JP7389530B1 - ring binding device - Google Patents

Abstract

An object of the present invention is to provide a ring-type binding device that can reduce the possibility that a pair of substrates will separate from each other.
[Solution] The ring type binding tool according to the present invention has an engaging claw 40 protruding from the outer surface of at least one of a plurality of shaft supports 4 on at least one of a pair of base plates 1 and 2. , 2 is provided with an engaging portion 41 to which an engaging claw 40 is engaged. By being rotated, the engaging part 40 crosses over the engaging part 41 from the first side S1 to the second side S2, and the engaging part 41 has the pair of substrates 1 and 2 in the opening direction. When it is rotated, it engages with the engaging claw 40 and prevents the engaging claw 40 from getting over the engaging portion 41 from the second side S2 to the first side S1.
[Selection diagram] Figure 1

Description

The present invention relates to a ring-type binding device in which a pair of substrates are connected to each other via a shaft portion.

As this type of ring-type binding device that has been conventionally used, for example, a ring-type binding device shown in Patent Document 1 below can be mentioned. Patent Document 1 describes a binding tool that includes a pair of substrates (a first base and a second base) that are arranged parallel to each other and adjacent to each other. One of the substrates is provided with shaft supports (bearing portions) near one end, near the other end, and near the center. The other substrate has a shaft portion (shaft portion) extending along the longitudinal direction of the other substrate. One substrate is attached to the other substrate with the shaft portion being supported by bearings at each shaft support. A pair of substrates is rotatably provided in the circumferential direction of the shaft portion, and half-ring portions (half-ring portions) provided on these substrates are opened and closed by rotation of the pair of substrates.

JP 2021-37669 Publication

In the conventional configuration as described in Patent Document 1, a pair of substrates is rotatably provided in the circumferential direction of the shaft portion. If these pair of substrates rotate excessively, the pair of substrates may be separated from each other.

The present invention has been made to solve the above-mentioned problems, and one of the objects thereof is to provide a ring-type binding tool that can reduce the possibility that a pair of substrates will separate from each other.

In one embodiment, the ring-type binding tool according to the present invention includes a pair of substrates that extend parallel to each other, and a plurality of substrates that are provided integrally with the pair of substrates, and that extend toward the surface side of the pair of substrates. A half-ring portion and a plurality of shaft supports that are provided integrally with at least one of the pair of substrates and extend to the back side of at least one of the pair of substrates, and the shaft portion extends parallel to the pair of substrates. By gripping the pair of substrates, the pair of substrates are connected to each other via the shaft portion, and the pair of substrates can be rotated in the circumferential direction of the shaft portion. A ring-type binding tool, which includes a closing direction in which the ends of each of the half-ring parts of the plurality of half-ring parts are brought close to each other, and an opening direction in which the ends of each of the plurality of half-ring parts are spaced apart from each other, At least one of the plurality of shaft supports has an engaging pawl protruding from an outer surface of at least one of the plurality of shaft supports, and at least the other of the pair of substrates is provided with an engaging portion with which the engaging pawl is engaged; The engaging claw crosses over the engaging portion from the first side to the second side of the engaging portion when the pair of substrates is rotated in the closing direction when assembling the ring type binding tool, The engaging portion engages with the engaging claw when the pair of substrates is rotated in the opening direction, and prevents the engaging claw from getting over the engaging portion from the second side to the first side. do.

According to one embodiment of the ring-type binding tool of the present invention, the engaging claw is moved from the first side of the engaging portion by rotating the pair of substrates in the closing direction when assembling the ring-type binding tool. The engaging portion passes over the engaging portion toward the second side, and the engaging portion engages with the engaging claw when the pair of substrates is rotated in the opening direction, and the engaging claw moves toward the second side. Since the first side is restricted from getting over the engaging portion, it is possible to reduce the possibility that the pair of substrates will separate from each other.

It is a front view showing a ring-type binding tool according to Embodiment 1 of the present invention. FIG. 2 is a plan view showing the ring-type binding tool of FIG. 1. FIG. FIG. 2 is a bottom view showing the ring-type binding tool of FIG. 1. FIG. It is the left side surface which shows the ring type binding tool of FIG. FIG. 2 is a right side view showing the ring-type binding tool of FIG. 1. FIG. FIG. 2 is a perspective view of the ring-type binding tool of FIG. 1 in a closed state, as viewed diagonally from above. FIG. 7 is a perspective view of the ring-type binding device of FIG. 6 when the closed state is reversed. FIG. 2 is a perspective view of the ring-type binding tool of FIG. 1 in an open state, as viewed diagonally from above. FIG. 9 is a perspective view of the ring-type binding device of FIG. 8 when the closed state is reversed. It is a top view which shows a pair of board|substrate of FIG. 1 in the state before assembly of a ring type binding tool. 11 is a cross-sectional view of the pair of substrates taken along line XI-XI in FIG. 10. FIG. FIG. 12 is an explanatory diagram showing a state in which the pair of substrates has been rotated in the closing direction from the state shown in FIG. 11; 13 is an enlarged view showing an enlarged area XIII of FIG. 12. FIG. 13 is an explanatory diagram showing a state in which the pair of substrates is further rotated in the closing direction from the state shown in FIG. 12. FIG. 15 is an enlarged view showing an enlarged area XV of FIG. 14. FIG. FIG. 9 is a perspective view showing one (first substrate) of the pair of substrates in FIG. 8; FIG. 17 is a perspective view of one of the pair of substrates in FIG. 16 (the first substrate) when viewed with the front and back reversed; 9 is a perspective view showing the other (second substrate) of the pair of substrates in FIG. 8. FIG. FIG. 18 is a perspective view of the other of the pair of substrates in FIG. 18 (second substrate) when viewed with the front and back reversed; FIG. 19 is a perspective view of the tip of the first half-ring portion of FIG. 18; FIG. 19 is a perspective view of the tip of the second half-ring portion of FIG. 18; FIG. 17 is a perspective view of the tip of the third half-ring portion of FIG. 16; It is a perspective view when the ring-type binding tool according to Embodiment 2 of the present invention is viewed diagonally from above. FIG. 24 is a perspective view of the ring-type binding device of FIG. 23 when viewed in a closed state with the front and back reversed; 24 is a perspective view showing one of the pair of substrates (first substrate) of FIG. 23. FIG. FIG. 26 is a perspective view of one of the pair of substrates in FIG. 25 (first substrate) when viewed with the front and back reversed; 24 is a perspective view showing the other (second substrate) of the pair of substrates in FIG. 23. FIG. FIG. 28 is a perspective view of the other of the pair of substrates in FIG. 27 (second substrate) when viewed with the front and back reversed; FIG. 24 is a front view showing an engaging pawl provided on the shaft support of FIG. 23; FIG. 24 is a front view showing an engaging portion with which the engaging claw of FIG. 23 is engaged. 31 is a rear view showing the engaging portion of FIG. 30. FIG. FIG. 31 is a perspective view of the engaging portion of FIG. 30 when viewed diagonally from above and to the left. FIG. 31 is a perspective view of the engaging portion of FIG. 30 when viewed diagonally from above and to the right. FIG. 24 is a plan view showing the pair of substrates in FIG. 23 in a state before the ring-type binding tool is assembled. 35 is an enlarged view showing an enlarged area XXXV in FIG. 34. FIG. 35 is an explanatory diagram showing a state in which the pair of substrates has been rotated in the closing direction from the state shown in FIG. 34. FIG. 37 is an enlarged view showing an enlarged area XXXVII of FIG. 36. FIG. 37 is an explanatory diagram showing a state in which the pair of substrates is further rotated in the closing direction from the state shown in FIG. 36. FIG. 39 is a cross-sectional view taken along line XXXIX in FIG. 38. FIG. 40 is an enlarged view showing a region XL in FIG. 39; FIG.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated with reference to drawings. The present invention is not limited to each embodiment, and can be embodied by modifying the constituent elements without departing from the gist thereof. Moreover, various inventions can be formed by appropriately combining a plurality of components disclosed in each embodiment. For example, some components may be deleted from all the components shown in the embodiments. Furthermore, components of different embodiments may be combined as appropriate.

Embodiment 1.
1 is a front view showing the ring type binding device according to Embodiment 1 of the present invention, FIG. 2 is a plan view showing the ring type binding device in FIG. 1, and FIG. 3 is a front view showing the ring type binding device in FIG. 1. FIG. 4 is a left side view of the ring type binding tool of FIG. 1, and FIG. 5 is a right side view of the ring type binding device of FIG. 1. 6 is a perspective view of the ring-type binding device shown in FIG. 1 in the closed state when viewed diagonally from above, and FIG. 7 is a perspective view of the ring-type binding device shown in FIG. 6 when the closed state is reversed. FIG. 8 is a perspective view of the ring-type binding device in FIG. 1 in the open state as seen diagonally from above, and FIG. 9 is a perspective view of the ring-type binding device in FIG. 8 in the closed state with the front and back reversed. FIG. Note that the rear view of the ring-type binding tool appears symmetrical to the front view.

The ring binding device shown in FIGS. 1 to 9 is a device for binding a plurality of sheets of paper, such as loose-leaf paper, each having a plurality of holes. As shown in FIGS. 1 to 9, the ring-type binding tool includes a pair of base plates 1 and 2, a plurality of half-ring parts 3, and a plurality of pivot supports 4.

A pair of substrates 1 and 2 are adjacent to each other and extend in parallel. The direction in which the pair of substrates 1 and 2 extend is sometimes referred to as a longitudinal direction D1. When referring to the pair of substrates 1 and 2 individually, one of the pair of substrates 1 and 2 may be referred to as the first substrate 1, and the other may be referred to as the second substrate 2.

The plurality of half-ring portions 3 are provided integrally with the pair of substrates 1 and 2, respectively, and extend toward the front surfaces of the pair of substrates 1 and 2. The plurality of half-ring portions 3 are spaced apart from each other in the longitudinal direction D1 on each of the pair of substrates 1 and 2. The half-ring portion 3 provided on the first substrate 1 is arranged to face the half-ring portion 3 provided on the second substrate 2. The number of half-ring portions 3 provided on each of the pair of substrates 1 and 2 is the same. The number of half-ring portions 3 can be arbitrarily changed depending on the lengths of the substrates 1 and 2, and may be an even number or an odd number. In the ring type binding tool of this embodiment, five half-ring portions 3 are provided on each of the pair of substrates 1 and 2.

The plurality of shaft supports 4 are provided integrally with at least one of the pair of substrates 1 and 2, and extend to the back surface side of at least one of the pair of substrates 1 and 2. In other words, the pivot support 4 is provided on the opposite side of the half-ring portion 3 with respect to the front-back direction D2 (see FIG. 1) of the pair of substrates 1 and 2.

In the ring type binding tool of this embodiment, the pair of substrates 1 and 2 are connected to each other via the shaft portion 5 by the pivot support 4 gripping the shaft portion 5 extending parallel to the pair of substrates 1 and 2. At the same time, the pair of substrates 1 and 2 are rotatable in the circumferential direction D3 of the shaft portion 5 (see FIG. 6, etc.).

The shaft portion 5 may be a rod-shaped portion or member extending in the longitudinal direction D1. The shaft portion 5 may be separate from the pair of substrates 1 and 2, or may be provided integrally with the pair of substrates 1 and 2. As will be explained later with reference to the drawings, the shaft portion 5 of this embodiment is provided integrally with the first substrate 1 in some regions in the longitudinal direction D1, and in other regions in the longitudinal direction D1. In this region, it is provided integrally with the second substrate 2 (see FIGS. 16 to 19). The shaft part 4 of the second board 2 grips the shaft part 5 of the first board 1 in a part of the region in the longitudinal direction D1, and the shaft part 4 of the first board 1 grips the shaft part 5 of the first board 1 in the other region in the longitudinal direction D1. grips the shaft portion 5 of the second substrate 2.

By rotating the pair of substrates 1 and 2, a closed state in which the tips of the plurality of half-ring parts 3 are brought close to each other as shown in FIGS. 6 and 7, and a closed state as shown in FIGS. 8 and 9. It is possible to switch between an open state in which the tips of the plurality of half-ring parts 3 are spaced apart from each other. That is, the direction of rotation of the pair of substrates 1 and 2 includes a closing direction in which the respective tips of the plurality of half-ring parts 3 are brought close to each other, and an opening direction in which the respective tips of the plurality of half-ring parts 3 are separated from each other. and are included.

Next, FIG. 10 is a plan view showing the pair of substrates 1 and 2 of FIG. 1 in a state before assembly of the ring type binding tool, and FIG. FIG. Note that FIG. 10 is also an enlarged view of region X in FIG. 3 in a state before the ring-type binding tool is assembled and the orientation thereof is changed.
12 is an explanatory view showing a state in which the pair of substrates 1 and 2 are rotated in the closing direction from the state shown in FIG. 11, and FIG. 13 is an enlarged view showing region XIII in FIG. 12.
Furthermore, FIG. 14 is an explanatory view showing a state in which the pair of substrates 1 and 2 are further rotated in the closing direction from the state shown in FIG. 12, and FIG. 15 is an enlarged view showing region XV in FIG. 14. .

As shown in FIGS. 10 and 11, an engaging pawl 40 protrudes from the outer surface of at least one of the plurality of shaft supports 4 in at least one of the pair of substrates 1 and 2. As shown in FIGS. At least the other of the pair of substrates 1 and 2 is provided with an engaging portion 41 to which an engaging claw 40 is engaged. Although FIGS. 10 and 11 show that the engaging claw 40 is provided on the shaft support 4 of the first board 1, for example, the engaging claw 40 shown on the right side of the paper in FIGS. It is provided on the shaft support 4 of No. 2.

As shown in FIGS. 10 to 15, a pair of substrates 1 and 2 are rotated in the closing direction when assembling the ring-type binding tool. At this time, as shown in FIGS. 13 and 15 in particular, the engaging claw 40 is moved from the first side S1 of the engaging portion 41 to the second side by rotating the pair of substrates 1 in the closing direction. It crosses over the engaging portion 41 toward the side S2. In particular, as shown in FIG. 15, the engaging portion 41 engages with the engaging claw 40 when the pair of substrates 1 and 2 are rotated in the opening direction, and the engaging claw 40 is on the second side. It is restricted from getting over the engaging portion 41 from the side S2 to the first side S1.

If the engaging claw 40 were omitted and the state shown in FIGS. 14 and 15 could be easily returned to the state shown in FIG. 11, the pair of substrates 1 and 2 would be unintentionally separated. On the other hand, in the ring type binding tool of the present embodiment, when the pair of substrates 1 and 2 are rotated in the opening direction, the engaging portion 41 engages with the engaging claw 40, and the engaging claw 40 is restricted from climbing over the engaging portion 41 from the second side S2 to the first side S1, so it is possible to reduce the possibility that the pair of substrates 1 and 2 will separate from each other.

The shaft support 4 from which the engaging claw 40 is projected may be a C-shaped projection extending in the circumferential direction D3 of the shaft portion 5. By disposing the shaft portion 5 inside the pivot support 4, the pivot support 4 may grip the shaft portion 5. As shown in particular in FIG. 13, the radius of curvature of the inner peripheral surface 4a of the shaft support 4 from which the engaging claw 40 is protruded may be larger than the radius of curvature of the outer peripheral surface 5a of the shaft portion 5, and A gap may be provided between the surface 4a and the outer peripheral surface 5a of the shaft portion 5.

The engagement claw 40 of this embodiment projects from the outer circumferential surface 4b of the shaft support 4 in the radial direction of the shaft portion 5. As particularly shown in FIG. 13, the engagement pawl 40 may be formed such that the amount of protrusion from the outer circumferential surface 4b increases from the distal end 4c side of the shaft support 4 toward the proximal end 4d side (root side). In other words, the engaging claw 40 may be tapered from the base end 4d side of the shaft support 4 toward the distal end 4c side. The engagement claw 40 may have an end surface 40a (see FIG. 15) that is disposed on the base end 4d side and extends in the radial direction of the shaft portion 5.

As particularly shown in FIG. 13, the inner circumferential surface 4a of the shaft portion 4 is provided with a deflection groove 42, and the wall thickness of the shaft portion 4 at the position of the deflection groove 42 is determined by the deflection with respect to the circumferential direction D3 of the shaft portion 5. It may be made thinner than the wall thickness of the shaft support 4 at a position adjacent to the groove 42. By providing the bending groove 42 on the inner circumferential surface 4a of the shaft support 4, the shaft support 4 can be easily bent at the position of the bending groove 42, and the shaft support 4 can be easily bent from the first side S1 to the second side S2. Thus, the engaging claw 40 can more easily get over the engaging portion 41. The bending groove 42 may be formed over the entire width of the shaft support 4 in which the bending groove 42 is provided.

The pair of substrates 1 and 2 have inner surfaces 10 (see FIG. 11) that face each other when the pair of substrates 1 and 2 are rotated in the closing direction, and an outer surface 11 located outside the inner surface 10 (see FIG. 11) may be provided, and the engaging portion 41 may have an engaging groove 410 formed in the outer surface 11 on the other back surface side of the pair of substrates 1 and 2 (see 410 is also clearly visible in FIG. 9). As shown in FIGS. 13 and 15, the engagement groove 410 may have a bottom surface 410a located on the second side S2 and against which the engagement claw 40 is abutted, and the bottom surface 410a may have a bottom surface 410a with respect to the longitudinal direction D1. It is arranged at a position closer to the inner surface 10 than the outer surface 11 at a position adjacent to the engagement groove 410 . In other words, the thickness of the other of the pair of substrates 1, 2 at the position of the engagement groove 410 is thinner than the thickness of the other of the pair of substrates 1, 2 at a position adjacent to the engagement groove 410 in the longitudinal direction D1. has been done. Such an engagement groove 410 allows the engagement claw 40 to more easily get over the engagement portion 41 from the first side S1 to the second side S2.

As shown in FIG. 15, the engaging portion 41 may have a chamfered portion 411 in which a corner portion on the back side of the inner surface 10 is chamfered. The chamfered portion 411 is arranged on the first side S1 side. The chamfered portion 411 may be an R surface as in the illustrated embodiment, or may be a C surface (sloped surface). Such a chamfered portion 411 allows the engaging claw 40 to more easily get over the engaging portion 41 from the first side S1 to the second side S2.

Next, FIG. 16 is a perspective view showing one of the pair of substrates 1 and 2 in FIG. 8 (the first substrate 1), and FIG. 17 is a perspective view showing one of the pair of substrates 1 and 2 in FIG. FIG. 18 is a perspective view showing the other of the pair of substrates 1 and 2 in FIG. 8 (second substrate 2), and FIG. FIG. 18 is a perspective view of the other of the pair of substrates 1 and 2 in FIG. 18 (second substrate 2) when viewed with the front and back reversed.

Although the pair of substrates 1 and 2 may have mutually different shapes, in the ring type binding tool of this embodiment, the substrates 1 and 2 have the same shape. The substrates 1 , 2 include a half-ring portion 3 , a plurality of pivot supports 4 and a shaft portion 5 . The substrates 1 and 2 may have a line-symmetrical shape at the center in the longitudinal direction D1, and may be reversed with respect to the longitudinal direction D1 and arranged to face each other.

The shaft portion 5 of this embodiment is provided integrally with the first substrate 1 in a part of the region in the longitudinal direction D1 (the region on the back side of the paper in FIGS. 16 to 19); The other regions (regions on the front side of the paper in FIGS. 16 to 19) are provided integrally with the second substrate 2. The shaft part 4 of the second board 2 grips the shaft part 5 of the first board 1 in a part of the region in the longitudinal direction D1, and the shaft part 4 of the first board 1 grips the shaft part 5 of the first board 1 in the other region in the longitudinal direction D1. can grip the shaft portion 5 of the second substrate 2.

The shaft support 4 may include a plurality of gripping shaft supports 400 for gripping the shaft portion 5 and a plurality of fixed shaft supports 401 provided integrally with the shaft portion 5.

The plurality of grip shaft supports 400 are each formed in a C-shape, and are spaced apart from each other in the longitudinal direction D1. Although the number of gripping shaft supports 400 is arbitrary, an odd number of gripping shaft supports 400 may be provided. The above-mentioned engaging claw 40 may be provided on the gripping shaft support 400. Although the engaging claws 40 may be provided on all the gripping shaft supports 400, in this embodiment, they are provided on some of the gripping shaft supports 400. The plurality of gripping shaft supports 400 may include a first gripping shaft support 400a provided with the engaging claw 40 and a second gripping shaft support 400b not provided with the engaging claw 40. In the illustrated embodiment, among the odd number of gripping shaft supports 400, the gripping shaft support 400 arranged at the center in the longitudinal direction D1 is the first gripping shaft support 400a, and the other gripping shaft supports 400 are the second gripping shaft supports. It is said to be 400b.

An auxiliary shaft support 420 may be provided on the side of the second grip shaft support 400b where the engaging claw 40 is not provided. The second gripping shaft support 400b may be a C-shaped portion extending toward one side of the substrates 1 and 2 in the width direction D5, and the auxiliary shaft support 420 extends toward the other side of the substrates 1 and 2 in the width direction D5. It may be a C-shaped portion that extends from one side to the other. By providing the auxiliary shaft support 420, the shaft portion 5 can be gripped over a wider area in the circumferential direction D3 of the shaft portion 5.

The plurality of fixed shaft supports 401 support the shaft portion 5 at a position away from the back surfaces of the substrates 1 and 2. The shaft part 5 may have a plurality of partial shafts 50 with fixed axle supports 401 arranged at both ends. The plurality of gripping shaft supports 400 and auxiliary shaft supports 420 described above may grip each of the partial shafts 50. The plurality of partial shafts 50 are gripped by a first partial shaft 501 that is gripped by a first gripping shaft support 400a provided with an engaging claw 40, and a second gripping shaft support 400b that is not provided with an engaging claw 40. A second partial shaft 502 may be included. The diameter of the first partial shaft 501 may be smaller than the diameter of the second gripping shaft support 400b. Since the diameter of the first partial shaft 501 is small, a gap can be more reliably provided between the inner circumferential surface of the first gripping shaft support 400a and the outer circumferential surface of the first partial shaft 501. By providing such a gap, the first gripping shaft support 400a can be more reliably bent, and the engaging claw 40 can more easily get over the engaging portion 41.

Next, with further reference to FIGS. 20 to 22, the half ring portion 3 will be described. 20 is a perspective view showing the tip of the first half-ring portion 31 in FIG. 18, FIG. 21 is a perspective view showing the tip of the second half-ring portion 32 in FIG. FIG. 3 is a perspective view showing the tip of the half-ring portion 33;

Although the shapes of the tips of the plurality of half-ring parts 3 are arbitrary, the plurality of half-ring parts 3 may have the first to third tip shapes shown in FIGS. 20 to 22.

First, the common features of the first to third tip shapes will be explained. The tip of the half-ring portion 3 may have a tapered wedge-shaped section 300 and a lower plate 301 arranged adjacent to the root of the wedge-shaped section 300. As shown in FIGS. 6 and 7, in the closed state where the tip of the half-ring portion 3 of the first substrate 1 and the tip of the half-ring portion 3 of the second substrate 2 are close to each other, the half-ring of the first substrate 1 The wedge-shaped part 300 of the part 3 and the wedge-shaped part 300 of the half-ring part 3 of the second substrate 2 are adjacent to each other. At this time, the tip of the wedge-shaped portion 300 of the half-ring portion 3 of the first substrate 1 rests on the lower plate 301 of the half-ring portion 3 of the second substrate 2, and the wedge-shaped portion of the half-ring portion 3 of the second substrate 2 The tip of 300 rests on the lower plate 301 of the half-ring part 3 of the first substrate 1 .

The tips of at least one of the plurality of half-ring parts 3 may be provided with tip claws 302 that engage with each other when the tips are brought close to each other.

The plurality of half-ring parts 3 include a first half-ring part 31 having a first tip shape shown in FIG. 20, a second half-ring part 32 having a second tip shape shown in FIG. 21, and a third half-ring part 32 having a second tip shape shown in FIG. and a third half-ring portion 33 having a tip shape.

The first half-ring portion 31 shown in FIG. 20 has a concave portion 301a and a convex portion 301b in the lower plate 301. The second half-ring portion 32 shown in FIG. 21 has a wedge-shaped portion 300 with a concave portion 300a and a convex portion 300b. In the closed state, the convex portion 300b and concave portion 300a of the second half-ring portion 32 engage with the concave portion 301a and convex portion 301b of the first half-ring portion 31, and the tip of the first half-ring portion 31 and the second half-ring The tips of the portions 32 are prevented from separating from each other. That is, these concave portions 300a, 301a and convex portions 300b, 301b constitute the above-mentioned tip claw 302.

The third half-ring portion 33 shown in FIG. 22 does not have these recesses 300a, 301a and protrusions 300b, 301b at its tip.

As particularly shown in FIGS. 16 to 19, each of the pair of substrates 1 and 2 is provided with an odd number of half-ring portions 3 arranged side by side in the longitudinal direction D1 of the substrates 1 and 2. The half ring portion 3 disposed at the center position in the longitudinal direction D1 of the rings 1 and 2 does not need to be provided with the tip claw 302. That is, the half-ring portion 3 disposed at the center position may be the third half-ring portion 33 without the recesses 300a, 301a and the protrusions 300b, 301b. As in this embodiment, when the first substrate 1 and the second substrate 2 have the same shape and are reversed in the longitudinal direction D1 and arranged to face each other, they do not have the tip claw 302 at the center. By arranging the third half-ring portion 33, interference of the tip claw 302 can be prevented.

The first half-ring portion 31, the second half-ring portion 32, and the third half-ring portion 33 may be arranged symmetrically about the center in the longitudinal direction D1 of the substrates 1 and 2. As shown in FIG. 16, the third half-ring part 33 is arranged at the center position in the longitudinal direction D1, the first half-ring part 31 is arranged on the back side of the paper in FIG. Two and a half ring portions 32 are arranged.

As particularly shown in FIG. 16, the first half-ring portion 31 and the second half-ring portion 32 have a wedge-shaped portion 300 disposed on one end side in the longitudinal direction D1, while the third half-ring portion 33 In this case, a wedge-shaped portion 300 is arranged on the other end side in the longitudinal direction D1. That is, in the first half-ring part 31, the second half-ring part 32, and the third half-ring part 33, the arrangement of the wedge-shaped part 300 and the lower plate 301 is reversed with respect to the longitudinal direction D1. By reversing the arrangement of the wedge-shaped portion 300 and the lower plate 301 in this manner, relative displacement in the longitudinal direction D1 of the half-ring portion 3 in each of the substrates 1 and 2 can be suppressed in the closed state.

Embodiment 2.
FIG. 23 is a perspective view of the ring type binding device according to Embodiment 2 of the present invention when viewed diagonally from above, and FIG. 24 is a perspective view of the ring type binding device of FIG. 23 when the closed state is reversed. FIG.
25 is a perspective view showing one of the pair of substrates 1 and 2 in FIG. 23 (the first substrate 1), and FIG. 26 is a perspective view showing one of the pair of substrates 1 and 2 in FIG. 27 is a perspective view showing the other of the pair of substrates 1 and 2 in FIG. 23 (second substrate 2), and FIG. 28 is a perspective view showing the other of the pair of substrates 1 and 2 in FIG. FIG. 3 is a perspective view of the other of the pair of substrates 1 and 2 (second substrate 2) when viewed with the front and back reversed.
FIG. 29 is a front view showing the engaging pawl 40 provided on the shaft support 4 of FIG. 23.
30 is a front view showing the engaging part 41 with which the engaging claw 40 of FIG. 23 is engaged, FIG. 31 is a rear view showing the engaging part 41 of FIG. 30, and FIG. 33 is a perspective view of the engaging portion 41 of FIG. 30 as viewed diagonally from above and to the left. FIG.

In the first embodiment, the engaging pawl 40 was described as protruding from the outer circumferential surface 4b of the shaft support 4 in the radial direction of the shaft portion 5, but the shape or configuration of the engaging pawl 40 may be changed as desired. good. In the ring type binding device of the second embodiment, as particularly shown in FIG. 29, the engaging claw 40 projects from the side end surface 4e of the shaft support 4 in the longitudinal direction D1 of the substrates 1 and 2. .

As particularly shown in FIG. 29, the pivot support 4 may include a first pivot support 43 and a second pivot support 44 that are arranged side by side in the longitudinal direction D1, and the engagement claw 40 is connected to the first pivot support. 43 and a second engaging claw 40c that projects from the side end surface 4e of the second shaft support 44.

The first shaft support 43 and the second shaft support 44 may each be formed in a C-shape, and may be arranged apart from each other in the longitudinal direction D1. The first engagement claw 40b of the first shaft support 43 may protrude from the side end surface 4e on the side away from the second shaft support 44, and the second engagement claw 40c of the second shaft support 44 may protrude from the side end surface 4e of the second shaft support 44. It may protrude from the side end surface 4e on the side away from 43.

The first engaging claw 40b and the second engaging claw 40c protrude from the side end surface 4e by increasing amounts as they move from the tip 4c side of the first shaft support 43 and the second shaft support 44 toward the base end 4d side (root side). It is designed to increase. In other words, the first engagement claw 40b and the second engagement claw 40c may be tapered from the base end 4d side of the first shaft support 43 and the second shaft support 44 toward the distal end 4c side. The first engagement claw 40b and the second engagement claw 40c may have an end surface 40a that is disposed on the base end 4d side and extends in the longitudinal direction D1.

The side end surfaces 4e of the first pivot support 43 and the second pivot support 44 facing each other are provided with a notch 45 disposed at the base end 4d of each of the first pivot support 43 and the second pivot support 44. good. The width of the first shaft support 43 and the second shaft support 44 in the longitudinal direction D1 at the position of the notch 45 is the width of the first shaft support 43 and the second shaft support 44 at the position adjacent to the notch 45 in the extending direction of the first shaft support 43 and the second shaft support 44. The width may be narrower than the width of the support portion 43 and the second shaft support portion 44.

In the ring type binding device of the second embodiment, as particularly shown in FIGS. 30 to 33, the engaging portion 41 protrudes from the side end surface 4e of the shaft support 4 in the longitudinal direction D1 of the substrates 1 and 2. It is constituted by a protrusion 46 that has a shape.

The shaft support 4 provided with the protrusion 46 may be a pair of fixed shaft support 401 provided integrally with the shaft portion 5. The pair of fixed shaft supports 401 may be provided at both ends of one partial shaft 50 (the first partial shaft 501 gripped by the first grip shaft support 400a provided with the engaging claw 40). The protrusion 46 may be provided on the side end surfaces 4e of the pair of fixed shaft supports 401 on opposite sides. The protrusion 46 may be provided in a part of the fixed shaft support 401 in the circumferential direction, and may be arranged at a position close to the substrates 1 and 2.

Next, the relationship between the engaging claw 40 and the engaging portion 41 in the second embodiment will be described with reference to FIGS. 34 to 40. FIG. 34 is a plan view showing the pair of substrates 1 and 2 of FIG. 23 in a state before assembly of the ring-type binding tool, and FIG. 35 is an enlarged view showing area XXXV (35) in FIG. 34, FIG. 36 is an explanatory view showing a state in which the pair of substrates 1 and 2 are rotated in the closing direction from the state shown in FIG. 34, and FIG. 37 is an enlarged view showing region XXXVII (37) in FIG. 36. , FIG. 38 is an explanatory diagram showing a state in which the pair of substrates 1 and 2 are further rotated in the closing direction from the state in FIG. 36, and FIG. 39 is a sectional view taken along line XXXIX (39) in FIG. 38. FIG. 40 is an enlarged view showing the area XL (40) in FIG. 39.

As shown in FIGS. 34 to 40, the pair of substrates 1 and 2 are rotated in the closing direction when assembling the ring type binding tool. At this time, as shown in FIGS. 35 and 37, the first shaft support 43 and the second shaft support 44 have the first engagement claw 40b and the second engagement claw 40c pressed by the protrusion 46 of the engagement portion 41. As a result, the tips 4c of the first shaft support 43 and the second shaft support 44 move in the closing direction while being bent so as to approach each other. Since the notch 45 is provided in the first shaft support 43 and the second shaft support 44 as described above, the first shaft support 43 and the second shaft support 44 can be bent more easily. When the pair of substrates 1 and 2 are rotated in the closing direction, the first engagement claw 40b and the second engagement claw 40c move from the first side S1 of the engagement portion 41 to the first side S1 as shown in FIGS. 38 to 40. This is continued until the protrusion 46 of the engaging portion 41 is overcome in the second direction S2.

After the engaging claw 40 climbs over the protrusion 46 of the engaging portion 41 from the first side S1 to the second side S2 of the engaging portion 41, as shown in FIG. 40 in particular, the engaging portion 41 The projection 46 engages with the first engaging claw 40b and the second engaging claw 40c, and the first engaging claw 40b and the second engaging claw 40c move from the second side S2 to the first side S1. Climbing over the engaging portion 41 is restricted. The other configurations are the same as in the first embodiment.

Although preferred embodiments of the present invention have been described above in detail with reference to the accompanying drawings, the present invention is not limited to such examples. It is clear that a person with ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea stated in the claims. It is understood that these also naturally fall within the technical scope of the present invention.

For example, in the first and second embodiments, it has been described that the engaging claw 40 and the engaging portion 41 are provided on both of the pair of substrates 1 and 2, but the engaging claw 40 and the engaging portion 41 are provided only on one of the pair of substrates 1 and 2. may be provided, and the engaging portion 41 may be provided only on the other of the pair of substrates 1 and 2. Further, in the first and second embodiments, the pair of substrates 1 and 2 are described as having the same shape, but the pair of substrates 1 and 2 may have different shapes.

The invention described in this specification can also be described as follows.
[1]
a pair of substrates adjacent to each other and extending in parallel;
a plurality of half-ring portions that are each provided integrally with the pair of substrates and extend toward the front surface side of the pair of substrates;
a plurality of pivot supports provided integrally with at least one of the pair of substrates and extending to the back side of at least one of the pair of substrates;
The shaft support grips a shaft portion extending parallel to the pair of substrates, thereby connecting the pair of substrates to each other via the shaft portion and rotating the pair of substrates in the circumferential direction of the shaft portion. It is said that it is possible to move
The direction of rotation of the pair of substrates includes a closing direction in which the tips of each of the plurality of half-ring portions are brought close to each other, and an opening direction in which the tips of each of the plurality of half-ring portions are separated from each other. ing,
It is a ring type binding tool,
In at least one of the pair of substrates, an engaging claw protrudes from an outer surface of at least one of the plurality of shaft supports;
At least the other of the pair of substrates is provided with an engaging portion that is engaged with the engaging claw,
The engaging pawl is configured to engage the engaging portion from the first side to the second side of the engaging portion when the pair of substrates is rotated in the closing direction when assembling the ring type binding tool. It has overcome the division,
The engaging portion engages with the engaging claw when the pair of substrates is rotated in the opening direction, and the engaging claw moves from the second side to the first side. Regulates getting over the engaging part,
Ring binding.
[2]
The engagement claw projects from the outer circumferential surface of the shaft support in the radial direction of the shaft portion.
The ring-type binding device described in paragraph 1.
[3]
The engagement pawl is formed such that the amount of protrusion from the outer circumferential surface increases from the distal end side to the proximal end side of the shaft support.
The ring-type binding device described in Section 2.
[4]
A deflection groove is provided on the inner peripheral surface of the pivot support, and the wall thickness of the pivot support at the location of the deflection groove is equal to the thickness of the pivot support at a position adjacent to the deflection groove in the circumferential direction of the shaft portion. It is made thinner than the wall thickness,
The ring-type binding device described in Section 3.
[5]
The pair of substrates are provided with inner surfaces that face each other when the pair of substrates are rotated in the closing direction, and an outer surface located outside the inner surface,
The engagement portion has an engagement groove formed in the outer surface on the other back surface side of the pair of substrates.
The ring-type binding tool according to any one of items 2 to 4.
[6]
The engagement groove has a bottom surface that is located on the second side and is in contact with the engagement claw, and the bottom surface is located on the outer surface at a position adjacent to the engagement groove in the longitudinal direction of the substrate. is arranged at a position closer to the inner surface than the
The ring-type binding device according to item 5.
[7]
The thickness of the other of the pair of substrates at the position of the engagement groove is thinner than the thickness of the other of the pair of substrates at a position adjacent to the engagement groove in the longitudinal direction of the substrate.
The ring-type binding device according to item 5 or 6.
[8]
The engaging portion has a chamfered portion in which a corner portion on the back side of the inner surface is chamfered.
The ring-type binding tool according to any one of Items 5 to 7.
[9]
The engagement claw projects from a side end surface of the shaft support in the longitudinal direction of the substrate.
The ring-type binding device according to item 1.
[10]
The pivot support includes a first pivot support and a second pivot support that are arranged side by side in the longitudinal direction of the substrate,
The engagement claw includes a first engagement claw protruding from a side end surface of the first shaft support, and a second engagement claw protruding from a side end surface of the second shaft support.
The ring-type binding device according to item 9.
[11]
The first engaging pawl and the second engaging pawl are formed so that the amount of protrusion from the side end surface increases from the distal end side to the proximal end side of the first shaft support and the second shaft support,
The ring-type binding device according to item 10.
[12]
The engaging portion is constituted by a protrusion that protrudes from a side end surface of the shaft support in the longitudinal direction of the substrate.
The ring-type binding tool according to any one of items 9 to 11.
[13]
At least one tip of the plurality of half-ring portions is provided with a tip claw that engages with each other when the tips are brought close to each other.
The ring-type binding tool according to any one of Items 1 to 12.
[14]
Each of the pair of substrates is provided with an odd number of half-ring portions arranged side by side in the longitudinal direction of the substrate, and the half-ring portion arranged at the center position in the longitudinal direction of the substrate has a the tip claw is not provided;
The ring-type binding device according to item 13.

1, 2 : Substrate 3 : Half-ring part 4 : Axial support 5 : Shaft part 40 : Engagement claw 41 : Engagement part 42 : Deflection groove 43 : First axis support 44 : Second axis support 46 : Projection 302 : Tip nail

Claims (14)

a pair of substrates adjacent to each other and extending in parallel;
a plurality of half-ring portions that are each provided integrally with the pair of substrates and extend toward the front surface side of the pair of substrates;
a plurality of pivot supports provided integrally with at least one of the pair of substrates and extending to the back side of at least one of the pair of substrates;
The shaft support grips a shaft portion extending parallel to the pair of substrates, thereby connecting the pair of substrates to each other via the shaft portion and rotating the pair of substrates in the circumferential direction of the shaft portion. It is said that it is possible to move
The direction of rotation of the pair of substrates includes a closing direction in which the tips of each of the plurality of half-ring portions are brought close to each other, and an opening direction in which the tips of each of the plurality of half-ring portions are separated from each other. ing,
It is a ring type binding tool,
In at least one of the pair of substrates, an engaging claw protrudes from an outer surface of at least one of the plurality of shaft supports;
At least the other of the pair of substrates is provided with an engaging portion that is engaged with the engaging claw,
The engaging pawl is configured to engage the engaging portion from the first side to the second side of the engaging portion when the pair of substrates is rotated in the closing direction when assembling the ring type binding tool. It has overcome the division,
The engaging portion engages with the engaging claw when the pair of substrates is rotated in the opening direction, and the engaging claw moves from the second side to the first side. Regulates getting over the engaging part,
Ring binding. The engagement claw projects from the outer circumferential surface of the shaft support in the radial direction of the shaft portion.
The ring type binding tool according to claim 1. The engagement pawl is formed such that the amount of protrusion from the outer circumferential surface increases from the distal end side to the proximal end side of the shaft support.
The ring type binding tool according to claim 2. A deflection groove is provided on the inner peripheral surface of the pivot support, and the wall thickness of the pivot support at the location of the deflection groove is equal to the thickness of the pivot support at a position adjacent to the deflection groove in the circumferential direction of the shaft portion. It is made thinner than the wall thickness,
The ring type binding tool according to claim 3. The pair of substrates are provided with inner surfaces that face each other when the pair of substrates are rotated in the closing direction, and an outer surface located outside the inner surface,
The engagement portion has an engagement groove formed in the outer surface on the other back surface side of the pair of substrates.
The ring type binding tool according to any one of claims 2 to 4. The engagement groove has a bottom surface that is located on the second side and is in contact with the engagement claw, and the bottom surface is located on the outer surface at a position adjacent to the engagement groove in the longitudinal direction of the substrate. is arranged at a position closer to the inner surface than the
The ring type binding tool according to claim 5. The thickness of the other of the pair of substrates at the position of the engagement groove is thinner than the thickness of the other of the pair of substrates at a position adjacent to the engagement groove in the longitudinal direction of the substrate.
The ring type binding tool according to claim 5. The engaging portion has a chamfered portion in which a corner portion on the back side of the inner surface is chamfered.
The ring type binding tool according to claim 5. The engagement claw projects from a side end surface of the shaft support in the longitudinal direction of the substrate.
The ring type binding tool according to claim 1. The pivot support includes a first pivot support and a second pivot support that are arranged side by side in the longitudinal direction of the substrate,
The engagement claw includes a first engagement claw protruding from a side end surface of the first shaft support, and a second engagement claw protruding from a side end surface of the second shaft support.
The ring type binding tool according to claim 9. The first engaging pawl and the second engaging pawl are formed so that the amount of protrusion from the side end surface increases from the distal end side to the proximal end side of the first shaft support and the second shaft support,
The ring type binding tool according to claim 10. The engaging portion is constituted by a protrusion that protrudes from a side end surface of the shaft support in the longitudinal direction of the substrate.
The ring type binding tool according to any one of claims 9 to 11. At least one tip of the plurality of half-ring portions is provided with a tip claw that engages with each other when the tips are brought close to each other.
The ring type binding tool according to any one of claims 1 to 4 or any one of claims 9 to 11. Each of the pair of substrates is provided with an odd number of half-ring portions arranged side by side in the longitudinal direction of the substrate, and the half-ring portion arranged at the center position in the longitudinal direction of the substrate has a the tip claw is not provided;
The ring type binding tool according to claim 13.