Coil assembly of switching device and switching device

Abstract

The utility model provides a coil assembly of a switching device, which comprises a coil rack, a coil winding and a terminal, the coil winding is arranged on the coil rack, the coil winding is provided with a coil winding head, the coil winding head is wound on the terminal, the coil rack is provided with a winding head abdicating groove below a terminal hole, and the winding head abdicating groove is provided with a terminal hole. The winding head receding groove is used for receding the coil winding head, so that the coil winding head is contained in the winding head receding groove of the coil rack, the risk that the coil winding head is damaged can be reduced in the part assembling process, and the part reliability can be improved without adding other parts.

Description

Technical Field

[0001] This utility model relates to the field of switching electrical appliance technology, and specifically to a coil assembly for a switching electrical appliance. Background Technology

[0002] Relays are automatic switching components with isolation functions, widely used in communications, automobiles, automatic control, home appliances and other fields, and are one of the most important control components.

[0003] A relay is a mechanical device that converts electrical energy into mechanical energy to achieve a step change in output. The conversion of electrical energy into magnetic energy, and then into mechanical energy, is achieved by the relay coil. The relay coil consists of a coil frame, coil terminals, and enameled wire. Electrical energy is input through the coil terminals, flows through the coil winding around the terminals, and then into the enameled wire wound around the coil frame. Currently, most products are designed with exposed coil windings, but this poses a risk of damage and wire breakage during manufacturing, potentially causing the relay to malfunction and fail. Utility Model Content

[0004] Therefore, in response to at least one of the above problems, this utility model provides a coil assembly for a switching device and a switching device.

[0005] This utility model is achieved using the following solution:

[0006] This utility model proposes a coil assembly for a switching device, including a coil frame, a coil winding, and a terminal. The coil winding is mounted on the coil frame and has a coil winding head. The coil winding head is wound around the terminal, thereby electrically connecting the coil winding to the terminal. The terminal includes a first end and a second end that are opposite to each other. The coil frame has a terminal hole for receiving the first end of the terminal, and the terminal is assembled in the terminal hole. The coil frame is characterized in that it has a winding head clearance groove on an extension path from the opening of the terminal hole toward the second end of the terminal, and the winding head clearance groove is used to avoid the coil winding head.

[0007] In one embodiment, the coil frame includes a first base located at one end of the coil winding, and the winding head relief groove is disposed on the first base. The first base includes a downward-facing bottom surface, and the winding head relief groove has at least a bottom surface opening facing the bottom surface.

[0008] In one embodiment, the first base further includes an inner side facing the coil winding, and the winding head relief groove extends from the inner side of the first base to the lower bottom surface. The winding head relief groove forms an inner opening facing the inner side and a bottom opening facing the lower bottom surface on the first base.

[0009] In one embodiment, the inner opening is directly connected to the bottom opening.

[0010] In one embodiment, the wall of the head-wrapping relief groove is composed of multiple sets of planes, wherein the connecting edges of adjacent planes are rounded.

[0011] In one embodiment, the coil frame further includes a second base located at the other end of the coil winding, and the coil winding is mounted between the first base and the second base.

[0012] In one embodiment, the terminal is an elongated rod-shaped structure.

[0013] In one embodiment, the first end of the terminal is inserted into a mating terminal hole.

[0014] This utility model also proposes a switching device, characterized in that it includes a coil assembly of the switching device as described in any of the preceding claims.

[0015] The technical solution provided by this utility model has the following technical effects:

[0016] This utility model provides a coil assembly for a switching device, including a coil frame, a coil winding, and a terminal. The coil winding is mounted on the coil frame and has a coil winding head. The coil winding head is wound around the terminal. The coil frame has a winding head relief groove on the extension path of the second end of the terminal hole. The winding head relief groove is used to avoid the coil winding head, so that the coil winding head is accommodated in the winding head relief groove of the coil frame. This can reduce the risk of damage to the coil winding head during the assembly process and improve the reliability of the part without adding other parts. Attached Figure Description

[0017] Figure 1 This is a perspective view of the coil assembly according to an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a perspective view showing that the terminals of the coil assembly in this embodiment are not properly assembled. Detailed Implementation

[0020] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0021] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0022] Reference Figure 1-3 As shown, this embodiment provides an electromagnetic relay coil assembly 1, including a coil frame 10, a coil winding 20, and a terminal 30. The coil winding 20 is mounted on the coil frame 10. The coil frame 10 is provided with a terminal hole 11 for inserting and mounting the terminal 30. The coil winding 20 has a coil winding head 21, which is wound around the terminal 30, thereby making the coil winding 20 electrically connected to the terminal 30.

[0023] Reference Figure 1-3 Especially referring to Figure 3 The terminal 30 includes a first end 31 and a second end 32 that are opposite to each other. The terminal 30 is fitted into a terminal hole 11, which receives the first end 31 of the terminal 30. In this embodiment, the first end 31 of the terminal 30 is fitted into the mating terminal hole 11 by insertion, which simplifies the assembly process. However, it is not limited to this. In other embodiments, the first end 31 of the terminal 30 can be fitted into the terminal hole 11 by dispensing adhesive.

[0024] In this embodiment, the coil holder 10 is provided with a coil head relief groove 12 on the extension path from the opening of the terminal hole 11 toward the second end 32 of the terminal 30. The coil head relief groove 12 avoids the coil winding head 21 wound on the terminal 30, so that the coil winding head 21 is accommodated in the coil head relief groove 12 of the coil holder 10. This can reduce the risk of damage to the coil winding head 21 during the assembly process and improve the reliability of the part without adding other parts.

[0025] Reference Figure 3 As shown, when the terminal 30 is initially inserted into the coil holder 10 before winding, it is not directly inserted into place all at once. After the coil winding 20 is formed, the coil winding head 21 is wrapped around the terminal 30 before the terminal 30 is pressed into place, so that part of the coil winding head 21 is pushed into the winding head relief groove 12 of the coil holder 10. In this way, the coil assembly 1 is assembled, and the risk of damage to the coil winding head 21 can be reduced during the component assembly process without adding any parts.

[0026] Terminal 30 has a slender rod-like structure, which facilitates the winding of the coil winding head 21 and also makes wiring easier. The wall surface of the winding head relief groove 12 can be formed by a curved surface, for example, a cylindrical curved surface, to provide better protection for the coil winding head 21. In this embodiment, refer to... Figure 1 , Figure 2 Especially referring to Figure 2 The wall of the head wrapping groove 12 is composed of multiple planes, and the edges of adjacent planes are rounded to further protect the wiring.

[0027] The coil frame 10 includes a first base 110 and a second base 120. A coil winding 20 is mounted between the first base 110 and the second base 120, with the first base 110 located at one end of the coil winding 20 and the second base 120 located at the other end. A winding head relief groove 12 is provided on the first base 110. The first base 110 includes an inner surface 111 facing the coil winding 20 and a lower bottom surface 112 facing downwards. The winding head relief groove 12 extends from the inner surface 111 of the first base 110 to the lower bottom surface 112. The winding head relief groove 12 forms an inner opening facing the inner surface 111 and a bottom opening facing the lower bottom surface 112 on the first base 110. The inner opening and the bottom opening are directly connected, facilitating wiring and providing better protection for the coil winding head 21.

[0028] Of course, in some other embodiments, the head wrapping relief groove 12 may only have a bottom opening facing the bottom surface 112, which is also a feasible technical solution.

[0029] Although this embodiment is described using a coil assembly in an electromagnetic relay as an example, as those skilled in the art will anticipate, this coil assembly can be applied to other switching devices, such as contactors.

[0030] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A coil assembly of a switch device, comprising a coil frame, a coil winding, and a terminal, the coil winding being mounted to the coil frame, the coil winding having a coil winding head, the coil winding head being wound around the terminal, thereby making the coil winding electrically connected to the terminal, the terminal including a first end and a second end facing away from each other, the coil frame being provided with a terminal hole for receiving the first end of the terminal, the terminal being fitted to the terminal hole, characterized in that, The coil holder is provided with a winding head accommodating slot on an extending path of the second end of the terminal from the opening of the terminal hole, and the winding head accommodating slot is used for avoiding the coil winding head.

2. The coil assembly of claim 1, wherein: The coil holder comprises a first base at one end of the coil winding, and the winding head accommodating slot is provided on the first base, the first base comprises a downward lower bottom surface, and the winding head accommodating slot has at least a bottom surface opening facing the lower bottom surface.

3. The coil assembly of claim 2, wherein: The first base further comprises an inner side surface facing the coil winding, and the winding head accommodating slot extends from the inner side surface of the first base to the lower bottom surface, and the winding head accommodating slot forms an inner side opening facing the inner side surface and a bottom surface opening facing the lower bottom surface on the first base.

4. The coil assembly of claim 3, wherein: The inner side opening and the bottom surface opening are directly communicated.

5. The coil assembly of any of claims 1-4, wherein: The wall surface of the winding head accommodating slot is composed of multiple groups of planes, and the connecting edges of adjacent planes are provided with rounded corners.

6. The coil assembly of claim 2, wherein: The coil holder further comprises a second base at the other end of the coil winding, and the coil winding is installed between the first base and the second base.

7. The coil assembly of claim 1, wherein: The terminal is an elongated rod structure.

8. The coil assembly of claim 1, wherein: The first end of the terminal is assembled in the matched terminal hole by insertion.

9. A switchgear, characterized by A coil assembly of a switch device comprising the coil holder according to any one of claims 1-8.

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