Annular inductive mounting assembly based on a bayonet connection

Abstract

The utility model discloses a kind of annular inductance installation components based on card pin connection, including nonmetal base and nonmetal support, the upper two ends of base form support arm, the lower end of one or more supports is connected with support arm, the outer diameter of lower part of support is reduced to form support connecting section, the middle lower section of support connecting section is equipped with "U" groove and support blind hole, the aperture of support blind hole is greater than the width of "U" groove, installation through-hole is equipped on support arm, support connecting section is placed in installation through-hole, card pin is inserted into support blind hole from bottom to top and support connecting section is tightly pressed on the hole wall of installation through-hole.The utility model realizes the reliable connection of support and base under the premise of not using screw and nut, to realize that there is no metal completely to avoid the problem of causing interference to the coil current of annular inductance, improve electrical accuracy, meet the application demand of high-precision electronic product.

Description

Technical Field

[0001] This utility model relates to a ring inductor mounting assembly, and more particularly to a ring inductor mounting assembly based on a snap-fit ​​connection. Background Technology

[0002] Toroidal inductors are widely used in electronic products such as filters. Due to their large size and heavy weight, they generally require a special toroidal inductor mounting assembly to be mounted on the printed circuit board or the base plate of the housing. In order to facilitate the fixing of the toroidal inductor leads, the toroidal inductor mounting assembly usually includes one or more brackets with cable tie holes.

[0003] like Figure 1 As shown, a conventional toroidal inductor mounting assembly includes a conventional base 1 and a conventional bracket 5. The conventional base 1 has a conventional inductor groove 2 for mounting the toroidal inductor in the upper middle part, and conventional bracket arms 3 for mounting the conventional bracket 5 at both ends. The lower ends of one or more conventional brackets are connected to the conventional bracket arms. The conventional bracket 5 has cable tie holes 4 for binding the inductor wires. In order to avoid short circuits and other electrical interference to the toroidal inductor, both the conventional base 1 and the conventional bracket 5 are made of insulating materials such as plastic.

[0004] The aforementioned traditional toroidal inductor mounting assembly has the following drawbacks: Since it is difficult to achieve a reliable threaded connection with plastic parts, multiple screws are typically passed through the corresponding through holes on the traditional bracket 5 and the traditional base 1 and then fixed with nuts to achieve a reliable connection between the traditional bracket 5 and the traditional base 1. This connection method results in the metal screws and nuts being close to the coil of the toroidal inductor, which can easily cause interference with the coil current of the toroidal inductor. For electronic products with high precision requirements, this may reduce electrical accuracy and fail to meet application needs. Utility Model Content

[0005] The purpose of this invention is to provide a ring inductor mounting assembly that does not use screws and nuts for connection, but is based on snap-fit ​​connection to solve the above problems.

[0006] This utility model achieves the above objectives through the following technical solutions: A ring inductor mounting assembly based on a snap-fit ​​connection includes a non-metallic base and a non-metallic bracket. The base has an inductor groove for mounting the ring inductor in the upper center and bracket arms at both ends for mounting the bracket. The lower ends of one or more brackets are connected to the bracket arms. The lower outer diameter of the bracket decreases to form a bracket connecting section. The cross-section of the bracket connecting section is non-circular. The lower middle section of the bracket connecting section has a transversely through "U"-shaped groove with an open lower end. The lower middle section of the bracket connecting section also has a bracket blind hole with an open lower end. The diameter of the bracket blind hole is larger than the width of the "U"-shaped groove. The centerline of the bracket blind hole coincides with the vertical centerline of the "U"-shaped groove. The bracket arm has a vertically through mounting hole with a non-circular cross-section. The bracket connecting section is placed in the mounting hole. A non-metallic snap-fit ​​pin with a vertical axial direction is inserted into the bracket blind hole from bottom to top and presses the bracket connecting section against the hole wall of the mounting hole.

[0007] Preferably, in order to provide a more reliable vertical positioning function for the bracket, the outer groove walls on both sides of the "U"-shaped groove are respectively provided with concave slots near the lower end. The outer groove wall surfaces on both sides of the lower end of the "U"-shaped groove are inclined surfaces that slope inward from top to bottom. The mounting through hole wall is provided with protruding locking platforms on opposite sides, and the two locking platforms are respectively placed in the two locking slots.

[0008] Preferably, in order to achieve a better limiting function for the bracket, a limiting countersunk hole for limiting the bracket is provided on the upper part of the bracket arm at the position of the outer periphery of the mounting through hole.

[0009] The beneficial effects of this utility model are as follows: This invention achieves a reliable connection between the bracket and the base without the use of screws and nuts by setting a bracket connecting section with a smaller outer diameter at the lower part of the bracket, setting a "U"-shaped groove on the bracket connecting section, and setting a mounting through hole on the bracket arm of the base. The bracket connecting section is placed in the mounting through hole and locked with a locking pin. This completely eliminates the need for metal to avoid interference with the coil current of the toroidal inductor, improves electrical accuracy, and meets the application requirements of high-precision electronic products. Attached Figure Description

[0010] Figure 1 This is a 3D view of a traditional toroidal inductor mounting assembly; Figure 2 This is a three-dimensional exploded view of the ring inductor mounting assembly based on pin connection described in this utility model before assembly; Figure 3 This is a perspective view of the base of the ring inductor mounting assembly based on pin connection described in this utility model; Figure 4This is a perspective view of the bracket of the ring inductor mounting assembly based on pin connection described in this utility model; Figure 5 This is a front sectional view of the assembled ring inductor mounting assembly based on pin connection according to this utility model. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings: like Figures 2-5 As shown, the ring inductor mounting assembly based on snap-fit ​​connection of this utility model includes a non-metallic base 7 and a non-metallic bracket 9. The upper center of the base 7 is provided with an inductor groove 6 for mounting a ring inductor (not shown in the figure), and the two ends form bracket arms 8 for mounting the bracket 9. The lower ends of one or more (two in the figure) brackets 9 are connected to the bracket arms 8. The lower outer diameter of the bracket 9 is reduced to form a bracket connecting section 11. The transverse cross section of the bracket connecting section 11 is non-circular (a square with rounded corners in the figure). The lower middle section of the bracket connecting section 11 has a transverse through-hole. Furthermore, the lower end of the "U"-shaped groove 12 is open, and the lower middle section of the bracket connecting section 11 is also provided with a bracket blind hole 18 with an open lower end. The diameter of the bracket blind hole 18 is larger than the width of the "U"-shaped groove 12. The center line of the bracket blind hole 18 coincides with the vertical center line of the "U"-shaped groove 12. The bracket arm 8 is provided with a vertical through hole 14 with a non-circular cross section. The bracket connecting section 11 is placed in the mounting through hole 14. A non-metallic and vertically oriented locking pin 15 is inserted into the bracket blind hole 18 from bottom to top and presses the bracket connecting section 11 against the hole wall of the mounting through hole 14.

[0012] As a preferred embodiment, in order to provide a more reliable vertical positioning function for the bracket 9, the outer groove walls on both sides of the "U"-shaped groove 12 are respectively provided with concave grooves 13 near the lower end. The outer groove wall surfaces on both sides of the lower end of the "U"-shaped groove 12 are inclined surfaces that slope inward from top to bottom. The hole wall of the mounting through hole 14 is provided with protruding locking platforms 17 on opposite sides, and the two locking platforms 17 are respectively placed in the two locking grooves 13. In order to achieve a better limiting function for the bracket 9, the upper part of the bracket arm 8 is provided with a limiting countersunk hole 16 for limiting the bracket 9 at the position of the outer periphery of the mounting through hole 14.

[0013] Figure 2 , Figure 4 and Figure 5 The binding hole 10 on the bracket 9 is also shown; it is a conventional structure.

[0014] like Figures 2-5As shown, during assembly, the bracket connecting section 11 of the bracket 9 is inserted downward into the mounting through hole 14. When the lower end of the bracket connecting section 11 contacts the locking platform 17, the inclined surfaces of the outer groove walls on both sides of the lower end of the "U"-shaped groove 12 are used to press the two groove walls of the "U"-shaped groove 12 inward until the two locking platforms 17 correspond to the positions of the two locking slots 13 respectively. The two groove walls of the "U"-shaped groove 12 separate and reset under their own elasticity, and the two locking platforms 17 fall into the two locking slots 13 respectively. At this time, the bracket 9 cannot move vertically. At this time, the lower part of the bracket 9 near the bracket connecting section 11 is also placed in the limiting countersunk hole 16. At the same time, due to the non-circular fit between the bracket 9 and the mounting through hole 14, the bracket 9 cannot rotate circumferentially. Then, the locking pin 15 is inserted into the bracket blind hole 18 from bottom to top, pressing the outer wall of the bracket connecting section 11 against the hole wall of the mounting through hole 14, further ensuring that the bracket 9 is tightly connected to the base, thus completing the assembly of the entire ring inductor mounting assembly. After assembly, on the one hand, there is a large static friction between the locking pin 15 and the wall of the blind hole 18 in the bracket, preventing the locking pin 15 from easily coming off. On the other hand, the toroidal inductor mounting assembly is placed on a separate mounting platform during use, which also prevents the locking pin 15 from coming off, thus ensuring the stability of the entire assembly. Since there is no metal present, this assembly avoids interference with the coil current of the toroidal inductor.

[0015] Note: The base 7, inductor slot 6, support arm 8, support 9, and binding hole 10 mentioned above correspond one-to-one with the traditional base 1, traditional inductor slot 2, traditional support arm 3, traditional support 5, and cable tie hole 4 in the background art content. Because the relevant structures have changed, different component names and marking numbers have been used.

[0016] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A ring inductor mounting assembly based on a snap-fit ​​connection, comprising a non-metallic base and a non-metallic bracket, wherein the base has an inductor groove for mounting a ring inductor at its upper center and bracket arms at both ends for mounting the bracket, and the lower ends of one or more brackets are connected to the bracket arms, characterized in that: The lower outer diameter of the bracket decreases to form a bracket connecting section. The cross-section of the bracket connecting section is non-circular. The lower middle section of the bracket connecting section has a transversely through "U"-shaped groove with an open lower end. The lower middle section of the bracket connecting section also has a bracket blind hole with an open lower end. The diameter of the bracket blind hole is larger than the width of the "U"-shaped groove. The center line of the bracket blind hole coincides with the vertical center line of the "U"-shaped groove. The bracket arm has a vertically through mounting hole with a non-circular cross-section. The bracket connecting section is placed in the mounting hole. A non-metallic, vertically oriented locking pin is inserted into the bracket blind hole from bottom to top and presses the bracket connecting section against the wall of the mounting hole.

2. The ring inductor mounting assembly based on pin connection according to claim 1, characterized in that: The outer walls of the "U"-shaped groove on both sides are provided with concave grooves near the lower end. The outer walls of the lower end of the "U"-shaped groove are inclined surfaces that slope inward from top to bottom. The walls of the mounting through hole are provided with protruding mounting platforms on opposite sides. The two mounting platforms are placed in the two grooves respectively.

3. The ring inductor mounting assembly based on pin connection according to claim 1 or 2, characterized in that: The upper part of the support arm is provided with a limiting countersunk hole located on the outer periphery of the mounting through hole for limiting the support.

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