JP2011152398A - One hand gripped manual operation tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a one hand gripped manual operation tool which enables an operator to easily perform load adjustment and to easily determine to stop operation before a force of a wear breakage limit or more to an operation portion. <P>SOLUTION: In the metallic one hand gripped manual operation tool, a first half body 1 and a second half body 2 are pivoted to each other, each body has an operation portion 3 and a grip portion 4 respectively on one end side and the other end side. The grip portions 4 are held and clenched by one hand with the fingers being on one of the grip portions while the palm abuts on the other, or the grip portions 4 are moved to hold an object with the thumb being abut on one grip portion and the other fingers being abut on the other, whereby the operation portions 3 are closed to perform a cutting operation or holding operation. A distortion portion 5 is provided on the base end side of each grip portion 4. When a predetermined load or more is applied by holding and clenching the grip portions 4 by one hand, the grip portions are gradually distorted inside, starting from the distortion portions 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a one-hand-grip manual work tool in which an operator such as a nipper or a pliers grips or cuts a workpiece by opening and closing while grasping with one hand.

  Conventional one-hand gripping manual work tools such as nippers and pliers use this principle to change the small gripping force into a large cutting force or gripping force and cut the workpiece. It was also to grab and grab.

  For this reason, forged products that generally increase the rigidity and strength of the single-handed hand-operated manual work tool as a whole so that force is efficiently applied to the working part that opens and closes the tip of the single-handed hand-operated manual work tool. It was.

  However, forged one-handed hand-operated manual tools mainly for securing rigidity and strength easily apply an excessive load to the working part that opens and closes, and cuts and grips delicate work or soft objects. In the work, there was a problem that the workpiece was damaged or damaged.

  For this reason, when an operator cuts or grasps a delicate work or a soft object, he / she tries to adjust it to a delicate load so as not to damage or damage the workpiece, but this operation is very difficult. there were.

  In addition, a force exceeding the wear and tear limit is often applied to the working part that opens and closes. When a load exceeding the limit is applied in this way, for example, in the case of a nipper, the blade is damaged, etc. The working part could be damaged.

  Even in such a case, it is not easy to adjust the load so that a force exceeding the wear and tear limit is not applied to the working portion of the one-hand-grip manual work tool.

  Therefore, the present invention is an epoch-making one-handed hand-held manual operation that can easily perform delicate load adjustments, and that makes it easy for an operator to make a decision to stop work before a force exceeding the wear and tear limit is applied to the working part. It is intended to provide work tools.

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

  A metal first half 1 and a metal second half 2 are pivotally attached, and a working part 3 for opening / closing operation is provided on one end side, and a gripping part 4 for gripping operation is provided on the other end side. The gripping part 4 is in a state where a finger is placed on one of the first half 1 and the second half 2 and a palm is in contact with the other second half 2 or the first half 1. Or the first half 1 and the second half 2 are brought into contact with the thumb and the other second half 2 or the first half 1 A metal one-hand-grip type manual operation tool that performs a cutting operation or a gripping operation by closing the working portion 3 by moving the holding portion with the fingertips of other fingers in contact with each other. A bending portion 5 is provided on the base end side of the portion 4, and the gripping portion 4 is gripped while being gripped with one hand, or can be sandwiched and moved between the thumb and the fingertip of another finger, and a load exceeding a predetermined load. The gripping portion 4 is gradually bent inward from the bending portion 5 when the gripping portion 5 is added, and the gripping portion 4 is bent to allow the operator to move the gripping portion 4. The present invention relates to a one-hand-grip manual work tool characterized by being configured to be able to grasp the force applied to the.

  Further, when any load in the range of 5 kgf to 30 kgf is applied to the gripping part 4, each gripping part 4 bends and moves inward, and the gripping part 4 of the first half 1 The one-handed grip-type manual operation according to claim 1, wherein the facing distance between the second half 2 and the gripping part 4 is set to be 10 mm to 20 mm narrower than the facing distance before the bending movement. It concerns work tools.

  Moreover, the said bending part 5 forms the said holding | grip part 4 of each of said 1st half 1 and said 2nd half 2 in a curved shape, and makes said 1st half 1 and said 2nd half 2 The gripping portion 4 is pivotally attached so as to have a curved shape that protrudes outward, and a portion to which the load of the curved gripping portion 4 is applied is defined as a power point portion 6. When any load in the range of 30 kgf is applied, each power point portion 6 bends and moves inward, and the force point portion 6 of the first half 1 and the force point portion 6 of the second half 2 The one-hand-grip type manual work tool according to any one of claims 1 and 2, characterized in that the opposing interval is set to a shape that is 10 mm to 20 mm narrower than the opposing interval before the opposing movement. It is.

  In addition, the gripping portion 4 is gradually thinned from the base end portion of the gripping portion 4 to the power point portion 6 and from the base end portion of the gripping portion 4 toward the power point portion 6. When the bending portion 5 is provided and a load is applied to the force application portion 6, the gripping portion 4 is gradually bent, and the starting point of bending when the gripping portion 4 is bent is the force application portion 6. It is set as the structure which moves to the base end part side of the said holding | grip part 4 from the side, It concerns on the one-hand holding | grip type | mold manual operation tool of any one of Claims 1-3 characterized by the above-mentioned. .

  Further, the first half body 1 made of metal and the second half body 2 made of metal are pivotally attached to each other, the working part 3 that opens and closes at one end side thereof, and the gripping part 4 that makes a gripping operation at the other end side. The gripping portion 4 is configured such that a finger is placed on one of the first half 1 and the second half 2 and a palm is brought into contact with the other second half 2 or the first half 1. By gripping with one hand in the state of being held, or with the thumb abutting on one of the first half 1 and the second half 2 and the other second half 2 or the first half 1 is a metal one-hand-grip manual work tool that performs a cutting operation or a gripping operation by closing the working unit 3 by holding and moving the fingertip of another finger in contact with The gripping portion 4 has a degree of deflection when a load in the range of 5 kgf to 20 kgf is applied to the gripping portion 4 in any of the ranges of 0.5 mm / kgf to 2.6 mm / kgf. A one-hand-grip manual work tool characterized in that the gripper 4 is bent so that the operator can grasp the force applied to the gripper 4 when the gripper 4 is bent. It is concerned.

  Further, the first half body 1 made of metal and the second half body 2 made of metal are pivotally attached to each other, the working part 3 that opens and closes at one end side thereof, and the gripping part 4 that makes a gripping operation at the other end side. The gripping portion 4 is configured such that a finger is placed on one of the first half 1 and the second half 2 and a palm is brought into contact with the other second half 2 or the first half 1. By gripping with one hand in the state of being held, or with the thumb abutting on one of the first half 1 and the second half 2 and the other second half 2 or the first half 1 is a metal one-hand-grip manual work tool that performs a cutting operation or a gripping operation by closing the working unit 3 by holding and moving the fingertip of another finger in contact with When a load of 5 kgf is applied to the gripping part 4, the gripping part 4 is bent in any amount within a range of 5 mm to 15 mm, or 20 kgf is applied to the gripping part 4. The grip portion 4 is related to the hand grip type hand work tool, characterized by being configured to be either deflection movement amount in the range of 10mm~20mm when a load is applied.

  In addition, the degree of flexure is determined by forming the grip portions 4 of the first half 1 and the second half 2 in a curved shape and applying a load to the curved grip portion 4. The amount of bending movement per unit load is the force point portion 6 and the force point portions 6 of the first half 1 and the second half 2 move inward when a load is applied to the gripping portion 4. The present invention relates to the one-hand-grip manual operation tool according to any one of claims 5 and 6.

  Further, the working unit 3 is formed by forming a cutting blade portion 8 in the opposing sandwiching unit 7 and grasping and gripping with one hand or by pinching and moving between the thumb and another fingertip. It is comprised so that it may be made to close and to perform a cutting operation | work, It concerns on the one-hand holding | grip type | mold manual operation tool of any one of Claims 1-7 characterized by the above-mentioned.

  Since the present invention is configured as described above, when the workpiece is cut or gripped, the gripping portion is held in a gripped state or is movable between the thumb and the fingertips of other fingers. When a load greater than the load is applied, the bending portion provided in the gripping portion gradually begins to bend, and the operator can visually recognize or feel this bending. Thus, the load applied to the gripping part can be easily finely adjusted, and the work can be performed without damaging or damaging the workpiece even when a delicate work or a soft object is sandwiched or cut.

  Also, if the operator forcibly grips the gripping part with more force than necessary, or if it is pinched with the fingertips, the amount of bending will increase, and the worker will apply more load than necessary. This makes it possible to stop the work before a force exceeding the wear and tear limit is applied to the work part, and it is a one-hand-grip manual work tool with excellent practicality that does not cause the work part to wear or break. .

  In the inventions of claims 2, 3, 5 and 6, since the amount of flexure movement of the gripping part when a predetermined load is applied to the gripping part is clear, in addition to the gripping part It is possible to easily grasp the load that is being deflected, and notice that the worker is applying an excessive load before the workpiece is damaged or damaged by applying an excessive load to the work part. Therefore, it becomes a one-hand-grip manual work tool with excellent practicality that does not damage or damage the workpiece.

  Further, in the invention of claim 4, since the bending portion is formed into a shape in which the thickness of the gripping portion gradually becomes thinner from the base end portion of the gripping portion toward the power point portion, the starting point of the bending moves. This is a one-hand-grip manual work tool with excellent practicality, in which stress is not concentrated repeatedly in one place and damage due to metal fatigue hardly occurs.

  According to the seventh aspect of the present invention, it is a one-hand-grip manual work tool with excellent operability that is formed in a shape that makes the grip portion easy to grip.

  Further, in the invention described in claim 8, for example, when an operation of cutting only the outer workpiece with a workpiece constituted by a hard workpiece inside and a soft workpiece outside (for example, For example, when the outer core is cut and the outer coating is cut, the load can be easily adjusted, and only the one that is desired to be cut can be easily cut. Since a load is not applied, it becomes a one-hand-grip manual work tool excellent in economy that can extend the service life without missing the cutting blade.

It is a perspective view which shows the case where a present Example is comprised in a nipper. It is a description front view which shows the use condition of a present Example. It is a front view which shows the 1st half body at the time of comprising a present Example at a nipper. It is a perspective view which shows the case where a present Example is comprised to pliers. It is explanatory front view which shows the case where a present Example is comprised to pliers. It is explanatory drawing which shows the bending state when a load is added to the holding part of a present Example. It is a graph which shows the relationship between the load of a present Example and a prior art example, and a bending displacement. It is explanatory front view which shows the case where it comprises so that bending may arise only in either one of the 1st half body or the 2nd half body of a present Example. It is explanatory front view which shows the state which comprised the present Example to the precision nipper and was gripped with the fingertip. It is a front view which shows the case where the opposing clamping part of a present Example is comprised in the pliers formed in the curved shape. It is a front view which shows the case where it comprises in the precision pliers which formed the opposing clamping part of the present Example in the curved shape, and formed the finger-tip latching part in the grip part front-end | tip. It is a front view which shows the bending part of another Example. It is a front view which shows the bending part of another Example. It is a front view which shows the bending part of another 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 order to cut or grasp the workpiece 9 by using the one-hand holding type manual work tool of the present invention, a finger is put on one of the first half 1 and the second half 2 and the other second half Hold the grip part 4 with one hand in a state where the palm is in contact with the body 2 or the first half 1, insert the workpiece 9 between the work parts 3, and grip the grip part 4. Or with the thumb touching one of the first half 1 and the second half 2 and the fingertip of another finger touching the other second half 2 or the first half 1 Then, the working unit 3 closes and comes into contact with the workpiece 9 to be in a clamping state.

  When the gripping portion 4 is further gripped from the state in which the workpiece 9 is clamped or a load is applied by clamping the gripping portion 4 between the thumb and the other fingertip, the workpiece 9 closes the working portion 3. A resistance is generated in the operation movement, and a load greater than this resistance force is required. When a further load is applied to the gripping portion 4, a load greater than a predetermined load is applied, and the bending portion 5 provided in the gripping portion 4 is the starting point. The gripping portion 4 begins to bend inwardly, and the pivoting portion 10 is used as a fulcrum while the distance between the gripping portions 4 provided in the first half 1 and the second half 2 is decreasing. A state in which the workpiece 9 is cut or grasped by applying a load larger than the load applied to the gripping portion 4 to the working portion 3 by the lever principle and further moving the working portion 3 in the closing movement direction. Or can be held by.

  Therefore, for example, when the work 9 is very hard when the work 9 is cut or grasped by the working unit 3, the conventional one-hand-grip manual work tool is used. It is impossible to grasp how much load is applied, and the work unit 3 may be damaged by applying a load greater than the wear and breakage limit to the work unit 3. Since the bending of the gripping part 4 increases by applying a load more than necessary to the gripping part 4, an excessive load is applied to the working part 3 due to the large deflection of the gripping part 4. The operator can easily grasp this, and the worker can stop the cutting operation before the force exceeding the wear and tear limit is applied to the working unit 3.

  Further, for example, when the work 9 is to be cut or grasped by the work unit 3 and the work 9 is required to be very soft and delicate, a load applied to the work 9 Requires a small load that needs to be finely adjusted, but the conventional one-hand-grip manual work tool tends to apply a load to the work part 3 and therefore the load cannot be easily adjusted. Although a load more than necessary was applied to 9 and the workpiece 9 was sometimes damaged or broken, the gripping portion 4 bends even if the load applied to the gripping portion 4 is small in the present invention. The operator can easily grasp that the work part 3 has cut or grasped the workpiece 9 by bending the grip part 4 even if the operator is lightly gripped or gripped by the fingertip. Damage to the workpiece 9 without applying more load than necessary Kicking or can hold the gripping or cutting without.

  In this way, the degree of bending of the gripping part 4 when a load greater than or equal to a predetermined load is applied to the gripping part 4 is configured to bend more than the conventional one-hand gripping type manual work tool. The person can easily grasp how much load is applied to the gripping part 4, and the load as a reaction of the elastic force generated when the gripping part 4 bends on the hand or fingertip of the operator. Since it will be felt, the load applied to the gripping part 4 can be further grasped.

  Therefore, since the load applied to the gripping part 4 can be easily adjusted, the work 9 can be damaged or damaged even when delicate work or when a soft object is cut or held in a gripped state. You can work without doing.

  In addition, when a load more than necessary is applied to the gripping part 4, the gripping part 4 is gripped because the distance between the gripping parts 4 of the first half 1 and the second half 2 becomes too narrow. It becomes difficult to apply force and it becomes difficult to apply a load more than necessary, and the operator does not forcibly grasp the grip portion 4 with an excessive force and applies a load exceeding the wear and tear limit to the work portion 3. Therefore, it becomes an epoch-making one-hand-grip manual work tool excellent in practicality in which the working unit 3 is not worn or damaged.

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

  In this embodiment, the first half 1 made of metal and the second half 2 made of metal are pivotally attached to each other, the working unit 3 that opens and closes at one end side thereof, and the gripping operation that is held at the other end side. When the holding part 4 is provided, the bending part 5 is provided on the proximal end side of the gripping part 4, and the gripping part 4 is gripped while being gripped with one hand, and a load exceeding a predetermined load is applied. The gripping part 4 is a one-hand-grip manual work tool configured so that the gripping part 4 gradually bends inward starting from the bending part 5.

  Specifically, the first half 1 and the second half 2 are formed by forming an appropriate metal member in a substantially S shape, and being closer to the tip side of the first half 1 or the second half 2, respectively. The pivoting portion 10 is provided, the opposing clamping portion 7 is provided at the tip side of the pivoting portion 10, and the opposing clamping portion 7 between the first half 1 and the second half 2 is paired with the working portion 3. It is formed, and the gripping portion 4 is provided on the base end side with respect to the pivoting portion 10, and the one-hand gripping-type manual work tool having excellent durability with a configuration in which these are integrally molded. .

  In the present embodiment, a nipper is provided with a cutting blade portion 8 in the opposing sandwiching portion 7 that forms the working portion 3. However, as long as it exhibits the characteristics of the present embodiment, such as pliers and pliers, it is appropriately adopted. It is possible.

  Further, the first half 1 and the second half 2 configured as described above are connected to each other at the pivoting portion 10 so that the gripping portion 4 between the first half 1 and the second half 2 is provided. When it is grasped with one hand and closed, the working unit 3 is closed in synchronization with this.

  More specifically, the gripping portions 4 of the first half 1 and the second half 2 are formed in a curved shape, and a place where the load of the curved gripping portion 4 is applied is a force point portion 6. In the embodiment, the distance between the force application points 6 is the largest in the distance between the gripping portions 4 of the first half 1 and the second half 2 facing each other.

  When the grip part 4 is operated while being gripped, the top part of the grip part 4 is the power point part 6, and when the grip part 4 is operated by being pinched with a fingertip, the tip part of the grip part 4 is the power point part 6. Become.

  The grip portion 4 is formed of a metal member having a thickness that is elastically deformed by a load of about 20 kgf to 30 kgf, which is an average grip strength value of a person, so that the cross-sectional shape is substantially rectangular. The shape is formed such that the thickness gradually decreases from the proximal end portion of the holding portion 4 toward the force point portion 6, and a portion where the thickness gradually decreases is defined as the bending portion 5.

  Thus, the grip part 4 is formed, and the operator puts a finger on one grip part 4 of the first half 1 and the second half 2, and the other second half 2 or the first half. When the gripping part 4 is gripped with one hand in a state where the palm is in contact with the one gripping part 4 and a predetermined load is applied, the bending part 5 is greatly elastically deformed (the appearance is flexed) Only the portion 5 is elastically deformed, and the other gripping portion 4 is configured to be deformed so as not to be elastically deformed).

  That is, by gradually reducing the thickness of the bending portion 5 from the proximal end portion of the gripping portion 4 toward the force application portion 6, the sectional moment of the bending portion 5 is reduced toward the force application portion 6 side. The base end portion side of the gripping portion 4 is made larger so that a position that becomes a starting point of bending with respect to a load applied to the gripping portion 4 is moved.

  That is, when the operator applies a load to the gripping portion 4, the point near the power point portion 6 becomes the starting point of bending when the load is small, and the load applied to the gripping portion 4 gradually increases. The starting point of bending is configured to move toward the base end side of the grip portion 4.

  With such a configuration, the starting points of bending do not concentrate at the same location in the gripping portion 4, and the gripping portion 4 is prevented from being easily damaged by metal fatigue.

  In the present embodiment, the gripping portion 4 is formed with a thickness that is elastically deformed by a load of about 20 kgf to 30 kgf, which is an average gripping force value of a person. However, the bending portion 5 provided in the gripping portion 4 is formed. The thickness of the thinnest part is set to any thickness within the range of 1 mm to 3 mm, and the elastic deformation of the bent portion 5 can be seen visually even with a small load of 20 kgf to 30 kg or less, which is an average grip strength value of a person. It is configured so that the gripping portion 4 is easily bent starting from the bending portion 5.

  In the present embodiment, the thickness of the bent portion 5 is reduced so that the bent portion 5 can be easily elastically deformed. However, as shown in FIGS. Alternatively, any structure that exhibits the same characteristics as in the present embodiment, for example, by forming the side surface in a concavo-convex shape or a jagged shape can be employed as appropriate.

  The present embodiment will be described in detail with respect to the amount of flexure movement of the gripping portion 4 that deforms to such an extent that the elastic deformation of the flexure portion 5 can be seen even with a small load of 20 kgf to 30 kg or less, which is the average gripping force value of the person described above. The definition of the amount of movement of the bending is that the opposing distance between the force application points 6 immediately before the gripping part 4 begins to bend, and that the force application part 6 of the gripping part 4 is subjected to a load and the gripping part 4 is bent, This is the difference between the opposing distances between the force application points 6 when moving inward, in other words, the amount of movement of the force application point 6 provided on the gripping part 4 of each of the first half 1 and the second half 2. Is the sum of

  More specifically, for example, the distance from the tip of the working part 3 to the pivoting part 10 of the one-hand-grip manual work tool and the force point part 6 to which the load of the gripping part 4 is applied to the pivoting part 10. In a one-hand-grip manual work tool having a ratio of approximately 1: 5 to the distance, a conventional one-hand grip-type manual work tool such as a nipper or pliers applies a load of approximately 30 kgf to the grip portion 4. When applied, the load acting on the working part 3 is about 150 kgf. As shown in the first conventional example and the second conventional example in FIG. 7, the amount of movement of the gripping part 4 at this time is 3 mm to 4 mm. In other words, the degree of deflection (the amount of deflection movement per unit load) is 0.1 mm / kgf to 0.13 mm / kgf.

  On the other hand, a present Example acts on the operation | work part 3 when the same 30 kgf load is added to the grip part 4 by setting the thickness of the thinnest part of the bending part 5 to 2.5 mm. Although the load is the same as about 150 kgf, as shown in the first embodiment in FIG. 7, the bending movement amount of the gripping portion 4 is about 20 mm, and the degree of bending is about 0.7 mm / kgf. Since the amount of bending movement (degree of bending) is about 6 times that of the conventional product, the amount of bending movement can be easily understood from the fact that the gripping portion 4 is bent.

  Also, by setting the degree of deflection to 0.7 mm / kgf, as shown in the first embodiment in FIG. 7, when a load of 20 kgf is applied to the gripping portion 4, the amount of deflection movement is about 14 mm, Further, when a load of 10 kgf is applied, the amount of flexure movement is about 7.0 mm, and when a load of 5 kgf is applied, the amount of flexure movement is about 3.5 mm. Since the bending movement amount is larger than that of the gripping manual work tool, it can be easily grasped that the gripping part 4 is flexed almost simultaneously when the gripping part 4 is gripped and load is applied. As described above, the amount of bending of the gripping portion 4 when the gripping portion 4 is grasped is determined by using a one-hand gripping-type manual operation tool whose amount of bending when a predetermined load is applied is known. It is possible to easily grasp whether the load of Kill.

  Further, since the operator's hand can feel the reaction force of the elastic energy of the gripping part 4 caused by this bending, it is possible to recognize the load applied to the gripping part 4 even more and has excellent practicality. It becomes a periodical one-hand-grip manual work tool.

  Further, by applying a load of 30 kgf or more to the gripping part 4, the amount of flexure movement of the gripping part 4 becomes 20 mm or more. When the amount of flexure movement becomes 20 mm or more, the first half 1 and Since the gap between the gripping parts 4 with the second half 2 is so narrow that the human hand can grip the gripping part 4 tightly, the inevitably the gripper 4 It is not easy to apply a load of 30 kgf or more to this, and in this state, it is possible to know that the operator is applying an excessive load to the gripping part 4. Immediately stops applying any more load to the gripping portion 4, so that no more load than necessary is applied to the working portion 3.

  That is, the cutting blade portion 8 provided in the opposing holding portion 7 serving as the working portion 3 is not subjected to a load exceeding the wear and tear limit, and the cutting blade portion 8 is not damaged and is not broken. Since the service life of the manual work tool can be extended, it becomes a one-hand-grip manual work tool that is excellent in economy.

  In addition, when it is not desired to apply a very large load to the workpiece 9 such as when a delicate work or a soft object is sandwiched or cut, the bending portion 5 is similarly applied with a load smaller than the above-described load. It is preferable to use a one-hand-grip manual work tool having a bending configuration. For example, the configuration of the one-hand grip-type manual work tool other than the bending portion 5 is the same as that described above, and the thinnest portion of the bending portion 5 is used. If the thickness of the gripping part 4 is set to 1.5 mm and the bending degree of the gripping part 4 is set to 2.4 mm / kgf, a load of 5 kgf is applied to the gripping part 4 as shown in the third embodiment in FIG. When added, the bending movement amount of the gripping portion 4 is about 12 mm, and even when a load of 2 kgf is applied, the bending movement amount is about 5 mm. Therefore, the gripping portion 4 bends even at a very small load. Can easily grasp , It is possible to feel by hand the elastic force generated by the deflection, to subtly adjust the load applied to the grip portion 4 also a practicality excellent hand grip type hand work tool can be easily.

  Similarly to the above, for example, if the thickness of the thinnest portion of the bending portion 5 is set to 2.0 mm and the degree of bending of the gripping portion 4 is set to 1.3 mm / kgf, the first portion in FIG. As shown in the second embodiment, when a load of 15 kgf is applied to the gripping part 4, the bending movement amount of the gripping part 4 is about 20 mm, and when a load of 10 kgf is applied, the bending movement amount is about 13 mm. In this way, working with a one-hand gripping manual work tool that matches a desired load in accordance with the hardness of the workpiece 9 and the processing content, that is, a one-hand gripping manual operation that can apply an optimum load. By working with the work tool, the load applied to the work piece 9 is not more than necessary, and the work piece 9 is not damaged or damaged. It becomes a type manual work tool.

  Further, in this embodiment, the bending portion 5 is provided in the gripping portion 4, and the entire gripping portion 4 is bent inward by elastic deformation of the bending portion 5, but for example, the bending portion 5 When the gripping part 4 is set to a predetermined degree of bending without applying a load and a load is applied to the gripping part 4, any part of the gripping part 4 starts from the same point as in this embodiment. Any configuration that exhibits the effect can be adopted as appropriate.

  Further, as shown in FIG. 8, as a configuration in which only one of the first half 1 and the second half 2 is provided with a configuration in which the flexible portion 5 and the gripping portion 4 are bent at an arbitrary position. As compared with the case where both of the first half 1 and the second half 2 are bent, the amount of bending is doubled when only one of them is bent. It will be possible to feel the elastic force generated by the hand.

  Furthermore, it is good also as a structure from which the thickness of each bending part 5 of the 1st half 1 and the 2nd half 2 is varied, and the bending degree of the holding part 4 differs.

  Further, in this embodiment, the operator puts a finger on one gripping portion 4 of the first half 1 and the second half 2 and the gripping portion of the other second half 2 or the first half 1. Although a one-hand-grip manual work tool having a general size for gripping operation while grasping the grip portion 4 with one hand in a state where the palm is in contact with the palm 4 has been described. Hold the thumb with one of the half body 1 and the second half body 2 and hold the fingertip of the other finger against the other second half body 2 or the first half body 1, Single-hand-grip manual work tool with excellent operability that can perform even finer work by using the same configuration for precision work tools that can be operated by pinching and moving between the fingertip and the fingertip. It becomes.

  Further, when the gripping part 4 is operated while being held between the fingertips as described above, the fingertip locking part 11 having a shape in which the distal end side of the gripping part 4 is bent outward may be provided.

  Specifically, as shown in FIGS. 9 and 11, the pair of gripping portions 4 are configured in a bell shape in front view, and the fingertips are brought into contact (hooked) with the fingertip locking portions 11 so as to be further clamped. One-handed hand-operated manual operation that is easy to operate and practical even when the one-handed hand-operated manual work tool is operated vertically or horizontally. It becomes a tool.

  Further, for example, when the opposing sandwiching portion 7 forming the working unit 3 of the present embodiment is configured as a pliers, the opposing sandwiching portion 7 is formed in addition to the general tip shape of the pliers as shown in FIGS. As shown in FIGS. 10 and 11, the shape of the opposing sandwiching portion 7 is formed in a curved shape having a curved portion 12 from the tip portion to the pivoting portion 10, that is, even when the tip portion is in a contact state. A shape in which the inner side surface between the front end portion of the opposing sandwiching portion 7 and the pivoting portion 10 is in a non-contact state, specifically, for example, a shape like tweezers, and a predetermined force is applied to the bending portion 12. By using a structure that bends at the same time, it is possible to reduce the clamping force of the working unit 3, and to realize a groundbreaking one-hand-grip manual work tool excellent in practicality that can perform a more delicate gripping work. Become.

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

DESCRIPTION OF SYMBOLS 1 1st half body 2 2nd half body 3 Working part 4 Gripping part 5 Deflection part 6 Force point part 7 Opposing clamping part 8 Cutting blade part

Claims (8)

  The metal first half and the metal second half are pivotally mounted, and a working part that opens and closes is provided at one end of each, and a gripping part that is gripped is provided at the other end. The part is squeezed with one hand in a state where a finger is placed on one of the first half and the second half and a palm is in contact with the other second half or the first half. Or with the thumb in contact with one of the first half and the second half and the fingertip of the other finger in contact with the other second half or the first half A metal one-hand-grip manual work tool for performing a cutting work or a gripping work by closing the working part, and providing a bending part on the proximal end side of the gripping part, The flexure is raised when the gripping part is gripped with one hand, or when it is sandwiched and moved between the thumb and the fingertips of the other fingers and a load exceeding the specified load is applied. The grip portion is configured to gradually bend inward, and the grip portion is configured to be able to grasp the force applied to the grip portion by bending the grip portion. One-hand-grip manual work tool.   When any load in the range of 5 kgf to 30 kgf is applied to the gripping portion, each gripping portion bends and moves inward, and the gripping portion of the first half and the gripping portion of the second half 2. The one-hand-grip type manual work tool according to claim 1, wherein the facing distance between the gripping portion and the gripping part is set to be 10 mm to 20 mm narrower than the facing distance before the bending movement.   The bending portion is formed such that the gripping portions of the first half and the second half are curved, and the gripping portions are disposed outside the first half and the second half. When pivotally attached so as to have a convex curved shape, a point where the load of the curved gripping part is applied is a power point part, and any load in the range of 5 kgf to 30 kgf is applied to the gripping part In addition, the respective force point portions bend and move inwardly, and the facing interval between the force point portion of the first half and the force point portion of the second half is 10 mm to 20 mm narrower than the facing interval before the bending movement. The one-hand-grip type manual operation tool according to claim 1, wherein the one-hand-grip type manual work tool is set to have a shape as follows.   The gripping portion is provided with the flexible portion gradually becoming thinner from the base end portion of the gripping portion to the power point portion, from the base end portion of the gripping portion toward the power point portion, When the load is applied to the force application part, the gripping part gradually bends, and the starting point of bending when the gripping part is bent is from the force application part side to the base end part side of the gripping part. The one-hand-grip type manual work tool according to any one of claims 1 to 3, wherein the hand-held hand-operated work tool is configured to move.   The metal first half and the metal second half are pivotally mounted, and a working part that opens and closes is provided at one end of each, and a gripping part that is gripped is provided at the other end. The part is squeezed with one hand in a state where a finger is placed on one of the first half and the second half and a palm is in contact with the other second half or the first half. Or with the thumb in contact with one of the first half and the second half and the fingertip of the other finger in contact with the other second half or the first half By doing so, it is a metal one-hand-grip manual work tool that performs the cutting work or the gripping work by closing the working part, and the gripping part has a gripping part in a range of 5 kgf to 20 kgf. The degree of bending when a load is applied is set to a shape in the range of 0.5 mm / kgf to 2.6 mm / kgf, and the gripping portion is bent. Hand grip type hand work tool, characterized in that the operator is configured to grasp a force which in addition to the gripping portion by the.   The metal first half and the metal second half are pivotally mounted, and a working part that opens and closes is provided at one end of each, and a gripping part that is gripped is provided at the other end. The part is squeezed with one hand in a state where a finger is placed on one of the first half and the second half and a palm is in contact with the other second half or the first half. Or with the thumb in contact with one of the first half and the second half and the fingertip of the other finger in contact with the other second half or the first half Thus, a metal one-hand grip-type manual operation tool that performs a cutting operation or a gripping operation by closing the working portion, and when the load of 5 kgf is applied to the gripping portion, Is either 5mm to 15mm, or the gripping part is 10mm when a load of 20kgf is applied to the gripping part. Hand grip type hand work tool, characterized by being configured to be either deflection movement amount in the range of 20 mm.   The degree of flexure is determined by forming the gripping portions of the first half and the second half into a curved shape, and using a portion where the load of the curved gripping portion is applied as a force point portion. 7. A bending movement amount per unit load in which each of the power point portions of the first half and the second half moves inward when a load is applied to the holding portion. The one-hand holding type manual operation tool according to any one of the above.   The working part is formed by forming a cutting blade part on the opposing holding part, and gripping with one hand or grasping or moving between the thumb and another fingertip, thereby closing the working part to perform cutting work. The one-hand grip-type manual work tool according to any one of claims 1 to 7, wherein the one-hand grip-type manual work tool is configured to perform the above.

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