CN215116800U

CN215116800U - High-frequency ultrasonic sensor

Info

Publication number: CN215116800U
Application number: CN202023299423.8U
Authority: CN
Inventors: 崔启洲
Original assignee: Nanjing Logistics Electronic Technology Co ltd
Current assignee: Nanjing Logistics Electronic Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-12-10
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a high-frequency ultrasonic sensor which is arranged on a bumper of an automobile and comprises an upper shell, a lower shell and a connecting block connecting the upper shell and the lower shell, a metal shell and a circuit board arranged below the metal shell are arranged in the upper shell, a damping buffer layer is arranged at the bottom of the metal shell, the shock absorption buffer layer is provided with a piezoelectric ceramic piece, a metal sheet clung to the piezoelectric ceramic piece and a resonator positioned on the metal sheet, an arc-shaped block is arranged in the cavity of the connecting block, one end of the arc-shaped block is fixedly connected with a spring, one end of the spring, which is far away from the arc-shaped block, is fixedly connected with the bottom end of the cavity of the connecting block, the bottom of the connecting block is provided with a sliding hole, the first slide bar of bottom fixedly connected with of arc piece, the bottom of first slide bar is run through the slide opening and is set up in the slide opening below, the beneficial effects of the utility model are that: simple structure need not with the help of outside instrument, can accomplish dismantlement and installation, and the shock attenuation is effectual simultaneously, and job stabilization nature is good.

Description

High-frequency ultrasonic sensor

Technical Field

The utility model belongs to the technical field of the sensor, especially, relate to a high frequency ultrasonic sensor.

Background

The ultrasonic sensor is a sensor for converting an ultrasonic signal into another energy signal, and an ultrasonic distance sensor is used in an automobile to detect an obstacle in a blind zone of a field of view of the automobile. The core of the ultrasonic sensor is a piezoelectric wafer in an ultrasonic probe, and the ultrasonic sensor can transmit ultrasonic waves and receive the ultrasonic waves.

The existing vehicle-mounted ultrasonic sensor has the following problems: (1) the ultrasonic sensor and the fresh-keeping bar are directly inconvenient to install and disassemble, and often need to be installed and disassembled by means of an external tool, so that the operation is inconvenient; (2) ultrasonic sensor can produce vibrations when the signaling, if the pressure that vibrations produced can not quick propagation go out, can lead to whole ultrasonic sensor job stabilization.

SUMMERY OF THE UTILITY MODEL

Not enough to the aforesaid, the utility model provides a high frequency ultrasonic sensor, simple structure need not with the help of external instrument, can accomplish dismantlement and installation, and the shock attenuation is effectual simultaneously, and job stabilization nature is good.

The utility model discloses a realize through following technical scheme: a high-frequency ultrasonic sensor is arranged on a bumper of an automobile and comprises an upper shell, a lower shell and a connecting block for connecting the upper shell and the lower shell, wherein the bottom end of the upper shell is fixedly connected with the top of the connecting block, the top end of the lower shell is fixedly connected with the bottom of the connecting block, the top end of the upper shell is provided with a protective film, a metal shell and a circuit board arranged below the metal shell are arranged inside the upper shell, the bottom of the metal shell is provided with a damping buffer layer, the damping buffer layer is provided with a piezoelectric ceramic piece, a metal sheet tightly attached to the piezoelectric ceramic piece and a resonator positioned on the metal sheet, the piezoelectric ceramic piece is electrically connected with the circuit board through a lead, the connecting block is of a cavity structure with an opening at one end, an arc-shaped block is arranged in a cavity of the connecting block, one end of the arc-shaped block is fixedly connected with a spring, and one end of the spring, which is far away from the arc-shaped block, is fixedly connected with the bottom end of the cavity of the connecting block, the bottom of connecting block has seted up the slide opening, the bottom fixedly connected with first slide bar of arc piece, the bottom of first slide bar runs through the slide opening and sets up in the slide opening below.

As a preferred technical scheme of the utility model, the inner chamber top of connecting block is equipped with the spout, the top fixedly connected with second slide bar of arc piece, the top setting of second slide bar is in the spout.

As an optimal technical scheme of the utility model, be equipped with the signal line down the internal, signal line and circuit board electric connection.

As an optimized technical scheme of the utility model, the internal packing of inferior valve has the packaging material.

As the utility model discloses a preferred technical scheme, the shock attenuation buffer layer includes outside sponge layer and buffering sponge layer, be equipped with a plurality of bleeder vents on the outside sponge layer, outside sponge in situ is filled there are a plurality of buffering sponge layers.

As an optimal technical scheme of the utility model, the top surface and the bottom surface on buffering sponge layer are equipped with horizontal buffering line, be equipped with vertical buffering line on four sides on buffering sponge layer.

As a preferred technical scheme of the utility model, be equipped with the mounting hole on the bumper, the arc wall has been seted up on the mounting hole inner wall.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) through the arrangement of the connecting block, the fixing and the dismounting of the ultrasonic sensor and the bumper can be completed only by moving the first sliding rod and driving the arc-shaped block to move left and right, the structure is simple, and the fixing and the dismounting can be completed without other tools;

(2) set up the bleeder vent, strengthen the ventilation effect on outside sponge layer, the buffer memory sponge layer improves the recovery rate that outside sponge layer received after the extrusion, when the buffer memory sponge layer received the extrusion, can spread pressure through horizontal buffer memory line and the inside mutual extrusion of vertical buffer memory line to play better buffer memory effect.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the installation of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a schematic structural view of a shock absorbing buffer layer according to the present invention;

fig. 5 is a schematic structural diagram of the middle buffer sponge layer of the present invention.

List of reference numerals: 1. an upper housing; 2. a lower housing; 3. connecting blocks; 4. A protective film; 5. a protective film; 6. A circuit board; 7. a damping buffer layer; 8. piezoelectric ceramic plates; 9. a metal sheet; 10. a resonator; 11. a wire; 12. An arc-shaped block; 13. a spring; 14. a slide hole; 15. A first slide bar; 16. a chute; 17. a second slide bar; 18. a signal line; 19. an outer sponge layer; 20. a buffer sponge layer; 21. air holes are formed; 22. transverse buffer lines; 23. longitudinal buffer lines; 24. mounting holes; 25. an arc-shaped groove.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and embodiments, which are to be understood as illustrative only and not limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1-3, a high frequency ultrasonic sensor is arranged on a bumper of an automobile, and comprises an upper shell 1, a lower shell 2 and a connecting block 3 connecting the upper shell 1 and the lower shell 2, wherein the bottom end of the upper shell 1 is fixedly connected with the top of the connecting block 3, the top end of the lower shell 2 is fixedly connected with the bottom of the connecting block 3, the top end of the upper shell 1 is provided with a protective film 4, the upper shell 1 is internally provided with a metal shell 5 and a circuit board 6 arranged below the metal shell 5, the bottom of the metal shell 5 is provided with a damping buffer layer 7, the damping buffer layer 7 is provided with a piezoelectric ceramic plate 8, a metal sheet 9 tightly attached to the piezoelectric ceramic plate 8 and a resonator 10 positioned on the metal sheet 9, the piezoelectric ceramic plate 8 is electrically connected with the circuit board 6 through a wire 11, the connecting block 3 is a cavity structure with an open end, an arc-shaped block 12 is arranged in a cavity of the connecting block 3, one end fixedly connected with spring 13 of arc piece 12, the one end that arc piece 12 was kept away from to spring 13 and the cavity bottom fixed connection of connecting block 3, slide opening 14 has been seted up to the bottom of connecting block 2, the first slide bar 15 of bottom fixedly connected with of arc piece 12, slide opening 14 sets up in slide opening 14 below is run through to the bottom of first slide bar 15.

As an embodiment of the utility model, the inner chamber top of connecting block 3 is equipped with spout 16, the top fixedly connected with second slide bar 17 of arc piece 12, the top setting of second slide bar 17 is in spout 16, and spout and second slide bar play the effect of location to the arc piece, restrict the position that removes about the arc piece.

As an embodiment of the present invention, a signal line 18 is provided in the lower casing 2, the signal line 18 is electrically connected to the circuit board 6.

As an embodiment of the utility model, lower casing 2 intussuseption is filled with encapsulating material 26, and the encapsulating material can be with signal line 18 rigidity.

As an embodiment of the utility model, as shown in fig. 4-5, the shock absorption buffer layer 7 includes outside sponge layer 19 and buffering sponge layer 20, be equipped with a plurality of bleeder vents 21 on the outside sponge layer 19, the intussuseption of outside sponge layer 8 is filled with a plurality of buffering sponge layers 20, sets up bleeder vent 21, strengthens the ventilation effect of outside sponge layer 19, and buffering sponge layer 20 improves the recovery rate after outside sponge layer 19 receives the extrusion.

As an embodiment of the utility model, the top surface and the bottom surface of buffering sponge layer 20 are equipped with horizontal buffering line 22, be equipped with vertical buffering line 23 on four sides of buffering sponge layer 20, when the buffering sponge layer received the extrusion, can spread pressure through horizontal buffering line 22 and the inside mutual extrusion of vertical buffering line 23 to play better buffer effect.

As an embodiment of the utility model, be equipped with mounting hole 24 on the bumper, arc wall 25 has been seted up on the 24 inner walls of mounting hole.

The utility model discloses an operating principle utilizes piezoceramics piece 8's piezoelectricity effect, when the signal of telecommunication is applyed on piezoceramics piece 8's surface, can make it produce deformation, arouses piezoceramics piece 8's vibration and takes place the ultrasonic wave, utilizes damping buffer layer 7 can play the range that reduces vibration.

When ultrasonic sensor installs, only need move first slide bar 15 to the inboard for arc piece 12 moves to the inboard of connecting block 3 cavity, compresses spring 13, and will descend casing 2 to insert in mounting hole 24, then go into arc wall 25 with arc piece 12 card, resumes deformation at spring 13, promotes arc piece 12 in to arc wall 25, with ultrasonic sensor and bumper reciprocal anchorage, easy operation makes things convenient for ultrasonic sensor's installation and dismantlement.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a high frequency ultrasonic sensor, sets up on car bumper which characterized in that: the damping device comprises an upper shell, a lower shell and a connecting block for connecting the upper shell and the lower shell, wherein the bottom end of the upper shell is fixedly connected with the top of the connecting block, the top end of the lower shell is fixedly connected with the bottom of the connecting block, the top end of the upper shell is provided with a protective film, a metal shell and a circuit board arranged below the metal shell are arranged in the upper shell, the bottom of the metal shell is provided with a damping buffer layer, the damping buffer layer is provided with a piezoelectric ceramic piece, a metal sheet tightly attached to the piezoelectric ceramic piece and a resonator positioned on the metal sheet, the piezoelectric ceramic piece is electrically connected with the circuit board through a lead, the connecting block is a cavity structure with one open end, an arc-shaped block is arranged in a cavity of the connecting block, one end of the arc-shaped block is fixedly connected with a spring, one end of the spring, far away from the arc-shaped block, is fixedly connected with the bottom end of the connecting block, and the bottom of the connecting block is provided with a sliding hole, the bottom fixedly connected with first slide bar of arc piece, the bottom of first slide bar runs through the slide opening setting in the slide opening below.

2. The high frequency ultrasonic sensor according to claim 1, wherein: the inner chamber top of connecting block is equipped with the spout, the top fixedly connected with second slide bar of arc piece, the top setting of second slide bar is in the spout.

3. The high frequency ultrasonic sensor according to claim 1, wherein: the lower shell is internally provided with a signal wire which is electrically connected with the circuit board.

4. The high frequency ultrasonic sensor according to claim 1, wherein: and the lower shell is filled with packaging material.

5. The high frequency ultrasonic sensor according to claim 1, wherein: the damping buffer layer comprises an external sponge layer and a buffer sponge layer, a plurality of air holes are formed in the external sponge layer, and a plurality of buffer sponge layers are filled in the external sponge layer.

6. The high frequency ultrasonic sensor according to claim 5, wherein: the top surface and the bottom surface of the buffering sponge layer are provided with transverse buffering grains, and the four side surfaces of the buffering sponge layer are provided with longitudinal buffering grains.

7. The high frequency ultrasonic sensor according to claim 1, wherein: the bumper is provided with a mounting hole, and the inner wall of the mounting hole is provided with an arc-shaped groove.