A performance testing device for clock springs

Abstract

The present invention provides a performance testing device for a clock spring, which belongs to the field of mechanical technology and solves the problem that the existing clock spring performance testing effect is poor. The performance testing device for the clock spring includes: a frame, which has a table and at least one mounting seat is provided on the table; a fixing fixture, which is fixed on the mounting seat, and a clock spring is clamped on the fixing fixture. The clock spring is composed of a body and an input cable. The body is penetrated with a through hole in the axial direction, the body surface extends outward to form a first convex block, and a plurality of first plug interfaces are provided on the first convex block, the body back extends outward to form a second convex block, and a plurality of second plug interfaces are provided on the second convex block; a display screen, which is arranged corresponding to the mounting seat; a detector, which is electrically connected to the clock spring and the display screen respectively, and the detector can detect a plurality of electrical performance values ​​of the clock spring and display them one by one on the display screen. The present invention has the characteristics of convenient operation and good detection effect.

Description

Technical Field

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

[0002] The clock spring is an important part in the automobile airbag system, and its performance is directly related to whether the airbag system can work properly. The clock spring is used to connect the main airbag (the airbag in the steering wheel) and the airbag harness, which is actually a section of harness. Since the main airbag rotates with the steering wheel, the clock spring can be considered as a harness of a certain length, which is wound on the steering shaft of the steering wheel. When the steering wheel rotates, it can be loosened in the opposite direction or wound tighter. However, it is also necessary to ensure that the harness cannot be broken when the steering wheel is turned to the left or right. Therefore, it is particularly important to leave a margin for the connection harness during installation, so that it can be guaranteed in the middle position to ensure that the steering wheel is turned to the extreme position to one side without being broken.

[0003] Accurate detection of clock springs is crucial in actual production. However, the current detection of clock springs is still at the manual detection stage, and each person can only detect one product at a time. This method is time-consuming, labor-intensive and wastes human resources.

[0004] In addition, since the inspection of the clock spring not only requires the electrical performance of the airbag wiring harness inside it to be inspected, but also the mechanical performance of the clock spring when rotating, it covers the inspection of items such as resistance, circuit continuity, and rotational torque. There are many types of inspections, which not only require special inspection equipment, but also further increase the difficulty of inspection. The inspection results are easily confused, resulting in low inspection efficiency and increased production costs.

[0005] Therefore, in view of the technical deficiencies of the existing clock spring detection, the present invention designs a clock spring performance detection device which is easy to operate and has good detection effect. Summary of the invention

[0006] In order to solve the problems existing in the prior art, the invention provides a performance testing device for a clock spring which is convenient to operate and has good testing effect.

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

[0008] A frame having a horizontally arranged table top and at least one mounting seat provided on the table top;

[0009] A fixing fixture is fixed on the mounting seat, and a clock spring is clamped on the fixing fixture. The clock spring is composed of a body and an input cable. The body is penetrated with a through hole in the axial direction. The body surface extends outward to form a first convex block, and a plurality of first plug interfaces are opened on the first convex block. The back of the body extends outward to form a second convex block, and a plurality of second plug interfaces are opened on the second convex block. The first convex block and the second convex block are staggered.

[0010] A display screen is arranged corresponding to the mounting seat, and the display screen is located above the table top and is arranged vertically with the table top;

[0011] The detector is arranged inside the frame, and is electrically connected to the clock spring and the display screen respectively. The detector can detect several electrical performance values ​​of the clock spring and display them one by one on the display screen.

[0012] As a further improvement of the present case, the fixing fixture includes a fixing seat and a clamping cylinder, the main body is clamped in the fixing seat, at least one first plug is fixedly connected to the output shaft of the clamping cylinder, and the clamping cylinder can drive the first plug to move toward the main body and embed into the corresponding first plug interface.

[0013] As a further improvement of the present invention, a positioning assembly is provided on the fixing fixture, and the positioning assembly includes a handle and a movable shaft which are connected to each other, and a plurality of second plugs which can be embedded in the second plug interface are fixedly connected to one end of the movable shaft away from the handle.

[0014] As a further improvement of the present case, the positioning assembly also includes an articulated seat, the handle is hingedly connected to the articulated seat through a first connecting rod, the movable shaft passes through the articulated seat and is connected to the first connecting rod through a second connecting rod, and the swinging handle drives the connecting rods and the movable shaft to move and enables the second plug to be embedded in the corresponding second plug interface.

[0015] As a further improvement of the present invention, a positioning cylinder is provided on the back of the main body and a positioning block coaxially arranged with the through hole is sleeved on the output shaft of the positioning cylinder. When the clock spring is embedded in the fixing seat, the positioning cylinder drives the positioning block to partially embed into the through hole.

[0016] As a further improvement of the present invention, a wiring post is further provided on the table, and the wiring post is electrically connected to the detector, the card connector, the first plug and each second plug respectively.

[0017] As a further improvement of the present case, there are two mounting seats and two display screens. The above-mentioned fixed clamp is arranged on one of the mounting seats, and a rotating clamp and a torque measuring mechanism are arranged on the other mounting seat. The above-mentioned clock spring is clamped on the rotating clamp, and the torque measuring mechanism can drive the clock spring to rotate and display the measured torque value of the clock spring on the corresponding display screen.

[0018] As another improvement of the present case, the rotating clamp includes a clamping seat and two clamping blocks symmetrically arranged on both sides of the clamping seat. Each clamping block is connected to a movable cylinder. When the clock spring is clamped in the clamping seat, the movable cylinder drives the corresponding clamping block to clamp or release the clock spring.

[0019] As a further improvement of the present case, a mounting hole coaxially arranged with the through hole is provided through the middle of the clamping seat, and a rotating shaft is provided in the mounting hole. The rotating shaft passes through the mounting hole and the through hole in sequence and is fixedly connected to the body.

[0020] As a further improvement of the present invention, the torque measuring mechanism includes a driving motor and a torquer which are connected to each other. The torquer is connected to the rotating shaft and the driving motor drives the torquer to rotate together with the rotating shaft.

[0021] As a further improvement of the present invention, a storage box for storing clock springs is also provided on one side of the rack, and a display for displaying whether the storage box has been fully stored is installed on the rack.

[0022] Compared with the prior art, the present invention has a reasonable structural design. The resistance, impedance, torque and other properties of the clock spring can be tested at one time by setting a fixed fixture and a rotating fixture, and the data reflected on the display screen can be screened. The operation is convenient, ensuring that the screened products are qualified in all aspects and the detection effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a partial structural schematic diagram of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the fixing fixture in the present invention.

[0025] Figure 3 yes Figure 2 Schematic diagram of part of the structure.

[0026] Figure 4 yes Figure 1 Schematic diagram of part of the structure.

[0027] Figure 5 It is a structural schematic diagram of the rotating clamp in the present invention.

[0028] Figure 6 It is a structural schematic diagram of the clock spring in the present invention.

[0029] Figure 7 yes Figure 6 Schematic diagram of the structure from another perspective.

[0030] In the figure, 10, frame; 11, table; 12, mounting seat; 13, display screen; 14, terminal post; 15, display; 21, fixing seat; 211, "U"-shaped groove; 212, platform; 22, clamping cylinder; 221, first plug; 23, positioning cylinder; 231, positioning block; 232, step; 24, hinged seat; 241, first connecting rod; 242, second connecting rod; 25, handle; 26, moving shaft; 261, second plug; 27, slide seat; 28, slide rail; 31, clamping seat; 311, mounting hole; 32, clamping block; 321, groove; 33, moving cylinder; 34, rotating shaft; 341, slot; 35, sleeve ;351, arc-shaped protrusion;41, card seat;411, card hole;42, disengagement cylinder;43, disengagement plate;431, auxiliary hole;51, drive motor;52, torquer;53, torque protector;54, wheel;55, stopper;551, clamping claw;552, clamping groove;56, counter;60, body;61, first protrusion;611, first plug interface;62, second protrusion;621, second plug interface;63, surface layer;64, interlayer;65, bottom layer;651, notch;66, through hole;67, convex shaft;71, first sensor;72, second sensor;73, third sensor;80, handle;90, caster. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below in conjunction with the embodiments and drawings.

[0032] like Figure 1 , Figure 6 and Figure 7 As shown, the performance testing equipment of the clock spring includes:

[0033] The frame 10 has a horizontally arranged table 11 and at least one mounting seat 12 is arranged on the table 11;

[0034] A fixing fixture is fixed on the mounting seat 12, and a clock spring is clamped on the fixing fixture. The clock spring is composed of a body 60 and an input cable (not shown in the figure). The body 60 is penetrated by a through hole 66 along the axial direction. The surface of the body 60 extends outward to form a first protrusion 61, and a plurality of first plug interfaces 611 are provided on the first protrusion 61. The back of the body 60 extends outward to form a second protrusion 62, and a plurality of second plug interfaces 621 are provided on the second protrusion 62. The first protrusion 61 and the second protrusion 62 are staggered.

[0035] A display screen 13 is provided corresponding to the mounting seat 12, and the display screen 13 is located above the table top 11 and is vertically provided with the table top 11;

[0036] The detector (not shown) is arranged inside the frame 10 , and is electrically connected to the clock spring and the display screen 13 , respectively. The detector can detect multiple electrical performance values ​​of the clock spring and display them one by one on the display screen 13 .

[0037] At present, the inspection of clock springs is still in the manual inspection stage. Each person can only inspect one product at a time, which is time-consuming, labor-intensive and wastes human resources. In addition, when inspecting clock springs, in addition to inspecting the electrical properties of the airbag wiring harness inside them, there are many types of inspections, which not only requires special inspection equipment, but also increases the difficulty of inspection. The inspection results are easily confused, resulting in low inspection efficiency and increased production costs.

[0038] To this end, the present invention designs a performance testing device for a clock spring, which positions the clock spring through a fixing fixture, and then performs electrical performance testing, effectively testing various electrical properties of the clock spring, and feeding back the test results to a display screen 13, so that all test results are clear at a glance, which is convenient for operators to observe.

[0039] Among them, a control system is arranged in the frame 10, and the range values ​​of various electrical properties of the clock spring are set in advance. Whether the test result falls within the range or outside the range, the control system will display the comparison result on the display screen 13. The operator can directly know whether the test result meets the requirements from the display screen 13, and the detection efficiency is high and the operation is convenient.

[0040] The installation of the mounting seat 12 here facilitates the installation of the fixing fixture, specifically, positioning the clock spring on the fixing fixture. The clock spring is generally composed of a ring-shaped body 60 and an input cable, an output cable, etc. connected thereto. In this embodiment, the clock spring preferably includes a body 60 and an input cable, and the face and back of the body 60 are respectively protruded outward to form a first convex block 61 and a second convex block 62. The first convex block 61 is provided with a plurality of first plug interfaces 611, and the second convex block 62 is provided with a plurality of second plug interfaces 621. The plug interfaces are provided to facilitate connection with cables and the like to transmit electrical signals.

[0041] In this embodiment, preferably, the number of the first plug interfaces 611 is two, the number of the second plug interfaces 621 is also two, and the input cable is embedded in one of the first plug interfaces 611 .

[0042] There are many types of clock springs, and vehicles of different brands and models are equipped with clock springs of different structures. In this embodiment, it is preferred that the first protrusion 61 and the second protrusion 62 on the clock spring are arranged opposite to each other and staggered.

[0043] like Figure 2 and Figure 3As shown, preferably, the fixing fixture includes a fixing seat 21 and a clamping cylinder 22, the main body 60 is clamped in the fixing seat 21, and at least one first plug 221 is fixedly connected to the output shaft of the clamping cylinder 22. The clamping cylinder 22 can drive the first plug 221 to move toward the main body 60 and embed into the corresponding first plug interface 611.

[0044] The fixing fixture is composed of a fixing seat 21 and a clamping cylinder 22. In fact, the fixing fixture has a bottom plate, and the fixing seat 21 and the clamping cylinder 22 are fixedly mounted on the bottom plate, and the bottom plate is inclined to facilitate the operator to perform detection work at a suitable angle.

[0045] The main body 60 is specifically fixed on the fixing base 21, and the clamping cylinder 22 is located on one side of the fixing base 21. The clamping cylinder 22 drives its own output shaft to drive the first plug 221 to move toward the main body 60 and embed the first plug 221 into the corresponding first plug interface 611. Since the input cable is connected to one of the first plug interfaces 611, in this embodiment, the number of first plugs 221 is preferably one, and is set corresponding to the other plug interface.

[0046] Furthermore, a vertically arranged “U”-shaped groove 211 is provided on the fixing seat 21 , a platform 212 is provided on the top of the “U”-shaped groove 211 and the first protrusion 61 abuts against the platform 212 , and a first sensor 71 is passed through the bottom of the “U”-shaped groove 211 .

[0047] There is actually a convex shaft 67 on the main body 60, which is also located on the surface of the main body 60. The "U"-shaped groove 211 is actually set to facilitate the passage of the convex shaft 67. When the main body 60 is installed, it is embedded in the fixing seat 21 from top to bottom, and the convex shaft 67 is embedded in the "U"-shaped groove 211 along the vertical direction. At the same time, a first sensor 71 is penetrated at the bottom of the "U"-shaped groove 211. When it is detected that the main body 60 is fixed in the fixing seat 21, it is fed back to the entire control system to control the clamping cylinder 22 to drive the first plug 221 to embed into the corresponding first plug interface 611, thereby clamping the main body 60.

[0048] In addition, a platform 212 is provided on the top of the “U”-shaped groove 211 for the first protrusion 61 to abut against, so as to further position the body 60 (clock spring) and ensure that the body 60 remains in a stable state.

[0049] Preferably, a positioning assembly is provided on the fixing fixture, and the positioning assembly includes a handle 25 and a movable shaft 26 that are connected to each other, and a plurality of second plugs 261 that can be embedded in the second plug interface 621 are fixedly connected to one end of the movable shaft 26 away from the handle 25 .

[0050] The positioning assembly is arranged corresponding to the second protrusion 62, and the second plug 261 is driven to fit into the corresponding second plug interface 621 by the swing handle 25 to further position the body 60. As can be seen from the above, the number of the second plugs 261 is the same as the number of the second plug interfaces 621, both of which are two.

[0051] Furthermore, the positioning assembly also includes an articulated seat 24, the handle 25 is hingedly connected to the articulated seat 24 through a first connecting rod 241, the movable shaft 26 passes through the articulated seat 24 and is connected to the first connecting rod 241 through a second connecting rod 242, and the swinging handle 25 drives the movement of each connecting rod and the movable shaft 26 and enables the second plug 261 to be embedded in the corresponding second plug interface 621.

[0052] The positioning assembly is actually composed of an articulated seat 24, a handle 25, a movable shaft 26, etc. Specifically, the articulated seat 24 is fixedly connected to the base plate, the handle 25 is hingedly connected to the articulated seat 24 through a first connecting rod 241, and at the same time, the second connecting rod 242 is hingedly connected to the first connecting rod 241 and the movable shaft 26 is hingedly connected to the second connecting rod 242.

[0053] In this embodiment, a bolt is preferably provided between the handle 25 and the first connecting rod 241. When the handle 25 is swung, the first connecting rod 241 can be driven to rotate around the hinge seat 24, and the second connecting rod 242 can be driven to rotate at the same time. Since the movable shaft 26 is provided on the hinge seat 24, the movable shaft 26 moves along its own axial direction under the drive of the second connecting rod 242, thereby driving each second plug 261 to move closer to or away from the corresponding second plug interface 621.

[0054] Furthermore, a slide seat 27 is sleeved on the movable shaft 26 , the second plug 261 is fixedly mounted on the end surface of the slide seat 27 away from the movable shaft 26 , and a slide rail 28 corresponding to the slide seat 27 is installed on the fixing fixture.

[0055] It is worth mentioning that the second plug 261 is actually installed on the slide 27. Specifically, the second plug 261 is fixed on the end surface of the slide 27 away from the moving shaft 26, that is, the second plug 261 is arranged facing the second protrusion 62 (the second plug interface 621). In this embodiment, by providing a slide 27 and a slide rail 28 that cooperate with each other, the moving shaft 26 drives the slide 27 to move along the slide rail 28, approaching or moving away from the second protrusion 62, wherein the slide rail 28 is fixedly connected to the bottom plate.

[0056] Preferably, a positioning cylinder 23 is provided on the back of the main body 60 and a positioning block 231 coaxially arranged with the through hole 66 is sleeved on the output shaft of the positioning cylinder 23. When the clock spring is embedded in the fixing seat 21, the positioning cylinder 23 drives the positioning block 231 to partially embed into the through hole 66.

[0057] The positioning cylinder 23 and the clamping cylinder 22 are arranged on both sides of the fixing seat 21. The body 60 is arranged in a circular ring shape, and the through hole 66 runs through the middle of the body 60. The positioning block 231 corresponds to the through hole 66. When the first sensor 71 senses that the body 60 is fixed in the fixing seat 21, it feeds back to the control system and controls the positioning cylinder 23 to move, driving the positioning block 231 to partially embed into the through hole 66.

[0058] Specifically, a step 232 is provided on the positioning block 231 and the step 232 abuts against the back end surface of the body 60 , thereby realizing the positioning of the body 60 . The positioning cylinder 23 and the clamping cylinder 22 work together to ensure the stable positioning of the body 60 .

[0059] Preferably, a release mechanism is also provided on the fixing fixture, and the release mechanism includes a clamping seat 41 and a disengagement cylinder 42 which are connected to each other. The clamping seat 41 is provided with a row of clamping holes 411 for the input cable to be embedded in. A disengagement plate 43 is embedded in the surface of the clamping seat 41, and a row of auxiliary holes 431 corresponding to each clamping hole 411 is provided on the disengagement plate 43, and the diameter of the auxiliary hole 431 is larger than the diameter of the clamping hole 411. The output shaft of the disengagement cylinder 42 passes through the clamping seat 41 and is fixedly connected to the disengagement plate 43. The disengagement cylinder 42 can drive the disengagement plate 43 to move outward.

[0060] During testing, the input cable is inserted into the card hole 411 on the card seat 41. After the testing is completed, it needs to be detached from the card hole 411. In this embodiment, a detachment cylinder 42 is preferably provided on the back of the card seat 41, and a detachment plate 43 is provided on the face of the card seat 41. The output shaft of the detachment cylinder 42 passes through the card seat 41 and is fixedly connected to the detachment plate 43, and can drive the detachment plate 43 to move outward.

[0061] The stripping plate 43 is provided with auxiliary holes 431 corresponding to the card holes 411, and the diameter of the auxiliary holes 431 is larger than the diameter of the card holes 411. The input cable is embedded in the card holes 411 and also passes through the auxiliary holes 431. The input cable part rests on the end face of the stripping plate 43 away from the card seat 41.

[0062] After the detection is completed, the disengagement cylinder 42 drives the disengagement plate 43 to move outward, and the disengagement plate 43 pushes the input cable to move outward and disengage from the clamping seat 41, thereby realizing the function of automatic disengagement. The force exerted by the disengagement plate 43 on the input cable is relatively balanced, which can avoid damage to the input cable and achieve good detection effect.

[0063] like Figure 1 As shown, further, a connection post 14 is provided on the table 11 , and the connection post 14 is electrically connected to the detector, the card socket 41 , the first plug 221 and each second plug 261 .

[0064] The specific items for electrical performance testing of the clock spring are to detect the on-off, resistance value, impedance and other categories of the internal circuit of the clock spring, which requires electrical connection with the inside of the clock spring. In this embodiment, it is preferred to connect the circuits together through the terminal post 14. The terminal post 14 serves as an indirect connection to connect the detector and the clock spring together. Specifically, each plug interface on the clock spring is connected by the corresponding first plug 221 and the second plug 261. Therefore, the terminal post 14 is electrically connected to the first plug 221 and each second plug 261 through the corresponding circuits. At the same time, the terminal post 14 is also connected to the card seat 41, thereby ensuring that the detector is electrically connected to the input cable, which is convenient for detecting various electrical properties of the clock spring.

[0065] Preferably, there are two mounting seats 12 and two display screens 13. The above-mentioned fixing fixture is arranged on one of the mounting seats 12, and a rotating fixture and a torque measuring mechanism are arranged on the other mounting seat 12. The above-mentioned clock spring is clamped on the rotating fixture. The torque measuring mechanism can drive the clock spring to rotate and display the measured torque value of the clock spring on the corresponding display screen 13.

[0066] In addition to the fixed fixture for testing the electrical properties of the clock spring, the present embodiment also provides a rotating fixture for testing the mechanical properties of the clock spring when it is rotating. Preferably, there are two mounting seats 12 and two display screens 13, which are arranged one-to-one with the fixed fixture and the rotating fixture. After the electrical properties of the clock spring are tested, the mechanical properties are tested.

[0067] In addition, a torque measuring mechanism is provided in conjunction with the rotating fixture to detect the rotation torque of the clock spring, and the measured torque value is displayed on the display screen 13. It is worth mentioning that the measured torque value also needs to be fed back to the control system, compared with the preset range value, and then the result is displayed on the display screen 13. The detection result is intuitive and clear, which is convenient for the operator to observe.

[0068] like Figures 4 to 7 As shown, further, the rotating clamp includes a clamping seat 31 and two clamping blocks 32 symmetrically arranged on both sides of the clamping seat 31, each clamping block 32 is connected to a moving cylinder 33, and when the clock spring is clamped in the clamping seat 31, the moving cylinder 33 drives the corresponding clamping block 32 to clamp or release the clock spring.

[0069] The clock spring is positioned by the symmetrically arranged clamping blocks 32 on the rotating fixture, specifically the body 60 is clamped and positioned. Each clamping block 32 is driven by a moving cylinder 33, which has a fast response speed and improves work efficiency.

[0070] Among them, the main body 60 is actually composed of a surface layer 63, an interlayer 64 and a bottom layer 65, and cables, wiring, etc. are placed inside. The surface layer 63 and the bottom layer 65 are interlocked and connected and can rotate relative to the interlayer 64. When the clock spring is subjected to torque detection here, the two clamping blocks 32 actually clamp and fix the interlayer 64, and the surface layer 63 and the bottom layer 65 rotate under the control of the torque measuring mechanism, thereby performing torque detection.

[0071] Furthermore, a groove 321 matching the outer peripheral side wall structure of the body 60 is formed on the end surface of each clamping block 32 facing the clock spring.

[0072] To ensure the clamping effect, it is preferred that a groove 321 is provided on the end surface of the clamping block 32 facing the clock spring (interlayer 64), which is adapted to the outer peripheral side wall structure of the body 60 (interlayer 64) to ensure that the clamping block 32 and the interlayer 64 are in close contact and improve the positioning effect.

[0073] Preferably, two second sensors 72 corresponding to the two moving cylinders 33 are arranged on both sides of the clock spring, and a third sensor 73 is also arranged around the clock spring.

[0074] The third sensor 73 is used to detect whether the clock spring is fixed in the clamping seat 31 , and the third sensor 73 is consistent with the first sensor 71 . When the clock spring is detected, both can be fed back to the control system, thereby controlling the movement of the two moving cylinders 33 and driving the two clamping blocks 32 to clamp the interlayer 64 .

[0075] It is worth mentioning that when the torque test is performed, the surface layer 63 and the bottom layer 65 are in a rotating state. When the test is completed, the surface layer 63 and the bottom layer 65 return to their initial state. At this time, a locking pin is required to lock the surface layer 63, the bottom layer 65 and the interlayer 64 to prevent the clock spring from rotating itself during subsequent transportation and affecting product installation.

[0076] In this embodiment, two second sensors 72 are preferably provided, corresponding one to one with the two moving cylinders 33. After the detection is completed, when and only when the two second sensors 72 detect the locking pins, they will be fed back to the control system, thereby controlling the movement of the two moving cylinders 33 to disengage the clock spring, thereby ensuring that the clock spring maintains its initial state.

[0077] Preferably, a mounting hole 311 coaxially arranged with the through hole 66 is formed through the middle of the clamping seat 31 , and a rotating shaft 34 is passed through the mounting hole 311 . The rotating shaft 34 passes through the mounting hole 311 and the through hole 66 in sequence and is fixedly connected to the body 60 .

[0078] Furthermore, a mounting hole 311 is provided through the middle of the clamping seat 31 and a rotating shaft 34 is passed through the mounting hole 311. The rotating shaft 34 is arranged through the through hole 66 and a sleeve 35 is sleeved on the rotating shaft 34. The end surface of the sleeve 35 protrudes outward to form two arc-shaped protrusions 351, and two notches 651 corresponding to the two arc-shaped protrusions 351 are provided on the back of the main body 60.

[0079] The rotation of the body 60 is specifically driven by the rotating shaft 34, wherein the through hole 66 on the body 60 is coaxially arranged with the mounting hole 311 on the clamping seat 31, and the rotating shaft 34 passes through the through hole 66 and the mounting hole 311 in sequence. The rotating shaft 34 is specifically fixedly connected to the body 60, and is connected to the back of the body 60 (bottom layer 65) through a sleeve 35 sleeved on the rotating shaft 34. In this embodiment, two arc-shaped protrusions 351 are preferably arranged on the sleeve 35, and two corresponding notches 651 are opened on the back of the bottom layer 65, and the rotating shaft 34 is connected to the body 60 by a connection method in which the arc-shaped protrusions 351 are embedded in the notches 651.

[0080] The two arc-shaped protrusions 351 are arranged opposite to each other, but the arc lengths corresponding to the two arc-shaped protrusions 351 are different. This arrangement makes it easy for the rotating shaft 34 to drive the surface layer 63 and the bottom layer 65 of the body 60 to rotate, so as to facilitate torque detection.

[0081] Preferably, the torque measuring mechanism includes a driving motor 51 and a torquer 52 which are connected to each other. The torquer 52 is connected to the rotating shaft 34 and the driving motor 51 drives the torquer 52 to rotate together with the rotating shaft 34 .

[0082] The torque measuring mechanism actually works by driving the torquer 52 to rotate through the driving motor 51, further connecting the rotating shaft 34 to the torquer 52, thereby driving the rotating shaft 34 to rotate, and also rotating the surface layer 63 and the bottom layer 65 of the body 60.

[0083] Furthermore, a torque protector 53 is disposed between the torquer 52 and the driving motor 51 , and the driving motor 51 , the torque protector 53 and the torquer 52 are coaxially disposed.

[0084] In order to prevent the rotating shaft 34 from driving the surface layer 63 and the bottom layer 65 of the main body 60 to rotate excessively and cause damage to the structure of the main body 60, in this embodiment, a torque protector 53 is preferably provided between the torquer 52 and the drive motor 51. When the torque protector 53 detects that the torque is too large, it can feedback to the control system and control the drive motor 51 to stop working, thereby protecting the main body 60.

[0085] Among them, two support seats are also set in this embodiment, and the torque protector 53 is horizontally set between the two support seats, and the two ends of the torque protector 53 are respectively connected to the drive motor 51 and the torquer 52 through the first coupling. Furthermore, the torquer 52 is connected to the rotating shaft 34 through the second coupling to ensure the effective transmission of rotation.

[0086] Preferably, a wheel piece 54 is fixedly sleeved on one end of the rotating shaft 34 close to the torquer 52, and a stopper 55 is fixedly provided on the corresponding mounting seat 12. Two clamping claws 551 are symmetrically arranged on the stopper 55, and the two clamping claws 551 surround and form a clamping groove 552, and the wheel piece 54 is located in the clamping groove 552.

[0087] After the torque detection is completed, the surface layer 63 and the bottom layer 65 of the main body 60 return to the initial state, and the driving motor 51 controls the rotating shaft 34 to stop rotating. Subsequently, the locking pin needs to be manually inserted into the main body 60 for locking. Before locking, in order to ensure that the rotating shaft 34 remains fixed, a stopper 55 is provided in this embodiment.

[0088] Specifically, a wheel piece 54 is fixedly mounted on the rotating shaft 34, a stopper 55 is fixedly mounted on the mounting seat 12, and the stopper 55 has two clamping claws 551, and the wheel piece 54 is embedded in a clamping groove 552 formed between the two clamping claws 551. When the rotating shaft 34 rotates, there is a gap between the two clamping claws 551, and the wheel piece 54 can rotate freely with the rotating shaft 34. When the driving motor 51 controls the rotating shaft 34 to stop rotating, the stopper 55 controls the two clamping claws 551 to move toward each other, and the space in the clamping groove 552 is gradually reduced until the two clamping claws 551 clamp the wheel piece 54, thereby controlling the wheel piece 54 (rotating shaft 34) to remain stationary.

[0089] Furthermore, a counter 56 for testing the number of rotations is also connected to the rotating shaft 34. The counter 56 is specifically located at one end of the rotating shaft 34 close to the torquer 52. The setting of the counter 56 can feedback the number of clock spring rotations in the clockwise or counterclockwise direction, which is convenient for recording during detection and used to observe the number of rotations of each clock spring.

[0090] Preferably, a slot 341 for the input cable to be inserted is provided at one end of the rotating shaft 34 passing through the mounting hole 311. In this embodiment, the face of the body 60 is the end face of the surface layer 63. Since the input cable is connected to the first plug interface 611, when the clock spring rotates, the input cable rotates with the surface layer 63. In order to avoid interference between the input cable and other components during rotation, the input cable is inserted into the slot 341 for position limiting, so as to facilitate smooth detection.

[0091] like Figure 2 and Figure 5As shown, preferably, each clamp is symmetrically provided with two handles 80. The arrangement of the handles 80 facilitates the operator to directly take and place the clamp when installing or removing the clamp, and is convenient for transportation and carrying.

[0092] like Figure 1 As shown, further, a storage box (not shown in the figure) for storing clock springs is also provided on one side of the rack 10, and a display 15 for displaying whether the storage box has been fully stored is installed on the rack 10.

[0093] After the mechanical property test of the clock spring is completed, that is, after the clock spring is locked by the locking pin, it needs to be placed in a storage box for storage and sorting in order to carry out subsequent work. Here, the display 15 works with the storage box, and the value can be pre-set according to the capacity of the storage box. When the value on the display 15 reaches the pre-set value, one storage box is stored, and the storage work of the next storage box can continue. Such a setting can avoid the phenomenon of missing or exceeding the storage box.

[0094] In addition, casters 90 are installed at the four corners of the bottom of the chassis. The casters 90 are height-adjustable and can change the height of the chassis from the ground, making it easier for operators of different heights to perform related operations. The setting of the casters 90 also makes it easier to move the entire chassis for transportation.

[0095] The performance testing equipment for the clock spring has a reasonable structural design. The resistance, impedance, torque and other performances of the clock spring are tested at one time by setting a fixed fixture and a rotating fixture, and the data reflected by the display screen 13 are screened. The operation is convenient, ensuring that the screened products are qualified in all aspects and have a good testing effect.

[0096] 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 performance testing device for a clock spring, characterized in that: include: A frame having a horizontally arranged table top and at least one mounting seat provided on the table top; A fixing fixture is fixed on the mounting seat, and a clock spring is clamped on the fixing fixture. The clock spring is composed of a body and an input cable. The body is penetrated with a through hole in the axial direction. The body surface extends outward to form a first convex block, and a plurality of first plug interfaces are opened on the first convex block. The back of the body extends outward to form a second convex block, and a plurality of second plug interfaces are opened on the second convex block. The first convex block and the second convex block are staggered. A display screen is arranged corresponding to the mounting seat, and the display screen is located above the table top and is arranged vertically with the table top; A detector is arranged inside the frame, the detector is electrically connected to the clock spring and the display screen respectively, and the detector can detect several electrical performance values ​​of the clock spring and display them one by one on the display screen; The fixing fixture comprises a fixing seat and a clamping cylinder, the body is clamped in the fixing seat, at least one first plug is fixedly connected to the output shaft of the clamping cylinder, and the clamping cylinder can drive the first plug to move toward the body and insert into the corresponding first plug interface; A positioning assembly is arranged on the fixing fixture, and the positioning assembly includes a handle and a movable shaft connected to each other, and a plurality of second plugs capable of being embedded in the second plug interface are fixedly connected to one end of the movable shaft away from the handle; The positioning assembly also includes an articulated seat, the handle is hingedly connected to the articulated seat through a first connecting rod, the movable shaft passes through the articulated seat and is connected to the first connecting rod through a second connecting rod, and the swinging handle drives the connecting rods and the movable shaft to move and enables the second plug to be inserted into the corresponding second plug interface; There are two mounting seats, two display screens, the fixed fixture is arranged on one of the mounting seats, and the other mounting seat is provided with a rotating fixture and a torque measuring mechanism, the rotating fixture is fixed with the clock spring, and the torque measuring mechanism can drive the clock spring to rotate and display the measured torque value of the clock spring on the corresponding display screen; The rotating fixture comprises a clamping seat and two clamping blocks symmetrically arranged on both sides of the clamping seat, each clamping block is connected to a moving cylinder, and when the clock spring is clamped in the clamping seat, the moving cylinder drives the corresponding clamping block to clamp or release the clock spring; A mounting hole coaxially arranged with the through hole is formed in the middle of the clamping seat, and a rotating shaft is passed through the mounting hole. The rotating shaft passes through the mounting hole and the through hole in sequence and is fixedly connected to the body. The torque measuring mechanism comprises a driving motor and a torquer which are connected to each other. The torquer is connected to the rotating shaft and the driving motor drives the torquer to rotate together with the rotating shaft.

2. A clock spring performance testing device according to claim 1, characterized in that: A positioning cylinder is arranged at the back of the main body, and a positioning block coaxially arranged with the through hole is sleeved on the output shaft of the positioning cylinder. When the clock spring is embedded in the fixing seat, the positioning cylinder drives the positioning block part to be embedded in the through hole.

3. The performance testing device for a clock spring according to claim 1, characterized in that: A storage box for storing clock springs is also provided on one side of the rack, and a display for displaying whether the storage box has been fully stored is installed on the rack.

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