Double clip

Abstract

To provide a double clip capable of clamping and fastening even a thin document with a large force and reducing a force required for gripping a pair of levers with two fingers when fastening the document.SOLUTION: A double clip 1 comprises: a pair of first bent portions 31, 32 bent at equal intervals from a longitudinal center of a spring material 2; a pair of clamping portions 41, 42 provided on both ends of the spring material to clamp and fasten documents; a pair of levers 51, 52 for opening the pair of clamping portions; a pair of support portions 61, 62 provided on the spring material of the pair of clamping portions to rotate the pair of levers; and a pair of second bent portions 81, 82 provided between the pair of clamping portions and the pair of first bent portions to serve as fulcrums 71 to 74 when the pair of clamping portions are opened by the pair of levers.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a double clip. [Background technology]

[0002] Conventionally, double clips are known, as disclosed in, for example, Patent Document 1 and Patent Document 2. The double clip disclosed in Patent Document 1 includes a pair of bent portions bent at equal intervals from the center of the longitudinal direction of a spring material, a pair of clamping portions provided on both ends of the spring material for clamping and fastening documents or the like, a pair of levers for opening the pair of clamping portions, a pair of support portions provided on the spring material on both sides of the pair of clamping portions for rotating the pair of levers, and a pair of fulcrum portions formed in a convex shape and provided on the spring material between the pair of clamping portions and the pair of bent portions, which serve as a fulcrum when the pair of clamping portions are opened by the pair of levers.

[0003] As shown in FIG. 8, the double clip 10 disclosed in Patent Document 2 (FIG. 4) includes a pair of bent portions 33, 34 bent at equal intervals from the center of the longitudinal direction of the spring material 2, a pair of clamping portions 41, 42 provided on both ends of the spring material 2 for clamping and fastening documents or the like (not shown), a pair of levers 51, 52 for opening the pair of clamping portions 41, 42, a pair of support portions 61, 62 provided on the spring material 2 of the pair of clamping portions 41, 42 for rotating the pair of levers 51, 52, and a pair of fulcrum portions 91, 92 provided on the outer surface of the spring material 2 between the pair of clamping portions 41, 42 and the pair of bent portions 33, 34 and serving as a pair of fulcrums when the pair of clamping portions 41, 42 are opened by the pair of levers 51, 52. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 52-15918 [Patent Document 2] JP 2019-18551 A (Fig. 4) Summary of the Invention [Problem to be solved by the invention]

[0005] In the double clip disclosed in Patent Document 1, when a document or the like is clamped and a pair of clamping parts is opened by grasping a pair of levers with two fingers, the pair of levers abuts against a pair of fulcrum parts and the spring material is bent. Therefore, when the clamping part is opened further, the pair of levers abuts against a pair of bent parts from the pair of fulcrum parts, the fulcrum moves, and there is a problem that the force with which the pair of levers is grasped by the two fingers increases.

[0006] As shown in FIG. 8, the double clip 10 disclosed in Patent Document 2 (FIG. 4) has a pair of fulcrum portions 91, 92 that are bent at three locations on one side (fulcrums 911, 912) and three locations on the other side (fulcrums 921, 922). As a result, when the pair of clamping portions 41, 42 clamp and fasten a document or the like (not shown), the pair of fulcrum portions 91, 92 deform at six locations, resulting in a problem that the force with which the pair of clamping portions 41, 42 clamp and fasten the document or the like (not shown) is reduced.

[0007] In order to solve the above-mentioned problems, the object of the present invention is to provide a double clip that can clamp and fasten even thin documents with a large force between the pair of clamping parts, and can reduce the force required to grip the pair of levers with two fingers when opening the pair of clamping parts.

[0008] In order to solve the above-mentioned problems, the double clip of the present invention described in claim 1 comprises a pair of first folded portions folded at equal intervals from the longitudinal center of a spring material, a pair of clamping portions provided on both ends of the spring material for clamping and fastening documents or the like, a pair of levers for opening the pair of clamping portions, a pair of support portions provided on the spring material on both sides of the pair of clamping portions for rotating the pair of levers, and a pair of second folded portions between the pair of clamping portions and the pair of first folded portions which serve as fulcrums when the pair of clamping portions are opened by the pair of levers.

[0009] In the double clip described in claim 2, at least a portion of the pair of second bent portions on both sides of the center C of the spring material is formed in a curved shape.

[0010] In the double clip described in claim 3, the pair of second bent portions near the fulcrum are formed so that the side closer to the center C of the spring material is closer to the pair of first bent portions and the side farther from the center C of the spring material is closer to the pair of clamping portions, or so that the side farther from the center C of the spring material is closer to the pair of first bent portions and the side closer to the center C of the spring material is closer to the pair of clamping portions.

[0011] According to the present invention, the double clip described in claim 1 has a second folded portion between a pair of clamping portions and a pair of first folded portions, so that the angle of the first folded portions becomes larger, and the force with which thin documents, etc. are clamped and fastened can be increased. Also, when the pair of clamping portions are opened to clamp and fasten documents, etc., the pair of levers do not come into contact with the pair of first folded portions, so the force required to grip the pair of levers with two fingers can be reduced.

[0012] Furthermore, the double clip described in claim 2 is less likely to deform when the pair of clamping portions are opened with the pair of levers, and the angle of the second bent portion can be made large, so that the distance between the pair of tips of the pair of levers in the initial state becomes narrower, making it easier to grasp the tips of the pair of levers with two fingers.

[0013] Furthermore, the double clip described in claim 3 is less likely to deform when the pair of clamping portions are opened with the pair of levers, and the angle of the second bent portion can be made larger, so that the distance between the pair of tips of the pair of levers in the initial state becomes narrower, making it easier to grasp the pair of tips of the pair of levers with two fingers. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a top view showing a configuration of a double clip according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a front view showing the configuration of the double clip in FIG. [Diagram 3] FIG. 2 is a front view showing the operation of the double clip in FIG. [Figure 4]FIG. 2 is an explanatory diagram showing the function of the double clip in FIG. 1 in numerical values. [Diagram 5] FIG. 11 is a top view showing the configuration of a double clip according to a second embodiment of the present invention. [Figure 6] FIG. 11 is a top view showing the configuration of a double clip according to a third embodiment of the present invention. [Figure 7] FIG. 7 is a front view showing the configuration and operation of the double clip in FIGS. 5 and 6. [Figure 8] FIG. 1 is a front view showing the operation of the double clip according to Patent Document 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The same or equivalent components, members, etc. used in the description of Patent Document 1 are given the same part names and symbols, and an exemplary embodiment of the present invention will be described below with reference to the drawings. Parts with parentheses and symbols are assumed to be located in hidden positions when the drawings are viewed from above.

[0016] (First embodiment) A first embodiment of the present invention will be described with reference to the drawings. As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the double clip 1 is composed of a pair of first bent parts 31, 32 bent at equal intervals from the center of the longitudinal direction of a thin-walled spring material 2, a pair of clamping parts 41, 42 provided on both ends of the spring material 2 for clamping and fastening documents (not shown), a pair of levers 51, 52 for opening the pair of clamping parts 41, 42, a pair of support parts 61, 62 provided on the spring material 2 on both sides of the pair of clamping parts 41, 42 for rotating the pair of levers 51, 52, and a pair of second bent parts 81, 82 that become fulcrums 71-74 when the pair of clamping parts 41, 42 is opened by the pair of levers 51, 52 between the pair of clamping parts 41, 42 and the pair of first bent parts 31, 32. Here, α is the angle of the bent portions of the pair of first bent portions 31, 32, β is the angle of the bent portions of the pair of second bent portions 81, 82, and a is the distance between the pair of tips 53, 54 of the pair of levers 51, 52 in the initial state.

[0017] 2, the pair of second folding portions 81, 82 (angle β=less than 180 degrees) are folded, so that the angle α is large, and the force with which the pair of clamping portions 41, 42 clamp and fasten thin documents (not shown) can be increased. Also, since the pair of second folding portions 81, 82 are folded at one location, even if they are pushed by the pair of levers 51, 52 when the pair of clamping portions 41, 42 are opened by the pair of levers 51, 52, the change in angle β can be reduced.

[0018] Furthermore, as shown in FIG. 3, when the pair of tips 53, 54 of the pair of levers 51, 52 are grasped with two fingers (not shown) and brought into contact with the pair of second bent portions 81, 82, even if the pair of clamping portions 41, 42 are opened wide, the pair of second bent portions 81, 82 act to cause the pair of levers 51, 52 to only abut against the fulcrums 71-74 and not against the pair of bent portions 31, 32. Therefore, the force required to grasp the pair of tips 53, 54 of the pair of levers 51, 52 with two fingers (not shown) increases as the angle α increases, but can be made smaller than that of a double clip that does not have a pair of second bent portions 81, 82.

[0019] The reason why the force required to open the pair of clamping portions 41, 42 by the pair of levers 51, 52 is small as shown in FIG. 4 will be described. For convenience of explanation, the side of the double clip 1 is formed as an equilateral triangle (side length=4 / unitless). The broken line indicates a state in which the pair of levers 51, 52 are in contact with the fulcrums 71-74 and open in parallel, without contacting the pair of first bent portions 31, 32. The amount of movement of the pair of tips 53, 54 of the pair of levers 51, 52 is b=2, and the amount of movement of the pair of fulcrums 71-74 is d=1, so that b+d=3. Therefore, the force required to open the pair of clamping portions 41, 42 is 2 / 3 of the force required to open the pair of clamping portions 41, 42 when the pair of bent portions 31, 32 are used as fulcrums, making the force required to open the pair of clamping portions 41, 42 small.

[0020] Comparing the cases where d is 0.5, 1.0, and 1.5, the force required to open the pair of clamping portions 41, 42 is smaller as the fulcrums 71-74 are closer to the pair of clamping portions 41, 42, i.e., 2 / 2.5 when d=0.5, 2 / 3 when d=1.0, and 2 / 3.5 when d=1.5.

[0021] Second embodiment The same or equivalent components and members as those in the first embodiment are designated by the same part names and the same reference numerals, and duplicated descriptions will be omitted as appropriate. The following mainly describes the characteristic features of the second embodiment.

[0022] A second embodiment of the present invention will be described with reference to Fig. 5 and Fig. 7. As shown in Fig. 5, the double clip 1 is formed in a curved shape such that the distance between the pair of clamping portions 41, 42 becomes narrower as the distance from the center C of the spring material 2 increases, so that the pair of second bent portions 81, 82 are less likely to deform due to the force from the levers 51, 52. The pair of second bent portions 81, 82 may also be formed in a curved shape as shown by the imaginary line.

[0023] By being configured as described above, as shown in FIG. 7, when the double clip 1 is used to open the pair of clamping portions 41, 42 with the pair of levers 51, 52, the second bent portions 81, 82 are formed in a curved shape and are therefore less likely to deform, and the angle β of the second bent portions 81, 82 can be made large, so that the distance e between the pair of tips 53, 54 of the pair of levers 51, 52 in the initial state is narrower than the distance a between the pair of tips 53, 54 of the pair of levers 51, 52 in the initial state shown in the first embodiment, making it easier to grasp the pair of tips 53, 54 of the pair of levers 51, 52 with two fingers (not shown).

[0024] Third embodiment The same or equivalent components and members as those in the first embodiment are designated by the same part names and the same reference numerals, and duplicated descriptions will be omitted as appropriate. The following mainly describes the characteristic features of the third embodiment.

[0025] A third embodiment of the present invention will be described with reference to Fig. 6 and Fig. 7. As shown in Fig. 6, in the double clip 1, the pair of second bent portions 81, 82 near the fulcrums 71-74 of the pair of levers 51, 52 are formed in a curved shape such that the side closer to the center C of the spring material 2 is closer to the first bent portions 31, 32 and the side farther from the center C of the spring material 2 is closer to the pair of clamping portions 41, 42 so that the pair of second bent portions 81, 82 are less likely to be deformed by the force from the pair of levers 51, 52. The pair of second bent portions 81, 82 may be formed in a curved shape as shown by an imaginary line.

[0026] By being configured as described above, as shown in FIG. 7, when the pair of second folded portions 81, 82 are used to open the pair of clamping portions 41, 42 with the pair of levers 51, 52, the double clip 1 is less likely to deform than the second embodiment because the curvature of the curve is greater than that of the pair of second folded portions 81, 82 of the second embodiment, and the angle β of the pair of second folded portions 81, 82 can be made larger than that of the second embodiment, so that the distance e between the pair of tips 53, 54 of the pair of levers 51, 52 in the initial state is narrower than the distance e between the pair of tips 53, 54 of the pair of levers 51, 52 in the initial state of the second embodiment, making it easier to grasp the pair of tips 53, 54 of the pair of levers 51, 52 with two fingers (not shown).

[0027] Any modification or application is possible within the scope of the present invention. For example, in the second and third embodiments, the pair of second bent portions 81, 82 do not have to be entirely curved, and may be a combination of straight lines and curved lines. [Explanation of symbols]

[0028] 1 Double Clip 2 Spring material 10 Double clip (Patent Document 2) 31, 32 A pair of first bends 33, 34 Pair of bent parts (Patent Document 2) 41, 42 Pair of clamping parts 51,52 A pair of levers 53, 54 A pair of tips of the pair of levers 51, 52 61, 62 Pair of supports 71~74 Fulcrum 81, 82 A pair of second bends 91, 92 Pair of fulcrums (Patent Document 2) C Center of spring material 2

Claims

1. A double clip comprising: a pair of first bent portions bent at equal intervals from the center of a spring material in the longitudinal direction; a pair of clamping portions provided on both ends of the spring material for clamping and fastening documents or the like; a pair of levers for opening the pair of clamping portions; a pair of support portions provided on the spring material on both sides of the pair of clamping portions for rotating the pair of levers; and a pair of second bent portions between the pair of clamping portions and the pair of first bent portions which serve as fulcrums when the pair of clamping portions are opened by the pair of levers.

2. 2. The double clip according to claim 1, wherein the pair of second bent portions are formed in a curved shape at least partially on both sides of a center C of the spring material.

3. 2. The double clip according to claim 1, wherein the pair of second bent portions near the fulcrum are formed such that a side of the spring material closer to a center C of the spring material is closer to the pair of first bent portions and a side of the spring material farther from the center C of the spring material is closer to the pair of clamping portions, or such that a side of the spring material farther from the center C of the spring material is closer to the pair of first bent portions and a side of the spring material closer to the center C of the spring material is closer to the pair of clamping portions.

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