JP2005238549A - Clip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clip, the tightly fastening force of an opening part of which is increased by a method wherein the distance between a fulcrum and a point of action of force is made longer or the repulsive force of a spring is made higher by making the bent angle larger by providing a knotch at a U- or V-bent part. <P>SOLUTION: This clip comprises pinching members (21) and (22) opposing to each other, a connecting shaft part (35) between the pinching members, a U- or V-spring (4) provided along the pinching members and the connecting shaft part and the anti-falling off means of the spring. In order to make the repulsive force of the spring higher, an outward projecting small projection (42) is provided at at least one terminal of the spring (4). Alternatively, the notch (44) is provided inside near the U- or V-bent part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a clip that sandwiches an object between two clamping members. In particular, the present invention relates to a clip using a U-shaped or V-shaped integrally molded product as a spring. This clip can be widely used as a paper presser for office work, a fixing tool for laundry, an engaging tool for a strap end portion, and the like.

As a clip using a U-shaped or V-shaped integrally molded product as a spring, for example, an invention as described in Patent Document 1 below is known. The spring of this Patent Document 1 “is formed of a synthetic resin material such as elastically deformable polyethylene or urethane, or a rubber material, and bends a slightly thick strip into a“ く ”shape in a side view”. It becomes.
JP 2003-74522 A

  As shown in attached FIG. 6, the spring used in the conventional clip is a slightly thick strip that is bent into a U-shape or a V-shape as viewed from the side. Although it is in the state (a) in the natural state, when the two clamping members B, B are grasped with the fingers, the open state in (b) is obtained. As is well known in mechanics, the force applied and the force generated is inversely proportional to the distance from the fulcrum to the line of action. In this prior art structure, the relationship between the fulcrum C, the force point D, and the priority point E is as shown in FIG. 6C, and the distance between the fulcrum C and the force point D is relatively short. Therefore, the repulsive force of the spring is weak. In addition, there is a drawback that it is easy to break near the U-shaped or V-shaped curved portion.

  An object of the present invention is to provide a clip in which the repulsive force of a spring is increased and the tightening force of an opening is increased by increasing the distance between a fulcrum and a force point.

  Also, a second object of the present invention is to provide a clip in which a bending angle is increased by providing a notch in a U-shaped or V-shaped curved portion, the repulsive force of the spring is increased, and the tightening force of the opening is increased. Is to provide.

  The invention according to claim 1 is a sandwiching member facing each other, a connecting shaft portion between the sandwiching members, a U-shaped or V-shaped spring provided along the sandwiching member and the connecting shaft portion, and dropping of the spring The clip comprising the preventing means is characterized in that at least one end of the spring is provided with a small protrusion directed outward.

  According to a second aspect of the present invention, there are provided a sandwiching member facing each other, a connecting shaft portion between the sandwiching members, a U-shaped or V-shaped spring provided along the sandwiching member and the connecting shaft portion, and dropping of the spring. The clip comprising the prevention means is characterized in that a notch is provided inside the vicinity of the U-shaped or V-shaped curved portion to increase the bending angle.

  According to the first aspect of the present invention, the small protrusions directed toward the outside provided at at least one of the ends of the spring serve as a power point. Therefore, the power point and the point are very close or at the same position and are farthest from the fulcrum. Therefore, the clip of the present invention increases the repulsive force of the spring, so that the tightening force of the opening increases (see [0021] for details).

  According to the invention of claim 2, the notch is provided inside the vicinity of the U-shaped or V-shaped curved portion. This notch increases the bending angle over that of the prior art. Nevertheless, since the distance between the end portions of the holding member is not different from that in the prior art, the repulsive force of the spring is improved (refer to [0022] for details. Note that [0022] is compared with Example 1). However, Example 1 is also the same as the prior art with respect to the bending angle.)

  The opposing clamping members are often elongated plate-like and can be made of synthetic resin or metal. In order to support the connecting shaft portion described below, it is preferable to provide support plates that slightly protrude on both side surfaces.

  The connecting shaft portion between the holding members is usually an uneven portion or a connecting pin supported by the support plate. The clamping member can be rotated with the connecting shaft portion as a fulcrum.

  The U-shaped or V-shaped spring is preferably formed of a synthetic resin material such as an elastically deformable polycarbonate or polyacetal or a rubber material, but may be a metal. It is particularly preferable that both the sandwiching member and the spring are made of synthetic resin because they are easy to process at the time of disposal or recycling. The U-shaped or V-shaped spring is used by bending a slightly thick strip into a "<" shape. The small protrusion which is a characteristic part of the present invention is provided on at least one of both ends. Preferably, it is provided at both ends.

  The small protrusion is preferably a plate-like piece projecting outwardly provided at the spring end, but may be formed by bending the spring end outward.

  The spring fall-off prevention means can be, for example, a shallow groove provided on the opposing surface of the clamping member. All or part of the linear portion of the spring can be accommodated in the groove. In another embodiment, the spring drop-off prevention means may be a small protrusion directed inward provided on the opposing surface of the holding member. The end of the spring and the curved portion are not dropped off by the small protrusion. Both of these grooves and small protrusions may be provided.

  Hereinafter, the clip of the Example of this invention is demonstrated based on attached drawing.

  1 is an exploded perspective view of the first embodiment, and FIG. 2 is an assembly view. As shown in FIG. 1, the clip 1 has two clamping members 21 and 22. The whole is a plate-like member made of synthetic resin, but support plates 31, 31; 32, 32 project inward in the center. On the other hand, the support plates 31 and 31 are provided with through holes 33 and 33, and the other support members 32 and 32 are provided with protrusions 34 and 34. 2). The two clamping members 21 and 22 can rotate with the connecting shaft portion 35 as a fulcrum.

  A U-shaped or V-shaped spring 4 is provided along the opposing surfaces of the holding members 21 and 22 and the connecting shaft 35. This spring is formed of a synthetic resin material such as polycarbonate or polyacetal that can be elastically deformed, or a rubber material, and a slightly thick strip 41 is bent into a "<" shape. Small protrusions 42, which are characteristic features of the present invention, are provided outward on both ends of the spring.

  In order to prevent the spring 4 from dropping off, shallow grooves 23 and 24 in which the springs partially fit are provided on the opposing surface of the clamping member, and a stopper 25 is provided in the vicinity of the U-shaped or V-shaped curved portion. It has been.

  The holding members 21 and 22 have an opening / closing portion end that is a pressing portion in a natural state. In this embodiment, inward claws 26 and 27 are formed to ensure engagement.

  The usage of this clip is the same as the conventional product. That is, although it is in the state of FIG. 3A in a natural state, it will be in the open state of (b) by pressing the clamping members 21 and 22 with a finger. When the finger is removed, the natural state of (a) is again achieved by the force of the spring 4.

  It is the small protrusion 42 of the spring that applies force when the holding members 21 and 22 are pressed with fingers. As shown in FIG. 3C, the point (force point) G where the force is applied and the point (emphasis) H where the force is generated are very close and farthest from the fulcrum F. This increases the repulsive force of the spring and accordingly increases the clamping force of the opening.

  4 (a) and 4 (b) show Example 2 of the present invention. Since only the spring portion is different from the first embodiment, this different portion is illustrated. As shown in FIG. 4A, a notch 44 having a circular arc cross section is provided on the inside of the spring 4a near the U-shaped or V-shaped curved portion 43. Due to the notches 44, as shown in FIG. 4B, the bending angle α is larger than β in the first embodiment (see FIG. 4C). Nevertheless, since the distance L between the end portions of the holding member is not different from that in the first embodiment, the repulsive force of the spring is improved.

  In the illustrated example, the small protrusions 42a are provided as in the first embodiment, but in the second embodiment, this portion is not necessarily required. However, by providing both, the repulsive force of the spring becomes stronger.

  FIG. 5 shows a third embodiment. Since only the portion is different from the first embodiment, this different portion is illustrated. As shown in this figure, the small protrusion 42b is formed by bending the spring end outward. The effects and operations are the same as in the first embodiment.

It is a disassembled perspective view of the clip of Example 1 of this invention. It is an assembly drawing of the clip of Example 1 of the present invention. In Example 1 of this invention, (a) is sectional drawing of a natural state, (b) is sectional drawing of a closed state, (c) is the schematic which shows the effect | action of force. (A) is a perspective view which shows the spring of Example 2, (b) is the same side view. (C) is a side view of the first embodiment. FIG. 10 is a perspective view showing a spring of Example 3. In the invention of the prior art, (a) is a sectional view in a natural state, (b) is a sectional view in a closed state, and (c) is a schematic view showing the action of a force.

Explanation of symbols

1 Clip 4 Spring 4a Spring 21, 22 Holding member 23, 24 Groove 25 Stopper 31 Support plate 32 Support plate 33 Through-hole 34 Projection 35 Connecting shaft portion 42, 42a, 42b Small projection

Claims (5)

Opposing sandwiching members (21, 22), a connecting shaft portion (35) between the sandwiching members, a U-shaped or V-shaped spring (4) provided along the sandwiching member and the connecting shaft portion, In the clip comprising the spring fall-off prevention means,
A clip characterized in that a small protrusion (42) directed outward is provided on at least one end of the spring (4). Opposing sandwiching members (21, 22), a connecting shaft portion (35) between the sandwiching members, a U-shaped or V-shaped spring (4) provided along the sandwiching member and the connecting shaft portion, In the clip comprising the spring fall-off prevention means,
A clip characterized in that a notch (44) is provided inside the vicinity of a U-shaped or V-shaped curved portion to increase the bending angle (α). The clip according to claim 1 or 2, wherein the spring drop-off preventing means is a shallow groove (23, 24) that is provided on an opposing surface of the clamping member and accommodates all or a part of the linear portion of the spring. The clip according to any one of claims 1 to 3, wherein the spring drop-off preventing means is a small protrusion (25) directed inward to the opposing surface of the clamping member. The clip according to claim 2, wherein the cutout has an arcuate cross section.