Socket joint
阅读说明:本技术 套接件 (Socket joint ) 是由 平尾元宏 森泽阳一 于 2019-07-05 设计创作,主要内容包括:本发明提供一种套接件,该套接件在紧固时难以在套接件孔的凹陷部、特别是凹陷部的顶角产生应力裂纹。本发明的套接件(10)安装在动力工具的输出轴上使用以对紧固部件进行松紧,所述套接件包括在基端形成有供所述输出轴嵌入的插入角(32)的安装筒部(30)和在前端侧形成有供所述紧固部件嵌入的套接件孔(21)的套接件筒部(22),所述套接件孔形成在从所述套接件筒部的前端后退的位置,并具有朝向外周鼓出的多个凹陷部(22),在所述套接件筒部的前端形成有环状的台阶部(28),该台阶部(28)具有与所述套接件孔的所述凹陷部外接的内径。(The invention provides a socket which is difficult to generate stress cracks on a concave part of a socket hole, particularly on the top angle of the concave part when being fastened. The socket (10) is used for being mounted on an output shaft of a power tool to tighten and loosen a fastening part, and comprises a mounting cylinder part (30) and a socket cylinder part (22), wherein an insertion angle (32) for the output shaft to be embedded is formed at the base end of the mounting cylinder part, a socket hole (21) for the fastening part to be embedded is formed at the front end side of the socket cylinder part, the socket hole is formed at a position retreating from the front end of the socket cylinder part and is provided with a plurality of concave parts (22) protruding towards the outer periphery, an annular step part (28) is formed at the front end of the socket cylinder part, and the step part (28) has an inner diameter which is externally connected with the concave parts of the socket hole.)
1. A socket is mounted on an output shaft of a power tool for tightening or loosening a fastening member,
the socket is characterized by comprising:
a mounting cylinder portion having an insertion angle formed at a base end thereof into which the output shaft is inserted; and
a socket cylinder portion having a socket hole into which the fastening member is fitted formed on a front end side thereof,
the socket hole is formed at a position retreated from the front end of the socket cylinder part and has a plurality of concave parts bulging toward the outer periphery,
an annular step portion is formed at the front end of the socket cylinder portion, and the step portion has an inner diameter externally connected with the recessed portion of the socket hole.
2. The socket of claim 1,
the depressed part has the apex angle, step portion with the apex angle is external.
3. The socket of claim 2,
the concave part is provided with two top angles, and the step part is externally connected with the top angles and the inner circumferential surface positioned between the top angles.
4. A power tool in which, in a power tool,
the power tool is formed by mounting the socket of any one of claims 1 to 3 on an output shaft.
Technical Field
The present invention relates to a socket (socket) mounted on a power tool to tighten or loosen a fastening member such as a bolt or a nut, and more particularly, to a socket capable of reducing stress cracks in a socket hole.
Background
In a power tool for tightening a fastening member such as a bolt or a nut, a socket fitting to the fastening member is attached to an output shaft of the power tool, and the fastening member is fastened.
The socket is formed with a socket hole having a recess formed toward the outer periphery, such as a hexagon into which the fastening member is fitted. The socket hole is formed without a chamfer from the end face of the socket, or as shown in patent document 1, is formed so as to be tapered from the end face of the socket toward the socket hole in order to facilitate insertion of the fastening member.
Prior art documents
Patent document
Patent document 1: japanese laid-open patent publication No. 7-9356
High output of power tools and high speed for short-time fastening are advancing, and higher fastening torque is required for fastening members. In this case, there is a case where the socket is cracked or cracked at the time of fastening.
When the socket having the cracks or the cracks was observed, it was found that the cracks or the like occurred starting from the recessed portions bulging toward the outer periphery of the socket hole, particularly from the vertex angles formed on the recessed portions. The reason for this is considered to be caused by concentration of stress at the vertex angle during fastening, and the outer side of the recessed portion, that is, the end face of the socket is located on the outer side of the vertex angle, which easily causes cracks or fractures.
Disclosure of Invention
Problems to be solved by the invention
The invention aims to provide a socket which is difficult to generate stress cracks on a concave part of a socket hole, particularly the top angle of the concave part during fastening.
Means for solving the problems
In order to solve the above problems, the socket of the present invention is used by being attached to an output shaft of a power tool to tighten or loosen a fastening member,
the socket includes: a mounting cylinder portion having an insertion angle formed at a base end thereof into which the output shaft is inserted; and a socket cylinder portion having a socket hole into which the fastening member is fitted formed on a front end side thereof,
the socket hole is formed at a position retreated from the front end of the socket cylinder part and has a plurality of concave parts bulging toward the outer periphery,
an annular step portion is formed at the front end of the socket cylinder portion, and the step portion has an inner diameter externally connected with the recessed portion of the socket hole.
Preferably, the recessed portion has a vertex angle, and the stepped portion is circumscribed with the vertex angle.
The recessed portion may have two vertical corners, and the stepped portion may be circumscribed with the vertical corners and an inner circumferential surface located between the vertical corners.
The power tool of the present invention can be configured by attaching the socket to the output shaft.
Effects of the invention
According to the socket, the socket hole is a structure in which the recessed portion and the annular step portion are circumscribed, that is, the annular step portion and the recessed portion are inscribed. Since the recessed portion and the apex angle of the recessed portion are not provided on the end surface as in the conventional art but are continuous with the stepped portion, stress cracks such as cracks or fissures starting from the apex angle of the recessed portion or the recessed portion are less likely to occur even if stress concentrates.
Drawings
Fig. 1 is a perspective view of a socket according to a first embodiment of the present invention.
Fig. 2 is a front view of the socket of the first embodiment.
Fig. 3 is a side view of the socket.
Fig. 4 is a side view of the socket of the first embodiment, partially cut away.
Fig. 5 is a bottom view of the socket.
Fig. 6 is an enlarged view of a circled portion a of fig. 1.
Fig. 7 is a perspective view of a socket of a second embodiment of the present invention.
Fig. 8 is a front view of the socket of the second embodiment.
Fig. 9 is a side view of the socket of the second embodiment, partially cut away.
Fig. 10 is a perspective view of a socket of a third embodiment of the present invention.
Fig. 11 is a front view of the socket of the third embodiment.
Fig. 12 is a side view of the socket of the third embodiment, partially cut away.
Fig. 13 is a perspective view of a socket according to a fourth embodiment of the present invention.
Fig. 14 is a front view of the socket of the fourth embodiment.
Fig. 15 is a side view of the socket.
Fig. 16 is a side view of the socket according to the fourth embodiment, partially cut away.
Fig. 17 is a bottom view of the socket.
Fig. 18 is a perspective view of a socket according to a fifth embodiment of the present invention.
Fig. 19 is a front view of the socket of the fifth embodiment.
Fig. 20 is a side view of the socket of the fifth embodiment, partially cut away.
Fig. 21 is a perspective view of a socket according to a sixth embodiment of the present invention.
Fig. 22 is a front view of the socket of the sixth embodiment.
Fig. 23 is a side view of the socket according to the sixth embodiment, partially cut away.
Fig. 24 is a perspective view of a socket according to a seventh embodiment of the present invention.
Fig. 25 is a front view of the socket of the seventh embodiment.
Fig. 26 is a side view of the socket of the seventh embodiment, partially cut away.
Fig. 27 is a perspective view of a socket according to an eighth embodiment of the present invention.
Fig. 28 is a front view of the socket of the eighth embodiment.
Fig. 29 is a side view of the socket according to the eighth embodiment, partially cut away.
Fig. 30 is a perspective view of a socket of a ninth embodiment of the present invention.
Fig. 31 is a front view of the socket of the ninth embodiment.
Fig. 32 is a side view of the socket of the ninth embodiment, partially cut away.
Description of reference numerals:
10 socket joint
20 socket joint spare barrel portion
21 socket joint piece hole
22 recess
24 corner angle
26 inner peripheral surface
28 step part
Detailed Description
The
Fig. 1 is a perspective view of a
As shown in fig. 1, 2, 4, and 6, the
Each recessed
As shown in the drawing, the
The depth of the stepped portion 28 (the length from the
The
In the
That is, since the
Fig. 7 to 32 show an embodiment of the
Fig. 7 to 9 show a second embodiment of the
Fig. 10 to 12 show a third embodiment, which is a substantially hexagonal star-shaped hole (so-called TORXPLUS (registered trademark)), and in which an arc-shaped inner
Fig. 13 to 17 show a fourth embodiment, having a
Fig. 18 to 20 show a fifth embodiment having a
Fig. 21 to 23 show a sixth embodiment in which the arc-shaped recessed
Fig. 24 to 26 show a seventh embodiment having a
Fig. 27 to 29 show an eighth embodiment, which is a
Fig. 30 to 32 show a ninth embodiment having a
In any of the embodiments, since the
Further, the power tool to which the
The above description is illustrative of the present invention and should not be construed as limiting the invention in the claims or as narrowing the scope thereof. The structure of each part of the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications are possible within the technical scope described in the claims.
For example, the shape of the
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