Fixing jig for Hall sensor test

Abstract

The utility model belongs to the field of sensor detection equipment, and particularly relates to a fixing jig for testing a Hall sensor, which comprises a test board 1, at least one wire passing hole 5 arranged at the top of the test board 1, a sensor body 4 abutted against the top of the test board 1, and a lifting adjustable fixing mechanism 6 arranged at the upper part of the test board 1. The fixing mechanism 6 comprises a fixing pressing plate 601 which is connected to the upper portion of the sensor body 4 in a pressing mode, the input end of the sensor body 4 penetrates through the fixing pressing plate 601 and extends upwards, and the top of the fixing pressing plate 601 is provided with a lifting detection assembly 7. And through the liftable detection assembly, the device can adapt to sensors with different output end lengths.

Description

Technical Field

[0001] This utility model belongs to the field of sensor testing equipment, specifically relating to a fixture for testing Hall sensors. Background Technology

[0002] Hall effect sensors are magnetic field sensors based on the Hall effect, capable of converting changes in magnetic fields into electrical signals. They are widely used in various fields, such as industrial automation, automotive electronics, consumer electronics, and medical devices. Hall effect sensors accurately measure physical quantities such as speed, position, and current by detecting magnetic field strength, and are characterized by high sensitivity, contactless operation, and strong environmental adaptability.

[0003] Hall angle sensors are commonly used angle sensors that use the Hall effect to sense angle changes. The quality of the sensor directly affects the use of equipment, so it is necessary to test the sensor regularly. However, there is currently a lack of corresponding testing devices, and the input shaft lengths of different types of Hall angle sensors are different, making testing inconvenient. Therefore, a fixture for testing Hall sensors is proposed. Utility Model Content

[0004] To address the inconvenience of detecting different types of Hall angle sensors in existing technologies, this invention provides a fixture for testing Hall sensors.

[0005] The purpose of this utility model is achieved in the following manner: a fixing fixture for testing Hall sensors includes a test platform 1, at least one wire hole 5 is provided on the top of the test platform 1, the top of the test platform 1 abuts against the sensor body 4, and a lifting and adjustable fixing mechanism 6 is provided on the upper part of the test platform 1. The fixing mechanism 6 includes a fixing plate 601 pressed against the sensor body 4, the input end of the sensor body 4 passes through the fixing plate 601 and extends upward, and a lifting and adjustable detection component 7 is provided on the top of the fixing plate 601.

[0006] Furthermore, the top of the test bench 1 is provided with at least two movable holes 2, and a positioning rod 602 is inserted into each movable hole 2. The top of the positioning rod 602 is fixedly connected to a fixing plate 601, and the bottom of the positioning rod 602 is fixedly connected to a movable plate 604. A compression spring 603 is sleeved on the positioning rod 602. One end of the compression spring 603 abuts against the movable plate 604, and the other end of the compression spring 603 abuts against the test bench 1. The bottom of the movable plate 604 is fixedly connected to one end of a drive rack 605. The drive rack 605 meshes with a drive gear 608. The drive gear 608 is fixedly connected to one end of a drive shaft 606. The other end of the drive shaft 606 passes through the test bench 1 and is fixedly connected to a handwheel 607.

[0007] Further, the detection assembly 7 comprises at least one telescopic sleeve 705 fixedly connected to the top of the fixed pressing plate 601, a telescopic rod 703 slidingly arranged at the top of the telescopic sleeve 705, a locking screw rod 704 threadedly connected to the side of the telescopic sleeve 705, the head end of the locking screw rod 704 abutting against the telescopic rod 703, a motor base 702 fixedly connected to the top of the telescopic rod 703, and a servo motor 701 fixedly connected to the top of the motor base 702, the output end of the servo motor 701 downwardly penetrating through the motor base 702 and fixedly connected to a butt block 706.

[0008] Compared with the prior art, the sensor body is fixed and pressed by the liftable and adjustable fixing mechanism, so as to adapt to sensors with different fuselage sizes, and the liftable detection assembly is used to adapt to sensors with different output end lengths. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0010] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0011] Figure 3 It is a schematic diagram of the fixing mechanism of the utility model;

[0012] Figure 4 It is a schematic diagram of the detection assembly of the utility model.

[0013] 1, test bench; 2, movable hole; 3, positioning base; 4, sensor body; 5, wire passing hole;

[0014] 6, fixing mechanism; 601, fixed pressing plate; 602, positioning rod; 603, pressing spring; 604, movable plate; 605, driving rack; 606, driving shaft; 607, hand wheel; 608, driving gear;

[0015] 7, detection assembly; 701, servo motor; 702, motor base; 703, telescopic rod; 704, locking screw rod; 705, telescopic sleeve; 706, butt block; 707, fixing screw. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] As attached Figures 1-3 As shown, a fixture for testing a Hall sensor includes a test platform 1, which is preferably a hollow columnar structure. The top of the test platform 1 is provided with at least one wire hole 5. The top of the test platform 1 abuts against the sensor body 4. An adjustable fixing mechanism 6 is provided on the upper part of the test platform 1. The fixing mechanism 6 includes a fixing plate 601 pressed against the sensor body 4. The input end of the sensor body 4 passes through the fixing plate 601 and extends upward. An adjustable detection component 7 is provided on the top of the fixing plate 601.

[0019] Most existing Hall angle sensors consist of a body, with wiring connected to the bottom of the body. The wiring passes through a wire hole 5. Preferably, a wire hole 5 is also provided on the side of the test bench 1 so that the wiring passes out of the test bench 1 to connect to an external power supply and controller. A shaft-shaped input end extends from the head end of the body. The shaft-shaped input end is provided with a snap-fit ​​groove or abutment plane for cooperating with the rotating object to detect the rotation state. A through hole is provided in the middle of the fixed pressure plate 601 for the sensor input end to pass through.

[0020] Further details are attached. Figure 3 As shown, the test bench 1 has at least two movable holes 2 on its top, preferably two, located on both sides of the sensor body 4. A positioning rod 602 is inserted into each movable hole 2 and slides vertically within the movable hole 2. All positioning rods 602 are arranged in parallel. A fixing plate 601 is fixedly connected to the top of all positioning rods 602, and a movable plate 604 is fixedly connected to the bottom of all positioning rods 602. A compression spring 603 is sleeved on the positioning rod 602. One end of the compression spring 603 abuts against the movable plate 604, and the other end of the compression spring 603 abuts against the bottom of the top plate of the test bench 1. The compression spring 603 is in a compressed state. One end of a drive rack 605 is fixedly connected to the bottom of the movable plate 604. The drive rack 605 is arranged parallel to the positioning rods 602 and meshes with a drive gear 608. The drive gear 608 is fixedly connected to one end of a drive shaft 606, and the other end of the drive shaft 606 passes through the test bench 1 and is fixedly connected to a handwheel 607.

[0021] Preferably, the test bench 1 is provided with a retainer that cooperates with the drive rack 605, such as a sliding sleeve structure fixedly connected to the bottom plate of the test bench 1. The sliding sleeve structure is slidably engaged with the drive rack 605. It is also provided with a retainer that cooperates with the drive shaft 606, such as a collar sleeved on the outside of the drive shaft 606 and not restricting the rotation of the drive shaft 606. The collar is fixedly connected to the bottom plate or inner side wall of the test bench 1 by a fixing rod.

[0022] Further details are attached. Figure 4 As shown, the detection component 7 includes at least one telescopic sleeve 705 fixedly connected to the top of the fixed pressure plate 601, preferably two, and located on both sides of the through hole on the fixed pressure plate 601 respectively. The telescopic sleeve 705 is fixedly connected to the fixed pressure plate 601 by a fixing screw 707. A telescopic rod 703 is slidably provided on the top of the telescopic sleeve 705. A locking screw 704 is threadedly connected to the side of the telescopic sleeve 705. The head end of the locking screw 704 abuts against the telescopic rod 703. A motor base 702 is fixedly connected to the top of the telescopic rod 703. A servo motor 701 is fixedly connected to the top of the motor base 702. The output end of the servo motor 701 passes downward through the motor base 702 and is fixedly connected to a docking block 706. The docking block 706 is a block structure. Depending on the sensor model, it may be plugged into or abutted against the sensor input end. The docking block 706 and the output end of the servo motor 701 are preferably designed as a detachable structure to facilitate the replacement of different models of docking blocks 706 to match different sensors.

[0023] The working process of the utility model is as follows: when in use, rotate hand wheel 607, after rotating hand wheel 607, it will drive driving shaft 606 to rotate, after driving shaft 606 rotates, it will drive driving gear 608 to rotate, since driving gear 608 is movably installed on one side of driving rack 605 through driving shaft 606, and driving gear 608 is engaged with driving rack 605, thus after driving gear 608 rotates, it will drive driving rack 605 to move upwards, after driving rack 605 moves upwards, it will drive movable plate 604 to move upwards, after movable plate 604 moves upwards, it will drive fixed pressing plate 601 on positioning rod 602 to move upwards by a distance, after fixed pressing plate 601 moves upwards by a distance, until appropriate setting space is left, place sensor body 4 on test table 1, and connect circuit through wire hole 5, after placing sensor body 4 on test table 1, hand wheel 607 can be loosened, since positioning rod 602 is movably installed on test table 1 through movable hole 2, one end of compression spring 603 abuts against movable plate 604, and the other end of compression spring 603 abuts against the top of test table 1, thus after loosening hand wheel 607, compression spring 603 will drive positioning rod 602 to move downwards, after positioning rod 602 moves downwards, it will drive fixed pressing plate 601 to move downwards, so as to compress sensor body 4 on test table 1, after compressing sensor body 4 on test table 1, butt joint block 706 will cooperate with the input shaft of sensor body 4 (according to the different models of sensors, or plug-in cooperation, or abutment cooperation), then input shaft of sensor body 4 can be driven to rotate through servo motor 701, by comparing the input angle of servo motor 701 with the angle measured by sensor body 4, whether the sensor is qualified can be quickly detected.

[0024] The above only is the preferred implementation manner of the utility model, it should be pointed out that, for the person skilled in the art, without departing from the overall concept of the utility model, still can make several changes and improvements, these also should be regarded as the protection range of the utility model.

Claims

1. A fixing jig for testing a Hall sensor, characterized by: Including test platform (1), the test platform (1) top is provided with at least one wire hole (5), the test platform (1) top abuts sensor body (4), the test platform (1) upper portion is provided with the fixed mechanism (6) of adjustable lifting, the fixed mechanism (6) includes the fixed pressing plate (601) pressed on the top of sensor body (4), the input end of sensor body (4) passes through fixed pressing plate (601) and extends upward, the top of fixed pressing plate (601) is provided with the detection assembly (7) of adjustable lifting; The detection assembly (7) includes at least one telescopic sleeve (705) fixedly connected on the top of the fixed pressing plate (601), the telescopic sleeve (705) top is slidably provided with a telescopic rod (703), the telescopic sleeve (705) side is screw connected with a locking screw (704), the locking screw (704) head end abuts the telescopic rod (703), the telescopic rod (703) top is fixedly connected with a motor base (702), the motor base (702) top is fixedly connected with a servo motor (701), the servo motor (701) output end passes through the motor base (702) downward and is fixedly connected with a butt block (706).

2. The fixing jig for testing a Hall sensor according to claim 1, wherein: The test platform (1) top is provided with at least two movable holes (2), one positioning rod (602) is arranged in each movable hole (2), the positioning rod (602) top is fixedly connected with the fixed pressing plate (601), the positioning rod (602) bottom is fixedly connected with the movable plate (604), the positioning rod (602) is sleeved with a compression spring (603), one end of the compression spring (603) abuts the movable plate (604), the other end of the compression spring (603) abuts the test platform (1), the movable plate (604) bottom is fixedly connected with one end of the drive rack (605), the drive rack (605) is engaged with the drive gear (608), the drive gear (608) is fixedly connected with one end of the drive shaft (606), the other end of the drive shaft (606) passes through the test platform (1) and is fixedly connected with a hand wheel (607).

Images