A noise detection device for clock springs

Abstract

The present invention provides a noise detection device for a clock spring, which belongs to the field of mechanical technology and solves the problem that the existing clock spring noise detection device has poor detection effect. The noise detection device for the clock spring comprises: a sealed chamber, in which a frame is installed, the frame has a workbench and a microphone for collecting sound signals is movably installed on the workbench; a positioning frame, which is tiltedly installed on the workbench, and a rotating shaft is provided through the positioning frame, one end of the rotating shaft is fixedly connected to a motor, and the other end is fixedly connected to a clock spring, and the above-mentioned microphone is arranged close to the clock spring; a controller, which is fixedly arranged outside the sealed chamber and electrically connected to the motor through a cable; a computer, which is arranged outside the sealed chamber, and the computer is electrically connected to the microphone and the controller respectively, and the computer drives the motor to start or stop through the controller, and the above-mentioned microphone can transmit sound signals to the computer. The present invention has the characteristics of good detection effect.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology and relates to a noise detection device for a clock spring. Background Art

[0002] Flexible flat cables, also known as flexible flat cables, are extremely flexible, small in size, have good heat dissipation performance, and are flexible and convenient to connect. The cables can be moved, bent, and twisted without damaging the wires, can conform to different shapes and special package sizes, and can withstand millions of dynamic bends. They are well suited for continuous or periodic motion internal connection systems and become part of the final product function.

[0003] The interior of a modern car is often a closed space, and the noise inside the car is increasingly becoming an important factor in measuring the overall performance of the car. Due to the rotation of the steering wheel, the clock spring needs to continuously rotate during use, which will inevitably produce noise in the process. Therefore, after the clock spring is produced and its performance is tested, it is also necessary to conduct noise testing.

[0004] In existing production, it is not common to detect noise during the rotation of clock springs. The equipment used for detection is difficult to collect sound and is easily affected by additional redundant sounds, which often fails to achieve the ideal state of noise detection during the rotation of clock springs.

[0005] In summary, in order to solve the deficiencies of the existing clock spring noise detection equipment, the present invention designs a clock spring noise detection equipment with a simple structure and good detection effect. Summary of the invention

[0006] In order to solve the problems existing in the prior art, the present invention provides a noise detection device for a clock spring with a simple structure and good detection effect.

[0007] The object of the present invention can be achieved by the following technical solution: A noise detection device for a clock spring, comprising:

[0008] A sealed room, inside which a frame is installed, the frame has a workbench and a microphone for collecting sound signals is movably installed on the workbench;

[0009] The positioning frame is tiltedly mounted on the workbench, a rotating shaft is provided through the positioning frame, a motor is fixedly connected to one end of the rotating shaft, and a clock spring is fixedly connected to the other end, and the microphone is arranged close to the clock spring;

[0010] A controller is fixedly arranged outside the sealed chamber and electrically connected to the motor through a cable;

[0011] The computer is arranged outside the sealed room and is electrically connected to the microphone and the controller respectively. The computer drives the motor to start or stop through the controller, and the microphone can transmit the sound signal to the computer.

[0012] As a further improvement of the present case, the positioning frame includes an upper plate and a lower plate arranged in parallel, the two ends of the two plates are respectively connected by a front baffle and a rear baffle, the front baffle is covered with a positioning plate and the clock spring is located on the positioning plate, one end of the rotating shaft passes through the front baffle, the positioning plate, and the clock spring in sequence and is sleeved with a positioning block, and the other end passes through the rear baffle and is fixedly connected to the motor.

[0013] As another improvement of the present case, the clock spring is composed of a surface layer, an interlayer and a bottom layer which are arranged in sequence. The surface layer is fixedly connected to the bottom layer and can rotate relative to the interlayer. The surface layer part protrudes outward to form a protrusion, and the positioning block is provided with an opening arranged corresponding to the protrusion.

[0014] As a further improvement of the present invention, a number of lugs are evenly distributed around the interlayer, each lug is provided with a mounting hole, and a positioning column corresponding to each mounting hole is fixed on the positioning plate.

[0015] As another improvement of the present case, a number of pressure seats corresponding to the positioning columns are installed on the positioning plate, and each pressure seat is provided with a pressure head and a handle. The handle is hingedly connected to the pressure seat through a connecting rod, and the pressure head is hingedly connected to the handle and the pressure seat respectively. Rotating the handle can drive the pressure head to rest against the corresponding positioning column.

[0016] As a further improvement of the present invention, a support rod is vertically installed on the workbench and a horizontally arranged support arm is sleeved on the support rod, and the above-mentioned microphone is movably connected to one end of the support arm away from the support rod.

[0017] As another improvement of the present case, a slide rail is fixedly provided on one side of the workbench and a slide seat is covered on the slide rail. The above-mentioned support rod is passed through the slide seat. A scale bar is provided on the workbench near the slide rail. An indicator needle corresponding to the scale adjustment is fixed on the slide seat. When the slide seat moves along the slide rail, it can drive the microphone closer to or away from the clock spring.

[0018] As a further improvement of the present invention, two pillars are installed between the two plates, and the two pillars are arranged on both sides of the rotating shaft. Two limit blocks are also sleeved on the rotating shaft, and each limit block is fixedly connected to the lower plate.

[0019] As a further improvement of the present invention, an outer cover is provided on the outside of the motor, and the outer cover is fixedly connected to the rear baffle.

[0020] As a further improvement of the present invention, a through hole is provided on the sealing chamber for the cable to pass through, the through hole is filled with sponge and rubber plugs are provided at both ends of the through hole.

[0021] Compared with the prior art, the present invention has a reasonable structure. The motor drives the rotating shaft to drive the clock spring to rotate, and a microphone is used to collect the sound signal generated during the rotation process, which is then fed back to the computer for calculation and detection to achieve the purpose of noise detection. The settings of the positioning frame, positioning plate and pressure seat can ensure that the clock spring is positioned stably and accurately, which is convenient for noise detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 yes Figure 1 Schematic diagram of the internal structure.

[0024] Figure 3 yes Figure 2 Schematic diagram of part of the structure.

[0025] Figure 4 yes Figure 3 Schematic diagram of part of the structure.

[0026] Figure 5 It is a structural schematic diagram of the pressure seat in the present invention.

[0027] In the figure, 10, sealing chamber; 11, frame; 12, workbench; 20, positioning frame; 21, upper plate; 22, lower plate; 23, front baffle; 24, rear baffle; 25, rotating shaft; 26, positioning plate; 261, positioning column; 27, positioning block; 271, opening; 28, pillar; 29, limit block; 30, microphone; 31, slide rail; 32, slide seat; 33, support rod; 34, support arm; 35, scale bar; 36, indicator needle; 40, clock spring; 41, surface layer; 411, convex block; 42, interlayer; 421, lug; 422, mounting hole; 43, bottom layer; 51, motor; 52, outer cover; 60, pressure seat; 61, handle; 62, connecting rod; 63, pressure head; 70, controller; 80, computer. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below in conjunction with the embodiments and drawings.

[0029] like Figures 1 to 4 As shown, the noise detection device of the clock spring includes:

[0030] A sealed chamber 10 is provided with a frame 11 installed therein, the frame 11 has a workbench 12 and a microphone 30 for collecting sound signals is movably installed on the workbench 12;

[0031] The positioning frame 20 is tiltedly mounted on the workbench 12. A rotating shaft 25 is provided through the positioning frame 20. A motor 51 is fixedly connected to one end of the rotating shaft 25, and a clock spring 40 is fixedly connected to the other end. The microphone 30 is provided close to the clock spring 40.

[0032] The controller 70 is fixedly mounted outside the sealed chamber 10 and is electrically connected to the motor 51 via a cable;

[0033] The computer 80 is arranged outside the sealed chamber 10 , and is electrically connected to the microphone 30 and the controller 70 , respectively. The computer 80 drives the motor 51 to start or stop through the controller 70 , and the microphone 30 can transmit the sound signal to the computer 80 .

[0034] The noise inside the car is becoming an increasingly important factor in measuring the overall performance of the car. Due to the rotation of the steering wheel, the clock spring 40 needs to continuously rotate during use, which will inevitably produce sound, and noise detection is required.

[0035] In the existing production, it is not common to detect the noise during the rotation of the clock spring 40, and the detection equipment is difficult to collect the sound and is easily affected by external sounds, and often cannot achieve the ideal state of noise detection during the rotation of the clock spring 40.

[0036] To this end, the present invention designs a noise detection device for a clock spring, which drives the rotating shaft 25 through the motor 51 to drive the clock spring 40 to rotate, and uses the microphone 30 to collect the sound signal generated during the rotation process, which is then fed back to the computer 80 for calculation and detection to achieve the purpose of noise detection.

[0037] It is preferred to set up a sealed chamber 10 for noise detection to avoid the influence of external sounds on the detection results. Specifically, the clock spring 40 is stably positioned by the positioning frame 20, and the computer 80 drives the motor 51 through the controller 70 to drive the shaft 25 to rotate, thereby realizing the rotation of the clock spring 40. At the same time, the microphone 30 transmits the sound signal collected during the rotation to the computer 80. Since the microphone 30 only collects some current signals of the sound, it is preferred to convert the sound signal into a specific decibel value in the computer 80 system, thereby realizing the detection of the noise generated by the rotation of the clock spring 40.

[0038] Preferably, a through hole (not shown in the figure) is opened on the sealed chamber 10 for the cable to pass through, the through hole is filled with sponge (not shown in the figure) and rubber plugs (not shown in the figure) are arranged at both ends of the through hole.

[0039] To ensure signal transmission, a through hole is opened on the sealed chamber 10 for the cable to enter and exit. The through hole is preferably filled with sponge, and rubber plugs are set at both ends of the through hole. The rubber plugs have a certain elasticity and can clamp the cable, thereby minimizing the impact of external sound on internal detection.

[0040] Preferably, the positioning frame 20 includes an upper plate 21 and a lower plate 22 which are arranged in parallel, and the two ends of the two plates are respectively connected by a front baffle 23 and a rear baffle 24, the front baffle 23 is covered with a positioning plate 26 and the clock spring 40 is located on the positioning plate 26, one end of the rotating shaft 25 passes through the front baffle 23, the positioning plate 26, and the clock spring 40 in sequence and is sleeved with a positioning block 27, and the other end passes through the rear baffle 24 and is fixedly connected to the motor 51.

[0041] The positioning frame 20 is formed by an upper plate 21, a lower plate 22, a front baffle 23 and a rear baffle 24. Preferably, a clock spring 40 is installed on the front baffle 23 along with the positioning plate 26. The rotating shaft 25 passes through the positioning plate 26 and the clock spring 40 and cooperates with the positioning block 27 to fix the clock spring 40 on the rotating shaft 25. When the motor 51 drives the rotating shaft 25 to rotate, the clock spring 40 can rotate with the rotating shaft 25.

[0042] The inclined setting of the positioning frame 20 here is beneficial to simulating the working state of the clock spring 40 installed in the steering wheel, so that the noise detection is more in line with the actual situation.

[0043] Furthermore, the clock spring 40 is composed of a surface layer 41, an interlayer 42 and a bottom layer 43 which are arranged in sequence. The surface layer 41 is fixedly connected to the bottom layer 43 and can rotate relative to the interlayer 42. A portion of the surface layer 41 protrudes outward to form a protrusion 411, and an opening 271 corresponding to the protrusion 411 is opened on the positioning block 27.

[0044] Specifically, the surface layer 41 of the clock spring 40 is engaged with the opening 271 on the positioning block 27 through the protrusion 411, and is fixedly connected to the rotating shaft 25 through the positioning block 27. Since the surface layer 41 is fixedly connected to the bottom layer 43 and can rotate relative to the interlayer 42, when the rotating shaft 25 drives the clock spring 40 to rotate, it actually drives the surface layer 41 and the bottom layer 43 to rotate.

[0045] Preferably, a plurality of lugs 421 are evenly distributed around the interlayer 42 , each lug 421 is provided with a mounting hole 422 , and a positioning column 261 corresponding to each mounting hole 422 is fixedly disposed on the positioning plate 26 .

[0046] The interlayer 42 cooperates with the positioning posts 261 on the positioning plate 26 through the lugs 421 to achieve positioning and avoid rotation with the surface layer 41.

[0047] like Figure 3 and Figure 5As shown, further, a plurality of pressure seats 60 corresponding to the positioning columns 261 are installed on the positioning plate 26, and each pressure seat 60 is provided with a pressure head 63 and a handle 61. The handle 61 is hingedly connected to the pressure seat 60 through a connecting rod 62, and the pressure head 63 is hingedly connected to the handle 61 and the pressure seat 60 respectively. Rotating the handle 61 can drive the pressure head 63 to rest against the corresponding positioning column 261.

[0048] To further ensure that the interlayer 42 is fixed on the positioning plate 26 , in this embodiment, a plurality of pressing seats 60 are preferably provided on the positioning plate 26 , and the actual number of the pressing seats 60 corresponds to the number of the lugs 421 .

[0049] During actual installation, by turning the handle 61, the connecting rod 62 and the pressure head 63 are driven to rotate around the pressure seat 60, so that the pressure head 63 is pressed into the lug 421 and can rest on the positioning column 261, further ensuring that the interlayer 42 is firmly fixed on the positioning plate 26, which is conducive to the rotation shaft 25 to drive the surface layer 41 and the bottom layer 43 to rotate.

[0050] Preferably, a support rod 33 is vertically mounted on the workbench 12 and a horizontally arranged support arm 34 is sleeved on the support rod 33 , and the microphone 30 is movably connected to one end of the support arm 34 away from the support rod 33 .

[0051] The microphone 30 can move up and down along the support arm 34 along the support rod 33. During installation, the support arm 34 can be fixed at a suitable height according to the position of the clock spring 40. The microphone 30 is actually connected to the support arm 34 through a movable block. The position of the microphone 30 in the vertical plane can be adjusted, that is, the microphone 30 can rotate around the support arm 34 and adjust the angle to select a suitable position to align with the clock spring 40, which is conducive to collecting sound signals.

[0052] Furthermore, a slide rail 31 is fixedly provided on one side of the workbench 12 and a slide seat 32 is covered on the slide rail 31. The above-mentioned support rod 33 is passed through the slide seat 32. A scale bar 35 is provided on the workbench 12 near the slide rail 31. An indicator needle 36 corresponding to the scale adjustment is fixedly provided on the slide seat 32. When the slide seat 32 moves along the slide rail 31, it can drive the microphone 30 to approach or move away from the clock spring 40.

[0053] In this embodiment, it is preferred to set a slide rail 31 and a slide seat 32 that work together on the workbench 12. The slide seat 32 drives the support rod 33 and the microphone 30 to move along the slide rail 31, thereby changing the distance between the microphone 30 and the clock spring 40. Furthermore, by setting the indicator needle 36 and the scale bar 35, the sound generated within the range of different distances from the clock spring 40 can be collected, and the noise generated at different distances can be detected.

[0054] Preferably, two pillars 28 are installed between the two plates, and the two pillars 28 are arranged on both sides of the rotating shaft 25 . The rotating shaft 25 is also sleeved with two limit blocks 29 , and each limit block 29 is fixedly connected to the lower plate 22 .

[0055] The setting of the support 28 can enhance the structural strength of the positioning frame 20. The rotating shaft 25 actually passes through two limit blocks 29. The setting of the limit blocks 29 can prevent the rotating shaft 25 from shaking during the rotation process and causing the clock spring 40 to rotate in a deviation, which is beneficial to ensure stable rotation and facilitate noise detection.

[0056] Furthermore, the motor 51 is provided with a cover 52, and the cover 52 is fixedly connected to the rear baffle 24. To further avoid the influence of additional sound on the detection result, in this embodiment, the motor 51 is provided with a cover 52, and the cover 52 is preferably fixed to the rear baffle 24.

[0057] The noise detection device of the clock spring has a reasonable structure. The motor 51 drives the rotating shaft 25 to drive the clock spring 40 to rotate. The microphone 30 is used to collect the sound signal generated during the rotation process, and then the sound signal is fed back to the computer 80 for calculation and detection to achieve the purpose of noise detection. The arrangement of the positioning frame 20, the positioning plate 26 and the pressure seat 60 can ensure that the positioning of the clock spring 40 is stable and accurate, which is convenient for noise detection.

[0058] The preferred embodiments of the present invention are described herein, but the protection scope of the present invention is not limited thereto. Any modification or supplement or replacement of the specific embodiments described by those skilled in the art shall be included in the protection scope of the present invention.

Claims

1. A noise detection device for a clock spring, characterized in that: include: A sealed room, inside which a frame is installed, the frame has a workbench and a microphone for collecting sound signals is movably installed on the workbench; The positioning frame is tiltedly mounted on the workbench, a rotating shaft is provided through the positioning frame, a motor is fixedly connected to one end of the rotating shaft, and a clock spring is fixedly connected to the other end, and the microphone is arranged close to the clock spring; A controller is fixedly arranged outside the sealed chamber and electrically connected to the motor through a cable; A computer is arranged outside the sealed room, and the computer is electrically connected to the microphone and the controller respectively. The computer is started or stopped by driving the motor through the controller, and the microphone can transmit the sound signal to the computer; The positioning frame comprises an upper plate and a lower plate arranged in parallel, the two ends of the two plates are connected by a front baffle and a rear baffle respectively, the front baffle is covered with a positioning plate and the clock spring is located on the positioning plate, one end of the rotating shaft passes through the front baffle, the positioning plate, the clock spring in sequence and is sleeved with a positioning block, and the other end passes through the rear baffle and is fixedly connected to the motor; The clock spring is composed of a surface layer, an interlayer and a bottom layer arranged in sequence, the surface layer is fixedly connected to the bottom layer and can rotate relative to the interlayer, the surface layer part protrudes outward to form a convex block, and the positioning block is provided with an opening arranged corresponding to the convex block; A number of lugs are evenly distributed around the interlayer, each lug is provided with a mounting hole, and a positioning column corresponding to each mounting hole is fixed on the positioning plate; The positioning plate is also equipped with a plurality of pressure seats corresponding to the positioning columns, each of which is provided with a pressure head and a handle, the handle is hingedly connected to the pressure seat through a connecting rod, and the pressure head is hingedly connected to the handle and the pressure seat respectively, and rotating the handle can drive the pressure head to rest against the corresponding positioning column; A support rod is vertically installed on the workbench and a horizontally arranged support arm is sleeved on the support rod, and the microphone is movably connected to one end of the support arm away from the support rod; A slide rail is fixedly arranged on one side of the workbench and a slide seat is covered on the slide rail. The support rod is passed through the slide seat. A scale bar is arranged near the slide rail on the workbench. An indicator needle corresponding to the scale bar is fixedly arranged on the slide seat. When the slide seat moves along the slide rail, the microphone can be driven to approach or move away from the clock spring. Two pillars are installed between the two flat plates, and the two pillars are arranged on both sides of the rotating shaft. Two limit blocks are sleeved on the rotating shaft, and each limit block is fixedly connected to the lower flat plate.

2. A noise detection device for a clock spring according to claim 1, characterized in that: The motor is covered with an outer cover, and the outer cover is fixedly connected to the rear baffle.

3. A noise detection device for a clock spring according to claim 1, characterized in that: A through hole for the cable to pass through is provided on the sealing chamber, the through hole is filled with sponge and rubber plugs are arranged at both ends of the through hole.

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