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Binding

A technology for utensils and paper, which is applied in binding and other directions, can solve the problem of large operating force of the operating handle, and achieve the effect of energy suppression

Active Publication Date: 2017-09-15
KOKUYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the conventional binding tool, in order to compress the paper to exert a holding force of more than a certain level, there is a problem that the operating force applied to the operating handle becomes too large.
In other words, when the operation handle is operated within the practical operating force range, there is a problem that the holding force between the sheets of paper does not become a practical holding force.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] ・Width dimension L7 of the above press part P2: 4mm

[0114] ・Length dimension L8 of the above punching part P2: 10mm

[0115] · Number of crests: 10

[0116] ・Absolute value of the inclination angles A1 and A2 of the inclined surfaces 62 and 72 with respect to the approaching and separating directions of the teeth 6 and 7: 27°

[0117] Half of the length L11 and L21 of the above-mentioned crest-side curved parts 61 and 71 along the above-mentioned waveform: 0.24 mm

[0118] · Lengths L12, L22 of the inclined surface portions 62, 72 along the waveform: 0.24 mm

[0119] Half of the length L13, L23 of the peak-side curved surface 71, 61 of the other tooth 7, 6 facing the trough-side curved surface 63, 73 of one tooth 6, 7 along the above-mentioned waveform: 0.24 mm

[0120] Elongation: 1.44

[0121] · In a state where the length L3 of the normal line corresponding to the shortest distance between the above-mentioned inclined surface portions of the pair of teeth 6, 7 ...

Embodiment 2

[0123] ・Width dimension L7 of the above press part P2: 4mm

[0124] ・Length dimension L8 of the above punching part P2: 10mm

[0125] · Number of crests: 10

[0126] The absolute value of the inclination angles A1 and A2 of the inclined surface portions 62 and 72 with respect to the approaching and separating directions of the teeth 6 and 7: 25°

[0127] Half of the length L11 and L21 of the above-mentioned crest-side curved parts 61 and 71 along the above-mentioned wave form: 0.245 mm

[0128] · Length L12, L22 of the inclined surface portions 62, 72 along the waveform: 0.22 mm

[0129] Half of the length L13, L23 of the peak-side curved surface 71, 61 of the other tooth 7, 6 facing the trough-side curved surface 63, 73 of one tooth 6, 7 along the above-mentioned waveform: 0.245 mm

[0130] Elongation: 1.461

[0131] ・Length L4 in the direction perpendicular to the normal line of the main pressure-bonding region of the two inclined surface parts 62 and 72 in the above-men...

Embodiment 3

[0133] ・Width dimension L7 of the above press part P2: 4mm

[0134] ・Length dimension L8 of the above punching part P2: 10mm

[0135] · Number of crests: 10

[0136] ・Absolute value of the inclination angles A1 and A2 of the inclined surfaces 62 and 72 with respect to the approaching and separating directions of the teeth 6 and 7: 32.5°

[0137] Half of the length L11, L21 of the above-mentioned crest-side curved parts 61, 71 along the above-mentioned wave form: 0.22 mm

[0138] · Lengths L12, L22 of the inclined surface portions 62, 72 along the waveform: 0.12 mm

[0139] Half of the length L13, L23 of the peak-side curved surface 71, 61 of the other tooth 7, 6 facing the trough-side curved surface 63, 73 of one tooth 6, 7 along the above-mentioned waveform: 0.22 mm

[0140] Elongation: 1.36

[0141] ·Length L4 of the main pressure-bonding region of the two inclined surfaces 62 and 72 in the direction perpendicular to the normal line in the above assumed approach state: 0...

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Abstract

[Problem] To provide a binding tool with which at least a given holding force can be secured for the bound sheets even as the energy required for operation is kept low. [Solution] A binding tool capable of binding multiple sheets that have been stacked between a pair of teeth by pressing a portion of said sheets with the inclined surfaces of said teeth while stretching the sheet material. The binding tool is characterized in satisfying at least one of the following: (1) the absolute value of the angle of inclination of the inclined surface with respect to the direction in which the teeth advance and retract is less than 38°; (2) when the teeth are brought close to each other so that the length of a normal line that corresponds to the shortest distance between the inclined surfaces of the pair of teeth 0.09 mm, the length in the direction orthogonal to said normal line of the main region of pressurization by the two inclined surfaces is less than 0.18 mm; and (3) the sheet material stretching rate is greater than 1.32 and equal to or less than 1.60.

Description

technical field [0001] The present invention relates to a binding tool that does not use metal staples, among binding tools that bind together the ends of a plurality of stacked sheets of paper. Background technique [0002] In the past, the following type is known as this binding tool: a part of paper that is stacked and arranged between a pair of teeth that are close to each other in a certain direction, is compressed in the thickness direction by the teeth, thereby Paper is bound (for example, refer to Patent Document 1). [0003] However, in the conventional bookbinding tool, in order to compress the paper to exert a holding force greater than a certain level, there is a problem that the operating force applied to the operating handle becomes too large. In other words, when the operation handle is operated within the practical operating force range, there is a problem that the holding force between the sheets of paper does not become a practical holding force. [0004]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B42B5/00
CPCB42B5/00
Inventor 山田登志子兴津彰规长谷川草
Owner KOKUYO CO LTD