Transformer coil framework

Abstract

The utility model provides a transformer coil framework which comprises a cylindrical coil winding part and a containing part, the containing part is arranged on the outer wall of the coil winding part, a protection groove used for containing a temperature switch is formed in the containing part, and the containing part is provided with a first opening used for a lead of the temperature switch to pass through. The first opening is communicated with the protection groove, a second opening convenient for a temperature switch to sense the temperature of the coil is formed in one side, far away from the coil winding part, of the containing part, and the second opening is communicated with the protection groove. According to the transformer coil framework, the protection groove is formed in the outer wall of the coil winding part and used for protecting the temperature switch against the pressing force of the coil, the second opening is formed and used for the temperature switch to sense the temperature change of the coil, the temperature switch is protected, meanwhile, the temperature of the temperature switch is normally measured, and the transformer coil framework is simple in structure, convenient to use and practical.

Description

Technical Field

[0001] This utility model relates to the technical field of power transformers, and in particular to a transformer coil frame. Background Technology

[0002] Traditional transformer frames do not have dedicated protective parts to protect temperature switches. Temperature switches are usually placed directly on the coil winding part of the frame and fixed with tape. After fixing, the electromagnetic wire is wound around the upper surface of the temperature switch, making the temperature switch susceptible to the pressure of the electromagnetic wire. This causes the temperature switch's casing and internal bimetallic strip to be squeezed and deformed, which may hinder the opening and closing of the contacts, leading to the failure of the protection action and easily causing safety accidents. Utility Model Content

[0003] The purpose of this application is to solve the above-mentioned problems by providing a transformer coil frame that addresses the technical problem that existing transformer temperature switches are prone to failure due to improper fixing.

[0004] To achieve the above objectives, this application provides a transformer coil frame, including a cylindrical coil winding portion and a receiving portion. The receiving portion is disposed on the outer wall of the coil winding portion, and its interior is provided with a protective groove for receiving a temperature switch. The receiving portion is provided with a first opening for the lead wire of the temperature switch to pass through, and the first opening communicates with the protective groove. On the side of the receiving portion away from the coil winding portion, a second opening is provided to facilitate the temperature switch to sense the temperature of the coil, and the second opening communicates with the protective groove.

[0005] Compared with the prior art, the transformer coil frame of this utility model has a protective groove on the outer wall of the coil winding part to protect the temperature switch from the clamping force of the coil, and a second opening for the temperature switch to sense the temperature change of the coil. It protects the temperature switch while allowing the temperature switch to measure the temperature normally. The structure is simple, convenient and practical.

[0006] In one embodiment, the device further includes an annular first limiting portion and a second limiting portion for limiting coil winding. The first limiting portion and the second limiting portion are disposed opposite to each other at both ends of the coil winding portion and surround the coil winding portion. The first opening is disposed in the first limiting portion. This facilitates coil winding on the coil winding portion and prevents detachment.

[0007] In one embodiment, the first limiting portion is provided with a first positioning hole for positioning the beginning of the coil and a second positioning hole for positioning the end of the coil. The first positioning hole is located close to the coil winding portion, and the second positioning hole is located away from the coil winding portion. This facilitates positioning of the coil during winding, improving winding efficiency and convenience.

[0008] In one embodiment, the second positioning hole is a U-shaped hole that penetrates the edge of the first limiting portion. After the coil is wound, its end can be directly pressed into the U-shaped hole, improving convenience.

[0009] In one embodiment, the coil further includes an annular third limiting portion disposed between the first and second limiting portions and surrounding the coil winding portion. Both ends of the receiving portion extend to the first and third limiting portions, respectively. Segmented winding of the coil facilitates winding and allows for control of the winding dimensions.

[0010] In one embodiment, the third limiting portion is provided with a first wire-passing hole disposed opposite to the first positioning hole, which facilitates coil winding.

[0011] In one embodiment, the coil winding portion, the receiving portion, the first limiting portion, the second limiting portion, and the third limiting portion are integrally formed. This facilitates processing and improves structural strength.

[0012] In one embodiment, the receiving portion includes a first sidewall and a second sidewall, the cross-section of which is "V"-shaped, and the first sidewall, the second sidewall, and the coil winding portion together form the protective groove. The "V"-shaped design of the receiving groove, which is wider at the bottom and narrower at the top, prevents the temperature switch from detaching from the second opening.

[0013] In one embodiment, the first opening is located at the top of the receiving portion, and the size of the first opening is equal to the cross-sectional dimension of the temperature switch, while the size of the second opening is smaller than the longitudinal cross-sectional dimension of the temperature switch. Restricting the sizes of the first and second openings ensures that the temperature switch, once inserted through the first opening, cannot be disengaged through the second opening, thus improving the reliability of the receiving portion.

[0014] In one embodiment, the coil winding portion has a core hole, and the first and second limiting portions each have two auxiliary protrusions for assisting in the installation of the core. These auxiliary protrusions are positioned opposite each other at the opening ends of the core hole, facilitating the insertion of the core into the core hole via the auxiliary protrusions.

[0015] To better understand and implement this application, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a transformer coil frame in one embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the structure of a coil wound on a transformer coil frame in one embodiment of this application.

[0018] Numbering on the map:

[0019] 1-Coil winding part, 2-Receiving part, 3-First limiting part, 4-Second limiting part, 5-Third limiting part, 6-Auxiliary protrusion, 11-Magnetic core hole, 21-Protective groove, 22-First opening, 23-Second opening, 24-First sidewall, 25-Second sidewall, 31-First positioning hole, 32-Second positioning hole, 51-First wire passage hole, 52-Second wire passage hole, 100-Temperature switch. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application. It is understood that the accompanying drawings are provided for reference and illustration only, and are not intended to limit this application. The connection relationships shown in the accompanying drawings are only for clear description and do not limit the connection method.

[0021] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intervening component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; or as a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application.

[0022] It should also be noted that in the description of this application, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application 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 on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Please refer to 1. This embodiment provides a transformer coil frame, which includes a cylindrical coil winding portion 1 and a receiving portion 2. The receiving portion 2 is disposed on the outer wall of the coil winding portion 1, and has a protective groove 21 inside for receiving a temperature switch 100. The receiving portion 2 has a first opening 22 for the lead wire of the temperature switch 100 to pass through, and the first opening 22 communicates with the protective groove 21. The receiving portion 2 has a second opening 23 on the side away from the coil winding portion 1 to facilitate the temperature of the temperature switch 100 sensing the coil temperature, and the second opening 23 communicates with the protective groove 21.

[0024] The coil winding portion 1 is a hollow rectangle with rounded corners. The rectangular shape provides a large surface area, which is beneficial for the uniform distribution and tight winding of the coil. The straight edges of the rectangle facilitate coil winding and positioning, reducing the complexity of the winding process. Rounded corners significantly reduce stress concentration at the corners, improving the overall strength of the transformer coil frame. They also reduce friction between the coil and the corners during winding, improving winding efficiency and quality. In another embodiment, the coil winding portion 1 can also be cylindrical, elliptical, or other shapes.

[0025] The receiving portion 2 includes a first sidewall 24 and a second sidewall 25. The cross-section formed by the first sidewall 24 and the second sidewall 25 is "V" shaped. The first sidewall 24, the second sidewall 25, and the coil winding portion 1 together form the protective groove 21. The "V" shaped design of the receiving groove, which is wider at the bottom and narrower at the top, can prevent the temperature switch 100 from detaching from the second opening 23.

[0026] The first opening 22 is located at the top of the receiving portion 2, and its size is equal to the cross-sectional size of the temperature switch 100. The second opening 23 is smaller than the longitudinal cross-sectional size of the temperature switch 100. The first opening 22, located at the top of the receiving portion 2, facilitates the insertion of the temperature switch 100 into the protective groove 21. The size of the first opening 22, being equal to the cross-sectional size of the temperature switch 100, ensures that the temperature switch 100 can be accurately and stably installed in the receiving groove, reducing errors and loosening during installation and improving the reliability and stability of the temperature switch 100. The second opening 23, being smaller than the longitudinal cross-sectional size of the temperature switch 100, prevents the temperature switch 100 from detaching from the second opening 23. In this embodiment, the distance from the second opening 23 to the outer wall of the coil winding portion is slightly greater than the thickness of the temperature switch 100. This allows the temperature switch 100 to monitor coil temperature changes more closely without being compressed by the coil. Furthermore, adhesive tape can be used to secure one side of the temperature switch 100, fixing it to the top of the protective groove 21 (i.e., at the second opening 23) and improving its stability. In another embodiment, the temperature switch 100 can also be fixed to the bottom of the protective groove 21.

[0027] The transformer coil frame also includes annular first limiting portion 3 and second limiting portion 4 for limiting coil winding. The first limiting portion 3 and the second limiting portion 4 are disposed opposite to each other at both ends of the coil winding portion 1 and surround the coil winding portion 1. The first opening 22 is disposed on the first limiting portion 3. The first limiting portion 3 and the second limiting portion 4 are used to limit the winding of the coil, ensuring that the coil can be wound neatly and orderly on the coil winding portion 1. Simultaneously, the first opening 22 is disposed on the first limiting portion 3, further facilitating the connection of the temperature switch 100 lead. In another embodiment, the first opening 22 can also be disposed on the second limiting portion 4.

[0028] The first limiting part 3 is provided with a first positioning hole 31 for positioning the beginning of the coil and a second positioning hole 32 for positioning the end of the coil. The first positioning hole 31 is located close to the coil winding part 1, and the second positioning hole 32 is located away from the coil winding part 1. The first positioning hole 31 is located close to the coil winding part 1, which facilitates the precise positioning of the beginning of the coil on the frame during coil winding, ensuring the correct starting position of the coil and avoiding deviation or misalignment during winding. The second positioning hole 32 is located away from the coil winding part 1, providing a fixed position for the end of the coil, which can firmly fix the end of the coil to the frame after winding, preventing the coil from loosening or falling off during use. In this embodiment, the first positioning hole 31 and the second positioning hole 32 are located at both ends of the first limiting part 3. The design of positioning at both ends makes it easier for the winding worker to control the tension of the coil, ensuring the tightness and uniformity of the coil, thereby improving the winding quality. In another embodiment, the first positioning hole 31 and the second positioning hole 32 may also be located at the same end of the first limiting part 3. In another embodiment, the first positioning hole 31 and the second positioning hole 32 may also be provided on the second limiting part 4.

[0029] The second positioning hole 32 is a U-shaped hole that penetrates the edge of the first limiting part 3. The opening design of the U-shaped hole allows the end of the coil to be pressed into the hole and firmly fixed to the frame by an appropriate fixing method (such as binding, buckle, etc.), simplifying the coil installation process and improving work efficiency. In another embodiment, the second positioning hole 32 can also be a circular hole, a square hole, or a through hole of other shapes.

[0030] The transformer coil frame also includes an annular third limiting part 5, which is disposed between the first limiting part 3 and the second limiting part 4 and surrounds the coil winding part 1. The two ends of the receiving part 2 extend to the first limiting part 3 and the third limiting part 5, respectively. The third limiting part 5 divides the coil winding part 1 into two parts. For products with large currents, segmented winding makes it easier to control the coil tension, tightness, and uniformity, thereby improving manufacturing quality and efficiency, and facilitating control of the coil length. Preferably, the third limiting part 5 is located in the middle of the coil winding part 1, ensuring balanced winding in both sections. In another embodiment, the third limiting part 5 can be located near the first limiting part 3 or near the second limiting part 4. In yet another embodiment, two, three, or other numbers of limiting parts can be provided between the first limiting part 3 and the second limiting part 4, depending on the actual product, to facilitate winding.

[0031] The third limiting part 5 is provided with a first wire-passing hole 51 opposite to the first positioning hole 31. This facilitates the positioning of the beginning of the coil together with the first positioning hole 31, making it convenient for winding the coil. The third limiting part 5 is also provided with a second wire-passing hole 52 opposite to the second positioning hole 32, which facilitates the positioning of the end of the coil together with the second positioning hole 32, making it convenient for winding the coil.

[0032] The coil winding portion 1, the receiving portion 2, the first limiting portion 3, the second limiting portion 4, and the third limiting portion 5 are integrally formed. This integral design makes the connection between the various parts more robust, eliminating additional interfaces or connection points, thus improving the overall structural strength of the transformer coil frame, making it more resistant to external stress and deformation, and enhancing the reliability and durability of the transformer. In another embodiment, the coil winding portion 1, the receiving portion 2, the first limiting portion 3, the second limiting portion 4, and the third limiting portion 5 can also be detachably connected.

[0033] The coil winding portion 1 has a core hole 11. The first limiting portion 3 and the second limiting portion 4 each have two auxiliary protrusions 6 for assisting in the installation of the core. The auxiliary protrusions 6 are positioned opposite each other at the opening ends of the core hole 11. The guidance of the auxiliary protrusions 6 ensures accurate installation of the core in the core hole 11, reducing errors and loosening caused by improper installation, and improving the overall performance and stability of the transformer. In another embodiment, the number of auxiliary protrusions 6 wound around the opening of the core hole can be three, four, or other numbers. In another embodiment, the auxiliary protrusions 6 can also be an annular structure consistent with the opening of the core hole 11. Several reinforcing ribs are also provided between the auxiliary protrusions 6 and the first limiting portion 3 and the second limiting portion 4, increasing the structural strength of the auxiliary protrusions 6, the first limiting portion 3, and the second limiting portion 4, and improving the firmness and stability of the core installation.

[0034] Please refer to the following: Figure 2 The transformer coil frame provided in this application has a protective groove 21 on the outer wall of the coil winding part 1 to protect the temperature switch 100 from the clamping force of the coil, and a second opening 23 smaller than the longitudinal section of the temperature switch 100 to allow the temperature switch 100 to sense the temperature change of the coil and prevent the temperature switch 100 from detaching from the protective groove 21. The temperature switch 100 is protected while the temperature switch 100 can measure the temperature normally. The structure is simple, convenient and practical.

[0035] The specific examples described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A transformer coil frame, characterized in that: The device includes a cylindrical coil winding portion and a receiving portion. The receiving portion is located on the outer wall of the coil winding portion and has a protective groove inside for housing a temperature switch. The receiving portion has a first opening for the lead wire of the temperature switch to pass through, and the first opening communicates with the protective groove. The receiving portion has a second opening on the side away from the coil winding portion to facilitate the temperature sensing coil temperature of the temperature switch, and the second opening communicates with the protective groove.

2. The transformer coil frame according to claim 1, characterized in that: It also includes a first limiting part and a second limiting part that are annular for limiting the winding of the coil. The first limiting part and the second limiting part are disposed opposite to each other at both ends of the coil winding part and are disposed around the coil winding part. The first opening is disposed at the first limiting part.

3. The transformer coil frame according to claim 2, characterized in that: The first limiting part is provided with a first positioning hole for positioning the beginning of the coil and a second positioning hole for positioning the end of the coil. The first positioning hole is located close to the coil winding part, and the second positioning hole is located away from the coil winding part.

4. The transformer coil frame according to claim 3, characterized in that: The second positioning hole is a U-shaped hole that penetrates the edge of the first limiting part.

5. The transformer coil frame according to claim 3, characterized in that: It also includes a ring-shaped third limiting part, which is disposed between the first limiting part and the second limiting part and surrounds the coil winding part. The two ends of the receiving part extend to the first limiting part and the third limiting part, respectively.

6. The transformer coil frame according to claim 5, characterized in that: The third limiting part is provided with a first wire passage hole that is disposed opposite to the first positioning hole.

7. The transformer coil frame according to claim 5, characterized in that: The coil winding portion, the receiving portion, the first limiting portion, the second limiting portion, and the third limiting portion are integrally formed.

8. The transformer coil frame according to any one of claims 1-7, characterized in that: The receiving portion includes a first sidewall and a second sidewall. The cross-section formed by the first sidewall and the second sidewall is "eight" shaped. The first sidewall, the second sidewall, and the coil winding portion together form the protective groove.

9. The transformer coil frame according to any one of claims 1-7, characterized in that: The first opening is located at the top of the receiving part, and the size of the first opening is equal to the cross-sectional size of the temperature switch, while the size of the second opening is smaller than the longitudinal cross-sectional size of the temperature switch.

10. The transformer coil frame according to any one of claims 2-7, characterized in that: The coil winding part is provided with a magnetic core hole, and the first limiting part and the second limiting part are respectively provided with two auxiliary protrusions for assisting the installation of the magnetic core. The auxiliary protrusions are arranged opposite to each other at the two ends of the opening of the magnetic core hole.

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