Closed-loop current sensor
By designing a manual disassembly system with clamping assembly and torsion spring mechanism, the problem of inconvenience of existing closed-loop current sensors is solved, and the convenience of toolless disassembly and maintenance is achieved.
Patent Information
- Application Number
- CN202323478529.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2033-12-20
AI Technical Summary
The existing closed-loop current sensors require a screwdriver when disassembling, which makes it inconvenient to inspect the internal Hall components.
A closed-loop current sensor including a base, a first housing and a second housing is designed. Through the clamping assembly and a torsion spring mechanism, the cylinder and torsion spring are rotated by a handwheel to drive the return of the cylinder and torsion spring to realize the first housing and the second housing. Disassemble, exposing the internal Hall elements.
The internal Hall components can be easily inspected without the help of other tools, improving the maintenance convenience and efficiency of the equipment.
Smart Images
Figure CN222439575U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of current sensors, in particular to a closed-loop current sensor. Background Art
[0002] The Hall current sensor is based on the magnetic balance Hall principle. According to the Hall effect principle, when the current Ic is passed through the control current end of the Hall element and a magnetic field with a magnetic induction intensity of B is applied in the normal direction of the Hall element plane, an electric potential VH will be generated perpendicular to the current and magnetic field. It is called the Hall potential, and its magnitude is proportional to the product of the control current I and the magnetic induction intensity B. That is, there is a formula where: K is the Hall coefficient, which is determined by the material of the Hall element; I is the control current; B is the magnetic induction intensity; VH is the Hall potential.
[0003] After searching, it is found that the existing closed-loop current sensor in the prior art is fixed to other devices by means of screws, and its housing is also fixed by screws. A screwdriver is required for disassembly, which makes it inconvenient to inspect and repair the internal Hall element. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a closed-loop current sensor for convenient maintenance of Hall elements.
[0005] In order to solve the above-mentioned problem, the utility model proposes a technical solution: a closed-loop current sensor, including a shell with a Hall element arranged inside, the shell including a base and a first shell and a second shell rotatably connected to each other, a placement groove plugged into the first shell and the second shell is arranged at the top of the base, a clamping assembly clamped with the first shell and the second shell is arranged on the base, the clamping assembly includes two clamping plates slidably connected to the base and respectively clamped to the first shell and the second shell, a rotating shaft rotatably connected to the base, two cylinders located on the rotating shaft, and a torsion spring sleeved on the rotating shaft, the two clamping plates are provided with a slope at one end close to each other, a connecting rod is arranged at the bottom end of the clamping plate, and a spiral groove slidably connected to the connecting rod is arranged on the cylinder.
[0006] As an improvement, the rotation connection point between the first shell and the second shell is located at the top of the first shell and the second shell.
[0007] As an improvement, the bottom ends of the first shell and the second shell are both in the shape of quadrangular prisms.
[0008] As an improvement, a plurality of mounting holes are provided in the base.
[0009] As an improvement, the first shell and the second shell are both provided with a clamping groove that is clamped with the clamping plate at one end away from each other.
[0010] As an improvement, the rotating shaft passes through the base, and a hand wheel is provided at one end of the rotating shaft.
[0011] As an improvement, the two ends of the torsion spring are respectively connected to the rotating shaft and the base.
[0012] The beneficial effects of the utility model are as follows: the utility model can limit the first shell and the second shell that are rotatably connected to each other through the base, and can fix the first shell, the second shell and the base through the clamping assembly, so as to effectively protect the internal Hall element, and the fixation can be released by twisting the hand wheel, so that the first shell and the second shell can be opened conveniently, thereby facilitating the inspection and maintenance of the internal Hall element without the aid of other tools. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional schematic diagram of the utility model;
[0014] Figure 2 It is a side view structural schematic diagram of the utility model;
[0015] Figure 3 It is a top view schematic diagram of the utility model;
[0016] Figure 4 It is a three-dimensional schematic diagram of the base of the utility model;
[0017] Figure 5 This is a schematic diagram of the connection of the rotating shaft of the utility model;
[0018] Figure 6 It is an enlarged schematic diagram of point A of the present utility model.
[0019] 1. Second shell; 2. First shell; 3. Base; 4. Mounting hole; 5. Hand wheel; 6. Snap-on plate; 7. Placement groove; 8. Cylinder; 9. Spiral groove; 10. Rotating shaft; 11. Torsion spring; 12. Slope. DETAILED DESCRIPTION
[0020] The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.
[0021] A closed-loop current sensor, comprising a housing with a Hall element arranged therein, the housing comprising a base 3 and a first housing 2 and a second housing 1 rotatably connected to each other, a plurality of mounting holes 4 being arranged in the base 3 for convenient insertion of screws, a rotation connection point between the first housing 2 and the second housing 1 being located at the top of the first housing 2 and the second housing 1, the bottom ends of the first housing 2 and the second housing 1 being both in the shape of a quadrangular prism, a placement slot 7 being arranged at the top of the base 3 for plugging with the first housing 2 and the second housing 1;
[0022] The base 3 is provided with a clamping assembly that is clamped with the first shell 2 and the second shell 1. The clamping assembly includes two clamping plates 6 that are slidably connected to the base 3 and are respectively clamped with the first shell 2 and the second shell 1, a rotating shaft 10 that is rotatably connected to the base 3, two cylinders 8 located on the rotating shaft 10, and a torsion spring 11 sleeved on the rotating shaft 10. The two clamping plates 6 are provided with a slope 12 at one end close to each other, a connecting rod is provided at the bottom end of the clamping plate 6, and a spiral groove 9 that is slidably connected to the connecting rod is provided on the cylinder 8. The first shell 2 and the second shell 1 are provided with a clamping groove that is clamped with the clamping plate 6 at one end away from each other. The rotating shaft 10 passes through the base 3, and a handwheel 5 is provided at one end of the rotating shaft 10 to facilitate the rotation of the rotating shaft 10. The two ends of the torsion spring 11 are respectively connected to the rotating shaft 10 and the base 3 to facilitate the reset of the rotating shaft 10.
[0023] Working principle: Figure 1 As shown, screw through the mounting hole 4 and fix it to other equipment to complete the installation of the device. When maintenance is required, Figure 6 As shown, the rotating shaft 10 is rotated by the hand wheel 5, and the rotating shaft 10 drives the cylinder 8 to rotate. The cylinder 8 drives the connecting rod away from the first housing 2 and the second housing 1 through the spiral groove 9, and the connecting rod drives the two clamping plates 6 away from the first housing 2 and the second housing 1 respectively. The torsion spring 11 is twisted and stored by the rotating shaft 10. The first housing 2 and the second housing 1 can be removed by lifting them up without the need to use tools to remove them together with the base 3. The hand wheel 5 is released, and the torsion spring 11 drives the rotating shaft 10 to reset, so that the clamping plate 6 is reset. The first housing 2 or the second housing 1 is rotated around the rotation connection point between the first housing 2 and the second housing 1 to fully expose the internal Hall element, which is convenient for maintenance.
[0024] After the inspection is completed, the first shell 2 and the second shell 1 are merged around the rotation connection point between the first shell 2 and the second shell 1, and then the first shell 2 and the second shell 1 are inserted into the placement groove 7. Initially, the first shell 2 and the second shell 1 squeeze the slope 12 to retract the clamping plate 6 into the base 3, and the clamping plate 6 cooperates with the spiral groove 9 through the connecting rod to rotate the cylinder 8, and the torsion spring 11 twists and stores energy. When the bottom ends of the first shell 2 and the second shell 1 are against the base 3, the torsion spring 11 drives the rotating shaft 10 to reset, so that the clamping plate 6 is inserted into the clamping groove, thereby fixing the first shell 2 and the second shell 1.
[0025] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. A closed-loop current sensor, comprising a housing with a Hall element disposed therein, characterized in that: The housing comprises a base (3) and a first shell (2) and a second shell (1) which are rotatably connected to each other. A placement groove (7) which is plugged into the first shell (2) and the second shell (1) is provided at the top of the base (3). A clamping assembly which is clamped into the first shell (2) and the second shell (1) is provided on the base (3). The clamping assembly comprises two clamping plates (6) which are slidably connected to the base (3) and are respectively clamped into the first shell (2) and the second shell (1), and a rotating shaft (10) which is rotatably connected to the base (3). ), two cylinders (8) located on the rotating shaft (10), a torsion spring (11) sleeved on the rotating shaft (10), the two clamping plates (6) are provided with a slope (12) at one end close to each other, a connecting rod is provided at the bottom end of the clamping plate (6), and a spiral groove (9) slidably connected to the connecting rod is provided on the cylinder (8), the rotation connection point between the first shell (2) and the second shell (1) is located at the top end of the first shell (2) and the second shell (1), and the bottom ends of the first shell (2) and the second shell (1) are both in the shape of a quadrangular prism.
2. A closed-loop current sensor according to claim 1, characterized in that: A plurality of mounting holes (4) are provided in the base (3).
3. A closed-loop current sensor according to claim 1, characterized in that: The first housing (2) and the second housing (1) are both provided with a clamping groove at one end away from each other for clamping with the clamping plate (6).
4. A closed-loop current sensor according to claim 1, characterized in that: The rotating shaft (10) passes through the base (3), and a hand wheel (5) is provided at one end of the rotating shaft (10).
5. A closed-loop current sensor according to claim 1, characterized in that: The two ends of the torsion spring (11) are respectively connected to the rotating shaft (10) and the base (3).