JP2008017621A - Bus duct connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bus duct connector which can prevent the displacement of the installation direction of a pressing member from a normal installation direction by regulating the separation of the pressing member from a connecting joint plate. <P>SOLUTION: The bus duct connector is constituted in such a manner that: the connecting joint plate 23 is arranged outside a connector of conductor ends 11a, 11a of bus ducts 10, 10; the pressing member 24 is arranged outside the connecting joint plate 23; and the connector, the connecting joint plate 23, and the pressing member 24 are fastened with bolts 26 and nuts 27. A locking protrusion 23e formed on an middle plate 23b is made to abut on the external face of the board 24a of the pressing member 24 in a state that the fastening by the bolts 26 and the nuts 27 is released, and the separation is regulated in the pressing member 24 from the connecting joint plate 23. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a bus duct connecting portion that interconnects bus ducts constituting an electric trunk line in an office building or the like.

  Conventionally, a connecting pipe is provided on both outer sides of a connecting portion for connecting a conductor end portion of a bus duct to a bus duct connecting portion for connecting bus ducts to each other, and a pressing member is provided in a concave groove of the connecting joint plate. There are some that are fastened together (see Patent Document 1).

JP 2001-186634 A

  By the way, when connecting the bus duct at the bus duct connection part as described above, the tightening of the fastener is once loosened, the conductor end of the bus duct is inserted into the connection part, and then the connection is made by tightening the fastener. However, when the fastening tool is loosened, the holding member is separated from the connection joint plate, and the setting direction of the holding member is deviated from the normal installation direction due to the release from the concave groove. Sometimes. Therefore, it is necessary to re-install the pressing member in the normal installation direction, such as re-arranging it in the concave groove. Also, forgetting to correct the installation direction, there is a risk that the presser member will be tightened in a state of being displaced from the normal installation direction. The pressed part is pressed and the connection between the bus ducts becomes poor.

  The present invention is proposed in view of the above problems, and it is possible to prevent the pressing member from being displaced from the normal installation direction by regulating the separation of the pressing member from the connection joint plate. An object of the present invention is to provide a bus duct connection portion that can reliably perform a good bus duct connection while simplifying the bus duct connection work.

  The bus duct connecting portion of the present invention is provided with a connection joint plate outside the connection portion of the bus duct conductor, a pressing member is provided outside the connection joint plate, and the connection portion, the connection joint plate, and the pressing member are fastened with a fastener. A restricting means for restricting the separation of the pressing member from the connection joint plate in a state where the fastening of the fastener is loosened is applied to both the pressing member, the connection joint plate, or the pressing member and the connection joint plate. It is characterized by providing. In the configuration for controlling the separation by the restricting means, for example, a state in which the pressing member and the connection joint plate in a state in which the fastener is tightened is in contact with the regular position and in the installation direction. A configuration in which tightening is maintained even in a loosened state, and the holding member and the connecting joint plate are regulated so as not to be separated, and the holding member is separated from the connecting joint plate in a state where the fastening of the fastener is loosened. This includes both a configuration in which the installation direction, position, and contact state of the pressing member with respect to the connection joint plate return to the original normal state when regulated within the distance and tightened from the loosened state.

  Moreover, the bus duct connection part of the present invention is characterized in that the restriction means is a locking part that is formed on the connection joint plate and locks the outer surface of the pressing member. For example, a configuration in which a locking portion such as a locking projection, a locking plate, a locking bar, or the like protruding on the outer surface of the substrate is provided at a position that is the same as or slightly outside the thickness of the substrate of the pressing member arranged in contact with the connection plate. To do. In addition to a configuration in which a locking portion is provided from the middle plate described later, a configuration in which a plurality of locking plates and locking rods that protrude outward from the connection joint plate and whose tips are bent in the center direction are provided at both ends in the width direction of the substrate. It is good.

  In the bus duct connecting portion according to the present invention, the restricting means includes an engaging portion or an engaging receiving portion formed on the pressing member and an engaging receiving portion or engaging portion formed on the connecting joint plate. It is characterized by being configured. The engaging portion and the engagement receiving portion provided on the pressing member and the connection joint plate are, for example, a side end of the pressing member, an inner surface of the pressing member that contacts the connection joint plate, an outer surface of the connection joint plate, an intermediate plate described later, and the like. Can be provided. Further, the engagement portion can be, for example, an engagement protrusion, an engagement claw, an engagement protrusion that is a protrusion, and the engagement receiving portion has, for example, an opening, a recess, and a certain length. It is possible to make it an engagement concave groove or the like.

  Moreover, the bus duct connection part of the present invention is characterized in that the regulating means is an adhesive member interposed between the pressing member and the connection joint plate. The pressure-sensitive adhesive member can be applied in advance to, for example, a double-sided tape, a pressing member, or a connection joint plate, and can be a double-sided adhesive or the like that adheres both when the pressing member and the connection joint plate are in surface contact.

  In addition to the configuration directly described in the present specification, the invention of the present application may be specified by changing these partial configurations from the specification to other obvious configurations, or the description in these configurations. In addition, those specified by adding other obvious configurations from those described above, or those obtained by deleting these partial configurations to the extent that partial effects can be obtained and specifying them as higher-level concepts are also included.

  The bus duct connecting portion according to the present invention has a restricting means for restricting the separation of the pressing member from the connection joint plate in a state where the fastening of the fastener is loosened. It is possible to prevent the installation direction of the pressing member from deviating from the normal installation direction. This eliminates the need to re-install the pressing member in the normal installation direction, simplifies the bus duct connection process, and reduces the work cost. In addition, the pressing member is not fastened while being displaced from the normal installation direction, and a good connection between the bus ducts can be reliably performed.

  In addition, by forming the restricting means on the connection joint plate and using a locking portion that locks the outer surface of the press member, it is possible to control the separation of the press member at a low cost with a very simple process for the connection joint plate. it can. Further, by configuring the restricting means with an engagement portion or an engagement receiving portion formed on the pressing member and an engagement receiving portion or an engaging portion formed on the connection joint plate, A slight error with respect to the normal installation state such as the installation direction and position can be eliminated. Moreover, by using the adhesive member interposed between the pressing member and the connection joint plate as the regulating means, the separation of the pressing member can be regulated at a low cost by a very simple process.

  Although the Example of the bus duct connection part of this invention is described along drawing, this invention is not limited to a following example.

  As shown in FIGS. 1 to 5, the bus duct connecting portion of the first embodiment is a connection unit that electrically connects the in-phase conductors 11 and 11 of the bus ducts 10 and 10 and connects the bus ducts 10 and 10 to each other. 20.

  As shown in FIGS. 1 and 5, the bus duct 10 has a conductor 11 covered with an insulator 12, and conductor ends 11 a on both sides are exposed from the covering of the insulator 12, and the conductor 11 has three wires. Laminated. The substantially leading ends on both sides of the conductors 11 arranged in a stacked manner are expanded and stepped in a fork shape in plan view, and the conductor end portions 11a and 11a are separated from each other by a predetermined distance. Each end portion 11a can be inserted between the members 22 and 22. A pair of substantially side-shaped housing side plates 13 having a substantially U-shaped cross section provided on the three-line conductor 11 is provided with reinforcing plates 13b having a substantially L-shaped cross-sectional view and bent outward from the upper and lower sides of the substrate 13a. In addition, a pair of pipe spacers 14, which are long members having a substantially rectangular shape in cross section, are arranged on both sides in the width direction, and the conductor 11 in the laminated arrangement includes a bolt passing through the pair of housing side plates 13 and 13, and this By tightening a fastener 15 such as a nut to be screwed together, the pipe spacers 14 and 14 interposed on both sides in the width direction are clamped from both sides in the thickness direction by the substrates 13a and 13a of the housing side plates 13 and 13. . Further, on the housing side plate 13, connection side plates 13 c each having a substantially L shape in plan view are extended from the substrate 13 a on both sides in the length direction of the bus duct 10, and the connection side plate 13 c is in the thickness direction of the substantially end portion of the conductor 11. It arrange | positions at both sides and can be fixed in surface contact with the connection joint plate 23 of the connection unit 20 mentioned later.

  As shown in FIGS. 1 to 5, the connection unit 20 is disposed at a predetermined interval, and has a plate-like insulating separator 21 that insulates the conductor ends 11 a and 11 a having different phases from each other, and the insulating separators 21 and 21. And a conductive connecting member 22 that is disposed along the insulating separator 21 and electrically connects the conductor end portions 11a and 11a of the same phase, and is connected to the outside of the insulating separator 21 on both outer sides. Plates 23 and 23 are disposed, and a pressing member 24 and a washer 25 are sequentially disposed on the outside of the connection joint plate 23.

  As shown in FIGS. 2 and 3, the connection joint plate 23 is formed of a steel plate or the like, and outwards from the both ends of the rectangular plate-like substrate 23 a and the bus duct connection direction of the substrate 23 a in the thickness direction of the substrate 23 a. A pair of middle plates 23b, 23b formed to be bent, and a pair of outer plates formed to bend outward from the outer edge of each of the middle plates 23b, 23b in the bus duct connection direction and extend away from each other And has a groove 23d extending in the width direction of the conductor 11 to be connected to the center thereof, and the width of the groove 23d is the same as the width of a pressing member 24 described later or a pressing member. It is slightly wider than the width of the member 24. At the position near the outer end of the substrate 23a in the thickness direction of the middle plate 23b, that is, the position near the side where the middle plate 23b and the outer plate 23c of the middle plate 23b collide, a locking projection 23e projects inward as a restricting means. The pair of locking projections 23e and 23e of the middle plates 23b and 23b are arranged to face each other at corresponding positions. The distance between the inner end of the locking projection 23e in the thickness direction of the substrate 23a and the outer surface of the substrate 23a is the same as the thickness of the pressing member 24 described later, or slightly longer than the thickness of the pressing member 24. Reference numeral 23f denotes an insertion hole for a bolt 26 described later. It is preferable that the locking projection 23e is formed by punching from the back surface of the intermediate plate 23b of the connection joint plate 23 as in this example, but it can be formed at low cost, but the intermediate plate 23b shown in FIG. A configuration in which the locking projection 23e is formed while forming, or a configuration in which a locking member 23e is provided by bonding or welding a separate member to the surface of the intermediate plate 23b is appropriate.

  As shown in FIGS. 3 and 4, the pressing member 24 has a substantially square shape in front view and a substantially U shape in side view, and has a substantially rectangular flat plate-like substrate 24a and the thickness direction of the substrate 24a from both upper and lower ends of the substrate 24a. And a reinforcing plate 24b formed to be bent outward. An insertion hole 24c through which the bolt 26 is inserted is formed in the center of the substrate 24a, and a substantially elliptic holding convex portion 24d that is long in the width direction of the conductor 11 to be connected is narrowed in the vicinity of both left and right ends when viewed from the front. It is formed by molding. The pressing protrusion 24d is recessed from the outer surface of the substrate 24a inward and protrudes inward from the inner surface of the substrate 24a, and has a high clamping force when the bolt 26 and the nut 27 are tightened via the washer 25. It has come to be obtained.

  The pressing member 24 is disposed in the concave groove 23d of the connection joint plate 23 with the inner surface of the substrate 24a along the outer surface of the substrate 23a. In this example, the width of the concave member 23d is the width of the pressing member 24 in the front view. The pressing member 24 is engaged between the intermediate plates 23b and 23b of the connection joint plate 23 in the direction, and the substrate 24a of the pressing member 24 is sandwiched between the outer surface of the substrate 23a of the connection joint plate 23 and the inner end of the locking projection 23e. Thus, the outer surface of the substrate 23a is locked by the inner end of the locking protrusion 23e. The pressing member 24 is disposed in the concave groove 23d by pushing the outer plates 23c and 23c inward while supporting the inner surface of the substrate 23a, and warping the connection joint plate 23 so that the outer ends of the middle plates 23b and 23b are expanded. The holding member 24 is introduced into the concave groove 23d from between the locking projections 23e and 23e which are spaced apart from the width of the substrate 24a of the holding member 24, and the warped connection joint plate 23 is returned to the original state to lock the locking projection. This is performed by bringing the inner ends of 23e and 23e into contact with the outer surface of the substrate 24a.

  The outer side of the pressing member 24 disposed in the concave groove 23d of the connection joint plate 23 has a large diameter having a diameter slightly smaller than the height of the substrate 24a, and can apply a tightening force to substantially the entire pressing member 24. A washer 25 is provided. Then, bolts 26 are inserted from the outside of one connection joint plate 23 into insertion holes formed at the centers of the insulating separator 21, the conductive connection member 22, the connection joint plate 23, the pressing member 24, and the washer 25. A nut 27 is screwed onto a substantially tip end of a bolt 26 inserted into the insertion hole on the outside of the connection joint plate 23, and the insulating separator 21, the conductive connection member 22, and the connection are connected by a pair of washers 25 and a pair of pressing members 24. Temporarily fastened with fasteners such as bolts 26 and nuts 27 so as to sandwich the joint plate 23.

  When connecting the bus ducts 10 and 10 with the connection unit 20, first, the bolts 26 and the nuts 27 of the connection unit 20 are loosened. In the state where the tightening is loosened, since the bolt 26 penetrates the pressing member 24 and the connecting joint plate 23, the position of the pressing member 24 relative to the connecting joint plate 23 is the same as before the tightening is loosened. While maintaining the same position, the outer surface of the substrate 24a of the pressing member 24 is locked by the inner end of the locking projection 23e, and the movement of the pressing member 24 in the thickness direction of the conductor 11 is restricted. Therefore, the pressing member 24 does not come out of the concave groove 23d and the rotation of the pressing member 24 is restricted by contact with the intermediate plates 23b and 23b. It is maintained in the same installation direction as before loosening, that is, the normal installation direction.

  Thereafter, as shown in FIGS. 1 and 5, the conductor end portions 11a and 11a of the same phase of the bus ducts 10 and 10 to be connected are inserted between the conductive connecting members 22 and 22 of the connection unit 20 so as to face each other. At the same time, the connection side plate 13c of the bus duct 10 is inserted into the space formed between the outermost insulating separator 21 and the outer plate 23c of the connection joint plate 23, and the intermediate plate 23b that regulates the insertion distance of the connection side plate 13c. The tip of the connection side plate 13c is brought into contact. Then, the connection side plate 13c of the bus duct 10 and the outer plate 23c of the connection joint plate 23 are fixed with screws 31, etc., and fastenings such as bolts 26, nuts 27, etc. are fastened and finally fastened, and in-phase conductor end portions 11a and 11a are electrically connected through the conductive connection member 22. By the fastening of the fastening tool, the pressing member 24 is fastened in the normal installation direction with respect to the connection joint plate 23. Thereafter, a connection plate 32 having a branch portion 32a capable of opening a branch opening is disposed on the corresponding open surfaces on both sides in the width direction of the conductor 11, the connection plate 32 and the reinforcing plate 13b are fixed with screws 33 or the like, and a bus duct is formed. 10 · 10 mutual connection is completed.

  The bus duct connecting portion of the first embodiment can regulate the separation of the pressing member 24 from the connection joint plate 23 by the contact of the locking protrusion 23e with the outer surface of the pressing member 24, and the pressing member 24 is the middle plate. It is possible to prevent a deviation from the normal installation direction by deviating from between 23b and 23b. Therefore, when the fasteners such as the bolts 26 and the nuts 27 are tightened, the rotation is not generated, and the portion deviated from the portion requiring the pressing is not pressed. In addition, the position and direction of the pressing convex portion 24d can be held in a proper state, and a good bus duct connection can be made. Further, since the separation of the pressing member 24 is restricted by the locking projection 23e, there is no need to use a separate independent member. Therefore, when the connection configuration of the bus ducts 10 and 10 is assembled by the connection unit 20 or during construction, There is no loss of members, and a good bus duct connection can be made at low cost. Moreover, since the latching protrusion 23e is provided at the outer end of the middle plate 23b having a rotation prevention function, the effect of rotation prevention is also obtained. Moreover, since the latching protrusion 23e is formed in the intermediate plate 23b and a space formed by the intermediate plate 23b, the outer plate 23c, and the outermost insulating separator 21 can be secured, the bus duct 10 for inserting the connection side plate 13c into the space. There will be no hindrance to the connection. Further, by attaching the pressing member 24 while warping the connecting plate 23 of the steel plate, the high-strength pressing member 24 can be used, and a good connection state of the bus duct 10 can be maintained for a long time.

  Next, the difference between the bus duct connecting portion of the second embodiment and the first embodiment will be described.

  The bus duct connection part of the second embodiment is the connection unit 20 shown in FIG. 7, and only the restricting means of the connection unit 20 is different from the first embodiment. The configuration of the bus duct 10 to be connected and the configuration of connecting the bus ducts 10 and 10 to each other are the same as those in the first embodiment.

  7 includes a pair of engaging protrusions 24e and 24e formed to protrude outward in the width direction from both side surfaces of the substrate 24a of the holding member 24, and a middle plate of the connection plate 23. 23b and 23b, and formed by openings 23h and 23h provided at positions corresponding to the engaging protrusions 24e and 24e in the state where the pressing member 24 is disposed in the concave groove 23d. 24e and 24e are engaged with the openings 23h and 23h, respectively, and the separation of the pressing member 24 from the connection joint plate 23 is restricted. The engagement protrusions 24e and 24e are fitted into the openings 23h and 23h in the same manner as in the first embodiment by warping the connection joint plate 23 so that the interval between the opposed openings 23h and 23h is widened, and the pressing member 24 is moved to the middle plate. 23b and 23b, engaging protrusions 24e and 24e are engaged with the openings 23h and 23h, and the warped connection joint plate 23 is returned to its original position. The connection unit 20 of the second embodiment also has the same effect as that of the first embodiment.

  In place of the configuration in which the opening 23h is provided in the intermediate plate 23b, a recess that is struck from the inside to the outside of the intermediate plate 23b may be formed, and the recess and the engagement protrusion 24e may be engaged. It can be formed at low cost. Further, the engaging protrusion 24e of the pressing member 24 is formed by cutting when the pressing member 24 is shaped, but the forming process is appropriate, for example, by welding or bonding another member. The protrusion 24e can be formed, or the end of the pressing member 24 can be pressed to bulge out.

  The first and second embodiments of the bus duct connecting portion of the present invention have been described above, but the present invention includes the following expansions and modifications.

  For example, the shape and connection structure of the bus duct and the housing are appropriate in addition to the configurations of the bus duct 10, the housing side plate 13, the pipe spacer 14, and the like of the first and second embodiments. In addition, when the connection structure is a so-called overlapping connection that is fastened with a fastener, the bus duct is not a 3-wire type, but a 2-wire type or a 4-wire type or more, or a close-insulation type coated with an insulator The present invention is applicable when the bus duct is not a bus duct but a so-called air-insulated bus duct that insulates different phases with air.

  Moreover, it is good also as a bus duct connection part of the 3rd-5th Example which has a structure shown to Fig.8 (a)-(c) as a control means. 8A is in contact with a pair of openings 23i and 23i formed between the insertion hole 23f in the center of the substrate 23a of the connection joint plate 23, and the connection joint substrate 23a of the substrate 24a of the pressing member 24. A pair of engaging protrusions 24f and 24f projecting inwardly with an insertion hole 24c sandwiched between the inner surfaces, and engaging protrusions 24f and 24f that are substantially arrow-shaped or claw-shaped in cross section are inserted into the openings 23i and 23i. By being engaged, the separation of the pressing member 24 from the connection joint plate 23 is restricted. 8B is provided on the inner surface of the substrate 24a of the pressing member 24 at a position between the insertion hole 24c and the pressing convex portion 24d, and protrudes higher than the height of the pressing convex portion 24d. The double-sided adhesive 34, which is composed of the double-sided adhesive 34 that is interposed between the substrate 23a and the substrate 24a, bonds both the substrates 23a and 24a, so that the separation of the pressing member 24 from the connection joint plate 23 is regulated. The The arrangement position of the double-sided adhesive material 34 can be an appropriate position other than the formation position of the insertion hole 24c and the pressing convex portion 24d on the inner surface of the substrate 24a. It is possible to provide an elastic double-sided tape by sticking it on the substrate 24a or by applying an adhesive on the inner surface of the substrate 24a. 8C includes a pair of engaging projections 23j and 23j that project inward from the center of the middle plates 23b and 23b of the connection joint plate 23, and the width direction of the substrate 24a of the pressing member 24. Consists of recesses 24g and 24g formed at the centers of the side surfaces of both ends, and a pair of engagement protrusions 23j and 23j are engaged and engaged with the recesses 24g and 24g by bending the connection joint plate 23 in the same manner as described above. The separation of the pressing member 24 from the connection joint plate 23 is restricted.

  Further, the number, the forming location, and the shape of the locking protrusions 23e, the engaging protrusions 24e, 24f, and 23j constituting the restricting means and the openings or recesses with which the locking protrusions are engaged are appropriate. A configuration in which a plurality of pairs of engagement protrusions 24e are engaged with the opening 23h, a configuration in which one locking protrusion 23e is provided, a configuration in which one engagement protrusion 24e is engaged with one opening 24h, and the like. Is possible. In the configuration in which the one locking protrusion 23e, the one engaging protrusion 24e, and the one opening 24h are provided, the pressing member 24 can be easily attached, and the bolt 26 and the locking protrusion 23e are slightly loosened. The separation of the pressing member 24 from the connection side plate 23 can be restricted by stopping and engaging the engaging protrusion 24e. Further, the restricting means includes an appropriate configuration capable of regulating the separation of the pressing member 24 from the connection joint plate 23 in a state where the tightening of the fasteners such as the bolt 26 and the nut 27 is loosened. In addition to a configuration in which the pressing member 24 is kept in close contact with the connection joint plate 23 in a state where the fastening of the fastener is loosened, for example, fastening is possible. When the fastener is loosened, the separation of the pressing member 24 from the connection joint plate 23 is regulated within a predetermined distance, and when the fastener is tightened again, the installation direction and position of the pressing member 24 with respect to the connection joint plate 23 Includes a configuration that returns to the original normal state. Further, the shape and configuration of the pressing member 24 are appropriate within the scope of the present invention.

  INDUSTRIAL APPLICABILITY The present invention can be used for connecting bus ducts laid on buildings and the like.

The perspective view which shows the state before the connection of the bus duct and connection unit in 1st Example. The perspective view of the connection unit of FIG. The perspective view which shows the state before attaching the pressing member of the connection unit of FIG. (A) is the front view which shows the pressing member in 1st Example, (b) is a partial vertical side view which shows the pressing member of the same figure (a), (c) is the pressing member of the same figure (a). FIG. The partial longitudinal cross-sectional top view which shows the connection state of the bus duct and connection unit in 1st Example. Explanatory perspective drawing which shows the state before attaching the pressing member of the connection unit of the modification of 1st Example. The perspective view which shows the state before attaching the pressing member of the connection unit of 2nd Example. (A)-(c) is a perspective explanatory drawing which shows the control means in the bus duct connection part of the 3rd-5th Example.

Explanation of symbols

10 Bus Duct 11 Conductor 11a Conductor End 13 Housing Side Plate 13c Connection Side Plate 20 Connection Unit 21 Insulating Separator 22 Conductive Connection Member 23 Connection Joint Plate 23a Substrate 23b Middle Plate 23c Outer Plate 23d Groove 23e Locking Projection 23f Insertion Holes 23g, 23h , 23i Opening 23j Engaging projection 24 Holding member 24a Substrate 24b Reinforcement plate 24c Insertion hole 24d Holding projection 24e, 24f Engaging projection 24g Recess 25 Washer 26 Bolt 27 Nut 34 Double-sided adhesive

Claims (4)

A bus duct connecting portion that is provided with a connection joint plate outside the connection portion of the bus duct conductor, a pressing member is provided outside the connection joint plate, and the connection portion, the connection joint plate, and the pressing member are fastened with a fastener. Bus duct connection, characterized in that a regulating means for regulating the separation of the pressing member from the connection joint plate in a state where the fastening of the fitting is loosened is provided on the pressing member, the connection joint plate, or both of the pressing member and the connection joint plate. Department. The bus duct connecting portion according to claim 1, wherein the restricting means is a locking portion that is formed on the connection joint plate and locks an outer surface of the pressing member. The said restricting means is comprised by the engaging part or engagement receiving part formed in the said pressing member, and the engagement receiving part or engaging part formed in the said connection joint plate, It is characterized by the above-mentioned. The bus duct connection part according to 1. The bus duct connecting portion according to claim 1, wherein the restricting means is an adhesive member interposed between the pressing member and the connection joint plate.

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