Ring fitting

Abstract

To provide a ring-shaped tool for detachably holding paper or the like having holes. [Solution] The cross section of the belt-shaped member that forms the ring is flattened with the long side in the inward / outward direction R of the ring and the short side in the axial direction Z, and in the initial state, the ends a are in an open state with their positions in the axial direction Z offset. When the paper is attached, the positions of the two ends a are swapped in the axial direction Z and overlapped, and the ring is closed by elastic pressure that tries to restore it to its initial state. When turning the paper over, the surface direction of the paper and the overlapping contact surface of the ends a are almost perpendicular, reducing the risk of the paper slipping in between the overlapping ends a and falling out. The cross section of the belt-shaped member can also be made thinner because the axial direction Z of the ring is the short side.

Description

[Technical field]

[0001] The present invention relates to a loop for releasably holding perforated papers or other objects. [Background technology]

[0002] The patent document (Patent No. 74401466, hereafter referred to as the "old device") discloses a structure in which a band-shaped member with both free ends is formed into a ring shape, and the inner and outer ends are overlapped in a recess provided in one part. The old device has a simple structure that does not use complex mechanical elements such as an interlocking structure or an axis member, and has the advantage that it can be opened and closed by simply pinching the ring so that it fits into the recess, allowing one-handed operation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7440146 Summary of the Invention [Problem to be solved by the invention]

[0004] In the old design, the band-shaped member was bent in the direction of the weak axis of its cross section to overlap both ends to achieve closure, so when the bound paper was turned over and rotated, the direction of the moving paper surface and the overlapping contact surface of the end could match. Therefore, when the paper was moved significantly and the loop was deformed, the edge of the paper surface could get between the overlapping surfaces of the end, and it was not possible to eliminate the risk of the paper surface falling out.

[0005] In addition, the strong axis direction of the band-shaped cross section overlaps with the axial direction of the ring, which is a factor preventing the ring from being made thinner in the axial direction.

[0006] In order to achieve the two goals mentioned above of reducing the risk of paper falling out (especially when turning the pages) and improving storage ease by making the device thinner, the purpose of this invention is to provide a ring-shaped device with an overlapping structure that differs from previous designs. [Means for solving the problem]

[0007] The annular device of the present invention has the following configuration in terms of the cross section and overlapping manner of the belt-shaped member. 1) Cross-sectional shape of the belt-shaped member: The cross-sectional shape b of the belt-shaped member is a rectangle with the long side in the inward / outward direction R of the ring and the short side in the axial direction Z of the ring. (See Figures 3 and 4.) 2) Overlapping direction of the ends: In the initial state, the ends a are offset from each other in the axial direction Z of the ring, and when in use, the ends are deformed to swap their positional relationship in the axial direction Z and overlap each other, realizing closure by elastic pressure that tries to return to the initial state (see Figures 1 and 2). Effect of the Invention

[0008] With the above configuration, the paper surface e that moves during the paper turning operation and the direction of the overlapping surface with which the end a comes into contact are perpendicular to each other, so the end of the paper surface e is less likely to get into the gap in the overlapping part of the end a of the ring, effectively preventing it from falling out (see Figure 4).

[0009] In addition, the thickness of the ring in the axial direction Z, which was necessary in the previous design, can be reduced, making it possible to make the device thinner and improving storage ease.

[0010] Furthermore, since the simple pressing structure using the elasticity of the belt-shaped member can be maintained, as in the previous invention, there is no need to use both hands to open and close the paper, and it is easy to attach and remove paper. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view of an embodiment in an initial state; [Diagram 2] FIG. 1 is a perspective view of an embodiment in a closed state; [Diagram 3] 1 is a cross-sectional view of an example embodiment in an initial state; [Figure 4] 1 is a cross-sectional view of an embodiment in a closed state with the pages bound together; [Diagram 5] Three-view diagram of the initial state of the embodiment DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] An embodiment example will be described below.

[0013] Regarding the material: The material in the embodiment is assumed to be plastic.

[0014] Regarding the size of the cross section b. In the embodiment, the size of the cross section b of the belt-shaped member is as follows: 1) At the end a, the diameter is approximately 0.7 mm in the axial direction Z of the ring, and approximately 3.5 mm in the inward / outward direction R of the ring. 2) In other parts, about 1.4 mm in the axial direction of the ring (Z direction) and about 3.5 mm in the inward / outward direction (R direction) of the ring As a result, in a closed state where the ends a overlap, the cross-sectional size of the belt-shaped member becomes uniform over the entire circumference of the ring, improving storage capacity. (See Figures 3, 4, and 5)

[0015] Regarding the details of the overlapping part of the ends a, chamfer d is applied to the part where the size of the cross section b changes. This makes it easier to insert paper and also has the effect of visually indicating the location and encouraging the action. (See Figures 1 and 2)

[0016] Regarding the shape of the belt-shaped member, in the embodiment, the belt-shaped member has a shape in which the inner side of the ring in the inward / outward direction R of the cross section b is aligned along an imaginary line that connects two semicircular arc lines d with a radius of about 7 mm, facing each other at a center distance of about 12 mm. This makes it easy to staple and open papers that have been punched with a standard hole punching machine currently in circulation, or to rotate and turn the pages. (See Figure 5) EXAMPLES

[0017] The present invention can be made of any material and size as long as it has sufficient elasticity, strength and durability, and the surface can be colored. [Explanation of symbols]

[0018] (a) End (b) Cross section (c) Semicircular arc line (d) Chamfered part (e) Paper size (f) Punch holes in the paper (R) Inner / outer ring direction (Z) Ring axis direction

Claims

[Claim 1] A ring-shaped device in which two free ends are formed into a ring shape and passed through a punched hole in paper or the like to detachably hold an object, The cross-sectional shape of the belt-shaped member is a flat rectangular shape with a long side extending in the inward and outward direction of the ring and a short side extending in the axial direction of the ring, In an initial state, the end of the belt-shaped member is misaligned in the axial direction of the ring, When in use, the rings at the ends are overlapped by swapping their axial positions. It forms a closed loop by elastic pressure that tries to return to its initial state.

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