JP5512297B2 - Cable clamp - Google Patents

Description

  The present invention relates to a cable clamp mainly used in a vehicle, and more particularly to a cable clamp that holds an outer periphery of a corrugated tube or the like through which a wire harness is inserted and is attached to a bracket at a cable wiring location in that state.

For this type of cable clamp, for example, the technique disclosed in Patent Document 1 is already known. In this technique, one end of the clamp body and the lid are connected by a hinge, a lock socket is provided at the other end of the clamp body, and a lock insertion portion is provided at the other end of the lid. Is provided. The interior of the lock socket is divided into a first space in which a lock insertion portion of the lid can be inserted, and a second space in which a bracket protruding from a cable wiring location (vehicle body) can be inserted. The first space is provided with a locking piece that locks with the locking insertion portion by inserting the locking insertion portion from above the locking socket. The second space is provided with a locking piece that locks with the bracket by inserting the bracket from below the locking socket.
When wiring a cable such as a wire harness to the vehicle body, the outer periphery of the corrugated tube or the like through which the cable is inserted is gripped by the semicircular inner peripheral surface of the clamp body and the lid body, and the lid insertion portion for locking Is inserted into the first space of the locking socket and locked. In this state, the clamp is attached to the cable wiring portion by inserting and locking the bracket of the cable wiring portion into the second space of the locking socket.

JP 2007-143309 A

  In the technique disclosed in Patent Document 1, the lock piece of the first space is configured by a part of the partition that divides the inside of the lock socket into the first space and the second space. And this lock piece is bent to the 2nd space side by inserting the insertion part for a lock of a lid with respect to the 1st space. For this reason, the distance between the first space and the second space must be set in consideration of the amount of bending of the lock piece in the first space. In particular, the guide wall for guiding the bracket to the second space has both spaces. When provided in the boundary portion, the second space is greatly separated from the clamp body. As a result, the dimension (offset amount) between the cable shaft held by the clamp body and the lid and the bracket becomes large.

  An object of the present invention is to solve such a problem, and an object of the present invention is to provide a guide wall for guiding a bracket provided at a cable wiring location to the second space of the socket for locking at the boundary between the two spaces. Even in this type, the dimension between the cable shaft held by the clamp body and the lid and the bracket is reduced.

The present invention is for achieving the above object, and is configured as follows.
Phase One end of each other provided with and the linked clamp body and the lid at the hinge to lock the other ends of the cross while gripping the outer periphery of the cable by the inner peripheral surfaces of the semicircular annular, its state The cable clamp is attached to the bracket at the cable wiring location, and a lock socket is provided at the other end of the clamp body, and a lock insertion part is provided at the other end of the lid.
The interior of the lock socket is divided into a first space in which a lock insertion portion of the lid can be inserted and a second space in which a bracket at the cable wiring portion can be inserted. A guide wall for guiding the insertion of the bracket to the second space is provided at the boundary between the first space and the second space. Both spaces are provided with locking pieces for locking the locking insertion portions and the brackets at the respective insertion positions. The lock piece of the first space is provided on the wall on the side of the lock socket that is continuous with the inner peripheral surface of the clamp body, and is bent in the opposite direction to the second space by inserting the lock insertion portion into the first space. Is set.
Furthermore, the locking piece in the first space has an engaging claw that engages with the locking insertion portion of the lid, and the locking insertion portion when receiving a load in the extraction direction on both sides of the engagement claw A stopper is provided to prevent the lock piece from warping.

  In this configuration, since the locking piece of the first space in the locking socket is bent in the direction opposite to the second space, the distance between the first space and the second space in consideration of the bending amount of the locking piece. There is no need to secure a large. Therefore, even if the guide wall for guiding the bracket to the second space is provided at the boundary between the two spaces, the dimension between the axis of the cable gripped by the clamp body and the lid and the bracket Can be set small.

Further, by providing a stopper that prevents the lock piece from being warped by contacting the lock insertion portion when the lock piece in the first space receives a load in the extraction direction on both sides of the engaging claw, for example, the stopper Compared with the case where is provided on the distal end side of the engaging claw, the movement trajectory of the stopper accompanying the bending operation of the lock piece is compact, and the clamp itself is also compact.

The perspective view showing the clamp for cables. The top view showing the clamp for cables. The left view showing the clamp for cables. The right view showing the clamp for cables. Sectional drawing of the AA arrow direction of FIG. Sectional drawing which expanded and represented a part of FIG. Sectional drawing of the BB arrow direction of FIG. Sectional drawing of the CC arrow direction of FIG. Sectional drawing of the state which gripped the large diameter cable with the clamp for cables. Sectional drawing of the state which gripped the small diameter cable with the clamp for cables. Sectional drawing which represented the change example of the lock structure corresponding to FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
The cable clamp shown in the drawings grips a corrugated tube 30 through which a wire harness or the like is inserted as an example of a cable wired to a vehicle body or the like (FIG. 9 or FIG. 10), and in that state, the vehicle body side It is of the type that is mounted on.
The clamp is an integrally molded product made of synthetic resin, and includes a clamp body 10 and a lid body 12 each having semicircular inner peripheral surfaces 10a and 12a. One end of each of the clamp body 10 and the lid 12 is connected by a thin hinge 14 having flexibility. A lock socket 16 is formed at the other end of the clamp body 10, and a lock insertion portion 28 is formed at the other end of the lid 12.

  The semicircular inner peripheral surfaces 10a and 12a of the clamp body 10 and the lid body 12 are portions that divide and sandwich the outer periphery of the corrugated tube 30, and the inner peripheral surfaces 10a and 12a include locking ribs 10b, There are three rows of 12b (FIGS. 1 and 2). Each of these locking ribs 10b and 12b has an annular groove on the outer periphery of the corrugated tube 30 when the outer periphery of the corrugated tube 30 is sandwiched and held by the clamp body 10 and the lid 12 as shown in FIG. Engage with. Thereby, it is possible to prevent the clamp and the corrugated tube 30 from moving relatively in the length direction.

For example, as shown in FIGS. 5 and 6, the lock socket 16 of the clamp body 10 has a hollow shape opened on both upper and lower surfaces, and the inside thereof is divided into a first space 18 and a second space 22. The lock insertion portion 28 of the lid 12 is inserted into the first space 18 from above the lock socket 16. Further, a bracket 32 (for example, FIG. 1) fixed to the vehicle body or the like that is a cable wiring portion is inserted into the second space 22 from below the locking socket 16.
A guide wall 26 for guiding the insertion of the bracket 32 to the second space 22 is located at the boundary between the first space 18 and the second space 22. The guide wall 26 is continuous over the entire area in the width direction of both the spaces 18 and 22 on at least the lower side of the locking socket 16 (FIG. 8).

Inside the first space 18, a lock piece 20 is formed on a part of the wall that is continuous with the inner peripheral surface 10 a of the clamp body 10. The lock piece 20 has a free end on the lower side of FIGS. 5 and 6 and can be bent in the left direction of the drawing, that is, in the direction opposite to the second space 22. Further, the lock piece 20 has a downward engaging claw 20a projecting toward the inner side of the first space 18 on the free end side, and stoppers 20b positioned on both sides of the engaging claw 20a.
Inside the second space 22, the outer wall of the lock socket 16 is a lock piece 24. The lock piece 24 has a free end on the upper side of FIGS. 5 and 6 and can be bent rightward in the drawing, that is, outward of the lock socket 16. An upward engaging claw 24 a that protrudes to the inner side of the second space 22 is provided near the free end of the lock piece 24.

Two engagement holes 28 a and 28 b are formed in the lock insertion portion 28 of the lid 12 along the insertion direction of the lock socket 16 with respect to the first space 18. Therefore, when the lock insertion portion 28 is inserted into the first space 18 of the lock socket 16, the engagement hole 28a near the tip is first engaged with the engagement claw 20a of the lock piece 20 (FIG. 9). When the locking insertion portion 28 is further inserted, the next engagement hole 28b near the base end engages with the engagement claw 20a (FIG. 10).
When the bracket 32 is inserted into the second space 22 of the locking socket 16, the engagement hole 32a opened in the bracket 32 is engaged with the engagement claw 24a of the lock piece 24 (FIGS. 9 and 9). 10).

Next, the procedure for using the clamp will be described by taking as an example a case where the corrugated tube 30 to be gripped by the clamp has a relatively large diameter.
First, after setting the corrugated tube 30 on the inner peripheral surface 10 a of the clamp body 10, the lid body 12 is operated to close around the hinge 14, and the lock insertion portion 28 is placed in the first space 18 of the lock socket 16. Insert from above. At this time, the locking insertion portion 28 advances while pushing and bending the lock piece 20 of the first space 18 in the direction opposite to the second space 22. When the engagement hole 28a near the tip of the lock insertion portion 28 matches the engagement claw 20a of the lock piece 20, the engagement claw 20a and the engagement hole 28a engage with each other as described above, and the lock The insertion portion 28 is locked to the locking socket 16 side at the insertion position (FIG. 9). As a result, the corrugated tube 30 is held in a state of being gripped by the clamp body 10 and the inner peripheral surfaces 10 a and 12 a of the lid body 12.

  When the corrugated tube 30 has a relatively small diameter, the lock insertion portion 28 of the lid 12 is inserted into the first space 18 of the lock socket 16 more than the state shown in FIG. As a result, as in the case described above, the locking insertion portion 28 advances while pushing and bending the lock piece 20, and this time the engagement hole 28 b near the proximal end of the locking insertion portion 28 is engaged with the engagement claw of the lock piece 20. Engage with 20a. Therefore, the locking insertion portion 28 is locked to the locking socket 16 side at the insertion position shown in FIG. 10, and the small-diameter corrugated tube 30 is also properly held by the clamp body 10 and the inner peripheral surfaces 10a and 12a of the lid body 12. .

Next, as shown in FIGS. 9 and 10, a bracket 32 such as a vehicle body is inserted into the second space 22 of the locking socket 16 from below. As a result, the engagement hole 32a of the bracket 32 is engaged with the engagement claw 24a of the lock piece 24 in the second space 22 as described above, and the bracket 32 is locked to the locking socket 16 side at the insertion position. . As a result, the clamp is mounted on the vehicle body or the like, and the corrugated tube 30 (wire harness) is held in a predetermined wiring state.
Further, the bracket 32 is appropriately guided toward the second space 22 by the guide wall 26 provided at the boundary between the spaces 18 and 22 in the locking socket 16, and the bracket is inserted into the first space 18 of the locking socket 16. 32 can be prevented from being erroneously inserted.

For example, in the state where the corrugated tube 30 is gripped by the clamp body 10 and the lid body 12 as shown in FIG. 9, when a load in the extraction direction acts on the lock insertion portion 28, the lock piece 20 in the first space 18 is engaged. A force in a direction of bending toward the second space 22 is received through the engaging portion between the claw 20a and the engaging hole 28a. When this is allowed, the lock piece 20 is warped, the engagement (lock) between the engagement claw 20 a and the engagement hole 28 a is released, and the lock insertion portion 28 comes out of the first space 18. The same applies to the gripping state shown in FIG.
However, in the present embodiment, when the lock insertion portion 28 receives a load in the extraction direction, the stopper 20b of the lock piece 20 is placed on both sides of the engagement hole 28a (or engagement hole 28b) of the lock insertion portion 28. Contact and prevent the lock piece 20 from warping. And since this stopper 20b is located in the both sides of the engagement nail | claw 20a, compared with the structure by which the stopper was provided in the front end side of this lock piece 20, the stopper 20b accompanying the bending operation | movement of the lock piece 20 The turning radius is small, and the movement trajectory fits compactly.

  As already described, since the lock piece 20 of the first space 18 is bent in the direction opposite to the second space 22, the bending of the lock piece 20 does not affect the second space 22 side. For this reason, the distance between the first space 18 and the second space 22 can be set as small as possible without considering the amount of bending of the lock piece 20. Accordingly, even if the guide wall 26 is provided at the boundary between the first space 18 and the second space 22, the axis of the corrugated tube 30 and the bracket 32 in the clamp body 10 in FIG. 9 or FIG. It becomes possible to reduce the dimension between them.

  As shown in FIG. 11, the lock piece 20 in the first space 18 can be replaced with a configuration in which the upper side of the drawing is a free end in a part of the wall connected to the inner peripheral surface 10a of the clamp body 10. is there. The lock piece 20 having this configuration can also bend in the direction opposite to the second space 22, and has a downward engaging claw 20 a protruding to the inner side of the first space 18.

DESCRIPTION OF SYMBOLS 10 Clamp main body 10a Inner peripheral surface 12 Cover body 12a Inner peripheral surface 14 Hinge 16 Lock socket 18 1st space 20 Lock piece 22 2nd space 24 Lock piece 26 Guide wall 28 Lock insertion part 32 Bracket

Claims (1)

A clamp body and a lid body, which are connected to each other by hinges, are connected to each other, and the other ends of the cables are locked with each other in a state where the outer periphery of the cable is gripped by the semicircular inner peripheral surface. A cable clamp to be attached to the bracket of the cable wiring location,
A lock socket is provided at the other end of the clamp body, a lock insertion part is provided at the other end of the lid, and the inside of the lock socket allows the insertion of the lock insertion part of the lid. The space is divided into a second space in which the bracket of the cable wiring portion can be inserted, and a guide wall for guiding the insertion of the bracket to the second space is provided at the boundary between the first space and the second space. Both spaces are provided with locking pieces for locking the locking insertion portions and the brackets at the respective insertion positions. The locking pieces in the first space are connected to the inner peripheral surface of the clamp body in the locking socket. And is set so as to bend in a direction opposite to the second space by inserting the lock insertion portion into the first space, and the lock piece of the first space is engaged with the lock insertion portion of the lid. Mating engaging claws And a clamp for a cable provided with stoppers on both sides of the engaging claw for preventing the lock piece from being warped by contacting the lock insertion portion when receiving a load in the extraction direction .

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