JP2012086300A - Bolt-loosening tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bolt-loosening tool that facilitates loosening a bolt, even in a narrow working space or a place where many obstacles exist.SOLUTION: The bolt-loosening tool 11 is used for bolt-loosening work in a narrow working space. The bolt-loosening tool 11 has a first turning section 13 for force application at a base side of a flat and long body 12, and a second turning section 14 for force output at a distal end side of the body. The first turning section 13 and the second turning section 14 are linked via an interlocking member 15. This linkage is configured such that when the first turning section 13 turns, the second turning section 14 turns interlockingly with that turning. A fitting part 23 to be fitted with a shaft 24 of a turning tool is formed at a center of the first turning section 13, and a socket-attaching part 27 is prepared at the second turning section 14. The socket-attaching part 27 is attached with a socket 29 to be fitted with a head of a bolt.

Description

  The present invention relates to a bolt loosening tool, and more particularly, to a bolt loosening tool that can be used in, for example, seismic reinforcement work and can easily loosen a bolt even in a narrow work space or a place with many obstacles. Is.

  Conventionally, a socket wrench 1 configured as shown in FIG. 6 is known as a tool for loosening a bolt in a narrow work space. The socket wrench 1 includes an operating rod 3 having a grip 2 on the base side, a connecting rod 5 attached to the distal end portion of the operating rod 3 via a pin 4, and attached to the distal end portion of the connecting rod 5 via a shaft portion 6. A socket mounting portion 7 having a ratchet mechanism and a socket 8 detachably attached to the socket mounting portion 7 are also configured. A concave fitting portion 9 that can be fitted to the head of the bolt is formed in the lower portion of the socket 8 (see Patent Document 1).

  When the socket wrench 1 having such a configuration is used, after the bolt head is fitted into the fitting portion 9 of the socket 8, the grip 2 is gripped as shown in FIG. Push the operating rod 3 in the direction of arrow A. By this operation, the socket 8 rotates in the direction of arrow B or arrow C to turn the bolt.

  Next, when the operating rod 3 is pulled in the direction opposite to the arrow A direction, the socket 8 does not rotate due to the action of the ratchet mechanism of the socket mounting portion 7, and the socket mounting portion 7 is in the direction opposite to the arrow B or arrow C direction. To turn. Thus, the bolt can be tightened or loosened by repeating the push-pull operation of the operating rod 3.

Japanese Utility Model Publication No. 56-137969

  The conventional socket wrench 1 has problems that the operation rod 3 is repeatedly moved by human power, so that the working efficiency is low and a sufficient force cannot be applied to the bolt.

  Further, since it is necessary to move the operation rod 3 and the connecting rod 5 in the front-rear direction and the left-right direction, if there are obstacles at the work site, the operation may be hindered or the work may be difficult. There are also problems.

  Therefore, in the conventional socket wrench 1, work efficiency is improved, sufficient force can be applied to the bolt, and operation is hindered even if there are obstacles at the work site. There are problems that must be solved.

  The gist of the present invention for solving the problems of the conventional example is a bolt loosening tool used when a bolt loosening operation is performed in a narrow work space, and the bolt loosening tool is a flat and long main body. The first rotation part for input is provided on the base side of the first, the second rotation part for output is provided on the distal end side, and the first rotation part and the second rotation part are connected to each other by interlocking means. When the first rotating unit is rotated, the second rotating unit is configured to rotate in conjunction with the center of the first rotating unit. A fitting part for fitting the shaft part is provided, a socket attachment part is provided on the second rotating part, and a socket for fitting the head of the bolt can be attached to and detached from the socket attachment part. Is to be attached to.

Further, the main body has a configuration in which two upper and lower plate members respectively disposed along both end portions of the first rotating portion and both end portions of the second rotating portion are screwed together. thing,;
A rectangular base plate is disposed at the base of the plate-like member, and the base plate has an extending portion that extends upward and downward from the upper and lower plate-like members, respectively. The base plate and the plate member are screwed together;
Side plates are disposed along the long sides of the plate-like member;
The interlocking means is a belt or a chain;
Is included.

According to the bolt loosening tool according to the present invention, since the main body is flat and long, the bolt can be easily loosened by inserting the main body into a narrow working space.
In addition, unlike the conventional example, it is not necessary to move the main body in the front-rear and left-right directions, so that it can be used even in places with many obstacles.
Furthermore, if a bit of an impact wrench is fitted to the fitting portion and then the first turning portion is turned, the second turning portion is rotated in conjunction with the bolt fitted with the socket. Since the head is forcibly rotated, the bolt can be loosened quickly and efficiently.
And since an electric tool is used, there exists various outstanding effects that sufficient force can be applied with respect to a volt | bolt.

  The main body portion has a configuration in which two upper and lower plate members respectively disposed along both end portions of the first rotating portion and both end portions of the second rotating portion are screwed to each other. This has an excellent effect that the flat and long shape can be formed firmly and robustly.

A rectangular base plate is disposed at the base of the plate-like member, and the base plate has an extension portion extending upward and downward from the upper and lower plate-like members, respectively. Since the base plate serves as a handle when the plate and the plate-like member are screwed together, the grip on the base side is good and reliable.
Further, since the base plate and the plate-like member are screwed together, there are various excellent effects that the main body portion is formed to be strong and sturdy.

  By arranging the side plate along the long side of the plate-like member, the side portion of the main body portion is almost blocked. Therefore, since the hand and fingers do not touch the belt when the main body is gripped, an excellent effect of safety is achieved.

  Since the interlocking means is a belt or a chain, there is an excellent effect that when the first rotating part is rotated, the second rotating part is interlocked and smoothly and reliably rotates.

It is a side view of the bolt loosening tool 11 which concerns on this invention. It is a front view of the bolt loosening tool 11 which concerns on this invention. It is a side view in the state where a part of bolt loosening tool 11 concerning the present invention was fractured. It is a bottom view in the state where socket 29 was removed of bolt loosening tool 11 concerning the present invention. It is a bottom view in the state where socket 29 was attached of bolt loosening tool 11 concerning the present invention. It is explanatory drawing which shows the side surface of the socket wrench 1 which concerns on a prior art example. (A) (b) It is a top view explaining the usage method of the socket wrench 1 which concerns on a prior art example.

  Next, embodiments of the present invention will be described with reference to the drawings. First, in FIG. 1 to FIG. 5, reference numeral 11 denotes a bolt loosening tool. The bolt loosening tool 11 is provided with a first rotating portion 13 for input on the base side of a flat and long main body portion 12, A second turning part 14 for output is provided on the side, and the first turning part 13 and the second turning part 14 are connected to each other by interlocking means (belt) 15. A fitting portion 23 is provided, and the second rotating portion 14 is provided with a socket attachment portion 27 to which a socket 29 can be attached and detached.

  The main body 12 has rectangular and long plate-like members 16, 16 on the upper end 13 a and the lower end 13 b of the first rotating unit 13 and the upper end 14 a and the lower end 14 b of the second rotating unit 14. The upper and lower two plate-like members 16 and 16 are fixed to each other with screws 17. By configuring the main body portion 12 in this way, the shape of the flat and long main body portion 12 is strong and robust.

  As an example of the dimensions of the main body 12, it is desirable that the width is about 90 to 100 mm, the length is about 300 to 400 mm, and the thickness is about 40 to 50 mm. An example of the dimensions of the plate-like member 16 is desirably about 90 to 100 mm in width, about 300 to 400 mm in length, and about 10 mm in thickness.

  The plate-like members 16 and 16 are integrally provided with side plates 18 along the long sides and near the center of the main body 12. The presence of the side plate 18 substantially closes the side portion of the main body portion 16, so that it is safe because hands and fingers do not touch the belt when gripping the main body portion 16.

A rectangular base plate 19 is disposed at the base of the plate-like members 16 and 16. The base plate 19 has extended portions 19a and 19b extending upward and downward from the upper and lower plate-like members 16 and 16, respectively. Further, the base plate 19 and the plate-like member 16 are fixed to each other with screws 20.
Since the base plate 19 serves as a handle, the grip on the base side is good and can be reliably gripped. Further, since the base plate 19 and the plate-like member 16 are screwed together, the main body portion 16 is formed to be strong and sturdy.

  The first rotating portion 13 is formed in a columnar shape or a cylindrical shape, and as shown in FIG. The first rotating portion 13 is formed so as to be rotatable.

  As shown in FIGS. 3 and 4, a disc-shaped ring portion 22 is integrally formed along the outer peripheral surface at the central portion of the first rotating portion 13. Interlocking means (belt) 15 is bridged along the outer peripheral surface of the ring portion 22.

  As shown in FIGS. 1 and 4, a fitting portion 23 having a square shape in plan view is provided at the center of the first rotating portion 13. The fitting portion 23 is formed in a hole shape penetrating to the lower portion or a concave shape having a required depth. The fitting portion 23 is a portion for fitting a shaft portion 24 (for example, a bit of an impact wrench) of the rotating tool.

  The second rotating portion 14 is formed in a columnar shape or a cylindrical shape, similar to the first rotating portion 13, and as shown in FIG. 3, near the edge portions of the upper end portion 14 a and the lower end portion 14 b. The bearing structure which has the some ball | bowl 25 in the clearance gap between the plate-shaped members 16 and 16 is provided, and the 2nd rotation part 14 is formed rotatably.

  As shown in FIGS. 3 and 4, a disc-shaped ring portion 26 is integrally formed at the central portion of the second rotating portion 14 along the outer peripheral surface. The interlocking means (belt) 15 is bridged along the outer peripheral surface of the ring portion 26.

  A rectangular socket mounting portion 27 is provided below the second rotating portion 14. A screw hole 28 is formed in the side portion of the socket mounting portion 27. The socket attachment portion 27 is a portion where the socket 29 is detachably attached.

  The socket 29 has a concave portion (not shown) that fits with the socket mounting portion 27 in the upper portion, and a hexagonal concave portion 30 that fits in the head portion of the bolt is formed in the lower portion (see FIG. 5). A screw hole 31 is formed on the side of the socket 29, and the screw hole 31 is configured to communicate with the screw hole 28 of the socket mounting portion 27.

  The socket 29 having such a configuration is configured such that an upper concave portion (not shown) is fitted into the socket mounting portion 27 so that the screw hole 31 and the screw hole 28 communicate with each other, and then the screw is screwed and fixed. In addition, the socket 29 prepares various kinds about the magnitude | size and shape of the recessed part 30, and selects and uses it suitably.

  Specifically, the interlocking unit 15 is a belt or a chain, and spans the first rotating unit 13 and the second rotating unit 14 and is connected to each other. When the shaft part 24 of the turning tool is fitted in the fitting part 23 of the first turning part 13 and the first turning part 13 is turned, the second turning part 14 is smoothly turned in conjunction with the first turning part 13. It is configured as follows.

  In the bolt loosening tool 11 configured as described above, first, the concave portion 30 of the socket 29 is fitted to the head of the bolt, and then the shaft portion 24 (such as an impact wrench bit) of the rotating tool is fitted to the fitting portion 23. Fit. Next, when the rotating tool is driven to rotate the first rotating unit 13, the second rotating unit 14 interlocked with the belt 15 rotates. Further, the socket 29 attached to the socket attaching portion 27 of the second turning portion 14 is turned, and the head portion of the bolt fitted with the socket 29 is forcibly turned.

  In this way, the head of the bolt fitted with the socket 29 is forcibly rotated, so that the bolt can be loosened quickly and efficiently and an electric tool is used as the power source. It is possible to apply sufficient force. Of course, a manual tool may be used instead of the electric tool.

  And since the main-body part 12 is a flat and elongate shape, the main-body part 12 can be inserted in a narrow work space, and the bolt loosening operation | work can be performed easily. Furthermore, since there is no need to move the main body 12 in the front-rear and left-right directions as in the conventional example, there is an advantage that it can be used even in places with many obstacles.

DESCRIPTION OF SYMBOLS 1 Socket wrench 2 Grip 3 Operation rod 4 Pin 5 Connection rod 6 Shaft part 7 Socket mounting part 8 Socket 9 Fitting part 11 Bolt loosening tool 12 Main body part 13 1st rotation part 13a Upper end part 13b Lower end part 14 2nd rotation Part 14a Upper end part 14b Lower end part 15 Interlocking means (belt)
16 Plate-shaped member 17 Screw 18 Side plate 19 Base plate 19a, 19b Extension portion 20 Screw 21 Ball 22 Ring portion 23 Fitting portion 24 Shaft portion of rotating tool 25 Ball 26 Ring portion 27 Socket mounting portion 28 Screw hole 29 Socket 30 Recess 31 Screw hole

Further, the main body has a configuration in which two upper and lower plate-like members respectively disposed along both end portions of the first rotating portion and both end portions of the second rotating portion are screwed together. thing,;
A rectangular base plate is disposed at the base of the plate-like member, and the base plate has an extending portion that extends upward and downward from the upper and lower plate-like members, respectively. The base plate and the plate member are screwed together;
Side plates are disposed along the long sides of the plate-like member;
The interlocking means is a belt or a chain;
Is included.

The main body portion has a configuration in which two upper and lower plate-like members respectively disposed along both end portions of the first rotating portion and both end portions of the second rotating portion are screwed to each other. This has an excellent effect that the flat and long shape can be formed firmly and robustly.

Claims (5)

It is a bolt loosening tool used when performing bolt loosening work in a narrow work space,
The bolt loosening tool is
Provide a first rotation part for input on the base side of the flat and long body part, provide a second rotation part for output on the tip side,
The first rotating part and the second rotating part are connected to each other by interlocking means so that when the first rotating part is rotated, the second rotating part is interlocked and rotated. Configured,
In the central part of the first rotating part, a fitting part for fitting the shaft part of the rotating tool is provided,
The second rotating part is provided with a socket mounting part,
A bolt loosening tool, wherein a socket to be fitted to the head of the bolt is detachably attached to the socket attaching portion. The main body has a structure in which two upper and lower plate members disposed along both ends of the first rotating portion and both ends of the second rotating portion are screwed to each other. The bolt loosening tool according to claim 1, wherein the tool is a bolt loosening tool. A rectangular base plate is disposed at the base of the plate member,
The base plate has an extending portion that extends upward and downward from the upper and lower plate-like members, respectively.
The bolt loosening tool according to claim 2, wherein the base plate and the plate-like member are screwed to each other. The side plate is arrange | positioned along the long side of the said plate-shaped member. The bolt loosening tool of Claim 2 characterized by the above-mentioned. The bolt loosening tool according to claim 1, wherein the interlocking means is a belt or a chain.

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