Source: https://patents.google.com/patent/JP4750178B2/en
Timestamp: 2019-10-14 00:12:12
Document Index: 756635201

Matched Legal Cases: ['art 1', 'art 1', 'art 1', 'art 1', 'art 1', 'art 1', 'art 3']

JP4750178B2 - Optical connector - Google Patents
JP4750178B2
JP4750178B2 JP2008327221A JP2008327221A JP4750178B2 JP 4750178 B2 JP4750178 B2 JP 4750178B2 JP 2008327221 A JP2008327221 A JP 2008327221A JP 2008327221 A JP2008327221 A JP 2008327221A JP 4750178 B2 JP4750178 B2 JP 4750178B2
JP2008327221A
JP2010151901A (en
丈司 礒田
2008-12-24 Application filed by ホシデン株式会社 filed Critical ホシデン株式会社
2008-12-24 Priority to JP2008327221A priority Critical patent/JP4750178B2/en
2010-07-08 Publication of JP2010151901A publication Critical patent/JP2010151901A/en
2011-08-17 Publication of JP4750178B2 publication Critical patent/JP4750178B2/en
The present invention relates to an optical connector for bidirectional optical communication that optically couples a light emitting element, a light receiving element, and an optical fiber.
The conventional optical connector described in Non-Patent Document 1 will be described from the viewpoint of its assembly method. First, as shown in FIG. 10, the light guide 1 is inserted into the receptacle body 2 in the direction of the arrow A1. On the other hand, the light emitting element 3 and the light receiving element 4 are attached to the element holder 5, and the element holder 5 is attached to the shield cover 6 as shown in FIG. 11. The shield cover 6 has leaf springs 6h and 6i (FIG. 12), and the attached element holder 5 is moved in the direction of arrow A2 (upward with respect to the paper surface of FIG. 11 and leftward with respect to the paper surface of FIG. ).
10, FIG. 11, FIG. 13, FIG. 15 and FIG. 16 are schematic views showing a conventional optical connector, and there are parts shown in a simplified manner. For example, the leaf springs 6h and 6i are shown in a simplified manner, unlike the actual shapes shown in FIGS.
As shown in FIG. 11, the receptacle body 2 is slid in the direction of the arrow A2 with respect to the shield cover 6, and is combined with the shield cover 6 as shown in FIG. In the middle of the slide, the protrusions 2d and 2e of the receptacle body 2 hit the light emitting element 3 and the light receiving element 4, respectively, and the light emitting element 3 and the light receiving element 4 together with the element holder 5 are in the direction of the arrow A3 (relative to the paper surface of FIG. 13). Push back downward (to the right with respect to the page of FIG. 12). By this pushing back, the light guide 1 is disposed at an appropriate position with respect to the light emitting element 3 and the light receiving element 4. FIG. 14 is an exploded perspective view of a conventional optical connector.
Although the above-described assembly method is not described in Non-Patent Document 1, there is no other prior art document describing this conventional optical connector, and therefore Non-Patent Document 1 is cited as a prior art document.
"MOST informative", 2nd edition, MOST Cooperation, March 2008, p. 17, [online], [Searched on December 19, 2008], Internet <URL: www.mostcooperation.com/publications/brochures_newsletters/index.html?do170532=download>
However, in the conventional optical connector described in Non-Patent Document 1, play may occur between the light guide 1 and the receptacle body 2 after the receptacle body 2 and the shield cover 6 are combined. Due to this play, the gap amount between the light guide 1 and the light emitting element 3 and the light receiving element 4 varies, and the amount of light leaking as a loss changes, so that there is a problem that the optical characteristics may not be stable.
In order to solve the above-described problems, the present invention provides an urging means for urging the light guide in the insertion direction of the light guide into the receptacle body in a state where the shield cover and the receptacle body are combined.
Since the urging means urges the light guide in the insertion direction of the light guide into the receptacle body in a state where the shield cover and the receptacle body are combined, play does not occur between the light guide and the receptacle body. Therefore, the present invention has an effect of stabilizing the optical characteristics.
The light guide 1 includes a transmission-side optical function unit 1a that optically couples the light-emitting element 3 and the transmission-side optical fiber, a reception-side optical function unit 1b that optically couples the light-receiving element 4 and the reception-side optical fiber, and transmission-side optics. And a connecting portion 1c for connecting the functional portion 1a and the receiving-side optical functional portion 1b. The transmission-side optical function unit 1a, the reception-side optical function unit 1b, and the connection unit 1c are made of a transparent synthetic resin material and are integrally formed by injection molding.
The transmission-side optical function unit 1a and the reception-side optical function unit 1b are cylindrical. In order to prevent leakage of light from one of the transmission side optical function unit 1a and the reception side optical function unit 1b to the other, a V-shaped groove is provided in the connection unit 1c. Similarly, in order to prevent light leakage from one side to the other, the length in the circumferential direction of the region where the transmission side optical function unit 1a and the reception side optical function unit 1b are in contact with the connection unit 1c is determined by the transmission side optical function. The transmission-side optical function unit 1a, the reception-side optical function unit 1b, and the connecting unit 1c are in contact with each other so as to be shorter than half of the outer circumference of the function unit 1a and the reception-side optical function unit 1b.
The light guide 1 is inserted into the receptacle body 2. That is, one end of the transmission-side optical function unit 1a and one end of the reception-side optical function unit 1b are inserted into the hole 2a and the hole 2b of the receptacle body 2, respectively. The diameters of the holes 2a and 2b are enlarged inside the receptacle body, and a transmission-side optical fiber terminal (not shown) and a reception-side optical fiber terminal (not shown) are fitted into the enlarged part.
The upper surface of the receptacle body 2 is covered with a cover 7. The cover 7 rotatably supports the shutter 8. The shutter 8 is urged by a torsion coil spring 9 in a direction to close the shutter 8. Therefore, when the transmission-side optical fiber terminal and the reception-side optical fiber terminal are not inserted into the receptacle body 2, the shutter 8 is closed, so that it is possible to prevent the entry of foreign substances that can cause deterioration of optical characteristics. When the transmission side optical fiber terminal and the reception side optical fiber terminal are to be inserted into the receptacle body 2, the transmission side optical fiber terminal and the reception side optical fiber terminal hit the shutter 8 and push up the shutter 8. That is, the shutter 8 is rotated in the direction in which the shutter 8 approaches the cover 7.
The light emitting element 3 and the light receiving element 4 are mounted on the element holder 5. The element holder 5 is attached to the shield cover 6. The shield cover 6 has leaf springs 6h and 6i, and these leaf springs 6h and 6i press the mounted element holder 5 downward against the paper surface of FIG. In this manner, the shield cover 6 accommodates the light emitting element 3 and the light receiving element 4 via the element holder 5.
The shield cover 6 has openings 6 a and 6 b into which the transmission side optical function unit 1 a and the reception side optical function unit 1 b of the light guide 1 and the protrusions 2 d and 2 e of the receptacle body 2 are inserted. Leaf springs 6c and 6d as biasing means are provided between the openings 6a and 6b. In this example, the leaf springs 6 c and 6 d are integrally formed with the shield cover 6. The leaf springs 6c and 6d protrude from the inner surface 6e of the shield cover 6 and extend in the center direction of the openings 6a and 6b, respectively.
The receptacle body 2 in which the light guide 1 is inserted is slid and combined with a shield cover 6 that houses the light emitting element 3 and the light receiving element 4. In the state where the shield cover 6 and the receptacle body 2 are combined, the end 1d of the transmission-side optical function unit 1a and the end 1e of the reception-side optical function unit 1b of the light guide 1 are respectively connected to the light emitting element 3 and the light receiving element 4. opposite.
In a state where the shield cover 6 and the receptacle body 2 are combined, the leaf springs 6 c and 6 d urge the light guide 1 in the direction in which the light guide 1 is inserted into the receptacle body 2. As a result, no play occurs between the light guide 1 and the receptacle body 2, and rattling of the light guide 1 can be prevented.
As shown in FIG. 15, when the light guide 1 is not firmly attached to the receptacle body 2 due to a work mistake or the like, and the end portions 1 d and 1 e of the light guide 1 protrude beyond the protruding portions 2 d and 2 e of the receptacle body 2. There is. In this case, if the leaf springs 6c and 6d which are urging means are not provided, when the receptacle body 2 is slid to the shield cover 6, the protrusions 2d and 2e of the receptacle body 2 are brought into contact with the light emitting element 3 and the light receiving element 4, respectively. As shown in FIG. 16, the end 1d of the transmission-side optical function unit 1a and the end 1e of the reception-side optical function unit 1b correspond to the light emitting element 3 and the light receiving element 4, respectively. As a result, the end 1d of the transmission-side optical function unit 1a, the end 1e of the reception-side optical function unit 1b, the light-emitting element 3, and the light-receiving element 4 may be scratched, dented, etc., and the optical characteristics of the optical connector may be deteriorated. There is.
When the leaf springs 6c and 6d sufficiently protrude from the inner surface 6e of the shield cover 6 (how much the protrusion should be described later), the light guide 1 is firmly attached to the receptacle body 2 due to a work mistake or the like. Even if not inserted, the end 1d of the transmission-side optical function unit 1a and the end 1e of the reception-side optical function unit 1b hit the light-emitting element 3 and the light-receiving element 4, respectively, by sliding the receptacle body 2 on the shield cover 6. The leaf springs 6c and 6d hit the connecting portion 1c of the light guide 1 before, and the light guide 1 is firmly inserted into the receptacle body 2 by its elastic force. Therefore, if the leaf springs 6c and 6d sufficiently protrude from the inner surface 6e of the shield cover 6, when the receptacle body 2 and the shield cover 6 are combined by sliding, the end 1d of the transmission-side optical function unit 1a and the reception side are combined. It is possible to reduce the possibility that optical characteristics of the optical connector will deteriorate due to scratches, dents and the like on the end 1e of the optical function unit 1b, the light emitting element 3, and the light receiving element 4.
With reference to FIG. 5, how much the leaf springs 6c and 6d should protrude from the shield cover 6 will be described. The portions where the end 1d of the transmission-side optical function unit 1a and the end 1e of the reception-side optical function unit 1b of the light emitting element 3 and the light receiving element 4 are opposed to each other are defined as regions 3a and 4a. Moreover, let the part which contacts with respect to the light guide 1 of the leaf | plate springs 6c and 6d be area | regions 6f and 6g. The length in the sliding direction when the leaf springs 6c and 6d of the regions 3a and 4a and the regions 6f and 6g are not in contact with the light guide 1 is L1. The portions of the light guide 1 that contact the leaf springs 6c and 6d are defined as regions 1f and 1g. The tips of the end 1d of the transmission side optical function unit 1a and the end 1e of the reception side optical function unit 1b are defined as 1h and 1i. The lengths of the regions 1f and 1g and the tips 1h and 1i are L2.
At this time, if the leaf springs 6c and 6d are projected from the inner surface 6e of the shield cover 6 so that L1> L2, the transmission-side optical function unit 1a is combined when the receptacle body 2 and the shield cover 6 are combined by sliding. It is possible to reduce the possibility of degradation of the optical characteristics of the optical connector, which may be caused by scratches, dents, etc. on the end 1d of the optical fiber, the end 1e of the receiving optical function unit 1b, the light emitting element 3, and the light receiving element 4. it can.
The leaf springs 6c and 6d are light guides in a direction in which the transmission side optical function unit 1a and the reception side optical function unit 1b are separated from the light emitting element 3 and the light receiving element 4, respectively, in a state where the shield cover 6 and the receptacle body 2 are combined. 1 is energized. That is, the leaf spring 6a urges the light guide 1 in a direction to separate the transmission side optical function unit 1a from the light emitting element 3, and the leaf spring 6b pushes the light guide 1 in a direction to separate the reception side optical function unit 1b from the light receiving element 4. Energize. As described above, by using an urging unit that urges the light guide 1 in a direction in which the transmission-side optical function unit 1a and the reception-side optical function unit 1b are separated from the light-emitting element 3 and the light-receiving element 4, respectively. It can prevent more effectively that both the optical function part 1a and the receiving side optical function part 1b collide with the light emitting element 3 and the light receiving element 4. FIG. Further, it is possible to more effectively prevent both the fluctuation of the gap amount between the transmission side optical function unit 1a and the light emitting element 3 and the fluctuation of the gap amount between the reception side optical function unit 1b and the light receiving element 4. it can.
The biasing means is not limited to the leaf springs 6c and 6d schematically illustrated in FIGS. As schematically illustrated in FIG. 6, leaf springs 1 j and 1 k which are urging means may be integrally formed with the light guide 1. Further, as schematically illustrated in FIG. 7, leaf springs 5 a and 5 b that are urging means may be integrally formed with the element holder 5. In this case, the leaf springs 5 a and 5 b come into contact with the light guide 1 through a through hole (not shown) formed in the shield cover 6. Further, the biasing means may be an arbitrary elastic body other than the leaf spring, and as schematically illustrated in FIG. 8, the two coil springs through which the transmission-side optical function unit 1a and the reception-side optical function unit 1b are inserted, respectively. 11 may be sufficient.
Needless to say, other modifications are possible without departing from the spirit of the present invention.
The disassembled perspective view of the example of the optical connector by this invention. The disassembled perspective view of the example of the optical connector by this invention. Sectional drawing of the example of the optical connector by this invention. The perspective view of sectional drawing of the example of the optical connector by this invention. The figure for demonstrating the length of the leaf | plate springs 6c and 6d by this invention. The figure which shows the example of the biasing means by this invention typically. The figure which shows the example of the biasing means by this invention typically. The figure which shows the example of the biasing means by this invention typically. The figure which shows the example of the biasing means by this invention typically. The figure for demonstrating the conventional optical connector. The figure for demonstrating the conventional optical connector. Sectional drawing of the conventional optical connector. The figure for demonstrating the conventional optical connector. The disassembled perspective view of the conventional optical connector. The figure for demonstrating the conventional optical connector. The figure for demonstrating the conventional optical connector.
DESCRIPTION OF SYMBOLS 1 Light guide 1a Transmission side optical function part 1b Reception side optical function part 1c Connection part 1d, 1e End part 1f, 1g Area | region 1h, 1i Tip 1j, 1k Leaf spring 2 Receptacle body 2d, 2e Protrusion part 3 Light emitting element 3a, 4a Area 4 Light receiving element 5 Element holder 5a, 5b Leaf spring 6 Shield cover 6a, 6b Opening 6c, 6d Leaf spring 6f, 6g Area 6h, 6i Leaf spring 7 Cover 8 Shutter 11 Coil spring
A shield cover for accommodating the light emitting element and the light receiving element;
A transmission-side optical functional unit that optically couples the light-emitting element and the transmission-side optical fiber, a reception-side optical functional unit that optically couples the light-receiving element and the reception-side optical fiber , the transmission-side optical functional unit, and the reception side A light guide made of a transparent synthetic resin material, and having a connecting portion for connecting the optical function portion ;
A receptacle body that is inserted into the light guide and is slidable with respect to the shield cover, and is combined with the shield cover by the slide;
In a state where the shield cover and the receptacle body are combined, the end of the transmission side optical function unit and the end of the reception side optical function unit face the light emitting element and the light receiving element, respectively.
When the shield cover and the receptacle body are combined, and when the shield cover and the receptacle body are combined , the light guide is inserted at the connecting portion in the insertion direction of the light guide into the receptacle body. Furthermore, look at including biasing means for biasing,
The upper Symbol emitting element and the sending side optically functional section end and the portion where the end portion of the receiving side optically functional section is in contact with respect to the light guide opposing portion and said biasing means each of the light receiving element The length in the sliding direction when the urging means is not in contact with the light guide is the length of the portion of the light guide that comes into contact with the urging means and the tip of the end of the transmission-side optical function unit. And longer than the length in the sliding direction with the tip of the end of the receiving-side optical function unit,
An optical connector characterized by that.
The optical connector according to claim 1 ,
The biasing means includes the light guide in a direction in which the transmitting side optical function unit and the receiving side optical function unit are separated from the light emitting element and the light receiving element, respectively, in a state where the shield cover and the receptacle body are combined. Is an urging means to urge
The optical connector according to claim 1 or 2 ,
The biasing means is provided on the shield cover,
The light emitting element and the light receiving element are accommodated in the shield cover via an element holder,
The biasing means is provided in the element holder,
The urging means is two coil springs through which the transmission-side optical function unit and the reception-side optical function unit are inserted,
JP2008327221A 2008-12-24 2008-12-24 Optical connector Active JP4750178B2 (en)
JP2008327221A JP4750178B2 (en) 2008-12-24 2008-12-24 Optical connector
TW098141371A TWI481133B (en) 2008-12-24 2009-12-03 Optical connector
KR1020090121494A KR101646784B1 (en) 2008-12-24 2009-12-09 Optical connector
EP20090015731 EP2202551B1 (en) 2008-12-24 2009-12-18 Optical connector
AT09015731T AT556340T (en) 2008-12-24 2009-12-18 optical connector
US12/644,010 US8292520B2 (en) 2008-12-24 2009-12-22 Optical connector
CN 200910261949 CN101833148A (en) 2008-12-24 2009-12-23 Optical connector
JP2010151901A JP2010151901A (en) 2010-07-08
JP4750178B2 true JP4750178B2 (en) 2011-08-17
ID=41720518
JP2008327221A Active JP4750178B2 (en) 2008-12-24 2008-12-24 Optical connector
US (1) US8292520B2 (en)
EP (1) EP2202551B1 (en)
JP (1) JP4750178B2 (en)
KR (1) KR101646784B1 (en)
CN (1) CN101833148A (en)
AT (1) AT556340T (en)
TW (1) TWI481133B (en)
JP5080624B2 (en) 2010-08-31 2012-11-21 日本航空電子工業株式会社 Photoelectric composite connector and its receptacle
US10114184B2 (en) 2014-12-31 2018-10-30 Ls Mtron Ltd. Optical connector
KR102019740B1 (en) * 2014-12-31 2019-09-09 엘에스엠트론 주식회사 Optical connector
JP2017009727A (en) * 2015-06-19 2017-01-12 矢崎総業株式会社 Optical connector
JP3909853B2 (en) * 2004-04-26 2007-04-25 東芝電子エンジニアリング株式会社 The semiconductor laser device and a semiconductor laser assembly
TWI404985B (en) * 2004-11-04 2013-08-11 Hosiden Corp
JP4559952B2 (en) 2004-11-04 2010-10-13 ホシデン株式会社 Optical coupling member and the optical connector and method of assembling the optical connector using the same for optical communication connector
JP4297279B2 (en) * 2005-02-03 2009-07-15 矢崎総業株式会社 Optical connector
2008-12-24 JP JP2008327221A patent/JP4750178B2/en active Active
2009-12-03 TW TW098141371A patent/TWI481133B/en active
2009-12-09 KR KR1020090121494A patent/KR101646784B1/en active IP Right Grant
2009-12-18 AT AT09015731T patent/AT556340T/en unknown
2009-12-18 EP EP20090015731 patent/EP2202551B1/en active Active
2009-12-22 US US12/644,010 patent/US8292520B2/en active Active
2009-12-23 CN CN 200910261949 patent/CN101833148A/en not_active Application Discontinuation
KR101646784B1 (en) 2016-08-08
EP2202551B1 (en) 2012-05-02
US20100158451A1 (en) 2010-06-24
US8292520B2 (en) 2012-10-23
KR20100075384A (en) 2010-07-02
AT556340T (en) 2012-05-15
TW201037923A (en) 2010-10-16
TWI481133B (en) 2015-04-11
CN101833148A (en) 2010-09-15
EP2202551A1 (en) 2010-06-30
JP2010151901A (en) 2010-07-08
JP2012027275A (en) 2012-02-09 Photoelectric composite connector
TW200528305A (en) 2005-09-01 Slide-type writing instrument with a dry prevention unit
WO2007015983A3 (en) 2007-03-22 Multi-fiber fiber optic assembly