JP4262006B2 - Clamp unit and conductive connection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a clamp unit for directly sandwiching a conductive member and obtaining a conductive connection therefrom, and a conductive connection device in which a plurality of these clamp units are connected together. In the present invention, for example, in order to protect a building or facility (hereinafter referred to as a building) from lightning, structural members such as reinforcing bars in the building are electrically connected to each other. Thus, it is particularly useful in the technical field of obtaining a conductive connection.
[0002]
[Prior art]
In order to protect buildings from lightning strikes, it is effective to implement an equipotential bonding technique. In this technique, lightning protection systems, metal structures, metal workpieces, and off-system conductivity in the protected area are used. It is necessary to electrically connect the partial / electric power and communication equipment to the bonding bar member by a bonding conductor or a surge protection device.
Here, when the building is constructed from reinforced concrete, there is a natural equipotential bonding structure because conductive structural members made of reinforcing steel and steel frames are stretched around the building. It was thought so far. In reality, however, the surface of these structural members has already been rusted or fouled, and electrical continuity is no longer obtained, and it has been found that no equipotential bonding structure is formed. It was.
[0003]
[Problems to be solved by the invention]
Therefore, the applicant of the present application has made Japanese Patent Application No. 2001-401072 “Conductive Connection Method and Conductive Connection Structure” (filing date: Heisei Heisei) in order to securely connect the structural members of the building to each other and protect the building from lightning. (December 28, 2013) has already been filed.
The present application was made in order to further develop / promote the connection technology of these conductive members based on the already filed Japanese Patent Application No. 2001-401072, and further improved the clamp member for direct conductive connection to the structural member. Thus, it is an object of the present invention to newly provide a highly reliable product that can be manufactured at a low cost, improved workability, and improved conductive connection performance.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the clamp unit and the conductive connection device according to the present invention use the following means. In addition, the code | symbol attached | subjected here used that of drawing.
(1) Two clamping bodies (10, 20) made of a conductive material, and a clamping member for arranging and sandwiching a conductive object between the two clamping bodies (10, 20) 30, a conductive connection clamping unit 100 comprising:
The clamping body (10, 20) includes a clamping part (11, 21) for clamping an object, and a clamping part (12, 22) for inserting the clamping member 30,
At least one of the two sandwiching bodies (10, 20) includes a connection portion 23 for conducting conductive connection with other members,
The sandwiching portions (11, 21) of the sandwiching body have a cross-sectional shape having both sides such as a substantially “U” shape or a substantially semicircular shape, and are two side wall types for electrically contacting an object and sandwiching it. The clamping unit is configured to include a contact portion (a1 and a2 in the sandwiching portion 11) (b1 and b2 in the sandwiching portion 12).
[0005]
(2) In the clamp unit of (1),
The sandwiching bodies (10, 20) have a structure processed from a single plate-like material.
(3) In the clamp unit of (1) or (2),
The tightening member 30 includes a bolt member 31 and a nut member 32, and one of the clamping bodies (10, 20) includes a structure 40 that houses and arranges the nut member 32.
(4) In any one of the clamp units (1) to (3),
At least one of the two holding bodies (50, 60) has a rotation restricting portion 80 as a rotation restricting means for restricting the rotation operation of the holding bodies (50, 60) around the fastening member 70. Prepare. (See Figure 3)
[0006]
(5) Two conductive grips (A1-A1 ′) (A2-A2 ′) for contacting and electrically connecting the conductive members (C1, C2, C3) to each other, and these 2 In the conductive connection device (D1, D2) configured to include the conductive conductors (B1) (B2) for conductively connecting the conductive grips of the body to each other, the conductive grips (A1-A1 ′) ( A2-A2 ′) is a conductive connection device configured by applying any one of the clamp units (1) to (4). (See Figure 7)
(6) In the conductive connection device (D1, D2) of (5), the conductive grips (A1-A1 ′) (A2-A2 ′) and the connection conductors (B1) (B2) are made of an iron material. Good. Thereby, all the structural members involved in the electrical connection of the conductive connection device can be configured with only the iron material without including other dissimilar materials. For this reason, it is possible to provide a product that is excellent in electrical conductivity, pinching connectivity, aging degradation, etc., has an extremely high quality and stable performance over time, and product design becomes very easy.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a clamp unit and a conductive connection device according to the present invention will be described in detail with reference to FIGS.
Here, FIG. 1 is a structural external view composed of a plurality of drawings for explaining a clamp unit 100 according to the present invention, and FIG. 2 is a view of two clamping bodies (10 and 20) of the clamp unit 100. It is an expanded view, Comprising: The top view when a mold is made from a flat sheet material is shown.
FIG. 3 is a structural external view composed of a plurality of drawings for explaining the clamp unit 200 including the rotation restricting portion 80 according to the present invention. FIG. 4 is a diagram showing two clamp members of the clamp unit 200. It is an expanded view of (50 and 60), Comprising: The top view when the mold making is made from the flat sheet-like material is shown.
[0008]
FIG. 5 is a schematic perspective view showing a state in which the clamp unit 100 according to the present invention is attached to and held between the conductive members 91, and FIG. 6 is a clamp unit 200 having the rotation restraining portion 80 according to the present invention. It is a general | schematic perspective view which shows a mode that was attached to the electrically-conductive member 92 and it was clamped.
Further, FIG. 7 is a schematic view showing a state where the conductive connection devices (D1, D2) including the clamp unit are attached to the conductive structural members (C1, C2, C3) and are conductively connected therebetween.
[0009]
First, FIG. 1 is a diagram for explaining a configuration of a clamp unit 100 according to the present invention, and is a configuration explanatory diagram including external views as viewed from six directions. 1 (1) is a front view of the clamp unit 100, FIG. 1 (2) is a rear view, FIG. 1 (3) is a left side view, and FIG. 1 (4) is a right side view. 1 (5) is a plan view and FIG. 1 (6) is a bottom view.
[0010]
A clamp unit 100 for conductive connection shown in FIG. 1 includes two sandwiching bodies (10, 20) made of a highly conductive material such as metal (iron, copper, aluminum, etc.) and a fastening member 30. A conductive object (not shown) is arranged between the two sandwiching bodies (10, 20) and can be tightened and sandwiched to conduct conductive connection. The tightening member 30 here includes a tightening bolt 31, a tightening nut 32, and a washer 33. Each clamping body (10, 20) has a clamping part (11, 21) for clamping an object and a clamping part (12, 22) for inserting the clamping member 30.
[0011]
FIG. 2 shows a development view of each of the two holding bodies (10 and 20) in the clamp unit 100 of FIG. Each of these sandwich bodies (10, 20) is produced by a method in which each of the sandwich bodies (10, 20) is obtained by die-cutting or die-cutting from a single thin plate-like material, and then bent and molded. Well, according to this manufacturing method, there are great advantages in terms of manufacturability and cost. FIG. 2 is a plan view of the two sandwiching bodies (10 and 20) and shows a state after the mold is removed and before bending.
[0012]
In FIG. 1, each of the processed clamping parts (11, 21) has a centrally symmetric cross-sectional shape having a shape similar to a “U” shape, a thin concave shape, a semicircular shape, a semi-sector shape, etc. These two portions have side wall type contact portions, which are the side wall type contact portions (a1 and a2) in the sandwiching body 11 and the side wall type contact portions (b1 and b2) in the sandwiching body 21. The side wall type contact part (a1-b1) and the side wall type contact part (a2-b2) are in a position where the object is sandwiched between the upper and lower sides or the left and right sides, and are in direct contact with the object. These can be clamped by tightening to obtain a conductive connection with each other.
Here, the side wall type contact portions (a1 and a2) of the sandwiching portion 11 and the side wall type contact portions (b1 and b2) of the sandwiching portion 21 are in contact with each other as parts for directly contacting the object. It has ends (a1 ′ · a2 ′) and (b1 ′ · b2 ′).
[0013]
These clamping bodies (10, 20) are obtained by molding by the above-described manufacturing method, and the clamping portions (12, 22) of the clamping bodies (10, 20) are shown in FIG. ), The folding lines (m1, m2, m3, m4) of the sandwiching body 10 and the folding lines of the sandwiching body 20 ( Bending is performed according to m5, m6, m7, m8), and the tightening portions (12, 22) are formed into a cylindrical body having a substantially rectangular cross section.
The cross-sectional shape of these tightening portions (12, 22) is not limited to a cylindrical body having a substantially square cross section as shown in FIG. 1, and various other shapes such as a circular cross-section, a U-shape, and a U-shape are available. Of course, it is possible to adopt various shapes, and it is needless to say that overlapping portions may or may not be provided.
[0014]
In FIG. 1 (4) and FIG. 2, the clamping part 12 of one clamping body 10 has an upper surface part 12 ′, side parts (12 ″ and 12 ′ ″), and bent parts (a3, a4). In addition, the upper surface portion 12 ′ and the bent portions (a3, a4) have holes (H1, H2, H3) in FIG. 2 as through portions for inserting the fastening member. These holes (H1, H2, H3) are processed and manufactured to have the same axis.
Further, the tightening portion 22 of the other sandwiching body 20 also has a lower surface portion 22 ′, side surface portions (22 ″ and 22 ′ ″), and bent portions (b3, b4). The bent portions (b3, b4) have holes (H4, H5, H6) that serve as the same axis for inserting the tightening member.
[0015]
As seen in FIG. 1, the tightening member 30 includes a bolt member 31, a nut member 32, and a washer member 33. The bolt member 31 for applying a clamping force by tightening is penetrated from the clamping part 12 to the clamping part 22, and from the hole part (H1 → H3 → H2) of the clamping part 12 to the hole part (H6 → H5) of the clamping part 22. → It is inserted into H4). At this time, the nut member 32 for meshing with the screw portion of the bolt member 31 is disposed inside the rectangular section of the clamping portion 22, and when the operator tightens the bolt member 31, the nut member There is no positioning or dropping of 32, and it is considered to contribute to the improvement of workability. In other words, the sandwiching body 20 includes a structure 40 that houses and arranges the nut member 32.
[0016]
Each of the sandwiching portions (11, 21) of the sandwiching body (10, 20) has a pair of side wall-type contact portions (a1, a2) for sandwiching the object at positions facing each other with the object sandwiched therebetween. (b1 · b2). Of the two clamping parts (11, 21), the side wall type contact parts (a1, a2) of one clamping part 11 have respective contact end parts (a1 ′, a2 ′). The side wall type contact portions (b1 and b2) have respective contact end portions (b1 ′ and b2 ′), and (a1′−b1 ′) and (a2′−b2 ′) of these contact end portions face each other. It is arranged at a position, and directly touches and clamps the object at a total of four places on two sides.
[0017]
In the present invention, the two sandwiching bodies (10, 20) are sandwiched by forming the cross-sectional shape into a “U” shape, a semicircular shape, a curved arc shape, and the like so that both side portions are formed. A structure having two side wall-type contact portions on both ends of the body (10, 20) is obtained. This structure according to the present invention is a structure in which a clamping member is arranged at the center position of two positions on both ends of one member on one side, and the object is clamped and clamped evenly at a total of four pressing positions on both ends. In this 2 × 2 both-ends 4-point clamping type object clamping structure, the clamping balance is extremely easy to achieve, and a stable and efficient conductive structure can be easily formed.
[0018]
In addition, as shown in FIG. 1, the contact end (a1 ′ / a2 ′) and the contact end (b1 ′ / b2 ′) are formed as an elongated flat surface as an example. It is not limited to. For example, in order to make sharper than the tip cross-section of these contact end portions, it may be a triangle or an acute cut-through shape, etc. By making such a shape, it becomes easy to get into contact with the object by getting into it. Electrical conductivity can be easily obtained even for an object whose surface is rusted or covered with an oxide.
[0019]
Further, at least one of the two sandwiching bodies (10, 20) is provided with a connecting and connecting means for connecting and connecting with another conductive connecting member to obtain a conductive connection with each other. In FIG. 1 and FIG. 2, a connecting connection portion 23 is provided so as to extend from the bottom surface portion 22 ′ of the tightening portion 22 of the clamping body 20, and another conductive connection member such as a tightening bolt is inserted. A hole 23 'is formed for convenience. This connecting / connecting portion 23 may be provided on only one of the two sandwiching bodies (10, 20) or both, and the arrangement position of the connecting / connecting portion 23 may be appropriately selected depending on the convenience of the design. May be.
[0020]
FIG. 5 is a diagram showing a state in which the clamp unit 100 according to the present invention is attached to a conductive member 91 that is a reinforcing bar of a building. The conductive member 91 is clamped and clamped by the two clamping bodies (10, 20) and the clamping member 30, and a conductive connection is obtained. Moreover, the clamping body 20 has the connection part 23, the other conductive connection member 95 is connected and connected there, and electrical connection with another predetermined location is obtained.
[0021]
Now, FIG. 3 is a structural external view for explaining the clamp unit 200 according to the present invention. The clamp unit 200 includes a rotation restricting unit 80 as a rotation restricting unit, but is different from the clamp unit 100 described above, but the other configuration is the same. FIG. 3 is an explanatory diagram of the configuration consisting of six views. FIG. 3 (2) is a rear view and FIG. 3 (2) is a front view of the clamp unit 200. 3) is a left side view, FIG. 4 (4) is a right side view, FIG. 4 (5) is a plan view, and FIG. 4 (6) is a bottom view.
Next, FIG. 4 is a development view of the two clamping bodies (50 and 60) of the clamp unit 200, and shows a plan view when the mold is made from a flat thin plate material. A rotation restricting portion 80 protruding in the shape is provided.
[0022]
Here, referring to FIG. 3 (1), how the clamp unit 200 holds the object N will be described with reference to FIG. The sandwiching body 50 and the sandwiching body 60 have dimensions that allow the object N to pass therethrough in order to insert and place the object N at a predetermined position between the two sandwiching bodies as approaching according to the moving direction d1. It is necessary to have a distance x1 and to open the two sandwiching bodies (50, 60). And after passing the target object N and arrange | positioning the target object N in a predetermined position, the clamping body will be clamped with the bolt member 70, and the target object N will be clamped.
However, at that time, if it is a clamp unit 100 having no rotation restraining portion as shown in FIG. 1, the sandwiching body 10 and the sandwiching body 20 in FIG. In other words, since the bolt member 30 is a member configured to enable a relatively loose pivotal relationship with each other with the bolt member 30 as an axial center, the bolt member 30 is arbitrarily moved away from a predetermined position where the object is sandwiched. May occur.
[0023]
Therefore, the clamp unit 200 in FIG. 3 is different from that in FIG. That is, with respect to the rotating operation of the two holding bodies (50, 60), at least one of the two holding bodies is provided with means for restricting the rotating operation of the holding body around the fastening member. As shown in FIG. 3 or FIG. 4, the pinching body 50 is provided with a rotation restricting portion 80.
In the clamp unit 200 of FIG. 3, the object N is disposed between the sandwiching body 50 and the sandwiching body 60, and the bolt member 71 is moved to the right in a substantially vertical direction with respect to the longitudinal direction in which the object N is disposed. If tightened around, the bolt member 71 is then moved by the bolt member 71 to rotate clockwise. However, since the rotation restraining portion 80 is provided, it comes into contact with the sandwiching body 60, which is another member, and the clockwise movement of the sandwiching body 50 is restrained by the sandwiching body 60 and rotates together. There will be no deviation.
[0024]
In FIG. 3 or FIG. 4, as an example of the rotation restraint means, in order to suppress the clockwise movement of the sandwiching body 50 out of the two sandwiching bodies 50 and the sandwiching body 60, the rotational restraint is performed. A configuration in which only one part of the portion 80 is arranged in a wing shape is shown. However, the present invention is not limited to this, and various arrangements can be considered for the arrangement setting of the rotation restraining means. That is, the rotation restraint part by this invention may be provided only in the one of the two clamping bodies 50 and the clamping body 60, or may provide both. Further, either one of clockwise suppression and counterclockwise suppression may be employed, or both of them may be employed. As for the configuration of the shape, structure, setting position, etc. of the rotation restricting portion, any configuration can be used as long as the rotation of the mutual members can be restricted by contact or collision with other members. A thing may be used.
[0025]
FIG. 6 is a view showing a state in which the clamp unit 200 having the rotation restricting portion 80 according to the present invention is attached to the reinforcing bar 92 which is a rod-shaped conductive member. The bolts 71 are tightened with the reinforcing bars 92 interposed therebetween. As is apparent from FIG. 6, the rotation restraining portion 80 set by extending from the side surface of the sandwiching body 50 is not only restricted in the pivoting of the sandwiching body 50 due to the mutual relationship with the sandwiching body 60. Since the reinforcing bar 92 is sandwiched and arranged in the longitudinal direction, the rotation restricting portion 80 is in a positional relationship in which the rotation is prevented by the reinforcing bar 92, and the rotation of the holding member 50 is also restricted by the reinforcing bar 92. It has the composition which is.
[0026]
FIG. 7 shows that the conductive connection device (D1, D2) including the clamp unit (A1-A1 ′) (A2-A2 ′) and the connection conductor portion (B1, B2) made of an electric wire or the like has a conductive structure member (C1, It is a general-view figure which shows a mode that it is attached to C2 and C3) and clamps them and a conductive connection is made. Here, the conductive structural members (C1, C2, C3) are, for example, structural rebar members embedded as structural support members in a building.
The conductive connection device D1 here is composed of [clamp unit A1-connection conductor B1-clamp unit A1 ′], and conductively connects the reinforcing bar C1 and the reinforcing bar C2. Another conductive connection device D2 includes [clamp unit A2-connection conductor B2-clamp unit A2 ′], and is conductively connected to the reinforcing bar C2 and the reinforcing bar C3.
[0027]
【The invention's effect】
In the clamp unit and the conductive connection device according to the present invention, the following special effects can be obtained.
-The two-sided contact portion provided in the clamping unit clamping unit provides a four-point clamping type conductive structure that can reliably obtain an electrically conductive connection with a simple structure.
-The two clamping bodies of the clamp unit have a structure that can be processed from a single plate-like material, and are excellent in productivity and low cost.
-Since one of the clamping bodies is provided with a structure 40 for accommodating and arranging the nut member 32, it is possible to prevent separation, dropout, dropping, etc. of members such as bolt members and nut members, which are accompanied by on-site tightening / clamping. Workability can be greatly improved.
-At least one of the two clamping bodies is provided with a rotation restraining means for restraining the pivoting movement of the clamping body around the clamping member, and when performing clamping / holding at the site, Misalignment and co-rotation can be prevented, and the workability can be greatly improved even at high places, unstable places, and dangerous installation sites.
-By attaching and connecting the above two clamp units to both ends of the connecting conductor part and configuring it as a single conductive connecting device, it is excellent in workability, performance and cost for connecting the reinforcing bars of the building conductively. An electrically conductive connection device can be provided.
[Brief description of the drawings]
FIG. 1 is an external view of a configuration viewed from a plurality of surfaces for explaining a clamp unit 100 according to the present invention.
FIG. 2 is a view showing two clamping bodies (10 and 20) of the clamp unit 100, and is a plan view in which a mold is made from a plate-like material.
FIG. 3 is an external view of a configuration viewed from a plurality of surfaces for explaining a clamp unit 200 according to the present invention.
4 is a view showing two clamping bodies (50 and 60) of the clamp unit 200, and is a plan view in which a mold is made from a plate-like material. FIG.
FIG. 5 is a schematic perspective view showing a state in which a clamp unit 100 according to the present invention is attached to a conductive member 91 and clamped.
FIG. 6 is a schematic perspective view showing a state in which a clamp unit 200 according to the present invention is attached to a conductive member 92 and clamped.
FIG. 7 is a schematic view showing a state where conductive connection devices (D1, D2) including a clamp unit are attached to conductive members (C1, C2, C3) and are conductively connected by sandwiching them.
[Explanation of symbols]
100, 200 Clamp unit 10, 20 Clamping body 11, 21 Clamping part 12, 22 Clamping part 23 Connection part a1, a2 Side wall type contact part b1, b2 Clamping part 12 Side wall type contact part 30 Clamping member 31 Bolt member 32 Nut member 40 Nut member storage arrangement structure 50, 60 Clamping body 70 Tightening member 80 Rotation restraint part A1, A1 ', A2, A2' Conductive gripping body (clamp unit)
B1, B2 Connection conductor C1, C2, C3 Conductive member (rebar)

Claims (4)

A clamp unit for conductive connection, comprising two sandwiching bodies made of a conductive material, and a clamping member for placing a conductive object between the two sandwiching bodies and sandwiching the sandwiched object. ,
Each holding member of the prior SL two bodies entirely by templating or stamped from a single sheet material, comprising a molding to processed structure by bending it, and, sandwiching the object A clamping portion for forming a clamping portion formed in a tubular body having a rectangular cross section for inserting the clamping member,
At least one of the two sandwiching bodies includes a connecting portion extending from the bottom surface of the tightening portion for conductive connection with another member,
Each of the sandwiching portions of the two sandwiching bodies includes two sidewall-type contact portions for electrically contacting the object and sandwiching it,
The fastening member is a bolt member for insertion into the hole of the same axis which passes through the top portion and the bottom portion of the tightening portion comprising a cylindrical body of square cross section of the holding member of the two-body, the A nut member that is housed and arranged in a tightening portion formed of a cylindrical body having a rectangular cross section of one of the two sandwiching bodies and meshes with a thread portion of the bolt member ;
The two-body One holding member of the tubular body of square section to section with its fastening is being formed, the separation of the nut member the nut member housed and arranged to the inside of the tubular body of the square cross section A clamp unit characterized by having a structure for preventing misalignment. The clamp unit according to claim 1,
Clamp characterized in that at least one of the two sandwiching bodies includes a rotation restraining means projecting in a wing shape from the sandwiching body in order to restrain the pivoting movement of the sandwiching body around the fastening member. unit. Two conductive grips for contacting and electrically connecting the conductive members and connecting the conductive members to each other, and a connection conductor portion for conductively connecting the two conductive grips to each other In a conductive connection device,
The conductive connection device according to claim 1, wherein the conductive gripping body is configured by applying the clamp unit according to claim 1. The conductive connection device according to claim 3,
The conductive connection device, wherein the conductive grip body and the connection conductor portion are made of an iron material.

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