CN114024172A

CN114024172A - Cable connector and connector assembly

Info

Publication number: CN114024172A
Application number: CN202111289156.2A
Authority: CN
Inventors: 杨文初; 唐辉; 李杭; 刘振兴; 熊海涛
Original assignee: Amphenol Assembletech Xiamen Co Ltd
Current assignee: Amphenol Assembletech Xiamen Co Ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-02-08
Anticipated expiration: 2041-11-02
Also published as: CN114024172B

Abstract

The invention discloses a cable connector and a connector assembly, which comprise a plastic main body, an electric contact body, a cable and a connector lock catch, wherein the connector lock catch comprises a pressing part, a connecting arm and a fixing part; the fixing part is arranged on the plastic main body, the pressing part and the fixing part are arranged at an inclined angle, and the front end surface of the pressing part protrudes out of the front end surface of the fixing part; the pressing part is provided with a plurality of clamping points, one end of each clamping point is a guide end for guiding insertion, the other end of each clamping point is a stop surface, the direction from the guide end to the stop surface is opposite to the direction of a U-shaped opening, and the direction of the U-shaped opening faces to the butt joint surface of the connector; and B is the distance between the stop surface and the front end of the pressing part, and A is the distance between the front end of the pressing part and the tail end of the connecting arm, so that B = (0.2-0.4) A. The lock catch can be unlocked easily only by applying slight pressing force. The connector assembly of the present invention can be made low in overall height, facilitating a miniaturized design.

Description

Cable connector and connector assembly

Technical Field

The invention relates to the field of electric connectors, in particular to a cable connector and a connector assembly.

Background

As shown in the patent publication No. CN112054323A, the U-shaped structure of the prior art connector latch structure faces inward, the stop surface of the latch point on the latch and the U-shaped opening of the latch face in the same direction, and the open end of the U-shaped structure of the latch faces away from the mating surface of the connector. This kind of structure requires the iron-clad of board end connector to possess certain height, and when the high reduction of iron-clad, the iron-clad is not enough with the trench position that the hasp stuck point matches, does not have the space and does the slot and match with the stuck point of hasp. When the iron shell of the connector is lowered, the position of the groove needs to move downwards, and the corresponding position of the locking point of the lock catch needs to move downwards; therefore, when the lock catch is pressed to unlock, the stroke of the clamping point is reduced, and the clamping point cannot be unlocked.

Disclosure of Invention

The invention aims to provide a cable connector and a connector assembly, which can effectively reduce the height of a board end connector and make unlocking easier. In order to achieve the purpose, the invention adopts the following technical scheme:

the invention discloses a cable connector, which comprises a plastic main body, an electric contact body, a cable and a connector lock catch, wherein the electric contact body is arranged in the plastic main body; the fixing part is arranged on the plastic main body, the pressing part is limited in the plastic main body, the pressing part and the fixing part are arranged in parallel or at an inclination angle theta, theta is more than 0 degree and less than 10 degrees, and the front end face of the pressing part protrudes out of the front end face of the fixing part; the pressing part is provided with a plurality of clamping points, one end of each clamping point is a guide end for guiding insertion, the other end of each clamping point is a stop surface, the direction from the guide end to the stop surface is opposite to the direction of the U-shaped opening, and the direction of the U-shaped opening faces to the butt joint surface of the connector; and the distance between the stop surface and the front end of the pressing part is B, and the distance between the front end of the pressing part and the tail end of the connecting arm is A, then B = (0.2-0.4) A.

Preferably, the end of the pressing part is bent downwards to form a guide arm, and the clamping point is integrally formed on the pressing part in a punching mode.

Preferably, the distance B =22.3 ± 0.4mm between the stop surface of the clamping point and the front end of the pressing part; when the pressing part is limited in the plastic main body, the distance H =13 +/-0.4 mm between the upper surface of the pressing part and the lower surface of the fixing part, and the inclination angle theta = 2-3 degrees.

The plastic main part including the preceding shell and the backshell of assembling each other, preceding shell on be provided with the installation department that is used for installing the connector hasp, the installation department include the bottom surface, both sides face and be located the stopper at both sides face top rear portion, the fixed part of connector hasp be located the bottom surface, the card is arranged in the both sides face in fixed part both sides, the upper surface of pressing the splenium be located the stopper below.

Furthermore, installation department bottom surface both sides be provided with first recess, the fixed part of connector hasp on be provided with first through-hole, be provided with the first flexure strip of buckling downwards in the first through-hole, first flexure strip be located first recess.

Preferably, two side faces of the mounting part are provided with side grooves, the inner wall of each side groove is provided with a first step face and a second step face, the two step faces are connected through a second inclined face, and the depth of each first step face is deeper than that of each second step face; clamping parts which are outwards extended and protrude out of the pressing part are arranged on two sides of the fixing part of the connector lock catch, a boss is outwards arranged in the middle of each clamping part, and the boss is connected with the front end of each clamping part through a first inclined plane; the clamping part of the connector lock catch is inserted from the side groove, and the boss slides into the second step surface from the first step surface and is clamped on the second step surface.

Preferably, installation department bottom surface rear portion still be provided with the screens boss, screens boss rear end is connected with the bottom surface through the third inclined plane, the middle part of pressing the splenium and the fixed part of connector hasp in the junction be provided with and keep away the dead slot, the linking arm set up in keeping away the both sides of dead slot, when the connector hasp card is fixed in the second step face, keep away the front end of dead slot and be located the front end of screens boss.

The connector lock catch further comprises a pull belt, a pull belt hole is formed in the pressing portion of the connector lock catch, a rear shell pull belt hole is formed in the rear shell, one end of the pull belt is connected with the pull belt hole, the other end of the pull belt penetrates through the rear shell pull belt hole and then extends out, and the rear shell pull belt hole is obliquely arranged and forms an inclination angle of 40-50 degrees with the surface of the rear shell.

Preferably, the front end of the side surface of the mounting part is inclined inwards to form a leading-in end.

The invention also discloses a connector component which comprises a plate end connector and the cable connector, wherein the plate end connector comprises a metal shell, a plate end plastic main body and a plate end electric contact body, the plate end plastic main body is positioned in the metal shell, the metal shell is provided with a clamping point groove, and the clamping point of the connector lock catch is clamped in the clamping point groove, so that the electric contact body of the cable connector is electrically connected with the plate end electric contact body.

The metal shell comprises a front wall, a rear wall and two side walls, wherein the two side walls are connected with the front wall and the rear wall to form a frame body, and the clamping point grooves are formed in the front wall and/or the rear wall; the two side walls are higher than the front wall and the rear wall, and are coated outside the plastic main body of the cable connector.

The upper parts of the two side walls, which are higher than the front wall and the rear wall, are bent inwards at right angles to form a front bending section and a rear bending section respectively, and the front bending section is coated outside the plastic main body of the cable connector; the plastic main body of the cable connector is provided with a containing groove, and the rear bending section is inserted into the containing groove.

Preferably, the front wall is further provided with a plurality of second through holes, second elastic pieces bent inwards are arranged in the second through holes, a second groove is formed in the front surface of the plate end plastic body, and the second elastic pieces are clamped in the second groove; the both sides wall on be provided with a plurality of constant head tanks, board end plastic main part side surface be provided with a plurality of location bosss, location boss joint in the constant head tank.

Due to the adoption of the structure, the invention has the following beneficial effects:

1. according to the connector lock catch, the U-shaped opening faces the butt joint surface of the connector, the position of the clamping point can be close to the position of the end surface, only slight pressing force is needed to be exerted, the swinging stroke is large enough, and unlocking can be achieved easily.

2. The overall height of the cable connector and the connector assembly can be made very low, which is beneficial to miniaturization design.

Drawings

Fig. 1 is a schematic structural view of a connector latch.

Fig. 2 is a schematic view of another angle of the connector latch.

Fig. 3 is a front view of the connector latch.

Fig. 4a is a schematic cross-sectional view E-E of fig. 3.

Fig. 4b is a schematic view of a partial cross-section D-D of fig. 3.

Fig. 5 is a schematic view of the connector lock mounted in the plastic body.

Fig. 6 is a schematic structural diagram of the cable connector of the present invention.

Fig. 7 is an exploded schematic view of fig. 6.

FIG. 8 is a schematic sectional view of the second embodiment.

Fig. 9 is a schematic cross-sectional view of C-C of fig. 8.

Fig. 10 is a schematic structural view of the front case.

Fig. 11 is a schematic view of another angle of the front housing.

Fig. 12 is a schematic cross-sectional view of the rear housing.

Fig. 13 is a schematic view of the construction of the connector assembly of the present invention.

Fig. 14 is an exploded schematic view of fig. 13.

FIG. 15 is an exploded view of the metal housing and the plastic body at the end of the plate.

Description of the main component symbols:

100: connector latch, 110: pressing part, 111: stuck point, 112: stop surface, 113: guide arm, 114: a drawstring hole, 120: connecting arm, 130: fixing portion, 131: first through hole, 132: first elastic sheet, 140: avoidance groove, 150: clamping part, 151: boss, 152: first inclined surface, 200: plastic body, 210: front shell, 211: a receiving groove, 220: rear shell, 221: rear shell drawstring hole, 230: mounting portion, 231: bottom surface, 232: side surface, 233: a limiting block, 234: first groove, 235: screens boss, 236: third inclined surface, 237: introduction end, 240: side groove, 241: first step surface, 242: second step surface, 243: second inclined surface, 300: conductive terminal group, 400: cable, 500: draw tape, 600: metal case, 610: front wall, 611: click slot, 612: second via hole, 613: second elastic sheet, 620: rear wall, 630: side wall, 631: front bend, 632: rear bend section, 633: a positioning groove, 700: plate end plastic body, 710: second groove, 720: positioning boss, 800: and a plate end conductive terminal group.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 6 to 9, the present invention discloses a cable connector, which includes a plastic body 200, an electrical contact, a cable 400, a pull tape 500 and a connector latch 100. The electrical contact is a PCB board or a set of conductive terminals, in this embodiment, the set of conductive terminals 300. The conductive terminal set 300 is installed in the plastic main body 200, one end of the cable 400 is electrically connected to the conductive terminal set 300, and the other end extends out of the plastic main body 200.

As shown in fig. 1 to 5, the connector lock 100 disclosed in the present invention includes: a pressing portion 110, a connecting arm 120 and a fixing portion 130. The connecting arm 120 is of a bent structure, and two ends of the connecting arm 120 are respectively connected with the pressing portion 110 and the fixing portion 130 to form a U-shaped structure. Two sets of fastening points 111 are disposed on the pressing portion 110, and in the embodiment, the fastening points 111 are integrally formed on the pressing portion 1 by press molding. One end of the fastening point 111 is a guiding end for guiding insertion, and the other end is a positioning surface 112. For the convenience of guiding, the inclined surface is arranged from the guiding end to the stop position. The direction from the leading end of the contact 111 to the stop surface 112 (the direction of arrow s in fig. 4 a) is opposite to the opening direction of the U-shape (the direction of arrow t in fig. 4 a), which is toward the mating surface of the connector.

As shown in fig. 7, the plastic body 200 includes a front case 210 and a rear case 220 assembled with each other. As shown in fig. 10, the front housing 210 is provided with a mounting portion 230 for mounting the connector lock 100. The mounting portion 230 includes a bottom surface 231, two side surfaces 232, and a stopper 233 located at the upper rear portion of the two side surfaces 232. First grooves 234 are provided on both sides of the mounting portion bottom surface 231. The rear part of the bottom surface 231 of the mounting part is further provided with a blocking boss 235, and the rear end of the blocking boss 235 is connected with the bottom surface 231 through a third inclined surface 236. Leading ends 237 are formed at front ends of the side surfaces 232 of the mounting portion to be inclined inward. The lead-in 237 functions as a lead plug.

The end of the pressing portion 110 is bent downward to form a guide arm 113, and the guide arm 113 plays a guiding role in docking. The pressing portion 110 is provided with a drawstring hole 114 for facilitating connection of a drawstring. When the pull tape is connected, the pressing portion 110 is pressed by the force applied by the pull tape, and the pressing portion 110 may be directly pressed by hand. The pressing portion 110 and the fixing portion 130 are provided with a clearance groove 140 at the middle of the connection portion, and the connecting arm 120 is provided at both sides of the clearance groove 140. The provision of the clearance groove 140 facilitates the installation of the rear housing of the connector, allowing more design space for installation.

As shown in fig. 5, the pressing portion 110 is disposed parallel to the fixing portion 130 or disposed at an inclined angle, and the inclined angle is set such that the front end of the pressing portion 110 has more pressing stroke space. The front end surface of the pressing portion 110 protrudes from the front end surface of the fixing portion 130. The pressing portion is connected with the fixing portion through the elastic arm, when the elastic arm is not installed in the plastic main body, a large angle can be arranged between the elastic arm and the fixing portion, if theta can be set to be 10-15 degrees, when the pressing portion is installed in the limiting block 233 in a limiting mode, 0 degrees < theta < 10 degrees, and further theta = 2-3 degrees can be set. Because the U-shaped opening is directed to the butt joint surface of the connector, the unlocking can be realized only by a small inclination angle after the installation, and the theta is small after the installation, thereby being beneficial to the miniaturization design of the connector.

As shown in fig. 4B, when the distance between the stop surface 112 of the locking point 111 and the front end of the pressing portion 110 is B, and the distance from the front end of the pressing portion 110 to the tail end of the connecting arm 120 is a, B = (0.2-0.4) a. The stop surface 112 is moved forward, so that the connector can be adapted to a plate end connector with low height, and miniaturization design is facilitated. In this embodiment, in order to realize the miniaturized design, and make according to the splenium in the little space through pressing down have better elasticity, the unblock of being convenient for, the distance B =22.3 ± 0.4mm of the position stopping face of design stuck point and pressing the splenium front end, when pressing the splenium spacing installation in the plastic main part, press the splenium upper surface and the distance H =13 ± 0.4mm of fixed part lower surface.

Referring to fig. 2, the fixing portion 130 is provided with a first through hole 131, and a first elastic sheet 132 bent downward is disposed in the first through hole 131.

As shown in fig. 3, the fixing portion 130 is provided with two clamping portions 150 extending outward and protruding from the pressing portion 110. The middle of the clamping part 150 is provided with a boss 151 outwards, and the boss 151 is connected with the front end of the clamping part 150 through a first inclined surface 152. The first elastic piece 132 and the clamping portion 150 are disposed to facilitate positioning and fixing on the plastic body of the cable connector.

As shown in fig. 11, the two side surfaces 232 of the mounting portion 230 are provided with side grooves 240, the inner walls of the side grooves 240 are provided with first and second step surfaces 241 and 242, and the two step surfaces are connected by a second inclined surface 243. As shown in connection with fig. 9, depth h1 of first step surface 241 is deeper than depth h2 of second step surface 242. The fixing portion 130 of the connector latch 100 is located on the bottom surface 231, so that the first elastic piece 132 is located in the first groove 234. The upper surface of the pressing portion 110 is located below the stopper 233. The clamping parts 150 at both sides of the connector lock 100 are inserted from the side grooves 240, so that the bosses 151 slide from the first stepped surfaces 241 into the second stepped surfaces 242 and are clamped on the second stepped surfaces 242. As can be seen from the figure, when the boss 151 just enters the side groove 240, since the depth h1 of the first step surface 241 is relatively large, a gap is still left between the boss 151 and the first step surface 241, and when the boss 151 enters the second inclined surface 243, the first inclined surface 152 gradually contacts with the second inclined surface 243 to continue to be inserted, so that the boss 151 slides onto the second step surface 242, and the clamping and fixing are realized. The front end of the clearance groove 140 of the connector lock 100 is located at the front end of the locking projection 235.

As shown in fig. 12, the rear case 220 is provided with a rear case pull tape hole 221, and one end of the pull tape 500 is connected to the pull tape hole 114 of the connector latch 100, and the other end thereof protrudes through the rear case pull tape hole 221. The rear shell pull tape hole 221 is obliquely arranged, and the inclination angle gamma with the surface of the rear shell 220 is 40-50 deg. The back shell pull tape hole 221 is provided with an inclination angle, so that the back shell pull tape hole 221 functions as a fulcrum and can be used for changing the direction of force. When the force applying direction of the pulling strip 500 deviates, the force can still be applied to the connector lock catch 100, so that the pressing portion 110 swings to unlock.

Example two

As shown in fig. 13 and 14, the present embodiment discloses a connector assembly including a board end connector and a cable connector according to the first embodiment.

As shown in fig. 14, the board end connector includes a metal shell 600, a board end plastic body 700 located inside the metal shell 600, and a board end electrical contact. In this embodiment, the board-end electrical contact is a board-end conductive terminal group 800.

As shown in fig. 15, the metal housing 600 includes a front wall 610, a rear wall 620, and two sidewalls 630, wherein the two sidewalls 630 connect the front wall 610 and the rear wall 620 to form a frame. The front wall 610 is provided with a contact slot 611 into which the contacts 111 of the connector latch 100 are snapped to electrically connect the electrical contacts of the cable connector with the board-end electrical contacts. The two side walls 630 are higher than the front wall 610 and the rear wall 620, and the two side walls 630 are wrapped outside the plastic main body 200 of the cable connector, so that the shielding effect of the metal housing 600 is better, and the front wall 610 and the rear wall 620 can be designed to be very low, so that after the plug-in, the height of the whole connector is very low, and the installation in a small space is realized.

The two side walls 630 of the metal shell 600 are bent inward at a right angle higher than the upper portions of the front wall 610 and the rear wall 620 to form a front bent section 631 and a rear bent section 632, respectively. The front bending section 631 is covered outside the plastic main body 200 of the cable connector. The plastic body 200 of the cable connector is provided with a receiving groove 211, and the rear bending section 632 is inserted into the receiving groove 211. Two sets of second through holes 612 are further disposed on the front wall 610 of the metal housing 600, and second elastic pieces 613 bent inward are disposed in the second through holes 612. The front surface of the board-end plastic body 700 is provided with a second groove 710, and the second elastic piece 613 is clamped in the second groove 710. A positioning groove 633 is respectively arranged on two side walls 630 of the metal shell 600, a positioning boss 720 is arranged on the side surface of the plate end plastic main body 700, and the positioning boss 720 is clamped in the positioning groove 633. Through the structure, the cable connector and the plate-end connector are better positioned and butted.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims

1. A cable connector, comprising: the cable comprises a plastic main body, an electric contact body, a cable and a connector lock catch, wherein the electric contact body is arranged in the plastic main body, one end of the cable is electrically connected with the electric contact body, and the other end of the cable extends out of the plastic main body;

the connector lock catch comprises a pressing part, a connecting arm and a fixing part, wherein the connecting arm is bent, and two ends of the connecting arm are respectively connected with the pressing part and the fixing part to form a U-shaped structure; the fixing part is arranged on the plastic main body, the pressing part is limited in the plastic main body, the pressing part and the fixing part are arranged in parallel or at an inclination angle theta, theta is more than 0 degree and less than 10 degrees, and the front end face of the pressing part protrudes out of the front end face of the fixing part;

the pressing part is provided with a plurality of clamping points, one end of each clamping point is a guide end for guiding insertion, the other end of each clamping point is a stop surface, the direction from the guide end to the stop surface is opposite to the direction of the U-shaped opening, and the direction of the U-shaped opening faces to the butt joint surface of the connector; and the distance between the stop surface and the front end of the pressing part is B, and the distance between the front end of the pressing part and the tail end of the connecting arm is A, then B = (0.2-0.4) A.

2. The cable connector of claim 1, wherein the end of the pressing portion is bent downward to form a guide arm, and the clamping point is integrally formed on the pressing portion by press-molding.

3. The cable connector according to claim 1, wherein the distance B =22.3 ± 0.4mm between the stop surface of the locking point and the front end of the pressing portion; when the pressing part is limited in the plastic main body, the distance H =13 +/-0.4 mm between the upper surface of the pressing part and the lower surface of the fixing part, and the inclination angle theta = 2-3 degrees.

4. The cable connector according to claim 1, wherein the plastic body comprises a front shell and a rear shell assembled with each other, the front shell is provided with an installation part for installing the connector lock catch, the installation part comprises a bottom surface, two side surfaces and a limiting block located at the upper rear part of the two side surfaces, a fixing part of the connector lock catch is located on the bottom surface, the two sides of the fixing part are clamped in the two side surfaces, and the upper surface of the pressing part is located below the limiting block.

5. The cable connector of claim 4, wherein first recesses are formed on both sides of a bottom surface of the mounting portion, a first through hole is formed in the fixing portion of the connector lock, a first elastic piece bent downward is disposed in the first through hole, and the first elastic piece is disposed in the first recess.

6. The cable connector of claim 4, wherein the mounting portion has side grooves formed on both sides thereof, the inner wall of the side groove has a first step surface and a second step surface connected by a second inclined surface, and the first step surface has a depth greater than that of the second step surface; clamping parts which are outwards extended and protrude out of the pressing part are arranged on two sides of the fixing part of the connector lock catch, a boss is outwards arranged in the middle of each clamping part, and the boss is connected with the front end of each clamping part through a first inclined plane; the clamping part of the connector lock catch is inserted from the side groove, and the boss slides into the second step surface from the first step surface and is clamped on the second step surface.

7. The cable connector according to claim 6, wherein a locking protrusion is further disposed at a rear portion of the bottom surface of the mounting portion, a rear end of the locking protrusion is connected to the bottom surface via a third inclined surface, a clearance groove is disposed at a middle portion of a connection portion between the pressing portion and the fixing portion of the connector lock catch, the connecting arms are disposed at two sides of the clearance groove, and when the connector lock catch is fastened to the second step surface, a front end surface of the clearance groove is located at a front end of the locking protrusion.

8. The cable connector of claim 4, further comprising a pull strip, wherein the pressing portion of the connector lock catch is provided with a pull strip hole, the rear shell is provided with a rear shell pull strip hole, one end of the pull strip is connected with the pull strip hole, the other end of the pull strip extends out after penetrating through the rear shell pull strip hole, and the rear shell pull strip hole is obliquely arranged and has an inclination angle of 40-50 ° with the surface of the rear shell.

9. The cable connector of claim 4, wherein the leading end of the side surface of the mounting portion is inwardly inclined.

10. A connector assembly comprising a board end connector and a cable connector according to any one of claims 1 to 9, wherein: the board end connector include metal casing, be located the board end plastic main part and the board end electrical contact body of metal casing, the metal casing on be provided with the stuck point groove, the stuck point card of connector hasp go into the stuck point inslot, make cable connector's electrical contact body and board end electrical contact body electricity be connected.

11. The connector assembly of claim 10, wherein: the metal shell comprises a front wall, a rear wall and two side walls, the two side walls are connected with the front wall and the rear wall to form a frame body, and the clamping point grooves are formed in the front wall and/or the rear wall; the two side walls are higher than the front wall and the rear wall, and are coated outside the plastic main body of the cable connector.

12. The connector assembly of claim 11, wherein: the upper parts of the two side walls, which are higher than the front wall and the rear wall, are bent inwards at right angles to form a front bending section and a rear bending section respectively, and the front bending section is coated outside the plastic main body of the cable connector; the plastic main body of the cable connector is provided with a containing groove, and the rear bending section is inserted into the containing groove.

13. The connector assembly of claim 11 or 12, wherein: the front wall is also provided with a plurality of second through holes, second elastic sheets bent inwards are arranged in the second through holes, a second groove is formed in the front surface of the plate end plastic main body, and the second elastic sheets are clamped in the second groove; the both sides wall on be provided with a plurality of constant head tanks, board end plastic main part side surface be provided with a plurality of location bosss, location boss joint in the constant head tank.