JPWO2014208237A1 - Binding tool - Google Patents

Abstract

Provided is a binding tool that can secure a holding force of a bound sheet or more while keeping energy required for operation low. It is possible to bind these sheets by press-contacting a part of a sheet, which is formed by laminating a plurality of sheets between the teeth at an inclined surface portion of a pair of teeth, with an expansion of the sheet material. It is a binding tool, and (1) the absolute value of the inclination angle with respect to the tooth contact / separation direction of the inclined surface portion is less than 38 °, (2) corresponds to the shortest distance between the inclined surface portions of the pair of teeth. (3) The paper material, wherein the length in the direction perpendicular to the normal of the main pressure contact region by the two inclined surface portions is less than 0.18 mm in a state in which the normals are brought close to 0.09 mm. It is characterized by satisfy | filling at least 1 among the expansion | extension rates of more than 1.32 and 1.60 or less. [Selection] Figure 15

Description

  The present invention relates to a binding tool that does not use a metal needle among binding tools that integrally bind the ends of a plurality of stacked sheets.

  Conventionally, as a binding tool of this type, a part of a sheet, which is arranged by stacking a plurality of sheets between a pair of teeth contacting and separating in a certain direction, is bound by compressing the sheet in the thickness direction by the teeth. There are known (see, for example, Patent Document 1).

  However, the conventional apparatus has a problem that the operation force applied to the operation handle becomes excessive in order to compress the sheet so as to exhibit a certain holding force. In other words, when the operation handle is operated within a practical operating force range, there is a problem that the holding force between the sheets is not practical.

  Such a problem is not limited to the manual operation of the operation handle, and an actuator having a large capacity is required even when the operation handle is operated electrically.

Japanese Utility Model Publication No. 36-13206

  The present invention pays attention to the above points, and an object thereof is to provide a binding tool that can secure a holding force of a certain level or more while keeping energy required for operation low.

  The present invention employs the following configuration in order to solve the above-described problems. That is, the binding tool according to the present invention includes a pair of teeth that contact and separate in a certain direction, and an inclined surface portion that forms a predetermined inclination angle with respect to the contact and separation direction. A binding tool capable of binding these sheets by press-contacting a part of the sheets arranged by laminating a plurality of sheets between the teeth at the surface portion with accompanying expansion of the sheet material, (1) The absolute value of the inclination angle with respect to the contact / separation direction of the teeth of the inclined surface portion is less than 38 °, (2) the length of the normal corresponding to the shortest distance between the inclined surface portions of the pair of teeth is 0.09 mm The length of the main pressure contact area formed by the two inclined surface portions in a direction perpendicular to the normal line is less than 0.18 mm in the state of being close to each other, and (3) the elongation rate of the paper material exceeds 1.32 and 1 Satisfy at least one of 60 or less It is characterized in.

  Here, the “paper material” is a concept indicating all materials constituting the paper, and includes paper, plastic fibers, and the like.

  Further, the “main pressure contact area” is a portion where the sheet is most compressed between the inclined surface portions of the teeth. Specifically, when both the inclined surface portions are flat, the inclined surface portions face each other, In the case where at least one of the inclined surface portions is linear or dot-like, it indicates the closest portion between the inclined surface portions.

A preferred embodiment of each tooth includes a plurality of crest-side curved portions forming a tooth crest, a plurality of trough-side curved portions forming a trough of teeth, and ends and trough-side curved surfaces of these crest-side curved portions. A plurality of the inclined surface portions formed continuously between the end portions of the portions, and a tooth surface having a corrugated cross section is formed by the mountain side curved surface portion, the valley side curved surface portion, and the inclined surface portion. Is mentioned.

  The absolute value of the inclination angle with respect to the tooth contact / separation direction of the inclined surface portion is preferably 25 ° or more and less than 38 °.

  A direction perpendicular to the normal of the main pressure contact region by the two inclined surface portions in a state where the normal corresponding to the shortest distance between the inclined surface portions of the pair of teeth is close to 0.09 mm. The length is preferably more than 0 mm and less than 0.18 mm.

  The elongation rate of the paper material is preferably 1.36 or more and 1.47 or less.

  It is preferable that half of the length of the mountain-side curved surface portion along the waveform is equal to or longer than the length of the inclined surface portion along the waveform. More preferably, the half of the length along the waveform of the peak side curved surface portion and the length along the waveform of the inclined surface portion are equal.

  Here, “the length along the waveform of the mountain side curved surface portion” is a concept indicating the length of the geodesic line from the apex of the mountain side curved surface portion to the boundary with the inclined surface portion. Further, “the length along the waveform of the inclined surface portion” is a concept indicating the shortest distance between the boundary between the mountain side curved surface portion and the boundary between the valley side curved surface portion.

  Since the present invention is configured as described above, the bound paper can ensure a certain level of holding force while keeping the energy required for operation low.

The side view of the binding tool concerning 1st embodiment of this embodiment. The side view of the binding tool. The top view which shows the principal part of the binding tool and the booklet bound by this binding tool. AA line sectional view of Drawing 3. The top view of the binding tool. The front view of the binding tool. The disassembled perspective view of the binding tool. The center sectional view of the binding tool. The center sectional view of the binding tool. The disassembled perspective view which shows the tooth holder and main shaft of the binding tool. The front view which shows the tooth | gear of the binding tool. The top view which shows the 1st tooth | gear of the binding tool. BB sectional drawing of FIG. The CC sectional view taken on the line of FIG. D partial enlarged view of FIG. Schematic which shows the preparation procedure of the tooth | gear of the binding tool. Schematic which shows the preparation procedure of the tooth | gear of the binding tool. Operation | movement explanatory drawing of the binding tool. Operation | movement explanatory drawing of the binding tool. Operation | movement explanatory drawing of the binding tool. Operation | movement explanatory drawing of the binding tool. Operation | movement explanatory drawing of the binding tool. Schematic which showed typically the action | operation of the binding tool. The table | surface which shows the Example and comparative example of the binding tool. The table | surface which shows the reference example of the binding tool. The side view of the binding tool concerning 2nd embodiment of this embodiment. The disassembled perspective view of the binding tool. The center sectional view of the binding tool. The center sectional view of the binding tool. The disassembled perspective view which shows the tooth holder, teeth, and main shaft of the binding tool. The perspective view which shows the tooth | gear of the binding tool. The front view which shows the tooth | gear of the binding tool. Operation | movement explanatory drawing of the binding tool. The enlarged view which shows the principal part of the binding tool. The enlarged view which shows the principal part of the binding tool. The enlarged view which shows the principal part of the binding tool. The enlarged view which shows the principal part of the binding tool. The top view which shows the booklet concerning the modification of this invention. The top view which shows the booklet concerning the other modification of this invention. The top view which shows the booklet concerning the further another modification of this invention. The top view which shows the booklet concerning the further another modification of this invention. The front view which expands and shows the tooth concerning the modification of this invention. The top view of the tooth concerning the modification.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 25, the binding tool 1 includes a plurality of sheets P1 stacked between a pair of teeth 6 and 7 that contact and separate in a certain direction. A booklet P can be formed by binding the plurality of sheets P1 to each other by binding the sheets P1 with the sheet P1 sandwiched therebetween. More specifically, the binding tool 1 has a pair of teeth 6 and 7 that make contact and separation in a certain direction, and inclined surface portions 62 and 72 that form predetermined inclination angles A1 and A2 with respect to the contact and separation direction, respectively. A part of the sheet P1 that is provided and is laminated with a plurality of sheets between the teeth 6 and 7 at the inclined surface portions 62 and 72 of the paired teeth 6 and 7 is pressed while the sheet material is stretched. Thus, it is possible to bind these sheets P1.

As shown in FIGS. 3 and 4, the booklet P is formed by bundling a plurality of sheets P1, and these sheets P1 are joined to each other at one press portion P2 set on the edge P11. Yes. One sheet P1 used in this embodiment has 64 grams / m @ 2 and a thickness dimension of 0.1.
Although the copy paper P1 is 08 to 0.09 mm, other paper P1 may be used as long as it has the effects described below. For example, drawing paper, slips, receipt paper, inkjet printer paper, glossy paper, recycled paper, etc. Various paper materials such as paper copy paper can be used. The sheets P1 to be bound are preferably of the same quality, but different sheets P1 can be bound together. In the binding tool 1 in this embodiment, it is possible to bind about 2 to 5 copy sheets P1 described above.

  Hereinafter, the press part P2 will be described.

  As shown in FIGS. 3 and 4, the press portion P2 has a rectangular shape in plan view, so that the width dimension L7 is less than 0.6 to 4.0 mm and the length dimension L8 is less than 8 to 20 mm. It is good to set to. In particular, when used as an office binding tool 1, it is preferable to set the width dimension L7 to be about 1.4 mm and the length dimension L8 to be about 10 mm. The sheet P can be held at P2. That is, when the width dimension L7 and the length dimension L8 are within this range, the relationship between the exclusive area of the press part P2, the force necessary for the operation, and the holding force necessary for binding the paper P1. The balance is particularly good. The reason why the length L8 is preferably less than 8 to 20 mm will be described later.

  Further, as shown in FIG. 4, the press portion P <b> 2 has a cross-sectional waveform shape, and in this embodiment, is set to 10 peaks. The number of ridges of the press part P2 is not limited to 10 ridges and can be variously changed. However, if the number of peaks in the press portion P2 increases within a limited range, there is a problem that the inclination angles A1 and A2 of the peaks are too small and the paper P1 is easily torn. On the other hand, when the number of ridges is reduced within a limited range, the press portion P2 has an excessively large inclination angle A1 and A2, and the force is distributed over the area to be compressed, which is applied per unit area. The problem that a load will become small arises. That is, there is a problem in that it cannot be bound properly.

  The press part P2 is compression-molded by a mountain-shaped deformed part P21 formed by the mountain side curved surface part 61 of one tooth 6 and the valley side curved surface part 73 of the other tooth 7 and the inclined surface parts 62 and 72 of both teeth 6 and 7. The inclined compression part P22 formed and a plurality of valley-shaped deformed parts P23 formed by the valley-side curved surface part 63 of one tooth 6 and the mountain-side curved part 71 of the other tooth 7 form a waveform in a sectional view. Is. That is, the press portion P2 is formed into a shape having such a cross-sectional waveform by extending each sheet material forming a plane by the strong pressure of the teeth 6 and 7. In FIG. 3, for the sake of convenience, a line is attached to an intermediate point between the apex of the mountain-shaped deformation portion P21 and the valley bottom of the valley-shaped deformation portion P23.

  Here, the “paper material” is a concept indicating all the materials constituting the paper P1, and includes paper, plastic fibers, and the like. The elongation rate of the paper material is preferably more than 1.32 and not more than 1.60. More preferably, the expansion rate of the paper material is 1.36 or more and 1.47 or less, and in this embodiment, the expansion rate of the paper material is set to 1.44.

  In addition, it is guessed based on the following principles that the paper P1 is bound with a constant holding force by extending and compressing the fibers of the paper material. That is, it is considered that the adjacent sheets P1 are held so as not to be separated from each other by an anchor effect and a hydrogen bonding effect described later.

  The anchor effect is that the fibers of the paper material are stretched and exposed, and the fibers of the adjacent paper material are entangled in the compression direction, particularly in the portion sandwiched between the inclined surface portions 62 and 72. On the other hand, it means a phenomenon accompanied by a great resistance to shear peeling in the direction inclined.

  The hydrogen bonding effect is due to the bonding between OH groups (hydroxyl groups) that are close to each other by the compressive force between the adjacent papers P1, more specifically, without the moisture due to the strong compressive force, the paper material of one paper P1. Based on a phenomenon in which OH groups contained in cellulose molecules constituting fibers are directly bonded to OH groups of cellulose molecules constituting fibers of paper material of other paper P1 located in the vicinity of the OH groups. The hydrogen bonding effect becomes more prominent as the force for compressing the sheets P1 increases.

  When the inclination of the teeth 6 and 7 is relatively gentle, specifically, the absolute values of the inclination angles A1 and A2 with respect to the contact / separation direction of the teeth 6 and 7 of the inclined surface portions 62 and 72 are 38 ° or more. The anchor effect is reduced. Moreover, since the force which compresses the paper P1 mutually by compressing within the comparatively wide area of the said inclined surface parts 62 and 72 is disperse | distributed, the said hydrogen bond also becomes small. On the other hand, when the inclination of the teeth 6 and 7 is relatively steep, specifically, the absolute values of the inclination angles A1 and A2 with respect to the contact and separation directions of the teeth 6 and 7 of the inclined surface portions 62 and 72 are 38 °. Below this, the anchor effect is exhibited. In addition, since the force for compressing the sheets P1 is concentrated by compressing the inclined surfaces 62 and 72 within a relatively small area, a relatively large number of hydrogen bonds can be generated.

  Further, when the elongation ratio is 1.32 or less, a sufficient anchor effect cannot be obtained and the hydrogen bonding effect is also reduced. Therefore, there arises a problem that the holding force of the paper P1 is not practical. On the other hand, if the expansion ratio is larger than 1.60, there arises a problem that the paper P1 is torn or the energy required for the operation becomes excessive. That is, if the elongation rate is increased within a range where the paper P1 is not torn, more fibers can be exposed and the above-described anchor effect and hydrogen bonding effect can be easily developed. In other words, if the elongation ratio is 1.32 or less, a large anchor effect or hydrogen bonding effect cannot be expected within a practical operating force range.

  The binding tool 1 used when binding the paper P1 in this way will be described with reference to FIGS. 1 to 3 and FIGS.

  As shown in FIGS. 1 to 9 and FIGS. 18 to 22, the binding tool 1 includes a plurality of stacked sheets P1 between teeth 6 and 7 that make a pair approaching and separating in a certain direction. A first receiving base 2 for urging the first teeth 6 in the pinching direction is capable of binding the paper P1 with both teeth 6 and 7 and binding the paper P1. The second receiving base 3 for urging the second teeth 7 in the clamping direction, the main shaft 4 pivotally attaching the receiving bases 2 and 3 at the tip vicinity portions 2a and 3a, and the first The urging mechanism 5 for applying a clamping force to the teeth 6 and 7 by pushing the base end portions 2b and 3b of the second receiving bases 2 and 3 to each other, and the main shaft 4 rotating. A first tooth holder 8 which is directly supported so as to hold the first teeth 6, and a second tooth which is directly supported rotatably on the main shaft 4. It is obtained by a second tooth holder 9 for holding the teeth 7. The binding tool 1 has a tooth tip 6b of the first tooth 6 and an axis 4a of the main shaft 4 along a virtual reference plane 11 on which the paper P1 to be bound is placed.

  As shown in FIGS. 1, 2, 5 to 9, and 18 to 22, the first receiving base 2 urges the first teeth 6 in the clamping direction at the tip vicinity portion 2 a. belongs to. The first receiving base 2 includes a base main body 21 supported by the main shaft 4, and a hard tooth receiving member 22 that is held by the base main body 21 and presses the base end 6a of the corresponding tooth 6 in the clamping direction. A plate member 23 disposed between the tooth receiving member 22 and the base body 21 is provided.

  As shown in FIGS. 1, 2, 5 to 9 and 18 to 22, the base body 21 includes a bottom plate 24, a pair of side walls 26 erected from both side edges of the bottom plate 24, and these It comprises a front wall 25 that extends inward from the front ends of the side walls 26 and a rear wall 27 that extends upward from the rear end of the bottom plate 24, and bends the sheet metal material. By doing so, it is molded integrally. The bottom plate 24 is provided with a bent portion 241. A shaft hole 261 through which the main shaft 4 passes is provided in the vicinity of the front end of the side wall 26.

  As shown in FIGS. 1, 2, 8, 9, and 18 to 22, the tooth receiving member 22 has a reaction force from the first teeth 6 during the clamping operation of the first receiving base 2. It is intended to suppress intensive action at a specific location, and is made of a hard material such as spring steel.

  As shown in FIGS. 1, 2, 6, 8, 9, and 18 to 22, the plate member 23 is a plate-like member interposed between the tooth receiving member 22 and the base body 21. belongs to.

  As shown in FIGS. 1 to 3, 5 to 9, and 18 to 22, the second receiving base 3 urges the second teeth 7 in the clamping direction at the tip vicinity portion 3 a. belongs to. The second receiving base 3 includes a base main body 31 supported by the main shaft 4 and a hard tooth receiving member 32 that is held by the base main body 31 and presses the base end 7a of the corresponding tooth 7 in the clamping direction. A plate member 33 disposed between the tooth receiving member 32 and the base body 31 is provided.

  As shown in FIGS. 1 to 3, FIGS. 5 to 9 and FIGS. 18 to 22, the base body 31 includes a top plate 34 and a pair of side walls 36 suspended from both side edges of the top plate 34. And a front wall 35 extending inward from the front ends of the side walls 36 and a rear wall 37 extending downward from the rear end of the top plate 34. Are integrally formed by bending. That is, the second receiving base 3 has a U-shaped cross section having side walls 36 on both sides, and the side wall 36 is provided on the operation handle 51 in a state where the operation handle 51 described later is not operated. The cut-out part 361 into which the pressed member 53 described later enters is provided. A shaft hole 362 through which the main shaft 4 passes is provided in the vicinity of the front end of the side wall 36. Further, a shaft hole 363 through which a sub shaft 10 described later passes is provided in the vicinity of the rear end of the side wall 36. The top plate 34 is provided with a bulging portion 341 for reinforcement.

  As shown in FIGS. 1, 2, 8, 9, and 18 to 22, the tooth receiving member 32 has a reaction force from the second tooth 7 when the second receiving base 3 is pressed. It is intended to suppress intensive action at a specific location, and is made of a hard material such as spring steel.

  As shown in FIGS. 1, 2, 6, 8, 9, and 18 to 22, the plate member 33 is a plate-like member interposed between the tooth receiving member 32 and the base body 31. belongs to.

  As shown in FIGS. 1, 2, 5, 7 to 10, and FIGS. 18 to 22, the main shaft 4 includes the first and second receiving bases 2 and 3 in front end portions 2 a and 3 a. It is something that pivots on. The main shaft 4 not only pivots the first receiving base 2 and the second receiving base 3, but also connects the first and second tooth holders 8 and 9 with the teeth 6 and 7. It also functions as a common shaft that supports the direction.

  As shown in FIGS. 1, 2, 5 to 10, and 18 to 22, the urging mechanism 5 pushes predetermined portions of the first and second receiving bases 2 and 3 apart. For applying a clamping force to the teeth 6 and 7, more specifically, by pushing the base end portions 2b and 3b of the first and second receiving bases 2 and 3 to each other. This is for applying a clamping pressure to the first teeth 6 and the second teeth 7. The urging mechanism 5 includes an operation handle 51 provided on the second receiving base 3, an elastic repulsion member 52 provided on the first receiving base 2, and an outer peripheral surface 531 in contact with the elastic repulsion member 52. In this way, the predetermined portion of the first receiving base 2 is separated from the predetermined portion of the second receiving base 3 through the elastic repulsion member 52 as the operating handle 51 is provided. And a shaft-like pressing member 53 that presses against the shaft.

  As shown in FIGS. 1, 2, 5 to 9, and 18 to 22, the operation handle 51 has a U-shaped cross section having side walls 512 on both sides. The second receiving base 3 is configured to be fitted on the second receiving base 3 while being operated to the position (L). That is, both side walls 512 of the operation handle 51 are brought into contact with the outer surface of the side wall 36 of the second receiving base 3, and both side walls 512 at the base end portion of the operation handle 51 are connected to the second receiving base 3. Via the subshaft 10, it is pivotally attached to the both side walls 36 in the base end part 3b. The top plate 511 of the operation handle 51 is provided with a bulging portion 514 for reinforcement. A shaft hole 513 through which the sub shaft 10 passes is provided in the vicinity of the rear end of the side wall 512. Further, a pressing member 53 is installed at a position eccentric from the shaft hole 513 of the both side walls 512.

  As shown in FIGS. 1, 2, 7, 8, 9, and 18 to 22, the pressing member 53 is attached to the operation handle 51 such that an outer peripheral surface 531 is in contact with the elastic repulsion member 52. The base end 2b of the first receiving base 2 is separated from the base end 3b of the second receiving base 3 through the elastic repulsion member 52 in accordance with the operation of the operation handle 51. It is a shaft that presses in the direction.

  As shown in FIGS. 1, 2, 5, 7 to 9, and 18 to 22, the elastic repulsion member 52 includes a rubber member main body 521 having a rectangular parallelepiped shape and an upper surface of the member main body 521. The member main body 521 is attached to the upper surface of the base end portion 2 b of the first receiving base 2. The rubber pressing plate 522 has a top plate portion 523 for distributing and transmitting the load from the pressing member 53 to the member main body 521, and a slip-preventing member that is suspended downward from the front edge and both side edges of the top plate portion 523. The restricting plate portion 524 is provided.

  The operation handle 51 can rotate between a standby position (F) shown in FIGS. 1, 8, and 18 to a final position (L) shown in FIGS. 2, 5, 6, 9, and 22. The elastic repulsion member 52 is compressed by a predetermined stroke by the pressing member 53 while reaching the final position (L) from the standby position (F). In this embodiment, the stroke is set to about 3.8 mm.

  Thus, the urging mechanism 5 is connected to the base end portion 3b of the second receiving base 3 via the sub shaft 10 as shown in FIGS. The operation handle 51 is attached to the shaft, and the pressing member 53 is fixed at a position eccentric from the sub-shaft 10 of the operation handle 51. The operation handle 51 is attached to the first and second receiving bases 2, 3. The pressing member 53 is configured to move toward the base ends 2d and 3d while being pressed against the elastic repulsion member 52 by being rotated toward the distal ends 2c and 3c. The urging mechanism 5 is configured such that the pressing member 53 is positioned closer to the first receiving base 2 than the virtual reference surface 11 in a state where the operation handle 51 is operated to the final position (L), and the sub shaft 10 is set to be located closer to the second receiving base 3 than the virtual reference plane 11.

  2 and 23, the binding tool 1 has a projection distance L5 with respect to the virtual reference plane 11 from the tooth tips 6b, 7b of the teeth 6, 7 to the axis 4a of the main shaft 4. When the ratio of the projection distance L6 to the virtual reference plane 11 from the axis 4a of the main shaft 4 to the axis 10a of the sub-shaft 10 is 1: X, the X is 1 to 6.2. What is comprised is preferable. When X is smaller than 1, it is necessary to unreasonably increase the lever ratio of the operation handle 51 under the condition that a practical number of sheets P1, for example, five sheets P1 are bound by manual operation. There is. Therefore, the operation handle 51 becomes larger than the receiving bases 2 and 3, and the balance of the entire binding tool 1 is deteriorated or the entire binding tool 1 is increased in size. On the other hand, when X becomes larger than 6.2, in order to bind a practical number of sheets P1, the size of each component including the receiving bases 2 and 3 is increased.

  In order to manually bind the paper P1, the clamping force of the teeth 6 and 7 with respect to the operation force applied to the operation handle 51 is required to be 20 times or more. Therefore, in order to bind a practical number of sheets P1 without causing an increase in the size of the binding tool 1 or a loss of balance, it is desirable to satisfy the above conditions. In the present embodiment, the projection distance L5 with respect to the virtual reference plane 11 from the tooth tips 6b, 7b of the teeth 6, 7 to the axis 4a of the main shaft 4 is about 11.0 mm. The projection distance L6 from the axis 4a to the axis 10a of the sub-shaft 10 with respect to the virtual reference plane 11 is about 50.0 mm, and the X is set to 4.5. If set, the entire binding tool 1 can be designed with good balance.

  Hereinafter, the first tooth 6 will be described.

  As shown in FIGS. 1, 2, 6, 8 to 15, and 18 to 22, the first tooth 6 includes a plurality of ridge-side curved surface portions 61 that form a ridge of the tooth 6, and the tooth 6. A plurality of valley-side curved surface portions 63 that form valleys of the plurality, and a plurality of the inclined surface portions 62 that are continuously formed between the end portion 611 of the mountain-side curved surface portion 61 and the end portion 631 of the valley-side curved surface portion 63, respectively. The crest-side curved surface portion 61, the trough-side curved surface portion 63, and the inclined surface portion 62 form a tooth surface 6c having a corrugated cross section. The first tooth 6 is made of a plate-like metal material that can be easily pressed with the width of the tooth surface 6c set to be less than 0.6 to 4.0 mm.

As shown in FIGS. 6, 11, and 15, the first tooth 6 is set such that the absolute value of the inclination angle A <b> 1 with respect to the contact / separation direction of the tooth 6 of the inclined surface portion 62 is less than 38 °. Yes. The absolute value of the inclination angle A1 with respect to the contact / separation direction of the teeth 6 of the inclined surface portion 62 is 25 ° or more and 38.
What is less than ° is preferable. If the absolute value of the inclination angle A1 is less than 25 °, the angle of the first teeth 6 becomes steep and the paper P1 is easily torn. On the other hand, when the absolute value of the inclination angle A1 exceeds 38 °, the anchor effect and the hydrogen bonding effect described above cannot be sufficiently exhibited. Therefore, in order to obtain a sufficient binding force, a large operating force is required, which is not within the practical range when manually operating. If the absolute value of the inclination angle A1 is within the above-described range, the sheet P1 can be efficiently stretched and compressed without breaking the paper P1.

  As shown in FIGS. 6, 11, and 15, the first tooth 6 has a half length L <b> 11 along the waveform of the mountain-side curved surface portion 61, and a length along the waveform of the inclined surface portion 62. It is more than L12. In addition, it is preferable that the said 1st tooth | gear 6 has the same half L11 of the length along the said waveform of the said peak side curved surface part 61, and the length L12 along the said waveform of the said inclined surface part 62. Here, “half the length L11 along the waveform of the mountain side curved surface portion 61 (L11)” is a concept indicating the length of the geodesic line from the apex of the mountain side curved surface portion 61 to the boundary with the inclined surface portion 62. . The “length L12 of the inclined surface portion 62 along the waveform” is a concept indicating the shortest distance between the boundary with the mountain-side curved surface portion 61 and the boundary with the valley-side curved surface portion 63. In the present embodiment, when the first teeth 6 mesh the mountain side teeth 6 and the valley side teeth 7, the half L11 of the length along the waveform of the mountain side curved surface portion 61 and the inclined surface portion 62. The length L12 along the waveform is set to be approximately equal to the half L13 of the length along the waveform of the mountain-side curved surface portion 71 facing the valley-side curved surface portion 63. If the half L11 of the length along the waveform of the ridge-side curved surface portion 61 is set to be longer than the length L12 along the waveform of the inclined surface portion 62, the sheet material is stretched to cause deformation. It becomes easy. However, in order to prevent the paper P1 from being pulled excessively or to prevent a part of the paper P1 from being overloaded, the half L11 of the length along the waveform of the peak side curved surface portion 61 is: It is preferable to make it equal to the length L12 of the inclined surface portion 62 along the waveform.

  The “elongation rate” in this specification is defined as follows. That is, when the crest-side teeth 6 and the trough-side teeth 7 are engaged with each other, half the length L11 along the waveform of the crest-side curved surface portion 61 and length L12 along the waveform of the inclined surface portion 62 The sum of the length dimension L13 along the waveform of the mountain side curved surface portion 71 facing the valley side curved surface portion 63 is Y, and the center point of the mountain side curved surface portion 61 and the valley side curved surface portion 63 are When the length dimension L14 obtained by projecting the line connecting the center point of the mountain-side curved surface portion 71 facing to the virtual reference plane 11 is Z, the expansion ratio is expressed by Y / Z.

  As shown in FIGS. 6 and 10 to 15, the first tooth 6 includes a tooth surface 6 c having a corrugated cross section having a peak and a valley as described above, and a tooth tip 6 b. Is provided with an inclined guide portion 66 for guiding the paper P1 to the paper insertion gap 12. More specifically, the first tooth 6 is formed by stamping a metal material 60 by press working as schematically shown in FIGS. 16 and 17. Chamfered portions 64 and 65 are formed on both sides in the thickness direction. These chamfered portions 64 and 65 are formed by performing cutting or plastically deforming with a press die on both sides in the thickness direction of the metal material 60.

  As shown in FIGS. 13 and 14, the first tooth 6 has one chamfered portion 64 set larger than the other chamfered portion 65. In this embodiment, the chamfering depth D2 of the chamfered portion 65 located on the front side of the tooth 6 is set to be shallower than the chamfered depth D1 of the chamfered portion 64 located on the back side of the tooth 6. An intermediate plane portion of the chamfered portion 65 on the side is the inclined guide portion 66. Specifically, the chamfering depth D2 of the chamfered portion 65 on the front side is set substantially equal to the depth D3 of the troughs of the teeth 6, and the inclined guide portion 66 is more than the troughs of the respective teeth 6. It is located on the tooth tip 6b side. “Deep depth D3 of tooth 6” is a concept indicating the shortest distance from the surface connecting the peaks of adjacent teeth 6 to the valley of teeth 6.

  Next, the second tooth 7 will be described.

  As shown in FIGS. 1 to 3, FIGS. 5 to 11, FIGS. 13 to 15, and FIGS. 18 to 22, the second tooth 7 includes a plurality of ridge-side curved surface portions 71 that form a ridge of the teeth 7. The plurality of valley-side curved surface portions 73 that form the valleys of the teeth 7, and the plurality of the above-described plurality of the valley-side curved surface portions 71 that are continuously formed between the end portions 711 of the mountain-side curved surface portions 71 and the end portions 731 of the valley-side curved surface portions 73. An inclined surface portion 72 is provided, and the crest-side curved surface portion 71, the valley-side curved surface portion 73, and the inclined surface portion 72 form a tooth surface 7c having a corrugated cross section. The second tooth 7 is made of a plate-like metal material that can be easily pressed with the width of the tooth surface 7c set to be less than 0.6 to 4.0 mm.

  As shown in FIGS. 6, 11 and 15, the second tooth 7 is set such that the absolute value of the inclination angle A <b> 2 with respect to the contact / separation direction of the tooth 7 of the inclined surface portion 72 is less than 38 °. Yes. The absolute value of the inclination angle A2 with respect to the contact / separation direction of the teeth 7 of the inclined surface portion 72 is preferably 25 ° or more and less than 38 °. When the absolute value of the inclination angle A2 is less than 25 °, the angle of the first teeth 6 becomes steep and the paper P1 is easily torn. On the other hand, when the absolute value of the inclination angle A2 exceeds 38 °, the anchor effect and the hydrogen bonding effect described above cannot be sufficiently exhibited. Therefore, in order to obtain a sufficient binding force, a large operating force is required, which is not within the practical range when manually operating. If the absolute value of the inclination angle A2 is within the above-described range, the sheet P1 can be efficiently stretched and compressed without breaking the paper P1.

  As shown in FIGS. 6, 11, and 15, the second tooth 7 has a half length L <b> 21 along the waveform of the mountain-side curved surface portion 71, and a length along the waveform of the inclined surface portion 72. It is more than L22. The second tooth 7 is preferably such that a half L21 of the ridge-side curved surface portion 71 along the waveform and a length L22 of the inclined surface portion 72 along the waveform are equal. Here, the “length L22 along the waveform of the mountain-side curved surface portion 71” is a concept indicating the length of the geodesic line from the apex of the mountain-side curved surface portion 71 to the boundary with the inclined surface portion 72. The “length L22 of the inclined surface portion 72 along the waveform” is a concept indicating the shortest distance between the boundary with the mountain-side curved surface portion 71 and the boundary with the valley-side curved surface portion 73. In the present embodiment, when the second tooth 7 meshes the mountain side tooth 7 and the valley side tooth 6, the half L 21 of the length along the waveform of the mountain side curved surface portion 71 and the inclined surface portion 72. The length L22 along the waveform and the half L23 of the length along the waveform of the mountain-side curved surface portion 61 facing the valley-side curved surface portion 73 are set to be approximately equal. If the half L21 of the length along the waveform of the ridge-side curved surface portion 71 is set to be equal to or longer than the length L22 along the waveform of the inclined surface portion 72, the paper material is stretched to cause deformation. It becomes easy. However, in order to prevent the paper P1 from being pulled excessively or to prevent a part of the paper P1 from being overloaded, the half L21 of the ridge-side curved surface portion 71 along the waveform is: It is preferable to make it equal to the length L22 of the inclined surface portion 72 along the waveform.

  The “elongation rate” in this specification is defined as follows. That is, when the crest-side teeth 7 and the trough-side teeth 6 are engaged with each other, half the length L21 along the waveform of the crest-side curved surface portion 71, and length L22 along the waveform of the inclined surface portion 72, The sum of the length dimension L23 along the waveform of the mountain side curved surface portion 61 facing the valley side curved surface portion 73 is Y, and the center point of the mountain side curved surface portion 71 and the valley side curved surface portion 73 are defined as Y. When the length dimension L24 obtained by projecting the line connecting the center point of the mountain-side curved surface portion 61 facing to the virtual reference plane 11 is Z, the expansion ratio is expressed as Y / Z.

As shown in FIGS. 6, 11, and 13 to 15, the second tooth 7 includes a tooth surface 7 c having a corrugated cross section as described above. An inclined guide portion 76 for guiding the paper P1 to the paper insertion gap 12 is provided at the front edge of the tooth tip 7b. More specifically, the second tooth 7 is made by stamping a metal material (not shown) by pressing, and chamfered portions 74 and 75 are formed on both sides of the metal material in the tooth tip 7b in the thickness direction. Yes. These chamfered portions 74 and 75 are formed by cutting or plastically deforming with a press die.

  As shown in FIGS. 13 and 14, the second tooth 7 is configured such that one chamfered portion 74 is set larger than the other chamfered portion 75. In this embodiment, the chamfering depth D5 of the chamfered portion 75 located on the front surface side of the tooth 7 is set to be shallower than the chamfered depth D4 of the chamfered portion 74 located on the back surface side of the tooth 7. An intermediate plane portion of the side chamfered portion 75 serves as the inclined guide portion 76. Specifically, the chamfering depth D5 of the chamfered portion 75 on the front side is set to be substantially equal to the depth D6 of the troughs of the teeth 6 and 7, and the inclined guide portion 76 It is located on the tooth tip 7b side. “Deep depth D6 of tooth 7” is a concept indicating the shortest distance from the surface connecting the peaks of teeth 7 adjacent to each other to the valley of teeth 7.

  Thus, as shown in FIG. 15, the first teeth 6 and the second teeth 7 are the distances between the inclined surface portions 62 and 72 of the pair of teeth 6 and 7, that is, the inclined surface portions 62 and 72 are connected to each other. The length of the normal line corresponding to the shortest distance L3 is close to 0.09 mm, the length of the portion where the inclined surface portions 62 and 72 face each other, that is, the main portion by the two inclined surface portions 62 and 72. The length L4 in the direction perpendicular to the normal line of the pressure contact region is set to be less than 0.18 mm. Specifically, the two inclined surface portions in a state where the normal L corresponding to the shortest distance between the inclined surface portions 62 and 72 of the pair of teeth 6 and 7 is close to 0.09 mm. The length L4 in the direction perpendicular to the normal line of the main pressure contact region 62, 72 is preferably more than 0 mm and less than 0.18 mm. If the length L4 of the portion where the inclined surface portions 62 and 72 face each other is 0.18 mm or more, the force is dispersed over a wide area to be compressed, so that it is difficult to increase the holding force. That is, if the length L4 in the direction perpendicular to the normal line of the main pressure contact region by the inclined surface portions 62 and 72 is greater than 0 mm and less than 0.18 mm, the compression area is appropriate. It is possible to concentrate the force efficiently only on the portion where the fibers of the adjacent paper P1 are entangled with each other. Therefore, a strong binding force can be obtained with a force within a practical range.

  Hereinafter, preferred examples 1, 2, 3 and comparative examples of the first tooth 6 and the second tooth 7 will be described with reference to FIG.

<Example 1>
-Width L7 of the press part P2: 4 mm
-Length dimension L8 of the press part P2: 10 mm
Number of ridges: 10 ridges Absolute value of the inclination angles A1 and A2 with respect to the contact / separation direction of the teeth 6 and 7 of the inclined surface portions 62 and 72: 27 °
・ Half lengths L11 and L21 of the ridge side curved surface portions 61 and 71 along the waveform are 0.24 mm.
-Lengths L12 and L22 along the waveform of the inclined surfaces 62 and 72: 0.24 mm
-Half lengths L13 and L23 of the other teeth 7 and 6 facing the trough-side curved surface portions 63 and 73 of the other teeth 7 and 6 along the corrugated surface 71 and 61 are 0.24 mm.
・ Elongation rate: 1.44
The length L3 of the normal corresponding to the shortest distance between the inclined surfaces of the teeth 6 and 7 that make a pair is 0.09 mm (a value that assumes the thickness of the two sheets P1 after compression). In a close state (hereinafter referred to as “assumed approach state”), the length in the direction perpendicular to the normal line of the main pressure contact region by the inclined surface portions 62 and 72 (the inclined surface portions 62 and 72 face each other). Part length) L4: 0.06mm
<Example 2>
-Width L7 of the press part P2: 4 mm
-Length dimension L8 of the press part P2: 10 mm
Number of ridges: 10 ridges Absolute value of the inclination angles A1 and A2 with respect to the contact / separation direction of the teeth 6 and 7 of the inclined surface portions 62 and 72: 25 °
・ Half lengths L11 and L21 of the hillside curved surface portions 61 and 71 along the waveform are 0.245 mm.
-Lengths L12 and L22 along the waveform of the inclined surfaces 62 and 72: 0.22 mm
-Half lengths L13 and L23 of the other teeth 7 and 6 facing the trough-side curved surfaces 63 and 73 of the other teeth 7 and 6 along the corrugated surfaces 71 and 61: 0.245 mm
・ Elongation rate: 1.461
In the assumed approach state, the length L4 in the direction perpendicular to the normal line of the main pressure contact region formed by the two inclined surface portions 62 and 72 is 0.02 mm.
<Example 3>
-Width L7 of the press part P2: 4 mm
-Length dimension L8 of the press part P2: 10 mm
Number of ridges: 10 ridges Absolute value of the inclination angles A1 and A2 with respect to the contact / separation direction of the teeth 6 and 7 of the inclined surface portions 62 and 72: 32.5 °
・ Half lengths L11 and L21 of the ridge side curved surface portions 61 and 71 along the waveform are 0.22 mm.
-Lengths L12 and L22 along the waveform of the inclined surfaces 62 and 72: 0.12 mm
-Half lengths L13 and L23 of the other teeth 7 and 6 facing the trough-side curved surfaces 63 and 73 of the other teeth 7 and 6 along the corrugated surface 71 and 61 are 0.22 mm.
・ Elongation rate: 1.36
In the assumed approach state, the length L4 in the direction perpendicular to the normal line of the main pressure contact area formed by the both inclined surfaces 62 and 72 is 0.1 mm.
<Comparative example>
-Width L7 of the press part P2: 4 mm
-Length dimension L8 of the press part P2: 10 mm
Number of ridges: 10 ridges Absolute value of the inclination angles A1 and A2 with respect to the contact and separation directions of the teeth 6 and 7 of the inclined surface portions 62 and 72: 38 °
・ Half lengths L11 and L21 of the ridge side curved surface portions 61 and 71 along the waveform are 0.18 mm.
-Lengths L12 and L22 along the waveform of the inclined surfaces 62 and 72: 0.15 mm
・ Half lengths L13 and L23 of the other teeth 7 and 6 facing the trough-side curved surface portions 63 and 73 of the one tooth 6 and 7 along the corrugated surfaces 71 and 61: 0.18 mm
Elongation rate: 1.32
In the assumed approach state, the length L4 in the direction perpendicular to the normal line of the main pressure contact region by the two inclined surface portions 62 and 72 is 0.19 mm.
Next, the tooth holders 8 and 9 will be described.

  The first tooth holder 8 and the second tooth holder 9 are in sliding contact with each other, as shown in FIGS. 1, 2, 6 to 10, and 18 to 22, respectively. , 9 are provided with positioning surfaces 86 and 96 for positioning in the direction of the shaft 4 axis 4a.

  As shown in FIGS. 1, 2, 6 to 10, and 18 to 22, the first tooth holder 8 is integrally formed of synthetic resin, and a holder body 81 that holds the teeth 6. And a bearing portion 82 that rotatably supports the holder body 81 on the shaft 4. The first tooth holder 8 includes a single bearing portion 82 having positioning surfaces 86 on both sides. The first tooth holder 8 is held by the first receiving base 2. That is, the first tooth holder 8 is fixed to the upper surface of the plate member 23 of the first receiving base 2 using screws 85. The first tooth holder 8 receives the paper P1 inserted in the paper insertion gap 12 formed between the upper surface side of the first tooth holder 8 and the lower surface side of the second tooth holder 9. A locking wall 83 is provided at the part in contact, that is, at the back of the gap. The first tooth holder 8 has a plan view of the locking wall 83 for positioning the paper P1 by bringing the corner P12 of the paper P1 into contact with the central portion of the locking wall 83. It has a positioning portion 84 formed by cutting out a right isosceles triangle.

  As shown in FIGS. 1, 2, 6 to 10 and FIGS. 18 to 22, the second tooth holder 9 is integrally formed of synthetic resin, and a holder body 91 that holds the teeth 7. And a bearing portion 92 that rotatably supports the holder body 91 on the shaft 4. The second tooth holder 9 includes a pair of bearing portions 92 each having a positioning surface 96 on the opposite surface, and the second tooth holder 9 is provided on both sides of the bearing portion 92 of the first tooth holder 8. A pair of bearing portions 92 are arranged, and the positioning surfaces 96 of the respective bearing portions 92 are in sliding contact with each other. The second tooth holder 9 is not held by the second receiving base 3. That is, a gap 13 that gradually expands forward is formed between the upper surface of the second tooth holder 9 and the lower surface of the plate member 33 of the second receiving base 3.

  Next, the operation of the binding tool 1 will be described with reference to FIGS.

  First, as shown in FIG. 18, in the standby position (F), the first receiving base is acted on by the action of a return spring (not shown) provided between the first receiving base 2 and the second receiving base 3. 2 and the base end portions 2b and 3b of the second receiving base 3 are in the closest state. As a result, the pressing member 53 is in contact with the upper surface of the elastic repulsion member 52 in a state in which the operation handle 51 jumps upward. In this state, the tooth tips 6b and 7b of the first tooth 6 and the second tooth 7 are held apart from each other.

  In the standby position (F) as described above, the plurality of stacked sheets P1 are inserted into the sheet insertion gap 12 formed between the first teeth 6 and the second teeth 7, and the locking is performed. Positioning is performed at a position in contact with the wall 83.

  Thereafter, when the operation handle 51 is rotated downward, the sub shaft 10 is moved upward with the pressing member 53 as a fulcrum until the second teeth 7 come into contact with the paper P1, and the sub shaft 10 is moved upward. The second receiving base 3 rotates as shown in FIG. As a result, the paper P <b> 1 is sandwiched between the first teeth 6 and the second teeth 7.

  When further operating force is applied from this state, as shown in FIGS. 20 and 21, the pressing member 53 presses downward while moving the upper surface of the elastic repulsion member 52 backward, and the second teeth 7. Is strongly urged in the direction of the first teeth 6 and the paper P1 is pinched. From the stage in which the paper P1 is compressed to the limit, and in the stage in which the operation handle 51 is further rotated to the final position (L) as shown in FIG. 22, the pressing member 53 exclusively elastically repels the elastic repulsion member 52. It moves downward while deforming. Therefore, the operation handle 51 is allowed to rotate while gradually increasing the clamping force of the teeth 6 and 7 with respect to the paper P1.

  The sheet P1 that has received such a clamping pressure is compressed and deformed into a cross-sectional waveform while the sheet material is expanded. At that time, in the region where the inclined surface portion 62 of the first tooth 6 and the inclined surface portion 72 of the second tooth 7 face each other, the strongest compressive force is applied to the paper P1, mainly in this portion. The anchor effect and the hydrogen bonding effect described above are exhibited, and a plurality of sheets P1 are bound to each other.

  Next, the results of the above-described Examples 1, 2, and 3 and the comparative example in which the paper P1 is bound using the teeth 6 and 7 of the binding tool 1 will be described with reference to FIG.

  In FIG. 24, “holding force” is a constant value at one end in the longitudinal direction of recycled paper copy paper P1 corresponding to the A4 size, for example, when the clamping force by the both teeth 6 and 7 using the binding tool 1 is around 150 kg. This is an index indicating the ease of peeling when the other end side of the copy paper P1 is turned up. Here, when the holding force is “impossible”, it means that the press part P2 is easily peeled off when it is turned up and is not practically used. A holding force of “possible” means a state where the press part P2 is not easily peeled off when turned up. When the holding power is “good”, it means that the press portion P2 is firmly bound when turned up and can be sufficiently put into practical use. The results are shown below. Note that since the holding force varies depending on the quality of the sheets to be bound, the temperature and humidity of the space where the sheets are bound, specific numerical values of the holding forces are not shown.

  In Example 1, when the 2 sheets and 4 sheets were bound, the result that the holding force was “good” was obtained. In Example 2, the holding force when binding two sheets was “good”, and the holding force when binding four sheets was “possible”. In Example 3, the retention strength was slightly inferior in the case of 4 sheets, but the retention strength was “good” in the case of 2 sheets.

  From the above results, practical holding force is obtained for Examples 1, 2, and 3, but for the comparative example, the holding force is weak in both cases when binding 2 sheets and 4 sheets, It turns out that it cannot be put to practical use.

  From these experimental results, when the absolute values of the inclination angles A1 and A2 are increased, the anchor effect is difficult to obtain, and the force is not concentrated on the inclined surface portions 62 and 72, so that the hydrogen bonding effect is hardly exhibited. It is considered difficult to obtain a practical holding force. Further, when the length of the portion where the inclined surface portions 62 and 72 face each other, that is, the length L4 in the direction perpendicular to the normal line of the main pressure contact region by both the inclined surface portions 62 and 72, the compression area increases. Therefore, since the force is not concentrated on the inclined surface portions 62 and 72, the hydrogen bonding effect is hardly exhibited, and it is considered difficult to obtain a practical holding force. Further, when the elongation rate of the paper material is reduced, it is difficult to expose a large amount of the paper material for performing the hydrogen bonding, and the hydrogen bonding effect is hardly exhibited, and a practical holding force is obtained. It seems difficult.

  Thus, the absolute values of the inclination angles A1 and A2 described above, the length L4 in the direction perpendicular to the normal line of the main pressure contact area formed by the inclined surface portions 62 and 72, and the elongation rate of the paper material are: Although they can independently affect the anchor effect and / or the hydrogen bonding effect, it is considered that they are not linked to each other.

  In the embodiment described above, if the recycled paper copy paper P1 is replaced with a normal copy paper, it can be expected that a holding force larger than the holding force described above can be obtained.

Next, reference examples 1, 2, 3, 4, and 5 relating to the length dimension L8 of the press portion P2 described above will be described with reference to FIG. In these reference examples 1, 2, 3, 4, and 5, the shape of the teeth for one pitch (one crest) is the same as that of the first embodiment described above, and the length dimension L8 is changed by changing the number of crests. These are set to 5 mm, 8 mm, 10 mm, 15 mm, and 20 mm.

  FIG. 25 shows the result of the same experiment as the retention force experiment performed on Examples 1 to 3 and the comparative example using the teeth of Reference Examples 1 to 5, and “impossibility of retention force” is shown. ”,“ OK ”, and“ Good ”are the same as described above.

  For Reference Example 2, both holding forces when binding 2 sheets and 4 sheets are “possible”, and for Reference Example 3 and Reference Example 4, both holding forces when binding 2 sheets and 4 sheets are “good”. I got the result. On the other hand, in Reference Example 1 and Reference Example 5, any holding force when binding two sheets and four sheets was “impossible”.

  From such experimental results, it can be said that the length dimension L8 of the press part P2 (and the longitudinal dimension of the teeth 6 and 7 corresponding thereto) is preferably 8 mm to 15 mm. That is, when the length L8 of the press portion P2 is smaller than 8 mm, the total area of the inclined surfaces 62 and 72 facing each other in the teeth 6 and 7 as a whole is small, and the paper viewed from the press portion P2 as a whole. Since there are too few places where P1 is compressed, the hydrogen bonding effect cannot be exhibited sufficiently. On the other hand, when the length L8 of the press part P2 is 20 mm or more, the load per unit area is reduced by increasing the total area of the inclined surfaces 62 and 72 facing each other in the teeth 6 and 7 as a whole. End up. This is considered to be due to the fact that the force applied to the teeth 6 and 7 is not concentrated and the hydrogen bonding effect is hardly exhibited.

  In this experiment, the holding force of Reference Example 1 and Reference Example 5 resulted in an unfavorable result, but a holding force that can be put to practical use may be obtained by slightly increasing the clamping force of the teeth 6 and 7. is there.

  Hereinafter, effects of the binding tool 1 according to the present embodiment will be described.

  The binding tool 1 of this embodiment is provided with inclined surface portions 62 and 72 that form predetermined inclination angles A1 and A2 with respect to the contact and separation directions on the pair of teeth 6 and 7 that contact and separate in a certain direction, respectively. By pressing a part of the sheet P1 arranged by laminating a plurality of sheets between the teeth 6 and 7 at the inclined surface portions 62 and 72 of the paired teeth 6 and 7, with the expansion of the sheet material, these are pressed. The sheet P1 can be bound, and the absolute values of the inclination angles A1 and A2 with respect to the contact and separation directions of the teeth 6 and 7 of the inclined surface portions 62 and 72 are less than 38 °, and the teeth forming the pair 6 and 7 in the main pressure contact region formed by the two inclined surface portions 62 and 72 in a state in which the normal length L3 corresponding to the shortest distance between the inclined surface portions 62 and 72 is 0.09 mm. The length L4 in the direction perpendicular to the line is below 0.18 mm Ri, elongation of the sheet material is greater than 1.32 to 1.60.

  That is, since the length L4 of the portion where the inclined surfaces 62 and 72 face each other when the facing distance between the inclined surfaces 62 and 72 becomes 0.09 is set to be less than 0.18 mm, the elongation rate The sheet P1 can be bound with a relatively small operating force while maintaining the state of exceeding 1.32 and not exceeding 1.60, and a practical holding force can be maintained in the bound state.

In addition, each of the teeth 6 and 7 includes a plurality of crest-side curved surface portions 61 and 71 forming crests of the teeth 6 and 7, a plurality of trough-side curved surface portions 63 and 73 forming troughs of the teeth 6 and 7, and A plurality of the inclined surface portions 62 and 72 formed continuously between the end portions 611 and 711 of the mountain-side curved surface portions 61 and 71 and the end portions 631 and 731 of the valley-side curved surface portions 63 and 73, respectively. The tooth surface 6c, 7c is relatively simple because the mountain side curved surface portions 61, 71, the valley side curved surface portions 63, 73 and the inclined surface portions 62, 72 form the tooth surfaces 6c, 7c having a corrugated cross section. Can be formed. Further, since the press part P2 formed by these teeth 6 and 7 has directionality, it can resist turning of the paper P1 in a direction orthogonal to the longitudinal direction of the press part P2 with a relatively strong force. it can.

  In particular, in the present embodiment, the absolute values of the inclination angles A1 and A2 with respect to the contact and separation direction of the teeth 6 and 7 of the inclined surface portions 62 and 72 are 25 ° or more and less than 38 °. When A1 and A2 are too small, that is, the inclination of the teeth 6 and 7 is too steep, the portion pressed by the inclined surface parts 62 and 72 of the press part P2, that is, the inclined compression part P22 can be prevented from being broken. In other words, if the angle is made steep, the teeth 6 and 7 bite into the paper P1 deeper, so that the problem that the paper P1 cannot withstand the force received from the teeth 6 and 7 is broken. At the same time, the inclination angles A1 and A2 of the teeth 6 and 7 are too large, that is, when the inclination of the teeth 6 and 7 is too gentle, the area where the paper P1 is compressed becomes large and the force is dispersed. Can be suppressed. Therefore, the anchor effect and the hydrogen bonding effect can be effectively exhibited.

  In addition, the two inclined surface portions 62, 72 are brought close to each other so that a normal length L3 corresponding to the shortest distance between the inclined surface portions 62, 72 of the paired teeth 6, 7 is 0.09 mm. Since the length L4 in the direction perpendicular to the normal line of the main pressure contact area is more than 0 mm and less than 0.18 mm, the force can be concentrated on a relatively small area, and the hydrogen bonding effect can be sufficiently exhibited. be able to.

  Furthermore, in this embodiment, since the expansion rate of the paper material is 1.36 or more and 1.47 or less, the expansion rate is too small while suppressing the paper P1 from being torn due to the expansion rate being too large. Accordingly, the problem that it is difficult to sufficiently exert the hydrogen bonding effect without increasing the surface area of the paper material to be compressed can be solved.

  Moreover, since the half L11 and L21 of the length along the waveform of the mountain side curved surface portions 61 and 71 are longer than the length L12 and L22 along the waveform of the inclined surface portions 62 and 72, the mountain side curved surface portion 61 is obtained. , 71 can cause the sheet P1 to be deformed to a greater extent by compression than when the half lengths L11, L21 along the waveform of 71, are smaller than the lengths L12, L22 along the waveform of the inclined surface portions 62, 72. it can.

  In particular, the teeth 6 and 7 of the present embodiment are half lengths L11 and L21 along the corrugations of the mountain side curved surface portions 61 and 71 and lengths L12 and L22 along the corrugations of the inclined surface portions 62 and 72, respectively. Therefore, it is possible to prevent the paper P1 from being pulled excessively and a part of the paper P1 from being loaded.

  Further, in the binding tool 1 of the present embodiment, a plurality of stacked sheets P1 are arranged between a pair of teeth 6 and 7 that contact and separate in a certain direction, and the sheet P1 is sandwiched between the teeth 6 and 7. The sheet P1 can be bound by pressing, and the first receiving base 2 for urging the first teeth 6 in the clamping direction and the second teeth 7 in the clamping direction. The second receiving base 3 for biasing, and the biasing force for applying a clamping pressure to the teeth 6 and 7 by expanding the predetermined portions of the first and second receiving bases 2 and 3 to each other. The mechanism 5 includes an operation handle 51 provided on the second receiving base 3, an elastic repelling member 52 provided on the first receiving base 2, and the elastic repelling member 52. Is provided on the operation handle 51 so that the outer peripheral surface 531 is in contact with the outer peripheral surface 531. Those having a shaft-shaped pressing member 53 for pressing the first predetermined portion of the receiver base 2 in a direction away from the predetermined portion of the second receiver base 3 through sexual repulsion member 52. The structure of the binding tool is not limited to the combination with other components of the present embodiment, and can constitute a separate independent invention.

  That is, the conventional one has a problem that the operation force applied to the operation handle becomes excessive in order to compress the sheet so as to exhibit a holding force of a certain level or more. In other words, when the operation handle is operated within the range of practical operation force, there is a problem that the holding force between the sheets is not practical. Such a problem is not limited to the manual operation of the operation handle, and an actuator having a large capacity is required even when the operation handle is operated electrically. However, in the case of the present embodiment, it is possible to provide the binding tool 1 that can secure the holding force of the bound paper P1 above a certain level while keeping the energy required for the operation low. That is, since the pressing member 53 has a shaft shape, the outer peripheral surface 531 can be smoothly moved on the elastic repulsion member 52. The shaft-like pressing member 53 is not limited to the non-rotatable attachment to the operation handle 51 as in the present embodiment, but may be attached to the operation handle 51 to be rotatable. .

  More specifically, the binding tool 1 includes a plurality of stacked sheets P1 disposed between a pair of teeth 6 and 7 that contact and separate in a certain direction, and the sheets P1 are disposed by the teeth 6 and 7. The sheet P1 can be bound by being pinched and includes a first receiving base 2 for urging the first teeth 6 in the pinching direction at the tip, and a second at the tip. A second receiving base 3 for urging the teeth 7 in the clamping direction, a main shaft 4 that pivotally attaches both the receiving bases 2 and 3 at the tip vicinity portions 2a and 3a, and the first and second And an urging mechanism 5 for applying a clamping force to the teeth 6 and 7 by pushing the base end portions 2b and 3b of the receiving base 3 to each other. The urging mechanism 5 is a second receiving member. An operation handle 51 provided on the base 3, an elastic repulsion member 52 provided on the first receiving base 2, and an outer side of the elastic repulsion member 52. A base end portion 2b of the first receiving base 2 is provided to the second receiving base 3 via the elastic repulsion member 52 provided on the operating handle 51 so that the surface 531 comes into contact therewith. And a shaft-shaped pressing member 53 that presses in a direction away from the base end portion 3b. Therefore, the outer peripheral surface 531 of the pressing member 53 can be smoothly moved on the elastic repulsion member 52, and the energy required for the operation can be kept low. The structure of the binding tool is not limited to the combination with other components of the present embodiment, and can constitute a separate independent invention.

  Further, the urging mechanism 5 pivotally attaches the operation handle 51 to the base end portion 3b of the second receiving base 3 via the sub shaft 10, and the operation handle 51 is located at a position eccentric from the sub shaft 10. The pressing member 53 is fixed, and the pressing member 53 is pressed against the elastic repulsion member 52 by rotating the operation handle 51 toward the distal ends 2c and 3c of the first and second receiving bases 2 and 3. However, the operation handle 51 and the receiving bases 2 and 3 are unbalanced in size so that a practical number of sheets P1 can be bound. Therefore, the problem that the balance of the binding tool 1 as a whole becomes worse or the binding tool 1 as a whole increases in size can be solved.

  Further, in a state where the urging mechanism 5 operates the operation handle 51 to the final position (L), the first receiving base 2 side from the virtual reference surface 11 on which the sheet to be bound by the pressing member 53 is arranged. And the sub-shaft 10 is set to be located closer to the second receiving base 3 than the virtual reference plane 11. That is, since the pressing member 53 and the sub shaft 10 can be arranged across the virtual reference plane 11, the binding tool 1 as a whole can be made compact. Here, the virtual reference surface 11 may be any surface as long as the sheet P1 to be bound is disposed, and the tooth tips of the teeth and the axis of the main shaft are not disposed on this surface. It may be a thing.

More specifically, in the binding tool 1 of the present embodiment, the tooth tip 6b of the first tooth 6 and the axis 4a of the main shaft 4 are disposed along the virtual reference plane 11 on which the paper P1 to be bound is disposed. The pressing member 53 is positioned closer to the first receiving base 2 than the virtual reference plane 11 in a state where the urging mechanism 5 has operated the operation handle 51 to the final position (L). Since the sub-shaft 10 is set so as to be positioned closer to the second receiving base 3 than the virtual reference plane 11, the entire binding tool 1 can be made compact.

  Projection distance L5 with respect to the virtual reference plane 11 from the tooth tips 6b, 7b of the teeth 6, 7 to the axis 4a of the main shaft 4, and the axis 10a of the sub shaft 10 from the axis 4a of the main shaft 4 Since the ratio of the projection distance L6 to the virtual reference plane 11 is 1: 1 to 1: 6.2, the entire binding tool 1 can be kept in an appropriate balance. That is, in the binding tool 1 of the present embodiment, when X exceeds 6.2, it is impossible to insert five sheets of paper P1 between the upper and lower teeth 6 and 7 even if the handle is pulled up to the limit. However, the distance between the main shaft 4 and the sub shaft 10, the angle formed by the shafts 4, 10, the thickness dimension of the elastic repulsion member 52, and the like are not limited thereto. On the other hand, when X is less than 1, there is no physical space for arranging the parts. Note that the binding tool 1 of the present embodiment has X set to about 4.5, and if X is smaller than this, the receiving bases 2, 3 and other parts become too large with respect to the operation handle 51. If X is larger than this, the operation handle 51 becomes too large with respect to the receiving bases 2 and 3. Therefore, if X is set to about 4.5 as in this embodiment, the usability can be improved as the binding tool 1 operated manually, and the size balance of the binding tool 1 as a whole can be optimized. Can do.

  The operation handle 51 has a U-shaped cross section having side walls 512 on both sides, and is externally fitted to the second receiving base 3 in a state where the operation handle 51 is operated to the final position (L). Since it is comprised, it can be made compact in the state which operated the operation handle 51 to the last position (L).

  The second receiving base 3 has a U-shaped cross section having side walls 36 on both sides, and the side wall 36 is provided on the operation handle 51 in a state where the operation handle 51 is not operated. Since the notched portion 361 into which the pressing member 53 enters is provided, the sub shaft 10, the pressing member 53, and the main shaft 4 can be disposed close to the virtual reference plane 11. Therefore, the binding tool 1 as a whole can be made compact.

  Furthermore, the teeth 6 and 7 of the binding tool 1 of the present embodiment are arranged with a plurality of stacked sheets P1 between the teeth 6 and 7 that make a pair approaching and separating in a certain direction. The tooth surface 6c, 7c is used in the binding tool 1 capable of pinching the paper P1 and binding the paper P1, and the teeth 6b, 7b have ridges and valleys in cross section. And inclined guide portions 66 and 76 for guiding the paper P1 to the paper insertion gap 12 at the front edge of the tooth tips 6b and 7b. The inclined guide portions 66 and 76 are tooth tips than the valleys. Located on the 6b, 7b side. The tooth structure is not limited to a combination with other components of the present embodiment, and can constitute a separate independent invention.

That is, the conventional one is provided with chamfered portions on both sides in the thickness direction of the metal material at the tip of each tooth, and the chamfering depth of each chamfered portion is set larger than the depth of the valley of each tooth. It was. In such a case, when burr is generated at the end of the trough portion by polishing the trough after forming the chamfered portion, the trough portion having a curved shape may be exposed to the chamfered portion. obtain. In this state, when a sheet is to be inserted into a sheet insertion gap formed between the pair of teeth, the surface on the side where the sheet is inserted, that is, the valley portion exposed on the chamfered portion located on the front side. In addition, there is a problem that the edge of the paper is caught. However, in the case of the binding tool 1 as in the present embodiment, the paper P1 can be prevented from being caught on the teeth 6 and 7 as much as possible when the paper P1 is inserted. The teeth 6 and 7 having such inclined guide portions 66 and 76 may be formed by cutting or may be formed by pressing. As a specific example of cutting, manual work or machining can be considered.

  Further, since the inclined guide portions 66 and 76 are set on the tooth tips 6b and 7b side of the valley, the inclination of the chamfered portions 65 and 75 on the paper insertion side is so gentle that the paper P1 is not torn. It is possible to suppress breakage of the boundary portion P24 between the longitudinal end portion on the opposite end side of the paper P1 and the unpressed portion in the press portion P2 after the paper P1 is compressed. More specifically, the boundary portion P24 formed by the front side of the binding tool 1 (front edge portions of the tooth tips 6b and 7b) is located on the main body side of the bound booklet P. When the press part P2 is set at the end of the paper P1, the user often turns from the main body side of the booklet P when turning the paper P1. Therefore, compared to the boundary portion P25 between the longitudinal end portion on the edge P11 side of the paper P1 and the unpressed portion, a force in the direction of separating the paper P1 is applied to the boundary portion P24 on the main body side. There are many. Therefore, it is preferable to prevent the boundary portion P24 from being broken as much as possible.

  The teeth 6 and 7 are made by stamping a metal material 60, and chamfered portions 64, 65, 74, and 75 are provided on both sides of the tooth material 6b and 7b in the thickness direction of the metal material 60. Since the one chamfered portion 65, 75 is part of the inclined guide portions 66, 76 provided by pressing, each tooth 6, 7 can be easily formed by pressing. The inclined guide portions 66 and 76 can also be easily formed by press working. That is, the teeth 6 and 7 can be formed with relatively low cost by performing the flow operation in the progressive feeding only by press working.

  In particular, since one of the chamfered portions 64 and 74 is set to be larger than the other chamfered portions 65 and 75, the size of the tooth surfaces 6c and 7c for compressing the paper P1 is secured, and the size of the paper P1 Breaking can be suppressed.

  Further, in the present embodiment, each of the teeth 6 and 7 includes a plurality of sheets P1 stacked between a pair of teeth 6 and 7 that contact and separate in a certain direction. Is used for the binding tool 1 capable of binding these sheets P1 by pressing, and is made by stamping the metal material 60 with a press, and the metal material 60 at the tooth tips 6b and 7b. Chamfered portions 64, 65, 74, 75 are provided on both sides in the thickness direction by pressing. The tooth structure is not limited to a combination with other components of the present embodiment, and can constitute a separate independent invention.

  In other words, in the conventional one, each tooth is made by subjecting a metal material to a relatively troublesome polishing process, and a large number of teeth formed by cutting such as manual work or machining. It was not suitable for production. However, if it is like this embodiment, a punching process and a chamfering process will be possible only by a press, and the teeth 6 and 7 for the binding tool 1 can be formed relatively easily while suppressing the production cost. The tooth surfaces 6c and 7c of the teeth 6 and 7 are not limited to corrugated shapes and can be changed variously. Furthermore, the valleys of the teeth 6 and 7 are of the same height as the lower end of the chamfered portion. It may be located on the tooth tip side with respect to the lower end portion of the chamfered portion, or may be located on the proximal side of the tooth with respect to the lower end portion of the chamfered portion. Further, the size of one chamfered portion and the size of the other chamfered portion may be different from each other. A specific example is a tooth formed only by pressing, in which one chamfered portion and the other chamfered portion are set to different sizes, and a trough of teeth is formed on both chamfered portions. What is located in the tooth | gear tip side rather than the lower end part of a lower end part and an inclination guide part is mentioned.

Further, in the present embodiment, each of the teeth 6 and 7 includes a plurality of sheets P1 stacked between a pair of teeth 6 and 7 that contact and separate in a certain direction. These papers P1
Teeth 6, 7 used in the binding tool 1, which are provided with chamfered portions 64, 65, 74, 75 on both front and rear edges in the paper insertion direction, of the chamfered portions 65, 75 on the paper insertion side. The inclination is set to be gentler than the inclination of the chamfered portions 64 and 74 on the opposite side. Here, “inclination” means an angle with respect to a virtual reference plane on which a sheet to be bound is arranged. The tooth structure is not limited to a combination with other components of the present embodiment, and can constitute a separate independent invention.

  In the case of the present embodiment, since the slopes of the chamfered portions 65 and 75 on the paper insertion side are set gently, the opposite side of the paper P1 in the press portion P2 after the paper P1 is compressed. Breaking of the boundary portion P24 between the longitudinal end portion and the unpressed portion can be suppressed. Although it is conceivable to make the slopes of the chamfered portions on both sides gentle so as to reduce the tearing of the paper as much as possible, it is difficult to secure the area of the portion where the paper is compressed. However, in the case of the present embodiment, since only the slopes of the chamfered portions 65 and 75 on the paper insertion side corresponding to the boundary portion P24 that particularly requires strength are made gentle, the teeth 6 and 7 are compressed as a whole. While securing the area of the portion, tearing of the paper P1 can also be suppressed. Furthermore, if it is such, the effect that the paper P1 can be easily inserted in the paper insertion gap 12 is also obtained.

  In addition, the teeth in which the inclination of the chamfered portion on the paper insertion side is set more gently than the inclined surface of the opposite chamfered portion may be formed by cutting the chamfered portion, It may be formed by press working. As a specific example of cutting, manual work or machining can be considered.

  In addition, the lower end of the chamfered portion is located closer to the tip of the tooth than the trough of the tooth, is located at the same height as the trough of the tooth, is located proximal to the trough of the tooth Anything may be used.

  In the present embodiment, as a desirable mode, the chamfered portions 65 and 75 on the paper insertion side are configured to have a gentle slope. However, the chamfered portions 65 and 75 are not inclined gently. You can also.

  Further, in the binding tool 1 of the present embodiment, a plurality of sheets of paper P1 are arranged between a pair of teeth 6 and 7 that contact and separate in a certain direction, and the paper P1 is sandwiched between the teeth 6 and 7. The sheet P1 can be bound by pressing, and the first receiving base 2 for urging the first teeth 6 in the clamping direction and the second teeth 7 in the clamping direction. A second receiving base 3 for urging, a first tooth holder 8 holding the first teeth 6, a second tooth holder 9 holding the second teeth 7, and the first and second And positioning means for positioning the two tooth holders 8 and 9 so as to perform a certain relative movement. The structure of the binding tool is not limited to the combination with other components of the present embodiment, and can constitute a separate independent invention. Here, the positioning means can be variously changed such that the first and second tooth holders are completely connected and the first and second tooth holders are fitted and positioned. In this embodiment, the positioning means is used to make the first and second tooth holders 8 and 9 independent of the operation handle 51 and the second receiving base 3 to which the operation handle 51 is attached.

  In the prior art, the first tooth holder for holding the first teeth is fixed to the first receiving base, and the second tooth holder for holding the second teeth is fixed to the second receiving base. The operation handle is pivotally attached to the second receiving base. Therefore, it is necessary to set the position of the tooth holder with respect to the receiving base very accurately so that the first tooth and the second tooth mesh at an appropriate position when the operation handle is rotated. In other words, there is a problem that the desired clamping pressure cannot be exerted if the position of the teeth is slightly shifted due to the error in the size of the parts or the shift of the mounting position of the tooth holder to the receiving base. there were. However, in the case of the present embodiment, the first and second receiving bases 2 and 3 and the tooth holders 8 and 9 are positioned separately, so regardless of the accuracy of the receiving bases 2 and 3. The accuracy between the teeth 6 and 7 can be improved. Therefore, it is possible to provide the binding tool 1 that can secure the holding force of the bound paper P1 above a certain level. Further, since the accuracy of the receiving bases 2 and 3 is not questioned, a sheet metal material as described above can be applied as the receiving bases 2 and 3. The positioning means only needs to support at least the first and second tooth holders 9, and is limited to the main shaft 4 pivotally attached to the first and second receiving bases 2 and 3. I can't. In the present embodiment, the first and second tooth holders 8 and 9 are set so as to be independent from the second receiving base 3. It may be independent of the receiving base 2 or may be independent of the receiving bases 2 and 3. Further, the fixed relative motion between the first and second tooth holders 8 and 9 is not limited to the rotation motion, and can be variously changed such as a linear motion.

  The first teeth 6 and the second teeth 7 have a shape extending in a certain direction, and the positioning means is a short direction for relative positioning of the teeth 6 and 7 in the short direction. Since the positioning element and the longitudinal positioning element for performing relative positioning in the longitudinal direction of the teeth 6 and 7 are provided, the positions of the teeth 6 and 7 with respect to the paper P1 should be appropriate. Can do.

  Since the short-direction positioning element is the common shaft 4 that supports the first and second tooth holders 8 and 9 in the contact and separation direction of the teeth 6 and 7, the rotation operation of the tooth holders 8 and 9 is performed. Can be regulated by the diameter of the shaft 4.

  Furthermore, since the short dimension direction positioning element is the main shaft 4 that pivotally connects the first receiving base 2 and the second receiving base 3, the tooth holders 8, 9 with respect to the receiving bases 2, 3 are arranged in the front-rear direction. Misalignment can be suppressed.

  The longitudinal positioning elements are provided on the first tooth holder 8 and the second tooth holder 9 and are in sliding contact with each other to position the teeth 6, 7 of the tooth holders 8, 9 in the longitudinal direction. Therefore, it is possible to prevent the positional deviation between the tooth holders 8 and 9 in the left-right direction.

  The tooth holders 8 and 9 have holder main bodies 81 and 91 for holding the teeth 6 and 7, and bearing parts 82 and 92 for rotatably supporting the holder main bodies 81 and 91 on the short dimension positioning element. Since it is provided, it is supported by the common shaft 4 which is a short direction positioning element that penetrates the bearing portions 82 and 92 while appropriately holding the teeth 6 and 7 by the holder main bodies 81 and 91. Thus, the positions of the teeth 6 and 7 can be made appropriate.

  In particular, in the present embodiment, the first tooth holder 8 includes a single bearing portion 82 having positioning surfaces 86 on both sides, and the second tooth holder 9 is positioned on the opposing surface. A pair of bearing portions 92 having a face 96 is provided, and bearing portions 92 that form a pair of second tooth holders 9 are arranged on both sides of the bearing portion 82 of the first tooth holder 8, Since the positioning surfaces 86 and 96 of the bearing portions 82 and 92 are in sliding contact with each other, positioning in the left-right direction can be performed with a simple structure, and assembly work is easy to perform.

In addition, since the first tooth holder 8 and the second tooth holder 9 are each integrally molded, the positional relationship between the bearing portions 82 and 92 and the tooth holders 8 and 9 can be determined firmly. The accuracy between the teeth 6 and 7 is easy to obtain. In particular, in the present embodiment, since the first tooth holder 8 and the second tooth holder 9 are each integrally formed of synthetic resin, the above accuracy is achieved despite the relatively complicated shape. Can be kept constant.

  Furthermore, since the first tooth holder 8 is held by the first receiving base 2 and the second tooth holder 9 is not held by the second receiving base 3, When an operation force is applied to the operation handle 51, an excessive force is not applied to the positioning surfaces 86 and 96.

  Further, in the binding tool 1 of the present embodiment, a plurality of stacked sheets P1 are arranged between a pair of teeth 6 and 7 that contact and separate in a certain direction, and the sheet P1 is sandwiched between the teeth 6 and 7. The sheet P1 can be bound by pressing, and the first receiving base 2 for urging the first teeth 6 in the clamping direction and the second teeth 7 in the clamping direction. A second receiving base 3 for biasing, a main shaft 4 that pivotally attaches both receiving bases 2 and 3 at the tip vicinity portions 2a and 3a, and base end portions of the first and second receiving bases 3 The urging mechanism 5 for applying a clamping pressure to the teeth 6 and 7 by pushing the 2b and 3b apart from each other, and the first tooth 6 supported directly on the main shaft 4 so as to be rotatable. A first tooth holder 8 and a second tooth holder that is directly supported rotatably on the main shaft 4 and holds the second teeth 7. It is those with a door. In this case, the first and second receiving bases 2 and 3 need only be pressed in the clamping direction, and the positioning of the teeth 6 and 7 is performed between the first and second tooth holders 8 and 9. Just do it.

  Further, the first receiving base 2 and the second receiving base 3 are respectively formed of base bodies 21 and 31 supported by the main shaft 4 and corresponding teeth 6 and 7 held by the base bodies 21 and 31. Since the hard tooth receiving members 22 and 32 that press the proximal ends 6a and 7a in the pinching direction are provided, the pinching force between the first and second teeth 6 and 7 causes the teeth 6 and 7 to A large force applied to the base ends 6a and 7a can be dispersed by the tooth receiving members 22 and 32 to prevent the receiving bases 2 and 3 from being deformed.

  Next, a second embodiment of the present invention will be described with reference to the drawings. In addition, the same name and code | symbol are attached | subjected to each site | part corresponding to the thing in 1st embodiment mentioned above.

  As shown in FIGS. 26 to 37, the binding tool X <b> 1 of the present embodiment includes a plurality of sheets stacked between a pair of teeth 6 and 7 that contact and separate in a certain direction, 7, the sheets can be clamped and bound, and the first receiving base 2 for urging the first teeth 6 in the clamping direction and the second teeth 7 The second receiving base 3 for urging the holding base 2 in the clamping direction, the main shaft 4 pivotally attaching the two receiving bases 2 and 3 at the tip vicinity portions 2a and 3a, and the first and second receiving bases An urging mechanism 5 for applying a clamping force to the teeth 6 and 7 by pushing the base end portions 2b and 3b of the two and 3 to each other, and a first tooth holder for holding the first teeth 6 8 and a second tooth holder 9 for holding the second teeth 7.

  As shown in FIGS. 26 to 29 and 33, the first receiving base 2 is for urging the first teeth 6 in the clamping direction at the tip vicinity portion 2a. The first receiving base 2 includes a base body 21 supported by the main shaft 4 and a plate member 23 attached to the upper surface of the base body 21.

  As shown in FIGS. 26, 28, 29 and 33, the base body 21 extends upward from a bottom plate 24, a pair of side walls 26 erected from both side edges of the bottom plate 24, and a front end of the bottom plate 24. It has a front wall 25 extended toward the front, and is made of a sheet metal integrally formed by punching and bending a sheet metal material. Further, the rear portion of the base body 21 includes a bottom plate 28a, a pair of side walls 28b erected from both side edges of the bottom plate 28a, and a rear wall 28c extending upward from the rear end of the bottom plate 28a. A base 28 is fixed. Thereafter, the side wall 28b of the base 28 is provided with a detent protrusion 28d for preventing the elastic repulsion member 52, which will be described later, from being pulled out above the rubber pressing plate 522. Thereafter, the base 28 is also made of a sheet metal integrally formed by punching and bending the sheet metal material, and is fixed to the base body 21 so as not to be relatively movable by welding or the like. In the vicinity of the front end of the side wall 26 of the base body 21, a shaft hole 261 for allowing the main shaft 4 to pass therethrough is provided. The clearance between the shaft hole 261 and the main shaft 4 is set to be extremely small so as not to interfere with the meshing of the teeth 6 and 7 in the assembled state. Further, a bracket 251 having a female screw hole 251a for attaching a mouse cover M and a guide member G, which will be described later, is fixed in front of the front wall 25. A positioning projection (not shown) is provided on the upper surface of the front portion of the bottom plate 24, and the plate member 23 is engaged with the positioning projection provided in the plate member 23. The base body 21 is in contact with the upper surface.

  As shown in FIGS. 26, 28, 29 and 33, the plate member 23 has a plate shape interposed between the base body 21 and the first teeth 6. Further, the plate member 23 is provided with a positioning hole 23a into which the positioning protrusion 8a provided on the first tooth holder 8 can be inserted.

  As shown in FIGS. 26 to 29 and 33, the second receiving base 3 is for urging the second teeth 7 in the clamping direction at the tip vicinity portion 3a. The second receiving base 3 includes a base body 31 supported by the main shaft 4 and a plate member 33 attached to the lower surface of the base body 31.

  As shown in FIGS. 26 to 29 and 33, the base body 31 includes a top plate 34, a pair of side walls 36 suspended from both side edges of the top plate 34, and a lower side from the front end of the top plate 34. And a rear wall 37 extended downward from the rear end of the top plate 34. By punching and bending the sheet metal material, It is made of integrally formed sheet metal. That is, the base body 31 has a U-shaped cross section having side walls 36 on both sides. The side wall 36 includes a notch 361 into which a later-described pressing member 53 provided in the operation handle 51 enters when the later-described operation handle 51 is not operated. A shaft hole 362 for penetrating the main shaft 4 is provided in the vicinity of the front end of the side wall 36. The clearance between the shaft hole 362 and the main shaft 4 is extremely small so as not to interfere with the engagement of the teeth 6 and 7 in the assembled state. Further, a shaft hole 363 is provided in the vicinity of the rear end of the side wall 36 to allow a sub shaft 10 to be described later to pass therethrough. Further, a positioning projection (not shown) is provided on the lower surface of the front portion of the top plate 34 by half punching or the like, and the plate member 33 is engaged with the positioning projection provided in the plate member 33. Is attached to the lower surface of the base body 31.

  As shown in FIGS. 26, 28, 29 and 33, the plate member 33 has a plate shape interposed between the base main body 31 and the second teeth 7. Further, the plate member 33 is provided with a positioning hole 33a into which the positioning protrusion 9a provided on the second tooth holder 9 can be inserted.

  Further, as shown in FIGS. 26, 28, 29, and 33, the first receiving base 2 and the second receiving base 3 are covered with a base cover 20 and a middle cover 30.

  The base cover 20 is made of synthetic resin, and is disposed on the outer side of the base body 21 as shown in FIGS. 26, 28, 29 and 33, and is attached to the first receiving base 2. The base body 21 has a shape that can cover the base body 21 from below, front, back, and both sides.

  The middle cover 30 is made of synthetic resin, and is disposed outside the front portion of the base body 31 as shown in FIGS. 26, 28, 29, and 33. It is fixed and has a shape that can cover the front portion of the base body 31 from above, from the front, and from both sides.

  Further, in this embodiment, a synthetic resin mouse cover M is attached to the front end portions of the base cover 20 and the middle cover 30. As shown in FIGS. 26, 28, 29 and 33, the mouse cover M has a beak shape having a paper insertion slot M1 for inserting paper, and a screw insertion with a counterbore hole at the bottom. The mounting part M2 provided with the hole M2a is provided. A paper insertion opening M1 of the mouse cover M communicates with a paper insertion space S formed between the teeth 6 and 7.

  In addition, between the paper insertion opening M1 of the mouse cover M and the first tooth 6, as shown in FIGS. 26 to 29 and FIG. A guide member G is provided for guiding into a paper insertion space S formed between the two. The guide member G includes a thin plate-like guide portion G0 that guides the lower surface of the sheet, and a mounting portion G1 that is integrally connected to the base end portion of the guide portion G0 and has a screw insertion hole G1a on the lower surface side. .

  Then, as shown in FIGS. 26 to 29 and FIG. 33, the screw cover 252 that has passed through the screw insertion holes M2a and G1a is fastened to the female screw hole 251a of the bracket 251, thereby the mouse cover M and the guide member. G is fastened to the base body 21 of the first receiving base 2 together.

  As shown in FIGS. 26 to 30, 33 and 34, the main shaft 4 pivotally attaches the first and second receiving bases 2 and 3 at tip vicinity portions 2a and 3a. The both teeth 6 and 7 are brought into contact with and separated from each other by rotating the receiving bases 2 and 3 around the main shaft 4.

  As shown in FIGS. 26 to 29, FIG. 33 and FIG. 35, the biasing mechanism 5 pushes and spreads the predetermined portions of the first and second receiving bases 2 and 3 to form the both teeth 6 and 7. More specifically, the first teeth 6 are formed by pushing the base end portions 2b and 3b of the first and second receiving bases 2 and 3 toward each other. And for applying a clamping pressure to the second teeth 7. The urging mechanism 5 includes an operation handle 51 provided on the second receiving base 3, an elastic repulsion member 52 provided on the first receiving base 2, and an outer peripheral surface thereof in contact with the elastic repulsion member 52. The predetermined portion of the first receiving base 2 is moved away from the predetermined portion of the second receiving base 3 through the elastic repulsion member 52 as the operating handle 51 is operated. A shaft-shaped pressing member 53 for pressing, and a return tension spring 54 for biasing the first tooth holder 8 and the second tooth holder 9 in the direction in which the teeth 6 and 7 are separated from each other are provided. Is.

  The operation handle 51 can rotate between a standby position (F) shown in FIGS. 26 and 28 and a final position (L) shown in FIGS. 27 and 29. As shown in FIGS. 26 to 29 and 33, the operation handle 51 includes a top body 511 and a handle body 51a having a U-shaped cross section having side walls 512 suspended from both side edges of the top panel 511, A handle cover 51b that covers the handle body 51a from above and from the side is provided. The handle main body 51a is configured to be fitted onto the second receiving base 3 in a state where the handle main body 51a is operated to the final position (L). That is, both side walls 512 of the handle body 51 a are brought into contact with the outer surface of the side wall 36 of the base body 31 of the second receiving base 3, and both side walls 512 at the base end portion of the operation handle 51 are connected to the second side wall 512. The support base 3 is pivotally attached to both side walls 36 of the base end portion 3b through the sub shaft 10 so as to be rotatable. A shaft hole 513 for penetrating the sub shaft 10 is provided in the vicinity of the rear end of the side wall 512. In addition, a hole 514 for constructing the pressing member 53 is provided at a position that is eccentric from a portion of the side wall 512 that passes through the shaft hole 513.

  As shown in FIG. 28, FIG. 29, FIG. 33 and FIG. 35, the pressing member 53 includes a pressing shaft 53a that is a shaft-like member installed between the side plates 512 of the operation handle 51, and the pressing shaft 53a. The outer peripheral surface 531 of the pressing member 53, that is, the outer peripheral surface of the collar 53b is in contact with the elastic repulsion member 52. Further, the pressing member 53 moves the base end portion 2 b of the first receiving base 2 from the base end portion 3 b of the second receiving base 3 through the elastic repulsion member 52 in accordance with the operation of the operation handle 51. It is a member that presses away.

  As shown in FIGS. 28, 29, 33 and 35, the elastic repulsion member 52 includes a rubber member main body 521 and a metal rubber pressing plate 522 provided on the upper surface of the member main body 521. It will be. The elastic repulsion member 52 is compressed by a predetermined stroke by the pressing member 53 while the operation handle 51 reaches the final position (L) from the standby position (F).

  The member main body 521 is attached to the upper surface of the base end portion 2 b of the first receiving base 2. The member main body 521 has an inclined portion 521b at the middle portion in the front-rear direction on the upper surface. The inclined portion 521b has an inclination that gradually rises from the front to the rear. A lower portion 521a which is a front side of the inclined portion 521b, that is, a portion on the main shaft 4 side, and a higher portion 521c which is a rear side of the inclined portion 521b, that is, a portion opposite to the main shaft 4, are provided on the upper surface of the member main body 521. Are both horizontal, and the lower portion 521a is lower than the higher portion 521c. In addition, a notch 521d that gradually descends downward is provided in the upper rear portion of the member main body 521. By providing the notch 521d, the variation of the elastic repulsion force of the member main body 521 with respect to the displacement is suppressed. For example, when the maximum height dimension of the member body 521 is 10 mm, the width dimension is 14 mm, and the front and rear depth dimensions are 20 mm, the shape of the notch 521d is a right-angled isosceles triangle having a side dimension of about 4 mm. The front-rear dimension of the high portion 521c is set to about 6 mm.

  The rubber pressing plate 522 is suspended downward from the top plate portion 523 for distributing and transmitting the load from the pressing member 53 to the member main body 521, and both the side edge, the front edge, and the rear edge of the top plate portion 523. A side regulating plate portion 524a, a front regulating plate portion 524b, a rear regulating plate portion 524c, and a retaining portion 525 extending forward from the lower end of the front regulating plate portion 524b are provided. The top plate portion 523 also has an inclined portion 523b having an inclination that gradually rises toward the rear in the middle portion in the front-rear direction of the upper surface. The other part of the upper surface of the top plate part 523 is horizontal, and the lower part 523a that is a part in front of the inclined part 523b is lower than the high part 523c that is a part in the rear of the inclined part 523b. is there. The rear restricting plate portion 524c can come into surface contact with the rear wall 28c of the first receiving base 2. On the other hand, the retaining portion 525 faces the detachment projection 28d of the rear base 28. The rubber pressing plate 522 is disposed above the member main body 521, and attached to the member main body 521 by letting the retaining portion 525 under the release prevention projection 28d while elastically deforming the member main body 521. To be able to.

  Accordingly, the urging mechanism 5 rotates the free end side of the operation handle 51 toward the first and second receiving bases 2 and 3 as shown in FIGS. 26 to 29 and 33. As a result, the pressing member 53 moves from the lower portion 523a of the top plate portion 523 through the inclined portion 523b to the high portion 523c while being in sliding contact with the top plate portion 523 of the rubber pressing plate 522 of the elastic repulsion member 52. Thus, the positional relationship between the sub shaft 10 and the pressing member 53 is set.

  Hereinafter, the first tooth 6 will be described.

  The said 1st tooth | gear 6 has the structure similar to what concerns on 1st embodiment except the point described below. Only differences from the first embodiment will be described below.

  Although not shown in the drawing, the first teeth 6 have notches on both left and right edges. Moreover, although illustration is abbreviate | omitted, one side edge part is distribute | arranged only the predetermined distance inside the upper part of a notch compared with the lower part of a notch. That is, the first tooth 6 has an asymmetrical shape as a whole and is integrally assembled to the first tooth holder 8 by an insert molding technique.

  Next, the second tooth 7 will be described.

  The second tooth 7 also has the same configuration as that according to the first embodiment except for the points described below. Only differences from the first embodiment will be described below.

  As shown in FIGS. 31 and 32, the second tooth 7 is made of a resin that is integrally wound around a tooth body 7x formed by sheet metal processing and a middle portion in the height direction of the tooth body 7x. The band 7y is provided.

  As shown in FIGS. 31 and 32, the tooth body 7x has cutouts 7x1 on both left and right edges. Further, at one side edge portion, an upper portion 7x2 of the notch 7x1 is arranged outside by a predetermined distance compared to a lower portion 7x3 of the notch. That is, the tooth body 7x has an asymmetric shape as a whole. Furthermore, a display portion 7x4 for distinguishing from the other surface is provided on one surface of the tooth body 7x by engraving or the like.

  As described above, the band 7y is integrally formed of synthetic resin around the middle portion in the height direction of the tooth body 7x using the tooth body 7x as an insert part. Further, the band 7y is provided with a projection 7y1 for determining the orientation when the band 7y is inserted into the second tooth holder 9.

  In the present embodiment, the second tooth 7 is separated from the second tooth holder 9 before assembly, and is positioned and fixed to the second tooth holder 9 by an adhesive during assembly. Is. That is, as shown in FIGS. 30 and 34, the second tooth 7 is inserted into a tooth insertion hole 91 a (described later) of the second tooth holder 9 and is engaged with the first tooth 6 by an adhesive. It is positioned and fixed to the second tooth holder 9.

  Next, the tooth holders 8 and 9 will be described.

  As shown in FIG. 30, the first tooth holder 8 and the second tooth holder 9 are in sliding contact with each other for positioning the shaft 4 of the both tooth holders 8 and 9 in the axial direction. Positioning surfaces 86 and 96 are provided.

  As shown in FIG. 30, the first tooth holder 8 is integrally formed of synthetic resin with the first tooth 6 as an insert part. The first tooth holder 8 is integrally provided with a holder main body 81 that holds the first teeth 6 and a single shaft insertion portion 82 that is formed behind the holder main body 81. The first tooth holder 8 is held by the first receiving base 2 in a positioned state. Specifically, the structure for attaching the first tooth holder 8 to the base body 21 via the plate member 23 is as follows. The tooth holder 8 has a positioning protrusion 8 a protruding downward on the lower surface, and the positioning protrusion 8 a is inserted into the positioning hole 23 a of the plate member 23. More specifically, the positioning projection 8a is tapered and press-fitted into the positioning hole 23a of the plate member 23. The tooth holder 8 is provided with a screw hole 8x that penetrates the positioning protrusion 8a. The screws 85 are inserted from below into screw insertion holes provided in the base main body 21 and the plate member 23 of the first receiving base 2 and screwed into the screw holes 8x. The base main body 21 and the plate member 23 are positioned relative to each other by the engagement of a positioning projection (not shown) and a positioning hole (not shown) as described above.

  Further, the first tooth holder 8 is provided with a locking wall 83 at a portion serving as a terminal end of the sheet insertion space S formed between the teeth 6 and 7. The locking wall 83 is positioned at the center of the locking wall 83 by contacting the corner of the paper inserted into the paper insertion space S so that the paper is positioned. A positioning portion 84 formed by cutting out into a triangular shape is provided.

  The shaft insertion portion 82 is provided with a shaft insertion hole 82 a for allowing the main shaft 4 to be inserted while ensuring a relatively large clearance C between the shaft insertion portion 82 and the main shaft 4. In the vicinity of the rear end of the shaft insertion portion 82, a notch 8b for connecting to one end of the tension spring 54 is provided.

  As shown in FIG. 30, the second tooth holder 9 is integrally formed of synthetic resin, and includes a holder main body 91 that holds the teeth 7 and a shaft insertion portion that is formed behind the holder main body 91. 92 is integrated. The second tooth holder 9 includes a pair of the shaft insertion portions 92 each having a positioning surface 96 on the opposing surface, and second shaft holders 9 on both sides of the shaft insertion portion 82 of the first tooth holder 8. The shaft insertion portions 92 forming a pair of the tooth holders 9 are arranged, and the positioning surfaces 86 and 96 of the shaft insertion portions 82 and 92 are brought into sliding contact with each other. The second tooth holder 9 is held by the second receiving base 3 in a positioned state. Specifically, the structure for attaching the second tooth holder 9 to the base body 31 via the plate member 33 is as follows. The tooth holder 9 has a positioning protrusion 9 a that protrudes upward, and the positioning protrusion 9 a is inserted into the positioning hole 33 a of the plate member 33. More specifically, the positioning projection 9a is tapered and press-fitted into the positioning hole 33a of the plate member 33. The tooth holder 9 is provided with a screw hole 9x that penetrates the positioning protrusion 9a. The screws 95 are inserted from above into screw insertion holes provided in the base main body 31 and the plate member 33 of the second receiving base 3, and screwed into the screw holes 9x. Note that the base body 31 and the plate member 33 are positioned relative to each other by the engagement of a positioning projection (not shown) and a positioning hole (not shown) as described above.

  As shown in FIGS. 30 and 34, the holder body 91 is provided with a tooth insertion hole 91 a for inserting the second tooth 7. The internal dimension of the tooth insertion hole 91a is slightly larger than the external dimension of the band 7y of the second tooth 7. Positioning between the tooth holder 9 and the second tooth 7 is performed after the second tooth 7 is inserted into the tooth insertion hole 91a with the operation handle 51 in the standby position (F). Do as follows. That is, after the operating handle 51 is moved from the standby position (F) to the final position (L) and the first teeth 6 and the second teeth 7 are engaged, the second teeth 7 and the second teeth 7 are engaged. A gap between the tooth holder 9 and the tooth insertion hole 91a is adhered with an adhesive or the like, and the second tooth 7 and the second tooth holder 9 are fixed.

  The shaft insertion portion 92 is provided with a shaft insertion hole 92 a for allowing the main shaft 4 to be inserted while securing a relatively large clearance C between the shaft insertion portion 92 and the main shaft 4. In the vicinity of the rear end of the shaft insertion portion 92, a notch 9b for connecting to the other end of the tension spring 54 is provided.

  Furthermore, in the present embodiment, an operation completion detection member 39 is provided on the upper surface of the rear portion of the base body 31 of the second receiving base 3. As shown in FIGS. 36 and 37, the operation completion detection member 39 includes a base 391 for attaching to the upper surface of the base body 31, and a claw portion 392 that is provided integrally with the base 391 and is elastically deformable. It has. The claw portion 392 is located at the middle portion in the longitudinal direction, and when the operation handle 51 reaches the final position (L), the upper surface is located at the front end portion of the operation handle 51 and the protruding portion 392a. 37, the operation handle 51 has a claw 392b that moves downward beyond the protrusion 391a of the base 391 when the operation handle 51 reaches the final position (L).

  Next, the operation of the binding tool X1 will be described with reference to FIGS. 28, 29, and 33. FIG.

  First, as shown in FIG. 28, in the standby position (F), the first receiving base 2 is operated by the action of the tension spring 54 provided between the first tooth holder 8 and the second tooth holder 9. And the base end portions 2b and 3b of the second receiving base 3 are in the closest state. As a result, the collar 53 b is in contact with the lower portion 523 a of the top plate portion 523 of the elastic repulsion member 52 in a state where the operation handle 51 is raised upward. In this state, the tooth tips 6b and 7b of the first tooth 6 and the second tooth 7 are held apart from each other.

  In the standby position (F) as described above, a plurality of stacked sheets are inserted into the sheet insertion gap S formed between the first teeth 6 and the second teeth 7, and the locking wall Positioning is performed at a position in contact with 83.

  Thereafter, when the operation handle 51 is rotated downward, the sub shaft 10 is moved upward with the pressing member 53 as a fulcrum until the second teeth 7 come into contact with the paper. The second receiving base 3 is rotated by being biased upward. As a result, the sheet is sandwiched between the first teeth 6 and the second teeth 7.

  When further operating force is applied from this state, as shown in FIG. 33, the pressing member 53 presses downward while moving the upper surface of the top plate portion 523 of the rubber pressing plate 522 backward, and the second The teeth 7 are strongly urged in the direction of the first teeth 6 to pinch the paper. During this movement, the pressing member 53 moves from the lower portion 523a over the inclined portion 523b to the higher portion 523c while being in sliding contact with the upper surface of the top plate portion 523. In the stage where the operation handle 51 is further rotated to the final position (L) as shown in FIG. 29 from the stage where the sheet is compressed to the limit, the pressing member 53 elastically deforms the elastic repulsion member 52 exclusively. Will move downward. Therefore, the operation handle 51 is allowed to rotate while gradually increasing the clamping force of the teeth 6 and 7 against the paper. Here, with the downward movement of the pressing member 53 and the elastic deformation of the member main body 521 of the elastic repulsion member 52, the rear regulating plate portion 524c of the rubber pressing plate 522 is formed on the rear wall 28c of the first receiving base 2. The rubber pressing plate 522 is slidably brought into contact with the rubber pressing plate 522 so as to be smoothly moved up and down.

  The paper subjected to such a clamping pressure is compressed and deformed into a cross-sectional waveform while the paper material is expanded. At that time, in the region where the inclined surface portion of the first tooth 6 and the inclined surface portion of the second tooth 7 face each other, the strongest compressive force is applied to the paper. The anchor effect and the hydrogen bonding effect are exhibited, and a plurality of sheets are bound to each other.

  Then, when the operation handle 51 reaches the vicinity of the final position (L), as shown in FIGS. 29 and 37, the claw 392b of the operation completion detection member 39 moves downward beyond the protrusion 391a, and the operator feels a click feeling. And provide a click sound.

  In addition, it is preferable to set the width dimension of the press portion, which is the joining portion of the paper, to be 0.6 to less than 4.0 mm. More desirably, the width dimension is set to about 1.4 mm or about 1.6 mm.

  Even if the configuration of the binding tool X1 according to the present embodiment is adopted, the teeth 6 and 7 have the same configuration as that of the binding tool 1 according to the first embodiment, and therefore the teeth 6 and 7 according to the first embodiment. The effect derived from the configuration can be obtained similarly.

  Further, by adopting the configuration of the binding tool X1 of the present embodiment, the following effects can be obtained. That is, a base 391 for attaching to the upper surface of the base body 31 and a claw portion 392 provided integrally with the base 391 and elastically deformable are provided on the upper surface of the base body 31 of the second receiving base 3. An operation completion detecting member 39 is provided, the claw portion 392 has a claw 392b at the tip thereof, and the claw 392b is a projection 391a of the base 391 when the operation handle 51 reaches the final position (L). When the operation handle 51 reaches the final position (L), a click feeling is given to the user. Therefore, the final position (L) of the operation handle 51 can be clearly recognized by the operator, and the occurrence of binding failure or the like due to insufficient clamping pressure can be effectively suppressed.

  When the operation handle 51 is in the standby position (F), the position where the pressing member 53 abuts against the elastic repulsion member 52 is lowered, that is, the lower portion 521a is provided on the member main body 521, and the rubber pressing plate 522 Since the lower portion 523a is also provided on the top plate portion 523, the height of the standby position (F) can be set smaller than that according to the first embodiment. Therefore, the binding tool X1 can be easily held regardless of the size of the hand.

  Since the rear end surface of the rubber pressing plate 522, that is, the rear surface of the rear regulating plate portion 524c, can be brought into surface contact with the rear wall 28c of the first receiving base 2, the rear regulating plate portion 524c is brought into contact with the rear wall 28c. It can be slid against. Therefore, the rubber pressing plate 522 can be raised and lowered smoothly. As a result, it is possible to reduce the possibility that the rear end of the rubber pressing plate 522 is caught by the first receiving base 2 even though the inclined portion 523b is provided in the top plate portion 523 of the rubber pressing plate 522. , Can improve the operation reliability.

  The clearance between the main shaft 4 and the shaft holes 261 and 362 of the first and second receiving bases 2 and 3 is greater than the clearance C between the main shaft 4 and the first and second tooth holders 8 and 9. Therefore, the first and second receiving bases 2 and 3 are positioned by the main shaft 4. Therefore, as long as the second teeth 7 are bonded to the second tooth holder 9 with an adhesive during the assembly process, the first teeth 6 and the second teeth 7 are always accurately engaged with each other. Become. In particular, the tooth holders 8 and 9 are provided with positioning protrusions 8a and 9a having a tapered shape, and these positioning protrusions 8a and 9a are press-fitted into the positioning holes 23a and 33a of the plate members 23 and 33 of the receiving bases 2 and 3, respectively. Therefore, the tooth holders 8 and 9 holding the teeth 6 and 7 can be fixed to the receiving bases 2 and 3 in an accurately positioned state. Therefore, the teeth 6 and 7 are always accurately fixed to the receiving bases 2 and 3, and the accurate meshing state can be maintained for a long time.

  In addition, the second tooth 7 includes a tooth body 7x formed by sheet metal processing, and a resin band 7y wound integrally around the middle portion of the tooth body 7x in the height direction. Therefore, the resin band 7y can be similarly adhered to the resin tooth holder 9 via the adhesive, and the second teeth 7 can be more firmly attached to the second tooth holder 9.

  Since the notch 521d is provided in the rear upper part of the member main body 521 of the elastic repulsion member 52, the following problems can be solved. That is, when the shape of the member main body 521 is a rectangular parallelepiped, when the number of sheets to be bound increases and the member main body 521 is pushed in more, the second main body 521 passes through the rubber pressing plate 522 and the pressing member 53. There is a characteristic that the reaction force transmitted to the teeth 7 becomes extremely larger than when the number of sheets to be bound is small. However, by providing a notch 521d at the rear upper part of the member main body 521, a sheet to be bound is provided. A sudden increase in the reaction force when the number of types increases can be suppressed.

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

  For example, the position of the press portion provided on the paper is not limited to the position along the side of the paper, and may be a corner of the paper. Furthermore, a press part is not restricted to one with respect to a booklet, You may have a some press part.

  Hereinafter, another embodiment of the present invention will be described with reference to FIGS. 38 to 41. 38 to 41, the same parts as those of the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. For convenience, a line is attached to an intermediate point between the apex of the mountain-shaped deformation portion P21 and the valley bottom of the valley-shaped deformation portion P23. In addition, a binding tool for making a booklet P, which will be described later, is not shown in the drawing. However, as in the above-described embodiment, a plurality of stacked sheets are arranged between pairs of teeth that contact and separate in a certain direction. The booklet P can be produced by binding the sheets with both teeth and binding the sheets to form a booklet P. Also good.

  For example, the booklet P shown in FIG. 38 is formed by bundling a plurality of sheets P1, and these sheets P1 are joined to each other at one press part P2 set at the corner part P12. More specifically, the press portion P2 is formed across one end side P13 of the paper P1 and another end side P14 adjacent to the end side P13, and has a trapezoidal shape in plan view. ing. More specifically, boundary portions P24 and P25 between the end portion in the longitudinal direction of the press portion P2 and the unpressed portion are formed obliquely with respect to the paper P1. On the other hand, since the end in the short direction of the press part P2 does not exist on the paper P1, the edges P13 and P14 of the paper P1 have a side-view wave shape.

In such a case, when the sheet P1 is turned, the sheet P1 is moved using the boundary portion P24 with the end portion in the longitudinal direction that exhibits resistance as compared to the end portion in the short direction. , You can make use of the holding power. That is, in the case where the press portion P2 is arranged in parallel to the edge P11 of the paper P1 as shown in the above-described embodiment, the direction in which the paper P1 is turned is the boundary portion of the end portion in the longitudinal direction of the press portion P2. Two types of cases are possible: a case where P24 and P25 are used as fulcrums, and a case where a boundary portion P26 at the end in the short direction of the press part P2 is used as a fulcrum. In the former case, the holding force can be utilized, but in the latter case, the sheet P1 is turned along the wave shape of the press portion P2, so that the retaining force cannot be utilized. Arise. However, in the case of this modification, the user can uniquely determine the direction in which the paper P1 is turned, and thus the expected holding force can be obtained. In addition, when a wave shape is formed by the press portion P2 along the edges P13 and P14 of the paper P1 as in this modification, it is difficult to turn the paper P1 from the short side of the press portion P2. P1 can be bound firmly. The press part P2 may be formed over at least one of the edges P13 and P14 of the paper P1. More specifically, even if the press portion P2 is formed so that one end portion in the short direction exists on the paper P1, and the other end portion in the short direction does not exist on the paper P1. Good.

  Further, the booklet P shown in FIG. 39 is formed by bundling a plurality of sheets P1, and these sheets P1 are joined to each other at one press portion P2 set on the edge P11. More specifically, the press part P2 is formed along the edge of the end side P11 of the paper P1, and has a rectangular shape in plan view. More specifically, a boundary portion P24 between one end portion in the longitudinal direction of the press portion P2 and the unpressed portion is formed in parallel to the paper P1. On the other hand, since the other end portion in the longitudinal direction of the press portion P2 does not exist on the paper P1, the end side P11 of the paper P1 has a side view wave shape.

  If it is such, since the wave shape by the said press part P2 is formed along the edge P11 of the paper P1, the paper P1 can be bound firmly.

  Further, the booklet P shown in FIG. 40 is formed by bundling a plurality of sheets P1, and these sheets P1 are joined to each other at a press part P2 set at an end P11, and the press A fold line P3 is provided in the vicinity of the portion P2, specifically, on the end portion in the longitudinal direction of the press portion P2. The press part P2 is the same as that of the above-described embodiment, and is formed in a state where the edge P11 of the paper P1 is separated from the edge of the paper P1 by a certain distance, and has a rectangular shape in plan view. I am doing. The fold line P3 is provided in parallel to the longitudinal direction of the press portion P2, and is a boundary portion between the long side portion on the opposite end side of the paper P1 and the unpressed portion in the press portion P2. It is formed at a position away from P24 by a predetermined distance. The predetermined distance may be zero. That is, the fold line P3 may be in contact with the boundary portion P24.

  In this case, when the sheet P1 is turned, the sheet P1 is moved with the fold line P3 as a fulcrum before the boundary P24 at the end in the longitudinal direction. You can make use of your power. Further, in the case of this modification, since the user can uniquely determine the direction in which the paper P1 is turned, the expected holding force can be obtained. Such a fold line P3 is an example of an escape portion for reducing the force applied to the press portion P2 when the paper P1 is turned. The folding line P3 may be formed by the same binding tool 1 as that for forming the press portion P2, or may be formed by using a tool different from the formation of the press portion P2. May be. In addition to the fold line P3, a perforation may be used. Furthermore, these escape portions are not limited to linear ones.

A booklet P shown in FIG. 41 is formed by bundling a plurality of sheets P1, and these sheets P1 are joined to each other at a press part P2 set at an end side P11, and the press P1. The slits P4 are provided radially in the vicinity of the portion P2, specifically, around the press portion P2. More specifically, the press part P2 is the same as that of the above-described embodiment, and is formed in a state where the edge P11 of the paper P1 is spaced apart from the edge of the paper P1 by a certain distance. There is a rectangular shape in plan view. The slit P4 is formed at a position separated by a predetermined distance from a corner portion P27 where the longitudinal end portion and the short portion end portion of the press portion P2 intersect. The predetermined distance may be zero. That is, the slit P4 may be in contact with the corner portion P27.

  In such a case, when binding the overlapped sheets P1, specifically, when a part of the sheet P1 is deformed into a waveform and the press part P2 is formed, the sheet P1 around the press part P2 is formed. The tensile resistance can be reduced. The slit P4 is another example of a relief portion for reducing the force applied to the periphery of the press portion P2 when the press portion P2 is formed on the paper P1. The slit P4 may be formed by the same binding tool 1 that forms the press part P2, or may be formed by using a tool different from the formation of the press part P2. Also good. The position, shape and the like for forming the slit P4 are not limited to those shown in the drawings, and various changes can be made.

  Further, the shape of each tooth is not limited to the wave shape described above, and can be variously changed. As an example, a plurality of cone-shaped, that is, conical tooth surfaces whose tooth tips gradually decrease in diameter toward the tip may be provided intermittently in the longitudinal direction. If it is such, a press part will be provided with the circular compression part formed intermittently in the longitudinal direction. In addition, even in the case of wavy teeth, the shape of the valley-side curved surface portion that has less influence on the compression of the paper is limited to that described above compared to the shape of the crest-side curved surface portion or the inclined surface portion that greatly affects the compression of the paper. However, various modifications are possible.

  Further, the inclined surface portion is not limited to the flat surface shape as described above, and can be variously changed, for example, a gently curved shape. As a specific example, as shown in FIG. 42 and FIG. 43, the inclined surface portions that form predetermined inclination angles A1 and A2 with respect to the paired teeth 6 and 7 that make contact and separation in a certain direction. 62 and 72 are provided, respectively, and a part of the paper P1 arranged by laminating a plurality of sheets between the teeth 6 and 7 at the inclined surfaces 62 and 72 of the pair of teeth 6 and 7 extends the paper material. A binding tool 1 capable of binding these sheets of paper P1 by press-contacting with each other, and at least a normal line corresponding to the shortest distance between the inclined surface portions 62 and 72 of the paired teeth 6 and 7 The binding tool 1 in which the length L4 in the direction perpendicular to the normal line of the main press contact region by the inclined surface portions 62 and 72 is less than 0.18 mm in a state where the length L3 is close to 0.09 mm. In the present embodiment, in particular, the length L of the normal line There are illustrated the binding tool 1 becomes line contact of a said length L4 approximately 0mm while being approached such that 0.09 mm. Specifically, at least one of the teeth 6 and 7 has a plurality of crest-side curved surface portions 61 and 71 that form a crest of the teeth 6 and 7, and a plurality of trough-side curved surface portions 63 that form a trough of the teeth 6 and 7. , 73 are formed with inclined surface portions 62, 72 having a protruding portion 67, and more specifically, the first tooth 6 has a width between the mountain-side curved surface portion 61 and the valley-side curved surface portion 63. A rib-like protruding portion 67 extending in the direction is provided. That is, the first tooth 6 has a non-flat inclined surface portion 62, and the protruding portion is formed on the portion of the inclined surface portion 62 of the first tooth 6 that faces the inclined surface portion 72 of the second tooth 7. 67, and the protruding portion 67 of the inclined surface portion 62 of the first tooth 6 and the inclined surface portion 72 of the second tooth 7 form a main pressure contact region linearly, and the main pressure contact region and the vicinity of this region The paper is pressed with

If it is such, the paper P1 can be pinched between the said protrusion part 67 and the tooth surface 7c which faces this protrusion part 67. FIG. Therefore, an effect similar to that of the above-described embodiment can be obtained. In addition, the protrusion part of an inclined surface part may be provided in a 2nd tooth | gear, and may be provided in both a 1st tooth | gear and a 2nd tooth | gear. Further, the shape of the protruding portion is not limited to that shown in the figure. For example, the length L3 of the normal corresponding to the shortest distance between the inclined surface portions 62 and 72 of the paired teeth 6 and 7 is 0.09 mm. In a state of being close to each other, a binding tool that has a linear contact length L4 in a direction perpendicular to the normal line of the main pressure contact region by the inclined surface portions 62 and 72, that is, linearly The main pressure contact area may be formed, and the main pressure contact area and the paper may be pressed in the vicinity of this area. The protruding portion may be provided intermittently in the tooth width (short) direction to form the main pressure contact region in a dot shape. Further, the protruding portion may be formed separately from the teeth.

  In the binding tool of the present invention, (1) the absolute value of the inclination angle with respect to the contact / separation direction of the teeth of the inclined surface portion is less than 38 °, (2) corresponding to the shortest distance between the inclined surface portions of the pair of teeth. The length of the main pressure contact region by the two inclined surface portions in the direction perpendicular to the normal line is less than 0.18 mm in a state where the normal line length is close to 0.09 mm. (3) The paper As long as at least one of the material elongation ratios exceeds 1.32 and is 1.60 or less, the bound paper has a certain level of holding power while keeping the energy required for operation low. can do. That is, as in the above-described embodiment, in addition to the binding tool having all the conditions (1), (2), and (3), only the condition (1), (2), or (3) is provided. , Those having the conditions (1) and (2), those having the conditions (2) and (3), those having the conditions (1) and (3). Of course.

  The binding tool of the present invention may be used not only as a stationary type in which the first receiving base is arranged on the table, but also as a handy type that is used by placing the hand on the first receiving base and the operation handle. In this case, the first receiving base may be positioned on the upper side and the operation handle may be positioned on the lower side so that the vertical direction may be reversed from that of the above-described embodiment. It is.

  Further, the binding tool of the present invention is not limited to binding two to five sheets of paper. For example, any binding tool may be used as long as it binds a plurality of sheets such as six or more sheets. Good.

  As long as the paper is in sheet form, various changes such as paper or plastic can be made. In addition, if a plurality of sheet bodies made of the same quality material are bound, it is possible to reduce the trouble in sorting and discarding.

  In the present embodiment, the manual operation of the operation handle has been described. However, the operation handle may be operated electrically. Even in this case, it is not necessary to apply a large operating force, and an effect of being able to cope with an actuator having a small capacity is obtained. That is, when a mechanical force is applied using a motor or the like, the required energy is smaller than that of the conventional one. Therefore, it can be driven by a relatively small motor, which can contribute to downsizing of the binding machine.

  The operation handle is not limited to the reciprocating lever shown in the present embodiment, but may be a dial type that rotates in one direction, a slider type that operates linearly, or the like.

  Moreover, you may provide the return mechanism for returning each component to an initial state. For example, if the return mechanism is provided with a coil spring that moves the second receiving base upward, the operation handle returns to the initial position as the second receiving base moves upward.

  In addition, the angle of the chamfered portions formed on both sides in the thickness direction of the metal material at the tooth tip is not set to 40 ° to 60 ° as in the above-described embodiment, but is set to a smaller angle, for example, 20 ° to 30 °. May be.

  The tooth valley may be provided with an inclination, and both ends of the tooth valley may be chamfered.

  The entire tooth may be formed in a tapered shape with the thickness dimension gradually decreasing from the proximal end to the distal end.

  The smoothness of the tooth surface may be different between the peaks and valleys. More specifically, the surface of the valley portion may be formed more smoothly than the surface of the mountain portion.

  In the description of the above-described embodiment, the expressions “up and down”, “left and right” and “front and back” are used, but these directions are for convenience, and the direction of installation of the members is described above. Of course, it is not restricted to what concerns on embodiment.

  In addition, various changes may be made without departing from the spirit of the present invention.

P1 ... Paper 1 ... Binding tool 6, 7 ... Teeth 61, 71 ... Mountain side curved surface part 611, 711 ... End part 62, 72 ... Inclined surface part 63, 73 ... Valley side curved surface part 631, 731 ... End part 66, 76 ... Inclined Guide part A1, A2 ... Inclination angle L11, L21 ... Half of the length along the waveform of the mountain side curved surface part L12, L22 ... Length along the waveform of the inclined surface part L3 ... Corresponding to the shortest distance between the inclined surface parts of the teeth The length of the normal line L4 ... the length in the direction perpendicular to the normal line of the main pressure contact region by both inclined surface portions

The present invention employs the following configuration in order to solve the above-described problems. That is, the binding tool according to the present invention includes a pair of teeth that contact and separate in a certain direction, and an inclined surface portion that forms a predetermined inclination angle with respect to the contact and separation direction. surface with a binding tool which is capable of binding these sheets by pressing while was accompanied by elongation of the sheet material part of paper arranged by plural stacked between the teeth, the pre Symbol pairs The length in the direction perpendicular to the normal line of the main pressure contact region by the two inclined surface portions in a state where the normal line corresponding to the shortest distance between the inclined surface portions of the formed teeth is close to 0.09 mm There is characterized and Turkey falls below a 0.18mm.

Binding device of the present invention, by the both inclined surface portion in a state in which the length of the normal line is brought close to a 0.09mm corresponding to the shortest distance of the inclined surface portion between the teeth forming the (1) pre-Symbol pairs length in the direction orthogonal to the normal line of the main press region that falls below the 0.18 mm, if also the a satisfies the condition that, while suppressing the energy required for the operation, stapled sheets is equal to or greater than a predetermined It is possible to secure the holding power. That is, in the binding tool of the above-described embodiment , in addition to the condition (1), (2) the absolute value of the inclination angle with respect to the contact / separation direction of the teeth of the inclined surface portion is less than 38 °, (3) the paper material elongation ratio is greater than 1.32 to 1.60, while satisfying the condition that they (1), (2), in addition to the fastening tool with a (3) all conditions ( those with only the condition of 1), (1) those with conditions and conditions only (2) of, (1) conditions and (3) conditions of or may be provided with only of Of course.

Claims (7)

Each pair of teeth contacting and separating in a certain direction is provided with an inclined surface portion having a predetermined inclination angle with respect to the contacting and separating direction, and a plurality of layers are laminated between the teeth at the inclined surface portions of the pair of teeth. A binding tool capable of binding these sheets by press-contacting a part of the distributed sheets with expansion of the sheet material,
The absolute value of the inclination angle with respect to the tooth contact / separation direction of the inclined surface portion is less than 38 °,
A direction perpendicular to the normal of the main pressure contact region by the two inclined surface portions in a state where the normal corresponding to the shortest distance between the inclined surface portions of the pair of teeth is close to 0.09 mm. Less than 0.18 mm,
The elongation rate of the paper material is more than 1.32 and not more than 1.60.
A binding tool characterized by satisfying at least one of the above. Each of the teeth includes a plurality of crest-side curved surfaces forming a crest of teeth, a plurality of trough-side curved surfaces forming a trough of teeth, and between the end of the crest-side curved surface and the end of the trough-side curved surface And a plurality of the inclined surface portions formed continuously from each other, and a tooth surface having a corrugated cross section is formed by the mountain side curved surface portion, the valley side curved surface portion, and the inclined surface portion. Binding tool. The binding tool according to claim 1 or 2, wherein an absolute value of the inclination angle with respect to a tooth contact / separation direction of the inclined surface portion is 25 ° or more and less than 38 °. A direction perpendicular to the normal of the main pressure contact region by the two inclined surface portions in a state where the normal corresponding to the shortest distance between the inclined surface portions of the pair of teeth is close to 0.09 mm. The binding tool according to claim 1, 2, or 3, wherein the length of the wire is greater than 0 mm and less than 0.18 mm. The binding tool according to claim 1, 2, 3, or 4, wherein an elongation rate of the paper material is 1.36 or more and 1.47 or less. The binding tool according to claim 2, wherein half of the length of the mountain-side curved surface portion along the waveform is equal to or longer than the length of the inclined surface portion along the waveform. The binding tool according to claim 2, wherein a half of the length of the mountain-side curved surface portion along the waveform is equal to a length of the inclined surface portion along the waveform.

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