Optical fiber head locking mechanism

Abstract

The utility model relates to an optical fiber head locking mechanism. The optical fiber head locking mechanism comprises a connecting plug and a locking seat, the locking seat comprises a lock nut, a locking ring, a lock sleeve and a fixed seat which are arranged in sequence, and a locking steel ball is arranged between the lock nut and the locking ring; the connecting plug comprises a connecting ring surface, the position of the connecting ring surface is opposite to the position of the locking steel ball, the lock nut is connected with the lock sleeve, corrugated rubber is connected between the lock sleeve and the fixed seat, and a sealing leather sheath is arranged on the connecting plug. Through the optical fiber head locking mechanism provided by the invention, the optical fiber head in the form of a connecting plug can be effectively locked, the convenience of locking connection operation is improved, the anti-loosening effect is enhanced, and the sealing performance of the connection part is ensured.

Description

Technical Field

[0001] This application relates to the technical field of laser processing, and more specifically, to a fiber optic head locking mechanism. Background Art

[0002] The main purpose of locking existing fiber optic heads is to ensure a stable connection between the optical fiber and the optical interface of the laser device, preventing energy loss or equipment failure caused by factors such as vibration and loosening during laser transmission.

[0003] The locking methods of laser fiber optic heads vary depending on the equipment model and the type of fiber optic interface, but generally can be classified into thread locking, snap locking, and mechanical locking.

[0004] Thread locking has poor form stability and is prone to loosening. Snap locking requires specific tools or techniques to complete, while mechanical locking has a complex structure and high cost.

[0005] How to ensure the reliability of the fiber optic head locking connection is an important factor in ensuring the normal operation of the equipment and the stable transmission of laser light. Summary of the Utility Model

[0006] The purpose of this application is to provide a fiber optic head locking mechanism with a simple structure, convenient operation, which can effectively avoid loosening after locking and ensure tightness.

[0007] To achieve the above purpose, the present utility model provides a fiber optic head locking mechanism, including: a plug connector and a locking seat;

[0008] The locking seat includes a lock nut, a locking ring, a lock sleeve, and a fixing seat arranged in sequence. Locking steel balls are arranged between the lock nut and the locking ring;

[0009] The plug connector includes a plugging ring surface, which is opposite to the position of the locking steel balls. The lock nut is connected to the lock sleeve, and a corrugated rubber is connected between the lock sleeve and the fixing seat. A sealing leather sleeve is arranged on the plug connector.

[0010] In an alternative embodiment, the plug connector passes through the lock nut, the locking ring, and the lock sleeve in sequence and is plugged into the fixing seat;

[0011] The locking ring includes a fixed conical surface, and the plug connector includes a plugging conical surface, and the plugging conical surface is arranged in cooperation with the fixed conical surface.

[0012] In an alternative embodiment, fixing pins are arranged on the plugging ring surface of the plug connector, and fixing lock grooves in the form of notches are arranged on the locking ring, and the fixing pins are in clearance fit with the fixing lock grooves.

[0013] In an alternative embodiment, a plurality of ball mounting grooves are provided on the locking ring, the locking balls are received in the ball mounting grooves, a locking tapered groove is provided on the inner circumferential wall of the lock nut, and the locking tapered groove gradually contracts inward from outside to inside along the axial direction of the lock nut.

[0014] In an alternative embodiment, the lock nut includes a locking inner groove, and a docking ring platform is provided on the radially outer side of the locking inner groove;

[0015] The lock sleeve includes a boss at the top, a lock sleeve ring platform is provided on the radially outer side of the boss, and the lock sleeve ring platform is provided at the lower part of the boss;

[0016] The boss can be received in the locking inner groove, and a corrugated spring is provided between the docking ring platform and the lock sleeve ring platform.

[0017] In an alternative embodiment, the lock nut is sleeved on the outside of the locking ring, the lock sleeve is threadedly connected to the locking ring and the lock nut respectively, the thread is a fine pitch thread with a pitch of 1 - 1.5 mm, and the thread diameters on the lock nut, the lock sleeve and the locking ring are greater than 36 mm.

[0018] In an alternative embodiment, a transfer seat is further included, the transfer seat is provided between the fixed seat and the locking ring, and a first sealing ring is provided at the docking part of the locking ring and the transfer seat.

[0019] In an alternative embodiment, the transfer seat is connected to the fixed seat by fixing screws, and a second sealing ring and a third sealing ring are provided at the connection parts of the fixing screws.

[0020] In an alternative embodiment, the corrugated rubber includes a tension spring rubber, and is sleeved on the outside of the transfer seat and the lower half of the outside of the lock sleeve. The top of the corrugated rubber is connected to the bottom of the lock sleeve ring platform, and the bottom of the corrugated rubber is connected to the fixed seat.

[0021] In an alternative embodiment, the transfer seat is connected to the locking ring by connection screws.

[0022] Through the optical fiber head locking mechanism in the present application, an optical fiber head in the form of a plug can be effectively locked, the convenience of the locking connection operation can be improved, the anti-loosening effect can be enhanced, and the sealing performance of the connection part can be ensured.

[0023] Other features and advantages of the present application will be described in detail in the subsequent specific embodiment part. Brief Description of the Drawings

[0024] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0025] Figure 1 Schematic diagram of the split structure of the locking seat in the present application;

[0026] Figure 2 Schematic diagram of the structure after the locking seat is assembled;

[0027] Figure 3 Schematic diagram of the side view structure of the locking ring;

[0028] Figure 4 Schematic diagram of the top view structure of the locking ring;

[0029] Figure 5 Schematic diagram of the sectional view structure of the locking ring;

[0030] Figure 6 Schematic diagram of the mating structure of the plug joint and the locking seat.

[0031] Icon:

[0032] 101 - Lock nut; 1011 - Locking taper groove;

[0033] 102 - Wave spring; 103 - Locking steel ball;

[0034] 104 - Locking ring; 1041 - Fixed lock groove; 1042 - Steel ball installation groove; 1043 - Locking ring thread; 1044 - Fixed conical surface;

[0035] 105 - First sealing ring; 106 - Locking sleeve; 107 - Second sealing ring; 108 - Third sealing ring; 109 - Corrugated rubber; 110 - Fixed seat; 111 - Adapter seat;

[0036] 200 - Plug joint; 201 - Fixed pin; 202 - Plugging conical surface; 203 - Sealing leather sleeve. Specific embodiments

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some, rather than all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "inner" and "outer" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, terms such as "first" and "second" are only used for differential description and cannot be construed as indicating or implying relative importance.

[0039] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set" and "connected" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0040] The optical fiber head locking mechanism in the present application is mainly used for inserting and locking the optical fiber head on the locking seat. With a simple structure, it improves the convenience of disassembly and assembly operations, while preventing backfeeding at the connection part and ensuring the sealing effect.

[0041] See Figure 1 and in combination with Figures 2 - 6 , in the optical fiber head locking mechanism of the present utility model, the main structure includes an insertion joint 200 and a locking seat. The insertion joint 200 is specifically the optical fiber head to be inserted and locked, and the optical fiber head is mainly inserted and locked on the locking seat.

[0042] The locking seat is mainly an assembled structure, specifically including a lock nut 101, a locking ring 104, a lock sleeve 106, and a fixing seat 110 arranged in sequence. Specifically, the lock nut 101 is sleeved on the outside of the locking ring 104. A locking ring thread 1043 is provided on the outside of the locking ring 104. The lock sleeve 106 is threadedly sleeved on the outside of the locking ring 104. The lock nut 101 is threadedly connected to the lock sleeve 106. The locking ring 104 is connected to an adapter seat 111, and the adapter seat 111 is connected to the fixing seat 110, forming the overall structure of the locking seat through the above components.

[0043] A locking steel ball 103 is arranged between the lock nut 101 and the locking ring 104. By the inward pressing of the lock nut 101 on the locking steel ball 103, the locking steel ball 103 squeezes and locks the outer wall of the insertion joint 200, realizing the locking connection of the insertion joint 200 on the locking seat.

[0044] The plug connector 200 includes a plugging annular surface, and the plugging annular surface is locked and installed by the locking steel balls 103 through inward contraction and extrusion. Based on this, the positions of the plugging annular surface and the locking steel balls 103 are opposite, and the extrusion force of the locking steel balls 103 can act on the plugging annular surface to lock and fix it.

[0045] The lock nut 101 is threadedly connected to the lock sleeve 106, which can ensure the stable and reliable connection of the lock nut 101, the locking ring 104 and the lock sleeve 106. At the same time, in order to ensure the sealing performance and dust and waterproof performance of the connection part, a corrugated rubber 109 is connected between the lock sleeve 106 and the fixed seat 110. Further, a sealing leather sleeve 203 is provided on the plug connector 200. The sealing leather sleeve 203 is specifically a flexible short section outside the plug connector 200, which can cover and shield the connection part between the plug connector 200 and the lock nut 101, as well as the lock nut 101 and the lock sleeve 106, so as to achieve good sealing.

[0046] In one specific embodiment, when the plug connector 200 is locked and installed, it sequentially passes through the lock nut 101, the locking ring 104 and the lock sleeve 106 and is inserted into the fixed seat 110. The plugging annular surface is specifically a flat wall annular surface structure and is opposite to the position of the lock nut 101.

[0047] From the perspective of facilitating plugging and matching, the locking ring 104 includes a fixed conical surface 1044 on the inner side, and the plug connector 200 includes a plugging conical surface 202. The plugging conical surface 202 is arranged at the lower part of the plugging annular surface. By arranging the plugging conical surface 202 and the fixed conical surface 1044 in cooperation, the plug connector 200 can be inserted into the locking ring 104, and the plug connector 200 can be limited and fixed through the fitting of the two conical surfaces.

[0048] For the convenience of positioning, a fixing pin 201 is arranged on the plugging annular surface of the plug connector 200, and a fixing lock groove 1041 in the form of a notch is arranged on the locking ring 104. The fixing pin 201 and the fixing lock groove 1041 are in a large clearance fit, which plays a role of positioning and indication, and effectively and conveniently performs paired plugging.

[0049] A plurality of steel ball installation grooves 1042 are arranged on the locking ring 104, and the locking steel balls 103 are accommodated in the steel ball installation grooves 1042. A locking conical groove 1011 is arranged on the inner circumferential wall of the lock nut 101. The locking conical groove 1011 gradually contracts inward from the outside to the inside along the axial direction of the lock nut 101. Through this setting method, on the one hand, when the lock nut 101 is adjusted axially along the locking ring 104, the clearance between the locking conical groove 1011 and the locking steel balls 103 can be adjusted to control that the locking steel balls 103 do not fall off when they are in a loose state in the steel ball installation grooves 1042. On the other hand, when the lock nut 101 is tightened relative to the locking ring 104 and the lock sleeve 106, the circumferential groove surface of the locking conical groove 1011 can extrude the locking steel balls 103 to ensure the stable and reliable locking and fixing of the plug connector 200.

[0050] From the perspective of the thread fit of the lock nut 101 and the docking angle with the lock sleeve 106. In another specific embodiment, the lock nut 101 includes a locking inner groove, and a docking ring platform is arranged on the radially outer side of the locking inner groove.

[0051] The lock sleeve 106 includes a boss at the top, and a lock sleeve 106 ring platform is arranged on the radially outer side of the boss. The lock sleeve 106 ring platform is arranged at the lower part of the boss.

[0052] During fitting, the boss at the top of the lock sleeve 106 can be accommodated in the locking inner groove. Fine-threaded screws are provided on the groove surface of the locking inner groove and cooperate with the fine-threaded screws on the side wall of the boss of the lock sleeve 106. After the lock nut 101 is screwed onto the lock sleeve 106 in place, the docking ring platform of the lock nut 101 fits with the lock sleeve 106 ring platform of the lock sleeve 106. In order to prevent relative rotation between the lock nut 101 and the lock sleeve 106 and prevent unscrewing of the screw connection, a wave spring 102 is arranged between the docking ring platform and the lock sleeve 106 ring platform.

[0053] The arrangement of the wave spring 102 can be gradually compressed by force in a wavy shape during the connection process of the lock nut 101 and the lock sleeve 106. After the lock sleeve 106 is tightened, the middle wave spring 102 has an outward tension on the upper and lower lock nut 101 and lock sleeve 106, effectively playing a role in preventing loosening.

[0054] Based on the above description, the lock nut 101 is sleeved on the outside of the locking ring 104. The lock sleeve 106 is threadedly connected to the locking ring 104 and the lock nut 101 respectively. The mating threads among the three are fine-threaded screws with a pitch of 1 - 1.5 mm, which can be 1 mm or 1.5 mm, to ensure stable and tight connection.

[0055] To ensure sufficient insertion space, the thread diameters of the nut, the lock sleeve 106, and the locking ring 104 are greater than 36 mm, which can provide sufficient installation space on the radially inner side. The materials of the nut, the lock sleeve 106, and the locking ring 104 are all stainless steel materials to enhance the corrosion resistance through stainless steel.

[0056] Furthermore, the adapter seat 111 is arranged between the fixed seat 110 and the locking ring 104. A first sealing ring 105 is arranged at the docking part of the locking ring 104 and the adapter seat 111. The adapter seat 111 is connected to the fixed seat 110 through fixing screws. A second sealing ring 107 and a third sealing ring 108 are arranged at the connection part of the fixing screws. Through the sealing rings at different connection parts, an effective sealing effect can be ensured inside the locking seat.

[0057] In addition to the internal seal described above, the corrugated rubber 109 can form a good seal externally. Specifically, the corrugated rubber 109 in the present utility model is installed between the fixed seat 110 and the lock sleeve 106, and sleeves and wraps the lower half of the lock sleeve 106 and the whole of the adapter block.

[0058] Specifically, the corrugated rubber 109 is a corrugated rubber 109 in the form of a tension spring and has a certain elongation elastic force. After stretching and connecting, the top end of the corrugated rubber 109 is connected to the lower side root of the annular platform of the lock sleeve 106, and the top end of the corrugated rubber 109 is connected to the fixed seat 110, ensuring the external seal at the connection part between the lock sleeve 106 and the adapter seat 111.

[0059] To ensure the stable installation of the adapter seat 111, the adapter seat 111 is connected to the bottom of the locking ring 104 through connecting screws.

[0060] Through the optical fiber head locking mechanism in the present utility model, it can ensure the stable and reliable locking installation of the optical fiber head. At the same time, through the cooperation of different components of the locking seat, it can enhance the convenience of the disassembly and assembly operation of the optical fiber head in the form of a simplified structure, and can effectively avoid locking loosening, so that different connection parts inside and outside have a good sealing effect.

[0061] During the locking installation process of the plug connector 200, insert the plug connector 200, loosen the lock nut 101 and the lock sleeve 106 to the bottommost position. Align the fixed lock groove 1041 of the locking ring 104 with the fixed pin 201 of the plug connector 200. First, tighten the lock nut 101. During the tightening process, the locking cone groove 1011 moves upward, and the locking steel balls 103 in the corresponding steel ball installation grooves 1042 gradually contract from a loose state to a tightened state; at the same time, the fixed conical surface 1044 on the locking ring 104 gradually approaches the plugging conical surface 202 of the plug connector 200. When the two conical surfaces are in contact, the locking steel balls 103 are just tightened. At the same time, the sealing leather sleeve 203 on the plug connector 200 just covers the lock nut 101 and the lock sleeve 106 for sealing.

[0062] Then, tighten the lock sleeve 106. The boss at the top of the lock sleeve 106 just plugs into the locking inner groove of the lock nut 101. At the same time, the wave spring 102 is gradually compressed by force from a wavy shape. After tightening the lock sleeve 106, the wave spring 102 between the lock nut 101 and the lock sleeve 106 has an outward tension on the upper and lower lock nut 101 and lock sleeve 106, playing a role in preventing loosening. At the same time, during the process of tightening the lock sleeve 106, the corrugated rubber 109 connected to the lock sleeve 106 and the fixed seat 110 is stretched, playing a sealing role.

[0063] More specifically, when assembling the locking seat, first, the lock sleeve 106 is connected to the locking ring 104. The wave spring 102 is placed at the position of the boss at the upper end of the lock sleeve 106, and then the lock nut 101 is screwed in. At the same time, the lock nut 101 is rotated so that the locking cone groove 1011 faces away from the position of the steel ball installation groove 1042. After the steel ball installation groove 1042 is cleared, the locking steel balls 103 are sequentially placed in the installation groove. Then, the lock nut 101 is rotated in the reverse direction to press the locking steel balls 103. After the first sealing ring 105 is installed at the bottom of the locking ring 104, the adapter seat 111 is connected to the locking ring 104 by screws.

[0064] At this time, the lock nut 101 is rotated again so that the locking cone groove 1011 faces away from the steel ball installation groove 1042 and is screwed to the end. At this time, the lock sleeve 106 contacts the adapter seat 111, and the steel balls do not fall off in the steel ball installation groove 1042. Then, the corrugated rubber 109 is sleeved to ensure that the upper port of the corrugated rubber 109 contacts the docking ring platform of the lock sleeve 106, and the lower port of the corrugated rubber 109 contacts the bottom of the adapter seat 111. Then, the second sealing ring 107 and the third sealing ring 108 are respectively installed at the bottom of the adapter seat 111, and the adapter seat 111 is connected to the fixed seat 110 by connecting screws.

[0065] Finally, the plug connector 200 is inserted into the locking seat, the fixing pin 201 is aligned with the fixed locking groove 1041, and the lock nut 101 and the lock sleeve 106 are tightened to lock the plug connector 200.

[0066] The machining tolerance of the internal thread of the lock nut 101 and the lock sleeve 106 shall be 6H, the machining tolerance of the external thread of the locking ring 104 shall be 6g. The wave spring 102 is required to be a wave spring 102 with 3 waves and no opening. The locking steel balls 103 are 5mm steel balls. Different sealing rings are made of nitrile rubber or fluororubber, and the corrugated rubber 109 is made of fluororubber.

[0067] It should be noted that, without conflict, the features in the embodiments of the present application can be combined with each other.

[0068] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An optical fiber head locking mechanism, characterized in that, Comprising: Plug connector and locking seat; The locking seat includes a lock nut, a locking ring, a lock sleeve and a fixing seat arranged in sequence. Locking steel balls are arranged between the lock nut and the locking ring; The plug connector includes a plugging ring surface which is opposite to the position of the locking steel balls. The lock nut is connected to the lock sleeve. A corrugated rubber is connected between the lock sleeve and the fixing seat. A sealing leather sleeve is arranged on the plug connector.

2. The fiber optic head locking mechanism according to claim 1, wherein, The plug connector sequentially passes through the lock nut, the locking ring and the lock sleeve and is plugged into the fixing seat; The locking ring includes a fixed conical surface, and the plug connector includes a plugging conical surface which is arranged in cooperation with the fixed conical surface.

3. The optical fiber head locking mechanism according to claim 1, characterized in that, Fixing pins are arranged on the plugging ring surface of the plug connector, and a fixing lock groove in the form of a notch is arranged on the locking ring. The fixing pins and the fixing lock grooves are in clearance fit.

4. The fiber optic head locking mechanism according to claim 1, wherein, A plurality of steel ball mounting grooves are arranged on the locking ring, and the locking steel balls are accommodated in the steel ball mounting grooves. A locking conical groove is arranged on the inner circumferential wall of the lock nut, and the locking conical groove gradually contracts from outside to inside along the axial direction of the lock nut.

5. The fiber optic head locking mechanism according to claim 1, characterized in that, The lock nut includes a locking inner groove, and a docking ring platform is arranged on the radially outer side of the locking inner groove; The lock sleeve includes a boss at the top, and a lock sleeve ring platform is arranged on the radially outer side of the boss. The lock sleeve ring platform is arranged at the lower part of the boss; The boss can be accommodated in the locking inner groove, and a waveform spring is arranged between the docking ring platform and the lock sleeve ring platform.

6. The fiber optic head locking mechanism according to claim 1, characterized in that, The lock nut is sleeved on the outer side of the locking ring. The lock sleeve is respectively threadedly connected to the locking ring and the lock nut. The thread is a fine pitch thread with a pitch of 1 - 1.5 mm, and the thread diameters on the lock nut, the lock sleeve and the locking ring are greater than 36 mm.

7. The fiber optic head locking mechanism according to claim 1, characterized in that It further includes an adapter seat which is arranged between the fixing seat and the locking ring. A first sealing ring is arranged at the docking part of the locking ring and the adapter seat.

8. The fiber optic head locking mechanism according to claim 7, characterized in that, The adapter seat is connected to the fixing seat by fixing screws, and second and third sealing rings are arranged at the connection parts of the fixing screws.

9. The fiber optic head locking mechanism according to claim 7, wherein, The corrugated rubber includes a tension spring rubber and is sleeved on the outer side of the adapter seat and the lower half part of the outer side of the lock sleeve. The top of the corrugated rubber is connected to the bottom of the lock sleeve ring platform, and the bottom of the corrugated rubber is connected to the fixing seat.

10. The fiber optic head locking mechanism according to claim 7, characterized in that, The adapter seat is connected to the locking ring by connection screws.

Images