Height sensor and internal structure thereof

Abstract

The utility model provides a height sensor and its internal structure, including casing, circuit board, sensor chip and a group of plug pins of casing injection moulding pre -buried on the casing, sensor chip sets up on the circuit board, and the first end of plug pin is crimped on the circuit board, realizes the electric connection of sensor chip and plug pin through the circuit of circuit board, the casing forms the lower cavity of opening downward, and circuit board is located in the lower cavity, and circuit board is fixed in the lower cavity of casing through the pouring sealant. Realize casing reuse, has reduced the manufacturing cost, has simplified the production technology, has shortened the manufacturing time, has avoided the waste of resources, has improved the ability of product response market change.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive electronics, and in particular to a height sensor and its internal structure. Background Technology

[0002] In the current market, height sensors are typically manufactured using a specific design: chip pins are soldered to a terminal frame, followed by injection molding of the housing. A major challenge of this traditional manufacturing method is the variation in chip sizes offered by different suppliers. This forces manufacturers to redesign and develop compatible terminal frames and sensor housing molds whenever a new chip needs to be accommodated. This process not only increases production costs but also extends time-to-market, reducing production flexibility and the speed of response to market demands.

[0003] Furthermore, as the automotive industry continues to demand higher levels of vehicle safety and reliability, it is placing even greater emphasis on the waterproofing performance of critical components such as altitude sensors. Traditionally, achieving the necessary protection levels often requires complex sealing measures, further increasing the complexity of design and manufacturing. Utility Model Content

[0004] Based on the above problems, this utility model provides a height sensor and its internal structure, aiming to solve the technical problems of high design cost and long design time of existing height sensors.

[0005] This utility model provides an internal structure for a height sensor, including: a housing, a circuit board, a sensor chip, and a set of pins pre-embedded in the housing by injection molding;

[0006] The sensor chip is mounted on the circuit board, and the first end of the connector pin is pressed onto the circuit board. The electrical connection between the sensor chip and the connector pin is achieved through the circuit board.

[0007] The housing forms a downward-opening lower cavity, in which the circuit board is located and fixed to the lower cavity of the housing with potting compound.

[0008] Furthermore, the sensor chip is surface-mounted onto the circuit board.

[0009] Furthermore, the sensor chip is a Hall sensor chip.

[0010] Furthermore, the connector pins are divided into a horizontal part and an inverted U-shaped part;

[0011] The horizontal end is the second end of the connector pin;

[0012] The end of the inverted U-shaped part is the first end of the connector pin.

[0013] Furthermore, the housing has a downward-opening clearance groove at the bottom of the lower cavity, and the first end of the connector extends downward from the bottom of the clearance groove and presses onto the circuit board.

[0014] Furthermore, the housing has at least one downwardly extending positioning post at the bottom of the lower cavity, and the circuit board has positioning holes that mate with the positioning post.

[0015] Furthermore, the circuit board is a PCBA.

[0016] Furthermore, the housing has a partition portion, and the housing also forms an upper cavity with an upward opening for connecting the swing arm;

[0017] The lower cavity and the upper cavity are separated by a partition in the shell;

[0018] The sensor chip and the upper cavity are aligned vertically.

[0019] Furthermore, the housing also has insertion slots;

[0020] The second end of the connector pin is inside the connector slot.

[0021] A height sensor that uses the aforementioned internal structure of a height sensor.

[0022] The beneficial technical effects of this utility model are as follows: This utility model uses a connector pin to connect to a circuit board, and uses the circuit board as an intermediary to achieve electrical connection with the chip. The circuit board is fixed to the housing with potting glue, making the circuit board easy to disassemble. The housing with pre-embedded connectors is compatible with chips from multiple manufacturers, realizing housing reuse, reducing manufacturing costs, simplifying the height sensor production process, shortening manufacturing time, avoiding resource waste, and improving the product's ability to respond to market changes. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the internal structure of a height sensor according to the present invention.

[0024] Figure 2 This is a partially enlarged schematic diagram of the internal structure of a height sensor of this utility model, showing the pins being pressed onto a circuit board.

[0025] in,

[0026] 1-Shell;

[0027] 2-Connector pins;

[0028] 3-Circuit board;

[0029] 4-Sensor chip;

[0030] 5-Inferior cavity;

[0031] 6-Avoidance groove;

[0032] 7-Positioning post;

[0033] 8-Upper cavity;

[0034] 9-Partition section;

[0035] 10-Socket;

[0036] 11-Potting compound. Detailed Implementation

[0037] 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.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0040] See Figure 1 This utility model provides an internal structure of a height sensor, including: a housing 1, a circuit board 3, a sensor chip 4, and a set of pins 2 pre-embedded in the housing by injection molding.

[0041] The sensor chip 4 is mounted on the circuit board 3, and the first end of the connector 2 is pressed onto the circuit board 3. The electrical connection between the sensor chip 4 and the connector 2 is achieved through the circuit of the circuit board 3.

[0042] The housing 1 forms a lower cavity 5 with a downward opening. The circuit board 3 is located in the lower cavity 5 and is fixed in the lower cavity of the housing 1 by potting compound 11.

[0043] The downward direction of this utility model can be understood as... Figure 1 The direction downwards.

[0044] Furthermore, circuit board 3 is a PCBA (Printed Circuit Board Assembly).

[0045] The circuit board 3 is crimped to the pre-embedded pins 2 of the housing 1, and then vacuum potting is performed around the circuit board 3. After the potting compound cures, the circuit board 3 is fixed on the housing 1, and the circuit board 3 is completely isolated from the outside world.

[0046] This invention allows for the installation of sensor chips from different manufacturers by simply replacing the circuit board, while keeping the same sensor housing. This method greatly improves production flexibility; if a chip supplier experiences a shortage or supply disruption, it can be quickly switched to another supplier, ensuring production continuity and stability. Furthermore, this invention uses potting compound to seal the circuit board and chip, ensuring excellent waterproof performance of the altitude sensor and meeting the high safety and reliability requirements of the automotive industry. This invention not only simplifies the production process, shortens manufacturing time, reduces production costs, and avoids resource waste, but also improves the product's ability to respond to market changes.

[0047] Furthermore, the sensor chip 4 is surface-mounted onto the circuit board 3.

[0048] The surface mount method makes it easy to replace sensor chip 4.

[0049] Furthermore, sensor chip 4 is a Hall sensor chip.

[0050] Furthermore, the connector 2 is divided into a horizontal part and an inverted U-shaped part;

[0051] The horizontal end is the second end of the connector 2;

[0052] The end of the inverted U-shaped part is the first end of the connector 2.

[0053] The horizontal part is lower than the upper surface of the circuit board 3 in the height direction.

[0054] Further, see Figure 2 The first end of the connector 2 is a fisheye block with a waist-shaped hole. The design of the waist-shaped hole makes the fisheye block elastic. The fisheye block is directly pressed into the socket on the circuit board and is connected and fixed to the socket on the circuit board by the elasticity of the fisheye block itself.

[0055] The connector pin 2 is designed as an inverted U-shape, with most of the inverted U-shape embedded in the injection-molded housing. This allows the first end of the connector pin 2 to extend downwards from the vertical direction and press against the horizontally placed circuit board, thus improving the stability of the pressing.

[0056] Furthermore, the housing 1 has a downward-opening relief groove 6 at the bottom of the lower cavity 5, and the first end of the plug pin 2 extends downward from the bottom of the relief groove 6 and is pressed onto the circuit board 3.

[0057] The design of the clearance groove 6 allows the connector pin 2 to have a certain amount of room to move at the first end that is pressed against the circuit board 3, thereby improving the compatibility of the press-fit with the circuit board 3.

[0058] Furthermore, the housing 1 has at least one downwardly extending positioning post 7 at the bottom of the lower cavity 5, and the circuit board 3 has positioning holes that cooperate with the positioning post 7.

[0059] The positioning post 7 is mainly used to fix the circuit board 3 and the housing 1 relatively, so as to prevent the circuit board from shifting and causing the sensor chip to shift during subsequent potting.

[0060] Furthermore, the housing 1 has a partition portion 9, and the housing 1 also has an upwardly opening upper cavity 8 for connecting the swing arm;

[0061] The lower cavity 5 and the upper cavity 8 are separated by a partition 9 in the shell;

[0062] Sensor chip 4 and upper cavity 8 are vertically aligned.

[0063] The height sensor includes a lever. As per existing technology, the fixed end of the lever has a rotating shaft, which is rotatably fitted into an upper cavity. The free end of the lever is connected to the vehicle body. A magnet is located at the bottom of the rotating shaft, and a Hall sensor chip is positioned on a circuit board, facing the magnet. The lever moves with changes in vehicle height, causing the rotating shaft to rotate. This rotation causes the magnet to rotate, changing the magnetic field passing through the Hall sensor chip, thereby detecting the vehicle height.

[0064] The shape of the upper cavity and the structure of the swing arm are not within the scope of this utility model. Existing swing arms can be used, and no specific limitations are made here.

[0065] Furthermore, the housing 1 also has a insertion groove 10;

[0066] The second end of the connector pin 2 is inside the connector slot 10.

[0067] The second end is inside the insertion slot 10. The wall around the insertion slot 10 can serve as a protective cover for the second end. The second end of the insertion pin 2 is used to connect with external electronic devices to realize signal transmission between external electronic devices and Hall sensor chips.

[0068] This utility model also provides a height sensor, which uses the aforementioned internal structure of a height sensor.

[0069] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An internal structure for a height sensor, characterized in that, include: The housing, circuit board, sensor chip, and a set of pins pre-embedded in the housing by injection molding; The sensor chip is mounted on the circuit board, and the first end of the connector pin is pressed onto the circuit board. The electrical connection between the sensor chip and the connector pin is achieved through the circuit of the circuit board. The housing forms a downward-opening lower cavity, and the circuit board is located in the lower cavity and is fixed in the lower cavity of the housing by potting compound.

2. The internal structure of a height sensor as described in claim 1, characterized in that, The sensor chip is surface-mounted onto the circuit board.

3. The internal structure of a height sensor as described in claim 1, characterized in that, The sensor chip is a Hall sensor chip.

4. The internal structure of a height sensor as described in claim 1, characterized in that, The connector is divided into a horizontal part and an inverted U-shaped part; The end of the horizontal portion is the second end of the insertion pin; The end of the inverted U-shaped portion is the first end of the connector pin.

5. The internal structure of a height sensor as described in claim 4, characterized in that, The housing has a downward-opening clearance groove at the bottom of the lower cavity, and the first end of the connector extends downward from the bottom of the clearance groove and presses against the circuit board.

6. The internal structure of a height sensor as described in claim 1, characterized in that, The housing has at least one downwardly extending positioning post at the bottom of the lower cavity, and the circuit board has positioning holes that cooperate with the positioning post.

7. The internal structure of a height sensor as described in claim 1, characterized in that, The circuit board is a PCBA.

8. The internal structure of a height sensor as described in claim 1, characterized in that, The housing has a partition portion, and the housing also forms an upper cavity with an upward opening for connecting the swing arm; The lower cavity and the upper cavity are separated by the partition portion of the housing; The sensor chip and the upper cavity are vertically aligned.

9. The internal structure of a height sensor as described in claim 4, characterized in that, The housing also has a insertion slot; The second end of the connector pin is located within the connector slot.

10. A height sensor, characterized in that, The internal structure of the height sensor is as described in any one of claims 1-9.

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