Mounting, correcting and positioning structure for semicircular magnetic core of open-loop sensor

Abstract

The utility model belongs to the technical field of electromagnetic sensors, and particularly relates to an open-loop sensor semicircular magnetic core mounting, correcting and positioning structure which comprises a shell, the shell comprises an upper shell and a lower shell connected with the upper shell, and a first arc-shaped groove and a second arc-shaped groove are formed in the upper shell and the lower shell respectively. Correction steel sheets are arranged on the inner side walls of the outer rings of the first arc-shaped groove and the second arc-shaped groove and comprise fixing sheets and correction sheets, the correction sheets are symmetrically arranged on the two sides of the fixing sheets and connected with the fixing sheets, and the correction steel sheets are bent and inclined towards the center positions of the first arc-shaped groove and the second arc-shaped groove. Through the symmetrically arranged and bent correction edges in the correction steel sheet, the magnetic core is attached to the inner side walls of the first arc-shaped groove and the second arc-shaped groove after being installed, meanwhile, the magnetic core can be automatically adjusted during installation, and the yield and the product stability are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic sensors, in particular to a semicircular magnetic core installation correction and positioning structure for an open-loop sensor. Background Art

[0002] An open-loop sensor is a sensor in a measurement system. Its working principle is to convert the measured physical quantity into an output signal. To ensure the accuracy of the open-loop sensor, the current open-loop current sensor is a clamp-shaped structure with two semicircular high-permeability magnetic cores installed inside. The two magnetic cores can be opened or closed through the clamp-shaped structure. When opened, it is to clamp the conductor being measured, and when closed, it can measure the current.

[0003] For example, an open-loop current clamp disclosed in a utility model patent with patent announcement number CN216847923U is used, including a clamp-shaped shell, in which a circular magnetic core consisting of an upper semicircular magnetic core and a lower semicircular magnetic core is installed, and N grooves are evenly spaced on the outside of the circular magnetic core, N ≥ 3, and a Hall sensor is arranged in each groove, and the output end of each Hall sensor is connected to a control chip in the open-loop current clamp, and the control chip is used to determine the current in the measured conductor according to the output signal of the Hall sensor. In order to ensure the measurement accuracy of this type of sensor, it is necessary to keep the inner wall of the semicircular magnetic core in contact with the inner wall of the groove and fix it firmly. However, in the existing manual installation process, the semicircular magnetic core is prone to deviation and insufficient contact, so there is a need for an open-loop sensor semicircular magnetic core installation correction positioning structure that is easy to produce and install and has a simple structure. Utility Model Content

[0004] In view of the above problems, the utility model proposes a semicircular magnetic core installation correction and positioning structure for an open-loop sensor, which effectively solves the problem in the prior art that manual installation of the semicircular magnetic core easily causes position preference, and the magnetic core is not firmly fitted to the inner wall of the groove.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a semi-circular magnetic core installation correction and positioning structure for an open-loop sensor, comprising a shell, the shell comprising an upper shell and a lower shell connected to the upper shell, arc groove one and arc groove two are respectively arranged in the upper shell and the lower shell, and correction steel sheets are arranged on the inner side walls of the outer rings of the arc groove one and the arc groove two, the correction steel sheets comprise a fixed sheet and a correction sheet, the correction sheets are symmetrically arranged on both sides of the fixed sheet and connected to the fixed sheet, and the correction steel sheets are bent and tilted toward the center position of the arc groove one and the arc groove two.

[0006] Furthermore, a boss is provided in the shell, and the upper side and the lower side of the fixing plate are provided with a bayonet, and the bayonet is clamped on the boss.

[0007] Furthermore, the correction steel sheet is installed in the middle position of the inner wall of the outer ring of the arc groove one and the arc groove two.

[0008] Furthermore, the upper shell is rotatably connected to the lower shell.

[0009] Furthermore, a side of the upper shell away from the rotational connection between the upper shell and the lower shell is detachably connected to the lower shell.

[0010] Furthermore, the arc groove 1 and the arc groove 2 in the upper shell and the lower shell are combined up and down to form a ring.

[0011] Furthermore, the lower shell includes an arc-shaped groove 2 and a receiving cavity provided at the lower part of the arc-shaped groove 2, and the receiving cavity is communicated with the arc-shaped groove 2.

[0012] Furthermore, fixed bases are provided on both sides of the bottom of the accommodating cavity, and fixed through holes are provided on the fixed bases.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model uses symmetrically arranged and bent correction edges in the correction steel sheet to make the magnetic core fit with the inner side walls of the first arc groove and the second arc groove after installation, and can automatically adjust the magnetic core during installation, thereby improving the yield rate and product stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a top view of the utility model;

[0017] Figure 3 for Figure 2 Enlarged view of the structure of part A in the middle.

[0018] In the figure: 1, shell; 11, upper shell; 12, lower shell; 2, arc groove 1; 3, arc groove 2; 4, correction steel sheet; 41, fixing sheet; 42, correction sheet; 5, boss; 6, bayonet; 7, accommodating cavity; 8, fixed base. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-Figure 3 As shown, a semicircular magnetic core installation correction and positioning structure of an open-loop sensor includes a shell 1, wherein the shell 1 includes an upper shell 11 and a lower shell 12 connected to the upper shell 11, wherein an arc groove 1 2 and an arc groove 2 3 are respectively provided in the upper shell 11 and the lower shell 12, wherein a correction steel sheet 4 is provided on the inner side wall of the outer ring of the arc groove 1 2 and the arc groove 2 3, wherein the correction steel sheet 4 includes a fixed sheet 41 and a correction sheet 42, wherein the fixed sheet 41 and the correction sheet 42 are integrally connected, wherein the correction sheet 42 is symmetrically arranged on both sides of the fixed sheet 41 and connected to the fixed sheet 41, wherein the correction steel sheet 4 is bent and tilted toward the center position of the arc groove 1 2 and the arc groove 2 3, and wherein the bending angle of the correction steel sheet 4 is the same.

[0021] In this embodiment, a boss 5 is disposed in the housing 1 , and a bayonet 6 is provided on the upper side and the lower side of the fixing plate 41 , and the bayonet 6 is clamped on the boss 5 .

[0022] In this embodiment, the correction steel sheet 4 is clamped in the middle position of the inner wall of the outer ring of the arc groove 1 2 and the arc groove 2 3 .

[0023] In this embodiment, a rotating connection portion is provided on the left side of the upper shell 11 and the lower shell 12 , and a hinge shaft is passed through the rotating connection portion, and the upper shell 11 can rotate along the hinge shaft.

[0024] In this embodiment, the upper shell 11 is detachably connected to the lower shell 12 by installing screws on the right side away from the side where the upper shell 11 is rotatably connected to the lower shell 12.

[0025] In this embodiment, the arc groove 1 2 and the arc groove 2 3 in the upper shell 11 and the lower shell 12 are combined into a ring shape from top to bottom.

[0026] In this embodiment, the lower shell 12 includes an arc-shaped slot 2 3 and a receiving chamber 7 integrally connected to the lower portion of the arc-shaped slot 2 3 , and the upper portion of the receiving chamber 7 is communicated with the arc-shaped slot 2 3 .

[0027] In this embodiment, fixed bases 8 are disposed on both sides of the bottom of the accommodating cavity 7 , and fixed through holes are formed on the fixed bases 8 .

[0028] When the utility model is in use, the lower part of the correction steel sheet 4 is clamped on the boss 5 provided in the shell 1. When the semicircular magnetic core is installed, the outer arc surface of the magnetic core is abutted against the correction sheet 42 and the correction sheet 42 is squeezed, so that the magnetic core is clamped in the arc groove 1 2 and the arc groove 2 3. At this time, the correction sheet 42 of the correction steel sheet 4 is affected by the stress, pushing the magnetic core so that the position of the magnetic core is automatically adjusted to the appropriate position and the inner side wall of the magnetic core is fitted with the inner side wall of the arc groove 1 2 and the arc groove 2 3 to complete the positioning and installation.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A semicircular magnetic core installation correction and positioning structure for an open-loop sensor, characterized in that: The invention comprises a shell, wherein the shell comprises an upper shell and a lower shell connected to the upper shell, wherein arc groove one and arc groove two are respectively arranged in the upper shell and the lower shell, and correction steel sheets are arranged on the inner side walls of the outer rings of the arc groove one and the arc groove two, and the correction steel sheets comprise a fixed sheet and a correction sheet, wherein the correction sheets are symmetrically arranged on both sides of the fixed sheet and connected to the fixed sheet, and the correction steel sheets are bent and tilted toward the center positions of the arc groove one and the arc groove two.

2. The semicircular magnetic core installation correction and positioning structure for an open-loop sensor according to claim 1, characterized in that: A boss is arranged in the shell, and the upper side and the lower side of the fixing plate are provided with a bayonet, and the bayonet is clamped on the boss.

3. The semicircular magnetic core installation correction and positioning structure for an open-loop sensor according to claim 1, characterized in that: The correction steel sheet is installed at the middle position of the inner wall of the outer ring of the arc groove 1 and the arc groove 2.

4. The semicircular magnetic core installation correction and positioning structure for an open-loop sensor according to claim 1, characterized in that: The upper shell is rotatably connected to the lower shell.

5. The semicircular magnetic core installation correction and positioning structure for an open-loop sensor according to claim 4, characterized in that: The upper shell is detachably connected to the lower shell at one side away from the rotational connection between the upper shell and the lower shell.

6. The semicircular magnetic core installation correction and positioning structure for an open-loop sensor according to claim 5, characterized in that: The arc groove 1 and the arc groove 2 in the upper shell and the lower shell are combined up and down to form a ring.

7. The semicircular magnetic core installation correction and positioning structure for an open-loop sensor according to claim 1, characterized in that: The lower shell includes an arc-shaped groove 2 and a receiving cavity arranged at the lower part of the arc-shaped groove 2, and the receiving cavity is communicated with the arc-shaped groove 2.

8. The semicircular magnetic core installation correction and positioning structure for an open-loop sensor according to claim 7, characterized in that: Fixed bases are arranged at both sides of the bottom of the accommodating cavity, and fixed through holes are opened on the fixed bases.

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