JPH0742783Y2 - Ring binder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention has a ring that is inserted into a binding hole formed in a document or the like, and is a so-called ring for opening and closing the ring to insert and remove documents and the like. Regarding the binder.

(Prior Art) According to a prior application for utility model registration (SHO 62-90428), the present invention rotatably fixes a rotating substrate to a fixed substrate fixed to the cover, and fixes the fixed substrate and the rotating substrate. A pair of substantially arc-shaped ring pieces that form a ring by projecting their respective end portions from each other are provided in a protruding manner, and at least one ring piece of the fixed board or the rotating board is integrated with the board to form the ring piece. Also, a two-hole ring binder has been proposed, which is characterized in that the ring piece can be displaced by a required amount in a direction substantially perpendicular to the ring opening / closing direction with respect to the other ring piece due to the material elasticity of the substrate.

(Problems to be Solved by the Invention) The ring binder according to the above-mentioned prior application is preferably made of resin because the material elasticity of the substrate and the ring piece is a requirement, but side edges of the fixed substrate and the rotating substrate are preferable. The core of the hinge ring is attached to the hinge ring provided on the main body of the hinge ring. Since the metal insertion hole is perpendicular to the mold removal direction, it is necessary to provide the mold with an angular pin for the core metal insertion hole and a small diameter pin that slides in the side direction of the mold with an air cylinder. However, there is a problem that the mold structure becomes complicated and the cost is increased, and that the molding time is long and the mass production is hindered by the multi-cavity production. In particular, the three-hole ring binder, which is the object of the present invention, becomes necessary as the file becomes larger, and the above problem becomes more serious. Therefore, while simplifying the structure of the mold for molding the ring binder consisting of the resin rotary substrate and the fixed substrate to reduce the cost and improve the productivity, a convenient three-hole ring binder that can be used with one touch is provided. It is something to do.

(Means for Solving Problems) A ring binder of the present invention devised to solve the above problems fixes two rotating substrates rotatably to a fixed substrate fixed to a cover, In the so-called three-hole ring binder made of resin, which is formed by projecting a pair of substantially arc-shaped ring pieces that form a ring by locking the ends of the fixed board and the rotating board, the fixed board side A hinge ring with an open side surface and a hinge ring with an open side surface in the same direction as the drawing direction of the fixed substrate molding die are provided at the required locations at the edges, and also on the side edges of the rotating substrate. Similarly, a hinge ring having an open side surface and a hinge ring having an open side surface in the opposite direction in the same direction as the drawing direction of the rotating substrate molding die are provided at required positions respectively, and the hinge ring of the fixed substrate and the hinge ring of the rotating substrate are provided. Straight up It is characterized in that the rotating substrate is rotatably fixed to the fixed substrate by arranging them side by side in line and inserting a cored bar into these hinge rings. In addition, one of the pair of ring pieces is provided with a locking hole and the other is provided with a locking projection for locking, and one rotary board is provided with one ring piece for rotation relative to the fixed board. It is fastened only to the other rotary substrate, and is provided with two ring pieces on the other rotary substrate, and is fastened with a spring interposed so as to slide appropriately, so that two ring pieces facing each other on the two rotary substrates are narrowed inward. By doing so, the locked state of the ring pieces at the above three positions is released, and the ring is expanded.

(Embodiment) FIGS. 1 to 11 show an embodiment of the present invention.
As shown in FIG. 1 to FIG. 5, mounting holes (17) are provided at appropriate places at the substantially lateral end and central portion of the base plate portion (23) of the fixed substrate (2), and the base plate portion is provided. (23) is integrally formed with a substantially arc-shaped ring piece (6b) (7b) (8b) having locking holes (12a) (12b) (12c) at its top end from one end, and also has a flat plate. A plurality of hinge rings (4d) are provided at the side edges of the part (26), which bulge in the direction of the upper surface and have open parts (14c) (14d) alternately provided on the upper and lower side parts thereof, and a fixed substrate. Stoppers (9a) and (9b) are formed at both ends of (2), and side edges thereof are bulged toward the upper surface to open portions (14e) on the lower side surface portion.
Provided with hinge rings (4c) (4c), and molded with a resin such as polycarbonate by a mold for injection molding in which the vertical direction is the pulling direction, and the fixed substrate in the mounting hole (17) and the like. (2) is fixed to the cover (1) by eyelets or the like. By the way, one rotating substrate (3a)
A substantially arc-shaped ring piece (6a) having a locking projection (13a) at the top end is integrally projected from one side end, and bulges to the lower surface side slightly inward from the side edge of the trailing edge and the upper surface The side is opened by the window hole (5a), but the hinge ring (4a) having the opening portion (14a) on the lower side surface is provided at an appropriate location at other locations, and the inner side edge of the rotating substrate (3a) is provided. A plate portion (18) is provided on the. Further, a substantially arcuate ring piece (7a) (8a) having locking projections (13b) (13c) at the top end is integrally projected from one end of the other rotary substrate (3b), and the rear edge A bulge toward the lower surface at a position slightly inward from the side end of the, and the upper surface is opened by the window hole (5b), but the hinge ring (4b) having the opening portion (14b) on the lower side surface is provided at other locations. As shown in FIGS. 8 and 9, the groove portion (20), which is provided at an appropriate position, is fitted around the inner side end of the rotating substrate (3b) and into which the plate portion (18) of the rotating substrate (3a) is fitted. Is formed by the receiving portion (21) from the upper surface side at the window hole (19) and at a position facing the window hole (19), and is molded from a resin such as polycarbonate by a mold for injection molding with the vertical direction as the pulling direction. Rotating board (3a) on hinge ring (4c) (4d) of fixed board (2)
Fit the hinge rings (4a), (4b) etc. of (3b),
The rotating substrates (3a) (3b) are configured to be rotatable with respect to the fixed substrate (2) by inserting the core metal (25) into communication with both hinge ring portions arranged in a straight line. By the way, the ring piece (6b) of the fixed substrate (2) has a notch on the right side of the tip, and the ring pieces (7b) and (8b) have a notch on the left side of the tip. And substantially vertical locking holes (12a) (12b) (12c) are provided. On the other hand, the ring piece (6a) of the rotating substrate (3a) has a notch on the left side of the tip, and the ring pieces (7a) (8a) of the rotating substrate (3b).
Has a notch on the right side of the tip, and is provided with locking protrusions (13a) (13b) (13c) substantially perpendicular to the axial direction of the ring piece.

Further, the structure of the locking portion is not limited to the above.
Furthermore, one of the ring pieces (6a) and (7a) of the rotating boards (3a) and (3b) is slightly different from the ring pieces (6b) and (7b) of the fixed board (2) from the state perpendicular to the respective boards. With an inclined posture, the locking portions of the ring pieces (6a) (6b) (7a) (7b) are in a direction substantially perpendicular to the axis of the ring pieces based on the material elasticity of one or both ring pieces and the substrate. It can be locked by a slight deformation. Further, in the ring piece (8a) of the rotary substrate (3b) with respect to the ring piece (8b) of the fixed substrate (2), the rotary substrate (3b) has a gap (22) shown in FIG. 8 with respect to the rotary substrate (3a). When they slide in the filling direction, the mutual locking portions are formed so as to be disengaged regardless of deformation. As described above, the rotating substrate (3b) is fixed to the rotating substrate (3a) so as to slide on the fixed substrate (2) when the ring piece (6a) and the ring piece (7a) are narrowed inward. , A sufficient gap (22) on the opposing surfaces of the base plates (24a) and (24b) of both rotary substrates so that the locking state of the ring piece is released.
Is provided.

Therefore, when opening the rings (6) (7) (8) in the state shown in FIG. 3, the ring pieces (6a) (7) of the rotating substrates (3a) (3b) are to be opened.
(a) is narrowed in the inward direction (arrow P shown in FIG. 6) perpendicular to the axis of the ring piece to release the locked state, and as shown in FIG. 1, the rotating substrates (3a) (3b) ) Is rotated in the direction of arrow Q, the rings (6), (7) and (8) can be expanded. Further, a spring (15) having rod shaft parts (16a) (16b) is interposed between the rotating base plate (3b) and the fixed base plate (2) via a core metal (25) to expand the ring and the ring. It is urged to recover when the piece is narrowed and released.

(Operation) The operation will be described based on the above embodiment. Fixed board (2)
The rotating substrates (3a) and (3b) are both made of resin and are formed by injection molding using a mold. And, the mold has the vertical direction as the pulling direction.

The fixed substrate (2) and the rotating substrates (3a) and (3b) are rotatably fixed to each other by means of the fixed substrate (2) and the rotating substrates (3a) (3).
b) Provide a hinge ring on the trailing edge of the core metal (25)
In the past, when attempting to form this through hole with a mold, it was necessary to provide the mold with a small diameter pin that slides in the side direction of the mold by means of an angular pin or an air cylinder, etc., as described above. However, in the ring binder of the present invention, since the opening portion and the window hole are provided in the upper side surface portion or the lower side surface portion of this hinge ring, that is, in the same direction as the die removing direction, these opening portions are formed in the die. If a protrusion with the same shape as the window hole and through hole is provided in the same direction as the mold withdrawal direction, the hinge ring through hole can be provided without providing the mold with an angular pin or other small diameter side slide pins. Can be formed. In addition, the hinge ring of each of the fixed substrate (2) and the rotating substrate (3a) (3b) does not have only one of the upper side surface portion or the lower side surface portion open, but the portion where the upper side surface portion is open and the lower side surface portion. Since the open part is combined with the open part, the hinge ring is in a circumferentially closed state when viewed from the side, and there is no fear that the cored bar inserted into the through hole will come off. By the way, when opening the rings (6), (7), and (8) in FIG. 3, the ring piece (6a) of the rotating substrate (3a) and the ring piece (7a) of the rotating substrate (3b) should be aligned with the axis with a finger. And in the vertical direction (arrow P), the lock is released, and
As shown in FIG. 1, when both rotating substrates are rotated in the direction of arrow Q, the rings (6), (7) and (8) are expanded.

If both rotary substrates are rotated to the fixed substrate (2) side from that state, the ring is again locked and closed as shown in FIG.

(Effects of the Invention) The present invention is as described above, and in order to form a through hole for inserting a core metal of a hinge ring that rotatably fixes a fixed substrate and a rotating substrate, a mold is specially formed. Since it is no longer necessary to provide parallel pins etc. that slide sideways with angular pins and air cylinders etc., it simplifies the mold and saves the operating time of these parts,
The cost reduction and the productivity improvement can be realized, and it is particularly effective for the large file of 3 holes of the present invention. Furthermore, 2
By narrowing the two ring pieces that straddle one rotating substrate, the three rings can be expanded, and the operation is extremely simple and easy to use.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view showing a state where a binder ring is opened by a file, and FIG. 2 is a perspective view showing a state where the binder ring is closed. FIG. 3 is a perspective view showing a state in which sheets are bound,
The figure is a perspective view showing the closed state of the binder alone, and FIG. 5 is a perspective view showing the expanded state of the binder. Further, FIG. 6 is a sectional view of an essential part showing a state where the ring piece is locked, and FIG. 7 is a sectional view of an essential part showing a state where the locking is released.
FIG. 8 is a top view of the ring binder of the present invention, FIG. 9 is a sectional view taken along the line AA in FIG. 8, FIG. 10 is a top view showing a rotating substrate of the binder, and FIG. 11 is a fixed substrate of the binder. It is the top view which showed. (1) …… Cover, (2) …… Fixed substrate, (3a) (3b)…
… Rotating substrate, (4a) (4b) (4c) (4d) …… Hinge ring, (5a) (5b) …… Window hole, (6) (7) (8) …… Ring, (6a) (6b) ) (7a) (7b) (8a) (8b) …… Ring piece, (9a) (9b) …… Stopper, (10) …… Spelling hole,
(11) …… Paper, (12a) (12b) (12c) …… Locking hole,
(13a) (13b) (13c) ... Locking protrusion, (14a) (14b)
(14c) (14d) (14e) …… Opening part, (15) …… Spring, (16a) (16b) …… Bar shaft part, (17) …… Mounting hole,
(18) …… plate part, (19) …… window hole, (20) …… groove part,
(21) …… Receiving part, (22) …… Gap, (23) (24a) (2
4b) …… Base plate part, (25) …… Core shaft, (26) …… Flat plate part.

Claims (1)

[Scope of utility model registration request] 1. A pair of a pair of rotary plates, which are rotatably fixed to a fixed substrate fixed to a cover, and whose ends are locked to the fixed substrate and the rotary substrate to form a ring. In a so-called three-hole ring binder made of resin, which is formed by projecting substantially arc-shaped ring pieces at three locations, a hinge in which the fixed portions of the fixed substrate and the rotary substrate are provided with appropriate open portions in the upper surface direction and the lower surface direction. A ring is formed, one of the pair of ring pieces is provided with a locking hole and the other is provided with a locking projection to lock the ring piece, and one rotating board is provided with one ring piece for rotation relative to the fixed board. Only the movement is fixed, and the other rotating substrate is provided with two ring pieces and is fixed by interposing springs so that the two rotating pieces slide inward. By constricting the 3 holes of the ring binder locked state is released ring ring is characterized by being configured so as to be widened.