JP3358515B2 - Binding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding device, and more particularly, to a double-sided binding device in which a pair of left and right binding plates can be detachably attached to a base.

[0002]

2. Description of the Related Art Conventionally, binders having a binding device on the inner surface side of a spine or a back cover are commercially available. The binding device used for the binders includes a single-opening type in which one binding plate is detachable from a shaft pin supported by the base, and a pair of binding plates via a shaft pin on both sides of the base. There are double-sided binding devices that can be disengaged.

As a double-sided binding device, for example,
It is disclosed in JP-A-8-72457. The binding device includes a base fixed to the spine, a plurality of locking portions formed on both sides of the base, and a predetermined space fixed between the base and the upper surface of the base. A case, a pair of binding plates provided with hinge portions that are detachable from the locking portions of the base, and mutual engagement between the locking portions and the hinge portions accommodated in the space of the base and the case; And an operating member capable of canceling the operation. According to this binding device, since the mutual engagement between each binding plate and the base can be arbitrarily released, there is an advantage that the addition and removal of documents can be efficiently performed.

[0004]

However, in the binding device disclosed in Japanese Patent Application Laid-Open No. Hei 8-72457, the engagement between the locking portion on the base side and the hinge portion on the binding plate is performed. There is a disadvantage that the structure becomes extremely complicated.
In addition, a case is also an essential component for forming a space for mounting the operation member, and assembling becomes complicated due to an increase in the number of components, which is one of the causes of an increase in product cost.

[0005]

SUMMARY OF THE INVENTION The present invention has been devised in view of such inconvenience, and an object thereof is to provide an extremely simple structure for engaging a base with a binding plate. An object of the present invention is to provide a binding device that can be easily assembled by reducing the number of parts and can greatly reduce the product cost.

[0006]

In order to achieve the above object, a binding device according to the present invention comprises a pair of shaft pins supported on both sides of a base, and an engagement in which a lower end side thereof can be disengaged from the shaft pin. A pair of binding plates having a portion, and a binding rod which is located between the relative surfaces of these binding plates and is fitted to each other,
An operation member for partially holding the shaft pin is relatively arranged in both side regions of the base, and the operation member is provided so as to be displaceable in a direction orthogonal to an axial direction of the shaft pin, and the operation member is provided on the base. The engagement portion of the binding plate is provided so as to be detachable from the shaft pin by being pushed in. According to such a configuration, when the operating member is pushed in, the shaft pin is partially displaced so as to bend toward the base, and the displacement causes the engagement portion provided on the lower end side of the binding plate to engage with the shaft pin. Will be canceled. Therefore, the engagement structure can be made extremely simple.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Both sides of a base according to the present invention have an upper surface and a lower surface formed by being bent from above to below, and the operation is performed by partially cutting out the bent end region. A configuration is employed in which a member is provided with an accommodating portion that can be positioned. With this configuration, it is possible to eliminate the necessity of providing a case or a cover on the upper surface side of the base to form a space for disposing the operation member, and to slightly change the shape of the existing structural parts to reduce the number of parts. Therefore, it is possible to achieve easy assembly.

The operating member includes a holding portion through which the shaft pin penetrates and holds the shaft pin, a leaf spring piece connected to the inside of the holding portion and branching into two branches, and a substantially leaf spring piece. A stopper claw erected upward from a central portion.Each tip of the leaf spring piece is provided so as to be able to engage with a protrusion formed on a lower surface portion of the base, while the stopper claw is always While being provided so as to be able to engage with a hole formed in the upper surface of the base, when the operating member is pressed, the operating member is escaped from the hole to allow displacement of the leaf spring. In such a configuration, the leaf spring piece is displaced by the pushing of the operation member, and the stopper claw escapes from the hole, and the stopper claw is elastically restored again by the release of the pushing force and engages with the hole. When the stopper pawl is engaged with the hole, the shaft pin returns to the initial axis position. Here, if the engaging portion of the binding plate is provided with a curved surface capable of displacing the shaft pin inward, the binding plate disengaged from the shaft pin is re-engaged with the shaft pin. Then, the engaging portion of the binding plate may be pushed into the shaft pin from above, whereby the shaft pin is temporarily displaced in the axial direction, so that the binding plate can be remounted with one touch.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the binding device according to the present invention will be described below with reference to the drawings. In this specification, “left and right” are used with reference to the short width direction of the spine shown in FIG. 1 and “up and down” are used with reference to the longitudinal direction of the spine unless otherwise specified. Can be

FIG. 1 is a schematic perspective view of a binding device according to this embodiment. In this figure, the binding device 10 is
A base 13 arranged on the inner surface of a spine 11 constituting a part of a binder, a base fixing device 14 for fixing the base 13 to the spine 11, and a pair of operations arranged on both right and left sides of the base 13 The member 15 and the base 13
And a pair of left and right binding plates 20, each of which is supported on the left and right sides thereof and a part of which is held by the operation member 15, and a lower end side of which is detachably provided on the shaft pins 17. 21 and binding rods 23 and 24 made of pipes fixed at two positions on the relative surfaces of the binding plates 20 and 21 and fitted axially in a telescopic relationship with each other.

As shown in FIGS. 2 to 4, the base 13 has a pair of upper and lower fixing surfaces 26, 26 fixed to two upper and lower positions of the spine 11, and an inclined portion between the fixing surfaces 26. An intermediate portion 27 is provided continuously through a portion 26A. On the left and right sides of each of the fixed surface portions 26, short tubular bearing portions 29 for inserting and supporting the shaft pin 17 are respectively provided in series. In the fixed surface portion 26, rectangular holes 30, 30 are respectively formed at two positions on the left and right near the intermediate portion 27, and the lower surface along the formation edge of the hole 30 is indicated by a dotted line in FIG. 3. As shown in the figure, positioning protrusions 33 each having a substantially L shape when viewed from the upper surface side are formed. As shown in FIG. 4 (B), at the positions near the upper and lower edges of the fixed surface portion 26, there are provided bent pieces 35 which are partially cut and raised from the fixed surface portion 26 and bent outward. Bending piece 3
A cushion material 36 made of rubber or the like is provided between
Is sandwiched.

As shown in FIG. 2 and FIG. 4A, the intermediate portion 27 has an upper surface portion 27A and a lower surface portion 27B formed by bending the left and right sides of the upper surface portion 27A by bending them to the back side. The bent end region is cut out to form the accommodating portion 37 of the operation member 15. In FIG. 4A, bearing portions 38 through which the shaft pins 17 pass are formed on both left and right sides of the housing portion 37. Here, in the lower surface portion 27B, the gap size is set to be larger in the inner region than the upper surface portion 27A via the step portion 27C, and the inner front end portion of the lower surface portion 27B faces the upper surface portion 27A. The formed projection 39 is formed. In the upper surface portion 27A, substantially rectangular holes 40 are formed at positions adjacent to the accommodation portions 37, respectively.

The base fixture 14 is shown in FIGS.
As shown in FIG. 2, the hook member 43 and the rotating member 44 are combined. Hook member 43
Is a pair of bent portions 45 having a substantially L-shape in side view, an upper flat portion 46 connected to the upper end in FIG. 5 of the bent portion 45, and bent downward from the distal end side of the upper flat portion 46. And a lower flat portion 48 connected to the lower ends of the bent portions 47 and extending below the upper flat portion 46 and having their leading ends connected to each other. I have.

As shown in FIG. 9, the bent portion 45 is engaged with a hole 11A of the spine 11, and is exposed to the outside of the spine 11, and is substantially perpendicular to the sandwich surface 45A. And an upright surface portion 45B extending upward and extending in the hole 11A. Here, the holding surface portion 45A and the upright surface portion 45B are provided in such a shape that their outer surfaces are slightly curved outward. As shown in FIGS. 5 and 6, a protrusion 45 </ b> C that functions as a stopper when combined with the rotating member 44 is formed on the inner end portion of the upright surface 45 </ b> B. A cutout hole 50 is formed in the upper flat portion 46 at a substantially central portion.

As shown in FIGS. 7 and 8, the rotation member 44 is provided in a shape capable of receiving the upper flat portion 46 and the lower flat portion 48 of the hook member 43 inward and covering them. ing. Specifically, an upper cover surface portion 52 having a substantially flat plate shape, a pair of side wall portions 53 provided downward from left and right ends of the upper cover surface portion 52 in FIG.
3 and a rear end wall 54 connected continuously between the front ends in FIG. At the corners between the upper cover surface 52 and the rear end wall 54, two notches 56 are formed on the left and right in FIG. 8, and the bent portion 45 of the hook member 43 is exposed to the outside through these notches 56. It is possible to assemble so as to be at the position (see FIG. 1). At this time, the rear end wall 54 has a shape in which the outer surfaces on both sides are slightly bulged, so that the rear end wall 54 can be substantially in close contact with the inner surface of the upright surface 45B of the bent portion 45.

As shown in FIGS. 10 and 11, the operation member 15 has a curved operation surface portion 58 exposed to the outside when it is disposed in the housing portion 37 of the base 13, and an inside of the operation surface portion 58. A holding portion 59 that is provided in series and holds the shaft pin 17 is connected via a pair of extension pieces 60 connected to the holding portion 59, and is bifurcated so as to form a bow when viewed from above in FIG. A leaf spring piece 62 that branches,
A bent engagement piece 64 formed at the tip of the leaf spring piece 62
From the upper end of the substantially central portion of the leaf spring piece 62 to the operation surface portion 58
And a stopper claw 66 directed upward on the side.

As shown in FIG. 11, the holding portion 59 includes an upright piece 69 extending substantially orthogonally upward from the tip of a horizontal piece 67 connected to the lower end of the operation surface 58, and this upright piece 69. And a stepped curved surface 73 located between the upper end of the operation surface 58 and the extension piece 60. The shaft pin 17 can be inserted into the inner region surrounded by and surrounded by the shaft pin 17.

The stopper pawl 66 has a position shown by a two-dot chain line in FIG.
7, the upper surface 27 of the base 13
On the back side of A, a spring property is provided which is displaced to the position shown by the solid line in the same figure to return to the initial position. The stopper claws 66 are always provided with holes 4 formed in the upper surface portion 27A.
0 and can be engaged with it, and can be escaped from the hole 40 when the operation surface portion 58 is pushed in from the outside to the inside. At this time, the leaf spring piece 62 provided in an arc shape has a configuration in which the bending engagement piece 64 provided at the tip thereof is engaged with the projection 39 provided on the lower surface 27 of the base 13. Is displaced to a linear shape to allow the operation surface portion 58 to be pushed. The shaft pin 17 is provided with a throttle portion 17A at a substantially central portion in the axial direction, and the throttle portion 17A is located on the pin receiving surface portion 70 of the holding portion 59, and a step portion forming the throttle portion 17A is provided. Engagement with both end edges of the pin receiving surface portion 70 restricts the axial movement of the pin shaft 17.

The binding plates 20 and 21 are shown in FIGS.
As shown in FIG. 3, they are provided substantially symmetrically with each other. Therefore, here, only the binding plate 20 on one side will be described, and the description of the same or equivalent components will be omitted using the same reference numerals.

The binding plate 20 is formed of an elongated strip-shaped main body piece 8.
0, downwardly protruding pieces 82, 82 which are connected to lower ends of both ends of the main body piece 80 in the longitudinal direction and ride on the upper part of the outer peripheral surface of the shaft pin 17, and are provided inside positions between these upper protruding pieces 82. A lower protruding piece 83 as an engaging portion, and a horizontal protruding piece 84 provided at a position substantially at the same height as the base position of the upper protruding piece 82 in the lower central region of the main body piece 80. ing. A gap C is formed between the lower end of the upper projecting piece 82 and the tip of the lower projecting piece 83, as shown in FIG. The pin 17 can be removed. Here, as shown in FIG. 11, the outer peripheral surface of the lower end of the lower projecting piece 83 has a curved shape in a side view, and the lower projecting piece 83 is lowered from above when disengaged from the shaft pin 17. When this is done, the shaft pin 17 enters the upper surface side of the lower projecting piece 83 along the curved outer peripheral surface while displacing the axial position.

In the binding plates 20 and 21, annular bases 85 for fixing the binding rods 23 and 24 are formed at two upper positions of each main body piece 80, and the binding plates 20 on the left side in FIG. Small diameter binding rod 23
Is fixed, and the large-diameter binding rod 24 is fixed to the annular base 85 provided on the right binding plate 21.

Next, a method for fixing the binding device 10 according to the present embodiment to the spine 11 and an overall assembling method will be described with reference to FIGS. 9 and 14. FIG.

First, when fixing the base 13 on the spine 11, the positioning projection 33 protruding downward from the fixing surface 26 of the base 13 is inserted into the hole 11 A of the spine 11.
Within.

Next, the hook member 43 and the rotating member 4
What is necessary is just to fix the base 13 using the base fixture 14 comprised combining 4 with. That is, as shown in FIG. 9, the hook member 43 is set so that the holding surface portion 45 </ b> A of the hook member 43 is exposed to the front side of the spine 11. Then, the holding surface portion 45A is moved in the direction indicated by the arrow a in FIG. 9 so that the outer surface portion of the spine 11 is located on the inner surface side of the holding surface portion 45A.
4 is rotated in the direction indicated by the arrow b to rotate the upper cover surface portion 52 to a position where the upper cover surface portion 52 assumes a substantially horizontal posture as indicated by a two-dot chain line. This rotation is performed by the rear end wall 5 of the rotating member 44.
The contact point between the lower end of the rear end wall 54 and the upper surface of the base 13 is used as a fulcrum. When the rotating member 44 assumes a substantially horizontal posture, a clamping force is generated between the lower end of the rear end wall 54 and the clamping surface portion 45A. Thus, the base 13 is fixed to the spine 11. In the state where this fixing is performed, the rotating member 4
As long as no external force is applied to rotate the free end side in the opposite direction, a constant pinching force is maintained, and a protrusion 45 formed on the inner end of the upright surface 45B.
Due to the presence of C, the state where the relative rotation between the hook member 43 and the rotating member 44 is always regulated is maintained.

Around the time when the base 13 is fixed, the base 13 supports the shaft pin 17. Then, while the operation member 15 is disposed in each of the storage portions 37 of the base 13, the operation member 15 is set so that the throttle portion 17 </ b> A of the shaft pin 17 fits in the holding portion 59.

Next, as shown in FIG. 13, when the pair of binding plates 20 and 21 are combined and lowered to the base 13 side from above, the shaft pin 17 is bent by the curved surface of the lower end outer peripheral surface of the lower projecting piece 83. Comes to displace the axis position inward, the shaft pin 17 enters through the gap C between the lower projecting piece 83 and the upper projecting piece 82, and the shaft pin 17 returns to the initial axis position by further descending. It will ride on the lower protruding piece 83, whereby each binding plate 2
The mounting of 0, 21 on the base 13 is completed.

Here, when binding a document (not shown), one of the operation members 15 may be pushed in. By this pushing, the shaft pin 17 displaces the axial position as described above, so that the mutual engagement between the shaft pin 17 and the lower protruding piece 83 is released, whereby the binding plate 20 or 21 is disengaged from the base 13. By moving the binding plates 20 and 21 away from each other, the binding rods 23 and 24 fitted in the axial direction are released from each other. Note that the binding plates 20 and 21 may be simultaneously removed from the base 13 by pressing the two operation members 15 at the same time.

Therefore, according to this embodiment, the attachment and detachment of the base 13 to and from the spine 11 can be performed extremely easily, and the mutual engagement structure between the base 13 and the binding plates 20 and 21 can be simplified. Can be.

The detailed structure of the binding device 10 according to the present invention, for example, the external shapes of the base 13 and the binding plates 20 and 21 are not limited to those of the above-described embodiment. It can be changed as appropriate.

[0030]

As described above, according to the present invention,
By arranging the operation member that holds a part of the shaft pin relatively in the both side regions of the base, disposing the operation member in a direction orthogonal to the axial direction of the shaft pin, and pushing the operation member into the base. Since the engaging portion of the binding plate is provided so as to be detachable from the shaft pin, the engagement between the engaging portion provided on the lower end side of the binding plate and the shaft pin is released by the displacement of the shaft pin when the operating member is pushed in. It is possible to make the engagement structure extremely simple.

Further, since the upper and lower sides are provided by bending the left and right sides of the base and the accommodating portion for the operating member is formed in the bent end region, a case or a cover is provided on the upper surface side of the base to provide the operating member. It is no longer necessary to form a space for disposing the base, and the design of the base can be slightly changed in design to eliminate the necessity of providing separate parts such as a cover, and to facilitate the assembly while reducing the number of parts. .

Further, a stopper claw which constitutes a part of the operation member is normally provided so as to be able to engage with a hole formed in the upper surface of the base, and when the stopper is pushed in, the stopper claw escapes from the hole and is released. Since the displacement of the leaf spring is allowed, the operating member can be stably held in the housing portion, and the initial position where the shaft pin is positioned in a substantially linear direction with the stopper claw engaged with the hole. Therefore, the binding plate can be re-engaged with the shaft pin without having to push the operation member.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing the entire configuration of a binding device according to an embodiment.

FIG. 2 is a schematic perspective view of a base.

FIG. 3 is a plan view of the base.

FIG. 4A is a cross-sectional view taken along the line AA of FIG. 3;
(B) is a right side view of FIG.

FIG. 5 is a schematic perspective view of a hook member constituting the base fixture.

FIG. 6 is a view taken in the direction of arrow B in FIG. 5;

FIG. 7 is a schematic perspective view of a rotating member constituting the base fixture.

FIG. 8 is a view taken in the direction of arrow C in FIG. 7;

FIG. 9 is an explanatory view showing a principle of fixing a base by a base fixing tool.

FIG. 10 is a schematic perspective view of an operation member.

FIG. 11 is a side view of the operation member.

FIG. 12 is a schematic perspective view showing one binding plate.

FIG. 13 is a side view showing a state where a pair of binding plates are combined.

FIG. 14 is an exploded perspective view showing a method of assembling the binding device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 binding device 13 base 15 operating member 17 axis pin 20 binding plate 21 binding plate 23 binding rod 24 binding rod 27A upper surface portion 27B lower surface portion 37 housing portion 39 projection 40 hole 59 holding portion 62 leaf spring piece 66 stopper claw

Claims (3)

(57) [Claims] 1. A pair of shaft pins supported on both sides of a base, a pair of binding plates provided with engagement portions whose lower ends can be disengaged from the shaft pins, and a pair of binding plates located between relative surfaces of the binding plates. And an operating member for partially holding the shaft pin is relatively arranged in both side regions of the base, and the operating member is orthogonal to the axial direction of the shaft pin. The binding member is provided so as to be displaceable in each direction, and the engaging portion of the binding plate is provided so as to be detachable from the shaft pin by mutually pushing the operation members into the base. 2. Both sides of the base have an upper surface and a lower surface formed by being bent downward from above, and the operation member can be positioned by partially notching the bent end region. The binding device according to claim 1, further comprising a housing portion. 3. The operating member includes a holding portion through which the shaft pin penetrates and holds the holding member, a leaf spring piece connected to the inside of the holding portion and branching into two branches, and substantially the leaf spring piece. A stopper claw erected upward from a central portion.Each tip of the leaf spring piece is provided so as to be able to engage with a protrusion formed on a lower surface portion of the base, while the stopper claw is always 3. The plate spring is provided so as to be engageable with a hole formed in an upper surface portion of the base, and escapes from the hole when the operation member is pressed to allow displacement of the leaf spring.
The binding device described.