JPH08276368A - Cutting pliers made of light alloy - Google Patents

Abstract

PURPOSE: To provide the light cutting pliers capable of having strong pinching force and cutting force by providing paired pinching plates for its pinching part, and letting a metallic pivot strengthened as much as iron be employed as a rotatably connecting part. CONSTITUTION: Steel pinching plates 3 and 4 are unitedly provided for the opposite surfaces of a right and a left pinching part 1 and 2 of a pair of pliers (a) made of a light alloy, locking projected ribs 7 and 8 are provided in parallel, and cutting edges are vertically provided for the lower part of the aforesaid ribs, screw holes are provided for the pinching surfaces of steel pinching plates 3 and 4 at their lower portion with the screw holes slipped off from their cores, an upper boss part and a lower boss part are projected out of the peripheries of the screw holes, an upper fit-in hole and a lower fit-in hole are recessed in the opposite surfaces of the pinching part 1 and 2 so as to be provided, and an upper bolt hole and a lower bolt hole are bored in the upper and lower fit-in holes respectively. An upper fixedly mounting bolt and a lower fixedly mounting bolt are threadedly engaged therewith, the steel pinching plates 3 and 4 are fixedly mounted onto the pinching part 1 and 2 of a pair of pliers (a), a metallic pivot (b) is formed in the cross rotatably connecting section of a pair of pliers (a) made of a light alloy, a sliding cylinder is fitted in the outer circumferential surface of the bolt cylinder of the aforesaid metallic pivot (b), and a fluoride system resin working layer is thereby formed in the outer circumferential surface of an axial sliding cylinder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to pliers made of light alloy.

[0002]

2. Description of the Related Art Light pliers have been demanded, but a light plier cannot withstand a strong gripping force or a strong cutting force.

Further, it is impossible to form a strong shaft-attached portion.

In this respect, the present invention has solved the problem by installing a steel clinging plate in the clinging portion and adopting a metal pivot shaft made of a metal having strength such as iron in the pivoting portion. Is provided.

[0005]

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

The left and right clasping parts 1 of the pliers body a made of light alloy,
Attached parts 5 and 6 are formed on the opposing surfaces of 2 according to the back shape of the steel clamping plates 3 and 4, and the locking projections are arranged in the horizontal direction on the upper portions of the clamping surfaces of the steel clamping plates 3 and 4. 7 and 8 are arranged side by side, and recesses 9 and 10 and cutting blades 11 and 12 are vertically installed at the lower part of the sandwiching surface, and at the left and right middle portions of the sandwiching plate upper parts of the steel sandwiching plates 3 and 4. Screw holes 13 and 14 are drilled, and the screw holes 13 and 14 are offset from each other, and screw holes 15 and 16 are provided in the lower part of the clasping surface of the steel clasping plates 3 and 4, respectively. 4, the upper boss parts 17, 18 and the lower boss parts 19, 20 on the periphery of the screw holes on the back surface of
And the upper fitting holes 21 and 22 and the lower fitting holes 23 and 24 which are fitted to the upper boss portions 17 and 18 and the lower boss portions 19 and 20, respectively. , 2 facing each other, the upper fitting holes 21, 22 and the lower fitting holes 23, 24 are provided with upper bolt holes 25, 26 and lower bolt holes 27, 28, respectively, and upper fastening bolts 29, A light alloy pliers, characterized in that a steel clasping plate 3, 4 is fastened to the clasping part 1, 2 of the pliers body a by screwing 30 and the lower fastening bolts 31, 32. is there.

[0007] Further, the crossed shaft mounting portion of the pliers body a made of light alloy
Bolt cylinder 54 from one side to shaft mounting holes 51 and 52 provided in 50
Insert the female bolt 55 made of metal protruding from the
Insert the metal male bolt 58 with the bolt rod 57 projecting into 56,
Screw the metal male bolt 58 onto the metal female bolt 55 to attach the shaft.
A metal pivot shaft b is formed in each of 51 and 52, and a sliding cylinder 59 having a collar 59 ′ is fitted on the outer circumference of a bolt cylinder 54 of the metal pivot shaft b. The present invention relates to a light alloy pliers characterized in that a fluorinated resin processing layer 60 is formed on the inner peripheral surface of a sliding cylinder 59 and the outer end surface of a collar 59 ′ that slide in close contact with.

Further, attachment parts 5 and 6 are formed on the facing surfaces of the left and right clasping parts 1 and 2 of the pliers body a made of light alloy so as to match the back shape of the clasping plates 3 and 4 made of steel. Locking ridges 7 and 8 are arranged side by side in a horizontal direction on the upper side of the holding surfaces of the holding plates 3 and 4, and recesses 9 and 10 and cutting blades 11 and 12 are vertically provided on the lower side of the holding surface. Then, screw holes 13 and 14 are drilled in the left and right middle portions of the upper part of the sandwiching surfaces of the steel sandwiching plates 3 and 4, and the screw holes 13 and 14 are offset from each other to form screw holes 15 and 16 in the steel sandwiching plate. The upper boss portions 17 and 18 and the lower boss portions 19 and 20 are provided on the periphery of the screw holes on the back surface of the steel holding plates 3 and 4 so as to protrude from the lower holding surfaces of the holding plates 3 and 4. 17, 18 and the upper fitting holes 21 and 22 and the lower fitting holes 23 and 24, which are fitted to the lower boss portions 19 and 20, are provided with pliers a.
The left and right clasps 1 and 2 are provided with concavities on opposite surfaces, and upper fitting holes 21 and 22 and lower fitting holes 23 and 24 are provided with upper bolt holes 25 and 26 and lower bolt holes 27 and 28, respectively. , The upper fastening bolts 29, 30 and the lower fastening bolts 31, 32 are screwed together to fasten the steel clasping plates 3, 4 to the clasping portions 1, 2 of the pliers body a, and also the light alloy Pliers body a
From the one side to the shaft mounting holes 51, 52 provided in the cross shaft mounting portion 50 of
Insert a female female bolt 55 with a bolt cylinder 54 projecting into it, and a male male bolt with a bolt rod 57 projecting from the opposite side to the collar plate 56.
58 is inserted, and the male male bolt 58 is screwed into the female female bolt 55 to form the metallic pivot shaft b in the shaft mounting holes 51 and 52. A sliding cylinder 59 having a collar 59 'is fitted on the outer periphery of the inner surface of the sliding cylinder 59 and an outer end surface of the collar 59', which are in close contact with the outer peripheral surface of the bolt cylinder 54. The light alloy pliers according to claim 1 or 2, wherein a layer 60 is formed.

[0009]

[Action]

Action of the Invention of Claim 1 The screw holes 13 and 14 and the screw holes 15 and 1 in which the steel clamping plates 3 and 4 are off-centered.
6, the upper boss parts 17 and 18 and the lower boss parts 19 and 2 protruding on the back surface
0 represents the upper fitting holes 21 and 22 and the lower fitting holes 23 of the clasped parts 1 and 2, respectively.
By fitting into the 24, the steel clasping plates 3 and 4 can be securely bolted to the facing surfaces of the clasping parts 1 and 2.

The operation of the invention of claim 2 The sliding cylinder 59 having the fluororesin processing layer 60 formed on the inner peripheral surface of the sliding cylinder 59 having the flange 59 'and the outer end surface of the flange 59' is made of metal. Axis of motion b
Since it is attached to the bolt cylinder 54, a durable and strong shaft-attaching portion is formed which slides smoothly in the thrust direction and the radical direction and is not worn.

Action of the Invention of Claim 3 The actions of Claims 1 and 2 are exhibited together.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show a preferred embodiment of the present invention, in which the rear surface shapes of steel clamping plates 3 and 4 are provided on the facing surfaces of the left and right clamping portions 1 and 2 of a light alloy pliers body a. Attached parts 5, 6 according to
The locking ridges 7 and 8 are formed side by side in the horizontal direction on the upper side of the holding surface of the steel holding plates 3 and 4, and the recesses 9 and 10 are formed on the lower side of the holding surface, and the cutting blade is formed on the side edge of the recess. 11 and 12 are installed vertically, and screw holes 13 and 14 are drilled in the left and right middle parts of the upper part of the clamping surface of the steel clamping plates 3 and 4, and the screw holes 13 and 14 are displaced from the core to screw holes 15 , 16 are steel clasps 3,4
The upper boss parts 17, 18 and the lower boss parts 19, 20 are provided on the periphery of the screw holes on the back surface of the steel fixing plates 3, 4 to project from the upper boss parts 17, 18 and the lower part. The upper fitting holes 21 and 22 and the lower fitting holes 23 and 24 that fit into the bosses 19 and 20 are recessed in the facing surfaces of the left and right sandwiched portions 1 and 2 of the pliers body a, and the upper fitting holes The upper bolt holes 25, 26 and the lower bolt holes 2 in the holes 21, 22 and the lower fitting holes 23, 24
7, 28 are provided, and the upper fastening bolts 29, 30 and the lower fastening bolts 31,
32 by screwing, and the steel clasping plate 3, on the clasping parts 1, 2 of the pliers body a,
Fasten 4.

Since the boss has a ring shape, the boss and the recess into which the boss is fitted can be easily processed. Further, since the screw stopper is provided with a spot facing, the finished appearance becomes good.

Further, a crossing shaft attachment portion of the pliers body a made of light alloy
Bolt cylinder 54 from one side to shaft mounting holes 51 and 52 provided in 50
Insert the female bolt 55 made of metal protruding from the
Insert the metal male bolt 58 with the bolt rod 57 projecting into 56,
Screw the metal male bolt 58 onto the metal female bolt 55 to attach the shaft.
A metal pivot shaft b is formed in each of 51 and 52, and a sliding cylinder 59 having a collar 59 ′ is fitted on the outer circumference of a bolt cylinder 54 of the metal pivot shaft b. A fluorinated resin processing layer 60 is formed on the inner peripheral surface of the sliding cylinder 59 and the outer end surface of the collar 59 ′ that are in intimate contact with.

The fluorinated resin processed layer 60 is a product name Teflon (tetrafluoroethylene resin) resin processed layer 60 coated on the inner peripheral surface of the sliding cylinder 59 and the outer end surface of the collar 59 'as an abrasion resistant coating. A strong and durable shaft mounting portion is formed by smoothing the sliding and sliding in the thrust direction and the radical direction without wear.

Further, attached parts 5 and 6 are formed on the facing surfaces of the left and right clasping parts 1 and 2 of the light alloy pliers a to match the back shape of the steel clasping plates 3 and 4, and are made of steel. Locking ridges 7 and 8 are arranged side by side in a horizontal direction on the upper side of the holding surfaces of the holding plates 3 and 4, and recesses 9 and 10 and cutting blades 11 and 12 are vertically provided on the lower side of the holding surface. Then, screw holes 13 and 14 are drilled in the left and right middle portions of the upper part of the sandwiching surfaces of the steel sandwiching plates 3 and 4, and the screw holes 13 and 14 are offset from each other to form screw holes 15 and 16 in the steel sandwiching plate. The upper boss portions 17 and 18 and the lower boss portions 19 and 20 are provided on the periphery of the screw holes on the back surface of the steel holding plates 3 and 4 so as to protrude from the lower holding surfaces of the holding plates 3 and 4. 17, 18 and the upper fitting holes 21 and 22 and the lower fitting holes 23 and 24, which are fitted to the lower boss portions 19 and 20, are provided with pliers a.
The left and right clasps 1 and 2 are provided with concavities on opposite surfaces, and upper fitting holes 21 and 22 and lower fitting holes 23 and 24 are provided with upper bolt holes 25 and 26 and lower bolt holes 27 and 28, respectively. , The upper fastening bolts 29, 30 and the lower fastening bolts 31, 32 are screwed together to fasten the steel clasping plates 3, 4 to the clasping portions 1, 2 of the pliers body a, and also the light alloy Pliers body a
From the one side to the shaft mounting holes 51, 52 provided in the cross shaft mounting portion 50 of
Insert a female female bolt 55 with a bolt cylinder 54 projecting into it, and a male male bolt with a bolt rod 57 projecting from the opposite side to the collar plate 56.
58 is inserted, and the male male bolt 58 is screwed into the female female bolt 55 to form the metallic pivot shaft b in the shaft mounting holes 51 and 52. A sliding cylinder 59 having a collar 59 'is fitted on the outer periphery of the inner surface of the sliding cylinder 59 and an outer end surface of the collar 59', which are in close contact with the outer peripheral surface of the bolt cylinder 54. Forming layer 60.

[0017]

According to the present invention as set forth in claim 1, a steel holding plate capable of withstanding a strong holding force and a strong cutting force is provided opposite to the holding portion of a light alloy pliers body. Therefore, the pliers are comparable to the conventional pliers, and the steel clasping plate is firmly fixed to the clasping part of the pliers by the misalignment of the core and the fitting action of the screw hole and the boss portion on the back.

According to the present invention as set forth in claim 2, since the pivot shaft is made of a conventional iron pivot shaft to form a strong shaft attachment portion, the sliding shaft of the sliding cylinder having the flange is used. A sliding cylinder with a fluororesin processed layer formed on the outer and inner peripheral surfaces is attached to the bolt cylinder of the metal sliding shaft, so the sliding in the thrust and radical directions is smooth and does not wear out. A strong axial attachment portion is formed.

Since the present invention of claim 3 is configured as described above, it is a plier made of a light alloy, which is excellent in practical use, in which the above effects are used together.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment product of the present invention.

FIG. 2 is a front view of a part of a portion where a steel cling plate is removed.

FIG. 3 is an exploded perspective view of a steel clinging plate and a clinging part for attaching the same.

FIG. 4 is a front view of a steel clinging plate.

FIG. 5 is a cross-sectional view of a mounting portion of a steel clinging plate.

FIG. 6 is a sectional view of a pivot portion.

[Explanation of symbols]

 a Pliers body b Pivot shaft 1,2 Clamping part 3,4 Steel clad plate 5,6 Attached part 7,8 Locking ridge 9,10 Recess 11,12 Cutting blade 13,14 Screw hole 15,16 Screw hole 17,18 Upper boss 19,20 Lower boss 21,22 Upper fitting hole 23,24 Lower fitting hole 25,26 Upper bolt hole 27,28 Lower bolt hole 29,30 Upper fastening bolt 31,32 Lower fastening bolt 50 Cross shaft attachment part 51,51 Shaft attachment hole 53 Collar board 54 Bolt cylinder 54 Metal female bolt 56 Collar board 57 Bolt rod 58 Metal male bolt 59 Sliding cylinder 59 'Collar 60 Fluorine resin processing layer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koichi Kaneko 1-20, Suro, Sanjo City, Niigata Prefecture Niigata Prefectural Working Tool Cooperative (72) Inventor Kazuyoshi Sato 1-20, Sukuro, Sanjo City, Niigata Prefecture Niigata Prefecture Within the industrial tool cooperative

Claims (3)

[Claims] 1. A pliers body made of a light alloy is provided with an attachment portion corresponding to the back shape of a steel clasp plate on the opposing surfaces of the left and right clasp parts, and a horizontal portion is provided above the clasp plate of the steel clasp plate. Multi-directional locking ridges are installed side by side, a recess is provided in the lower part of the sandwiching surface, and a cutting blade is installed vertically on the side edge of the recess, and a screw hole is drilled in the left-right middle part of the sandwiching plate upper part of the sandwiching plate. Then, shift the screw hole and the core to provide a screw hole in the lower part of the sandwiching surface of the steel sandwich plate, and project an upper boss portion and a lower boss portion on the periphery of the screw hole on the back surface of the steel sandwich plate, The upper fitting hole and the lower fitting hole into which the upper boss portion and the lower boss portion fit are recessed in the facing surfaces of the left and right sandwiched portions of the pliers, and the upper fitting hole and the lower fitting hole are Pliers made of light alloy characterized in that upper bolt holes and lower bolt holes are provided in the upper part, and upper fastening bolts and lower fastening bolts are screwed to fasten a steel fastening plate to the fastening part of the pliers body. . 2. A metal female bolt having a bolt cylinder protruding from a collar board is inserted from one side into a shaft attachment hole formed in the cross-axis attachment portion of the pliers body a made of light alloy, and the bolt is attached to the collar board from the opposite side. Insert the male male bolt with the rod protruding, and screw the male male bolt to the female female bolt to form the metal pivot shaft within the pivot hole. It is characterized in that a sliding cylinder having a collar is fitted on the outer periphery of the flange, and a fluorinated resin processing layer is formed on the inner peripheral surface of the sliding cylinder that closely slides on the outer peripheral surface of the bolt cylinder and the outer end surface of the flange. Pliers made of light alloy. 3. A pliers body made of a light alloy is provided with an attachment portion corresponding to the back shape of the steel clasp plate on the opposing surface of the left and right clasp parts, and a horizontal portion is formed above the clasp plate of the steel clasp plate. Multi-directional locking ridges are installed side by side, a recess is provided in the lower part of the sandwiching surface, and a cutting blade is installed vertically on the side edge of the recess, and a screw hole is drilled in the left-right middle part of the sandwiching plate upper part of the sandwiching plate. Then, shift the screw hole and the core to provide a screw hole in the lower part of the sandwiching surface of the steel sandwich plate, and project an upper boss portion and a lower boss portion on the periphery of the screw hole on the back surface of the steel sandwich plate, An upper fitting hole and a lower fitting hole that fit into the upper boss portion and the lower boss portion are recessed in the facing surfaces of the left and right sandwiched portions of the pliers, and the upper fitting hole and the lower fitting hole are An upper bolt hole and a lower bolt hole are provided in the upper part, and the upper fastening bolt and the lower fastening bolt are screwed to fix the steel clasp plate to the clasp part of the pliers body, and the pliers body made of light alloy. Axial mounting provided at the cross shaft mounting part of Insert a female female bolt with a bolt cylinder protruding from one side into the hole into the hole, insert a male male bolt with a bolt rod protruding from the opposite side into the hole, and insert a male male bolt into the female female bolt. To form a metal pivot shaft in the shaft fitting hole, fit a sliding cylinder with a collar on the outer circumference of the bolt shaft of the metal pivot shaft, and make close contact with the outer peripheral surface of the bolt cylinder. 3. The light alloy pliers according to claim 1, wherein a fluorinated resin processed layer is formed on the inner peripheral surface of the sliding cylinder and the outer end surface of the collar.