JP2021024212A - Binder - Google Patents

Abstract

To enable a tip part of a binding pole to open wider while suppressing a width dimension of a back member of a binder from enlarging.SOLUTION: A binder 0 is provided with a back member 3 comprising a shaft body J1 serving as a shaft of a hinge and a pair of binding pole members 1 and 2 which engage with the shaft body J1 and turn around a shaft center C1 the body to open and close binding poles 12 and 22. In the binder 0, in the back member 3 are provided the first shaft body J1 with which the first binding pole member 1 engages and a second shaft body with which the second binding pole member 2 engages so that the bodies deviate in a width direction orthogonal to directions of shaft centers of the bodies. In the first binding pole member 1 is provided a first mooring part 13 that expands in a circumferential direction around the shaft center C1 of the first shaft body J1 and engages with an outer periphery of the first shaft body J1. In the second binding pole member 2 is provided a second mooring part that expands in a circumferential direction around the shaft center of the second shaft body and engages with an outer periphery of the second shaft body. When viewed along the directions of the shaft centers, the first shaft body J1 and the second mooring part are arranged so that portions thereof overlap with each other, and the second shaft body and the first mooring part 13 are arranged so that portions thereof overlap with each other.SELECTED DRAWING: Figure 19

Description

The present invention relates to a binding tool for binding a plurality of sheets of paper.

The following patent documents disclose a ring binding tool capable of binding paper leaves such as loose-leaf and clear book refills. This binding tool has a set of binding rod members that can rotate relative to the axis of the binding rod member via a hinge, and a back member (operating member) that can be displaced relative to the binding rod member along the axial direction. It is equipped. The back member holds and covers the shaft body which is the shaft of the hinge in the binding rod member. The back member prohibits the binding rod member from rotating in the direction of opening the binding rod at the locked position, and allows the binding rod member to rotate in the same direction at the unlocked position. If the user slides the spine member from the locked position to the unlocked position, the binding rod can be opened and the paper leaves can be replaced arbitrarily.

In the binding tool described above, the central axes of rotation of the set of binding rod members coincided. On the other hand, if the rotation center of one binding rod member is deviated from the rotation center of the other binding rod member, the tip of the binding rod provided by both binding rod members can be opened wider. become.

However, if the back member adopts a structure in which the shaft bodies of both binding rod members are held together, there is a concern that the width of the back member will be enlarged and the usability as a binding tool will be reduced.

JP-A-2019-098651 Japanese Unexamined Patent Publication No. 2019-098652

An object of the present invention is to prevent the tip of the binding rod from being opened wider while suppressing the enlargement of the width of the back member of the binding tool.

In the present invention, a binding tool including a back member having a shaft body serving as an axis of a hinge and a set of binding rod members that engage with the shaft body and rotate around the axis to open and close the binding rod. Therefore, the first shaft body with which the first binding rod member is engaged and the second shaft body with which the second binding rod member is engaged with the back member are in the axial direction of each other. It is provided so as to be biased in the orthogonal width direction, and extends in the circumferential direction around the axis of the first shaft body to engage with the outer periphery of the first shaft body. A first mooring portion is provided, and a second mooring portion that extends to the second binding rod member in the circumferential direction around the axis of the second shaft body and engages with the outer periphery of the second shaft body. Is provided, and when viewed along the axial direction, the first shaft body and the second mooring portion partially overlap, and the second shaft body and the first mooring portion overlap. Consists of a binding tool that is partially overlapped.

An internal space is formed in the back member so as to be shielded from the locking direction orthogonal to the axial direction and the width direction, and the binding rod member projects in the axial direction of the shaft body and the binding rod. If a protruding portion is provided in the internal space in a state where the binding rod member is rotated so as to close the binding rod member, it is effective that the back member is separated from the binding rod member and the binding tool is disassembled. Can be deterred.

More specifically, the back member is slidable with respect to the binding rod member along the axial direction, and the locking position prohibits the binding rod member from rotating in the direction of opening the binding rod. It is possible to selectively take an unlock position that allows this. On top of that, when the back member takes the lock position, the shaft body and the mooring portion interfere with each other to prevent the binding rod member from rotating in the direction of opening the binding rod. When the back member takes the unlocked position, a structure is adopted that allows the binding rod member to rotate in the direction of opening the binding rod without interfering with the shaft body and the mooring portion.

Further, when the back member takes the lock position, it is prohibited that the binding rod member rotates in the direction of opening the binding rod due to the interference between the internal space and the protruding portion, and the back member is prevented from rotating. A structure may be adopted that allows the binding rod member to rotate in the direction of opening the binding rod without interfering with the internal space and the protruding portion when the vehicle takes the unlocked position.

One of the first binding rod member and the second binding rod member is provided with an engaging protrusion, and the other is provided with an engaged body that engages with the engaging protrusion, and the axial direction. If the engaging protrusion and the engaged body are arranged at positions deviated from the shaft body when viewed along the above, the engaging rod member of one of the binding rod members is engaged with the engaging protrusion and the engaged body. The rotation and the rotation of the other binding rod member are interlocked with each other, and the binding rod opens and closes more smoothly.

According to the present invention, it is possible to realize a binding tool in which the tip end portion of the binding rod can be opened wider while suppressing the enlargement of the width dimension of the back member.

The perspective view which shows the ring notebook using the binding tool in one Embodiment of this invention. The side view which shows the binding state of the binding tool of the same embodiment. The whole perspective view which shows the binding state of the binding tool of the same embodiment. The perspective view which shows the binding rod member of the binding tool of the same embodiment. The perspective view which shows the back member of the binding tool of the same embodiment. FIG. 5 is a cross-sectional view of each part in FIG. The main part exploded perspective view of the binding tool of the same embodiment. The main part exploded perspective view of the binding tool of the same embodiment. The main part exploded perspective view of the binding tool of the same embodiment. The main part perspective view which shows the binding state of the binding tool of the same embodiment. The main part plan view which shows the binding state of the binding tool of the same embodiment. The vertical sectional view which shows the binding state of the binding tool of the same embodiment. FIG. 2 is a cross-sectional view taken along the line AA in FIG. FIG. 2 is a cross-sectional view taken along the line BB in FIG. FIG. 2 is a cross-sectional view taken along the line CC in FIG. FIG. 2 is a cross-sectional view taken along the line DD in FIG. FIG. 2 is a cross-sectional view taken along the line EE in FIG. FIG. 2 is a cross-sectional view taken along the line FF in FIG. FIG. 2 is a cross-sectional view taken along the line GG in FIG. FIG. 2 is a cross-sectional view taken along the line HH in FIG. FIG. 2 is a cross-sectional view taken along the line II. The main part perspective view which shows the unbinding state of the binding tool of the same embodiment. The main part plan view which shows the unbinding state of the binding tool of the same embodiment. The vertical sectional view which shows the unbinding state of the binding tool of the same embodiment. The main part perspective view which shows the unbinding state of the binding tool of the same embodiment. FIG. 3 is a cross-sectional view of a portion corresponding to FIG. 13 in the unbinding state of the binding tool of the same embodiment. FIG. 4 is a cross-sectional view of a portion corresponding to FIG. 14 in the unbinding state of the binding tool of the same embodiment. FIG. 15 is a cross-sectional view of a portion corresponding to FIG. 15 in the unbinding state of the binding tool of the same embodiment. FIG. 6 is a cross-sectional view of a portion corresponding to FIG. 16 in the unbinding state of the binding tool of the same embodiment. FIG. 6 is a cross-sectional view of a portion corresponding to FIG. 17 in the unbinding state of the binding tool of the same embodiment. FIG. 8 is a cross-sectional view of a portion corresponding to FIG. 18 in the unbinding state of the binding tool of the same embodiment. FIG. 9 is a cross-sectional view of a portion corresponding to FIG. 19 in the unbinding state of the binding tool of the same embodiment. FIG. 2 is a cross-sectional view of a portion corresponding to FIG. 20 in the unbinding state of the binding tool of the same embodiment. FIG. 2 is a cross-sectional view of a portion corresponding to FIG. 21 in the unbinding state of the binding tool of the same embodiment.

An embodiment of the present invention will be described with reference to the drawings. The binding tool 0 of the present embodiment shown in FIGS. 1 to 34 is a ring binding tool including a plurality of binding rods 12 and 22 that can be opened and closed. Each of the binding rods 12 and 22 is inserted into a plurality of binding holes previously drilled in the paper leaves S to bind the paper leaves S. As shown in FIG. 1, this binding tool 0 can be used as a ring notebook by binding S such as a plurality of leaves or clear book refills (furthermore, front cover and back cover) that serve as the inner cover of a notebook. Can be used for various purposes. This ring note can be spread out with the page open at an angle of 180 °.

As shown in FIGS. 1 to 3, 7 to 9, 12 and 24, the binding tool 0 of the present embodiment has a first binding rod member 1 and a second binding rod member 1 and a second binding that rotate relative to each other. The rod member 2, the back member 3 operated to switch the closing position / opening position of the binding rods 12 and 22 supported by the two binding rod members 1 and 2, and the elastic urging member that elastically biases the back member 3. The barrel tension coil spring 4 is a constituent member.

Hereinafter, for the sake of simplicity, the spine width direction of the ring notebook is defined as the X-axis direction, the cover width direction of the ring notebook is defined as the Y-axis direction, and the cover height direction of the ring notebook is defined as the Z-axis direction. These X-axis, Y-axis and Z-axis are orthogonal to each other. The Z-axis direction corresponds to the axial direction in which the central axis of rotation of the binding rod members 1 and 2 extends.

Incidentally, the conventional binding tool disclosed in the above-mentioned patent document was for binding B5 size paper sheets. The binding tool 0 of the present embodiment binds a larger size paper leaf S, specifically, an A4 size paper leaf S. Therefore, as compared with the conventional binding tool, the dimensions of the binding rod members 1, 2 and the back member 3 along the Z-axis direction are further extended, and the number of the binding rods 12 and 22 is also increased. ..

The shape of the first binding rod member 1 and the shape of the second binding rod member 2 are similar to each other. As shown in FIGS. 3, 4 and 7 to 9, the first binding rod member 1 has a long rod-shaped base 11 along the Z-axis direction and extends from the base 11 in the Y-axis direction. A plurality of binding rods 12, a first mooring portion 13 hanging from the base 11 on the opposite side of the binding rod 12, a protrusion 14 protruding from the first mooring portion 13 along the Z-axis direction, and the base 11 The mooring portion 13 and the protrusion 14 in the above are the bulging portion 15 that bulges from the portion deviated along the Z-axis direction to the opposite side of the binding rod 12, and one end of the binding rod member 1 (the tip of the back member 3). ) Side, and an engaged body 17 on the other end (base end of the back member 3) side of the binding rod member 1. In the present embodiment, the substrate 11, the binding rod 12, the mooring portion 13, the protrusion 14, the bulge 15, the engagement protrusion 16, and the engaged body 17 are integrally molded with resin.

There are a large number of binding rods 12, and as shown in FIGS. 2 to 4 and 7 to 9, they are lined up along the axial direction (Z-axis direction). As shown in FIGS. 7 to 9 and 13 to 20, the individual binding rods 12 once advance straight outward from the outer surface 111 of the substrate 11 along the X-axis direction, and project from the outer end thereof. It rises in the Y-axis direction while curving to draw an arc or elliptical arc. The upper surface 121 of the straight portion of the base end portion 12a of the binding rod 12 is substantially flush with the top surface 113 of the substrate 11 facing the Y-axis direction. Further, the tip portion 12b of the binding rod 12 extends linearly in the X-axis direction toward the binding rod 22 of the second binding rod member 2 which is the other party. The cross section of the curved portion of the binding rod 12 has a flat shape slightly expanded in the axial direction, a substantially oval shape, or a substantially rounded square shape. The tip portion 12b of the binding rod 12 is notched like a set.

As shown in FIGS. 7 to 9 and 13 to 20, the first mooring portion 13 extends from the lower half of the inner side surface 112 of the substrate 11, and is X when viewed from the Z-axis direction. It forms a substantially C-shape that opens outward along the axial direction. The mooring portion 13 engages with the shaft body J1 so as to hold the first shaft body J1 provided on the back member 3 described later from the inside, and together with the shaft body J1, the central shaft C1 of the rotation of the binding rod member 1. A hinge is configured. The inner peripheral surface of the mooring portion 13 has a substantially cylindrical shape, but the portion intersecting the bottom surface 114 of the substrate 11 is a flat contact that forms an angle shape orthogonally or substantially orthogonal to the bottom surface 114. It is a surface 131.

As shown in FIGS. 7 to 9, the projecting portion 14 projects from one end to the other end of the binding rod member 1 from the lower end portion of the first mooring portion 13. The protruding portion 14 is inserted into the internal space 34s formed in the back member 3 at the lock position (L) described later.

As shown in FIGS. 3, 4 and 7 to 9, the second binding rod member 2 has a long rod-shaped base 21 along the Z-axis direction and extends from the base 21 in the Y-axis direction. A plurality of binding rods 22, a second mooring portion 23 hanging from the base 21 on the opposite side of the binding rod 22, a protruding portion 24 protruding from the second mooring portion 23 along the Z-axis direction, and the base 21. The mooring portion 23 and the protrusion 24 in the above are the bulging portion 25 bulging from the portion deviated along the Z-axis direction to the opposite side of the binding rod 22, and one end of the binding rod member 2 (the tip of the back member 3). ) Side, and an engaging protrusion 26 on the other end (base end of the back member 3) side of the binding rod member 2. In the present embodiment, the substrate 21, the binding rod 22, the mooring portion 23, the protrusion 24, the bulge 25, the engagement protrusion 26, and the engaged body 27 are integrally molded with resin.

There are a large number of binding rods 22, and as shown in FIGS. 2 to 4 and 7 to 9, they are lined up along the axial direction (Z-axis direction). As shown in FIGS. 7 to 9 and 13 to 20, the individual binding rods 22 once travel straight outward from the outer surface 211 of the substrate 21 along the X-axis direction and project from the outer end thereof. It rises in the Y-axis direction while curving to draw an arc or elliptical arc. The upper surface 221 of the straight portion of the base end portion 22a of the binding rod 22 is substantially flush with the top surface 213 of the substrate 21 facing the Y-axis direction. Further, the tip end portion 22b of the binding rod 22 extends linearly in the X-axis direction toward the binding rod 12 of the first binding rod member 1 which is the other party. The cross section of the curved portion of the binding rod 22 has a flat shape slightly expanded in the axial direction, a substantially oval shape, or a substantially rounded square shape. The tip of the binding rod 22 is cut out like a set.

As shown in FIGS. 7 to 9 and 13 to 20, the second mooring portion 23 extends from the lower half of the inner side surface 212 of the substrate 21, and is X when viewed from the Z-axis direction. It forms a substantially C-shape that opens outward along the axial direction. The mooring portion 23 engages with the shaft body J2 so as to hold the second shaft body J2 provided on the back member 3 described later from the inside, and together with the shaft body J2, the central shaft C2 of the rotation of the binding rod member 2. A hinge is configured. The inner peripheral surface of the mooring portion 23 has a substantially cylindrical shape, but the portion intersecting the bottom surface 214 of the substrate 21 is a flat contact that forms an angle shape orthogonally or substantially orthogonal to the bottom surface 214. The surface is 231.

As shown in FIGS. 8 and 9, the projecting portion 24 projects from one end to the other end of the binding rod member 2 from the lower end portion of the second mooring portion 23. The protruding portion 24 is inserted into the internal space 34s formed in the back member 3 at the lock position (L) described later.

As shown in FIGS. 5 and 6, the back member 3 includes a rod-shaped back member main body 31 that is long along the Z-axis direction and a base end portion integrally provided on the base end side of the back member main body 31. 32 and a tip portion 33 integrally provided on the tip end side of the back member main body 31 are provided. The back member main body 31 is divided into a plurality of regions R1, R2, and R3 in the longitudinal direction by a partition wall 34. That is, the back member 3 of this embodiment is provided with a central region R3 for accommodating the above-mentioned tension coil spring 4 in the center in the longitudinal direction, and is first between the central region R3 and the base end portion 32. The pivotal region R1 and the second pivotal region R2 are provided alternately adjacent to each other in the longitudinal direction. Further, the first pivotal region R1 and the second pivotal region R2 are provided alternately adjacent to each other in the longitudinal direction between the central region R3 and the tip portion 33. Note that (j), (k), (l), (m), (n) and (p) in FIG. 6 are the JJ line, the KK line, the LL line and the M in FIG. 5, respectively. It is sectional drawing along the −M line, the NN line, and the PP line.

The first pivotal region R1 is formed between a pair of partition walls 34 separated in the longitudinal direction, and as shown in FIG. 6, the back wall 35 connecting the partition walls 34 and one side of the back wall 35. The first mooring of the first binding rod member 1 erected between the short side wall 36 that protrudes in the Y direction from the edge and connects the partition walls 34 to each other and the partition wall 34 corresponding to the other side edge of the back wall 35. It is provided with a first shaft body J1 that pivotally supports the portion 13. The first shaft body J1 has a rotation allowable portion J1a that rotatably supports the first mooring portion 13 of the first binding rod member 1, and a rotation that prohibits the rotation of the first mooring portion 13. It includes a prohibited portion J1b and a transient guide portion J1c that connects the rotation-allowed portion J1a and the rotation-prohibited portion J1b while changing the cross section. The rotation-allowable portion J1a is basically a shaft-shaped one having a circular cross section, and a locking surface for locking the binding rod member 1 by partially bulging an outer portion that does not contact the mooring portion 13. It forms J1s. The locking surface J1s is for contacting the base 11 of the binding rod member 1 to regulate the maximum opening position (Q) of the binding rod member 1. The rotation prohibition portion J1b includes a square edge J1e that engages with a right-angled inside corner 1x formed by the bottom surface 114 of the base 11 of the binding rod member 1 and the contact surface 131 of the mooring portion 13. The partition wall 34 on the distal end side forming the first pivotal region R1 has an internal space 34s for accommodating the protrusion 14 of the first binding rod member 1 at the lock position (L), and also at the lock position (L). An engaging step portion 34d that engages with the bulging portion 15 of the first binding rod member 1 is provided.

The second pivotal region R2 is formed between a pair of partition walls 34 separated in the longitudinal direction, and as shown in FIG. 6, the back wall 35 connecting the partition walls 34 and the other side of the back wall 35. The short side wall 36 that protrudes in the Y direction from the edge and connects the partition walls 34 to each other, and the second mooring of the second binding rod member 2 that is erected between the partition walls 34 corresponding to one side edge of the back wall 35. It is provided with a second shaft body J2 that pivotally supports the portion 23. The second shaft body J2 has a rotation permitting portion J2a that rotatably supports the second mooring portion 23 of the second binding rod member 2, and a rotation that prohibits the rotation of the second mooring portion 23. It includes a prohibited portion J2b and a transient guide portion J2c that connects the rotation permitted portion J2a and the rotation prohibited portion J2b while changing the cross section. The rotation-allowable portion J2a is basically a shaft-shaped one having a circular cross section, and a locking surface for locking the binding rod member 2 by partially bulging an outer portion that does not contact the mooring portion 23. It forms J2s. The locking surface J2s is for contacting the base 21 of the binding rod member 2 to regulate the maximum opening position (Q) of the binding rod member 2. The rotation prohibition portion J2b includes a square edge J2e that engages with a right-angled inside corner 2x formed by the bottom surface 214 of the base 21 of the binding rod member 2 and the contact surface 231 of the mooring portion 23. The partition wall 34 on the distal end side forming the second pivoting region R2 has an internal space 34s for accommodating the protrusion 24 of the second binding rod member 2 at the lock position (L), and also at the lock position (L). An engaging step portion 34d that engages with the bulging portion 25 of the second binding rod member 2 is provided.

As shown in FIG. 5, the first pivotal region R1 and the second pivotal region R2 described above are between the central region R3 and the proximal end portion 32, and between the central region R3 and the tip portion 33. For example, three are alternately arranged in each. A first mooring portion 13 is provided at each portion corresponding to the first pivoting region R1 of the back member 3 in the first binding rod member 1 described above, and these mooring portions 13 correspond to each other. It is engaged with the first shaft body J1 of the first pivotal region R1. A second mooring portion 23 is provided at each portion corresponding to the second pivoting region R2 of the back member 3 in the second binding rod member 2 described above, and these mooring portions 23 correspond to each other. It is engaged with the second shaft body J2 of the two pivot region R2.

As shown in FIGS. 5 and 6, the first shaft body J1 with which the first binding rod member 1 is engaged and the second shaft body J2 with which the second binding rod member 2 is engaged are Is provided so as to be biased in the width direction (X-axis direction) orthogonal to their axial center direction (Z-axis direction). On top of that, the first shaft body J1 and the second mooring portion 23 partially overlap, and the second shaft body J2 and the first mooring portion 13 partially overlap and are arranged. There is. That is, the first mooring portion 13 has a substantially C-shape that is open outward along the X-axis direction when viewed from the Z-axis direction, and is fitted into the corresponding first shaft body J1 from the inside. The mooring portion 13 that surrounds the inside of the shaft body J1 and the adjacent second shaft body J2 are arranged so as to partially overlap when viewed from the axial direction, and the lock position. In (L), the entire mooring portion 13 is arranged inside the outer end of the first shaft body J1. Similarly, the second mooring portion 23 has a substantially C-shape that is open outward along the X-axis direction when viewed from the Z-axis direction, and is attached to the corresponding second shaft body J2 from the inside. The mooring portion 23 that is fitted and surrounds the inside of the shaft body J2 and the adjacent first shaft body J1 are arranged so as to partially overlap when viewed from the axial direction, and are locked. At the position (L), the entire mooring portion 23 is arranged inside the outer end of the second shaft body J2.

In addition, window portions 3 m are formed between the back wall 35 of the back member 3 and the shaft bodies J1 and J2, respectively, and as shown in FIGS. 17 and 19, these window portions are formed at the lock position (L). The tips of the mooring portions 13 and 23 have invaded 3 m, respectively.

Further, the central region R3 of the back member 3 is formed between the pair of partition walls 34 separated in the longitudinal direction, and as shown in FIG. 5, the back wall 35 connecting the partition walls 34 and the back wall It is provided with a side wall 36 projecting from one side edge of 35 in the Y direction to connect the partition walls 34 to each other, and a spring-hanging protrusion 37 projecting from the inner surface of the side wall 36, and is housed in the central region R3. This spring hooking protrusion 37 is hung on one end of the tension coil spring 4. The other end of the tension coil spring 4 is hung on a spring hooking protrusion 29 provided on the second binding rod member 2 as shown in FIGS. 12 and 24, and the back member 3 is hung by the elastic force of the tension coil spring 4. Is urged toward the base end with respect to the second binding rod member 2.

As shown in FIG. 5, the base end portion 32 of the back member 3 is pivotally attached to the base end housing 38 provided integrally with the back member main body 31 via the back wall 35 and the side wall 36, and the base end housing 38. It is provided with a restraint member 39. As shown in FIGS. 7 and 10 to 12, the base end housing 38 includes a side wall 381 and a top wall 382 connecting the upper ends of the side walls 381, and the base end housing 38 has a position between the side walls 381. The detachment prevention pin 28 projecting from the base end of the second binding rod member 2 is loosely fitted so as to be movable in the vertical direction (Y-axis direction) and the axial center direction (Z-axis direction). On the upper surface of the top wall 382, a wedge-shaped cam 383 for interrupting the bases 11 and 21 of the first and second binding rod members 1 and 2 to open the binding rod members 1 and 2 is provided. There is. The restraint member 39 includes a pair of outer walls 391 rotatably provided on the base end housing 38 via a shaft 384, and a bottom wall 392 connecting the lower edges of the outer wall 391. , The inner surface of the bottom wall 392 is provided with a locking projection 393 that penetrates into the base end housing 38. The restraint member 39 is between a restraint position (t) at which the locking projection 393 enters the base end housing 38 and a restraint release position (v) rotated 180 degrees upward from the restraint position (t). At the restraint position (t), the tip of the detachment prevention pin 28 of the binding rod member 2 is locked by the locking projection 393, and the back member 3 is the binding rod member 1, 2 It regulates sliding toward the tip. Further, as shown in FIGS. 22, 23 and 25, the restraint member 39 has an arrow 39a for guiding the direction for opening the binding rod members 1 and 2 at the restraint release position (v), and a slip. A plurality of ridges 39b are provided for stopping.

As shown in FIG. 5, the tip portion 33 of the back member 3 includes a tip housing 30 provided integrally with the back member main body 31 via the back wall 35 and the side wall 36. As shown in FIGS. 8 and 12 to 14, the tip housing 30 includes a side wall 301, a top wall 302 connecting the upper ends of the side walls 301, and a back wall connecting the lower ends of the side walls 301. The detachment prevention pin 18 projecting from the tip of the first binding rod member 1 between the side walls 301 is provided with 35 in the vertical direction (Y-axis direction), the horizontal direction (X-axis direction), and the axial center. It is loosely fitted so as to be movable in the direction (Z-axis direction). Further, as shown in FIGS. 2, 3, 5, and 8, windows 30a that open laterally are alternately arranged on both side walls 301.

In addition, the binding tool 0 described above includes at least two opening prevention mechanisms for preventing the binding rods 12 and 22 from opening against the will of the user, and the back member 3 due to an impact such as dropping. At least three detachment prevention mechanisms for preventing the binding rod members 1 and 2 from losing their function as the binding rod, and the first binding rod member 1 and the second binding rod member 2. It is equipped with a binding rod synchronization mechanism for synchronously opening and closing.

The first opening prevention mechanism is provided with the rotation-prohibited portions J1b and J2b of the shaft bodies J1 and J2 described above, and the right-angled inside corners 1x and 2x provided on the binding rod members 1 and 2. As shown in FIGS. 17 and 19, at the lock position (L), the square edges J1e and J2e of the rotation prohibition portions J1b and J2b are engaged with the right-angled inner corners 1x and 2x to engage the binding rod members 1, 2 The rotation of the is prohibited. That is, when the binding rod members 1 and 2 try to open at the lock position (L), the contact surfaces 131 and 231 of the mooring portions 13 and 23 forming the inside corners 1x and 2x and the upright surfaces forming the square edges J1e and J2e. J1t and J2t interfere with each other and their rotational operation is prohibited. That is, the opening prevention mechanism prohibits the binding rod members 1 and 2 from rotating in the direction of opening the binding rods 12 and 22 due to the interference between the shaft bodies J1 and J2 and the mooring portions 13 and 23. ..

The second opening prevention mechanism is provided on the bulging portions 15 and 25 of the first and second binding rod members 1 and 2 and each partition wall 34 of the back member 3, and is provided at the lock position (L) in FIGS. 16 and 16. As shown in 18, the bulging portions 15 and 25 are provided with engaging step portions 34d, respectively.

In the first detachment prevention mechanism, as shown in FIGS. 17 and 19, the mooring portions 13 and 23 of the binding rod members 1 and 2 are in a bound state, that is, the binding rod members 1 and 2 are in the closed position (R). It is shaped so as to wrap around below the shaft bodies J1 and J2 (on the back wall 35 side of the back member 3) in the state of. That is, as described above, each of the mooring portions 13 and 23 has a substantially C-shape that is open outward along the X-axis direction when viewed from the Z-axis direction, and has a back at the lock position (L). The maximum amount of wraparound is secured to the extent that the tips of the mooring portions 12 and 23 invade the window portion 3 m between the wall 35 and the shaft bodies J1 and J2, respectively.

As shown in FIGS. 16 and 18, the second detachment prevention mechanism includes the protrusions 14 and 24 provided on the mooring portions 13 and 23 of the binding rod members 1 and 2 described above, and the back member 3. It is provided with an internal space 34s provided in each partition wall 34, and the protruding portions 14 and 24 are inserted into and detached from each internal space 34s in a state where the back member 3 is slid to the lock position (L). Is prohibited. This detachment prevention mechanism also functions as an opening prevention mechanism. That is, when the back member 3 takes the lock position (L), the internal space 34s and the protrusions 14 and 24 interfere with each other, so that the binding rod members 1 and 2 rotate in the direction of opening the binding rods 12 and 22. Is prohibited.

The third detachment prevention mechanism includes a detachment prevention pin 18 on the tip side provided at the tip end portion of the first binding rod member 1 and a base provided at the base end portion of the second binding rod member 2. It is provided with a detachment prevention pin 28 on the end side, and as shown in FIGS. 13, 14, 26 and 27, the detachment prevention pin 18 on the distal end side is attached to the distal end 33 of the back member 3. While loosely fitting into the provided tip housing 30, as shown in FIGS. 21 and 34, the detachment prevention pin 28 on the proximal end side is loosely fitted to the proximal housing 38 provided at the proximal end 32 of the back member 3. It fits. Since the detachment prevention pin 18 on the tip side is eccentric from the rotation center of the first binding rod member 1 (the axis C1 of the first shaft body J1), the opening and closing operation of the first binding rod member 1 is performed. Along with this, a gentle circular motion is performed. Therefore, as shown in FIGS. 13, 14, 26, and 27, a clearance capable of allowing the arc motion is provided between the detachment prevention pin 18 on the distal end side and the housing 30 on the distal end side. .. Further, since the detachment prevention pin 28 on the base end side is also eccentric from the rotation center of the second binding rod member 2 (the axis C2 of the second shaft body J2), the opening / closing operation of the second binding rod member 2 is performed. Along with this, a gentle circular motion is performed. Therefore, as shown in FIGS. 21 and 34, a clearance capable of allowing the arc motion is also provided between the detachment prevention pin 28 on the proximal end side and the housing 38 on the proximal end side.

As shown in FIGS. 15, 20, 28, and 33, the binding rod synchronization mechanism engages with the engaging protrusion 16 provided on the base end side of the first binding rod member 1 and the engaging protrusion 16. The engaged body 27 of the second binding rod member 2 to be fitted, the engaging protrusion 26 provided on the tip end side of the second binding rod member 2, and the first binding rod that engages with the engaging protrusion 26. It includes an engaged body 17 of the member 1. According to such a configuration, the engaging protrusions 16 and 26 are arranged at positions deviated from the axial centers C1 and C2 of the axial bodies J1 and J2 when viewed along the axial center direction (Z-axis direction). Therefore, when the binding rod members 1 and 2 perform the opening / closing operation, the engaging protrusions 16 and 26 move in the Y-axis direction. Then, the movements of the engaging protrusions 16 and 26 in the Y-axis direction are transmitted to the engaged bodies 27 and 17, respectively, so that the binding rod members 1 and 2 open and close in synchronization with each other. Since the engaging protrusions 16 and 26 are deviated from the rotation centers of the corresponding binding rod members 1 and 2, that is, the axes C1 and C2 of the shaft bodies J1 and J2, a gentle circular motion is performed. Therefore, the engaged bodies 17 and 27 have a shape that allows the arc motion, that is, a groove shape that is open to the outside.

Next, the operation of the binding tool 0 will be described.

10 to 21 show a binding state (binding rod member 1, 2) in which the binding rod members 1 and 2 are closed and the back member 3 is arranged at the lock position (L) to prevent the binding rods 12 and 22 from opening. 2 is in the closed position (R)). On the other hand, in FIGS. 22 to 34, the binding rod members 1 and 2 are open, the back member 3 is arranged at the unlock position (U), and the binding rods 12 and 22 are opened (binding rod). The state in which the members 1 and 2 are in the maximum opening position (Q)) is shown.

In the binding state, the binding rod members 1 and 2 are in the closed position (R), and the binding rods 12 and 22 are engaged in a ring shape. The back member 3 is in the lock position (L), and the binding rod members 1 and 2 are prohibited from opening. In this binding state, as shown in FIGS. 17 and 19, the shaft bodies J1 and J2 corresponding to a part of the base end side of the mooring portions 13 and 23 of the first and second binding rod members 1 and 2. The rotation-prohibited portions J1b and J2b are engaged with each other, and the opening operations of the first and second binding rod members 1 and 2 are prohibited. Further, as shown in FIGS. 16 and 18, the bulging portions 15 and 25 of the first and second binding rod members 1 and 2 are engaged with the engaging step portion 34d of the corresponding partition wall 34, respectively. Also in this respect, the opening operation of the first and second binding rod members 1 and 2 is prohibited. Further, as shown in FIGS. 16 and 18, the protruding portions 14 and 24 of the first and second binding rod members 1 and 2 are inserted into the corresponding internal spaces 34s, and in this respect as well, the first and second binding rod members 1 and 2. The opening operation of the second binding rod members 1 and 2 is prohibited. Therefore, the paper sheets S can be stably bound by the binding tool 0.

Further, in this binding state, as shown in FIGS. 17 and 19, the mooring portions 13 and 23 of the binding rod members 1 and 2 are located below the shaft bodies J1 and J2 (on the back wall 35 side of the back member 3). In addition to wrapping around, as shown in FIGS. 16 and 18, the protruding portions 14 and 24 of the binding rod members 1 and 2 are inserted into the corresponding internal spaces 34s, and further, FIGS. 13, 14 and 14 and FIGS. As shown in FIG. 21, since the detachment prevention pins 18 and 28 of the binding rod members 1 and 2 are loosely fitted to the tip end 33 and the base end 32 of the back member 3, respectively, they are impacted by dropping or the like. Even in this case, it is possible to effectively prevent the binding rod members 1 and 2 from being separated from the back member 3.

Further, in the bound state, as shown in FIGS. 10 to 12, the restraint member 39 is stopped at the restraint position (t), and the locking projection 393 of the restraint member 39 is inside the base end housing 38 of the back member 3. It is inserted and faces the tip of the detachment prevention pin 28 of the binding rod member 2. Therefore, the back member 3 is restricted from sliding in the tip direction with respect to the binding rod members 1 and 2.

When the restraint member 39 is rotated to the restraint release position (v) rotated 180 degrees upward from the above-described binding state, the locking projection 393 of the restraint member 39 becomes a back member as shown in FIGS. 22 to 25. The base end housing 38 of 3 is pulled out, and the slide restriction of the back member 3 is released. That is, the back member 3 can be slid toward the tip end. At this time, an arrow 39a is engraved on the top wall 392 of the inverted restraint member 39, suggesting a slidable direction of the back member 3.

When the back member 3 is slid in the direction indicated by the arrow 39a, that is, in the direction of the tip and moved to the unlock position (U), the binding state is released and the binding state is released. In this unbinding state, the binding rod members 1 and 2 are in the maximum opening position (Q), and as shown in FIGS. 30 and 32, the mooring portions 13 of the first and second binding rod members 1 and 2 The rotation-prohibited portions J1b and J2b of the shaft bodies J1 and J2 corresponding to the 23 are disengaged, and the mooring portions 13 and 23 are entirely the rotation-allowed portions J1a and J2a of the shaft bodies J1 and J2. Move to. Further, as shown in FIGS. 29 and 31, the engagement between the bulging portions 15 and 25 of the first and second binding rod members 1 and 2 and the engaging step portion 34d of the corresponding partition wall 34 is also released. To. Then, as shown in FIGS. 29 and 31, the protruding portions 14 and 24 of the first and second binding rod members 1 and 2 come out of the internal space 34s. Therefore, the first binding rod member 1 can rotate around the axis C1 of the first shaft body J1, and the second binding rod member 2 rotates around the axis C2 of the second shaft body J2. It will be possible. When the back member 3 is slid from the locked position (L) to the unlocked position (U) in the tip direction in this way, it is provided at the base end portion 32 of the back member 3 as shown in FIGS. 22 and 23. The wedge-shaped cam 383 is inserted between the base 11 of the first binding rod member 1 and the base 21 of the second binding rod member 2 and urges the two binding rod members 1 and 2 to open. It will be.

As shown in FIGS. 29 to 32, the opened first and second binding rod members 1 and 2 are locked to the locking surfaces J1s and J2s provided on the shaft bodies J1 and J2 to reach the maximum open position (Q). ) To stop. In this unbound state, the paper sheets S can be attached, removed, or replaced.

After the paper leaf insertion / removal work is completed, when the binding rod 12 of the first binding rod member 1 and the binding rod 22 of the second binding rod member 2 are urged in the opposite direction, the double binding rod member 1 2 returns to the bound state, in other words, returns to the closed position (R), and the back member 3 self-returns to the locked position (L) by the urging force of the tension coil spring 4, and FIGS. The original binding state as shown in FIGS. 10 to 21 is obtained. In addition, in FIGS. 10 to 34, a pattern is attached to the portion of the back member 3 other than the restraint member 39.

As described above, according to the present embodiment, the first shaft body J1 that pivotally supports the first binding rod member 1 and the second shaft body J2 that pivotally supports the second binding rod member 2. Is deviated in the width direction (X-axis direction) orthogonal to the axial direction (Z-axis direction), so that compared with the case where both binding rod members 1 and 2 are rotated around a common axial center. The degree of opening can be made larger. Moreover, when viewed along the axial direction (Z-axis direction) in the bound state, the first axial body J1 and the second mooring portion 23 partially overlap, and the second axial body J2 Since the first mooring portion 13 is arranged so as to partially overlap with each other and the two axes are designed to be as close to each other as possible, the dimensions in the width direction (X-axis direction) can be made compact.

Further, in this embodiment, since the above-mentioned two types of opening prevention mechanisms are provided, it is possible to effectively prevent the binding rods 12 and 22 from opening against the intention of the user. Since a plurality of types of opening prevention mechanisms are studded in various places, it is possible to suppress the concentration of stress, and it is possible to suppress the improper opening operation of the binding rods 12 and 22 without causing damage.

Further, in this embodiment, since the above-mentioned three types of detachment prevention mechanisms are provided, the back member 3 is disengaged from the binding rod members 1 and 2 even if it receives an impact due to dropping or the like, and loses its function as a binding tool. Can be effectively suppressed. Moreover, since a plurality of types of detachment prevention mechanisms are studded in various places, it is possible to suppress the concentration of stress, and it becomes easy to lengthen the binding tool 0.

Further, in this embodiment, in addition to the wedge-shaped cam 383, the binding rod synchronization mechanism described above is provided on both the base end side and the tip end side, so that the first and second binding rod members 1 and 2 are provided. It can be linked more smoothly.

The present invention is not limited to the embodiments described above.

It is also conceivable to arrange the first shaft body that supports the first binding rod member and the second shaft body that supports the second binding rod member so that the axes are aligned with each other. By doing so, the opening degree can be made larger, and it is possible to avoid a complicated shape in order to prevent interference between the binding rod members.

The opening prevention mechanism and the detachment prevention mechanism are not limited to those according to the above-described embodiment, and various mechanisms may be adopted.

The binding rod synchronization mechanism is not limited to the one according to the above-described embodiment, and various types may be adopted, or the binding rod synchronization mechanism may be omitted.

In addition, various modifications may be made as long as the gist of the present invention is not impaired.

The present invention can be applied to a binding tool for binding paper leaves.

0 ... Binding tool 1 ... First binding rod member 12 ... First binding rod 13 ... First mooring part 14 ... Protruding part 16 ... Engagement protrusion 17 ... Engaged body 2 ... Second binding rod member 22 ... Second binding rod 23 ... Second mooring part 24 ... Protruding part 26 ... Engaging protrusion 27 ... Engagement body 3 ... Back member 34s ... Internal space J1 ... First shaft body J2 ... Second shaft body (L) )… Lock position (U)… Unlock position

Claims (5)

A binding tool including a back member having a shaft body that serves as an axis of a hinge, and a set of binding rod members that engage with the shaft body and rotate around the axis to open and close the binding rod.
The width at which the first shaft body with which the first binding rod member engages and the second shaft body with which the second binding rod member engages with the back member are orthogonal to each other in the axial direction thereof. It is provided so as to be biased in the direction,
The first binding rod member is provided with a first mooring portion that extends in the circumferential direction around the axis of the first shaft body and engages with the outer periphery of the first shaft body.
The second binding rod member is provided with a second mooring portion that extends in the circumferential direction around the axis of the second shaft body and engages with the outer circumference of the second shaft body.
When viewed along the axial direction, the first shaft body and the second mooring portion partially overlap, and the second shaft body and the first mooring portion partially overlap. A binding tool that is wrapped and placed. An internal space is formed in the back member so as to be shielded from the locking direction orthogonal to the axial direction and the width direction.
1. The binding rod member is provided with a protruding portion that projects in the axial direction of the shaft body and is accommodated in the internal space in a state where the binding rod member is rotated so as to close the binding rod. The binding tool described. The back member is slidable with respect to the binding rod member along the axial direction, and a lock position that prohibits the binding rod member from rotating in a direction that opens the binding rod and an unlock that allows this. The position can be selectively taken,
When the back member takes the lock position, the shaft body and the mooring portion interfere with each other to prevent the binding rod member from rotating in the direction of opening the binding rod.
The first or second aspect of claim 1 or 2, which allows the binding rod member to rotate in the direction of opening the binding rod without interfering with the shaft body and the mooring portion when the back member takes the unlocked position. Binding tool. The back member is slidable with respect to the binding rod member along the axial direction, and a lock position that prohibits the binding rod member from rotating in a direction that opens the binding rod and an unlock that allows this. The position can be selectively taken,
When the back member takes the lock position, it is prohibited that the binding rod member rotates in the direction of opening the binding rod due to the interference between the internal space and the protruding portion.
The binding according to claim 2, wherein when the back member takes the unlock position, the internal space and the protruding portion do not interfere with each other and the binding rod member is allowed to rotate in the direction of opening the binding rod. Ingredients. One of the first binding rod member and the second binding rod member is provided with an engaging protrusion, and the other is provided with an engaged body that engages with the engaging protrusion.
The binding tool according to claim 1, 2, 3 or 4, wherein the engaging protrusion and the engaged body are arranged at positions deviated from the shaft body when viewed along the axial direction.

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