Curvature detection device for electric steering input shaft production
By designing an adaptive clamping mechanism and a detection mechanism for the bending degree of electric steering input shafts in production, the problem of inconvenience in clamping electric steering input shafts of different lengths and thicknesses in existing devices has been solved, achieving flexible clamping and accurate detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU YINGHANNI PRECISION MACHINERY CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-04-28
AI Technical Summary
Existing bending detection devices for electric steering input shaft production are not convenient for clamping and fixing electric steering input shafts of different lengths and thicknesses, resulting in low flexibility and practicality in use.
A bending degree detection device including a clamping mechanism and a detection mechanism was designed. The clamping mechanism adaptively clamps electric steering input shafts of different thicknesses, and the spacing of the clamping mechanism is adjusted by a slide, a slider and a motor to accommodate input shafts of different lengths. The bending degree is detected by an infrared sensor.
It enables flexible clamping and inspection of electric steering input shafts of different thicknesses and lengths, improving the practicality and inspection accuracy of the device.
Smart Images
Figure CN224175829U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of bending degree detection devices, specifically a bending degree detection device for the production of electric steering input shafts. Background Technology
[0002] The electric steering input shaft is one of the core components of an automotive electric power steering (EPS) system. It typically consists of a steering column, a torque sensor, and a steering input shaft. It is responsible for transmitting the mechanical force of the driver turning the steering wheel to the steering system. Its core functions include: transmitting the steering torque of the steering wheel to the steering mechanism through the steering column; integrating a torque sensor to monitor the steering force and direction applied by the driver in real time, providing key input signals to the electronic control unit (ECU); and working in conjunction with the steering motor to automatically adjust the amount of power assist according to vehicle speed and road conditions, achieving a light steering feel at low speeds and a stable steering feel at high speeds. This component replaces the traditional hydraulic system through mechatronics design, combining the advantages of precise control, energy saving, environmental protection, and noise reduction. It is an important execution foundation for modern intelligent driving assistance systems.
[0003] Inspecting the curvature of the electric steering input shaft is to ensure steering accuracy and system reliability, and to avoid abnormal handling or safety hazards caused by deformation. When inspecting the curvature of the electric steering input shaft, a curvature inspection device for electric steering input shaft production is required.
[0004] Existing bending detection devices for electric steering input shaft production are inconvenient for clamping, fixing, and detecting electric steering input shafts of different lengths and thicknesses, thus reducing the flexibility of the device during use, limiting its practicality. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this utility model provides a bending detection device for electric steering input shaft production, which solves the problem of inconvenience in clamping, fixing, and detecting electric steering input shafts of different lengths and thicknesses, thereby reducing the flexibility and practicality of the device during use.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a bending detection device for electric steering input shaft production, comprising a base, a bracket fixedly connected to the top of the base, a detection mechanism provided at the bottom of the bracket, an electronic slide rail fixedly connected to the bottom of the bracket, a slide groove fixedly connected to the top of the base, sliders slidably connected to both sides of the slide groove, a fixed seat fixedly connected to the top of the sliders, a clamping mechanism provided on one side of the fixed seat, a bidirectional lead screw rotatably connected to the inside of the slide groove, one end of the bidirectional lead screw passing through the inner wall of the slide groove and fixedly connected to a motor, the motor being fixedly connected to one side of the slide groove. On one side of the base, a controller is fixedly connected to the top. When detecting the bending of the electric steering input shaft, the distance between the two clamping mechanisms is first adjusted according to the length of the electric steering input shaft. Then, the two ends of the electric steering input shaft are clamped by the clamping mechanisms. After clamping, the detection mechanism moves back and forth on the electronic slide rail and detects the bending of the electric steering input shaft. When adjusting the distance between the two clamping mechanisms, the controller first starts the motor to drive the bidirectional lead screw to rotate, so that the sliders on both sides move in opposite directions in the slide groove. The clamping mechanism on the fixed seat also moves in opposite directions until the appropriate distance is adjusted.
[0009] Preferably, the detection mechanism includes a moving block slidably connected inside the electronic slide rail. A connecting rod is fixedly connected to the bottom of the moving block, and a mounting plate is fixedly connected to the bottom of the connecting rod. Fixing plates are fixedly connected to both sides of the bottom of the mounting plate. An infrared emitter is fixedly connected to the surface of one of the fixing plates, and an infrared receiver is fixedly connected to the surface of the other fixing plate. After the electric steering input shaft is fixed, the controller controls the moving block to move back and forth in the electronic slide rail, thereby causing the connecting rod, mounting plate, and fixing plates to move accordingly. Consequently, the infrared emitter and infrared receiver on the two fixing plates can move accordingly. Infrared rays are emitted by the infrared emitter and received by the infrared receiver, thereby determining the curvature of the electric steering input shaft based on the received data.
[0010] Preferably, the clamping mechanism includes a fixed shell, which is fixedly connected to one side of the fixed base. The fixed shell has a movable plate inside, and two movable plates are configured as a group, and multiple groups of movable plates are configured.
[0011] Preferably, a clamping block is rotatably connected between the tops of the two movable plates, and a telescopic rod is fixedly connected between the bottom of the clamping block and the inner wall of the fixed shell, with the extension line of the telescopic rod passing through the center of the fixed shell.
[0012] Preferably, the bottom of each of the two movable plates is rotatably connected to a movable block, the inner wall of the fixed shell is provided with a movable groove, the movable block is slidably connected to the inside of the movable groove, and the two movable blocks are symmetrically distributed relative to the telescopic rod.
[0013] Preferably, a limiting rod is fixedly connected inside the movable groove, and the movable block is slidably connected to the surface of the limiting rod.
[0014] Preferably, a spring is elastically connected between one side of the moving block and the end of the moving groove. The spring is sleeved on the outside of the limiting rod, and the two ends of the electric steering input shaft are clamped by the clamping mechanism. During clamping, the two ends of the electric steering input shaft are inserted between multiple clamping blocks. Depending on the thickness of the electric steering input shaft, the bottoms of the two moving plates will slide towards each other in the moving groove through the moving block, thereby changing the distance between the clamping block and the center of the fixed shell, and thus changing the gap between the multiple clamping blocks. This allows for the clamping of electric steering input shafts of different thicknesses. The spring's pressing action on the moving block can clamp the electric steering input shaft, and the limiting rod can prevent the moving block from detaching from the moving groove. The telescopic rod can restrict the linear movement of the clamping block. The clamping mechanism can clamp and fix electric steering input shafts of different thicknesses, improving the practicality of the device.
[0015] (III) Beneficial Effects
[0016] This utility model provides a bending detection device for electric steering input shaft production. It has the following beneficial effects:
[0017] (i) The bending detection device for electric steering input shaft production, through the setting of the clamping mechanism, can adaptively clamp electric steering input shafts of different thicknesses, and the clamping is more convenient and faster, improving the flexibility of the device during use, and does not require bolts or other fixation, making it convenient and quick to use.
[0018] (ii) The bending detection device for electric steering input shaft production, through the setting of slide groove, slider, motor and bidirectional lead screw, can adjust the distance between clamping mechanisms according to the length of electric steering input shaft, thereby enabling the detection of electric steering input shafts of different lengths and improving the practicality of the device. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the structure of the groove surface of this utility model;
[0021] Figure 3This is a schematic diagram of the structure of the testing mechanism of this utility model;
[0022] Figure 4 This is a schematic diagram of the overall structure of the clamping mechanism of this utility model;
[0023] Figure 5 This is a front sectional view of the clamping mechanism of this utility model;
[0024] Figure 6 This is a schematic diagram of the connection between the movable plate and the clamping block of this utility model;
[0025] Figure 7 This utility model Figure 5 Enlarged view of point A in the middle.
[0026] In the diagram: 1. Base; 2. Bracket; 3. Detection mechanism; 31. Moving block; 32. Connecting rod; 33. Mounting plate; 34. Fixing plate; 35. Infrared transmitter; 36. Infrared receiver; 4. Electronic slide rail; 5. Slide groove; 6. Slider; 7. Fixing seat; 8. Clamping mechanism; 81. Fixing shell; 82. Moving plate; 83. Clamping block; 84. Telescopic rod; 85. Moving block; 86. Moving groove; 87. Limiting rod; 88. Spring; 9. Bidirectional lead screw; 10. Motor; 11. Controller. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] See Figure 1-7This utility model provides a technical solution: a bending detection device for electric steering input shaft production, the structure of which includes a base 1, a bracket 2 fixedly connected to the top of the base 1, a detection mechanism 3 provided at the bottom of the bracket 2, an electronic slide rail 4 fixedly connected to the bottom of the bracket 2, a slide groove 5 fixedly connected to the top of the base 1, sliders 6 slidably connected to both sides inside the slide groove 5, a fixed seat 7 fixedly connected to the top of the sliders 6, a clamping mechanism 8 provided on one side of the fixed seat 7, a bidirectional lead screw 9 rotatably connected inside the slide groove 5, one end of the bidirectional lead screw 9 passing through the inner wall of the slide groove 5 and fixedly connected to a motor 10, the motor 10 fixedly connected to one side of the slide groove 5, and the top of the base 1... A controller 11 is fixedly connected to the side. When detecting the bending of the electric steering input shaft, the distance between the two clamping mechanisms 8 is first adjusted according to the length of the electric steering input shaft. Then, the two ends of the electric steering input shaft are clamped by the clamping mechanisms 8. After clamping, the detection mechanism 3 moves back and forth on the electronic slide rail 4 and detects the bending of the electric steering input shaft. When adjusting the distance between the two clamping mechanisms 8, the controller 11 first starts the motor 10 to drive the bidirectional lead screw 9 to rotate, so that the sliders 6 on both sides move towards each other in the slide groove 5. The clamping mechanisms 8 on the fixed seat 7 also move towards each other until the appropriate distance is adjusted.
[0029] The detection mechanism 3 includes a moving block 31, which is slidably connected to the inside of the electronic slide rail 4. A connecting rod 32 is fixedly connected to the bottom of the moving block 31, and a mounting plate 33 is fixedly connected to the bottom of the connecting rod 32. Fixing plates 34 are fixedly connected to both sides of the bottom of the mounting plate 33. An infrared emitter 35 is fixedly connected to the surface of one fixing plate 34, and an infrared receiver 36 is fixedly connected to the surface of the other fixing plate 34. After the electric steering input shaft is fixed, the controller 11 controls the moving block 31 to move back and forth in the electronic slide rail 4, so that the connecting rod 32, the mounting plate 33 and the fixing plate 34 move accordingly. Consequently, the infrared emitter 35 and the infrared receiver 36 on the two fixing plates 34 can move accordingly. The infrared emitter 35 emits infrared rays and the infrared receiver 36 receives infrared rays, thereby determining the curvature of the electric steering input shaft based on the received data.
[0030] The clamping mechanism 8 includes a fixed shell 81, which is fixedly connected to one side of the fixed base 7. The fixed shell 81 is provided with a movable plate 82 inside. Two movable plates 82 are set as a group, and multiple groups of movable plates 82 are provided.
[0031] Among them, a clamping block 83 is rotatably connected between the tops of the two movable plates 82, and a telescopic rod 84 is fixedly connected between the bottom of the clamping block 83 and the inner wall of the fixed shell 81. The extension line of the telescopic rod 84 passes through the center of the fixed shell 81.
[0032] The bottom of each of the two movable plates 82 is rotatably connected to a movable block 85. The inner wall of the fixed shell 81 is provided with a movable groove 86. The movable block 85 is slidably connected to the inside of the movable groove 86. The two movable blocks 85 are symmetrically distributed relative to the telescopic rod 84.
[0033] The movable groove 86 is fixedly connected to a limiting rod 87, and the movable block 85 is slidably connected to the surface of the limiting rod 87.
[0034] A spring 88 is elastically connected between one side of the movable block 85 and the end of the movable groove 86. The spring 88 is sleeved on the outside of the limiting rod 87. Then, the two ends of the electric steering input shaft are clamped by the clamping mechanism 8. During clamping, the two ends of the electric steering input shaft are inserted between multiple clamping blocks 83. Depending on the thickness of the electric steering input shaft, the bottoms of the two movable plates 82 will slide towards each other in the movable groove 86 through the movable block 85, thereby changing the distance between the clamping block 83 and the center of the fixed shell 81, and thus changing the gap between the multiple clamping blocks 83. This allows for the clamping of electric steering input shafts of different thicknesses. The spring 88 presses against the movable block 85 to clamp the electric steering input shaft, and the limiting rod 87 prevents the movable block 85 from detaching from the movable groove 86. The telescopic rod 84 restricts the linear movement of the clamping block 83. The clamping mechanism 8 can clamp and fix electric steering input shafts of different thicknesses, improving the practicality of the device.
[0035] Working principle: When detecting the bending of the electric steering input shaft, the distance between the two clamping mechanisms 8 is first adjusted according to the length of the electric steering input shaft. Then, the two ends of the electric steering input shaft are clamped by the clamping mechanisms 8. After clamping, the detection mechanism 3 moves back and forth on the electronic slide rail 4 and detects the bending of the electric steering input shaft.
[0036] When adjusting the distance between the two clamping mechanisms 8, the motor 10 is first started by the controller 11 to drive the bidirectional lead screw 9 to rotate, so that the sliders 6 on both sides move towards each other in the slide groove 5, and the clamping mechanisms 8 on the fixed seat 7 also move towards each other until the appropriate distance is adjusted.
[0037] Then, the two ends of the electric steering input shaft are clamped by the clamping mechanism 8. During clamping, the two ends of the electric steering input shaft are inserted between multiple clamping blocks 83. Depending on the thickness of the electric steering input shaft, the bottoms of the two moving plates 82 will slide towards each other in the moving groove 86 through the moving block 85, thereby changing the distance between the clamping block 83 and the center of the fixed shell 81, and thus changing the gap between the multiple clamping blocks 83. This allows electric steering input shafts of different thicknesses to be clamped. The spring 88 can clamp the moving block 85, and the limiting rod 87 can prevent the moving block 85 from detaching from the moving groove 86. The telescopic rod 84 can restrict the linear movement of the clamping block 83. The clamping mechanism 8 can clamp and fix electric steering input shafts of different thicknesses, improving the practicality of the device.
[0038] After the electric steering input shaft is fixed, the controller 11 controls the moving block 31 to move back and forth on the electronic slide rail 4, so that the connecting rod 32, mounting plate 33 and fixing plate 34 move accordingly. In turn, the infrared transmitter 35 and infrared receiver 36 on the two fixing plates 34 can move accordingly. The infrared transmitter 35 emits infrared rays and the infrared receiver 36 receives infrared rays, so as to determine the curvature of the electric steering input shaft based on the received data.
[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bending detection device for electric steering input shaft production, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a bracket (2), the bottom of the bracket (2) is provided with a detection mechanism (3), the bottom of the bracket (2) is fixedly connected to an electronic slide rail (4), the top of the base (1) is fixedly connected to a slide groove (5), the inside of the slide groove (5) is slidably connected to two sides of a slider (6), the top of the slider (6) is fixedly connected to a fixed seat (7), one side of the fixed seat (7) is provided with a clamping mechanism (8), the inside of the slide groove (5) is rotatably connected to a two-way lead screw (9), one end of the two-way lead screw (9) passes through the inner wall of the slide groove (5) and is fixedly connected to a motor (10), the motor (10) is fixedly connected to one side of the slide groove (5), and one side of the top of the base (1) is fixedly connected to a controller (11).
2. The bending detection device for electric steering input shaft production according to claim 1, characterized in that: The detection mechanism (3) includes a moving block (31), which is slidably connected to the inside of the electronic slide rail (4). A connecting rod (32) is fixedly connected to the bottom of the moving block (31), and a mounting plate (33) is fixedly connected to the bottom of the connecting rod (32). Fixing plates (34) are fixedly connected to both sides of the bottom of the mounting plate (33). An infrared emitter (35) is fixedly connected to the surface of one of the fixing plates (34), and an infrared receiver (36) is fixedly connected to the surface of the other fixing plate (34).
3. The bending detection device for electric steering input shaft production according to claim 1, characterized in that: The clamping mechanism (8) includes a fixed shell (81), which is fixedly connected to one side of the fixed base (7). The fixed shell (81) is provided with a movable plate (82) inside. Two movable plates (82) are set as a group, and multiple groups of movable plates (82) are provided.
4. The bending detection device for electric steering input shaft production according to claim 3, characterized in that: A clamping block (83) is rotatably connected between the tops of the two movable plates (82), and a telescopic rod (84) is fixedly connected between the bottom of the clamping block (83) and the inner wall of the fixed shell (81). The extension line of the telescopic rod (84) passes through the center of the fixed shell (81).
5. The bending detection device for electric steering input shaft production according to claim 3, characterized in that: The bottom of each of the two movable plates (82) is rotatably connected to a movable block (85). The inner wall of the fixed shell (81) is provided with a movable groove (86). The movable block (85) is slidably connected to the inside of the movable groove (86). The two movable blocks (85) are symmetrically distributed relative to the telescopic rod (84).
6. The bending detection device for electric steering input shaft production according to claim 5, characterized in that: The moving groove (86) is fixedly connected to a limiting rod (87), and the moving block (85) is slidably connected to the surface of the limiting rod (87).
7. The bending detection device for electric steering input shaft production according to claim 6, characterized in that: A spring (88) is elastically connected between one side of the movable block (85) and the end of the movable groove (86), and the spring (88) is sleeved on the outside of the limiting rod (87).