Waterproof temperature sensor outside vehicle

Abstract

The utility model discloses a waterproof temperature sensor outside a vehicle, which comprises a sensor shell and a pressing needle assembly arranged in the sensor shell through ultrasonic welding, the pressing needle assembly is connected with a thermosensitive element, and the end part of the thermosensitive element is coated with a heat conduction layer. The beneficial effects of the utility model are that the whole structure is simple, the waterproofness is enhanced by using an ultrasonic welding mode, the housing structure can further realize stable connection with the panel, and the practicality is strong.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessories, and particularly relates to a waterproof vehicle exterior temperature sensor. Background Art

[0002] The primary function of an outdoor temperature sensor is to provide the vehicle's ECU with a temperature signal indicating the outside temperature of the cabin. By comparing this signal with the interior temperature, the ECU can determine the interior temperature and meet the needs of the occupants. For example, when the outside temperature is low but the interior temperature is high, the ECU will adjust the air conditioning to maintain the interior temperature within a suitable range, preventing discomfort caused by overheating or overcooling. Outdoor temperature sensors are typically mounted on the front bumper grille. Because these sensors are exposed to the elements, when the vehicle is exposed to heavy rain or deep water, the waterproof performance of these sensors is a higher requirement. This ensures that the temperature signal is accurately transmitted to the ECU, allowing for a quick response and accurate detection of the outside temperature. Utility Model Content

[0003] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a waterproof vehicle exterior temperature sensor.

[0004] The purpose of this utility model will be achieved through the following technical solutions:

[0005] A waterproof vehicle exterior temperature sensor comprises a sensor housing and a pressure needle assembly placed in the sensor housing by ultrasonic welding. The pressure needle assembly is connected to a thermal element, and the end of the thermal element is coated with a heat conductive layer.

[0006] Preferably, the sensing front end structure of the sensor housing includes a bullet-shaped body and plug-in wings spaced apart around the bullet-shaped body, and plug-in bosses are protruding from the plug-in wings.

[0007] Preferably, an elastic movable gap is provided between the plug-in wing and the bullet-shaped body.

[0008] Preferably, guiding and positioning edges are provided between adjacent plug-in wings.

[0009] Preferably, the guide and positioning ridges are axially extended and arranged on the surface of the bullet-shaped body.

[0010] Preferably, the thermistor is connected to the pressure needle assembly by welding, and the heat-conducting end of the thermistor extends to be placed at the sensing front end of the sensor housing.

[0011] Preferably, the thermistor is a negative temperature coefficient thermistor.

[0012] The beneficial effects of the present invention are as follows: the overall structure of the present invention is simple, the waterproofness is enhanced by ultrasonic welding, and the outer shell structure can further achieve a stable connection with the panel, and the utility model is highly practical.

[0013] The specific implementation methods of the present invention will be further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure when connecting the panel and harness-end connector.

[0017] Figure 3 yes Figure 2 Schematic diagram of the exploded structure with the panels hidden. DETAILED DESCRIPTION

[0018] The present invention proposes a waterproof vehicle exterior temperature sensor. Figure 1-Figure 3 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] A waterproof exterior temperature sensor comprises a sensor housing 1, a pressure needle assembly 2 ultrasonically welded into the sensor housing 1, and a thermistor 3 connected to the pressure needle assembly 2. The end of the thermistor 3 is coated with a thermally conductive layer, typically formed using thermal paste. The thermally conductive end of the thermistor 3 extends to the sensing end of the sensor housing.

[0020] In this embodiment, the pressure pin assembly 2 includes an injection-molded bottom cover 21 and a PIN 22 mounted on the bottom cover 21. The thermistor 3 is connected to the pressure pin assembly 2 by welding. To ensure the internal seal of the sensor, ultrasonic welding is used to connect the pressure pin assembly 2 to the housing. The sensor of this utility model has a waterproof rating of up to IPX9K. Furthermore, the use of a negative temperature coefficient thermistor for temperature acquisition enables the sensor to achieve a temperature monitoring accuracy of less than + / -0.5°C.

[0021] The sensor housing 1's sensing front end structure includes a bullet-shaped body 11 and insertion wings 12 spaced around the body 11. An elastic gap 121 is defined between the insertion wings 12 and the body 11. This gap 121 allows for easy insertion into the panel 3. The insertion wings 12 are provided with insertion bosses, which form a snap-fit ​​design. These bosses ensure a secure connection with the panel.

[0022] Specifically, the plug-in bosses include a first plug-in boss 121 and a second plug-in boss 122 spaced below the first plug-in boss 121. The first plug-in boss 122 protrudes wider from the plug-in wing than the first plug-in boss 121. When connected to the panel 3, the panel 3 fits into the gap between the first and second plug-in bosses 121, 122, forming a stable connection with the sensor.

[0023] A guide rib 13 is provided between adjacent connecting wings 12. This rib 13 extends axially along the surface of the bullet-shaped body 11. This rib 13 cooperates with the guide holes in the panel to prevent misalignment and prevents the sensor from rotating circumferentially after connection to the panel 3, thus providing a positioning function.

[0024] The sensor of this utility model is assembled into a vehicle by directly inserting it into the panel hole, then attaching the wiring harness connector 4. Once powered on, it can be connected to the vehicle ECU. This makes installation quick and easy, as well as waterproof and practical. The wiring harness connector 4 of this embodiment has latching wings 41 on its sides. These latching wings 41 have latching holes 41 at their upper ends that engage with the protrusions 14 on both sides of the housing.

[0025] Finally, it should be noted that terms such as "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate positions or locations based on the positions shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific manner. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. Waterproof exterior temperature sensor, characterized by: The invention comprises a sensor housing and a pressure needle assembly placed in the sensor housing by ultrasonic welding. The pressure needle assembly is connected to a thermosensitive element, and the end of the thermosensitive element is coated with a heat-conducting layer.

2. The waterproof exterior temperature sensor according to claim 1, wherein: The sensing front end structure of the sensor housing includes a bullet-shaped main body and plug-in side wings spaced apart around the bullet-shaped main body, and plug-in bosses are protruding from the plug-in side wings.

3. The waterproof exterior temperature sensor according to claim 2, wherein: An elastic movable gap is provided between the plug-in wing and the bullet-shaped main body.

4. The waterproof exterior temperature sensor according to claim 3, wherein: Guiding and positioning edges are provided between adjacent plug-in wings.

5. The waterproof exterior temperature sensor according to claim 4, wherein: The guide and positioning ribs are axially extended and arranged on the surface of the bullet-shaped main body.

6. The waterproof exterior temperature sensor according to claim 1, wherein: The thermal element is connected to the pressure needle assembly by welding, and the heat-conducting end of the thermal element extends and is placed on the sensing front end of the sensor housing.

7. The waterproof exterior temperature sensor according to claim 1, wherein: The thermistor is a negative temperature coefficient thermistor.

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