High-protection magnetic sensor

Abstract

The utility model discloses a high-protection magnetic sensor, which comprises a protective shell, a cable, a PCBA (Printed Circuit Board Assembly) connected with the cable, a Hall sensor arranged on the PCBA, a hot melt adhesive and epoxy resin, the protective shell is provided with a loading port and a glue injection port, the PCBA and the Hall sensor are loaded into the protective shell through the loading port, and the hot melt glue is injected into the protective shell through the glue injection port and fills an inner cavity of the protective shell; and the filling port and the glue injection port are sealed by the epoxy resin. According to the utility model, the PCBA and the Hall sensor are installed in the protective shell through the installation port, and then the hot melt adhesive is injected into the protective shell through the adhesive injection port and fills the inner cavity of the protective shell, so that the Hall sensor can be fixed in the protective shell by the hot melt adhesive, and the Hall sensor is protected; and the protective shell can bear the impact of external force, so that the Hall sensor can be better protected.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic sensors, in particular to a high-protection magnetic sensor. Background Art

[0002] The Hall sensor is a sensor that detects magnetic fields. In practical applications, a single Hall sensor cannot adapt to different environments and scenarios. Therefore, it is necessary to package the Hall sensor into a device so that it can cope with different application scenarios and environments. The existing packaging method is to directly use packaging glue for packaging. Although it can effectively prevent water, it cannot achieve anti-collision and anti-pressure. Under collision or pressure, the packaged device is easily damaged.

[0003] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a high-protection magnetic sensor, strengthen the protection of the Hall sensor, and reduce the damage caused by external force impact.

[0005] The technical solution of the utility model is as follows: a high-protection magnetic sensor is provided, comprising: a protective shell, a cable, a PCBA connected to the cable, a Hall sensor installed on the PCBA, hot melt adhesive, and epoxy resin; the protective shell is provided with an inlet and an injection port, the PCBA and the Hall sensor are installed in the protective shell through the inlet, the hot melt adhesive is injected into the protective shell through the injection port and fills the inner cavity of the protective shell; the epoxy resin seals the inlet and the injection port.

[0006] By installing the PCBA and the Hall sensor into the protective shell through the loading port, and then injecting hot melt adhesive into the protective shell through the glue injection port and filling the inner cavity of the protective shell, the Hall sensor can be fixed in the protective shell by the hot melt adhesive to protect the Hall sensor; and the protective shell can withstand the impact of external forces, so as to better protect the Hall sensor. Furthermore, the glue injection port and the loading port are sealed with epoxy resin to better prevent water vapor from entering and better protect the Hall sensor.

[0007] Furthermore, the Hall sensor faces the glue injection port to reduce the influence of the housing on the sensitivity of the Hall sensor.

[0008] Furthermore, the glue injection port is arranged at one end of the protective shell away from the loading port. The hot melt glue is injected from the glue injection port and then flows to the loading port, which can better reduce the residual air in the protective shell.

[0009] Furthermore, the protective shell is provided with mounting screw holes, which facilitate the installation of the product.

[0010] Furthermore, the mounting screw hole is arranged at an end of the protective shell away from the loading port.

[0011] Furthermore, the inner cavity of the protective shell is non-cylindrical or cylindrical. The non-circular cylindrical inner cavity can increase the contact area between the hot melt adhesive and the inner cavity, and enhance the bonding force between the hot melt adhesive and the inner cavity.

[0012] Furthermore, the protective shell is made of metal material.

[0013] By adopting the above scheme, the utility model provides a highly protected magnetic sensor, which is installed into the protective shell through the loading port by the PCBA and the Hall sensor, and then the hot melt adhesive is injected into the protective shell through the glue injection port and fills the inner cavity of the protective shell, so that the Hall sensor can be fixed in the protective shell by the hot melt adhesive, thereby protecting the Hall sensor; and the protective shell can withstand the impact of external forces, thereby better protecting the Hall sensor. Furthermore, the glue injection port and the loading port are sealed with epoxy resin, which can better prevent water vapor from entering and better protect the Hall sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0015] Figure 2 for Figure 1 An exploded view of an embodiment;

[0016] Figure 3 A schematic diagram of the structure of the protective shell. DETAILED DESCRIPTION

[0017] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] See also Figure 1-Figure 3 The present embodiment provides a high-protection magnetic sensor, including: a protective shell 10, a cable 11, a PCBA 12 connected to the cable 11, a Hall sensor 13 installed on the PCBA 12, a hot melt adhesive 14, and an epoxy resin 15; the protective shell 10 is provided with an inlet 16 and an adhesive injection port 17, the PCBA 12 and the Hall sensor 13 are installed in the protective shell 10 through the inlet 16, the hot melt adhesive 14 is injected into the protective shell 10 through the adhesive injection port 17 and fills the inner cavity of the protective shell 10; the epoxy resin seals the inlet 16 and the adhesive injection port 17.

[0019] By installing the PCBA 12 and the Hall sensor 13 into the protective shell 10 through the loading port 16, and then injecting the hot melt adhesive 14 into the protective shell 10 through the adhesive injection port 17 and filling the inner cavity of the protective shell 10, the Hall sensor 13 can be fixed in the protective shell 10 by the hot melt adhesive 14, thereby protecting the Hall sensor 13; and the protective shell 10 can withstand the impact of external forces, thereby better protecting the Hall sensor 13. Furthermore, the adhesive injection port 17 and the loading port 16 are sealed with epoxy resin, which can better prevent water vapor from entering and better protect the Hall sensor 13.

[0020] In this embodiment, the Hall sensor 13 faces the glue injection port 17 to reduce the influence of the housing on the sensitivity of the Hall sensor 13.

[0021] In this embodiment, the glue injection port 17 is disposed at an end of the protective shell 10 away from the loading port 16. The hot melt adhesive 14 is injected from the glue injection port 17 and then flows to the loading port 16, which can better reduce the residual air in the protective shell 10.

[0022] In this embodiment, the protective shell 10 is provided with mounting screw holes 18. The mounting screw holes 18 facilitate the installation of the product.

[0023] In this embodiment, the mounting screw hole 18 is disposed at an end of the protective shell 10 away from the loading port 16 .

[0024] In this embodiment, the inner cavity of the protective shell 10 is non-cylindrical. The non-circular cylindrical inner cavity can increase the contact area between the hot melt adhesive 14 and the inner cavity, and enhance the bonding force between the hot melt adhesive 14 and the inner cavity.

[0025] In this embodiment, the protective shell 10 is made of metal material.

[0026] In summary, the utility model provides a highly protected magnetic sensor, which is installed into the protective shell through the loading port by the PCBA and the Hall sensor, and then the hot melt adhesive is injected into the protective shell through the glue injection port and fills the inner cavity of the protective shell, so that the Hall sensor can be fixed in the protective shell by the hot melt adhesive, thereby protecting the Hall sensor; and the protective shell can withstand the impact of external forces, thereby better protecting the Hall sensor. Furthermore, the glue injection port and the loading port are sealed with epoxy resin, which can better prevent water vapor from entering and better protect the Hall sensor.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-protection magnetic sensor, characterized in that: include: A protective shell, a cable, a PCBA connected to the cable, a Hall sensor mounted on the PCBA, hot melt adhesive, and epoxy resin; The protective shell is provided with an inlet and a glue injection port, the PCBA and the Hall sensor are installed into the protective shell through the inlet, and the hot melt glue is injected into the protective shell through the glue injection port to fill the inner cavity of the protective shell; The epoxy resin seals the loading port and the glue injection port.

2. A high-protection magnetic sensor according to claim 1, characterized in that: The Hall sensor faces the glue injection port.

3. A high-protection magnetic sensor according to claim 1, characterized in that: The glue injection port is arranged at an end of the protective shell away from the loading port.

4. A high-protection magnetic sensor according to claim 1, characterized in that: The protective shell is provided with mounting screw holes.

5. A high-protection magnetic sensor according to claim 4, characterized in that: The mounting screw hole is arranged at an end of the protective shell away from the loading port.

6. A high-protection magnetic sensor according to claim 1, characterized in that: The inner cavity of the protective shell is non-cylindrical or cylindrical.

7. A high-protection magnetic sensor according to claim 1, characterized in that: The protective shell is made of metal material.

Images