CN215894673U - Contact-type punching filter insertion loss test fixture - Google Patents
Contact-type punching filter insertion loss test fixture Download PDFInfo
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- CN215894673U CN215894673U CN202121015324.4U CN202121015324U CN215894673U CN 215894673 U CN215894673 U CN 215894673U CN 202121015324 U CN202121015324 U CN 202121015324U CN 215894673 U CN215894673 U CN 215894673U
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- box body
- shielding box
- insertion loss
- test fixture
- feedthrough filter
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Abstract
The utility model provides a contact type feedthrough filter insertion loss test fixture which comprises a shielding box body, wherein electrode connectors are arranged on two sides of the shielding box body in the length direction, a pushing device is arranged in the shielding box body in the length direction and can move along the length direction of the shielding box body, an accommodating cavity for accommodating a feedthrough filter is formed between the front end of the pushing device in the moving direction and the inner wall of the shielding box body, a first electrode connector is arranged on one side, close to the accommodating cavity, of the shielding box body, a second electrode connector is arranged on the pushing device, and two ends of the feedthrough filter are respectively connected with the first electrode connector and the second electrode connector; the insertion loss test fixture for the feedthrough filter is applicable to products with various appearance sizes, has high test efficiency and accurate test result, and does not damage the products after test.
Description
Technical Field
The utility model relates to the technical field of capacitors, in particular to a contact type feed-through filter insertion loss test fixture.
Background
The appearance structure of the feedthrough filter mainly comprises a metal shell and a metal lead, the feedthrough filter can be divided into a welding type and a thread type from the mounting structure, and the external diameter and the thread size of the feedthrough filter are different according to different application occasions.
When the insertion loss of the feed-through filter is tested, a product is fixed on a partition plate in the middle of a clamp, then leads are welded at two ends of a lead of the product to be led out, and then a cover plate is covered for testing; the conventional punching filter test fixture is usually fixed in structure, only one punching filter with one size can be tested, if the clamping and fixing requirements of punching filters with different sizes are required to be met, different partition plates are required to be processed for mounting the punching filters with different sizes; the test cost and the test workload are increased, the shielding effect of the test fixture is poor, and the consistency and the accuracy of the test result are influenced. In addition, lead welding is required to be carried out before testing in the prior art, soldering tin exists on a sample lead after testing, selling of products is influenced, and economic benefits of enterprises are reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the conventional feedthrough filter is inconvenient to mount and dismount during insertion loss test and has low test efficiency, and provides the feedthrough filter insertion loss test fixture which is compatible with products with various external dimensions, has high test efficiency and accurate test result and does not damage the products after test.
The embodiment of the utility model is realized by the following technical scheme:
a contact-type cross-core filter insertion loss test fixture comprises a shielding box body, electrode connectors are installed on two sides of the length direction of the shielding box body, a pushing device is arranged in the length direction of the shielding box body and can move along the length direction of the shielding box body, an accommodating cavity for accommodating the cross-core filter is formed between the front end of the moving direction of the pushing device and the inner wall of the shielding box body,
one side of the shielding box body close to the containing cavity is provided with a first electrode joint, the pushing device is provided with a second electrode joint, and two ends of the feed-through filter are respectively connected with the first electrode joint and the second electrode joint.
Further, the pushing device comprises a pushing plate, a pushing rod and a compression spring,
one end of the push rod penetrates through the inner wall of the shielding box body, and the other end of the push rod is connected with the push plate;
the compression spring is arranged on the push rod, one end of the compression spring is abutted against the push plate, and the other end of the compression spring is abutted against the inner wall of the shielding box body;
the second electrode joint is arranged on one side of the push plate, which is far away from the containing cavity.
Further, the bottom wall of the shielding box body is provided with a sliding groove, the bottom of the push plate is provided with a sliding block, and the sliding block can slide along the sliding groove.
Further, the bottom wall of the shielding box body is further provided with a limiting baffle which is arranged on one side of the shielding box body far away from the containing cavity and located on the outer side of the sliding groove.
Furthermore, the shielding box body is provided with one side of the first electrode joint and the push plate is provided with through holes for the lead of the feedthrough filter to penetrate out.
Furthermore, a shielding cover plate used for sealing the shielding box body is further arranged on the shielding box body.
Further, the shielding box body and the shielding cover plate are both made of insulating materials.
The technical scheme of the embodiment of the utility model at least has the following advantages and beneficial effects:
according to the utility model, the accommodating cavities with different sizes can be formed only by adjusting the distance between the pushing device and the inner wall of the shielding box body, so that the stable clamping test requirements of the feedthrough filters with different sizes can be met, the clamp is convenient to mount and dismount, and two sides of the housing of the feedthrough filter are respectively contacted with the shielding box body and the pushing device, so that the effect of grounding shielding is achieved; in addition, the lead wires at the two ends of the feedthrough filter do not need to be welded, and the lead wires are directly inserted into the first electrode connectors and the second electrode connectors at the two sides, so that the direct insertion type installation of the connectors is adopted, and the installation efficiency and the operation convenience are greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed 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 contact feedthrough filter insertion loss test fixture according to an embodiment of the present invention;
fig. 2 is a front view of a contact feedthrough filter insertion loss test fixture according to an embodiment of the present invention.
Icon: the device comprises a lead 1, a shielding box 2, a sliding chute 21, a shielding cover plate 3, a pushing device 4, a pushing plate 41, a compression spring 42, a pushing rod 43, a sliding block 44, a first electrode joint 5, a through hole 6, a feed-through filter 7, a second electrode joint 8, a limiting baffle 9 and a containing cavity 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example 1
The embodiment provides a contact-type feedthrough filter insertion loss test fixture, which comprises a shielding box body 2, electrode connectors are arranged on two sides of the shielding box body 2 in the length direction,
a pushing device 4 is arranged in the shielding box body 2 along the length direction, the pushing device 4 can move along the length direction of the shielding box body 2, an accommodating cavity 10 for placing the feedthrough filter 7 is formed between the front end of the pushing device 4 in the moving direction and the inner wall of the shielding box body 2,
one side of the shielding box body 2 close to the accommodating cavity 10 is provided with a first electrode joint 5, the pushing device 4 is provided with a second electrode joint 8, and two ends of the feedthrough filter 7 are respectively connected with the first electrode joint 5 and the second electrode joint 8.
The working principle is as follows: when the grounding shielding device is used, firstly, the pushing device 4 is stretched towards the outer side direction of the shielding box body 2 to leave enough placing space for the feedthrough filter 7, then the feedthrough filter 7 is placed in the containing cavity 10 formed between the front end of the pushing device 4 and the inner wall of the shielding box body 2, and then the pushing device 4 is pushed towards the feedthrough filter 7 to stably and fixedly clamp the feedthrough filter 7, so that for clamping the feedthrough filters 7 with different sizes, the distance between the pushing device 4 and the inner wall of the shielding box body 2 is only required to be adjusted to form the containing cavities 10 with different sizes, the stable clamping test requirements of the feedthrough filters 7 with different sizes can be met, the clamp is convenient to mount and dismount, and two sides of the shell of the feedthrough filter 7 are respectively contacted with the shielding box body 2 and the pushing device 4 to achieve the effect of grounding shielding; in addition, the lead wires at the two ends of the feedthrough filter 7 do not need to be welded, and the lead wires are directly inserted into the first electrode connectors 5 and the second electrode connectors 8 at the two sides, so that the direct insertion type installation of the connectors is adopted, and the installation efficiency and the operation convenience are greatly improved.
In this embodiment, the pushing device 4 includes a pushing plate 41, a pushing rod 43 and a compression spring 42, one end of the pushing rod 43 penetrates through the inner wall of the shielding box 2, and the other end is connected to the pushing plate 41; the compression spring 42 is arranged on the push rod 43, one end of the compression spring 42 is abutted against the push plate 41, and the other end is abutted against the inner wall of the shielding box body 2; the second electrode connector 8 is arranged on one side of the push plate 41 far away from the accommodating cavity 10; specifically, when the feedthrough filter 7 is fixed, the push rod 43 is stretched towards the outer side of the shielding box body 2, the compression spring 42 is in a compression state at the moment, and after the feedthrough filter 7 is placed, the push rod 43 is released, so that elastic compression joint is realized between the push plate 41 and the feedthrough filter 7 under the elastic action of the compression spring 42, the pressure is uniform, and the test consistency is good.
In this embodiment, the bottom wall of the shielding box 2 is provided with a sliding slot 21, the bottom of the push plate 41 is provided with a sliding block 44, and the sliding block 44 can slide along the sliding slot 21; when the push rod 43 pushes the push plate 41 to move, the slide block 44 slides in the slide groove 21, so that the movement is more stable and labor-saving.
In this embodiment, the bottom wall of the shielding box body 2 is further provided with a limiting baffle 9, and the limiting baffle 9 is arranged on one side of the shielding box body 2 far away from the accommodating cavity 10 and located outside the sliding groove 21; therefore, when the push plate 41 slides backwards, the limit baffle 9 can limit the push plate 41 to a certain extent, and when the accommodating cavity 10 is provided with a sufficient accommodating space, the elastic strain of the compression spring 42 is relieved, and the stability and the service life in the use process are improved.
In this embodiment, the side of the shielding box 2 where the first electrode contact 5 is disposed and the push plate 41 are both provided with through holes 6 through which the lead of the feedthrough filter 7 passes; therefore, when the lead wire of the feedthrough filter 7 is used for testing, the lead wire can be connected with the first electrode connector 5 and the second electrode connector 8 after extending into the through hole 6, and then the lead wire 1 is connected with a test instrument for testing.
In this embodiment, still be provided with on the shielding box body 2 and be used for sealing shielding cover plate 3 of shielding box body 2, shielding cover plate 3 can closely cooperate with shielding box body 2, has guaranteed test environment's closure, reaches good shielding effect, makes the measuring result more be close the effect when in actual use, guarantees the uniformity and the accuracy of test result.
In this embodiment, the shielding box 2 and the shielding cover 3 are made of insulating materials, and the electrode connector is an SMA connector.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A contact-type feed-through filter insertion loss test fixture comprises a shielding box body and is characterized in that,
a pushing device is arranged in the shielding box body along the length direction and can move along the length direction of the shielding box body, an accommodating cavity for placing the feedthrough filter is formed between the front end of the pushing device in the moving direction and the inner wall of the shielding box body,
one side of the shielding box body close to the containing cavity is provided with a first electrode joint, the pushing device is provided with a second electrode joint, and two ends of the feed-through filter are respectively connected with the first electrode joint and the second electrode joint.
2. The contact-type feedthrough filter insertion loss test fixture of claim 1, wherein the pushing device comprises a push plate, a push rod and a compression spring,
one end of the push rod penetrates through the inner wall of the shielding box body, and the other end of the push rod is connected with the push plate;
the compression spring is arranged on the push rod, one end of the compression spring is abutted against the push plate, and the other end of the compression spring is abutted against the inner wall of the shielding box body;
the second electrode joint is arranged on one side of the push plate, which is far away from the containing cavity.
3. The contact-type feedthrough filter insertion loss test fixture of claim 2, wherein the bottom wall of the shielding box body is provided with a sliding groove, and the bottom of the push plate is provided with a sliding block which can slide along the sliding groove.
4. The contact-type feedthrough filter insertion loss test fixture of claim 3, wherein the bottom wall of the shielding box body is further provided with a limit baffle, and the limit baffle is arranged on one side of the shielding box body away from the accommodating cavity and outside the sliding chute.
5. The contact-type feedthrough filter insertion loss test fixture of claim 2, wherein the shielding box body is provided with a through hole for a lead of the feedthrough filter to pass through, at one side of the first electrode connector and at the push plate.
6. The contact-type feedthrough filter insertion loss test fixture of claim 5, wherein the shielding box body is further provided with a shielding cover plate for closing the shielding box body.
7. The contact feedthrough filter insertion loss test fixture of claim 6, wherein the shield box and the shield cover are made of an insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121015324.4U CN215894673U (en) | 2021-05-12 | 2021-05-12 | Contact-type punching filter insertion loss test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121015324.4U CN215894673U (en) | 2021-05-12 | 2021-05-12 | Contact-type punching filter insertion loss test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215894673U true CN215894673U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121015324.4U Active CN215894673U (en) | 2021-05-12 | 2021-05-12 | Contact-type punching filter insertion loss test fixture |
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| CN (1) | CN215894673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114784479A (en) * | 2022-04-11 | 2022-07-22 | 成都宏明电子股份有限公司 | Manufacturing method of subminiature welding type filter |
-
2021
- 2021-05-12 CN CN202121015324.4U patent/CN215894673U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114784479A (en) * | 2022-04-11 | 2022-07-22 | 成都宏明电子股份有限公司 | Manufacturing method of subminiature welding type filter |
| CN114784479B (en) * | 2022-04-11 | 2023-07-14 | 成都宏明电子股份有限公司 | Manufacturing method of microminiature welding type filter |
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