Automobile PDU controller leak detection tool clamp

Abstract

The utility model discloses an automobile PDU controller leak hunting work fixture, relates to the technical field of fixtures, and solves the problems that the contact surface of a fixture and the surface of an automobile PDU controller is large, when cracks exist on the contact surface of the controller and the fixture, the controller is difficult to generate bubbles in water due to the coverage of the fixture, and the leakage of the automobile PDU controller is influenced. The device comprises an upper clamping plate installed on the upper side of the PDU controller and a lower clamping plate installed on the lower side of the PDU controller, and a rectangular through hole is formed in the position, corresponding to the PDU controller, of the lower clamping plate; according to the utility model, the contact area between the clamp and the PDU controller can be effectively reduced by installing the plurality of positioning rods and the plurality of extrusion structures, so that the clamp tool is effectively prevented from influencing the accuracy of the leakage detection of the PDU controller, and by installing the speed reduction assembly, the upper clamping plate is prevented from bouncing off and falling off under the compression elastic force of the spring when the upper clamping plate is dismounted, and the reliability of the leakage detection of the PDU controller is improved. Therefore, the upper clamping plate is relatively gentle and stable to disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of fixtures, in particular to a leak detection fixture for an automobile PDU controller. Background Art

[0002] The automotive PDU controller is responsible for the power distribution and management in the high-voltage system of new energy vehicles, providing the entire vehicle with functions such as charge and discharge control, power-on control of high-voltage components, circuit overload and short-circuit protection, high-voltage sampling, and low-voltage control, protecting and monitoring the operation of the high-voltage system. After processing, the automotive PDU controller needs to be tested for leaks.

[0003] In the process of leak testing of existing automobile PDU controllers, the automobile PDU controller is positioned by a fixture, the fixture is immersed in water, and air is inflated into the automobile PDU controller to observe whether bubbles are generated in the water, so as to detect the sealing of the automobile PDU controller. However, when the traditional fixture clamps the automobile PDU controller, the contact surface with the automobile PDU controller is large. When there are cracks on the contact surface between the controller and the fixture, it is difficult for the controller to generate bubbles in the water due to the coverage of the fixture, thus affecting the accuracy of the controller leak test. Utility Model Content

[0004] The utility model aims to provide a leak detection fixture for an automobile PDU controller which can prevent the accuracy of the leak detection of the controller from being affected, and can solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a leak detection fixture for an automobile PDU controller, comprising an upper clamping plate installed on the upper side of the PDU controller and a lower clamping plate installed on the lower side of the PDU controller, and a rectangular opening is opened on the lower clamping plate corresponding to the PDU controller, pins are fixedly installed at the four corners of the lower end of the upper clamping plate, and sleeves are fixedly installed at the four corners of the upper end of the lower clamping plate, and the connection method between the pins and the sleeves is a plug-in connection, and the upper end of the lower clamping plate is located on the outside of the PDU controller and is fixedly embedded with a plurality of positioning rods; a connecting structure is used to connect and lock the upper clamping plate and the lower clamping plate, four of the connecting structures are installed between the upper clamping plate and the lower clamping plate, and are located on the outside of the PDU controller; an extrusion structure is used to cooperate with the lower clamping plate to clamp the PDU controller, and multiple extrusion structures are installed on the upper end of the PDU controller; a deceleration component is used to decelerate the reset movement of the extrusion structure, and the deceleration component is installed inside the extrusion structure.

[0006] Preferably, a fixing plate is fixedly mounted on the lower side of the upper clamping plate located on the upper side of the PDU controller, and the extrusion structure includes an embedded rod fixedly connected to the fixing plate, and the cross-sectional shape of the embedded rod is circular.

[0007] Preferably, the lower end of the embedded rod is fixedly sleeved with an anti-slip block, the outer side of the anti-slip block is movably sleeved with an outer sleeve, the lower end of the outer sleeve is fixedly embedded with a pressure rod, and the lower end surface of the pressure rod is in contact with the PDU controller.

[0008] Preferably, a spring is movably sleeved on the outer side of the embedded rod, and two ends of the spring are movably abutted against the fixing plate and the outer sleeve respectively, and the spring can drive the outer sleeve to move downward.

[0009] Preferably, the connection structure comprises a long connecting rod fixedly connected to the upper clamping plate, and a threaded joint is fixedly connected to the lower end of the long connecting rod.

[0010] Preferably, the lower end of the threaded joint is movably abutted against a short connecting rod, and the connection between the short connecting rod and the lower clamping plate is a fixed connection, and the outer side of the short connecting rod is movably sleeved with a threaded sleeve, and the threaded sleeve can move up and down on the outer side of the short connecting rod.

[0011] Preferably, the threaded sleeve and the threaded joint are connected by threaded connection, and a retaining ring is fixedly sleeved on the outer side of the short connecting rod near its upper end, and the retaining ring can prevent the threaded sleeve from detaching from the short connecting rod.

[0012] Preferably, the deceleration assembly includes a silicone cam movably embedded in the outer side of the anti-slip block, the silicone cam is connected to the inner wall of the outer sleeve in a movable contact manner, and the friction between the silicone cam and the inner wall of the outer sleeve is relatively large.

[0013] Preferably, a rotating shaft is fixedly embedded inside the silicone cam, a limiting rotating groove is provided at the place where the anti-slip block is installed on the silicone cam, and the silicone cam is rotatably connected to the anti-slip block through the rotating shaft and the limiting rotating groove, and the anti-slip block can prevent the embedded rod from detaching from the outer sleeve.

[0014] Preferably, a coil spring is fixedly sleeved on the outer side of the rotating shaft, the coil spring can drive the silicone cam to rotate, and the outer end of the coil spring is fixedly connected to the anti-slip block.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model installs multiple positioning rods and multiple extrusion structures. The pressure rods in the multiple extrusion structures perform point pressure on the PDU controller, which is conducive to the clamping of the PDU controller by the fixture. At the same time, it can effectively reduce the contact area between the fixture and the PDU controller, thereby effectively avoiding the fixture from affecting the accuracy of the leakage detection of the PDU controller.

[0017] 2. The utility model installs a deceleration component, and the silicone cam in the deceleration component fits with the inner wall of the outer sleeve, which is beneficial to prevent the upper splint from bouncing off and falling under the compression force of the spring when removing the upper splint, making the removal of the upper splint smoother and more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the disassembly of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection between the extrusion structure and the fixed plate of the utility model;

[0021] Figure 4 This is an overall schematic diagram of the extrusion structure of the utility model;

[0022] Figure 5 It is a side sectional schematic diagram of the extrusion structure of the utility model;

[0023] Figure 6 For this utility model Figure 5 A is an enlarged schematic diagram.

[0024] In the figure: 1. upper clamping plate; 2. lower clamping plate; 3. pin rod; 4. sleeve; 5. connection structure; 501. long connecting rod; 502. threaded joint; 503. short connecting rod; 504. threaded sleeve; 505. retaining ring; 6. fixing plate; 7. extrusion structure; 701. embedded rod; 702. anti-slip block; 703. outer sleeve; 704. pressure rod; 705. spring; 8. deceleration assembly; 801. silicone cam; 802. rotating shaft; 803. coil spring; 804. limit rotating groove; 9. positioning rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] See also Figure 1 , Figure 2 , Figure 3, the figure shows a leak detection fixture for an automobile PDU controller, comprising an upper clamping plate 1 installed on the upper side of the PDU controller and a lower clamping plate 2 installed on the lower side of the PDU controller, and a rectangular opening is opened on the lower clamping plate 2 corresponding to the PDU controller, pins 3 are fixedly installed at the four corners of the lower end of the upper clamping plate 1, and sleeves 4 are fixedly installed at the four corners of the upper end of the lower clamping plate 2, and the connection method between the pins 3 and the sleeves 4 is a plug-in connection, and the upper end of the lower clamping plate 2 is located on the outer side of the PDU controller and is fixedly embedded with multiple positioning rods 9; a connecting structure 5 is used to connect and lock the upper clamping plate 1 and the lower clamping plate 2, and four connecting structures 5 are installed between the upper clamping plate 1 and the lower clamping plate 2, and are located on the outer side of the PDU controller; an extrusion structure 7 is used to cooperate with the lower clamping plate 2 to clamp the PDU controller, and multiple extrusion structures 7 are installed at the upper end of the PDU controller; a deceleration component 8 is used to decelerate the reset movement of the extrusion structure 7, and the deceleration component 8 is installed inside the extrusion structure 7.

[0028] See also Figure 3 , Figure 5 The lower side of the upper clamping plate 1 is located on the upper side of the PDU controller and is fixedly installed with a fixing plate 6. The extrusion structure 7 includes an embedded rod 701 fixedly connected to the fixing plate 6. The cross-sectional shape of the embedded rod 701 is circular. The lower end of the embedded rod 701 is fixedly sleeved with an anti-slip block 702, and the outer side of the anti-slip block 702 is movably sleeved with an outer sleeve 703. The lower end of the outer sleeve 703 is fixedly embedded with a pressure rod 704, and the lower end surface of the pressure rod 704 is in contact with the PDU controller.

[0029] See also Figure 4 A spring 705 is movably sleeved on the outer side of the embedded rod 701, and the two ends of the spring 705 are movably abutted against the fixed plate 6 and the outer sleeve 703 respectively, and the spring 705 can drive the outer sleeve 703 to move downward.

[0030] The working principle of preventing the controller from being affected is as follows: after the PDU controller is embedded in the lower clamp plate 2, the positioning rod 9 on the lower clamp plate 2 positions the PDU controller, and then the upper clamp plate 1 and the lower clamp plate 2 are assembled. After the upper clamp plate 1 and the lower clamp plate 2 are assembled, a plurality of pressure rods 704 are driven by the compression force of the spring 705 to fit tightly with the upper end surface of the PDU controller to clamp the PDU controller. The plurality of pressure rods 704 perform point pressure on the PDU controller, which can effectively reduce the contact area between the fixture and the PDU controller, thereby effectively preventing the fixture from affecting the accuracy of the PDU controller leak test.

[0031] Embodiment 2

[0032] See also Figure 5 , Figure 6This embodiment further explains Example 1. The deceleration component 8 includes a silicone cam 801 movably embedded in the outer side of the anti-slip block 702. The connection between the silicone cam 801 and the inner wall of the outer sleeve 703 is a movable contact, and the friction between the silicone cam 801 and the inner wall of the outer sleeve 703 is relatively large.

[0033] See also Figure 6 A rotating shaft 802 is fixedly embedded inside the silicone cam 801, and a limited rotation groove 804 is provided at the place where the anti-slip block 702 is installed with the silicone cam 801, and the silicone cam 801 is rotatably connected to the anti-slip block 702 through the rotating shaft 802 and the limited rotation groove 804. The anti-slip block 702 can prevent the embedded rod 701 from separating from the outer sleeve 703, and a coil spring 803 is fixedly sleeved on the outer side of the rotating shaft 802. The coil spring 803 can drive the silicone cam 801 to rotate, and the outer end of the coil spring 803 is fixedly connected to the anti-slip block 702.

[0034] In this embodiment: when the pressure rod 704 is pressed on the PDU controller, the embedded rod 701 and the anti-slip block 702 will move downward inside the outer sleeve 703, and the silicone cam 801 will rotate under the drive of the inner wall of the outer sleeve 703. When the upper clamp 1 is removed, the anti-slip block 702 will move upward inside the outer sleeve 703 under the drive of the compression elastic force of the spring 705. During the upward movement of the anti-slip block 702, the silicone cam 801 is blocked by the restricted rotation groove 804 and cannot rotate, resulting in the silicone cam 801 directly contacting and rubbing with the inner wall of the outer sleeve 703, thereby effectively reducing the upward movement speed of the anti-slip block 702 inside the outer sleeve 703, avoiding the upper clamp 1 from bouncing open under the drive of the compression elastic force of multiple springs 705 when the upper clamp 1 is removed, making the removal of the upper clamp 1 smoother and more stable.

[0035] Embodiment 3

[0036] See also Figure 2 , this embodiment further explains other embodiments, the connection structure 5 includes a long connecting rod 501 fixedly connected to the upper clamping plate 1, the lower end of the long connecting rod 501 is fixedly connected with a threaded joint 502, the lower end of the threaded joint 502 is movably abutted with a short connecting rod 503, and the connection method between the short connecting rod 503 and the lower clamping plate 2 is a fixed connection, the outer side of the short connecting rod 503 is movably sleeved with a threaded sleeve 504, the threaded sleeve 504 can move up and down on the outer side of the short connecting rod 503, the connection method between the threaded sleeve 504 and the threaded joint 502 is a threaded connection, and the outer side of the short connecting rod 503 is fixedly sleeved with a retaining ring 505 near its upper end, and the retaining ring 505 can prevent the threaded sleeve 504 from separating from the short connecting rod 503.

[0037] In this embodiment: when assembling the upper splint 1 and the lower splint 2, the personnel insert the pin rods 3 at the four corners of the upper splint 1 into the sleeves 4 at the four corners of the lower splint 2. After the long connecting rod 501 and the short connecting rod 503 are abutted, the personnel rotate the threaded sleeve 504 and sleeve it on the threaded joint 502, so that the long connecting rod 501 and the short connecting rod 503 are connected, which is conducive to the connection and assembly of the upper splint 1 and the lower splint 2.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include"-"comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process-method-article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process-method-article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leak detection fixture for an automobile PDU controller, characterized in that: include: An upper clamping plate (1) is installed on the upper side of the PDU controller and a lower clamping plate (2) is installed on the lower side of the PDU controller, and a rectangular opening is opened on the lower clamping plate (2) corresponding to the PDU controller, pins (3) are fixedly installed at the four corners of the lower end of the upper clamping plate (1), and a socket (4) is fixedly installed at the four corners of the upper end of the lower clamping plate (2), and the connection between the pins (3) and the socket (4) is a plug-in connection, and the upper end of the lower clamping plate (2) is located on the outer side of the PDU controller and is fixedly embedded with a plurality of positioning rods (9); A connecting structure (5) for connecting and locking the upper clamping plate (1) and the lower clamping plate (2), wherein four connecting structures (5) are installed between the upper clamping plate (1) and the lower clamping plate (2) and are located outside the PDU controller; An extrusion structure (7) is used to cooperate with the lower clamping plate (2) to clamp the PDU controller, and a plurality of the extrusion structures (7) are installed on the upper end of the PDU controller; A deceleration component (8) is used to decelerate the resetting movement of the extrusion structure (7), and the deceleration component (8) is installed inside the extrusion structure (7).

2. The leak detection fixture for automobile PDU controller according to claim 1 is characterized in that: A fixing plate (6) is fixedly mounted on the lower side of the upper clamping plate (1) located on the upper side of the PDU controller, and the extrusion structure (7) includes an embedded rod (701) fixedly connected to the fixing plate (6).

3. The leak detection fixture for automobile PDU controller according to claim 2 is characterized in that: The lower end of the embedded rod (701) is fixedly sleeved with an anti-slip block (702), the outer side of the anti-slip block (702) is movably sleeved with an outer sleeve (703), and the lower end of the outer sleeve (703) is fixedly embedded with a pressure rod (704).

4. The leak detection fixture for automobile PDU controller according to claim 3 is characterized in that: A spring (705) is movably sleeved on the outer side of the embedded rod (701), and two ends of the spring (705) are movably abutted against the fixing plate (6) and the outer sleeve (703) respectively.

5. The leak detection fixture for automobile PDU controller according to claim 1 is characterized in that: The connection structure (5) comprises a long connecting rod (501) fixedly connected to the upper clamping plate (1), and a threaded joint (502) is fixedly connected to the lower end of the long connecting rod (501).

6. The leak detection fixture for automobile PDU controller according to claim 5 is characterized in that: The lower end of the threaded joint (502) is movably connected to a short connecting rod (503), and the connection between the short connecting rod (503) and the lower clamping plate (2) is a fixed connection. The outer side of the short connecting rod (503) is movably sleeved with a threaded sleeve (504).

7. The leak detection fixture for automobile PDU controller according to claim 6 is characterized by: The threaded sleeve (504) and the threaded joint (502) are connected in a threaded manner, and a retaining ring (505) is fixedly sleeved on the outer side of the short connecting rod (503) near its upper end.

8. The leak detection fixture for automobile PDU controller according to claim 3 is characterized by: The deceleration component (8) comprises a silicone cam (801) movably embedded on the outside of the anti-slip block (702), and the connection between the silicone cam (801) and the inner wall of the outer sleeve (703) is a movable contact.

9. The leak detection fixture for automobile PDU controller according to claim 8, characterized in that: A rotating shaft (802) is fixedly embedded inside the silicone cam (801), a limited rotation groove (804) is provided at the location where the anti-slip block (702) is mounted on the silicone cam (801), and the silicone cam (801) is rotatably connected to the anti-slip block (702) via the rotating shaft (802) and the limited rotation groove (804).

10. The leak detection fixture for automobile PDU controller according to claim 9, characterized in that: A coil spring (803) is fixedly sleeved on the outer side of the rotating shaft (802), and the outer end of the coil spring (803) is fixedly connected to the anti-slip block (702).

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