Pinch plate connector reliable in contact and capable of preventing oblique plugging

Abstract

The invention discloses a reliable contact and oblique plugging prevention pinch plate connector, which comprises a hole end connector and a needle end connector, when the hole end connector and the needle end connector are in butt joint, a guide column is firstly inserted into a guide hole to realize primary positioning, after continuous insertion, a head side wall is inserted into an air gap to realize two-wheel positioning, and the hole end connector and the needle end connector are in butt joint. And after continuous insertion, the jack assembly is inserted into the head base to realize three-wheel positioning, and after three-wheel positioning, the jack assembly and the needle contact member are finally inserted to realize lossless precise butt joint of the jack assembly and the needle contact member. The pin end connector and the hole end connector are provided with metal shells for protection and have good mechanical performance and shielding performance, the contact piece adopts a rigid pin and micro reed type jack structure and has the advantages of being reliable in contact, resistant to vibration and high in impact capacity, the connector can be effectively prevented from being plugged in and pulled out in an inclined mode through the special design of the contact piece and the shell, and the service life of the connector is prolonged. And damaging the contact. And the terminating structure design of various contact elements can meet the requirements of customers on different installation and connection processes.

Description

Technical Field

[0001] The invention belongs to the technical field of connectors, and in particular relates to a buckle plate connector with reliable contact and anti-oblique insertion and extraction. Background Art

[0002] As the demand for miniaturization of electronic equipment continues to increase, there are more and more requirements for miniaturization of components inside the chassis or module units, especially the internal gusset board connectors used for interconnection between two parallel boards (carrier board and gusset board), which are constantly developing towards high density and low profile.

[0003] As the height of the gusset plate connector becomes shorter, the number of cores increases, and the length becomes longer, the guide length on the base or shell of the docking end is shortened and the guiding effect is weakened. Therefore, blind insertion is prone to occur when the products are docked, resulting in damage to the product contacts or breakage of the base. Moreover, when the products are separated, force is usually applied to the PCB board, which is prone to skewed separation, that is, one end of the connector is separated while the other end is not separated, which leads to bending and damage of the contacts. Especially for long strip connectors, after one end is separated, the contact or base at the other end will be seriously damaged, and the function will fail, resulting in rework. Moreover, such products are usually located in a local position of the printed circuit board, and rework is troublesome, which can easily cause damage to components at other positions on the PCB board. Summary of the invention

[0004] The present invention aims at solving the problems in the prior art and proposes the following technical solutions:

[0005] A gusset plate connector with reliable contact and anti-oblique insertion and extraction, comprising:

[0006] The hole-end connector comprises a seat shell, a recessed portion is provided on the butt joint side of the seat shell and the pin-end connector, guide columns protruding from the recessed portion are provided on both sides of the recessed portion, an air gap is formed between the guide columns and the side of the recessed area, a seat base is provided in the middle of the recessed area, a jack fitting is installed on the seat base, and the height of the side of the jack fitting close to the pin-end connector after installation is less than the depth of the recessed portion;

[0007] The needle-end connector comprises a head shell, a protrusion matched with the recessed portion is arranged on the mating side of the head shell and the hole-end connector, guide holes matched with the guide columns are opened on both sides of the protrusion, a head side wall is formed between the guide hole and the outer side of the protrusion, and the head side wall is matched with the air gap, a head base is installed in the middle of the head shell, and the head base is flush with the protrusion and the side of the hole-end connector after installation, and a needle contact is installed inside the head base;

[0008] When the hole-end connector and the pin-end connector are docked, the guide column is first inserted into the guide hole to achieve preliminary positioning. After further insertion, the head side wall is inserted into the air gap to achieve two-round positioning. After further insertion, the socket assembly is inserted into the head base to achieve three-round positioning. After three-round positioning, the final insertion is performed to achieve lossless and precise docking of the socket assembly and the pin contact.

[0009] As a preferred embodiment of the above technical solution, the hole end connector further includes a first locking accessory and a first potting glue;

[0010] The first locking accessory is installed at the bottom end of the guide column, and the first potting glue is used to fix the seat base and the socket assembly in the seat shell.

[0011] As a preferred embodiment of the above technical solution, the socket assembly is a three-body structure, including a round protective tube, a micro spring coil and a first needle body.

[0012] As a preferred embodiment of the above technical solution, the first needle body includes a weldable needle body, a crimping needle body and a ball implanting needle body.

[0013] As a preferred embodiment of the above technical solution, the upper opening of the circular protective tube is set as a round chamfer, the root of the circular protective tube is set as a step structure, the middle of the circular protective tube is set as a round through hole adapted to the micro spring coil, and the end of the round through hole is used for press-fitting the micro spring coil;

[0014] The upper mouth of the micro spring coil is set as a guide area, the middle part is set as a metal belt, the metal belt is distributed in an oblique circle, an arc contact area is formed inside it, and the tail is set as a transition area.

[0015] As a preferred embodiment of the above technical solution, the needle contact piece is an integrated structure, including a docking area at the front end, a positioning step and a barb structure in the middle, and a second needle body at the rear end.

[0016] As a preferred embodiment of the above technical solution, the second needle body includes a welding area, and.

[0017] The beneficial effects of the present invention are:

[0018] 1. When the pin-end connector and the hole-end connector of the present invention are connected and separated, they pass through three sections of guides in sequence, wherein the head side wall and the guide hole side wall are located in the air gap on the hole-end connector, which limits the first insertion (separation) of one end of the connector, and can only be inserted (separated) in parallel, which can prevent the occurrence of skewed insertion (separation) and damage to the contact parts;

[0019] 2. The pin-end connector and the hole-end connector involved in the present invention are both straight structures. The connector adopts a rigid pin and a micro-reed jack structure. The pin contact and the micro-reed form a plurality of circumferentially distributed contact points. The circumferential distribution positions of the plurality of contact points are different as the axial position of the pin contact is different, but each radial section has a corresponding plurality of contact points for contact, which has the advantages of reliable contact and strong vibration and impact resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure shows the overall structure of a gusset plate connector with reliable contact and anti-slant insertion and removal in an embodiment;

[0021] Figure 2 The structure diagram of a plug-in connector at the middle hole of a gusset plate plug-in connector with reliable contact and anti-slant plug-in and pull-out in an embodiment is shown;

[0022] Figure 3 The structure diagram of a pin-end connector in a pinch plate connector with reliable contact and anti-slant insertion and removal in an embodiment is shown;

[0023] Figure 4 The structure diagram of a socket assembly in a pinch plate connector with reliable contact and anti-slant insertion and removal in an embodiment is shown;

[0024] Figure 5 The exploded view of a socket assembly in a pinch plate connector with reliable contact and anti-slant insertion and removal in an embodiment is shown;

[0025] Figure 6 The structure diagram of the pin contact in a pinch plate connector with reliable contact and anti-slant insertion and removal in the embodiment is shown;

[0026] Figure 7 The figure shows a connection diagram between a micro spring coil and a pin contact piece in a buckle plate connector with reliable contact and anti-slant insertion and removal in an embodiment;

[0027] Figure 8 Shown is a cross-sectional view of a butt joint between a hole-end connector and a pin-end connector in a pinch plate connector with reliable contact and anti-slant insertion and removal in an embodiment.

[0028] In the figure: 1, hole end connector; 10, seat shell; 11, seat base; 12, socket assembly; 13, guide column; 130, air gap; 14, first locking accessory; 15, first potting glue; 120, round protective tube; 121, micro spring coil; 122, weldable needle body; 123, crimping needle body; 124, ball implanting needle body; 1201, round chamfer; 1202, step structure; 1203, round through hole; 1210, guide area; 1211, metal belt; 1212, transition area; 1220, first connecting column; 1221, first convex rib structure; 1222, welding column; 1230, second connecting column; 1231, second convex rib structure; 1232, crimping terminal; 1240, third connecting column; 1241, third convex rib structure; 1 242. Support column; 1243. Small solder ball; 2. Pin-end connector; 20. Head shell; 201. Head side wall; 21. Head base; 210; 22. Pin contact; 23. Guide hole; 24. Second locking accessory; 25. Second potting compound; 220. Soldering pin; 221. Crimp pin; 222. Ball-planting pin; 2201. First docking area; 2202. First positioning step; 2203. First barb structure; 2204. Soldering area; 2211. Second docking area; 2212. Second positioning step; 2213. Second barb structure; 2214. Crimp area; 2221. Third docking area; 2222. Third positioning step; 2223. Third barb structure; 2224. Small solder ball; 12110. Contact bump. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0030] See also Figure 1 The hole-end connector 1 is a long straight rectangular structure, the guide post accessory and the socket contact are located on the same side, the guide post accessory is located at both ends of the rectangular structure, and is inside the shell and surrounded by the shell, the socket contact is located in the middle area and arranged at a smaller pitch, which realizes the miniaturization requirement of the connector, the hole-end connector 1 is locked with the PCB board by the accessory, and the contact and the PCB can be connected by through-hole welding, crimping, reflow soldering and other processes.

[0031] The pin-end connector 2 is also a long straight rectangular structure, with the guide hole accessories and the pin contact located on one side. The guide hole accessories are located at the two end edges of the rectangular structure and are inside the shell and surrounded by the shell. The pin contact is located in the hole of the middle base and is protected by the base. The pin-end connector 2 is locked with the PCB board by the accessories, and the contact and the PCB can be connected by through-hole welding, crimping, reflow soldering and other processes.

[0032] See also Figure 2 The female end connector 1 is composed of a base shell 10, a base 11, a plurality of jack fittings 12, two guide posts 13, two sets of first locking accessories 14 and a certain amount of first potting glue 15. The jack fitting 12 is inserted into the stepped hole on the base 11 from the rear end thereof, and has a forward limiting step in the axial direction. After assembly, the fitting is then installed into the inner cavity on the base shell 10, and then a certain amount of first potting glue 15 is potted, thereby realizing reliable fixation of the base 11 and the plurality of jack fittings 12 in the base shell 10.

[0033] The two guide posts 13 are respectively inserted into the corresponding positions at both ends from the recessed part of the seat shell 10, and then two sets of first locking accessories 14 are used to lock from the bottom end of the seat shell 13 to fix the guide posts 13. The head end of the guide post 13 protrudes from the recessed part, and can be firstly butted and plugged when the hole end connector 1 and the pin end connector 2 are plugged in.

[0034] See also Figure 3 The pin-end connector 2 is composed of a head shell 20, a head base 21, a plurality of pin contacts 22, two guide holes 23, two sets of second locking accessories 24 and a certain amount of second potting glue 25. The plurality of pin contacts 22 are installed into the step holes on the head base 21 from the tail end thereof, and have a forward limiting step in the axial direction. After assembly, the assembly is installed into the inner cavity on the head shell 20, and then a certain amount of second potting glue 25 is potted, thereby realizing reliable fixation of the head base 21 and the plurality of pin contacts 22 in the head shell 20.

[0035] The two guide holes 23 are respectively inserted from the corresponding positions of the inner cavity on both sides of the protruding part of the head shell 20, and then two sets of second locking accessories 24 are used to lock from the bottom end of the head shell 20 to achieve the fixation of the guide holes 23 in the head shell 20. The guide holes 23 are in the inner cavity of the protruding part of the head shell 20, and the head end thereof is flush with the edge of the head shell 20, so that the docking end jack fitting 12 will not be damaged during docking, and a better guiding and protective function can be achieved.

[0036] See also Figure 4 The socket assembly 12 is a three-body structure, including a round protective tube 120 structure, a micro spring coil 121 and a needle body structure, wherein the needle body structure is divided into a welding type needle body 122 structure, a crimping type needle body 123 structure and a ball implant type needle body 124 structure according to the different installation methods of the connector and the PCB board.

[0037] See also Figure 5The round protective tube 120 structure included in the socket fitting 12 is a cylindrical structure, which is formed by machining. Its upper mouth is designed with a round chamfer 1201 structure for guiding, and the root part is a step structure 1202 for limiting. The middle is a round through hole 1203 structure for assembling the micro spring coil 121, and the end of the round through hole 1203 is used to press fit with the micro spring coil 121 to form an extrusion fit to realize the assembly of the socket fitting 12.

[0038] The micro spring coil 121 structure included in the jack fitting 12 is a cylindrical structure, which is formed by stamping a metal mold. The upper part is designed with a transition zone 1210 for guiding during docking. The middle part is a plurality of metal belts 1211 that are bent inwardly in an arc shape. The metal belts are distributed in a certain angle circle, forming an arc contact area inside. The tail end of the micro spring coil 121 structure is a transition zone 1212, the inside of which is used to connect with the needle body to form a fitting, and the outside of which is used to connect with the round through hole 1203 on the round protective tube 120.

[0039] The pin body part included in the socket assembly (12) is divided into three types, namely, a welding pin body 122, a crimping pin body 123 and a ball implanting pin body 124. The welding pin body 122 is a cylindrical structure, formed by machining, and has a first connecting column 1220 for squeezing a connector with a micro spring coil 121 in the upper head, a first convex rib structure 1221 for interference fit with the seat base 11 in the middle region, and a welding pin 1222 for welding with the PCB in the tail region. The crimping pin body 123 is a cylindrical structure, formed by machining and stamping, and has a first connecting column 1230 for squeezing a connector with a micro spring coil 121 in the upper head, a first convex rib structure 1231 for interference fit with the seat base 11 in the middle region, and a crimping terminal 1232 for crimping with the PCB in the tail region. The ball-implanted needle body 124 is a cylindrical structure formed by machining. The upper head is designed with a first connecting column 1240 for extruding the connector with the micro spring coil 121, the middle area is designed with a first rib structure 1241 that is interference fit with the seat base 11, and the tail end area structure is designed as a support column 1242, and its end face is connected to the small solder ball 1243 by high-temperature hot melting.

[0040] See also Figure 6According to the different installation methods of the pin-end connector 2 and the PCB board, the pins 22 are divided into three types: welding type pins 220, crimping type pins 221 and ball-planting type pins 222. Among them, the welding type pin 220 is an integrated structure, which is cylindrical as a whole and is formed by machining. The front end is designed with a first docking area 2201 for docking and conduction functions, the middle is designed with a first positioning step 2202 for axial positioning and a first barb structure 2203 for its fixing function, and the tail end is designed as a welding area 2204 with a circular structure for welding and conduction with the PCB board. The crimping type pin 221 is an integrated structure, with a cylindrical front end and a thin sheet structure at the tail end, which is formed by machining and punching. The crimping type pin 221 and the soldering type pin 220 are different only in the tail structure, and the other parts are the same in structure, that is, the front end is designed with a second docking area 2211 for docking and conduction, the middle is designed with a second positioning step 2212 for axial positioning and a second barb structure 2213 for fixing, and the tail end is designed as a thin-sheet, fish-eye structure crimping area 2214 for crimping and conducting with the PCB board. The ball-planting type pin 222 is a two-body structure, including a needle body part and a small solder ball 2224, and is cylindrical as a whole and formed by machining. The ball implanting type pin 222 and the welding type pin 220 are different only in the tail end structure, and the other parts have the same structure, that is, a third docking area 2221 for docking and conduction functions is designed at the front end, a third positioning step 2222 for axial positioning and a third barb structure 2223 for fixing are designed in the middle, and the small solder ball 2224 is welded to the needle body into one through the hot ball implanting process at the tail end for BGA welding with the PCB board.

[0041] See also Figure 7 When the contacts are docked, the first docking area 2201 of the needle contact 22 first passes through the guide area 1210 at the front end of the micro-spring 121. The guide area 1210 is a circular structure with a small chamfer at the mouth, which has a secondary guiding function. The protective tube is a primary guide, which can ensure smooth docking of the needle contact 22. After the contacts are docked, the first docking area 2201 of the needle contact 22 is located in the metal belt 1211 area of ​​the micro-spring 121. Each metal belt 1211 is arched inwardly, and a contact convex bulge 12110 is designed in the middle. Multiple contact convex bulges 12110 form an inscribed circle, forming multiple contact points evenly distributed around the circumference with the surface of the first docking area 2201.

[0042] See also Figure 8When the hole-end connector 1 and the pin-end connector 2 are docked, the guide column 13 is first docked and guided with the guide hole 23 to ensure the initial positioning of the entire hole-end connector 1 and the pin-end connector 2. Here, the guide column 13 and the socket assembly 12 are located on both sides, and the guide column 13 will not damage the contact parts when it is deflected; then, the air gap 130 of the seat shell 10 and the head side wall 201 of the head shell 20 are guided and accurately positioned, and finally the socket assembly 12 is docked with the corresponding base hole 210 on the head base 21. After the hole-end connector 1 and the pin-end connector 2 are docked in place, the head side wall 201 is located within the air gap 130 on the hole-end connector 1.

[0043] When the socket-end connector 1 and the pin-end connector 2 are separated, the head side wall 201 fills the air gap 130, thus limiting the situation where one end of the connector separates first while the other end does not separate, thereby preventing skewed separation from damaging the socket assembly 12 or the pin contact 22.

[0044] In addition, in the present invention, the pin contact member 22 is located in the base hole 210, and the socket assembly 12 is exposed to the outside, so that the weaker contact member is protected and the stronger contact member is exposed to the outside, which can prevent the contact member from being accidentally damaged.

[0045] The pin-end connector 1 and the hole-end connector 2 involved in the present invention are both straight structures. The connector design is protected by a metal shell and has good mechanical properties and shielding properties. The contact piece adopts a rigid pin and a miniature reed-type jack structure, which has the characteristics of reliable contact and strong vibration and impact resistance. The special design of the contact piece and the shell can effectively prevent the connector from being plugged in and out at an angle and damaging the contact piece. The termination structure design of various contact pieces can meet the needs of customers for different assembly processes.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A gusset plate connector with reliable contact and anti-slant plugging and unplugging, characterized in that: include: A female end connector (1), the female end connector (1) comprising a seat shell (10), a recessed portion being arranged on the mating side of the seat shell (10) and the pin end connector (2), guide columns (13) protruding from the recessed portion being arranged on both sides of the recessed portion, an air gap (130) being formed between the guide columns (13) and the side surface of the recessed area, a seat base (11) being arranged in the middle of the recessed area, a socket fitting (12) being mounted on the seat base (11), and a height of a side of the socket fitting (12) close to the pin end connector (2) after being mounted is less than a depth of the recessed portion; A needle-end connector (2), the needle-end connector (2) comprising a head shell (20), a protrusion matched with a recessed portion being arranged on the mating side of the head shell (20) and the hole-end connector (1), guide holes (23) matched with guide columns (13) being arranged on both sides of the protrusion, a head side wall (201) being formed between the guide holes (23) and the outer side of the protrusion, and the head side wall (201) being matched with an air gap (130), a head base (21) being installed in the middle of the head shell (20), and the head base (21) being flush with the protrusion and mating with one side of the hole-end connector (1) after installation, and a needle contact piece (22) being installed inside the head base (21); When the hole-end connector (1) and the pin-end connector (2) are docked, the guide column (13) is first inserted into the guide hole (23) to achieve preliminary positioning, and then the head side wall (201) is inserted into the air gap (130) to achieve two-round positioning, and then the socket assembly (12) is inserted into the head base (21) to achieve three-round positioning. After the three-round positioning, the socket assembly (12) and the pin contact assembly (22) are finally plugged in to achieve lossless and precise docking.

2. A gusset plate connector with reliable contact and anti-slant insertion according to claim 1, characterized in that: The hole-end connector (1) further comprises a first locking accessory (14) and a first potting glue (15); The first locking accessory (14) is installed at the bottom end of the guide column (13), and the first potting glue (15) is used to fix the seat base (11) and the socket fitting (12) in the seat shell (10).

3. A gusset plate connector with reliable contact and anti-slant plugging and unplugging according to claim 1, characterized in that: The socket assembly (12) is a three-body structure, comprising a round protective tube (120), a micro spring coil (121) and a first needle body.

4. A gusset plate connector with reliable contact and anti-slant plugging and unplugging according to claim 3, characterized in that: The first needle body comprises a welding needle body (122), a crimping needle body (123) and a ball implanting needle body (124).

5. A gusset plate connector with reliable contact and anti-slant plugging and unplugging according to claim 3, characterized in that: The upper opening of the circular protective tube (120) is configured as a round chamfer (1201), the root of the circular protective tube (120) is configured as a step structure (1202), the middle of the circular protective tube (120) is configured as a round through hole (1203) adapted to the micro spring coil (121), and the end of the round through hole (1203) is used for press-fitting the micro spring coil (121); The upper part of the micro spring coil (121) is set as a guide area (1210), the middle part is set as a metal belt (1211), the metal belt (1211) is distributed in an oblique circular shape, and an arc contact area is formed inside it, and the tail part is set as a transition area (1212).

6. A gusset plate connector with reliable contact and anti-slant insertion according to claim 1, characterized in that: The needle contact piece (22) is an integrated structure, comprising a docking area at the front end, a positioning step and a barb structure in the middle, and a second needle body at the rear end.

7. A gusset plate connector with reliable contact and anti-slant plugging according to claim 6, characterized in that: The second needle body includes welding areas (2204), (2214) and (2224).

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