A test device for detecting a plugging force of a machine

Abstract

The utility model discloses a kind of plug-in force testing devices of test detection machinery, it is related to plug-in test technical field, including workbench and controller, the workbench upper end elastically movably set up usb female seat, one end of the usb female seat is provided with loudspeaker mouth, the workbench upper end is also provided with S type force sensor and fixture for fixed male usb, the periphery of loudspeaker mouth is provided with ball element, the ball element includes ball and connecting rod, the connecting rod and ball are all arranged in the barrel of loudspeaker mouth, the periphery of loudspeaker mouth is provided with pressure sensor.The utility model has beneficial effect for: by setting ball element with ball in loudspeaker mouth barrel wall, when male usb is inserted, ball is in contact with male usb surface and occurs rolling, the sliding friction between traditional loudspeaker mouth inner wall and male is converted into rolling friction, the abrasion to the periphery of male usb is reduced, the position of male usb is adjusted simultaneously by second driving element, and the butt-joint offset of male and female seat is corrected.

Description

Technical Field

[0001] This utility model relates to the field of insertion and extraction testing technology, and in particular to an insertion and extraction force testing device for testing machinery. Background Technology

[0002] The core purpose of conducting mechanical insertion and removal force tests on USB male connectors is to verify whether they meet industry standards and product design requirements during long-term plugging and unplugging use. This ensures that the insertion and removal force of the USB male connector and female connector is moderate, neither too loose, which would lead to loose connection and poor contact, nor too tight, which would cause difficulties for users or damage to the USB male connector / female connector structure after frequent plugging and unplugging. At the same time, it tests the mechanical strength and assembly stability of the internal terminals, shell and other components of the USB male connector.

[0003] Existing technology mainly controls the movement of the USB male connector and its engagement with the flexible female connector through a drive device. The tightness is determined by detecting the force of the USB male connector being inserted or removed using an S-shaped force sensor (insertion force sensor) between the drive device and the clamp. Currently, in order to prevent excessive offset when USB male connectors of different thicknesses are clamped and engaged with the flexible female connector, a flared opening is mainly set at the insertion end of the female connector to guide the USB male connector.

[0004] However, this method has wear issues: the rigid sliding guide between the inner wall of the flared opening and the outer periphery of the USB male connector will wear down the insertion / removal coefficient. Additionally, there is the problem of inaccurate testing: when the USB male connector experiences severe axial misalignment due to thickness or other reasons, the elastic female connector will still exert pressure on the USB male connector, leading to inaccurate insertion / removal tests. Therefore, we propose a mechanical insertion / removal force testing device to solve the problems encountered in existing technologies. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A testing device for insertion and extraction force of a testing and inspection machine includes a worktable and a controller. A USB female connector is elastically and movably mounted on the upper end of the worktable. One end of the USB female connector has a flared opening. An S-shaped force sensor and a clamp are also mounted on the upper end of the worktable for fixing a USB male connector. A ball bearing is mounted around the flared opening. The ball bearing includes a ball and a connecting rod. Both the connecting rod and the ball are mounted inside the cylinder of the flared opening. A pressure sensor is mounted around the flared opening.

[0008] As a preferred embodiment of the insertion and extraction force testing device for the testing and inspection machinery described in this utility model, the controller is fixed on the right side of the workbench, and a first driving component is provided on the upper end of the workbench. The first driving component includes a stepper motor fixed on the upper end of the workbench. A lead screw is fixed to the output end of the stepper motor through a flange, and one end of the lead screw is rotatably connected to the upper end of the workbench through a bearing seat. A lead screw sleeve is provided with threads on the outer periphery of the lead screw, and an S-shaped force sensor is fixed to the upper end of the lead screw sleeve. One end of the S-shaped force sensor is fixed to a clamp by bolts.

[0009] As a preferred embodiment of the insertion and extraction force testing device for the testing and inspection machinery described in this utility model, wherein: an electric telescopic rod is fixed to the upper end of the clamp, and a pressure block is fixed to the output end of the electric telescopic rod for pressing against the upper end of the USB male connector.

[0010] As a preferred embodiment of the insertion and extraction force testing device for the testing and inspection machinery described in this utility model, the upper end of the workbench is provided with a second driving component, the second driving component includes a Y-axis electric slide rail, the output end of the Y-axis electric slide rail is fixed with a vertical plate, one side of the vertical plate is fixed with a Z-axis electric slide rail, and the output end of the Z-axis electric slide rail is fixed with a USB male connector.

[0011] As a preferred embodiment of the insertion and extraction force testing device for the testing and inspection machinery described in this utility model, a U-shaped frame is provided at the left end of the USB male connector, and a V-shaped spring is welded between the inner wall of the U-shaped frame and the front and rear walls of the USB female connector.

[0012] As a preferred embodiment of the insertion and extraction force testing device for the testing and inspection machinery described in this utility model, the output end of the Z-axis electric slide rail is fixed with a connecting block by bolts, and a V-shaped spring is also welded between the inner side of the connecting block and the outer surface of the U-shaped frame.

[0013] In a preferred embodiment of the insertion and extraction force testing device for the testing and inspection machinery described in this utility model, a rectangular frame is fixed to the periphery of the flared opening by a bracket, and a pressure sensor is fixed to the inner wall of the rectangular frame.

[0014] In a preferred embodiment of the insertion and extraction force testing device for the testing and inspection machinery described in this utility model, a connecting rod passes through the inner wall of the bell-shaped opening, and one end of the connecting rod is rotatably connected to a ball bearing by an embedded method.

[0015] In a preferred embodiment of the insertion and extraction force testing device for the testing and inspection machinery described in this utility model, a portion of the ball bearing is located inside the cylindrical wall of the flared opening.

[0016] As a preferred embodiment of the insertion and extraction force testing device for the testing and inspection machinery described in this utility model, a spring is sleeved around the connecting rod, one end of the spring is welded to the outer surface of the flared mouth, and the other end of the spring is welded to one end of the connecting rod.

[0017] The beneficial effects of this utility model are:

[0018] 1. By setting a ball bearing inside the flared mouth cylinder wall, when the USB male connector is inserted, the ball bearing contacts the surface of the USB male connector and rolls, transforming the sliding friction between the traditional flared mouth inner wall and the male connector into rolling friction, thus reducing wear on the outer periphery of the USB male connector.

[0019] 2. When the USB male connector shifts due to thickness differences, the squeezing force between it and the ball bearings will push the connecting rod to move and trigger the pressure sensor. The pressure sensor will then send a signal to the controller. Based on this signal, the controller will adjust the position of the USB male connector via the Y-axis and Z-axis electric slide rails of the second drive unit, correcting the misalignment between the male and female connectors. This prevents the elastic female connector from applying additional pressure due to the male connector's misalignment, ensuring that the force value detected by the S-type force sensor is only the normal insertion and extraction force, thus eliminating test errors caused by misalignment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0021] Figure 1 This is a schematic diagram of an insertion and extraction force testing device for a testing and inspection machine.

[0022] Figure 2 This is a front view of an insertion and extraction force testing device for a testing and inspection machine.

[0023] Figure 3 This is a schematic diagram showing the connection between the USB female connector and the ball bearing of a test device for inserting and removing force of a testing machine.

[0024] Figure 4 An insertion and extraction force testing device for a testing and inspection machine. Figure 1 Enlarged diagram of point A in the middle.

[0025] The diagram is labeled as follows: 1. Workbench; 2. Controller; 3. Drive component 1; 31. Stepper motor; 32. Lead screw; 33. Lead screw sleeve; 34. Fixture; 35. Electric telescopic rod; 36. Pressure block; 4. USB male connector; 5. USB female connector; 51. Flared mouth; 52. U-shaped frame; 53. V-shaped spring; 54. Connecting block; 6. Ball bearing component; 61. Ball bearing; 62. Connecting rod; 63. Pressure sensor; 64. Spring; 7. Drive component 2; 71. Y-axis electric slide rail; 72. Vertical plate; 73. Z-axis electric slide rail; 8. S-shaped force sensor. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0029] Example 1:

[0030] Specifically, refer to Figures 1 to 4 This is the first embodiment of the present invention. This embodiment provides a test device for inserting and pulling force of testing machinery, including a workbench 1 and a controller 2. A USB female connector 5 is elastically and movably provided on the upper end of the workbench 1. One end of the USB female connector 5 is provided with a flared opening 51. An S-shaped force sensor 8 and a clamp 34 are also provided on the upper end of the workbench 1 for fixing a USB male connector 4. A ball bearing 6 is provided around the flared opening 51. The ball bearing 6 includes a ball 61 and a connecting rod 62. The connecting rod 62 and the ball 61 are both provided in the cylinder of the flared opening 51. A pressure sensor 63 is provided around the flared opening 51.

[0031] The controller 2 controls the operation of the entire device. The flexible and movable USB female connector 5, with its flared end 51, facilitates docking with the USB male connector 4 and provides flexible adjustment space for subsequent adaptation to different USB male connectors 4 and correction of misalignment. The S-shaped force sensor 8 is responsible for collecting force signals during the test. The ball bearing 6 works in conjunction with the pressure sensor 63 around the flared end 51. On the one hand, the ball bearing 61 reduces wear when the USB male connector 4 is inserted. On the other hand, the pressure is transmitted through the connecting rod 62 to trigger the sensor, providing signal support for detecting misalignment. The overall structural design initially solves the problem of wear and docking misalignment affecting accuracy in traditional testing.

[0032] Example 2:

[0033] Reference Figure 1 and Figure 4 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0034] Specifically, a controller 2 is fixed on the right side of the workbench 1, and a first drive component 3 is provided at the upper end of the workbench 1. The first drive component 3 includes a stepper motor 31 fixed at the upper end of the workbench 1. A lead screw 32 is fixed to the output end of the stepper motor 31 through a flange, and one end of the lead screw 32 is rotatably set with the upper end of the workbench 1 through a bearing seat. A lead screw sleeve 33 is provided on the outer thread of the lead screw 32. An S-type force sensor 8 is fixed at the upper end of the lead screw sleeve 33, and one end of the S-type force sensor 8 is fixed to a clamp 34 by a bolt.

[0035] The stepper motor 31, lead screw 32, and lead screw sleeve 33 work together to provide stable and controllable axial movement power for the clamp 34 and USB male connector 4. The S-shaped force sensor 8 is connected in series between the lead screw sleeve 33 and the clamp 34 to build the basic structure for subsequent detection of insertion and extraction force values.

[0036] Specifically, an electric telescopic rod 35 is fixed to the upper end of the clamp 34, and a pressure block 36 is fixed to the output end of the electric telescopic rod 35 for pressing against the upper end of the USB male connector 4.

[0037] By configuring the electric telescopic rod 35 and the pressure block 36 on the fixture 34, the electric telescopic rod 35 drives the pressure block 36 to firmly fix the USB male connectors 4 of different thicknesses, avoiding the impact of male connector displacement on the detection accuracy during testing. It should be noted that the fixture 34 is a pneumatic gripper, which uses compressed air as a power source. Compressed air enters the cylinder chamber inside the gripper, pushing the piston in the cylinder to make linear motion. The piston's motion is then converted into the opening and closing action of the gripper fingers through mechanical transmission mechanisms such as gear racks, cranks, and cams, realizing the gripping or releasing of the workpiece; this is existing technology and will not be described in detail.

[0038] Specifically, a second drive component 7 is installed at the upper end of the workbench 1. The second drive component 7 includes a Y-axis electric slide rail 71. A vertical plate 72 is fixed to the output end of the Y-axis electric slide rail 71. A Z-axis electric slide rail 73 is fixed to one side of the vertical plate 72. A USB male connector 4 is fixed to the output end of the Z-axis electric slide rail 73. A U-shaped frame 52 is installed at the left end of the USB male connector 4. V-shaped spring pieces 53 are welded between the inner wall of the U-shaped frame 52 and the front and rear walls of the USB female connector 5. A connecting block 54 is fixed to the output end of the Z-axis electric slide rail 73 by bolts. A V-shaped spring piece 53 is also welded between the inner side of the connecting block 54 and the outer surface of the U-shaped frame 52.

[0039] The USB male connector 4 can be adjusted in the horizontal and vertical directions by means of the Y-axis electric slide rail 71 and the Z-axis electric slide rail 73. At the same time, the cooperation of the U-shaped bracket 52 and the V-shaped spring 53 provides elastic fine-tuning space for the USB female connector 5 and the male connector 4 to help correct the docking misalignment.

[0040] Specifically, a rectangular frame is fixed to the periphery of the flared opening 51 by a bracket, and a pressure sensor 63 is fixed to the inner wall of the rectangular frame. A connecting rod 62 passes through the inner wall of the flared opening 51, and one end of the connecting rod 62 is rotatably connected to a ball bearing 61 by an embedded method. Part of the ball bearing 61 is located inside the inner wall of the flared opening 51.

[0041] The ball bearing 61 provides the basis for rotation and force-driven movement, and also allows the pressure sensor 63 to accurately receive the pressure signal transmitted by the connecting rod 62, thereby realizing the detection of the offset of the USB male connector 4.

[0042] Example 3:

[0043] Reference Figure 1 and Figure 3 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0044] Specifically, a spring 64 is sleeved around the connecting rod 62. One end of the spring 64 is welded to the outer surface of the flared mouth 51, and the other end of the spring 64 is welded to one end of the connecting rod 62.

[0045] The elastic reset function of spring 64 drives the connecting rod 62 and ball 61 back to their initial position after the USB male connector 4 is plugged in or unplugged, preparing for the next test. At the same time, it buffers the movement speed of the connecting rod 62 when the male connector is inserted, preventing the pressure sensor 63 from being damaged due to excessive force.

[0046] It should be noted that the offset direction and adjustment amount are calculated as follows: When the controller 2 determines that the USB male connector 4 has offset, it determines the offset direction based on the characteristics of the pressure signal. For example, if the pressure sensor 63 on a certain side has abnormally high pressure, it indicates that the USB male connector 4 has offset to that side. At the same time, based on the degree of offset output by the offset judgment model and combined with the pre-set mapping relationship, the distance that needs to be adjusted in the Y-axis electric slide rail 71 and Z-axis electric slide rail 73 is calculated.

[0047] The spring 64 has parameters such as its elastic modulus, free length, and compression range. For example, the elastic modulus is 10 N / mm, the free length is 30 mm, and the maximum compression is 10 mm. This ensures that the spring 64 can be compressed smoothly when the USB male connector 4 is inserted, and can effectively drive the connecting rod 62 and the ball 61 to return to their original position after being pulled out. At the same time, it avoids excessive impact on the pressure sensor 63 caused by the connecting rod 62 due to excessive spring force of the spring 64.

[0048] Working principle: Controller 2 controls the operation of each component. When testing USB male connectors of different thicknesses, clamp 34 initially fixes the USB male connector 4. The electric telescopic rod 35 on clamp 34 drives the pressure block 36 to press and reinforce the USB male connector 4. Then, the stepper motor 31 of the first drive component 3 starts, driving the lead screw 32 to rotate, causing the lead screw sleeve 33 to move along the axial direction of the lead screw 32. In turn, the S-shaped force sensor 8 drives the clamp 34 and the USB male connector 4 to move towards the USB female connector 5.

[0049] When the USB male connector 4 is inserted, it first contacts the ball bearing 61 inside the flared opening 51 of the USB female connector 5. The ball bearing 61 rotates as the USB male connector 4 moves. At the same time, the squeezing force of the USB male connector 4 on the ball bearing 61 pushes the connecting rod 62 to move outward from the flared opening 51, compressing the spring 64 on the outside of the connecting rod 62, until one end of the connecting rod 62 contacts the pressure sensor 63 on the inner wall of the rectangular frame outside the flared opening 51. The pressure sensor 63 converts the detected pressure signal into an electrical signal and transmits it to the controller 2.

[0050] The controller 2 determines whether the USB male connector 4 is offset and the degree of offset based on the signal from the pressure sensor 63, and then adjusts the Y-axis electric slide rail 71 and Z-axis electric slide rail 73 of the second drive component 7 to adjust the position of the USB male connector 4. During this process, the S-shaped force sensor 8 detects the force value signal of the USB male connector 4 in real time during the insertion and removal process and transmits it to the controller 2. Finally, the controller 2 analyzes the force value data to complete the insertion and removal force test.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for testing the insertion and extraction force of a test machine, comprising a workbench (1) and a controller (2), wherein a USB female connector (5) is elastically and movably disposed on the upper end of the workbench (1), one end of the USB female connector (5) is provided with a flared opening (51), and an S-shaped force sensor (8) and a clamp (34) are also provided on the upper end of the workbench (1) for fixing a USB male connector (4), characterized in that: A ball bearing (6) is provided around the horn opening (51). The ball bearing (6) includes a ball (61) and a connecting rod (62). The connecting rod (62) and the ball (61) are both located inside the cylinder of the horn opening (51). A pressure sensor (63) is provided around the horn opening (51).

2. The insertion and extraction force testing device for testing machinery as described in claim 1, characterized in that: The controller (2) is fixed on the right side of the workbench (1). A first drive component (3) is provided at the upper end of the workbench (1). The first drive component (3) includes a stepper motor (31) fixed at the upper end of the workbench (1). A lead screw (32) is fixed to the output end of the stepper motor (31) through a flange. One end of the lead screw (32) is rotatably connected to the upper end of the workbench (1) through a bearing seat. A lead screw sleeve (33) is provided on the outer thread of the lead screw (32). An S-shaped force sensor (8) is fixed at the upper end of the lead screw sleeve (33). One end of the S-shaped force sensor (8) is fixed to a clamp (34) by a bolt.

3. The insertion and extraction force testing device for testing machinery as described in claim 2, characterized in that: An electric telescopic rod (35) is fixed to the upper end of the clamp (34), and a pressure block (36) is fixed to the output end of the electric telescopic rod (35) to press against the upper end of the USB male connector (4).

4. The insertion and extraction force testing device for testing machinery as described in claim 2, characterized in that: The upper end of the workbench (1) is provided with a second drive unit (7), which includes a Y-axis electric slide rail (71). The output end of the Y-axis electric slide rail (71) is fixed with a vertical plate (72), and a Z-axis electric slide rail (73) is fixed on one side of the vertical plate (72). The output end of the Z-axis electric slide rail (73) is fixed with a USB male connector (4).

5. The insertion and extraction force testing device for testing machinery as described in claim 4, characterized in that: The left end of the USB male connector (4) is provided with a U-shaped frame (52), and a V-shaped spring piece (53) is welded between the inner wall of the U-shaped frame (52) and the front and rear walls of the USB female connector (5).

6. The insertion and extraction force testing device for testing machinery as described in claim 5, characterized in that: The output end of the Z-axis electric slide rail (73) is fixed with a connecting block (54) by bolts, and a V-shaped spring sheet (53) is also welded between the inner side of the connecting block (54) and the outer surface of the U-shaped frame (52).

7. The insertion and extraction force testing device for testing machinery as described in claim 1, characterized in that: A rectangular frame is fixed to the periphery of the horn (51) by a bracket, and a pressure sensor (63) is fixed to the inner wall of the rectangular frame.

8. The insertion and extraction force testing device for testing machinery as described in claim 7, characterized in that: A connecting rod (62) passes through the inner wall of the bell mouth (51), and one end of the connecting rod (62) is rotatably connected to a ball bearing (61) by an embedded manner.

9. The insertion and extraction force testing device for testing machinery as described in claim 8, characterized in that: Part of the ball bearing (61) is located inside the cylinder wall of the flared opening (51).

10. The insertion and extraction force testing device for testing machinery as described in claim 9, characterized in that: A spring (64) is sleeved around the connecting rod (62). One end of the spring (64) is welded to the outer surface of the horn mouth (51), and the other end of the spring (64) is welded to one end of the connecting rod (62).

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