CN212872619U

CN212872619U - Current sensor

Info

Publication number: CN212872619U
Application number: CN202021422018.8U
Authority: CN
Inventors: 郑律
Original assignee: Shanghai Shenqi Semiconductor Technology Co ltd
Current assignee: Shanghai Shenqi Semiconductor Technology Co ltd
Priority date: 2020-07-19
Filing date: 2020-07-19
Publication date: 2021-04-02
Anticipated expiration: 2030-07-19

Abstract

The application discloses current sensor includes: the bottom shell is provided with an accommodating cavity with an opening; the magnet is accommodated in the accommodating cavity of the bottom shell, a fracture is arranged on the magnet, the circuit board assembly is fixedly arranged in the accommodating cavity of the bottom shell and is positioned in the fracture of the magnet, and the shell cover is connected with the bottom shell and is used for plugging and opening an opening of the accommodating cavity; the connecting terminal is fixedly connected to the circuit board assembly and at least partially penetrates through the bottom shell. The current sensor has the advantages that the structure is reasonable, and the creepage distance can be increased.

Description

Current sensor

Technical Field

The present application relates to a sensor, and more particularly, to a current sensor.

Background

Current sensor among the prior art all distributes a plurality of little magnet circumference in the bottom of drain pan basically, has the less problem of test range and creepage distance like this.

Disclosure of Invention

A current sensor, comprising: the bottom shell is provided with an accommodating cavity with an opening; the magnet is accommodated in the accommodating cavity of the bottom shell, a fracture is arranged on the magnet, the circuit board assembly is fixedly arranged in the accommodating cavity of the bottom shell and is positioned in the fracture of the magnet, and the shell cover is connected with the bottom shell and is used for plugging and opening an opening of the accommodating cavity; the connecting terminal is fixedly connected to the circuit board assembly and at least partially penetrates through the bottom shell.

Furthermore, a protrusion is formed in the accommodating cavity of the bottom shell, the outer side wall of the protrusion, the side wall of the bottom shell and the bottom wall of the bottom shell jointly enclose the accommodating cavity, and the protrusion and the shell cover are respectively provided with threading holes aligned in the circumferential direction.

Further, the hole wall used for forming the protrusion in the accommodating cavity of the bottom shell comprises a major arc wall and a U-shaped wall, the magnet is arranged around the major arc wall, and two opposite side walls of the U-shaped wall are respectively in smooth transition with ports of the major arc wall.

Furthermore, an insertion groove is formed in the accommodating cavity of the bottom shell, at least part of the circuit board assembly is accommodated in the insertion groove, and a through hole for the connection terminal to pass through is formed in the bottom of the insertion groove.

Furthermore, the inserting groove and the bottom wall of the U-shaped wall are integrally formed, and the inserting groove is located in the fracture of the magnet.

Furthermore, a pressing part for fixing the circuit board assembly on the inserting groove is formed on the inner side of the shell cover.

Furthermore, a plurality of radial ribs are formed on the bottom wall of the bottom shell around the protrusions, and all the radial ribs point to the center of the threading hole.

Further, the shell cover is detachably connected to the bottom shell in a snap-fit manner.

Furthermore, a clamping block is formed on the periphery of the opening of the bottom shell accommodating cavity, and a clamping hook matched and buckled with the clamping block is formed on the shell cover.

Furthermore, the hook comprises a connecting part which is formed on the side wall of the shell cover and extends downwards, and a hook part which is connected with the connecting part, and the connecting part is provided with a bayonet through which the clamping block passes.

Furthermore, the top of the clamping block is provided with a guide surface which is convenient for the hook part to slide downwards and be buckled.

Furthermore, both sides of the clamping block are respectively provided with a positioning groove matched with the appearance of the connecting part.

The application has the advantages that: a current sensor which has a reasonable structure and can increase the creepage distance is provided.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic diagram of an external structure of a current sensor according to an embodiment of the present application;

FIG. 2 is a schematic view of the current sensor shown in FIG. 1 viewed from another angle;

FIG. 3 is a schematic view of the current sensor shown in FIG. 1 with the cover removed;

FIG. 4 is a schematic view of the current sensor housing cover shown in FIG. 1;

fig. 5 is an exploded schematic view of the current sensor shown in fig. 1.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 5, the current sensor 100 includes: bottom shell 101, magnet 102, circuit board assembly 103, cover 104, connecting terminal 105. Among them, the circuit board assembly 103 includes a circuit board 1031 and a chip 1032.

Wherein, the bottom case 101 is formed with an accommodation cavity 1011. The magnet 102 is accommodated in the accommodating cavity 1011 of the bottom shell 101, a fracture 1021 is arranged on the magnet 102, the circuit board assembly 103 is fixedly arranged in the accommodating cavity 1011 of the bottom shell 101 and is positioned at the fracture 1021 of the magnet 102, and the bottom shell 101 is connected with the shell cover 104 and is used for plugging and opening an opening of the accommodating cavity 1011; the connection terminals 105 are fixedly connected to the circuit board assembly 103 and pass at least partially through the bottom case 101. The current sensor 100 design structure not only can increase the creepage distance, but also can expand the detection range.

Preferably, a protrusion 1012 is formed in the receiving cavity 1011 of the bottom case 101, an outer side wall of the protrusion 1012, a side wall of the bottom case 101 and a bottom wall of the bottom case 101 together define the receiving cavity 1011, and the protrusion 1012 and the case cover 104 are respectively provided with threading holes aligned in the circumferential direction. Specifically, the hole wall for forming the protrusion 1012 in the receiving cavity 1011 of the bottom case 101 includes a major arc wall 1012a around which the magnet 102 is disposed and a U-shaped wall 1012b whose two opposite side walls 1012b are respectively rounded off at the ports of the major arc wall 1012 a.

Preferably, a receiving cavity 1013 is formed in the receiving cavity 1011 of the bottom case 101, the circuit board assembly 103 is at least partially received in the receiving cavity 1013, and a through hole 1013a for passing the connection terminal 105 is opened at the bottom of the receiving cavity 1013. Specifically, plug slot 1013 is integrally formed with the bottom wall of U-shaped wall 1012b, and plug slot 1013 is located within the break in magnet 102.

Preferably, a pressing portion 1041 for fixing the circuit board assembly 103 to the insertion groove 1013 is formed inside the cover 104, and when the cover 104 is in a closed state, the pressing portion 1041 presses and fixes the circuit board assembly 103 to the insertion groove 1013.

Preferably, a plurality of radial ribs 1014 are formed on the bottom wall of the bottom shell 101 around the protrusion 1012, and the plurality of radial ribs 1014 all point to the center of the threading hole, so that the strength of the combination surface of the protrusion 1012 and the bottom wall of the bottom shell 101 is increased by the radial ribs 1014.

Preferably, the cover 104 is detachably connected to the bottom case 101 by means of a snap, specifically, a latch 1015 is formed on the outer periphery of the opening of the receiving cavity 1011 of the bottom case 101, and the cover 104 forms a hook 1042 which is matched and snapped with the latch 1015. Specifically, the hook 1042 includes a connecting portion 1042a formed on the sidewall of the housing cover 104 and extending downward, and a hook portion 1042b connected to the connecting portion 1042a, a bayonet 1042c for the fixture block 1015 to pass through is formed on the connecting portion 1042a, a guiding surface 1015a for facilitating the downward sliding and fastening of the hook portion 1042b is formed at the top of the fixture block 1015, positioning grooves 1016 matched with the connecting portion 1042a are respectively formed on two sides of the fixture block 1015, and the covering process of the housing cover 104 is smoother through the positioning grooves 1016.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A current sensor, comprising: the bottom shell is provided with an accommodating cavity with an opening;

the method is characterized in that:

the magnet is accommodated in the accommodating cavity of the bottom shell, a fracture is arranged on the magnet, the circuit board assembly is fixedly arranged in the accommodating cavity of the bottom shell and is positioned in the fracture of the magnet, and the shell cover is connected with the bottom shell and is used for plugging and opening an opening of the accommodating cavity;

the connecting terminal is fixedly connected to the circuit board assembly and at least partially penetrates through the bottom shell.

2. The current sensor of claim 1, wherein:

the bottom shell comprises a bottom shell body and is characterized in that a bulge is formed in an accommodating cavity of the bottom shell, the outer side wall of the bulge, the side wall of the bottom shell and the bottom wall of the bottom shell jointly enclose the accommodating cavity, and the bulge and the shell cover are respectively provided with a threading hole aligned in the circumferential direction.

3. The current sensor of claim 2, wherein:

the accommodating cavity of the bottom shell is used for forming the protruding hole wall and comprises a major arc wall and a U-shaped wall, the magnet is arranged around the major arc wall, and two opposite side walls of the U-shaped wall are in smooth transition to ports of the major arc wall respectively.

4. The current sensor of claim 3, wherein:

an inserting groove is formed in the accommodating cavity of the bottom shell, at least part of the circuit board assembly is accommodated in the inserting groove, and a through hole for the connecting terminal to pass through is formed in the bottom of the inserting groove.

5. The current sensor of claim 4, wherein:

the insertion groove and the bottom wall of the U-shaped wall are integrally formed, and the insertion groove is located in the fracture of the magnet.

6. The current sensor of claim 5, wherein:

the inner side of the shell cover forms a pressing part for fixing the circuit board assembly in the inserting groove.

7. The current sensor of claim 2, wherein:

the bottom wall of the bottom shell surrounds the protrusions to form a plurality of radial ribs, and the radial ribs point to the center of the threading hole.

8. The current sensor of claim 1, wherein:

the shell cover is detachably connected to the bottom shell in a buckling mode.

9. The current sensor of claim 8, wherein:

the outer peripheral side of the opening of the bottom shell accommodating cavity is provided with a clamping block, and the shell cover is provided with a clamping hook which is matched and buckled with the clamping block.

10. The current sensor of claim 9, wherein:

the clamping hook comprises a connecting part which is formed on the side wall of the shell cover and extends downwards, and a hook part which is connected with the connecting part, wherein the connecting part is provided with a bayonet through which the clamping block passes.