CN107884105A - A kind of electrical cnnector with compensation mechanism keeps force checking device - Google Patents

Abstract

The invention discloses a device for detecting the holding force of an electrical connector with a compensation mechanism, which comprises a sensing unit, an installation ferrule, a force transmission unit and an adapter seat of a plug to be tested. The sensing unit, the mounting ferrule and the force transmission unit are connected by bolts. The force transmission unit includes the unit mounting seat, detection thimble, positioning nut, detection thimble sleeve, elastic element, force transmission thimble sleeve, force transmission thimble, and plug to be tested The adapter seat is installed on the front end of the unit mounting seat. The detection device can detect the unreliable pins of the electrical connector, and has a simple and compact structure. The detection thimble and force transmission thimble of the force transmission unit can be adjusted freely to compensate for the processing and assembly errors of the detection device and improve the detection accuracy; and the detection The device can realize the detection of male and female plug electrical connectors by separately replacing the plug adapter to be tested; the modularization of the detection device also facilitates the maintenance of various components.

Description

An electrical connector holding force detection device with a compensation mechanism

technical field

The patent of the present invention relates to the technical field of electrical detection, in particular to a device for detecting the holding force of an electrical connector with a compensation mechanism.

Background technique

In recent years, with the rapid development of science and technology, the complexity of the system is getting higher and higher, requiring the system to realize more and more functions, and more and more electrical connectors are used. As an excellent connection method, male and female plug electrical connectors are widely used in various fields. As a bridge for signal or energy transmission, electrical connectors can organically combine various components in the electrical system. It can work cooperatively and efficiently, but the reliability of its connection is affected by many factors, and the cause of its failure is mainly caused by the pin shrinkage phenomenon of the connector. The traditional detection of this phenomenon is mainly done manually, which not only consumes a lot of manpower and material resources, but also has low efficiency, which hinders the process of automatic operation. An electrical connector detection system based on machine vision can only detect a certain type of connector, and the image of the connection terminal must be collected during the detection, which cannot achieve real-time detection during work and faces the problems of electrical connectors during work. It is difficult to guarantee the accuracy of detection in complex environments. There is also a method for judging the reliability of an electrical connector based on the detection of the contact resistance of the connector. This detection method is relatively complicated and has low stability, and cannot realize the interchangeability of detection of male and female plug electrical connectors. CN105738661A "A An electrical connector detection device" is a pressure sensor-based electrical connector detection system, the processing error of the detection module cannot be compensated, and the detection accuracy is low.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a detection device for the holding force of the electrical connector with a compensation mechanism. Quick connection and separation and interchangeability during device detection, while having good reliability and stability.

In order to achieve the above purpose, the technical solution adopted by the present invention is: a device for detecting the holding force of an electrical connector with a compensation mechanism, including a sensing unit, a mounting ferrule, a force transmission unit and an adapter seat for a plug to be tested;

The sensing unit includes a pressure sensor, a unit bottom plate, a square guide block and a sensor adapter pad; the sensor adapter pad is installed in the middle adapter pad mounting hole of the square guide block, and the pressure sensor and the unit bottom plate are sequentially screwed Installed on the lower part of the square guide block;

The plug adapter to be tested is divided into a male plug adapter and a female plug adapter, the plug adapter to be tested matches the interface of the connector to be tested, and has an opening at a position corresponding to the pin of the connector to be tested. Detection thimble guide hole, with positioning buttons on both sides;

The force transmission unit includes a unit mounting seat, a force transmission thimble, a force transmission thimble sleeve, an elastic element, a detection thimble sleeve, a positioning nut, and a detection thimble; hole; the unit mounting seat has a component mounting hole corresponding to the through hole position of the plug adapter to be tested, and the hole is sequentially equipped with a force transmission thimble, a force transmission thimble sleeve, an elastic element, a detection Thimble sleeve, detection thimble, positioning nut;

The sensing unit is installed on the lower part of the installation ferrule through the unit bottom plate; the force transmission unit is installed on the upper part of the installation ferrule through bolts, and the force transmission thimble is pressed on the sensor adapter pad through the adapter pad mounting hole; The plug adapter seat is installed on the upper part of the unit mounting seat through the positioning button, and the protruding part of the detection thimble is placed in the detection thimble guide hole.

The component installation hole is a stepped hole structure, the bottom is a round hole with a diameter equal to the diameter of the force transmission thimble, the middle is a hexagonal hole with a size equal to the force transmission thimble sleeve, and the top is a thread with a diameter equal to the diameter of the circumscribed circle of the hexagon Holes; one end of the force transmission thimble and detection thimble is provided with a sinker groove, and the outer cylindrical surface near the other end is processed with external threads, and the diameters of the two are equal. The force transmission thimble sleeve and detection thimble sleeve are six The prismatic structure and the same size, and the lower part of the force transmission thimble sleeve is provided with an internal thread hole that matches the force transmission thimble, and the upper part of the detection thimble sleeve is provided with an internal thread hole that cooperates with the detection thimble; the positioning nut is a circular column structure , the outer cylindrical surface is processed with an external thread that matches the threaded hole on the top of the component mounting hole, the diameter of the inner circular hole is equal to the diameter of the detection thimble, and the top is provided with a cross sinking groove. The force transmission thimble is assembled with the force transmission thimble sleeve through threads and installed at the bottom of the component installation hole, the detection thimble is assembled with the detection thimble sleeve through threads and installed at the top of the component installation hole, and the elastic element is installed on the force transmission In the hexagonal hole between the thimble sleeve and the detection thimble sleeve. The sum of the length of the detection thimble sleeve, the length of the elastic element, and the length of the force transmission thimble sleeve is greater than the distance from the left end face of the hexagonal hole in the component mounting hole to the left end face of the positioning nut, so that the elastic element is in a compressed state in the assembled state. Adjust the compression of the elastic element by screwing in and out of the positioning nut to compensate for the dimensional error of the spring; when the force transmission thimble is fully screwed into the force transmission thimble sleeve, the length of the protruding component mounting hole is greater than the upper round hole of the adapter pad mounting hole The depth of the detection thimble is fully screwed into the detection thimble sleeve and the length of the extension component installation hole should make the elastic element have the maximum compression during detection. By adjusting the force transmission thimble and the depth of the detection thimble screwed into the sleeve, the free adjustment of the thimble and error compensation.

The square guide block is processed with an adapter pad installation hole corresponding to the pin position of the plug to be tested, and a unit assembly threaded hole is provided at the lower part of the square guide block; the adapter pad installation hole is a stepped hole, and the diameter of the lower round hole is It is equal to the diameter and depth of the sensor adapter pad and the height of the sensor adapter pad. The diameter of the upper round hole is smaller than the diameter of the lower round hole and equal to the diameter of the force transmission thimble. The position of the pressure sensor and the unit bottom plate corresponding to the unit assembly threaded hole are respectively provided with a sensor assembly hole and a bottom plate assembly hole, the diameters of the assembly through holes are equal and slightly larger than the unit assembly threaded hole, and unit fixing holes are provided at both ends of the unit bottom plate; The sensor adapter pad is a composite structure, one end close to the sensor is made of high-strength rubber material, and the other end is made of metal material.

The female plug adapter includes a main body of the plug adapter, a retaining spring of the positioning button, an elastic element and a positioning button. The main body of the plug adapter has a small hole at the position corresponding to the positioning button, and there is a boss at the bottom of the small hole to fix the elastic element. There is an annular groove on the wall of the small hole, and the locating button clip spring cooperates with the annular groove to assemble the locating button; the structure of the locating button at the tail of the adapter seat of the male plug is consistent with that of the locating button of the adapter seat of the female plug.

The sensor adapter pad, the adapter pad mounting hole, the detection force transmission component installation hole, the detection thimble guide hole, the force transmission thimble, the force transmission thimble sleeve, the elastic element, the detection thimble sleeve, the detection thimble, and the positioning nut are coaxial Set, and coaxial with the pins in the plug to be tested and one-to-one correspondence; the above-mentioned components are all in clearance fit size.

The beneficial effects of the present invention are: compared with the traditional electrical connector detection device, the detection device is simple in structure and easy to operate, and can be adjusted by adjusting the force-transmitting thimble, detecting the depth of the thimble into the thimble sleeve and the screw-in depth of the positioning nut. Adjust the length of the detection module, compensate for processing errors, and achieve high-precision detection; and the interchangeability of the detection of male and female plug electrical connectors can be achieved by replacing the plug adapter to be tested, without using two sets of equipment for separate detection; The device can separately disassemble and install the damaged sensors of each module during the detection process, which saves production costs and improves work efficiency.

Description of drawings

Figure 1 is a three-dimensional diagram of the assembly of the detection device;

Fig. 2 is a two-dimensional sectional view of the front view of the detection device;

Fig. 3 is a two-dimensional sectional view of the left view of the detection device;

Fig. 4 is a two-dimensional sectional view of the sensing unit of the detection device;

Fig. 5 is a three-dimensional view of the installation ferrule of the detection device;

Fig. 6 is a three-dimensional view of the force transmission unit of the detection device;

Fig. 7 is a three-dimensional view of the force transmission unit adjustment mechanism of the detection device;

Fig. 8 is a three-dimensional view of the female plug adapter seat of the detection device;

Fig. 9 is a three-dimensional view of the male plug adapter seat of the detection device;

Fig. 10 is a three-dimensional view of the square guide block of the detection device;

Figure 11 is a three-dimensional view of the unit mounting seat of the detection device

Fig. 12 is a two-dimensional view of the adjustment nut of the detection device.

In the figure: 1. Sensing unit; 11. Pressure sensor; 111. Sensor assembly hole; 12. Unit base plate; 121. Base plate assembly hole; 122. Unit fixing hole; 13. Square guide block; 131. Adapter pad mounting hole ; 132, threaded hole for unit assembly; 14, sensor adapter pad; 2, installation ferrule; 3, force transmission unit; 31, unit mounting seat; Force thimble; 33, power transmission thimble sleeve; 34, elastic element; 35, detection thimble sleeve; 36, positioning nut; 37, detection thimble; 4, plug adapter seat to be tested; 411, positioning button; 412, reset Spring; 413, button clip spring; 414, the main body of the female plug adapter seat; 415, the detection thimble guide hole; 421, the tail positioning button of the male plug adapter seat; 424, the main body of the male plug adapter seat.

Detailed ways

The present invention will be further described in detail below in conjunction with specific embodiments.

As shown in Figures 1 to 12, an electrical connector holding force detection device with a compensation mechanism includes a sensing unit 1, a mounting ferrule 2, a force transmission unit 3 and a plug adapter seat 4 to be tested; the sensing unit 1 includes a pressure sensor 11, a unit bottom plate 12, a square guide block 13 and a sensor adapter pad 14; the sensor adapter pad 14 is installed in the middle adapter pad mounting hole 131 of the square guide block 13, and the pressure sensor 11 and the unit bottom plate 12 are screwed Installed in the lower part of the square guide block in turn;

The plug adapter seat 4 to be tested is divided into a male plug adapter seat and a female plug adapter seat. Detect thimble guide hole 415, with positioning buttons 411 on both sides;

The force transmission unit 3 includes a unit mounting seat 31, a force transmission thimble 32, a force transmission thimble sleeve 33, an elastic element 34, a detection thimble sleeve 35, a positioning nut 36, and a detection thimble 37; There is an adapter seat mounting hole 311; the unit mounting seat 31 is provided with a component mounting hole 312 corresponding to the through hole position of the plug adapter seat 4 to be tested, and the force transmission thimble 32, the transmission Force thimble sleeve 33, elastic element 34, detection thimble sleeve 35, detection thimble 37, positioning nut 36;

The sensing unit 1 is installed on the lower part of the installation ferrule 2 through the unit bottom plate 12; the force transmission unit is installed on the upper part of the installation ferrule 2 through bolts, and the force transmission thimble 32 is pressed on the sensor adapter pad 14 through the adapter pad mounting hole 131 Above; the plug adapter seat 4 to be tested is installed on the upper part of the unit mounting seat 31 through the positioning button 411 , and the protruding part of the detection thimble 37 is placed in the detection thimble guide hole 415 .

The component mounting hole 312 is a stepped hole structure, the bottom is a circular hole with a diameter equal to the diameter of the force transmission thimble 32, the middle is a hexagonal hole with a size equal to the force transmission thimble sleeve 33, and the top is a hole with a diameter equal to the diameter of the circumscribed circle of the hexagon. Threaded holes; one end of the force transmission thimble 32 and detection thimble 34 is provided with a sinker groove, and the outer cylindrical surface near the other end is processed with external threads, and the diameters of the two are equal. The force transmission thimble sleeve 33 and the detection thimble sleeve 35 are The hexagonal prism structure has the same size, and the lower part of the force transmission thimble sleeve 33 is provided with an internally threaded hole that cooperates with the force transmission thimble 32, and the upper part of the detection thimble sleeve 35 is provided with an internal thread hole that cooperates with the detection thimble 34; the positioning nut 36 is Ring column structure, its outer cylindrical surface is processed with an external thread that matches the threaded hole at the top of the component mounting hole 312, the diameter of the inner circular hole is equal to the diameter of the detection thimble 37, and the top is provided with a cross sinking groove. The force transmission thimble 32 is assembled with the force transmission thimble sleeve 33 through threads and installed at the bottom of the component installation hole 312, the detection thimble 37 is assembled with the detection thimble sleeve 35 through threads and installed at the top of the component installation hole 312, and the elastic element 34 is installed in the hexagonal hole between force transmission thimble sleeve 33 and detection thimble sleeve 35. The sum of the length of the detection thimble sleeve 35, the length of the elastic element 34, and the length of the force transmission thimble sleeve 33 is greater than the distance from the left end surface of the inner hexagon hole of the component mounting hole 312 to the left end surface of the positioning nut 36, so that it is elastic in the assembled state The element 34 is in a compressed state, and the compression amount of the elastic element 34 is adjusted by screwing in and out of the positioning nut 36 to compensate for the dimensional error of the spring; when the force transmission thimble 32 is fully screwed into the force transmission thimble sleeve 33, it extends out of the component installation hole 312 The length is greater than the depth of the upper round hole of the adapter pad mounting hole 131. The detection thimble 37 is completely screwed into the detection thimble sleeve 35 and extends out of the component mounting hole 312. The length should make the elastic element have the maximum compression during detection. By adjusting the force transmission thimble 32. Detect the depth of the thimble 37 screwed into the sleeve to realize the free adjustment and error compensation of the thimble.

The square guide block 13 is processed with an adapter pad installation hole 131 corresponding to the pin position of the plug to be tested, and a unit assembly threaded hole 132 is provided at the bottom of the square guide block 13; the adapter pad installation hole 131 is a stepped hole, and its lower part is a round hole The diameter is equal to the diameter of the sensor adapter pad 14, and the depth is equal to the height of the sensor adapter pad 14. The diameter of the upper circular hole is smaller than the diameter of the lower circular hole and equal to the diameter of the force transmission thimble 32. Corresponding to the location of the unit assembly threaded hole 132 , the pressure sensor 11 is provided with a sensor assembly hole 111 , and the unit bottom plate 12 is provided with a bottom plate assembly hole 121 , which are equal in diameter and slightly larger than the unit assembly threaded hole 132 . Unit fixing holes 122 are provided at both ends of the unit bottom plate; the sensor adapter pad 14 is a composite structure, one end close to the sensor is made of high-strength rubber material, and the other end is made of metal material.

The female plug adapter includes a plug adapter main body 414, a positioning button spring 412, an elastic element 413 and a positioning button 414. The plug adapter main body 414 has a small hole at the position corresponding to the positioning button 411, and there is a boss at the bottom of the small hole The elastic element 413 is fixed, and the wall surface of the small hole is provided with an annular groove, and the positioning button circlip 412 cooperates with the annular groove to assemble the positioning button 411;

Sensor adapter pad 14, adapter pad installation hole 131, detection force transmission component installation hole 311, detection thimble guide hole 41, force transmission thimble 32, force transmission thimble sleeve 33, elastic element 34, detection thimble sleeve 35, detection The thimble 37 and the positioning nut 36 are coaxially arranged, and are coaxial with the pins in the plug to be tested and correspond one-to-one; the above-mentioned components all adopt clearance fit dimensions.

The working process of the detection device: first, screw the positioning nut through the square groove at the right end of the positioning nut to adjust the spring compression, and then adjust the length of the detection thimble and force transmission thimble to make the left and right ends of the detection unit flush. The inner thimble of the electrical connector of the male and female plug to be inspected pushes the detection thimble, the detection thimble and the detection thimble sleeve move down to compress the elastic element, and the pressure generated by the compression of the elastic element is opposed to the force transmission detection thimble sleeve and transmission at the bottom of the elastic element. The force thimble is transferred to the sensor adapter pad, and finally loaded on the pressure sensor located between the unit bottom plate and the sensor adapter pad, and the insertion displacement of the pin is completed-the mechanical force loaded by the elastic element-the conversion of the electrical signal of the pressure sensor.

The above are only specific application examples of the present invention, and do not constitute any limitation to the protection scope of the present invention. All technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims (5)

1. a kind of electrical cnnector with compensation mechanism keeps force checking device, its feature includes：Sensing unit（1）, installation Cutting ferrule（2）, power transmission unit（3）With plug adapted seat to be measured（4）；

The sensing unit（1）Including pressure sensor（11）, unit baseboard（12）, square guide pad（13）It is adapted to sensor Pad（14）；The sensor adapter pad（14）It is installed on square guide pad（13）Middle adapter pad mounting hole（131）It is interior, the pressure Force snesor（11）, unit baseboard（12）It is installed on square guide pad successively by screw（13）Bottom；

The plug adapted seat to be measured（4）It is divided into public plug adapted seat and female adapted seat, plug adapted seat to be measured（4）With treating Survey connector interface to match, and detection thimble pilot hole is being provided with connector pin correspondence position to be measured（415）, both sides are set There is navigation button（411）；

The power transmission unit（3）Including unit mounting seat（31）, power transmission thimble（32）, power transmission thimble sleeve（33）, flexible member （34）, detection thimble sleeve（35）, location nut（36）, detection thimble（37）；The unit mounting seat（31）In navigation button （411）Correspondence position is provided with adapted seat mounting hole（311）；The unit mounting seat（31）With plug adapted seat to be measured（4）'s Lead to the hole site is correspondingly provided with component mounting hole（312）, and it is equipped with power transmission thimble successively from bottom to top in hole（32）, power transmission top Needle sleeve（33）, flexible member（34）, detection thimble sleeve（35）, detection thimble（37）, location nut（36）；

The sensing unit（1）Pass through unit baseboard（12）It is installed on installation cutting ferrule（2）Bottom；Power transmission unit（3）Pass through spiral shell Bolt is installed on installation cutting ferrule（2）Top, and power transmission thimble（32）Pass through adapter pad mounting hole（131）It is pressed in sensor adapter pad （14）On；The plug adapted seat to be measured（4）Pass through navigation button（411）It is installed on unit mounting seat（31）Top, and detect top Pin（37）Extension is placed in detection thimble pilot hole（415）.

2. a kind of electrical cnnector with compensation mechanism keeps force checking device according to claim 1, it is characterised in that： The component mounting hole（312）For shoulder hole structure, bottom is that diameter is equal to power transmission thimble（32）The circular hole of diameter, middle part are chi It is very little to be equal to power transmission thimble sleeve（33）Hexagonal hole, top be the diameter screwed hole equal with hexagon circumscribed circle diameter；Institute State power transmission thimble（32）And detection thimble（34）One end is provided with a word deep gouge, is machined with outer spiral shell on the external cylindrical surface of the other end Line, and the two diameter is equal, the power transmission thimble sleeve（33）, detection thimble sleeve（35）For six prism structures and size one Cause, and power transmission thimble sleeve（33）Bottom is provided with and power transmission thimble（32）The internal thread hole of cooperation, detect thimble sleeve（35）On Portion is provided with detecting thimble（34）The internal thread hole of cooperation；The location nut（36）For annulus rod structure, its external cylindrical surface adds Work has and component mounting hole（312）The external screw thread that screw top hole coordinates, inner circular aperture diameter are equal to detection thimble（37）Diameter, Top is provided with cross deep gouge；The power transmission thimble（32）Pass through screw thread and power transmission thimble sleeve（33）It is assembled together and is loaded on group Part mounting hole（312）Bottom, detect thimble（37）Pass through screw thread and detection thimble sleeve（35）It is assembled together and is loaded on component Mounting hole（312）Top, flexible member（34）It is installed on power transmission thimble sleeve（33）With detection thimble sleeve（35）Between six sides In shape hole；

Detect thimble sleeve（35）Length, flexible member（34）Length, power transmission thimble sleeve（33）Length sum be more than Component mounting hole（312）Inner hexagonal hole left side is to location nut（36）Left side distance length, it is allowed to bullet in the assembled condition Property element（34）In compressive state, pass through location nut（36）Screw-in screw out adjustment flexible member（34）The size of decrement With the scale error of counterbalance spring；Power transmission thimble（32）All screw in power transmission thimble sleeve（33）When extension assembly mounting hole （312）Length be more than adapter pad mounting hole（131）The depth of top circular hole, detect thimble（37）All screw in detection tailstock barrel Cylinder（35）Extension assembly mounting hole（312）Length should make flexible member during detection that there is maximum compressibility, by adjusting power transmission Thimble（32）, detection thimble（37）Screw in sleeve depth realize thimble freely adjust and error compensation.

3. a kind of electrical cnnector with compensation mechanism keeps force checking device according to claim 1, it is characterised in that： The square guide pad（13）It is machined with the adapter pad mounting hole with the sub- position correspondence of connecting plug needle to be measured（131）, in square guiding Block（13）Bottom is provided with unit assembling screwed hole（132）；The adapter pad mounting hole（131）It is straight for shoulder hole, its underpart circular hole Footpath is equal to sensor adapter pad（14）Diameter, depth etc. and sensor adapter pad（14）Height, under top Circularhole diameter is less than Portion's Circularhole diameter and it is equal to power transmission thimble（32）Diameter；

Corresponding unit assembles screwed hole（132）Position, the pressure sensor（11）Provided with sensor assembly hole（111）, unit Bottom plate（12）Provided with bottom plate assembly hole（121）, the two diameter is equal and assembles screwed hole slightly larger than unit（132）；Unit baseboard Both ends are provided with unit fixing hole（122）；The sensor adapter pad（14）For composite construction, one end close to sensor is intensity Higher elastomeric material, the other end are metal material.

4. a kind of electrical cnnector with compensation mechanism keeps force checking device according to claim 1, it is characterised in that： The female adapted seat includes plug adapted seat main body（414）, navigation button jump ring（412）, flexible member（413）With navigation button （414）, plug adapted seat main body（414）In navigation button（411）Correspondence position is provided with aperture, and aperture bottom has boss to fix elasticity Element（413）, small wall surface of the hole is provided with annular groove, navigation button jump ring（412）Coordinate assembling navigation button with annular groove（411）；It is described Public plug adapted seat afterbody navigation button（421）Structure and female adapted seat navigation button（411）Unanimously.

5. a kind of electrical cnnector with compensation mechanism keeps force checking device according to claim 1, it is characterised in that： The sensor adapter pad（14）, adapter pad mounting hole（131）, detection power transmission component mounting hole（311）, detection thimble pilot hole （41）, power transmission thimble（32）, power transmission thimble sleeve（33）, flexible member（34）, detection thimble sleeve（35）, detection thimble （37）, location nut（36）It is coaxially disposed, and it is coaxial with pin in plug to be measured and correspond；Above-mentioned element uses Gap fit dimension.