CN219017954U - Binding post and relay module - Google Patents

Abstract

The utility model relates to the technical field of electric connectors, and a binding post and relay module are provided, wherein binding post includes mount pad and many pairs of conductive unit, the inside interval of mount pad is provided with a plurality of installation cavities, the opposite both sides of mount pad are provided with first socket and second socket respectively, first socket communicates in the one end of all installation cavities, the second socket communicates in the other end of all installation cavities, every pair of conductive unit corresponds to an installation cavity, the both ends of every pair of conductive unit all include the clamping part that is used for pegging graft with the external component, part clamping part exposes from first socket, another part clamping part exposes from second socket; the relay module comprises a wiring terminal and a relay, the relay comprises a circuit board, a base and an upper cover, and a third socket for inserting the wiring terminal is arranged between the upper cover and the base. The wiring terminal and the relay module have the advantages of simple structure, low production cost and good function expansibility.

Description

Binding post and relay module

Technical Field

The application belongs to the technical field of electric connectors, and more particularly relates to a wiring terminal and a relay module.

Background

The wiring terminal is an important component in the electrical industry, is widely applied to electrical connection of various products, and with the progress of technology, the requirements of mechanical automation degree and industrial control are higher and higher, and the requirements of the wiring terminal are gradually increased.

General binding post is including metal splicing and mount pad, and in metal splicing was fixed in the mount pad, in long-time use, if the installation of metal splicing and mount pad is unstable, will influence the electricity connection reliability of metal splicing to cause the outage in the twinkling of an eye and even the product disintegrates, consequently often need guarantee in binding post's design that the installation is firm between metal splicing and the mount pad.

For example: the utility model provides a chinese patent application number is CN202221624467.X discloses a binding post row, including insulating pedestal, grafting seat and conductive copper post, the front of grafting seat and the equal elastic connection in back have the location bullet piece, and each conductive copper post's lower extreme inserts respectively the inside of insulating pedestal, and can be via each the conductor with wiring lock bolt electrical connection, the upper end of conductive copper post is inlayed and is equipped with the marble locating pin, and the insulating pedestal is pegged graft in the ammeter under the dual connection of conductive copper post and grafting seat.

For the related art in the above, there are the following drawbacks:

for example, the wiring terminal with the design is characterized in that the insulating base body can be stably spliced with the ammeter only by being matched with the two components of the splicing base and the conductive copper column, the splicing base is additionally provided with the positioning spring block, the conductive copper column is additionally embedded with the marble positioning pin, the positioning spring block and the marble positioning pin are manufactured by independently opening the die for production, and only one end of the wiring terminal can be electrically connected with the outside and cannot be expanded to the two ends of the wiring terminal to be electrically connected with the outside, so that the structure of the common wiring terminal is relatively complex, the production cost is high, and the function expansibility is poor.

Disclosure of Invention

An object of the embodiment of the application is to provide a binding post and relay module to solve common binding post structure relatively more complicated, manufacturing cost is higher, the relatively poor technical problem of function expansibility.

In order to achieve the above object, according to a first aspect, the present application adopts the following technical scheme:

provided is a connection terminal including:

the mounting seat is internally provided with a plurality of mounting cavities at intervals, two opposite sides of the mounting seat are respectively provided with a first socket and a second socket, the first socket is communicated with one end of all the mounting cavities, and the second socket is communicated with the other end of all the mounting cavities; the method comprises the steps of,

and the two ends of each pair of conductive units are respectively provided with a clamping part used for being spliced with an external component, part of the clamping parts are exposed from the first socket, and the other part of the clamping parts are exposed from the second socket.

In an achievable technical scheme of the application, the conductive unit comprises a first metal clamping piece, a second metal clamping piece and a connecting piece, wherein the connecting piece is connected between the middle part of the first metal clamping piece and the middle part of the second metal clamping piece, and the first metal clamping piece and the second metal clamping piece are arranged at intervals.

In one technical scheme of the application, one end of the first metal clamping piece and/or one end of the second metal clamping piece are provided with protrusions which are arranged in opposite directions, and the other end of the first metal clamping piece and/or the other end of the second metal clamping piece are provided with protrusions which are arranged in opposite directions, and the protrusions are used for forming the clamping part.

In an achievable technical scheme of the application, the mount pad is including first panel and second panel, and the internal surface that first panel is close to the second panel is provided with first baffle, and the internal surface that the second panel is close to first panel is provided with the second baffle, and first baffle and second baffle one-to-one are arranged, and every is used for separating the space in the mount pad in order to form the installation cavity to first baffle and second baffle.

In an achievable technical scheme of the application, the mounting seat further comprises a third partition plate, the third partition plate is located between two adjacent first partition plates and/or two adjacent second partition plates, and one end, away from the second socket, of the third partition plate is used for being abutted against the connecting sheet.

In the technical scheme that this application can realize, the mount pad still is including the fourth baffle, and the fourth baffle is located one side or the both sides of installation cavity, and the one end of fourth baffle is provided with the stopper that is used for preventing that electrically conductive unit from breaking away from the installation cavity, is provided with the guide surface on the stopper.

In an achievable technical scheme of the application, the mounting seat further comprises a fifth baffle, the fifth baffle is located at one end of the first panel and/or the second panel, which is close to the second socket, and the fifth baffle is used for being abutted against the first metal clamping piece and the second metal clamping piece.

In an achievable technical scheme of the application, the mounting seat further comprises a sixth partition board and a seventh partition board, the sixth partition board is located at the first insertion opening and/or the second insertion opening, and the seventh partition board is located on the outer surface of the first panel and the outer surface of the second panel.

In order to achieve the above object, according to a second aspect, the present application adopts the following technical scheme:

there is provided a relay module including:

the wiring terminal and the relay.

The relay comprises a circuit board, a base and an upper cover, wherein the circuit board is arranged in the base, a third socket for inserting a wiring terminal is arranged between the upper cover and the base, a first clamping groove and a second clamping groove are respectively arranged on two opposite sides of the mounting seat, a pair of first clamping grooves are respectively communicated with two sides of the first socket and are used for being inserted into the circuit board, and a pair of second clamping grooves are respectively communicated with two sides of the second socket and are used for being connected with an external component.

In the technical scheme that this application can realize, the circuit board includes a plurality of golden fingers and spacing draw-in groove, and the golden finger exposes from third socket department and corresponds with conductive unit one-to-one, spacing draw-in groove and sixth baffle joint, third socket and seventh baffle butt.

In summary, the present application at least includes the following beneficial technical effects:

in the binding post of this application, adopt mount pad and conductive unit both mutually supporting, through set up multiunit baffle in the mount pad and keep out in conductive unit's both sides or tip, make mutual spacing between the adjacent conductive unit, firm installation between conductive unit and the mount pad, good insulation and fixed action have been played, conductive unit both ends all can be connected with outside electricity, good function expansibility has, install for binding post sets up the bayonet socket and conductive copper post among the prior art, and only one end can be connected with the external world, the structure of the binding post of this application is simpler, can reach good firm installation effect, the material that binding post adopted is less, low in production cost, function expansibility is better.

In the relay module of this application, through setting up binding post and relay, binding post's one end can be connected with the relay is firm, and binding post's the other end can insert the electric energy meter of different models according to actual need conveniently, and relay module plug and play, the installation is convenient with the dismantlement, and the convenience is strong.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a connection terminal according to an embodiment of the present application.

FIG. 2 is a cross-sectional view of the assembly relationship between the metal tab and the base in an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a relay module according to an embodiment of the present application.

Fig. 4 is an exploded view of a relay module according to an embodiment of the present application.

Wherein, each reference sign in the figure:

100. a connection terminal;

11. a mounting base; 101. a first panel; 102. a second panel; 111. a first separator; 112. a second separator; 113. a third separator; 114. a fourth separator; 1141. a limiting block; 115. a fifth separator; 116. a sixth separator; 117. a seventh separator;

12. a conductive unit; 120. a clamping part; 1201. a protrusion; 121. a first metal clip; 122. a second metal clip; 123. a connecting sheet;

200. a relay;

21. a circuit board; 211. a golden finger; 212. a limit clamping groove; 22. a base; 23. and (5) an upper cover.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1 to 4, a description will be given of a connection terminal and a relay module provided in an embodiment of the present application.

Referring to fig. 1 and 2, an embodiment of the present application provides a connection terminal, which includes a mounting base 11 and a plurality of pairs of conductive units 12.

The inside interval of mount pad 11 is provided with a plurality of installation cavities, and the relative both sides of mount pad 11 are provided with first socket and second socket respectively, and first socket communicates in the one end in all installation cavities, and the second socket communicates in the other end in all installation cavities, and every pair of conductive unit 12 corresponds an installation cavity, and the both ends of every pair of conductive unit 12 all include the clamping part 120 that is used for pegging graft with the external component, and partial clamping part 120 exposes from first socket, and another part clamping part 120 exposes from second socket.

In the binding post of this application, through arranging conductive unit 12 in a plurality of installation cavities that the interval set up in the mount pad 11, separate each other between the adjacent conductive unit 12, firm installation between conductive unit 12 and the mount pad 11 has good insulativity and installation stability, and conductive unit 12 both ends all can be connected with outside electricity, have good function expansibility.

In this embodiment, the mounting base 11 is an insulating plastic part, eight mounting cavities are arranged in the mounting base 11 at intervals, eight pairs of conductive units 12 are arranged in one-to-one correspondence with the mounting cavities, and the clamping parts 120 at two ends of the conductive units 12 can be electrically connected with an external structure, so that the connection terminal has good function expansibility.

In one embodiment, the conductive unit 12 includes a first metal clip 121, a second metal clip 122 and a connecting piece 123, two ends of the connecting piece 123 are respectively connected to a middle side surface of the first metal clip 121 and a middle side surface of the second metal clip 122, the first metal clip 121 and the second metal clip 122 are arranged at intervals, in this embodiment, the conductive unit 12 may be a single component formed integrally, in other embodiments, the first metal clip 121, the second metal clip 122 and the connecting piece 123 may also be separately manufactured, two ends of the connecting piece 123 are respectively welded with the middle part of the first metal clip 121 and the middle part of the second metal clip 122, and the conductive unit 12 is designed to facilitate production and manufacturing, thereby improving production efficiency.

Specifically, in the present embodiment, the protrusions 1201 disposed in opposite directions are provided on one end of the first metal clip 121 and one end of the second metal clip 122, the protrusions 1201 disposed in opposite directions are provided on the other end of the first metal clip 121 and the other end of the second metal clip 122, and the protrusions 1201 are used to form the clamping portion 120, it is to be understood that in other embodiments, the protrusions 1201 may be disposed only at both ends of the first metal clip 121 or both ends of the second metal clip 122, or the protrusions 1201 may be disposed at one end of the first metal clip 121, the protrusions 1201 may be disposed at one end of the second metal clip 122 opposite to the other end of the first metal clip 121, the clamping portion 120 may function to clamp an external member, and the clamping portion 120 may increase the clamping elasticity between the conductive unit 12 and the external member, thereby improving the stability of the electrical connection of the connection terminal.

In one embodiment, the mounting seat 11 includes a first panel 101 and a second panel 102 parallel to each other, a first socket is formed between the front end of the first panel 101 and the front end of the second panel 102, a second socket is formed between the rear end of the first panel 101 and the rear end of the second panel 102, a plurality of first partitions 111 are disposed on the inner surface of the first panel 101 near the second panel 102, a plurality of second partitions 112 are disposed on the inner surface of the second panel 102 near the first panel 101, the first partitions 111 and the second partitions 112 are arranged in a one-to-one correspondence manner, a gap is left between opposite surfaces of each pair of first partitions 111 and second partitions 112, a plane of each pair of first partitions 111 and second partitions 112 is perpendicular to a plane of the first panel 101, and each pair of first partitions 111 and second partitions 112 are used for separating a space in the mounting seat 11 to form a mounting cavity, so that two adjacent conductive units 12 are isolated from each other, and touching between two adjacent conductive units 12 is difficult to occur to improve insulation, thereby playing a role of prolonging the service life of the terminal.

In one embodiment, the mounting seat 11 further includes a third partition 113, the length direction of the third partition 113 is parallel to the length direction of the first partition 111, the third partition 113 is provided with a plurality of third partitions 113, each third partition 113 is located between two adjacent first partitions 111 and two adjacent second partitions 112, it is understood that in other embodiments, the third partition 113 is only disposed between two adjacent first partitions 111 or two adjacent second partitions 112, one end of the third partition 113 away from the second socket abuts against one side of the connecting piece 123 facing the second socket, the movement of the conductive unit 12 in the direction approaching the second socket can be limited, and in the same mounting cavity, the distance between the third partition 113 and the adjacent first partition 111 or the second partition 112 is matched with the width of the first metal clip 121 or the second metal clip 122, so that the movement of the conductive unit 12 along the width direction of the first metal clip 121 can be limited, thereby the mounting between the conductive unit 12 and the mounting seat 11 is more firm, and the assembling stability of the terminal is improved.

In an embodiment, the mounting seat 11 further includes a fourth partition 114, the length direction of the fourth partition 114 is parallel to the length direction of the first partition 111, the fourth partition 114 is provided with a plurality of partitions 114, the fourth partition 114 is located at one side or two sides of the mounting cavity, one end of the fourth partition 114 is provided with a limiting block 1141, the limiting block 1141 is abutted to one side of the connecting piece 123 towards the first socket, the limiting block 1141 is used for preventing the conductive unit 12 from moving towards the first direction, and a guiding surface is provided on the limiting block 1141, so that the surface area of the abutting side of the limiting block 1141 and the connecting piece 123 is not smaller than the surface area of the side of the limiting block 1141 away from the connecting piece 123, the conductive unit 12 is convenient to assemble into the mounting cavity from the first socket, and meanwhile, the conductive unit 12 is limited to be separated from the mounting cavity, and the mounting convenience and stability of the wiring terminal are improved.

In one embodiment, the mounting seat 11 further includes a fifth partition 115, the length direction of the fifth partition 115 is perpendicular to the length direction of the first partition 111, the fifth partition 115 is provided with a plurality of partitions, the fifth partition 115 is respectively disposed at one ends of the first panel 101 and the second panel 102 adjacent to the second socket, the fifth partition 115 is respectively abutted against the first metal clamping piece 121 and the second metal clamping piece 122, and it is understood that in other embodiments, the fifth partition 115 is only disposed at one end of the first panel 101 or the second panel 102 adjacent to the second socket, and the fifth partition 115 can limit the conductive unit 12 from extending out of the mounting seat 11 from the second socket during assembly or use, thereby further improving the stability of the terminal in use.

In one embodiment, the mounting seat 11 further includes a sixth partition 116, the length direction of the sixth partition 116 is parallel to the length direction of the first partition 111, the sixth partition 116 is provided with a plurality of sixth partitions 116, the sixth partition 116 is arranged between the inner surface of the first panel 101 and the inner surface of the second panel 102 in a penetrating manner, in this embodiment, the sixth partition 116 is located at the first socket and the second socket respectively, in other embodiments, the sixth partition 116 is only located at the first socket or the second socket, the sixth partition 116 may be arranged in parallel to the first partition 111, the sixth partition 116 may be arranged in a superposed manner with the first partition 111 and is formed after the gap between the first partition 111 and the second partition 112 is filled and penetrated, and the sixth partition 116 is used for being clamped with an external member, so as to limit the movement of the mounting seat 11 along the length direction perpendicular to the first partition 111.

In one embodiment, the mounting seat 11 further includes a seventh partition 117, the length direction of the seventh partition 117 is perpendicular to the length direction of the first partition 111, two seventh partitions 117 are provided, the seventh partition 117 is located on the outer surface of the first panel 101 and the outer surface of the second panel 102, and the seventh partition 117 is used for abutting against an external member, so that the movement of the mounting seat 11 in a direction away from the first socket can be limited.

The binding post assembly process of this application is as follows:

when the binding post is assembled, the side of the conductive unit 12 provided with the connecting sheet 123 is aligned with the side of the installation cavity provided with the third partition board 113, the conductive unit 12 is put into the installation cavity from the first socket and pushed in the direction of the second socket until one end of the first metal clamping sheet 121 or the second metal clamping sheet 122 facing the second socket is abutted against the fifth partition board 115, meanwhile, the two side surfaces of the connecting sheet 123 are respectively clamped between the end part of the third partition board 113 and the end part of the fourth partition board 114, the operation is repeated in the same way, and all the conductive units 12 are assembled in the installation cavity.

The beneficial technical effects of the binding post of this application are as follows:

in the binding post of this application, adopt mount pad 11 and conductive unit 12 both to mutually support, through set up a plurality of baffles in mount pad 11 and keep out in conductive unit 12 both sides or tip, make mutual interval between the adjacent conductive unit 12, firm installation between conductive unit 12 and the mount pad 11, good insulation and fixed action have been played, conductive unit 12 both ends all can be connected with outside electricity, good function expansibility has, set up the bayonet socket and install with conductive copper post for binding post among the prior art, and only one end can be connected with the external world, the structure of the binding post of this application is simpler, can reach good firm installation effect, the material that binding post adopted is less, low in production cost, the function is better.

Referring to fig. 3 and 4, the embodiment of the present application further provides a relay module, including the above-mentioned terminal 100 and relay 200, the relay 200 includes a circuit board 21, a base 22 and an upper cover 23, an electrical component is disposed on the circuit board 21, the circuit board 21 is installed in the base 22, the upper cover 23 is mounted in a clamping manner with the base 22 and is fixedly connected with the base 22 by a bolt, a third socket for inserting the terminal 100 is disposed between a side surface of the upper cover 23 and a side surface of the base 22, one end of the terminal 100 is electrically connected with the circuit board 21 through the third socket, a first clamping groove and a second clamping groove are disposed on two opposite sides of the mounting seat 11 relative to the first socket and the second socket, respectively, a pair of first clamping grooves are respectively communicated with two sides of the first socket and are used for plugging with the circuit board 21, a pair of second clamping grooves are respectively communicated with two sides of the second socket and are used for being connected with external components, and by setting the first clamping grooves and the second clamping grooves, so that the mounting seat 11 can be adapted to plugging of the circuit board 21 and external components of various sizes, thereby the relay module has good applicability and expansibility.

In one embodiment, the circuit board 21 includes a plurality of golden fingers 211 and a limiting slot 212, the golden fingers 211 are exposed from the third socket and are in one-to-one correspondence with the conductive units 12, the limiting slot 212 is clamped with the sixth partition 116 to limit the movement of the connecting terminal 100 along the width direction of the circuit board 21, and the upper cover 23 is clamped with the base 22 after the connecting terminal 100 is inserted into the circuit board 21, so that the seventh partition 117 can be abutted against the inner side of the third socket close to the relay 200 to limit the connecting terminal 100 from being pulled out from the third socket, so that the connecting terminal 100 and the relay 200 are assembled more firmly, and the installation stability of the relay module of the application is improved.

The beneficial technical effects of the relay module are as follows:

in the relay module of this application, through setting up binding post 100 and relay 200, the one end of binding post 100 can be connected with relay 200 firmly, and the other end of binding post 100 can be according to the electric energy meter of actual need conveniently access different models, and relay module plug and play, the installation is convenient with the dismantlement, and the convenience is strong.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims (10)

1. A terminal block, comprising:

the mounting seat (11), a plurality of mounting cavities are formed in the mounting seat (11) at intervals, a first socket and a second socket are respectively formed in two opposite sides of the mounting seat (11), the first socket is communicated with one ends of all the mounting cavities, and the second socket is communicated with the other ends of all the mounting cavities; the method comprises the steps of,

and a plurality of pairs of conductive units (12), wherein each pair of conductive units (12) corresponds to one mounting cavity, two ends of each pair of conductive units (12) comprise clamping parts (120) for being spliced with an external component, part of the clamping parts (120) are exposed from the first socket, and the other part of the clamping parts (120) are exposed from the second socket.

2. The terminal as defined in claim 1, wherein: the conductive unit (12) comprises a first metal clamping piece (121), a second metal clamping piece (122) and a connecting piece (123), wherein the connecting piece (123) is connected between the middle part of the first metal clamping piece (121) and the middle part of the second metal clamping piece (122), and the first metal clamping piece (121) and the second metal clamping piece (122) are arranged at intervals.

3. The terminal as defined in claim 2, wherein: protrusions (1201) which are arranged in opposite directions are arranged on one end of the first metal clamping piece (121) and/or one end of the second metal clamping piece (122), protrusions (1201) which are arranged in opposite directions are arranged on the other end of the first metal clamping piece (121) and/or the other end of the second metal clamping piece (122), and the protrusions (1201) are used for forming the clamping part (120).

4. The terminal as defined in claim 2, wherein: the mounting seat (11) comprises a first panel (101) and a second panel (102), wherein the first panel (101) is close to the inner surface of the second panel (102) and is provided with a first partition board (111), the second panel (102) is close to the inner surface of the first panel (101) and is provided with a second partition board (112), the first partition board (111) and the second partition board (112) are arranged in a one-to-one correspondence mode, and each pair of the first partition board (111) and the second partition board (112) are used for separating the space in the mounting seat (11) to form a mounting cavity.

5. The terminal as defined in claim 4, wherein: the mounting seat (11) further comprises a third partition board (113), the third partition board (113) is located between two adjacent first partition boards (111) and/or between two adjacent second partition boards (112), and one end, away from the second socket, of the third partition board (113) is used for being abutted against the connecting sheet (123).

6. The terminal as defined in claim 4, wherein: the mounting seat (11) further comprises a fourth partition plate (114), the fourth partition plate (114) is located on one side or two sides of the mounting cavity, one end of the fourth partition plate (114) is provided with a limiting block (1141) used for preventing the conductive unit (12) from being separated from the mounting cavity, and the limiting block (1141) is provided with a guide surface.

7. The terminal as defined in claim 4, wherein: the mounting seat (11) further comprises a fifth partition plate (115), the fifth partition plate (115) is located at one end of the first panel (101) and/or the second panel (102) close to the second socket, and the fifth partition plate (115) is used for abutting against the first metal clamping piece (121) and the second metal clamping piece (122).

8. The terminal as defined in claim 4, wherein: the mounting seat (11) further comprises a sixth partition plate (116) and a seventh partition plate (117), the sixth partition plate (116) is located at the first insertion opening and/or the second insertion opening, and the seventh partition plate (117) is located on the outer surface of the first panel (101) and the outer surface of the second panel (102).

9. A relay module, comprising: the wiring terminal (100) and the relay (200) according to claim 8, wherein the relay (200) comprises a circuit board (21), a base (22) and an upper cover (23), the circuit board (21) is installed in the base (22), a third socket for inserting the wiring terminal (100) is arranged between the upper cover (23) and the base (22), a first clamping groove and a second clamping groove are respectively arranged on two opposite sides of the installation seat (11), a pair of first clamping grooves are respectively communicated with two sides of the first socket and are used for being inserted into the circuit board (21), and a pair of second clamping grooves are respectively communicated with two sides of the second socket and are used for being connected with an external component.

10. The relay module of claim 9, wherein: the circuit board (21) comprises a plurality of golden fingers (211) and limiting clamping grooves (212), the golden fingers (211) are exposed from the third inserting opening and correspond to the conducting units (12) one by one, the limiting clamping grooves (212) are clamped with the sixth partition board (116), and the third inserting opening is abutted with the seventh partition board (117).

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