LC adapter and optical transmission device

Abstract

The utility model discloses an LC adapter and a light transmission device, the LC adapter comprises a housing and a buckle cover, one end of the housing is provided with a first accommodation groove, one side groove wall of the first accommodation groove is provided with an installation port, and one side wall surface of the installation port close to the notch of the first accommodation groove is provided with an assembly port. Assembling grooves are formed in two opposite outer side walls, adjacent to the mounting opening, of the shell; a clamping tongue is arranged at one end of the buckling cover, the clamping tongue is inserted into the assembling opening, the two opposite ends, adjacent to the clamping tongue, of the buckling cover are bent to form protective plates, and the protective plates are assembled in the corresponding assembling grooves. According to the scheme, the buckling cover is small in assembling and disassembling difficulty, one-step in-place installation can be achieved, the part damage rate caused by assembling is low, and the production material cost and the assembling time cost can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber adapters, in particular to an LC adapter and optical transmission equipment. Background Art

[0002] LC adapter is a small fiber optic adapter, usually used to connect fiber optic transceivers, fiber optic switches and other equipment. LC adapter is easy to plug and play, small in size and high in installation density.

[0003] The existing LC adapter can be separated into a shell and a buckle cover. The shell is provided with an installation port for facilitating the installation of internal parts. The buckle cover is installed on the installation port of the shell. Clamps are provided on opposite sides of the buckle cover. The two clamps are clamped and connected to opposite sides of the shell. In this way, when installing the buckle cover to the shell, it is necessary to ensure that the two clamps are successfully clamped at the same time as much as possible to avoid the clamping of one clamp on the other side failing to be clamped in place. At this time, forced assembly is likely to cause the risk of clamp breakage, and the parts damage rate is high. Similar problems will also be faced when removing the buckle cover. Utility Model Content

[0004] The main purpose of the utility model is to provide an LC adapter, which is intended to facilitate assembly.

[0005] To achieve the above object, the utility model provides an LC adapter, comprising:

[0006] A housing, wherein a first receiving groove is formed at one end of the housing, a mounting opening is formed on a side wall of the first receiving groove, an assembly opening is formed on a side wall of the mounting opening close to the first receiving groove, and assembly grooves are formed on two opposite outer side walls of the housing adjacent to the mounting opening; and

[0007] A buckle cover, one end of which is provided with a latch tongue, the latch tongue being inserted into the assembly opening, the buckle cover being bent at opposite ends adjacent to the latch tongue to form a guard plate, the guard plate being assembled in the corresponding assembly groove.

[0008] In some embodiments of the present invention, a guide protrusion is provided on one side of the latch tongue facing the first receiving groove, and both sides of the guide protrusion in a direction close to and away from the bottom of the first receiving groove are provided with guide inclined surfaces.

[0009] In some embodiments of the utility model, a buckle interface is provided on a wall surface of one side of the installation opening opposite to the assembly opening;

[0010] An elastic buckle is arranged on one side of the buckle cover opposite to the latch tongue, and the elastic buckle is latched in the buckle interface.

[0011] In some embodiments of the utility model, the wall surface of the installation port is also provided with a snap-on protrusion, and the snap-on protrusion is located on the side of the snap interface away from the first accommodating groove, and the elastic buckle includes a hook portion and a groove portion, the hook portion is snapped into the snap interface, and the groove portion cooperates with the snap-on protrusion.

[0012] In some embodiments of the present utility model, the shell is provided with a plurality of spaced-apart assembly openings, and a plurality of the latching tongues are provided, and the plurality of the latching tongues are arranged at intervals and matched with the corresponding assembly openings.

[0013] In some embodiments of the utility model, a latching protrusion is convexly provided on the inner side surface of the guard plate, and a latching hole is provided on the groove wall of the assembly groove, and the latching protrusion is latched in the latching hole.

[0014] In some embodiments of the present utility model, the LC adapter further includes a dust cover and a reset member, a rotating shaft is provided at one end of the dust cover, two groove side walls of the first receiving groove adjacent to the mounting opening are respectively provided with shaft grooves, the shaft groove passes through a side close to the mounting opening, the rotating shaft is installed in the shaft groove, and the buckle cover limits the rotating shaft in the shaft groove;

[0015] One end of the reset member is mounted on the housing, and the other end of the reset member abuts against the dust cover, so that the dust cover has a tendency to close.

[0016] In some embodiments of the utility model, the dust cover is provided with an inner recess, and a storage groove is provided on a side of the buckle cover facing the first receiving groove, and when the dust cover is in an open state, the inner recess is received in the storage groove.

[0017] In some embodiments of the utility model, at least one partition is provided in the shell, and at least one partition divides the space in the shell into at least two first accommodating grooves, at least two first accommodating grooves are arranged side by side, and the installation ports of at least two first accommodating grooves are connected, and one buckle cover covers each of the installation ports.

[0018] The utility model also provides an optical transmission device, the optical transmission device includes the above-mentioned LC adapter, and the LC adapter includes:

[0019] A housing, wherein a first receiving groove is formed at one end of the housing, a mounting opening is formed on a side wall of the first receiving groove, an assembly opening is formed on a side wall of the mounting opening close to the first receiving groove, and assembly grooves are formed on two opposite outer side walls of the housing adjacent to the mounting opening; and

[0020] A buckle cover, one end of which is provided with a latch tongue, the latch tongue being inserted into the assembly opening, the buckle cover being bent at opposite ends adjacent to the latch tongue to form a guard plate, the guard plate being assembled in the corresponding assembly groove.

[0021] The utility model adopts the above scheme, during the process of assembling the LC adapter, when the buckle cover is installed to the shell, the latch tongue at one end of the buckle cover is first inserted into the assembly opening, and then the buckle cover is closed, wherein the connection between the latch tongue and the assembly opening not only improves the connection stability between the buckle cover and the shell, but also the latch tongue can play a positioning role, assisting the assembler to coordinate the two guard plates to achieve simultaneous assembly, the difficulty of assembly and disassembly is small, and the installation can be achieved in one step, and the damage rate of parts caused by assembly is low, which can save production material costs and assembly time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 This is a schematic structural diagram of an embodiment of the LC adapter of the utility model;

[0024] Figure 2 for Figure 1 A partial enlarged view of point E in the middle;

[0025] Figure 3 A cross-sectional view of an embodiment of an LC adapter of the utility model;

[0026] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0027] Figure 5 for Figure 3 A partial enlarged view of point D in the middle;

[0028] Figure 6 This is an exploded view of an embodiment of the LC adapter of the utility model;

[0029] Figure 7 for Figure 6 A partial enlarged view of point B in the middle;

[0030] Figure 8 This is a structural schematic diagram of another perspective of an embodiment of the LC adapter of the utility model;

[0031] Fig. 9 for Figure 8A partial enlarged view of point C in the middle;

[0032] Fig.10 It is a structural schematic diagram of an embodiment of a reset plate in the utility model;

[0033] Fig.11 This is a structural schematic diagram of another perspective of an embodiment of the LC adapter of the utility model;

[0034] Fig.12 Fig.11 A partial enlarged view of point F in the middle.

[0035] Description of Figure Numbers:

[0036]

[0037]

[0038] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0042] The utility model provides an LC adapter 100, comprising a shell 11 and a buckle cover 12. A first accommodating groove 101 is provided at one end of the shell 11, a mounting opening 111 is provided on a side wall of the first accommodating groove 101, an assembly opening 113 is formed on a side wall of the mounting opening 111 close to the groove of the first accommodating groove 101, and two opposite outer side walls of the shell 11 adjacent to the mounting opening 111 are both provided with assembly grooves 119; a latch tongue 121 is provided at one end of the buckle cover 12, the latch tongue 121 is plugged into the assembly opening 113, and opposite ends of the buckle cover 12 adjacent to the latch tongue 121 are bent to form a guard plate 123, and the guard plate 123 is assembled in the corresponding assembly groove 119.

[0043] The shell 11 and the buckle cover 12 are generally made of plastic material, specifically polyethylene (PE), polypropylene (PP), polycarbonate (PC), etc., with good mechanical properties, heat resistance and corrosion resistance. The optical fiber channel 104 is generally made of ceramic tubes, glass tubes, etc. In some embodiments of the utility model, the shell 11 is also provided with a second receiving groove 103 on the side opposite to the first receiving groove 101, and an optical fiber channel 104 connected to the bottom of the first receiving groove 101 is formed, and the two ends of the optical fiber channel 104 are respectively connected to the bottom of the first receiving groove 101 and the bottom of the second receiving groove 103, so that it can be used to connect two optical fiber ends.

[0044] In the above-mentioned housing 11, the first accommodating grooves 101, the second accommodating grooves 103 and the optical fiber channels 104 can be arranged in one group, two groups, three groups or more, according to the specific situation, and no specific limitation is made here.

[0045] The first receiving groove 101 is used to receive the optical fiber end and install other components such as the dust cover 20 and the reset member. The optical fiber end extends into the notch of the first receiving groove 101. The components in the first receiving groove 101 are generally installed therein through the installation port 111.

[0046] The specific shape of the above-mentioned tongue 121 can be square, triangle, semicircle or other shapes. The thickness of the tongue 121 can be equivalent to the thickness of the buckle cover 12, or can be less than the thickness of the buckle cover 12. In some embodiments of the present invention, the thickness of the tongue 121 is less than the thickness of the buckle cover 12, and the tongue 121 is located on the side of the end face of the buckle cover 12 close to the inner side surface, so that the outer side surface of the buckle cover 12 can be flush with the outer surface of the shell 11.

[0047] According to the above scheme, during the process of assembling the LC adapter 100, when the buckle cover 12 is installed to the shell 11, the latch tongue 121 at one end of the buckle cover 12 is first inserted into the assembly opening 113, and then the buckle cover 12 is closed, wherein the connection between the latch tongue 121 and the assembly opening 113 not only improves the connection stability between the buckle cover 12 and the shell 11, but also the latch tongue 121 can play a positioning role, assisting the assembler to coordinate the two guard plates 123 to achieve simultaneous assembly, the difficulty of assembly and disassembly is small, and the installation can be achieved in one step, and the damage rate of parts caused by assembly is low, which can save production material costs and assembly time costs.

[0048] In some embodiments of the utility model, a buckle interface 118 is provided on a wall surface of one side of the installation opening 111 opposite to the assembly opening 113; an elastic buckle 122 is provided on a side of the buckle cover 12 opposite to the latch tongue 121, and the elastic buckle 122 is engaged with the buckle interface 118. In this way, when the buckle cover 12 is installed on the housing 11, the latch tongue 121 at one end of the buckle cover 12 is first inserted into the assembly opening 113, and then the other end of the buckle cover 12 is closed to engage the elastic buckle 122 with the buckle interface 118. The buckle cover 12 is provided with structures that cooperate with the housing 11 in four directions, and the connection between the two is more stable.

[0049] Considering that a single latch tongue 121 and elastic buckle 122 may easily cause the problem of tilting of one side or one corner of the buckle cover 12, in some embodiments of the present invention, a plurality of latch tongues 121 are provided, and the plurality of latch tongues 121 are arranged at intervals. In other embodiments of the present invention, a plurality of elastic buckles 122 are provided, and the plurality of elastic buckles 122 are arranged at intervals. The number of the latch tongues 121 and the elastic buckles 122 is specifically two, three, four or more, so that the problem of tilting of the buckle cover 12 can be avoided.

[0050] In some embodiments of the utility model, a guide protrusion 1211 is provided on one side of the latch 121 facing the first receiving groove 101, and guide slopes 1212 are provided on both sides of the guide protrusion 1211 in the direction of approaching and away from the optical fiber channel 104. Such a configuration facilitates the guide installation of the latch 121 into the assembly opening 113, and at the same time, when the latch 121 is withdrawn from the assembly opening 113 during the process of disassembling the buckle cover 12, the guide protrusion 1211 can be prevented from hanging on other parts in the first receiving groove 101 to damage the parts and inconvenience the disassembly.

[0051] Considering that after the latch tongue 121 at one end of the snap cover 12 is inserted into the assembly port 113, in the process of pressing the other end of the snap cover 12 into the installation port 111, it is necessary to limit the snap cover 12 to prevent the snap cover 12 from being excessively pressed into the first accommodating groove 101, thereby damaging the components in the first accommodating groove 101 and making it inconvenient to remove the snap cover 12. Therefore, in some embodiments of the utility model, a snap-on protrusion 1181 is further provided on the wall surface of the installation port 111, and the snap-on protrusion 1181 is located on the side of the snap interface 118 away from the first accommodating groove 101, and the elastic snap 122 includes a hook portion 1221 and a groove portion 1222, the hook portion 1221 is snapped into the snap interface 118, and the groove portion 1222 cooperates with the snap-on protrusion 1181. With such arrangement, when the buckle cover 12 is pressed until the hook 1221 is engaged with the buckle interface 118, the buckle protrusion 1181 fits into the groove 1222, restricting the buckle cover 12 from further moving in the direction approaching the first accommodating groove 101, thereby avoiding the problem of internal parts being damaged by pressure.

[0052] Furthermore, in some embodiments of the present invention, a locking protrusion 124 is convexly provided on the inner side of the guard plate 123, and a locking hole 1191 is provided on the groove wall of the assembly groove 119, and the locking protrusion 124 is engaged in the locking hole 1191. This further improves the connection stability between the buckle cover 12 and the housing 11, and when installing the buckle cover 12, the locking tongue 121 is first inserted into the assembly opening 113, and the assembly opening 113 can play a certain role in limiting the movement and flipping of the buckle cover 12. At this time, the assembly opening 113 and the hand of the assembler jointly form a stable support for the buckle cover 12, so that the guard plate 123 can be smoothly engaged in the assembly groove 119.

[0053] In some embodiments of the present invention, a limiting protrusion 125 is further provided at one end of the buckle cover 12 close to the assembly opening 113, and a limiting groove 1121 is correspondingly provided on a side wall of the installation opening 111 away from the bottom of the first receiving groove 101, the limiting groove 1121 penetrates in a direction away from the first receiving groove 101, and the limiting protrusion 125 is assembled in the limiting groove 1121. In this way, the limiting groove 1121 can further limit the buckle cover 12, thereby improving the structural stability.

[0054] In some embodiments of the present invention, the LC adapter 100 further includes a dust cover 20 and a reset member, a rotating shaft 21 is provided at one end of the dust cover 20, and the two groove side walls of the first accommodating groove 101 adjacent to the mounting port 111 are respectively provided with shaft grooves 105, the shaft groove 105 passes through the side close to the mounting port 111, the rotating shaft 21 is installed in the shaft groove 105, and the buckle cover 12 limits the rotating shaft 21 in the shaft groove 105; one end of the reset member is installed on the housing 11, and the other end of the reset member abuts against the dust cover 20, so that the dust cover 20 has a tendency to cover.

[0055] Through the above scheme, when assembling, the rotating shaft 21 of the dust cover 20 can be first assembled into the shaft groove 105, and then the reset part can be installed, and finally the buckle cover 12 can be installed. The dust cover 20 is easy to install. The buckle cover 12 is not only used to seal the mounting opening 111, but also used to limit the dust cover 20, eliminating the redundant dust cover 20 limiting structure, thus killing two birds with one stone.

[0056] The above-mentioned rotating shaft 21 is generally formed integrally with the dust cover 20, which is convenient for installation and compact in structure. The above-mentioned reset member can be a spring, a torsion spring, etc., which is not limited here. In some embodiments of the utility model, the reset member is a reset plate 30, which has a fixed end 31 and a top end 32 opposite to each other. The top end 32 abuts against an end of the inner side of the dust cover 20 away from the rotating shaft 21, so that the dust cover 20 has a tendency to cover. The end of the top end 32 is bent in a direction away from the dust cover 20. A slot 106 is formed between the end surface of one side through which the shaft groove 105 passes and the buckle cover 12, and the fixed end 31 is installed in the slot 106. In this way, during assembly, after the rotating shaft 21 is assembled into the shaft groove 105, the fixed end 31 of the reset sheet 30 is placed on the side through which the shaft groove 105 passes, and finally the buckle cover 12 is installed, and the reset sheet 30 is clamped between the groove wall of the first accommodating groove 101 and the buckle cover 12, and the buckle cover 12 limits the rotating shaft 21 in the shaft groove 105 through the reset sheet 30. In addition, the sliding resistance of the curved abutting top 32 on the inner side of the dust cover 20 is small, and the user can insert the optical fiber end smoothly.

[0057] The reset sheet 30 can be fixed by pressing and clamping the buckle cover 12 and the wall of the first receiving groove 101, limiting the movement of the fixed end 31 in the direction of approaching and moving away from the optical fiber channel 104. In some embodiments of the utility model, the reset sheet 30 is provided with lugs 34 on opposite sides of the fixed end 31, and the groove walls of the first receiving groove 101 adjacent to the installation opening 111 are respectively provided with limit baffles 114, and the limit baffles 114 limit the lugs 34 in the clamping slot 106. Such a setting has a good limiting effect and high structural stability.

[0058] In some embodiments of the utility model, a first partition 116 is provided in the housing 11, and the first partition 116 divides the space in the housing 11 into pairs of first accommodating grooves 101, and multiple first accommodating grooves 101 are all connected to the installation port 111, and the limit baffle 114 is formed at one end of the first partition 116 close to the installation port 111; the reset pieces 30 are arranged in pairs, and the adjacent side lugs 34 of the two pairs of reset pieces 30 are integrally connected, and an assembly interval 35 for assembling the limit baffle 114 is formed between the two pairs of reset pieces 30. In this way, an LC adapter 100 can connect more than two optical fibers, and has better applicability. The reset pieces 30 are arranged in pairs, which can reduce the assembly steps, save the trouble of assembling the reset pieces 30 one by one, and have higher assembly efficiency.

[0059] Furthermore, in some embodiments of the present invention, the housing 11 further includes a second partition 117, which is disposed between two adjacent and unpaired first accommodating grooves 101, and an anti-fool baffle 115 is disposed at one end of the second partition 117 facing the mounting opening 111, and the width of the anti-fool baffle 115 is greater than the assembly interval 35. In this arrangement, the paired reset sheets 30 cannot be installed on both sides of the anti-fool baffle 115, thereby avoiding mis-installation.

[0060] In some embodiments of the present invention, a side of the buckle cover 12 facing the first receiving groove 101 is provided with an escape groove 126 to escape the bent portion of the reset sheet 30. With this arrangement, when the dust cover 20 is opened, the top portion is received in the escape groove 126, and the overall structure is further compacted, which is conducive to the compactness of the LC adapter 100.

[0061] The reset sheet 30 is generally made of a metal sheet, but may also be made of a plastic sheet, which is not specifically limited here.

[0062] Furthermore, in some embodiments of the present invention, the dust cover 20 is provided with an inner recess 22, and a storage groove 127 is provided on one side of the buckle cover 12 facing the first storage groove 101. When the dust cover 20 is in the open state, the inner recess 22 is stored in the storage groove 127. In this way, the inner recess 22 is used to avoid the optical fiber. When the optical fiber end is inserted into the first storage groove 101, the outer wall of the optical fiber end abuts against the dust cover 20, and the optical fiber is spaced from the inner recess 22. When the optical fiber end is fully inserted, the inner recess 22 is stored in the storage groove 127. The overall structure is compact, which is conducive to the compact appearance of the LC adapter 100.

[0063] In some embodiments of the present invention, the reset member is a reset sheet 30, and the reset sheet 30 is provided with an avoidance opening 33 to avoid the inner recess 22. In this way, the inner recess 22 can pass through the avoidance opening 33 and be received in the receiving groove 127 without affecting the compactness of the structure.

[0064] Furthermore, in some embodiments of the present invention, at least one partition is provided in the housing 11, and the at least one partition divides the space in the housing 11 into at least two first receiving grooves 101, and the at least two first receiving grooves 101 are arranged side by side, and the installation openings 111 of the at least two first receiving grooves 101 are connected, and a buckle cover 12 covers each installation opening 111. With such a configuration, an LC adapter 100 can connect more than two optical fibers, and has better applicability.

[0065] In some embodiments of the utility model, a lap protrusion 107 is formed on one side of the two side walls of the first receiving groove 101 adjacent to the installation opening 111 and close to the groove opening, and a side of the lap protrusion 107 facing the groove bottom of the first receiving groove 101 is set as a lap bevel 108, and the lap bevel 108 abuts against the outer side surface of the dust cover 20, and the lap bevel 108 is inclined from the direction away from the buckle cover to the direction close to the groove bottom of the first receiving groove 101. In this way, the outer side surface of the dust cover 20 fits with the lap protrusion 107, and the peripheral side surface of the dust cover 20 fits with the groove wall of the first receiving groove 101, and the dustproof effect is better.

[0066] In some embodiments of the utility model, a protective platform 109 is convexly provided on one side of the groove wall of the first receiving groove 101 near the groove opening, and a dust-proof boss 23 is connected to one end of the dust cover 20 near the buckle cover, and the dust-proof boss 23 is located between the outer side of the dust cover 20 and the protective platform 109. In this way, the protective platform 109 can prevent the light end from hitting the rotating shaft 21 of the dust cover 20 when the light end is inserted, and prevent the rotating shaft 21 from breaking due to a large radial force, and the dust-proof boss 23 can fill the gap between the dust cover 20 and the protective platform 109, and prevent dust from accumulating between the dust cover 20 and the protective platform 109. In particular, in some embodiments, the dust cover 20 is arranged obliquely, and the gap between the dust cover 20 and the protective platform 109 is larger, so it is more necessary to provide the dust-proof boss 23.

[0067] The dustproof boss 23 and the dustproof cover 20 are generally connected in one piece. Of course, they can also be connected by bonding, hot melting or other methods, which are not limited here.

[0068] The present invention also provides an optical transmission device, which includes the above LC adapter 100. Since the optical transmission device adopts all the solutions in all the above embodiments, it has at least all the technical effects brought by the technical solutions in all the above embodiments, which will not be described one by one here.

[0069] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An LC adapter, characterized in that: include: A housing, wherein a first receiving groove is provided at one end of the housing, a mounting opening is provided on a side wall of the first receiving groove, an assembly opening is formed on a side wall of the mounting opening close to the first receiving groove, and assembly grooves are provided on two opposite outer side walls of the housing adjacent to the mounting opening; and A buckle cover, one end of which is provided with a latch tongue, the latch tongue being inserted into the assembly opening, the buckle cover being bent at opposite ends adjacent to the latch tongue to form a guard plate, the guard plate being assembled in the corresponding assembly groove.

2. The LC adapter according to claim 1, characterized in that: A guide protrusion is arranged on a side of the latch tongue facing the first receiving groove, and guide inclined surfaces are arranged on both sides of the guide protrusion in a direction close to and away from the bottom of the first receiving groove.

3. The LC adapter according to claim 1, wherein: A buckle interface is provided on a wall surface of one side of the installation opening opposite to the assembly opening; An elastic buckle is arranged on one side of the buckle cover opposite to the latch tongue, and the elastic buckle is latched in the buckle interface.

4. The LC adapter according to claim 3, characterized in that: The wall surface of the installation port is also provided with a snap-on protrusion, which is located on the side of the snap interface away from the first accommodating groove. The elastic buckle includes a hook portion and a groove portion, the hook portion is snapped into the snap interface, and the groove portion cooperates with the snap-on protrusion.

5. The LC adapter according to claim 1, wherein: The housing is provided with a plurality of spaced apart assembly openings, and a plurality of latching tongues are provided, wherein the plurality of latching tongues are spaced apart and matched with the corresponding assembly openings.

6. The LC adapter according to claim 1, wherein: The inner side surface of the guard plate is provided with a clamping protrusion, and the groove wall of the assembly groove is provided with a clamping hole, and the clamping protrusion is clamped in the clamping hole.

7. The LC adapter according to any one of claims 1 to 6, characterized in that: The LC adapter further includes a dust cover and a reset member, one end of the dust cover is provided with a rotating shaft, two groove side walls of the first receiving groove adjacent to the installation opening are respectively provided with shaft grooves, the shaft grooves pass through a side close to the installation opening, the rotating shaft is installed in the shaft grooves, and the buckle cover limits the rotating shaft in the shaft grooves; One end of the reset member is mounted on the housing, and the other end of the reset member abuts against the dust cover, so that the dust cover has a tendency to close.

8. The LC adapter according to claim 7, characterized in that: The dust cover is provided with an inner concave portion, and a side of the buckle cover facing the first receiving groove is provided with a receiving groove, and when the dust cover is in an open state, the inner concave portion is received in the receiving groove.

9. The LC adapter according to any one of claims 1 to 6, characterized in that: At least one partition is arranged in the shell, and at least one partition divides the space in the shell into at least two first accommodating grooves. At least two first accommodating grooves are arranged side by side, and the installation openings of at least two first accommodating grooves are connected. A buckle cover covers each of the installation openings.

10. An optical transmission device, characterized in that: The optical transmission device comprises the LC adapter according to any one of claims 1 to 9.

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