Ultrasonic Sensors

Abstract

The present invention discloses an ultrasonic sensor, comprising a sensor body (10) and a sensor bracket (20): the sensor bracket (20) is a symmetrical rotating body structure composed of a plurality of claws (22), one end of each claw head is connected through a bracket flange (23), and the claw surface of the plurality of claws (22) is provided with a rib structure (21) and a bracket slot (24); the sensor body (10) is a symmetrical rotating body, the head of the sensor body (10) is provided with a sensor flange (11), and the surface of the sensor body (10) is also provided with a sensor hook (13) adapted to the bracket slot (24). The ultrasonic sensor of the present invention adopts a "claw inverted buckle" installation structure, and can be installed in a wide range of vehicle bumper thicknesses; the ultrasonic sensor is installed from the outside to the inside, and has a large operating space, which overcomes the limitation of large operating space requirements when installed from the inside to the outside, and has high installation efficiency.

Description

Technical Field

[0001] The invention relates to an ultrasonic sensor, in particular to an ultrasonic sensor installed on a car bumper. Background Art

[0002] Reversing assistance systems with ultrasonic sensors as their main components are increasingly being used in automobiles. Ultrasonic sensors are generally installed on the front or rear bumper of the vehicle to detect the distance between the vehicle and obstacles and to alert the driver when the set danger distance is reached.

[0003] Currently, ultrasonic sensors installed on car bumpers on the market need to be compatible with the car body bumper, and the structure design is customized according to the shape and thickness of the bumper, resulting in different installation schemes. However, the thickness range of the bumper is limited, and there are certain requirements for the uniformity of the bumper thickness, so the versatility is poor.

[0004] Moreover, the ultrasonic sensors currently installed on car bumpers on the market are generally installed from the inside to the outside of the bumper. When installing, the ultrasonic sensors are mostly installed by plugging the sensor into the wiring harness connector or placing the sensor on the mounting bracket and fixing it to the inside of the bumper with tape. This method is limited by the bumper shape and internal structure, and the installation efficiency is low. In some areas, there is even no operating space, resulting in the inability to install. Summary of the invention

[0005] The purpose of the present invention is to provide an ultrasonic sensor that adopts a "claw-backward-type" installation structure, which can be installed in a wide range of vehicle bumper thicknesses, overcoming the previous limitations of low installation efficiency due to bumper shape and internal structure games, and even some areas where there is no operating space and cannot be installed. This sensor product has a simple structure, few parts, and high installation efficiency.

[0006] The technical solution of the present invention is:

[0007] Ultrasonic sensor, including sensor body and sensor bracket:

[0008] The sensor bracket is a symmetrical rotating body structure composed of a plurality of claws, one end of each claw head is connected through a bracket flange, and the plurality of claws include Class I claws and Class II claws. The Class I claw has a rib structure on the surface of one end close to the bracket flange, and the Class II claw has a bracket slot on one end close to the bracket flange;

[0009] The sensor body is a symmetrical rotating body, a sensor flange is arranged on the head of the sensor body, and a sensor hook adapted to the bracket slot is also arranged on the surface of the sensor body.

[0010] Preferably, the claws of the sensor bracket are installed inside the opening of the vehicle bumper, and the bracket flange covers the opening of the bumper.

[0011] Preferably, a bump is further provided on the surface of the sensor body, and the sensor hook is provided on the surface of the bump.

[0012] Preferably, when assembling the ultrasonic sensor, the sensor bracket is first installed into the opening of the bumper, the rib structure of the sensor bracket squeezes the opening of the bumper, the sensor bracket is preliminarily positioned, and the bracket flange of the sensor bracket abuts against the outer side of the opening.

[0013] Preferably, after installing the sensor bracket, install the sensor body into the sensor bracket. After the sensor wiring harness passes through the middle hole of the sensor bracket, press the sensor flange so that the protrusion of the sensor body squeezes the claw of the sensor bracket. After the claw is deformed, its rib structure is squeezed against the inner side of the opening of the bumper, and the sensor hook is inserted into the bracket slot to fix the entire sensor body.

[0014] Preferably, the number of the Class I clamping jaws is not less than four, and the rib structures on a single Class I clamping jaw are arranged axially and the number is not less than five.

[0015] Preferably, the rib structure is one of silicon, rubber, plastic or metal springs, and has an arc shape or a triangular shape.

[0016] The advantages of the present invention are:

[0017] The ultrasonic sensor of the present invention adopts a "claw inverted buckle" installation structure, which fixes the sensor to the bumper opening. When the sensor is installed, the bracket is squeezed and deformed, and the claw ribs of the bracket are squeezed against the inner side of the bumper opening. The ribs squeezed inside the bumper opening can fix the radial limit of the bumper opening due to their own rebound stress and the friction of the bumper opening. The present invention can be installed in a wide range of vehicle bumpers; the ultrasonic sensor is installed from the outside to the inside, with a large operating space, which overcomes the limitation of large operating space requirements when installed from the inside to the outside, and has high installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a schematic diagram of the overall appearance structure of the ultrasonic sensor of the present invention;

[0020] Figure 2 This is a schematic diagram of the appearance structure of the sensor bracket of the present invention;

[0021] Figure 3 is a cross-sectional view of the sensor bracket of the present invention;

[0022] Figure 4The schematic diagram of the appearance structure of the sensor body of the present invention;

[0023] Figure 5 It is a cross-sectional view of the ultrasonic sensor of the present invention. DETAILED DESCRIPTION

[0024] like Figure 1 As shown, the ultrasonic sensor disclosed in this embodiment includes a sensor body 10 and a sensor bracket 20 , and the sensor body 10 is provided with a wiring harness 30 .

[0025] like Figure 2 and 3 As shown, the sensor bracket 20 is a symmetrical rotating body structure composed of a plurality of claws 22, one end of each claw head is connected by a bracket flange 23, and the plurality of claws 22 include Class I claws and Class II claws. The Class I claw is provided with a rib structure 21 on the surface of one end close to the bracket flange 23, and the Class II claw is provided with a bracket slot 24 on one end close to the bracket flange 23; the number of Class I claws is not less than four, and the rib structure 21 on a single Class I claw is arranged along the axial direction, and the number is not less than five. The rib structure 21 is one of hard elastic materials such as silicon, rubber, plastic or metal spring, and is in the shape of an arc or a triangle.

[0026] like Figure 4 As shown, the sensor body 10 is a symmetrical rotating body, a sensor flange 11 is arranged at the head of the sensor body 10 , a protrusion 12 is arranged on the surface of the sensor body 10 , and a sensor hook 13 adapted to the bracket slot 24 is arranged on the surface of the protrusion 12 .

[0027] like Figure 5 As shown, when assembling the ultrasonic sensor, first install the sensor bracket 20 into the opening 41 of the bumper 40, and the rib structure 21 of the sensor bracket 20 squeezes the opening 41 of the bumper to preliminarily position the sensor bracket 20 to prevent the bracket from shaking. The bracket flange 23 of the sensor bracket 20 abuts against the outer side of the opening 41 to limit the axial position of the bumper.

[0028] After the sensor bracket 20 is installed, the sensor body 10 is installed in the sensor bracket 20. After the sensor harness 30 passes through the middle hole of the sensor bracket 20, the sensor flange 11 is pressed to make the protrusion 12 of the sensor body 10 squeeze the claw 22 of the sensor bracket 20. After the claw is deformed, its rib structure 21 is squeezed against the inner side of the opening 41 of the bumper 40. The ribs squeezed inside the bumper opening can fix the radial limit of the bumper opening due to their own rebound stress and the friction of the bumper opening. The sensor hook 13 is inserted into the bracket slot 24 to fix the entire sensor body 10.

[0029] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any modifications made according to the spirit of the main technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultrasonic sensor, characterized in that: It comprises a sensor body (10) and a sensor bracket (20): The sensor bracket (20) is a symmetrical rotating body structure composed of a plurality of claws (22), one end of each claw head being connected via a bracket flange (23), the plurality of claws (22) comprising a type I claw and a type II claw, the surface of the type I claw being close to the bracket flange (23) having a rib structure (21), and the surface of the type II claw being close to the bracket flange (23) having a bracket slot (24); The sensor body (10) is a symmetrical rotating body, a sensor flange (11) is provided at the head of the sensor body (10), and a sensor hook (13) adapted to the bracket slot (24) is also provided on the surface of the sensor body (10); The claw (22) of the sensor bracket (20) is inserted into the inner side of the opening (41) of the vehicle bumper (40), and the bracket flange (23) covers the opening (41) of the bumper (40); The surface of the sensor body (10) is also provided with a protrusion (12), and the sensor hook (13) is provided on the surface of the protrusion (12); When assembling the ultrasonic sensor, the sensor bracket (20) is first installed into the opening (41) of the bumper (40), the rib structure (21) of the sensor bracket (20) presses the opening (41) of the bumper, the sensor bracket (20) is initially positioned, and the bracket flange (23) of the sensor bracket (20) abuts against the outer side of the opening (41); The rib structure (21) is made of one of silicon, rubber, plastic or metal springs.

2. The ultrasonic sensor according to claim 1, characterized in that: After the sensor bracket (20) is installed, the sensor body (10) is installed in the sensor bracket (20), and after the sensor harness (30) passes through the middle hole of the sensor bracket (20), the sensor flange (11) is pressed so that the protrusion (12) of the sensor body (10) squeezes the claw (22) of the sensor bracket (20). After the claw is deformed, its rib structure (21) is squeezed against the inner side of the opening (41) of the bumper (40), and the sensor hook (13) is inserted into the bracket slot (24), thereby fixing the entire sensor body (10).

3. The ultrasonic sensor according to any one of claims 1 to 2, characterized in that: The number of the Class I clamping jaws is not less than four, and the rib structure (21) on a single Class I clamping jaw is arranged along the axial direction, and the number is not less than five.

4. The ultrasonic sensor according to claim 3, characterized in that: The rib structure (21) is in the shape of an arc or a triangle.

Images