Terminal block for inverter

Abstract

The utility model relates to a terminal block for an inverter, which comprises an insulating base and a bottom plate, four first compartments are arranged on the bottom plate along the length direction, a support plate is vertically arranged on the bottom surface of the bottom plate along the length direction, the support plate is arranged across the three first compartments in sequence, four second compartments are arranged on the support plate in parallel, and the four second compartments are positioned below the three first compartments; slotted holes are formed in the positions, close to the inner rear end of the first compartment, of the bottom plate between the first compartment and the second compartment which are vertically arranged; a mounting platform is convexly arranged on the bottom plate in the first compartment; the four first wiring screws are respectively arranged on the four first compartment mounting platforms; first to fourth conductive plates each including an upper wiring portion, a connecting portion, and a lower wiring portion; and the upper wiring parts of the first to fourth conductive plates are arranged in the four first compartments, and the lower wiring parts of the first to fourth conductive plates are arranged in the four second compartments, so that the lower wiring parts of the first to fourth conductive plates are positioned below the upper wiring parts of the first to third conductive plates, the volume of the lower part of the terminal table is further reduced, and the installation space is reduced.

Description

Technical Field

[0001] The utility model relates to an electric connector, in particular to a terminal block for an inverter. Background Art

[0002] Terminal blocks are accessories used to achieve electrical connections. In recent years, the proportion of renewable energy development and utilization in the entire energy structure will also increase. Solar cell power generation is given priority consideration in renewable energy planning.

[0003] The terminal blocks for inverters used for solar cell power generation have relatively high requirements for flame resistance and strength because the current and voltage are relatively large during use.

[0004] The existing inverter terminal block conductive terminals are provided with upper and lower four poles, which occupies a large installation space. Utility Model Content

[0005] The utility model aims to provide a terminal block for an inverter, which has a smaller installation space and better sealing performance than the existing terminal blocks and can meet the IP67 grade.

[0006] In order to achieve the above object, the technical solution of the utility model is:

[0007] A terminal block for an inverter, comprising:

[0008] The insulating base comprises a bottom plate, on which a plurality of longitudinal partitions are arranged in parallel and at intervals, four first compartments are formed in parallel and independently on the bottom plate along the length direction, and a rear end plate connected to the longitudinal partition is arranged at the rear end of the first compartment; a support plate is arranged vertically on the bottom surface of the bottom plate along the length direction, and the support plate is sequentially arranged across the three first compartments, and a plurality of partitions are arranged in parallel and at intervals on the support plate to form four second compartments, and each second compartment is provided with a fixing plate parallel to the support plate and with a mounting hole; the bottom plate between the first compartments and the second compartments arranged up and down is respectively provided with slots connecting the three first compartments with the four second compartments near the rear end of the first compartment; a mounting platform is convexly arranged on the bottom plate in the first compartment, and a blind hole is arranged at the center of the upper end surface of the mounting platform;

[0009] Four first connecting screws, the heads of which are respectively embedded in the blind holes on the four first compartment mounting platforms;

[0010] The first conductive plate comprises an upper connecting portion, a connecting portion formed by bending downward and extending from the rear end of the upper connecting portion, and a lower connecting portion formed by extending downward from the connecting portion; both the upper and lower connecting portions are provided with connecting holes; the upper connecting portion of the first conductive plate is arranged on a first connecting screw on a blind hole of a mounting platform of a first of four first compartments, and is locked by a washer and a nut; the lower connecting portion is inserted from the slot into a second compartment located at a first position among the four second compartments, and is locked on a fixing plate by a second connecting screw and a corresponding washer and nut;

[0011] The second conductive plate comprises an upper wiring portion, a connection portion formed by bending downward from the rear end of the upper wiring portion and extending to one side of the first conductive plate, and a lower wiring portion formed by extending downward from the connection portion, the lower wiring portion being located outside the upper wiring portion; both the upper and lower wiring portions are provided with connection holes; the wiring portion of the second conductive plate is provided with a first wiring screw on a blind hole of a mounting platform of a second first compartment of the four first compartments, and is locked by a washer and a nut; the lower wiring portion is inserted from the slot into a second compartment located at a second position among the four second compartments, and is locked on the fixing plate by a second wiring screw and a corresponding washer and nut;

[0012] The third conductive plate comprises an upper wiring portion, a connection portion formed by bending downward from the upper wiring portion close to the second conductive plate and then bending and extending toward the second conductive plate, and a lower wiring portion formed by extending downward from the connection portion, the lower wiring portion being located outside the upper wiring portion; both the upper and lower wiring portions are provided with connection holes; the wiring portion on the third conductive plate is provided with a first wiring screw on a blind hole of a mounting platform of a third first compartment of the four first compartments, and is locked by a washer and a nut; the lower wiring portion is inserted from the slot into a second compartment located at a third position among the four second compartments, and is locked on the fixing plate by a second wiring screw and a corresponding washer and nut; preferably, a notch is provided on one side of the connection portion of the second conductive plate for one side of the connection portion of the third conductive plate to extend into;

[0013] The fourth conductive plate comprises an upper wiring portion, a connection portion formed by bending downward from the rear end of the upper wiring portion and then extending toward the third conductive plate side, and a lower wiring portion formed by extending downward from the connection portion, wherein the lower wiring portion is located below the upper wiring portion of the third conductive plate; connection holes are provided on both the upper and lower wiring portions; the wiring portion of the fourth conductive plate is provided on the first wiring screw on the blind hole of the mounting platform of the fourth first compartment of the four first compartments, and is locked by a washer and a nut; the lower wiring portion is inserted from the slot into the second compartment located at the fourth position among the four second compartments, that is, located below the upper wiring portion of the third conductive plate, and is locked on the fixing plate by the second wiring screw and the corresponding washer and nut.

[0014] Preferably, among the four second compartments arranged sequentially, the two second compartments at the first and fourth positions are respectively located under the two first compartments at the first and third positions among the three first compartments.

[0015] Furthermore, it also includes a plurality of insulating spacers, which are respectively vertically arranged at the front end of the longitudinal partition of the first compartment of the insulating base.

[0016] Preferably, the bottom surface of the insulating base bottom plate is provided with an annular sealing groove and a waterproof sealing ring around the second compartment.

[0017] Preferably, the connecting parts of the first to fourth conductive plates are provided with reinforcing ribs.

[0018] Preferably, fixing holes are respectively arranged at the front and rear of the top surface of the bottom plate of the insulating base. Preferably, a fixing hole and a fixing sleeve are arranged in front of the mounting platform in the first compartment in the bottom plate and are sealed by an insulating plug.

[0019] Preferably, the bottom plate, longitudinal partition plate, rear end plate, support plate, partition plate and fixing plate of the insulating base are an integrated structure.

[0020] Preferably, a press-in nut is provided in the connection hole of the lower connection part of the first to fourth conductive plates. Preferably, the press-in nut is riveted and formed as one body with the first to fourth conductive plates. Correspondingly, the stud, corrugated washer and washer of the second connecting screw are designed as one body.

[0021] Furthermore, a protective cover is provided, which is arranged on the upper end of the insulating base. Preferably, the protective cover is made of transparent material.

[0022] Preferably, shaft holes are provided at the rear of the upper ends of both side surfaces of the insulating base, and correspondingly, short shafts are protruding at the rear of both side surfaces of the protective cover, thereby being pivotally connected to the insulating base.

[0023] Preferably, the screw rod of the first connecting screw is a stepped shaft structure, the upper diameter of which is smaller than the lower diameter, and a washer and a nut are respectively provided at the step and the lower part of the upper stepped shaft structure.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] The utility model provides upper and lower four-pole conductive terminals for the wiring unit, and the four-pole design at the lower part is within the three-pole space at the upper part, so that the overall volume of the terminal block is further reduced, thereby reducing the installation space.

[0026] The utility model discloses a waterproof sealing design at the bottom of the insulating base and an embedded molding of the conductive plate and the main body (insulating base), which meets the IP67 waterproof grade.

[0027] The conductive plate and wiring method of the utility model adopt an up-and-down vertical design, which has a wider range of application occasions and a smaller operating space, and is particularly suitable for through-the-wall terminal blocks.

[0028] The utility model realizes dust prevention and electric shock prevention by designing the protection cover.

[0029] The insulating spacer, insulating plug and protective cover of the utility model realize insulation and prevent electric shock.

[0030] The first connecting screw of the utility model adopts a two-stage stepped shaft design, the top end can be connected to the sun-tracking system, and the lower part is the output end, which can realize the sun-tracking function and meet the working requirements of the solar panel. At the same time, the installation space and use cost are greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The three-dimensional embodiment of the utility model Figure 1 ;

[0032] Figure 2 The three-dimensional embodiment of the utility model Figure 2 ;

[0033] Figure 3 The three-dimensional decomposition of the embodiment of the utility model Figure 1 ;

[0034] Figure 4 The three-dimensional decomposition of the embodiment of the utility model Figure 2 ;

[0035] Figure 5 It is a front view of an embodiment of the utility model (without the insulating spacer);

[0036] Figure 6 for Figure 5 Bottom view of

[0037] Figure 7 for Figure 6 AA section view;

[0038] Figure 8 A bottom view of the insulating spacer in the embodiment of the utility model;

[0039] Fig. 9 A top view of an insulating spacer in an embodiment of the utility model;

[0040] Fig.10 for Fig. 9 BB cross-sectional view;

[0041] Fig.11 A three-dimensional diagram of an insulating base in an embodiment of the utility model;

[0042] Fig.12 It is a three-dimensional diagram of the first to fourth conductive plates in the embodiment of the present utility model. DETAILED DESCRIPTION

[0043] See also Figures 1 to 12 The terminal block for the inverter of the utility model comprises:

[0044] The insulating base 1 comprises a bottom plate 11, on which a plurality of longitudinal partitions 12 are arranged in parallel and at intervals, four first compartments 101 are formed in parallel and independently on the bottom plate 11 along the length direction, and a rear end plate 13 connected to the longitudinal partition 12 is arranged at the rear end of the first compartment 101; a support plate 14 is vertically arranged on the bottom surface of the bottom plate 11 along the length direction, and the support plate 14 is sequentially arranged across the three first compartments 101, and a plurality of partitions 15 are arranged in parallel and at intervals on the support plate 14 to form four second compartments 102, and each second compartment 102 is provided with a fixing plate 16 parallel to the support plate 14 and with a mounting hole; the bottom plate 11 between the first compartment 101 and the second compartment 102 arranged up and down is respectively provided with slots 17 connecting the three first compartments with the four second compartments near the rear end of the first compartment 101; a mounting platform 1011 is convexly arranged on the bottom plate in the first compartment 101, and a blind hole 1012 is arranged in the center of the upper end surface of the mounting platform 1011;

[0045] Four first binding screws 2, the heads of the first binding screws 2 are respectively embedded in the blind holes 1012 on the mounting platforms 1011 of the four first compartments 101;

[0046] The first conductive plate 3 comprises an upper wiring portion 31 and a connecting portion 32 formed by bending downward and extending from the rear end of the upper wiring portion 31, and a lower wiring portion 33 formed by extending downward from the connecting portion 32, and both the upper and lower wiring portions 31 and 33 are provided with connecting holes; the upper wiring portion 31 of the first conductive plate 3 is arranged on the first wiring screw 2 on the blind hole 1012 of the mounting platform 1011 of the first first compartment 101 of the four first compartments 101, and is locked by the washer 21 and the nut 22; the lower wiring portion 33 is inserted from the slot 17 into the second compartment 102 located at the first position among the four second compartments 102, and is locked on the fixing plate 16 by the second wiring screw 7 and the corresponding washer and nut;

[0047] The second conductive plate 4 comprises an upper wiring portion 41, a connecting portion 42 bent downward from the rear end of the upper wiring portion 41 and extending to one side of the first conductive plate 3 to form a connecting portion, and a lower wiring portion 43 extending downward from the connecting portion 42, the lower wiring portion 43 being located outside the upper wiring portion 41; both the upper and lower wiring portions 41 and 43 are provided with connecting holes; the upper wiring portion 41 of the second conductive plate 4 is provided with a first connecting screw on a blind hole of a mounting platform of a second first compartment of the four first compartments 101, and is locked by a washer and a nut; the lower wiring portion 43 is inserted from the slot 17 into a second compartment 102 located at a second position among the four second compartments 102, and is locked on the fixing plate 16 by a second connecting screw 7 and a corresponding washer and nut;

[0048] The third conductive plate 5 comprises an upper wiring portion 51, a connection portion 52 formed by bending downward from the upper wiring portion 51 near the second conductive plate 4 side and then bending and extending toward the second conductive plate 4 side, and a lower wiring portion 53 formed by extending downward from the connection portion 52, and the lower wiring portion 53 is located outside the upper wiring portion 51; both the upper and lower wiring portions 51 and 53 are provided with connection holes; the upper wiring portion 51 of the third conductive plate 5 is provided with a first wiring screw on a blind hole of the mounting platform of the third first compartment of the four first compartments 101, and is locked by a washer and a nut; the lower wiring portion 53 is inserted from the slot 17 into the second compartment 102 located at the third position among the four second compartments 102, and is locked on the fixing plate 16 by the second wiring screw 7 and the corresponding washer and nut; preferably, a notch 421 is provided on one side of the connection portion 42 of the second conductive plate 4 for one side of the connection portion 52 of the third conductive plate 5 to extend into;

[0049] The fourth conductive plate 6 includes an upper wiring portion 61, a connection portion 62 formed by bending downward from the rear end of the upper wiring portion 61 and then extending toward the third conductive plate 5, and a lower wiring portion 63 formed by extending downward from the connection portion 62, wherein the lower wiring portion 663 is located below the upper wiring portion 51 of the third conductive plate 5; both the upper and lower wiring portions 61 and 63 are provided with connection holes; the upper wiring portion 61 of the fourth conductive plate 6 is provided with a first wiring screw on a blind hole of a mounting platform of a fourth first compartment of the four first compartments 101, and is locked by a washer and a nut; the lower wiring portion 63 is inserted from the slot 17 into the second compartment 102 located at the fourth position among the four second compartments 102, i.e., located below the upper wiring portion 51 of the third conductive plate 5, and is locked on the fixing plate 16 by a second wiring screw 7 and a corresponding washer and nut.

[0050] Preferably, among the four second compartments arranged sequentially, the two second compartments at the first and fourth positions are respectively located under the two first compartments at the first and third positions among the three first compartments.

[0051] Furthermore, it also includes a plurality of insulating spacers 9 which are vertically arranged at the front ends of the longitudinal partitions 12 of the first compartment 101 of the insulating base 1 .

[0052] Preferably, the bottom surface of the bottom plate 11 of the insulating base 1 is provided with an annular sealing groove 111 and a waterproof sealing ring 18 around the second compartment 102 .

[0053] Preferably, the connection parts of the first to fourth conductive plates 3 to 6 are provided with reinforcing ribs 34 , 44 , 54 , 64 .

[0054] Preferably, fixing holes are respectively provided on the front and rear of the top surface of the bottom plate 11 of the insulating base 1. Preferably, a fixing hole 19 and a fixing sleeve 191 are provided in front of the mounting platform 1011 in the first compartment 101 on the bottom plate and are sealed by an insulating plug 192.

[0055] Preferably, the bottom plate 11 , the longitudinal partition plate 12 , the rear end plate 13 , the support plate 14 , the partition plate 15 , and the fixing plate 16 of the insulating base 1 are an integrated structure.

[0056] Preferably, a press-in nut is provided in the connection hole of the lower connection part of the first to fourth conductive plates. Preferably, the press-in nut is riveted and formed as one body with the first to fourth conductive plates. Accordingly, the stud, corrugated washer and washer of the second connecting screw are designed as one body.

[0057] Furthermore, a protective cover is provided, which is arranged on the upper end of the insulating base.

[0058] Preferably, shaft holes are provided at the rear of the upper ends of both side surfaces of the insulating base, and correspondingly, short shafts are protruding at the rear of both side surfaces of the protective cover, thereby being pivotally connected to the insulating base.

[0059] Preferably, the protective cover is made of transparent material.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the preferred embodiments, a person skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A terminal block for an inverter, characterized in that: include, The insulating base comprises a bottom plate, on which a plurality of longitudinal partitions are arranged in parallel and at intervals, four first compartments are formed in parallel and independently on the bottom plate along the length direction, and a rear end plate connected to the longitudinal partition is arranged at the rear end of the first compartment; a support plate is arranged vertically on the bottom surface of the bottom plate along the length direction, and the support plate is arranged in sequence across the three first compartments, and a plurality of partitions are arranged in parallel and at intervals on the support plate to form four second compartments, and each second compartment is provided with a fixing plate parallel to the support plate and with a mounting hole; the bottom plate between the first compartments and the second compartments arranged up and down is respectively provided with slots connecting the three first compartments with the four second compartments near the rear end of the first compartment; a mounting platform is convexly arranged on the bottom plate in the first compartment, and a blind hole is arranged at the center of the upper end surface of the mounting platform; Four first connecting screws, the heads of which are respectively embedded in the blind holes on the four first compartment mounting platforms; The first conductive plate comprises an upper connecting portion, a connecting portion formed by bending downward and extending from the rear end of the upper connecting portion, and a lower connecting portion formed by extending downward from the connecting portion; both the upper and lower connecting portions are provided with connecting holes; the upper connecting portion of the first conductive plate is arranged on a first connecting screw on a blind hole of a mounting platform of a first of four first compartments, and is locked by a washer and a nut; the lower connecting portion is inserted from the slot into a second compartment located at a first position among the four second compartments, and is locked on a fixing plate by a second connecting screw and a corresponding washer and nut; The second conductive plate comprises an upper wiring portion, a connection portion formed by bending downward from the rear end of the upper wiring portion and extending to the first conductive plate side, and a lower wiring portion formed by extending downward from the connection portion, the lower wiring portion being located outside the upper wiring portion; both the upper and lower wiring portions are provided with connection holes; the wiring portion of the second conductive plate is provided with a first wiring screw on a blind hole of a mounting platform of a second first compartment of the four first compartments, and is locked by a washer and a nut; the lower wiring portion is inserted from the slot into a second compartment located at a second position among the four second compartments, and is locked on the fixing plate by a second wiring screw and a corresponding washer and nut; The third conductive plate comprises an upper wiring portion, a connection portion formed by bending downward from the upper wiring portion close to the second conductive plate and then bending and extending toward the second conductive plate, and a lower wiring portion formed by extending downward from the connection portion, the lower wiring portion being located outside the upper wiring portion; both the upper and lower wiring portions are provided with connection holes; the wiring portion on the third conductive plate is provided with a first wiring screw on a blind hole of a mounting platform of a third first compartment of the four first compartments, and is locked by a washer and a nut; the lower wiring portion is inserted from the slot into a second compartment located at a third position among the four second compartments, and is locked on the fixing plate by a second wiring screw and a corresponding washer and nut; The fourth conductive plate comprises an upper wiring portion, a connection portion formed by bending downward from the rear end of the upper wiring portion and then extending toward the third conductive plate side, and a lower wiring portion formed by extending downward from the connection portion, wherein the lower wiring portion is located below the upper wiring portion of the third conductive plate; connection holes are provided on both the upper and lower wiring portions; the wiring portion of the fourth conductive plate is provided on the first wiring screw on the blind hole of the mounting platform of the fourth first compartment of the four first compartments, and is locked by a washer and a nut; the lower wiring portion is inserted from the slot into the second compartment located at the fourth position among the four second compartments, that is, located below the upper wiring portion of the third conductive plate, and is locked on the fixing plate by the second wiring screw and the corresponding washer and nut.

2. The inverter terminal block according to claim 1, wherein: Among the four second compartments arranged in sequence, the two second compartments at the first and fourth positions are respectively located under the two first compartments at the first and third positions among the three first compartments.

3. The inverter terminal block according to claim 1, wherein: It also includes a plurality of insulating spacers, which are respectively vertically arranged at the front end of the longitudinal partition of the first compartment of the insulating base.

4. The inverter terminal block according to claim 1, wherein: The connection parts of the first to fourth conductive plates are provided with reinforcing ribs.

5. The inverter terminal block according to claim 1, wherein: The screw rod of the first connecting screw is a stepped shaft structure, the upper diameter of which is smaller than the lower diameter, and a washer and a nut are respectively provided at the step and the lower part of the upper stepped shaft structure.

6. The inverter terminal block according to claim 1 or 3, characterized in that: The bottom surface of the insulating base bottom plate is provided with an annular sealing groove and a waterproof sealing ring around the second compartment.

7. The inverter terminal block according to claim 1 or 3, characterized in that: The top surface of the bottom plate of the insulating base is respectively provided with fixing holes at the front and rear.

8. The inverter terminal block according to claim 6, wherein: The top surface of the bottom plate of the insulating base is respectively provided with fixing holes at the front and rear.

9. The inverter terminal block according to claim 1 or 3, characterized in that: A fixing hole and a fixing sleeve are arranged in front of the installation platform in the first compartment of the bottom plate and are sealed by an insulating plug.

10. The inverter terminal block according to claim 6, wherein: A fixing hole and a fixing sleeve are arranged in front of the installation platform in the first compartment of the bottom plate and are sealed by an insulating plug.

11. The inverter terminal block according to claim 1 or 3, characterized in that: The bottom plate, longitudinal partition plate, rear end plate, support plate, partition plate and fixing plate of the insulating base are an integrated structure.

12. The inverter terminal block according to claim 6, wherein: The bottom plate, longitudinal partition plate, rear end plate, support plate, partition plate and fixing plate of the insulating base are an integrated structure.

13. The inverter terminal block according to claim 7, wherein: The bottom plate, longitudinal partition plate, rear end plate, support plate, partition plate and fixing plate of the insulating base are an integrated structure.

14. The inverter terminal block according to claim 8, wherein: The bottom plate, longitudinal partition plate, rear end plate, support plate, partition plate and fixing plate of the insulating base are an integrated structure.

15. The inverter terminal block according to claim 9, wherein: The bottom plate, longitudinal partition plate, rear end plate, support plate, partition plate and fixing plate of the insulating base are an integrated structure.

16. The inverter terminal block according to claim 10, wherein: The bottom plate, longitudinal partition plate, rear end plate, support plate, partition plate and fixing plate of the insulating base are an integrated structure.

17. The inverter terminal block according to claim 1 or 4, characterized in that: A press-in nut is arranged in the connection hole of the lower connection part of the first to fourth conductive plates.

18. The inverter terminal block according to claim 17, wherein: The press-in nut is riveted and pressed into one piece with the first to fourth conductive plates, and correspondingly, the stud, corrugated washer and washer of the second connecting screw are designed as one piece.

19. The inverter terminal block according to claim 1, 2 or 3, characterized in that: A protective cover is also provided, which is arranged on the upper end of the insulating base.

20. The inverter terminal block according to claim 19, wherein: The protective cover is made of transparent material.

21. The inverter terminal block according to claim 1, wherein: A notch is provided on one side of the connecting portion of the second conductive plate for one side of the connecting portion of the third conductive plate to extend into.

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