CN220855262U - Integrated optical attenuator - Google Patents

Abstract

The application relates to the technical field of optical attenuators, in particular to an integrated optical attenuator, wherein a first inserting core fixing piece and a second inserting core fixing piece are both arranged in a shell, and the first inserting core fixing piece is slidably arranged in an inserting head, so that a second hook part of the second inserting core fixing piece is positioned in an adapting groove. Through bayonet joint and adaptation groove phase-match, and then make integrated form optical attenuator's public head and female head can mutually match, and then improve integrated form optical attenuator's wild-type. The first hook part and the second hook part are hooked mutually, so that the plug-in connection is more stable, and the reliability and stability of the integrated optical attenuator are improved. By arranging two or more than two male heads on each shell, a plurality of pairs of male heads and female heads are formed, and the adaptability of the integrated optical attenuator is improved. Thus, the universality and the reliability of the integrated optical attenuator are improved, and the stability and the adaptability of the optical attenuator are enabled to meet expectations.

Description

Integrated optical attenuator

Technical Field

The application relates to the technical field of optical attenuators, in particular to an integrated optical attenuator.

Background

The optical attenuator is mainly used for attenuating the energy of an optical signal in an expected manner according to the requirement of a user and is commonly used for absorbing or reflecting the optical power margin, evaluating the loss of a system and various tests. The optical signal power detector is widely applied to adjusting the power of an optical signal transmitted by an optical communication system or a test system, so that the system achieves a good working state, and is commonly used for detecting the sensitivity and the dynamic range of an optical receiver.

The adapter is an optical device for connecting optical fiber jumper interfaces, and can realize efficient connection between two optical fiber connectors. One end of the adapter can be inserted into optical fiber connectors with different interface types to realize conversion among different interfaces.

The optical attenuator and the adapter are usually designed separately, so that not only can the universality of parts in the optical attenuator and the adapter be poor and the production cost be increased, but also the connection of the parts of the optical attenuator can be unreliable, the loosening is easy to occur, and the working instability in the use process is difficult to meet the expected requirement. And in some working occasions, more than one optical fiber line needs to be adapted to multiple optical fiber lines by using multiple optical attenuators, which not only leads to complex wiring, but also causes line confusion.

Therefore, how to improve the compatibility and reliability of the optical attenuator and make the stability and adaptability of the optical attenuator meet the expected requirements is a technical problem to be solved.

Disclosure of utility model

The application provides an integrated optical attenuator, which aims to solve the technical problems of how to improve the general matching property and the reliability of the optical attenuator and enable the stability and the adaptability of the optical attenuator to meet the expected requirements in the prior art.

The application provides a 1. An integrated optical attenuator, which is characterized by comprising:

The shell comprises a male head and a female head, the male head is provided with an adapter, the female head is provided with an adapter groove, the adapter is matched with the adapter groove, jacking protrusions are arranged on two sides of the adapter, and guide inclined planes are arranged on the inner sides of the jacking protrusions;

The first plug pin fixing piece is slidably arranged in the plug connector, a first hook part is arranged at the end part of the first plug pin fixing piece, the jacking protrusions are positioned on two sides of the first hook part, and in the sliding process of the first plug pin fixing piece relative to the shell, the first hook part can move along the sliding direction of the first plug pin fixing piece in the range of the jacking protrusions;

The second ferrule fixing piece is connected with one end, far away from the first hook part, of the first ferrule fixing piece, a second hook part is arranged at one end, far away from the first ferrule fixing piece, of the second ferrule fixing piece, the second hook part is positioned in the adapting groove, the first hook part is adapted to the second hook part, and limit protruding parts are arranged on two sides of the second hook part;

Wherein each shell is provided with two or more than two male heads, the number of the female heads is equal to that of the male heads, one end of each female head is fixedly connected with one end of each male head, and all the male heads and the female heads are arranged side by side;

The relation between the distance D between the inner side surface of the limit convex part and the outer side surface of the jacking convex part and the height H of the first hook part is configured as D is more than or equal to H.

Furthermore, the adjacent adapting grooves are communicated with each other, and the adjacent plug connectors are integrally formed.

Still further, the sum of the widths of all of the connectors is equal to the sum of the widths of all of the fitting grooves.

Still further, the both sides of second lock pin mounting are provided with first cantilever, second hook portion with spacing convex part all set up in the tip of first cantilever, first cantilever with the distance of adaptation groove cell wall is greater than or equal to the protrusion distance of second hook portion.

Furthermore, the adapting groove is provided with a clearance groove at the first cantilever, and the depth of the clearance groove is more than or equal to the protruding distance of the second hook part.

Further, the distance between the outer side surfaces of the first cantilevers is equal to the width of the plug connector, and the width of the plug connector is equal to the width of the adapting groove.

Furthermore, two sides of the first lock pin fixing piece are provided with stop protruding parts, two sides of the plug connector are provided with stop grooves, and the stop grooves are provided with abutting surfaces;

When the first ferrule fixing piece retracts towards the inside of the plug connector, the stop protruding portion abuts against the abutting surface.

Furthermore, an avoidance groove is formed in one side, close to the adaptation groove, of the plug connector, the avoidance groove is communicated with the adaptation groove, the avoidance groove is matched with the stop protruding portion, and the abutting surface is opposite to the avoidance groove in interval.

Further, a first guide bar is arranged on one side of the plug connector, and a second guide bar is arranged on the other side of the plug connector;

The side wall of one side of the adapting groove is provided with a first guide groove, and the side wall of the other side of the adapting groove is provided with a second guide groove;

The first guide strip is matched with the first guide groove, and the second guide strip is matched with the second guide groove;

The width of the first guide groove is larger than that of the second guide groove.

Still further, the relationship between the depth Q of the mating groove, the length M of the ferrule and the length N of the second ferrule holder within the mating groove is configured such that M < Q < M+N.

The beneficial effects achieved by the application are as follows:

The application provides an integrated optical attenuator, wherein a first inserting core fixing piece and a second inserting core fixing piece are both arranged in a shell, and the first inserting core fixing piece is slidably arranged in an inserting head, so that a second hook part of the second inserting core fixing piece is positioned in an adapting groove. The male head and the first core insert fixing piece jointly form a male head assembly, and the female head and the second core insert fixing piece jointly form a female head assembly, so that the double-head attenuator has a male head function and a female head function. Through bayonet joint and adaptation groove phase-match, and then make integrated form optical attenuator's public head and female head can mutually match, and then improve integrated form optical attenuator's wild-type. The first hook part of the first ferrule fixing piece is matched with the second hook part of the second ferrule fixing piece, so that the male head component and the female head component can be mutually matched, and the wildness of the integrated optical attenuator is further improved. After the male head of one integrated optical attenuator is inserted into the female head of another integrated optical attenuator, the plug connector is inserted into the adapting groove. In the process that the plug is inserted into the adaptation groove, the jacking protrusion passes through the limit protruding part, and the first hook part and the second hook part are hooked mutually, so that the plug is more stable, and the reliability and the stability of the integrated optical attenuator are improved. In the process that the male head part of one integrated optical attenuator is pulled out from the female head part of the other integrated optical attenuator, the inserted shell of the integrated optical attenuator is pulled, and the first inserting core fixing piece of the double-head attenuator is hooked with the second hook part of the other double-head attenuator through the first hook part to slide relative to the shell. In the process that the shell of the inserted integrated optical attenuator and the first inserting core fixing piece slide relatively, the guide inclined plane of the jacking bulge extrudes the limit convex part, so that the second hook part is lifted, the relation between the distance D between the inner side surface of the limit convex part and the outer side surface of the jacking bulge and the height H of the first hook part is configured to be D not less than H, so that the second hook part can pass through the first hook part after being lifted, and then the inserting head of the inserted integrated optical attenuator can be smoothly pulled out from the adapting groove of the inserted integrated optical attenuator, and the pulling and inserting reliability of the integrated optical attenuator is improved. Through making every casing set up two or more public heads, the quantity of female head equals with the quantity of public head, and then forms many pairs of public head and female head, and every public head of pair and female head all can adapt two lock pin pieces, and then makes integrated optical attenuator satisfy the demand of many pairs of double-circuit optic fibre, improves integrated optical attenuator's adaptability. Thus, the universality and the reliability of the integrated optical attenuator are improved, and the stability and the adaptability of the optical attenuator are enabled to meet expectations.

Drawings

FIG. 1 is a schematic diagram of an exploded structure of two integrated optical attenuators in accordance with an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an exploded structure of an integrated optical attenuator in an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of two integrated optical attenuators in an embodiment of the present utility model;

FIG. 4 is an enlarged view of FIG. 3 at A in accordance with an embodiment of the present utility model;

FIG. 5 is a perspective cross-sectional view of two integrated optical attenuators in an embodiment of the present utility model;

FIG. 6 is a cross-sectional view of an integrated optical attenuator with a ferrule removed in an embodiment of the present utility model;

FIG. 7 is a rear view of an integrated optical attenuator in an embodiment of the present utility model;

FIG. 8 is a schematic diagram of an exploded structure of two integrated optical attenuators according to another embodiment of the present utility model;

Fig. 9 is a schematic perspective view of two integrated optical attenuators according to another embodiment of the present utility model.

Description of main reference numerals:

10. An integrated optical attenuator; 11. a housing; 12. a male head; 13. a plug; 131. lifting the bulge; 132. a guide slope; 133. a plug-in groove; 134. a limit part; 135. a stop groove; 136. an abutment surface; 137. an avoidance groove; 138. a first guide bar; 139. a second guide bar; 130. a clearance groove; 14. a female head; 141. an adaptation groove; 142. a first guide groove; 143. a second guide groove; 15. a first ferrule holder; 151. a first hook portion; 152. inserting a core parting bead; 153. a ferrule fixing groove; 154. a hook groove; 155. a second cantilever; 156. a stop protrusion; 16. a second ferrule holder; 161. a second hook portion; 162. a limit protrusion; 163. a first ferrule fixing boss; 164. a first cantilever; 165. spacing intervals; 166. a second ferrule fixing protrusion; 167. a third hook portion; 17. a ferrule.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. Furthermore, it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "left," "right," "horizontal," "top," "bottom," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Referring to fig. 1 to 5, in some embodiments of the present application, an integrated optical attenuator 10 is provided, which includes: a housing 11, a first ferrule holder 15, and a second ferrule holder 16.

The shell 11 comprises a male head 12 and a female head 14, the male head 12 is provided with a plug 13, the female head 14 is provided with an adapting groove 141, the plug 13 is matched with the adapting groove 141, the two sides of the plug 13 are provided with jacking protrusions 131, and the inner sides of the jacking protrusions 131 are provided with guide inclined planes 132.

The first ferrule fixing piece 15 is slidably mounted in the plug 13, the end portion of the first ferrule fixing piece 15 is provided with a first hook portion 151, the jacking protrusions 131 are located on two sides of the first hook portion 151, and in the sliding process of the first ferrule fixing piece 15 relative to the housing 11, the first hook portion 151 can move in the range of the jacking protrusions 131 along the sliding direction of the first ferrule fixing piece 15.

The second ferrule fixing member 16 is connected to the first ferrule fixing member 15 at an end far away from the first hook portion 151, a second hook portion 161 is provided at an end of the second ferrule fixing member 16 far away from the first ferrule fixing member 15, the second hook portion 161 is located in the adapting groove 141, the first hook portion 151 is adapted to the second hook portion 161, and limit protrusions 162 are provided at two sides of the second hook portion 161.

Wherein, the relation between the distance D between the inner side surface of the limit protrusion 162 and the outer side surface of the lifting protrusion 131 and the height H of the first hook 151 is configured such that D is equal to or greater than H.

The first ferrule holder 15 and the second ferrule holder 16 are both mounted in the housing 11, and the first ferrule holder 15 is slidably mounted in the plug 13, so that the second hook 161 of the second ferrule holder 16 is located in the fitting groove 141. The male head 12 and the first ferrule fixing piece 15 together form a male head assembly, and the female head 14 and the second ferrule fixing piece 16 together form a female head assembly, so that the double-head attenuator has a male head function and a female head function.

The plug 13 is matched with the adapting groove 141, so that the male head 12 and the female head 14 of the integrated optical attenuator 10 can be matched with each other, and the universality of the integrated optical attenuator 10 is improved. The first hook 151 of the first ferrule holder 15 is matched with the second hook 161 of the second ferrule holder 16, so that the male and female components can be matched with each other, thereby further improving the wild-type of the integrated optical attenuator 10.

After the male part 12 of one integrated optical attenuator 10 is inserted into the female part 14 of another integrated optical attenuator 10, the plug 13 is inserted into the fitting groove 141. In the process of inserting the plug 13 into the adapting groove 141, the jacking protrusion 131 passes over the limit protrusion 162, and the first hook 151 and the second hook 161 are hooked with each other, so that the plug is more stable, and the reliability and stability of the integrated optical attenuator 10 are improved.

During the process of pulling out the male part 12 of one integrated optical attenuator 10 from the female part 14 of another integrated optical attenuator 10, the housing 11 of the inserted integrated optical attenuator 10 is pulled, and the first ferrule holder 15 of this dual-head attenuator slides relatively to the housing 11 by hooking the first hook 151 with the second hook 161 of the other dual-head attenuator. In the process that the shell 11 of the inserted integrated optical attenuator 10 slides relatively to the first ferrule fixing member 15, the guide inclined surface 132 of the lifting protrusion 131 presses the limit protrusion 162, so that the second hook portion 161 is lifted, and the relationship between the distance D between the inner side surface of the limit protrusion 162 and the outer side surface of the lifting protrusion 131 and the height H of the first hook portion 151 is configured such that D is equal to or greater than H, so that the second hook portion 161 can pass over the first hook portion 151 after being lifted, so that the plug 13 of the inserted integrated optical attenuator 10 can be smoothly pulled out from the adapting groove 141 of the inserted integrated optical attenuator 10, and the reliability of pulling and inserting the integrated optical attenuator 10 is improved.

In this way, the ease of fit, reliability and stability of the integrated optical attenuator 10 are improved and the optical attenuator is made to meet expected requirements.

Referring to fig. 2 to 3 and fig. 8 to 9, in some embodiments of the present application, one housing 11 may be provided with two or more male heads 12, the number of female heads 14 is equal to that of the male heads 12, one end of the female heads 14 is fixedly connected to one end of the male heads 12, and all the male heads 12 and the female heads 14 are arranged side by side. Correspondingly, each male head 12 is provided with a plug 13 and each female head 14 is provided with an adaptation groove 141. All the plug-ins 13 face towards the end facing away from the female head 14 and all the fitting grooves 141 face towards the end facing away from the male head 12. First lock pin fixing pieces 15 are slidably arranged in each plug connector 13, and each first lock pin fixing piece 15 is fixedly connected with a second lock pin fixing piece 16. The male head 12 and the female head 14 can be connected in a splicing manner or can be integrally formed.

The first ferrule holder 15 and the second ferrule holder 16 together form a holder structure for the ferrule 17, respectively, so that the ferrule 17 is stably and reliably held in the integrated optical attenuator 10.

The pair of male and female heads 12, 14 can be adapted to two ferrule members 17 to thereby make the pair of male and female heads 12, 14 meet the requirements of a two-way optical fiber.

Two or more than two male heads 12 are arranged through one shell 11, the number of female heads 14 is equal to that of the male heads 12, a plurality of pairs of male heads 12 and female heads 14 are formed, each pair of male heads 12 and female heads 14 can be matched with two ferrule pieces 17, the integrated optical attenuator 10 can meet the requirements of a plurality of pairs of two-way optical fibers, and the adaptability of the integrated optical attenuator 10 is improved.

Referring to fig. 3 to 4, in some embodiments of the present application, a first ferrule fixing protrusion 163 is disposed on a side of the second ferrule fixing member 16 facing the second hook 161, and a relationship between a distance d between an end surface of the first ferrule fixing protrusion 163 and an end of the second hook 161 and a width L of the first hook 151 and a distance L extending outward from the end of the first hook 151 is configured such that d > l+l.

The first ferrule holder 15 and the second ferrule holder 16 are both mounted in the housing 11, and the first ferrule holder 15 is slidably mounted in the plug 13, so that the second hook 161 of the second ferrule holder 16 is located in the fitting groove 141. The male head 12 and the first ferrule fixing piece 15 together form a male head assembly, and the female head 14 and the second ferrule fixing piece 16 together form a female head assembly, so that the double-head attenuator has a male head function and a female head function.

The male and female components may be disposed on an external device or an optical fiber transmission line, respectively. The male component of one integrated optical attenuator 10 may be inserted into the female component of another integrated optical attenuator 10, or the male component of an external device may be inserted into the female component of the integrated optical attenuator 10, or the male component of the integrated optical attenuator 10 may be inserted into the female component of an external device. The male head component is inserted into the female head component to form a conducting light path.

After the male component is inserted into the female component, the plug 13 is inserted into the adapting groove 141, the first hook 151 and the second hook 161 are hooked with each other, and the end face of the first ferrule fixing protrusion 163 limits the first ferrule fixing member 15. Since the relationship between the distance d between the end face of the first ferrule fixing boss 163 and the end of the second hook 161 and the width L of the first hook 151 and the distance L by which the end of the first hook 151 extends outward is configured such that d > l+l. Therefore, in the process of inserting the plug 13 into the fitting groove 141, the first hook 151 can smoothly pass over the second hook 161 and hook with the second hook 161, and the male component and the female component are reliably combined by the mutual hooking of the first hook 151 and the second hook 161 and the limit of the first ferrule fixing protrusion 163 on the first ferrule fixing member 15, so that the reliability and the connection stability of the integrated optical attenuator 10 are improved. After the plug 13 is inserted into the adapting groove 141, the plug 13 is limited by the groove wall of the adapting groove 141, so that the structural strength of the male component and the female component after being combined is improved, and the reliability and stability of the connecting structure of the integrated optical attenuator 10 are further improved.

Referring to fig. 2 to 3, in some embodiments of the present application, the socket 13 is provided with a socket groove 133, and the socket groove 133 is matched with the first ferrule fixing protrusion 163.

The male head assembly of one integrated optical attenuator 10 is inserted into the female head assembly of another integrated optical attenuator 10, and the first ferrule fixing protrusion 163 pushes the first ferrule fixing member 15 during the insertion of the plug 13 into the fitting groove 141, so that the first ferrule fixing member 15 slides relative to the plug 13, and during this process, the first ferrule fixing protrusion 163 is gradually inserted into the insertion groove 133. In this way, the plug 13 is inserted into the adapting groove 141, and the first ferrule fixing protrusion 163 is inserted into the inserting groove 133, so as to improve the structural strength of the dual-end optical fiber attenuator connection structure, thereby improving the reliability and stability thereof.

Referring to fig. 1 to 3, in some embodiments of the present application, a first cantilever 164 is disposed on two sides of the second ferrule holder 16, and the second hook 161 and the limiting protrusion 162 are disposed at an end of the first cantilever 164. The second hook 161 faces the inside of the second ferrule holder 16 and the first hook 151 faces the outside of the first ferrule holder 15. The first ferrule fixing protrusion 163 is located between the first cantilevers 164 on both sides of the second ferrule fixing member 16, and a spacing interval 165 is provided between the first cantilevers 164 and the first ferrule fixing protrusion 163. The outside of the wall of the inserting groove 133 is provided with a limiting part 134, and the limiting part 134 is matched with the limiting interval 165.

The male head assembly of one integrated optical attenuator 10 is inserted into the female head assembly of another integrated optical attenuator 10, and in the process of inserting the plug 13 into the adapting groove 141, the lifting protrusion 131 presses the limiting protrusion 162, so that the first cantilever 164 generates bending deformation, and the second hook 161 passes over the first hook 151. When the lifting protrusion 131 moves until the guide slope 132 contacts the second hook 161, the lifting protrusion 131 gradually releases the pressing of the limit protrusion 162, and the first cantilever 164 gradually returns to the shape before deformation. After the first cantilever 164 is restored to the shape before deformation, the first hook 151 is hooked with the second hook 161, so that the male component and the female component are combined and fastened. The second hook 161 faces the inner side of the second ferrule holder 16, the first hook 151 faces the outer side of the first ferrule holder 15, and after the first hook 151 and the second hook 161 are hooked, the first ferrule holder 15 is clamped by the first cantilevers 164 on both sides of the second ferrule holder 16, so that the reliability and stability of the connection structure of the integrated optical attenuator 10 are further improved. The first ferrule fixing protrusion 163 is located between the first cantilevers 164 on both sides of the second ferrule fixing member 16, and a spacing interval 165 is provided between the first cantilevers 164 and the first ferrule fixing protrusion 163. The outside of the wall of the inserting groove 133 is provided with a limiting part 134, and the limiting part 134 is matched with the limiting interval 165. After the ferrule 13 is inserted into the fitting groove 141, the first ferrule fixing protrusion 163 is inserted into the insertion groove 133, and the first ferrule fixing protrusion 163 is limited by the wall of the insertion groove 133. And the limiting portion 134 outside the wall of the plugging slot 133 is located in the limiting space 165 between the first cantilever 164 and the first ferrule fixing protrusion 163, and the limiting portion 134 is limited by the first cantilever 164 and the first ferrule fixing protrusion 163, so as to further improve the reliability and stability of the connection structure of the integrated optical attenuator 10. The first cantilever 164 is of a cantilever structure, so that the first hook 151 and the limiting protrusion 162 are both located at the end of the cantilever structure, while one end of the cantilever structure has a higher degree of freedom, and the cantilever structure is easier to deform, therefore, the plug-in connection and the separation of the male component and the female component are more facilitated through the arrangement of the first cantilever 164.

Referring to fig. 3, in some embodiments of the present application, the distance between the first cantilevers 164 is equal to the distance between the sides of the first hooks 151.

After the male head assembly of one integrated optical attenuator 10 is inserted into the female head assembly of another integrated optical attenuator 10, when the plug 13 is inserted into the adapting groove 141, the inner side wall of the first cantilever 164 limits the first hook 151 from the side, so that the second ferrule fixing member 16 limits the first ferrule fixing member 15 through the first cantilevers 164 on both sides thereof. Thus, the reliability and stability of the connection structure of the integrated optical attenuator 10 are further improved.

Referring to fig. 2 to 3, in some embodiments of the present application, a second ferrule fixing protrusion 166 is disposed on a side of the second ferrule fixing member 16 away from the second hook 161, and a third hook 167 is disposed on two sides of the second ferrule fixing protrusion 166. The first ferrule fixing member 15 is provided with a ferrule parting bead 152, ferrule fixing grooves 153 are provided on both sides of the ferrule parting bead 152, a second cantilever 155 is provided outside the ferrule fixing grooves 153, the second cantilever 155 is provided with a hook groove 154, and a third hook 167 is engaged in the hook groove 154. The second ferrule fixing protrusion 166 abuts the ferrule parting strip 152.

In the same integrated optical attenuator 10, the second ferrule fixing protrusion 166 is inserted between the second cantilevers 155 at both sides of the first ferrule fixing member 15, and the third hook 167 is snapped into the hook groove 154, at this time, the second ferrule fixing protrusion 166 abuts against the ferrule parting strip 152, so that the first ferrule fixing member 15 and the second ferrule fixing member 16 are combined and fastened, and the first ferrule fixing member 15 and the second ferrule fixing member 16 are prevented from loosening, thereby improving the stability and reliability of the structure of the integrated optical attenuator 10. The second cantilever 155 is of a cantilever structure, and when the first ferrule fixing member 15 and the second ferrule fixing member 16 are detached or installed, the second cantilever 155 of the cantilever structure is easier to deform, so that the third hook 167 can be clamped into the hook slot 154 more smoothly.

The ferrule 17 may be placed into the ferrule holding groove 153, with the ferrule spacer bars 152 and the second cantilever arms 155 limiting the ferrule 17. The first ferrule holder 15 is then connected to the second ferrule holder 16, and the ferrule 17 is further secured by the first ferrule holder 15 and the second ferrule holder 16. In this way, the ferrule 17 is stably and reliably fixed in the integrated optical attenuator 10. Because the two sides of the ferrule parting strip 152 are provided with the ferrule fixing grooves 153, one first ferrule fixing member 15 can be adapted to two ferrule members 17, so that the integrated optical attenuator 10 can meet the requirement of two-way optical fibers.

Referring to fig. 1 to 3, in some embodiments of the present application, two sides of the first ferrule holder 15 are provided with stop protrusions 156, two sides of the plug 13 are provided with stop grooves 135, and the stop grooves 135 are provided with abutment surfaces 136. When the first ferrule holder 15 is retracted into the plug 13, the stopper projection 156 abuts against the abutment surface 136.

After the male component of one integrated optical attenuator 10 is inserted into the female component of another integrated optical attenuator 10, the first ferrule fixing member 15 retracts toward the inside of the connector after the connector 13 is inserted into the fitting groove 141, so that the second ferrule fixing member 16 is inserted into the connector 13. During the plugging process, the stop groove 135 guides the stop protrusion 156 so that the plugging process is smoother. When plugged in place, the stop protrusion 156 abuts against the abutment surface 136, thereby limiting the depth of insertion of the second ferrule holder 16 into the plug 13, and preventing the first ferrule holder 15 from continuing to slide relative to the plug 13, thereby improving the structural stability of the integrated optical attenuator 10.

Referring to fig. 6, in some embodiments of the present application, a relief groove 137 is disposed on a side of the plug 13 near the adapting groove 141, the relief groove 137 is communicated with the adapting groove 141, the relief groove 137 matches with the stop protrusion 156, and the abutment surface 136 is disposed opposite to the relief groove 137 at a distance.

In the same integrated optical attenuator 10, during the process of inserting the first ferrule holder 15 into the ferrule 13, the avoidance groove 137 guides the stop protrusion 156, so that on one hand, the first ferrule holder 15 can more smoothly enter the ferrule 13, and on the other hand, the inner wall of the ferrule 13 is prevented from pressing the stop protrusion 156 to increase the friction between the first ferrule holder 15 and the inner wall of the ferrule 13, thereby making the first ferrule holder 15 difficult to slide in the ferrule 13. When the stop protruding portion 156 reaches the end of the avoidance groove 137, the stop protruding portion 156 is pressed against the inner wall of the plug 13, so that the first ferrule fixing member 15 and the plug 13 are forced to deform, the first ferrule fixing member 15 is pushed into the plug 13, the stop protruding portion 156 passes over the inner wall of the plug 13, and reaches the stop groove 135, and the first ferrule fixing member 15 is inserted into the plug 13. When the housing 11 or the first ferrule holder 15 is pulled, the stop protrusion 156 abuts against the abutment surface 136 to prevent the first ferrule holder 15 from being pulled out of the plug 13, thereby improving the reliability of the integrated optical attenuator 10.

Referring to fig. 8, in some embodiments of the present application, adjacent adapting grooves 141 are communicated with each other, and adjacent connectors 13 are integrally formed.

By communicating the fitting grooves 141 with each other, the integrally formed plug 13 can smoothly enter the fitting grooves 141, thereby ensuring the compatibility of the integrated optical attenuator 10. By integrally molding the plug connectors 13 arranged side by side, the structural strength of the housing 11 is further improved, and the size of the housing 11 is reduced, so that the structure of the integrated optical attenuator 10 is more compact.

Referring to fig. 9, in some embodiments of the present application, the sum of the widths of all the connectors 13 is equal to the sum of the widths of all the fitting grooves 141.

After one integrated optical attenuator 10 is inserted into another integrated optical attenuator 10, the sum of the widths of all the plug connectors 13 is equal to the sum of the widths of all the adapting grooves 141, so that the plug connectors 13 can be limited by the side walls of the adapting grooves 141, further, the looseness of the plug-in structure is prevented, the compactness of the integrated optical attenuator 10 is further improved, the occupied space of the integrated optical attenuator 10 is reduced, and the space layout during wiring is facilitated.

Referring to fig. 3, in some embodiments of the present application, the first cantilever 164 is disposed on two sides of the second ferrule holder 16, the second hook 161 and the limiting protrusion 162 are disposed at the end of the first cantilever 164, and the distance between the first cantilever 164 and the groove wall of the adapting groove 141 is greater than or equal to the protruding distance of the second hook 161.

During the insertion or extraction process, the lifting protrusion 131 presses the limit protrusion 162, so that the limit protrusion 162 and the second hook 161 are lifted synchronously, and the first cantilever 164 is deformed. The distance between the first cantilever 164 and the groove wall of the adapting groove 141 is greater than or equal to the protruding distance of the second hook 161, so that enough space is ensured in the adapting groove 141 to deform the first cantilever 164, the first cantilever 164 is prevented from being limited in the adapting groove 141 during the deformation of the first cantilever 164, and the unhooking process can be smoothly performed.

Referring to fig. 3, in some embodiments of the present application, the adapting groove 141 is provided with a clearance groove 130 at the first cantilever 164, and the depth of the clearance groove 130 is greater than or equal to the protruding distance of the second hook 161.

Through setting up of keeping away the position groove 130, provide sufficient space for the deformation of first cantilever 164, avoid adapting groove 141 to cause the hindrance to the deformation of first cantilever 164, improve the reliability of plug process, make the plug process more smooth and easy.

In some embodiments of the present application, the distance between the outer sides of the first cantilever 164 is equal to the width of the plug 13, and the width of the plug 13 is equal to the width of the fitting groove 141.

During the process of inserting one integrated optical attenuator 10 into another integrated optical attenuator 10, the plug 13 is limited and guided by the groove wall of the plug groove 133, so as to prevent the plugging process from being blocked. By limiting the distance between the outer sides of the first cantilever 164 on both sides of the second ferrule holder 16, the integrated optical attenuator 10 is made more compact.

Referring to fig. 1 to 3 and 7, in some embodiments of the present application, a first guiding strip 138 is disposed on one side of the plug 13, and a second guiding strip 139 is disposed on the other side of the plug 13. The side wall of one side of the adaptation groove 141 is provided with a first guide groove 142, and the side wall of the other side of the adaptation groove 141 is provided with a second guide groove 143. The first guide bar 138 mates with the first guide slot 142 and the second guide bar 139 mates with the second guide slot 143. The width of the first guide groove 142 is greater than the width of the second guide groove 143.

The male head assembly of one integrated optical attenuator 10 is inserted into the female head assembly of another integrated optical attenuator 10, and in the process of inserting the plug 13 into the adapting groove 141, the first guiding strip 138 slides inside the adapting groove 141 under the guiding of the first guiding groove 142, and the second guiding strip 139 slides inside the adapting groove 141 under the guiding of the second guiding groove 143, so that the plug 13 can enter the adapting groove 141 more smoothly. Since the width of the first guide groove 142 is greater than the width of the second guide groove 143, and the first guide bar 138 is matched with the first guide groove 142 and the second guide bar 139 is matched with the second guide groove 143, the width of the first guide bar 138 is also greater than the width of the second guide bar 139. In this way, the fool-proof effect is achieved by the difference of the widths of the first guide groove 142 and the second guide groove 143, so that the plug 13 is prevented from being inserted into the adapting groove 141 at an incorrect angle, and the reliability of the integrated optical attenuator 10 is further improved.

Referring to fig. 3, in some embodiments of the present application, the relationship between the depth Q of the mating groove 141, the length M of the plug 13, and the length N of the portion of the second ferrule holder 16 within the mating groove 141 is configured such that M < Q < m+n.

The male head component of one integrated optical attenuator 10 is inserted into the female head component of another integrated optical attenuator 10, because the relation among the depth Q of the adapting groove 141, the length M of the plug 13 and the length N of the second plug-in fixing piece 16 in the adapting groove 141 is configured such that M < Q < M+N, when the plug 13 is inserted into the adapting groove 141, the end of the plug 13 is inserted into the second plug-in fixing piece 16, and the plug 13 is limited by the inner wall of the plug groove 133 and the second plug-in fixing piece 16, so that the structural strength of the plug structure of the integrated optical attenuator 10 is enhanced, and the stability and reliability of the plug structure of the integrated optical attenuator 10 are improved.

In the description of the present specification, reference to the terms "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the foregoing description of the preferred embodiment of the utility model is provided for the purpose of illustration only, and is not intended to limit the utility model to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (10)

1. An integrated optical attenuator, comprising:

The shell comprises a male head and a female head, the male head is provided with an adapter, the female head is provided with an adapter groove, the adapter is matched with the adapter groove, jacking protrusions are arranged on two sides of the adapter, and guide inclined planes are arranged on the inner sides of the jacking protrusions;

The first plug pin fixing piece is slidably arranged in the plug connector, a first hook part is arranged at the end part of the first plug pin fixing piece, the jacking protrusions are positioned on two sides of the first hook part, and in the sliding process of the first plug pin fixing piece relative to the shell, the first hook part can move along the sliding direction of the first plug pin fixing piece in the range of the jacking protrusions;

The second ferrule fixing piece is connected with one end, far away from the first hook part, of the first ferrule fixing piece, a second hook part is arranged at one end, far away from the first ferrule fixing piece, of the second ferrule fixing piece, the second hook part is positioned in the adapting groove, the first hook part is adapted to the second hook part, and limit protruding parts are arranged on two sides of the second hook part;

Wherein each shell is provided with two or more than two male heads, the number of the female heads is equal to that of the male heads, one end of each female head is fixedly connected with one end of each male head, and all the male heads and the female heads are arranged side by side;

The relation between the distance D between the inner side surface of the limit convex part and the outer side surface of the jacking convex part and the height H of the first hook part is configured as D is more than or equal to H.

2. The integrated optical attenuator of claim 1, wherein adjacent said mating grooves are in communication with each other and adjacent said plug is integrally formed.

3. The integrated optical attenuator of claim 2, wherein the sum of the widths of all of the connectors is equal to the sum of the widths of all of the mating grooves.

4. The integrated optical attenuator according to claim 1, wherein first cantilevers are disposed on both sides of the second ferrule fixing member, the second hook portion and the limiting protrusion portion are disposed at end portions of the first cantilevers, and a distance between the first cantilevers and a groove wall of the fitting groove is greater than or equal to a protruding distance of the second hook portion.

5. The integrated optical attenuator of claim 4, wherein the adapter groove is provided with a clearance groove at the first cantilever, and the depth of the clearance groove is greater than or equal to the protruding distance of the second hook.

6. The integrated optical attenuator of claim 5, wherein the distance between the outer sides of the first cantilevers is equal to the width of the plug, and the width of the plug is equal to the width of the mating groove.

7. The integrated optical attenuator according to claim 1, wherein two sides of the first ferrule holder are provided with stop protrusions, two sides of the plug are provided with stop grooves, and the stop grooves are provided with abutment surfaces;

When the first ferrule fixing piece retracts towards the inside of the plug connector, the stop protruding portion abuts against the abutting surface.

8. The integrated optical attenuator according to claim 7, wherein an avoidance groove is formed in a side, close to the adaptation groove, of the plug connector, the avoidance groove is communicated with the adaptation groove, the avoidance groove is matched with the stop protrusion, and the abutment surface is arranged opposite to the avoidance groove at an interval.

9. The integrated optical attenuator of claim 1, wherein one side of the plug is provided with a first guide bar and the other side of the plug is provided with a second guide bar;

The side wall of one side of the adapting groove is provided with a first guide groove, and the side wall of the other side of the adapting groove is provided with a second guide groove;

The first guide strip is matched with the first guide groove, and the second guide strip is matched with the second guide groove;

The width of the first guide groove is larger than that of the second guide groove.

10. The integrated optical attenuator of claim 1, wherein the relationship between the depth Q of the mating groove, the length M of the ferrule, and the length N of the second ferrule holder within the mating groove is configured such that M < Q < m+n.