JP2008200784A - Tweezers - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide tweezers which always maintains tip portions thereof in a fresh condition without errors, abrasion, or distortion. <P>SOLUTION: The tweezers have a bifurcated tweezers main body 4 having the tip portions 4a elastically accessible to/separable from each other, and a pair of gripping cutting edges 8 detachably attached to the tip portions of the tweezers main body, for pinching and gripping an object. Each gripping cutting edge has formed therein a single or a plurality of folding grooves in a manner crossing a longitudinal direction of the gripping cutting edge in order to snap off the tip portion of the gripping cutting edge. Thus the tip portion can be always maintained in a fresh condition without errors, abrasion, or distortion. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to tweezers used when an object such as a fine sample is sandwiched and collected.

  In general, in the field of semiconductor integrated circuits, tweezers are used when handling semiconductor wafers, ICs (integrated circuits), or other fine samples, because the objects to be handled are very small. . Further, for example, Patent Document 1 discloses a tweezers whose tip portion can be replaced in accordance with the size of an object handled by tweezers.

  When a fine object is sandwiched and collected (picked) with this type of tweezers, the accuracy of the cusp at the tip is important. For example, the sharper the tip of the tweezers is, the more effective for a smaller fine object, and the easier it is to collect. In addition, the degree of fitting between the paired tip parts affects the adhesion at the contact surface with respect to the object, and the smaller the error or misalignment at the tip part, the more securely the object is sandwiched and gripped. can do.

Japanese Patent Laid-Open No. 5-29444

  By the way, as the frequency of use of the tweezers increases, it is unavoidable that the tip portion is worn or distorted, and the tip portion is gradually dulled, and it tends to become difficult to pick up the target object.

  In this case, the tip can be repaired by polishing or the like, but this repair requires not only a certain degree of skill and skill because the shape and dimensions of the tip is very small, There was a problem that indirect materials such as repair time and abrasive paper were required. For example, when the object has a size of about several tens of micrometers, expensive polishing paper of about # 5000 is required, and cost is also required.

  The present invention has been devised to pay attention to the above problems and to effectively solve them. An object of the present invention is to provide a tweezers capable of maintaining a tip portion in a new state in which no error, wear, or distortion is always generated.

  The invention according to claim 1 is a bifurcated tweezers body whose tip is elastically movable toward and away from the tweezers, and is detachably provided at the tip of the tweezers so as to sandwich and hold an object. In the tweezers having a pair of gripping blade tips, the gripping blade tip has one or a plurality of folding grooves so as to intersect with the longitudinal direction of the gripping blade tip in order to be able to fold the tip portion of the gripping blade tip. The tweezers are characterized by being formed.

  According to the tweezers according to the present invention, the gripping blade tip is formed with one or a plurality of folding grooves so as to cross the longitudinal direction of the gripping blade tip so that the tip of the gripping blade tip can be folded. Therefore, if the most advanced portion of the gripping blade edge is folded at a stage where it is used to some extent, the tip portion can always be maintained in a new state in which no error, wear, or distortion occurs without repair.

Hereinafter, an embodiment of tweezers according to the present invention will be described in detail with reference to the accompanying drawings.
1 is a plan view showing a tweezers according to the present invention, FIG. 2 is a side view showing the tweezers, FIG. 3 is an enlarged perspective view including a disassembled state of A part in FIG. 1, and FIG. FIG. 5 is an enlarged view showing a portion B in FIG.

  As shown in FIGS. 1 and 2, the tweezers 2 has a bifurcated tweezers body 4 whose tip end side can be elastically approached and separated. The tweezer main body 4 is made of, for example, stainless steel, and has a shape suitable for being sandwiched between human hands and is elastically deformed in the direction indicated by the arrow 6.

  A pair of gripping blade edges 8 that characterize the present invention for sandwiching an object is detachably provided at the tip 4a of the bifurcated tweezers body 4. Specifically, as shown in FIG. 3, the gripping blade edge 8 has a predetermined length, and is attached to both tip portions 4 a of the tweezer main body 4 so as to be sandwiched between the pressing and fixing plates 10. It is done. At the time of fixing, screw holes 12 and 14 are formed in the pressing fixing plate 10 and the tip 4a of the tweezer main body 4, respectively, and screws 16 are inserted into the screw holes 12 and 14 from the outside and tightened. Is done. The screw 16 can be easily tightened and released by turning it with an operator's finger or a screwdriver, and the gripping blade edge 8 can be displaced to the tip side or easily replaced. It has become.

  The gripping blade edge 8 is formed in a plate-like shape, and as shown in FIGS. 4 and 5, the gripping blade edge 8 has one or a plurality of folding grooves so as to intersect with the longitudinal direction. 18 are formed in parallel at a predetermined interval so that each of the folding grooves 18 can be easily broken. Therefore, by applying a force to bend the front end side with the folding groove 18 as a fulcrum, the leading edge can be bent and indexed. In this case, the shape formed by each fold groove 18 and the side surface of the gripping blade edge 8 has a substantially rhombus shape so that the corners are acute in order to easily sandwich the object. Accordingly, the cut pieces 8a are substantially diamond-shaped as shown in FIG.

  In this case, although depending on the size of the object to be sandwiched, the width W1 of the gripping blade edge 8 is, for example, about 5 mm, and the pitch H1 of the folding grooves 18 is, for example, about 3 mm. The material of the gripping blade edge 8 is made of, for example, stainless steel.

  As described above, since the tweezers 2 of the present invention is formed, when the tip of the gripping blade tip 8 is worn or distorted and becomes dull as the object is sandwiched and used, the gripping blade tip 8 A force is applied so that the folding groove 18 at the most distal portion is bent as a fulcrum. Then, as shown in FIG. 5, the leading edge portion of the gripping blade edge 8 is cut along the folding groove 18 located at the leading edge, and the blunt portion is removed as a broken piece 8 a, The tip of the gripping blade tip 8 is in a state where no new wear or distortion has occurred.

  As described above, the gripping blade edge 8 is formed with one or a plurality of folding grooves 18 so as to intersect with the longitudinal direction of the gripping blade edge 8 so that the tip of the gripping blade edge 8 can be folded. Therefore, if the most advanced portion of the gripping blade edge 8 is folded after being used to some extent, the tip portion can always be maintained in a new state in which no error, wear or distortion has occurred without repair.

  If the tip end side of the gripping blade edge 8 is repeatedly indexed as described above and the gripping blade edge 8 becomes shorter, the screw 16 for tightening the pressing fixing plate 10 is loosened to shift the position of the gripping blade edge 8 toward the tip side. And fix it again. If the gripping edge 8 itself is finally shortened to the limit, it is replaced with a new gripping edge 8.

  Moreover, if various gripping blade edges 8 are prepared according to the material and shape of the object to be sandwiched, various forms of the object can be handled.

It is a top view which shows the tweezers which concern on this invention. It is a side view which shows tweezers. It is an expansion perspective view containing the decomposition | disassembly state of the A section in FIG. It is an expansion perspective view which shows the holding blade edge | tip of a tweezers. It is an enlarged view which shows the B section in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 ... Tweezers, 4 ... Tweezers main body, 4a ... Tip part, 8 ... Grasping blade edge, 8a ... Fragment, 10 ... Press fixing plate, 14 ... Screw hole, 16 ... Screw, 18 ... Folding groove.

Claims (1)

A bifurcated tweezers body, the tip of which can be elastically approached and separated;
A pair of gripping blade edges that are detachably provided at the tip of the tweezers body and sandwich and grip an object; and
In tweezers having
The tweezers are characterized in that one or a plurality of folding grooves are formed in the gripping blade edge so as to intersect with the longitudinal direction of the gripping blade edge so that the tip of the gripping blade edge can be folded.

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