JP2005342026A - Opening/closing tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly durable and inexpensive opening/closing tool. <P>SOLUTION: The opening/closing tool has an opening energization body 8 for energizing a gripping operation part 4 consisting of a pair of gripping half bodies 1a and 2a in the direction of opening according to the closing motion of the gripping control part 4. A first long spring member 6 and a second long spring member 7 are disposed to project from prescribed positions on opposite inner faces of the gripping half bodies 1a and 2a respectively, and generate energization force in the raising direction against the lying motion. The opening energization body 8 is structured so that the energization force in the raising direction against the lying motion generated when the first and second long spring members 6 and 7 are pressed on each other to lie down becomes the energization force for opening the gripping operation part 4 when the first and second long spring members 6 and 7 are connected to each other and the gripping operation part 4 is moved to be closed. The opening energization body 8 has a non-energization mechanism in a prescribed opening/closing region of the gripping operation part 4 where the energization force between the first and second spring members 6 and 7 is not generated even if the gripping operation part 4 is opened/closed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an opening / closing work tool.

  Conventionally, as a tool for opening and closing, as shown in FIG. 6, a pair of halves 21 and 22 are pivotally attached to each other, and from a pair of gripping halves 21a and 22a provided on one end side of the pivot attachment 23. An opening / closing work part 25 comprising a pair of work halves 21b, 22b that opens and closes by the operation of the gripping operation part 24 is provided on the other end side of the pivoting part 23, and along with the closing movement of the gripping operation part 24 Opening / closing work tools (hereinafter referred to as conventional examples) such as pliers and nippers provided with an opening urging body 28 that generates an opening urging action for urging the gripping operation section 24 in the opening direction have been proposed.

  In this conventional example, the opening / closing operation part 25 is opened by the opening biasing force of the opening biasing body 28 simply by removing the gripping force of the gripping operation part 24, so that the object to be clamped is immediately released. This is convenient for quickly and repeatedly opening and closing the opening / closing operation part 25, such as picking it off immediately. (The operation in the direction of spreading is done with one half of the body sandwiched between fingers, which is very cumbersome and poor workability.)

  By the way, this conventional example uses a coil spring between predetermined positions on the inner surfaces of the gripping halves 21a and 22a as an opening biasing body 28 that generates an opening biasing action that biases the gripping operation portion 24 in the opening direction. 26 is generally constructed, but when the gripping operation part 24 is accidentally opened more than necessary, the adhesive part with the gripping halves 21a, 22a can be removed, or the spring 26 can be extended to bias the function. In addition, there is a problem that the urging function tends to be lowered due to the structure in which the urging action is always effective. Therefore, a structure in which the spring 26 is fixed only to one half and the other is free may be considered.However, when the gripping operation unit 24 is closed and moved, the spring 26 does not contract well and is broken. In some cases, the biasing function does not perform well, and the gripping operation part 24 opens too much and is difficult to use. In this respect, the tool itself prevents the gripping operation part 24 from opening too much. Although it is conceivable to provide a stopper for this purpose, it is not practical because mass productivity deteriorates and the cost increases.

  The present applicant pays attention to the above-mentioned problems, and as a result of repeating various experiments and researches, has developed an epoch-making opening / closing work tool that exhibits unprecedented effects.

  The gist of the present invention will be described with reference to the accompanying drawings.

  A pair of halves 1 and 2 are pivotally attached to each other, and are opened and closed by opening and closing operations of a gripping operation portion 4 including a pair of gripping halves 1a and 2a provided on one end side of the pivoting portion 3. An opening / closing operation part 5 comprising work halves 1b, 2b is provided on the other end side of the pivoting part 3, and the gripping operation part 4 is urged in the opening direction as the gripping operation part 4 is closed. An opening / closing work tool provided with an opening urging body 8 that generates an urging action, which protrudes at a predetermined position on the inner surface of each of the gripping halves 1a and 2a, and causes an urging action to occur with respect to a buckling movement. When the first elongate spring material 6 and the second elongate spring material 7 are connected and the gripping operation unit 4 is closed, the first elongate spring material 6 and the second elongate spring material 7 The opening urging body is provided so that the urging action that occurs when the two are pressed against each other and moved is the opening urging action on the gripping operation portion 4. Even if the gripping operation part 4 is opened and closed in the predetermined opening and closing movement region of the gripping operation part 4, the first long spring material 6 and the second long spring The present invention relates to an opening / closing work tool characterized in that a non-biasing mechanism 11 that does not cause a biasing action by the members 7 is provided.

  In addition, the second long spring material 7 is provided with a second connection portion 10 that is connected to the first connection portion 9 provided in the first long spring material 6 in a loose-fitting state. In the opening / closing movement region, the first long spring material 6 and the second long spring material 7 are communicable by the first connecting portion 9 and the second connecting portion 10 moving freely even if the gripping operation portion 4 is closed. The opening / closing work tool according to claim 1, wherein the non-biasing mechanism 11 is configured so as not to cause an urging action due to.

  In addition, a plate-like spring material is adopted as the first long spring material 6 and the second long spring material 7, and the first long spring material 6 and the second long spring material 7 are respectively provided with side plates. There are provided a first connecting portion 9 and a second connecting portion 10 each formed of a concave portion having a length in the length direction of each of the one long spring material 6 and the second long spring material 7. The opening and closing according to any one of claims 1 and 2, characterized in that the first long spring material 6 and the second long spring material 7 are crossed with the connecting portion 10 in a loosely fitted state. It concerns work tools.

  Since the present invention is configured as described above, the opening / closing operation can be satisfactorily performed by providing the opening urging body, and the opening urging body is prevented from being damaged as much as possible. It becomes an epoch-making opening and closing work tool with extremely high commercial value.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  In the present invention, for example, when the gripping operation unit 4 is gripped and closed, the opening / closing work unit 5 is closed, and when the force for gripping the gripping operation unit 4 is loosened, the opening biasing body 8 is opened. The holding operation unit 4 is opened by the force, and the opening / closing operation unit 5 is also opened accordingly.

  By the way, the present invention provides the first long spring material 6 and the second long spring even when the gripping operation portion 4 is closed and moved in the predetermined opening / closing movement region of the gripping operation portion 4. There is provided a non-biasing mechanism 11 that does not cause a urging action by the members 7.

  That is, if the first long spring material 6 and the second long spring material 7 have a structure in which an urging function is always generated, the force is always applied even when not in use. The urging function tends to be lowered, and further, when the gripping operation unit 4 is opened more than necessary, there is a problem that the urging function is lowered or broken.

  In this respect, the present invention provides the non-biasing mechanism 11 in the opening / closing biasing body 8 so that the function of the non-biasing mechanism 11 functions when, for example, the opening / closing working unit 5 is opened by a predetermined amount. By setting, so-called play is provided in a predetermined opening / closing movement region of the grip operation unit 4. For example, when not in use, the grip operation unit 4 is opened when performing quick opening and closing operations. Even if it is operated, it is possible to prevent an excessive load from being applied to the opening / closing biasing body 8 as much as there is this play. Can be improved dramatically.

  Specific embodiments of the present invention will be described with reference to the drawings.

  In the present embodiment, a pair of halves 1 and 2 are pivotally attached to each other, and by opening and closing operation of a gripping operation part 4 comprising a pair of gripping halves 1a and 2a provided on one end side of the pivoting part 3. An opening / closing work part 5 comprising a pair of work halves 1b, 2b that open and close is provided on the other end side of the pivoting part 3, and the gripping operation part 4 is opened in the opening direction as the gripping operation part 4 is closed. An opening urging body 8 is provided that generates an opening urging action for urging.

  Specifically, as shown in FIG. 1, an appropriate pair of metal halves 1 and 2 are provided, and the halves 1 and 2 are pivotally attached to the end portions of the halves 1 and 2 via a shaft member 3A. A gripping operation part 4 comprising work halves 1b and 2b covering the grip is provided at a base end side part from the pivoting part 3, while a clamping surface is formed at a tip side part from the pivoting part 3 An opening / closing operation part 5 comprising the pair of working halves 1b, 2b is provided. In this embodiment, the clamping work unit 5 is used as the opening / closing work part 5 to hold the object to be clamped between the flat clamping surfaces. As long as the configuration exhibits the characteristics of the present embodiment, such as the cutting work unit 5 may be adopted, the opening / closing work referred to in this specification includes various operations such as clamping work and cutting work. In addition, the closed state in the opening / closing work unit 5 is not necessarily the contact between the clamping surfaces and a gap is created. If the function is exhibited, it is said to be a closed state.

  In the present embodiment, an opening urging body 8 that urges the gripping operation unit 4 and the opening / closing operation unit 5 in the opening direction is provided.

  Specifically, the opening urging body 8 includes a pair of plate spring members (first long spring member 6, second member) formed by forming an appropriate metal member as shown in FIGS. It is composed of a long spring material 7).

  The first elongate spring material 6 and the second elongate spring material 7 have appropriate elasticity and are appropriately bent, and are pivotally attached at predetermined positions on the inner surfaces of the gripping halves 1a and 2a. Projected in an inclined state toward the pivot part 3 at a position near the part 3, and generates an energizing action for a prone movement from a state in which no load is applied, and prone an energizing action for an actuating action It is comprised so that an effect | action may be produced.

  Further, the first long spring material 6 and the second long spring material 7 are mutually connected at the tip end portions, and when the gripping operation portion 4 is closed, the first long spring material 6 The second elongate spring members 7 are configured to press each other in a support state where they are leaning against each other and move downward to generate a biasing action. The urging action that occurs between the first long spring member 6 and the second long spring member 7 when the grip operation unit 4 is closed is the grip operation unit 4 (opening / closing operation unit 5). This is an opening biasing action that biases in the opening direction.

  Further, the opening / closing urging body 8 has a first long length even when the gripping operation portion 4 is closed in a predetermined opening / closing movement region R1 of the gripping operation portion 4 in a state where the opening / closing operation portion 5 is opened by a predetermined amount. There is provided a non-biasing mechanism 11 that does not cause a biasing action caused by the spring members 6 and the second long spring members 7.

  As shown in FIGS. 3 and 4, the non-biasing mechanism 11 includes a second connecting portion 10 that is connected to a first connecting portion 9 provided on the first long spring material 6 in a loosely fitted state. Even if the gripping operation part 4 is closed and moved in the predetermined opening / closing movement region R1 of the gripping operation part 4 provided in the spring material 7, the first connection part 9 and the second connection part 10 move freely. The one long spring material 6 and the second long spring material 7 are provided so as not to be pressed against each other and to cause no urging action.

  Specifically, the first long spring material 6 and the second long spring material 7 are respectively provided with lengths in the length direction of the first long spring material 6 and the second long spring material 7. The first connecting portion 9 and the second connecting portion 10 each having a concave portion are provided, and the first connecting portion 9 and the second connecting portion 10 are connected to the first long spring material 6 and the second long spring material 7. The non-biasing mechanism 11 is configured by crossing and connecting in a loosely fitted state.

  In this embodiment, as shown in FIGS. 1 and 5, the function of the non-biasing mechanism 11 is set to function when the opening / closing operation unit 5 is opened by a predetermined amount and is not used.

  Specifically, in the entire region where the opening / closing movement in the gripping operation unit 4 is possible (the position from the position where the opening / closing operation unit 5 is closed to the position where the opening movement is restricted due to the presence of the opening biasing body 8). Among them, in the predetermined opening / closing movement region R1, the first elongate spring material 6 and the second elongate spring material 7 do not move and do not press each other, and the urging action (open urging action) does not occur. Moreover, in the predetermined opening / closing movement region R2 closer to the closing side than the predetermined opening / closing movement region R1, the first long spring material 6 and the second long spring material 7 are pressed in a support state in which they are leaning against each other. The urging action (opening urging action) is generated by moving up and down.

  That is, the urging and urging action (open urging action) between the first long spring material 6 and the second long spring material 7 occurring in the predetermined opening / closing movement region R2 for closing and operating the grip operation unit 4 is performed. In the predetermined opening / closing movement region R1 on the opening side after no longer occurring, the first connecting portion 9 and the second connecting portion 10 move freely to become a non-biased region.

  Further, the opening / closing urging body 8 presses the gripping operation unit 4 in the closing direction when the gripping operation unit 4 enters the predetermined opening / closing movement region R3 on the opening side of the predetermined opening / closing movement region R1. An obstructive biasing action is also generated.

  From the above configuration, the opening / closing urging body 8 is provided with the non-biasing mechanism 11 so that the opening / closing work portion 5 is gripped and the opening / closing operation portion 5 is fully closed from the predetermined position P1. In a predetermined opening / closing movement region R2 up to a predetermined position P2 opened by a predetermined amount, the first elongate spring material 6 and the second elongate spring material 7 urge the grip operation section 4 in the open direction. In the predetermined opening / closing movement region R1 from the predetermined position P2 to the predetermined position P3 opened by a predetermined amount in the opening direction, the first elongate spring material 6 is configured by the non-biasing mechanism 11. In the predetermined opening / closing movement region R3 from the predetermined position P3 to the predetermined position P4 opened by a predetermined amount in the opening direction, no load is applied to each of the second long spring members 7, and a predetermined amount is opened in the opening direction. First long spring material 6, second long spring material 7 Thus, a closing biasing action that biases the gripping operation unit 4 in the closing direction is generated (see FIG. 5).

  Since the present embodiment is configured as described above, when the gripping operation unit 4 is gripped and closed, the opening / closing work unit 5 is closed, and when the force for gripping the gripping operation unit 4 is loosened, the gripping operation unit 4 is opened. The gripping operation unit 4 is opened by the biasing force of the force body 8, and the opening / closing operation unit 5 is also opened accordingly.

  In this embodiment, since the non-biasing mechanism 11 is provided in the opening / closing biasing body 8, that is, since a so-called play is provided in a predetermined opening / closing movement region R1 of the gripping operation portion 4, for example, when not in use. Of course, when the opening / closing operation is repeatedly performed quickly, even if the gripping operation portion 4 is opened, it is possible to prevent an excessive load from being applied to the opening / closing biasing body 8 by the amount of play. Further, it is possible to prevent the opening / closing biasing body 8 from being damaged as much as possible, and to dramatically improve the durability.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

It is a front view which shows a present Example. It is operation | movement explanatory drawing of a present Example. It is operation | movement explanatory drawing of the principal part which concerns on a present Example. It is operation | movement explanatory drawing of the principal part which concerns on a present Example. It is a schematic operation | movement explanatory drawing of the principal part which concerns on a present Example. It is a front view which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Half 1a Grasping half 1b Working half 2 Half 2a Grasping half 2b Working half 3 Pivoting part 4 Gripping operation part 5 Opening / closing work part 6 First long spring material 7 Second long spring Material 8 Opening biasing body 9 First connecting part
10 Second connecting part
11 Unbiased mechanism

Claims (3)

  An opening / closing work part comprising a pair of work halves that are pivotally attached to each other by a pair of half bodies and opened and closed by opening and closing operations of a gripping operation part comprising a pair of gripping halves provided on one end side of the pivoting part. An opening / closing work tool provided with an opening urging body that generates an urging action for urging the gripping operation part in the opening direction in accordance with the closing movement of the gripping operation part. The first half spring material and the second long spring material, which are projected at predetermined positions on the inner surface of each of the gripping halves and which generate an urging action against the lying down motion, When the gripping operation part is closed, the first urging spring material and the second elongate spring material are pressed against each other, and the generated urging action is generated to cause the urging action to be applied to the gripping operation part. The opening urging body is configured so as to act, and the opening / closing urging body is provided in a predetermined opening / closing movement region of the gripping operation portion. There are, first elongate spring member even when the grip operation portion is opened and closed, closing tool, characterized in that the biasing action of the second elongate spring member comrades are provided free biasing mechanism does not occur.   The second long spring material is provided with a second connection portion that is connected loosely to the first connection portion provided on the first long spring material. Even if the holding operation portion is closed, the first connecting portion and the second connecting portion move so that the urging action by the first long spring material and the second long spring material does not occur. The opening / closing work tool according to claim 1, wherein a non-biasing mechanism is configured. A plate-like spring material is adopted as the first long spring material and the second long spring material, and the first long spring material is provided on the side of each of the first long spring material and the second long spring material. The first long spring material is provided with a first connecting portion and a second connecting portion, each of which is a concave portion having a length in the length direction of each of the second long spring materials. The opening / closing work tool according to any one of claims 1 and 2, wherein the second long spring members are crossed and connected in a loosely fitted state.

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