High-reliability IDC crimping type connector

Abstract

The utility model relates to a high-reliability IDC crimping type connector comprising a wire end connector which comprises a first main body, a middle cover and a plurality of first terminals. The first main body is clamped with the middle cover; a threading hole is formed in the middle cover; one end of the first terminal is inserted into the first main body, the other end of the first terminal is inserted into the middle cover and passes through the threading hole, and a certain angle is formed between the threading hole and the first terminal. According to the high-reliability IDC crimping type connector, the middle cover is integrated, the threading holes are formed in the middle cover, flat cables are accurately positioned through the threading holes, the middle cover is directly preassembled on the first main body, and the riveting assembly efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of connectors, in particular to a high-reliability IDC crimping connector. Background Art

[0002] For the existing IDC crimping connector, it is usually necessary to pre-install a front cover on the main body first, place the cable on the front cover, and then pre-install a middle cover. The front cover and the middle cover sandwich the cable, and through the auxiliary positioning and riveting of the front cover and the middle cover, the terminals in the main body can accurately pierce the cable and be electrically connected to its inner conductor. Such a connector has a low assembly efficiency due to more components, and the cable cannot be accurately positioned. Summary of the Invention

[0003] Based on this, the purpose of the utility model is to provide a high-reliability IDC crimping connector, which has the advantages of accurate positioning and high assembly efficiency.

[0004] A high-reliability IDC crimping connector includes a wire-end connector, and the wire-end connector includes a first main body, a middle cover and a plurality of first terminals; the first main body is snap-connected to the middle cover; a wire-passing hole is provided on the middle cover; one end of the first terminal is inserted into the first main body, and the other end of the first terminal is inserted into the middle cover and passes through the wire-passing hole, and the wire-passing hole is arranged at a certain angle with the first terminal. For the high-reliability IDC crimping connector of the utility model, through the integration of the middle cover, a wire-passing hole is arranged on the middle cover, the wire-passing hole accurately positions the cable, and the middle cover is directly pre-installed on the first main body, and the riveting assembly efficiency is high.

[0005] Further, first stop bosses and second stop bosses are provided on both side surfaces of the first main body, and the first stop bosses are located above the second stop bosses; locking latches are fixedly connected to both sides of the middle cover, and the locking latches are snap-connected to the first stop bosses or the second stop bosses. The setting of the first stop bosses and the second stop bosses improves the accurate positioning of riveting.

[0006] Further, a plurality of positioning grooves are provided on the upper end surface of the first main body, and a plurality of positioning posts matched with the positioning grooves are provided on the lower end surface of the middle cover. The positioning grooves and the positioning posts cooperate to guide riveting.

[0007] Further, it further includes a top cover, and second locking hooks are fixedly provided on both side surfaces of the top cover, and the second locking hooks are snap-connected to the first stop bosses; when the second locking hooks are snap-connected to the first stop bosses, there is a gap between the lower end surface of the top cover and the upper end surface of the middle cover for clamping the folded-back cable.

[0008] Further, the first terminal includes a base portion, two piercing portions, and a head portion; the piercing portions and the head portion are respectively fixedly connected to two ends of the base portion, the two piercing portions are symmetrically arranged, and one end thereof is fixedly connected to the base portion; a plurality of first terminal slots are provided in the first main body, the base portion and the head portion are inserted into the first terminal slots, and the piercing portions are exposed on the upper end surface of the first main body; inclined cuts are provided on the relatively inner sides of the two ends of the two piercing portions away from the base portion; avoiding positions are provided on the relatively outer sides of the two piercing portions. The inclined cuts are beneficial to piercing the flexible cable, and the avoiding positions prevent damage to adjacent conductors of the flexible cable.

[0009] Further, a stop position is provided on the base portion, a stop step is provided in the first terminal slot, and the stop position abuts against the stop step; a partition is provided at the bottom end of the first terminal slot, and one end of the head portion away from the base portion abuts against the partition. This prevents the first terminal from being inserted and pulled out to the extreme, resulting in pin collapse.

[0010] Further, it further includes a board-end connector, and the board-end connector includes a second main body and a plurality of second terminals; first locking hooks are fixedly connected to two side surfaces of the first main body, protrusions are provided on two side surfaces of the second main body, the first locking hooks are engaged with the protrusions, one end of the second terminal is inserted into the first main body and the second main body and is in electrical contact connection with the first terminal; the other end of the second terminal is exposed on the lower end surface of the second main body and is used for welding to the circuit board.

[0011] Further, anti-fooling bosses are provided on two side surfaces of the first main body near one side edge, an insertion slot is provided on the second main body, and anti-fooling grooves that cooperate with the anti-fooling bosses are provided on two relatively inner sides of the insertion slot. This prevents the wire-end connector and the board-end connector from being inserted in the reverse direction.

[0012] Further, a plurality of clamping bosses are provided on the lower end surface of the second main body, and the end of the second terminal away from the first main body is clamped between the two clamping bosses. This is beneficial to guiding the welding feet of the second terminal and ensuring satisfactory welding.

[0013] Further, a protective plate is fixedly provided on the second main body, and the end of the second terminal away from the first terminal is inserted into the protective plate. This is beneficial to guiding the welding feet of the second terminal and ensuring satisfactory welding.

[0014] For better understanding and implementation, the present utility model will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the high-reliability IDC crimping connector of the present application;

[0016] Figure 2 is an exploded view of the wire-end connector;

[0017] Figure 3 It is a schematic structural diagram of a wire-end connector;

[0018] Figure 4 It is one of the longitudinal cross-sections of the first body, the middle cover and the flexible cable;

[0019] Figure 5 It is the second of the longitudinal cross-sections of the first body, the middle cover and the flexible cable;

[0020] Figure 6 It is a schematic structural diagram of the board-end connector in this embodiment;

[0021] Figure 7 It is a schematic structural diagram of the board-end connector in other embodiments.

[0022] In the figure:

[0023] 1 - wire-end connector;

[0024] 11 - first body; 111 - first terminal slot; 1111 - stop step; 1112 - partition; 112 - installation part; 113 - first locking hook; 1131 - unlocking part; 11311 - abutting step; 1132 - hook part; 114 - first stop boss; 115 - second stop boss; 116 - positioning slot; 117 - anti-fooling boss;

[0025] 12 - first terminal; 121 - base part; 1211 - stop advancement; 122 - piercing part; 1221 - inclined notch; 1222 - avoidance position; 123 - head;

[0026] 13 - middle cover; 131 - accommodating slot; 132 - wire passing hole; 133 - lock; 134 - avoidance groove; 135 - positioning post;

[0027] 14, top cover; 141 - second locking hook; 142 - limiting boss;

[0028] 2 - flexible cable;

[0029] 3 - board-end connector; 31 - second body; 311 - insertion slot; 3111 - anti-fooling groove; 312 - second terminal slot; 313 - protrusion; 314 - clamping boss; 315 - protection plate; 316 - fork feet; 32 - second terminal;

[0030] 4 - circuit board. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical direction", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or a connection through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] Please refer to Figure 1 , this application provides a highly reliable IDC press-fit connector, including a wire-end connector 1 and a board-end connector 3. A first terminal 12 is inserted into the wire-end connector 1, and a second terminal 32 is inserted into the board-end connector 3; the wire-end connector 1 and the board-end connector 3 are pluggable and connectable, and the first terminal 12 and the second terminal 32 are electrically connected. When in use, a flexible cable 2 is inserted into the wire-end connector 1, and the first terminal 12 pierces the surface of the flexible cable 2 to contact and electrically connect with its internal conductor; one end of the second terminal 32 away from the first terminal 12 is welded to the circuit board 4.

[0035] Furthermore, please refer to Figures 2 - 5 , the wire-end connector 1 includes a first body 11, a plurality of first terminals 12, a middle cover 13, and a top cover 14.

[0036] The first body 11 is provided with a plurality of first terminal slots 111 for inserting the first terminals 12; the first terminal slots 111 penetrate through the upper and lower end faces of the first body 11; and each first terminal slot 111 is provided with a contact port for the first terminal 12 to be in contact electrical connection with the second terminal 32. Further, a stop step 1111 is provided in the first terminal slot 111 for clamping the first terminal 12. Further, a partition 1112 is provided at the lower end of the first terminal slot 111 to prevent the first terminal 12 from having a broken PIN after extreme insertion and extraction, thereby causing abnormal contact of the connector.

[0037] Mounting portions 112 are provided at both ends of the first body 11, and a first locking hook 113 is rotatably connected to the mounting portions 112 for fixing to the board - end connector 3. The first locking hooks 113 on both sides are arranged facing each other. Preferably, the cross - section of the mounting portion 112 is U - shaped, and both ends of the two arms of the U - shape are perpendicularly and fixedly connected to both sides of the end of the first body 11, and the first locking hook 113 is located between the two arms of the U - shape.

[0038] Further, the first locking hook 113 includes an unlocking portion 1131 and a hook portion 1132. Both sides of the unlocking portion 1131 are respectively rotatably connected to the inner sides of the two arms of the U - shaped cross - section of the mounting portion 112; the hook portion 1132 is fixedly connected to the unlocking portion 1131 and is arranged facing the body of the first body 11. Further, a stop step 11311 is provided on the end face of the unlocking portion 1131 away from the body of the first body 11. When the first locking hook 113 is hooked and connected to the hooks on both sides of the board - end connector 3, the stop step 11311 abuts against the upper end of the mounting portion 112.

[0039] First stop bosses 114 and second stop bosses 115 are provided on both side faces of the first body 11, and the first stop bosses 114 are located above the second stop bosses 115. In this embodiment, the first stop bosses 114 are located at the upper ends of both side faces of the first body 11.

[0040] Further, a plurality of positioning slots 116 are provided on the upper end face of the first body 11. Preferably, the plurality of positioning slots 116 are evenly distributed along the length direction of the first body 11. In this embodiment, the number of the positioning slots 116 is four, which are respectively located at both ends of both sides of the first body 11.

[0041] Further, anti - fooling bosses 117 are provided on one side of both side faces of the first body 11 close to the front end face, and the anti - fooling bosses 117 on both side faces are symmetrically distributed.

[0042] Further, the first terminal 12 is Y-shaped, including a base portion 121, two piercing portions 122, and a head portion 123. The two piercing portions 122 and the head portion 123 are respectively fixed to both ends of the base portion 121. The two piercing portions 122 are symmetrically arranged, and one end thereof is fixed to the base portion 121. Among them, the piercing portion 122 is used to pierce the surface of the flexible cable 2 and make electrical contact with the internal conductor thereof; the head portion 123 is used to make electrical contact with the second terminal 32.

[0043] Further, a stop position 1211 is provided on the base portion 121. When the base portion 121 is inserted into the first terminal groove 111, the stop position 1211 abuts against the stop step 1111 to prevent the first terminal 12 from being excessively inserted into the first body 11.

[0044] Further, an inclined notch 1221 is provided on the relatively inner side of the end of the two piercing portions 122 away from the base portion 121, which facilitates the piercing portion 122 to pierce the surface of the flexible cable 2. Further, an avoidance position 1222 is provided on the relatively outer side of the two piercing portions 122. When the piercing portion 122 pierces the surface of the flexible cable 2 and makes contact with the internal conductor, damage to adjacent conductors is avoided.

[0045] Further, a contact point is provided at the end of the head portion 123 away from the base portion 121. The longitudinal section of the contact point is V-shaped and is located at the contact port for making electrical contact with the second terminal 32. When the head portion 123 is inserted into the first terminal groove 111, the end of the head portion 123 away from the base portion 121 abuts against the partition 1112 to prevent the first terminal 12 from having a broken PIN after extreme plugging and unplugging, thereby causing abnormal contact of the connector.

[0046] During use, the first terminal 12 is inserted into the first terminal groove 111 from above the first body 11. The stop position 1211 abuts against the stop step 1111, the head portion 123 abuts against the partition 1112, and the piercing portion 122 protrudes outside the first body 11.

[0047] A plurality of accommodating grooves 131 are provided in the middle cover 13 for accommodating the piercing portions 122; the accommodating grooves 131 penetrate through the upper and lower end faces of the middle cover 13. Each first terminal groove 111 has an accommodating groove 131 corresponding thereto. A wire passing hole 132 is provided on the middle cover 13 along its length direction. The wire passing hole 132 penetrates through the front and rear end faces of the middle cover 13 and communicates with each accommodating groove 131 for passing the flexible cable 2. Further, the upper and lower end faces of the wire passing hole 132 are wavy and cooperate with the upper and lower surfaces of the flexible cable 2, which is beneficial to the positioning of the flexible cable 2. Further, the upper and lower sides of the wire passing hole 132 are slopes for guiding the flexible cable 2 to pass through the wire passing hole 132.

[0048] Further, locking latches 133 are fixedly connected to both sides of the middle cover 13. The longitudinal section of the locking latch 133 is U-shaped. Both ends of the two arms of the U-shape are fixedly connected to both side surfaces of the middle cover 13. The bottom of the U-shape protrudes from the lower end surface of the middle cover 13 and is snap-connected to the first stop boss 114. In this embodiment, avoidance grooves 134 are provided at the lower ends of both side surfaces of the middle cover 13 for accommodating the first stop boss 114.

[0049] Further, positioning posts 135 that cooperate with the positioning grooves 116 are provided on the lower end surface of the middle cover 13 for precise alignment of the middle cover 13 and the first main body 11.

[0050] During use, the locking latch 133 is snap-connected to the first stop boss 114, and there is a gap between the lower end surface of the middle cover 13 and the upper end surface of the first main body 11. The piercing portion 122 is located within this gap; the wiring harness 2 is threaded through the wire passing hole 132, and its upper and lower surfaces cooperate with the upper and lower end surfaces of the wire passing hole 132; the middle cover 13 is pressed downward, and the piercing portion 122 passes through from below the middle cover 13 into the accommodating groove 131 and pierces the surface of the wiring harness 2 to contact and electrically connect with its internal conductor until the lower end surface of the middle cover 13 abuts against the upper end surface of the first main body 11, the positioning post 135 cooperates with the positioning groove 116, and the locking latch 133 moves downward and is snap-connected to the second stop boss 115.

[0051] Second locking hooks 141 are fixedly provided on both sides of the top cover 14 for hook connection with the hooks on both sides of the first main body 11. Further, a limiting boss 142 is provided on the lower end surface of the top cover 14 to prevent damage to the folded-back wiring harness 2. After the locking latch 133 is snap-connected to the second stop boss 115, one end of the wiring harness 2 threaded through the wire passing hole 132 is folded back around the upper end of the middle cover 13, and then the top cover 14 is covered above the middle cover 13 until the limiting boss 142 abuts against the upper end surface of the middle cover 13, the second locking hook 141 is hook-connected to the first stop boss 114, and the folded-back wiring harness 2 is clamped between the lower end surface of the top cover 14 and the upper end surface of the middle cover 13.

[0052] Please refer to Figures 6 - 7 , the board-end connector 3 includes a second main body 31 and second terminals 32.

[0053] A plugging slot 311 is provided on the second main body 31 for plugging and connecting with the first main body 11. Further, anti-fooling grooves 3111 that cooperate with the anti-fooling bosses 117 are provided on the left and right side surfaces of the plugging slot 311 to prevent the first main body 11 and the second main body 31 from being plugged in reverse.

[0054] A plurality of second terminal slots 312 are provided inside the second main body 31 for inserting the second terminals 32. The second terminal slots 312 penetrate through the upper and lower end surfaces of the second main body 31.

[0055] On both sides of the second body 31, there are protrusions 313 for engaging and connecting with the first locking hook 113, so as to realize the fixed connection between the first body 11 and the second body 31.

[0056] The second terminal 32 includes an insertion portion and a welding portion. One end of the insertion portion is perpendicularly and fixedly connected to one end of the welding portion. The insertion portion is inserted into the second terminal slot 312, and the welding portion is exposed on the lower end face of the second body 31 for welding with the circuit board 4.

[0057] In this embodiment, the insertion portion and the welding portion together form an L shape. A protective plate 315 is fixedly provided at the lower end of the second body 31. The insertion portion is inserted into the second terminal slot 312, and the welding portion is inserted into the protective plate 315. The end of the welding portion away from the insertion portion is used for welding with the circuit board 4.

[0058] Furthermore, fork feet 316 are also fixedly provided on both side surfaces of the second body 31 for fixing to the circuit board 4.

[0059] Furthermore, a plurality of clamping bosses 314 are provided on the lower end face of the second body 31. A section of the welding portion close to the insertion portion is clamped between the two clamping bosses 314, and a section of the welding portion away from the insertion portion is used for welding with the circuit board 4. The second terminal 32 and the second body 31 arranged in this way can align the welding portion to ensure that the welding portion meets the welding requirements. In other embodiments, the welding portion is in a stepped shape. In other embodiments, the welding portion is in an L shape.

[0060] During use, the lower end of the first body 11 is inserted into the insertion slot 311. The anti-fooling boss 117 cooperates with the anti-fooling groove 3111. The head 123 is in electrical contact connection with the insertion portion through the contact port. The first locking hook 113 is engaged and connected with the protrusion 313, so as to realize the connection between the wire-end connector 1 and the board-end connector 3.

[0061] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and the present invention also intends to include these modifications and improvements.

Claims

1. A highly reliable IDC press-fit connector, characterized in that: It includes a wire-end connector, and the wire-end connector includes a first body, a middle cover, and a plurality of first terminals; the first body is snap-connected to the middle cover; the middle cover is provided with a wire-passing hole; one end of the first terminal is inserted into the first body, and the other end of the first terminal is inserted into the middle cover and passes through the wire-passing hole, and the wire-passing hole is arranged at a certain angle with the first terminal.

2. The highly reliable IDC press-fit connector according to claim 1, wherein: On both side surfaces of the first body, there are a first stop boss and a second stop boss, and the first stop boss is located above the second stop boss; on both sides of the middle cover, there are snap locks fixedly connected, and the snap locks are snap-connected to the first stop boss or the second stop boss.

3. The highly reliable IDC press-fit connector according to claim 1, wherein: On the upper end surface of the first body, there are a plurality of positioning grooves, and on the lower end surface of the middle cover, there are a plurality of positioning posts that cooperate with the positioning grooves.

4. The highly reliable IDC press-fit connector according to claim 2, wherein: It further includes a top cover, and on both side surfaces of the top cover, there are second locking hooks fixedly provided, and the second locking hooks are snap-connected to the first stop boss; when the second locking hooks are snap-connected to the first stop boss, there is a gap between the lower end surface of the top cover and the upper end surface of the middle cover for clamping the folded flexible cable.

5. The highly reliable IDC press-fit connector according to claim 1, wherein: The first terminal includes a base portion, two piercing portions, and a head portion; the piercing portions and the head portion are respectively fixedly connected to both ends of the base portion, the two piercing portions are symmetrically arranged, and one end of each of them is fixedly connected to the base portion; in the first body, there are a plurality of first terminal grooves, the base portion and the head portion are inserted into the first terminal grooves, and the piercing portions are exposed on the upper end surface of the first body; on the relatively inner sides of the two piercing portions away from the base portion, there are inclined cuts; on the relatively outer sides of the two piercing portions, there are avoidance positions.

6. The highly reliable IDC crimping connector according to claim 5, wherein: There is a stop advancement position on the base portion, and there is a stop step in the first terminal groove, and the stop advancement position abuts against the stop step; at the bottom end of the first terminal groove, there is a partition, and the end of the head portion away from the base portion abuts against the partition.

7. The highly reliable IDC crimping connector according to claim 1, wherein: It further includes a board-end connector, and the board-end connector includes a second body and a plurality of second terminals; on both side surfaces of the first body, there are first locking hooks fixedly connected, on both side surfaces of the second body, there are protrusions, and the first locking hooks are snap-connected to the protrusions, and one end of the second terminal is inserted into the first body and the second body and is in electrical contact connection with the first terminal; the other end of the second terminal is exposed on the lower end surface of the second body for soldering to a circuit board.

8. The highly reliable IDC press-fit connector according to claim 7, wherein: On both side surfaces of the first body, near one side edge, there are anti-fooling bosses, on the second body, there is an insertion slot, and on the two relatively inner sides of the insertion slot, there are anti-fooling grooves that cooperate with the anti-fooling bosses.

9. The highly reliable IDC press-fit connector according to claim 7, wherein: On the lower end surface of the second body, there are a plurality of clamping bosses, and the end of the second terminal away from the first body is clamped between the two clamping bosses.

10. The highly reliable IDC press-fit connector according to claim 7, wherein: On the second body, there is a protective plate fixedly provided, and the end of the second terminal away from the first terminal is inserted into the protective plate.

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