JP2017001132A - Fall prevention device for portable article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fall prevention device for a portable article with workability enhanced by increasing a degree of freedom for fitting position to a user's belt and the like.SOLUTION: A fall prevention device for a portable article comprises: a case; and a reel 2 for winding a string-like member 4 disposed in the case, and capable of being connected, at its end, to the portable article to be prevented from falling, by energizing force of an a spring. The case comprises: an attachment base 11; and a case body 13 storing the reel 2, and provided with a drawing opening 130 on one side surface through which the string-like member 4 is pulled out. The case 13 is removably attached to the attachment base 11.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a portable object fall prevention tool used for connecting a portable object in order to prevent a portable object such as a tool from being dropped and improve safety.

  For example, when a worker drops a tool from his / her hand while working at a high place at a construction site or the like, a conventional portable object fall prevention tool (tool fall prevention) is used to ensure safety. As a tool), a reel that is energized in a rotational direction in which a wire is wound and a wire is wound by a retracting spring is incorporated in a case that is locked to a belt worn by an operator on the waist. 2. Description of the Related Art There is known one provided with a locking tool for attaching a tool to the tip of a wire drawn out of a case from a reel.

  This type of portable article fall prevention tool is used by fixing a case to a belt or the like worn on the waist by an operator and attaching a tool to a locking tool at the tip of a wire when working at a high place. Then, as shown in FIG. 9, when the worker A drops the tool T from his hand during the work at a high place, the reel (in the case 100 attached to the waist belt B of the worker A) ( (Not shown), the wire 101 is pulled out by the fall of the tool T, and accordingly, the retracting spring built in the reel is stored, so that the fall of the tool T can be stopped halfway (described below) Patent Document 1).

Japanese Utility Model Publication No. 6-38995

  However, since this type of portable article fall prevention device has a drawer opening through which the wire 101 is pulled out on one side of the case 100, for example, in the example shown in FIG. 9, the case 100 is mounted on the right side of the waist. In the example shown in FIG. 9, the case 100 is attached to the right side of the waist by attaching the case 100 to the right side of the waist. However, when it is mounted on the left side of the waist, the drawer opening 100a faces rearward, so that the usability is deteriorated and the mounting position is restricted. Moreover, when the thing using a string-like body other than the wire 101 is required, it was necessary to replace the entire portable object fall prevention tool with a different specification.

  The present invention has been made in view of the above points, and its technical problem is to attach a portable object in order to avoid danger caused by dropping the portable object such as a tool. An object of the present invention is to improve the usability by increasing the degree of freedom of the user's position of attaching to the waist belt or the like, or the degree of freedom of changing specifications, in the portable article fall prevention device used for this purpose.

  As a means for effectively solving the technical problem described above, a portable article fall prevention device according to the invention of claim 1 is provided in a case and in the case, and a portable article to be fall-prevented is connected to the tip. A reel that winds up a possible string-like body by a biasing force of a spring, and the case includes a mounting base, and a case main body in which the reel is housed and a drawer port is formed on one side to draw out the string-like body. The case main body is detachably attached to the mounting base. Here, the “string-like body” is a general term for strings, wires, ropes, threads, and the like.

  The portable article fall prevention device with the above configuration is equipped with a mounting base in the case on the user's waist belt, etc., and a portable article such as a tool is attached to the tip of the string-like body drawn out of the case. To use. If the user drops this portable item from his / her hand while using the portable item, the reel rotates in the direction of pulling the string-like item by pulling the string-like item by dropping the portable item. Thus, the retracting spring accumulates energy, thereby reducing the falling speed of the portable object and stopping the dropping on the way.

  And since the case in this portable article fall prevention device can be separated into a case main body in which a reel is stored and a mounting base for holding the reel, for example, the mounting base or the case main body is changed and combined with a different specification. This improves usability.

  According to a second aspect of the present invention, there is provided the portable article fall prevention device according to the first aspect, wherein the direction of the drawer opening can be arbitrarily changed according to the mounting direction of the case body with respect to the mounting base. It is.

  According to the configuration of claim 2, the attachment direction of the case body with respect to the attachment base is changed even when the attachment position of the user with respect to the waist belt or the like is opposite to the normal side for some reason, for example, the user is left-handed. As a result, the direction of the outlet can be prevented from being reversed, and the usability is improved.

  According to a third aspect of the present invention, there is provided the portable object fall prevention device according to the first or second aspect, wherein the case main body is fixed between the mounting base and the outer shell that can be coupled to and separated from the mounting base. The mounting base includes a base plate portion that can be fitted to one or the other end surface of the case body, and a hook portion that extends so as to be folded back from the base plate portion, and the outer shell is connected to a tip portion of the hook portion. A first hooking portion that can be hooked and a second hooking portion that can be hooked with the substrate portion are provided.

  The portable object fall prevention device having the configuration according to claim 3 is configured such that the tip of the hook portion is used as the first latching portion of the outer shell while the user's waist belt or the like is passed between the base plate portion and the hook portion of the wearing base. By hanging, the case can be firmly fixed to the waist belt or the like.

  According to a fourth aspect of the present invention, there is provided the portable object fall prevention device according to the third aspect, wherein the second hooking portion is connected to the substrate portion when the first hooking portion is hooked with the tip of the hook portion. It is characterized in that it is locked in the hooked state.

  The portable object fall prevention device having the configuration of claim 4 is configured such that the tip of the hook portion is used as the first hooking portion of the outer shell while the user's waist belt or the like is passed between the base plate portion and the hook portion of the wearing base. In a state where the case is fixed to the waist belt or the like by being latched, the coupling state between the mounting base and the outer shell is maintained by locking the second latching portion in a latched state with the base plate portion. Therefore, the case main body in which the reel is stored is securely held.

  According to a fifth aspect of the present invention, the portable object fall prevention device can be attached to the mounting base in a state where a plurality of case main bodies are connected to each other in the axial direction of the reel. It is characterized by this.

  The portable object fall prevention device having the configuration of claim 5 has a plurality of case main bodies, so that the number of attachments of the portable object fall prevention device around the waist can be increased without increasing the lateral width of the case. .

  According to the portable object fall prevention device of the present invention, the mounting base or the case main body can be changed to one having a different specification, or the direction of the drawer opening in the case main body can be changed, so that the usability is improved. Can do.

It is an external appearance perspective view which shows preferable embodiment of the portable article fall prevention tool which concerns on this invention. FIG. 6 is a perspective view showing a state in which the case is separated into a case main body, a mounting base, and an outer shell in a preferred embodiment of the portable object fall prevention device according to the present invention. It is sectional drawing which shows preferable embodiment of the portable article fall prevention tool which concerns on this invention. It is a figure for demonstrating the mounting structure of the mounting base and outer shell in preferable embodiment of the portable article fall prevention tool which concerns on this invention. It is explanatory drawing which shows the example of mounting | wearing with the portable article fall prevention tool in case a user is right-handed. FIG. 2 is an external perspective view showing a case in which the case main body is in the opposite direction to FIG. 1 in a preferred embodiment of the portable object fall prevention device according to the present invention. It is explanatory drawing which shows the example of mounting | wearing with the portable article fall prevention tool in case a user is left-handed. It is an external appearance perspective view which shows other preferable embodiment of the portable article fall prevention tool which concerns on this invention. It is explanatory drawing which shows the condition in case an operator passes the tool connected to the portable article fall prevention tool and drops it from a hand.

  Hereinafter, preferred embodiments of the portable object fall prevention device according to the present invention will be described with reference to the drawings. As shown in FIGS. 1, 2, and 3, the portable object fall prevention device of this embodiment is a case 1 and a wire that can be attached to the tip of the fall prevention target tool in the case 1. A reel 2 is provided for winding 4 by the urging force of the retracting spring 5. The wire 4 corresponds to the string-like body described in claim 1.

  The case 1 includes a mounting base 11, an outer shell 12, and a case main body 13 that can be coupled and separated from each other. The case main body 13 is fitted and fixed between the mounting base 11 and the outer shell 12. By releasing the coupling of the outer shell 12, the fitting is released and separation is possible.

  The mounting base 11 in the case 1 includes a board part 111, a plate-like hook part 112 extending so as to be folded downward from the upper end of the board part 111, and a metal connection attached to the lower part of the board part 111 with screws 114. The ring ring 113. A plurality of protrusions 111 a extending in the width direction are formed on the surface of the substrate part 111 facing the plate-like hook part 112. The plate-like hook part 112 extends in the width direction and is different from the protrusion 111 a of the substrate part 111. A plurality of protrusions 112a facing the position are formed.

  As shown in FIGS. 2 and 4, a pair of left and right latching step portions 111 c is formed in the opening 111 b opened near the lower end of the substrate portion 111 of the mounting base 11. A pair of left and right hooking projections 112c are formed in the opening 112b opened near the lower end of the hook portion 112.

  As shown in FIGS. 2 and 3, the outer shell 12 of the case 1 has a front plate 121, and extends from the upper portion of the front plate 121 to the back side, and hooks the upper hooked beam 115 of the mounting base 11 at the tip. It consists of a top plate 122 having a possible upper latching claw 122a, a lower first latching claw 123 and a lower second latching claw 124 extending from the lower side of the front plate 121 to the back side, and the side shape is substantially U-shaped. ing. The lower first latching claw 123 corresponds to the first latching portion according to claims 3 and 4, and the lower second latching claw 124 is the second latching hook according to claims 3 and 4. It corresponds to the part.

  As shown in FIG. 4, the lower first latching claw 123 of the outer shell 12 has a tip hook portion 123 a of the plate-like hook portion 112 of the mounting base 11 through an opening 111 b opened at the lower end portion of the substrate portion 111. The hooked protrusion 112c can be hooked, and a pair of lower second hooking claws 124 are provided so as to extend substantially parallel to each other on the left and right sides of the lower first hooking claw 123, and a tip hook 124a is provided. The hooked stepped portion 111c formed on the substrate portion 111 of the mounting base 11 can be hooked. Of these, the lower first hooking claw 123 is engaged with or released from the hooked step portion 111c by elastic bending deformation in the vertical direction, and the lower second hooking claw 124 is formed on the lower surface thereof. By operating the protruding knob 124b, it is elastically bent and deformed in the left-right direction, and the tip flange 124a is engaged with or released from the engagement protrusion 112c.

  The case main body 13 in the case 1 is composed of a pair of shells 131 and 132 coupled to each other by screws 133, and the reel 2 is rotatably accommodated. In the assembled state of the case 1 shown in FIG. 1, it is exposed from the openings on the left and right sides of the substantially U-shaped outer shell 12. A wire lead-out port 130 is provided on one side surface of the left and right side surfaces of the case body 13.

  The case main body 13 (shells 131 and 132) has a symmetrical projection shape in the axial direction of the reel 2. When the case main body 13 is fitted and fixed between the mounting base 11 and the outer shell 12, both end faces 13 a and 13 b of the case main body 13 with respect to the axial direction of the reel 2, that is, the end face of the shell 131 and the shell 132. Either one of the end surfaces is abutted with the substrate portion 111 of the mounting base 11, the other is abutted with the back surface of the front plate 121 of the outer shell 12, and the upper surface 13c forming a cylindrical convex surface is cylindrical. The concave portion 13d formed on the lower surface of the case body 13 is fitted to the lower first latching claw 123 and the lower second latching claw 124 so as to be fitted to the lower surface of the upper surface plate 122 of the outer shell 12 having a concave surface. It has become.

  That is, the case 1 is separated from the separated state shown in FIG. 2, for example, the case body 13 such that one of its both end faces 13 a and 13 b abuts the back surface of the front plate 121 of the outer shell 12. 12 is fitted between the upper surface plate 122 and the lower first hooking claws 123 and the lower second hooking claws 124, and the upper hooking claws 122 a at the tip of the upper surface plate 122 are engaged with the upper hooked beams 115 of the mounting base 11. After that, if the base plate portion 111 of the mounting base 11 is pressed to the case main body 13 side (outer shell 12 side) via the tying ring 113, the left and right lower portions from the non-engagement state shown in FIG. The second hooking pawl 124 is relatively press-fitted into the opening 111b while being elastically bent and deformed inward, and the leading end hook 124a is hooked with the hooked step 111c as shown in FIG. 4B. . As a result, as shown in FIGS. 1 and 3, the case 1 can be assembled with the mounting base 11, the outer shell 12, and the case main body 13 coupled to each other.

  Further, if the plate-like hook portion 112 of the mounting base 11 is pressed toward the substrate portion 111 from this state, the plate-like hook portion 112 is hooked in the process of approaching the substrate portion 111 from the state shown in FIG. While the lower projection 112c elastically bends and deforms the lower first latching claw 123 upward, it climbs over the tip flange 123a and is engaged as shown in FIG. In this state, the latching protrusion 112c is positioned on the inner side of the distal end hook portion 124a of the lower second latching claw 124 that is latched with the latching stepped portion 111c of the base plate portion 111. Since it is engaged with the claw 123, the lower second latching claw 124 cannot be displaced in the direction (inward) for releasing the engagement with the to-be-latched step portion 111c, that is, the latching state with the substrate portion 111. It comes to be locked with.

  As shown in FIG. 3, the reel 2 is disposed in a state of being rotatably supported between annular reel receivers 131 a and 132 a formed on the inner surfaces of the shells 131 and 132 in the case main body 13. A cylindrical portion 21 and a guide flange portion 22 extending from both ends in the axial direction are provided, and an inner peripheral side of the winding cylindrical portion 21 is a spring accommodating portion 23.

  A spring core 3 is inserted into the shaft hole having an inner diameter of the reel 2 so as to be rotatable relative to the reel 2. Further, both ends of the spring core 3 in the axial direction are rotatably supported by shaft holes formed in the shells 131 and 132 in the case body 13.

  The wire 4 is made of a stranded metal wire, and is wound around the take-up cylinder portion 21 of the reel 2. At the tip of the case 1 drawn from the wire lead-out port 130 of the case main body 13, A connecting fitting 6 for attaching an object is attached.

  The retraction spring 5 that urges the reel 2 in the take-up rotation direction includes first and second spiral springs 51 and 52 having different spring constants arranged in parallel in the axial direction. The first and second spiral springs 51 and 52 are so-called mainspring springs in which a strip-shaped steel material is wound in a spiral shape. Arranged in the spring accommodating portion 23, the outer peripheral end is coupled to the take-up cylinder portion 21 of the reel 2, and the inner peripheral end is coupled to a slit 3a formed at a position near one axial end of the spring core 3. Has been. The second spiral spring 52, which is a relatively high spring, is disposed on the inner periphery of the reel receiver 131a of the case body 13, and the inner peripheral end is formed at a position near the other axial end of the spring core 3. In addition to being coupled to the slit 3b, the outer peripheral end is coupled to the reel receiver 131a. When the first spiral spring 51 is completely wound around the spring core 3, the first spiral spring 51 is rotated so that the spring core 3 rotates in the pull-out rotation direction and the second spiral spring 52 is wound around the spring core 3. And the spring constant of the second spiral spring 52 is set.

  The portable object fall prevention device according to the embodiment configured as described above is in the state shown in FIGS. 1 and 3 on the back side of the waist belt B of the worker A who performs work at a high place, for example, as shown in FIG. After inserting the plate-like hook portion 112 of the mounting base 11 of the case 1, the hooked protrusion 112 c at the tip of the plate-like hook portion 112 is hooked on the lower first hooking claw 123 of the outer shell 12. The case 1 is fixed to the waist belt B, and the tool T is connected to the connecting fitting 6 at the tip of the wire 4 and used. In a state where the hooked protrusion 112 c of the plate-like hook part 112 is hooked on the lower first hooking claw 123 of the outer shell 12, the protrusion 111 a formed on the board part 111 of the mounting base 11 and the plate-like hook part 12 are Since the waist belt B is bitten by the formed protrusion 112a, the case 1 can be firmly fixed to the waist belt B.

  Further, other tools and tools can be tied with a rope or the like to the tying ring 113 provided on the base plate portion 111 of the mounting base 11 in the case 1.

  When the tool T is used for work, the wire 4 is pulled out by a length necessary for work by the tool T. As a result of the rotation of the reel 2 in the pull-out direction, the pull-in spring 5 is wound around the outer periphery of the spring core 3 near the one end in the axial direction, preceded by a relatively low first spiral spring 51. To go.

  Further, when the worker A drops the tool T from his hand during the work, the wire 4 is further pulled out by the dropping force. In the process of pulling out the wire 4, as described above, the retracting spring 5 has a relatively low first spiral spring 51 that is closer to one end in the axial direction of the spring core 3 due to the torque in the pulling rotation direction of the reel 2. Since energy is accumulated while being wound around the outer periphery, an increase in the falling speed is effectively suppressed.

  When the first spiral spring 51 is completely wound around the spring core 3, the spring core 3 is also rotated in the pull-out rotation direction by the torque in the pull-out rotation direction of the reel 2, whereby the second spiral spring 52 of the high spring is rotated. The spring core 3 is wound around, and the fall speed of the tool T is rapidly reduced by the increase of the stored energy to stop the fall on the way, and the impact at that time is effectively mitigated.

  Here, as shown in FIG. 1, when the case main body 13 is fitted and fixed between the mounting base 11 and the outer shell 12 so that the wire outlet 130 is located on the left side surface of the case 1, FIG. As shown, if the worker A attaches the case 1 to the waist belt B so as to be positioned on the right side of the waist, the wire outlet 130 faces the front of the worker A. For example, the worker A is left-handed. If the case 1 is attached to the left side of the waist for some reason, such as being connected to the right side of the waist, or the case 1 being attached to the left side of the waist, the case 1 is kept in the state shown in FIG. If it is attached to the left side, the wire outlet 130 faces the back of the worker A.

  However, according to this embodiment, the lower first latching claw 123 and the lower second latching claw 124 are released from the latching projection 112c and the latching stepped portion 111c, and the upper latching claw 122a is released. The case 1 is once separated as shown in FIG. 2 by releasing the engagement between the case body 13 and the upper retaining beam 115, and then the case body 13 is brought into contact with the substrate portion 111 of the mounting base 11 at the end surface 13a. If the mounting base 11 and the outer shell 12 are joined with the end face 13b abutted against the front plate 121 of the outer shell 12, the wire outlet 130 is positioned on the right side surface as shown in FIG. Assembled to do. That is, since the fitting surfaces of the case main body 13 (shells 131, 132) and the mounting base 11 and the outer shell 12 are symmetrical, the case main body 13 can be attached in the opposite direction.

  Therefore, by attaching the case 1 assembled in this way to the waist belt B so as to be positioned on the left side of the waist, the wire outlet 130 faces the front of the operator A as shown in FIG. Can maintain good usability.

  4C, the lower second hooking claw 124 of the outer shell 12 and the hooking step 111c of the base plate portion 111 of the mounting base 11 are engaged with each other, and the lower first hook of the outer shell 12 is hooked. In a state where the catching protrusion 112 c of the plate-like hook portion 112 on the mounting base 11 is engaged with the catching claw 123, the lower second latching claw 124 is held by the latching stepped portion 111 c of the base plate 111 by the latching projection 112 c. Therefore, the mounting base 11, the outer shell 12, and the case main body 13 are not inadvertently separated, and the safety is high.

  To release the restrained state of the lower second latching claw 124 shown in FIG. 4C, the lower first latching claw 123 is bent with a finger from the opening 112b of the plate-like hook portion 112 of the mounting base 11. The engagement with the hooked protrusion 112c is released by deforming, and the plate-like hook portion 112 may be displaced from the substrate portion 111 in the separating direction as shown in FIG.

  FIG. 8 shows another preferred embodiment of the portable object fall prevention device according to the present invention. In this embodiment, the upper surface plate 122 of the outer shell 12 and the lower first hooking claw and the lower second hooking claw (not shown) of the case 1 are lengthened, so that the space between the mounting base 11 and the outer shell 12 is increased. The plurality of case main bodies 13 are fitted and fixed in a state where they are connected in the axial direction of the reel 2.

  With this configuration, the number of tools that can be connected can be increased without increasing the lateral width of the case 1, and, for example, one case body 13 has the wire outlet 130 positioned on the right side surface. The other case body 13 can be used in various ways such as assembling the case 1 so that the wire outlet 130 is located on the left side surface.

  In each of the above-described embodiments, the case where the portable object to be prevented from falling is a tool. However, the present invention is not limited to this. For example, a portable communication terminal, various keys (for entrance doors, for automobiles), etc. The present invention can also be applied to other portable items.

  Further, according to the portable object fall prevention device according to the present invention, the case 1 can be coupled to and separated from the mounting base 11, the outer shell 12, and the case main body 13, so that the case main body 13 is oriented as described above. In addition to the change, for example, the case main body 13 can be replaced with one using a string-like body other than the wire 4, or the outer shell 12 can be replaced with a specification having a tool holder or the like. be able to.

  In the above description, the case main body 13 can be incorporated in either the front or back direction by making the fitting shape of the mounting base 11 and the outer shell 12 and the case main body 13 symmetrical to each other. Although the direction of the drawer opening 130 can be changed to the left and right, the fitting shape of the mounting base 11 and the outer shell 12 and the case body 13 is 180 degrees with a virtual axis parallel to the axis of the reel 2 as an axis of symmetry. By making it rotationally symmetric, the direction of the wire outlet 130 can be changed left and right by changing the fitting direction 180 degrees around the virtual axis while keeping the front and back directions of the case body 13 unchanged. .

DESCRIPTION OF SYMBOLS 1 Case 11 Mounting base 111c Hooking step part 112c Hooking protrusion 115 Upper hooking beam 12 Outer shell 122a Upper hooking claw 123 Lower first hooking claw (first hooking claw)
124 Lower second pawl (second pawl)
13 Case body 130 Wire outlet 2 Reel 4 Wire (string)
5 Retraction spring (spring)

Claims (5)

  A case, and a reel that winds a string-like body that can be attached to the fall-prevented portable object by a biasing force of a spring, and the case is housed in the mounting base and the reel A portable object fall prevention device comprising: a case main body having a drawer opening for pulling out the string-like body on one side surface, the case main body being detachably attached to the mounting base.   The portable object fall prevention tool according to claim 1, wherein the direction of the drawer opening can be arbitrarily changed according to the mounting direction of the case body with respect to the mounting base.   A case main body is fixed between the mounting base and an outer shell that can be coupled to and separated from the mounting base, and the mounting base can be fitted to one or the other end surface of the case main body, A hook portion extending so as to be folded back from the substrate portion, and the outer shell includes a first hook portion that can be hooked with a tip portion of the hook portion, and a second hook portion that can be hooked with the substrate portion. The portable object fall prevention tool according to claim 1 or 2, further comprising:   4. The portable object fall prevention according to claim 3, wherein when the first latching portion is latched with the tip of the hook portion, the second latching portion is locked in a latched state with the substrate portion. Ingredients.   The portable object fall prevention device according to any one of claims 1 to 4, wherein a plurality of case main bodies can be attached to the mounting base in a state where they are connected to each other in the axial direction of the reel.

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