CN218974413U

CN218974413U - Test fixture for microstrip ring isolator

Info

Publication number: CN218974413U
Application number: CN202223064919.6U
Authority: CN
Inventors: 帅红春; 刘兴平; 游媛媛
Original assignee: CHENGDU HONGKE MICROWAVE COMMUNICATION CO LTD
Current assignee: CHENGDU HONGKE MICROWAVE COMMUNICATION CO LTD
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-05-05
Anticipated expiration: 2032-11-18

Abstract

The utility model relates to a test fixture for a microstrip ring isolator, which comprises a base, a vertical frame, a driving device, a pressure head and a test seat, wherein the vertical frame is vertically connected with the base, the driving device is arranged on the vertical frame, the output end of the driving device is detachably connected with the pressure head, the pressure head is driven to move up and down, the test seat is arranged on the base and is positioned under the pressure head, a substrate groove is arranged in the middle of the test seat, a plurality of elastic pieces are arranged at the edges of the substrate groove, a plurality of connectors are arranged on the peripheral wall of the test seat, the elastic pieces are electrically connected with the connectors, and the pressure head is movably abutted with the elastic pieces. Utilize the pressure head to act on the shell fragment for the shell fragment pushes down and awaits measuring isolator port contact, can guarantee the reliability of isolator port connection, and the device on the isolator is not damaged simultaneously, and need not to directly act on the isolator surface with test probe, solves the problem that the bonding pad size is too little on the isolator, is difficult to align.

Description

Test fixture for microstrip ring isolator

Technical Field

The utility model relates to the technical field of test fixtures, in particular to a test fixture for a microstrip ring isolator.

Background

The test fixture is very important equipment in an electronic device production processing plant, is generally arranged at the tail end of a production link, and can improve the accuracy of the test and the shipment quality only by meeting the specified requirements when testing microwave devices and the like. With the trend of miniaturization of contemporary microwave devices, testing of devices is becoming one of the problems to be solved. The input/output port of the existing microstrip isolator is arranged on the surface of a device, the size of a bonding pad is small, alignment is difficult, and the problem of testing precision is difficult to solve. In addition, when the probe is used for the down-press test, the probe is easily contacted with components around the bonding pad when the probe is misplaced, so that the components are damaged, and the defects need to be improved.

Disclosure of Invention

Based on the above, it is necessary to provide a test jig for a microstrip ring isolator.

The utility model provides a microstrip is test fixture for isolator, includes the base, the grudging post, drive arrangement, pressure head and test seat, the grudging post is connected with the base is perpendicular, drive arrangement installs on the grudging post, and drive arrangement's output can dismantle with the pressure head and be connected, drive pressure head displacement from top to bottom, the test seat is installed on the base to be located under the pressure head, the test seat middle part is provided with the base plate groove, base plate groove limit department is provided with a plurality of shell fragments, install a plurality of connectors on the test seat week wall, the shell fragment is connected with the connector electricity, pressure head and shell fragment activity butt.

Preferably, the elastic sheet is electrically connected with the connector through a microstrip line.

Preferably, a notch is arranged on the peripheral wall of the test seat, and the notch is communicated with the substrate groove.

Preferably, the lower part of the pressure head is hollowed, and the edge part is provided with convex teeth corresponding to the elastic sheet.

Preferably, the driving device comprises a switching block, a crank, a handle, a sliding rail, a sliding block and a rotating block, wherein one end of the switching block is connected with the top of the vertical frame, the other end of the switching block is hinged with the upper end of the crank through the rotating block, the lower end of the crank is connected with the sliding block, the handle is inserted on the rotating block, the sliding rail is vertically arranged on the vertical frame, the side part of the sliding block is movably connected with the sliding rail, and the pressure head is detachably connected with the lower end of the sliding block.

Preferably, a ball grip is arranged at one end of the handle away from the rotating block.

The utility model has the advantages that: utilize the pressure head to act on the shell fragment for the shell fragment pushes down and awaits measuring isolator port contact, can guarantee the reliability of isolator port connection, and the device on the isolator is not damaged simultaneously, and need not to directly act on the isolator surface with test probe, solves the problem that the bonding pad size is too little on the isolator, is difficult to align.

Drawings

FIG. 1 is a schematic perspective view of a test fixture for a microstrip ring isolator according to one embodiment;

fig. 2 is an explosion schematic diagram of a test fixture for a microstrip ring isolator.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "fixed" or "disposed" on 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 are used herein for illustrative purposes only and are not meant to be the only embodiment.

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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-2, a test fixture for a microstrip circuit isolator comprises a base 1, a vertical frame 2, a driving device 3, a pressure head 4 and a test seat 5, wherein the vertical frame 2 is vertically connected with the base 1, the driving device 3 is arranged on the vertical frame 2, the output end of the driving device 3 is detachably connected with the pressure head 4, the pressure head 4 is driven to move up and down, the test seat 5 is arranged on the base 1 and is positioned under the pressure head 4, a substrate groove 51 is arranged in the middle of the test seat 5, a plurality of elastic pieces 52 are arranged at the edges of the substrate groove 51, a plurality of connectors 53 are arranged on the peripheral wall of the test seat 5, the elastic pieces 52 are electrically connected with the connectors 53, and the pressure head 4 is movably abutted with the elastic pieces 52. Specifically, during the use, operating personnel place the isolator that awaits measuring in base plate groove 51 department, and a plurality of shell fragments 52 and the port one-to-one of isolator drive pressure head 4 through drive arrangement 3 pushes down, and drive arrangement 3 can be manual drive arrangement or automatic drive arrangement, like connecting rod structure, lead screw structure or electric putter etc. as long as can drive pressure head 4 up-and-down displacement can. Further, when the pressure head 4 is pressed down, the spring plate 52 is arranged at the edge of the substrate groove 51, the positions of the spring plate 52 are in one-to-one correspondence with the ports of the isolator to be tested, accurate alignment is achieved, a certain height difference exists between the surfaces of the spring plate 52 and the ports of the isolator placed in the substrate groove 51, and after the spring plate 52 is pressed, the spring plate 52 is bent downwards to be tightly attached to the ports of the isolator. It can be known that the elastic sheet 52 is a metal elastic sheet, and is connected to the testing system through the connector 53 around the testing seat 5 for testing. The method can avoid the original probe from directly acting on the isolator to be tested, prevent the probe from damaging devices on the surface of the isolator, and solve the problems of too small bonding pad on the isolator, difficult alignment of the test probe and larger error of test precision.

As shown in fig. 1-2, the spring plate 52 is electrically connected with the connector 53 through the microstrip line 521, no wiring harness is required, and the integration is better, so that the wiring harness is avoided.

As shown in fig. 1-2, the peripheral wall of the test seat 5 is provided with a notch 54, the notch 54 is communicated with the substrate groove 51, so that an operator can push the isolator to be tested into the substrate groove 51 through the notch 54 conveniently, and the isolator is more convenient to take.

As shown in fig. 1-2, the lower part of the pressure head 4 is hollow, and the edge part corresponding to the spring plate 52 is provided with a convex tooth 41. Specifically, the hollow part of the press head 4 can avoid the device on the isolator to be tested, and the convex teeth 41 act on the elastic sheet 52, so that the elastic sheet 52 is in butt joint with the port of the isolator, and the contact is good.

As shown in fig. 1-2, the driving device 3 comprises a switching block 31, a crank 32, a handle 33, a sliding rail 34, a sliding block 35 and a rotating block 36, wherein one end of the switching block 31 is connected with the top of the stand 2, the other end of the switching block is hinged with the upper end of the crank 32 through the rotating block 36, the lower end of the crank 32 is connected with the sliding block 35, the handle 33 is inserted on the rotating block 36, the sliding rail 34 is vertically arranged on the stand 2, the side part of the sliding block 35 is movably connected with the sliding rail 34, and the pressure head 4 is detachably connected with the lower end of the sliding block 35. Specifically, the operator manually turns over the handle 33 to drive the sliding block 35 to press down along the sliding rail 34, so that the convex tooth 41 at the lower end of the pressure head 4 acts on the elastic sheet 52, the elastic sheet 52 is pressed against the port of the isolator to be tested, and after the test is completed, the operator drives the pressure head 4 to move upwards and reset through the handle 33, so that the test flow is completed.

As shown in fig. 1-2, a ball handle 331 is disposed at an end of the handle 33 away from the rotating block 36, and an operator holds the ball handle 331 with better hand feeling.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A test fixture for a microstrip ring isolator is characterized in that: including the base, the grudging post, drive arrangement, pressure head and test seat, the grudging post is connected with the base is perpendicular, drive arrangement installs on the grudging post, and drive arrangement's output can be dismantled with the pressure head and be connected, drive pressure head displacement from top to bottom, the test seat is installed on the base to be located the pressure head under, the test seat middle part is provided with the base plate groove, base plate groove limit department is provided with a plurality of shell fragments, install a plurality of connectors on the test seat week wall, the shell fragment is connected with the connector electricity, pressure head and shell fragment activity butt.

2. The test fixture for a microstrip ring isolator as claimed in claim 1, wherein: the elastic sheet is electrically connected with the connector through the microstrip line.

3. The test fixture for a microstrip ring isolator as claimed in claim 1, wherein: and a notch is arranged on the peripheral wall of the test seat and is communicated with the substrate groove.

4. The test fixture for a microstrip ring isolator as claimed in claim 1, wherein: the lower part of the pressure head is hollowed out, and the edge part is provided with convex teeth corresponding to the elastic sheet.

5. The test fixture for a microstrip ring isolator as claimed in claim 4, wherein: the driving device comprises a switching block, a crank, a handle, a sliding rail, a sliding block and a rotating block, wherein one end of the switching block is connected with the top of the vertical frame, the other end of the switching block is hinged with the upper end of the crank through the rotating block, the lower end of the crank is connected with the sliding block, the handle is inserted on the rotating block, the sliding rail is vertically arranged on the vertical frame, the side part of the sliding block is movably connected with the sliding rail, and the pressing head is detachably connected with the lower end of the sliding block.

6. The test fixture for a microstrip ring isolator as claimed in claim 5, wherein: one end of the handle, which is far away from the rotating block, is provided with a ball handle.