hole of the mount sheet, it is an excellent idea with a high economic effect that it can be used as it is on the conventional cover sheet or mount sheet.

[Brief description of drawings]

FIG. 1A is an exploded perspective view of a screw of the present invention, and FIG. 1B is a plan view of a base portion.

FIG. 2 shows a state in which a mount is bound using screws of the present invention,
It is an expanded sectional view of the binding part of an album.

3A and 3B are a perspective view and a plan view of a base portion showing another embodiment of the protrusion in the present screw, wherein FIG. 3A is a conical protrusion, FIG. 3B is a radial rectangular protrusion, and FIG. The wedge-shaped protrusion (D) indicates a rectangular protrusion in the circumferential direction.

[Explanation of symbols]

 1 Base 2 Shaft 3 Female Screw 4 Tsuba 5 Protrusion 6 Stopper 8 Tsuba 9 Male Screw

Claims (1)

[Scope of utility model registration request] 1. A base (1) provided with a female screw (3) at one end of a cylindrical shaft (2) and a collar (4) at the other end, and a collar (8).
In a screw for binding an album mount, which comprises a pair of stoppers (6) projecting male screws (9) on the base, a collar (4) at the base is provided.
A screw for binding an album mount, which is provided with a plurality of protrusions (5) each having an acute tip inside.