Current sensor housing and current sensor

Abstract

The utility model relates to a current sensor housing and a current sensor, and the housing comprises a bottom housing which comprises a fixed platform and a limiting plate. The fixing table is arranged on the first surface of the bottom shell and comprises longitudinally-arranged limiting grooves and heightening plates arranged at the upper ends and the lower ends of the limiting grooves, a limiting face and a hollow groove are formed between the limiting grooves, and an opening of the hollow groove is formed in the second surface of the bottom shell and right faces the limiting face. The limiting plates are arranged side by side, the limiting plates are coplanar with the left side face and the right side face of the bottom shell respectively, the limiting plates are each provided with a U-shaped groove, the U-shaped grooves directly face the left side and the right side of the fixing table respectively, and the groove bottoms of the U-shaped grooves are as high as the table top of the fixing table. According to the utility model, the limiting surface for fixing the copper coil and the hollow groove for fixing the magnetic detection element are arranged between the two limiting grooves for fixing the magnetic core, so that the structure is compact and stable, the deviation of the magnetic detection element is avoided, the detection precision is ensured, the volume is reduced, and the cost is reduced.

Description

Technical Field

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

[0002] In the prior art, current sensors are used to detect the information of the measured current. Current sensors inherit the advantages of reliable insulation of the primary and secondary sides of the transformer, and solve the defects of the transmission transmitter, which is expensive, large in size, and needs to be equipped with a transformer. They provide opportunities for analog-to-digital conversion for automated management systems such as microcomputer detection, and are widely used. The existing current sensor housing does not have a special slot for placing magnetic induction elements, which makes the magnetic induction elements easily offset, resulting in inaccurate current testing, and the current sensor is too large in size and has a high mold opening cost. Utility Model Content

[0003] The technical problem to be solved by the utility model is that, in view of the above-mentioned defects of the prior art, a current sensor housing and a current sensor are proposed.

[0004] The utility model solves the technical problem by adopting a technical solution: a current sensor housing is provided, comprising: a bottom housing, the bottom housing comprising: a fixing platform and two limiting plates;

[0005] The fixing platform is arranged on the first surface of the bottom shell, and includes: two longitudinally arranged limiting grooves and height-increasing plates arranged at the upper and lower ends of the limiting grooves, a limiting surface and a hollow groove are arranged between the two limiting grooves, and the opening of the hollow groove is arranged on the second surface of the bottom shell, and the opening is located opposite to the limiting surface;

[0006] The two limit plates are arranged side by side, one limit plate is coplanar with the left side surface of the bottom shell, and the other limit plate is coplanar with the right side surface of the bottom shell, and each limit plate is provided with a U-shaped groove, and the U-shaped groove is respectively opposite to the left and right sides of the fixed platform, and the bottom of the U-shaped groove is at the same height as the table surface of the fixed platform.

[0007] In some embodiments, the width of the limiting surface is not less than the width of the fixing platform.

[0008] In some embodiments, the bottom housing further comprises: a baffle;

[0009] The baffle is arranged on the left and right sides of the first surface, and the baffle is in contact with one of the limiting plates respectively, and the limiting plate and the baffle are perpendicular to each other.

[0010] In some embodiments, the bottom shell further includes: a positioning block;

[0011] There are four positioning blocks, which are respectively arranged at the four corners of the second surface, and the positioning blocks are in an "L" shape.

[0012] In some embodiments, the bottom shell further includes: a support plate, the support plate is arranged at one end of the second surface close to the opening of the hollow groove, and the support plate has a "concave" structure.

[0013] In some embodiments, the bottom shell further includes: a support block, the support block is arranged at a middle portion away from one end of the support plate, and the surface of the support plate is at the same height as the support surface of the positioning block.

[0014] In some embodiments, the bottom shell further includes: 2 positioning columns, and the positioning columns are arranged at one end of the bottom shell close to the limiting plate.

[0015] In some embodiments, the bottom shell is integrally formed.

[0016] In some embodiments, it further includes: a box body and a front cover;

[0017] One end of the box body is open and is sleeved on the outside of the bottom shell;

[0018] The front cover is arranged at the opening of the box body, and includes: a positioning port, a coil hole and a strip groove. The positioning port matches the positioning column and is used for positioning and fixing the front cover. The coil hole is used to place the copper coil. The strip groove is used to allow the signal terminal on the current sensor circuit board to pass through the box body and connect with the outside world.

[0019] The utility model also provides a current sensor, comprising any one of the current sensor housings described above.

[0020] The utility model provides a limiting surface for fixing the copper coil and a hollow groove for fixing the magnetic detection element between two limiting grooves for fixing the magnetic core, so that the magnetic detection element, the magnetic core and the copper coil of the current sensor can be reasonably and compactly fixed, and the displacement is avoided by the heightening plate and the limiting plate, thereby ensuring the accuracy of the current sensor detection, reducing the volume and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0022] Figure 1 The figure shows the three-dimensional structure of the bottom shell of the current sensor housing of the utility model. Figure 1 ;

[0023] Figure 2 The figure shows the three-dimensional structure of the bottom shell of the current sensor housing of the utility model. Figure 2 ;

[0024] Figure 3 The figure shows the three-dimensional structure of the bottom shell of the current sensor housing of the utility model. Figure 3 ;

[0025] Figure 4 The figure shows the installation structure of the relevant components of the embodiment of the utility model. Figure 1 ;

[0026] Figure 5 The figure shows the installation structure of the relevant components of the embodiment of the utility model. Figure 2 ;

[0027] Figure 6 Shown is a three-dimensional structural schematic diagram of the current sensor housing of the utility model.

[0028] Description of Figure Numbers:

[0029] Bottom shell 100, fixing platform 110, limiting groove 111, heightening plate 112, limiting surface 113, hollow groove 114, limiting plate 120, U-shaped groove 121, baffle 130, supporting foot 131, positioning block 140, supporting plate 150, supporting block 160, positioning column 170;

[0030] Box body 200, front cover 210, positioning opening 211, coil hole 212, strip groove 213;

[0031] Magnetic core 310 , copper coil 320 , magnetic detection element 330 , circuit board 340 , signal terminal 341 . DETAILED DESCRIPTION

[0032] 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.

[0033] like Figure 1-Figure 3As shown in the figure, an embodiment of the present utility model provides a current sensor housing, including: a bottom case 100, the bottom case 100 includes: a fixing table 110 and two limiting plates 120, the fixing table 110 is arranged on the first surface of the bottom case 100, and includes: two longitudinally arranged limiting grooves 111 and heightening plates 112 arranged at the upper and lower ends of the limiting grooves 111. There are a total of 4 heightening plates 112. A limiting surface 113 and a hollow groove 114 are arranged between the two limiting grooves 111. Among them, the opening of the hollow groove 114 is arranged on the second surface of the bottom case 100, and the opening position is opposite to the limiting surface 113; the two limiting plates 120 are arranged side by side, one limiting plate 120 is coplanar with the left side surface of the bottom case 100, and the other limiting plate 120 is coplanar with the right side surface of the bottom case 100. Each limiting plate 120 is provided with a U-shaped groove 121, and the U-shaped grooves 121 are respectively opposite to the left and right sides of the fixing table 110, and the bottom of the U-shaped groove 121 is at the same height as the table top of the fixing table 110.

[0034] Specifically, as Figure 4-Figure 5 shown, the fixing table 110 is arranged on the longitudinal central axis of the first surface of the bottom case 100. The fixing table 110, the limiting plate 120 and the bottom case 100 have the same axis of symmetry. The limiting groove 111 is used to fixedly place the magnetic core 310 of the current sensor. The limiting surface 113, the left and right sides of the limiting groove 111 close to the limiting plate 120 and the two U-shaped grooves 121 form a fixed placement position for the copper coil 320 of the current sensor. The hollow groove 114 is used to place the magnetic detection element 330. The magnetic detection element 330 includes but is not limited to a chip. The heightening plate 112 plays a role in fixing the copper coil 320 and preventing the copper coil 320 from directly contacting the magnetic core 310. The magnetic core 310 is of a U-shaped structure and is fixed through the limiting groove 111. The opening of the magnetic core 310 is exactly facing the limiting surface 113 and the hollow groove 114. The copper coil 320 fixed on the limiting surface 113 forms a good electromagnetic field with the magnetic core 310. The magnetic detection element 330 fixed in the hollow groove 114 is exactly in the electromagnetic field. By detecting the change of the magnetic field, the magnitude of the current passing through the copper coil 320 is determined, so as to achieve the purpose of current detection.

[0035] It should be noted that the above first surface and second surface are the front and back sides of the bottom case 100. The longitudinal direction in the present utility model refers to the direction along the long side of the bottom case 100. The upper end and the lower end point to the two short sides of the bottom case 100. The left side and the right side point to the two long sides of the bottom case 100. The left side surface and the right side surface point to the surface formed by the long side and the thickness side of the bottom case 100. The table top of the fixing table 110 refers to the table top height excluding the heightening plate 112.

[0036] Furthermore, in some embodiments, the fixing table 110 is in the shape of a "day" character or an inverted "middle" character. Among them, the width of the limiting surface 113 arranged in the middle position of the fixing table 110 is not less than the width of the fixing table 110, so as to facilitate the fixed placement of the copper coil 320 turns.

[0037] Furthermore, in some embodiments, the bottom shell 100 also includes: a baffle 130, which is arranged on the left and right sides of the first surface of the bottom shell 100, and the baffle 130 is respectively in contact with a limit plate 120, the limit plate 120 and the baffle 130 are perpendicular to each other, and a support foot 131 is provided at one end of the baffle 130 close to the limit plate 120.

[0038] Furthermore, in some embodiments, the bottom shell 100 further includes: 4 positioning blocks 140, which are respectively arranged at the four corners of the second surface. The positioning blocks 140 are "L"-shaped and are used to fix the circuit board 340 on which the current sensor is installed.

[0039] Furthermore, in some embodiments, the bottom shell 100 further includes: a support plate 150, which is disposed on the second surface at one end close to the opening of the hollow groove 114, and the support plate 150 is a "concave" structure, and the concave portion of the "concave" structure includes but is not limited to a trapezoid, and can also be a square. The height of the positioning block 140 is not higher than the lowest point of the support plate 150.

[0040] Furthermore, in some embodiments, the bottom shell 100 also includes: a support block 160, which is arranged in the middle part of one end away from the support plate 150, and the surface of the support plate 150 is at the same height as the support surface of the positioning block 140, and is used to support the circuit board 340 of the current sensor.

[0041] Furthermore, in some embodiments, the bottom shell 100 further includes: two positioning columns 170 , the positioning columns 170 are disposed at one end of the bottom shell 100 close to the limiting plate 120 , and the positioning columns 170 are used in conjunction with other components.

[0042] Furthermore, in some embodiments, the bottom shell 100 is integrally formed, which can improve production efficiency and save time and cost.

[0043] Further, in some embodiments, Figure 6 As shown, the current sensor housing of the utility model further includes: a box body 200, one end of which is open and sleeved on the outside of the bottom shell 100. The box body 200 further includes: a front cover 210, which is matched with the box body 200 and is arranged at the opening of the box body 200, including: a positioning port 211, a coil hole and a strip groove 213, wherein the positioning port 211 matches the positioning column 170 on the bottom shell 100, and is used for positioning and fixing the front cover 210, the coil hole is used to place the copper coil 320, and the strip groove 213 is used to allow the signal terminal 341 on the current sensor circuit board 340 to pass through the box body 200 and connect with the outside world.

[0044] The utility model also provides a current sensor, comprising the current sensor housing described in the embodiment of the utility model.

[0045] The utility model provides a limiting surface 113 for fixing the copper coil 320 and a hollow groove 114 for fixing the magnetic detection element 330 between the two limiting grooves 111 for fixing the magnetic core 310, so that the magnetic detection element 330, the magnetic core 310 and the copper coil 320 of the current sensor can be reasonably and compactly fixed, and the displacement is avoided by the heightening plate 112 and the limiting plate 120, thereby ensuring the accuracy of the current sensor detection, while reducing the volume and reducing the cost.

[0046] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0047] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot limit the protection scope of the utility model. All equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

[0048] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A current sensor housing, comprising: The bottom shell is characterized in that the bottom shell comprises: a fixing platform and two limiting plates; The fixing platform is arranged on the first surface of the bottom shell, and includes: two longitudinally arranged limiting grooves and height-increasing plates arranged at the upper and lower ends of the limiting grooves, a limiting surface and a hollow groove are arranged between the two limiting grooves, and the opening of the hollow groove is arranged on the second surface of the bottom shell, and the opening is located opposite to the limiting surface; The two limit plates are arranged side by side, one limit plate is coplanar with the left side surface of the bottom shell, and the other limit plate is coplanar with the right side surface of the bottom shell, and each limit plate is provided with a U-shaped groove, and the U-shaped groove is respectively opposite to the left and right sides of the fixed platform, and the bottom of the U-shaped groove is at the same height as the table surface of the fixed platform.

2. The current sensor housing according to claim 1, characterized in that: The width of the limiting surface is not less than the width of the fixing platform.

3. The current sensor housing according to claim 2, characterized in that: The bottom shell also includes: a baffle; The baffle is arranged on the left and right sides of the first surface, and the baffle is in contact with one of the limiting plates respectively, and the limiting plate and the baffle are perpendicular to each other.

4. The current sensor housing according to claim 3, characterized in that: The bottom shell also includes: a positioning block; The number of the positioning blocks is 4, which are respectively arranged at the four corners of the second surface, and the positioning blocks are "L" shaped.

5. The current sensor housing according to claim 4, characterized in that: The bottom shell further includes: a support plate, which is arranged at one end of the second surface close to the opening of the hollow groove, and the support plate is in a "concave" structure.

6. The current sensor housing according to claim 5, characterized in that: The bottom shell further comprises: a support block, which is arranged at a middle portion away from one end of the support plate, and the surface of the support plate is at the same height as the support surface of the positioning block.

7. The current sensor housing according to claim 6, characterized in that: The bottom shell further comprises: two positioning posts, and the positioning posts are arranged at one end of the bottom shell close to the limiting plate.

8. The current sensor housing according to claim 7, characterized in that: The bottom shell is integrally formed.

9. The current sensor housing according to claim 8, characterized in that: Also includes: Box body and front cover; The box body has an opening at one end and is sleeved on the outside of the bottom shell; The front cover is arranged at the opening of the box body, and includes: a positioning port, a coil hole and a strip groove. The positioning port matches the positioning column and is used for positioning and fixing the front cover. The coil hole is used to place the copper coil. The strip groove is used to allow the signal terminal on the current sensor circuit board to pass through the box body and connect with the outside world.

10. A current sensor, characterized in that: The present invention comprises a current sensor housing as described in any one of claims 1 to 9.

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