CN118137220A - Hand-push type zero-plug-force plug connector - Google Patents

Abstract

A hand-push type zero-insertion-and-extraction-force plug connector comprises a connector shell, a signal needle group and a locking mechanism, wherein the signal needle group and the locking mechanism are arranged in the connector shell; the signal needle group is provided with two rows of signal needle rows which are arranged in parallel at intervals, the locking mechanism is a cam shaft, both ends of which are fixedly connected with a lock hook and a driving wheel, and the cam shaft is rotatably arranged between the two rows of signal needle rows; the connector shell is internally provided with a connecting rod mechanism for connecting the driving wheel to drive the cam shaft to rotate, a sliding block at the end part of the connecting rod mechanism is arranged on the side surface of the connector shell in a sliding way, and the part of the sliding block, which is positioned outside the connector shell, is used as a control part of the connecting rod mechanism; the connector comprises a connector shell, wherein two sides of the connector shell, which are positioned on two sides of the plugging direction, are provided with inclined sections, the width between the two inclined sections is gradually reduced from front to back, and the sliding blocks are arranged along the inclined sections in a sliding manner. The invention can realize the locking and the conduction of the contact piece by pushing the sliding block in the plugging process without additional actions, thereby simplifying the plugging operation of the connector.

Description

Hand-push type zero-plug-force plug connector

Technical Field

The invention belongs to the field of connectors, and particularly relates to a hand-push type zero-insertion-and-extraction-force plug connector.

Background

In medical ultrasonic diagnostic apparatuses, there are cart-type ultrasonic diagnostic apparatuses and portable ultrasonic diagnostic apparatuses, and portable ultrasonic diagnostic apparatuses are often used for outdoor diagnosis and mobile diagnosis, and because of their great mobility, portable ultrasonic diagnostic apparatuses are applied in a large number, and are small in size, similar to a notebook computer, thin in thickness direction and not large in width direction, while commonly used ultrasonic probes include phased array probes, convex array probes and linear array probes, so that three probe connector interfaces are required to be provided on one side of the ultrasonic diagnostic apparatus in the width direction, and thus the connectors used for connection with the ultrasonic probes are required to have the characteristic of being flat, secondly, the connectors are arranged in parallel in the width direction, and an operating space for fingers is required, thirdly, the thickness direction of a host computer is thin, and no finger operating space is required in the thickness direction of the connectors.

While satisfying the above three characteristics, the ultrasonic connector is required to have the characteristics of multi-core transmission, the contact terminals are required to meet a certain number to realize good imaging quality, the existing connector is usually a double-row terminal, the contact pitch is very small, the opposite insertion form is a hard friction golden finger connection form, namely one end of the connector is rigid, and the other end is elastic, when the connector is inserted and pulled out, the elastic contact piece is firstly contacted with the rigid contact piece, and then the friction along the insertion and pulling direction is consistent with the insertion and pulling out of the connector, so that the structure form has the following problems:

(1) When the connector is inserted, hard friction exists between terminals, so that the insertion force is large, and the service life of the connector is low.

(2) The locking mechanism between the plug and the socket is inconvenient to use, and after the plug and the socket are plugged, additional actions are needed to lock the plug and the socket, so that the plug is inconvenient to plug.

Disclosure of Invention

The invention aims to provide a hand-push type zero-insertion-and-extraction-force plug connector, wherein the operation direction of a control locking mechanism on the plug connector is consistent with the insertion and extraction direction of the plug connector, so that the insertion and the locking operation of the connector are facilitated, the zero-insertion-and-extraction force of the connector is realized, and the abrasion to a terminal is reduced.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a hand-push type zero-insertion-and-extraction-force plug connector comprises a connector shell, a signal needle group and a locking mechanism, wherein the signal needle group and the locking mechanism are arranged in the connector shell; the signal needle group is provided with two rows of signal needle rows which are arranged in parallel at intervals, the locking mechanism is a cam shaft, both ends of which are fixedly connected with a lock hook and a driving wheel, and the cam shaft is rotatably arranged between the two rows of signal needle rows; the connector shell is internally provided with a connecting rod mechanism for connecting the driving wheel to drive the cam shaft to rotate, a sliding block at the end part of the connecting rod mechanism is arranged on the side surface of the connector shell in a sliding way, and the part of the sliding block, which is positioned outside the connector shell, is used as a control part of the connecting rod mechanism;

At least one side face, located at two sides of the plugging direction, of the connector shell is provided with an inclined section, the width of the shell at the position of the inclined section gradually decreases from front to back, and the sliding block is arranged along the inclined section in a sliding mode.

The beneficial effects are as follows: the inclined section on the connector shell can form a space for finger operation, so that fingers can conveniently hold, insert and pull the sliding block, control over the locking mechanism is realized, and then the signal needle row is outwards ejected to be in contact with the socket terminal when the socket connector is locked, so that signal transmission is realized.

The sliding direction of the sliding block is consistent with the inserting and pulling direction of the plug connector, so that the socket connector is locked without additional actions in the inserting and pulling process, and the connecting operation of the connector is simplified.

Before the link mechanism acts, the cam shaft does not squeeze the signal pin row, the signal pin row is not contacted with the socket terminal, at the moment, the plug connector is in zero plug force, and abrasion of the socket terminal is not caused; when the plug connector is plugged with the socket connector, the sliding block slides forwards to push the cam shaft to rotate, the cam extrudes two signal pin rows, and the contact parts at the front ends of the two signal pin rows are outwards popped up to be in contact with the socket terminals, so that contact conduction between the signal pins and the socket terminals is realized.

Further, the connecting rod mechanism further comprises a first connecting rod, a sliding frame and a second connecting rod, wherein two ends of the first connecting rod are respectively and rotatably connected with the sliding block and the sliding frame, and two ends of the second connecting rod are respectively and rotatably connected with the sliding frame and the driving wheel; the rotation axes of the two ends of the first connecting rod are parallel, the rotation axes of the two ends of the second connecting rod are parallel to the cam shaft, and the rotation axes of the two ends of the first connecting rod are perpendicular to the rotation axes of the two ends of the second connecting rod.

The beneficial effects are as follows: the sliding frame is utilized to link the actions of the first connecting rod and the second connecting rod at the left side and the right side, so that synchronous rotation of the locking hooks at the two ends of the cam shaft is facilitated, and reliable locking of the locking hooks at the two ends and the clamping nails on the socket connector is ensured. By limiting the rotation axes of the first connecting rod and the second connecting rod, the first connecting rod can move in the width direction of the plug connector, and the thickness of the plug connector is reduced as much as possible by utilizing the width space of the connector.

Straight edge sections are arranged on two sides of the connector shell, and the extending direction of the straight edge sections is parallel to the inserting and combining direction of the connector; the two ends of the sliding frame slide along the straight edge section.

The beneficial effects are as follows: and the straight edge sections on the two sides limit the sliding frame.

The sliding frame is provided with a guide groove, and a guide block which can be matched with the guide groove is arranged in the connector shell.

The beneficial effects are as follows: the cooperation of the guide groove and the guide block can provide guidance for the sliding of the sliding frame.

The signal needle group comprises two signal needle parts which are oppositely arranged, the signal needle parts comprise an insert insulator and signal needle rows which are arranged on the insert insulator, and the signal needle rows comprise a plurality of signal needles which are arranged at intervals.

The beneficial effects are as follows: an embodiment of a signal pin set is provided, wherein two signal pin components are convenient to assemble, disassemble and replace.

The signal pin group comprises an insert insulator and two rows of signal pin rows arranged on the insert insulator, wherein each signal pin row comprises a plurality of signal pins which are arranged at intervals.

The beneficial effects are as follows: another embodiment of the signal pin set is beneficial to ensuring the one-to-one correspondence of the signal pins in the two signal pin rows.

The connector is characterized in that a printed circuit board is further arranged in the connector shell, contact plates of the printed circuit board are distributed on two sides of the circuit board, and the contact plates on the two sides correspond to each other one by one; the contact plates on the two sides of the printed circuit board are elastically contacted with the convex contact parts at the tail ends of the two rows of signal pin rows.

The beneficial effects are as follows: the printed circuit board does not need to be welded with the signal pins, so that the problem of poor signal transmission caused by insufficient solder, continuous tin and the like in a welding mode can be avoided, the product qualification rate is improved, and the product assembly cost is reduced.

The width of the front end of the printed circuit board is matched with the distance between two guide blocks arranged in the connector shell, and the two guide blocks limit the assembly of the printed circuit board.

The beneficial effects are as follows: the guide block can ensure the centering effect of the printed circuit board and ensure the reliable contact of the contact disc on the printed circuit board and the signal pin in one-to-one correspondence.

The distance between the contact plates on the two sides of the printed circuit board is larger than the distance between the protruding contact parts of the two signal pin rows in the signal pin group in a natural state.

The beneficial effects are as follows: when the printed circuit board is inserted between the two signal pin rows, the two signal pin rows can be extruded to deform, and the convex contact part of the signal pin and the contact disc of the printed circuit board are ensured to reliably contact by utilizing the elastic force of deformation.

A circuit board fixing frame is arranged in the connector shell, and a clamping groove capable of fixing the tail end of the printed circuit board is formed in the circuit board fixing frame.

The beneficial effects are as follows: the use of the circuit board fixing frame can fix the printed circuit board, and can also clamp the printed circuit board by utilizing the clamping groove on the circuit board fixing frame, so that the printed circuit board is prevented from retreating in the connector inserting process, and the reliable contact between the contact disc of the printed circuit board and the terminal of the connector is ensured.

The connector is characterized in that an insulating pressing plate is arranged in the connector shell, accommodating cavities for accommodating signal pins of the signal pin rows and providing deformation spaces for protruding contact parts of the signal pins are arranged on the insulating pressing plate, the number of the accommodating cavities is consistent with and corresponds to the number of the signal pins of the signal pin rows one by one, and slots for the insertion of the printed circuit board are formed in the insulating pressing plate.

The beneficial effects are as follows: the insulation pressing plate provides protection and support for the tail ends of the signal pins, and when the printed circuit board is inserted between the two rows of signal pins, the protruding contact parts of the two rows of signal pins can only deform and move back in the accommodating cavity, so that contact between the signal pins is avoided.

And a guide key is arranged on one surface of the insulating pressing plate opposite to the slot, and the guide key is provided with a guide inclined surface for guiding the signal needle to enter the corresponding accommodating cavity.

The beneficial effects are as follows: the guide key can divide the accommodating cavity into two rows to accommodate two rows of signal pins respectively, and the guide inclined plane of the guide key can guide the two rows of signal pins to enter the corresponding accommodating cavity respectively.

The length of insulating clamp plate and two guide block interval looks adaptations that set up in the connector housing still are provided with the constant head tank respectively insulating clamp plate's both ends be provided with on the guide block with constant head tank complex fixed slot, constant head tank and fixed slot pass through the fixed pin to realize insulating clamp plate fixed in the connector housing.

The beneficial effects are as follows: when the insulating pressing plate is installed, the two guide blocks can limit the insulating pressing plate, so that the accommodating cavity of the insulating pressing plate corresponds to the signal needle; the fixing between the positioning groove and the fixing groove can be realized through the fixing pin, and the fixing is detachable and fixed, so that the connector is convenient to maintain and replace related parts in the later period.

The beneficial effects of the invention are as follows: 1. the plug connector adopts the connecting rod mechanism as a control piece for realizing the locking of the plug and the socket and the conduction of the contact piece, and the sliding direction of the sliding block of the control connecting rod mechanism is consistent with the plugging direction of the plug connector, so that the sliding block can be pushed to realize the locking and the conduction of the contact piece without extra action in the plugging process of the head seat, and the plugging operation of the connector is simplified.

2. The inclined section is arranged in the width direction of the plug connector, so that a space for finger operation can be reserved, and the plug connector is convenient to plug in and pull out in a small space.

3. The first connecting rod in the connecting rod mechanism moves in the width direction of the connector, so that the size space of the width of the connector can be fully utilized, the thickness size of the connector can be reduced, and the application requirement of a small space can be met; the second connecting rod moves in the thickness direction of the connector, so that the linear motion of the sliding frame can be converted into the rotation of the cam shaft, and the contact conduction of the plug and the socket contact piece is realized while the locking is realized.

4. The printed circuit board adopts a welding-free assembly mode, solves the problem of poor signal transmission caused by cold joint, tin connection and the like existing in welding between the printed circuit board and the connector, improves the product qualification rate and reduces the product assembly cost.

Drawings

FIG. 1 is an exploded view of the structure of the present invention;

FIG. 2 is a schematic diagram illustrating the cooperation between the link mechanism and the cover plate of the housing in embodiment 1;

FIG. 3 is a schematic view of the locking mechanism in embodiment 1;

fig. 4 is a schematic structural view of the plug housing in embodiment 1;

FIG. 5 is a schematic diagram showing the cooperation of the link mechanism and the plug housing in embodiment 1;

FIG. 6 is a schematic view of the locking mechanism in the unlocked state in embodiment 1;

FIG. 7 is a schematic view of the locking mechanism in the locked state in embodiment 1;

FIG. 8 is a cross-sectional view of the cam shaft position of the lock mechanism of embodiment 1 in the unlocked state;

FIG. 9 is a cross-sectional view of the latch mechanism of embodiment 1 in the unlatched condition at the latch hook position;

FIG. 10 is a sectional view of the lock mechanism in the embodiment 1 in the locked state at the position of the cam shaft;

FIG. 11 is a cross-sectional view of the locking mechanism of embodiment 1 in the locked state in the locked hook position;

fig. 12 is an assembly schematic diagram of the printed circuit board and the plug housing in embodiment 2;

FIG. 13 is a cross-sectional view of FIG. 12;

fig. 14 is a schematic structural diagram of a printed circuit board in embodiment 2;

fig. 15 is a schematic structural view of a signal pin member in embodiment 2;

Fig. 16 is a schematic structural view of an insulating platen in embodiment 2;

Fig. 17 is an assembly schematic of the insulating pressing plate on the connector housing in embodiment 2.

The marks in the figure: 1. plug housing, 101, guide block, 102, signal pin mounting hole, 103, fixed slot, 2, link mechanism, 201, slider, 202, first link, 203, sliding frame, 204, second link, 205, guide slot, 3, signal pin member, 301, signal pin, 302, protruding contact, 303, insert insulator, 304, groove, 305, bead, 4, inclined side, 5, insulating pressing plate, 501, accommodating cavity, 502, guide key, 503, positioning slot, 504, guide slope, 6, printed circuit board, 7, circuit board holder, 8, screw, 9, housing cover, 10, locking mechanism, 1001, cam shaft, 1002, latch hook, 1003, driving wheel, 11, insulator shield, 12, press block, 13, mounting cavity, 14, fixing pin.

100. Plug connector 200, socket connector 200-1, socket terminal 200-2, staple.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples, which are not intended to be limiting. The front and the back are based on the inserting direction of the connector, the inserting end of the connector is the front, and the wire outlet end of the connector is the back.

Example 1: referring to fig. 1, the hand-push type zero-insertion-and-extraction-force plug connector comprises a plug shell 1, a connecting rod mechanism 2, a signal pin component 3, a shell cover plate 9 and a locking mechanism 10. The plug housing 1 and the housing cover plate 9 are connected through a screw 8 to form a flat connector housing, the signal pin part 3 is arranged at the connector plugging end, the locking part 10 is arranged between two rows of signal pins of the signal pin part 3, the link mechanism 2 is used for driving the locking mechanism 10 to act so as to lock and unlock the plug connector and the socket connector, and the link mechanism 2 is arranged on the side surface of the plug connector. The connector inserting end is further provided with an insulator shield 11 positioned in front of the signal pin component 3, two ends of the insulator shield 11 are fixed on the plug housing 1 through bolts 8 by pressing blocks 12, the insulator shield 11 is provided with a slot, and a socket terminal of the socket connector is inserted into the connector inserting end of the plug connector through the slot.

The middle part of the connector housing formed by the plug housing 1 and the housing cover 9 is gradually reduced in width from front to back, so that inclined sections for facilitating the handling operation are formed on both sides of the middle part of the plug connector. Correspondingly, inclined sides 4 for forming the inclined section are provided on both sides of the middle of the plug housing 1, and a beveled edge for forming the inclined section is provided in the middle of the housing cover 9.

As shown in fig. 2, the link mechanism 2 includes a slider 201, a first link 202, a sliding frame 203 and a second link 204, wherein the width of the sliding frame 203 is adapted to the width of the straight edge portion at the front end of the housing cover 9, so that two ends of the sliding frame 203 in the width direction can be attached to the inner wall of the straight edge portion of the housing cover 9 to slide, thereby playing a role in guiding the sliding frame 203 to slide back and forth, one end of the first link 202 is rotationally connected with the slider 201, and the other end is rotationally connected with the sliding frame 203; one end of the second connecting rod 204 is rotatably connected with the sliding frame 203, and the other end is connected with the locking mechanism 10. The rotational axis of both ends of the first link 202 and the rotational axis of both ends of the second link 204 are perpendicular, so that the first link 202 moves in the width direction of the plug connector and the second link 204 moves in the thickness direction of the plug connector.

The sliding frame 203 is slidably disposed at the front portion of the housing cover 9, two ends of the sliding frame 203 in the width direction are attached to the inner wall of the straight edge of the front portion of the housing cover 9, and a chute on one side of the sliding block 201 is slidably disposed on the inclined edge of the middle portion of the housing cover 9. The left side and the right side of the middle part of the shell cover plate 9 are respectively provided with a bevel edge, the two sliding blocks 201 are respectively arranged along the two bevel edges in a sliding way, and the two first connecting rods 202 are respectively connected with the two sliding blocks 201. The second links 204 are provided in two, and are connected to both ends of the slide frame 203 in the width direction. Two guide grooves 205 are further provided on the side of the sliding frame 203 facing the locking mechanism 10, and the two guide grooves 205 are distributed at two ends of the sliding frame 203 in the width direction.

As shown in fig. 4, two guide blocks 101 are provided on both sides of the signal pin mounting hole 102 in the plug housing 1, and the guide groove 205 cooperates with the guide blocks 101 to guide the slide frame 203 when the slide frame 203 slides. As shown in fig. 5, when the link mechanism 2 is mounted in cooperation with the plug housing 1, both ends of the sliding frame 203 in the width direction are simultaneously in contact with two straight edges of the plug housing 1 for mounting the housing cover plate 9, and a sliding groove on the other side of the sliding block 201 is slidably disposed at the edge of the inclined side surface 4 of the plug housing 1. After the housing cover 9 is buckled with the plug housing 1, the sliding block 201 is clamped between the housing cover 9 and the plug housing 1, and the inclined side 4 of the plug housing 1 is matched with the inclined side of the housing cover 9 as the inclined section, so that the sliding block 201 is pushed by a finger to slide, and the sliding frame 203 slides forwards and backwards.

As shown in fig. 3, the locking mechanism 10 includes a cam shaft 1001, a latch hook 1002 and a driving wheel 1003, wherein a cam is provided on the cam shaft, the cam section has a long axis and a short axis which are angled with each other, the latch hook 1002 and the driving wheel 1003 are fixedly mounted at both ends of the cam shaft 1001, and the hook body direction of the latch hook 1001 and the radial protrusion on the driving wheel 1003 are respectively located at both sides of the rotation axis of the cam shaft 1001. The latch hook 1002 and the cam rotate synchronously with the cam shaft 1001, the radial protruding part on the driving wheel 1003 is rotationally connected with the second connecting rod 204, the second connecting rod 204 acts on the driving wheel 1003 to drive the cam shaft 1001 to rotate, so that the latch hook 1002 rotates, and the latch hook 1002 is locked or unlocked with a clamp on the socket connector.

As shown in fig. 6, 8 and 9, when the plug connector and the receptacle connector are plugged and unlocked, the two ends of the short axis of the cam section on the cam shaft 1001 are contacted with the signal pins on the two sides of the cam shaft 1001, at this time, the contact part of the front end of the signal pin member 3 is not contacted with the receptacle terminal 200-1 of the receptacle connector 200, and zero plugging force of the plug connector can be obtained. The slider 201 in the linkage mechanism 2 has two working positions, namely a locking position and an unlocking position. When the sliding block 201 slides backward to be in the unlocking position, the latch hook 1002 of the locking mechanism 10 is separated from the staple 200-2 of the socket connector 200, and the plug connector and the socket connector are in an unlocked state.

During locking, the fingers push the sliding blocks 201 at two sides of the connector forward, the sliding blocks 201 slide forward along the inclined section of the connector housing, the sliding frame 203 is pushed to slide forward along the straight edge under the action of the first connecting rod 202, and then the driving wheel 1003 is pushed forward to rotate by the second connecting rod 204, so that the cam shaft 1001 and the locking hook 1002 are driven to rotate until the sliding blocks 201 slide to the locking position, and at the moment, the hook body of the locking hook 1002 is hooked on the clamping nail 200-2 of the socket connector 200, so that the locking of the plug connector and the socket connector is realized, as shown in fig. 11. In this process, the cam shaft 1001 rotates, and as shown in fig. 10, the long shaft portion of the cam section on the cam shaft 1001 presses the signal pin outward, so that the contact portion of the front end of the signal pin member 3 is deformed and ejected outward to come into contact with the receptacle terminal 200-1.

The plug connector of the embodiment has the same plugging direction as the operation direction of the sliding block for forward sliding locking the socket connector when being plugged with the socket connector, so that the plug connector and the socket connector can be locked and the signal pin component can be contacted with the socket terminal when being plugged.

Example 2: this embodiment provides further optimization of the mounting structure of the printed circuit board in the header connector based on embodiment 1.

As shown in fig. 12 and 13, a mounting cavity 13 for mounting the printed circuit board 6 is reserved in the plug housing 1, the printed circuit board 6 is loaded into the plug housing 1 from back to front, a contact disc at the front end of the printed circuit board 6 is contacted with the signal pin of the signal pin component 3, and the tail end of the printed circuit board 6 is fixed by a circuit board fixing frame 7. The circuit board fixing frame 7 is provided with a clamping groove capable of fixing the tail end of the printed circuit board 6, and the circuit board fixing frame 7 is fixed in the plug shell 1 by screws.

As shown in fig. 14, the printed circuit board 6 is a board body with a wide front end and a narrow rear end, and the shape of the board body is matched with the shape of the mounting cavity 13. Contact plates 601 are respectively arranged on two side surfaces of the front end of the printed circuit board 6, the contact plates 601 on each surface are arranged along the width direction of the printed circuit board 6, the contact plates 601 are in one-to-one correspondence with the signal pins, and the contact plates 601 on two side surfaces of the printed circuit board 6 are in one-to-one correspondence.

In this embodiment, two opposite signal pin members 3 are disposed on the plug connector, each signal pin member 3 includes a row of densely arranged signal pins arranged at intervals, and the signal pins on the two signal pin members 3 are opposite one to one and are used for contacting with contact pads on two sides of the printed circuit board 6. Fig. 15 shows a schematic structure of a signal pin member 3, in which densely arranged signal pins 301 are fixed to an insert insulator 303, the front ends of the signal pins 301 are adapted to contact with socket terminals on a mating socket connector, and the rear ends of the signal pins 301 are provided with protruding contact portions 302 for contact with contact pads 601 of a printed circuit board 6. The insert insulator 303 is provided with a convex rib 305, and the convex rib 305 is used for realizing interference with the side wall of the plug housing 1, so as to achieve the effect of being strongly installed into the plug housing 1. The two signal pin members 3 are assembled by the male-female fit structure, as shown in fig. 15, a groove 304 is provided on the insert insulator 303, a protrusion is provided on the insert insulator 303 of the other signal pin member 3 corresponding to the groove, during assembly, the assembly of the two signal pin members 3 is realized by male-female fit of the protrusion and the groove, and then the two signal pin members 3 after assembly are strongly installed into the plug housing 1.

Alternatively, the insert insulator of the two signal pin members is of unitary construction, i.e., one signal pin member having two rows of opposing and one-to-one signal pins is mounted within the connector housing.

Optionally, the ribs may also be disposed on an inner wall of the connector housing, and may also implement a strong fixation of the insert insulator and the connector housing.

When the printed circuit board 6 is not put in place, the spacing between the convex contact portions 302 on the opposite signal pins 301 is smaller than the spacing between the contact pads 601 on the two sides of the printed circuit board 6, so that the contact pads 601 can push the convex contact portions 302 of the signal pins 301 open and reliably contact with the convex contact portions 302 by means of the elasticity of the signal pins 301 during the assembly process of the printed circuit board 6.

Further, the width of the front end of the printed circuit board 6 is also matched with the distance between the two guide blocks 101 in the plug housing 1, and in the assembly process of the printed circuit board 6, the guide blocks 101 can limit the printed circuit board 6, so as to ensure the centering effect of the printed circuit board 6, and further realize one-to-one corresponding contact between the contact disc 601 on the printed circuit board 6 and the signal pins 301 of the signal pin component 3 in the signal pin mounting hole 102.

Preferably, an insulating pressing plate 5 is further disposed in the plug housing 1, as shown in fig. 16, the insulating pressing plate 5 is provided with a receiving cavity 501 equidistant from the signal pins, and the receiving cavity 501 is separated by a partition board. A guide key 502 is further arranged on the insulating pressing plate 5 at one side facing the connector plugging end, the guide key 502 divides the accommodating cavities 501 into two rows, each row of accommodating cavities corresponds to one row of signal pins, and each accommodating cavity 501 accommodates one signal pin. Opposite side surfaces of the guide key 502 serve as a convex contact part 302 of the guide signal needle to enter a guide inclined surface 504 of the accommodating cavity 501, and the guide inclined surface 504 is obliquely arranged with low front and high rear. When the insulating pressing plate 5 is assembled in the direction shown in fig. 17, the convex contact portion 302 of the signal pin 301 slides into the corresponding accommodation chamber 501 along the guide slope 504 of the guide key 502. A slot for inserting the front end of the printed circuit board 6 is provided on the side of the insulating pressing plate 5 facing the printed circuit board 6, and the slot is communicated with the accommodating cavity 501, so that the convex contact portion 302 of the signal pin is in contact with the contact pad 601 of the printed circuit board 6.

As shown in fig. 17, the length of the insulating pressing plate 5 is adapted to the space between the inner surfaces of the two guide blocks 101 on the plug housing 1, and when the insulating pressing plate 5 is installed, the two guide blocks 101 can limit the insulating pressing plate 5, so as to ensure that the accommodating cavity 501 of the insulating pressing plate 5 corresponds to the signal pin 301. The two ends of the insulating pressing plate 5 in the length direction are also respectively provided with a positioning groove 503, the guide block 101 is provided with a fixing groove 103 matched with the positioning groove 503, after the insulating pressing plate 5 is assembled, the positioning groove 503 is opposite to the notch of the fixing groove 103, and a fixing pin 14 is inserted to fix the insulating pressing plate 5 on the plug housing 1.

The printed circuit board and the signal pin component in the embodiment are in contact connection in a welding-free mode, so that the problem of poor signal transmission caused by cold joint, tin connection and the like existing in welding between the printed circuit board and the connector is solved, the product qualification rate is improved, and the product assembly cost is reduced. The use of the circuit board fixing frame can fix the printed circuit board, and can also clamp the printed circuit board by utilizing the clamping groove on the circuit board fixing frame, so that the printed circuit board is prevented from retreating in the connector inserting process, and the reliable contact between the contact disc of the printed circuit board and the terminal of the connector is ensured.

The above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and it should be understood by those skilled in the art that modifications and equivalents may be made to the specific embodiments of the present invention with reference to the above embodiments, and any modifications and equivalents not departing from the spirit and scope of the present invention are within the scope of the claims appended hereto.

Claims (13)

1. A hand-push type zero-insertion-and-extraction-force plug connector comprises a connector shell, a signal pin group and a locking mechanism (10), wherein the signal pin group and the locking mechanism are arranged in the connector shell; the signal needle group is provided with two rows of signal needle rows which are arranged in parallel at intervals, the locking mechanism (10) is a cam shaft (1001) with two ends fixedly connected with a lock hook (1002) and a driving wheel (1003), and the cam shaft (1001) is rotatably arranged between the two rows of signal needle rows; the method is characterized in that: the connector shell is internally provided with a connecting rod mechanism for connecting the driving wheel to drive the cam shaft to rotate, a sliding block (201) at the end part of the connecting rod mechanism is arranged on the side surface of the connector shell in a sliding way, and the part of the sliding block (201) outside the connector shell is used as a control part of the connecting rod mechanism (2);

At least one side face of the connector shell, which is positioned on two sides of the plugging direction, is provided with an inclined section, the width of the shell at the position of the inclined section gradually decreases from front to back, and the sliding block (201) is arranged along the inclined section in a sliding way.

2. The push-on zero insertion force plug connector of claim 1, wherein: the connecting rod mechanism (2) further comprises a first connecting rod (202), a sliding frame (203) and a second connecting rod (204), wherein two ends of the first connecting rod (202) are respectively and rotatably connected with the sliding block (201) and the sliding frame (203), and two ends of the second connecting rod (204) are respectively and rotatably connected with the sliding frame (203) and the driving wheel (1003); the rotation axes of the two ends of the first connecting rod (202) are parallel, the rotation axes of the two ends of the second connecting rod (204) are parallel to the cam shaft (1001), and the rotation axes of the two ends of the first connecting rod (202) are perpendicular to the rotation axes of the two ends of the second connecting rod (204).

3. The push-on zero insertion force plug connector of claim 2, wherein: straight edge sections are arranged on two sides of the connector shell, and the extending direction of the straight edge sections is parallel to the inserting and combining direction of the connector; both ends of the sliding frame (203) slide along the straight edge sections.

4. The push-on zero insertion force plug connector of claim 2, wherein: the sliding frame (203) is provided with a guide groove (205), and the connector shell is internally provided with a guide block (101) which can be matched with the guide groove (205).

5. The push-on zero insertion force plug connector of claim 1, wherein: the signal pin group comprises two signal pin components (3) which are oppositely arranged, the signal pin components (3) comprise an insert insulator (303) and signal pin rows arranged on the insert insulator (303), and the signal pin rows comprise a plurality of signal pins (301) which are arranged at intervals.

6. The push-on zero insertion force plug connector of claim 1, wherein: the signal pin group comprises an insert insulator (303) and two rows of signal pin rows arranged on the insert insulator (303), wherein each signal pin row comprises a plurality of signal pins (301) which are arranged at intervals.

7. The push-on zero insertion force plug connector of claim 1, wherein: the connector is characterized in that a printed circuit board (6) is further arranged in the connector shell, contact plates (601) of the printed circuit board (6) are distributed on two sides of the circuit board, and the contact plates (601) on the two sides correspond to each other one by one; contact pads (601) on both sides of the printed circuit board (6) are elastically contacted with convex contact portions (302) at tail ends of two rows of signal pin rows.

8. The push-on zero insertion force plug connector of claim 7, wherein: the width of the front end of the printed circuit board (6) is matched with the distance between two guide blocks (101) arranged in the connector shell, and the two guide blocks (101) limit the printed circuit board (6).

9. The push-on zero insertion force plug connector of claim 7, wherein: the distance between the contact plates (601) on the two sides of the printed circuit board (6) is larger than the distance between the convex contact parts (302) of the two signal pin rows in the signal pin group in a natural state.

10. The push-on zero insertion force plug connector of claim 7, wherein: a circuit board fixing frame (7) is arranged in the connector shell, and a clamping groove capable of fixing the tail end of the printed circuit board (6) is formed in the circuit board fixing frame (7).

11. The push-on zero insertion force plug connector of claim 7, wherein: the connector is characterized in that an insulating pressing plate (5) is arranged in the connector shell, each signal pin used for accommodating a signal pin row is arranged on the insulating pressing plate (5), accommodating cavities (501) which are used for providing deformation spaces for the protruding contact parts (302) of the signal pins are arranged on the insulating pressing plate (5), the number of the accommodating cavities (501) is consistent with the number of the signal pins of the signal pin row, the number of the signal pins corresponds to one, and slots used for inserting the printed circuit board (6) are arranged on the insulating pressing plate (5).

12. The push-on zero insertion force plug connector of claim 11, wherein: the insulating pressing plate (5) is provided with a guide key (502) on the surface opposite to the slot, and the guide key (502) is provided with a guide inclined surface (504) for guiding the signal needle into the corresponding accommodating cavity (501).

13. The push-on zero insertion force plug connector of claim 11, wherein: the length of insulating clamp plate (5) and two guide blocks (101) interval looks adaptations that set up in the connector housing still are provided with constant head tank (503) respectively at the both ends of insulating clamp plate (5) be provided with on guide block (101) with constant head tank (503) complex fixed slot (103), constant head tank (503) and fixed slot (103) are connected through fixed pin (14) to realize insulating clamp plate (5) fixed in the connector housing.