Hollow connection device between toroidal inductor and printed circuit board

Abstract

The utility model discloses a hollow connection device for a toroidal inductor and a printed circuit board, comprising a toroidal inductor, a printed circuit board, a first positioning shell and a second positioning shell, the toroidal inductor passes through an inductor through-hole on the printed circuit board, two first positioning shells are located above the printed circuit board, the two first positioning shells are connected by a first transverse connecting bolt, the upper part of the toroidal inductor is located between the two first positioning shells and is locked and positioned by a first locking bolt, two second positioning shells are located below the printed circuit board, the two second positioning shells are connected by a second transverse connecting bolt, the lower part of the toroidal inductor is located between the two second positioning shells and is locked and positioned by a second locking bolt, and the first positioning shell and the second positioning shell are connected by four vertical connecting bolts. The utility model reduces the overall occupied space and realizes reliable positioning connection of the toroidal inductor.

Description

Technical Field

[0001] The utility model relates to a connecting device of a ring-shaped inductor and a printed circuit board, in particular to a hollow-out connecting device of a ring-shaped inductor and a printed circuit board. Background Art

[0002] Toroidal inductors often need to be installed on printed circuit boards in applications. The most common installation method is to install the toroidal inductor on one side of the printed circuit board through a mounting bracket. There is no hole on the printed circuit board for the toroidal inductor to pass through. This structure makes it easy to install the printed circuit board on the bottom or side of the inner cavity of an electronic device (such as a filter). The printed circuit board is close to the bottom or side of the inner cavity of the electronic device (such as a filter).

[0003] In actual applications, in some specific applications, it is necessary to minimize the overall space after the toroidal inductor is connected to the printed circuit board, and the printed circuit board does not need to be too close to the bottom or side of the inner cavity of the electronic device (such as the filter). In such applications, the above-mentioned connection method between the toroidal inductor and the printed circuit board will occupy a large space because there is no overlapping part between the two. Utility Model Content

[0004] The purpose of the utility model is to provide a hollow connection device between a toroidal inductor and a printed circuit board which can reduce the occupied space in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A hollow connection device for a ring inductor and a printed circuit board comprises a ring inductor and a printed circuit board, wherein the printed circuit board is provided with an inductor through-hole, the ring inductor passes through the inductor through-hole, the hollow connection device for the ring inductor and the printed circuit board further comprises a first positioning shell and a second positioning shell, with the plane direction of the printed circuit board being the horizontal direction, the two first positioning shells are located above the printed circuit board, the two first positioning shells are connected by a first horizontal connecting bolt, the upper part of the ring inductor is located between the two first positioning shells and is locked and positioned by a first locking bolt, the two second positioning shells are located below the printed circuit board, the two second positioning shells are connected by a second horizontal connecting bolt, the lower part of the ring inductor is located between the two second positioning shells and is locked and positioned by a second locking bolt, the first positioning shell and the second positioning shell corresponding to each other in vertical direction are connected by a vertical connecting bolt, two vertical connecting through-holes are respectively provided at positions on the printed circuit board located outside the two ends of the inductor through-hole, and four of the vertical connecting bolts pass through the four connecting through-holes respectively.

[0007] Preferably, in order to stably and reliably position and install the annular inductor and facilitate processing and assembly, the first positioning shell is provided with a vertically penetrating through hole, and one side of the through hole is closed and the other side is open, the inner wall surfaces at the two lateral ends of the first positioning shell are arc-shaped surfaces, and the upper width between the two arc-shaped surfaces is smaller than the lower width, the inner walls at the two lateral ends of the first positioning shell are respectively tightly provided with first end thermal conductive rubber pads, and the inner wall of the lateral closed side of the first positioning shell is tightly provided with first side thermal conductive rubber pads, the shell walls at the two lateral ends of the first positioning shell are respectively provided with screw holes, and the first locking bolts are installed in the screw holes, and the screw end of the first locking bolt supports the corresponding first end thermal conductive rubber pad, and the upper part of the annular inductor is simultaneously located between the two lateral ends of the first positioning shell and between the two closed sides of the first positioning shell and is respectively connected to the two first side thermal conductive rubber pads and The four first-end thermally conductive rubber pads are in contact; the second positioning shell is provided with a vertically penetrating through hole, and one lateral side of the through hole is closed and the other lateral side is open; the inner wall surfaces at the lateral ends of the second positioning shell are arc-shaped surfaces, and the lower width between the two arc-shaped surfaces is smaller than the upper width; the inner walls at the lateral ends of the second positioning shell are respectively tightly provided with second end thermally conductive rubber pads, and the inner wall of the lateral closed side of the second positioning shell is tightly provided with second side thermally conductive rubber pads; the shell walls at the lateral ends of the second positioning shell are respectively provided with screw holes, and the second locking bolts are installed in the screw holes, and the screw ends of the second locking bolts support the corresponding second end thermally conductive rubber pads; the lower part of the annular inductor is simultaneously located between the lateral ends of the two second positioning shells and between the closed sides of the two second positioning shells and is respectively in contact with the two second side thermally conductive rubber pads and the four second end thermally conductive rubber pads.

[0008] Preferably, in order to facilitate the connection of the corresponding positioning shells, the lower parts of the outer walls at the two lateral ends of the first positioning shell extend outwards to form a first shell connecting part, and the corresponding two first shell connecting parts at the two lateral ends of the two first positioning shells are connected by the first lateral connecting bolts, and the lower parts of the outer walls at the two lateral ends of the second positioning shell extend outwards to form a second shell connecting part, and the corresponding two second shell connecting parts at the two lateral ends of the two second positioning shells are connected by the second lateral connecting bolts, and the vertically corresponding first shell connecting parts and second shell connecting parts are connected by the vertical connecting bolts.

[0009] Preferably, in order to facilitate the connection between the corresponding first positioning housing and the second positioning housing, the screw rods of the four vertical connecting bolts pass through the four connecting through holes from top to bottom respectively and the lower ends thereof are connected to four nuts respectively.

[0010] Preferably, for ease of application, the two first end thermal conductive rubber pads and the first side thermal conductive rubber pad in the same first positioning shell are interconnected and integrally formed, and the two second end thermal conductive rubber pads and the second side thermal conductive rubber pad in the same second positioning shell are interconnected and integrally formed.

[0011] Preferably, in order to facilitate the adjustment of the distance between the two first positioning shells and the two second positioning shells to accommodate the installation of annular inductors of different sizes, the connecting through hole is a strip through hole and the length direction of the strip through hole is parallel to the axial direction of the central through hole of the annular inductor.

[0012] The beneficial effects of the utility model are:

[0013] The utility model designs two first positioning shells and two second positioning shells that are connected to each other, the upper part of the annular inductor is clamped and positioned by the two first positioning shells, and the lower part of the annular inductor is clamped and positioned by the two second positioning shells, and the first positioning shells and the second positioning shells are respectively arranged above and below the printed board and connected to each other. After the annular inductor is connected to the printed board, there is an overlapping part, which reduces the overall occupied space, realizes the reliable positioning connection of the annular inductor, and can adapt to the needs of connecting annular inductors of different sizes to the printed board, and is particularly suitable for application occasions where the overall space needs to be reduced as much as possible and the printed board does not need to be too close to the bottom surface or side surface of the inner cavity of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional exploded view of the hollow connection device of the toroidal inductor and the printed circuit board before assembly;

[0015] Figure 2 It is a stereoscopic diagram of the hollow connection device of the toroidal inductor and the printed circuit board after being assembled. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings:

[0017] like Figure 1 and Figure 2As shown, the hollow connection device of the annular inductor and the printed circuit board of the utility model comprises an annular inductor 4, a printed circuit board 3, a first positioning shell 1 and a second positioning shell 2. The printed circuit board 3 is provided with an inductor through hole 31. The annular inductor 4 passes through the inductor through hole 31. With the plane direction where the printed circuit board 3 is located as the horizontal direction, the two first positioning shells 1 are located above the printed circuit board 3. The two first positioning shells 1 are connected by a first horizontal connecting bolt 15. The upper part of the annular inductor 4 is located between the two first positioning shells 1 and is locked by a first locking bolt 13. Tightly positioned, the two second positioning shells 2 are located below the printed circuit board 3, the two second positioning shells 2 are connected by a second horizontal connecting bolt 25, the lower part of the annular inductor 4 is located between the two second positioning shells 2 and is locked and positioned by a second locking bolt 23, the vertically corresponding first positioning shells 1 and second positioning shells 2 are connected by a vertical connecting bolt 16, and two vertical connecting through holes 32 are respectively provided on the printed circuit board 3 at the outer sides of the two ends of the inductor through hole 31, and four vertical connecting bolts 16 pass through the four connecting through holes 32 respectively.

[0018] like Figure 1 and Figure 2 As shown, the utility model also discloses the following more optimized specific structures:

[0019] In order to stably and reliably position and install the toroidal inductor 4 and facilitate processing and assembly, the first positioning shell 1 is provided with a vertically penetrating through hole, and one side of the through hole is closed and the other side is open. The inner wall surfaces at the two lateral ends of the first positioning shell 1 are arc-shaped surfaces, and the upper width between the two arc-shaped surfaces is smaller than the lower width. The inner walls at the two lateral ends of the first positioning shell 1 are respectively tightly provided with first end thermal conductive rubber pads 11, and the inner wall of the lateral closed side of the first positioning shell 1 is tightly provided with a first side thermal conductive rubber pad 12. The shell walls at the two lateral ends of the first positioning shell 1 are respectively provided with screw holes, and first locking bolts 13 are installed in the screw holes. The screw ends of the first locking bolts 13 support the corresponding first end thermal conductive rubber pads 11. The upper part of the toroidal inductor 4 is simultaneously located between the two lateral ends of the first positioning shells 1 and between the two closed sides of the first positioning shells 1 and are respectively connected to the two first side thermal conductive rubber pads 12 and the four The first end portion is in contact with the thermally conductive rubber pad 11; the second positioning shell 2 is provided with a vertically penetrating through hole, and one side of the through hole is closed and the other side is open. The inner wall surfaces at the two lateral ends of the second positioning shell 2 are arc-shaped surfaces, and the lower width between the two arc-shaped surfaces is smaller than the upper width. The inner walls at the two lateral ends of the second positioning shell 2 are respectively tightly provided with second end thermally conductive rubber pads 21, and the inner wall of the lateral closed side of the second positioning shell 2 is tightly provided with a second side thermally conductive rubber pad 22. The shell walls at the two lateral ends of the second positioning shell 2 are respectively provided with screw holes, and second locking bolts 23 are installed in the screw holes. The screw ends of the second locking bolts 23 support the corresponding second end thermally conductive rubber pads 21. The lower part of the annular inductor 4 is simultaneously located between the two lateral ends of the second positioning shells 2 and between the two closed sides of the second positioning shells 2 and is respectively in contact with the two second side thermally conductive rubber pads 22 and the four second end thermally conductive rubber pads 21.

[0020] In order to facilitate the connection of the corresponding positioning shells, the lower parts of the outer walls at the two lateral ends of the first positioning shell 1 extend outwards to form the first shell connecting parts 14, and the corresponding two first shell connecting parts 14 at the two lateral ends of the two first positioning shells 1 are connected by the first lateral connecting bolts 15, and the lower parts of the outer walls at the two lateral ends of the second positioning shell 2 extend outwards to form the second shell connecting parts 24, and the corresponding two second shell connecting parts 24 at the lateral ends of the two second positioning shells 2 are connected by the second lateral connecting bolts 25, and the vertically corresponding first shell connecting parts 14 and second shell connecting parts 24 are connected by the vertical connecting bolts 16.

[0021] In order to facilitate the connection of the corresponding first positioning housing 1 and the second positioning housing 2 , the screw rods of the four vertical connection bolts 16 pass through the four connection through holes 32 from top to bottom respectively and the lower ends thereof are connected to the four nuts 26 respectively.

[0022] For ease of application, the two first end thermal conductive rubber pads 11 and the first side thermal conductive rubber pads 12 in the same first positioning shell 1 are interconnected and integrally formed, and the two second end thermal conductive rubber pads 21 and the second side thermal conductive rubber pads 22 in the same second positioning shell 2 are interconnected and integrally formed.

[0023] In order to facilitate the adjustment of the distance between the two first positioning shells 1 and the two second positioning shells 2 to accommodate the installation of annular inductors 4 of different sizes, the connecting through hole 32 is a strip through hole and the length direction of the strip through hole is parallel to the axial direction of the central through hole of the annular inductor 4.

[0024] like Figure 1 and Figure 2 As shown, when used, first place the two second positioning housings 2 below the printed circuit board 3, then pass the lower part of the annular inductor 4 from top to bottom through the inductor through-hole 31 on the printed circuit board 3 and make it located between the two ends of the two second positioning housings 2 and between the two closed sides, then place the two first positioning housings 1 above the printed circuit board 3, so that the upper part of the annular inductor 4 is located between the two ends of the two first positioning housings 1 and between the two closed sides; the screws of the four vertical connecting bolts 16 are respectively passed through the four connecting through-holes 32 from top to bottom and the lower ends thereof are respectively connected to the four nuts 26 but not tightened first, the two first transverse connecting bolts 15 are respectively connected between the first housing connecting parts 14 at the two ends of the two first positioning housings 1 and slowly tightened, and the two second transverse connecting bolts 16 are respectively connected between the first housing connecting parts 14 at the two ends of the two first positioning housings 1 and slowly tightened, and the two second transverse connecting bolts 16 are respectively connected between the first housing connecting parts 14 at the two ends of the two first positioning housings 1 and slowly tightened. The bolts 25 are respectively connected between the second shell connection parts 24 at both ends of the two second positioning shells 2 and slowly tightened; then the four vertical connection bolts 16 and the four nuts 26 are slowly tightened; finally, the four first locking bolts 13 are slowly tightened and pressed against the corresponding first end thermal conductive rubber pad contacts 11, and the four second locking bolts 23 are slowly tightened and pressed against the corresponding second end thermal conductive rubber pad contacts 21. At this time, the upper part of the annular inductor 4 is in close contact with the four first end thermal conductive rubber pad contacts 11 and the two first side thermal conductive rubber pads 12 and is positioned, and the lower part of the annular inductor 4 is in close contact with the four second end thermal conductive rubber pad contacts 21 and the two second side thermal conductive rubber pads 22 and is positioned, completing the hollow connection between the annular inductor 4 and the printed circuit board. When applied, the device is installed in the inner cavity of an electronic device through other components, which can achieve a smaller occupied space and can be used in a vibration environment.

[0025] The above embodiments are only preferred embodiments of the present utility model and are not limitations on the technical solutions of the present utility model. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present utility model.

Claims

1. A hollow connection device for a toroidal inductor and a printed circuit board, comprising a toroidal inductor and a printed circuit board, wherein the printed circuit board is provided with an inductor through-hole, and the toroidal inductor passes through the inductor through-hole, characterized in that: The hollow connection device between the annular inductor and the printed circuit board also includes a first positioning shell and a second positioning shell. With the plane direction of the printed circuit board as the horizontal direction, the two first positioning shells are located above the printed circuit board, and the two first positioning shells are connected by a first horizontal connecting bolt. The upper part of the annular inductor is located between the two first positioning shells and is locked and positioned by a first locking bolt. The two second positioning shells are located below the printed circuit board, and the two second positioning shells are connected by a second horizontal connecting bolt. The lower part of the annular inductor is located between the two second positioning shells and is locked and positioned by a second locking bolt. The first positioning shell and the second positioning shell corresponding to each other in the vertical direction are connected by vertical connecting bolts. Two vertical connecting through holes are respectively provided on the printed circuit board at the outer sides of the two ends of the inductor through hole, and four of the vertical connecting bolts pass through the four connecting through holes respectively.

2. The hollow connection device between a toroidal inductor and a printed circuit board according to claim 1, characterized in that: The first positioning shell is provided with a through hole which passes vertically and is closed on one lateral side and open on the other lateral side; the inner wall surfaces at the two lateral ends of the first positioning shell are arc-shaped surfaces and the upper width between the two arc-shaped surfaces is smaller than the lower width; the inner walls at the two lateral ends of the first positioning shell are respectively tightly provided with first end heat-conducting rubber pads; the inner wall of the lateral closed side of the first positioning shell is tightly provided with first side heat-conducting rubber pads; the shell walls at the two lateral ends of the first positioning shell are respectively provided with screw holes and the first locking bolts are installed in the screw holes; the screw ends of the first locking bolts bear against the corresponding first end heat-conducting rubber pads; the upper part of the annular inductor is simultaneously located between the two lateral ends of the first positioning shells and between the two closed sides of the first positioning shells and is respectively in contact with the two first side heat-conducting rubber pads and the four first end heat-conducting rubber pads; The second positioning shell is provided with a vertically penetrating through hole, and one lateral side of the through hole is closed and the other lateral side is open. The inner wall surfaces at the lateral ends of the second positioning shell are arc-shaped surfaces, and the lower width between the two arc-shaped surfaces is smaller than the upper width. The inner walls at the lateral ends of the second positioning shell are respectively tightly provided with second end heat-conducting rubber pads, and the inner wall of the lateral closed side of the second positioning shell is tightly provided with second side heat-conducting rubber pads. The shell walls at the lateral ends of the second positioning shell are respectively provided with screw holes, and the second locking bolts are installed in the screw holes. The screw ends of the second locking bolts support the corresponding second end heat-conducting rubber pads. The lower part of the annular inductor is simultaneously located between the lateral ends of the two second positioning shells and between the closed sides of the two second positioning shells, and is respectively in contact with the two second side heat-conducting rubber pads and the four second end heat-conducting rubber pads.

3. The hollow connection device between a toroidal inductor and a printed circuit board according to claim 2, characterized in that: The lower parts of the outer walls at the two lateral ends of the first positioning shell extend outwards to form a first shell connection part, and the corresponding two first shell connection parts at the two lateral ends of the two first positioning shells are connected by the first lateral connection bolts, and the lower parts of the outer walls at the two lateral ends of the second positioning shell extend outwards to form a second shell connection part, and the corresponding two second shell connection parts at the lateral ends of the two second positioning shells are connected by the second lateral connection bolts, and the vertically corresponding first shell connection parts and second shell connection parts are connected by the vertical connection bolts.

4. The hollow connection device for a toroidal inductor and a printed circuit board according to claim 3, characterized in that: The screw rods of the four vertical connection bolts pass through the four connection through holes from top to bottom respectively, and the lower ends thereof are connected to four nuts respectively.

5. The hollow connection device for a toroidal inductor and a printed circuit board according to claim 2, 3 or 4, characterized in that: The two first end thermal conductive rubber pads and the first side thermal conductive rubber pad in the same first positioning shell are interconnected and integrally formed, and the two second end thermal conductive rubber pads and the second side thermal conductive rubber pad in the same second positioning shell are interconnected and integrally formed.

6. The hollow connection device for a toroidal inductor and a printed circuit board according to claim 1, 2, 3 or 4, characterized in that: The connecting through hole is a strip-shaped through hole, and the length direction of the strip-shaped through hole is parallel to the axial direction of the central through hole of the annular inductor.

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