A heat dissipation and flow guide structure for an electric control of a back-taping sewing machine

Abstract

The utility model discloses a kind of heat dissipation flow guide structures for back-mounted sewing machine electric control, it is related to heat dissipation technical field, to solve the problem of energy consumption, cost, noise increase that the existing heat dissipation mode of back-mounted sewing machine electric control is prone to, the heat dissipation flow guide structure includes heat dissipation air duct, the air inlet of heat dissipation air duct is located in hand wheel cover shell, the air outlet of heat dissipation air duct is located in the bottom of machine shell and between the heat dissipation bottom plate of electric control component and rear window plate;So set, without additional fan, reduce energy consumption and noise, simplify heat dissipation structure, also reduce maintenance cost simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, and more specifically, to a heat dissipation and airflow guiding structure for the electrical control of a back-mounted sewing machine. Background Technology

[0002] In the design of industrial sewing machines, the "back-mounted" design of the electrical control system has been widely adopted to achieve better space layout, simplified wiring, and easier maintenance. While this design offers significant structural advantages, it also presents a substantial technical challenge: insufficient heat dissipation efficiency. The core power components in the electrical control system, such as IGBTs and power modules, cannot dissipate heat quickly enough, leading to heat buildup within the control box. This causes a continuous rise in operating temperature, severely impacting the reliability, durability, and stability of the electrical control system.

[0003] Currently, the industry standard solution to address this heat dissipation issue is to install a cooling fan inside the electronic control unit housing, using forced air cooling to improve heat dissipation. However, while this method improves heat dissipation to some extent, it also introduces additional energy consumption, increased costs, and noise issues from the fan during operation. Furthermore, as a consumable component, the fan has a limited lifespan, which further reduces the reliability of the entire system.

[0004] Therefore, how to solve the problems of increased energy consumption, cost, and noise caused by the existing heat dissipation methods of back-mounted sewing machine electrical control is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a heat dissipation and airflow guiding structure for the electrical control of a back-mounted sewing machine, which eliminates the need for an additional fan, reduces energy consumption and noise, simplifies the heat dissipation structure, and also reduces maintenance costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A heat dissipation and airflow guiding structure for the electrical control of a back-mounted sewing machine includes: a heat dissipation duct, an air inlet of which is located in the handwheel cover, and an air outlet of which is located at the bottom of the machine housing and between the heat dissipation base plate of the electrical control component and the rear window plate.

[0008] Preferably, it also includes a flow guiding structure, which is located near the air inlet of the heat dissipation duct to guide the airflow entering through the air inlet of the heat dissipation duct to the electronic control components.

[0009] Preferably, the flow guiding structure includes flow guiding ribs, which are disposed on the heat dissipation base plate.

[0010] Preferably, multiple guide ribs are provided, and the multiple guide ribs are arranged in parallel, forming a guide channel between two adjacent guide ribs.

[0011] Preferably, the extension direction of the guide channel is set at an angle to the airflow inlet direction.

[0012] Preferably, the airflow guiding structure also includes an air guide plate located inside the handwheel cover, used to guide the airflow entering through the air inlet of the heat dissipation air duct into the airflow guiding channel.

[0013] Preferably, the air guide plate is an arc-shaped plate.

[0014] Preferably, the air inlet of the heat dissipation duct is equipped with a ventilation grille.

[0015] Preferably, the ventilation grille includes a circular plate with multiple sets of vent holes arranged radially on the circular plate.

[0016] Preferably, the vent group includes multiple arc-shaped vents, and the vent area of ​​the arc-shaped vents gradually decreases from the edge to the center along the diameter direction of the circular plate.

[0017] The heat dissipation and airflow guiding structure for the electrical control of a back-mounted sewing machine provided by this utility model includes a heat dissipation duct. The air inlet of the heat dissipation duct is located in the handwheel cover, which can naturally introduce external air by utilizing the rotation of the handwheel, eliminating the need for an additional power source (such as a fan), reducing energy consumption and noise, simplifying the heat dissipation structure, and also reducing maintenance costs. The air outlet of the heat dissipation duct is located at the bottom of the machine housing and between the heat dissipation base plate of the electrical control component and the rear window plate, which helps to directly exhaust hot air to the external environment and avoid hot air circulating inside the machine housing. This can improve heat dissipation efficiency and reduce the risk of overheating of internal components. By setting the air inlet in the handwheel cover and the air outlet at the bottom of the machine housing and between the heat dissipation base plate of the electrical control component and the rear window plate, a direct and efficient heat dissipation duct is formed, which can guide the airflow generated when the handwheel rotates to directly cool the electrical control component, thereby significantly improving heat dissipation efficiency and effectively reducing the operating temperature of the electrical control component.

[0018] The heat dissipation structure for the electronic control system of a back-mounted sewing machine, designed in the above manner, eliminates the need for an additional fan compared to traditional forced air cooling, thus reducing energy consumption and related operating costs. Furthermore, the elimination of the need for fan installation and maintenance also lowers equipment maintenance costs and complexity. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the heat dissipation and airflow guiding structure for the electrical control of a back-mounted sewing machine provided by this utility model;

[0021] Figure 2 for Figure 1 The right view;

[0022] Figure 3 This is a partial schematic diagram of the heat dissipation and airflow guiding structure for the electrical control of a back-mounted sewing machine provided by this utility model.

[0023] Figure label:

[0024] 10-Handwheel cover, 20-Machine housing, 30-Electrical control components, 40-Heat dissipation base plate, 50-Rear window plate;

[0025] 1-Heat dissipation airflow;

[0026] 2-Flow guiding structure, 21-Flow guiding rib, 22-Air guide plate;

[0027] 3-Ventilation grille. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] It should be noted that the directional terms such as "up" and "down" in the following text are defined based on the accompanying drawings in the instruction manual.

[0031] The core of this invention is to provide a heat dissipation and airflow guiding structure for the electrical control of a back-mounted sewing machine, which eliminates the need for an additional fan, reduces energy consumption and noise, simplifies the heat dissipation structure, and also reduces maintenance costs.

[0032] Please refer to Figure 1 and Figure 2 The back-mounted sewing machine includes a housing 20, a handwheel cover 10 fixedly mounted on the housing 20, a handwheel fixedly mounted on the main shaft inside the housing 20, an electronic control assembly 30 mounted on the outside of the rear window panel 50, and a side cover fixedly mounted on the electronic control assembly 30. The housing 20, as the main support structure of the sewing machine, not only provides physical protection for the internal components but also contributes to the overall structural stability. The handwheel cover 10, fixedly mounted on the housing 20, is designed to protect the handwheel and provide ease of operation. The handwheel cover 10 typically possesses sufficient strength and durability to withstand the mechanical stresses during sewing. The handwheel, fixedly mounted on the main shaft inside the housing 20, is used for manual operation of the sewing machine. The electronic control assembly 30 is mounted on the outside of the rear window panel 50 at the rear of the housing 20. The side cover fixedly mounted on the electronic control assembly 30 provides additional protection for the assembly and helps create a sealed environment, preventing dust and debris from entering, thereby improving the reliability and durability of the electronic control assembly 30. This back-mounted design optimizes space layout, simplifies wiring, and facilitates maintenance. The electronic control unit 30 is the brain of the sewing machine, responsible for controlling various sewing operations and motor drives.

[0033] Please refer to Figure 3 A heat dissipation and airflow guiding structure for the electrical control of a back-mounted sewing machine includes a heat dissipation duct 1.

[0034] Specifically, the air inlet of the heat dissipation duct 1 is located in the handwheel cover 10, which can naturally introduce external air by rotating the handwheel without the need for an additional power source (such as a fan), thus reducing energy consumption and noise, simplifying the heat dissipation structure, and reducing maintenance costs. The air outlet of the heat dissipation duct 1 is located at the bottom of the housing 20 and between the heat dissipation base plate 40 of the electronic control component 30 and the rear window plate 50, which helps to directly exhaust hot air to the external environment and avoid hot air circulating inside the housing 20. This can improve heat dissipation efficiency and reduce the risk of overheating of internal components. By setting the air inlet in the handwheel cover 10 and the air outlet at the bottom of the housing 20 and between the heat dissipation base plate 40 of the electronic control component 30 and the rear window plate 50, a direct and efficient heat dissipation duct 1 is formed, which can guide the airflow generated when the handwheel is rotated to directly cool the electronic control component 30, thereby significantly improving heat dissipation efficiency and effectively reducing the operating temperature of the electronic control component 30.

[0035] The heat dissipation structure for the back-mounted sewing machine's electrical control, designed in the above manner, eliminates the need for an additional fan compared to traditional forced air cooling, thus reducing energy consumption and related operating costs. Furthermore, the elimination of the need for fan installation and maintenance also lowers equipment maintenance costs and complexity.

[0036] In the above embodiment, a flow guiding structure 2 is also included. The flow guiding structure 2 is disposed near the air inlet of the heat dissipation duct 1 and is used to guide the airflow entering through the air inlet of the heat dissipation duct 1 to the electronic control component 30.

[0037] It should be noted that the airflow guiding structure 2 can be integrated into the heat dissipation duct 1, which helps guide the airflow entering from the air inlet of the heat dissipation duct 1 more directly to the critical heat dissipation areas of the electronic control component 30, thereby improving heat dissipation efficiency. Through the guidance of the airflow guiding structure 2, the airflow can be distributed more evenly, ensuring that all parts of the electronic control component 30 are effectively cooled, reducing reliance on additional fans or power equipment, thus reducing energy consumption and noise generation. More efficient heat dissipation reduces thermal stress damage to the electronic control component 30, prevents overheating, improves the stability and reliability of the entire sewing machine system, and thus extends the service life of the equipment. Furthermore, reducing reliance on vulnerable components such as fans helps reduce maintenance needs and related costs.

[0038] In the above case, the flow guiding structure 2 includes flow guiding ribs 21, which are disposed on the heat dissipation base plate 40.

[0039] Understandably, the airflow guide ribs 21 help improve the airflow path near the heat dissipation base plate 40, allowing the airflow to more precisely dissipate heat from key heat-generating components in the electronic control assembly 30, thus improving the targeting and efficiency of heat dissipation. Furthermore, the airflow guide ribs 21 can increase the surface area of ​​the heat dissipation base plate 40, thereby enhancing heat conduction and enabling heat to be transferred more quickly from the electronic control assembly 30 to the heat dissipation duct 1. The airflow guide ribs 21 can be integrally molded with the heat dissipation base plate 40, simplifying the manufacturing process and reducing production costs.

[0040] The airflow guiding structure 2 can be one or more airflow guiding plates, which are set near the air inlet of the heat dissipation air duct 1 to directly guide the airflow towards the electronic control component 30. The airflow guiding structure 2 can be a semi-enclosed or fully enclosed airflow guiding shroud, which covers the air inlet and has an opening only in the direction facing the electronic control component 30 to concentrate the airflow.

[0041] Furthermore, multiple guide ribs 21 are provided, and multiple guide ribs 21 are arranged side by side, forming a guide channel between two adjacent guide ribs 21.

[0042] It should be noted that the parallel arrangement of multiple airflow guide ribs 21 increases the total heat dissipation area of ​​the heat sink base plate 40, which helps to dissipate the heat generated by the electronic control component 30 more effectively. The presence of the airflow guide channels helps to distribute the airflow evenly across the entire heat sink base plate 40, ensuring uniform heat dissipation and avoiding localized overheating. The design of the airflow guide channels helps to reduce airflow resistance, allowing heat to be transferred more smoothly from the electronic control component 30 to the air.

[0043] The number of guide ribs 21 and the size of the guide channel can be adjusted according to the specific heat dissipation requirements of the electronic control component 30 to adapt to different application scenarios.

[0044] In the above embodiments, the extension direction of the guide channel is set at an angle to the airflow inlet direction.

[0045] Understandably, the angle between the airflow channel and the air intake direction promotes turbulence as the airflow passes through the electronic control component 30, increasing the contact between air and the heat dissipation surface, thereby improving heat exchange efficiency. The angled design helps guide airflow to be more evenly distributed across the heat dissipation base plate 40, preventing insufficient cooling in some areas while excessive cooling in others, ensuring uniform cooling of the entire electronic control component 30. The extension direction of the airflow channel can be optimized based on the heat source distribution of the electronic control component 30, allowing the airflow to flow more directly to the areas requiring the most heat dissipation.

[0046] At least some of the flow channels extend in an upward direction to effectively reduce the temperature of the electronic control components 30 distributed in the upward direction of the heat dissipation base plate 40.

[0047] Based on the above embodiments, the airflow guiding structure 2 also includes an air guide plate 22 disposed inside the handwheel cover 10, which is used to guide the airflow entering through the air inlet of the heat dissipation air duct 1 to flow into the airflow guiding channel.

[0048] It should be noted that the design of the air guide plate 22 allows the airflow entering through the air inlet to be precisely guided to the flow channel, thereby improving airflow utilization and heat dissipation efficiency. The air guide plate 22 helps reduce disordered airflow inside the handwheel cover 10, reduces energy loss, and allows more energy to be used in the actual heat dissipation process.

[0049] In the above embodiment, the air guide plate 22 is an arc-shaped plate.

[0050] Understandably, the curved air guide plate 22 can more naturally guide airflow along a predetermined path, reducing airflow resistance and turbulence, and improving airflow efficiency. The curved structure matches the natural flow characteristics of airflow, helping to more effectively direct airflow to areas requiring heat dissipation and enhancing the guiding effect. The curved air guide plate 22 can reduce turbulence and noise during airflow because its smooth curved surface reduces friction and impact on airflow.

[0051] As a preferred embodiment, the air inlet of the heat dissipation duct 1 is provided with a ventilation grille 3.

[0052] It should be noted that the ventilation grille 3 can block dust, fibers, and other debris from entering the heat dissipation duct 1, reducing contamination and damage to the internal components of the heat dissipation system. By preventing large particles from entering, it helps protect the electronic control components 30, extending their service life, and also helps maintain stable airflow into the heat dissipation duct 1, reducing the impact of airflow fluctuations on the heat dissipation effect. Furthermore, it can reduce turbulence and noise generated when airflow passes through, providing a quieter working environment for operators.

[0053] In the above case, the ventilation grille 3 includes a circular plate with multiple sets of vent holes arranged radially on the circular plate.

[0054] Understandably, the radially arranged vent array helps to distribute the incoming airflow evenly, thereby achieving a more balanced heat dissipation effect throughout the entire heat dissipation duct 1. The design of multiple vent arrays increases the ventilation area, improves breathability, allows more air to pass through, and enhances heat dissipation capacity. The radial layout of the vent array helps to reduce airflow resistance, allowing air to enter the heat dissipation duct 1 more smoothly.

[0055] In the above embodiments, the vent group includes multiple arc-shaped vents, and the vent area of ​​the arc-shaped vents gradually decreases from the edge to the center along the diameter direction of the circular plate.

[0056] It should be noted that by making the vent area in the central area smaller, the airflow velocity in that area can be increased, thus improving the heat dissipation efficiency of the central area. The larger vent area in the edge areas helps to promote airflow entry, increasing airflow volume in the edge areas and thereby improving the overall heat dissipation performance of the panel. This design allows for a more even distribution of airflow as it passes through the ventilation grille 3, improving airflow utilization and preventing airflow congestion in localized areas. The arc-shaped vent design helps to reduce turbulence generated during airflow, thereby reducing noise and providing a quieter working environment.

[0057] Furthermore, a ventilation grille 3 is also provided at the air outlet at the bottom of the housing 20. The ventilation grille 3 can prevent external dust, fibers, or other foreign objects from entering the interior of the housing 20, protecting the internal components from contamination. By preventing large particles from entering, it helps protect the heat dissipation channels and electronic control components 30, extending their service life; it allows airflow to pass smoothly while reducing airflow resistance, ensuring effective heat dissipation; it helps maintain the uniformity of airflow at the air outlet, improving heat dissipation efficiency and avoiding localized overheating; it can reduce turbulence and noise generated when airflow passes through, providing a quieter working environment for operators.

[0058] The ventilation grille 3 at the bottom of the housing 20 features rectangular vents, providing a larger open area that enhances ventilation performance and increases airflow efficiency. The rectangular shape helps reduce airflow resistance, allowing for smoother airflow through the grille and minimizing energy loss. The edges of the vents are rounded to reduce turbulence and noise generated during airflow, as the chamfer helps smooth the airflow and reduce vibrations caused by airflow impacting the edges of the vents.

[0059] The rotation of the handwheel effectively draws outside air into the handwheel housing 10. The airflow is then divided into two parts for heat dissipation within the housing 10. One part flows downwards along the inside of the housing 10, a flow path design that helps capture and remove heat generated by the motor. This heat-laden airflow is then exhausted through the ventilation grille 3 at the bottom of the housing 20, achieving effective heat dissipation in the motor area. The other part of the airflow flows laterally under the guidance of the air guide plate 22, passing through the carefully designed guide ribs 21 on the heat dissipation base plate 40, ensuring that the heat source area of ​​the electronic control component 30 is adequately cooled. Finally, this heat-exchanged airflow is discharged to the outside environment through the exhaust port located near the electronic control component 30. This ingenious airflow distribution and guiding design not only improves heat dissipation efficiency but also ensures the stable operation of the electronic control component 30 and the motor area, thereby enhancing the overall performance and reliability of the hanging sewing machine.

[0060] In summary, the heat dissipation and airflow guiding structure for the electronic control of a back-mounted sewing machine provided by this utility model achieves efficient heat dissipation without the need for an additional fan. Through a specially designed heat dissipation duct 1 and airflow guiding structure 2, the airflow generated by the handwheel rotation is guided directly to cool the electronic control components 30, significantly improving heat dissipation efficiency and enhancing the stability and reliability of the entire sewing machine system. This method of utilizing natural airflow for heat dissipation eliminates the need for additional fans or power equipment, thereby reducing energy consumption and avoiding noise generated by fans or other power equipment, providing a quieter working environment for operators.

[0061] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0062] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0063] The above provides a detailed description of a heat dissipation and airflow guiding structure for the electrical control of a back-hanging sewing machine. Specific examples have been used to illustrate the principle and implementation of this invention. The descriptions of the embodiments are merely for the purpose of helping to understand the method and core idea of ​​this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of this invention.

Claims

1. A heat dissipation and airflow guiding structure for the electrical control of a back-mounted sewing machine, characterized in that, include: The heat dissipation duct (1) has an air inlet located in the handwheel cover (10) and an air outlet located at the bottom of the housing (20) and between the heat dissipation base plate (40) of the electronic control component (30) and the rear window plate (50).

2. The heat dissipation and airflow guiding structure for the electronic control of a back-mounted sewing machine according to claim 1, characterized in that, It also includes a flow guiding structure (2), which is located near the air inlet of the heat dissipation duct (1) and is used to guide the airflow entering through the air inlet of the heat dissipation duct (1) to the electronic control component (30).

3. The heat dissipation and airflow guiding structure for the electronic control of a back-mounted sewing machine according to claim 2, characterized in that, The flow guiding structure (2) includes flow guiding ribs (21), which are disposed on the heat dissipation base plate (40).

4. The heat dissipation and airflow guiding structure for the electronic control of a back-mounted sewing machine according to claim 3, characterized in that, The guide ribs (21) are provided in multiple ways, and the multiple guide ribs (21) are arranged in parallel, forming a guide channel between two adjacent guide ribs (21).

5. The heat dissipation and airflow guiding structure for the electronic control of a back-mounted sewing machine according to claim 4, characterized in that, The extension direction of the guide channel is set at an angle to the airflow inlet direction.

6. The heat dissipation and airflow guiding structure for the electronic control of a back-mounted sewing machine according to claim 5, characterized in that, The airflow guiding structure (2) also includes an air guide plate (22) disposed inside the handwheel cover (10) for guiding the airflow entering through the air inlet of the heat dissipation duct (1) to the airflow guiding channel.

7. The heat dissipation and airflow guiding structure for the electronic control of a back-mounted sewing machine according to claim 6, characterized in that, The air guide plate (22) is an arc-shaped plate.

8. The heat dissipation and airflow guiding structure for the electronic control of a back-mounted sewing machine according to any one of claims 1-7, characterized in that, The air inlet of the heat dissipation duct (1) is provided with a ventilation grille (3).

9. The heat dissipation and airflow guiding structure for the electronic control of a back-mounted sewing machine according to claim 8, characterized in that, The ventilation grille (3) includes a circular plate with multiple sets of vent holes arranged radially on the circular plate.

10. The heat dissipation and airflow guiding structure for the electronic control of a back-mounted sewing machine according to claim 9, characterized in that, The ventilation hole group includes multiple arc-shaped ventilation holes, and the ventilation area of ​​the arc-shaped ventilation holes gradually decreases from the edge to the center along the diameter direction of the circular plate.

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