Optical fiber connector, connector assembly and automobile

Abstract

The invention discloses an optical fiber connector, a connector assembly and an automobile, one end, far away from an optical module terminal, of a clamping arm of the optical fiber connector is provided with an overhanging part in an extending manner, and the overhanging part is partially embedded into an accommodating groove of a position maintaining part when the position maintaining part is in a pre-assembling position; and in the process that the position retaining piece slides from the preassembling position to the locking position, the overhanging part slides in the accommodating groove relative to the position retaining piece in the direction of the groove bottom, so that in the process that the position retaining piece slides on the optical fiber connector, the whole-course auxiliary positioning of the clamping arm can be realized through the matching of the accommodating groove and the overhanging part, and the positioning precision of the optical fiber connector is improved. In addition, the matching structure can achieve the purpose of protecting the clamping arm structure and preventing the clamping arm structure from being damaged in the sliding process of the position maintaining piece, the position maintaining piece is particularly suitable for small connectors with position maintaining structures such as optical fiber connectors, and then vehicle end application of the optical fiber connectors can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to an optical fiber connector, a connector assembly and a car. Background Art

[0002] In the development of automobile intelligence, the application of automobile bus based on copper cable has been limited. Copper cable has bottlenecks in weight, cost and bandwidth rate, and is susceptible to electromagnetic interference. In comparison, optical fiber has outstanding advantages in high rate, light weight, weather resistance, low cost and electromagnetic interference. For example, the telecommunications industry has adopted the trend of "optical fiber replacing copper cable", and the installation of optical fiber cables in vehicles has become an inevitable trend.

[0003] Existing fiber optic connectors have obvious defects when used in automobiles, such as heavy weight, poor sealing performance, large size, low tensile strength, and complex operation. Therefore, it is urgent to design a fiber optic connector suitable for the vehicle end. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a fiber optic connector, a connector assembly and a car to solve the technical problems mentioned in the background technology.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a fiber optic connector, used to be inserted into the plug-in cavity of an optical module terminal, a clamping arm is provided on one of the side walls of the fiber optic connector, and the clamping arm is at least partially engaged with the inner wall of the plug-in cavity, and a position retaining member partially located below the clamping arm is slidably provided on the fiber optic connector, and the position retaining member has a pre-installed position and a locked position during the sliding process, and the position retaining member has a receiving groove at one end facing the clamping arm, and an overhang portion is extended from one end of the clamping arm away from the optical module terminal, and the overhang portion is partially embedded in the receiving groove when the position retaining member is in the pre-installed position, and in the process of the position retaining member sliding from the pre-installed position to the locked position, the overhang portion slides in the receiving groove toward the bottom of the groove relative to the position retaining member.

[0006] In some embodiments, a card slot is provided in the insertion cavity, and a card protrusion is protruded from the card arm to be card-engaged with the card slot.

[0007] In some embodiments, sliding parts are provided on both sides of the overhanging part in the sliding direction, and the position retaining member is provided with a sliding groove in the receiving groove that slidably cooperates with the sliding part.

[0008] In some embodiments, a pin hole is formed at one end of the overhanging portion away from the clamping arm, a pin shaft is disposed in the pin hole, and two ends of the pin shaft respectively extend to the outside of the pin hole to form the sliding portion.

[0009] In some embodiments, the pin shaft is embedded in the pin hole by injection molding.

[0010] In some embodiments, a glue injection port connected to the pin hole is formed at one end of the overhanging portion away from the clamping arm, and the pin shaft and the pin hole are connected by glue injection through the glue injection port.

[0011] In some embodiments, the pin is made of metal material.

[0012] In some embodiments, a stop block is provided on the inner side of the top of the slide groove, and a side of the stop block close to the clamping arm and the slide groove form a pre-installed positioning hole for clamping the sliding part. When the position retaining member is in the pre-installed position, the sliding part is clamped in the pre-installed positioning hole to realize the positioning of the position retaining member in the pre-installed position.

[0013] In some embodiments, during the process of inserting the optical fiber connector into the plug-in cavity of the optical module terminal, the inner wall of the plug-in cavity presses the snap-in protrusion so that the snap-in arm drives the sliding part to disengage from the pre-installed positioning hole, and after the optical fiber connector is inserted into the plug-in cavity of the optical module terminal, the sliding part passes over the snap-in protrusion and enters the other side of the slide groove.

[0014] In some embodiments, a support platform is formed on one end of the position retaining member facing the clamping arm. When the position retaining member is in the locked position, the support platform is supported under the clamping arm to prevent the clamping arm from being unexpectedly pressed down.

[0015] In some embodiments, the support platform is a protrusion relatively arranged on the side wall of the receiving groove, and the free end of the clamping arm has shoulders protruding from the sides of the overhanging part. When the position retaining member is in the locking position, the shoulders are located above the protrusion and prevent the free end of the clamping arm from being pressed down.

[0016] In some embodiments, a locking protrusion and a locking groove that cooperate with each other are provided between the position retaining member and the optical fiber connector. When the sliding portion passes over the snap-fitting protrusion and enters the other side of the slide groove, the position retaining member continues to be pushed, so that the locking protrusion and the locking groove can be snap-fitted to achieve the positioning of the position retaining member in the locked position.

[0017] In some embodiments, the optical fiber connector includes a front housing, a rear housing, and an optical fiber terminal assembly. The front housing and the rear housing are snap-fitted and the optical fiber terminal assembly is installed inside both.

[0018] In some embodiments, a slider is integrally provided at the bottom of the position retaining member, and a sleeve hole is provided in the slider along the sliding direction of the position retaining member. The slider is sleeved on the outside of the optical fiber connector through the sleeve hole and can slide relative to the optical fiber connector.

[0019] In some embodiments, a hole for inserting the insertion rod is formed at one end of the position retaining member away from the clamping arm to facilitate assembly of the optical fiber connector.

[0020] In some embodiments, the end of the rod facing the socket is extended to form two oppositely disposed snap-in blocks, the snap-in blocks are snap-fitted with the socket, and a collapse groove is provided between the two snap-in blocks at the end of the rod facing the socket.

[0021] A connector assembly of the present invention is characterized by comprising an optical module terminal having at least one plug-in cavity and the optical fiber connector, wherein the optical fiber connector is detachably arranged in the plug-in cavity of the optical module terminal.

[0022] In some embodiments, a card slot is provided in the insertion cavity, and a card protrusion is protruded from the card arm to be card-engaged with the card slot.

[0023] A car of the present invention comprises the connector assembly.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: the optical fiber connector of the present invention is provided with an overhang portion extending from one end of the clamping arm away from the optical module terminal, and the overhang portion is partially embedded in the receiving groove of the position retaining member when the position retaining member is in the pre-installed position, and in the process of the position retaining member sliding from the pre-installed position to the locked position, the overhang portion slides relative to the position retaining member in the receiving groove toward the bottom of the groove, so that in the process of the position retaining member sliding on the optical fiber connector, the clamping arm can be fully assisted in positioning through the cooperation of the receiving groove and the overhang portion, ensuring that it can accurately slide to the predetermined position. In addition, the above-mentioned cooperation structure can also protect the clamping arm structure to prevent it from being damaged during the sliding of the position retaining member, and is particularly suitable for small connectors with a position retaining structure such as optical fiber connectors, thereby realizing vehicle-end application of optical fiber connectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0026] Figure 1 A schematic diagram of the structure of the optical fiber connector provided by the present invention;

[0027] Figure 2 for Figure 1 An exploded schematic diagram of the optical fiber connector shown;

[0028] Figure 3 for Figure 1 A schematic structural diagram of a front housing in the optical fiber connector shown;

[0029] Figure 4 for Figure 1 A schematic diagram of the structure of a position retaining member in the optical fiber connector shown;

[0030] Figure 5 and Figure 6 When the position retainer is in the pre-installed position and the locked position, Figure 1 A front view of the optical fiber connector shown;

[0031] Figure 7-Figure 10 A schematic diagram of the connector assembly in different states during the process of inserting the optical fiber connector into the optical module terminal;

[0032] Fig.11 It is a sealing schematic diagram of the optical cable and the sealing rubber sleeve;

[0033] Fig.12 It is a schematic diagram of the cooperation between the optical fiber connector and the plug rod;

[0034] Fig.13 It is a schematic diagram of the structure of the plug rod.

[0035] The following are marked in the figure:

[0036] 1. Optical fiber connector; 2. Optical module terminal; 3. Plug-in cavity; 4. Card slot;

[0037] 10. Clamping arm; 101. Clamping protrusion; 102. Shoulder;

[0038] 20, position retaining member; 201, receiving groove; 202, slide groove; 203, stopper; 204, pre-installed positioning hole; 205, support platform; 206, locking groove; 207, slider; 208, sleeve hole; 209, plug hole; 210, the other side of the slide groove; 211, blocking platform; 212, protrusion;

[0039] 30, overhanging part; 301, sliding part; 302, pin hole; 303, pin shaft; 304, glue injection port;

[0040] 40, front housing; 401, locking protrusion; 402, dust cap;

[0041] 50, rear housing; 501, sealing ring; 502, metal lining; 503, crimping ring; 504, sealing rubber sleeve; 505, annular rib; 506, optical cable;

[0042] 60. Optical fiber terminal assembly;

[0043] 70. Sliding direction of the position retaining member;

[0044] 80. Insertion rod; 801. Snap-in block; 802. Collapse groove. DETAILED DESCRIPTION

[0045] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0046] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0047] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0048] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0049] like Figure 1-Figure 5 As shown, an optical fiber connector 1 is used to be inserted into the plug-in cavity 3 of the optical module terminal 2. A clamping arm 10 is provided on one of the side walls of the optical fiber connector 1. The clamping arm 10 is clamped and matched with the plug-in cavity 3. Specifically, a clamping slot 4 is provided in the plug-in cavity 3. A clamping protrusion 101 is protruded on the clamping arm 10 and is clamped and matched with the clamping slot 4. After the optical fiber connector 1 is installed in the plug-in cavity 3 of the optical module terminal 2, the clamping protrusion 101 is clamped into the clamping slot 4 to achieve a stable connection between the two. For details, please refer to Fig.10 .

[0050] like Figure 1-Figure 5 As shown, the optical fiber connector 1 is slidably provided with a position retaining member 20 partially located below the clamping arm 10, and the position retaining member 20 has a pre-installed position and a locked position during the sliding process. This is a relatively conventional technical means in the art. The main improvement of the present invention is: Figure 3 and Figure 4 As shown, the end of the position retaining member 20 facing the clamping arm 10 has a receiving groove 201, and the end of the clamping arm 10 away from the optical module terminal 2 is extended with an overhanging portion 30. When the position retaining member 20 is in the pre-installed position, the overhanging portion 30 is partially embedded in the receiving groove 201, and when the position retaining member 20 slides from the pre-installed position to the locked position, the overhanging portion 30 slides relative to the position retaining member 20 in the receiving groove 201 toward the direction of the groove bottom. For details, please refer to Figure 5 and Figure 6As shown, after the position retaining member 20 is installed in the optical fiber connector 1, it will generally only switch between the pre-installed position and the locked position. Therefore, during the sliding process of the position retaining member 20 on the optical fiber connector 1, the cooperation of the receiving groove 201 and the overhang portion 30 can achieve full auxiliary positioning of the clamping arm 10 to ensure that it can accurately slide to the predetermined position. In addition, with the above-mentioned cooperation structure, the receiving groove 201 is always maintained on both sides of the sliding direction of the overhang portion 30, which can protect the structure of the clamping arm 10 and prevent it from being damaged during the sliding process of the position retaining member 20. It is particularly suitable for small connectors with a position retaining structure such as optical fiber connectors, thereby realizing the vehicle-end application of optical fiber connectors.

[0051] In one embodiment, if Figure 3-Figure 6 As shown, sliding parts 301 are provided on both sides of the sliding direction of the overhanging part 30, and the position retaining member 20 is provided with a sliding groove 202 that slidably cooperates with the sliding part 301 in the receiving groove 201. After the position retaining member 20 is installed into the optical fiber connector 1, the sliding part 301 enters the sliding groove 202. In the process of switching between the pre-installed position and the locked position, the sliding part 301 cooperates with the sliding groove 202. On the one hand, the auxiliary positioning effect of the clamping arm 10 is better throughout the process. On the other hand, it can prevent the clamping arm 10 from being damaged by unexpected situations such as deviation during the sliding process.

[0052] Furthermore, if Figure 3 As shown, a pin hole 302 is provided at one end of the overhang portion 30 away from the clamping arm 10, and a pin shaft 303 is provided in the pin hole 302. Both ends of the pin shaft 303 extend to the outside of the pin hole 302 respectively to form a sliding portion 301. Specifically, in order to ensure the strength of the sliding portion 301 and prevent it from being damaged during multiple sliding movements, the pin shaft 303 is made of a metal material, and the pin shaft 303 can be directly embedded in the pin hole 302 by injection molding. In this way, when assembling the position retaining member 20, it is necessary to appropriately tilt the clamping arm 10 to guide both ends of the pin shaft 303 into the slide groove 202. Considering the assembly difficulty and processing accuracy requirements, and the risk of tearing of the clamping arm 10 when tilting the clamping arm 10 in this way, it is also possible to choose to open a screw thread at the end of the overhang portion 30 away from the clamping arm 10 to connect with the clamping arm 10. The pin hole 302 is connected to the injection port 304, and the pin shaft 303 and the pin hole 302 are connected by injection of glue at the injection port 304. Compared with embedded injection molding, this setting method has lower requirements for assembly accuracy. Specifically, during assembly, the clamping arm 10 is first pressed down to align the pin hole 302 of the overhang portion 30 with the slide groove 202, and then the pin shaft 303 is passed through the slide groove 202 and inserted into the pin hole 302, and finally glue is injected from the injection port 304 to achieve assembly of the position retaining component. Since there is no need to tilt the clamping arm 10 when pressing down, the risk of tearing of the clamping arm 10 is greatly reduced.

[0053] In one embodiment, if Figure 4 As shown, a stopper 203 is provided on the inner side of the top of the slide groove 202, and the stopper 203 is close to the side of the clamping arm 10 and the slide groove 202 to form a pre-installed positioning hole 204 for clamping the sliding part 301. When the position retaining member 20 is in the pre-installed position, the sliding part 301 is clamped in the pre-installed positioning hole 204 to realize the positioning of the position retaining member 20 in the pre-installed position. For details, please refer to Figure 5 .

[0054] During the insertion of the optical fiber connector 1 into the insertion cavity 3 of the optical module terminal 2, the inner wall of the insertion cavity 3 presses the clamping protrusion 101 so that the clamping arm 10 drives the sliding part 301 to disengage from the pre-installed positioning hole 204. For details, please refer to Figure 7 At this time, the pre-installed position of the position retaining member 20 is unlocked. After the optical fiber connector 1 is inserted into the insertion cavity 3 of the optical module terminal 2, the sliding portion 301 passes over the clamping protrusion 101 and enters the other side 210 of the slide groove. For details, please refer to Fig. 9 .

[0055] A locking protrusion 401 and a locking groove 206 that cooperate with each other are provided between the position retaining member 20 and the optical fiber connector 1. When the sliding portion 301 passes over the engaging protrusion 101 and enters the other side 210 of the slide groove, the position retaining member 20 is continuously pushed, so that the locking protrusion 401 and the locking groove 206 can be engaged with each other to realize the positioning of the position retaining member in the locking position. For details, please refer to Fig.10 Furthermore, the position retaining member 20 is further formed with a support platform 205 at one end facing the clamping arm. When the position retaining member 20 is in the locked position, the support platform 205 is supported below the clamping arm 10. For details, please refer to Figure 6 , to prevent the unexpected downward pressure of the clamping arm 10, so as to achieve the position maintenance between the optical fiber connector 1 and the optical module terminal 2; specifically: the support platform 205 is a convex block 212 relatively arranged on the side wall of the receiving groove 201, and the two sides of the free end of the clamping arm 10 have shoulders 102 protruding from the two sides of the overhanging part 30. When the position retaining member 20 is in the locking position, the shoulder 102 is located on the convex block 212 and prevents the free end of the clamping arm 10 from being pressed downward. For details, please refer to Fig.10 .

[0056] Furthermore, if Figure 4 As shown, the position retaining member 20 is formed with a vertical blocking platform 211 on the front side of the supporting platform 205, and the two are vertically arranged. When the pre-installed position of the position retaining member 20 is unlocked, the position retaining member 20 is continuously pushed to make the blocking platform 211 abut against the clamping arm 10. For details, please refer to Figure 8, and then continue to push the position retaining member 20, which can drive the optical fiber connector 1 to be smoothly installed into the plug-in cavity 3 of the optical module terminal 2. At this time, as mentioned above, the sliding part 301 passes over the snap-fit ​​protrusion 101 and enters the other side 210 of the slide groove, and subsequent actions can be continued.

[0057] In addition, if Figure 1 and Figure 3 As shown, considering the strength of the overhang 30, the width of the overhang 30 should be no less than 1 / 3 of the width of the clamping arm 10, and the ratio of the length of the overhang 30 to the length of the clamping arm 10 is generally not greater than 3 / 4. At the same time, in order to prevent the overhang 30 from interfering with the support platform 205 when not necessary, the ratio of the width of the overhang 30 to the width of the clamping arm should be no greater than 2 / 3. At the same time, in order to ensure that the receiving groove 201 can always be maintained on both sides of the overhang 30 during the switching of the position retaining member 20 between the pre-installed position and the locked position, the ratio of the length of the overhang 30 to the length of the clamping arm 10 is generally not less than 1 / 2, and the specific selection should be made according to the sliding stroke of the position retaining member 20 between the pre-installed position and the locked position.

[0058] In one embodiment, if Figure 1 and Figure 2 As shown, the optical fiber connector 1 includes a front shell 40, a rear shell 50 and an optical fiber terminal assembly 60. It should be noted here that the optical fiber terminal assembly 60 is a relatively conventional technical means in the field and is not described in detail here. The front shell 40 and the rear shell 50 are snap-fitted to form a space for installing the optical fiber terminal assembly 60. The optical fiber terminal assembly 60 is installed in the space. The split setting of the optical fiber connector 1 shell facilitates the assembly of the optical fiber connector 1. When the optical fiber connector 1 is not plugged in with the optical module terminal 2, a dust cap 402 can be detachably set on the end of the front shell 40 facing the optical module terminal 2 to achieve the purposes of isolation protection, dust prevention, and anti-oxidation.

[0059] Furthermore, if Figure 2 As shown, in order to improve the sealing performance of the optical fiber connector 1, a sealing ring 501 is provided between the front housing 40 and the rear housing 50, and a corresponding sealing gasket structure can also be provided at the connection between the dust cap 402 and the front housing 40; and Figure 2 and Fig.11As shown, a metal liner 502 with an external thread is injection-molded and embedded in the rear of the rear shell 50. The optical cable 506 passes through the metal liner 502 and is fixed to the optical fiber terminal assembly 60 and conductively connected. The metal liner 502 and the outer side of the optical cable 506 are crimped with a crimping ring 503 with different outer diameters at both ends. In order to ensure the sealing performance at the rear shell, the connection between the crimping ring 503 and the optical cable 506 and the outer side of the crimping ring 503 are jointly sleeved with a sealing rubber sleeve 504. In order to have a better sealing effect, a plurality of annular ribs 505 are respectively arranged on the inner walls of the head end and the tail end of the sealing rubber sleeve 504 along the axial direction. Through the above three-level sealing structure, the optical fiber connector of the present invention can have better sealing performance to meet the high waterproof requirements of the vehicle end.

[0060] In one embodiment, if Figure 1-Figure 4 As shown, a slider 207 is integrally provided at the bottom of the position retaining member 20, and a sleeve hole 208 is provided in the slider 207 along the sliding direction 70 of the position retaining member. The shape of the sleeve hole 208 is adapted to the shape of the optical fiber connector 1. The slider 207 is sleeved on the outside of the optical fiber connector 1 through the sleeve hole 208 and can slide relative to the optical fiber connector 1.

[0061] In one embodiment, if Figure 4 As shown, considering the volume of the optical fiber connector 1, especially the small cross-sectional size which is not convenient for assembly and disassembly, the end of the position retaining member 20 away from the clamping arm 10 is provided with a plug hole 209 for inserting the plug rod 80. When assembling or disassembling the optical fiber connector 1, the plug rod 80 is inserted into the plug hole 209 of the position retaining member 20, so that the optical fiber connector 1 can be conveniently assembled and disassembled. For details, please refer to Fig.12 .

[0062] Furthermore, if Fig.13 As shown, the end of the insertion rod 80 facing the socket 209 extends to form two relatively arranged snap-in blocks 801, and mutually matching protrusion and groove structures are set between the snap-in blocks 801 and the socket 209 to achieve the snap-in fit between the two. At the same time, in order to facilitate the insertion of the insertion rod 80 into the socket 209 of the position retaining member 20, a collapse groove 802 is set between the two snap-in blocks 801 at the end of the insertion rod 80 facing the socket 209. During the process of inserting the insertion rod 80 into the socket 209, the snap-in block 801 is offset inwardly under the guidance of the collapse groove 802 after being subjected to force, and after the snap-in block 801 is snap-fitted with the socket 209, the snap-in block 801 returns to its original state, thereby achieving stable fit between the insertion rod 80 and the position retaining member 20.

[0063] The present invention further provides a connector assembly, such as Figure 7-Figure 10As shown, it includes an optical module terminal 2 with at least one plug-in cavity 3 and an optical fiber connector 1. The optical fiber connector 1 is detachably arranged in the plug-in cavity 3 of the optical module terminal 2. Specifically, a card slot 4 is arranged in the plug-in cavity 3, and a card protrusion 101 that is engaged with the card slot 4 is protruded from the card arm 10. After the optical fiber connector 1 is installed in the plug-in cavity 3 of the optical module terminal 2, the card protrusion 101 is engaged with the card slot 4 to achieve a stable connection between the two.

[0064] The present invention further provides an automobile, comprising the above-mentioned connector assembly and optical fiber connector 1. As described above, the optical fiber connector 1 of the present invention can achieve full-range auxiliary positioning of the clamping arm 10 through the cooperation of the receiving groove 201 and the overhang portion 30, ensuring that it can accurately slide to the predetermined position. At the same time, the above-mentioned cooperation structure, the receiving groove 201 is always maintained on both sides of the sliding direction of the overhang portion 30, which can protect the structure of the clamping arm 10 and prevent it from being damaged during the sliding process of the position retaining member 20; in addition, the setting of the three-level sealing structure of the optical fiber connector 1 has better waterproof performance. Obviously, the connector assembly and automobile provided by the present invention also have the above-mentioned advantages. Therefore, the vehicle-end application of the optical fiber connector can be realized.

[0065] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An optical fiber connector, used for inserting into a plug-in cavity of an optical module terminal, wherein a clamping arm is provided on one of the side walls of the optical fiber connector, wherein the clamping arm is at least partially engaged with the inner wall of the plug-in cavity, and a position retaining member partially located below the clamping arm is slidably provided on the optical fiber connector, and the position retaining member has a pre-installed position and a locked position during the sliding process, characterized in that: The position retaining member has a receiving groove at one end facing the clamping arm, and the clamping arm has an overhanging portion extending from one end away from the optical module terminal. When the position retaining member is in the pre-installed position, the overhanging portion is partially embedded in the receiving groove, and when the position retaining member slides from the pre-installed position to the locked position, the overhanging portion slides in the receiving groove toward the bottom of the groove relative to the position retaining member.

2. The optical fiber connector according to claim 1, characterized in that: A card slot is arranged in the inserting cavity, and a card protrusion which is card-engaged with the card slot is protruded on the card arm.

3. The optical fiber connector according to claim 1, characterized in that: Sliding parts are arranged on both sides of the overhanging part in the sliding direction, and the position retaining member is provided with a sliding groove in the receiving groove which is slidably matched with the sliding part.

4. The optical fiber connector according to claim 3, characterized in that: A pin hole is formed at one end of the overhanging portion away from the clamping arm, a pin shaft is arranged in the pin hole, and two ends of the pin shaft respectively extend to the outside of the pin hole to form the sliding portion.

5. The optical fiber connector according to claim 4, characterized in that: The pin shaft is embedded and injection-molded in the pin hole.

6. The optical fiber connector according to claim 4, characterized in that: An end of the overhanging portion away from the clamping arm is provided with a glue injection port communicated with the pin hole, and the pin shaft and the pin hole are connected by glue injection through the glue injection port.

7. An optical fiber connector according to claim 5 or 6, characterized in that: The pin shaft is made of metal material.

8. The optical fiber connector according to claim 3, characterized in that: A stop block is provided on the inner side of the top of the slide groove, and a side of the stop block close to the clamping arm and the slide groove form a pre-installed positioning hole for clamping the sliding part. When the position retaining member is in the pre-installed position, the sliding part is clamped in the pre-installed positioning hole to realize the positioning of the position retaining member in the pre-installed position.

9. The optical fiber connector according to claim 8, characterized in that: During the process of inserting the optical fiber connector into the plug-in cavity of the optical module terminal, the inner wall of the plug-in cavity presses the clamping protrusion so that the clamping arm drives the sliding part to disengage from the pre-installed positioning hole, and after the optical fiber connector is inserted into the plug-in cavity of the optical module terminal, the sliding part passes over the clamping protrusion and enters the other side of the slide groove.

10. The optical fiber connector according to claim 9, characterized in that: A support platform is also formed on one end of the position retaining member facing the clamping arm. When the position retaining member is in the locking position, the support platform is supported below the clamping arm to prevent the clamping arm from being unexpectedly pressed downward.

11. The optical fiber connector according to claim 10, characterized in that: The support platform is a protrusion relatively arranged on the side wall of the receiving groove, and the free end of the clamping arm has shoulders protruding from the two sides of the overhanging part. When the position retaining member is in the locking position, the shoulders are located on the protrusion and prevent the free end of the clamping arm from being pressed down.

12. The optical fiber connector according to claim 9, characterized in that: A locking protrusion and a locking groove that cooperate with each other are arranged between the position retaining member and the optical fiber connector. When the sliding part passes over the snap-in protrusion and enters the other side of the slide groove, the position retaining member continues to be pushed, so that the locking protrusion and the locking groove can be snap-fitted to achieve the positioning of the position retaining member in the locking position.

13. The optical fiber connector according to claim 1, characterized in that: The optical fiber connector comprises a front housing, a rear housing and an optical fiber terminal assembly. The front housing is snap-fitted with the rear housing and the optical fiber terminal assembly is installed inside the front housing and the rear housing.

14. The optical fiber connector according to claim 1, characterized in that: A slider is integrally provided at the bottom of the position retaining member, a sleeve hole is provided in the slider along the sliding direction of the position retaining member, the slider is sleeved on the outside of the optical fiber connector through the sleeve hole and can slide relative to the optical fiber connector.

15. The optical fiber connector according to claim 1, characterized in that: An insertion hole for inserting the insertion rod is provided at one end of the position retaining member away from the clamping arm, so as to facilitate the assembly of the optical fiber connector.

16. The optical fiber connector according to claim 15, characterized in that: The end of the plug rod facing the socket is extended to form two oppositely arranged clamping blocks, the clamping blocks are clamped and matched with the socket, and the end of the plug rod facing the socket is provided with a collapse groove between the two clamping blocks.

17. A connector assembly, characterized in that: It comprises an optical module terminal having at least one plug-in cavity and the optical fiber connector according to any one of claims 1 to 16, wherein the optical fiber connector is detachably arranged in the plug-in cavity of the optical module terminal.

18. A connector assembly according to claim 17, characterized in that: A card slot is arranged in the inserting cavity, and a card protrusion which is card-engaged with the card slot is protruded on the card arm.

19. An automobile, characterized in that: A connector assembly comprising any one of claims 17-18.

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