CN-224233661-U - Voltage withstand structure suitable for automobile filter

Abstract

The utility model discloses a voltage-resistant structure suitable for an automobile filter, which comprises a shell, wherein a fixed column body for circuit connection is arranged on the shell, a hollow hole site is arranged in the fixed column body, a plastic cap is arranged in the hollow hole site and covers the hollow hole site, a sampling joint is arranged on the bottom surface of the shell corresponding to the region of the fixed column body, the plastic cap comprises a cap base and a cap bulge, the cap bulge is arranged on the cap base, a blocking surface is formed on the cap base in the region around the cap bulge, a limiting wall is arranged around the hollow hole, the cap base is arranged in the hollow hole site, the blocking surface is attached to the limiting wall, and the cap bulge passes through the hollow hole site. According to the utility model, through the assembly of the plastic cap, the voltage resistance is improved, and the plastic cap is not easy to damage.

Inventors

• LI JIE
• GUAN XINHAI

Assignees

• 东翔电子（东莞）有限公司

Dates

Publication Date

20260512

Application Date

20250708

Claims (10)

1. 1. The utility model provides a withstand voltage structure suitable for on automotive filter, includes the casing, its characterized in that is equipped with the fixed cylinder that is used for the line connection on the casing, be equipped with the cavity hole site in the fixed cylinder, install the plastic cap in the cavity hole site, the plastic cap covers the cavity hole site, and the casing bottom surface corresponds fixed cylinder region and is equipped with the sampling joint.
2. 2. The voltage withstand structure for automotive filters according to claim 1, wherein the plastic cap comprises a cap base and a cap protrusion, the cap protrusion is disposed on the cap base, a surrounding area of the cap protrusion on the cap base is formed as a blocking surface, the hollow hole is provided with a limiting wall around, the cap base is fitted into the hollow hole, and the blocking surface is fitted with the limiting wall, and the cap protrusion passes through the hollow hole.
3. 3. The voltage resistant structure of claim 2 wherein the cap protrusion of the plastic cap is flush with the top end surface of the fixed post.
4. 4. The voltage withstanding structure for automobile filters according to claim 2, wherein the cap base and the inner side wall of the fixing column are screw-assembled structures.
5. 5. The voltage withstanding structure for automobile filters according to claim 2, wherein a tool clamping position is arranged in the cap base of the plastic cap, and is in clamping connection with a locking tool through the tool clamping position.
6. 6. The voltage resistant structure of claim 5, wherein the plastic cap has a cavity in the cap base, and the tool clamp is disposed in the cavity.
7. 7. The voltage resistant structure of claim 2, wherein the cap base of the plastic cap is adhered and fixed to the fixing column by glue.
8. 8. The voltage resistant structure of claim 7 wherein the cap base side wall of the plastic cap is provided with a feed recess.
9. 9. The voltage tolerant architecture for automotive filters of claim 1 wherein said mounting posts are integrally formed with the housing.
10. 10. The voltage tolerant architecture for automotive filters of claim 1 wherein a stiffener is provided between the mounting post and the housing.

Description

Voltage withstand structure suitable for automobile filter Technical Field The utility model relates to an automobile filter, in particular to a voltage-resistant structure suitable for an automobile filter. Background The filter is the most basic microwave electronic device and is a filter circuit composed of capacitance, inductance and resistance. The filter forms mainly comprise a planar microstrip form and a cavity filter. The filter can effectively filter the frequency points of the specific frequency or the frequencies outside the frequency points in the power line to obtain a power signal of the specific frequency or eliminate the power signal of the specific frequency. In recent years, with the increasing functions of automobiles and the increasing demands for system reliability, dc power supply filters are increasingly used in electronic devices of automobiles. The filter needs to be contacted with voltage and current, and the automobile direct current power filter needs to bear high voltage and current at the sampling point of the line connection. The sampling point structure of the traditional filter lacks effective protection, is easily influenced by environmental factors after long-term exposure under complex working conditions, and leads to the reduction of insulation performance. When the vehicle is operated in a wet or dusty environment, the bare electrical connection may cause electrical leakage or short circuits, causing distortion of the sampled signal and even equipment failure. Failure to have adequate voltage withstand performance can easily cause damage, resulting in inaccurate and effective sampling. Disclosure of utility model In order to solve the technical problems, the utility model provides a voltage withstand structure suitable for an automobile filter. In order to solve the technical problems, the utility model adopts the following technical scheme: The utility model provides a withstand voltage structure suitable for on car filter, includes the casing, be equipped with the fixed cylinder that is used for the line connection on the casing, be equipped with the cavity hole site in the fixed cylinder, install the plastic cap in the cavity hole site, the plastic cap covers the cavity hole site, and the casing bottom surface corresponds fixed cylinder region and is equipped with the sampling joint. As a further improvement, the plastic cap comprises a cap base and a cap bulge, wherein the cap bulge is arranged on the cap base, a blocking surface is formed on the cap base in the surrounding area of the cap bulge, a limiting wall is arranged on the periphery of the hollow hole, the cap base is arranged in the hollow hole, the blocking surface is attached to the limiting wall, and the cap bulge passes through the hollow hole. As a further improvement, the cap bulge of the plastic cap is flush with the top end surface of the fixed column body. As a further improvement, the cap base and the inner side wall of the fixed column body are of a thread assembly structure. As a further improvement, a tool clamping position is arranged in the cap base of the plastic cap and is in clamping connection with a locking tool through the tool clamping position. As a further improvement, the cap base of the plastic cap is internally provided with a cavity, and the tool clamping position is arranged in the cavity. As a further improvement, the cap base of the plastic cap is adhered and fixed with the fixing column body through glue. As a further improvement, the side wall of the cap base of the plastic cap is provided with a feeding concave position. Compared with the prior art, the utility model has the following beneficial technical effects: Through the sealed protection of plastic cap to the hole site and the accurate location of sampling joint, effectively promote the withstand voltage performance of circuit junction, prevent to damage and the sampling inefficacy because of the not enough device that leads to of withstand voltage, have effectively promote the withstand voltage performance of circuit junction, prevent to damage and the sampling inefficacy because of the not enough device that leads to of withstand voltage to ensure the steady operation of automotive electronics system. Drawings FIG. 1 is a schematic perspective view of the present utility model; FIG. 2 is a schematic diagram of an exploded construction of the present utility model; FIG. 3 is a schematic perspective view of a plastic cap according to the present utility model; FIG. 4 is a schematic cross-sectional view of a plastic cap according to the present utility model; FIG. 5 is a schematic view of another view of the plastic cap according to the present utility model. Reference numerals: The device comprises a shell 1, a fixed column 2, a hollow hole site 3, a plastic cap 4, a cap base 41, a cap bulge 42, a blocking surface 43, a feeding concave position 44, a tool clamping position 45, a cavity 46, a limiting wall 5 and a rei