CN217823484U

CN217823484U - Fastener linkage device of connector

Info

Publication number: CN217823484U
Application number: CN202220866387.9U
Authority: CN
Inventors: 刘大裕
Original assignee: Mantis High Co ltd
Current assignee: Mantis High Co ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-11-15
Anticipated expiration: 2032-04-14

Abstract

The utility model provides a buckle linkage device of a connector, which comprises a connector, a circuit board and a wire rod are arranged in the connector, and an assembly part and an installation part are arranged on the top wall; the clamping and buckling piece is provided with a main body part arranged on the assembling part, an extending part extending from the main body part, and an elastic part which is formed by the main body part extending in a protruding way towards the direction far away from the extending part and is positioned on the installing part, and the extending part is provided with a hooking and buckling part protruding out of the top wall and used for clamping and buckling with a butt joint female seat; and the linkage assembly is combined with the mounting part, so that the buckling part is positioned between the mounting part and the linkage assembly, and is provided with a first linkage part and a second linkage part, the second linkage part is connected with the first linkage part and the connector, the first linkage part is positioned above the elastic part and is provided with a pressing part, and when the second linkage part is pulled, the pressing part can be linked to push and press the elastic part to move and link the main body part, the extending part and the hooking part to elastically deflect for a distance.

Description

Fastener linkage device of connector

Technical Field

The present invention relates to a connector, and more particularly to a buckle linkage device for a connector with a better electrical connection and a releasing function.

Background

In many current consumer electronic products, such as computer technology, the development trend is also toward a strong operation function, a fast speed and a small volume, so that the number of computer communication ports is also reduced, and such communication ports may be used on other devices with plugs of the same specification, so that the electrical connector can be positioned in a docking connector and electrically connected therewith to transmit signals.

The communication ports in these devices are wire plugs or wire connectors of cable combination plugs, except for sockets, which usually have the situation of directly pulling wires during the plugging process, and when the wire plugs/wire connectors are not supported or fixed by any structure or are subjected to an external force along an up-and-down direction after being butted with the butting female connector, the butting female connector is not supported or buckled by the wire connectors, so that the wire connectors are easy to fall off due to shaking or collision after being plugged into the female connector, and further the transmission of signals is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide a connector buckle linkage device, which is connected to the first linkage member and the housing through the second linkage member, and utilizes the hook portion to protrude upward the top wall and engage with the female seat, or the second linkage member pushes down the movable portion to move the hook portion to move the elastic downward for a distance to disengage the separation effect when pulling. The buckle linkage device of the connector is simple in structure, convenient to operate, stable in buckle and high in reliability.

Another object of the present invention is to provide a buckle linkage device of a connector, which is easy to operate, firm in positioning, not easy to fall off and shake, and has reliable electrical contact effect.

To achieve the above object, the present invention provides a buckle linkage device of a connector, which comprises:

the connector is provided with a top wall, two side walls, a first end and a second end, the first end and the second end are respectively positioned at two opposite sides of the top wall far away from the two side walls and respectively contain a circuit board and wires, and the top wall is provided with an assembling part and an installing part close to the second end;

the buckling piece is provided with a main body part arranged on the assembling part, at least one extending part extending from the main body part and at least one elastic part, the extending part is provided with a buckling part protruding out of the top wall, the buckling part is used for buckling with a butt joint female seat, and the elastic part is formed by the main body part in a protruding mode towards the direction far away from the extending part and is positioned on the installing part; and

the linkage assembly is provided with a first linkage piece and a second linkage piece, the second linkage piece is connected with the first linkage piece and the connector, the first linkage piece is positioned above the elastic part and is provided with a pressing part, when the second linkage piece is pulled, the first linkage piece can be linked, the pressing part pushes and presses the elastic part to move, and the main body part, the extending part and the hooking part are linked to elastically deviate by a distance.

The buckle interlock of connector, wherein: the center of the assembly part is provided with a downward through combination groove far away from the installation part, the combination groove is communicated with the installation part, and one end of the second linkage piece is connected with the combination groove.

The buckle interlock of connector, wherein: the buckle piece is also provided with a passive part, the passive part is convexly extended from the main body part towards the direction far away from the extension part, and the two elastic parts are symmetrically formed and are formed by the main body part which is bent and convexly extended towards the direction far away from the extension part.

The buckle interlock of connector, wherein: the at least one elastic part of the fastener is provided with a bending part, and the bending part is bent to form an arc-shaped bending line towards the mounting part, so that the elastic part forms a first section and a second section extending from the first section, and the first section and the main body part are respectively at different horizontal heights.

The buckle interlock of connector, wherein: the installation part of the connector is provided with a containing groove for containing the convex elastic part and the driven part, the containing groove is formed with a concave surface horizontally opposite to the top wall, two opposite sides of the containing groove are concavely provided with guide rails, and the first linkage part is provided with a slide block corresponding to the guide rails.

The buckle interlock of connector, wherein: the first section of the elastic part is connected with the main body part and extends downwards, the first section corresponds to a first pressing position of the pressing part, and the second section is connected with the first section and extends along the horizontal direction.

The buckle interlock of connector, wherein: the assembling part is provided with a slot close to the first end and an assembling groove with a side end communicated with the slot, the extending part extends into the slot, and the hooking part extends from the direction far away from the main body part to be formed on the extending part and protrudes upwards from the top wall.

The buckle interlock of connector, wherein: the driven part is adjacent to the first section, a pressed section is arranged at a second pressing position of the driven part relative to the pressing part, and the pressed section can be pushed by the second pressing position to enable the driven part to move.

The buckle interlock of connector, wherein: the first link member is provided with a penetrating slot which penetrates through the relative top and bottom of the first link member and is communicated with the mounting part, and when the second link member penetrates through the first link member and the elastic part, penetrates through the combining slot and then turns back, penetrates through the penetrating slot and turns back, enters the accommodating groove of the mounting part and is connected to form a connecting part.

The buckle interlock of connector, wherein: the inner side wall surfaces of the two side walls are provided with horizontal rails, two sides of the circuit board are oppositely provided with rail convex parts, the rail convex parts are combined with the horizontal rails to form positioning, one end of the circuit board is positioned at the first end, the first end can be inserted into the butt joint female seat to form electric connection, and the other end of the circuit board is electrically connected with the wire.

By means of the structure, the main body part and the extending part of the buckling part are arranged on the assembling part in an extending mode, the buckling part is located between the installing part and the first linkage part, the second linkage part is connected with the first linkage part and the connector, when the buckling part of the extending part protrudes upwards out of the top wall, the buckling part can be buckled with a butt joint female seat, or when the second linkage part is pulled, the first linkage part can be linked, the pressing part moves forwards to generate downward pushing and pressing to enable the elastic part to move, and the buckling part elastically deflects downwards by a distance to achieve buckling releasing. The buckle releasing scheme can ensure that the pressing part of the first linkage part moves forwards and pushes the elastic part downwards to move downwards, and then the hooking part is linked to be separated from the butt joint female seat to be in a releasing state, so that the reliability of buckle and releasing can be improved, and the effect of facilitating electric connection of the buckle is achieved.

Drawings

Fig. 1 is a schematic view of the combination of the buckle linkage device of the connector of the present invention;

fig. 2 is an exploded view of the latch linkage of the connector of the present invention;

FIGS. 3A and 3B are different perspective views of the connector of FIG. 2;

FIG. 3C is a schematic view of the first linkage member of FIG. 2;

FIGS. 4A and 4B are schematic sectional views A-A and B-B of FIG. 1, respectively;

FIG. 5 is a cross-sectional view of the latch of FIG. 1 (for convenience of viewing, a portion of the latch remains in abutting engagement with the female socket);

FIGS. 6A and 6B are schematic views of the trip of FIG. 1;

fig. 7 is a schematic view of the buckle linkage device and the female docking seat of the connector of the present invention.

The reference numbers indicate: 100-snap linkage of connector; 1-a connector; 10-a housing; 11-a top wall; 12-a side wall; 121-horizontal rail; 122-a guide wall; 123-a guide groove; 13-a first end; 14-a second end; 141-an insertion hole; 15-an assembly part; 151-assembly grooves; 152-a slot; 153-a coupling groove; 16-a mounting portion; 161-accommodating grooves; 162-a concave surface; 163-a limiting groove; 164-a guide rail; 2-a fastener; 21-a main body portion; 22-an extension; 221-hook part; 23-an elastic portion; 231-a bending part; 232-first segment (with pressure side); 233-a second section; 24-a passive section; 241-a pressed section; 3-a first linkage member; 31-a pressing part; 311-first pressing position (pressing slope); 312-a second pressing position; 32-a penetration slot; 33-a slide block; 34-a void portion; 4-a second linkage; 41-a joint; 42-a grip portion; 5-a circuit board; 51-orbital projection; 6-wire rod; p-a receiving space; t-butt joint female seats; t 1-making a hole; t 2-guide block.

Detailed Description

The above objects of the invention, together with the structural and functional characteristics thereof, will be best understood from the following description of the preferred embodiment when read in connection with the accompanying drawings.

Please refer to fig. 1, which is a schematic view of the assembly of the latch linkage device of the connector of the present invention; fig. 2 is an exploded view of the latch linkage of the connector of the present invention; FIGS. 3A, 3B and 3C are schematic views of the housing and the first linking member in FIG. 2; FIGS. 4A and 4B are schematic sectional views A-A and B-B of FIG. 1, respectively;

FIG. 5 is a cross-sectional view of the buckle of FIG. 1; FIGS. 6A and 6B are schematic views of the trip of FIG. 1; fig. 7 is a schematic view of the buckle linkage device and the female docking seat of the connector of the present invention. As shown in the drawings, the present invention discloses a buckle linkage device 100 of a connector, which includes a connector 1, a buckle 2, and a linkage assembly. The latch linkage 100 of the connector can be mated with a mating female socket T having a latching hole T1 on the top surface (as shown in fig. 7) to form an electrical connection for transmitting signals.

The connector 1 includes an insulating housing 10, a circuit board 5 and wires 6. The housing 10 has a top wall 11, two sidewalls 12, a first end 13 and a second end 14; the two side walls 12 are respectively located on two opposite sides (e.g. left and right side walls) of the top wall 11 and are spaced from each other, the first end 13 and the second end 14 are respectively located on two opposite sides (e.g. front and rear sides) of the top wall 11 away from the two side walls 12, the upper surface of the top wall 11 is provided with an assembling portion 15 and an installing portion 16, the assembling portion 15 is located corresponding to and facing the first end 13, and the installing portion 16 is located adjacent to the second end 14. In this embodiment, the first end 13 is configured as a pair of interfaces (as shown in fig. 3A and 3B) for the female docking seat T to be inserted into for docking, the second end 14 is configured as a rear wall, and an insertion hole 141 is formed on a wall surface of the first end 13, so that the first end 13 (i.e. the docking interface) and the second end 14 (i.e. the rear wall having the insertion hole 141) are communicated, and further the top wall 1, the two side walls 12, the first end 13 and the second end 14 jointly enclose an accommodating space P (as shown in fig. 3A, 4A and 7), the accommodating space P respectively accommodates the circuit board 5 and the wire 6, and the front end portion of the female docking seat T can be accommodated in the accommodating space P and electrically connected to the circuit board 5 after docking the female docking seat T.

Specifically, the mounting portion 15 is provided with a mounting groove 151 and two slots 152 vertically communicating with the side ends of the mounting groove 151, wherein the mounting groove 151 is parallel to the first end 13, the free ends of the slots 152 are adjacent to the first end 13, and the mounting groove 151 is adjacent to the mounting portion 16. The center of the mounting portion 15 is provided with a downwardly extending coupling groove 153 in a direction away from the mounting portion 16, and the coupling groove 153 is adjacent to and communicates with the mounting groove 151.

Specifically, the mounting portion 16 has a receiving groove 161 recessed downward from the top wall 11, and a recessed surface 162, the recessed surface 162 is formed at the bottom of the receiving groove 161 and horizontally disposed opposite to the top wall 11, one end of the receiving groove 161 intersects and communicates with the mounting groove 151 of the mounting portion 15 and communicates with the bottom of the combining groove 153, and the other end of the receiving groove 161 communicates with the second end 14.

Furthermore, the two opposite sides of the recessed surface 162 of the mounting portion 16 away from the mounting groove 151 are respectively provided with a limiting groove 163, and the two limiting grooves 163 are recessed deeper than the recessed surface 162. Horizontal guide rails 164 are concavely disposed on two opposite sides of the accommodating groove 161, and the horizontal guide rails 164 are respectively adjacent to the limiting grooves 163 (as shown in fig. 3A).

Specifically, as shown in fig. 3A, 3B and 4A, the inner side wall surfaces of the two side walls 12 are provided with a horizontal rail 121, the horizontal rail 121 is adjacent to the first end 13 (i.e. the butt joint), a guide wall 122 is disposed between the inner side wall surfaces of the two side walls 12, the receiving space P is divided into two spaces by the guide wall 122, and the guide wall 122 is provided with a horizontal guide groove 123, so that the two spaces are communicated with each other through the guide groove 123. The circuit board 5 has a plurality of contacts (not shown) at both front and rear ends, the length of the left and right opposite sides of the circuit board 5 is at least smaller than the horizontal length of the guide slot 123, and the left and right opposite sides of the circuit board 5 are respectively provided with a rail protrusion 51 in a protruding manner, when the front end of the circuit board 5 passes through the guide slot 123, the rail protrusions 51 are limited and combined to the side wall adjacent to the guide slot 123 to form a positioning, so that the front end contact of the circuit board 5 is located in the receiving space P at the first end 13, the rear end contact of the circuit board 5 can be soldered and positioned with the wire 6 inserted through the insertion hole 141 of the second end 14 to form an electrical connection, thereby forming a connector (as shown in fig. 4A and 4B), and in addition, the first end 13 (i.e. the mating port) can be plugged into one end (as shown in fig. 7) of the mating female socket T to form an electrical connection between the circuit board 5 and the mating female socket T.

The locking member 2 has a main body 21, at least one extending portion 22 extending from a side end of the main body 21, two elastic portions 23 and a driven portion 24, wherein the elastic portions 23 and the driven portion 24 are respectively formed by the main body 21 turning and protruding downward in a direction away from the extending portion 22, the extending portion 22 and the main body 21 are horizontally arranged, a free end of the extending portion 22 has an upward protruding locking portion 221, and the locking portion 221 is used for locking with the locking hole T1 of the mating female socket T.

Specifically, the locking element 2 is disposed in the mounting groove 151 and the slot 152 of the mounting portion 15 by the main portion 21 and the extending portion 22, the elastic portion 23 and the driven portion 24 are disposed in the receiving groove 161 of the mounting portion 16, wherein the elastic portion 23 extends downward by a suitable length and is provided with a bending portion 231, the bending portion 231 is turned toward the recessed surface 162 to form an arc-shaped bending line, so that the elastic portion 23 forms a first section 232 and a second section 233 by the bending portion 231, the first section 232 is connected to the main portion 21 and extends downward along an oblique direction to connect the second section 233, the second section 233 extends parallel to the main portion 21, the second section 233 and the first section 232 form an oblique angle with each other and are respectively located at different horizontal heights from the main portion 21, and the second section 233 is limited in the limiting groove 163 of the recessed surface 162, so that the elastic portion 23 of the locking element 2 generates a downward elastic force when the first section 232 is pressed downward by the extending structure relationship of the first section 232 and the second section 233. The driven portion 24 is connected to the main body portion 21 and located between the elastic portions 23 and adjacent to the first segments 232, a pressed segment 241 (as shown in fig. 4A and 4B) is protruded from the driven portion 24, and the pressed segment 241 can be pressed downward to move the driven portion 24 downward. Therefore, when the elastic portion 23 and the driven portion 24 move downward, they link the main body 21, the extending portion 22 and the hooking portion 221 to elastically deflect downward by a certain distance.

The linkage assembly is combined above the mounting part 16 of the shell 10, so that the fastener 2 is positioned between the mounting part 16 and the linkage assembly. The linkage assembly includes a first linkage member 3 and a second linkage member 4, as shown in fig. 2 and 3C, wherein the first linkage member 3 is located above the elastic portion 23 and the driven portion 24 of the buckle member 2, the first linkage member 3 has a pressing portion 31, a penetrating slot 32, two sliding blocks 33 and a gap portion 34, the pressing portion 31 has two first pressing positions 311 located at the front lower edge of the first linkage member 3, and is designed to be inclined and set as a pressing slope, the second pressing position 312 is recessed between the first pressing positions 311, the penetrating slot 32 is adjacent to the pressing portion 31 and penetrates through the opposite top and bottom portions of the first linkage member 3, the two sliding blocks 33 are arranged by projecting outward from the opposite sides of the first linkage member 3 away from the pressing portion 31 and are located at a position at the rear side below the side of the first linkage member 3, and most importantly, the upper and lower thickness of the sliding block 33 is smaller than the upper and lower height of the horizontal guide rail 164 at the two sides of the receiving slot 161, and the bottom of the first linkage member 3 is designed to be inclined toward the front side (as a) and the front side is formed at a position at the front side of the gap portion 34. The second linking member 4 can be a drawstring, and has a connecting portion 41 and a holding portion 42 corresponding to and connected to the connecting portion 41, wherein the connecting portion 41 is used to connect the penetrating slot 32 of the first linking member 3, the combining slot 153 of the housing 10 and the accommodating recess 161 to the holding portion 42.

In practical implementation, with reference to fig. 4A, 4B and 5, the main body 21 and the extending portion 22 of the fastening element 2 are respectively disposed in the assembling groove 151 and the slot 152 of the assembling portion 15 of the housing 10, the hooking portion 221 protrudes upward out of the slot 152 and is higher than the top wall 11, the elastic portion 23 and the driven portion 24 are received in the receiving groove 161 of the mounting portion 16, and the second segment 233 abuts against the limiting groove 163 of the recessed surface 162, so that the elastic portion 23 has a downward elastic force, and the hooking portion 221 of the fastening element 2 protrudes upward (i.e., is higher than) above the top wall 11 of the housing 10. The first link 3 slides into the horizontal guide rails 164 on both sides of the receiving groove 161 through the two sliders 33, so as to be disposed in the receiving groove 161 of the mounting portion 16 of the housing 10 and located above the elastic portion 23 and the passive portion 24, such that the first pressing position (i.e., the pressing inclined surface) 311 of the pressing portion 31 corresponds to and is located above the first section 232 of the elastic portion 23, such that the first section 232 forms a pressing surface (not labeled with figure), the second pressing position 312 is located above the passive portion 24 and corresponds to the pressing section 241, the penetrating groove 32 is communicated with the receiving groove 161, the bottom of the first link 3 corresponds to the second sections 233 limited in the limiting groove 163, and the gap portion 34 corresponds to between the two second sections 232 of the two elastic portions 23 of the buckle 2, such that the top surface of the first link 3 protrudes out of the mounting portion 16. The second connecting member 4 passes through the space portion 34 of the first connecting member 3 and the two elastic portions 23 from the outside, passes through the combining groove 153 of the housing 10 from the bottom and passes through the main body portion 21 of the buckling member 2 from the top to pass through the passing groove 32 of the first connecting member 3, then passes through the combining groove 153 of the housing 10 from the bottom to pass through from the bottom, enters the accommodating groove 161 of the mounting portion 16 to form the connecting portion 41, and is connected with the holding portion 42, so that the holding portion 42 of the second connecting member 4 is close to the recessed surface 162 and extends properly toward the direction of the wire 6 (as shown in fig. 5).

Therefore, with reference to fig. 1, fig. 2, fig. 5, fig. 6A, fig. 6B and fig. 7, the structure design of the buckle linkage device of the connector of the present invention is matched, and the second linkage piece 4 is connected to the penetrating slot 32 of the first linkage piece 3 and the combining slot 153 of the housing 10 of the connector 1, and the first linkage piece 3 is combined to the mounting portion 16 of the connector 1, so that the buckle piece 2 is positioned between the mounting portion 16 and the linkage assembly through the combination relationship between the second segment 233 and the limiting slot 163. When the connector 1 uses the first end 13 (i.e. the docking port) of the housing 10 to allow the front end of the female docking station T to be inserted and docked, the female docking station T can correspond to the guide blocks T2 on the outer side walls and slide into the horizontal rails 121 on the two side walls 12, so that the front end of the female docking station T is precisely accommodated in the accommodating space P and electrically connected with the circuit board 5, and the upwardly protruding hooking portion 221 of the free end of the extension portion 22 is precisely and elastically buckled in the buckling hole T1 on the top surface of the female docking station T, thereby achieving the purpose of buckling. When the second linking member 4 is pulled by the holding portion 42 (close to the recessed surface 162) toward the wires 6, the linking portion 41 links the first linking member 3, and at this time, because the top surface of the first linking member 3 protrudes from the top wall 11 of the housing 10 (at a high position) and the holding portion 42 is close to the recessed surface 162 (at a low position), when the linking portion 41 pulls the front side of the first linking member 3 to move forward backward, the pressing portion 31 pushes the first section 232 (the pressed surface) of the elastic portion 23 and the pressed section 241 of the driven portion 24 downward respectively at the first pressing position (i.e. the pressing inclined surface) 311 and the second pressing position 312 to move downward (the movement is relative to the pressing space), so as to link the main body portion 21, the extending portion 22 and the hooking portion 221 to elastically deflect downward by a distance in the assembling groove 151 and the slot 152, thereby achieving the purpose of releasing. That is, the solution of releasing the locking ensures that the pressing portion 31 of the first linking member 3 precisely pushes the driven portion 24 downwards to drive the elastic member 23 to move downwards, and further the locking portion 221 of the extending portion 22 is linked to elastically move downwards by a distance and precisely disengage from the female socket T to achieve the locking state. Therefore, the reliability of the buckle and the release can be improved, the effect of facilitating the electrical connection of the buckle is achieved, and the buckle linkage device of the connector is easy to operate, firm in positioning, not easy to fall off and shake and has a reliable electrical contact effect.

The present invention has been described in detail, and the above description is only a preferred embodiment of the present invention, and should not be used to limit the scope of the present invention. All the equivalent changes and modifications made by the claims of the present invention should be covered by the scope of the present invention.

Claims

1. A buckle interlock of connector, comprising:

2. The snap linkage of a connector as claimed in claim 1, wherein: the center of the assembly part is provided with a downward through combination groove far away from the installation part, the combination groove is communicated with the installation part, and one end of the second linkage piece is connected with the combination groove.

3. The snap linkage of a connector as claimed in claim 1, wherein: the buckle piece is also provided with a driven part, the driven part is convexly extended from the main body part towards the direction far away from the extension part, and the two elastic parts are symmetrically formed and are formed by the main body part which is bent and convexly extended towards the direction far away from the extension part.

4. The snap linkage of a connector as claimed in claim 3, wherein: the elastic part of the fastener is provided with a bending part, and the bending part is bent to form a bending line with an arch angle shape towards the direction of the mounting part, so that the elastic part forms a first section and a second section extending from the first section, and is respectively at different horizontal heights with the main body part.

5. The snap linkage of a connector as claimed in claim 3, wherein: the installation part of the connector is provided with a containing groove for containing the convex elastic part and the driven part, the containing groove is formed with a concave surface horizontally opposite to the top wall, two opposite sides of the containing groove are concavely provided with guide rails, and the first linkage part is provided with a slide block corresponding to the guide rails.

6. The snap linkage of a connector as claimed in claim 4, wherein: the first section of the elastic part is connected with the main body part and extends downwards, the first section corresponds to a first pressing position of the pressing part, and the second section is connected with the first section and extends along the horizontal direction.

7. The snap linkage of a connector as claimed in claim 1, wherein: the assembling part is provided with a slot close to the first end and an assembling groove with a side end communicated with the slot, the extending part extends into the slot, and the hooking part extends from the direction far away from the main body part to be formed on the extending part and protrudes upwards from the top wall.

8. The snap linkage of a connector as claimed in claim 4, wherein: the driven part is adjacent to the first section, a pressed section is arranged at a second pressing position of the driven part relative to the pressing part, and the pressed section can be pushed by the second pressing position to enable the driven part to move.

9. The snap linkage of a connector as claimed in claim 5, wherein: the assembling part is provided with a combination groove which penetrates downwards, the first linkage part is provided with a penetrating groove, the penetrating groove penetrates through the relative top and bottom of the first linkage part and is communicated with the mounting part, and when the second linkage part penetrates through the first linkage part and the elastic part, penetrates through the combination groove and then turns back and penetrates through the penetrating groove and then turns back, and enters the accommodating groove of the mounting part to be connected to form a connecting part.

10. The snap linkage of a connector as claimed in claim 1, wherein: the inner side wall surfaces of the two side walls are provided with horizontal rails, two sides of the circuit board are oppositely provided with rail convex parts, the rail convex parts are combined with the horizontal rails to form positioning, one end of the circuit board is located at the first end, the first end can be used for oppositely inserting the butt joint female seat to form electric connection, and the other end of the circuit board is electrically connected with the wire.