A low-voltage frequency converter retrofit quick wiring terminal extension device

Abstract

The utility model provides a kind of low voltage frequency converter reconstruction's quick wiring terminal extension device, it is related to the quick wiring terminal extension equipment field for low voltage frequency converter, including extension component, including end cover, rear cover located end cover back, wiring terminal located end cover two sides, and connecting interface located end cover upper end, connecting component, including support plate located rear cover back, clamping slot and reserved hole located support plate surface, buckle located rear cover back;The utility model is provided with extension component and connecting component, realize the quick, stable connection between low voltage frequency converter and extension module, end cover, rear cover, wiring terminal and connecting interface in extension component jointly constitute a structure that is convenient for wiring and expansion, while support plate, clamping slot, reserved hole and buckle in connecting component provide stable support and fixing mode, by flexible connection and fixing mode, so that extension module can adapt to different kinds of low voltage frequency converter.

Description

Technical Field

[0001] This utility model belongs to the field of quick-connect terminal expansion equipment for low-voltage frequency converters, specifically a quick-connect terminal expansion device for the retrofitting of low-voltage frequency converters. Background Technology

[0002] A low-voltage frequency converter is an adjustable output frequency AC motor drive device with a voltage level below 690V. It is mainly used to control the speed and operating status of the motor to achieve energy saving and precise control. It is widely used in the field of automated processing. When connecting a low-voltage frequency converter to external equipment, wiring terminals are usually used. The wiring terminals are mainly divided into main circuit and control circuit. The main circuit is used for power transmission, and the control circuit is used for signal transmission. Since the input and output requirements of different industrial equipment and systems vary, expansion modules are used to provide more interfaces for low-voltage frequency converters for signal input and output, enabling seamless connection with various sensors, actuators and other control devices, thereby supporting more types of motor control. Since the low-voltage frequency converter and the expansion module are two independent entities, when using the expansion module, it is usually necessary to fix it to the low-voltage frequency converter. This is mainly done by using clips or screws to fix the expansion module to the expansion area of ​​the low-voltage frequency converter. However, due to the different types of low-voltage frequency converters, the installation area has certain limitations, making it difficult for the expansion module to be fully adapted to different low-voltage frequency converters when fixing it.

[0003] In summary, this utility model provides a quick-connect terminal expansion device for the retrofitting of low-voltage frequency converters to solve the above-mentioned problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A quick-connection terminal expansion device for low-voltage frequency converter retrofitting includes an expansion assembly, including an end cover, a rear cover located on the back of the end cover, terminals located on both sides of the end cover, and a connection interface located on the upper end of the end cover. The connection assembly includes a support plate located on the back of the rear cover, a slot and a reserved hole located on the surface of the support plate, and a buckle located on the back of the rear cover.

[0005] Furthermore, in this utility model, the top of the expansion component is provided with a frequency converter body, and the upper end of the support plate is fixed to the bottom of the frequency converter body by bolts.

[0006] Furthermore, in this utility model, the end cover and the rear cover are snapped together, and the main control circuit board is installed in the inner cavity of the end cover and the rear cover.

[0007] Furthermore, in this utility model, the wiring terminals are in two sets, namely input terminals and output terminals, and the connection interface is plugged into the expansion interface of the inverter body.

[0008] Furthermore, in this invention, the top of the extension component is provided with a storage slot, and the connection interface is inserted into the inner cavity of the storage slot when stored.

[0009] Furthermore, in this utility model, one end of the buckle is fixedly connected to the rear cover, and the other end of the buckle extends into the inner cavity of the slot and engages with the inner cavity of the slot.

[0010] Beneficial effects: This utility model has the following beneficial effects: This invention achieves a fast and stable connection between the low-voltage frequency converter and the expansion module through the design of the expansion component and the connection component. The end cover, rear cover, wiring terminal and connection interface in the expansion component together form a structure that facilitates wiring and expansion, while the support plate, slot, reserved hole and buckle in the connection component provide a stable support and fixing method. Through the flexible connection and fixing method, the expansion module can adapt to different types of low-voltage frequency converters, which greatly improves the compatibility and practicality of the equipment. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the structure of the expansion component and the connection component in the separated state of this utility model; Figure 3 This is a schematic diagram of the connection state structure between the connection component and the inverter body of this utility model; Figure 4 This is a schematic diagram of the main structure of the extension component of this utility model.

[0012] In the picture: 100. Extension component; 110. End cover; 120. Rear cover; 130. Terminal block; 140. Connection interface; 150. Storage slot; 200. Connection component; 210. Support plate; 220. Slot; 230. Snap-on; 240. Reserved hole; 300. Inverter body. Detailed Implementation

[0013] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0014] Example 1 like Figure 1-4 As shown, this is the first embodiment of the present invention. This embodiment provides a quick terminal block expansion device for the retrofitting of a low-voltage frequency converter, including an expansion component 100, including an end cover 110, a rear cover 120 located on the back of the end cover 110, terminal blocks 130 located on both sides of the end cover 110, and a connection interface 140 located on the upper end of the end cover 110. The connection component 200 includes a support plate 210 located on the back of the rear cover 120, a slot 220 and a reserved hole 240 located on the surface of the support plate 210, and a buckle 230 located on the back of the rear cover 120.

[0015] like Figure 1-4 As shown, the expansion component 100 and the connecting component 200 are engaged with each other via a snap-fit ​​230 and a slot 220. The expansion component 100 can also be fixedly connected to the inverter body 300 via a pre-drilled hole 240 and bolts. The end cover 110 has a storage groove 150 with a sealing gasket inside. This sealing gasket improves the seal between the expansion component 100 and the inverter body 300, preventing dust from entering the gap between them and ensuring the normal operation of the device. Terminal 13... Both terminal 100 and connection interface 140 are electrically connected to expansion component 100. The wiring terminal 130 and connection interface 140 facilitate wire access and connection, improving wiring efficiency. The main control circuit board is installed in the inner cavity of end cover 110 and rear cover 120. The main control circuit board is electrically connected to terminal 130 and connection interface 140 to control the operation of the entire device. During use, simply connect the wires to the input and output terminals respectively, and then plug them into the expansion interface of inverter body 300 through connection interface 140 to achieve quick wiring.

[0016] Example 2 Reference Figure 1-4 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0017] In this embodiment, the top of the expansion component 100 is provided with the inverter body 300, and the upper end of the support plate 210 is fixed to the bottom of the inverter body 300 by bolts.

[0018] The end cover 110 and the rear cover 120 are snapped together, and the main control circuit board is installed in the inner cavity of the end cover 110 and the rear cover 120.

[0019] The terminal blocks 130 consist of two sets, one for input and one for output, and the connection interface 140 is plugged into the expansion interface of the inverter body 300.

[0020] The top of the extension component 100 is also provided with a storage slot 150, and the connection interface 140 is inserted into the inner cavity of the storage slot 150 when stored.

[0021] One end of the buckle 230 is fixedly connected to the back cover 120, and the other end of the buckle 230 extends into the inner cavity of the slot 220 and engages with the inner cavity of the slot 220.

[0022] like Figure 1-4 As shown, the support plate 210 is fixed to the bottom of the inverter body 300 with bolts. The expansion component 100 is fixed to the surface of the support plate 210 through the cooperation of the slot 220 and the buckle 230, thus completing the connection between the low-voltage inverter and the expansion module. The wires are connected to the input and output terminals, i.e., the wiring terminals 130. Since the wiring terminals 130 are electrically connected to the main control circuit board, the main control circuit board can receive and process the signals from the wires, thereby realizing the control of the entire device. The connection interface 140 is plugged into the expansion interface of the inverter body 300 to complete the electrical connection between the low-voltage inverter and the expansion module. Through the set expansion component 100 and connection component 200, a fast and stable connection between the low-voltage inverter and the expansion module is realized, which greatly improves the compatibility and practicality of the equipment.

[0023] In use, the support plate 210 is fixed to the bottom of the inverter body 300 with bolts, and the expansion component 100 is snapped into the slot 220 on the support plate 210 through the buckle 230 on the back of the rear cover 120. The connection interface 140 is plugged into the expansion interface of the inverter body 300 to complete the electrical connection. After installation, it can be further fixed or expanded through the reserved hole 240. External power supply and load are connected through terminal block 130. Terminal block 130 transmits signals or power to the internal main control circuit board. The main control circuit board processes the signals and communicates with the inverter body 300 through connection interface 140. The inverter body 300 adjusts the output frequency and voltage according to the control signal to achieve precise control of the load. During disassembly, simply release the latch 230 from the slot 220, separate the connection interface 140 from the expansion interface of the low-voltage frequency converter, and store the connection interface 140 in the storage slot 150. The wiring terminal 130 can be quickly plugged in and out for easy replacement or maintenance. The overall modular design not only improves maintenance efficiency but also achieves a quick and stable connection between the low-voltage frequency converter and the expansion module, greatly improving the compatibility and practicality of the equipment.

[0024] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0025] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A quick-connect terminal block expansion device for low-voltage frequency converter retrofitting, characterized in that: include, The extension component (100) includes an end cap (110), a rear cover (120) located on the back of the end cap (110), wiring terminals (130) located on both sides of the end cap (110), and a connection interface (140) located on the upper end of the end cap (110). The connecting assembly (200) includes a support plate (210) on the back of the rear cover (120), a slot (220) and a reserved hole (240) on the surface of the support plate (210), and a buckle (230) on the back of the rear cover (120).

2. The quick-connect terminal expansion device for low-voltage frequency converter retrofit as described in claim 1, characterized in that: The top of the expansion component (100) is provided with a frequency converter body (300), and the upper end of the support plate (210) is fixed to the bottom of the frequency converter body (300) by bolts.

3. The quick-connect terminal expansion device for low-voltage frequency converter retrofit as described in claim 1, characterized in that: The end cap (110) and the rear cover (120) are snapped together, and the main control circuit board is installed in the inner cavity of the end cap (110) and the rear cover (120).

4. The quick-connect terminal expansion device for low-voltage frequency converter retrofit as described in claim 1, characterized in that: The wiring terminals (130) are in two sets, namely input terminals and output terminals, and the connection interface (140) is plugged into the expansion interface of the inverter body (300).

5. The quick-connect terminal expansion device for low-voltage frequency converter retrofit as described in claim 1, characterized in that: The top of the expansion component (100) is also provided with a storage slot (150), and the connection interface (140) is inserted into the inner cavity of the storage slot (150) when stored.

6. The quick-connect terminal expansion device for low-voltage frequency converter retrofit as described in claim 1, characterized in that: One end of the buckle (230) is fixedly connected to the rear cover (120), and the other end of the buckle (230) extends into the inner cavity of the slot (220) and engages with the inner cavity of the slot (220).

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