A continuity testing device and method for a coil

Abstract

This invention discloses a cable reel continuity testing device and its testing method. It includes a base with a base panel. The upper surface of the base panel is provided with a cable reel clamp assembly and a take-up / undo switch block. The take-up / undo switch block is positioned on the side of the cable reel clamp assembly and is slidably connected to the base panel. The base also includes a test wire insertion plate and a continuity judgment microcontroller, which are electrically connected. The advantages of this invention are: it can test the continuity of a power cord both when stationary and when it is being pulled up; it can accommodate and clamp cable reels of different diameters, thus having a wide range of applications; it improves the clamping effect on the cable reel; it increases the service life of equipment parts; the pull column enables uniform, neat, and orderly pull-up and take-up operations on the power cord; the equipment has a high degree of automation, is easy to control, and has good operational continuity.

Description

Technical Field

[0001] This invention relates to the technical field of vacuum cleaner reels, and in particular to a reel continuity testing device and method. Background Technology

[0002] Vacuum cleaners typically come with a long power cord to increase the cleaning range. When not in use, the power cord is wound up on a reel; when in use, it can be pulled out of the reel to extend for easier cleaning; after use, the power cord can be automatically wound back onto the reel.

[0003] like Figure 1 , Figure 2 and Figure 3 As shown, existing cord reels generally include a fixed base 1 and a cord reel 2. The fixed base 1 is mounted on the vacuum cleaner body and remains stationary. The upper surface of the fixed base 1 has a reel mounting groove 3 for mounting the cord reel 2. The cord reel 2 is mounted on the reel mounting groove 3, and the cord reel 2 can rotate relative to the fixed base 1 to perform cord winding and unwinding operations. Figure 1 , Figure 2 and Figure 3 As shown, a locking device is also provided between the fixed chassis 1 and the winding reel 2. This locking device consists of a transmission block 4, a movable block 5, a compression spring 6, a locking gear 7, and a locking gear 8. The transmission block 4 is mounted on the fixed post 9 on the lower surface of the fixed chassis 1 and is rotatably connected to it. The movable block 5 is mounted on the lower surface of the fixed chassis 1 and is slidably connected to it. The locking gear 7 and the locking gear 8 are both mounted on the lower surface of the fixed chassis 1 and are movably connected to it. In its natural state, the locking gear 7 and the locking gear 8 are engaged with the locking tooth area 10 on the winding reel 2. At this time, the winding reel 2 is locked and cannot rotate relative to it. When an external force pushes the movable block 5 closer to the transmission block 4, the locking gear 7 moves under the cooperation of the fixed shaft pin 11 and the shaft pin groove 12, causing the locking gear 7 to separate from the locking tooth area 10 on the winding reel 2. Simultaneously, the transmission block 4 rotates under the cooperation of the fixed column 13 and the fixed column groove 14. When the transmission block 4 rotates, the locking gear 8 moves under the cooperation of the fixed shaft pin 15 and the shaft pin groove 16, causing the locking gear 8 to also separate from the locking tooth area 10 on the winding reel 2, thus releasing the locked state of the winding reel 2 and allowing it to rotate normally relative to the fixed chassis 1. The compression spring 6 acts as an automatic reset mechanism for the movable block 5. When the external force disappears, the movable block 5 automatically resets, causing the locking gear 7 and the locking gear 8 to re-engage with the locking tooth area on the winding reel 2, relocking the winding reel 2.

[0004] Traditional testing equipment is not suitable for current testing needs and cannot simultaneously test the continuity of the power cord when it is stationary and when it is being retracted. The corresponding testing equipment is functionally deficient and expensive. Summary of the Invention

[0005] The present invention aims to overcome the shortcomings of traditional testing equipment in the prior art, which cannot simultaneously test the continuity of power cords when they are stationary and when they are being wound up. It provides a reel continuity testing device and method that can test the continuity of power cords when they are stationary and when they are being wound up.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A cable reel continuity testing device includes a base with a base panel. The upper surface of the base panel is provided with a cable reel clamp assembly and a take-up / undo switch block. The take-up / undo switch block is located on the side of the cable reel clamp assembly and is slidably connected to the base panel. The base also provides a test wire plug-in board and a continuity judgment microcontroller, which are electrically connected.

[0008] The base panel is equipped with a take-up / release switch cylinder connected to the take-up / release switch pressure block. The cylinder controls the movement of the take-up / release switch pressure block. During testing, the operator places the reel on the reel clamp assembly, which clamps and secures the fixed base on the reel. The test leads on the reel are then connected to the test lead connector. The continuity of the microcontroller test power cable when stationary can be determined by observing the continuity. When it is necessary to test the continuity during the take-up / release process, the take-up / release switch pressure block on the base panel can be controlled to push the movable block on the lower surface of the fixed base, releasing the lock on the reel. After unlocking, the continuity of the microcontroller test power cable can be determined by pulling the power cable back and forth.

[0009] Preferably, the base also includes a pressing block positioned directly above the winding reel clamp assembly. The pressing block and the base are slidably connected vertically. The winding reel clamp assembly includes several movable bases mounted on and slidably connected to the upper surface of the base panel. The movable bases are arranged in a ring on the base panel with the vertical line between the pressing block and the base panel as their center line. Clamping blocks are fixed to the upper surface of each movable base. The base is equipped with a pressing cylinder connected to the pressing block. Under the control of the pressing cylinder, the pressing block moves up and down, pressing against the winding reel on the winding reel clamp assembly, effectively limiting its movement. The winding reel is placed on a placement platform composed of all the movable bases. The sliding design of the movable bases allows them to be adjusted to be closer to or further from the center line, enabling the placement of winding reels of different diameters. The clamping blocks on the movable bases clamp the placed winding reels (fixed base). It can hold and clamp reels of different diameters, making it suitable for a wide range of applications.

[0010] Preferably, a base slider is fixed to the lower surface of the movable base, and a base groove matching the base slider is provided on the base panel. The movable base is slidably connected to the base panel through the cooperation between the base slider and the base groove. The base groove is radially distributed on the base panel with the vertical line between the lower pressure block and the base panel as the center line. The cooperation between the base slider and the base groove facilitates the installation of the movable base on the base panel and also guides the movement of the movable base on the base panel.

[0011] Preferably, a fixing plate is fixed inside the base, and the fixing plate has a fixing plate through hole. The fixing plate through hole is located on the vertical line between the lower pressure block and the base panel. A movable screw is provided in the fixing plate through hole. The movable screw and the fixing plate are slidably connected up and down. A connecting rod is provided between the movable screw and the base slider. One end of the connecting rod is installed on the upper end of the movable screw and hinged to it. The other end of the connecting rod is installed on the base slider and hinged to it. The base slider and the end wall of the base slide groove are connected by a slider return spring. A hexagonal fastening nut is threaded on the movable screw. The hexagonal fastening nut is located below the fixing plate. A rotating column is provided below the fixing plate. The rotating column is rotatably connected to the fixing plate. The rotating column has a nut limiting groove that matches the shape of the hexagonal fastening nut. The lower end of the movable screw is placed in the nut limiting groove. The hexagonal fastening nut is placed in the nut limiting groove and slidably connected up and down with it. A rotary motor connected to a rotating column is mounted on the fixed plate. The rotating column rotates under the control of the rotary motor, causing the hexagonal locking nut in the nut limiting groove to rotate. This controls the up-and-down movement of the movable screw, which, through the transmission of the connecting rod, moves the movable base (base slider) closer to or further from the center line, thus allowing the placement of reels of different diameters. Initially, the position of the movable base can be coarsely adjusted by controlling the rotation of the rotating column, successfully placing the reel on the placement platform composed of all the movable bases. Then, the rotating column is rotated a second time to move the movable base closer to the center line. The clamping block on the movable base clamps the placed reel (fixed base). After clamping, the rotating column continues to rotate, pressing the hexagonal locking nut firmly onto the fixed plate, thus locking the movable screw and ensuring the clamping block maintains a firm grip on the reel (fixed base), improving the clamping effect. The slider return spring automatically resets the movable base (base slider) after the test.

[0012] Preferably, a wear-resistant washer is fitted onto the movable screw, and the wear-resistant washer is positioned between the hexagonal fastening nut and the fixed plate. The design of the wear-resistant washer prevents direct contact between the hexagonal fastening nut and the fixed plate, reducing frictional wear and extending the service life of the equipment parts.

[0013] Preferably, the base panel also includes a turntable and a guide post. The turntable and the base panel are rotatably connected. A cable pull post is fixed on the turntable, and a power cable clamping assembly is provided on the cable pull post. The guide post is positioned between the cable pull post and the reel clamping assembly. The guide post and the base panel are slidably connected vertically, and a power cable limiting notch is provided on the guide post. When checking the continuity of the power cable during the cable pulling process, the operator can lead out the end of the power cable and fix it on the power cable clamping assembly, and then fasten the power cable into the power cable limiting notch on the guide post. A motor housing is provided on the lower surface of the base panel, and a second rotary motor for controlling the rotation of the turntable is located inside the motor housing. The turntable and its pull column are controlled by a rotary motor to rotate, thereby realizing the pulling operation of the power cord. The equipment has a high degree of automation, is easy to control, and has good work continuity. While the pull column is rotating, the guide column is controlled to slide up and down, driving the part of the power cord that passes through the power cord limit notch to move up and down synchronously. This allows the pull column to pull the power cord evenly, neatly, and orderly, thus achieving the purpose of winding without knots and winding the cord evenly and neatly.

[0014] Preferably, the base panel is provided with a rotating shaft, the turntable is fixed to the end of the rotating shaft, and a bevel gear is sleeved on the rotating shaft. The bevel gear is located below the base panel. Inside the base, there is a bevel gear two that meshes with the bevel gear one. A protrusion is fixed on the bevel gear two and is located at the edge of the bevel gear two. The base panel is provided with a guide post through hole that matches the guide post. The guide post is placed in the guide post through hole and is slidably connected to it. The guide post is located on the side of the bevel gear two. A transmission rod is provided between the lower end of the guide post and the protrusion. One end of the transmission rod is mounted on the protrusion and hinged to it, and the other end of the transmission rod is mounted on the lower end of the guide post and hinged to it. The rotating shaft is the motor shaft of a rotary motor, and the rotation of the rotating shaft drives the turntable and the pull post on it to rotate. The bevel gear two is mounted on the outer surface of the motor housing and is rotatably connected to it. When the rotary motor controls the turntable and its pull column to rotate, the transmission action of bevel gear one and bevel gear two causes the protrusion on the edge of bevel gear two to rotate around the center of bevel gear two. Through the transmission rod, this causes the guide column to slide up and down reciprocally, thereby causing the power cable portion passing through the power cable limiting notch to move up and down synchronously. This allows the pull column to pull the power cable evenly, neatly, and orderly, achieving the goal of knot-free winding and uniform, neat coiling. The equipment has a high degree of automation, is easy to control, and has good operational continuity.

[0015] Preferably, the power cord limiting notch is located at the upper end of the guide post. A locking strip is provided at the opening of the power cord limiting notch. One end of the locking strip is installed on and hinged to one side of the power cord limiting notch, and the other end of the locking strip has a buckle. A matching slot is provided on the other side of the power cord limiting notch. After the worker inserts the power cord into the power cord limiting notch, the locking strip can be fastened to the opening of the notch. The locking strip design effectively limits the power cord within the notch, preventing it from detaching during retraction and improving the securing effect of the power cord at the notch.

[0016] Preferably, the power cord clamping assembly includes a movable clamping block and a fixed clamping block. An axial groove is provided on the side wall of the pull post. The movable clamping block has a clamping slider that matches the axial groove. The movable clamping block is mounted on the pull post and slidably connected to it through the cooperation of the clamping slider and the axial groove. The fixed clamping block is fixed on the pull post and positioned directly below the movable clamping block. The pull post has a rack mounting groove parallel to the axial groove. A locking rack is fixed on the bottom surface of the rack mounting groove. A locking block groove is provided on the upper surface of the movable clamping block, on the side facing the rack mounting groove. The widths of the rack mounting groove and the locking block groove are equal. A locking block is slidably connected within the locking block groove. Locking teeth are provided on the side of the locking block facing the locking rack. A compression spring is provided between the side of the locking block facing away from the locking rack and the end wall of the locking block groove. The axial groove and the sliding block facilitate the installation of the movable clamping block on the pull post and guide its movement. In its natural state, the locking block is pressed against the bottom surface of the rack mounting groove by the spring force of the compression spring, with the locking teeth and rack meshing together, locking the movable clamping block. During clamping, the operator places the power cable on the upper surface of the fixed clamping block, then pushes the locking block back on the movable clamping block to separate the locking teeth and rack, releasing the locking state. The operator then controls the movable clamping block to move downwards and press the power cable against the fixed clamping block, completing the clamping operation. Finally, the operator releases the locking block, allowing it to press back against the bottom surface of the rack mounting groove, returning the movable clamping block to its locked state. This improves the clamping effect on the power cable and allows for effective clamping of power cables of different thicknesses.

[0017] The present invention also provides a testing method for a coil continuity testing device, comprising the following steps:

[0018] Step 1: Place the reel on the placement platform composed of all the movable bases, and clamp the fixed base on the reel with the clamping blocks on the movable bases.

[0019] Step 2: After the reel is placed, lead out the end of the power cord and place it on the upper surface of the fixed clamping block. Then, control the movable clamping block to move downwards and press the end of the power cord on the fixed clamping block to fix the end of the power cord to the pull post.

[0020] Step 3: Connect the test leads on the reel to the test lead connector to determine the continuity status of the microcontroller test power line when it is stationary.

[0021] Step four, when checking the continuity status of the power cord during the winding process, the winding and unwinding switch pressure block pushes the movable block on the lower surface of the fixed chassis to release the locking status of the winding reel.

[0022] Step 5: After unlocking, rotate the turntable and its pull rod to retract the power cord. The microcontroller can then determine the continuity status of the power cord during the retraction process by checking the continuity.

[0023] This invention can test the continuity of a power cord both when it is stationary and when it is being retracted. It is more stable, accurate, and efficient, and can be applied to various vacuum cleaner cord reels, reducing costs by more than 80% and increasing efficiency by 20%. It is worth promoting.

[0024] The beneficial effects of this invention are: it can test the continuity of the power cord both when it is stationary and when it is being pulled back; it can accommodate and clamp reels of different diameters, making it widely applicable; it improves the clamping effect on the reels; it increases the service life of equipment parts; the pull column can perform uniform, neat, and orderly pulling operations on the power cord; the equipment has a high degree of automation, is easy to control, and has good operational continuity; it improves the fixing effect of the power cord at the power cord limiting notch; it improves the clamping effect on the power cord and can effectively clamp power cords of different thicknesses. Attached Figure Description

[0025] Figure 1 It is a three-dimensional image of a cable reel;

[0026] Figure 2 This is a bottom view of a cable reel;

[0027] Figure 3 This is a schematic diagram of the internal structure of a cable reel;

[0028] Figure 4 This is a perspective view of the present invention;

[0029] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0030] Figure 6 yes Figure 4 Enlarged view of point B in the middle;

[0031] Figure 7 This is a schematic diagram of the structural connection between the guy wire post and the guide post;

[0032] Figure 8 This is a top view of a reel clamp assembly;

[0033] Figure 9 yes Figure 8 Sectional view at point CC.

[0034] In the diagram: 1. Fixed chassis, 2. Winding reel, 3. Reel mounting slot, 4. Transmission block, 5. Movable block, 6. Compression spring one, 7. Locking gear one, 8. Locking gear two, 9. Fixed column, 10. Locking gear area, 11. Fixed pin one, 12. Pin slide groove one, 13. Fixed column, 14. Fixed column slide groove, 15. Fixed pin two, 16. Pin slide groove two, 17. Base, 18. Base panel, 19. Take-up and untake-off switch pressure block, 20. Test wire insertion plate, 21. Lower pressure block, 22. Movable base, 23. Clamping block, 24. Base slider, 25. Base slide groove, 26. Fixed plate, 27. Fixed plate through hole, 28. Movable screw, 29. Connecting rod, 30. 31. Hexagonal fastening nut, 32. Rotating column, 33. Nut limiting groove, 34. Wear-resistant washer, 35. Turntable, 36. Guide column, 37. Pull wire column, 38. Power cord limiting notch, 39. Rotating shaft, 40. Bevel gear one, 41. Bevel gear two, 42. Protrusion, 43. Guide column through hole, 44. Transmission rod, 45. Locking bar, 46. Buckle, 47. Slot, 48. Movable wire clamping block, 49. Fixed wire clamping block, 50. Axial groove, 51. Wire clamping slider, 52. Rack mounting groove, 53. Locking rack, 54. Locking block, 55. Locking tooth, 56. Compression spring two, 57. Slider return spring. Detailed Implementation

[0035] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0036] like Figure 4 In the embodiments described, a reel continuity testing device includes a base 17, a base panel 18 on the base 17, a reel clamp assembly and a take-up / undo switch block 19 on the upper surface of the base panel 18, the take-up / undo switch block 19 being placed on the side of the reel clamp assembly, the take-up / undo switch block 19 being slidably connected to the base panel 18, and a test wire plug-in plate 20 and a continuity judgment microcontroller on the base 17, the test wire plug-in plate 20 and the continuity judgment microcontroller being electrically connected.

[0037] The base 17 is also provided with a lower pressure block 21, which is located directly above the winding clamp assembly. The lower pressure block 21 and the base 17 are slidably connected vertically. The winding clamp assembly includes several movable bases 22, which are installed on the upper surface of the base panel 18 and slidably connected thereto. The movable bases 22 are arranged in a ring on the base panel 18 with the vertical line between the lower pressure block 21 and the base panel 18 as the center line. A clamping block 23 is fixed on the upper surface of the movable base 22.

[0038] like Figure 8 and Figure 9 As shown, a base slider 24 is fixed on the lower surface of the movable base 22, and a base slide groove 25 matching the base slider 24 is provided on the base panel 18. The movable base 22 is slidably connected to the base panel 18 through the cooperation between the base slider 24 and the base slide groove 25. The base slide groove 25 is radially distributed on the base panel 18 with the vertical line between the lower pressure block 21 and the base panel 18 as the center line.

[0039] A fixing plate 26 is fixed inside the base 17. The fixing plate 26 has a fixing plate through hole 27 located on the vertical line between the lower pressure block 21 and the base panel 18. A movable screw 28 is installed inside the fixing plate through hole 27. The movable screw 28 and the fixing plate 26 are slidably connected vertically. A connecting rod 29 is provided between the movable screw 28 and the base slider 24. One end of the connecting rod 29 is mounted on the upper end of the movable screw 28 and hinged thereto, and the other end of the connecting rod 29 is mounted on the base slider 24 and hinged thereto. The base slider 24 and... The end walls of the base slide groove 25 are connected by a slider return spring 57. A hexagonal fastening nut 30 is threaded onto the movable screw 28. The hexagonal fastening nut 30 is located below the fixed plate 26. A rotating column 31 is provided below the fixed plate 26. The rotating column 31 and the fixed plate 26 are rotatably connected. The rotating column 31 is provided with a nut limiting groove 32 that matches the shape of the hexagonal fastening nut 30. The lower end of the movable screw 28 is placed in the nut limiting groove 32. The hexagonal fastening nut 30 is placed in the nut limiting groove 32 and is slidably connected to it.

[0040] A wear-resistant washer 33 is fitted onto the movable screw 28, and the wear-resistant washer 33 is placed between the hexagonal fastening nut 30 and the fixing plate 26.

[0041] like Figure 4 As shown, the base panel 18 is also equipped with a turntable 34 and a guide post 35. The turntable 34 is rotatably connected to the base panel 18. A cable pull post 36 is fixed on the turntable 34, and a power cord clamping assembly is provided on the cable pull post 36. The guide post 35 is placed between the cable pull post 36 and the cable reel clamping assembly. The guide post 35 and the base panel 18 are slidably connected vertically. Figure 6 As shown, the guide post 35 is provided with a power line limiting notch 37.

[0042] like Figure 7 As shown, a rotating shaft 38 is provided on the base panel 18, and a turntable 34 is fixed to the end of the rotating shaft 38. A bevel gear 39 is also sleeved on the rotating shaft 38. The bevel gear 39 is located below the base panel 18. Inside the base 17, there is a bevel gear 40 that meshes with the bevel gear 39. A protrusion 41 is fixed on the bevel gear 40 and is located at the edge of the bevel gear 40. The base panel 18 is provided with a guide post through hole 42 that matches the guide post 35. The guide post 35 is placed in the guide post through hole 42 and is slidably connected to it. The guide post 35 is located on the side of the bevel gear 40. A transmission rod 43 is provided between the lower end of the guide post 35 and the protrusion 41. One end of the transmission rod 43 is mounted on the protrusion 41 and is hinged to it. The other end of the transmission rod 43 is mounted on the lower end of the guide post 35 and is hinged to it.

[0043] like Figure 6 As shown, the power cord limiting notch 37 is located at the upper end of the guide post 35. A locking bar 44 is provided at the opening of the power cord limiting notch 37. One end of the locking bar 44 is installed on one side of the power cord limiting notch 37 and is hinged thereto. The other end of the locking bar 44 is provided with a buckle 45. The other side of the power cord limiting notch 37 is provided with a slot 46 that matches the buckle 45.

[0044] like Figure 5 As shown, the power cord clamping assembly includes a movable clamping block 47 and a fixed clamping block 48. An axial groove 49 is provided on the side wall of the pull post 36. The movable clamping block 47 is provided with a clamping slider 50 that matches the axial groove 49. The movable clamping block 47 is mounted on the pull post 36 and slidably connected to it through the cooperation of the clamping slider 50 and the axial groove 49. The fixed clamping block 48 is fixed on the pull post 36 and positioned directly below the movable clamping block 47. The pull post 36 is provided with a clamping slider 50 that matches the axial groove 49. 49 parallel rack mounting grooves 51, a locking rack 52 is fixed on the bottom surface of the rack mounting groove 51, a locking block groove 53 is provided on the upper surface of the movable clamping block 47 and on the side facing the rack mounting groove 51, the width of the rack mounting groove 51 and the locking block groove 53 are equal, a locking block 54 is slidably connected in the locking block groove 53, a locking tooth 55 is provided on the side of the locking block 54 facing the locking rack 52, and a compression spring 56 is provided between the side of the locking block 54 facing away from the locking rack 52 and the end wall of the locking block groove 53.

[0045] The movable clamping block 47 and the fixed clamping block 48 can be designed with power cord concave grooves. The power cord concave grooves are placed on the opposite side of the movable clamping block 47 and the fixed clamping block 48. Through the design of the power cord concave grooves, the clamping effect of the movable clamping block 47 and the fixed clamping block 48 on the power cord can be further improved.

[0046] The present invention also provides a testing method for a coil continuity testing device, comprising the following steps:

[0047] Step 1: Place the reel on the placement platform composed of all the movable bases 22, and clamp the fixed base 1 on the reel with the clamping blocks 23 on the movable bases 22.

[0048] Step 2: After the reel is placed, lead out the end of the power cord and place it on the upper surface of the fixed clamping block 48. Then, by controlling the movable clamping block 47 to move downward, press the end of the power cord on the fixed clamping block 48 to fix the end of the power cord on the pull post 36.

[0049] Step 3: Connect the test lead on the reel to the test lead connector 20. The continuity status of the microcontroller test power line when stationary can be determined by the continuity test.

[0050] Step four, when checking the continuity status of the power cord during the winding process, the movable block 5 on the lower surface of the fixed chassis 1 is pushed by the winding and unwinding switch pressure block 19 to release the locking status of the winding reel 2;

[0051] Step 5: After unlocking, rotate the turntable 34 and its pull column 36 to retract the power cord. The continuity status of the power cord during the retraction process can be determined by the microcontroller.

[0052] Specific working principle:

[0053] When placing the reel, the position of the movable base 22 is coarsely adjusted by rotating the rotating column 31 controlled by the rotary motor, so that the reel is successfully placed on the placement platform composed of all the movable bases 22. Then, the rotating column 31 is rotated a second time to move the movable base 22 closer to the center of the placement platform. The clamping block 23 on the movable base 22 clamps the placed reel (fixed base 1). After clamping, the rotating column 31 is rotated again to press the hexagonal fastening nut 30 onto the fixed plate 26, thereby fixing and locking the movable screw 28, so that the clamping block 23 can keep the reel (fixed base 1) firmly clamped.

[0054] After the cable reel is placed, lead out the end of the power cord and place it on the upper surface of the fixed clamping block 48 (while simultaneously fastening the power cord into the power cord limiting notch 37 on the guide post 35). Then, push back the locking block 54 on the movable clamping block 47 to separate the locking teeth 55 and the locking rack 52, releasing the locking state of the movable clamping block 47. Then, control the movable clamping block 47 to move downward and press the end of the power cord on the fixed clamping block 48 to complete the clamping operation of the power cord. Finally, the operator releases the locking block 54 and presses it back onto the bottom surface of the rack mounting groove 51, so that the movable clamping block 47 returns to the locked state.

[0055] During testing, the test leads on the reel are connected to the test lead connector 20. The continuity status of the microcontroller test power cord when stationary can be determined by the continuity test. When it is necessary to detect the continuity status during the reel-up process, the reel-up switch cylinder controls the reel-up switch pressure block 19 to push the movable block 5 on the lower surface of the fixed chassis 1 to release the locking state of the reel 2. After unlocking, the rotary motor 2 controls the turntable 34 and the pull column 36 on it to rotate, thereby realizing the reel-up operation. The continuity status of the microcontroller test power cord during the reel-up process can be determined by the continuity test.

[0056] When the rotary motor controls the turntable 34 and the pull column 36 on it to rotate, the transmission action of the first bevel gear 39 and the second bevel gear 40 will drive the protrusion 41 on the edge of the second bevel gear 40 to rotate around the center of the second bevel gear 40. Through the transmission action of the transmission rod 43, the guide column 35 will slide up and down, thereby driving the power line part passing through the power line limiting notch 37 to move up and down synchronously, so that the pull column 36 can pull the power line evenly, neatly and orderly.

[0057] This invention can test the continuity of a power cord both when it is stationary and when it is being retracted. It is more stable, accurate, and efficient, and can be applied to various vacuum cleaner cord reels, reducing costs by more than 80% and increasing efficiency by 20%. It is worth promoting.

Claims

1. A continuity testing device for a cable reel, characterized in that, Includes a base (17), on which a base panel (18) is provided. The upper surface of the base panel (18) is provided with a winding reel clamp assembly and a take-up / unwind switch pressure block (19). The take-up / unwind switch pressure block (19) is located on the side of the winding reel clamp assembly. The take-up / unwind switch pressure block (19) and the base panel (18) are slidably connected. The base (17) also includes a test wire insertion plate (20) and a continuity judgment microcontroller. The test wire insertion plate (20) and the continuity judgment microcontroller are electrically connected. The base (17) also includes a lower pressure block (21), which is located directly above the winding clamp assembly. 21) and the base (17) are slidably connected. The winding reel clamp assembly includes several movable bases (22). The movable bases (22) are installed on the upper surface of the base panel (18) and slidably connected thereto. The movable bases (22) are arranged in a ring on the base panel (18) with the vertical line between the lower pressure block (21) and the base panel (18) as the center line. The upper surface of the movable bases (22) is fixed with clamping blocks (23). The base panel (18) is also provided with a turntable (34) and guide posts (35). The turntable (34) and the base panel (18) are rotatably connected. The turntable (34) is fixed with a pull post (36). A power cord clamping assembly is provided on the pull post (36). The guide post (35) is placed between the pull post (36) and the winding reel clamping assembly. The guide post (35) and the base panel (18) are slidably connected. A power cord limiting notch (37) is provided on the guide post (35). A rotating shaft (38) is provided on the base panel (18). The turntable (34) is fixed to the end of the rotating shaft (38). A bevel gear one (39) is also sleeved on the rotating shaft (38). The bevel gear one (39) is placed below the base panel (18). A bevel gear two (40) that meshes with the bevel gear one (39) is provided inside the base (17). A protrusion (41) is fixed on the second bevel gear (40). The protrusion (41) is located at the edge of the second bevel gear (40). The base panel (18) is provided with a guide post through hole (42) that matches the guide post (35). The guide post (35) is placed in the guide post through hole (42) and is slidably connected to it. The guide post (35) is located on the side of the second bevel gear (40). A transmission rod (43) is provided between the lower end of the guide post (35) and the protrusion (41). One end of the transmission rod (43) is mounted on the protrusion (41) and is hinged to it. The other end of the transmission rod (43) is mounted on the lower end of the guide post (35) and is hinged to it.

2. The cable reel continuity testing device according to claim 1, characterized in that, The lower surface of the movable base (22) is fixed with a base slider (24), and the base panel (18) is provided with a base groove (25) that matches the base slider (24). The movable base (22) is slidably connected to the base panel (18) through the cooperation between the base slider (24) and the base groove (25). The base groove (25) is radially distributed on the base panel (18) with the vertical line between the lower pressure block (21) and the base panel (18) as the center line.

3. The winding reel continuity testing device according to claim 2, characterized in that, A fixing plate (26) is fixed inside the base (17). The fixing plate (26) has a fixing plate through hole (27). The fixing plate through hole (27) is located on the vertical line between the lower pressure block (21) and the base panel (18). A movable screw (28) is provided in the fixing plate through hole (27). The movable screw (28) and the fixing plate (26) are slidably connected. A connecting rod (29) is provided between the movable screw (28) and the base slider (24). One end of the connecting rod (29) is installed on the upper end of the movable screw (28) and hinged to it. The other end of the connecting rod (29) is installed on the base slider (24) and hinged to it. 24) and the end wall of the base slide groove (25) are connected by a slider return spring (57). The movable screw (28) is threaded with a hexagonal fastening nut (30). The hexagonal fastening nut (30) is placed below the fixed plate (26). The fixed plate (26) is provided with a rotating column (31) below it. The rotating column (31) and the fixed plate (26) are rotatably connected. The rotating column (31) is provided with a nut limiting groove (32) that matches the shape of the hexagonal fastening nut (30). The lower end of the movable screw (28) is placed in the nut limiting groove (32). The hexagonal fastening nut (30) is placed in the nut limiting groove (32) and is slidably connected to it.

4. The winding reel continuity testing device according to claim 3, characterized in that, A wear-resistant washer (33) is fitted onto the movable screw (28), and the wear-resistant washer (33) is placed between the hexagonal fastening nut (30) and the fixing plate (26).

5. A winding reel continuity testing device according to any one of claims 1-4, characterized in that, The power cord limiting notch (37) is located at the upper end of the guide post (35). A locking bar (44) is provided at the opening of the power cord limiting notch (37). One end of the locking bar (44) is installed on one side of the power cord limiting notch (37) and is hinged thereto. The other end of the locking bar (44) is provided with a buckle (45). The other side of the power cord limiting notch (37) is provided with a slot (46) that matches the buckle (45).

6. The winding reel continuity testing device according to claim 5, characterized in that, The power cord clamping assembly includes a movable clamping block (47) and a fixed clamping block (48). An axial groove (49) is provided on the side wall of the pull post (36). The movable clamping block (47) is provided with a clamping slider (50) that matches the axial groove (49). The movable clamping block (47) is mounted on the pull post (36) and slidably connected to it through the cooperation of the clamping slider (50) and the axial groove (49). The fixed clamping block (48) is fixed on the pull post (36) and positioned directly below the movable clamping block (47). The pull post (36) is provided with a clamping slider that matches the axial groove (49). A parallel rack mounting groove (51) is provided. A locking rack (52) is fixed on the bottom surface of the rack mounting groove (51). A locking block groove (53) is provided on the upper surface of the movable clamping block (47) and on the side facing the rack mounting groove (51). The widths of the rack mounting groove (51) and the locking block groove (53) are equal. A locking block (54) is slidably connected in the locking block groove (53). A locking tooth (55) is provided on the side of the locking block (54) facing the locking rack (52). A compression spring (56) is provided between the side of the locking block (54) facing away from the locking rack (52) and the end wall of the locking block groove (53).

7. A testing method for a reel continuity testing device applicable to the reel continuity testing device of claim 6, characterized in that, Includes the following steps: Step 1: Place the reel on the placement platform composed of all the movable bases (22), and clamp the fixed base (1) on the reel with the clamping block (23) on the movable base (22); Step 2: After the reel is placed, lead out the end of the power cord and place it on the upper surface of the fixed clamping block (48). By controlling the movable clamping block (47) to move downward, press the end of the power cord on the fixed clamping block (48) to fix the end of the power cord on the pull post (36). Step 3: Connect the test wire on the reel to the test wire connector (20) to determine the continuity status of the microcontroller test power line when it is stationary. Step 4: When checking the continuity status of the power cord during the winding process, the movable block (5) on the lower surface of the fixed chassis (1) is pushed by the winding and unwinding switch pressure block (19) to release the locking status of the winding reel (2); Step 5: After unlocking, rotate the control turntable (34) and its pull rod (36) to perform the pull operation on the power cord. The continuity status of the microcontroller during the pull process of the power cord can be judged by the continuity test.

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