Current sensor convenient to assemble

Abstract

The utility model discloses a current sensor convenient to assemble, and relates to the technical field of current sensors. The Hall sensor comprises an annular main shell, an annular magnetic core, a Hall element and an upper cover shell, wherein the annular magnetic core is clamped and matched with the annular main shell; and the upper cover shell is clamped and matched with the annular main shell. The pressing plates are sequentially pressed, the elastic spring is compressed, the clamping plate is driven to slide on the bearing plate, in the sliding process, the two clamping hooks are gradually in sliding contact with the inner wall of the rectangular frame, and in the contact process, the two clamping hooks deform to get close to each other till the two clamping hooks penetrate through the rectangular frame. And after the pressing plate is clamped with one end of the rectangular frame, the pressing plate is loosened, and the Hall element and the annular magnetic core placed in the annular main shell are assembled and fixed, so that the assembly process of the whole current sensor is realized, the difficulty of the whole assembly process is reduced, and the assembly process of the whole current sensor is simplified.

Description

Technical Field

[0001] The utility model belongs to the technical field of current sensors, and in particular relates to a current sensor which is easy to assemble. Background Art

[0002] A current sensor is a sensor device for detecting current, which includes a magnetic core having at least one gap and a Hall element arranged therein.

[0003] The invention discloses a current sensor and a method for assembling the current sensor. The invention also relates to a current sensor having such a sensor assembly and a magnetic core, wherein the magnetic core has at least one gap, and a retainer is arranged in the gap, so that the Hall element extends perpendicular to the direction along which the magnetic field line passes through the gap. The invention also relates to a retainer for such a current sensor, wherein the retainer is characterized in that it is made of a mechanically hard non-magnetic material, preferably hard plastic or synthetic glass.

[0004] However, although the above-mentioned related technologies solve the problem of the stability of the spatial position relationship between the gap width and the Hall element, the entire assembly process is difficult, inconvenient to assemble and install, and the entire assembly process is too cumbersome. Utility Model Content

[0005] The utility model aims to provide a current sensor which is easy to assemble, and solves the problems in the above process by designing an annular main shell, an annular magnetic core, a Hall element and an upper cover shell.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a current sensor which is easy to assemble, comprising an annular main shell, an annular magnetic core, a Hall element and an upper cover shell. The annular magnetic core is snap-fitted with the annular main shell; the upper cover shell is snap-fitted with the annular main shell.

[0008] A receiving groove is arranged inside the annular main housing; the Hall element is plugged into and matched with the receiving groove.

[0009] A rectangular frame is fixed on the peripheral side surface of the annular main shell in a circumferential array.

[0010] A number of receiving plates are fixed to the side surface of the upper cover shell in a circular array; two symmetrical guide cylinders are connected to the bottom of the receiving plate; elastic springs are fixed to the bottom of the two guide cylinders; a guide column is fixed to one end of the elastic spring; a pressing plate is fixed to one end of the guide column; a clamping plate is fixed to the center position of one side of the pressing plate between the two guide cylinders; two symmetrical hooks are fixed to the bottom of the clamping plate; the clamping plate passes through the receiving plate, and the two are slidably matched; the clamping plate and the rectangular frame are slidably matched; the hooks and the rectangular frame are snap-fitted.

[0011] As a preferred technical solution of the utility model, a plurality of positioning slots are provided in a circular array on the inner bottom of the annular main shell; the number of the positioning slots is four.

[0012] As a preferred technical solution of the utility model, a plurality of positioning blocks are fixed in a circular array on one side of the annular magnetic core; the number of the positioning blocks is four; and the positioning blocks are engaged with the positioning slots.

[0013] As a preferred technical solution of the utility model, a plurality of accommodating holes are provided at the bottom of the upper cover shell; the accommodating holes are plugged and matched with the lead ends of the Hall element.

[0014] As a preferred technical solution of the utility model, a current indicator is installed on one side of the upper cover shell.

[0015] The utility model has the following beneficial effects:

[0016] The utility model compresses the elastic spring by pressing a plurality of pressing plates in sequence, and drives the card plate to slide on the receiving plate. During the sliding process, the two hooks gradually slide and contact with the inner wall of the rectangular frame. During the contact process, the two hooks deform and approach each other until the two hooks pass through the rectangular frame and are mutually engaged with one end of the rectangular frame. The pressing plate is then released, and the Hall element placed inside the annular main shell and the annular magnetic core are assembled and fixed, thereby realizing the assembly process of the entire current sensor, reducing the difficulty of the entire assembly process, and simplifying the assembly process of the entire current sensor.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 The utility model is a schematic diagram of the structure of a current sensor which is easy to assemble.

[0020] Figure 2 It is a structural schematic diagram of the annular main shell.

[0021] Figure 3 for Figure 2 Front view of .

[0022] Figure 4 It is a structural schematic diagram of a ring core.

[0023] Figure 5 This is a schematic diagram of the structure of the Hall element.

[0024] Figure 6 It is a structural schematic diagram of the upper cover shell.

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the upper cover shell.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1-annular main shell, 2-annular magnetic core, 3-Hall element, 4-upper cover shell, 101-accommodating groove, 102-rectangular frame, 103-positioning slot, 201-positioning block, 401-receiving plate, 402-guide cylinder, 403-elastic spring, 404-guide column, 405-pressing plate, 406-card plate, 407-hook, 408-accommodating hole, 409-current indicator. DETAILED DESCRIPTION

[0028] 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 of 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. Specific embodiment one:

[0030] See also Figure 1-7As shown, the utility model is a current sensor that is easy to assemble, including an annular main shell 1, an annular magnetic core 2, a Hall element 3 and an upper cover shell 4; the annular magnetic core 2 is snap-fitted with the annular main shell 1; the upper cover shell 4 is snap-fitted with the annular main shell 1; a receiving groove 101 is arranged inside the annular main shell 1; the Hall element 3 is plug-fitted with the receiving groove 101; a rectangular frame 102 is fixed to the side surface of the annular main shell 1 in a circumferential array; a plurality of receiving plates 401 are fixed to the side surface of the upper cover shell 4 in a circumferential array; the bottom of the receiving plate 401 is connected to a symmetrical two guide cylinders 402; elastic springs 403 are fixed to the bottom of the two guide cylinders 402; a guide column 404 is fixed to one end of the elastic spring 403; a pressing plate 405 is fixed to one end of the guide column 404; a clamping plate 406 is fixed to the center position of one side of the pressing plate 405 between the two guide cylinders 402; two symmetrical hooks 407 are fixed to the bottom of the clamping plate 406; the clamping plate 406 passes through the receiving plate 401, and the two are slidably matched; the clamping plate 406 is slidably matched with the rectangular frame 102; the hooks 407 are snap-fitted with the rectangular frame 102.

[0031] A specific application of this embodiment is:

[0032] The annular magnetic core 2 is placed inside the annular main housing 1, and then the semiconductor end of the Hall element 3 is plugged into the accommodating groove 101 provided inside the annular main housing 1, and then the lead end of the Hall element 3 is passed through the accommodating hole 408 opened at the bottom of the upper cover shell 4. At the same time, the upper cover shell 4 is sleeved on the outside of the annular main housing 1, and a plurality of pressing plates 405 are pressed in sequence to compress the elastic springs 403 fixed at the bottom of the two guide cylinders 402, and drive the card plate 406 fixed on one side of the pressing plate 405 to slide on the receiving plate 401. During the sliding process, the card plate 406 is 06, the two hooks 407 fixed at the bottom gradually slide and contact with the inner wall of the rectangular frame 102 on the side of the annular main shell 1. During the contact process, the two hooks 407 deform and approach each other until the two hooks 407 pass through the rectangular frame 102 and engage with each other at one end of the rectangular frame 102. Then, the pressing plate 405 can be released, and the Hall element 3 and the annular magnetic core 2 placed inside the annular main shell 1 are assembled and fixed, thereby realizing the assembly process of the entire current sensor, reducing the difficulty of the entire assembly process, and simplifying the assembly process of the entire current sensor. Specific embodiment 2:

[0034] Based on the specific embodiment 1, the difference of this embodiment is that:

[0035] like Figure 1-7As shown, a plurality of positioning slots 103 are provided in a circular array at the bottom of the annular main shell 1; the number of the positioning slots 103 is four; a plurality of positioning blocks 201 are fixed in a circular array on one side of the annular magnetic core 2; the number of the positioning blocks 201 is four; the positioning blocks 201 are snap-fitted with the positioning slots 103; a plurality of accommodating holes 408 are provided in the bottom of the upper cover shell 4; the accommodating holes 408 are plug-fitted with the lead ends of the Hall element 3; a current indicator 409 is installed on one side of the upper cover shell 4.

[0036] A specific application of this embodiment is:

[0037] The four positioning blocks 201 fixed in a circular array on one side of the annular magnetic core 2 are engaged with the four positioning slots 103 opened in a circular array at the bottom of the annular main shell 1 to fix the annular magnetic core 2 and prevent the annular magnetic core 2 from shaking and disturbing the magnetic field. Then, the semiconductor end of the Hall element 3 is inserted into the accommodating slot 101 set inside the annular main shell 1, and then the lead end of the Hall element 3 is passed through the accommodating hole 408 opened at the bottom of the upper cover shell 4, and connected to an external power supply for power supply. A current indicator 409 is installed on one side of the upper cover shell 4 to facilitate the user to determine the direction of installing the current sensor. In addition, the current sensor is an overall rectangular structure, and a detection port for the wire to pass through is arranged in the middle. The magnetic field changes of the annular magnetic core 2 are sensed by the Hall element 2, and the current flowing through the wire is finally obtained.

[0038] The working principle of the utility model is:

[0039] The annular magnetic core 2 is placed inside the annular main shell 1, and the annular magnetic core 2 is fixed by mutually engaging four positioning blocks 201 fixed in a circumferential array on one side of the annular magnetic core 2 with four positioning slots 103 opened in a circumferential array at the bottom of the annular main shell 1, and then the semiconductor end of the Hall element 3 is inserted into the accommodating slot 101 set inside the annular main shell 1, and then the lead end of the Hall element 3 is passed through the accommodating hole 408 opened at the bottom of the upper cover shell 4, and connected to the external power supply for power supply, at the same time, the upper cover shell 4 is sleeved on the outside of the annular main shell 1, and multiple pressing plates 405 are pressed in turn to compress the elastic spring 403 fixed at the bottom of the two guide cylinders 402, and drive the pressing plate 405 to press the pressing plate 405. The card plate 406 fixed on one side of the pressure plate 405 slides on the receiving plate 401. During the sliding process, the two hooks 407 fixed on the bottom of the card plate 406 gradually slide and contact with the inner wall of the rectangular frame 102 on the side of the annular main shell 1. During the contact process, the two hooks 407 deform and approach each other until the two hooks 407 pass through the rectangular frame 102 and engage with each other at one end of the rectangular frame 102. Then, the pressing plate 405 can be released, and the Hall element 3 and the annular magnetic core 2 placed inside the annular main shell 1 are assembled and fixed to prevent the annular magnetic core 2 from shaking and disturbing the magnetic field, thereby realizing the assembly process of the entire current sensor, reducing the difficulty of the entire assembly process, and simplifying the assembly process of the entire current sensor.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A current sensor that is easy to assemble, comprising an annular main housing (1), an annular magnetic core (2), a Hall element (3) and an upper cover (4), characterized in that: The annular magnetic core (2) is snap-fitted with the annular main shell (1); the upper cover shell (4) is snap-fitted with the annular main shell (1) The annular main housing (1) is provided with a receiving groove (101) installed inside; the Hall element (3) is plugged into and matched with the receiving groove (101); A rectangular frame (102) is fixed on the circumferential side surface of the annular main shell (1) in a circumferential array; A plurality of receiving plates (401) are fixed to the circumferential side surface of the upper cover shell (4) in a circular array; the bottom of the receiving plate (401) is connected to two symmetrical guide cylinders (402); elastic springs (403) are fixed to the inner bottoms of the two guide cylinders (402); a guide column (404) is fixed to one end of the elastic spring (403); a pressing plate (405) is fixed to one end of the guide column (404); a clamping plate (406) is fixed to the center position of one side of the pressing plate (405) between the two guide cylinders (402); two symmetrical hooks (407) are fixed to the bottom of the clamping plate (406); the clamping plate (406) passes through the receiving plate (401), and the two are slidably matched; the clamping plate (406) is slidably matched with the rectangular frame (102); and the hook (407) is snap-fitted with the rectangular frame (102).

2. A current sensor that is easy to assemble according to claim 1, characterized in that: The inner bottom of the annular main housing (1) is provided with a plurality of positioning slots (103) in a circular array; the number of the positioning slots (103) is four.

3. A current sensor that is easy to assemble according to claim 2, characterized in that: A plurality of positioning blocks (201) are fixed in a circular array on one side of the annular magnetic core (2); the number of the positioning blocks (201) is four; and the positioning blocks (201) are engaged with the positioning slots (103).

4. The current sensor that is easy to assemble according to claim 1, characterized in that: The bottom of the upper cover shell (4) is provided with a plurality of accommodating holes (408); the accommodating holes (408) are plug-fitted with the lead ends of the Hall element (3).

5. The current sensor that is easy to assemble according to claim 1, characterized in that: A current indicator (409) is installed on one side of the upper cover shell (4).

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