Anti-loose FC optical fiber connector
By designing anti-loosening sleeves and elastic parts in FC fiber connectors, combined with anti-loosening teeth on the connecting nuts, the anti-loosening function of the connector is realized in vibration and impact environments, and easy to separate when needed, solving the existing solution The problem of unreliable connection and difficult maintenance in technology.
Patent Information
- Application Number
- CN202421331688.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-06-12
Smart Images
Figure CN222439713U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aviation connectors, in particular to an anti-loosening FC optical fiber connector. Background Art
[0002] At present, with the gradual promotion and application of fiber-optic communication technology, and the increasing amount of data transmitted and processed by aviation, aerospace, ships and other equipment, the requirements for confidentiality and anti-interference capabilities are constantly increasing, prompting fiber-optic transmission to gradually replace cable transmission. Fiber-optic connectors have become one of the most widely used passive optical devices in the field of fiber-optic communications.
[0003] As a standard fiber optic connector, FC has been widely used in many fields. Due to the diversity of application scenarios, when it comes to occasions with high requirements for mechanical environments such as vibration and impact, it is unreliable to rely solely on the connecting nut to lock the head seat. The connecting nut will loosen, resulting in unreliable connection.
[0004] In the prior art, in order to achieve the anti-loosening function, glue is often applied to the threaded connection. Although this method achieves the anti-loosening function, it makes it extremely difficult to separate the plug and the socket, which is not convenient for subsequent maintenance operations. Utility Model Content
[0005] In order to solve the disadvantages of the existing anti-loosening method of FC optical fiber connector and inconvenient separation, the utility model provides an anti-loosening FC optical fiber connector, which is easy to separate and convenient for subsequent maintenance.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] An anti-loosening FC optical fiber connector comprises: a plug body, a connecting nut, an anti-loosening sleeve and an elastic member; the plug body is used for plugging with a socket, the connecting nut sleeve is arranged on the plug body and is rotatably connected with the plug body, one end of the connecting nut can be threadedly connected with the socket to prevent the plug body from being disengaged from the socket, and the other end of the connecting nut is circumferentially provided with a first anti-loosening tooth; the anti-loosening sleeve is arranged on the plug body and can slide axially along the plug body, and the end of the anti-loosening sleeve is circumferentially provided with a second anti-loosening tooth facing the first anti-loosening tooth; the elastic member is installed between the plug body and the anti-loosening sleeve, and the elastic member applies a force to the anti-loosening sleeve toward the connecting nut;
[0008] The connector includes an anti-loosening state and an unlocking state. When the connector is in the anti-loosening state, the second anti-loosening tooth engages with the first anti-loosening tooth, and the anti-loosening sleeve prevents the connecting nut from rotating; the anti-loosening sleeve is slid axially along the plug body, the first anti-loosening tooth and the second anti-loosening tooth are separated, and the connector switches to the unlocking state.
[0009] Through the above arrangement, first, the spring drives the anti-loosening sleeve to engage the first anti-loosening tooth and the second anti-loosening tooth, and the connector has an anti-loosening function; second, the anti-loosening sleeve is slid, and the connector can be switched to an unlocked state, which is convenient for rotating the connecting nut to separate the plug body from the socket, thereby facilitating subsequent maintenance.
[0010] Furthermore, the plug body includes: a front shell, a contact piece, and a rear shell; the connecting nut is rotatably connected to the front shell, one end of the contact piece is installed in the front shell, and the other end of the contact piece extends out of the front shell so as to be plugged into the socket; the rear shell is installed at one end of the front shell away from the contact piece, the anti-loosening sleeve is arranged on the rear shell, and the elastic piece is installed between the rear shell and the anti-loosening sleeve.
[0011] Furthermore, one end of the front shell body away from the contact piece extends into the anti-loosening sleeve and is provided with a guide groove, the extension direction of the guide groove is parallel to the axis of the front shell body, and a guide key adapted to the guide groove is provided on the inner wall of the anti-loosening sleeve. When the connector is in the anti-loosening state, the guide key is arranged in the guide groove.
[0012] Through the above arrangement, the guide key and the guide groove limit the sliding direction of the anti-loosening sleeve and prevent the anti-loosening sleeve from rotating.
[0013] Furthermore, the guide groove extends to the end of the front shell away from the contact piece so that the guide key can leave the guide groove. After the guide key leaves the guide groove, the anti-loosening sleeve can rotate around the axis of the plug body. A card slot is also provided at the end of the front shell away from the contact piece. The card slot is located on one side of the guide groove, and the guide key can be embedded in the card slot to keep the connector unlocked.
[0014] Through the above arrangement, the guide key is inserted into the slot, so that the connector is maintained in an unlocked state, making it convenient for the operator to manually rotate the connecting nut to separate the plug body and the socket.
[0015] Furthermore, one end of the rear shell is threadedly connected to the front shell, and the other end of the rear shell is circumferentially provided with a first annular protrusion, the inner wall of the anti-loosening sleeve is slidably connected to the outer side of the first annular protrusion, and the anti-loosening sleeve is provided with a second annular protrusion along the inner circumference, and the second annular protrusion is slidably connected to the outer wall of the front shell, the guide key is provided on the inner side of the second annular protrusion, and the elastic member is provided as a spring, which is installed between the first annular protrusion and the second annular protrusion.
[0016] Through the above arrangement, the first annular protrusion supports one end of the spring and the inner side of the anti-loosening sleeve, and the second annular protrusion supports the other end of the spring and the outer wall of the front shell. On the one hand, the two ends of the spring are supported, and on the other hand, the anti-loosening sleeve can slide stably and is not easy to shake.
[0017] Furthermore, an annular cavity is formed between the first annular protrusion, the anti-loosening sleeve, the second annular protrusion, the rear shell and the front shell, and the spring is sleeved on the plug body and spirally extends in the annular cavity.
[0018] Through the above arrangement, the connector structure is more compact and the spring expansion and contraction is more stable.
[0019] Furthermore, the first anti-loosening tooth and the second anti-loosening tooth are both wavy in shape. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A schematic diagram of a connector according to an embodiment.
[0021] Figure 2 2 is a cross-sectional view of a connector according to an embodiment.
[0022] Figure 3 Schematic diagram of a connecting nut according to an embodiment.
[0023] Figure 4 Schematic diagram of the front shell of the embodiment.
[0024] Figure 5 Schematic diagram of the rear housing of the embodiment.
[0025] Figure 6 Schematic diagram of the anti-loosening sleeve of the embodiment. DETAILED DESCRIPTION
[0026] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.
[0027] See also Figures 1 to 6 , an anti-loosening FC optical fiber connector, comprising: a plug body 3, a connecting nut 4, an anti-loosening sleeve 5 and an elastic member 6; the plug body 3 is used for plugging with a socket (not shown in the figure), the connecting nut 4 is sleeved on the plug body 3 and rotatably connected with the plug body 3, one end of the connecting nut 4 can be threadedly connected with the socket to prevent the plug body 3 from being disengaged from the socket, and the other end of the connecting nut 4 is circumferentially provided with a first anti-loosening tooth 41; the anti-loosening sleeve 5 is sleeved on the plug body 3 and can slide axially along the plug body 3, and the end of the anti-loosening sleeve 5 is circumferentially provided with a second anti-loosening tooth 51 facing the first anti-loosening tooth 41; the elastic member 6 is installed between the plug body 3 and the anti-loosening sleeve 5, and the elastic member 6 applies a force to the anti-loosening sleeve 5 toward the connecting nut 4;
[0028] The connector includes an anti-loosening state and an unlocking state. When the connector is in the anti-loosening state, the second anti-loosening teeth 51 engage with the first anti-loosening teeth 41, and the anti-loosening sleeve 5 prevents the connecting nut 4 from rotating; the anti-loosening sleeve 5 is axially slid along the plug body 3, the first anti-loosening teeth 41 and the second anti-loosening teeth 51 are separated, and the connector switches to the unlocking state.
[0029] Through the above arrangement, first, the spring drives the anti-loosening sleeve 5 to engage the first anti-loosening teeth 41 and the second anti-loosening teeth 51, and the connector has an anti-loosening function; second, the anti-loosening sleeve 5 is slid, and the connector can be switched to an unlocked state, which is convenient for rotating the connecting nut 4 to separate the plug body 3 from the socket, thereby facilitating subsequent maintenance.
[0030] In the present application, the socket, the plug body 3 and the connecting nut 4 can refer to the existing connector. The connecting nut 4 is coaxially rotatably connected to the outside of the plug body 3, and the connecting nut 4 is axially fixed on the plug body 3. When the connector is in use, the plug body 3 is plugged into the socket, and the connecting nut 4 is tightened on the socket to prevent the plug body 3 from loosening from the socket; in this implementation, the anti-loosening sleeve 5 can only slide along the axial direction of the plug body 3, and the anti-loosening sleeve 5 cannot rotate around the axis of the plug body 3. When the connector is in the anti-loosening state, the elastic member 6 presses the anti-loosening sleeve 5 onto the connecting nut 4, and the first anti-loosening teeth 41 are tightly attached to the second anti-loosening teeth 51. The first and second anti-loosening teeth 41 and 51 are tightly meshed together, and the anti-loosening sleeve 5 prevents the connecting nut 4 from loosening by means of the first anti-loosening teeth 41 and the second anti-loosening teeth 51; wherein, the shape of the first anti-loosening teeth 41 is wavy, sawtooth, ratchet, or other forms, which can be adopted according to actual needs; when the first and second anti-loosening teeth 41 and 51 are meshed, the first and second anti-loosening teeth 41 and 51 are fitted together; when unlocking is required, the anti-loosening sleeve 5 is manually pushed, and the anti-loosening sleeve 5 moves away from the connecting nut 4 along the plug body 3, and the first and second anti-loosening teeth 41 and 51 are disengaged. At this time, the connecting nut 4 can be loosened to separate the plug body 3 from the socket.
[0031] As an implementation method, the plug body 3 includes: a front shell 31, a contact piece 32, and a rear shell 33; the connecting nut 4 is rotatably connected to the front shell 31, one end of the contact piece 32 is installed in the front shell 31, and the other end of the contact piece 32 extends out of the front shell 31 so as to be plugged into the socket; the rear shell 33 is installed at one end of the front shell 31 away from the contact piece 32, the anti-loosening sleeve 5 is set on the rear shell 33, and the elastic piece 6 is installed between the rear shell 33 and the anti-loosening sleeve 5.
[0032] As an implementation method, one end of the front shell 31 away from the contact piece 32 extends into the anti-loosening sleeve 5 and is provided with a guide groove 311. The extension direction of the guide groove 311 is parallel to the axis of the front shell 31. A guide key 52 adapted to the guide groove 311 is provided on the inner wall of the anti-loosening sleeve 5. When the connector is in the anti-loosening state, the guide key 52 is set in the guide groove 311.
[0033] Through the above arrangement, the guide key 52 and the guide groove 311 limit the sliding direction of the anti-loosening sleeve 5 and prevent the anti-loosening sleeve 5 from rotating.
[0034] In the present application, the front shell 31, the rear shell 33 and the contact member 32 are all coaxially arranged; the width of the guide key 52 is consistent with the width of the guide groove 311. When the guide key 52 is arranged in the guide groove 311, the anti-loosening sleeve 5 can only slide along the guide groove 311 and cannot rotate around the axis of the rear shell 33.
[0035] As an implementation method, the guide groove 311 penetrates to the end of the front shell 31 away from the contact piece 32 so that the guide key 52 leaves the guide groove 311. After the guide key 52 leaves the guide groove 311, the anti-loosening sleeve 5 can rotate around the axis of the plug body 3. A card slot 312 is also provided at the end of the front shell 31 away from the contact piece 32. The card slot 312 is located on one side of the guide groove 311. The guide key 52 can be embedded in the card slot 312 to keep the connector unlocked.
[0036] Through the above arrangement, the guide key 52 is inserted into the slot 312 to keep the connector in an unlocked state, making it convenient for the operator to manually rotate the connecting nut 4 to separate the plug body 3 and the socket.
[0037] In the present application, the depth of the guide groove 311 is greater than the depth of the card slot 312. Specifically, when the connector is in an anti-loosening state, the guide key 52 does not contact the bottom of the guide groove 311, so that the elastic member 6 can stably press the anti-loosening sleeve 5 onto the connecting nut 4; when unlocking the connector, first push the anti-loosening sleeve 5 backward to separate the guide key 52 from the guide groove 311, and then rotate the anti-loosening sleeve 5 around the axis of the rear shell 33 so that the guide key 52 of the anti-loosening sleeve 5 corresponds to the position of the card slot 312. After releasing the hand, the elastic member 6 drives the anti-loosening sleeve 5 to move toward the connecting nut 4, and the guide key 52 is embedded in the card slot 312 and contacts the bottom of the card slot 312. The connector is in an unlocked state, and the first anti-loosening tooth 41 and the second anti-loosening tooth 51 are completely disengaged, that is, when the connecting nut 4 is rotated, the first anti-loosening tooth 41 and the second anti-loosening tooth 51 will not interfere with each other. In addition, a limiting boss is formed between the card slot 312 and the guide slot 311. When the guide key 52 is embedded in the card slot 312, the limiting boss prevents the anti-loosening sleeve 5 from rotating, so that the connector is stably maintained in the unlocked state; the above steps can be reversed to switch the connector back to the anti-loosening state.
[0038] As an implementation method, one end of the rear shell body 33 is threadedly connected to the front shell body 31, and the other end of the rear shell body 33 is circumferentially provided with a first annular protrusion 331, the inner wall of the anti-loosening sleeve 5 is slidingly connected to the outer side of the first annular protrusion 331, and the anti-loosening sleeve 5 is provided with a second annular protrusion 53 along the inner circumference, and the second annular protrusion 53 is slidingly connected to the outer wall of the front shell body 31, the guide key 52 is arranged on the inner side of the second annular protrusion 53, and the elastic member 6 is arranged as a spring, and the spring is installed between the first annular protrusion 331 and the second annular protrusion 53.
[0039] Through the above arrangement, the first annular protrusion 331 supports one end of the spring and the inner side of the anti-loosening sleeve 5, and the second annular protrusion 53 supports the other end of the spring and the outer wall of the front shell 31. On the one hand, the two ends of the spring are supported, and on the other hand, the anti-loosening sleeve 5 can slide stably and is not easy to shake.
[0040] In the present application, the first annular protrusion 331 is integrally formed with the rear housing 33 , and the anti-loosening sleeve 5 , the second annular protrusion 53 and the guide key 52 are integrally formed.
[0041] As an implementation method, an annular cavity is formed among the first annular protrusion 331 , the anti-loosening sleeve 5 , the second annular protrusion 53 , the rear shell 33 and the front shell 31 , and the spring is sleeved on the plug body 3 and spirally extends in the annular cavity.
[0042] Through the above arrangement, the connector structure is more compact and the spring expansion and contraction is more stable.
[0043] As an implementation manner, the first anti-loosening teeth 41 and the second anti-loosening teeth 51 are both wavy in shape.
[0044] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.
Claims
1. An anti-loosening FC optical fiber connector, characterized in that: include: A plug body and a connecting nut, wherein the plug body is used to be plugged into a socket, the connecting nut sleeve is arranged on the plug body and is rotatably connected to the plug body, one end of the connecting nut can be threadedly connected to the socket to prevent the plug body from being disengaged from the socket, and the other end of the connecting nut is circumferentially provided with a first anti-loosening tooth; An anti-loosening sleeve, the anti-loosening sleeve is arranged on the plug body and can slide axially along the plug body, and the end of the anti-loosening sleeve is circumferentially provided with a second anti-loosening tooth facing the first anti-loosening tooth; An elastic member, the elastic member is installed between the plug body and the anti-loosening sleeve, and the elastic member applies a force to the anti-loosening sleeve toward the connecting nut; The connector includes an anti-loosening state and an unlocking state. When the connector is in the anti-loosening state, the second anti-loosening tooth is engaged with the first anti-loosening tooth, and the anti-loosening sleeve prevents the connecting nut from rotating; the anti-loosening sleeve is axially slid along the plug body, the first anti-loosening tooth and the second anti-loosening tooth are separated, and the connector is switched to the unlocking state.
2. The anti-loosening FC optical fiber connector according to claim 1, characterized in that: The plug body comprises: A front housing and a contact piece, wherein the connecting nut is rotatably connected to the front housing, one end of the contact piece is installed in the front housing, and the other end of the contact piece extends out of the front housing so as to be plugged into a socket; The rear housing is installed at one end of the front housing away from the contact piece, the anti-loosening sleeve is arranged on the rear housing, and the elastic piece is installed between the rear housing and the anti-loosening sleeve.
3. The anti-loosening FC optical fiber connector according to claim 2, characterized in that: One end of the front shell body away from the contact piece extends into the anti-loosening sleeve and is provided with a guide groove, the extension direction of the guide groove is parallel to the axis of the front shell body, and a guide key adapted to the guide groove is provided on the inner wall of the anti-loosening sleeve, and when the connector is in the anti-loosening state, the guide key is arranged in the guide groove.
4. The anti-loosening FC optical fiber connector according to claim 3, characterized in that: The guide groove penetrates to the end of the front shell away from the contact piece so that the guide key can leave the guide groove. After the guide key leaves the guide groove, the anti-loosening sleeve can rotate around the axis of the plug body. A card slot is also provided at the end of the front shell away from the contact piece. The card slot is located on one side of the guide groove. The guide key can be embedded in the card slot to keep the connector in the unlocked state.
5. The anti-loosening FC optical fiber connector according to claim 4, characterized in that: One end of the rear shell is threadedly connected to the front shell, and the other end of the rear shell is circumferentially provided with a first annular protrusion, the inner wall of the anti-loosening sleeve is slidably connected to the outer side of the first annular protrusion, and the anti-loosening sleeve is provided with a second annular protrusion along the inner circumference, and the second annular protrusion is slidably connected to the outer wall of the front shell, the guide key is arranged on the inner side of the second annular protrusion, and the elastic member is arranged as a spring, and the spring is installed between the first annular protrusion and the second annular protrusion.
6. The anti-loosening FC optical fiber connector according to claim 5, characterized in that: An annular cavity is formed between the first annular protrusion, the anti-loosening sleeve, the second annular protrusion, the rear shell and the front shell. The spring is sleeved on the plug body and spirally extends in the annular cavity.
7. The anti-loosening FC optical fiber connector according to claim 1, characterized in that: The first anti-loosening teeth and the second anti-loosening teeth are both wavy in shape.