JP2002066937A - Multifunctional wrench socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fasten or loosen plural types of bolt or nut without changing work. SOLUTION: A multifunctional wrench socket 1 comprising a first socket part 2a, which fits to the first bolt head or nut, and a second socket part 2b, which fits to the second bolt head or nut smaller than the first bolt head or nut in diameter, is provided. The first and second socket parts 2a, 2b are disposed axially next to each other. The depth of the first socket part 2a is smaller than the height of the second bolt head or nut.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrench socket, and more particularly to a multifunctional wrench socket to which a plurality of types of bolts or nuts can be fastened.

[0002]

2. Description of the Related Art As a tool for fastening a hexagon bolt or a hexagon nut, there is a socket wrench having a cylindrical wrench socket which is externally fitted to a bolt head or a hexagon nut of the hexagon bolt.

A wrench socket is formed in a substantially cylindrical shape, and has, at one end thereof, a hexagonal hole which fits a bolt head or a nut exactly, or a hole in which two hexagons are shifted by 30 ° about the center of gravity and overlapped. A socket part. At the other end of the wrench socket, a mounting portion for detachably mounting the wrench socket to the wrench body is provided.

[0004] When a bolt or a nut is fastened by using such a wrench socket, the socket is attached to the bolt or the nut while the wrench socket is attached to a wrench body or an impact wrench by an attaching portion. Align and fit externally. Then, by operating the wrench body or the impact wrench, the bolt or nut is tightened by rotating the wrench socket around the longitudinal axis, for example, clockwise, and the bolt or nut is loosened by rotating counterclockwise. You can do it.

[0005]

However, conventional wrench sockets can only be applied to a single type of bolt head or nut, and in order to fasten or loosen different types of bolts or nuts, they must be used. However, there was a disadvantage that the wrench socket had to be replaced. In particular, it is difficult to automatically replace a wrench socket with a nut runner that is attached to a dedicated machine or a robot and automatically tightens automatically supplied bolts or nuts. There was a disadvantage that a plurality of impact wrenches had to be provided for each.

The present invention has been made in view of the above circumstances, and is capable of fastening a plurality of types of bolts or nuts without performing a replacement operation according to the type of bolt or nut to be fastened. It is intended to provide sockets.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a first socket portion which fits a first bolt head or nut, and a first socket portion having a smaller diameter than the first bolt head or nut. A second socket portion that fits a second bolt head or nut is disposed adjacent to the second socket portion in the axial direction, and a depth dimension of the first socket portion is greater than a height of the second bolt head or nut. We have proposed a small multifunctional wrench socket.

In the multifunctional wrench socket, it is preferable that the depth dimension of the first socket portion is 15% or more of the width across flats of the first bolt head or the nut.
Further, it is more preferable that the depth dimension of the first socket portion is 85% or less of the width across flats of the second bolt head or the nut.

Further, if a tapered surface converging from the first socket portion toward the second socket portion is formed between the first socket portion and the second socket portion, the effect is obtained. It is a target. Furthermore, behind the second socket part,
The first nut may have a recess or through hole with an inner diameter larger than the outer diameter of the bolt to be screwed.

[0010] In the multifunctional wrench socket, the third bolt having a smaller diameter than the second bolt head or the nut.
A third socket portion that fits the bolt head or nut of the first socket portion is axially adjacent to the second socket portion,
The sum of the depth dimension of the socket part and the depth dimension of the second socket part may be smaller than the height of the third bolt head or the nut.

In this case, the depth dimension of the second socket portion is 15% of the two face widths of the second bolt head or nut.
As described above, the sum of the depth dimension of the first socket part and the depth dimension of the second socket part is 85% or less of the width across flats of the third bolt head or the nut. preferable. Further, a recess or a through hole having an inner diameter larger than the outer diameter of the bolt to which the first nut is screwed may be provided at the back of the third socket portion. These wrench sockets are useful as multifunctional wrench sockets for impact wrenches.

[0012]

According to the multifunctional wrench socket according to the present invention, the first socket portion and the second socket portion are arranged adjacent to each other, and the depth dimension of the first socket portion is adjusted to the second bolt head or nut. Since the height is smaller than the height, the second socket portion can be externally fitted to the second bolt or nut. Therefore, when the first bolt or nut is fastened or the like, the first socket portion is fitted over the first bolt head or nut, and when the second bolt or nut is fastened or the like, the first bolt or nut is fastened. By externally fitting the second socket portion to the second bolt head or nut, two types of bolts or nuts are fastened, or
Can be loosened.

In the multifunctional wrench socket, if the depth dimension of the first socket portion is 15% or more of the width across flats of the first bolt head or the nut, the first socket portion is moved from the first socket portion to the first socket portion. It is possible to sufficiently secure the torque to be transmitted to the bolt or the nut.

When the depth dimension of the first socket portion is set to 85% or less of the width across flats of the second bolt head or the nut, the power is transmitted from the second socket portion to the second bolt or the nut. It is possible to secure a sufficient torque.

Further, by providing a tapered surface between the first socket portion and the second socket portion, a shoulder portion of a first bolt head or a nut adapted to the first socket portion is formed. The chamfered portion can be arranged so as to be in contact with the tapered surface, and the fitting length between the first socket portion and the first bolt head or nut can be secured.

Further, by providing a concave portion or a through-hole having an inner diameter larger than the outer diameter of the bolt to which the first nut is screwed, the inner portion of the second socket portion is provided with either of the first and second socket portions. It is possible to prevent the bolt to which the nut is screwed from interfering with the wrench socket even when the nut is tightened.

Further, a third socket portion that fits a third bolt head or nut smaller in diameter than the second bolt head or nut is disposed axially adjacent to the second socket portion, and the first socket By making the sum of the depth dimension of the part and the depth dimension of the second socket part smaller than the height of the third bolt head or the nut, the first to third parts are obtained.
It is possible to fasten three types of bolts or nuts with the socket part.

In this case, the depth dimension of the second socket portion is set to 15% of the width across flats of the second bolt head or the nut.
With the above, it is possible to sufficiently secure the torque transmitted from the second socket portion to the second bolt head or the nut. Further, by setting the sum of the depth dimensions of the first and second socket portions to 85% or less of the width across flats of the third bolt head or the nut, the third bolt head or the third bolt head or It is possible to sufficiently secure the torque transmitted to the nut.

Further, by providing a recess or a through-hole having an inner diameter larger than the outer diameter of the bolt to which the first nut is screwed, the three types of nuts are fastened in the same manner as described above. In such a case, it is possible to prevent the bolt with which the nut is screwed from interfering with the wrench socket.

By using these multifunctional wrench sockets for an impact wrench, the labor for replacing the wrench sockets according to the type of bolt or nut is omitted, and the efficiency of the bolt or nut fastening operation is greatly improved. It becomes possible.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a multifunctional wrench socket according to the present invention will be described below with reference to FIGS. Multifunctional wrench socket 1 according to the present embodiment
Is, for example, a wrench socket for an impact wrench or a nut runner, which is formed in a substantially cylindrical shape as shown in FIG. 1 and has a socket portion 2 at one end and a mounting portion 3 at the other end. .

As shown in FIG. 2, the socket portion 2 has a first wrench socket 1 formed adjacent to one end thereof.
And a second socket portion 2b. As shown in FIG. 3, the first socket portion 2a is a hole having a cross section in which two identical regular hexagons are shifted from each other by 30 ° around the center of gravity, and has a constant cross section from the end surface of the wrench socket 1. It is formed to a depth D _1. Further, as shown in FIG. 2, the second socket portion 2b
A hole having a slightly smaller shape similar cross-sectional shape than the first socket portion 2a, is formed over a depth D ₂ from the end of the first socket portion 2a.

The first and second socket portions 2a, 2a,
The reason why the section 2b is formed in such a sectional shape is to increase the fitting position between the bolt or nut and the socket portion 2 to improve the workability of the fastening operation, and it is needless to say that a simple hexagonal section may be used. No.

The depth dimension D1 of the _first socket portion 2a is
It is set smaller than the height H ₂ of the second bolt head B ₂ or nut N ₂ which is adapted to the second socket part 2b. For example, in the present embodiment, the first socket 2
a depth dimension D ₁ is the bolt head B ₁ or the nut N
₁ is set to be about 15% or more of the width across flats.

The setting of the bolt head B
By the torque applied from the wrench socket according to _one or size of the nut N _1, the corners of the bolt head B ₁ or the nut N ₁ without being damaged, the minimum fitting a proper torque is transmitted This is to ensure dimensions.

Similarly, the depth of the first socket portion 2a
Dimension D₁Is the second bolt head B ₂Or nut N₂
Is set to be about 85% or less of the width across flats
You. This setting was made for the same reason as above.
The second socket portion 2b and the second bolt head B₂Ma
Or nut N₂The fitting size with at least the second bolt
Head B₂Or nut N₂15% or less of the width across flats
This is because it is possible to secure the above.

The mounting portion 3 is a hole having a substantially rectangular cross section, into which a rectangular column-shaped mounting shaft of a wrench main body (not shown) can be fitted. A hemispherical recess 3a is provided for engaging a locking ball (not shown) provided to be able to protrude and retract.

The socket portion 2 and the mounting portion 3 are connected by a through hole 4 along the axial direction. This through hole 4
The inner diameter of the nut N _1, which is fitted to the first socket portion 2a is secured to be larger than the outer diameter of the bolt B ₁ to be screwing.

According to the present embodiment having the above-described structure,
The operation of the inch socket 1 will be described below. Real truth
First bolt B using wrench socket 1 according to the embodiment
₁Or nut N ₁To tighten or loosen
It is shown in FIG. FIG. 4A shows the first nut N₁Tighten
(B) is the first bolt B₁Conclude
Is the case.

A wrench socket 1 according to the present embodiment is illustrated.
Not attached to the wrench body via the mounting part 3
And a first socket portion 2a formed at one end thereof.
To the first bolt head B₁Or nut N₁Fitted outside
Let Depth dimension D of first socket portion 2a₁Is the first
Bolt head B₁Or nut N₁The width across flats of 15
%, So that the first socket
Part 2a and first bolt B ₁Or nut N₁What is
Torque from the socket 1 to the first bolt B₁
Or nut N₁Mated so that they can be transmitted to
You. In this state, bolt B₁Or nut N₁And wrench
The relative rotation about the axis with the socket 1 is locked.
By applying torque to the wrench body,
Luto B₁Or nut N₁To fasten or loosen
It becomes possible.

In this case, the first socket 2a
Second socket portion 2b which is formed adjacent to the are formed sufficiently long in the axial direction, the back of the second socket portion 2a, the bolt B ₁ of the first nut N ₁ is screwed Since the through-hole 4 having an inner diameter larger than the outer dimensions is formed, even when the first nut N ₁ is fastened to the long bolt B ₁ , the bolt B ₁ interferes with the wrench socket 1. It is possible to prevent the fastening operation from being hindered.

Next, the first bolt B ₁ or the nut N ₁
Figure 5 shows the case of fastening the second bolt B ₂ or nut N ₂ of smaller diameter than. FIG. 5A shows the second nut N ₂
FIG. 2B shows the second bolt B _2.
Is concluded.

When fastening the second bolt B ₂ or the nut N ₂ , the _second socket portion 2 b formed adjacent to the first socket portion 2 a is connected to the second bolt head B ₂ or the nut N _2. externally fitted to the nut _{N 2.} Depth D ₁ of the first socket section 2a, which are set to 85% or less of the second bolt two surface width dimension of the head B ₂ or nut N _2, a second bolt head B ₂ or nut relative rotation between the second being fitted to the socket portion 2b and both are engaged over at least 15% of the length of the two surface width dimension of N _2. Thus, by applying a torque to the wrench body, the second signed a bolt B ₂ or nut N _2, or, it is possible to loosen.

[0034] Also in the case of fastening the second nut N _2, as in the case of engaging the first nut N _1, the through-hole 4 formed in the back of the second socket part 2b, the bolt B ₂ can be reliably prevented from interfering with the wrench socket 1 and hindering the fastening operation.

As described above, according to the wrench socket 1 according to the present embodiment, two types of bolts B ₁ , B ₂ or nuts N having different sizes are used by using the same wrench socket 1.
_1, entered into _{N 2,} or can be loosened. As a result, there is no need to replace the wrench socket 1 for each type of bolt or nut, and the working efficiency can be improved. In particular, in the case of a nut runner or the like that is mounted on a robot or the like and that automatically performs a fastening operation, there is no need to provide a special structure such as an automatic exchange mechanism for the wrench socket 1 and two types of bolts B ₁ and B _2. Alternatively, the nuts N ₁ and N ₂ can be fastened, and there is an effect that automation can be promoted.

In the present embodiment, as shown in FIG. 3, the boundary surface between the first socket portion 2a and the second socket portion 2b is formed as a plane orthogonal to the axis of the wrench socket 1. However, instead of this, a tapered surface that converges from the first socket portion 2a toward the second socket portion 2b may be used.

[0037] With this configuration, the first bolt head B ₁ or nut N ₁ to chamfered portion of the first bolt shoulder portion of the head B ₁ or the nut N ₁ is in contact with the tapered surface
Can be fitted into the first socket portion 2a, and a sufficient fitting dimension can be ensured.

Next, the second embodiment of the wrench socket according to the present invention will be described.
Will be described with reference to FIGS. 6 to 8.
As shown in FIGS. 6 and 7, the wrench socket 10 according to the present embodiment has
This is different from the wrench socket 1 according to the first embodiment.

In the present embodiment, the socket 11 is
1 to 1 which are arranged adjacently from one end face of the
It has third socket portions 11a, 11b, 11c.
You. Depth dimension of first and second socket portions 11a and 11b
D₁, D₂Are the same as those of the third socket portion 11c.
Third bolt B₃Or nut N₃Height dimension H ₃
It is set smaller than.

In the present embodiment, for example, the depth dimension D ₁ of the first socket portion 11a is not less than 15% of the width across flats of the first bolt B ₁ or the nut N _{1 and} the second bolt 11 or less 85% of the width across flats dimension of the head _{B 2} or nut _{N 2,} the depth _{D 2} of the second socket section 11b,
The width across flats of the second bolt B ₂ or the nut N ₂ is 15
% Or more and the depth dimension D _{1 of} the first socket portion 11a.
And the total depth D2 of the _second socket portion 11b is
And it is configured to be equal to or less than 85% of the third width across flats dimension of the bolt head B ₃ or nut N _3.

[0041] in the axial direction behind the third socket portion 11c, that the first nut N ₁ through holes 4 having an inner diameter larger than the outer diameter of the bolt B ₁ is screwed is provided,
The other parts such as the structure of the mounting part 3 are the same as those of the wrench socket 1 according to the first embodiment.

Using the wrench socket 10 of the present embodiment configured as described above, the first to third nuts N ₁ , N ₁ ,
FIG. 8 shows a case where the fastening work of N ₂ and N ₃ is performed. FIG. 6A shows the case where the _first nut N1 is fastened.
, If from the first nut N ₁ for fastening the second nut N ₂ of the small diameter, FIG. (C) is a case where from the second nut N ₂ for fastening the third nut N ₃ of smaller diameter, respectively Is shown.

First and second socket portions 11a, 11
Since the depth dimensions D ₁ and D ₂ of b are set to dimensions sufficient to transmit the torque applied from the wrench to the nuts N ₁ , N ₂ and N ₃ , respectively, the _{first to third} dimensions are set. When fastening any of the nuts N ₁ , N ₂ , N ₃ ,
In each case, the nuts N ₁ , N ₂ , N ₃ can be properly fastened or loosened without damage.

The inner diameter of the through hole 4 is equal to the first nut N _1.
Since but larger than the outer diameter of the bolt B ₁ screwed, first to
When fastening any of the third nuts N ₁ , N ₂ , N ₃ , the wrench socket 10 and the bolts B ₁ , B ₂ , B _{3 to} which these nuts N ₁ , N ₂ , N ₃ are screwed are connected. Interference between them can be eliminated, and a smooth fastening operation can be performed.

As described above, according to the wrench socket 10 according to the present embodiment, three types of bolts B ₁ , B ₂ , B ₃ or nuts N ₁ , N ₂ , N ₃ , B ₃ can be used without replacing the wrench socket 10. N ₃ it is possible to conclude the like,
There is an effect that the efficiency of the fastening operation can be further improved. In the present embodiment, similarly to the first embodiment, the boundary surface between the first socket portion 11a and the second socket portion 11b, the second socket portion 11b and the third
The boundary surface with the socket portion 11c may be formed in a tapered surface shape.

In the first and second embodiments, the wrench sockets 1 and 10 for fastening a hexagon bolt or a hexagon nut have been described. Instead of 2 and 11, a wrench socket may be used which is arranged adjacent to the hexagonal axis for the small diameter bolt and the hexagonal axis for the large diameter bolt in this order from the tip.

Further, the wrench socket for the nut runner has been described, but it goes without saying that the wrench socket for an impact wrench or the wrench socket for a manual tool may be employed.

[0048]

As described above, according to the multifunctional wrench socket according to the present invention, a plurality of types of bolts or nuts having different sizes are fastened without replacing the wrench socket. Can be loosened. Therefore, according to the size of the bolts and nuts,
As compared with a conventional wrench socket that requires replacement work, there is an effect that the work efficiency of the fastening work can be improved.

Further, in a nut runner or the like for automatically fastening bolts, there is an effect that it is not necessary to replace a wrench socket and complete automation can be achieved for a plurality of types of bolts.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a multifunctional wrench socket according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the multifunctional wrench socket of FIG. 1;

FIG. 3 is a side view of the multifunctional wrench socket of FIG. 1 as viewed from the socket section side.

FIG. 4 is a longitudinal sectional view for explaining a fastening operation of a first bolt or nut using the multifunctional wrench socket of FIG. 1;

FIG. 5 is a longitudinal sectional view for explaining a fastening operation of a second bolt or nut using the multifunctional wrench socket of FIG. 1;

FIG. 6 is a longitudinal sectional view showing a multifunctional wrench socket according to a second embodiment of the present invention.

FIG. 7 is a side view of the multifunctional wrench socket of FIG. 6 as viewed from the socket section side.

FIG. 8 shows a first to a first examples using the multifunctional wrench socket of FIG.
It is a longitudinal section for explaining the fastening operation of the 3rd nut.

[Explanation of symbols]

1,10 wrench socket 2,11 socket section 2a, 11a first socket portion 2b, 11b third socket second socket portion 4 through-hole _{11c B 1, B 2, B} 3 volts N _{1, N} 2, N ₃ nut

Claims (10)

[Claims] 1. A first socket portion that fits a first bolt head or nut, and a second socket portion that fits a second bolt head or nut smaller in diameter than the first bolt head or nut. Wherein the depth dimension of the first socket portion is smaller than the height of the second bolt head or the nut. 2. The multifunctional wrench socket according to claim 1, wherein a depth dimension of the first socket portion is 15% or more of a width across flats of the first bolt head or the nut. 3. The multi-piece according to claim 1, wherein a depth dimension of the first socket portion is 85% or less of a width across flats of the second bolt head or the nut. Function wrench socket. 4. A tapered surface that converges from the first socket portion toward the second socket portion is formed between the first socket portion and the second socket portion. The multifunctional wrench socket according to any one of claims 1 to 3, wherein 5. The first socket in the back of the second socket portion.
The multifunctional wrench socket according to any one of claims 1 to 4, wherein the nut has a concave portion or a through hole having an inner diameter larger than an outer diameter of a bolt with which the nut is screwed. 6. A third socket portion adapted to fit a third bolt head or nut having a smaller diameter than the second bolt head or nut is disposed axially adjacent to the second socket portion, and The sum of the depth of the first socket and the depth of the second socket is smaller than the height of the third bolt head or the nut. Multifunctional wrench socket described in Crab. 7. The multifunctional wrench socket according to claim 6, wherein a depth dimension of the second socket portion is 15% or more of a width across flats of the second bolt head or the nut. 8. A total of a depth dimension of the first socket part and a depth dimension of the second socket part is not more than 85% of a width across flats of the third bolt head or the nut. The multi-function wrench socket according to claim 6 or 7, wherein: 9. The first socket in the back of the third socket portion.
The wrench socket according to any one of claims 6 to 8, wherein the nut has a concave portion or a through hole having an inner diameter larger than an outer diameter of a bolt with which the nut is screwed. 10. A multifunctional wrench socket for an impact wrench according to claim 1.