Hall sensor convenient for cementing

Abstract

The utility model discloses a Hall sensor convenient for cementing, which effectively achieves the purpose of conveniently fixing a connecting wire harness during cementing, and comprises a shell and a cover plate arranged on the rear side of the shell, a circuit board is arranged in the shell, a fixing pad is arranged between the circuit board and the inner wall of the shell, and the fixing pad is arranged on the inner wall of the shell. A placement groove is formed in the lower side of the shell, a fixing mechanism used for fixing a wire harness is arranged on the upper side of the placement groove, a placement plate matched with the placement groove is arranged on the side, close to the shell, of the cover plate, and a sealing ring fixedly connected with the cover plate is arranged on the rear side of the shell. According to the utility model, the structure is novel, the conception is ingenious, the operation is simple and convenient, the assembly of the device is effectively facilitated for workers, the operation of the workers is facilitated, the cooperation between the housing and the cover plate is tighter, the probability of pollution to the wiring harness during cementing is reduced, and the fixation of the whole device is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of sensor technology and relates to a Hall sensor that is easy to glue and bind. Background Technology

[0002] With the expansion of population and urban construction, the number of electrical devices in modern society is increasing, and power consumption is also growing. Consequently, urban power supply equipment is frequently overloaded, the power environment is deteriorating, and the problems are becoming more and more serious. Real-time monitoring of the current power status, and the ability to perform sensing detection, sensing sampling, and sensing protection in the event of hazards such as overcurrent and overvoltage, has become a current trend in power application development. Therefore, the real-time monitoring of the power environment using Hall effect sensors has emerged as a response to this need.

[0003] Encapsulation of sensors refers to the process of potting and encapsulating the internal circuitry of sensors during the manufacturing process, which requires the use of sensor potting compound.

[0004] However, because Hall sensors have interfaces on their outside, the connecting wires between the circuit board and the interface are prone to falling into the potting compound during the encapsulation process, causing contamination to the interface and the wires. This problem is quite troublesome during the sensor production and assembly process.

[0005] Patent document CN109917163A discloses a Hall current sensor, including a housing, an annular mounting part and a circuit board inside the housing, an annular iron core on the annular mounting part, a coil wound around the annular iron core and a notch, a Hall element inside the notch, the Hall element and the coil are electrically connected to the circuit board, the circuit board leads the wiring out of the housing through a row of pins, the housing also has a cooling device, the cooling device includes a thermoelectric cooler, a cooling ring, a temperature sensor, a processor and a power regulator, the thermoelectric cooler and the cooling ring are bonded by thermally conductive silicone grease, the temperature sensor, the power regulator and the thermoelectric cooler are all electrically connected to the processor, the processor is also electrically connected to the circuit board.

[0006] Patent document CN201145706Y discloses a Hall current sensor, comprising: an annular insulating housing, the inner space of which is provided for the wire to be tested to pass through; an annular iron core with a gap, encapsulated inside the insulating housing, the inner sidewall of the annular iron core surrounding the inner sidewall of the insulating housing; a Hall device disposed in the gap of the annular iron core; a circuit board carrying a detection circuit, which is electrically connected to the Hall device; and a shielding ring, encapsulated inside the insulating housing, the shielding ring being located inside the inner sidewall of the annular iron core and surrounding the inner sidewall of the insulating housing.

[0007] The structures described in the aforementioned patent documents are all assembly and installation structures commonly used by those skilled in the art. However, none of them have solved the problem of easy contamination of the interface and wiring harness during potting and encapsulation. Therefore, a Hall sensor that is easy to pot and encapsulate is needed to solve the above problems. Utility Model Content

[0008] To address the aforementioned problems, this invention proposes a Hall sensor that is easy to glue-fit, effectively solving the issues in the prior art.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A Hall sensor that is easy to glue includes a housing and a cover plate installed on the rear side of the housing. The housing has a circuit board inside, and a fixing pad is provided between the circuit board and the inner wall of the housing. The housing has a placement groove on the lower side, and a fixing mechanism for fixing a wire harness is provided on the upper side of the placement groove. The cover plate has a placement plate that is adapted to the placement groove on the side near the housing. The housing has a sealing ring that is fixedly connected to the cover plate on the rear side.

[0011] Preferably, the housing has multiple first support sleeves inside, and each first support sleeve is fixedly connected to a positioning sleeve on its upper side. The circuit board has multiple positioning holes that are adapted to the outer diameter of the positioning sleeves. The first support sleeves and positioning sleeves cooperate with each other to form a circuit board support structure.

[0012] Preferably, the front side of the cover plate is fixedly connected to a second support sleeve that corresponds one-to-one with the first support sleeve. Each second support sleeve has a sealing gasket fixedly connected to the side near the first support sleeve. Each positioning sleeve has a chamfer on the side near the second support sleeve. The sealing gasket is interference-fitted with the positioning sleeve. A limit ring is fixedly connected inside the second support sleeve.

[0013] Preferably, a sealing groove is provided in the middle of the placement groove, and a sealing block adapted to the sealing groove is fixedly connected to the outer side of the placement plate.

[0014] Preferably, the fixing mechanism includes a U-shaped block and a plurality of elastic plates fixedly connected to the middle of the U-shaped block, and each elastic plate has a fracture groove on its lower side near the U-shaped block.

[0015] Preferably, a sliding groove is provided in the middle of the U-shaped block, and a toggle block is slidably connected inside the sliding groove. Two connecting ropes are fixedly connected to the upper side of the toggle block. A through groove is provided in the middle of each elastic plate, and the two connecting ropes pass through the corresponding through grooves and are connected to a pulling block.

[0016] Preferably, a mounting plate is fixedly connected to the front side of the housing, and the mounting plate has mounting holes.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This utility model has a fixing mechanism that can limit the wire harness and the interface at the end of the wire harness during the gluing operation of the circuit board, so as to prevent the wire harness and the interface from falling into the inside of the housing during the gluing process and causing contamination to the wire harness and the interface.

[0019] 2. This utility model has an asymmetrically arranged first support sleeve and a positioning sleeve. By using multiple asymmetrically arranged first support sleeves, the probability of incorrect circuit board installation direction can be reduced. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0022] Figure 3 This is a schematic diagram showing the position of the fixing pad in this utility model.

[0023] Figure 4 This is an exploded structural diagram of the first support sleeve and the second support sleeve in this utility model.

[0024] Figure 5 This is a schematic diagram of the U-shaped block in this utility model.

[0025] Figure 6 This utility model Figure 5 A magnified view of a portion of region A in the middle.

[0026] In the diagram: 1. Housing; 2. Cover plate; 3. Circuit board; 4. Fixing pad; 5. Placement groove; 6. Placement plate; 7. Sealing ring; 8. First support sleeve; 9. Positioning sleeve; 10. Positioning hole; 11. Second support sleeve; 12. Sealing gasket; 13. Limiting ring; 14. Sealing groove; 15. Sealing block; 16. U-shaped block; 17. Elastic plate; 18. Fracture groove; 19. Sliding groove; 20. Actuating block; 21. Connecting rope; 22. Through groove; 23. Pulling block; 24. Mounting plate; 25. Mounting hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The following is in conjunction with the appendix Figures 1 to 6 The specific embodiments of this utility model will be described in further detail.

[0029] Depend on Figures 1 to 6 As shown, this utility model includes a housing 1 and a cover plate 2 installed on the rear side of the housing 1. In order to facilitate the fixing of the connecting wire harness during gluing, a circuit board 3 is provided inside the housing 1, and a fixing pad 4 is provided between the circuit board 3 and the inner wall of the housing 1. A placement groove 5 is provided on the lower side of the housing 1, and a fixing mechanism for fixing the wire harness is provided on the upper side of the placement groove 5. A placement plate 6 that is adapted to the placement groove 5 is provided on the side of the cover plate 2 near the housing 1. A sealing ring 7 that is fixedly connected to the cover plate 2 is provided on the rear side of the housing 1.

[0030] It should be noted that the circuit board 3 integrates a magnetic core for current detection. The circuit design of the internal circuit board 3 of the Hall sensor is existing technology well known to those skilled in the art, such as the circuit design involved in "Hardware Circuit Design of Closed-Loop Hall Current Sensor by Wu Xu, Wang Linsen, and Ju Peng". This application has not made any specific improvements to the circuit design. The rear side of the circuit board 3 is connected to a cable for connecting the power interface. The principle of the Hall sensor is existing technology, such as the high-precision open-loop Hall effect current sensor of model TKC-DHC. This application has made corresponding improvements to its installation and gluing structure. The rear side of the cover plate 2 is provided with a connection hole for installing the 504504AG interface. After the cover plate 2 and the 504504AG interface are connected, they are fixed and sealed by dispensing glue.

[0031] It should be noted that the fixing pad 4 is made of latex material. After the circuit board 3 is installed, it can support the circuit board 3 and the inner wall of the housing 1. During the gluing process, it can reduce the amount of glue used and also support the circuit board 3, thus playing a role in shock absorption.

[0032] During the installation of the Hall sensor, first place the fixing pad 4 inside the housing 1, then place the circuit board 3 on top of the fixing pad 4, and then glue the circuit board 3. Before gluing, first snap the wire harness on the circuit board 3 used for power connection and information transmission into the fixing mechanism, and then inject molten silicone into the inside of the housing 1. The circuit board 3 inside the housing 1 is glued using the silicone. After gluing, the fixing mechanism can be operated to vibrate the glued material, which can remove air inside the glue and improve the sealing performance of the glue. After the glue is completed, the cover plate 2 can be fitted with the housing 1 to complete the installation of the Hall sensor. At this time, the housing 1 and the cover plate 2 are sealed by the sealing ring 7 to ensure the airtightness of the inside of the housing 1.

[0033] Furthermore, by Figures 1 to 6 As shown, in order to facilitate the assembly of the device by the staff, there are multiple first support sleeves 8 inside the housing 1. Each first support sleeve 8 is fixedly connected to a positioning sleeve 9 on its upper side. The circuit board 3 is provided with multiple positioning holes 10 that are adapted to the outer diameter of the positioning sleeve 9. The first support sleeves 8 and the positioning sleeves 9 cooperate with each other to form a support structure for the circuit board 3.

[0034] In use, when installing the circuit board 3 into the inside of the housing 1, each positioning hole 10 cooperates with the corresponding positioning sleeve 9. The circuit board 3 is supported and limited by the step between the positioning sleeve 9 and the first support sleeve 8. The probability of incorrect installation direction of the circuit board 3 can be reduced by the asymmetrical arrangement of multiple first support sleeves 8.

[0035] Furthermore, by Figures 1 to 6 As shown, to facilitate operation by staff, the front side of the cover plate 2 is fixedly connected with a second support sleeve 11 corresponding to the first support sleeve 8. Each second support sleeve 11 is fixedly connected with a sealing gasket 12 on the side near the first support sleeve 8. The sealing gasket 12 is a hollow annular structure made of rubber. Each positioning sleeve 9 has a chamfer on the side near the second support sleeve 11. The sealing gasket 12 and the positioning sleeve 9 are interference-fitted. A limiting ring 13 is fixedly connected inside the second support sleeve 11. The fixing pad 4 has holes for the first support sleeve 8 to pass through at the position of each first support sleeve 8.

[0036] In use, the first support sleeve 8 and the second support sleeve 11 can be connected by bolts. The bolts are threaded to the positioning sleeve 9 on the upper side of each first support sleeve 8. Each bolt passes through the limiting ring 13 and is threaded to the support sleeve. The head of the bolt is engaged with the limiting ring 13. When the second support sleeve 11 and the positioning sleeve 9 are engaged, the sealing gasket 12 and the positioning sleeve 9 are pressurized to seal the space between the first support sleeve 8 and the positioning sleeve 9, so as to ensure the airtightness of the inside of the housing 1.

[0037] Furthermore, by Figures 1 to 6 As shown, in order to make the fit between the housing 1 and the cover plate 2 tighter, a sealing groove 14 is provided in the middle of the placement groove 5, and a sealing block 15 that matches the sealing groove 14 is fixedly connected to the outside of the placement plate 6.

[0038] In use, after the housing 1 and the cover plate 2 are fitted together, the sealing block 15 and the sealing groove 14 can make the connection between the housing 1 and the cover plate 2 tighter. It should be noted that the sealing ring 7 is connected to the side of the cover plate 2 close to the housing 1, that is, the front side of both the cover plate 2 and the sealing ring 7 are connected to the sealing ring 7.

[0039] Furthermore, by Figures 1 to 6 As shown, in order to reduce the probability of contamination of the wire harness during gluing, the fixing mechanism includes a U-shaped block 16 and multiple elastic plates 17 fixedly connected to the middle of the U-shaped block 16. Each elastic plate 17 has a fracture groove 18 on its lower side near the U-shaped block 16.

[0040] Furthermore, by Figures 1 to 6 As shown, in order to facilitate the operation of the staff, a sliding groove 19 is provided in the middle of the U-shaped block 16. A toggle block 20 is slidably connected inside the sliding groove 19. Two connecting ropes 21 are fixedly connected to the upper side of the toggle block 20. A through groove 22 is provided in the middle of each elastic plate 17. The two connecting ropes 21 pass through the corresponding through groove 22 and are connected to a pull block 23.

[0041] It should be noted that the multiple elastic plates 17 are arranged in a staggered herringbone shape. When the wire harness is used with the fixing mechanism, the housing 1 can be laid flat and the wire harness can be pulled inward from the opening of the U-shaped block 16. At this time, the middle of the wire harness passes through the gap between the multiple elastic plates 17. The gap between the elastic plates 17 and the U-shaped block 16 limits the interface at the end of the wire harness, preventing the wire harness and interface from falling into the interior of the housing 1 during the gluing process and causing contamination to the wire harness and interface.

[0042] After the gluing is completed, the pull block 23 can be operated directly. By pulling the pull block 23 upward, the pull block 23 drives the push block 20 to move along the sliding groove 19 through the connecting rope 21. During this process, the push block 20 will push the elastic plate 17 upward in sequence. The elastic plate 17 is subjected to force under the action of the fracture groove 18, causing each elastic plate 17 to break at the position of the fracture groove 18. During this process, the vibration generated when the elastic plate 17 breaks can vibrate the glue used for gluing inside the shell 1 to eliminate air bubbles inside. It can also bring out the wire harness and interface from the U-shaped block 16, which is convenient for subsequent installation with the cover plate 2.

[0043] Furthermore, by Figures 1 to 6 As shown, in order to facilitate the fixing of the whole device, a mounting plate 24 is fixedly connected to the front side of the housing 1, and a plurality of mounting holes 25 are provided on the mounting plate 24.

[0044] In use, the Hall sensor can be easily installed in a suitable position after assembly via the mounting plate 24 and mounting holes 25.

[0045] In the use of this utility model, during the installation of the Hall sensor, the fixing pad 4 is first placed inside the housing 1, and then the circuit board 3 is placed on the upper side of the fixing pad 4. The circuit board 3 can then be glued. Before gluing, the wire harness on the circuit board 3 used for connecting power and information transmission is first clipped into the fixing mechanism. Then, melted silicone is injected into the inside of the housing 1. The circuit board 3 inside the housing 1 is glued using silicone. After gluing, the fixing mechanism can be operated to vibrate the glued glue. At this time, the air inside the glue can be expelled, improving the sealing performance of the glue. After the glue is completed, the cover plate 2 can be fitted with the housing 1 to complete the installation of the Hall sensor. At this time, the housing 1 and the cover plate 2 are sealed by the sealing ring 7 to ensure the airtightness of the inside of the housing 1.

[0046] This utility model has a novel structure, ingenious design, and simple and convenient operation. Through this design, it effectively achieves the purpose of facilitating the fixing of connecting wire harnesses during gluing, making it easier for workers to assemble and operate the device, making the fit between the housing 1 and the cover plate 2 tighter, reducing the probability of contamination of the wire harness during gluing, and facilitating the overall fixing of the device.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A Hall sensor that is easy to glue, comprising a housing and a cover plate mounted on the rear side of the housing, characterized in that: The housing has a circuit board inside, and a fixing pad is provided between the circuit board and the inner wall of the housing. A placement groove is provided on the lower side of the housing, and a fixing mechanism for fixing the wire harness is provided on the upper side of the placement groove. A placement plate that matches the placement groove is provided on the side of the cover plate near the housing. A sealing ring that is fixedly connected to the cover plate is provided on the rear side of the housing.

2. The Hall sensor with convenient adhesive bonding according to claim 1, characterized in that: The housing has multiple first support sleeves inside, and a positioning sleeve is fixedly connected to the upper side of each first support sleeve. The circuit board has multiple positioning holes that are adapted to the outer diameter of the positioning sleeve. The first support sleeves and the positioning sleeves cooperate with each other to form a circuit board support structure.

3. A Hall sensor that is easy to glue-fit according to claim 2, characterized in that: The front side of the cover plate is fixedly connected to a second support sleeve that corresponds one-to-one with the first support sleeve. Each second support sleeve is fixedly connected to a sealing gasket on the side near the first support sleeve. Each positioning sleeve is chamfered on the side near the second support sleeve. The sealing gasket is interference-fitted with the positioning sleeve. A limit ring is fixedly connected inside the second support sleeve.

4. A Hall sensor that is easy to glue-fit according to claim 1, characterized in that: A sealing groove is provided in the middle of the placement groove, and a sealing block that matches the sealing groove is fixedly connected to the outer side of the placement plate.

5. A Hall sensor with convenient adhesive bonding according to claim 1, characterized in that: The fixing mechanism includes a U-shaped block and multiple elastic plates fixedly connected to the middle of the U-shaped block. Each elastic plate has a fracture groove on its lower side near the U-shaped block.

6. A Hall sensor with convenient adhesive bonding according to claim 5, characterized in that: The U-shaped block has a sliding groove in the middle, and a toggle block is slidably connected inside the sliding groove. Two connecting ropes are fixedly connected to the upper side of the toggle block. Each elastic plate has a through groove in the middle, and the two connecting ropes pass through the corresponding through grooves and are connected to a pulling block.

7. A Hall sensor with convenient adhesive bonding according to claim 1, characterized in that: A mounting plate is fixedly connected to the front side of the housing, and mounting holes are provided on the mounting plate.

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