JP3177001U - Pincers such as tweezers, hair cutters, and bone removers by powder injection molding (MIM, CIM) - Google Patents

Abstract

An object of the present invention is to provide a pinching tool such as tweezers, fish tweezers, tweezers, etc., in which an action part surely catches an object when pressed and acts reliably.
By forming the working end portion 2 formed by metal or ceramic powder injection molding, the stripe shape of the working portion, the biting portion, and the pressing portion of the finger are precisely formed in the shape of the abdomen of the finger. Combined with the molded product and the support end 3 formed with the urging part, it improves the fitting accuracy and prevents blurring, twisting, etc., and the action part surely captures the target object accurately, and it is made tweezers, tweezers, and water removal .
[Selection] Figure 4

Description

  The present invention relates to tweezers, hair cutting, bone removal, and the like.

Conventionally, there are tweezers that pull hairs, tweezers that cut hair near the tip, and tweezers that pinch fish bones. In any case, the ease of use is enhanced by increasing the alignment accuracy of the tips of the working parts facing each other.

Furthermore, the fact that the tip is not wobbled is an important factor for ease of use. Even if the tip alignment accuracy is good, if the tip is wobbled, it is difficult to properly capture and deal with the target. In addition, the operation unit to be operated is slippery and difficult to operate. Furthermore, it is easy to catch the target object reliably by adopting a structure in which the tip action part does not cover the hand.
Furthermore, when a place such as an ear hole or nose is used by groping, it is useful that the periphery of the action part is formed round without damaging the skin or mucous membrane.
Further, in removing the hair, when the thick hair is removed, the surface to be sandwiched can be surely removed if there is a step rather than a flat surface. In hair cutting, the accuracy of the blade surface is required. Conventional pressing and cutting are not suitable for uniform mass production and may be manual. In addition, from these facts, when accuracy is required, it becomes expensive.

Patent Document 1 discloses that “it has an upper clamping surface and a lower clamping surface that are formed on the front end sides of both gripping portions and abut against each other when they are closed to pinch hairs”.
In Patent Document 2, “a concave portion provided on a surface of each of the sandwiching portions facing each other;
It is comprised by each outer peripheral part of this recessed part ... ".

Patent Document 3 states that “the inner surface of the sandwiching portion (1a) is a planar sandwiching surface (3), and the inner surface of the fulcrum portion (1b) is a planar contact surface (4). (3) and the contact surface (4) are provided on the same plane,...
Patent Document 4 discloses a replaceable rubber tweezer.
However, there is no disclosure of a plurality of fine patterns on the sandwiching surface, a high-precision bite, a metal or ceramic powder injection molding, or a silicon rubber integrated with the action part.

Japanese Patent Publication No. 2007-82923 Registered Utility Model No. 3152070 Japanese Patent No. 4771234 Japanese Patent Publication No. 2005-131344

The present invention provides a precise pinch surface and bite by forming a precise pinch surface with MIM, and it is easy to handle, and it is easy to handle, even in places where it is difficult to see without damaging the skin surface. Provide tools that can be used with peace of mind. In addition, we provide a tool that quickly and reliably removes fish from bone without boring.

In order to solve the above-described problem, a pinching tool according to one aspect of the present invention is a pinching tool having a pair of opposing working portions at one end of a support portion, and the working portion is formed by a pair of metal or ceramic powder injection molding. It is the clip tool provided with the acting end part.
Further, a fitting portion in which a plurality of fine irregularities are formed on the inner surface of the action portion of the action end portion, and silicon rubber is molded and coated on the action portion of the action end portion. Alternatively, the action part of the action end part is provided with a meshing part where the action parts engage with each other, a neck part having a narrower base supporting the action part than the action part is provided, and a dent is provided on the side of the action end part. It is a pinch tool provided with a finger hook that is operated with a fingertip.
Further, the working end portion is extended to provide a biasing portion, and the biasing portion ends are joined and integrated with each other to provide a supporting portion, or the supporting end portion and the supporting portion have spring properties. And a support end provided with an urging portion formed of a plate-shaped metal or plastic resin, and a pinching tool in which the action end and the support end are connected.
Further, the planar shape of the working end is substantially U-shaped, the plate thickness of the urging portion of the supporting end is 0.3 mm or more and the width is 4 mm or more, and at least the inside of the working part around the tip It is a pinching tool that provides roundness with a radius of 0.2 or more, or a guide mechanism that guides and guides the action part to a pair of action parts, and guides engagement and biting of each action part.
Furthermore, the pinching tool is characterized in that the pinching tool is tweezers, bone removal, and the pinching tool is a hair cut.
Metal powder injection molding, Metal Injection Molding (hereinafter referred to as MIM), metal powder is kneaded with a binder so that it can be injection-molded like plastic, and after injection molding, the binder is removed by heating. Metal product processing to be sintered. If the feature is described, it is possible to manufacture a highly accurate and complicated shape, and it is suitable for small parts having a complicated shape. Since there is no post-process such as cutting, the processing time per piece is shortened, and it can be easily manufactured without post-processing such as horizontal and vertical holes, which is impossible in sintering and forging. Metal parts can be made in the same way as plastics and can be mass-produced uniformly.
On the other hand, in ceramic powder injection molding (hereinafter referred to as CIM), complex shaped ceramic products with excellent dimensional accuracy and productivity are possible as in metal injection molding.
However, on the other hand, the plate-like molded product by MIM and CIM has a drawback that an elastic (spring) effect cannot be expected.

  Since the tip is securely fitted, it can be surely tipped, trimmed and fished. In tweezers, thick hair can be caught reliably. In addition, it can be used with confidence even in areas where both tweezers and tweezers are not visible. With regard to fish tweezers, the thick bones can be removed without fail, and the body can be pulled out quickly and reliably without damaging the material.

It is a top view of Example 1 of the clip tool of the present invention. It is the top view and partial cross section figure of Example 2 of the pinching tool of this invention. It is the picked-up use state figure of Example 2 of the clip implement of this invention. It is the use condition figure which Example 2 of the pinching tool of this invention grasped. It is a top view of Example 3 of the clip tool of the present invention. It is a top view of Example 4 of the clip implement of this invention. It is a use condition figure of Example 4 of the clip implement of this invention. It is a top view of the modification of Example 2 of the clip implement of this invention.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows Example 1 of the pinching tool of the present invention. The clip 1 is formed by MIM or CIM and sintered, and the action end 2 is composed of the action part right 2e having the action part 25 sandwiching the hair at the tip and the action part left 2f, as shown in FIG. A joint end 3d obtained by extending the other end of the working end 2 is joined and integrated to form a support end 31. FIG. The action end portion 2 is provided with a finger hook portion 5 that has a recess between the action portion 25 and the support end portion 31 and supports the abdomen of the finger. The inside of the recess of the finger rest 5 is provided with a step so that the fingertip is not slippery and can be operated stably without having to apply an excessive force. Unlike conventional presses and cutting products, these are manufactured by MIM and CIM, so that a three-dimensional, little deformation and stable finger-hanging portion 5 can be configured.
The support end portion 31 is provided with a punched portion 2g to make the urging portion 3g of the sandwiching tool 1, thereby reducing the spring resilience strength. In this way, tweezers for pinching hair at the tip of the action portion 25 and tweezers for pinching fish bone are shown, and a stable pinching surface can be obtained without wobbling the tip by performing high-precision molding with MIM. Examples of the material of the MIM include stainless steel and titanium, and the joint 3d is welded, brazed, and bonded. In CIM, alumina, zirconia, and the like are used, and the bond is mainly bonded. Further, as shown in the enlarged view of the CC cross section in FIG. 4 (d), the joint portion 3d is formed into a cylindrical shape with the action portion piece right 2e, and the one action portion piece left 2f is formed into a rod shape and inserted and joined. Also good.

2A and 2B show Embodiment 2 of the pinching tool of the present invention, where FIG. 2A is a plan view, FIG. 2B is a front view, and FIG. 2C is a pair of working end 2 and support end 3 before assembly. (D) is an AA cross-sectional enlarged view, (e) is a BB cross-sectional enlarged view.
As shown in FIG. 2C, the clip 1a has a working end portion 2 composed of a working piece piece right 2a, a working piece piece left 2b, and a supporting end piece 3, which are shown in FIGS. As shown in FIG. The action end 2 is molded and sintered by MIM or CIM, and is composed of a pair of action parts 2 of an action part piece right 2a and an action part piece left 2b.
The support end portion 3 has a biasing portion 3e. If the plate thickness of the urging portion 3e is thin and the width is narrowed, the elasticity is reduced, but on the other hand, twisting occurs when pressed. For this reason, the operation portion as shown in FIG. Misalignment and torsional fitting are likely to occur in the action part. For these reasons, the urging portion 3e has a thickness of 0.3 mm or more and a width of 4 mm or more (for example, a stainless steel material SUS430, SUS304, or 1 / 2H having a thickness of 0.5 mm and a width of about 6 mm is stably sandwiched. Shows what was done). Moreover, if the length of the urging portion 3e is too long, the action portion is twisted or shaken, so that the length is about 15 mm, for example.
Further, the urging portion 3e is a support end portion 3 in which two plate members are sandwiched and joined (eg, welded or brazed) as a gap member 3b, and a gap portion 3c is provided. If there is no gap portion 3c, the urging portions 3e come into contact with each other when the operation portion is pressed, repelling each other, and the repulsive force becomes strong and unstable. For this reason, the gap part 3c is obtained by the gap material 3b.
On the inner side of the action part at the tips of the action part piece right 2a and the action part piece left 2b, a striped pattern 2aa provided with unevenness like a fingerprint is provided. In general, when picking hairs or the like, when the surfaces are flat, the picking power may be averaged and distributed through the picked hairs. On the other hand, when concentrated at one point by providing a step or the like, it may break or break. The striped pattern 2aa is sandwiched at multiple points to prevent these. A recess 2ac is provided at the center. This is to pinch the hair more appropriately by pinching with multiple points, and more reliably pinch and try to pinch the vicinity of the root instead of the tip of the hair, such as tweezers It provides more certainty in operation. Further, as shown in (b), a rounded portion 2ab is provided around the inner front end portion. The rounded portion 2ab makes it difficult to pinch or damage the skin or mucous membrane when pinching invisible or difficult-to-see hair such as ear holes, hair inside the nose, armpits or the like. The radius of the rounded portion is 0.2 mm or more (for example, about 0.4 mm is good for soft skin). If the radius of the rounded portion 2ab becomes too large, it becomes difficult to pick hair from the root, and if it becomes smaller, it becomes easier to pick skin and the like. Further, the striped pattern 2aa may be provided on both action portions or on one side. The striped pattern 2aa is a concave and convex groove having a height of about 0.2 mm, for example. If the height of the mountain becomes too large, it will be cut, and if it becomes smaller, it will be difficult to remove thick hair. For example, several stripes 2aa are provided at intervals of, for example, about 0.3 mm. Although the striped pattern 2aa is used here, a crossing pattern or the like may be used. It is desirable to provide an uneven groove in a direction orthogonal to the direction of hair.

FIG. 3 shows a usage example of Embodiment 2 of the present invention, in which the clip 1a is pinched with a finger 91 and the tips of the action part piece right 2a and the action part piece left 2b are in contact with each other. At this time, the gap 2ad is about 0.3 mm, and when the action pieces are pressed further, the action pieces come into contact with each other and the hairs and the like are sandwiched in parallel. It is. Conventionally, mass production with such an accuracy has been difficult and expensive by press working or manual processing. Moreover, it becomes still more expensive to provide the stripe pattern 2aa and the rounded portion 2ab as described above.

FIG. 4 shows an example of use of the second embodiment of the present invention, in which a middle finger 9a is placed inside the curved portion 8 of the curved portion 8 which is curved in a substantially “shaped” shape in the vicinity of the finger-hanging portion 5 where the thumb and index finger are hooked during operation. The ring finger 9b, the little finger 9c, etc. can be held so as to be entangled, and the clip 1a can be held stably. In addition, since each finger deviates to the outside, it is difficult for these fingers to hit the object because they deviate from the object (for example, the arm when the hair of the arm is pulled out). In addition, by narrowing the neck of the neck portion 7 of the action part, the field of view for identifying the object is widened and it is easy to find the next work location (for example, the next target hair if it is skin hair). From these, further ease of operation is produced. Even when the fish is boned, the extra fingers do not touch the fish body, and the field of view is wide, making it easy to find the next target bone. For this reason, it is easy to handle and efficient without breaking the body.
Hereinafter, the same contents as those described above will be omitted as appropriate.

FIG. 5 is a plan view of Example 3 of the clip device of the present invention. The pinching tool 1b shows a working end 2 molded with a pair of MIM or CIM and a support end 31 molded with plastic resin. A joint portion 3 a is provided so as to wrap the other end of the working portion of the working end portion 2. For joining, the action part piece right 2a and the action part piece left 2b may be insert-molded, or each piece may be bonded or welded later.

FIG. 6 is a plan view of Embodiment 4 of the clip device of the present invention. The clip 1c is composed of an action end 21 and a support end 3 formed of MIM or CIM, and the action end 21 is formed of an action piece female 2c and an action piece male 2d. Is provided with a fitting projection 2da on the acting piece 2d, and a guide pin 2db longer than the fitting projection on the side of the fitting projection 2da.

FIG. 7 shows the movement of the occlusal part of Example 4 of the clip device of the present invention. 7A, as the finger-hanging portion 5 is pressed, the guide pin 2db slides along the right end of the fitting hole 2ca of the fitting hole 2ca to guide the fitting convex portion 2da into the fitting hole 2ca. As shown in (b), it shows that the fitting is surely completed. By this guide mechanism, the fitting hole 2ca and the fitting projection 2da are securely fitted, and the hair located at the fitting portion is cut securely. Here, hair cutting is shown, but even in tweezers, by providing a guide pin and a guide hole in each action piece, a guide mechanism can be provided and the tip fitting portion can be accurately guided.

FIG. 8 shows a modification of Embodiment 2 of the pinching tool of the present invention, in which silicon rubber is integrally formed on the action portion 25 and silicon coating 2af is shown. For example, silicon rubber having a hardness of 80 degrees is integrally formed around the working portion with a thickness of 0.3 mm by vulcanization adhesion. By providing silicon rubber on the surface of the action part, even if thick hair and thin hair or thick bone and thin bone are sandwiched at the same time, both are pressed together by the elasticity of silicon rubber It becomes possible to remove. Due to the difference in which the silicon rubber is integrally formed, unlike the case where the silicon rubber is covered, there is no deviation from the action portion, and a reliable clamping is obtained.

As described above, the present invention has been described. However, the action part is made into a hollow shape, the dent part of the operation part is made into an oval shape, a punched hole, the shape of the support end is round, or the biasing part. Various shapes and combinations can be considered, such as one provided with a plurality of wires, but such a range is considered as a range of application of the present invention.

1 · 1a · 1b · 1c: Clipping device, 2 · 21 · 22: Working end portion, 25: Working portion, 2a · 2e: Working piece piece right, 2b · 2f: Working piece piece left, 2aa: Striped pattern, 2ab : Rounded part, 2ac: recessed part, 2ad: gap, 2af: silicon coating, 2c: action part female, 2d: action part male, 2ca: fitting hole, 2da: fitting convex part, 2db: guide pin, 2g: Extraction part, 3 · 31: support end part, 3a: joint part, 3b: gap material, 3c: gap part, 3d: gap material, 3e · 3g: biasing part, 5: finger hook part, 6: joint part, 6a : Joint, 7: Neck, 8: Curved bend, 9: Hand, 9a: Middle finger, 9b: Ring finger, 9c: Little finger, 91: Finger

Claims (14)

In the clip tool having a pair of opposing working parts at one end of the support part,
A clip tool comprising a working end formed by injection molding of a pair of metals or ceramic powder. The clip tool according to claim 1,
A clip tool comprising a fitting portion having a plurality of fine irregularities on the inner surface of the action portion of the action end portion. The clip tool according to claim 2,
A sandwiching tool characterized in that silicon rubber is molded and coated on the action portion of the action end portion. The clip tool according to claim 1,
A pinching tool comprising a biting portion in which the action portions of the action end portions engage with each other. In the pinch tool according to any one of claims 1 to 4,
A sandwiching tool characterized in that a neck portion having a base that supports the action portion narrower than the action portion is provided. In the clip tool according to any one of claims 1 to 5,
A pinching tool comprising a finger hook portion that is operated by a fingertip having a dent on the side of the action end portion. In the clip tool according to any one of claims 1 to 6,
Extending the working end portion to provide a biasing portion,
A pinching tool characterized in that a biasing portion is joined and integrated with each other to provide a support portion as a support end portion. In the clip tool according to any one of claims 1 to 6,
The working end;
A pinching tool comprising a support end provided with a plate-like metal having a spring property or a biasing portion formed of plastic resin in a support, and the working end and the support end are connected. In the clip tool according to any one of claims 1 to 8,
A pinching tool characterized in that the planar shape of the working end portion is substantially U-shaped. The clip tool according to any one of claims 7 to 9,
A pincer having a thickness of 0.3 mm or more and a width of 4 mm or more of the urging portion of the support end. In the clip tool according to any one of claims 1 to 10,
A pinch having a roundness with a radius of 0.2 or more around at least the tip inside the action portion. In the pinching tool according to any one of claims 1 to 11,
A pinching tool provided with a guide mechanism that guides and guides the action part to guide the engagement or biting of the action parts. In the pinching tool according to any one of claims 1 to 3 and claims 5 to 12,
A pinching tool characterized in that the pinching tool is depigmented and deboned. In the clip tool according to any one of claims 1 and 4 to 12,
A clip tool characterized in that the clip tool is cut into hairs.

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