Optical fiber locking head

Abstract

The embodiment of the utility model provides an optical fiber locking head, which comprises a first annular structure and a second annular structure which are annularly connected around a preset structural member to form an annular mounting ring, a first through hole penetrating through the structural member is formed in the center of the structural member, and a second through hole is formed between the second annular structure and the structural member; the first annular structure is a rigid structure, and the second annular structure is a flexible structure; the guide shaft pin is arranged in the second through hole, one end of the guide shaft pin is clamped in the inner side face of the second annular structure, and the other end of the guide shaft pin is connected with the structural part; the flexible PCB is attached to the outer side face of the structural part and arranged opposite to the second annular structure, and the flexible PCB is connected with one end of the guide shaft pin; and the contact is arranged on the flexible PCB and protrudes towards the first through hole. Most functional modules in the optical fiber locking head provided by the utility model are flexible, optical fibers with different sizes can be well locked, and the optical fiber locking head is simple in structure and high in stability.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fibers, in particular to an optical fiber locking head. Background Art

[0002] In order to ensure the safety of lasers with optical fiber output heads, an optical fiber interlock is usually set on the optical fiber output head. The interlock interface is usually two spaced copper rings. When the optical fiber locking head locks the optical fiber output head, the locking head contacts the two copper rings, the interlock is closed, and the laser emits light. When the optical fiber is not locked, the interlock is disconnected, the laser light is cut off, and an alarm is issued.

[0003] Due to the locking properties of the fiber optic locking head, its closure function requires a flexible structure. A rigid structure can prevent the fiber from being inserted into the locking head or from contacting the interlocking copper ring, causing the interlock to fail to close and the laser to alarm. Existing locking heads are structurally unstable, resulting in situations where the locking head is locked but the interlock still alarms. This poses a certain risk, and the overall locking head structure is complex to install and is costly. Utility Model Content

[0004] The purpose of the utility model is to provide an optical fiber locking head, aiming to solve the problems of complex structure and unstable function of optical fiber locking heads in the prior art.

[0005] In a first aspect, an embodiment of the present invention provides a fiber locking head, comprising:

[0006] a first annular structure and a second annular structure, wherein the first annular structure and the second annular structure are connected in an annular manner around a preset structural member to form an annular mounting ring; a first through hole is formed in the center of the structural member and passes through the structural member; a second through hole is formed between the second annular structure and the structural member; the first annular structure is a rigid structure, and the second annular structure is a flexible structure;

[0007] a guide shaft pin, the guide shaft pin being disposed in the second through hole, one end of the guide shaft pin being clamped in the inner side surface of the second annular structure, and the other end of the guide shaft pin being connected to the structural member;

[0008] a flexible PCB board, the flexible PCB board being attached to the outer surface of the structural member and arranged opposite to the second annular structure, the flexible PCB board being connected to one end of the guide shaft pin;

[0009] The contact is arranged on the flexible PCB board, and the contact is protruded toward the first through hole.

[0010] In some possible embodiments, the optical fiber locking head further includes an elastic member, which is sleeved on the outside of the guide shaft pin, and the elastic member is respectively connected to the second annular structure and the flexible PCB board, and the elastic member can be extended and retracted along the direction of the guide shaft pin.

[0011] In some possible embodiments, there are multiple guide pins, and there are multiple elastic members, and the multiple elastic members are respectively sleeved on the outside of the multiple guide pins.

[0012] In some possible embodiments, the number of the plurality of guide pins is the same as the number of the plurality of elastic members.

[0013] In some possible embodiments, the elastic member is a spring.

[0014] In some possible embodiments, there are multiple contacts, and the multiple contact arrays are distributed on the flexible PCB board.

[0015] In some possible embodiments, the contact is made of metal material.

[0016] In some possible embodiments, the contacts are made of copper.

[0017] In some possible embodiments, a groove is further formed on the structural member at a position corresponding to the contact point, and an opening of the groove faces the first through hole.

[0018] In some possible embodiments, the fiber locking head further includes a base, and the structural member is installed above the base.

[0019] The present invention provides a fiber optic locking head comprising: a first annular structure and a second annular structure, the first annular structure and the second annular structure being connected in an annular manner around a pre-set structural member to form an annular mounting ring; a first through-hole extending through the structural member at the center of the structural member, and a second through-hole formed between the second annular structure and the structural member; a rigid structure and a flexible structure; a guide pin disposed in the second through-hole, one end of the guide pin being retained within the inner side of the second annular structure, the other end of the guide pin being connected to the structural member; a flexible printed circuit board (PCB) attached to the outer side of the structural member and disposed opposite the second annular structure, the flexible PCB being connected to one end of the guide pin; and contacts disposed on the flexible PCB, the contacts protruding toward the first through-hole. Most of the functional modules in the fiber optic locking head provided by the present invention are flexible, enabling effective locking of optical fibers of different sizes without causing damage to the fiber optic locking head or preventing problems with optical fiber connection. Furthermore, the fiber optic locking head has a simple structure and high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The technical solutions and other beneficial effects of the present invention will be made apparent by describing in detail the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0021] Figure 1 This is a schematic structural diagram of an embodiment of the optical fiber locking head provided by the present utility model;

[0022] Figure 2 It is a front view schematic diagram of the clamping structure of the replaceable lens provided by an embodiment of the present utility model. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be noted that the following examples are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Similarly, the following examples are only partial embodiments of the present invention and are not intended to be exhaustive. All other embodiments derived by persons of ordinary skill in the art without inventive effort are intended to fall within the scope of protection of the present invention.

[0024] In the following description of the present invention, reference is made to “some embodiments”, which describe a subset of all possible embodiments. However, it can be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

[0025] It should be further explained that, in the description of the present invention, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention. In the following description of the present invention, the terms "first, second, and third" are merely used to distinguish similar objects and do not represent a specific order for the objects. It is understandable that "first, second, and third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present invention described herein can be implemented in an order other than that illustrated or described herein.

[0026] Unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection or a detachable 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. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances. Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as those generally understood by technicians in the technical field to which this utility model belongs. The terms used in this document are only for the purpose of describing the embodiments of the utility model and are not intended to limit the utility model.

[0027] The following is a detailed description of the embodiments. It should be noted that the serial numbers of the following embodiments do not limit the preferred order of the embodiments. The utility model provides a new optical fiber locking head. Figure 1 This is a structural diagram of an embodiment of the optical fiber locking head provided by the present utility model. Figure 2 This is an exploded view of the structure of an embodiment of the optical fiber locking head provided by the utility model. Figure 1 and Figure 2 The structure of the optical fiber locking head provided by the utility model is described in detail.

[0028] Please refer to Figure 1 and Figure 2 ,exist Figure 1 and Figure 2 In the embodiment shown, the optical fiber locking head includes the following structure:

[0029] The first annular structure 101 and the second annular structure 102 are connected in an annular manner around a predetermined structural member to form an annular mounting ring 10. A first through-hole is formed in the center of the structural member and penetrates the structural member. A second through-hole is formed between the second annular structure 102 and the structural member. The first annular structure is a rigid structure, while the second annular structure is a flexible structure.

[0030] The guide shaft pin 20 is arranged in the second through hole, and one end of the guide shaft pin is clamped in the inner side surface of the second annular structure, and the other end of the guide shaft pin 20 is connected to the structural member.

[0031] The flexible PCB board 30 is attached to the outer surface of the structural member and is arranged opposite to the second annular structure 102 . The flexible PCB board 30 is connected to one end of the guide shaft pin 20 .

[0032] The contact 40 is disposed on the PCB board and protrudes toward the first through hole.

[0033] The fiber locking head provided by this utility model has a rigid and flexible portion. When a fiber is inserted into a mounting ring, the flexible portion of the ring deforms to facilitate insertion, preventing the fiber from being unable to be inserted. Furthermore, when the fiber needs to be locked later, the flexible portion of the ring can also deform to securely contact the fiber.

[0034] Specifically, in Figure 1 In the illustrated embodiment, the structural member comprises a structure having a first through-hole at its center. A rigid first annular structure and a flexible second annular structure are sequentially connected end-to-end around the structural member to form an annular mounting ring. The annular mounting ring is formed on the outside of the structural member. An optical fiber can be inserted into the first through-hole to contact the mounting ring and secure the optical fiber.

[0035] exist Figure 1 Figure 2 In the illustrated embodiment, the fiber optic locking head further includes an elastic member 50, which is also located in the second through-hole and sleeved around the guide pin 20. The two ends of the elastic member 50 abut against the second annular structure 102 and the flexible PCB 30, respectively. The elastic member 50 can extend and retract along the direction of the guide pin 20. The guide pin 20 in the present invention also serves as a position limiter, preventing the elastic member 50 from misaligning during extension and retraction, potentially affecting the connection between the optical fiber and the fiber optic locking head. In the present invention, a stepped groove is formed on the side of the second annular structure 102 facing the second through-hole, and the groove gradually increases in width as it faces the first through-hole. One end of the guide pin 20 is retained in the stepped groove, while the elastic member 50 sleeves around the guide pin 20 and is blocked by the stepped groove, thereby maintaining the elastic member 50 in a compressed state.

[0036] In some embodiments, there may be multiple elastic members 50 and multiple guide pins 20, and the number of the multiple elastic members 50 is the same as the number of the multiple guide pins 20. The multiple elastic members are respectively sleeved on the outside of the multiple guide pins 20. In a specific embodiment, the elastic member 50 may be a spring, which is sleeved on the outside of the guide pin 20 and is in a compressed state.

[0037] In the present invention, the fiber locking head further includes a contact 40, which is disposed on the flexible PCB 30 and has a reverse projection facing the first through-hole. When an optical fiber is inserted into the first through-hole, it first releases contact with the contact 40, then establishes contact with the flexible PCB 30. Because the PCB is flexible, the elastic member has a telescopic effect, and the second annular structure is also flexible, contact with the flexible PCB 30 and the annular mounting ring 10 is ensured via the contact 40, regardless of the size of the inserted optical fiber. The fiber locking head provided by the present invention is compact and, while achieving optical fiber locking, is simple to install and cost-effective.

[0038] In the above embodiment, the contact 40 is made of a metal material, such as copper, to ensure contact and connection with the optical fiber. Furthermore, since the contact is positioned on the flexible PCB 30 and protrudes toward the first through hole, the curved shape of the first through hole makes it difficult for the interface on the optical fiber to contact the contact. Therefore, in the present invention, a groove is formed on the structural member at the location corresponding to the contact, with the opening of the groove also facing one side of the first through hole. The top of the contact can either protrude from the groove or be located within it. The smooth groove formed at the contact location facilitates contact and connection between the interface on the optical fiber and the contact.

[0039] In some embodiments, multiple contacts can be arranged in an array on the flexible PCB 30. The placement of the contacts can be determined based on the actual interface locations on the optical fiber. Specifically, the contact locations are determined based on the interface into which the optical fiber is inserted, so that the structures on the optical fiber connect to the contacts. It should be noted that the contact locations are typically determined during the manufacture of the fiber locking head and cannot be changed during subsequent use. However, multiple contacts can be prepared, so that when the optical fiber is inserted, it does not need to connect to all contacts simultaneously; only some contacts need to be connected to achieve connection to the PCB.

[0040] In one embodiment, when the elastic member 50 is a spring, if a larger optical fiber is inserted into the fiber locking head, it first contacts the contact 40 protruding toward the first through-hole and is squeezed outward. The compression of the optical fiber causes the guide pin 20 to move outward, further compressing the spring. The compressed spring then applies an outward force to the second annular structure 102. Because the flexible PCB 30, spring 50, and second annular structure 102 are all flexible structures, when a larger optical fiber is inserted into the fiber locking head, these flexible structures deform to a certain extent, increasing the size of the first through-hole, allowing the optical fiber to be inserted normally, without the problem of being unable to be inserted due to a rigid structure. If the inserted optical fiber is smaller, such that it cannot contact and connect with the contact 40 when inserted into the fiber locking head, the spring will extend, applying an inward force to the flexible PCB 30, pushing the flexible PCB 30 and the contact 40 disposed thereon toward the optical fiber, allowing the optical fiber to contact and connect with the contact 40.

[0041] The optical fiber locking head provided by the present invention also includes a base, and the structural components in the aforementioned embodiments are installed above the base; and the mounting ring 10, guide shaft pin 20, flexible PCB board 30 and other structures are also arranged above the base.

[0042] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A fiber locking head, characterized in that: The optical fiber locking head comprises: a first annular structure and a second annular structure, wherein the first annular structure and the second annular structure are connected in an annular manner around a preset structural member to form an annular mounting ring; a first through hole is formed in the center of the structural member and passes through the structural member; a second through hole is formed between the second annular structure and the structural member; the first annular structure is a rigid structure, and the second annular structure is a flexible structure; a guide shaft pin, the guide shaft pin being disposed in the second through hole, one end of the guide shaft pin being clamped in the inner side surface of the second annular structure, and the other end of the guide shaft pin being connected to the structural member; a flexible PCB board, the flexible PCB board being attached to the outer surface of the structural member and arranged opposite to the second annular structure, the flexible PCB board being connected to one end of the guide shaft pin; The contact is arranged on the flexible PCB board, and the contact is protruded toward the first through hole.

2. The optical fiber locking head according to claim 1, characterized in that: The optical fiber locking head further includes an elastic member, which is sleeved on the outside of the guide shaft pin. The elastic member is respectively connected to the second annular structure and the flexible PCB board, and the elastic member can be extended and retracted along the direction of the guide shaft pin.

3. The optical fiber locking head according to claim 2, characterized in that: There are multiple guide shaft pins and multiple elastic members, and the multiple elastic members are respectively sleeved on the outside of the multiple guide shaft pins.

4. The optical fiber locking head according to claim 3, characterized in that: The number of the plurality of guide shaft pins is the same as the number of the plurality of elastic members.

5. The optical fiber locking head according to claim 2, characterized in that: The elastic member is a spring.

6. The optical fiber locking head according to claim 1, characterized in that: There are multiple contacts, and the multiple contact arrays are distributed on the flexible PCB board.

7. The optical fiber locking head according to claim 1, characterized in that: The contacts are made of metal material.

8. The optical fiber locking head according to claim 1, characterized in that: The contacts are made of copper.

9. The optical fiber locking head according to claim 1, wherein: A groove is further formed on the structural member at a position corresponding to the contact point, and an opening of the groove faces the first through hole.

10. The optical fiber locking head according to claim 1, wherein: The optical fiber locking head further includes a base, and the structural component is installed above the base.

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