JP2004042147A - Tweezers - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide tweezers which is surely positioned and supported by applying a hand and fingers, and superior in convenience in use. <P>SOLUTION: A pair of finger pads 2 are respectively installed on a pair of sandwiching legs 1. The respective finger pads 2 are composed of vertical installing pieces 3 installed on an outside surface of the respective sandwiching legs 1 and horizontal wing pieces 4 extending outside from the lower end of the installing pieces 3. The installing pieces 3 of the respective finger pads 2 are rotatably installed on the respective sandwiching pieces 1 via a horizontal shaft 5. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to tweezers suitable for gripping small parts when assembling a precision machine or the like.
[0002]
[Prior art]
Conventional examples of this kind of tweezers include Japanese Utility Model Publication No. 41-2079, Japanese Utility Model Application Laid-Open No. 61-184662, Japanese Utility Model Application Laid-Open No. 3-40068, Japanese Utility Model Application No. 4-77253, Japanese Utility Model Publication No. 1-194040, and the like. is there.
[0003]
In these conventional examples, a fingertip stopper is provided on the pincer of the tweezers, and the fingertip is passed through the fingertip stopper, thereby positioning and holding the pincer of the tweezer with respect to the finger, and thereby, the pair of pincers Small parts can be grasped at the tip.
[0004]
[Problems to be solved by the invention]
However, in each of the conventional examples, since the fingertip of the worker is passed through the fingertip stopper, the fingertip stopper cannot fully respond to the size and movement of the fingertip, and there are problems such as feeling of pressure on the fingertip. Was.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a tweezer that can reliably position and hold a handle portion of a pair of pinching legs, does not have any resistance at fingertips, and does not cause fatigue on fingers and wrists even when gripping fine parts for a long time. Is to provide.
[0006]
[Means for Solving the Problems]
In the tweezers of the present invention, a pair of finger rests 2 are respectively mounted on a pair of sandwiching legs 1, and each finger rest 2 is attached to a vertical attachment piece 3 attached to a side surface of each of the sandwiching feet 1, and an attachment piece 3. And a horizontal wing piece 4 extending outward from one of the upper and lower ends. Each finger pad 2 can be formed of synthetic rubber or soft synthetic resin.
[0007]
The mounting piece 3 of each finger pad 2 is rotatably mounted on each of the sandwiching legs 1 via a horizontal shaft 5. More specifically, a horizontal shaft 5 is integrally formed on the inner surface of the attachment piece 3 of each finger pad 2, and a hole 7 is formed in each pinch leg 1 so as to penetrate therethrough. Each of the finger pads 2 is attached to the outer surface 1a of each of the clipping legs 1 by fitting the mounting piece 3 into the hole 7 so as to prevent the finger shaft 2 from coming off. It is attached rotatably via.
[0008]
Operation and Effect of the Invention
According to the present invention, since the wings 4 of each finger rest 2 extend outward of each of the pinching legs 1, the work is performed by applying the fingertips of the operator to the mounting pieces 3 and particularly to the wings 4. The whole of the tweezers can be securely positioned and held in the hands of the person. In this case, since the fingertip of the worker is not passed through each finger pad 2, the fingertip of the worker can be handled regardless of the size of the fingertip, and the movement of the fingertip is not restricted. Therefore, there is an advantage that a manual operation for grasping a small part for a long time does not cause fatigue.
[0009]
If the finger pad 2 is made of synthetic rubber or soft synthetic resin, the finger pad 2 can be elastically deformed by following the shape of the operator's fingertip or delicate movement. You can always fit soft.
[0010]
In addition, when the attachment piece 3 of each finger pad 2 is rotatably attached to each pinching leg 1 via the horizontal shaft 5, the finger pad 2 is suitable for the shape and size of the operator's fingertip. Since it can be set at the mounting angle, the whole of the tweezers can be firmly and stably supported by fingers, and the work of grasping small parts can be performed smoothly without any discomfort.
[0011]
At this time, the horizontal shaft 5 is integrally protruded from the inner surface of the attachment piece 3 of each finger pad 2, and the horizontal shaft 5 is fitted into and engaged with the hole 7 provided in each of the pinching legs 1 in a retaining shape. According to the structure in which each finger rest 2 is rotatably attached to the sandwich leg 1 via the horizontal axis 5, each finger rest 2 can be easily attached to each sandwich leg 1 with the minimum necessary number of members. Has advantages.
[0012]
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The drawing shows an embodiment of the tweezers according to the present invention, which has a pair of left and right stainless steel plate sandwiching legs 1.1, and both of the sandwiching legs 1.1 are spot-welded at the rear ends under joining. ing. Each of the pinching legs 1 has a stainless steel plate coated entirely with a polyethylene tetrafluoride resin, and is subjected to surface processing so that even if an adhesive sealing material or the like is adhered, it is easily peeled off.
[0013]
The rear half of each of the clipping legs 1 is vertically wide and wide, and the distal end side is formed in a sharp shape. A substantially central portion of each of the clipping legs 1 in the longitudinal direction is a handle portion. A pair of left and right finger pads 2 are mounted on the handle. The mounting site of the finger pad 2 on each of the pinching legs 1 is wide vertically.
[0014]
Each finger pad 2 is a molded product of synthetic rubber or soft synthetic resin, and is integrally formed with a vertical mounting piece 3 along the outer side surface 1a of each pinching leg 1 from the lower end of the mounting piece 3 to the lateral outside. And a horizontal wing piece 4 which is formed so as to protrude into an L-shape.
[0015]
Each finger rest 2 has a mounting piece 3 rotatably mounted on each pinching leg 1 via a horizontal shaft 5.
[0016]
That is, a circular boss 6 is formed at the handle portion of each of the pinching legs 1 on the outer side surface 1a, and an oval hole 7 long in the front-rear direction is provided at the center of the boss 6 so as to penetrate. A circular recess 9 is formed around the hole 7 on the inner surface of the hand portion. The recess 9 is formed simultaneously when the circular boss 6 is stamped outward.
[0017]
On the other hand, a circular inner recess 10 is provided on the inner surface of the mounting piece 3 of each finger rest 2 near the upper portion, and the horizontal shaft 5 is integrally provided at the center of the inner recess 10. The abscissa 5 is formed in a mushroom shape with an enlarged tip, a narrow neck portion 5a is formed in a round shaft shape, and a tip portion 5b is formed in an oval shape that is long in the vertical direction.
[0018]
Specifically, in a pair of tweezers having a front-rear length of 123 mm for each pinching leg 1, a circular boss 6 having a protrusion amount of 1 mm is provided at a position 67 mm forward from the rear end, and the boss 6 has a vertical width. A hole 7 having a length of 3 mm and a length of 6 mm on the left and right sides was provided.
[0019]
On the other hand, the attachment piece 3 of each finger pad 2 has a thickness of 2.5 mm, a maximum height from the lower surface of the wing piece 4 of 22.5 mm, a front-rear width of 18 mm, and a width of 12.5 mm from the lower end. The center of the axis 5 was set, the diameter of the narrow neck 5a of the horizontal axis 5 was set to 3 mm, and the front and rear width of the tip 5b was set to 3 mm, and the vertical length was set to 6 mm. The wings 4 of each finger pad 2 were set to have a thickness of 2.5 mm, a front-rear width of 18 mm, and a maximum lateral protrusion amount from the inner surface of the mounting piece 3 of 21 mm.
[0020]
When attaching each finger rest 2 to each of the sandwiching legs 1, as shown in FIG. 1, the attachment piece 3 of each finger rest 2 is applied to the circular boss 6 of each of the sandwiching legs 1 in an orthogonal state, and At the same time as the inner recess 10 is fitted, the tip 5b of the horizontal axis 5 of the mounting piece 3 is fitted into and engaged with the hole 7 of the circular boss 6, and the wing piece 4 applies the finger rest 2 to each of the pinching legs 1. Turn it to the lower position. Thus, the distal end portion 5b of the horizontal shaft 5 is received by the inner peripheral edge of the opening around the hole 7 in the recess 9 of each pinch leg 1.
[0021]
In other words, each finger pad 2 is attached to each pinching leg 1 via the horizontal axis 5 in a retaining shape, but is rotatable around the horizontal axis 5. In this mounting use state, the lower surface of the wing piece 4 located below projects from the lower end edge of the pinching leg 1.
[0022]
FIG. 4 shows a typical use example of the tweezers according to the present invention. In this case, the abdomen of the thumb is struck from above on the outer surface of the attachment piece 3 of the one finger pad 2 and the upper surface of the wing piece 4, and the abdomen of the index finger is attached from above to the attachment piece of the other finger pad 2. The upper and lower surfaces of the wing pieces 4 and 4 of the two-finger contact 2.2 are received by the middle finger and the tweezers are held by three fingers. At this time, each finger pad 2 is rotated about the horizontal axis 5 so as to have a good attachment angle with respect to each pinch leg 1.
[0023]
FIG. 5 shows another example of the use of tweezers, in which the thumb and the index finger are turned upside down so that the thumb and the index finger straddle the mounting piece 3 and the wing piece 4 of each finger rest 2 from below, so that the thumb and the index finger can be put together. She holds the tweezers between her index finger.
[0024]
FIG. 6 shows still another example of using tweezers. In this case, the wing piece 4 of one finger pad 2 is set to the lower side and the wing piece 4 of the other finger pad 2 is set to the upper side with respect to both pinching legs 1.1. One finger rest 2 is sandwiched between the thumb and the middle finger from above and below, and the other finger rest 2 is received by the index finger.
[0025]
With the tweezers of the present invention, as can be seen from the above-mentioned typical usage examples, the right and left hands are used to make the two-finger rest 2.2 convenient for the operator's finger according to the preference of the operator. The angle can be adjusted as described above, and the delicate contact with the movement of the fingertip can be finely adjusted with the elasticity of each finger pad 2 with a flexible fit feeling.
[0026]
In the illustrated example, the dimensions of the hole 7 and the narrow neck portion 5a are set so that the posture of each finger rest 2 with respect to each pinching leg 1 can be secured regardless of the mounting angle. Each finger pad 2 may be supported on the leg 1 in a free rotation state (wobble state).
[0027]
Each finger rest 2 may be riveted to each pinch leg 1 by a separate member, and the rivet may be the horizontal axis 5 of the present invention.
[Brief description of the drawings]
1 is an exploded perspective view of the whole; FIG. 2 is a front view, a rear view, a right side view, a plan view, and a bottom view of tweezers; FIG. 3 is an end view taken along the line AA in the front view of FIG. FIG. 5 is a perspective view showing a typical use example. FIG. 5 is a perspective view showing another use example. FIG. 6 is a perspective view showing another use example.
DESCRIPTION OF SYMBOLS 1 Nipping leg 1a Outer side surface 2 Finger contact 3 Mounting piece 4 Wing piece 5 Horizontal axis 5a Thin neck 5b Tip 6 Circular boss 7 Hole 9 Depression 10 Inner depression

Claims (4)

A pair of finger rests 2 are mounted on a pair of pincer legs 1, respectively.
Each finger pad 2 comprises a vertical mounting piece 3 attached to the side surface of each pinching leg 1 and a horizontal wing piece 4 extending outward from one of upper and lower ends of the mounting piece 3. And tweezers. The tweezers according to claim 1, wherein each finger pad (2) is formed of synthetic rubber or soft synthetic resin. The tweezers according to claim 2, wherein the mounting pieces (3) of each finger pad (2) are rotatably mounted on each of the holding legs (1) via a horizontal shaft (5). On the inner surface of the mounting piece 3 of each finger pad 2, a horizontal shaft 5 is integrally provided to protrude.
A hole 7 is formed in each pinching leg 1 in a penetrating manner,
By attaching the mounting piece 3 of each finger pad 2 to the outer side surface 1a of each pinching leg 1, the horizontal shaft 5 is fitted and engaged with the hole 7 in a retaining shape.
The tweezers according to claim 3, wherein each finger pad (2) is rotatably attached to each pinching leg (1) via a horizontal shaft (5).

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