Secondary lock connector

Abstract

The utility model discloses a secondary lock connector relates to electric connector technical field, wherein, secondary lock connector includes plug, pull rod and lock piece, and plug includes first limit portion and second limit portion, and second limit portion is located between two first limit portions in the first direction, pull rod rotates and is installed in plug, and pull rod rotates to first locking position, is used for installing plug limit in socket, and first limit portion cooperates with first cooperation portion, and pull rod rotates to first unlocking position and is used for cancelling the limitation to plug, lock piece rotates and is installed in the installation cavity, has second unlocking position and second locking position on the rotation stroke, and pull rod is located in first locking position and lock piece is located in second locking position, and the portion of lock piece is opposite in second direction with second limit portion, to limit pull rod rotation, and pull rod is located in first locking position and lock piece is located in second unlocking position, and lock piece is in second direction with second limit portion misalignment, to avoid the rotation of pull rod.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and in particular to a secondary locking connector. Background Technology

[0002] In the field of industrial connectors, stability and reliability are important indicators for measuring connector performance.

[0003] To prevent the plug and socket from separating after they are plugged in, existing connector assemblies generally have a limiting structure. However, due to accidental contact or collision, the limiting structure may fail and lose its function of preventing the plug and socket from separating, resulting in insufficient stability of the plug and socket connection. Utility Model Content

[0004] The main purpose of this invention is to propose a secondary locking connector, which aims to improve the stability of plug and socket connection.

[0005] To achieve the above objectives, the present invention proposes a secondary locking connector, comprising: a plug, a pull rod, and a locking plate; the plug is provided with first limiting portions on both sides in a first direction, and the plug further includes a second limiting portion, the second limiting portion being located between the two first limiting portions in the first direction; the pull rod has extension portions located on both sides of the plug in the first direction, and a connecting portion located between and fixedly connected to the two extension portions, the connecting portion being provided with a mounting cavity, the extension portion being provided with a first mating portion, the pull rod being rotatably mounted to the plug, and having a first unlocking position and a first locking position on the rotation stroke of the pull rod; when the pull rod rotates to the first locking position, it is used to limit the plug to be mounted in the socket, and the first limiting portion cooperates with the first mating portion, and the locking plate... The mounting cavity and the second limiting part are disposed opposite to each other in the second direction. The pull rod is rotated to the first unlocking position to release the restriction on the plug. The locking piece is rotatably installed in the mounting cavity. The pull rod is located in the first locking position such that the connecting part and the plug are opposite to each other in the second direction, and the second limiting part extends into the mounting cavity. The locking piece has a second unlocking position and a second locking position in its rotation stroke. The pull rod is located in the first locking position and the locking piece is located in the second locking position. A portion of the locking piece is opposite to the second limiting part in the second direction to restrict the rotation of the pull rod. The pull rod is located in the first locking position and the locking piece is located in the second unlocking position. The locking piece is misaligned with the second limiting part in the second direction to avoid the rotation of the pull rod.

[0006] In one embodiment, the first mating part includes a mating hole, and the first limiting part includes a limiting protrusion; In the first direction, the distance between the two opposite end faces of the two limiting protrusions is greater than the distance between the two opposite end faces of the two extensions, and the extensions are elastically configured.

[0007] In one embodiment, the limiting protrusion is movable relative to the mating hole, and a first chamfer is provided on both sides of the moving path extension direction.

[0008] In one embodiment, the mounting cavity is provided with an insertion port for a portion of the second limiting portion to be inserted into the mounting cavity; The second limiting portion includes a first extension section and a second extension section. The first extension section extends in a second direction, and the second extension section is disposed at the end of the first extension section near the pull rod and extends in a third direction. The second extension section is used to insert into the mounting cavity and to abut against the locking piece in the second direction.

[0009] In one embodiment, one end of the second extension is connected to the end of the first extension, and the other end of the second extension is provided with a second chamfer.

[0010] In one embodiment, the locking piece includes a main body portion, the main body portion having a notch and a limiting plate located on one side of the notch, the side wall of the mounting cavity away from the plug being a first side wall, and the limiting plate being spaced apart from the first side wall; When the locking plate rotates to the second locking position, the limiting plate is positioned directly opposite the second extension in the second direction, and the second extension is held in place by the first sidewall and the limiting plate in the second direction. When the locking plate rotates to the second unlocking position, the limiting plate is misaligned with the second extension in the second direction.

[0011] In one embodiment, the limiting plate has a third chamfer on the side near the notch.

[0012] In one embodiment, the side wall of the mounting cavity away from the plug is a second side wall. The second side wall is provided with a first positioning hole and a second positioning hole. The side of the locking plate facing the second side wall is provided with a positioning protrusion. During the rotation stroke of the locking plate, when the locking plate rotates to the second locking position, the positioning protrusion engages with the first positioning hole. When the locking plate rotates to the second unlocking position, the positioning protrusion engages with the second positioning hole.

[0013] In one embodiment, the locking plate includes a main body and a cantilever, one end of the cantilever is connected to the main body, and the other end of the cantilever is provided with the positioning protrusion. The cantilever is elastically configured.

[0014] In one embodiment, the locking plate further includes an operating portion located on the main body and extending outside the mounting cavity.

[0015] The technical solution of this utility model is a pull rod rotatably mounted on a plug. The pull rod has a first unlocking position and a first locking position during its rotational stroke. Before the plug and socket are connected, the pull rod is in the first unlocking position. After the plug and socket are connected, the pull rod rotates to the first locking position to restrict the separation of the plug and socket. To enable the pull rod to effectively restrict the separation of the plug and socket, it needs to be limited to the first locking position. Since existing technologies only have one layer of limiting structure for the pull rod, the stability is insufficient. Therefore, the technical solution of this utility model has two layers of limiting structure. Specifically: when the pull rod rotates to the first locking position, the first limiting part cooperates with the first mating part to restrict the rotation of the pull rod. And when the pull rod is in the first locking position, by rotating the locking plate, the locking plate abuts against the second limiting part in the second direction, thereby restricting the rotation of the pull rod. When it is necessary to separate the plug and socket, the locking plate is first rotated to the second unlocking position, causing the locking plate and the second limiting part to be misaligned in the second direction, releasing the limiting effect of the second limiting part on the locking plate. Then, the first limiting part is disengaged from the first mating part, so that the pull rod can be rotated to the first unlocking position, and then the plug can be pulled out of the socket. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 An exploded view of an embodiment of the secondary lock connector provided by this utility model; Figure 2 for Figure 1 An exploded view of the secondary lock connector from another perspective; Figure 3 for Figure 1 A schematic diagram of the pull rod of the secondary locking connector at the first locking position; Figure 4 for Figure 1 A schematic diagram of the pull rod of the secondary lock connector at the first unlocking position; Figure 5 for Figure 3 A full cross-sectional view of the locking plate of the secondary lock connector at the second unlock position and at position AA; Figure 6 for Figure 3 A full sectional view of the locking plate of the secondary lock connector in the second unlock position and at position AA.

[0018] Explanation of icon numbers: 100. Secondary lock connector; 1. Plug; 11. First limiting part; 111. Limiting protrusion; 1111. First chamfer; 12. Second limiting part; 121. First extension section; 122. Second extension section; 1221. Second chamfer; 2. Pull rod; 21. Extension part; 211. First mating part; 2111. Mating hole; 22. Connecting part; 221. Mounting cavity; 2211. Insertion port; 2212. First side wall; 2213. Second side wall; 22131. First positioning hole; 22132. Second positioning hole; 3. Locking plate; 31. Main body; 311. Notch; 312. Limiting plate; 3121. Third chamfer; 32. Cantilever; 33. Positioning protrusion; 34. Operating part.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] To prevent the plug and socket from separating after they are plugged in, existing connector assemblies generally have a limiting structure. However, due to accidental contact or collision, the limiting structure may fail and lose its function of preventing the plug and socket from separating, resulting in insufficient stability of the plug and socket connection.

[0024] This utility model proposes a secondary locking connector.

[0025] Please see Figures 1 to 4In one embodiment of this utility model, the secondary lock connector 100 includes: a plug 1, a pull rod 2, and a locking plate 3; the plug 1 is provided with first limiting portions 11 on both sides in a first direction, and the plug 1 also includes second limiting portions 12, which are located between the two first limiting portions 11 in the first direction; the pull rod 2 has extension portions 21 located on both sides of the plug 1 in the first direction, and a connecting portion 22 located between the two extension portions 21 and fixedly connected to the two extension portions 21, the connecting portion 22 is provided with a mounting cavity 221, the extension portion 21 is provided with a first mating portion 211, the pull rod 2 is rotatably mounted on the plug 1, and has a first unlocking position and a first locking position on the rotation stroke of the pull rod 2. When the pull rod 2 rotates to the first locking position, it is used to limit the plug 1 to be installed in the socket, and the first limiting portion 11 cooperates with the first mating portion 211. The mounting cavity 221 and the second limiting part 12 are disposed opposite to each other in the second direction. The pull rod 2 is rotated to the first unlocking position to release the restriction on the plug 1. The locking piece 3 is rotatably installed in the mounting cavity 221. The pull rod 2 is located in the first locking position such that the connecting part 22 is opposite to the plug 1 in the second direction, and the second limiting part 12 extends into the mounting cavity 221. The locking piece 3 has a second unlocking position and a second locking position in its rotation stroke. The pull rod 2 is located in the first locking position and the locking piece 3 is located in the second locking position. A portion of the locking piece 3 is opposite to the second limiting part 12 in the second direction to restrict the rotation of the pull rod 2. The pull rod 2 is located in the first locking position and the locking piece 3 is located in the second unlocking position. The locking piece 3 is misaligned with the second limiting part 12 in the second direction to avoid the rotation of the pull rod 2.

[0026] In this invention, the pull rod 2 is rotatably mounted on the plug 1. The pull rod 2 has a first unlocking position and a first locking position during its rotational stroke. Before the plug 1 is connected to the socket, the pull rod 2 is in the first unlocking position. After the plug 1 is connected to the socket, the pull rod 2 rotates to the first locking position to restrict the separation of the plug 1 and the socket. To enable the pull rod 2 to effectively restrict the separation of the plug 1 and the socket, it needs to be limited to the first locking position. Since existing technologies only have one layer of limiting structure for the pull rod 2, its stability is insufficient. Therefore, this invention provides a two-layer limiting structure: specifically, when the pull rod 2 rotates to the first locking position, the first limiting part 11 engages with the first mating part 211 to restrict the rotation of the pull rod 2. And when the pull rod 2 is in the first locking position, by rotating the locking plate 3, the locking plate 3 abuts against the second limiting part 12 in the second direction, thereby restricting the rotation of the pull rod 2. When it is necessary to separate the plug 1 from the socket, first rotate the locking piece 3 to the second unlocking position, so that the locking piece 3 and the second limiting part 12 are misaligned in the second direction, thereby releasing the limiting effect of the second limiting part 12 on the locking piece 3. Then, disengage the first limiting part 11 from the first mating part 211, so that the pull rod 2 can be rotated to the first unlocking position, and then the plug 1 can be pulled out of the socket.

[0027] In a specific embodiment where the first limiting part 11 mates with the first mating part 211, please refer to... Figure 4 The first mating part 211 includes a mating hole 2111, and the first limiting part 11 includes a limiting protrusion 111. In the first direction, the distance between the two opposite end faces of the two limiting protrusions 111 is greater than the distance between the two opposite end faces of the two extensions 21, and the extensions 21 are elastically configured. When the pull rod 2 is rotated from the first unlocking position to the first locking position, the limiting protrusions 111 abut against the two side walls of the plug 1 in the first direction, restricting the rotation of the pull rod 2. At this time, a greater external force needs to be applied to deform the extensions 21, so that the distance between the two limiting protrusions 111 is greater than or equal to the size of the plug 1 in the first direction. When rotated to the first locking position, the limiting protrusions 111 correspond to the mating hole 2111, and the extensions 21 restore their deformation, so that the limiting protrusions 111 are located in the mating hole 2111. Under the intervention of a smaller external force, the pull rod 2 cannot rotate. Thus, the first layer of limiting effect on the pull rod 2 is achieved.

[0028] To facilitate the entry and exit of the limiting protrusion 111 into the mating hole 2111, please refer to [link / reference needed]. Figure 4The limiting protrusion 111 is movable relative to the mating hole 2111, and first chamfers 1111 are provided on both sides of the moving path extension direction. When the limiting protrusion 111 retracts from the mating hole 2111, the edge of the mating hole 2111 first abuts against the chamfered part of the limiting protrusion 111. During rotation, the deformation of the extension 21 gradually increases, and the first chamfers 1111 play a transition and guiding role.

[0029] For the specific structure of the second limiting part 12, please refer to one embodiment. Figures 4 to 6 Since the connecting part 22 is close to the plug 1 and opposite to it in the second direction when it is in the first locking position, in order to prevent the pull rod 2 from rotating, it is necessary to restrict the pull rod 2 in the tangential direction of rotation, that is, in the second direction (away from the plug 1). Since the locking plate 3 is installed on the pull rod 2, the locking plate 3 and the pull rod 2 can be regarded as a whole. The second limiting part 12 abuts against the locking plate 3 in the second direction (away from the plug 1 side), which can restrict the rotation of the pull rod 2. Since the locking piece 3 is installed in the mounting cavity 221, the second limiting part 12 needs to be able to extend into the mounting cavity 221: the mounting cavity 221 is provided with an insertion port 2211 for a portion of the second limiting part 12 to be inserted into the mounting cavity 221; the second limiting part 12 includes a first extension section 121 and a second extension section 122, the first extension section 121 extends along a second direction, the second extension section 122 is disposed at the end of the first extension section 121 near the pull rod 2 and extends along a third direction, the second extension section 122 is used to insert into the mounting cavity 221 and to abut against the locking piece 3 in the second direction.

[0030] Since the second limiting part 12 is fixed by the designer, in order to prevent the second limiting part 12 from interfering with the rotation of the pull rod 2 and to avoid the normal rotation of the pull rod 2, in one embodiment, one end of the second extension section 122 is connected to the end of the first extension section 121, and the other end of the second extension section 122 is provided with a second chamfer 1221. The second chamfer 1221 serves to avoid interference.

[0031] To achieve the locking and unlocking functions of the locking piece 3, the locking piece 3 includes a main body 31, which has a notch 311 and a limiting plate 312 located on one side of the notch 311. The side wall of the mounting cavity away from the plug 1 is a first side wall 2212, and the limiting plate 312 is spaced apart from the first side wall 2212. When the locking piece 3 is rotated to the second locking position, the limiting plate 312 is positioned directly opposite the second extension 122 in the second direction, and the second extension 122 is held in place by the first side wall and the limiting plate 312 in the second direction. When the locking piece 3 is rotated to the second unlocking position, the limiting plate 312 is misaligned with the second extension 122 in the second direction.

[0032] The limiting plate 312 has a third chamfer 3121 on the side near the notch 311. Please refer to [link / reference]. Figure 1 It serves the same purpose as the first chamfer 1111, acting as a transition to ensure smooth rotation and prevent jamming.

[0033] Since the second extension segment 122 is stuck between the first sidewall and the limiting plate 312 in the second locked position, the second extension segment 122 cannot be withdrawn from the mounting cavity 221, which also means that the second extension segment 122 cannot enter the mounting cavity 221. In order to make the locking plate 3 be in the second unlocked position before locking, so that the second extension segment 122 can enter the mounting cavity 221, and to be in the second locked position and maintain it when locking, the side wall of the mounting cavity away from the plug 1 is the second sidewall 2213. The second sidewall 2213 is provided with a first positioning hole 22131 and a second positioning hole 22132. The locking plate 3 is provided with a positioning protrusion 33 on the side facing the second sidewall 2213. During the rotation stroke of the locking plate 3, when the locking plate 3 rotates to the second locked position, the positioning protrusion 33 cooperates with the first positioning hole 22131. When the locking plate 3 rotates to the second unlocked position, the positioning protrusion 33 cooperates with the second positioning hole 22132.

[0034] The specific configuration of the positioning protrusion 33 is as follows: The locking plate 3 includes a main body 31 and a cantilever 32. One end of the cantilever 32 is connected to the main body 31, and the other end of the cantilever 32 is provided with the positioning protrusion 33. The cantilever 32 is elastically configured. When the positioning protrusion 33 is located in the first positioning hole 22131, rotating the locking plate 3 causes the cantilever 32 to deform, and the positioning protrusion 33 exits from the first positioning hole 22131, rotates to the second positioning hole 22132, and enters the second positioning hole 22132. The same applies when the positioning protrusion 33 enters the first positioning hole 22131 from the second positioning hole 22132.

[0035] To facilitate the rotation of the locking plate 3 and the switching between the second locked position and the second unlocked position, the locking plate 3 also includes an operating part 34, which is located on the main body 31 and extends outside the mounting cavity 221.

[0036] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A secondary locking connector, characterized in that, include: The plug has a first limiting part provided on both sides in a first direction, and the plug also includes a second limiting part, which is located between the two first limiting parts in the first direction. A pull rod has extensions located on both sides of the plug in a first direction, and a connecting portion located between and fixedly connected to the two extensions. The connecting portion is provided with a mounting cavity, and the extensions are provided with a first mating portion. The pull rod is rotatably mounted on the plug. The pull rod has a first unlocking position and a first locking position during its rotation stroke. When the pull rod is rotated to the first locking position, it is used to limit the plug to be installed in the socket, and the first limiting portion cooperates with the first mating portion. The mounting cavity and the second limiting portion are disposed opposite to each other in a second direction. When the pull rod is rotated to the first unlocking position, it is used to release the restriction on the plug. A locking plate is rotatably mounted in the mounting cavity. The pull rod is located in the first locking position such that the connecting part and the plug are opposite each other in the second direction, and the second limiting part extends into the mounting cavity. The locking plate has a second unlocking position and a second locking position during its rotational stroke. The pull rod is located in the first locking position and the locking plate is located in the second locking position. A portion of the locking plate is opposite to the second limiting part in the second direction to restrict the rotation of the pull rod. The pull rod is located in the first locking position and the locking plate is located in the second unlocking position. The locking plate is offset from the second limiting part in the second direction to avoid the rotation of the pull rod.

2. The secondary locking connector as described in claim 1, characterized in that, The first mating part includes a mating hole, and the first limiting part includes a limiting protrusion; In the first direction, the distance between the two opposite end faces of the two limiting protrusions is greater than the distance between the two opposite end faces of the two extensions, and the extensions are elastically configured.

3. The secondary locking connector as described in claim 2, characterized in that, The limiting protrusion is movable relative to the mating hole, and a first chamfer is provided on both sides of the moving path extension direction.

4. The secondary locking connector as described in claim 1, characterized in that, The mounting cavity is provided with an insertion port for inserting a portion of the second limiting part into the mounting cavity; The second limiting portion includes a first extension section and a second extension section. The first extension section extends in a second direction, and the second extension section is disposed at the end of the first extension section near the pull rod and extends in a third direction. The second extension section is used to insert into the mounting cavity and to abut against the locking piece in the second direction.

5. The secondary locking connector as described in claim 4, characterized in that, One end of the second extension is connected to the end of the first extension, and the other end of the second extension is provided with a second chamfer.

6. The secondary locking connector as described in claim 5, characterized in that, The locking piece includes a main body, the main body is provided with a notch and a limiting plate located on one side of the notch, the side wall of the mounting cavity away from the plug is a first side wall, and the limiting plate is spaced apart from the first side wall; When the locking plate rotates to the second locking position, the limiting plate is positioned directly opposite the second extension in the second direction, and the second extension is held in place by the first sidewall and the limiting plate in the second direction. When the locking plate rotates to the second unlocking position, the limiting plate is misaligned with the second extension in the second direction.

7. The secondary locking connector as described in claim 6, characterized in that, The limiting plate has a third chamfer on the side near the notch.

8. The secondary locking connector as described in claim 4, characterized in that, The side wall of the mounting cavity away from the plug is a second side wall. The second side wall is provided with a first positioning hole and a second positioning hole. The side of the locking plate facing the second side wall is provided with a positioning protrusion. During the rotation stroke of the locking plate, when the locking plate rotates to the second locking position, the positioning protrusion cooperates with the first positioning hole. When the locking plate rotates to the second unlocking position, the positioning protrusion cooperates with the second positioning hole.

9. The secondary locking connector as described in claim 8, characterized in that, The locking plate includes a main body and a cantilever. One end of the cantilever is connected to the main body, and the other end of the cantilever is provided with the positioning protrusion. The cantilever is elastically configured.

10. The secondary locking connector as described in claim 6, characterized in that, The locking plate also includes an operating part, which is located on the main body and extends outside the mounting cavity.

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