CN221042884U - Passive wavelength division device - Google Patents

Abstract

The utility model discloses passive wavelength division equipment, which comprises a passive wavelength division equipment main body, a fixing frame and an assembly structure; the main body of the passive wavelength division device is connected with the fixing frame through an assembly structure; the assembly structure comprises a first limiting piece, a second limiting piece and a third limiting piece, wherein the first limiting piece is fixed on the fixing frame, the second limiting piece is fixed on the passive wavelength division device main body, the first limiting piece is provided with a limiting groove, the second limiting piece is inserted into the limiting groove along the first direction, and the third limiting piece is arranged on the first limiting piece and the second limiting piece in a penetrating mode so as to limit the second limiting piece to be separated from the first limiting piece, and the passive wavelength division device main body is fixedly connected with the fixing frame. The passive wavelength division device provided by the utility model simplifies the disassembly and assembly operation procedures between the passive wavelength division device main body and the fixing frame, and can realize rapid plug connection, disassembly and separation of the passive wavelength division device main body and the fixing frame.

Description

Passive wavelength division device

Technical Field

The present utility model relates to the technical field of communication devices, and more particularly, to a passive wavelength division device.

Background

The working principle of the passive wavelength division technology is that optical signals with different wavelengths and certain information are coupled through the application of the WDM (wavelength division multiplexing) technology, so that a beam is formed, and the information is transmitted through an optical fiber. In general, WDM technology can realize transmission of multiple signals by a single optical fiber at the same time, and WDM technology can perform information transmission by adopting light with a specific wavelength matched with the signal for each signal, and separate optical signals with different wavelengths at a receiving end.

The existing passive wavelength division equipment chassis mostly adopts an assembled structure, firstly, the passive wavelength division equipment main body is inserted into a chute of a chassis fixing frame, and then, the passive wavelength division equipment main body and the fixing frame are connected together by using fasteners such as screws or rivets. In the actual use process, when the non-source wavelength division equipment cabinet is assembled and disassembled, the fastening piece is required to be frequently disassembled and assembled by adopting the connecting structure, and the problems of complex operation procedures and time and labor waste exist.

Disclosure of utility model

In view of the above problems, the embodiments of the present utility model provide a passive wavelength division device, in which a second limiting member is disposed on a passive wavelength division device main body, a first limiting member is disposed on a fixing frame, the second limiting member is inserted into a limiting groove of the first limiting member, and a third limiting member is disposed through the first limiting member and the second limiting member, so that the passive wavelength division device main body and the fixing frame can be quickly connected in an inserting manner and detached from each other, the disassembly operation procedure of the passive wavelength division device is simplified, time and labor are saved, and the working efficiency is improved.

The embodiment of the application provides passive wavelength division equipment, which comprises the following components: the device comprises a main body of the passive wavelength division device, a fixing frame and an assembling structure;

The passive wavelength division device main body is connected with the fixing frame through the assembly structure;

The assembly structure comprises a first limiting part, a second limiting part and a third limiting part, wherein the first limiting part is fixed on the fixing frame, the second limiting part is fixed on the passive wavelength division device main body, the first limiting part is provided with a limiting groove, the second limiting part is inserted into the limiting groove along a first direction, and the third limiting part penetrates through the first limiting part and the second limiting part to limit the second limiting part to be separated from the first limiting part, so that the passive wavelength division device main body is fixedly connected with the fixing frame.

The passive wavelength division device main body and the fixing frame in the prior art are connected by adopting the fastening pieces, the fastening pieces are required to be frequently disassembled and assembled in the actual use process, time and labor are wasted, and the working efficiency is low. When the main body of the passive wavelength division device is assembled and connected with the fixing frame, a user firstly inserts the second limiting piece into the limiting groove, and then wears the third limiting piece on the first limiting piece and the second limiting piece, namely the user can fixedly connect the main body of the passive wavelength division device with the fixing frame by executing two insertion operations. When the main body of the passive wavelength division device and the fixed frame are detached and separated, a user firstly pulls out the third limiting piece to be separated from the second limiting piece, and then pulls out the second limiting piece to be separated from the limiting groove, namely the user can detach and separate the main body of the passive wavelength division device and the fixed frame by carrying out pulling-out operation twice. Therefore, the passive wavelength division device can be assembled and disassembled from the main body and the fixing frame of the passive wavelength division device rapidly by adopting simple inserting and pulling operations, so that the time and the labor are saved, and the working efficiency is high.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate and do not limit the utility model.

FIG. 1 is a schematic diagram of an exemplary passive wavelength division device according to the present application;

FIG. 2 is a schematic view of a part of the enlarged structure of the portion A in FIG. 1;

FIG. 3 is a schematic structural view of a fixing frame according to an embodiment of the application;

Fig. 4 is a schematic structural diagram of a passive wavelength division device body according to an embodiment of the present application.

Reference numerals:

1-assembly structure, 11-first limit piece, 111-limit groove, 112-jack, 113-fixed groove, 12-second limit piece, 121-limit hole, 13-third limit piece, 14-guide structure, 141-outer guide piece, 1411-inner cavity, 1412-guide chute, 142-inner guide piece, 143-elastic reset piece, 15-hand piece, 16-extension board, 17-limit clamping frame, 18-limit clamping board, 2-passive wavelength division device main body, 3-fixing frame

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in detail hereinafter with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be arbitrarily combined with each other.

Referring to fig. 1-4, schematic structural diagrams of an embodiment of the passive wavelength division device according to the present application are shown. Fig. 1 is a schematic structural diagram of an apparatus for passive wavelength division according to an embodiment of the present application, and fig. 2 is a schematic partial enlarged structural diagram of a portion a in fig. 1. The first direction and the second direction are defined in fig. 1 with respect to the azimuth relationship of the passive wavelength division device of the present application. As shown in fig. 1-2, an embodiment of the present application provides a passive wavelength division device, including a passive wavelength division device main body 2, a fixing frame 3, and an assembly structure 1; the main body 2 of the passive wavelength division device is connected with the fixed frame 3 through the assembly structure 1; fig. 2 shows a schematic view of a partial enlarged structure of the assembly structure 1, where the assembly structure 1 includes a first limiting member 11, a second limiting member 12 and a third limiting member 13, the first limiting member 11 is fixed on the fixing frame 3, the second limiting member 12 is fixed on the passive wavelength division device main body 2, the first limiting member 11 is provided with a limiting groove 111, the second limiting member 12 is inserted into the limiting groove 111 along a first direction, and the third limiting member 13 is arranged on the first limiting member 11 and the second limiting member 12 in a penetrating manner so as to limit the second limiting member 12 to separate from the first limiting member 11, so that the passive wavelength division device main body 2 is fixedly connected with the fixing frame 3.

Specifically, the passive wavelength division device provided by the embodiment of the application adopts the assembly structure 1 to connect the passive wavelength division device main body 2 and the fixing frame 3 together, the assembly structure 1 comprises a first limiting piece 11 arranged on the fixing frame 3 and a second limiting piece 12 arranged on the passive wavelength division device main body 2, the second limiting piece 12 is inserted into a limiting groove 111 of the first limiting piece 11, and the third limiting piece 13 is arranged in the first limiting piece 11 and the second limiting piece 12 in a penetrating manner. Therefore, when the passive wavelength division device main body 2 and the fixing frame 3 according to the embodiment of the present application are assembled and connected, a user first inserts the second limiting member 12 into the limiting groove 111, and then inserts the third limiting member 13 onto the first limiting member 11 and the second limiting member 12, that is, the user performs two insertion operations, so that the connection between the passive wavelength division device main body 2 and the fixing frame 3 can be achieved. When the passive wavelength division device main body 2 and the fixed frame 3 in the embodiment of the application are detached, a user firstly pulls out the third limiting piece 13 to be separated from the second limiting piece 12, and then pulls out the second limiting piece 12 to be separated from the limiting groove 111, namely, the detachment and the separation between the passive wavelength division device main body 2 and the fixed frame 3 can be realized by the user executing the pulling-out operation twice. Therefore, the passive wavelength division device of the embodiment of the application can quickly assemble and disassemble the passive wavelength division device main body 2 and the fixing frame 3 by adopting simple insertion and pulling operation, thereby saving time and labor and having high working efficiency. The passive wavelength division device of the embodiment of the application solves the following problems: the passive wavelength division device main body 2 and the fixing frame 3 in the prior art are connected by adopting fasteners, the fasteners are required to be frequently and time-consuming and laboriously disassembled and assembled in the actual use process, and the working efficiency is low.

The first limiting member 11 may be, but not limited to, a block structure (e.g., a cuboid block structure), a plate structure, or a column structure. The second limiting member 12 may be, but is not limited to, a plate-like structure, a rod-like structure, a columnar structure, a block-like structure, or the like. The third stopper 13 may be, but is not limited to, a rod-like structure, a plate-like structure, a column-like structure, or the like.

In an exemplary embodiment, as shown in fig. 2, the first stopper 11 is provided with an insertion hole 112 communicating with the stopper groove 111, and a portion of the second stopper 12 inserted into the stopper groove 111 is provided with a stopper hole 121.

The third limiting member 13 is inserted into the insertion hole 112 and the limiting hole 121 along a second direction, and the second direction is perpendicular to the first direction.

Specifically, the third limiting member 13 is disposed to be inserted into the insertion hole 112 of the first limiting member 11 and the limiting hole 121 of the second limiting member 12 along the second direction, the limiting groove 111 can limit the movement of the second limiting member 12 along the second direction, and the third limiting member 13 can limit the movement of both the first limiting member 11 and the second limiting member 12 along the first direction. Since the second direction is perpendicular to the first direction, the first and second stoppers 11 and 12 are fixedly coupled together by the third stopper 13. The structure is simple in design and good in assembly connection reliability. In addition, the insertion hole 112 and the limiting hole 121 also have a limiting guide function for the third limiting member 13.

In an exemplary embodiment, as shown in fig. 2, the first limiting member 11 is further provided with a fixing groove 113, the fixing groove 113 is disposed opposite to the insertion hole 112, the limiting hole 121 is located between the insertion hole 112 and the fixing groove 113, and one end of the third limiting member 13 is disposed to sequentially pass through the insertion hole 112 and the limiting hole 121, be inserted into the fixing groove 113, and be limited in the fixing groove 113.

Specifically, the fixing groove 113 is formed in the side, opposite to the insertion hole 112, of the first limiting member 11, one end of the third limiting member 13 is limited in the fixing groove 113, and therefore the third limiting member 13 can be prevented from sliding downwards in the limiting groove 111 along the second direction, and the passive wavelength division device main body 2 and the fixing frame 3 are more stably and firmly assembled and connected.

In an exemplary embodiment, as shown in fig. 2, the third limiting member 13 is movably connected with the first limiting member 11.

The mounting structure 1 further comprises a guiding structure 14, the guiding structure 14 being arranged to guide the third limiting member 13 to reciprocate relative to the first limiting member 11.

Specifically, the third limiting piece 13 is movably connected with the first limiting piece 11, so that a user can quickly connect and disconnect the third limiting piece 13 with the first limiting piece 11 and the second limiting piece 12 according to needs, and only the third limiting piece 13 is required to be operated to be inserted into and away from the first limiting piece 11. The guide structure 14 is provided on the assembly structure 1 so as to ensure that the third stopper 13 can be smoothly penetrated to the first stopper 11 and the second stopper 12 and smoothly separated from the second stopper 12, and the structural design can prevent the third stopper 13 from being deviated during the reciprocating motion with respect to the first stopper 11.

In an exemplary embodiment, as shown in fig. 2, the guiding structure 14 includes an outer guiding element 141 and an inner guiding element 142, the outer guiding element 141 is fixedly connected with the first limiting element 11, an inner cavity 1411 communicating with the limiting groove 111 is formed in the outer guiding element 141, the third limiting element 13 is penetrated through the outer guiding element 141 and inserted into the limiting groove 111, the inner guiding element 142 is fixedly connected with the third limiting element 13 and is located in the inner cavity 1411, and the inner guiding element 142 is slidably connected with the outer guiding element 141 so as to guide the third limiting element 13 to reciprocate relative to the first limiting element 11.

Specifically, the inner guide member 142 is fixedly connected with the third limiting member 13 and is located in the inner cavity 1411, and the inner guide member 142 is slidably connected with the outer guide member 141, so as to ensure that the third limiting member 13 moves more stably and does not deflect or swing during the reciprocating movement relative to the inner cavity 1411 of the guide structure 14, the first limiting member 11 and the second limiting member 12.

Wherein the outer guide 141 may be, but is not limited to, a cylindrical structure, a prismatic structure, etc. The inner guide 142 may be, but is not limited to, a plate-like structure, a column-like structure, a block-like structure, or the like.

In an exemplary embodiment, as shown in fig. 2, the inner sidewall of the outer guide member 141 is provided with a guide sliding groove 1412, and the inner guide member 142 is a guide slider, which is limited to the guide sliding groove 1412 and can reciprocally slide along the guide sliding groove 1412.

Specifically, the guide sliding groove 1412 is provided on the inner side wall of the outer guide 141, and the inner guide 142 is provided as a guide slider, which is simple in structural design and easy to manufacture and assemble. It will be appreciated that other sliding connections may be used for the outer and inner guides 141, 142 of the present application.

In an exemplary embodiment, as shown in fig. 2, the guiding structure 14 further includes an elastic restoring member 143, where the elastic restoring member 143 is disposed in the inner cavity 1411, and one end of the elastic restoring member 143 abuts against the inner guiding member 142, and the other end abuts against an end of the inner cavity 1411 away from the limiting slot 111, and the elastic restoring member 143 is configured to drive the third limiting member 13 to move in a direction of being inserted into the first limiting member 11 and the second limiting member 12 by using a restoring elastic force thereof.

Specifically, an elastic reset piece 143 is disposed between one end of the inner cavity 1411 far away from the limiting groove 111 and the inner guiding piece 142, so that the elastic reset piece 143 drives the inner guiding piece 142 and the third limiting piece 13 to move towards one side close to the limiting groove 111, and after the assembly structure 1 is assembled and connected together, the first limiting piece 11, the second limiting piece 12 and the third limiting piece 13 can be stably inserted together, and separation of the third limiting piece 13 and the second limiting piece 12 is avoided. And, when the user needs to detach the third limiting member 13, the first limiting member 11 and the second limiting member 12, the end, far away from the limiting groove 111, of the third limiting member 13 is pulled, the elastic resetting member 143 is compressed against the elastic force of the elastic resetting member 143, and then the third limiting member 13 and the second limiting member 12 can be separated, and then the second limiting member 12 is pulled out from the limiting groove 111, so that the main body 2 and the fixing frame 3 of the passive wavelength division device are separated, and the structure design is simple and easy to operate and execute.

The elastic restoring member 143 may be a spring, which is sleeved on the third limiting member 13.

In an exemplary embodiment, as shown in fig. 2 and 3, the assembly structure 1 further includes a hand piece 15, where the hand piece 15 is connected to the third limiting member 13 and configured to be acted upon to move the third limiting member 13. The handpiece 15 may be, but is not limited to, a plate-like structure, a strip-like structure, or the like. The outer wall surface of the hand piece 15 may be provided with a rough portion for slip prevention, such as a texture or the like.

Specifically, as shown in fig. 2, a hand piece 15 is provided at an end of the third stopper 13 remote from the stopper groove 111, so that a user can easily perform the assembling and disassembling operations of the main body 2 and the fixing frame 3 of the passive wavelength division device.

In an exemplary embodiment, as shown in fig. 1, the passive wavelength division device body 2 and the fixing frame 3 are stacked along a first direction, the number of the assembly structures 1 is two, and the two assembly structures 1 are respectively located at two sides of the fixing frame 3 in a second direction, wherein the first direction is a thickness direction of the fixing frame 3, and the second direction is a length direction of the fixing frame 3.

Specifically, the assembly structures 1 are respectively provided at both sides of the second direction of the fixing frame 3 so that the connection between the passive wavelength division device body 2 and the fixing frame 3 is more stable and firm. It will be appreciated that the number and distribution positions of the assembly structures 1 may be specifically set by the user according to actual requirements, and are not limited herein.

In an exemplary embodiment, as shown in fig. 1, 2 and 4, the length of the passive wavelength division device body 2 in the second direction is smaller than the length of the fixing frame 3, the assembly structure 1 further includes an extension plate 16, and the second limiting member 12 is disposed at an end of the extension plate 16 away from the passive wavelength division device body 2 and is indirectly connected to the passive wavelength division device body 2 through the extension plate 16.

Specifically, in the case where the length of the passive wavelength division device body 2 in the second direction is smaller than the length of the mount 3, the second stopper 12 may be connected to the passive wavelength division device body 2 by the extension plate 16, and it is ensured that the second stopper 12 can be inserted into the stopper groove 111 in the first direction. If the length of the passive wavelength division device body 2 in the second direction is greater than or equal to the length of the fixing frame 3, the second stopper 12 may be directly connected to the passive wavelength division device body 2, and then the second stopper 12 may be inserted into the stopper groove 111 along the first direction.

In one exemplary embodiment, the second stop member 12 and the extension plate 16 may be of unitary construction. The second limiting piece 12 and the extension plate 16 are designed into an integrated structure, so that the processing and the manufacturing are convenient, and the manufacturing and assembling procedures are simplified.

In an exemplary embodiment, as shown in fig. 3 and 4, one of the end surface of the mount 3 facing the passive wavelength division device body 2 and the end surface of the passive wavelength division device body 2 facing the mount 3 is provided with a limit protrusion, and the other is provided with a limit groove, and the limit protrusion is connected with the limit groove in a matching manner.

Specifically, on the basis that the passive wavelength division device main body 2 and the fixing frame 3 are connected together through the assembly structure 1, the passive wavelength division device main body 2 and the fixing frame 3 are connected with the limiting groove in a matched mode through the limiting protrusions, and the limiting protrusions and the limiting groove are connected in a matched mode to serve as an auxiliary connection mode, so that the passive wavelength division device main body 2 and the fixing frame 3 are connected more firmly and stably.

In an exemplary embodiment, as shown in fig. 3 and fig. 4, a limiting clamping frame 17 is convexly arranged on the end face of the fixing frame 3, facing the passive wavelength division device main body 2, a limiting groove is surrounded by the limiting clamping frame 17, a limiting clamping plate 18 is convexly arranged on the end face of the passive wavelength division device main body 2, facing the fixing frame 3, and the limiting clamping plate 18 forms a limiting protrusion.

Specifically, limit grooves are formed in the surrounding mode of the limit clamping frames 17, limit protrusions are formed on the limit clamping plates 18, and the structure is simple in design, easy to assemble and good in stability. It will be appreciated that the spacing groove and spacing protrusion may be designed in other configurations and shapes, without limitation.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "the sides", "the opposite", "four corners", "the periphery", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the structures referred to have a specific direction, are configured and operated in a specific direction, and thus are not to be construed as limiting the present utility model.

In the description of embodiments of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," "assembled" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, and may also be in communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Although the embodiments of the present utility model are described above, the embodiments are only used for facilitating understanding of the present utility model, and are not intended to limit the present utility model. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is defined by the appended claims.

Claims (12)

1. A passive wavelength division device, comprising: the device comprises a main body (2) of the passive wavelength division device, a fixing frame (3) and an assembling structure (1);

The passive wavelength division device main body (2) is connected with the fixing frame (3) through the assembly structure (1);

The assembly structure (1) comprises a first limiting part (11), a second limiting part (12) and a third limiting part (13), wherein the first limiting part (11) is fixed on the fixing frame (3), the second limiting part (12) is fixed on the passive wavelength division device main body (2), the first limiting part (11) is provided with a limiting groove (111), the second limiting part (12) is inserted into the limiting groove (111) along a first direction, and the third limiting part (13) is arranged on the first limiting part (11) in a penetrating mode and the second limiting part (12) in a limiting mode, so that the second limiting part (12) is separated from the first limiting part (11), and the passive wavelength division device main body (2) is fixedly connected with the fixing frame (3).

2. The passive wavelength division device of claim 1, wherein: the first limiting piece (11) is provided with an inserting hole (112) communicated with the limiting groove (111), and a limiting hole (121) is formed in the part, inserted into the limiting groove (111), of the second limiting piece (12);

the third limiting piece (13) is inserted into the insertion hole (112) and the limiting hole (121) along a second direction, and the second direction is perpendicular to the first direction.

3. The passive wavelength division device of claim 2, wherein: the first limiting part (11) is further provided with a fixing groove (113), the fixing groove (113) is opposite to the jack (112), the limiting hole (121) is located between the jack (112) and the fixing groove (113), one end of the third limiting part (13) penetrates through the jack (112) in sequence, and the limiting hole (121) is inserted into the fixing groove (113) and is limited in the fixing groove (113).

4. A passive wavelength division device according to any one of claims 1 to 3 wherein: the third limiting piece (13) is movably connected with the first limiting piece (11);

The assembly structure (1) further comprises a guiding structure (14), wherein the guiding structure (14) is arranged to guide the third limiting piece (13) to reciprocate relative to the first limiting piece (11).

5. The passive wavelength division device of claim 4, wherein: the guide structure (14) comprises an outer guide piece (141) and an inner guide piece (142), the outer guide piece (141) is fixedly connected with the first limiting piece (11), an inner cavity (1411) communicated with the limiting groove (111) is formed in the outer guide piece (141), the third limiting piece (13) penetrates through the outer guide piece (141) and is inserted into the limiting groove (111), the inner guide piece (142) is fixedly connected with the third limiting piece (13) and is located in the inner cavity (1411), and the inner guide piece (142) is in sliding connection with the outer guide piece (141) so as to guide the third limiting piece (13) to reciprocate relative to the first limiting piece (11).

6. The passive wavelength division device of claim 5, wherein: the inner side wall of the outer guide member (141) is provided with a guide chute (1412), the inner guide member (142) is a guide slide block, and the guide slide block is limited on the guide chute (1412) and can slide back and forth along the guide chute (1412).

7. The passive wavelength division device of claim 5, wherein: the guide structure (14) further comprises: the elastic reset piece (143) is arranged in the inner cavity (1411), one end of the elastic reset piece (143) is propped against the inner guide piece (142), the other end of the elastic reset piece is propped against one end of the inner cavity (1411) away from the limit groove (111), and the elastic reset piece (143) is arranged to drive the third limit piece (13) to move towards the direction of inserting into the first limit piece (11) and the second limit piece (12) by means of reset elastic force of the elastic reset piece.

8. A passive wavelength division device according to any one of claims 1 to 3 wherein: the assembly structure (1) further comprises a hand piece (15), wherein the hand piece (15) is connected with the third limiting piece (13) and is arranged to be exerted with an acting force to drive the third limiting piece (13) to move.

9. A passive wavelength division device according to any one of claims 1 to 3 wherein: the passive wavelength division device comprises a passive wavelength division device main body (2) and a fixing frame (3), wherein the passive wavelength division device main body and the fixing frame (3) are stacked along the first direction, the number of the assembly structures (1) is two, the two assembly structures (1) are respectively located at two sides of the fixing frame (3) in the second direction, the first direction is the thickness direction of the fixing frame (3), and the second direction is the length direction of the fixing frame (3).

10. The passive wavelength division device of claim 9, wherein: the length of the passive wavelength division device main body (2) in the second direction is smaller than the length of the fixing frame (3), the assembly structure (1) further comprises an extension plate (16), and the second limiting piece (12) is arranged at one end, far away from the passive wavelength division device main body (2), of the extension plate (16) and is indirectly connected with the passive wavelength division device main body (2) through the extension plate (16).

11. The passive wavelength division device of claim 1, wherein: the passive wavelength division device comprises a passive wavelength division device body (2) and a fixing frame (3), wherein one of the end face of the fixing frame (3) facing the passive wavelength division device body (2) and the end face of the passive wavelength division device body (2) facing the fixing frame (3) is provided with a limiting protrusion, the other one of the end faces of the fixing frame is provided with a limiting groove, and the limiting protrusion is connected with the limiting groove in a matched mode.

12. The passive wavelength division device of claim 11, wherein: the passive wavelength division device comprises a fixed frame (3), a limiting clamping frame (17) is arranged on the end face of the passive wavelength division device body (2) in a protruding mode, a limiting groove is formed in the limiting clamping frame (17) in a surrounding mode, a limiting clamping plate (18) is arranged on the end face of the passive wavelength division device body (2) in a protruding mode on the end face of the fixed frame (3), and the limiting clamping plate (18) is formed in the limiting protrusion.