CN110596684A

CN110596684A - Novel ultrasonic sensor

Info

Publication number: CN110596684A
Application number: CN201910987151.3A
Authority: CN
Inventors: 吕英超; 陶煜斌
Original assignee: Suzhou Best Automotive Technology Co Ltd; Suzhou Automotive Research Institute of Tsinghua University
Current assignee: Suzhou Best Automotive Technology Co Ltd; Suzhou Automotive Research Institute of Tsinghua University
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2019-12-20

Abstract

The invention discloses a novel ultrasonic sensor which comprises a sensor main body, wherein the sensor main body comprises an installation body and a rear cover, a plurality of integrally-formed elastic pieces are arranged on the periphery of the installation body, the integrally-formed elastic pieces are made of rigid materials, each integrally-formed elastic piece comprises a straight part and L-shaped bends arranged on two sides of the straight part, each L-shaped bend is connected with a cantilever inclined to the outer side, and each cantilever is connected with a clamping jaw inclined to the inner side. Adopt integral type shell fragment joint bumper, the vehicle bumper thickness range that can install is extensive, and the installation effectiveness is high.

Description

Novel ultrasonic sensor

Technical Field

The invention relates to a novel ultrasonic sensor, in particular to a novel ultrasonic sensor with high installation efficiency.

Background

The ultrasonic sensor is generally used for a car backing auxiliary system, is more and more widely applied to an automobile as a main part of the car backing auxiliary system, is generally arranged on a bumper at the front or the rear of the automobile and is used for detecting the distance between the automobile body and an obstacle and reminding a driver of paying attention when a set dangerous distance is reached.

Install the ultrasonic sensor on car bumper on the market at present, mounting structure is generally for the structure of following the bumper by interior toward outer installation, and this kind of mounting structure passes through the fixed novel ultrasonic sensor of mode of installing support joint bumper trompil or support rubberizing in the bumper medial surface, nevertheless is limited to bumper molding and inner structure, and the efficiency of installation is lower, and some regional no operating space even leads to unable installation.

A small part of the mounting structure is a structure which is mounted from outside to inside of the bumper, the mounting structure is clamped, assembled and fixed on the bumper by using a metal elastic sheet, the sensor mounting structure needs to be customized according to the thickness of the bumper, and the adaptability is poor; the shell fragment is a plurality of parts of disconnect-type, has the difficult inefficiency of equipment, installs not firm shortcoming. The invention is achieved accordingly.

Disclosure of Invention

In order to solve the technical problems, the invention provides a novel ultrasonic sensor which is clamped with a bumper by adopting an integrated elastic sheet, so that the mountable vehicle bumper has a wide thickness range and high mounting efficiency.

The technical scheme of the invention is as follows:

the utility model provides a novel ultrasonic sensor, includes the sensor main part, the sensor main part is including installation body and back lid, installation body periphery is provided with a plurality of integrated into one piece's shell fragment, integrated into one piece's shell fragment is made by rigid material, integrated into one piece's shell fragment includes a straight portion, sets up the L type in straight portion both sides and bends, the L type is bent and is connected the cantilever of outside slope, the jack catch to the inside slope is connected to the cantilever.

In an optimal technical scheme, a buckle is arranged at the upper end of the side face of the mounting body, and the L-shaped bend is provided with a clamping groove matched with the buckle.

In a preferred technical scheme, the ratio of the transverse distance E between the bending part and the clamping jaw to the thickness F of the bumper is E/(F + 0.5) =1.0, and the ratio of the transverse distance A of the clamping jaw to the longitudinal distance B A/B = 0.6-0.8.

In a preferred technical scheme, the L-shaped bends on the two sides of the straight part are equal in length, and the cantilevers on the two sides are equal in length.

In an optimal technical scheme, the lengths of the L-shaped bends on the two sides of the straight part are not equal, and the lengths of the cantilevers on the two sides are equal.

Compared with the prior art, the invention has the advantages that:

1. the thickness range of the vehicle bumper on which the sensor can be mounted is wide, the limitation that the mounting structure of the sensor needs to be customized according to the thickness of the bumper in the prior art is overcome, and the mounting efficiency is high.

2. The ultrasonic sensor structure in the embodiment of the invention uses the elastic sheet which is of an integrated structure, and overcomes the defects of difficult assembly and poor installation of the traditional separated elastic sheet.

Drawings

The invention is further described with reference to the following figures and examples:

FIG. 1 is a schematic diagram of the overall structure of the novel ultrasonic sensor of the present invention;

FIG. 2 is a schematic view of the head structure of the novel ultrasonic sensor of the present invention;

FIG. 3 is a cross-sectional view of the head of the novel ultrasonic transducer of the present invention;

FIG. 4 is a schematic diagram of a spring plate structure of the novel ultrasonic sensor of the present invention;

FIG. 5 is a schematic view of a head structure of a sensor according to another embodiment of the present invention;

FIG. 6 is a cross-sectional view of a head of a sensor according to another embodiment of the present invention;

FIG. 7 is a schematic diagram of a spring plate structure of a sensor according to another embodiment of the invention;

FIG. 8 is a schematic view of the installation of a sensor according to another embodiment of the present invention;

fig. 9 is a schematic diagram of a spring piece of a sensor according to another embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Example 1:

the preferred embodiments of the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, the novel ultrasonic sensor of the present invention includes a sensor body (head of the sensor) 100, which is connected to a socket 300 via a lead wire 200.

As shown in fig. 2 and 3, the sensor main body 100 includes a mounting body 30 and a rear cover 60, the mounting body 30 has a buffer sleeve 10, an ultrasonic probe 40 and a circuit board 50 inside, and the circuit board 50 is connected to a socket 300 through a wire 200. The periphery of the mounting body 30 is provided with a plurality of integrally formed resilient plates 20, 2 resilient plates are shown in the figure, and the integrally formed resilient plates are made of rigid materials, such as stainless steel, spring steel, hot-dip plated steel, beryllium copper, and the like, which are commonly used.

As shown in fig. 4, the spring plate 20 integrally formed includes a straight portion 24, L-shaped bends 21 disposed at both sides of the straight portion 24, the L-shaped bends 21 are connected to cantilevers 22 inclined outward, and the cantilevers 22 are connected to claws 23 inclined inward. The spring 20 may be a strip-shaped plate structure, but it is understood that a protrusion or a rib may be added to increase the rigidity.

The length of the straight portion 24 is generally equal to or less than the diameter of the sensor body 100, the upper end of the side surface of the mounting body 30 is provided with a buckle 31, and the L-shaped bend 21 is provided with a slot 25 engaged with the buckle 31. The elastic sheet 20 is clamped into the clamping buckles 31 of the installation body 30 through the clamping grooves 25 on the two sides, the integrated elastic sheet is convenient to assemble, other structures are not required to be fixed, a plurality of parts (separated elastic sheets) are not required to be assembled, and the installation is firm.

The thickness of the opening of the bumper is clamped by the clamping jaw 23, the size of the cantilever 22 and the clamping jaw 23 keeps a certain range and proportion, the thickness range of the mountable bumper is wide, and the limitation that the mounting structure of the sensor needs to be customized according to the thickness of the bumper in the prior art is overcome.

As shown in fig. 9, the ratio of the transverse distance E of the bend 21 to the jaw 23 to the thickness F of the bumper 70 is E/(F + 0.5) =1.0, and the ratio a/B =0.6-0.8 of the transverse distance a to the longitudinal distance B of the jaw 23.

When the bumper is parallel to the horizontal direction at the time of sensor attachment, the lengths of the L-shaped bends 21 on both sides of the straight portion 24 are equal, and the lengths of the cantilevers 22 on both sides are equal.

Example 2:

when the bumper 70 has a certain vertical tilt angle, the corresponding sensor and its spring plate have a certain tilt angle, as shown in fig. 5 and 6.

The sensor body of this embodiment is the same in composition structure as that of embodiment 1. The ultrasonic probe comprises a mounting body 30 and a rear cover 60, wherein the inside of the mounting body 30 is provided with a buffer bush 10, an ultrasonic probe 40 and a circuit board 50, and the circuit board 50 is connected with a socket 300 through a lead 200. The overall structure of the sensor body also has an inclination angle corresponding to the inclination angle of the bumper 70. When the sensor is installed on the bumper, the whole structure of the sensor main body is horizontal.

As shown in fig. 7, the lengths of the L-shaped bends 21 on both sides of the straight portion 24 are not equal, and the lengths of the cantilevers 22 on both sides are equal, that is, C = D in fig. 9.

As shown in figure 8, the buckling surface 11 of the elastic sheet keeps consistent with the cross section 12 of the bumper in direction during installation, the claw 23 has a certain vertical direction inclined angle which is consistent with the inclined direction of the bumper, and therefore the elastic sheet can be effectively matched with the bumper, and the installation is more stable and firm.

The proportion of the transverse distance E between the bent claw and the thickness F of the bumper is as follows: E/(F + 0.5) =1.0, and the ratio of jaw transverse distance a to longitudinal distance B, a/B = 0.6-0.8.

As shown in fig. 9, the principle of determining the relative size relationship of the elastic sheet of the ultrasonic sensor in the embodiment of the present invention is as follows: 1) determining the thickness value F of the bumper (figure 10) which needs to be installed at the maximum;

2) the ratio E/(F + 0.5) of the transverse dimension E to the transverse dimension F of the claw 23 from the bend 21 is kept to be approximately equal to 1.0;

3) the jaw 23 has a transverse to longitudinal dimension ratio a/B = 0.6-0.8;

4) the A/B value is determined from the bumper thickness value, which decreases as the thickness value becomes larger.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a novel ultrasonic sensor, includes the sensor main part, its characterized in that, the sensor main part is including installation body and hou gai, installation body periphery is provided with a plurality of integrated into one piece's shell fragment, integrated into one piece's shell fragment is made by rigid material, integrated into one piece's shell fragment includes a straight portion, sets up the L type in straight portion both sides and bends, the L type is bent and is connected the cantilever of inclining to the outside, the jack catch of inclining to the inside is connected to the cantilever.

2. The novel ultrasonic sensor as claimed in claim 1, wherein a buckle is provided at the upper end of the side surface of the mounting body, and the L-shaped bend is provided with a slot for engaging with the buckle.

3. The ultrasonic sensor as claimed in claim 1, wherein the ratio of the transverse distance E of the bend to the jaw to the bumper thickness F is E/(F + 0.5) =1.0, and the ratio of the jaw transverse distance a to the longitudinal distance B, a/B = 0.6-0.8.

4. The ultrasonic sensor of claim 1, wherein the L-shaped bends on both sides of the straight portion have the same length, and the cantilevers on both sides have the same length.

5. The ultrasonic transducer of claim 1, wherein the L-shaped bends on both sides of the straight portion have different lengths, and the cantilevers on both sides have the same length.