CN217427231U

CN217427231U - Connecting terminal

Info

Publication number: CN217427231U
Application number: CN202220787719.4U
Authority: CN
Inventors: 丁高松; 巴宇辉; 蓝贵凡; 兰春华
Original assignee: Ningbo Degson Electrical Co ltd
Current assignee: Ningbo Degson Electrical Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-09-13
Anticipated expiration: 2032-04-06

Abstract

The utility model relates to a wiring terminal, which comprises a plug structure, a socket structure and a button structure, wherein the plug structure is provided with a plug shell and an elastic clamping element with electric conductivity, the elastic clamping element is provided with a clamping port, the plug shell is provided with a wire inserting hole, the socket structure is provided with a socket shell and a contact pin, the first end of the contact pin is clamped by the clamping port of the elastic clamping element in an interference manner, and the second end of the contact pin is positioned outside the socket shell; the button structure is responsible for realizing and releasing the fastening state of the lock between the plug shell and the socket shell. Utilize the hasp fastening of button structure, firm effect after reinforcing plug and the socket assembly, elastic clamping element's centre gripping mouth is with interference mode centre gripping contact pin, has ensured elastic clamping element and contact pin electric connection's stability, and the roof pressure of the roof pressure portion of screw to the elastic clamping element head end reaches the stable electric connection effect between wire and the elastic clamping element, has strengthened binding post and has connected the effect at the stable electricity of wiring operation time.

Description

Connecting terminal

Technical Field

The utility model relates to an electrical equipment part field especially relates to a binding post.

Background

Currently, a terminal (or a connector) has been widely used for various electric and automation devices. Through the wiring terminal, the electric connection between the two devices can be realized.

The existing wiring terminal comprises a plug structure and a socket structure, wherein the plug structure mainly comprises a plug shell and an elastic clamping piece with electric conductivity, a wire inserting hole is formed in the plug shell, the elastic clamping piece is positioned in the plug shell, the socket structure mainly comprises a socket shell, a contact pin and a welding leg, the contact pin is positioned in the socket shell, the contact pin is clamped and fixed by one end of the elastic clamping clamp, and the welding leg is positioned on the outer side of the socket shell; wherein the plug structure and the socket structure are assembled together by clamping fixation between the resilient clamping member and the pin. When wiring is needed, the welding feet of the wiring terminal are welded on one device, and after a wire electrically connected with the other device is inserted through the wire insertion hole of the wiring terminal and clamped by the elastic clamping piece, the two devices can be electrically connected.

However, the existing terminal also has the following defects: because only rely on the centre gripping between elastic clamping piece and the contact pin between plug structure and the socket structure and fix, this kind of stationary force is not strong, and the assembly effect between plug structure and the socket structure is relatively poor, and plug structure and socket structure that assemble originally together lead to contact pin and elastic clamping piece to break away from because of the pulling very easily, cause plug structure and socket structure alternate segregation, interrupt original electric connection, cause this binding post's electric connection effect stability relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a binding post that has stronger assembly effect and more stable electric connectivity effect is provided to above-mentioned prior art.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a terminal, comprising:

the plug structure is provided with a plug shell and an elastic clamping piece with conductive performance, the plug shell is provided with a wire insertion hole, the elastic clamping piece is positioned on the inner side of the plug shell, and the elastic clamping piece is provided with a clamping opening;

the socket structure is provided with a socket shell and a contact pin, the contact pin is positioned on the inner side of the socket shell, a first end of the contact pin is clamped and fixed by a clamping end of the elastic clamping piece, and a second end of the contact pin is positioned on the outer side of the socket shell;

the button structure is used for fastening the plug shell and the socket shell in a locking manner or releasing the locking and fastening state of the plug shell and the socket shell; wherein, the first end of contact pin is held to the centre gripping mouth of elastic clamping spare through interference fit's mode.

In the terminal, the plug structure further includes:

a screw mounting hole formed in the plug housing substantially perpendicular to the wire insertion hole and communicating with the wire insertion hole, a stopper portion formed inside the screw mounting hole, and a first through hole formed in the stopper portion;

the screw is detachably arranged in the screw mounting hole and is provided with a base and a screw rod, the base is positioned on the outer side of the first through hole, the front end of the screw rod is provided with a jacking part, and the jacking part is positioned on the inner side of the first through hole;

the conductive block can be arranged in the screw mounting hole in a reciprocating manner along the axial direction of the screw mounting hole, a through hole, a threaded hole and a second through hole which are mutually communicated are formed in the conductive block, the through hole and the lead wire inserting hole are mutually correspondingly arranged, and the threaded hole is in threaded fit with the front end of the screw rod;

the head end of the elastic clamping piece penetrates through the second through hole and is located on the inner side of the threaded hole, the tail end of the elastic clamping piece is arranged on the outer side of the second through hole, the front end of the screw rod is in threaded fit with the threaded hole, and the jacking portion of the front end extends into the inner side of the threaded hole and can jack the head end of the elastic clamping piece.

In the terminal, a limiting part matched with the head end of the elastic clamping piece is formed on the inner side of the screw mounting hole.

In a further improvement, in the terminal, the resilient clamp includes:

a connecting portion;

the first force arm is connected with the connecting part and is positioned on one side of the connecting part;

the second force arm is connected with the connecting part and is positioned on the other side of the connecting part;

the connecting part is the head end of the elastic clamping piece, the first force arm and the second force arm form the tail end of the elastic clamping piece, and the clamping opening is formed between the movable end of the first force arm and the movable end of the second force arm.

Preferably, in the terminal, the clamping opening and the first end of the contact pin are in interference fit.

In the terminal, the button structure may include:

the button body is rotatably arranged on the inner side of the plug shell;

a button part formed on the button body, the button part being located outside the plug housing and rotating with the button body;

the locking part is formed on the button body, is positioned at the outer side of the plug shell and is matched with the locking and buckling socket shell.

Further, in the wiring terminal, the locking part is a buckle, and a clamping groove matched with the buckle is formed in the socket shell.

In the terminal, the plug housing includes:

a first housing formed with the wire insertion hole;

a second housing formed with the screw mounting hole; wherein the second housing is assembled with the first housing.

Further, in the terminal, an accommodating cavity is formed in the second housing, and the end of the elastic clamping member is disposed in the accommodating cavity.

Optionally, in the terminal, the screw is a conductive screw or an insulating screw.

Compared with the prior art, the utility model has the advantages of:

firstly, the arranged button structure is used for completing the locking and fastening between the plug structure and the socket structure, so that the firm effect after the assembly of the plug structure and the socket structure is enhanced, and the plug structure and the socket structure are prevented from being separated due to pulling;

secondly, a clamping opening for clamping the contact pin is formed on the elastic clamping piece, and the clamping opening and the contact pin are in interference fit, so that the stable electrical connection between the elastic clamping piece and the contact pin is ensured; and then the top pressure of the top pressure part of the screw to the head end of the elastic clamping part (namely the connecting part of the elastic connecting part) achieves the effect of stable electric connection between the wire and the elastic clamping part, thus realizing the stable electric connection between the wiring terminal and the wire, enhancing the stability of the electric connection effect of the wiring terminal during the wiring operation, and avoiding the occurrence of the electric connection interruption fault condition caused by poor electric connection stability.

Drawings

Fig. 1 is a schematic structural view of a connection terminal in an embodiment of the present invention;

fig. 2 is an exploded view of the terminal shown in fig. 1;

FIG. 3 is a cross-sectional view of the plug housing;

FIG. 4 is a cross-sectional view of a conductive block;

FIG. 5 is a schematic view of the construction of the spring clamp;

fig. 6 is a schematic view showing a state where a wire is not inserted into the terminal;

FIG. 7 is an enlarged view of portion A of FIG. 6;

FIG. 8 is a schematic view of the wire inserted a distance into the terminal;

FIG. 9 is an enlarged view of the portion B of FIG. 8;

fig. 10 is a schematic view of the conductor locked (i.e., completed) by the terminal;

fig. 11 is an enlarged schematic view of a portion C in fig. 10.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

The present embodiment provides a connection terminal. Referring to fig. 1 to 5, the connection terminal of the embodiment includes a plug structure 1, a socket structure 2 and a button structure 3; wherein:

referring to fig. 2, the plug structure 1 has a plug housing 11, a resilient clamping member 12 having a conductive property, a screw 14, and a conductive block 15, the plug housing 11 includes a first housing 111 and a second housing 112 which are assembled together by a snap-fit manner, the first housing 111 is formed with a wire insertion hole 110 into which the external wire 4 is inserted; a screw mounting hole 13 formed substantially perpendicularly to the wire insertion hole 110 is formed in the second housing 112, and the screw mounting hole 13 and the wire insertion hole 110 communicate with each other; referring to fig. 3, a stopper portion 131 and a limiting portion 132 matching with the head end of the elastic clamping member 12 are formed inside the screw mounting hole 13, and a first through hole 1310 is formed on the stopper portion 131; an extension 112a with a receiving cavity 1120 is formed on the second housing 112, and a transverse rib 1121 is formed in the receiving cavity 1120; the limiting portion 132 abuts against the elastic clamping member 12, and in addition, the transverse rib 1121 is engaged, so as to achieve the effect of effectively fixing the elastic clamping member 12 in the second housing 112;

the elastic clamping member 12 is located inside the plug housing 11, specifically inside the second housing 112, as shown in fig. 5, the elastic clamping member 12 includes a connecting portion 120, a first force arm 121 and a second force arm 122, the connecting portion 120 serves as a head end of the elastic clamping member 12, the first force arm 121 and the second force arm 122 form a tail end of the elastic clamping member 12, a clamping opening 12a for clamping the pin is formed between a movable end of the first force arm 121 and a movable end of the second force arm 122, the clamping opening 12a and a clamped end of the pin are in interference fit, and a structure of the clamping opening 12a is shown in fig. 5.

The screw 14 is detachably installed in the screw installation hole 13, the screw 14 is made of a conductive material, the screw 14 has a base 141 and a screw rod 142, the whole screw is located in the screw installation hole 13, the base 141 is located outside the first through hole 1310, the front end of the screw rod 142 has a pressing part 142a, and the pressing part 142a is located inside the first through hole 1310;

the conductive block 15 is disposed in the screw mounting hole 13 so as to be movable back and forth in the axial direction of the screw mounting hole 13, the conductive block 15 is formed with a through hole 151, a screw hole 152, and a second through hole 153 which are penetrated together, the through hole 151 and the lead wire insertion hole 110 are disposed to correspond to each other, and the screw hole 152 is screw-engaged with the front end of the screw 142. The connecting portion 120 of the elastic clamping piece 12 passes through the second through hole 153 and is located inside the threaded hole 152, the ends of the elastic clamping piece 12 (i.e., the first force arm 121 and the second force arm 122) are disposed outside the second through hole 153, and specifically, the ends of the elastic clamping piece 12 are disposed in the accommodating cavity 1120 of the extending portion 112 a; the front end of the screw 142 is screwed into the threaded hole 152, and the pressing portion 142a of the front end extends into the threaded hole 152 and presses against the front end of the elastic clamping member 12 (i.e., the connecting portion 120).

Referring to fig. 2, the button structure 3 in this embodiment includes a button body 31, a button portion 32 and a locking portion 33 which are integrally formed, the button body 31 is rotatably disposed inside the plug housing 11 through a rotating shaft structure, the button portion 32 is formed on the button body 31, the button portion 32 is located outside the plug housing 11 and rotates with the button body 31; the locking part 33 is formed on the button body 31 and is positioned outside the plug housing 11, and the locking part 33 adopts a buckling structure;

the socket structure 2 has a socket housing 21, a pin 22 and a solder 23, the solder 23 is located at the bottom of the socket housing 21, a slot 210 for the matching locking portion 33 to be inserted is formed on the socket housing 21, the pin 22 is located at the inner side of the socket housing 21, the first end of the pin 22 is clamped and fixed by the clamping opening 12a of the elastic clamping member 12, and the second end of the pin 22 is located at the outer side of the socket housing 21. Wherein, the clamping opening 12a and the first end of the insertion pin 22 are in interference fit. By rotating the button structure 3, the locking portions 33 of the button structure 3 are clamped into the locking slots 210, so that the plug housing 11 and the socket housing 21 are locked and fastened together, and the assembly and fixation between the plug structure 1 and the socket structure 2 are completed. Of course, the locking and fastening state of the plug housing 11 and the socket housing 21 can be released by reversely rotating the button structure 3, so as to separate the plug structure 1 from the socket structure 2.

In order to conveniently separate the plug structure 1 from the receptacle structure 2, referring to fig. 2, the button body 31 of this embodiment is further formed with a force applying portion 34 for applying a pushing force to the receptacle housing 21, that is, in the process of rotating the button body 31 due to the force applied to the button portion 32, the force applying portion 34 will rotate and push the receptacle housing 21 outwards, so as to push the receptacle housing 21 outwards, thereby completing the separation of the plug structure 1 and the receptacle structure 2.

The following description will be made of the wiring operation of the wiring terminal in this embodiment with reference to fig. 6 to 11:

when the wiring terminal is not used for wiring operation, referring to fig. 6 and 7, the pressing portion 142a of the front end of the screw 14 is located in the threaded hole 152 of the conductive block 15, the front end of the screw 142 is in threaded connection with the threaded hole 152, the pressing portion 142a is located above the front end (i.e., the connection portion 120) of the elastic clamping member 12, and the pressing portion 142a of the screw 14 does not press against the connection portion 120 of the elastic clamping member 12; the button structure 3 firmly assembles the plug structure 1 and the socket structure 2 together through the locking portions 33 thereof;

when it is necessary to use the wire connecting terminal for the wire connecting operation, referring to fig. 8 and 9, after the head end of the wire 4 is inserted into the plug housing 11 from the outside through the wire insertion hole 110 and extends into the second through hole 153, the screw 14 is rotated by a tool from the screw mounting hole 13, the screw 142 rotates along with the rotation of the tool, the conductive block 15 can move back and forth along the axial direction of the screw mounting hole 13 because the front end of the screw 142 is in threaded connection with the threaded hole 152 of the conductive block 15, so that the conductive block 15 can be continuously screwed up toward the base 141 of the screw 14 along with the rotation of the screw 142, and the pressing portion 142a of the screw 14 can move down relative to the conductive block 15; as shown in fig. 10 and 11, with the relative displacement between the pressing portion 142a of the screw 14 and the conductive block 15, the pressing portion 142a is finally pressed tightly against the connecting portion 120 of the elastic clamping member 12, so that the head end of the wire 4 is firmly fixed in the plug housing 11 and the head end of the wire 4 is in a stable electrical connection with the connecting portion 120 of the elastic clamping member 12. So, utilize the hasp effect of button structure 3 to realize the firm assembly of plug structure 1 and socket structure 2, centre gripping mouth 12a through elastic clamping piece 12 is to the centre gripping of the first end of contact pin 22 with interference fit mode, ensured the stable electric connection of elastic clamping piece 12 with contact pin 22, further roof pressure portion 142a through screw 14 reaches the stable electric connection effect between wire 4 and the elastic clamping piece 12 to the connecting portion 120 roof pressure of elastic clamping piece 12, like this, just realized the stable electric connection between binding post and the wire 4. Of course, since the screw 14 is made of a conductive material, the testing requirement for the electrical connection between the elastic clamping member 12 and the lead 4 can be satisfied.

When the wiring operation of the wiring terminal is not needed, the screw 14 is rotated reversely by a tool, so that the pressing part 142a of the screw 14 and the conductive block 15 generate relative displacement again, and the pressing part 142a no longer presses the connecting part 120 of the elastic clamping member 12, so that the lead 4 can be moved out of the lead inserting hole 110 of the wiring terminal;

when the wiring terminal needs to be disassembled, the button part 32 of the button structure 3 is pulled reversely, the button body 31 rotates, the force application part 34 on the button body 31 also rotates along with the button part and applies outward pushing force to the socket shell 21 until the socket shell 21 is pushed out, and the separation of the plug structure 1 and the socket structure 2 is completed.

Claims

1. A terminal, comprising:

the plug structure (1) comprises a plug shell (11) and an elastic clamping piece (12) with conductive performance, wherein the plug shell (11) is provided with a wire insertion hole (110), the elastic clamping piece (12) is positioned on the inner side of the plug shell (11), and the elastic clamping piece (12) is provided with a clamping opening (12 a);

the socket structure (2) is provided with a socket shell (21) and a pin (22), the pin (22) is positioned on the inner side of the socket shell (21), the first end of the pin (22) is clamped and fixed by the clamping end of the elastic clamping piece (12), and the second end of the pin (22) is positioned on the outer side of the socket shell (21);

the novel plug connector is characterized by further comprising a button structure (3), wherein the button structure (3) is used for fastening the plug shell (11) and the socket shell (21) in a locking manner or releasing the locking and fastening state of the plug shell (11) and the socket shell (21); wherein, the clamping opening (12a) of the elastic clamping piece (12) clamps the first end of the contact pin (22) in an interference fit mode.

2. A terminal according to claim 1, characterized in that the plug structure (1) further has:

a screw mounting hole (13) formed in the plug housing (11) substantially perpendicular to the wire insertion hole (110) and communicating with the wire insertion hole (110), a stopper portion (131) formed inside the screw mounting hole (13), and a first through hole (1310) formed in the stopper portion (131);

a screw (14) detachably mounted in the screw mounting hole (13), the screw (14) having a base (141) and a screw (142), the base (141) being located outside the first through hole (1310), the screw (142) having a pressing portion (142a) at a front end thereof, the pressing portion (142a) being located inside the first through hole (1310);

the conductive block (15) can be arranged in the screw mounting hole (13) in a reciprocating mode along the axial direction of the screw mounting hole (13), a through hole (151), a threaded hole (152) and a second through hole (153) which are communicated with each other are formed in the conductive block (15), the through hole (151) and the lead wire insertion hole (110) are arranged correspondingly to each other, and the threaded hole (152) is in threaded fit with the front end of the screw rod (142);

the head end of the elastic clamping piece (12) penetrates through the second through hole (153) and is located on the inner side of the threaded hole (152), the tail end of the elastic clamping piece (12) is arranged on the outer side of the second through hole (153), the front end of the screw rod (142) is in threaded fit with the threaded hole (152), and the jacking portion (142a) of the front end extends into the inner side of the threaded hole (152) and can jack the head end of the elastic clamping piece (12).

3. A terminal block according to claim 2, wherein the screw mounting hole (13) is formed at an inner side thereof with a defining portion (132) for fitting a head end of the spring clamp (12).

4. A terminal according to claim 2, characterized in that the spring clamp (12) comprises:

a connecting portion (120);

a first force arm (121) connected to the connecting portion (120) and located at one side of the connecting portion (120);

the second force arm (122) is connected with the connecting part (120) and is positioned at the other side of the connecting part (120);

the connecting part (120) is the head end of the elastic clamping piece, the first force arm (121) and the second force arm (122) form the tail end of the elastic clamping piece (12), and the clamping opening (12a) is formed between the movable end of the first force arm (121) and the movable end of the second force arm (122).

5. A terminal according to any one of claims 1 to 4, characterised in that the button structure (3) comprises:

a button body (31) rotatably provided inside the plug housing (11);

a button part (32) formed on the button body (31), the button part (32) being located outside the plug housing (11) and rotating with the button body (31);

and a locking part (33) formed on the button body (31), wherein the locking part (33) is positioned outside the plug housing (11) and is matched with and locked with the socket housing (21).

6. A terminal according to claim 5, wherein the locking portion (33) is a snap, and the socket housing (21) has a slot (210) for engaging with the snap.

7. A terminal according to any one of claims 2 to 4, characterised in that the plug housing (11) comprises:

a first housing (111) formed with the wire insertion hole (110);

a second housing (112) in which the screw mounting hole (13) is formed; wherein the second housing (112) is assembled with the first housing (111).

8. A terminal according to claim 7, characterized in that the second housing (112) is formed with an extension (112a) having a housing cavity (1120), the distal end of the resilient clamp (12) being disposed in the housing cavity (1120).

9. A terminal according to any one of claims 2 to 4, characterised in that the screw (14) is a screw of electrically conducting material or a screw of electrically insulating material.