Air tightness detection equipment for new energy controller shell

Abstract

The invention discloses airtightness detection equipment for a new energy controller shell, and relates to the technical field of airtightness detection. Comprising an equipment body, a pressing air cylinder is fixedly mounted at the top end of the inner wall of the equipment body, a lifting plate is connected to the output end of the pressing air cylinder, a pressing plate is fixedly connected to the bottom end of the lifting plate through a first telescopic rod, a buffering assembly is arranged on the upper surface of the pressing plate, and a mounting plate is connected to the bottom end of the pressing plate; and a plurality of groups of pressing rods are mounted at the bottom end of the mounting plate. Extrusion acting force is formed on the rotating rod, then gas pre-stored in the fixing cylinder is extruded into the gas bag through the connecting channel, the gas bag is promoted to expand and deform, and the rotating rod rotates circumferentially around the axis during extrusion, so that the gas bag is prevented from being damaged. Therefore, the air bag can be tightly attached to the outer peripheral wall of the inflation connector and the inner peripheral wall of the detection interface of the controller shell in all directions, and the sealing effect of the inflation connector is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air tightness detection, in particular to an air tightness detection equipment for a new energy controller shell. BACKGROUND

[0002] The new energy controller shell is a shell structure for wrapping and protecting the internal elements of the new energy controller. The new energy controller is usually used in new energy vehicles and devices such as electric vehicles, hybrid vehicles, electric bicycles, etc. It is mainly responsible for managing the flow of electric energy, controlling the operation of the motor, and monitoring the system status, etc. Therefore, the new energy controller shell needs to have the functions of heat dissipation, dust prevention, waterproofing, etc. while protecting the internal electronic elements of the controller.

[0003] In the prior art, when the shell is subjected to air tightness detection, a pneumatic cylinder is usually used to drive a pressing block to fix and position the measured shell, and then a pre-set inflation joint is used to introduce gas into the interior of the shell to complete the air tightness detection operation. However, in actual detection scenarios, the thickness of the measured shell varies. This thickness difference may directly cause significant differences in the structural rigidity, deformation degree and stress distribution state of the sealing contact surface of the shell. Since the inflation joint in the prior art is designed with a fixed size and cannot be adaptively adjusted according to the thickness difference of the measured shell, it is difficult to form a stable and reliable sealing fit between the inflation joint and the shell. The instability of the sealing effect may interfere with the accuracy of the air tightness detection of the shell, resulting in deviations in the detection results and failing to truly reflect the actual air tightness level of the shell, affecting the normal conduct of subsequent detection operations and the reliability of product quality determination, and being inconvenient for detection operations. SUMMARY

[0004] Therefore, the present application aims to provide an air tightness detection equipment for a new energy controller shell to solve the technical problems raised in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: an air tightness detection equipment for a new energy controller shell, comprising a device main body, a pressing air cylinder is fixedly installed at the top end of the inner wall of the device main body, and a lifting plate is connected to the output end of the pressing air cylinder, a pressing plate is fixedly connected to the bottom end of the lifting plate through a first telescopic rod, a buffer assembly is arranged on the upper surface of the pressing plate, an installation plate is connected to the bottom end of the pressing plate, a plurality of pressing rods are installed at the bottom end of the installation plate, a sealing assembly is arranged at the middle of the plurality of pressing rods at the bottom end of the installation plate, a through slot is formed in the surface of the pressing plate and the installation plate, the sealing assembly comprises a lifting rod connected to the inner wall of the through slot, a gas pump is fixedly installed on the upper surface of the device main body, and a gas conveying pipe is fixedly connected to the surface of the gas pump.

[0006] Preferably, the inner wall of the lifting rod is slidably connected with a rotating rod, the top end of the rotating rod extends above the lifting rod and is fixedly connected with the gas conveying pipe, the bottom end of the rotating rod is fixedly connected with a fixed rod through a second telescopic rod, the bottom end of the fixed rod is fixedly connected with an inflation connector, the lifting rod, the fixed rod and the inflation connector are connected, a sliding groove is formed in the outer wall of the rotating rod, and a guide block fixedly connected to the inner wall of the sliding groove is arranged in contact with the inner wall of the sliding groove.

[0007] Preferably, the outer wall of the fixed rod is fixedly and symmetrically connected with two groups of fixed cylinders, the inner wall of the fixed cylinder is slidably connected with a push rod at the top end, the push rod is fixedly connected with the rotating rod, the bottom end of the fixed rod is connected with an air bag, and the bottom end of the fixed cylinder is connected with a connecting pipe connected with the air bag.

[0008] Preferably, the buffer assembly comprises a transmission rod rotatably connected to the inner wall of the pressing plate, one end of the transmission rod extends to the outside of the pressing plate and is fixedly connected with a knob, the outer wall of the transmission rod is fixedly and symmetrically connected with two groups of driving bevel gears, a driven bevel gear is engaged above each of the two groups of driving bevel gears, the top end of the driven bevel gear is connected with a receiving block located on the upper surface of the outer wall of the pressing plate through a connecting piece, and the receiving block is rotatably connected with the pressing plate.

[0009] Preferably, the top end of the receiving block is fixedly connected with a connecting rod extending above the pressing plate, the connecting rod is slidably connected with the pressing plate, and the lower surface of the pressing plate is fixedly and symmetrically connected with two groups of springs sleeved on the outer wall of the connecting rod.

[0010] Preferably, the outer wall of the receiving block is fixedly connected with a fixed block, the top end of the fixed block is sleeved on the outer wall of a spring ring on the spring, a receiving groove is formed in the top end of the receiving block, the bottom end of the spring extends to the inner wall of the receiving groove, and the receiving groove is matched with the spring ring.

[0011] Preferably, the outer wall of the transmission rod is fixedly connected with a gear between the two groups of driving bevel gears, a rack is engaged on one side of the gear, and the surface of the rack away from the gear is fixedly connected with the lifting rod through a supporting rod.

[0012] In summary, the present application mainly has the following advantages: 1. The application drives the rotating rod to push the push rod to move axially along the fixed cylinder by forming extrusion force on the rotating rod during the descending process of the mounting plate, and then extrudes the pre-stored gas in the fixed cylinder to the inside of the air bag through the connecting channel, so that the air bag is deformed by swelling, and when the rotating rod is extruded, it realizes the circumferential rotation around the shaft center by means of the sliding fit structure of its own sliding groove and sliding block. The rotating action is combined with the swelling of the air bag, so that the air joint can be tightly fitted with the peripheral wall of the inflation connector and the inner peripheral wall of the controller shell detection interface in all directions, which improves the sealing effect of the inflation connector to a certain extent, avoids the interference of unstable sealing on the detection accuracy, reduces the possibility of deviation of the detection result, and significantly improves the accuracy of the air tightness detection. At the same time, before the compression rod contacts the controller shell, the elastic deformation characteristics of the spring can play a buffering unloading role, effectively relieving the problem of instantaneous pressure overload, avoiding the structural damage of the controller shell during the detection process, affecting the detection, and being simple to operate and convenient to use.

[0013] 2. When the air tightness of the controller shell with different thicknesses is detected, the knob drives the transmission rod to rotate around its own axis first, the transmission rod drives the driving bevel gear to rotate synchronously, the driving bevel gear meshes with the driven bevel gear to drive the receiving block to rotate circumferentially, so that the receiving block drives the fixed block to rotate synchronously, and the spring is orderly wound into the receiving groove of the receiving block under the traction of the fixed block during the rotation of the fixed block, so as to realize the accurate adjustment of the effective number of turns of the spring. When the effective number of turns of the spring is more, the spring stiffness decreases, and the swelling volume of the air bag decreases at this time. On the contrary, the effective number of turns of the spring is less, the spring stiffness increases, and the swelling volume of the air bag increases. The spring stiffness and the initial height of the lifting rod can realize self-adaptive linkage adjustment without the need of additional replacement of detection components or complex debugging, so that the corresponding specification shell can be adapted, which is simple to operate and convenient to use. By synchronously adjusting the spring stiffness and the initial height of the lifting rod, the controller shell with different thickness specifications can be adaptively adapted, and the applicability is strong. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure perspective view of the application; Figure 2 It is a part structure bottom view perspective view of the application; Figure 3 It is a lifting plate top view structure perspective view of the application; Figure 4 It is a buffer assembly bottom view structure perspective view of the application; Figure 5 It is a connecting rod top view structure perspective view of the application; Figure 6 It is a whole structure perspective view of the sealing assembly of the application; Figure 7 It is a bottom structure perspective view of the sealing assembly of the application; Figure 8 It is a plane structure schematic view of the sealing assembly of the application; Figure 9 It is a bottom structure perspective view of the sealing assembly of the application; Figure 6 It is a bottom structure perspective view of the sealing assembly of the application;

[0015] In the figure: 1, device main body; 2, lifting plate; 3, pressing plate; 4, mounting plate; 41, pressing rod; 51, transmission rod; 52, driving bevel gear; 53, driven bevel gear; 54, storage block; 55, connecting rod; 56, spring; 57, fixed block; 61, lifting rod; 62, rack; 63, gear; 64, fixed cylinder; 641, connecting pipe; 65, push rod; 66, rotating rod; 661, sliding groove; 67, air bag; 68, fixed rod; 69, inflation joint; 7, gas conveying pipe. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. The embodiments described below with reference to the drawings are exemplary and are only used to explain the application, and cannot be understood as a limitation of the application.

[0017] The embodiments of the application will be described below according to the overall structure of the application.

[0018] A kind of air tightness detection equipment for new energy controller shell, as shown in Figure 1 Figure 9 It is shown, including device main body 1, pressure cylinder is fixedly installed in the inner wall top end of device main body 1, and the output end of pressure cylinder is connected with lifting plate 2, the bottom of lifting plate 2 is fixedly connected with pressing plate 3 by first telescopic rod, the upper surface of pressing plate 3 is equipped with buffer assembly, the bottom of pressing plate 3 is connected with mounting plate 4, and the bottom of mounting plate 4 is installed with multiple groups of pressing rod 41, lifting plate 2 is driven to move downwards by pressure cylinder, in turn, it can drive pressing plate 3 and mounting plate 4 to move downwards, when pressing rod 41 contacts with controller shell, it can be fixed to controller shell by pressing rod 41, to facilitate air tightness detection, sealing assembly is arranged at the bottom of mounting plate 4 and located in the middle of multiple groups of pressing rod 41, and the surface of pressing plate 3 and mounting plate 4 is all equipped with through slot, sealing assembly includes lifting rod 61 connected to the inner wall of through slot, air pump is fixedly installed on the upper surface of device main body 1, and the surface of air pump is fixedly connected with gas conveying pipe 7, air is conveyed to rotating rod 66 by gas conveying pipe 7, in turn, it can cooperate with inflation joint 69 to carry out air tightness detection operation to controller shell.

[0019] Refer to Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 ,​Figure 9 It can be known that the rotating rod 66 is slidably connected to the inner wall of the lifting rod 61, the top end of the rotating rod 66 extends above the lifting rod 61, and is fixedly connected with the gas conveying pipe 7, the gas conveying pipe 7 is communicated with the rotating rod 66, the bottom end of the rotating rod 66 is fixedly connected with the fixed rod 68 through the second telescopic rod, the bottom end of the fixed rod 68 is fixedly connected with the inflation connector 69, the lifting rod 61, the fixed rod 68 and the inflation connector 69 are communicated, when the air pump conveys gas to the rotating rod 66 through the gas conveying pipe 7, the gas can be transmitted to the inflation connector 69 through the cooperation of the lifting rod 61 and the fixed rod 68, and then transmitted to the inside of the controller shell through the inflation connector 69, and then the air tightness detection is carried out, the outer wall of the rotating rod 66 is provided with a sliding groove 661, the inner wall of the sliding groove 661 is in contact with a guide block fixedly connected to the inner wall of the through groove, through the cooperation of the sliding groove 661 and the guide block, the rotating rod 66 will rotate after being extruded, and then the air bag 67 can be conveniently self-adapted to fit and compensate, and the sealing stability is improved. The outer wall of the fixed rod 68 is fixedly and symmetrically connected with two groups of fixed cylinders 64, the inner wall of the fixed cylinder 64 is slidably connected with a push rod 65, the push rod 65 is fixedly connected with the rotating rod 66, the bottom end of the fixed rod 68 is connected with an air bag 67, and the bottom end of the fixed cylinder 64 is connected with a connecting pipe 641 communicated with the air bag 67, when the mounting plate 4 moves downward, the rotating rod 66 is in contact with the mounting plate 4, and then the push rod 65 can be pressed by the rotating rod 66, the gas in the fixed cylinder 64 is extruded by the push rod 65, and then the air bag 67 is expanded, and the inflation connector 69 and the sealing interface connection are sealed. The outer wall of the transmission rod 51 is fixedly connected with a gear 63 between the two groups of driving bevel gears 52, one side of the gear 63 is engaged with a rack 62, and the surface away from the gear 63 of the rack 62 is fixedly connected with the lifting rod 61 through a support rod. When the transmission rod 51 rotates, the gear 63 can be driven to rotate, and when the gear 63 rotates, the rack 62 can be driven to move vertically, and then the initial height of the rotating rod 66 can be conveniently adjusted.

[0020] Referring to Figure 2 - Figure 5 It can be known that the buffer assembly comprises a transmission rod 51 rotatably connected to the inner wall of the pressing plate 3, one end of the transmission rod 51 extends to the outside of the pressing plate 3 and is fixedly connected with a knob, the outer wall of the transmission rod 51 is fixedly and symmetrically connected with two groups of driving bevel gears 52, the upper sides of the two groups of driving bevel gears 52 are engaged with driven bevel gears 53, the top end of the driven bevel gear 53 is connected with a receiving block 54 located on the upper surface of the outer wall of the pressing plate 3 through a connecting piece, and the receiving block 54 is rotatably connected with the pressing plate 3. By rotating the transmission rod 51 around its own axis through the knob, the two groups of driving bevel gears 52 are synchronously rotated, the driving bevel gear 52 drives the driven bevel gear 53 to rotate, and then the receiving block 54 is rotated, so that the number of turns of the spring 56 can be conveniently adjusted.

[0021] The top end of the accommodation block 54 is fixedly connected with a connecting rod 55 extending above the pressing plate 3, the connecting rod 55 is slidingly connected with the pressing plate 3, the pressing plate 3 can limit the connecting rod 55, and the lower surface of the pressing plate 3 is fixedly connected with two groups of springs 56 sleeved on the outer wall of the connecting rod 55, the elastic deformation characteristics of the springs 56 play a buffering and unloading effect on the controller shell.

[0022] The outer wall of the accommodation block 54 is fixedly connected with a fixed block 57, the top end of the fixed block 57 is sleeved on the outer wall of the spring ring of the spring 56, the top end of the accommodation block 54 is provided with an accommodation groove, the bottom end of the spring 56 extends to the inner wall of the accommodation groove, and the accommodation groove is matched with the spring ring, when the accommodation block 54 drives the fixed block 57 to rotate synchronously, under the traction of the fixed block 57, the spring 56 can be accommodated to the inner wall of the accommodation groove, and then the elastic stiffness of the spring 56 is adjusted.

[0023] The working principle of the application is that when the air tightness detection of the controller shell is performed, the pressure threshold of the pressing rod 41 and the elastic stiffness of the spring 56 are adjusted according to the size of the controller shell to be detected. First, rotate the knob, the knob drives the driving transmission rod 51 to rotate around its axis, the transmission rod 51 drives the two groups of driving bevel gears 52 to rotate at the same time, the driving bevel gears 52 drive the driven bevel gears 53 to rotate when the driving bevel gears 52 rotate, the driven bevel gears 53 drive the accommodation block 54 to rotate synchronously, the accommodation block 54 drives the fixed block 57 to rotate synchronously when rotating, since the top end of the fixed block 57 is sleeved with the spring ring on the spring 56, when the fixed block 57 rotates with the accommodation block 54, the spring 56 is orderly wound into the preset accommodation groove of the accommodation block 54 under the traction of the fixed block 57, and then the effective number of turns of the spring 56 is accurately adjusted. At the same time, the transmission rod 51 drives the gear 63 to rotate synchronously when rotating, the gear 63 drives the rack 62 to ascend and descend along the vertical direction through meshing transmission, and then the initial height of the lifting rod 61 is adjusted, the adjustment action is synchronous and linked with the adjustment of the effective number of turns of the spring 56, when the thickness of the controller shell is thin, the more the effective number of turns of the spring 56 is, the lower the elastic stiffness of the spring 56 is (that is, the difficulty of elastic deformation is reduced), at this time, the vertical distance between the lifting rod 61 and the detection table surface is increased, and the inflation volume of the air bag 67 is reduced, when the thickness of the controller shell is thick, the less the effective number of turns of the spring 56 is, the higher the elastic stiffness of the spring 56 is (that is, the difficulty of elastic deformation is increased), at this time, the vertical distance between the lifting rod 61 and the detection table surface is reduced, and the inflation volume of the air bag 67 is increased. When the controller shell needs to be detected, first, the controller shell is placed in the preset work station of the detection table top, ensuring that the shell detection interface is upward and coaxially aligned with the axis of the inflation connector 69, then the compression cylinder is started, the compression cylinder drives the lifting plate 2 to displace downward along the vertical direction, the inflation connector 69 is inserted into the inner wall of the detection interface on the controller shell (a detection interface is generally reserved on the existing controller shell for gas injection during air tightness detection), the lifting plate 2 continues to displace downward, driving the pressing plate 3 and the mounting plate 4 to descend synchronously until the compression rod 41 contacts the controller shell, and the controller shell is fixed and compressed; Before the compression rod 41 contacts the controller shell, the lifting plate 2 moves downward, the spring 56 is elastically deformed to achieve buffer unloading, avoiding that the instantaneous pressure overload causes structural damage to the controller shell, at this time, the bottom end of the inflation connector 69 and the end face of the detection interface form a limiting fit, when the pressing plate 3 descends with the lifting plate 2, the rotating rod 66 moves downward, causing the second extension rod between the lifting rod 61 and the fixed rod 68 to be axially compressed, the push rod 65 extrudes the gas pre-stored in the fixed cylinder 64 to the inside of the air bag 67 through the connecting pipe 641, so that the air bag 67 expands, at the same time, the sliding fit between the sliding groove 661 on the rotating rod 66 and the sliding block enables the rotating rod 66 to rotate circumferentially along the axis when being extruded by the mounting plate 4, and then the air bag 67 and the outer wall of the inflation connector 69 and the inner wall of the detection interface form a close fit, improving the sealing effect of the inflation connector 69, preventing the instability of the sealing effect from interfering with the accuracy of the air tightness detection of the controller shell, avoiding deviation of the detection result, and improving the accuracy of the detection result to a certain extent, then the gas pump is started, the gas is transported to the inflation connector 69 through the air passage in the rotating rod 66 through the gas conveying pipe 7, and then injected into the controller shell by the inflation connector 69, the air tightness of the controller shell is detected by detecting the change of the gas pressure or the leakage amount, the operation is simple and convenient, the elastic rigidity of the spring 56 and the initial height of the lifting rod 61 can be adaptively adapted to the controller shells of different thickness specifications through synchronous adjustment, and the applicability is strong, the contents not described in detail in the description belong to the prior art known to those skilled in the art.

[0024] Although the embodiments of the present application have been shown and described, the specific embodiments are merely illustrative of the present application, and are not intended to limit the application, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and those skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. Airtightness detection equipment for new energy controller shell, comprising equipment main body (1), characterized in that: The equipment body (1) inner wall top fixedly installed has the pressing cylinder, and the pressing cylinder output end is connected with the lifting plate (2), the lifting plate (2) bottom is fixedly connected with the pressing plate (3) through the first telescopic link, the pressing plate (3) upper surface is equipped with the buffer assembly, the pressing plate (3) bottom is connected with the mounting plate (4), the mounting plate (4) bottom is installed with multiple sets of pressing rod (41), the mounting plate (4) bottom is located in the middle of multiple sets of pressing rod (41) and is equipped with the sealing assembly, the pressing plate (3) and the mounting plate (4) surface are all set up with the through slot, the sealing assembly includes the lifting rod (61) that is connected in the through slot inner wall, the equipment body (1) upper surface is fixedly installed with the air pump, and the air pump surface is fixedly connected with the gas pipe (7).

2. The air tightness detection device for a new energy controller housing according to claim 1, characterized in that: The lifting rod (61) inner wall is slidably connected with the rotating rod (66), the rotating rod (66) top extends to the lifting rod (61) above, and is fixedly connected with the gas pipe (7), the rotating rod (66) bottom is fixedly connected with the fixed rod (68) through the second telescopic link, the fixed rod (68) bottom is fixedly connected with the inflation joint (69), the lifting rod (61), the fixed rod (68), the inflation joint (69) are connected, the rotating rod (66) outer wall is set up with the sliding slot (661), the sliding slot (661) inner wall is contacted with the guide block fixedly connected in the through slot inner wall.

3. The air tightness detection device for a new energy controller housing according to claim 2, characterized in that: The fixed rod (68) outer wall is fixedly connected with two sets of fixed cylinders (64) symmetrically, the fixed cylinder (64) inner wall top is slidably connected with the push rod (65), the push rod (65) is fixedly connected with the rotating rod (66), the fixed rod (68) bottom outer wall is connected with the air bag (67), the fixed cylinder (64) bottom is connected with the connecting pipe (641) that is connected with the air bag (67).

4. The air tightness detection device for a new energy controller housing according to claim 1, characterized in that: The buffer assembly includes the transmission rod (51) rotationally connected to the inner wall of the pressing plate (3), one end of the transmission rod (51) extends to the outside of the pressing plate (3), and is fixedly connected with a knob, the outer wall of the transmission rod (51) is fixedly connected with two sets of driving bevel gears (52) symmetrically, the upper portions of the two sets of driving bevel gears (52) are engaged with a driven bevel gear (53), the top of the driven bevel gear (53) is connected with a receiving block (54) on the upper surface of the outer wall of the pressing plate (3) through a connecting piece, and the receiving block (54) is rotationally connected with the pressing plate (3).

5. The air tightness detection device for a new energy controller housing according to claim 4, characterized in that: The top of the receiving block (54) is fixedly connected with a connecting rod (55) extending above the pressing plate (3), the connecting rod (55) is slidably connected with the pressing plate (3), and the lower surface of the pressing plate (3) is fixedly connected with two sets of springs (56) sleeved on the outer wall of the connecting rod (55) symmetrically.

6. The air tightness detection device for a new energy controller housing according to claim 5, characterized in that: The outer wall of the receiving block (54) is fixedly connected with a fixed block (57), the top of the fixed block (57) is sleeved on the outer wall of the spring ring of the spring (56), the top of the receiving block (54) is provided with a receiving groove, the bottom of the spring (56) extends to the inner wall of the receiving groove, and the receiving groove is matched with the spring ring.

7. The air tightness detection device for a new energy controller housing according to claim 6, characterized in that: The outer wall of the transmission rod (51) is fixedly connected with a gear (63) between the two sets of driving bevel gears (52), one side of the gear (63) is engaged with a rack (62), and the surface of the rack (62) away from the gear (63) is fixedly connected with a lifting rod (61) through a support rod.

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