WO2020143204A1

WO2020143204A1 - Calibration tooling, and device and method for measuring blind mating connector interfitting gap

Info

Publication number: WO2020143204A1
Application number: PCT/CN2019/096093
Authority: WO
Inventors: 何丽平; 周海
Original assignee: 烽火通信科技股份有限公司
Priority date: 2019-01-07
Filing date: 2019-07-16
Publication date: 2020-07-16
Also published as: CN109737911B; BR112021007703A2; CN109737911A

Abstract

A device and method for measuring a blind mating connector interfitting gap, comprising: calibration tooling (1) which is provided thereon with a groove (11), the depth S of the groove (11) being a partial pin length of a signal pin on a backplane connector for docking with a machine disk connector plus the thickness of the casing bottom of the backplane connector; and a simulation machine disk (2). The simulation machine disk (2) comprises: a disk body (21); a plurality of machine disk connectors which are each fixed on the disk body (21); at least one displacement sensor (22) which is fixed on the simulation machine disk (2) and arranged adjacent to one machine disk connector, the length of a part of the displacement sensor (22) that protrudes from the simulation machine disk (2) beyond the machine disk connector being slightly greater than the depth S; and a displacement tester (23) which is connected to the displacement sensor (22) and used for reading data of the displacement sensor (22). The device for measuring the blind mating connector interfitting gap may avoid the problem of poor measurement data consistency caused by multiple measurements and multiple calculations, and is not limited by the test conditions. The entire test tooling is simple and easy to operate, has high testing efficiency and high testing accuracy.

Description

Measuring device and method for calibrating tooling and blind mating connector inter-matching gap

Technical field

The invention relates to the field of measuring the interworking gap between the machine board and the backplane connector, in particular to a measuring device and method for the interworking gap of the blind plug connector.

Background technique

The interworking gap (Demated value) between the chassis connector and the sub-frame backplane connector directly affects the reliability of the product. Many signal failures are related to this value being too large. The Demated value is specifically shown in Figures 1 and 2. The factors that affect the Demated value include the machining and assembly errors of the machine board, the machining and assembly errors of the sub-frame, and the deformation of the machine board after insertion and removal of the backplane. All the influencing factors are normally distributed. How to accurately and efficiently measure the Demated value has become an urgent problem to be solved in the design and manufacture of high-end equipment.

Because the machine board and the backplane are in a mutually matched state, there is almost no enough test space to directly complete the test of the machine board and the backplane Demated value with the help of currently available equipment and tools.

At present, the Demated value mainly measures the distance from the machine panel to the backplane and the distance from the machine panel to the machine connector through a depth ruler, and calculates the interworking gap of the connector based on the thickness value of the backplane connector shell bottom.

As shown in Figure 3, the specific process of measuring the Demated value by the depth ruler is as follows:

(1) Measure the distance T1 between the machine panel and the connector of the machine;

(2) Measure the distance T2 between the machine panel and the backplane;

(3) Calculate T=T2-T1;

(4) Measure the thickness H of the bottom shell of the backplane connector;

(5) Calculate the Demated value: D=T-H.

It can be seen from the above process that using the depth ruler to measure the Demated value requires two measurements before calculation. It is not only limited by the test conditions, but also the consistency of the measurement data is too poor to meet the measurement accuracy requirements of the inter-gap of the connector.

Summary of the invention

In view of the defects in the prior art, the object of the present invention is to provide a measurement device for the gap of the blind mating connector, which can avoid the problem of poor measurement data consistency caused by multiple measurements and multiple calculations. It is not limited by the test conditions, the whole test tooling is simple and easy to operate, the test efficiency is high, and the test accuracy is high.

To achieve the above objectives, the technical solutions adopted by the present invention are:

A measuring device for inter-matching gap of blind plug connectors, including:

The calibration tooling is provided with a groove, and the depth S of the groove is the length of the part of the pin on the backplane connector for mating with the signal connector on the backplane connector plus the thickness of the bottom of the backplane connector shell; and

Analog machine disk, which includes,

-Plate body;

-Multiple machine disk connectors, all of which are fixed on the disk body;

-At least one displacement sensor, which is fixed on the disk body and is arranged adjacent to one of the machine disk connectors, and the portion of the displacement sensor extending from the disk body exceeds the length of the machine disk connector Slightly larger than the depth S;

-A displacement tester, which is connected to the displacement sensor and used to read the data of the displacement sensor.

On the basis of the above technical solution, when the calibration tool is attached to the simulated machine disk, the displacement sensor can be extended into the groove, and at least one machine board connector can be held against The step surface of the groove.

On the basis of the above technical solution, the displacement tester is also used to clear the data read when the calibration tool is attached to the simulated machine disk.

On the basis of the above technical solution, the simulated machine disk includes three displacement sensors.

On the basis of the above technical solution, the measuring device further includes an operating platform for receiving the simulated machine disk.

At the same time, another object of the present invention is to provide a calibration tooling, which can avoid the problem of poor measurement data consistency caused by multiple measurements and multiple calculations, and is not limited by the test conditions. The entire test tooling Simple and easy to operate, high test efficiency and high test accuracy.

A calibration tool is used to assist in measuring the interworking gap between the machine disk connector and the backplane connector. The calibration tool is provided with a groove, and the depth S of the groove is the signal pin on the backplane connector. The pin length of the connector of the machine board connector is connected to the thickness of the bottom of the backplane connector shell.

A method for measuring the inter-matching gap using the above measurement device, the method includes the following steps:

Fit the calibration tool and the simulation machine disk, and use the groove on the calibration tool and the simulation machine disk to read the pre-compression amount t1 of the displacement sensor at this time;

Insert the simulated machine disk into the sub-rack to be tested, and read the displacement value t2 of the displacement sensor;

The stroke T of the computer disk connector actually inserted into the backplane connector is t=t2-t1;

Calculate the interworking gap: Demated value = S-T.

On the basis of the above technical solution, the calibration tool is attached to the simulated machine disk so that the displacement sensor extends into the groove, and at least one machine disk connector is pressed against the step of the groove On the surface, the pre-compression amount t1 of the displacement sensor at this time is read by the displacement tester.

On the basis of the above technical solutions, a displacement tester is used to clear the pre-compression amount t1 of the displacement sensor.

Based on the above technical solution, the simulated machine disk includes three displacement sensors, and the three displacement sensors are used to respectively measure the corresponding pre-compression amount t1 and displacement value t2.

Compared with the prior art, the advantages of the present invention are:

(1) Compared with the measurement of the Demated value of the depth ruler in the prior art, the measurement device of the blind mating connector inter-matching gap of the present invention only requires fewer measurement calculations, and the consistency of the measurement data is better, because The S value is known in advance (the measurement is simple and convenient, and there is no limit to the test space). In actual measurement, only the displacement sensor and displacement tester are needed to measure t1 and t2. The entire test tooling is simple and easy to operate, and the test efficiency is high. During the measurement process, t1 is measured, which eliminates the nonlinear part of the front end of the displacement sensor, and adopts the measurement method of the combination of the displacement sensor and the displacement tester. Compared with the existing test method, it can only reach 0.1mm. The measurement method in the present invention can It reaches 0.01mm, which can meet the measurement accuracy requirements.

(2) The measuring device of the blind mating connector interworking gap of the present invention can flexibly select multiple test points by setting multiple displacement sensors to determine the position and trend of the worst DEMATED value, making the measurement results more reliable .

BRIEF DESCRIPTION

Figure 1 is a schematic plan view of the Demated value of the interworking gap;

Figure 2 is a perspective schematic view of the Demated value of the interworking gap;

Figure 3 is a schematic diagram of the relevant dimensions when measuring the Demated value with a depth ruler;

4 is a schematic structural diagram of a measurement device in an embodiment of the present invention;

5 is a schematic diagram of the S value in an embodiment of the present invention;

6 is a schematic structural diagram of a calibration tooling in an embodiment of the present invention;

7 is a schematic diagram of calibration tooling and simulated machine board testing in an embodiment of the present invention;

8 is a schematic diagram of t1 and t2 during the test process of the subrack to be tested in the embodiment of the present invention.

In the picture: 1-calibration tooling, 11-groove, 2-simulation machine disk, 21-disk body, 22-displacement sensor, 23-displacement tester, 3-operating table, 4-subrack to be tested.

detailed description

The present invention will be further described in detail below with reference to the drawings and embodiments.

Example 1:

As shown in FIGS. 4 to 8, an embodiment of the present invention provides a measurement device for a blind mating connector inter-matching gap, which includes a calibration tool 1 and an analog machine board 2.

Wherein, the calibration tool 1 is provided with a groove 11, and the depth S of the groove 11 is the length of the part of the pin used for butting the signal pin on the backplane connector and the chassis connector plus the thickness of the bottom of the backplane connector shell .

Analog machine board 2, which includes,

-Plate body 21;

-A plurality of machine disk connectors, all of which are fixed on the disk body 21;

-At least one displacement sensor 22, which is fixed on the disk body 21, and is arranged adjacent to one of the machine disk connectors, and the portion of the displacement sensor 22 that protrudes from the disk body 21 exceeds the machine disk The length of the connector is slightly larger than the depth S;

-A displacement tester 23, which is connected to the displacement sensor 22 and used to read the data of the displacement sensor 22.

Further, the measurement device in this embodiment further includes an operation platform 3, which is mainly used to provide a test platform, and is used to hold the simulation machine board 2 in actual use.

The principle of the measuring device in this embodiment is introduced below:

As shown in Figure 5, first define an S value. This S value refers to the length of the part of the pin on the backplane connector that is used for the docking of the signal pin and the chassis connector plus the thickness of the bottom of the backplane connector shell. The bottom of the connector shell is the boundary. The part of the pin length on the backplane connector that is used for the docking of the signal pin with the chassis connector refers to the part located on the left side of the bottom of the backplane connector shell. This S value can be measured in advance. After the S value is obtained, the calibration tool 1 can be made based on the S value, and the depth of the groove 11 of the calibration tool 1 is S.

Then, the calibration tool 1 and the simulation machine board 2 are docked, so that the displacement sensor 22 is located in the groove 11. The simulated machine board 2 refers to a machine board manufactured according to the structure size of the actual machine board, the model and the number of the machine board connectors, and can simulate the situation when the actual machine board is inserted. In this embodiment, the portion of the displacement sensor 22 that protrudes from the disk body 21 exceeds the length of the machine disk connector and is slightly larger than the depth S. The effect it has is that the displacement sensor 22 will be located in the groove 11 A little bit of pre-compression amount t1 is generated. This pre-compression amount t1 is mainly to eliminate the nonlinear part of the front end of the displacement sensor 22, and can be set reasonably according to the actual situation.

Then, insert the simulated chuck 2 into the sub-rack 4 to be measured to actually measure the value of the inter-matching gap. By reading the displacement value t2 of the displacement sensor 22, the actual insertion of the chuck connector can be obtained from t1 and t2. The backplane connector travel T=t2-t1. Thus, the value of Demated = S-T can be obtained.

In summary, compared with the measurement of the Demated value by the depth ruler in the prior art, this application only requires fewer measurement and calculation steps, and the consistency of the measurement data is better. Because the S value is known in advance, the measurement is simple and convenient, and there is no test Due to space constraints, only the displacement sensor 22 and displacement tester 23 are needed to measure t1 and t2 during actual measurement. The entire test tool is simple and easy to operate, and the test efficiency is high. Since t1 is measured during the measurement process, it eliminates displacement The nonlinear part of the front end of the sensor 22, and the measurement method using the combination of the displacement sensor 22 and the displacement tester 23 can only reach 0.1mm compared to the existing test method, and the measurement method in this embodiment can reach 0.01mm, which can satisfy the measurement Precision requirements.

Example 2:

Analog machine board 2, which includes,

-Plate body 21;

Further, when the calibration tool 1 is attached to the simulated machine board 2, the displacement sensor 22 can be extended into the groove 11 and at least one machine board connector can be held against The step surface of the groove 11 is described.

Preferably, the two machine disk connectors adjacent to the displacement sensor 22 bear against the stepped surface of the groove 11 so that the measurement will be more accurate.

Example 3:

Analog machine board 2, which includes,

-Plate body 21;

Further, the displacement tester 23 is also used to clear the data read when the calibration tool 1 and the simulation machine plate 2 are attached.

Clearing the data read here refers to clearing the pre-compression amount t1, because when measuring the stroke T of the disk connector actually inserted into the backplane connector, since T=t2-t1, the Clearing the pre-compression amount t1 can make T reading more convenient. In the case where the pre-compression amount t1 is cleared, the value of T can be directly obtained by reading the displacement value of the displacement sensor 22 (in this case, t2).

Example 4:

Among them, the calibration tooling 1 has

A groove 11, the depth S of the groove 11 is the length of a part of the pin used for butt connection between the signal pin on the backplane connector and the chassis connector plus the thickness of the bottom of the backplane connector shell.

Analog machine board 2, which includes,

-Plate body 21;

Further, the simulation machine board 2 includes three displacement sensors 22.

By setting three displacement sensors 22, multiple test points can be flexibly selected to determine the position and trend of the worst DEMATED value, making the measurement results more reliable.

Example 5:

As shown in FIG. 5, an embodiment of the present invention provides a calibration tool 1 for assisting in measuring the interworking gap between a machine disk connector and a backplane connector. The calibration tool 1 is provided with a groove 11. The depth S of the groove 11 is the length of the part of the pin on the backplane connector used for butt connection between the signal pin and the chassis connector plus the thickness of the bottom of the backplane connector shell.

Example 6:

An embodiment of the present invention provides a method for measuring an interworking gap using the measurement device in Embodiment 1, the method includes the following steps:

Fit the calibration tool 1 to the simulation machine plate 2 and use the groove 11 on the calibration tool 1 and the simulation machine plate 2 to read the pre-compression amount t1 of the displacement sensor 22 at this time;

Insert the simulated machine disk 2 into the sub-rack 4 to be tested, and read the displacement value t2 of the displacement sensor 22;

Calculate the interworking gap: Demated value = S-T.

Example 7:

Calculate the interworking gap: Demated value = S-T.

Further, the calibration tool 1 is attached to the simulated machine board 2 so that the displacement sensor 22 extends into the groove 11 while at least one machine board connector is held against the step of the groove 11 The displacement tester 23 reads the pre-compression amount t1 of the displacement sensor 22 at this time. Preferably, the two machine disk connectors adjacent to the displacement sensor 22 bear against the stepped surface of the groove 11 so that the measurement will be more accurate.

Further, the displacement tester 23 is used to clear the pre-compression amount t1 of the displacement sensor 22.

Example 8:

Calculate the interworking gap: Demated value = S-T.

Further, the simulated machine disk 2 includes three displacement sensors 22, and the three displacement sensors 22 are used to respectively measure the corresponding pre-compression amount t1 and displacement value t2.

The present invention is not limited to the above-mentioned embodiments. For those of ordinary skill in the art, without departing from the principles of the present invention, several improvements and retouches can be made. These improvements and retouches are also regarded as the protection of the present invention Within range. The contents that are not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

A measuring device for inter-matching gap of blind plug connectors, which is characterized by comprising:

The calibration tooling (1) is provided with a groove (11), and the depth S of the groove (11) is the length of the part of the pin on the backplane connector used for butt connection between the signal pin and the chassis connector plus the backplane The thickness of the connector shell bottom; and

Analog machine disk (2), which includes,

-Plate body (21);

-A plurality of machine disk connectors, all of which are fixed on the disk body (21);

-At least one displacement sensor (22), which is fixed on the disk body (21) and is adjacent to one of the machine disk connectors, and the displacement sensor (22) extends out of the disk body (21) ) Part exceeds the length of the machine disk connector is slightly greater than the depth S;

-A displacement tester (23), which is connected to the displacement sensor (22) and used to read data of the displacement sensor (22).
The measuring device according to claim 1, characterized in that when the calibration tool (1) is attached to the simulated machine plate (2), the displacement sensor (22) can be extended into the groove (11), and at least one of the machine plate connectors is pressed against the stepped surface of the groove (11).
The measuring device according to claim 2, characterized in that the displacement tester (23) is also used to clear the data read when the calibration tool (1) and the simulation machine disk (2) are attached .
The measuring device according to claim 2, characterized in that the analog machine plate (2) includes three displacement sensors (22).
The measuring device according to claim 1, characterized in that the measuring device further comprises an operating table (3) for receiving the simulated machine board (2).
A calibration tool (1) is used to assist in measuring the interworking gap between the machine disk connector and the backplane connector, and is characterized in that: the calibration tool (1) is provided with a groove (11), the recess The depth S of the slot (11) is the length of the part of the pin on the backplane connector used to mate with the connector of the machine board plus the thickness of the bottom of the backplane connector shell.
A method for measuring an interworking gap by using the measuring device according to claim 1, wherein the method includes the following steps:

Lay the calibration tool (1) and the simulation machine disk (2), use the groove (11) on the calibration tool (1) and the simulation machine board (2) to read the pre-compression of the displacement sensor (22) at this time Quantity t1;

Insert the simulated machine disk (2) into the sub-rack (4) to be tested, and read the displacement value t2 of the displacement sensor (22);

The stroke T of the computer disk connector actually inserted into the backplane connector is t=t2-t1;

Calculate the interworking gap: Demated value = S-T.
The method according to claim 7, characterized in that the calibration tool (1) and the simulation machine plate (2) are stuck together, so that the displacement sensor (22) extends into the groove (11), and at the same time At least one of the machine disk connectors bears against the stepped surface of the groove (11), and the pre-compression amount t1 of the displacement sensor (22) at this time is read by the displacement tester (23).
The method according to claim 8, characterized in that the pre-compression amount t1 of the displacement sensor (22) is cleared by a displacement tester (23).
The method according to claim 7, characterized in that the simulated machine disk (2) includes three displacement sensors (22), and the corresponding pre-compression amount t1 and displacement are respectively measured by the three displacement sensors (22) Value t2.