JP5289513B2 - Open / close work tool - Google Patents

Description

  The present invention relates to an opening / closing operation tool such as a nipper or pliers.

  Conventionally, as an opening and closing work tool, two halves having a blade part at the distal end and a gripping part at the proximal end are pivotally attached to each other, and the urging force is applied to open and hold both gripping parts between the halves. A nipper with an opening biasing function provided with a body has been proposed. The urging body is a coil spring that is installed between predetermined positions on the inner surfaces of the two halves.

  Therefore, this nipper with an opening urging function opens both the blades at the tip by the urging force of the urging body simply by removing the force to grip both gripping parts. It is very convenient that the blades can be opened and closed quickly and repeatedly by performing operations such as weakly grasping to weaken and weakly grasping to weaken.

  However, in this nipper with open biasing function, if both gripping parts are accidentally opened more than necessary, problems such as the removal of the fixing part against the half body or the biasing body extending and breaking. There is a point.

  Therefore, as disclosed in, for example, Japanese Utility Model Laid-Open No. 61-130159, an open biasing structure in which one end of the biasing body is fixed only to one half and the other end is brought into contact with the other half. In this structure, the above-described problems can be solved.

Japanese Utility Model Publication No. 61-130159

  However, the conventional example has a problem that it is difficult to use both gripping portions in the actual usage scene because both gripping portions are freely opened too much. In this regard, it is conceivable to provide the tool with a stopper that prevents the two gripping portions from opening too much, but this is not practical because mass production becomes worse 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 first half 1 having a first action portion 1a at the distal end and a first gripping portion 1b at the proximal end, and a second half 1 having a second action portion 2a at the distal end and a second gripping portion 2b at the proximal end. Opening / closing work tool provided on the first half 1 with a biasing body 3 which is pivotally attached to the second half 2 and abuts against the second half 2 to open and bias both gripping portions 1b, 2b. The second half 2 is provided with a recess 4 that is engaged with the tip 3a of the urging body 3, and the both grips are held by the engagement between the urging body 3 and the recess 4. The parts 1b and 2b are configured to be urged to open to a predetermined opening position and to prevent the opening of both the gripping parts 1b and 2b at the predetermined opening position. When the urging body 3 is further opened from the predetermined opening position with a predetermined force, the tip 3a of the urging body 3 is provided so as to be detached from the concave portion 4, and the second When the body 2 is provided with an inclined portion 5 on the side of the concave portion 4 and the front end portion 3a of the urging body 3 is detached from the concave portion 4, both gripping portions 1b and 2b are closed. The front end 3a of the urging body 3 slides on the inclined portion 5, and the front end 3a is configured to be engaged with the concave portion 4.

  The opening / closing work tool according to claim 1, wherein the biasing body 3 is a plate-like or rod-like long body that is attached to the surface of the first half 1. The distal end portion 3a relates to an opening / closing work tool characterized in that it is bent up with respect to the surface of the first half 1.

  The opening / closing work tool according to any one of claims 1 and 2, wherein the tip portion 3a of the biasing body 3 has a circular shape in plan view.

  The open / close work tool according to any one of claims 1 to 3, wherein each of the first action part 1a and the second action part 2a is a blade part. is there.

Further, the opening and closing tool as defined in any one of claims 1 to 4, wherein the biasing member 3, a convex portion 3 of the urging member 3 'in the through hole 1c provided on the first half 1 The present invention relates to an opening / closing work tool characterized by being provided in the first half 1 by being locked.

  Since the present invention is configured as described above, it is possible to quickly perform opening and closing operations by providing the urging body, and there is provided a recess in which the tip of the urging body is locked. The gripping portion is prevented from opening too much, and therefore, it is easy to use, and since the tip of the biasing member is detached from the recess, the biasing member is prevented from being damaged as much as possible. Since the inclined part is provided on the side, the urging body detached from the recess can be easily and smoothly returned to the original state, and the operability is excellent, so that it is a revolutionary product with extremely high commercial value. It becomes a simple opening and closing work tool.

It is a top view which shows a present Example. It is a perspective view which shows the principal part which concerns on a present Example. It is a perspective view which shows the principal part which concerns on a present Example. It is explanatory drawing of the principal part which concerns on a present Example. It is a top view which shows the principal part which concerns on a present Example. FIG. 6 is an AA enlarged end view of FIG. 5. FIG. 6 is an enlarged end view taken along line B-B in FIG. 5. It is a top view which shows 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 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 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 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 operation | movement explanatory drawing of the principal part which concerns on a present Example.

  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 both the gripping portions 1b and 2b (the first gripping portion 1b and the second gripping portion 2b) are closed by gripping operation, both the action portions 1a and 2a (the first and second action portions 1a and 2b) are closed. When the action part 2a) is closed and the gripping force of the gripping parts 1b and 2b is loosened, the gripping parts 1b and 2b are opened by the biasing force of the biasing body 3, and the action parts 1a and 2a are accordingly opened. , 2a is also opened.

  Further, according to the present invention, the concave portion 4 to which the front end portion 3a of the urging body 3 is locked is provided in the second half body 2. From this configuration, the gripping portions 1b and 2b are predetermined by the urging body 3. While being biased to the open position, the opening of both gripping portions 1b and 2b is prevented at the predetermined open position.

  Therefore, both gripping portions 1b and 2b are easy to use without opening more than necessary.

  Further, according to the present invention, when the both gripping portions 1b and 2b are further opened from a predetermined opening position with a predetermined force, the tip portion of the urging body 3 is provided so as to be detached from the concave portion 4.

  Therefore, even if a strong force is applied to forcefully open both the gripping portions 1b and 2b, the urging body 3 is damaged as much as possible by separating the tip 3a of the urging body 3 from the recess 4. To be prevented.

  Further, in the present invention, the inclined portion 5 is provided on the side of the concave portion 4 in the second half 2, and both gripping portions 1 b and 2 b from the state where the tip portion 3 a of the urging body 3 is detached from the concave portion 4. Is closed, the tip 3 a of the urging body 3 slides on the inclined portion 5, and the tip 3 a is locked to the recess 4.

  If the inclined portion 5 is not provided, if the tip portion 3a of the urging body 3 detached from the concave portion 4 is to be locked to the concave portion 4 again, for example, the gripping portions 1b, Although this is a troublesome work of closing 2b, in this respect, the present invention only closes both gripping portions 1b, 2b, and the front end portion of the urging body 3 with the closing movement of both gripping portions 1b, 2b. 3a moves and slides on the inclined portion 5, and is automatically locked in the concave portion 4.

  Therefore, the urging body 3 detached from the recess 4 can be easily and smoothly returned to the original state, and the operability is improved.

  A specific embodiment of the present invention will be described with reference to the drawings.

  In this embodiment, a first half 1 having a first action portion 1a at the distal end and a first gripping portion 1b at the proximal end, and a second gripping portion at the proximal end having a second action portion 2a. The first half 1 is provided with a biasing body 3 which is pivotally attached to the second half 2 having the portion 2b and abuts against the second half 2 to open and bias both gripping portions 1b and 2b. It is.

  Specifically, as shown in FIGS. 1 to 4, an appropriate pair of long metal plate halves 1 and 2 (first half and second half) are provided, and this first half 1 And the site | parts near the front-end | tip of each 2nd half body 2 are pivotally attached via the shaft member 6a, and it synthesize | combines to each site | part of the base end side rather than the pivoting part 6 of this 1st half body 1 and the 2nd half body 2. Grip portions 1b and 2b (first grip portion and second grip portion) that cover the resin grip 7 are provided. On the other hand, the action portions 1a and 2a (the first grip portion) are provided on the tip side of the pivot attachment portion 6. One working part and a second working part) are provided, and in this embodiment, blade parts are provided as the first working part 1a and the second working part 2a. In the present embodiment, as the first action part 1a and the second action part 2a, the blade parts provided with the cutting blades at the opposing portions of the first half 1 and the second half 2 are employed. As long as the structure exerts the characteristics of the present embodiment, such as a sandwiching action portion that sandwiches and holds the sheet with a flat sandwiching surface may be employed.

  As shown in FIG. 4, the first half 1 is provided with two through holes 1 c penetrating the front and back surfaces at two positions on the base end side relative to the portion pivotally attached to the second half 2. Is a fastening hole for fastening a biasing body 3 to be described later.

  As shown in FIGS. 1 to 3, the second half is provided with a concave portion 4 on the inner edge portion at a base end side position relative to a portion pivotally attached to the first half 1. It is a site | part which the front-end | tip part 3a of the biasing body 3 mentioned later engages and latches.

  Therefore, when both the gripping portions 1b and 2b are opened from the predetermined opening position with a predetermined force, the tip end portion of the urging body 3 is smoothly detached from the concave portion 4.

  Further, an inclined portion 5 is provided on a side portion of the concave portion 4.

  The inclined portion 5 is provided on the track line on which the tip 3a of the urging body 3 moves when the first gripping portion 1b and the second gripping portion 2b are opened, and is inclined upward toward the recess 4. It is provided in the shape.

  In the present embodiment, the inclined portion 5 is provided in a convexly curved inclined shape, but may be an inclined portion made of a flat surface.

  In this embodiment, the first half 1 is provided with a biasing body 3 that biases the first gripping portion 1b and the second gripping portion 2b in the opening direction.

  Specifically, as shown in FIG. 4, the urging body 3 is constituted by a plate-shaped spring material formed by stamping and molding an appropriate metal plate material, and includes a distal end portion 3a and a base end portion 3b. It is formed in a shape having a folded-back portion 3c (a J-shape in plan view), and is configured to have appropriate elasticity from the folded-back portion 3c to the tip portion 3a. Note that the urging body may be formed as appropriate as long as it has a configuration that exhibits the characteristics of the present embodiment, such as molding.

  Further, as shown in FIG. 6, the urging body 3 is provided with convex portions 3 ′ at the base end portion 3 b and the folded-back portion 3 c, and when the urging body 3 is attached to the first half 1, The urging member 3 is provided on the first half 1 by fitting the convex portion 3 ′ into the through-hole 1 c provided in the half 1 to prevent it from coming off.

  Further, in this embodiment, the urging member 3 is temporarily fixed to the first half 1 by locking the convex portion 3 'in the through hole 1c, and the grip 7 is insert-molded in this state. Is completely fixed. Reference numerals 1d and 2d are holes that prevent the grip 7 from being detached when a part of the grip 7 is fitted.

  The front end 3a of the urging body 3 is provided so as to be fitted and locked to the concave portion 4 of the second half 2 described above.

  Therefore, when the first gripping portion 1b and the second gripping portion 2b are closed, the biasing body 3 generates a return biasing force. The biasing action caused by the deformation of the biasing body 3 when the first gripping portion 1b and the second gripping portion 2b are closed applies the first gripping portion 1b and the second gripping portion 2b in the opening direction. This is an open biasing action.

  Further, the front end portion 3a of the urging body 3 is formed in a circular shape in a plan view, and this is smoothly removed from the recessed portion 4 and slid over the inclined portion 5 from the state detached from the recessed portion 4. This is to make it happen.

  Further, the front end portion 3 a of the urging body 3 is bent from the surface of the first half 1 so as to be raised.

  This is the same as when the tip 3a of the urging body 3 is circular in plan view, and it is smooth that the inclined portion 5 is slid over the inclined portion 5 from the recessed portion 4 and detached from the recessed portion 4. This is to make it happen.

  Since the present embodiment is configured as described above, when the first gripping portion 1b and the second gripping portion 2b are gripped and closed, the first action portion 1a and the second action portion 2a are closed. When the force for gripping the gripping portion 1b and the second gripping portion 2b is loosened, the first gripping portion 1b and the second gripping portion 2b are opened by the biasing force of the biasing body 3, and accordingly the first gripping portion 1b and the second gripping portion 2b are opened. The action part 1a and the second action part 2a are also opened.

  Further, in this embodiment, the second half 2 is provided with a recess 4 that is engaged with the tip 3a of the urging body 3, and from this configuration, the urging body 3 allows the first gripping portion 1b and the The two gripping portions 2b are opened and biased to a predetermined opening position, and the opening of the first gripping portion 1b and the second gripping portion 2b is prevented at the predetermined opening position.

  Therefore, the first gripping part 1b and the second gripping part 2b do not open more than necessary.

  Further, in this embodiment, when the first gripping portion 1b and the second gripping portion 2b are opened from a predetermined opening position by a predetermined force, the tip end portion of the biasing body 3 is provided so as to be detached from the concave portion 4. (See Figures 12 and 13).

  Therefore, even if a strong force is applied to forcefully open the first gripping portion 1b and the second gripping portion 2b, the tip portion 3a of the biasing body 3 is detached from the recess 4 so that the biasing body 3 Is prevented as much as possible.

  In the present embodiment, the second half 2 is provided with a convexly curved inclined portion 5 on the side of the concave portion 4, and the tip portion 3 a of the biasing body 3 is detached from the concave portion 4 in the first state. When the gripping portion 1b and the second gripping portion 2b are closed, the tip portion 3a of the urging body 3 slides over the inclined portion 5 so that the tip portion 3a is locked to the recess 4 (FIG. 14). See ~ 16).

  If the inclined portion 5 is not present, if the tip 3a of the urging body 3 detached from the recess 4 is to be locked to the recess 4 again, for example, the first gripping portion 1b is supported while supporting the urging body 3. In this respect, in this embodiment, the first gripping portion 1b is simply closed by closing the first gripping portion 1b and the second gripping portion 2b. As the second gripping portion 2b is closed, the tip portion 3a of the urging body 3 moves and slides over the inclined portion 5 so as to be automatically locked to the concave portion 4.

  Therefore, in order to prevent the urging body 3 from being damaged, the tip 3a detached from the recess 4 can be easily and smoothly returned to the original state (state in which the tip 3a is locked to the recess 3). Operability is improved.

  Therefore, according to the present embodiment, the urging body 3 is provided so that the opening / closing operation can be quickly performed, and the recessed portion 4 to which the distal end portion 3a of the urging body 3 is locked is provided. The gripping portions 1b and 2b are prevented from being over-opened, and therefore easy to use, and the tip portion 3a of the biasing body 3 is detached from the recess 4, so that the biasing body 3 is prevented from being damaged as much as possible. Further, since the inclined portion 5 is provided on the side portion of the concave portion 4, the urging body 3 detached from the concave portion 4 can be easily and smoothly returned to the original state, thereby improving operability. Becomes better.

  In this embodiment, the urging body 3 is a plate-like long body that is attached to the surface of the first half 1, and the tip 3 a of the urging body 3 is the first half 1. Therefore, even if the urging body 3 is provided, it does not interfere with the operation, and the separation from the concave portion 4 and the climbing of the inclined portion 5 are extremely good. Will be done.

  Further, in this embodiment, since the tip 3a of the urging body 3 has a circular shape in plan view, the detachment with respect to the recess 4 and the climbing of the inclined portion 5 can be performed very well in this respect.

  Further, in this embodiment, the convex portion 3 ′ provided on the biasing body 3 is locked in the through hole 1 c provided in the first half 1, and the biasing body 3 is provided on the first half 1. Therefore, the above-described excellent operational effects can be obtained with a simple structure.

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

DESCRIPTION OF SYMBOLS 1 1st half 1a 1st action part 1b 1st grip part 1c Through-hole 2 2nd half 2a 2nd action part 2b 2nd grip part 3 Energizing body 3a Tip part 3 'Convex part 4 Concave part 5 Inclination Part

Claims (5)

  A first half having a first action portion at the distal end and a first gripping portion at the proximal end; and a second half having a second action portion at the distal end and a second gripping portion at the proximal end. An opening / closing work tool provided in the first half with an urging body that is pivotally attached and abuts against the second half to open and urge both the gripping portions. A recess is provided for locking the tip of the urging body, and by the engagement between the urging body and the recess, both the gripping portions are opened and urged to a predetermined opening position, and at the predetermined opening position. Opening of the both gripping portions is prevented, and when the both gripping portions are further opened from the predetermined opening position with a predetermined force, the tip end portion of the biasing body is detached from the recess. In addition, an inclined portion is provided on the side of the concave portion in the second half, and the tip of the biasing body is detached from the concave portion. When the both gripping parts are closed, the opening / closing work tool is structured such that the tip of the biasing body slides on the inclined part and the tip is locked to the recess. .   The opening / closing work tool according to claim 1, wherein the urging body is a plate-like or rod-like long body that is attached to the surface of the first half body, and the tip of the urging body is An opening / closing operation tool, wherein the opening / closing operation tool is bent in a raised state with respect to the surface of the first half.   The opening / closing work tool according to claim 1, wherein a tip portion of the biasing body has a circular shape in a plan view.   The opening / closing work tool according to claim 1, wherein each of the first action part and the second action part is a blade part. In closing tool as defined in any one of claims 1 to 4, wherein the biasing member is said one half engages a convex portion of the biasing member in a through hole provided in the first half Opening and closing work tool characterized by being provided on the body.

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