JP2016090760A - Optical connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical connector which can improve assembling workability, and an optical connector which can suppress variations in coupling between optical connectors and improve reliability of a system link.SOLUTION: In an optical connector 1, an engaging portion 26 which protrudes convexly from one end, in an optical-axis direction of an optical fiber 3, of a stationary member 9 is formed in the stationary member 9, and an engaged portion 20 is arranged in a housing 7. In addition, a second engaging portion 27 is arranged on the other end side, in the optical-axis direction of the optical fiber 3a, of the stationary member 9, and a second engaged portion 21 is arranged in the housing 7. Further, when the engaging portion 26 is engaged with the engaged portion 20 and the second engaging portion 27 is engaged with the second engaged portion 21 in a tentative engagement condition in which the stationary member 9 is press fitted into and held in a fitting portion 18 of the housing 7, a real engagement condition is achieved.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an optical connector in which an optical fiber is held in a housing.

Conventionally, in order to reduce noise generated from an electric wire used for communication between electrical components of an automobile, it is conceivable to use an optical fiber instead of the electric wire. This optical fiber is optically connected by the fitting structure of the optical connector.
The optical connector fitting structure optically connects the optical fibers of each optical connector by fitting two optical connectors holding optical fibers in a housing.

As the optical connector, for example, a technique disclosed in Patent Document 1 has been used.
As illustrated in FIGS. 16 and 17, the optical connector 100 disclosed in Patent Document 1 includes a housing 101, an optical fiber cable 102, a leaf spring 103, and a fixing member 104. .
The optical fiber cable 102 has a ferrule 106 attached to the tip of a pair of optical fibers 105.

As shown in FIG. 16, the housing 101 includes a housing fitting portion 109 and a ferrule housing portion 110.
As shown in FIG. 16, the housing fitting portion 109 is formed as a portion that fits into an optical connector (not shown) that is a mating partner.
Further, as shown in FIG. 17, the ferrule housing part 110 is connected to a housing fitting part 109, and includes two ferrule holding housing chambers 111 for holding and housing the ferrule 106 (see FIG. 16) of the optical fiber cable 102. It is formed including. Engaged portions (not shown) are provided on both the left and right inner surfaces of the rear end side of the ferrule housing portion 110 in the optical axis direction of the optical fiber 105. The engaged portion is provided as a portion with which an engaging portion 108 (see FIG. 16) described later is engaged.
Further, a mounting portion 112 is formed on the lower surface of the housing 101 as shown in FIG. The mounting portion 112 is formed to communicate with the ferrule housing portion 110 and is provided as a portion for mounting the fixing member 104.

  As shown in FIG. 16, standing protrusions 107 are provided on the left and right sides of the rear end side of the fixing member 104 in the optical axis direction of the optical fiber 105. The standing protrusions 107 are formed such that their tips can be elastically displaced, and are provided with engaging portions 108 respectively. The standing protrusions 107 are provided so that the respective engaging portions 108 engage with engaged portions formed on the housing 101.

Next, a procedure for assembling the fixing member 104 to the housing 101 will be described.
First, the worker houses the ferrules 106 attached to the pair of optical fibers 105 in the ferrule housing unit 110.
Then, the operator inserts the fixing member 104 shown in FIG. 16 into the mounting portion 112 of the housing 101 shown in FIG. Then, the engaging portion 108 of the fixing member 104 is engaged with the engaged portion of the housing 101. As a result, the fixing member 104 is attached to the attachment portion 112 of the housing 101 as shown in FIG. Thus, the assembly of the fixing member 104 to the housing 101 is completed.
Thus, the fixing member 104 assembled to the housing 101 supports the ferrule 106 attached to the pair of optical fibers 105 from below. Therefore, the fixing member 104 positions the ferrule 106 in the ferrule housing portion 110 and can prevent the ferrule 106 from dropping from the housing 101.

JP 2012-150424 A

In the optical connector 100 as disclosed in Patent Document 1, the optical fiber 105 may be pulled in the optical axis direction of the optical fiber 105 while the fixing member 104 is attached to the housing 101. When the optical fiber 105 is pulled in the optical axis direction, the fixing member 104 may move.
As described above, when the fixing member 104 moves, the fixing member 104 may come off the housing 101 and fall, and the fixing member 104 may be damaged. For this reason, there existed a problem that the assembly | attachment workability | operativity which assembles the fixing member 104 without damage was bad.

Further, in the optical connector 100, engaging portions 108 are provided on both the left and right side portions on the rear end side of the fixing member 104 in the optical axis direction of the optical fiber 105. Accordingly, when the fixing member 104 is mounted on the mounting portion 112 of the housing 101, the fixing member 104 supports the entire fixing member 104 on the rear end side. As described above, when the fixing member 104 is mounted on the mounting portion 112 of the housing 101, the distal end side of the fixing member 104 is not fixed to the housing 101.
When such an optical connector 100 receives an impact from the outside, the distal end side of the fixing member 104 may fall downward as shown in FIG. Thus, when the front end side of the fixing member 104 falls downward, the fixing member 104 may hang down from the mounting portion 109 of the housing 101 in some cases. That is, even with such a problem, there is a problem that the assembling workability for assembling the fixing member 104 to the housing 101 is deteriorated.

Further, in the optical connector 100, as described above, since the engaging portions 108 are provided on the left and right side portions on the rear end side of the fixing member 104 in the optical axis direction of the optical fiber 105, the fixing member 104 is disposed in the housing. When the fixing member 104 is attached to the attachment portion 112 of 101, the distal end side of the fixing member 104 is not fixed to the housing 101.
In such an optical connector 100, the distal end side of the fixing member 104 may flutter after the fixing member 104 is assembled to the housing 101. As described above, when the front end side of the fixing member 104 flutters, the ferrule 106 positioned by the fixing member 104 may flutter. When the ferrule 106 flutters, the pair of optical fibers 105 to which the ferrule 106 is attached also flutters. As described above, when the optical fiber 105 flutters, coupling variation between optical connectors may increase. For this reason, there has been a problem that communication on the system link is not established.

The present invention has been made in view of the above circumstances, and one object is to provide an optical connector that can improve the assembly workability.
Another object is to provide an optical connector that can prevent coupling variations between optical connectors and improve the reliability of the system link.

  The optical connector of the present invention according to claim 1, which has been made to solve the above-mentioned problem, is provided separately from the housing for holding the optical fiber and the housing, and the optical fiber is attached to the housing by assembling the optical fiber. A fixing member that is fixed to the housing, and an engaging portion that protrudes in a convex shape from the one end of the optical fiber in the optical axis direction is formed on the fixing member, and the engagement is formed in the housing. An engaged portion is provided to engage the portion, and the fixing member is engaged with the housing by changing the engagement state from the temporary engagement state to the main engagement state.

  In the present invention having such a feature, after the fixing member is temporarily engaged with the housing, the engaging portion of the fixing member is engaged with the engaged portion of the housing to be in the main engaging state.

  The optical connector according to a second aspect of the present invention is the optical connector according to the first aspect, wherein the fixing member is engaged with the housing at the other end side in the optical axis direction of the optical fiber. A temporary engagement state in which a second engaged portion that engages the second engaging portion is provided in the housing, and the fixing member is press-fitted and held in the mounting portion of the housing. The engagement portion is engaged with the engaged portion, and the second engagement portion is engaged with the second engaged portion, thereby being engaged in the main engagement state. To do.

  The present invention having such a feature can be in a temporary engagement state in which the fixing member is press-fitted and held in the mounting portion of the housing. Then, the engagement portion is engaged with the engaged portion, and the second engagement portion is engaged with the second engaged portion, thereby changing from the temporary engagement state to the final engagement state. To do.

  The optical connector according to a third aspect of the present invention is the optical connector according to the first or second aspect, wherein the engaging portion has a radius smaller than a thickness of a portion of the fixing member where the engaging portion is provided. It is characterized by having a hemispherical shape.

  In the present invention having such a feature, the engaging portion can be formed in a hemispherical shape having a radius smaller than the thickness of the portion of the fixing member where the engaging portion is provided.

  The optical connector according to a fourth aspect of the present invention is the optical connector according to the first or second aspect, wherein the engaging portion has a radius smaller than a thickness of a portion of the fixing member where the engaging portion is provided. The tip is formed in a cylindrical shape, and the tip is formed in a spherical shape.

  In the present invention having such a feature, the engaging portion can be formed in a cylindrical shape having a radius smaller than the thickness of the portion of the fixing member where the engaging portion is provided, and the tip can be formed in a spherical shape. .

  The optical connector of the present invention according to claim 5 is the optical connector according to claim 1 or 2, wherein the engaging portion has a radius smaller than a thickness of a portion of the fixing member where the engaging portion is provided. The tip is formed in a substantially conical shape, and the tip is formed in a spherical shape.

  In the present invention having such a feature, the engaging portion is formed in a substantially conical shape having a radius smaller than the thickness of the portion of the fixing member where the engaging portion is provided, and the tip is formed in a spherical shape. it can.

  An optical connector according to a sixth aspect of the present invention is the optical connector according to the first, second, third, fourth, or fifth aspect, wherein the housing is engaged with the optical fiber, and the optical fiber extends from the housing. An optical fiber locking portion for preventing the optical fiber from coming off in the optical axis direction is provided.

  In the present invention having such a feature, the optical fiber locking portion provided in the housing is engaged with the optical fiber, and the optical fiber is prevented from coming out of the housing in the optical axis direction.

  According to the first aspect of the present invention, the fixing member can be temporarily engaged with the housing. If it does so, even if an optical fiber is pulled in the middle of mounting | wearing a fixing member to a housing, a fixing member does not remove | deviate from a housing. For this reason, the fixing member does not fall from the housing and is not damaged. Therefore, it is possible to improve the assembling workability for assembling the fixing member without damage as compared with the prior art.

According to the second aspect of the present invention, when the fixing member is in the temporarily engaged state, the fixing member is press-fitted and held in the mounting portion of the housing. Therefore, even if the optical fiber is pulled while the fixing member is attached to the housing, the fixing member can be more reliably prevented from being detached from the housing.
Further, according to the present invention, when the fixing member is in the main engagement state, the engaging portion formed on one end side of the fixing member in the optical axis direction of the optical fiber engages with the engaged portion of the housing, A second engaging portion formed on the other end side of the fixing member in the optical axis direction of the optical fiber engages with the second engaged portion of the housing. For this reason, even if the optical connector receives an external impact, one of the one end and the other end of the fixing member in the optical axis direction of the optical fiber does not fall down and hang down from the mounting portion of the housing.
Therefore, it is possible to improve the assembling workability for assembling the fixing member to the housing more reliably.
Furthermore, according to the present invention, when the fixing member is in the fully engaged state, the one end side and the other end side of the fixing member in the optical axis direction of the optical fiber can be engaged with the housing. Therefore, even if the optical connector receives an impact from the outside, one end side or the other end side of the fixing member in the optical axis direction of the optical fiber does not fall downward, and the fixing member is securely attached to the mounting portion of the housing. Can be assembled to. By doing so, the optical fiber can be reliably fixed to the housing by the fixing member. From this, fluttering of the optical fiber and optical axis deviation can be prevented. Therefore, it is possible to prevent variations in coupling between the optical connectors and improve the reliability of the system link.

  According to the third aspect of the present invention, the engaging portion is formed in a hemispherical shape having a radius smaller than the thickness of the portion of the fixing member where the engaging portion is provided. This facilitates the assembly of the fixing member to the housing. Therefore, it is possible to further improve the assembling workability for assembling the fixing member to the housing.

  According to the fourth aspect of the present invention, the engaging portion is formed in a cylindrical shape having a radius smaller than the thickness of the portion of the fixing member where the engaging portion is provided, and the tip is formed in a spherical shape. The This facilitates the assembly of the fixing member to the housing. Therefore, it is possible to further improve the assembling workability for assembling the fixing member to the housing.

  According to the fifth aspect of the present invention, the engaging portion is formed in a substantially conical shape having a radius smaller than the thickness of the portion of the fixing member where the engaging portion is provided, and the tip is formed in a spherical shape. Is done. This facilitates the assembly of the fixing member to the housing. Therefore, it is possible to further improve the assembling workability for assembling the fixing member to the housing.

  According to the sixth aspect of the present invention, the optical fiber locking portion provided in the housing can be engaged with the optical fiber, and the optical fiber can be prevented from coming off from the housing in the optical axis direction. Thus, fluttering of the optical fiber and deviation of the optical axis can be prevented more reliably. Therefore, it is possible to more reliably prevent the coupling variation between the optical connectors and to further improve the reliability of the system link.

It is a disassembled perspective view which shows Example 1 of the 1st optical connector of this invention. It is the perspective view which looked at the 1st housing from diagonally back. It is the perspective view which looked at the 1st fixing member from diagonally forward. It is sectional drawing which shows the state before attaching a 1st fixing member to a 1st housing. It is sectional drawing which illustrates the state which temporarily engaged the 1st fixing member with the 1st housing. It is sectional drawing which shows the state which carried out the main engagement of the 1st fixing member with the 1st housing. It is a disassembled perspective view of a 2nd optical connector. It is the perspective view which looked at the 2nd housing from diagonally back. It is the perspective view which looked at the 2nd fixing member from diagonally back. (A) is sectional drawing which illustrates the state which temporarily engaged the 2nd fixing member with the 2nd housing, (b) is sectional drawing which illustrates the state which the 2nd fixing member was fully engaged with the 2nd housing. It is sectional drawing of the fitting structure of an optical connector when a 1st optical connector and a 2nd optical connector start fitting with the 2nd fixing member in a temporary engagement state. It is sectional drawing of the fitting structure of the optical connector in the state where the 1st optical connector and the 2nd optical connector started fitting. (A) is a perspective view of the front-end | tip part of the 1st fixing member in Example 2 of the 1st optical connector of this invention, (b) is sectional drawing between FF of the engaging part shown to (a). . (A) is a perspective view of the front-end | tip part of the 1st fixing member in Example 3 of the 1st optical connector of this invention, (b) is GG sectional drawing of the engaging part shown to (a). . It is a cross-sectional perspective view which shows Example 4 of the 1st optical connector of this invention. It is a disassembled perspective view of a prior art example. FIG. 17 is a cross-sectional perspective view taken along the line H-H when each member is assembled to the housing illustrated in FIG. 16. It is sectional drawing of the optical connector for demonstrating the trouble of a prior art example.

  Hereinafter, an optical connector according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 12, and an optical connector according to a second embodiment of the present invention will be described with reference to FIG.

1 to 12 show an optical connector according to a first embodiment of the present invention.
1 is an exploded perspective view showing a first optical connector according to a first embodiment of the present invention, FIG. 2 is a perspective view of the first housing shown in FIG. 1 viewed obliquely from the rear, and FIG. 3 is a perspective view of the first fixing member. 4 is a cross-sectional view taken along the line A-A in FIG. 1, and is a cross-sectional view showing a state before the first fixing member is assembled to the first housing. FIG. 5 is a first fixing member attached to the first housing. FIG. 6 is a sectional view showing a state where the first fixing member is fully engaged with the first housing, FIG. 7 is an exploded perspective view of the second optical connector, and FIG. FIG. 9 is a perspective view of the second housing shown in FIG. 7 as viewed obliquely from the rear, FIG. 9 is a perspective view of the second fixing member illustrated in FIG. 7 as viewed from obliquely rear, and FIG. 10 is a cross-sectional view between B and B in FIG. (A) is sectional drawing which illustrates the state which temporarily engaged the 2nd fixing member with the 2nd housing, (a) is the 2nd how FIG. 11 is a cross-sectional view illustrating a state in which the second fixing member is fully engaged with the first locking member, and FIG. 11 illustrates light when the first optical connector and the second optical connector start fitting with the second fixing member temporarily engaged. FIG. 12 is a cross-sectional view of the optical connector fitting structure in a state in which the first optical connector and the second optical connector have started fitting.
In addition, the arrow in a figure has shown each direction of front and back, up and down, and right and left (each direction of an arrow shall be an example).

FIG. 1 shows the first optical connector 1, and FIG. 7 shows the second optical connector 2.
The optical connector fitting structure according to the embodiment of the present invention is configured by fitting the first optical connector 1 and the second optical connector 2, and is provided in the first optical connector 1 by this fitting structure. The first optical fiber 3 (see FIG. 1) and the second optical fiber 4 (see FIG. 7) provided in the second optical connector 2 are optically connected.

First, the first optical connector 1 will be described.
As shown in FIG. 1, the first optical connector 1 includes a pair of first optical fibers 3 having a ferrule 5 attached to the tip, a first housing 7, and a first fixing member 9. Yes.

The first optical fiber 3 is made of a light guide material and is realized by a so-called multimode plastic optical fiber. The first optical fiber 3 is doubly covered by a covering portion made of an insulating synthetic resin, and is exposed by peeling off the covering portion at the tip as shown in FIG.
The ferrule 5 is a cylindrical metal member that holds the tip of the first optical fiber 3 with a through hole.

  The first housing 7 is made of an insulating material such as a synthetic resin. As shown in FIGS. 1 and 2, each of the first housings 7 is fitted to the second optical connector 2 (see FIG. 7). A ferrule housing portion 12 including two ferrule holding housing chambers 13 for holding and housing the ferrule 5 of the first optical fiber 3.

As shown in FIGS. 1 and 2, the first housing fitting portion 11 has a substantially rectangular parallelepiped shape, and a split sleeve 35 to which a ferrule 6 of each second optical fiber 4 to be described later is attached can be inserted on the front surface. Two sleeve insertion holes 14 are formed. Each sleeve insertion hole 14 communicates with each ferrule holding accommodation chamber 13.
Further, when the first optical connector 1 and the second optical connector 2 are fitted, the first housing fitting portion 11 is fitted by abutting against a fitting direction protruding wall portion 61 of the second fixing member 10 described later. A guide groove 15 for guiding the fitting direction protruding wall portion 61 is formed so as to prevent movement in the direction.

The guide groove 15 corresponds to the position of the fitting direction projecting wall portion 61 of the second fixing member 10 that is permanently locked to the second housing 8 described later, and is provided at the lower portion of the first housing fitting portion 11 from the front end surface to the rear. It is the groove | channel extended toward.
The guide groove 15 includes a pair of groove inner side surfaces 16 facing both side surfaces of the fitting direction protruding wall portion 61 and a groove bottom surface 17 facing the lower surface of the fitting direction protruding wall portion 61.
For this reason, if the area of the portion where the pair of groove inner side surfaces 16 and the groove bottom surface 17 overlap the fitting direction protruding wall portion 61 is increased, the second fixing member 10 is forcibly fitted in the temporarily engaged state. The load at the time of joining can be increased, and it becomes easy to detect that the second fixing member 10 is in the temporarily engaged state.
For example, the provisional engagement preventing wall portion 53 at the time of temporary engagement has a range in which the load applied when the second fixing member 10 is fitted in the temporary engagement state is not less than twice and not more than three times the load related to the main engagement state. The area of the portion that overlaps the first housing 7 may be adjusted so that the fitting is completed.

As shown in FIGS. 1 and 2, the ferrule housing portion 12 has a box shape, and a mounting portion 18 is formed in the lower surface on the side where the first fixing member 9 is assembled. Two insertion openings 19 are formed so that they can be inserted from the rear.
Further, the first housing 7 temporarily engages the engaged portion 20 (see FIGS. 4 to 6) that engages the first fixing member 9 in the temporary engagement state and the main engagement state, and the first fixing member 9. And a pair of second engaged portions 21 that are engaged in the combined state and the main engagement state.

As shown in FIGS. 4 to 6, the engaged portion 20 is formed in a concave shape on the inner wall 34 on the distal end side in the optical axis direction of the first optical fiber 3 in the ferrule housing portion 12 of the first housing 7.
In the present embodiment, the cross section is formed in a substantially arc shape so that an engaging portion 26 of the first fixing member 9 described later can be engaged.

Each second engaged portion 21 has a part of one side wall 22 of the first housing 7 formed on two engaging protrusions 29 adjacent to three engaging protrusions 29 described later of the first fixing member 9. It is the part formed in the width | variety which can be clamped.
More specifically, the second engaged portion 21 is formed on the upper inner edge surface of the opening 24 and the upper side of the side wall 22 by forming the opening 24 at a predetermined interval from the lower end surface of the side wall 22. It consists of a wall which makes an end surface the surface pinched by the two engagement protrusion parts 29. FIG.
In addition, the opening 24 adjusts the width in the front-rear direction so that each engagement projection 29 fits inside, and from the engagement projection 29 at the distal end to the engagement projection 29 at the proximal end in the vertical direction. Adjust the vertical width to fit inside.

As shown in FIGS. 1 and 3, the first fixing member 9 is provided separately from the first housing 7, and is engaged with the first housing 7 from the temporarily engaged state to the fully engaged state. It is a fixing member that fixes the first optical fiber 3 to the first housing 7 by changing the state and assembling.
The first fixing member 9 is made of an insulating material such as a synthetic resin, and includes a bottom wall 25 that constitutes a main body portion, an engaging portion 26, and a pair of second engaging portions 27.
The bottom wall 25 has an outer rectangular shape corresponding to the shape of the mounting portion 19 so as to cover the mounting portion 19 of the ferrule housing portion 12. On the upper surface of the bottom wall 25, a wall portion 33 is formed so as to protrude.
The wall 33 is provided so that the length direction extends from the middle of the edge of the tip of the bottom wall 25 to the vicinity of the center of the bottom wall 25 along the optical axis direction of the first optical fiber 3. The front end 64 of the wall 33 corresponds to a “portion where the engaging portion is provided” in the claims.

The engaging portion 26 is a portion that engages with the engaged portion 20 of the first housing 7, and the engaging portion 26 is convex from the distal end surface of the wall portion 33 in the optical axis direction of the first optical fiber 3. Protrusively formed.
The engaging portion 26 has a hemispherical shape and is formed to have a radius smaller than the thickness of the tip 64 of the wall portion 33 where the engaging portion 26 is formed.
Specifically, the engaging portion 26 is formed in a hemispherical shape having a radius that is less than ¼ of the vertical thickness of the tip 64 of the wall portion 33.

  The pair of second engaging portions 27 are portions that engage with the pair of second engaged portions 21 of the first housing 7, and each second engaging portion 27 is a rear end of the bottom wall 25. It is formed so as to protrude in an elastic piece shape upward from the side end portion on the side.

The second engaging portion 27 includes an elastic protruding piece portion 28 protruding in an elastic piece shape upward from a side end portion on the rear end side of the bottom wall 25, and a base along the protruding direction of the elastic protruding piece portion 28. An end portion, a distal end portion, and three engaging projections 29 projecting outwardly between the proximal end portion and the distal end portion.
In the following description, the three engagement protrusions 29 are described separately, the engagement protrusion 29 at the distal end is the distal engagement protrusion 30, the intermediate engagement protrusion 29 is the intermediate engagement protrusion 31, and the base engagement protrusion 29. The engagement protrusions 29 at the ends are referred to as proximal engagement protrusions 32, respectively.

The three engaging protrusions 29 are formed so that the interval between the adjacent engaging protrusions 29 is adjusted to be the vertical width of the second engaged portion 21.
For this reason, the first fixing member 9 is temporarily engaged with the first housing 7 so that the second engaged portion 21 is sandwiched between the tip engaging protrusion 30 and the intermediate engaging protrusion 31. .
Further, the first fixing member 9 is fully engaged with the first housing 7 so as to sandwich the second engaged portion 21 between the intermediate engaging protrusion 31 and the base end engaging protrusion 32. .
That is, the first fixing member 9 uses the intermediate engagement protrusion 31 and the proximal engagement protrusion 32 from the temporary engagement state using the distal end engagement protrusion 30 and the intermediate engagement protrusion 31. The first housing 7 can be engaged by changing to the engaged state.

Here, the procedure for assembling the first fixing member 9 to the first housing 7 and the operation of each part will be described.
First, the worker accommodates each ferrule 5 attached to the pair of first optical fibers 3 illustrated in FIG.
Then, the operator assembles the first fixing member 9 from the lower side of the first housing 7 toward the mounting portion 18 on the lower surface of the first housing 7 in the direction indicated by the arrow B in FIG.

  Thereafter, the operator press-fits the first fixing member 9 into the mounting portion 18 of the first housing 7 as shown in FIG. Then, the engaging portion 26 of the first fixing member 9 abuts on the inner wall 34 of the mounting portion 18, and the tip engaging protrusion 30 and the intermediate engaging protrusion 31 shown in FIG. In the meantime, the first fixed member 9 is temporarily engaged with the first housing 7 as shown in FIG. 5 so as to sandwich the second engaged portion 21 shown in FIG.

Thereafter, the operator pushes the first fixing member 9 in the direction shown by the arrow C in FIG. Then, as shown in FIG. 6, the engaging portion 26 of the first fixing member 9 engages with the engaged portion 20 of the first housing 7, and the intermediate engagement shown in FIG. 3 of the first fixing member 9. The first fixed member 9 is attached to the first housing 7 so as to sandwich the second engaged portion 21 shown in FIG. 2 between the mating projection portion 31 and the base end engagement projection portion 32. Set to the engaged state.
Thus, the assembly of the first fixing member 9 to the first housing 7 is completed.

Next, the second optical connector 2 will be described.
As shown in FIG. 7, the second optical connector 2 includes a pair of second optical fibers 4 having ferrules 6 attached to the ends, a second housing 8, a second fixing member 10, and a pair of optical fibers 4. The two split sleeves 35 and the spring member 36 provided in correspondence are provided.

  The second optical fiber 4 is made of a light guide material like the first optical fiber 3 and is realized by a so-called multimode plastic optical fiber.

  The second housing 8 is made of an insulating material such as a synthetic resin. As shown in FIGS. 7 and 8, the second housing fitting portion 37 that fits the first optical connector 1 and each second optical fiber 4. A ferrule housing portion 38 including two ferrule holding and housing chambers 39 for holding and housing the ferrule 6.

The second housing fitting portion 37 is formed in a box shape having a rectangular fitting inlet corresponding to the cross-sectional shape of the first housing fitting portion 11 described later of the first housing 7, and is shown in FIGS. 1 and 2. The first housing fitting portion 11 of the illustrated first housing 7 is fitted.
In the second housing fitting portion 37, a fitting engagement prevention wall portion 53, which will be described later of the second fixing member 10, is disposed in the second housing fitting portion 37 at the end portion on the ferrule housing portion 38 side of the upper wall 40. An insertion slit 42 that is open so as to be inserted is formed.

  The ferrule housing portion 38 includes a mounting portion 43 on the upper surface on which the second fixing member 10 is assembled, and a box shape in which the rear wall 63 includes two insertion ports 44 so that each ferrule 6 can be inserted from the rear. It is formed into a shape.

In addition, the second housing 8 has a pair of engaged portions 45 that temporarily engage and fully engage the second fixing member 10.
Each engaged portion 45 of the second housing 8 has two engaging protrusions adjacent to three engaging protrusions 56 (to be described later) of the second fixing member 10 on a part of one side wall 46 of the second housing 8. 23 is a portion formed in a width that can be sandwiched between the two.
More specifically, the engaged portion 45 forms an opening 47 at a predetermined interval from the upper end surface of the side wall 46, thereby forming an upper inner edge surface of the opening 47 and an upper end surface of the side wall 46. It consists of a wall as a surface sandwiched between two engaging projections 56.
Further, the opening 47 adjusts the width in the front-rear direction so that each engagement projection 56 is accommodated inside, and from the engagement projection 56 at the distal end to the engagement projection 56 at the base end in the vertical direction. Adjust the vertical width to fit inside.
In the case where an engaged portion (not shown) is provided at a predetermined position (for example, a portion indicated by an arrow D shown in FIG. 7) on the inner surface of the rear wall 63 of the second housing 8, this engaged portion Corresponds to the “second engaged portion” in the claims.

  Further, in the partition wall 48 that divides the second housing fitting portion 37 and the ferrule housing portion 38, the tip of each ferrule 6 accommodated in each ferrule holding and housing chamber 39 can protrude toward the second housing fitting portion 37 side. Two formed insertion holes 49 and a guide slit 50 that guides the fitting prevention wall portion 41 during temporary engagement downward toward the insertion slit 42 are provided.

  The second housing 8 may be provided with an engaged portion (not shown) formed in a concave shape at a predetermined position (for example, a portion indicated by an arrow D shown in FIG. 7) on the inner surface of the rear wall 63. And

As shown in FIG. 7, the second fixing member 10 is provided separately from the second housing 8, and changes the engagement state from the temporary engagement state to the full engagement state with respect to the second housing 8. It is a fixing member that fixes the second optical fiber 4 to the second housing 8 by being assembled.
The second fixing member 10 is made of an insulating material such as a synthetic resin. As shown in FIG. 9, the second fixing member 10 includes a ceiling wall 51 constituting a main body portion, a pair of engaging portions 52, and a fitting prevention at the time of temporary engagement. The wall part 53 and the 2nd optical fiber fixed wall part 54 are provided.

  The ceiling wall 51 is formed in a rectangular shape corresponding to the shape of the mounting portion 43 so as to cover the mounting portion 43 of the second housing 8 shown in FIG.

The pair of engaging portions 52 are portions that engage with the pair of engaged portions 45 of the second housing 8 illustrated in FIG. 8, and each engaging portion 52 is in the optical axis direction of the second optical fiber 4. The ceiling wall 51 is formed so as to protrude in an elastic piece shape downward from the side end portion on the front end side.
When an engaging portion (not shown) is provided at a predetermined position (for example, a portion indicated by an arrow E shown in FIG. 9) on the outer surface of the second optical fiber fixing wall portion 54 to be described later, a pair of engagements is provided. The joint portion 52 corresponds to a “second engagement portion” in the claims.

The engaging portion 52 includes an elastic protruding piece portion 55 that protrudes downward from the side end portion on the distal end side of the ceiling wall 51 in an elastic piece shape, and a proximal end portion and a distal end portion along the protruding direction of the elastic protruding piece portion 55. And three engaging projections 56 projecting outwardly between the base end and the distal end.
In the following description, the three engaging protrusions 56 will be described separately, the engaging protrusion 56 at the distal end is the distal engaging protrusion 57, the intermediate engaging protrusion 56 is the intermediate engaging protrusion 58, and the base engaging protrusion 56. The engagement protrusions 56 at the ends are referred to as proximal end locking protrusions 59, respectively.

The three engaging protrusions 56 are adjusted so that the interval between the adjacent engaging protrusions 56 is the vertical width of the engaged part 45.
For this reason, the second fixing member 10 is temporarily engaged with the second housing 8 so that the engaged portion 45 is sandwiched between the tip engaging protrusion 57 and the intermediate engagement protrusion 58.
Further, the second fixing member 10 is fully engaged with the second housing 8 so as to sandwich the engaged portion 45 between the intermediate engaging protrusion 58 and the base end engaging protrusion 59.
That is, the second fixing member 10 uses the intermediate engagement projection 58 and the base engagement projection 59 from the temporary engagement state using the distal end engagement projection 57 and the intermediate engagement projection 58. The second housing 8 can be engaged by being changed to the engaged state.

As shown in FIG. 7, the provisional engagement preventing wall portion 53 includes a base portion 60 projecting downward from an end portion of the ceiling wall 51 on the second housing fitting portion 37 side, and a lower end of the base portion 60. And a fitting direction projecting wall portion 61 projecting toward the second housing fitting portion 37.
The fitting direction protruding wall portion 61 is positioned so as to protrude toward the second housing fitting portion 37 in a state where the second fixing member 10 is temporarily engaged and fully engaged with the second housing 8.
Therefore, when the second fixing member 10 is engaged with the second housing 8, the fitting direction protruding wall portion 61 is inserted into the insertion slit 42 and also passes through the guide slit 50 and the second housing fitting portion 37. It is supposed to move in.

The second optical fiber fixing wall portion 54 is formed so as to protrude downward from the rear end of the ceiling wall 51 and includes two insertion grooves 62 formed so that the second optical fiber 4 can be inserted.
The second optical fiber fixing wall portion 54 has an engaging portion (not shown) at a predetermined position (for example, a portion indicated by an arrow E shown in FIG. 9) on the outer surface of the second optical fiber fixing wall portion 54. May be provided. The portion of the second optical fiber fixing wall portion 54 where the engaging portion is formed corresponds to the “portion where the engaging portion is provided” in the claims.
The engaging portion is a portion that engages with the engaged portion of the second housing 8, and the engaging portion is convex in the optical axis direction of the second optical fiber 4 from the outer surface of the second optical fiber fixing wall portion 54. Is formed to protrude.
The engaging portion has a hemispherical shape and is formed to have a radius smaller than the thickness of the second optical fiber fixing wall portion 54 where the engaging portion is formed.
Specifically, the engaging portion is formed in a hemispherical shape having a radius less than ¼ of the thickness of the second optical fiber fixing wall portion 54.

The split sleeve 35 is formed by inserting the tips of the ferrule 5 attached to the first optical fiber 3 and the ferrule 6 attached to the second optical fiber 4 into the cylinder, so that the first optical fiber 3 and the second optical fiber are inserted. 4 is a member for aligning 4.
The split sleeve 35 is a cylindrical elastic member, and is formed to expand in accordance with the diameters of the ferrule 5 and the ferrule 6 by forming a slit extending from one end to the other end at one place in the circumferential direction. .

The spring member 36 is attached to the second housing 8 together with the second fixing member 10 while being attached to the second fixing member 10, thereby attaching each ferrule 6 housed in the ferrule housing portion 38 to the first optical connector 1 side. It is a force.
With such a spring member 36, each ferrule 5 of the first optical fiber 3 and the corresponding ferrule 6 of the second optical fiber 4 and the light in the connector fitting state of the first optical connector 1 and the second optical connector 2. It is designed to face each other while maintaining a predetermined interval necessary for connection.

Here, the procedure for assembling the second fixing member 10 to the second housing 8 and the operation of each part will be described.
First, the worker accommodates the ferrules 6 attached to the pair of second optical fibers 4 in the ferrule housing part 38.

Then, the worker temporarily engages the second fixing member 10 with the spring member 36 attached to the second housing 8 as shown in FIG. In addition, when the engaging part is formed in the 2nd optical fiber fixed wall part 54 of the 2nd fixing member 10, in this temporary engagement state, the 2nd optical fiber fixed wall part 54 of the 2nd fixing member 10 The engaging portion comes into contact with the inner surface of the rear wall 63.
In this temporary engagement state, the fitting-direction protruding wall portion 61 of the provisional engagement preventing wall portion 53 at the time of temporary engagement is positioned so as to abut against the first connector housing 7 that is fitted into the second housing fitting portion 37. ing.

Thereafter, the operator fully engages the second fixing member 10 with the second housing 8 as shown in FIG. When the engaging portion is formed on the second optical fiber fixing wall portion 54 of the second fixing member 10 and the engaged portion is formed on the rear wall 63 of the second housing 8, this fully engaged state , The engaging portion of the second optical fiber fixing wall portion 54 of the second fixing member 10 contacts the engaged portion of the rear wall 63.
Thus, the assembly of the second fixing member 10 to the second housing 8 is completed.

Next, the procedure for fitting the first optical connector 1 and the second optical connector 2 and the operation of each part will be described.
As shown in FIG. 11, when the second fixing member 10 of the second optical connector 2 is temporarily engaged and the first housing fitting portion 11 is fitted into the second housing fitting portion 37, the first housing fitting is performed. Before the joining portion 11 reaches the fitting completion position in the second housing fitting portion 37, it is abutted against the fitting direction protruding wall portion 61, and the movement of the first optical connector 1 is prevented.
For this reason, the 1st optical connector 1 and the 2nd optical connector 2 cannot be fitted, and the operator can know that the 2nd fixing member 10 is a temporary engagement state.
Therefore, the operator engages the second fixing member 10 with the second housing 8 and then inserts the first housing fitting portion 11 into the second housing fitting portion 37 again.

  When the second fixing member 10 of the second optical connector 2 is in the main engagement state and the first housing fitting portion 11 is fitted into the second housing fitting portion 37, the fitting direction protruding wall portion 61 is fitted in the first housing fitting. Since it is guided into the guide groove 15 of the joint portion 11, the fitting direction protruding wall portion 61 does not prevent the movement of the first optical connector 1 and the second optical connector 1 and the second optical connector 1 as shown in FIG. The optical connector 2 is fitted.

  In the description of this procedure, an example in which the operator manually fits the first optical connector 1 and the second optical connector 2 has been described. However, the present invention is not limited to this, and the first light is used by using an automatic machine or the like. The connector 1 and the second optical connector 2 may be fitted. In this case, the automatic machine may detect that the second fixing member 10 is in the temporarily engaged state and notify the abnormality when the load applied when fitting is greater than or equal to a predetermined value.

As described above with reference to FIGS. 1 to 12, according to the optical connector of the present invention, the fixing members 9 and 10 can be temporarily engaged with the housings 7 and 8. Then, even if the optical fibers 3 and 4 are pulled in the middle of mounting the fixing members 9 and 10 to the housings 7 and 8, the fixing members 9 and 10 are not detached from the housings 7 and 8. Therefore, the fixing members 9 and 10 are not dropped from the housings 7 and 8 and are not damaged.
Therefore, it is possible to improve the assembling workability for assembling the fixing members 9 and 10 without damage as compared with the prior art.

Further, according to the optical connector of the present invention, when the fixing members 9 and 10 are temporarily engaged, the fixing members 9 and 10 are press-fitted and held in the mounting portions 18 and 43 of the housings 7 and 8. Therefore, even if the optical fibers 3 and 4 are pulled while the fixing members 9 and 10 are attached to the housings 7 and 8, it is possible to more reliably prevent the fixing members 9 and 10 from being detached from the housings 7 and 8. .
Further, according to the optical connector of the present invention, when the fixing members 9 and 10 are in the fully engaged state, the engaging portion formed on one end side of the fixing members 9 and 10 in the optical axis direction of the optical fibers 3 and 4. 26 engages with the engaged portions 20 of the housings 7 and 8, and second engaging portions 27 and 52 formed on the other end side of the fixing members 9 and 10 in the optical axis direction of the optical fiber are the housing firsts. Engage with the two engaged portions 21 and 45. From this, even if an impact from the outside is received, one end or the other end of the fixing members 9, 10 in the optical axis direction of the optical fibers 3, 4 falls downward, and the mounting portions 18, 8 of the housings 7, 8 No longer hangs down from 43.
Therefore, it is possible to improve the assembling workability for assembling the fixing members 9 and 10 to the housings 7 and 8 more reliably.
Furthermore, according to the optical connector of the present invention, when the fixing members 9 and 10 are in the fully engaged state, the one end side and the other end side of the fixing members 9 and 10 in the optical axis direction of the optical fibers 3 and 4 are connected to the housing 7. , 8 can be kept engaged. Therefore, even if it receives an impact from the outside, either one end side or the other end side of the fixing members 9 and 10 in the optical axis direction of the optical fibers 3 and 4 does not fall downward, and the fixing members 9 and 10 are It can be securely assembled to the mounting portions 18 and 43 of the housings 7 and 8. By doing so, the optical fibers 3, 4 can be securely fixed to the housings 7, 8 by the fixing members 9, 10. From this, fluttering of the optical fibers 3 and 4 and optical axis shift can be prevented.
Therefore, it is possible to prevent variations in coupling between the optical connectors and improve the reliability of the system link.

Furthermore, according to the optical connector of the present invention, the engaging portion 26 is formed in a hemispherical shape having a radius smaller than the thickness of the portion of the fixing members 9 and 10 where the engaging portion 26 is provided. Thus, the fixing members 9 and 10 can be easily assembled to the housings 7 and 8.
Therefore, it is possible to further improve the assembling workability for assembling the fixing members 9 and 10 to the housings 7 and 8.

The optical connector according to the present invention may use Example 2 below in addition to Example 1.
FIG. 13 shows an optical connector according to a second embodiment of the present invention.
FIGS. 13A and 13B are diagrams showing a first fixing member in Embodiment 2 of the optical connector of the present invention, in which FIG. 13A is a perspective view of a tip portion of the first fixing member, and FIG. It is FF sectional drawing of the engaging part to show in figure.

The first fixing member 90 of the optical connector according to the present embodiment has the same configuration and structure as those of the first fixing member 9 described in the first embodiment except for the engaging portion 91 illustrated in FIG. Therefore, in this embodiment, the description of the first fixing member 90 other than the engaging portion 91 is omitted.
The engaging portion 91 is formed as a portion for fixing the first fixing member 90 to the second housing by engaging with an engaged portion of a second housing (not shown). The engaging portion 91 is formed so as to protrude from the tip 64 of the wall portion 33 of the first fixing member 90 in the optical axis direction of the first optical fiber 3 (see FIG. 1) (front direction indicated by an arrow in FIG. 13). . The tip 64 of the wall 33 corresponds to “a portion where the engaging portion is provided” in the claims. The height of the tip position of the engaging portion 91 is formed to be the same as the height of the tip position of the engaging portion 26 of the first embodiment (the height of the tip position of the engaging portion 91 is an example) And).

The engaging portion 91 includes a columnar portion 92 and a spherical portion 93. The columnar portion 92 is formed as a portion that becomes a base end portion of the engaging portion 91. The columnar portion 92 is formed to be continuous with the tip 64 of the wall portion 33 and project in a columnar shape. The columnar portion 92 is formed to have a radius smaller than the thickness of the tip 64 of the wall portion 33 corresponding to the “portion where the engaging portion is provided” in the claims. Specifically, the engaging portion 91 is formed in a cylindrical shape having a radius that is less than ¼ of the vertical thickness of the tip 64 of the wall portion 33.
The spherical portion 93 is formed as a portion that becomes the tip of the engaging portion 91. The spherical portion 93 is continuous with the tip of the cylindrical portion 92 and is formed in a spherical shape like a convex lens. In this way, by forming the distal end portion of the engaging portion 91 in a spherical shape, the first fixing to the first housing 7 (see FIGS. 1 and 2) compared to the engaging portion simply formed in a cylindrical shape. Assembling of the member 90 becomes easy.

  In this embodiment, although not shown in particular, the engaged portion of the second housing is formed in a shape that can be engaged with the engaging portion 91 of the first fixing member 90. Therefore, the engaged portion of the second housing in the present embodiment is formed in a recess having a cylindrical shape on the entrance side and a spherical shape on the back side.

  As described above with reference to FIG. 13, according to the optical connector of the present invention, the same effects as those of the first embodiment can be obtained.

The optical connector according to the present invention may use Example 3 below in addition to Example 1 or 2.
FIG. 14 shows a third embodiment of the optical connector according to the present invention.
14A and 14B are views showing a first fixing member in the optical connector according to the third embodiment of the present invention, in which FIG. 14A is a perspective view of a tip portion of the first fixing member, and FIG. It is GG sectional drawing of the engaging part to show in figure.

The first fixing member 94 of the optical connector according to the present embodiment is configured and structured in the same manner as the first fixing member 9 described in the first embodiment except for the engaging portion 95 illustrated in FIG. Therefore, in this embodiment, the description of the first fixing member 94 other than the engaging portion 95 is omitted.
The engaging portion 95 is formed as a portion for fixing the first fixing member 94 to the second housing by engaging with an engaged portion of a second housing (not shown). The engaging portion 95 is formed to protrude from the tip 64 of the wall portion 33 of the first fixing member 94 in the optical axis direction of the first optical fiber 3 (see FIG. 1) (front direction indicated by an arrow in FIG. 14). . The tip 64 of the wall 33 corresponds to “a portion where the engaging portion is provided” in the claims. The height of the front end position of the engaging portion 95 is formed to be the same height as the height of the front end position of the engaging portion 26 of the first embodiment (the height of the front end position of the engaging portion 95 is an example) And).

The engaging portion 95 is formed in a substantially conical shape. The base end portion 96 of the engaging portion 95 is formed to have a radius smaller than the thickness of the distal end 64 of the wall portion 33 corresponding to the “portion where the engaging portion is provided” in the claims. Specifically, the engaging portion 95 is formed in a substantially conical shape having a radius that is less than ¼ of the vertical thickness of the tip 64 of the wall portion 33.
The distal end portion 97 of the engaging portion 95 has a spherical shape, and the cross section is formed in an arc shape as shown in FIG. Thus, by forming the distal end portion 97 of the engagement portion 95 into a spherical shape, the first housing 7 (FIG. 1) is formed compared to the engagement portion having a conical shape whose distal end is not formed into a spherical shape. And the assembly of the first fixing member 94 with respect to FIG. As shown in FIG. 14, the engaging portion 95 is formed so that the distal end portion 97 is disposed at a position shifted downward from the central axis of the engaging portion 95.

  In the present embodiment, although not particularly illustrated, the engaged portion of the second housing is formed in a shape that allows the engaging portion 95 of the first fixing member 94 to be engaged. Therefore, the engaged portion of the second housing in the present embodiment is formed in a substantially conical recess in which the engaging portion 95 can be engaged.

  As described above with reference to FIG. 14, according to the optical connector of the present invention, the same effects as those of the first embodiment can be obtained.

The optical connector according to the present invention may use the following fourth embodiment in addition to the first, second, or third embodiment.
FIG. 15 shows Embodiment 4 of the optical connector according to the present invention.
FIG. 15 is a perspective sectional view showing Embodiment 4 of the optical connector of the present invention.

As shown in FIG. 15, the optical connector fitting structure according to the present embodiment includes a first optical connector 70 holding a first optical fiber 71 in a first housing 73, and a second optical fiber in a second housing. The first optical fiber 71 of the first optical connector 70 and the second optical fiber of the second optical connector are optically connected by fitting the held second optical connector (not shown) with the connector. Is.
The configuration and structure of the second optical connector are the same as those of the second optical connector 2 described in the first embodiment.

  In this embodiment, the ferrule 72 attached to the tip of the first optical fiber 71 has the same configuration and structure as the ferrule 5 and the ferrule 6 in the first embodiment. In the ferrule 72, a first flange 73, a second flange 74, and a third flange 75 are provided in order from the distal end side with a predetermined interval.

An optical fiber locking portion 80 is provided in the ferrule holding and housing chamber 79 formed in the ferrule housing portion 78 of the first housing 73.
Specifically, the optical fiber locking portion 80 is an elastic protruding piece portion that is formed in an elastic piece shape that is coupled to the inner surfaces of the left side wall 81 of the first housing 73 and the right side wall 82 of the first housing 73. 83, and a locking projection 84 that is formed at the tip of the elastic protruding piece 83 so as to protrude to the inside of the ferrule holding and accommodating chamber 79.

Here, the procedure for assembling the first optical fiber 71 to the first housing 73 and the operation of each part will be described.
First, the first optical fiber 71 is inserted into the insertion port 84 of the first housing 73 with the ferrule 72 attached to the tip.
Thereafter, when the ferrule 72 passes through the optical fiber locking projection 84 of the ferrule holding and accommodating chamber 79, the optical fiber locking projection 84 engages between the first flange 73 and the second flange 74 of the ferrule 72.
Thus, when the optical fiber locking projection 84 is engaged between the first flange 73 and the second flange 74 of the ferrule 72, the ferrule 72 is reliably held by the ferrule holding chamber 79.
Thus, the assembly of the first optical fiber 71 to the first housing 73 is completed.

As described above with reference to FIG. 15, according to the optical connector of the present invention, the same effect as in the first embodiment is obtained, and the optical fiber locking portion 80 provided in the housing 76 is related to the optical fiber 71. It is possible to prevent the optical fiber 71 from coming off from the housing 76 in the optical axis direction. Thus, fluttering of the optical fiber 71 and optical axis deviation can be prevented more reliably.
Therefore, it is possible to more reliably prevent the coupling variation between the optical connectors and to further improve the reliability of the system link.

  In addition, the present invention can of course be modified in various ways within the scope not changing the gist of the present invention.

In the above description, the optical fiber locking portion 80 is provided only in the first housing 73. However, the present invention is not limited to this, and the following configuration may be used.
That is, for example, an optical fiber locking portion may be provided in the ferrule holding and housing chamber 39 formed in the ferrule housing portion 38 of the second housing 8 illustrated in FIG.
Specifically, this optical fiber locking portion is connected to the inner surface of each side wall 46 of the second housing 8 and is formed into an elastic piece, and is connected to the tip of the elastic protrusion piece. And a locking projection formed so as to protrude to the inside of the ferrule holding accommodation chamber 39.

  DESCRIPTION OF SYMBOLS 1,70 ... 1st optical connector (optical connector), 2 ... 2nd optical connector (optical connector), 3,71 ... 1st optical fiber (optical fiber), 4 ... 2nd optical fiber (optical fiber), 5, 6, 72 ... Ferrule, 7, 76 ... First housing (housing), 8 ... Second housing (housing), 9, 77, 90, 94 ... First fixing member (fixing member), 10 ... Second fixing member ( Fixed member), 11 ... first housing fitting part, 12, 38, 78 ... ferrule accommodating part, 13, 39, 79 ... ferrule holding accommodating chamber, 14 ... sleeve insertion hole, 15 ... guide groove, 16 ... groove inner surface 17 ... groove bottom, 18, 43 ... mounting portion, 19, 44 ... insertion port, 20 ... engaged portion, 21 ... second engaged portion, 22, 46 ... side wall, 24, 47 ... opening, 25 ... Bottom wall, 26,9 DESCRIPTION OF SYMBOLS 1,95 ... Engagement part, 27 ... 2nd engagement part, 28,55 ... Elastic protrusion piece part, 29,56 ... Engagement projection part, 30,57 ... Tip engagement projection part, 31,58 ... Middle Engaging protrusions 32, 59 ... Proximal end engaging protruding parts, 33 ... Wall part, 34 ... Inner wall, 35 ... Split sleeve, 36 ... Spring member, 37 ... Second housing fitting part, 40 ... Upper wall, 42 ... slit for insertion, 45 ... engaged portion (second engaged portion), 48 ... partition wall, 49 ... insertion hole, 50 ... guide slit, 51 ... ceiling wall, 52 ... engaging portion (second engagement) 53 ... Fitting prevention wall portion at the time of temporary engagement, 54 ... Ferrule guide wall portion, 60 ... Base portion, 61 ... Fitting wall protruding wall portion, 62 ... Insertion groove, 63 ... Rear wall, 64 ... Front end, 73 ... 1st flange, 74 ... 2nd flange, 75 ... 3rd flange, 80 ... Optical fiber engagement Parts, 81 ... left wall, 82 ... right side wall, 83 ... elastic protruding parts, 84 ... locking projection portion, 92 ... cylindrical part, 93 ... spherical portion, 96 ... base portion, 97 ... tip

Claims (6)

A housing that holds the optical fiber, and a fixing member that is provided separately from the housing and that fixes the optical fiber to the housing by assembling the housing.
An engaging portion that protrudes in a convex shape in the optical axis direction from one end of the optical fiber in the optical axis direction is formed on the fixing member,
An engagement portion for engaging the engagement portion is provided in the housing,
The fixing member is engaged with the housing by changing the engagement state from the temporary engagement state to the full engagement state.
An optical connector characterized by that. The optical connector according to claim 1,
A second engagement portion that engages with the housing is provided on the other end side of the optical fiber in the optical axis direction of the fixing member, and a second engagement portion that engages the second engagement portion with the housing. To be engaged,
From the temporarily engaged state in which the fixing member is press-fitted and held in the mounting portion of the housing, the engaging portion is engaged with the engaged portion, and the second engaging portion is engaged with the second engaged portion. An optical connector, wherein the optical connector is engaged in a fully engaged state by engaging with a joint. The optical connector according to claim 1 or 2,
The optical connector, wherein the engaging portion is formed in a hemispherical shape having a radius smaller than a thickness of a portion of the fixing member where the engaging portion is provided. The optical connector according to claim 1 or 2,
An optical connector, wherein the engaging portion is formed in a cylindrical shape having a radius smaller than a thickness of a portion of the fixing member where the engaging portion is provided, and the tip is formed in a spherical shape. The optical connector according to claim 1 or 2,
An optical connector, wherein the engaging portion is formed in a substantially conical shape having a radius smaller than a thickness of a portion of the fixing member where the engaging portion is provided, and the tip is formed in a spherical shape. The optical connector according to claim 1, 2, 3, 4 or 5,
An optical connector, wherein the housing is provided with an optical fiber locking portion that engages with the optical fiber and prevents the optical fiber from coming out of the housing in the optical axis direction.

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