JP7193848B2 - binding tool - Google Patents

Description

The present technology relates to a binder that binds paper sheets, for example.

A binding device has been proposed which comprises two members having a bar-like base and a plurality of half-rings protruding from the base and axially aligned along the base. The binder inserts the half-ring portion into a hole formed in the paper sheet, and binds the paper sheet by abutting the tip portions of the half-ring portions of the two members (see, for example, Patent Document 1).

JP 2019-25844 A

When the user is writing on the paper sheets bound by the binder, the user's hand or arm may hit the binder and interfere with writing.

This indication is made in view of such a situation, and an object of this indication is to provide the binding tool which can control hindrance to writing.

A binding device according to the present disclosure includes two members having a rod-shaped base and a plurality of half rings protruding from the base and axially aligned along the base, wherein one of the members has a tip end of the half ring. and a tip of said half-ring on the other said member, said plurality of half-rings comprising a first half-ring portion located at an axial end of said base; a second half-ring portion positioned axially centrally of the base and being more flexible than the first half-ring portion;

A user's hand or arm often hits a ring located in the axial center of the base during writing. In the present disclosure, by placing the flexible second half-ring portion in the axially central portion of the base, when a user's hand or arm hits the second half-ring portion, the second half-ring portion deforms and Writing interference is suppressed.

The binding device according to the present disclosure has a fitting structure in which the first half ring portions of the two members are fitted to each other, and the thickness of the first half ring portion is greater than the thickness of the second half ring portion. is also big.

In the present disclosure, the first half-ring part has a fitting structure, has a greater thickness than the second half-ring part, and has a high rigidity, so that when the paper sheets are bound, the binding tool can be easily does not open.

In the binding device according to the present disclosure, the tip portion of the second half ring portion of the one member and the tip portion of the second half ring portion of the other member protrude toward the opposite side of the base. and radially overlap the second half ring portion when engaged.

In the present disclosure, the sheets can be bound by the second half-ring portion by overlapping the tip portions. Further, since the second half ring portion is curved so as to protrude toward the opposite side of the base, it is possible to suppress the movement of the second half ring portion along the axial direction.

In the binding device according to the present disclosure, by arranging the flexible second half ring portion in the axially central portion of the base, when the user's hand or arm hits the second half ring portion, the second half The ring part can be deformed to suppress interference with writing. In other words, it is possible to achieve both insertion and removal of paper sheets and avoidance of interference with writing.

FIG. 4 is a schematic exploded plan view of the binding device; FIG. 4 is a schematic enlarged plan view of a left fitting half-ring portion and a right fitting half-ring portion; FIG. 3 is a schematic cross-sectional view with the III-III line shown in FIG. 2 as a cutting line; FIG. 4B is a schematic right side enlarged view of the upper portion of the left fitting half ring portion and a schematic left side enlarged view of the top portion of the right fitting half ring portion; It is a schematic bottom enlarged view of the upper part of the left mating half-ring part and the right mating half-ring part. A schematic cross-sectional view of the left fitting half-ring portion with the VI-VI line shown in FIG. be. FIG. 4A is a schematic front cross-sectional view of an upper left half-ring portion and a lower right half-ring portion, and a schematic rear cross-sectional view of an upper right half-ring portion and a lower left half-ring portion; FIG. 10 is a partially enlarged right side view of the upper left half ring portion and a partially enlarged left side view of the upper right half ring portion; FIG. 10 is a partially enlarged left side view of the upper portion of the lower right half ring portion and a partially enlarged left side view of the upper portion of the lower left half ring portion; FIG. 4 is a schematic enlarged cross-sectional view of a left half-ring portion and a right half-ring portion whose configurations are partially changed;

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the drawings showing a binding device 1 according to an embodiment. In the following description, the upper, lower, left, right, front, and back directions shown in the drawings are used. FIG. 1 is a schematic exploded plan view of the binding device 1. FIG. The binding tool 1 can bind paper sheets and cover sheets with holes formed therein.

The binding tool 1 includes a first member 10 and a second member 20 arranged on the left and right sides, respectively. The first member 10 has a bar-shaped base 11 . The base 11 extends in the front-rear direction. That is, the axial direction of the base 11 is the front-rear direction. A plurality of hooks 12 are arranged side by side in the front-rear direction on the lower side of the base 11 . A rear cover 13 is provided at the rear end of the base 11 . The rear cover 13 has a bottomed tubular shape, the bottom surface of which is arranged on the rear side, and the opening thereof is arranged on the front side. A shaft, which will be described later, is hooked on the plurality of hooks 12 , and the rear end of the shaft is inserted into the rear cover 13 . On the base 11, a plurality of left fitting half ring portions 14 swelling leftward, a plurality of left half ring portions 15 swelling leftward, and a plurality of left lower half ring portions 16 swelling leftward are arranged in the front-rear direction. is set.

The left mating half-rings 14 are arranged at the upper and lower ends of the base 11 and protrude upward from the base 11 . For example, three left mating half-rings 14 are provided on each of the upper and lower ends of the base 11 . The number of left fitting half ring portions 14 is not limited to three, and may be two or less, or four or more. The upper left half ring portion 15 and the left lower half ring portion 16 are alternately arranged in the central portion of the base 11 and protrude upward from the base 11 . The upper end of the upper left half ring portion 15 extends to the right than the upper end of the lower left half ring portion 16 . The axial directions of the left fitting half-ring portion 14, the upper left half-ring portion 15, and the left lower half-ring portion 16 are the front-rear directions. The left mating half-ring portion 14 corresponds to the first half-ring portion, and the upper left half-ring portion 15 and the left lower half-ring portion 16 correspond to the second half-ring portion.

The second member 20 has a bar-shaped base 21 . The base 21 extends in the front-rear direction. That is, the axial direction of the base 21 is the front-rear direction. A plurality of hooks 22 are arranged side by side in the front-rear direction on the lower side of the base 21 . The hooks 12 of the first member and the hooks 22 of the second member 20 are arranged in a staggered manner along the front-rear direction. A front cover 23 is provided at the front end of the base 21 . The front cover 23 has a bottomed tubular shape, the bottom surface of which is arranged on the front side, and the opening thereof is arranged on the rear side. A shaft, which will be described later, is hooked on the plurality of hooks 22 , and the front end of the shaft is inserted into the front cover 23 . The base 21 has a plurality of right fitting half ring portions 24 bulging rightward, a plurality of right upper half ring portions 25 bulging rightward, and a plurality of right lower half ring portions 26 bulging rightward. are arranged side by side.

The right mating half-rings 24 are arranged at the upper and lower ends of the base 21 and protrude upward from the base 21 . For example, three right mating half-rings 24 are provided on each of the upper and lower ends of the base 21 . The number of right fitting half ring portions 24 is not limited to three, and may be two or less, or may be four or more. The tip portion of the right fitting half-ring portion 24 faces the tip portion of the left fitting half-ring portion 14 .

The upper right half ring portion 25 and the lower right half ring portion 26 are alternately arranged in the central portion of the base 21 and protrude upward from the base 21 . The upper end of the upper right half ring portion 25 extends further to the right than the upper end of the lower right half ring portion 26 . In the horizontal direction, the upper right half ring portion 25 faces the left lower half ring portion 16 , and the lower right half ring portion 26 faces the upper left half ring portion 15 . The axial direction of the right fitting half ring portion 24, the right upper half ring portion 25, and the lower right half ring portion 26 is the front-rear direction. The right mating half ring portion 24 corresponds to the first half ring portion, and the right top half ring portion 25 and bottom right half ring portion 26 correspond to the second half ring portion.

The binding device 1 has a shaft extending in the front-rear direction. The hooks 12, 22 of the first member 10 and the second member 20 hook onto the shaft. The front end of the shaft is inserted into the front cover 23 and the rear end is inserted into the rear cover 13 . The first member 10 and the second member 20 are rotatable around the axis of the shaft. A spring 3 is attached to the shaft, and the spring 3 biases the first member 10 forward and the second member 20 rearward. The left fitting half-ring portion 14 and the right fitting half-ring portion 24 are fitted by the biasing force of the spring 3 .

2 is a schematic enlarged plan view of the left fitting half-ring portion 14 and the right fitting half-ring portion 24, and FIG. 3 is a schematic cross-sectional view taken along line III-III shown in FIG. A concave portion 14a is formed on the front side of the upper portion of the left fitting half ring portion 14, and a convex portion 14b projecting forward is formed at the tip portion of the left fitting half ring portion 14. As shown in FIG.

A concave portion 24a is formed in the upper rear side of the right fitting half ring portion 24, and a convex portion 24b projecting rearward is formed at the tip portion of the right fitting half ring portion 24. As shown in FIG. The convex portion 24b of the right fitting half-ring portion 24 has a shape following the concave portion 14a of the left fitting half-ring portion 14, and the shape of the convex portion 14b of the left fitting half-ring portion 14 follows the shape of the right fitting half-ring portion 14. The shape follows the concave portion 24 a of the half-ring portion 24 . The convex portion 24b of the right half-ring portion 24 fits into the concave portion 14a of the left half-ring portion 14, and the convex portion 14b of the left half-ring portion 14 fits into the concave portion 24a of the right half-ring portion 24. to fit. Due to the biasing force of the spring 3, the fitted concave portions 14a, 24a and convex portions 14b, 24b are not easily removed.

4 is an enlarged schematic right side view of the upper portion of the left fitting half ring portion 14 and an enlarged schematic left side view of the upper portion of the right fitting half ring portion 24. FIG. 6 is a schematic bottom enlarged view of the upper portion of the right fitting half-ring portion 24, FIG. 6 is a schematic cross-sectional view of the left fitting half-ring portion 14 taken along line VI-VI shown in FIG. 2, and VI-VI. 4 is a schematic cross-sectional view of the right mating half-ring portion 24 cut at a position corresponding to the line; FIG. 4 to 6, the front-rear direction and reference numerals of the right fitting half-ring portion 24 are shown in parentheses.

A plate portion 14 f protrudes rightward from the upper inner peripheral surface of the left fitting half ring portion 14 . The plate portion 14f is arranged below the concave portion 14a and is arranged on the left side of the convex portion 14b. A lower groove 14g is formed in the front-rear direction central portion of the upper surface of the plate portion 14f, and the lower groove 14g extends in the left-right direction. A projecting portion 14k projecting upward is formed on the front side of the lower groove 14g. A front side surface of the lower groove 14g forms an inclined surface 14h that is inclined with respect to the bottom surface of the lower groove 14g. 14 h of inclined surfaces incline so that it may descend|fall as it goes to a rear side. The inclined surface 14h continues to the upper surface of the projecting portion 14k.

An upper groove 14c is formed on the lower rear side of the convex portion 14b of the left fitting half ring portion 14. As shown in FIG. The upper groove 14c extends in the left-right direction. A projecting portion 14e projecting downward is formed on the lower front side of the projecting portion 14b. A front side surface of the upper groove 14c forms an inclined surface 14d, and the inclined surface 14d is inclined downward toward the front side. 14 d of inclined surfaces continue in a row to the lower surface of the protrusion part 14e.

A plate portion 24f, a lower groove 24g, an inclined surface 24h, and a projecting portion 24k are also formed on the upper portion of the right fitting half-ring portion 24, similarly to the left fitting half-ring portion 14. As shown in FIG. A rear side surface of the lower groove 24g of the right fitting half ring portion 24 forms an inclined surface 24h, and the inclined surface 24h is inclined downward toward the front side. The projecting portion 24k is formed on the rear upper surface of the plate portion 24f.

An upper groove 24c, a projecting portion 24e and an inclined surface 24d are also formed in the lower portion of the convex portion 24b of the right fitting half-ring portion 24, similarly to the convex portion 14b of the left fitting half-ring portion 14. As shown in FIG. The upper groove 24c of the right fitting half ring portion 24 is formed on the front side of the protrusion 24b, and the protrusion 24e is formed on the rear side of the protrusion 24b. In addition, the inclined surface 24d of the convex portion 24b is inclined so as to descend toward the rear side. 24 d of inclined surfaces continue in a row to the lower end of the protrusion part 24e.

The shape of the convex portion 14b of the left mating half-ring portion 14 corresponds to the shape of the concave portion 24a of the right mating half-ring portion 24, and the shape of the convex portion 24b of the right mating half-ring portion 24 corresponds to the shape of the left half-ring portion. It corresponds to the shape of the recess 14 a of the ring portion 14 . When the binding device 1 is closed, the projection 14b of the left fitting half-ring portion 14 fits into the recess 24a of the right fitting half-ring portion 24, and the projection 24b of the right fitting half-ring portion 24 fits into the left fitting half-ring portion 24. It fits into the concave portion 14 a of the fitting half ring portion 14 .

The positions of the upper groove 14c, the projecting portion 14e and the inclined surface 14d of the left half-ring portion 14 correspond to the positions of the projecting portion 24k, the lower groove 24g and the inclined surface 24h of the right half-ring portion 24, respectively. The positions of the upper groove 24c, the projection 24e, and the inclined surface 24d of the half-ring portion 24 correspond to the positions of the projection 14k, the lower groove 14g, and the inclined surface 14h of the left fitting half-ring portion 14, respectively. When the binding device 1 is closed, the projecting portion 24k of the right fitting half-ring portion 24 is inserted into the upper groove 14c of the left fitting half-ring portion 14, and the projecting portion 14e of the left fitting half-ring portion 14 is inserted into the upper groove 14c of the left fitting half-ring portion 14. It is inserted into the lower groove 24 g of the fitting half-ring portion 24 , and the inclined surface 14 d of the left fitting half-ring portion 14 faces the inclined surface 24 h of the right fitting half-ring portion 24 . The user can apply forward force to the projection 24b to move the projection 24e along the inclined surface 14h and release the engagement.

The projecting portion 14k of the left engaging half-ring portion 14 is inserted into the upper groove 24c of the right engaging half-ring portion 24, and the projecting portion 24e of the right engaging half-ring portion 24 is inserted into the lower groove of the left engaging half-ring portion 14. 14 g , and the inclined surface 24 d of the projection 24 b of the right fitting half-ring portion 24 faces the inclined surface 14 h of the plate portion 14 f of the left fitting half-ring portion 14 . Since the projecting portion 24e fits into the lower groove 14g, the projecting portion 24e does not come off easily. The user can apply a rearward force to the protrusion 14b to move the protrusion 24e along the inclined surface 14h and release the fitting.

7 is a schematic front sectional view of the upper left half ring portion 15 and the lower right half ring portion 26, and a schematic rear sectional view of the upper right half ring portion 25 and the left lower half ring portion 16. FIG. 8 is a schematic rear sectional view of the upper left half ring portion. 15 and a partially enlarged left side view of the upper right half ring portion 25, FIG. 9 is a partially enlarged left side view of the upper right half ring portion 26 and the left lower half ring portion 16 is a partially enlarged left side view of the upper part of the . 7 to 9, the front-rear direction and left-right direction of the upper right half ring portion 25 and the left lower half ring portion 16, as well as the reference numerals, are shown in parentheses.

A circumferentially extending groove 15 a is formed in the inner peripheral surface of the upper left half ring portion 15 . A protruding portion 15b protruding rightward is formed at the tip portion of the upper left half ring portion 15. As shown in FIG. A lower surface 15c of the protruding portion 15b is curved so as to protrude upward. As shown in FIG. 8, the lower surface 15c has an arc shape when viewed from the right side. A locking surface 15d projecting downward is formed at the left end of the lower surface 15c. The locking surface 15d and the inner peripheral surface of the upper left half ring portion 15 are connected to each other via an inclined surface 15e.

A circumferentially extending groove 26 a is formed in the inner peripheral surface of the lower right half ring portion 26 . An upper surface 26b of the tip portion of the lower right half ring portion 26 is curved so as to protrude upward. As shown in FIG. 9, the upper surface 26b has an arcuate shape when viewed from the left side. The upper surface 26b and the lower surface 15c have corresponding shapes. The end surface of the tip portion of the lower right half ring portion 26 forms an abutment surface 26c. When the binding device 1 is closed, the protruding portion 15b is arranged above the upper surface 26b, the upper surface 26b and the lower surface 15c face each other, and the abutting surface 26c abuts the locking surface 15d. That is, the tip portion of the upper left half ring portion 15 and the tip portion of the lower right half ring portion 26 overlap in the radial direction of the ring.

Similarly to the upper left half ring portion 15, the upper right half ring portion 25 also includes a groove 25a, a protruding portion 25b, a lower surface 25c, a locking surface 25d, and an inclined surface 25e. has a groove 16a, a top surface 16b and an abutment surface 16c. The groove 25a, the protrusion 25b, the lower surface 25c, the locking surface 25d and the inclined surface 25e are arranged on the right side, and the groove 16a, the upper surface 16b and the abutting surface 16c are arranged on the left side. When the binding device 1 is closed, the projecting portion 25b is arranged above the upper surface 16b, the upper surface 16b and the lower surface 25c face each other, and the abutment surface 16c abuts against the locking surface 25d. That is, the tip portion of the upper right half ring portion 25 and the tip portion of the lower left half ring portion 16 overlap in the radial direction of the ring.

As shown in FIG. 3, the thickness of the middle portion of the left fitting half-ring portion 14 is defined as A1, the thickness of the thickest portion of the upper portion of the left fitting half-ring portion 14 is defined as B1, and as shown in FIG. When the thickness of the middle portion of the left upper half ring portion 15 is A2 and the thickness of the thickest portion of the upper left half ring portion 15 is B2, the thickness A1 is larger than the thickness A2, and the thickness B1 is larger than the thickness B2. .

The thickness of the middle portion of the right half-ring portion 24 is A1 like the left half-ring portion 14, and the thickness of the thickest portion of the right half-ring portion 24 is equal to Like the ring portion 14, it is B1. The thickness of the middle portion of the lower right half ring portion 26 is A2 as in the case of the upper left half ring portion 15 . The thickness of the upper thickest portion of the lower right half ring portion 26 is smaller than that of the upper left half ring portion 15 .

Although not shown, the thickness of the middle portion of the upper right half ring portion 25 is A2, and the thickness of the thickest portion of the upper right half ring portion 25 is B2. The thickness of the middle portion of the lower left half ring portion 16 is A 2 , and the thickness of the thickest portion of the upper portion of the lower left half ring portion 16 is smaller than that of the upper right half ring portion 25 .

That is, the upper left half-ring portion 15, the left lower half-ring portion 16, the upper right half-ring portion 25, and the lower right half-ring portion 26 are generally thinner than the left fitting half-ring portion 14 and the right fitting half-ring portion 24. , are flexibly configured. The left half-ring portion 14 and the right half-ring portion 24 have a fitting structure in which the left half-ring portion 14 and the right half-ring portion 24 are fitted to each other. The thicknesses of the portion 14 and the right mating half-ring portion 24 are generally greater than the thicknesses of the upper left half-ring portion 15 , the left lower half-ring portion 16 , the upper right half-ring portion 25 and the lower right half-ring portion 26 .

FIG. 10 is a schematic enlarged cross-sectional view of the left fitting half-ring portion 14 and the right fitting half-ring portion 24 with partially modified configurations. The fitting structure is not limited to the structure described above. For example, as shown in FIG. 10, a convex portion 141 is formed at the tip of the left fitting half-ring portion 14, and a concave portion 241 is formed at the tip of the right fitting half-ring portion 24, and the convex portion 141 is formed into the concave portion 241. The left mating half-ring portion 14 and the right mating half-ring portion 24 may be mated.

The left half-ring portion 14 and the right half-ring portion 24 and the upper left half-ring portion 15, left lower half-ring portion 16, upper right half-ring portion 25 and lower right half-ring portion 26 are made of different materials, The left mating half ring portion 14 and the right mating half ring portion 24 may be made stiffer than the left top half ring portion 15 , left bottom half ring portion 16 , top right half ring portion 25 and bottom right half ring portion 26 . For example, the left fitting half ring portion 14 and the right fitting half ring portion 24 are made of a polypropylene material, an ABS resin material, an acrylic resin material, or the like. And the lower right half ring portion 26 may be made of polyethylene material, soft vinyl chloride material, or the like. In this case, even if the thicknesses of the left fitting half ring portion 14 and the right fitting half ring portion 24 are the same as those of the left top half ring portion 15, the left bottom half ring portion 16, the top right half ring portion 25 and the bottom right half ring portion 26, good.

In the binding device 1 according to the embodiment, the flexible upper left half ring portion 15, left lower half ring portion 16, upper right half ring portion 25, and lower right half ring portion 26 are arranged in the axial center of the bases 11 and 21. When the user's hand or arm hits the upper left half ring portion 15, the left lower half ring portion 16, the upper right half ring portion 25 and the lower right half ring portion 26 by positioning, the upper left half ring portion 15 and the left lower half ring portion 16, the upper right half ring portion 25 and the lower right half ring portion 26 are deformed to suppress writing interference.

For example, if all the rings are configured flexibly, it is possible to avoid interference with writing, but it becomes difficult to insert and remove paper sheets. This is because it is not possible to fit the flexible half-rings together and maintain the fitted state. Since the binding device 1 according to the embodiment includes a highly rigid half-ring portion and a flexible half-ring portion, it is possible to both insert and remove paper sheets and avoid interference with writing.

Moreover, since the first half-ring portion has a fitting structure and high rigidity, the binder 1 does not easily open when the paper sheets are bound.

Further, by overlapping the tip portions of the upper left half ring portion 15 and the lower right half ring portion 26 and overlapping the tip portions of the upper right half ring portion 25 and the lower left half ring portion 16, the paper sheets can be bound. In addition, since the tip portion of each half-ring portion is curved so as to protrude toward the opposite side of the bases 11 and 21, movement of each half-ring portion along the front-rear direction (the axial direction of the ring) can be suppressed. can be done.

The upper surfaces 16b, 26b and the lower surfaces 15c, 25c are curved in an arc shape, and are shaped like a letter "<" rotated 90 degrees so that the apex is located on the upper side, and rotated 90 degrees so that the lower side is open. It may be bent in a "U" shape. In other words, it is only required to deform so as to protrude radially outward of the ring so as to prevent axial movement of the ring.

The embodiments disclosed this time should be considered as examples in all respects and not restrictive. The technical features described in each embodiment can be combined with each other, and the scope of the present invention is intended to include all modifications within the scope of the claims and the scope of equivalents to the scope of the claims. be done.

1 binding device 10 first member 11 base 14 left fitting half ring portion (first half ring portion)
14a concave portion 14b convex portion 15 upper left half ring portion (second half ring portion)
15b projecting portion 15c lower surface 16 lower left half ring portion (second half ring portion)
16b upper surface 20 second member 21 base 24 right fitting half ring portion (first half ring portion)
24a concave portion 24b convex portion 25 upper right half ring portion (second half ring portion)
25b projecting portion 25c lower surface 26 lower right half ring portion (second half ring portion)
26b upper surface

Claims (3)

It comprises two members having a bar-shaped base and a plurality of half-rings projecting from the base and axially aligned along the base, the tip of the half-ring on one member and the tip of the half-ring on the other member. A binding tool that engages with the tip of the half ring,
The plurality of half-rings are
a first half-ring portion disposed at an axial end of the base;
a second half-ring portion disposed axially centrally of the base and more flexible than the first half-ring portion. 2. The method according to claim 1, wherein the first half-ring portions of the two members each have a fitting structure that fits together, and the thickness of the first half-ring portion is greater than the thickness of the second half-ring portion. binding tool. The tip portion of the second half ring portion of the one member and the tip portion of the second half ring portion of the other member are curved and engaged so as to protrude toward the opposite side of the base. The binding tool according to claim 1 or 2, which overlaps in the radial direction of the second half-ring portion at the same time.

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