JP2000289376A - Binder for fixing back part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To turn over bound papers by nearly 360 deg. without necessitating a binding machine for binding paper. SOLUTION: This binder is a back part fixing binder for fixing a bundle of papers and includes back parts 3, 4 and 5 and finger-like parts 1 and 11, both of which are arranged longitudinally apart from each other and extend from the back parts so as to form loops. The respective finger-like parts consist of two 1 and 11 arranged opposite to each other on the back parts 3 and 4. The back parts 3, 4 and 5 form a hinge part 2. In at least either one 1 of the finger-like parts, at the end part 12 opposite to the back part, a push button 7 is provided. In the other finger-like part 11 opposing to the finger-like part 1, at the end part 22 opposite to the back part, an opening part 10, the shape of which nearly corresponds to the push button 7, is provided so as to allow to engage with the push button 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary back binder for binding a bundle of sheets (sometimes referred to as a rotary binder).

[0002]

2. Description of the Related Art Conventionally, a binder for fixing a back portion is constituted by integrating a back portion and a finger portion (finger portion) which is arranged at an interval from the back portion and extends in a ring shape from the back portion. ing. For example, according to EP-A-0 704 322, plastic back fixing binders which can be produced by injection molding are known. The binder for back fixing needs to use a binding machine (bookbinding machine) for expanding a ring when binding paper.
That is, the ring is substantially closed by the spring pressure of each finger, and the sheet can be fixed.

[0003] However, when used privately or semi-professionally, such back fixing binders have the disadvantage that the binding machine must be used for the first use or repeated use. Further, such a binder for fixing the back portion has a disadvantage in that the bundle of sheets bound properly cannot be completely rotated by 360 degrees. It is the back part of the back fixing binder,
This is because such a turning operation is greatly hindered.

[0004]

SUMMARY OF THE INVENTION The present invention is based on the conventional state of the art of binders for fixing a back, and can be manually closed without the need for a binding machine for binding paper. The purpose of the present invention is to provide a binder for fixing a back portion of the type mentioned above. Another object of the present invention is to provide a binder for fixing the back, which can turn the bound paper around 360 degrees.

[0005]

SUMMARY OF THE INVENTION In a back binder of the type mentioned at the outset, the above-mentioned problem is achieved by the present invention through the following points. That is, the individual finger portions are arranged on the back portion so as to face each other in two parts, the back portion forms a hinge (hinge portion), and at least one of the finger portions has At the opposite end of the portion, a first fastening means is provided and the opposing finger portion comprises, at an opposite end of the back portion thereof, a second fastening means generally shaped to complement the first fastening means, The first and second fastening means engage (mesh) with each other to provide a detachable (releasable) connection state. The following operation can be easily performed by using the back fixing binder having such a configuration. That is, a sheet having a considerable amount of punched holes is passed through a series of finger portions and then pressed together so that the finger portions face each other. Fastening means (coupling elements), for example, press-fit projections,
A mating condition can be created by joining, in particular by mating, a second fastening means of a corresponding complementary shape, for example an opening.

[0006] In a preferred embodiment of the present invention, the back is generally made of square material, which is joined by a thin connecting member so as not to be separated. And
The finger portion is preferably semicircular, and a fastening means comprising a press-fitting projection is provided at an end thereof.

[0007] Other advantageous embodiments are described in the other claims. That is, in claim 2, the back part (3,
The connecting means (5) comprises a substantially right-angled member (3, 4), is thinner than the right-angled member (3, 4), and acts as a hinge (hinge). Discloses a binder for fixing the back portion, the connection being held by each other. In the third aspect, the finger portion (1, 11) is a part of the torus, and is configured so that the sum of its angles and its back portion (3, 4) are combined to form a full circle, At the ends (12, 22) which abut each other, fastening means (7, 27, 37:10, 30, 40)
A binder for fixing the back is characterized in that a binder is provided. Further, in the fourth aspect, the finger-like portions (1, 1
1) is a semicircle and its ends (12, 2)
In 2), the fastening means (7, 27, 37:10, 3)
(0, 40) are disclosed. According to the fifth aspect, the end portions (12, 22) of the finger portions (1, 11) on the opposite side to the back side.
Discloses a binder for fixing a back portion, wherein the outer surfaces of the finger portions (1, 11) are in contact with each other so as to be on the same plane. According to claim 6, when a plurality of binders for fixing the back portion are arranged, only two or more finger-shaped portions (1, 1 ', 11) of two or more are fixed to only a predetermined number of fastening means. (7, 27, 37:10, 30,
(40) is disclosed. According to the seventh aspect, the cross section of the finger portion (1, 11) is formed in a U-shape by a concave portion (18) formed inward from the end surface (6; A back fixing binder characterized by having a shape is disclosed. Claim 8 discloses a binder for fixing a back portion, wherein a curved surface portion is provided at a corner of a cross section of the finger portion (1, 11). According to a ninth aspect of the present invention, the side surfaces of the finger portions (1, 11) are provided at the end surfaces (6; 12,
A binder for fixing the back is disclosed, which is tapered (19) toward a part opposite to the part (22). The first fastening means is a push button (7) having a shaft (8; 38) and a thick head (9; 39), and the second fastening means is a hollow cylindrical portion (13; 43)
Opening (10; 50) and head (9; 39)
Opening (14;
44) discloses a binder for fixing the back portion.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The binder according to the present invention will be described in detail using preferred embodiments with reference to the accompanying drawings. The contents of the drawings are as follows.

FIG. 1 is a partial sectional view (partially cut away sectional view) of a finger portion (sometimes referred to as a finger portion or a knob portion) in a back fixing binder in a fully opened state. This finger part is composed of two finger parts (finger parts) 1, 11, and these finger parts are connected by a hinge 2. The hinge 2 includes two rectangular members 3 and 4 extending in the longitudinal direction of the binder, and these are joined together by a joining portion 5 having a specification as thin as possible so as to be integrated over the entire length of the binder.
The square members 3 and 4 form a spine portion together with the joint portion 5, and finger portions 1 and 11 provided on the left and right are disposed on the opposite surface 6 of the spine surface 21 opposite to the spine. ing. Therefore, when the left and right finger portions 1 and 11 are closed by the hinge effect of the thin joint portion 5, the end surfaces 12 and 22 in front contact with each other, and as shown in FIG. Can be.

On the end face 12 of the finger portion 1, a press-fitting projection 7 is provided, which is composed of a round shaft portion 8 and an expanded head body 9. The round shaft portion 8 can of course be square or another shape, and the round protruding head body 9 has a cylindrical shape in which the facing surface is generally flat here. As long as the essential outer diameter of the body 9 is configured to be larger than the shaft diameter 8, it can be changed to various modes. At the same time, the diameter of the head 9 is preferably smaller than the width of the fingers 1, 11 so that a closed loop of the fingers can be accurately formed. Therefore, when the right and left finger parts 1 and 11 are closed,
The press-fitting projection 7 comes into contact with the opening 10 provided at the end 22 opposite to the hinge of the finger portion 11, and the opening 10 has a shape complementary to the shaft 8. Here, there are provided a cylindrical opening 13 formed so as to be cut out, and an expanded cutout 14 for accommodating the head 9 of the press-fitting projection 7.

That is, FIG. 1 shows the finger portions 1 and 11, and in the production by injection molding, an injection head 15 having an injection opening 16 is located on a flat portion 17 of the finger portion 1. Are also shown. The reference symbol 18 indicated by a dotted line in the drawing
Indicates the inner surface of the cutout portion, and the other portion has a solid specification made of the material of the finger portions 1 and 11, and each has one groove.

In another embodiment of the present invention, the binder for fixing the back portion can be punched out of a plastic material, for example, instead of being manufactured by injection molding. Furthermore, the binder for fixing the back part can be manufactured by extrusion molding. In another specification, the binder for fixing the back portion may be made of metal, for example, tinplate, and it is particularly preferable to use a punching method. In that case, the binder for fixing the back part does not have the flat part 17, and the notch 18 on the inner side can be omitted. Alternatively, the notch portion 18 can be formed by a side part that is formed by bending or punching.

FIG. 2 is a sectional view taken along the line II-II in FIG. 1 and shows a sectional view of two adjacent fingers as viewed from the direction of the arrow in the figure. In all the drawings, the same components are denoted by the same reference symbols. Therefore, it can be clearly understood that the back portion 3 forms an integral connection between the two adjacent finger portions 1 and 1 '. At the same time, it can be seen that the hinge 5 occupies only a small percentage of the height of the back part 3. Here, it can also be understood that the center portions of the finger portions 1 and 1 ′ are hollowed out by the cutout portions 18, and the cross section is U-shaped. In the specification example shown here, the side surface of the finger portion 1, 1 'or 11 has a slight angle, for example, as shown by a reference numeral 19, and has an angle of 2 degrees as an example, and the finger portion slightly tapers. The bound paper is lightly rolled at the center of the finger.

FIG. 3 shows a cross section of the fingers 1 and 11 when cut along the same line as FIG. 2, that is, along the line III-III in FIG. In this embodiment, it can be seen that the press-fit projection 7 does not protrude its head 9 above the shaft 8 in side view. At the same time, it can be understood that the width of the press-fit projection 7 is selected according to the width of the notch 18.

FIG. 4 shows a closed state of the fingers 1 and 11 in the binder for fixing the back portion of FIG. From this figure it can be seen that the projection of the thin hinge component 5 is small and that the dimensions of the back fastening binder are increased only slightly. At the same time, by selecting the extremely thin square members 3 and 4, the back portion can be made extremely thin as a whole. Therefore, even if the paper is bound to the finger portions 1 and 11, the longitudinal length of the binder is reduced. It can rotate approximately 360 degrees around the axis 19. Further, the surfaces 12, 22 of the back fixing binder come into contact in a certain manner,
It can be clearly seen that the outer surfaces of the binder for the back fixing smoothly close together and, in the embodiment shown, form an inner race and an outer race.

FIG. 5 is a top view of the fingers 1, 1 'of a series of back fixing binders arranged in parallel when the hinge 5 is fully opened. Here, it is understood that an injection point (injection position) of the plastic material of the binder for fixing the back portion is provided on the finger portion 1.

FIG. 6 is a bottom view of the back fixing binder shown in FIG. 5, but the difference cannot be expressed because the components of the press-fitting projection 7 and the opening (notch) 10 facing each other are small. That is, the thin hinge 5 is
4 extend flat, so that only the flat surface 21 as a whole is recognized in the bottom view. FIG. 6 shows a state in which the back fixing binder is spread when the user binds the paper for the first time. Therefore, after the user inserts the paper into the finger portions 1 or 11, the user can close the finger portions 1 and 11 successively to reach a closed state as shown in FIG.

The binder for fixing the back is preferably made of plastic, and is preferably produced by injection molding. The height of the square members 3 and 4 drawn exaggeratedly in the figure is, for example, 0.5 mm.
And the total height of the spine is 1 mm. Of course, it is also possible to form the components 3 and 4 of the back part other than square. This is the same for the finger portions 1 and 11. They do not need to be particularly aligned on the same arc. In other words, it is also possible for one finger to extend an arc larger than 180 degrees, for example, near 270 degrees or 360 degrees, and to shorten the complementary arc accordingly.

Although it is slightly disadvantageous to turn over the bound sheets, it is of course possible to replace the fingers 1 and 11 with a circle and select, for example, a rectangle or a square. Particularly, the shape of the finger portions 1 and 11 becomes a semicircle having a chord-shaped bottom surface when the finger portions 1 and 11 are closed.
It is also possible to configure so that a mark (display part) can be formed at that location. In that case, the finger preferably has a D-shaped cross section. Furthermore, it is also possible to chamfer the finger portion of the back fixing binder to reduce the slippage of the bound paper. Such a chamfer covers all four edges of the finger portions 1 and 11. That is, it is particularly preferred to chamfer all edges designated by reference numeral 24 in FIG.

With the back fixing binder presented here, it is possible in particular to remove or add a punched sheet without using a machine. This is because the connection by the press-fit projection can be opened and closed many times. In the embodiment presented, a press-fit projection as a fastening means is provided on each pair of constituent fingers, but this is not necessary. For example, even if a plurality of back fixing binders are arranged, and only two finger pairs (every other one) are provided with press-fitting projections and connected to each other, constituent elements of the back portion where the closed hinge 5 contacts are formed. This is because, together with 3 and 4, the intervening finger portion is held without firmly separating without a press-fitting projection (without coupling). This means, in particular, that a secure binding of the bound paper is ensured, even if the individual press-in projections are accidentally folded or worn out.

In the shape of the simple specification, the press-fitting projections 7,
8 and 9 may have a shape in which the protruding head 9 is omitted.
If each press-fit projection has only the shaft portion 8, the opening 10
By choosing the diameter of the shaft somewhat smaller than the shaft diameter,
A firm connection can be obtained by friction fastening instead of shape fastening.

FIG. 7 is a side view of the finger portion of the binder for fixing the back portion according to the second embodiment. Aside from the connection by the press-fit projections, it is also possible to form a detachable (releasable) connection using hook components. Here, each finger part 1, 11 is provided with a hook 27, 37 having a complementary shape in the fastening means, respectively. They engage smoothly and form a (mathematically) continuous transition from finger 1 to finger 11. In the simple specification of the hooks 27, 37 shown, they occupy the entire width of the fingers 1,11. In another embodiment, hook 2
A combination of tongues and grooves can be provided at portions 7 and 37, thereby preventing a hook that is applied when a shearing force is generated from coming off sideways.

FIG. 8 is a front view of the finger portion of the back fixing binder according to the third embodiment. Here, the fastening means (fixing components) 30, 40 consist of pins 30 projecting from the ends of the finger parts 1, which for example also preferably have small projections 31 on both sides. A complementary shape to this is that a groove 40 is provided at the end of the finger portion 11 and the pin 30 is inserted therein. Here, the groove 40 extends over the entire width of the end portion, has a notch not shown in the drawing, and is configured so that the notch or small projection 31 can be fitted therein. Preferably, there is.

FIG. 9 shows a cross section of the finger portion of the back fixing binder in the fully opened state according to the fourth embodiment. In comparison with the other figures, the same features of the back fixing binder formed from these fingers are denoted by the same reference symbols. On the end face 12 of the finger part 1 a press-fit projection 7 is provided as fastening means, which has a partially round and partly flat shank 38 and a partially protruding head 39. . Here, the essential outer diameter of the head 39 is at least partially larger than the shaft diameter 38. The inward side of the finger 1 is provided with a flat part 41 on the side, which is a rounded front part 42.
It is connected with.

When the left and right finger portions 1 and 11 are closed, the press-fit projection 7 engages with the opening 50 at the opposite end 22 of the hinge of the finger portion 11. Here, the opening 5
0 has a shape complementary to the shaft portion 38, in this case, has a cylindrical opening 43, and the opening edge is widened. Further, an extended notch 4 for accommodating the head portion 39 of the press-fit projection 7.
Have four. Here, the inward portion 45 of the notch 44 is
It is preferable that the press-fit projection 7 is formed in a shape complementary to the flat portion.

FIG. 9 shows a finger portion, and also shows that the injection head rests on the flat portion 17 of the finger portion 1 during its production by injection molding. Here, for example, 34 fingers are provided in a general A4 size, and at this time, an injection port is provided on the upper or center finger of the sixth to seventh fingers counted from the end. You can see that it is. Reference numeral 18 indicates the inner surface of the notch, the other part being solid with the material of the fingers 1 and 11 and each forming one groove. In this example, the hinge 5 is rounded in an arc on the side facing the surface 21.

FIG. 10 shows a vertical cross section of the finger portion 1 when cut along a line along the line XX in FIG. Here too, it can be pointed out that the foot part 47 of the lower surface 12 arranged below the protruding head 39 is visible.

Finally, FIG. 11 is a bottom view of the finger of the binder according to FIG. Here, a circular opening 50 can be clearly seen, which has a semicircular taper for the shaft part. The appearance of the projection 7 indicates that the inside portion is flattened and that the foot portion 47 is not provided. This enables easy release of the binder from the injection mold.

[0029]

According to the present invention, based on the conventional state of the art of the binder for fixing the back portion, it is possible to easily use the paper without binding machine for binding the paper. Was. Further, according to the present invention, the bound paper can be turned over by about 360 degrees, and the usability is extremely good.

[Brief description of the drawings]

FIG. 1 is a diagram showing a cross section of a finger portion of a back fixing binder in a fully opened state according to a first embodiment.

2 shows a view in the direction of the line of sight of two adjacent fingers and a longitudinal section along the line II-II according to FIG. 1;

3 shows the line of sight of the finger and the line II according to FIG.
FIG. 3 is a diagram showing a vertical section along I-III.

FIG. 4 is a partial cross-sectional view of the finger section shown in FIG. 1 in a closed state.

FIG. 5 is a top view of a back fixing binder provided with a plurality of finger portions shown in FIG. 1;

FIG. 6 is a bottom view of a back fixing binder provided with a plurality of finger portions shown in FIG. 1;

FIG. 7 is a side view of a finger portion of a back fixing binder according to a second embodiment.

FIG. 8 is a front view of a finger portion of a back fixing binder according to a third embodiment.

FIG. 9 is a cross-sectional view of a finger portion of a back fixing binder in a fully opened state according to a fourth embodiment.

FIG. 10 is a vertical cross-sectional view taken along the line of sight of the finger portion and the line XX in FIG. 9;

FIG. 11 is a bottom view of the finger portion of the back fixing binder in FIG. 9;

[Explanation of symbols]

 1, 1 ', 11 Finger part (finger part) 2 Hinge part 3, 4, 5 Back part 6 End face of finger part 7, 27, 37 First fastening means (push button) 8, 38 Axis 9, 39 head Part 10, 30, 40 Second fastening means (opening) 12 Opposite end 13, 43 Cylindrical part 14, 44 Opening

Claims (10)

[Claims] 1. A back portion (3, 4, 5) and finger portions (1, 1 ', 11) which are arranged at a distance from each other in the length direction and extend from the back portion while forming a loop. Wherein the fingers (1 and 11) are formed from two members arranged opposite to each other on the back (3, 4). The back (3, 4, 5) has a hinge (2)
At least one of the finger portions (1) has a first fastening means (7, 27, 37) at an end (12) opposite to the back portion, and the other opposed to the first fastening means (7, 27, 37). A second fastening means (10, 30, 40) having a shape corresponding to the first fastening means (7, 27, 37) is provided on the end (22) of the finger (11) opposite to the back. A first fastening means (7, 27, 37) and a second fastening means (10, 30, 4, 4).
A back fixing binder characterized by forming a detachable connecting portion by engaging with (0). 2. The back portion (3, 4, 5) is formed of a substantially right-angled member (3, 4), and is thinner than the right-angled member (3, 4). 2. The binder according to claim 1, wherein the connection is maintained by connection means acting as hinges. 3. The finger (1, 11) is a part of a torus, and is formed so that the sum of its angles and its back (3, 4) are combined to form a full circle. The said first and second fastening means (7, 27, 37:10, 30, 40) are provided at the abutting end (12, 22). Back fixing binder. 4. The finger (1, 11) is semicircular,
4. The device as claimed in claim 1, wherein the fastening means are provided at their end portions (12, 22) which abut against each other. The binder for fixing the back as described above. 5. An end (12, 22) of the finger (1, 11) opposite to the back side of the finger (1, 11) such that the outer surface of the finger (1, 11) is on the same plane. The back-fixing binder according to any one of claims 1 to 4, wherein the binder is in contact with each other. 6. A fastening means (7, 27, 37:10, 30, 40) is provided in some of the total number of finger portions (1, 1 ', 11) provided from two or more. The back fixing binder according to any one of claims 1 to 5, characterized in that: 7. A cross section of the finger (1, 11) is formed by a concave portion (18) formed inward from a portion opposite to the end face (6; 12, 22) of the finger and formed in a U direction. The back fixing binder according to any one of claims 1 to 6, wherein the binder is shaped like a letter. 8. A curved surface portion is provided at a corner of a cross section of the finger portion (1, 11).
The binder for fixing a back portion according to any one of the above items. 9. A side surface of the finger portion (1, 11) is tapered (19) toward a portion opposite to an end surface (6; 12, 22) of the finger portion. Claim 1 to
9. The binder for fixing a back portion according to any one of items 8 to 8. 10. The first fastening means comprises a shaft (8; 3).
8) and a push button (7) having a thick head (9; 39), wherein said second fastening means comprises a hollow cylindrical part (1).
3; 43) and an opening (14; 44) enlarged to receive the head (9; 39) as compared to the hollow portion. A back fixing binder according to any one of claims 1 to 9.