CN221101804U - Lead-out structure of electromagnetic coil and electromagnetic coil - Google Patents

Abstract

The utility model belongs to the technical field of electromagnetism, and discloses a lead-out structure of an electromagnetic coil and the electromagnetic coil. The lead-out structure of the electromagnetic coil comprises a framework, a coil and two inserting sheets, wherein the framework is columnar; the coil comprises a main body and two outgoing lines positioned at two ends of the main body, two inserting sheets are respectively arranged at two ends of the framework, each inserting sheet comprises a connecting part, a winding part and an inserting sheet part which are sequentially connected, the connecting parts are inserted into the framework, the winding parts are arranged at intervals with the main body, and the inserting sheet parts and the winding parts are arranged at an included angle and are used for being connected with the outside; the main part twines in skeleton periphery, and two lead-out wires stretch out from the upper and lower both ends of main part respectively and twine in two kinks respectively, and the lead-out wire is connected with the inserted sheet. The lead-out structure of the electromagnetic coil and the electromagnetic coil are free from paint peeling when the lead is arranged, a sleeve is not required, a jogged piece for fixing an inserting piece is not required to be arranged, the number of parts is reduced, the cost is reduced, and the installation step of the lead structure is simplified.

Description

Lead-out structure of electromagnetic coil and electromagnetic coil

Technical Field

The utility model relates to the technical field of electromagnetism, in particular to a lead-out structure of an electromagnetic coil and the electromagnetic coil.

Background

In the prior art, the inserted-type coil generally adopts a 2' outgoing line structure without fixed enameled wires. As shown in fig. 1, the lead-out structure of the existing electromagnetic coil comprises a framework 1 ', a coil and an inserting sheet 3 ', wherein the coil comprises a main body and two outgoing lines positioned at two ends of the main body, the outgoing lines are relatively close to the coil, the outer parts of the outgoing lines are coated with lacquer skin to form enameled wires 2 ', the free ends of the enameled wires 2 ' are required to be connected with the inserting sheet 3 ', a part of lacquer skin is required to be treated to leak out of the outgoing lines and then is connected with the inserting sheet 3 ', no specific placing position exists after the inserting sheet 3 ' is connected with the outgoing lines, and in the subsequent injection molding process, fixing structures such as clamping grooves for fixing the inserting sheet 3 ' are required to be arranged in an injection mold, or an insert structure for fixing the inserting sheet 3 ' is additionally arranged in the electromagnetic coil.

The electromagnetic coil is provided with a lead wire in the following process: ① An insulating sleeve (lacquer skin) is sleeved outside the 2' outgoing line of the enameled wire; ② peeling paint: stripping 2' lacquer skin of the enameled wire; ③ Fixed enameled wire 2': using adhesive tape to adhere the insulating sleeve and the coil; ④ Welding the tail end of the outgoing line with the inserting sheet 3'; ⑤ Fixed insert 3': inserts are used to secure the blades 3' in the respective positions. In order to avoid the paint skin arranged in a short circuit, excessive steps are added when the lead is arranged, so that the steps of the lead are complicated. Therefore, there is a need to design a lead-out structure of an electromagnetic coil and the electromagnetic coil to solve the above-mentioned problems.

Disclosure of utility model

The utility model aims to provide a lead-out structure of an electromagnetic coil, which is capable of avoiding peeling paint when a lead is arranged, sleeving a sleeve, arranging a jogged piece for fixing an inserting piece, reducing the number of parts, lowering the cost and simplifying the installation steps of the lead structure.

Another object of the present utility model is to provide an electromagnetic coil that can reduce the number of parts of the electromagnetic coil and increase the installation speed of the electromagnetic coil.

To achieve the purpose, the utility model adopts the following technical scheme:

Electromagnetic coil's lead wire extraction structure, electromagnetic coil include skeleton and coil, and above-mentioned coil twines in above-mentioned skeleton and has two lead-out wires, and above-mentioned electromagnetic coil's lead wire extraction structure includes:

The two inserting pieces are respectively arranged on the framework, each inserting piece comprises a connecting part and an inserting piece part which are sequentially connected, each connecting part is connected with the framework, each inserting piece part is arranged at an included angle with the axis of the framework and extends towards the direction deviating from the coil, and each inserting piece part is used for being connected with the outside;

the two outgoing lines are respectively connected with the two inserting sheet parts.

As an alternative, the insert further includes a winding portion, the connection portion and the insert portion are connected to both ends of the winding portion, respectively, and the lead wire is connected to the insert after winding the winding portion.

As an alternative, the ends of the two outgoing lines are connected to the corresponding inserting pieces by spot welding.

As an alternative, the insert further includes a clamping portion connected to one side of the insert portion, and the clamping portion is rotatable with respect to the insert to clamp a portion of the lead wire to the insert portion.

As an alternative, the clamping portion has an initial position, and the angle between the clamping portion and the insert portion in the initial position is 30 °.

As an alternative scheme, the connection part is provided with a fir tree structure, and the fir tree structure is embedded in the splicing hole formed on the framework.

Electromagnetic coil, including foretell electromagnetic coil's lead wire draw forth structure, skeleton, coil, upper cover plate, support and lower apron, above-mentioned support encloses to be located outside the above-mentioned skeleton, and above-mentioned upper cover plate is installed in above-mentioned support upper portion and is located the upside of above-mentioned skeleton, and above-mentioned lower apron is installed in above-mentioned support lower part and is located the downside of above-mentioned skeleton, and part above-mentioned inserted sheet protrusion is in the setting of above-mentioned support.

As an alternative, the outer periphery of the bracket is provided with a through hole.

As an alternative scheme, a first limiting protrusion is convexly arranged on the circumferential direction of the upper cover plate, a first limiting groove is formed in the upper end of the bracket, and the first limiting protrusion is clamped in the first limiting groove;

The circumference of the lower cover plate is convexly provided with a second limiting protrusion, the lower end of the bracket is provided with a second limiting groove, and the second limiting protrusion is clamped in the second limiting groove.

As an alternative, the electromagnetic coil further includes a plastic-coated housing, the plastic-coated housing is coated on the bracket, and at least part of the insert part is convexly disposed on the plastic-coated housing.

The utility model has the beneficial effects that:

The utility model provides a lead-out structure of an electromagnetic coil, which is characterized in that an inserting sheet is arranged into a connecting part and an inserting sheet part which are sequentially connected, paint peeling is not required after the lead-out wire is led out, a sleeve is not required, the lead-out wire is directly connected to the inserting sheet part, a space is formed between the lead-out wire and a coil, short circuit is prevented, the position is fixed after the lead-out wire is connected, re-adhesion is not required, and the steps are simple; furthermore, because the inserted sheet is directly installed on the skeleton, solenoid need not to set up the inserts again, or need not to set up the structure that is used for fixed inserted sheet in the injection mold for the number of part reduces, and the cost reduces, has improved the speed of lead wire installation.

The utility model also provides an electromagnetic coil, which can reduce the number of parts of the electromagnetic coil and improve the installation speed of the electromagnetic coil by adopting the lead-out structure of the electromagnetic coil.

Drawings

FIG. 1 is a schematic diagram of a prior art electromagnetic coil;

FIG. 2 is a schematic diagram of a structure of a lead wire of an electromagnetic coil according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the structure of an upper insert sheet according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a structure of an electromagnetic coil before injection molding according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of an electromagnetic coil after injection molding according to an embodiment of the present utility model.

In the figure:

1', a framework; 2', enamelled wire; 3', inserting sheets;

1. an upper cover plate; 2. a bracket; 3. a skeleton; 4. a coil; 41. a lead-out wire; 42. a main body; 5. an upper inserting sheet; 51. a connection part; 511. a fir tree structure; 52. a winding part; 53. an insertion piece part; 54. a clamping part; 6. a lower insert sheet; 7. a lower cover plate; 8. and (5) coating a plastic shell.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The embodiment provides a lead-out structure of electromagnetic coil, need not to peel the lacquer skin when the lead wire sets up, need not to overlap the sleeve pipe, need not to set up the gomphosis piece of fixed inserted sheet, reduce part number, reduce cost, simplify the installation step of lead wire structure. The electromagnetic coil comprises a framework 3 and a coil 4, wherein the coil 4 is wound on the framework 3 and extends out of two outgoing lines 41, as shown in fig. 2, the lead-out structure of the electromagnetic coil comprises two inserting sheets, the two inserting sheets are respectively arranged on the framework 3, each inserting sheet comprises a connecting part 51 and an inserting sheet part 53 which are sequentially connected, the connecting parts 51 are connected to the framework 3, the inserting sheet parts 53 are arranged at an included angle with the axis of the framework 3 and extend towards a direction deviating from the coil 4, and the inserting sheet parts 53 are used for being connected with the outside; the two lead wires 41 are connected to the two tab portions 53, respectively. According to the lead-out structure of the electromagnetic coil, the inserting sheets are arranged to be the connecting part 51 and the inserting sheet part 53 which are sequentially connected, the paint is not required to be sleeved after the lead-out wires 41 are led out, the lead-out wires are directly connected to the inserting sheet part 53, a space can be formed between the lead-out wires and the coil 4, short circuits are prevented, the positions are fixed after the lead-out wires are connected, re-adhesion is not required, and the steps are simple; furthermore, because the inserted sheet is directly installed on skeleton 3, solenoid need not to set up the inserts again, or need not to set up the structure that is used for fixed inserted sheet in the injection mold for the number of part reduces, and the cost is reduced, has improved the speed of lead wire installation.

In this embodiment, two insert edges are respectively connected to two ends of the framework 3, and in other embodiments, two insert edges may also be disposed at one end of the framework 3 and spaced apart from each other, which is not limited herein.

In this embodiment, the two inserting sheets are the upper inserting sheet 5 and the lower inserting sheet 6, the detailed structure of the upper inserting sheet 5 in fig. 2 is illustrated, the structure of the lower inserting sheet 6 is the same as that of the upper inserting sheet 5, and the details are not repeated herein, and the upper inserting sheet 5 is also illustrated as an example, and is not emphasized hereinafter.

Preferably, the upper insert sheet 5 further includes a winding portion 52, and a connection portion 51 and an insert sheet portion 53 are connected to both ends of the winding portion 52, respectively, and the outgoing line 41 is connected to the insert sheet after winding around the winding portion 52. Through the above arrangement, the length of the outgoing line 41 has uncertainty, when the outgoing line 41 is overlong, the overlong outgoing line 41 can be wound on the winding part, the connection position of the free end of the outgoing line 41 and the inserting piece part 53 is ensured to be proper, and the stacking of the outgoing lines 41 is not caused, so that the appearance is tidy.

Wherein the portion of the wire bundle 4 wound around the bobbin 3 is the main body 42.

As shown in fig. 2, the connection portion 51 is perpendicular to the winding portion 52, the winding portion 52 is parallel to the axis of the frame 3, and the insertion portion 53 is perpendicular to the winding portion 52. With the above arrangement, the distance between the connection portion 51 and the main body 42 can be ensured, and the short circuit between the lead wire 41 and the main body 42 can be prevented.

Alternatively, the connection mode of the connection part 51 and the framework 3 is a plugging mode. In other embodiments, the connection manner of the connection portion 51 and the frame 3 may be screw connection or riveting, which is not limited herein.

Preferably, as shown in fig. 3, the connection portion 51 is provided with a fir tree structure 511, and the fir tree structure 511 is embedded in a plug hole formed on the framework 3. Through above-mentioned setting, can increase the pull-out force of going up inserted sheet 5 and skeleton 3, guarantee the connection stability of inserted sheet 5 and skeleton 3. In this embodiment, three fir structures 511 are disposed in the extending direction of the connecting portion 51, so that different plugging depths of the upper plug 5 can be ensured to be firmly fixed with the framework 3. In other embodiments, fir tree structure 511 may be provided as one, two, four or more, without limitation.

It can be understood that the fir tree structure 511 is a saw-tooth structure formed by protruding outwards from two sides of the connecting portion 51, after the installation, when the upper insert 5 is subjected to an outwards pulling force, the saw-tooth edge of the fir tree structure 511 abuts against the plugging hole, and cannot be separated, so that the stable connection between the upper insert 5 and the framework 3 is realized.

In the prior art, the tab and the lead-out wire 41 are usually soldered, the soldered position is not stable enough after soldering, and in the subsequent injection molding process, the connection at the soldered position is broken due to the pressure of injection molding, so that the product is scrapped.

In order to solve the above-described problem, in the present embodiment, the ends of the two outgoing lines 41 are connected to the corresponding tabs by spot welding. By the arrangement, the connection strength of the spot welding is higher, the injection molding pressure can be better resisted, and the connection disconnection of the outgoing line 41 and the corresponding inserting sheet is prevented.

Preferably, as shown in fig. 2 and 3, the tab further includes a clamping portion 54, the clamping portion 54 being connected to one side of the tab portion 53, the clamping portion 54 being rotatable relative to the tab such that the clamping portion 54 clamps a portion of the outlet 41 to the tab portion 53. Through the arrangement, in the process of spot welding the outgoing line 41 and the inserting piece part 53, the tight fitting of the outgoing line 41 and the inserting piece part 53 can be ensured, and the phenomenon of cold joint after spot welding caused by the fact that the fitting is not tight is avoided.

Alternatively, the clamping portion 54 has an initial position (i.e. the position of the clamping portion 54 in fig. 3), in this embodiment, the included angle between the clamping portion 54 and the tab portion 53 in the initial position is 30 °, so that a certain space is left between the clamping portion 54 and the tab portion 53 for the lead-out wire 41 to pass through, and the clamping portion 54 cannot break at the position where the clamping portion 54 and the tab portion 53 are connected due to an excessive rotation stroke of the clamping portion 54 relative to the tab portion 53. In other embodiments, the included angle may be adapted according to the fatigue strength of the material, for example, 45 ° or 60 °, etc., without limitation.

The embodiment further provides an electromagnetic coil, as shown in fig. 4, which includes the lead-out structure of the electromagnetic coil, a framework 3, a coil 4, an upper cover plate 1, a support 2 and a lower cover plate 7, wherein the support 2 is enclosed outside the framework 3, the upper cover plate 1 is mounted on the upper portion of the support 2 and is located on the upper side of the framework 3, the lower cover plate 7 is mounted on the lower portion of the support 2 and is located on the lower side of the framework 3, and part of the inserting sheet protrudes out of the support 2. By adopting the lead-out structure of the electromagnetic coil, the number of parts of the electromagnetic coil can be reduced, and the installation speed of the electromagnetic coil can be improved. Wherein, upper cover plate 1, support 2 and lower apron 7 play the guard action to skeleton 3 and main part 42, prevent in the in-process of follow-up moulding plastics that skeleton 3 and main part 42 received the too big pressure and cause problems such as warp.

Preferably, the outer circumference of the bracket 2 is provided with through holes. Through the arrangement, the through holes can be filled in the subsequent injection molding process, so that the through holes play a role in assisting in positioning the main body 42, gaps are prevented between the support 2 and the coil 4, and the coil 4 shakes in the support 2 in the use process.

Specifically, a first limiting protrusion is convexly arranged on the circumferential direction of the upper cover plate 1, a first limiting groove is formed in the upper end of the bracket 2, and the first limiting protrusion is clamped in the first limiting groove; the circumference of the lower cover plate 7 is convexly provided with a second limiting protrusion, the lower end of the bracket 2 is provided with a second limiting groove, and the second limiting protrusion is clamped in the second limiting groove. The limit of the upper cover plate 1 and the lower cover plate 7 relative to the bracket 2 in the circumferential direction and the radial direction can be realized.

Preferably, as shown in fig. 5, the electromagnetic coil further includes a plastic-coated housing 8, the plastic-coated housing 8 is coated on the support 2, and at least part of the insert part 53 is convexly arranged on the plastic-coated housing 8. Through the arrangement, the inserting sheet can be connected with an external device more conveniently.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. Electromagnetic coil's lead wire draws forth structure, electromagnetic coil includes skeleton (3) and coil (4), coil (4) twine in skeleton (3) and have two lead-out wires (41), its characterized in that, electromagnetic coil's lead wire draws forth structure includes:

The two inserting sheets are respectively arranged on the framework (3), each inserting sheet comprises a connecting part (51) and an inserting sheet part (53) which are sequentially connected, the connecting parts (51) are connected with the framework (3), the inserting sheet parts (53) are arranged at an included angle with the axis of the framework (3) and extend towards the direction deviating from the coil (4), and the inserting sheet parts (53) are used for being connected with the outside;

the two lead wires (41) are connected to the two tab portions (53), respectively.

2. The lead-out structure of an electromagnetic coil according to claim 1, wherein the tab further includes a winding portion (52), the connection portion (51) and the tab portion (53) are connected to both ends of the winding portion (52), respectively, and the lead-out wire (41) is connected to the tab after being wound around the winding portion (52).

3. The lead-out structure of an electromagnetic coil according to claim 1, wherein the ends of two lead wires (41) are connected to the corresponding tab pieces by spot welding.

4. A lead-out structure of an electromagnetic coil according to claim 3, wherein the tab further includes a clamping portion (54), the clamping portion (54) being connected to one side of the tab portion (53), the clamping portion (54) being rotatable relative to the tab so that the clamping portion (54) clamps a portion of the lead-out wire (41) to the tab portion (53).

5. The lead-out structure of an electromagnetic coil according to claim 4, wherein the clamping portion (54) has an initial position, and an angle between the clamping portion (54) and the tab portion (53) in the initial position is 30 °.

6. The lead-out structure of an electromagnetic coil according to any one of claims 1 to 5, wherein the connecting portion (51) is provided with a fir tree structure (511), and the fir tree structure (511) is fitted into a plug hole formed in the bobbin (3).

7. Electromagnetic coil, its characterized in that includes the lead wire of any one of claims 1-6 draw forth structure, skeleton (3), coil (4), upper cover plate (1), support (2) and lower apron (7), support (2) enclose and locate outside skeleton (3), upper cover plate (1) install in support (2) upper portion and be located the upside of skeleton (3), lower apron (7) install in support (2) lower part and be located the downside of skeleton (3), part the inserted sheet protrusion in support (2) set up.

8. Electromagnetic coil according to claim 7, characterized in that the outer circumference of the support (2) is provided with through holes.

9. The electromagnetic coil as set forth in claim 7, wherein a first limiting protrusion is provided on the upper cover plate (1) in a protruding manner in a circumferential direction, a first limiting groove is provided at an upper end of the bracket (2), and the first limiting protrusion is clamped in the first limiting groove;

the circumference of lower apron (7) is protruding establishes the spacing arch of second, the second spacing groove is seted up to the lower extreme of support (2), the spacing protruding joint of second in the second spacing groove.

10. The electromagnetic coil as set forth in claim 7, further comprising a plastic-coated housing (8), wherein the plastic-coated housing (8) is coated on the bracket (2), and at least a portion of the insert portion (53) is protruding from the plastic-coated housing (8).