JPH0813594B2 - Ring fittings - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present application relates to a ring fitting for opening and closing a binding rod and detachably binding a sheet with binding holes.

2. Description of the Related Art Conventionally, on the left and right receiving ribs of a sheath plate, which is provided with receiving ribs bent inward, on the left and right side edges along the longitudinal direction of a long plate formed in a curved cross section in the width direction. , A pair of left and right binding rods in the shape of a large number of arcs, which are respectively planted in the respective working plates, while engaging the outer edges of the working plates made of a pair of long elastic plates whose inner edges are bendably joined. It projects above the sheath plate through the notch holes provided in both side plates of the sheath plate, and when the pair of operating plates bends in a valley fold, the tips of the pair of left and right binding rods are closed to form a mountain fold. It is configured to open a pair of left and right binding rods when bent at the same time.Furthermore, at both ends of the sheath plate, the lower part is bent upward in a U-shape, and the lever part having a finger rest on the upper part can be vertically tilted. And the lower ends thereof are engaged with engaging recessed holes provided at inner edge ends of the pair of operating plates. Ring fittings are known.

The problem to be solved by the invention is that the conventional ring fitting described above rarely occurs when a strong shock is applied from the outside such as when a file is accidentally dropped while a document or the like is spelled. However, there was a fear that documents would be deviated by opening a pair of binding rods unnecessarily.

The present application is intended to eliminate such a defect.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention has the above-mentioned both receiving ribs of a sheath plate having on both side edges along the longitudinal direction, respectively, receiving ribs bent inward and downward, the inner edges Are engaged with the outer edges of a pair of long actuating plates that are bendably joined to a valley fold and a mountain fold, and a pair of arc-shaped binding rods respectively planted in the pair of actuating plates are attached to the sheath plate. Projecting above the sheath plate through notch holes provided at both side edges of the operating plate so that the tips of the pair of binding rods can be opened and closed by the bending action of the valley fold and the mountain fold of the pair of operating plates, and the operating plate At both sides of the inner edge joint portion, engaging recess holes are provided by notching the inner edge, and inwardly protruding projections are provided at opposite side edges of the engaging recess hole, and both end portions of the sheath plate are provided. Position, the upper part can move the finger rest part, the lower part can move in the engaging concave hole, and is larger than the facing width of the protruding part. listen,
In addition, a lever part is provided which is vertically tiltable so that a neck part capable of forcibly overcoming the protrusion during movement and a working part which pushes up the operating plate from the lower surface and bends into a mountain fold are connected. In the above, preferably, the neck is formed in a U-shaped cross section in order to facilitate the tilting operation of the lever piece, and in order to facilitate the production, the bottom piece of the bottom piece is formed. On the upper side of the vertical piece of the fitting part piece, which has sliding contact pieces on both side edges that slide in the longitudinal direction of the receiving ribs of the sheath plate and which has vertical pieces at the outer ends, lever pieces are provided. Is supported so as to be vertically tiltable, and the fitting portion piece is fitted to the receiving rib of the sheath plate via the sliding contact piece.

Action However, when a document or the like is bound, the pair of actuating plates bends in a valley fold to close the pair of binding rods, and the neck of the lever piece rides over the protrusion to engage the engaging recess hole. Of the lever, the lever piece is placed in an upright state, and when the lever piece is pushed outward from this state, the lever piece tilts vertically with respect to the sheath plate, and at the time of this tilting, When the lever is forced over the protrusion and is positioned in the direction of the inner end of the engagement recess, and the lever piece is further pressed outwardly from this state, the pair of operating plates are pushed up from the lower surface by the action portion. ,
The pair of actuating plates are bent in a mountain fold shape, and the pair of binding rods are opened, so that a document or the like is bound in this state.

Further, from this state, when the pair of binding rods is closed, if the binding rods are pressed inward with fingers as in the conventional case, the pair of operating plates are bent in a valley fold shape, and the pair of binding rods are closed. With
The lever piece tilts in the upright direction due to the bending action of the pair of actuating plates, and the neck portion stops at a position not exceeding the protrusion. Then, if the lever piece is pressed further inwardly from this state, the neck is forced to ride over the projection and is positioned at the outermost end of the engaging recessed hole, and the lever piece is in the upright state, Suppress the upper surface of the operating plate in which the upper edge of the portion is bent in a valley fold shape.

Therefore, even if an impact is applied from this state and the pair of actuating plates try to bend in a mountain fold shape, the neck portion of the lever piece may move over the protrusion of the engaging recess hole and move toward the inner end thereof. Therefore, the upper edge of the neck maintains the state of restraining the upper surfaces of the pair of operating plates.

Example Hereinafter, an example of the present application will be described in detail with reference to the drawings.
(1) is a receiving rib (2), (2) bent inward downward on the left and right side edges along the longitudinal direction of a long plate curved in the width direction.
And the mounting holes (3) and (3) are formed near both ends of the sheath plate. (4), (4) are located on the lower surface of the sheath plate (1), and the receiving ribs (2),
The outer edge is engaged with (2), and the inner edge (4) a,
(4) A pair of actuating plates (4), (4), each of which is composed of a pair of long elastic plates in which a is flexibly joined.
A plurality of lower ends of a pair of binding rods (5), (5) having an arc shape along the longitudinal direction are planted in an upright shape, respectively, and the pair of binding rods (5), (5) Is the sheath plate (1)
Of the pair of actuating plates (4) and (4) while projecting above the sheath plate (1) through the notch holes (6) and (6) provided in the left and right side edges in the longitudinal direction of the plate, respectively. When bent in a valley fold, the tips are joined together to form a pair of operating plates (4),
It is opened when (4) is bent into a mountain fold. The inner edges (4) a of the actuating plates (4) and (4) are symmetrically cut at the inner edge joints of both ends of the actuating plates (4) and (4) to form a rectangular engaging recess ( 7) is formed, and a mountain-shaped protrusion (8) bulging inward is provided at each intermediate position of the opposite side edges (7) a. (9) extends downward from the mounting hole (3), penetrates the inner edge joint of the pair of actuating plates (4), (4), and is fastened to, for example, a cover having a flange at its lower end. The ring fitting body A is constituted by the above with the mounting pipe for.

B indicates an end member that is fitted and locked to both ends of the ring fitting body A, and this end member B is, as shown in FIG.
On both side edges of the short bottom piece (10), sliding contact pieces (11), (11) having a V-shaped cross-section, which are in sliding contact with the receiving ribs (2), (2) of the sheath plate (1) in the longitudinal direction, Also, a fitting piece (13) is provided with a vertical piece (12) at each outer end so as to close it.
And has a finger rest (14) in the upper part, is tilted forward in the lower part, and is then bent backward, and the bent part is movable in the engaging concave hole (7) and has a lateral width. The protrusion (8)
Narrower than the opposite width, preferably with a narrow cross-section having a U-shape, and an action portion (16) that pushes up the operating plates (4) and (4) from the lower surface and bends into a mountain fold. ) And a lever piece (17) which are connected to each other, and the lever piece (1
7) is formed by supporting (13) 'intermediate portions of both side edges so as to be vertically tiltable at a position above the vertical piece (12). At both ends, sliding contact pieces (1
1) and (11) are superposed, and a pair of operating plates (4),
The bottom piece (10) covers the lower surface of (4) and the action part (16)
Are fitted so as to engage with both side edges (7) a, (7) a of the engaging recessed hole (7), and further, these are locked by a locking means, whereby the ring fitting of the present application is constructed. To be done.

As the locking means, as shown in FIG. 6, an outer surface is formed by, for example, pressing, so that the ends of the receiving ribs (2) and (2) are inclined in the fitting direction of the fitting part (13). When the fitting portion piece (13) is sufficiently fitted to the protruding portion (18) and the sliding contact pieces (11) and (11), the protruding portion is formed. When the locking holes (19) for locking the cut edges of (18) are provided respectively, or as shown in FIG. 7, the locking holes (19) are formed at the ends of the receiving ribs (2), (2). 19), (19), and also the sliding contact pieces (11), (11), locking pieces which can be cut and raised in a direction orthogonal to the fitting direction of the fitting part piece (13) by a kerf. (20), (20) may be provided respectively,
In the former case, the fitting portion piece (13) is strongly pressed from the end portion of the sheath plate (1), so that the protruding portion (18) and the locking hole (19).
And automatically lock, and in the latter, after the fitting part piece (13) is fitted and inserted into the end of the sheath plate (1), the locking piece (20) is pressed inward from the outside. Then, it is locked by being bent. The ring fitting of the present application configured in this way is
It is attached to the inner surface of the cover sheet by a retaining rod via a mounting tube (9). In addition, (21) is a window hole for the action part (16) opened in the bottom piece (10), and (22) is the standing state of the lever piece (17),
The lower end is a protrusion provided on the bottom piece (10) so that it does not come into contact with the inner surface of the cover with the ring fitting attached.

When a document or the like is bound, the pair of actuating plates (4) and (4) are bent in a valley fold shape as shown by the solid lines in FIGS. (5) and (5) are closed, and the neck portion (15) of the lever piece (17) rides over the protrusion (8) and is positioned at the outermost end of the engaging recess hole (7). , The lever piece (17) is placed in an upright state, and when the lever piece (17) is pressed outwardly through the finger rest (14) from this state, the lever piece (17) becomes a sheath plate (1). ) And the support part (13) 'as a fulcrum, and the protrusions (8) and (8) are pushed so that the neck part (15) pushes the left and right actuating plates (4) and (4) at the time of this tilt. Forcibly overcome it,
As shown by the phantom line (b) in FIG. 4, it is located in the inner end direction of the engaging recessed hole (7). Next, when the finger rest (14) is further strongly pressed from this state, the pair of actuating plates (4), (4) are pushed up from the lower surface by the acting part (16), and the pair of actuating plates (4) are pushed. , (4) are bent in a mountain fold shape, the pair of binding rods (5), (5) are opened, and the lever piece (17) is at the fourth position as shown by the phantom line in FIG.
It falls over as shown by the imaginary line (a).

Therefore, in this state, documents and the like are bound on the binding rods (5) and (5).

Also, as shown by the phantom line in FIG. 2, from the state in which the pair of binding rods (5), (5) are opened, press the binding rods (5), (5) in the direction in which they are closed with a finger. To do.

Then, the inner edge joints of the pair of actuating plates (4) and (4) are bent in a valley fold shape, and as shown by the solid line in FIG. 2, the pair of binding rods (5) and (5) are closed and The lever piece (17) tilts in the upright direction due to the bending action of the pair of actuating plates (4), (4), but the neck portion (15) has a protrusion as shown by the phantom line (b) in FIG. It is placed in a position that does not exceed (8). Next, when the finger rest (14) of the lever piece (17) is strongly pressed inward from this state, the neck (15) forcibly rides over the protrusion (8) and reaches the most of the engaging recess (7). An operation in which the finger rest (14) is in an upright state and the upper edge of the neck (15) is bent in a valley fold shape while being located near the outer end, as shown by the solid line in FIG. Suppress the upper surface of the plates (4), (4).

Therefore, in the above, for example, even if the pair of operating plates (4) and (4) are bent in a mountain fold shape due to an impact when the document is mistakenly dropped while being bound in the ring fitting, In order for the operating plates (4) and (4) to bend in a mountain fold shape, the neck (15) must move over the protrusion (8) of the engaging recess (7) and move toward the inner end thereof. But not
Since the movement is restrained by the protrusion (8), the upper edge of the neck (15) still keeps restraining the upper surfaces of the operating plates (4), (4).

In the above embodiment, the ring fitting main body and the end member are separately provided, but the end member may be provided integrally with the ring fitting main body.

EFFECTS OF THE INVENTION As described above, according to the present application, the closed state of the pair of binding rods is held by the engaging action of the neck portion provided on the lever piece and the protrusion provided in the engaging recess hole of the operating plate. Since there is no possibility that the binding will unnecessarily open due to the impact force from the outside and the document will deviate as in the conventional structure, especially in the case of the structure in which the neck is formed in a U-shaped cross section, Since the cross-sections do not come into sliding contact with each other, the tilting operation of the lever piece becomes smooth, and it is rich in durability, and also has sliding contact pieces that slide-contact in the longitudinal direction of the receiving ribs of the sheath plate on both side edges of the bottom piece, Moreover, the lever piece is supported on the upper part of the vertical piece of the fitting portion piece having the vertical piece at the outer end portion so as to be vertically tiltable, and the fitting portion piece is inserted through the sliding contact piece. The structure in which the ribs are fitted to the receiving ribs of the sheath plate has advantages such as easy manufacture.

[Brief description of drawings]

The drawings show an embodiment of the present application. FIG. 1 is a plan view of the whole body with some parts omitted, and FIG. 2 is an enlarged cross-sectional view taken along the line II of FIG.
FIG. 3 is an enlarged plan view of a partially cut-away end portion, FIG. 4 is an enlarged vertical side view of the end portion, and FIG. 5 is a perspective view of an end member.
FIG. 7 is a partial cross-sectional view showing the locking means, FIG. 8 is a plan view in which the ring fitting main body and the end member are disassembled and partially cut away, and FIG. 9 is a cross section showing the engagement state between the protrusion and the neck. It is a side view. In the figure, (1) sheath plate, (2) receiving rib, (4) action plate,
(5) is a binding rod, (6) is a notch hole, (7) is an engaging concave hole,
(7) a is a side edge, (8) is a protrusion, (10) is a bottom piece, (11)
Is a sliding contact piece, (12) is a vertical piece, (15) is a neck, (16) is a working portion, and (17) is a lever piece.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 59-79379 (JP, U) Rikai 61-18880 (JP, U) Rikai 51-2320 (JP, U)

Claims (3)

[Claims] 1. A pair of receiving ribs of a sheathing plate each having receiving ribs bent inward and downward at both side edges along the longitudinal direction, the inner edges of which are bendably joined in a valley fold and a mountain fold. Of the elongate working plates, and a pair of arc-shaped binding rods respectively planted in the pair of working plates are inserted into the sheath plates through notch holes provided on both side edges of the sheath plate. Protruding above the
The distal ends of the pair of binding rods can be opened and closed by the bending action of the valley fold and the mountain fold of the pair of actuation plates, and the inner edge is cut at both ends of the inner edge joint portion of the actuation plates to engage the engagement recess holes. In addition, at the opposite side edges of the engaging recesses, inwardly projecting protrusions are provided, at both end positions of the sheath plate, finger contact portions are provided on the upper side and inside the engaging recesses are provided on the lower side. A neck portion that is movable and is larger than the opposing width of the protrusion and that can forcibly climb over the protrusion during movement, and a working portion that pushes up the operating plate from the lower surface and bends in a mountain fold. A metal fitting characterized in that the installed lever part is attached so that it can be tilted vertically. 2. The ring fitting according to claim 1, wherein the neck portion has a U-shaped cross section. 3. A vertical piece of a fitting portion piece, which has sliding contact pieces which are slidably contacted in the longitudinal direction of the receiving ribs of the sheath plate on both side edges of the bottom piece, and which has vertical pieces at the outer ends thereof. 3. A lever piece is supported on the upper part of the table so as to be vertically tiltable, and the fitting piece is fitted to a receiving rib of the sheath plate via a sliding contact piece. Ring fittings.