CN212967977U

CN212967977U - Straight needle type filter

Info

Publication number: CN212967977U
Application number: CN202021172969.4U
Authority: CN
Inventors: 马国强; 翟振卫; 王先权; 苏相河; 覃宗爱; 张金锁; 王常辉; 易志福
Original assignee: Huizhou U&t Electronics Co ltd
Current assignee: Huizhou U&t Electronics Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-04-13
Anticipated expiration: 2030-06-22

Abstract

The utility model discloses a straight needle formula wave filter is provided with the protection sleeve spare, exhausts external member, winding group and pin group, the setting of buckle spare and the seting up of buckle groove, and buckle spare can the joint in the buckle groove for the lid can be stably covered and locate on the drain pan, compares and adopts solidification black glue to carry out the embedment in prior art, and this application can prevent well that the coil from jumping and breaking because of the expansion coefficient of black glue; in addition, due to the arrangement of the skylight hole and the arrangement of the exhaust cover, when the air pressure in the straight-needle filter expands due to high temperature, the expanded air can push the exhaust cover to exhaust in time, so that the exhaust treatment can be completed while the heat dissipation is completed, and the damage of the straight-needle filter is prevented; moreover, the setting of reference column and the seting up of location blind hole, the output that can greatly increased assembler can increase the enterprise to a certain extent.

Description

Straight needle type filter

Technical Field

The utility model relates to a wave filter field especially relates to a straight needle formula wave filter.

Background

With the rapid development of the wireless communication industry, the filter used for filtering the unwanted signals becomes one of the essential key components in the communication system, for example, in the radio frequency system, the filter can play a role of frequency selection, so that the specified frequency signals can pass through and reflect the unwanted interfering frequency signals, thereby realizing the communication function. According to different installation modes, the filter can be roughly divided into a straight needle type filter and a patch type filter, wherein the straight needle type filter is installed on a PCB in a plug-in mode, the patch type filter is installed on the PCB by adopting an SMT process, and the working principles of the straight needle type filter and the patch type filter are not different.

Taking a straight pin filter as an example, the conventional straight pin filter has the following defects:

the problem I is that most of the existing straight-pin type filters are packaged in a mode of curing black glue encapsulation, but due to the fact that the black glue has an expansion coefficient, enameled wires in the straight-pin type filters are prone to being broken under the conditions of thermal expansion and cold contraction;

secondly, based on the background of the first problem, although the cured black glue can improve the overall sealing performance of the straight pin type filter, another problem is caused, namely the cured black glue often causes the reduction of the heat dissipation capability of the straight pin type filter, if the internal temperature of the straight pin type filter is too high, the internal gas expands, and the straight pin type filter is very easily damaged under the condition;

problem three, current straight pin type filter, it does not structurally set up relevant prepositioning structure, can't assemble straight pin type filter fast, and then leads to the assembly inefficiency, is unfavorable for the output of enterprise.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, provide a lid and drain pan adopt buckle formula to connect, be difficult to lead to the coil to jump absolutely, can prevent that inside temperature is too high, in time carminative and easy straight needle formula wave filter of assembly personnel assembly.

The purpose of the utility model is realized through the following technical scheme:

a straight-pin filter comprising:

the protective sleeve comprises a cover body, a bottom shell, two positioning columns and two buckling pieces, wherein a skylight hole is formed in the cover body, the positioning columns are arranged on the cover body, two positioning blind holes and two buckling grooves are formed in the bottom shell, the buckling pieces are arranged on the cover body, and the cover body is used for covering the bottom shell so that the positioning columns are correspondingly inserted into the positioning blind holes one by one and the buckling pieces are correspondingly clamped in the buckling grooves one by one, so that the cover body and the bottom shell jointly form a sealed cavity;

the exhaust sleeve comprises a rotating shaft and an exhaust cover, the rotating shaft is rotatably arranged in the skylight hole, and the exhaust cover is arranged on the rotating shaft;

the winding group comprises a plurality of magnetic rings and a plurality of coils, each magnetic ring is arranged in the sealed cavity, and the coils are wound on the magnetic rings in a one-to-one correspondence manner; and

the lead group comprises a plurality of cylindrical feet, each cylindrical foot is arranged on the bottom shell, and the cylindrical feet are connected with the coils in a one-to-one correspondence mode.

In one embodiment, each of the cylindrical legs is provided with a lightening hole.

In one embodiment, the pin group further includes a plurality of reinforcing ribs, and each reinforcing rib is disposed in each weight-reduction hole in a one-to-one correspondence manner.

In one embodiment, the diameter of each cylindrical leg gradually decreases toward a direction away from the bottom case.

In one embodiment, an arc guiding annular edge portion is arranged on a position, away from the bottom shell, of each cylindrical leg.

In one embodiment, the straight pin filter further includes an identification member disposed on the cover.

In one embodiment, the bottom case has two avoiding grooves formed at the positions of the side walls.

In one embodiment, the cover and the two fasteners are integrally formed.

In one embodiment, the two buckling pieces are axially symmetrically distributed with the central axis of the cover body, and the two buckling grooves are axially symmetrically distributed with the central axis of the bottom shell.

In one embodiment, both of the positioning blind holes are round holes.

Compared with the prior art, the utility model discloses advantage and beneficial effect below having at least:

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a straight pin filter according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a straight-pin filter at another viewing angle according to an embodiment of the present invention;

fig. 3 is an enlarged schematic view at a of fig. 2.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, a straight pin filter 10 includes a protective sheath 100, an exhaust sheath 200, a winding set 300, and a pin set 400.

As such, it should be noted that the protection cover 100 plays a role of protection, and is used for protecting the internal components of the straight pin filter 10; the exhaust kit 200 is used for performing exhaust processing in cooperation with a related exhaust structure, so as to complete heat dissipation and exhaust of the straight pin filter 10 and prevent an internal temperature and an internal pressure of the straight pin filter 10 from being too high; the winding group 300 plays the roles of impedance matching, high-voltage isolation and common-mode signal suppression; the pin group 400 functions as a connection for connecting the straight pin filter 10 with an external product.

Referring to fig. 1 and fig. 2, the protective cover 100 includes a cover 110, a bottom shell 120, two positioning columns 130 and two fastening members 140, the cover 110 has a top window 111, each positioning column 130 is disposed on the cover 110, the bottom shell 120 has two positioning blind holes 121 and two fastening grooves 122, each fastening member 140 is disposed on the cover 110, the cover 110 is used to cover the bottom shell 120, so that the positioning columns 130 are inserted into the positioning blind holes 121 one by one, and the fastening members 140 are fastened into the fastening grooves 122 one by one, thereby the cover 110 and the bottom shell 120 together form a sealed cavity.

In this way, it should be noted that both the cover 110 and the bottom case 120 play a role of protection, protecting internal components of the straight pin filter 10; due to the arrangement of the positioning columns 130 and the arrangement of the positioning blind holes 121, the assembly efficiency of assembly personnel can be greatly increased, and the output of an enterprise can be increased to a certain extent; the setting of buckle piece 140 and the seting up of buckle groove 122, buckle piece 140 can the joint in buckle groove 122 for lid 110 can be stably covered and locate on drain pan 120, compares and adopts the solidification blackgel to carry out the embedment in prior art, and this application can prevent well that the coefficient of expansion because of the blackgel leads to the coil to jump absolutely.

Referring to fig. 1, the exhaust kit 200 includes a rotating shaft rotatably installed in the skylight opening 111, and an exhaust cover 210 disposed on the rotating shaft.

In this way, when the air pressure inside the straight pin filter 10 expands due to high temperature, the opening of the sunroof hole 111 and the installation of the exhaust cover 210 allow the expanded air to push the exhaust cover 210 to exhaust, thereby completing heat dissipation and exhaust treatment, and preventing the straight pin filter 10 from being damaged.

Referring to fig. 2, the winding set 300 includes a plurality of magnetic rings 310 and a plurality of coils, each magnetic ring 310 is disposed in the sealed cavity, and each coil is wound on each magnetic ring 310 in a one-to-one correspondence.

Thus, it should be noted that the magnetic ring 310 and the coil together perform impedance matching, high voltage isolation, and common mode signal rejection.

It should be noted that, in the prior art, since the cured black glue is used for encapsulation, since the cured black glue has a certain expansion coefficient, expansion with heat and contraction with cold easily occur, and if this occurs, the cured black glue easily causes the coil to break, which results in damage to the straight pin filter 10.

Referring to fig. 1, the lead group 400 includes a plurality of cylindrical legs 410, each cylindrical leg 410 is disposed on the bottom case 120, and each cylindrical leg 410 is connected to each coil in a one-to-one correspondence.

Thus, it should be noted that the plurality of cylindrical pins 410 each serve as a connection for connecting the straight pin filter 10 with an external product.

Further, referring to fig. 3, in one embodiment, each of the cylindrical legs 410 is provided with a lightening hole 411.

Thus, it should be noted that the lightening holes 411 can play a role in lightening the weight of the cylindrical pin 410, and the number of the lightening holes 411 is not too large, otherwise the overall mechanical strength of the cylindrical pin 410 is affected, and the preferred number is 1.

Further, referring to fig. 3 again, in an embodiment, the lead set 400 further includes a plurality of reinforcing ribs 420, and the reinforcing ribs 420 are disposed in the weight-reducing holes 411 in a one-to-one correspondence manner.

In this way, the provision of the rib 420 can improve the mechanical strength of the entire column base 410, and prevent the mechanical strength of the entire column base 410 from being reduced by the opening of the lightening hole 411.

Further, referring to fig. 3 again, in one embodiment, the diameter of each of the cylindrical legs 410 is gradually decreased toward a direction away from the bottom case 120.

In this way, it should be noted that the diameter of each cylindrical pin 410 gradually decreases toward the direction away from the bottom case 120, and this design enables the straight pin filter 10 to be more easily connected with an external product.

Further, referring to fig. 3 again, in one embodiment, each of the cylindrical legs 410 is provided with an arc-guiding annular edge portion 412 at a position away from the bottom case 120.

In this way, the provision of the arc-guiding ring edge portion 412 can prevent the cylindrical leg 410 from being damaged due to excessive physical contact between the cylindrical leg 410 and an external product, that is, the arc-guiding ring edge portion 412 plays a role of protecting the cylindrical leg 410.

Further, referring to fig. 1 again, in an embodiment, the straight pin filter 10 further includes a mark 500, and the mark 500 is disposed on the cover 110.

Thus, it should be noted that the identifier 500 serves as a label, and the cylindrical pin 410 near the identifier 500 is the 1 st pin position of the straight pin filter 10.

Further, referring to fig. 2 again, in one embodiment, the bottom case 120 is provided with two avoiding grooves 123 at the side wall positions.

Therefore, it should be noted that the position of the avoiding groove 123 is aligned with the position of the fastening element 140, when the cover 110 is covered on the bottom case 120, the fastening element 140 firstly penetrates through the avoiding groove 123, and finally is fastened in the fastening groove 122, and the avoiding groove 123 is formed to make the overall structure of the straight-pin filter 10 more compact.

Further, in an embodiment, the cover 110 and the two fasteners 140 are integrally formed.

In this way, the design that the cover 110 and the two fasteners 140 are integrally formed can improve the overall mechanical strength of the cover 110 and the two fasteners, and prolong the service life of the cover 110 and the two fasteners.

Further, in an embodiment, the two locking members 140 are axially symmetrically distributed about the central axis of the cover 110, and the two locking grooves 122 are axially symmetrically distributed about the central axis of the bottom case 120.

In this way, it should be noted that, due to the axisymmetric distribution design, when the cover 110 is covered on the bottom casing 120, the acting force is uniformly applied to the cover 110 and the bottom casing 120, so that the cover 110 can be stably covered on the bottom casing 120.

Specifically, in one embodiment, both positioning blind holes are round holes.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A straight-pin filter, comprising:

2. The straight pin filter of claim 1, wherein each of the cylindrical legs has a lightening hole.

3. The straight pin filter of claim 2, wherein the pin set further comprises a plurality of reinforcing ribs, and each reinforcing rib is disposed in each weight-reduction hole in a one-to-one correspondence.

4. The straight pin filter of claim 2, wherein the diameter of each cylindrical leg decreases in a direction away from the bottom case.

5. The straight pin filter of claim 2, wherein a conducting arc annular edge portion is disposed on a position of each cylindrical pin far away from the bottom case.

6. The straight pin filter of claim 1, further comprising an identifier disposed on the cover.

7. The straight-needle filter according to claim 1, wherein the bottom housing has two avoiding grooves formed on the side wall thereof.

8. The straight pin filter of claim 1, wherein the cover and the two clasps are integrally formed.

9. The straight pin filter of claim 1, wherein the two locking members are axially symmetrically distributed about a central axis of the cover, and the two locking grooves are axially symmetrically distributed about a central axis of the bottom case.

10. The straight-needle filter according to claim 1, wherein both of the positioning blind holes are round holes.