PLC functional module and contactor system

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a PLC function module and a contactor system. The PLC function module comprises a first housing which is concavely provided with a first accommodating groove and is provided with a first clamping unit; the first shell is provided with a first clamping unit, the second shell is provided with a second containing groove in a concave mode, the groove bottom of the second containing groove is provided with an expansion groove in a concave mode, the second shell is provided with a second clamping unit, the first clamping unit is connected with the second clamping unit in a clamping mode, and the first containing groove and the second containing groove define a containing cavity. The containing cavity is used for installing an electronic assembly board. According to the utility model, the expansion slot is concavely arranged at the slot bottom of the second accommodating slot, and after components are additionally arranged on the electronic component board, the parts, protruding relative to the electronic component board, of the components can be accommodated in the expansion slot, so that the shell structure does not need to be redesigned, the components can be conveniently additionally arranged on the electronic component board, and the function expansion of the PLC module is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a PLC function module and a contactor system. Background Art

[0002] With the development of intelligent manufacturing and intelligent power supply, contactors are frequently operated industrial components, and more and more customers require remote operation and control. The control loops are diversified and complicated, and there are a lot of AND or NOR logic operations in the control logic. Therefore, PLC controllers are used to design control circuits. In addition, using PLC controllers to design circuits can make drawings clear, which is conducive to customer debugging and maintenance.

[0003] Since the contact current of the PLC controller is low (usually 2A), while the starting current of the contactor is large, it is difficult for the PLC controller to directly control the starting motor. Therefore, a PLC function module is generally installed at the output point of the PLC, and the relay contacts in the PLC function module are used to directly drive the contactor coil to start.

[0004] The protective shell of the existing PLC functional module can only accommodate the existing electronic component board. When it is necessary to expand the function by adding components to the electronic component board at a later time, the protective shell needs to be redesigned due to the limited space in the protective shell, which increases the cost. Utility Model Content

[0005] The utility model aims to provide a PLC function module and a contactor system, which do not require redesigning the shell structure, facilitate the installation of components on the electronic component board, and facilitate the functional expansion of the PLC module.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] PLC function modules include:

[0008] A first housing is provided with a first accommodating groove, and a first clamping unit is provided on the first housing;

[0009] The second shell is provided with a second accommodating groove, the bottom of the second accommodating groove is provided with an expansion groove, the second shell is provided with a second snap-in unit, the first snap-in unit is snap-connected with the second snap-in unit, the first accommodating groove and the second accommodating groove are surrounded to form an accommodating cavity, and the accommodating cavity is used to install an electronic component board.

[0010] As an optional solution for the PLC functional module, the first snap-in unit includes a snap-in, and the second snap-in unit includes a first stopping portion. The snap-in is arranged at the bottom of the first accommodating groove, and the bottom of the second accommodating groove is provided with a first snap-in groove. The first stopping portion is arranged in the first snap-in groove, and the snap-in is inserted in the first snap-in groove and snap-engaged with the first stopping portion.

[0011] As an optional solution for the PLC functional module, the first clamping unit includes an undercut, the second clamping unit includes a second stop portion, the outer wall of the first shell is provided with a limiting slot, the undercut is arranged at the bottom of the limiting slot, the second stop portion is arranged on the second shell, the second stop portion is provided with a second clamping slot, the second stop portion is inserted into the limiting slot, and the undercut is clamped with the second clamping slot.

[0012] As an optional solution for the PLC functional module, the PLC functional module also includes an inspection window, the outer wall of the inspection window is provided with a first limit step, the second shell is provided with a mounting hole, the inner wall of the mounting hole is provided with a second limit step, the inspection window is arranged in the mounting hole, and the first limit step is abutted against the second limit step.

[0013] As an optional solution for the PLC functional module, a terminal head is provided on the electronic component board, a U-shaped limiting groove is provided at the bottom of the first accommodating groove, a through hole is provided at the bottom of the second accommodating groove, a curved section of the terminal head is placed in the U-shaped limiting groove, and a straight section of the terminal head is passed through the electronic component board (4) and passes through the through hole.

[0014] As an optional solution for the PLC functional module, a limiting hole is opened on the electronic component board, a limiting column is provided at the bottom of the first accommodating groove, a limiting groove is provided at the bottom of the second accommodating groove, and the limiting column passes through the limiting hole and is plugged into the limiting groove.

[0015] As an optional solution for the PLC functional module, the inner side wall of the first accommodating groove is provided with a first limiting protrusion, the inner side wall of the second accommodating groove is provided with a second limiting protrusion, and the electronic component board is clamped between the first limiting protrusion and the second limiting protrusion.

[0016] As an optional solution of the PLC function module, the PLC function module further includes an insulating shield, the outer side of the first shell is concavely provided with a wiring groove, a plurality of partition walls are provided in the wiring groove, each of the partition walls is provided with a guide positioning platform, a plurality of guide positioning grooves are provided in the insulating shield, and the guide positioning platform is plugged into the corresponding guide positioning groove;

[0017] A clamping portion is provided inside the insulating shield, a clamping slot is provided on the inner side wall of the wiring slot, and the clamping portion is clamped with the clamping slot.

[0018] As an optional solution for the PLC functional module, the outer wall surface of the expansion slot is provided with a hook and two guide parts, and the hook is located between the two guide parts.

[0019] A contactor system comprises a contactor and the PLC function module as described above, wherein the second housing of the PLC function module is detachably connected to the contactor.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The PLC functional module provided by the utility model has a first housing recessed with a first receiving groove, a second housing recessed with a second receiving groove, a first snap-in unit provided on the first housing, and a second snap-in unit provided on the second housing, and a receiving cavity formed by the first receiving groove and the second receiving groove is used to install an electronic component board. After the electronic component board is installed in the receiving cavity, the connection stability between the first housing and the second housing is ensured by adding the first snap-in unit and the second snap-in unit. An expansion groove is recessed at the bottom of the second receiving groove, and when components are added to the electronic component board, the protruding portion of the components relative to the electronic component board can be accommodated in the expansion groove, so there is no need to redesign the housing structure, which is convenient for installing components on the electronic component board and for the functional expansion of the PLC module.

[0022] In the contactor system provided by the utility model, the second housing of the PLC functional module is detachably connected to the contactor, and components can be added to the electronic component board, which not only facilitates the functional expansion of the PLC module, but also increases the control mode of the contactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the assembly of the PLC functional module in the embodiment of the utility model;

[0024] Figure 2 This is a first exploded schematic diagram of a PLC functional module in an embodiment of the utility model;

[0025] Figure 3 This is a second exploded schematic diagram of the PLC functional module in the embodiment of the utility model;

[0026] Figure 4 is a structural schematic diagram of the first housing in the first perspective of the embodiment of the utility model;

[0027] Figure 5 is a structural schematic diagram of the first housing in the second viewing angle in the embodiment of the utility model;

[0028] Figure 6is a schematic structural diagram of the second housing in a first viewing angle in an embodiment of the utility model;

[0029] Figure 7 It is a schematic diagram of the cooperation between the buckle and the first stopper in the embodiment of the utility model;

[0030] Figure 8 It is a schematic diagram of the cooperation between the undercut and the second stopper in the embodiment of the utility model;

[0031] Fig. 9 is a structural schematic diagram of the second housing in the embodiment of the utility model from a second viewing angle;

[0032] Fig.10 It is a structural schematic diagram of the inspection window in the embodiment of the utility model;

[0033] Fig.11 It is a structural schematic diagram of the insulating shield in the first perspective of the embodiment of the utility model;

[0034] Fig.12 It is a structural schematic diagram of the insulating shield in the second viewing angle in the embodiment of the utility model;

[0035] Fig.13 It is a schematic diagram of the cooperation between the guide positioning platform and the guide positioning groove in the embodiment of the utility model;

[0036] Fig.14 It is a schematic diagram of the cooperation between the clamping portion and the clamping slot in the embodiment of the utility model.

[0037] Reference numerals in the figures:

[0038] 1. First housing; 2. Second housing; 3. Inspection window; 31. First limiting step; 32. Fifth chamfer; 33. Sixth chamfer; 4. Electronic component board; 41. Limiting hole; 5. Terminal block; 6. Insulating shield; 61. Guide and positioning groove; 62. Clamping part; 63. Support rib; 64. Protection structure; 65. Module terminal symbol; 7. Conductive plate;

[0039] 11. first receiving groove; 12. buckle; 121. first chamfer; 13. undercut; 131. third chamfer; 14. U-shaped limiting groove; 15. limiting column; 16. first limiting protrusion; 17. partition wall; 171. guide positioning platform; 18. wiring groove; 181. card slot; 19. limiting slot;

[0040] 21. Second accommodating groove; 211. Expansion groove; 22. First snap-fit ​​groove; 221. First stop portion; 222. Second chamfer; 23. Second stop portion; 231. Second snap-fit ​​groove; 232. Fourth chamfer; 24. Mounting hole; 241. Second limiting step; 25. Through hole; 26. Limiting groove; 27. Second limiting protrusion; 28. Hook; 29. ​​Guide portion. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0045] In order to avoid redesigning the housing structure, facilitate the installation of components on the electronic component board, and facilitate the functional expansion of the PLC module, this embodiment provides a PLC function module and a contactor system. Figures 1 to 14 The specific contents of this embodiment are described in detail.

[0046] like Figures 1 to 8As shown, in this embodiment, the PLC function module includes a first housing 1 and a second housing 2. The first housing 1 is provided with a first receiving groove 11, and a first clamping unit is provided on the first housing 1. The second housing 2 is provided with a second receiving groove 21, and an expansion groove 211 is provided at the bottom of the second receiving groove 21. A second clamping unit is provided on the second housing 2, and the first clamping unit is clamped with the second clamping unit. The first receiving groove 11 and the second receiving groove 21 are surrounded to form a receiving cavity, and the electronic component board 4 is installed in the receiving cavity.

[0047] Exemplarily, the first shell 1 and the second shell 2 are both made of insulating materials such as plastic.

[0048] In short, the PLC functional module provided by the utility model has a first housing 1 with a first receiving groove 11, a second housing 2 with a second receiving groove 21, a first snap-in unit provided on the first housing 1, and a second snap-in unit provided on the second housing 2. The receiving cavity formed by the first receiving groove 11 and the second receiving groove 21 is used to install the electronic component board 4. After the electronic component board 4 is installed in the receiving cavity, the connection stability between the first housing 1 and the second housing 2 is ensured by adding the first snap-in unit and the second snap-in unit. An expansion groove 211 is recessed at the bottom of the second receiving groove 21. When components are added to the electronic component board 4, the protruding portion of the components relative to the electronic component board 4 can be accommodated in the expansion groove 211. Therefore, there is no need to redesign the housing structure, which is convenient for adding components to the electronic component board 4 and for the functional expansion of the PLC module.

[0049] Furthermore, if Figure 4 , Figure 6 and Figure 7 As shown, the first snap-fit ​​unit includes a snap 12, and the second snap-fit ​​unit includes a first stopper 221. The snap 12 is arranged at the bottom of the first receiving groove 11, and the bottom of the second receiving groove 21 is provided with a first snap-fit ​​groove 22. The first stopper 221 is arranged in the first snap-fit ​​groove 22, and the snap 12 is inserted in the first snap-fit ​​groove 22 and snap-fitted with the first stopper 221. Specifically, the head of the snap 12 is provided with a first chamfer 121, and the head of the first stopper 221 is provided with a second chamfer 222. In the process of splicing the first shell 1 and the second shell 2, the first chamfer 121 of the head of the snap 12 contacts the second chamfer 222 of the head of the first stopper 221, so that the snap 12 is deformed to a certain extent, and then the snap 12 is inserted into the first snap-fit ​​groove 22 and abuts against the back of the first stopper 221, so as to ensure the assembly stability of the first shell 1 and the second shell 2. In this embodiment, the buckle 12 is located at an upper position of the first housing 1 , and the first clamping slot 22 is located at an upper position of the second housing 2 .

[0050] Furthermore, if Figure 4 , Figure 6 and Figure 8 As shown, the first clamping unit includes an undercut 13, the second clamping unit includes a second stopper 23, the outer wall of the first shell 1 is provided with a limiting slot 19, the undercut 13 is arranged at the bottom of the limiting slot 19, the second stopper 23 is arranged on the second shell 2, the second stopper 23 is provided with a second clamping slot 231, the second stopper 23 is inserted into the limiting slot 19, and the undercut 13 is clamped with the second clamping slot 231. Specifically, the head of the undercut 13 is provided with a third chamfer 131, and the head of the second stopper 23 is provided with a fourth chamfer 232. In the process of splicing the first shell 1 and the second shell 2, the fourth chamfer 232 of the head of the second stopper 23 contacts the third chamfer 131 of the head of the undercut 13, so that the second stopper 23 is deformed to a certain extent, and then the undercut 13 is inserted into the second clamping slot 231 of the second stopper 23, so as to further ensure the assembly stability of the first shell 1 and the second shell 2. In this embodiment, the undercut 13 is located at a lower position of the first housing 1 , and the second stopper 23 is located at a lower position of the second housing 2 .

[0051] Furthermore, if Fig. 9 and Fig.10 As shown, the PLC function module further includes an inspection window 3, a mounting hole 24 is provided on the second housing 2, and the inspection window 3 is arranged in the mounting hole 24. Specifically, a first limiting step 31 is provided on the outer wall of the inspection window 3, and a second limiting step 241 is provided on the inner wall of the mounting hole 24. The first limiting step 31 abuts against the second limiting step 241, and the first limiting step 31 and the second limiting step 241 cooperate with each other to limit, thereby ensuring the assembly firmness of the inspection window 3 and the second housing 2.

[0052] Furthermore, if Fig.10 As shown, a fifth chamfer 32 and a sixth chamfer 33 are provided on the inspection window 3 to facilitate guiding the inspection window 3 to be inserted into the mounting hole 24.

[0053] Alternatively, if Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, a terminal block 5 is provided on the electronic component board 4, a U-shaped limiting groove 14 is provided at the bottom of the first accommodating groove 11, a through hole 25 is provided at the bottom of the second accommodating groove 21, a curved section of the terminal block 5 is placed in the U-shaped limiting groove 14, a straight section of the terminal block 5 is passed through the electronic component board 4 and passes through the through hole 25, and the straight section of the terminal block 5 can be connected to the corresponding interface of the contactor. By adding the U-shaped limiting groove 14, on the one hand, it is used to limit the position of the terminal block 5, and on the other hand, it is used to separate the positions of the two terminal blocks 5 to avoid short circuits. Furthermore, an insulating protective layer is provided on the curved section of the terminal block 5 to further improve the insulation performance of the PLC functional module.

[0054] Furthermore, if Figure 3 , Figure 4 and Figure 6 As shown, a limiting hole 41 is provided on the electronic component board 4, a limiting column 15 is provided at the bottom of the first accommodating groove 11, a limiting groove 26 is provided at the bottom of the second accommodating groove 21, and the head of the limiting column 15 is passed through the limiting hole 41 and plugged into the limiting groove 26. Specifically, the limiting column 15 is arranged at an upper position of the first housing 1, and the limiting groove 26 is also arranged at an upper position of the second housing 2, so as to facilitate fixing the upper part of the electronic component board 4 between the first housing 1 and the second housing 2.

[0055] Furthermore, the inner wall of the first accommodating groove 11 is provided with a first limiting protrusion 16, the inner wall of the second accommodating groove 21 is provided with a second limiting protrusion 27, and the electronic component board 4 is sandwiched between the first limiting protrusion 16 and the second limiting protrusion 27. Specifically, the first limiting protrusion 16 is arranged at a lower position of the first shell 1, and the second limiting protrusion 27 is arranged at a lower position of the second shell 2. By adding the first limiting protrusion 16 and the second limiting protrusion 27, it is convenient to fix the lower part of the electronic component board 4 between the first shell 1 and the second shell 2.

[0056] Furthermore, if Figure 5 , Figures 11 to 14 As shown, the PLC functional module also includes an insulating shield 6, a wiring groove 18 is recessed on the outer side of the first shell 1, a plurality of partition walls 17 are provided in the wiring groove 18, each partition wall 17 is provided with a guide positioning platform 171, and a plurality of guide positioning grooves 61 are provided in the insulating shield 6, and the guide positioning platform 171 is plugged into the corresponding guide positioning groove 61. Specifically, the guide positioning platform 171 is a cross-shaped structure, and the inner cavity of the guide positioning groove 61 is also cross-shaped, so that the insulating shield 6 is plugged into the first shell 1 in the horizontal direction, and the insulating shield 6 is positioned up, down, left, and right. Specifically, as Figure 2 and Figure 5 As shown, a conductive plate 7 is installed at the wiring slot 18 on the first housing 1 , and the electronic component board 4 is welded to the conductive plate 7 .

[0057] Preferably, the two sides of the inner wall of the insulating shield 6 are provided with a clamping portion 62, and the two inner side walls of the wiring slot 18 are provided with a clamping slot 181, and the clamping portion 62 is clamped with the clamping slot 181 to prevent the insulating shield 6 from sliding out. Fig.11 As shown, the insulating shield 6 is designed with supporting ribs 63 to prevent the insulating shield 6 from warping and deformation. The wiring hole of the insulating shield 6 is also designed with a protective structure 64 to improve the insulation protection performance of the product terminal. Fig.12 As shown, the insulating shield 6 is engraved with a module terminal symbol 65 to reduce production costs.

[0058] Furthermore, a hook 28 and two guide portions 29 are provided on the outer wall surface of the expansion slot 211, and the hook 28 is located between the two guide portions 29. The hook 28 and the two guide portions 29 are used to connect with the contactor.

[0059] This embodiment further provides a contactor system, which includes a contactor and the above-mentioned PLC function module, and the second housing 2 of the PLC function module is detachably connected to the contactor.

[0060] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. PLC functional module, characterized in that: include: A first housing (1) is provided with a first accommodating groove (11), and a first clamping unit is provided on the first housing (1); The second housing (2) is provided with a second accommodating groove (21), the bottom of the second accommodating groove (21) is provided with an expansion groove (211), the second housing (2) is provided with a second snap-in unit, the first snap-in unit is snap-connected with the second snap-in unit, the first accommodating groove (11) and the second accommodating groove (21) are arranged to form an accommodating cavity, and the accommodating cavity is used to install an electronic component board (4).

2. The PLC function module according to claim 1, characterized in that: The first clamping unit comprises a clamping buckle (12), and the second clamping unit comprises a first stopper (221); the clamping buckle (12) is arranged at the bottom of the first receiving groove (11); the bottom of the second receiving groove (21) is provided with a first clamping groove (22); the first stopper (221) is arranged in the first clamping groove (22); the clamping buckle (12) is inserted in the first clamping groove (22) and is clamped with the first stopper (221).

3. The PLC function module according to claim 1, characterized in that: The first clamping unit comprises an undercut (13), the second clamping unit comprises a second stopper (23), the outer wall of the first shell (1) is provided with a limiting slot (19), the undercut (13) is arranged at the bottom of the limiting slot (19), the second stopper (23) is arranged on the second shell (2), the second stopper (23) is provided with a second clamping slot (231), the second stopper (23) is inserted into the limiting slot (19), and the undercut (13) is clamped with the second clamping slot (231).

4. The PLC function module according to claim 1, characterized in that: The PLC functional module further comprises an inspection window (3), the outer wall of the inspection window (3) is provided with a first limiting step (31), the second shell (2) is provided with a mounting hole (24), the inner wall of the mounting hole (24) is provided with a second limiting step (241), the inspection window (3) is arranged in the mounting hole (24), and the first limiting step (31) is in abutment with the second limiting step (241).

5. The PLC function module according to claim 1, characterized in that: The electronic component board (4) is provided with a terminal head (5), the bottom of the first accommodating groove (11) is provided with a U-shaped limiting groove (14), the bottom of the second accommodating groove (21) is provided with a through hole (25), the curved section of the terminal head (5) is placed in the U-shaped limiting groove (14), and the straight section of the terminal head (5) is passed through the electronic component board (4) and passes through the through hole (25).

6. The PLC function module according to claim 1, characterized in that: A limiting hole (41) is provided on the electronic component board (4); a limiting column (15) is provided at the bottom of the first accommodating groove (11); a limiting groove (26) is provided at the bottom of the second accommodating groove (21); the limiting column (15) passes through the limiting hole (41) and is plugged into the limiting groove (26).

7. The PLC function module according to claim 1, characterized in that: The inner side wall of the first accommodating groove (11) is provided with a first limiting protrusion (16), the inner side wall of the second accommodating groove (21) is provided with a second limiting protrusion (27), and the electronic component board (4) is clamped between the first limiting protrusion (16) and the second limiting protrusion (27).

8. The PLC function module according to claim 1, characterized in that: The PLC functional module further comprises an insulating shield (6); a wiring groove (18) is recessed on the outer side of the first shell (1); a plurality of partition walls (17) are arranged in the wiring groove (18); a guide positioning platform (171) is arranged on each of the partition walls (17); a plurality of guide positioning grooves (61) are arranged in the insulating shield (6); and the guide positioning platform (171) is plugged into the corresponding guide positioning groove (61); A clamping portion (62) is provided inside the insulating shield (6), a clamping slot (181) is provided on the inner side wall of the wiring slot (18), and the clamping portion (62) is clamped with the clamping slot (181).

9. The PLC function module according to claim 1, characterized in that: The outer wall surface of the expansion slot (211) is provided with a hook (28) and two guide portions (29), and the hook (28) is located between the two guide portions (29).

10. A contactor system, characterized in that It comprises a contactor and a PLC function module as claimed in any one of claims 1 to 9, wherein the second housing (2) of the PLC function module is detachably connected to the contactor.

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