Coil assembly and electromagnetic device

Abstract

The embodiments of the present disclosure provide a coil assembly and an electromagnetic device. The coil assembly comprises a coil skeleton and a coil. The coil skeleton has a head portion, and the head portion is provided with a wire routing portion, and the wire routing portion forms a wire routing channel. The coil is sleeved on the coil skeleton, and a wire of the coil is limited to extend to a connecting terminal along the wire routing channel; wherein the wire forms a redundant section between the connecting terminal and the wire routing channel, and the redundant section is used for straightening to buffer a pulling force received by the wire. The electromagnetic device comprises the coil assembly. In the embodiments of the present disclosure, when the connecting terminal pulls the wire due to a large vibration amplitude, the redundant section can offset the pulling force of the connecting terminal on the wire through its own deformation, thereby avoiding the wire from being broken due to the pulling of external force, and further avoiding the coil assembly from being unable to work normally due to the coil being damaged.

Description

Technical Field

[0001] This disclosure relates to the field of electromagnetic equipment technology, and more particularly to coil assemblies and electromagnetic devices. Background Technology

[0002] A coil typically refers to a loop of wire winding. The most common applications of coils include motors, inductors, transformers, and loop antennas. In a circuit, a coil refers to an inductor. An inductor is a series of wires wound together, insulated from each other. The insulating tube can be hollow or contain an iron core or magnetic powder core; it is simply called an inductor.

[0003] In related technologies, when a coil is assembled onto an insulating frame, the coil's wires are typically arranged within a designated area of ​​the insulating frame to prevent contact or tangling between the wires. However, this can lead to significant vibration deformation of the connecting terminals on the insulating frame during operation. The vibration of these terminals can pull on the wires, causing them to snap due to excessive stress from tautness. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this disclosure is to provide coil assemblies and electromagnetic devices to solve the problems in the related art.

[0005] The first aspect of this disclosure provides a coil assembly, including:

[0006] A coil frame has a head, the head being provided with a wiring section forming a wiring channel;

[0007] A coil is fitted onto the coil frame, and its wires are restricted from extending along the wiring channel to the connection terminal.

[0008] The conductor forms a redundant section between the connection terminal and the wiring channel to straighten it and buffer the tensile force on the conductor.

[0009] In an embodiment of the first aspect, the redundant segment is implemented as at least one of a polyline, a curve, or a spiral.

[0010] In an embodiment of the first aspect, the redundant segment is formed on the conductor in a region near the connection terminal.

[0011] In an embodiment of the first aspect, the wiring section includes a wiring groove, a wire-blocking post, and a guide block; the wiring channel is composed of the groove wall of the wiring groove, the wire-blocking post, and a portion of the wall surface of the guide block.

[0012] In an embodiment of the first aspect, the wire stop post is inclined with its top end closer to the connection terminal, and the wire is wound around the wire stop post away from the wall of the connection terminal; wherein, when the redundant section is in a taut state, the wire can slide off the wire stop post.

[0013] In an embodiment of the first aspect, the dimensions of the wiring trough are adapted to the dimensions of the conductor.

[0014] In the first aspect of the embodiment, the wire passes sequentially through the wiring groove, the wire-blocking post, and the guide block.

[0015] In a first aspect embodiment, the connecting terminal is fixedly connected to the coil frame during the injection molding of the coil frame.

[0016] In an embodiment of the first aspect, a magnetic conductive sheet is further included; the magnetic conductive sheet is fixedly connected to the coil frame during the injection molding of the coil frame and is located above the coil.

[0017] A second aspect of this disclosure provides an electromagnetic device, including the coil assembly.

[0018] As described above, embodiments of this disclosure provide a coil assembly and an electromagnetic device. The coil assembly includes a coil frame and a coil. The coil frame has a head, and the head has a wiring portion forming a wiring channel. The coil is sleeved on the coil frame, and its conductor is restricted to extend along the wiring channel to a connecting terminal; wherein, the conductor forms a redundant section between the connecting terminal and the wiring channel to straighten and buffer the tensile force on the conductor. The electromagnetic device includes the coil assembly. In this embodiment, the redundant section can offset the tensile force exerted on the conductor by the connecting terminal through its own deformation when the connecting terminal pulls the conductor due to large vibration amplitude, thereby preventing the conductor from breaking due to external force, and thus preventing the coil assembly from malfunctioning due to coil damage. Attached Figure Description

[0019] Figure 1 The diagram shown is a schematic representation of the overall structure of the coil assembly in an embodiment of this disclosure;

[0020] Figure 2 The diagram shown is a schematic representation of the coil structure in an embodiment of this disclosure;

[0021] Figure 3 The diagram shown is a schematic diagram of the second embodiment of the redundant segment in this disclosure;

[0022] Figure 4 The diagram shown is a schematic diagram of the third embodiment of the redundant section in this disclosure;

[0023] Figure 5 The diagram shown is a schematic diagram of the fourth embodiment of the redundant segment in this disclosure;

[0024] Figure 6 The diagram shown is a schematic diagram of the coil frame structure in an embodiment of this disclosure;

[0025] Figure 7 The diagram shown is a cross-sectional view of the overall structure of the coil assembly in an embodiment of this disclosure;

[0026] Figure 8 The diagram shown is a cross-sectional view of the overall structure of the coil assembly in an embodiment of this disclosure from another perspective;

[0027] Figure 9 The diagram shown is a schematic diagram of the structure of the magnetic conductive sheet in an embodiment of this disclosure.

[0028] Figure label:

[0029] 10. Coil frame; 11. Head; 111. Wiring section; 1111. Wiring channel; 1112. Wiring groove; 1113. Wire stop post; 1114. Guide block; 112. Terminal block; 1121. First mating hole; 1122. Wiring claw; 101. Mounting area;

[0030] 20. Coil; 21. Wire; 211. Redundant section; 201. Connecting cavity;

[0031] 30. Magnetic conductive sheet; 301. Second mating hole. Detailed Implementation

[0032] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the information disclosed herein. This disclosure can also be implemented or applied through other different specific embodiments, and various details in this disclosure can be modified or changed according to different viewpoints and application modules without departing from the spirit of this disclosure. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be combined with each other.

[0033] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, so that those skilled in the art to which this disclosure pertains can readily implement it. This disclosure may be embodied in many different forms and is not limited to the embodiments described herein.

[0034] In this disclosure, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in any one or a group of embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples represented in this disclosure, as well as the features of those different embodiments or examples.

[0035] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this disclosure, "a set" means two or more, unless otherwise explicitly specified.

[0036] For the purpose of clarity, devices unrelated to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0037] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0038] While the terms first, second, etc., are used in some examples herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, step, operation, element, module, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, modules, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0039] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this disclosure. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in this specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0040] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the message of the present disclosure, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0041] A coil typically refers to a loop of wire winding. The most common applications of coils include motors, inductors, transformers, and loop antennas. In a circuit, a coil refers to an inductor. An inductor is a series of wires wound together, insulated from each other. The insulating tube can be hollow or contain an iron core or magnetic powder core; it is simply called an inductor.

[0042] In related technologies, when a coil is assembled onto an insulating frame, the coil's wires are typically arranged within a designated area of ​​the insulating frame to prevent contact or tangling between the wires. However, this can lead to significant vibration deformation of the connecting terminals on the insulating frame during operation. The vibration of these terminals can pull on the wires, causing them to snap due to excessive stress from tautness.

[0043] Based on the above problems, the redundant segment in this embodiment can offset the pulling force of the connecting terminal on the wire by its own deformation when the connecting terminal pulls the wire due to large vibration amplitude, thereby avoiding the wire from breaking due to external pulling force, and thus avoiding the coil assembly from failing to work properly due to coil damage.

[0044] Figure 1 The diagram shown is a schematic diagram of the overall structure of the coil assembly in an embodiment of this disclosure. Figure 2 The diagram shown is a schematic representation of the coil structure in an embodiment of this disclosure. Figure 1 and Figure 2In the example, the coil assembly includes a coil frame 10 and a coil 20. The coil frame 10 has a head 11 with a wiring portion 111 forming a wiring channel. The coil 20 is fitted onto the coil frame 10, and its conductor 21 is restricted to extend along the wiring channel to a connecting terminal 112; wherein the conductor 21 forms a redundant section 211 between the connecting terminal 112 and the wiring channel to straighten and buffer the tensile force on the conductor 21.

[0045] For example, the redundant segment 211 is implemented as a non-linear segment, such as a curved segment, a broken line segment, an arc segment, or a spiral segment. The straightening is an intermediate state from the curved segment, broken line segment, arc segment, or spiral segment to the straight line segment.

[0046] Therefore, those skilled in the art will understand that when the connecting terminal 112 pulls the wire 21 due to a large amplitude vibration, the end of the wire 21 connected to the connecting terminal 112 will pull the redundant segment 211. The redundant segment 211 is stretched and tends to straighten, thereby buffering the pulling force of the connecting terminal 112 on the wire 21. This prevents the wire 21 from becoming completely taut due to external force and breaking, and avoids the coil assembly from failing to work properly due to the breakage of the coil 20. In this process, the end of the redundant segment 211 near the connecting terminal 112 straightens first, and then drives the entire redundant segment 211 to straighten.

[0047] Secondly, the redundant segment 211 can further improve its effectiveness by using the straightening buffer to prevent the pulling on the conductor 21 caused by the movement of the coil 20. In this process, the end of the redundant segment 211 closest to the coil 20 straightens first, and then drives the entire redundant segment 211 to straighten.

[0048] Those skilled in the art will understand that the extension length of the redundant segment 211 is configured to ensure that the entire conductor 21 is not taut after straightening, further preventing the conductor 21 from breaking. For example, when the length of the terminal 112 is large, the extension length of the redundant segment 211 increases accordingly. This is because the longer the terminal 112 is, the greater the amplitude of its end swing when subjected to vibration, which means that the pulling force exerted by the terminal 112 on the conductor 21 during swing is greater, and the amplitude of the pull is also greater. If the length of the extension of the redundant segment 211 does not match the length of the terminal 112, the conductor 21 may still break due to being pulled by the terminal 112 after the redundant segment 211 is straightened.

[0049] exist Figure 1 In the example, the redundant segment 211 is formed on the conductor 21 in the region near the connecting terminal 112. The advantage of this arrangement is that by shortening the distance between the connecting terminal 112 and the redundant segment 211, the length of the conductor 21 between the connecting terminal 112 and the redundant segment 211 is shortened. This avoids applying excessive tensile force to the conductor 21 when the connecting terminal 112 vibrates and swings, further reducing damage to the conductor 21.

[0050] For example, the redundant segment 211 is formed on the line segment of the conductor 21 located between the wiring channel and the connection terminal 112. The advantage of this arrangement is that the redundant segment 211 can buffer some of the pulling force acting on the conductor 21 in the early stage by straightening it, reducing the probability that the conductor 21 will slip off the wire stop post 1112 due to direct pulling force in the early stage, thereby avoiding the conductor 21 being in a messy state in the early stage.

[0051] For example, the connection terminal 112 is located at the head 11 of the coil frame 10.

[0052] For example, the redundant segment 211 is a portion of the conductor 21. Further for example, the extension of the redundant segment 211 is implemented as at least one of a broken line, a curve, or a spiral.

[0053] In other embodiments, each conductor 21 may also be configured to have a plurality of redundant segments 211, which are arranged sequentially along the extension direction of the conductor 21. For example, each conductor 21 may also be configured to have two redundant segments 211. When the conductor 21 is pulled by the terminal 112, the redundant segment 211 closer to the terminal 112 straightens first, and then drives the other redundant segment 211 to straighten; when the conductor 21 is pulled by the coil 20, the redundant segment 211 closer to the coil 20 straightens first, and then drives the other redundant segment 211 to straighten.

[0054] In other embodiments, due to the different properties of the conductors 21 (e.g., material, hardness, etc.), the two redundant segments 211 may also be in the straightening state simultaneously, and are not limited to the above.

[0055] Figure 2 The example shown is a first embodiment of the coil structure. Figure 2 In the example, the extension line of the redundant segment 211 is a curve.

[0056] Figure 3The diagram shown is a schematic representation of a second embodiment of the redundant segment in this disclosure. Figure 3 In the example, the extension line of the redundant segment 211 is a broken line.

[0057] Figure 4 The diagram shown is a schematic representation of the third embodiment of the redundant section in this disclosure. Figure 4 In the example, the extension line of the redundant segment 211 is a spiral. Those skilled in the art will understand that the redundant segment 211, which is implemented in a spiral shape, is similar to a spring, and therefore can not only buffer the tension force on the conductor 21, but also allow the conductor 21 to return to its original shape when the tension force on the conductor 21 stops, thereby effectively buffering the next time.

[0058] Those skilled in the art will understand that the implementation style of the redundant segment 211 extension line can be determined based on specific installation environment (e.g., space, location) and other factors.

[0059] Figure 5 The diagram shown is a schematic representation of the fourth embodiment of the redundant segment in this disclosure. Figure 5 In the example, the extension lines of the redundant segment 211 are both broken lines and curves.

[0060] Figure 6 The diagram shown is a schematic representation of the coil frame structure in an embodiment of this disclosure. Figure 6 In the example, the coil frame 10 includes a mounting area 101 for mounting the coil 20. (This is in conjunction with...) Figure 3 As can be seen from the example, the coil 20 includes a mating cavity 201 for fitting with the coil frame 10. Those skilled in the art will understand that the coil frame 10 is injection molded, therefore the coil 20 is implemented such that it is fitted onto the coil frame 10 during injection molding.

[0061] exist Figure 6 In the example, the wiring section 111 includes a wiring groove 1111, a wire blocking post 1112, and a guide block 1113; the wiring channel is composed of the groove wall of the wiring groove 1111, a portion of the wall surface of the wire blocking post 1112, and the guide block 1113.

[0062] Exemplarily, the dimensions of the wiring groove 1111 are adapted to the dimensions of the conductor 21. For example, the dimensions of the wiring groove 1111 are configured such that the conductor 21 can slide within the wiring groove 1111, allowing the conductor 21 to flow along the wiring groove 1111 toward the connection terminal 112 when straightening. Exemplarily, the extension line of the wiring groove 1111 is implemented as at least one of a straight line or a curve.

[0063] For example, the wire stop post 1112 is inclined with its top end closer to the connection terminal 112, and the wire 21 is wound around the wall of the wire stop post 1112 away from the connection terminal 112; wherein, when the redundant section 211 is in a taut state, the wire 21 can slide off the wire stop post 1112.

[0064] As a further example, the wire-blocking post 1112 is implemented as a cylinder, and the wall surface is implemented as an arc-shaped surface, so that the conductor 21 can slide along the wire-blocking post 1112 when it is straight, and when the redundant segment 211 is in a taut state, the conductor 21 can smoothly slide off the wire-blocking post 1112 along the inclined wall surface.

[0065] In another embodiment, the wire-blocking post 1112 can also be implemented as a rectangle or a triangle. It should be noted that when the wire-blocking post 1112 is implemented as a rectangle or a triangle, the corners of the wire-blocking post 1112 are rounded to avoid damage to the conductor 21.

[0066] Depend on Figure 6 As can be seen from the example, the wire 21 passes through the wiring groove 1111, the wire blocking post 1112 and the guide block 1113 in sequence.

[0067] exist Figure 1 In this example, both the wire 21 and the connecting terminal 112 are implemented in pairs. Figure 6 In the example, the wiring section 111 is implemented as two symmetrically arranged. Preferably, the two wiring grooves 1111 are formed in the area between the two connecting terminals 112 on the coil frame 10. The advantage of this arrangement is that it can reduce the opening length of the wiring grooves 1111, reducing the injection molding difficulty; and it can also increase the forming length of the redundant section 211 by reducing the winding distance of the wire 21 on the coil frame 10, thereby further improving the buffering effect of the redundant section 211.

[0068] Figure 7 The diagram shown is a cross-sectional view of the overall structure of the coil assembly in an embodiment of this disclosure. Figure 7In the example, the two connecting terminals 112 are fixedly connected to the coil frame 10 during injection molding. Exemplarily, the portion of the connecting terminal 112 located within the coil frame 10 forms at least one first engaging hole 1121. In this embodiment, two first engaging holes 1121 are implemented. Those skilled in the art will understand that the two first engaging holes 1121, combined with the injection-molded coil frame 10, can prevent the connecting terminal 112 from rotating while remaining connected to the coil frame 10. When the coil frame 10 is injection molded, the injection molding material penetrates the first engaging hole 1121 and forms a first engaging post to increase the bonding strength between the connecting terminal 112 and the coil frame 10, preventing the connecting terminal 112 from detaching from the coil frame 10. In another embodiment, the first engaging hole 1121 can also be implemented as a single hole with a rectangular cross-section.

[0069] exist Figure 1 and Figure 7 In the example, the connection terminal 112 includes a terminal claw 1122 extending from the top, and one end of the wire 21 is fixedly connected to the terminal claw 1122, for example, by soldering.

[0070] Figure 8 The diagram shown is a cross-sectional view of the overall structure of the coil assembly in an embodiment of this disclosure from another perspective. Figure 9 The diagram shown is a schematic representation of the structure of the magnetic conductive sheet 30 in an embodiment of this disclosure. Figure 8 and Figure 9 In the example, the coil assembly further includes a magnetic sheet 30; the magnetic sheet 30 is fixedly connected to the coil frame 10 during injection molding. For example, the magnetic sheet 30 is provided with a pair of second coupling holes 301. When the coil frame 10 is injection molded, the injection molding material passes through the two second coupling holes 301 and forms two second coupling posts to improve the bonding strength between the connecting terminal 112 and the coil frame 10, and to prevent the magnetic sheet 30 from separating from the coil frame 10 when the coil frame 10 is demolded.

[0071] exist Figure 7 and Figure 8 In the example, the first connecting hole 1121 and the second connecting hole 301 are both used to improve the assembly accuracy of the magnetic conductive sheet 30 and the terminal block 112 with the coil frame 10.

[0072] Another embodiment of this disclosure provides an electromagnetic device including the coil assembly.

[0073] In summary, this disclosure provides a coil assembly and an electromagnetic device. The coil assembly includes a coil frame and a coil. The coil frame has a head with a wiring portion forming a wiring channel. The coil is fitted onto the coil frame, and its conductor is restricted to extend along the wiring channel to a connecting terminal; wherein, the conductor forms a redundant section between the connecting terminal and the wiring channel to straighten and buffer the tensile force on the conductor. The electromagnetic device includes the coil assembly. In this disclosure, the redundant section can offset the tensile force exerted on the conductor by the connecting terminal through its own deformation when the connecting terminal pulls the conductor due to large vibration amplitude, thereby preventing the conductor from breaking due to external force and thus preventing the coil assembly from malfunctioning due to coil damage.

[0074] The above embodiments are merely illustrative of the principles and effects of this disclosure and are not intended to limit this disclosure. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this disclosure. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this disclosure should still be covered by the protection scope of this disclosure.

Claims

1. A coil assembly, characterized in that, include: A coil frame has a head, the head being provided with a wiring section forming a wiring channel; A coil is fitted onto the coil frame, and its wires are restricted from extending along the wiring channel to the connection terminal. The conductor forms a redundant section between the connection terminal and the wiring channel to straighten it and buffer the tensile force on the conductor.

2. The coil assembly according to claim 1, characterized in that, The redundant segment is implemented as at least one of a polyline, a curve, or a spiral.

3. The coil assembly according to claim 1, characterized in that, The redundant segment is formed on the conductor in the region near the connection terminal.

4. The coil assembly according to claim 1, characterized in that, The cable routing section includes a cable routing groove, a cable blocking post, and a guide block; the cable routing channel is composed of the groove wall of the cable routing groove, the cable blocking post, and part of the wall surface of the guide block.

5. The coil assembly according to claim 4, characterized in that, The wire stop post is inclined with its top closer to the connection terminal, and the wire is wound around the wire stop post away from the wall of the connection terminal; wherein, when the redundant section is in a taut state, the wire can slide off the wire stop post.

6. The coil assembly according to claim 4, characterized in that, The dimensions of the wiring trough are adapted to the dimensions of the conductor.

7. The coil assembly according to claim 4, characterized in that, The conductor passes sequentially through the cable tray, the cable stop post, and the guide block.

8. The coil assembly according to claim 1, characterized in that, The connecting terminal is fixedly connected to the coil frame during the injection molding of the coil frame.

9. The coil assembly according to claim 1, characterized in that, It also includes a magnetic conductive sheet; the magnetic conductive sheet is fixedly connected to the coil frame during the injection molding of the coil frame and is located above the coil.

10. An electromagnetic device, characterized in that, include: The coil assembly as described in any one of claims 1-9.

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