An ultrathin ultrasonic externally attached oil level sensor

Abstract

The utility model discloses an ultrathin ultrasonic wave outer pasting type oil level sensor, including strong double -sided adhesive tape, silica gel seal ring, holder and ultrasonic sensor, is equipped with the boss circular table on ultrasonic sensor, is equipped with the round hole on silica gel seal ring, the boss circular table is connected with the round hole cover, and one end of strong double -sided adhesive tape is mutually bonded with holder, and holder is equipped with the clamping hole no.

Description

Technical Field

[0001] This utility model relates to the field of liquid level detection sensor technology, specifically an ultra-thin ultrasonic external oil level sensor. Background Technology

[0002] Existing ultrasonic external fuel level sensors are inherently thick (generally >12mm), and with the addition of mounting brackets or hose clamps, the total installation thickness exceeds 20mm. While these sensors work fine on high-chassis vehicles like large trucks or vehicles without underbody protection, they are problematic on cars with underbody protection or low chassis, as well as on construction vehicles that frequently travel on irregular roads, where the fuel tank is close to the ground. The excessively thick sensors cannot be installed on vehicles with underbody protection, and even if they can be installed on vehicles without underbody protection, there is a risk of them being scraped and falling off. Furthermore, existing sensors use hose clamps and adhesive bonding, making them unusable on irregularly shaped PP or PVC plastic fuel tanks.

[0003] Most existing ultrasonic sensors use fluid media such as grease or silicone grease to install the sensors. After a period of time, the grease or silicone grease will be lost, causing sensor data loss. This requires re-maintenance and reinstallation, which is costly. Utility Model Content

[0004] The purpose of this invention is to provide an ultra-thin ultrasonic external oil level sensor, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an ultra-thin ultrasonic external oil level sensor, comprising a strong double-sided adhesive, a silicone sealing ring, a retainer, and an ultrasonic sensor. The ultrasonic sensor has a raised truncated cone, and the silicone sealing ring has a circular hole adapted to the raised truncated cone. The raised truncated cone is fitted into the circular hole, and the silicone sealing ring and the ultrasonic sensor are adhered and bonded to each other. One end of the strong double-sided adhesive is bonded to the retainer. The retainer has a first locking hole adapted to the ultrasonic sensor. The ultrasonic sensor is fitted into the first locking hole, and an adhesive layer is provided between the outer circumferential end face of the ultrasonic sensor and the inner circumferential end face of the first locking hole. The strong double-sided adhesive has a second locking hole adapted to the silicone sealing ring, and the circumferential end face of the silicone sealing ring abuts against the inner circumferential end face of the second locking hole.

[0006] Preferably, the silicone sealing ring has a single-sided adhesive backing on the side near the ultrasonic sensor, and the silicone sealing ring is bonded to the ultrasonic sensor by the single-sided adhesive backing.

[0007] Preferably, the surface of the raised frustum is coated with a silicone coating.

[0008] Preferably, the adhesive layer is AB modified acrylic adhesive.

[0009] Preferably, a second silicone layer is coated on the surface of the adhesive layer, and a third silicone layer is coated on the outer circumferential end face of the retainer.

[0010] Preferably, the ultrasonic sensor is connected to a power cord, and the retainer and the strong double-sided adhesive are provided with slots, allowing the power cord to extend outward along the slots.

[0011] Preferably, the end face of the strong double-sided adhesive opposite to the retainer is used to bond the oil tank.

[0012] Preferably, the retainer is an aluminum alloy retainer, and the thickness of the retainer is 2.5mm to 3.5mm.

[0013] Preferably, the thickness of the ultrasonic sensor is 2.5 mm to 3.5 mm.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. The structure and assembly of the retainer, ultrasonic sensor, strong double-sided adhesive and silicone sealing ring of this utility model make the overall size smaller and thinner, which can better install the fuel tank of ultra-low chassis cars and fuel tanks with chassis armor. The flat structure of the retainer can better cooperate with the special strong chemical double-sided adhesive for plastics, and can better cope with the installation of sensors in plastic or resin fuel tanks.

[0016] 2. This utility model uses a single-sided adhesive on the silicone sealing ring and the ultrasonic sensor's transmitting and sensing surface is bonded with a single-sided adhesive, making sensor installation more convenient and solving the problem of slippage of the sealing gasket during sensor installation, which causes unstable data later.

[0017] 3. This utility model achieves preliminary assembly through strong double-sided adhesive, an adhesive layer between the retainer and the ultrasonic sensor, and a silicone sealing ring. By applying silicone layer one, silicone layer two, and silicone layer three, the sealed and cured silicone achieves signal penetration and coupling, enabling one-time installation and lifetime use. This solves the problem of conventional sensors using grease or silicone grease for installation, which requires frequent replacement and replenishment of grease or silicone grease later. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an exploded view of the structure of this utility model. Figure 1 ;

[0020] Figure 3 This is an exploded view of the structure of this utility model. Figure 2. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "horizontal," "vertical," "top," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Please see Figures 1 to 3 The present invention provides an embodiment of an ultra-thin ultrasonic external oil level sensor, comprising a strong double-sided adhesive 1, a retainer 2, an ultrasonic sensor 3, and a silicone sealing ring 4, which are fitted together. The ultrasonic sensor 3 is provided with a raised truncated cone 5, the silicone sealing ring 4 is provided with a round hole 6 that matches the raised truncated cone 5, the retainer 2 is provided with a first locking hole 7 that matches the ultrasonic sensor 3, and the strong double-sided adhesive 1 is provided with a second locking hole 8 that matches the silicone sealing ring 4.

[0024] During assembly, first, adhere one end face of the strong double-sided adhesive 1 to the retainer 2, aligning the slots 9 of the strong double-sided adhesive 1 and the retainer 2. Then, adhere the other end face of the strong double-sided adhesive 1 to the oil tank to fix the retainer 2. Next, adhere the single-sided adhesive on the silicone sealing ring 4 to the ultrasonic sensor 3, and fit the raised truncated cone 5 into the round hole 6. Apply curable sealing silicone to the ultrasonic sensor 3, which will cure to form silicone coating one. Then, place the ultrasonic sensor 3 into the locking hole 7 of the retainer 2 and press it firmly. Next, mix AB modified acrylic glue and apply it evenly to the gap between the ultrasonic sensor 3 and the retainer 3. The AB modified acrylic glue will solidify and bond to form an adhesive layer. Apply sealing silicone to the adhesive layer, which will solidify to form silicone coating two. Silicone coating two extends to the ultrasonic sensor 3 and the retainer 2. Finally, apply sealing silicone to the retainer 3, which will solidify to form silicone coating three, completing the installation of the oil level sensor.

[0025] The retainer 2 is an aluminum alloy frame with a thickness of 2.5mm to 3.5mm; the ultrasonic sensor 3 has a thickness of 2.5mm to 3.5mm. In this embodiment, the retainer 2 has a thickness of 3mm, and the ultrasonic sensor 2 has a thickness of 3mm. The sleeve assembly method results in a smaller and lighter overall size, allowing for better installation on low-chassis car fuel tanks and fuel tanks with chassis armor. The flat structure of the retainer better accommodates strong double-sided adhesive for plastics, enabling better sensor installation on plastic or resin fuel tanks.

[0026] The silicone sealing ring 4 is equipped with single-sided adhesive, and the ultrasonic sensor 3 uses a single-sided adhesive bonding method for its transmitting sensing surface, making sensor installation more convenient and solving the problem of slippage of the sealing gasket during sensor installation, which causes unstable data in the later stage.

[0027] Both the strong double-sided adhesive 1 and the retainer 2 are flat circular structures, which makes the overall structure lighter, thinner, and smaller in size.

[0028] Furthermore, the ultrasonic sensor 2 is connected to a power cord, and both the strong double-sided adhesive 1 and the retainer 2 are provided with slots 9, allowing the power cord to extend outward along the slots 9.

[0029] Furthermore, the sensor utilizes a sealable and curable silicone sealant to replace conventional grease or silicone grease during installation, enabling the sensor to be installed once and used for a lifetime, thus avoiding the need for frequent replacement of grease or silicone grease.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An ultra-thin ultrasonic external oil level sensor, comprising strong double-sided adhesive, a silicone sealing ring, a retainer, and an ultrasonic sensor, characterized in that: The ultrasonic sensor has a raised truncated cone. The silicone sealing ring has a circular hole that matches the raised truncated cone. The raised truncated cone is fitted into the circular hole, and the silicone sealing ring and the ultrasonic sensor are attached and bonded to each other. One end of the strong double-sided adhesive is bonded to the retainer. The retainer has a first locking hole that matches the ultrasonic sensor. The ultrasonic sensor is fitted into the first locking hole, and an adhesive layer is provided between the outer circumferential end face of the ultrasonic sensor and the inner circumferential end face of the first locking hole. The strong double-sided adhesive has a second locking hole that matches the silicone sealing ring. The circumferential end face of the silicone sealing ring abuts against the inner circumferential end face of the second locking hole.

2. The ultra-thin ultrasonic external oil level sensor according to claim 1, characterized in that: The silicone sealing ring has a single-sided adhesive backing on the side near the ultrasonic sensor, and the silicone sealing ring is bonded to the ultrasonic sensor by the single-sided adhesive backing.

3. The ultra-thin ultrasonic external oil level sensor according to claim 1, characterized in that: The surface of the raised frustum is coated with a silicone coating.

4. The ultra-thin ultrasonic external oil level sensor according to claim 1, characterized in that: The adhesive layer is AB modified acrylic adhesive.

5. The ultra-thin ultrasonic external oil level sensor according to claim 1, characterized in that: The adhesive layer is coated with a second silicone layer, and the outer circumferential end face of the retainer is coated with a third silicone layer.

6. The ultra-thin ultrasonic external oil level sensor according to claim 1, characterized in that: The ultrasonic sensor is connected to a power cord, and the retainer and the strong double-sided adhesive are provided with slots, allowing the power cord to extend outward along the slots.

7. The ultra-thin ultrasonic external oil level sensor according to claim 1, characterized in that: The end face of the strong double-sided adhesive opposite to the cage is used to bond the oil tank.

8. The ultra-thin ultrasonic external oil level sensor according to claim 1, characterized in that: The retainer is an aluminum alloy frame, and the thickness of the retainer is 2.5mm to 3.5mm.

9. The ultra-thin ultrasonic external oil level sensor according to claim 1, characterized in that: The thickness of the ultrasonic sensor is 2.5 mm to 3.5 mm.

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