WO2015061973A1

WO2015061973A1 - Assembled electromagnetic device

Info

Publication number: WO2015061973A1
Application number: PCT/CN2013/086196
Authority: WO
Inventors: 李宗正
Original assignee: 深圳市联泰兴电子科技有限公司
Priority date: 2013-10-30
Filing date: 2013-10-30
Publication date: 2015-05-07

Abstract

An assembled electromagnetic device comprises a hollow housing (1) provided with an opened bottom, and comprises a bottom plate (2) and at least one group of electromagnetic components (3). Close fit structures (4) in fit with one another are disposed on at least two opposite sidewalls of the housing (1) and at least two opposite side surfaces of the bottom plate (2). The bottom plate (2) is clamped on the opened bottom of the housing (1) by means of the close fit structures (4), and is formed into a sealed housing body with the housing (1). The electromagnetic components (3) are located inside the housing body. A plurality of pins (31) of the electromagnetic components (3) penetrates through the bottom plate (2).

Description

Assembled electromagnetic device

Technical field

The present invention relates to an electromagnetic device, and more particularly to an assembled electromagnetic device.

Background technique

With the development of technology, the application of electromagnetic devices is becoming more and more extensive. For example, communication transformers can be used in telephone terminal circuits, network communications, and trunk product lines to regulate the quality and status of communication circuits. Communication transformer products are widely used in cable modems, network cards, hubs, xDSL broadband communication equipment, switches, fiber optic transceivers, routers, data communication equipment, optoelectronic transmission equipment, access network equipment, power line equipment, Voice equipment and more.

Existing electromagnetic devices typically include a housing and electromagnetic components disposed within the housing. The housing is made up of a housing and a bottom plate The electromagnetic component includes a pin base, a plurality of pins mounted on the pin base, and an electromagnetic coil installed in the pin holder. The bottom plate is provided with a plurality of pin holes, the pin seats are located in the outer casing, and the pins of the electromagnetic component are exposed through the pin holes of the bottom plate.

When assembling the electromagnetic device, the electromagnetic component assembly is first inserted on the bottom plate (the pins of the assembly are inserted into the holes on the floor one by one), and then the inserted module is pressed into the outer casing, so that the bottom plate is positioned in the outer casing. On the support post, the sealant is then poured into the bottom plate and the outer casing through the glue opening of the bottom plate, thereby fixing the electromagnetic component in the outer casing with the sealant, and sealing the bottom plate and the outer casing. The existing plastic sealing device adopts the rubber sealing method, which makes the assembly of the electromagnetic device complicated and costly, and the glue filling operation must be proper, and the excessive filling of the glue is avoided to cause rework; and the glue sealing is neither environmentally friendly nor energy-saving. Not conducive to industrial applications.

Summary of the invention

The technical problem to be solved by the present invention is to provide an assembled electromagnetic device which is simple to assemble, does not require a potting and packaging, and has low cost.

The technical solution adopted by the present invention to solve the technical problem thereof is to provide an assembled electromagnetic device, which comprises a hollow outer casing with an open bottom, a bottom plate and at least one electromagnetic component having a plurality of stitches; at least two opposite side walls of the outer casing and at least two opposite sides corresponding to the bottom plate are provided with a mating tight fitting structure, the bottom plate Engaging on the open bottom of the outer casing by the tight fitting structure, forming a closed casing with the outer casing; the electromagnetic component is located in the outer casing, and the plurality of pins of the electromagnetic component are worn Out of the bottom plate .

In the assembled electromagnetic device of the present invention, the tight fitting structure includes a tight fitting boss and a tight fitting groove that cooperate with each other;

The tight fitting boss is disposed on the outer casing, and the tight fitting groove is disposed on the bottom plate corresponding to the tight fitting boss Or; the tight fitting boss is disposed on the bottom plate, and the tight fitting groove is disposed on the outer casing corresponding to the tight fitting boss.

In the assembled electromagnetic device of the present invention, the outer peripheral shape of the bottom plate and the outer casing The open bottom outer peripheral shape is correspondingly disposed; each side of the bottom plate is in contact with the inner wall surface of each side wall corresponding to the outer casing; and at least one side wall inner wall surface of the outer casing is convexly provided with at least one Limiting member A surface facing the outer casing is pressed against the stopper.

In the assembled electromagnetic device of the present invention, the bottom plate is provided with a plurality of through-hole holes through which the plurality of pins pass.

In the assembled electromagnetic device of the present invention, The pin hole is a tapered hole having an inner diameter at one end of the bottom plate facing the surface of the outer casing being larger than an inner diameter of the other end on the surface of the bottom plate facing away from the outer casing.

In the assembled electromagnetic device of the present invention, The electromagnetic component includes a pin holder for fixedly mounting the pin, and an electromagnetic coil fixedly disposed on the pin holder and electrically connected to the pin; both sides of the pin holder and the outer casing The inner wall surfaces of the opposite side walls are provided with a limiting structure that cooperates to limit the electromagnetic component to the inner casing.

In the assembled electromagnetic device of the present invention, the limiting structure includes a limiting rib and a limiting slot;

The limiting rib is protruded from the outer casing The limiting slots are disposed on opposite sides of the pin holder; or the limiting ribs are protruded on opposite sides of the pin holder, and the limiting slot is disposed On the inner wall surface of the side wall of the outer casing.

In the assembled electromagnetic device of the present invention, A plurality of the pins are arranged at intervals and fixedly mounted on the pin holder. The pin holders are correspondingly provided with a plurality of fixing slots for mounting the plurality of pins.

In the assembled electromagnetic device of the present invention, A plurality of the pins are respectively inserted into the plurality of fixing slots at one end, and the other ends of the plurality of pins are parallel to each other on the pin holder.

In the assembled electromagnetic device of the present invention, the outer casing is an outer casing made of a PBT material; and the bottom plate is a bottom plate made of black bakelite.

The assembled electromagnetic device of the present invention locks the bottom plate to the outer casing by providing a tight fit structure with the outer casing and the bottom plate In the above, together with the outer casing, a closed casing is formed, which does not require the prior art potting sealing operation, is simple in assembly, low in cost, and has good electrical and mechanical properties.

In addition, the PGA display pin package of the electromagnetic device can be realized by arranging a plurality of sets of electromagnetic components in an array, saving the product occupying the area of the PCB, improving the reliability of the product, and improving the working frequency of the product; A matching structure is provided on the outer casing and the pin base to ensure that the pin seat is well positioned In the outer casing, the pin seat is prevented from being tilted, so that the prior art fixing operation to the outer casing is not required, which simplifies assembly and reduces cost.

DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is an exploded perspective view of an assembled electromagnetic device according to an embodiment of the present invention;

2 is a side view showing a combined state of an assembled electromagnetic device according to an embodiment of the present invention;

3 is a top plan view showing a combined state of an assembled electromagnetic device according to an embodiment of the present invention;

4 is a top plan view showing the outer casing of the assembled electromagnetic device according to an embodiment of the present invention;

5 is a top plan view of a bottom plate of an assembled electromagnetic device according to an embodiment of the present invention;

Figure 6 is a cross-sectional view taken along line A-A of Figure 5;

7 is a cross-sectional view showing an electromagnetic component of an assembled electromagnetic device according to an embodiment of the present invention;

Figure 8 is a side elevational view showing the electromagnetic component of the assembled electromagnetic device according to an embodiment of the present invention;

Figure 9 is a cross-sectional view showing the outer casing of the assembled electromagnetic device according to an embodiment of the present invention;

Figure 10 is a cross-sectional view showing another embodiment of the outer casing of the assembled electromagnetic device according to an embodiment of the present invention;

11 is a schematic exploded view of an assembled electromagnetic device according to another embodiment of the present invention;

Figure 12 is a top plan view of the outer casing of the assembled electromagnetic device shown in Figure 11;

Figure 13 is a cross-sectional view showing the electromagnetic component of the assembled electromagnetic device shown in Figure 11;

Figure 14 is a top plan view of the bottom plate of the assembled electromagnetic device of Figure 11;

detailed description

For a better understanding of the technical features, objects and effects of the present invention, the embodiments of the present invention are described in detail with reference to the accompanying drawings.

As shown in FIG. 1-3, an assembled electromagnetic device according to an embodiment of the present invention includes a housing 1 and a bottom plate 2 And at least one electromagnetic component 3, the bottom plate 2 and the outer casing 1 are tightly fitted The assembly of the housing into a housing allows the electromagnetic component 3 to be mounted in the housing without the need for potting or any adhesive sealing, which is simple to assemble and low in cost.

As shown in FIG. 4, the outer casing 1 has a substantially hollow frame shape, and one side of the bottom portion is open to form an open frame to facilitate the insertion of the electromagnetic component 3 therein. The outer casing 1 can be injection molded, and of course it can be formed by other means. It can be understood that the cross-sectional shape of the outer casing 1 can be square, rectangular, circular or other shapes, and the outer casing size can also be changed when the number of stitches is changed as needed.

Preferably, the outer casing 1 It can be made of PBT (polybutylene terephthalate) material with excellent chemical stability, mechanical strength, electrical insulation properties and thermal stability. Of course, the outer casing 1 can also be made of other materials according to requirements. to make.

The bottom plate 2 is capped on the open bottom of the outer casing 1, and the shape of the bottom plate 2 matches the shape of the open bottom of the outer casing 1, thereby forming a closed casing with the outer casing 1 to facilitate closing the electromagnetic component 3 to the outer casing. 1 inside. The bottom plate 2 can also be injection molded, or it can be formed by other means, such as machining. The bottom plate 2 It can be made of black bakelite, with high mechanical strength, good insulation properties and heat and corrosion resistance; of course, the bottom plate 2 can also be made of other materials as needed.

As shown in FIG. 5, the bottom plate 2 is provided with a plurality of pin holes 20 for facilitating the insertion of the pins 31 of the electromagnetic component 3, and The external electronic components are connected and passed through the bottom plate 2 and the outer casing 1 The other part of the electromagnetic component 3 is enclosed in the housing. In the present embodiment, the electromagnetic components 3 are four groups. Correspondingly, the pin holes 20 include four groups arranged in parallel, so that the pins 31 of each group of electromagnetic components 3 are allowed to pass through through a set of pin holes 20. Understandably, The number of the electromagnetic components 3 can be designed in one or more groups as needed, and the number of the pin holes 20 corresponds to the number of the electromagnetic components 3. The PGA display pin package of the electromagnetic device can be realized by arraying a plurality of sets of electromagnetic components 3 to save the product occupying the PCB area, improve the reliability of the product, improve the working frequency of the product, and have good electrical and mechanical properties.

further, The inner diameter of the pin hole 20 is substantially equal to the outer diameter of the pin 31, so as to avoid a gap between the pin hole 20 and the pin 31 after assembly, so as to ensure more compact and reliable assembly and improve assembly quality.

As shown in FIG. 6, in order to make the stitch 31 more easily pass through the stitch hole 20, the stitch hole 20 can be tapered to form a tapered hole. The tapered hole is located The inner diameter of one end 201 of the bottom plate 2 facing the surface of the outer casing 1 is larger than that of the bottom plate 2 facing away from the outer casing 1 The inner diameter of the other end 202 on the surface is such that when the stitch 31 passes through the stitch hole 20, it penetrates from the end 202 having the larger inner diameter of the pin hole 20, and passes through the end 202 having the smaller inner diameter of the pin hole 20. One end 202 of the smaller inner diameter may be equal to the diameter of the stitch 31 or slightly larger than the diameter of the stitch 31, ensuring that there is no gap between the stitch 31 and the end 202 of the smaller inner diameter to ensure a tighter and more reliable assembly. It will be appreciated that the pin holes 20 may also be cylindrical or otherwise shaped.

The electromagnetic component 3 is housed in a casing composed of the bottom plate 2 and the outer casing 1, and the pins 31 of the electromagnetic component 3 pass through the bottom plate 2 Used to connect with external electronic components. In this embodiment, the electromagnetic components 3 are four sets, which are respectively disposed in the hollow outer casing 1; of course, the number of the electromagnetic components 3 can be set to one or more as needed, as long as the size of the outer casing 1 is scaled accordingly. And the pin holes 20 on the bottom plate 2 are correspondingly arranged, thereby realizing one or more sets of electromagnetic processing.

As shown in FIG. 7, each of the electromagnetic components 3 includes a pin 31, a pin holder 32, and an electromagnetic coil (not shown). The pin holder 32 is fixedly mounted to the pin 31 and the electromagnetic coil, and the electromagnetic coil and the pin 31 are electrically connected by a wire.

The pin holder 32 can be made of black bakelite. Of course, it can also be injection molded. The pin holder 32 is provided with a slot for the electromagnetic coil to be fixedly mounted, so that the electromagnetic coil is fixed on the pin holder 32. Further, a glue layer may be coated between the electromagnetic coil and the stitch 31 and the pin base 32 to keep the electromagnetic coil and the stitch 31 insulated, and to make the electromagnetic coil more stable on the pin base 32.

A plurality of pins 31 are arranged at intervals and fixedly mounted on the pin holder 32. The pin holder 32 is provided with a plurality of fixing grooves 320 for mounting a plurality of pins 31. The plurality of pins 31 are respectively inserted into the plurality of fixing grooves 320 at one end, and the other ends of the plurality of pins 31 are parallel to each other and located on the base 32. The plurality of pins 31 can be evenly spaced or evenly arranged.

As shown in FIGS. 7 and 8, in the present embodiment, the stitches 31 have 24, divided into two groups of 12 stitches each; in each set, 12 stitches are evenly arranged in two rows and fixedly mounted on the pin base 32. In order to better fix the pins 31, each of the fixing grooves 320 has a U shape, and one end of each of the pins 31 is received therein along the fixing groove 320, so that the end of the pin 31 inserted into the fixing groove 320 is also bent into U. The shape increases the strength of the pin 31 fixed on the pin holder 32, and provides a winding position, which facilitates the direct winding of the wire of the electromagnetic coil to form a reliable electrical connection. It can be understood that the fixing groove, the manner of stitching, and the like can be adopted in various existing manners.

In the present embodiment, the electromagnetic components 3 are four groups, and each of the electromagnetic components 3 has 24 pins on the pin base 32. Therefore, the assembled electromagnetic device has a total of 96 pins. It can be understood that the number of electromagnetic components 3 can be increased or decreased as needed, and the stitches on each of the pin bases 32 can also be increased or decreased as needed.

In this embodiment, at least two opposite side walls of the outer casing 1 and at least two opposite side surfaces of the corresponding bottom plate 2 are provided with a mating tight fitting structure 4, The bottom plate 2 is engaged with the opening of the outer casing 1 by the tight fitting structure 4 Bottom The upper casing 1 and the outer casing 1 form a closed casing; the electromagnetic component 3 is located in the outer casing 1, and the plurality of pins 31 of the electromagnetic component 3 pass through the bottom plate 2 to be electrically connected to the outside. In the assembled electromagnetic device, the bottom plate 2 and the outer casing 1 are assembled into a casing by the tight fitting structure 4, and the casing is sealed without any glue or any adhesive, and the assembly is simple and the cost is low.

As shown in FIGS. 1 and 4 , the tight fitting structure 4 includes, but is not limited to, a tight fitting boss 41 and a tight fitting groove 42 that cooperate with each other. As an embodiment, the tight fitting boss 41 may be disposed on the outer casing 1 The upper mating groove 42 is disposed on the bottom plate 2 corresponding to the tight fitting boss 41. The bottom plate 2 is engaged with the tight fitting boss 41 by the tight fitting groove 42 to engage with the outer casing 1 On. As another embodiment, the tight fitting groove 42 may be disposed on the outer casing 1 , and the tight fitting boss 41 is disposed on the bottom plate 2 corresponding to the tight fitting groove 42 , and the bottom plate 2 The tight fitting boss 41 is fitted to the outside of the tight fitting groove 42 to be engaged with the outer casing 1. As long as the tight fitting boss 41 and the tight fitting groove 42 are separately disposed on the outer casing 1 and the bottom plate 2, the two can be snap-fitted.

As shown in FIG. 9, in the present embodiment, the outer casing 1 is rectangular, and the tight fitting boss 41 is disposed on the outer casing 1. On the inner wall surfaces of the opposite side walls, the tight fitting grooves 42 are disposed on the opposite side faces of the bottom plate 2; and the tight fitting grooves 42 are opened inwardly from the side of the bottom plate 2 and penetrate the bottom plate 2 away from the outer casing 1 On the surface. When engaging, the tight fitting grooves 42 on the bottom plate 2 are respectively corresponding to the tight fitting bosses 41, and the bottom plate 2 is pressed against the surface of the tight fitting boss 41 into the outer casing 1 to the tight fitting groove 42 tightly fitted to the tight fitting bosses. 41.

Further, the surface of the tight fitting boss 41 can be formed as a sloped surface to form an inverted buckle shape, so that the bottom plate 2 can be buckled on the tight fitting groove 42 after being inserted and passed. Of course, the shape of the tight fitting boss can be made in other forms.

Generally, the outer peripheral shape of the bottom plate 2 is set corresponding to the outer peripheral shape of the open bottom of the outer casing 1, and the bottom plate 2 is engaged with the outer casing 1 Afterwards, each side of the bottom plate 2 is mated with each side wall corresponding to the outer casing 1. In this embodiment, each side of the bottom plate 2 and the outer casing 1 The inner wall surfaces of the corresponding side walls are connected so that the open bottom of the outer casing 1 can be completely covered to form an enclosed space.

Further, in order to allow the bottom plate 2 to be engaged in the proper position on the outer casing 1 and to prevent the bottom plate 2 from being excessively trapped in the outer casing 1, the outer casing may be At least one of the limiting members 11 is protruded from the inner wall surface of the at least one side wall, so that when the bottom plate 2 is engaged with the outer casing 1, the bottom plate 2 is pressed against the limiting member 11 toward the surface of the outer casing 1. . The limiting member 11 may be a rib or a bump integrally formed on the inner wall surface of the outer casing 1, or an attachment fixed to the inner wall surface by a connecting structure. In order to make the bottom plate 2 more balanced and stable to cover the open bottom of the outer casing 1 Upper limit members 11 are disposed on the inner wall surfaces or the inner wall surfaces of both side walls of the outer casing 1. It can be understood that the limiting member can also be other structural forms disposed at other positions of the outer casing 1, for example, from the bottom of the outer casing 1. A support column or the like extending in the middle position.

As shown in FIG. 9, in the embodiment, the limiting member 11 In one embodiment, the limiting member 11 is a rib protruding from the inner wall surface of the side wall of the outer casing 1. The rib is disposed along the height direction of the side wall of the outer casing 1 and has a length smaller than the height of the side wall, so as to be on the top surface of the rib. The open bottom of the outer casing 1 A certain distance is formed between them for the bottom plate 2 to be accommodated. The bottom plate 2 is restrained between the limiting member 11 and the tight fitting boss 41 by the combination of the limiting member 11 of the rib and the tight fitting boss 41.

As shown in FIG. 10, in another embodiment of the limiting member 11 of the embodiment, the limiting member 11 is a protrusion protruding from the inner wall surface of the side wall of the outer casing 1. The shape of the bump is not limited, and may be a polygon such as a triangle or a rectangle, or a semicircle or a semi-ellipse. Similarly, a certain distance is also formed between the top surface of the bump and the open bottom of the outer casing 1 for the bottom plate 2 to be accommodated.

Further, in order to position the electromagnetic component 3, the electromagnetic component 3 is prevented from tilting within the outer casing 1, on both sides of the electromagnetic component 3 and the outer casing 1 The inner wall surfaces of the opposite side walls are provided with mutually matching limiting structures, and the electromagnetic components 3 are confined in the outer casing 1 through the limiting structure, and can function as the stable limiting electromagnetic component 3.

7 to 10, the limiting structure may include a matching limiting rib 51 and a limiting groove 52. In this embodiment, the limiting rib 51 is protruded from the outer casing. 1 The inner wall surface of the side wall, and the limiting groove 52 are disposed on opposite sides of the pin base 32. As shown, the limiting ribs 51 are four sets which are respectively disposed on the opposite inner wall surfaces of the outer casing 1. Moreover, the height of the limiting rib 51 is smaller than the height of the limiting member 11, thereby limiting the bottom plate 2 and the electromagnetic component 3 at different height positions, so that the entire structure is more reasonable and compact.

When the electromagnetic component 3 is mounted, the limiting groove 52 of the pin base 32 is aligned with the limiting rib 51 and along the limiting rib 51 toward the outer casing 1 The inner pusher is arranged such that the pin base 32 is stably disposed on the outer casing 1 through the limiting groove 52 on both sides thereof and the limiting rib 51. In the above, the use of the prior art glue filling and fixing by the glue is avoided, the use of the glue is greatly saved, the assembly is simplified, and the cost is reduced.

It can be understood that the position of the limiting rib 51 and the limiting groove 52 can be adjusted, for example, the limiting groove 52 is opened on the inner wall surface of the outer casing 1 and penetrates to the open bottom. Correspondingly, the limiting ribs 51 are disposed on the opposite side walls of the pin base 32, and the electromagnetic component 3 can be firmly mounted into the outer casing 1 by aligning the limiting ribs 51 into the limiting slot 52. in.

When the assembled electromagnetic device of this embodiment is assembled, the electromagnetic component 3 can be first The limiting groove 52 of the pin holder 32 is aligned with the limiting rib 51 of the outer casing 1 and advanced into the outer casing 1 along the limiting rib 51, and is mounted in the outer casing 1 with the stitch 31 facing the open bottom, and then the bottom plate 2 is The tight fitting groove 42 corresponds to the tight fitting boss 41 on the outer casing 1, the pinhole 20 corresponds to the stitch 31 of the electromagnetic component 3, and then the bottom plate 2 is pushed toward the open bottom of the outer casing 1. So that the tight fitting boss 41 is snapped onto the tight fitting groove 42, and the stitch 31 passes through the stitch hole 20, so that the outer casing 1 and the bottom plate 2 Forming a closed casing, the pin holder 32 of the electromagnetic component 3 and the electromagnetic coil are enclosed in the casing, and the pin 31 passes through the casing to complete the assembly.

Alternatively, the pins 31 of the electromagnetic component 3 may be first passed from the bottom plate toward the side of the casing 1 through the pin holes 20 of the bottom plate 2 to connect the electromagnetic component 3 with The bottom plates 2 are combined; the bottom plate 2 with the electromagnetic components 3 is oriented toward the outer casing 1 with the pin base 32, the limiting groove 52 of the pin base 32 is aligned with the limiting ribs 51 and along the limiting ribs 51 toward the outer casing 1 The inner casing is advanced until the bottom plate 2 is tightly engaged with the groove 42 to the tight fitting boss 41 of the outer casing 1, and the bottom plate 2 is engaged with the outer casing 1 while the electromagnetic component 3 is mounted on the outer casing 1 Inside, complete the assembly.

It can be understood that the assembled electromagnetic device can include a plurality of electromagnetic components 3 through the outer casing 1 And a limiting structure provided on the electromagnetic component 3, the plurality of electromagnetic components 3 are fixed in the outer casing 1 at intervals, and the bottom plate 2 is provided with a plurality of sets of pin holes 20 corresponding to the pins 31 of the plurality of electromagnetic components 3.

As shown in FIGS. 11-14, an assembled electromagnetic device according to another embodiment of the present invention includes a hollow outer casing 1 and a bottom plate 2 which are open at the bottom. And at least one electromagnetic component 3 having a plurality of pins 31; at least two opposite side walls of the outer casing 1 and at least two opposite sides of the corresponding bottom plate 2 are provided with a mating tight fitting structure 4, the bottom plate 2 The tight fitting structure 4 is engaged with the open bottom of the outer casing 1 to form a closed casing with the outer casing 1; the electromagnetic component 3 is located in the outer casing 1, and the plurality of pins 31 of the electromagnetic component 3 pass through the bottom plate 2 .

The tight fitting structure 4 includes, but is not limited to, a tight fitting boss 41 and a tight fitting groove 42 that cooperate with each other. In this embodiment, the tight fitting boss 41 is disposed on the outer casing. 1 On the inner wall surfaces of the opposite side walls, the tight fitting grooves 42 are disposed on the opposite side faces of the bottom plate 2; and the tight fitting grooves 42 are opened inwardly from the side of the bottom plate 2 and penetrate the bottom plate 2 away from the outer casing 1 on the surface. When engaging, the tight fitting grooves 42 on the bottom plate 2 are corresponding to the tight fitting bosses 41, and the bottom plate 2 is pressed against the surface of the tight fitting boss 41 toward the outer casing 1 The inner to the tight fitting groove 42 is tightly fitted to the tight fitting boss 41. In other embodiments, the tight fitting groove 42 may be disposed on the outer casing 1, and the tight fitting boss 41 is disposed on the bottom plate 2 corresponding to the tight fitting groove 42.

In order to prevent the electromagnetic component 3 from tilting within the outer casing 1, on both sides of the electromagnetic component 3 and the outer casing 1 The inner wall surfaces of the opposite side walls are provided with mutually matching limiting structures, and the limiting structure limits the electromagnetic component 3 to the outer casing 1 Inside. As shown in FIGS. 10-12, the limiting structure may include a limiting rib 51 and a limiting slot 52. The difference between this embodiment and the above embodiment is that the limiting ribs 51 are protruded on opposite sides of the pin base 32, and the limiting groove 52 is disposed on the outer casing. 1 on the inner wall of the side wall.

Specifically, in the embodiment, the limiting slot 52 is disposed in the outer casing 1 The two opposite side walls are on the inner wall surface, and the limiting ribs 52 are protruded on opposite sides of the pin base 32. In order to facilitate the fitting of the upper limit rib 52 of the pin base 32 into the limiting groove 52, the limiting groove 52 located on the outer casing 1 penetrates to the opening of the outer casing 1. Bottom. The side wall of the outer casing 1 may have a suitable thickness to facilitate the setting of the limiting groove 52. When the electromagnetic component 3 is mounted, the pin holder 32 is aligned with the limiting rib 51 to the limiting groove 52 and along the limiting groove 52 to the outer casing 1 Internally propelled, the pin holder 32 is stabilized in the outer casing 1 by the limiting rib 51 on both sides thereof and the limiting groove 52. Therefore, the prior art glue filling is not required, and the adhesive fixing method greatly saves the use of the glue, simplifies assembly and reduces cost.

At the same time, as shown in FIGS. 11 and 14, in order to ensure that the respective sides of the bottom plate 2 are in close contact with the inner wall surfaces of the respective side walls of the outer casing 1 after the bottom plate 2 is engaged with the outer casing 1, the corresponding limit on the side of the bottom plate 2 can be achieved. The groove 52 is provided with a bump 21. After the bottom plate 2 is engaged with the outer casing 1, the protrusion 21 on the bottom plate 2 is fitted into the limiting groove 52 to close the portion of the limiting groove 52 to the open bottom of the outer casing 1.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformation of the present invention and the contents of the drawings may be directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

An assembled electromagnetic device comprising a hollow outer casing (1) and a bottom plate (2) and at least one electromagnetic component (3) having a plurality of pins (31); characterized in that at least two opposite side walls of the outer casing (1) are opposite to the bottom plate (2) corresponding at least two opposite sides are provided with a mating tight fitting structure (4), and the bottom plate (2) is engaged on the open bottom of the outer casing (1) by the tight fitting structure (4) With the outer casing (1) constituting a closed casing; the electromagnetic component (3) is located in the casing (1), and a plurality of pins (31) of the electromagnetic component (3) pass through the bottom plate (2) ).
Assembly electromagnetic device according to claim 1 , the tight fitting structure (4) comprises a tight fitting boss (41) and a tight fitting groove (42);

The tight fitting boss (41) is disposed on the outer casing (1), and the tight fitting groove (42) is disposed on the bottom plate corresponding to the tight fitting boss (41) (2) upper; or, the tight fitting boss (41) is disposed on the bottom plate (2), and the tight fitting groove (42) is disposed on the outer casing corresponding to the tight fitting boss (41) 1) On.
The assembled electromagnetic device according to claim 1, wherein a peripheral shape of said bottom plate (2) and said outer casing The open bottom outer peripheral shape of (1) is correspondingly disposed; each side of the bottom plate (2) is in contact with an inner wall surface of each side wall corresponding to the outer casing (1); and the outer casing At least one limiting member (11) is protruded from the inner wall surface of at least one side wall of (1), and the bottom plate (2) is pressed against the surface of the outer casing (1) against the limiting member (11) .
The assembled electromagnetic device according to claim 1, wherein said bottom plate (2) A plurality of through-holes (20) through which the plurality of pins (31) pass are provided.
The assembled electromagnetic device according to claim 4, wherein said pin hole (20) is a tapered hole, said tapered hole being located at said bottom plate (2) facing said outer casing The inner diameter of one end (201) on the surface of (1) is larger than the inner diameter of the other end (202) on the surface of the bottom plate (2) facing away from the outer casing (1).
Assembly electromagnetic device according to claim 1 The electromagnetic component (3) includes a pin holder (32) for fixedly mounting the pin (31), and is fixedly disposed on the pin holder (32) and electrically connected to the pin (31) Connected electromagnetic coils; both sides of the pin holder (32) and the The inner wall surfaces of the opposite side walls of the outer casing (1) are provided with a limiting structure for cooperating to limit the electromagnetic component (3) to the outer casing (1).
Assembly electromagnetic device according to claim 6 , the limiting structure comprises a limiting rib (51) and a limiting slot (52);

The limiting rib (51) protrudes from the outer casing (1) on the inner wall surface of the side wall, the limiting groove (52) is disposed on opposite sides of the pin seat (32); or the limiting rib (51) is protruded from the pin seat On the opposite sides of (32), the limiting slot (52) is disposed on the outer casing (1) The inner wall surface of the side wall.
Assembly electromagnetic device according to claim 6 The plurality of pins (31) are fixedly mounted on the pin holder (32), and the pin holders (32) are correspondingly provided with a plurality of the pins (31). Fixed slot (320).
Assembly electromagnetic device according to claim 8 The plurality of pins (31) are respectively inserted into the plurality of fixing grooves (320) at one end, and the other ends of the plurality of pins (31) are parallel to each other and located at the pin holder ( 32) On.
The assembled electromagnetic device according to any one of claims 1 to 9, characterized in that the outer casing (1) is an outer casing made of PBT material; (2) A bottom plate made of black electric wood.