CN111551944A

CN111551944A - Hidden radar assembly and vehicle

Info

Publication number: CN111551944A
Application number: CN202010485131.9A
Authority: CN
Inventors: 陈鹤文; 丁逢
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2020-08-18
Also published as: WO2021244445A1

Abstract

The invention relates to the technical field of vehicles and discloses a hidden radar assembly. The hidden radar assembly comprises a bumper body, a fixing support and an ultrasonic transducer, wherein a groove is formed in the inner side of the bumper body, the fixing support is arranged in the groove, the ultrasonic transducer is arranged on the fixing support, and the bumper body can vibrate simultaneously with the ultrasonic transducer to transmit ultrasonic waves. According to the hidden radar assembly provided by the invention, the ultrasonic transducer is completely hidden at the inner side of the bumper body and is not exposed, the appearance is good in aesthetic property, the comfort and experience of a user can be improved, the bumper body and the ultrasonic transducer can vibrate simultaneously to transmit ultrasonic waves, the situation that the ultrasonic waves acquire wrong information by taking the bumper body as a barrier can be avoided, and the bumper body is prevented from absorbing the ultrasonic waves, so that the energy of the ultrasonic waves is reduced, and the transmission stroke of the ultrasonic waves is influenced.

Description

Hidden radar assembly and vehicle

Technical Field

The invention relates to the technical field of vehicles, in particular to a hidden radar assembly and a vehicle.

Background

A bumper is a safety protection device fixed to front and rear portions of various automobile bodies, and an ultrasonic radar is generally provided on the bumper. In the prior art, the ultrasonic radar usually penetrates through the whole bumper and is exposed on the surface of the automobile bumper, and along with the higher and higher personalized requirements of users on the basic functions of the automobile, the aesthetic requirements on the automobile are gradually improved, the ultrasonic radar exposed on the surface of the bumper does not meet the aesthetic requirements of the users, and the experience of the users is poor. In addition, when the existing ultrasonic radar is installed, a mounting hole needs to be formed in the bumper, the ultrasonic radar is installed on the bumper through the mounting hole, and the strength of the bumper is affected by punching the bumper, so that the reliability of the bumper is reduced.

Disclosure of Invention

Based on the above, the invention aims to provide a hidden radar assembly and a vehicle, which can improve the strength and reliability of a bumper, and have beautiful appearance and good experience of users.

In order to achieve the purpose, the invention adopts the following technical scheme:

a concealed radar assembly comprising:

the bumper comprises a bumper body, wherein a groove is formed in the inner side of the bumper body;

the fixed support is arranged in the groove;

ultrasonic transducer, ultrasonic transducer set up in on the fixed bolster, the bumper body can with ultrasonic transducer vibrates simultaneously to transmit the ultrasonic wave.

As a preferred scheme of hidden radar assembly, still be provided with on the fixed bolster and dodge the hole, ultrasonic transducer passes dodge the hole and glue in on the bumper body.

As a preferred scheme of the hidden radar assembly, the bumper body is manufactured by adopting an injection molding process.

As a preferable scheme of the hidden radar assembly, the opening of the groove is flared.

As a preferred aspect of the concealed radar assembly, the recess includes:

the cross section of the fixing groove is in a circular structure, and the fixing groove is used for installing the fixing support;

and the transition groove is annularly arranged around the fixing groove, and the groove wall of the transition groove is obliquely arranged outwards from the groove bottom to form the flaring.

As a preferred aspect of the concealed radar assembly, the ultrasonic transducer includes:

a housing disposed on the fixed bracket;

the piezoelectric ceramic piece is arranged on the shell and can abut against the bumper body;

the limiting piece is arranged on one side, far away from the bumper body, of the piezoelectric ceramic piece;

the electrode plates are arranged at two ends of the piezoelectric ceramic plate.

As an optimal scheme of the hidden radar assembly, one of the fixed support and the shell is provided with a clamping groove, the other shell is provided with a clamping protrusion, and the clamping protrusion can be clamped in the clamping groove.

As a preferred scheme of hidden radar assembly, be provided with the constant head tank on the fixed bolster, be provided with the locating piece on the shell, the locating piece can insert in the constant head tank.

As a preferable mode of the concealed radar assembly, the bumper body includes a first portion and a second portion connected to each other, the first portion is located inside the second portion, and the recess is opened in the first portion.

To achieve the above object, the present invention further provides a vehicle including the concealed radar assembly according to any one of the above aspects.

The invention has the beneficial effects that:

the invention provides a hidden radar assembly which comprises a bumper body, a fixing support and an ultrasonic transducer, wherein the ultrasonic transducer is arranged on the fixing support, and the fixing support is arranged in a groove in the inner side of the bumper body, so that the ultrasonic transducer is completely hidden in the inner side of the bumper body and is not exposed, the appearance is attractive, and the comfort and experience of a user can be improved. Compare in prior art, this hidden radar assembly need not punch on the bumper body when installing ultrasonic transducer, and the intensity of bumper body is higher, and the reliability is better, and the security is higher. In addition, according to the hidden radar assembly provided by the invention, the bumper body and the ultrasonic transducer can vibrate simultaneously to transmit ultrasonic waves, so that the situation that the ultrasonic waves acquire wrong information by taking the bumper body as an obstacle can be avoided, and the bumper body can be prevented from absorbing the ultrasonic waves, so that the energy of the ultrasonic waves is reduced, and the transmission stroke of the ultrasonic waves is influenced.

The invention also provides a vehicle which comprises the hidden radar assembly, and the ultrasonic transducer is completely hidden in the inner side of the bumper body, so that the appearance of the vehicle is attractive, and the experience and comfort of a user are improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a hidden radar assembly according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a bumper body of a concealed radar assembly according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an ultrasonic transducer of a concealed radar assembly according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating a position relationship between a piezoelectric ceramic plate and a position-limiting plate of the hidden radar assembly according to an embodiment of the present invention;

FIG. 5 is a schematic diagram illustrating an extended state of a piezoceramic wafer of a concealed radar assembly according to an embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating a piezoelectric ceramic plate of a hidden radar assembly according to an embodiment of the present invention in a contracted state;

FIG. 7 is a schematic view of a mounting bracket of a concealed radar assembly according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a mounting bracket of a concealed radar assembly according to an embodiment of the present invention from another perspective;

fig. 9 is a cross-sectional view of a bumper body of a concealed radar assembly according to a second embodiment of the present invention.

In the figure:

1-a bumper body; 11-a first portion; 111-grooves; 1111-fixed slot; 1112-a transition slot; 12-a second portion;

2-fixing the bracket; 21-a stent body; 211-relief holes; 22-a resilient arm; 221-card slot; 222-a positioning groove;

3-an ultrasonic transducer; 31-a housing; 311-snap; 312-a locating block; 313-a shadow ring; 32-piezoelectric ceramic plate; 33-limiting piece.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example one

As shown in fig. 1, the present embodiment provides a hidden radar assembly, which includes a bumper body 1, a fixing bracket 2 and an ultrasonic transducer 3, wherein a groove 111 is formed on an inner side of the bumper body 1, the fixing bracket 2 is disposed in the groove 111, the ultrasonic transducer 3 is disposed on the fixing bracket 2, and the bumper body 1 can vibrate simultaneously with the ultrasonic transducer 3 to transmit ultrasonic waves. The bumper body 1 is provided at the front and rear portions of the vehicle body, and the inner side of the bumper body 1 is a side close to the vehicle body.

The hidden radar assembly that this embodiment provided, ultrasonic transducer 3 sets up on fixed bolster 2, and fixed bolster 2 sets up in the recess 111 of bumper body 1 inboard for ultrasonic transducer 3 hides completely in bumper body 1's inboard, does not expose, and the aesthetic property of outward appearance is better, can improve user's travelling comfort and experience and feel. Compare in prior art, this hidden radar assembly need not punch on bumper body 1 when installing ultrasonic transducer 3, and bumper body 1's intensity is higher, and the reliability is better, and the security is higher. In addition, the hidden radar assembly that this embodiment provided, bumper body 1 can vibrate with ultrasonic transducer 3 simultaneously to the transmission ultrasonic wave can be avoided the ultrasonic wave to obtain wrong information with bumper body 1 as the barrier, and can be avoided bumper body 1 to absorb the ultrasonic wave, thereby makes the energy of ultrasonic wave reduce, influences its transmission stroke.

Further, in the present embodiment, the bumper body 1 is manufactured by an injection molding process. It can be understood that, if a cylindrical groove 111 is formed in the bumper body 1, when the bumper body 1 is subjected to injection molding, the thickness of the portion of the bumper body 1 where the groove 111 is formed suddenly changes, and when the temperature is reduced, the portion is shrunk and sunk, so that the aesthetic degree of the bumper body 1 is affected, and the service performance and the service life of the bumper body 1 are also affected.

In order to solve the above problem, as shown in fig. 2, an opening of the groove 111 is flared, that is, the groove 111 includes a fixing groove 1111 and a transition groove 1112, a cross-sectional shape of the fixing groove 1111 is a circular structure, the fixing groove 1111 is used for mounting the fixing bracket 2, the transition groove 1112 is annularly disposed around the fixing groove 1111, and a groove wall of the transition groove 1112 is inclined from inside to outside to form a flare of the groove 111. Through setting up transition groove 1112 for bumper body 1 is the structure of attenuate gradually at the position that sets up recess 111, avoids its thickness to take place the process of moulding plastics that sudden change influences bumper body 1 at this position, and the appearance is pleasing to the eye, and convenient processing, and can improve bumper body 1's integrality.

Preferably, the bumper body 1 is made of polyethylene material at the position of the fixing groove 1111, which is beneficial for the penetration of ultrasonic waves and reduces the energy loss, and the bumper body 1 is made of polypropylene material at the position of the transition groove 1112.

Further, in this embodiment, the fixed bracket 2 is adhered to the bumper body 1, so that the fixing effect is good and the processing cost is low. Certainly, in other embodiments, the fixing bracket 2 and the bumper body 1 can also be in an integrally formed structure, so that the fixing effect between the fixing bracket and the bumper body is improved, the link of assembling among a plurality of parts is saved, and the assembling efficiency is higher.

Further, as shown in fig. 3-4, the ultrasonic transducer 3 includes a housing 31, a piezoelectric ceramic plate 32, a limiting plate 33, and electrode plates, the housing 31 is disposed on the fixing bracket 2, the piezoelectric ceramic plate 32 is disposed on the housing 31, the piezoelectric ceramic plate 32 can abut against the bumper body 1, the limiting plate 33 is disposed on one side of the piezoelectric ceramic plate 32 away from the bumper body 1, and the electrode plates are disposed at two ends of the piezoelectric ceramic plate 32. Specifically, after the electrode pads at the two ends of the piezoelectric ceramic sheet 32 receive the excitation signal, an electric field is formed between the two ends of the piezoelectric ceramic sheet 32, and the piezoelectric ceramic sheet 32 contracts or extends under the action of the electric field pressure, so as to generate mechanical vibration (this vibration form is called radial vibration), and transmit ultrasonic waves.

In the embodiment, since the position-limiting piece 33 is disposed on the side of the piezoelectric ceramic piece 32 away from the bumper body 1, and the position-limiting piece 33 is made of a metal material, which is difficult to deform, as shown in fig. 5-6, when the piezoelectric ceramic piece 32 extends, due to the limitation of the position-limiting piece 33, the side of the piezoelectric ceramic piece 32 close to the bumper body 1 may generate a "bulging" convex phenomenon, when the piezoelectric ceramic piece 32 contracts, due to the limitation of the position-limiting piece 33, the side of the piezoelectric ceramic piece 32 close to the bumper body 1 may generate a "bulging" concave phenomenon, during the alternate extension and contraction of the piezoelectric ceramic piece 32, the "bulging" of the end of the piezoelectric ceramic piece 32 close to the bumper body 1 alternately generates a bulging and concave phenomenon, that is, the radial vibration of the piezoelectric ceramic piece 32 is converted into axial vibration, and the vibration amplitude is small, so that the area of the bumper body 1 is small, the energy loss is small, so that the efficiency of the ultrasonic transducer 3 is high.

Preferably, the limiting plate 33 is welded on the piezoelectric ceramic plate 32, so that the fixing effect is good, and a good limiting effect on the piezoelectric ceramic plate 32 is achieved.

Further, as shown in fig. 7-8, one of the fixing bracket 2 and the housing 31 is provided with a card slot 221, and the other is provided with a card protrusion 311 (as shown in fig. 3), and the card protrusion 311 can be clamped in the card slot 221. Through setting up draw-in groove 221 and the protruding 311 of card of mutual joint, realize the fixed connection between fixed bolster 2 and the ultrasonic transducer 3, the connection effect is better. In this embodiment, the housing 31 is provided with a locking protrusion 311, and the fixing bracket 2 is provided with a locking groove 221. Optionally, the number of the clamping protrusions 311 and the clamping grooves 221 is two, the two clamping protrusions 311 are respectively disposed on two sides of the housing 31, the two clamping grooves 221 are respectively disposed on two sides of the fixing bracket 2, and the clamping protrusions 311 can be clamped in the corresponding clamping grooves 221, so that clamping stability between the fixing bracket 2 and the ultrasonic transducer 3 is improved.

Specifically, as shown in fig. 7, the fixed bracket 2 includes a bracket body 21 and a plurality of elastic arms 22, the bracket body 21 is of a stepped shaft structure, the plurality of elastic arms 22 are uniformly and alternately arranged along the circumferential direction of the small-diameter end of the bracket body 21, the large-diameter end of the bracket body 21 is bonded to the bumper body 1, the contact area between the fixed bracket 2 and the bumper body 1 can be increased, and the adhesion effect is improved. Be provided with above-mentioned draw-in groove 221 on two relative elastic arms 22 wherein, when ultrasonic transducer 3 inserts between a plurality of elastic arms 22, along with ultrasonic transducer 3 inserts to the major diameter end that is close to support body 21, elastic arm 22 can be propped open by card protruding 311, when card protruding 311 and draw-in groove 221 just right set up, in card protruding 311 can block into draw-in groove 221, elastic arm 22 supports the surface of tight shell 31 under the effect of elastic force, can also play the effect of fixed ultrasonic transducer 3.

Further, be provided with constant head tank 222 on the fixed bolster 2, be provided with locating piece 312 on the shell 31, in locating piece 312 can insert constant head tank 222, realize the location between fixed bolster 2 and the ultrasonic transducer 3, the location effect is better. It will be appreciated that the detent 222 is formed between two adjacent resilient arms 22.

Further, as shown in fig. 8, the bracket body 21 is provided with an avoiding hole 211, and the avoiding hole 211 is used for avoiding the ultrasonic transducer 3, so that the piezoelectric ceramic plate 32 abuts against the bumper body 1, and the energy loss is further reduced. In order to enable the bumper body 1 and the piezoelectric ceramic sheet 32 to vibrate simultaneously for transmitting ultrasonic waves, in the present embodiment, the piezoelectric ceramic sheet 32 passes through the avoiding hole 211 and is adhered to the bumper body 1.

In the prior art, a plastic part is wrapped around the piezoelectric ceramic plate 32, and the plastic part absorbs the energy of the ultrasonic wave, resulting in partial loss of the ultrasonic energy, but in the hidden radar assembly provided in this embodiment, the piezoelectric ceramic plate 32 is exposed outside and directly adhered to the bumper body 1, so that the absorption of the ultrasonic energy emitted by the plastic part is reduced.

Preferably, a shielding ring 313 is further disposed on the shell 31, the shielding ring 313 is disposed at one end of the shell 31 close to the bumper body 1, the piezoelectric ceramic plate 32 and the limiting piece 33 are both located inside the shielding ring 313, and one surface of the piezoelectric ceramic plate 32 close to the bumper body 1 and one surface of the shielding ring 313 close to the bumper body 1 are in the same plane, and the shielding ring 313 may be adhered to the bumper body 1. By providing the shielding ring 313, the piezoelectric ceramic sheet 32 can be prevented from being affected by external dust, water vapor, and the like.

Example two

The present embodiment provides a hidden radar assembly, the specific structure of which is substantially the same as that of the first embodiment, and the main difference is that, as shown in fig. 9, the hidden radar assembly provided in the present embodiment includes a first portion 11 and a second portion 12 connected to each other, the first portion 11 is located inside the second portion 12, and the groove 111 is opened on the first portion 11. Second portion 12 is the same with bumper structure on the vehicle among the prior art, through setting up first portion 11, can first shaping first portion 11, then is fixed in second portion 12 with first portion 11 on, can realize hiding ultrasonic transducer 3 in the inboard effect of bumper body 1 completely promptly, and can reform transform on current vehicle, and the course of working is simpler.

The embodiment also provides a vehicle, and the vehicle comprises the concealed radar assembly provided by the first embodiment or the second embodiment, and the ultrasonic transducer 3 is completely concealed on the inner side of the bumper body 1, so that the appearance of the vehicle is good, and the experience and comfort of a user are improved.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A concealed radar assembly, comprising:

the bumper comprises a bumper body (1), wherein a groove (111) is formed in the inner side of the bumper body (1);

the fixing support (2) is arranged in the groove (111);

ultrasonic transducer (3), ultrasonic transducer (3) set up in on fixed bolster (2), bumper body (1) can with ultrasonic transducer (3) vibrate simultaneously to transmit the ultrasonic wave.

2. The hidden radar assembly of claim 1, wherein the fixing bracket (2) is further provided with an avoiding hole (211), and the ultrasonic transducer (3) passes through the avoiding hole (211) and is adhered to the bumper body (1).

3. The concealed radar assembly according to claim 1, wherein the bumper body (1) is manufactured using an injection molding process.

4. The concealed radar assembly according to claim 3, wherein the opening of the groove (111) is flared.

5. The concealed radar assembly according to claim 4, wherein the groove (111) comprises:

a fixing groove (1111) having a circular cross-sectional shape, the fixing groove (1111) being used for mounting the fixing bracket (2);

a transition groove (1112) which is arranged around the fixing groove (1111), wherein the groove wall of the transition groove (1112) is inclined outwards from the groove bottom to form the flaring.

6. The concealed radar assembly according to claim 2, characterized in that the ultrasonic transducer (3) comprises:

a housing (31) provided on the fixed bracket (2);

a piezoelectric ceramic sheet (32) which is provided on the housing (31), and the piezoelectric ceramic sheet (32) can be abutted against the bumper body (1);

the limiting sheet (33) is arranged on one side, far away from the bumper body (1), of the piezoelectric ceramic sheet (32);

the electrode plates are arranged at two ends of the piezoelectric ceramic piece (32).

7. The concealed radar assembly according to claim 6, wherein one of the fixing bracket (2) and the housing (31) is provided with a slot (221), and the other is provided with a protrusion (311), and the protrusion (311) can be engaged in the slot (221).

8. The concealed radar assembly according to claim 6, wherein a positioning slot (222) is provided on the fixing bracket (2), and a positioning block (312) is provided on the housing (31), the positioning block (312) being insertable into the positioning slot (222).

9. The concealed radar assembly according to claim 1, characterized in that the bumper body (1) comprises a first portion (11) and a second portion (12) connected to each other, the first portion (11) being located inside the second portion (12), the groove (111) opening onto the first portion (11).

10. A vehicle comprising a concealed radar assembly according to any one of claims 1 to 9.