Contactor insulating plate mounting structure

Abstract

The utility model relates to a contactor insulating plate mounting structure, which comprises a base, a circuit board, an insulating plate and a framework assembly, a containing groove is formed at the upper end of the base, the insulating plate covers the containing groove so that a containing cavity is formed between the containing groove and the insulating plate, and the circuit board is fixedly mounted in the containing cavity; first clamping grooves are formed in the end edges of the two sides of the upper end of the containing groove, and clamping strips connected with the first clamping grooves in a clamped mode are formed on the insulating plate. A clamping block adjacent to the first clamping groove is formed on the accommodating groove, and a second clamping groove matched with the clamping block is formed on the insulating plate; and the framework assembly is pressed at the upper end of the insulating plate. According to the scheme, the insulating plate is fixedly covered on the base through the cover plate to form the protective layer, the relatively closed accommodating cavity is formed between the base and the insulating plate, the circuit board is positioned in the accommodating cavity, and when leakage current exists, the insulating plate can effectively isolate the influence of external metal creepage on the circuit board, so that the circuit board is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of contactors, in particular to an installation structure of a contactor insulating plate. Background Art

[0002] In the existing contactor, the circuit board is usually fixed on the edge of the coil enameled wire and both sides of the armature. When the contactor works, if the current of the low-voltage end and the high-voltage end is too large and there is leakage current, the current will climb to the circuit board through the metal parts, causing the circuit board to lose its function and completely fail to work. Summary of the Invention

[0003] In order to solve the above problems, the purpose of the utility model is to provide an installation structure of a contactor insulating plate, in which the circuit board is installed in the cavity between the insulating plate and the base, and the insulating plate is fixed and covered on the cavity in the form of a cover plate to form a protective layer. When the contactor works, if there is leakage current, the insulating plate can effectively isolate the influence of external metal creepage on the circuit board (the external current creepage causes the circuit board to break down and fail), and protect the circuit board.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An installation structure of a contactor insulating plate, characterized in that: it includes a base, a circuit board, an insulating plate and a skeleton assembly. Among them, a receiving groove is formed at the upper end of the base, and the insulating plate is covered on the receiving groove so that a receiving cavity is formed between the receiving groove and the insulating plate, and the circuit board is fixedly installed in the receiving cavity; first card slots are constructed on both sides of the upper end of the receiving groove along the edge, and card strips are formed on the insulating plate and are clamped with the first card slots; a clamping block is formed on the receiving groove adjacent to the first card slot, and a second card slot adapted to the clamping block is formed on the insulating plate; the skeleton assembly is press-fitted on the upper end of the insulating plate.

[0006] Preferably, an assembly frame is constructed on the bottom surface of the insulating plate, the circuit board is adaptively arranged in the assembly frame, at least two inserting blocks extend downward from the bottom surface of the insulating plate, and at least two inserting holes are formed on the circuit board and are inserted and matched with the inserting blocks.

[0007] Preferably, at least two supporting platforms corresponding to the inserting blocks are arranged at the bottom of the receiving groove, supporting grooves are formed on the supporting platforms, and the lower parts of the inserting blocks are abutted in the supporting grooves.

[0008] Preferably, a plurality of first reinforcing ribs are constructed on the bottom surface of the receiving groove, and both sides of the first reinforcing ribs extend to the side walls of the receiving groove; some of the ribs extending to the side walls of the receiving groove are configured as supporting ribs, and the lower end of the assembly frame and the lower end of the wide side of the insulating plate near the card strip are lapped on the supporting ribs.

[0009] Preferably, the wide side of the insulating plate near the second card slot overlaps on the upper edge of the receiving groove.

[0010] Preferably, an extension groove for adapting to the protruding part of the circuit board is formed by outward extension of the wide side of the insulating plate near the second card slot, and a support block is arranged in the extension groove to support the lower end of the insulating plate.

[0011] Preferably, a plurality of grounding pieces are integrated on the insulating plate, a plurality of positioning holes are formed on the protruding part of the circuit board, and the lower end of the grounding piece extends downward through the positioning hole to form a plug connection with the circuit board.

[0012] Preferably, a plurality of second reinforcing ribs are arranged on the upper end surface of the insulating plate.

[0013] Preferably, a docking hole is formed on the insulating plate. The skeleton assembly includes a coil skeleton and a U-shaped yoke pressed between the coil skeleton and the insulating plate. The lower end of the coil skeleton extends downward through the U-shaped yoke to form a clamping block embedded in the docking hole.

[0014] Adopting the above technical solution, the circuit board of the present utility model is installed in the cavity between the insulating plate and the base. The insulating plate is fixed and covered on the cavity in the form of a cover plate to form a protective layer, and the skeleton assembly is pressed above the insulating plate for limiting. This solution has the following beneficial effects:

[0015] 1. A receiving cavity is formed between the base and the insulating plate, and the circuit board is positioned in the receiving cavity. The insulating plate is fixed and covered on the cavity in the form of a cover plate to form a protective layer. When there is leakage current, it can effectively isolate the influence of external metal creepage on the circuit board.

[0016] 2. The base and the insulating plate are clamped by a double card slot method, which is convenient for assembly.

[0017] 3. The circuit board is positioned in the assembly frame of the insulating plate, which can improve the stability of the circuit board and prevent the lateral movement of the circuit board when the contactor works.

[0018] 4. Support blocks, support ribs and support platforms are arranged on the base, which can greatly improve the support strength for the insulating plate and improve the stability of the insulating plate.

[0019] 5. The upper end of the insulating plate is pressed by the cooperation of the clamping block and the docking hole, effectively preventing the insulating plate from shaking.

[0020] 6. The circuit board is matched with external inserts through positioning holes, further improving the assembly stability of the circuit board. Description of the Drawings

[0021] Figure 1 It is an assembly schematic diagram among the base, the insulating plate and the circuit board.

[0022] Figure 2 It is a three-dimensional structure schematic diagram of the insulating board.

[0023] Figure 3 It is a three-dimensional structure schematic diagram of another perspective of the insulating board.

[0024] Figure 4 It is a three-dimensional structure schematic diagram of the base.

[0025] Figure 5 It is a three-dimensional structure schematic diagram of another perspective of the base.

[0026] Figure 6 It is an assembly schematic diagram of the insulating board and the circuit board.

[0027] Figure 7 It is an assembly schematic diagram of another perspective of the insulating board and the circuit board.

[0028] Figure 8 It is a three-dimensional structure schematic diagram of the circuit board.

[0029] Figure 9 It is an assembly schematic diagram among the skeleton assembly, the insulating board and the base.

[0030] Figure 10 It is an arrangement schematic diagram of the clamping blocks. Specific embodiments

[0031] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more, unless otherwise clearly defined.

[0034] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "joined", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model may be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0036] As Figures 1 to 10 shown, a mounting structure of a contactor insulating plate includes a base 1, a circuit board 2, an insulating plate 3 and a skeleton assembly. Among them, a receiving groove 4 is formed at the upper end of the base 1, and the insulating plate 3 covers the receiving groove 4 so as to form a receiving cavity between the receiving groove 4 and the insulating plate 3; the circuit board 2 is fixedly mounted in the receiving cavity; first card slots 5 are constructed on both sides of the upper end of the receiving groove 4 at the edge, and card strips 6 adapted to be engaged with the first card slots 5 are formed on the insulating plate 3; a clamping block 7 is formed adjacent to the first card slot 5 on the receiving groove 4, and a second card slot 8 adapted to the clamping block 7 is formed on the insulating plate 3; the skeleton assembly is press-fitted on the upper end of the insulating plate 3.

[0037] In the above technical solution, the insulating board is fixedly covered on the base in the form of a cover plate, and a relatively sealed accommodating cavity is formed between the base and the insulating board. The circuit board is positioned in the accommodating cavity. When there is leakage current, the insulating board can effectively isolate the influence of external metal creepage on the circuit board, thereby protecting the circuit board. Specifically, the insulating board and the base are limited in position by a double-card slot, which can effectively prevent the insulating board from moving left and right and downward relative to the base, and the assembly is also very convenient. In addition, the upper end of the insulating board is pressed by the skeleton assembly, which can effectively prevent the insulating board from moving upward, so that the whole insulating board is stably covered on the upper end of the accommodating cavity, playing a good role in isolating the creepage phenomenon.

[0038] Further, an assembly frame 9 is constructed on the bottom surface of the insulating board 3, the circuit board 2 is adaptively arranged in the assembly frame 9, at least two insertion blocks 10 are downwardly extended from the bottom surface of the insulating board 3, and at least two insertion holes 11 are formed on the circuit board 2 and are in plug-in fit with the insertion blocks 10. In this technical solution, the circuit board and the insulating board are plugged and fixed by the cooperation of the insertion blocks and the insertion holes, which can effectively prevent the circuit board from falling off longitudinally. Moreover, the circuit board is adaptively installed in the assembly frame on the bottom surface of the insulating board, which can effectively prevent the lateral displacement of the circuit board.

[0039] Further, at least two support platforms 12 corresponding to the insertion blocks 10 are provided at the bottom of the accommodating groove 4, support grooves 13 are formed on the support platforms 12, and the lower part of the insertion block 10 abuts against the support grooves 13. In this technical solution, the setting of the support platform can improve the structural strength of the base. At the same time, the insertion block abuts against the support groove, playing a good supporting role for the insulating board and improving the stability of the insulating board.

[0040] Further, a plurality of first reinforcing ribs 14 are constructed on the bottom surface of the accommodating groove 4, and both sides of the first reinforcing ribs 14 extend to the side walls of the accommodating groove 4; some of the rib strips extending to the side walls of the accommodating groove 4 are configured as support ribs 15, and the lower end of the assembly frame 9 and the lower end of the wide side of the insulating board 3 close to the card strip 6 are lapped on the support ribs 15. In this technical solution, the first reinforcing ribs can improve the structural strength of the base, and some of the constructed support ribs can play a supporting role for the insulating board, further improving the stability of the insulating board.

[0041] Further, the wide side of the insulating board 3 close to the second card slot 8 is lapped on the upper end edge of the accommodating groove 4. In this technical solution, the lower edge of the part of the insulating board close to the second card slot is lapped on the edge of the base, which can further play a supporting role for the insulating board.

[0042] Further, on the wide side of the insulating plate 3 near the second card slot 8, an extension groove 17 is formed extending outward to fit the protruding part of the circuit board 2. A support block 18 is provided in the extension groove 17 to support the lower end of the insulating plate 3. In this technical solution, the support block further improves the support effect on the circuit board, making the setting of the insulating plate more stable.

[0043] Further, a number of grounding strips 19 are integrated on the insulating plate 3. A number of positioning holes 20 are formed in the protruding part of the circuit board 2. The lower end of the grounding strip 19 extends downward through the positioning hole 20 to form a plug connection with the circuit board 2. In this technical solution, the grounding strip is plugged into the circuit board, improving the assembly stability of the circuit board in the accommodation cavity and making it not easy to fall off.

[0044] Further, a number of second reinforcing ribs 21 are provided on the upper end surface of the insulating plate 3. In this technical solution, the second reinforcing ribs improve the structural strength of the insulating plate, thereby increasing the service life of the insulating plate and covering the base more stably.

[0045] Further, a docking hole 22 is formed on the insulating plate 3. The skeleton assembly includes a coil skeleton 23 and a U-shaped yoke iron 24 press-fitted between the coil skeleton 23 and the insulating plate 3. The lower end of the coil skeleton 23 extends downward through the U-shaped yoke iron 24 to form a clamping block 25 fitted in the docking hole 22. In this technical solution, the cooperation between the docking hole and the clamping block can stably press-fit the coil skeleton and the U-shaped yoke iron on the upper end of the insulating plate, improving the assembly stability of the insulating plate.

[0046] It should be noted here that two first docking holes 100 and three second docking holes 200 are also formed on the insulating plate. The two first docking holes 100 are in plug-in fit with the auxiliary lead-out pieces on the contactor, and the three second docking holes 200 are in plug-in fit with the coil lead-out pieces, further improving the assembly stability of the circuit board.

[0047] In this specific embodiment, for the problem that when there is leakage current in the existing contactor, the current will climb to the circuit board through the metal parts, causing the circuit board to lose its function and completely fail to work, the above solution fixes and covers the insulating plate on the base in the form of a cover plate to form a protective layer. A relatively closed accommodation cavity is formed between the base and the insulating plate, and the circuit board is positioned in the accommodation cavity. When there is leakage current, the insulating plate can effectively isolate the influence of external metal creepage on the circuit board, thereby protecting the circuit board. Moreover, the insulation assembly has high stability and can improve the service life of the product.

[0048] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0049] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model without departing from the principles and purposes of the present utility model.

Claims

1. A contactor insulation plate mounting structure, characterized in that: The invention comprises a base (1), a circuit board (2), an insulating plate (3) and a skeleton assembly, wherein a receiving groove (4) is formed at the upper end of the base (1), the insulating plate (3) is covered on the receiving groove (4) so ​​that a receiving cavity is formed between the receiving groove (4) and the insulating plate (3), and the circuit board (2) is fixedly installed in the receiving cavity; first card slots (5) are constructed on both sides of the upper end of the receiving groove (4) at the end edge, and a card strip (6) is formed on the insulating plate (3) to be connected with the first card slot (5); a card block (7) is formed on the receiving groove (4) adjacent to the first card slot (5), and a second card slot (8) adapted to the card block (7) is formed on the insulating plate (3); and the skeleton assembly is press-fitted on the upper end of the insulating plate (3).

2. A contactor insulation plate mounting structure according to claim 1, characterized in that: The bottom surface of the insulating plate (3) is formed with an assembly frame (9), the circuit board (2) is adapted to be arranged in the assembly frame (9), at least two plug blocks (10) are provided extending downward from the bottom surface of the insulating plate (3), and at least two plug holes (11) are provided on the circuit board (2) to be plugged into and matched with the plug blocks (10).

3. A contactor insulation plate mounting structure according to claim 2, characterized in that: At least two support platforms (12) corresponding to the insert blocks (10) are provided at the bottom of the receiving groove (4), and a support groove (13) is provided on the support platform (12), and the lower part of the insert block (10) abuts against the support groove (13).

4. A contactor insulation plate mounting structure according to claim 2, characterized in that: A plurality of first reinforcing ribs (14) are constructed on the bottom surface of the receiving groove (4), and both sides of the first reinforcing ribs (14) extend to the side walls of the receiving groove (4); a portion of the ribs extending to the side walls of the receiving groove (4) are configured as supporting ribs (15), and the lower end of the assembly frame (9) and the lower end of the width side of the insulating plate (3) close to the clamping strip (6) are overlapped on the supporting ribs (15).

5. A contactor insulation plate mounting structure according to claim 4, characterized in that: The widthwise side of the insulating plate (3) close to the second clamping groove (8) overlaps the upper end edge of the accommodating groove (4).

6. A contactor insulation plate mounting structure according to claim 5, characterized in that: The insulating plate (3) has a widthwise side close to the second slot (8) extending outward to form an extension slot (17) adapted to fit the protruding portion of the circuit board (2), and a support block (18) is provided in the extension slot (17) to support the lower end of the insulating plate (3).

7. A contactor insulation plate mounting structure according to claim 6, characterized in that: A plurality of grounding plates (19) are integrated on the insulating plate (3), a plurality of positioning holes (20) are provided on the protruding portion of the circuit board (2), and the lower end of the grounding plate (19) extends downward through the positioning hole (20) to form a plug-in connection with the circuit board (2).

8. A contactor insulation plate mounting structure according to claim 3, characterized in that: A plurality of second reinforcing ribs (21) are provided on the upper end surface of the insulating plate (3).

9. A contactor insulation plate mounting structure according to claim 8, characterized in that: The insulating plate (3) is provided with a docking hole (22); the skeleton assembly comprises a coil skeleton (23) and a U-shaped yoke (24) pressed between the coil skeleton (23) and the insulating plate (3); the lower end of the coil skeleton (23) extends downward through the U-shaped yoke (24) to form a clamping block (25) embedded in the docking hole (22).

Images