JP3430413B1 - tweezers - Google Patents

Abstract

An object of the present invention is to obtain easy-to-use tweezers that can be securely positioned and supported by attaching fingers. SOLUTION: A pair of finger rests 2 are mounted on a pair of sandwiching legs 1, respectively. Each finger pad 2 is composed of a vertical mounting piece 3 attached to the outer surface of each pinching leg 1 and a horizontal wing piece 4 extending outward from the lower end of the mounting piece 3. The mounting piece 3 of each finger pad 2 is rotatably mounted on each of the clipping legs 1 via a horizontal shaft 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to tweezers suitable for grasping small parts when assembling precision machinery and the like.

[0002]

2. Description of the Related Art As a conventional example of this type of tweezers, see
No. 1-2079, No. 61-184662, No. 3-40068, No. 4-7725
3 and Japanese Utility Model Publication No. 19440.

In these conventional examples, the pinching legs of the tweezers are provided with fingertip stoppers, and by inserting the fingertips through the fingertip stoppers, the pinching legs of the tweezers are positioned and held with respect to the fingers, and thus a pair of fingers is provided. The tips of the clip legs allow you to grab small parts.

[0004]

However, in all of the conventional examples, since the operator's fingertips are passed through the fingertip stoppers, the fingertip stoppers cannot cope with the size and movement of the fingertips, and the fingertips are pressed. Some problems such as feelings were recognized.

Therefore, an object of the present invention is to reliably position and hold the handle portions of the pair of sandwiching legs, to have no feeling of resistance at the fingertips, and to feel tiredness of fingers and wrists even for a long time for grasping fine parts. To provide tweezers without.

[0006]

The tweezers of the present invention are
A pair of finger rests 2 are attached to the pair of sandwich legs 1, and each finger rest 2 is attached to the side surface of each sandwich leg 1 from a vertical attachment piece 3 and from one upper and lower end sides of the attachment piece 3. It is characterized in that it is composed of a horizontal wing piece 4 extending outward. Each of the finger pads 2 can be made of synthetic rubber or soft synthetic resin.

The attachment piece 3 of each finger pad 2 is rotatably attached to each sandwich leg 1 via a horizontal shaft 5. Specifically, a horizontal shaft 5 is integrally formed on the inner surface of the attachment piece 3 of each finger rest 2, and a hole 7 is formed in each sandwich leg 1 in a penetrating manner. Outer side surface 1a of each leg 1 sandwiching the mounting piece 3
The finger rests 2 are rotatably attached to the sandwich legs 1 via the horizontal shafts 5 by engaging the horizontal shafts 5 in the holes 7 so as to prevent them from slipping off.

[0008]

According to the present invention, since the wing pieces 4 of each finger rest 2 extend to the outside of each sandwich leg 1, the attachment piece 3 is attached.
By placing the fingertip portion of the operator on the wing piece 4, and in particular, the entire tweezers can be accurately positioned and held in the operator's hand. Since there is no form in which the operator's fingertip is passed through each finger rest 2, it is possible to deal with the operator regardless of the size of the finger and the movement of the fingertip is not restricted. Therefore, there is an advantage that the user does not feel tired even when manually gripping the small parts for a long time.

When the finger rest 2 is formed of synthetic rubber or soft synthetic resin, the finger rest 2 can be elastically deformed by following the shape and subtle movement of the operator's fingertip, so that the operator's finger is placed on the finger rest. It can always be softly fitted to 2.

When the attachment piece 3 of each finger rest 2 is rotatably attached to each sandwich leg 1 via the horizontal shaft 5, the finger rest 2 is adjusted according to the shape and size of the operator's fingertip. Since the tweezers can be set at a suitable mounting angle, the whole tweezers can be firmly and stably supported by fingers, and the work of grasping small parts can be smoothly performed without any discomfort.

At that time, the horizontal shaft 5 is integrally projected on the inner surface of the mounting piece 3 of each finger rest 2, and the horizontal shaft 5 is provided in the hole 7 formed in each sandwich leg 1.
According to the structure in which the finger rests 2 are rotatably attached to the sandwich legs 1 through the horizontal shaft 5 by engaging and engaging with each other in a slip-off preventive manner, the sandwich legs can be formed with the minimum necessary number of members. 1 has the advantage that each finger rest 2 can be easily attached.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of tweezers according to the present invention, which has a pair of left and right pinching legs 1.1 made of stainless steel plate, and both pinching legs 1.1 are rear end portions. Are spot welded under the joint. Each sandwiching leg 1 is entirely coated with a polyethylene tetrafluoride resin on a stainless steel plate, and is surface-treated so that it can be easily peeled off even if an adhesive sealing material or the like is attached.

In each clip leg 1, the rear half portion is wide in the vertical direction and the tip side is formed in a sharp shape, and the substantially central portion of each clip leg 1 in the front-rear longitudinal direction serves as a handle portion. A pair of left and right finger rests 2 and 2 are attached to the handle portion. The mounting portion of the finger rest 2 on each of the sandwich legs 1 is wide in the vertical direction.

Each finger pad 2 is a molded product of synthetic rubber or soft synthetic resin, and has a vertical mounting piece 3 along the outer surface 1a of each sandwiching leg 1 and a lateral outer side from the lower end of the mounting piece 3. It has an L-shape that is composed of a horizontal wing piece 4 that is integrally projected toward the wing piece 4.

Each finger rest 2 has a mounting piece 3 rotatably attached to each sandwich leg 1 via a horizontal shaft 5.

That is, the handle portion of each sandwich leg 1 is
A circular boss 6 is projectingly formed on the outer side surface 1a, an oval hole 7 elongated in the front-rear direction is provided at the center of the boss 6, and a circular recess around the hole 7 is formed on the inner surface of the handle portion. 9 is formed. The recess 9 is formed at the same time when the circular boss 6 is stamped outward.

On the other hand, a circular inner concave portion 10 is provided on the inner surface of the mounting piece 3 of each finger pad 2 near the upper portion, and the inner concave portion 10 is formed.
A horizontal shaft 5 is integrally projected at the center of the. The abscissa 5 is formed in a mushroom shape with its tip enlarged in diameter, the narrow neck portion 5a is formed in a round shaft shape, and the tip portion 5b is formed in an oval shape elongated in the vertical direction.

Specifically, the front-back length of each sandwich leg 1 is 12
In the 3 mm tweezers, a circular boss 6 having a protrusion amount of 1 mm was provided at a portion 67 mm forward from the rear end of the tweezers, and the boss 6 was provided with a hole 7 having a vertical width of 3 mm and a lateral length of 6 mm.

On the other hand, the attachment piece 3 of each finger pad 2 has a thickness of 2.
5 mm, the maximum height from the lower surface of the wing piece 4 is 22.5 mm, the front-rear width is 18 mm, the center of the horizontal axis 5 is set at a height position of 12.5 mm from the lower end, and the narrow neck portion 5a of the horizontal axis 5 is set. The diameter of 3mm,
The front end portion 5b has a front-rear width of 3 mm and a vertical length of 6 mm. The wing piece 4 of each finger rest 2 has a thickness of 2.5 mm, a front-back width of 18 mm, and a maximum lateral protrusion amount from the inner surface of the mounting piece 3 of 21 mm.
mm respectively.

When attaching the finger rests 2 to the clip legs 1, as shown in FIG. 1, the attachment pieces 3 of the finger rests 2 are attached to the circular bosses 6 of the clip legs 1 in an orthogonal state and attached to the circular bosses 6. At the same time as fitting the inner recessed portion 10 of the piece 3, the distal end portion 5b of the horizontal shaft 5 of the mounting piece 3 is fitted and engaged in the hole 7 of the circular boss 6,
Rotate each finger pad 2 with respect to each clip leg 1 so that the wing piece 4 is located below. Thus, the tip portion 5b of the horizontal shaft 5 is received in the inner peripheral edge portion of the opening around the hole 7 in the recess 9 of each sandwich leg 1.

That is, each finger pad 2 is attached to each pinch leg 1 on the horizontal axis 5
It is attached so as to prevent it from slipping off, but rotatably around the horizontal shaft 5. In this installed and used condition,
The lower surface of the blade piece 4 located below protrudes from the lower end edge of the sandwich leg 1.

FIG. 4 shows a typical use example of the tweezers according to the present invention. In this case, the ventral side of the thumb is applied from above to the outside surface of the attachment piece 3 of the one finger pad 2 and the upper surface of the wing piece 4, and the ventral side of the index finger is attached from above to the attachment piece of the other finger support 2. Straddle the outer surface of 3 and the upper surface of the winglet 4,
Use the middle finger to receive the lower surface of the wing pieces 4.4 of both finger rests 2.2.
I'm holding tweezers with my three fingers. At this time, each finger rest 2 is pivotally operated about the horizontal shaft 5 with respect to each sandwich leg 1 so that the attachment angle is such that a finger can be attached well.

FIG. 5 shows another example of using the tweezers. The tweezers are turned upside down so that the thumb and the forefinger are applied from below to the attachment piece 3 and the wing piece 4 of each finger rest 2. , I'm holding tweezers between my thumb and forefinger.

FIG. 6 shows another example of using tweezers. With this, one finger pad 2 for both sandwiched legs 1.1
Is set so that the winglet 4 is located below, and the other finger rest 2 is set so that the winglet 4 is located above. The 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.

The tweezers of the present invention, as can be seen from the above-mentioned typical use example, can be placed on both the right and left hands according to the operator's preference with both finger rests 2 and 2, which are convenient for the operator's fingers. The angle can be adjusted to suit the condition, and the delicate contact condition caused by the movement of the fingertip can be finely adjusted by the elasticity of each finger pad 2 with a flexible fit feeling.

In the illustrated example, the dimensions of the hole 7 and the narrow neck portion 5a are set so that the postures of the finger rests 2 with respect to the sandwich legs 1 can be ensured at any attachment angle. The finger rests 2 may be supported by the sandwiching legs 1 in a freely rotating state (dangle state).

Each finger rest 2 on each sandwich leg 1 may be riveted by a separate member, and the rivet is the horizontal shaft 5 of the present invention.
May be.

[Brief description of drawings]

FIG. 1 is an overall exploded perspective view

FIG. 2 is a front view, a rear view, a right side view, a plan view, and a bottom view of the tweezers.

FIG. 3 is an end view taken along the line AA in the front view of FIG.

FIG. 4 is a perspective view showing a typical usage example.

FIG. 5 is a perspective view showing another usage example.

FIG. 6 is a perspective view showing still another usage example.

[Explanation of symbols]

1 sandwich leg 1a outer surface 2 finger rest 3 mounting pieces 4 wings 5 Horizontal axis 5a narrow neck 5b tip 6 circular boss 7 holes 9 dents 10 Inner recess

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 50-600 (JP, U) Rikai Hei 3-40068 (JP, U) Rikai 58-140055 (JP, U) Real Ko 41- 2079 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) B25B 9/00

Claims (2)

(57) [Claims] 1. A pair of sandwiching legs 1 are made of synthetic rubber or soft material.
A pair of finger pads 2 made of synthetic resin are attached, and each finger pad 2 has a vertical mounting piece 3 along the outer side surface 1a of each clip leg 1 and one upper and lower end sides of the mounting piece 3. From sideways outward
And has an L-shape composed of a horizontal wing piece 4 formed integrally with each other, and a handle portion of each clip leg 1 has a circular outer surface 1a.
The boss 6 is formed to project, and the center of the circular boss 6 is
An oval-shaped hole 7 that is long in the direction is provided in a penetrating manner, and on the inner surface of the handle portion of each sandwich leg 1, around the hole 7.
A circular recess 9 is formed , and a circular inner recess 10 is formed on the inner surface of the attachment piece 3 of each finger rest 2.
Is provided, and the horizontal shaft 5 integrally projects at the center of the inner recessed portion 10.
The horizontal axis 5 is formed into a mushroom shape with a large diameter tip,
5a is formed in the shape of a round shaft, and the tip portion 5b is vertically long.
It is formed in an oval shape, and the mounting piece 3 of each finger rest 2 is orthogonal to the outer side surface 1a of each sandwiching leg 1.
In this state, the inner recess 10 of the mounting piece 3 is attached to the circular boss 6.
Simultaneously with the fitting, the tip portion 5b of the horizontal shaft 5 is attached to the hole 7
Each finger rest 2 against each sandwich leg 1 and wing piece 4
By rotating so that they are positioned below or above, each finger pad 2 is attached to each pinch leg 1 through the horizontal shaft 5 so as not to come off.
But rotatably mounted around the horizontal axis 5.
Tweezers, characterized in that there. 2. The outer surface 1a of the handle portion of each clip leg 1
Has a circular boss 6 formed by a stamping process, and a circular recess 9 is formed on the inner surface of the handle portion of each sandwich leg 1.
Simultaneously when punching the shaped boss 6 outward
The tweezers according to claim 1, which is formed on the .