Automobile seat slide rail noise detection device and detection method

Abstract

The invention discloses an automobile seat slide rail noise detection device and detection method, the noise detection device comprises a rack, and the rack is provided with a placing plate for placing a carrier. The loading mechanism comprises a lifting driving part fixed to the rack, the lifting driving part drives a lifting assembly to ascend and descend, the lifting assembly is connected with a loading assembly located over the containing plate through a plurality of locking assemblies, and the loading assembly can ascend and descend synchronously with the lifting assembly, can be separated from the lifting assembly and is placed on the seat sliding rail. The locking assembly comprises a locking air cylinder fixed to the lifting assembly, the locking air cylinder can drive the locking rod to do reciprocating motion in the horizontal direction, and a locking hole allowing the locking rod to be inserted therein is formed in the load assembly. The power supply mechanism is arranged on the rack and can supply power to the seat sliding rail. The testing mechanism is arranged on the rack and comprises an acceleration sensor used for collecting acceleration when the seat sliding rail vibrates. The device can simulate the actual use condition of the seat slide rail, and noise detection of the seat slide rail can be rapidly carried out.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts testing, and in particular to a device and method for detecting noise of an automobile seat slide rail. Background Art

[0002] More and more cars are using seats equipped with electric control devices, which include H-shaped seat slides that can slide electrically to adjust the seat position. Electric seat slides must meet the two requirements of convenience and comfort of adjustment. If the slides vibrate and make a lot of noise during adjustment, it will inevitably affect the comfort of passengers, especially for drivers who are driving. This discomfort can easily distract their attention and affect driving safety. Therefore, it is necessary to test the noise of the seat slides.

[0003] In the prior art, the noise detection of the seat rail is to place the seat rail in a soundproof box and detect it through a sound sensor, which has high requirements for the environment and low test efficiency. It is also unable to simulate the actual use of the seat rail, and the test results may have certain deviations. Summary of the invention

[0004] In order to overcome the above disadvantages, the purpose of the present invention is to provide a vehicle seat rail noise detection device and detection method, which can simulate the actual use of the seat rail and quickly perform seat rail noise detection.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: a vehicle seat rail noise detection device, which is used for noise detection of the seat rail, the seat rail is fixed on the carrier, and the noise detection device includes: A rack, on which a placement plate is provided for placing the carrier; The load mechanism includes a lifting drive member fixed on the frame, the lifting drive member drives a lifting assembly to lift, the lifting assembly is connected to a load assembly located directly above the placement plate through a plurality of locking assemblies, the load assembly can be lifted and lowered synchronously with the lifting assembly and can be separated from the lifting assembly and placed on the seat slide rail, the locking assembly includes a locking cylinder fixed on the lifting assembly, the locking cylinder can drive a locking rod to reciprocate in a horizontal direction, and a locking hole for inserting the locking rod is provided on the load assembly; A power supply mechanism, which is arranged on the frame and can supply power to the seat slide rail; The testing mechanism is arranged on the frame and comprises an acceleration sensor for collecting acceleration when the seat slide rail vibrates. The beneficial effects of the present invention are: The load mechanism applies load to the seat rail to simulate the actual use of the seat rail, and the power mechanism supplies power to the seat rail to provide power for the sliding of the seat rail. While the seat rail slides, the acceleration sensor collects the acceleration of the seat rail base when it vibrates to perform noise testing. It can simulate the actual use of the seat rail for fast and realistic noise testing.

[0006] The lifting assembly and the load assembly are connected by a locking assembly. Before and after the test, the lifting assembly and the load assembly are lifted and lowered synchronously. During the test, the lifting assembly and the load assembly are separated, and the load assembly rests on the sliding seat of the seat slide and slides synchronously with the sliding seat of the seat slide, simulating the actual use of the seat slide.

[0007] The acceleration sensor is used to collect the acceleration generated by the vibration when the car seat slides, which can quickly obtain the noise situation and can adapt to the test site with poor sound environment.

[0008] Specifically, the lifting assembly includes a first connecting plate arranged vertically, the locking cylinder is fixed on the first connecting plate, the piston rod of the locking cylinder passes through the first connecting plate and is fixedly connected to an adapter plate, and the adapter plate is fixedly connected to the locking rod. The load assembly includes a second connecting plate arranged vertically, the second connecting plate corresponds to the first connecting plate one by one, the locking hole is provided on the second connecting plate, and the second connecting plate is provided with a clearance groove corresponding to the piston rod of the locking cylinder downwardly from its upper end surface.

[0009] When the piston rod of the locking cylinder is retracted, it can drive the locking rod to be inserted into the locking hole. At this time, the lifting assembly and the load assembly are fixed by the locking rod. At this time, the locking rod and the locking hole will not move due to insufficient air supply of the locking cylinder, causing the load assembly to fall off. When the piston rod of the locking cylinder is extended, it can drive the locking rod to leave the locking hole. At this time, the lifting assembly and the load assembly will not move synchronously. Through this design, the safety of the load assembly during lifting and lowering can be improved.

[0010] Furthermore, the first connecting plate has a slot formed upward from its lower end surface, the slot extending along the length direction of the first connecting plate, and the second connecting plate can be inserted upward into the slot. The arrangement of the slot limits the position of the second connecting plate in the X direction, preventing the second connecting plate from moving in the X direction, thereby improving the stability of the lifting assembly and the load assembly when they are fixedly connected, and preventing the load assembly from falling off when being lifted synchronously with the lifting assembly.

[0011] Specifically, two first connecting plates are arranged at intervals along a first direction in a horizontal plane, the first connecting plates extend along the first direction, and two locking cylinders are fixed to each first connecting plate along a length direction. Because the load assembly is heavy, the stability of the load assembly and the lifting assembly when being fixed can be improved by distributing the locking assemblies in this way.

[0012] The locking hole is a rhombus, and the rhombus has a certain tolerance relative to the round hole. Even if the locking rod is offset, it can still be inserted into the locking hole.

[0013] Specifically, the lifting assembly includes a lifting plate, the first connecting plate is fixed on the lifting plate, and the lifting plate is fixed to the output end of the lifting drive member. At this time, the lifting plate drives all the first connecting plates to rise and fall synchronously.

[0014] The load assembly also includes a load plate fixed to the second connecting plate, a load block is detachably connected to the load plate, and a positioning pin for positioning the load block is provided on the load plate. Load blocks of specified weight and quantity can be placed according to test requirements.

[0015] Furthermore, a conveyor line is provided in the frame, and the carrier moves on the conveyor line to reach directly above the placement plate. The carrier is moved to the inspection station for inspection through the conveyor line without manual handling.

[0016] The rack is provided with a lifting mechanism connected to the placement plate, which is used to lift the placement plate. The lifting mechanism is used to separate the carrier and the conveyor line, and then the test can be carried out. A flat plate is fixed on the rack, and multiple air springs are fixed on the flat plate. A pallet is fixed on the air spring, and the lifting mechanism is set on the pallet. When testing, the air spring is inflated, and the air spring props up the pallet to separate it from the fixed frame. The air spring isolates the pallet from the rack, eliminating the interference of the background noise.

[0017] Furthermore, a leveling assembly for leveling the pallet is provided on the flat plate, and the leveling assembly includes a leveling drive corresponding to the corner of the pallet, the leveling drive is fixed on the flat plate and located above the pallet, and the output shaft of the leveling drive can press the pallet downward. The leveling drive is used to limit the height position of the pallet at the four corners, so that the pallet remains horizontal without tilting, and the load assembly can be accurately placed on the seat rail and exert a uniform force on the seat rail.

[0018] Furthermore, the power supply mechanism also includes a fixing frame fixed on the pallet, to which a mounting plate that can move up and down is slidably connected, a horizontal driving member is arranged on the mounting plate, and a plug is connected to the output end of the horizontal driving member, and the plug can be inserted into the socket on the carrier under the drive of the horizontal driving member.

[0019] Furthermore, the testing mechanism also includes a cross-moving module arranged on the frame, the acceleration sensor is arranged at the output end of the cross-moving module, and the acceleration sensor is driven by the cross-moving module to approach or move away from the seat slide rail.

[0020] The present invention also discloses a method for detecting noise of a car seat slide rail, using the above-mentioned noise detection device, the noise detection method comprises: The carrier is placed on a placement plate, and an air spring is arranged between the placement plate and the frame; The lifting drive member drives the load assembly to move downward until the load assembly abuts against the upper end surface of the seat slide rail; The locking cylinder of the locking assembly drives the locking rod to move until the locking rod is disengaged from the locking hole; The lifting drive member drives the lifting assembly to move upward until the lifting and load assemblies are separated; The test mechanism supplies power to the seat slide, and the sliding seat of the seat slide slides on the carrier; The acceleration sensor collects the real-time acceleration value of the base of the slide rail seat during the sliding process of the slide seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention; Figure 2 is a schematic diagram of the three-dimensional structure of the load mechanism in an embodiment of the present invention; Figure 3 A schematic diagram of a locking assembly locking the first connecting plate and the second connecting plate in an embodiment of the present invention; Figure 4 is a schematic diagram of the three-dimensional structure of the locking assembly in an embodiment of the present invention; Figure 5 is a schematic diagram of a load component in an embodiment of the present invention; Figure 6 is a cross-sectional view of the locking rod when it is not locked in the embodiment of the present invention; Figure 7 It is a structural schematic diagram of the jacking mechanism in an embodiment of the present invention; Figure 8 It is a three-dimensional structural schematic diagram of the testing mechanism in an embodiment of the present invention and a partial enlarged diagram thereof; Fig. 9 This is a schematic diagram of a conveyor line passing through a frame in an embodiment of the present invention; Fig.10 Schematic diagram of the three-dimensional structure of the carrier in an embodiment of the present invention.

[0022] In the figure: 1. Seat slide rail; 11. Sliding seat; 12. Base; 2. Carrier; 21. Socket; 22. Clamping mechanism; 3. Frame; 31. Plate; 311. Leveling drive member; 4. Load mechanism; 41. Lifting drive parts; 42, lifting assembly; 421, first connecting plate; 4211, slot; 4212, second guide sleeve; 422, lifting plate; 423, first guide rod; 43. Locking assembly; 431. Locking cylinder; 432. Locking rod; 433. Adapter plate; 44, load assembly; 441, second connecting plate; 4411, locking hole; 4412, clearance groove; 442, load plate; 4421, positioning pin; 443, load block; 444, positioning block; 5. Placement plate; 51. Air spring; 52. Support plate; 6. Power supply mechanism; 61. Fixing frame; 62. Mounting plate; 63. Horizontal driving member; 64. Plug; 7. Testing mechanism; 71. Acceleration sensor; 72. Cross moving module; 73. Adsorption member; 74. Guide shell; 75. Distance sensor; 8. Conveyor line; 9. Lifting mechanism; 91. Lifting drive member; 92. Second guide rod. DETAILED DESCRIPTION The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0023] The vehicle seat rail noise detection device of the present invention is used for noise detection of the seat rail 1, see the attached Fig.10 As shown, the seat slide 1 is an H-shaped slide, including a base 12 and a sliding seat 11. The sliding seat 11 is located above the base 12. The sliding seat 11 is used to fix the seat body. When the seat slide 1 is powered on, the sliding seat 11 can slide along the base 12. The base 12 is provided with an electric control device (not shown in the figure) for driving the sliding seat 11 to slide.

[0024] The seat rail 1 is fixed on the carrier 2, see the attached Fig.10 As shown, the carrier 2 is provided with a clamping mechanism 22, which is used to fix the seat slide 1 on the carrier 2. The clamping mechanism 22 includes a quick clamp, which can fix the base 12 of the seat slide 1. In this embodiment, the clamping mechanism 22 is a contoured part of the seat slide 1, as long as the seat slide 1 can be fixed on the carrier 2. The carrier 2 is also provided with a socket 21, and the wire of the electric control device is connected to the socket 21. When the socket 21 is powered, the electric control device can drive the sliding seat 11 to slide along the base 12.

[0025] See attached Figure 1As shown, the noise detection device includes a frame 3, a load mechanism 4, a power supply mechanism 6 and a test mechanism 7. The load mechanism 4, the power supply mechanism 6 and the test mechanism 7 are arranged on the frame 3. The load mechanism 4 is used to provide a load for the seat slide 1. Because there is usually someone on the seat, a certain weight load is applied to the sliding seat 11 on the seat slide 1 to simulate the actual use of the seat. The power supply mechanism 6 is used to supply power to the seat slide 1 so that the sliding seat 11 of the seat slide 1 can slide. The test mechanism 7 is used to collect the acceleration value of the seat slide 1 when it vibrates during the load sliding process.

[0026] A placement plate 5 for placing the carrier 2 is provided on the frame 3 , and the carrier 2 is carried on the placement plate 5 . When the carrier 2 is placed on the placement plate 5 , the seat slide rail 1 reaches the inspection station.

[0027] See attached Figure 2 As shown, the load mechanism 4 includes a lifting drive 41 fixed on the frame 3, and the lifting drive 41 drives a lifting assembly 42 to lift and lower. The lifting assembly 42 is connected to a load assembly 44 located directly above the placement plate 5 through a plurality of locking assemblies 43. The load assembly 44 can be lifted and lowered synchronously with the lifting assembly 42 and can be separated from the lifting assembly 42 and placed on the seat slide 1. The load mechanism 4 is provided with a locking assembly 43, so that the lifting assembly 42 and the load assembly 44 can be connected as a whole or separated.

[0028] See attached Figure 3 and attached Figure 4 As shown, the locking assembly 43 includes a locking cylinder 431 fixed to the lifting assembly 42, and the locking cylinder 431 can drive the locking rod 432 to move back and forth in the horizontal direction. Figure 5 and attached Figure 6 As shown, the load assembly 44 is provided with a locking hole 4411 for the locking rod 432 to be inserted. When the locking rod 432 is inserted into the locking hole 4411, the lifting assembly 42 and the load assembly 44 are fixed, and at this time, the lifting assembly 42, the locking assembly 43 and the load assembly 44 are lifted and lowered synchronously. When the locking rod 432 slides out of the locking hole 4411, the lifting assembly 42 and the load assembly 44 can be separated, and at this time, the lifting assembly 42 will not be able to drive the load assembly 44 to lift and lower synchronously.

[0029] The test mechanism 7 is arranged on the frame 3, and the test mechanism 7 includes an acceleration sensor 71 for collecting acceleration when the seat slide 1 vibrates. Because the noise is mainly generated by the vibration when the seat slide 1 slides, the vibration will cause the base 12 to vibrate slightly, so the acceleration collected by the acceleration sensor 71 can understand the noise situation.

[0030] In this embodiment, when the seat slide 1 needs to be inspected, a load is applied to the seat slide 1 through the load mechanism 4. Since the lifting assembly 42 and the load assembly 44 are connected by the locking assembly 43, the lifting assembly 42 and the load assembly 44 are synchronously lifted and lowered before and after the inspection. During the test, the lifting assembly 42 and the load assembly 44 are separated, and the load assembly 44 rests on the sliding seat 11 of the seat slide 1 and slides synchronously with the sliding seat 11 of the seat slide 1, simulating the actual use of the seat slide 1. At the same time, the seat slide 1 is powered by the power supply mechanism 6 to provide power for the sliding of the seat slide 1. While the seat slide 1 slides, the acceleration of the base 12 of the seat slide 1 during vibration is collected by the acceleration sensor 71 to perform noise detection. Through the detection device in this embodiment, the actual use of the seat slide 1 can be simulated, which greatly improves the detection efficiency and testing convenience.

[0031] See attached Figure 2 , Attachment Figure 3 , Attachment Figure 4 and attached Figure 5 As shown, the lifting assembly 42 includes a vertically arranged first connecting plate 421, a locking cylinder 431 is fixed on the first connecting plate 421, a piston rod of the locking cylinder 431 passes through the first connecting plate 421 and is fixedly connected with an adapter plate 433, and the adapter plate 433 is fixedly connected with the locking rod 432. The load assembly 44 includes a vertically arranged second connecting plate 441, the second connecting plate 441 corresponds to the first connecting plate 421 one by one, and a locking hole 4411 is provided on the second connecting plate 441. The first connecting plate 421 and the second connecting plate 441 can be butted, at which time the locking rod 432 can be inserted into the locking hole 4411, and the first connecting plate 421 and the second connecting plate 441 are fixed.

[0032] In this embodiment, the piston rod of the locking cylinder 431 is not directly inserted into the locking hole 4411 or directly connected to the locking rod 432, but is connected to the locking rod 432 through the adapter plate 433 located on the other side of the first connecting plate 421. When the piston rod of the locking cylinder 431 is retracted, it can drive the locking rod 432 to be inserted into the locking hole 4411, and at this time, the lifting assembly 42 and the load assembly 44 are fixed by the locking rod 432. Figure 6As shown, when the piston rod of the locking cylinder 431 extends, it can drive the locking rod 432 to leave the locking hole 4411, and at this time, the lifting assembly 42 and the load assembly 44 will not move synchronously. Through such a design, the safety of the load assembly 44 during lifting and lowering can be improved. Because when the locking cylinder 431 is not ventilated, the piston rod is in a retracted state, and at this time, the stability and safety of the locking cylinder 431 are high. In this state, the locking rod 432 is driven to insert into the locking hole 4411, and the stability and safety of the locking rod 432 are also high. At this time, the locking rod 432 and the locking hole 4411 will not cause the locking rod 432 to move due to insufficient air supply of the locking cylinder 431, causing the load assembly 44 to fall off accidentally.

[0033] See attached Figure 5 As shown, the second connecting plate 441 is provided with a clearance groove 4412 corresponding to the piston rod of the locking cylinder from its upper end surface downwardly, because the piston rod needs to pass through the second connecting plate 441 to connect to the adapter plate 433. When the locking rod 432 and the locking hole 4411 are disengaged, the lifting assembly 42 needs to move upward to separate from the load assembly 44. Therefore, a clearance groove 4412 needs to be opened to allow the piston rod to pass upward through the second adapter plate 433 to separate from the load assembly 44.

[0034] In one embodiment, the piston rod of the locking cylinder 431 serves as the locking rod 432 and is directly inserted into the locking hole 4411 .

[0035] See attached Figure 3 and attached Figure 4 As shown, the first connecting plate 421 is provided with a slot 4211 upwardly from its lower end surface, and the slot 4211 extends along the length direction of the first connecting plate 421, and the second connecting plate 441 can be inserted upward into the slot 4211. The slot 4211 includes two side walls spaced apart along the first direction (X direction), and the second connecting plate 441 can be limited between the two side walls. The setting of the slot 4211 limits the position of the second connecting plate 441 in the X direction, preventing the second connecting plate 441 from moving in the X direction, thereby improving the stability of the lifting assembly 42 and the load assembly 44 when they are fixedly connected, and preventing the load assembly 44 from falling off when it is lifted synchronously with the lifting assembly 42.

[0036] See attached Figure 5 As shown, the locking hole 4411 is a rhombus, the diagonal length of the rhombus is greater than the diameter of the locking rod, and the rhombus has a certain tolerance relative to the round hole, so the locking rod 432 can be inserted into the locking hole 4411 even if it is offset. At the same time, after the load assembly 44 abuts against the seat slide 1, the lifting assembly 42 can still move down a certain distance, that is, the locking rod 432 moves down a certain distance in the locking hole 4411, which facilitates the separation of the locking rod 432 and the locking hole 4411.

[0037] In one embodiment, under the action of gravity of the load assembly 44, the side wall below the locking hole 4411 can abut against the locking rod 432, and a pressure sensor can be set on the side wall below the locking hole 4411. When there is no pressure on the pressure sensor, it means that the load assembly 44 has other supports, and the locking rod 432 can slide out of the locking hole 4411.

[0038] Two first connecting plates 421 are arranged at intervals along the first direction in the horizontal plane. The first connecting plates 421 extend along the first direction, and two locking cylinders 431 are fixed to each first connecting plate 421 along the length direction. At this time, there are four locking cylinders 431 distributed in a rectangular shape, which can more stably fix the load assembly 44. Because the load assembly 44 is heavy, the stability of the load assembly 44 and the lifting assembly 42 when fixed can be improved by such a distribution of locking assemblies 43. It can be understood that the more first connecting plates 421 and locking cylinders 431 are arranged, the more stable the fixation of the load assembly 44 is, but at the same time, the cost will increase.

[0039] Two locking rods 432 are fixed on one adapter plate 433, and the two locking rods 432 are located on both sides of the corresponding locking cylinder 431. At this time, one locking cylinder 431 drives the two locking rods 432 to move synchronously to improve the stability of the connection during locking. A second guide sleeve 4212 is provided on the first connecting plate 421, and the locking rod 432 slides along the second guide sleeve 4212.

[0040] See attached Figure 2 As shown, the lifting assembly 42 also includes a lifting plate 422, a first connecting plate 421 is fixed on the lifting plate 422, and the lifting plate 422 is fixed to the output end of the lifting drive 41. The lifting drive 41 directly drives the lifting plate 422 to rise and fall, and the lifting plate 422 drives the multiple first connecting plates 421 to rise and fall synchronously. Multiple first guide rods 423 are fixed on the lifting plate 422, and a first guide sleeve for guiding the first guide rods 423 is fixed on the frame 3. Through the cooperation of the first guide rods 423 and the first guide sleeve, the lifting stability of the lifting assembly 42 and the load assembly 44 is improved.

[0041] See attached Figure 5 As shown, the load assembly 44 also includes a load plate 442 fixed to the second connecting plate 441, and a load block 443 is detachably connected to the load plate 442. The load plate 442 is provided with a positioning pin 4421 for positioning the load block 443. Load blocks 443 of different weights and different numbers can be placed according to test requirements. The upper end surface of the load plate 442 is the placement surface of the load block 443, and the second connecting plate 441 is fixed to the upper end surface of the load plate 442. The load block 443 is placed on the load plate 442 by its own gravity.

[0042] In order to improve the stability of the load component 44 against the seat slide 1, a positioning block 444 is provided on the lower end surface of the load plate 442. The positioning block 444 is a contoured part that matches the shape of the sliding seat 11 of the seat slide 1. Part of the sliding seat 11 can be embedded in the positioning block 444, thereby improving the stability of the load component 44 placed on the seat slide 1.

[0043] The seat rail 1 passes through multiple process stations during the processing, wherein the detection device is located at the detection station, and the carrier 2 is transported on the conveyor line 8 and can be moved to the top of the placement plate 5 under the conveyor. Fig. 9 As shown, the conveyor line 8 passes through the frame 3 and conveys the carrier 2 along the second direction (Y direction). The conveyor line 8 includes two conveyor chains separated and distributed along the X direction, and the carrier 2 is carried on the conveyor chains for transmission.

[0044] See attached Figure 7 As shown, a lifting mechanism 9 connected to the placement plate 5 is provided on the frame 3, and the lifting mechanism 9 is used to lift the placement plate 5. When the carrier 2 reaches the top of the placement plate 5, the lifting mechanism 9 lifts the placement plate 5 upward, so that the carrier 2 can be separated from the conveyor line 8 upward. After the inspection is completed, the lifting mechanism 9 drives the placement plate 5 and the carrier 2 to move downward until the carrier 2 is carried on the conveyor line 8, and the conveyor line 8 transports the carrier 2 that has completed the inspection to the next station.

[0045] The lifting mechanism 9 is a prior art, including a lifting driving member 91, a second guide rod 92, etc., and the lifting driving member 91 drives the placement plate 5 to rise and fall. The placement plate 5 is located between two conveying chains of the conveyor line. The lifting driving member 91 is fixed on the support plate 52.

[0046] In one embodiment, a flat plate 31 is fixed on the frame 3 , a plurality of air springs 51 are fixed on the flat plate 31 , a supporting plate 52 is fixed on the air springs 51 , and the lifting mechanism 9 is disposed on the supporting plate 52 .

[0047] In this embodiment, the noise test is performed by collecting the acceleration value of the vibration when the seat slide rail 1 slides, so it is necessary to eliminate the interference of other vibrations on the seat slide rail 1. An air spring 51 is provided. When testing is required, the air spring 51 is inflated to separate the support plate 52 (that is, the carrier 2) and the frame 3, and the carrier 2 and the frame 3 are not in rigid contact. The air spring 51 isolates the support plate 52 from the frame 3, eliminating the interference of the background noise.

[0048] Because the parallelism of the support plate 52 will affect the parallelism of the placement plate 5 and the carrier 2, the seat rail 1 on the carrier 2 can only be placed horizontally when the carrier 2 is placed horizontally, and at this time the load assembly 44 can be accurately placed on the seat rail 1 and exert a uniform force on the seat rail 1. However, a slight difference in the inflation amount of the air spring 51 may cause the support plate 52 to tilt, so a leveling assembly for leveling the support plate 52 is also provided on the flat plate 31.

[0049] The leveling assembly includes a leveling drive member 311 corresponding to the corner of the pallet 52. The leveling drive member 311 is fixed on the flat plate 31 and is located above the pallet 52. The output shaft of the leveling drive member 311 can press the pallet 52 downward. The pallet 52 is square, and a pressing surface at the same height is defined by the leveling drive member 311 at the four corners. The height position of the pallet 52 is defined by the pressing surface and the pallet 52 is pressed downward.

[0050] See attached Figure 7 As shown, the power supply mechanism 6 includes a fixing frame 61 fixed on the support plate 52, and a mounting plate 62 that can move up and down is slidably connected to the fixing frame 61. A horizontal driving member 63 is arranged on the mounting plate 62, and a plug 64 is connected to the output end of the horizontal driving member 63. The plug 64 can be inserted into the socket 21 on the carrier 2 under the drive of the horizontal driving member 63.

[0051] The mounting plate 62 is fixed to the fixing frame 61 by a clamp. By adjusting the height position of the mounting plate 62, the height position of the plug 64 is adjusted so that the plug 64 can be located at a height position corresponding to the socket 21 on the carrier 2. The horizontal driving member 63 drives the plug 64 to insert into or leave the socket 21. When the load assembly 44 is placed on the seat slide 1, the horizontal driving member 63 drives the plug 64 to insert into the socket 21. The plug 64 is connected to an external power supply unit, which supplies power to the seat slide 1. After the test is completed, the horizontal driving member 63 drives the plug 64 to separate from the socket 21, and the carrier 2 can continue to move.

[0052] In one embodiment, the power supply mechanism 6 is located on the side of the placement plate 5X, and the power supply mechanism 6 will not interfere with the transmission of the conveyor line.

[0053] In one embodiment, see the attached Figure 8 As shown, the test mechanism 7 also includes a cross-moving module 72 arranged on the frame 3, and the acceleration sensor 71 is arranged at the output end of the cross-moving module 72. The acceleration sensor 71 is driven by the cross-moving module 72 to move closer to or farther from the seat slide 1. The cross-moving module can drive the acceleration sensor 71 to move along the cross in the Z direction and the Y direction. When measurement is required, the cross-moving module 72 drives the acceleration sensor 71 to fit on the base 12 of the seat slide 1. The acceleration sensor 71 can move synchronously when the base 12 vibrates, and collect the acceleration of the base 12 when it vibrates.

[0054] The acceleration sensor 71 is fixed on an adsorption member 73, which can be adsorbed on the base 12. The adsorption member 73 is a magnet, and a guide shell 74 is connected to the outer shell of the magnet. The magnet can move in the guide shell 74. The guide shell 74 is a plastic part and is fixed on the cross moving module 72. When the magnet is adsorbed on the base 12, the magnet does not reach the limit position and can move back and forth in the guide shell 74. When the base 12 vibrates, it drives the magnet of the base 12 to move back and forth. The acceleration sensor 71 collects acceleration in this process.

[0055] In one embodiment, see the attached Figure 7 As shown, the testing mechanism further includes a distance sensor 75 , which is fixed on the flat plate 31 . The distance sensor 75 is used to collect the sliding distance of the sliding seat 11 of the seat slide rail 1 .

[0056] In one embodiment, the present invention further discloses a method for detecting noise of a car seat rail, using the above-mentioned noise detection device, the noise detection method comprises: Step 1: Place the carrier 2 on the placement plate 5 , and an air spring 51 is provided between the placement plate 5 and the frame 3 .

[0057] At this time, the air spring 51 is inflated to separate the placement plate 5 and the frame 3 to avoid resonance interference.

[0058] Step 2: The lifting drive 41 drives the load assembly 44 to move downward until the load assembly 44 abuts against the upper end surface of the seat slide 1. In this process, the load assembly 44 and the lifting assembly 42 are fixed by the locking assembly 43, and the load assembly 44 and the lifting assembly 42 move synchronously. At this time, the load assembly 44 has been placed on the sliding seat 11 of the seat slide 1, applying pressure to the seat slide 1.

[0059] Step 3: The locking cylinder 431 of the locking assembly 43 drives the locking rod 432 to move until the locking rod 432 is separated from the locking hole 4411. At this time, the load assembly 44 and the lifting assembly 42 are unlocked and are no longer fixed.

[0060] Step 3: The lifting drive 41 drives the lifting assembly 42 to move upward until the lifting assembly 42 and the load assembly 44 are separated. The lifting assembly 42 can be moved to the initial position or below the initial position. As long as the lifting assembly 42 and the load assembly 44 are separated, the lifting assembly 42 will not interfere with the movement of the load assembly 44.

[0061] Step 4: The test mechanism 7 supplies power to the seat rail 1, and the sliding seat 11 of the seat rail 1 slides on the carrier 2. The plug 64 of the test mechanism 7 is inserted into the socket 21 on the carrier 2, and the seat rail 1 is powered and can slide.

[0062] Step 4: The acceleration sensor 71 collects the real-time acceleration value of the base 12 of the slide rail seat during the sliding process of the sliding seat 11. The base 12 does not move, and the cross-moving module 72 adjusts the position of the acceleration sensor 71 until the adsorption member 73 fixed to the acceleration sensor 71 is adsorbed on the base 12. At this time, when the base 12 vibrates, it will drive the adsorption member 73 to vibrate synchronously. The acceleration sensor 71 collects the acceleration value in this process to perform noise detection.

[0063] After the test is completed, the lifting drive 41 drives the load assembly 44 to move downward until the locking rod 432 is aligned with the locking hole 4411, and the locking cylinder 431 drives the locking rod 432 to insert into the locking hole 4411, and the lifting drive drives the load assembly to move upward and reset to separate from the seat slide rail.

[0064] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle seat rail noise detection device, used for noise detection of a seat rail, wherein the seat rail is fixed on a carrier, and is characterized in that: The noise detection device comprises: A frame, wherein a placement plate is provided on the frame for placing the carrier; A load mechanism, wherein the load mechanism comprises a lifting drive member fixed on the frame, the lifting drive member drives a lifting assembly to lift, the lifting assembly is connected to a load assembly located directly above the placement plate through a plurality of locking assemblies, the load assembly can be lifted and lowered synchronously with the lifting assembly and can be separated from the lifting assembly and placed on the seat slide rail, the locking assembly comprises a locking cylinder fixed on the lifting assembly, the locking cylinder can drive a locking rod to reciprocate in a horizontal direction, and a locking hole for inserting the locking rod is provided on the load assembly; A power supply mechanism, which is arranged on the frame and can supply power to the seat rail; A testing mechanism is arranged on a frame and comprises an acceleration sensor for collecting acceleration when the seat slide rail vibrates.

2. The vehicle seat rail noise detection device according to claim 1, characterized in that: The lifting assembly comprises a first connecting plate arranged vertically, the locking cylinder is fixed on the first connecting plate, a piston rod of the locking cylinder passes through the first connecting plate and is fixedly connected to an adapter plate, and the adapter plate is fixedly connected to the locking rod; The load assembly includes a second connecting plate arranged vertically, the second connecting plate corresponds to the first connecting plate one by one, the locking hole is provided on the second connecting plate, and the second connecting plate is provided with a yield groove corresponding to the piston rod of the locking cylinder downward from its upper end surface.

3. The vehicle seat rail noise detection device according to claim 2, characterized in that: The first connecting plate is provided with a slot upwardly from its lower end surface, the slot extending along the length direction of the first connecting plate, and the second connecting plate can be inserted upwardly into the slot.

4. The vehicle seat rail noise detection device according to claim 2, characterized in that: Two first connecting plates are arranged at intervals along a first direction in a horizontal plane. The first connecting plates extend along the first direction. Two locking cylinders are fixed to each of the first connecting plates along the length direction. The locking holes are rhombus-shaped.

5. The vehicle seat rail noise detection device according to claim 4, characterized in that: The lifting assembly comprises a lifting plate, the first connecting plate is fixed on the lifting plate, and the lifting plate is fixed on the output end of the lifting driving member; The load assembly further comprises a load plate fixed to the second connecting plate, a load block is detachably connected to the load plate, and a positioning pin for positioning the load block is arranged on the load plate.

6. The vehicle seat rail noise detection device according to any one of claims 1 to 5, characterized in that: A conveyor line is provided in the frame, and the carrier moves on the conveyor line to reach directly above the placement plate; The frame is provided with a lifting mechanism connected with the placement plate, the lifting mechanism is used to lift the placement plate, a flat plate is fixed on the frame, a plurality of air springs are fixed on the flat plate, a support plate is fixed on the air spring, and the lifting mechanism is arranged on the support plate.

7. The vehicle seat rail noise detection device according to claim 6, characterized in that: The flat plate is provided with a leveling assembly for leveling the pallet, the leveling assembly includes a leveling drive corresponding to the corner of the pallet, the leveling drive is fixed on the flat plate and located above the pallet, and the output shaft of the leveling drive can press the pallet downward.

8. The vehicle seat rail noise detection device according to claim 6, characterized in that: The power supply mechanism includes a fixing frame fixed on the support plate, a mounting plate which is slidably connected to the fixing frame and can move up and down, a horizontal driving member is arranged on the mounting plate, a plug is connected to the output end of the horizontal driving member, and the plug can be inserted into the socket on the carrier under the drive of the horizontal driving member.

9. The vehicle seat rail noise detection device according to claim 1, characterized in that: The testing mechanism further comprises a cross moving module arranged on a frame, the acceleration sensor is arranged at an output end of the cross moving module, and the acceleration sensor approaches or moves away from the seat slide rail under the driving of the cross moving module.

10. A method for detecting noise of a car seat rail, characterized in that: Using the noise detection device according to any one of claims 1 to 9, the noise detection method comprises: Placing the carrier on the placement plate, wherein an air spring is provided between the placement plate and the frame; The lifting drive member drives the load assembly to move downward until the load assembly abuts against the upper end surface of the seat slide rail; The locking cylinder of the locking assembly drives the locking rod to move until the locking rod is disengaged from the locking hole; The lifting drive member drives the lifting assembly to move upward until the lifting and load assemblies are separated; The testing mechanism supplies power to the seat rail, and the sliding seat of the seat rail slides on the carrier; The acceleration sensor collects the real-time acceleration value of the base of the slide rail seat during the sliding process of the sliding seat.

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