JP2000203186A - Binding tool and file with binding tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a binding tool of superior strength to be easily manufactured and assembled and to be easily separated when being thrown away. SOLUTION: A binding tool is provided with a base section 11, a base 10 on which supporting walls 12 and 13 in two lines disposed in upright are formed above horizontal base section along the longitudinal direction, a press plate 30 supported to be movable in parallel with the supporting walls 12 and 13 in two lines on the base through a parallel link mechanism 20 having a pair of cranks 21, 21 and brought into contact with the base section 11 of the base 10, an operation lever 40 supported to be rocked on the supporting walls 12 and 13 in two lines of the base 10 and a link spring 50 positioned between the cylinder link mechanisms 20, linked with the operation lever 40, moving in parallel the press plate 30 and pressing the press plate 30 on the base section 11 of the base 10 on the pressing-down position of the operation lever 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding device for holding and binding paper sheets, and more particularly, to holding a paper sheet between a base plate and a pressing plate which can be moved in parallel by operating a swingable operation lever. And a file provided with the binding device.

[0002]

2. Description of the Related Art Conventionally, a binding device which is fixed to a file or the like and presses and binds a sheet is a metal base having a rising wall portion and a horizontal base, and an operation lever which is swingably supported by the base. And a pressing plate that is supported by the base via a parallel link mechanism so as to be able to move in parallel and that cooperates with the operation lever to hold and bind the sheets together with the horizontal base of the base. In this type of binding device, it is necessary to press the pressing plate against the base with a strong spring force in order to hold the sheets, and the base and the parallel link mechanism are conventionally made of metal.

[0003]

However, in the above-mentioned binding device, a metal base, a plastic operation lever, and the like are mixed, and the metal parallel link mechanism requires a caulking operation, and thus the manufacturing is required. Is complicated. Further, when discarding this binding device, it is necessary to separate the metal portion from the plastic portion, but it is not easy to separate the caulked portion of the metal, and there is a risk of injury during the separating operation.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. Even if a plastic base or a parallel link mechanism is used, there is no problem in strength, production and assembly can be easily performed, and separation at the time of disposal is possible. It is an object of the present invention to provide a binding device that can easily perform the binding.

[0005]

In order to achieve the above object, a binding device according to the present invention comprises a base having a horizontal base and two rows of support walls extending longitudinally from the base. When,
A pressing plate which is supported by a parallel link mechanism having a pair of cranks on two rows of support walls of the base and which can contact the base of the base, and a two rows of support walls of the base An operating lever rotatably supported, and a parallel movement of the pressing plate interlocked with the operating lever positioned between the parallel link mechanism and a base of the base at a position where the operating lever is pushed down. And a link spring pressing the link spring.

The link spring includes a spring portion held by the base, an interlocking end portion extending from one end of the spring portion and connected to the operation lever, and a link plate extending from the other end of the spring portion and engaging with the pressing plate. It is advantageous if the pressing end is bent toward the base of the base.

A pair of cranks of the parallel link mechanism project in one direction from one side of the arm and are pivotally supported by the support wall of the base, and project in the other direction from the other side of the arm. The pivot shaft and a holding shaft which is parallel to the step, are prevented from falling off in the normal swing range of the crank, and the base, the operating lever, the pressing plate and the crank of the parallel link mechanism are preferably formed of plastic. . It is preferable that a mounting hole for inserting a mounting device for fixing the binding device to the mount of the file is formed in the support wall portion near the center of the base.

[0008] A file provided with a binding device according to the present invention is characterized in that the binding device configured as described above is fixed to a backing paper by a detachable attachment such as an attachment screw.

According to the binding device and the file including the binding device configured as described above, the base body is superior in strength by the two rows of support walls, and the operating lever and the parallel link mechanism are provided by the two rows of support walls. The support is stable because it is supported.
For this reason, paper sheets can be stably bound for a long period of time, and even if all parts except the link spring are made of plastic, the paper sheets can be similarly stably bound for a long period of time. Moreover, the disassembly is easy, and for example, plastic parts and metal parts can be easily separated at the time of disposal.

[0010]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of a binding device according to an embodiment of the present invention in a state where an operation lever is lifted, FIG. 2A is a plan view of FIG. 1, and FIG. FIG. 3 is a right side view of FIG. 1, FIG. 4 (a) is an enlarged sectional view of a main part along line BB of FIG. 2, FIG. 4 (b) is a bottom view of the pressing plate, FIG.
4 (c) is an enlarged view taken along the line CC in FIG. 4 (b), FIG. 5 shows a mechanism for preventing the lever from falling off, FIG. 5 (a) is a partially broken side view showing a state in which the lever cannot escape, and FIG. FIG. 6 is an exploded perspective view of an essential part showing a mounted state of a link spring, and FIG.
FIG. 3 is a schematic perspective view showing a state in which the binding device is fixed to a file.

1 to 7, a binding device 1 comprises a base 10 having a horizontal base 11 and two rows of support walls 12 and 13 extending from the base in the longitudinal direction. 2
The base 1 is supported by the row support walls 12 and 13 via a parallel link mechanism 20 having a pair of cranks so as to be able to move in parallel.
0, which can be brought into contact with the base 11 of the base member, an operation lever 40 which is swingably supported by two rows of support walls 12, 13 of the base, and an operation lever 4 which is located between the parallel link mechanism 20.
0, the pressing plate 30 is moved in parallel, and the pressing plate 30 is
And a link spring 50 that presses against the base 11.

The base 10 is integrally formed of plastic such as ABS resin, the support wall 12 is vertically erected at the center along the longitudinal direction of the horizontal base 11, and the support wall 13 is longitudinally The base 11 is erected vertically from the left end of the base 11 along the direction. The support wall 13 has a gentle curved surface along the outer shape of the base 11. Support wall 1
2, 13 are provided with projections 14 for engaging the operation lever 40 and the link spring 50, respectively. The right side of the support wall 12 at the center is a binding portion 15 for binding sheets, and two binding grooves 16 are formed in the longitudinal direction.

Receiving holes for supporting the two cranks 21 constituting the parallel link mechanism 20 are formed at predetermined intervals in the two rows of supporting wall portions 12 and 13.
Two cranks 21, 21 are swingably supported.
The cranks 21, 21 protrude in one direction from one side of the arm 22 and protrude from the other side of the arm 22 in the other direction, and a pivot shaft 23 pivotally supported by the support walls 12, 13 of the base 10. Axis 2
3 and a holding shaft 24 in a step parallel state.
Are inserted into and supported by the receiving holes of the support walls 12 and 13 in two rows. A small diameter holding groove 25 for holding the pressing plate 30 is formed in the holding shaft 24 of the cranks 21, 21. Note that the support wall portions 12 and 13 may be formed of two rows of planar walls in a parallel state.

Here, the escape prevention mechanism of the cranks 21, 21 will be described with reference to FIG. Crank 21,
As described above, reference numeral 21 is swingably supported by the support walls 12 and 13 of the base 10. On the upper surface of the base 10, there are formed recesses 17 and 17 in which a crank can be engaged. . With respect to the center line connecting the pivot shaft 23 and the holding shaft 24, the distance between the center line and one long side 26 is small, and the distance d2 between the center line and the other long side 27 is large. Have been. That is, the shape is asymmetric with respect to the center line. Pivot shaft 23 of cranks 21, 21
The side end has an arc portion 28 centered on the pivot 23 and an inclined portion 29 continuing to the arc portion and continuing to one long side 26.
Is formed. The inclined portion 29 is about 12 with respect to the long side 26.
It is inclined to 0 degrees.

The arc portion 28 and the other long side 27
Are set so that they can be inserted into the locking grooves 17, 17 of the base body 10. At the time of insertion, the cranks 21, 21 cannot move in the axial direction of the pivot shaft 23, and do not fall off in the normal swing range. It is configured as follows. Therefore, FIG.
As shown in (b), the inclined portion 29 of the crank 21 is
When the crank 21 is in a parallel state with the base 10 as shown by a two-dot chain line, the crank 21 has escaped from the locking groove 17 so that it can move in the axial direction and It can be removed from the base 10.

The pressing plate 30 is formed of plastic,
As shown in FIG. 4, the holding shafts 24, 2 of the cranks 21, 21 are provided.
The receiving portions 31, 31 with which the engaging portions 4 are engaged are formed at the same intervals as the receiving holes of the crank. The receiving portions 31, 31 are engaged with the holding grooves 25 of the holding shaft 24 of the crank to prevent movement in the axial direction and prevent falling off. And a protrusion 33 for supporting the pressing plate 30 so that the pressing plate 30 can be inclined with respect to the pressing plate 30. The upper surface of the pressing plate 30 is provided with a die hole for forming the locking projection 32 and the projection 33 by injection molding. On the back surface of the pressing plate 30, two
The protrusions 34 and 35 are provided in parallel to each other, and
Corresponds to the binding grooves 16, 16 recessed in the binding portion 15. A guide hole 36 with which the link spring 50 is engaged is formed in the middle of the receiving portions 31, 31.

The operating lever 40 is swingably supported by two rows of support walls 12 and 13 of the base 10 and, in this example, is supported by the outer periphery of one crank 21 of the parallel link mechanism 20. . The operating lever 40 is made of plastic, has a substantially T-shaped cross section, and has a notch 41 on the vertical wall to avoid interference with the link spring 50 when the operating lever 40 swings, and a crank pivot shaft. A notch 42 avoiding 23 and one end of the link spring 50 are engaged to form a movable guide groove 43. The guide groove 43 has a straight portion 44, an inclined portion 45, and a lock portion 46 formed from the outer peripheral side. At the end of the operation lever 40 opposite to the fulcrum side, a pressing portion 47 for pressing with a finger is provided. Since the operation lever 40 has a substantially T-shaped cross section, the strength is increased.

The link spring 50 is made of a spring material such as stainless steel or spring steel, and has a spring portion 51 around which the spring material is wound.
And an operating lever 40 extending from one end of the spring portion.
Interlocking end 52 connected to the guide groove 43 of the
And a pressing end portion 53 formed to extend from the other end of the pressing plate 30 and engaged with a guide hole 36 formed in a central portion of the pressing plate 30.
As shown in FIG. 2 (b), the pressing end 53 has a distal end bent downward, in other words, bent in the direction of the base 10. For this reason, the pressing plate 30 is moved in parallel by the operation lever 40, and is configured such that, when the pressing plate 30 comes into contact with the base 11 of the base 10, the leading end first comes into contact with the base in an inclined state. The shape of the guide hole 36 of the pressing plate 30 is an elliptical hole formed by an arc having a diameter larger than the outer diameter of the link spring 50.
The zero pressing end 53 is configured to be movable in the guide hole 36 in the longitudinal direction.

The link spring 50 has a spring portion 51 formed of a base 10.
These are supported by the two rows of support wall portions 12 and 13, and as shown in FIG. 6, the lock shaft 55 is inserted into the receiving hole of the support wall portion from the side. The lock shaft 55 has two lock claws 56, 56,
The base 10 is fixed to the base 10 by engaging with a lock recess (not shown) formed on the lower surface of the base 10. Lock shaft 5
5 is also made of plastic. As described above, all components of the binding device 1 except the link spring 50 are formed of plastic.

The binding device 1 is configured as described above, and is fixed to, for example, a mount of a file. That is, two mounting holes 18 are formed on the lower surface of the base 10 so as to correspond to the support wall portion 12 near the center of the base 10 as shown in FIG. 2, and as shown in FIGS. File mount 60
Is attached to the lower surface of the binding device 1, and two mounting screws 19, 19 having a cross hole corresponding to, for example, a Phillips screwdriver are inserted into the mounting holes 18, 18 and screwed into the mount 60.
Can be fixed to the binding device 1. Thus, the mount 60
Since the support wall portion 13 of the binding device 1 is fixed to the fixing device 1, it can be fixed firmly. When the thickness of the support wall is small, a thick portion having a semi-cylindrical shape may be formed as shown in the figure, and the mounting holes 18 may be formed corresponding to the thick portion. The binding device 1 is not limited to the mount 60, but may be fixed to a board or the like and used like a binder. In addition, mounting screws 19
Alternatively, the binding device may be configured to fix the binding device to the mount using a detachable attachment such as a press-fit pin or a snap fit pin.

The binding device 1 according to the present invention is configured as described above, and the operation will be described below with reference to FIG. FIG.
FIG. 4 is an explanatory diagram of an operation of binding sheets to the binding device described above. When binding sheets 65 such as documents, the binding device 1 is set in a state where the operation lever 40 is lifted as shown in FIG. 1, and the sheets are placed on the binding portion 15 of the base 10. When the operation lever 40 is swung to the front side, the interlocking end 52 of the link spring 50 moves upward in the guide groove 43 and passes through the lock portion 46, and the link spring 50 rotates around the spring portion 51. The pressing plate 30 moves together with the cranks 21 and 21 of the parallel link mechanism 20.
Is translated. Then, as shown in FIG. 8A, the pressing plate 30 contacts the upper surface of the paper sheet 65, and the pressing plate 30 first contacts the paper sheet 65 because the front end of the pressing plate 30 is inclined downward. In this state, the paper sheets 65 are not yet bound and can move freely.

When the operating lever 40 is pushed in against the link spring 50, the pressing plate 30 presses the paper sheets 65 and the pressing plate 3
The leading end of the zero and the protrusion 35 on the leading end side lightly hold the paper sheet 65. When the operating lever 40 is further pushed in, the spring portion 51 at the center of the link spring is twisted, and the pressing plate 30 strongly presses the paper sheets 65, and the pressing plate 30 is horizontally moved at the receiving portions 31, 31 of the cranks 21, 21. State and two projections 3
4 and 35 press the binding grooves 16 and 16 of the base 10 to firmly hold and bind the sheets 65. The operation lever 40 is configured such that the portion of the interlocking end 52 of the link spring 50 is
As shown in (b), the engagement is made with the engagement projections 14 of the base body 10 to be locked.

When the papers 65 are removed, when the pressing portion 47 of the operation lever 40 is moved rightward from the state shown in FIG. 8B, the interlocking end 52 of the link spring comes off the engagement projection 14, The operation lever 40 is lifted upward by the spring force of the link spring 50. As a result, the pressing plate 30 is
Is released, and the paper sheet 65 is in a free state and can be freely removed. By swinging the operation lever 40 further upward, the interlocking end 52 of the link spring 50 is
Is engaged with the lock portion 46 of the guide groove 43, and the operation lever 40
Are kept vertical. As described above, according to the binding device 1 according to the present invention, the paper sheets 65 can be bound very easily and can be easily removed. Further, since the paper sheets 65 can be moved in a temporarily fixed state, the paper sheets 65 can be easily bound at a predetermined position. The parallel link mechanism 20 has strong support because the pivot shaft 23 of the crank 21 is supported by the two rows of support walls 12 and 13, and the operation lever 40 is also supported by the support walls 12 and 13. Therefore, the support is strong, and the paper sheets 65 can be stably bound for a long period of time.

When assembling the binding device 1 according to the present invention,
The operation lever 40 is inserted into a predetermined position between the support walls 12 and 13 of the base body 10, and the crank 21 is inserted into the receiving holes of the support walls 12 and 13 in a state as shown in FIG. 40 is swingably supported. Then, the other crank 21 is similarly inserted into the receiving holes of the support walls 12 and 13.
Next, the interlocking end portion 52 of the link spring 50 is engaged with the guide groove 43 to position the spring portion 51 at a predetermined position between the cranks 21, 21, and the lock shaft 55 from the side of the support wall portion 13.
To support the spring portion 51. Thereafter, the pressing end 53 of the link spring 50 is inserted into the guide hole 36 of the pressing plate 30, and the cranks 21, 2 are inserted into the receiving portions 31, 31 of the pressing plate 30.
The first holding shafts 24, 24 are pushed in correspondingly. As a result, the locking projection 32 of the receiving portion is
And the projection 33 holds the holding shaft 24, and the two are connected by snap fitting.

When the binding device 1 is to be discarded, for example, when the lock shaft 55 is moved in the direction opposite to the insertion direction, the lock claw 5 is moved.
6 and 56 can be easily detached from the lock recesses of the base 10, and the lock shaft 55 can be easily removed. In the link spring 50, the spring portion 51 is free and can be removed from the base 10,
The pressing end 53 is removed from the guide hole 36 of the pressing plate 30, and the interlocking end 52 is removed from the guide groove 43 of the operation lever 40. Then, when the pressing plate 30 is strongly lifted upward with respect to the cranks 21, the pressing plate 3 is moved from the holding shaft 24 of the crank 21.
The receiving portion 31 of 0 can be easily removed.

In this manner, the binding device 1 can be easily disassembled and disassembled into the link spring 50 as a metal part and the base body 10, the cranks 21, 21, the pressing plate 30, and the operation lever 40 as plastic parts. can do.
When removing the binding device 1 from the mount 60 of the file, the binding device 1 and the mount 60 can be easily separated by removing the mounting screws 19, 19 with a Phillips screwdriver.

[0027]

As described above, according to the present invention,
The press plate is supported on the two rows of support walls of the base via a parallel link mechanism so as to be able to move in parallel, and the operation lever is swingably supported on the two rows of support walls of the base. Leaves can be stably bound for a long time. Since the end of the pressing end of the link spring is bent downward, the link spring is easily moved when binding paper sheets and can be bound at a predetermined position. In addition, the base is formed with two rows of support walls, and the crank is supported by the two rows of support walls and has high strength. Therefore, the crank can be formed of plastic, and can be easily manufactured and assembled. Furthermore, the binding device according to the present invention and the file including the binding device can be easily disassembled, so that, for example, a plastic component and a metal component can be easily separated at the time of disposal, so that disposal is facilitated.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an embodiment of a binding device according to the present invention in a state where an operation lever is lifted.

2A is a plan view of FIG. 1, and FIG. 2B is a plan view of FIG.
FIG.

FIG. 3 is a right side view of FIG. 1;

4A is an enlarged cross-sectional view of a main part along line BB in FIG. 2, FIG. 4B is a bottom view of the pressing plate, and FIG.
Enlarged arrow view

FIGS. 5A and 5B show a mechanism for preventing the lever from falling off, wherein FIG. 5A is a partially broken side view in a state in which the lever cannot escape, and FIG.

FIG. 6 is an exploded perspective view of a main part showing a state of attachment of a link spring.

FIG. 7 is a schematic perspective view showing a state in which the binding device according to the present invention is fixed to a file.

8A and 8B are explanatory diagrams illustrating an operation of binding a sheet to the binding device according to the present invention, wherein FIG. 8A illustrates a state in which a pressing plate is in contact with the sheet, and FIG. 8B illustrates a state in which the sheet is pressed. Indicates a closed state.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 binding device 10 base 11 base 12, 13 support wall 14 engagement protrusion 15 binding portion 16 binding groove 17 locking groove 18 mounting hole 19 mounting screw 20 parallel link mechanism 21 crank 22 arm portion 23 pivot shaft 24 holding shaft 25 Holding groove 26, 27 Long side 28 Arc portion 29 Inclined portion 30 Press plate 31 Receiving portion 32 Locking protrusion 33 Projection 34, 35 Projection 36 Guide hole 40 Operating lever 41, 42 Notch 43 Guide groove 44 Linear portion 45 Inclined Part 46 Locking part 47 Pressing part 50 Link spring 51 Spring part 52 Interlocking end 53 Pressing end 55 Lock shaft 56 Lock claw 60 Backing paper 65 Paper sheets

Continuation of front page (72) Inventor Akihiro Iwashita 2-10-18 Higashikanda, Chiyoda-ku, Tokyo F-term in King Gym Co., Ltd. (reference) 2C017 TA18

Claims (6)

[Claims] 1. A parallel link mechanism having a horizontal base, a base on which two rows of support walls are erected along the longitudinal direction from the base, and a pair of cranks on the two rows of support walls of the base. A pressing plate supported so as to be able to move in parallel through the base member, and an operation lever supported swingably on two rows of support walls of the base member, and the parallel link mechanism. And a link spring that moves the pressing plate in parallel in conjunction with the operation lever and presses the pressing plate against the base of the base at a position where the operation lever is pressed down. The link spring includes a spring portion held by the base, an interlocking end portion extending from one end of the spring portion and connected to the operating lever, and a link plate extending from the other end of the spring portion to the pressing plate. The binding device according to claim 1, further comprising a pressing end portion to be engaged, wherein the pressing end portion has a distal end bent toward a base portion of the base. 3. A pair of cranks of the parallel link mechanism project in one direction from one side of the arm and are pivotally supported by a support wall of the base, and in the other direction from the other side of the arm. 3. The binding device according to claim 1, further comprising a holding shaft protruding from the pivot shaft and being parallel to the step, and being prevented from falling off in a normal swing range of the crank. 4. The binding device according to claim 1, wherein the base, the operation lever, the pressing plate, and the crank of the parallel link mechanism are formed of plastic. 5. The binding device according to claim 1, wherein a mounting hole for inserting a mounting device for fixing the binding device to the mount of the file is formed in the support wall portion near the center of the base. Utensils. 6. A file, wherein the binding device according to claim 1 is fixed to a mount with a detachable attachment.