CN210111176U - Electrical connection device - Google Patents

Abstract

The utility model provides an electric connecting device, which comprises a first connector and a second connector. The first connector includes a first insulating body and a locking member. The first terminal is disposed on the first insulating body. The locking element is arranged on the first insulating body and is provided with an elastic arm extending from the first insulating body and two buckling blocks which are positioned at the free end part of the elastic arm and respectively extend outwards from the left side and the right side of the elastic arm. The second connector includes a second insulating body. The second insulating body defines a locking groove and is provided with two lugs positioned in the locking groove. When the first connector is in butt joint with the second connector, the free end part of the elastic arm enters the locking groove, the buckling block positioned at the free end part is pressed by the convex block to move downwards, and the elastic arm of the locking piece rebounds upwards when exceeding the convex block, so that the buckling blocks are buckled on the convex block respectively.

Description

Electrical connection device

Technical Field

The utility model relates to an electric connecting device, in particular to pluggable electric connecting device.

Background

Referring to fig. 10 and 11, a conventional electrical connector device includes a plug connector 91 and a receptacle connector 92 that can be plugged into each other, wherein the plug connector 91 is provided with a latch 911 at the top, the receptacle connector 92 is provided with a latch hole 922 at the top, and the latch 911 includes a resilient arm 911a and a protrusion 911b protruding from the end of the resilient arm 911 a. When the plug connector 91 and the receptacle connector 92 are plugged together, the protrusion 911b of the latch 911 is latched into the latch hole 922, so that the plug connector 91 and the receptacle connector 92 can be latched together when being plugged together. However, such a structure may have a problem that, since the bump 911b protrudes upward from the elastic arm 911a and is stopped by the inner side surface of the card hole 922 in the direction in which the plug connector 91 is withdrawn, when the plug connector 91 receives a pulling force along the elastic arm 911a as shown in the direction of arrow a1 in fig. 11 in the state in which the bump 911b is inserted into the card hole 922, the pulling force of arrow a1 received by the plug connector 91 and the reaction force of the bump 911b received from the inner side surface of the card hole 922 in the direction of arrow a2 in fig. 11 are not aligned, the elastic arm 911a tends to displace downward due to the torque generation, and thus the bump 911b may accidentally fall out of the card hole 922, and in such a case, the bump 911b is also easily worn or deformed.

US patent No. US6712636 discloses a connector locking structure including a male connector and a female connector. The male connector comprises a pair of elastic arms (the specification element numbers 35 and 36), each elastic arm is provided with an engaging part (the specification element number 38), the female connector is provided with a pair of stopping parts (the specification element number 43) formed inside, and when the male connector is plugged with the female connector, the engaging parts of the elastic arms are stopped at the stopping parts to achieve the effect of locking. However, as can be seen from fig. 3b of the embodiment, the pair of elastic arms is elongated, and during the mating process, the two elastic arms are forced to bend and deform toward each other, and the structural strength of such elastic arms may be slightly insufficient in the development of miniaturization of modern connectors.

Referring to fig. 12 and 13, U.S. patent No. US6884106 discloses an electrical connector set including a plug 93 and a socket 94 matching with the plug 93, a latch beam 932 is disposed on a side of the plug 93 and two locking blocks 931 protruding from two opposite sides of the latch beam 932, and the socket 94 has two protrusions 941 near the opening. When the plug 93 is plugged into the socket 94, the two locking blocks 931 of the plug 93 are laterally fastened to the two protrusions 941 of the plug 93, so as to achieve the locking effect. However, since the latch beam 932 is further connected to the lock block 931 by the side plate 933, the depth of engagement between the protrusion 941 of the receptacle 94 and the lock block 931 of the plug 93 is reduced, and the same torque condition as that in fig. 10 and 11 is generated, so that the lock block 931 may accidentally disengage from the protrusion 941, and the protrusion 941 and the lock block 931 may wear or deform. Further, since the lock 931 is not provided at the free end of the latch beam 932, it is easy to cause the elasticity of the latch beam 932 to be deteriorated when the projection 941 of the receptacle 94 is engaged with the lock 931 of the header 93, and if the elasticity of the latch beam 932 is to be increased based on such a structure, it is necessary to increase the length of the latch beam 932 as a whole, which is disadvantageous to the development of miniaturization of the connector.

SUMMERY OF THE UTILITY MODEL

Therefore, an object of the present invention is to provide an electrical connection device with a stable connection structure.

Thus, in some embodiments, the electrical connection device of the present invention includes a first connector and a second connector. The first connector comprises a first insulating body; a plurality of first terminals disposed on the first insulating body; the locking piece is arranged on the first insulating body and provided with an elastic arm extending forwards from the first insulating body and two buckling blocks which are positioned at the free end part of the elastic arm and respectively extend outwards from the left side and the right side of the elastic arm. The second connector comprises a second insulating body, a lock catch groove for the lock catch piece to extend into is defined, the lock catch groove is provided with an opening, the second insulating body is provided with two convex blocks positioned in the lock catch groove, and a plurality of second terminals are arranged on the second insulating body and are respectively electrically connected with the first terminals. In the process that the first connector is butted with the second connector along the front-back direction, the free end part of the elastic arm of the locking piece enters the locking groove through the opening, the two buckling blocks positioned at the free end part are pressed by the two convex blocks to elastically displace downwards, and the elastic arm of the locking piece rebounds upwards when the two convex blocks are exceeded, so that the two buckling blocks are buckled on the two convex blocks respectively.

In some embodiments, the thickness of each of the snap blocks in the up-down direction is equivalent to the thickness of the elastic arm in the up-down direction.

In some embodiments, a bottom surface of each snap-fit block is flush with a bottom surface of the corresponding bump in the up-down direction.

In some embodiments, the bottom surface of each snap-fit block is not lower than the bottom surface of the corresponding bump in the up-down direction.

In some embodiments, each of the two locking blocks has a first stopping surface, each of the two protrusions has a second stopping surface, and when the two locking blocks are respectively locked to the two protrusions, the first stopping surfaces of the two locking blocks are respectively stopped by the two second stopping surfaces.

In some embodiments, the first stopping surface is located at the rear side of the fastening block, the first stopping surface is beveled, the beveled direction of the first stopping surface extends forward and downward, and the second stopping surface is beveled, and the beveled direction is complementary to the beveled direction of the first stopping surface.

In some embodiments, the first insulating body and the locking member are integrally formed, and the second insulating body and the protrusion are integrally formed.

In some embodiments, the first insulating body has a base portion and a protection wall portion disposed on the top surface of the base portion, and the resilient arm of the locking member is connected to the top surface of the base portion and surrounded by the protection wall portion.

In some embodiments, the first insulating body further has a button portion disposed on the retaining wall portion and configured to press the elastic arm of the locking member so as to separate the two latching blocks from the two protrusions respectively.

In some embodiments, the first insulating body further has a mating portion, the second insulating body has a mating portion mating with the mating portion, and a locking portion disposed on a top surface of the mating portion, the locking portion defining the locking groove.

In some embodiments, the locking portion has two side wall sections disposed at the inserting portion at intervals in the left-right direction, and a top wall section connected to the two side wall sections, the top wall section and the top surface of the inserting portion together define the locking groove, and the two protrusions are located above the opening.

In some embodiments, each of the locking pieces has a joint surface located on the top side, the joint surfaces of the two locking pieces are adjacent to or abut against the bottom surface of the top wall section of the locking part, and the bottom surface of each of the locking pieces is flush with the bottom surface of the corresponding protrusion in the up-down direction.

In some embodiments, each of the locking pieces has a joint surface located on the top side, the joint surfaces of the two locking pieces are adjacent to or abut against the bottom surface of the top wall section of the locking part, and the bottom surface of each locking piece is not lower than the bottom surface of the corresponding bump in the up-down direction.

The utility model discloses have following efficiency at least: through the arrangement of the locking fastener of the first connector and the locking part and the lug of the second connector, the pulling force applied to the elastic arm and the reaction force applied to the buckling block are positioned on the same straight line, so that the elastic arm is prevented from generating torque and being easily displaced to accidentally release the buckling relation between the two buckling blocks and the two lugs, and the abrasion or deformation of the two buckling blocks and the lug can be reduced; and the structural strength of the fastener is enhanced; and two buckle pieces are arranged at the free end part of the elastic arm, so that the elasticity is better, or the length of the elastic arm is shorter under the same elasticity, and the development of connector miniaturization is facilitated.

Drawings

Other features and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments with reference to the accompanying drawings, in which:

fig. 1 is a perspective view of an embodiment of the electrical connection device of the present invention;

FIG. 2 is another angular view of FIG. 1;

FIG. 3 is an exploded perspective view of the embodiment;

FIG. 4 is another angular view of FIG. 3;

fig. 5 is a perspective view illustrating a locking groove and two protrusions of a second insulating body according to the embodiment;

FIG. 6 is a front view of the embodiment;

FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6;

FIG. 8 is a side view of the embodiment;

FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. 8;

fig. 10 is a cross-sectional view of a prior art electrical connector device;

FIG. 11 is an enlarged view of a portion of FIG. 10;

fig. 12 is a cross-sectional view of a plug and a receptacle of US 6884106; and

figure 13 is a cross-sectional view of a plug and socket connection according to US 6884106.

The reference numerals are explained below:

100 electric connection device

1 first connector

2 first insulating body

21 base part

22 butt joint part

221 column

23 wall protection part

231 side plate segment

232 bridge plate section

24 button part

25 terminal groove

3 first terminal

4 locking fastener

41 spring arm

411 fixed part

412 extension

413 free end portion

413a guide surface

42 buckling block

421 first stop surface

422 interface

5 second connector

6 second insulating body

61 plug part

611 inserting groove

611a terminal connecting groove part

611b butt joint groove part

62 locking part

621 side wall segment

622 top wall section

623 locking groove

623a opening

7 second terminal

8 bump

81 second stop surface

82 guide surface

D1 front-back direction

D2 left and right direction

D3 vertical direction

F1 acting force

F2 acting force

Detailed Description

Referring to fig. 1 and 2, an embodiment of the electrical connection device 100 of the present invention includes a first connector 1 and a second connector 5. The first connector 1 may be a line end connector and the second connector 5 may be a line end or plate end connector. In the present embodiment, the first connector 1 is illustrated as a plug, and the second connector 5 is illustrated as a socket, but not limited thereto.

Referring to fig. 3 to 5, the first connector 1 includes a first insulating body 2, a plurality of first terminals 3 and a locking member 4. The first insulating body 2 has a base 21, an abutting portion 22, a wall protecting portion 23 and a button portion 24. In the present embodiment, the base portion 21 has a rectangular parallelepiped structure extending along a front-rear direction D1 (i.e. the plugging direction of the first connector 1 and the second connector). The docking portion 22 includes a plurality of columns 221, and the plurality of columns 221 are arranged in an array at the front side of the base portion 21 and extend forward from the front side of the base portion 21. The base 21 and each pillar 221 define a terminal slot 25 penetrating the first insulating body 2. The plurality of first terminals 3 are fixedly disposed in the plurality of terminal grooves 25. The retaining wall 23 is disposed on the top surface of the base 21, and has a pair of side plate sections 231 spaced apart in a left-right direction D2 and extending in a front-rear direction D1, and a bridge plate section 232 connected to rear ends of the two side plate sections 231. The button portion 24 is provided on the bridge section 232 of the retaining wall portion 23 above the base portion 21.

In the present embodiment, the button portion 24 and the locking member 4 are integrally formed with the first insulating body 2, and the locking member 4 is disposed on the top surface of the base 21 and located between the top surface of the base 21 and the button portion 24. The locking member 4 has a resilient arm 41 connected to the base 21 and disposed in a front-back direction D1, and two locking blocks 42 located on the resilient arm 41 and respectively extending outward from the left and right sides of the resilient arm 41. Referring to fig. 7 and 9, in particular, the elastic arm 41 is substantially L-shaped in side view and has a fixing portion 411 connected to the base 21, an extending portion 412 extending forward from the fixing portion 411, and a free end portion 413 connected to the extending portion 412. The fixing portion 411 and the extending portion 412 are located between the two side plate sections 231 of the retaining wall 23 and surrounded by the retaining wall 23, and the height of the two side plate sections 231 can prevent other components or wires from pressing the elastic arm 41 by mistake. The extension 412 corresponds to the lower portion of the button portion 24, so that the button portion 24 can be pressed against the extension 412 of the locking member 4 to move downward. The two locking blocks 42 extend outward from the left and right sides of the free end 413 along the left-right direction D2, so that the connected extending portion 412 and the two locking blocks 42 are T-shaped in a top view, and the thickness of each locking block 42 in a vertical direction D3 is equal to the thickness of the elastic arm 41 in the vertical direction D3. Each locking block 42 has a first stop surface 421 at the rear side and a joint surface 422 at the top side and connected to the first stop surface 421. The first stop surface 421 is inclined, and the inclined direction of the first stop surface 421 gradually extends from the joint surface 422 to the front. And a guide surface 413a is formed on the front periphery of the free end 413 and the locking block 42.

Referring to fig. 3 to 5, the second connector 5 includes a second insulating body 6, a plurality of second terminals 7, and two bumps 8, and the second connector 5 has a plugging side 50 facing the first connector 1. The second insulating body 6 has an inserting portion 61 engaged with the mating portion 22 of the first connector 1, and a locking portion 62 disposed on a top surface of the inserting portion 61, wherein the inserting side 50 is a side of the inserting portion 61 facing the first connector 1. The plugging portion 61 is formed by being recessed in the second insulating body 6, and defines a plurality of plugging grooves 611 penetrating through the plugging portion 61 along the front-back direction D1. Each of the insertion grooves 611 has an engagement groove portion 611b having a larger diameter and adjacent to the insertion side 50 and a terminal engagement groove portion 611a communicating with the engagement groove portion 611b and having a smaller diameter, and the terminal engagement groove portion 611a is located farther from the insertion side 50 than the engagement groove portion 611 b. The second terminals 7 are respectively fixed to the terminal receiving groove portions 611 a. The plurality of abutting groove portions 611b are used for respectively inserting the plurality of columns 221 of the abutting portion 22, so that the plurality of first terminals 3 can be respectively electrically connected to the plurality of second terminals 7.

The locking portion 62 is adjacent to the inserting side 50 and defines a locking groove 623 extending along the front-back direction D1 and used for the locking member 4 to extend into. In detail, the locking portion 62 has a substantially inverted U-shaped configuration as viewed from the direction of the insertion side 50 and has two side wall sections 621 disposed at intervals in the left-right direction D2 on the insertion portion 61 and a top wall section 622 connected to the two side wall sections 621. The side wall segment 621, the top wall segment 622 and the top surface of the inserting portion 61 together define the locking groove 623, the locking groove 623 forms an opening 623a on the inserting side 50, and the two protrusions 8 are disposed in the locking groove 623 and above the opening 623 a. In one embodiment, two protrusions 8 are connected to two side wall sections 621, respectively. In one embodiment, two tabs 8 are connected to the top wall section 622. In this embodiment, two protrusions 8 are respectively disposed on the opposite inner wall surfaces of the two side wall sections 621, and the two protrusions 8 are connected to the top wall section 622 and adjacent to the opening 623 a. In this embodiment, the two bumps 8, the locking portion 62 and the second insulating body 6 are integrally formed. Each projection 8 has a second stop face 81 facing away from the plug side 50 and a guide face 82 on the plug side 50. The second stopping surface 81 is beveled, and the beveled direction of the second stopping surface 81 is inclined downward and gradually toward the direction away from the plugging side 50, so as to match the shape of the first stopping surface 421 of each fastening block 42 in a complementary manner in the inclined direction, and in the miniaturized electrical connection device 100, the first connector 1 can be stably connected to the second connector 5 without being easily released.

Referring to fig. 6 to 9, during the process of the first connector 1 mating the second connector 5 forward along the front-back direction D1, the free end 413 of the elastic arm 41 of the latching member 4 enters the latching groove 623 through the opening 623a below the protrusion 8, and during the entering process, the two latching lugs 42 at the free end 413 contact the guide surfaces 82 of the two protrusions 8 with the guide surfaces 413a thereof, and are pressed by the guide surfaces 82, so that the elastic arm 41 is pressed downward and elastically displaced. When the two fastening blocks 42 continuously extend into the locking slot 623 until passing through the two protrusions 8, the elastic arm 41 rebounds upwards due to the fact that the two fastening blocks 42 are no longer pressed by the two protrusions 8, and meanwhile, the first stopping surfaces 421 of the two fastening blocks 42 face the second stopping surfaces 81 of the two protrusions 8, so that the two fastening blocks 42 are fastened to the two protrusions 8 respectively, at this time, the joint surfaces 422 of the two fastening blocks 42 are adjacent or abut against the bottom surface of the top wall section of the locking part 62, and the two fastening blocks 42 are stopped by the second stopping surfaces 81 in the direction that the first connector 1 exits from the second connector 5, thereby completing the butt joint of the first connector 1 and the second connector 5.

It should be noted that, when the first connector 1 is pulled in a direction to withdraw from the second connector 5 in a state of being inserted into the second connector 5, the elastic arm 41 receives a pulling force shown as F1 in fig. 7 for the locking device 4, and a reaction force from the second stopping surface 81, i.e. a force shown as F2 in fig. 7 for the bump 8, in the present embodiment, by designing that a thickness of each of the locking pieces 42 in the up-down direction D3 is substantially equal to a thickness of each of the bumps 8 in the up-down direction D3, when two locking pieces 42 are respectively locked with two bumps 8, a bottom surface of each of the locking pieces 42 is flush with or not lower than a bottom surface of the corresponding bump 8 in the up-down direction D3, and the locking pieces 42 extend outward from both left and right sides of the elastic arm 41, so that a pulling force F1 received by the elastic arm 41 and a reaction force F2 received by the locking pieces 42 are located at the same height, or the forces of F1 and F2 are on the same line, compared to the structure mentioned in fig. 10 and fig. 11 of the prior art, it is able to avoid that the elastic arm 41 is easily displaced due to the torque generated by the relationship that the forces in two directions are not on the same line, and the buckling relationship between the two locking blocks 42 and the two protrusions 8 is accidentally released, and also to reduce the abrasion or deformation of the locking blocks 42 and the protrusions 8. Furthermore, the design of the inclined plane of the first stop surface 421 and the second stop surface 81 can also exert the effect of preventing the locking block 42 from easily separating from the protrusion 8.

It should be understood that "flush" in the above-mentioned "the bottom surface of each of the snapping blocks 42 is flush with the bottom surface of the corresponding bump 8 in the up-down direction D3" is not absolutely flush, and due to manufacturing or assembly errors, the bottom surface of the snapping block 42 may be slightly lower than the bottom surface of the corresponding bump 8, which are all within the protection scope of the present invention.

In the present embodiment, the two catching blocks 42 are provided with guide surfaces 413a (see fig. 3) that engage with the guide surfaces 82 of the two projections 8, respectively. In an embodiment, the two projections 8 may not be provided with the guide surfaces 82, but are guided by the guide surfaces 423 of the two snapping blocks 42.

When the first connector 1 is to be separated from the second connector 5, the button portion 24 of the first connector 1 is pressed to press the button portion 24 against the elastic arm 41 of the locking member 4, so as to couple the two locking blocks 42 to move downward and separate from the two protrusions 8, and then the first connector 1 is moved backward along the front-back direction D1, so as to move the two locking blocks 42 out of the locking groove 623, thereby completing the separation of the first connector 1 from the second connector 5.

In summary, the latch 4 of the first connector 1 and the latch 62 and the protrusion 8 of the second connector 5 are arranged such that the pulling force F1 applied to the resilient arm 41 and the reaction force F2 applied to the latch 42 are all located on the same straight line, so as to avoid the situation that the resilient arm 41 is easily displaced to accidentally disengage the two latches 42 and the two protrusions 8, and to reduce the wear or deformation of the latches 42 and the protrusions 8, compared to the structure mentioned in fig. 10 and 11 of the prior art, the structure strength of the latch 4 is enhanced, compared to the structure of US6712636 in fig. 12 and 13, except that the torque is not easily generated, the wear of the latches 42 and the protrusions 8 is reduced, and the latches 42 are stably engaged, and the free end of the resilient arm 41 is provided with the latch 42, which is better in elasticity, or the length of the resilient arm 41 is shorter under the same elasticity, the development of miniaturization of the connector is facilitated, so that the aim of cost utility model can be achieved.

However, the above embodiments are only examples of the present invention, and the scope of the present invention should not be limited thereto, and all the simple equivalent changes and modifications made according to the claims and the patent specification of the present invention are still included in the scope of the present invention.

Claims (13)

1. An electrical connection device, comprising:

a first connector including

A first insulating body having a first surface and a second surface,

a plurality of first terminals disposed on the first insulating body, and

the locking piece is arranged on the first insulating body and is provided with an elastic arm extending forwards from the first insulating body and two buckling blocks which are positioned at the free end part of the elastic arm and respectively extend outwards from the left side and the right side of the elastic arm; and

a second connector comprising

A second insulating body defining a latch groove for the latch member to extend into, the latch groove having an opening, the second insulating body having two protrusions located in the latch groove, and

a plurality of second terminals disposed on the second insulating body and electrically connected to the first terminals, respectively;

when the first connector is butted with the second connector along the front-back direction, the free end part of the elastic arm of the locking piece enters the locking groove through the opening, the two buckling blocks positioned at the free end part are pressed by the two convex blocks to move downwards along the up-down direction, and when the two convex blocks are exceeded, the elastic arm of the locking piece rebounds upwards along the up-down direction, so that the two buckling blocks are buckled on the two convex blocks respectively.

2. The electrical connector of claim 1, wherein the thickness of each latching portion in the up-down direction is equal to the thickness of the elastic arm in the up-down direction.

3. The electrical connection device as claimed in claim 1, wherein the bottom surface of each snap-fit block is flush with the bottom surface of the corresponding bump in the up-down direction.

4. The electrical connection device as claimed in claim 1, wherein the bottom surface of each snap-fit block is not lower than the bottom surface of the corresponding bump in the up-down direction.

5. The electrical connecting device as claimed in claim 1, wherein each of the locking pieces has a first stopping surface, each of the protrusions has a second stopping surface, and when two of the locking pieces are respectively locked to two of the protrusions, the first stopping surfaces of the two locking pieces are respectively stopped by the two second stopping surfaces.

6. The electrical connecting device as claimed in claim 5, wherein the first stopping surface is located at a rear side of the locking block, the first stopping surface is beveled and extends forward and downward, and the second stopping surface is beveled and has a beveled direction complementary to the beveled direction of the first stopping surface.

7. The electrical connector as claimed in claim 1, wherein the first insulative housing and the locking member are integrally formed, and the second insulative housing and the protrusion are integrally formed.

8. The electrical connection device as claimed in claim 1, wherein the first insulating body has a base portion and a wall portion disposed on the top surface of the base portion, and the resilient arm of the locking member is connected to the top surface of the base portion and surrounded by the wall portion.

9. The electrical connector as claimed in claim 8, wherein the first insulative housing further has a button portion disposed on the retaining wall portion for pressing the resilient arm against the locking member to separate the two latching portions from the two protrusions, respectively.

10. The electrical connector as claimed in claim 1, wherein the first housing further has a mating portion, the second housing has a mating portion and a locking portion disposed on a top surface of the mating portion, the locking portion defines the locking slot.

11. The electrical connector as claimed in claim 10, wherein the locking portion has two side wall sections spaced apart from each other in the left-right direction and a top wall section connected to the two side wall sections, the top wall section and the top surface of the insertion portion together define the locking groove, and the two protrusions are located above the opening.

12. The electrical connector of claim 11, wherein each latching portion has a top side engaging surface, two engaging surfaces of the latching portions are adjacent to or abut against a bottom surface of the top wall section of the locking portion, and a bottom surface of each latching portion is flush with a bottom surface of the corresponding protrusion in the up-down direction.

13. The electrical connector of claim 11, wherein each latching portion has a top side engaging surface, the engaging surfaces of two latching portions are adjacent to or abut against the bottom surface of the top wall section of the locking portion, and the bottom surface of each latching portion is not lower than the bottom surface of the corresponding protrusion in the up-down direction.

Images