Optical fiber connection structure

Abstract

The utility model relates to an optical fiber connection structure, and the structure comprises a cable which comprises an outer coating layer, and a tension line and a plurality of optical fiber cores which are disposed in the outer coating layer; an insertion space is formed in the shell, one end of the shell is provided with an insertion hole for inserting a cable, and the other end of the shell forms an opening part; the pressing sheet is connected with the shell; one part of the connecting plug is arranged in the inserting space, and the other part of the connecting plug extends outwards through the opening part; a winding sleeve is arranged on the edge of the connecting plug; the connection between the optical fiber cable core and the connecting plug is in a non-tensioning state; after the tension wire bypasses the winding sleeve, the free end of the tension wire is clamped by the pressing sheet and the shell and is in a tensioned state; the connecting screw penetrates through the winding sleeve to be connected with the shell and locks the shell and the winding sleeve. According to the utility model, the tension line bears the tensile force generated on the cable when the plug connector is pulled out, thereby preventing the optical fiber cable from being snapped due to stress.

Description

Technical Field

[0001] The present application relates to the technical field of optical fiber equipment, and in particular to an optical fiber connection structure. Background Art

[0002] For USB connectors, HDMI connectors and other connectors, in order to ensure stability after plugging, the connectors are usually pre-tightened in the structural size design after plugging. A certain amount of force needs to be applied when unplugging the connector, especially if the force is applied in the wrong direction when unplugging the connector, then a greater force is required to unplug the connector. In the cable structure inside the connector, the optical fiber core will bear a certain amount of tension due to the unplugging process of the connector, so there is a possibility of breaking the optical fiber core. Utility Model Content

[0003] Based on this, it is necessary to provide an optical fiber connection structure, including:

[0004] The cable comprises an outer sheath, a tension wire and a plurality of optical fiber cores disposed in the outer sheath;

[0005] The housing has a plug-in space formed inside, a plug-in hole for accommodating the insertion of the cable at one end, and an opening formed at the other end;

[0006] A pressing sheet connected to the housing;

[0007] The plug connector has a portion placed in the plug space and a portion extending outward through the opening; a winding sleeve is provided at the edge of the plug connector; the optical fiber core is connected to the plug connector in a non-tensioned state; after the tension wire passes through the winding sleeve, the free end is clamped by the pressing sheet and the housing and is in a tensioned state;

[0008] The connecting screw passes through the winding sleeve and is connected to the housing to lock the housing and the winding sleeve.

[0009] Specifically, the shell includes an upper shell, a lower shell and a tail shell; the upper shell is connected to the lower shell to form a plug-in space, and the tail shell is connected to the ends of the upper shell and the lower shell; the lower shell includes a first edge contour surface, and a first recess is provided on the first edge contour surface, and a first mounting hole for accommodating the winding sleeve to pass through is provided at one end of the first recess, and the other end extends toward the plug hole; the upper shell includes a second edge contour surface, and a second recess is provided on the second edge contour surface to cooperate with the first recess, and the first contour surface and the second edge contour surface are fitted together so that the first recess and the second recess form a wiring channel for accommodating the tension line to pass through.

[0010] Specifically, a second mounting hole aligned with the first mounting hole is provided on the upper shell; the first mounting hole includes a first light hole section and a threaded hole section from top to bottom; the second mounting hole includes a blind hole section, a through hole section and a second light hole section in sequence from top to bottom; one end of the winding sleeve is inserted into the first light hole section, and the other end is inserted into the second light hole section; the connecting screw passes through the blind hole section, the through hole section, and the winding sleeve in sequence and is connected to the threaded hole section.

[0011] Specifically, the first contour surface is heat-sealed to the second edge contour surface.

[0012] Specifically, the tail shell includes a connecting end, and the connecting end includes a terminal tube body for accommodating the passage of the optical cable. The terminal tube body is provided with an annular clamping block, and the upper shell and the lower shell are respectively provided with clamping grooves that engage with the annular clamping block.

[0013] Specifically, the compression piece is pressed onto the end tube body, and both ends of the compression piece are connected to the lower shell body via screws respectively.

[0014] Specifically, the tension line is compressed between the compression piece and the end tube body.

[0015] Specifically, a striped anti-bending protective cover is provided on the tail shell.

[0016] Specifically, a fixing portion is provided on the lower shell, and the fixing portion is located between the card slot and the plug connector; the fixing portion includes a wire slot corresponding to the optical fiber cores one by one, and the optical fiber cores are card-mounted in the wire slot.

[0017] Specifically, the plug connector is an HDMI plug connector or a USB plug connector.

[0018] Beneficial effect: The optical fiber connection structure provided by the utility model keeps the optical fiber core in a non-tensioned state, and the tension force generated on the cable when the plug connector is pulled out is borne by the tension wire, thereby preventing the optical fiber from being broken due to the force. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application 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 present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a partially exploded schematic diagram of the connection structure;

[0021] Figure 2 It is the overall schematic diagram of the connection structure;

[0022] Figure 3 For along Figure 2 Sectional view of AA.

[0023] Description of reference numerals: 1. cable; 2. housing; 3. pressing piece; 4. plug connector; 5. connecting screw;

[0024] 11. Tension wire; 12. Optical fiber core;

[0025] 21. Lower shell; 22. Upper shell; 23. Tail shell;

[0026] 211, first edge contour surface; 212, first recess; 213, first light hole segment; 214, threaded hole segment; 215, wire groove;

[0027] 221, second edge contour surface; 222, second recess; 223, blind hole segment; 224, through hole segment; 225, second light hole segment; 226, card slot;

[0028] 231, end tube body; 232, annular clamping block; 233, anti-bending protective sleeve;

[0029] 41. Winding sleeve; 42. Winding groove. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying 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 the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] Example

[0037] Reference Figure 1As shown, this embodiment provides a fiber optic connection structure, including a cable 1, a shell 2, a clamping plate 3, a plug connector 4 and a connecting screw 5. The cable 1 includes an outer sheath, a tension wire 11 and a plurality of optical fiber cores 12 disposed in the outer sheath. A plug-in space is formed inside the shell 2, one end of the plug-in space is provided with a plug hole for accommodating the insertion of the cable 1, and the other end forms an opening. The clamping plate 3 is connected to the shell 2 and is used to fix the end of the tension wire 11. A portion of the plug connector 4 is placed in the plug-in space, and a portion extends outward through the opening. The plug connector 4 can be an HDMI plug connector 4 or a USB plug connector 4, or other plug connectors 4. In this embodiment, the HDMI plug connector 4 is shown in the figure. A winding sleeve 41 is provided at the edge of the plug connector 4, and the plug connector 4 and the winding sleeve 41 are an integral structure. The optical fiber core 12 is connected to the plug connector 4 in a non-tensioned state; the free end of the tension wire 11 is clamped by the compression plate 3 and the housing 2 after passing through the winding sleeve 41, and is in a tensioned state. A winding groove 42 for accommodating the tension wire 11 is provided between the plug connector 4 and the winding sleeve 41. When the plug connector 4 is pulled out and subjected to force, the tension wire 11 transmits the pulling force to the outer layer to prevent the optical fiber core 12 from being subjected to force. The connecting screw 5 passes through the winding sleeve 41 and is connected to the housing 2, locking the housing 2 and the winding sleeve 41.

[0038] The optical fiber connection structure provided in this embodiment keeps the optical fiber core 12 in a non-tensioned state, and the tension wire 11 bears the tension on the cable 1 when the plug connector 4 is pulled out, thereby preventing the optical fiber from being broken due to the force.

[0039] Specifically, the housing 2 includes an upper shell 22, a lower shell 21 and a tail shell 23. A plug-in space is formed between the upper shell 22 and the shell to wrap part of the plug connector 4. The tail shell 23 is connected to the ends of the upper shell 22 and the lower shell 21. The lower shell 21 includes a first edge contour surface 211, on which a first recess 212 is provided, one end of the first recess 212 is provided with a first mounting hole for accommodating the winding sleeve 41 to pass through, and the other end extends to the plug hole; the upper shell 22 includes a second edge contour surface 221, on which a second recess 222 matching the first recess 212 is provided, and the first contour surface and the second edge contour surface 221 are fitted so that the first recess 212 and the second recess 222 form a wiring channel for accommodating the tension wire 11 to pass through. Allowing the tension wire 11 to pass through the wiring channel provides a wiring space for the tension wire 11 on the one hand, and avoids interference with the tension wire 11 on the other hand. In this embodiment, the first contour surface and the second edge contour surface 221 are attached and connected by heat sealing.

[0040] In this embodiment, at least two tension wires 11 are provided, and the two tension wires 11 are respectively located on both sides of the plug connector 4, so as to form a symmetrical structure with stable force.

[0041] Reference Figure 3 As shown, the upper shell 22 is provided with a second mounting hole aligned with the first mounting hole; the first mounting hole includes a first light hole section 213 and a threaded hole section 214 from top to bottom; the second mounting hole includes a blind hole section 223, a through hole section 224 and a second light hole section 225 from top to bottom; one end of the winding sleeve 41 is inserted into the first light hole section 213, and the other end is inserted into the second light hole section 225; the connecting screw 5 passes through the blind hole section 223, the through hole section 224, and the winding sleeve 41 in sequence and is connected to the threaded hole section 214. The relative position between the winding sleeve 41 and the shell 2 is limited by the connecting screw 5, so as to keep the plug 4 stable.

[0042] Specifically, the tail housing 23 includes a connection end, and the connection end includes a terminal tube body 231 for accommodating the optical cable to pass through, and the terminal tube body 231 is provided with an annular clamping block 232, and the upper housing 22 and the lower housing 21 are respectively provided with a clamping groove 226 engaged with the annular clamping block 232. The compression piece 3 is pressed on the terminal tube body 231, and the two ends of the compression piece 3 are respectively connected to the lower housing 21 by screws. Thereby, the tension line 11 is compressed between the compression piece 3 and the terminal tube body 231.

[0043] Specifically, a striped anti-bending protective cover 233 is provided on the tail shell 23 to protect the cable 1 and improve the anti-bending effect of the cable 1.

[0044] Specifically, the lower housing 21 is provided with a fixing portion, and the fixing portion is located between the card slot 226 and the plug connector 4; the fixing portion includes a wire slot 215 corresponding to the optical fiber core 12, and the optical fiber core 12 is clamped in the wire slot 215. The optical fiber cores 12 are clamped one by one by the fixing portion to avoid mutual interference between the optical fiber cores 12. The wire slot 215 is made into an arc shape, so as to avoid the optical fiber core 12 being in a tensioned state.

[0045] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An optical fiber connection structure, characterized in that: include: The cable comprises an outer sheath, a tension wire and a plurality of optical fiber cores disposed in the outer sheath; The housing has a plug-in space formed inside, a plug-in hole for accommodating the insertion of the cable at one end, and an opening formed at the other end; A pressing sheet connected to the housing; The plug connector has a portion placed in the plug space and a portion extending outward through the opening; a winding sleeve is provided at the edge of the plug connector; the optical fiber core is connected to the plug connector in a non-tensioned state; after the tension wire passes through the winding sleeve, the free end is clamped by the pressing sheet and the housing and is in a tensioned state; The connecting screw passes through the winding sleeve and is connected to the housing to lock the housing and the winding sleeve.

2. The optical fiber connection structure according to claim 1, characterized in that: The shell includes an upper shell, a lower shell and a tail shell; the upper shell is connected to the lower shell to form a plug-in space, and the tail shell is connected to the ends of the upper shell and the lower shell; the lower shell includes a first edge contour surface, a first recess is provided on the first edge contour surface, one end of the first recess is provided with a first mounting hole for accommodating the winding sleeve to pass through, and the other end extends to the plug hole; the upper shell includes a second edge contour surface, a second recess is provided on the second edge contour surface to cooperate with the first recess, and the first contour surface and the second edge contour surface are fitted together so that the first recess and the second recess form a wiring channel for accommodating the tension line to pass through.

3. The optical fiber connection structure according to claim 2, characterized in that: The upper shell is provided with a second mounting hole aligned with the first mounting hole; the first mounting hole includes a first light hole section and a threaded hole section from top to bottom; the second mounting hole includes a blind hole section, a through hole section and a second light hole section in sequence from top to bottom; one end of the winding sleeve is inserted into the first light hole section, and the other end is inserted into the second light hole section; the connecting screw passes through the blind hole section, the through hole section, and the winding sleeve in sequence and is connected to the threaded hole section.

4. The optical fiber connection structure according to claim 2, characterized in that: The first contour surface is heat-sealed to the second edge contour surface.

5. The optical fiber connection structure according to claim 2, characterized in that: The tail shell includes a connecting end, and the connecting end includes a terminal tube body for accommodating the passage of the optical cable. The terminal tube body is provided with an annular clamping block, and the upper shell and the lower shell are respectively provided with clamping grooves engaged with the annular clamping block.

6. The optical fiber connection structure according to claim 5, characterized in that: The compression piece is pressed on the end tube body, and the two ends of the compression piece are respectively connected to the lower shell body through screws.

7. The optical fiber connection structure according to claim 6, characterized in that: The tension line is compressed between the compression piece and the end tube body.

8. The optical fiber connection structure according to claim 5, characterized in that: A striped anti-bending protective cover is provided on the tail shell.

9. The optical fiber connection structure according to claim 2, characterized in that: The lower shell is provided with a fixing part, and the fixing part is located between the card slot and the plug connector; the fixing part includes a wire slot corresponding to the optical fiber cores one by one, and the optical fiber cores are carded in the wire slot.

10. The optical fiber connection structure according to any one of claims 1 to 9, characterized in that: The plug connector is an HDMI plug connector or a USB plug connector.

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