DCU test fixture with heat dissipation effect based on one-to-four architecture and use method thereof

Abstract

The invention relates to the technical field of DCU test fixtures, in particular to a DCU test fixture with a heat dissipation effect based on a one-to-four framework and a use method thereof.The DCU test fixture comprises a circular bracket, a detection circular truncated cone is fixedly connected to the top end of the circular bracket, a connector used for testing a test piece is installed in the middle of the detection circular truncated cone, and guide units are installed on the periphery of the connector; a clamping unit is mounted in the detection circular table; the connector comprises a detection module used for being connected with the test piece, and the bottom end of the detection module is fixedly connected with an air blowing module through a connecting block. Air cooling directly acts on the interior of a cooling liquid pipeline arranged in the test piece, and the air cooling is flowable, so that the heat dissipation effect of the test piece can be further improved; and in the mounting process of the test piece, the air inlet mechanism and the air exhaust mechanism are firstly connected with a pipeline arranged on the test piece, so that the accuracy of plug connection between the detection module and the test piece can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of DCU test fixtures, and particularly to a DCU test fixture with a heat dissipation effect based on a one - to - four architecture and its usage method. Background Art

[0002] A DCU test fixture with a one - to - four architecture is a device used to simultaneously test multiple automotive drive control units (DCUs). It connects and manages four test stations through a main control unit, and can efficiently complete multiple functions such as power supply testing, communication testing, wake - up and sleep testing, high - and - low - side drive testing, etc. This architecture improves the test efficiency, reduces the test cost, and enhances the stability and repeatability of the test through automated control and multi - station design;

[0003] During the testing process of automotive drive control units, the internal heat is relatively high, and it is necessary to dissipate heat from the automotive drive control units to ensure the stability during the testing process of the automotive drive control units;

[0004] Existing test fixtures that dissipate heat by externally installing cooling fans cannot directly act on the internal heat dissipation pipes of the automotive drive control units during the testing process, resulting in poor heat dissipation effects. If the environment of the air around the test fixture is reduced to ensure heat dissipation during the testing process of the automotive drive control units, the cost is relatively high. Therefore, a DCU test fixture with a heat dissipation effect based on a one - to - four architecture and its usage method are proposed for the above - mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a DCU test fixture with a heat dissipation effect based on a one - to - four architecture and its usage method, so as to solve the problems of existing test fixtures that dissipate heat by externally installing cooling fans. During the testing process, the heat dissipation effect cannot directly act on the internal heat dissipation pipes of the automotive drive control units, resulting in poor heat dissipation effects. If the environment of the air around the test fixture is reduced to ensure heat dissipation during the testing process of the automotive drive control units, the cost is relatively high.

[0006] To achieve the above - mentioned purpose, the present invention provides the following technical solutions:

[0007] DCU Test Fixture with Heat Dissipation Effect Based on a One-Drag-Four Architecture and Its Usage Method, including a circular bracket, a detection turntable is fixedly connected to the top of the circular bracket, a connector for testing a test piece is installed in the middle of the detection turntable, guiding units are installed around the connector, and a clamping unit is installed inside the detection turntable; the connector includes a detection module for connecting with the test piece, a blowing module is fixedly connected to the bottom end of the detection module through a connecting block, bending holes are opened at both ends of any side surface of the detection module, and an air inlet mechanism and an air exhaust mechanism are respectively installed inside the bending holes on any side surface; the air inlet mechanism and the air exhaust mechanism have the same structure, the bottom end of the air inlet mechanism is fixedly connected to the air outlet of the blowing module, and there is a distance between the bottom end of the air exhaust mechanism and the upper end of the blowing module; the air inlet mechanism includes a bent pipe, a moving pipe is slidably connected to the outer side of the upper end of the bent pipe, a ring plate is fixedly connected to the outer side of one end of the moving pipe, and a return spring is fixedly connected to one end of the ring plate.

[0008] As a further optimized content of the present invention, wherein: the detection turntable includes a circular plate, an installation groove for installing the connector is opened in the middle of the circular plate, and sliding grooves for positioning the clamping unit are opened on the inner sides of the four circumferences of the circular plate.

[0009] As a further optimized content of the present invention, wherein: cooling pipes are provided on the lower side of the connection end of the test piece and the detection module, there are two cooling pipes, which are respectively a coolant inlet pipe and a coolant drain pipe, and the coolant inlet pipe and the coolant drain pipe respectively correspond to the air inlet mechanism and the air exhaust mechanism provided on any side surface of the connector.

[0010] As a further optimized content of the present invention, wherein: the guiding unit includes a guiding bent plate, one end of the guiding bent plate is fixedly connected to a positioning frame, the positioning frame is U-shaped, positioning rollers are rotatably connected to both ends and the inner side of the upper side of the positioning frame, and both ends of the positioning frame are fixedly connected to the circular plate through bolts.

[0011] As a further optimized content of the present invention, wherein: the clamping unit includes clamping claws, the clamping claws are fixedly connected to the bottom shell through through holes, tooth grooves are opened at the ends of the clamping claws close to the bottom shell, there are multiple clamping claws, the clamping claws are integrally distributed in a cross-shaped and staggered manner, the clamping claws are meshed with a gear through the tooth grooves, the bottom end of the gear is fixedly connected to the main shaft of a driving motor, the bottom of the driving motor housing is fixedly connected to the bottom shell, and the upper end of the bottom shell is fixedly connected to the circular plate.

[0012] As a further optimized content of the present invention, wherein: the circular bracket, the detection turntable and the bottom shell are coaxially arranged, and positioning holes for positioning are annularly opened on the inner side of the bottom end of the circular bracket.

[0013] As a further optimized content of the present invention, wherein: there are four guiding units, and there are two guiding bent plates provided inside any one of the guiding units, and the test piece is placed at the position between the guiding bent plates.

[0014] As a further optimized content of the present invention, wherein: the bent pipe is fixedly connected inside the detection module, the return spring is arranged outside the upper end of the bent pipe, and the end of the return spring away from the ring plate is fixedly connected to the detection module.

[0015] As a further optimized content of the present invention, wherein: the clamping claw is integrally L-shaped, there is a bend at the upper end of the clamping claw, and the clamping claw is slidably connected to the circular plate through a chute.

[0016] As a further optimized content of the present invention, it includes the following steps:

[0017] Step Ⅰ: Placement of the test piece: Place the test piece to be tested inside the guiding unit. During the placement process, the test piece insertion interface is placed on the side close to the detection module;

[0018] Step Ⅱ: Connection between the test piece and the detection module: The whole device is powered on, and the driving motor is controlled to drive the gear to rotate. During the rotation of the gear, the clamping claw is driven to clamp the test piece;

[0019] At this time, the test piece is connected to the detection module through the guiding bent plate and the positioning frame. During the connection process, the cooling pipes arranged at the lower end of the test piece are respectively connected to the air inlet mechanism and the air exhaust mechanism, and at the same time, the return spring is compressed;

[0020] Step Ⅲ: Cooling and heat dissipation by the air blowing module: The air blowing module blows cold air into the cooling pipe of the test piece, and the cold air is discharged from the air exhaust mechanism to dissipate heat from the test piece during the detection process;

[0021] Step Ⅳ: Remove the test piece after the test is completed: After the detection is completed, control the driving motor to drive the gear to rotate, so that the clamping claw no longer clamps the test piece. At this time, the return spring starts to reset, automatically separating the test piece connected to the detection module from the detection module. The staff removes the test piece after the detection is completed to complete the test.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. In the present invention, through the provided connector, the air cooling directly acts on the coolant pipe arranged inside the test piece, and the air cooling is fluid, which can further improve the heat dissipation effect of the test piece. Moreover, during the installation of the test piece, by first connecting the air inlet mechanism and the air exhaust mechanism to the pipes arranged on the test piece, the accuracy of the plug connection between the detection module and the test piece can be improved;

[0024] 2. In the present invention, by providing a reset spring, after the test piece is tested and the clamping unit releases the clamping, the detection module and the test piece can be automatically separated, facilitating the staff to remove the tested test piece, effectively improving the test efficiency.

[0025] 3. In the present invention, by providing a clamping unit and a guiding unit, during the testing of the test piece, the test piece can be directly placed on the detection turntable, and then the test piece can be automatically and synchronously stably connected to the detection module. The guiding unit has a good guiding and adjusting effect during this process, which can improve the convenience of installing the test piece during the testing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is a schematic diagram of the structure of the detection turntable of the present invention;

[0028] Figure 3 is a schematic diagram of the structure of the connector of the present invention;

[0029] Figure 4 is a schematic diagram of the installation position structure of the air inlet mechanism of the present invention;

[0030] Figure 5 is a schematic diagram of the structure of the air inlet mechanism of the present invention;

[0031] Figure 6 is a schematic diagram of the structure of the clamping unit of the present invention;

[0032] Figure 7 is a schematic diagram of the installation position structure of the driving motor of the present invention.

[0033] In the figure: 1, circular bracket;

[0034] 2, detection turntable; 21, circular plate; 22, chute; 23, installation groove;

[0035] 3, test piece;

[0036] 4, guiding unit; 41, guiding bent plate; 42, positioning frame; 43, positioning roller;

[0037] 5, connector; 51, detection module; 52, air blowing module;

[0038] 53, air inlet mechanism; 531, elbow pipe; 532, reset spring; 533, ring plate; 534, moving pipe;

[0039] 54, exhaust mechanism; 55, connecting block; 56, bent hole;

[0040] 6. Clamping unit; 61. Clamping gripper; 62. Bottom shell; 63. Perforation; 64. Driving motor; 65. Gear; 66. Tooth groove. Detailed implementation manner

[0041] Please refer to Figure 1-7 , the present invention provides a technical solution:

[0042] A DCU test fixture with heat dissipation effect based on a one-drag-four architecture and its usage method, including a circular bracket 1, a detection turntable 2 is fixedly connected to the top of the circular bracket 1, a connector 5 for testing a test piece 3 is installed in the middle of the detection turntable 2, guiding units 4 are installed around the connector 5, and a clamping unit 6 is installed inside the detection turntable 2; the connector 5 includes a detection module 51 for connecting with the test piece 3, a blowing module 52 is fixedly connected to the bottom end of the detection module 51 through a connecting block 55, bending holes 56 are opened at both ends of any side surface of the detection module 51, and an air inlet mechanism 53 and an air exhaust mechanism 54 are respectively installed inside the bending holes 56 on any side surface; the air inlet mechanism 53 and the air exhaust mechanism 54 have the same structure, the bottom end of the air inlet mechanism 53 is fixedly connected to the air outlet of the blowing module 52, and there is a spacing between the bottom end of the air exhaust mechanism 54 and the upper end of the blowing module 52; the air inlet mechanism 53 includes a bent pipe 531, a moving pipe 534 is slidably connected to the outer side of the upper end of the bent pipe 531, a ring plate 533 is fixedly connected to the outer side of one end of the moving pipe 534, and a return spring 532 is fixedly connected to one end of the ring plate 533.

[0043] As a further implementation technical solution of this solution, the detection turntable 2 includes a circular plate 21, an installation groove 23 for installing the connector 5 is opened in the middle of the circular plate 21, and sliding grooves 22 for positioning the clamping unit 6 are opened on the inner sides of the four weeks of the circular plate 21. Through the above-mentioned detection turntable 2, stable limiting of the connector 5 and the clamping unit 6 can be carried out;

[0044] As a further implementation technical solution of this solution, cooling pipes are provided on the lower side of the connection end of the test piece 3 and the detection module 51. There are two cooling pipes, which are respectively a coolant inlet pipe and a coolant drain pipe. The coolant inlet pipe and the coolant drain pipe correspond to the air inlet mechanism 53 and the air exhaust mechanism 54 provided on any side surface of the connector 5 respectively. Through the above settings, during the testing of the test piece 3, heat dissipation can be assisted to prevent the problem of high-temperature damage of the test piece 3;

[0045] As a further technical solution for the implementation of this solution, the guiding unit 4 includes a guiding bent plate 41. One end of the guiding bent plate 41 is fixedly connected to the positioning frame 42. The positioning frame 42 is U-shaped. Positioning rollers 43 are rotatably connected to both ends and the inner side of the upper side of the positioning frame 42. Both ends of the positioning frame 42 are fixedly connected to the circular plate 21 by bolts. Through the above settings, during the process of clamping the test piece 3 by the clamping unit 6, the test piece 3 can be accurately docked with the detection module 51;

[0046] As a further technical solution for the implementation of this solution, the clamping unit 6 includes clamping claws 61. The clamping claws 61 are fixedly connected to the bottom shell 62 through perforations 63. Tooth grooves 66 are provided at one end of the clamping claws 61 close to the bottom shell 62. There are multiple clamping claws 61, and the clamping claws 61 are integrally distributed in a cross-shaped staggered manner. The clamping claws 61 are engaged with a gear 65 through the tooth grooves 66. The bottom end of the gear 65 is fixedly connected to the main shaft of a driving motor 64. The bottom of the outer shell of the driving motor 64 is fixedly connected to the bottom shell 62. The upper end of the bottom shell 62 is fixedly connected to the circular plate 21. Through the above settings, it is convenient to control the connection between the test piece 3 and the detection module 51;

[0047] As a further technical solution for the implementation of this solution, the circular bracket 1, the detection turntable 2, and the bottom shell 62 are coaxially arranged. A positioning hole for positioning is annularly provided on the inner side of the bottom end of the circular bracket 1. Through the above settings, the overall stability of the device during operation can be further improved;

[0048] As a further technical solution for the implementation of this solution, there are four guiding units 4. Each guiding unit 4 is provided with two guiding bent plates 41. The test piece 3 is placed at the position between the guiding bent plates 41. Through the above settings, the angle of the test piece 3 can be adjusted during the clamping process of the test piece 3;

[0049] As a further technical solution for the implementation of this solution, the bent pipe 531 is fixedly connected inside the detection module 51. A return spring 532 is arranged on the outer side of the upper end of the bent pipe 531. The end of the return spring 532 away from the ring plate 533 is fixedly connected to the detection module 51. Through the above settings, when the return spring 532 is reset, the test piece 3 can be separated from the detection module 51;

[0050] As a further technical solution for the implementation of this solution, the clamping claws 61 are integrally L-shaped. The upper end of the clamping claws 61 is provided with a bend. The clamping claws 61 are slidably connected to the circular plate 21 through a chute 22. Through the above settings, the stability of the connection between the detection module 51 and the test piece 3 during the test process can be further improved.

[0051] As a further technical solution for the implementation of this solution, it includes the following steps:

[0052] Step Ⅰ: Placement of test piece 3: Place the test piece 3 to be tested inside the guiding unit 4. During the placement process, the insertion interface of the test piece 3 is placed on the side close to the detection module 51;

[0053] Step Ⅱ: Connection between test piece 3 and detection module 51: Power on the entire device, and control the driving motor 64 to drive the gear 65 to rotate. During the rotation of the gear 65, drive the clamping gripper 61 to clamp the test piece 3;

[0054] At this time, the test piece 3 is connected to the detection module 51 through the guiding bent plate 41 and the positioning frame 42. During the connection process, the cooling pipes arranged at the lower end of the test piece 3 are respectively connected to the air inlet mechanism 53 and the air exhaust mechanism 54, and at the same time, the return spring 532 is compressed;

[0055] Step Ⅲ: Blowing air by the air blowing module 52 for heat dissipation: The air blowing module 52 blows cold air into the cooling pipes of the test piece 3, and the cold air is discharged from the inside of the air exhaust mechanism 54 to dissipate heat from the test piece 3 during the detection process;

[0056] Step Ⅳ: Remove the test piece 3 after the test is completed: After the detection is completed, control the driving motor 64 to drive the gear 65 to rotate, so that the clamping gripper 61 no longer clamps the test piece 3. At this time, the return spring 532 starts to reset, automatically separating the test piece 3 connected to the detection module 532 from the detection module 532. The staff removes the test piece 3 after the detection is completed to complete the test.

[0057] In this article, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above examples is only used to help understand the method and its core idea of the present invention. The above is only the preferred implementation manner of the present invention. It should be noted that due to the limitation of literal expression, and objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements, refinements or changes can also be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.

Claims

1. A DCU test fixture with heat dissipation effect based on a one-to-four architecture, comprising a circular bracket (1), characterized in that: The top of the circular bracket (1) is fixedly connected to a detection truncated table (2), a connector (5) for testing a test piece (3) is installed in the middle of the detection truncated table (2), guide units (4) are installed around the connector (5), and a clamping unit (6) is installed inside the detection truncated table (2); The connector (5) comprises a detection module (51) for connecting to the test piece (3); the bottom end of the detection module (51) is fixedly connected to a blower module (52) via a connection block (55); curved holes (56) are provided at both ends of any side surface of the detection module (51); and an air intake mechanism (53) and an air exhaust mechanism (54) are respectively installed inside the curved holes (56) on any side surface; The air inlet mechanism (53) and the air exhaust mechanism (54) have the same structure; the bottom end of the air inlet mechanism (53) is fixedly connected to the air outlet of the air blowing module (52); and a distance is provided between the bottom end of the air exhaust mechanism (54) and the upper end of the air blowing module (52); The air inlet mechanism (53) comprises a bent pipe (531), the upper end of the bent pipe (531) is slidably connected to a movable pipe (534) on the outer side, one end of the movable pipe (534) is fixedly connected to the outer side with a ring plate (533), and one end of the ring plate (533) is fixedly connected to a return spring (532).

2. The DCU test fixture with heat dissipation effect based on a one-to-four architecture according to claim 1 is characterized in that: The detection truncated table (2) comprises a circular plate (21), a mounting groove (23) for mounting a connector (5) is provided in the middle of the circular plate (21), and sliding grooves (22) for positioning a clamping unit (6) are provided on the inner sides of the four sides of the circular plate (21).

3. The DCU test fixture with heat dissipation effect based on a one-to-four architecture according to claim 1, characterized in that: A cooling pipe is provided at the lower side of the connection end between the test piece (3) and the detection module (51), and two cooling pipes are provided, which are a coolant inlet pipe and a coolant drain pipe, respectively. The coolant inlet pipe and the coolant drain pipe correspond one-to-one to the air inlet mechanism (53) and the air exhaust mechanism (54) provided on either side of the connector (5).

4. The DCU test fixture with heat dissipation effect based on a one-to-four architecture according to claim 1 is characterized in that: The guide unit (4) comprises a guide bent plate (41), one end of the guide bent plate (41) is fixedly connected to a positioning frame (42), the positioning frame (42) is U-shaped, both ends and the upper inner side of the positioning frame (42) are rotatably connected to positioning rollers (43), and both ends of the positioning frame (42) are fixedly connected to the circular plate (21) by bolts.

5. The DCU test fixture with heat dissipation effect based on a one-to-four architecture according to claim 1, characterized in that: The clamping unit (6) comprises a clamping grip (61), wherein the clamping grip (61) is fixedly connected to the bottom shell (62) via a through hole (63), and a tooth groove (66) is provided at one end of the clamping grip (61) close to the bottom shell (62). The clamping grip (61) is provided with a plurality of teeth, and the clamping grip (61) is staggeredly distributed in a cross shape as a whole. The clamping grip (61) is meshed with a gear (65) via the tooth groove (66), and the bottom end of the gear (65) is fixedly connected to the main shaft of the driving motor (64), the bottom of the housing of the driving motor (64) is fixedly connected to the bottom shell (62), and the upper end of the bottom shell (62) is fixedly connected to the circular plate (21).

6. The DCU test fixture with heat dissipation effect based on a one-to-four architecture according to claim 1, characterized in that: The circular bracket (1), the detection truncated table (2) and the bottom shell (62) are coaxially arranged, and a positioning hole for positioning is provided in the shape of a ring on the inner side of the bottom end of the circular bracket (1).

7. The DCU test fixture with heat dissipation effect based on a one-to-four architecture according to claim 1, characterized in that: There are four guide units (4), two guide curved plates (41) are arranged inside any one of the guide units (4), and the test piece (3) is placed between the guide curved plates (41).

8. The DCU test fixture with heat dissipation effect based on a one-to-four architecture according to claim 1, characterized in that: The bent pipe (531) is fixedly connected inside the detection module (51), the return spring (532) is arranged outside the upper end of the bent pipe (531), and one end of the return spring (532) away from the ring plate (533) is fixedly connected to the detection module (51).

9. The DCU test fixture with heat dissipation effect based on a one-to-four architecture according to claim 5, characterized in that: The clamping grip (61) is L-shaped as a whole, and a bend is provided at the upper end of the clamping grip (61). The clamping grip (61) is slidably connected to the circular plate (21) via a sliding groove (22).

10. A method for using the DCU test fixture with heat dissipation effect based on a one-to-four architecture according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step I: Placing the test piece (3): placing the test piece (3) to be tested inside the guide unit (4), and during the placement process, placing the test piece (3) plug-in interface close to the detection module (51); Step II: the test piece (3) is connected to the detection module (51): the whole device is powered on, and the driving motor (64) is controlled to drive the gear (65) to rotate. During the rotation process, the gear (65) drives the clamping gripper (61) to clamp the test piece (3); At this time, the test piece (3) is connected to the detection module (51) through the guide bent plate (41) and the positioning frame (42). During the connection process, the cooling pipe provided at the lower end of the test piece (3) is connected to the air inlet mechanism (53) and the air exhaust mechanism (54) respectively, and the reset spring (532) is compressed at the same time; Step III: the air blowing module (52) blows air to dissipate heat: the air blowing module (52) blows cold air into the cooling duct of the test piece (3), and the cold air is discharged from the exhaust mechanism (54) to dissipate heat from the test piece (3) during the testing process; Step IV: Remove the test piece (3) after the test is completed: After the test is completed, the driving motor (64) is controlled to drive the gear (65) to rotate, so that the clamping grip (61) no longer clamps the test piece (3). At this time, the reset spring (532) is reset, and the test piece (3) connected to the detection module (532) is automatically separated from the detection module (532). The staff removes the test piece (3) after the test is completed to complete the test.

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