Low-noise electromagnetic coil

Abstract

The utility model relates to the technical field of magnetic line generators, in particular to a low-noise electromagnetic coil which comprises a copper disc coil, a left pressing block and a right pressing block are arranged on the left side and the right side of the copper disc coil respectively, the front side and the rear side of the left pressing block and the front side and the rear side of the right pressing block are fixed through fasteners, and each fastener is composed of a bolt and a nut. The head of the bolt is connected to the outer side of the left pressing block in an embedded buckle mode, external wiring terminals are arranged on the front side and the rear side of the copper disc coil, the thickness of the left pressing block and the thickness of the right pressing block are consistent with the thickness of the copper disc coil, and arc-shaped grooves coaxial with the copper disc coil are formed in the inner side of the left pressing block and the inner side of the right pressing block. The utility model aims to provide the low-noise electromagnetic coil, and aims to realize a fastening structure which effectively reduces the turn-to-turn gap of the coil, improves the curing strength of the coil, reduces the noise of the coil and facilitates the heat dissipation of the coil on the premise of ensuring that the placed coil does not deform.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic line generators, in particular to a low-noise electromagnetic coil. Background Art

[0002] The electromagnetic coil uses a large and changing current transmitted in the coil to generate strong magnetic lines of force. As the current changes, the magnetic lines of force will also change in strength. During this change, the coil will contract and vibrate under the action of the magnetic lines of force, thereby making a responsive sound. This sound is actually the noise of the instrument. If it is not processed, it will often be more than 60 decibels, which will greatly affect the acceptance of the equipment.

[0003] Therefore, in response to this situation, the prior art currently provides patent CN202021915609.9 - a dry-type transformer coil noise reduction pressure plate, which discloses a method of placing a cylindrical shaft in the hollow position in the center of the coil, and fastening the coil with an arc-shaped pressure plate on the outside of the coil, so as to squeeze the coil up and down to ensure that the coil is placed without deformation, effectively reduce the gap between the coil turns, improve the coil curing strength, and reduce the coil noise; however, the coil often generates heat during the power-on process. If it is covered by something above and below, it will lead to the inability to dissipate heat, so there are certain technical defects. Utility Model Content

[0004] The purpose of the utility model is to provide a low-noise electromagnetic coil, aiming to effectively reduce the gap between coil turns while ensuring that the coil is placed without deformation, improve the coil solidification strength, reduce the coil noise, and facilitate the fastening structure of the coil heat dissipation.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A low-noise electromagnetic coil comprises a copper disc coil, wherein a left pressure block and a right pressure block are respectively arranged on the left and right sides of the copper disc coil, and the front and rear sides of the left and right pressure blocks are fixed by fasteners, wherein the fasteners are composed of bolts and nuts, and the heads of the bolts are embedded buckles connected to the outer side of the left pressure block.

[0007] Preferably, external connection terminals are provided on both the front and rear sides of the copper disc coil.

[0008] Preferably, the thickness of the left pressing block and the right pressing block are consistent with the thickness of the copper disc coil, and the inner sides of the left pressing block and the right pressing block are provided with arc grooves coaxial with the copper disc coil.

[0009] Preferably, when the left pressing block and the right pressing block are combined, pre-tightening gaps are provided in the middle of both the front and rear sides.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] In the utility model, a retractable annular set is formed by combining left and right pressure blocks, and the annular set composed of bolts and nuts is continuously pre-tightened to achieve continuous extrusion and limiting of the outer ring of the copper disk coil, so as to reduce the gap between the turns of the coil, improve the solidification strength of the coil, and limit the shrinkage and vibration space of the coil, which can greatly reduce the sound caused by vibration, thereby achieving coil noise; at the same time, the fastening structure of the present application is a coil outer ring sleeve buckle, the coil is not easy to deform during fastening, and there is no obstruction on the upper and lower sides, which does not hinder the upper and lower air circulation, and will not affect the heat dissipation, which is convenient for the application of electromagnetic coil heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front axle view of a low-noise electromagnetic coil of the utility model;

[0013] Figure 2 This is a rear axle view of a low-noise electromagnetic coil of the utility model;

[0014] Figure 3 This is a structural explosion diagram of a low-noise electromagnetic coil of the utility model.

[0015] In the figure: 1. copper disc coil; 11. external terminal; 2. left pressure block; 3. right pressure block; 4. fastener; 41. bolt; 42. nut; 5. pre-tightening gap. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0018] A low-noise electromagnetic coil comprises a copper disc coil 1, which is used to generate magnetic lines of force by current changes, realize electromagnetic induction, and meet the application of electromagnetic coils; a left pressure block 2 and a right pressure block 3 are respectively arranged on the left and right sides of the copper disc coil 1, and the front and rear sides of the left pressure block 2 and the right pressure block 3 are fixed by fasteners 4, and the fasteners 4 are composed of bolts 41 and nuts 42. The left and right pressure blocks are combined to form an annular kit that can be retracted, and the fasteners composed of bolts and nuts are used to continuously pre-tighten the annular kit of the left and right pressure blocks, thereby realizing continuous extrusion and limiting of the outer ring of the copper disc coil, so as to reduce the gap between the coil turns, improve the curing strength of the coil, and limit the shrinkage vibration space of the coil, which can greatly reduce the sound caused by vibration, thereby achieving coil noise; the head of the bolt 41 is an embedded buckle connected to the outside of the left pressure block 2, so as to limit the bolt head when the nut is tightened, so as to facilitate the tightening of the nut.

[0019] In this embodiment, see Figure 3 External connection terminals 11 are provided on both the front and rear sides of the copper disc coil 1 to facilitate external connection of the copper disc coil.

[0020] In this embodiment, see Figure 1 The thickness of the left pressure block 2 and the right pressure block 3 are consistent with the thickness of the copper disc coil 1. The inner sides of the left pressure block 2 and the right pressure block 3 are provided with arc grooves coaxial with the copper disc coil 1 to form an annular set with the same thickness as the outer ring of the copper disc coil to ensure consistent force on the outer ring of the copper disc coil and prevent the coil from being pre-tightened and deformed.

[0021] In this embodiment, see Figure 2 When the left pressing block 2 and the right pressing block 3 are combined, a pre-tightening gap 5 is opened in the middle of the front and rear sides to meet the design of the retractable structure of the annular kit formed by the left and right pressing blocks, ensuring that the coil is fastened in place.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low noise electromagnetic coil, characterized in that: The invention comprises a copper disk coil (1), wherein a left pressure block (2) and a right pressure block (3) are respectively arranged on the left and right sides of the copper disk coil (1), and the front and rear sides of the left pressure block (2) and the right pressure block (3) are fixed by fasteners (4), wherein the fasteners (4) are composed of bolts (41) and nuts (42), and the heads of the bolts (41) are embedded buckles connected to the outer side of the left pressure block (2).

2. A low noise electromagnetic coil according to claim 1, characterized in that: External connection terminals (11) are provided on both the front and rear sides of the copper disc coil (1).

3. A low noise electromagnetic coil according to claim 1, characterized in that: The thickness of the left pressing block (2) and the right pressing block (3) are both consistent with the thickness of the copper disc coil (1), and the inner sides of the left pressing block (2) and the right pressing block (3) are both provided with arc grooves coaxial with the copper disc coil (1).

4. A low noise electromagnetic coil according to claim 1, characterized in that: When the left pressing block (2) and the right pressing block (3) are combined, a pre-tightening gap (5) is provided in the middle of both the front and rear sides.

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