JP2023106905A - Bolt holding tool - Google Patents

Abstract

To provide a bolt holding tool which can reduce falling of bolts when members are connected by using the bolts.SOLUTION: A bolt holding tool 100 includes: a support plate 3 which is disposed so as to face a top surface 811 of a head 81 of each bolt 8; a facing plate 5 which faces the support plate 3 through a gap and has holes 51 through which shafts 82 of the bolts 8 are respectively inserted; and a connection body 4 which connects the support plate 3 with the facing plate 5. The facing plate 5 has open grooves 52 which penetrate from an inner peripheral surface of the hole 51 to an outer peripheral end surface of the facing plate 5.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolt holder, and more particularly to a bolt holder used when connecting adjacent members with bolts.

Patent Literature 1 discloses a technique for preventing a screw from falling into an electrical device while an operator is working on it. A screw drop prevention tool described in Patent Document 1 prevents a screw from dropping when the screw is loosened with a screwdriver.

JP 2012-223865 A

In this way, although there are technologies for preventing screws from falling when loosening them with a screwdriver, there is a problem when connecting members using screws and bolts (hereinafter collectively referred to as "bolts"). In addition, there is no technology that prevents bolts from falling.

SUMMARY OF THE INVENTION An object of the present invention is to provide a bolt holder that can reduce the possibility of a bolt falling when connecting members using the bolt.

A bolt holder according to one aspect of the present invention includes a support plate arranged to face the top surface of the head of a bolt, and a support plate facing the support plate with a gap through which the shaft of the bolt passes. and a connecting member that connects the supporting plate and the opposing plate. The opposing plate has an open groove penetrating from the inner peripheral surface of the hole to the outer peripheral end surface of the opposing plate.

The bolt retainer of the aspect according to the present invention has an advantage that it can reduce the falling of the bolts when the members are connected using the bolts.

FIG. 4 is a perspective view of the bolt holder according to the embodiment when used for an object to be attached; 1 is a perspective view of a bolt holder according to an embodiment; FIG. (A) is a plan view of the bolt holder according to the embodiment. (B) is a cross-sectional view taken along the line AA of FIG. 3(A). It is sectional drawing explaining operation|movement of the closure body which concerns on embodiment. FIG. 4 is a perspective view illustrating a method of housing the head of a bolt in the bolt holder according to the embodiment; FIG. 4 is a perspective view illustrating a state immediately before inserting a bolt into an object to be attached using the bolt retainer according to the embodiment; It is a perspective view of the state where the bolt holder which concerns on embodiment was made to hold|maintain to attachment object. It is the perspective view which screwed the nut to the bolt and performed temporary tightening. It is a perspective view of the state which removed the bolt holder which concerns on this embodiment.

<Embodiment>
The bolt holder 100 according to this embodiment is used when connecting adjacent members with the bolt 8 . Adjacent members include, for example, device frames, rails, construction horizontal members such as girders and beams, bridges, busbars, electric wires of power equipment, and the like. In the present embodiment, as an example of the mode of use, an example of use for connecting a bus line of a main circuit in power equipment will be described.

A power device is a device that operates by being supplied with electricity. The power equipment is not particularly limited, and examples thereof include generators, transformers, control centers, switchboards, and control boards. Here, as shown in FIG. 1, the conductor connected to the power equipment is referred to as "connection conductor 11", the conductor to be connected is referred to as "connection target conductor 12", and the conductor connecting the connection conductor 11 and connection target conductor 12 is It is called "connecting conductor 13". Further, the connection conductor 11, the connection object conductor 12 and the coupling conductor 13 may be collectively referred to as "attachment object". The connection conductor 11, the connection target conductor 12, and the coupling conductor 13 are all formed of plates made of conductors.

The connection conductor 11 and the connection target conductor 12 are separated from each other. The upper surface of the connection conductor 11 and the upper surface of the connection target conductor 12 are located on the same plane. A plurality of through holes 14 are formed at the end of the connection conductor 11 as shown in FIG. A plurality of through holes 14 are also formed at the end of the connection target conductor 12 . Through holes 14 are formed in both ends of the connecting conductor 13 at positions corresponding to the through holes 14 of the connection conductor 11 and the through holes 14 of the connection target conductor 12 . The connecting conductor 13 is arranged so as to straddle the end of the connection conductor 11 and the end of the connection target conductor 12 . The lower surface of the connecting conductor 13 faces the upper surface of the connection conductor 11 and the upper surface of the connection target conductor 12 .

As shown in FIG. 1 , the bolt holder 100 includes a support plate 3 , a counter plate 5 that faces the support plate 3 , and a connector 4 that connects the support plate 3 and the counter plate 5 . The opposing plate 5 has a hole 51 through which the shaft 82 of the bolt 8 is passed, and an open groove 52 penetrating from the inner peripheral surface of the hole 51 to the outer peripheral end surface.

In the bolt retainer 100, one or more bolts 8 are arranged on the support plate 3 such that the shafts 82 protrude from the opposing plate 5 with the heads 81 down and the shafts 82 up. The operator uses the bolt holder 100 to hold the bolt holder 100 against the object to be installed in a state in which the bolt 8 is inserted upward from the bottom into each through hole 14 of the object to be installed. . Then, the worker can attach the spring washer W2 and the nut N1 to the shaft 82 of the bolt 8 protruding from the upper surface of the connecting conductor 13. As shown in FIG. As a result, the operator can reduce the mistake of dropping the bolt 8 when connecting the connection conductor 11 , the connection target conductor 12 and the connecting conductor 13 .

The bolt holder 100 according to this embodiment will be described in more detail below. Hereinafter, for convenience of explanation, in the bolt holder 100, the direction from the support plate 3 to the opposing plate 5 is defined as "upward", and the opposite direction is defined as "downward". Further, the direction in which the connection conductor 11 and the connection target conductor 12 are arranged is defined as the "left-right direction", and the direction orthogonal to the left-right direction and along the horizontal plane is defined as the "front-back direction". However, the definitions of these directions are merely defined for convenience of explanation, and are not intended to specify the mode of use of the bolt retainer 100 .

In addition, "facing" as used in this specification means facing each other. "Facing" includes not only object members contacting and facing each other, and object members facing each other with a gap, but also object members facing each other and another member interposed between them. and In this specification, "parallel" means not only when two straight lines, sides, surfaces, etc. Including cases where they intersect.

As shown in FIG. 2, the bolt holder 100 includes a case 2 having a support plate 3, an opposing plate 5, and a connecting member 4, a closing member 6, and a holding portion 7. As shown in FIG.

(Case 2)
The case 2, as shown in FIG. 3, is a box having a bolt head accommodation space 22 therein. The case 2 includes the support plate 3, the opposing plate 5, and the connector 4, as described above. The case 2 according to this embodiment has a flat shape. The case 2 is formed in a rectangular shape with the left-right direction as the length direction and the front-rear direction as the width direction when viewing the case 2 from above downward (hereinafter referred to as a plan view). The case 2 has an opening surface 21 on one end surface in the width direction. The bolt head accommodation space 22 is a space in which the head 81 of the bolt 8 is accommodated, and is surrounded by the opposing plate 5, the support plate 3, and the connector 4. As shown in FIG.

The support plate 3, the opposing plate 5 and the connection plate are integrally formed in this embodiment. Materials for the support plate 3, the opposing plate 5, and the connection plate are not particularly limited, but examples thereof include metals, resins, carbon, pulp, glass, fabric, etc. Among them, weight reduction, manufacturability, strength, etc. It is preferable to use a resin from the viewpoint of.

The support plate 3 is a plate positioned below the bolt 8 . The support plate 3 faces the top surface 811 of the head 81 of the bolt 8 . The support plate 3 is formed in a rectangular shape with the left-right direction as the length direction and the front-rear direction as the width direction. As used herein, "plate" or "plate" means a member or portion whose thickness is less than the shorter of its width and length. The thickness of the support plate 3 according to this embodiment is 10% or less of the width of the support plate 3 .

The top surface 811 of the head 81 of the bolt 8 rests on the support plate 3 . That is, the support plate 3 can support the head 81 of the bolt 8 from below. However, in the present invention, the head 81 of the bolt 8 does not necessarily need to be in contact with the support plate 3. For example, a sheet material such as an elastic sheet or a non-slip sheet may be laid on the upper surface of the support plate 3 to support the head 81 of the bolt 8 via the sheet material.

The connector 4 connects the support plate 3 and the opposing plate 5 . The connecting bodies 4 stand up from both ends in the length direction and one end in the width direction of the support plate 3 . As shown in FIG. 3B, the vertical dimension of the connector 4 is set to the sum of the head 81 of the bolt 8 and the washer W1.

The connector 4 has a positioning portion 41 . The positioning portion 41 faces the side surface of the head 81 of the bolt 8 . The bolt 8 according to this embodiment is a hexagonal bolt, and has a head 81 with six sides. The positioning portion 41 has a positioning surface 411 that is a plane parallel to the length direction and thickness direction of the case 2 in this embodiment. A positioning surface 411 faces one of the plurality of side surfaces of the head 81 of the bolt 8 . Thereby, the bolt 8 is positioned within the case 2 .

The connector 4 has a recess 42 that accommodates a portion of the washer W1. The concave portion 42 is formed between the positioning portion 41 and the opposing plate 5, as shown in FIG. 3(B). The concave portion 42 is recessed from the plane of the positioning portion 41 . In this embodiment, as shown in FIG. 3A, the recessed portion 42 is formed over the entire length of the positioning portion 41, but partially corresponding to the position where the bolt 8 is arranged. may be formed.

The opposing plate 5 faces the support plate 3 with a gap therebetween. The opposing plate 5 is positioned above the support plate 3 . The opposing plate 5 is formed to have the same shape and size as the support plate 3 in plan view, and is formed in a substantially rectangular shape.

The opposing plate 5 has a plurality of (here, four) holes 51 . The shaft 82 of the bolt 8 is passed through the hole 51 while the head 81 of the bolt 8 is accommodated in the case 2 . The hole 51 penetrates from the lower surface to the upper surface of the opposing plate 5 . Each hole 51 is an elongated hole having a longitudinal direction in the horizontal direction. A plurality of holes 51 are formed according to the positions of the through holes 14 of the connecting conductor 13 . Since the plurality of holes 51 are oblong holes, it is possible to absorb manufacturing tolerances between the connection conductor 11 and the connection target conductor 12 .

The opposing plate 5 has an open groove 52 penetrating from the inner peripheral surface of the hole 51 to the outer peripheral end surface of the opposing plate 5 . The open groove 52 linearly extends from the hole 51 toward one side in the width direction of the opposing plate 5 . The width of the open groove 52 is greater than or equal to the diameter of the shaft 82 of the bolt 8 . A plurality of open grooves 52 are formed in parallel. Note that the plurality of open grooves 52 need not be linear as long as they are parallel to each other.

(Occluder 6)
As shown in FIG. 4, the closing body 6 is configured to be switchable between a closed position in which the open groove 52 is closed and an open position in which the open groove 52 is opened. The closing member 6 is rotatably attached to at least one of the support plate 3 and the opposing plate 5 at one end in the longitudinal direction. Here, the closure 6 is rotatably attached to both the support plate 3 and the counter plate 5 . The rotation axis 64 of the closing body 6 is orthogonal to the main surface of the support plate 3 , that is, parallel to the thickness direction of the case 2 .

At the closed position, the blocking member 6 includes a detent portion 61 positioned between the support plate 3 and the opposing plate 5 and a contact portion 62 provided at the outer end portion of the detent portion 61 in the width direction. Prepare. The contact portion 62 is configured to contact the end surface of the support plate 3 and the end surface of the opposing plate 5 when the closing member 6 is in the closed position.

The anti-rotation portion 61 is inserted between the support plate 3 and the opposing plate 5 as described above when the closing body 6 is in the closed position. As shown in FIG. 3B, the lower surface of the anti-rotation portion 61 contacts or approaches the upper surface of the support plate 3, but the upper surface of the anti-rotation portion 61 has a gap with the lower surface of the opposing plate 5. . A gap between the upper surface of the anti-rotation portion 61 and the lower surface of the opposing plate 5 is formed to be thicker than the washer W1, and the washer W1 is configured to enter the gap.

When the closing body 6 is in the closed position, the end face of the anti-rotation portion 61 faces the side surface of the head 81 of the bolt 8 and preferably presses the side surface of the head 81 of the bolt 8 . As a result, the bolt 8 whose head 81 is accommodated in the bolt 8 accommodation space has a pair of flat surfaces forming opposite sides sandwiched between the anti-rotation portion 61 and the positioning portion 41, making it difficult to rotate. In short, the anti-rotation portion 61 can prevent co-rotation when the nut N1 is screwed when the closing body 6 is in the closed position.

The closing body 6 has a stopper 63 at its end opposite the longitudinal axis of rotation 64 . The stopper 63 holds the closing body 6 in the closed position with respect to the case 2 . The case 2 is provided with connecting portions for fastening the stoppers 63 at the longitudinal ends of the case 2 . The stopper 63 can hold the closing body 6 in the closed position with respect to the case 2 by being connected to the connecting portion. The connection between the stopper 63 and the connecting portion is realized by, for example, a snap-fit structure, fitting, magnetic attachment, hook-and-loop fastener, adhesion, or the like. is preferred.

(Holding portion 7)
The holding part 7 holds the case 2 and the closing body 6 to the attachment target. If the holding part 7 can accommodate the head 81 of the bolt 8 in the bolt head accommodation space 22 of the case 2 and hold the closing body 6 in the closed position, it can be held against the attachment target. There is no particular limitation, and for example, it may be a magnet provided on the facing surface, or a hanger or the like that hooks on the object to be attached. Here, as an example of the holding portion 7, as shown in FIG. 2, a structure including a plurality of belts 71 and a belt holding portion 73 holding each belt 71 at an arbitrary position will be described.

Belt 71 is fixed to case 2 . The width between the belts 71 is shorter than the length of the connecting conductors 13 . As a result, one belt 71 can be used to wind the connection conductor 11 and the connection conductor 13 , and another belt 71 can be used to wind the connection target conductor 12 and the connection conductor 13 . That is, by having at least one belt 71, not only can the case 2 be held with respect to an object to be attached, but adjacent members to be connected can be positioned relative to each other, thereby improving workability.

A buckle 72 is provided at the end of the belt 71 (here, referred to as the “base end”). The belt 71 is passed through the buckle 72 and folded back, and the leading end of the belt 71 is held by the belt holding portion 73 .

The belt holding portion 73 holds the tip of the belt 71 . Examples of the belt holding portion 73 include a hook-and-loop fastener attached to one surface of the belt 71, a projection holding a hole formed at the tip of the belt 71, a button, and the like. In this embodiment, a hook-and-loop fastener is attached to the tip of the belt 71 , and the belt holding portion 73 is configured by the hook-and-loop fastener attached to one surface of the belt 71 . Therefore, by connecting the hook-and-loop fasteners, the belt holding portion 73 can hold the tip portion of the belt 71 at an arbitrary position in the longitudinal direction of the belt 71 .

(Method)
Next, an example of a method of connecting the connecting conductor 11, the connection target conductor 12 and the connecting conductor 13 with the bolt 8 using the bolt holder 100 according to the present embodiment will be described.

As shown in FIG. 5 , the heads 81 of a plurality of bolts 8 are housed inside the case 2 , and the shafts 82 of the bolts 8 pass through the holes 51 and protrude from the opposing plate 5 . At this time, the support plate 3 faces the top surface 811 of the head 81 of the bolt 8 , and the opposing plate 5 faces the bearing surface 812 of the head 81 of the bolt 8 . In this state, the closing body 6 is switched to the closed position.

Next, as shown in FIG. 6, the connecting conductor 13 is placed on the connection conductor 11 and the connection object conductor 12 . Then, the shaft 82 of the bolt 8 is inserted upward from the bottom into each of the through holes 14 of the connection conductor 11 , the connection target conductor 12 and the coupling conductor 13 . After that, as shown in FIG. 7, the case 2 is held by the holding portion 7 on the object to be attached. At this time, using the belt 71 and the belt holding portion 73, the connection conductor 11 and the connection conductor 13 are positioned with one belt 71, and the connection target conductor 12 and the connection conductor 13 are positioned with the other belt 71. .

Next, as shown in FIG. 7, a spring washer W2 is attached to a shaft 82 protruding from the upper surface of the connecting conductor 13, and a nut N1 is screwed. At this time, as shown in FIG. 8, the nut N1 is loosely screwed (that is, temporarily tightened) without being tightly fastened. This can prevent the plurality of bolts 8 from falling.

Next, as shown in FIG. 9, after releasing the holding by the holding portion 7 and switching the blocking member 6 to the open position, the bolt holder 100 is moved in the width direction with the plurality of bolts 8 left. Then, the shaft 82 of each bolt 8 located in the hole 51 passes through the open groove 52 and is removed from the case 2 . This allows the bolt retainer 100 to be removed.

After that, by tightening the nuts N1 to the respective bolts 8, the work of connecting the connecting conductors 11, the conductors to be connected 12 and the connecting conductors 13 is completed.

(Effect)
As described above, the bolt holder 100 according to this embodiment includes the support plate 3, the opposing plate 5 formed with the hole 51 through which the shaft 82 of the bolt 8 is passed, and the support plate 3 and the opposing plate 5. The opposing plate 5 has an open groove 52 penetrating from the inner peripheral surface of the hole 51 to the outer peripheral end surface of the opposing plate 5 . Therefore, in the bolt holder 100 , the bolt 8 can be arranged on the support plate 3 with the head 81 downward and the shaft 82 upward so that the shaft 82 protrudes from the opposing plate 5 . In this state, the shaft 82 of the bolt 8 can be passed through the through hole 14 to be attached. According to the bolt holder 100 according to the present embodiment, the shaft 82 of the bolt 8 can be erected by the support plate 3 and the opposing plate 5. Therefore, when connecting the members using the bolt 8, Mistakes in dropping the bolt 8 can be reduced.

As a result, it is possible to omit curing under the connection work. Furthermore, since the time for curing can be reduced, working hours can be reduced.

In addition, since the bolt holder 100 has the holes 51 formed at a plurality of locations, the plurality of bolts 8 can be collectively passed through the through-holes 14 to be mounted, resulting in good workability.

Further, since the bolt holder 100 is provided with the closing body 6 that can be switched between the closed position that closes the open groove 52 and the open position that opens the open groove 52, the bolt 8 is inserted between the support plate 3 and the opposing plate 5. After housing the head 81 of the bolt 8, it is possible to suppress the sudden drop of the bolt 8 before attaching it to the object to be attached.

In addition, since the closing member 6 has the anti-rotation portion 61, when the nut N1 is screwed in after the shaft 82 is passed through the through-hole 14 to be attached, co-rotation is unlikely to occur, and workability can be improved.

Moreover, since the closing member 6 is rotatably attached to at least one of the support plate 3 and the opposing plate 5, the closing member 6 can be prevented from falling during operation.

Further, since the closing body 6 has the stopper 63, it is possible to prevent the closing body 6 from being unintentionally switched to the open position.

In addition, since the connection body 4 has the recess 42 that accommodates the washer W1, the washer W1 and the head 81 of the bolt 8 can be accommodated between the support plate 3 and the opposing plate 5. In the mounting work, the work of passing the shaft 82 through the washer W1 can be omitted, which improves the workability and reduces the mistake of dropping the washer W1.

In addition, since the bolt holder 100 has the holding portion 7, the support plate 3, the opposing plate 5, and the connection body 4 are held against the mounting object, so that when the nut N1 is screwed, the bolt holder 100 can be held with one hand. There is no need to tighten the nut N1 while supporting it, and the operator can work with both hands.

<Modification>
The above embodiment is but one of the various embodiments of the present invention. The embodiment can be modified in various ways according to the design etc., as long as the object of the present invention can be achieved. Modifications of the embodiment are listed below. Modifications described below can be applied in combination as appropriate.

In the bolt holder 100 according to the above-described embodiment, a method of using the connection conductor 11, the connection object conductor 12, and the coupling conductor 13 are connected at the same time. and the conductor 12 to be connected are stacked in the thickness direction, and these two may be connected with the bolt 8 .

Although the hole 51 is an elongated hole in the above embodiment, it may be, for example, a round hole, a square hole, or the like.

In the above-described embodiment, the positioning surface 411 is a flat surface, but it may be configured with an internal corner portion of approximately 120° in a plan view that matches the angle of the hexagonal bolt, for example. Further, the anti-rotation portion 61 may also have an internal corner portion of approximately 120° in a plan view that matches the angle of the hexagonal bolt.

Although the support plate 3 constitutes the lower surface of the case 2 in the above embodiment, the support plate 3 may be formed of a plate that partitions the inside of the case 2, for example.

In the above-described embodiment, the connecting member 4 connects the support plate 3 and the opposing plate 5 at both ends in the length direction and one end in the width direction, but may be connected at only one end in the width direction. Moreover, you may connect only a part of full length of one end in the width direction.

In the above embodiment, the opposing plate 5 is formed in a rectangular shape, but it is not limited to this, and may be in a circular, square, triangular shape, or in a substantially U-shape surrounding the hole 51 . The shape may be such that it has a plurality of portions.

In the above embodiment, the head 81 of the bolt 8 and the washer W1 are accommodated in the case 2, but the recess 42 for accommodating the washer W1 may be omitted. In this case, the washer W1 may be arranged on the upper surface of the opposing plate 5. FIG.

In the above embodiment, the case 2 is removed by translating the case 2 in the width direction after the nut N1 is screwed onto the bolt 8. Then, the bolt 8 may be removed from the case 2. In this case, the open groove 52 is formed in an arc shape centered on the centroid of the case 2 in plan view. Also, after the case 2 is slightly moved in the width direction, it can be removed by parallel movement in the length direction. 52 may be combined.

The width of the open groove 52 according to the above embodiment is shorter than the length of the hole 51 , but may be the same dimension as the length of the hole 51 . That is, the open groove 52 and the hole 51 may be formed in a notch shape.

In the above-described embodiment, an example using a hexagon bolt as the bolt 8 has been described, but the present invention can also be applied to other bolts 8 such as a hexagon socket head bolt. Also, the bolt 8 is assumed to include a screw.

In the holding part 7 according to the above embodiment, the buckle 72 is provided at the proximal end of the belt 71, but the buckle 72 may be omitted.

Although the pitch of the plurality of holes 51 is fixed in the above embodiment, for example, the pitch of the plurality of holes 51 may be variable by making the space between the adjacent holes 51 in the opposing plate 5 expandable and contractable.

In this specification, expressions such as "end" and "end" are used to distinguish between the presence or absence of "... portion". For example, "edge" refers to the distal portion of an object, while "edge" refers to an area of definite extent that includes the "edge". Any point within a certain range including the edge is regarded as an "edge". The same applies to other expressions with "... part".

REFERENCE SIGNS LIST 100 bolt holder 3 support plate 4 connector 41 positioning portion 42 recess 5 opposing plate 51 hole 52 open groove 6 closing member 61 anti-rotation portion 63 stopper 7 holding portion 8 bolt 81 head 811 top surface 82 shaft

Claims (8)

a support plate arranged to face the top surface of the head of the bolt;
a counter plate facing the support plate with a gap therebetween and having a hole through which the shaft of the bolt is passed;
a connector that connects the supporting plate and the opposing plate;
with
The opposing plate has an open groove penetrating from the inner peripheral surface of the hole to the outer peripheral end surface of the opposing plate,
bolt retainer. The holes are formed at a plurality of locations in the opposing plate,
The bolt retainer according to claim 1. Further comprising a closing body that can be switched between a closed position that closes the open groove and an open position that opens the open groove,
The bolt holder according to claim 1 or 2. The closing body has a detent part positioned between the support plate and the opposing plate and facing a side surface of the head of the bolt in the closed position,
A bolt retainer according to claim 3. The closure is rotatably attached to at least one of the support plate and the counter plate,
5. A bolt retainer according to claim 3 or claim 4. The closing body has a stopper that holds the support plate and the opposing plate in the closed position,
A bolt retainer according to any one of claims 3 to 5. The connector is
a positioning portion facing the side surface of the head of the bolt;
a recess that is formed between the positioning portion and the opposing plate and accommodates a washer W1 through which the shaft of the bolt is passed;
having
A bolt retainer according to any one of claims 1 to 6. further comprising a holding portion for holding the support plate, the opposing plate and the connecting body against the mounting target of the bolt;
A bolt retainer according to any one of claims 1 to 7.

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