JP4849491B2 - Mounting structure of adapter and fixing member - Google Patents

Description

  The present invention relates to an attachment structure between an adapter and a fixing member, and more particularly to an attachment structure between an adapter for connecting signal cable connectors and a fixing member for fixing the adapter.

In recent years, a signal cable using a communication optical fiber has been widely used from a signal cable using a copper wire in accordance with an increase amount of data transmitted through the signal cable. This optical fiber cable requires an adapter for connection unlike a copper signal line, and this adapter is formed in a rectangular tube shape, and by inserting a connector attached to the end of the optical fiber cable from the opening at both ends, The tip of the optical fiber cable is opposed to be able to transmit signals (for example, Patent Document 1).
JP 2002-243978 A

  The problem to be solved by the present invention is that in the above-mentioned adapter, in order to fix the adapter to the fixing member, a protruding portion is provided on both sides, and a hole through which a screw is inserted is formed in the protruding portion. The overhanging part can be fixed by screwing it to the fixing member. However, as the downsizing of each device progresses, the overhanging part is an obstacle to fit this adapter in the device (for example, optical outlet). It was a point to become.

  The present invention solves the above-described problems, eliminates an extra protruding portion from the adapter and the fixing member, facilitates accommodation in the apparatus, and can be miniaturized, and fixes the adapter to the fixing member. It is an object of the present invention to provide a mounting structure of an adapter and a fixing member that does not require parts (bolts, nuts, etc.) and can improve work efficiency.

In order to solve the above problems, the mounting structure of the adapter and the fixing member according to the present invention includes the following requirements for connecting an adapter for connecting connectors of a signal cable to the fixing member.
(B) said adapter fitting groove is formed on the surface of that (b) the fixing member is removably attached to the fixed member, Hamago突the bottom surface of the adapter to slide fitted into the fitting groove The part is formed
(C) A locking claw that is elastically bent protrudes from the fitting protrusion.
(D) A notch engaging portion is formed in the fitting groove.
(E) When the fitting projection slide-fits into the fitting groove, the engaging claw of the adapter engages with the notch engaging portion, and the fitting projection from the fitting groove Be configured to restrict free omissions

  The signal cable connected by the adapter may be an optical fiber cable.

  According to the first aspect of the invention, the adapter can be fixed to the fixing member by simply fitting the fitting protrusion formed on the bottom surface of the adapter into the fitting groove formed on the surface of the fixing member. Since the mechanism for fixing can be fixed without projecting to the outside, the size can be reduced and the device can be easily accommodated in the device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First embodiment and its modifications]
1 to 8 are diagrams showing a first embodiment of the present invention and its modification.
In FIG. 1, the code | symbol 1 shows the adapter which connects the connectors 3 of the signal cable 2, and the code | symbol 5 has shown the fixing member to which the said adapter 1 is attached. In the present embodiment, a case where an optical fiber cable is used as the signal cable 2 will be described.

  The connector 3 of the optical fiber cable 2 is a known SC-type optical connector (see FIGS. 2A and 2B) that conforms to a commonly used optical fiber standard system. The tip of the optical fiber cable 2 and the ferrule 6 are connected and fixed inside the columnar connector 3, and the tip of the ferrule 6 built in from the front end of the connector 3 protrudes, and an adapter described later is provided on the upper surface. A key 8 that engages with a guide groove 7 formed on the upper surface of 1 and restricts the orientation of the connector 3 with respect to the adapter 1 is formed to protrude, and hooks 10 disposed inside the adapter 1 are engaged with both side surfaces, A locking recess 11 for fixing the connector 3 in the adapter 1 is formed.

  The adapter 1 is for connecting the connectors 3 by inserting the connector 3 from both sides, and is formed in a substantially rectangular tube shape. Although the details of the internal structure are omitted, as shown in the sectional view of FIG. The hook 10 is formed in the connector 3 so as to be engaged with the engaging recess 11 of the inserted connector 3 to fix the connector 3 to the adapter 1. Guide grooves 7 for guiding the key 8 of the connector 3 are provided at both longitudinal ends of the upper surface. Is formed.

  On both ends of the adapter 1 in the longitudinal direction on the back side, fitting protrusions 16 for fitting into fitting grooves 15 formed on the fixing member 5 are formed (see FIG. 4C). The fitting protrusion 16 is formed with an inverted trapezoidal engaging groove 17 orthogonal to the central portion, and a locking member 20 described later is engaged with the engaging groove 17.

  The fixing member 5 is for attaching the adapter 1, and as shown in FIG. 5, the fixing member 5 is formed in a plate shape, and a fitting groove 15 into which the fitting protrusion 16 of the adapter 1 is fitted in the center of the surface. The second fitting groove 18 is formed perpendicular to the fitting groove 15. The fitting groove 15 and the second fitting groove 18 are constituted by dovetail grooves, the fitting groove 15 is opened on both sides of the fixing member 5, and the second fitting groove 18 is formed on one end side of the fixing member 5. It is open and formed in a cross shape as a whole.

  The second fitting groove 18 is formed with a stopper 21 that engages with a lock member 20 to be described later and positions the lock member 20. The stopper 21 is composed of a section formed on the bottom surface of the second fitting groove 18 so as to be bent in a U shape in the longitudinal direction and bent up and down, and the distal end portion of the section 21 is engaged with the top surface. A protrusion 21 a is formed to protrude, and the engagement protrusion 21 a is selectively engaged with a temporary fixing recess 22 formed on the back surface of the lock member 20 and a retaining recess 23.

  Next, the attachment aspect which attaches the adapter 1 of the said structure to the fixing member 5 is demonstrated.

  First, as shown in FIG. 6A, the lock member 20 is inserted into the second fitting groove 18 of the fixing member 5, and is inserted until the temporary fixing recess 22 is engaged with the engagement protrusion 21 a of the stopper 21. Then, the lock member 20 is set on the fixing member 5 (see FIG. 6B).

  Next, as shown in FIG. 6 (b), the fitting protrusion 16 formed on the back surface of the adapter 1 is inserted into the fitting groove 15 of the fixing member 5, and is formed at the center portion of the fitting protrusion 16. The engaging groove 17 is inserted to a position corresponding to the second fitting groove 18. Thereafter, when the lock member 20 is pushed in until the retaining recess 23 of the lock member 20 is engaged with the engagement protrusion 21 a of the stopper 21, the tip of the lock member 20 passes through the engagement groove 17 of the adapter 1. It is stable and the adapter 1 can be fixed on the fixing member 5 (see FIG. 6C).

  Next, a description will be given of a case where a plurality of adapters 1 for connecting a set of cables 2 can be fixed to a fixing member in a state where they are juxtaposed. FIG. 7A shows a case where two adapters 1 are arranged side by side and fixed to the fixing member 5 ′, and FIG. 7B shows a rear side perspective view of the adapter 1.

  The fixing member 5 ′ is formed with a fitting groove 15 ′ having a length corresponding to two horizontal widths of the adapter 1, one end opening on the side surface of the fixing member 5 ′, and the other end terminating on the fixing member. The second fitting groove 18 ′ is formed so as not to be opened, and the second fitting groove 18 ′ may be formed at a position corresponding to the engaging groove 17 of the adapter 1 attached to the opening end side of the fitting groove 15. .

  When the adapter 1 is fixed to the fixing member 5 ′, the lock member 20 is inserted in advance into the second fitting groove 18 ′ of the fixing member 5 ′ in the same manner as when the adapter 1 is fixed to the fixing member 5. The temporary fixing recess 22 is inserted until it engages with the engaging protrusion 21a of the stopper 21, the lock member 20 is set on the fixing member 5 ', and the fitting formed on the back surface of the first adapter 1a. The protrusion 16 is inserted into the fitting groove 15 ′ of the fixing member 5 ′, and is pushed in until the fitting protrusion 16 hits the terminal end 15a ′ of the fitting groove 15 ′.

  Further, the fitting protrusion 16 formed on the back surface of the second adapter 1 b is inserted into the fitting groove 15 ′ of the fixing member 5 ′, and the engaging groove 17 formed in the center portion of the fitting protrusion 16. Is inserted to a position corresponding to the second fitting groove 18 '. Thereafter, when the lock member 20 is pushed in until the retaining recess 23 of the lock member 20 is engaged with the engagement protrusion 21 a of the stopper 21, the tip of the lock member 20 passes through the engagement groove 17 of the adapter 1. The adapter 1b can be fixed on the fixing member 5 ′, and two adapters can be fixed on the fixing member.

  In addition, although the said fixing member 5 'demonstrated the case where the adapter 1 which connects one set of cables could be fixed in the state where it juxtaposed, the adapter which can connect a plurality of sets of cables can be fixed to a fixing member. You may do it.

  FIG. 8A shows a perspective view when the adapter 1 ′ for connecting two sets of cables is fixed to the fixing member 5 ″, and FIG. 8B shows a rear perspective view of the adapter 1 ′.

  When the adapter 1 ′ is fixed to the fixing member 5 ″, the fitting protrusion formed on the bottom surface of the adapter 1 ′ is the same as when the adapter 1 for connecting the pair of cables 2 is attached to the fixing member 5. The portion 16 ′ may be inserted into the fitting groove 15 ″ of the fixing member 5 ″, and the lock member 20 may be pushed into the engaging groove 17 ″ formed in the fitting protrusion 16 ″.

  Although the above-described adapter has been described with respect to the case where the signal cable is configured with an optical fiber cable, the signal cable is not limited to an optical fiber, and may be an electric cable. Further, although the optical fiber cable connector has been described as an SC type optical connector, it may be an MT type or MU type optical connector.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS.
The adapter 30 (optical fiber adapter) has a cylindrical configuration as shown in FIG. 9, and a connector connecting portion 31 is formed in the hollow portion. As shown in FIG. 10, the adapter 30 can be inserted into the connector portions 61 of the optical fiber 60 from opposite directions, and optically connect the connector portions 61 optically at the connector connection portion 31. It has a function as a connecting member.

  As shown in FIGS. 9B, 9C, and 9G, fitting protrusions 32 having wedges on both sides are formed on the outer rear surface of the adapter 30. As shown in FIG. The fitting protrusion 32 extends in the vertical direction of FIG. 9G, and a locking claw 33 that is elastically bent protrudes from the center of the back surface.

  On the other hand, dovetail-like fitting grooves 51 are formed on the surface of the fixing member 50 to which the adapter 30 is mounted, as shown in FIGS. The fitting groove 51 can form a fitting state by fitting and sliding the fitting protrusion 32 of the adapter 30 from one end side.

  A notch engaging portion 52 is formed at the center of the bottom surface of the fitting groove 51. When the fitting protrusion 32 is slidably fitted into the fitting groove 51, the locking claw 33 of the adapter 30 is engaged with the notch engaging portion 52, and the fitting protrusion 32 is free from the fitting groove 51. The loose omission is regulated (see FIG. 9 (h)). In addition, the notch engaging part 52 has penetrated the back surface of the fixing member 50, and the engagement state of the locking claw 33 with respect to the notch engaging part 52 is released by pushing out the locking claw 33 from the back surface side. Can do.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS.
In this embodiment, a plastic optical fiber 70 generally called POF is used as a signal cable (see FIG. 12), a connector portion 71 provided at one end of the optical fiber 70, and an adapter 30 for connecting the connector portion 71. Has a structure suitable for such an optical fiber 70 for POF. In general, the POF optical fiber 70 is used for LAN wiring for connecting between rooms in a house and devices.

The optical fiber 60 used in the second embodiment uses a silica-based glass optical fiber suitable for FTTH. The connector portion 61 of the optical fiber 60 and the adapter 30 for connecting the optical fiber 60 are such FTTH. The structure is suitable for silica-based glass optical fibers suitable for the above.
However, the present invention is not limited to the type of optical fiber, and the adapter having the structure shown in the second embodiment can be configured to be connected to an optical fiber for POF, and the third embodiment. The adapter shown by can also be made into the structure to which the silica type glass optical fiber suitable for FTTH is connected.

In the present embodiment, as shown in FIGS. 11 (f) and 11 (g), two engagement leg portions 35 (fitting protrusions) having spring properties are provided so as to protrude from the outer back portion of the adapter 30. The front end of the engaging leg 35 is curved like a bowl.
On the other hand, as shown in FIG. 11G, two locking grooves 55 (fitting grooves) are formed side by side on the surface of the fixing member 50. These engagement grooves 55 can form an engagement state by fitting and sliding the hook-shaped portions of the respective engagement leg portions 35 formed in the adapter 30 from one end.

In this embodiment, the adapter 30 is a two-core adapter. As shown in FIG. 11 (c), the two-core adapter 30 has two connector connection portions 31, 31 formed in the hollow portion, and each connector connection portion 31, 31 has a two-core optical fiber. 70 connector parts 71 can be inserted from the direction facing each other.
The two-core optical fiber 70 incorporates two optical fiber core wires. A connector portion 71 is formed at one end of the two-core optical fiber 70 by a male optical fiber connector for two-core (see FIGS. 12A and 12B).

In addition, this invention is not limited to embodiment mentioned above.
For example, the fitting protrusions 16 and 32 may be manufactured as a separate part from the adapter and attached to the adapter using a double-sided adhesive tape or the like. If comprised in this way, the fitting protrusions 16 and 32 can be provided also in the existing adapter. It is preferable that a locking claw 33 is also formed on the parts constituting the fitting protrusion 32.

It is a perspective view explaining the adapter and fixing member of a 1st embodiment concerning the present invention. (A) and (b) are the front views and side views of a cable. (A) (b) is the cross-sectional view and longitudinal cross-sectional view of an adapter. (A)-(e) is the front view, side view, back view, bottom view, and top view of an adapter. It is a perspective view explaining the relationship between a fixing member and a locking member. (A)-(c) is an explanatory perspective view of the attachment process which attaches an adapter to a fixing member. (A) and (b) are the perspective views of the fixing member which fixes two or more said adapters, and the bottom face side perspective view of an adapter. (A) and (b) are the perspective views of the adapter and fixing member which concern on the modification of 1st Embodiment, and the bottom face side perspective view of an adapter. It is a figure which shows the adapter which concerns on 2nd Embodiment of this invention, (a) is a front view, (b) is a top view, (c) is a bottom view, (d) is side sectional drawing, (e) is plane sectional drawing (F) is a side view, (g) is a rear view, (h) is a side sectional view showing a mounting state to a fixing member, and (i) is a plan view. It is a front view which shows the adapter shown in FIG. 9, and the optical fiber inserted in this. It is a figure which shows the adapter which concerns on 3rd Embodiment of this invention, (a) is a front view, (b) is a side view, (c) is a plane sectional view, (d) is a side sectional view, (e) is a back surface (F) is a bottom view, and (g) is a bottom cross-sectional view showing a mounting state to a fixing member. (A) is a front view which shows the connector part of an optical fiber, (b) is a bottom view similarly.

  1: Adapter, 2: Signal cable, 3: Connector, 5: Fixing member, 15: Fitting groove, 16: Fitting protrusion, 18: Second fitting groove, 20: Lock member, 30: Adapter, 31 : Connector connecting portion, 32: fitting protrusion, 33: locking claw, 35: engaging leg, 50: fixing member, 51: fitting groove, 52: notch engaging portion, 55: locking groove, 60, 70 : Optical fiber

Claims (1)

An adapter / fixing member mounting structure comprising: an adapter for connecting signal cable connectors to a fixing member;
(B) The adapter is attachable to and detachable from the fixing member. (B) A fitting groove is formed on the surface of the fixing member, and a fitting protrusion that is slidably fitted into the fitting groove on the bottom surface of the adapter. (C) The engaging projections are formed with elastically bent locking claws (d) A notch engaging part is formed in the engaging groove. (E) When the fitting protrusion slide-fits into the fitting groove, the engaging claw of the adapter engages with the notch engaging portion, and the fitting from the fitting groove Being a configuration that regulates the free removal of the mating protrusion
(F) The fitting protrusions are two engaging legs having springiness provided by protruding from the outer back part of the adapter, and the tips of the engaging legs are curved in a hook shape. The intermediate portion of the leg portion can be flexibly bent in the width direction of the adapter, and the hook-shaped tip portion can be bent in the height direction of the adapter.
(G) The fitting groove is two locking grooves formed side by side on the surface of the fixing member, and the hook-like portions of the engaging leg portions formed on the adapter are fitted into the locking groove from one end and slid. It is the structure which forms an engagement state by

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