Drawing type optical fiber terminal box

Abstract

The utility model discloses a pull-out type optical fiber terminal box, and relates to the technical field of communication terminal boxes. The inner shell is mounted in the outer shell in a sliding manner; the number of the guide rail assemblies is two, and the guide rail assemblies are installed on the two sides of the inner shell correspondingly. The limiting device is mounted on the guide rail assembly and is used for limiting the pushed-in inner shell; the extrusion device is detachably mounted at the opening in the rear side of the outer shell and is in contact with the inner shell; the cable is mounted on the inner shell and penetrates through the extrusion device; according to the utility model, the arrangement of the special-shaped elastic sleeve drives the cable to be folded, and the special-shaped elastic sleeve is pulled to deform and stretch when the inner shell moves, so that the pulling force cannot act on the cable, the special-shaped elastic sleeve controls the extension of the cable, and the phenomenon that the optical cable is loosened or broken under the action of external force in the pulling process of the inner shell is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of communication terminal boxes, in particular to a pull-out type optical fiber terminal box. Background Art

[0002] Since fiber-optic communication has the advantages of large capacity, long distance and anti-electromagnetic interference, it is more in line with the future human demand for large amounts of information and high precision. In addition, the low price makes the transmission medium of optical fiber widely promoted. At present, the fiber-optic network has gradually entered the home. The installation of fiber-to-the-home usually includes the installation of the optical fiber terminal and the installation of the optical network terminal. The optical fiber terminal box and the optical network terminal are application products for users in the optical network. The optical fiber terminal box and the optical network terminal are connected through the optical cable led out of the optical fiber terminal box.

[0003] The pull-out fiber optic terminal box is usually installed on a cabinet, so that the optical cables and optical fibers extending from the fiber optic terminal box will be arranged and fixed on the cable management rack of the cabinet. If the optical cables and optical fibers inside the fiber optic terminal box need to be spliced ​​or repaired, the inner box of the fiber optic terminal box needs to be pulled out, which will cause the optical cables on the cabinet cable management rack to be pulled together, and the optical cables may even be disconnected from the fiber optic terminal box, affecting the cable management effect. Utility Model Content

[0004] The utility model provides a pull-out type optical fiber terminal box to solve the problem in the prior art that if the optical cables and optical fibers inside the optical fiber terminal box need to be welded or repaired, the inner box of the optical fiber terminal box needs to be pulled out, which will cause the optical cables on the cabinet cable management rack to be pulled together, and may even cause the optical cables to be disconnected from the optical fiber terminal box, thereby affecting the cable management effect.

[0005] The technical problem solved by the utility model is achieved by the following technical solutions:

[0006] A pull-out optical fiber terminal box, comprising:

[0007] outer shell;

[0008] An inner shell body, the inner shell body being slidably mounted inside the outer shell body;

[0009] A guide rail assembly, wherein two guide rail assemblies are provided and are respectively installed on both sides of the inner shell;

[0010] A limiting device, which is installed on the guide rail assembly and limits the pushed-in inner shell;

[0011] An extrusion device, which is detachably mounted at the rear opening of the outer shell and contacts the inner shell;

[0012] a cable, the cable being mounted on the inner housing and passing through the extrusion device;

[0013] A special-shaped elastic sleeve, which is sleeved on the outside of the cable and drives the cable to be spirally stored;

[0014] The clamping device is provided with two clamping devices, and is respectively installed at two ends of the special-shaped elastic sleeve.

[0015] Optionally, the guide rail assembly includes:

[0016] A guide rail, wherein the guide rail is fixed on the inner side wall of the outer shell;

[0017] A sliding block, which is fixed to the side of the inner shell and slides along the guide rail;

[0018] The balls are provided in two groups and are rotatably mounted on the top and bottom of the sliding block to contact the guide rail.

[0019] Optionally, the limiting device includes:

[0020] A storage slot, wherein the storage slot is provided on the guide rail;

[0021] A receiving column, which is fixed on the inner side wall of the outer shell and located at the center of the receiving slot;

[0022] A limiting plate, the limiting plate is rotatably sleeved on the outer side of the receiving column;

[0023] A positioning device is installed on the sliding block.

[0024] Optionally, the positioning device includes:

[0025] An installation groove is provided on the top of the sliding block, and an inner wall of the installation groove contacts the limit plate;

[0026] a first spring, wherein the first spring is fixed on the inner bottom wall of the mounting groove;

[0027] A supporting plate is fixed on the top of the first spring and contacts the limiting plate.

[0028] Optionally, the extrusion device comprises:

[0029] A rear cover, the rear cover being detachably fixed to the rear opening of the outer shell;

[0030] a second spring, the second spring being fixed to the inner side wall of the rear side cover;

[0031] A push plate is fixed on the second spring and contacts the inner housing.

[0032] Optionally, the clamping device comprises:

[0033] Positioning sleeves, two of which are fixed on the inner shell and the rear cover respectively;

[0034] The plug connector is fixed at the end of the special-shaped elastic sleeve and plugged into the interior of the positioning sleeve.

[0035] Optionally, also include:

[0036] Two L-shaped mounting plates are provided and are respectively fixed on two sides of the outer shell.

[0037] The beneficial effects of the utility model are:

[0038] The cable is retracted by the setting of the special-shaped elastic sleeve, and the special-shaped elastic sleeve is pulled to deform and stretch when the inner shell moves, so that the pulling force will not be applied to the cable, so that the special-shaped elastic sleeve controls the extension of the cable, and prevents the optical cable from loosening or breaking under the action of external force during the pulling process of the inner shell;

[0039] The two ends of the special-shaped elastic sleeve are fixed by setting the clamping device to prevent the special-shaped elastic sleeve from moving as a whole under the action of external force, causing pulling on the cable, thereby increasing the safety of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the implementation scheme of the utility model or the technical scheme in the prior art, the drawings required for use in the implementation scheme or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation schemes of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0041] Figure 1 This is a schematic diagram of the internal structure of the utility model;

[0042] Figure 2 For this utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0043] Figure 3 This is a schematic diagram of the guide rail structure of the utility model;

[0044] Figure 4 This is a schematic diagram of the structure of the extrusion device of the utility model;

[0045] Figure 5 This is a schematic diagram of the structure of the sliding block of the utility model;

[0046] Figure 6 For this utility model Figure 5 A magnified schematic diagram of the structure at B in the middle;

[0047] Figure 7 It is a schematic diagram of the structure of the special-shaped elastic sleeve of the utility model.

[0048] In the figure: 100, outer shell;

[0049] 200, inner shell;

[0050] 300, guide rail assembly; 310, guide rail; 320, sliding block; 330, ball bearing;

[0051] 400, limiting device; 410, receiving groove; 420, receiving column; 430, limiting plate; 440, positioning device; 441, mounting groove; 442, first spring; 443, supporting plate;

[0052] 500, extrusion device; 510, rear side cover; 520, second spring; 530, push plate;

[0053] 600, Cable;

[0054] 700, special-shaped elastic sleeve;

[0055] 800, clamping device; 810, positioning sleeve; 820, plug connector;

[0056] 900, L-shaped mounting plate. DETAILED DESCRIPTION

[0057] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0058] Reference Figure 1-7 A pull-out optical fiber terminal box is shown, comprising:

[0059] Outer shell 100;

[0060] An inner housing 200, wherein the inner housing 200 is slidably mounted inside the outer housing 100;

[0061] A guide rail assembly 300, wherein two guide rail assemblies 300 are provided and are respectively installed on both sides of the inner housing 200;

[0062] A limiting device 400, wherein the limiting device 400 is installed on the guide rail assembly 300 and limits the pushed-in inner housing 200;

[0063] An extrusion device 500, which is detachably mounted at the rear opening of the outer shell 100 and contacts the inner shell 200;

[0064] A cable 600, wherein the cable 600 is mounted on the inner housing 200 and passes through the extrusion device 500;

[0065] A special-shaped elastic sleeve 700, which is sleeved on the outside of the cable 600 and drives the cable 600 to be spirally stored;

[0066] The clamping device 800 is provided with two clamping devices 800 and is respectively installed at two ends of the special-shaped elastic sleeve 700.

[0067] The cable 600 is retracted by the arrangement of the special-shaped elastic sleeve 700, and the special-shaped elastic sleeve 700 is pulled to deform and stretch when the inner housing 200 moves, so that the pulling force will not be applied to the cable 600, so that the special-shaped elastic sleeve 700 controls the extension of the cable 600, thereby preventing the optical cable from loosening or breaking under the action of external force during the pulling process of the inner housing 200;

[0068] The two ends of the special-shaped elastic sleeve 700 are fixed by the setting of the clamping device 800, so as to prevent the special-shaped elastic sleeve 700 from moving as a whole under the action of external force, causing pulling on the cable 600, thereby increasing the safety of the cable 600;

[0069] The inner shell 200 is limited by the setting of the limiting device 400 to prevent the inner shell 200 from sliding easily under the action of external force.

[0070] In some embodiments of the present invention, referring to Figure 3 and Figure 5 As shown, the guide rail assembly 300 includes:

[0071] A guide rail 310, wherein the guide rail 310 is fixed on the inner side wall of the outer shell 100;

[0072] A sliding block 320 , wherein the sliding block 320 is fixed to a side surface of the inner housing 200 and slides along the guide rail 310 ;

[0073] The balls 330 are provided in two groups and are rotatably mounted on the top and bottom of the sliding block 320 and contact the guide rail 310 .

[0074] The guide rail 310 and the sliding block 320 are arranged in cooperation to guide the sliding of the inner shell 200, thereby ensuring the stability of the inner shell 200 in pulling and pushing, and preventing the inner shell 200 from tilting and getting stuck.

[0075] The ball bearing 330 is provided to reduce the friction between the guide rail 310 and the sliding block 320 through rotation, thereby improving the sliding sensitivity of the inner housing 200.

[0076] In some embodiments of the present invention, referring to Figure 3 and Figure 5 As shown, the limiting device 400 includes:

[0077] A receiving groove 410, wherein the receiving groove 410 is provided on the guide rail 310;

[0078] A receiving column 420, wherein the receiving column 420 is fixed on the inner wall of the outer shell 100 and is located at the center of the receiving groove 410;

[0079] A limiting plate 430, wherein the limiting plate 430 is rotatably sleeved on the outer side of the receiving column 420;

[0080] The positioning device 440 is installed on the sliding block 320 .

[0081] The matching arrangement of the receiving groove 410 and the receiving column 420 ensures the normal installation of the limiting plate 430 and the normal rotation of the limiting plate 430, so that the inner shell 200 can be normally pulled out or pushed in.

[0082] In some embodiments of the present invention, referring to Figure 6 As shown, the positioning device 440 includes:

[0083] A mounting groove 441, wherein the mounting groove 441 is formed on the top of the sliding block 320, and an inner wall of the mounting groove 441 is in contact with the limiting plate 430;

[0084] A first spring 442, wherein the first spring 442 is fixed on the inner bottom wall of the mounting groove 441;

[0085] The supporting plate 443 is fixed on the top of the first spring 442 and contacts the limiting plate 430 .

[0086] The position of the sliding block 320 is limited by the contact between the inner wall of the mounting groove 441 and the limiting plate 430, so as to prevent the inner housing 200 from sliding easily under the action of external force, and the mounting groove 441 also provides space for the installation of the first spring 442 and the supporting plate 443;

[0087] The first spring 442 and the support plate 443 are arranged in cooperation with each other to compress the inner shell 200 when it is subjected to a large pulling force, thereby providing space for the rotation and deviation of the limit plate 430 .

[0088] In some embodiments of the present invention, referring to Figure 4 As shown, the extrusion device 500 comprises:

[0089] A rear cover 510, wherein the rear cover 510 is detachably fixed to the rear opening of the outer shell 100;

[0090] a second spring 520 , wherein the second spring 520 is fixed to the inner wall of the rear cover 510 ;

[0091] The push plate 530 is fixed on the second spring 520 and contacts the inner housing 200 .

[0092] The rear cover 510 is provided to ensure the normal installation of the second spring 520 and the push plate 530, so that the second spring 520 can be compressed normally;

[0093] The elastic force of the second spring 520 drives the push plate 530 to apply a thrust to the inner housing 200, so that the limit plate 430 contacts and squeezes the inner wall of the installation groove 441;

[0094] The push plate 530 is provided to prevent the second spring 520 from directly contacting the inner housing 200 and causing scratches on the inner housing 200 .

[0095] In some embodiments of the present invention, referring to Figure 2 As shown, the clamping device 800 comprises:

[0096] Positioning sleeves 810, two positioning sleeves 810 are respectively fixed on the inner housing 200 and the rear cover 510;

[0097] The plug connector 820 is fixed to the end of the special-shaped elastic sleeve 700 and plugged into the interior of the positioning sleeve 810 .

[0098] Among them, the two ends of the special-shaped elastic sleeve 700 are respectively fixed on the inner shell 200 and the rear cover 510 through the matching setting of the positioning sleeve 810 and the plug connector 820. When the inner shell 200 slides, the special-shaped elastic sleeve 700 can be stretched normally to prevent the special-shaped elastic sleeve 700 from moving as a whole.

[0099] In some embodiments of the present invention, referring to Figure 1 As shown, it also includes:

[0100] Two L-shaped mounting plates 900 are provided and are fixed on two sides of the outer shell 100 respectively.

[0101] The L-shaped mounting plate 900 can ensure the normal installation and fixation of the outer shell 100 and ensure the stability of the outer shell 100 .

[0102] Working method of the utility model:

[0103] When the inner shell 200 is pulled out, the inner shell 200 is pulled to slide. When the inner shell 200 slides, the inner wall of the mounting groove 441 is driven to move and squeeze the limit plate 430, so that the limit plate 430 rotates counterclockwise to squeeze the support plate 443, so that the support plate 443 descends and squeezes the first spring 442. When the limit plate 430 rotates past the vertical axis of the receiving column 420, the first spring 442 is reset and pushes the support plate 443 to quickly reset, so that the inner shell 200 can be pulled out normally. At the same time, when the inner shell 200 is pulled out, the special-shaped elastic sleeve 700 is stretched.

[0104] When the inner shell 200 is pushed in, the inner shell 200 is pushed to move toward the inside of the outer shell 100. When the inner shell 200 is pushed in, the sliding block 320 will squeeze the limit plate 430 to rotate clockwise, and the inner shell 200 can be pushed in normally, and as it is pushed in, it will contact the push plate 530 and squeeze the second spring 520, so that the second spring 520 is compressed and accumulates force. When the limit plate 430 corresponds to the installation groove 441, due to the heavier head of the limit plate 430, the limit plate 430 will rotate to the inside of the installation groove 441, releasing the force on the inner shell 200, and the second spring 520 will push the inner shell 200 to move, so that the inner wall of the installation groove 441 contacts the limit plate 430, and at the same time, the elastic force of the first spring 442 is greater than the elastic force of the second spring 520.

[0105] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A pull-out optical fiber terminal box, characterized in that: include: An outer shell (100); An inner shell (200), wherein the inner shell (200) is slidably mounted inside the outer shell (100); A guide rail assembly (300), wherein two guide rail assemblies (300) are provided and are respectively installed on two sides of the inner shell (200); A limiting device (400), wherein the limiting device (400) is installed on the guide rail assembly (300) and limits the pushed-in inner shell (200); An extrusion device (500), the extrusion device (500) is detachably mounted at the rear opening of the outer shell (100) and is in contact with the inner shell (200); A cable (600), the cable (600) being mounted on the inner housing (200) and passing through the extrusion device (500); A special-shaped elastic sleeve (700), wherein the special-shaped elastic sleeve (700) is sleeved on the outside of the cable (600) and drives the cable (600) to be spirally stored; A clamping device (800), wherein two clamping devices (800) are provided and are respectively installed at two ends of the special-shaped elastic sleeve (700).

2. The pull-out optical fiber terminal box according to claim 1, characterized in that: The guide rail assembly (300) comprises: A guide rail (310), wherein the guide rail (310) is fixed on the inner side wall of the outer shell (100); A sliding block (320), wherein the sliding block (320) is fixed to a side surface of the inner housing (200) and slides along the guide rail (310); The balls (330) are provided in two groups and are rotatably mounted on the top and bottom of the sliding block (320) and contact the guide rail (310).

3. The pull-out optical fiber terminal box according to claim 1, characterized in that: The limiting device (400) comprises: A storage groove (410), wherein the storage groove (410) is provided on the guide rail (310); A receiving column (420), wherein the receiving column (420) is fixed on the inner side wall of the outer shell (100) and is located at the center of the receiving groove (410); A limiting plate (430), wherein the limiting plate (430) is rotatably sleeved on the outer side of the receiving column (420); A positioning device (440), wherein the positioning device (440) is installed on the sliding block (320).

4. The pull-out optical fiber terminal box according to claim 3, characterized in that: The positioning device (440) comprises: An installation groove (441), wherein the installation groove (441) is provided at the top of the sliding block (320), and an inner wall of the installation groove (441) is in contact with the limiting plate (430); A first spring (442), the first spring (442) being fixed on the inner bottom wall of the mounting groove (441); A supporting plate (443) is fixed on the top of the first spring (442) and is in contact with the limiting plate (430).

5. The pull-out optical fiber terminal box according to claim 1, characterized in that: The extrusion device (500) comprises: A rear cover (510), wherein the rear cover (510) is detachably fixed to the rear opening of the outer shell (100); a second spring (520), the second spring (520) being fixed on the inner wall of the rear cover (510); A push plate (530) is fixed on the second spring (520) and is in contact with the inner housing (200).

6. The pull-out optical fiber terminal box according to claim 1, characterized in that: The clamping device (800) comprises: Positioning sleeves (810), wherein two positioning sleeves (810) are respectively fixed on the inner shell (200) and the rear cover (510); The plug connector (820) is fixed to the end of the special-shaped elastic sleeve (700) and plugged into the interior of the positioning sleeve (810).

7. The pull-out optical fiber terminal box according to claim 1, characterized in that: Also includes: Two L-shaped mounting plates (900) are provided and are respectively fixed on two sides of the outer shell (100).

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