A connection unit with a holding structure

Abstract

The present invention discloses a connection unit with a retaining structure, the connection unit includes a connection piece and a plug-in coupled thereto, the connection piece is used to conduct a circuit after being connected to the plug-in, the connection piece is detachably provided with a retaining piece, the retaining piece is used to stabilize the connection strength between the connection piece and the plug-in; one end of the retaining piece is connected to the plug-in for limiting position, the connection piece is also provided with a locking piece, the locking piece is movably provided on the connection piece, and the locking piece can be pre-installed on the connection piece and can also limit the retaining piece to prevent its connection from loosening. The present invention effectively enhances the connection strength between the connection piece and the plug-in by detachably providing the retaining piece on the connection piece and utilizing the close fit between the retaining piece and the plug-in. The interference fit between the clamping part on the retaining piece and the connection part, as well as the interaction between the limiting arm and the plug-in, together constitute a stable connection structure, which significantly improves the vibration and impact resistance of the connection.

Description

Technical Field

[0001] The present invention relates to the technical field of connecting devices, and in particular to a connecting unit with a retaining structure. Background Art

[0002] In electronic equipment and systems, the connection unit is a key component for circuit conduction. The stability and reliability of its connection directly affect the performance and safety of the entire system. Traditional connection units often use a simple plug-in structure. Although it is easy to install and replace, it is easy to have loose connections or even fall off under complex working conditions such as vibration and impact, resulting in circuit interruption and affecting the normal operation of the equipment. In addition, existing connection units often lack an effective locking mechanism when disassembling and reassembling, which increases the risk of falling off, thereby affecting the overall connection effect. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In order to solve the above problems, the present invention proposes a connection unit with a retaining structure, aiming to solve the problem in the prior art that the connector is prone to loose connection or even falling off under complex working conditions such as vibration and impact.

[0005] (II) Technical solution

[0006] A connection unit with a holding structure according to the present invention comprises:

[0007] A connector and a plug-in coupled thereto, wherein the connector and the plug-in are connected to conduct a circuit, and a retaining member is detachably provided on the connector, and the retaining member is used to stabilize the connection strength between the connector and the plug-in;

[0008] One end of the retaining member is connected to the plug-in member for limiting position, and a locking member is also provided on the connecting member. The locking member is movably arranged on the connecting member, and the locking member can be pre-installed on the connecting member and can also limit the retaining member to prevent its connection from loosening.

[0009] In the present invention, a connecting part is provided on the connecting member, a snap-fitting part cooperating with the connecting part is provided at the bottom of the retaining member, and a pressing part is provided at the end of the retaining member. The retaining member and the plug-in unit can be separated by applying force at the top of the pressing part.

[0010] In the present invention, the locking member is provided with a lock head for limiting the position of the retaining member, one end of the lock head is connected to the locking member, and the lock head is arranged at the top of the locking member. When the locking member needs to be used to limit the retaining member, the lock head is located at the bottom of the retaining member;

[0011] A limiting plate is provided below the lock head, a gap is provided between the limiting plate and the lock head, and a lock buckle is provided at the end of the lock head, and an empty groove matched with the lock buckle is provided on the retaining member.

[0012] In the present invention, a slide groove and at least one protrusion are provided on both sides of the connecting member, and buckles cooperating with the slide groove are provided on both sides of the locking member. The buckles are inserted into the slide groove to achieve assembly and gear adjustment through the protrusion.

[0013] In the present invention, the slide groove is composed of two L-shaped side walls, a gap is provided between the two side walls, and the outer side of the buckle is provided with a limiting wall located in the gap, and the limiting wall is used to increase the sliding stability of the buckle.

[0014] In the present invention, the connecting portion has a connecting cavity with an opening on one side, and the clamping portion is assembled with the connecting portion by being inserted into the connecting cavity;

[0015] The clamping part is integrally bent and formed, and a clamping block for increasing the connection strength is further provided at the end of the clamping part, a protrusion for longitudinal limiting is provided on the clamping block, and the clamping part is interference-fitted in the connecting cavity through the protrusion and the clamping block.

[0016] In the present invention, the other end of the pressing portion of the retaining member is provided with a limiting portion, the end of the limiting portion is provided with a limiting arm bent downward, and the counter-insertion device is provided with the limiting arm.

[0017] In the present invention, the connector includes a cavity and a terminal disposed in the cavity, the locking member is provided with a convex column that can be inserted into the cavity, and when the lock head is located below the retaining member, the convex column presses against one side of the terminal to prevent it from retreating.

[0018] In the present invention, both sides of the lock head are further provided with limiting convex walls for further locking the retaining member, and the fiber convex wall and the locking member are an integrated structure.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the present invention, by detachably setting a retaining member on the connecting member, the close fit between the retaining member and the plug-in is utilized to effectively enhance the connection strength between the connecting member and the plug-in. The interference fit between the clamping part on the retaining member and the connecting part, as well as the interaction between the limiting arm and the plug-in, together constitute a stable connection structure, significantly improving the vibration and impact resistance of the connection.

[0022] The present invention introduces a locking member, the locking head on which cooperates with the empty groove on the retaining member to limit the retaining member and prevent the connection from loosening. At the same time, when the locking head is located below the retaining member, the convex column on the locking member can support one side of the terminal to prevent the terminal from retreating due to external force, further enhancing the stability of the connection. This double locking mechanism provides a more reliable locking guarantee for the connection unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the exploded structure of the connecting unit in Example 1;

[0025] Figure 2 This is a schematic diagram of the overall assembly structure of the connection unit in Example 1;

[0026] Figure 3 is a schematic diagram of the three-dimensional structure of the connecting piece;

[0027] Figure 4 is a schematic diagram of the three-dimensional structure of the retaining member;

[0028] Figure 5 A schematic diagram of the connection structure between the retaining member and the connecting member;

[0029] Figure 6 A reference diagram for the use of the retaining member;

[0030] Figure 7 is a schematic diagram of the three-dimensional structure of the locking member;

[0031] Figure 8 is a schematic diagram of the cross-sectional structure of the locking member at the cross-sectional line A;

[0032] Fig. 9 is a schematic diagram of the three-dimensional structure of the connecting piece;

[0033] Fig.10 It is a schematic diagram of the exploded structure of the terminal and the locking member in Example 1;

[0034] Fig.11 is a schematic diagram of the internal structure of the connecting member in Example 1;

[0035] Fig.12 This is a schematic diagram of the exploded structure of the connecting unit in Example 2;

[0036] Fig.13 is a schematic diagram of the three-dimensional structure of the locking member in Example 2;

[0037] Fig.14 This is a schematic diagram of the cross-sectional structure of the connecting member at section line B in Example 2.

[0038] 10. Connecting member, 11. Connecting portion, 111. Connecting cavity, 112. Sliding groove, 12. First protrusion, 13. Second protrusion, 14. First groove, 15. Second groove, 16. Receiving cavity, 17. Terminal;

[0039] 20. retaining member, 21. limiting portion, 211. limiting arm, 212. reinforcing rib, 22. pressing portion, 221. pressing block, 23. engaging portion, 231. clamping block, 232. protrusion; 24. empty slot;

[0040] 30. locking member, 31. main lock body, 32. lock head, 321. fulcrum, 322. lock buckle, 323. limiting plate, 324. limiting convex wall, 33. buckle, 33‵, locking arm, 331. limiting wall, 332. guide groove, 333. locking block, 34. convex column;

[0041] 40. plug-in, 41. plug, 42. jack. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example 1

[0044] See also Figure 1-Figure 3 The connection unit of the present invention includes a connection member 10, a detachable retaining member 20 and a locking member 30 for fixing the retaining member 20. In the present embodiment, the connection unit is a connector. In addition to plug-in connectors, the retaining structure of the present invention can also be applied to any connection device that requires plug-in matching.

[0045] by Figure 1 , Figure 2As shown, the connector 10 is located in the middle, and a plug-in 40 matching with the connector 10 is provided on the front side of the connector 10. It should be noted that the plug-in 40 is a female end part that can be assembled with the connector 10 to achieve conductive connection, and it can be any unit that is assembled with the connector 10. In this embodiment, the plug-in 40 is a PCB board, and a plug 41 matching with the connector 10 is provided at the end of the PCB board, and a socket 42 matching with the retaining member 20 is also provided near the plug 41. In particular, the plug-in 40 can also be a female end plug 41 matching with the connector 10, as long as it can be plugged with the connector 10 for conductivity and has the same socket 42.

[0046] Specifically, the retaining member 20 is disposed on the top of the connecting member 10. Figure 3 The top of the connector 10 is provided with a connecting portion 11 for fitting the retaining member 20, and the connecting portion 11 has a hollow connecting cavity 111, and the rear end of the connecting cavity 111 has an opening, which is provided to facilitate the fitting and connection of the retaining member 20. The provision of the retaining member 20 improves the connection strength between the connector 10 and the plug-in 40, that is, the retaining member 20 and the jack 42 cooperate to limit the position, thereby preventing the plug-in 40 and the connector 10 from loosening due to vibration or external pulling.

[0047] The connector 10 retainer 20 of the present invention is a detachable structure, that is, the retainer 20 can be an optional accessory, and the user can have a wider range of choices. The adaptability of the retainer 20 is further improved, that is, the retainer 20 of different lengths can be replaced to adapt to the position of the socket 42.

[0048] It should be noted that in this embodiment, the retaining member 20 is assembled with the connecting cavity 111 through a snap-fit ​​portion 23 having a certain elasticity to achieve both rotatable and detachable assembly. In addition to this structure, the retaining member 20 can also be detachably assembled on the connecting member 10 by means of insertion, tightening, rotation, etc. through a connecting member 10 having a certain elasticity.

[0049] See also Figure 4 , Figure 5 As shown, the retaining member 20 has a limiting portion 21 matched with the insertion hole 42, a pressing portion 22 arranged at the end, and a clamping portion 23 arranged at the bottom and matched with the connecting portion 11, wherein the limiting portion 21 is arranged at the front end of the retaining member 20 and is arranged to be tilted downward. The left and right sides of the front end of the limiting portion 21 are provided with integrally bent limiting arms 211, and when the retaining portion is matched with the insertion hole 42, the limiting arms 211 extend into the insertion hole 42 for clamping and limiting, and the two limiting walls 331 are body-shaped sheet structures.

[0050] In order to increase the overall structural strength of the limiting portion 21 , a reinforcing rib 212 is provided on the limiting portion 21 , and one end of the reinforcing rib 212 is located at the front end of the limiting portion 21 , and the other end is provided at the connection position between the limiting portion 21 and the retaining member 20 body.

[0051] Specifically, the limiting portion 21 is arranged at the front end of the retaining member 20, that is, the limiting portion 21 is arranged on the side opposite to the pressing portion 22. The pressing portion 22 is formed by bending an integral rectangular sheet upward, and the bending angle of the rectangular sheet is greater than 90° and less than 180°, that is, the rectangular sheet is bent and located above the retaining member 20 to form a gap.

[0052] Since the volume of the main body of the retainer 20 is relatively small, in order to increase the stability of the pressing portion 22, a pressing block 221 is further provided at the end of the pressing portion 22. The pressing block 221 is also a rectangular structure, but the width of the pressing block 221 is greater than the width of the rectangular sheet. That is, the pressing block 221 and the rectangular sheet form a T-shaped structure. In order to increase the strength of the retainer 20 and increase its service life, the retainer 20 is made of metal or plastic with a certain strength, such as high-strength PE plastic, aluminum alloy, stainless steel and other polymer composite materials.

[0053] The structure of the clamping part 23 is similar to that of the pressing part 22. Both are formed by bending a rectangular sheet in one piece. However, the clamping part 23 is bent downward, and its bending angle is also greater than 90° and less than 180°. A gap is formed between its head end and its tail end, thereby forming a deformation area. That is, the function of the clamping part 23 is not only to connect but also to reset. In order to increase the connection strength between the clamping part 23 and the connecting cavity 111, a clamping block 231 is further provided at the end of the clamping part 23, and a protrusion 232 is further provided on the top surface of the clamping block 231 (the outer surface close to the bottom of the retaining member 20). The clamping block 231 is a rectangular block structure, and its width is slightly larger than the width of the connecting cavity 111.

[0054] The protrusion 232 is a trapezoidal structure, and a slope is provided at its front end to facilitate the insertion of the engaging portion 23 into the connecting cavity 111. The engaging portion 23 is inserted into the connecting cavity 111 by the engaging block 231 against the left and right side walls of the connecting cavity 111, and by the protrusion 232 against the top of the connecting cavity 111 to achieve interference fit. That is, the arrangement of the engaging block 231 and the protrusion 232 increases the stability of the connection of the retainer 20.

[0055] Furthermore, if Figure 6 As shown, when an external force is applied to the pressing portion 22 , the front end of the retaining member 20 body is tilted up, and drives the limiting portion 21 to be tilted up, so that the limiting portion 21 contacts and limits the insertion hole 42 .

[0056] See also Figure 7-Figure 9 The locking member 30 will be described in detail.

[0057] like Figure 7-Figure 8As shown, the locking member 30 includes a main lock body 31 of a door-shaped structure, a movable lock body arranged on the left and right sides of the main lock body 31, and a lock head 32 arranged on the top of the main lock body 31 for limiting the retaining member 20. It should be noted that in this embodiment, the movable lock body adopts a buckle 33, that is, as long as it can be pre-installed with the connecting member 10 and can limit the retaining member 20.

[0058] Specifically, the left and right sides of the connector 10 are provided with a slide groove 112 in which the buckle 33 is inserted and movably connected. In this embodiment, the slide groove 112 is composed of two L-shaped side walls arranged up and down, and a gap is provided between the two side walls. The buckle 33 can be inserted into the slide groove 112 and slide forward and backward, and a limiting wall 331 is also provided on the outer side of the buckle 33, which is located in the gap to increase the stability of the buckle 33. The limiting wall 331 supports the side wall to prevent the buckle 33 from loosening. That is, the distance between the limiting walls 331 is slightly larger than the gap between the two side walls. On the premise of having a certain interference to prevent the slider from shaking up and down, it is also ensured that the buckle 33 can be easily inserted into the slide groove 112.

[0059] In order to realize the pre-installation function and the limit function, the locking member 30 can have two sliding positions on the connecting member 10, and two protrusions that cooperate with the buckle 33 are also provided on the side wall of the connecting member 10, namely the first protrusion 12 and the second protrusion 13, and the two protrusions are arranged horizontally and staggered. When the buckle 33 cooperates with the first protrusion 12, it is a pre-installation position, at which time the locking member 30 is assembled with the connecting member 10, but the retaining member 20 can still be separated from the insertion hole 42 by the pressing portion 22. When the buckle 33 cooperates with the second protrusion 13, it is a locking position, at which time the lock head 32 is located below the pressing portion 22 or abuts against its bottom, and the lock head 32 fills the displacement space at the end of the retaining member 20, thereby locking the retaining member 20 to prevent it from falling off.

[0060] Specifically, in the present embodiment, the first protrusion 12 and the second protrusion 13 are of right-angled trapezoidal structures, and the inclined surfaces of both are arranged backwards, that is, when the buckle 33 contacts the first protrusion 12 and the second protrusion 13, it preferentially cooperates with the inclined surfaces, thereby improving the smoothness of the cooperation between the buckle 33 and the first protrusion 12 and the second protrusion 13.

[0061] It should be noted that the number of protrusions on the side of the connecting member 10 is the same as the number of gears of the locking member 30, and the spacing between the protrusions is greater than or equal to the distance between the front end of the buckle 33 and its slot. Fig. 9 The height of the second protrusion 13 is greater than the height of the first protrusion 12 , that is, the height of each protrusion increases step by step from the side close to the locking member 30 to the side close to the plug-in 40 .

[0062] Furthermore, the lock head 32 is a bridge plate structure, the end of which is connected to the main lock body 31, and the front end is extended to one side of the buckle 33 and is inclined and extended upward. That is, the lock head 32 can rotate with the end as the fulcrum 321 under the action of external force. The setting of this structure is to improve the adaptability of the lock head 32. The lock head 32 and the locking member 30 are an integrated structure, both of which are made of plastic material, that is, the lock head 32 has a certain elasticity and can be directly reset at the fulcrum 321.

[0063] A lock buckle 322 is provided at the front end of the lock head 32, and a slot 24 is provided on the main body of the retainer 20 to cooperate with the lock buckle 322. When the locking member 30 is in the second gear, the lock buckle 322 is inserted into the slot 24 for limiting, further increasing the stability of the retainer 20. The slot 24 is connected to the cavity when the rectangular piece of the clamping portion 23 is cut out before being bent.

[0064] In order to improve adaptability while ensuring a good locking effect, a limit plate 323 is provided below the lock head 32, and the limit plate 323 has the same extension direction as the lock head 32. When the locking member 30 and the connecting member 10 are assembled, the limit plate 323 is located above the connecting member 10 or abuts against its top surface.

[0065] Specifically, a limiting convex wall 324 is further provided on the left and right sides of the lock head 32, and the limiting convex wall 324 is also located on the top surface of the locking member 30 and is located below the retaining member 20 when the locking member 30 is in the second gear position, that is, the longitudinal direction of the retaining member 20 is limited. The setting of the limiting convex wall 324 and the limiting plate 323 also limits the longitudinal direction of the locking member 30, thereby improving the stability between the upper and lower parts of the locking member 30.

[0066] Reference Figure 10-11 The connector 10 is also provided with a terminal 17 and a cavity 16 for accommodating the terminal 17, and the front end surface of the main lock body 31 is also provided with a protrusion 34 that can be inserted into the cavity 16. When the locking member 30 is assembled with the connector 10, the protrusion 34 is inserted into the cavity 16. When the locking member 30 is in the second gear, i.e., the locking position, the protrusion 34 abuts against the terminal 17, thereby preventing the terminal 17 from retreating due to external force when the front end is plugged in, greatly improving the stability of the terminal 17 and preventing poor contact.

[0067] Example 2

[0068] See also Fig.12 The connection unit of the present invention includes a connection member 10, a detachable retaining member 20, and a locking member 30 for fixing the retaining member 20. Fig.12As shown, the connector 10 is located in the middle, and a plug-in 40 matching with the connector 10 is provided on the front side of the connector 10. It should be noted that the plug-in 40 is a female end part that can be assembled with the connector 10 to achieve conductive connection, and it can be any unit that is assembled with the connector 10. In this embodiment, the plug-in 40 is a PCB board, and a plug 41 matching with the connector 10 is provided at the end of the PCB board, and a socket 42 matching with the retaining member 20 is also provided near the plug 41. In particular, the plug-in 40 can also be a female end plug 41 matching with the connector 10, as long as it can be plugged with the connector 10 for conductivity and has the same socket 42.

[0069] Specifically, the retaining member 20 is disposed on the top of the connecting member 10. Figure 3 The top of the connector 10 is provided with a connecting portion 11 for fitting the retaining member 20, and the connecting portion 11 has a hollow connecting cavity 111, and the rear end of the connecting cavity 111 has an opening, which is provided to facilitate the fitting and connection of the retaining member 20. The provision of the retaining member 20 improves the connection strength between the connector 10 and the plug-in 40, that is, the retaining member 20 and the jack 42 cooperate to limit the position, thereby preventing the plug-in 40 and the connector 10 from loosening due to vibration or external pulling.

[0070] The connector 10 retainer 20 of the present invention is a detachable structure, that is, the retainer 20 can be an optional accessory, and the user can have a wider range of choices. The adaptability of the retainer 20 is further improved, that is, the retainer 20 of different lengths can be replaced to adapt to the position of the socket 42.

[0071] See also Figure 4-Figure 6 As shown, the retaining member 20 has a limiting portion 21 matched with the insertion hole 42, a pressing portion 22 arranged at the end, and a clamping portion 23 arranged at the bottom and matched with the connecting portion 11, wherein the limiting portion 21 is arranged at the front end of the retaining member 20 and is arranged to be tilted downward. The left and right sides of the front end of the limiting portion 21 are provided with integrally bent limiting arms 211, and when the retaining portion is matched with the insertion hole 42, the limiting arms 211 extend into the insertion hole 42 for clamping and limiting, and the two limiting walls 331 are body-shaped sheet structures.

[0072] In order to increase the overall structural strength of the limiting portion 21 , a reinforcing rib 212 is provided on the limiting portion 21 , and one end of the reinforcing rib 212 is located at the front end of the limiting portion 21 , and the other end is provided at the connection position between the limiting portion 21 and the retaining member 20 body.

[0073] Specifically, the limiting portion 21 is arranged at the front end of the retaining member 20, that is, the limiting portion 21 is arranged on the side opposite to the pressing portion 22. The pressing portion 22 is formed by bending an integral rectangular sheet upward, and the bending angle of the rectangular sheet is greater than 90° and less than 180°, that is, the rectangular sheet is bent and located above the retaining member 20 to form a gap.

[0074] Since the volume of the main body of the retainer 20 is relatively small, in order to increase the stability of the pressing portion 22, a pressing block 221 is further provided at the end of the pressing portion 22. The pressing block 221 is also a rectangular structure, but the width of the pressing block 221 is greater than the width of the rectangular sheet. That is, the pressing block 221 and the rectangular sheet form a T-shaped structure. In order to increase the strength of the retainer 20 and increase its service life, the retainer 20 is made of metal or plastic with a certain strength, such as high-strength PE plastic, aluminum alloy, stainless steel and other polymer composite materials.

[0075] The structure of the clamping part 23 is similar to that of the pressing part 22. Both are formed by bending a rectangular sheet in one piece. However, the clamping part 23 is bent downward, and its bending angle is also greater than 90° and less than 180°. A gap is formed between its head end and its tail end, thereby forming a deformation area. That is, the function of the clamping part 23 is not only to connect but also to reset. In order to increase the connection strength between the clamping part 23 and the connecting cavity 111, a clamping block 231 is further provided at the end of the clamping part 23, and a protrusion 232 is further provided on the top surface of the clamping block 231 (the outer surface close to the bottom of the retaining member 20). The clamping block 231 is a rectangular block structure, and its width is slightly larger than the width of the connecting cavity 111.

[0076] The protrusion 232 is a trapezoidal structure, and a slope is provided at its front end to facilitate the insertion of the engaging portion 23 into the connecting cavity 111. The engaging portion 23 is inserted into the connecting cavity 111 by the engaging block 231 against the left and right side walls of the connecting cavity 111, and by the protrusion 232 against the top of the connecting cavity 111 to achieve interference fit. That is, the arrangement of the engaging block 231 and the protrusion 232 increases the stability of the connection of the retainer 20.

[0077] Furthermore, if Figure 6 As shown, when an external force is applied to the pressing portion 22 , the front end of the retaining member 20 body is tilted up, and drives the limiting portion 21 to be tilted up, so that the limiting portion 21 contacts and limits the insertion hole 42 .

[0078] See also Fig. 9 , Fig.13 , Fig.14 The locking member 30 will be described in detail.

[0079] like Figure 13-14 As shown, the locking member 30 includes a main lock body 31 of a door-shaped structure, movable lock bodies arranged on the left and right sides of the main lock body 31, and a lock head 32 arranged on the top of the main lock body 31 for limiting the retaining member 20. It should be noted that in this embodiment, the movable lock body is the lock arm 33‵, that is, as long as it can be adjusted to two gears, it can be pre-installed with the connecting member 10 and the retaining member 20 can be limited.

[0080] Specifically, the left and right sides of the connector 10 are provided with a slide groove 112 for inserting and movably connecting the locking arm 33‵. In this embodiment, the slide groove 112 is a slot body with a hollow structure in the middle, and openings are provided at both ends. The locking arm 33‵ can be inserted into the slide groove 112 and slide forward and backward, and a limiting wall 331 with a guiding function and increasing the stability of the locking arm 33‵ is also provided on the outer side of the locking arm 33‵. A guide groove 332 is also provided in the slide groove 112 for the limiting wall 331 to cooperate with, that is, while providing a guiding function, the limiting wall 331 and the guide groove 332 have an interference fit, which also provides good stability for the movement of the locking arm 33‵.

[0081] In order to realize the pre-installation function and the limit function, that is, the locking member 30 can have two sliding positions on the connecting member 10, and two grooves that cooperate with the locking arm 33‵ are also provided on the side wall of the connecting member 10, namely the first groove 14 and the second groove 15, and the two protrusions are arranged horizontally and staggered. When the buckle 33 cooperates with the first groove 14, it is a pre-installation position. At this time, the locking member 30 and the connecting member 10 are assembled, but the retaining member 20 can still be separated from the jack 42 by the pressing portion 22. When the buckle 33 cooperates with the second groove 15, it is a locking position. At this time, the lock head 32 is located below the pressing portion 22 or abuts against its bottom. The lock head 32 fills the displacement space at the end of the retaining member 20, thereby locking the retaining member 20 to prevent it from falling off.

[0082] Specifically, in the present embodiment, the first groove 14 and the second groove 15 are both hemispherical structures, and a hemispherical locking block 333 that can be embedded in the groove is provided on the locking arm 33‵. The locking block 333 cooperates with the two grooves to realize the switching between the two gears of the locking member 30.

[0083] It should be noted that the number of grooves on the side of the connecting member 10 is the same as the number of gears of the locking member 30, and in the present embodiment, the two grooves are at the same horizontal position, that is, as long as the locking member 30 can be assembled and switched between the two gears (the position between the front and the back) on the connecting member 10, it does not matter whether the buckle 33 and the protrusion in the embodiment 1 or the cooperation between the locking arm 33‵ and the groove in the present embodiment is adopted. On this basis, there are more limit adjustment methods, and the position of the protrusion is not limited, that is, the protrusion can be located on the movable lock body or on the side wall of the connecting member 10.

[0084] Furthermore, the lock head 32 is a bridge plate structure, the end of which is connected to the main lock body 31, and the front end is extended to the side of the lock arm 33‵ and is inclined and extended upward. That is, the lock head 32 can rotate with the end as the fulcrum 321 under the action of external force. The setting of this structure is to improve the adaptability of the lock head 32. The lock head 32 and the locking member 30 are an integrated structure, both of which are made of plastic material, that is, the lock head 32 has a certain elasticity and can be directly reset at the fulcrum 321.

[0085] A lock buckle 322 is provided at the front end of the lock head 32, and a slot 24 is provided on the main body of the retainer 20 to cooperate with the lock buckle 322. When the locking member 30 is in the second gear, the lock buckle 322 is inserted into the slot 24 for limiting, further increasing the stability of the retainer 20. The slot 24 is connected to the cavity when the rectangular piece of the clamping portion 23 is cut out before being bent.

[0086] In order to improve adaptability while ensuring a good locking effect, a limit plate 323 is provided below the lock head 32, and the limit plate 323 has the same extension direction as the lock head 32. When the locking member 30 and the connecting member 10 are assembled, the limit plate 323 is located above the connecting member 10 or abuts against its top surface.

[0087] Specifically, a limiting convex wall 324 is further provided on the left and right sides of the lock head 32, and the limiting convex wall 324 is also located on the top surface of the locking member 30 and is located below the retaining member 20 when the locking member 30 is in the second gear position, that is, the longitudinal direction of the retaining member 20 is limited. The setting of the limiting convex wall 324 and the limiting plate 323 also limits the longitudinal direction of the locking member 30, thereby improving the stability between the upper and lower parts of the locking member 30.

[0088] Reference Figure 9-10 The connector 10 is also provided with a terminal 17 and a cavity 16 for accommodating the terminal 17, and the front end surface of the main lock body 31 is also provided with a protrusion 34 that can be inserted into the cavity 16. When the locking member 30 is assembled with the connector 10, the protrusion 34 is inserted into the cavity 16. When the locking member 30 is in the second gear, i.e., the locking position, the protrusion 34 abuts against the terminal 17, thereby preventing the terminal 17 from retreating due to external force when the front end is plugged in, greatly improving the stability of the terminal 17 and preventing poor contact.

[0089] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. A connection unit with a holding structure, characterized in that: The connecting unit comprises: A connector and a plug-in coupled thereto, wherein the connector and the plug-in are connected to conduct a circuit, and a retaining member is detachably provided on the connector, and the retaining member is used to stabilize the connection strength between the connector and the plug-in; One end of the retaining member is connected to the plug-in member for limiting position, and the connecting member is also provided with a locking member, which is movably arranged on the connecting member, and the locking member can be pre-installed on the connecting member and can also limit the retaining member to prevent its connection from loosening; The locking member is provided with a lock head for limiting the position of the retaining member, one end of the lock head is connected to the locking member, and the lock head is arranged at the top of the locking member. When the locking member needs to be used to limit the retaining member, the lock head is located at the bottom of the retaining member; The connecting member includes a cavity and a terminal arranged in the cavity, the locking member is provided with a convex column which can be inserted into the cavity, and when the locking head is located below the retaining member, the convex column presses against one side of the terminal to prevent it from retreating; The connector is provided with a connecting portion, the bottom of the retainer is provided with a snap-fitting portion cooperating with the connecting portion, the end of the retainer is provided with a pressing portion, and the retainer and the plug-in unit can be separated by applying a force on the top of the pressing portion; A limiting plate is provided below the lock head, a gap is provided between the limiting plate and the lock head, and a lock buckle is provided at the end of the lock head, and an empty groove matched with the lock buckle is provided on the retaining member.

2. The connection unit with a holding structure according to claim 1, characterized in that: Slide grooves and at least one protrusion are provided on both sides of the connecting member, and buckles cooperating with the slide grooves are provided on both sides of the locking member. The buckles are inserted into the slide grooves to achieve assembly and gear adjustment through the protrusions.

3. The connection unit with a holding structure according to claim 2, characterized in that: The slide groove is composed of two L-shaped side walls, a gap is arranged between the two side walls, and a limiting wall located in the gap is arranged on the outer side of the buckle, and the limiting wall is used to increase the sliding stability of the buckle.

4. The connection unit with a holding structure according to claim 1, characterized in that: The connecting part has a connecting cavity with an opening on one side, and the clamping part is assembled with the connecting part by being inserted into the connecting cavity; The clamping part is integrally bent and formed, and a clamping block for increasing the connection strength is further provided at the end of the clamping part, a protrusion for longitudinal limiting is provided on the clamping block, and the clamping part is interference-fitted in the connecting cavity through the protrusion and the clamping block.

5. The connection unit with a holding structure according to claim 3 or 4, characterized in that: The other end of the retaining member provided with the pressing portion is provided with a limiting portion, the end of the limiting portion is provided with a limiting arm bent downward, and the plug-in unit is provided with a limiting arm.

6. The connection unit with a holding structure according to claim 5, characterized in that: The two sides of the lock head are also provided with limiting convex walls for further locking the retaining member, and the limiting convex walls and the locking member are an integrated structure.

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