A high-sealing optical cable joint box

Abstract

The present invention relates to the technical field of optical cable splicing equipment, and in particular to a high-seal optical cable junction box, comprising an upper shell, a lower shell and a sealing structure arranged between the upper shell and the lower shell, the sealing structure comprising a first sealing member and a second sealing member arranged in combination, the cross section of the first sealing member being an elliptical ring structure with an opening on one side, and a buffer space being arranged inside, the opening and the buffer space dividing the first sealing member into two suspended edges for generating elastic deformation when pressure is applied; the cross section of the second sealing member comprising a pressing section and an inserting section arranged in a T-shaped structure, the inserting section being arranged in the opening and being movable along the opening, the reaction force generated by the deformation of the two suspended edges causing the two sides of the pressing section to tend to deform upward, the extrusion plane causing the two sides of the pressing section to be close to the extrusion plane, thereby forming two sealing lines between the pressing section and the extrusion plane, forming an adaptive multiple seal, and effectively enhancing the reliability and stability of the sealing structure.

Description

Technical Field

[0001] The invention relates to the technical field of optical cable splicing equipment, and in particular to a highly sealed optical cable junction box. Background Art

[0002] The optical cable splice box is a device used to protect the optical cable splices. It is widely used in the optical cable connections and branches in the optical fiber communication network. Its core function is to provide good sealing to prevent moisture, dust and other external impurities from entering the optical cable splice area, ensuring that the optical cable splices remain dry and clean, so as to ensure the transmission stability and security of the optical signal.

[0003] like Figure 1 As shown, the existing optical cable junction box mainly includes two upper shells and lower shells that are buckled together. The ends of the upper shell and the lower shell after buckling form an entrance for the optical cable. The entrance is sealed by a special sleeve sealing structure (not shown in the figure). The end face of the lower shell has a circle of sealing grooves, and an O-ring is arranged in the sealing groove. The end face of the upper shell is a plane. When the upper shell and the lower shell are buckled and locked, the O-ring is squeezed and deformed, thereby achieving sealing on the end faces of the upper shell and the lower shell. In actual applications, there are mainly two ways to buckle the upper shell and the lower shell. One way is that a hinge is arranged on one side of the upper shell and the lower shell, and the buckling is completed by rotating installation; the other way is to align the upper shell and the lower shell directly up and down, and complete the buckling by vertical installation.

[0004] However, the above two installation methods have the following problems in actual use: in the rotational installation method, the O-ring is first stressed on the side close to the hinge, resulting in uneven pressure distribution; in the vertical installation method, the O-ring may be partially lifted up in the sealing groove, resulting in excessive local force, which also causes uneven force; in short, no matter which fastening method is used, long-term use may cause uneven force on the O-ring, causing wear and fatigue, resulting in reduced sealing performance, and eventually causing leakage, thereby affecting the protection effect of the optical cable connector, and then affecting the transmission stability of the optical signal and the service life of the equipment.

[0005] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0006] The present invention provides a highly sealed optical cable joint box, thereby effectively solving the problems pointed out in the background technology.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A high-seal optical cable joint box, comprising:

[0009] An upper shell, a lower shell, and a sealing structure provided between the upper shell and the lower shell;

[0010] The buckling end surfaces of the upper shell and the lower shell are provided with a strip-shaped sealing groove on one side and an extrusion plane on the other side. The cross section of the sealing groove is a rectangular structure. The sealing structure is arranged in the sealing groove. The extrusion plane is used to apply pressure to the sealing structure when buckling;

[0011] The sealing structure includes a first sealing member and a second sealing member which are arranged in combination. The cross section of the first sealing member is an elliptical ring structure with an opening on one side. A buffer space is provided inside the elliptical ring structure. The opening and the buffer space divide the first sealing member into two suspended edges for generating elastic deformation when pressure is applied. The cross section of the second sealing member includes a pressing section and an inserting section which are arranged in a T-shaped structure. The inserting section is arranged in the opening and can move along the opening. In an unstressed state, a gap is provided between the end of the inserting section and the bottom of the buffer space.

[0012] Furthermore, the plug-in section and two side walls of the opening are both vertically arranged.

[0013] Furthermore, both side walls of the plug-in section and the opening are arranged with inclined surfaces to form a guiding structure, and the two inclined surfaces make the plug-in section diverge away from one end of the pressing section.

[0014] Furthermore, the two inclined surfaces are symmetrically arranged.

[0015] Furthermore, the angle of the inclined surface is 10° to 45°.

[0016] Furthermore, rounded corners are provided between the side wall and the bottom wall of the plug-in section and the side wall and the top wall of the pressing section.

[0017] Furthermore, the bottom wall of the plug-in section is an arc-shaped structure with a middle portion protruding outward.

[0018] Furthermore, a bottom wall of the first sealing member is provided with a flat surface.

[0019] Furthermore, the buffer space is eccentrically arranged toward one side of the opening.

[0020] Furthermore, the thickness of the pressing section is smaller than the thickness of the plug-in section.

[0021] The technical solution of the present invention can achieve the following technical effects:

[0022] The buffer space of the first seal allows the sealing structure to achieve adaptive deformation during the locking process, avoiding hard friction between the sealing structure and the extrusion plane, reducing wear and fatigue of the sealing structure, effectively improving the durability and service life of the sealing structure, and increasing the reliability and stability of the sealing structure.

[0023] The reaction force generated by the deformation of the two suspended edges causes the two sides of the pressing section to tend to deform upward. This deformation makes the force at both ends of the pressing section greater than the force in the middle part, thereby improving the fit between the two sides of the pressing section and the extrusion plane of the upper shell, and enhancing the contact tightness.

[0024] In the final stage of buckling and locking, the extrusion plane of the upper shell will continue to press the pressing section downward, so that the two sides of the pressing section are close to the extrusion plane, thereby forming two sealing lines between the pressing section and the extrusion plane, forming an adaptive multiple sealing structure, thereby effectively enhancing the reliability and stability of the sealing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention 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 recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of an optical cable joint box in the background technology;

[0027] Figure 2 is a cross-sectional schematic diagram of a first sealing member;

[0028] Figure 3 is a cross-sectional schematic diagram of a second sealing member;

[0029] Figure 4 A structural schematic diagram of a specific implementation of the sealing structure (unstressed state);

[0030] Figure 5 A structural schematic diagram of a specific implementation of the sealing structure (the reaction force of the two edges causes the two sides of the pressing section to deform upward);

[0031] Figure 6 A structural schematic diagram of another specific implementation of the sealing structure;

[0032] Figure 7 A structural schematic diagram of another specific implementation of the sealing structure (the reaction force of the two edges causes the two sides of the pressing section to deform upward);

[0033] Figure 8 The bottom wall of the plug-in section is a schematic diagram of an arc-shaped structure that protrudes outward in the middle.

[0034] Reference numerals: 1, upper shell; 2, lower shell; 21, sealing groove; 3, sealing structure; 31, first sealing member; 311, buffer space; 312, opening; 313, edge; 314, plane; 32, second sealing member; 321, pressing section; 322, plug-in section; 322a, inclined surface; 322b, arc-shaped structure; 322c, rounded corner;

[0035] 01. O-ring. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] like Figures 2 to 8 As shown: A high-seal optical cable joint box, comprising: an upper shell 1, a lower shell 2 and a sealing structure 3 arranged between the upper shell 1 and the lower shell 2;

[0039] On the buckling end surfaces of the upper shell 1 and the lower shell 2, a strip-shaped sealing groove 21 is provided on one side, and an extrusion plane is provided on the other side. The cross section of the sealing groove 21 is a rectangular structure. The sealing structure 3 is provided in the sealing groove 21. The extrusion plane is used to apply pressure to the sealing structure 3 when buckling;

[0040] The sealing structure 3 includes a first sealing member 31 and a second sealing member 32 which are arranged in combination. The cross section of the first sealing member 31 is an elliptical ring structure with an opening 312 on one side. A buffer space 311 is arranged inside the elliptical ring structure. The opening 312 and the buffer space 311 divide the first sealing member 31 into two suspended edges 313 for generating elastic deformation when pressure is applied. The cross section of the second sealing member 32 includes a pressing section 321 and an inserting section 322 which are arranged in a T-shaped structure. The inserting section 322 is arranged in the opening 312 and can move along the opening 312. In an unstressed state, a gap is arranged between the end of the inserting section 322 and the bottom of the buffer space 311.

[0041] Specifically, the sealing principle of the sealing structure 3 is as follows:

[0042] like Figure 4 As shown, during the buckling and locking process of the upper shell 1 and the lower shell 2, the extrusion plane of the upper shell 1 applies downward pressure to the second sealing member 32, causing the plug-in section 322 of the second sealing member 32 to move downward along the opening 312 of the first sealing member 31. At the same time, Figure 5 As shown, the pressing section 321 of the second sealing member 32 presses the two suspended edges 313 of the first sealing member 31 downward, causing the two edges 313 to produce elastic deformation;

[0043] As the two suspended edges 313 are deformed, the two edges 313 form a reaction force on the pressing section 321 of the second sealing member 32, causing the two sides of the pressing section 321 to tend to deform upward. This deformation causes the force at both ends of the pressing section 321 to be greater than the force in the middle part, thereby improving the fit between the two sides of the pressing section 321 and the extrusion plane of the upper shell 1 and enhancing the contact tightness. In the final stage of buckling and locking, the extrusion plane of the upper shell 1 will continue to press the pressing section 321 downward, causing the two sides of the pressing section 321 to be close to the extrusion plane, thereby forming two sealing lines between the pressing section 321 and the extrusion plane, forming an adaptive multiple sealing structure 3, thereby effectively enhancing the reliability and stability of the sealing structure 3.

[0044] The buffer space 311 of the first seal 31 allows the sealing structure 3 to achieve adaptive deformation during the locking process, avoiding hard friction between the sealing structure 3 and the extrusion plane, reducing the wear and fatigue of the sealing structure 3, effectively improving the durability and service life of the sealing structure 3, and increasing the reliability and stability of the sealing structure 3.

[0045] In addition, during the buckling and locking process, the two suspended edges 313 of the first seal 31 exert a reaction force on the pressing section 321 of the second seal 32 through elastic deformation, causing the two sides of the pressing section 321 to deform upward. This deformation causes the force at both ends of the pressing section 321 to be greater than the force in the middle part. The reaction force improves the fit between the pressing section 321 and the extrusion plane, thereby further enhancing the reliability and stability of the sealing effect.

[0046] A gap is provided between the end of the plug-in section 322 of the second seal 32 and the bottom of the buffer space 311, and the second seal 32 can move along the opening 312 in the opening 312 of the first seal 31, which helps to evenly distribute the pressure during the buckling and locking process, avoids uneven deformation of the seal due to local stress concentration, effectively prevents leakage, and ensures the long-term stability and reliability of the sealing structure 3.

[0047] refer to Figures 2 to 5As shown, as a specific implementation of the sealing structure 3, the plug-in section 322 and the two side walls of the opening 312 are both vertically arranged. Specifically, on the one hand, the side walls of the plug-in section 322 and the opening 312 are both vertical surfaces, so that the structural design of the first seal 31 and the second seal 32 is simplified; on the other hand, when the plug-in section 322 of the second seal 32 is installed into the opening 312 of the first seal 31, the plug-in section 322 can be installed from the side of the opening 312, and can also be installed from the top of the opening 312. For the slender sealing structure 3, this design makes it more convenient and quick to install from the top, thereby improving the installation efficiency.

[0048] like Figures 6 to 7 As shown, another specific implementation of the sealing structure 3 is: both side walls of the plug-in section 322 and the opening 312 are provided with inclined surfaces 322a to form a guiding structure, and the two inclined surfaces 322a make the plug-in section 322 diverge away from one end of the pressing section 321. Specifically, the inclined surfaces 322a of the side walls where the plug-in section 322 contacts the opening 312 form a dovetail groove structure. On the one hand, it prevents the plug-in section 322 from falling off and ensures the stability of the sealing structure 3 after installation; on the other hand, during the extrusion deformation process, the inclined surfaces 322a provide a guiding effect, guiding the edges 313 on both sides to move toward the corner where the side wall and the bottom wall of the plug-in section 322 meet, thereby enhancing the sealing at the corner and improving the overall sealing performance.

[0049] As a preferred embodiment of the above embodiment, the two inclined surfaces 322a are symmetrically arranged. The symmetrical inclined surfaces 322a provide a good guiding effect, ensuring that the force on both side walls of the plug-in section 322 is uniform during movement, avoiding tilting or jamming due to uneven force on one side, thereby improving the stability of the overall structure.

[0050] Among them, the angle of the bevel 322a is 10° to 45°. Specifically, the angle of the single-sided bevel 322a is within this range. The bevel 322a can effectively disperse the stress during fastening, avoid fatigue or damage of the seal caused by stress concentration, and thus extend the service life of the seal.

[0051] In this embodiment, reference Figure 6 , Figure 7 Rounded corners 322c are provided between the side walls and bottom walls of the plug-in section 322 and the side walls and top walls of the pressing section 321. Specifically, the rounded corners 322c prevent the second sealing member 32 from having sharp corners. The rounded corner 322c design effectively eliminates the stress concentration problem caused by the sharp corners, reduces the risk of cracks, deformation or damage to the sealing member during use, and extends the service life of the component.

[0052] As a preferred embodiment of the above, Figure 8As shown, the bottom wall of the plug-in section 322 is a circular arc-shaped structure 322b protruding outward in the middle. Specifically, since the first seal 31 and the second seal 32 are softer strip structures, when the two softer strip structures are actually assembled, such as when the second seal 32 is installed from one end of the first seal 31 to the other end, the end of the plug-in section 322 will contact and rub against the bottom of the buffer space 311. By designing the end of the plug-in section 322 to be a circular arc-shaped structure 322b protruding outward, the original surface contact can be converted into line contact, thereby reducing the contact area, reducing the friction resistance, and making the installation and alignment of the second seal 32 smoother.

[0053] In this embodiment, reference Figure 2 The bottom wall of the first sealing member 31 is provided with a plane 314. Specifically, the plane 314 of the bottom wall is designed to provide a stable supporting surface to prevent the sealing structure 3 from tilting or shifting when placed in the sealing groove 21, thereby ensuring a smooth installation process and a stable structure; the plane 314 is designed to facilitate rapid alignment of the sealing structure 3, so that the pressing section 321 of the second sealing member 32 can be aligned with the extrusion plane of the upper shell 1, thereby avoiding sealing failure caused by position offset.

[0054] Among them, the buffer space 311 is eccentrically arranged to one side of the opening 312, so that the thickness of the two edge portions 313 is smaller than the thickness of other positions of the elliptical ring structure. Under the action of pressure, the edge portions 313 can deform more flexibly, and are more easily deformed and exert a reaction force when pressure is applied, so that the two sides of the pressing section 321 are pushed upward more efficiently, thereby enhancing the fit between the pressing section 321 and the extrusion plane and improving the sealing performance.

[0055] As a preferred embodiment of the above embodiment, the thickness of the pressing section 321 is smaller than the thickness of the plug-in section 322. Specifically, the reaction force generated by the two edge portions 313 can be more evenly transmitted to the two sides of the pressing section 321, so that the two sides of the pressing section 321 tend to be lifted up, thereby enhancing the elastic deformation capacity of the pressing section 321, thereby improving the tightness of the seal and enhancing the overall sealing performance.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A highly sealed optical cable splice box, characterized in that: include: An upper shell, a lower shell, and a sealing structure provided between the upper shell and the lower shell; The buckling end surfaces of the upper shell and the lower shell are provided with a strip-shaped sealing groove on one side and an extrusion plane on the other side. The cross section of the sealing groove is a rectangular structure. The sealing structure is arranged in the sealing groove. The extrusion plane is used to apply pressure to the sealing structure when buckling; The sealing structure comprises a first sealing member and a second sealing member which are arranged in combination. The cross section of the first sealing member is an elliptical ring structure with an opening on one side. A buffer space is arranged inside the elliptical ring structure. The opening and the buffer space divide the first sealing member into two suspended edges, which are used to produce elastic deformation when pressure is applied. The cross section of the second sealing member comprises a pressing section and an inserting section which are arranged in a T-shaped structure. The inserting section is arranged in the opening and can move along the opening. In an unstressed state, a gap is arranged between the end of the inserting section and the bottom of the buffer space. The plug-in section and the two side walls of the opening are both inclined to form a guide structure, and the two inclined surfaces make the plug-in section diverge away from one end of the pressing section; In the final stage of buckling and locking, the extrusion plane of the upper shell continues to press the pressing section downward, so that the two sides of the pressing section are close to the extrusion plane, thereby forming two sealing lines between the pressing section and the extrusion plane, forming an adaptive multiple sealing structure.

2. The high-sealability optical cable splice box according to claim 1, characterized in that: The two inclined surfaces are symmetrically arranged.

3. The high-seal optical cable splice box according to claim 1, characterized in that: The angle of the inclined surface is 10° to 45°.

4. The high-seal optical cable splice box according to claim 1, characterized in that: Rounded corners are arranged between the side wall and the bottom wall of the plug-in section and between the side wall and the top wall of the pressing section.

5. The high-seal optical cable splice box according to claim 1, characterized in that: The bottom wall of the plug-in section is an arc-shaped structure with a protrusion in the middle.

6. The high-seal optical cable splice box according to claim 1, characterized in that: The bottom wall of the first sealing member is provided with a flat surface.

7. The high-seal optical cable splice box according to claim 1, characterized in that: The buffer space is eccentrically arranged toward one side of the opening.

8. The high-seal optical cable splice box according to claim 1, characterized in that: The thickness of the pressing section is smaller than the thickness of the plug-in section.

Images