JP4940459B2 - Fixing method and fixing device for cable receiver - Google Patents

Description

  TECHNICAL FIELD The present invention relates generally to a fixing method and a fixture for a linear object, and in particular, a method and an instrument for fixing a receiver that forms at least a part of a shelf on which a cable is placed to a wire. About.

  Communication cables laid underground are connected in underground structures called manholes. The connection portion of the communication cable is sealed in a manhole with a non-metallic housing called a closure (hereinafter referred to as “connection portion housing”). In the manhole, the communication cable or the connection housing is arranged and fixed (held) to the inner wall of the manhole so that workers can work.

  Conventionally, as a facility for fixing such a wall surface, a received object is attached to a flat wire fixed to the inner wall surface of a manhole to form a “shelf” that is a communication cable support structure. There is also a fixing method using bolts and nuts to attach the metal fitting to the metal fitting, but in the case of large manholes that require a large number of shelves, from the viewpoint of work efficiency such as shortening the installation time, the following A fixing method is used.

  That is, for example, as disclosed in Patent Document 1, the wire fixed to the inner wall surface of the manhole having the upper insertion hole and the lower fitting hole communicating with the upper insertion hole was loosely inserted into the insertion hole. A cable bracket that has a protrusion that is later moved into the fitting hole and is fitted into the fitting hole is fixed to the wire by the fitted protrusion. As a result, it is possible to attach the received object to the wire with a simple operation of inserting and fitting the received object into the wire, and then connect the communication cable to the received object or connect it to the base based on the received object. A shelf on which the partial housing is placed can be formed.

However, rainwater or the like may be accumulated in the manhole, and the connection housing may be immersed in the accumulated water.
In such a case, a force acts in the upward direction on the received object due to buoyancy. Here, the metal receiving object does not come off the wire basically even when a force in the horizontal direction is applied, but it is easy to come off when an upward force such as a buoyancy acting on the connection portion housing is applied. Accordingly, if a force in the horizontal direction is applied to the connecting portion housing in a state where buoyancy is applied to the connecting portion housing, the received object may come off the wire. If the metal support that supports the connection unit case is detached from the wire, the connection unit case tends to move to the upper surface of the accumulated water due to the buoyancy acting on the connection unit case, which adversely affects the communication cable and the connection unit case. There is a risk of affecting. For example, the communication cable is deformed by bending the communication cable in the vicinity of the outlet portion of the pipeline so that the transmission loss is increased, or when the communication cable is an optical cable, the transmission loss increases due to the bending beyond the allowable curvature. There is also a risk of transmission degradation. In addition, the communication cable is drawn into the cylindrical housing through a rubber bush called an entry plate, so if bending stress acts on the communication cable, a gap is created between the rubber bush and the communication cable, and the inside of the closure There is also a risk of flooding. Further, since the water level of the stored water also fluctuates, it is assumed that the bending stress is repeatedly applied, and there is a possibility that the equipment failure is accelerated.

  Patent Document 1 discloses a fixture for fixing a cable receiver that solves such a problem. The jig includes a protrusion that engages with the fitting hole of a flat metal plate having a hook-shaped fitting hole, and the cable is in a state where the protrusion is fitted into the hook-shaped fitting hole. It is a jig | tool for fixing the metal receiving object which forms the shelf which mounts to the said metal fitting. The bottom surface of the jig has an engagement piece that can be fitted and slid on the metal fitting, and the surface of the jig on the back surface of the jig that is in contact with the metal hardware. A projection piece for closing a gap formed in a state in which the projection portion of the received article is fitted in the fitting hole of the shape is provided. Thereby, it is possible to prevent the metal receiving object supporting the cable from being detached from the metal fitting, and to prevent an adverse effect on the cable or the like due to the metal receiving object being detached from the metal fitting.

  However, in order to install the jig, it is necessary to fit the jig and the metal fitting and then slide the jig toward the wire. When the worker directly engages the jig and the received object manually, a relatively delicate work is required of the worker. In addition, even when the jig is installed on the wire from a state where the jig is fitted with the metal fitting in advance, the jig must be inserted in the gap in the wire after sliding along the longitudinal direction of the metal receiving piece. In other words, it is difficult to say that such insertion work is generally easy in situations where there are considerable restrictions on the work space and work posture.

  In addition, there are some problems in the insertion of the protruding piece of the jig and the fitting hole of the wire in the prior art. In other words, if the protruding piece is not properly aligned with the shape of the fitting hole, the protruding piece will not fit into the fitting hole, or if the protruding piece easily enters the fitting hole, it will be accepted. The tightening of the hardware against the hardware is poor. In other words, the conventional technique disclosed in Patent Document 1 or the like simply closes the protrusion piece in the space of the fitting hole that is formed immediately after the metal fitting is attached to the metal fitting. Can be said to be lacking.

  Furthermore, in the prior art disclosed in Patent Document 1, it takes time to remove the received material from the wire for installing or rearranging the cables. That is, the worker must remove the fitted jig correctly by sliding along the longitudinal direction of the received object with a considerable mechanical force. Alternatively, since the jig is made of polyethylene, it is sufficient to destroy the jig itself for re-installation of the cable. However, this is wasteful, and the jig material pieces are scattered inside the manhole after the destruction. New problems can also arise.

In addition, although there is a side surface that facilitates the shape matching with the sliding part of the metal receiving object and / or the fitting hole of the metal bar by such a polyethylene molding tool, Such shape matching itself is disadvantageous in terms of cost and low versatility. That is, since the jig is formed into a shape that matches the shape of the metal fitting and the metal fitting, it must be manufactured for each set of the metal reception piece and the metal fitting, and to be compatible with both the metal fitting and the metal fitting. The cost from design to production is high. In addition, since the received metal and the metal fitting to which the formed jig can be applied are determined, there is almost no adaptability to the metal received and the metal metal of other sizes and shapes.
JP-A-9-42235

  The present invention has been made in view of the above-described problems, and the object of the present invention is to easily attach and / or remove the wire receiving object while keeping the low cost and high adaptability. It is intended to provide a method and fixture for fixing a cable receiver that can be fixed to a cable.

  In order to achieve the above-described object, the specific aspect of the present invention includes an insertion hole and a fitting that is in communication with the insertion hole and fixed to a predetermined wall surface, after being loosely inserted into the insertion hole. A cable receiver that is moved into a fitting hole and has a protruding part that fits into the fitting hole is fixed to the wire by the fitted protrusion. Then, in a state where the cable receiver is fixed to the metal fitting, the distal end portion of the fixing device is loosely inserted into the insertion hole, and thereafter, at least two of the distal end portion and the wall portion of the insertion hole are inserted. A mechanical force is gradually increased and applied to the fixing device so that the two come into close contact with each other at the contact position, and the fixing device is fastened to the wire, thereby preventing the cable bracket from falling off the wire.

  According to this aspect, it is possible to easily fix the received metal to the wire while maintaining the low cost and the high adaptability, and the attachment work is easy.

  According to an embodiment of the present invention, an insertion hole and a metal fitting that has a fitting hole communicating with the insertion hole and is fixed to a predetermined wall surface are loosely inserted into the insertion hole and then moved into the fitting hole. A cable receiver having a protruding portion that is fitted into the fitting hole and is fixed to the wire by the fitted protruding portion. In a state where the hardware is fixed to the metal fitting, the distal end portion of the fixing device is loosely inserted into the insertion hole, and thereafter, at both of the contact positions of the distal end portion and the wall portion of the insertion hole, It is a method of preventing the cable bracket from falling off the metal fitting by applying a mechanical force to the fixture to be brought into close contact with each other and fastening the fixture to the metal fitting. 1).

  According to this method, the fixing device is basically inserted directly into the insertion hole of the wire regardless of the received object, and is fastened to the insertion hole wall portion with an appropriate adhesion force after the insertion. It is easy and can secure the received object to the wire. In addition, the fixing device can be formed basically without the need for matching with the shape of the received material, and can be adapted to various shapes and dimensions of the insertion hole, so that it is low cost and highly adaptable. Can be maintained.

  In this embodiment, it is possible to remove the fixing device from the wire by gradually reducing the mechanical force applied to the fixing device to release the contact, and extracting the distal end portion of the fixing device from the insertion hole. (Claim 2). Thereby, even when installation or re-arrangement of the cable occurs and re-installation of the received item occurs, it is convenient that the fixing device can be easily re-installed.

  Further, the fixing device may have a contact groove for the contact position, and the contact groove may be positioned with respect to the wall portion of the insertion hole (Claim 3). Additionally or alternatively, the fixing device has an entry restriction groove for defining an entry limit of the tip portion into the insertion hole, and positioning in the entry direction with respect to the insertion hole is performed by the entry restriction groove. You may make it make (Claim 4). This further facilitates the attaching operation of the fixing device.

  According to another embodiment of the present invention, an insertion hole and a metal fitting having a fitting hole communicating with the insertion hole and fixed to a predetermined wall surface are loosely inserted into the insertion hole and then inserted into the fitting hole. A fixing device used for a method of fixing a cable bracket, wherein a cable bracket having a protrusion that is moved and is fitted into the fitting hole is fixed to the wire by the fitted protrusion. And at least two of the tip portion loosely inserted into the insertion hole and penetrated in the state where the cable bracket is fixed to the wire, and the tip portion and the wall portion of the insertion hole after the penetration. And a second end portion provided with a mechanical force application mechanism for applying a mechanical force to the fixing device so that both are brought into close contact with each other at the abutting position, and the fixing device based on the application of the mechanical force of the mechanism By fastening the wire to the hardware, A retainer which is adapted to prevent the serial cable hangers material from falling from the muscle hardware (claim 5).

  According to this fixing device, the fixing device is basically inserted directly into the insertion hole of the metal fitting, and is fastened to the insertion hole wall portion with an adjustable adhesion force after insertion, so that the installation work is easy and reliable. The received object can be fixed to the wire. In addition, the fixing device can be basically formed regardless of the shape of the received article, and can be adapted to various shapes and dimensions of the insertion hole, so that it is low cost and highly adaptable.

  In this embodiment, the mechanical force application mechanism can gradually reduce the mechanical force applied to the fixing device to release the adhesion, and by extracting the distal end portion of the fixing device from the insertion hole, It can be removed from the wire (Claim 6). Thereby, even when the re-installation of the received item occurs, the fixing device can be easily reattached.

  Further, it preferably has a contact groove for the contact position, and the contact groove should position the insertion hole with respect to the wall portion (Claim 7), more preferably the tip portion. An entry restriction groove for defining an entry limit to the insertion hole may be provided, and positioning in the entry direction with respect to the insertion hole may be performed by the entry restriction groove. Thereby, the further easy attachment work of a fixing device is achieved.

  In this embodiment, there is a main body portion that has a pair of open ends that are connected to each other at one end and have a pair of open ends whose main surfaces face each other at the other end and that has a U-shaped or horizontal U-shaped cross section as a whole. One end and the other end of the main body portion are used as the tip portion, and the mechanical force application mechanism has a movable configuration capable of enlarging and reducing the relative distance of the opposing piece at the other end of the one end and the other end. You may make it have (Claim 9). This makes it possible to realize the functions of the main body and the mechanical force application mechanism that works in conjunction with the main body relatively easily.

  As an example that can be manufactured very easily, the mechanical force application mechanism may be configured based on a screw structure (claim 10).

  As a preferred example, in the case where the opposing piece is involved, the mechanical force application mechanism includes a nut structure formed on one of the opposing pieces, and a head that is screwed into the nut structure and the head is moved by the progress of screw motion. You may make it have a bolt member which contacts the other main surface of the said opposing piece, and presses the said other (Claim 11). Here, when the bolt member is a butterfly bolt or other bolt with a handle (claim 12), it is possible to perform a screwing operation without requiring a separately prepared tool such as a screwdriver.

  When the main body is accompanied, the main body may be formed of stainless steel or other metal material by integral molding or a joining technique (claim 13). Thereby, a fixing device can be easily manufactured with a relatively inexpensive material.

  In the embodiment, it is preferable that the tip end portion has a tapered shape (claim 14). Thereby, it becomes easy to insert the tip portion into the insertion hole.

  Hereinafter, the above aspect and embodiment of the present invention will be described in detail based on examples with reference to the accompanying drawings.

Example 1
FIG. 1 shows a schematic appearance of an assembled form of a metal receiving member and a metal fitting and a cable mounting form using the same according to one embodiment of the present invention.

  The longitudinal wire 10 has attachment holes 11 at a predetermined interval in the longitudinal direction, and the longitudinal direction is perpendicular to a predetermined wall portion in a manhole by using a bolt (not shown) using the attachment holes 11. To be fixed. In addition, the metal fitting 10 has a metal receiving object installation hole 12 for attaching the cable metal receiving object 20 between the attachment holes 11, and the metal fitting is horizontally installed using the installation hole 12 at the same height position. .

  The installation hole 12 is generally generally bowl-shaped, and in this example, a relatively large circular insertion hole 13 is provided in the upper part thereof, and a relatively small rectangular fitting hole 14 communicating therewith is provided in the lower part thereof.

  A cable receiver 20 is attached to the installation hole 12. Details of this attachment mode are not shown in FIG. 1 and will be described later. The cable bracket 20 has one end portion that contacts the wire 10, and is attached to the surface of the wire 10 at a right angle as a whole. The cable receiver 20 has a cable placement surface 21 that presents a substantially horizontal plane when attached to the wire 10. In this example, communication cables 30 and 31 such as optical fiber cables are placed on the cable placement surface 21, and the cables 30 and 31 are bound to the cable receiver 20 by a so-called cable tie (not shown) made of resin, for example. Fixed.

  Unlike the cable 30, there is a case where the connection portion housing 32 is interposed between the cables as in the case of the cable 31. In this case, the connection portion housing 32 is disposed between the adjacent one of the cable receiving objects 20 and the other. The form where is arranged. At this time, the connection portion housing 32 is supported by the cable receiver 20 via the cables 31 at both ends thereof.

  The connection portion housing 32 includes a connection portion between the cables and the like, and the outer shell is formed of a synthetic resin such as plastic, and basically seals the connection portion, as described above. We have the problem of inundation due to accumulated water in the manhole. In this example, the cables 30 and 31 are shown fixed to the receiving object 20, but the base is configured by a member separately prepared based on the receiving object 20, and the cable and the connection housing are placed on the base. It may be fixed. The cables 30 and 31 are drawn into the inside of the connection portion housing 32 through drawing holes (not shown) of rubber entry plates 33 attached to both end faces of the connection portion housing 32.

  FIG. 2 shows details of the installation hole 12 and the metal receiving member 20 of the wire 10.

  The metal receiving piece 20 has a protruding portion 22 that protrudes perpendicularly to the main surface of the wire fitting 10 on the side facing the wire fitting 10. The protruding portion 22 extends from the end surface from the metal receiving piece 20 with a length at least equal to the thickness of the metal fitting 10 (preferably a length slightly larger than the thickness of the metal fitting 10), and the shaft body 23. The head 24 is formed at the tip and has a width wider than that of the shaft body.

  The head 24 has a substantially cylindrical shape similar to the insertion hole 24 of the metal fitting 10, and is smaller than the circular space of the insertion hole 13 so that it can be loosely inserted into the insertion hole 13 of the metal fitting 10. It has a vertical cross section that has a circular shape with a radius larger than the width of the fitting hole 14 so that the received article 20 does not come off the fitting hole 14. The shaft body 23 has a substantially cylindrical shape in this example, and can be loosely inserted into the insertion hole 13 of the metal fitting 10 and can move in the space of the fitting hole 14 of the metal fitting 10 from the width of the fitting hole 14. Also has a vertical cross section with a slightly smaller radius circle.

  The metal receiving object 20 having such a protrusion 22 is made to face the metal object 10 so that the head 24 of the protrusion 22 is first inserted into the insertion hole 13 of the metal object 10 and the main body of the metal object 20. Is inserted until it hits the wire 10. FIGS. 3A and 3B show the state when the wire 10 is viewed from the directions of arrows A and B (see FIG. 2), respectively.

  Next, the received article 20 is moved downward from this state, and the shaft body 23 is dropped into the fitting hole 14. FIGS. 4A and 4B show the state when the wire 10 is viewed from the directions of arrows A and B (see FIG. 2), respectively.

  The protrusion 22 is fitted in the fitting hole 14 of the metal fitting 10, and the movement of the metal receiving object 20 in the horizontal direction is restricted by the head 24 overlapping the wall portion of the fitting hole 14, and the metal fitting 10 The money receiving object 20 is fixed to. 3 and 4 show the shapes of the insertion hole 13 and the fitting hole 14, the shapes of the shaft body 23 and the head 24, and the relationship between the metal fitting 10 and the metal receiving piece 20 for visual clarity. It should be noted that this is shown schematically and not drawn to scale.

  In the present embodiment, a fixing device is further used to limit the movement of the metal receiving member 20 in the vertical direction under the temporary fixing state of the metal fitting 10 and the metal receiving member 20.

  FIG. 5 shows the appearance of the fixing device 50 according to the present embodiment.

  The fixture 50 includes a tip 51 that is loosely inserted into the insertion hole 13 and penetrated through the insertion hole 13 in a state where the metal receiving piece 20 is fixed to the wire 10 as described above, and an other end 52 opposite to the tip 51. The other end portion 52 gradually increases the mechanical force to the fixing device 50 so that the tip end portion 51 and the wall portion of the insertion hole 13 come into close contact with each other after the tip portion 51 penetrates the insertion hole 13. A mechanical force application mechanism 53 is provided for application. Then, based on the mechanical force application by the mechanical force application mechanism 53, the fixing device 50 is fastened to the metal fitting 10, thereby restricting the vertical movement of the metal receiving article 20 with respect to the metal fitting 10, so that the metal receiving article 20 is a metal fitting. 10 is prevented from falling off.

  The fixing device 50 has a main body portion 54, and the main body portion 54 has opposed pieces 55 and 56 that are connected to each other at one end and have a pair of open ends whose main surfaces are opposed to each other at the other end. As a whole, it has a U-shaped or horizontal U-shaped cross section. One of the one end and the other end of the main body 54 (the connecting portion 510 in this example) serves as the tip 51 to be inserted into the opening of the wire 10.

  Here, the mechanical force application mechanism 53 has a movable configuration capable of enlarging and reducing the relative distance between the opposing pieces 55 and 56 at the other end (the open end side portion in this example) of the one end and the other end. Yes. Therefore, the mechanical force application mechanism 53 is configured based on a screw structure, and includes a nut structure portion 55n formed on one of the facing pieces 55 and 56 (the facing piece 55 in this example), and the nut structure portion 55n. And a bolt member 5B that pushes the head 5h against the main surface of the other facing piece 56 so as to spread the facing piece 56 outward. A bolt with a handle, specifically, a butterfly bolt is adopted as the bolt member 5B. With this butterfly bolt, an operator can perform a screwing operation with one hand even in a situation that is unfavorable to the work space and / or the posture, without requiring a separately prepared tool such as a screwdriver or a spanner. With the configuration of the main body 54 and the mechanical force application mechanism 53 as in this example, it is relatively easy to realize the linkage action (function) of both.

  The U-shaped cross-section main body 54 is preferably formed of stainless steel or other metal material by integral molding together with rust prevention treatment if possible. May be formed by bonding. In either case, the fixing device can be easily manufactured using a relatively inexpensive material. In addition, by forming the main body portion 54 from a metal material, unlike a material such as a synthetic resin, it is not broken brittlely even if an impact force is applied, and the broken pieces are not scattered in the manhole. There are also advantages.

  FIG. 6 shows a state when such a fixing device 50 is attached to the metal fitting 10 to which the metal receiving piece 20 is attached. (A), (b), and (c) are arrows A in FIG. The figure which looked at these members from the direction of, B, C is shown. However, for the sake of brevity, it should be noted that members and parts of members are omitted as appropriate, and are drawn at a different scale from the actual one. The figure shows a state in which the distal end portion 51 of the fixing device 50 is inserted partway into the insertion hole 13 of the wire 10.

  The distal end of the fixing device 50 to be inserted has an outer shape slightly smaller than the space that fits in the space of the insertion hole 13 so that it can be inserted into the insertion hole 13. The worker inserts the fixing device 50 from the tip 51 thereof. This insertion is performed together with the position adjustment of the fixing device 50 in the insertion direction so that the groove 5g is positioned in the insertion hole 13 with the groove 5g provided in the main body 54 of the fixing device 50 as a guide.

  In this example, the groove 5g is defined in each of the upper and lower facing portions 55 and 56 of the main body portion 54 as shown in FIG. Two locations are provided near the base of the tip. By this groove 5g, when the fixing device 50 is inserted into the wire 10, the positioning of the insertion hole 13 with respect to the wall portion is performed, and the subsequent work can be facilitated.

  In FIG. 7, after the fixing device 50 is inserted into the metal fitting 10 in this way, this time, the fastening of the fixing device 50 to the metal fitting 10 is performed using the mechanical force application mechanism 53 (5B, 55n). , Showing this. Here, (a) and (b) show views of the respective members viewed from the directions of arrows A and B in FIG.

  The butterfly bolt 53 is screwed by an operator, the head 5h of the butterfly bolt 53 hits the opposing piece 56, and further advances the screw movement, whereby the mechanical force is gradually increased and applied to the opposing pieces 55 and 56. The relative distance between the facing piece 55 and the facing piece 56 increases. At this time, the groove 5g is in contact with the wall portion of the insertion hole 13 and is substantially guided along the imaginary straight line connecting the upper and lower grooves 5g. Will be pulled up and down. Thereby, the opposing pieces 55 and 56 are brought into close contact with the wall portion of the insertion hole 13, and the fastening of the fixing device 50 to the wire 10 is achieved.

  On the other hand, when removing the fixing device 50 from the state of FIG. 7, the butterfly bolt 53 is screwed in the opposite direction. Thereby, the mechanical force applied to the fixing device 50 can be gradually reduced to release the contact. Then, the fixing device 50 can be removed from the wire 10 by extracting the distal end portion 51 of the fixing device 50 from the insertion hole 13. Therefore, even when the need for re-installation of the received item 20 arises, the fixing device 50 can be easily reattached. Further, the point that the degree of adhesion can be appropriately adjusted by the mechanical force application mechanism 53 has an effect of improving adaptability to various uses.

(Example 2)
FIG. 8 shows the appearance of a fixation device 50 ′ according to another embodiment of the present invention, in which the same reference numerals are used for the same elements as in FIG. 5 and the corresponding or equivalent components are the same as in FIG. Reference signs including reference signs are used.

  The fixing device 50 ′ has a distal end portion 51 ′ that is loosely inserted into the insertion hole 13 and allows the other end portion 52 ′ on the opposite side to be inserted through the insertion hole 13 in a state where the metal receiving object 20 is fixed to the metal fitting 10. The other end 51 ′ is attached to the fixing device 50 ′ so that the tip 51 ′ and the wall of the insertion hole 13 come into close contact with each other after the penetration of the tip 51 ′ into the insertion hole 13. A mechanical force application mechanism 53 is provided for gradually increasing the mechanical force. Then, based on the mechanical force application by the mechanical force application mechanism 53, the fixing device 50 ′ is fastened to the metal fitting 10, thereby restricting the vertical movement of the metal receiving article 20 with respect to the metal fitting 10. It is made to prevent falling off from the hardware 10.

  The fixing device 50 ′ has a main body 54 ′, which again is a pair of opposed pieces that are connected to each other at one end and have a pair of open ends whose main surfaces are opposed to each other at the other end. 55 ', 56' and has a U-shaped or horizontal U-shaped cross section as a whole. One of the one end and the other end of the main body portion 54 ′ (in this example, the open end side portions 511 and 512) is the tip portion 51 to be inserted into the opening of the wire 10.

  Here, the mechanical force application mechanism 53 has a movable configuration capable of enlarging and reducing the relative distance between the opposing pieces 55 ′ and 56 ′ on the other end side (the connecting portion 520 in this example) of the one end and the other end. I have to. The configuration of the mechanical force application mechanism 53 itself, the formation method of the main body 54 ', and the like are the same as in the above-described embodiment.

  As shown in FIG. 8, the connecting portion 520 has a width smaller than the width of the facing pieces 55 ′ and 56 ′, thereby applying a mechanical force to the facing pieces using the mechanical force application mechanism 53. This is preferable because it reduces labor.

  Unlike the above-described embodiment, the tip of the facing piece 55 'is formed so as to exhibit a generally tapered shape as a whole. Thereby, it becomes easy to insert the said front-end | tip part in the insertion hole 13, and becomes convenient. As an alternative to the groove 5g, a first groove 5g1 is provided in the opposing piece 56 ', and a second groove 5g2 is provided in the opposing piece 55'. The first groove 5g1 serves as an entry restriction groove for defining the entry limit of the distal end portion into the insertion hole 13. This entry restriction groove ensures positioning in the entry direction with respect to the insertion hole 13 and facilitates the attaching operation of the fixing device 50 '. The second groove 5g2 has both the function of the entry restricting groove and the function of positioning the abutting position between the tip portion like the groove 5g and the wall portion of the insertion hole 13 and guiding the abutting direction. Bear.

  FIG. 9 shows a state in which such a fixing device 50 ′ is attached to the metal fitting 10 to which the metal receiving piece 20 is attached. (A), (b), and (c) are arrows in FIG. The figure which looked at these members from the direction of A, B, C is shown. Again, for the sake of simplicity, members and parts of the members are omitted as appropriate, and are drawn at a different scale from the actual one.

  A situation is shown in which the distal end portion 51 ′ of the fixing device 50 ′ is partially inserted into the insertion hole 13 of the wire 10. The distal end portion of the fixing device 50 ′ has an outer shape that is slightly smaller than the space that fits in the space of the insertion hole 13 so that it can be inserted into the insertion hole 13. The operator inserts the fixing device 50 'through the tip 51'. The movement of the fixing device 50 ′ by this insertion is possible until the wall portion of the insertion hole 13 abuts against the wall surface of the groove 5g1 or the groove 5g2 provided in the main body portion 54 ′ of the fixing device 50 ′. The movement is stopped when the wall of the insertion hole 13 hits the wall surface of the groove 5g1 or 5g2. Therefore, the operator confirms that the insertion of the fixing device 50 ′ has been achieved with this tactile sensation, and understands that no further movement of the fixing device is required.

  Thereafter, the fastening device 50 'is fastened to the wire 10 using the mechanical force application mechanism 53 (5B, 55n). The butterfly bolt 53 is screwed by an operator, the head 5h of the butterfly bolt 53 hits the opposing piece 56 ', and further advances the screw movement, whereby the mechanical force is gradually increased to the opposing pieces 55' and 56 '. As a result, the relative distance between the facing piece 55 ′ and the facing piece 56 ′ increases. At this time, the worker does not loosen the insertion of the fixing device 50 ′ into the insertion hole 13, the groove 5 g 1 is in contact with the wall portion of the insertion hole 13, and 5 g 2 is fitted with the wall portion of the insertion hole 13. The opposing pieces 55 ′ and 56 ′ are pulled up and down while being guided by the groove 5g2 under the positioning by the grooves 5g1 and 5g2. As a result, the opposing pieces 55 ′ and 56 ′ are brought into close contact with the wall portion of the insertion hole 13, and firm fastening of the fixing device 50 ′ to the wire 10 is achieved.

  When the fixing device 50 ′ is removed from the fastened state, the butterfly bolt 53 is screwed in the opposite direction as in the above-described embodiment.

  The fixing device 50 ′ according to the present embodiment has the distal end portion to be inserted as an open end side, and when the insertion piece 13 is inserted into the insertion hole 13, the opposing distances 55 ′ and 56 ′ can be narrowed by hand to narrow the relative distance between them. Since it is possible, the outer shape of the tip portion can be temporarily made considerably smaller than the space of the insertion hole 13, and there is an advantage that the operation of inserting into the insertion hole 13 is easy.

  In each of the above embodiments, the mechanical force application mechanism is configured based on the butterfly bolt 53. Therefore, the nut pieces 55n screwed to the butterfly bolt 53 are formed on the opposing pieces 55 and 55 ′. As can be inferred from FIG. 6B and FIG. 9B, the number of parts can be suppressed from increasing by forming the nut portion 55n by burring which is threaded into a “flash”.

  According to the above-described fixing devices 50 and 50 'in FIGS. 5 and 8, the fixing device is basically inserted directly into the insertion hole 13 of the wire 10 and the insertion hole wall can be adjusted with an adhesive force that can be adjusted after the insertion. Fastened to the part. Accordingly, the attachment work is easy and the metal receiving object 20 can be securely fixed to the wire hardware 10. In addition, the fixing devices 50 and 50 'can be formed basically regardless of the shape of the metal receiving member 20, and can be adapted to various shapes and dimensions of the insertion hole 13, so that they are low cost and highly adaptable. It becomes.

  In the above embodiment, the number of grooves provided in the fixing devices 50, 50 ′ is four. However, the number of grooves is not limited to this, and may be at least two or may have five or more grooves. It may be. Of course, the shape of the groove can be appropriately modified according to the application. In addition, it goes without saying that those skilled in the art can appropriately modify the entire and detailed shape of the fixing device and the specific implementation form of the mechanical force application mechanism.

  As mentioned above, although the typical Example by this invention and the modification based on this were demonstrated, this invention is not necessarily limited to these, Those skilled in the art do not deviate from the scope of the attached claim. Various alternative embodiments and modifications can be found.

It is a perspective view which shows the general | schematic external appearance of the assembly form of a metal receiving object and a metal fitting by the Example of this invention, and a cable mounting form using the same. It is a perspective view which shows the metal fitting used in the Example of this invention, and a metal receiving object. It is a figure which shows the 1st step of the installation aspect of the wire used in the Example of this invention, and a metal receiving object. It is a figure which shows the 2nd step of the installation aspect of the metal fitting used in the Example of this invention, and a metal receiving object. It is a schematic perspective view which shows the fixing device by the Example of this invention. It is a figure which shows the 1st step of the attachment aspect to the metal fitting of the fixing device by the Example of this invention. It is a figure which shows the 2nd step of the attachment aspect to the metal fitting of the fixing device by the Example of this invention. It is a schematic perspective view which shows the fixing device by the other Example of this invention. It is a figure which shows the attachment aspect to the metal fitting of the fixing device shown by FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Brace 11 Attachment hole 12 Installation hole 13 Insertion hole 14 Fitting hole 20 Metal object 21 Placement surface 22 Projection part 23 Shaft body 24 Head part 30,31 Cable 32 Connection part housing | casing 50 Fixing tool 51 Tip part 52 Other end Part 53 mechanical force application mechanism 5B butterfly bolt 55n nut structure part 54 body part 55, 56 facing piece 5g groove 510 connecting part 50 'fixing device 51' tip part 52 'other end part 54' body part 55 ', 56' facing piece 5g1, 5g2 Grooves 511, 512 Open end side portion 520 Connecting portion

Claims (14)

An insertion hole and a metal fitting having a fitting hole communicating with the insertion hole and fixed to a predetermined wall surface are loosely inserted into the insertion hole and then moved into the fitting hole to be fitted into the fitting hole. A cable receiver having a protruding part that is fixed to the wire by the fitted protrusion,
In a state where the cable bracket is fixed to the metal fitting, the distal end portion of the fixing device is loosely inserted into the insertion hole and penetrated,
Thereafter, a mechanical force is gradually increased and applied to the fixing device so that they are in close contact with each other at at least two contact positions between the tip portion and the wall portion of the insertion hole,
A method of preventing the cable bracket from falling off the wire by fastening the fixing device to the wire.   The mechanical force applied to the fixing device is gradually reduced to release the contact, and the fixing device is removed from the wire by pulling out a distal end portion of the fixing device from the insertion hole. The method according to 1.   The method according to claim 1, wherein the fixing device has a contact groove for the contact position, and the contact groove positions the wall portion of the insertion hole.   The fixing device includes an entry restriction groove for defining an entry limit of the distal end portion into the insertion hole, and positioning with respect to the insertion hole in the entry direction is performed by the entry restriction groove. Item 2. The method according to Item 1. An insertion hole and a metal fitting having a fitting hole communicating with the insertion hole and fixed to a predetermined wall surface are loosely inserted into the insertion hole and then moved into the fitting hole to be fitted into the fitting hole. A cable fixture having a projecting portion to be fixed to the wire fitting by the fitted projecting portion, and a fixing device used for a method of fixing a cable receiver,
In a state where the cable bracket is fixed to the metal fitting, a tip portion that is loosely inserted into the insertion hole and penetrated,
Other than that, a mechanical force application mechanism for gradually increasing the mechanical force to be applied to the fixing device so as to be in close contact with each other at at least two contact positions between the distal end portion and the wall portion of the insertion hole is provided. An end, and
The fixing device according to claim 1, wherein the fixing device is fastened to the wire based on application of mechanical force of the mechanism to prevent the cable receiving material from falling off the wire.   The mechanical force application mechanism allows the mechanical force applied to the fixing device to be gradually reduced to release the adhesion, and the distal end portion of the fixing device is removed from the wire by being extracted from the insertion hole. The fixing device according to claim 5, wherein   The fixing device according to claim 5, further comprising a contact groove for the contact position, wherein the contact groove positions the wall portion of the insertion hole.   6. The fixing according to claim 5, further comprising an entry restriction groove for defining an entry limit of the distal end portion into the insertion hole, wherein the entry restriction groove is used to position the insertion hole in the entry direction. Instruments.   The main body portion has a main body portion that is connected to each other at one end and has a pair of opposed pieces that exhibit a pair of open ends whose main surfaces face each other at the other end, and has a U-shaped or horizontal U-shaped cross section as a whole. One of the one end and the other end is used as the tip portion, and the mechanical force application mechanism has a movable configuration capable of enlarging and reducing the relative distance of the facing piece at the other end of the one end and the other end. The fixing device according to claim 5.   The fixing device according to claim 5, wherein the mechanical force application mechanism is configured based on a screw structure.   The mechanical force application mechanism includes a nut structure portion formed on one side of the opposing piece, and a head that abuts the other main surface of the opposing piece by screwing into the nut structure portion and progressing a screw motion. The fixing device according to claim 9, further comprising a bolt member that presses the bolt.   The fixing device according to claim 11, wherein the bolt member is a butterfly bolt or other bolt with a handle.   The fixing device according to claim 9, wherein the main body is formed of stainless steel or other metal material by integral molding or a joining technique. The fixing device according to claim 5, wherein the tip has a tapered shape.