JP2011067899A - Tool connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an entire tool body 13 or attachment 12 from dropping off from a rotary tool 10 even when a shank 14 is broken, a connection part of the tool body 13 and the shank 14 is damaged, or a rotary head 11 of the rotary tool 10 is damaged in the attachment 12 for the rotary tool 10. <P>SOLUTION: A tool connector includes an input side mounting part 2 windingly mountable on the rotary head 11 of the rotary tool 10, an output side mounting part 3 windingly mountable on the attachment 12 mounted on the rotary head 11 of the rotary tool 10, and a connection section 4 connecting the input side mounting part 2 and the output side mounting part 3 to each other along the axis of the rotary head 11 and the attachment 12. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a tool connector that can reliably hold the connection state between attachments to a rotary tool.

Attachments such as box wrench, bit holder, drill chuck, hexagon wrench, etc. are attached to handy type work machines (hereinafter referred to as “rotary tools”) such as electric or pneumatic drivers, impact drivers, or drills. It is well known to use.
In this type of attachment, a shank (a polygonal or circular axis such as a hexagonal cross section) protrudes from the rear end of the tool body, and this shank is used as a rotating head (anvil part or chuck part) of the rotary tool. Etc.) to attach to a rotating tool.

Conventionally, this attachment has been secured by preventing the connecting part between the tool body and the shank from being damaged or escaping during work with a rotary tool (especially in the case of impact drivers, etc.). A structure that can be stopped (a coupling force is obtained) has been proposed (see Patent Document 1).
As a result of the conventional proposed structure, the attachment of the tool body and the shank can be reliably prevented from coming off as an attachment. As a result, the connection part can be damaged or escaped while working with a rotating tool. The problem of the tool body falling as a cause has been resolved.

However, when the shank is broken or the rotary head of the rotary tool is damaged, it is assumed that the tool body or the attachment is detached from the rotary tool as a whole. Under such an assumption, the tool body or the attachment may fall as a whole during the operation with the rotary tool.
In addition, when the attachment is a shaft-like one such as a driver bit, a structure in which another type of attachment such as a box wrench having a bearing hole at the tail portion can be attached to and detached from the tip is known. As a device used for this known structure, a stopper has been proposed for the purpose of ensuring the connection state between both attachments (see Patent Document 2).

This retainer is made of rubber and formed into a cylindrical shape. The shaft attachment (driver bit, etc.) is connected to a part where an attachment (box wrench, etc.) having a bearing hole at the tail is connected to both of them. It is to be externally fitted in close contact so as to straddle.
That is, a small-diameter hole for externally fitting a shaft-like attachment (driver bit or the like) is provided on one end side of the stopper, and an attachment (box wrench or the like) having a bearing hole at the tail is provided on the other end side. A large-diameter hole that fits around the tail is provided, and the small-diameter hole and the large-diameter hole communicate with each other.

Japanese Patent No. 2501744 JP 2000-24493 A

Needless to say, the stopper according to the conventional proposal is effective only when an attachment (box wrench or the like) having a bearing hole at its tail is connected to a shaft-like attachment (driver bit or the like).
That is, it is not possible to expect any removal preventing effect (drop-off preventing effect) when a variety of attachments are mounted on the rotary tool.

Therefore, if the shank breaks in the attachment, the connecting portion between the tool body and the shank is damaged, or the rotating head of the rotating tool is damaged during the work with the rotating tool, the tool body or the attachment As a whole, it is assumed that the tool is detached from the rotary tool.
Therefore, under such an assumption, the problem that the tool body or the attachment may fall as a whole during the operation with the rotary tool still remains unsolved.

  The present invention has been made in view of the above circumstances, and in the unlikely event that the shank breaks in the attachment, the connecting portion between the tool body and the shank is damaged, or the rotary head of the rotary tool is damaged However, an object of the present invention is to provide a tool connector that can prevent the tool body and the attachment from falling as a whole from the rotating tool.

In order to achieve the above object, the present invention has taken the following measures.
That is, the tool connector according to the present invention can be mounted in a winding shape on an input side mounting portion that can be wound around the rotary head of the rotary tool and an attachment mounted on the rotary head of the rotary tool. An output-side mounting portion; and a connecting portion that interconnects the input-side mounting portion and the output-side mounting portion along the rotation axis of the rotary head and the attachment.

With this configuration, the input side mounting portion is wound around the rotary head of the rotary tool, and the output side mounting portion is wound around the attachment around the rotary head. In this case, the input side mounting portion and the output side mounting portion are connected via the connecting portion.
Therefore, even if the shank breaks in the attachment, the connecting part between the tool body and the shank is damaged, or the rotating head (anvil part or chuck part) of the rotating tool is damaged, the tool body is removed from the rotating tool. And the attachment can be prevented from falling as a whole.

Note that it is preferable that at least one of the mounting portions (preferably both mounting portions) is provided with a non-slip on the inner surface during winding.
By doing in this way, there exists an advantage which can mount | wear firmly, without producing the slip with respect to rotation, or the slip of an axial direction.
In addition, at least one of the mounting portions (preferably both mounting portions) is mainly composed of a flexible winding strip, and one surface of the winding strip is arranged in the longitudinal direction thereof. A male member and a female member of the hook-and-loop fastener are arranged side by side, and a male end and a female member of the hook-and-loop fastener are inserted into one end portion of the winding band through the free end portion on the other end side. What is necessary is just to be provided with the ring tool which is supported so that it may fold back so that it may oppose.

In this way, the operation for attachment and removal is easy, and there is an advantage that the length adjustment at the time of attachment (inner diameter adjustment of the winding with respect to the attachment portion) can be adjusted as a free size.
When such a structure in which the ring device and the male and female members of the hook-and-loop fastener are provided is used for both the input side mounting portion and the output side mounting portion, the input side mounting portion and the output side mounting portion are common. It can be formed as a (same) structure. Therefore, there is an advantage that the manufacturing cost can be reduced and the use at the time of use is eliminated, which makes it easy.

  Even if the tool connector according to the present invention should break the shank in the attachment, damage the connecting part between the tool body and the shank, or damage the rotating head of the rotating tool, And the attachment can be prevented from falling as a whole.

It is the perspective view which showed the mounting condition about 1st Embodiment of the tool coupling tool which concerns on this invention. It is the side view which showed the use condition about 1st Embodiment of the tool coupling tool which concerns on this invention. It is the side view which showed 1st Embodiment of the tool coupling tool which concerns on this invention. It is an AA arrow directional view of FIG. It is a BB line arrow directional view of FIG. It is the perspective view which showed 2nd Embodiment of the tool coupling tool which concerns on this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a first embodiment of a tool connector 1 according to the present invention. As shown in FIGS. 4 and 5, the tool connector 1 includes an input side mounting portion 2, an output side mounting portion 3, and a connecting portion 4 that connects both the mounting portions 2 and 3. .
As shown in FIGS. 1 and 2, the input side mounting portion 2 has a rotary head 11 (anvil) for a rotary tool 10 such as an electric screwdriver, an electric impact screwdriver, an electric drill (or an air driven type thereof). Part, chuck part, etc.). On the other hand, the output side mounting portion 3 is for mounting in a wound manner on the attachment 12 mounted on the rotary head 11 of the rotary tool 10.

The attachment 12 illustrated in FIGS. 1 and 2 is a box wrench. Therefore, this attachment 12 has a tool body 13 in which a hexagonal recess 13a for fitting a nut is formed at the tip of a cylindrical body, and a shank 14 is coaxially arranged from the rear part of the tool body 13. Projected.
The shank 14 is a shaft whose cross-sectional shape is a circle or a polygon such as a hexagon, which allows the rotary tool 10 to be mounted on the rotary head 11 and serves as a rotary shaft (support shaft) during work. It is.

In the tool connector 1, it is preferable that the input side mounting portion 2, the output side mounting portion 3 and the connecting portion 4 are formed integrally with each other, and the formation material thereof is natural leather, synthetic leather, or the like. It is preferable to adopt.
In addition, as this forming material, rubber, soft resin, fabric, or metal (chain-like) may be used as long as the stretchability is suppressed and the properties such as excellent tensile strength and resistance to tearing are satisfied. In addition, a structure knitted in a net shape, a structure in which chip pieces are connected like a watch belt, or the like may be employed.

The input side mounting portion 2 is formed mainly of a winding strip 20 formed in a flexible strip shape. One end portion of the winding band 20 is provided with a ring tool 21 formed by bending a wire wire into a rectangular frame shape. The other end side of the winding band 20 opposite to the side where the ring 21 is provided is a free end portion 22.
The ring 21 is formed in a size that allows the free end 22 of the winding band 20 to be inserted into the frame. In addition, when the winding band 20 is folded back with the free end portion 22 inserted through the loop member 21, the inner side of the folding can be supported by the ring member 21. Further, the wire rod forming the loop member 21 is swingably held by the winding band 20 via a portion 21 a penetrating in the band width direction of the winding band 20.

The free end 22 of the winding band 20 is chamfered in a semicircular shape or the like, and can be easily and quickly inserted into the ring tool 21. It should be noted that it may be formed in a triangular shape in a tapering direction, may be chamfered in a square shape, or may not be provided with any of these measures.
As shown in FIGS. 3 and 4, a male member 23 and a female member 24 of a hook-and-loop fastener are arranged side by side along the longitudinal direction on one surface of the winding band 20. Therefore, when the winding band 20 is folded back while being inserted into the ring 21 from the free end 22 side, the male member 23 and the female member 24 of the hook-and-loop fastener can be opposed and engaged.

In the example shown in the figure, the free end 22 side is a male member 23, and the one close to the ring 21 is a female member 24. However, the relative arrangement of the male member 23 and the female member 24 is particularly limited. It is not a thing.
As shown in FIGS. 3 and 5, the other surface of the winding band 20 is provided with a non-slip 25 on the inner surface during winding. The anti-slip 25 is for preventing slippage in the circumferential direction (rotation direction) and the axial direction of the rotary head 11 of the rotary tool 10.

  When the winding band 20 is formed of rubber, silicon, or the like, the antiskid 25 can be formed by appropriately providing dot-like or linear protrusions in a dispersed arrangement. Further, when the winding band 20 is formed of other materials, a sheet in which dot-like or linear protrusions made of rubber, silicon, or the like are appropriately dispersed and arranged is wound by adhesion or sewing. By sticking on the belt 20, the anti-slip 25 can be formed.

  In addition, it is good to arrange | position the male member 23 and the female member 24 in the hook-and-loop fastener at predetermined intervals, and to provide the folding space 27 (refer FIG. 4) between them. However, the fact that the folding space 27 is formed does not limit the folding by the ring 21 in the folding space 27. Naturally, such a folding space 27 does not necessarily have to be formed.

The output side mounting portion 3 is also substantially the same in structure and material as the input side mounting portion 2 except that the attachment target is the attachment 12.
That is, the output side mounting portion 3 is mainly composed of a winding band 30, a ring tool 31 is provided at one end portion of the winding band 30, and a free end portion 32 is provided at the other end side. The ring tool 31 is swingable through a portion 31 a that penetrates the winding band 30 in the band width direction.

Further, as shown in FIGS. 3 and 4, a male member 33 and a female member 34 of a hook-and-loop fastener are arranged in parallel on one surface of the winding band 30 via a folding space 37, as shown in FIGS. As described above, a non-slip 35 is provided on the other surface of the winding band 30.
The connecting portion 4 connects the input side mounting portion 2 and the output side mounting portion 3 in a direction along the rotation axis of the rotary head 11 and the rotation axis of the attachment 12 in the rotary tool 10. The position where the connecting part 4 is provided with respect to the input side attaching part 2 and the output side attaching part 3, the number of the connecting parts 4 arranged, the thickness (width dimension) of the connecting part 4 are not particularly limited. .

As shown in FIGS. 1 and 2, the tool connector 1 having such a configuration is configured such that the input side mounting portion 2 is wound around the rotary head 11 of the rotary tool 10 so as to wind around the rotary head 11. After the attachment 12 is mounted, the output side mounting portion 3 is mounted around the attachment 12 in a wound shape.
In order to mount the input side mounting portion 2 on the rotary head 11, the free end 22 is inserted into the ring tool 21 while the winding band 20 is wound around the rotary head 11, and the winding band 21 is used to insert the free band 22. 20, the male member 23 and the female member 24 of the hook-and-loop fastener are simply engaged with each other. At this time, the engagement position between the male member 23 and the female member 24 is adjusted as appropriate so that the winding band 20 is tightly wound around the rotary head 11.

  Similarly, in order to mount the output side mounting portion 3 to the attachment 12, while winding the winding band 30 around the tool main body 13, the free end portion 32 is inserted into the ring tool 31, and the winding tool 31 winds it. The loop 30 is folded back, and the male member 33 and the female member 34 of the hook and loop fastener are simply engaged with each other. At this time, the engagement position between the male member 33 and the female member 34 is appropriately adjusted so that the winding band 30 is tightly wound around the tool body 13.

As described above, the operation for mounting the tool connector 1 is very easy, and the length adjustment (inner diameter adjustment of the winding with respect to the mounting portion) at the time of mounting can be adjusted in a free size. Also, the removal of the tool connector 1 is very easy since it is merely an operation reverse to the above.
When the rotary tool 10 is operated after the tool connector 1 is mounted on the rotary tool 10 and the attachment 12 as described above, the tool connector 1 also rotates together with the rotary head 11 and the attachment 12. To come. At this time, since the tool connector 1 is thinly and compactly wound around the rotary head 11 and the attachment 12, there is no problem with the rotary tool 10, the attachment 12, and the operator.

  During this operation, the shank 14 of the attachment 12 is broken, the connecting portion between the tool body 13 and the shank 14 of the attachment 12 is damaged, or the rotary head 11 of the rotary tool 10 is damaged. In the tool connector 1, since the input side mounting portion 2 and the output side mounting portion 3 are connected via the connecting portion 4, the tool body 13 and the attachment 12 do not fall as a whole from the rotary tool 10. .

As apparent from the above description, the tool connector 1 is extremely simple in structure, and can be reduced in terms of material cost and manufacturing cost, so that it is extremely easy to implement. Nevertheless, the work effect obtained by this (preventing the fall of the tool body 13 and the attachment 12 as a whole) is tremendous.
FIG. 6 shows a second embodiment of the tool connector 1 according to the present invention. In the tool connector 1 of the second embodiment, two locks are provided for a ring-shaped cable member 50 that produces a strong elastic contraction action against an external force such as a rubber ring that expands the diameter of the ring portion. That is, the tools 51 and 52 are mounted in an inserted state. That is, the input-side mounting part 2 is formed by one lock tool 51 and a small ring portion 53 formed on the rope member 50 thereby, and the other lock tool. 52 and the small ring portion 54 formed on the cord member 50 thereby forming the output side mounting portion 3 and the cord member 50 between the lock members 51 and 52 forming the connecting portion 4. It has become.

Each lock tool 51, 52 is provided so that an operation button 57 can be pushed with respect to the main body portion 56 having the string passage hole 55, and the inside of the string passage hole 55 is opened only when the operation button 57 is pressed. When not pressed, the closed state or the state in which the cord member 50 in the string passage hole 55 is locked is held.
Therefore, in these lock tools 51 and 52, the ring portions 53 and 54 are reduced in diameter or expanded by moving the insertion positions of the lock tools 51 and 52 along the cable member 50 while pressing the operation button 57. You can make it diameter.

By such diameter-reducing operation or diameter-expanding operation of the ring portions 53, 54, the input side mounting portion 2 is mounted around the rotary head 11 of the rotary tool 10 in a wound manner, or removed, or attached. The output side mounting portion 3 is mounted around or removed from 12 around the output side.
Other configurations and operational effects are substantially the same as those of the first embodiment, and detailed description thereof is omitted here.
[Others]
The present invention is not limited to the above-described embodiment, and can be appropriately changed according to the embodiment.

The attachment 12 may be a bit holder that can hold a driver bit, a drill bit, or the like, a drill chuck that can hold a drill, or a hex wrench.
In the input side mounting portion 2, the surface fastener (male member 23 and female member 24) described as a structure for winding around the rotary head 11 of the rotary tool 10, or in the output side mounting portion 3, the tool body 13 of the attachment 12 is wound. The hook-and-loop fasteners (male member 33 and female member 34) described as the structure for this are not limited.

For example, a structure in which an arbitrary position of the free end 22 is sandwiched and strongly pressed is provided instead of the ring 21. Alternatively, a structure may be adopted in which a plurality of holes are provided in the longitudinal direction with respect to the free end portion 22 and a buckle in which a stopper pin is inserted into the selected hole is provided instead of the ring 21.
The input side mounting part 2, the output side mounting part 3, and the connecting part 4 may be formed separately from each other and connected between each other by a ring, a chain, or the like. In some cases, the connecting portion 4 may be formed by a link, a chain, or the like, and may be connected to the input side mounting portion 2 or the output side mounting portion 3 in that situation. Moreover, although the case where the anti-skid 25 was provided in the surface used as the inner side of the winding belt | band | zone 20 is illustrated, it may be bonded and integrated on the raw material base of the winding belt | band | zone 20.

DESCRIPTION OF SYMBOLS 1 Tool connection tool 2 Input side mounting part 3 Output side mounting part 4 Connection part 10 Rotating tool 11 Rotating head 12 Attachment 20 Winding band 21 Ring tool 22 Free end part 23 Male member 24 Female member 25 Non-slip 30 Winding band 31 Ring 32 Free end 33 Male member 34 Female member 35 Non-slip

Claims (3)

An input side mounting portion (2) that can be wound around the rotary head (11) of the rotary tool (10);
An output side mounting portion (3) that can be wound around the attachment (12) mounted on the rotary head (11) of the rotary tool (10);
The input side mounting portion (2) and the output side mounting portion (3) have a connecting portion (4) for interconnecting the rotary head (11) and the attachment (12) along the rotation axis. A tool connector characterized by that.   The tool connector according to claim 1, wherein at least one of the mounting portions (2) (3) is provided with a non-slip (25) (35) on an inner surface during winding.   At least one of the mounting portions (2) and (3) is mainly composed of a winding band (20) (30) having flexibility and formed in a band shape, and the winding band (20) (30) A male member (23) (33) and a female member (24) (34) of a hook-and-loop fastener are juxtaposed along the longitudinal direction on one surface, and one end of the winding band (20) (30). The free end portions (22) and (32) on the other end side are inserted into the portion, and the male members (23) and (33) and the female members (24) and (34) of the hook and loop fastener are opposed to each other. The tool coupling tool according to claim 1 or 2, further comprising a ring tool (21) (31) that is supported in a folded state.

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