JP2009274157A - Tool fall preventing connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool fall preventing connector which connects a tool to an operator, and avoids increase in parts count and degradation of workability. <P>SOLUTION: The tool fall preventing connector is formed of a first sleeve piece 3A, a second sleeve piece 3B, and an external sleeve 3C. The first sleeve piece 3A has: deflectable and deformable engaging claws 3A1 arranged on a peripheral surface thereof on one side in an axial direction; and step portions 3A2, 3A3 formed therein on both sides in the axial direction. Thus an engaging die 20 and an engaging portion 4B1 (5B1) attached to tips of a wire 2 inserted into the first sleeve piece, and a hook 4 (5) abut on the steps. The second sleeve piece 3B is circumferentially divided from the first sleeve piece 3A at a location in the axial direction, and has formed thereon part of a step portion 3B1 on which the engaging portion 4B1 (5B1) attached to the tip of the hook 4 (5) is abutted. The external sleeve 3C is fitted onto peripheral surfaces of the first and second sleeve pieces matched with each other in a circumferential direction. Thus the connector is assembled by fitting the external sleeve 3C onto the peripheral surfaces of the first and second sleeve pieces in a matched state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a tool drop prevention connector, and more particularly to a structure of a connector used when a tool such as a wrench is suspended from a human body.

The wrench, which is one of the tools used for tightening and releasing the nut, is used in various places. For example, it is also used for work at a high place.
When working at a high place, hang the tool on the operator's belt to prevent the tool you brought from falling, or hang the storage bag on the belt and place the tool in the bag. Such measures are taken.
When it is put in a storage bag, there is an inconvenience that it takes time to take it out from the bag during work.

  Then, the connection tool which can hang a tool directly on an operator's belt etc. is proposed (for example, patent documents 1-3).

In Patent Document 1, for a tool having a shaft portion such as a driver, a wire having a ring that can be inserted into the shaft portion at one end is used as a connection tool, and the ring inserted into the shaft portion is made of rubber. A configuration that prevents the retaining ring from coming off is disclosed.
In Patent Document 2, unlike a screwdriver described above, when a wrench that does not have a shaft portion is used as a tool, a wire having a screw portion inserted into a hole formed on the wrench side at one end in an extension direction is connected. As a tool, the wrench is sandwiched and held by a flange and a nut screwed into the screw portion inserted into the wrench side hole, while the loop portion formed at the other end in the tire extending direction is held by the operator's belt The structure connected to the side is disclosed.
In Patent Document 3, when a screwdriver is used as a tool, a spiral coil having an eggplant ring that is hooked in a hole formed in a pull string locking member that is inserted into a shaft portion at one end in the extending direction is disclosed. A configuration is disclosed in which a loop portion formed at the other end in the extending direction of the wire is connected to an operator's belt or the like, which is used as a connecting tool.

Japanese Utility Model Publication No. 6-75672 JP 2006-231502 A JP 2001-322075 A

  As disclosed in Patent Documents 1 and 3, the wire used as a connector is provided with a latching member such as a ring or an eggplant ring at one end in the extending direction, and can be locked with the tool side. It has become.

By the way, such a latching member is often fixed to the wire side by caulking or the like.
However, the latch member may be rotated around a so-called wire that freely changes its posture in a direction perpendicular to the wire extension direction, rather than a state in which the posture does not change while being fixed to the wire.
This is to prevent the repulsive force from the tool side against the operator from being impacted by causing the tool to change its posture when an external force is applied to the tool, unlike when the posture is fixed. is there. For example, when the external force when the operator touches the tool acts on the tool, the repulsive force on the operator can be reduced if the posture of the tool changes in a direction to release the external force.

  However, conventionally, as disclosed in patent documents, the latch member is fixed to the wire, and the rotation of the latch member often depends on the kinking of the wire. For this reason, there was a limit in reducing the repulsive force from the tool side that the worker receives.

  An object of the present invention is to provide a tool drop prevention connector that can achieve a free posture change of a tool that is connected and suspended by a simple configuration in view of the problems in the conventional tool drop prevention connector. There is to do.

In order to achieve this object, the present invention has the following configuration.
(1) It has a locking claw that can be bent and deformed on the outer periphery on one side in the axial direction, and has an engaging part of a locking piece or a latch attached to the tip of a wire inserted into the inside. A first sleeve piece in which a stepped portion is formed on both sides in the axial direction;
A second sleeve piece that is divided in the circumferential direction at a part in the axial direction of the first sleeve piece, and a part of a stepped portion that abuts the engaging portion attached to the tip of the latch;
An outer sleeve fitted to the outer periphery of the first and second sleeve pieces matched in the circumferential direction;
The outer sleeve has an engaging step portion that is engageable with the locking claw formed on the first sleeve piece, formed on an inner surface on one axial side, and has outer peripheries of the first and second sleeves. Is formed on the inner surface on the other side in the axial direction,
In a state where the second sleeve piece is put on the first sleeve piece in a state where the step of the first sleeve piece is in contact with the engaging piece of the wire locking piece and the latching tool, respectively. The outer sleeve is fitted to the outer peripheries of the first and second sleeve pieces from the hole side located on the other side in the axial direction, and the outer claw is provided on the engaging claw provided on the first sleeve piece. A tool fall prevention coupling device, wherein the outer sleeve is integrated in a state of surrounding the first and second sleeve pieces by engaging the engagement step portion on the sleeve side.

(2) The engaging claw formed on the first sleeve piece is bent and deformed toward the inner surface of the outer sleeve when the engaging step portion of the outer sleeve passes, and the engaging step portion The tool drop prevention coupling tool according to (1), wherein the engagement step portion is locked by a shape restoring force at the time of passing.

(3) The tool drop prevention connector according to (1), wherein the core wire of the wire is a stainless steel wire.

According to the present invention, the second sleeve piece is covered with the stepped portion formed in the first sleeve piece in a state where the engaging piece of the wire locking piece or the latching member is abutted. The outer sleeve is fitted to the outer periphery of the second sleeve piece to complete the tool drop prevention connector.
Since the locking piece of the first sleeve is pushed and moved during the insertion process of the outer sleeve and deformed, the shape can be restored and the engaging step of the outer sleeve can be locked. The prevention of the diffusion of the first and second sleeve pieces and the prevention of the removal of the outer sleeve are possible only by the insertion operation of the outer sleeve.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is an external view of a tool dropping prevention connector 1 according to the present invention.
The tool drop prevention tool 1 includes a wire 2, a connecting tool 3 attached to both ends of the wire 2 in the extending direction, and hooks 4 and 5 such as eggplant rings attached to the wire 2 via the connecting tool 3. It consists of and.

  The wire 2 is a cord in which a twisted wire made of stainless steel or the like having an outer diameter of 0.81 mm is used as the core wire 2A, and the outer periphery thereof is covered with polyurethane, and the middle in the extending direction is brazed in a coil shape (FIG. 1). In the range indicated by the symbol L).

Among the latches 4 and 5, the latch 4 is shown in FIG. 1 (B), and the latch 5 is shown in FIG. 1 (C).
As shown in FIG. 1B, the latching tool 4 is an eggplant ring having a locking portion 4A that is movable in a direction that allows other members to be pushed in. A rod portion 4B provided with a flange 4B1 used as an engaging portion to be locked to the connecting tool 3 side is integrated with the lower surface of the base portion of the latching tool 4.
As shown in FIG. 1 (C), the latch 5 has a direction that allows other members to be pushed around the support shaft 5A1 of the main body and a direction according to the operation direction (arrow direction) of the operation piece 5A2. An eggplant ring having a movable locking portion. A rod portion 5B provided with a flange 5B1 used as an engaging portion to be locked to the connector 3 side is integrated with the lower surface of the base portion of the latching device 5.

FIGS. 2 and 3 are views showing the configuration of the main part of the connector 3. In FIG. 2, the connector 3 includes a first sleeve piece 3A, a second sleeve piece 3B, and an outer sleeve 3C.
As shown in FIG. 3, the first sleeve piece 3 </ b> A is provided with a locking claw 3 </ b> A <b> 1 that can be bent and deformed on the outer periphery on one side in the axial direction.
As shown in FIG. 2, the first sleeve piece 3 </ b> A is equipped with a locking piece 20 fixed to the end portion of the wire 2 and an eggplant ring 4 (5) that is a latch. Step portions 3A2 and 3A3 that abut against the flange 4B1 (5B1) that is the engaging portion are formed on both sides in the axial direction.

As the second sleeve piece 3B, a piece part that is divided in the circumferential direction at a part in the axial direction of the first sleeve piece 3A is used, and the first sleeve piece 3A is covered with the first sleeve piece 3A. And can form a cylindrical shape.
A step portion 3B1 corresponding to the step portion 3A3 on the first sleeve piece 3A side is formed inside the second sleeve piece 3B. Then, the flange 4B1 or 5B1, which is an engaging portion provided on the lower surface of the base of the latch 4 or the latch 5, abuts against the steps 3B1 and 3A3.

A fitting convex portion 3A4 and a fitting concave portion 3B2 are formed on surfaces of the first sleeve piece 3A and the second sleeve piece 3B that face each other in the circumferential direction.
The fitting convex portion 3A4 and the fitting concave portion 3B2 can be positioned in the axial direction of the first and second sleeve pieces 3A and 3B by being fitted to each other.

  The step portions 3A2, 3A3 and 3B1 provided on the first and second sleeve pieces 3A and 3B have an inner diameter slightly larger than the outer diameter of the rod portion 4B (5B) of the latch 4 (5). The penetrating portions 3A10 and 3B10 are formed. As a result, the latch 4 (5) can freely rotate the latch 4 (5) even when the first and second sleeve pieces 3A, 3B are integrated.

On the other hand, in the outer sleeve 3C, a step portion 3C1 that can be engaged with a locking claw 3A1 located on the first sleeve piece 3A side is formed on one side in the axial direction. The step portion 3C1 protrudes inward and can enter the rod portion 3A11 continuing to the locking claw 3A1 on the first sleeve piece 3A side.
On the other axial side of the outer sleeve 3C, a hole 3C2 having an inner diameter that can be fitted to the outer peripheral surfaces of the first and second sleeve pieces 3A and 3B is formed.

Since the present embodiment is configured as described above, the connector 3 is attached to one end of the wire 2.
The coupling tool 3 abuts the locking piece 20 on the wire 2 and the flange 4B1 (5B1) of the latching tool 4 (5) against the step portions 3A2 and 3A3 provided on the first sleeve piece 3A. By covering the second sleeve piece 3B above, the locking piece 20 and the latch 4 (5) are sandwiched and integrated.

  The latch 4 (5) located in the first and second sleeve pieces 3A and 3B is abutted against the step portions 3A3 and 3B1 of the first and second sleeve pieces 3A and 3B. Therefore, the posture of the latch 4 (5) can be changed.

The outer sleeve 3C is inserted into the integrated first and second sleeve pieces 3A and 3B.
As shown by the arrow in FIG. 2, the outer sleeve 3C is inserted with the hole 3C2 side facing the locking claw 3A1 side of the first sleeve piece 3A. When the outer sleeve 3C is inserted, the locking claw 3A1 of the first sleeve 3A is pushed and bent inside the outer sleeve 3C, and retracts to a position that does not interfere with the movement of the engagement step portion 3C1 of the outer sleeve 3C. .
When the stepped portion 3C1 finishes passing through the position of the locking claw 3A1, the locking claw 3A1 returns to the original position by the shape restoring force and locks the engaging stepped portion 3C1 of the outer sleeve 3C, thereby causing the outer sleeve 3C. Is prevented from moving in the axial direction.
The outer sleeve 3C surrounds the outer periphery of the first and second sleeve pieces 3A and 3B and prevents the sleeve pieces 3A and 3B from diffusing, thereby constituting the connector 3.

  According to such an embodiment, since the first sleeve 3A is covered with the second sleeve piece 3B and then the outer sleeve 3C is simply inserted, the connecting tool 3 can be assembled. The operation | work which joins two sleeve pieces can be made unnecessary. Thereby, for example, the connecting tool 3 can be configured without requiring the ultrasonic welding or the bonding work used when the sleeve piece is made of resin, so that the assembly workability can be improved.

  The latches 4 and 5 are classified according to the type such as the weight of the tool that is the object to be suspended. For this reason, various types of coupling tools 3 are selected, but in this embodiment, the outer sleeve 3C is inserted into the first and second sleeve pieces 3A and 3B when the selected coupling tool 3 is assembled. It can be prepared by work alone. Thereby, a connection tool can be produced by a simple operation regardless of the type of the connection tool.

It is an external view which shows the mounting state of the coupling tool for tool fall prevention by this invention. It is sectional drawing which shows the principal part structure of the connector for tool fall prevention by this invention. It is a disassembled perspective view of the tool fall prevention coupling tool by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tool fall prevention tool 2 Wire 2A Core wire 3 Tool fall prevention connection tool 3A 1st sleeve piece 3A1 Locking claw 3A2, 3A3 Step part 3A10, 3B10 Through part 3B 2nd sleeve piece 3B1 Step part 3C Outer sleeve 3C1 step Part 3C2 Hole part 4, 5 Hook 4B1, 5B1 Flange used as engaging part 20 Locking piece

Claims (3)

A locking claw that can be bent and deformed on the outer circumference on one side in the axial direction, and a step for abutting an engaging part of a locking piece or a latch attached to the tip of a wire inserted inside this First sleeve pieces having portions formed on both sides in the axial direction;
A second sleeve piece that is divided in the circumferential direction at a part in the axial direction of the first sleeve piece, and a part of a stepped portion that abuts the engaging portion attached to the tip of the latch;
An outer sleeve fitted to the outer periphery of the first and second sleeve pieces matched in the circumferential direction;
The outer sleeve has an engaging step portion that is engageable with the locking claw formed on the first sleeve piece, formed on an inner surface on one axial side, and has outer peripheries of the first and second sleeves. Is formed on the inner surface on the other side in the axial direction,
In a state where the second sleeve piece is put on the first sleeve piece in a state where the step of the first sleeve piece is in contact with the engaging piece of the wire locking piece and the latching tool, respectively. The outer sleeve is fitted to the outer peripheries of the first and second sleeve pieces from the hole side located on the other side in the axial direction, and the outer claw is provided on the engaging claw provided on the first sleeve piece. A tool fall prevention coupling device, wherein the outer sleeve is integrated in a state of surrounding the first and second sleeve pieces by engaging the engagement step portion on the sleeve side.   The engaging claw formed on the first sleeve piece is bent and deformed toward the inner surface of the outer sleeve when the engaging step portion of the outer sleeve passes, and the engaging step portion has finished passing. 2. The tool drop prevention coupling tool according to claim 1, wherein the engaging stepped portion is locked by a shape restoring force at a point in time.   2. The tool drop prevention connector according to claim 1, wherein the core of the wire is a stainless steel wire.

Images