Shell structure of small current sensor

Abstract

The utility model discloses a miniature current sensor housing structure, which comprises a housing, a magnetic core and a circuit board assembly, the housing comprises a magnetic core installation part and a circuit board installation part, an installation column is arranged in the magnetic core installation part, the circuit board assembly is arranged on the circuit board installation part, and the magnetic core is sleeved on the installation column. The small-sized current sensor shell structure is convenient to use, and through the cooperative arrangement of the shell, the magnetic core and the circuit board assembly, on the basis of ensuring the electrical performance of a product, the size of the product is reduced, the production cost is reduced, and the product has more comprehensive competitiveness.

Description

Technical Field

[0001] The utility model relates to the technical field of current sensors, and particularly relates to a housing structure of a small current sensor. Background Art

[0002] A current sensor is a type of magnetic sensor that can transform the information of the measured current into a signal that meets the requirements of information transmission, processing, storage, display, recording, control, etc. according to certain rules. Among them, the Hall current sensor is an important type of current sensor. Currently, the market competition of this type of sensor is fierce. The existing current sensors are relatively large in size, not only occupying more space, but also having a higher cost.

[0003] Based on the above situation, the utility model proposes a housing structure of a small current sensor, which can effectively solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a housing structure of a small current sensor. The housing structure of the small current sensor of the utility model is convenient to use. Through the cooperative setting among the housing, the magnetic core and the circuit board assembly, on the basis of ensuring the electrical performance of the product, the volume of the product is reduced, the production cost is lowered, and the product has stronger comprehensive competitiveness.

[0005] The utility model is realized by the following technical solutions:

[0006] A housing structure of a small current sensor includes a housing, a magnetic core and a circuit board assembly. The housing includes a magnetic core installation part and a circuit board installation part. An installation post is arranged in the magnetic core installation part. The circuit board assembly is arranged in the circuit board installation part, and a magnetic core is sleeved on the installation post.

[0007] The purpose of the utility model is to provide a housing structure of a small current sensor. The housing structure of the small current sensor of the utility model is convenient to use. Through the cooperative setting among the housing, the magnetic core and the circuit board assembly, on the basis of ensuring the electrical performance of the product, the volume of the product is reduced, the production cost is lowered, and the product has stronger comprehensive competitiveness.

[0008] Preferably, the housing includes a housing main body and an upper cover. A clamping groove is arranged on the housing main body, and a limiting fastener is arranged on the upper cover. The limiting fastener is snap-connected with the clamping groove.

[0009] Preferably, a fixing groove is arranged on the surface of the housing.

[0010] Preferably, part of the structures of the magnetic core installation part and the circuit board installation part overlap.

[0011] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0012] The housing structure of the small current sensor of the present utility model is convenient to use. Through the cooperation among the housing, the magnetic core and the circuit board assembly, on the basis of ensuring the electrical performance of the product, the volume of the product is reduced, the production cost is lowered, and the product has more comprehensive competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded structural schematic diagram of the present utility model;

[0014] Figure 2 It is a structural schematic diagram of the first perspective of the present utility model;

[0015] Figure 3 It is a structural schematic diagram of the housing main body of the present utility model;

[0016] Figure 4 It is a structural schematic diagram of the upper cover of the present utility model;

[0017] Figure 5 It is a structural schematic diagram of the second perspective of the present utility model;

[0018] Figure 6 It is a structural schematic diagram of the third perspective of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the preferred implementation scheme of the present utility model will be described below in conjunction with specific embodiments. However, it should be understood that the drawings are only for illustrative purposes and cannot be construed as a limitation to this patent; in order to better illustrate this embodiment, some components in the drawings will be omitted, enlarged or reduced, which do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as a limitation to this patent.

[0020] Technical features such as the magnetic core and the circuit board assembly in the present utility model (components / elements constituting the present utility model), unless otherwise specified, are obtained from conventional commercial channels or prepared by conventional methods. Their specific structures, working principles, and possible control methods and spatial arrangement methods adopt the conventional selections in the art and should not be regarded as the innovative points of the present utility model. For those skilled in the art, it is understandable, and the present utility model patent will not be further specifically elaborated.

[0021] Embodiment 1:

[0022] As Figures 1 to 6As shown in the figure, the present utility model provides a housing structure for a small current sensor, which includes a housing 1, a magnetic core 2, and a circuit board assembly 3. The housing 1 includes a magnetic core mounting portion 11 and a circuit board mounting portion 12. An installation post 13 is provided in the magnetic core mounting portion 11. The circuit board assembly 3 is disposed in the circuit board mounting portion 12, and the magnetic core 2 is sleeved on the installation post 13.

[0023] The circuit board assembly 3 is composed of a printed circuit board, electronic components, and terminals. The Hall element thereon is the core of the circuit board. It is fixed in the air gap to detect the magnetic flux and can convert the magnetic signal into an electrical signal. The printed circuit board mainly realizes circuit connection, connecting the corresponding input and output pins to the terminals for users to use.

[0024] The main function of the magnetic core 2 is to concentrate the magnetic lines of force. It can concentrate the magnetic field generated by the current inside the magnetic core 2, thereby enhancing the magnetic induction intensity and enabling the sensor to detect the current more accurately.

[0025] Embodiment 2:

[0026] As Figures 1 to 6 As shown in the figure, the present utility model provides a housing structure for a small current sensor, which includes a housing 1, a magnetic core 2, and a circuit board assembly 3. The housing 1 includes a magnetic core mounting portion 11 and a circuit board mounting portion 12. An installation post 13 is provided in the magnetic core mounting portion 11. The circuit board assembly 3 is disposed in the circuit board mounting portion 12, and the magnetic core 2 is sleeved on the installation post 13.

[0027] The housing 1 includes a housing main body 4 and an upper cover 5. A card slot 41 is provided on the housing main body 4, and a limit fastener 51 is provided on the upper cover 5. The limit fastener 51 is snap-connected to the card slot 41.

[0028] Due to the above structure, the housing main body 4 and the upper cover 5 can be quickly installed.

[0029] Further, in another embodiment, a fixing groove 14 is provided on the surface of the housing 1.

[0030] The fixing groove 14 facilitates the installation and fixation of the primary side lead. The recessed position provides a space for the use of the primary side lead, which can ensure that the primary side lead of the sensor can be correctly connected to other circuits or devices and maintain a stable connection at the same time. It can provide mechanical support to prevent the lead from loosening or falling off during use, thereby ensuring the accuracy of measurement.

[0031] Further, in another embodiment, the magnetic core mounting portion 11 and the circuit board mounting portion 12 have partially overlapping structures.

[0032] Large-area injection molding has its own disadvantages. The most typical ones are the appearance of indentations and bubbles. This kind of deformation is mainly due to the inherent characteristics of the plastic material, as well as the inconsistent wall thickness and outer surface cooling rate. This deformation not only causes difficulties in assembly but also easily leads to out-of-tolerance product dimensions, affecting the product qualification rate. Therefore, during the design process of this structure, it is designed as a staggered combination of two structures with different shapes, avoiding the disadvantage of easy deformation during large-plane injection molding and reducing space waste.

[0033] Based on the description and drawings of the present utility model, those skilled in the art can easily manufacture or use the small current sensor housing structure of the present utility model and can achieve the positive effects recorded in the present utility model.

[0034] Unless otherwise clearly specified and defined, in the present utility model, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms used to describe the orientation or positional relationship in the present utility model are only for illustrative purposes and cannot be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood in combination with the drawings and according to specific circumstances.

[0035] Unless otherwise clearly specified and defined, in the present utility model, if there are terms such as "set", "connected" and "connected", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] The above is only a preferred embodiment of the present utility model and does not impose any form of limitation on the present utility model. Any simple modification or equivalent change made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A small current sensor housing structure, characterized in that: It comprises a shell, a magnetic core and a circuit board assembly. The shell comprises a magnetic core mounting portion and a circuit board mounting portion. A mounting column is arranged in the magnetic core mounting portion. The circuit board assembly is arranged in the circuit board mounting portion. The magnetic core is sleeved on the mounting column.

2. The housing structure of the small current sensor according to claim 1, characterized in that: The shell comprises a shell body and an upper cover, the shell body is provided with a card slot, the upper cover is provided with a limit fastener, and the limit fastener is buckled and connected with the card slot.

3. The housing structure of the small current sensor according to claim 1, characterized in that: A fixing groove is provided on the surface of the shell.

4. The housing structure of the small current sensor according to claim 1, characterized in that: The magnetic core mounting portion and the circuit board mounting portion have partial structural overlap.

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