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 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 is installed in the installation cavity slidingly, 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 part 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 each other in the second direction. The pull rod rotates to the first unlocking position to release the restriction on the plug. The locking piece is slidably 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 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 sliding 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, which is slidably mounted in the mounting cavity along a third direction. The side wall of the mounting cavity away from the plug is a first side wall, and the main body portion is spaced apart from the first side wall. When the locking piece slides to the second locking position, the main body 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 main body in the second direction. When the locking piece slides to the second unlocking position, the main body and the second extension are misaligned in the second direction.

[0011] In one embodiment, the locking plate further includes an operating portion connected to the main body and extending outside the mounting cavity.

[0012] In one embodiment, the first sidewall is provided with a positioning hole, and the operating part is provided with a positioning protrusion. During the sliding stroke of the locking piece, when the locking piece rotates to the second locking position, the positioning protrusion cooperates with the positioning hole, the locking piece slides to the second unlocking position, and the positioning protrusion slides to the outside of the mounting cavity.

[0013] In one embodiment, the operating unit includes a cantilever that is elastically configured.

[0014] In one embodiment, the locking piece has a first stop portion and a second stop portion spaced apart in a third direction. The mounting cavity has a first stop surface and a second stop surface, which are disposed between the first stop portion and the second stop portion. The first stop surface faces the first stop portion in a third direction to restrict the first stop portion from sliding in a third direction, and the second stop surface faces the second stop portion in a third direction to restrict the second stop portion from sliding in a third direction.

[0015] The technical solution of this utility model is a pull rod rotatably mounted on a plug. The pull rod has a first unlocked position and a first locked position during its rotational stroke. Before the plug and socket are connected, the pull rod is in the first unlocked position. After the plug and socket are connected, the pull rod rotates to the first locked 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 locked 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 locked 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 locked position, a sliding locking plate abuts against the second limiting part in a 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 slid to the second unlocked position, causing the locking plate to be misaligned with the second limiting part in a 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 structure of the pull rod of the secondary lock connector in the first locking position and the lock plate in the second unlocking position; Figure 4 for Figure 3 Partial sectional view of the pull rod of the secondary lock connector; Figure 5 for Figure 4 Full sectional view of the tie rod at position AA; Figure 6 for Figure 1 A schematic diagram of the locking plate structure of the secondary locking connector; Figure 7 for Figure 1 A full sectional view of the pull rod of the secondary lock connector in the first locking position and the locking plate in the second locking position; Figure 8 for Figure 1 A full sectional view of the pull rod of the secondary lock connector in the first locking position and the locking plate in the second unlocking position.

[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. Positioning hole; 3. Locking plate; 31. Main body; 32. Operating part; 321. Cantilever; 33. Positioning protrusion; 34. First stop part; 35. Second stop 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 3In 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 rotates to the first unlocking position to release the restriction on the plug 1. The locking piece 3 is slidably 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 sliding 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 unlocked position and a first locked position during its rotational stroke. Before the plug 1 is connected to the socket, the pull rod 2 is in the first unlocked position. After the plug 1 is connected to the socket, the pull rod 2 rotates to the first locked 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 locked 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 locked 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 locked position, the sliding locking piece 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 slide 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 restriction 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 2 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, a first chamfer 1111 is provided on both sides of the limiting protrusion 111 relative to the mating hole 2111 and on both sides of the direction of the movement path. When the limiting protrusion 111 exits 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 chamfer 1111 plays a transition and guiding role.

[0029] For the specific structure of the second limiting part 12, please refer to Figure 2 , Figure 7 , Figure 8 In one embodiment, since the connecting part 22 is close to the plug 1 and opposite to it in the second direction when 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 direction). Since the locking piece 3 is installed on the pull rod 2, the locking piece 3 and the pull rod 2 can be regarded as a whole. The second limiting part 12 abuts against the locking piece 3 in the second direction (away from the plug 1 side), thereby restricting 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 enable the locking and unlocking functions of lock plate 3, please refer to [link / reference]. Figure 6The locking piece 3 includes a main body 31, which is slidably installed in the mounting cavity 221 along a third direction. The side wall of the mounting cavity away from the plug 1 is a first side wall 2212, and the main body 31 is spaced apart from the first side wall 2212. When the locking piece 3 slides to the second locking position, the main body 31 is directly opposite the second extension 122 in the second direction, and the second extension 122 is held by the first side wall 2212 and the main body 31 in the second direction. When the locking piece 3 slides to the second unlocking position, the main body 31 and the second extension 122 are misaligned in the second direction.

[0032] To facilitate sliding of the locking plate 3, the locking plate 3 also includes an operating part 32, which is connected to the main body 31 and extends outside the mounting cavity 221. The locking plate 3 is slidable by operating the operating part 32.

[0033] To ensure the locking plate 3 remains stable in the second locking position and does not disengage under the influence of gravity or vibration, a positioning hole 2213 is provided on the first sidewall 2212, and a positioning protrusion 33 is provided on the operating part 32. During the sliding stroke of the locking plate 3, when the locking plate 3 rotates to the second locking position, the positioning protrusion 33 engages with the positioning hole 2213. When the locking plate 3 slides to the second unlocking position, the positioning protrusion 33 slides to the outside of the mounting cavity 221.

[0034] Because the positioning protrusion 33 is obstructed by the first sidewall 2212 between it and the positioning hole 2213, and to allow the positioning protrusion 33 to enter the positioning hole 2213 under the restriction of the positioning hole 2213, the operating part 32 includes a cantilever 321, which is elastically configured. By pressing the cantilever 321, the positioning protrusion 33 is misaligned with the first sidewall 2212 in the second direction, the locking piece 3 slides to the second locking position, and the cantilever 321 is released, allowing the positioning protrusion 33 to enter the positioning hole 2213. By first pressing the cantilever 321 and holding it while sliding the locking piece 3, the position of the locking piece 3 can be changed.

[0035] To prevent the locking piece 3 from being lost and to protect it, the locking piece 3 is fixedly installed within the mounting cavity 221 to prevent it from being pulled out. For details, please refer to [link to relevant documentation]. Figure 4 , Figure 5 , Figure 6The locking piece 3 has a first stop portion 34 and a second stop portion 35 spaced apart in a third direction. The mounting cavity 221 has a first stop surface and a second stop surface, which are disposed between the first stop portion 34 and the second stop portion 35. The first stop surface faces the first stop portion 34 in the third direction to restrict the first stop portion 34 from sliding in the third direction, and the second stop surface faces the second stop portion 35 in the third direction to restrict the second stop portion 35 from sliding in the third direction. The third direction has two orientations: when the first stop surface abuts against the first stop portion 34, the locking piece 3 moves to the limit position of the first orientation; when the second stop surface abuts against the second stop portion 35, the locking piece 3 moves to the limit position of the second orientation.

[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 slidably 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 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 sliding 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, which is slidably mounted in the mounting cavity along a third direction. The side wall of the mounting cavity away from the plug is a first side wall, and the main body is spaced apart from the first side wall. When the locking piece slides to the second locking position, the main body 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 main body in the second direction. When the locking piece slides to the second unlocking position, the main body and the second extension are misaligned in the second direction.

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

8. The secondary locking connector as described in claim 7, characterized in that, The first sidewall is provided with a positioning hole, and the operating part is provided with a positioning protrusion. During the sliding stroke of the locking piece, when the locking piece rotates to the second locking position, the positioning protrusion cooperates with the positioning hole, the locking piece slides to the second unlocking position, and the positioning protrusion slides to the outside of the mounting cavity.

9. The secondary locking connector as described in claim 8, characterized in that, The operating unit includes a cantilever, which is elastically configured.

10. The secondary locking connector as described in claim 6, characterized in that, The locking piece has a first stop portion and a second stop portion spaced apart in a third direction. The mounting cavity has a first stop surface and a second stop surface. The first stop surface and the second stop surface are disposed between the first stop portion and the second stop portion. The first stop surface faces the first stop portion in a third direction to restrict the first stop portion from sliding in a third direction. The second stop surface faces the second stop portion in a third direction to restrict the second stop portion from sliding in a third direction.

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