Module for winding relay coil
By designing a relay coil winding module with a closed cut, guide surface, and limiting structure for the barbed part, the problems of plastic debris and wire scratches during coil winding are solved, improving the reliability and quality of coil winding and extending the service life of the mold core.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUEQING MEISHUO ELECTRIC
- Filing Date
- 2025-04-25
- Publication Date
- 2026-05-26
AI Technical Summary
In existing technologies, defects such as plastic debris and wire scratches are easily generated during the coil winding process, which can lead to fatal defects in relays during operation, such as failure to conduct when the relay is engaged, failure of the contacts to conduct, and poor withstand voltage, thus affecting the reliability of product quality.
A relay coil winding module is adopted, including a mold sleeve, a mold head, a mold core and a spring pressure plate. The mold core is provided with a barb and a cut. The front end of the barb is closed and a guide surface and a support surface are provided. The mold head is provided with a limiting post and a limiting foot to form a guide and radial limit, thereby improving the fixation of the coil frame and the winding quality.
It effectively prevents plastic shavings from entering the cut, avoids coil frame cracking, improves processing efficiency, ensures the reliability and quality of the coil winding process, extends the service life of the mold core, and enhances the fixation and guiding effect of the coil frame.
Smart Images
Figure CN224288006U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of processing equipment technology, specifically to a module for winding relay coils. Background Technology
[0002] As electronic components become more and more mature, the requirements for electronic components are becoming higher and higher. At present, the quality of coil winding of electronic components in the industry is also constantly improving. However, the reliability and quality requirements of coil winding do not allow for scratches, cracks, damage and plastic debris on the coil frame. Otherwise, it will affect the relay during operation and produce fatal defects such as non-conductivity, non-conductivity of contacts and poor withstand voltage.
[0003] Currently, the industry uses perforated steel wire compression mold cores and center-grooved compression mold cores.
[0004] For example, during the processing of a center-grooved spring-loaded mold core, if plastic shavings (the coil frame is made of plastic and plastic shavings will be generated during the positioning and fixing process) enter the groove, they will block the spring-loaded groove, causing the spring-loaded plate to expand. When the coil frame is inserted into the mold core, the iron core hole of the coil frame will be directly cracked, which can easily cause abnormal pressure resistance.
[0005] For example, during the processing of wire-perforated die cores, after the coil frame is inserted into the die core, 100% of the coil frame will have wire imprints or scratches, which may lead to poor pressure resistance and threaten the reliability of product quality. Utility Model Content
[0006] Therefore, the technical problem to be solved by this utility model is how to improve the quality of coil winding. To this end, a module for winding relay coils includes:
[0007] Mold;
[0008] A mold head, one end of which is connected to the mold sleeve;
[0009] A mold core is connected to the other end of the mold head. The mold core has a cut that divides the mold core into at least two spring-loaded pieces. One of the spring-loaded pieces has a barb fixed to it, and the barb is located at the front end of the cut.
[0010] The barb portion is provided with a first guide surface.
[0011] The barb portion has a first chamfered surface facing the front end of the cut.
[0012] The connection between the barb and the spring-loaded sheet is provided with a support surface.
[0013] The spring pressure plate has a convex portion.
[0014] The spring-loaded sheet has a relief surface.
[0015] The mold core includes a first fixing part, a neck, and an elastic part. The neck connects the first fixing part and the elastic part. The first fixing part is connected to the mold head. The spring pressure plate is disposed on the elastic part. The diameter of the neck is smaller than the diameter of the first fixing part. The diameter of the neck is smaller than the diameter at the connection point with the elastic part.
[0016] The die head is provided with a limiting post and a first fixing hole. The first fixing hole passes through the limiting post, and the first fixing part is partially embedded in the first fixing hole.
[0017] The die head is provided with a limiting foot, which restricts the radial rotation of the coil frame.
[0018] The mold sleeve is provided with a second fixing hole, and the mold head portion is embedded into the second fixing hole.
[0019] The technical solution of this utility model has the following advantages:
[0020] 1. The present invention provides a relay coil winding module with a barb portion forming a closed front end of the cut, preventing plastic debris from entering the cut and affecting the fit between the mold core and the coil frame; this structure makes the coil frame less prone to cracking during the winding process, thus improving processing efficiency.
[0021] 2. The relay coil winding module provided by this utility model has a first guide surface that forms a guide structure, enabling the barb portion and the coil frame to form a guiding effect during their engagement. Alternatively, the guide structure can also be provided on the coil frame.
[0022] 3. The present invention provides a relay coil winding module, wherein the first chamfered surface is used to prevent the barb part from scratching the coil frame during the demolding process, and serves as a guide.
[0023] 4. The relay coil winding module provided by this utility model has a support surface that improves strength and makes the connection between the barb and the spring pressure plate more stable.
[0024] 5. The present invention provides a relay coil winding module, wherein the outer side wall of the convex portion is used to support the coil frame, thereby increasing the strength of the spring pressure plate and preventing the spring pressure plate from shrinking or deforming during the coil winding process.
[0025] 6. This utility model provides a relay coil winding module with a clearance surface to prevent the core diameter from being too large, thus preventing the coil holder from being inserted. This clearance surface is an axially oriented plane.
[0026] 7. This utility model provides a relay coil winding module, where the neck and cutout fit together to increase the spring-loaded flexibility of the mold core. In this embodiment, the first fixing part is solid to prevent the spring-loaded sheet from failing, and at the same time serves to allow the mold core to pass through the mold head and be effectively fixed with screws.
[0027] 8. The relay coil winding module provided by this utility model has a limiting post that forms an axial limit, and the coil frame can be better fixed.
[0028] 9. This utility model provides a relay coil winding module, in which limiting feet form radial limiting, which, together with the elastic expansion of the spring pressure plate, firmly fixes the coil frame. Specifically, the limiting feet abut against one end of the coil frame. In this embodiment, there are two limiting feet, which abut against both sides of one end of the coil frame to form radial fixation.
[0029] 10. This utility model provides a relay coil winding module, in which the die head and die sleeve are fixed together to improve the connection strength. Alternatively, a screw can be used to radially pass through the die sleeve and abut against the die head to achieve a fastening effect. Besides this, the die sleeve and die head can also be fixed by other methods, such as welding or snap-fit connections. Attached Figure Description
[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0031] Figure 1 A schematic diagram of the structure of the relay coil winding module provided by this utility model;
[0032] Figure 2 A partial structural schematic diagram of the relay coil winding module provided by this utility model;
[0033] Figure 3 A cross-sectional view of the relay coil winding module and coil frame provided by this utility model.
[0034] Explanation of reference numerals in the attached figures:
[0035] 11. Mold sleeve; 12. Mold head; 13. Mold core; 14. First spring pressure plate; 15. Second spring pressure plate; 16. Barb part; 17. Coil frame; 111. Second fixing hole; 121. Limiting post; 122. First fixing hole; 123. Limiting support foot; 131. Cutout; 132. First fixing part; 133. Neck; 134. Elastic part; 141. Protrusion part; 142. Leaving surface; 161. First guide surface; 162. First chamfered surface; 163. Support surface. Detailed Implementation
[0036] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0037] In the description of this utility model, it should be noted that 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 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 based on the specific circumstances.
[0039] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0040] Example 1
[0041] This embodiment provides a module for winding relay coils, as shown in the attached diagram. Figures 1-3 As shown, it includes:
[0042] The mold sleeve 11 is used to cooperate with the drive source (motor or hydraulic cylinder, etc.) to realize the rotation of the mold sleeve 11; the mold sleeve 11 can also be connected and fixed to the winding frame to form a static fixed state, and the winding device of the winding equipment performs winding.
[0043] The mold head 12 is connected at one end to the mold sleeve 11. The connection between the mold head 12 and the mold sleeve 11 can be a screw connection, a snap-fit connection, or a welding connection. Those skilled in the art can adjust it according to actual needs.
[0044] The mold core 13 is connected to the other end of the mold head 12. This connection can be achieved via screws, snap-fit connections, or welding. The mold core 13 has a cut 131 that divides it into at least two spring-loaded plates. The number of spring-loaded plates can be two, three, or more. In this embodiment, two spring-loaded plates are used as an example. For better description, the spring-loaded plate with the barb 16 is designated as the first spring-loaded plate 14, and the other spring-loaded plate is designated as the second spring-loaded plate 15. In this embodiment, the cut 131 does not axially penetrate the entire mold core 13; that is, the end of the cut 131 is closed, and the front end of the cut 131 opens upwards. The barb 16 is located at the front end of the cut 131, forming a closed effect at the front end to prevent plastic debris from entering the cut 131 and affecting the fit between the mold core 13 and the coil frame 17. With this structure, the coil frame 17 is less likely to crack during the winding process, which improves processing efficiency and extends the service life of the mold core 13.
[0045] Specifically, as shown in the attached document Figures 1-3 As shown, the barb portion 16 is provided with a first guide surface 161. The first guide surface 161 forms a guide structure, so that the barb portion 16 and the coil frame 17 form a guiding effect during the cooperation process. In this embodiment, the front end of the barb portion 16 is frustum-shaped, forming a front-small-back-large effect, and the first guide surface 161 is the outer wall of the frustum. In addition, the guide structure can also be provided on the coil frame 17.
[0046] Specifically, as shown in the attached document Figures 1-3 As shown, the barb portion 16 has a first chamfered surface 162 facing the front end of the cutout 131. The first chamfered surface 162 is used to prevent the barb portion 16 from scratching the coil frame 17 during demolding, and serves as a guide. In this embodiment, the first chamfered surface 162 is an arc surface.
[0047] Specifically, as shown in the attached document Figures 1-3As shown, a support surface 163 is provided at the connection between the barb portion 16 and the first spring pressure plate 14. The support surface 163 improves strength and makes the connection between the barb portion 16 and the spring pressure plate more stable. In this embodiment, the support surface 163 is a convex arc surface.
[0048] Specifically, the spring pressure plate has a protruding portion 141. The outer wall of the protruding portion 141 is used to support the coil frame 17, improve the strength of the spring pressure plate, and prevent the spring pressure plate from shrinking and deforming during coil winding. Here, both the first spring pressure plate 14 and the second spring pressure plate 15 have protruding portions 141.
[0049] Specifically, as shown in the attached document Figures 1-3 As shown, the spring pressure plate has a clearance surface 142. The clearance surface 142 prevents the diameter of the mold core 13 from being too large, which would prevent the coil frame 17 from passing through. Here, the clearance surface 142 is an axially oriented plane. Here, both the first spring pressure plate 14 and the second spring pressure plate 15 have clearance surfaces 142. In this embodiment, the clearance surface 142 is located on the outer side of the convex portion 141. The axial projection formed by the conventional spring pressure plate is circular. In this embodiment, the axial projection formed by the two spring pressure plates is racetrack-shaped, and the clearance surface 142 forms the two long sides of the racetrack shape.
[0050] Specifically, as shown in the attached document Figures 1-3 As shown, in this embodiment, the barb portion 16 is specifically connected to the front end of the first spring pressure plate 14, and the barb portion 16 has a frustoconical structure, extending radially toward the front end of the second spring pressure plate 15, but not exceeding the outer surface of the second spring pressure plate 15. The barb portion 16 can abut against the front end of the second spring pressure plate 15, or a gap can be provided between the barb portion 16 and the front end of the second spring pressure plate 15, in which case the barb portion 16 and the front end of the cut 131 cooperate to form a lateral opening. Those skilled in the art can adjust according to actual needs. The diameter of the entire mold core 13 front end is the smallest, and the diameter formed at the connection between the barb portion 16 and the cut 131 is also smaller than the diameter formed by the two spring pressure plates, so that the coil frame 17 can be fitted onto the mold core 13.
[0051] Specifically, as shown in the attached document Figures 1-3As shown, the mold core 13 includes a first fixing part 132, a neck 133, and an elastic part 134. The neck 133 connects the first fixing part 132 and the elastic part 134. In this embodiment, the end of the cut 131 extends to a part of the neck 133, and the front end of the cut 131 extends along the elastic part 134 until it reaches the position of the barb 16. The first fixing part 132 is connected to the mold head 12. In this embodiment, the first fixing part 132 is solid to prevent the spring pressure plate from failing. The spring pressure plate is disposed on the elastic part 134. The first spring pressure plate 14, the second spring pressure plate 15, and the barb 16 cooperate to form the elastic part 134. The diameter of the neck 133 is smaller than the diameter of the first fixing part 132; the diameter of the neck 133 is smaller than the diameter at the connection with the elastic part 134. At this time, the neck 133 forms a narrow structure, and the elastic part 134 and the first fixing part 132 both shrink towards the neck 133. The neck 133 and the cut 131 work together to increase the elastic flexibility of the mold core 13.
[0052] Specifically, as shown in the attached document Figures 1-3 As shown, the barb portion 16 and the first spring pressure plate 14 are integrally formed. Furthermore, the mold core 13 is integrally formed, and the entire core is made of the same material and processed in the same way.
[0053] Specifically, as shown in the attached document Figures 1-3 As shown, the mold head 12 is provided with a limiting post 121 and a first fixing hole 122. The first fixing hole 122 passes through the limiting post 121, and the first fixing part 132 is partially embedded in the first fixing hole 122. Specifically, the setting of the limiting post 121 forms an axial limit, and the coil frame 17 can be better fixed. After the coil frame 17 passes through the mold core 13 and is fixed, the bottom surface of the coil frame 17 will abut against the top surface of the limiting post 121, forming an axial limit.
[0054] Specifically, as shown in the attached document Figures 1-3 As shown, the first fixing part 132 and the mold head 12 are fixed together by screws. Specifically, when the first fixing part 132 is partially inserted into the first fixing hole 122, the screws radially pass through the mold head 12 and abut against the outer wall of the first fixing part 132, forming a connection between the mold head 12 and the mold core 13. Alternatively, the mold head 12 and the first fixing part 132 can also be connected by snap-fit or by welding.
[0055] Specifically, as shown in the attached document Figures 1-3 As shown, the die head 12 is provided with limiting feet 123, which restrict the radial rotation of the coil frame 17. The limiting feet 123 form a radial limit, which, together with the elastic expansion of the spring pressure plate, firmly fixes the coil frame 17. Specifically, the limiting feet 123 abut against the lower end of the coil frame 17. In this embodiment, there are two limiting feet 123, which abut against the two sides of the lower end of the coil frame 17 respectively, forming a radial fixation.
[0056] Specifically, as shown in the attached document Figures 1-3 As shown, the mold sleeve 11 has a second fixing hole 111, and the mold head 12 is partially embedded into the second fixing hole 111. The mold head 12 is fixed to the mold sleeve 11 to improve the connection strength. Here, a screw can also be used to radially pass through the mold sleeve 11 and abut against the mold head 12 to form a fastening effect. In addition, the mold sleeve 11 and the mold head 12 can also be fixed by other methods, such as welding or snap-fit connection, etc.
[0057] Specifically, in this embodiment, the module is used for positioning and fixing the coil frame 17. A drive source can rotate the entire module, which, in conjunction with the coil, winds the coil around the coil frame 17, creating a processing effect. In this embodiment, the entire winding device is existing technology and therefore will not be described in detail.
[0058] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A module for winding a relay coil, characterized in that, include, Mold (11); A mold head (12), one end of which is connected to the mold sleeve (11); The mold core (13) is connected to the other end of the mold head (12). The mold core (13) has a cut (131) that divides the mold core (13) into at least two spring pressure plates. One of the spring pressure plates is fixed with a barb (16) located at the front end of the cut (131).
2. The relay coil winding module according to claim 1, characterized in that, The barb portion (16) is provided with a first guide surface (161).
3. The relay coil winding module according to claim 1, characterized in that, The barb portion (16) has a first chamfered surface (162) facing the front end of the cut (131).
4. The relay coil winding module according to claim 1, characterized in that, The connection between the barb (16) and the spring sheet is provided with a support surface (163).
5. The relay coil winding module according to claim 1, characterized in that, The spring pressure plate is provided with a convex portion (141).
6. The relay coil winding module according to claim 1, characterized in that, The spring-loaded sheet is provided with a relief surface (142).
7. The relay coil winding module according to claim 1, characterized in that, The mold core (13) includes a first fixing part (132), a neck (133) and an elastic part (134). The neck (133) connects the first fixing part (132) and the elastic part (134). The first fixing part (132) is connected to the mold head (12). The elastic pressure plate is disposed on the elastic part (134). The diameter of the neck (133) is smaller than the diameter of the first fixing part (132). The diameter of the neck (133) is smaller than the diameter at the connection with the elastic part (134).
8. The relay coil winding module according to claim 7, characterized in that, The mold head (12) is provided with a limiting post (121) and a first fixing hole (122). The first fixing hole (122) passes through the limiting post (121) and the first fixing part (132) is partially embedded in the first fixing hole (122).
9. The relay coil winding module according to claim 1, characterized in that, The mold head (12) is provided with a limiting foot (123), which limits the radial rotation of the coil frame (17).
10. The relay coil winding module according to claim 1, characterized in that, The mold sleeve (11) is provided with a second fixing hole (111), and the mold head (12) is partially embedded into the second fixing hole (111).