JP6214320B2 - Bus duct branching device and bus duct branching structure - Google Patents

Description

  The present invention relates to a bus duct branching device and a bus duct branching structure, and in particular, a bus duct branching device for branching from a bus duct installed in a structure such as a building or a factory, and a bus duct branching structure in which the bus duct branching device is attached to the bus duct. About.

  Bus ducts are used to construct electric trunk lines inside and outside structures such as buildings and factories. Conventionally, when branching from this bus duct, the following branching devices are used.

  In Patent Literature 1, in a bus duct branching device that is attached so as to be conductive by inserting a plug head into a plug-in hole of a duct main body, a hook that elastically locks to the peripheral edge of the opening of the plug-in hole, A bus duct branching device provided with an engagement / disengagement mechanism including a release member to be released is disclosed.

  Further, in Patent Document 2, a bolt projecting outward and a wing piece of a hinge fastening bracket are fixed to the legs sandwiching the engaging edge of the bus duct body, and the other wing piece of the fastening bracket is fixed to the above-mentioned one wing piece. An elongated hole through which the bolt is inserted and an engagement element corresponding to the engagement edge of the bus duct body are provided, and the engagement edge is engaged with the engagement edge by tightening or loosening the wing nut screwed into the bolt from the outside of the other one blade piece. A bus duct branching device is disclosed that includes a spring that urges the blades so as to be always separated so that engagement and disengagement can be achieved.

  Further, Patent Document 3 has a box, a branching terminal provided so as to protrude from the mounting surface of the box, and a locking member provided in the vicinity of the front end of the mounting surface. A bus duct branching device is disclosed in which the locking member is inserted into the locking hole and attached while rotating about the locking member. A fixing hook that is biased inward from the left and right by a spring member is provided in the vicinity of the rear end of the mounting surface of the box, and the bus duct branching device is fixed to the bus duct by engaging the fixing hook. The fixing hook is provided with a leg piece protruding substantially near the rear end of the mounting surface, the spring member is supported outside the leg piece, and the fixing hook is the spring member outside the leg piece. Therefore, a part of the fixed hook protrudes further inward from the leg piece at a substantially vertical plane with respect to the biasing direction.

JP-A-6-6929 Japanese Utility Model Publication No. 43-18458 JP 2002-135951 A

  However, in Patent Literature 1, when the bus duct branching device is fixed to the bus duct, the hook of the bus duct branching device is locked from the inside of the bus duct to the opening peripheral edge of the plug-in hole. Therefore, when the hook cannot be released due to some trouble, the bus duct branching device may not be removed unless the bus duct itself is disassembled. In addition, since the hook is located in the bus duct in the locked state, it cannot be visually confirmed from the outside whether or not it is locked, which causes a safety problem. Furthermore, if this hook or the like falls into the bus duct due to some trouble, there is a possibility that energization of the bus duct may be hindered. Considering these, it is desirable that the member for fixing the bus duct branching device to the bus duct is engaged with the bus duct from the outside.

  A configuration in which the bus duct branching device is engaged and fixed to the bus duct from the outside is proposed in Patent Documents 2 and 3, for example.

  However, in Patent Document 2, it is necessary to finally tighten a hinge-shaped fastening bracket with a wing nut at the time of installing the bus duct branching device, and also to loosen the hinge-shaped fastening bracket at the time of removal. Therefore, there has been a problem that a great deal of labor is spent on the installation and removal work of the bus duct branching device. In addition, since the wing nut is screwed onto the bolt projecting outward from the leg, the bolt, the wing nut, etc., that is, the portion required for engaging and fixing the bus duct branching device to the bus duct is the width of the bus duct branching device. There was also a problem of protruding outwards and getting in the way.

  Moreover, in patent document 3, since the fastening operation | work of a hinge-shaped fastening bracket and the operation | work which loosens this are unnecessary, the attachment and removal operation | work of a bus duct branch apparatus becomes easier than patent document 2. However, since the fixing hook is biased inward by a spring member from the outside, the spring member that protrudes outward from the leg, that is, the portion that fixes the bus duct branch device to the bus duct is outside the width of the bus duct branch device. However, the problem that the design is bad and the design is bad is not solved.

  Moreover, in patent document 3, the fixed hook operated in the case of the said fixation / fixation release is in the position most distant from the branch box in a bus duct branch device. Therefore, the installation / removal work of the bus duct branching device to / from the bus duct is generally performed from the bus duct branching device side. The hand is reached from the bus duct branching device side to the fixing hook, and this is removed against the urging force of the spring member. Therefore, there is a problem that it is difficult to perform the work. Also, the size of the bus duct branching device itself varies depending on its capacity, and when the bus duct branching device itself is large, it leads to work with an unreasonable posture.

  And it is necessary to carry out the above-described unlocking operation on at least two fixing hooks at the same time, and the inconvenience that a great deal of labor is still spent on the removal operation of the bus duct branching device has not been solved.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a bus duct branching device that is attached to the bus duct while being locked from the outside. An object of the present invention is to provide a bus duct branching structure in which a bus duct branching device is attached to a bus duct.

  It is another object of the present invention to provide a bus duct branching device that prevents a member required for locking in the bus duct width direction as much as possible and is excellent in design.

The invention according to claim 1 for solving the above problems includes a main body portion comprising a branching unit for performing branching from the conductor of the bus duct formed by housing the conductor in the housing, is supported by the main body portion the locking member against the outer surface of the housing to be locked from both sides in the width direction of the housing has, in the bus duct branching unit attached to the bus duct, on at least one or both said body portion of said locking member is rotatably supported, and the axially supported by the locking member is urged by urging means in a direction at least the locking portion is pressed against the housing in normal state, the anti-biasing force of the biasing means the axial support has been locking member in a direction in which it is rotated to have the operation unit to perform an operation for releasing the locking, wherein the biasing means is interposed between the locking member and the body portion The operation portion rotates the pivotally supported locking member to release the locking, and the locking member rotates against the urging force of the urging means by the rotation of the operation portion. It is separated from the housing .

  According to this configuration, the locking portion of the locking member pivotally supported by the main body is biased by the biasing means and is pressed against the housing by being pressed against the housing outer surface from both sides in the width direction. Thereby, the bus duct branching device is attached to the bus duct. Further, in this attached state (that is, in the locked state), the locking member of the locking member pressed against the housing is separated only by rotating the locking member in a direction against the biasing force of the biasing means. And the locking is released.

  Therefore, it is easier to attach and remove the bus duct branching device from the housing than in the past.

Further, by introducing a rotation mechanism of the locking member by the shaft into the locking / unlocking mechanism, the member required for locking / unlocking the urging means and the operating portion to the housing can be Therefore, it is possible to prevent protrusion of the urging means and the operation portion in the width direction of the bus duct as much as possible. In addition, the locking portion of the locking member that is pivotally supported by the main body is urged by the urging means and is pressed against the housing from both sides in the width direction by the urging means, whereby the bus duct is locked. A branching device is attached to the bus duct. Further, since the biasing means is interposed between the locking member and the main body portion, the biasing means or the like does not protrude from the locking member, and the bus duct such as the biasing means is prevented from protruding in the width direction as much as possible. Therefore, it is possible to provide a bus duct branch structure having an excellent appearance in design.

According to a second aspect of the present invention, in the bus duct device according to the first aspect, the operation portion is integrated with the locking member, and the operation portion and the biasing means are not aligned in the width direction of the housing. It is arranged at a position .

The invention according to claim 3 is the invention according to claim 1 or 2, wherein the operation portion is located closer to the main body portion in the arrangement direction of the main body portion and the housing than the locking portion. It is characterized by.

According to this configuration, when the bus duct branching device is attached to the housing of the bus duct, the operation of removing the bus duct branching device is located closer to the main body in the arrangement direction of the main body and the housing than the locking part. This makes it possible to reach and remove the bus duct branching device.

According to a fourth aspect of the present invention, in the bus duct branching device according to any one of the first to third aspects, the main body can be positioned on both sides in the width direction of the housing in the locked state. It has a protrusion which protrudes such that, the operating unit, the locking member and an integral, axially supported to the main body portion of the locking member, the position of the locking portion is the journaled It is characterized in that it is made with respect to the projecting portion so as to be positioned closer to the main body portion in the arrangement direction of the main body portion and the housing than the position where the main body portion and the housing are arranged.

  According to this configuration, in the locking member, the operation portion, the locking portion, and the shaft portion are sequentially arranged in the forward direction of the arrangement direction from the main body portion to the housing. Therefore, since the distance from the shaft part (fulcrum) to the operation part (power point) is larger than the distance from the shaft part (fulcrum) to the locking part (action point), the lever is biased with a smaller force according to the lever principle. The operation unit can be operated against the urging force of the means. Therefore, the latch of the bus duct housing and the latch member can be released more easily.

  According to a fifth aspect of the present invention, in the bus duct branching device according to any one of the first to third aspects, the operation portion is integrated with the locking member, and the main body portion of the locking member is moved to the main body portion. The shaft support is made at a position between the operation portion and the locking portion.

  According to this configuration, since the operating portion is integral with the locking member, and the locking member is pivotally supported by the main body at a position between the operating portion and the locking portion, the locking to the housing The pressing direction of the part and the moving direction of the operation part are opposite to each other, that is, when the locking part of the locking member is pressed against the housing of the bus duct, the operating part is separated from the main body part in the width direction. Thus, when the locking part is separated from the housing, the operation part comes close to the width direction from the main body part side. Therefore, when removing the bus duct branching device from the bus duct, the operator can move the locking portion of the locking member away from the housing of the bus duct by grasping the main body portion and simultaneously bringing the operation portion close to the main body portion. In addition, it is possible to remove the bus duct branching device.

  Further, the operation portion that is the power point of the so-called “lever” and the locking portion that is the action point are located on the opposite side via the shaft portion that is the fulcrum. Therefore, it is possible to maximize the distance from the operation unit operated by the operator to the locking portion locked to the bus duct housing. Therefore, the distance of reaching from the main body side to the bus duct side can be further shortened from the attaching operation to the removing operation of the main body portion to the housing of the bus duct, thereby further facilitating the operation.

  A sixth aspect of the present invention is the bus duct branching device according to any one of the first to fifth aspects, wherein the locking member in a direction against the biasing force of the biasing means in the locked state. It has a release blocking means for blocking the rotation.

  According to this configuration, the locked state of the housing and the locking member can be fixed by blocking the rotation of the locking member by the release blocking means. Therefore, the unlocking by some external force is prevented in advance, and the stability of the locking between the housing and the locking member is further improved.

  A seventh aspect of the present invention is the bus duct branching device according to any one of the first to sixth aspects, wherein the locking member in a direction biased by the biasing means in the unlocked state. It has the latching prevention means which prevents rotation of this.

  According to this configuration, the state where the locking of the housing of the bus duct and the locking member is released can be fixed by blocking the rotation of the locking member by the locking blocking means. Accordingly, for example, when both of the pair of locking members have a pivoting mechanism using a shaft, or when two or more pairs of locking members are provided in the main body due to the large main body, the blocking means is used. By fixing the locking members one by one in the unlocked state one by one, it is not necessary for the operator to maintain all the locking members in the unlocked state simultaneously with both hands or with several persons. Removal work becomes easier.

  The invention according to claim 8 is the bus duct branching device according to any one of claims 1 to 7, wherein a grip portion is provided in the operation portion.

  According to this configuration, the operability of the operation unit is improved by grasping the grasping unit, and the work for removing the main body can be performed more easily.

According to a ninth aspect of the present invention, in the bus duct branching device according to any one of the first to eighth aspects, the urging means comprises an elastic packing, a leaf spring, or a coil spring.
According to this configuration, the urging means can be easily formed into a shape suitable for urging in the rotation direction of the locking member pivotally supported by the main body portion.

  The invention according to claim 10 is the bus duct branching device according to any one of claims 1 to 9, wherein a cushioning member is attached to a surface of the main body portion facing the housing. To do.

  According to this configuration, in the mounting state of the main body portion to the housing of the bus duct, the space between the main body portion attached to the housing and the opposing surface of the housing is filled with the cushioning member. Due to the repulsive force, the locking member is securely locked to the housing of the bus duct, so that the main body portion is not rattled and the main body portion can be stably attached to the bus duct.

  The invention according to claim 11 is the bus duct branching structure in which the bus duct branching device according to any one of claims 1 to 10 is attached to the bus duct, wherein the bus duct has a recess into which the locking part is fitted. It is characterized by having.

  According to this configuration, when the locking member is locked to the outer surface of the housing of the bus duct, the locking portion of the locking member can be fitted into the recess of the bus duct. It can be held.

  According to the present invention, the bus duct branching device can be prevented from projecting in the width direction of the bus duct of parts required for locking / unlocking to the bus duct housing (such as urging means and operating portion). It is possible to provide a bus duct branching structure that not only does not interfere with the design but also has excellent design.

  In addition, since it is easy to attach / remove the bus duct branching device to / from the bus duct housing, it is possible to speed up the branching operation and the removing operation from the entire bus duct laid on the structure.

It is a figure showing bus duct branching device 10 concerning a 1st embodiment of the present invention. FIG. 4 is an exploded perspective view for explaining a locking member 20. It is a figure which shows the bus duct 60 which comprises a bus duct branch structure with the bus duct branch apparatus 10. FIG. It is a figure for demonstrating the attachment to the bus duct 60 of the bus duct branching apparatus 10. FIG. It is a figure for demonstrating the attachment to the bus duct 60 of the bus duct branching apparatus 80 which concerns on 2nd Embodiment of this invention. It is a figure for demonstrating the modification 1 which concerns on the latching member of the bus duct branching apparatus 80 which concerns on 2nd Embodiment of this invention. It is a figure for demonstrating the modification 2 which concerns on the latching member of the bus duct branching apparatus 80 which concerns on 2nd Embodiment of this invention. The bus duct branching apparatus according to the first and second embodiments of the present invention is a diagram for explaining a third modification in which the aspect of the shaft support of the leg piece and the locking member is changed. It is a figure for demonstrating the modification 4 which concerns on the urging | biasing means of the bus duct branching apparatus 10 which concerns on 1st Embodiment of this invention. It is the bus duct branching apparatus 80 of 2nd Embodiment of this invention, and is a figure for demonstrating the attachment to the housing 66 although it concerns on the modification 5 which changed the shape of the leg piece. It is a figure for demonstrating the connection unit 150 which is the bus duct 130 by which the conductor was coat | covered with the insulator, and this bus duct 130 is a connection part. It is a figure for demonstrating attachment to the connection unit 150 of the bus duct branching apparatus 170 which concerns on the modification 6 of the 1st and 2nd embodiment of this invention. It is a principal part exploded view for demonstrating the further modification 7 of the latching member of the bus duct branching apparatus 80 which concerns on 2nd Embodiment of this invention, and the leg piece which supports this. It is a figure for demonstrating the attachment to the housing 66 of the bus duct 60 of the bus duct branching apparatus 80 which concerns on the modification 7. FIG. It is a principal part exploded view for demonstrating the securing member and leg piece of the bus duct branching apparatus 80 which concern on the modification 8. FIG. It is a figure for demonstrating the securing member and leg piece of the bus duct branching apparatus 80 which concern on the modification 8. FIG. It is a figure which shows the attachment to the housing of the bus duct 60 of the bus duct branching apparatus 80 which concerns on the modification 8. FIG. It is a figure for demonstrating the securing member and leg piece of the bus duct branching apparatus 80 which concern on the modification 9. FIG.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
The first embodiment of the bus duct branching device according to the present invention, which is attached to the bus duct and branches off from the conductor of the bus duct, is an example in which the bus duct branching device is attached to the horizontally arranged bus duct from above. This will be described with reference to FIGS. The direction in which the bus duct is disposed and the direction in which the bus duct branching device is attached are not limited to this direction.

  1 is a diagram showing a bus duct branching device according to an embodiment of the present invention, in which FIG. 1 (a) is a front view, FIG. 1 (b) is a side view, FIG. 1 (c) is a rear view, and FIG. (D) is a bottom view. FIG. 2 is an exploded perspective view for explaining the locking member according to the present embodiment, and FIG. 3 is a diagram showing a bus duct that constitutes a bus duct branching structure together with the bus duct branching device according to the present embodiment. 3A is a front view, FIG. 3B is a side view, and FIG. 3C is a bottom view. FIG. 4 is a side view for explaining the mounting of the bus duct branching device according to the present embodiment to the bus duct. FIG. 4 (a) is before mounting, FIG. 4 (b) is during mounting, and FIG. ) Shows the state after the attachment, and FIG. 4D shows the state in which the rotation of the locking member 20 is prevented by the screw 50 (release prevention means).

  Hereinafter, the arrow x direction in FIG. 1A is referred to as a length direction, the arrow y direction is referred to as a width direction, and the arrow z direction in FIG. 1B is referred to as a height direction. The same applies to FIG.

  As shown in FIG. 1, the bus duct branching device 10 has a box-shaped main body 12 having a substantially rectangular cross section having branching means for branching from a conductor of the bus duct. From the back surface of the main body 12, four pairs of contacts 16, which are clip-shaped and sandwich a conductor of a bus duct to be described later to take a branch, are respectively connected to the outside, i.e., in a mounting direction to the bus duct to be described later. Projects downward in the vertical direction.

  The contacts 16 are covered with an insulating holder 18 so that each pair of contacts 16 is insulated from the other pairs of contacts 16. A locking member 20 that protrudes downward in the height direction from the back surface of the main body 12 and is locked from both sides in the width direction to the outer surface of the housing is provided on the outer side in the arrangement direction, that is, the width direction of the contacts 16. Supported by part 12.

  A cable 22 for transmitting power to another device is attached to the bottom surface of the main body 12, and the front surface is a cover 24 that can open and close the main body 12. A key hole 26 into which a key for restricting the opening and closing of the lid 24 is inserted is provided at the place.

  On the back surface of the main body portion 12, a single plate-like body 29 having a substantially rectangular base surface 28 having an opening 28 a through which the contact 16 and the holder 18 are inserted in a substantially central portion is formed on the base surface 28. As shown in FIG. 2, the plate-like body 29 is fixed to the back surface of the main body portion 12, and lowers in the height direction (that is, the main body at both side edges 28 b (that is, both side edges in the width direction) of the base surface 28. A leg piece 30 (protruding portion) that is bent in a direction away from the portion 12 and protrudes downward in the height direction from the main body portion is formed. Furthermore, the plate-like body 29 has reinforcing pieces 32 that are bent downward in the height direction at both longitudinal side edges 28 c of the base surface 28.

  The leg pieces 30 (protruding portions) have a substantially rectangular flat plate portion 34 and a substantially rectangular flange shape that is bent outwardly in the width direction of the main body portion 12 at both side edges 34 a in the length direction of the flat plate portion 34. Thus, the support piece 36 is provided with a shaft hole 36a for supporting a locking member 20 described later. The shaft hole 36 a is provided on the lower side of the support piece 36 at a position facing each other.

  The locking member 20 is pivotally supported by the support piece 36 and is disposed in parallel with the flat plate portion 34 of the leg piece 30. A rotating fixed piece 42 which is bent and extended toward the leg piece 30 side at both side edges 40a in the length direction of the moving base 40 and located outside the support piece 36, and the leg piece 30 in the rotating fixed piece 42 is close to the leg piece 30. It has a locking piece 42b (locking portion) that is provided at a substantially central portion of the side edge 42a and protrudes in a substantially triangular shape so as to approach the leg piece 30 from the lower side in the height direction to the upper side. Furthermore, the rotation fixing piece 42 is provided with a shaft hole 42c that is positioned corresponding to the shaft hole 36a in a state of being superimposed on the support piece 36. A shaft screw 44 (FIG. 1) is provided in the shaft holes 42c and 36a. By inserting (b) and FIG. 1 (c)), the locking member 20 is pivotally supported by the leg piece 30 so as to be rotatable.

  Further, the locking member 20 is bent toward the leg piece 30 at the lower edge 40b of the rotation base 40, and serves as a holding piece 46 for holding an urging means described later. Further, the locking member 20 has an operation portion 48 that is bent in a direction (outward in the width direction) away from the leg piece 30 at the upper edge 40c of the rotation base 40 and further bent upward.

  Further, a screw hole 40d in which a female screw is cut is provided on the lower side of the rotation base 40, and a screw 50 (release prevention means) (see FIGS. 1B and 1C) is provided. The locking member 20 is prevented from rotating by being screwed into contact with the flat plate portion 34 of the leg piece 30 at the tip of the screw 50.

  The urging means is a leaf spring 52 formed by bending a rectangular metal plate into a dogleg shape. The leaf spring 52 is loaded between the leg piece 30 and the locking member 20 with the bent edge 52 a facing upward, and is held on the holding piece 46. The plate spring 52 is provided with holes 52b and 52b having a diameter larger than that of the above-described screw hole 40d at positions facing the bent plate. The screw 50 screwed into the screw hole 40d is inserted into the hole 52b.

  Next, the assembly of the locking member 20 and the leaf spring 52 to the leg piece 30 (the protruding portion of the main body portion 12) will be described. First, the flat plate portion 34 of the leg piece 30 and the rotation base portion 40 of the locking member 20 are opposed to each other, and the rotation fixing piece 42 is overlapped on the outside of the support piece 36. At this time, the leaf spring 52 is loaded between the flat plate portion 34 and the rotation base portion 40 with the bent edge 52a facing upward. Then, the shaft screw 44 is inserted into the shaft hole 36 a of the support piece 36 and the shaft hole 42 c of the rotation fixing piece 42, and the tip of the shaft screw 44 is located in the bent portion of the leaf spring 52. That is, the leaf spring 52 is disposed so as to straddle the tip of the shaft screw 44. As described above, the positioning of the leaf spring 52 is stabilized in cooperation with the holding piece 46 described above.

  Then, the screw 50 (release prevention means) screwed into the screw hole 40d of the rotation base 40 is further screwed in until the tip thereof is inserted through the hole 52b. It should be noted that the tip of the screw 50 (release prevention means) inserted through the screw hole 40d of the rotation base 40 is maintained in a state where it does not reach the flat plate portion 34 and is not screwed in all of the screws 50. (See FIG. 1 (b)). This is because the operation unit 48 can be operated to some extent against the urging force of the leaf spring 52.

  In addition, a cushioning member 91 such as packing having a predetermined elasticity is attached to the lower surface of the base surface 28 (see FIG. 1C).

  Next, the bus duct 60 to be attached to the bus duct branching apparatus 10 according to the present embodiment will be described.

  As shown in FIG. 3, the bus duct 60 includes a housing 66 having a substantially rectangular cross section formed by fitting housing halves 62 and 64 having a substantially U-shaped cross section from the concave side. Inside the housing 66, a strip-like four-wire conductor 68 is extended by an insulator or the like (not shown) as an insulating support member so that the side surfaces 68a in the width direction face each other and extend in parallel. They are fixed to each other and arranged in a state of being separated at a predetermined interval. In other words, in the present embodiment, the bus duct 60 employs an air insulation method.

  In the upper surface 66a and the lower surface 66b (see FIG. 3B) of the housing 66, a plurality of openings 70 (FIG. 3A) are provided at predetermined intervals in the extending direction (length direction) of the housing 66. Reference) is provided. The opening 70 is a long hole extending in the width direction of the housing 66 sized to expose the four-wire conductors 68, and the opening edge 70 a facing the length direction has an extending direction of the housing 66. The cutout portions 70b extending in the (length direction) are formed so as to face each other.

  The opening 70 is closed by a substantially rectangular cover 72 attached to the housing 66 from the inside of the housing 66. The cover 72 is attached to the housing 66 by locking the head portion of the screw 74 whose tip is screwed to the cover 72 to the edge of the notch 70b. That is, the operator picks up the head of the screw 74 and re-engages the head of the screw 74 to the notch 70 b facing across the opening 70 to open the opening 70. In this way, the opening 70 can be opened and closed.

  On both side surfaces 66c of the housing 66, groove portions 66d and 66e that are concave portions extending in the length direction of the housing 66 are formed so as to be opposed to each other, and between the groove portions 66d and 66e on the both side surfaces 66c. The housing halves 62 and 64 are fixed with screws at predetermined intervals in the length direction. A notch 76 exposing the conductor 68 is formed at both ends in the length direction of the upper surface 66a and the lower surface 66b of the housing 66, and the conductors 68 are connected to each other in a region where the notch 76 is present. It has become. After the conductors 68 are connected to each other, a notch 76 serving as a connecting portion is closed by a closing member (not shown), and a plurality of bus ducts 60 are connected to each other in the same manner, so that a structure such as a building or a factory is connected. A bus duct trunk line laid on the object is formed.

  Although not shown in the drawings, the conductors 68 in the abutted state are appropriately connected, for example, along a conductive contact plate or the like and fastened with a fastener such as a bolt and nut.

  Next, attachment of the bus duct branching apparatus 10 according to the present embodiment to the housing 66 of the bus duct 60 will be described.

  As shown in FIG. 4A, the bus duct 60 extends in the horizontal direction. That is, in this drawing, the bus duct 60 is depicted as a cross section of the bus duct 60 extending in the front-rear direction. With respect to the opening 70 provided on the upper surface 66a of the housing 66 in the bus duct 60, the contact 16 and the holder 18 are moved in the direction of the arrow 100 in correspondence with the alignment direction of the contacts 16 and the alignment direction of the conductors 68 from above. Insert (down).

  Then, as the contact 16 and the holder 18 are inserted, as shown in FIG. 4B, the locking piece 42 b (locking portion) that protrudes inward in the width direction of the housing 66 is formed in the width direction of the housing 66. The locking member 20 contacts the side surface 66c and rotates in the direction of the arrow 200, that is, outward, against the urging force of the leaf spring 52. Further, when the contact 16 and the holder 18 are moved downward, the acute angle portion of the locking piece 42b that continues to slide on the side surface 66c in the width direction of the housing 66 becomes a groove 66d as shown in FIG. When approached, the leaf spring 52 is rotated in the direction of the arrow 300 by the urging force of the leaf spring 52 and fitted into the groove 66d of the housing 66, and the locking piece 42d is locked to the both side surfaces 66c of the housing 66 in the width direction. The

  As described above, the bus duct branching device 10 is attached to the housing 66 of the bus duct 60.

  Moreover, what is necessary is just to perform reverse operation | movement, when removing the bus duct branching apparatus 10. FIG. That is, the operation part 48 located on the main body part 12 side with respect to the locking piece 42b is moved outward to release the locked state. Then, the contact 16 and the holder 18 inserted into the opening 70 of the housing 66 in the released state are pulled upward, and the bus duct branching device 10 is removed from the housing 66.

  Therefore, according to the bus duct branching device 10 according to the present embodiment, it is possible to first attach and remove the bus duct branching device 10 to and from the bus duct 60 with one touch.

  Further, in the operation of attaching and detaching the bus duct branching device 10 to and from the housing 66, the locking piece 42b pressed against the housing 66 simply by rotating the locking member 20 in a direction against the urging force of the leaf spring 52 is provided. The release from the groove 66d is released. Therefore, it is easier to unlock the bus duct branching device 10 from the housing 66 than in the prior art, and it is easy to remove it.

  In this unlocking operation, it is only necessary to reach the operation part 48 from the bus duct branching device side (that is, the hand is extended to the locking piece 42b located further below the operation part 48 and locked. The work of separating the piece 42b from the groove 66d is unnecessary), and the work is easier. This is particularly advantageous when the bus duct branching device is large due to its large electric capacity.

  In addition, by introducing a rotation mechanism of the locking member 20 around the shaft screw 44 into the locking / unlocking mechanism, the locking member 20 such as the operation portion 48 and the leaf spring 52 and the housing 66 are connected. The portion required for locking / unlocking can be arranged at a position offset from the moving direction of the locking piece 42b. Therefore, the member required for locking is prevented from protruding in the width direction of the bus duct 66.

  Further, since the leaf spring 52 is interposed between the locking member 20 and the leg piece 30, as understood from FIGS. 1A to 1D, the locking member 20 extends outward in the width direction (y direction). The leaf spring 52 does not protrude in the direction, the protrusion of the leaf spring 52 and the like in the width direction of the bus duct 60 can be prevented, and the bus duct branching device is excellent in appearance in design.

  According to the present embodiment, in the locking member 20 pivotally supported on the leg piece 30 of the main body 12, the portion (shaft portion) supported by the operation portion 48, the locking piece 42 b and the shaft screw 44 is provided. Since they are located in order, the distance from the shaft part (fulcrum) to the operation part 48 (power point) is larger than the distance from the shaft part (fulcrum) to the locking piece 42b (action point), The operation portion 48 can be operated against a biasing force by the leaf spring 52 (biasing means) with a smaller force. Therefore, the locking of the housing 66 and the locking member 20 of the bus duct 60 can be more easily performed.

  In addition, as shown in FIG. 4D, when the screw 50 (release prevention means) is used, the screw 50 (release prevention means) is screwed in the direction of the arrow 400 and the tip of the screw 50 (release prevention means) reaches the flat plate portion 34. The locking member 20 can be prevented from pivoting in the opening direction (because the distal end of the screw 50 is in contact with the flat plate portion 34 even if the operation portion 48 is moved outward). So that it does n’t move.)

  Therefore, unlocking by some external force such as an operator accidentally touching the operation unit 48 is prevented in advance, and the stability of locking between the housing 66 and the locking means is further improved.

(Second Embodiment)
Next, referring to FIG. 5, the second embodiment of the bus duct branching device according to the present invention is shown as an example in which the bus duct branching device is attached from above to the horizontally arranged bus duct as in the first embodiment. To explain. FIG. 5 is a diagram for explaining how the bus duct branching device 80 according to the second embodiment of the present invention is attached to the bus duct 60. FIG. 5A shows a state before installation, FIG. 5B shows a state during installation, and FIG. 5C shows a state after installation. It should be noted that the same components as those in the above embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The bus duct branching device 80 is common in that the locking member is pivotally supported by the projecting leg piece 30 (projecting portion) of the main body 12 and is constituted by the biasing means. Slightly different.

  Specifically, as shown in FIG. 5, in the leg piece 30, the support piece 82 extends to the lower end of the flat plate portion 34, and the shaft hole of the support piece 82 (the shaft hole 36 a of the first embodiment). Is equivalent to the upper end portion of the support piece 82.

  The locking member 84 has a substantially rectangular rotation base 86 disposed in parallel with the flat plate portion 34 in a state of being pivotally supported by the support piece 82, and legs on both side edges in the length direction of the rotation base 86. A rotation fixing piece 88 which is bent and extended on the side of the piece 30 and is located outside the support piece 82, and above the lower end of the side edge 88a adjacent to the leg piece 30 in the rotation fixing piece 88. A substantially triangular locking piece 88b (locking portion) protruding so as to be close to the leg piece 30 to the center of the side edge 88a in the height direction, and an upper edge 86c of the rotation base 86 from the main body portion 12. And a plate-like operation portion 90 that is bent and extended so as to extend upward while being separated.

  The rotation fixing piece 88 is provided with a shaft hole (corresponding to the shaft hole 42c of the first embodiment) in the vicinity of the upper end thereof, and is aligned with the shaft hole of the support piece 82 by this shaft hole. Screws 44 pass through these shaft holes.

  The leaf spring 52 (biasing means) is disposed in a state of straddling the shaft screw 44 with the bent edge 52a facing downward.

  As a result, the locking piece 88b (locking portion) is positioned below the shaft portion, and the operation portion 90 is positioned above the shaft portion.

  Next, attachment of the bus duct branching device 80 according to the present embodiment to the housing 66 of the bus duct 60 will be described. First, as shown in FIG. 5A, the bus duct branching device 80 is disposed at a position corresponding to the opening 70 of the bus duct 60 with the contact 16 and the holder 18 facing downward. Then, the bus duct branching device 80 is moved downward, that is, in the direction of the arrow 500.

  As a result, as shown in FIG. 5B, the locking piece 88 b (locking portion) abuts against the side surface 66 c of the housing 66 and resists the urging force of the leaf spring 52, and moves outward in the width direction of the housing 66. The sharp angle portion moves downward while sliding on the side surface 66c. Then, when further moved downward, the acute angle portion of the locking piece 88b reaches the groove 66d of the housing 66, and is fitted into the groove 66d by the urging force of the leaf spring 52 and locked (FIG. 5C). See).

  In this state, each pair of contactors 16 is in a state where the conductor 68 of the bus duct 60 is sandwiched between them, so that a good branch can be made. At the same time, since the cushioning member 91 is interposed between the base surface 28 fixed to the lower surface of the main body 12 and the upper surface 66a of the housing 66, the bus duct branching device 80 is attached to the housing 66 between the two. Even when there is a small gap, the gap is filled by the cushioning member 91, and the locking member 88 is reliably locked to the housing 66 by the repulsive force of the cushioning member. The state of attachment to the 12 bus ducts 60 can be maintained.

  When removing the bus duct branching device 80 from the housing, the above operation may be reversed. First, the rotation fixing piece 88 is moved by moving the operation portion 90 toward the main body portion 12 against the urging force of the leaf spring 52. The locking piece 88b is moved away from the groove 66d, and the locking is released. The removal is completed by pulling out the bus duct branching device 80 in the unlocked state.

  As described above, according to the bus duct branching device 80 and the bus duct branching structure according to the present embodiment, there are the same effects as in the first embodiment, and the operation unit 90 is moved inward when the bus duct branching device 80 is removed, that is, Since the main body part 12 can be moved and moved as it is moved to the main body part 12 side, the removal work of the bus duct branching device 80 becomes easier.

  In addition, since the operation portion 90 serving as a so-called “lever” power point and the locking piece 88b serving as the action point are located on the opposite side via the shaft screw 44 serving as a fulcrum, the operation portion 90 operated by the operator The distance to the locking piece locked to the housing 66 of the bus duct 60 can be maximized. Therefore, from the work of attaching the main body 12 to the housing 66 of the bus duct 60 to the work of removing it, it is possible to further shorten the distance to reach in the attaching direction, and the work is further facilitated.

(Modification of the above embodiment)
Although the embodiments of the present invention have been described above, the present invention can be expanded and modified within the scope of the gist, and in addition to the configurations of the inventions and embodiments, these partial configurations are described in this specification. What is specified by changing to other configurations disclosed, or what is specified by adding other configurations disclosed in this specification to these configurations, or a partial operational configuration of these partial configurations can be obtained Also included are high-level concepts that are identified by being deleted at the limit. For example, the following modifications are also included.

(Modification 1)
For example, the structure of the locking member is not limited to the above embodiment, and various examples can be considered. This example is a modification of the locking member of the bus duct branching device 80 according to the second embodiment. FIG. 6 is a diagram for explaining a bus duct branching device 80 according to this modified example, and FIG. 6 (a) is a diagram for explaining locking and releasing of the locked state according to modified example 1a. FIG. 6B is a diagram for explaining locking in the locked state according to the modified example 1b and release of the locked state, and FIG. 6C shows a locked / engaged state according to the modified example 1c. It is a figure for demonstrating fixation of a stop release state, and cancellation | release of the fixation. In addition, the left figure of each figure is the figure which looked at the bus duct 60 to which the bus duct branching apparatus 80 was attached from the side, and the figure on the right is the figure which looked at this from the length direction.

  Modification 1a: As shown in FIG. 6 (a), a screw hole with a female screw through which a screw 92 (release blocking means) is inserted is provided at a substantially central portion of the operation unit 90. The screw 92 is screwed into the screw hole until the tip comes into contact with the main body 12. As a result, in the state where the locking piece 88b is locked to the groove 66d, the locking member 84 is prevented from rotating in the direction against the urging force of the leaf spring 52, and the locked state is stably maintained. In other words, even if some external force is applied, it is possible to prevent problems such as the locking being released and the bus duct branching device 80 coming off the bus duct 60. In order to release the locked state, as shown in the right diagram of FIG. 6A, the screw 92 may be loosened so that the tip thereof is separated from the main body portion 12 by a predetermined distance.

  Modification 1b: As shown in FIG. 6B, an operation portion cap 94 having a recess 94a into which the upper portion of the operation portion 90 is fitted can be used as a release prevention means. The operation portion cap 94 is placed on the upper portion of the operation portion 90, and the side surface 94b of the operation portion cap 94 comes into contact with the main body portion 12, so that the leaf spring 52 of the locking member 84 is locked in the groove 66d of the locking piece 88b. The rotation in the direction against the urging force is prevented, and the locked state is stably maintained.

  Modification 1c: As shown in FIG. 6C, tongue pieces 96 are extended downward from both sides of the lower surface of the main body 12 to a height position above the support piece 82. Is provided with a screw hole 96a in which a female screw is cut. A screw hole in which an internal thread is cut is also provided at a position of the operation unit 90 facing the screw hole 96a.

  These screw holes can be screwed with a screw 98 which is a release and locking prevention means, but their opposing angles are different. That is, when the screw 98 is screwed into the screw hole of the operation portion 90 in the locked state, the screwing direction of the screw 98 and the axial direction of the screw hole 96a do not match, and the screw 98 is at the opening edge of the screw hole 96a. As a result, the locking member 84 is prevented from rotating in the locking release direction.

  Further, when the screw 98 is screwed into the screw hole of the operation portion with the operation portion 90 being operated toward the main body portion 12 side, the screwing direction of the screw 98 and the axial direction of the screw hole 96a coincide with each other. The screw hole 96a can be screwed, and the operation portion 90 is screwed to the tongue piece 96. Accordingly, the unlocked state is maintained. That is, according to the bus duct branching device 80 according to the modified example 1c, the locked state / unlocked state can be maintained with a simple configuration.

  In addition, the shape of the member which comprises the rotation prevention means of the latching member 84 in a latching state and / or a latch release state, a structure, etc. may be made | formed suitably. Moreover, you may provide separately the prevention means of the rotation of the latching member in a latching state or a latching release state.

(Modification 2)
In addition, it is preferable to provide a grip portion on the operation portion. FIG. 7 is a view for explaining a gripping portion provided in the operation unit 90 of the bus duct branching device 80 according to the modification of the second embodiment of the present invention, and FIG. FIG. 7B is a diagram for explaining the grip portion 104 according to the modified example 2b. In addition, the left figure of each figure is the figure which looked at the bus duct 60 to which the bus duct branching apparatus 80 was attached from the side, and the figure on the right is the figure which looked at this from the length direction.

  Modification 2a: As shown in FIG. 7 (a), the distal end of the operation unit 90 is bent once in a direction away from the main body 12, and further bent downward around the middle part of the bent part. A grip portion 102 having a cross-sectional view shape is formed.

  Modification 2b: As shown in FIG. 7B, the gripping portion 104 is formed by bending the tip of the operation portion 90 once so as to move downward while moving away from the main body portion 12.

  According to the gripping part according to these modified examples, the operation by the operation part 90 becomes easy. Moreover, according to the grip part 104 which concerns on the modification 2b, it becomes possible to form a grip part by one bending of a locking member. It is also possible to protect the gripping portions by attaching packings, bushings or the like as appropriate. In addition, an opening may be provided in the operation unit of the above embodiment to form a gripping unit. The configuration of the gripping portion includes all the gripping portions as long as they can be gripped and facilitate attachment / detachment of the bus duct branching device.

(Modification 3)
Moreover, it is also possible to change the aspect of the axial support of the locking member to the leg piece which the main-body part 12 protrudes. FIG. 8 is a diagram for explaining a modified example in which the bus duct branching device according to the first and second embodiments of the present invention is modified in the manner of the axial support of the leg piece and the locking member. The figure on the left is a view of the bus duct 60 to which the bus duct branching device is attached as viewed from the side, and the figure on the right is a view of the bus duct 60 as viewed from the length direction.

  In this modification, a rectangular slit 106a extending in the width direction (length direction) of the flat plate portion is provided at a position slightly above the center in the height direction of the flat plate portion 106 of the leg piece 30. A small circular hole is provided at the central position in the longitudinal direction of the upper portion of the slit 106a.

  The locking member 108 has a substantially rectangular shape having a width substantially equal to the slit 106a and a width that can be inserted into the slit 106a, and is positioned so as to overlap the flat plate portion 106 from the outside. A locking piece 112 that is bent inwardly at the lower edge 110a of the base 110 and inserted through the slit 106a, and further bent inward and inward so that the tip can be fitted into the groove 66d of the housing 60, and pivoting A plate-like operation portion 114 which is bent and extended outward and upward at the upper edge 110b of the base portion 110 and further has a tip portion bent and extended upward.

  A hole having substantially the same diameter as the circular hole of the flat plate part 106 is provided at a substantially central part of the rotation base part 110, and a bolt 116 is loosely inserted into these two holes, and a locking member 108 is provided by a nut 118. Are loosely coupled to the leg piece 30. A coil spring 120 is externally fitted to the shaft portion of the bolt 116 and is loaded between the head portion 116 a of the bolt 116 and the flat plate portion 106.

  In other words, the flat plate portion 106 and the rotation base portion 110 are urged by the coil spring 120 so that they are in surface contact with each other in the normal state, whereby the locking piece 112 is normally urged toward the groove portion 66d of the housing 60 and the groove portion. 66d. Then, when the operation portion 114 is rotated in the direction of the arrow 600, that is, toward the main body portion 12, the locking member 108 rotates against the biasing force of the coil spring 120, and the locking piece 112 moves from the groove 66d. It separates and the lock is released.

(Modification 4)
Further, the urging means does not need to use the leaf spring 52 or the coil spring 120 as in the above embodiment, and a hard or soft packing material 122 may be used as shown in FIG. Of course, it is also possible to use a coil spring as shown in FIG.

  9 has a configuration in which the screw 50 (release prevention means) used in the first embodiment is not provided, and a hard or soft packing material is provided between the rotation base 40 and the flat plate portion 34. 122 is arranged, and the holding piece 46 prevents the packing material 122 from falling.

  Moreover, in the said embodiment, both the locking members can be rotated in a pair of locking member which latches the housing 60 from the width direction both sides to the leg piece 30 (projection part) which protrudes below from the main-body part 12. However, the present invention is not limited to the above-described embodiment, and it is sufficient that only at least one locking member is rotatably provided. A case in which four locking members are provided so as to be rotatable is also conceivable. At that time, it is preferable to provide a locking prevention means (refer to the screw 98 or the like of the modified example 1c) for rotating the locking member in the unlocked state. For example, by maintaining the unlocking state by the two locking members by this locking prevention means, by operating the operation part appropriately and releasing the locking of the other two locking members, The bus duct branching device can be removed more easily.

  When only one locking member is used, the opposite one is used as a hook-shaped locking member whose one end is fixed to the main body 12, and this hook is hooked on the groove 66 d of the housing 60, and the other is It is also possible to use the locking member pivotally supported according to the invention.

(Modification 5)
Further, the flat plate portion 34 of the leg piece 30 may be provided with a notch portion for aligning the bus duct branching device and the housing of the bus duct 60. FIG. 10 is a view for explaining the mounting of the bus duct branching device 80 according to the modification of the second embodiment of the present invention to the housing 66.

  FIG. 10A is a diagram showing the state before mounting, FIG. 10B is a diagram illustrating the state during mounting, and FIG. 10C is a diagram illustrating the state after the mounting. In addition, the left figure of each figure is the figure which looked at the bus duct 60 to which the bus duct branching apparatus 80 was attached from the side, and the figure on the right is the figure which looked at this from the length direction.

  As shown in FIG. 10A, in the present modification, the flat plate portion 124 of the leg piece 30 has a width direction (length direction) center position of the lower edge 124a to a height direction substantially center position thereof. A substantially rectangular vertically cut-out window 124b is provided.

  According to this configuration, for example, when the housing 66 of the bus duct 60 is assembled, the screw 66f (see FIG. 3) screwed into the side surface 66c is provided at the same position in the length direction as the opening 70, The positioning effect between the opening 70 and the contact 16 and the holder 18 to be inserted into the opening 70 can be exhibited, and the contact 16 and the like can be reliably inserted into the opening 70.

  Needless to say, it is not always necessary to provide a breaker in the main body 12, and the holder 18 is not necessarily an essential condition.

(Modification 6)
The bus duct 60 used in the bus duct branching device and the bus duct branching structure is not limited to the above embodiment, and may be a two-wire, three-wire, or five-wire or more bus duct. 11 may be a so-called insulation type bus duct in which a conductor covered with an insulator as shown in FIG. 11 is housed in a housing, or a bus duct that covers an insulator and is arranged with a conductor spaced apart by a predetermined distance. It may be a simple bus duct, and the housing may have any shape and configuration.

  FIG. 11 is a view for explaining a bus duct 130 in which the conductor is covered with an insulator and a connection unit 150 which is a connection portion between the bus ducts 130. 11 (a) is a plan view, FIG. 11 (b) is a front view, and FIG. 11 (c) is a cross-sectional view taken along line AA of FIG. 11 (b). As shown in FIG. 11C, the bus duct 130 is composed of a three-wire conductor 134 covered with an insulator 132 and closely adhered thereto, and a side plate 136 having a U-shaped cross section and a spacer 138 having a U-shaped cross section. And a housing 140 enclosed in the left-right direction. The side plates 136 of the housing 140 are fastened together with bolts and nuts. Further, the bus duct 130 is connected by the connection unit 150 in a state where the conductor 134 is abutted.

  As shown in FIG. 11A, the connection unit 150 includes a separator 156 that insulates the conductive connection plate 152 disposed along the in-phase conductor end portion 134a and the outer-phase and outermost connection side plates 154 from each other. , And a fastener inserted through an insulating sleeve for fastening them together. As the fastener, a bolt 158, a nut 160, a washer 162, and a presser fitting 164 are used.

  As shown in FIG. 11A, the upper and lower surfaces of the connection unit 150 are closed by a cover plate 166. The lid plate 166 is provided with an opening (not shown) at a substantially central portion, and branching is performed by inserting a contact of a bus duct branching device described later into the opening. Further, slits 166b extending in the length direction of the bus duct 130 are provided at both ends in the width direction on the front side (left side in the drawing) of the lid plate 166.

  Next, a bus duct branching device 170 for branching from the connection unit 150 will be described with reference to FIG. FIG. 12 is a view for explaining the attachment of the bus duct branching device 170 to the connection unit 150. FIG. 12A shows a state before attachment, FIG. 12B shows a state during attachment, and FIG. 12C shows a state after attachment.

  As shown in FIG. 12 (a), a hook piece 174 that is inserted into the slit 166b of the cover plate 166 and hooked on the lower surface of the front side (the left side in the figure) of the main body 172 containing the breaker and the like of the bus duct branching device 170 is downward. Is provided to protrude. A pair of locking members described in detail in the second embodiment of the present invention is provided on the lower surface of the rear side (right side in the figure) of the main body 172 on each of the pair of leg pieces 30 protruding downward from both sides of the main body 172. Three contacts 176 project downward from the lower surface of the main body 172 at a position closer to the front.

  Next, the attachment of the bus duct branching device 170 to the connection portion (connection unit 150) of the bus duct 130 will be described. First, as shown in FIG. 12A, the upper surface of the connection unit 150 (the surface to which the cover plate 166 is attached) and the lower surface of the main body 172 of the bus duct branching device 170 are arranged to face each other. Then, as shown in FIG. 12B, the hook piece 174 is inserted into the slit 166b of the cover plate 166 in the connection unit 150, and the main body 172 is rotated in the direction of the arrow 700 by the lever principle using the hook piece 174 as a fulcrum. Then, the contact 176 is inserted into the opening at the substantially central portion of the cover plate 166. At the same time, as shown in FIG. 12C, the locking piece 88b (locking portion) of the locking member is locked to the outer end portion 136a of the side plate 136 in the bus duct 130 (see FIG. 11C). Thus, the installation and locking of the bus duct branching device 170 to the bus duct 130 are completed.

  In this branched state, the contact 176 of the bus duct branching device 170 is pressure-inserted between the conductive connecting plates 152 so that the branch can be taken.

(Modification 7)
Further, in the bus duct branching device 80 according to the second embodiment, a further modification of the locking member and the leg piece pivotally supporting the locking member will be described with reference to FIGS. FIGS. 13A and 13B are views for explaining the locking member and the leg piece according to the present modification. FIG. 13A is an exploded side view of the main part, and FIG. 13B is an exploded front view of the main part. 14A and 14B are views showing the installation of the bus duct branching device 80 according to the present modification to the housing of the bus duct 60. FIG. 14A shows a state before installation, FIG. ) Is a diagram showing a state after mounting.

  As shown in FIG. 13, the leg piece 180 is substantially rectangular and has a flat plate portion 182 having a notch portion 182b extending upward from substantially the center of the lower edge 182a, and both sides of the flat plate portion 182 in the length direction. And a support piece 184 that is bent and extended outward in the width direction at the edge 182c and has a shaft hole 184a for supporting a locking member 186 described later.

  The locking member 186 is bent and extended in the direction of the leg piece 180 at a substantially rectangular turning base 188 facing in parallel with the flat plate part 182 of the leg piece 180 and both side edges 188a in the length direction of the turning base 188. And a rotation fixing piece 190 disposed outside the support piece 184.

  The rotation base 188 has a chamfered rectangular opening 188b having four corners chamfered slightly below the center thereof, and screws 192 are screwed into positions near both sides in the length direction near the upper edge 188c. Screw holes 188d for female threads for cutting are provided. The opening 188b constitutes a gripping part (operation part) for an operator to put his hand from the outside and grip the locking member 186.

  A shaft hole 190a is formed at a position slightly above the rotation fixing piece 190. By inserting a shaft screw 194 through the shaft hole 190a and the shaft hole 184a, the locking member 186 is engaged with the leg piece 180. Is pivotally supported. Further, the side edge 190b on the leg piece 180 side of the rotation fixing piece 190 constitutes a substantially triangular locking piece 190c that protrudes in the direction of the leg piece 180 from the lower end to the height position near the shaft hole 190a. Yes.

  Further, the side edge 190b constitutes a convex portion 190d that extends vertically upward above the acute angle portion of the locking piece 190c and protrudes again toward the leg piece 180 near the upper end. The urging means is a coil spring 196 provided around the shaft portion of the screw 192.

  Next, the shaft support of the locking member 186 to the leg piece 180 will be described. First, the flat plate portion 182 of the leg piece 180 and the rotation base portion 188 of the locking member 186 are arranged to face each other, the rotation fixing piece 190 is overlapped on the outside of the support piece 184, and the shaft screw 194 is inserted into the shaft holes 190a and 184a. The locking member 186 is pivotally supported on the leg piece 180.

  Then, the screw 192 screwed into the screw hole 188d is inserted through the coil spring 196 disposed between the flat plate portion 182 and the rotation base portion 188. As shown on the right side of FIG. 13A, the screw 192 has such a length that the tip is at an intermediate position between the flat plate portion 182 and the rotation base portion 188, and the coil spring 196 is on the lower side of the locking member 186. Is urged in the direction of pressing the lower side of the leg piece 180. Further, by adopting a configuration in which the coil spring 196 is provided around the screw 192 in this manner, the normal coil spring 196 can be used as the biasing means.

  Next, attachment of the bus duct branching device 80 to the housing 66 of the bus duct 60 will be described. As shown in FIG. 14A, the bus duct branching device 80 is moved downward at a position corresponding to the opening 70 provided in the upper surface 66a of the housing 66 in the bus duct 60.

  Then, as it moves downward, as shown in FIG. 14B, the locking piece 190 c (locking portion) that protrudes inward in the width direction of the housing 66 comes into contact with the side surface 66 c of the housing 66. The locking member 186 rotates outwardly against the biasing force of the coil spring 196. Further, when the bus duct branching device 80 is moved downward, the acute angle portion of the locking piece 190c that continues to slide on the side surface 66c of the housing 66 is rotated inward by the urging force of the coil spring 196 when reaching the groove 66d. It moves into the groove 66d of the housing 66, and at the same time, the projection 66g (see the right figure in FIG. 14C) of the housing 66 is held by the locking piece 190c and the projection 190d, and the bus duct branches stably. The device 80 will be attached to the housing 66 of the bus duct 60.

  When removing the bus duct branching device 80, put the hand into the opening 188b (gripping portion) to grip the locking member 186, and lift the bus duct branching device 80 upward while applying the force outward. Thus, the locking by the locking piece 190c is released and the bus duct branching device 80 is quickly removed. At this time, since the locking member 186 rotates outward, the convex portion 190d pushes down the upper surface 66a of the housing 66, so that the bus duct branching device 80 can be easily removed.

  Further, since the above-mentioned locked state is released by putting a hand into the opening 188b (operating unit) serving as a grip provided on the locking member 186 and rotating the locking member 186 outward, the operation unit The configuration of the bus duct branching device 80 is simplified.

  With this configuration, since a space is formed between the rotation base portion 188 of the locking member 186 and the flat plate portion 182 of the leg piece 180, it is easy to put a hand into the grip portion 188b and work. .

  Further, since the coil spring 196 is housed in the locking member 186 and the leg piece 180, the bus duct branching device 80 that is excellent in appearance and appearance can be provided.

  The screw 192 can be made long, and after the bus duct branching device 80 is attached, the screw 192 can be screwed in so as to substantially contact the flat plate portion 182 of the leg piece 180. It is also possible to fulfill.

  Further, at least one end portion of the pair of support pieces 184 provided on the leg piece 180 is bent and extended inward to form a blocking piece, a hole is formed in the blocking piece, and the locking member 186 is further formed. The fastener may be attached at a position corresponding to the hole of the blocking piece of the rotating base 188, and the blocking piece and the rotating base may be fixed and released and blocked by one touch.

(Modification 8)
Moreover, in the bus duct branching apparatus according to the second embodiment, a modification of the locking member and the leg piece pivotally supporting the locking member will be described with reference to FIGS. 15A and 15B are diagrams for explaining the locking member and the leg piece according to this modification, in which FIG. 15A is an exploded plan view of the main part, FIG. 15B is an exploded side view of the main part, and FIG. (C) is an exploded front view of the main part. FIGS. 16A and 16B are views for explaining the locking member and the leg piece according to the modification, in which FIG. 16A is a plan view of the main part, FIG. 16B is a side view of the main part, and FIG. c) is a front view of an essential part. 17A and 17B are views showing the installation of the bus duct branching device 80 according to the present modification to the housing of the bus duct 60. FIG. 17A shows a state before installation, FIG. ) Is a diagram showing a state after mounting.

  As shown in FIGS. 15 to 17, the leg piece 200 has a configuration that approximates the leg piece 180 in the seventh modification. That is, the leg piece 200 is substantially rectangular and has a flat plate portion 202 having a notch portion 202b extending upward from substantially the center of the lower edge 202a, and a widthwise direction at both side edges 202c in the length direction of the flat plate portion 202. And a support piece 204 that is bent outwardly and has a shaft hole 204a in a lower portion for supporting a locking member 206 described later.

  The support piece 204 is formed with a substantially rectangular key hole 204b in a position above the shaft hole 204a through which the tongue piece 222a of the switch-like release prevention means 222 described later can be inserted.

  The locking member 206 has a substantially rectangular rotation base 208 facing the flat plate portion 202 of the leg piece 200 in a normal state and a longitudinal side edge 208a of the rotation base 208 in the leg piece 200 direction. A rotation fixing piece 210 that is bent and disposed outside the support piece 204, and a protrusion 212 that extends further upward from the upper edge 208 b in the height direction of the rotation base 208.

  The rotation base 208 has an elongated rectangular opening 208c extending over the entire width in the width direction of the rotation base slightly above the center, and a position deviated below the opening 208c and on one side in the length direction. And a substantially rectangular opening window 208d, and a screw hole 208f provided in the vicinity of the lower end 208e of the rotation base 208 and into which a screw 214 is screwed.

  The opening 208c constitutes a gripping part (operating part) for an operator to put his hand from the outside and grip the locking member 206. The opening window 208d has a switch-like release prevention means 222 described later. Is inserted.

  As will be described in detail later, the projecting piece 212 abuts on the casing 216 that covers the entire bus duct branching device 80 from the outside when in a predetermined state, and has an action of hindering the attachment of the casing 216 to the bus duct branching device 80.

  A shaft hole 210a is formed at a position slightly below the rotation fixing piece 210. By inserting a shaft screw 218 through the shaft hole 210a and the shaft hole 204a, a locking member is attached to the leg piece 200. 206 is pivotally supported. Further, the side edge 210b on the leg piece 200 side of the rotation fixing piece 210 is a substantially triangular locking piece that protrudes in the direction of the leg piece 200 from the lower end to the height position near the center through the shaft hole 210a. (Locking part) 210c is configured.

  The urging means is a coil spring 220 provided around the shaft portion of the screw 214, and the urging means is attached to one of the two screw holes 208f formed in the rotation base 208. Alternatively, it may be at two locations.

  The switch-like release prevention means 222 includes a main body part 222a which is a substantially rectangular parallelepiped box, a switch operation part 222b which is housed in the main body part 222a and can be moved in the longitudinal direction of the main body part 222a, and a switch operation part And a tongue piece 222c that protrudes outward from one longitudinal end portion of the main body portion 222a in accordance with the movement operation of the longitudinal direction of the main body portion 222a or is housed in the main body portion 222a.

  As shown in FIG. 15C, by moving the switch operating portion 222b of the release prevention means 222 in the right direction (release direction) in the figure, the tongue piece 222c is housed in the main body portion 222a and left in the figure (block). The tongue piece 222c protrudes from one end in the longitudinal direction of the main body 222a to the outside.

  In addition, the structure which moves the switch operation part 222b of the cancellation | release prevention means 222 and the tongue piece 222c maintains the state which moved to the cancellation | release direction, and the structure which moves to the inhibition | blocking direction automatically when it releases a hand, It moved to the inhibition | blocking direction A configuration that automatically moves in the release direction when the hand is released while maintaining the state and a configuration that maintains both the state moved in the release direction and the blocking direction are appropriate. In this modification, it has the structure which maintains the state which moved to the cancellation | release direction and the prevention direction together.

  Next, the shaft support of the locking member 206 to the leg piece 200 will be described. First, the flat plate portion 202 of the leg piece 200 and the rotation base portion 208 of the locking member 206 are arranged to face each other, the rotation fixing piece 210 is overlapped on the outside of the support piece 204, and the shaft screw 218 is placed in the shaft hole 210a and the shaft hole 204a. The locking member 206 is pivotally supported on the leg piece 200 by being inserted.

  Then, the screw 214 screwed into the screw hole 208 f provided in the rotation base 208 is inserted through the coil spring 220 disposed between the flat plate portion 202 and the rotation base 208.

  Further, the release preventing means 222 is fitted into the opening window 208d of the rotation base 208 and fixed. In this fixed state, the tongue piece 222c is moved in the blocking direction by the operation of the switch operation part 222b, protrudes to the outside of the main body part 222a, and enters the key hole 204b of the support piece 204 (see FIG. 16A).乞). Then, as shown in FIGS. 4A and 4B, the movement of the locking member 206 in the directions of the arrows 800 and 900 is locked by the engagement between the key hole 204b and the tongue piece 222c. Therefore, in this state, as shown in the second embodiment, the bus duct branching device 80 cannot be attached to or detached from the housing 66 of the bus duct 60.

  The installation of the bus duct branching device of the bus duct branching device 80 according to this modification having the above configuration will be described with reference to FIG.

  First, as shown in the figure, the switch operating portion 222b of the release preventing means 222 is moved in the release direction so that the tongue piece 222c does not enter the key hole 204b, and the casing 216 is removed from the bus duct branching device 80.

  In this state, as shown in FIG. 17A, by moving the bus duct branching device 80 toward the housing 66 side of the bus duct 60, a locking piece 210c (locking portion) that protrudes inward in the width direction of the housing. However, as shown in FIG. 5B, the locking member 206 contacts the side surface 66c of the housing 60 and rotates outwardly against the urging force of the coil spring 220. When the bus duct branching device 80 is further moved to the bus duct 60 side, the acute angle portion of the locking piece 210c that continues to slide on the side surface 66c of the housing 60 is inward by the urging force of the coil spring 220 when reaching the groove portion 66d. And the bus duct branching device 80 is stably attached to the housing 66 of the bus duct 60.

  Thereafter, the switch operating portion 222b is manually moved in the blocking direction, and the tongue piece 222c is inserted into the key hole 204b, so that the pivotal portion of the locking member 206 with respect to the leg piece 200 cannot be rotated, so that reliable attachment is possible. Complete.

  When removing the bus duct branching device 80, the switch operating part 222b is moved in the release direction, the hand is put in the opening 208c, the locking member 206 is gripped, and the bus duct branching device is applied while applying the force to the outside as it is. By lifting 80 upward, the locking by the locking piece 210c is released and the bus duct branching device 80 is quickly removed.

  Further, the operation of the projecting piece 212 which is one of the features of this modification will be described. Normally, after the bus duct branching device 80 is attached to the housing 66 of the bus duct 60, the bus duct branching device 80 is protected by a casing 216 as shown in FIG. In the present modification, as shown in FIG. 5B, when the bus duct branching device 80 is attached to the housing 66 of the bus duct 60 in an incomplete manner, that is, the locking piece 210c is a groove 66d of the housing 66. When the height does not reach, the protrusion 212 protruding obliquely upward in the height direction and outward in the width direction interferes with the casing 216, and the casing 216 cannot be attached to the bus duct branching device 80.

  Thus, the operator can recognize that the locking piece 210c is not engaged with the groove 66d of the housing 66 and is in an incomplete installation state when the casing 216 is installed. It is possible to prevent the back duct branching device 80 from being detached from the housing 66 of the bus duct 60 due to the above.

  Further, according to the bus duct branching device 80 according to this modification, a space is formed between the rotation base portion 208 of the locking member 206 and the flat plate portion 202 of the leg piece 200. It becomes easy to put in and work.

  In addition, the release prevention work and the release work of the release prevention means 222 are facilitated, and the locking of the bus duct 60 to the housing 66 by the locking piece 210c is reliably performed as described above.

  In this modification, as shown in FIG. 15A, one urging means (coil spring 220) is provided for each leg piece 200, and the protruding piece 212 is provided. It is also possible to take Hereinafter, an example of another configuration will be described as Modification 9. FIG. 18A is a schematic perspective view for explaining a locking member and a leg piece of the bus duct branching device 80 according to the modification 9, and FIG. 18B is a diagram illustrating the bus duct branching device 80 according to the modification 9. It is the schematic perspective view seen from the other direction.

(Modification 9)
As shown in FIG. 18, the bus duct branching device 80 according to the present modification is provided with two coil springs 220 (biasing means) for each leg piece 200 from the bus duct branching device 80 of the modification 8, and the projecting piece 212. And the release preventing means 222 are removed.

  In addition, a positioning hole 208g for positioning in an inverted triangle shape is formed in the center portion in the length direction (arrow x direction in the figure) below the rotation base 208.

  Further, at the substantially central portion in the length direction of the rotation base portion 208, a hook shape having a substantially J-shape in cross section and a base end portion 209a is fixed to a position below the opening portion 208c with a screw or the like. A grounding bar 209 that is curved from 209a to the front end portion 209c while approaching the flat plate portion 202 and a plate-like grounding portion 209b on the front end portion 209c side extends substantially parallel to the flat plate portion 202 is disposed. The ground portion 209b of the ground bar 209 is at a position facing the notch portion 202b.

  When the bus duct branching device 80 configured as described above is attached to the bus duct 60 of the modified example 5, the positioning hole 208g for positioning and the screw 66f attached to the bus duct 60 (see FIG. 3B) are aligned and arranged. Then, by performing the same mounting operation as that of the modified example 5, the ground portion 209b of the ground bar 209 disposed in the notch portion 202b comes into contact with the head of the screw 66f while being elastically deformed.

  According to the bus duct branching device 80 according to the present modified example, an inexpensive device with a simpler configuration is provided, and the locking member 206 pivotally supported on the leg piece 200 of the main body 12 has an opening as in the modified example 8. 208c (gripping part (operation part)), a locking piece (locking part) 210c, and a part (shaft part) supported by the shaft screw 218 are sequentially positioned. Therefore, the distance from the shaft part (fulcrum) to the opening 208 is larger than the distance from the shaft part (fulcrum) to the locking piece 210c, and by the lever principle, the coil spring 220 (biasing means) is used with a smaller force. The opening 208 can be operated against the biasing force.

  Further, by providing the positioning hole 208g for positioning, the bus duct branching device 80 can be arranged at an accurate position and can be attached only by positioning with the screw 66f of the bus duct 60.

  Further, by attaching the bus duct branching device 80 to the bus duct 60, it is possible to automatically ground the screw via the contact between the screw 66f and the ground bar 209, and the safe bus duct branching device 80 can be provided.

10, 80, 170 Bus duct branching device 12, 172 Main body 20, 84, 108, 186, 206 Locking member 48, 90, 114 Operation unit 50, 92 Screw (release prevention means)
98 Screw (Release and locking prevention means)
52 Leaf spring (biasing means)
60, 130 Bus duct 66, 140 Housing 66d, 66e Groove (recess)
91 Cushioning member 94 Operation part cap (release prevention means)
96 Tongue piece (Release and locking prevention means)
96a Screw hole (Release and locking prevention means)
102, 104 Holding part 122 Packing material (biasing means, elastic packing)
188b, 208c Opening (operation part, gripping part)
120, 196, 220 Coil spring (biasing means)
222 Release prevention means

Claims (11)

It has a body portion comprising a branching unit for performing branch conductors from the conductor of the bus duct comprising housed in a housing, the housing locking member supported on the main body portion relative to the outer surface of the housing In the bus duct branching device attached to the bus duct by locking from both sides in the width direction,
Wherein at least one or both of the locking member is rotatably supported to the main body portion, and the axially supported by the locking member, biased in a direction at least the locking portion is pressed against the housing in normal state means Energized by
Have a operation unit for performing an operation for releasing the locking of the axial support has been locking member in a direction against the biasing force by rotation of the biasing means,
The biasing means is interposed between the main body and the locking member,
The operation portion rotates the shaft-supported locking member to release the locking, and the rotation of the operation portion causes the locking member to resist the urging force of the urging means. Bus duct branching device characterized by being separated from the bus duct. The operation part is integral with the locking member,
The bus duct branching device according to claim 1, wherein the operation unit and the urging unit are arranged at positions that are not arranged in the width direction of the housing . 3. The bus duct branching device according to claim 1, wherein the operation portion is located closer to the main body in the arrangement direction of the main body and the housing than the locking portion. The main body has protrusions that protrude so as to be positioned on both sides in the width direction of the housing in the locked state,
The operation part is integral with the locking member,
Journalled to the body portion of the locking member such that said position of the locking portion is a position of the main body closer than in the arrangement direction of the housing and the main body portion than the position which is the pivotally supported The bus duct branching device according to any one of claims 1 to 3, wherein the bus duct branching device is applied to the protruding portion. The operation part is integral with the locking member,
The bus duct branch according to any one of claims 1 to 3, wherein the shaft support of the locking member to the main body is made at a position between the operation portion and the locking portion. apparatus.   6. The device according to claim 1, further comprising a release preventing unit that prevents the locking member from rotating in a direction against a biasing force of the biasing unit in the locked state. Bus duct branching device.   The bus duct branch according to claim 1, further comprising a locking prevention unit that prevents the locking member from rotating in a direction biased by the biasing unit in the unlocked state. apparatus.   The bus duct branching device according to claim 1, wherein a grip portion is provided in the operation portion.   The bus duct branching device according to any one of claims 1 to 8, wherein the biasing means includes an elastic packing, a leaf spring, or a coil spring.   The bus duct branching device according to any one of claims 1 to 9, wherein a cushioning member is attached to a surface of the main body portion facing the housing. In the branch structure of the bus duct formed by attaching the bus duct branching device according to any one of claims 1 to 10 to the bus duct,
A branch structure of a bus duct, wherein the bus duct has a recess into which the locking portion is fitted.

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