Contact module and connector

Abstract

The utility model relates to the technical field of connectors, in particular to a contact module and a connector, the connector comprises the contact module, the contact module comprises a retaining sleeve, a contact piece is mounted in an inner hole of the retaining sleeve, a movable sleeve is connected to the end part, far away from the plugging end of the contact module, of the retaining sleeve in a plugging manner, and the movable sleeve is provided with a fixed part fixed with a cable sheath. The movable sleeve is provided with an inner hole which allows a core wire of a cable to movably penetrate through and is communicated with the inner hole of the retaining sleeve, an inserting sleeve section is formed at one end of the retaining sleeve and the movable sleeve, and an inserting sleeve cavity for movably installing the inserting sleeve section is formed in the inner hole of the other one so that the movable sleeve can move relative to the retaining sleeve. The opening of the plug bush cavity for installing the plug bush section is provided with an anti-drop structure for preventing the plug bush section from dropping, and when the contact module is subjected to a force in a corresponding direction of a cable sheath, the movable sleeve moves along with the cable sheath, and the position of the contact piece is fixed, so that the influence of a cable pulling force on the position of the contact piece can be reduced, and the transmission performance can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a contact module and a connector. Background Art

[0002] A contact module for connecting a cable and plugging and interconnecting with a mating connector is provided inside the housing of the connector. For an optical fiber connector, the structure of its contact module can be referred to Figure 1 , the contact module is connected with an optical cable, which includes a ferrule 1, a fixing sleeve 2 and a crimping sleeve 3. The ferrule 1 is an optical fiber ferrule and constitutes the contact member of the contact module, which is fixed at the front end of the inner hole of the fixing sleeve 2. The crimping sleeve 3 is located at the rear end of the fixing sleeve 2. The front end of the ferrule 1 forms the plugging end of the contact module. The optical cable includes an optical fiber core wire 4, an optical cable outer sheath 5 and an optical cable tensile layer 6. The optical cable tensile layer 6 is located between the optical fiber core wire 4 and the optical cable outer sheath 5. The optical fiber core wire 4 is in clearance fit with the optical cable tensile layer 6. The optical fiber core wire 4 passes through the crimping sleeve 3 and penetrates into the inner hole of the fixing sleeve 2, and its core is connected with the ferrule 1. The ferrule 1 is used for docking with the contact member of the mating optical fiber connector. The optical cable tensile layer 6 and the optical cable outer sheath 5 are sleeved on the outer peripheral surface of the rear end of the fixing sleeve 2 and are fixed by crimping through the crimping sleeve 3. The optical fiber core wire 4 is relatively soft while the optical cable outer sheath 5 is relatively hard, so that the optical cable outer sheath 5 located on the outermost layer of the optical cable can bear external forces.

[0003] The contact module with the above structure fixes the contact member and the optical cable outer sheath through an integral fixing sleeve. When the optical cable connected to the contact module is relatively hard, the optical cable outer sheath is relatively hard, and the optical cable outer sheath is easily affected by temperature changes and large bending amplitudes of the optical cable, resulting in large stress, which will generate a large pulling force on the contact module. Since the contact module is not fixed in the connector housing, the installation position of the contact module in the connector housing will be affected by the pulling force. The pulling force is transmitted to the front end of the contact member, which may cause the position of the contact member to change, such as deflection, thus affecting the docking of the contact member and having an adverse impact on the transmission performance of the product. Similarly, for the contact module of an electrical connector, there will also be the above problems. The stress on the relatively hard outer sheath of the cable will be transmitted to the electrical contact member through the fixing sleeve, and the cable will pull the contact module and affect the position of the electrical contact member, which may affect the plugging reliability of the contact member and is not conducive to the electrical transmission performance. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide a contact module to solve the problem that the contact module of the current connector is easily affected by the pulling force of the cable, resulting in the change of the position of the contact member and thus being unfavorable to the transmission performance; the purpose of the present utility model is also to provide a connector to solve the above problems.

[0005] The technical solution of the contact module of the present utility model is as follows:

[0006] The contact module comprises a retaining sleeve, wherein a contact piece is installed in the inner hole of the retaining sleeve, and an end sleeve of the retaining sleeve away from the plug-in end of the contact module is connected to a movable sleeve, the movable sleeve is provided with a fixing portion for fixing to the outer sheath of the cable, and the movable sleeve has an inner hole which is communicated with the inner hole of the retaining sleeve and through which the core wire of the cable can movably pass, a sleeve segment is formed at one end of the retaining sleeve and the movable sleeve, and an insert sleeve cavity for movably installing the insert sleeve segment is provided in the inner hole of the other end so that the movable sleeve can move relative to the retaining sleeve, and an anti-slip structure is provided at the opening of the insert sleeve cavity for inserting the insert sleeve segment to prevent the insert sleeve segment from slipping out.

[0007] Furthermore, a movable gap is provided between the insert sleeve section and the cavity wall of the insert sleeve cavity in both the axial and radial directions of the retaining sleeve.

[0008] Furthermore, the plug-in sleeve section is provided with an annular convex portion, the plug-in sleeve cavity is provided with an annular groove, and the annular convex portion is movably arranged in the annular groove.

[0009] Furthermore, a closing portion for engaging with the annular protrusion for blocking is provided at the opening, and the closing portion constitutes the anti-slip structure.

[0010] Furthermore, the insert sleeve section is provided with a limiting groove for the receiving opening to extend into.

[0011] Furthermore, the retaining sleeve is provided with a spring and the movable sleeve is provided with an outer mounting sleeve, the outer mounting sleeve is provided with a limiting portion for axially limiting cooperation with the connector housing, one end of the spring abuts against the retaining sleeve and the other end abuts against the outer mounting sleeve.

[0012] Furthermore, a stopper for engaging with the outer mounting sleeve is provided on the movable sleeve at a side of the outer mounting sleeve away from the contact piece.

[0013] Furthermore, a flaring structure is provided at the opening of the inner hole of the retaining sleeve close to the movable sleeve.

[0014] Furthermore, a circumferential limiting structure for limiting the circumferential rotation range of the movable sleeve is provided on the retaining sleeve.

[0015] Advantages of the contact module of the present utility model: The present utility model pioneeringly provides a contact module that can reduce the influence of cable stress on the transmission performance of contact components. By providing a movable sleeve and a retaining sleeve, the contact components are installed using the retaining sleeve and the movable sleeve is movably connected. The retaining sleeve and the movable sleeve form an insertion sleeve movable connection through the insertion sleeve section and the insertion sleeve cavity. The movable sleeve is fixed to the outer skin of the cable, and the core wire of the cable movably passes through the movable sleeve. The core wire of the cable passes through the inner hole of the retaining sleeve and the inner hole of the movable sleeve that are in communication with each other and penetrates into the retaining sleeve to be connected to the contact component. In such a connection structure between the contact module and the cable, when a large stress is generated on the relatively rigid outer skin of the cable and a pulling force is exerted on the contact module, the force on the outer skin of the cable is transmitted to the movable sleeve. Since the movable sleeve can move relative to the retaining sleeve, the force in the moving direction can be prevented from being transmitted to the retaining sleeve and affecting the contact components installed on the retaining sleeve. That is, when the contact module is subjected to the force in the corresponding direction of the outer skin of the cable, the movable sleeve moves along with the outer skin of the cable, while the position of the contact component remains unchanged. This can reduce the influence of the cable pulling force on the position of the contact component and is beneficial to ensuring the transmission performance.

[0016] The technical solution of the connector of the present utility model is as follows:

[0017] A connector includes a contact module. The contact module includes a retaining sleeve. A contact component is installed in the inner hole of the retaining sleeve. The end of the retaining sleeve away from the insertion end of the contact module is inserted and connected with a movable sleeve. The movable sleeve is provided with a fixing portion for fixing to the outer skin of the cable, and the movable sleeve has an inner hole for the core wire of the cable to movably pass through and is in communication with the inner hole of the retaining sleeve. One of the ends of the retaining sleeve and the movable sleeve forms an insertion sleeve section, and the inner hole of the other is provided with an insertion sleeve cavity for movably installing the insertion sleeve section so that the movable sleeve can move relative to the retaining sleeve. An anti-disengagement structure for preventing the insertion sleeve section from disengaging is provided at the opening of the insertion sleeve cavity for loading the insertion sleeve section.

[0018] Furthermore, an activity gap is provided between the insertion sleeve section and the cavity wall of the insertion sleeve cavity both in the axial direction and the radial direction of the retaining sleeve.

[0019] Furthermore, the insertion sleeve section is provided with an annular convex portion, and the insertion sleeve cavity is provided with an annular groove. The annular convex portion is movably arranged in the annular groove.

[0020] Furthermore, a closing portion for engaging and blocking with the annular convex portion is provided at the opening, and the closing portion constitutes the anti-disengagement structure.

[0021] Furthermore, a limiting groove for the closing portion to extend into is provided on the insertion sleeve section.

[0022] Furthermore, a spring is sleeved on the retaining sleeve and an outer mounting sleeve is provided on the movable sleeve. The outer mounting sleeve is provided with a limiting portion for limiting and cooperating with the connector housing in the axial direction. One end of the spring abuts against the retaining sleeve and the other end abuts against the outer mounting sleeve.

[0023] Further, on the side of the movable sleeve away from the contact member and outside the outer mounting sleeve, there is a stop portion for cooperating with the outer mounting sleeve in a stop manner.

[0024] Further, at the orifice of the inner hole of the retaining sleeve close to the movable sleeve, there is a flared structure.

[0025] Further, on the retaining sleeve, there is a circumferential limiting structure for restricting the circumferential rotation amplitude of the movable sleeve.

[0026] Beneficial effects of the connector of the present utility model: The present utility model pioneeringly provides a contact module of a connector that can reduce the influence of cable stress on the transmission performance of contact members. By providing a movable sleeve and a retaining sleeve, the contact members are installed by the retaining sleeve and the movable sleeve is movably connected. The retaining sleeve and the movable sleeve form an insertion sleeve movable connection through the insertion sleeve section. The movable sleeve is fixed to the outer skin of the cable, and the core wire of the cable movably passes through the movable sleeve. The core wire of the cable passes through the inner holes of the retaining sleeve and the movable sleeve that are in communication with each other and penetrates into the retaining sleeve to be connected to the contact member. Such a connection structure between the contact module and the cable, when a large stress is generated in the relatively hard outer skin of the cable and a pulling force is exerted on the contact module, the force on the outer skin of the cable is transmitted to the movable sleeve. Since the movable sleeve can move relative to the retaining sleeve, the force in the moving direction can be avoided from being transmitted to the retaining sleeve and affecting the contact members installed on the retaining sleeve. That is, when the contact module is subjected to the force in the corresponding direction of the outer skin of the cable, the movable sleeve moves along with the outer skin of the cable, while the position of the contact member remains unchanged. In this way, the influence of the cable pulling force on the position of the contact member can be reduced, which is beneficial to ensuring the transmission performance. Description of the Drawings

[0027] Figure 1 Schematic diagram of an optical fiber contact module in the prior art;

[0028] Figure 2 Schematic diagram of the installation structure of the contact module in Embodiment 1 of the connector of the present utility model;

[0029] Figure 3 For Figure 2 Schematic diagram of the contact module therein;

[0030] Figure 4 For Figure 3 Cross-sectional schematic diagram of the contact module therein;

[0031] Figure 5 For Figure 3 Schematic diagram before the crimping of the movable sleeve and the retaining sleeve therein;

[0032] Figure 6 For Figure 3 Schematic diagram after the crimping of the movable sleeve and the retaining sleeve therein;

[0033] Figure 7Schematic diagram of the contact module in Embodiment 2 of the connector of the present utility model.

[0034] In the figure: 1, pin; 2, fixing sleeve; 3, crimping sleeve; 4, optical fiber core wire; 5, cable outer sheath; 6, cable tensile layer;

[0035] 7, retaining sleeve; 70, insertion sleeve section; 71, circumferential limit key; 72, flared structure; 73, limit groove; 74, annular protrusion;

[0036] 8, movable sleeve; 80, insertion sleeve cavity; 81, circumferential limit mating groove; 82, necking portion; 83, annular groove;

[0037] 9, spring; 10, outer mounting sleeve; 11, connector housing; 12, positioning spring; 121, claw;

[0038] 13, electrical contact; 14, insulating sleeve. Detailed implementation mode

[0039] The contact module of the connector of the present utility model connects the cable through a movably connected retaining sleeve and a movable sleeve, fixes the relatively hard outer sheath of the cable on the movable sleeve, fixes the contact member on the retaining sleeve, and cuts off the force transmission between the cable outer sheath and the retaining sleeve and the contact member through the movable connection between the movable sleeve and the retaining sleeve, avoiding the influence of large stress on the cable outer sheath on the position of the contact member and ensuring the transmission performance of the contact member.

[0040] Embodiment 1 of the connector of the present utility model:

[0041] The connector of this embodiment is an optical fiber connector. As Figure 2 , Figure 3 , Figure 4 shown, the connector includes a connector housing 11 and a contact module installed in the connector housing 11. The contact module is used to connect the optical cable and realize the optical path conduction with the mating connector. The contact module includes a pin 1, a retaining sleeve 7, a movable sleeve 8, a crimping sleeve 3, a spring 9 and an outer mounting sleeve 10. The pin 1 is a ceramic pin and constitutes the contact member of the contact module. The pin 1 is fixedly installed at one end of the retaining sleeve 7. The other end of the retaining sleeve 7 is movably connected to the movable sleeve 8. The movable sleeve 8 is provided with a fixing portion for fixing the optical cable to cooperate with the crimping sleeve 3 to fix the cable outer sheath and the cable tensile layer of the optical cable. The inner hole of the retaining sleeve 7 communicates with the inner hole of the movable sleeve 8 for the optical fiber core wire of the optical cable to penetrate into the retaining sleeve 7. The core of the optical fiber core wire is inserted into the central hole of the pin 1. An insertion sleeve section 70 is formed at the end of the retaining sleeve 7. The inner hole of the movable sleeve 8 is provided with an insertion sleeve cavity 80. The insertion sleeve section 70 is located in the insertion sleeve cavity 80, and the movable sleeve 8 can move relative to the retaining sleeve 7.

[0042] The outer sheath of the optical cable is the outer sheath of the cable to which the contact module is connected, and the optical fiber core wire is the core wire of the cable. The core wire of the cable is relatively soft, and the core wire and the outer sheath are arranged with an empty sleeve. Even if there is stress on the core wire, the stress is relatively small and can be offset by the gap between the core wire and the outer sheath and the deformation of the core wire itself, which will not affect the position of the retaining sleeve fixed to it, and thus will not affect the position of the contact. In order to resist the external environment, the outer sheath of the cable is relatively hard and is easily affected by temperature changes and large bending amplitudes of the optical cable, resulting in relatively large stress. The relatively large stress on the outer sheath of the cable will be converted into a relatively large pulling force on the contact module by the optical cable. Since the contact module in this embodiment fixes the outer sheath of the optical cable through the movable sleeve 7, the force on the outer sheath of the optical cable is transmitted to the movable sleeve 8. Since the movable sleeve 8 can move relative to the retaining sleeve 7, the force in the moving direction can be avoided from being transmitted to the retaining sleeve 7 and affecting the contact installed on the retaining sleeve 7. The movable sleeve 8 moves with the relatively hard outer sheath of the optical cable, while the ferrule 1 and the retaining sleeve 7 can remain stationary, which can reduce the influence of the pulling force of the outer sheath of the cable on the position of the contact and is beneficial to ensuring the transmission performance.

[0043] Define the plug-in end of the contact module as the front end and the end for connecting the optical cable as the rear end. The plug-in direction of the connector is the front-rear direction, the axial direction of the retaining sleeve 7 is the front-rear direction, the inner hole of the retaining sleeve 7 penetrates along the front-rear direction, and the ferrule 1 is fixedly installed at the front end of the inner hole of the retaining sleeve 7, and the front part of the ferrule 1 is located outside the retaining sleeve 7. The rear end part of the retaining sleeve 7 forms an insertion sleeve section 70, and an insertion sleeve cavity 80 is formed at the front end of the inner hole of the movable sleeve 8. The fixing part of the movable sleeve 8 for fixing the optical cable is located at the rear side of the insertion sleeve cavity 80. The outer diameter of the part of the movable sleeve 8 provided with the insertion sleeve cavity 80 is larger than the outer diameter of the fixing part of the movable sleeve 8, and the inner diameter of the part of the movable sleeve 8 provided with the insertion sleeve cavity 80 is larger than the inner diameter of the fixing part of the movable sleeve 8. The fixing part of the movable sleeve 8 is correspondingly matched with the crimping sleeve 3 to crimp and fix the optical cable. An activity gap is provided between the cavity walls of the insertion sleeve section 70 and the insertion sleeve cavity 80 in both the axial and radial directions of the retaining sleeve 7, which can enable the movable sleeve 8 to swing relative to the retaining sleeve 7, adapt to the pulling forces in different directions, avoid the skew phenomenon of the contact in the connector, and ensure the mating performance of the connector.

[0044] Such as Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6As shown, the insert sleeve section 70 is provided with an annular convex portion 74, the insert sleeve cavity 80 is provided with an annular groove 83, the annular convex portion 74 is movably arranged in the annular groove 83, the outer diameter of the annular convex portion 74 of the retaining sleeve 7 is smaller than the inner diameter of the portion of the movable sleeve 8 provided with the annular groove 83, and the groove width of the annular groove 83 is larger than the axial width of the annular convex portion 74, so that the annular convex portion 74 has a radial and axial movable clearance in the annular groove 83, ensuring that the movable sleeve 8 can swing relative to the retaining sleeve 7. The annular convex portion 74 is used to cooperate with the annular groove 83 for movable connection, which is convenient for manufacturing, and the groove walls on both sides of the annular groove 83 can form a limit fit with the annular convex portion 74 to maintain the movable connection state of the movable sleeve 8 and the retaining sleeve 7.

[0045] The front end opening of the movable sleeve 8 constitutes an opening of the plug sleeve cavity 80 for the plug sleeve section 70 to be installed. A closing portion 82 for cooperating with the annular protrusion 74 is provided at the opening. The closing portion 82 is located at the front side of the annular groove 83 and forms the front side groove wall of the annular groove 83. The inner diameter of the movable sleeve 8 at the rear side groove wall of the annular groove 83 is smaller than the outer diameter of the annular protrusion 74. After the plug sleeve section 70 is installed in the plug sleeve cavity 80, the annular protrusion 74 extends to the annular groove 83. The rear side groove wall of the annular groove 83 can form a rearward limit for the annular protrusion 74. By pressing the receiving opening portion 82, the closing portion 82 is blocked at the front side of the annular protrusion 74 to prevent the plug sleeve section 70 from slipping out of the plug sleeve cavity 80. Figure 5 and Figure 6 Before crimping, the inner diameter of the closing portion 82 is larger than the outer diameter of the annular protrusion 74, so that the plug-in sleeve section 70 extends from the opening into the plug-in sleeve cavity 80, and the annular protrusion 74 extends to the annular groove 83. After the closing portion 82 is crimped, the inner diameter of the closing portion 82 is reduced, and the closing portion 82 can block the annular protrusion 74 to maintain the movable connection state between the movable sleeve 8 and the retaining sleeve 7. The closing portion 82 constitutes an anti-slip structure, which is used to prevent the plug-in sleeve section 70 from slipping out of the plug-in sleeve cavity 80. The structure is simple and easy to manufacture.

[0046] The plug-in sleeve section 70 is provided with a limiting groove 73 for the closing portion 82 to extend into, the limiting groove 73 is located on the front side of the annular protrusion 74, the limiting groove 73 is an annular groove arranged on the outer peripheral surface of the retaining sleeve 7, after the closing portion 82 is crimped, the end of the closing portion 82 is radially pressed into the limiting groove 73, the groove width of the limiting groove 73 is larger than the axial width of the closing portion 82, and a movable gap is provided between the closing portion 82 and the limiting groove 73 to ensure that the movable sleeve 8 can swing relative to the retaining sleeve 7, and the cooperation between the closing portion 82 and the limiting groove 73 is conducive to ensuring the reliable connection between the retaining sleeve 7 and the movable sleeve 8.

[0047] The circumferential limit key 71 is provided in the limit groove 73 of the holding sleeve 7. The circumferential limit key 71 is connected to the front side groove wall of the limit groove 73 and is spaced from the rear side groove wall of the limit groove 73. The constricted portion 82 of the movable sleeve 8 is provided with a circumferential limit fitting groove 81 that penetrates radially. The notch of the circumferential limit fitting groove 81 faces forward. The circumferential limit key 71 constitutes a circumferential limit structure on the holding sleeve 7 for restricting the circumferential rotation amplitude of the movable sleeve 8. There are two circumferential limit keys 71 and they are arranged opposite to each other in the radial direction of the holding sleeve 7. There are two circumferential limit fitting grooves 81 corresponding to the circumferential limit keys 71. The circumferential limit key 71 enters the circumferential limit fitting groove 81 to restrict the rotation of the movable sleeve 8 relative to the holding sleeve 7, avoiding fiber breakage caused by the torsion of the optical cable.

[0048] A positioning spring 12 is provided in the mounting hole of the connector housing 11 for mounting the contact module. The positioning spring 12 surrounds the contact module. The positioning spring 12 has a claw 121 that extends towards the contact module. The claw 121 forms a stop fit with the step on the outer wall of the outer mounting sleeve 10, axially fixing the outer mounting sleeve 10. The outer mounting sleeve 10 and the spring 9 are sleeved on the holding sleeve 7. The holding sleeve 7 can axially move relative to the outer mounting sleeve 10. The step on the outer wall of the outer mounting sleeve 10 constitutes a limiting portion for axially limiting and cooperating with the connector housing 11. The front end of the holding sleeve 7 is provided with a retaining platform for cooperating with the spring 9. The spring 9 and the outer mounting sleeve 10 can be sleeved on the holding sleeve 7 from the rear end of the holding sleeve 7. The outer diameter of the part of the holding sleeve 7 where the annular convex portion 74 is provided at the rear end is the same as the outer diameter of the part for sleeving the spring 9. The part of the holding sleeve 7 located behind the limit groove 73 forms the annular convex portion 74. One end of the spring 9 abuts against the retaining platform at the front end of the holding sleeve 7, and the other end abuts against the inner step of the outer mounting sleeve 10. When this connector is plugged into the corresponding mating connector, the pin 1 of the contact module is docked with the mating contact. The pin 1 will receive a backward pushing force and perform floating docking under the action of the spring 9. The pin 1, the holding sleeve 7, and the movable sleeve 8 will retreat relative to the outer mounting sleeve 10, and the spring 9 is compressed. The elastic force of the spring 9 is applied to the holding sleeve 7 and the outer mounting sleeve 10, and will not act on the movable sleeve 8. The elastic force of the spring 9 will not affect the relative movement of the movable sleeve 8 relative to the holding sleeve 7, which is beneficial to ensuring the ability of the movable sleeve 8 to relatively float within a small range relative to the holding sleeve 7 and avoiding the influence of the optical cable stress on the front-end contact. When the holding sleeve 7 retreats with the movable sleeve 8, although the holding sleeve 7 may also axially contact the movable sleeve 8, the movable sleeve 8 does not receive a force for maintaining contact axially, and the movable sleeve 8 can also retreat relative to the holding sleeve 7. The movable sleeve 8 still has sufficient ability to move relative to the holding sleeve 7, ensuring that the optical cable stress does not affect the front-end contact under the plugged state of the connector.

[0049] The movable sleeve 8 is installed at the rear side of the outer mounting sleeve 10. The wall thickness of the constricted part 82 of the movable sleeve 8 is greater than the groove depth of the limiting groove 73. The part of the front end face of the movable sleeve 8 protruding from the limiting groove 73 constitutes a stop portion provided on the side of the movable sleeve 8 away from the contact member of the outer mounting sleeve 10 for stop cooperation with the outer mounting sleeve 10. When the connector is not inserted into the mating connector, under the reset action of the spring 9, the movable sleeve 8 is stopped by the outer mounting sleeve 10 to limit the positions of the retaining sleeve 7 and the movable sleeve 8 on the connector housing 11. At this time, the compression amount of the spring 9 is very small, and the contact between the movable sleeve 8 and the outer mounting sleeve 10 will not affect the relative movement of the movable sleeve 8 with respect to the retaining sleeve 7.

[0050] The pin 1 is fixed at the front end of the retaining sleeve 7. The rear end of the retaining sleeve 7 is movably connected to the front end of the movable sleeve 8. The outer mounting sleeve 10 and the spring 9 are both sleeved on the retaining sleeve 7 and located at the front side of the movable sleeve 8, which is beneficial to reducing the radial dimension of the contact module. Moreover, in order to adapt to this connection structure, the retaining sleeve 7 has a sufficient axial length. The space in the inner hole of the retaining sleeve 7 located at the rear side of the pin 1 constitutes a potting space. In this way, the potting space in the retaining sleeve 7 is relatively long. When fixing the optical fiber by potting, the glue flows backward, and it is not easy to flow backward into the movable gap at the movable connection between the movable sleeve 8 and the retaining sleeve 7, avoiding glue adhesion and affecting the floating of the movable sleeve 8. An flared structure 72 is provided at the orifice of the inner hole of the retaining sleeve 7 close to the movable sleeve 8. The flared structure 72 is a tapered hole structure. The flared structure 72 can retain the glue and prevent the glue from flowing out.

[0051] In other embodiments, there may also be only an axial movable gap between the insert sleeve section and the wall of the insert sleeve cavity of the retaining sleeve to enable the movable sleeve to be axially movable relative to the retaining sleeve, or only a radial movable gap in the retaining sleeve to enable the movable sleeve to be radially movable relative to the retaining sleeve.

[0052] In other embodiments, the insert sleeve section of the retaining sleeve and the insert sleeve cavity of the movable sleeve may also be connected by a ball hinge structure.

[0053] In other embodiments, the limiting groove may not be provided, and the annular convex portion is formed by a retaining ring fixedly installed on the retaining sleeve.

[0054] In other embodiments, a retaining ring may also be fixedly provided on the retaining sleeve. The retaining ring is located between the outer mounting sleeve and the movable sleeve, and the retaining ring is used for stop cooperation with the outer mounting sleeve.

[0055] In other embodiments, an insert sleeve cavity may also be provided at the rear end of the retaining sleeve, and an insert sleeve section may be provided at the front end of the movable sleeve, so that the front end of the movable sleeve extends into the rear end of the retaining sleeve to form a movable connection.

[0056] In other embodiments, a limiting post may also be inserted through the opening of the insertion sleeve cavity of the movable sleeve. The limiting post is fixed to the movable sleeve, and the limiting post has a portion inserted into the insertion sleeve cavity to form an anti - detachment structure for preventing the insertion sleeve section from coming off.

[0057] Embodiment 2 of the connector of the present utility model:

[0058] The connector of this embodiment is an electrical connector, which includes a connector housing and a contact module installed in the connector housing. As Figure 7 shown, the contact module includes an electrical contact 13, an insulating sleeve 14, and a retaining sleeve 7, a movable sleeve 8, and a crimping sleeve 3. The rear part of the movable sleeve 8 cooperates with the crimping sleeve 3 to crimp the cable outer sheath. This contact module is used to connect the cable and achieve electrical conduction with the mating connector. The insulating sleeve 14 is arranged outside the electrical contact 13, and the electrical contact 13 and the insulating sleeve 14 are integrally inserted into the retaining sleeve 7. The electrical contact 13 is a jack contact, and the front end of the electrical contact 13 is provided with a jack structure. The front - end openings of the inner holes of the insulating sleeve 14 and the retaining sleeve 7 are for the pins of the mating connector to pass through and be inserted into the jacks of the electrical contact 13. The rear end of the retaining sleeve 7 is movably connected to the front end of the movable sleeve 8. The movable - connection structure between the retaining sleeve 7 and the movable sleeve 8 in this embodiment is the same as the movable - connection structure between the retaining sleeve and the movable sleeve in the above - mentioned Embodiment 1, and will not be elaborated here. Similarly, through the movable connection between the retaining sleeve 7 and the movable sleeve 8, the pulling force of the cable outer sheath on the contact module can be prevented from acting on the retaining sleeve 7 and the electrical contact 13, avoiding the stress of the relatively hard cable outer sheath from affecting the position of the front - end electrical contact 13 and preventing the electrical contact from being deflected and affecting the reliable insertion. The contact module in this embodiment is also limited and installed on the connector housing through a spring and an outer mounting sleeve. This mounting structure is the same as the mounting structure in the above - mentioned Embodiment 1, that is, the spring and the outer mounting sleeve are both sleeved on the retaining sleeve 7. One end of the spring abuts against the retaining sleeve and the other end abuts against the outer mounting sleeve. When this connector is inserted into the mating connector, the retaining sleeve retreats and compresses the spring, and the relatively large elastic force of the spring will not act on the movable sleeve, which is beneficial to ensuring the ability of the movable sleeve to move relative to the retaining sleeve.

[0059] Embodiment of the contact module of the present utility model:

[0060] The contact module in this embodiment is the same as the contact module in Embodiment 1 or 2 of the above - mentioned connector, and will not be elaborated here.

[0061] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions recorded in the foregoing embodiments without creative efforts, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A contact module, characterized in that: The invention comprises a retaining sleeve (7), wherein a contact piece is installed in the inner hole of the retaining sleeve (7), and an end sleeve of the retaining sleeve (7) away from the contact module plug-in end is connected to a movable sleeve (8), wherein the movable sleeve (8) is provided with a fixing portion for fixing to the outer sheath of a cable, and the movable sleeve (8) has an inner hole for allowing the core wire of the cable to pass movably and which is communicated with the inner hole of the retaining sleeve (7), wherein one end of the retaining sleeve (7) and the movable sleeve (8) is formed with a plug-in sleeve section (70), and the inner hole of the other end is provided with a plug-in sleeve cavity (80) for movably installing the plug-in sleeve section (70) so that the movable sleeve (8) can move relative to the retaining sleeve (7), and an anti-slip structure for preventing the plug-in sleeve section (70) from slipping out is provided at the opening of the plug-in sleeve cavity (80) for inserting the plug-in sleeve section (70) 2. The contact module according to claim 1, characterized in that: A movable gap is provided between the insert sleeve section (70) and the cavity wall of the insert sleeve cavity (80) in both the axial and radial directions of the retaining sleeve (7).

3. The contact module according to claim 1 or 2, characterized in that: The plug-in sleeve section (70) is provided with an annular convex portion (74), the plug-in sleeve cavity (80) is provided with an annular groove (83), and the annular convex portion (74) is movably arranged in the annular groove (83).

4. The contact module according to claim 3, characterized in that: A closing portion (82) for engaging with the annular protrusion (74) for blocking is provided at the opening, and the closing portion (82) constitutes the anti-slip structure.

5. The contact module according to claim 4, characterized in that: The inserting sleeve section (70) is provided with a limiting groove (73) for the receiving opening (82) to extend into.

6. The contact module according to claim 1 or 2, characterized in that: A spring (9) is sleeved on the retaining sleeve (7) and the movable sleeve (8) is provided with an outer mounting sleeve (10), the outer mounting sleeve (10) is provided with a limiting portion for limiting cooperation with the connector housing (11) in the axial direction, one end of the spring (9) abuts against the retaining sleeve (7) and the other end abuts against the outer mounting sleeve (10).

7. The contact module according to claim 6, characterized in that: A stopper for stoppering with the outer mounting sleeve (10) is provided on the movable sleeve (8) at a side of the outer mounting sleeve (10) away from the contact piece.

8. The contact module according to claim 1 or 2, characterized in that: An expansion structure (72) is provided at the opening of the inner hole of the retaining sleeve (7) close to the movable sleeve (8).

9. The contact module according to claim 1 or 2, characterized in that: The retaining sleeve (7) is provided with a circumferential limiting structure for limiting the circumferential rotation range of the movable sleeve (8).

10. A connector, characterized in that The contact module comprises any one of claims 1 to 9.

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