JPH0839443A - Multistep polygonal wrench and its assembly method - Google Patents

Abstract

PURPOSE:To improve efficiency by reducing a frequency of changing a wrench, in a single multistep polygonal wrench by which work of tightening a bolt of diameter in a different size can be performed. CONSTITUTION:A multistep polygonal wrench 1 is constituted by storing polygonal wrenches 10, 20, 30, 40 of diameter in a plurality of large/small similar figures successively protruded so as to most protrude the polygonal wrench 40 of minimum diameter, to make each multiangle wrench sliable by a telescopic system further to bias the wrench always in these axial directions by compression springs 15, 25, 35 so as to protrude the polygonal wrench 10 of maximum diameter in the outermost side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-stage polygon wrench constructed so that a single polygon wrench can be used for tightening bolts of a plurality of sizes. The "polygon wrench" used in this specification means a "polygon bar wrench" used when tightening bolts with a polygonal hole formed in the upper end surface of the head, and a bolt in which the head itself is polygonal. Please note that it refers to both the "box wrench" used when tightening. In the following description, a hexagonal bar wrench, which is one of the generally used polygonal bar wrenches, will be described as an example.

[0002]

2. Description of the Related Art A currently used hexagonal bar wrench 100 is
As shown in the perspective view of FIG. 10, a steel rod having a regular hexagonal cross section and a uniform diameter (thickness) is bent into an L shape. When a hexagonal hole is formed on the upper end surface using such a hexagonal wrench 100 and a bolt is tightened, one of the tip portions 101 and 102 of the hexagonal wrench 100 is fitted into the hexagonal hole, and the other The bolts are tightened by holding the tip portions 101 and 102 and rotating them.

[0003]

If the size of the bolt is different and the size of the hexagonal hole is different, the bolt must be tightened using a hexagonal wrench 100 according to the size of the bolt. Therefore, it is necessary to prepare a plurality of hexagonal bar wrenches 100 having different diameters in advance,
Hexagonal wrench 100
There was an inconvenience of having to replace the bolt, and the efficiency of tightening work tended to decrease that much. The present invention aims to solve these problems.

[0004]

Therefore, in the multi-stage polygon wrench of the present invention, the polygon wrench of similar shape having a plurality of small and large diameters are sequentially projected so that the polygon wrench of the smallest diameter is projected the most, and Each of the polygonal wrenches is slidable in a telescopic manner so that the large-diameter polygonal wrench is located on the outermost side, and is always biased by a spring in the axial direction of the polygonal wrench to be housed so as to project. Solved.

Further, in the assembly of the multi-stage polygon wrench of the present invention, the first outer diameter of the tip portion is formed into a polygon having a minimum diameter,
Prepare a minimum diameter polygon wrench whose base is formed slightly thicker than the front end surface, and the front end is formed in a polygon with a first cylinder having an outer diameter larger than the outer diameter of this minimum diameter polygon wrench, The tip of the polygon wrench with the smallest diameter can be inserted into the center of the tip surface, but it has a polygonal hole that does not pass through the base, and the outer diameter of the rear end of the first cylinder is the same as that of the tip. It is slightly thicker than the outer diameter, an internal thread is applied to its inner peripheral surface, and this rear end is opened, and through this opening, the polygon wrench of the smallest diameter is slidably inserted into the inside of the cylinder, and A first spring is inserted from the opening into the cylinder, and a first screw is screwed into the inner peripheral surface of the rear end portion to close the opening,
The rear end of the minimum-diameter polygon wrench is pressed by the first spring so that the tip of the minimum-diameter polygon wrench is always projected outward from the tip surface of the first cylinder through the polygonal hole. The second polygonal wrench is assembled into a second cylinder having a third outer diameter larger than the outer diameter of the second polygonal wrench, and the distal end portion is formed in a polygonal shape. Although the tip of the second polygon wrench can be inserted, a polygonal hole that does not pass through the rear end of the first cylinder is provided, and the outer diameter of the rear end of the third cylinder is the same as that of the tip. It is slightly thicker than the outer diameter, its inner peripheral surface is internally threaded, and its rear end is open. From this opening, the polygon wrench of the second outer diameter can be slid inside the second cylinder. Insert the second spring into the cylinder through the opening, and screw the second screw into the inner peripheral surface of the rear end to Opening with closing, said rear end of said second polygonal wrench is pressed by the second spring second
Assembling a polygon wrench having a third outer diameter, in which the tip of the polygon wrench is always projected outward from the tip surface of the second cylinder through the polygon hole. Using a third tube with a fourth outer diameter larger than the outer diameter,
Assembling the fourth outer diameter polygonal wrench in the same manner as the third outer diameter polygonal wrench, and sequentially arranging a plurality of similar-shaped polygonal wrenches having different diameters such that the smallest diameter polygonal wrench is projected the most. Each polygonal wrench is slidable in a telescopic manner and is always biased in the axial direction by a spring so that the polygonal wrench with the largest diameter is projected to the outermost side. I'm taking a way to do it.

[0006]

Therefore, by preparing one multi-step polygon wrench of the present invention, even when tightening bolts having different diameters, this one multi-step polygon wrench can be used. When a strong tightening force is required for the bolt, strength is required for the tubular polygon wrench of each element constituting the multi-stage polygon wrench of the present invention, so it is necessary to make each cylinder thick. For that purpose, one multi-stage polygon wrench is composed of an odd number of polygon wrench such as 1 mm, 3 mm, 5 mm, 7 mm, etc., and the other one is 2 mm, 4 m.
If two multi-stage polygonal wrenches of the present invention are prepared by using even-numbered polygonal wrenches, such as m, 6 mm, 8 mm, etc., the replacement frequency of the wrenches can be reduced and the work efficiency can be improved.

Further, in assembling the multi-stage polygon wrench of the present invention, if components having a predetermined size are prepared in advance, the assembly can be performed by a relatively simple insertion work, and vice versa. Since it can be disassembled by various operations, repair and replacement of parts can be easily performed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A multistage polygon wrench and a method for assembling the multistage polygon wrench according to the present invention will now be described with reference to FIGS. FIG. 1 is a perspective view showing an entire multistage hexagonal bar wrench of the present invention, FIG. 2 is an enlarged perspective view of a tip portion of the multistage hexagonal bar wrench of FIG. 1, and FIG. The state in which the wrench is protruding is shown in Fig. B.
Shows a state in which the wrench of each component thereof is pushed in, and FIG. 3 is a partial side view of a main portion showing a state in which bolts are tightened using the multistage hexagonal bar wrench of the present invention. FIG. 4A shows a state in which a relatively small bolt is tightened, and FIG. 4B shows a state in which a relatively large bolt is tightened. FIG. 4 shows the tip of the multistage hexagonal bar wrench of the present invention. FIG. A is a cross-sectional view showing the internal structure of FIG.
FIG. 5B shows a state in which the wrench of each component is pushed in, FIG. 5 shows a hexagonal bar wrench of the minimum diameter of the multistage hexagonal bar wrench of the present invention, and FIG. FIG. 6 is a side view, FIG. B is a plan view seen from the right end face of FIG. A, and FIG. C is a plan view seen from the left end face of FIG. A, and FIG. 6 is an intermediate diameter of the multistage hexagon wrench of the present invention. A hexagonal bar wrench is shown, in which FIG. A is a side view of the whole, FIG. B is a plan view seen from the right end face of FIG. A, and FIG. C is a plan view seen from the left end face of FIG. FIG. 7 shows a hexagonal bar wrench of the final stage diameter of the multistage hexagonal bar wrench of the present invention, FIG. 7A is a side view of the whole, and FIG. 7B is a plan view seen from the right end surface of FIG. And FIG. C is a plan view seen from the left end surface of FIG.
FIG. 8 shows another shape of the wrench of each constituent element of the multi-stage hexagonal bar wrench of the present invention. FIG. 8A is a sectional view showing an example thereof, and FIG. 8B is a sectional view showing another example. FIG. 9 is a perspective view showing the whole of another configuration of the multistage hexagonal bar wrench of the present invention.

First, the structure of the multistage hexagonal bar wrench of the present invention will be described with reference to FIGS. 1 to 3. Reference numeral 1 generally indicates the multistage hexagonal bar wrench of the present invention. In this multi-stage hexagonal wrench 1, the outermost part of the tip 2 is composed of a polygonal bar wrench of a component having the largest diameter (hereinafter, the "polygon bar wrench of the component" is simply referred to as a "part wrench") 10. ,
Next, at the center of the parts wrench 10, the parts wrench 1
A similar part wrench 20 with a diameter slightly smaller than 0
Is elastically projected by a predetermined length from the end surface of the component wrench 10 and then at the center of the component wrench 20 with a diameter slightly smaller than the diameter of the component wrench 20. A similar component wrench 30 is slidably and elastically protruded by a predetermined length from the end surface of the component wrench 20, and the center portion of the component wrench 30 has a diameter smaller than that of the component wrench 30. With a small and similar shape, this multi-stage hexagonal bar wrench 1 has the smallest diameter part wrench 4
0 is slidably and elastically protruded by a predetermined length from the end surface of the component wrench 30. In this way, each component wrench is slidably telescopically and always in the axial direction thereof. The structure is such that it is biased by a spring and protrudes.

Reference numeral 51 is a hexagonal bar handle, and a shaft 52 is integrally formed on an axis of one end of the handle 51, and the outermost and outermost part of the multistage hexagon bar wrench 1 is provided at the tip of the shaft 52. A box head 53 having a hexagonal recess into which the diameter component wrench 10 can be fitted is fixed. Therefore, the handle 51, the shaft 52, and the box head 53 constitute a hexagonal box wrench 50. The hexagonal box wrench 50 can be attached to and detached from the multistage hexagonal bar wrench 1, and FIG. 1 shows a state in which the hexagonal box wrench 50 is fitted into the multistage hexagonal bar wrench 1.

If another multi-stage hexagonal bar wrench 1 is prepared, for example, the size of each component wrench of the multi-stage hexagonal bar wrench 1 is, for example, the component wrench 10, 20, 3,
0, 40 for 1 mm, 3 mm, 5 mm, and 7 respectively
mm with an odd diameter, and the size of the other multi-stage hexagon bar wrench 1A (not shown)
For example, the component wrenches 10A, 20A, 30A, 40A may be configured with even diameters such as 2 mm, 4 mm, 6 mm, and 8 mm, respectively.

The state shown in FIG. 2A shows a state in which all the other component wrenches 20, 30, 40 project from the component wrench 10 by a predetermined length, and the multi-stage hexagonal bar wrench 1 in this state. When tightening the bolts, as shown in FIG. 3A, only the component wrench 40 of the multistage hexagonal bar wrench 1 is fitted into the hexagonal hole 61 of the smallest diameter formed on the upper end surface of the small bolt 60. Therefore, the other component wrenches 20 and 30 are still protruding by the predetermined length.

The state shown in FIG. 2B shows a state in which all the other component wrenches 20, 30, 40 are pushed and stored in the component wrench 10, and the multistage hexagonal bar wrench 1 in this state is used for bolting. 3B, the component wrench 10 of the multistage hexagonal bar wrench 1 is fitted into the hexagonal hole 71 of the maximum diameter formed on the upper end surface of the large bolt 70, as shown in FIG. 3B. Parts wrench 20, 3
0 and 40 remain pushed.

Next, the internal structure of the multistage hexagonal bar wrench 1 and its assembling method will be described with reference to FIGS. 4 to 7.
First, the component wrench 10, 20, 3 shown in FIGS.
It will be described from 0 and 40. FIG. 5 shows the minimum diameter component wrench 40, which is made of solid steel and has a tip portion 41 formed in the hexagonal minimum diameter and a base portion 42 formed in the hexagonal shape. The diameter is slightly larger than that of the portion 41.

FIG. 6 shows the component wrenches 20 and 30.
For simplification of description, the reference numerals for the component wrench 20 are shown in parentheses in FIG. The component wrench 30 is also made of steel, but its tip 31 is formed with a hexagonal diameter slightly larger than the diameter of the component wrench 40.
A hexagonal hole 31B into which the tip 41 of the component wrench 40 can be freely inserted is formed in A. And FIG.
As shown in FIG. 3, a collar 31C is formed inside the tip portion 31. Further, the inside of the middle of the component wrench 30 is formed with a hexagonal diameter into which the base portion 42 of the component wrench 40 can be fitted. On the other hand, the outer diameter of the base portion 32 of the component wrench 30 in which the opening 32A is formed is slightly larger than the outer diameter of the tip portion 31, and the inner diameter of the base portion 32 is slightly smaller than the outer diameter of the base portion 42 of the component wrench 40. The inner peripheral surface 33 in the vicinity of the opening 32A is provided with a female screw 34. Select such dimensions, and
By forming such a structure, the component wrench 30
The base portion 42 is allowed to slide freely in the axial direction inside the. The component wrench 20 is also formed in the same structure, and only the dimensions are different.

FIG. 7 shows the outermost part wrench 10 of the multi-stage hexagonal bar wrench 1. The component wrench 30 is formed of a steel hexagonal cylinder having no step on the outer peripheral surface. In FIG. 7, a side end surface 11A of the right end 11 thereof is provided with a hexagonal hole 11B through which the tip 21 of the component wrench 20 can be freely inserted, as shown in FIG. 7B. And
As shown in FIG. 4, a collar 11 is provided inside the tip portion 11.
C is formed. On the other hand, a female screw 14 is provided on the inner peripheral surface 13 of the base 12 of the component wrench 10 near the opening 12A, and the inner peripheral surface other than the portion provided with the female screw 14 is formed in a hexagonal shape. The inner diameter of the base portion 12 is slightly larger than the outer diameter of the base portion 22 of the component wrench 20, and the inner peripheral surface 13 allows the base portion 22 to slide freely.

Next, these parts wrenches 10, 20, 3
Multi-stage hexagon wrench 1 of the present invention using 0, 40, etc.
The assembling method will be described with reference to FIGS. 3 and 4. First, the front end portion 41 of the component wrench 40 is inserted first from the opening 32A of the base portion 32 of the component wrench 30 toward the inside, and the front end portion 41 is projected from the hexagonal hole 31B. For example, a coiled compression spring 35 is inserted from the opening 32A, and a male screw 36 is further screwed into the female screw 34 in the opening 32A, so that the base 42 of the component wrench 40 forms an inner peripheral surface of the tip 31 of the component wrench 30. It is brought into contact with the flange 31C formed in the above.

Next, the component wrench 40 is used as the component wrench 3.
The component wrench 40/30 in the state of being incorporated in 0 is directed inward from the opening 22A of the base portion 22 of the component wrench 20, and the tip portions 41/31 of the component wrench 40/30 are inserted first, and the tip portion 41 thereof is inserted. Projecting 31 from the hexagonal hole 21B and inserting a similar coiled compression spring 25 from the opening 22A and further opening 32A thereof.
Then, the male screw 26 is screwed into the female screw 24 so that the base portion 32 of the component wrench 40 or 30 is brought into contact with the collar 21C formed on the inner peripheral surface of the tip portion 21 of the component wrench 20.

Further, the component wrenches 40, 30 and 20 thus assembled are directed toward the inside from the opening 12A of the base 12 of the component wrench 10 so that the component wrench 40 and 30 and
Inserting the tip portions 41, 31 and 20 of 20 first, projecting the tip portions 41, 31 and 21 from the hexagonal hole 11B, and from the opening 12A, a similar coil-shaped compression spring 15 is inserted, and the male screw 16 is further screwed into the female screw 14 in the opening 12A, and the base 22 of the component wrench 40, 30, 20 is attached to the collar 11C formed on the inner peripheral surface of the tip 11 of the component wrench 10. Abut.
When assembled in this manner, the multistage hexagonal bar wrench 1 of the present invention can be obtained. The state shown in FIG. 4B is a state in which all the component wrenches 40, 30, 20 are compressed against the compression springs and are built in the component wrench 10. The multi-stage hexagonal wrench 1 in this state is the state in which it is used in the use state shown in FIG. 3B.

The inner peripheral surface of each of the component wrenches 10, 20, 30 is formed in a hexagonal shape, and each of the bases 22, 32 42 of each of the component wrenches 20, 30, 40 is a component wrench 40 when the base is tightened with a bolt. Although the detents 30 and 20 are formed, this does not need to form a hexagon inside, and the inner peripheral surface may be formed in a quadrangle as shown in FIG. 8A. In addition, as shown in FIG. 8B, the steel plate is bent into a hexagonal cylinder, and each component wrench 10, 20, 30, 40 is bent.
May be formed, or may be formed with a pulling material. Furthermore, in the embodiment, a coil-shaped spring is illustrated as the compression spring, but a leaf spring may be used for this.

As described above, the component wrench of each element constituting the multistage hexagonal bar wrench 1 is 1 mm, 3 m.
m, 5 mm, 7 mm, etc., composed of odd-numbered polygonal bar wrenches, the other set is 2 mm, 4 mm, 6 mm, 8 mm
.. and the like, it is possible to reduce the frequency of replacement of the hexagonal wrench for preparing two multi-stage polygonal bar wrenches of the present invention by configuring it with an even number of polygonal bar wrenches, and to improve work efficiency. FIG. 1 shows a state in which the multi-stage hexagonal bar wrench 1 is used by using a hexagonal box wrench 50 and a handle 51. As shown in FIG.
Using the comparatively long multi-stage hexagon bar wrench 1A of the multi-stage hexagon bar wrench 1 of the present invention having the structure as described above,
Multi-stage hexagon wrench 1 for 1 mm, 3 mm, 5 mm, 7 m
The multi-stage hexagonal bar wrench 1A is composed of an odd number of polygonal bar wrenches such as m ..., and the other set is 2 mm, 4 mm, 6 mm,
8 mm ... Even numbered polygonal bar wrenches, these multistage hexagonal bar wrenches 1 and 1A are connected via a hexagonal box wrench 50, and one multistage hexagonal bar wrench can be used as a handle May be taken. With such a configuration, there is an advantageous effect.

In the above description of the present invention, the hexagonal bar wrench has been described, but the present invention can also be applied to a box wrench. In this case, the component wrenches 40, 30, 2
Hexagonal holes may be formed on the respective tip surfaces of 0 and 10, and the hexagonal shape has been described above, but other polygonal shapes may be used.

[0023]

As described above, if one multi-stage polygon wrench of the present invention is prepared, this multi-stage polygon wrench can be used even when tightening bolts of different sizes. It is possible to deal with it, and it is not necessary to change the wrench frequently, and the work efficiency can be improved accordingly. Further, the storage space is enough for one or two multistage polygonal wrench of the present invention.
Furthermore, there is no risk of the wrench falling apart and being lost.

When assembling the multi-stage polygon wrench of the present invention, if components of a predetermined size are prepared in advance, the assembly can be performed by a relatively simple insertion work, and vice versa. When replacing parts or parts, it is possible to disassemble by a simple work to remove each male screw,
It is easy to repair and replace parts.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire multistage hexagonal bar wrench of the present invention.

2 is an enlarged perspective view of a tip end portion of the multi-stage hexagonal bar wrench of FIG. 1, FIG. 2A shows a state in which a wrench of each component thereof is projected, and FIG. It shows the pressed state.

FIG. 3 is a partial side view of a main portion showing a state in which bolts are tightened using the multistage hexagonal wrench of the present invention, and FIG. 3A shows a state in which relatively small bolts are tightened. B of the same figure shows a state in which a relatively large bolt is tightened.

FIG. 4 is a cross-sectional view showing the internal structure of the tip portion of the multistage hexagonal bar wrench of the present invention, in which FIG. A shows a state in which the wrench of each component thereof is projected, and FIG. The component wrench is shown pushed in.

FIG. 5 shows a hexagonal bar wrench having the smallest diameter of the multistage hexagonal bar wrench of the present invention, and FIG.
9B is a plan view seen from the right end face of FIG. A, and FIG. C is a plan view seen from the left end face of FIG.

FIG. 6 shows a hexagonal bar wrench having an intermediate diameter of the multistage hexagonal bar wrench of the present invention, FIG.
9B is a plan view seen from the right end face of FIG. A, and FIG. C is a plan view seen from the left end face of FIG.

7A and 7B show a hexagonal bar wrench having the final diameter of the multistage hexagonal bar wrench of the present invention, in which FIG. A is a side view of the whole and FIG. B is a plan view seen from the right end surface of FIG. , And Figure C
FIG. 3 is a plan view seen from the left end face of FIG.

FIG. 8 shows another shape of the wrench of each constituent element of the multistage hexagonal bar wrench of the present invention, FIG. A being a sectional view showing an example thereof, and FIG. B being a sectional view showing another example. It is a figure.

FIG. 9 is a perspective view showing an overall configuration of another multistage hexagonal bar wrench according to the present invention.

FIG. 10 is a perspective view of a currently used hexagonal bar wrench.

[Explanation of symbols]

 1 Multi-Stage Hex Wrench 1A of the Invention 1 Multi-Stage Hex Wrench of Other Configurations of the Invention 10 Polygonal Wrench (Component Wrench) 11 as a Component 11 Tip 11A Tip 11B Hexagonal Hole 12 Base 12A Open 13 Inner peripheral surface 14 Female screw 15 Compression spring 16 Male screw 20 Parts wrench 21 Tip part 21A Tip surface 21B Hexagonal hole 22 Base part 22A Opening 23 Inner peripheral surface 24 Female screw 25 Compression spring 26 Male screw 30 Parts wrench 31 Tip part 31A Tip surface 31B 6 Square hole 31C Tsuba 32 Base 32A Opening 33 Inner peripheral surface 34 Female screw 35 Compression spring 36 Male screw 40 Component wrench 41 Tip 42 Base

Claims (2)

[Claims] 1. A polygon wrench having a plurality of similar shapes having different diameters is successively projected so that the polygon wrench having the smallest diameter is projected most, and the polygon wrench having the largest diameter is located on the outermost side. A multi-stage polygonal wrench characterized in that the wrench is telescopically slidably accommodated in such a manner that it is always biased in the axial direction by a spring and is projected. 2. A polygonal wrench having a minimum diameter whose first outer diameter is formed to be a polygon having a minimum diameter and whose base is formed to be slightly thicker than the tip surface. A first cylinder having an outer diameter larger than the diameter thereof has a tip portion formed in a polygonal shape, and the tip portion of the polygon wrench having the smallest diameter can be inserted into the center portion of the tip surface, but the base portion does not pass through. The first hole is provided with a square hole.
The outer diameter of the rear end of the cylinder is slightly larger than the outer diameter of the front end,
A female screw is applied to the inner peripheral surface thereof, and the rear end thereof is opened, and the polygon wrench having the minimum diameter is slidably inserted into the inside of the cylinder through the opening, and the first end is inserted into the cylinder through the opening. No. 1 spring is inserted, a first screw is screwed into the inner peripheral surface of the rear end portion to close the opening, and the rear end of the polygon wrench having the minimum diameter is pressed by the first spring. A second polygonal wrench is assembled by constantly projecting the tip end of the polygonal wrench having the smallest diameter from the tip end surface of the first cylinder through the polygonal hole, and is larger than the outer diameter of the second polygonal wrench. The tip of the second cylinder having the third outer diameter is formed in a polygonal shape, and the tip of the second polygon wrench can be inserted into the center of the tip surface of the second cylinder. A polygonal hole that does not pass through the rear end is provided, and the outer diameter of the rear end of the third cylinder is the outer diameter of the front end. It is slightly thicker and has an internal thread on its inner peripheral surface, and its rear end is opened, and the polygon wrench with the second outer diameter is slidably inserted into the second cylinder through this opening. Then, the second spring is inserted into the cylinder through the opening, the second screw is screwed into the inner peripheral surface of the rear end portion to close the opening, and the rear end of the second polygon wrench is inserted. The tip of the second polygon wrench is pressed by the second spring by pressing the second spring.
Assembling a polygon wrench having a third outer diameter, which is always protruded outward from the front end surface of the cylinder through the polygonal hole, and a fourth outer diameter larger than the outer diameter of the polygon wrench having the third outer diameter is assembled. Assembling a polygon wrench having a fourth outer diameter in the same manner as the polygon wrench having the third outer diameter using the provided third cylinder. The polygonal wrenches are sequentially projected so that they protrude the most, and the polygonal wrenches are telescopically slidably and constantly biased in the axial direction by springs so that the polygonal wrench with the largest diameter is located on the outermost side. A method for assembling a multistage polygon wrench, characterized in that it is housed so as to project.