Plug connector and connector assembly

Abstract

The present invention provides a plug connector and a connector assembly, which belongs to the field of electrical connectors. The plug connector includes a plug body, an elastic hook, and an unlocking sleeve. The plug connector also includes a first limiting structure and a second limiting structure that are relatively fixed to the plug body and arranged front and back. The unlocking sleeve includes a transmission part located between the first limiting structure and the second limiting structure. An elastic member in a compressed state is arranged between the second limiting structure and the transmission part. The transmission part is pressed and matched with the first limiting structure under the pushing action of the elastic member. The connector assembly includes a plug connector and a socket connector. The present invention prevents the unlocking sleeve from accidentally being unlocked due to impact by arranging an elastic member on the plug connector for supporting the unlocking sleeve at the rear, thereby avoiding accidental disengagement of the plug connector and the socket connector.

Description

Technical Field

[0001] The invention belongs to the field of electrical connectors, and in particular relates to a plug connector and a connector assembly. Background Art

[0002] After the plug connector and the socket connector are plugged together, the cable can be conductively connected to the corresponding device. In some cases, the cable connected to the plug connector may be subjected to a pulling force, so in order to prevent the plug connector from being separated from the socket connector due to the pulling force, a locking mechanism is often provided on the plug connector and the socket connector.

[0003] The Chinese utility model patent with the existing authorization announcement number CN219677683U and the authorization announcement date September 12, 2023 discloses a push-pull unlocking connector plug-in waterproof structure, specifically discloses a plug and a socket, a locking mechanism is provided between the plug and the socket, the housing of the socket is provided with an insertion cavity for the plug to be inserted, the locking mechanism includes a limit groove arranged on the inner side wall of the insertion cavity, and also includes an elastic hook arranged on the plug, after the plug is inserted into place, the elastic hook is ejected into the limit groove and engaged with the limit groove, the plug and the socket are locked with each other, at this time, the cable connected to the plug is pulled, and the plug and the socket cannot be separated. A sliding sleeve is slidably provided on the plug, and a through hole for the elastic hook to pass through is opened on the sliding sleeve. When the sliding sleeve is pulled in a direction away from the socket, the hole wall of the through hole of the sliding sleeve will be against the inclined surface of the elastic hook, thereby releasing the cooperation between the elastic hook and the limit groove, so that the plug and the socket can be separated from each other.

[0004] In actual use, the sleeve is prone to slip when subjected to an instantaneous impact, causing the elastic hook and the limit groove to be accidentally unlocked, thereby causing the plug and the socket to accidentally disengage. In particular, when the connector assembly using the above locking mechanism is used underwater, the impact of water flow is an important reason for the sleeve to accidentally slip.

[0005] The above problem can be solved by providing a secondary locking pin between the sleeve and the plug to lock the sliding of the sleeve. However, after adding the secondary locking pin, the plugging, locking and unlocking of the plug and the socket require additional operating steps, which is inconvenient to operate, especially for the operation of underwater robots when used underwater. Summary of the invention

[0006] One of the purposes of the present invention is to provide a plug connector to solve the technical problem in the prior art that the sliding sleeve on the plug connector is easy to slide when subjected to a small instantaneous impact, causing the elastic hook and the limiting groove to be accidentally unlocked, thereby causing the plug and the socket to be accidentally separated.

[0007] Another object of the present invention is to provide a connector assembly to solve the above technical problem.

[0008] To achieve the above-mentioned purpose, the technical solution of the plug connector provided by the present invention is:

[0009] A plug connector, defining the end of the plug connector for mating with a socket connector as a front end, the plug connector comprising a plug body, an elastic hook arranged on the plug body, and an unlocking sleeve matched with the plug body guide, the unlocking sleeve comprising an unlocking portion located in front of the elastic hook and causing the elastic hook to deform when the unlocking sleeve moves backward to perform an unlocking operation, the plug connector also comprising a first limiting structure and a second limiting structure fixed relatively to the plug body and arranged front and back, the unlocking sleeve comprising a transmission portion located between the first limiting structure and the second limiting structure, an elastic member in a compressed state is arranged between the second limiting structure and the transmission portion, and the transmission portion is pressed into mating with the first limiting structure under the pushing action of the elastic member.

[0010] As a further improvement, a force relief member is provided between the elastic member and the transmission part. The force relief member is sleeved on the plug body and can slide relative to the plug body in the front-rear direction.

[0011] As a further improvement, the weight of the force relief member is greater than or equal to the weight of the unlocking sleeve.

[0012] As a further improvement, the unlocking sleeve further comprises a sleeve body and an operating member located behind the sleeve body for clamping by the robot or fixedly connected to the robot, and the transmission part protrudes inwardly relative to the sleeve body.

[0013] As a further improvement, the operating member includes a connecting ring and a connecting rod, the rear end of the connecting rod is fixedly connected to the connecting ring, and the unlocking sleeve also includes a connecting part located outside the rear end of the sleeve body, and the front end of the connecting rod is fixedly connected to the connecting part.

[0014] As a further improvement, the unlocking sleeve includes a sleeve body and a connecting portion located at the rear of the sleeve body and protruding outward, the outer contour size of the connecting portion is larger than the outer contour size of the force relief piece, and the transmission portion protrudes inward relative to the sleeve body.

[0015] As a further improvement, a limiting ring is fixedly provided on the plug body, and the front side surface of the limiting ring constitutes a second limiting structure.

[0016] As a further improvement, the front end of the elastic hook is provided with a first inclined surface for guiding during the plug-in mating process of the plug connector and the socket connector, and the unlocking portion is provided with a second inclined surface for slidingly mating with the first inclined surface.

[0017] As a further improvement, the elastic hook includes a spring body and a hook body located at the front end of the spring body, and the rear end of the spring body is fixedly connected to the plug body.

[0018] As a further improvement, an outwardly protruding mounting portion is provided in the middle position of the plug body, the rear end of the spring body is fixedly connected to the outer peripheral surface of the mounting portion, the rear side surface of the mounting portion constitutes a first limiting structure or an isolation ring is installed on the rear side of the mounting portion, and the rear side surface of the isolation ring constitutes the first limiting structure.

[0019] As a further improvement, the rear end of the elastic hook is provided with at least two connecting bolts arranged front and back, and the connecting bolts are threadedly assembled on the mounting portion.

[0020] As a further improvement, a long accommodating hole corresponding to the elastic hook is opened on the side wall of the unlocking sleeve. The length direction of the long accommodating hole is in the same direction as the front-to-back direction. The elastic hook is located in the long accommodating hole, and the front hole wall of the long accommodating hole constitutes the unlocking part.

[0021] As a further improvement, the plug body is a cylindrical structure, the unlocking sleeve is a cylindrical structure, the width of the elastic hook is adapted to the width of the accommodating long hole, and the elastic hook constitutes a rotation limiting member for limiting the unlocking sleeve in the circumferential direction to stop the plug body and the unlocking sleeve from rotating.

[0022] As a further improvement, the elastic member is a coil spring or a corrugated spring.

[0023] As a further improvement, the elastic member is an elastic rubber member.

[0024] As a further improvement, a guiding cone surface is provided on the inner side of the front end of the unlocking sleeve for guiding the plug connector and the socket connector when they are plugged into each other.

[0025] As a further improvement, a convex ring protruding outward is provided at the front end of the unlocking sleeve, and a guiding cone surface is provided on the inner side of the convex ring.

[0026] As a further improvement, a groove for indicating the posture of the plug connector is formed at the front end of the unlocking sliding sleeve.

[0027] The beneficial effect is that the plug connector provided by the present invention is an improvement over the prior art. The present invention provides an elastic member for supporting the unlocking sleeve at the rear on the plug connector, thereby preventing the unlocking sleeve from moving backward after being impacted or reducing the amount of backward movement of the unlocking sleeve, thereby preventing the unlocking sleeve from accidentally unlocking the elastic hook, and avoiding the plug connector from accidentally disengaging from the socket connector.

[0028] To achieve the above-mentioned purpose, the technical solution of the connector assembly provided by the present invention is:

[0029] A connector assembly includes a plug connector and a socket connector, wherein the end of the plug connector used to mate with the socket connector is defined as a front end, the plug connector includes a plug body, an elastic hook arranged on the plug body, and an unlocking sleeve matched with the plug body guide, the unlocking sleeve includes an unlocking portion located in front of the elastic hook and causing the elastic hook to deform when the unlocking sleeve moves backward to perform an unlocking operation, the plug connector also includes a first limiting structure and a second limiting structure fixed relatively to the plug body and arranged front and back, the unlocking sleeve includes a transmission portion located between the first limiting structure and the second limiting structure, an elastic member in a compressed state is arranged between the second limiting structure and the transmission portion, and the transmission portion is pressed into engagement with the first limiting structure under the push of the elastic member.

[0030] As a further improvement, a force relief member is provided between the elastic member and the transmission part. The force relief member is sleeved on the plug body and can slide relative to the plug body in the front-rear direction.

[0031] As a further improvement, the weight of the force relief member is greater than or equal to the weight of the unlocking sleeve.

[0032] As a further improvement, the unlocking sleeve further comprises a sleeve body and an operating member located behind the sleeve body for clamping by the robot or fixedly connected to the robot, and the transmission part protrudes inwardly relative to the sleeve body.

[0033] As a further improvement, the operating member includes a connecting ring and a connecting rod, the rear end of the connecting rod is fixedly connected to the connecting ring, and the unlocking sleeve also includes a connecting part located outside the rear end of the sleeve body, and the front end of the connecting rod is fixedly connected to the connecting part.

[0034] As a further improvement, the unlocking sleeve includes a sleeve body and a connecting portion located at the rear of the sleeve body and protruding outward, the outer contour size of the connecting portion is larger than the outer contour size of the force relief piece, and the transmission portion protrudes inward relative to the sleeve body.

[0035] As a further improvement, a limiting ring is fixedly provided on the plug body, and the front side surface of the limiting ring constitutes a second limiting structure.

[0036] As a further improvement, the front end of the elastic hook is provided with a first inclined surface for guiding during the plug-in mating process of the plug connector and the socket connector, and the unlocking portion is provided with a second inclined surface for slidingly mating with the first inclined surface.

[0037] As a further improvement, the elastic hook includes a spring body and a hook body located at the front end of the spring body, and the rear end of the spring body is fixedly connected to the plug body.

[0038] As a further improvement, an outwardly protruding mounting portion is provided in the middle position of the plug body, the rear end of the spring body is fixedly connected to the outer peripheral surface of the mounting portion, the rear side surface of the mounting portion constitutes a first limiting structure or an isolation ring is installed on the rear side of the mounting portion, and the rear side surface of the isolation ring constitutes the first limiting structure.

[0039] As a further improvement, the rear end of the elastic hook is provided with at least two connecting bolts arranged front and back, and the connecting bolts are threadedly assembled on the mounting portion.

[0040] As a further improvement, a long accommodating hole corresponding to the elastic hook is opened on the side wall of the unlocking sleeve. The length direction of the long accommodating hole is in the same direction as the front-to-back direction. The elastic hook is located in the long accommodating hole, and the front hole wall of the long accommodating hole constitutes the unlocking part.

[0041] As a further improvement, the plug body is a cylindrical structure, the unlocking sleeve is a cylindrical structure, the width of the elastic hook is adapted to the width of the accommodating long hole, and the elastic hook constitutes a rotation limiting member for limiting the unlocking sleeve in the circumferential direction to stop the plug body and the unlocking sleeve from rotating.

[0042] As a further improvement, the elastic member is a coil spring or a corrugated spring.

[0043] As a further improvement, the elastic member is an elastic rubber member.

[0044] As a further improvement, a guiding cone surface is provided on the inner side of the front end of the unlocking sleeve for guiding the plug connector and the socket connector when they are plugged into each other.

[0045] As a further improvement, a convex ring protruding outward is provided at the front end of the unlocking sleeve, and a guiding cone surface is provided on the inner side of the convex ring.

[0046] As a further improvement, a groove for indicating the posture of the plug connector is formed at the front end of the unlocking sliding sleeve.

[0047] The beneficial effect is that the connector assembly provided by the present invention is an improvement over the prior art. The present invention provides an elastic member for supporting the unlocking sleeve at the rear on the plug connector, thereby preventing the unlocking sleeve from moving backward after being impacted or reducing the amount of backward movement of the unlocking sleeve, thereby preventing the unlocking sleeve from accidentally unlocking the elastic hook, and avoiding accidental disengagement of the plug connector and the socket connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a schematic diagram of the overall structure of the plug connector in Embodiment 1 of the plug connector of the present invention;

[0049] Figure 2 is a side view of the plug connector in Embodiment 1 of the plug connector of the present invention;

[0050] Figure 3 is a cross-sectional view of the plug connector in Embodiment 1 of the plug connector of the present invention;

[0051] Figure 4 It is a cross-sectional view of the plug connector and the socket connector in the plug-in state in the embodiment 1 of the plug connector of the present invention;

[0052] Figure 5 It is a cross-sectional view of the socket connector in Embodiment 1 of the plug connector in the present invention.

[0053] Description of reference numerals:

[0054] 1. Plug body; 101. Mounting part; 102. Threaded hole; 2. Elastic hook; 21. Shrapnel body; 22. Hook body; 23. First inclined surface; 24. Connecting hole; 3. Unlocking sleeve; 31. Sleeve body; 32. Accommodating long hole; 33. Second inclined surface; 34. Connecting part; 35. Transmission part; 36. Protruding ring; 37. Guide cone surface; 38. Groove; 4. Operating part; 41. Connecting ring; 42. Connecting rod; 5. Limiting ring; 6. Unloading member; 7. Coil spring; 8. Socket connector; 9. Matching protrusion; 10. Connecting bolt. DETAILED DESCRIPTION

[0055] The present invention is further described in detail below in conjunction with embodiments.

[0056] To solve the problems in the prior art, the basic concept of the present invention is to provide an elastic member on the plug connector for supporting the unlocking sleeve at the rear, thereby preventing the unlocking sleeve from accidentally being unlocked due to impact, thereby avoiding accidental disengagement of the plug connector and the socket connector.

[0057] Specific embodiment 1 of the plug connector provided by the present invention:

[0058] The end of the plug connector that is plugged and matched with the socket connector is the front end.

[0059] See attached Figure 1 , Attachment Figure 2 and attached Figure 3 The plug connector includes a plug body 1, an elastic hook 2 arranged on the plug body 1, and an unlocking sleeve 3 guided and matched with the plug body 1. The plug body 1 is cylindrical as a whole, and the unlocking sleeve 3 is cylindrical and sleeved on the plug body 1. An electrical socket contact is arranged in the plug body 1, and an electrical pin contact is arranged in the socket connector adapted to the plug connector. In other embodiments, the cross-sectional shape of the plug body 1 can also be rectangular, and in this case, the unlocking sleeve 3 is rectangular and cylindrical.

[0060] Four elastic hooks 2 are evenly arranged along the circumference of the plug body 1. The elastic hooks 2 include an elastic sheet body 21 capable of elastic deformation and a hook body 22 located at the front end of the elastic sheet body 21. The rear end of the elastic sheet body 21 is fixedly connected to the plug body 1. A radially outwardly protruding mounting portion 101 is provided at the middle position of the outer shell of the plug body 1. A connecting hole 24 is provided at the rear end of the elastic sheet body 21. Two connecting holes 24 are provided and arranged at intervals along the front-to-back direction. A threaded hole 102 corresponding to the connecting hole 24 is provided on the outer circumference of the mounting portion 101. When assembling, the connecting bolt 10 is passed through the corresponding connecting hole 24 and then threadedly matched with the corresponding bolt hole to fix the rear end of the elastic sheet body 21 on the outer circumference of the mounting portion 101.

[0061] The two connecting bolts 10 can prevent the elastic hook 2 from rotating relative to the plug body 1 . In other embodiments, one elastic hook 2 can correspond to three or four connecting bolts 10 arranged along the front-to-back direction, or can correspond to only one connecting bolt 10 .

[0062] See attached Figure 4 and attached Figure 5 The space between the front of the elastic hook 2 and the plug body 1 is for the shell of the socket connector 8 to be inserted. After the plug connector and the socket connector 8 are plugged in, the hook body 22 is engaged with the mating protrusion 9 on the socket connector 8, thereby locking the plug connector and the socket connector 8 with each other. During the plugging process, the hook body 22 needs to pass over the mating protrusion 9, and the spring body 21 needs to bend radially outward during the process of the hook body 22 passing over the mating protrusion 9. After the hook body 22 passes over the mating protrusion 9, the spring body 21 returns to its original state, and at this time, the hook body is axially engaged with the mating protrusion 9. A first inclined surface 23 is provided on the inner side of the front end of the hook body 22. During the plugging process, the first inclined surface 23 is slidably engaged with the mating protrusion 9. The first inclined surface 23 can guide and transmit the hook body 22, so that the hook body 22 can be smoothly bent radially outward.

[0063] The unlocking sleeve 3 includes a sleeve body 31, the inner diameter of the sleeve body 31 is adapted to the outer diameter of the mounting portion 101 and is guided and matched, the sleeve body 31 is provided with four accommodating long holes 32, the length direction of the accommodating long holes 32 is in the same direction as the axis of the sleeve body 31, the accommodating long holes 32 are evenly distributed along the circumference of the sleeve body 31, and the four elastic hooks 2 are respectively located in the four accommodating long holes 32, and the width of the elastic hooks 2 is adapted to the width of the accommodating long holes 32, so that the elastic hooks 2 can limit the unlocking sleeve 3 in the circumferential direction, thereby making the unlocking sleeve 3 and the plug body 1 stop rotating, so the elastic hooks 2 also constitute a rotation limiter. In other embodiments, the head diameter of the connecting bolt 10 can be adapted to the width of the accommodating long holes 32, so that the head of the connecting bolt 10 can be used to limit the unlocking sleeve 3 in the circumferential direction, so that the unlocking sleeve 3 and the plug body 1 can stop rotating.

[0064] The front wall of the receiving slot 32 is an inclined surface structure and constitutes a second inclined surface 33, which can be slidably matched with the first inclined surface 23. When the unlocking sleeve 3 moves backward relative to the plug body 1, the second inclined surface 33 slides relative to the first inclined surface 23, thereby forcing the front end of the elastic hook 2 to bend and deform radially outward, thereby releasing the engagement between the elastic hook 2 and the mating protrusion 9, and the plug connector can be separated from the socket connector 8. Therefore, the second inclined surface 33 constitutes an unlocking portion for performing an unlocking operation.

[0065] The front end of the sleeve body 31 is provided with a convex ring 36 protruding outward, and the inner side of the convex ring 36 is provided with a guide cone 37. The provided guide cone 37 can guide the shell of the socket connector 8 during the plug-in process to ensure smooth plug-in. The guide cone 37 is provided on the inner side of the convex ring 36, which can effectively expand the radial dimension of the guide cone 37. The plug connector needs to be operated by a robot manipulator to be plugged into the socket connector 8. When the robot operation accuracy is limited and affected by water flow, it can effectively ensure that the plug connector and the socket connector 8 are plugged smoothly. In other embodiments, the convex ring 36 may not be provided, and the guide cone 37 may be directly processed on the sleeve body 31.

[0066] A groove 38 is formed on the outer peripheral surface of the convex ring 36. The groove 38 can be used as a mark to facilitate the operator to identify the posture of the plug connector, so that the operator can install the plug connector on the robot's manipulator at the correct angle so that the plug connector and the socket connector can be plugged in at the correct angle.

[0067] The unlocking sleeve 3 also includes an operating member 4 for the robot to clamp or to be fixedly connected to the robot, and the operating member 4 is located at the rear of the sleeve body 31 and is fixedly connected to the sleeve body 31. Specifically, the operating member 4 includes a connecting ring 41 and a connecting rod 42, and the rear end of the connecting rod 42 is fixedly connected to the connecting ring 41 by bolts, and the rear end of the sleeve body 31 is provided with an annular connecting portion 34 protruding outward, and the front end of the connecting rod 42 is fixedly connected to the connecting portion 34 by bolts.

[0068] The rear end of the sleeve body 31 is provided with an annular transmission part 35 protruding inward, the rear side surface of the transmission part 35 is coplanar with the rear side surface of the connecting part 34, and the transmission part 35 is located behind the mounting part 101. The rear end of the plug body 1 is fixedly connected to the limiting ring 5, and the transmission part 35 is located in front of the limiting ring 5. An isolation ring is fixedly installed on the rear side of the mounting part 101, the rear side surface of the isolation ring constitutes a first limiting structure, and the front side surface of the limiting ring 5 constitutes a second limiting structure. An elastic member is arranged between the second limiting structure and the transmission part 35. In this embodiment, the elastic member is specifically a coil spring 7 sleeved outside the plug body 1. In other embodiments, the elastic member can also be a corrugated spring or an annular elastic rubber member. The transmission part 35 is pressed against the first limiting structure under the action of the elastic member, and the elastic member is always in a compressed state. When the unlocking sleeve 3 moves backward relative to the plug body 1, the compression amount of the elastic member increases.

[0069] An annular unloading member 6 is provided between the elastic member and the transmission part 35. The cross-sectional shape of the unloading member 6 is rectangular. The unloading member 6 is sleeved on the plug body 1. The unloading member 6 can slide in the front-to-back direction relative to the plug body 1. Moreover, the weight of the unloading member 6 is greater than or equal to the sum of the weights of the unlocking sleeve 3 and the operating member 4. Under normal circumstances, under the action of the coil spring 7 providing the unloading member 6 with a forward thrust, the front end surface of the unloading member 6 contacts the rear end surface of the transmission part 35.

[0070] After the plug connector and the socket connector 8 are plugged together, the elastic hook 2 and the mating protrusion 9 are engaged and engaged to lock the plug connector and the socket connector 8. During use, if the unlocking sleeve 3 is subjected to an impact force, the unlocking sleeve 3 will quickly move backwards and hit the unloading member 6. The unlocking sleeve 3 transfers momentum to the unloading member 6 through the impact. Since the weight of the unloading member 6 is large, the unlocking sleeve 3 will quickly stop moving, and the unloading member 6 will slowly move backwards. Since the unloading member 6 is supported by an elastic member at the rear, the unloading member 6 will stop moving after moving a certain distance and return to its original position under the action of the elastic member. After the unlocking sleeve 3 in the plug connector is impacted, there will be no backward movement, or the amount of backward movement is extremely small, which will not cause the elastic hook 2 to disengage from the mating protrusion 9 and unlock the plug connector and the socket connector 8.

[0071] Specific embodiment 2 of the plug connector provided by the present invention:

[0072] This embodiment is based on Embodiment 1, and differs from Embodiment 1 in that no operating member is provided in this embodiment, and the plug connector in this embodiment is plugged into the socket connector by manual operation.

[0073] The weight of the force relief member in this embodiment may be smaller than that in embodiment 1. Specifically, the weight of the force relief member in this embodiment is greater than or equal to the weight of the unlocking sleeve.

[0074] Specific embodiment 3 of the plug connector provided by the present invention:

[0075] This embodiment is based on the first embodiment, and is different from the first embodiment in that the present embodiment does not have a force-relieving member, but only an elastic member, the front end of the elastic member is press-fitted with the transmission part of the unlocking sleeve, and the rear end of the elastic member is press-fitted with the second limiting structure. Compared with the first embodiment, the initial compression amount of the elastic member in the present embodiment needs to be larger, so as to effectively resist the impact of the unlocking sleeve.

[0076] Specific embodiment 4 of the plug connector provided by the present invention:

[0077] This embodiment is based on the first embodiment, and is different from the first embodiment in that the unlocking sleeve in this embodiment is not provided with an accommodating slot, and an unlocking hook is fixedly connected to the front end surface of the sleeve body in this embodiment, and the unlocking hook includes a longitudinal rod extending along the axial direction of the sleeve body and a transverse rod perpendicular to the longitudinal rod, and the unlocking hook is L-shaped as a whole. The transverse rod can be slidably matched with the first inclined surface, and the transverse rod constitutes the unlocking portion.

[0078] Specific embodiment 5 of the plug connector provided by the present invention:

[0079] This embodiment is based on the embodiment 1, and is different from the embodiment 1 in that the elastic hook and the outer shell portion of the plug body are integrally formed in this embodiment.

[0080] Specific embodiment 6 of the plug connector provided by the present invention:

[0081] This embodiment is based on the first embodiment, and is different from the first embodiment in that the weight of the unloading member in this embodiment is less than the sum of the weights of the unlocking sleeve and the operating member. The unloading member in this embodiment can transmit force between the elastic member and the transmission part, and can play a certain role in resisting impact, but compared with the first embodiment, the initial compression amount of the elastic member in this embodiment needs to be larger, but compared with not providing the unloading member, the initial compression amount of the elastic member is smaller, and the unlocking operation is more labor-saving.

[0082] Specific embodiment 7 of the plug connector provided by the present invention:

[0083] This embodiment is based on Embodiment 1, and differs from Embodiment 1 in that a limiting ring is not provided in this embodiment, and an annular groove is provided on the outer peripheral surface of the shell part of the plug connector in this embodiment, and the front groove wall and the rear groove wall of the annular groove constitute a first limiting structure and a second limiting structure respectively.

[0084] Specific embodiment 8 of the plug connector provided by the present invention:

[0085] This embodiment is based on Embodiment 1, and differs from Embodiment 1 in that no isolation ring is provided in this embodiment, and the rear side surface of the mounting portion is directly used as the first limiting structure in this embodiment.

[0086] Specific embodiments of the connector assembly provided by the present invention:

[0087] The connector assembly includes a plug connector and a socket connector. The plug connector is the plug connector in any one of the above-mentioned embodiments 1-8 of the plug connector, which will not be described in detail here.

[0088] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A plug connector, wherein the end of the plug connector for mating with a socket connector (8) is defined as a front end, the plug connector comprising a plug body (1), an elastic hook (2) provided on the plug body (1), an unlocking sleeve (3) guided and mated with the plug body (1), the unlocking sleeve (3) comprising an unlocking portion located in front of the elastic hook (2) and causing the elastic hook (2) to deform when the unlocking sleeve (3) moves backward to perform an unlocking operation, and wherein the front end is characterized in that: The plug connector further comprises a first limiting structure and a second limiting structure which are fixed relative to the plug body (1) and arranged front to back. The unlocking sleeve (3) comprises a transmission part (35) located between the first limiting structure and the second limiting structure. An elastic member in a compressed state is provided between the second limiting structure and the transmission part (35). The transmission part (35) is pressed into engagement with the first limiting structure under the pushing action of the elastic member. A force relief member (6) is provided between the elastic member and the transmission part (35). The force relief member (6) is sleeved on the plug body (1) and can slide relative to the plug body (1) in the front to back direction.

2. The plug connector according to claim 1, wherein: The weight of the force-releasing member (6) is greater than or equal to the weight of the unlocking sliding sleeve (3).

3. The plug connector according to claim 1 or 2, wherein: The unlocking sleeve (3) further comprises a sleeve body (31) and an operating member (4) located behind the sleeve body (31) for the robot to clamp or to be fixedly connected to the robot, and the transmission portion (35) protrudes inwardly relative to the sleeve body (31).

4. The plug connector according to claim 3, wherein: The operating member (4) includes a connecting ring (41) and a connecting rod (42), the rear end of the connecting rod (42) being fixedly connected to the connecting ring (41), and the unlocking sliding sleeve (3) further includes a connecting portion (34) located outside the rear end of the sliding sleeve body (31), and the front end of the connecting rod (42) being fixedly connected to the connecting portion (34).

5. The plug connector according to claim 3, wherein: The unlocking sleeve (3) comprises a sleeve body (31) and a connecting portion (34) located at the rear of the sleeve body (31) and protruding outwards, wherein the outer contour of the connecting portion (34) is larger than the outer contour of the force unloading member (6), and the transmission portion (35) protrudes inwards relative to the sleeve body (31).

6. The plug connector according to claim 1 or 2, wherein: A limiting ring (5) is fixedly arranged on the plug body (1), and the front side surface of the limiting ring (5) constitutes a second limiting structure.

7. The plug connector according to claim 1 or 2, wherein: The front end of the elastic hook (2) is provided with a first inclined surface (23) for guiding during the plug-in mating process of the plug connector and the socket connector (8), and the unlocking portion is provided with a second inclined surface (33) for slidingly mating with the first inclined surface (23).

8. The plug connector according to claim 1 or 2, wherein: The elastic hook (2) comprises a spring body (21) and a hook body (22) located at the front end of the spring body (21); the rear end of the spring body (21) is fixedly connected to the plug body (1).

9. The plug connector according to claim 8, wherein: An outwardly protruding mounting portion (101) is provided at a central position of the plug body (1), the rear end of the spring body (21) is fixedly connected to the outer peripheral surface of the mounting portion (101), the rear side surface of the mounting portion (101) constitutes a first limiting structure, or an isolation ring is installed on the rear side of the mounting portion (101), and the rear side surface of the isolation ring constitutes the first limiting structure.

10. The plug connector according to claim 9, wherein: The rear end of the elastic hook (2) is provided with at least two connecting bolts (10) arranged front and back, and the connecting bolts (10) are threadedly assembled on the mounting portion (101).

11. The plug connector according to claim 1 or 2, wherein: A long accommodating hole (32) corresponding to the elastic hook (2) is provided on the side wall of the unlocking sleeve (3). The length direction of the long accommodating hole (32) is in the same direction as the front-back direction. The elastic hook (2) is located in the long accommodating hole (32). The front side hole wall of the long accommodating hole (32) constitutes the unlocking portion.

12. The plug connector according to claim 11, wherein: The plug body (1) is a cylindrical structure, the unlocking sleeve (3) is a cylindrical structure, the width of the elastic hook (2) is adapted to the width of the accommodating long hole (32), and the elastic hook (2) constitutes a rotation limiting member for limiting the unlocking sleeve (3) in the circumferential direction so as to prevent the plug body (1) and the unlocking sleeve (3) from rotating.

13. The plug connector according to claim 1 or 2, wherein: The elastic member is a coil spring (7) or a corrugated spring.

14. The plug connector according to claim 1 or 2, wherein: The elastic member is an elastic rubber member.

15. The plug connector according to claim 1 or 2, wherein: A guiding cone (37) is provided on the inner side of the front end of the unlocking sleeve (3) for guiding the plug connector and the socket connector (8) when they are plugged into each other.

16. The plug connector according to claim 15, wherein: A convex ring (36) protruding outward is provided at the front end of the unlocking sliding sleeve (3), and a guiding conical surface (37) is provided on the inner side of the convex ring (36).

17. The plug connector according to claim 1 or 2, wherein: The front end of the unlocking sliding sleeve (3) is formed with a groove (38) for indicating the posture of the plug connector.

18. A connector assembly comprising a plug connector and a socket connector (8), characterized in that: The plug connector is the plug connector according to any one of claims 1 to 17.

Images