A controller housing leak mechanism

Abstract

The utility model aims at providing a controller shell leak testing mechanism which has good sealing effect and can realize rapid positioning and compression for sealing test, the utility model discloses a support, set up in the middle part of support for placing the base of controller and set up the compression sealing assembly on the upper portion of support, the compression sealing assembly is equipped with the lower pressing plate that is tightly matched with the opening side of controller, the lower pressing plate forms the air channel that extracts the air in controller, the both sides of lower pressing plate all are provided with the compression groove, the front side of lower pressing plate forms the detection port that communicates with air channel, the middle part of support is fixedly connected with detection assembly and two groups of side compression assembly, every side compression assembly corresponds to set up in the side of base, and correspondingly and the compression groove of corresponding compression tight cooperation, detection assembly sets up in the front side of base, and detection assembly is equipped with the air pressure detection spare that is tightly matched with the detection air pressure change of detection port, the utility model discloses the technical field of shell leak testing mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shell leak mechanism, especially relates to a controller shell leak mechanism. BACKGROUND

[0002] With the development of electric vehicles, as the core component of pure electric vehicles, the safety of the controller gradually highlights, directly affecting the safety of the whole vehicle. The development of motor controller needs to fully consider many factors, needs to learn and absorb advanced technical experience at home and abroad, and repeatedly verifies and optimizes the design scheme. Therefore, the strength, stiffness, heat dissipation, waterproofness, insulation and other design requirements of the motor controller box are very high, so the design and sealing test of the motor controller are very important.

[0003] At present, the motor controller shell is mostly made of cast aluminum alloy, and the shell should have sealing effect after assembly. In the actual production process, the casting defects of the shell or other reasons make the shell have pores or cracks that cannot be sealed, and the sealing detection cannot be passed after the finished product assembly is completed, and only the disassembly and rework can be carried out. Such small pores or cracks cannot be checked through appearance inspection, which brings rework risk to assembly. The detection method adopted at present is that the opening on the controller is plugged with the corresponding plug, and then gas is introduced into the controller shell, manual detection needs to consume a lot of labor cost, and manual plugging of the controller is easy to form gap between the opening of the controller and the plug, which is difficult to find by naked eye and is not conducive to sealing detection. UTILITY MODEL CONTENTS

[0004] The utility model wants to overcome the insufficient of prior art, provide a controller shell leak mechanism that sealing effect is good, can realize quick positioning and compression and sealing test.

[0005] The utility model adopts the technical scheme: the utility model discloses a support, set up in the middle part of the support and use for placing the controller base and the compression sealing assembly of setting on the upper portion of the support, the compression sealing assembly is equipped with the lower pressure plate that is tightly matched with the opening side of the controller, the lower pressure plate forms the air channel that draws the air in the controller, the both sides of the lower pressure plate are provided with the compression groove, and the front side of the lower pressure plate forms the detection port that communicates with the air channel, and the detection assembly and two groups of side pressure assembly are fixedly connected in the middle part of the support, and each side pressure assembly is correspondingly set up in one side of the base, and is correspondingly matched with the compression groove, and the detection assembly is set up in the front side of the base, and the detection assembly is equipped with the air pressure detection piece that is tightly matched with the detection port and detects the air pressure change.

[0006] Further, the side pressing assembly comprises a side pressing fixing base, a side pressing driving device, a rotating frame, a pressing rotating block and a pressing block, the side pressing fixing base is fixedly connected with the support, the side pressing driving device is fixedly connected with the lower part of the side pressing fixing base, the rotating frame is fixedly connected with the movable end of the side pressing driving device, the middle part of the pressing rotating block is rotatably connected with the upper part of the side pressing fixing base through a rotating shaft, the first end of the pressing rotating block is slidably connected with the rotating frame, and the second end of the pressing rotating block is claspably connected with the pressing block.

[0007] Further, the upper part of the side pressing fixing base is provided with a guide piece which is guidedly matched with the rotating frame, and a slotted hole which is rotatably matched with the pressing rotating block, and the slotted hole is formed with a through hole which is matched with the rotating shaft.

[0008] Further, the pressing rotating block is in a "Z" shape, the pressing rotating block is formed with a waist-shaped groove for slidably connecting the rotating frame, and the other side of the pressing rotating block is formed with a positioning hole for claspably connecting the pressing block.

[0009] Further, the detection assembly comprises a detection driving device and a slide rail group which are fixedly connected with the support, a sliding frame which is slidably connected with the slide rail group, a sliding pressing block which is slidably connected with the upper part of the sliding frame and used for clamping and fixing the air pressure detection piece, and a detection adjusting piece which is arranged at the lower part of the sliding frame and used for driving the sliding pressing block to move up and down, the slide rail group is arranged at one side of the detection driving device, and the movable end of the detection driving device is fixedly connected with the sliding frame.

[0010] Further, the sliding pressing block is formed with an adjusting hole, the sliding frame is formed with a limiting block, the detection adjusting piece comprises an adjusting driving device and a transmission screw rod, the adjusting driving device is fixedly connected with the sliding frame, one end of the transmission screw rod is connected with the adjusting driving device through a coupling, the other end of the transmission screw rod is rotatably connected with the limiting block, and the transmission screw rod is threadedly matched with the adjusting hole.

[0011] Further, the top of the support is provided with a plurality of guide sleeves, the compression sealing assembly comprises a compression driving device, a mounting seat, a connecting plate and a plurality of floating pressing rods, the compression driving device is fixedly connected with the upper part of the support, the mounting seat is fixedly connected with the movable end of the compression driving device, the mounting seat is formed with a mounting groove and a plurality of first guide rods, each first guide rod is slidably matched with a corresponding guide sleeve, the connecting plate is slidably matched with the mounting groove, the connecting plate is fixedly connected with two groups of second guide rods which are slidably matched with the lower pressing plate, and a plurality of floating pressing rods are arranged between the connecting plate and the lower pressing plate, and the middle part of each floating pressing rod is provided with a buffer spring for absorbing the downward pressure.

[0012] Further, the floating pressing rod comprises a first pressing rod and a second pressing rod, the first pressing rod is fixedly connected with the connecting plate, the second pressing rod is fixedly connected with the lower pressing plate, the second pressing rod is formed with a guide rod in sliding fit with the first pressing rod, and the buffer spring is sleeved outside the guide rod and is in push fit with the first pressing rod.

[0013] Further, the contact surface between the lower pressing plate and the controller is formed with a sealing gasket, the sealing gasket is formed with a plurality of air holes, and the plurality of air holes are in communication with the air duct.

[0014] Further, the base is formed with a plurality of connecting holes for mounting positioning columns and pilot pins.

[0015] The utility model discloses the beneficial effect is: because the utility model discloses the compression sealing assembly adopts the way from top to bottom and extrudes the sealing gasket, makes it close to the controller shell, and the sealed space is formed between the lower pressing plate and the controller shell, after completing the preliminary compression, the side pressure assembly located at the both sides of base applies the downward compression force of the lower pressing plate to extrude the sealing gasket, and the sealing gasket deformation is greater area and close to the controller shell, effectively avoid the insufficient resilience of the buffer spring in the compression sealing assembly, and the sealing gasket deformation is too small to form the gap of inhaling external gas, and the air tightness detection is affected.

[0016] The air duct connected with the external vacuum generator extracts the gas in the controller shell, and the low-pressure space is formed between the controller shell and the sealing gasket of the lower pressing plate, the position of the air pressure detection piece is adjusted by the detection assembly, the air pressure detection piece is close to and attached to the detection port, the air duct is communicated, and the internal air pressure is detected, when the air pressure reaches the output value of the vacuum generator, the air tightness of the controller shell is good, the overall structure is simple, the positioning column and the pilot pin with the adjustable position of the positioning seat are matched, the controller shell can be quickly positioned and installed, the fixing operation is simplified, the manual intervention is reduced, and the working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structural schematic diagram of the utility model;

[0018] Figure 2 It is the explosion drawing of the compression sealing assembly of the utility model;

[0019] Figure 3 It is Figure 2 The local enlarged view of part A in it;

[0020] Figure 4 It is the connecting structure schematic diagram of the connecting plate and the lower pressing plate of the utility model;

[0021] Figure 5 It is the structural schematic diagram of the detection assembly of the utility model;

[0022] Figure 6 It isFigure 5 Partial enlarged view of middle B part;

[0023] Figure 7 Is the structure diagram of the side pressure assembly of the utility model;

[0024] Figure 8 Is the exploded view of the side pressure assembly of the utility model.

[0025] In the figure: 1, support; 11, guide sleeve; 2, base; 21, positioning column; 22, guide pin; 23, connecting hole; 3, compression sealing assembly; 31, compression driving device; 32, mounting seat; 33, connecting plate; 34, floating compression rod; 341, first compression rod; 342, second compression rod; 35, mounting groove; 36, first guide rod; 37, second guide rod; 38, buffer spring; 4, lower pressing plate; 41, air channel; 42, compression groove; 43, detection port; 44, sealing gasket; 5, detection assembly; 51, detection driving device; 52, slide rail group; 53, sliding frame; 531, limiting block; 54, sliding compression block; 55, detection adjusting piece; 551, adjusting driving device; 552, transmission screw; 553, coupling; 56, air pressure detection piece; 6, side pressure assembly; 61, side pressure fixing seat; 62, side pressure driving device; 63, rotating frame; 64, compression rotating block; 65, compression block; 66, rotating shaft. DETAILED DESCRIPTION

[0026] As Figures 1 to 8As shown, in the embodiment, the utility model includes support 1, set up in the middle part of support 1 base 2 for placing controller, and set up on the upper portion of support 1 compression sealing assembly 3, compression sealing assembly 3 is equipped with the lower pressing plate 4 that is tightly matched with the opening side of controller, the lower pressing plate 4 is formed with the air passage 41 of extracting the air in controller, the both sides of lower pressing plate 4 are provided with compression groove 42, the front side of lower pressing plate 4 is formed with detection port 43 that is communicated with air passage 41, detection assembly 5 and two groups of side pressure assembly 6 are fixedly connected in the middle part of support 1, each side pressure assembly 6 is correspondingly set up in one side of base 2, and is correspondingly tightly matched with the compression of corresponding compression groove 42, detection assembly 5 is set up in the front side of base 2, detection assembly 5 is equipped with the air pressure detection piece 56 that is tightly matched with the air pressure change of detection port 43, air pressure detection piece 56 is air pressure sensor, support 1 includes top plate in upper portion and support plate in middle part, compression sealing assembly 3 is set up on top plate, base 2, side pressure assembly 6 and detection assembly 5 are fixedly connected on support plate, compression sealing assembly 3 adopts the way from top to bottom and extrudes sealing gasket 44, makes it tightly matched with controller shell, lower pressing plate 4 and controller shell form sealed space between, after completing preliminary compression, the side pressure assembly 6 on both sides of base 2 applies downward compression force to lower pressing plate 4 and extrudes sealing gasket 44, sealing gasket 44 is deformed more and tightly matched with controller shell, effectively avoid the insufficient resilience of buffer spring 38 in compression sealing assembly 3, sealing gasket 44 is deformed too small and then forms the gap of inhaling external gas, influence air tightness detection, air passage 41 connected with external vacuum generator extracts the gas in controller, and the sealing gasket 44 between controller shell and lower pressing plate 4 forms low pressure space, detection assembly 5 adjusts the position of air pressure detection piece 56, so that air pressure detection piece 56 is close to and fits detection port 43, is communicated with air passage 41 and detects internal air pressure, when air pressure reaches the output value of vacuum generator, then the air tightness of controller shell is good, the whole structure is simple, and the positioning column 21 and guide pin 22 of adjustable position that are preset in cooperation with positioning seat can quickly position and install controller shell, simplify fixed operation, reduce manual intervention, improve work efficiency.

[0027] In the embodiment, the side pressure assembly 6 comprises a side pressure fixing seat 61, a side pressure driving device 62, a rotating frame 63, a pressing rotating block 64 and a pressing block 65, the side pressure fixing seat 61 is fixedly connected with the support 1, the side pressure driving device 62 is fixedly connected with the lower part of the side pressure fixing seat 61, the rotating frame 63 is fixedly connected with the movable end of the side pressure driving device 62, the middle part of the pressing rotating block 64 is rotatably connected with the upper part of the side pressure fixing seat 61 through a rotating shaft 66, the first end of the pressing rotating block 64 is slidably connected with the rotating frame 63, and the second end of the pressing rotating block 64 is clampingly connected with the pressing block 65, the side pressure driving device 62 is a telescopic air cylinder, and the pressing block 65 is made of rubber material. The downward pressing force is applied to the lower pressing plate 4 by the side pressure assembly 6 to extrude the sealing gasket 44, the sealing gasket 44 is deformed to tightly contact the controller housing, the rebound force of the buffer spring 38 in the pressing sealing assembly 3 is effectively avoided, the deformation amount of the sealing gasket 44 is too small, and then a gap for inhaling external gas is formed, and the air tightness detection is affected.

[0028] In the embodiment, the upper part of the side pressure fixing seat 61 is provided with a guide piece matched with the rotating frame 63 and a slotted hole matched with the pressing rotating block 64, the slotted hole is formed with a through hole matched with the rotating shaft 66, and the guide piece plays a guiding role in the up-down displacement of the rotating frame 63, so that the uneven stress of the pressing block 65 in the extrusion process of the lower pressing plate 4 is effectively reduced, the one-side rotating force of the pressing rotating piece is caused, and then the stress of the rotating seat is skewed, and the pressing limiting precision is affected.

[0029] In the embodiment, the pressing rotating block 64 is in a "Z" type, the pressing rotating block 64 is formed with a waist-shaped groove for slidably connecting the rotating frame 63, and the other side of the pressing rotating block 64 is formed with a positioning hole for clampingly connecting the pressing block 65. The "Z" type structure effectively saves the installation space of the pressing rotating block 64, in the retracted state of the side pressure driving device 62, the pressing rotating block 64 is in a lifted state, and the space for downward movement of the lower pressing plate 4 is left, and the space structure is compact.

[0030] In the embodiment, the detection assembly 5 comprises detection driving devices 51 fixedly connected with the support 1, a slide rail set 52, a sliding frame 53 slidably connected to the slide rail set 52, a sliding block 54 slidably connected to the upper portion of the sliding frame 53 and used for clamping and fixing the air pressure detection piece 56, and a detection adjusting piece 55 arranged at the lower portion of the sliding frame 53 and used for driving the sliding block 54 to move up and down. The slide rail set 52 is arranged at one side of the detection driving devices 51. The movable end of the detection driving devices 51 is fixedly connected with the sliding frame 53. The detection driving devices 51 are telescopic air cylinders. The sliding frame 53 is formed with an extension portion fixedly connected with the movable end of the detection driving devices 51. Two sets of guide rails are arranged at the upper portion of the slide rail set 52. The sliding block 54 is slidably connected with the two sets of guide rails. The Y-axis direction and Z-axis direction movements of the air pressure detection piece 56 are respectively adjusted by the detection driving devices 51 and the detection adjusting piece 55. The air pressure detection piece 56 can be quickly adjusted according to different positions of the detection ports 43. The detection adjusting piece 55 used for adjusting the Z-axis direction movement can press and fix the air pressure detection piece 56 at the detection ports 43 through a threaded screw rod, further improves the sealing effect, and ensures the air pressure detection precision.

[0031] In the embodiment, the sliding block 54 is formed with an adjusting hole. The sliding frame 53 is formed with a limiting block 531. The detection adjusting piece 55 comprises an adjusting driving device 551 and a transmission screw rod 552. The adjusting driving device 551 is fixedly connected with the sliding frame 53. One end of the transmission screw rod 552 is connected with the adjusting driving device 551 through a shaft coupling 553. The other end of the transmission screw rod 552 is rotationally connected with the limiting block 531. The transmission screw rod 552 is threadedly connected with the adjusting hole. The adjusting driving device 551 is a rotary motor. The up and down positions of the air pressure detection piece 56 are adjusted by the screw rod cylinder. The transmission structure is simple and effective. The installation space is maximally saved. The overall structure is more compact.

[0032] In the embodiment, the top of the support 1 is provided with a plurality of guide sleeves 11, the compression sealing assembly 3 comprises a compression driving device 31, a mounting seat 32, a connecting plate 33 and a plurality of floating compression rods 34, the compression driving device 31 is fixedly connected with the upper part of the support 1, the mounting seat 32 is fixedly connected with the movable end of the compression driving device 31, the mounting seat 32 is formed with a mounting groove 35 and a plurality of first guide rods 36, each first guide rod 36 is correspondingly and slidably connected with the corresponding guide sleeve 11, the connecting plate 33 is slidably connected with the mounting groove 35, the connecting plate 33 is fixedly connected with two groups of second guide rods 37 which are slidably connected with the lower pressing plate 4, and the plurality of floating compression rods 34 are arranged between the connecting plate 33 and the lower pressing plate 4, the middle part of each floating compression rod 34 is provided with a buffer spring 38 for absorbing the downward pressure, the compression driving device 31 is a hydraulic machine and has a large longitudinal stroke, the plurality of guide sleeves 11 and the plurality of first guide rods 36 are symmetrically arranged on the two sides of the compression driving device 31, so that the mounting seat 32 can keep parallel during the upward and downward movement, the sliding groove structure facilitates the sliding installation of the connecting plate 33, and the convenience of daily installation and maintenance is improved, the floating compression rod 34 absorbs the excessive downward pressure of the compression driving device 31 during the downward movement through the plurality of buffer springs 38, and the controller housing is prevented from being damaged due to the excessive downward pressure of the compression driving device 31.

[0033] In the embodiment, the floating compression rod 34 comprises a first compression rod 341 and a second compression rod 342, the first compression rod 341 is fixedly connected with the connecting plate 33, the second compression rod 342 is fixedly connected with the lower pressing plate 4, the second compression rod 342 is formed with a guide rod which is slidably connected with the first compression rod 341, the buffer spring 38 is sleeved outside the guide rod and is in abutment with the first compression rod 341, the first compression rod 341 and the second compression rod 342 form the guide sleeve 11 and the guide rod structure, have a guiding effect during the downward movement, and ensure that the buffer spring 38 keeps linear movement during compression and rebound.

[0034] In the embodiment, the lower pressing plate 4 is formed with a sealing gasket 44 which is in contact with the controller, the sealing gasket 44 is formed with a plurality of air holes which are all communicated with the air channel 41, and the sealing gasket 44 is a rubber gasket and has good elasticity.

[0035] In the embodiment, the base 2 is formed with a plurality of connecting holes 23 for mounting positioning columns 21 and guide pins 22, the positioning column 21 is used for limiting the mounting position of the controller housing and is in abutment with the side edge of the controller housing, the guide pin 22 has a height smaller than that of the positioning column 21 and is connected with the corresponding hole of the controller housing in a guiding mode, and the plurality of connecting holes 23 are irregularly arranged and can quickly adjust the positions of the positioning column 21 and the guide pin 22 for different controllers.

[0036] The working principle of the utility model:

[0037] Before use, according to the shape of the controller shell, the plurality of positioning columns 21 and the plurality of guide pins are screwed into the base 2;

[0038] The controller shell is placed on the base 2, the plurality of positioning columns 21 abut against the controller shell to limit, the plurality of guide pins are inserted into the holes in the controller shell, after positioning, the driving device 31 is pressed down to move, the lower pressing plate 4 is close to and pressed tightly on the open side of the controller shell to form a pre-pressing, the sealing gasket 44 is extruded and deformed to tightly fit the edge of the controller shell, the side pressing assembly 6 on both sides of the base 2 applies a downward pressing force to the lower pressing plate 4 to extrude the sealing gasket 44, the deformation of the sealing gasket 44 is increased to increase the area of the sealing gasket 44 tightly fitted with the controller shell, then the test driving device pushes the sliding frame 53 close to the base 2, the detection adjusting part 55 makes the air pressure detection part 56 tightly fitted with the detection port 43 to form a sealed state, after pressing, the external vacuum generating device is started, the air in the controller shell is extracted, the air pressure detection part 56 detects the internal pressure in real time, when the air pressure reaches the output value of the vacuum generator, the air tightness of the controller shell is good, when the air pressure fails to reach the output value of the vacuum generator, there is a gap in the controller shell.

[0039] Although the embodiments of the utility model are described in actual schemes, but do not constitute the limitation to the meaning of the utility model, for the person skilled in the art, according to the modification of the embodiments of the present specification and the combination with other schemes are obvious.

Claims

1. A leak detection mechanism for a controller housing, comprising a bracket (1), a base (2) disposed in the middle of the bracket (1) for placing the controller, and a pressing and sealing assembly (3) disposed on the upper part of the bracket (1), the pressing and sealing assembly (3) having a lower pressure plate (4) that fits tightly against the opening side of the controller, the lower pressure plate (4) forming an air passage (41) for drawing air out of the controller, characterized in that: Both sides of the lower pressing plate (4) are provided with pressing grooves (42), the front side of the lower pressing plate (4) is formed with a detection port (43) in communication with the air channel (41), a detection assembly (5) and two groups of side pressing assemblies (6) are fixedly connected to the middle part of the support (1), each side pressing assembly (6) is correspondingly arranged on one side of the base (2) and is pressed and matched with the corresponding pressing groove (42), the detection assembly (5) is arranged on the front side of the base (2), and the detection assembly (5) is provided with an air pressure detection piece (56) abutting the detection port (43) to detect air pressure changes.

2. A spill-resistant mechanism for a controller housing as in claim 1, wherein: The side pressing assembly (6) comprises a side pressing fixed seat (61), a side pressing driving device (62), a rotating frame (63), a pressing rotating block (64) and a pressing block (65), the side pressing fixed seat (61) is fixedly connected with the support (1), the side pressing driving device (62) is fixedly connected with the lower part of the side pressing fixed seat (61), the rotating frame (63) is fixedly connected with the movable end of the side pressing driving device (62), the middle part of the pressing rotating block (64) is rotatably connected with the upper part of the side pressing fixed seat (61) through a rotating shaft (66), the first end of the pressing rotating block (64) is slidably connected with the rotating frame (63), and the second end of the pressing rotating block (64) is clampedly connected with the pressing block (65).

3. A spill-resistant mechanism for a controller housing as defined in claim 2, wherein: The upper part of the side pressing fixed seat (61) is provided with a guide piece guiding the rotating frame (63) and a slot rotatably matched with the pressing rotating block (64), and the slot is formed with a through hole matched with the rotating shaft (66).

4. A spill-resistant mechanism for a controller housing as in claim 2, wherein: The pressing rotating block (64) is "Z"-shaped, the pressing rotating block (64) is formed with a waist-shaped groove for slidably connecting the rotating frame (63), and the other side of the pressing rotating block (64) is formed with a positioning hole clampedly connected with the pressing block (65).

5. A spill-resistant mechanism for a controller housing as recited in claim 1, wherein: The detection assembly (5) comprises a detection driving device (51) fixedly connected with the support (1), a sliding rail group (52), a sliding frame (53) slidably connected with the sliding rail group (52), a sliding pressing block (54) slidably connected with the upper part of the sliding frame (53) and clamping and fixing the air pressure detection piece (56), and a detection adjusting piece (55) arranged at the lower part of the sliding frame (53) and used for driving the sliding pressing block (54) to move up and down, the sliding rail group (52) is arranged on one side of the detection driving device (51), and the movable end of the detection driving device (51) is fixedly connected with the sliding frame (53).

6. A spill-resistant mechanism for a controller housing as in claim 5, wherein: The sliding block (54) is formed with an adjusting hole, the sliding frame (53) is formed with a limiting block (531), the detection adjusting part (55) comprises an adjusting driving device (551) and a transmission screw rod (552), the adjusting driving device (551) is fixedly connected with the sliding frame (53), one end of the transmission screw rod (552) is connected with the adjusting driving device (551) through a shaft coupling (553), the other end of the transmission screw rod (552) is rotationally connected with the limiting block (531), and the transmission screw rod (552) is in threaded connection with the adjusting hole.

7. A spill-resistant mechanism for a controller housing as recited in claim 1, wherein: The top of the support (1) is provided with a plurality of guide sleeves (11), the compression sealing assembly (3) comprises a compression driving device (31), a mounting seat (32), a connecting plate (33) and a plurality of floating compression rods (34), the compression driving device (31) is fixedly connected with the upper portion of the support (1), the mounting seat (32) is fixedly connected with the movable end of the compression driving device (31), the mounting seat (32) is formed with a mounting groove (35) and a plurality of first guide rods (36), each first guide rod (36) is in sliding fit with a corresponding guide sleeve (11), the connecting plate (33) is in sliding fit with the mounting groove (35), the connecting plate (33) is fixedly connected with two groups of second guide rods (37) in sliding fit with the lower pressing plate (4), and a plurality of floating compression rods (34) are arranged between the connecting plate (33) and the lower pressing plate (4), and the middle portion of each floating compression rod (34) is provided with a buffer spring (38) for absorbing the downward pressure.

8. A spill-resistant mechanism for a controller housing as defined in claim 7, wherein: The floating compression rod (34) comprises a first compression rod (341) and a second compression rod (342), the first compression rod (341) is fixedly connected with the connecting plate (33), the second compression rod (342) is fixedly connected with the lower pressing plate (4), the second compression rod (342) is formed with a guide rod in sliding fit with the first compression rod (341), and the buffer spring (38) is sleeved outside the guide rod and is in push fit with the first compression rod (341).

9. A spill-resistant mechanism for a controller housing as recited in claim 1, wherein: The lower pressing plate (4) is formed with a sealing gasket (44) on the contact surface of the controller, the sealing gasket (44) is formed with a plurality of air holes, and the plurality of air holes are in communication with the air duct (41).

10. A spill-resistant mechanism for a controller housing as recited in claim 1, wherein: The base (2) is formed with a plurality of connecting holes (23) for mounting positioning columns (21) and guide pins (22).

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