Fixing structure of function extension module and controller comprising same

Abstract

The utility model discloses a fixing structure of a function extension module and a controller comprising the same. The fixing structure comprises a three-combination screw, a pan head screw, a metalized screw hole and a fixing screw hole which penetrate through the function extension module, a positioning column located at the bottom of the function extension module, an embedded nut and a positioning hole which are located at the top of the controller, and a grounding assembly arranged in the controller. When the function extension module needs to be fixed on the controller, the positioning column is inserted into the positioning hole, the metalized screw hole is in contact with the grounding assembly, the three-combination screw is screwed into the metalized screw hole and the grounding assembly, the fixed screw hole is aligned with the embedded nut, and the pan head screw is screwed into the fixed screw hole and the embedded nut. Therefore, the function extension module is fixedly connected with the controller, and the function extension module is grounded. The function extension module has the characteristics of compact structure, small size, convenience in disassembly and assembly, high stability and the like, and the operation reliability of the function extension module is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic equipment technical field, concretely relates to a fixing structure of function extension module and the controller containing it. BACKGROUND

[0002] The controller is a device or component for managing, regulating and directing the operation of a system or equipment. In the field of industrial automation, the controller can monitor and regulate various parameters in the production process to ensure efficient, stable and safe production. For example, the controller controls the frequency converter to control the motor, and controls the SVG, SVC and other power quality management devices to manage the power quality of the power grid. In order to make the controller have more functions, the function extension module can be added in the controller, such as encoder signal acquisition module, communication module, etc.

[0003] At present, many controllers and function extension modules are plastic shells, and the controller and the function extension module are usually fixed by buckling, which makes the grounding of the function extension module difficult and complex, and there are often many grounding wire bundles, which is not consistent with the current demand for integration, miniaturization and multifunction of products. At the same time, the fixing method of buckling is not reliable in vibration and impact environment, which is easy to cause the loss of function of the function extension module. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem in the prior art, and provides a fixing structure of function extension module and a controller containing the same, which are compact in structure, convenient to disassemble and assemble, and high in stability.

[0005] In order to solve the above technical problems, the utility model adopts the technical scheme that:

[0006] A fixing structure of function extension module comprises three combined screws, disc head screws, metalized screw holes and fixing screw holes penetrating the function extension module, a positioning column located at the bottom of the function extension module, an embedded nut and a positioning hole located at the top of the controller, and a grounding assembly arranged in the controller.

[0007] When the function extension module needs to be fixed to the controller, the positioning column is inserted into the positioning hole, the metalized screw hole is in contact with the grounding assembly, and the three combined screws are screwed into the metalized screw hole and the grounding assembly, the fixing screw hole is aligned with the embedded nut, and the disc head screw is screwed into the fixing screw hole and the embedded nut, so as to realize the connection and fixation of the function extension module and the controller, and the grounding of the function extension module.

[0008] As a further improvement of the utility model, the grounding assembly comprises a metal support, a metal bottom shell and a metal nut column. The metal support is provided with a first mounting column and is connected with the metal nut column through a screw, and the first mounting column is matched with the metalized screw hole; the metal bottom shell is located at the bottom of the controller, the inside of the metal bottom shell is provided with a second mounting column, the metal nut column is matched with the second mounting column, and the second mounting column and the metal nut column are screwed into a fastener to realize the connection and fixation of the metal support and the metal bottom shell, and the side of the metal bottom shell is provided with a grounding screw.

[0009] As a further improvement of the utility model, the functional expansion module is provided with a PCB board, and the metalized screw hole penetrates the PCB board.

[0010] As a further improvement of the utility model, the first mounting column is connected with the metal support through riveting.

[0011] As a further improvement of the utility model, the second mounting column is connected with the metal bottom shell through riveting.

[0012] As a further improvement of the utility model, the functional expansion module is provided with an expansion connector, the controller is provided with a controller connector, the expansion connector is connected with the controller connector through plug-in connection to realize signal transmission.

[0013] As a further improvement of the utility model, the metal support and the metal bottom shell are sheet metal parts.

[0014] As a general technical concept, the utility model also provides a controller, which comprises at least one functional expansion module, and the functional expansion module is connected and fixed on the controller through the fixing structure of the functional expansion module.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The fixing structure of the functional expansion module of the utility model is characterized in that the metalized screw hole and the fixing screw hole are arranged in the functional expansion module, the positioning column is arranged at the bottom of the functional expansion module, the embedded nut and the positioning hole are arranged at the top of the controller, and the grounding assembly is arranged in the controller; when the functional expansion module needs to be fixed on the controller, the positioning column is inserted into the positioning hole, the metalized screw hole is contacted with the grounding assembly, the metalized screw hole and the grounding assembly are connected through three combined screws, the fixing screw hole is aligned with the embedded nut, and the fixing screw hole and the embedded nut are connected through the disc head screw, so that the functional expansion module is reliably connected and fixed on the front of the controller, the reliability of screw fixation and the simple and convenient disassembly are combined, the functional expansion module is grounded through the contact of the metal screw and the grounding assembly, and the operation reliability of the functional expansion module is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 This is one of the front structural principle diagrams of the functional expansion module in a specific embodiment of this utility model;

[0018] Figure 2 This is the second schematic diagram of the front structure of the functional expansion module in a specific embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the back structure of the functional expansion module in a specific embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the structural principle of the controller in a specific embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of the exploded structure principle of the controller in a specific embodiment of this utility model;

[0022] Figure 6 This is a schematic diagram illustrating the connection structure between the functional expansion module and the controller in a specific embodiment of this utility model;

[0023] Figure 7 This is a schematic diagram of the cross-sectional structure of the functional expansion module and the controller in a specific embodiment of this utility model;

[0024] Figure 8 This is a schematic diagram illustrating the grounding principle of the functional expansion module in a specific embodiment of this utility model;

[0025] Legend: 100, Functional expansion module; 101, Metallized screw hole; 102, Fixing screw hole; 103, PCB board; 104, Interface; 105, Expansion connector; 106, Positioning post; 200, Controller; 201, First mounting post; 202, Embedded nut; 203, Controller connector; 204, Positioning hole; 205, Plastic front shell; 206, Metal bottom shell; 207, Grounding screw; 208, Metal bracket; 209, Metal nut post; 210, Second mounting post; 300, Three-piece combination screw; 400, Pan head screw. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0027] In the description of this utility model, it should be understood that the terms "side", "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, 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 number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0029] Example

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the fixing structure of the functional expansion module of this utility model includes: a three-piece combination screw 300, a pan head screw 400, a metallized screw hole 101 and a fixing screw hole 102 penetrating the functional expansion module 100, a positioning post 106 located at the bottom of the functional expansion module 100, an embedded nut 202 and a positioning hole 204 located at the top of the controller 200, and a grounding component disposed within the controller 200. In this embodiment, the metallized screw hole 101 and the fixing screw hole 102 are respectively located on different sides of the functional expansion module 100, and multiple positioning posts 106 are evenly distributed at the bottom of the functional expansion module 100. The top of the controller 200 is provided with a plastic shell 205, and the embedded nut 202 and the positioning hole 204 are both disposed on the plastic shell 205. The number of embedded nuts 202 matches the number of fixing screw holes 102, and the number of positioning holes 204 matches the number of positioning posts 106.

[0031] like Figure 6As shown, when the function expansion module 100 needs to be fixed to the controller 200, the positioning post 106 is inserted into the positioning hole 204, the metallized screw hole 101 contacts the grounding component, and the three-combination screw 300 is screwed into the metallized screw hole 101 and the grounding component. The fixing screw hole 102 is aligned with the embedded nut 202, and the pan head screw 400 is screwed into the fixing screw hole 102 and the embedded nut 202 to realize the connection and fixation of the function expansion module 100 and the controller 200, and the function expansion module 100 is grounded. The screw fixation has good reliability, is simple and convenient to disassemble and assemble, and the use of screws solves both the locking and grounding functions at the same time.

[0032] In this embodiment, by providing through-hole metallized screw holes 101 and fixing screw holes 102 in the functional expansion module 100, providing positioning posts 106 at the bottom of the functional expansion module 100, providing embedded nuts 202 and positioning holes 204 at the top of the controller 200, and providing grounding components inside the controller 200; when it is necessary to fix the functional expansion module 100 to the controller 200, the positioning posts 106 are inserted into the positioning holes 204, the metallized screw holes 101 are brought into contact with the grounding components, and the metallized screw holes 101 and the grounding components are connected by three-way combination screws 300, the fixing screw holes 102 are aligned with the embedded nuts 202, and the fixing screw holes 102 and the embedded nuts 202 are connected by pan head screws 400, thus achieving a reliable connection and fixation of the functional expansion module 100 to the front of the controller 200. This combines the reliability of screw fixing with the simplicity and convenience of disassembly and assembly, and the grounding of the functional expansion module 100 is achieved through the contact between the metal screws and the grounding components, ensuring the operational reliability of the functional expansion module 100.

[0033] like Figure 5 As shown, the grounding assembly includes a metal bracket 208, a metal base 206, and a metal nut post 209. The metal bracket 208 has a first mounting post 201, and the metal bracket 208 is connected to the metal nut post 209 by screws. The first mounting post 201 matches the metallized screw hole 101. The metal base 206 is located at the bottom of the controller 200. Inside the metal base 206 is a second mounting post 210, and the metal nut post 209 matches the second mounting post 210. Fasteners are screwed into the second mounting post 210 and the metal nut post 209 to connect and fix the metal bracket 208 to the metal base 206. A grounding screw 207 is provided on the side of the metal base 206. It can be understood that the number of stacked plates inside the controller 200 can be varied, as long as a suitable metal nut post 209 is adapted.

[0034] like Figure 1 and Figure 2As shown, the functional expansion module 100 includes a PCB board 103, with metallized screw holes 101 penetrating the PCB board 103. A three-piece set of metal screws 300 electrically connects the grounding metal hole of the PCB board 103 to the metal base 206 of the controller 200, thus achieving the locking and grounding functions of the PCB board 103.

[0035] In this embodiment, both the metal bracket 208 and the metal base shell 206 are sheet metal parts. The first mounting post 201 is riveted to the metal bracket 208, and the second mounting post 210 is riveted to the metal base shell 206. The connection is reliable, and the cost and processing technology are better.

[0036] like Figure 3 and Figure 4 As shown, the function expansion module 100 has an interface 104 on its side and an expansion connector 105 at its bottom. The controller 200 has a controller connector 203 that extends through the plastic housing 205 to the top of the controller 200. The interface 104 connects to external devices, and the expansion connector 105 and the controller connector 203 are connected by mating to achieve signal transmission.

[0037] like Figure 6 and Figure 7 As shown, this embodiment also provides a controller 200, including three functional expansion modules 100. These functional expansion modules 100 are connected and fixed to the controller 200 using the aforementioned fixed structure. One controller 200 can simultaneously connect and maintain electrical connection to three or more functional expansion modules 100.

[0038] After the function expansion module 100 is connected and fixed to the controller 200, the grounding process of the PCB board 103 in the function expansion module 100 is as follows: Figure 8 As shown, the PCB board 103, the three-combination screw 300, the first mounting post 201, the metal frame 208, the metal nut post 209, the second mounting post 210, the metal base 206, and the grounding screw 207 are connected in sequence to ground the PCB board 103.

[0039] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A fixed structure for a functional expansion module, characterized in that, include: Three-part combination screw (300), pan head screw (400), metallized screw hole (101) and fixing screw hole (102) through the functional expansion module (100), positioning post (106) at the bottom of the functional expansion module (100), embedded nut (202) and positioning hole (204) at the top of the controller (200), and grounding assembly disposed in the controller (200); When it is necessary to fix the functional expansion module (100) to the controller (200), the positioning post (106) is inserted into the positioning hole (204), the metallized screw hole (101) is in contact with the grounding component, and the metallized screw hole (101) and the grounding component are screwed with a three-combination screw (300), the fixing screw hole (102) is aligned with the embedded nut (202), and the fixing screw hole (102) and the embedded nut (202) are screwed with a pan head screw (400) to realize the connection and fixation of the functional expansion module (100) and the controller (200), and the functional expansion module (100) is grounded.

2. The fixed structure of the functional expansion module according to claim 1, characterized in that, The grounding assembly includes a metal base (206), a metal bracket (208), and a metal nut post (209). The metal bracket (208) is provided with a first mounting post (201), and the metal bracket (208) is connected to the metal nut post (209) by fasteners. The first mounting post (201) matches the metallized screw hole (101). The metal base (206) is located at the bottom of the controller (200). The metal base (206) is provided with a second mounting post (210) inside. The metal nut post (209) matches the second mounting post (210). Fasteners are screwed into the second mounting post (210) and the metal nut post (209) to realize the connection and fixation between the metal bracket (208) and the metal base (206). The side of the metal base (206) is provided with a grounding screw (207).

3. The fixed structure of the functional expansion module according to claim 2, characterized in that, The functional expansion module (100) is provided with a PCB board (103), and the metallized screw hole (101) penetrates the PCB board (103).

4. The fixed structure of the functional expansion module according to claim 2 or 3, characterized in that, The first mounting post (201) is press-fitted to the metal bracket (208).

5. The fixed structure of the functional expansion module according to claim 2 or 3, characterized in that, The second mounting post (210) is press-fitted to the metal base shell (206).

6. The fixed structure of the functional expansion module according to claim 2 or 3, characterized in that, Both the metal bracket (208) and the metal base (206) are sheet metal parts.

7. The fixed structure of the functional expansion module according to any one of claims 1 to 3, characterized in that, The functional expansion module (100) is provided with an expansion connector (105), and the controller (200) is provided with a controller connector (203). The expansion connector (105) and the controller connector (203) are connected to each other to realize signal transmission.

8. A controller comprising at least one functional expansion module (100), characterized in that, The functional expansion module (100) is fixedly connected to the controller using the fixed structure of the functional expansion module as described in any one of claims 1 to 7.

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