阅读说明：本技术 一种端子及绝缘位移连接器 (Terminal and insulation displacement connector ) 是由 程利娟 鲍小会 王乐义 于 2021-06-25 设计创作，主要内容包括：一种端子及绝缘位移连接器,端子一端为与线缆连接的刺破端,另一端为与另一连接器上端子接触连接的接触端,所述刺破端顶部为两齿结构的V形刀口,且两齿间距从开口到根部逐渐减小,线缆卡在两齿之间,线缆的线皮被V形刀口划破后其线芯与刺破端接触；所述端子为偏心结构,刺破端与接触端两者的中心线平行但不重合。绝缘位移连接器包括上壳体、扣合在上壳体上的下壳体、扣合在下壳体上的应力释放支架,还包括所述的端子,端子插装在上壳体上分布的插装孔中,插装孔的偏心结构与端子相适配。该端子能够与不同规格的线缆牢固连接,并且提高了连接效率,在恶劣环境下,该连接器的壳体能够保护端子不受破坏、线缆不被折断。(A terminal and an insulation displacement connector are disclosed, wherein one end of the terminal is a puncturing end connected with a cable, the other end of the terminal is a contact end in contact connection with a terminal on the other connector, the top of the puncturing end is a V-shaped knife edge with a two-tooth structure, the distance between two teeth is gradually reduced from an opening to the root, the cable is clamped between the two teeth, and a cable core of the cable is in contact with the puncturing end after a cable sheath of the cable is scratched by the V-shaped knife edge; the terminal is of an eccentric structure, and the center lines of the puncture end and the contact end are parallel but not coincident. The insulation displacement connector comprises an upper shell, a lower shell buckled on the upper shell, a stress release support buckled on the lower shell, and terminals, wherein the terminals are inserted in insertion holes distributed on the upper shell, and the eccentric structures of the insertion holes are matched with the terminals. The terminal can be firmly connected with cables of different specifications, the connection efficiency is improved, and the shell of the connector can protect the terminal from being damaged and the cables from being broken under severe environment.)

1. A terminal, terminal (1) one end is for pricking end (105) be connected with cable (5), the contact jaw (103) that the other end is terminal contact connection on another connector, its characterized in that: the top of the puncturing end (105) is provided with a V-shaped knife edge (101) with a two-tooth structure, the distance between the two teeth is gradually reduced from the opening to the root, the cable (5) is clamped between the two teeth, and a wire core (501) of the cable (5) is contacted with the puncturing end (105) after a wire skin of the cable (5) is scratched by the V-shaped knife edge (101); the terminal (1) is of an eccentric structure, and the center lines of the puncture end (105) and the contact end (103) are parallel but not coincident.

2. A terminal according to claim 1, wherein: the two tooth tops of the puncturing end (105) are respectively and oppositely provided with a cutting edge (10101) which is used for cutting the wire skin of the cable (5) when the cable (5) is installed; the included angle between the cutting edges (10101) is larger than the included angle between two teeth of the V-shaped cutting edge.

3. A terminal according to claim 1, wherein: when the cables (5) with different specifications are clamped on the puncture end (105), the distances between the outer side of each cable and the top of the puncture end (105) are equal.

4. The utility model provides an insulation displacement connector, includes casing (2), lock lower casing (3) on last casing (2), stress release support (4) of lock on lower casing (3), its characterized in that: the terminal (1) according to any of claims 1 to 3, wherein the terminal (1) is inserted into insertion holes (201) distributed on the upper housing (2), and the eccentric structure of the insertion holes (201) is adapted to the terminal (1).

5. An insulation displacement connector as defined in claim 4, wherein: two rows of insertion holes (201) are distributed in the upper shell (2), the eccentric directions of the insertion holes (201) in the same row are the same, the eccentric directions of the insertion holes (201) in different rows are opposite, the terminals (1) are inserted into the insertion holes (201) in an interference manner, the contact ends (103) of the two rows of terminals (1) are aligned one by one in the front and back, the piercing ends (105) are arranged in a staggered manner, cables (5) connected with all the terminals (1) are arranged into a flat cable, and adjacent cables (5) in the flat cable are clamped on the corresponding piercing ends (105) one by one in the front and back.

6. An insulation displacement connector as defined in claim 4, wherein: the two end faces of the upper shell (2) are provided with an upper convex rib structure (202) and a lower convex rib structure (203); the two ends of the lower shell (3) are provided with lower shell convex ribs (302) clamped on the lower convex rib structures (203); the two ends of the stress release bracket (4) are provided with bracket convex ribs (401) clamped on the upper convex rib structure (202), and meanwhile, the stress release bracket (4) clamps the two ends of the lower shell (3).

7. An insulation displacement connector as defined in claim 4, wherein: terminal limiting grooves (303) corresponding to the terminal positions one by one are distributed in the bottom surface of the lower shell (3), and the tops of the terminals (1) are inserted into the corresponding terminal limiting grooves (303).

8. An insulation displacement connector as defined in claim 5, wherein: the flat cable extends out from the upper shell (2) to the lower shell (3), cable limiting grooves (301) which correspond to the cables (5) in position one by one are distributed on the bottom surface of the lower shell (3) contacting with the flat cable, and the cables are nested in the cable limiting grooves.

9. An insulation displacement connector as claimed in claim 5 or 8, wherein: the flat cable extends out from the position between the upper shell (2) and the lower shell (3) and then bends backwards, and is clamped between the stress release bracket and the lower shell (3).

10. An insulation displacement connector as claimed in claim 5 or 8, wherein: two edges of the upper surface of the upper shell (2) contacting with the cable (5) are provided with cable limiting tables (204).

Technical Field

The invention belongs to the technical field of connectors, and particularly relates to a terminal and an insulation displacement connector.

Background

Insulation displacement connectors are currently in common use in various industries. Firstly, one of the characteristics of the insulation displacement connector is that after a flat cable insulation skin is punctured by a knife-shaped structure at the tail part of a terminal, a metal wire in the flat cable is not firmly contacted with the knife-shaped structure at the tail part of the terminal, and the connector can have poor contact between the metal wire and the knife-shaped structure under severe use conditions; secondly, the common insulation displacement connector can pull the flat cable when in use, so that stress exists at the contact part of the flat cable and the knife-shaped structure at the tail part of the terminal, and the reliability of a product is reduced; third, in the conventional insulation displacement connector, the knife-shaped structure piercing structure at the tail end of the terminal can only assemble a flat cable with one specification, so that if the flat cable is mixed in the assembling process, the product cannot be used normally.

Disclosure of Invention

The invention provides a terminal and an insulation displacement connector, aiming at solving the technical problem that the connection between a cable and the terminal of the insulation displacement connector is not firm.

The purpose of the invention is realized by adopting the following technical scheme. According to the terminal provided by the invention, one end of the terminal is a puncturing end connected with a cable, the other end of the terminal is a contact end in contact connection with the terminal on the other connector, the top of the puncturing end is a V-shaped knife edge with a two-tooth structure, the distance between two teeth is gradually reduced from an opening to the root, the cable is clamped between the two teeth, and a cable core of the cable is in contact with the puncturing end after a cable sheath of the cable is scratched by the V-shaped knife edge; the terminal is of an eccentric structure, and the center lines of the puncture end and the contact end are parallel but not coincident.

Furthermore, the two tooth tops of the puncturing end are both provided with cutting edges oppositely, and the cutting edges are used for cutting the cable skin when the cable is installed; the included angle between the knife edges is larger than the included angle between two teeth of the V-shaped knife edge.

Furthermore, when the cables with different specifications are clamped on the puncture end, the distances between the outer side of each cable and the top of the puncture end are equal.

The utility model provides an insulation displacement connector, includes last casing, lock lower casing on last casing, lock stress release support on lower casing, still includes the terminal, in the plug-in mounting hole that the terminal plug-in mounting distributes on last casing, the eccentric structure in plug-in mounting hole and terminal looks adaptation.

Furthermore, two rows of insertion holes are distributed on the upper shell, the eccentric directions of the insertion holes in the same row are the same, the eccentric directions of the insertion holes in different rows are opposite, after the terminals are inserted in the insertion holes in an interference mode, the contact ends of the two rows of terminals are aligned one behind one, the puncture ends are arranged in a staggered mode, cables connected with all the terminals are arranged in a flat line, and adjacent cables in the flat line are clamped on the corresponding puncture ends in a front-to-back mode.

Furthermore, both end surfaces of the upper shell are provided with an upper convex rib structure and a lower convex rib structure; the two ends of the lower shell are provided with lower shell convex ribs clamped on the lower convex rib structures; and the two ends of the stress release bracket are provided with bracket convex ribs clamped on the upper convex rib structure, and the two ends of the lower shell are clamped by the stress release bracket.

Furthermore, terminal limiting grooves corresponding to the terminal positions one by one are distributed in the bottom surface of the lower shell, and the tops of the terminals 1 are inserted into the corresponding terminal limiting grooves.

Furthermore, the flat cable extends out from the position between the upper shell and the lower shell, cable limiting grooves corresponding to the cable positions one to one are distributed on the bottom surface of the lower shell, which is in contact with the flat cable, and the cable is nested in the cable limiting grooves.

Furthermore, the flat cable is bent backwards after extending out of the space between the upper shell and the lower shell and is clamped between the stress release bracket and the lower shell.

Furthermore, two edges of the upper surface of the upper shell, which is in contact with the cable, are provided with cable limiting tables.

Compared with the prior art, the invention has the advantages that:

1. the puncturing end of the connector is of a V-shaped structure, the lower the cable is in the puncturing end, the firmer the cable is installed, and the higher the contact reliability is;

2. the V-shaped structure at the puncturing end can be assembled with the flat cables with different specifications, the limiting positions of the flat cables with different specifications assembled in place are the same, and the opening of the V-shaped structure is matched with the thickness of the wire core, so that the reliability of the connector in a severe use environment is ensured;

3. the opening of the V-shaped structure is provided with the cutting edge, the length of the cutting edge ensures that the wire core is not cut when the wire skin is punctured, the wiring quality is ensured, and the puncturing efficiency is improved;

4. the center line of the puncturing end of the terminal and the center line of the contact end of the terminal are not on the same straight line, the staggered arrangement of the puncturing end can be realized by changing the eccentric direction, and during wiring, the cables and the terminals are ensured to be in one-to-one correspondence, so that the phenomenon that the same cable is connected with two terminals is avoided;

5. the upper shell is provided with a cable limiting table, so that the cable is ensured to be reasonable in position when in compression joint, and the cable core is prevented from being scratched due to the fact that the cable is too far down;

6. the lower shell is provided with a terminal limiting groove, and when the surface lead is axially stressed, the piercing end of the contact element is excessively deformed due to stress;

7. the stress release bracket avoids the breakage of the cable caused by the reasons of undersize bending radius and the like, and reduces the stress between the flat cable and the knife edge.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is an overall perspective view of one embodiment of an insulation displacement connector of the present invention;

FIG. 2 is an exploded view of FIG. 1 with the bus bars removed;

FIG. 3 is a front cross-sectional view of the terminal, upper housing, and flat cable assembly of FIG. 1;

FIG. 4 is a front view of one embodiment of a terminal of the present invention;

FIG. 5 is a schematic view of the terminal of FIG. 4 assembled in comparison to different cable types;

FIG. 6 is a perspective view of the upper housing of FIG. 1;

FIG. 7 is a cross-sectional view of FIG. 6;

FIG. 8 is a perspective view of the lower housing of FIG. 1;

FIG. 9 is a front cross-sectional view of FIG. 8;

FIG. 10 is a side sectional view of FIG. 8;

FIG. 11 is a perspective view of the strain relief bracket of FIG. 1;

FIG. 12 is a front view of FIG. 11;

fig. 13 is a schematic view of an insulation displacement connector according to the present invention.

[ reference numerals ]

1-terminal, 101-V-shaped knife edge, 10101-knife edge, 102-puncturing end center line, 103-contact end, 104-contact end center line, 105-puncturing end, 2-upper shell, 201-plug-in hole, 202-upper convex rib structure, 203-lower convex rib structure, 204-cable limiting platform, 205-plug-in cavity, 3-lower shell, 301-cable limiting groove, 302-lower shell convex rib, 303-terminal limiting groove, 304-clamping hole, 305-reinforcing rib, 4-stress release bracket, 401-locking convex rib, 402-pressing part, 403-boss, 5-cable, 501-wire core, 502-thinner cable, 503-thicker cable, 504-wire arranging end, 505-wire arranging main body, 506-bending section, 507-thinner cable radius, 508-thicker cable radius, 6-cable pass-through position.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of an insulation displacement connector according to the present invention, as shown in fig. 1 to 13, includes a terminal 1 having electrical conductivity, an upper housing 2, a lower housing 3, a stress releasing bracket 4, and a cable 5, which are engaged with the terminal 1, wherein a plurality of cables are arranged into a flat cable, each cable 5 is connected to a corresponding terminal 1, the terminal 1 is inserted into the upper housing 2, the lower housing 3 is fastened to the upper housing 2, the flat cable extends from between the upper housing 2 and the lower housing 3, and is bent backward after extending, the stress releasing bracket 4 is fastened to the lower housing 3, and the bent flat cable is clamped between the lower housing 3 and the stress releasing bracket 4.

The terminal 1 is in the form of a piercing terminal, and can be quickly connected with a cable and a connector by matching with the upper shell 2. The terminal 1 is a strip-shaped plate which is cut, and the conductive material for manufacturing the terminal 1 has certain plasticity. Terminal 1 includes two parts of integrative setting, is respectively: piercing end 105, contact end 103. The contact terminal 103 is adapted to be inserted into and connected to a contact terminal of another connector terminal, and the piercing terminal 105 is adapted to be connected to the cable 5. The terminal 1 is eccentric structure, and the center lines of the puncture end 105 and the contact end 103 are parallel but not coincident

In order to ensure the wiring quality of the cable 5 and improve the efficiency of puncturing the cable 5 and connecting the cable 5, the top end of the puncturing end 105 is designed into a V-shaped knife edge 101 with a two-tooth structure, the two teeth form a V-shaped structure with a certain included angle and a big top and a small bottom, and the cable 5 is clamped between the two teeth of the V-shaped knife edge 101, so that the closer the cable crimping position is, the higher the contact reliability is. As the cable 5 gradually moves downwards between the two teeth of the V-shaped knife edge 101, the distance between the two teeth clamped at the corresponding positions on the cable is smaller and smaller, so that the clamping force of the V-shaped knife edge 101 on the cable 5 is gradually increased along with the narrowing of the width between the two teeth, and the reliability of the connector under the severe use environment is ensured.

The tops of two teeth of the V-shaped knife edge 101 are sharp, and the tops of the two teeth are respectively provided with a knife edge 10101 which is arranged oppositely, so that when the cable 5 is pressed between the two teeth, a sheath wrapped outside the cable 5 can be cut, and the wire core 501 in the cable can be in conductive connection with the terminal 1. Two cutting edges 10101 also form the V-arrangement, and the upper end opening is big, the lower extreme opening is little, and the V-arrangement contained angle that two cutting edges 10101 constitute is greater than the contained angle between the V-arrangement edge of a knife 101, and when the cable 5 impressed between the cutting edge 10101, along with two cutting edges interval littleer and more, cut the line skin of cable inlayer gradually. When the cutting edge 10101 is designed, the thickness of the sheath and the thickness of the wire core 501 of the cable 5 are fully considered, and if the overall length of the cutting edge 10101 is too small, the sheath is difficult to pierce, and if the overall length of the cutting edge 10101 is too large, the wire core is easy to cut.

The V-shaped knife edge 101 can be assembled with cables 5 of different specifications, the cables 5 of different specifications have different radii, such as a thinner cable 502 and a thicker cable 503 shown in fig. 5, both have the same limiting position for being assembled in place, namely: when different cables 5 are vertically installed in the V-shaped knife edge 101 of the terminal 1, the distances between the outer sides of the cables 5 and the top of the V-shaped knife edge 101 are all equal. When the cable 5 is assembled in place, due to the fact that the thicknesses of the wire cores 501 are different, the V-shaped knife edge 101 is elastically deformed in a certain amount due to the plastic property of the material of the terminal, and the distance between two teeth of the V-shaped knife edge 101 is enabled to be just matched with the thickness of the wire cores 501 in the cable 5; when the wire core is thin, such as the thin wire 502 in fig. 5, the radius of the thin wire is the thin wire radius 507 shown in fig. 5, the open opening between the two teeth of the V-shaped knife edge 101 is small, when the wire core is thick, such as the thick wire 503 in fig. 5, the radius of the thin wire is the thick wire radius 508 in fig. 5, the open opening between the two teeth of the V-shaped knife edge 101 is large, and the comparison between the thin wire radius 507 and the thick wire radius 508 is shown in fig. 5. When the cables 5 with different specifications are assembled on the V-shaped knife edge 101, the distances between the outer side of each cable 5 and the top of the V-shaped knife edge are equal, and the distances between the outer side of each cable 5 and the top of the V-shaped knife edge are the same as the distances between the marking lines above the smaller cable radius 507 and the larger cable radius 508 in fig. 5, so that the inner side of the larger cable 503 with the larger radius is closer to the bottom of the V-shaped knife edge than the smaller cable 502 with the smaller radius, the opening size of the V-shaped knife edge 101 is matched with the radius size of the cable core 501, and the reliability of the product in a severe use environment is ensured.

The upper housing 2 is a rectangular parallelepiped, and a plurality of insertion holes 201 are distributed in an upper portion thereof for inserting the terminals 1, in this embodiment, the insertion holes 301 are distributed in two rows. Each insertion hole 201 is divided into two sections, the upper section is used for accommodating the puncturing end 105, and the lower section is used for clamping the upper end of the contact end 103. Because terminal 1 is eccentric structure, the structure phase-match of plug-in mounting hole 201 and terminal 1 also is eccentric structure to plug-in mounting hole 201 has certain magnitude of interference, takes place to rock in order to avoid terminal 1, improves terminal assembly reliability, stability. In this embodiment, the lower section of the insertion hole 201 is in interference fit with the upper end of the contact end 103. The lower part of the upper shell 2 is provided with an inserting cavity 205, after each terminal is inserted into the inserting hole 201, the lower ends of the contact ends 103 are all positioned in the inserting cavity 205, the inserting cavity 205 is used for accommodating an inserting end of another connector for inserting with the connector, and after inserting, the contact ends of the terminals 1 between the two connectors are mutually contacted and communicated.

Although the lower the cable 5 is in the crimping position, the closer the wire core 501 is in contact with the terminal 1, and the higher the crimping reliability, the lower the cable 5 is in the crimping position, the higher the risk that the piercing end 105 scratches the wire core 501 is also meant. Consequently, go up the upper surface both sides edge of casing 2 and set up the spacing platform 204 of cable, the spacing platform 204 of cable supports on the cable, and position is reasonable when guaranteeing the crimping of cable 5, prevents that cable 5 from going into down the card and going into too deeply, avoids with sinle silk 501 fish tail.

To reduce the size of the connector assembly and to achieve high density transmission without misalignment of the contact ends 103 of the terminals 1, the terminals 1 are designed to be eccentric, i.e., the piercing end center lines 102 and the contact end center lines 104 are parallel but not collinear. This eccentric configuration allows the staggered arrangement of the piercing ends 105 to be achieved by changing the direction of the eccentricity when the terminal 1 is assembled. In the two rows of insertion holes 201 on the upper part of the upper shell 2, the lower sections of the insertion holes 201 are not arranged in a staggered manner, and the two rows of insertion holes 201 are aligned one by one; the upper sections of the insertion holes 201 are distributed in a staggered manner, as shown in fig. 6, the upper sections of the two rows of insertion holes 201 are not aligned, but staggered, the eccentric directions of the upper sections of the insertion holes 201 in the same row are the same, but the eccentric directions of the upper sections of the insertion holes 201 in different rows are different. The terminals 1 are inserted into the insertion holes 201, as shown in fig. 3, the piercing ends 105 of the front row terminals 1 are deviated to the right, the piercing ends 105 of the rear row terminals 1 are deviated to the left, therefore, when viewed from the front, the piercing end 105 of each terminal 1 in the rear row is positioned between the piercing ends 105 of two adjacent terminals 1 in the front row, and the contact ends 103 of the terminals 1 and the corresponding lower sections of the insertion holes are aligned one by one, so that only the contact end 103 of the front row terminal 1 can be seen, but not the contact end 103 of the rear row terminal when viewed from the front. When each cable 5 of the flat cable is crimped to the piercing end 105 of the terminal, the adjacent cables 5 are crimped in tandem to the piercing end 105 of the front and rear rows of terminals. The eccentric structures of the terminals 1 and the insertion holes 201 enable the cables 5 and the terminals 1 to be in one-to-one correspondence under the condition that the lower section hole sites of the insertion holes 201, used for inserting the contact ends 103 of the terminals 1, of the upper shell 2 are not staggered, the phenomenon that the same cables 5 are matched with the two terminals 1 at the same time is avoided, reliable assembly of the terminals 1 and the upper shell 2 is achieved, and meanwhile the position relation between the cables 5 and the terminals 1 is limited to a certain degree.

For guaranteeing 5 crimping backs of cable casing 3 with the cooperation of last casing 2, go up casing 2 and casing 3 down and all be equipped with locking structure, in this embodiment, adopt locking structure to adopt protruding muscle structure, realize locking through protruding muscle structure lock between them on casing 3 and the last casing 2 down.

The rib structure on the upper shell 2 comprises an upper rib structure 202 and a lower rib structure 203. The end surfaces of the two sides of the upper shell 2 are both provided with an upper convex rib structure 202 and a lower convex rib structure 203. The upper convex rib structures 202 are located on the side end faces, close to the upper surface, of the upper shell 2, each side end face is provided with two upper convex rib structures 202, and the two upper convex rib structures 202 on the same side end face are located on the positions, close to the front end face and the rear end face of the upper shell 2, respectively. The lower convex rib structure 203 is located below the upper convex rib structure 202, each side end surface is provided with one lower convex rib structure 203, and the lower convex rib structure 203 is located in the middle of the front and back direction of the side end surface. Go up the protruding muscle structure of casing 2 and be the bellied lug in outside, and the edge that leans on of lug is equipped with the chamfer, conveniently impresses when casing 3, stress release support 4 follow the assembly of last casing 2 top down.

After the cables 5 are arranged in a flat cable and the ends of the flat cable are fitted to the terminals 1 mounted on the upper housing 2, the flat cable is bent to the rear side. As shown in fig. 1, the flat cable is divided into three parts, the flat cable part assembled with the terminal is a flat cable end 504, the bent flat cable part is a flat cable bending section 506, and the flat cable part connected with another connector is a flat cable main body 505. The lower shell 3 is buckled above the assembly position of the flat cable end 504 and the upper shell 2, the flat cable bending section 506 bypasses the side of the lower shell, the flat cable main body 505 covers the upper part of the lower shell 3, and the lower shell 3 is matched with the upper shell 2 to ensure the position relation between the cable 5 and the terminal 1 after the cable 5 and the terminal 1 are assembled.

The main part of the lower casing 3 is a rectangular plate, the two end parts of the main part are respectively provided with a reinforcing rib 305 extending in the same direction in a bending way, each end part of the lower casing 3 is respectively provided with two reinforcing ribs 305, the outer end surfaces of the two reinforcing ribs 305 are respectively flush with the front end surface and the rear end surface of the lower casing 3, and the reinforcing ribs 305 are perpendicular to the main part of the lower casing 3. The terminal strengthening rib 305 on same terminal surface is provided with the protruding muscle 302 of casing down, and the protruding muscle 302 of casing couples together two strengthening ribs down, and the shape of the protruding muscle 302 of casing down is the cuboid, and its outside one side outwards protrudes, and the interior limit of terminal surface is equipped with the chamfer under the protruding muscle 302 of casing down, and casing 3 is down inserted at last casing 2's lower protruding muscle structure 203 under the convenience. On any end face of two sides of the lower shell 3, the edge of the lower shell 3, the reinforcing rib 305 and the lower shell convex rib 302 are enclosed to form a clamping hole 304. When lower casing 3 and last casing 2 assemble, casing 2's both sides are cliied to the strengthening rib 305 on casing 3 both sides and lower casing protruding muscle 302 down, the width between the protruding muscle structure outside on last casing 2 both sides is greater than the width between the protruding muscle structure 305 inboard in casing 3 both sides down, the width in card hole 304 is greater than the maximum width of protruding muscle structure fore-and-aft direction on the arbitrary terminal surface of last casing 2, in the assembling process, lower casing protruding muscle 302 on casing 3 down and last casing 2 go up protruding muscle structure 202, protruding muscle structure 203 is extruded down successively, make strengthening rib 305 outwards open, when lower casing protruding muscle 302 marchs down protruding muscle structure 203 below, strengthening rib 305 reconversion, lower casing protruding muscle 302 blocks in the below of protruding muscle structure 203 down, the lower surface of casing 3 is also spacing on terminal 1 and cable 5 down this moment.

Rock after on terminal 1 for avoiding the assembly of cable 5, with the inseparable lock of last casing 2 on the casing 3 down, the lower surface distribution arrangement of casing 3 and winding displacement contact has the cross-section to be the spacing recess 301 of cable of semicircle structure, and the spacing recess 301 of cable suits with the external diameter of cable 5, and the quantity of cable is the same in the number of the spacing recess 301 of cable and the winding displacement, and the arranging of the spacing recess 301 of cable corresponds with arranging of cable in the winding displacement. When the lower shell 3 is assembled on the upper shell 2, the cable limiting groove 301 has a certain limiting effect on the cable, and meanwhile, the flat cables of any specification are positioned on the same horizontal plane.

The lower surface of the lower shell 3 contacting the piercing end 105 of the terminal 1 is also distributed with terminal limiting grooves 303, the terminal limiting grooves 303 are of a groove or pit structure, after the lower shell 3 is buckled on the upper shell 2, the top of the piercing end 105 of the terminal 1 is inserted into the terminal limiting grooves 303, and the deformation of the piercing end 105 caused by stress is limited when the cable receives axial force. The distribution of the terminal retaining grooves 303 corresponds to the distribution of the piercing ends 105.

After the lower shell 3 is assembled, the stress releasing bracket 4 is buckled above the flat cable main body 505 and used for controlling the bending radius of the cable bending section 506 at the cable outlet between the upper shell 2 and the lower shell 3, so that the phenomenon that the cable 5 is broken due to the fact that the bending radius of the cable is too small and the stress of the bending part is too large is avoided, or the puncture position of the connector is damaged due to the influence of mechanical stress caused by the movement of the cable 5.

The stress release bracket 4 is a rectangular parallelepiped, and the top of the stress release bracket 4 is a pressing portion 402, and the top of the pressing portion 402 is a plane, which is a force-bearing surface for pressing the stress release bracket 4 onto the flat cable. Bosses 403 are provided at both ends of the stress releasing bracket 4, and the bosses 403 at both ends are protruded toward the same side and are protruded downward from the end of the corresponding stress releasing bracket 4. The upper end of the boss 403 is thicker than the lower end, and the outer side surface of the boss 403 is a plane. The terminal inboard face of orientation of two boss 403 lower extremes all is equipped with locking protruding muscle 401, and locking protruding muscle 401's shape is the cuboid of rectangular shape, and the inboard edge of its lower surface is equipped with the chamfer, and convenient cartridge is when last casing 2, and the minimum width is less than the biggest external diameter of 2 protruding muscle structures of last casing between two boss 403. When inserting the stress release support 4 on last casing 2, because the lower extreme rear end of boss 403 is thinner, locking protruding muscle 401 extrudees on last protruding muscle structure 202, and the lower extreme of boss 403 opens gradually, treats that locking protruding muscle 401 moves the below of last protruding muscle structure 202, and the lower extreme of boss 403 reverts, and locking protruding muscle 401 blocks in the below of last protruding muscle structure 202. When the pressing portion 402 presses on the flat cable, the locking rib 401 hooks the upper convex rib structure of the upper shell 2, meanwhile, the inner side surface of the boss 403 presses the outer side surface of the upper reinforcing rib 305 of the lower shell 3, so that locking among the upper shell 2, the lower shell 3 and the stress releasing bracket 4 is realized, and at the moment, a space is formed between the stress releasing bracket 4 and the lower shell 3, namely, the cable shown in fig. 12 passes through the position 6, so that the flat cable main body 505 can pass through the area to realize reverse wire throwing. When the stress release bracket 4 is assembled, the direction of the side surface of the boss 403 is consistent with the extending direction of the flat cable, in the vertical direction, the width of the flat cable is projected between the two bosses 403, the other end of the flat cable is connected by using the connector structure of the invention, when the two connectors are not on the same horizontal plane, the flat cable can move up and down in the area between the two bosses 403, and the flat cable is prevented from being worn and broken on the edge.

After the stress release bracket 4 is assembled, the bending radius of the flat cable is reasonable when the flat cable is bent due to the space height between the stress release bracket and the lower shell 3, the phenomenon that the cable core is broken due to the fact that the bending radius is too small is avoided, and the situation that the cable is damaged at the position where the cable is contacted with the knife edge position due to the influence of mechanical stress caused by the movement of the flat cable on the connector is prevented. When the cable passes through the lower part of the stress release bracket 4, the stress release bracket 4 meets the use requirement of the bending radius of the cable 5; the stress release bracket 4 is matched with the upper shell 2 through the lower shell 3, the position relation among the stress release bracket, the lower shell and the upper shell is ensured, the situations of interference or locking failure and the like are avoided, and the existence of stress at the contact position of a flat cable and a knife edge is reduced in the using process of the connector.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.