CN113036552B

CN113036552B - An improved multi-core electrical connector

Info

Publication number: CN113036552B
Application number: CN202110350819.0A
Authority: CN
Inventors: 安久恋
Original assignee: Suzhou Fengnian Technology Co ltd
Current assignee: Suzhou Fengnian Technology Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2025-03-14
Anticipated expiration: 2041-03-31
Also published as: CN113036552A; CN120073433A

Abstract

The application discloses an improved multi-core number electric connector which comprises a wire end terminal seat, a plate end terminal seat, a wire protecting shell, a plurality of wire end terminals arranged in the wire end terminal seat and a plurality of plate end terminals arranged in the plate end terminal seat, wherein the wire end terminal seat, the plate end terminal seat and the wire protecting shell are coaxially arranged, the wire end terminal seat is arranged in the wire protecting shell, the plate end terminal seat is clamped at one end of the wire protecting shell, the plate end terminals are in one-to-one correspondence with the wire end terminals, and when the plate end terminal seat is clamped with the wire protecting shell, the plate end terminals can be spliced with the corresponding wire end terminals. The improved multi-core electric connector has the advantages of small volume, convenient installation and firm clamping connection.

Description

Improved multi-core electric connector

Technical Field

The invention relates to the technical field of electric connectors, in particular to an improved multi-core digital electric connector.

Background

The electric connector is widely used as a connecting element and accessory parts of an electronic signal and a power supply, is a bridge of all signals, has quality influencing the reliability of signal transmission of current, is closely related to the operation of various electronic systems and electric equipment, can be divided into a male-end 'plug' and a female-end 'socket', and can be stably transmitted after being plugged into the socket so as to ensure that the plug can not be easily loosened due to the influence of external forces such as vibration and shaking. The traditional electric connector has complex structure, is not convenient to plug between a plug and a socket, and has higher production cost. In addition, some traditional electric connectors are not foolproof between the plug and the socket, and the situation of reverse plugging exists in the process of plugging the plug and the socket, so that connection failure is caused, and the connector or the circuit is damaged under serious conditions.

The male terminal is generally installed in the plug, but the traditional electric connector has the defects of unreasonable male terminal design, complex structure, high manufacturing cost, inconvenient installation and difficult replacement when damaged. Meanwhile, due to the influence of structural design, the traditional electric connector cannot be small in size, and when the electric connector is installed on equipment such as a case, more space is occupied, the space utilization rate is low, and the miniature design of the equipment is not facilitated. In addition, the electric connector needs to be separated between the board end and the wire end under the condition of not using, the board end is internally provided with the board end terminal, the traditional electric connector is not provided with a sealing cover structure, dust is easy to deposit in the board end under the condition of not using for a long time, and the phenomenon of poor contact exists when the electric connector is used again.

Therefore, in combination with the above-mentioned technical problems, a new technical solution is necessary.

Disclosure of Invention

The invention aims to provide an electric connector which is small in size, convenient to install and firm in clamping.

The invention provides an improved multi-core electric connector, which comprises a wire end terminal seat, a plate end terminal seat, a wire protecting shell, a plurality of wire end terminals arranged in the wire end terminal seat and a plurality of plate end terminals arranged in the plate end terminal seat, wherein the wire end terminal seat, the plate end terminal seat and the wire protecting shell are coaxially arranged, the wire end terminal seat is arranged in the wire protecting shell, the plate end terminal seat is clamped at one end of the wire protecting shell, the plate end terminals are in one-to-one correspondence with the wire end terminals, and when the plate end terminal seat is clamped with the wire protecting shell, the plate end terminals can be spliced with the corresponding wire end terminals.

Further, the line terminal seat includes the main part and sets up first jack catch in the main part, the main part has grafting end and wiring end respectively along its axis direction, the grafting end of main part outwards extends along its axis direction has limit structure, the one end of first jack catch with the grafting end of main part is connected, the length direction of first jack catch with the axis direction of main part is unanimous, first jack catch symmetry is located limit structure is in the both sides of width direction, the line terminal seat passes through first jack catch with the lateral wall joint of line protection shell, limit structure orientation the board terminal seat.

Further, the wire protecting shell is provided with a clamping end and a wire penetrating end along the axial direction of the wire protecting shell, the wire end terminal seat is arranged at a position close to the clamping end, a fool-proof design is arranged between the wire end terminal seat and the wire protecting shell, clamping through holes are respectively formed in the positions, corresponding to the first clamping claws, of the side walls of the wire protecting shell, and the first clamping claws are in clamping connection with the corresponding clamping through holes.

Further, one side of the first claw away from the limiting structure is provided with a first pressing structure and a first clamping protrusion, the first clamping protrusion is symmetrically arranged on two sides of the first pressing structure in the length direction of the main body, one side of the clamping through hole penetrates through the end face of the clamping end, the clamping through hole is respectively provided with a second clamping protrusion on two inner walls of the main body in the length direction, when the first claw is clamped with the corresponding clamping through hole, the first pressing structure is positioned between the two second clamping protrusions, the first clamping protrusion is clamped with the second clamping protrusion, and the upper surface of the first pressing structure is not higher than the outer wall surface of the wire protecting shell.

Further, the wire protection shell is provided with the second jack catch respectively in its length direction's both sides, the length direction of second jack catch with the axis direction of wire protection shell is unanimous, the one end of second jack catch with the outer wall surface of wire protection shell is connected, the other end of second jack catch is the free end, the free end orientation the threading end, the outside of second jack catch is equipped with the third card and is protruding, the free end is provided with the second and presses the structure.

Further, the board terminal seat includes the board terminal body, the terminal surface of board terminal body outwards extends along its axis direction has annular protruding, the bellied both sides of annular are equipped with the card ear, be provided with a plurality of first holding chamber in the board terminal body, first holding chamber runs through respectively terminal end face and the block terminal end face of body, first holding chamber with the regional intercommunication that annular protruding encloses, board terminal installs in the first holding chamber, board terminal's grafting end stretches into in the region that annular protruding encloses when board terminal seat block is in the one end of wire protection shell, the card ear of annular protruding both sides respectively with the second jack catch joint of corresponding, board terminal and the grafting of corresponding terminal.

Further, a fool-proof structure is arranged in the area surrounded by the annular bulge, and is inserted between the limiting structure and the wire-protecting shell when the board terminal seat is clamped at one end of the wire-protecting shell, and the fool-proof structure and the limiting structure are fool-proof.

Further, the wire end terminal seat further comprises a rear cover, a plurality of second accommodating cavities are formed in the main body, the axial direction of the second accommodating cavities is consistent with that of the main body, a plurality of plug holes are formed in the extending ends of the limiting structures, the plug holes are in one-to-one correspondence with the second accommodating cavities, the plug holes are communicated with the corresponding second accommodating cavities, the wire end terminal is installed in the second accommodating cavities, the rear cover is clamped at the threading end of the main body, and when the plate end terminal seat is clamped at one end of the wire protection shell, one end of the plate end terminal is plugged with the corresponding wire end terminal through the plug holes.

Further, the line terminal includes terminal main part and shell fragment, the terminal main part includes wiring portion and grafting portion in proper order along its length direction, grafting portion orientation the spliced eye, wiring portion is including connecting portion, supporting part and the fixed part that connect gradually, the length direction of connecting portion with the length direction of line terminal is unanimous, the fixed part with connecting portion set up relatively, the one end of shell fragment with the fixed part is connected, the other end of shell fragment is the free end, the free end is kept away from towards one side extension bending of grafting portion, the free end with one side of connecting portion is contradicted, grafting portion includes first grafting portion and second grafting portion, the length direction of first grafting portion with the length direction of second grafting portion all with the length direction of connecting portion is unanimous, the one end of first grafting portion with connecting portion are connected, the one end of second grafting portion with the supporting part is connected, first grafting portion and second grafting portion set up relatively, the other end and second grafting portion are kept away from towards the opposite end of first grafting portion and the second grafting portion respectively extends towards the direction of the shell fragment.

Further, the position that the back lid corresponds every second accommodation chamber is provided with a button through-hole and a threading counter bore respectively, the button through-hole is located the threading counter bore is in one side of back lid width direction, the through wires hole has been seted up in the threading counter bore, the through wires hole runs through the back lid, install the button in the button through-hole, the one end of button with the shell fragment is contradicted, presses the button can make the free end of shell fragment is kept away from connecting portion.

The improved multi-core electrical connector of the present application has one or more of the following benefits:

(1) The improved multi-core digital electric connector has the advantages of compact structure, small volume, convenient installation and firm clamping;

(2) The improved multi-core digital electric connector has the advantages that the annular bulge extends from one side of the plate end terminal seat, one end of the wire end protecting wire shell can be inserted into the inner part of the wire end protecting wire shell when the plate end terminal seat is clamped with the wire end, so that the clamping jaw of the wire end terminal arranged in the wire protecting wire shell can be hidden to prevent the wire protecting wire shell from being unlocked due to false touch, and the clamping jaw can be matched with the sealing cover to play a sealing role;

(3) The improved multi-core digital electric connector has the advantages that the annular bulge of the plate end terminal seat is internally provided with the fool-proof structure, and the plate end terminal seat can be matched with the wire end terminal seat when being clamped with the wire end, so that the fool-proof effect is realized, and the wire end of the electric connector is ensured not to be reversely inserted;

(4) The two sides of the plate end terminal seat of the improved multi-core digital electric connector are provided with the clamping lugs, so that the clamping lugs can be matched with the clamping claws on the wire protecting shell to realize quick assembly and disassembly, and can be used for installing the sealing cover to seal the area in the annular bulge of the plate end terminal seat;

(5) The improved multi-core digital electric connector has compact structure and small volume of the terminal seat of the wire end, can be arranged in the wire protection shell and is beneficial to miniaturization of the electric connector;

(6) According to the improved multi-core digital electric connector, one side of the wire end terminal seat extends to form the limiting structure, and the limiting structure is respectively in fool-proof design with the wire protecting shell and the wire end terminal seat, so that the wire end of the electric connector can be prevented from being reversely inserted;

(7) According to the improved multi-core digital electric connector, the line terminal seat adopts the design that the keys are pressed along the axis of the line terminal seat, so that more rows of accommodating cavities can be designed according to the needs to install line terminal, the space utilization rate is high, and the installation quantity of the line terminal is more;

(8) According to the improved multi-core digital electric connector, when the terminal seat of the wire end is clamped with the wire protection shell, the first pressing structure on the claw is embedded into the inner wall of the wire protection shell, so that one end of the wire protection shell can be smoothly connected with the plate end of the electric connector, and meanwhile, the claw is well hidden, and the wire protection shell is prevented from being unlocked due to false touch;

(9) The improved multi-core digital electric connector has the advantages that the terminal of the terminal is split, the terminal main body is integrally formed, the terminal main body can be formed by stamping a metal plate with a set shape, the structure is simple, the production cost is low, the elastic sheets with different materials can be selected according to the requirements, the elastic sheets are ensured to have excellent elasticity, meanwhile, the installation is simple, and the electric connector is convenient to assemble;

(10) According to the improved multi-core digital electric connector, the baffle plate part is arranged at the wire end terminal, so that the limiting effect is achieved, and the plate end terminal can be prevented from being excessively inserted when the plate end terminal is inserted into the wire end terminal;

(11) According to the improved multi-core electric connector, the key limiting notch is formed in one end, far away from the plug-in connection part, of the terminal supporting part of the terminal, so that the effect of limiting keys can be achieved, and the keys are prevented from being excessively pressed.

Drawings

Fig. 1 is a schematic structural diagram of a multi-core electrical connector according to the present embodiment;

Fig. 2 is an exploded view of the multi-core electrical connector according to the present embodiment;

fig. 3 is an exploded view of the terminal block according to the present embodiment;

Fig. 4 is a schematic perspective view of the terminal block main body provided in the present embodiment in one direction;

Fig. 5 is a schematic perspective view of a terminal block main body in a second direction according to the embodiment;

Fig. 6 is a schematic structural view of the terminal block main body in a side view provided in the present embodiment;

fig. 7 is a schematic structural view of a rear cover of a terminal block according to the present embodiment;

Fig. 8 is a schematic structural view of the terminal block in a top view according to the present embodiment;

FIG. 9 is a cross-sectional view of FIG. 8 at A;

fig. 10 is a schematic view of the installation positions of the wire end terminal, the key and the rear cover when the wire end terminal block main body is removed according to the present embodiment;

Fig. 11 is a schematic diagram showing an installation position between the terminal block and the wire-protecting housing according to the present embodiment;

Fig. 12 is a schematic perspective view of a wire-protecting housing according to the present embodiment;

fig. 13 is a schematic structural view of the wire-protecting housing provided in the present embodiment in a top view direction;

fig. 14 is a schematic perspective view of a wire end terminal according to the present embodiment;

Fig. 15 is a schematic perspective view of a board end terminal block according to the present embodiment;

fig. 16 is a schematic view of the structure of the board terminal block provided in the present embodiment when the board terminal is mounted;

Fig. 17 is a schematic structural view of the board-end terminal block provided in the present embodiment in the axial direction;

fig. 18 is a schematic perspective view of another board end terminal block according to the present embodiment;

fig. 19 is a schematic view of the structure of the board terminal block according to the present embodiment when the sealing cover is mounted.

Wherein, 1-terminal block, 11-main body, 111-limit structure, 1111-first fool-proof rib, 112-second accommodation cavity, 113-plug hole, 114-second fool-proof rib, 115-clamping hole, 12-first claw, 121-first pressing structure, 122-first clamping protrusion, 13-rear cover, 131-key through hole, 1311-groove, 132-threading counterbore, 1321-threading hole, 133-second clamping protrusion, 134-first limit protrusion, 135-second limit protrusion, 2-plate terminal block, 21-plate terminal body, 211-first accommodation cavity, 212-screw structure, 213-nut, 214-fixed plate structure, 22-annular protrusion, 23-clamping ear, 231-groove, 232-clamping hole, 24-fool-proof structure, 241-first foolproof groove, 242-claw groove, 25-sealing cover, 251-cover plate structure, 252-handle structure, 253-snap-in projection, 3-wire-protecting housing, 31-snap-in through hole, 32-second snap-in projection, 33-second claw, 331-third snap-in projection, 332-second pressing structure, 34-second foolproof groove, 4-wire end terminal, 41-terminal body, 411-wire connection portion, 4111-connection portion, 4112-support portion, 4121-baffle portion, 41122-key-press limit notch, 4113-first fixing portion, 4114-second fixing portion, 4115-third fixing portion, 412-plug portion, 4121-first plug portion, 41211-first intermediate transition portion, 41212-first plug portion, 4122-second plug-in part, 41221-connecting section, 41222-second intermediate transition section, 41223-second plug-in section, 413-wire clamping protrusion, 414-strip-shaped groove, 42-elastic sheet, 421-first connecting section, 422-second connecting section, 423-intermediate elastic section, 424-wire pressing section, 5-plate end terminal, 6-key, 7-snap ring structure, 8-cable sealing ring and 9-tail nut.

Detailed Description

In order to further describe the technical means and effects adopted for achieving the preset aim of the invention, the following detailed description is given below of the specific implementation, structure, characteristics and effects according to the invention with reference to the attached drawings and the preferred embodiments.

Examples

The present embodiment discloses an improved multi-core electrical connector comprising a wire end terminal block 1, a board end terminal block 2 and a wire protecting housing 3 coaxially arranged, as shown in fig. 1 and 2. A plurality of wire end terminals 4 are arranged in the wire end terminal seat 1, and a plurality of plate end terminals 5 are arranged in the plate end terminal seat 2. In the present embodiment, an 18-core electrical connector is taken as an example for explanation, that is, 18 terminals are provided in each of the terminal block 1 and the board-end terminal block 2. The wire end terminal block 1 is mounted in the wire-protecting housing 3. The board-end terminal block 2 is clamped at one end of the wire-protecting housing 3. The plate end terminals 5 are in one-to-one correspondence with the wire end terminals 4, and when the plate end terminal seat 2 is clamped with the wire protection housing 3, the plate end terminals 5 can be spliced with the corresponding wire end terminals 4.

As shown in fig. 3, the terminal block 1 includes a main body 11 and a rear cover 13. As shown in fig. 4 to 6, the main body 11 has a plug-in end and a wire-passing end, respectively, in the axial direction thereof. The plugging end of the main body 11 extends outwards along the axial direction of the main body to form a limiting structure 111. A plurality of second accommodating cavities 112 are arranged in the main body 11, and the axial direction of the second accommodating cavities 112 is consistent with the axial direction of the main body 11. An end of the second accommodating chamber 112 facing the threading end communicates with the outside of the main body 11. The extending end of the limiting structure 111 is provided with a plurality of inserting holes 113, the inserting holes 113 are in one-to-one correspondence with the second accommodating cavities 112, and the inserting holes 113 are communicated with the corresponding second accommodating cavities 112. The main body 11 is provided with a first claw 12, and the clamping end of the first claw 12 faces the inserting end. The rear cover 13 is engaged with the threading end of the main body 11, as shown in fig. 8.

As shown in fig. 5, the length direction of the limit structure 111 coincides with the length direction of the main body 11. Both ends of the limit structure 111 in the length direction are aligned with both ends of the main body 11 in the length direction. The plurality of plugging holes 113 are divided into a plurality of rows along the width direction of the limiting structure 111, and the plurality of plugging holes 113 in each row are arranged at intervals along the length direction of the limiting structure 111. The present embodiment is described by taking an 18-core electrical connector as an example, so that two rows of 9 plugging holes 113 are provided on the main body 11 of the terminal block 1 shown in fig. 5. Of course, in the specific implementation, other rows may be disposed on the main body 11 of the terminal block 1, and each row may also include other plural plug holes 113, for example, 30-core electrical connectors, three rows may be disposed, and 10 plug holes 113 may be disposed in each row. Correspondingly, the second accommodating cavities 112 are arranged in the main body 11 according to the same rule as the plugging holes 113.

The two sides of the limiting structure 111 in the width direction are respectively provided with a plurality of first fool-proof ribs 1111, as shown in fig. 3 or fig. 5. The length direction of the first fool-proof ribs 1111 is consistent with the axis direction of the main body 11, a plurality of first fool-proof ribs 1111 on the same side are distributed at intervals along the length direction of the limiting structure 111, and the number of the first fool-proof ribs 1111 on two sides of the limiting structure 111 is different, so that fool-proof effect can be achieved. Of course, the first fool-proof rib 1111 may also have fool-proof effects by different intervals, different sizes, different shapes, or the like.

As shown in fig. 6, one end of the first claw 12 is connected with the plugging end of the main body 11, the length direction of the first claw 12 is consistent with the axial direction of the main body 11, and the first claw 12 is symmetrically arranged at two sides of the limiting structure 111 in the width direction. The first claw 12 is provided with a first pressing structure 121 and a first clamping protrusion 122 on a side far away from the limiting structure 111, and the first clamping protrusion 122 is symmetrically arranged on two sides of the first pressing structure 121 in the length direction of the main body 11. The first pressing structure 121 is preferably a long protrusion, and its longitudinal direction is identical to the longitudinal direction of the main body 11. The upper surface of the first pressing structure 121 is provided with an anti-slip structure. The anti-slip structure is preferably a long groove, and the length direction of the long groove is consistent with the length direction of the first pressing structure 121. Of course, the anti-slip structure may be of other shapes and other arrangements. In order to prevent uneven cooling due to the excessive thickness of the first pressing structure 121 during the manufacturing process, thereby causing the deformation of the first jaw 12, the first pressing structure 121 may be designed in a theft material, i.e., the first pressing structure 121 is designed to be hollow. One side of the first clamping protrusion 122, which faces the main body 11, is designed as an inclined plane, and one end of the inclined plane, which is far away from the first clamping jaw 12, is inclined in a direction far away from the main body 11. The side of the first clamping protrusion 122 facing away from the main body 11 is designed as an inclined plane, that is, the clamping surface of the first clamping protrusion 122 is designed as an inclined plane, and one end of the clamping surface of the first clamping protrusion 122, which is far away from the first claw 12, is inclined towards the direction far away from the main body 11.

As shown in fig. 5, the main body 11 is provided with a plurality of second fool-proof ribs 114 on both sides in the length direction thereof. The length direction of the second fool-proof ribs 114 is consistent with the axis direction of the main body 11, and a plurality of second fool-proof ribs 114 located at the same side are distributed at intervals along the width direction of the main body 11. Preferably, two second fool-proof ribs 114 are respectively disposed on two sides of the main body 11 in the length direction, and the intervals between the second fool-proof ribs 114 disposed on two sides of the main body 11 are different, so as to play a fool-proof role. Of course, the second fool-proof ribs 114 may also be different in number, size, shape, etc.

As shown in fig. 4 or fig. 5, two side walls of the main body 11 in the width direction are respectively provided with a plurality of clamping holes 115, and the clamping holes 115 are close to the threading end. The clamping holes 115 are in one-to-one correspondence with the accommodating cavities located at the outermost side of the main body 11 in the width direction, and the clamping holes 115 are communicated with the corresponding accommodating cavities. The two ends of the rear cover 13 in the width direction are respectively provided with a plurality of second clamping protrusions 133, when the rear cover 13 is clamped at the threading end of the main body 11, the second clamping protrusions 133 are in one-to-one correspondence with the clamping holes 115, and the second clamping protrusions 133 are clamped with the corresponding clamping holes 115.

As shown in fig. 3 and 9, the rear cover 13 is provided with a key through hole 131 and a threading counter bore 132 corresponding to each of the second accommodating chambers 112. The key through hole 131 is located at one side of the threading counter bore 132 in the width direction of the rear cover 13, a threading hole 1321 is formed in the threading counter bore 132, and the threading hole 1321 penetrates through the rear cover 13. On the opposite surfaces of the rear cover 13 and the main body 11, a first limiting protrusion 134 is disposed corresponding to each threading counter bore 132, and the threading hole 1321 penetrates through the first limiting protrusion 134, as shown in fig. 7. The key through hole 131 is provided with second limit protrusions 135 on two sides of the rear cover 13 in the length direction on a side surface of the rear cover 13 away from the main body 11. The length direction of the second limit projection 135 is identical to the width direction of the rear cover 13. One side of the second limiting protrusion 135 is aligned with the inner wall of the key through hole 131. The key through hole 131 is provided with grooves 1311 on inner walls of two sides of the rear cover 13 in the length direction, the length direction of the grooves 1311 is consistent with the axial direction of the key through hole 131, and one end of the grooves 1311 extends to one side of the second limiting protrusion 135 and penetrates through the end of the second limiting protrusion 135.

As shown in fig. 11, the wire end terminal block 1 is engaged with a side wall of the wire protection housing 3 by the first claw 12, and the limiting structure 111 faces the board end terminal block 2. The wire protecting shell 3 is respectively provided with a clamping end and a wire penetrating end along the axial direction of the wire protecting shell. The wire end terminal seat 1 is arranged at a position close to the clamping end. The side walls of the wire-protecting housing 3 are respectively provided with a clamping hole 31 at the position corresponding to the first clamping jaw 12, and the first clamping jaw 12 is clamped with the corresponding clamping hole 31. As shown in fig. 12 and 13, one side of the clamping through hole 31 penetrates through the end surface of the clamping end, two inner walls of the clamping through hole 31 in the length direction of the main body 11 are respectively provided with a second clamping protrusion 32, when the first clamping jaw 12 is clamped with the corresponding clamping through hole 31, the first pressing structure 121 is located between the two second clamping protrusions 32, the first clamping protrusion 122 is clamped with the second clamping protrusion 32, and the upper surface of the first pressing structure 121 is not higher than the outer wall surface of the wire protection casing 3. The second claws 33 are respectively arranged at two sides of the wire protecting housing 3 in the length direction, and the length direction of the second claws 33 is consistent with the axial direction of the wire protecting housing 3. One end of the second claw 33 is connected with the outer wall surface of the wire protection shell 3, and the other end of the second claw 33 is a free end, and the free end faces the threading end. The outer side of the second jaw 33 is provided with a third clamping protrusion 331, and the free end is provided with a second pressing structure 332. The inner wall of the wire-protecting shell 3 is provided with a second fool-proof groove 34, when the wire-end terminal seat 1 is installed in the wire-protecting shell 3, the second fool-proof ribs 114 on two sides of the main body 11 of the wire-end terminal seat 1 are matched and spliced with the second fool-proof groove 34, so that fool-proof effect is achieved, and the wire-end terminal seat 1 is prevented from being installed in wrong direction. The threading end of the wire protection shell 3 is provided with a thread structure, and the end part of the wire protection shell is provided with a tooth-shaped structure. The threading end of the wire protection shell 3 is provided with a clamping ring structure 7, and a tooth-shaped structure on the clamping ring structure 7 is clamped with a tooth-shaped structure at one end of the wire protection shell 3. The cable is inserted into the protective wire housing 3 from the snap ring structure 7 to be connected with the wire end terminal 4 in the wire end terminal seat 1, and then fastened by the tail nut 9. And a cable sealing ring 8 is further arranged in the clamping ring structure 7, and the cable sealing ring 8 is sleeved between the cable and the clamping ring structure 7.

As shown in fig. 14, the wire-end terminal 4 includes a terminal body 41 and a spring piece 42. The terminal body 41 is formed by integrally pressing a metal plate, preferably phosphor bronze. The terminal body 41 includes a connection portion 411 and a plug portion 412 in this order along its length direction. The connection portion 411 includes a connection portion 4111, a support portion 4112, and a fixing portion, which are sequentially connected. The length direction of the connection portion 4111 matches the length direction of the wire end terminal 4. The fixing portion is disposed opposite to the connecting portion 4111, one end of the elastic piece 42 is connected to the fixing portion, the other end of the elastic piece 42 is a free end, the free end extends and bends towards a side away from the plugging portion 412, and the free end abuts against one side of the connecting portion 4111. The plugging portion 412 includes a first plugging portion 4121 and a second plugging portion 4122, the length direction of the first plugging portion 4121 and the length direction of the second plugging portion 4122 are consistent with the length direction of the connecting portion 4111, one end of the first plugging portion 4121 is connected with the connecting portion 4111, one end of the second plugging portion 4122 is connected with the supporting portion 4112, the first plugging portion 4121 and the second plugging portion 4122 are oppositely disposed, and the other end of the first plugging portion 4121 and the other end of the second plugging portion 4122 respectively extend in a direction away from the elastic sheet 42.

The support portion 4112 is perpendicular to the connection portion 4111, and the fixing portion and the connection portion 4111 are respectively located on the same side of the support portion 4112. The fixing portions include a first fixing portion 4113, a second fixing portion 4114, and a third fixing portion 4115. The longitudinal direction of the first fixing portion 4113 and the longitudinal direction of the second fixing portion 4114 are respectively identical to the longitudinal direction of the connecting portion 4111. The first fixing portion 4113 and the second fixing portion 4114 are disposed at intervals in the longitudinal direction, and the third fixing portion 4115 is located between the first fixing portion 4113 and the connecting portion 4111. The elastic piece 42 sequentially includes a first connection section 421, a second connection section 422, an intermediate elastic section 423, and a wire pressing section 424. When the spring piece 42 is mounted on the terminal body 41, the first connecting section 421 is located between the first fixing portion 4113 and the third fixing portion 4115, the second connecting section 422 is located on a side of the second fixing portion 4114 away from the connecting portion 4111, and the first fixing portion 4113, the second fixing portion 4114 and the third fixing portion 4115 are designed to be offset, so that the spring piece 42 can be firmly clamped on the terminal body 41, and of course, in order to ensure the mounting reliability, the spring piece 42 and each fixing portion of the terminal body 41 can be fixed by welding or other means as necessary. The middle elastic section 423 is of a bending design, so that the elastic sheet 42 can be ensured to have certain tension and resilience. The wire segment 424 abuts against the connecting portion 4111. The pre-tightening force is provided between the wire pressing section 424 and the connecting portion 4111, so that a certain clamping force can be ensured to be always maintained between the wire pressing section 424 and the connecting portion 4111. The connection portion 4111 is provided with a plurality of wire clamping protrusions 413 on a side abutting against the wire pressing section 424, so that friction force between the connection portion 4111 and the wire can be increased, and connection between the wire and the wire terminal 4 is more firm. A plurality of strip-shaped grooves 414 may be further formed on a side of the connection portion 4111 abutting against the wire pressing section 424, and the plurality of strip-shaped grooves 414 are disposed at intervals along the length direction of the connection portion 4111, so as to further increase the friction between the connection portion 4111 and the wire.

The first plugging portion 4121 sequentially includes a first intermediate transition section 41211 and a first plugging section 41212 along a length direction thereof, one end of the first intermediate transition section 41211 is connected with the connecting portion 4111, the other end of the first intermediate transition section 41211 is inclined toward a direction approaching the elastic sheet 42, and the first plugging section 41212 is inclined toward a direction away from the elastic sheet 42. The second plugging portion 4122 is located on one side of the supporting portion 4112, where the elastic sheet 42 is provided, the second plugging portion 4122 sequentially includes a connection section 41221, a second intermediate transition section 41222, and a second plugging section 41223 along the length direction thereof, the connection section 41221 of the second plugging portion 4122 is connected to the supporting portion 4112, the connection section 41221 of the second plugging portion 4122 is parallel to the connection portion 4111, the second intermediate transition section 41222 is inclined toward a direction approaching the connection portion 4111, and the second plugging section 41223 is inclined toward a direction far away from the connection portion 4111. The side of the support portion 4112, on which the spring plate 42 is provided, is provided with a baffle portion 41121, the baffle portion 41121 is perpendicular to the support portion 4112 and the connection portion 4111, and the baffle portion 41121 is close to the connection portion 4111. The baffle portion 41121 serves as a stopper, and by providing the baffle portion 41121, the board end terminal can be prevented from being excessively inserted when the board end terminal is inserted into the line end terminal 4.

When the wire end terminal 4 is mounted in the second accommodating cavity 112, the plugging end of the wire end terminal 4 faces the plugging hole 113, the plugging hole 113 is aligned with the middle of the first plugging portion 4121 and the second plugging portion 4122 of the wire end terminal 4, one end of the board end terminal 5 can pass through the plugging hole 113 to be communicated with the first plugging portion 4121 and the second plugging portion 4122, the first plugging section 41212 and the second plugging section 41223 can play a guiding role, and one end of the board end terminal 5 can be ensured to be smoothly inserted between the first plugging portion 4121 and the second plugging portion 4122. When the rear cover 13 is engaged with the threading end of the main body 11, the end of the first limiting protrusion 134 on the rear cover 13 abuts against one end of the corresponding wire end terminal 4, as shown in fig. 9 and 10, and performs a limiting function. A key 6 is installed in each key through hole 131 of the rear cover 13, one end of the key 6 abuts against the middle elastic segment 423 of the elastic sheet 42 of the wire end terminal 4, as shown in fig. 10, pressing the key 6 can make the wire pressing segment 424 of the elastic sheet 42 far away from the connecting portion 4111. The supporting portion 4112 has a key-limiting notch 41122 at an end thereof away from the plugging portion 412, and the key-limiting notch 41122 may play a role in limiting the key 6, so as to prevent the key 6 from being excessively pressed. One side of the key 6 contacts with the outer side of the first limiting protrusion 134, and the first limiting protrusion 134 may also play a role in guiding the key 6, so as to ensure that the key 6 may smoothly move along the axial direction of the line terminal 4.

As shown in fig. 15 to 19, the board-end terminal block 2 includes a board-end body 21, and the board-end body 21 has a terminal end and a snap-fit end, respectively, in an axial direction thereof. The end face of the clamping end extends outwards along the axial direction of the plate end body 21 to form an annular protrusion 22 and a fool-proof structure 24. The fool-proof structure 24 is located in the area enclosed by the annular protrusion 22. The inner corners of the annular protrusions 22 are provided with chamfers. Two sides of the annular bulge 22 are provided with clamping lugs 23. A plurality of first accommodating cavities 211 are arranged in the plate end body 21, and the first accommodating cavities 211 respectively penetrate through the terminal end face and the clamping end face of the plate end body 21. The first accommodating cavity 211 is connected with the area surrounded by the annular protrusion 22. The board end terminal 5 is mounted in the first accommodation chamber 211. The insertion end of the plate-end terminal 5 extends into the area enclosed by the annular projection 22. As shown in fig. 15, the engaging lugs 23 are located on both sides of the annular protrusion 22 in the longitudinal direction of the plate end body 21, the longitudinal direction of the engaging lugs 23 is identical to the axial direction of the plate end body 21, and the engaging ends of the engaging lugs 23 extend in a direction away from the plate end body 21. The clamping lug 23 faces one side of the annular protrusion 22, a groove 231 is formed in the side of the annular protrusion, the length direction of the groove 231 is consistent with that of the clamping lug 23, one end of the groove 231 penetrates through the end face of the clamping end of the clamping lug 23, a clamping hole 232 is formed in the clamping lug 23, and the clamping hole 232 is communicated with the groove 231. When the board terminal seat 2 is engaged with one end of the wire protecting housing 3, the engaging end of the wire protecting housing 3 is inserted into the area surrounded by the annular protrusion 22, the engaging lugs 23 on both sides of the annular protrusion 22 are engaged with the corresponding second claws 33, and the board terminal 5 is inserted into the corresponding wire terminal 4.

As shown in fig. 15 and 16, the fool-proof structure 24 is two elongated protrusions arranged in parallel at intervals, and the length direction of the elongated protrusions is consistent with the length direction of the plate end body 21. The first accommodating chambers 211 are located between the two elongated protrusions, and the opposite surfaces of the two elongated protrusions are respectively provided with a plurality of first foolproof grooves 241. The length direction of the first fool-proof grooves 241 is consistent with the axis direction of the plate end body 21, and a plurality of first fool-proof grooves 241 on the same elongated protrusion are distributed at intervals along the length direction of the plate end body 21, and the number of the first fool-proof grooves 241 on two elongated protrusions is different, or the intervals are different, or the sizes are different, or the shapes are different. When the board terminal seat 2 is clamped at one end of the wire-protecting housing 3, the fool-proof structure 24 is inserted between the limiting structure 111 and the wire-protecting housing 3, and the first fool-proof groove 241 on the fool-proof structure 24 is inserted with the first fool-proof rib 1111 on the limiting structure 111, so as to play a fool-proof role, and prevent the board terminal seat 2 from being reversely connected with the wire terminal seat 1. The claw grooves 242 are respectively formed in the deviating surfaces of the two strip-shaped protrusions, one side of each claw groove 242 penetrates through the end face of the extending end of the strip-shaped protrusion, the groove bottom of each claw groove 242 is designed to be an inclined surface, one end of the groove bottom, far away from the plate end body 21, is inclined towards the direction close to the first foolproof groove 241, and due to the structural design, the first claws 12 can smoothly enter the claw grooves 242 when the plate end terminal seat 2 is clamped at one end of the wire protecting shell 3, and the plate end terminal seat 2can smoothly and tightly clamped at one end of the wire protecting shell 3.

The board-end terminal block 2 of the present embodiment may be provided with a screw structure 212 at the terminal thereof, and as shown in fig. 18, the board-end terminal block 2 is mounted on the mounting surface to be mounted by the screw structure 212 in cooperation with a nut 213. The board-end terminal block 2 of the present embodiment may also be provided with a fixing plate structure 214 on the outer peripheral surface of the board-end body 21, as shown in fig. 15 to 17, the axial direction of the fixing plate structure 214 is consistent with the axial direction of the board-end body 21, and the board-end terminal block 2 is mounted on the mounting surface to be mounted by the fixing plate structure 214 in cooperation with a fastener.

In a further embodiment, the board-end terminal block 2 may be further provided with a sealing cover 25, the sealing cover 25 is engaged with the engaging end of the board-end body 21, and the sealing cover 25 seals the area surrounded by the annular protrusion 22, so as to play a role in dust prevention when the connector terminal is detached. As shown in fig. 19, the sealing cover 25 includes a cover structure 251 and a handle structure 252 provided at one side of the cover structure 251. The handle structure 252 is provided with a locking protrusion 253 at two sides of the handle structure in the length direction, when the sealing cover 25 is locked at the locking end of the plate end body 21, the cover structure 251 seals the area surrounded by the annular protrusion 22, the two ends of the handle structure 252 in the length direction are respectively locked into the grooves 231 of the two locking lugs 23, and the locking protrusion 253 is locked with the corresponding locking hole 232.

In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a list of elements is included, and may include other elements not expressly listed.

In this document, terms such as front, rear, upper, lower, etc. are defined with respect to the positions of the components in the drawings and with respect to each other, for clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the claimed application.

The embodiments described above and features of the embodiments herein may be combined with each other without conflict. The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

1. An improved multi-core electrical connector, characterized in that it comprises a wire end terminal block (1), a board end terminal block (2), a wire protection shell (3), a plurality of wire end terminals (4) installed in the wire end terminal block (1), and a plurality of board end terminals (5) installed in the board end terminal block (2), wherein the wire end terminal block (1), the board end terminal block (2) and the wire protection shell (3) are coaxially arranged, the wire end terminal block (1) is installed in the wire protection shell (3), the board end terminal block (2) is engaged with one end of the wire protection shell (3), the board end terminals correspond to the wire end terminals (4) one by one, and when the board end terminal block (2) is engaged with the wire protection shell (3), the board end terminals (5) can be plugged into the corresponding wire end terminals (4);

The wire end terminal seat (1) comprises a main body (11) and a first clamping claw (12) arranged on the main body (11), a plurality of second accommodating cavities (112) are arranged in the main body (11), the main body (11) has a plug-in end and a wiring end respectively along its axial direction, the plug-in end of the main body (11) extends outwardly along its axial direction to form a limiting structure (111), one end of the first clamping claw (12) is connected to the plug-in end of the main body (11), the length direction of the first clamping claw (12) is consistent with the axial direction of the main body (11), the first clamping claw (12) is symmetrically arranged on both sides of the limiting structure (111) in the width direction, the wire end terminal seat (1) is clamped with the side wall of the wire protection shell (3) through the first clamping claw (12), and the limiting structure (111) faces the board end terminal seat (2);

The wire protection housing (3) has a clamping end and a wire threading end along its axial direction, the wire end terminal seat (1) is installed at a position close to the clamping end, and a foolproof design is provided between the wire end terminal seat (1) and the wire protection housing (3). The side wall of the wire protection housing (3) is provided with clamping through holes (31) at positions corresponding to the first clamping claws (12), and the first clamping claws (12) are clamped with the corresponding clamping through holes (31);

A first pressing structure (121) and a first clamping protrusion (122) are provided on a side of the first clamping claw (12) away from the limiting structure (111); the first clamping protrusion (122) is symmetrically arranged on both sides of the first pressing structure (121) in the length direction of the main body (11); one side of the clamping through hole (31) passes through the end surface of the clamping end; and second clamping protrusions (32) are respectively provided on two inner walls of the clamping through hole (31) in the length direction of the main body (11); when the first clamping claw (12) is clamped with the corresponding clamping through hole (31), the first pressing structure (121) is located between the two second clamping protrusions (32); the first clamping protrusion (122) is clamped with the second clamping protrusion (32); and the upper surface of the first pressing structure (121) is not higher than the outer wall surface of the wire protection housing (3);

The wire protection housing (3) is provided with second claws (33) on both sides in the length direction thereof, the length direction of the second claw (33) is consistent with the axial direction of the wire protection housing (3), one end of the second claw (33) is connected to the outer wall surface of the wire protection housing (3), the other end of the second claw (33) is a free end, the free end faces the threading end, a third clamping protrusion (331) is provided on the outer side of the second claw (33), and the free end is provided with a second pressing structure (332);

The wire end terminal seat (1) further comprises a rear cover (13); the wire end terminal comprises a terminal body (41) and a spring (42); the terminal body (41) comprises a wiring portion (411) and a plug-in portion (412) in sequence along its length direction; the wiring portion (411) comprises a connecting portion (4111);

The rear cover (13) is provided with a button through hole (131) and a threading countersunk hole (132) at a position corresponding to each of the second accommodating cavities (112), the button through hole (131) being located on one side of the threading countersunk hole (132) in the width direction of the rear cover (13), the threading countersunk hole (132) being provided with a threading hole (1321), the threading hole (1321) passing through the rear cover (13), a button (6) being installed in the button through hole (131), one end of the button (6) being in contact with the spring sheet (42), and pressing the button (6) can cause the free end of the spring sheet (42) to move away from the connecting portion (4111).

2. The improved multi-core electrical connector according to claim 1 is characterized in that the board-end terminal seat (2) comprises a board-end body (21), one end face of the board-end body (21) has an annular protrusion (22) extending outwardly along its axial direction, and both sides of the annular protrusion (22) are provided with latch ears (23), and a plurality of first accommodating cavities (211) are arranged in the board-end body (21), and the first accommodating cavities (211) respectively penetrate the wiring terminal end face and the engaging end face of the body, and the first accommodating cavities (211) and the annular protrusion (22) surround The board-end terminal (5) is connected within the area surrounded by the annular protrusion (22), the board-end terminal (5) is installed in the first accommodating cavity (211), the plug-in end of the board-end terminal (5) extends into the area surrounded by the annular protrusion (22), and when the board-end terminal seat (2) is engaged with one end of the wire protection shell (3), the clamping end of the wire protection shell (3) is inserted into the area surrounded by the annular protrusion (22), the clamping ears (23) on both sides of the annular protrusion (22) are respectively clamped with the corresponding second clamping claws (33), and the board-end terminal (5) is plugged into the corresponding wire-end terminal (4).

3. The improved multi-core electrical connector according to claim 2 is characterized in that an anti-fool structure (24) is provided in the area enclosed by the annular protrusion (22), and when the board-end terminal seat (2) is engaged with one end of the wire protection housing (3), the anti-fool structure (24) is inserted between the limiting structure (111) and the wire protection housing (3), and an anti-fool design is provided between the anti-fool structure (24) and the limiting structure (111).

4. The improved multi-core electrical connector according to claim 2 is characterized in that the axial direction of the second accommodating cavity (112) is consistent with the axial direction of the main body (11), and a plurality of plug holes (113) are provided at the extended end of the limiting structure (111), and the plug holes (113) correspond to the second accommodating cavity (112) one by one, and the plug holes (113) are connected with the corresponding second accommodating cavity (112), and the wire end terminal (4) is installed in the second accommodating cavity (112), and the back cover (13) is engaged with the threading end of the main body (11), and when the board terminal seat (2) is engaged with one end of the wire protection shell (3), one end of the board terminal (5) is plugged into the corresponding wire end terminal (4) through the plug hole (113).

5. The improved multi-core electrical connector according to claim 4 is characterized in that the plug-in portion (412) faces the plug-in hole (113), the wiring portion (411) comprises a connecting portion (4111), a supporting portion (4112) and a fixing portion connected in sequence, the length direction of the connecting portion (4111) is consistent with the length direction of the wire end terminal (4), the fixing portion and the connecting portion (4111) are arranged opposite to each other, one end of the spring sheet (42) is connected to the fixing portion, and the other end of the spring sheet (42) is a free end, the free end extends and bends toward a side away from the plug-in portion (412), and the free end contacts one side of the connecting portion (4111). The plug-in portion (412) comprises a first plug-in portion (4121) and a second plug-in portion (4122); the length direction of the first plug-in portion (4121) and the length direction of the second plug-in portion (4122) are both consistent with the length direction of the connecting portion (4111); one end of the first plug-in portion (4121) is connected to the connecting portion (4111); one end of the second plug-in portion (4122) is connected to the supporting portion (4112); the first plug-in portion (4121) and the second plug-in portion (4122) are arranged opposite to each other; the other end of the first plug-in portion (4121) and the other end of the second plug-in portion (4122) respectively extend in a direction away from the spring sheet (42).