JP2016184009A - Connector boot and cable with connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector boot which is retained in the state bent in an arbitrary shape without complicating a structure of the connector boot and incorporating metal wire or the like therein and also without spending excessive cost, and also to provide a cable with a connector.SOLUTION: A connector boot includes a hollow boot body 10a. In the boot body 10a, a wall part 12 is formed covering around an optical fiber cable by being extended in the longitudinal direction of the boot body 10a. On the wall part 12, a slit 13 which is orthogonal to the longitudinal direction and opened to the outside and an engaging part 14 are provided. The engaging part 14 is formed of a recess 15 which is located in a part of one of wall parts 12 opposite to each other in the longitudinal direction while sandwiching the slit 13, and a protrusion 16 located in a part of the other and capable of being engaged with the recess 15. The optical connector boot 10 can hold an engaged state between the recess 15 and the protrusion 16.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a connector boot and a cable with a connector.

  2. Description of the Related Art A connector boot that covers a periphery so as to protect a cable adjacent to a connector is known (for example, see Patent Documents 1 to 3).

Japanese Patent Laid-Open No. 08-122567 US Pat. No. 6,634,801 Utility Model Registration No. 3173192

When the connector is connected to a terminal such as an electronic device, the cable bends downward due to the load. However, there is a case where it is desired to keep a cable protruding from a connector terminal of an electronic device or the like in a desired direction with a desired bending radius due to the convenience of cable wiring. In the case of an optical fiber cable, there is a problem in that transmission loss increases when the bend becomes a steep angle.
Due to the above requirements, a connector boot is required that can bend the cable into an arbitrary shape and hold it in that state.

For example, the optical connector boot described in Patent Document 1 is bent at a gentle angle. However, the optical connector boot described in Patent Document 1 does not have a structure that can maintain the bent state.
Patent Document 2 describes an adjustable strain relief boot including a stationary part and a movable part connected so as to be able to slide to the stationary part. However, the adjustable strain relaxation boot of Patent Document 2 can be bent only in one direction and has a more complicated structure than a normal connector boot.
Patent Document 3 describes a boot for an optical fiber connector which is bent into a desired shape and kept in a desired shape by incorporating a metal wire. However, the boot for the optical fiber connector of Patent Document 3 requires a member such as a metal wire, and the structure is complicated compared to a normal connector boot.
In order to satisfy the above-described requirements, the conventional connector boot has a complicated structure and a metal wire or the like is built in, so that the cost is excessive.

  Therefore, an object of the present invention is to hold the connector boot in a state of being bent into an arbitrary shape without complicating the structure of the connector boot or incorporating a metal wire or the like and without extra cost. The object is to provide a connector boot and a cable with a connector.

A connector boot according to an aspect of the present invention includes a hollow boot body,
The boot body is formed with a wall portion that extends in the longitudinal direction of the boot body and covers the periphery of the cable.
The wall portion is provided with a slit that opens to the outside perpendicular to the longitudinal direction, and an engaging portion,
The engaging portion is
It consists of a concave part in one part of the wall part facing the longitudinal direction across the slit, and a convex part in the other part that can be engaged with the concave part,
The engagement state between the concave portion and the convex portion can be maintained.

  A cable with a connector according to one aspect of the present invention has a connector at an end, and has the connector boot adjacent to the connector.

  According to the present invention, the connector boot is held in a state bent to an arbitrary shape without complicating the structure of the connector boot or incorporating a metal wire or the like and without incurring extra costs. Can do.

It is a schematic plan view of the optical fiber cable which has the boot for optical connectors which concerns on 1st embodiment. It is a perspective view of the boot for optical connectors concerning a first embodiment. It is a perspective view of the boot for optical connectors which concerns on 2nd embodiment. It is a perspective view of the boot for optical connectors which concerns on 3rd embodiment.

[Description of Embodiment of the Present Invention]
First, embodiments of the present invention will be listed and described.
The connector boot according to the embodiment of the present invention,
(1) It has a hollow boot body,
The boot body is formed with a wall portion that extends in the longitudinal direction of the boot body and covers the periphery of the cable.
The wall portion is provided with a slit that opens to the outside perpendicular to the longitudinal direction, and an engaging portion,
The engaging portion is
It consists of a concave part in one part of the wall part facing the longitudinal direction across the slit, and a convex part in the other part that can be engaged with the concave part,
The engagement state between the concave portion and the convex portion can be maintained.
As a result, the structure of the connector boot is not complicated, the metal wire or the like is incorporated, and the extra cost is not required. The boot can be held in a state bent into an arbitrary shape.

(2) In the connector boot of (1), a plurality of the engaging portions are provided in the circumferential direction of the boot body.
Since a plurality of engaging portions are provided in the circumferential direction of the boot body, only the engaging portion in the direction desired to be bent among the circumferential engaging portions is engaged, and the connector boot is bent in a desired direction. be able to.

(3) In the connector boot of (1) or (2), a plurality of the engaging portions are provided in the longitudinal direction of the boot body.
By providing a plurality of engaging portions in the longitudinal direction of the boot body, a plurality of engaging portions that bend in the same direction can be engaged to increase the bending angle. Thereby, the angle at which the connector boot is bent can be adjusted by changing the number of engaging portions to be engaged.

(4) In the connector boot according to any one of (1) to (3), in the portion of the convex portion that engages with the concave portion, the external dimension of the convex portion increases toward the back of the concave portion. And
The internal dimension of the entrance of the concave part is smaller than the maximum external dimension of the convex part.
Since the maximum external dimension of the convex part is larger than the internal dimension of the entrance of the concave part, after engaging the concave part and the convex part, the convex part is difficult to return beyond the entrance of the concave part and is held in the engaged state.

(5) In the connector boot of (4), the shape of the concave portion and the convex portion is round.
Since the maximum external dimension of the convex part that protrudes into the round shape is larger than the internal dimension of the entrance of the concave part that is recessed in the round shape, the convex part is difficult to return beyond the entrance. And the convex part can be held in the engaged state.

(6) In the connector boot of (4), the shape of the concave portion and the convex portion is a square shape.
Since the convex part has the same rectangular shape as the concave part, the convex part fits into the concave part, and the convex part is difficult to return beyond the entrance of the concave part, so that the concave part and the convex part can be held in an engaged state. .

(7) In the connector boot of (4), the shape of the concave portion and the convex portion is an arrow shape.
The tip of the arrow of the convex part fits into the tip of the arrow of the concave part, and the convex part is difficult to return beyond the inner wall of the part bent at a right angle from the parallel part of the arrow of the concave part. The part can be held in an engaged state.

A cable with a connector according to an embodiment of the present invention,
(8) A connector is provided at the end, and the connector boot according to any one of (1) to (7) is provided adjacent to the connector.
Without complicating the structure of the connector boot in the cable with connector or incorporating a metal wire, etc., the connector boot can be held in a bent state without any extra cost. it can. Thereby, when connecting the connector of a cable with a connector to a terminal of an electronic device or the like, it is possible to prevent the bending of the cable with a connector from becoming a steep angle and an increase in transmission loss. Moreover, the cable which protrudes from connector terminals, such as an electronic device, can be kept bent in the desired direction for the convenience of cable wiring.

[Details of the embodiment of the present invention]
Specific examples of a connector boot and a cable with a connector according to an embodiment of the present invention will be described below with reference to the drawings.
In addition, this invention is not limited to these illustrations, is shown by the claim, and intends that all the changes within the meaning and range equivalent to a claim are included.

[First embodiment]
FIG. 1 is a schematic plan view of an optical fiber cable 1 with a connector having an optical connector boot 10 according to a first embodiment. FIG. 2 is a perspective view of the optical connector boot 10 according to the first embodiment.
As shown in FIG. 1, the optical fiber cable with connector 1 has an optical connector 2 at the end, and is adjacent to the optical connector 2 and covers the periphery so as to protect the optical fiber cable 3. Have

As shown in FIGS. 1 and 2, the optical connector boot 10 is adjacent to the optical connector 2 at the end of the optical fiber cable 1 with a connector and covers the periphery so as to protect the optical fiber cable 3. .
The optical connector boot 10 includes a hollow boot body 10a. The boot body 10a includes a cylindrical covering portion 11 having a constant diameter covering the periphery of the optical fiber cable 3 in a portion adjacent to the optical connector 2. A tapered cylindrical wall portion 12 is formed so as to cover the periphery of the optical fiber cable 3 at a portion away from the optical connector 2 and to have a small diameter at the tip. Of the boot body 10a, at least the wall portion 12 is formed of a material having elasticity. The covering portion 11 may also be a material having elasticity or the same material as the wall portion 12.

The wall portion 12 is provided with a slit 13 that opens to the outside perpendicular to the longitudinal direction of the boot body 10a, and an engaging portion 14.
The engaging portion 14 is engaged with the concave portion 15 in one part of the wall portion 12 facing the longitudinal direction of the boot main body 10 a across the slit 13 and the concave portion 15 in the other portion of the wall portion 12. It is composed of possible convex portions 16.

In the present embodiment, as shown in FIG. 1, the concave portion 15 has a shape in which a part of the wall portion 12 is recessed in a round shape, and the convex portion 16 has a portion of the wall portion 12 that protrudes in a round shape. It has a shape.
In the portion of the convex portion 16 that engages with the concave portion 15, the external dimension of the convex portion 16 increases toward the back of the concave portion 15, and the concave portion 15 has an internal dimension at the entrance that is the largest outside of the convex portion 16. It is smaller than the dimensions.

When engaging the concave portion 15 and the convex portion 16 as described above, the following is performed.
By pressing the convex portion 16 side, the wall portion 12 is elastically deformed, and the tip of the convex portion 16 is pressed against the entrance of the concave portion 15. When the outer dimension of the protrusion 16 is larger than the inner dimension of the entrance of the recess 15, the outer wall of the protrusion 16 comes into contact with the entrance of the recess 15. By pressing with a certain force or more, the convex portion 16 is elastically deformed so as to expand the entrance of the concave portion 15 and enters the concave portion 15. After the convex portion 16 enters the concave portion 15, the pressing is stopped. At this time, since the maximum external dimension of the convex part 16 is larger than the internal dimension of the entrance of the concave part 15, the convex part 16 is difficult to return beyond the entrance, so that the concave part 15 and the convex part 16 are held in an engaged state. .

  In the above engagement state, the wall portion 12 is deformed so as to block a part of the slit 13 at the engaging portion of the convex portion 16 and the concave portion 15, and the boot body 10a is bent toward the engaging portion. That is, the optical connector boot 10 is held in a bent state.

And the engaging part 14 is provided with two or more in the circumferential direction of the boot main body 10a, and two or more are provided also in the longitudinal direction of the boot main body 10a.
Since a plurality of engaging portions 14 are provided in the circumferential direction of the boot main body 10a, only the engaging portions 14 in the direction to be bent are engaged among the engaging portions 14 in the circumferential direction of the boot main body 10a. The optical connector boot 10 can be bent in the direction of.

  In addition, since a plurality of engaging portions 14 are provided in the longitudinal direction of the boot body 10a, a plurality of engaging portions 14 that bend in the same direction can be engaged to increase the bending angle. Thereby, the angle at which the optical connector boot 10 is bent can be adjusted by changing the number of engaging portions 14 to be engaged.

[Second Embodiment]
FIG. 3 is a perspective view of the optical connector boot 20 according to the second embodiment.
Although the optical fiber cable 1 with a connector shown in FIG. 1 is illustrated as having the optical connector boot 10 of the first embodiment, the optical fiber cable 1 with a connector is an optical connector of the second embodiment. It may have a boot 20 for use. That is, the optical connector boot 20 shown in FIG. 3 is adjacent to the optical connector 2 and protects the optical fiber cable 3 at the end of the optical fiber cable with connector 1 of FIG. 1 as in the first embodiment. It covers the surroundings.

  As shown in FIG. 3, the optical connector boot 20 includes a hollow boot body 20 a as in the first embodiment. A covering portion 21 and a wall portion 22 are formed on the boot body 20a. The wall portion 22 is provided with a slit 23 and an engaging portion 24 (a concave portion 25 and a convex portion 26).

The optical connector boot 20 of the second embodiment is different from the optical connector boot 10 of the first embodiment in the shapes of the concave portion 25 and the convex portion 26 of the engaging portion 24, and other points are as follows. This is the same as the optical connector boot 10 of the first embodiment.
As shown in FIG. 3, the recess 25 is recessed in one part of one of the wall portions 22 that are opposed to each other with the slit 23 interposed therebetween so that the inner wall has a square shape (square shape). The inner dimension of the recess 25 increases from the entrance to the back, and becomes the maximum internal dimension at the first corner of the inner wall. And as it goes further back, the internal dimension becomes smaller and the innermost part is a corner.

The convex portion 26 has a rectangular shape so that the corner portion at the tip thereof faces the entrance of the concave portion 25, protrudes from the other part of the wall portion 22 facing the slit 23, and can engage with the concave portion 25. The same square shape.
In the convex portion 26, in the portion engaging with the concave portion 25, the external dimension of the convex portion 26 increases toward the back of the concave portion 25, and becomes the maximum external dimension at the first corner. From the first corner to the other part of the wall 22, the external dimension is small.
Further, the internal dimension of the entrance of the concave portion 25 is smaller than the maximum external dimension of the convex portion 26.

When engaging the concave portion 25 and the convex portion 26 as described above, the following is performed.
By pressing the convex portion 26 side, the wall portion 22 is elastically deformed, and the corner portion at the tip of the convex portion 26 is caused to enter from the entrance of the concave portion 25. Eventually, the outer wall of the convex portion 26 comes into contact with the entrance of the concave portion 25, but is further pressed so as to elastically deform the entrance portion of the concave portion 25. Then, the first corner of the convex portion 26 having the maximum external dimension is pressed to a position where the first corner of the concave portion 25 having the maximum internal dimension is matched. Since the convex portion 26 has the same rectangular shape as the concave portion 25, the convex portion 26 fits into the concave portion 25, and the convex portion 26 is difficult to return beyond the entrance of the concave portion 25. 26 is held in an engaged state.

  Also in the present embodiment, by providing a plurality of engaging portions 24 in the circumferential direction, only the engaging portion 24 in the direction desired to be bent among the plurality of engaging portions 24 is engaged, and the optical connector in a desired direction. The boot 20 can be bent.

  Further, since a plurality of engaging portions 24 are provided in the longitudinal direction of the boot body 20a, the angle of bending by engaging a plurality of engaging portions 24 that bend in the same direction can be increased. Thereby, the angle at which the optical connector boot 20 is bent can be adjusted by changing the number of engaging portions 24 to be engaged.

[Third embodiment]
FIG. 4 is a perspective view of an optical connector boot 30 according to the third embodiment.
Although the optical fiber cable 1 with a connector shown in FIG. 1 is illustrated as having the optical connector boot 10 of the first embodiment, the optical fiber cable 1 with a connector is an optical connector of the third embodiment. The boot 30 may be provided. That is, the optical connector boot 30 shown in FIG. 4 is adjacent to the optical connector 2 and protects the optical fiber cable 3 at the end of the optical fiber cable with connector 1 of FIG. 1 as in the first embodiment. It covers the surroundings.

  As shown in FIG. 4, the optical connector boot 30 includes a hollow boot body 30a, as in the first embodiment. A covering portion 31 and a wall portion 32 are formed on the boot body 30a. The wall portion 32 is provided with a slit 33 and an engaging portion 34 (a concave portion 35 and a convex portion 36).

The optical connector boot 30 of the third embodiment is different from the optical connector boot 10 of the first embodiment in the shapes of the concave portion 35 and the convex portion 36 of the engaging portion 34, and other points are as follows. This is the same as the optical connector boot 10 of the first embodiment.
As shown in FIG. 4, the recess 35 is formed of an arrow-shaped shape (parallel portion and triangular tip portion) with the tip of the arrow at the back in one part of the wall portion 32 facing the slit 33. Shape). From the entrance to the predetermined position, the concave portion 35 is formed in a straight line with parallel inner wall surfaces so that the internal dimensions thereof are the same, like a parallel portion of an arrow shape. Then, the inner wall surface is bent at a substantially right angle at the end on the back side of the parallel portion, and the internal dimension becomes the maximum, which becomes an arrow-shaped tip portion. As for this tip part, the inner dimension becomes smaller as going to the back, and the innermost part is the corner of the tip.

The convex portion 36 has an arrow shape (a shape composed of a parallel portion and a triangular tip portion) so that the tip thereof faces the entrance of the recess 35, and the other part of the wall portion 32 that faces the slit 33. It protrudes from the shape and can be engaged with the recess 35.
In the portion of the convex portion 36 that engages with the concave portion 35 (arrow-shaped tip portion), the external dimension of the convex portion 36 increases toward the back of the concave portion 35, and the maximum external dimension at the corner of the triangle is Become. And if it exceeds a corner | angular part, it will be bent at a substantially right angle, an external dimension will become small, and it will become the arrow-shaped parallel part with an equal external dimension until it reaches the other part of the wall part 32.
Further, the internal dimension of the entrance of the concave portion 35 is smaller than the maximum external dimension of the convex portion 36.

When engaging the concave portion 35 and the convex portion 36 as described above, the following is performed.
The convex portion 36 side is pressed to elastically deform the wall portion 32, and the arrow-shaped tip portion of the convex portion 36 enters from the entrance of the concave portion 35. Eventually, the outer wall of the convex portion 36 comes into contact with the parallel portion that continues from the entrance of the concave portion 25, and the parallel portion is further pressed so as to be elastically deformed. Then, the arrow-shaped tip portion of the convex portion 36 is pressed to a position where it matches the arrow-shaped tip portion of the concave portion 35.
The arrow-shaped tip portion of the convex portion 36 fits into the arrow-shaped tip portion of the concave portion 35, and the convex portion 36 is difficult to return beyond the inner wall of the portion bent at a right angle from the parallel portion of the concave portion 35. The concave portion 35 and the convex portion 36 are held in an engaged state.

  Also in this embodiment, since a plurality of engaging portions 34 are provided in the circumferential direction of the boot body 30a, only the engaging portion 34 in the direction desired to be bent among the plurality of engaging portions 34 is engaged, The optical connector boot 30 can be bent in this direction.

  Further, by providing a plurality of engaging portions 34 in the longitudinal direction of the boot body 30a, a plurality of engaging portions 34 that bend in the same direction can be engaged to increase the bending angle. Thereby, the angle at which the optical connector boot 30 is bent can be adjusted by changing the number of engaging portions 34 to be engaged.

  The optical connector boot 10 of the optical connector boot 10 of the first embodiment, the optical connector boot 20 of the second embodiment, or the optical connector boot 30 of the third embodiment described in detail above is included. The optical fiber cable 1 with a connector is a state in which the boot for an optical connector is bent into an arbitrary shape without complicating the structure of the boot for an optical connector or incorporating a metal wire or the like, and without extra cost. And can be held. Moreover, it can hold | maintain by adjusting the space | interval of the slit (space | interval of the convex part and recessed part which mutually engages) so that bending smaller than necessary may not be added. Thereby, when connecting the optical connector 2 of the optical fiber cable 1 with a connector to a terminal of an electronic device or the like, it is possible to prevent the bending of the optical fiber cable 1 with a connector from becoming a steep angle and increasing the transmission loss of light. it can. Moreover, the optical fiber cable 1 with a connector protruding from the optical connector terminal of an electronic device or the like can be kept bent in a desired direction due to the convenience of cable wiring.

  In the examples shown in the first embodiment, the second embodiment, and the third embodiment, the optical connector boot and the optical fiber cable with the connector have been described, but the present invention is not limited to these, It can also be used as a connector boot for a wire cable including a metal conductor and a cable with a connector.

DESCRIPTION OF SYMBOLS 1 Optical fiber cable with connector 2 Optical connector 3 Optical fiber cable 10, 20, 30 Optical connector boot 10a, 20a, 30a Boot body 11, 21, 31 Cover part 12, 22, 32 Wall part 13, 23, 33 Slit 14 , 24, 34 Engagement part 15, 25, 35 Concave part 16, 26, 36 Convex part

Claims (8)

With a hollow boot body,
The boot body is formed with a wall portion that extends in the longitudinal direction of the boot body and covers the periphery of the cable.
The wall portion is provided with a slit that opens to the outside perpendicular to the longitudinal direction, and an engaging portion,
The engaging portion is
It consists of a concave part in one part of the wall part facing the longitudinal direction across the slit, and a convex part in the other part that can be engaged with the concave part,
A connector boot capable of maintaining an engaged state between the concave portion and the convex portion.   The connector boot according to claim 1, wherein a plurality of the engaging portions are provided in a circumferential direction of the boot body.   The connector boot according to claim 1, wherein a plurality of the engaging portions are provided in a longitudinal direction of the boot body. In the portion of the convex portion that engages with the concave portion, the external dimension of the convex portion increases toward the back of the concave portion,
4. The connector boot according to claim 1, wherein an internal dimension of the entrance of the concave portion is smaller than a maximum external dimension of the convex portion. 5.   The boot for connectors according to claim 4 whose shape of said crevice and said convex part is a round shape.   The boot for connectors according to claim 4 whose shape of said crevice and said convex part is a square.   The connector boot according to claim 4, wherein the shape of the concave portion and the convex portion is an arrow shape.   The cable with a connector which has a connector boot as described in any one of Claims 1-7 which has a connector in an edge part and adjoins the said connector.

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