A separation performance test device for separating and falling off electrical connectors

Abstract

The invention relates to the field of separation performance testing, and discloses a separation performance testing device for a separation-and-fall-off electrical connector, comprising a pulling mechanism and a pulling rope connecting a plug and the pulling mechanism; the pulling mechanism comprises a fixing frame, a gear is rotatably installed on the inner side of the fixing frame, a rack is installed below the gear, one end of the pulling rope is connected to the rack, and the other end passes through the rear end of the fixing frame and is wound upward to the top surface of the fixing frame to be connected to the plug; a driving component for driving the gear to rotate is also arranged on the outer side of the fixing frame, and the output end of the driving component is connected to the gear through a clutch; the gear and the driving component are connected by the clutch, so that the power of the driving component can be output to the gear when it reaches the target value, so as to drive the pulling rope to pull the plug through the rack to complete the test, thereby avoiding the situation where the plug and the socket are separated when the speed of the pulling rope does not meet the standard, and the structural layout of the pulling mechanism occupies less space than the prior art.

Description

Technical Field

[0001] The invention relates to the field of separation performance testing, and in particular to a separation performance testing device for a separation-and-fall-off electrical connector. Background Art

[0002] In modern electronic technology and electrical systems, electrical connectors play a vital connecting role; and for some special application scenarios, such as aerospace, military equipment and other fields, the performance of separation and detachment electrical connectors is directly related to the reliability and safety of the entire system. It is a specially designed electrical connector that has the characteristics of being able to automatically or manually separate and detach under specific conditions.

[0003] With the continuous advancement of science and technology and the increasing complexity of application requirements, the separation performance requirements for separation and detachment electrical connectors are becoming higher and higher; in order to ensure that these connectors can accurately and reliably complete the separation action under specific conditions, separation performance testing devices came into being.

[0004] However, the existing separation performance testing device still has the following shortcomings:

[0005] (1) Single axial force measurement is used, lacking multi-angle force application testing;

[0006] (2) When the rope is accelerated to 4 m / s, a larger space is required;

[0007] (3) The test items are single and lack comprehensive testing functions;

[0008] (4) The test product is single;

[0009] (5) Lack of video recording function of the separation process;

[0010] (6) Single-point testing: the software lacks comprehensive data collection and analysis functions;

[0011] (7) The operation is complicated and requires a certain level of proficiency from the user. Summary of the invention

[0012] The purpose of the present invention is to overcome the shortcomings in the prior art and provide a separation performance testing device for a detachable and detachable electrical connector, in which a plug and a socket are respectively fixed by corresponding clamps, and a pulling mechanism drives a pull rope to pull the plug so that the plug clamp is separated relative to the socket clamp to ensure that the plug and the socket are separated; wherein, when the output speed of the driving component reaches a specified value, the clutch is used to transmit the torque to the gear, and the gear drives the rack to move to drive the pull rope to pull the plug to achieve separation; this structure can ensure that the pulling speed output by the pulling mechanism instantly reaches the target value, avoiding the situation where the plug and the socket are separated when the speed is not up to standard.

[0013] In order to achieve the above object, the technical solution adopted by the present invention is:

[0014] A device for testing the separation performance of a detachable electrical connector, comprising a socket fixture, a plug fixture, a pulling mechanism and a pulling rope connecting the plug and the pulling mechanism, wherein the pulling mechanism drives the pulling rope to pull the plug so that the plug fixture can be separated from the socket fixture; an angle adjustment mechanism for adjusting the direction of the pulling rope is provided at the front end of the pulling mechanism, and a loading mechanism for applying a load pulling force to the plug is also provided between the pulling mechanism and the plug fixture; the pulling mechanism comprises a fixed frame, a gear is rotatably installed on the inner side of the fixed frame, a rack meshing with the gear is slidably installed below the gear, one end of the pulling rope is connected to the rack, and the other end passes through the rear end of the fixed frame and goes around upward to the top of the top surface of the fixed frame, passes through the angle adjustment mechanism and is connected to the plug; a driving component for driving the gear to rotate is also provided on the outer side of the fixed frame, and the output end of the driving component is connected to the gear through a clutch.

[0015] Optionally, a buffer is installed at the front end of the fixed frame, and an impact plate capable of contacting the buffer is installed at the end of the rack opposite to the pull rope; a second telescopic component is provided on one side of the rack, and a pullback baffle is connected to the output end of the second telescopic component, and one end of the pullback baffle extends between the buffer and the impact plate.

[0016] Optionally, the angle adjustment mechanism includes a lifting component and a rotating component capable of driving the lifting component to rotate around the X-axis, and the rotating component is installed on the top of the fixed frame; the lifting component includes a mounting plate connected to the output end of the rotating component, and a guide component capable of lifting and lowering is provided on one side of the mounting plate, and one end of the pull rope passes through the rotating component, the mounting plate and the guide component in sequence and is connected to the plug.

[0017] Optionally, the guide assembly includes a first support block and a second support block arranged opposite to each other, between which two pulley bodies arranged along the longitudinal direction are rotatably installed, and the pull rope passes between the two pulley bodies; an adjusting screw rod parallel to the Z axis is rotatably installed on one side of the mounting plate, a screw rod nut is screwed on the adjusting screw rod, and the first support block is fixedly installed on the screw rod nut, and the second support block is slidably installed on the mounting plate.

[0018] Optionally, the rotating assembly includes a base fixedly mounted on the top of the fixed frame, a rotating shaft is rotatably mounted on the base, a through hole for the pull rope to pass through is opened at the center position of the rotating shaft, one end of the rotating shaft is connected to the mounting plate, and a worm gear is mounted on the other end, and a worm screw meshing with the worm gear is rotatably mounted above the worm gear.

[0019] Optionally, the socket clamp includes a frame located on one side of the fixed frame, one side of the frame is slidably connected with two first clamping blocks that can open and close relatively along the Y-axis direction and are used to clamp the socket, and one side of the first clamping block is provided with a pressure block that can move along the X-axis direction and abut against the back of the socket; the plug clamp includes a movable plate, one side of the movable plate is slidably connected with a second clamping block that can open and close relatively along the Y-axis direction and is used to clamp the plug; the movable plate is connected to the frame by a support rod parallel to the X-axis direction, and the movable plate is slidably sleeved on the support rod.

[0020] Optionally, a guide rod is provided above the support rod and is slidably inserted into the movable plate, one end of the guide rod is fixedly connected to the frame, and the other end is fixedly installed with an axis end baffle, and a spring is also provided between the axis end baffle and the movable plate; a stopping mechanism for fixing the movable plate is provided below the support rod; the stopping mechanism includes a telescopic component installed on one side of the frame, a support is fixedly installed on the top of the telescopic component, a stopping buckle is rotatably installed on the support, and when the output end of the telescopic component drives one end of the stopping buckle to move upward, the other end of the stopping buckle can abut against the movable plate.

[0021] Optionally, the loading mechanism includes a base plate, a loading pulley assembly and a loading rope, wherein two longitudinal plates are arranged opposite to each other on the base plate, a loading screw rod parallel to the X-axis direction is rotatably installed between the two longitudinal plates, and a center connecting plate is screwed on the loading screw rod; the base plate is arranged between the plug clamp and the fixed frame, the loading pulley assembly is arranged on one side of the base plate, and one end of the loading rope is connected to the center connecting plate through a first force sensor, and the other end passes through the loading pulley assembly and is connected to the plug upward.

[0022] Optionally, a second force sensor is provided on the pull rope, and a bracket for supporting the second force sensor is slidably mounted on the top of the fixing frame.

[0023] Optionally, cameras are arranged above the socket fixture and the plug fixture, and a position adjustment mechanism for adjusting the position of the camera is also arranged on the socket fixture.

[0024] Beneficial Effects

[0025] (1) The tension mechanism in the present invention connects the gear and the drive assembly through a clutch, which can ensure that the power of the drive assembly is output to the gear when it reaches the target value, so as to drive the pull rope through the rack to pull the plug to complete the test, thereby avoiding the situation where the plug and the socket are separated when the pull rope speed does not meet the standard. In addition, the structural layout of the tension mechanism occupies less space than the prior art, the angle adjustment mechanism can adjust the direction of the pull rope to meet the tension test at multiple angles, and the loading mechanism can simulate the stress conditions in actual use to ensure that the test data is more convincing.

[0026] (2) With respect to the above-mentioned angle adjustment mechanism, its lifting assembly can drive the guide assembly to lift, and the rotating assembly can drive the lifting assembly to rotate. The two can cooperate with each other to drive the pull rope to be at different angles relative to the plug through the movement of the guide assembly, so as to meet the requirements of multi-angle tension testing.

[0027] (3) The socket fixture and the plug fixture of the present invention respectively use the first clamping block and the second clamping block to clamp the socket and the plug, which can meet the testing of products of different specifications and greatly improve the application range of the device.

[0028] (4) The camera in the present invention can record the state of the plug and the socket when they are separated during the test, so that the relationship between the speed, displacement and time during the separation can be obtained through analysis of their trajectories later. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 2 is a schematic diagram of the structure of a separation performance test device for a separation-and-detachment electrical connector according to an embodiment of the present invention;

[0030] Figure 2 It is a schematic diagram of the main structure of a separation performance test device for a separation and fall-off electrical connector according to an embodiment of the present invention;

[0031] Figure 3 is a structural schematic diagram of a tension mechanism in an embodiment of the present invention;

[0032] Figure 4 is a structural schematic diagram of an angle adjustment mechanism in an embodiment of the present invention;

[0033] Figure 5 is a schematic structural diagram of a loading mechanism in an embodiment of the present invention;

[0034] Figure 6 is a schematic structural diagram of a socket fixture and a plug fixture in an embodiment of the present invention;

[0035] Figure 7 is a schematic diagram of the isometric structure of a socket fixture and a plug fixture in an embodiment of the present invention;

[0036] Figure 8is a schematic structural diagram of a plug fixture in an embodiment of the present invention;

[0037] Fig. 9 is a structural schematic diagram of the assembly of the second fixing plate and the socket fixture in an embodiment of the present invention;

[0038] Fig.10 yes Figure 2 A local enlarged schematic diagram of the middle A;

[0039] Among them, 1, socket fixture; 101, rack; 102, first clamping block; 103, pressing block; 104, first fixing plate; 105, first telescopic assembly; 106, first clamping plate; 107, second fixing plate;

[0040] 2. Plug fixture; 21. Moving plate; 22. Second clamping block; 23. Support rod; 24. Support plate; 25. Guide rod; 26. Shaft end baffle; 27. Second clamping plate;

[0041] 3. Tension mechanism; 30. Fixed frame; 301. Buffer; 31. Gear; 32. Rack; 33. Driving assembly; 34. Clutch; 35. Impact plate; 36. Second telescopic assembly; 37. Pullback baffle; 38. First pulley assembly; 39. Second pulley assembly;

[0042] 4. Pull rope;

[0043] 5. Loading mechanism; 51. Bottom plate; 52. Longitudinal plate; 53. Loading screw rod; 54. Guide rod; 55. Middle connecting plate; 56. First force sensor; 57. Loading pulley assembly; 58. Loading rope;

[0044] 6. Rotating assembly; 61. Base; 62. Rotating shaft; 63. Worm gear; 64. Worm; 65. Limit block; 66. Stop block;

[0045] 7. Lifting assembly; 71. Mounting plate; 72. Adjusting screw; 73. Screw nut; 74. First support block; 75. Second support block; 76. Pulley body; 77. Third pulley assembly;

[0046] 8. Stop mechanism; 81. Telescopic component; 82. Support; 83. Stop buckle;

[0047] 9. Camera; 91. Support rod; 92. Sliding block; 93. Sliding rod; 94. First connecting plate; 95. Second connecting plate; 96. Sliding groove; 97. Mounting seat;

[0048] 10. Power supply; 11. Second force sensor; 12. Bracket. DETAILED DESCRIPTION

[0049] The present invention will now be further described in detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0050] Embodiment 1

[0051] like Figure 1-Figure 2 As shown, a separation performance test device for a detachable electrical connector comprises a socket fixture 1, a plug fixture 2, a tension mechanism 3, a pull rope 4, a loading mechanism 5 and an angle adjustment mechanism; the socket fixture 1 and the plug fixture 2 are respectively used to clamp and fix the socket and the plug, the socket and the plug can be plugged in and separated from each other, and the socket fixture 1 and the plug fixture 2 can also be brought close to or separated as the socket and the plug are opened and closed; the loading mechanism 5 is arranged between the plug fixture 2 and the tension mechanism 3 and is used to apply a load on the plug to simulate the actual use of the electrical connector; the angle adjustment mechanism is arranged at the front end of the tension mechanism 3, the two ends of the pull rope 4 are respectively connected to the output end of the plug and the tension mechanism 3, under the drive of the tension mechanism 3, the pull rope 4 can pull the plug to separate it from the socket, and drive the plug fixture 2 to separate relative to the socket fixture 1, and the angle adjustment mechanism can adjust the angle of the pull rope 4 relative to the plug to meet the multi-angle tension test of the device.

[0052] like Figure 1-Figure 2 , Figure 6-Figure 9 As shown, the socket fixture 1 includes a frame 101, and two first clamping blocks 102 that can be relatively opened and closed along the Y-axis direction and are used to clamp the socket are slidably connected to one side of the frame 101. A pressing block 103 that can move along the X-axis direction and abut against the back of the socket is provided on one side of the first clamping block 102. The side of the socket can be embedded in the groove provided on the first clamping block 102. After the two first clamping blocks 102 are relatively close to clamp the socket, one end of the pressing block 103 is abutted against the back of the socket to firmly fix it.

[0053] The first clamping block 102 is fixedly mounted on the first clamping plate 106, and the first clamping plate 106 is slidably connected to the frame 101 through a linear slide rail. A replaceable pad is provided in the middle part of the first clamping plate 106 as a support for the product. The function of the replaceable pad is to adjust the height of the product to achieve the centering effect.

[0054] A first fixing plate 104 fixedly connected to the frame 101 is further provided on one side of the first clamping block 102 . A first telescopic assembly 105 is mounted on the first fixing plate 104 , and an output end of the first telescopic assembly 105 is connected to the pressing block 103 .

[0055] The first telescopic component 105 preferably adopts a cylinder, and in order to ensure that the socket is clamped more firmly, two first telescopic components 105 and two pressing blocks 103 are provided, and the two pressing blocks 103 can be pressed against the back of the socket respectively under the action of the cylinder.

[0056] The plug fixture 2 includes a movable plate 21, and a second clamping block 22 that can be relatively opened and closed along the Y-axis direction and is used to clamp the plug is slidably connected to one side of the movable plate 21; the second clamping block 22 is fixedly mounted on a second clamping plate 27, and the second clamping plate 27 is connected to the movable plate 21 through a linear slide rail; a groove is also provided on the second clamping block 22 for accommodating the side of the plug, and a support plate is provided in the groove, and there is a certain height difference between the support plate and the plug in the plugged state, and the difference is in the range of 10-20mm.

[0057] A support rod 23 parallel to the X-axis direction is fixedly installed on one side of the frame 101, a support plate 24 is provided at the end of the support rod 23, and the movable plate 21 is slidably sleeved on the support rod 23, that is, the movable plate 21 and the frame 101 are slidably connected through the support rod 23.

[0058] The plug fixture 2 mainly plays the role of protecting the product (socket and plug). When the product is in the plugged state, the plug will not have any contact with the plug fixture 2. When the product is separated, the plug will fall into the groove on the second clamping block 22, and will be supported by the support plate (made of non-metallic material with a buffering effect) in the groove to achieve connection with the plug fixture 2. Then, driven by the pull rope 4, the plug fixture 2 is moved away from the socket fixture 1, that is, the moving plate 21 is moved away from the frame 101 along the support rod 23.

[0059] In order to make the socket fixture 1 and the plug fixture 2 universal so as to be able to adapt to different test products, both of them use a clamping block to clamp the product, and the socket fixture 1 is also provided with a pressing block 103 to fix the socket.

[0060] For rectangular sockets and plugs, use Figure 6-Figure 8 for the circular socket, it can be first fixedly mounted on the second fixing plate 107, and then the second fixing plate 107 is placed on the socket fixture 1 for clamping and fixing (such as Fig. 9 As shown); for a round plug, a corresponding ferrule can be installed on the inner side of the second clamping block 22. The left and right ferrules are processed according to the corresponding characteristics of the product, and after the plug is separated from the socket, the left and right ferrules will cover the plug.

[0061] like Figure 1-Figure 3As shown, the pulling mechanism 3 includes a fixed frame 30 located on one side of the frame 101, a gear 31 is rotatably installed on the inner side of the fixed frame 30, a rack 32 meshing with the gear 31 is slidably installed below the gear 31, a driving component 33 for driving the gear 31 to rotate is provided on the outer side of the fixed frame 30, and the output end of the driving component 33 is connected to the gear 31 through a clutch 34; one end of the pull rope 4 is connected to the rack 32, and the other end passes through the rear end of the fixed frame 30 and goes up to the top surface of the fixed frame 30, passes through the angle adjustment mechanism and is connected to the plug.

[0062] As mentioned above, the driving assembly 33 includes a servo motor, an intermediate shaft and a transmission shaft, and the gear 31 is installed on the transmission shaft; the output shaft of the servo motor is connected to the intermediate shaft through a driving transmission structure, and the intermediate shaft is connected to the transmission shaft through a clutch 34.

[0063] Although the drive component 33 uses a servo motor to improve sensitivity and accuracy, it still takes several milliseconds for the servo motor to reach the set speed after receiving the signal. Since the test speed is relatively high, when the speed has not reached 4m / s, the tension mechanism 3 has already run a certain stroke, and the electric separator may have been disengaged at this time.

[0064] In order to ensure that the output speed of the pulling mechanism 3 can be accurately applied to the electric separator when it reaches 4m / s, the mechanism adopts a solution of adding an electromagnetic clutch 34; the electromagnetic clutch 34 is mainly used to ensure that the pulling mechanism 3 has an instantaneous output speed of 4m / s. When the servo motor reaches a certain speed and the output linear speed of the rack 32 reaches 4m / s, the electromagnetic clutch 34 is energized and the gear 31 drives the rack 32 to move. At this time, the pull rope 4 connected to the rack 32 can reach a pulling speed of 4m / s.

[0065] As mentioned above, when the servo motor receives the signal, it starts to rotate. When the specified speed is reached, a signal is sent to engage the electromagnetic clutch 34. After engagement, the electromagnetic clutch 34 has a momentary high speed. The gear 31 is connected to the clutch 34, so it also has a momentary high speed, so that the rack 32 obtains the required output speed.

[0066] The output end of the driving component 33 is connected to the gear 31 through a clutch 34, which can ensure that the power of the driving component 33 is output to the gear 31 when it reaches the target value, so as to drive the pull rope 4 to pull the plug through the rack 32 to complete the test, thereby avoiding the situation where the plug and the socket are separated when the speed of the pull rope 4 does not meet the standard, and the structural layout of the pulling mechanism 3 occupies less space than the prior art.

[0067] Furthermore, in order to facilitate the acquisition of the tension data of the pull rope 4, a second force sensor 11 is provided on the pull rope 4, and in order to reduce the influence of gravity on the force sensor, a bracket 12 is slidably installed on the top of the fixed frame 30 to support the second force sensor 11, that is, the second force sensor 11 is installed on the upper end of the bracket 12, and the lower end is slidably installed on the top of the fixed frame 30 through a linear track.

[0068] There are two linear guide rails above the fixed frame 30 to ensure the stability of the pulling direction; and a first pulley assembly 38 and a second pulley assembly 39 are also provided at the rear end of the fixed frame 30 to facilitate the turning of the pull rope 4.

[0069] In addition, a buffer 301 is installed at the front end of the fixed frame 30, and an impact plate 35 capable of contacting the buffer 301 is installed at the end of the rack 32 opposite to the pull rope; the buffer 301 adopts the existing technology, and when the rack 32 moves, the impact plate 35 at its front end stops after contacting the buffer 301. This structure can not only avoid damage caused by collision, but also enable the rack 32 to stop in time.

[0070] A second telescopic assembly 36 is provided on one side of the rack 32, and a pull-back baffle 37 is connected to the output end of the second telescopic assembly 36, and one end of the pull-back baffle 37 extends between the buffer 301 and the impact plate 35. There is a section of structure without teeth on the rack 32, the purpose of which is to make the gear 31 and the rack 32 disengage in time, and the disengaged rack 32 stops due to inertia and collides with the buffer 301 through the impact plate 35; based on this, the second telescopic assembly 36 uses a cylinder, and its function is to hook the moved rack 32 back to its original position through the pull-back baffle 37.

[0071] like Figure 1-Figure 2 , Figure 5 As shown, the function of the loading mechanism 5 is to simulate the stress conditions of the product in actual use to ensure that the test data is more convincing. That is, one end of the plug is usually connected to the cable, and the gravity of the cable itself will act on the plug. The loading mechanism 5 provides a downward traction force to the plug connected to the socket to ensure that the test data is more accurate and more convincing.

[0072] The loading mechanism 5 includes a base plate 51, a loading pulley assembly 57 and a loading rope 58. Two longitudinal plates 52 are arranged opposite to each other on the base plate 51. A loading screw 53 parallel to the X-axis direction is rotatably installed between the two longitudinal plates 52, and a central connecting plate 55 is screwed on the loading screw 53. The base plate 51 is arranged between the plug fixture 2 and the fixing frame 30, and the loading pulley assembly 57 is arranged on one side of the base plate 51. One end of the loading rope 58 is connected to the central connecting plate 55 through the first force sensor 56, and the other end passes through the loading pulley assembly 57 and is connected to the plug upward.

[0073] The first force sensor 56 is fixedly mounted on the center link plate 55, one end of the loading rope 58 is connected to the first force sensor 56, and the other end extends horizontally to pass through the loading pulley assembly 57 and then is fixedly connected to the plug upward; the loading screw 53 is driven to rotate by the servo motor through the belt transmission structure to drive the center link plate 55 to move along the axial direction of the loading screw 53; the servo motor rotates the loading screw 53 through the belt transmission, driving the force sensor connected to the center link plate 55 to move, so that the loading rope 58 connected to the plug is in a tensioned or relaxed state, and the tension value of the loading rope 58 can be measured by the first force sensor 56; when the tension of the loading rope 58 reaches the set force value, the loading mechanism 5 will maintain this force value until the electrical connector falls off.

[0074] Guide rods 54 are also provided on both sides of the loading screw rod 53. The guide rods 54 are passed through the middle connecting plate 55, and the two ends of the guide rods 54 are fixedly connected to the two longitudinal plates 52 respectively; the guide rods 54 can limit the freedom of the middle connecting plate 55 so that it can only move in a specified direction.

[0075] The function of the loading pulley assembly 57 is to change the direction of force application. The loading is fixed by clamping the outlet of the electrical connector through an adjusting sleeve, and then installing a hook at the end of the loading rope 58 to hang the adjusting sleeve through the hook.

[0076] like Figure 1-Figure 2 , Figure 4 As shown, the angle adjustment mechanism includes a guide assembly, a rotating assembly 6 and a lifting assembly 7. The lifting assembly 7 can drive the guide assembly to move up and down, and the rotating assembly 6 can drive the lifting assembly 7 to rotate around the X-axis. One end of the pull rope 4 passes through the rotating assembly 6, the lifting assembly 7 and the guide assembly in sequence and is connected to the plug.

[0077] The rotating assembly 6 and the lifting assembly 7 cooperate with each other, and the pull rope 4 can be driven to be at different angles relative to the plug through the movement of the guide assembly, so that the device can meet the multi-angle tension test.

[0078] The lifting assembly 7 includes a mounting plate 71 connected to the output end of the rotating assembly 6. An adjusting screw 72 parallel to the Z axis is rotatably mounted on one side of the mounting plate 71. A screw nut 73 is screwed onto the adjusting screw 72. The adjusting screw 72 is driven to rotate by a servo motor through a belt transmission structure.

[0079] The rotating assembly 6 includes a base 61 fixedly mounted on the top of the fixed frame 30, and a rotating shaft 62 is rotatably mounted on the base 61. A through hole for the pull rope 4 to pass through is opened at the center position of the rotating shaft 62, and one end of the rotating shaft 62 is connected to the mounting plate 71, and a worm gear 63 is installed at the other end. A worm 64 meshing with the worm gear 63 is rotatably mounted above the worm gear 63.

[0080] The guide assembly includes a first support block 74 and a second support block 75 arranged opposite to each other, between which two pulley bodies 76 arranged longitudinally are rotatably mounted; the first support block 74 is fixedly mounted on the screw nut 73, and the second support block 75 is slidably mounted on the mounting plate 71 through a linear guide rail.

[0081] In order to ensure the correct direction of the pull rope 4 and reduce friction and wear, a third pulley assembly 77 is also provided on one side of the mounting plate 71. The third pulley assembly 77 is located below the guide assembly. One end of the pull rope 4 passes through the rotating assembly 6 along the through hole, and then passes through the mounting plate 71, the third pulley assembly 77 and between the two pulley bodies 76 in sequence to be connected to the plug.

[0082] Among them, under the joint action of the first support block 74, the second support block 75, the pulley body 76 and the linear guide rail, the freedom of the screw nut 73 can also be limited so that it can only move along the axial direction of the adjusting screw 72.

[0083] The adjusting screw 72 adopts a trapezoidal screw, and the angle of the pull rope 4 in the vertical direction can be changed through the trapezoidal screw, linear guide rail, and guide assembly, and the variable angle is required to be ±30°; the servo motor controls the rotation of the adjusting screw 72 to realize the movement of the screw nut 73 in the vertical direction, and the screw nut 73 can drive the first support block 74, the second support block 75 and the pulley body 76 to move synchronously. Since the pull rope 4 passes through the two pulley bodies 76, its movement changes the angle between the pull rope 4 and the electrical connector.

[0084] In order to realize ±90° rotation of the mounting plate 71, the worm wheel 63 can be installed on the rotating shaft 62, and the servo-controlled worm 64 can rotate to drive the worm wheel 63 to rotate and further drive the mounting plate 71 to rotate. In order to limit the rotation angle range of the rotating shaft 62 and avoid interference between the mounting plate 71 and other components, a limit block 65 is provided on the outer circumferential surface of the rotating shaft 62, and a stop block 66 is provided on the side of the base 61, that is, when the rotating shaft 62 rotates to the limit position, the stop block 66 stops the rotating shaft 62 by intercepting the limit block 65.

[0085] Advantages of angle adjustment mechanism:

[0086] (1) The trapezoidal screw has self-locking properties, which better ensures the stability of the angle;

[0087] (2) The meshing of the worm wheel 63 and the worm 64 is self-locking. When the lead angle of the worm 64 is smaller than the equivalent friction angle between the meshing gear teeth, the mechanism is self-locking, thereby achieving reverse self-locking, that is, only the worm 64 can drive the worm wheel 63 to rotate, but the worm wheel 63 cannot drive the worm 64 to rotate.

[0088] In summary, the first pulley assembly 38, the second pulley assembly 39, the loading pulley assembly 57 and the third pulley assembly 77 all adopt the existing pulley group structure, that is, they include a pulley seat and a pulley, and their function is to change the direction of the pull rope 4 or the loading rope 58, so that the structure of the device is more reasonable; and a power supply 10 is also provided on one side of the loading mechanism 5 for plug connection to facilitate detection.

[0089] Working principle:

[0090] (1) First, the two first clamping blocks 102 are moved relatively close to each other along the linear guide rail to clamp and fix the socket. The first telescopic component 105 pushes the pressing block 103 against the back of the socket to firmly fix it. Then, the plug is plugged into the socket, and the plug is connected to the power supply 10 through a wiring harness.

[0091] (2) The middle connecting plate 55 of the loading mechanism 5 moves along the loading screw rod 53 to pull the loading rope 58. The pulling force can be measured by the first force sensor 56. When the pulling force of the loading rope 58 reaches the set force value, the loading mechanism 5 will maintain the state of this force value until the electrical connector falls off;

[0092] (3) The position of the guide assembly is adjusted by the cooperation of the rotating assembly 6 and the lifting assembly 7, and the angle between the pull rope 4 and the electrical connector is adjusted by the movement position of the guide assembly;

[0093] (4) The tension data of the pull rope 4 can be obtained through the second force sensor 11. After the output speed of the driving component 33 reaches the specified requirement, the clutch 34 is engaged, the gear 31 rotates to drive the rack 32 to move to obtain the required output speed, and the rack 32 is connected to the pull rope 4, driving the pull rope 4 to pull the plug out of the socket;

[0094] (5) After the products are separated, the plug will fall into the groove on the second clamping block 22, and will be supported by the support plate in the groove to achieve connection with the plug clamp 2. Then, driven by the pull rope 4, the plug clamp 2 will be moved away from the socket clamp 1, that is, the moving plate 21 will be moved away from the frame 101 along the support rod 23.

[0095] Embodiment 2

[0096] Based on the first embodiment, the present invention further proposes a protection device for protecting the product from damage during the testing process.

[0097] like Figure 2 , Fig.10 As shown, a guide rod 25 is provided above the support rod 23 and is slidably penetrated on the movable plate 21. One end of the guide rod 25 is fixedly connected to the frame 101, and the other end is fixedly installed with an axial end baffle 26. A spring is also provided between the axial end baffle 26 and the movable plate 21, and the spring is sleeved on the guide rod 25.

[0098] When the product is separated, the plug fixture 2 will move in the direction of the force due to the pulling force. At this time, the spring on the device will play a role, which can convert the kinetic energy generated by the movement of the moving plate 21 into the elastic potential energy of the spring, avoiding excessive impact and damage to the product.

[0099] In order to prevent the movable plate 21 from rebounding under the action of the spring force, thereby preventing the plug from colliding with the socket, a stopper mechanism 8 for fixing the movable plate 21 may be provided below the support rod 23 .

[0100] The stopping mechanism 8 includes a telescopic component 81 installed on one side of the frame 101, a support 82 is fixedly installed on the top of the telescopic component 81, a stop buckle 83 is rotatably installed on the support 82, and when the output end of the telescopic component 81 drives one end of the stop buckle 83 to move upward, the other end of the stop buckle 83 can be against the movable plate 21.

[0101] After the product is completely separated, the output end of the telescopic component 81 extends, driving one end of the stop buckle 83 to flip upward, and the other end to flip downward and rest against the movable plate 21 to fix it; this structure can prevent the plug clamp 2 from rebounding, and can effectively avoid the impact after separation and the collision of the plug and socket caused by rebound.

[0102] The telescopic component 81 preferably adopts a stop cylinder, and a roller is rotatably mounted on one end of the stop buckle 83. During the process of stopping the movable plate 21, the roller contacts it, which can effectively reduce the friction and wear between the two.

[0103] Embodiment 3

[0104] Based on the first and second embodiments, the present invention further proposes an imaging system for recording the product separation process.

[0105] like Figure 1-Figure 2 As shown, the imaging system includes a camera 9 and a position adjustment mechanism for adjusting the position of the camera 9 ; the camera 9 is located above the socket fixture 1 and the plug fixture 2 , and the position adjustment mechanism is disposed on the frame 101 of the socket fixture 1 .

[0106] The position adjustment mechanism includes a support rod 91 parallel to the Z-axis direction, a slider 92 is slidably sleeved on the support rod 91, two slide rods 93 parallel to the X-axis direction are slidably penetrated on the slider 92, and one end of the two slide rods 93 is fixedly connected by a first connecting plate 94, and the other end is fixedly connected by a second connecting plate 95; a mounting seat 97 for mounting the camera 9 is provided on one side of the second connecting plate 95, and the mounting seat 97 is fixedly installed in a slide groove 96 opened on the second connecting plate 95 by fasteners, and the slide groove 96 is parallel to the Y-axis direction.

[0107] As mentioned above, the support rod 91 is fixedly installed on the frame 101. The height of the camera 9 can be adjusted by adjusting the height position of the slider 92 on the support rod 91. The position of the camera 9 in the X-axis direction can be adjusted by adjusting the distance of the second connecting plate 95 relative to the slider 92 through the slider 93. The position of the camera 9 in the Y-axis direction can be adjusted by adjusting the position of the mounting seat 97 relative to the slide groove 96 through the fasteners. A fill light is also connected to one side of the mounting seat 97 to ensure that the camera 9 can clearly record the process of product separation.

[0108] The basic principle of measurement is as follows: Since the high-speed camera exceeds 1000fps per second, the product separation process can be captured vividly, and relevant quality control can be performed through image analysis. Through high-precision measurement scales and coding marks, relevant calibration is performed around the electric separator, and then the displacement and speed of the stretched object in two-dimensional space can be determined. Each captured image is recorded with time. Through the existing software algorithm, the trajectory analysis of the stretched material can be realized, and the curves of speed and displacement, displacement and time, and speed and time can be obtained.

[0109] Embodiment 4

[0110] On the basis of the first, second and third embodiments, the present invention further proposes a test method, using the aforementioned separation performance test device for the separation and fall-off electrical connector, comprising the following steps:

[0111] S1. First, fix the socket on the socket fixture 1, and then insert the plug into the socket. At this time, the plug does not contact the plug fixture 2;

[0112] S2, connecting one end of the pull rope 4 and the loading rope 58 to the plug, and using the loading mechanism 5 to apply a certain load force to the plug through the loading rope 58;

[0113] S3, adjusting the angle of the pull cord 4 relative to the plug through the angle adjustment mechanism, and making the pull cord 4 tight;

[0114] S4, applying a certain speed of tension to the pull rope 4 through the tension mechanism 3, so that the pull rope 4 pulls the plug and the socket to separate, and the separation process is recorded by the camera 9;

[0115] S5. After the plug is separated from the socket, the plug falls into the plug fixture 2. Under the action of inertia, the plug and the plug fixture 2 are separated relative to the socket fixture 1.

[0116] S6. When the plug fixture 2 moves away from the socket fixture 1, the spring is compressed to buffer the movable plate 21, and the stop buckle 83 of the stop mechanism 8 turns over and abuts against the movable plate 21 to prevent it from rebounding.

[0117] In step S1, the two first clamping blocks 102 are relatively close to each other along the linear guide rail to clamp and fix the socket, and then the first telescopic component 105 pushes the pressing block 103 to press against the back of the socket to fix it firmly. After the plug and the socket are plugged in, the plug and the power supply 10 are connected through a wiring harness.

[0118] In step S2, the middle connecting plate 55 of the loading mechanism 5 moves along the loading screw 53 to pull the loading rope 58, and the pulling force can be measured by the first force sensor 56. When the tension of the loading rope 58 reaches the set force value, the loading mechanism 5 will maintain this force value until the electrical connector falls off.

[0119] In step S3, the worm gear 63 of the rotating component 6 can drive the rotating shaft 62 to rotate within the range of ±90°, and the rotating shaft 62 can drive the lifting component 7 to rotate synchronously therewith. The lifting component 7 can drive the guide component to move within the range of ±30° through a screw transmission. The pull rope 4 passes through the guide component, so the angle between the pull rope 4 and the electrical connector can be adjusted by the moving position of the guide component, and ensure that the pull rope 4 is in a tensioned state.

[0120] In step S4, the tension data of the pull rope 4 can be obtained through the second force sensor 11. When the output speed of the driving component 33 reaches the specified requirement, the clutch 34 is engaged, the gear 31 rotates to drive the rack 32 to move to obtain the required output speed, and the rack 32 is connected to the pull rope 4, which can drive the pull rope 4 to pull the plug out of the socket. In this process, the camera 9 can vividly capture the product separation process and perform relevant quality control through image analysis.

[0121] The output linear velocity of the rack 32 is calculated as follows:

[0122] The relationship between the linear velocity v of the rack 32 and the pitch circle diameter d and the rotation speed n is:

[0123]

[0124] Where d is the gear pitch circle diameter, unit: mm;

[0125] n is the gear speed, in r / min;

[0126] Based on this, the linear motion speed of the rack 32 can be calculated.

[0127] In step S5, when the product is in the plugged state, the plug will not have any contact with the plug clamp 2. When the product is separated, the plug will fall into the groove on the second clamp 22, and be supported by the support plate in the groove to achieve connection with the plug clamp 2. Then, driven by the pull rope 4, the plug clamp 2 is moved away from the socket clamp 1, that is, the moving plate 21 is moved away from the frame 101 along the support rod 23.

[0128] In step S6, after the product is separated, the plug fixture 2 will move in the direction of the force due to the pulling force. At this time, the spring on the device plays a role, and the kinetic energy generated when the moving plate 21 moves can be converted into the elastic potential energy of the spring to avoid excessive impact and damage to the product. In order to prevent the moving plate 21 from rebounding under the action of the spring elastic force, causing a collision between the plug and the socket, after the product is completely separated, the output end of the telescopic component 81 extends, driving one end of the stop buckle 83 to flip upward, and the other end to flip downward and abut against the moving plate 21 to fix it.

[0129] In summary, the separation performance test device for separating and falling-off electrical connectors proposed in the present invention can be applied to various separation and falling-off electrical connector tests through the structure of the socket fixture 1 and the plug fixture 2, thereby increasing the versatility of the product; the space occupied by the tension mechanism 3 can be reduced, so that the output value is the required value; the load is applied to the plug through the loading mechanism 5 to simulate the stress condition of the product in actual use, thereby improving the authenticity of the test data; the product can be subjected to multi-angle force testing through the angle adjustment mechanism to comprehensively evaluate the product performance; the product separation process can be recorded through the camera 9, and data analysis can be performed in combination with the software to improve the reliability of the data. In short, the device has the advantages of multi-functional testing, simplified procedures, improved efficiency, and reduced costs.

[0130] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0131] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0132] The above is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A separation performance test device for a separation-and-detachment electrical connector, Features: It comprises a socket clamp (1), a plug clamp (2), a pulling mechanism (3), and a pulling rope (4) connecting the plug and the pulling mechanism (3), wherein the pulling mechanism (3) drives the pulling rope (4) to pull the plug so that the plug clamp (2) is separated from the socket clamp (1); An angle adjustment mechanism for adjusting the direction of the pull rope (4) is provided at the front end of the pull mechanism (3), and a loading mechanism (5) for applying a load tension to the plug is also provided between the pull mechanism (3) and the plug fixture (2); The pulling mechanism (3) comprises a fixing frame (30), a gear (31) is rotatably mounted on the inner side of the fixing frame (30), a rack (32) meshing with the gear (31) is slidably mounted below the gear (31), one end of the pulling rope (4) is connected to the rack (32), and the other end passes through the rear end of the fixing frame (30) and is wound upward to the top of the fixing frame (30), passes through the angle adjustment mechanism, and is connected to the plug; A driving assembly for driving the gear (31) to rotate is also provided on the outer side of the fixing frame (30), and an output end of the driving assembly is connected to the gear (31) via a clutch (34); The angle adjustment mechanism comprises a lifting component (7) and a rotating component (6) capable of driving the lifting component (7) to rotate around an X-axis, wherein the rotating component (6) is mounted on the top of the fixing frame (30); The lifting component (7) comprises a mounting plate (71) connected to the output end of the rotating component (6); a guide component capable of lifting and lowering is provided on one side of the mounting plate (71); and one end of the pull rope (4) passes through the rotating component (6), the mounting plate (71) and the guide component in sequence and is then connected to a plug; The guide assembly comprises a first support block (74) and a second support block (75) arranged opposite to each other, between which two pulley bodies (76) arranged in the longitudinal direction are rotatably mounted, and the pull rope (4) passes through between the two pulley bodies (76); An adjusting screw (72) parallel to the Z axis is rotatably mounted on one side of the mounting plate (71); a screw nut (73) is screwed onto the adjusting screw (72); the first support block (74) is fixedly mounted on the screw nut (73); and the second support block (75) is slidably mounted on the mounting plate (71); The rotating assembly (6) comprises a base (61) fixedly mounted on the top of the fixing frame (30), a rotating shaft (62) being rotatably mounted on the base (61), a through hole for the pull rope (4) to pass through being opened at the center of the rotating shaft (62), one end of the rotating shaft (62) is connected to the mounting plate (71), and a worm gear (63) is mounted on the other end, and a worm (64) meshing with the worm gear (63) is rotatably mounted above the worm gear (63); The socket clamp (1) comprises a frame (101) located on one side of the fixing frame (30); one side of the frame (101) is slidably connected to two first clamping blocks (102) capable of opening and closing relative to each other along the Y-axis direction and used to clamp the socket; one side of the first clamping block (102) is provided with a pressing block (103) capable of moving along the X-axis direction and abutting against the back of the socket; The plug clamp (2) comprises a movable plate (21), one side of the movable plate (21) being slidably connected to a second clamping block (22) capable of opening and closing relatively along the Y-axis direction and used for clamping the plug; The movable plate (21) and the frame (101) are connected via a support rod (23) parallel to the X-axis direction, and the movable plate (21) is slidably sleeved on the support rod (23); The loading mechanism (5) comprises a base plate (51), a loading pulley assembly (57) and a loading rope (58); two longitudinal plates (52) are arranged opposite to each other on the base plate (51); a loading screw rod (53) parallel to the X-axis direction is rotatably mounted between the two longitudinal plates (52); a middle connecting plate (55) is screwed onto the loading screw rod (53); The base plate (51) is arranged between the plug fixture (2) and the fixing frame (30), the loading pulley assembly (57) is arranged on one side of the base plate (51), and one end of the loading rope (58) is connected to the central connecting plate (55) through a first force sensor (56), and the other end passes through the loading pulley assembly (57) and is connected to the plug upward.

2. The separation performance testing device for the separation and fall-off electrical connector according to claim 1, Features: A buffer (301) is installed at the front end of the fixing frame (30), and an impact plate (35) capable of contacting the buffer (301) is installed at the end of the rack (32) opposite to the pull rope; A second telescopic assembly (36) is provided on one side of the rack (32); an output end of the second telescopic assembly (36) is connected to a pull-back baffle (37); and one end of the pull-back baffle (37) extends between the buffer (301) and the impact plate (35).

3. The separation performance testing device for the separation and fall-off electrical connector according to claim 1, Features: A guide rod (25) is arranged above the support rod (23) and is slidably mounted on the movable plate (21); one end of the guide rod (25) is fixedly connected to the frame (101), and the other end of the guide rod (25) is fixedly mounted with an axial end baffle (26); and a spring is also arranged between the axial end baffle (26) and the movable plate (21); A stopper mechanism (8) for fixing the movable plate (21) is provided below the support rod (23); The stop mechanism (8) comprises a telescopic component (81) mounted on one side of the frame (101); a support (82) is fixedly mounted on the top of the telescopic component (81); a stop buckle (83) is rotatably mounted on the upper side of the support (82); and when the output end of the telescopic component (81) drives one end of the stop buckle (83) to move upward, the other end of the stop buckle (83) can abut against the movable plate (21).

4. The separation performance testing device for a separation-and-detachment electrical connector according to any one of claims 1 to 3, Features: A second force sensor (11) is provided on the pull rope (4), and a bracket (12) for supporting the second force sensor (11) is slidably mounted on the top of the fixing frame (30).

5. The separation performance testing device for the separation and fall-off electrical connector according to claim 4, Features: A camera (9) is arranged above the socket fixture (1) and the plug fixture (2), and a position adjustment mechanism for adjusting the position of the camera (9) is also arranged on the socket fixture (1).

Images