Vibration test clamping device of vehicle-mounted electric connector

Abstract

The utility model relates to a vibration test clamping device for a vehicle-mounted electric connector. The vibration test clamping device comprises a base mounting plate, an axial clamping top cover unit, a radial clamping top cover unit, an axial clamping base unit, a radial clamping base unit, a wire collecting pipe and a wire duct plate. The beneficial effects of the utility model are that the radial clamping pedestal and the axial clamping pedestal are designed, and the radial clamping pedestal and the axial clamping pedestal are allowed to be connected with each other and to be installed on the pedestal installation plate at the same time, so that simultaneous clamping of the vehicle-mounted electric connector in the axial direction and the radial direction is realized; therefore, the reliability and durability of the vehicle-mounted electric connector in actual use can be evaluated more comprehensively.

Description

Technical Field

[0001] The utility model relates to the field of vehicle-mounted electric connectors, and in particular comprises a vibration test clamping device for a vehicle-mounted electric connector. Background Art

[0002] Vehicles are inevitably subject to vibrations while driving. These vibrations can easily loosen the plugs and sockets of internal electrical connectors, leading to poor contact or damage. This can easily disrupt the vehicle's internal circuits, impacting the vehicle's safety and service life. To ensure the reliability of automotive electrical connectors in vibrating environments, vibration tests are required to assess their stability. Existing automotive vibration tests often record road conditions on a vibration test bench to simulate the vibration conditions experienced during driving. However, placing the automotive electrical connectors on a vibration test bench in a more stable and appropriate manner would have a significant impact on the test.

[0003] In order to adapt to the clamping of vehicle-mounted electrical connectors on the vibration test bench, it is necessary to design a clamping device for vehicle-mounted electrical connectors to assist in conducting vibration tests more comprehensively and efficiently. Utility Model Content

[0004] The purpose of this utility model is to overcome the deficiencies in the prior art and provide a vibration test clamping device for a vehicle-mounted electrical connector, comprising:

[0005] Base mounting plate, axial clamping top cover unit, radial clamping top cover unit, axial clamping base unit, radial clamping base unit, collection pipe and wire trough plate;

[0006] Among them, the axial clamping top cover unit and the radial clamping top cover unit are connected to the axial clamping base unit and the radial clamping base unit by screws; the axial clamping base unit and the radial clamping base unit are connected to each other and installed on the base mounting plate to achieve simultaneous clamping of axial and radial vehicle-mounted electrical connectors; the wire trough plate is installed on the base mounting plate, and the collection pipe is connected to the center thread of the wire trough plate.

[0007] Preferably, the axial clamping top cover unit includes a first axial clamping top cover, a second axial clamping top cover, a third axial clamping top cover and a fourth axial clamping top cover; the radial clamping top cover unit includes a first radial clamping top cover, a second radial clamping top cover, a third radial clamping top cover and a fourth radial clamping top cover; and each clamping top cover is separated from each other.

[0008] Preferably, the axial clamping base unit includes a first axial clamping base and a second axial clamping base, and the radial clamping base unit includes a first radial clamping base and a second radial clamping base; the axial clamping base unit and the radial clamping base unit are fixed to each other by bolts and nuts.

[0009] Preferably, the axial clamping base unit and the radial clamping base unit are both provided with a semicircular groove, the semicircular groove consists of two parts, a plug circular groove and a socket circular groove, and the plug circular groove is coaxial with the socket circular groove, the radius of the socket circular groove is larger than the radius of the plug circular groove, and the outer end of the plug circular groove is provided with a groove.

[0010] Preferably, the upper surface of the wire trough plate is provided with a wire trough; the wires of the vehicle-mounted electrical connector are fixed in the wire trough and gathered at the center of the wire trough plate to enter the collection pipe.

[0011] Preferably, the wires of the vehicle-mounted electrical connector are gathered and led out from the collection tube and connected to the host computer, acquisition card, controlled current source and ammeter.

[0012] The beneficial effects of the utility model are:

[0013] 1) The present invention achieves simultaneous axial and radial clamping of the vehicle-mounted electrical connector by designing a radial clamping base and an axial clamping base, and allowing them to be connected to each other and simultaneously mounted on the base mounting plate. This design enables a more comprehensive assessment of the reliability and durability of the vehicle-mounted electrical connector in actual use during vibration testing.

[0014] 2) The radial and axial clamping caps in this invention are connected to the corresponding bases via screws through holes in their four corners, and the clamping caps are separated from each other. This design achieves the effect of independently clamping the on-board electrical connector, preventing individual differences in on-board electrical connectors from affecting the overall vibration test.

[0015] 3) The present invention realizes effective management of the vehicle-mounted electrical connector wires by designing the wire trough plate and the wire collection pipe, thereby reducing the impact of the wire swing on the vibration test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an axonometric diagram of a vibration test clamping device for a vehicle-mounted electrical connector provided by the utility model;

[0017] Figure 2 This is an axonometric view of the axial clamping base and clamping top cover assembly provided by the utility model;

[0018] Figure 3 This is an axonometric view of the axial clamping base provided by the utility model;

[0019] Figure 4 This is an axonometric view of the clamping top cover provided by the utility model;

[0020] Figure 5 This is an axonometric drawing of the cable collection plate provided by the present utility model;

[0021] Figure 6This is an axonometric drawing of the cable trunking tube provided by the utility model;

[0022] Figure 7 It is a test flow chart provided by the utility model;

[0023] Figure 8 It is a circuit principle diagram provided by the utility model;

[0024] Explanation of the accompanying drawings: 1. Base mounting plate; 2. First axial clamping top cover; 3. Second axial clamping top cover; 4. First radial clamping top cover; 5. Second radial clamping top cover; 6. Third axial clamping top cover; 7. Fourth axial clamping top cover; 8. Third radial clamping top cover; 9. Fourth radial clamping top cover; 10. First axial clamping base; 11. First radial clamping base; 12. Second axial clamping base; 13. Second radial clamping base; 14. Line collection pipe; 15. Wire trough board, upper computer 16, acquisition card 17, controlled current source 18, ammeter 19, welding point 29, first contact point 30, second contact point 31, first clamping point 32, second clamping point 33. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the following embodiments. The following embodiments are provided solely to facilitate understanding of the present invention. It should be noted that, within the scope of the present invention, modifications may be made by a person skilled in the art without departing from the principles of the present invention. Such improvements and modifications are also within the scope of the claims of the present invention.

[0026] As an example, Figures 1 to 6 As shown, the vibration test clamping device for vehicle-mounted electrical connectors includes:

[0027] Base mounting plate 1, axial clamping top cover unit, radial clamping top cover unit, axial clamping base unit, radial clamping base unit, collection pipe 14 and line trough plate 15;

[0028] Among them, the axial clamping top cover unit and the radial clamping top cover unit are connected to the axial clamping base unit and the radial clamping base unit by screws; the axial clamping base unit and the radial clamping base unit are connected to each other and installed on the base mounting plate 1 to achieve simultaneous clamping of axial and radial vehicle-mounted electrical connectors; the wire trough plate 15 is installed on the base mounting plate 1, and the collection pipe 14 is connected to the center thread of the wire trough plate 15.

[0029] Specifically, the axial clamping top cover unit includes a first axial clamping top cover 2, a second axial clamping top cover 3, a third axial clamping top cover 6 and a fourth axial clamping top cover 7; the radial clamping top cover unit includes a first radial clamping top cover 4, a second radial clamping top cover 5, a third radial clamping top cover 8 and a fourth radial clamping top cover 9; each clamping top cover has through holes at its four corners and is connected to the clamping base by screws, and each clamping top cover is separated from each other, thereby achieving the effect of independent clamping of the vehicle-mounted electrical connector and avoiding the individual differences of the vehicle-mounted electrical connector from affecting the overall vibration test.

[0030] The axial clamping base unit includes a first axial clamping base 10 and a second axial clamping base 12, and the radial clamping base unit includes a first radial clamping base 11 and a second radial clamping base 13; the axial clamping base unit and the radial clamping base unit are fixed to each other by bolts and nuts, so as to simultaneously clamp the axial and radial on-board electrical connectors, thereby achieving the effect of simultaneously conducting axial and radial vibration tests of the on-board electrical connectors.

[0031] The utility model matches four axial clamping top covers and four radial clamping top covers with four axial clamping bases and radial clamping bases respectively and installs them together on a base mounting plate 1 to perform a vibration test of a vehicle-mounted electrical connector.

[0032] Both the axial and radial clamping base units are equipped with semicircular grooves, consisting of a plug groove 22 and a socket groove 23. The plug groove 22 and socket groove 23 are coaxial, with the socket groove 23 having a larger radius than the plug groove 22. A groove 21 is provided at the outer end of the plug groove 22 to prevent the protrusion at the rear of the vehicle electrical connector plug from contacting the clamping base and affecting test results. The socket groove 23 can engage the vehicle electrical connector socket, limiting its axial, radial, and rotational movement.

[0033] The upper surface of the wire trough plate 15 is provided with a wire trough 34. The wire collection pipe 14 is connected to the center of the wire trough plate 15 by screw thread and is installed together in the middle of the base mounting plate 1. The upper surface of the wire trough plate 15 is kept level with the protrusion at the tail of the vehicle electrical connector plug, ensuring that the wires enter the wire trough plate 15 in a naturally straight state. The vehicle electrical connector wires are fixed in the wire trough 34 by applying epoxy resin (see attached). Figure 6 A), and finally gathered at the center of the wire trough plate and entered the gap at the lower end of the collection tube to achieve the purpose of collecting and leading the wires through the collection tube 14, thereby reducing the influence of the wire swing on the vibration test.

[0034] The vehicle-mounted electrical connector wires are collected and led out from the collection tube 14 and connected to the external online detection circuit of the device. The detection circuit is designed using the four-wire method: the two wires led out from the vehicle-mounted electrical connector plug are connected to an external controlled current source 18 and an ammeter 19, which are used to provide voltage and measure the current passing through the internal contact resistance of the plug. They are then connected to the acquisition card 17 and uploaded to the host computer 16 to collect the change data of the voltage across the resistor in real time, thereby calculating the change of the internal contact resistance of the plug under different vibration conditions.

[0035] like Figure 8 As shown, the contact resistance is the total resistance of the first contact point 30, the second contact point 31, the welding point 29, the first pressing point 32, and the second pressing point 33 inside the plug and the socket. It is a key performance indicator for characterizing the electrical connector. During the vibration process, since the contact state of the vehicle-mounted electrical connector changes, real-time online monitoring of the contact resistance response under different random vibration PSD spectra can provide more data support for the performance evaluation of the vehicle-mounted electrical connector.

[0036] Based on the above device, the embodiment of the present application also provides experimental steps for the vibration experiment, such as Figure 7 As shown, including:

[0037] S1: Equipment installation: Align the four corner through holes of the base mounting plate 1 with the four round holes on the vibration test bench and fix them together; place the four clamping bases in sequence on the base mounting plate and connect them together with bolts and nuts; fix the wire trough plate 15 in the middle of the base mounting plate 1, in the middle of the four clamping bases; screw the collection pipe 14 to the central threaded hole of the wire trough plate 15; place the vehicle-mounted electrical connector on the clamping part of the clamping base and align the protrusion of the vehicle-mounted electrical connector plug with the wire trough on the wire trough plate 15; fix the clamping top cover tightly to the clamping base with screws and press the vehicle-mounted electrical connector; place the vehicle-mounted electrical connector wires into the wire trough 34 and fix them with deoxidized resin; pass the vehicle-mounted electrical connector wires through the notch at the lower end of the collection pipe 14 to gather them into one strand and lead them out; connect the led-out wires to the external detection circuit using the four-wire method.

[0038] S2: Equipment calibration: Shake the electrical connector plug and judge whether it is clamped tightly by the swing amplitude of the plug; slightly swing the collected wires to observe whether the wires at the tail of the vehicle electrical connector plug swing. If so, the wires need to be re-fixed in the wire groove 34.

[0039] S3: Start the experiment: Input the road condition signal into the vibration test bench, turn on the power supply of the external detection circuit to provide stable voltage and current, turn on the vibration test bench switch to start the test, and obtain the voltage and current change image through the external detection circuit.

[0040] S4: Data analysis: Perform data analysis on the voltage and current change images to obtain the change images of the contact resistance between the vehicle electrical connector plug and socket, compare them with the road vibration signal to obtain the test results, and analyze the performance of the vehicle electrical connector.

Claims

1. A vibration test clamping device for a vehicle-mounted electrical connector, characterized in that: It comprises a base mounting plate (1), an axial clamping top cover unit, a radial clamping top cover unit, an axial clamping base unit, a radial clamping base unit, a line collection pipe (14) and a line trough plate (15); The axial clamping top cover unit and the radial clamping top cover unit are connected to the axial clamping base unit and the radial clamping base unit via screws; the axial clamping base unit and the radial clamping base unit are connected to each other and mounted on the base mounting plate (1) to achieve simultaneous clamping of axial and radial vehicle-mounted electrical connectors; the wire trough plate (15) is mounted on the base mounting plate (1), and the collection pipe (14) is threadedly connected to the center of the wire trough plate (15).

2. The vibration test clamping device for an on-vehicle electrical connector according to claim 1, characterized in that: The axial clamping top cover unit comprises a first axial clamping top cover (2), a second axial clamping top cover (3), a third axial clamping top cover (6) and a fourth axial clamping top cover (7); the radial clamping top cover unit comprises a first radial clamping top cover (4), a second radial clamping top cover (5), a third radial clamping top cover (8) and a fourth radial clamping top cover (9); and the clamping top covers are separated from each other.

3. The vibration test clamping device for a vehicle-mounted electrical connector according to claim 2, characterized in that: The axial clamping base unit comprises a first axial clamping base (10) and a second axial clamping base (12), and the radial clamping base unit comprises a first radial clamping base (11) and a second radial clamping base (13); the axial clamping base unit and the radial clamping base unit are fixed to each other by bolts and nuts.

4. The vibration test clamping device for an on-vehicle electrical connector according to claim 3, characterized in that: The axial clamping base unit and the radial clamping base unit are both provided with a semicircular groove, the semicircular groove consisting of a plug circular groove (22) and a socket circular groove (23), the plug circular groove (22) and the socket circular groove (23) are coaxial, the radius of the socket circular groove (23) is larger than the radius of the plug circular groove (22), and the outer end of the plug circular groove (22) is provided with a groove (21).

5. The vibration test clamping device for an on-vehicle electrical connector according to claim 4, characterized in that: A wire groove (34) is formed on the upper surface of the wire groove plate (15); the electric wires of the vehicle-mounted electrical connector are fixed in the wire groove (34) and gathered at the center of the wire groove plate (15) to enter the collection pipe (14).

6. The vibration test clamping device for an on-vehicle electrical connector according to claim 5, characterized in that: The electric wires of the vehicle-mounted electric connector are gathered and drawn out from the collection pipe (14) and connected to the host computer (16), the acquisition card (17), the controlled current source (18) and the ammeter (19).

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